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Home My WebLink About4103_Guilford_WhiteStreet_Phase II_MSWLF_CDLF_April20GW_FID1427178_20200722I �ENR USE ONLY: ❑Paper Report ❑Electronic Data - Email CD (data loaded: Yes 1 No } DWEyent #: f NG DENS Environmental Monitoring Division of Waste Management - Solid Waste ReDortina Form Notice: This form and any information attached to It are "Public Records" as defined In NC General Statute 132-1 _ As such, these documents are available for inspection and examination by any person upon request (NC General Statute 132-6) Instructions: Prepare one form for each Individually monitored untL Please type or print legibly. Attach a notification table with values that attain or exceed NC 2L groundwater standards or NC 2B surface water standards, The notification must include a preliminary analysis of the cause and significance of each value_ (e.g. naturally occurring, off -site source, pre-existing condition, etc.). Attach a notification table of any groundwater or surface water values that equal or exceed the reporting limits, Attach a notification table of any methane gas values that attain or exceed explosive gas levels. This includes any structures on or nearby the facility (NCAC 1313.1629 (4)(a)(1). Send the original signed and sealed form, any tables, and Electronic Data Deliverable to; Compliance Unit. NCDENR•DWM, Solid Waste Section, 1646 Mall Service Center, Raleigh, NC 27699-1646. Solid Waste Monitoring Data Submittal Information _ Name of entity submitting data (laboratory, consultant, facility ownarj: _.:.__,_..... Golder Associates NC, Inc. on behalf of the City of Greensboro Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address: Name: David Y. Reedy II E-mail: dreedy@golder.com Facility name: White Street Landfill - Phase II Facility Address: 2503 White Street Greensboro, NC 27405 Environmental Status: (Check all thatapply) Initial/Background Monitoring 0 Deleclion Monitoring Phone: 336-852.4903 of data submitted: (Check all that apply) Groundwater monitoring data from monitoring wells Groundwater monitoring data from private water supply wells 0 Leachate monitoring data Surface water monitoring data NC Landfill Rule: Actual sampling dales (e.g_ Facility Permit # (_0500 4r ,1600) October 20-24, 2006) 41-03 .1600 April 20 - 22. 2020 EX Assessment Monitoring Methane gas monitoring data Corrective action data (specify) Other(specify) 0 Corrective Action MINA Parameters Notification attached? No. No groundwater or surface water standards were exceeded. y Yes, a notification of values exceeding a groundwater or surface water standard is attached_ It includes a list of groundwater and surface water monitoring points, dates, analytical values, NC 2L groundwater standard. NC 26 surface water standard or NC Solid Waste GWPS and preliminary analysis of the cause and significance of any concentration, ❑ Yes, a notification of values exceeding an explosive methane gas limit Is attached. It includes the methane monitoring points, dales, sample values and explosive methane gas limits. Certification To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct. Furthermore, I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas levels, and a preliminary analysis of the cause and significance of conoentrations exceeding groundwater standards, I am aware that there are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment. David Y. Reedy II, PG Senior Hydrogeologist 336.852.4903 (Area Code) Telephone Number Affix NC Licensed/ Professional Geologist Seal Golder Associates NC, Inc„ 5B Oak Branch Drive, Greensboro, NC 27407 Facility Representative Address C-2862 NC PE Firm License Number (if applicable effective May 1. 2069) Revised 6/2009 4 GOLDER REPORT First Semi -Annual 2020 Water Quality Monitoring Report White Street Landfill - Phase ll, Permit No. 41-03 Submitted to: City of Greensboro Field Operations Department 401 Patton Avenue Greensboro, North Carolina 27406 Submitted by: Golder Associates NC, Inc. 5B Oak Branch Drive, Greensboro, North Carolina, USA 27407 +1 336 852-4903 19131339.101 July 22, 2020 July 22, 2020 19131339.101 Distribution List Richard Lovett, PG, Environmental Compliance Support Manager, Field Operations, City of Greensboro, 401 Patton Avenue, Greensboro, NC 27406. 336-373-4188. Richard.Lovett@greensboro-nc.gov Lewis Walker, Landfill Compliance Supervisor, Field Operations, City of Greensboro, 2503 White Street, Greensboro, NC 27405. 336-254-8096. Lewis.Walker@greensboro-nc.gov Jackie Drummond, Department of Environmental Quality, Division of Waste Management - Solid Waste Section, 2090 US Highway 70, Swannanoa, NC 28778. 828-296-4706. jaclynne.drummond@ncdenr.gov GOLDER July 22, 2020 19131339.101 Executive Summary On behalf of the City of Greensboro, Golder Associates NC, Inc. (Golder) is submitting the enclosed Water Quality Monitoring Report, which documents the results of the April 20 - 22, 2020, compliance monitoring event for the Phase II facility at the White Street Landfill. Compliance Monitoring Program During the April 2020 event, cobalt was detected at concentrations above the Practical Quantitation Limit (PQL) and Interim Maximum Allowable Concentration (IMAC) at downgradient compliance wells II-1 and II-6. Cobalt and vanadium were also detected at estimated concentrations below their respective PQLs, but above their IMACs in the samples from one or more downgradient compliance wells during this event. Per 15A NCAC 02L .0202 (b)(1), "where the standard (i.e., the NC 2L Standard) for a substance is less than the PQL, the detection of that substance at or above the PQL constitutes a violation of the standard." The groundwater standards for cobalt and vanadium are 1 microgram per liter (ug/L) and 0.3 ug/L, respectively. The PQL for both cobalt and vanadium is 10 ug/L. Further, historical concentrations of cobalt and vanadium are similar at upgradient and downgradient wells, which support that the constituents are naturally occurring. Details regarding naturally occurring metals, which include barium, cadmium, cobalt, vanadium, and zinc, are presented in the October 28, 2016, Alternate Source Demonstration (ASD) and November 20, 2017, addendum. Therefore, no further action is warranted for cobalt and vanadium. During this event, the following Appendix I VOCs were detected at concentrations above their respective PQLs and groundwater standards in samples from compliance monitoring wells: 1,4-dichlorobenzene at II-1 and vinyl chloride at II-2. Detected constituents and concentrations are generally consistent with historical data. The constituent 1,4-dioxane was detected above the PQL and NC 2L Standard in the samples from II-1, II4A, II-5, II-6, II-7, II-8, and II-12 during this event. 1,4-dioxane was analyzed for surface water and groundwater samples per the May 29, 2018, memorandum from the NC Department of Environmental Quality (DEQ) in addition to permit -required constituents. It is noted that 1,4-dioxane is not required by permit or regulation as part of the compliance monitoring program. No NC Appendix I constituents were reported above their respective PQLs and applicable surface water standards during the April 2019 event. Corrective Action Monitoring Program During this event, cadmium and cobalt at sentinel well SMW-1 was reported at concentrations above their respective PQLs and NC 2L Standards, as it has been during previous events. Cobalt and vanadium were detected at estimated concentrations below their respective PQLs but above their respective IMACs in samples from one or more downgradient wells during this event; concentrations are generally consistent with historical data and no further action is warranted for these estimated concentrations. Cadmium, cobalt, and vanadium were determined to be naturally occurring in the October 28, 2016, ASD. No Appendix I VOCs were detected at concentrations above groundwater standards during this event in samples from sentinel wells. The constituent 1,4-dioxane was detected at a concentration above the PQL and NC 2L Standard in samples from assessment well II-313 and sentinel well SMW-4 during this event. As stated above, this constituent is not required as part of the facility's monitoring program. GOLDER July 22, 2020 19131339.101 Based on these results, the City of Greensboro will continue groundwater monitoring in accordance with the requirements of the Assessment Monitoring and Corrective Action Programs, as outlined in Title 15A NCAC 13B .1635 and .1637. The next semi-annual monitoring event is tentatively scheduled for September 2020. If you have any questions, please contact the undersigned at 336-852-4903. GOLDER July 22, 2020 Table of Contents 19131339.101 1.0 INTRODUCTION.............................................................................................................................................1 1.1 Site Description and Background.........................................................................................................1 1.2 Compliance Monitoring History ............................................................................................................1 1.3 Hydrogeologic Setting..........................................................................................................................3 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION.............................................................3 2.1 Visual Inspection Program...................................................................................................................4 2.2 Well Network and Groundwater Elevation Measurements..................................................................4 2.3 April 2020 Monitoring Event.................................................................................................................4 2.4 Laboratory Analysis Program...............................................................................................................5 3.0 LABORATORY AND FIELD QA/QC..............................................................................................................5 4.0 DATA EVALUATION......................................................................................................................................5 4.1 North Carolina Groundwater and Surface Water Quality Standard Comparisons...............................5 4.1.1 Compliance Monitoring...................................................................................................................6 4.1.2 Corrective Action Monitoring...........................................................................................................6 5.0 CORRECTIVE ACTION PERFORMANCE MONITORING............................................................................6 6.0 CONCLUSIONS..............................................................................................................................................8 7.0 REFERENCES................................................................................................................................................8 TABLES Table 1 Summary of Historical Groundwater Elevation Data Table 2 Summary of Estimated Horizontal Flow Velocities Table 3 Summary of Well Construction Information Table 4 Summary of Groundwater Monitoring Results, Detected Constituents Table 5 Summary of Groundwater Field Parameters Table 6 Summary of Surface Water Monitoring Results, Detected Constituents Table 7 Summary of Surface Water Field Parameters 4 GOLDER iv July 22, 2020 19131339.101 FIGURES Figure 1 Groundwater Surface Contour Map, April 20 - 22, 2020 Figure 2 Surface Water Location Map APPENDICES Appendix A Groundwater and Surface Water Sampling Logs Appendix B April 2020 Groundwater Certificates -of -Analysis, Chain -of -Custody Forms and Laboratory Data Reviews Appendix C EPA Natural Attenuation Screening Protocol Forms and BIOCHLOR Monitored Natural Attenuation Analysis for April 2020 Sampling Event 4 GOLDER July 22, 2020 19131339.101 1.0 INTRODUCTION This report summarizes the monitoring results from the April 20 - 22, 2020, groundwater and surface water sampling event at Phase II of the White Street Landfill in Greensboro, North Carolina (NC). The active unlined construction and demolition debris (C&D) over municipal solid waste (MSW) facility is monitored in accordance with Title 15A NCAC 13B.1635 and .1637. The facility is in central Guilford County and is comprised of a closed, unlined MSW facility (Phase 1), an active unlined C&D over MSW facility (Phase 11), an active Subtitle D MSW facility (Phase 111), and an active Type I compost facility. Phase 11 is currently in Assessment Monitoring and Corrective Action for several detected volatile organic constituents (VOCs) that exceed their respective groundwater standards. The facility is owned and operated by the City of Greensboro under Permit Nos. 41-03 and 41-12 issued by the NC Department of Environmental Quality (DEQ, formerly NC Department of Environment and Natural Resources). The northeastern portion of the landfill property is comprised of the Phase I and Phase II landfills, which are covered under Permit No. 41-03. The southwestern portion of the facility is comprised of the Phase III, which is covered under permit No. 41-12. The water quality monitoring results for the Phase I and Phase III facilities are submitted under separate covers. 1.1 Site Description and Background The location of the facility is shown on the inlay on Figure 1. The White Street Landfill is located approximately 5 miles northeast of downtown Greensboro, NC in Guilford County. Access to the site is from Cone Boulevard, which turns into Ralph Johnson way and ends at White Street with the landfill entrance to the East of this intersection. Part of the James River watershed, North Buffalo Creek flows from southwest to northeast along the northwestern border of the facility and then flows eastward, away from the facility near the northeastern end of the facility. The location of this surface water feature and its associated tributaries are shown on the inlay on Figure 1. Based on the topography as shown on Figure 1, topographic surface elevations at the facility range from approximately 700 feet above mean sea level (AMSL) to nearly 850 feet AMSL. The site is surrounded by wooded and agricultural properties to the northwest, residential properties to the south and southwest, and residential and wooded properties to the east. The Phase II landfill is located east of the closed Phase I landfill and northeast of the active Phase III landfill. The property also includes an active Type I compost facility located to the east of the Phase I landfill and south of the Phase II landfill. Compliance Monitoring History The original monitoring network consisted of one upgradient well (MW-13) and five downgradient wells (II-1, II-2, II-3, II-4, and II-5). An additional upgradient well (MW-14) and three additional downgradient wells (II-6, II-7, and II-8) were installed in 1995. Assessment monitoring at the Phase II facility was initiated in 1997 due to groundwater exceedances of NC Appendix I constituents. The C&D waste unit began accepting waste over top of the closed Phase II MSW waste unit in 1998. Well II-713 was installed in December 2000. Four monitoring wells (11-9, II-10, II-11, and II-12) were installed in March 2005 as part of the Nature and Extent Study (NES). Well II-12 became part of the compliance network. 4 GOLDER July 22, 2020 19131339.101 In October 2006, the City submitted an Alternate Source Demonstration (ASD) to address NC Appendix I inorganic compounds detected in groundwater samples from the Phase II area. The ASD presented data to support that concentrations of barium, cadmium, cobalt, vanadium, and zinc detected at site monitoring wells are naturally occurring and was approved by the NC DEQ by letter on November 15, 2007. The Phase II facility is currently in corrective action due to above -standard concentrations of VOCs in groundwater. The Corrective Action Plan (CAP) was approved by the NC DEQ on June 24, 2008, which proposed phytoremediation and monitored natural attenuation (MNA) as the remedial strategy. Three sentinel monitoring wells (SMW-1, SMW-3, and SMW-4) were installed in June 2010 and the EBuffer® hybrid poplar trees were installed between March and November 2010. Well II-9 also serves as a sentinel well for the corrective action monitoring program. Monitoring well II-313 was installed in June 2011 to monitor groundwater quality downgradient of II-3, which has been impacted due to its close proximity to waste. The Phase II landfill's compliance monitoring network is currently comprised of 12 monitoring wells, which monitor the uppermost aquifer beneath the facility. Monitoring wells MW-13 and MW-14 are the upgradient wells for the Phase II landfill, with MW-13 being a shared upgradient well with the Phase I landfill. Wells II-1, II-2, II-3, II-4A, II-5, II-6, II-7, II-7B, II-8, and II-12 are downgradient compliance wells for the Phase II landfill. Well II-3B is sampled to monitor water quality downgradient of II-3. Groundwater samples are analyzed for the NC Appendix I list of constituents plus NC Appendix II 'detects' during the first semi-annual water quality monitoring event of each year and are analyzed for the NC Appendix II list of constituents during the second semi-annual water quality monitoring event of each year. Currently, there are not additional 'detects' to be analyzed during the first semi-annual water quality monitoring event of each year. The corrective action monitoring activities include semi-annual monitoring of the four sentinel wells (11-9, SMW-1, SMW-3, and SMW-4). Three compliance monitoring wells (II-1, II-7, II-7B) also serve as sentinel wells for the corrective action program. Groundwater samples from the sentinel wells are analyzed for the same parameters as the compliance monitoring wells. MNA parameters are collected semi-annually from upgradient well MW-13 and sentinel wells II-1, II-9, and SMW-3. The MNA parameters include chloride, nitrate, sulfate, sulfide, ethene, ethane, methane, total organic carbon (TOC), alkalinity, volatile fatty acids (VFAs). A Corrective Action Performance Evaluation Report (CAPER) is to be prepared and submitted to the NC DEQ every five years to evaluate MNA and the phytoremediation at the Phase II landfill. The next CAPER is to be submitted prior to the second semi-annual water quality monitoring event of 2022. The facility's monitoring network also includes five surface water sampling points, SW-1, SW-2, SW-3, SW-4, and SW-5. Surface water point SW-1 is the facility's upstream sampling point located along North Buffalo Creek, west of the facility, along Summit Avenue. Surface water point SW-2 is collected from a tributary to North Buffalo Creek that flows from south to north into the stream, just west and upstream of the facility. Surface water point SW-3 is located west of the facility, downstream of SW-1 and upstream of the confluence of North Buffalo Creek and the tributary from which SW-2 is sampled. Surface water points SW-4 and SW-5 are both located downstream of SW-1, SW-2, and SW-3 along North Buffalo Creek. Surface water point SW-5 is located within the facility's property, at the northern end of the Phase II landfill and SW-5 is located to the east of the facility, off Rankin Mill Road. Surface water points SW-1, SW-2, SW-3, and SW-4 are sampled in conjunction with the groundwater monitoring wells in accordance with the facility's permits and Water Quality Monitoring Plan for the Phase I, Phase II, and Phase III landfills. Surface water point SW-5 is only sampled in accordance for with the permit 41-03, which includes the Phase I and Phase II landfills, but does not include the Phase III landfill. 4 GOLDER July 22, 2020 19131339.101 1.3 Hydrogeologic Setting The White Street Landfill is located within the Carolina Slate Belt of the Piedmont Physiographic Province of NC (NCGS, 1985). Generally, the Carolina Slate Belt consists of Late Proterozoic to Cambrian volcanic and greenschist-facies, metasedimentary rocks intruded by plutonic suites (Butler and Secor, 1991). The site geology is characterized by a regional -scale felsic intrusive complex, which consists mainly of white to gray, fine- to coarse -grained, massive to foliated metamorphosed granitic rock. The region is characterized by regional and small-scale Mesozoic diabase dikes The uppermost groundwater beneath the facility is present in a shallow, unconfined aquifer comprised of saprolite and partially weathered rock (PWR). Groundwater occurs at depths of approximately 1 to 30 feet below ground surface. Depth to water measurements, obtained on April 20 - 22, 2020, are summarized in Table 1 and were used to prepare a groundwater surface contour map presented on Figure 1. As presented, the groundwater flow in the uppermost aquifer beneath the site is generally to the northwest toward North Buffalo Creek, which is located along the northwestern property boundary of the site. The groundwater surface contour map and interpreted flow directions are generally consistent with previously submitted groundwater contour maps and flow directions for this facility. Based on the April 2020 groundwater surface contour map, the hydraulic gradient in the shallow aquifer underlying the site, as measured along the conceptual flow paths shown on the contour map, was calculated to be approximately 0.02 feet/foot. Groundwater velocities were calculated using a hydraulic conductivity of 2.61 X 10-4 centimeters per second (cm/s), which is the average of the hydraulic conductivities calculated for the hydrogeologic units present at the facility's Phase II and Phase III landfills. This average is based on slug test data by BPA Environmental & Engineering Inc. (Phase II) and G.N. Richardson & Associates (Phase III). The estimated effective porosity of the shallow aquifer is expected to range from 0.20 (saprolite) to 0.09 (fractured rock). The effective porosity of saprolite was used in calculations to provide a conservative estimate of groundwater flow. Using the above values, the estimated rate of groundwater flow for the uppermost aquifer beneath the facility was calculated using the following modified Darcy equation: Vgw = KI/ne where Vgw = average linear velocity (feet/year), K = hydraulic conductivity (feet/year), i = horizontal hydraulic gradient, and ne = effective porosity. The average estimated linear groundwater flow velocity under the waste management unit is approximately 313 feet/year toward the northwest, which is generally consistent with previous estimates (Table 2). The linear velocity equation above makes the simplified assumptions of a homogeneous and isotropic aquifer. Therefore, this equation represents a likely average value for the uppermost aquifer and does not account for heterogeneous and/or anisotropic conditions that may be present in the uppermost aquifer at the facility. 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION Field activities conducted as part of the April 2020 sampling event are discussed in the following sections. GOLDER July 22, 2020 19131339.101 2.1 Visual Inspection Program In order to detect a potential release at the earliest possible time, the visual inspection program is used at the Phase II landfill by the sampling personnel. This program includes physical indicators such as potential water table mounding beneath the waste management unit, physical examination of any stresses in biological communities, visible signs of leachate migration (i.e., leachate seeps), unexplained changes in soil characteristics, and any other change to the environment due to the waste management unit. During the April 2020 event no physical indicators of a potential release were observed in the vicinity of the waste management areas by the sampling personnel. 2.2 Well Network and Groundwater Elevation Measurements The current compliance network of groundwater monitoring wells at the Phase II landfill consist of two upgradient background wells (MW-13 and MW-14), 10 downgradient compliance wells (II-1, II-2, II-3, II-4A, II-5, II-6, II-7, II-713, II-8, and II-12), one assessment well (11-31B), and four sentinel wells (11-9, SMW-1, SMW-3, and SMW-4). Available monitoring well construction information for all site monitoring wells is summarized on Table 3, and the well locations are shown on Figure 1. The well locations were selected to yield groundwater samples representative of the conditions in the uppermost aquifer underlying the facility, and to monitor for potential releases from the landfill unit. Three upstream surface water monitoring points (SW-1, SW-2, and SW-3) and two downstream surface water monitoring points (SW-4 and SW-5) are also monitored. Depth -to -water measurements are recorded to the nearest 0.01 foot prior to initiating groundwater purging and sampling activities. The respective groundwater level elevations for this event are presented in Table 1. The historical water level data are also shown on this table. As presented, recent groundwater elevation data for the monitoring well network indicate that the hydraulic head level in the uppermost aquifer beneath the facility is fairly consistent, with temporal variation from the long-term average limited to approximately 5 — 25 feet (plus or minus) under normal conditions. The range in fluctuation appears to be greatest in the upgradient background wells, which are located in a groundwater recharge area. The range in fluctuation in the downgradient compliance wells, which are located near groundwater discharge areas, is less, presumably due to the stabilizing effect of the hydraulic discharge boundary. 2.3 April 2020 Monitoring Event Personnel from Golder visited the facility from April 20 - 22, 2020, to purge and sample monitoring wells and to sample surface water monitoring points. Monitoring wells were purged and sampled using the dedicated pumps at the facility following low -flow micropurge procedures. Measurements of temperature, pH, specific conductivity, turbidity, dissolved oxygen, and oxidation reduction potential were recorded on approximately 3- to 5-minute intervals, depending on the purge rate. In general, the purge rate for each well was matched to the yield of the monitoring well, as determined by continuously monitoring the depth to the water, up to a maximum purge rate of approximately 200 milliliters per minute. Purging was continued until stabilization was indicated by the water quality parameters. Prior to sampling, the laboratory -supplied sample containers were prepared. Each sample container was labeled with the sample identification number, sampling personnel, date and time of sample collection, project name and number, and requested chemical analyses. The required groundwater samples were collected directly from the dedicated bladder pump's discharge lines or disposable bailer into the labeled, laboratory -supplied, pre -preserved sample containers after well stabilization 4 GOLDER 4 July 22, 2020 19131339.101 was completed based on the monitored water quality parameters. After collection, the samples were placed in a cooler on ice, under chain -of -custody control. Copies of the sampling logs are presented in Appendix A. Included in each log is a description of the sampling equipment, sampling method and location, field observations, and water quality measurements. The surface water samples were collected directly from the stream, by lowering the sample containers into the stream flow with the opening facing downstream from the current flow, taking care to prevent the overflow of the sample containers and to minimize sample -induced turbidity. Measurements of temperature, pH, specific conductivity, turbidity, dissolved oxygen, and oxygen reduction potential were measured directly from the stream and recorded during the collection of the surface water samples. After collection, the surface water samples were placed in a cooler on ice, under chain -of -custody control. Copies of the sampling logs are presented in Appendix A. Included in each log is a description of the sampling equipment, sampling location, sampling method, field observations, and water quality measurements. 2.4 Laboratory Analysis Program The April 2020 groundwater and surface water samples were submitted to Environmental Conservation Laboratories, Inc. (ENCO) of Cary, NC under chain -of -custody control for analysis. Groundwater and surface water samples were analyzed for NC Appendix I list of constituents. Sentinel wells II-1, II-9, and SMW-3 were also analyzed for approved MNA parameters. Surface water and groundwater samples were also analyzed for 1,4-dioxane per the May 29, 2018, memorandum from the NC DEQ. The samples were received at the laboratory in good condition and were properly preserved. 3.0 LABORATORY AND FIELD QA/QC A duplicate sample was collected at Phase II well II-8 by Golder personnel as part of the April 2020 sampling event. ENCO analyzed the duplicate sample for the NC Appendix I list of constituents. A laboratory -prepared trip blank accompanied the volatile sample containers to and from the laboratory. ENCO analyzed the trip blank for NC Appendix I VOCs. Reviews of the laboratory data were performed by Golder personnel and are included in Appendix B. The same constituents were detected in the duplicate sample and the sample from II-8. Further, the concentrations from the duplicate sample and the sample from II-8 were generally similar. The results do not identify any irregularities related to laboratory analyses. There were no detections of NC Appendix I constituents in the laboratory method blanks and therefore no data qualification was necessary. 4.0 DATA EVALUATION Analytical results and field parameters for the April 2020 groundwater samples are summarized in Tables 4 and 5 with available historical data. Analytical results and field parameters for the April 2020 surface water samples are summarized in Tables 6 and 7 with available historical data. The laboratory certificate -of -analysis, chain -of - custody form and laboratory data review for the sampling event are included in Appendix B. The results of the data evaluations are presented in the following sections. 4.1 North Carolina Groundwater and Surface Water Quality Standard Comparisons Compliance monitoring analytical results for the April 2020 groundwater and surface water samples are compared to applicable water quality standards below in Section 4.1.1. GOLDER July 22, 2020 4.1.1 Compliance Monitoring 19131339.101 During the April 2020 event, cobalt at downgradient compliance wells II-1 and II-6 were detected at concentrations above their respective Practical Quantitation Limits (PQLs) and NC 2L Interim Maximum Allowable Concentrations (IMACs). Cobalt and vanadium were also detected at estimated concentrations below their respective PQLs, but above their IMACs in the samples from one or more downgradient compliance wells during this event; vanadium was also detected at upgradient well MW-13 above the IMAC at an estimated concentration. Per 15A NCAC 02L .0202 (b)(1), "where the standard (i.e., the NC 2L Standard) for a substance is less than the PQL, the detection of that substance at or above the PQL constitutes a violation of the standard." The groundwater standards for cobalt and vanadium are 1 microgram per liter (ug/L) and 0.3 ug/L, respectively. The PQL for both cobalt and vanadium is 10 ug/L. Further, historical concentrations of cobalt and vanadium are similar at upgradient and downgradient wells, which support that the constituents are naturally occurring. Also, an Alternate Source Demonstration submitted on October 1, 2006, along with an Addendum submitted on September 20, 2007, was approved by the NC DEQ on November 15, 2007, and concluded that metals including barium, cadmium, cobalt, vanadium, and zinc were naturally occurring. During this event, the following Appendix I VOCs were detected at concentrations above their respective PQLs and groundwater standards in samples from compliance monitoring wells: 1,4-dichlorobenzene at II-1 and vinyl chloride at II-2. Detected constituents and concentrations are generally consistent with historical data. The constituent 1,4-dioxane was detected above the PQL and NC 2L Standard in the samples from II-1, II4A, II-5, II-6, II-7, II-8, and II-12 during this event. It is noted that 1,4-dioxane is not required by permit or regulation as part of the compliance monitoring program. No NC Appendix I constituents were reported above their respective PQLs and applicable surface water standards during the April 2020 event. 4.1.2 Corrective Action Monitoring During this event, cadmium was detected in the sample from sentinel well SMW-1 at a concentration above the PQL and NC 2L Standard, as it has been during previous events. Cobalt was detected above the PQL and NC 2L Standard for SMW-1. However, cobalt and vanadium were detected at estimated concentrations below their respective PQLs but above their respective IMACs in one or more downgradient wells during this event; concentrations are generally consistent with historical data and no further action is warranted for these estimated concentrations. An Alternate Source Demonstration submitted on October 1, 2006, along with an Addendum submitted on September 20, 2007, was approved by the NC DEQ on November 15, 2007, and concluded that metals including barium, cadmium, cobalt, vanadium, and zinc were naturally occurring. No Appendix I VOCs were detected at concentrations above their respective PQLs and groundwater standards during this event at sentinel wells. The constituent 1,4-dioxane was detected at a concentration above the PQL and NC 2L Standard in samples from assessment well II-313 and sentinel well SMW-4 during the April 2020 event. As stated above, this constituent is not required as part of the facility's monitoring program. 5.0 CORRECTIVE ACTION PERFORMANCE MONITORING The most recent CAPER was submitted to the NC DEQ on December 28, 2017 and was subsequently approved on January 5, 2018. The CAPER summarized the MNA and phytoremediation remedy results for the previous five-year period (April 2012 through April 2017). 4 GOLDER July 22, 2020 19131339.101 Analysis of geochemical or indicator parameters (including chloride, dissolved oxygen, ethane, ethene, methane, nitrate, oxygen reduction potential, total alkalinity, total organic carbon, sulfate, sulfide, and volatile fatty acids) was performed on samples from the "performance monitoring" of MNA monitoring wells. To assess the possibility that chlorinated (aromatic and aliphatic) VOCs are naturally attenuating at the site, geochemical parameters have been evaluated based on criteria presented in the Technical Protocol for Evaluating Natural Attenuation of Chlorinated Solvents in Ground Water, Table 2.3 (EPA, 1998). The EPA screening results are summarized in Appendix C of this report. The screening results present the scoring criteria in the Protocol, as calculated for downgradient / sentinel monitoring wells II-1, II-9, and SMW-3 for the April 2020 event. Based on the EPA's screening protocol, monitoring wells II-1, II-9, and SMW-3 each received a score of 12, which indicates limited evidence for anaerobic biodegradation of chlorinated organics (EPA, 1999). The natural attenuation screening protocol forms are included as Figures C-1, C-2, and C-3 in Appendix C. Based on the results of the screening protocol, there is evidence that natural attenuation is occurring at the site; therefore, modeling was performed on the April 2020 data to simulate remediation by natural attenuation using a screening model called BIOCHLOR (EPA, 2000). The flow paths between II-9 and SMW-3, II-2 and SWM-1, and II-3 and II-3B were selected for modeling due to the alignment of monitoring wells with groundwater flow downgradient of the Phase II waste unit, essentially following the contaminant plume. The models assume that waste was first placed in the Phase II Landfill in 1995. The BIOCHLOR modeling program generates plots that compare concentrations of tetrachloroethene, trichloroethene, dichloroethene, vinyl chloride, and ethene over time with no degradation, to concentrations where sequential 1st order biological attenuation is occurring. Each data input page and the associated constituent plots are provided as Appendix C. Figures C-4 and C-5 in Appendix C show the BIOCHLOR modeling results of flow path II-2 and SMW-1 for April 2020. Dichloroethene and vinyl chloride concentrations for II-2 plotted below their respective 1st order decay line during the event. Tetrachloroethene, trichloroethene, and ethene were not analyzed for samples from II-2 and SMW-1 during the event. Additionally, dichloroethene and vinyl chloride were not detected in the sample from SMW-1. The results from these plots indicate that natural attenuation is occurring at the site and that as long as conditions at the site continue to be strongly anaerobic, biodegradation will likely continue. Figures C-6 and C-7 in Appendix C show the BIOCHLOR modeling results of flow path II-3 and II-3B for April 2020. Tetrachloroethene, trichloroethene, and vinyl chloride were not detected in samples from either well during the event. The dichloroethene concentration for II-3 plotted below the 1st order decay line during the event. Dichloroethene was not detected in the sample from II-3B. Ethene was not analyzed for samples from II-3 and II-3B during the event. The results from these plots indicate that natural attenuation is occurring at the site and that as long as conditions at the site continue to be strongly anaerobic, biodegradation will likely continue. Figures C-8 and C-9 in Appendix C show the BIOCHLOR modeling results of flow path II-9 and SMW-3 for April 2020. Tetrachloroethene, trichloroethene, vinyl chloride, and ethene were not detected in samples from well II-9 and SMW-3 during the event. The dichloroethene concentration for II-9 plots below the first order decay line, but the concentration for SMW-3 plots between the no degradation line and the first order decay line. The results from these plots indicate that natural attenuation is occurring at the site and that as long as conditions at the site continue to be strongly anaerobic, biodegradation will likely continue. 4 GOLDER July 22, 2020 19131339.101 According to the current data, it is likely that the plume size is relatively stable, as indicated by the BIOCHLOR model. The cis-1,2 dichloroethene variety is the prominent form of dichloroethene indicating that the detections represent daughter products of trichloroethene. In summary, the results of the BIOCHLOR modeling conducted for April 2020 at the facility indicate that biodegradation is occurring downgradient of the Phase II waste unit. 6.0 CONCLUSIONS Based on these results, the City of Greensboro will continue groundwater monitoring the Phase II landfill in accordance with the requirements of the Assessment Monitoring and Corrective Action Programs, as outlined in Title 15A NCAC 13B .1635 and .1637. Also, based on the results, the City of Greensboro will continue the implementation of groundwater corrective action in accordance with the approved Corrective Action Plan. The next semi-annual monitoring event is tentatively scheduled for September 2020. 7.0 REFERENCES Butler, J. Robert and Secor, Donald T., Jr., 1991, The Central Piedmont, in Horton, J. W., Jr., and Zullo,V.A., eds., The Geology of the Carolinas: The University of Tennessee Press, p. 59 78. NCGS (North Carolina Geologic Survey), 1985, Geologic Map of North Carolina. S&ME, Inc., January 2017, White Street Landfill — Phase II, Permit No. 41-03, Assessment Monitoring September 2016. 4 GOLDER 8 July 22, 2020 19131339.101 Signature Page Golder Associates NC, Inc. 4� I !� David "Dusty" Y. Reedy II, PG Senior Hydroge,ologist Rachel P. Kirkman, PG Associate and Senior Consultant Engineering Lic. No, C-28621Geology Lic. No, C-399 Golder Associates NC, Inc. is a licensed user of the Golder trademark, and an associated operating entity. Golder and the G logo are trademarks of Golder Associates Corporation. hrips 1/gn1deras5ocrales aharep0ml,eorriIU4 116193Mxxxxx1phase 101 • 1 s1 sa wqm 20201200 - deiwerabres1252.16nallphase iUr 9r 3133E Y0I-002-r-rev0_phase u.don GOLDEP 9 Tables July 2020 19131339.101 TABLE 1 Summary of Historical Groundwater Elevation Data White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Well IDs MW-13 MW-14 II-1 II-2 II-3 II-313 II4A II-5 II-6 II-7 II-713 II-8 II-9 II-12 SMW-1 SMW-3 SMW-4 TOC Elevation 741.24 786.65 702.78 704.59 699.37 694.49 707.25 722.01 704.39 697.75 700.86 717.76 696.78 700.96 692.87 694.16 697.43 (ft AMSL) Date GW Elev - DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev - DTW GW Elev - DTW GW Elev DTW 10/14/98 718.61 22.69 738.95 26.35 749.56 19.02 743.48 21.17 671.9 16.15 NI NI NI NI 705.51 8.80 683.11 15.36 668.22 15.86 -- -- 696.94 10.15 NI NI NI NI -- -- -- -- -- -- 05/25/99 722.11 19.19 741.60 23.70 675.66 16.68 670.01 20.04 672.46 15.59 NI NI NI NI 707.57 6.74 688.64 9.83 670.21 13.87 -- -- 697.02 10.07 NI NI NI NI -- -- -- -- -- -- 09/22/99 721.32 19.98 738.15 27.15 675.19 17.15 670.19 19.86 672.50 15.55 NI NI NI NI 707.59 6.72 686.67 11.80 670.41 13.67 -- -- 697.40 9.69 NI NI NI NI -- -- -- -- -- -- 03/27/00 722.49 18.81 742.16 23.14 677.07 15.27 671.51 18.54 672.63 15.42 NI NI NI NI 708.31 6.00 689.25 9.22 670.66 13.42 -- -- 697.69 9.40 NI NI NI NI -- -- -- -- -- -- 09/13/00 722.37 18.93 741.46 23.84 675.85 16.49 6.70.67 19.38 672.95 15.10 NI NI NI NI 707.49 6.82 687.37 11.10 670.36 13.72 -- -- 697.39 9.70 NI NI NI NI -- -- -- -- -- -- 03/13/01 721.80 19.50 742.16 23.14 676.73 15.61 671.13 18.92 673.10 14.95 NI NI NI NI 708.09 6.22 688.44 10.03 670.57 13.51 -- -- 697.37 9.72 NI NI NI NI -- -- -- -- -- -- 09/13/01 720.98 20.32 739.35 25.95 675.60 16.74 669.64 20.41 672.12 15.93 NI NI NI NI 706.96 7.35 684.39 14.09 669.83 14.25 669.61 17.60 697.35 9.74 NI NI NI NI -- -- -- -- -- -- 03/08/02 719.08 22.22 739.11 26.19 677.70 14.64 670.10 19.95 672.27 15.78 NI NI NI NI 707.68 6.63 685.95 12.52 670.25 13.83 670.16 17.05 697.07 10.02 NI NI NI NI -- -- -- -- -- -- 09/18/02 722.10 19.20 736.11 29.19 675.66 16.68 672.13 17.92 671.50 16.55 NI NI NI NI 707.14 7.17 685.65 12.82 669.54 14.54 669.44 17.77 697.45 9.64 NI NI NI NI -- -- -- -- -- -- 04/15/03 724.59 16.71 749.72 15.58 680.23 12.11 672.11 17.94 673.43 14.62 NI NI NI NI 708.16 6.15 690.21 8.26 672.70 11.38 670.97 16.24 697.51 9.58 NI NI NI NI -- -- -- -- -- -- 10/15/03 722.82 18.48 746.83 18.47 677.58 14.76 671.18 18.87 674.61 13.44 NI NI NI NI 707.53 6.78 687.39 11.08 670.60 13.48 670.34 16.87 697.88 9.21 NI NI NI NI -- -- -- -- -- -- 03/24/04 722.42 18.88 746.79 18.51 676.86 15.48 670.87 19.18 674.54 13.51 NI NI NI NI 708.04 6.27 687.15 11.32 670.27 13.81 670.13 17.08 697.28 9.81 NI NI NI NI -- -- -- -- -- -- 09/22/04 722.56 18.74 742.04 23.26 676.70 15.64 670.44 19.61 672.43 15.62 NI NI NI NI 707.45 6.86 687.20 11.27 670.42 13.66 670.14 17.07 697.45 9.64 NI NI NI NI -- -- -- -- -- -- 05/09/05 722.14 19.16 746.03 19.27 676.38 15.96 670.72 19.33 674.79 13.26 NI NI NI NI 707.03 7.28 686.65 11.82 670.15 13.93 669.9 17.31 697.79 9.30 686.5 10.51 691.09 8.71 -- -- -- -- -- -- 10/11 /05 719.72 21.58 738.24 27.06 675.00 17.34 668.89 21.16 671.65 16.40 NI NI NI NI 707.16 7.15 683.38 15.09 669.35 14.73 668.88 18.33 697.45 9.64 -- -- -- -- -- -- -- -- -- -- 04/24/06 720.25 21.05 740.68 24.62 675.67 16.67 669.77 20.28 671.97 16.08 NI NI NI NI 707.83 6.48 686.5 11.97 669.61 14.47 669.46 17.75 697.44 9.65 -- -- -- -- -- -- -- -- -- -- 10/19/06 721.69 19.61 737.16 28.14 675.49 16.85 669.85 20.20 670.91 17.14 NI NI NI NI 706.71 7.60 685.21 13.26 669.85 14.23 669.61 17.60 697.45 9.64 -- -- -- -- -- -- -- -- -- -- 04/12/07 721.61 19.63 764.37 22.28 688.87 13.91 685.82 18.77 683.22 16.15 NI NI NI NI 714.77 7.24 694.20 10.19 685.20 12.55 685.04 15.82 708.44 9.32 -- -- -- -- -- -- -- -- -- -- 09/26/07 717.41 23.83 757.27 29.38 685.00 17.78 682.82 21.77 682.16 17.21 NI NI NI NI 712.51 9.50 689.06 15.33 682.24 15.51 682.04 18.82 707.61 10.15 -- -- -- -- -- -- -- -- -- -- 04/29/08 722.96 18.28 759.74 26.91 691.81 10.97 685.65 18.94 683.80 15.57 NI NI NI NI 716.34 5.67 696.92 7.47 687.78 9.97 684.84 16.02 708.45 9.31 -- -- 691.93 7.87 -- -- -- -- -- -- 12/03/08 -- -- -- -- -- -- -- -- -- -- NI NI N 1 NI -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 04/17/09 722.87 18.37 759.02 27.63 688.68 14.10 685.68 18.91 683.71 15.66 NI NI NI NI 716.10 5.91 695.43 8.96 684.61 13.14 683.83 17.03 708.50 9.26 -- -- 691.11 8.69 -- -- -- -- -- -- 04/28/10 721.70 19.54 762.67 23.98 686.53 16.25 684.56 20.03 682.37 17.00 NI NI NI NI 714.49 7.52 692.48 11.91 683.86 13.89 681.55 19.31 708.27 9.49 -- -- 689.55 10.25 -- -- -- -- -- -- 08/03/10 -- -- 762.73 23.92 685.82 16.96 684.30 20.29 -- -- NI NI NI NI -- -- -- -- 683.30 14.45 683.05 17.81 -- -- 685.08 11.70 -- -- 681.75 11.12 683.83 10.33 688.76 8.67 10/11 /10 721.13 20.11 757.98 28.67 685.92 16.86 683.97 20.62 682.04 17.33 NI NI NI NI 713.80 8.21 691.86 12.53 683.59 14.16 683.29 17.57 708.27 9.49 -- -- 688.91 10.89 681.70 11.17 683.85 10.31 688.87 8.56 05/09/11 722.33 18.91 759.52 27.13 687.65 15.13 685.22 19.37 682.45 16.92 -- -- NI NI 715.10 6.91 693.52 10.87 684.06 13.69 683.82 17.04 708.57 9.19 -- -- 689.74 10.06 -- -- -- -- -- -- 10/10/11 719.26 21.98 754.73 31.92 685.92 16.86 684.36 20.23 681.86 17.51 680.33 14.16 NI NI 714.83 7.18 691.29 13.10 683.73 14.02 683.59 17.27 708.19 9.57 684.76 12.02 689.36 10.44 682.30 10.57 683.80 10.36 688.85 8.58 04/18/12 721.34 19.90 758.49 28.16 687.78 15.00 684.95 19.64 682.07 17.30 -- -- NI NI 714.68 7.33 693.47 10.92 684.01 13.74 683.70 17.16 708.38 9.38 686.03 10.75 689.89 9.91 682.99 9.88 684.23 9.93 690.22 7.21 10/24/12 719.13 22.11 758.49 28.16 686.03 16.75 684.19 20.40 681.56 17.81 680.33 14.16 NI NI 714.25 7.76 691.75 12.64 683.46 14.29 683.26 17.60 708.06 9.70 684.76 12.02 688.57 11.23 682.30 10.57 683.80 10.36 688.85 8.58 04/30/13 721.96 19.28 757.43 29.22 688.40 14.38 685.82 18.77 681.48 17.89 681.14 13.35 -- -- 715.45 6.56 695.50 8.89 685.48 12.27 684.51 16.35 708.65 9.11 687.18 9.60 690.91 8.89 686.58 6.29 684.75 9.41 691.61 5.82 09/12/13 721.66 19.58 758.54 28.11 686.44 16.34 684.83 19.76 682.06 17.31 680.57 13.92 695.29 11.96 713.70 8.31 691.87 12.52 683.88 13.87 683.42 17.44 708.50 9.26 685.57 11.21 688.14 11.66 682.23 10.64 683.67 10.49 688.50 8.93 04/23/14 723.00 18.24 761.60 25.05 689.63 13.15 686.51 18.08 683.17 16.20 681.44 13.05 699.98 7.27 715.64 6.37 695.43 8.96 684.59 13.16 684.08 16.78 709.05 8.71 687.80 8.98 690.51 9.29 685.60 7.27 684.72 9.44 691.72 5.71 10/03/14 717.90 23.34 755.73 30.92 685.67 17.11 683.70 20.89 681.26 18.11 679.98 14.51 690.94 16.31 711.57 10.44 689.30 15.09 682.64 15.11 683.42 17.44 707.75 10.01 683.76 13.02 687.04 12.76 681.46 11.41 682.42 11.74 684.80 12.63 04/14/15 720.64 20.60 756.79 29.86 688.38 14.40 684.97 19.62 683.23 16.14 680.83 13.66 695.82 11.43 715.58 6.43 693.89 10.50 684.04 13.71 683.63 17.23 708.57 9.19 686.13 10.65 688.92 10.88 684.52 8.35 684.38 9.78 690.08 7.35 10/05/15 723.23 18.01 -- -- 687.14 15.64 684.80 19.79 682.61 16.76 681.11 13.38 690.94 16.31 716.01 6.00 691.91 12.48 683.80 13.95 683.35 17.51 708.24 9.52 685.62 11.16 688.98 10.82 685.98 6.89 684.19 9.97 689.43 8.00 04/19/16 721.94 19.30 759.55 27.10 687.44 15.34 685.77 18.82 683.21 16.16 680.97 13.52 698.83 8.42 715.49 6.52 693.70 10.69 684.37 13.38 683.66 17.20 708.33 9.43 686.83 9.95 689.03 10.77 -- -- -- -- -- -- 09/26/16 721.03 20.21 -- -- 686.88 15.90 684.54 20.05 682.70 16.67 680.36 14.13 692.57 14.68 715.53 6.48 690.15 14.24 683.66 14.09 683.61 17.25 708.21 9.55 685.10 11.68 687.81 11.99 681.41 11.46 683.96 10.20 686.38 11.05 03/21/17 -- -- -- -- 686.40 16.38 685.21 19.38 -- -- -- -- 695.11 12.14 -- -- 692.10 12.29 683.43 14.32 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 04/25/17 722.07 19.17 <757.30 >TOP 697.36 5.42 687.31 17.28 684.33 15.04 683.67 10.82 696.42 10.83 716.84 5.17 699.09 5.30 689.44 8.31 687.18 13.68 708.93 8.83 689.14 7.64 693.52 6.28 687.75 5.12 688.56 5.60 693.84 3.59 10/16/17 720.11 21.13 <757.06 >29.60 685.44 17.34 683.87 20.72 682.03 17.34 680.13 14.36 691.91 15.34 715.07 6.94 689.70 14.69 682.49 15.26 682.34 18.52 708.10 9.66 684.44 12.34 687.72 12.08 681.02 11.85 683.13 11.03 686.30 11.13 04/16/18 722.80 18.44 755.05 31.60 689.77 13.01 686.14 18.45 683.76 15.61 681.81 12.68 696.74 10.51 716.60 5.41 688.81 15.58 685.69 12.06 685.18 15.68 708.85 8.91 687.64 9.14 691.56 8.24 687.60 5.27 685.64 8.52 692.31 5.12 10/16/18 723.27 17.97 754.04 32.61 687.43 15.35 685.50 19.09 683.74 15.63 681.25 13.24 692.94 14.31 715.82 6.19 694.88 9.51 683.96 13.79 683.48 17.38 708.55 9.21 686.74 10.04 690.16 9.64 685.38 7.49 684.77 9.39 691.62 5.81 04/08/19 723.66 17.58 763.10 23.55 688.59 14.19 686.68 17.91 684.88 14.49 681.92 12.57 701.04 6.21 716.39 5.62 694.83 9.56 683.94 13.81 683.86 17.00 709.35 8.41 688.24 8.54 689.83 9.97 686.89 5.98 684.95 9.21 691.66 5.77 10/07/19 720.82 20.42 758.35 28.30 685.40 17.38 684.44 20.15 682.52 16.85 680.35 14.14 691.54 15.71 713.26 8.75 690.00 14.39 682.15 15.60 681.98 18.88 708.16 9.60 684.15 12.63 687.87 13.09 683.16 9.71 682.46 11.70 686.68 10.75 04/20/20 722.86 18.38 763.04 23.61 686.92 15.86 686.13 18.46 683.99 15.38 681.37 13.12 699.35 7.90 716.00 6.01 693.36 11.03 683.44 14.31 683.46 17.40 708.86 8.90 686.27 10.51 689.68 11.28 685.17 7.70 683.95 10.21 690.08 7.35 MEAN 721.52 19.75 751.40 25.94 685.01 15.47 681.39 19.52 678.71 16.07 681.03 13.46 695.29 11.96 711.95 6.94 690.41 11.64 678.77 13.70 679.56 17.24 703.97 9.47 686.09 10.70 689.66 10.24 683.99 8.88 684.27 9.89 689.50 7.93 MAXIMUM 724.59 23.83 764.37 32.61 749.56 19.02 743.48 21.77 684.88 18.11 683.67 14.51 701.04 16.31 716.84 10.44 699.09 15.58 689.44 15.86 687.18 19.31 709.35 10.15 689.14 13.02 693.52 13.09 687.75 11.85 688.56 11.74 693.84 12.63 MINIMUM 717.41 16.71 736.11 15.58 675.00 5.42 668.89 17.28 670.91 13.26 679.98 10.82 690.94 6.21 705.51 5.17 683.11 5.30 668.22 8.31 668.88 13.68 696.94 8.41 683.76 7.64 687.04 6.28 681.02 5.12 682.42 5.60 684.80 3.59 Notes: 1. ft AMSL = feet above mean sea level. 2. -- = not measured or no data 3. TOC = top of casing 4. NI = not installed 5. MW = monitoring well, GW = groundwater, DTW = depth to water 6. TOC and Water Elevation Data for dates prior to April 2017 from historical S&ME, Inc. Ground and Surface Water Monitoring Reports. 7. Well TOC survey conducted 2013-2014 by S&ME, Inc. for more accurate elevations. 4 GOLDER 1 of 1 July 2020 TABLE 2 Summary of Estimated Horizontal Flow Velocities White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina 19131339.101 April 2020 Gradient Flow Gradient Gradient Segment Horizontal Effective Porosity Hydraulic Velocity Calculation Direction Segment Length Elevations Gradient (ne) c Condutivity (VgW, feet/year) Segment (feet) (feet) (i, feet) (K, cm/sec) i 3 West -Northwest 2261 ----------- 690----------- 0.0265 0.02 2.61 E-04 358 i 4 North -Northwest 1507 ----------- 620----------- 90 0.0199 0.02 2.61 E-04 269 Average i Average VFW 0.0232 313 Notes: 1. Horizontal velocities based on the modified Darcy equation VgW = Ki/ne. 2. Values for K were based on the geometric mean of slug test values from all site monitoring wells as prepared by BPA Environmental & Engineering 3. The effective porosity for saprolite was used in velocity calculations. 4. cm/sec = centimeters per second ►� GOLDER 1 of 1 July 2020 TABLE 3 Summary of Well Construction Information White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina 19131339.101 Monitoring Well Identification Northing Easting Date of Construction Top -of -Casing Elevation (ft AMSL) Well Depth (feet) Well Diameter (inches) Screened Interval (ft bgs) Geology of Screened Interval Well Status II-1 863027.3314 1787495.6766 07/14/89 702.78 26.6 2 20.0 30.0 Water Table Aquifer Compliance / Sentinel Well II-2 864184.3539 1788403.6364 07/14/89 704.59 33.4 2 24.0 34.0 Water Table Aquifer Compliance Well II-3 864245.1544 1789031.9589 07/14/89 699.37 32.6 2 23.0 33.0 Water Table Aquifer Compliance Well II-313 864365.2295 1789116.1385 06/03/11 694.49 25.0 2 10.0 25.0 Water Table Aquifer NES Well II-4A 863581.7689 1789359.9497 08/13/13 707.25 25.0 2 10.0 25.0 Water Table Aquifer Compliance Well II-5 863032.9389 1789345.4003 07/14/89 722.01 16.0 2 19.0 29.0 Water Table Aquifer Compliance Well II-6 862513.6388 1787002.3258 07/14/89 704.39 20.7 2 7.5 20.0 Water Table Aquifer Compliance Well II-7 863701.8380 1787823.6893 07/14/89 697.75 27.7 2 12.5 27.5 Water Table Aquifer Compliance / Sentinel Well II-7B 863703.7309 1787839.3286 12/11/00 700.86 103.5 2 90.7 103.5 Water Table Aquifer Compliance / Sentinel Well II-8 861207.1750 1786938.1186 07/14/89 717.76 35.0 2 20.0 35.0 Water Table Aquifer Compliance Well II-9 863924.1830 1787952.6658 03/21/05 696.78 25.0 2 7.8 21.8 Water Table Aquifer Sentinel Well II-12 862084.6402 1786802.0936 03/22/05 699.80 22.8 2 5.7 19.7 Water Table Aquifer Compliance Well SMW-1 864374.8279 1788376.0728 07/08/10 692.87 18.4 2 8.4 18.4 Water Table Aquifer Sentinel Well SMW-3 863983.9035 1787857.4169 07/08/10 694.16 25.0 2 10.0 25.0 Water Table Aquifer Sentinel Well SMW-4 862512.4617 1786835.2747 07/08/10 697.43 23.9 2 8.9 23.9 Water Table Aquifer Sentinel Well MW-13 858763.9106 1783188.5206 07/14/89 741.24 33.8 2 20.0 35.0 Water Table Aquifer Background Well MW-14 859453.8757 1788632.2264 07/14/89 786.65 34.4 2 20.0 35.0 Water Table Aquifer Background Well Notes: 1. ft AMSL= feet above mean sea level 2. ft bgs = feet below ground surface 5. Unless otherwise noted, well construction survey information, Water Quality Monitoring Reports and Water Quality Monitoring Plans provided by Survey Solutions S&ME. .,,,�> G 0 L D E R 1of1 July 2020 TABLE 4 19131339.101 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Assessment Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constitent Detection Quantitation Reporting Units Date Well Limit Limit Limit Blanks MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Antimony ug/L 03/01/99 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND IMAC = 1 ug/L ug/L 09/01/99 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 6 ug/L ug/L 03/01/00 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 30 ND ND 0.54 ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 30 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.68 -- 6 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.68 -- 6 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.68 -- 6 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.073 -- 6 ND ND ND ND ND -- ND 0.211 J ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.22 -- 6 ND ND ND ND ND -- ND 0.242 J ND 0.248 J ND ND -- -- -- -- -- ND ug/L 08/02/10 0.22 -- 6 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.22 -- 6 ND ND 0.224 J ND ND -- ND 0.374 J ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.22 -- 6 ND ND 0.365 J ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.22 -- 6 ND ND 0.276 J ND ND -- ND 0.384 J ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.22 -- 6 ND ND 0.527 J ND 0.862 J -- 0.232 J ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 0.22 -- 6 ND ND ND ND ND -- ND ND 0.716 J ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.22 -- 6 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.22 -- 6 ND ND ND ND ND ND ND 0.345 J ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.22 -- 6 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.22 -- 6 ND ND 0.296 J ND 0.293 J ND ND ND ND ND ND ND ND ND 0.316 J 0.296 J 0.532 J ND ug/L 04/14/15 0.22 -- 6 ND ND 0.331 J 0.614 J ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.22 -- 6 0.22 -- 0.418 J ND 0.344 J ND ND ND ND ND ND ND ND ND 0.456 J ND 2.43 J ND ug/L 04/20/16 0.22 -- 6 ND 0.22 ND ND 0.282 J ND 0.239 J ND ND ND ND ND ND ND ND ND 0.22 ND ug/L 09/26/16 0.22 -- 6 ND -- ND ND ND ND ND 0.244 J ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.37 -- 6 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.37 -- 6 ND -- ND ND ND ND ND 0.471 J ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.37 -- 6 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 1.85 5.00 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 1.85 0.50 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.74 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.74 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Arsenic ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 10 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 10 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND 2.5 J -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND 2.8 J ND ND ND -- ND -- ND ND 2.4 J -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 10 2.4 J 2.9 J ND ND ND -- 2.2 J ND 3.1 J ND ND ND -- -- -- -- -- ND ug/L 12/01/08 2.8 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 2.8 -- 10 ND 3.1 B ND 3.8 B ND -- ND 3.3 B ND ND ND 4.9 B -- -- -- -- -- -- ug/L 10/16/09 2.8 -- 10 ND 3.81 J ND ND ND -- 3.4 J ND ND 3.95 J ND -- -- -- -- -- -- ND ug/L 04/28/10 2.8 -- 10 ND 4.6 J ND ND 4.79 J -- ND ND ND 5.22 J ND ND -- -- -- -- -- ND ug/L 08/02/10 2.8 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 4.07 J ND ND ND ug/L 10/11/10 2.8 -- 10 ND ND ND ND ND -- ND 5.22 J ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 2.8 -- 10 ND 3.08 B ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 2.8 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND 4.29 J ND ND ND ug/L 04/17/12 2.8 -- 10 3.73 J 3.86 J 3.06 J ND ND -- 6.84 J ND ND 6.24 J 10.1 B ND -- -- -- -- -- -- ug/L 10/25/12 2.8 -- 10 ND 2.87 J ND ND ND -- 3.10 J 8.68 J 7.97 J 4.09 J ND 6.04 J 7.21 J 3.53 J 6.54 J ND ND -- ug/L 05/02/13 2.8 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 5.4 -- 10 ND ND ND 5.78 J ND ND ND ND ND ND ND ND ND ND 5.98 J ND ND ND ug/L 04/24/14 5.4 -- 10 ND 6.51 J ND ND ND -- ND ND ND ND 7.05 J 5.40 ND ND ND ND ND ND ug/L 10/06/14 5.4 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 6.8 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 6.8 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 6.8 -- 10 ND 6.80 11.6 ND ND ND ND ND ND ND ND ND ND ND ND ND 6.80 ND ug/L 09/26/16 6.8 -- 10 ND -- ND ND ND 9.78 J ND 9.30 J 7.45 J ND ND ND ND ND ND ND ND ND ug/L 04/25/17 6.8 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 6.8 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 6.8 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 7.6 10.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 7.6 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 7.6 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 7.6 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Barium ug/L 03/01/99 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 700 ug/L ug/L 09/01/99 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 2000 ug/L ug/L 03/01/00 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND 600 -- ND -- -- -- ND ug/L 10/01/05 -- -- 500 ND ND ND ND ND -- ND 560 ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 500 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- 120 14.4 J 244 60.3 J 218 -- 131 292 26.4 J 16.5 J 74.6 J -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- 130 10.9 J 235 44.3 J 188 B -- 139 B -- 77.7 J 12.8 J 75.0 J -- -- -- -- -- -- -- ug/L 04/29/08 0.2 -- 100 107 13.0 J 241 50.4 J 244 -- 70.4 J 69.8 J 7.1 J 10.4 J 79.7 J 532 -- -- -- -- -- ND ug/L 12/01/08 1.0 -- 100 127 12.7 J 296 46.2 J 194 -- 110 486 17.9 J 11.1 J 86.8 J 878 -- -- -- -- -- ND ug/L 12/05/08 1.0 -- 100 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 4.2 -- 100 132 14.3 J 245 74.4 J ND -- 71.6 J 37.1 J 13.9 J 10.2 J 87.6 J 488 -- -- -- -- -- ND ug/L 10/16/09 1.0 -- 100 119 12.5 J 203 41.2 J 203 -- 124 410 90.7 J 10.2 J 79.2 J -- -- -- -- -- -- ND ug/L 04/28/10 1.0 -- 100 112 17.1 J 309 63.1 J 183 -- 89.0 J 339 21.7 J 11.5 J 87.7 J 386 -- -- -- -- -- ND ug/L 08/02/10 1.0 -- 100 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 144 228 178 ND ug/L 10/11/10 1.0 -- 100 87.9 J 15.8 J 225 40.9 J 164 -- 114 356 14.8 J 9.15 J 74.3 J 473 -- -- 140 301 164 ND ug/L 05/09/11 1.0 -- 100 108 12.3 J 415 53.5 J 207 -- 91.4 J 104 13.1 J 10.6 J 105 397 -- -- -- -- -- ND ug/L 10/12/11 1.0 -- 100 115 17.4 J 429 45.2 J 191 -- 106 431 26.8 J 9.50 J 115 430 202 78.4 114 78.4 J 128 ND ug/L 04/17/12 1.0 -- 100 112 14.1 J 329 80.1 J 198 -- 89.6 J 105 22.4 J 9.45 J 123 396 -- -- -- -- -- ND ug/L 10/25/12 1.0 -- 100 104 18.1 J 422 55.7 J 187 -- 84.6 J 394 8.92 J 94.4 J 118 448 169 90.4 J 128 180 134 ND ug/L 05/02/13 1.0 -- 100 120 20.5 J 253 57.3 J 218 -- 88.4 J 26.1 J 21.9 9.59 J 131 341 167 91.8 J 117 150 123 ND ug/L 09/24/13 1.0 -- 100 85.9 J 14.6 J 355 55.0 J 192 186 71.5 J 328 42.7 J 9.31 J 122 396 157 93.8 J 125 181 140 ND ug/L 04/24/14 1.0 -- 100 98.7 J 17.3 J 261 58.6 J 218 -- 53.4 J 22.6 J 22.3 J 9.61 J 143 171 171 37.6 J 109 221 112 ND ug/L 10/06/14 1.0 -- 100 88.3 J 18.5 J 446 53.8 J 197 182 94.0 J 382 159 11.2 J 142 384 156 109 112 222 266 ND ug/L 04/14/15 1.0 -- 100 105 19.7 J 376 62.1 J 265 216 109 90.1 J 71.7 J 9.99 J 116 -- 179 110 108 333 139 ND ug/L 10/07/15 1.0 -- 100 93.3 J -- 424 221 201 187 102 269 87.0 13.4 J 150 221 178 110 69.0 J ND 59.7 J ND ug/L 04/20/16 1.0 -- 100 91.3 J 13.6 J 351 51.1 J 230 166 149 96.6 J 124 11.0 J 159 396 172 63.9 J ND 209 153 ND ug/L 09/26/16 1.0 -- 100 85.1 J -- 346 50.9 J 189 177 204 205 186 11.9 J 146 379 175 108 114 219 182 ND ug/L 04/25/17 1.0 -- 100 96.6 J 14.7 J 386 55.7 J 220 170 122 25.2 J 13.6 J 12.0 J 176 100 172 98.5 J 112 107 38.8 J ND ug/L 10/17/17 1.0 -- 100 94.1 J -- 426 51.6 J 202 193 195 433 194 21.2 J 170 273 163 109 98.4 J 303 166 ND ug/L 04/16/18 1.0 -- 100 82.7 J 26.5 J 415 55.5 J 214 192 76.4 J 135 21.3 J 28.2 J 190 191 163 94.0 J 114 362 36.0 J ND ug/L 10/16/18 1.1 10.0 -- 94.5 -- 365 57.8 174 190 131 244 21.6 25.9 167 194 67.8 56.0 117 119 55.8 ND ug/L 04/12/19 1.1 10.0 -- 95.9 17.0 288 57.7 257 166 101 46.0 18.3 28.4 180 104 177 78.9 233 351 53.2 ND ug/L 10/07/19 1.1 10.0 -- 89.0 13.3 404 52.9 170 199 245 331 190 32.2 192 299 171 98.0 165 418 126 ND u /L 04/20/20 1.1 10.0 -- 98.9 16.8 312 68.3 188 160 124 148 55.9 36.4 181 279 155 66.8 91.5 295 110 ND Beryllium ug/L 03/01/99 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND IMAC = 4 ug/L ug/L 09/01/99 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 4 ug/L ug/L 03/01/00 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 2 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.7 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.08 -- 1 ND ND ND ND ND -- ND ND ND ND ND 0.46 J -- -- -- -- -- ND ug/L 10/16/09 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.10 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.10 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.10 -- 1 ND 0.102 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.10 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.10 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.10 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.10 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.13 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.16 1.00 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/20/20 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Cadmium ug/L 03/01/99 -- -- 1 ND ND 3 ND ND -- ND 3 ND ND ND ND -- ND -- -- -- ND NC 2L = 2 ug/L ug/L 09/01/99 -- -- 1 ND ND 2 ND ND -- ND 2 ND ND 1 -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 1 ND ND 2 ND 4 -- 2 ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 1 ND ND 2 ND 1 -- ND 2 ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 1 ND ND 1.8 ND 5.7 -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 1 ND ND 1.9 1.3 5.6 -- 1.5 6.1 1.0 1.3 1.5 -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 1 ND ND 1.0 1.0 2.1 -- 1.9 2.1 ND ND 1.0 ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 1 ND ND ND ND ND -- ND 4.5 ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 1 ND ND ND ND 2.0 -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 1 ND ND 1.1 ND 4.7 -- ND 3.6 ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 1 ND 1.3 1.2 1.0 1.6 -- 1.4 1.8 ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.50 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.09 -- 1 ND 0.15 J 0.26 J 0.17 J 0.24 J -- ND 0.26 J 0.14 J 0.21 J 0.26 J 0.27 J -- -- -- -- -- ND ug/L 10/16/09 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.36 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1.78 ND ND ND ug/L 10/11/10 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- 4.79 ND ND ND ug/L 05/09/11 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND 3.52 ND ND ND ug/L 04/17/12 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND 1.62 ND ND ND ug/L 05/02/13 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND 8.42 ND ND ND ug/L 09/24/13 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND 0.644 J ND ND 2.00 ND ND ND ug/L 04/24/14 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND 3.01 ND ND ND ND ug/L 10/06/14 0.36 -- 1 ND 0.842 J ND ND ND ND ND 0.43 J ND ND 0.502 J ND ND 1.62 ND ND ND ND ug/L 04/14/15 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND 4.92 ND ND ND ug/L 10/07/15 0.36 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND 3.45 ND ND ND ug/L 04/20/16 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.36 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND 0.375 ND ND ND ND ug/L 04/25/17 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 8.65 ND ND ND ug/L 10/17/17 0.36 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND 0.933 J 3.95 ND ND ND ug/L 10/16/18 0.36 1.00 -- ND -- ND ND ND ND ND ND ND ND ND ND ND 0.557 J 6.82 ND ND ND ug/L 04/12/19 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND 0.368 B 15.0 ND ND 0.361 ug/L 10/07/19 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND 0.593 J ND 0.741 J 4.96 ND ND ND ,,,> GOLDER 1 of 9 July 2020 TABLE 4 19131339.101 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Assessment Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constitent Detection Quantitation Reporting Units Date Well Limit Limit Limit Blanks MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Chromium ug/L 03/01/99 -- -- 10 ND ND 47 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 10 ug/L ug/L 09/01/99 -- -- 10 ND ND 20 ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 100 ug/L ug/L 03/01/00 -- -- 10 ND ND 54 ND ND -- 12 ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND 21 ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND 32 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND 10 ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND 3.0 J ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 10 ND 6.9 J ND ND ND -- ND 6.7 J ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 1.0 -- 10 ND 3.3 J ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/05/08 1.0 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 0.7 -- 10 ND 6.9 J 2.4 J 1.9 J 3.6 J -- 2.8 J 0.7 J 0.9 J 0.8 J 1.6 J 24.7 -- -- -- -- -- ND ug/L 10/16/09 1.0 -- 10 ND 3.55 J 3.69 J ND 2.29 J -- 1.51 J 3.77 J 5.25 J ND ND -- -- -- -- -- -- ND ug/L 04/28/10 1.0 -- 10 ND 2.24 J 2.4 J ND 2.24 J -- 1.93 J ND 1.05 J ND ND ND -- -- -- -- -- ND ug/L 08/02/10 1.0 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2.06 J ND ND ND ug/L 10/11/10 1.0 -- 10 ND 3.15 J ND ND 1.67 J -- ND ND ND 1.45 J ND ND -- -- 6.52 J 7.86 J ND ND ug/L 05/09/11 1.0 -- 10 ND 4.26 J 4.93 J ND 1.87 J -- ND ND 1.04 J ND 1.42 J 1.17 J -- -- -- -- -- ND ug/L 10/12/11 1.0 -- 10 1.27 J 4.88 J 6.87 J 1.64 J 2.22 J -- 3.01 J 6.47 J 1.31 J ND 3.17 J 2.19 J 7.42 J 4.13 J 1.89 J 3.44 J 1.47 J ND ug/L 04/17/12 1.0 -- 10 ND 3.75 J 6.80 J 2.15 J 3.16 J -- 2.42 J 1.22 J 1.12 J ND 2.71 J 1.62 J -- -- -- -- -- ND ug/L 10/25/12 1.0 -- 10 ND 2.23 J 2.85 J ND 2.15 J -- 1.13 J 3.16 J ND ND 1.04 J ND J ND 1.90 J 2.52 J ND ND ND ug/L 05/02/13 1.4 -- 10 1.74 J 2.19 J ND ND 5.55 J -- 2.02 J 1.59 J 2.82 J ND 2.51 J ND ND 2.39 J 3.75 J ND ND ND ug/L 09/24/13 1.4 -- 10 ND ND 2.92 J ND 3.99 J 2.03 J ND 1.49 J ND ND ND 3.97 J 2.63 J ND ND 3.98 J ND ND ug/L 04/24/14 1.4 -- 10 ND 1.51 J 2.28 J ND 2.77 J -- 1.60 J ND 2.09 J ND 2.63 J 3.34 J ND 2.35 J 1.88 J ND ND ND ug/L 10/06/14 1.4 -- 10 ND ND 4.79 J ND 1.57 J 1.94 J ND 3.92 J ND ND 1.71 J 2.17 J ND 2.67 J 4.16 J 1.83 J 1.93 J ND ug/L 04/14/15 1.4 -- 10 ND ND 3.88 J ND 7.10 J ND 1.83 J ND 1.60 J ND ND -- ND ND ND ND 2.83 J ND ug/L 10/07/15 1.4 -- 10 ND -- 3.16 J 3.17 J ND ND 5.02 J 2.47 J ND ND 2.10 J 3.17 J ND ND 2.19 J ND 5.87 J ND ug/L 04/20/16 1.4 -- 10 ND ND ND ND 3.14 J ND 1.82 J ND ND ND ND 5.50 J ND ND ND ND 9.98 J ND ug/L 09/26/16 1.4 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 1.4 -- 10 ND ND ND ND 2.04 J ND 8.77 J 2.76 J 1.91 J ND ND 5.21 J ND 2.13 J 9.36 J ND 3.26 J ND ug/L 10/17/17 1.4 -- 10 ND -- 3.73 J ND 1.68 J 2.05 J 2.82 J 2.40 J ND ND 2.87 J ND 1.57 J 2.38 J 2.16 J ND 1.60 J ND ug/L 04/16/18 1.4 -- 10 ND 1.91 J 2.34 J ND ND ND 2.71 J ND 1.40 J ND ND 2.08 J ND ND 2.63 J ND ND ND ug/L 10/16/18 1.4 10.0 -- ND -- 3.37 J ND 3.00 J 2.66 J 2.27 J ND 2.14 J ND 3.53 J 1.60 J 2.15 J 2.39 J 3.11 J ND ND ND ug/L 04/12/19 1.4 10.0 -- ND ND 3.07 J ND 2.57 J 2.75 J 3.17 J ND 2.55 J ND 3.71 J 1.87 J 1.57 J ND 3.38 J ND ND ND ug/L 10/07/19 1.4 10.0 -- ND ND 2.82 J ND 2.13 J 2.30 J 2.35 J 3.13 J ND ND 2.99 J ND ND ND ND ND ND ND ug/L 04/20/20 1.4 10.0 -- ND ND 4.21 J ND 4.38 J ND 1.56 J ND ND ND ND 1.75 J ND ND ND ND ND ND Cobalt ug/L 03/01/99 -- -- 10 ND ND 36 ND 13 -- 18 27 ND ND ND ND -- ND -- -- -- ND IMAC = 1 ug/L ug/L 09/01/99 -- -- 10 ND ND 18 ND 10 -- ND 13 ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 10 ND ND 29 ND 45 -- 46 ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND 41 ND 14 -- ND 12 ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND 19 ND 34 -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND 46 ND 28 -- 11 39 ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND 10 ND 18 -- 1.2 15 ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND 29 ND 10 -- ND 36 ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND 14 61 -- 33 ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND 13 ND 39 -- 13 29 ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND 28 ND 72 -- 15 20 ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND 17 ND 25 -- 11 15 ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND 24 ND 40 -- ND 25 ND ND ND 33 -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND 60 ND 23 -- 13 48 ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND 72.3 ND 31.8 -- 12.8 42.7 ND ND ND -- -- -- -- -- -- ND ug L 04/12/07 -- -- -- N D N D N D . -- 12.3 24.5 N D N D N D -- -- -- -- -- -- N D ug/L 09/26/07 -- -- -- ND ND 62.0 2.0 21.7 -- 17.5 -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 10 ND ND 4.3 J ND 26.0 -- 2.1 J 5.3 J ND ND ND 49.2 -- -- -- -- -- ND ug/L 12/01/08 1.1 -- 10 ND ND 51.4 ND 25.1 -- 4.4 J 42.4 1.3 J ND ND 22.4 -- -- -- -- -- ND ug/L 12/05/08 1.1 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 0.6 -- 10 ND ND ND ND 21.6 -- 4.1 J 1.1 J ND ND ND 34.4 -- -- -- -- -- ND ug/L 10/16/09 1.1 -- 10 ND ND 36.5 ND 25.2 -- 20.1 34.5 2.3 J ND ND -- -- -- -- -- -- ND ug/L 04/28/10 1.1 -- 10 ND ND ND -- 32.3 25.8 2.11 J ND 1.46 J 8.21 J -- -- -- -- -- ND ug/L 08/02/10 1.1 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 15.5 3.12 J 4.55 J ND ug/L 10/11/10 1.1 -- 10 ND ND 35.8 ND 16.1 -- 23.2 27.7 ND ND ND 6.73 J -- -- 7.34 J 13.0 1.48 ND ug/L 05/09/11 1.1 -- 10 ND ND 22.4 ND 21.2 -- 5.86 J 4.91 J ND ND ND 8.16 J -- -- -- -- -- ND ug/L 10/12/11 1.1 -- 10 ND ND 59.4 ND 18.5 -- 9.65 J 40.7 ND ND 1.88 J 4.74 J 7.05 J 6.38 J 7.7 J 1.45 J 5.54 J ND ug/L 04/17/12 1.1 -- 10 ND ND 23.1 ND 14.1 -- 7.28 J 6.23 J ND ND 1.77 J 6.20 J -- -- -- -- -- ND ug/L 10/25/12 1.1 -- 10 ND ND 44.2 ND 14.6 -- 1.33 J 35.3 ND ND 1.25 J 1.85 J 2.31 J 4.48 J 10.3 1.92 J ND ND ug/L 05/02/13 1.1 -- 10 ND ND 17.0 ND 17.1 -- 6.58 J ND ND ND ND 4.88 J 1.70 J 2.57 J 1.10 2.39 J ND ND ug/L 09/24/13 1.1 -- 10 ND ND 45.1 ND 14.0 4.20 J 6.64 J 23.1 2.56 J ND 2.32 J 6.01 J 3.04 J 4.31 J 16.6 4.27 J 6.75 J ND ug/L 04/24/14 1.1 -- 10 ND ND 20.5 ND 14.4 -- 6.06 J ND ND ND 1.71 J 6.81 J 2.66 J 11.4 1.72 J 2.50 J 1.48 J ND ug/L 10/06/14 1.1 -- 10 ND ND 58.5 ND 12.3 1.33 J 11.0 29.3 1.63 J ND 1.87 J 1.65 J 1.42 J 4.61 J 11.2 2.76 J 4.22 J ND ug/L 04/14/15 1.1 -- 10 ND ND 26.8 ND 18.5 1.82 J 12.2 5.11 J ND ND 2.03 J -- 2.09 J 3.32 J 20.8 3.40 J 1.10 J ND ug/L 10/07/15 1.1 -- 10 ND -- 42.7 9.65 J 12.9 ND 3.46 J 21.2 3.51 ND 1.75 J 9.65 J 2.22 J 6.64 J 19.9 2.01 J ND ND ug/L 04/20/16 1.1 -- 10 ND ND 35.5 ND 11.2 ND 16.4 5.77 J ND ND 2.42 J 7.80 J 1.42 J 18.7 30.7 2.10 J 1.77 J ND ug/L 09/26/16 1.1 -- 10 ND -- 50.2 ND 10.6 ND 15.4 26.2 1.60 J ND 2.29 J 3.05 J 1.35 J 3.97 43.4 2.88 J 1.50 J ND ug/L 04/25/17 1.1 -- 10 ND ND 20.3 ND 12.4 ND 4.75 J ND ND ND 3.30 J 4.19 J 1.41 J 2.71 J 2.39 J 1.39 J ND ND ug/L 10/17/17 1.1 -- 10 ND -- 48.6 1.39 J 9.06 J ND 15.1 33.8 2.57 J ND 4.20 J 1.65 J 4.41 J 4.63 J 21.4 3.30 J 2.08 J ND ug/L 04/16/18 1.1 -- 10 ND 1.53 J 29.9 ND 10.6 ND 6.18 J 12.9 ND ND 4.20 J 8.52 J 2.82 J 2.26 J 16.2 4.16 J ND ND ug/L 10/16/18 1.4 10.0 -- ND -- 20.2 ND 7.50 J ND 8.87 J 21.5 ND ND 4.19 J 2.00 J 3.16 J 1.49 J 14.0 2.37 J ND ND ug/L 04/12/19 1.4 10.0 -- ND ND 27.3 ND 12.1 ND 3.65 J ND ND ND 6.20 J 3.19 J 2.77 J 5.42 J 8.20 J 3.16 J ND ND ug/L 10/7/2019 1.4 10.0 -- ND ND 36.8 ND 6.09 J ND 20.6 17.1 2.51 J ND 4.56 J 3.54 J 1.72 J 3.11 J 68.3 3.38 J ND ND ug/L 04/20/20 1.4 10.0 -- ND ND 21.0 ND 5.62 J ND 8.99 J 15.3 ND ND 4.17 J 2.19 J 1.62 J ND 24.8 1.55 J ND ND Copper ug/L 03/01/99 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 1000 ug/L ug/L 09/01/99 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 1300 ug/L ug/L 03/01/00 -- -- 200 ND ND 220 ND ND -- 360 ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 200 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- 1.2 J 0.6 5.3 J 2.0 J 0.6 J -- 0.6 0.6 0.6 J 0.6 0.7 J -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- 0.6 1.0 B ND 2.2 B ND -- ND -- 0.8 B ND 2.0 B -- -- -- -- -- -- -- ug/L 04/29/08 0.6 -- 10 4.0 J 2.8 J 8.0 J ND ND -- 4.4 J 7.7 J 4.1 J 2.9 J 2.5 J ND -- -- -- -- -- ND ug/L 12/01/08 1.6 -- 10 ND ND 3.3 J ND ND -- ND ND 1.8 J ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.81 -- 10 ND ND ND ND 3.4 J -- 1.31 J 1.7 J ND 2.17 J ND 13.9 -- -- -- -- -- ND ug/L 10/16/09 1.6 -- 10 ND ND 4.76 J ND 2.31 J -- ND ND 3.91 J 1.95 J ND -- -- -- -- -- -- ND ug/L 04/28/10 1.6 -- 10 ND ND 4.05 J ND 3.42 J -- ND 3.86 J 1.88 J ND ND ND -- -- -- -- -- ND ug/L 08/02/10 1.6 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 11.9 1.66 J ND ND ug/L 10/11/10 1.6 -- 10 ND ND 15.4 ND 2.03 J -- ND ND 1.76 J 1.67 J ND ND -- -- 18.1 72.0 2.35 J ND ug/L 05/09/11 1.6 -- 10 ND ND 17.3 ND 1.79 J -- 2.89 J 2.46 J ND 1.81 J ND ND -- -- -- -- -- ND ug/L 10/12/11 1.6 -- 10 ND ND 9.93 B ND ND -- 1.96 J ND ND 2.54 J ND ND 2.62 J 9.54 9.63 J 7.38 J ND ND ug/L 04/17/12 1.6 -- 10 ND ND 6.67 J ND 2.64 J -- 1.75 J 2.92 J ND 2.02 J ND ND -- -- -- -- -- ND ug/L 10/25/12 1.6 -- 10 ND ND 21.6 ND ND -- 2.46 J ND 1.64 J ND ND ND ND 6.12 J 5.37 J ND ND ND ug/L 05/02/13 1.6 -- 10 ND ND 7.45 J ND ND -- ND 1.62 J ND ND ND ND ND 1.79 J 11.1 ND ND ND ug/L 09/24/13 1.6 -- 10 ND ND 8.78 J ND ND ND ND ND ND 1.69 J ND 1.61 J ND ND 2.56 J ND ND ND ug/L 04/24/14 1.6 -- 10 1.87 J 2.24 J 8.55 J ND 2.14 J -- 4.30 J 2.62 J 2.07 J 3.98 J 2.51 J 2.20 J ND 72.7 6.18 J 3.40 J ND ND ug/L 10/06/14 1.6 -- 10 ND ND 14.4 ND ND ND ND ND ND ND ND ND ND 28.2 1.77 J 4.50 J ND ND ug/L 04/14/15 1.6 -- 10 ND ND 6.09 J ND 5.46 J ND 3.37 J 3.18 J 5.89 J 3.95 J ND -- ND ND 10.9 5.25 J 1.60 ND ug/L 10/07/15 1.6 -- 10 ND -- 13.3 ND ND ND 3.17 J 9.18 J ND ND ND ND ND ND 12.9 ND ND ND ug/L 04/20/16 1.6 -- 10 ND ND ND ND 3.18 J ND ND 2.62 J ND 2.00 J 2.04 J 4.03 J ND 27.0 7.69 J 2.49 J 1.60 ND ug/L 09/26/16 1.6 -- 10 3.10 J -- 5.98 J 3.27 J 2.63 J 3.31 J 2.97 J 4.37 J 5.13 J 3.95 J 8.28 J ND 3.04 J 4.47 4.68 J 3.04 J 3.74 J ND ug/L 04/25/17 1.6 -- 10 2.85 B ND 26.9 ND ND ND 5.38 B 24.4 ND 1.94 B 8.19 B 10.2 ND 5.25 B 14.8 8.76 B 2.56 B 2.00 J ug/L 10/17/17 1.6 -- 10 ND -- 18.1 ND ND ND ND ND ND ND 3.37 J ND ND 2.85 J 2.37 J ND ND ND ug/L 04/16/18 1.6 -- 10 ND ND 14.4 ND ND ND 2.48 J ND ND ND ND ND ND ND 12.3 ND ND ND ug/L 10/16/18 1.6 10.0 -- ND -- 19.1 ND 3.24 J 3.43 J ND 5.86 J ND ND 10.9 ND 3.60 J 12.8 18.2 1.89 J ND ND ug/L 04/12/19 1.6 10.0 -- ND ND 4.04 J ND 2.20 J ND 2.49 J 86.0 1.75 J 2.69 J 12.2 4.16 J ND 4.02 J 14.9 ND ND ND ug/L 10/7/2019 1.6 10.0 -- ND ND 10.9 ND 1.98 J ND ND 3.27 J 3.42 J ND 10.1 ND ND 1.92 J 2.78 J ND ND ND u /L 04/20/20 1.6 10.0 -- ND ND 14.8 2.86 J 2.44 J 2.78 J 2.24 J 24.6 2.18 J 1.91 J 10.5 ND ND 3.20 J 2.76 J 2.39 J 1.82 J ND Lead ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 15 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 15 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 1.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND 5.3 J -- -- -- -- -- ND ug/L 12/05/08 1.9 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 1.6 -- 10 ND ND 1.7 J 3.2 J 3.3 J -- 2.5 J ND ND ND 3.1 J 10.5 -- -- -- -- -- ND ug/L 10/16/09 1.9 -- 10 ND ND 17.2 ND ND -- ND ND 5.37 J ND ND -- -- -- -- -- -- ND ug/L 04/28/10 1.9 -- 10 ND ND ND ND ND -- ND 2.41 J ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 1.9 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 1.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- 3.42 J ND ND ND ug/L 05/09/11 1.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 1.9 -- 10 ND ND ND ND ND -- 1.90 ND 1.90 1.90 ND ND ND 2.37 ND ND ND ND ug/L 04/17/12 1.9 -- 10 ND ND 3.71 J ND 2.28 J -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 1.9 -- 10 ND 2.64 J 3.47 J ND 4.26 J -- 2.11 J ND ND ND ND 3.18 J ND 2.97 J 4.22 J 3.94 J 3.63 J ND ug/L 05/02/13 1.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 2.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 2.1 -- 10 ND ND 4.05 J ND 2.70 J -- 2.81 J ND ND ND ND 3.49 J ND ND ND ND ND ND ug/L 10/06/14 2.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND 2.52 J ND ND ND ND ug/L 04/14/15 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 3.1 -- 10 ND -- ND ND ND 4.86 J ND 4.05 J ND ND ND ND ND 4.51 J ND ND ND ND ug/L 04/20/16 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 3.1 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND 3.52 J ND ND ND ND ND ug/L 04/25/17 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 3.1 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND 3.11 J ND ND ug/L 04/16/18 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 3.1 10.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 3.1 10.0 -- ND ND ND ND ND ND ND 6.04 J ND ND ND ND 4.86 J ND ND ND ND ND ug/L 10/7/2019 3.1 10.0 -- ND 3.13 J 7.68 J 3.24 J 4.46 J 5.35 J 4.28 J 6.44 J ND 3.93 J ND ND ND 4.48 J ND ND 4.92 J ND u /L 04/20/20 3.1 10.0 -- ND ND ND ND ND ND ND ND ND ND 4.90 J ND ND ND ND ND ND ND Nickel ug/L 03/01/99 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 100 ug/L ug/L 09/01/99 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 50 ND ND ND ND ND -- 97 ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND 6.9 J ND 6.9 J -- 6.3 J 17.1 J ND ND 6.9 J -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 5.9 J ND 4.3 J -- 4.2 J -- 2.5 J ND 8.4 J -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 50 ND ND 6.7 J ND 9.5 J -- ND 6.7 J ND ND ND 15.0 J -- -- -- -- -- ND ug/L 12/01/08 1.8 -- 50 ND ND 7.5 J ND 10.3 J -- 2.1 J 33.9 J ND ND 9.1 J 8.2 J -- -- -- -- -- ND ug/L 12/05/08 1.8 -- 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 0.6 -- 50 1.1 J ND 10.7 J ND 13.6 J -- 3.0 J 2.1 J 1.3 J 0.8 J 11.6 J 22.8 J -- -- -- -- -- ND ug/L 10/16/09 1.8 -- 50 ND ND 9.15 J ND 11.6 J -- 3.42 J 40.3 J 4.46 J ND 9.71 J -- -- -- -- -- -- ND ug/L 04/28/10 1.8 -- 50 ND ND 13.2 J ND 11.2 J -- 3.86 J 36.6 J 1.96 J ND 12.0 J 10.7 J -- -- -- -- -- ND ug/L 08/02/10 1.8 -- 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1.86 J ND 4.28 J ND ug/L 10/11/10 1.8 -- 50 ND ND 9.47 J ND 10.1 J -- 3.95 J 40.5 J ND ND 10.2 J 10.4 J -- -- 3.75 J 5.57 J 4.15 ND ug/L 05/09/11 1.8 -- 50 ND ND 20.2 J ND 10.9 J -- 3.66 J 9.44 J ND ND 17.7 J 11.2 J -- -- -- -- -- ND ug/L 10/12/11 1.8 -- 50 ND ND 19.5 J ND 14.2 J -- 3.80 J 63.2 1.80 1.80 20.0 J 10.5 J 8.29 J 3.25 2.89 J 2.17 J 3.30 J ND ug/L 04/17/12 1.8 -- 50 ND ND 16.7 J ND 11.0 J -- 5.40 J 9.09 J ND ND 22.7 J 8.58 J -- -- -- -- -- ND ug/L 10/25/12 1.8 -- 50 ND ND 18.0 J ND 12.4 J -- ND 44.8 J ND 2.66 J 23.4 J 11.3 J 4.38 J ND 3.34 J 1.80 2.98 ND ug/L 05/02/13 1.8 -- 50 1.94 J ND 15.0 J ND 13.3 J -- 3.53 J 2.41 J 2.06 J ND 30.7 J 9.75 J 4.89 J 1.92 J 5.09 J ND 4.08 J ND ug/L 09/24/13 1.8 -- 50 ND ND 20.8 J ND 12.5 J 25.9 J 2.37 J 41.1 J ND ND 28.9 J 10.7 J 5.33 J ND 3.41 J 2.16 J 5.19 J ND ug/L 04/24/14 1.8 -- 50 ND ND 14.5 J ND 13.6 J -- 2.82 J 2.06 J 2.30 J ND 37.1 J 6.43 J 5.22 J 8.39 J 3.79 J ND 5.89 J ND ug/L 10/06/14 1.8 -- 50 ND ND 26.2 J ND 11.7 J 25.9 J 2.99 J 54.3 4.07 J ND 37.7 J 6.97 J 3.68 J 2.62 J 2.49 J ND 9.65 J ND ug/L 04/14/15 1.8 -- 50 ND 3.35 J 24.9 J ND 16.0 J 27.9 J 7.04 J 4.44 J 2.07 J ND 33.8 J -- 4.18 J ND 3.66 J ND 5.47 J ND ug/L 10/07/15 1.8 -- 50 ND -- 27.7 J 3.06 J 12.1 J 33.4 J 2.87 J 32.5 J 4.65 ND 44.4 J 3.06 J 3.75 J 2.53 J 4.18 J ND ND ND ug/L 04/20/16 2.2 -- 50 ND ND 23.9 J ND 13.1 J 33.5 J 6.73 J 7.26 J 5.39 J ND 51.8 13.2 J 6.70 J 10.4 J 5.16 J ND 6.36 J ND ug/L 09/26/16 2.2 -- 50 ND -- 28.1 J ND 12.7 J 35.9 J 8.05 J 51.5 6.69 J ND 51.5 8.85 J 5.74 J 3.44 6.47 J ND 7.49 J ND ug/L 04/25/17 2.2 -- 50 ND ND 25.4 J ND 12.2 J 35.9 J 5.82 J ND ND ND 63.7 3.27 J 4.17 J ND 5.07 J ND ND ND ug/L 10/17/17 2.2 -- 50 6.26 J -- 25.5 J ND 10.4 J 36.9 J 5.83 J 50.9 4.20 J 9.12 J 62.6 ND 2.76 J ND 4.11 J ND 3.98 J ND ug/L 04/16/18 2.2 -- 50 ND ND 30.6 J ND 11.9 J 46.6 J 4.78 J 9.74 J ND ND 82.2 5.68 J 3.17 J 2.20 J 4.25 J ND ND ND ug/L 10/16/18 2.2 10.0 -- ND -- 29.0 ND 9.47 J 56.6 5.42 J 22.3 ND ND 78.9 3.79 J ND 2.53 J 22.1 2.64 J ND ND ug/L 04/12/19 2.2 10.0 -- ND ND 25.4 ND 9.59 B 59.0 4.40 B 2.25 B ND ND 96.2 5.40 B 4.42 B 4.58 B 6.58 B ND ND 2.78 ug/L 10/7/2019 2.2 10.0 -- ND ND 31.7 2.31 J 8.95 J 47.1 11.6 47.3 6.96 J ND 94.2 7.45 J 3.38 J 2.59 J 8.47 J ND 3.64 J ND u /L 04/20/20 2.2 10.0 -- ND ND 24.6 ND 8.21 J 42.2 3.94 J 12.5 ND ND 98.5 10.1 2.51 J ND ND ND 2.68 J ND ,,,> GOLDER 2of9 July 2020 TABLE 4 19131339.101 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Assessment Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constitent Detection Quantitation Reporting Units Date Well Limit Limit Limit Blanks MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Selenium ug/L 03/01/99 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 20 ug/L ug/L 09/01/99 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 50 ug/L ug/L 03/01/00 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 20 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND 4.0 J 3.4 J ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 2.7 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 3.4 -- 10 ND ND ND ND ND -- ND ND ND ND ND 3.8 J -- -- -- -- -- ND ug/L 10/16/09 2.7 -- 10 ND ND ND ND ND -- ND 6.5 J ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.83 -- 10 ND ND 16.1 J 5.04 J 4.18 J -- 2.57 J 17.3 2.09 J ND 17.0 3.19 J -- -- -- -- -- ND ug/L 08/02/10 0.83 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND 9.47 J ND ug/L 10/11/10 0.83 -- 10 1.31 J ND 9.61 J 4.27 J 4.02 J -- 2.54 J 11.6 ND ND 10.2 3.63 J -- -- -- -- -- ND ug/L 05/09/11 0.83 -- 10 1.07 J ND 29.9 6.46 J 6.00 J -- 1.91 J 4.76 J 1.08 J 1.10 J 24.7 3.38 J -- -- -- -- -- ND ug/L 10/12/11 2.7 -- 10 ND 2.80 J ND ND ND -- 2.39 J ND 0.926 J 0.83 ND 3.11 J 3.59 J 1.95 ND ND 3.57 J ND ug/L 04/17/12 0.83 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 0.83 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.91 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.91 -- 10 ND ND 1.23 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.91 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.91 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.91 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.91 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.91 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.91 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 6.2 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 6.2 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 6.2 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 6.2 10.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 6.2 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10.0 ug/L 10/07/19 6.2 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/20/20 6.2 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Silver ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 20 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 100 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 2.5 J ND ND -- ND -- ND ND 2.6 J -- -- -- -- -- -- ND ug/L 04/29/08 2.0 -- 10 2.7 J 2.6 J 2.7 J ND ND -- ND ND 2.7 J 2.1 J 2.9 J ND -- -- -- -- -- ND ug/L 12/01/08 1.9 -- 10 ND ND ND ND ND -- ND ND 2.3 J ND ND ND -- -- -- -- -- ND ug/L 04/17/09 1.0 -- 10 ND ND 3.6 J 1.6 J ND -- ND ND ND ND 3.9 J ND -- -- -- -- -- ND ug/L 10/16/09 1.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 1.9 -- 10 ND ND 4.47 ND ND -- ND 4.32 J ND ND 3.07 J 2.50 J -- -- -- -- -- ND ug/L 08/02/10 1.9 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 1.9 -- 10 ND ND 3.27 J ND ND -- ND ND ND ND 3.25 J ND -- -- ND ND 5.30 ND ug/L 05/09/11 1.9 -- 10 ND ND 2.84 J ND ND -- ND ND ND ND 2.28 J ND -- -- -- -- -- ND ug/L 10/12/11 1.9 -- 10 ND ND 2.91 J ND ND -- ND 3.63 J ND ND ND 3.50 J ND ND ND ND ND ND ug/L 04/17/12 1.9 -- 10 ND ND 2.68 J ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 1.9 -- 10 ND ND 3.09 J ND ND -- ND 3.04 J ND ND ND 2.72 J ND ND ND ND ND ND ug/L 05/02/13 1.9 -- 10 ND ND 2.83 J ND ND -- ND ND ND ND 2.11 J ND ND ND ND ND ND ND ug/L 09/24/13 1.9 -- 10 ND ND 2.71 J ND ND ND ND 2.61 J ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 1.9 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND 2.43 J ND ND ND ND ug/L 10/06/14 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 1.9 -- 10 ND ND 3.24 J ND ND ND ND ND ND ND 2.51 J -- ND ND ND ND ND ND ug/L 10/07/15 1.9 -- 10 2.79 J -- 7.83 J ND ND ND ND ND ND ND 5.84 J ND ND ND ND ND ND ND ug/L 04/20/16 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 1.9 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND 2.79 J ND ND ND ND ND ND ND ug/L 10/17/17 1.9 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 1.9 10.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 1.9 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 1.9 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 1.9 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Thallium ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- 14 29 ND ND ND ND -- ND -- -- -- ND IMAC = 0.2 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 2 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND 13 -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 10 J ND ND ND ND -- 10 J ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND 16 11 ND -- ND 16 ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND 23 ND ND -- ND 25 ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- 0.041 J 0.045 J 0.045 J 0.04 J 0.051 J -- 0.047 J -- 0.047 J 0.037 J 0.036 -- -- -- -- -- -- ND ug/L 04/29/08 0.036 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.036 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/05/08 4.8 -- 5.5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 0.036 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.11 -- 5.5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 05/09/11 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND 0.154 J ND ND ND ND ND ug/L 04/17/12 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.11 -- 5.5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.23 J ND ug/L 04/14/15 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.11 -- 5.5 -- -- ND ND ND ND ND ND ND ND ND -- ND ND -- ND -- ND ug/L 04/20/16 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.11 -- 5.5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.11 -- 5.5 0.239 J 0.168 J ND 0.301 J 0.321 J ND 0.288 J 0.200 J 0.173 J 0.180 J ND ND 0.265 J 0.221 J 0.191 J 0.138 J 0.200 J ND ug/L 10/17/17 0.11 -- 5.5 0.184 J -- 0.327 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.55 5.00 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.55 5.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/7/2019 0.22 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.220 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Vanadium ug/L 03/01/99 -- -- 40 ND ND 62 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND IMAC = 0.3 ug/L ug/L 09/01/99 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 40 ND ND 76 ND 46 -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 40 ND ND 44 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 40 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- 3.4 J ND ND ND ND -- ND ND ND 14.5 J ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- 2.3 B ND ND ND ND -- ND -- ND 14.2 B ND -- -- -- -- -- -- ND ug/L 04/29/08 1.0 -- 25 4.6 J 1.6 J ND ND ND -- 9.1 J 4.1 J 1.8 J 15.4 J ND ND -- -- -- -- -- ND ug/L 12/01/08 1.4 -- 25 2.3 J ND ND ND ND -- ND ND ND 8.5 J ND ND -- -- -- -- -- ND ug/L 12/05/08 1.4 -- 25 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 04/17/09 0.7 -- 25 4.0 J ND ND 2.2 J 6.4 J -- 6.8 J ND ND 10.0 J 2.1 J 50.1 -- -- -- -- -- ND ug/L 10/16/09 1.4 -- 25 3.92 J ND ND 4.06 J 3.27 J -- 1.65 J 2.02 J 6.2 J 9.44 J 6.24 J -- -- -- -- -- -- ND ug/L 04/28/10 1.4 -- 25 3.65 J ND ND 3.66 J 4.29 J -- 5.76 J ND ND 8.15 J 2.02 J ND -- -- -- -- -- ND ug/L 08/02/10 1.4 -- 25 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 9.3 J 3.15 J 2.14 J ND ug/L 10/11/10 1.4 -- 25 3.81 J ND ND 2.11 J 2.29 J -- 3.30 J 4.32 J ND 7.99 J 1.65 J 2.42 J -- -- 18.1 J 56.6 2.65 ND ug/L 05/09/11 1.4 -- 25 3.84 J ND ND 3.11 J ND -- 6.65 J ND ND 9.54 J 1.80 J ND -- -- -- -- -- ND ug/L 10/12/11 1.4 -- 25 3.23 J ND ND 2.61 J ND -- 5.40 J 2.33 J ND 7.82 J ND ND 8.23 J 9.48 3.91 J 12.8 J 2.57 J ND ug/L 04/17/12 1.4 -- 25 3.88 J ND ND 1.93 J 2.72 J -- 3.04 J ND ND 8.14 J ND ND -- -- -- -- -- ND ug/L 10/25/12 1.4 -- 25 4.23 J 1.40 ND 2.30 J 1.90 J -- 2.36 J 2.99 J 8.02 J ND 1.52 J ND ND 4.50 J 8.05 J 5.40 J 1.55 ND ug/L 05/02/13 1.4 -- 25 6.85 J ND ND 2.64 J 4.49 J -- 6.98 J 2.61 J ND 6.26 J 2.68 J 3.28 J ND ND 8.48 5.09 ND ND ug/L 09/24/13 1.4 -- 25 3.27 J ND ND 2.47 J 2.87 J 1.47 J 1.67 J ND ND 4.93 J ND 8.37 J 3.08 J 1.98 J 1.81 J 21.2 J ND ND ug/L 04/24/14 1.4 -- 25 3.87 J ND ND 2.65 J ND -- 3.81 J ND ND 4.90 J 2.18 J 7.66 J ND 1.71 J 3.93 J 6.14 J ND ND ug/L 10/06/14 1.4 -- 25 3.32 J ND ND 2.28 J ND 1.87 J ND ND ND 3.45 J 2.91 J 3.42 J ND 3.30 J 13.1 J 7.07 J ND ND ug/L 04/14/15 1.4 -- 25 3.28 J ND ND ND 6.41 J ND ND ND ND 2.05 J ND -- ND ND 2.22 J 14.0 J ND ND ug/L 10/07/15 1.4 -- 25 4.71 J -- ND 12.8 J ND 2.52 J 9.63 J 3.18 J ND 2.32 J 1.92 J 12.8 J ND ND 5.44 J 3.74 J 3.59 J ND ug/L 04/20/16 1.4 -- 25 4.66 J ND ND 3.04 J 4.60 J 2.76 J 2.82 J 1.75 J ND 3.07 J 3.75 J 14.9 J ND ND 2.25 J 5.60 J ND ND ug/L 09/26/16 1.4 -- 25 3.74 J -- ND 2.08 J ND 1.89 J ND ND ND 1.61 J 1.96 J 2.07 J ND ND 4.92 J ND ND ND ug/L 04/25/17 1.4 -- 25 6.06 J ND ND ND 1.48 J 2.17 J 12.5 J 6.09 J ND 1.75 J 2.76 J 13.9 J ND ND 12.4 J 12.0 J 7.32 J ND ug/L 10/17/17 1.4 -- 25 4.84 J -- 3.40 J 2.53 J ND 3.08 J 5.83 J 7.31 J ND ND 2.51 J 4.72 J 2.14 J 2.91 J 7.44 J 4.16 J ND ND ug/L 04/16/18 1.4 -- 25 3.67 J 2.04 J ND ND ND 2.83 J 5.83 J ND ND ND 2.15 J 5.90 J ND ND 4.33 J 2.44 J 1.96 J ND ug/L 10/16/18 1.4 10.0 -- 4.20 J -- ND ND 2.81 J 4.25 J 1.83 J 2.11 J ND ND ND 3.93 J 5.52 J 5.28 J 5.17 J 1.68 J ND ND ug/L 04/12/19 1.4 10.0 -- 5.22 J ND ND ND 2.08 J 3.54 J 4.30 J ND ND ND 3.21 J 5.77 J ND 1.74 J 2.15 J 2.62 J ND ND ug/L 10/7/2019 1.4 10.0 -- 4.93 J ND ND ND ND 2.61 J ND ND ND ND 2.23 J 3.87 J ND 1.40 J 2.48 J 2.27 J ND ND ug/L 04/20/20 1.4 10.0 -- 4.15 J ND ND 1.79 J 1.81 J 3.09 J 2.56 J ND ND ND 3.66 J 1.90 J ND ND 1.84 J 2.53 J ND ND Zinc ug/L 03/01/99 -- -- 50 ND ND 62 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 1000 ug/L ug/L 09/01/99 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 5000 ug/L ug/L 03/01/00 -- -- 50 ND ND 16 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 50 ND ND 52 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 50 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- 2.2 J ND ND ND 3.0 J -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- 2.5 J ND ND 1.3 J 2.1 J -- 69.7 -- 2.3 J ND 1.0 -- -- -- -- -- -- ND ug/L 04/29/08 1.0 -- 10 8.7 J 1.3 J ND ND 2.5 J -- 2.5 J 30 ND ND ND 3.5 J -- -- -- -- -- ND ug/L 12/01/08 3.8 -- 10 7.8 J ND ND ND ND -- ND ND ND ND ND 20.5 -- -- -- -- -- ND ug/L 04/17/09 3.4 -- 10 9.4 J ND 5.1 J ND 7.1 J -- 4.2 J 5.7 J 3.7 J ND 4.7 J 37.5 -- -- -- -- -- ND ug/L 10/16/09 3.8 -- 10 7.66 J ND ND 8.88 J 7.31 J -- ND 4.87 J 60.4 ND 4.03 J -- -- -- -- -- -- ND ug/L 04/28/10 3.8 -- 10 7.20 J ND 5.77 J ND 6.28 J -- ND 4.08 J 6.49 J ND ND ND -- -- -- -- -- ND ug/L 08/02/10 3.8 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 96.8 5.90 J 7.60 J ND ug/L 10/11/10 3.8 -- 10 ND 8.16 J ND ND ND -- ND ND ND ND ND ND -- -- 409 35.4 8.07 ND ug/L 05/09/11 3.8 -- 10 4.92 J 7.58 J 5.52 J ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 3.8 -- 10 ND ND 5.46 J ND ND -- ND ND ND ND ND ND 5.78 J 62.0 260 9.04 J 8.37 J ND ug/L 04/17/12 3.8 -- 10 4.48 J ND 3.95 J ND 5.80 J -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/25/12 3.8 -- 10 11.1 ND 5.48 J ND ND -- ND 8.58 J ND ND 4.57 J 4.94 J 3.91 J 29.8 272 4.39 J 5.97 ND ug/L 05/02/13 3.8 -- 10 7.37 J 4.11 J ND ND 4.31 J -- 4.60 J ND ND ND ND ND ND 23.3 676 5.54 4.19 ND ug/L 09/24/13 3.8 -- 10 ND ND ND ND 5.36 J 4.03 J 4.85 J ND ND ND ND 10.2 ND 20.0 438 11.8 7.82 J ND ug/L 04/24/14 3.8 -- 10 ND ND 4.33 J ND ND -- 11.4 ND ND ND ND 5.56 J 8.42 J 350 635 9.92 J 4.21 J ND ug/L 10/06/14 3.8 -- 10 ND 7.21 J 16.5 4.05 J 4.79 J 4.79 J 10.7 ND 4.39 J ND 4.60 J 5.60 J 4.52 J 48.5 58.2 6.33 J 12.3 ND ug/L 04/14/15 3.8 -- 10 12.3 9.44 J ND ND 8.67 J 6.39 J 31.1 4.49 J 6.85 J 3.80 3.80 -- ND 26.5 529 11.2 4.38 J ND ug/L 10/07/15 3.8 -- 10 4.19 J -- ND 7.21 J ND ND 7.74 J 5.12 J ND ND ND 7.21 J ND 20.2 280 ND 12.1 ND ug/L 04/20/16 4.4 -- 10 15.1 ND ND ND ND ND 13.7 9.56 J ND ND ND 9.19 J ND 350 588 39.2 ND ND ug/L 09/26/16 4.4 -- 10 4.65 J -- ND ND 5.23 J ND 7.93 J 8.75 J ND 6.36 J 14.8 ND ND 58.0 52.6 ND 5.91 J ND ug/L 04/25/17 4.4 -- 10 5.06 J 5.09 J ND ND 5.84 J ND 11.0 8.99 J ND ND ND 7.84 J ND 40.6 730 ND 5.31 J ND ug/L 10/17/17 4.4 -- 10 4.64 J -- ND ND ND ND 4.74 J 6.53 J ND ND ND ND 5.21 J 24.4 67.5 ND 7.07 J ND ug/L 04/16/18 4.4 -- 10 6.74 J 5.94 J 4.67 J ND ND ND 11.8 4.98 J ND ND ND 6.46 J ND 48.3 388 ND ND ND ug/L 10/16/18 4.4 10.0 -- 6.31 J -- 28.2 ND 5.80 J ND 11.7 7.28 J ND ND ND ND 14.0 61.1 479 7.96 J ND ND ug/L 04/12/19 4.4 10.0 -- 13.0 ND 9.25 J ND 15.8 ND 16.5 68.9 ND ND ND 4.53 J 5.37 J 78.1 899 ND ND ND ug/L 10/07/19 4.4 10.0 -- 8.73 J 6.46 J 6.80 J 6.48 J 9.23 J 6.44 J 22.4 9.94 J 9.82 J 22.3 10.6 ND ND 31.1 154 7.03 J 7.29 J ND ug/L 04/20/20 4.4 10.0 -- ND ND ND 4.71 J ND ND 17.1 21.1 ND ND ND 5.38 J ND 50.2 394 ND ND ND ,,,> GOLDER 3of9 July 2020 TABLE 4 19131339.101 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Assessment Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constitent Detection Quantitation Reporting Units Date Well Limit Limit Limit Blanks MW-113 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Acetone ug/L 03/01/99 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 6000 ug/L ug/L 09/01/99 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- 3.8 B 5.5 B 18 B 1.6 J ND -- 12 J -- ND ND 11 B -- -- -- -- -- -- ND ug/L 04/29/08 0.62 -- 100 0.62 5.9 J 5.5 J ND ND -- 3.4 J 4.8 J ND ND ND 7.4 J -- -- -- -- -- ND ug/L 12/01/08 1.5 -- 100 ND ND ND 7.3 J ND -- ND 10 J ND ND ND 6.1 J -- -- -- -- -- ND ug/L 10/16/09 1.5 -- 100 ND ND ND ND ND -- ND 20 J 2.4 J ND ND -- -- -- -- -- -- ND ug/L 04/28/10 1.5 -- 100 ND ND ND ND ND -- ND 5.4 J 2.0 J ND ND ND -- -- -- -- -- ND ug/L 08/02/10 1.5 -- 100 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND 3 J ND ND ug/L 10/11/10 1.5 -- 100 ND ND ND 5.2 J ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 1.2 -- 100 ND ND ND ND ND -- ND ND ND ND ND 16 J -- -- -- -- -- ND ug/L 10/12/11 1.2 -- 100 ND ND ND ND ND -- ND ND ND ND ND 5.1 J ND ND ND ND ND ND ug/L 04/17/12 1.2 -- 100 ND ND ND 5.8 J ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 1.2 -- 100 ND ND 3.3 J ND ND -- ND 9.8 J ND ND ND 5.4 J ND ND ND ND ND ND ug/L 05/02/13 1.2 -- 100 ND ND ND ND ND -- ND ND ND ND ND 28 J ND ND ND ND ND ND ug/L 09/24/13 1.2 -- 100 ND ND 4 J ND ND 4.7 J ND 7.1 J ND 2.2 J ND ND ND ND ND ND ND ND ug/L 04/24/14 1.2 -- 100 ND ND ND ND ND -- ND ND ND ND ND 36 J ND ND ND ND ND ND ug/L 10/06/14 1.2 -- 100 ND ND ND ND ND ND ND 16 J ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 1.2 -- 100 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 1.2 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 1.2 -- 100 ND 1.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.2 ND ug/L 09/26/16 10 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 10 -- 100 16 B 20 B 19 B 21 B 12 B 33 B 14 B ND 11 B 11 B 28 B 33 J 16 B 15 B 20 B 14 B ND 28 J ug/L 10/17/17 10 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 10 -- 100 ND ND ND ND ND ND ND 44 J ND ND ND 14 J ND ND ND ND ND ND ug/L 10/16/18 10 20 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/20/20 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Benzene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 1 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug L 09/26/07 -- -- -- ND ND 0.77 J .5 ND -- N D -- N D N D N D -- -- -- -- -- -- ND ug/L 04/29/08 0.2 -- 1 ND ND ND 1.8 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.2 -- 1 ND ND 1.1 1.6 0.52 J -- ND 2.9 ND ND ND ND -- -- -- -- -- ND ug/L 02/13/09 0.2 -- 1 -- -- -- -- -- -- -- 1.8 -- -- -- -- -- -- -- -- -- ND ug/L 02/13/09 0.2 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 04/17/09 0.2 -- 1 ND ND 0.7 J 1.4 ND -- ND ND 0.42 J ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.2 -- 1 ND ND 1.4 1.9 0.7 J -- ND 1.7 ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.05 -- 1 ND ND 1.1 1.2 0.80 J -- ND 1.6 0.64 J ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.2 -- 1 -- ND 1.4 0.88 J -- -- -- -- ND ND -- -- -- ND ND ND ND ND ug/L 10/11/10 0.2 -- 1 ND ND 1.2 0.67 J 0.96 J -- ND 2.2 ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.68 -- 1 ND ND 0.78 J ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.68 -- 1 ND ND 0.98 J ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.15 -- 1 ND ND 0.91 J ND 1.1 -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.15 -- 1 ND ND 1.5 ND 1.4 -- ND 2.3 ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.15 -- 1 ND ND 0.45 J ND 1.3 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.15 -- 1 ND ND 1.1 ND 1.3 0.62 J ND 1.6 ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.15 -- 1 ND ND ND ND 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.15 -- 1 ND ND 1.1 ND 1.1 0.41 J ND 2.0 ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.15 -- 1 ND ND 0.73 J ND 1.5 0.67 J ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.15 -- 1 ND -- 1.2 ND 1.3 0.73 J ND 1.4 ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.15 -- 1 ND ND 0.78 J ND 1.4 0.57 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.15 -- 1 ND -- ND ND ND 0.67 J ND 2.1 ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.15 -- 1 ND ND ND ND 1.4 0.78 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.15 -- 1 ND -- 1.8 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.15 -- 1 ND ND ND ND 1.2 0.67 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.15 1.0 -- ND -- ND ND 1.1 0.60 J ND 0.69 J ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.15 1.0 -- ND ND ND ND 0.93 J 0.45 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/7/2019 0.15 1.0 -- ND ND 1.5 ND 0.84 J 0.54 J ND 1.2 ND ND 0.32 J ND ND ND ND ND ND ND u /L 04/20/20 0.15 1.0 -- ND ND ND ND 0.62 J ND ND ND ND ND ND ND ND ND ND ND ND ND Carbon Tetrachloride ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 0.3 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.35 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.38 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.69 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.69 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.17 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.17 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.17 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.17 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 1 ND -- 0.47 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.17 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.17 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.17 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/20/20 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Chlorobenzene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 50 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 100 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND 2.5 J ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 1.1 J 0.49 J ND -- 0.50 J -- ND ND 2.0 J -- -- -- -- -- -- ND ug/L 04/29/08 0.27 -- 3 ND ND ND 0.52 J ND -- ND ND ND ND 2.2 J ND -- -- -- -- -- ND ug/L 12/01/08 0.27 -- 3 ND ND 1.8 J 0.54 J ND -- ND 4.7 ND ND 1.9 J ND -- -- -- -- -- ND ug/L 04/17/09 0.27 -- 3 ND ND 1.0 J 0.49 J ND -- ND ND ND ND 2.0 J ND -- -- -- -- -- ND ug/L 10/16/09 0.27 -- 3 ND ND 2.9 J 0.78 J ND -- ND 5.0 ND ND 2.1 J -- -- -- -- -- -- ND ug/L 04/29/10 0.069 -- 3 -- ND 1.4 J 0.48 J -- -- -- -- ND ND -- -- -- ND -- -- -- ND ug/L 08/02/10 0.27 -- 3 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.27 -- 3 ND ND 3.2 0.74 J ND -- ND 7.4 ND ND 2.8 J ND -- -- ND ND ND ND ug/L 05/09/11 0.74 -- 3 ND ND 1.2 J 0.78 J ND -- ND ND ND ND 2.3 J ND -- -- -- -- -- ND ug/L 10/12/11 0.74 -- 3 ND ND ND 0.99 J ND -- ND ND ND ND 2.3 J ND ND ND ND ND ND ND ug/L 04/17/12 0.17 -- 3 ND ND 2.0 J 0.51 J ND -- ND 0.71 J ND ND 2.5 J ND -- ND ND ND ND ND ug/L 10/25/12 0.17 -- 3 ND ND 3.5 0.74 J ND -- ND 5.7 ND ND 1.8 J ND ND ND ND ND ND ND ug/L 05/02/13 0.17 -- 3 ND ND 1.4 J 0.88 J ND -- ND ND ND ND 2.4 J ND ND ND ND ND ND ND ug/L 09/24/13 0.17 -- 3 ND ND 2.9 J 0.89 J ND 2.0 J ND 4.3 ND ND 2.0 J ND ND 0.52 J ND ND ND ND ug/L 04/24/14 0.17 -- 3 ND ND 3.0 1.0 J ND -- ND ND ND ND 2.2 J ND ND ND ND ND ND ND ug/L 10/06/14 0.17 -- 3 ND ND 4.3 0.72 J 0.45 J 1.5 J ND 5.8 ND ND 2.2 J ND ND 0.62 J ND ND ND ND ug/L 04/14/15 0.17 -- 3 ND ND 2.0 J 0.63 J ND 2.4 J ND ND ND ND 1.7 J -- ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 3 ND -- 3.4 ND ND 2.8 J ND 3.6 ND ND 1.9 J ND ND 0.60 J ND ND ND ND ug/L 04/20/16 0.17 -- 3 ND ND 3.3 0.87 J ND 2.5 J ND 0.73 J ND ND 2.0 J ND ND ND ND ND ND ND ug/L 09/26/16 0.17 -- 3 ND -- 4.3 ND ND 2.7 J ND 6.4 ND ND ND ND ND 0.40 J ND ND ND ND ug/L 04/25/17 0.17 -- 3 ND ND 2.0 J 0.87 J ND 3.4 ND ND ND ND 2.2 J ND ND 0.45 J ND ND ND ND ug/L 10/17/17 0.17 -- 3 ND -- ND 1.2 J ND 3.8 ND 7.5 ND ND 2.5 J ND ND 0.60 J ND ND ND ND ug/L 04/16/18 0.17 -- 3 ND ND 1.9 J 0.97 J ND 3.4 ND 0.82 J ND ND 1.8 J ND ND ND ND ND ND ND ug/L 10/16/18 0.17 1.0 -- ND -- 1.1 0.85 J ND 3.6 ND 2.5 ND ND 1.9 ND ND ND ND ND ND ND ug/L 04/12/19 0.17 1.0 -- ND ND 2.9 0.87 J ND 3.5 ND ND ND ND 1.9 ND ND ND ND ND ND ND ug/L 10/07/19 0.17 1.0 -- ND ND 6.1 0.88 J 0.23 J 3.2 ND 5.1 ND ND 1.9 ND ND 0.41 J ND ND ND ND u /L 04/20/20 0.17 1.0 -- ND ND 3.0 0.63 J ND 2.5 ND 1.1 ND ND 1.3 ND ND ND ND ND ND ND Chloroethane ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 3000 ug/L ug/L 09/01/99 -- -- 10 ND ND 33 ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 10 ND ND 16 ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND 22 ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND 24 ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 2.8 J ND ND -- 1.6 J -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.3 -- 10 ND ND ND ND 1.8 J -- ND ND ND ND 1.6 J ND -- -- -- -- -- ND ug/L 12/01/08 0.3 -- 10 ND ND 3.1 J ND 2.8 J -- ND ND ND ND 1.6 J ND -- -- -- -- -- ND ug/L 04/17/09 0.3 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.3 -- 10 ND ND 1.7 J 0.61 J ND -- ND 0.3 ND ND 0.3 -- -- -- -- -- -- ND ug/L 04/28/10 0.18 -- 10 ND ND 0.95 J ND 1.6 J -- ND ND ND ND 0.70 J ND -- -- -- -- -- ND ug/L 08/02/10 0.3 -- 10 -- ND 1.5 J ND -- -- -- -- ND ND -- -- -- 0.46 J ND ND ND ND ug/L 10/11/10 0.3 -- 10 ND ND 1.6 J 0.57 J 1.6 J -- ND ND ND ND 0.8 J ND -- -- ND ND ND ND ug/L 05/09/11 0.75 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.75 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.23 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.23 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.23 -- 10 ND ND ND ND 2.1 J -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.23 -- 10 ND ND ND 0.47 J ND ND ND ND ND ND ND ND ND 0.81 J ND ND ND ND ug/L 04/24/14 0.23 -- 10 ND ND ND ND 1.8 J -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.23 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.23 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.23 -- 10 ND -- 0.94 J ND 1.5 J 1.2 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.23 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.23 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.23 -- 10 ND ND ND ND 0.98 J ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.23 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/7/2019 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/20/20 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ,,,> GOLDER 4of9 July 2020 TABLE 4 19131339.101 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Assessment Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constitent Detection Quantitation Reporting Units Date Well Limit Limit Limit Blanks MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Chloroform ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- NC 2L = 70 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- EPA MCL = 80 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.2 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.2 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.2 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.2 -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.2 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 08/02/10 0.2 -- 5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.2 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.7 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.7 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.18 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.18 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.18 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.18 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.18 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.18 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.18 -- 5 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.18 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.18 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.18 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.18 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.18 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.18 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.18 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.18 1.0 -- ND 0.67 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/7/2019 0.18 1.0 -- ND 0.63 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/20/20 0.18 1.0 -- ND 0.69 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,2-Dichlorobenzene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 20 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 600 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND 0.32 J ND ND -- ND 0.41 J ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 0.48 J ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.27 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.27 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.27 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.27 -- 5 ND ND ND ND ND -- ND 0.47 J ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.052 -- 5 ND ND ND ND ND -- ND 0.43 J ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.27 -- 5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.27 -- 5 ND ND 0.43 J ND ND -- ND 0.51 J ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.11 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.11 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.19 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.19 -- 5 ND ND 0.41 J ND ND -- ND 0.5 J ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.19 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.19 -- 5 ND ND ND ND ND ND ND 0.5 J ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.19 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.19 -- 5 ND ND 0.61 J ND ND ND ND 0.46 J ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.19 -- 5 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.19 -- 5 ND -- 0.46 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.19 -- 5 ND ND 0.55 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.19 -- 5 ND -- 0.57 J ND ND ND ND 0.55 J ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.19 -- 5 ND ND 0.44 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.19 -- 5 ND -- 1.0 J ND ND ND ND 0.72 J ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.19 -- 5 ND ND 0.41 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.19 1.0 -- ND -- 0.57 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.19 1.0 -- ND ND 0.55 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/7/2019 0.19 1.0 -- ND ND 0.87 J ND ND ND ND 0.38 J ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.19 1.0 -- ND ND 0.54 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,4-Dichlorobenzene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND 6.4 ND ND ND ND -- ND -- -- -- ND NC 2L = 6 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 75 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND 5.0 ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND 6.0 ND ND -- ND 7.0 ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND 3.3 ND ND 0.89 J -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 5.0 ND ND -- 0.93 J -- ND ND 0.90 J -- -- -- -- -- -- ND ug/L 04/29/08 0.20 -- 1 ND ND ND ND ND -- ND ND ND ND 0.73 J ND -- -- -- -- -- ND ug/L 12/01/08 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND 0.59 J ND -- -- -- -- -- ND ug/L 02/13/09 0.38 -- 1 -- -- -- -- -- -- -- 4.1 -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.38 -- 1 ND ND 6.9 0.67 J ND -- ND 3.8 ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.10 -- 1 ND ND 0.61 J ND -- ND 3.4 0.53 J ND 0.55 J ND -- -- -- -- -- ND ug/L 08/02/10 0.38 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.38 -- 1 ND ND 7.5 0.54 J ND -- 0.5 J 4.7 ND ND 0.56 J ND -- -- ND ND ND ND ug/L 05/09/11 0.79 -- 1 ND ND 4.0 0.87 J ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.79 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.19 -- 1 ND ND 4.6 0.55 J ND -- ND 0.51 J 0.42 J ND 0.52 J ND -- ND ND ND ND ND ug/L 10/25/12 0.19 -- 1 ND ND 7.7 0.94 J ND -- ND 4.8 ND ND 0.44 J ND ND ND ND ND ND ND ug/L 05/02/13 0.19 -- 1 ND ND 3.4 1.2 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.19 -- 1 ND ND 4.3 1.5 ND 0.87 J ND 3.2 ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.19 -- 1 ND ND 5.6 2.0 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.19 -- 1 ND ND 8.2 1.3 ND 0.96 J ND 3.8 ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.19 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.19 -- 1 ND -- 7.6 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.19 -- 1 ND ND 7.9 2.5 ND 1.0 ND 0.72 J ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.19 -- 1 ND -- ND 2.2 ND 1.2 ND 4.3 ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.19 -- 1 ND ND 5.3 3.0 0.55 J 1.6 ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.19 -- 1 ND -- 16 3.3 0.57 J 1.4 ND 5.9 ND ND ND ND ND 0.40 J ND ND ND ND ug/L 04/16/18 0.19 -- 1 ND ND 6.5 3.1 0.53 J 1.5 ND 0.81 J ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.19 1.0 -- ND -- 9.7 3.2 0.48 J 1.6 ND 2.3 ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.19 1.0 -- ND ND 7.9 3.3 ND 1.1 ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/7/2019 0.19 1.0 -- ND ND 14 3.3 0.35 J 1.2 ND 3.6 ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.19 1.0 -- ND ND 7.5 2.5 ND 0.76 J ND 1.1 ND ND ND ND ND ND ND ND ND ND 1, 1 -Dichloroethane ug/L 03/01/99 -- -- 5 ND ND ND 13 ND -- 26 ND 33 ND 7.9 ND -- ND -- -- -- ND NC 2L = 6 ug/L ug/L 09/01/99 -- -- 5 ND ND ND 9.2 ND -- 13 ND 12 ND 7.4 -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND 7.5 ND 5.1 ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND 6.3 ND -- 11 ND 5.9 ND 5.3 -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- 10 ND 9.7 ND 5.0 ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND 9.5 7.0 -- 11 ND 69 ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND 9.1 ND -- 8.7 ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- 6.3 ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND 7.8 ND -- 5.8 ND 5.6 ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- 5.5 ND 6.9 ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND 20 5.4 -- 7.7 ND ND 5.7 ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND 12 6.0 -- 5.0 ND 9.0 5.0 ND ND -- 25 -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND 17 6.0 -- 5.0 ND 9.0 ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND 16 7.3 -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND 1.7 J 11 6.9 -- 2.0 J 0.09 2.6 J 2.7 J 1.2 J -- -- -- -- -- -- ND ug/L 09/26/07 -- ND ND 2.8 J 8. -- 1.6 J -- 2.9 J 2.5 J 1.1 J -- -- -- -- -- -- ND ug/L 04/29/08 0.33 -- 5 ND ND 1.1 J 15 12 -- ND ND ND 2.0 J 1.2 J ND -- -- -- -- -- ND ug/L 12/01/08 0.33 -- 5 ND ND 2.5 J 15 14 -- ND ND ND 1.2 J 1.2 J ND -- -- -- -- -- ND ug/L 04/17/09 0.33 -- 5 ND ND 1.5 J 11 12 -- ND ND 0.72 J 0.89 J 0.87 J ND -- -- -- -- -- ND ug/L 10/16/09 0.33 -- 5 ND ND 3.0 J 17 12 -- 0.62 J ND 1.7 J 0.49 J 0.73 J -- -- -- -- -- -- ND ug/L 04/28/10 0.05 -- 5 ND ND 2.3 J 16 15 -- 0.91 J ND 1.1 J ND 0.79 J ND -- -- -- -- -- ND ug/L 08/02/10 0.33 -- 5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND 4.2 J ND ND ug/L 10/11/10 0.33 -- 5 ND ND 3.0 J 17 15 -- 0.74 J ND 0.42 J ND 0.83 J ND -- -- ND 3.8 J ND ND ug/L 05/09/11 0.08 -- 5 ND ND 1.1 J 6 -- ND ND ND ND 0.79 J ND -- -- -- -- -- ND ug/L 10/12/11 0.08 -- 5 ND ND 1.7 J 12 11 -- ND ND ND ND ND ND 0.88 J 5.8 ND 0.88 J ND ND ug/L 04/17/12 0.13 -- 5 ND ND 1.2 J 9.3 12 -- ND ND 0.65 J 0.64 J 0.66 J ND -- 6.9 ND 5.4 ND ND ug/L 10/25/12 0.13 -- 5 ND ND 1.6 J 11 14 -- ND ND 0.79 J 0.85 J ND ND 0.90 J ND ND 5.0 ND ND ug/L 05/02/13 0.13 -- 5 ND ND 0.77 J 14 17 -- ND ND ND 0.90 J 0.53 J ND 0.74 J 7.9 ND 4.5 J ND ND ug/L 09/24/13 0.13 -- 5 ND ND 0.89 J 11 10 1.4 J 0.44 J ND ND ND 0.46 J ND 0.90 J ND ND 5.6 ND ND ug/L 04/24/14 0.13 -- 5 ND ND 0.79 J 10 15 -- ND ND ND 0.54 J 0.42 J ND 0.80 J ND ND ND ND ND ug/L 10/06/14 0.13 -- 5 ND ND 0.53 J 8.4 11 1.2 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.13 -- 5 ND ND 0.45 J 7.1 14 1.2 J ND ND ND 0.89 J 0.13 -- 0.96 J 5.7 ND ND ND ND ug/L 10/07/15 0.13 -- 5 ND -- 0.86 J ND 14 0.99 J ND ND ND 0.79 J ND ND ND 5.8 ND 3.7 J ND ND ug/L 04/20/16 0.13 -- 5 ND ND 0.46 J 9.5 12 0.95 J ND ND ND 1.2 J ND ND 0.9 J 0.42 J ND 5.5 ND ND ug/L 09/26/16 0.13 -- 5 ND -- 0.76 J 8.6 12 1.0 J ND ND ND 0.63 J ND ND 0.81 J 4.6 ND ND ND ND ug/L 04/25/17 0.13 -- 5 ND ND ND 7.5 12 0.80 J ND ND ND 1.0 J ND ND 0.91 J 3.8 J ND 0.51 J ND ND ug/L 10/17/17 0.13 -- 5 ND -- 0.54 J 6.3 10 0.85 J ND ND ND 1.0 J ND ND 0.66 J 4.0 J ND 4.6 J ND ND ug/L 04/16/18 0.13 -- 5 ND ND ND 7.2 11 0.77 J ND ND ND 1.7 J ND ND 0.91 J 2.7 J ND 7.8 ND ND ug/L 10/16/18 0.13 1.0 -- ND -- ND 5.3 5.5 0.55 J ND ND ND 1.1 ND ND ND ND ND 1.1 ND ND ug/L 04/12/19 0.13 1.0 -- ND ND ND 4.8 4.4 ND ND ND ND 0.99 J ND ND 0.66 J 0.41 J ND 4.2 ND ND ug/L 10/7/2019 0.13 1.0 -- ND ND ND 5.4 4.2 0.55 J ND ND ND 1.6 ND ND 0.73 J 2.4 ND 4.9 ND ND u /L 04/20/20 0.13 1.0 -- ND ND ND 4.0 3.8 ND ND ND ND 1.4 ND ND 0.72 J 0.88 J ND 3.6 ND ND 1,2-Dichloroethane ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 0.4 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01 /06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.46 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.65 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.65 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.65 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.65 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.65 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.65 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.47 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.47 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.21 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.21 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.21 -- 1 ND ND ND 0.40 J ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.21 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.21 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.21 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.21 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.21 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.21 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.21 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.21 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.21 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.21 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.21 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/7/2019 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/20/20 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ,,,> GOLDER 5of9 July 2020 TABLE 4 19131339.101 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Assessment Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constitent Detection Quantitation Reporting Units Date Well Limit Limit Limit Blanks MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 1,1-Dichloroethene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 7 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 7 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND 0.50 J ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND 0.52 J ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.20 -- 5 ND ND ND 0.47 J ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.24 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.24 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.24 -- 5 ND ND ND 0.60 J ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.15 -- 5 ND ND ND 0.45 J ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.24 -- 5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.24 -- 5 ND ND ND 0.49 J ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.60 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.60 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.21 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.21 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.21 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.21 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.21 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.21 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.21 -- 5 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.21 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.21 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.21 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.21 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.21 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.21 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.21 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/7/2019 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/20/20 0.21 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND cis- 1,2-Dichloroethene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 70 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 70 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND 44 ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND 6.0 ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND 5.2 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND 5.0 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND 7.9 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND 6.8 ND -- ND ND 1.1 J ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- 1.3 J ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.30 -- 5 ND ND ND 12 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.36 -- 5 ND ND 0.71 J 11 0.52 J -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.36 -- 5 ND ND 1.0 J 11 0.52 J -- ND ND 2.3 J ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.36 -- 5 ND ND 3.0 J 20 0.46 J -- ND ND 0.94 J ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.075 -- 5 ND ND 3.3 J 20 0.66 J -- ND ND 3.6 J ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.36 -- 5 -- ND 4.9 J 20 -- -- -- -- 0.71 J ND -- -- -- 20 ND 6.9 ND ND ug/L 10/11/10 0.36 -- 5 ND ND 4.2 J 23 0.88 J -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.72 -- 5 ND ND 0.88 J 21 1.7 J -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.72 -- 5 ND ND ND 21 ND -- ND ND ND ND ND ND ND 16 ND 1.2 J ND ND ug/L 04/17/12 0.15 -- 5 ND ND 2.1 J 17 0.66 J -- ND ND 0.79 J 0.58 J 0.15 ND -- 16 ND 12 ND ND ug/L 10/25/12 0.15 -- 5 ND ND 3.0 J 23 0.73 J -- ND ND 0.48 J 0.44 J ND ND ND 24 ND 12 ND ND ug/L 05/02/13 0.15 -- 5 ND ND 1.3 J 29 1.0 J -- 0.15 0.15 0.15 0.15 0.15 ND 0.15 23 ND 14 ND ND ug/L 09/24/13 0.15 -- 5 ND ND 2.6 J 26 0.68 J 0.87 J ND ND ND ND ND 0.78 J ND 26 ND ND ND ND ug/L 04/24/14 0.15 -- 5 ND ND 0.43 J 26 1.0 J -- ND ND ND ND ND ND ND ND ND 14 ND ND ug/L 10/06/14 0.15 -- 5 ND ND 1.1 J 21 0.74 J ND ND ND ND ND ND ND ND 17 ND ND ND ND ug/L 04/14/15 0.15 -- 5 ND ND ND 19 1.3 J 1.0 J ND ND ND ND ND -- ND ND ND 15 ND ND ug/L 10/07/15 0.15 -- 5 ND -- ND ND 0.85 J 0.60 J ND ND ND ND ND ND ND 13 ND 7.6 ND ND ug/L 04/20/16 0.15 -- 5 ND ND ND 21 1.1 J 0.82 J ND ND ND ND ND ND ND 0.83 J ND 12 ND ND ug/L 09/26/16 0.15 -- 5 0.15 -- ND 20 1.1 J 0.15 0.15 0.15 0.15 0.15 0.15 0.15 ND 8.0 ND 12 ND ND ug/L 04/25/17 0.15 -- 5 ND ND ND 21 1.3 J 1.1 J ND ND ND ND ND ND ND 7.3 ND 1.0 J ND ND ug/L 10/17/17 0.15 -- 5 ND -- ND 16 0.92 J 0.65 J ND ND ND ND ND ND ND 7.4 ND 11 ND ND ug/L 04/16/18 0.15 -- 5 ND ND ND 19 1.3 J 0.83 J ND ND ND ND ND ND ND 4.4 J ND 22 ND ND ug/L 10/16/18 0.15 1.0 -- ND -- ND 16 0.91 J 0.82 J ND ND ND ND ND ND ND 0.53 J ND 2.7 ND ND ug/L 04/12/19 0.15 1.0 -- ND ND ND 12 0.56 J ND ND ND ND ND ND ND ND 0.55 J ND 14 ND ND ug/L 10/7/2019 0.15 1.0 -- ND ND ND 13 0.69 J 0.62 J ND ND ND ND ND ND ND 2.9 ND 14 ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ND 9.3 0.62 J 0.56 J ND ND ND ND ND ND ND 0.91 J ND 10 ND ND Bromomethane ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- SWS GPS = 10 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- (No EPA MCL) ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- -- ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 2.1 J ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.49 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.49 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.49 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 10/16/09 0.49 -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.49 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- -- ug/L 08/02/10 0.49 -- 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.49 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.58 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.58 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.14 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.14 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.14 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.14 -- 10 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.14 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.14 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.14 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.14 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Chloromethane ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 3 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND 0.43 J 0.18 ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.23 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.34 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.34 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.34 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.05 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.34 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 0.40 J 0.44 J 0.34 ND ug/L 10/11/10 0.34 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND 0.61 J ND ND ug/L 05/09/11 0.55 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.55 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.13 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.13 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.13 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.13 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.13 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.13 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.13 -- 1 ND 0.74 J ND ND ND ND ND ND ND ND 0.56 J ND ND 0.49 J ND ND ND ND ug/L 10/17/17 0.13 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Methylene Chloride ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 5 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.24 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.53 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.53 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.53 -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.07 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.53 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.53 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.14 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.14 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.23 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.23 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.23 -- 1 ND ND ND ND 0.47 J -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.23 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.23 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.23 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.23 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND 0.46 B ND ND ND ND ND 0.52 J ug/L 10/07/19 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ,,,> GOLDER 6of9 July 2020 TABLE 4 19131339.101 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Assessment Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constitent Detection Quantitation Reporting Units Date Well Limit Limit Limit Blanks MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 2-Butanone ug/L 03/01/99 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 4000 ug/L ug/L 09/01/99 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 100 ND ND ND ND ND -- ND ND ND 680 ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 100 ND ND ND ND ND -- ND ND ND 130 ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND 38 J ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.44 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 1 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 1 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 1 -- 100 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 1 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 1 -- 100 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 1 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 1.3 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 1.3 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 1.3 -- 100 ND ND ND ND ND -- ND ND ND 17 J ND ND -- ND ND ND ND ND ug/L 10/25/12 1.3 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 1.3 -- 100 ND ND ND ND ND -- ND ND ND 11 J ND ND ND ND ND ND ND ND ug/L 09/24/13 1.3 -- 100 ND ND ND ND ND 31 J ND ND ND 4.3 J ND ND ND ND ND ND ND ND ug/L 04/24/14 1.3 -- 100 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 1.3 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 1.3 -- 100 ND 1.3 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.3 ND ug/L 09/26/16 1.3 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 1.3 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 1.3 5.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/7/2019 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/20/20 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Tetrachloroethene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND 12 ND ND ND -- ND -- -- -- ND NC 2L = 0.7 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND 12 ND ND -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND 9 ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND 12 ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND 9.6 ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND 20 ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND 7 ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND 8.7 ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND 6.7 ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND 5.2 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- ND ND ND 5. ND -- ND ND 3.6 1.8 ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND 3.2 ND -- ND -- 1.6 0.49 J ND -- -- -- -- -- -- ND ug/L 04/29/08 0.36 -- 1 ND ND ND 3.5 ND -- ND ND 0.69 J 0.40 J ND ND -- -- -- -- -- ND ug/L 12/01/08 0.36 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.36 -- 1 ND ND ND 3.2 ND -- ND ND 0.99 J 0.63 J ND ND -- -- -- -- -- ND ug/L 10/16/09 0.36 -- 1 ND ND ND 5. ND -- N D N D 0.83 J 0.51 J N D -- -- -- -- -- -- N D ug/L 04/28/10 0.099 -- 1 ND ND ND 4.2 ND -- ND ND 0.56 J 0.57 J ND ND -- -- -- -- -- ND ug/L 08/02/10 0.36 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.36 -- 1 ND ND 0.36 ND ND -- ND ND ND 0.57 J ND ND -- -- ND ND ND ND ug/L 05/09/11 0.73 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.73 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.17 -- 1 ND ND ND ND ND -- ND ND ND 0.41 J ND ND -- ND ND ND ND ND ug/L 10/25/12 0.17 -- 1 ND ND ND 2.7 ND -- ND ND 0.52 J 0.52 J ND ND ND ND ND ND ND ND ug/L 05/02/13 0.17 -- 1 ND ND ND 2.4 ND -- ND ND ND 0.48 J ND ND ND ND ND ND ND ND ug/L 09/24/13 0.17 -- 1 ND ND ND 2.1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.17 -- 1 ND ND ND ND ND -- ND ND ND 0.51 J ND ND ND ND ND 0.44 J ND ND ug/L 10/06/14 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.17 -- 1 ND ND ND 0.85 J ND ND ND ND 0.40 J ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.17 -- 1 ND ND ND 1.4 ND ND ND ND ND 0.44 J ND ND ND ND ND ND ND ND ug/L 09/26/16 0.17 -- 1 ND -- ND 0.69 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.17 -- 1 ND ND ND 1.0 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.17 -- 1 ND -- ND 0.61 J ND ND ND ND ND 0.40 J ND ND ND ND ND ND ND ND ug/L 04/16/18 0.17 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.17 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.17 1.0 -- ND ND ND 0.42 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.17 1.0 -- ND ND ND ND ND ND ND ND ND 0.31 J ND ND ND ND ND ND ND ND ug/L 04/20/20 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Trichloroethene ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 3 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND 20 ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.25 -- 1 ND ND ND 3.6 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.38 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.38 -- 1 ND ND ND 3.0 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.38 -- 1 ND ND 0.91 J .7 ND -- ND ND 0.48 J ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.13 -- 1 ND ND 0.53 J 4.1 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.38 -- 1 -- ND 0.62 J 4.1 -- -- -- -- ND ND -- -- -- ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 ND ND 0.48 J 3.6 ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.72 -- 1 ND ND ND 3.3 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.72 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.15 -- 1 ND ND ND 2.5 ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.15 -- 1 ND ND ND 2.9 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.15 -- 1 ND ND ND 3.2 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.15 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.40 J ND ND ug/L 04/24/14 0.15 -- 1 ND ND ND 2.5 ND -- ND ND ND ND ND ND ND ND ND 0.60 J ND ND ug/L 10/06/14 0.15 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.15 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.15 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.15 -- 1 ND ND ND 2.0 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.15 -- 1 ND -- ND 1.4 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.15 -- 1 ND ND ND 2.6 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.15 -- 1 ND -- ND 1.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.15 -- 1 ND ND ND 1.4 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.15 1.0 -- ND -- ND 0.91 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.15 1.0 -- ND ND ND 1.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.15 1.0 -- ND ND ND 0.75 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/20/20 0.15 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Trichlorofluoromethane ug/L 03/01/99 -- -- 5 ND ND 38 34 ND -- ND 28 ND ND ND ND -- ND -- -- -- ND NC 2L = 2000 ug/L ug/L 09/01/99 -- -- 5 ND ND ND 30 ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) ug/L 03/01/00 -- -- 5 ND ND ND 14 ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND 20 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND 14 ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND 23 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND 17 ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND 5.2 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND 14 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND 5.6 ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND 21 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND 7.0 ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND 10 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND 13 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.28 -- 1 ND ND ND 4.2 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.28 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.28 -- 1 ND ND ND 2.5 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.28 -- 1 ND ND ND 4.1 ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.15 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.28 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND ND ND ND ug/L 10/11/10 0.28 -- 1 ND ND ND 2.3 ND -- ND ND ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 0.66 -- 1 ND ND ND 1.2 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.66 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.24 -- 1 ND ND ND 0.84 J ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.24 -- 1 ND ND ND 0.88 J ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.24 -- 1 ND ND ND 0.73 J ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.24 -- 1 ND ND ND 0.48 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.24 -- 1 ND ND ND 0.55 J ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.24 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.24 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.24 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.24 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.24 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.24 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.24 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.24 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.24 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.24 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.24 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/20/20 0.24 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Vinyl Chloride ug/L 03/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 0.03 ug/L ug/L 09/01/99 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 2 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND ND -- 12 -- -- -- ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- ND ND .7 ND -- N D -- 0.44 J N D N D -- -- -- -- -- -- N D ug/L 04/29/08 0.3 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.3 -- 1 ND ND 0.73 J 3.9 0.44 J -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 02/13/09 0.3 -- 1 -- -- -- -- 0.47 J -- -- -- -- -- -- -- -- -- -- -- -- ND ug/L 04/17/09 0.3 -- 1 ND ND ND ND ND -- ND ND 0.45 J ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.3 -- 1 ND ND 5. ND -- ND ND 0.47 J ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.083 -- 1 ND ND 0.90 J 4.8 ND -- ND ND 0.80 J ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.3 -- 1 -- ND 1.5 4.8 -- -- -- -- ND ND -- -- -- 2.6 ND 0.49 J ND ND ug/L 10/11/10 0.3 -- 1 ND ND 1.4 5.4 0.44 J -- ND ND ND ND ND ND -- -- ND 0.68 J ND ND ug/L 05/09/11 0.6 -- 1 ND ND ND 5.1 ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 0.6 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND ND 0.69 ND ND ND ND ug/L 04/17/12 0.32 -- 1 ND ND 0.52 J 2.1 ND -- ND ND ND ND ND ND -- 1.0 ND ND ND ND ug/L 10/25/12 0.32 -- 1 ND ND 1.3 ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.32 -- 1 ND ND ND 5.6 0.54 J -- ND ND ND ND ND ND ND 0.79 ND ND ND ND ug/L 09/24/13 0.32 -- 1 ND ND 0.43 J 3.6 ND ND ND ND ND ND ND ND ND 4.0 ND 1.3 ND ND ug/L 04/24/14 0.32 -- 1 ND ND ND 4.6 0.52 J -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.32 -- 1 ND ND ND 2.6 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.32 -- 1 ND ND ND 2.5 0.44 J ND ND ND ND ND ND -- ND ND 0.71 1.6 0.71 ND ug/L 10/07/15 0.32 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND 0.72 J ND ND ug/L 04/20/16 0.32 -- 1 ND ND ND 4.2 ND ND ND ND ND ND ND ND ND ND ND 1.6 ND ND ug/L 09/26/16 0.32 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND 1.4 ND 1.5 ND ND ug/L 04/25/17 0.32 -- 1 ND ND ND 3.1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.32 -- 1 ND -- ND 2.5 ND ND ND ND ND ND ND ND ND 1.5 ND 1.7 ND ND ug/L 04/16/18 0.32 -- 1 ND ND ND 3.2 ND ND ND ND ND ND ND ND ND ND ND 3.0 ND ND ug/L 10/16/18 0.32 1.0 -- ND -- ND 2.4 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.32 1.0 -- ND ND ND 1.4 ND ND ND ND ND ND ND ND ND ND ND 1.1 ND ND ug/L 10/07/19 0.32 1.0 -- ND ND ND 2.2 ND ND ND ND ND ND ND ND ND ND ND 1.6 ND ND ug/L 04/20/20 0.32 1.0 -- ND ND ND 1.3 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ,,,> GOLDER 7of9 July 2020 TABLE 4 19131339.101 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Assessment Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constitent Detection Quantitation Reporting Units Date Well Limit Limit Limit Blanks MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Xylenes (Total) ug/L 03/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND NC 2L = 500 ug/L ug/L 09/01/99 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND EPA MCL = 10000 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/15/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND -- -- -- ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/01/06 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/12/07 -- -- -- ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 09/26/07 -- -- -- ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND ug/L 04/29/08 0.67 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 12/01/08 0.4 -- 5 ND ND ND ND ND -- ND 3.1 J ND ND ND ND -- -- -- -- -- ND ug/L 04/17/09 0.4 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/16/09 0.4 -- 5 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND ug/L 04/28/10 0.22 -- 5 ND ND ND ND ND -- ND 1.8 J ND ND ND ND -- -- -- -- -- ND ug/L 08/02/10 0.4 -- 5 -- ND ND ND -- -- -- -- ND ND -- -- -- ND ND ND ND ND ug/L 10/11/10 0.4 -- 5 ND ND ND ND ND -- ND 4.0 J ND ND ND ND -- -- ND ND ND ND ug/L 05/09/11 2.1 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND ug/L 10/12/11 2.1 -- 5 ND ND ND ND ND -- ND 5.5 ND ND ND ND ND ND ND ND ND ND ug/L 04/17/12 0.45 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND -- ND ND ND ND ND ug/L 10/25/12 0.45 -- 5 ND ND ND ND ND -- ND 2.6 J ND ND ND ND ND ND ND ND ND ND ug/L 05/02/13 0.45 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/13 0.45 -- 5 ND ND ND ND ND ND ND 1.8 J ND ND ND ND ND ND ND ND ND ND ug/L 04/24/14 0.45 -- 5 ND ND ND ND ND -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/06/14 0.45 -- 5 ND ND ND ND ND ND ND 1.9 J ND ND ND ND ND ND ND ND ND ND ug/L 04/14/15 0.45 -- 5 ND ND ND ND ND ND ND ND ND ND ND -- ND ND ND ND ND ND ug/L 10/07/15 0.45 -- 5 ND -- ND ND ND ND ND 0.77 J ND ND ND ND ND ND ND ND ND ND ug/L 04/20/16 0.45 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/26/16 0.45 -- 5 ND -- ND ND ND ND ND 1.4 J ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.45 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/17/17 0.45 -- 5 ND -- ND ND ND ND ND 5.3 ND ND ND ND ND ND ND ND ND ND ug/L 04/16/18 0.45 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.45 3.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.45 3.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/19 0.45 3.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/20/20 0.45 3.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,4-Dioxane ug/L 10/16/18 1.2 2.0 -- ND -- 220 2.8 ND 100 4.6 85 1.5 J ND 350 4.1 1.3 J ND ND ND 4.4 ND NC 2L = 3 ug/L (verification event) ug/L 02/20/19 1.2 2.0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 8.4 ND ug/L 04/12/19 1.2 2.0 -- ND ND 120 2.6 ND 83 2.4 6.3 1.6 J ND 290 ND 3.9 ND 4.9 2.2 12 ND ug/L 10/07/19 1.2 2.0 -- ND ND 210 3.1 ND 79 9.7 120 11 1.4 J 300 24 5.0 2.3 6.1 2.7 19 ND ug/L 04/20/20 0.80 2.0 -- ND ND 170 2.5 1.0 J 69 3.2 33 5.8 1.1 J 310 4.0 3.5 1.0 J 0.93 J 2.4 28 ND Tet ra h yd rofu ra n ug/L 10/12/11 0.8 -- -- ND ND 11 ND ND -- ND 34 ND ND 0.82 J ND -- -- -- -- -- ND (No NC 2L) ug/L 04/17/12 0.8 -- -- ND ND 4.4 ND ND -- ND 4 ND ND ND ND -- -- -- -- -- ND (No EPA MCL) ug/L 10/25/12 0.8 -- -- ND ND ND ND ND -- ND ND ND ND ND ND -- ND ug/L 05/02/13 0.8 -- -- ND ND 5.5 ND ND -- ND ND ND 150 6.6 ND -- -- -- -- -- ND ug/L 09/24/13 0.8 -- -- ND ND 6.5 ND ND 10 ND 18 ND 18 6.4 ND -- -- -- -- -- ND ug/L 04/24/14 0.8 -- -- ND ND 4.9 ND ND -- ND ND ND 140 13 ND -- -- -- -- -- ND ug/L 10/06/14 0.8 -- -- ND ND ND ND ND 11 ND 29 ND ND 9.4 ND ND -- -- -- -- ND ug/L 04/14/15 0.8 -- -- ND ND 8.2 ND ND 5.3 ND 1.0 ND 5.6 4.4 -- ND -- -- -- -- ND ug/L 10/07/15 0.8 -- -- ND -- 21 ND ND 7.2 ND 32 ND ND 9.8 -- ND ND ND ND ND ND ug/L 04/20/16 0.8 -- -- ND ND 7.1 ND ND 1.4 ND ND ND 50 7.0 ND ND ND ND ND ND ND ug/L 09/26/16 0.8 -- -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/25/17 0.8 -- -- ND ND 5.3 ND ND 6.7 ND ND ND 140 13 ND ND ND ND ND ND ND ug/L 10/17/17 0.53 -- -- ND -- 16 ND ND 4.2 ND 54 ND 20 12 ND ND ND ND ND ND ND ug/L 10/16/18 0.53 1.0 -- ND -- 5.1 ND ND ND ND 2.3 ND ND 9.7 ND -- -- -- -- -- ND ug/L 04/12/19 0.53 1.0 -- ND ND 4.9 ND ND ND ND ND ND ND 11 ND -- -- -- -- -- ND ug/L 10/07/19 0.53 1.0 -- ND ND 15 ND ND 4.9 4.3 9.1 ND ND 16 ND ND ND ND ND ND ND u /L 04/20/20 0.53 1.0 -- ND ND ND ND ND ND ND ND ND ND 16 ND -- -- -- -- -- ND Sulfide (total) mg/L 09/01/99 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No NC 2L) mg/L 09/01/00 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND (No EPA MCL) mg/L 09/01/01 -- -- 1 ND ND ND 1 ND -- ND ND ND ND ND -- -- -- -- -- -- ND mg/L 09/01/02 -- -- 1 ND ND ND 5 ND -- ND ND ND ND ND -- -- -- -- -- -- ND mg/L 10/01/03 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND mg/L 09/01/04 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND mg/L 10/01/05 -- -- 1 ND ND ND ND ND -- ND 2 ND ND ND -- -- -- -- -- -- ND mg/L 10/01/06 -- -- 1 ND ND ND ND ND -- ND ND ND ND ND -- -- -- -- -- -- ND mg/L 09/26/07 -- -- 1 ND ND ND ND ND -- ND -- ND ND ND -- -- -- -- -- -- ND mg/L 05/05/08 0.10 -- 1 -- -- ND ND ND -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 12/01/08 0.10 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND mg/L 10/16/09 0.031 -- 1 ND ND ND ND ND -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 04/29/10 0.031 -- 1 -- ND ND ND ND -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 08/02/10 0.031 -- 1 -- ND ND ND ND -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 10/11/10 0.01 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- ND ND ND ND mg/L 10/12/11 0.01 -- 1 ND ND ND ND ND -- ND 0.012 J ND ND ND 0.013 J -- -- -- -- -- ND mg/L 10/25/12 0.01 -- 1 ND ND ND ND ND -- ND ND ND ND ND ND -- -- -- -- -- ND mg/L 10/25/12 0.01 -- 1 -- ND ND -- ND -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 05/02/13 0.01 -- 1 -- ND ND -- ND -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/24/13 0.01 -- 1 ND ND ND ND ND ND 0.088 J ND ND ND ND ND -- -- -- -- -- ND mg/L 09/24/13 0.01 -- 1 -- ND ND -- ND -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/14 0.01 -- 1 -- ND ND -- ND -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/02/14 0.01 -- 1 -- ND ND -- ND -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/06/14 0.01 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.04 J ND ND ND mg/L 04/14/15 0.01 -- 1 -- ND ND -- ND -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/15 0.01 -- 1 ND -- ND 0.059 J ND ND ND 0.059 J ND ND ND ND ND mg/L 04/18/16 0.01 -- 1 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/26/16 0.01 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ND ND 0.36 J ND ND ND mg/L 04/25/17 0.01 -- 1 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/17/17 0.01 -- 1 ND -- ND ND ND ND ND ND ND ND ND 0.042 J ND ND 0.6 J ND ND ND mg/L 04/16/18 0.01 -- 1 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/16/18 0.01 0.1 -- ND -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND mg/L 04/12/19 0.01 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/19 0.01 0.1 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND mg/L 04/20/20 0.01 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- Chloride mg/L 05/05/08 2.4 -- -- -- -- 450 B 12 -- -- -- -- 4.3 J 4.8 J -- -- -- 6.0 -- -- -- -- NC 2L = 250 mg/L mg/L 10/16/09 0.18 -- -- -- 3.3 J 410 11 -- -- -- -- 58 4.7 J -- -- -- 10 -- -- -- ND EPA MCL = 250 mg/L mg/L 04/29/10 0.18 -- -- -- 3.9 J 390 12 -- -- -- -- ND 4.8 J -- -- -- 12 -- -- -- ND mg/L 08/02/10 180 -- -- -- 3.7 J 410 12 -- -- -- -- 16 4.8 J -- -- -- 11 -- -- -- ND mg/L 10/25/12 4.3 -- -- -- 2.6 B 570 B -- -- -- -- -- -- -- -- -- -- 12 B -- 6.1 B -- -- mg/L 05/02/13 4.3 -- -- -- 2.7 B 340 B -- -- -- -- -- -- -- -- -- -- 13 B -- 6.9 B -- -- mg/L 09/24/13 22 -- -- -- 2.6 J 5 -- -- -- -- -- -- -- -- -- -- 14 -- 7.8 -- ND mg/L 04/25/14 22 -- -- -- 2.8 J 440 -- -- -- -- -- -- -- -- -- -- 7.7 -- 7.3 -- ND mg/L 10/02/14 22 -- -- -- 3.1 J 560 -- -- -- -- -- -- -- -- -- -- 14 -- 9.0 -- ND mg/L 04/14/15 22 -- -- -- 3.1 J -- -- -- -- -- -- -- -- -- -- 16 -- 11 -- ND mg/L 10/07/15 22 -- -- -- -- 570 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg 04/18/16 22-- -- -- 2.3 J -- -- -- -- -- -- 14 -- 10 -- ND mg/L 09/26/16 2.2 -- -- -- -- 510 14 -- 13 -- ND mg/L 04/25/17 2.9 -- -- -- 1.5 J 630 -- -- -- -- -- -- -- -- -- -- 16 -- 7.8 -- ND mg/L 10/17/17 2.2 -- -- -- -- 510 -- -- -- -- -- -- -- -- -- -- 17 -- 19 -- ND mg/L 04/16/18 2.2 -- -- -- ND 760 -- -- -- -- -- -- -- -- -- -- 18 -- 16 -- ND mg/L 10/16/18 2.2 5 -- -- -- 550 -- -- -- -- -- -- -- -- -- -- 6.3 -- 9.3 -- ND mg/L 04/12/19 2.2 5 -- -- 3.1 J 380 -- -- -- -- -- -- -- -- -- -- 23 -- 21 -- ND mg/L 10/07/19 2.2 5 -- -- 2.4 J 390 -- -- -- -- -- -- -- -- -- -- 28 -- 17 -- ND mg/L 04/20/20 2.2 5 -- -- 4.0 J 570 -- -- -- -- -- -- -- -- -- -- 34 J -- 36 -- -- Nitrate as N mg/L 05/05/08 0.01 -- 10 -- -- ND ND -- -- -- -- 2.2 J ND -- -- -- 0.39 J -- -- -- ND NC 2L = 10 mg/L mg/L 10/16/09 0.0056 -- 10 -- 0.017 J 0.028 J ND -- -- -- -- 0.33 J 0.28 J -- -- -- 0.077 J -- -- -- ND EPA MCL = 10 mg/L mg/L 04/29/10 0.021 -- 10 -- ND ND ND -- -- -- -- ND 0.23 J -- -- -- 0.12 J -- -- -- ND mg/L 08/02/10 0.025 -- 10 -- ND 0.062 J 0.029 J -- -- -- -- 0.13 J 0.14 J -- -- -- 0.13 J -- -- -- ND mg/L 10/25/12 0.025 -- 10 -- ND 0.036 J -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 05/02/13 0.025 -- 10 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/24/13 0.025 -- 10 -- 0.17 J 0.046 J -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/14 0.025 -- 10 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/02/14 0.025 -- 10 -- ND 0.054 J -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/14/15 0.025 -- 10 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- 0.042 J -- ND mg/L 10/07/15 0.025 -- 10 -- -- 0.22 J -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg/L 04/18/16 0.025 -- 10 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/26/16 0.025 -- 10 -- -- ND -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/17 0.025 -- 10 -- ND 0.046 J -- -- -- -- -- -- -- -- -- -- 0.16 J -- 1.4 J -- ND mg/L 10/17/17 0.025 -- 10 -- -- 0.071 J -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/16/18 0.025 -- 10 -- ND 0.052 J -- -- -- -- -- -- -- -- -- -- 0.046 J -- ND -- ND mg/L 10/16/18 0.025 0.1 -- -- -- 0.052 J -- -- -- -- -- -- -- -- -- -- 0.2 -- 2.4 -- ND mg/L 04/12/19 0.041 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- 0.042 mg/L 10/07/19 0.025 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/20/20 0.041 0.1 -- -- ND 0.052 J -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- Nitrite as N mg/L 05/05/08 0.01 -- 1 -- -- 0.015 B 0.013 B -- -- -- -- ND 0.2 B -- -- -- 0.018 B -- -- -- ND mg/L 09/24/13 0.0043 -- 1 -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/17 0.017 -- 1 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/17/17 0.017 -- 1 -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/16/18 0.017 -- 1 -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/16/18 0.017 0.1 -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/19 0.017 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/20/20 0.017 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- Sulfate as SO4 mg/L 05/05/08 0.25 -- 250 -- -- 25 J 25 J -- -- -- -- 4.7 J -- -- -- -- 40 J -- -- -- ND NC 2L = 250 mg/L mg/L 10/16/09 0.078 -- 250 -- 2.0 J 12 J 27 J -- -- -- -- 23 J 100 J -- -- -- 16 J -- -- -- ND EPA MCL = 250 mg/L mg/L 04/29/10 0.12 -- 250 -- 0.12 14 J 19 J -- -- -- -- 14 J 100 J -- -- -- 27 J -- -- -- ND mg/L 08/02/10 0.12 -- 250 -- 1.5 J 12 J 21 J -- -- -- -- 12 J 100 -- -- -- 15 J -- -- -- ND mg/L 10/25/12 0.04 -- 250 -- 2.0 J 11 J -- -- -- -- -- -- -- -- -- -- 12 J -- 22 J -- ND mg/L 05/02/13 0.04 -- 250 -- 1.8 B 19 B -- -- -- -- -- -- -- -- -- -- 11 B -- 21 B -- ND mg/L 09/24/13 0.04 -- 250 -- 1.7 J 14 J -- -- -- -- -- -- -- -- -- -- 8.9 J -- 21 J -- ND mg/L 04/25/14 2.9 -- 250 -- ND 20 J -- -- -- -- -- -- -- -- -- -- 35 J -- 18 J -- ND mg/L 10/02/14 2.9 -- 250 -- 2.9 14 J -- -- -- -- -- -- -- -- -- -- 12 J -- 22 J -- ND mg/L 04/14/15 2.9 -- 250 -- 2.9 22 J -- -- -- -- -- -- -- -- -- -- 12 J -- 26 J -- ND mg/L 10/07/15 2.9 -- 250 -- -- 15 J -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg/L 04/18/16 2.9 -- 250 -- 2.9 16 J -- -- -- -- -- -- -- -- -- -- 36 J -- 26 J -- ND mg/L 09/26/16 2.9 -- 250 -- -- 11 J -- -- -- -- -- -- -- -- -- -- 13 -- 27 J -- ND mg/L 04/25/17 5.8 -- 250 -- 0.25 J 31 J -- -- -- -- -- -- -- -- -- -- 20 J -- 23 J -- ND mg/L 10/17/17 2.9 -- 250 -- -- 8.9 J -- -- -- -- -- -- -- -- -- -- 14 J -- 24 J -- ND mg/L 04/16/18 2.9 -- 250 -- ND ND -- -- -- -- -- -- -- -- -- -- 18 J -- 23 J -- ND mg/L 10/16/18 2.9 5 -- -- -- ND -- -- -- -- -- -- -- -- -- -- 19 -- 19 -- ND mg/L 04/12/19 2.9 5 -- -- ND 16 -- -- -- -- -- -- -- -- -- -- 59 -- 27 -- ND mg/L 10/07/19 2.9 5 -- -- ND 5.3 -- -- -- -- -- -- -- -- -- -- 18 -- 25 -- ND mg/L 04/20/20 2.9 5 -- -- 3.0 J ND -- -- -- -- -- -- -- -- -- -- 49 J -- 36 J -- -- Total Alkalinity as CaCO3 mg/L 10/16/09 42 -- -- -- 19 320 370 -- -- -- -- 59 99 -- -- -- 190 -- -- -- ND (No NC 2L) mg/L 04/29/10 32 -- -- -- 16 350 330 -- -- -- -- 70 110 -- -- -- 110 -- -- -- ND (No EPA MCL) mg/L 08/02/10 40 -- -- -- 20 580 460 -- -- -- -- 51 100 -- -- -- 320 -- -- -- ND mg/L 10/25/12 60 -- -- -- 24 740 -- -- -- -- -- -- -- -- -- -- 360 -- 230 -- ND mg/L 05/02/13 70 -- -- -- 17 570 -- -- -- -- -- -- -- -- -- -- 42 -- 240 -- ND mg/L 09/24/13 70 -- -- -- 26 780 -- -- -- -- -- -- -- -- -- -- 450 -- 260 -- ND mg/L 04/25/14 70 -- -- -- 19 600 -- -- -- -- -- -- -- -- -- -- 19 -- 220 -- ND mg/L 10/02/14 70 -- -- -- 24 830 -- -- -- -- -- -- -- -- -- -- 420 -- 310 -- ND mg/L 04/14/15 140 -- -- -- 21 690 -- -- -- -- -- -- -- -- -- -- 380 -- 330 -- ND mg/L 10/07/15 84 -- -- -- -- 1000 -- -- -- -- -- -- -- -- -- -- 490 -- 190 -- ND mg/L 04/18/16 140 -- -- -- 15 840 -- -- -- -- -- -- -- -- -- -- 100 -- 320 -- ND mg/L 09/26/16 70 -- -- -- -- 960 -- -- -- -- -- -- -- -- -- -- 410 -- 360 -- ND mg/L 04/25/17 14 -- -- -- 28 880 -- -- -- -- -- -- -- -- -- -- 400 -- 81 -- ND mg/L 10/17/17 70 -- -- -- -- 1100 -- -- -- -- -- -- -- -- -- -- 410 -- 370 -- ND mg/L 04/16/18 14 -- -- -- 19 810 -- -- -- -- -- -- -- -- -- -- 310 -- 400 -- ND mg/L 10/16/18 14 15 -- -- -- 1000 -- -- -- -- -- -- -- -- -- -- 77 -- 120 -- ND mg/L 04/12/19 14 15 -- -- ND 900 -- -- -- -- -- -- -- -- -- -- 81 -- 370 -- ND mg/L 10/07/19 14 15 -- -- ND 950 -- -- -- -- -- -- -- -- -- -- 340 -- 470 -- ND mg/L 04/20/20 14 15 -- -- ND 1700 -- -- -- -- -- -- -- -- -- -- 110 -- 380 -- -- Total Organic Carbon mg/L 05/05/08 0.32 -- -- -- -- 15 2.2 -- -- -- -- 1.3 ND -- -- -- 9.2 -- -- -- ND (No NC 2L) mg/L 10/16/09 0.32 -- -- -- ND 30 0.88 J -- -- -- -- 7.3 2.5 -- -- -- 2.5 -- -- -- ND (No EPA MCL) mg/L 10/16/09 0.32 -- -- -- ND 30 0.88 J -- -- -- -- 7.3 2.5 -- -- -- 2.5 -- -- -- ND mg/L 04/29/10 0.32 -- -- -- ND 23 2.0 -- -- -- -- 3.5 2.3 -- -- -- 4.5 -- -- -- ND mg/L 08/02/10 0.32 -- -- -- 0.40 J 34 1.3 -- -- -- -- 2.8 2.3 -- -- -- 3.0 -- -- -- ND mg/L 10/25/12 0.32 -- -- -- 0.55 J 45 -- -- -- -- -- -- -- -- -- -- 1.7 -- 1.2 -- ND mg/L 05/02/13 0.32 -- -- -- 0.32 19 -- -- -- -- -- -- -- -- -- -- 0.93 J -- 0.84 J -- ND mg/L 09/24/13 0.32 -- -- -- 0.32 48 -- -- -- -- -- -- -- -- -- -- 1.9 -- 1.6 -- ND mg/L 04/25/14 0.32 -- -- -- ND 36 -- -- -- -- -- -- -- -- -- -- 6.8 -- 0.56 J -- ND mg/L 10/02/14 0.32 -- -- -- 0.51 J 48 -- -- -- -- -- -- -- -- -- -- 4.9 -- 1.5 -- ND mg/L 04/14/15 0.34 -- -- -- 0.34 33 -- -- -- -- -- -- -- -- -- -- 1.4 -- 2.0 -- ND mg/L 10/07/15 0.34 -- -- ND -- 46 -- -- -- -- -- -- -- -- ND -- -- ND 190 ND ND mg/L 04/18/16 0.34 -- -- -- 0.48 J 37 -- -- -- -- -- -- -- -- -- -- 5.7 -- 1.6 -- ND mg/L 09/26/16 0.34 -- -- -- -- 58 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/17 0.34 -- -- -- ND 28 -- -- -- -- -- -- -- -- -- -- 4.3 -- 2.4 -- ND mg/L 10/17/17 0.34 -- -- -- -- 69 -- -- -- -- -- -- -- -- -- -- 2.6 -- 3.3 -- ND mg/L 04/16/18 0.34 -- -- -- 0.51 J 37 -- -- -- -- -- -- -- -- -- -- 2.2 -- 3.0 -- ND mg/L 10/16/18 0.34 1 -- -- -- 56 -- -- -- -- -- -- -- -- -- -- 5.2 -- 1.0 -- ND mg/L 04/12/19 0.34 1 -- -- 1.4 39 -- -- -- -- -- -- -- -- -- -- 3.8 -- 7.0 -- ND mg/L 10/07/19 0.34 1 -- -- ND 46 -- -- -- -- -- -- -- -- -- -- 2.4 -- 2.2 -- ND mg/L 04/20/20 0.34 1 -- -- ND 45 -- -- -- -- -- -- -- -- -- -- 2.8 -- 3.3 -- -- Pyruvic Acid mg/L 10/16/09 0.02 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 04/29/10 0.14 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 08/02/10 0.14 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 10/25/12 0.01 -- -- -- 0.012 J 0.02 J -- -- -- -- -- -- -- -- -- -- ND -- 0.014 J -- ND mg/L 05/02/13 0.01 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/24/13 0.01 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/14 0.01 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/02/14 0.01 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/14/15 0.01 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/15 0.012 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg/L 04/18/16 0.012 -- -- -- 0.018 J ND -- -- -- -- -- -- -- -- -- -- ND -- 0.015 J -- ND mg/L 09/26/16 0.012 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/17 0.012 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/17/17 0.012 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/16/18 0.012 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/16/18 0.012 0.07 -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/12/19 0.021 0.07 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/19 0.021 0.07 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/20/20 0.021 0.07 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- ,,,> GOLDER 8of9 July 2020 TABLE 4 19131339.101 Smmary of Grondwater Monitoring Resits Detected Constitents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Assessment Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Sentinel Monitoring Wells Detected Monitoring Constitent Detection Quantitation Reporting Units Date Well Limit Limit Limit Blanks MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7113 II-8 II-12 II-3113 II-9 SMW-1 SMW-3 SMW-4 Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) mg/L 10/16/09 0.088 -- -- -- ND ND 0.17 J -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 04/29/10 0.44 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 08/02/10 0.44 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 10/25/12 0.095 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 05/02/13 0.095 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/24/13 0.095 -- -- -- 0.14 ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/14 0.095 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/02/14 0.095 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/14/15 0.095 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/15 0.095 -- -- -- -- 4.7 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg/L 04/18/16 0.095 -- -- -- ND 7.5 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/26/16 0.095 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/17 0.095 -- -- -- ND 2.8 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 10/17/17 0.095 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/16/18 0.095 -- -- -- ND 4.5 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/16/18 0.095 0.14 -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 04/12/19 0.13 0.14 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/19 0.13 0.14 -- -- ND 5.0 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m /L 04/20/20 0.13 0.14 -- -- ND 3.7 -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- Acetic Acid mg/L 10/16/09 0.071 -- -- -- 0.58 25 ND -- -- -- -- 0.64 0.53 -- -- -- 0.39 J -- -- -- ND mg/L 04/29/10 0.083 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 08/02/10 0.083 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 10/25/12 0.031 -- -- -- 0.53 ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 05/02/13 0.031 -- -- -- ND 28 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 09/24/13 0.031 -- -- -- 0.14 ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/14 0.031 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/02/14 0.031 -- -- -- ND 65 -- -- -- -- -- -- -- -- -- -- 0.088 -- ND -- ND mg/L 04/14/15 0.031 -- -- -- 0.16 J ND -- -- -- -- -- -- -- -- -- -- ND -- 0.25 -- ND m g/L 10/07/15 0.16 -- -- -- -- 31 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND m g/L 04/18/16 0.16 -- -- -- ND 31 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/26/16 0.16 -- -- -- -- 54 -- -- -- -- -- -- -- -- -- -- ND -- 0.16 -- ND mg/L 04/25/17 0.16 -- -- -- 0.68 15 -- -- -- -- -- -- -- -- -- -- 1.4 -- 1.3 -- ND m g/L 10/17/17 0.16 -- -- -- -- 45 -- -- -- -- -- -- -- -- -- -- ND -- 0.18 J -- ND m g/L 04/16/18 0.16 -- -- -- ND 16 -- -- -- -- -- -- -- -- -- -- ND -- 0.19 J -- ND m g/L 10/16/18 0.16 0.2 -- -- -- 20 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 04/12/19 0.18 0.2 -- -- ND 16 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/19 0.18 0.2 -- -- ND 27 -- -- -- -- -- -- -- -- -- -- ND -- 0.28 -- ND m /L 04/20/20 0.18 0.2 -- -- ND 24 -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- Propionic Acid mg/L 10/16/09 0.054 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 04/29/10 0.18 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 08/02/10 0.18 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 10/25/12 0.063 -- -- -- ND 50 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 05/02/13 0.063 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/24/13 0.063 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/14 0.063 -- -- -- ND 22 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/02/14 0.063 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/14/15 0.063 -- -- -- ND 21 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/15 0.065 -- -- -- -- 29 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg/L 04/18/16 0.065 -- -- -- 0.47 24 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/26/16 0.065 -- -- -- -- 44 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/17 0.065 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- 0.14 -- ND -- ND mg/L 10/17/17 0.065 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/16/18 0.065 -- -- -- ND 11 -- -- -- -- -- -- -- -- -- -- ND -- 0.13 -- ND mg/L 10/16/18 0.065 0.1 -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/12/19 0.065 0.1 -- -- 0.57 ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/19 0.065 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/20/20 0.065 0.1 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- Hexanoic Acid mg/L 10/16/09 0.32 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 04/29/10 0.23 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 08/02/10 0.23 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 10/25/12 0.078 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 05/02/13 0.078 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/24/13 0.078 -- -- -- ND 2.4 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/14 0.078 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/02/14 0.078 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/14/15 0.078 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 10/07/15 0.26 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND m g/L 04/18/16 0.26 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/26/16 0.26 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 04/25/17 0.26 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 10/17/17 0.26 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 04/16/18 0.26 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND ug/L 10/16/18 0.26 0.5 -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND ug/L 04/12/19 0.26 0.5 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND ug/L 10/07/19 0.26 0.5 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND u /L 04/20/20 0.26 0.5 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- iso-Hexanoic Acid mg/L 10/16/09 0.41 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 04/29/10 0.21 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- 0.95 J -- -- -- ND mg/L 08/02/10 0.21 -- -- -- ND 2.6 ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 10/25/12 0.08 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 05/02/13 0.08 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/24/13 0.08 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/14 0.08 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/02/14 0.08 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/14/15 0.08 -- -- -- 0.36 J ND -- -- -- -- -- -- -- -- -- -- 0.61 -- 0.36 J -- ND mg/L 10/07/15 0.44 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg/L 04/18/16 0.44 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/26/16 0.44 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 04/25/17 0.44 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 10/17/17 0.44 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 04/16/18 0.44 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND u g/L 10/16/18 0.44 0.5 -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND ug/L 04/12/19 0.44 0.5 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND ug/L 10/07/19 0.44 0.5 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND u /L 04/20/20 0.44 0.5 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- Pentanoic Acid mg/L 10/16/09 0.18 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 04/29/10 0.27 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 08/02/10 0.27 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 10/25/12 0.052 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 05/02/13 0.052 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/24/13 0.052 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/14 0.052 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/02/14 0.052 -- -- -- ND 2.4 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/14/15 0.052 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 10/07/15 0.11 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND m g/L 04/18/16 0.11 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/26/16 0.11 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 04/25/17 0.11 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 10/17/17 0.11 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 04/16/18 0.11 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND u g/L 10/16/18 0.11 0.2 -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND ug/L 04/12/19 0.14 0.2 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND ug/L 10/07/19 0.14 0.2 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND u /L 04/20/20 0.14 0.2 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- Ethene mg/L 10/16/09 0.0004 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 04/29/10 0.0004 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 08/02/10 0.0004 -- -- -- ND ND ND -- -- -- -- ND ND -- -- -- ND -- -- -- ND mg/L 10/25/12 0.00054 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 05/02/13 0.0015 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/24/13 0.0015 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/14 0.0015 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/02/14 0.00062 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/14/15 0.00062 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/15 0.00062 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg/L 04/18/16 0.00062 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 09/26/16 0.00038 -- -- -- -- 0.0015 -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/25/17 0.0015 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 10/17/17 0.0015 -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m g/L 04/16/18 0.0015 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/16/18 0.0015 0.003 -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 04/12/19 0.0015 0.003 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND mg/L 10/07/19 0.0015 0.003 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND m /L 04/20/20 0.0015 0.003 -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- -- Methane mg/L 05/05/08 0.0004 -- -- -- -- 0.135 3.49 -- -- -- -- 0.009 0.003 -- -- -- 0.002 -- -- -- ND mg/L 10/16/09 0.0002 -- -- -- 0.001 0.266 1.06 -- -- -- -- 0.45 0.023 -- -- -- 0.085 -- -- -- ND mg/L 04/29/10 0.0002 -- -- -- ND 0.007 1.47 -- -- -- -- 0.029 ND -- -- -- 0.006 -- -- -- ND mg/L 08/02/10 0.0002 -- -- -- ND 0.213 1.30 -- -- -- -- 0.010 0.003 -- -- -- 0.03 -- -- -- ND mg/L 10/25/12 0.0043 -- -- -- ND 0.351 -- -- -- -- -- -- -- -- -- -- 0.00348 -- 0.0731 -- ND mg/L 05/02/13 0.0004 -- -- -- ND 0.00412 -- -- -- -- -- -- -- -- -- -- ND -- 0.0332 -- ND mg/L 09/24/13 0.0004 -- -- -- ND 0.0534 -- -- -- -- -- -- -- -- -- -- 0.0113 -- 0.0542 -- ND mg/L 04/25/14 0.0004 -- -- -- ND 20.8 -- -- -- -- -- -- -- -- -- -- ND -- 23 -- ND mg/L 10/02/14 0.0022 -- -- -- 0.00044 0.211 -- -- -- -- -- -- -- -- -- -- 0.0226 -- 0.0968 -- ND mg/L 04/14/15 0.00044 -- -- -- 0.000706 J 0.00509 -- -- -- -- -- -- -- -- -- -- 0.00187 -- 0.0273 -- ND mg/L 10/07/15 0.0044 -- -- -- -- 0.277 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ND mg/L 04/18/16 0.00044 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- 0.00316 -- 0.043 -- ND mg/L 09/26/16 0.00044 -- -- -- -- 0.0778 -- -- -- -- -- -- -- -- -- -- 0.0258 0.0773 ND mg/L 04/25/17 0.00044 -- -- -- 0.00214 0.0345 -- -- -- -- -- -- -- -- -- -- 0.000621 J -- 0.00112 -- ND mg/L 10/17/17 0.00044 -- -- -- -- 0.129 -- -- -- -- -- -- -- -- -- -- 0.0243 -- 0.155 -- ND mg/L 04/16/18 0.00044 -- -- -- ND 0.0209 -- -- -- -- -- -- -- -- -- -- 0.00142 -- 0.165 -- ND mg/L 10/16/18 0.00045 0.001 -- -- -- 0.0154 -- -- -- -- -- -- -- -- -- -- 0.00248 -- 0.003 -- ND mg/L 04/12/19 0.00045 0.001 -- -- ND 0.0224 -- -- -- -- -- -- -- -- -- -- 0.00628 -- 0.056 -- ND mg/L 10/07/19 0.00045 0.001 -- -- ND 0.0587 -- -- -- -- -- -- -- -- -- -- 0.006 -- 0.0444 -- ND m /L 04/20/20 0.00045 0.001 -- -- ND 0.0166 -- -- -- -- -- -- -- -- -- -- 0.00268 -- 0.024 -- -- Notes: mg/L = milligrams per liter ug/L = micrograms per liter nM = nano mols NC 2L = North Carolina Water Quality Standard IMAC = Interim Maximum Allowable Concentration (under NC 2L Rules) EPA MCL = United States Environmental Protection Agency Maximum Contaminant Limit J = Prior to the November 2018 event, J flags are estimated values below the SWS Reporting limit. Beginning with the November 2018 event, J flags are estimated B = blank -qualified data ND = not detected above the laboratory detection limit or stated reporting limit -- = no data available or no limit established # = EPA Action Level * = EPA Secondary MCL Blanks = field, trip and method blanks Bold = concentrations above applicable IMAC and/or NC 2L have been bolded. Shaded = concentrations above applicable EPA MCL have been shaded. MDL = laboratory method detection limit Data prior to April 2017 provided by S&ME Engineering Laboratory method blank data was unavailable for data prior to April 2017. However, B flags for the 04/16/09, 10/07/09, and 10/11/10 were present on The following dilutions were noted for the April 2020 event: Antimony and Thallium(2x) in MW-13, Antimony, Thallium, and Selenium(2X) in II-1,II-2,II-3,II-3B,II-4A,II6,II-7,II-7B,II-8,II-9, SMW-1,SMW-3,SMW-4, andMW-14; Cholride and Sulfate(100X) at II-1; Alkalinity(10X) at II-1; Chloride ans Sulfate(10X) at II-9, SMW-3; Alkalinity(5X) at II-9, SMW-3; 1,4- SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on 01/18/07 ,,,> GOLDER 9of9 July 2020 19131339.101 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Assessment Detected Monitoring Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Well Sentinel Monitoring Wells Constituent/Parameter Units Date MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 pH (Field) S.U. 03/25/99 5.94 6.82 5.69 5.98 6.17 NI 5.92 6.39 5.99 NI 6.48 NI NI NI NI NI NI S.U. 09/22/99 6.15 6.05 5.77 6.65 6.12 NI 5.94 6.24 6.25 NI 6.49 NI NI NI NI NI NI S.U. 03/27/00 6.61 7.76 -- 6.27 6.09 NI 6.34 7.11 6.06 NI 6.39 NI NI NI NI NI NI S.U. 09/13/00 6.70 6.62 -- 6.67 6.67 NI 6.49 6.72 6.41 NI 6.39 NI NI NI NI NI NI S.U. 03/13/01 6.55 5.71 -- 7.21 6.38 NI 6.01 6.01 5.31 -- 6.31 NI NI NI NI NI NI S. U. 09/13/01 6.29 5.20 6.09 6.88 6.09 N 1 6.03 6.43 6.04 10.71 6.28 N I N I N I N I N I N I S.U. 03/08/02 7.48 5.76 6.21 7.06 6.10 NI 6.05 6.53 5.57 10.15 6.38 NI NI NI NI NI NI S.U. 09/18/02 6.44 6.65 6.25 7.01 6.17 NI 6.19 6.45 5.70 10.59 6.88 NI NI NI NI NI NI S.U. 04/15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI S.U. 10/15/03 6.75 5.64 6.33 7.27 6.37 NI 6.18 6.42 5.63 10.76 6.88 NI NI NI NI NI NI S.U. 03/24/04 8.02 7.38 8.20 8.32 8.07 NI 8.65 7.94 7.67 10.89 7.67 NI NI NI NI NI NI S.U. 09/22/04 6.96 6.17 6.43 7.13 6.43 NI 6.47 6.63 5.87 7.33 7.33 NI NI NI NI NI NI S.U. 05/09/05 8.58 8.16 8.01 8.74 8.37 NI 8.47 8.04 8.03 10.77 8.11 NI NI NI NI NI NI S.U. 10/11/05 6.50 5.52 5.95 7.22 6.11 NI 6.00 6.41 5.48 11.30 6.18 -- NI -- NI NI NI S. U. 04/24/06 -- -- -- -- -- N I -- -- -- -- -- -- N I -- N I N I N I S.U. 10/19/06 -- 5.42 6.02 6.85 5.96 NI 6.02 6.35 5.29 11.16 6.18 -- NI -- NI NI NI S.U. 04/12/07 6.35 5.16 6.39 7.07 6.13 NI 6.06 6.45 5.62 11.17 6.28 -- NI -- NI NI NI S. U. 09/26/07 6.49 5.19 6.10 7.06 5.90 N 1 6.03 6.28 5.58 11.20 6.11 -- N I -- N I N I N I S. U. 04/29/08 6.48 5.66 6.31 6.86 5.93 N 1 6.44 5.53 9.50 10.81 6.27 6.54 N I -- N I N I N I S.U. 12/03/08 7.29 6.47 7.04 7.55 6.00 N I 7.10 6.35 6.10 11.63 6.90 -- N I -- N I N I N I S.U. 04/17/09 7.29 6.47 7.04 7.55 6.62 NI 7.10 6.35 6.10 11.63 6.90 7.74 NI -- NI NI NI S.U. 10/13/09 9.18 8.69 8.58 9.51 8.39 NI 8.71 8.89 8.29 13.60 8.53 9.15 NI -- NI NI NI S.U. 04/28/10 6.60 5.35 6.23 6.84 5.79 NI 6.24 6.41 5.50 10.49 6.18 6.68 NI 6.14 NI NI NI S. U. 08/02/10 -- -- 6.87 7.48 -- N I -- -- 6.15 11.14 -- -- N 1 7.03 6.57 7.40 6.54 S.U. 10/11/10 7.50 6.44 6.95 7.54 6.62 NI 7.05 7.38 6.28 11.41 7.04 7.46 NI 6.99 6.47 7.61 6.72 S. U. 05/ 11 / 11 -- -- -- -- -- N I -- -- -- -- -- -- N I -- -- -- -- S.U. 10/06/11 7.61 6.25 6.87 7.55 6.29 N 1 7.06 7.43 5.96 12.24 7.00 7.65 6.95 6.99 5.46 7.38 6.31 S.U. 04/17/12 7.83 6.81 7.25 7.90 6.58 NI 7.73 7.46 6.20 12.21 7.33 8.02 -- -- -- -- -- S.U. 10/22/12 7.88 6.43 7.48 8.37 6.91 NI 8.15 8.16 6.67 12.70 7.78 7.79 -- -- -- -- -- S.U. 04/24/13 8.29 6.83 7.71 8.37 7.16 NI 7.83 7.84 6.90 12.94 7.37 8.38 7.84 8.01 7.84 8.14 6.95 S.U. 09/10/13 8.33 6.71 7.30 8.13 6.78 7.11 7.67 7.81 7.14 12.31 7.16 7.96 7.58 7.65 6.76 7.93 7.13 S.U. 04/23/14 8.40 7.75 7.82 7.92 7.04 7.41 7.72 7.06 7.29 12.27 6.56 7.82 8.41 7.26 8.13 8.86 8.21 S.U. 10/03/14 7.69 6.55 7.28 7.54 6.69 6.91 7.14 7.44 6.62 10.39 7.14 7.79 7.45 7.43 7.53 7.65 7.08 S.U. 04/14/15 6.76 5.70 6.33 6.75 5.77 5.92 6.27 5.85 5.71 9.37 6.22 6.61 6.23 6.33 5.76 6.54 6.32 S.U. 10/05/15 6.47 -- 6.02 6.56 5.80 5.82 6.34 6.66 5.73 8.83 6.00 6.39 6.09 6.09 5.27 6.21 5.51 S.U. 04/19/16 6.36 4.90 6.29 6.41 5.66 5.96 6.22 5.98 5.54 9.97 6.10 6.46 5.90 5.57 -- -- -- S.U. 09/26/16 6.54 -- 6.20 6.00 5.63 5.90 6.22 6.58 5.58 9.22 6.07 6.42 6.16 6.11 5.68 6.45 5.83 S.U. 03/21/17 -- -- 6.24 6.50 -- 5.78 -- 6.40 5.52 -- -- -- -- -- -- -- -- S.U. 04/25/17 6.46 5.45 6.16 6.47 5.56 5.68 6.28 5.52 4.88 8.92 6.15 6.49 5.94 5.93 5.64 5.98 5.93 S.U. 10/17/17 6.55 -- 6.28 6.44 5.73 5.99 6.39 6.74 5.46 8.52 7.58 6.58 6.21 6.16 5.89 6.53 6.01 (verification event) S.U. 12/21/17 -- -- 6.29 -- 5.63 -- -- 6.59 -- -- -- -- -- -- -- -- -- S.U. 04/16/18 6.50 5.58 6.37 6.31 5.45 5.72 6.19 5.92 5.55 7.72 6.08 6.32 6.25 6.24 5.92 6.45 6.10 S.U. 10/16/18 6.39 -- 6.29 6.52 5.53 5.85 6.23 6.47 5.44 7.72 6.21 6.61 6.37 5.86 5.39 5.96 5.89 (verification event) S.U. 02/20/19 -- -- -- -- 5.66 -- -- -- -- -- -- -- -- -- -- -- 6.21 S.U. 04/09/19 6.67 4.74 6.56 6.47 5.67 5.96 6.38 5.76 5.43 6.70 6.16 6.90 6.20 5.69 6.28 6.43 6.40 S.U. 10/07/19 6.43 5.09 5.00 6.51 5.61 6.05 6.53 6.63 6.94 8.71 6.32 6.68 6.33 6.48 5.77 6.47 6.47 (verification event) S.U. 01/22/20 -- -- 6.37 -- -- -- -- -- -- -- 6.03 -- -- -- -- -- 6.16 S.U. 04/20/20 6.49 4.94 6.37 6.59 5.58 6.06 6.52 6.23 5.48 7.43 6.17 6.59 6.30 5.93 5.53 6.38 6.21 Specific Conductance (Field) us/cm 05/25/99 299 81 771 1475 2007 NI 599 1556 106 -- 594 NI NI NI NI NI NI us/cm 09/22/99 320 24 833 609 141 NI 580 752 63 -- 55 NI NI NI NI NI NI us/cm 03/27/00 353 101 -- 571 970 NI 540 204 89 -- 604 NI NI NI NI NI NI us/cm 09/13/00 335 44 -- 595 275 NI 553 436 96 -- 604 NI NI NI NI NI NI US/cm 03/13/01 7520 19102 -- 6223 6128 NI 11296 9121 8287 -- 9472 NI NI NI NI NI NI US/cm 09/13/01 88838 173392 59174 54857 40741 NI 53504 43038 183942 86446 33529 NI NI NI NI NI NI US/cm 03/08/02 676 223 1497 1298 464 NI 935 896 311 578 1365 NI NI NI NI NI NI US/cm 09/18/02 658 142 1591 1200 356 NI 862 2987 163 572 1351 NI NI NI NI NI NI US/cm 04/15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI US/cm 10/15/03 480 44 1308 820 808 NI 662 1970 113 794 1289 NI NI NI NI NI NI US/cm 03/24/04 428 56 221 845 1327 NI 802 1411 137 851 867 NI NI NI NI NI NI US/cm 09/22/04 472 46 1800 958 530 NI 732 1491 128 468 1448 NI NI NI NI NI NI US/cm 05/09/05 434 45 1610 970 1109 NI 785 2270 187 920 1520 NI NI NI NI NI NI US/cm 10/11 /05 576 92 1960 1123 482 NI 871 4450 295 966 1690 -- NI -- NI NI NI US/cm 04/24/06 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI US/cm 10/19/06 -- 57 2210 1120 465 NI 952 4110 152 890 2020 -- NI -- NI NI NI us/cm 04/12/07 514 47 2180 1040 434 NI 868 2070 242 879 2110 -- NI -- NI NI NI US/cm 09/26/07 582 50 2300 1035 414 NI 891 1010 246 885 2120 -- NI -- NI NI NI US/cm 04/29/08 45.7 7 2700 108 453 NI 34 13.1 9.5 70.3 238 121.7 NI -- NI NI NI US/cm 12/03/08 5390 71 2640 1053 442 NI 385 114 160 648 2660 -- NI -- NI NI NI US/cm 04/17/09 539 71 2640 1053 442 NI 385 114 160 648 2660 1.06 NI -- NI NI NI US/cm 10/13/09 552 70 2820 1145 457 NI 707 4110 492 639 2730 2.83 NI NI NI NI US/cm 04/28/10 439 42 2320 919 388 NI 536 2460 242 520 2370 909 NI 497 NI NI NI US/cm 08/02/10 -- -- 2460 922 -- NI -- -- 194 505 -- -- NI 641 207 478 1021 us/cm 10/11/10 446 60 2590 177 397 NI 615 3080 168 538 2530 1028 NI 535 158 498 858 US/cm 05/11/11 -- -- -- -- -- NI -- -- -- -- -- -- NI -- -- -- -- US/cm 10/06/11 447 78 3020 938 413 NI 460 3100 172 481 2530 931 562 535 147 363 642 US/cm 04/17/12 416 65 2470 94 424 NI 38 534 272 489 2850 767 -- -- -- -- -- US/cm 10/22/12 399 71 2760 95 420 NI 36 2.6 360 498 2990 950 -- -- -- -- -- US/cm 04/24/13 410 69 2150 97 464.0 NI 34 260 233 505 3110 863 532 755 211 491 821 US/cm 09/10/13 414 57 2800 92 455 167 461 2.74 447 493 3280 975 553 813 241 556 882 us/cm 04/23/14 395 56 2490 9870 479 1800 197 106 224 500 3380 596 544 188 202 529 803 US/cm 10/03/14 425 48 3250 1029 488 1730 509 3190 559 514 3530 995 567 854 375 628 1124 US/cm 04/14/15 268 34 1918 678 345 1153 266 188 246 337 2199 530 366 509 121 389 561 US/cm 10/05/15 304 -- 2617 757 375 1369 241 1245 328 395 2922 387 442 625 150 298 270 US/cm 04/19/16 323 38 2838 1047 477 1747 567 365 542 493 3691 851 563 289 -- -- -- US/cm 09/26/16 340 -- 2618 988 457 1611 815 2522 646 485 3124 768 548 758 329 712 845 us/cm 03/21/17 -- -- 3189 987 -- 1773 -- 1876 610 -- -- -- -- -- -- -- -- US/cm 04/25/17 362 56 2996 1017 480 1587 379 68 100 472 3916 349 527 730 191 213 234 us/cm 10/17/17 367 -- 2929 946 498 1733 781 2987 643 565 3839 612 547 783 262 778 806 (verification event) us/cm 12/21/17 -- -- 3058 -- 482 -- -- 2986 -- -- -- -- -- -- -- -- -- us/cm 04/16/18 321 99 3622 992 540 1915 259 482 196 696 3147 621 544 778 272 900 298 US/cm 10/16/18 317 -- 2776 836 407 1650 448.4 1102 142 526 3462 489.5 144 174.9 208 258.7 324 (verification event) US/cm 02/20/19 -- -- -- -- 459 -- -- -- -- -- -- -- -- -- -- -- 306 us/cm 04/09/19 368 34 2619 1001 455 1863 355 135 180 664 4158 455 531 383 539 844 439 us/cm 10/07/19 287 31 339 911 432 1414 999 1981 88 86 3377 701 491 97 522 111 81 (verification event) US/cm 01/22/20 -- -- 2902 -- -- -- -- -- -- -- 4215 -- -- -- -- -- 517 US/cm 04/20/20 424 31 3056 800 360 1298 393 755 264 524 4327 716 416 377 220 691 851 G 0 L D E R 1 of 3 July 2020 19131339.101 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Assessment Detected Monitoring Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Well Sentinel Monitoring Wells Constituent/Parameter Units Date MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Temperature (Field) °C 05/25/99 14.42 14.90 14.55 14.65 14.50 NI 11.30 13.30 12.95 -- 16.02 NI NI NI NI NI NI °C 09/22/99 14.84 15.01 16.65 15.38 15.37 NI 17.78 16.73 15.66 -- 18.35 NI NI NI NI NI NI °C 03/27/00 14.30 14.66 -- 14.58 15.01 NI 11.93 12.89 13.70 -- 16.27 NI NI NI NI NI NI °C 09/13/00 15.70 16.40 -- 16.07 16.06 NI 18.97 17.15 15.82 -- 16.27 NI NI NI NI NI NI °C 03/13/01 15.04 16.18 -- 15.57 15.26 NI 11.38 13.67 14.24 -- 16.41 NI NI NI NI NI NI °C 09/13/01 15.73 15.65 17.28 16.54 17.65 NI 20.08 18.24 16.18 20.68 18.10 NI NI NI NI NI NI °C 03/08/02 14.25 14.74 13.73 15.26 15.51 NI 12.31 12.70 14.08 14.45 16.06 NI NI NI NI NI NI °C 09/18/02 10.56 10.26 10.89 11.45 12.53 NI 14.29 11.87 10.62 10.35 13.21 NI NI NI NI NI NI °C 04/ 15/0 3 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI °C 10/15/03 14.67 14.78 16.00 15.78 16.39 NI 17.67 16.17 15.28 15.50 16.50 NI NI NI NI NI NI °C 03/24/04 14.42 15.05 13.31 15.48 14.93 NI 11.23 13.58 13.97 14.92 15.54 NI NI NI NI NI NI °C 09/22/04 16.30 15.40 16.10 16.60 16.90 NI 19.10 17.00 16.50 15.50 16.60 NI NI NI NI NI NI °C 05/09/05 19.24 22.78 15.99 20.79 20.32 NI 15.87 12.58 19.11 19.36 17.37 NI NI NI NI NI NI °C 10/11 /05 12.80 20.70 17.60 18.70 23.10 NI 17.60 18.70 17.00 15.70 16.60 -- NI -- NI NI NI °C 04/24/06 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI °C 10/19/06 -- 19.62 18.08 17.68 18.35 NI 19.47 18.30 17.99 17.40 16.74 -- NI -- NI NI NI °C 04/12/07 14.57 14.72 13.47 19.15 17.91 NI 10.04 15.55 17.12 17.13 14.23 -- NI -- NI NI NI °C 09/26/07 23.41 22.80 22.15 23.49 22.64 NI 17.58 29.18 17.45 15.95 18.01 -- NI -- NI NI NI oC 04/29/08 14.55 16.16 11.22 15.48 15.70 NI 16.60 14.60 15.60 13.51 14.19 13.95 NI -- NI NI NI oC 12/03/08 14.53 16.62 12.67 16.51 16.82 NI 15.98 11.96 16.18 13.38 9.47 -- NI -- NI NI NI oC 04/17/09 14.53 16.62 12.67 16.51 16.82 NI 15.98 11.96 16.18 13.38 9.47 11.41 NI -- NI NI NI °C 10/13/09 13.65 18.50 13.46 14.92 14.05 NI 18.60 19.07 12.15 11.70 21.48 12.01 NI NI NI NI °C 04/28/10 14.56 21.23 13.88 14.78 18.65 NI 22.07 14.44 18.12 14.19 18.22 15.94 NI 16.37 NI NI NI °C 08/02/10 -- -- 20.34 22.55 -- NI -- -- 25.17 23.19 -- -- NI 20.45 °C 10/11 /10 18.37 23.08 17.55 12.92 16.29 NI 17.51 15.71 18.24 17.16 18.01 21.81 NI 14.03 °C 0 5/ 11 / 11 -- -- -- -- -- NI -- -- -- -- -- -- NI -- -- -- -- °C 10/06/11 18.70 22.02 20.87 19.70 19.93 NI 19.08 19.13 18.71 18.42 16.72 18.68 19.11 14.03 18.37 16.81 17.35 °C 04/17/12 14.07 15.59 19.33 19.05 24.35 NI 16.75 13.72 24.72 21.74 14.18 14.12 -- -- -- -- -- °C 10/22/12 12.98 26.91 15.93 11.32 20.58 NI 18.34 15.15 14.00 10.97 17.68 16.29 -- -- -- -- -- °C 04/24/13 13.74 14.93 14.10 15.88 16.93 NI 15.31 13.42 14.14 14.58 15.10 14.53 14.78 13.44 13.09 14.28 12.31 °C 09/10/13 23.09 19.75 20.69 15.40 21.83 23.08 21.42 23.13 18.09 17.92 26.26 21.24 16.44 15.89 18.95 20.21 18.81 °C 04/23/14 16.52 17.52 12.21 17.30 18.61 18.67 16.49 17.49 10.88 8.38 17.51 16.50 18.73 14.78 14.45 17.73 18.66 °C 10/03/14 11.86 15.03 19.84 14.99 22.00 23.49 25.12 19.55 19.67 21.04 22.95 21.30 15.07 18.89 16.29 19.15 18.99 °C 04/14/15 13.96 15.23 15.06 17.58 17.53 17.84 19.26 16.31 17.61 17.93 13.64 12.79 16.82 12.07 12.02 13.28 12.04 °C 10/05/15 15.81 -- 19.91 15.46 16.27 16.12 18.61 16.17 17.48 18.75 18.65 16.96 17.50 14.78 19.57 17.46 17.73 °C 04/19/16 16.29 17.52 15.86 20.67 15.36 18.94 19.78 17.26 18.30 20.43 20.86 14.61 13.64 16.46 -- -- -- °C 09/26/16 18.06 -- 19.30 21.82 16.75 18.73 22.56 17.92 19.11 18.66 22.22 19.82 20.45 17.18 18.00 17.86 17.54 °C 03/21/17 -- -- 18.27 18.57 -- 15.12 -- 18.02 17.22 -- -- -- -- -- -- -- -- °C 04/25/17 14.35 15.79 14.21 17.68 17.07 14.78 13.99 17.00 15.32 16.61 16.37 15.69 16.82 15.00 15.07 15.68 14.76 °C 10/17/17 14.77 -- 16.00 17.37 17.01 17.53 19.71 16.70 16.33 16.68 17.85 18.85 17.67 15.84 17.32 16.38 16.49 (verification event) °C 12/21/17 -- -- 15.22 -- 16.27 -- -- 13.83 -- -- -- -- -- -- -- -- -- °C 04/16/18 14.3 15.4 12.9 16.9 17.1 16.4 15.6 15.1 16.1 16.2 17.7 14.6 15.3 13.1 12.6 14.4 13.3 °C 10/16/18 16.3 -- 17.1 17.0 16.6 15.8 18.1 16.7 16.4 16.5 17.5 19.0 18.4 16.8 19.5 18.3 17.8 (verification event) °C 02/20/19 -- -- -- -- 14.4 -- -- -- -- -- -- -- -- -- -- -- 11.1 °C 04/09/19 15.7 17.1 13.6 16.7 17.3 14.1 14.5 14.6 15.2 16.5 17.9 16.7 17.5 13.5 13.1 13.8 13.7 °C 10/07/19 17.7 18.4 17.6 18.5 19.4 17.0 18.8 17.8 17.8 18.1 18.4 18.4 17.0 16.1 18.2 17.1 17.0 (verification event) °C 01/22/20 -- -- 14.0 -- -- -- -- -- -- -- 16.2 -- -- -- -- -- 10.8 °C 04/20/20 15.2 15.7 14.2 16.7 16.7 14.8 14.1 14.3 13.6 15.8 17.1 16.2 15.8 13.7 14.0 14.3 14.3 Turbidity (Field) NTU 05/25/99 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 09/22/99 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 03/27/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 09/13/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 03/13/01 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 09/13/01 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 03/08/02 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 09/18/02 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 04/15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 10/15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 03/24/04 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 09/22/04 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 05/09/05 1.01 9.33 6.45 14.28 115 NI 7.54 3.98 0.82 0.22 1.27 NI NI NI NI NI NI NTU 10/11/05 10.0 6.00 2.13 4.47 47.1 NI 59.0 8.00 0.22 0.42 2.24 -- NI -- NI NI NI NTU 04/24/06 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI NTU 10/19/06 -- 4.81 4.44 1.24 115 NI 21.0 7.43 0.77 0.55 1.35 -- NI -- NI NI NI NTU 04/12/07 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI NTU 09/26/07 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI NTU 04/29/08 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI NTU 12/03/08 4.42 4.80 5.64 2.99 18.8 NI 32.8 10.26 3.35 3.46 3.75 -- NI -- NI NI NI NTU 04/17/09 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI NTU 10/13/09 -- -- -- -- -- NI -- -- -- -- -- -- NI NI NI NI NTU 04/28/10 6.98 3.23 21.50 6.57 15.32 NI 14.38 10.66 2.28 3.13 5.16 6.48 NI 12.75 NI NI NI NTU 08/02/10 -- -- 8.93 5.18 -- NI -- -- 4.76 3.85 -- -- NI 10.05 40.6 9.73 10.73 NTU 10/11/10 3.28 5.01 11.64 4.95 11.99 NI 11.96 13.56 4.55 2.8 9.3 6.12 NI 35.7 45.9 44.7 14.17 NTU 05/11/11 -- -- -- -- -- NI -- -- -- -- -- NI -- -- -- -- NTU 10/06/11 6.75 5.87 8.08 6.65 12.35 NI 34.8 38.0 8.09 6.86 5.51 7.55 15.33 35.7 20.6 57.0 15.07 NTU 04/17/12 4.28 5.57 6.24 4.24 12.59 NI 10.16 5.90 4.12 3.44 4.45 4.19 -- -- -- -- -- NTU 10/22/12 4.65 7.09 5.75 6.83 18.35 NI 9.37 10.43 4.71 6.58 10.2 5.22 -- -- -- -- -- NTU 04/24/13 9.00 7.44 6.01 5.76 18.48 NI 19.0 8.49 7.08 5.97 5.3 6.49 5.42 6.50 14.18 5.95 6.55 NTU 09/10/13 4.16 7.44 6.18 10.94 15.89 9.12 6.69 6.99 4.41 5.09 4.72 32.8 12.75 14.69 9.05 26.3 7.58 NTU 04/23/14 4.72 4.61 4.51 5.57 8.43 4.64 9.18 8.81 6.58 6.06 5.05 30.1 4.68 6.34 7.49 11.97 4.15 NTU 10/03/14 5.76 6.94 7.86 7.04 8.69 5.88 6.99 19.8 4.86 7.54 6.17 12.94 6.07 11.85 9.99 8.74 7.44 NTU 04/14/15 3.34 3.91 5.57 24.30 6.09 3.4 9.28 4.46 4.77 2.81 1.97 5.09 2.43 1.84 4.00 10.55 4.14 NTU 10/05/15 1.62 -- 0.00 0.35 5.20 0.00 80.0 9.00 0.35 0.00 0.00 32.9 0.00 12.1 19.2 9.30 11.1 NTU 04/19/16 2.01 7.52 5.77 1.01 19.8 1.03 16.9 9.81 2.89 5.21 3.35 32.8 4.22 5.46 6.10 12.35 3.52 NTU 09/26/16 21.3 -- 0.33 0.30 6.26 0.47 3.12 16.99 4.31 1.78 1.79 3.74 0.56 2.40 3.10 1.42 0.32 NTU 03/21/17 -- -- 1.62 0.72 -- 0.39 -- 5.95 3.75 -- -- -- -- -- -- -- -- NTU 04/25/17 10.3 1.39 1.52 3.32 24.5 0.79 108 60.4 5.76 1.66 2.33 94.6 2.32 8.73 44.7 18.6 24.5 NTU 10/17/17 3.58 -- 6.87 0.57 7.44 0.83 33.4 9.70 1.23 0.71 0.97 8.31 4.98 9.32 2.99 8.03 2.95 (verification event) NTU 12/21/17 -- -- 1.29 -- 9.59 -- -- 28.7 -- -- -- -- -- -- -- -- -- NTU 04/16/18 2.56 9.28 0.61 0.58 2.09 0.26 49.7 8.13 1.96 0.67 9.30 9.85 8.87 4.44 9.12 8.45 7.57 NTU 10/16/18 3.07 -- 0.28 0.99 8.01 9.8 19.8 6.27 8.19 0.3 2.89 8.38 15.0 9.19 5.89 8.11 2.92 (verification event) NTU 02/20/19 -- -- -- -- 12.0 -- -- -- -- -- -- -- -- -- -- -- 7.02 NTU 04/09/19 3.46 2.25 1.30 1.11 21.1 1.12 40.5 16.7 4.66 0.47 3.32 7.75 7.01 9.94 5.03 6.29 1.63 NTU 10/07/19 1.35 0.67 4.98 0.67 9.01 1.00 9.67 9.20 2.60 2.53 2.53 35.4 3.64 8.28 7.91 9.90 3.74 (verification event) NTU 01/22/20 -- -- 1.42 -- -- -- -- -- -- -- 1.99 -- -- -- -- -- 2.71 NTU 04/20/20 1.33 0.69 1.21 3.24 8.74 1.15 30.1 7.66 2.57 1.15 2.33 14.8 9.27 7.55 5.47 9.57 1.57 G 0 L D E R 2of3 July 2020 19131339.101 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Assessment Detected Monitoring Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Well Sentinel Monitoring Wells Constituent/Parameter Units Date MW-13 MW-14 II-1 II-2 II-3 II-4A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW-3 SMW-4 Oxidation Reduction my 05/25/99 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI Potential (Field) my 09/22/99 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 03/27/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 09/ 13/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 0 3/ 13/01 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 09/ 13/01 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 03/08/02 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 09/ 18/02 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 04/ 15/0 3 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 10/ 15/0 3 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 03/24/04 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 09/22/04 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI my 05/09/05 -65 -2 -310 -159 -198 NI -266 -278 -240 -139 -278 NI NI NI NI NI NI my 10/11 /05 197 92 67 136 57 NI 89 -57 189 78 42 -- NI -- NI NI NI my 04/24/06 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI my 10/19/06 -- -40 -159 -174 -95 NI -161 -148 -115 -284 -237 -- NI -- NI NI NI my 04/ 12/0 7 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI my 09/26/07 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI my 04/29/08 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI my 12/03/08 105 171 83 -49 77 NI 105 181 -47 204 -87 -- NI -- NI NI NI my 04/ 17/09 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI my 10/ 13/09 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI my 04/28/10 288 446 245 182 284 NI 244 193 332 159 309 79 NI 367 NI NI NI my 08/02/10 -- -- 186 142 -- NI -- -- 310 94 -- -- NI 274 212 213 288 my 10/11/10 244 345 192 177 247 NI 122 66 399 108 170 53 NI 180 278 127 334 my 05/ 11 / 11 -- -- -- -- -- NI -- -- -- -- -- -- NI -- -- -- -- mv 10/06/11 166 235 85 35 161 NI 113 -11 299 20 96 -46 98 180 266 181 286 my 04/17/12 171 240 97 16 154 NI 153 194 258 -28 90 -42 -- -- -- -- -- mv 10/22/12 127 235 95 41 137 NI 88 -45 221 -34 49 -30 -- -- -- -- -- mv 04/24/13 178 264 146 23 130 NI 185 206 202 17 58 -60 114 222 158 86 272 my 09/10/13 116 237 48 30 120 181 -17 -39 175 -165 73 -52 120 84 113 58 117 my 04/23/14 118 165 105 58 141 118 105 178 208 33 87 3 103 196 130 21 147 my 10/03/14 109 204 -54 26 13 -14 -69 -111 182 -3 19 -119 96 17 -123 -18 49 my 04/14/15 50 86 30 8 54 -10 38 67 67 -38 33 -127 36 78 58 -14 1.2 my 10/05/15 -38.4 -- -38 -14 -40 -46 6 -31 -29 -56.6 -39 -90 -42 -59 -66 -37 -37 my 04/19/16 135.0 266.0 21.0 31.7 142.0 89.0 63.0 103.0 214.0 -78.1 117.5 -78.0 126.0 139.0 131 50 111 my 09/26/16 42.2 -- -- 26 69.00 87 42 -72 103 94.1 50 -48 61 19 24 34 42 my 03/21/17 -- -- -22 38 -- 8 -- -61 159 -- -- -- -- -- -- -- -- mv 04/25/17 154.9 143.4 83.3 28.5 67.6 113.2 101.9 120 101.9 130.0 29.2 -41.3 67.9 76.0 99.0 105.7 112.1 my 10/17/17 154.1 -- -23.1 73.8 79.9 88.8 14.0 -89.1 132.1 120.7 39.5 -41.7 34.1 66.7 19.2 16.7 52.8 (verification event) my 12/21/17 -- -- 9.1 -- 66.0 -- -- -48.7 -- -- -- -- -- -- -- -- -- mv 04/16/18 364.8 -- 412.0 24.7 86.9 44.0 61.1 100.4 372.3 286.1 203.1 0.52 314.4 391.2 342.0 279.0 367.2 my 10/16/18 158.7 -- 59.7 20.7 135.8 83.4 60.0 -31.7 197.3 105.6 80.8 -99.40 26.4 128.5 187.0 165.8 180.2 (verification event) my 02/20/19 -- -- -- -- 317.0 -- -- -- -- -- -- -- -- -- -- -- 339.1 my 04/09/19 41.2 103.7 39.1 152.4 286.5 332.1 307.5 38.2 43.8 73.7 -40.7 -103.6 162.2 345.3 104.7 90.5 -70.9 my 10/07/19 196.3 250.3 -96.3 57.6 132.9 106.9 18.4 -65.9 -115.9 -221.7 83.1 -89.3 67.9 115.6 54.2 17.9 104.3 (verification event) my 01/22/20 -- -- -222.7 -- -- -- -- -- -- -- -230.9 -- -- -- -- -- -171.1 my 04/20/20 91.3 254.9 25.3 22.0 184.9 23.2 73.0 28.5 257.3 88.6 64.0 -75.2 64.7 557.0 110.0 71.0 121.0 Dissolved Oxygen (Field) mg/L 05/25/99 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 09/22/99 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 03/27/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 09/13/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 03/13/01 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 09/13/01 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 03/08/02 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 09/18/02 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 04/15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 10/15/03 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 03/24/04 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 09/22/04 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 05/09/05 3.61 6.33 0.38 4.33 0.40 NI 0.72 2.15 0.40 0.66 2.83 NI NI NI NI NI NI mg/L 10/11/05 5.69 6.25 1.64 4.42 2.61 NI 3.69 3.29 1.39 2.59 0.49 -- NI -- NI NI NI mg/L 04/24/06 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mg/L 10/19/06 -- 5.49 0.58 1.55 1.49 NI 1.22 1.28 0.88 0.50 0.40 -- NI -- NI NI NI mg/L 04/12/07 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mg/L 09/26/07 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mg/L 04/29/08 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mg/L 12/03/08 5.01 5.82 2.11 2.78 2.46 NI 1.66 6.29 2.13 0.71 1.86 -- NI -- NI NI NI mg/L 04/17/09 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mg/L 10/13/09 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mg/L 04/28/10 6.94 4.92 0.51 6.23 1.11 NI 2.81 4.80 5.10 2.59 0.39 1.10 NI 0.81 NI NI NI mg/L 08/02/10 -- -- 0.49 2.21 -- NI -- -- 0.61 1.96 -- -- NI 0.15 0.09 0.12 0.76 mg/L 10/11/10 3.49 3.40 0.28 2.52 0.39 NI 1.49 3.32 2.46 1.21 0.55 0.39 NI 0.47 0.58 0.54 1.57 mg/L 05/11/11 -- -- -- -- -- NI -- -- -- -- -- -- NI -- -- -- -- mg/L 10/06/11 4.49 4.87 0.49 3.29 1.72 NI 3.03 3.83 2.65 1.28 1.38 0.41 0.63 0.47 0.37 1.11 1.29 mg/L 04/17/12 4.75 4.37 0.62 2.34 1.87 NI 3.54 3.76 2.91 0.90 1.31 0.68 -- -- -- -- -- mg/L 10/22/12 3.75 2.30 1.43 3.24 0.49 NI 1.13 2.67 0.05 1.89 1.41 0.66 -- -- -- -- -- mg/L 04/24/13 4.36 4.05 1.69 2.96 2.01 NI 1.35 5.44 3.93 5.97 1.31 0.63 1.19 1.72 1.14 0.95 0.93 mg/L 09/10/13 5.95 4.06 2.67 5.90 6.29 6.00 7.20 3.74 1.26 1.71 3.56 1.66 1.19 0.99 0.78 1.09 0.69 mg/L 04/23/14 8.69 8.47 0.94 11.99 4.52 6.67 2.82 9.14 5.74 3.07 2.37 2.84 1.19 3.47 0.61 0.89 4.34 mg/L 10/03/14 4.59 4.68 0.59 3.11 1.41 3.85 3.30 3.02 1.51 2.60 0.70 2.90 0.65 0.32 0.33 0.60 0.41 mg/L 04/14/15 5.52 5.71 0.80 1.78 1.30 1.99 1.92 3.77 2.65 1.71 2.13 0.50 0.41 2.02 1.22 0.96 1.86 mg/L 10/05/15 3.80 -- 0.44 1.77 0.29 0.37 2.91 5.04 1.79 0.50 0.26 0.13 0.19 0.20 0.12 2.07 4.00 mg/L 04/19/16 6.18 8.48 0.54 3.70 2.26 4.04 3.17 4.90 4.19 0.50 0.26 0.18 0.51 0.29 0.31 0.25 0.30 mg/L 09/26/16 4.81 -- 0.38 2.03 1.03 2.30 2.44 2.15 0.84 0.50 0.50 0.17 0.29 0.38 0.42 0.28 0.30 mg/L 03/21/17 -- -- 0.61 1.29 -- 5.47 -- 2.61 0.99 -- -- -- -- -- -- -- -- mg/L 04/25/17 3.65 1.39 0.88 2.57 1.32 0.96 1.16 6.28 7.90 3.28 0.69 0.22 1.30 3.92 6.11 4.56 2.70 mg/L 10/17/17 2.85 -- 0.39 1.11 1.04 1.16 0.50 1.54 0.52 1.27 0.19 0.70 0.25 0.19 0.84 0.37 0.61 (verification event) mg/L 12/21/17 -- -- 0.35 -- 0.48 -- -- 1.35 -- -- -- -- -- -- -- -- -- mg/L 04/16/18 3.38 -- 0.95 2.27 0.79 0.58 1.36 3.49 3.26 0.79 0.12 0.52 0.24 1.17 6.43 0.43 3.31 mg/L 10/16/18 3.55 -- 0.49 0.57 0.31 0.19 0.39 2.14 2.41 0.30 0.48 2.20 0.61 0.23 0.17 2.12 1.53 (verification event) mg/L 02/20/19 -- -- -- -- 2.01 -- -- -- -- -- -- -- -- -- -- -- 3.11 mg/L 04/09/19 3.43 3.42 5.57 1.57 1.32 0.34 1.22 4.69 2.91 1.16 0.18 0.68 0.10 0.56 0.16 0.09 0.52 mg/L 10/07/19 2.37 1.53 0.76 1.77 0.70 0.52 0.95 1.58 0.64 0.88 0.27 0.11 0.24 0.51 0.23 0.40 0.39 (verification event) mg/L 01/22/20 -- -- 2.37 -- -- -- -- -- -- -- 0.37 -- -- -- -- -- 1.86 mg/L 04/20/20 2.89 3.54 0.67 1.67 0.42 0.79 0.94 1.71 1.13 0.46 0.22 0.06 0.17 0.45 0.31 0.20 0.33 Notes: S.U. = Standard Units NTU = Nephelometric Turbidity Units uS/cm = microsiemens per centimeter mg/L = milligramer per liter my = Millivolts -- = no data available or dry well G 0 L D E R 3of3 July 2020 19131339.101 TABLE 6 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points Detection Quanitation Reporting Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Antimony ug/L 03/01/00 -- -- 30 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 30 ND ND ND ND ND ND ug/L 03/01/01 -- -- 30 ND ND ND ND ND ND ug/L 09/01/01 -- -- 30 ND ND ND ND ND ND ug/L 03/01/02 -- -- 30 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 30 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 30 ND ND ND ND ND ND ug/L 10/01/03 -- -- 30 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 30 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 30 ND ND ND ND ND ND ug/L 05/01/05 -- -- 30 ND ND ND ND ND ND ug/L 10/01/05 -- -- 30 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 30 ND ND ND ND ND ND ug/L 10/01/06 -- -- 30 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.68 -- 6 -- ND ND ND ND ND ug/L 12/04/08 0.68 -- 6 -- ND ND ND ND ND ug/L 04/13/09 0.68 -- 6 -- ND ND ND ND ND ug/L 10/20/09 0.073 -- 6 0.461 B 0.185 B 0.351 B 0.346 B 0.337 B -- ug/L 04/30/10 0.22 -- 6 -- ND 0.272 J 0.225 J 0.258 J ND ug/L 10/11/10 0.22 -- 6 -- 0.329 J 0.254 J 0.233 J 0.221 J ND ug/L 05/12/11 0.22 -- 6 0.448 J ND 0.287 J 0.241 J 0.261 J ND ug/L 10/07/11 1.1 -- 6 ND ND ND 0.287 J 0.24 J ND ug/L 04/19/12 0.22 -- 6 0.279 J ND 0.34 J 0.308 J 0.284 J ND ug/L 10/26/12 0.22 -- 6 ND ND ND ND ND ND ug/L 04/25/13 0.22 -- 6 ND ND ND ND ND ND ug/L 09/12/13 0.22 -- 6 ND 0.344 J 0.28 J ND ND ND ug/L 04/25/14 0.22 -- 6 0.695 J 1.62 J 0.582 J 0.332 J 0.264 J ND ug/L 10/02/14 0.22 -- 6 0.526 J ND 0.378 J 0.268 J 0.267 J ND ug/L 04/06/15 0.22 -- 6 0.312 J ND 0.232 J ND 0.754 J ND ug/L 10/07/15 0.22 -- 6 0.268 J ND 0.372 J 0.259 J ND ND ug/L 04/20/16 0.22 -- 6 0.22 ND ND 0.424 J 0.261 J ND ug/L 09/26/16 0.22 -- 6 ND ND ND ND 0.479 J ND ug/L 04/28/17 0.37 -- 6 0.708 J ND 0.485 J ND ND ND ug/L 10/17/17 0.37 -- 6 0.455 J ND 0.490 J ND 0.654 J ND ug/L 04/16/18 1.85 -- 6 ND ND ND ND ND ND ug/L 10/18/18 1.85 5.00 -- ND ND ND ND ND ND ug/L 04/12/19 0.74 2.00 -- ND ND ND ND ND ND ug/L 10/08/19 0.74 2.00 -- ND ND ND ND ND ND ug/L 04/20/20 0.74 2.00 -- ND ND ND ND ND ND Arsenic ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND Human Health = 10 ug/L ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND 2.4 J ND 2.2 J ND ug/L 12/04/08 2.8 -- 10 -- ND ND ND ND ND ug/L 04/13/09 2.8 -- 10 -- ND ND ND ND ND ug/L 10/20/09 2.8 -- 10 ND ND ND ND ND ND ug/L 04/30/10 2.8 -- 10 -- ND ND ND ND ND ug/L 10/11/10 2.8 -- 10 -- ND ND ND ND ND ug/L 05/12/11 2.8 -- 10 3.04 J 3.39 J ND ND ND ug/L 10/07/11 2.8 -- 10 ND ND ND ND ND ND ug/L 04/19/12 2.8 -- 10 ND ND 3.12 J ND ND ND ug/L 10/26/12 2.8 -- 10 ND ND ND ND 5.25 J ND ug/L 04/25/13 2.8 -- 10 ND ND ND ND ND ND ug/L 09/12/13 5.4 -- 10 ND ND ND ND ND ND ug/L 04/25/14 5.4 -- 10 ND ND ND ND ND ND ug/L 10/02/14 5.4 -- 10 6.11 J ND ND ND ND ND ug/L 04/06/15 6.8 -- 10 ND ND ND ND ND ND ug/L 10/07/15 6.8 -- 10 ND ND ND ND ND ND ug/L 04/20/16 6.8 -- 10 ND ND ND ND ND ND ug/L 09/26/16 6.8 -- 10 ND ND ND ND ND ND ug/L 04/28/17 6.8 -- 10 ND ND ND ND ND ND ug/L 10/17/17 6.8 -- 10 ND ND ND ND ND ND ug/L 04/16/18 6.8 -- 10 ND ND ND 9.17 J ND ND ug/L 10/18/18 7.6 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 7.6 10.0 -- ND ND ND ND ND ND ug/L 10/08/19 7.6 10.0 -- ND ND ND ND ND ND ug/L 04/20/20 7.6 10.0 -- ND ND ND ND ND ND Barium ug/L 03/01/00 -- -- 500 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 500 ND ND ND ND ND ND Human Health = 200 mg/L ug/L 03/01/01 -- -- 500 ND ND ND ND ND ND ug/L 09/01/01 -- -- 500 ND ND ND ND ND ND ug/L 03/01/02 -- -- 500 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 500 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 500 ND ND ND ND ND ND ug/L 10/01/03 -- -- 500 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 500 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 500 ND ND ND ND ND ND ug/L 05/01/05 -- -- 500 ND ND ND ND ND ND ug/L 10/01/05 -- -- 500 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 500 ND ND ND ND ND ND ug/L 10/01/06 -- -- 500 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 41.8 J 54.8 J 21.7 J 25.4 J 25.6 J ND ug/L 09/25/07 -- -- -- 74.5 J 70.9 J 16.8 J 23 J 24 J ND ug/L 05/05/08 0.2 -- 100 -- 51.2 B 53 B 92.5 B 65.5 B ND ug/L 12/04/08 1 -- 100 -- 35.9 J 21.8 J 27 J 27 J ND ug/L 04/13/09 4.2 -- 100 -- 53.4 J 44.8 J 41.6 J 42 J ND ug/L 10/20/09 1 -- 100 68.3 J 36.3 J 21.8 J 27.2 J 26.9 J ND ug/L 04/30/10 1 -- 100 -- 48.5 J 30.9 J 37.1 J 44.2 J ND ug/L 10/11/10 1 -- 100 -- 47.1 J 18.8 J 29.3 J 30.6 J ND ug/L 05/12/11 1 -- 100 77.3 J 39.3 J 40.3 J 35.3 J 37 J ND ug/L 10/07/11 1 -- 100 74.2 J 76.4 J 21.4 J 42.7 J 32.2 J ND ug/L 04/19/12 1 -- 100 43.7 J 48.4 J 23.5 J 33.7 J 33.7 J ND ug/L 10/26/12 1 -- 100 48.2 J 51.2 J 25.2 J 34.8 J 35.1 J ND ug/L 04/25/13 1 -- 100 57 J 65.1 J 28.5 J 40.8 J 37.8 J ND ug/L 09/12/13 1 -- 100 56.7 J 40.7 J 25.3 J 31.5 J 33.9 J ND ug/L 04/25/14 1 -- 100 100 60.8 J 49.3 J 52.7 J 48.8 J ND ug/L 10/02/14 1 -- 100 112 45.9 J 22.3 J 24.4 J 25.1 J ND ug/L 04/06/15 1 -- 100 59.3 J 44.3 J 42.2 J 35.5 J 47.3 J ND ug/L 10/07/15 1 -- 100 85.7 J 46.2 J 28.3 J 319 41 J ND ug/L 04/20/16 1 -- 100 113 46.3 J 47.5 J 31 J 35.4 J ND ug/L 09/26/16 1 -- 100 44.8 J 52.8 J 17.6 J 27.9 J 33.9 J ND ug/L 04/28/17 1 -- 100 46.5 J 45.4 J 59.9 J 50.2 J 45.0 J ND ug/L 10/17/17 1 -- 100 40.1 J 33.6 J 55.8 J 41.2 J 37.8 J ND ug/L 04/16/18 1 -- 100 42.9 J 45.4 J 42.1 J 43.9 J 44.1 J ND ug/L 10/18/18 1.1 10.0 -- 56.6 57.4 56.4 61.7 61.3 ND ug/L 04/12/19 1.1 10.0 -- 60.9 64.6 40.0 56.8 56.6 ND ug/L 10/08/19 1.1 10.0 -- 55.9 49.1 55.1 57.8 60.0 ND ug/L 04/20/20 1.1 10.0 -- 41.9 48.0 44.2 42.2 40.5 ND Beryllium ug/L 03/01/00 -- -- 2 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 2 ND ND ND ND ND ND Acute = 65 ug/L ug/L 03/01/01 -- -- 2 ND ND ND ND ND ND Chronic = 6.5 ug/L ug/L 09/01/01 -- -- 2 ND ND ND ND ND ND ug/L 03/01/02 -- -- 2 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 2 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 2 2.4 2.4 2.3 2.3 ND ND ug/L 10/01/03 -- -- 2 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 2 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 2 ND ND ND ND ND ND ug/L 05/01/05 -- -- 2 ND ND ND ND ND ND ug/L 10/01/05 -- -- 2 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 2 ND ND ND ND ND ND ug/L 10/01/06 -- -- 2 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.7 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.1 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.08 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.1 -- 1 0.113 J ND ND ND ND 0.42 J ug/L 04/30/10 0.1 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.1 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.1 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.1 -- 1 ND 0.149 J ND ND ND ND ug/L 04/19/12 0.1 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.1 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.1 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.1 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.1 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.1 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.1 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.1 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.1 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.1 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.13 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.13 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.16 1.00 -- ND ND ND ND ND ND ug/L 04/12/19 0.16 1.00 -- ND ND ND ND ND ND ug/L 10/08/19 0.16 1.00 -- ND ND ND ND ND ND ug/L 04/20/20 0.16 1.00 -- ND ND ND ND ND ND Cadmium ug/L 03/01/00 -- -- 1 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 1 ND ND ND ND ND ND Acute = SW-1: 4.59 ug/L, ug/L 03/01/01 -- -- 1 ND ND ND ND ND ND SW-2: 4.13 ug/L, SW-3: 3.67 ug/L, ug/L 09/01/01 -- -- 1 1.1 ND ND ND ND ND SW-4: 3.79 ug/L, and SW-5: 3.14 ug/L ug/L 03/01/02 -- -- 1 ND ND ND ND ND ND Chronic = SW-1: 0.66 ug/L, ug/L 09/01/02 -- -- 1 ND 1.2 ND ND ND ND SW-2: 0.60 ug/L, SW-3: 0.55 ug/L, ug/L 04/01/03 -- -- 1 4.1 3.8 4.0 3.9 ND ND SW-4: 0.66 ug/L, and SW-5: 0.48 ug/L ug/L 10/01/03 -- -- 1 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 1 1.0 ND 1.0 ND ND ND ug/L 09/01 /04 -- -- 1 ND ND ND ND ND ND ug/L 05/01/05 -- -- 1 ND ND ND ND ND ND ug/L 10/01/05 -- -- 1 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 1 ND ND ND ND ND ND ug/L 10/01/06 -- -- 1 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.5 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.36 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.09 -- 1 -- 0.14 J 0.17 J 0.26 J 0.21 J ND ug/L 10/20/09 0.36 -- 1 0.477 J ND ND ND ND ND ug/L 04/30/10 0.36 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.36 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.36 -- 1 0.471 J ND ND ND ND ND ug/L 10/07/11 0.36 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.36 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.36 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.36 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.36 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.36 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.36 -- 1 0.661 J ND ND ND ND ND ug/L 04/06/15 0.36 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.36 -- 1 0.784 J ND ND 5.66 ND ND ug/L 04/20/16 0.36 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.36 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.36 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.36 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.36 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.36 1.00 -- ND ND ND ND ND ND ug/L 04/12/19 0.36 1.00 -- ND ND ND ND ND ND ug/L 10/08/19 0.36 1.00 -- ND ND ND ND ND ND ug/L 04/20/20 0.36 1.00 -- ND ND ND ND ND ND (30 GOLDER 1 of 5 July 2020 19131339.101 TABLE 6 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points Detection Quanitation Reporting Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Chromium ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 10 ND ND 25 14 20 ND Acute = SW-1: 926 ug/L, ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-2: 837 ug/L, SW-3: 751 ug/L, ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND SW-4: 926 ug/L, and SW-5: 648 ug/L ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND Chronic = SW-1: 121 ug/L, ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND SW-2: 97.6 ug/L, SW-3: 97.6 ug/L, ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND SW-4: 121 ug/L, and SW-5: 84.2 ug/L ug/L 10/01/03 -- -- 10 ND ND 10 ND ND ND ug/L 03/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND 15.0 ND ND ug/L 12/04/08 1 -- 10 -- ND 2.3 J ND 1.40 J ND ug/L 04/13/09 0.7 -- 10 -- 1.40 J 1.60 J 1.10 J 1.10 J ND ug/L 10/20/09 1 -- 10 8.16 J ND ND ND ND ND ug/L 04/30/10 1 -- 10 -- ND 1.14 J ND 1.95 J ND ug/L 10/11/10 1 -- 10 -- 2.52 J 1.00 1.00 1.00 ND ug/L 05/12/11 1 -- 10 4.37 J ND 1.09 J ND ND ND ug/L 10/07/11 1 -- 10 6.97 J 6.25 J 1.21 J 3.00 J ND ND ug/L 04/19/12 1 -- 10 1.11 J ND ND ND ND ND ug/L 10/26/12 1 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.4 -- 10 1.44 J 2.12 J ND ND 2.57 J ND ug/L 09/12/13 1.4 -- 10 ND ND ND ND ND ND ug/L 04/25/14 1.4 -- 10 11.7 ND 4.26 J 1.7 J ND ND ug/L 10/02/14 1.4 -- 10 20.6 B 2.13 B 13.4 B 2.50 B 2.70 B -- ug/L 04/06/15 1.4 -- 10 3.66 J ND 3.36 J ND 3.51 J ND ug/L 10/07/15 1.4 -- 10 7.93 J ND ND 66.1 ND ND ug/L 04/20/16 1.4 -- 10 14.6 ND 6.73 J ND ND ND ug/L 09/26/16 1.4 -- 10 ND ND ND ND ND ND ug/L 04/28/17 1.4 -- 10 ND ND 5.88 J 1.43 J ND ND ug/L 10/17/17 1.4 -- 10 ND ND 3.94 J ND ND ND ug/L 04/16/18 1.4 -- 10 1.74 J ND 1.80 J ND 1.92 J ND ug/L 10/18/18 1.4 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 1.4 10.0 -- 1.93 J 1.77 J ND ND 2.09 J ND ug/L 10/08/19 1.4 10.0 -- 1.83 J ND ND ND ND ND ug/L 04/20/20 1.4 10.0 -- 1.65 J ND 1.70 J ND ND ND Cobalt ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND 17 ND ND ND ND ug/L 04/01/03 -- -- 10 14 14 15 14 ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 3.5 J ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND 7.1 J 3.8 J ND ug/L 12/04/08 1.1 -- 10 -- ND ND ND 2.9 J ND ug/L 04/13/09 0.6 -- 10 -- 1.8 J 0.7 J 0.8 J 0.6 J ND ug/L 10/20/09 1.1 -- 10 3.43 J ND ND ND ND ND ug/L 04/30/10 1.1 -- 10 -- ND ND ND 1.98 J ND ug/L 10/11/10 1.1 -- 10 -- ND ND ND ND ND ug/L 05/12/11 1.1 -- 10 3.19 J ND ND ND ND ND ug/L 10/07/11 1.1 -- 10 4.06 J 6.5 J 1.19 J 2.28 J ND ND ug/L 04/19/12 1.1 -- 10 ND ND ND ND ND ND ug/L 10/26/12 1.1 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.1 -- 10 ND 2.03 J ND ND ND ND ug/L 09/12/13 1.1 -- 10 ND ND 1.46 J 1.15 J ND ND ug/L 04/25/14 1.1 -- 10 4.31 J ND 1.91 J ND ND ND ug/L 10/02/14 1.1 -- 10 8.95 J ND 4.56 J 2.46 J 2.45 J ND ug/L 04/06/15 1.1 -- 10 1.73 J ND 2.44 J 1.56 J 2.18 J ND ug/L 10/07/15 1.1 -- 10 4.34 J ND 2.43 J 46.5 1.92 J ND ug/L 04/20/16 1.1 -- 10 7.38 J ND 4.32 J 1.66 J 2.1 J ND ug/L 09/26/16 1.1 -- 10 ND 1.30 J ND ND ND ND ug/L 04/28/17 1.1 -- 10 ND ND 2.31 J ND ND ND ug/L 10/17/17 1.1 -- 10 ND ND 2.94 J ND ND ND ug/L 04/16/18 1.1 -- 10 1.65 J 1.49 J ND 1.30 J 1.32 J ND ug/L 10/18/18 1.4 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 1.4 10.0 -- ND 1.40 J ND ND ND ND ug/L 10/08/19 1.4 10.0 -- ND ND ND ND ND ND ug/L 04/20/20 1.4 10.0 -- ND ND ND ND ND ND Copper ug/L 03/01/00 -- -- 200 ND ND ND ND ND ND SW Standards ug/L 09/01/00 -- -- 200 ND ND ND ND ND ND Acute = SW-1: 23.5 ug/L, ug/L 03/01/01 -- -- 200 ND ND ND ND ND ND SW-2: 20.9 ug/L, SW-3: 18.5 ug/L, ug/L 09/01/01 -- -- 200 ND ND ND ND ND ND SW-4: 23.5 ug/L, and SW-5: 15.6 ug/L ug/L 03/01/02 -- -- 200 ND ND ND ND ND ND Chronic = SW-1: 14.9 ug/L, ug/L 09/01/02 -- -- 200 ND ND ND ND ND ND SW-2: 13.4 ug/L, SW-3: 11.9 ug/L, ug/L 04/01/03 -- -- 200 ND ND ND ND ND ND SW-4: 14.9 ug/L, and SW-5: 10.2 ug/L ug/L 10/01/03 -- -- 200 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 200 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 200 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 200 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 200 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 200 ND ND ND ND ND ND ug/L 10/01/06 -- -- 200 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 2.20 J 1.50 J 6.20 J 4.50 J 4.30 J ND ug/L 09/25/07 -- -- -- 11.2 0.6 10.3 8.40 J 10.1 ND ug/L 05/05/08 0.6 -- 10 -- 1.3 J 2.50 J 13.3 3.7 J ND ug/L 12/04/08 1.6 -- 10 -- 20.5 4.60 J 4.30 J 6.40 J ND ug/L 04/13/09 0.81 -- 10 -- 1.93 J 2.56 J 1.87 J 1.78 J ND ug/L 10/20/09 1.6 -- 10 10.7 ND 7.1 J 5.15 J 5.26 J ND ug/L 04/30/10 1.6 -- 10 -- ND 5.90 J 3.30 J 6.33 J ND ug/L 10/11/10 1.6 -- 10 -- 10.2 8.12 J 5.59 J 3.91 J ND ug/L 05/12/11 1.6 -- 10 12.6 ND 3.34 J 2.89 J 3.03 J ND ug/L 10/07/11 1.6 -- 10 8.31 J 5.88 J 4.91 J 6.56 J 3.28 J ND ug/L 04/19/12 1.6 -- 10 2.72 J ND 5.01 J 4.36 J 4.11 J ND ug/L 10/26/12 1.6 -- 10 2.04 J ND 5.47 J 2.22 J 2.71 J ND ug/L 04/25/13 1.6 -- 10 3.43 J 5.01 J 4.46 J 4.33 J 6.16 J ND ug/L 09/12/13 1.6 -- 10 1.94 J ND 1.67 J ND ND ND ug/L 04/25/14 1.6 -- 10 16.7 B 3.46 B 10.5 B 5.92 B 6.29 B -- ug/L 10/02/14 1.6 -- 10 30.9 1.82 J 6.82 J 5.42 J 5.30 J ND ug/L 04/06/15 1.6 -- 10 4.30 J 3.71 J 11.1 5.23 J 8.24 J ND ug/L 10/07/15 1.6 -- 10 11.3 1.6 2.65 J 57.1 2.17 J ND ug/L 04/20/16 1.6 -- 10 21.2 ND 10.8 2.56 J 4.07 J ND ug/L 09/26/16 1.6 -- 10 4.52 J 2.57 J 6.61 J 6.03 J 8.07 J ND ug/L 04/28/17 1.6 -- 10 5.19 J 3.02 J 13.4 4.55 J 4.51 J ND ug/L 10/17/17 1.6 -- 10 3.95 J 1.77 J 9.07 J 2.58 J 2.89 J ND ug/L 04/16/18 1.6 -- 10 4.40 J 4.19 J 4.11 J 5.33 J 3.98 J ND ug/L 10/18/18 1.6 10.0 -- 3.11 J 3.84 J 2.72 J 2.42 J 3.55 J ND ug/L 04/12/19 1.6 10.0 -- 3.44 J 5.44 J 5.11 J 3.66 J 4.18 J ND ug/L 10/08/19 1.6 10.0 -- 2.23 J 1.81 J 2.92 J 2.66 J 1.60 J ND ug/L 04/20/20 1.6 10.0 -- 4.72 J ND 4.85 J 6.44 J 4.63 J ND Lead ug/L 03/01/00 -- 10 ND ND 15 ND ND ND SW Standards ug/L 09/01/00 -- -- 10 ND ND 10 ND ND ND Acute = SW-1: 122 ug/L, ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-2: 107 ug/L, SW-3: 93.0 ug/L, ug/L 09/01/01 -- -- 10 25 ND ND ND ND ND SW-4: 122 ug/L, and SW-5: 76.6 ug/L ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND Chronic = SW-1: 4.77 ug/L, ug/L 09/01/02 -- -- 10 ND 86 ND ND ND ND SW-2: 4.18 ug/L, SW-3: 3.62 ug/L, ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND SW-4: 4.77 ug/L, and SW-5: 2.98 ug/L ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 11.2 ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND 14.8 ND ND ug/L 12/04/08 1.9 -- 10 -- ND ND ND ND ND ug/L 04/13/09 1.6 -- 10 -- 2.30 J 2.50 J 1.60 1.60 ND ug/L 10/20/09 1.9 -- 10 8.94 J ND ND 2.44 J 3.34 J ND ug/L 04/30/10 1.9 -- 10 -- ND ND ND 2.04 J ND ug/L 10/11/10 1.9 -- 10 -- 5.45 J 1.90 1.90 1.90 ND ug/L 05/12/11 1.9 -- 10 15.4 ND 2.00 J ND ND ND ug/L 10/07/11 1.9 -- 10 10.0 16.4 ND 3.33 J ND ND ug/L 04/19/12 1.9 -- 10 ND ND 2.38 J ND ND ND ug/L 10/26/12 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.9 -- 10 ND 4.74 J ND ND ND ND ug/L 09/12/13 2.1 -- 10 ND ND ND ND ND ND ug/L 04/25/14 2.1 -- 10 11.2 3.23 J 3.36 J 2.23 J 2.82 J ND ug/L 10/02/14 2.1 -- 10 ND ND ND ND ND ND ug/L 04/06/15 3.1 -- 10 ND ND ND ND ND ND ug/L 10/07/15 3.1 -- 10 7.02 J ND ND 93.2 ND ND ug/L 04/20/16 3.1 -- 10 14.6 ND 6.10 J ND ND ND ug/L 09/26/16 3.1 -- 10 ND ND ND ND ND ND ug/L 04/28/17 3.1 -- 10 ND ND 4.66 J ND ND ND ug/L 10/17/17 3.1 -- 10 ND ND 3.18 J ND ND ND ug/L 04/16/18 3.1 -- 10 ND ND ND ND ND ND ug/L 10/18/18 3.1 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 3.1 10.0 -- 3.91 J ND ND ND ND ND ug/L 10/08/19 3.1 10.0 -- ND ND ND ND ND ND ug/L 04/20/20 3.1 10.0 -- ND ND ND ND ND ND Nickel ug/L 03/01/00 -- -- 50 ND ND ND ND ND ND SW Standards ug/L 09/01/00 -- -- 50 ND ND 82 65 81 ND Acute = SW-1: 774 ug/L, ug/L 03/01/01 -- -- 50 ND ND ND ND ND ND SW-2: 697 ug/L, SW-3: 622 ug/L, ug/L 09/01/01 -- -- 50 ND ND ND ND ND ND SW-4: 774 ug/L, and SW-5: 535 ug/L ug/L 03/01/02 -- -- 50 ND ND ND ND ND ND Chronic = SW-1: 85.9 ug/L, ug/L 09/01/02 -- -- 50 ND ND ND ND ND ND SW-2: 77.4 ug/L, SW-3: 69.1 ug/L, ug/L 04/01/03 -- -- 50 ND ND ND ND ND ND SW-4: 85.9 ug/L, and SW-5: 59.4 ug/L ug/L 10/01/03 -- -- 50 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 50 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 50 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 50 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 50 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 50 ND ND ND ND ND ND ug/L 10/01/06 -- -- 50 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 2.7 J ND 2.5 J ND ug/L 09/25/07 -- -- -- ND ND 7.6 J ND ND ND ug/L 05/05/08 2.0 -- 50 -- 3.5 J 3.9 J 5.5 J 6.7 J ND ug/L 12/04/08 1.8 -- 50 -- ND 4.3 J 3.8 J 3.2 J ND ug/L 04/13/09 0.6 -- 50 -- 2.3 J 1.5 J 1.6 J 1.5 J ND ug/L 10/20/09 1.8 -- 50 2.94 J ND 2.53 J 1.89 J ND ND ug/L 04/30/10 1.8 -- 50 -- ND ND ND 2.14 J ND ug/L 10/11/10 1.8 -- 50 -- 1.80 2.22 J 1.80 1.80 ND ug/L 05/12/11 1.8 -- 50 2.34 J ND ND 2.57 J 2.66 J ND ug/L 10/07/11 1.8 -- 50 3.64 J 4.23 J 6.40 J 4.31 J 3.43 J ND ug/L 04/19/12 1.8 -- 50 ND ND 2.56 J 2.00 J 2.23 J ND ug/L 10/26/12 1.8 -- 50 ND 1.92 J 5.32 J 5.14 J 5.46 J ND ug/L 04/25/13 1.8 -- 50 2.38 J 3.30 J 6.20 J 6.96 J 6.85 J ND ug/L 09/12/13 1.8 -- 50 ND ND 2.09 J ND ND ND ug/L 04/25/14 1.8 -- 50 4.30 J 2.07 J 7.49 J 5.52 J 5.55 J ND ug/L 10/02/14 1.8 -- 50 7.25 J ND 23.7 J 9.96 J 10.6 J ND ug/L 04/06/15 1.8 -- 50 2.02 J ND 3.03 J 2.33 J 2.46 J ND ug/L 10/07/15 1.8 -- 50 3.16 J ND 6.56 J 22.0 J 3.14 J ND ug/L 04/20/16 2.2 -- 50 5.60 J ND 5.02 J 8.54 J 2.88 J ND ug/L 09/26/16 2.2 -- 50 ND ND 3.54 J 3.34 J 6.44 J ND ug/L 04/28/17 2.2 -- 50 ND ND 6.02 J 2.83 J 2.62 J ND ug/L 10/17/17 2.2 -- 50 ND ND ND ND ND ND ug/L 04/16/18 2.2 -- 50 ND ND ND ND ND ND ug/L 10/18/18 2.2 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 2.2 10.0 -- ND ND ND ND ND ND ug/L 10/08/19 2.2 10.0 -- ND ND ND ND 2.40 J ND ug/L 04/20/20 2.2 10.0 -- 36.8 ND 3.71 J ND ND ND k> GOLDER 2of5 July 2020 19131339.101 TABLE 6 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points Detection Quanitation Reporting Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Selenium ug/L 03/01/00 -- -- 20 ND ND ND ND ND ND SW Standards ug/L 09/01/00 -- -- 20 ND ND ND ND ND ND Acute = 5 ug/L ug/L 03/01/01 -- -- 20 ND ND ND ND ND ND Chronic = 5 ug/L ug/L 09/01/01 -- -- 20 ND ND ND ND ND ND ug/L 03/01/02 -- -- 20 ND ND ND ND ND ND ug/L 09/01/02 -- -- 20 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 20 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 20 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 20 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 20 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 20 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 20 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 20 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 20 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND 2.9 J ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND ND ND ND ug/L 12/04/08 2.7 -- 10 -- ND ND ND ND ND ug/L 04/13/09 3.4 -- 10 -- ND ND ND ND ND ug/L 10/20/09 2.7 -- 10 ND ND ND ND ND ND ug/L 04/30/10 0.83 -- 10 -- 1.72 J 0.9 J 0.974 J 1.23 J ND ug/L 10/11/10 0.83 -- 10 -- 0.83 0.83 0.83 0.875 J ND ug/L 05/12/11 0.83 -- 10 ND ND ND 1.16 J 0.926 J ND ug/L 10/07/11 4.15 -- 10 ND ND ND 1.03 J 1.16 J ND ug/L 04/19/12 0.83 -- 10 ND ND ND ND ND ND ug/L 10/26/12 0.83 -- 10 ND ND ND ND ND ND ug/L 04/25/13 0.83 -- 10 ND ND ND ND ND ND ug/L 09/12/13 0.91 -- 10 ND ND ND ND ND ND ug/L 04/25/14 0.91 -- 10 ND ND ND ND ND ND ug/L 10/02/14 0.91 -- 10 ND ND ND ND ND ND ug/L 04/06/15 0.91 -- 10 ND ND ND ND ND ND ug/L 10/07/15 0.91 -- 10 ND ND ND ND ND ND ug/L 04/20/16 0.91 -- 10 ND ND ND ND ND ND ug/L 09/26/16 0.91 -- 10 ND ND ND ND ND ND ug/L 04/28/17 6.2 -- 10 ND ND ND ND ND ND ug/L 10/17/17 6.2 -- 10 ND ND ND ND ND ND ug/L 04/16/18 6.2 -- 10 ND ND ND ND ND ND ug/L 10/18/18 6.2 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 6.2 10.0 -- ND ND ND ND ND ND ug/L 10/08/19 6.2 10.0 -- ND ND ND ND ND ND ug/L 04/20/20 6.2 10.0 -- ND ND ND ND ND ND Silver ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND SW Standards ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND Acute = SW-1: 8.93 ug/L, ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-2: 7.22 ug/L, SW-3: 5.74 ug/L, ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND SW-4: 8.93 ug/L, and SW-5: 4.21 ug/L ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND Chronic = 0.6 ug/L ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND 2.20 J ND 2.40 J ND ug/L 12/04/08 1.9 -- 10 -- ND ND ND 2.80 J ND ug/L 04/13/09 1.0 -- 10 -- ND ND ND ND ND ug/L 10/20/09 1.9 -- 10 ND ND ND ND ND ND ug/L 04/30/10 1.9 -- 10 -- 2.22 J ND ND ND ND ug/L 10/11/10 1.9 -- 10 -- ND ND ND ND ND ug/L 05/12/11 1.9 -- 10 ND ND ND ND ND ND ug/L 10/07/11 1.9 -- 10 ND ND ND ND ND ND ug/L 04/19/12 1.9 -- 10 ND ND ND ND ND ND ug/L 10/26/12 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.9 -- 10 2.06 J ND 1.95 J 2.29 J 2.31 J ND ug/L 09/12/13 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/14 1.9 -- 10 ND ND ND ND ND ND ug/L 10/02/14 1.9 -- 10 ND ND ND ND ND ND ug/L 04/06/15 1.9 -- 10 ND ND ND ND ND ND ug/L 10/07/15 1.9 -- 10 ND ND 2.74 J ND 2.32 J ND ug/L 04/20/16 1.9 -- 10 ND ND ND ND ND ND ug/L 09/26/16 1.9 -- 10 ND ND ND ND ND ND ug/L 04/28/17 1.9 -- 10 ND ND ND ND ND ND ug/L 10/17/17 1.9 -- 10 ND ND ND ND ND ND ug/L 04/16/18 1.9 -- 10 ND ND ND ND ND ND ug/L 10/18/18 1.9 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 1.9 10.0 -- ND ND ND ND ND ND ug/L 10/08/19 1.9 10.0 -- ND ND ND ND ND ND ug/L 04/20/20 1.9 10.0 -- ND ND ND ND ND ND Thallium ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND 12 ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 0.053 J 0.05 J 0.045 J 0.055 J 0.054 J ND ug/L 05/05/08 0.036 -- 5.5 -- ND ND ND ND ND ug/L 12/04/08 0.036 -- 5.5 -- ND ND ND ND ND ug/L 04/13/09 0.036 -- 5.5 -- ND ND ND ND ND ug/L 10/20/09 0.11 -- 5.5 0.11 0.11 0.11 0.11 0.11 ND ug/L 04/30/10 0.11 -- 5.5 -- ND ND ND ND ND ug/L 10/11/10 0.11 -- 5.5 -- ND ND ND ND ND ug/L 05/12/11 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/07/11 0.55 -- 5.5 ND ND ND ND ND ND ug/L 04/19/12 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/26/12 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/25/13 0.11 -- 5.5 ND ND ND ND ND ND ug/L 09/12/13 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/25/14 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/02/14 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/06/15 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/07/15 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/20/16 0.11 -- 5.5 ND ND ND ND ND ND ug/L 09/26/16 0.11 -- 5.5 0.190 J 0.124 J 0.205 J 0.187 J 0.316 J ND ug/L 04/28/17 0.11 -- 5.5 0.389 J 0.267 J 0.261 J 0.287 J 0.205 J ND ug/L 10/17/17 0.11 -- 5.5 0.819 J 0.655 J 0.698 J 0.840 J 0.425 J ND ug/L 04/16/18 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/18/18 0.55 5.00 -- ND ND ND ND ND ND ug/L 04/12/19 0.22 2.00 -- ND ND ND ND ND ND ug/L 10/08/19 0.22 2.00 -- ND ND ND ND ND ND ug/L 04/20/20 0.22 2.00 -- ND ND ND ND ND ND Vanadium ug/L 03/01/00 -- -- 40 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 40 ND ND ND ND ND ND ug/L 03/01/01 -- -- 40 ND ND ND ND ND ND ug/L 09/01/01 -- -- 40 ND ND ND ND ND ND ug/L 03/01/02 -- -- 40 ND ND ND ND ND ND ug/L 09/01/02 -- -- 40 ND 44 ND ND ND ND ug/L 04/01 /03 -- -- 40 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 40 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 40 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 40 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 40 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 40 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 40 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 40 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 7.1 J ND ND 1.5 J 1.2 J ND ug/L 05/05/08 1 -- 25 -- ND ND 9.3 J 2.4 J ND ug/L 12/04/08 1.4 -- 25 -- ND ND ND 2.5 J ND ug/L 04/13/09 0.7 -- 25 -- 4.2 J 2.1 J 2.5 J 2.6 J ND ug/L 10/20/09 1.4 -- 25 10.7 J 2.19 J 1.81 J 2.79 J 1.86 J ND ug/L 04/30/10 1.4 -- 25 -- ND ND ND 3.45 J ND ug/L 10/11/10 1.4 -- 25 -- 8.27 J 3.03 J 2.55 J 2.02 J ND ug/L 05/12/11 1.4 -- 25 8.52 J 1.90 J 2.35 J 2.27 J 2.42 J ND ug/L 10/07/11 1.4 -- 25 11.9 J 21.0 J 2.27 J 6.55 J 1.66 J ND ug/L 04/19/12 1.4 -- 25 2.33 J ND 1.48 J 1.60 J 1.44 J ND ug/L 10/26/12 1.4 -- 25 ND ND ND ND ND ND ug/L 04/25/13 1.4 -- 25 2.31 J 5.99 J ND ND ND ND ug/L 09/12/13 1.4 -- 25 2.11 J ND 1.70 J 1.53 J ND ND ug/L 04/25/14 1.4 -- 25 17.9 J ND 4.7 J 2.25 J 1.60 J ND ug/L 10/02/14 1.4 -- 25 42.2 ND 3.14 J 2.66 J 2.26 J ND ug/L 04/06/15 1.4 -- 25 2.34 J ND 3.33 J ND 4.62 J ND ug/L 10/07/15 1.4 -- 25 18.2 J 2.91 J 3.69 J 61.8 3.05 J ND ug/L 04/20/16 1.4 -- 25 26.9 ND 12.0 J 2.13 J 3.04 J ND ug/L 09/26/16 1.4 -- 25 1.95 J ND ND 1.64 J 4.58 J ND ug/L 04/28/17 1.4 -- 25 2.61 J 1.66 J 8.36 J 2.35 J 2.36 J ND ug/L 10/17/17 1.4 -- 25 2.42 J ND 7.92 J 3.42 J 2.88 J ND ug/L 04/16/18 1.4 -- 25 2.33 J 2.14 J 2.45 J 2.94 J 3.67 J ND ug/L 10/18/18 1.4 10.0 -- 1.88 J 2.26 J 1.51 J 1.61 J 1.70 J ND ug/L 04/12/19 1.4 10.0 -- 1.54 J 4.16 J 2.39 J 1.78 J 2.09 J ND ug/L 10/08/19 1.4 10.0 -- 2.45 J ND 2.33 J 1.96 J 1.78 J ND ug/L 04/20/20 1.4 10.0 -- 1.75 J ND 2.28 J 2.49 J 1.85 J ND Zinc ug/L 03/01/00 -- -- 50 ND ND 31 58 68 ND SW Standards ug/L 09/01/00 -- -- 50 ND ND 130 50 60 ND Acute = SW-1: 194 ug/L, ug/L 03/01/01 -- -- 50 ND ND 68 ND 56 ND SW-2: 175 ug/L, SW-3: 156 ug/L, ug/L 09/01/01 -- -- 50 120 ND 60 ND 50 ND SW-4: 194 ug/L, and SW-5: 134 ug/L ug/L 03/01/02 -- -- 50 ND ND 70 50 60 ND Chronic = SW-1: 195 ug/L, ug/L 09/01/02 -- -- 50 ND 180 80 ND ND ND SW-2: 176 ug/L, SW-3: 157 ug/L, ug/L 04/01/03 -- -- 50 ND ND ND ND 50 ND SW-4: 195 ug/L, and SW-5: 135 ug/L ug/L 10/01/03 -- -- 50 ND ND 120 50 50 ND ug/L 03/01 /04 -- -- 50 ND ND 52 ND ND ND ug/L 09/01 /04 -- -- 50 58 ND 56 ND 59 ND ug/L 05/01 /05 -- -- 50 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 50 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 50 ND ND 51.6 ND ND ND ug/L 10/01 /06 -- -- 50 ND ND 60.9 ND ND ND ug/L 04/10/07 -- -- -- 7.6 J 23.5 48.4 38.2 39.5 ND ug/L 09/25/07 -- -- -- 84.9 11.4 60.4 36.4 45.7 ND ug/L 05/05/08 1.0 -- 10 -- 5.8 J 6.4 J 154 20.4 ND ug/L 12/04/08 3.8 -- 10 -- 22.4 47.9 35.3 34.6 ND ug/L 04/13/09 3.4 -- 10 -- 24.9 21.4 25.8 27.2 ND ug/L 10/20/09 3.8 -- 10 70.0 7.62 J 45.2 30.9 33.2 ND ug/L 04/30/10 3.8 -- 10 -- 6.64 J 48.1 34.0 54.2 ND ug/L 10/11/10 3.8 -- 10 -- 32.0 30.1 22.8 22.9 ND ug/L 05/12/11 3.8 -- 10 76.2 10.1 33.5 27.7 36.9 ND ug/L 10/07/11 3.8 -- 10 102 62.1 45.0 60.5 32.1 ND ug/L 04/19/12 3.8 -- 10 5.98 J ND 32.0 21.6 22.9 ND ug/L 10/26/12 3.8 -- 10 12.3 5.81 J 25.3 20.3 22.0 ND ug/L 04/25/13 3.8 -- 10 15.0 25.8 42.6 31.6 33.1 ND ug/L 09/12/13 3.8 -- 10 9.73 J ND 29.8 14.9 17.1 ND ug/L 04/25/14 3.8 -- 10 66.3 7.92 J 63.3 37.2 33.7 ND ug/L 10/02/14 3.8 -- 10 144 3.94 J 63.6 34.9 34.0 ND ug/L 04/06/15 3.8 -- 10 16.4 5.33 J 57.3 30.0 51.6 ND ug/L 10/07/15 3.8 -- 10 117 7.88 J 25.2 1020 24.5 ND ug/L 04/20/16 4.4 -- 10 111 ND 95.5 31.5 44.7 ND ug/L 09/26/16 4.4 -- 10 5.08 J 5.21 J 20 16.4 27.7 ND ug/L 04/28/17 4.4 -- 10 11.0 6.98 J 64.8 21.1 20.1 ND ug/L 10/17/17 4.4 -- 10 8.83 J ND 32.5 5.72 J ND ND ug/L 04/16/18 4.4 -- 10 11.4 10.6 10.3 16.3 15.7 ND ug/L 10/18/18 4.4 10.0 -- 12.9 12.2 11.8 17.5 18.4 ND ug/L 04/12/19 4.4 10.0 -- 11.6 16.2 13.9 12.1 15.6 ND ug/L 10/08/19 4.4 10.0 -- 7.17 J ND 6.31 J 6.76 J 7.48 J ND ug/L 04/20/20 4.4 10.0 -- 27.1 ND 13.6 13.3 10.1 ND k> GOLDER 3of5 July 2020 19131339.101 TABLE 6 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date Detection Quanitation Reporting Blanks Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Acetone ug/L 03/01/00 -- -- 100 ND ND ND ND ND -- SW Standard = 2000 ug/L ug/L 09/01/00 -- -- 100 ND ND ND ND ND ND ug/L 03/01/01 -- -- 100 ND ND ND ND ND ND ug/L 09/01 /01 -- -- 100 ND ND ND ND ND ND ug/L 03/01/02 -- -- 100 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 100 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 100 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 100 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 100 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 100 ND ND ND ND ND ND ug/L 05/01/05 -- -- 100 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 100 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 100 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 100 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND 5.3 J 68 J 1.7 J 6.3 J ND ug/L 05/05/08 0.62 -- 100 -- ND ND ND ND ND ug/L 12/04/08 1.5 -- 100 -- 7.9 J 9.1 J 7.6 J 7.8 J ND ug/L 04/13/09 1.5 -- 100 -- ND ND ND ND ND ug/L 10/20/09 1.5 -- 100 ND ND 6.0 J ND 6.2 J ND ug/L 04/30/10 1.5 -- 100 -- 3.0 J 3.5 J 4.6 J 4.1 J ND ug/L 10/11/10 1.5 -- 100 -- ND ND ND ND ND ug/L 05/12/11 1.2 -- 100 9.7 J 7.5 J ND ND ND ND ug/L 10/07/11 1.2 -- 100 ND ND ND ND ND ND ug/L 04/19/12 1.2 -- 100 ND ND ND ND ND ND ug/L 10/26/12 1.2 -- 100 ND 4.4 J ND ND ND ND ug/L 04/25/13 0.96 -- 100 1.0 J 1.0 J ND ND 1.6 J ND ug/L 09/12/13 1.2 -- 100 ND ND ND ND ND ND ug/L 04/25/14 1.2 -- 100 ND ND ND ND ND ND ug/L 10/02/14 1.2 -- 100 ND ND ND ND ND ND ug/L 04/06/15 1.2 -- 100 ND ND ND ND ND ND ug/L 10/07/15 1.2 -- 100 ND ND ND ND ND ND ug/L 04/20/16 1.2 -- 100 ND ND ND ND ND ND ug/L 09/26/16 10 -- 100 ND 11 J ND ND 11 J ND ug/L 04/28/17 10 -- 100 23 B 19 B 19 B 36 B 16 B 33 J ug/L 10/17/17 10 -- 100 ND ND ND ND ND ND ug/L 04/16/18 10 -- 100 ND ND ND ND ND ND ug/L 10/18/18 10 20 -- ND ND ND ND ND ND ug/L 04/12/19 10 20 -- ND ND ND ND ND ND ug/L 10/08/19 10 20 -- ND ND ND ND ND ND ug/L 04/20/20 10 20 -- ND ND ND ND ND ND Chloroform ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /01 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 5 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 0.16 0.16 2.5 J 0.69 J 0.6 J ND ug/L 09/25/07 -- -- -- 0.37 J ND 8.4 1.2 J 1.2 J ND ug/L 05/05/08 0.2 -- 5 -- ND ND ND ND ND ug/L 12/04/08 0.2 -- 5 -- 0.2 0.58 J 0.2 0.2 ND ug/L 04/13/09 0.2 -- 5 -- ND ND ND ND ND ug/L 10/20/09 0.2 -- 5 ND ND 2.4 J 2.1 J 1.3 J ND ug/L 04/30/10 0.083 -- 5 -- ND 1.8 J ND ND ND ug/L 10/11/10 0.2 -- 5 -- 0.2 7.4 2.0 J 2.0 J ND ug/L 05/12/11 0.7 -- 5 ND ND ND J ND ND ND ug/L 10/07/11 0.7 -- 5 ND ND 2.4 J 0.92 J 1.1 J ND ug/L 04/19/12 0.18 -- 5 ND ND 1.0 J 0.45 J ND ND ug/L 10/26/12 0.18 -- 5 ND ND 1.2 J ND ND ND ug/L 04/25/13 0.25 -- 5 ND ND 0.51 J ND ND ND ug/L 09/12/13 0.18 -- 5 ND ND 1.8 J 0.76 J 0.76 J ND ug/L 04/25/14 0.18 -- 5 1.6 J ND 1.7 J 0.46 J 0.58 J ND ug/L 10/02/14 0.18 -- 5 1.2 J ND 0.95 J 1.0 J ND ND ug/L 04/06/15 0.18 -- 5 ND ND 0.49 J ND ND ND ug/L 10/07/15 0.18 -- 5 ND ND 2.4 J 0.92 J 1.0 J ND ug/L 04/20/16 0.18 -- 5 ND ND ND ND ND ND ug/L 09/26/16 0.18 -- 5 ND ND 1.6 J ND ND ND ug/L 04/28/17 0.18 -- 5 ND ND ND ND ND ND ug/L 10/17/17 0.18 -- 5 ND ND ND ND ND ND ug/L 04/16/18 0.18 -- 5 ND ND ND ND ND ND ug/L 10/18/18 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.18 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.18 1.0 -- ND ND ND ND ND ND Dibromochloromethane ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND No SW Standard ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 5 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 0.54 J ND ND ND ug/L 09/25/07 -- -- -- ND ND 2.8 J ND ND ND ug/L 05/05/08 0.28 -- 3 -- ND ND ND ND ND ug/L 12/04/08 0.32 -- 3 -- ND ND ND ND ND ug/L 04/13/09 0.32 -- 3 -- ND ND ND ND ND ug/L 10/20/09 0.32 -- 3 ND ND ND ND ND ND ug/L 04/30/10 0.067 -- 3 -- ND ND ND ND ND ug/L 10/11/10 0.32 -- 3 -- 0.32 6.6 1.2 J 4.6 ND ug/L 05/12/11 0.63 -- 3 ND ND ND ND ND ND ug/L 10/07/11 0.63 -- 3 ND ND ND ND ND ND ug/L 04/19/12 0.17 -- 3 ND ND ND ND ND ND ug/L 10/26/12 0.17 -- 3 ND ND ND ND ND ND ug/L 04/25/13 0.49 -- 3 ND ND ND ND ND ND ug/L 09/12/13 0.17 -- 3 ND ND ND ND ND ND ug/L 04/25/14 0.17 -- 3 ND ND ND ND ND ND ug/L 10/02/14 0.17 -- 3 ND ND ND ND ND ND ug/L 04/06/15 0.17 -- 3 ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 3 ND ND ND ND ND ND ug/L 04/20/16 0.17 -- 3 ND ND ND ND ND ND ug/L 09/26/16 0.17 -- 3 ND ND ND ND ND ND ug/L 04/28/17 0.17 -- 3 ND ND ND ND ND ND ug/L 10/17/17 0.17 -- 3 ND ND ND ND ND ND ug/L 04/16/18 0.17 -- 3 ND ND ND ND ND ND ug/L 10/18/18 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.17 1.0 -- ND ND ND ND ND ND 1,4-D ichlorobenzene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND SW Standard = 100 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 5 ND ND ND ND ND ND uq/L 04/01 /06 -- __ 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.2 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.38 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.38 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.38 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.1 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.79 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.79 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.19 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.19 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.14 -- 1 ND ND 0.46 J ND 0.19 J ND ug/L 09/12/13 0.19 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.19 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.19 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.19 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.19 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.19 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.19 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.19 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.19 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.19 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.19 1.0 -- ND ND ND ND ND ND C hloromethane ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /01 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.23 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.34 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.34 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.34 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.05 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.34 -- 1 -- 0.82 B 0.34 0.34 B 0.62 B 0.43 J ug/L 05/12/11 0.55 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.55 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.13 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.13 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.44 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.13 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.13 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.13 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.13 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.13 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.13 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.13 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.13 -- 1 0.42 J ND ND 0.78 J 0.41 J ND ug/L 10/17/17 0.13 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.13 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.13 1.0 -- ND ND ND ND ND ND (30 GOLDER 4of5 July 2020 19131339.101 TABLE 6 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date Detection Quanitation Reporting Blanks Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Methylene Chloride ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /01 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /01 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /02 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.24 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.53 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.53 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.53 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.07 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.53 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.14 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.14 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.23 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.23 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.5 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.23 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.23 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.23 -- 1 ND ND ND ND 0.77 J ND ug/L 04/06/15 0.23 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.23 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.23 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.23 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.23 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.23 1.0 -- ND ND ND ND ND 0.73 J ug/L 10/08/19 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.23 1.0 -- ND ND ND ND ND ND Trichloroethene ug/L 03/01 /00 -- -- 5 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND Human Health = 30 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /01 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 5 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.25 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.38 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.38 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.38 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.13 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.72 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.72 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.15 -- 1 ND ND 0.69 J ND ND ND ug/L 10/26/12 0.15 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.23 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.15 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.15 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.15 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.15 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.15 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.15 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.15 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.15 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.15 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.15 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ND ND ND ND Xylenes (Total) ug/L 09/25/07 -- -- ND ND ND ND ND ND ug/L 05/05/08 0.67 5 -- ND ND ND ND -- ug/L 12/04/08 0.4 5 -- ND ND ND ND -- ug/L 04/13/09 0.4 5 -- ND ND ND ND -- ug/L 10/20/09 0.4 5 ND ND ND ND ND ND ug/L 04/30/10 0.22 5 -- ND ND ND ND -- ug/L 10/11/10 0.4 5 -- ND ND ND ND ND ug/L 05/12/11 2.1 5 ND ND ND ND ND -- ug/L 10/07/11 2.1 5 ND ND ND ND ND -- ug/L 04/19/12 0.45 5 ND ND ND ND ND -- ug/L 10/26/12 0.45 5 ND ND ND ND ND -- ug/L 04/25/13 0.67 5 ND ND ND ND ND -- ug/L 09/12/13 0.45 5 ND ND ND ND ND -- ug/L 04/25/14 0.45 5 ND ND ND ND ND -- ug/L 10/02/14 0.45 5 ND ND ND ND ND -- ug/L 04/06/15 0.45 5 ND ND ND ND ND -- ug/L 10/07/15 0.45 5 ND ND ND ND ND -- ug/L 04/20/16 0.45 5 ND ND ND ND ND -- ug/L 09/26/16 0.45 5 ND ND ND ND ND -- ug/L 04/28/17 0.45 5 ND ND ND ND ND ND ug/L 10/17/17 0.45 5 ND ND ND ND ND ND ug/L 04/16/18 0.45 5 ND ND ND ND ND ND ug/L 10/18/18 0.45 3.0 ND ND ND ND ND ND ug/L 04/12/19 0.45 3.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.45 3.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.45 3.0 -- ND ND ND ND 1.5 J ND 1,4-Dioxane ug/L 10/18/18 1.2 2.0 -- ND ND ND 2.1 1.5 J ND (SW Standard = 80 ug/L) ug/L 04/12/19 1.2 2.0 -- ND 1.6 J ND ND ND ND ug/L 10/08/19 1.2 2.0 -- ND 1.3 J ND 1.2 J ND ND ug/L 04/20/20 0.80 2.0 -- ND 1.6 J ND 0.89 J 0.91 J ND Notes: B = blank -qualified data Shaded = concentrations above acute standards are shaded Bold = concentrations above chronic standards are bolded Data prior to April 2017 provided by S&ME Engineering # = EPA Action Level * = EPA Secondary MCL Blanks = field, trip and method blanks IMAC = Interim Maximum Allowable Concentration (under NC 2L Rules) EPA MCL = United States Environmental Protection Agency Maximum Contaminant Level MDL = laboratory method detection limit ug/L = micrograms per liter mg/L = milligrams per liter nM = nano mols SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on 01/18/07 -- = no data available or no limit established NC 2L = North Carolina Water Quality Standard ND = not detected above the laboratory detection limit or stated reporting limit J = Prior to the November 2018 event, J flags are estimated values below the SWS Reporting limit. Beginning with the November 2018 event, J flags are estimated values between MDL and PQL. The following dilutions were noted for the April 2020 event: antimony and thallium by 2x (all points) Laboratory method blank data was unavailable for data prior to April 2017. However, B flags for the 04/16/09, 10/07/09, and 10/11/10 were present on laboratory electronic files. (30 GOLDER 5of5 July 2020 19131339.101 TABLE 7 Summary of Surface Water Field Parameters Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points Sample Date (SW Standard) Units SW-1 SW-2 SW-3 SW-4 SW-5 pH (Field) S. U. 03/25/99 7.27 7.26 7.30 -- S. U. 09/23/99 7.15 7.54 6.86 -- -- S. U. 03/27/00 8.06 8.15 7.89 8.19 8.02 S. U. 09/13/00 7.56 7.31 ND 7.25 7.06 S. U. 03/12/01 7.51 7.29 7.29 7.24 7.18 S. U. 09/13/01 7.51 7.51 7.22 7.24 7.18 S. U. 03/07/02 7.20 7.26 7.04 7.20 6.80 S. U. 09/18/02 7.43 7.33 -- 7.36 6.97 S. U. 04/15/03 7.87 7.60 7.61 7.50 7.62 S. U. 10/15/03 7.26 6.80 6.98 7.15 6.99 S. U. 03/24/04 9.50 8.80 8.99 8.63 8.63 S. U. 09/22/04 7.76 7.26 7.61 7.61 7.63 S. U. 05/10/05 9.56 9.41 9.36 9.45 9.28 S. U. 10/11 /05 7.37 7.07 7.19 7.17 7.35 S. U. 04/24/06 7.11 6.99 6.86 7.20 7.38 S. U. 10/ 16/06 -- -- -- -- -- S. U. 04/10/07 6.24 6.64 6.55 7.02 7.16 S. U. 09/25/07 6.81 7.28 6.28 7.36 7.20 S. U. 05/02/08 -- -- -- -- -- S. U. 12/05/08 -- 7.82 7.56 7.85 7.98 S. U. 04/16/09 -- 8.01 8.13 7.89 7.89 S. U. 10/07/09 -- -- -- -- -- S. U. 04/28/ 10 -- -- -- -- -- S. U. 10/05/10 -- 8.05 7.65 8.05 7.81 S. U. 05/ 10/ 11 7.74 7.74 7.71 7.64 7.54 S. U. 10/06/11 7.21 7.26 6.90 7.22 7.70 S. U. 04/16/12 -- -- -- -- -- S. U. 10/24/12 -- -- -- -- -- S. U. 04/24/13 6.97 7.24 6.92 7.16 7.63 S. U. 09/09/13 7.68 8.30 7.59 7.76 7.69 S. U. 04/22/14 7.54 7.29 7.30 7.37 7.02 S. U. 10/01 /14 8.03 8.03 7.88 7.72 7.84 S. U. 04/07/15 8.13 7.77 7.59 7.84 7.79 S. U. 10/06/15 7.27 7.37 7.34 7.62 7.19 S. U. 04/18/16 7.57 7.68 7.56 7.29 7.39 S. U. 09/26/16 7.22 6.75 7.21 7.30 7.34 S. U. 04/25/17 7.41 7.40 7.14 7.28 7.22 S. U. 10/17/17 7.38 6.88 7.07 7.45 7.94 S. U. 04/16/18 7.48 7.38 7.42 7.67 7.38 S. U. 10/16/18 7.49 8.01 7.50 7.43 7.40 S. U. 04/12/19 7.07 6.50 7.69 7.28 7.50 S. U. 10/08/19 7.56 7.07 7.54 7.42 7.50 S. U. 04/20/20 8.00 7.40 7.72 7.88 7.57 Specific Conductance (Field) US/cm 03/25/99 347 155 309 -- -- US/cm 09/23/99 811 123 487 -- -- US/cm 03/27/00 417 186 363 318 315 US/cm 09/13/00 303 233 ND 471 438 US/cm 03/12/01 6919 6145 6145 6393 5960 US/cm 09/13/01 6919 7324 6063 6393 5960 US/cm 03/07/02 420 377 577 561 555 US/cm 09/18/02 248 271 -- 449 469 US/cm 04/15/03 74 254 261 345 325 US/cm 10/15/03 215 256 357 334 340 US/cm 03/24/04 293 253 410 378 379 US/cm 09/22/04 242 223 234 424 1 US/cm 05/10/05 283 271 391 387 390 US/cm 10/11/05 167 215 319 264 269 US/cm 04/24/06 195 182 335 286 404 US/cm 10/16/06 -- -- -- -- -- US/cm 04/10/07 31.9 28.9 43.6 42.9 43.5 US/cm 09/25/07 31.0 13.0 57.0 53.0 54.0 US/cm 05/02/08 -- -- -- -- -- US/cm 12/05/08 -- 31.6 32.6 31.1 29.1 US/cm 04/16/09 -- 19.8 23.8 26.5 24.9 US/cm 10/07/09 -- -- -- -- -- US/cm 04/28/10 -- -- -- -- -- US/cm 10/05/10 -- 27.9 54 38.9 35.7 US/cm 05/10/11 256 209 345 412 405 US/cm 10/06/11 309 218 529 462 446 US/cm 04/16/12 -- -- -- -- -- US/cm 10/24/12 -- -- -- -- -- US/cm 04/24/13 237 242 381 362 380 US/cm 09/09/13 327 266 461 439 448 US/cm 04/22/14 337 275 430 375 420 US/cm 10/01/14 276 228 454 444 441 US/cm 04/07/15 318 255 400 378 423 US/cm 10/06/15 229 151 337 299 284 US/cm 04/18/16 254 183 313 307 300 US/cm 09/26/16 293 214 439 412 427 US/cm 04/25/17 211 198 318 272 1272 US/cm 10/17/17 209 171 211 241 263 US/cm 04/16/18 233 215 234 217 227 us/cm 10/16/18 191 264 159 209 254 us/cm 04/12/19 129 210 158 270 248 us/cm 10/08/19 308 219 290 320 325 US/cm 04/20/20 189 212 194 192 197 i* GOLDER 1 of 2 July 2020 19131339.101 TABLE 7 Summary of Surface Water Field Parameters Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points Sample Date (SW Standard) Units SW-1 SW-2 SW-3 SW-4 SW-5 Temperature (Field) °C 03/25/99 11.81 11.22 13.86 -- -- °C 09/23/99 18.45 17.18 21.83 -- -- °C 03/27/00 14.85 15.73 17.17 15.53 14.29 °C 09/13/00 25.27 23.45 -- 24.96 25.53 °C 03/12/01 14.86 16.71 16.71 15.51 16.52 °C 09/13/01 14.86 16.65 16.74 15.51 16.52 °C 03/07/02 12.12 13.02 16.45 14.40 13.20 °C 09/18/02 18.66 16.70 -- 19.05 18.96 °C 04/15/03 21.65 22.24 20.92 20.11 17.23 °C 10/15/03 17.39 18.39 20.06 18.45 20.33 °C 03/24/04 16.00 18.06 17.17 15.83 17.22 °C 09/22/04 22.67 21.95 25.28 24.17 22.95 °C 05/10/05 24.09 22.85 23.97 23.69 21.78 °C 10/11 /05 18.60 18.30 20.60 20.00 19.80 °C 04/24/06 18.30 16.26 18.47 19.05 22.24 °C 10/ 16/06 -- -- -- -- -- °C 04/10/07 10.55 8.05 12.20 14.82 13.49 °C 09/25/07 17.06 21.61 23.84 18.61 19.48 °C 05/02/08 -- -- -- -- -- °C 12/05/08 -- 7.00 11.30 9.50 8.80 °C 04/16/09 -- 12.20 14.30 14.50 13.20 °C 10/07/09 -- -- -- -- -- °C 04/28/ 10 -- -- -- -- -- °C 10/05/ 10 -- -- -- -- -- °C 05/10/11 19.10 17.50 19.30 19.40 19.50 °C 10/06/11 16.16 13.10 19.10 17.80 18.67 °C 04/ 16/ 12 -- -- -- -- -- °C 10/24/ 12 -- -- -- -- -- °C 04/24/13 16.35 14.24 17.40 16.28 16.20 °C 09/09/13 24.70 22.80 25.50 24.80 25.00 °C 04/22/14 15.70 12.90 16.80 17.70 15.30 °C 10/01 /14 19.33 19.21 21.28 19.92 22.08 °C 04/07/15 17.50 16.70 18.50 17.90 16.00 °C 10/06/15 18.76 17.11 21.82 20.90 19.20 °C 04/18/16 18.85 18.38 19.83 19.23 18.57 °C 09/26/16 21.60 20.60 23.80 22.50 22.60 °C 04/25/17 21.17 19.60 20.20 20.56 10.05 °C 10/17/17 15.42 15.62 11.55 16.71 16.86 °C 04/16/18 11.75 9.66 8.67 12.24 12.24 °C 10/16/18 14.7 14.9 14.9 13.2 19.8 °C 04/12/19 17.4 15.7 19.1 17.5 19.3 °C 10/08/19 20.0 18.6 19.7 19.8 21.1 °C 04/20/20 16.8 15.7 16.4 15.5 15.3 Turbidity (Field) NTU 04/25/17 13.9 7.05 96.5 14.7 9.02 NTU 10/17/17 5.89 2.71 73.8 8.40 5.78 NTU 04/16/18 13.9 12.5 14.6 26.3 22.4 NTU 10/16/18 4.94 4.84 3.77 9.87 5.30 NTU 04/12/19 4.04 26.1 16.5 5.24 7.97 NTU 10/08/19 4.28 3.84 3.61 4.98 3.90 NTU 04/20/20 8.23 3.59 9.71 25.4 9.88 Oxidation Reduction Potential (fielc my 04/25/17 69.8 50.6 72.3 79.4 77.3 my 10/17/17 81.7 60.9 174.0 81.3 10.7 my 04/16/18 119.5 95.2 202.0 190.5 115.8 my 10/16/18 115.1 61.7 97.2 143.1 7.9 my 04/12/19 124.5 143.2 5.3 101.8 332.5 my 10/08/19 137.1 17.2 179.6 159.5 170.9 my 04/20/20 179.1 7.7 117.5 144.2 77.8 Dissolved Oxygen (field) mg/L 04/25/17 7.22 7.50 7.44 6.91 7.02 mg/L 10/17/17 8.33 8.08 8.37 8.01 6.90 mg/L 04/16/18 8.01 8.97 7.92 7.18 8.13 mg/L 10/16/18 5.95 10.74 6.99 7.06 5.81 mg/L 04/12/19 6.91 7.94 6.73 7.19 9.47 mg/L 10/08/19 5.32 4.89 5.90 5.03 6.19 mg/L 04/20/20 9.06 9.38 9.07 7.65 7.07 Notes: S.U. = Standard Units NTU = Nephelometric Turbidity Units uS/cm = microsiemens per centimeter mg/L = milligramer per liter -- = no data available Data prior to April 2017 provided by S&ME Engineering i* GOLDER 2 of 2 Figures 3 LY c� co a N 00 00 a N V E m z FL N_ L _N Q a U g 3 0 Q E Y 0 U a SW-3 LOCATED —1600 FT. WEST —49UU F I . VVE6 I SW-2 LOCATED —500 FT. WEST CLIENT CITY OF GREENSBORO CONSULTANT MSW LANDFILL LIMITS OF WASTE YYYY-M M-D D DESIGNED LD E R PREPARED REVIEWED GOLDER ASSOCIATES NC, INC APPROVED SW-4 LOCATED —900 FT. EAST 2020-06-12 NTT HAC DYR RPK LEGEND O O �-1 NM PL SURFACE WATER MONITORING POINT COMPLIANCE GROUNDWATER MONITORING WELL NES / SENTINEL GROUNDWATER MONITORING WELL NONCOMPLIANCE GROUNDWATER MONITORING WELL LEACHATE SAMPLING LOCATION GROUNDWATER SURFACE CONTOUR APPROXIMATE GROUNDWATER FLOW SEGMENT USED TO CALCULATE GRADIENT NOT MEASURED STREAMS MINOR CONTOURS (2 FT. INTERVAL) MAJOR CONTOURS (10 FT. INTERVAL) APPROXIMATE LIMITS OF WASTE APPROXIMATE PROPERTY LINE NOTES 1. TOPOGRAPHIC CONTOUR INTERVAL = 10 FEET. 2. GROUNDWATER SURFACE CONTOUR INTERVAL = 2 FEET. 3. GROUNDWATER ELEVATIONS MEASURED ON APRIL 20-22, 2020. 4. GROUNDWATER CONTOURS ARE BASED ON LINEAR INTERPOLATION BETWEEN AND EXTRAPOLATION FROM KNOWN DATA, TOPOGRAPHIC CONTOURS, AND KNOWN FIELD CONDITIONS. THEREFORE, GROUNDWATER CONTOURS MAY NOT REFLECT ACTUAL GROUNDWATER CONDITIONS. 5. GROUNDWATER CONTOUR LINES SHOW THE WATER TABLE SHAPE AND ELEVATION. THESE CONTOURS ARE INFERRED LINES FOLLOWING THE GROUNDWATER SURFACE AT A CONSTANT ELEVATION ABOVE SEA LEVEL. THE GROUNDWATER FLOW DIRECTION IS GENERALLY PERPENDICULAR TO THE GROUNDWATER SURFACE CONTOURS, SIMILAR TO THE RELATIONSHIP BETWEEN SURFACE WATER FLOW AND TOPOGRAPHIC CONTOURS. 6. ELEVATIONS SHOWN IN THIS DRAWING ARE IN FEET ABOVE MEAN SEA LEVEL DATUM ("MEAN SEA LEVEL DATUM" REFERS TO THE NATIONAL GEOTETIC VERTICAL DATUM (NGVD) OF 1929) AND COORDINATES ARE EXPRESSED IN TERMS OF THE STATE PLANE COORDINATE SYSTEM. 7. SURFACE WATER LOCATIONS ARE APPROXIMATE. 8. TOPOGRAPHY PROVIDED BY BRADY SURVEYING CO. FROM AERIAL PHOTOGRAPHY DATED NOVEMBER 9, 1994 FACILITY AREA UPDATED MAY 18, 1996. 9. 7.5 MINUTE USGS QUADRANGLE, MCLEANSVILLE, NORTH CAROLINA, 2016. r, \ If , Jk SITE LOCATION MAP NOT TO SCALE 0 400 800 1" = 400' FEET PROJECT WHITE STREET LANDFILL CITY OF GREENSBORO GREENSBORO, NORTH CAROLINA TITLE GROUNDWATER SURFACE CONTOUR MAP APRIL 20-22, 2020 PROJECT NO. PHASE FIGURE 19131339 101 0 L c L c L L C L r c F L L C L F C LEGEND ❑ SW-1 SURFACE WATER MONITORING POINT ,ate' '�1.''•.. � _ r sri CLIENT CITY OF GREENSBORO 6, ULJIUN CU xr GO L D E R PREPARED SEP REVIEWED DYR GOLDER ASSOCIATES NC, INC. APPROVED RPK 1 NOTES 1. SURFACE WATER LOCATIONS ARE APPROXIMATE. 2. 7.5 MINUTE USGS QUADRANGLE, MCLEANSVILLE, NORTH CAROLINA, 2016. SITE LOCATION MAP NOT TO SCALE o 0 0 1500 3000 1" = 1500' FEET PROJECT WHITE STREET LANDFILL CITY OF GREENSBORO GREENSBORO, NORTH CAROLINA TITLE SURFACE WATER LOCATION MAP PROJECT NO. FIGURE 166842117 0 2 APPENDIX A Groundwater and Surface Water Sampling Logs V GOLDER Project Name: White Street Landfill Well ID: ZC- 1 Well Diameter: Depth to Bottom: Pumping Rate: Equipment: 2 inches 26 • feet So mL/min. DATE: Y- 2 2 -Ze, Z U GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): T. Martinez Initial Depth to Water: 5,,Y,6 feet Water Column Thickness: i 0.'7 4 feet System Volume: Cl bc; m L Turbidimeter. YSI Pro Plus. WL Meter Dedicated Bladder Pump, MP-15 Sp. Cond. Dis 02 Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purge at 12 2 e Signature: QA/QC Sign Off: Date: t-1- 2 2 _ Lc; 7 Date: 25 - Z d Zcj GOLDER Project Name: White Street Landfill Well ID: 'JL -2. Well Diameter: 2 inches Depth to Bottom: 25,a7 feet Pumping Rate: mL/min. DATE: A-Z(- ?_a'?_a GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): N. Tejeda-Torres Initial Depth to Water: feet Water Column Thickness: feet System Volume: ['�72-z Equipment: Turbidimeter, YS/ ProPlus, WL Meter Dedicated Bladder Puma. MP-15 ® ® , ', • 0ZAir" �■� �� Comments (weather conditions, color, type of sample, purge -water management, etc.): Be in ur a at Signature: Date: QA/QC SiQry : ram_ i_Z f Date: '6 -.'-?_ y ze 2e GOLDER Project Name: White Street Landfill Well ID: =-3 Well Diameter: 2 inches Depth to Bottom: 32 _ (�, feet Pumping Rate: ,e+5 mL/min. DATE: 4 - Zt GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): N. Tejeda-Torres Initial Depth to Water: 15, 38 feet Water Column Thickness:y:?-.21 feet System Volume: H58 Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated Bladder Pump, MP-15 ® . ® Dis• ' • _------- Comments (weather conditions, color, type of sample, purge -water management, etc.): Beain aurae at 13':�11 - Signature: Date: �- Zl - tom GOLDER Project Name: White Street Landfill Well ID: 2:- 3 13 Well Diameter: 2 inches Depth to Bottom: 25 o feet Pumping Rate: ROO mL/min. DATE: 4 -z(- 202 0 GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): N. Tejeda-Torres Initial Depth to Water: 13.17- feet Water Column Thickness: feet System Volume: rV% Equipment: Turbidimeter, YSI Pro Plus, WL Meter Dedicated Bladder Pump, MP-15 ®Sp. Cond. ® ' , • • Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purge at (21(� v w u 10,111 Signature: Z/,Date: 4 - ZI - Z O 2 cJ QA/QC Signplff: 40--.Z j 1 L & Date: 4, ? . 2 c.,1,c GOLDER Project Name: White Street Landfill Well ID: "Z-4A Well Diameter: 2 inches Depth to Bottom: 25.0 feet Pumping Rate: 216 mL/min DATE: 4-2l - 2370 GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): N. Tejeda-Torres Initial Depth to Water:, ej d feet Water Column Thickness: j LU feet System Volume: [ Zi; Equipment: Turbidimeter, YSI Pro Plus, WL Meter Dedicated Bladder Pump, MP-15 ® ® ' , • •-� Comments (weather conditions, color, type of sample, purge -water management, etc.): Be in purge at 1(2_5 QA wi W1; Signature: Date: q'Zt—q-02o QA/QC S Date: cr L S---ZW .i 14> GOLDER Project Name: White Street Landfill Well ID: -5 Well Diameter: 2 inches Depth to Bottom: (q.6 feet Pumping Rate: 150 —fit mL/min. DATE: 4- 2 - Z-0Ze) GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): N. Tejeda-Torres Initial Depth to Water: (6.01 feet Water Column Thickness: c�aq feet System Volume: I U3a Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated Bladder Pump, MP-15 Time pH (S.U.) Sp. Cond. (US/cm) Turb (NTU) Dis 02 (mg/L) Temp. (°C) ORP (millivolts) DTW (feet) 34 ��5 5 .� l�. \ 2. t3 '�� . � •cam �t3b �i 33i; _.L )3 S 6.5" 2A3.0 2-4-3 1-31 13.E --4.OG G150 ,3 2q . 3 i . 32 13 : 6 .Oct �s 01 3 2Z. e 1. z.0 r �f . a 652 14,. 22• .tj 3. 33 IOn 5 3101.. 0 23A 1.00 13- 4 1000 21.3 25 ti 13. its i� .5l 33,E —4 W. 0 (0 CV 3qq. v3y o•q2 13. 5 16 t (0. I 14, 0. 13. . io 2 2 2 3 Z 3 . b. qo tw o .viJ 31.9b 3 p.�2 4.v h5§6 a .tZia Io30 _ fib. fo o. 4.0 t -21- -52 3W 1.0 3 3.1 6. 3 14.0 01- ZS U 5"L .3 3 t). ( 01% 14.1 :3 Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purge at q3u Signature: Date: QA/QC Si Date: 6, . •, 5...'e2'61 > GOLDER Project Name: White Street Landfill Well ID: -tL - 6- Well Diameter: 2 inches Depth to Bottom: 17 ,OU feet Pumping Rate: 100 mL/min. DATE: U`Z2-ZtlZO GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): T. Martinez Initial Depth to Water: 11.03 Water Column Thickness: --9 System Volume: eV0 m L Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated Bladder Puma. MP-15 feet feet Time pH (S.U.) Sp. Cond. (US/cm) Turb (NTU) Dis Oz (mg/L) Temp. VC) ORP (millivolts) DTW (feet) S G 3 6.0 ;i� �� s.� 1� i>C.c iJ �� 9 9 58, b. ► -361.1 3,2 7 13,3 717TO-011 -'-5 0g03 661 212.6 W. 6 3,22 13•t I-v.2 '2.0__S� pqo "/L, 2S?.0 17,5 3•►t 13.4 17C1.Z 7 S 0913 S. -23 - �.z o ,3.. »y. a Q 09 ly Z 2• S.z 3.Zo i3 N � 3• L/ 23 S 7G ?,q 13.v �,iy 13,Ll 1 ,� J303 cl2 1 ZICf. q IU. �.o�3.t 1 �0.� i3.3� Oct3 Iz 45.1 13.y Z.. zv 13.5 / 9.S /s-53 ti 3v23 . 37a 0tiu .�< Z53. 253 136 guy, �3.7� oFN 5".8 ? 4.d 15.6 7,7G )3,6 I .L1 131 7 Dq 5 5, 2 o TT `1 6 6 13. 01 Sly 2yy.7 Litt )3,6 074, 73. 7 03 9 0 3 t 'u1 1 2.S1 1?, 6 I I/.S U, U I00' S e13 - W5.1 16,5 Z. ► 3-2 i 01,-z 'y,63 101 5 � 35 .0 11.Ll Z. I 9-2, 1�•l.i/ .Cfy _-?7,5 U,k-1 2.zv LA�� 23 6.0,_ 4 5.0 `�.e 2.1`11 Lt. Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purge at Signature: QA/QC Sign Off: "��04 Date: 1 2 - 2, 26 Date: GOLDER Project Name: White Street Landfill Well ID: Ti - Well Diameter: 2 inches Depth to Bottom: 1 O) feet Pumping Rate: mL/min DATE.. q- 2 2 -2 G Z U GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): T. Martinez Initial Depth to Water: j 1, p 3 feet Water Column Thickness: 5.4 7 feet System Volume: ?do .r L Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated Bladder Pump, MP-15 Time pH (S.U.) Sp. Cond. (US/cm) Turb (NTU) Dis 02 (mg/L) Temp. VC) ORP (millivolts) DTW (feet) OZ�I�4D.7.Z9 z.i 13. 7E._> ILi.2 1033 06 '142.9 C(.55 Z 13 13 1y.2� D� -.0Cl 4o ''-.vl 13. .5 ,y 3 043 b-.►0 S20; 6 10.7 I.yy ►3,9 60'5 'y•3'Se 10 Li . 13 55�1.'-I 6 I , $6 3,�i s3- l y. 3 - 053 6.15 S7y_ Y.65 1 .`fS i To 77 iv.37 )1) 5Y 6 ,17 21. N.ct 1 ) .25 1q,0 4N,8 1 3 1 D" .1 656 8 .-78 IL1,Z 7,9,3 ILIA,/ II0 9 6.20 Cir U `7.55 1.-7 -7 1q.2 35.7 1q-v5 1113 3S -?. 5R 1 .-77 1 LI. ? 31, 0 1\I � '2 7, 75c, 7. 1 .1 1 1H.3 2 P.S i U,Nz 1 •- h Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purge at od L Z F 0/ L Z' Signature: QA/QC Sign Off: Date: H 'Z Z "Z4Z G Date: &-2.)5— 24U GOLDER Project Name: White Street Landfill Well ID: may- 4 Well Diameter: 2 inches Depth to Bottom: 127 .1.4t feet Pumping Rate: 150 mUmin. DATE: 4 -ZZ •- 2oz-o GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): N. Tejeda-Torres Initial Depth to Water: V4,3( feet Water Column Thickness: i-t 3Gt feet System Volume: 135( Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated Bladder Pump, MP-15 is .cm M ' , , • Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purge at q jq- K (a,-) C'Os Signature: QA/QC Sign Date: 'I - 2-2-102-0, Date: % 21S W-0 GOLDER Project Name: White Street Landfill Well ID: is Well Diameter: 2 inches Depth to Bottom: 103 - 5 feet Pumping Rate: �,ar mL/min. DATE: 4-ZA - ZUZ GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): N. Tejeda-Torres Initial Depth to Water: .4y feet Water Column Thickness: feet System Volume: 2116 Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated Bladder Pump, MP-15 ® ® Dis • • •'� Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purge at � . PA If '.-I AA4 W 1 IA A. . 1AA4n 1hC Signature: %L Date: 2-jao QA/QC Sign Off Date: b, 2AZ.4-zc V GOLDER Project Name: White Street Landfill Well ID: 31- Well Diameter: 2 inches Depth to Bottom: 3 O O feet Pumping Rate: Zoo mL/min. Equipment: Turbidimeter. YSI DATE: V- 2 / -Zc 20 GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): T. Martinez Initial Depth to Water: I c/ v feet Water Column Thickness: 2 6. i0 feet System Volume: 9& 1 ML_ WL Meter Dedicated Bladder Pump, MP-15 ®Sp. Cond. ® ' , is • •-• Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purge at iH 56 Signature: QA/QC Sign Off: Date: Lf,Zf-za2-6 Date: & - Z 57Z GOLDER DATE: q-'--ZZ zo?_0 GROUNDWATER SAMPLING LOG Project Name: w'okAz <4(2�A La nL Project No./Phase No.: Well ID: - q Sampler(s): '. e.(ed" --1R1 K _' Well Diameter: Z inches Initial Depth to Water: (O.S► feet Depth to Bottom: 26, 0o feet Water Column Thickness: �c:�f :'"ICt feet Pumping Rate: So mL/min. System Volume: ►ZH3 mL Equipment: TSy IN, Pl" Vhe_�f (r Sbllhsk mo's i 30 �'i c,'Ja : ,�, op- s FervoQs Time pH (S.U.) Sp. Cond. (US/cm) Turb (NTU) Dis 02 (mg`/L) Temp. (°C) ORP (millivolts) DTW (feet)( pp��., 1015 �- �� ( �� o09 ` 4(. E�r� zI 2— 10 CIO 7�rs�..F Z_3 104 5 C1 16► �6.2Y) 0 SSq. z i1.36 104-5) -5.9Z 3-�3 `� U.SO u 41•5 Comments (weather conditions, color, type of sample, purge -water management, etc.): Weather: Be in ur in �UlcA G.O Signature: Date: 4 -2-2- 2oLG QA/QC Sign Off: /' +` �/�/�4% Date: � . 4 - .Z,L; V GOLDER Project Name: White Street Landfill Well ID: IZ Well Diameter: 2 inches Depth to Bottom: feet Pumping Rate: too mL/min. DATE: C( Z / 2G2v GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): T. Martinez Initial Depth to Water: 0, 2 ? feet Water Column Thickness: 11,52 feet System Volume: P6 vkL Equipment: Turbidimeter, YSI Pro Plus, WL Meter Dedicated Bladder Pump, MP-15 Time pH (S.U.) Sp. Cond. (US/cm) Turb (NTU) Dis 02 (mg/L) Temp. VC) ORP (millivolts) DTW (feet) 00 5 b3-1 o.4 15-1 _Zz.s11,79 IbO5 b,W �3 Si, v.3 1 1 ,cT -Z o f 2-o l I I (> K 140 3 —L11 Lt 4 —7 O 1 ZC I lc�_ l _ 1> -7 5 1:;0 ib 15 k3 1 &.431 49J 1 U 13 f 6,u6 I b1f7 I 11,3 1 0.I0 1 1b,6 I --3J'.6 1 lb 25 to, LA e,5b 56.1 v-tl 16,5- - 3,5 12-4 v 666 33.5 -0-1 So G7 Lf _�I 0 6.51 0 -2--?, C, 0.0 °2 - 6 4 t-1.7 S -S 2 H , 0 ,6,9 fz. l a b -511 PIS 0.07 o -& 3,4 12-�� 000 i .'s 0.0 - 5 1 ?-00 705 b.SS 1 -7'2 v•6 15•5 ---2b-Lf 13-0 % 6.57 -7 15.7 0 .b I 173,0 130 5 6.5 '7l 15, 0 .a 1 .40 ma Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purge at 65 Signature: GCi Date: 2-1 ZG 26 QA/QC Sign Off: Date: --2.e-24 GOLDER Project Name: White Street Landfill Well ID: M w -1 ' Well Diameter: 2 inches Depth to Bottom: feet Pumping Rate: 25 mL/min. Equipment: Turbidimeter, YSI l Dedicated Bladder DATE: q-Z(�-Z(_Zo GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): T. Martinez Initial Depth to Water: I , ?'Y feet Water Column Thickness: i S . E 2 feet System Volume: / J 7 mL , WL Meter MP-15 Time pH (S.U.) Sp. Cond. (US/cm) Turb (NTU) Dis 02 (mg/L) Temp. (°C) ORP (millivolts) DTW (feet) 15. I 54 1b1�-I (J•5i LI �I3,� 1SZ ��Ci iS,4 �-7 /�i.�G 1 2.2, 6 4 ? '`I Z- S D 1 S ,2 1 Z(, .Hl BIZ\A.0 I.3� ,M 15'Z 51 Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purge at j 60 S Signature: Date: y " Z� "Z� 2 O QA/QC Sign Off: �� ,,z yi )r �,, J Date: %;'r GOLDER Project Name: White Street Landfill Well ID: K") - 14 Well Diameter: 2 inches Depth to Bottom: c��.�2 feet Pumping Rate: mL/min. Equipment: Turbidimeter, YSI I Dedicated Bladder DATE: q ?A ZCFzo GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): N. Tejeda-Torres Initial Depth to Water: L3,(,;,I feet Water Column Thickness: 2� ,`� 1 feet System Volume: WL Meter I M, ® Sp. Cond. ® , is • ' •-• i'er w4al Fm � M 0 fl • MO NOW" ZEN ------ Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purge at R32 WeAt s IF T4 Z_� Signature: �/ _�-- Date: 4— Zy — 2dzd QA/QC Sign 0 � Date: 4 - 2.,C 2%g, GOLDER Project Name: White Street Landfill Well ID: Well Diameter: 2 inches Depth to Bottom: Ig. feet Pumping Rate: mL/min. DATE: 4-zZ -787,c GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): N. Tejeda-Torres Initial Depth to Water: ."gyp feet Water Column Thickness: �0.� feet System Volume: Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated Bladder Pump, MP-15 ® ® Dis • ' •Iff Comments (weather conditions, color, type of sample, purge -water management, etc.): 11 .. 6 15 :emu' GOLDER Project Name: Wl t 11 Well ID: StAW.. Well Diameter: 2 inches Depth to Bottom: 22.Gv feet Pumping Rate: ( -pr - -o Zs.0 mL/min. Equipment: 0AAL0 DATE: 6 -ZZ_20_1AD GROUNDWATER SAMPLING LOG Project No./Phase No.: M 1' 1' I (o l Sampler(s): Tz12c� Initial Depth to Water: 10.2A feet Water Column Thickness: 4.101 feet System Volume: ►, 2-q3 mL Time pH (S.U.) Sp. Cond. (US/cm) Turb (NTU) Dis 02 (mg/L) Temp. (°C) ORP (millivolts) DTW (feet) �22f 3 4q5 k LV 33 -h-3 12.E 1 1u.4� 2201 .3 4 430 K 0A, 14.6 5i�. L IC3-ci�i Z b �a "�V IS. , 0,31 I4-b d lo. 23 6-31� --23 141 o.2:3 14.4 3T5. C, (o. uv I ZA 1 b. 3-1 .-1'-� I Q 3 v . 30 IS.1 3R- (i� io. Si I2-45 (, .SCA '411 Z14 o 31 15. 4 4' v. 4D.4 ().,Is i4 5 si -ti ►a. (Z (� 34- 7-01..,+ �. Z2 i4.5 53.4 i. ►4 G.so !o c o.4 0.26 144 63.2 ,D +3W' C. ,5 10. 0.2. Comments (weather conditions, color, type of sample, purge -water management, etc.): Weather: ^Nu ! as 1-OS Begin purging S Z_Jq Fe -� (_(!�) mglr_ Signature: QA/QC Sign Off: /� Date: a - 22- 2>Jz Date: & Z;, •?z, V GOLDER Project Name: White Street Landfill Well ID: Well Diameter: 2 inches Depth to Bottom: 3 - `i 6> feet Pumping Rate: kso mL/min. DATE: Lii . 2 2- 2 (,2 G GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): T. Martinez Initial Depth to Water: "�� 7.3S feet Water Column Thickness: 16,55 feet System Volume: PSC) ti, L Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated Bladder Pump, MP-15 ® ® , ' • •.• Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purge at Signature: f Date: 4 QA/QC Sign Off: �/ c� �.� Date: GOLDER DATE: L1 - Z 2 %26 SURFACE WATER SAMPLING LOG Project Name: White Street LF Project No./Phase No.: 1668421 Sample ID: St,v - 1 Sampler(s): f/,7r,76A --lb(ycs f LL 1144o" Sampling Location: n-f n* Gmss'!!Y,AVC Equipment: YSI, Turbidimeter Time 1r 5 3 pH S.U. �' O Sp. Cond. US/cm Turb. ntu Dis. OZ mg/L / , b b Temp. 'C ORP my x Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: Date: QA/QC Sign Off: Date: 6. -5- Urz,c; GOLDER DATE: `I - ZZ - 2& Z , SURFACE WATER SAMPLING LOG Project Name: White Street LF Project No./Phase No.: 1668421 Sample ID: Sw - Z Sampler(s): j = M��1.�c 2 , ?� fedti - 73M S Sampling Location: Ord. S,-A o f Sr Equipment: YSI, Turbidimeter Time I Lf 5 Z pH SM. Sp. Cond. us/cm 2(Z Turb. ntu Dis.02 mg/L 3� Temp. °C ORP my -7, -7 Surface Water Sampling Location Sketch I r y- Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QA/QC Sign Off: Date: U1-2-2 -Zo2G Date: & . z5 ~ 2.�, GOLDER DATE: K Z ZG 2 a SURFACE WATER SAMPLING LOG Project Name: White Street LF Project No./Phase No.: 1668421 Sample ID: >In. -3 Sampler(s): j-M11r),,eZ Sampling Location: A&,r flaI76th , U fKfirAm of Equipment: YSI, Turbidimeter J3&-�,,bk bvt,yer Time I S 15 pH S.U. 7-72 Sp. Cond. us/cm 114,3 Turb. ntu G -1 1 t Dis. O2 mg/L c(` o Temp. oC ) b -4 ORP my 17.5 N_ 7-e; Pis - Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: Date: 4-22-2o2-6 QA/QC Sign Off: Date: & -L-52.6�z4 COLDER DATE: 1-1-22-202 c SURFACE WATER SAMPLING LOG Project Name: White Street LF Project No./Phase No.: 1668421 Sample ID: &Lv - `f Sampler(s): IV- 'Ttyedy Sampling Location: e,Sf S-* f-- . M:li Rd Equipment: YSI, Turbidimeter Time t 600 pH SM.7,$e Sp. Cond. US/cm (� 5 Turb. ntu 2-5 y Dis. 02 mg/L 7 6S Temp. 'C 1 S ORP my Surface Water Sampling Location Sketch i rt� bv�, k Sfi L Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QA/QC Sign Off: Date: LI-2-2 Date: GOLDER DATE: -22-2c,26 SURFACE WATER SAMPLING LOG Project Name: White Street LF Project No./Phase No.: 1668421 Sample ID: SLV - 5 Sampler(s): j _ Mtiff,vle Z Sampling Location: Equipment: YSI, Turbidimeter Time i335 pH S.U. �� 5 7 Sp. Cond. us/cm `� 7 Turb. ntu a Dis.02 mg/L /07 Temp. C S ORP my .7-1 Surface Water Sampling Location Sketch f/0 v Comments (sample methodology, weather conditions, color, silt, etc.): Signature: ` QA/QC Sign Off: �Y-�iiwc �..� �G✓w N L-2Z -2c2c Date: Date:" l�� APPENDIX B April 2020 Groundwater Certificates -of -Analysis, Chain -of - Custody Forms and Laboratory Data Reviews ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Wednesday, June 17, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.107, Project Name/Desc: White Street LF-Phase II ENCO Workorder(s): CDO5204 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Wednesday, April 22, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Daniel B. Mays Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of 37 PROJECT NARRATIVE Date: 17 June 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase II Lab ID: CD05204 Overview (� �Eo www.encolabs.com This report is an amendment to the original report dated May 8, 2020 for this work order. This report was revised, at the client's request, to only report selenium by EPA method 601 OD. Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples Exception QM-11 was appened to sample MSD1 for 1,1-Dichloroethene because the precision between duplicate matrix spikes of the same sample was outside acceptable limits. QV-01 was appended to samples 4103-112, 4103-113, 4103-114A, 4104-115, 4103-117B, 4103-118, 4103-1112, 4103-Dublicate 11, and 4103-Trip Blank 3 for analyses Bromochloromethane, Dibromomethane, and Iodomethane because the associated continuing calibration verification standard exhibited high bias, since the result is non -detect, there is no impact. Quality Control Remarks No Comments Other Comments The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Daniel Mays Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of 37 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-II2 Lab ID: CDO5204-01 Sampled: 04/21/20 15:29 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/23/20 09:57 05/04/20 15:09 EPA 6020E EPA 3005A 10/18/20 04/24/20 10:28 04/28/20 12:40 EPA 8260D EPA 503013_MS 05/05/20 04/24/20 00:00 04/24/20 15:48 EPA 8260D EPA 503013_MS 05/05/20 04/29/20 16:45 05/01/20 08:03 Client ID: 4103-II3 Lab ID: CDO5204-02 Sampled: 04/21/20 14:16 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/23/20 09:57 05/04/20 15:12 EPA 6020E EPA 3005A 10/18/20 04/24/20 10:28 04/28/20 12:44 EPA 8260D EPA 503013_MS O5/05/20 04/24/20 00:00 04/24/20 16:13 EPA 8260D EPA 503013_MS 05/05/20 04/29/20 16:45 05/01/20 08:35 Client ID: 4303-II4A Lab ID: CDO5204-03 Sampled: 04/21/20 11:46 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/23/20 09:57 05/04/20 15:14 EPA 6020B EPA 3005A 10/18/20 04/24/20 10:28 04/28/20 12:48 EPA 8260D EPA 503013_MS 05/05/20 04/24/20 00:00 04/24/20 16:39 EPA 8260D EPA 5030B_MS 05/05/20 04/29/20 16:45 05/01/20 09:08 Client ID: 4103-II15 Lab ID: CDO5204-04 Sampled: 04/21/20 10:38 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/23/20 09:57 05/04/20 15:17 EPA 6020B EPA 3005A 10/18/20 04/24/20 10:28 04/28/20 12:53 EPA 8260D EPA 503013_MS 05/05/20 04/29/20 16:45 05/01/20 09:40 Client ID: 4103-II15 Lab ID: CD05204-04RE1 Sampled: 04/21/20 10:38 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/05/20 04/27/20 00:00 04/27/20 11:33 Client ID: 4303-II7B Lab ID: CDO5204-05 Sampled: 04/21/20 17:33 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(sl Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/23/20 09:57 05/04/20 15:19 EPA 6020E EPA 3005A 10/18/20 04/24/20 10:28 04/28/20 12:57 EPA 8260D EPA 503013_MS O5/05/20 04/24/20 00:00 04/24/20 17:30 EPA 8260D EPA 503013_MS 05/05/20 04/29/20 16:45 05/01/20 10:12 Client ID: 4103-II8 Lab ID: CDO5204-06 Sampled: 04/21/20 15:13 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/23/20 09:57 05/04/20 15:21 EPA 6020E EPA 3005A 10/18/20 04/24/20 10:28 04/28/20 13:01 EPA 8260D EPA 503013_MS 05/05/20 04/29/20 16:45 05/01/20 10:44 Client ID: 4103-II8 Lab ID: CD05204-06RE1 Sampled: 04/21/20 15:13 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 5030B_MS 05/05/20 04/27/20 00:00 04/27/20 18:23 Client ID: 4103-II12 Lab ID: CDO5204-07 Sampled: 04/21/20 17:20 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/23/20 09:57 05/04/20 15:30 EPA 6020E EPA 3005A 10/18/20 04/24/20 10:28 04/28/20 13:05 EPA 8260D EPA 503013_MS 05/05/20 04/29/20 16:45 05/01/20 11:17 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 37 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-II12 Lab ID: CD05204-07RE3 Sampled: 04/21/20 17:20 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS O5/05/20 04/27/20 00:00 04/27/20 11:59 Client ID: 4103-MW-14 Lab ID: CDO5204-08 Sampled: 04/21/20 08:46 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/23/20 09:57 05/04/20 15:32 EPA 6020E EPA 3005A 10/18/20 04/24/20 10:28 04/28/20 13:10 EPA 8260D EPA 503013_MS 05/05/20 04/24/20 00:00 04/24/20 18:47 EPA 8260D EPA 503013_MS 05/05/20 04/29/20 16:44 04/30/20 19:08 Client ID: 4303-Duplicate II Lab ID: CDO5204-09 Sampled: 04/21/20 08:46 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/23/20 09:57 05/04/20 15:34 EPA 6020E EPA 3005A 10/18/20 04/24/20 10:28 04/28/20 13:14 EPA 8260D EPA 503013_MS O5/05/20 04/29/20 16:44 04/30/20 19:40 Client ID: 4303-Duplicate II Lab ID: CD05204-09RE1 Sampled: 04/21/20 08:46 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/05/20 04/27/20 00:00 04/27/20 18:48 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 37 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4103-II2 Lab ID: CDO5204-01 Analvte Results Flag MDL Q Units Method Notes 1,1-Dichloroethane 4.0 0.13 1.0 ug/L EPA 8260D 1,4-Dichlorobenzene 2.5 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 2.5 0.80 2.0 ug/L EPA 8260D Barium - Total 68.3 1.10 10.0 ug/L EPA 6010D Chlorobenzene 0.63 J 0.17 1.0 ug/L EPA 8260D cis-1,2-Dichloroethene 9.3 0.15 1.0 ug/L EPA 8260D Copper - Total 2.86 J 1.60 10.0 ug/L EPA 6010D Vanadium - Total 1.79 J 1.40 10.0 ug/L EPA 6010D Vinyl chloride 1.3 0.32 1.0 ug/L EPA 8260D Zinc - Total 4.71 J 4.40 10.0 ug/L EPA 6010D Client ID: 4103-II3 Lab ID: CDO5204-02 Analvte Results Flag MDL Q Units Method Notes 1,1-Dichloroethane 3.8 0.13 1.0 ug/L EPA 8260D 1,4-Dioxane 1.0 J 0.80 2.0 ug/L EPA 8260D Barium - Total 188 1.10 10.0 ug/L EPA 6010D Benzene 0.62 J 0.15 1.0 ug/L EPA 8260D Chromium - Total 4.38 J 1.40 10.0 ug/L EPA 6010D cis-1,2-Dichloroethene 0.62 J 0.15 1.0 ug/L EPA 8260D Cobalt - Total 5.62 J 1.40 10.0 ug/L EPA 6010D Copper - Total 2.44 J 1.60 10.0 ug/L EPA 6010D Nickel - Total 8.21 J 2.20 10.0 ug/L EPA 6010D Vanadium - Total 1.81 J 1.40 10.0 ug/L EPA 6010D Client ID: 4303-II4A Lab ID: CDO5204-03 Analvte Results Flag MDL Q Units Method Notes 1,4-Dichlorobenzene 0.76 J 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 69 0.80 2.0 ug/L EPA 8260D Barium - Total 160 1.10 10.0 ug/L EPA 6010D Chlorobenzene 2.5 0.17 1.0 ug/L EPA 8260D cis-1,2-Dichloroethene 0.56 J 0.15 1.0 ug/L EPA 8260D Copper - Total 2.78 J 1.60 10.0 ug/L EPA 6010D Nickel - Total 42.2 2.20 10.0 ug/L EPA 6010D Styrene 0.49 J 0.11 1.0 ug/L EPA 8260D Vanadium - Total 3.09 J 1.40 10.0 ug/L EPA 6010D Client ID: 4103-II15 Lab ID: CDO5204-04 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 124 1.10 10.0 ug/L EPA 6010D Chromium - Total 1.56 J 1.40 10.0 ug/L EPA 6010D Cobalt - Total 8.99 J 1.40 10.0 ug/L EPA 6010D Copper - Total 2.24 J 1.60 10.0 ug/L EPA 6010D Nickel - Total 3.94 J 2.20 10.0 ug/L EPA 6010D Vanadium - Total 2.56 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 17.1 4.40 10.0 ug/L EPA 6010D Client ID: 4103-II15 Lab ID: CD05204-04RE1 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 3.2 0.80 2.0 uq/L EPA 8260D Client ID: 4303-II7B Lab ID: CDO5204-05 Analvte Results Flag MDL PQL Units Method Notes 1,1-Dichloroethane 1.4 0.13 1.0 ug/L EPA 8260D 1,4-Dioxane 1.1 J 0.80 2.0 ug/L EPA 8260D Barium - Total 36.4 1.10 10.0 ug/L EPA 6010D Copper - Total 1.91 J 1.60 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Pager) Of 37 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4103-II8 Lab ID: CDO5204-06 Analvte Results Flag MDL Q Units Method Notes Barium - Total 181 1.10 10.0 ug/L EPA 6010D Chlorobenzene 1.3 0.17 1.0 ug/L EPA 8260D Cobalt - Total 4.17 J 1.40 10.0 ug/L EPA 6010D Copper - Total 10.5 1.60 10.0 ug/L EPA 6010D Lead - Total 4.90 J 3.10 10.0 ug/L EPA 6010D Nickel - Total 98.5 2.20 10.0 ug/L EPA 6010D Tetrahydrofuran 16 0.53 1.0 ug/L EPA 8260D Vanadium - Total 3.66 J 1.40 10.0 ug/L EPA 6010D Client ID: 4103-II8 Lab ID: CDO5204-06RE1 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 310 D 16 40 ug/L EPA 8260D Client ID: 4103-II12 Lab ID: CDO5204-07 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 279 1.10 10.0 ug/L EPA 6010D Cadmium - Total 0.593 J 0.360 1.00 ug/L EPA 6010D Chromium - Total 1.75 J 1.40 10.0 ug/L EPA 6010D Cobalt - Total 2.19 J 1.40 10.0 ug/L EPA 6010D Nickel- Total 10.1 2.20 10.0 ug/L EPA 6010D Vanadium - Total 1.90 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 5.38 J 4.40 10.0 ug/L EPA 6010D Client ID: 4103-II12 Lab ID: CDO5204-07RE3 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 4.0 0.80 2.0 ug/L EPA 8260D Client ID: 4103-MW-14 Lab ID: CDO5204-08 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 16.8 1.10 10.0 ug/L EPA 6010D Chloroform 0.69 1 0.18 1.0 ug/L EPA 8260D Client ID: 4303-Duplicate II Lab ID: CDO5204-09 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 184 1.10 10.0 ug/L EPA 6010D Chlorobenzene 0.90 1 0.17 1.0 ug/L EPA 8260D Cobalt - Total 4.21 1 1.40 10.0 ug/L EPA 6010D Copper - Total 10.2 1.60 10.0 ug/L EPA 6010D Nickel - Total 99.3 2.20 10.0 ug/L EPA 6010D Vanadium - Total 3.64 J 1.40 10.0 ug/L EPA 6010D Client ID: 4303-Duplicate II Lab ID: CDO5204-09RE1 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 320 D 16 40 ug/L EPA 8260D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 37 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II2 Lab Sample ID:CDO5204-01 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 15:29 Work Order: CDO5204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 1,1,1-Trichloroethane [71-55-6]^ 0.12 U ug/L 1 0.12 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 U ug/L 1 0.28 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 1,1,2-Trichloroethane [79-00-5]^ 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 1,1-Dichloroethane [75-34-3]A 4.0 ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 1,4-Dichlorobenzene [306-46-7]^ 2.5 ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 2-Butanone [78-93-3]^ 1.3 U ug/L 1 1.3 5.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 2-Hexanone [591-78-6]^ 0.88 U ug/L 1 0.88 5.0 OD29043 EPA 8260D 05/01/20 08:03 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Acetone [67-64-1]^ 10 U ug/L 1 10 20 OD29043 EPA 8260D 05/01/20 08:03 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OD29043 EPA 8260D 05/01/20 08:03 CMK Benzene [71-43-2]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Bromochloromethane [74-97-5]^ 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Carbon disulfide [75-15-O]^ 1.5 U ug/L 1 1.5 5.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Chlorobenzene [308-90-7]A 0.63 J ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Chloroethane [75-00-3]^ 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK cis-1,2-Dichloroethene [156-59-2]A 9.3 ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK cis-1,3-Dichloropropene [10061-01-5]^ 0.20 U ug/L 1 0.20 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK QV-01 Ethylbenzene [100-41-4]^ 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OD29043 EPA 8260D 05/01/20 08:03 CMK QV-01 Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Styrene [100-42-5]^ 0.11 U ug/L 1 0.11 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Tetrachloroethene [127-18-4]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 OD29043 EPA 8260D 05/01/20 08:03 CMK Vinyl chloride [75-01-4]A 1.3 ug/L 1 0.32 1.0 OD29043 EPA 8260D 05/01/20 08:03 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 Of 37 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II2 Lab Sample ID:CD05204-01 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 15:29 Work Order: CD05204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OD29043 EPA 8260D 05/O1/20 08:03 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 91 % 53-136 OD29043 EPA 6260D 05101120 08:03 CMK Dibromofluoromethane 44 1 50.0 88 % 67-129 OD29043 EPA 6260D 05101120 08:03 CMK Toluene-d8 45 1 50.0 90 % 59-134 OD29043 EPA 6260D 05101120 08:03 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 12:40 RLF Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD23026 EPA 6010D 05/04/20 15:09 JDH Barium [7440-39-3]^ 68.3 ug/L 1 1.10 10.0 OD23026 EPA 6010D 05/04/20 15:09 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD23026 EPA 6010D 05/04/20 15:09 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD23026 EPA 6010D 05/04/20 15:09 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:09 JDH Cobalt [7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:09 JDH Copper[7440-50-8]^ 2.86 J ug/L 1 1.60 10.0 OD23026 EPA 6010D 05/04/20 15:09 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD23026 EPA 6010D 05/04/20 15:09 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD23026 EPA 6010D 05/04/20 15:09 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD23026 EPA 6010D 05/04/20 15:09 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD23026 EPA 6010D 05/04/20 15:09 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 12:40 RLF Vanadium [7440-62-2]^ 1.79 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:09 JDH Zinc[7440-66-6]^ 4.71 J ug/L 1 4.40 10.0 OD23026 EPA 6010D 05/04/20 15:09 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 2.5 ug/L 1 0.80 2.0 OD24032 EPA 8260D 04/24/20 15:48 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 4.9 1 5.00 99 % 75-125 OD24032 EPA 8260D 0412412015:48 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 37 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II3 Lab Sample ID:CDO5204-02 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 14:16 Work Order: CDO5204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 1,1,1-Trichloroethane [71-55-6]^ 0.12 U ug/L 1 0.12 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 U ug/L 1 0.28 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 1,1,2-Trichloroethane [79-00-5]^ 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 1,1-Dichloroethane [75-34-3]A 3.8 ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 2-Butanone [78-93-3]^ 1.3 U ug/L 1 1.3 5.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OD29043 EPA 8260D 05/01/20 08:35 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Acetone [67-64-1]^ 10 U ug/L 1 10 20 OD29043 EPA 8260D 05/01/20 08:35 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OD29043 EPA 8260D 05/01/20 08:35 CMK Benzene [71-43-2]A 0.62 J ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Bromochloromethane [74-97-5]^ 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Carbon disulfide [75-15-O]A 1.5 U ug/L 1 1.5 5.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Chlorobenzene [108-90-7]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK cis-1,2-Dichloroethene [156-59-2]A 0.62 J ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK QV-01 Ethylbenzene [100-41-4]^ 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OD29043 EPA 8260D 05/01/20 08:35 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Styrene [100-42-5]^ 0.11 U ug/L 1 0.11 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Tetrachloroethene [127-18-4]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK trans-1,3-Dichloropropene [10061-02-6]A 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 OD29043 EPA 8260D 05/01/20 08:35 CMK Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OD29043 EPA 8260D 05/01/20 08:35 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 Of 37 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II3 Lab Sample ID:CD05204-02 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 14:16 Work Order: CD05204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OD29043 EPA 8260D 05/O1/20 08:35 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 45 1 50.0 89 % 53-136 OD29043 EPA 6260D 05101120 08:35 CMK Dibromofluoromethane 43 1 50.0 86 % 67-129 OD29043 EPA 6260D 05101120 08:35 CMK Toluene-d8 44 1 50.0 89 % 59-134 OD29043 EPA 6260D 05101120 0835 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 12:44 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD23026 EPA 6010D 05/04/20 15:12 JDH Barium [7440-39-3]^ 188 ug/L 1 1.10 10.0 OD23026 EPA 6010D 05/04/20 15:12 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD23026 EPA 6010D 05/04/20 15:12 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD23026 EPA 6010D 05/04/20 15:12 JDH Chromium [7440-47-3]^ 4.38 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:12 JDH Cobalt[7440-48-4]A 5.62 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:12 JDH Copper[7440-50-8]^ 2.44 J ug/L 1 1.60 10.0 OD23026 EPA 6010D 05/04/20 15:12 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD23026 EPA 6010D 05/04/20 15:12 JDH Nickel[7440-02-O]^ 8.21 J ug/L 1 2.20 10.0 OD23026 EPA 6010D 05/04/20 15:12 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD23026 EPA 6010D 05/04/20 15:12 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD23026 EPA 6010D 05/04/20 15:12 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 12:44 RLF Vanadium [7440-62-2]^ 1.81 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:12 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD23026 EPA 6010D 05/04/20 15:12 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 1.0 J ug/L 1 0.80 2.0 OD24032 EPA 8260D 04/24/20 16:13 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 99 % 75-125 OD24032 EPA 8260D 0412412016:13 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 of 37 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II4A Lab Sample ID:CDO5204-03 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 11:46 Work Order: CDO5204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 1,1,1-Trichloroethane [71-55-6]^ 0.12 U ug/L 1 0.12 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 U ug/L 1 0.28 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 1,1,2-Trichloroethane [79-00-5]^ 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 1,4-Dichlorobenzene [306-46-7]^ 0.76 J ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 2-Butanone [78-93-3]^ 1.3 U ug/L 1 1.3 5.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 2-Hexanone [591-78-6]^ 0.88 U ug/L 1 0.88 5.0 OD29043 EPA 8260D 05/01/20 09:08 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Acetone [67-64-1]^ 10 U ug/L 1 10 20 OD29043 EPA 8260D 05/01/20 09:08 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OD29043 EPA 8260D 05/01/20 09:08 CMK Benzene [71-43-2]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Bromochloromethane [74-97-5]^ 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Carbon disulfide [75-15-O]^ 1.5 U ug/L 1 1.5 5.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Chlorobenzene [308-90-7]^ 2.5 ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Chloroethane [75-00-3]^ 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.56 J ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK cis-1,3-Dichloropropene [10061-01-5]^ 0.20 U ug/L 1 0.20 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK QV-01 Ethylbenzene [100-41-4]^ 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OD29043 EPA 8260D 05/01/20 09:08 CMK QV-01 Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Styrene [500-42-5]^ 0.49 J ug/L 1 0.11 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 OD29043 EPA 8260D 05/01/20 09:08 CMK Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 OD29043 EPA 8260D 05/01/20 09:08 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 37 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II4A Lab Sample ID:CD05204-03 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 11:46 Work Order: CD05204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OD29043 EPA 8260D 05/O1/20 09:08 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 95 % 53-136 OD29043 EPA 6260D 05101120 09:08 CMK Dibromofluoromethane 43 1 50.0 87 % 67-129 OD29043 EPA 6260D 05101120 09:08 CMK Toluene-d8 46 1 50.0 91 % 59-134 OD29043 EPA 6260D 05101120 09:08 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 12:48 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD23026 EPA 6010D 05/04/20 15:14 JDH Barium [7440-39-3]^ 160 ug/L 1 1.10 10.0 OD23026 EPA 6010D 05/04/20 15:14 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD23026 EPA 6010D 05/04/20 15:14 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD23026 EPA 6010D 05/04/20 15:14 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:14 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:14 JDH Copper[7440-50-8]^ 2.78 J ug/L 1 1.60 10.0 OD23026 EPA 6010D 05/04/20 15:14 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD23026 EPA 6010D 05/04/20 15:14 JDH Nickel[7440-02-O]^ 42.2 ug/L 1 2.20 10.0 OD23026 EPA 6010D 05/04/20 15:14 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD23026 EPA 6010D 05/04/20 15:14 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD23026 EPA 6010D 05/04/20 15:14 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 12:48 RLF Vanadium [7440-62-2]^ 3.09 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:14 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD23026 EPA 6010D 05/04/20 15:14 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 69 ug/L 1 0.80 2.0 OD24032 EPA 8260D 04/24/20 16:39 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 97 % 75-125 OD24032 EPA 8260D 041241201629 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 of 37 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II15 Lab Sample ID:CD05204-04 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 10:38 Work Order: CD05204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OD29043 EPA 8260D 05/01/20 09:40 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OD29043 EPA 8260D 05/01/20 09:40 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OD29043 EPA 8260D 05/01/20 09:40 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OD29043 EPA 8260D 05/01/20 09:40 CMK Benzene [71-43-2]A 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 09:40 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 Of 37 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II15 Lab Sample ID:CD05204-04 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 10:38 Work Order: CD05204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OD29043 EPA 8260D 05/O1/20 09:40 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 97 % 53-136 OD29043 EPA 6260D 05101120 09:40 CMK Dibromofluoromethane 44 1 50.0 88 % 67-129 OD29043 EPA 6260D 05101120 09:40 CMK Toluene-d8 45 1 50.0 90 % 59-134 OD29043 EPA 6260D 05101120 09:40 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 12:53 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD23026 EPA 6010D 05/04/20 15:17 JDH Barium [7440-39-3]^ 124 ug/L 1 1.10 10.0 OD23026 EPA 6010D 05/04/20 15:17 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD23026 EPA 6010D 05/04/20 15:17 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD23026 EPA 6010D 05/04/20 15:17 JDH Chromium [7440-47-3]^ 1.56 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:17 JDH Cobalt[7440-48-4]A 8.99 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:17 JDH Copper[7440-50-8]^ 2.24 J ug/L 1 1.60 10.0 OD23026 EPA 6010D 05/04/20 15:17 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD23026 EPA 6010D 05/04/20 15:17 JDH Nickel[7440-02-O]^ 3.94 J ug/L 1 2.20 10.0 OD23026 EPA 6010D 05/04/20 15:17 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD23026 EPA 6010D 05/04/20 15:17 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD23026 EPA 6010D 05/04/20 15:17 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 12:53 RLF Vanadium [7440-62-2]^ 2.56 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:17 JDH Zinc[7440-66-6]^ 17.1 ug/L 1 4.40 10.0 OD23026 EPA 6010D 05/04/20 15:17 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 3.2 ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 11:33 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 101 % 75-125 OD27030 EPA 8260D 0412712011:33 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 of 37 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II7B Lab Sample ID:CD05204-05 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 17:33 Work Order: CD05204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK 1,1,1-Trichloroethane [71-55-6]^ 0.12 U ug/L 1 0.12 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 U ug/L 1 0.28 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK 1,1,2-Trichloroethane [79-00-5]^ 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK 1,1-Dichloroethane [75-34-3]A 1.4 ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK 2-Butanone [78-93-3]^ 1.3 U ug/L 1 1.3 5.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OD29043 EPA 8260D 05/01/20 10:12 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OD29043 EPA 8260D 05/01/20 10:12 CMK Acetone [67-64-1]^ 10 U ug/L 1 10 20 OD29043 EPA 8260D 05/01/20 10:12 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OD29043 EPA 8260D 05/01/20 10:12 CMK Benzene [71-43-2]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Bromochloromethane [74-97-5]^ 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Chlorobenzene [108-90-7]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK QV-01 Ethylbenzene [100-41-4]^ 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Styrene [100-42-5]^ 0.11 U ug/L 1 0.11 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Tetrachloroethene [127-18-4]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK trans-1,3-Dichloropropene [10061-02-6]A 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 10:12 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 15 Of 37 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II7B Lab Sample ID:CD05204-05 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 17:33 Work Order: CD05204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OD29043 EPA 8260D 05/O1/20 10:12 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 44 1 50.0 88 % 53-136 OD29043 EPA 6260D 05101120 10:12 CMK Dibromofluoromethane 46 1 50.0 91 % 67-129 OD29043 EPA 6260D 0510112010:12 CMK Toluene-d8 43 1 50.0 86 % 59-134 OD29043 EPA 6260D 0510112010:12 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 12:57 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD23026 EPA 6010D 05/04/20 15:19 JDH Barium [7440-39-3]^ 36.4 ug/L 1 1.10 10.0 OD23026 EPA 6010D 05/04/20 15:19 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD23026 EPA 6010D 05/04/20 15:19 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD23026 EPA 6010D 05/04/20 15:19 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:19 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:19 JDH Copper[7440-50-8]^ 1.91 J ug/L 1 1.60 10.0 OD23026 EPA 6010D 05/04/20 15:19 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD23026 EPA 6010D 05/04/20 15:19 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD23026 EPA 6010D 05/04/20 15:19 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD23026 EPA 6010D 05/04/20 15:19 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD23026 EPA 6010D 05/04/20 15:19 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 12:57 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:19 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD23026 EPA 6010D 05/04/20 15:19 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 1.1 J ug/L 1 0.80 2.0 OD24032 EPA 8260D 04/24/20 17:30 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.2 1 5.00 103 % 75-125 OD24032 EPA 8260D 041241201720 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 16 of 37 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II8 Lab Sample ID:CDO5204-06 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 15:13 Work Order: CDO5204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 1,1-Dichloroethane [75-34-3]A 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 1,1-Dichloroethene [75-35-4]A 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 1,2,3-Trichloropropane [96-18-4]A 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 1,2-Dibromoethane [106-93-4]A 0.66 U ug/L 1 0.66 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 1,2-Dichlorobenzene [95-50-1]A 0.19 U ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 1,2-Dichloroethane [107-06-2]A 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 1,2-Dichloropropane [78-87-5]A 0.10 U ug/L 1 0.10 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 1,4-Dichlorobenzene [106-46-7]A 0.19 U ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OD29043 EPA 8260D 05/01/20 10:44 CMK 4-Methyl-2-pentanone [108-10-1]A 1.1 U ug/L 1 1.1 5.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OD29043 EPA 8260D 05/01/20 10:44 CMK Acrylonitrile [107-13-1]A 3.5 U ug/L 1 3.5 10 OD29043 EPA 8260D 05/01/20 10:44 CMK Benzene [71-43-2]A 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK QV-01 Bromodichloromethane [75-27-4]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Bromoform [75-25-2]A 0.22 U ug/L 1 0.22 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Carbon disulfide [75-15-O]A 1.5 U ug/L 1 1.5 5.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Chlorobenzene [308-90-7]A 1.3 ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Chloroform [67-66-3]A 0.18 U ug/L 1 0.18 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK cis-1,2-Dichloroethene [156-59-2]A 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Iodomethane [74-88-4]A 1.7 U ug/L 1 1.7 5.0 OD29043 EPA 8260D 05/01/20 10:44 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Tetrahydrofuran [109-99-9]A 16 ug/L 1 0.53 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Toluene [108-88-3]A 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK trans-1,2-Dichloroethene [156-60-5]A 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK trans-1,3-Dichloropropene [10061-02-6]A 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Trichloroethene [79-01-6]A 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Trichlorofluoromethane [75-69-4]A 0.24 U ug/L 1 0.24 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OD29043 EPA 8260D 05/01/20 10:44 CMK Vinyl chloride [75-01-4]A 0.32 U ug/L 1 0.32 1.0 OD29043 EPA 8260D 05/01/20 10:44 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 17 Of 37 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II8 Lab Sample ID:CD05204-06 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 15:13 Work Order: CD05204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OD29043 EPA 8260D 05/O1/20 10:44 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 91 % 53-136 OD29043 EPA 626OD 05101120 10:44 CMK Dibromofluoromethane 44 1 50.0 88 % 67-129 OD29043 EPA 626OD 0510112010:44 CMK Toluene-d8 46 1 50.0 93 % 59-134 OD29043 EPA 626OD 0510112010:44 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 13:01 RLF Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD23026 EPA 6010D 05/04/20 15:21 JDH Barium [7440-39-3]^ 181 ug/L 1 1.10 10.0 OD23026 EPA 6010D 05/04/20 15:21 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD23026 EPA 6010D 05/04/20 15:21 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD23026 EPA 6010D 05/04/20 15:21 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:21 JDH Cobalt[7440-48-4]^ 4.17 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:21 JDH Copper[7440-50-8]^ 10.5 ug/L 1 1.60 10.0 OD23026 EPA 6010D 05/04/20 15:21 JDH Lead [7439-92-1]^ 4.90 J ug/L 1 3.10 10.0 OD23026 EPA 6010D 05/04/20 15:21 JDH Nickel[7440-02-O]^ 98.5 ug/L 1 2.20 10.0 OD23026 EPA 6010D 05/04/20 15:21 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD23026 EPA 6010D 05/04/20 15:21 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD23026 EPA 6010D 05/04/20 15:21 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 13:01 RLF Vanadium [7440-62-2]^ 3.66 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:21 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD23026 EPA 6010D 05/04/20 15:21 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 310 D ug/L 20 16 40 OD27030 EPA 8260D 04/27/20 18:23 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 4.9 1 5.00 98 % 75-125 OD27030 EPA 826OD 0412712018:23 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 18 of 37 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II12 Lab Sample ID:CD05204-07 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 17:20 Work Order: CD05204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OD29043 EPA 8260D 05/01/20 11:17 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OD29043 EPA 8260D 05/01/20 11:17 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OD29043 EPA 8260D 05/01/20 11:17 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OD29043 EPA 8260D 05/01/20 11:17 CMK Benzene [71-43-2]A 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OD29043 EPA 8260D 05/01/20 11:17 CMK Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OD29043 EPA 8260D 05/01/20 11:17 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 19 Of 37 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II12 Lab Sample ID:CD05204-07 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 17:20 Work Order: CD05204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OD29043 EPA 8260D 05/O1/20 11:17 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 45 1 50.0 90 % 53-136 OD29043 EPA 6260D 05101120 11:17 CMK Dibromofluoromethane 44 1 50.0 87 % 67-129 OD29043 EPA 6260D 0510112011:17 CMK Toluene-d8 43 1 50.0 87 % 59-134 OD29043 EPA 6260D 0510112011:17 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 13:05 RLF Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD23026 EPA 6010D 05/04/20 15:30 JDH Barium [7440-39-3]^ 279 ug/L 1 1.10 10.0 OD23026 EPA 6010D 05/04/20 15:30 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD23026 EPA 6010D 05/04/20 15:30 JDH Cadmium [7440-43-9]^ 0.593 J ug/L 1 0.360 1.00 OD23026 EPA 6010D 05/04/20 15:30 JDH Chromium [7440-47-3]^ 1.75 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:30 JDH Cobalt[7440-48-4]^ 2.19 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:30 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 OD23026 EPA 6010D 05/04/20 15:30 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD23026 EPA 6010D 05/04/20 15:30 JDH Nickel[7440-02-O]^ 10.1 ug/L 1 2.20 10.0 OD23026 EPA 6010D 05/04/20 15:30 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD23026 EPA 6010D 05/04/20 15:30 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD23026 EPA 6010D 05/04/20 15:30 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 13:05 RLF Vanadium [7440-62-2]^ 1.90 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:30 JDH Zinc[7440-66-6]^ 5.38 J ug/L 1 4.40 10.0 OD23026 EPA 6010D 05/04/20 15:30 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 4.0 ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 11:59 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 100 % 75-125 OD27030 EPA 8260D 0412712011:59 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 20 of 37 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW-14 Lab Sample ID:CDO5204-08 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 08:46 Work Order: CDO5204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 1,1-Dichloroethane [75-34-3]A 0.13 U ug/L 1 0.13 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 1,1-Dichloroethene [75-35-4]A 0.21 U ug/L 1 0.21 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 1,2,3-Trichloropropane [96-18-4]A 0.23 U ug/L 1 0.23 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 U ug/L 1 0.48 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 1,2-Dibromoethane [106-93-4]A 0.66 U ug/L 1 0.66 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 1,2-Dichlorobenzene [95-50-1]A 0.19 U ug/L 1 0.19 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 1,2-Dichloroethane [107-06-2]A 0.21 U ug/L 1 0.21 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 1,2-Dichloropropane [78-87-5]A 0.10 U ug/L 1 0.10 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 1,4-Dichlorobenzene [106-46-7]A 0.19 U ug/L 1 0.19 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OD29042 EPA 8260D 04/30/20 19:08 CMK 4-Methyl-2-pentanone [108-10-1]A 1.1 U ug/L 1 1.1 5.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OD29042 EPA 8260D 04/30/20 19:08 CMK Acrylonitrile [107-13-1]A 3.5 U ug/L 1 3.5 10 OD29042 EPA 8260D 04/30/20 19:08 CMK Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Bromodichloromethane [75-27-4]A 0.17 U ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Bromoform [75-25-2]A 0.22 U ug/L 1 0.22 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Carbon disulfide [75-15-O]A 1.5 U ug/L 1 1.5 5.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Chloroform [67-66-3]A 0.69 J ug/L 1 0.18 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK cis-1,2-Dichloroethene [156-59-2]A 0.15 U ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Iodomethane [74-88-4]A 1.7 U ug/L 1 1.7 5.0 OD29042 EPA 8260D 04/30/20 19:08 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Tetrahydrofuran [109-99-9]A 0.53 U ug/L 1 0.53 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Toluene [108-88-3]A 0.14 U ug/L 1 0.14 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK trans-1,2-Dichloroethene [156-60-5]A 0.21 U ug/L 1 0.21 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK trans-1,3-Dichloropropene [10061-02-6]A 0.15 U ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Trichloroethene [79-01-6]A 0.15 U ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Trichlorofluoromethane [75-69-4]A 0.24 U ug/L 1 0.24 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Vinyl chloride [75-01-4]A 0.32 U ug/L 1 0.32 1.0 OD29042 EPA 8260D 04/30/20 19:08 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 21 Of 37 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW-14 Lab Sample ID:CD05204-08 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 08:46 Work Order: CD05204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OD29042 EPA 8260D 04/30/20 19:08 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 91 % 53-136 OD29042 EPA 6260D 04130120 19:08 CMK Dibromofluoromethane 45 1 50.0 90 % 67-129 OD29042 EPA 6260D 0413012019:08 CMK Toluene-d8 45 1 50.0 90 % 59-134 OD29042 EPA 6260D 0413012019:08 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Antimony [7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 13:10 RLF Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD23026 EPA 6010D 05/04/20 15:32 JDH Barium [7440-39-3]^ 16.8 ug/L 1 1.10 10.0 OD23026 EPA 6010D 05/04/20 15:32 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD23026 EPA 6010D 05/04/20 15:32 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD23026 EPA 6010D 05/04/20 15:32 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:32 JDH Cobalt [7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:32 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 OD23026 EPA 6010D 05/04/20 15:32 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD23026 EPA 6010D 05/04/20 15:32 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD23026 EPA 6010D 05/04/20 15:32 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD23026 EPA 6010D 05/04/20 15:32 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD23026 EPA 6010D 05/04/20 15:32 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 13:10 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:32 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD23026 EPA 6010D 05/04/20 15:32 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OD24032 EPA 8260D 04/24/20 18:47 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 98 % 75-125 OD24032 EPA 8260D 0412412018:47 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 22 of 37 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103-Duplicate II Lab Sample ID:CDO5204-09 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 08:46 Work Order: CDO5204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 1,1-Dichloroethane [75-34-3]A 0.13 U ug/L 1 0.13 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 1,1-Dichloroethene [75-35-4]A 0.21 U ug/L 1 0.21 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 1,2,3-Trichloropropane [96-18-4]A 0.23 U ug/L 1 0.23 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 U ug/L 1 0.48 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 1,2-Dibromoethane [106-93-4]A 0.66 U ug/L 1 0.66 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 1,2-Dichlorobenzene [95-50-1]A 0.19 U ug/L 1 0.19 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 1,2-Dichloroethane [107-06-2]A 0.21 U ug/L 1 0.21 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 1,2-Dichloropropane [78-87-5]A 0.10 U ug/L 1 0.10 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 1,4-Dichlorobenzene [106-46-7]A 0.19 U ug/L 1 0.19 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OD29042 EPA 8260D 04/30/20 19:40 CMK 4-Methyl-2-pentanone [108-10-1]A 1.1 U ug/L 1 1.1 5.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OD29042 EPA 8260D 04/30/20 19:40 CMK Acrylonitrile [107-13-1]A 3.5 U ug/L 1 3.5 10 OD29042 EPA 8260D 04/30/20 19:40 CMK Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Bromodichloromethane [75-27-4]A 0.17 U ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Bromoform [75-25-2]A 0.22 U ug/L 1 0.22 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Carbon disulfide [75-15-O]A 1.5 U ug/L 1 1.5 5.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Chlorobenzene [308-90-7]A 0.90 J ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Chloroform [67-66-3]A 0.18 U ug/L 1 0.18 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK cis-1,2-Dichloroethene [156-59-2]A 0.15 U ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Iodomethane [74-88-4]A 1.7 U ug/L 1 1.7 5.0 OD29042 EPA 8260D 04/30/20 19:40 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Tetrahydrofuran [109-99-9]A 0.53 U ug/L 1 0.53 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Toluene [108-88-3]A 0.14 U ug/L 1 0.14 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK trans-1,2-Dichloroethene [156-60-5]A 0.21 U ug/L 1 0.21 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK trans-1,3-Dichloropropene [10061-02-6]A 0.15 U ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Trichloroethene [79-01-6]A 0.15 U ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Trichlorofluoromethane [75-69-4]A 0.24 U ug/L 1 0.24 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Vinyl chloride [75-01-4]A 0.32 U ug/L 1 0.32 1.0 OD29042 EPA 8260D 04/30/20 19:40 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 23 Of 37 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-Duplicate II Lab Sample ID:CD05204-09 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 08:46 Work Order: CD05204 Project: White Street LF-Phase II Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OD29042 EPA 8260D 04/30/20 19:40 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 45 1 50.0 90 % 53-136 OD29042 EPA 626OD 0413012019:40 CMK Dibromofluoromethane 46 1 50.0 91 % 67-129 OD29042 EPA 626OD 0413012019:40 CMK Toluene-d8 44 1 50.0 87 % 59-134 OD29042 EPA 626OD 0413012019:40 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Antimony [7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 13:14 RLF Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD23026 EPA 6010D 05/04/20 15:34 JDH Barium [7440-39-3]^ 184 ug/L 1 1.10 10.0 OD23026 EPA 6010D 05/04/20 15:34 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD23026 EPA 6010D 05/04/20 15:34 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD23026 EPA 6010D 05/04/20 15:34 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:34 JDH Cobalt[7440-48-4]^ 4.21 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:34 JDH Copper[7440-50-8]^ 10.2 ug/L 1 1.60 10.0 OD23026 EPA 6010D 05/04/20 15:34 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD23026 EPA 6010D 05/04/20 15:34 JDH Nickel[7440-02-O]^ 99.3 ug/L 1 2.20 10.0 OD23026 EPA 6010D 05/04/20 15:34 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD23026 EPA 6010D 05/04/20 15:34 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD23026 EPA 6010D 05/04/20 15:34 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 13:14 RLF Vanadium [7440-62-2]^ 3.64 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:34 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD23026 EPA 6010D 05/04/20 15:34 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 320 D ug/L 20 16 40 OD27030 EPA 8260D 04/27/20 18:48 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.2 1 5.00 103 % 75-125 OD27030 EPA 826OD 0412712018:48 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 24 of 37 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OD29O42 - EPA 5O3OB MS Blank (OD29042-BLK1) Prepared: 04/29/2020 16:48 Analyzed: 04/30/2020 13:12 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Tetrahydrofuran 0.53 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 45 u9/L 50.0 89 53-136 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 25 Of 37 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OD29O42 - EPA 5O3OB MS - Continued (� �Eo www.encolabs.com Blank (OD29042-BLK1) Continued Prepared: 04/29/2020 16:48 Analyzed: 04/30/2020 13:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Dibromofluoromethane 44 u9/L 50.0 87 67-129 Toluene-& 46 u9/L 50.0 92 59-134 LCS (OD29042-BSI) Prepared: 04/29/2020 16:48 Analyzed: 04/30/2020 11:35 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 109 75-133 Benzene 22 1.0 ug/L 20.0 111 80-134 Chlorobenzene 20 1.0 ug/L 20.0 100 80-120 Toluene 19 1.0 ug/L 20.0 97 71-120 Trichloroethene 23 1.0 ug/L 20.0 117 74-120 Matrix Spike (OD29042-MS1) Prepared: 04/29/2020 16:48 Analyzed: 04/30/2020 11:02 Source: CD06682-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 17 1.0 ug/L 20.0 0.21 U 87 75-133 Benzene 19 1.0 ug/L 20.0 0.15 U 94 80-134 Chlorobenzene 18 1.0 ug/L 20.0 0.17 U 88 80-120 Toluene 17 1.0 ug/L 20.0 0.14 U 87 71-120 Trichloroethene 20 1.0 ug/L 20.0 0.15 U 101 74-120 Matrix Spike Dup (OD29042-MSDI) Prepared: 04/29/2020 16:48 Analyzed: 04/30/2020 12:07 Source: CD06682-02 Analvte 1,1-Dichloroethene Benzene Chlorobenzene Toluene Trichloroethene Batch OD29O43 - EPA 5030E MS Result 22 18 16 16 18 Flaq POL 1.0 1.0 1.0 1.0 1.0 Units ug/L ug/L ug/L ug/L ug/L Spike Level 20.0 20.0 20.0 20.0 20.0 Source Result 0.21 U 0.15 U 0.17 U 0.14 U 0.15 U %REC 108 89 81 79 92 %REC Limits 75-133 80-134 80-120 71-120 74-120 RPD 22 5 8 11 10 RPD Limit Notes 20 QM-11 17 16 17 22 Blank (OD29043-BLK3) Prepared: 04/29/2020 16:47 Analyzed: 05/O1/2020 02:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 26 Of 37 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OD29043 - EPA 5030B MS - Continued Blank (OD29043-BLK1) Continued Prepared: 04/29/2020 16:47 Analyzed: 05/01/2020 02:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Tetrahydrofuran 0.53 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L 4-Bromofluorobenzene 45 u91L 50.0 90 53-136 Dibromofluoromethane 44 u91L 50.0 89 67-129 Toluene-d8 46 u91L 50.0 93 59-134 LCS (OD29043-BSI) Prepared: 04/29/2020 16:47 Analyzed: 05/01/2020 00:32 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes 1,1-Dichloroethene 20 1.0 ug/L 20.0 98 75-133 Benzene 21 1.0 ug/L 20.0 106 80-134 Chlorobenzene 18 1.0 ug/L 20.0 91 80-120 Toluene 18 1.0 ug/L 20.0 92 71-120 Trichloroethene 21 1.0 ug/L 20.0 103 74-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 27 of 37 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OD29O43 - EPA 5O3OB MS - Continued (� �Eo www.encolabs.com Matrix Spike (OD29043-MS1) Prepared: 04/29/2020 16:47 Analyzed: 05/01/2020 01:04 Source: CD06682-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 20 1.0 ug/L 20.0 0.21 U 98 75-133 Benzene 21 1.0 ug/L 20.0 0.15 U 107 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 96 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 95 71-120 Trichloroethene 23 1.0 ug/L 20.0 0.15 U 115 74-120 Matrix Spike Dup (OD29043-MSD1) Prepared: 04/29/2020 16:47 Analyzed: 05/01/2020 01:36 Source: CD06682-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 18 1.0 ug/L 20.0 0.21 U 89 75-133 10 20 Benzene 20 1.0 ug/L 20.0 0.15 U 101 80-134 6 17 Chlorobenzene 17 1.0 ug/L 20.0 0.17 U 86 80-120 12 16 Toluene 17 1.0 ug/L 20.0 0.14 U 85 71-120 11 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 104 74-120 10 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD23O26 - EPA 3OO5A Blank (OD23026-BLK1) Prepared: 04/23/2020 09:57 Analyzed: 05/04/2020 13:56 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L LCS (OD23026-BS1) Prepared: 04/23/2020 09:57 Analyzed: 05/04/2020 13:59 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits Arsenic 217 10.0 ug/L 200 108 80-120 Barium 218 10.0 ug/L 200 109 80-120 Beryllium 20.4 1.00 ug/L 20.0 102 80-120 Cadmium 21.4 1.00 ug/L 20.0 107 80-120 Chromium 206 10.0 ug/L 200 103 80-120 Cobalt 211 10.0 ug/L 200 106 80-120 Copper 204 10.0 ug/L 200 102 80-120 Lead 216 10.0 ug/L 200 108 80-120 Nickel 219 10.0 ug/L 200 110 80-120 Selenium 223 10.0 ug/L 200 111 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. RPD RPD Limit Notes Page 28 of 37 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD23O26 - EPA 3OO5A - Continued LCS (OD23026-BSI) Continued Prepared: 04/23/2020 09:57 Analyzed: 05/04/2020 13:59 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Silver 210 10.0 ug/L 200 105 80-120 Vanadium 204 10.0 ug/L 200 102 80-120 Zinc 216 10.0 ug/L 200 108 80-120 Matrix Spike (OD23026-MS3) Prepared: 04/23/2020 09:57 Analyzed: 05/04/2020 14:21 Source: CD05554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 198 10.0 ug/L 200 7.60 U 99 75-125 Barium 223 10.0 ug/L 200 12.6 105 75-125 Beryllium 20.1 1.00 ug/L 20.0 0.171 100 75-125 Cadmium 20.5 1.00 ug/L 20.0 0.360 U 102 75-125 Chromium 199 10.0 ug/L 200 1.40 U 100 75-125 Cobalt 205 10.0 ug/L 200 1.61 102 75-125 Copper 198 10.0 ug/L 200 1.60 U 99 75-125 Lead 207 10.0 ug/L 200 3.10 U 104 75-125 Nickel 211 10.0 ug/L 200 2.20 U 106 75-125 Selenium 209 10.0 ug/L 200 6.20 U 105 75-125 Silver 201 10.0 ug/L 200 1.90 U 101 75-125 Vanadium 200 10.0 ug/L 200 1.40 U 100 75-125 Zinc 211 10.0 ug/L 200 6.13 103 75-125 Matrix Spike Dup (OD23026-MSD1) Prepared: 04/23/2020 09:57 Analyzed: 05/04/2020 14:24 Source: CD05554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 199 10.0 ug/L 200 7.60 U 99 75-125 0.6 20 Barium 223 10.0 ug/L 200 12.6 105 75-125 0.2 20 Beryllium 20.2 1.00 ug/L 20.0 0.171 100 75-125 0.2 20 Cadmium 20.5 1.00 ug/L 20.0 0.360 U 103 75-125 0.2 20 Chromium 200 10.0 ug/L 200 1.40 U 100 75-125 0.1 20 Cobalt 204 10.0 ug/L 200 1.61 101 75-125 0.9 20 Copper 198 10.0 ug/L 200 1.60 U 99 75-125 0.2 20 Lead 202 10.0 ug/L 200 3.10 U 101 75-125 3 20 Nickel 210 10.0 ug/L 200 2.20 U 105 75-125 0.6 20 Selenium 209 10.0 ug/L 200 6.20 U 105 75-125 0.03 20 Silver 200 10.0 ug/L 200 1.90 U 100 75-125 0.4 20 Vanadium 200 10.0 ug/L 200 1.40 U 100 75-125 0.07 20 Zinc 212 10.0 ug/L 200 6.13 103 75-125 0.3 20 Post Spike (OD23026-PSI) Prepared: 04/23/2020 09:57 Analyzed: 05/04/2020 14:26 Source: CD05554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.212 0.0100 mg/L 0.200 -0.000908 106 80-120 Barium 0.232 0.0100 mg/L 0.200 0.0126 110 80-120 Beryllium 0.0208 0.00100 mg/L 0.0200 0.000171 103 80-120 Cadmium 0.0213 0.00100 mg/L 0.0200 0.000116 106 80-120 Chromium 0.207 0.0100 mg/L 0.200 0.000363 103 80-120 Cobalt 0.214 0.0100 mg/L 0.200 0.00161 106 80-120 Copper 0.204 0.0100 mg/L 0.200 0.000658 102 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 29 of 37 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD23O26 - EPA 3OO5A - Continued Post Spike (OD23026-PS1) Continued Prepared: 04/23/2020 09:57 Analyzed: 05/04/2020 14:26 Source: CD05554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Lead 0.214 0.0100 mg/L 0.200 -0.000308 107 80-120 Nickel 0.221 0.0100 mg/L 0.200 0.000277 111 80-120 Selenium 0.231 0.0100 mg/L 0.200 0.00405 114 80-120 Silver 0.197 0.0100 mg/L 0.200 0.000333 98 80-120 Vanadium 0.206 0.0100 mg/L 0.200 0.000692 103 80-120 Zinc 0.222 0.0100 mg/L 0.200 0.00613 108 80-120 Batch OD24O21 - EPA 3O05A Blank (OD24021-BLK1) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:44 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (OD24021-BSI) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:48 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 20.9 1.00 ug/L 20.0 105 80-120 Selenium 21.5 1.00 ug/L 20.0 107 80-120 Thallium 21.0 1.00 ug/L 20.0 105 80-120 Matrix Spike (OD24021-MS1) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:52 Source: CD05553-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.1 2.00 ug/L 40.0 0.740 U 105 75-125 Selenium 38.8 2.00 ug/L 40.0 1.82 U 97 75-125 Thallium 40.7 2.00 ug/L 40.0 0.220 U 102 75-125 Matrix Spike Dup (OD24021-MSDS) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:56 Source: CD05553-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.7 2.00 ug/L 40.0 0.740 U 107 75-125 1 20 Selenium 41.3 2.00 ug/L 40.0 1.82 U 103 75-125 6 20 Thallium 41.3 2.00 ug/L 40.0 0.220 U 103 75-125 2 20 Post Spike (OD24021-PSI) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 12:05 Source: CD05553-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.5 1.00 ug/L 20.0 0.00516 108 75-125 Selenium 19.7 1.00 ug/L 20.0 0.0825 98 75-125 Thallium 21.3 1.00 ug/L 20.0 0.00474 107 75-125 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD24O32 - EPA 5030E MS FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 30 Of 37 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD24O32 - EPA 5O3OB MS - Continued Blank (OD24032-BLK1) Prepared: 04/24/2020 00:00 Analyzed: 04/24/2020 11:28 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 4.8 u9/L 5.00 96 75-125 LCS (OD24032-BSI) Prepared: 04/24/2020 00:00 Analyzed: 04/24/2020 10:31 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 23 2.0 ug/L 25.0 94 80-133 Toluene-d8 4.9 u9/L 5.00 99 75-125 Matrix Spike (OD24032-MS1) Prepared: 04/24/2020 00:00 Analyzed: 04/24/2020 20:55 Source: AD02687-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 28 2.0 ug/L 25.0 3.5 96 80-133 Toluene-d8 5.0 u9/L 5.00 99 75-125 Matrix Spike Dup (01324032-MS131) Prepared: 04/24/2020 00:00 Analyzed: 04/27/2020 08:56 Source: AD02687-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 27 2.0 ug/L 25.0 3.5 95 80-133 0.6 19 Toluene-d8 4.9 u9/L 5.00 99 75-125 Batch OD27O3O - EPA 50308 MS Blank (OD27030-BLK3) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 10:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 5.1 u9/L 5.00 102 75-125 LCS (OD27030-BS1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 09:21 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 97 80-133 Toluene-d8 4.9 u9/L 5.00 98 75-125 Matrix Spike (OD27030-MS1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:14 Source: AD02710-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 95 80-133 Toluene-d8 5.2 u9/L 5.00 104 75-125 Matrix Spike Dup (01327030-MS131) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:39 Source: AD02710-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 0.80 U 98 80-133 3 19 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 31 of 37 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD27O3O - EPA 5O3OB MS - Continued Matrix Spike Dup (OD27030-MSDS) Continued Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:39 Source: AD02710-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 4.9 u9/L 5.00 98 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 32 Of 37 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QM-11 Precision between duplicate matrix spikes of the same sample was outside acceptance limits. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 33 of 37 d 5. k o 3 3 3 a m m L) a j � 77 m m O � a � f 3 � N f0 0 m o to m E q n� m y n � N G d m 30 0 � O y P. C ryry .z n m m Q m Q� m a n 7 � a b 5 O 4 � E T d � 0 P d. a � n � i f 3 A [7 © w O Q i cj bwit C:O I "00-4 n T m a CL _ � a ,_, r► N g � �+ V "1 J� ,•1 :J 1 a Q P iIIIIIIIIII Iffiffiffiffimmmmmm XI XlXIXIXlXI><ix x Ix Ix n CL m N m m m 3 C N w a m o w 0 m N Cr X 0 CD 0 1 o w Z ro n � V C' ^ x C) CD 0 r w PI O 0 0 -'0 IV Q Q 4 +3 Z N b n C r O -V f/Y m 3} 'b 'p 0 m 1t1,jC ; C m z z m 4� mN 3 a n a CD n o CD c O ® r Z n f!J m 0 o n v N f*7 CD _ P = 0 o r m Z � �� a = � y n W o a�i � m a v a ro N O 82600 Appendix 1,826M OdandedAWGD SIM 10 Fn Ag,Ata,BA,Be,Cd.Co,Cr,CU,NI,Pb,Sb,Se, U) Se,TI,V,Zn 0 2 v n w Z A m Tam O hit a x Nv L n � O w � v w ❑ O CD m c0 o _ m m (D N N 3 a cp c O 3 0 O- v m n_ m O SL cr N (D a v O Page 34 of 37 3 O ,n n cn m m n w D m O N a. 93 m � a (p 93 D m a 'm C) 3t D D m a= c a y •C C K 0 w D �D - n a o n v`9 N m Q a C [i 0- 3 c a a y m C', o W a m b C11 cr W m T 7 y ❑ �1 a a 1, ] ?. L n 7 CD Oo Ut N o w❑ fn m D m O 0 0 q 1 3 n or �� ❑ = z m RE aCD6 4 a 3 i!` 3 14 O a R A� 1 a ^ � X (D �1 W m o n 82800 Appendix 9 ,8MOD o E,4ended,826M SIM ID A%Aa Ba,Be,Cd,Ca,Cr,Cu,Nk,Pb,Sh.Se, u a Se TI,V Zn C1 O c 9} b m N C ° N 3 Q o ` m @ mCDCL ? N o IV ro E o ) Q y N 0 ty , W ❑ R _ v w y Cr tA NOL Page 35 of 37 Sample Preservation Verification ENCO Cary�� Work Order CD05204 Project: White Street LF-Phase II Client: Golder Associates, Inc. (00007) Project #: 1668421.107 Logged In: 22-Apr-20 14:29 Logged By: John C King II Preservation Check Performed By: ;�� DatelTime: U-2 Z - 21) 1425 C D05204-01 Cont Type Pres (pH) Requirement pH Checked 1 In Control pH Adjusted Date/Time Adjusted Reagent Used/Comments .: A 250mLP+HNO3 <2 rY/ I N I NA Y I I I NA C DO5204-02 Cont Type Pres (pH) Requirement pH Checked 1 In Control pH Adjusted Date�me Reagent Used/Comments Adjusted A 250mLP+HNO3 <2 YIN / NA Y /. N I NA CDO5204-03 Cont Type Pres (pH) pH Checked / Requirement In Control. pH Adjusters Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y. 1 N I NA Y I N I NA CD05204-04 Cant Type Pres (pH) Requirement pH Checked/ In Control PH Adjusted Date/Time Adjusted Reagent Used/Comments A 25omLP+HNO3 <2 Y) ! N / NA Y ! I NA CDO5204-05 Cont Type Pres (pH) Requirement pH Checked / In Control PH Adjusted Date/Time Adiusted Reagent Used/Comments A 250mLP+HNO3 <2 Y / N I NA Y / � 'I I NA C D05204-06 Cont Type Pres (pH) Requirement pH Checked I In Control pH Adjusted Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y / N / NA Y ! 'Ni / NA CDO5204-07 Cont YP Type Pres (pH) Requirement pH Checked I In Control Datemme pH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y/ N I NA Y IgI NA C D 05204-08 Cont :Type Pres (pH) . Requirement pH Checked / In Control Date/TimeYp pH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 I N I NA Y !I i4y I NA CDO5204-09 Cont Type Pres (pH) Yp Requirement pH Checked / In Control DateMme PH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y I N/ NA Y I N.I NA Page 36 of 37 CaELMNTIPrintlwko_Preservation Check. rpt _ _ Sample Preservation Verification ENCO Car y giv, fD Work Order: CD05204 Project: White Street LF-Phase II Client: Golder Associates, Inc. (00007) Project #: 1668421.107 Logged In: 22-Apr-20 14:29 Logged By: John C King Preservation Check Performed By: Date/Time. f-.3 S Reaclent Name ID 1 2 pH Strip ID: CoC t Oho Reagent Name ID 3 4 Rea ent Name ID 5 6 C,IE LMNT1Printlwko_Preservation C heck. rpt Page 37 of 37 WORK ORDER Printed: 5/8/2020 10:38:53AM CD05204 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Daniel B. Mays Project: White Street LF-Phase II Project Number: 1668421.107 PO #: Report To: Golder Associates, Inc. (G0007) Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 Phone: (336) 852-4903 Fax: (336) 852-4904 Invoice To: City of Greensboro (CI034) Richard Lovett 401 Patton Ave Greensboro, NC 27406 Phone :(336) 373-4188 Fax: Received By: Timothy J. Parker Date Received: 22-Apr-20 13:55 Logged In By: John C King Date Logged In: 22-Apr-20 14:29 Work Order Comments: C-2142 received at 1.1°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Wednesday, June 17, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.107, Project Name/Desc: White Street LF-Phase II ENCO Workorder(s): CD06349 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Thursday, April 23, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Daniel B. Mays Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of 9 PROJECT NARRATIVE Date: 17 June 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase II Lab ID: CD06349 Overview (� �Eo www.encolabs.com This report is an amendment to the original report dated May 8, 2020 for this work order. This report was revised, at the client's request, to only report selenium by EPA method 601 OD. Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples Exception QV-01 was was appended to samples II-1, II-6, and II-7 for analysis Bromochloromethane, Carbon tetrachloride, Chloroform, and Dibromomethane because the associated continuing calibration verification standard exhibited high bias; since the result is ND for the analyte there is no impact on data quality. Quality Control Remarks No Comments Other Comments The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Daniel Mays Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of 19 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-IIl Lab ID: CD06349-01 Sampled: 04/22/20 12:42 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:40 05/07/20 17:20 EPA 6020E EPA 3005A 10/19/20 04/24/20 10:38 04/28/20 16:23 EPA 8260D EPA 503013_MS 05/06/20 05/04/20 15:59 05/05/20 09:54 Client ID: 4103-II1 Lab ID: C1306349-01RE1 Sampled: 04/22/20 12:42 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/06/20 04/29/20 00:00 04/29/20 13:44 Client ID: 4103-II6 Lab ID: CD06349-02 Sampled: 04/22/20 11:18 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:40 05/07/20 17:23 EPA 6020E EPA 3005A 10/19/20 04/24/20 10:38 04/28/20 16:28 EPA 8260D EPA 5030B_MS 05/06/20 04/27/20 00:00 04/27/20 17:06 EPA 8260D EPA 503013_MS O5/06/20 05/04/20 15:59 05/05/20 10:26 Client ID: 4103-II7 Lab ID: CD06349-03 Sampled: 04/22/20 09:42 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:40 05/07/20 17:30 EPA 6020E EPA 3005A 10/19/20 04/24/20 10:38 04/28/20 16:32 EPA 8260D EPA 503013_MS 05/06/20 04/27/20 00:00 04/27/20 17:32 EPA 8260D EPA 503013_MS 05/06/20 05/04/20 15:59 05/05/20 10:59 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 19 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4103-IIl Lab ID: CD06349-01 Analvte Results Flag MDL PQL Units Method Notes 1,2-Dichlorobenzene 0.54 J 0.19 1.0 ug/L EPA 8260D 1,4-Dichlorobenzene 7.5 0.19 1.0 ug/L EPA 8260D Barium - Total 312 1.10 10.0 ug/L EPA 6010D Chlorobenzene 3.0 0.17 1.0 ug/L EPA 8260D Chromium - Total 4.21 J 1.40 10.0 ug/L EPA 6010D Cobalt - Total 21.0 1.40 10.0 ug/L EPA 6010D Copper - Total 14.8 1.60 10.0 ug/L EPA 6010D Nickel - Total 24.6 2.20 10.0 ug/L EPA 6010D Client ID: 4103-IIl Lab ID: CD06349-01RE3 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 170 D 4.0 10 ug/L EPA 8260D Client ID: 4103-II6 Lab ID: CD06349-02 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dichlorobenzene 1.1 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 33 0.80 2.0 ug/L EPA 8260D Barium - Total 148 1.10 10.0 ug/L EPA 6010D Chlorobenzene 1.1 0.17 1.0 ug/L EPA 8260D Cobalt - Total 15.3 1.40 10.0 ug/L EPA 6010D Copper - Total 24.6 1.60 10.0 ug/L EPA 6010D Nickel - Total 12.5 2.20 10.0 ug/L EPA 6010D Zinc - Total 21.1 4.40 10.0 ug/L EPA 6010D Client ID: 4103-II7 Lab ID: CD06349-03 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 5.8 0.80 2.0 ug/L EPA 8260D Barium - Total 55.9 1.10 10.0 ug/L EPA 6010D Copper - Total 2.18 J 1.60 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 19 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II1 Lab Sample ID:CD06349-01 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 12:42 Work Order: CD06349 Project: White Street LF-Phase II Sampled By: Nicolas Tejada Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 1,1,1-Trichloroethane [71-55-6]^ 0.12 U ug/L 1 0.12 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 U ug/L 1 0.28 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 1,1,2-Trichloroethane [79-00-5]^ 0.14 U ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.54 J ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 1,4-Dichlorobenzene [306-46-7]^ 7.5 ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 2-Butanone [78-93-3]^ 1.3 U ug/L 1 1.3 5.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 2-Hexanone [591-78-6]^ 0.88 U ug/L 1 0.88 5.0 OE04039 EPA 8260D 05/05/20 09:54 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Acetone [67-64-1]^ 10 U ug/L 1 10 20 OE04039 EPA 8260D 05/05/20 09:54 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OE04039 EPA 8260D 05/05/20 09:54 CMK Benzene[71-43-2]^ 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Bromochloromethane [74-97-5]^ 0.48 U ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Carbon disulfide [75-15-O]^ 1.5 U ug/L 1 1.5 5.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK QV-01 Chlorobenzene [308-90-7]^ 3.0 ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Chloroethane [75-00-3]^ 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK QV-01 Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK cis-1,3-Dichloropropene [10061-01-5]^ 0.20 U ug/L 1 0.20 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK QV-01 Ethylbenzene [100-41-4]^ 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 OE04039 EPA 8260D 05/05/20 09:54 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 of 19 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-IIl Lab Sample ID:CD06349-01 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 12:42 Work Order: CD06349 Project: White Street LF-Phase II Sampled By: Nicolas Tejada Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OE04039 EPA 8260D 05/05/20 09:54 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 92 % 53-136 OE04039 EPA 626OD 05105120 09:54 CMK Dibromofluoromethane 44 1 50.0 88 % 67-129 OE04039 EPA 626OD 05105120 09:54 CMK Toluene-d8 45 1 50.0 90 % 59-134 OE04039 EPA 626OD 05105120 09:54 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 OD24022 EPA 6020B 04/28/20 16:23 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27010 EPA 6010D 05/07/20 17:20 JDH Barium [7440-39-3]^ 312 ug/L 1 1.10 10.0 OD27010 EPA 6010D 05/07/20 17:20 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27010 EPA 6010D 05/07/20 17:20 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27010 EPA 6010D 05/07/20 17:20 JDH Chromium [7440-47-3]^ 4.21 J ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:20 JDH Cobalt[7440-48-4]A 21.0 ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:20 JDH Copper[7440-50-8]^ 14.8 ug/L 1 1.60 10.0 OD27010 EPA 6010D 05/07/20 17:20 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27010 EPA 6010D 05/07/20 17:20 JDH Nickel[7440-02-O]^ 24.6 ug/L 1 2.20 10.0 OD27010 EPA 6010D 05/07/20 17:20 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27010 EPA 6010D 05/07/20 17:20 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27010 EPA 6010D 05/07/20 17:20 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24022 EPA 6020B 04/28/20 16:23 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:20 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD27010 EPA 6010D 05/07/20 17:20 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 170 D ug/L 5 4.0 10 OD29036 EPA 8260D 04/29/20 13:44 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 98 % 75-125 OD29036 EPA 826OD 0412912013:44 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 19 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II6 Lab Sample ID:CD06349-02 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 11:18 Work Order: CD06349 Project: White Street LF-Phase II Sampled By: Nicolas Tejada Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 1,1,1-Trichloroethane [71-55-6]^ 0.12 U ug/L 1 0.12 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 U ug/L 1 0.28 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 1,1,2-Trichloroethane [79-00-5]^ 0.14 U ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 1,4-Dichlorobenzene [306-46-7]^ 1.1 ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 2-Butanone [78-93-3]^ 1.3 U ug/L 1 1.3 5.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 2-Hexanone [591-78-6]^ 0.88 U ug/L 1 0.88 5.0 OE04039 EPA 8260D 05/05/20 10:26 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Acetone [67-64-1]^ 10 U ug/L 1 10 20 OE04039 EPA 8260D 05/05/20 10:26 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OE04039 EPA 8260D 05/05/20 10:26 CMK Benzene[71-43-2]^ 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Bromochloromethane [74-97-5]^ 0.48 U ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Carbon disulfide [75-15-O]^ 1.5 U ug/L 1 1.5 5.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK QV-01 Chlorobenzene [308-90-7]^ 1.1 ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Chloroethane [75-00-3]^ 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK QV-01 Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK cis-1,3-Dichloropropene [10061-01-5]^ 0.20 U ug/L 1 0.20 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK QV-01 Ethylbenzene [100-41-4]^ 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 OE04039 EPA 8260D 05/05/20 10:26 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 of 19 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II6 Lab Sample ID:CD06349-02 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 11:18 Work Order: CD06349 Project: White Street LF-Phase II Sampled By: Nicolas Tejada Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OE04039 EPA 8260D 05/05/20 10:26 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 49 1 50.0 97 % 53-136 OE04039 EPA 626OD 0510512010:26 CMK Dibromofluoromethane 44 1 50.0 88 % 67-129 OE04039 EPA 626OD 0510512010:26 CMK Toluene-d8 43 1 50.0 87 % 59-134 OE04039 EPA 626OD 0510512010:26 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 OD24022 EPA 6020B 04/28/20 16:28 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27010 EPA 6010D 05/07/20 17:23 JDH Barium [7440-39-3]^ 148 ug/L 1 1.10 10.0 OD27010 EPA 6010D 05/07/20 17:23 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27010 EPA 6010D 05/07/20 17:23 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27010 EPA 6010D 05/07/20 17:23 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:23 JDH Cobalt[7440-48-4]^ 15.3 ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:23 JDH Copper[7440-50-8]^ 24.6 ug/L 1 1.60 10.0 OD27010 EPA 6010D 05/07/20 17:23 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27010 EPA 6010D 05/07/20 17:23 JDH Nickel[7440-02-O]^ 12.5 ug/L 1 2.20 10.0 OD27010 EPA 6010D 05/07/20 17:23 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27010 EPA 6010D 05/07/20 17:23 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27010 EPA 6010D 05/07/20 17:23 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24022 EPA 6020B 04/28/20 16:28 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:23 JDH Zinc[744O-66-6]^ 21.1 ug/L 1 4.40 10.0 OD27010 EPA 6010D 05/07/20 17:23 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 33 ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 17:06 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 99 % 75-125 OD27030 EPA 826OD 0412712017:06 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 19 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II7 Lab Sample ID:CD06349-03 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 09:42 Work Order: CD06349 Project: White Street LF-Phase II Sampled By: Nicolas Tejada Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OE04039 EPA 8260D 05/05/20 10:59 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OE04039 EPA 8260D 05/05/20 10:59 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OE04039 EPA 8260D 05/05/20 10:59 CMK Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK QV-01 Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK QV-01 Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OE04039 EPA 8260D 05/05/20 10:59 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 of 19 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II7 Lab Sample ID:CD06349-03 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 09:42 Work Order: CD06349 Project: White Street LF-Phase II Sampled By: Nicolas Tejada Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OE04039 EPA 8260D 05/05/20 10:59 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 47 1 50.0 95 % 53-136 OE04039 EPA 626OD 0510512010:59 CMK Dibromofluoromethane 45 1 50.0 89 % 67-129 OE04039 EPA 626OD 0510512010:59 CMK Toluene-d8 44 1 50.0 88 % 59-134 OE04039 EPA 626OD 0510512010:59 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 OD24022 EPA 6020B 04/28/20 16:32 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27010 EPA 6010D 05/07/20 17:30 JDH Barium [7440-39-3]^ 55.9 ug/L 1 1.10 10.0 OD27010 EPA 6010D 05/07/20 17:30 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27010 EPA 6010D 05/07/20 17:30 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27010 EPA 6010D 05/07/20 17:30 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:30 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:30 JDH Copper[7440-50-8]^ 2.18 J ug/L 1 1.60 10.0 OD27010 EPA 6010D 05/07/20 17:30 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27010 EPA 6010D 05/07/20 17:30 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD27010 EPA 6010D 05/07/20 17:30 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27010 EPA 6010D 05/07/20 17:30 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27010 EPA 6010D 05/07/20 17:30 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24022 EPA 6020B 04/28/20 16:32 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:30 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD27010 EPA 6010D 05/07/20 17:30 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 5.8 ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 17:32 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.3 1 5.00 105 % 75-125 OD27030 EPA 826OD 041271201722 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 of 19 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OEO4O39 - EPA 5030E MS Blank (OE04039-BLK1) Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 01:50 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Tetrahydrofuran 0.53 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 48 u9/L 50.0 96 53-136 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 11 Of 19 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OEO4O39 - EPA 5030E MS - Continued (� �Eo www.encolabs.com Blank (OE04039-BLK1) Continued Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 01:50 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Dibromofluoromethane 47 u9/L 50.0 93 67-129 Toluene-& 47 u9/L 50.0 94 59-134 LCS (OE04039-BS1) Prepared: 05/04/2020 15:59 Analyzed: 05/04/2020 23:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 23 1.0 ug/L 20.0 117 75-133 Benzene 21 1.0 ug/L 20.0 103 80-134 Chlorobenzene 19 1.0 ug/L 20.0 95 80-120 Toluene 18 1.0 ug/L 20.0 89 71-120 Trichloroethene 22 1.0 ug/L 20.0 108 74-120 Matrix Spike (OE04039-MS1) Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 00:13 Source: CD06682-13 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 26 1.0 ug/L 20.0 0.21 U 128 75-133 Benzene 21 1.0 ug/L 20.0 0.15 U 107 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 94 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 94 71-120 Trichloroethene 23 1.0 ug/L 20.0 0.15 U 116 74-120 Matrix Spike Dup (OE04039-MSD1) Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 00:45 Source: CD06682-13 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 0.21 U 106 75-133 19 20 Benzene 20 1.0 ug/L 20.0 0.15 U 100 80-134 7 17 Chlorobenzene 17 1.0 ug/L 20.0 0.17 U 87 80-120 8 16 Toluene 17 1.0 ug/L 20.0 0.14 U 85 71-120 10 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 103 74-120 12 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O22 - EPA 3OO5A Blank (OD24022-BLK3) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (OD24022-BS1) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:11 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.4 1.00 ug/L 20.0 107 80-120 Selenium 19.1 1.00 ug/L 20.0 95 80-120 Thallium 21.1 1.00 ug/L 20.0 105 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 Of 19 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O22 - EPA 3OO5A - Continued Matrix Spike (OD24022-MS3) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:15 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.8 2.00 ug/L 40.0 0.740 U 107 75-125 Selenium 40.8 2.00 ug/L 40.0 1.82 U 102 75-125 Thallium 42.3 2.00 ug/L 40.0 0.220 U 106 75-125 Matrix Spike Dup (OD24022-MSDS) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:19 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.6 2.00 ug/L 40.0 0.740 U 107 75-125 0.4 20 Selenium 41.4 2.00 ug/L 40.0 1.82 U 103 75-125 1 20 Thallium 42.0 2.00 ug/L 40.0 0.220 U 105 75-125 0.5 20 Post Spike (OD24022-PS1) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:24 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 22.9 1.00 ug/L 20.0 0.0779 114 75-125 Selenium 21.1 1.00 ug/L 20.0-0.0151 105 75-125 Thallium 22.7 1.00 ug/L 20.0 0.0450 113 75-125 Batch OD27O1O - EPA 3OO5A Blank (OD27010-BLK1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L LCS (OD27030-BS1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:46 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits Arsenic 193 10.0 ug/L 200 97 80-120 Barium 190 10.0 ug/L 200 95 80-120 Beryllium 18.6 1.00 ug/L 20.0 93 80-120 Cadmium 19.2 1.00 ug/L 20.0 96 80-120 Chromium 185 10.0 ug/L 200 93 80-120 Cobalt 195 10.0 ug/L 200 98 80-120 Copper 186 10.0 ug/L 200 93 80-120 Lead 192 10.0 ug/L 200 96 80-120 RPD RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full Page 13 of 19 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD27O1O - EPA 3OO5A - Continued LCS (OD27010-BSI) Continued Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:46 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nickel 188 10.0 ug/L 200 94 80-120 Selenium 194 10.0 ug/L 200 97 80-120 Silver 188 10.0 ug/L 200 94 80-120 Vanadium 184 10.0 ug/L 200 92 80-120 Zinc 193 10.0 ug/L 200 97 80-120 Matrix Spike (OD27030-MS1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:48 Source: CD01673-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 183 10.0 ug/L 200 7.60 U 91 75-125 Barium 381 10.0 ug/L 200 200 90 75-125 Beryllium 22.0 1.00 ug/L 20.0 3.44 93 75-125 Cadmium 18.8 1.00 ug/L 20.0 0.360 U 94 75-125 Chromium 183 10.0 ug/L 200 1.40 U 92 75-125 Cobalt 192 10.0 ug/L 200 1.40 U 96 75-125 Copper 183 10.0 ug/L 200 1.60 U 91 75-125 Lead 190 10.0 ug/L 200 3.10 U 95 75-125 Nickel 184 10.0 ug/L 200 2.20 U 92 75-125 Selenium 194 10.0 ug/L 200 6.20 U 97 75-125 Silver 184 10.0 ug/L 200 1.90 U 92 75-125 Vanadium 183 10.0 ug/L 200 1.40 U 91 75-125 Zinc 193 10.0 ug/L 200 4.40 U 97 75-125 Matrix Spike Dup (OD27010-MSD1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:51 Source: CD01673-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 190 10.0 ug/L 200 7.60 U 95 75-125 4 20 Barium 387 10.0 ug/L 200 200 93 75-125 2 20 Beryllium 22.3 1.00 ug/L 20.0 3.44 94 75-125 1 20 Cadmium 19.2 1.00 ug/L 20.0 0.360 U 96 75-125 2 20 Chromium 186 10.0 ug/L 200 1.40 U 93 75-125 2 20 Cobalt 196 10.0 ug/L 200 1.40 U 98 75-125 2 20 Copper 186 10.0 ug/L 200 1.60 U 93 75-125 2 20 Lead 194 10.0 ug/L 200 3.10 U 97 75-125 2 20 Nickel 187 10.0 ug/L 200 2.20 U 93 75-125 1 20 Selenium 191 10.0 ug/L 200 6.20 U 95 75-125 2 20 Silver 186 10.0 ug/L 200 1.90 U 93 75-125 1 20 Vanadium 186 10.0 ug/L 200 1.40 U 93 75-125 2 20 Zinc 199 10.0 ug/L 200 4.40 U 100 75-125 3 20 Post Spike (OD27010-PS1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:53 Source: CD01673-02 Spike Source Analvte Result Flaq POL Units Level Result %REC Arsenic 0.187 0.0100 mg/L 0.200 -0.00583 93 Barium 0.395 0.0100 mg/L 0.200 0.200 97 Beryllium 0.0231 0.00100 mg/L 0.0200 0.00344 98 Cadmium 0.0200 0.00100 mg/L 0.0200 -0.000201 100 Chromium 0.194 0.0100 mg/L 0.200 0.000281 97 %REC Limits RPD 80-120 80-120 80-120 80-120 80-120 RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 Of 19 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD27O1O - EPA 3OO5A - Continued Post Spike (OD27010-PS1) Continued Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:53 Source: CD01673-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cobalt 0.206 0.0100 mg/L 0.200 0.000733 103 80-120 Copper 0.195 0.0100 mg/L 0.200 0.000500 97 80-120 Lead 0.202 0.0100 mg/L 0.200 0.00180 100 80-120 Nickel 0.194 0.0100 mg/L 0.200 -0.00177 97 80-120 Selenium 0.203 0.0100 mg/L 0.200 -0.00224 101 80-120 Silver 0.189 0.0100 mg/L 0.200 0.000553 94 80-120 Vanadium 0.194 0.0100 mg/L 0.200 0.000364 97 80-120 Zinc 0.200 0.0100 mg/L 0.200 0.00302 99 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD27O3O - EPA 5O3OB MS Blank (OD27030-BLK3) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 10:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 5.1 u91L 5.00 102 75-125 LCS (OD27030-BSI) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 09:21 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 97 80-133 Toluene-d8 4.9 u91L 5.00 96 75-125 Matrix Spike (OD27030-MS1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:14 Source: AD02710-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 95 80-133 Toluene-& 5.2 u91L 5.00 104 75-125 Matrix Spike Dup (OD27030-MSD1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:39 Source: AD02710-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 0.80 U 98 80-133 3 19 Toluene-& 4.9 u91L 5.00 98 75-125 Batch OD29O36 - EPA 5O3OB MS Blank (OD29036-BLKI) Prepared: 04/29/2020 00:00 Analyzed: 04/29/2020 09:51 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-& 5.2 u91L 5.00 104 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 15 Of 19 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD29O36 - EPA 5O3OB MS - Continued LCS (OD29036-BSI) Prepared: 04/29/2020 00:00 Analyzed: 04/29/2020 09:25 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 101 80-133 Toluene-d8 5.0 u9/L 5.00 100 75-125 Matrix Spike (OD29036-MS1) Prepared: 04/29/2020 00:00 Analyzed: 04/29/2020 14:09 Source: AD02767-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 38 2.0 ug/L 25.0 16 88 80-133 Toluene-d8 4.9 u9/L 5.00 98 75-125 Matrix Spike Dup (OD29036-MSD1) Prepared: 04/29/2020 00:00 Analyzed: 04/29/2020 14:35 Source: AD02767-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 39 2.0 ug/L 25.0 16 91 80-133 2 19 Toluene-d8 5.1 u9/L 5.00 102 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 16 Of 19 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 17 of 19 W r Q z JJ P r� O o : .0 I C 0 (D p c CD CJNQ O w q CD n U] m m a �' = 3 -3 L] 3 m fa m w _ Page 18 of 19 Sample Preservation Verification ENCO Cary CG) Work Order: CD06349 Project: White Street LF-Phase II Client: Golder Associates, Inc. (GO007) Project #: 1668421.107 Logged In: 23-Apr-20 11:15 _ Logged By: John C King , r Preservation Check Performed By: I Date/Time: �-I - Z3' O 1 CD06349-01 Cant Type Pres (pH) pH Ghe ed / pH Adjusted Date�me Reagent Used/Comments Requirement In Control Adjusted A 250inLP+HNO3 <2 ( Y I N I NA YIN / NA CD06349-02 Cont Type Pres (pH) pH Ghecked / pH Adjusted DateMme Reagent Used/Comments Requirement In Control Adjusted A 25QmLP+HNO3 <2 11 1 N/ NA Y I IV 1 NA CD06349-03 Cant Type Pres (pH) Requirement pH Checked 1 In Control pH Adjusted Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 �_V/ N / NA Y / Nz l NA Rea ent Name ID 1 2 'y pH Strip ID: Reacient Name ID 3 4 Reacient Name ID 5 6 Page 19 of 19 C:IELMNTIPrintlwko_PreservationCheck.rpt Y = I WORK ORDER Printed: 5/8/2020 11:47:03AM CD06349 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Daniel B. Mays Project: White Street LF-Phase II Project Number: 1668421.107 PO #: Report To: Golder Associates, Inc. (G0007) Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 Phone: (336) 852-4903 Fax: (336) 852-4904 Invoice To: City of Greensboro (CI034) Richard Lovett 401 Patton Ave Greensboro, NC 27406 Phone :(336) 373-4188 Fax: Received By: John C King Date Received: 23-Apr-20 10:21 Logged In By: John C King Date Logged In: 23-Apr-20 11:15 Work Order Comments: C-2142 received at 0.7°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 GOLDER ASSOCIATES INC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 4 Project Name: White Street Landfill — Phase II Project Reference Number_ 19131339.101 Sampling Event Date: April 20-23, 2020 Review Date: June 8, 2020 Report #: CD05204, CDO6349 k> GOLDEP Initials: NTT Initials: r ae 6. x & "z-a?-6' Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain -of -custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: Region III Modifications to Functional Guidelines for Organic Data Review Multi -Media, Multi -Concentration, September 1994; Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998, COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed 1=acilitylC & D List NC Appendix I INC Appendix I + Detects X NC Appendix II NC Subtitle D Leachate List 16 Mif0 1.0 CHAIN OF CUSTODY (COC) REVIEW NTT COC was properly signed by all parties. NTT Correct project name and number are on the form. Incorrected project number on COC. should be 19131339.101 NTT Sample receipt condition at laboratory was acceptable_ NTT Each sample and blank submitted for analysis appears in the report. COLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL k4o GOLDEP LABORATORY DATA REVIEW Page 2 of 4 2.0 SAMPLE HOLDING TIMES NTT Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). Review Criteria Method Anal tea Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature re uirements SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 NitratelSulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days NTT Laboratory analyzed at least one internal blank for each method, where applicable. NTT Laboratory blank is interference -free. NTT Surrogate recoveries are provided for each analytical method, where applicable. NTT Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range)_ NTT MS/MSD/LCS data results are provided for each analytical method. (CD05204) Exception 4M-11 was appened to sample M5D1 for 1,1-Dichloroethene because the precision between duplicate matrix spikes of the same sample was outside acceptable limits. NTT MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). 4.0 ANALYTE LISTS/METHODS NTT The proper number of constituents are present for each analyte list as identified above (including detects where applicable). NTT Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING NTT All analytical reporting associated with the event was performed by the contracted lab. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW 14,* GOLDER Page 3 of 4 NTT Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been `flagged' with a `B' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 10X for commonly detected laboratory contaminants -acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. NTT It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 90x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. Antimony, Thallium, and Selenium (2X) at II-1,il-2,11-3,11-4A,li-fill-7,11-7B,llf- 8, and MW-14 1,4-Dioxane (20x) at II-8 �- 1,4-Dioxane (5x) at 11.1, 11.6 NTT The report provides the reporting limit for each constituent. NTT The results were reported at or below their proper reporting limits (e.g., MDLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. NTT_ No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Interim Maximum Allowable Concentrations (IMACs) in wells or field/equipment/trip blanks or above applicable Surface Water Standards for surface water points. 1,4-Dichlorobenzene(NUL=6 ug L� • II 1 @ 7.5 ugfL f Cobalt (IMAC = I ug/L) • II 1 @ 21.0 ug1L II 3 @ 5.62 ugfL (J) + 115 @ 8.99 ug1L (J) • 116 @ 15.3 ugfL • II 8 @ 4.17 ug1L (J) II 12 @ 2.19 ugfL (J) Vanadium LIMA = 0.3 ug/L) • 112 @ 1.79 ugfL (J) • 113 @ 1.81 uglL(J) II 4A @ 3.09 ugfL (J) • 115 @ 2.56 u91L (J) + II 8 @ 3.66 ug1L (J) • II 12 @ 1.90 ugfL (J) :- Vinyl Chloride (NC 2L = 0.03 ygIL) 112 @ 1.3 ug1L 14-dioxane (NC 2L = 3.0 ug/L} • 111 @ 170 ugfL + I13@1.0ugfL(J) + 114A @ 69 ug1L • II 5 @ 3.2 ug1L • 116 @ 33 ugfL + 117 @ 5.8ugfL ■ II 8 [?a 310 u g1L • II 12 @ 4.0 ugfL NTT No quantifiable inorganic or organic constituents were detected in a well or surface GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL GOLDER LABORATORY DATA REVIEW Page 4 of 4 water point at concentrations outside of their historical range (more than 5X previous concentrations ❑r first-time detections). First time detection of 1,4-Dioxane in 11-3 at 1.0ug1L (J) NTT Other report issues/Communications with laboratory/etc.: ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Wednesday, June 17, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.107, Project Name/Desc: White Street LF-Phase II Non -Routine ENCO Workorder(s): CDO5205 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Wednesday, April 22, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Daniel B. Mays Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of ZO (� �Eo www.encolabs.com PROJECT NARRATIVE Date: 17 June 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase II Non -Routine Lab ID: CD05205 Overview This report is an amendment to the original report dated May 8, 2020 for this work order. This report was revised, at the client's request, to only report selenium by EPA method 601 OD. Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples QM-11 was added to sample MSD1 because precision between duplicate matrix spikes of the same sample was outside acceptable limits. QV-01 was applied to samples 4103-SMW1, 4103-113B, and 4103-Trip Blank because the continuing calibration verification standard exhibited high bias, since the result is non -detect there is no impact. Quality Control Remarks No Comments Other Comments The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Daniel Mays Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of 20 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-SMW1 Lab ID: CD05205-01 Sampled: 04/21/20 16:38 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/24/20 10:06 05/07/20 14:34 EPA 6020E EPA 3005A 10/18/20 04/24/20 10:28 04/28/20 13:27 EPA 8260D EPA 503013_MS 05/05/20 04/24/20 00:00 04/24/20 11:57 EPA 8260D EPA 503013_MS 05/05/20 04/29/20 16:44 04/30/20 20:12 Client ID: 4303-II3B Lab ID: CD05205-02 Sampled: 04/21/20 13:11 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/24/20 10:06 05/07/20 10:57 EPA 6020E EPA 3005A 10/18/20 04/24/20 10:28 04/28/20 13:31 EPA 8260D EPA 503013_MS O5/05/20 04/24/20 00:00 04/24/20 12:48 EPA 8260D EPA 503013_MS 05/05/20 04/29/20 16:44 04/30/20 20:45 Client ID: 4303-Trip Blank Lab ID: CD05205-03 Sampled: 04/21/20 13:11 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/05/20 04/24/20 00:00 04/24/20 13:14 EPA 8260D EPA 503013_MS 05/05/20 04/29/20 16:45 05/01/20 04:18 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 2O (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-SMW1 Lab ID: CD05205-01 Analvte Results Flag MDL Q Units Method Notes 1,4-Dioxane 0.93 J 0.80 2.0 ug/L EPA 8260D Barium - Total 91.5 1.10 10.0 ug/L EPA 6010D Cadmium - Total 4.96 0.360 1.00 ug/L EPA 6010D Cobalt - Total 24.8 1.40 10.0 ug/L EPA 6010D Copper - Total 2.76 J 1.60 10.0 ug/L EPA 6010D Vanadium - Total 1.84 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 394 4.40 10.0 ug/L EPA 6010D Client ID: 4303-II3B Lab ID: CD05205-02 Analvte Results Flag MDL Q Units Method Notes 1,1-Dichloroethane 0.72 J 0.13 1.0 ug/L EPA 8260D 1,4-Dioxane 3.5 0.80 2.0 ug/L EPA 8260D Barium - Total 155 1.10 10.0 ug/L EPA 6010D Cobalt - Total 1.62 J 1.40 10.0 ug/L EPA 6010D Nickel - Total 2.51 J 2.20 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 of 20 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW1 Lab Sample ID:CD05205-01 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 16:38 Work Order: CD05205 Project: White Street LF-Phase II Non -Routine Sampled By: Nicolas Tejada Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 OD29042 EPA 8260D 04/30/20 20:12 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Acetone [67-64-1]A 10 u ug/L 1 10 20 OD29042 EPA 8260D 04/30/20 20:12 CMK Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 OD29042 EPA 8260D 04/30/20 20:12 CMK Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 OD29042 EPA 8260D 04/30/20 20:12 CMK QV-01 Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Styrene [100-42-5]A 0.11 u ug/L 1 0.11 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 OD29042 EPA 8260D 04/30/20 20:12 CMK Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 OD29042 EPA 8260D 04/30/20 20:12 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 Of 20 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW1 Lab Sample ID:CD05205-01 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 16:38 Work Order: CD05205 Project: White Street LF-Phase II Non -Routine Sampled By: Nicolas Tejada Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 45 1 50.0 90 % 53-136 OD29042 EPA 826OD 04130120 20:12 CMK Dibromofluoromethane 44 1 50.0 87 % 67-129 OD29042 EPA 826OD 04130120 20:12 CMK Toluene-d8 47 1 50.0 94 % 59-134 OD29042 EPA 626OD 04130120 20:12 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-0]A 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 13:27 RLF Arsenic[7440-38-2]A 7.60 U ug/L 1 7.60 10.0 OD24018 EPA 6010D 05/07/20 14:34 JDH Barium [7440-39-3]^ 91.5 ug/L 1 1.10 10.0 OD24018 EPA 6010D 05/07/20 14:34 JDH Beryllium [7440-41-7]A 0.160 U ug/L 1 0.160 1.00 OD24018 EPA 6010D 05/07/20 14:34 JDH Cadmium [7440-43-9]^ 4.96 ug/L 1 0.360 1.00 OD24018 EPA 6010D 05/07/20 14:34 JDH Chromium [7440-47-3]A 1.40 U ug/L 1 1.40 10.0 OD24018 EPA 6010D 05/07/20 14:34 JDH Cobalt[7440-48-4]^ 24.8 ug/L 1 1.40 10.0 OD24018 EPA 6010D 05/07/20 14:34 JDH Copper[7440-50-8]^ 2.76 J ug/L 1 1.60 10.0 OD24018 EPA 6010D 05/07/20 14:34 JDH Lead [7439-92-1]A 3.10 U ug/L 1 3.10 10.0 OD24018 EPA 6010D 05/07/20 14:34 JDH Nickel[7440-02-0]A 2.20 U ug/L 1 2.20 10.0 OD24018 EPA 6010D 05/07/20 14:34 JDH Selenium [7782-49-2]A 6.20 U ug/L 1 6.20 10.0 OD24018 EPA 6010D 05/07/20 14:34 JDH Silver [7440-22-4]A 1.90 U ug/L 1 1.90 10.0 OD24018 EPA 6010D 05/07/20 14:34 JDH Thallium [7440-28-0]A 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 13:27 RLF Vanadium [7440-62-2]^ 1.84 J ug/L 1 1.40 10.0 OD24018 EPA 6010D 05/07/20 14:34 JDH Zinc[744O-66-6]^ 394 ug/L 1 4.40 10.0 OD24018 EPA 6010D 05/07/20 14:34 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution A - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes 1,4-Dioxane [123-91-1]^ 0.93 J ug/L 1 0.80 2.0 OD24032 EPA 8260D 04/24/20 11:57 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.1 1 5.00 101 % 75-125 OD24032 EPA 826OD 0412412011:57 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 2O 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II3B Lab Sample ID:CDO5205-02 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 13:11 Work Order: CDO5205 Project: White Street LF-Phase II Non -Routine Sampled By: Nicolas Tejada Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 1,1-Dichloroethane [75-34-3]A 0.72 J ug/L 1 0.13 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 OD29042 EPA 8260D 04/30/20 20:45 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Acetone [67-64-1]^ 10 u ug/L 1 10 20 OD29042 EPA 8260D 04/30/20 20:45 CMK Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 OD29042 EPA 8260D 04/30/20 20:45 CMK Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Carbon disulfide [75-15-O]A 1.5 u ug/L 1 1.5 5.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Chlorobenzene [108-90-7]^ 0.17 u ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Ethylbenzene [100-41-4]^ 0.13 u ug/L 1 0.13 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 OD29042 EPA 8260D 04/30/20 20:45 CMK QV-01 Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Styrene[100-42-5]^ 0.11 u ug/L 1 0.11 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK trans-1,3-Dichloropropene [10061-02-6]A 0.15 u ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 OD29042 EPA 8260D 04/30/20 20:45 CMK Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 OD29042 EPA 8260D 04/30/20 20:45 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 Of 20 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II313 Lab Sample ID:CD05205-02 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 13:11 Work Order: CD05205 Project: White Street LF-Phase II Non -Routine Sampled By: Nicolas Tejada Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 44 1 50.0 88 % 53-136 OD29042 EPA 826OD 04130120 20:45 CMK Dibromofluoromethane 47 1 50.0 94 % 67-129 OD29042 EPA 826OD 04130120 20:45 CMK Toluene-d8 45 1 50.0 91 % 59-134 OD29042 EPA 626OD 04130120 20:45 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 13:31 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD24018 EPA 6010D 05/07/20 10:57 JDH Barium [7440-39-3]^ 155 ug/L 1 1.10 10.0 OD24018 EPA 6010D 05/07/20 10:57 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD24018 EPA 6010D 05/07/20 10:57 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD24018 EPA 6010D 05/07/20 10:57 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD24018 EPA 6010D 05/07/20 10:57 JDH Cobalt[7440-48-4]^ 1.62 J ug/L 1 1.40 10.0 OD24018 EPA 6010D 05/07/20 10:57 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 OD24018 EPA 6010D 05/07/20 10:57 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD24018 EPA 6010D 05/07/20 10:57 JDH Nickel[7440-02-O]^ 2.51 J ug/L 1 2.20 10.0 OD24018 EPA 6010D 05/07/20 10:57 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD24018 EPA 6010D 05/07/20 10:57 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD24018 EPA 6010D 05/07/20 10:57 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 13:31 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OD24018 EPA 6010D 05/07/20 10:57 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD24018 EPA 6010D 05/07/20 10:57 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes 1,4-Dioxane [123-91-1]^ 3.5 ug/L 1 0.80 2.0 OD24032 EPA 8260D 04/24/20 12:48 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 98 % 75-125 OD24032 EPA 826OD 0412412012:48 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 2O 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103-Trip Blank Lab Sample ID:CD05205-03 Received: 04/22/20 13:55 Matrix: Water Sampled:04/21/20 13:11 Work Order: CD05205 Project: White Street LF-Phase II Non -Routine Sampled By: ENCO Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 OD29043 EPA 8260D 05/01/20 04:18 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 OD29043 EPA 8260D 05/01/20 04:18 CMK Acetone [67-64-1]A 10 u ug/L 1 10 20 OD29043 EPA 8260D 05/01/20 04:18 CMK Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 OD29043 EPA 8260D 05/01/20 04:18 CMK Benzene [71-43-2]A 0.15 u ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK QV-01 Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK Styrene [100-42-5]A 0.11 u ug/L 1 0.11 1.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 OD29043 EPA 8260D 05/01/20 04:18 CMK Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 OD29043 EPA 8260D 05/01/20 04:18 CMK Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 OD29043 EPA 8260D 05/O1/20 04:18 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 Of 20 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-Trip Blank Lab Sample ID:CD05205-03 Received: 04/22/20 13:55 Matrix: Water Sampled:04/21/20 13:11 Work Order: CD05205 Project: White Street LF-Phase II Non -Routine Sampled By: ENCO Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 91 % 53-136 OD29043 EPA 826OD 05101120 04:18 CMK Dibromofluoromethane 44 1 50.0 87 % 67-129 OD29043 EPA 826OD 05101120 04:18 CMK Toluene-d8 46 1 50.0 91 % 59-134 OD29043 EPA 626OD 05101120 04:18 CMK Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL POLL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OD24032 EPA 8260D 04/24/20 13:14 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 4.9 1 5.00 97 % 75-125 OD24032 EPA 826OD 0412412013:14 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 Of 20 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OD29042 - EPA 5030B MS Blank (OD29042-BLK1) Prepared: 04/29/2020 16:48 Analyzed: 04/30/2020 13:12 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 45 u9/L 50.0 89 53-136 Dibromofluoromethane 44 u9/L 50.0 87 67-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 11 of 20 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OD29O42 - EPA 5O3OB MS - Continued Blank (OD29042-BLK1) Continued Prepared: 04/29/2020 16:48 Analyzed: 04/30/2020 13:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 46 u9/L 50.0 92 59-134 LCS (OD29042-BS1) Prepared: 04/29/2020 16:48 Analyzed: 04/30/2020 11:35 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 109 75-133 Benzene 22 1.0 ug/L 20.0 111 80-134 Chlorobenzene 20 1.0 ug/L 20.0 100 80-120 Toluene 19 1.0 ug/L 20.0 97 71-120 Trichloroethene 23 1.0 ug/L 20.0 117 74-120 Matrix Spike (OD29042-MS1) Prepared: 04/29/2020 16:48 Analyzed: 04/30/2020 11:02 Source: CD06682-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 17 1.0 ug/L 20.0 0.21 U 87 75-133 Benzene 19 1.0 ug/L 20.0 0.15 U 94 80-134 Chlorobenzene 18 1.0 ug/L 20.0 0.17 U 88 80-120 Toluene 17 1.0 ug/L 20.0 0.14 U 87 71-120 Trichloroethene 20 1.0 ug/L 20.0 0.15 U 101 74-120 Matrix Spike Dup (OD29042-MSD1) Prepared: 04/29/2020 16:48 Analyzed: 04/30/2020 12:07 Source: CD06682-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 0.21 U 108 75-133 22 20 QM-11 Benzene 18 1.0 ug/L 20.0 0.15 U 89 80-134 5 17 Chlorobenzene 16 1.0 ug/L 20.0 0.17 U 81 80-120 8 16 Toluene 16 1.0 ug/L 20.0 0.14 U 79 71-120 11 17 Trichloroethene 18 1.0 ug/L 20.0 0.15 U 92 74-120 10 22 Batch OD29O43 - EPA 5O3OB MS Blank (OD29043-BLK3) Prepared: 04/29/2020 16:47 Analyzed: 05/01/2020 02:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 Of 20 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OD29O43 - EPA 5O3OB MS - Continued Blank (OD29043-BLK1) Continued Prepared: 04/29/2020 16:47 Analyzed: 05/O1/2020 02:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L 4-Bromofluorobenzene 45 ug/L 50.0 90 53-136 Dibromofluoromethane 44 u9/L 50.0 69 67-129 Toluene-d8 46 u9/L 50.0 93 59-134 LCS (OD29043-BSI) Prepared: 04/29/2020 16:47 Analyzed: 05/01/2020 00:32 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 20 1.0 ug/L 20.0 98 75-133 Benzene 21 1.0 ug/L 20.0 106 80-134 Chlorobenzene 18 1.0 ug/L 20.0 91 80-120 Toluene 18 1.0 ug/L 20.0 92 71-120 Trichloroethene 21 1.0 ug/L 20.0 103 74-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 Of 20 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OD29O43 - EPA 5O3OB MS - Continued (� �Eo www.encolabs.com Matrix Spike (OD29043-MS1) Prepared: 04/29/2020 16:47 Analyzed: 05/01/2020 01:04 Source: CD06682-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 20 1.0 ug/L 20.0 0.21 U 98 75-133 Benzene 21 1.0 ug/L 20.0 0.15 U 107 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 96 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 95 71-120 Trichloroethene 23 1.0 ug/L 20.0 0.15 U 115 74-120 Matrix Spike Dup (OD29043-MSD1) Prepared: 04/29/2020 16:47 Analyzed: 05/01/2020 01:36 Source: CD06682-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 18 1.0 ug/L 20.0 0.21 U 89 75-133 10 20 Benzene 20 1.0 ug/L 20.0 0.15 U 101 80-134 6 17 Chlorobenzene 17 1.0 ug/L 20.0 0.17 U 86 80-120 12 16 Toluene 17 1.0 ug/L 20.0 0.14 U 85 71-120 11 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 104 74-120 10 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O18 - EPA 3OO5A Blank (OD24018-BLK1) Prepared: 04/24/2020 10:06 Analyzed: 05/07/2020 10:38 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L Blank (OD24018-BLK2) Prepared: 04/24/2020 10:06 Analyzed: 05/07/2020 10:54 Analvte Result Flaq POL Units Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 Of 20 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O1B - EPA 3OO5A - Continued Blank (OD24018-BLK2) Continued Prepared: 04/24/2020 10:06 Analyzed: 05/07/2020 10:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L LCS (OD24018-BSI) Prepared: 04/24/2020 10:06 Analyzed: 05/07/2020 11:00 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 199 10.0 ug/L 200 100 80-120 Barium 199 10.0 ug/L 200 99 80-120 Beryllium 19.5 1.00 ug/L 20.0 97 80-120 Cadmium 19.6 1.00 ug/L 20.0 98 80-120 Chromium 195 10.0 ug/L 200 97 80-120 Cobalt 203 10.0 ug/L 200 102 80-120 Copper 193 10.0 ug/L 200 96 80-120 Lead 203 10.0 ug/L 200 101 80-120 Nickel 198 10.0 ug/L 200 99 80-120 Selenium 209 10.0 ug/L 200 105 80-120 Silver 194 10.0 ug/L 200 97 80-120 Vanadium 194 10.0 ug/L 200 97 80-120 Zinc 196 10.0 ug/L 200 98 80-120 Matrix Spike (OD24018-MS1) Prepared: 04/24/2020 10:06 Analyzed: 05/07/2020 11:02 Source: CD05205-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 182 10.0 ug/L 200 7.60 U 91 75-125 Barium 349 10.0 ug/L 200 155 97 75-125 Beryllium 18.2 1.00 ug/L 20.0 0.160 U 91 75-125 Cadmium 18.8 1.00 ug/L 20.0 0.360 U 94 75-125 Chromium 182 10.0 ug/L 200 1.40 U 91 75-125 Cobalt 190 10.0 ug/L 200 1.62 94 75-125 Copper 182 10.0 ug/L 200 1.60 U 91 75-125 Lead 187 10.0 ug/L 200 3.10 U 94 75-125 Nickel 194 10.0 ug/L 200 2.51 96 75-125 Selenium 187 10.0 ug/L 200 6.20 U 94 75-125 Silver 183 10.0 ug/L 200 1.90 U 92 75-125 Vanadium 183 10.0 ug/L 200 1.40 U 92 75-125 Zinc 190 10.0 ug/L 200 4.40 U 95 75-125 Matrix Spike Dup (OD24018-MSD1) Prepared: 04/24/2020 10:06 Analyzed: 05/07/2020 11:05 Source: CD05205-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 178 10.0 ug/L 200 7.60 U 89 75-125 2 20 Barium 345 10.0 ug/L 200 155 95 75-125 1 20 Beryllium 18.2 1.00 ug/L 20.0 0.160 U 91 75-125 0.1 20 Cadmium 18.4 1.00 ug/L 20.0 0.360 U 92 75-125 2 20 Chromium 182 10.0 ug/L 200 1.40 U 91 75-125 0.08 20 Cobalt 187 10.0 ug/L 200 1.62 93 75-125 2 20 Copper 183 10.0 ug/L 200 1.60 U 92 75-125 0.4 20 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 15 of 20 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O1B - EPA 3OO5A - Continued Matrix Spike Dup (OD24018-MSDS) Continued Prepared: 04/24/2020 10:06 Analyzed: 05/07/2020 11:05 Source: CD05205-02 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Lead 184 10.0 ug/L 200 3.10 U 92 75-125 2 20 Nickel 190 10.0 ug/L 200 2.51 94 75-125 2 20 Selenium 186 10.0 ug/L 200 6.20 U 93 75-125 0.8 20 Silver 183 10.0 ug/L 200 1.90 U 92 75-125 0.001 20 Vanadium 183 10.0 ug/L 200 1.40 U 92 75-125 0.1 20 Zinc 188 10.0 ug/L 200 4.40 U 94 75-125 1 20 Post Spike (OD24018-PS1) Prepared: 04/24/2020 10:06 Analyzed: 05/07/2020 11:07 Source: CD05205-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 0.189 0.0100 mg/L 0.200 -0.00177 95 80-120 Barium 0.350 0.0100 mg/L 0.200 0.155 98 80-120 Beryllium 0.0185 0.00100 mg/L 0.0200 -2.36E-5 92 80-120 Cadmium 0.0191 0.00100 mg/L 0.0200 -0.000330 95 80-120 Chromium 0.185 0.0100 mg/L 0.200 0.000543 92 80-120 Cobalt 0.193 0.0100 mg/L 0.200 0.00162 95 80-120 Copper 0.186 0.0100 mg/L 0.200 0.00120 92 80-120 Lead 0.190 0.0100 mg/L 0.200 0.00272 93 80-120 Nickel 0.196 0.0100 mg/L 0.200 0.00251 97 80-120 Selenium 0.192 0.0100 mg/L 0.200 -0.00961 96 80-120 Silver 0.176 0.0100 mg/L 0.200 0.000393 88 80-120 Vanadium 0.186 0.0100 mg/L 0.200 0.000527 93 80-120 Zinc 0.193 0.0100 mg/L 0.200 0.00226 95 80-120 Batch OD24O21 - EPA 3OO5A Blank (OD24021-BLK3) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:44 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (OD24021-BS3) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:48 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Antimony 20.9 1.00 ug/L 20.0 105 80-120 Selenium 21.5 1.00 ug/L 20.0 107 80-120 Thallium 21.0 1.00 ug/L 20.0 105 80-120 Matrix Spike (OD24021-MS3) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:52 Source: CD05553-01 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Antimony 42.1 2.00 ug/L 40.0 0.740 U 105 75-125 Selenium 38.8 2.00 ug/L 40.0 1.82 U 97 75-125 Thallium 40.7 2.00 ug/L 40.0 0.220 U 102 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 16 Of 20 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O21 - EPA 3OO5A - Continued Matrix Spike Dup (OD24021-MSDS) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:56 Source: CD05553-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.7 2.00 ug/L 40.0 0.740 U 107 75-125 1 20 Selenium 41.3 2.00 ug/L 40.0 1.82 U 103 75-125 6 20 Thallium 41.3 2.00 ug/L 40.0 0.220 U 103 75-125 2 20 Post Spike (OD24021-PS3) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 12:05 Source: CD0SS53-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.5 1.00 ug/L 20.0 0.00516 108 75-125 Selenium 19.7 1.00 ug/L 20.0 0.0825 98 75-125 Thallium 21.3 1.00 ug/L 20.0 0.00474 107 75-125 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD24O32 - EPA 5O3OB MS Blank (OD24032-BLK3) Prepared: 04/24/2020 00:00 Analyzed: 04/24/2020 11:28 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-& 4.8 u91L 5.00 96 75-125 LCS (OD24032-BSI) Prepared: 04/24/2020 00:00 Analyzed: 04/24/2020 10:31 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 23 2.0 ug/L 25.0 94 80-133 Toluene-& 4.9 u91L 5.00 99 75-125 Matrix Spike (OD24032-MS1) Prepared: 04/24/2020 00:00 Analyzed: 04/24/2020 20:55 Source: CD05205-02 Spike Source %REC RPD Analvte Result Flaa Q Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 28 2.0 ug/L 25.0 3.5 96 80-133 Toluene-& 5.0 u91L 5.00 99 75-125 Matrix Spike Dup (OD24032-MSDS) Prepared: 04/24/2020 00:00 Analyzed: 04/27/2020 08:56 Source: CD05205-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 27 2.0 ug/L 25.0 3.5 95 80-133 0.6 19 Toluene-d8 4.9 u91L 5.00 99 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 17 Of 20 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QM-11 Precision between duplicate matrix spikes of the same sample was outside acceptance limits. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 18 of 2O a 3 m m n n m � m v 0 � � N a C o 0 O � tEA N N - ce � m m ii N 9 l t0 N W q - `4\Y l N M N fp 0. 1L 0. N (1 tzs T n O a o D � A� '0 g 41 t° LT �. W o m a n ro ps m Sample Preservation Verification ENCO Cary Work Order: CD05205 Client: Golder Associates, Inc. (GO007) Project: White Street LF-Phase II Non -Routine Project #: 1668421.107 Logged In: 22-Apr-20 14:50 Logged By: John C King Preservation Check Performed By: �k Date/Time: CDO5205-01 Cont T e Yp Pres (pH) pH Checked I Requirement In Control DateMme pH Adjusted Adjusted Reagent UsedlComments A 250mLP*HNO3 <2 N / NA Y /Cty 1 NA CDO5205-02 Cant Type Pres (pH} Requirement pH Checked I In Control pH Adjusted DateMme Adjusted Reagent UsedlComments A 250m1_P+HNO3 <2 Y: / N I NA Y I N 1 NA Rea ent Name ID 1 2 pH Strip ID: cic� Rea ent Name ID 3 4 Rea ent Name ID 5 6 Page 20 of 20 C:IELMNTIPrintlwko_Preservation Check. rpt r - i . WORK ORDER Printed: 5/8/2020 8:10:13AM CD05205 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Daniel B. Mays Project: White Street LF-Phase II Non -Routine Project Number: 1668421.107 PO #: Report To: Invoice To: Golder Associates, Inc. (G0007) City of Greensboro (CI034) Dusty Reedy Richard Lovett 5B Oak Branch Drive 401 Patton Ave Greensboro, NC 27407 Greensboro, NC 27406 Phone: (336) 852-4903 Phone :(336) 373-4188 Fax: (336) 852-4904 Fax: Received By: John C King Date Received: 22-Apr-20 13:55 Logged In By: John C King Date Logged In: 22-Apr-20 14:50 Work Order Comments: C-403 received at 1.1°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Wednesday, June 17, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.107, Project Name/Desc: White Street LF-Phase II Non -Routine ENCO Workorder(s): CD06348 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Thursday, April 23, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Daniel B. Mays Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of 9 PROJECT NARRATIVE Date: 17 June 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase II Non -Routine Lab ID: CD06348 Overview (� �Eo www.encolabs.com This report is an amendment to the original report dated May 11, 2020 for this work order. This report was revised, at the client's request, to only report selenium by EPA method 601 OD. Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples QV-01 was appended to samples SMW-3, SMW-4, and II-9 for analysis Bromochloromethane, Carbon tetrachloride, Chloroform, and Dibromomethane because the associated continuing calibration verification standard exhibited high bias; since the result is non -detect for the analyte there is no impact on data quality. Quality Control Remarks No Comments Other Comments The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Daniel Mays Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of 19 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-SMW3 Lab ID: CD06348-01 Sampled: 04/22/20 13:09 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:40 05/07/20 17:13 EPA 6020E EPA 3005A 10/19/20 04/24/20 10:38 04/28/20 16:11 EPA 8260D EPA 503013_MS 05/06/20 04/27/20 00:00 04/27/20 15:24 EPA 8260D EPA 503013_MS 05/06/20 05/04/20 15:59 05/05/20 08:17 Client ID: 4303-SMW4 Lab ID: CD06348-02 Sampled: 04/22/20 11:52 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:40 05/07/20 17:15 EPA 6020E EPA 3005A 10/19/20 04/24/20 10:38 04/28/20 16:15 EPA 8260D EPA 503013_MS O5/06/20 04/27/20 00:00 04/27/20 15:49 EPA 8260D EPA 503013_MS 05/06/20 05/04/20 15:59 05/05/20 08:50 Client ID: 4103-II9 Lab ID: CD06348-03 Sampled: 04/22/20 10:49 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:40 05/07/20 17:28 EPA 6020B EPA 3005A 10/19/20 04/24/20 10:38 04/28/20 16:19 EPA 8260D EPA 503013_MS 05/06/20 05/04/20 15:59 05/05/20 09:22 Client ID: 43034I9 Lab ID: CD06348-03RE1 Sampled: 04/22/20 10:49 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/06/20 04/29/20 00:00 04/29/20 10:19 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 19 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-SMW3 Lab ID: CD06348-01 Analvte Results Flag MDL Q Units Method Notes 1,1-Dichloroethane 3.6 0.13 1.0 ug/L EPA 8260D 1,4-Dioxane 2.4 0.80 2.0 ug/L EPA 8260D Barium - Total 295 1.10 10.0 ug/L EPA 6010D cis-1,2-Dichloroethene 10 0.15 1.0 ug/L EPA 8260D Cobalt - Total 1.55 J 1.40 10.0 ug/L EPA 6010D Copper - Total 2.39 J 1.60 10.0 ug/L EPA 6010D Vanadium - Total 2.53 J 1.40 10.0 ug/L EPA 6010D Client ID: 4303-SMW4 Lab ID: CD06348-02 Analvte Results Flag MDL Q Units Method Notes 1,4-Dioxane 28 0.80 2.0 ug/L EPA 8260D Barium - Total 110 1.10 10.0 ug/L EPA 6010D Copper - Total 1.82 1 1.60 10.0 ug/L EPA 6010D Nickel - Total 2.68 J 2.20 10.0 ug/L EPA 6010D Client ID: 4103-II9 Lab ID: CD06348-03 Analvte Results Flag MDL Q Units Method Notes 1,1-Dichloroethane 0.88 1 0.13 1.0 ug/L EPA 8260D Barium - Total 66.8 1.10 10.0 ug/L EPA 6010D Cadmium - Total 0.741 J 0.360 1.00 ug/L EPA 6010D cis-1,2-Dichloroethene 0.91 J 0.15 1.0 ug/L EPA 8260D Copper - Total 3.20 J 1.60 10.0 ug/L EPA 6010D Zinc - Total 50.2 4.40 10.0 ug/L EPA 6010D Client ID: 4103-II9 Lab ID: CD06348-03RE3 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.0 J 0.80 2.0 ug/L EPA 8260D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 19 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW3 Lab Sample ID:CDO6348-01 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 13:09 Work Order: CD06348 Project: White Street LF-Phase II Non -Routine Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 1,1-Dichloroethane [75-34-3]A 3.6 ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 OE04039 EPA 8260D 05/05/20 08:17 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Acetone [67-64-1]^ 10 u ug/L 1 10 20 OE04039 EPA 8260D 05/05/20 08:17 CMK Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 OE04039 EPA 8260D 05/05/20 08:17 CMK Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Carbon disulfide [75-15-O]A 1.5 u ug/L 1 1.5 5.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK QV-01 Chlorobenzene [108-90-7]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK QV-01 Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK cis-1,2-Dichloroethene [156-59-2]A 10 ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK QV-01 Ethylbenzene [100-41-4]^ 0.13 u ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK trans-1,3-Dichloropropene [10061-02-6]A 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 OE04039 EPA 8260D 05/05/20 08:17 CMK Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 OE04039 EPA 8260D 05/05/20 08:17 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 of 19 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW3 Lab Sample ID:CD06348-01 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 13:09 Work Order: CD06348 Project: White Street LF-Phase II Non -Routine Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 50 1 50.0 99 % 53-136 OE04039 EPA 826OD 05105120 08:17 CMK Dibromofluoromethane 46 1 50.0 92 % 67-129 OE04039 EPA 826OD 05105120 08:17 CMK Toluene-d8 45 1 50.0 90 % 59-134 OE04039 EPA 626OD 05105120 08:17 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24022 EPA 6020B 04/28/20 16:11 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27010 EPA 6010D 05/07/20 17:13 JDH Barium [7440-39-3]^ 295 ug/L 1 1.10 10.0 OD27010 EPA 6010D 05/07/20 17:13 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27010 EPA 6010D 05/07/20 17:13 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27010 EPA 6010D 05/07/20 17:13 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:13 JDH Cobalt[7440-48-4]^ 1.55 J ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:13 JDH Copper[7440-50-8]^ 2.39 J ug/L 1 1.60 10.0 OD27010 EPA 6010D 05/07/20 17:13 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27010 EPA 6010D 05/07/20 17:13 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD27010 EPA 6010D 05/07/20 17:13 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27010 EPA 6010D 05/07/20 17:13 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27010 EPA 6010D 05/07/20 17:13 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24022 EPA 6020B 04/28/20 16:11 RLF Vanadium [7440-62-2]^ 2.53 J ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:13 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD27010 EPA 6010D 05/07/20 17:13 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 2.4 ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 15:24 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 99 % 75-125 OD27030 EPA 8260D 0412712015:24 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 9 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW4 Lab Sample ID:CD06348-02 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 11:52 Work Order: CD06348 Project: White Street LF-Phase II Non -Routine Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 OE04039 EPA 8260D 05/05/20 08:50 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Acetone [67-64-1]A 10 u ug/L 1 10 20 OE04039 EPA 8260D 05/05/20 08:50 CMK Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 OE04039 EPA 8260D 05/05/20 08:50 CMK Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK QV-01 Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK QV-01 Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Styrene [100-42-5]A 0.11 u ug/L 1 0.11 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 OE04039 EPA 8260D 05/05/20 08:50 CMK Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 OE04039 EPA 8260D 05/05/20 08:50 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 of 19 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW4 Lab Sample ID:CD06348-02 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 11:52 Work Order: CD06348 Project: White Street LF-Phase II Non -Routine Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 96 % 53-136 OE04039 EPA 826OD 05105120 08:50 CMK Dibromofluoromethane 46 1 50.0 93 % 67-129 OE04039 EPA 826OD 05105120 08:50 CMK Toluene-d8 46 1 50.0 93 % 59-134 OE04039 EPA 626OD 05105120 08:50 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24022 EPA 6020B 04/28/20 16:15 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27010 EPA 6010D 05/07/20 17:15 JDH Barium [7440-39-3]^ 110 ug/L 1 1.10 10.0 OD27010 EPA 6010D 05/07/20 17:15 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27010 EPA 6010D 05/07/20 17:15 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27010 EPA 6010D 05/07/20 17:15 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:15 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:15 JDH Copper[7440-50-8]^ 1.82 J ug/L 1 1.60 10.0 OD27010 EPA 6010D 05/07/20 17:15 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27010 EPA 6010D 05/07/20 17:15 JDH Nickel[7440-02-O]^ 2.68 J ug/L 1 2.20 10.0 OD27010 EPA 6010D 05/07/20 17:15 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27010 EPA 6010D 05/07/20 17:15 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27010 EPA 6010D 05/07/20 17:15 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24022 EPA 6020B 04/28/20 16:15 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:15 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD27010 EPA 6010D 05/07/20 17:15 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 28 ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 15:49 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed By Notes Toluene-d8 5.0 1 5.00 100 % 75-125 OD27030 EPA 8260D 0412712015:49 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 9 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II9 Lab Sample ID:CDO6348-03 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 10:49 Work Order: CD06348 Project: White Street LF-Phase II Non -Routine Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 1,1-Dichloroethane [75-34-3]A 0.88 J ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 OE04039 EPA 8260D 05/05/20 09:22 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Acetone [67-64-1]^ 10 u ug/L 1 10 20 OE04039 EPA 8260D 05/05/20 09:22 CMK Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 OE04039 EPA 8260D 05/05/20 09:22 CMK Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Carbon disulfide [75-15-O]A 1.5 u ug/L 1 1.5 5.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK QV-01 Chlorobenzene [108-90-7]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK QV-01 Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK cis-1,2-Dichloroethene [156-59-2]A 0.91 J ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK QV-01 Ethylbenzene [100-41-4]^ 0.13 u ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK trans-1,3-Dichloropropene [10061-02-6]A 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 OE04039 EPA 8260D 05/05/20 09:22 CMK Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 OE04039 EPA 8260D 05/05/20 09:22 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 of 19 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II9 Lab Sample ID:CD06348-03 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 10:49 Work Order: CD06348 Project: White Street LF-Phase II Non -Routine Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 96 % 53-136 OE04039 EPA 826OD 05105120 09:22 CMK Dibromofluoromethane 46 1 50.0 93 % 67-129 OE04039 EPA 826OD 05105120 09:22 CMK Toluene-d8 46 1 50.0 91 % 59-134 OE04039 EPA 626OD 05105120 09:22 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24022 EPA 6020B 04/28/20 16:19 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27010 EPA 6010D 05/07/20 17:28 JDH Barium [7440-39-3]^ 66.8 ug/L 1 1.10 10.0 OD27010 EPA 6010D 05/07/20 17:28 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27010 EPA 6010D 05/07/20 17:28 JDH Cadmium [7440-43-9]^ 0.741 J ug/L 1 0.360 1.00 OD27010 EPA 6010D 05/07/20 17:28 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:28 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:28 JDH Copper[7440-50-8]^ 3.20 J ug/L 1 1.60 10.0 OD27010 EPA 6010D 05/07/20 17:28 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27010 EPA 6010D 05/07/20 17:28 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD27010 EPA 6010D 05/07/20 17:28 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27010 EPA 6010D 05/07/20 17:28 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27010 EPA 6010D 05/07/20 17:28 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24022 EPA 6020B 04/28/20 16:19 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:28 JDH Zinc[744O-66-6]^ 50.2 ug/L 1 4.40 10.0 OD27010 EPA 6010D 05/07/20 17:28 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes 1,4-Dioxane [123-91-1]^ 1.0 J ug/L 1 0.80 2.0 OD29036 EPA 8260D 04/29/20 10:19 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 99 % 75-125 OD29036 EPA 826OD 0412912010:19 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 of 9 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OEO4O39 - EPA 5030E MS Blank (OE04039-BLK1) Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 01:50 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 48 u9/L 50.0 96 53-136 Dibromofluoromethane 47 u9/L 50.0 93 67-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 11 of 19 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OEO4O39 - EPA 5030E MS - Continued (� �Eo www.encolabs.com Blank (OE04039-BLK1) Continued Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 01:50 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 47 u9/L 50.0 94 59-134 LCS (OE04039-BS1) Prepared: 05/04/2020 15:59 Analyzed: 05/04/2020 23:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 23 1.0 ug/L 20.0 117 75-133 Benzene 21 1.0 ug/L 20.0 103 80-134 Chlorobenzene 19 1.0 ug/L 20.0 95 80-120 Toluene 18 1.0 ug/L 20.0 89 71-120 Trichloroethene 22 1.0 ug/L 20.0 108 74-120 Matrix Spike (OE04039-MS1) Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 00:13 Source: CD06682-13 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 26 1.0 ug/L 20.0 0.21 U 128 75-133 Benzene 21 1.0 ug/L 20.0 0.15 U 107 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 94 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 94 71-120 Trichloroethene 23 1.0 ug/L 20.0 0.15 U 116 74-120 Matrix Spike Dup (OE04039-MSD1) Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 00:45 Source: CD06682-13 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 0.21 U 106 75-133 19 20 Benzene 20 1.0 ug/L 20.0 0.15 U 100 80-134 7 17 Chlorobenzene 17 1.0 ug/L 20.0 0.17 U 87 80-120 8 16 Toluene 17 1.0 ug/L 20.0 0.14 U 85 71-120 10 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 103 74-120 12 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O22 - EPA 3OO5A Blank (OD24022-BLK1) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (OD24022-BSI) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:11 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.4 1.00 ug/L 20.0 107 80-120 Selenium 19.1 1.00 ug/L 20.0 95 80-120 Thallium 21.1 1.00 ug/L 20.0 105 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 Of 9 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O22 - EPA 3OO5A - Continued Matrix Spike (OD24022-MS3) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:15 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.8 2.00 ug/L 40.0 0.740 U 107 75-125 Selenium 40.8 2.00 ug/L 40.0 1.82 U 102 75-125 Thallium 42.3 2.00 ug/L 40.0 0.220 U 106 75-125 Matrix Spike Dup (OD24022-MSDS) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:19 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.6 2.00 ug/L 40.0 0.740 U 107 75-125 0.4 20 Selenium 41.4 2.00 ug/L 40.0 1.82 U 103 75-125 1 20 Thallium 42.0 2.00 ug/L 40.0 0.220 U 105 75-125 0.5 20 Post Spike (OD24022-PS1) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:24 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 22.9 1.00 ug/L 20.0 0.0779 114 75-125 Selenium 21.1 1.00 ug/L 20.0-0.0151 105 75-125 Thallium 22.7 1.00 ug/L 20.0 0.0450 113 75-125 Batch OD27O1O - EPA 3OO5A Blank (OD27010-BLK1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L LCS (OD27030-BS1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:46 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits Arsenic 193 10.0 ug/L 200 97 80-120 Barium 190 10.0 ug/L 200 95 80-120 Beryllium 18.6 1.00 ug/L 20.0 93 80-120 Cadmium 19.2 1.00 ug/L 20.0 96 80-120 Chromium 185 10.0 ug/L 200 93 80-120 Cobalt 195 10.0 ug/L 200 98 80-120 Copper 186 10.0 ug/L 200 93 80-120 Lead 192 10.0 ug/L 200 96 80-120 RPD RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full Page 13 of 19 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD27O1O - EPA 3OO5A - Continued LCS (OD27010-BSI) Continued Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:46 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nickel 188 10.0 ug/L 200 94 80-120 Selenium 194 10.0 ug/L 200 97 80-120 Silver 188 10.0 ug/L 200 94 80-120 Vanadium 184 10.0 ug/L 200 92 80-120 Zinc 193 10.0 ug/L 200 97 80-120 Matrix Spike (OD27030-MS1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:48 Source: CD01673-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 183 10.0 ug/L 200 7.60 U 91 75-125 Barium 381 10.0 ug/L 200 200 90 75-125 Beryllium 22.0 1.00 ug/L 20.0 3.44 93 75-125 Cadmium 18.8 1.00 ug/L 20.0 0.360 U 94 75-125 Chromium 183 10.0 ug/L 200 1.40 U 92 75-125 Cobalt 192 10.0 ug/L 200 1.40 U 96 75-125 Copper 183 10.0 ug/L 200 1.60 U 91 75-125 Lead 190 10.0 ug/L 200 3.10 U 95 75-125 Nickel 184 10.0 ug/L 200 2.20 U 92 75-125 Selenium 194 10.0 ug/L 200 6.20 U 97 75-125 Silver 184 10.0 ug/L 200 1.90 U 92 75-125 Vanadium 183 10.0 ug/L 200 1.40 U 91 75-125 Zinc 193 10.0 ug/L 200 4.40 U 97 75-125 Matrix Spike Dup (OD27010-MSD1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:51 Source: CD01673-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 190 10.0 ug/L 200 7.60 U 95 75-125 4 20 Barium 387 10.0 ug/L 200 200 93 75-125 2 20 Beryllium 22.3 1.00 ug/L 20.0 3.44 94 75-125 1 20 Cadmium 19.2 1.00 ug/L 20.0 0.360 U 96 75-125 2 20 Chromium 186 10.0 ug/L 200 1.40 U 93 75-125 2 20 Cobalt 196 10.0 ug/L 200 1.40 U 98 75-125 2 20 Copper 186 10.0 ug/L 200 1.60 U 93 75-125 2 20 Lead 194 10.0 ug/L 200 3.10 U 97 75-125 2 20 Nickel 187 10.0 ug/L 200 2.20 U 93 75-125 1 20 Selenium 191 10.0 ug/L 200 6.20 U 95 75-125 2 20 Silver 186 10.0 ug/L 200 1.90 U 93 75-125 1 20 Vanadium 186 10.0 ug/L 200 1.40 U 93 75-125 2 20 Zinc 199 10.0 ug/L 200 4.40 U 100 75-125 3 20 Post Spike (OD27010-PS1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:53 Source: CD01673-02 Spike Source Analvte Result Flaq POL Units Level Result %REC Arsenic 0.187 0.0100 mg/L 0.200 -0.00583 93 Barium 0.395 0.0100 mg/L 0.200 0.200 97 Beryllium 0.0231 0.00100 mg/L 0.0200 0.00344 98 Cadmium 0.0200 0.00100 mg/L 0.0200 -0.000201 100 Chromium 0.194 0.0100 mg/L 0.200 0.000281 97 %REC Limits RPD 80-120 80-120 80-120 80-120 80-120 RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 Of 19 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD27O1O - EPA 3OO5A - Continued Post Spike (OD27010-PS1) Continued Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:53 Source: CD01673-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cobalt 0.206 0.0100 mg/L 0.200 0.000733 103 80-120 Copper 0.195 0.0100 mg/L 0.200 0.000500 97 80-120 Lead 0.202 0.0100 mg/L 0.200 0.00180 100 80-120 Nickel 0.194 0.0100 mg/L 0.200 -0.00177 97 80-120 Selenium 0.203 0.0100 mg/L 0.200 -0.00224 101 80-120 Silver 0.189 0.0100 mg/L 0.200 0.000553 94 80-120 Vanadium 0.194 0.0100 mg/L 0.200 0.000364 97 80-120 Zinc 0.200 0.0100 mg/L 0.200 0.00302 99 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD27O3O - EPA 5O3OB MS Blank (OD27030-BLK3) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 10:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 5.1 u91L 5.00 102 75-125 LCS (OD27030-BSI) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 09:21 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 97 80-133 Toluene-d8 4.9 u91L 5.00 96 75-125 Matrix Spike (OD27030-MS1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:14 Source: AD02710-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 95 80-133 Toluene-& 5.2 u91L 5.00 104 75-125 Matrix Spike Dup (OD27030-MSD1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:39 Source: AD02710-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 0.80 U 98 80-133 3 19 Toluene-& 4.9 u91L 5.00 98 75-125 Batch OD29O36 - EPA 5O3OB MS Blank (OD29036-BLKI) Prepared: 04/29/2020 00:00 Analyzed: 04/29/2020 09:51 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-& 5.2 u91L 5.00 104 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 15 Of 19 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD29O36 - EPA 5O3OB MS - Continued LCS (OD29036-BSI) Prepared: 04/29/2020 00:00 Analyzed: 04/29/2020 09:25 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 101 80-133 Toluene-d8 5.0 u9/L 5.00 100 75-125 Matrix Spike (OD29036-MS1) Prepared: 04/29/2020 00:00 Analyzed: 04/29/2020 14:09 Source: AD02767-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 38 2.0 ug/L 25.0 16 88 80-133 Toluene-d8 4.9 u9/L 5.00 98 75-125 Matrix Spike Dup (OD29036-MSD1) Prepared: 04/29/2020 00:00 Analyzed: 04/29/2020 14:35 Source: AD02767-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 39 2.0 ug/L 25.0 16 91 80-133 2 19 Toluene-d8 5.1 u9/L 5.00 102 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 16 Of 19 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 17 of 19 A 7J U m L m � b a a a � `d m � o m m m w u C9. m Q m m P 0 3 ;� a 3 3 �i m m i`\ lKryp G n J n. n 9 n � b m Ai �y m m �- C, a w�., m �N m C D h U' � n rn a �a ma N (/� v_ � L!i m n ➢ n � a m w m A �N cc fro D ` 1 [jA 4 � T r J a N- U's 1 m 33 V Z Z $ d n 3 3 V l y `J yO1 3 r � I I F., © C C 6 D ./* I `d, I OI? -Surx I �, A 5, 0-,, 3-/ d co, C- V+ j N4 14 4 Z v iD ro ro m c'n Q X m a p_ Q Page 18 of 19 Sample Preservation Verification ENCO Cary Work Order: CD06348 Project: White Street LF-Phase II Non -Routine Client: Golder Associates, Inc. (GO007) Project#: 1668421.107 Logged In: 23-Apr-20 11 09 Logged By: John C King , Preservation Check Performed By: ` Date/Time:5 ZV //(�L CD06348-01 Cant T e yp Pres (pH) Requirement pH Checked / In Control Date�me PH Adjusted Adjusted Reagent UsedlComments A 250mLP+HNO3 ,2 , YI I N I NA Y I N/ NA CDO6348-02 Cont Type Pres (pH) Requirement pH Checked i I In Control pH Adjusted Date/Time Adjusted Reagent UsedlComments A 250mLP+HNO3 <2 f Y;- I N I NA Y l�l�; 1 NA CD06348-03 Cont T e yP Pres (pH) Requirement pH Checked I In Control Datelt-ime pH Adjusted Adjusted Reagent llsedlCamments A 250mLP+HNO3 <2 lY'1 N 1 NA Y I jfV }I NA i ReacIent Name ID 1 2 pH Strip ID: Rea ent Name ID 3 4 Reagent Name ID 5 6 Page 19 of 19 C:IELMNT1Printlwko_PreservationCheck.rpt _" ; WORK ORDER Printed: 5/11/2020 2:48:42PM CD06348 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Daniel B. Mays Project: White Street LF-Phase II Non -Routine Project Number: 1668421.107 PO #: Report To: Golder Associates, Inc. (G0007) Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 Phone: (336) 852-4903 Fax: (336) 852-4904 Invoice To: City of Greensboro (CI034) Richard Lovett 401 Patton Ave Greensboro, NC 27406 Phone :(336) 373-4188 Fax: Received By: Timothy J. Parker Date Received: 23-Apr-20 10:21 Logged In By: John C King Date Logged In: 23-Apr-20 11:09 Work Order Comments: C-403 received at 0.7°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: White Street Landfill — Phase II, Non -Routine Project Reference Number: 19131339,101 Sampling Event Date- April 20-23, 2020 Review Date: June 11, 2020 Report #: CD05205. CDO6348 GOLDER Initials: NTT Review: 6. Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain -of -custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy. in general accordance with the following United States Environmental Protection Agency documents: Region III Modifications to Functional Guidelines for Organic Data Review Multi -Media, Multi -Concentration, September 1994, Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility/C & D List NC Appendix I NC Appendix I + Detects X NC Appendix II NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COCj REVIEW NTT COC was properly signed by all parties. NTT Correct project name and number are on the form_ incorrected project number on CDC. Should be 19131339.101 NTT Sample receipt condition at laboratory was acceptable. NTT Each sample and blank submitted for analysis appears in the report. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW GOLDEP Page 2 of 3 2.0 SAMPLE HOLDING TIMES NTT Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). Review Criteria Method Anal tes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 NitratelSulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days NTT Laboratory analyzed at least one internal blank for each method, where applicable. NTT Laboratory blank is interference -free. NTT Surrogate recoveries are provided for each analytical method, where applicable. NTT Surrogate recoveries for each method are within the acceptable limits (i.e,, at least 50% of the surrogates were within range). NTT MS/MSD/LCS data results are provided for each analytical method. NTT MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range), (CD5205) QM-11 was added to sample MSD1 because precision between duplicate matrix spikes of the same sample was outside acceptable limits. 4.0 ANALYTE LISTS/IVIETHODS NTT The proper number of constituents are present for each analyte list as identified above (including detects where applicable). NTT Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING NTT All analytical reporting associated with the event was performed by the contracted lab. NTT Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL, LABORATORY DATA REVIEWi G 0 L D E R Page 3 of 3 have been 'flagged' with a 'B' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X ofthe concentration in the blank (or 10Xfor commonly detected laboratory contaminants -acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. NTT It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. Antimony, Thallium, and Selenium (2x) on all samples. NTT The report provides the reporting limit for each constituent. NTT The results were reported at or below their proper reporting limits (e.g., MDLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them_ State if the reporting limit error is due to dilutions. NTT No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Interim Maximum Allowable Concentrations (IMACs) in wells or field/equipment/trip blanks or above applicable Surface Water Standards for surface water points. i- 1.4-dioxane MC 2L = 3 uo1L • SMW-4 @26 u91L • II-38 @3.5 uglL Cobalt (IMAC = 1 ugIL1 • SMW-1 @ 24.8 uglL • SMW-3 @ 1.55 uglL (J) • II-38 @ 1.62 uglL (J) Vanadium (IMAC = 0.3 ualL) • SMW1 @ 1.84 uglL (J) • SMW-3 @ 2.53 ug1L (J) Cadmium_ JNC_ 2L = 2 ugiQ -& SMW-1 @ 4.96 uglL NTT No quantifiable inorganic or organic constituents were detected in a well or surface water point at concentrations outside of their historical range (more than 5X previous concentrations or first-time detections), NTT Other report issues/Communications with laboratory/etc.: ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Wednesday, June 17, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.107, Project Name/Desc: White Street LF-Phase I,II,III SW ENCO Workorder(s): CDO5203 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Thursday, April 23, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Daniel B. Mays Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of 22 PROJECT NARRATIVE Date: 17 June 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11,111 SW Lab ID: CD05203 Overview (� �Eo www.encolabs.com This report is an amendment to the original report dated May 8, 2020 for this work order. This report was revised, at the client's request, to only report selenium by EPA method 601 OD. Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples QM-11 was appended to samples MSD1 sample for analysis Total because the precision between the duplicate matrix spikes of the same sample was outside acceptable limits. QV-01 was appended to samples 4103/12-SW1, 4103/12-SW2, 4103/12-SW3, 4103/12-SW4, and 4103/12-Trip Blank for analyses 1,2-Dichloroethane, Bromochloromethane, cis- 1,3-Dichloropropene, Dibromomethane, lodomethane, and Trichlorofluoromethane because the associated continuing calibration verification standard exhibited high bias ; since the result is ND for the analyte there is no impact on data quality. Quality Control Remarks No Comments Other Comments The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Daniel Mays Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of 22 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303/12-SW3 Lab ID: CD05203-01 Sampled: 04/22/20 16:53 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:32 05/07/20 16:06 EPA 6020E EPA 3005A 10/19/20 04/24/20 10:28 04/28/20 12:14 EPA 8260D EPA 503013_MS 05/06/20 04/27/20 00:00 04/27/20 12:50 EPA 8260D EPA 503013_MS 05/06/20 05/05/20 13:22 05/05/20 17:25 Client ID: 4303/12-SW2 Lab ID: CD05203-02 Sampled: 04/22/20 14:52 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:32 05/07/20 16:08 EPA 6020E EPA 3005A 10/19/20 04/24/20 10:28 04/28/20 12:18 EPA 8260D EPA 503013_MS O5/06/20 04/27/20 00:00 04/27/20 13:15 EPA 8260D EPA 503013_MS 05/06/20 05/05/20 13:22 05/05/20 17:58 Client ID: 4303/12-SW3 Lab ID: CD05203-03 Sampled: 04/22/20 15:15 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:32 05/07/20 16:11 EPA 6020B EPA 3005A 10/19/20 04/24/20 10:28 04/28/20 12:22 EPA 8260D EPA 503013_MS 05/06/20 04/27/20 00:00 04/27/20 13:41 EPA 8260D EPA 5030B_MS 05/06/20 05/05/20 13:22 05/05/20 18:30 Client ID: 4303/12-SW4 Lab ID: CD05203-04 Sampled: 04/22/20 16:00 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:32 05/07/20 16:13 EPA 6020B EPA 3005A 10/19/20 04/24/20 10:28 04/28/20 12:35 EPA 8260D EPA 503013_MS 05/06/20 04/27/20 00:00 04/27/20 14:07 EPA 8260D EPA 503013_MS 05/06/20 05/05/20 13:22 05/05/20 19:02 Client ID: 4103/12-Trip Blank Lab ID: CD05203-05 Sampled: 04/22/20 14:52 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/06/20 04/27/20 00:00 04/27/20 14:32 EPA 8260D EPA 503013_MS 05/06/20 05/05/20 13:22 05/05/20 16:20 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 22 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303/12-SW3 Lab ID: CD05203-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 41.9 1.10 10.0 ug/L EPA 6010D Chromium - Total 1.65 J 1.40 10.0 ug/L EPA 6010D Copper - Total 4.72 J 1.60 10.0 ug/L EPA 6010D Nickel - Total 36.8 2.20 10.0 ug/L EPA 6010D Vanadium - Total 1.75 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 27.1 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW2 Lab ID: CD05203-02 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.6 J 0.80 2.0 ug/L EPA 8260D Barium - Total 48.0 1.10 10.0 uq/L EPA 6010D I Client ID: 4303/12-SW3 Lab ID: CD05203-03 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 44.2 1.10 10.0 ug/L EPA 6010D Chromium - Total 1.70 J 1.40 10.0 ug/L EPA 6010D Copper - Total 4.85 J 1.60 10.0 ug/L EPA 6010D Nickel - Total 3.71 J 2.20 10.0 ug/L EPA 6010D Vanadium - Total 2.28 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 13.6 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW4 Lab ID: CD05203-04 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 0.89 J 0.80 2.0 ug/L EPA 8260D Barium - Total 42.2 1.10 10.0 ug/L EPA 6010D Copper - Total 6.44 J 1.60 10.0 ug/L EPA 6010D Vanadium - Total 2.49 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 13.3 4.40 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 22 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW1 Lab Sample ID:CD05203-01 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 16:53 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK QV-01 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OE05044 EPA 8260D 05/05/20 17:25 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OE05044 EPA 8260D 05/05/20 17:25 CMK Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK QV-01 Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OE05044 EPA 8260D 05/05/20 17:25 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK QV-01 Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Xylenes (Total) [1330-20-7]A 0.45 U ug/L 1 0.45 3.0 OE05044 EPA 8260D 05/05/20 17:25 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW1 Lab Sample ID:CD05203-01 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 16:53 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 45 1 50.0 90 % 53-136 OE05044 EPA 826OD 0510512017:25 CMK Dibromofluoromethane 45 1 50.0 90 % 67-129 OE05044 EPA 826OD 0510512017:25 CMK Toluene-d8 45 1 50.0 89 % 59-134 OE05044 EPA 626OD 0510512017:25 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 12:14 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Barium [7440-39-3]^ 41.9 ug/L 1 1.10 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27009 EPA 6010D 05/07/20 16:06 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27009 EPA 6010D 05/07/20 16:06 JDH Chromium [7440-47-3]^ 1.65 J ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Copper[7440-50-8]^ 4.72 J ug/L 1 1.60 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Nickel[7440-02-O]^ 36.8 ug/L 1 2.20 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 12:14 RLF Vanadium [7440-62-2]^ 1.75 J ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Zinc[744O-66-6]^ 27.1 ug/L 1 4.40 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 12:50 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.2 1 5.00 105 % 75-125 OD27030 EPA 826OD 0412712012:50 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 22 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW2 Lab Sample ID:CD05203-02 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 14:52 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK QV-01 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OE05044 EPA 8260D 05/05/20 17:58 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OE05044 EPA 8260D 05/05/20 17:58 CMK Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK QV-01 Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OE05044 EPA 8260D 05/05/20 17:58 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK QV-01 Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Xylenes (Total) [1330-20-7]A 0.45 U ug/L 1 0.45 3.0 OE05044 EPA 8260D 05/05/20 17:58 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW2 Lab Sample ID:CD05203-02 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 14:52 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 93 % 53-136 OE05044 EPA 826OD 0510512017:58 CMK Dibromofluoromethane 43 1 50.0 86 % 67-129 OE05044 EPA 826OD 0510512017:58 CMK Toluene-d8 44 1 50.0 88 % 59-134 OE05044 EPA 626OD 0510512017:58 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 12:18 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Barium [7440-39-3]^ 48.0 ug/L 1 1.10 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27009 EPA 6010D 05/07/20 16:08 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27009 EPA 6010D 05/07/20 16:08 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 12:18 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 1.6 J ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 13:15 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 98 % 75-125 OD27030 EPA 8260D 0412712013:15 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 22 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW3 Lab Sample ID:CD05203-03 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 15:15 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK QV-01 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OE05044 EPA 8260D 05/05/20 18:30 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OE05044 EPA 8260D 05/05/20 18:30 CMK Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK QV-01 Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OE05044 EPA 8260D 05/05/20 18:30 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK QV-01 Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Xylenes (Total) [1330-20-7]A 0.45 U ug/L 1 0.45 3.0 OE05044 EPA 8260D 05/05/20 18:30 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW3 Lab Sample ID:CD05203-03 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 15:15 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 44 1 50.0 88 % 53-136 OE05044 EPA 826OD 0510512018:30 CMK Dibromofluoromethane 46 1 50.0 92 % 67-129 OE05044 EPA 826OD 0510512018:30 CMK Toluene-d8 45 1 50.0 89 % 59-134 OE05044 EPA 626OD 051051201830 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 12:22 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Barium [7440-39-3]^ 44.2 ug/L 1 1.10 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27009 EPA 6010D 05/07/20 16:11 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27009 EPA 6010D 05/07/20 16:11 JDH Chromium [7440-47-3]^ 1.70 J ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Copper[7440-50-8]^ 4.85 J ug/L 1 1.60 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Nickel[7440-02-O]^ 3.71 J ug/L 1 2.20 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 12:22 RLF Vanadium [7440-62-2]^ 2.28 J ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Zinc[744O-66-6]^ 13.6 ug/L 1 4.40 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 13:41 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 98 % 75-125 OD27030 EPA 826OD 04127120 13:41 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 of 22 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW4 Lab Sample ID:CD05203-04 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 16:00 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK QV-01 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OE05044 EPA 8260D 05/05/20 19:02 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OE05044 EPA 8260D 05/05/20 19:02 CMK Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK QV-01 Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OE05044 EPA 8260D 05/05/20 19:02 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK QV-01 Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Xylenes (Total) [1330-20-7]A 0.45 U ug/L 1 0.45 3.0 OE05044 EPA 8260D 05/05/20 19:02 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW4 Lab Sample ID:CD05203-04 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 16:00 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 92 % 53-136 OE05044 EPA 826OD 0510512019:02 CMK Dibromofluoromethane 45 1 50.0 90 % 67-129 OE05044 EPA 826OD 0510512019:02 CMK Toluene-d8 45 1 50.0 90 % 59-134 OE05044 EPA 626OD 0510512019:02 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 12:35 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Barium [7440-39-3]^ 42.2 ug/L 1 1.10 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27009 EPA 6010D 05/07/20 16:13 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27009 EPA 6010D 05/07/20 16:13 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Copper[7440-50-8]^ 6.44 J ug/L 1 1.60 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 12:35 RLF Vanadium [7440-62-2]^ 2.49 J ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Zinc[744O-66-6]^ 13.3 ug/L 1 4.40 10.0 OD27009 EPA 6010D O5/07/20 16:13 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.89 J ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 14:07 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 98 % 75-125 OD27030 EPA 8260D 0412712014:07 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 of 22 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-Trip Blank Lab Sample ID:CD05203-05 Received: 04/23/20 10:21 Matrix: Water Sampled:04/22/20 14:52 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By: ENCO Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK QV-01 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Acetone [67-64-1]A 10 u ug/L 1 10 20 OE05044 EPA 8260D 05/05/20 16:20 CMK Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 OE05044 EPA 8260D 05/05/20 16:20 CMK Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK QV-01 Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 OE05044 EPA 8260D 05/05/20 16:20 CMK QV-01 Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Styrene[100-42-5]A 0.11 Ll ug/L 1 0.11 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK QV-01 Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 OE05044 EPA 8260D 05/05/20 16:20 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 Of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-Trip Blank Lab Sample ID:CD05203-05 Received: 04/23/20 10:21 Matrix: Water Sampled:04/22/20 14:52 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By: ENCO Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 96 % 53-136 OE05044 EPA 826OD 0510512016:20 CMK Dibromofluoromethane 46 1 50.0 92 % 67-129 OE05044 EPA 826OD 0510512016:20 CMK Toluene-d8 44 1 50.0 89 % 59-134 OE05044 EPA 626OD 0510512016:20 CMK Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL POLL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 14:32 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffly Notes Toluene-d8 4.9 1 5.00 99 % 75-125 OD27030 EPA 826OD 041271201422 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 Of 22 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OEO5O44 - EPA 5030E MS Blank (OE05044-BLK1) Prepared: 05/05/2020 13:22 Analyzed: 05/05/2020 15:48 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes 4-Bromofluorobenzene 47 u9/L 50.0 94 53-136 Dibromofluoromethane 46 u9/L 50.0 92 67-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 15 Of 22 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OEO5O44 - EPA 5030E MS - Continued (� �Eo www.encolabs.com Blank (OE05044-BLK1) Continued Prepared: 05/05/2020 13:22 Analyzed: 05/05/2020 15:48 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 45 u91L 50.0 69 59-134 LCS (OE05044-BS1) Prepared: 05/05/2020 13:22 Analyzed: 05/05/2020 13:39 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 103 75-133 Benzene 21 1.0 ug/L 20.0 103 80-134 Chlorobenzene 17 1.0 ug/L 20.0 87 80-120 Toluene 17 1.0 ug/L 20.0 84 71-120 Trichloroethene 23 1.0 ug/L 20.0 117 74-120 Matrix Spike (OE05044-MS1) Prepared: 05/05/2020 13:22 Analyzed: 05/05/2020 14:11 Source: CD06682-14 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 0.21 U 109 75-133 Benzene 21 1.0 ug/L 20.0 0.15 U 106 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 95 80-120 Toluene 18 1.0 ug/L 20.0 0.14 U 89 71-120 Trichloroethene 23 1.0 ug/L 20.0 0.15 U 114 74-120 Matrix Spike Dup (OE05044-MSD1) Prepared: 05/05/2020 13:22 Analyzed: 05/05/2020 14:43 Source: CD06682-14 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 0.21 U 104 75-133 4 20 Benzene 20 1.0 ug/L 20.0 0.15 U 99 80-134 6 17 Chlorobenzene 18 1.0 ug/L 20.0 0.17 U 92 80-120 3 16 Toluene 18 1.0 ug/L 20.0 0.14 U 88 71-120 1 17 Trichloroethene 23 1.0 ug/L 20.0 0.15 U 114 74-120 0.1 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O21 - EPA 3OO5A Blank (OD24021-BLK1) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:44 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (OD24021-BSI) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:48 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 20.9 1.00 ug/L 20.0 105 80-120 Selenium 21.5 1.00 ug/L 20.0 107 80-120 Thallium 21.0 1.00 ug/L 20.0 105 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 16 Of 22 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O21 - EPA 3OO5A - Continued Matrix Spike (OD24021-MS1) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:52 Source: CD05553-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.1 2.00 ug/L 40.0 0.740 U 105 75-125 Selenium 38.8 2.00 ug/L 40.0 1.82 U 97 75-125 Thallium 40.7 2.00 ug/L 40.0 0.220 U 102 75-125 Matrix Spike Dup (OD24021-MSDS) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:56 Source: CD05553-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.7 2.00 ug/L 40.0 0.740 U 107 75-125 1 20 Selenium 41.3 2.00 ug/L 40.0 1.82 U 103 75-125 6 20 Thallium 41.3 2.00 ug/L 40.0 0.220 U 103 75-125 2 20 Post Spike (OD24021-PS1) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 12:05 Source: CD05553-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.5 1.00 ug/L 20.0 0.00516 108 75-125 Selenium 19.7 1.00 ug/L 20.0 0.0825 98 75-125 Thallium 21.3 1.00 ug/L 20.0 0.00474 107 75-125 Batch OD27OO9 - EPA 3OO5A Blank (OD27009-BLK1) Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L LCS (OD27009-BS1) Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:21 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits Arsenic 192 10.0 ug/L 200 96 80-120 Barium 188 10.0 ug/L 200 94 80-120 Beryllium 18.3 1.00 ug/L 20.0 92 80-120 Cadmium 19.4 1.00 ug/L 20.0 97 80-120 Chromium 183 10.0 ug/L 200 92 80-120 Cobalt 195 10.0 ug/L 200 98 80-120 Copper 183 10.0 ug/L 200 92 80-120 Lead 193 10.0 ug/L 200 96 80-120 RPD RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full Page 17 of 22 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD27OO9 - EPA 3OO5A - Continued LCS (OD27009-BSI) Continued Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:21 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nickel 187 10.0 ug/L 200 93 80-120 Selenium 195 10.0 ug/L 200 97 80-120 Silver 185 10.0 ug/L 200 92 80-120 Vanadium 183 10.0 ug/L 200 91 80-120 Zinc 193 10.0 ug/L 200 96 80-120 Matrix Spike (OD27009-MS1) Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:28 Source: CD04204-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 154 10.0 ug/L 200 7.60 U 77 75-125 Barium 184 10.0 ug/L 200 1.10 U 92 75-125 Beryllium 17.6 1.00 ug/L 20.0 0.160 U 88 75-125 Cadmium 16.5 1.00 ug/L 20.0 0.360 U 83 75-125 Chromium 179 10.0 ug/L 200 1.40 U 89 75-125 Cobalt 170 10.0 ug/L 200 1.40 U 85 75-125 Copper 180 10.0 ug/L 200 1.60 U 90 75-125 Lead 166 10.0 ug/L 200 3.10 U 83 75-125 Nickel 181 10.0 ug/L 200 2.20 U 90 75-125 Selenium 163 10.0 ug/L 200 6.20 U 82 75-125 Silver 181 10.0 ug/L 200 1.90 U 91 75-125 Vanadium 178 10.0 ug/L 200 1.40 U 89 75-125 Zinc 164 10.0 ug/L 200 4.40 U 82 75-125 Matrix Spike Dup (OD27009-MSD1) Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:31 Source: CD04204-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 197 10.0 ug/L 200 7.60 U 99 75-125 24 20 QM-11 Barium 192 10.0 ug/L 200 1.10 U 96 75-125 4 20 Beryllium 18.6 1.00 ug/L 20.0 0.160 U 93 75-125 6 20 Cadmium 19.9 1.00 ug/L 20.0 0.360 U 100 75-125 19 20 Chromium 187 10.0 ug/L 200 1.40 U 93 75-125 4 20 Cobalt 201 10.0 ug/L 200 1.40 U 100 75-125 17 20 Copper 187 10.0 ug/L 200 1.60 U 94 75-125 4 20 Lead 197 10.0 ug/L 200 3.10 U 98 75-125 17 20 Nickel 189 10.0 ug/L 200 2.20 U 95 75-125 5 20 Selenium 197 10.0 ug/L 200 6.20 U 99 75-125 19 20 Silver 188 10.0 ug/L 200 1.90 U 94 75-125 4 20 Vanadium 186 10.0 ug/L 200 1.40 U 93 75-125 5 20 Zinc 200 10.0 ug/L 200 4.40 U 100 75-125 20 20 Post Spike (OD27009-PS1) Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:33 Source: CD04204-08 Spike Source Analvte Result Flaq POL Units Level Result %REC Arsenic 0.191 0.0100 mg/L 0.200 -0.0102 95 Barium 0.197 0.0100 mg/L 0.200 0.000222 98 Beryllium 0.0191 0.00100 mg/L 0.0200 -2.91E-6 96 Cadmium 0.0200 0.00100 mg/L 0.0200 2.79E-5 100 Chromium 0.191 0.0100 mg/L 0.200 -0.000232 96 %REC Limits RPD 80-120 80-120 80-120 80-120 80-120 RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 18 Of 22 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD27OO9 - EPA 3OO5A - Continued Post Spike (OD27009-PS1) Continued Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:33 Source: CD04204-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cobalt 0.201 0.0100 mg/L 0.200 -0.000183 100 80-120 Copper 0.192 0.0100 mg/L 0.200 9.49E-5 96 80-120 Lead 0.198 0.0100 mg/L 0.200 -0.000187 99 80-120 Nickel 0.194 0.0100 mg/L 0.200 -0.00177 97 80-120 Selenium 0.196 0.0100 mg/L 0.200 -0.00762 98 80-120 Silver 0.189 0.0100 mg/L 0.200 0.00143 94 80-120 Vanadium 0.191 0.0100 mg/L 0.200 0.000772 95 80-120 Zinc 0.195 0.0100 mg/L 0.200 -0.000772 98 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD27O3O - EPA 5O3OB MS Blank (OD27030-BLK3) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 10:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 u 2.0 ug/L Toluene-d8 5.1 u9/L 5.00 102 75-125 LCS (OD27030-BSI) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 09:21 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 97 80-133 Toluene-d8 4.9 u9/L 5.00 96 75-125 Matrix Spike (OD27030-MS1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:14 Source: CD05203-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 95 80-133 Toluene-& 5.2 u9/L 5.00 104 75-125 Matrix Spike Dup (OD27030-MSD1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:39 Source: CD05203-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 0.80 U 98 80-133 3 19 Toluene-& 4.9 u9/L 5.00 98 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 19 Of 22 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QM-11 Precision between duplicate matrix spikes of the same sample was outside acceptance limits. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 20 of 22 r> m 3 m 3 n � x .ice � � m m 4 m 3 ap � D 3 r ?° n � m � � m � m FL Tl 7 ti 4 chi v Rl b m i m a a a II7 W �e W �e n m a s 0 v n ; CD x U � (D 3 CDW t� 3 m m C 7 fl) ro -a � - a � m � m I W W v Qj 0 d EL m 3 CD G�1 W W O W v m fi Pco '+ N Ccof!f =0 a z 0, �_ A W N3 -+ a C7 CD :D � x w Q n ^� q C) r i � O N ' o kP g c ti r C m 3 a CS m _ OL m C CD v � U 1 V iv Iti x x x x x Ix Ix 8260D Appendix 1,8280D SIM ID Ag,Ai.Ba,Be,Cd,Ca,Cr,CU,N 1,Ph,$h,Se, Se, T(, V,Zn o V C) o C N CD Cl X C)Ul A 3 � (D ° N CD a o aQi N CD m W Q Q o -Page 21 of 22 Sample Preservation Verification ENCO Cary Work Order: CDO5203 Project: White Street LP -Phase 1,11,111 SW Client: Golder Associates, Inc. (GO007) Project#: 1668421.107 Logged In: 23-Apr-20 10:57 ii44 Logged By: John C King II jj Preservation Check Performed By: '��t Date/Time: zU h I L-3D CD05203-01 Cont Type Pres (pH) Requirement pH Checked I In Control pH Adjusted Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y 1 N/ NA Y 1 N 1 NA CD05203-02 Cant Type Pres (pH) Requirement p . H Checked l In Control pH Adjusted Datefrme Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y. / N / NA Y /, ! NA CDO5203-03 Cont Type Pres (pH) Requirement pH Checked ! In Control pH Adjusted DateMme Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y I N I NA Y I .N 1 NA CDO5203-04 Cont YP Type Pres (pH) Requirement pH Checked I In Control DatefTime pH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 I N I NA Y I IJ / NA Rea ent Name ID 1 2 pH Strip ID: Qk ro Rea ent Name ID 3 4 Rea ent Name ID 5 6 Page 22 of 22 C:IELMNTIPrint4ko_PreservationCheck. rpt WORK ORDER Printed: 5/8/2020 3:48:57PM CD05203 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Daniel B. Mays Project: White Street LF-Phase I,II,III SW Project Number: 1668421.107 PO #: Report To: Golder Associates, Inc. (G0007) Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 Phone: (336) 852-4903 Fax: (336) 852-4904 Invoice To: City of Greensboro (CI034) Richard Lovett 401 Patton Ave Greensboro, NC 27406 Phone :(336) 373-4188 Fax: Received By: Timothy J. Parker Date Received: 23-Apr-20 10:21 Logged In By: John C King Date Logged In: 23-Apr-20 10:57 Work Order Comments: C-1935 received at 0.7°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 COLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: White Street Landfill — Phase 1,11,111 SW Project Reference Number: 191 31339.101 Sampling Event Date: April 20 — 23, 2020 Review Date: May 13, 2020 Report #: CD05203 kl)o G 0 L D E R Initials: DC Review: RK Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain -of -custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: Region III Modifications to Functional Guidelines for Organic Data Review Multi -Media, Multi -Concentration, September 1994; Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility/C & D List X NC Appendix I NC Appendix I + Detects NC Appendix I1 NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COG) REVIEW DC COC was properly signed by all parties. DC Correct project name and number are on the form. Incorrected project number on COG. Should be 19131339.101 DC Sample receipt condition at laboratory was acceptable. DC Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES DC Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW G 0 L D E R Page 2 of 3 4 Review Criteria Method Anal tes Holding Time SW-846 Method 8260 and 8011 VOcs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 sVQcs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW DC Laboratory analyzed at least one internal blank for each method, where applicable. DC Laboratory blank is interference -free. DC Surrogate recoveries are provided for each analytical method, where applicable. QV-01 was appended to samples 4103112-SW1, 4103112-SW2, 4103112-SW3, 4103112-SW4, and 4103112- Trip Blank for analyses 1,2-Dichloroethane, Bromochloromethane, cis-1,3-Dichloropropene, Dibromomethane, lodomethane, and Trichlorofluoromethane because the associated continuing calibration verification standard exhibited high bias ; since the result is ND for the analyte there is no impact on data quality DC Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). DC MS/MSD/LCS data results are provided for each analytical method. DC MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). QM-11 was appended to samples MSD1 sample for analysis Total because the precision between the duplicate matrix spikes of the same sample was outside acceptable limits 4.0 ANALYTE LISTS/METHODS DC The proper number of constituents are present for each analyte, list as identified above (including detects where applicable). DC Proper EPA SW-846 analytical methods were used for analysis. �� J:i f�lt:1 � ��1:� l l.►L� DC All analytical reporting associated with the event was performed by the contracted lab. GOLDER ASSOCIATES INC, INC. QUALITY ASSURANCE & QUALITY CONTROL G L D E LABORATORY DATA REVIEW Page 3 of 3 DC Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been 'flagged' with a `B' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 1 OX for commonly detected laboratory contaminants -acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. DC It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 1Ox resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. Antimony and Thallium (2X) on all samples. DC The report provides the reporting limit for each constituent. DC The results were reported at or below their proper reporting limits (e.g., MDLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. DC No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Interim Maximum Allowable Concentrations (IMACs) in wells or fieldlequipment/trip blanks or above applicable Surface Water Standards for surface water points. Copper (NCSWS=2.7 ug/L (Chronic), 3.6ugiL (Acute)) • SW-1@ 4.72 ug1L(J) * SW-3 a7 4.85 ug/L (J) * SW-4 @ 6.44 ug/L (J) : Nickel (NCSWS=16 use/L (Chronic), 140un/L (Acute)) • SWA @ 36.8 u91L DC No quantifiable inorganic or organic constituents were detected in a well or surface water point at concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). * Nickel in SW-1 DC Other report issues/Communications with laboratory/etc.; ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Wednesday, June 17, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.106, Project Name/Desc: White Street LF-Phase I,II ENCO Workorder(s): CD06347 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Thursday, April 23, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Daniel B. Mays Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of 4 PROJECT NARRATIVE Date: 17 June 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11 Lab ID: CD06347 Overview (� �Eo www.encolabs.com This report is an amendment to the original report dated May 13, 2020 for this work order. This report was revised, at the client's request, to only report selenium by EPA method 601 OD. Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples QV-01 was appended to sample SW-5 for analyses 1,4-Dioxane, Bromochloromethane, Carbon tetrachloride, Chloroform, and Dibromomethane because the associated continuing calibration verification standard exhibited high bias; since the result is non -detect for the analyte there is no impact on data quality. Quality Control Remarks No Comments Other Comments The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Daniel Mays Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of 14 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-SWS Lab ID: CD06347-01 Sampled: 04/22/20 13:35 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:40 05/07/20 17:10 EPA 6020E EPA 3005A 10/19/20 04/24/20 10:38 04/28/20 15:57 EPA 8260D EPA 503013_MS 05/06/20 04/27/20 00:00 04/27/20 14:58 EPA 8260D EPA 503013_MS 05/06/20 05/04/20 15:59 05/05/20 07:45 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 14 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4103-SWS Lab ID: CD06347-01 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 0.91 J 0.80 2.0 ug/L EPA 8260D Barium - Total 40.5 1.10 10.0 ug/L EPA 6010D Copper - Total 4.63 J 1.60 10.0 ug/L EPA 6010D Vanadium - Total 1.85 J 1.40 10.0 ug/L EPA 6010D Xylenes (Total) 1.5 J 0.45 3.0 ug/L EPA 8260D Zinc - Total 10.1 4.40 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 of 14 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SW5 Lab Sample ID:CDO6347-01 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 13:35 Work Order: CD06347 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,1-Dichloroethane [75-34-3]A 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,1-Dichloroethene [75-35-4]A 0.21 U ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,2,3-Trichloropropane [96-18-4]A 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 U ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,2-Dibromoethane [106-93-4]A 0.66 U ug/L 1 0.66 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,2-Dichlorobenzene [95-50-1]A 0.19 U ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,2-Dichloroethane [107-06-2]A 0.21 U ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,2-Dichloropropane [78-87-5]A 0.10 U ug/L 1 0.10 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,4-Dichlorobenzene [106-46-7]A 0.19 U ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 4-Methyl-2-pentanone [108-10-1]A 1.1 U ug/L 1 1.1 5.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OE04039 EPA 8260D 05/05/20 07:45 CMK Acrylonitrile [107-13-1]A 3.5 U ug/L 1 3.5 10 OE04039 EPA 8260D 05/05/20 07:45 CMK Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK QV-01 Bromodichloromethane [75-27-4]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Bromoform [75-25-2]A 0.22 U ug/L 1 0.22 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Carbon disulfide [75-15-O]A 1.5 U ug/L 1 1.5 5.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK QV-01 Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Chloroform [67-66-3]A 0.18 U ug/L 1 0.18 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK QV-01 Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK cis-1,2-Dichloroethene [156-59-2]A 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Iodomethane [74-88-4]A 1.7 U ug/L 1 1.7 5.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Toluene [108-88-3]A 0.14 U ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK trans-1,2-Dichloroethene [156-60-5]A 0.21 U ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK trans-1,3-Dichloropropene [10061-02-6]A 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Trichloroethene [79-01-6]A 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Trichlorofluoromethane [75-69-4]A 0.24 U ug/L 1 0.24 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Vinyl chloride [75-01-4]A 0.32 U ug/L 1 0.32 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Xylenes (Total) [1330-20-7]A 1.5 J ug/L 1 0.45 3.0 OE04039 EPA 8260D 05/05/20 07:45 CMK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 Of 14 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SW5 Lab Sample ID:CD06347-01 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 13:35 Work Order: CD06347 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 49 1 50.0 99 % 53-136 OE04039 EPA 826OD 05105120 07:45 CMK Dibromofluoromethane 47 1 50.0 94 % 67-129 OE04039 EPA 826OD 05105120 07:45 CMK Toluene-d8 45 1 50.0 90 % 59-134 OE04039 EPA 626OD 05105120 07:45 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24022 EPA 6020B 04/28/20 15:57 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Barium [7440-39-3]^ 40.5 ug/L 1 1.10 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27010 EPA 6010D 05/07/20 17:10 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27010 EPA 6010D 05/07/20 17:10 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Copper[7440-50-8]^ 4.63 J ug/L 1 1.60 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24022 EPA 6020B 04/28/20 15:57 RLF Vanadium [7440-62-2]^ 1.85 J ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Zinc[744O-66-6]^ 10.1 ug/L 1 4.40 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.91 J ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 14:58 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.2 1 5.00 104 % 75-125 OD27030 EPA 8260D 0412712014:58 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 4 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OEO4O39 - EPA 5030E MS Blank (OE04039-BLK1) Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 01:50 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 48 u9/L 50.0 96 53-136 Dibromofluoromethane 47 u9/L 50.0 93 67-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 7 of 14 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OEO4O39 - EPA 5030E MS - Continued (� �Eo www.encolabs.com Blank (OE04039-BLK1) Continued Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 01:50 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 47 u9/L 50.0 94 59-134 LCS (OE04039-BS1) Prepared: 05/04/2020 15:59 Analyzed: 05/04/2020 23:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 23 1.0 ug/L 20.0 117 75-133 Benzene 21 1.0 ug/L 20.0 103 80-134 Chlorobenzene 19 1.0 ug/L 20.0 95 80-120 Toluene 18 1.0 ug/L 20.0 89 71-120 Trichloroethene 22 1.0 ug/L 20.0 108 74-120 Matrix Spike (OE04039-MS1) Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 00:13 Source: CD06682-13 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 26 1.0 ug/L 20.0 0.21 U 128 75-133 Benzene 21 1.0 ug/L 20.0 0.15 U 107 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 94 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 94 71-120 Trichloroethene 23 1.0 ug/L 20.0 0.15 U 116 74-120 Matrix Spike Dup (OE04039-MSD1) Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 00:45 Source: CD06682-13 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 0.21 U 106 75-133 19 20 Benzene 20 1.0 ug/L 20.0 0.15 U 100 80-134 7 17 Chlorobenzene 17 1.0 ug/L 20.0 0.17 U 87 80-120 8 16 Toluene 17 1.0 ug/L 20.0 0.14 U 85 71-120 10 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 103 74-120 12 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O22 - EPA 3OO5A Blank (OD24022-BLK1) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (OD24022-BSI) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:11 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.4 1.00 ug/L 20.0 107 80-120 Selenium 19.1 1.00 ug/L 20.0 95 80-120 Thallium 21.1 1.00 ug/L 20.0 105 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 4 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O22 - EPA 3OO5A - Continued Matrix Spike (OD24022-MS3) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:15 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.8 2.00 ug/L 40.0 0.740 U 107 75-125 Selenium 40.8 2.00 ug/L 40.0 1.82 U 102 75-125 Thallium 42.3 2.00 ug/L 40.0 0.220 U 106 75-125 Matrix Spike Dup (OD24022-MSDS) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:19 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.6 2.00 ug/L 40.0 0.740 U 107 75-125 0.4 20 Selenium 41.4 2.00 ug/L 40.0 1.82 U 103 75-125 1 20 Thallium 42.0 2.00 ug/L 40.0 0.220 U 105 75-125 0.5 20 Post Spike (OD24022-PS1) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:24 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 22.9 1.00 ug/L 20.0 0.0779 114 75-125 Selenium 21.1 1.00 ug/L 20.0-0.0151 105 75-125 Thallium 22.7 1.00 ug/L 20.0 0.0450 113 75-125 Batch OD27O1O - EPA 3OO5A Blank (OD27010-BLK1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L LCS (OD27030-BS1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:46 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits Arsenic 193 10.0 ug/L 200 97 80-120 Barium 190 10.0 ug/L 200 95 80-120 Beryllium 18.6 1.00 ug/L 20.0 93 80-120 Cadmium 19.2 1.00 ug/L 20.0 96 80-120 Chromium 185 10.0 ug/L 200 93 80-120 Cobalt 195 10.0 ug/L 200 98 80-120 Copper 186 10.0 ug/L 200 93 80-120 Lead 192 10.0 ug/L 200 96 80-120 RPD RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full Page 9 of 14 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD27O1O - EPA 3OO5A - Continued LCS (OD27010-BSI) Continued Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:46 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nickel 188 10.0 ug/L 200 94 80-120 Selenium 194 10.0 ug/L 200 97 80-120 Silver 188 10.0 ug/L 200 94 80-120 Vanadium 184 10.0 ug/L 200 92 80-120 Zinc 193 10.0 ug/L 200 97 80-120 Matrix Spike (OD27030-MS1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:48 Source: CD01673-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 183 10.0 ug/L 200 7.60 U 91 75-125 Barium 381 10.0 ug/L 200 200 90 75-125 Beryllium 22.0 1.00 ug/L 20.0 3.44 93 75-125 Cadmium 18.8 1.00 ug/L 20.0 0.360 U 94 75-125 Chromium 183 10.0 ug/L 200 1.40 U 92 75-125 Cobalt 192 10.0 ug/L 200 1.40 U 96 75-125 Copper 183 10.0 ug/L 200 1.60 U 91 75-125 Lead 190 10.0 ug/L 200 3.10 U 95 75-125 Nickel 184 10.0 ug/L 200 2.20 U 92 75-125 Selenium 194 10.0 ug/L 200 6.20 U 97 75-125 Silver 184 10.0 ug/L 200 1.90 U 92 75-125 Vanadium 183 10.0 ug/L 200 1.40 U 91 75-125 Zinc 193 10.0 ug/L 200 4.40 U 97 75-125 Matrix Spike Dup (OD27010-MSD1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:51 Source: CD01673-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 190 10.0 ug/L 200 7.60 U 95 75-125 4 20 Barium 387 10.0 ug/L 200 200 93 75-125 2 20 Beryllium 22.3 1.00 ug/L 20.0 3.44 94 75-125 1 20 Cadmium 19.2 1.00 ug/L 20.0 0.360 U 96 75-125 2 20 Chromium 186 10.0 ug/L 200 1.40 U 93 75-125 2 20 Cobalt 196 10.0 ug/L 200 1.40 U 98 75-125 2 20 Copper 186 10.0 ug/L 200 1.60 U 93 75-125 2 20 Lead 194 10.0 ug/L 200 3.10 U 97 75-125 2 20 Nickel 187 10.0 ug/L 200 2.20 U 93 75-125 1 20 Selenium 191 10.0 ug/L 200 6.20 U 95 75-125 2 20 Silver 186 10.0 ug/L 200 1.90 U 93 75-125 1 20 Vanadium 186 10.0 ug/L 200 1.40 U 93 75-125 2 20 Zinc 199 10.0 ug/L 200 4.40 U 100 75-125 3 20 Post Spike (OD27010-PS1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:53 Source: CD01673-02 Spike Source Analvte Result Flaq POL Units Level Result %REC Arsenic 0.187 0.0100 mg/L 0.200 -0.00583 93 Barium 0.395 0.0100 mg/L 0.200 0.200 97 Beryllium 0.0231 0.00100 mg/L 0.0200 0.00344 98 Cadmium 0.0200 0.00100 mg/L 0.0200 -0.000201 100 Chromium 0.194 0.0100 mg/L 0.200 0.000281 97 %REC Limits RPD 80-120 80-120 80-120 80-120 80-120 RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 Of 14 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD27O1O - EPA 3OO5A - Continued Post Spike (OD27010-PS1) Continued Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:53 Source: CD01673-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cobalt 0.206 0.0100 mg/L 0.200 0.000733 103 80-120 Copper 0.195 0.0100 mg/L 0.200 0.000500 97 80-120 Lead 0.202 0.0100 mg/L 0.200 0.00180 100 80-120 Nickel 0.194 0.0100 mg/L 0.200 -0.00177 97 80-120 Selenium 0.203 0.0100 mg/L 0.200 -0.00224 101 80-120 Silver 0.189 0.0100 mg/L 0.200 0.000553 94 80-120 Vanadium 0.194 0.0100 mg/L 0.200 0.000364 97 80-120 Zinc 0.200 0.0100 mg/L 0.200 0.00302 99 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD27O3O - EPA 5O3OB MS Blank (OD27030-BLK3) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 10:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 u 2.0 ug/L Toluene-d8 5.1 u91L 5.00 102 75-125 LCS (OD27030-BSI) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 09:21 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 97 80-133 Toluene-d8 4.9 u91L 5.00 96 75-125 Matrix Spike (OD27030-MS1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:14 Source: AD02710-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 95 80-133 Toluene-& 5.2 u91L 5.00 104 75-125 Matrix Spike Dup (OD27030-MSD1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:39 Source: AD02710-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 0.80 U 98 80-133 3 19 Toluene-& 4.9 u91L 5.00 98 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 14 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 of 14 o a S a x v 0 w 3 o m m_ m x m r c v e [D ro CD o 2. m m c_n C L 3 i mN N m ° 3 m sv Er Q n a o Page 13 of 14 Sample Preservation Verification ENCO Cary Work Order. CD06347 Project: Client: Golder Associates. Inc. (00007) Project #: Logged In: 23-Apr-20 10:53 _ Logged By: Preservation Check Performed By: f CDO6347-01 White Street LF-Phase 1,11 1668421.106 John C King Date/Time Cont Type Pres (pH) PH Checked ! n Control pH Adjusted Daterrime Adjusted Reagent Used/Comments A 25OmLP+HNO3 <2 Y 1 N 1 NA Y N /` NA Rea ent Name ID 1 2 pH Strip ID: C (UFO Reagent Name ID 3 4 Reagent Name €D 5 6 C1ELMNTIPrsntlwko_PreservationCheck. rpt Page 14 of 14 WORK ORDER Printed: 5/13/2020 8:10:42AM CD06347 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Daniel B. Mays Project: White Street LF-Phase I,II Project Number: 1668421.106 PO #: Report To: Golder Associates, Inc. (G0007) Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 Phone: (336) 852-4903 Fax: (336) 852-4904 Invoice To: City of Greensboro (CI034) Richard Lovett 401 Patton Ave Greensboro, NC 27406 Phone :(336) 373-4188 Fax: Received By: John C King Date Received: 23-Apr-20 10:21 Logged In By: John C King Date Logged In: 23-Apr-20 10:53 Work Order Comments: C-2056 received at 0.7°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Tuesday, May 5, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.106, Project Name/Desc: White Street LF-Phase I,II ENCO Workorder(s): CDO5202 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Tuesday, April 21, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Daniel B. Mays Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of rJ PROJECT NARRATIVE Date: 5 May 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11 Lab ID: CD05202 Overview (� �Eo www.encolabs.com Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples Qualifying flag QL-02 was attached to samples 4103-MW13 for Bromochloromethane because the associated laboratory control sample exhibited high bias; since the result is ND, there is no impact on data quality. QM-07 was appended to the samples Matrix spike 1, Matrix spike duplicate 1, for analysis barium because the spike recovery was outside acceptable limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. QV-01 was appended to the sample 4103-MW13 for analyses 1,1,1-Trichloroethane, Acrylonitrile, Bromochloromethane, Chloroform, cis- 1,-Dichloroethene, Trichlorofluoromethane, Vinyl acetate, Tetrahydrofuran because the associated continuing calibration verification standard exhibited high bias; since the result is non -detect, there is no impact on data quality. Quality Control Remarks No Comments Other Comments The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Daniel Mays Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of �rJ (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-MW33 Lab ID: CD05202-01 Sampled: 04/20/20 16:26 Received: 04/21/20 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/17/20 04/22/20 13:51 04/27/20 10:19 EPA 6020E EPA 3005A 10/17/20 04/22/20 13:12 04/26/20 06:53 EPA 7470A EPA 7470A 05/18/20 04/23/20 12:50 04/24/20 16:57 EPA 8260D EPA 503013_MS 05/04/20 04/23/20 00:00 04/23/20 16:54 EPA 8260D EPA 503013_MS 05/04/20 04/28/20 16:05 04/28/20 20:51 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 15 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-MW33 Lab ID: CDO5202-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 98.9 1.10 10.0 ug/L EPA 6010D Vanadium - Total 4.15 J 1.40 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 15 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CD05202-01 Received: 04/21/20 12:30 Matrix: Ground Water Sampled:04/20/20 16:26 Work Order: CD05202 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK QV-01 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OD28029 EPA 8260D 04/28/20 20:51 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OD28029 EPA 8260D 04/28/20 20:51 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OD28029 EPA 8260D 04/28/20 20:51 CMK QV-01 Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK QL-02, QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OD28029 EPA 8260D Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OD28029 EPA 8260D Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 OD28029 EPA 8260D Carbon disulfide [75-15-O]^ 1.5 U ug/L 1 1.5 5.0 OD28029 EPA 8260D Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 OD28029 EPA 8260D Chlorobenzene [108-90-7]^ 0.17 U ug/L 1 0.17 1.0 OD28029 EPA 8260D Chloroethane [75-00-3]^ 0.23 U ug/L 1 0.23 1.0 OD28029 EPA 8260D Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OD28029 EPA 8260D Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 OD28029 EPA 8260D cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OD28029 EPA 8260D cis-1,3-Dichloropropene [10061-01-5]^ 0.20 U ug/L 1 0.20 1.0 OD28029 EPA 8260D Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 OD28029 EPA 8260D Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 OD28029 EPA 8260D Ethylbenzene [100-41-4]^ 0.13 U ug/L 1 0.13 1.0 OD28029 EPA 8260D Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OD28029 EPA 8260D Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 OD28029 EPA 8260D Styrene [100-42-5]^ 0.11 U ug/L 1 0.11 1.0 OD28029 EPA 8260D Tetrachloroethene [127-18-4]^ 0.17 U ug/L 1 0.17 1.0 OD28029 EPA 8260D Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 OD28029 EPA 8260D Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OD28029 EPA 8260D trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OD28029 EPA 8260D trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OD28029 EPA 8260D trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 OD28029 EPA 8260D Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OD28029 EPA 8260D Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OD28029 EPA 8260D Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 OD28029 EPA 8260D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK QV-01 QV-01 QV-01 QV-01 04/28/20 20:51 CMK QV-01 04/28/20 20:51 CMK QV-01 Page 5 of 15 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CD05202-01 Received: 04/21/20 12:30 Matrix: Ground Water Sampled:04/20/20 16:26 Work Order: CD05202 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OD28029 EPA 8260D 04/28/20 20:51 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 97 % 53-136 OD28029 EPA 8260D 04126120 20:51 CMK Dibromofluoromethane 58 1 50.0 115 % 67-129 OD28029 EPA 8260D 04126120 20:51 CMK Toluene-d8 50 1 50.0 100 % 59-134 OD28029 EPA 8260D 04126120 20:51 CMK Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 OD23034 EPA 7470A 04/24/20 16:57 KAH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD22032 EPA 6020B 04/26/20 06:53 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Barium [7440-39-3]^ 98.9 ug/L 1 1.10 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD22034 EPA 6010D 04/27/20 10:19 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD22034 EPA 6010D 04/27/20 10:19 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD22032 EPA 6020B 04/26/20 06:53 RLF Vanadium [7440-62-2]^ 4.15 J ug/L 1 1.40 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OD23030 EPA 8260D 04/23/20 16:54 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 100 % 75-125 OD23030 EPA 8260D 0412312016:54 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of �rJ (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OD28O29 - EPA 5O3OB MS Blank (OD28029-BLK1) Prepared: 04/28/2020 15:05 Analyzed: 04/28/2020 18:15 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Tetrahydrofuran 0.53 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 49 u9/L 50.0 97 53-136 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 7 Of 15 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OD28O29 - EPA 5O3OB MS - Continued (� �Eo www.encolabs.com Blank (OD28029-BLK1) Continued Prepared: 04/28/2020 15:05 Analyzed: 04/28/2020 18:15 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Dibromofluoromethane 55 u9/L 50.0 110 67-129 Toluene-& 51 u9/L 50.0 101 59-134 LCS (OD28029-BSI) Prepared: 04/28/2020 15:05 Analyzed: 04/28/2020 16:03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 23 1.0 ug/L 20.0 113 75-133 Benzene 24 1.0 ug/L 20.0 121 80-134 Chlorobenzene 20 1.0 ug/L 20.0 101 80-120 Toluene 20 1.0 ug/L 20.0 99 71-120 Trichloroethene 24 1.0 ug/L 20.0 118 74-120 Matrix Spike (OD28029-MS1) Prepared: 04/28/2020 15:05 Analyzed: 04/28/2020 16:41 Source: CD06479-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 25 1.0 ug/L 20.0 0.21 U 123 75-133 Benzene 28 1.0 ug/L 20.0 3.5 124 80-134 Chlorobenzene 21 1.0 ug/L 20.0 0.17 U 106 80-120 Toluene 21 1.0 ug/L 20.0 0.14 U 105 71-120 Trichloroethene 59 1.0 ug/L 20.0 36 114 74-120 Matrix Spike Dup (OD28029-MSD1) Prepared: 04/28/2020 15:05 Analyzed: 04/28/2020 17:12 Source: CD06479-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 23 1.0 ug/L 20.0 0.21 U 115 75-133 7 20 Benzene 28 1.0 ug/L 20.0 3.5 122 80-134 2 17 Chlorobenzene 21 1.0 ug/L 20.0 0.17 U 103 80-120 3 16 Toluene 20 1.0 ug/L 20.0 0.14 U 102 71-120 3 17 Trichloroethene 58 1.0 ug/L 20.0 36 107 74-120 3 22 Metals by EPA 6000/7000 Series Methods - Quality Control Batch OD23O34 - EPA 747OA Blank (OD23034-BLK3) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:14 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 0.150 U 0.200 ug/L LCS (OD23034-BSI) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:17 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.90 0.200 ug/L 5.00 98 80-120 Matrix Spike (OD23034-MS1) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:22 Source: CD05554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.95 0.200 ug/L 5.00 0.150 U 99 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 8 Of 15 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals by EPA 6000/7000 Series Methods - Quality Control Batch OD23O34 - EPA 747OA - Continued Matrix Spike Dup (OD23034-MSDS) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:25 Source: CD05554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.40 0.200 ug/L 5.00 0.150 U 108 75-125 9 25 Post Spike (OD23034-PS1) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:27 Source: CD05554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.37 0.200 ug/L 5.00 0.00600 107 75-125 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD22O32 - EPA 3OO5A Blank (OD22032-BLK3) Prepared: 04/22/2020 13:12 Analyzed: 04/26/2020 06:27 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (OD22032-BS1) Prepared: 04/22/2020 13:12 Analyzed: 04/26/2020 06:31 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.7 1.00 ug/L 20.0 108 80-120 Selenium 21.1 1.00 ug/L 20.0 106 80-120 Thallium 22.3 1.00 ug/L 20.0 111 80-120 Matrix Spike (OD22032-MS3) Prepared: 04/22/2020 13:12 Analyzed: 04/26/2020 06:36 Source: CD05206-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 43.7 2.00 ug/L 40.0 0.740 U 109 75-125 Selenium 43.0 2.00 ug/L 40.0 1.82 U 108 75-125 Thallium 43.8 2.00 ug/L 40.0 0.220 U 110 75-125 Matrix Spike Dup (011322032-MS1131) Prepared: 04/22/2020 13:12 Analyzed: 04/26/2020 06:40 Source: CD05206-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 43.0 2.00 ug/L 40.0 0.740 U 108 75-125 2 20 Selenium 43.5 2.00 ug/L 40.0 1.82 U 109 75-125 1 20 Thallium 43.3 2.00 ug/L 40.0 0.220 U 108 75-125 1 20 Post Spike (OD22032-PS3) Prepared: 04/22/2020 13:12 Analyzed: 04/26/2020 06:44 Source: CD05206-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.9 1.00 ug/L 20.0 0.0225 110 75-125 Selenium 21.8 1.00 ug/L 20.0 -0.101 109 75-125 Thallium 22.0 1.00 ug/L 20.0 0.000678 110 75-125 Batch OD22O34 - EPA 3OO5A FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 Of �rJ (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD22O34 - EPA 3OO5A - Continued Blank (OD22034-BLK1) Prepared: 04/22/2020 13:51 Analyzed: 04/27/2020 10:02 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L LCS (OD22034-BS1) Prepared: 04/22/2020 13:51 Analyzed: 04/27/2020 10:07 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 187 10.0 ug/L 200 94 80-120 Barium 197 10.0 ug/L 200 99 80-120 Beryllium 18.6 1.00 ug/L 20.0 93 80-120 Cadmium 19.4 1.00 ug/L 20.0 97 80-120 Chromium 188 10.0 ug/L 200 94 80-120 Cobalt 188 10.0 ug/L 200 94 80-120 Copper 184 10.0 ug/L 200 92 80-120 Lead 183 10.0 ug/L 200 92 80-120 Nickel 191 10.0 ug/L 200 96 80-120 Selenium 193 10.0 ug/L 200 96 80-120 Silver 187 10.0 ug/L 200 94 80-120 Vanadium 187 10.0 ug/L 200 94 80-120 Zinc 196 10.0 ug/L 200 98 80-120 Matrix Spike (OD22034-MS1) Prepared: 04/22/2020 13:51 Analyzed: 04/27/2020 10:10 Source: CD05206-01 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 199 10.0 ug/L 200 7.60 U 100 75-125 Barium 291 10.0 ug/L 200 25.3 133 75-125 QM-07 Beryllium 19.3 1.00 ug/L 20.0 0.160 U 97 75-125 Cadmium 19.9 1.00 ug/L 20.0 0.360 U 99 75-125 Chromium 194 10.0 ug/L 200 1.40 U 97 75-125 Cobalt 195 10.0 ug/L 200 1.40 U 97 75-125 Copper 193 10.0 ug/L 200 1.60 U 97 75-125 Lead 194 10.0 ug/L 200 3.10 U 97 75-125 Nickel 195 10.0 ug/L 200 2.20 U 97 75-125 Selenium 206 10.0 ug/L 200 6.20 U 103 75-125 Silver 194 10.0 ug/L 200 1.90 U 97 75-125 Vanadium 199 10.0 ug/L 200 1.40 U 99 75-125 Zinc 209 10.0 ug/L 200 4.40 U 104 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 of 15 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD22O34 - EPA 3OO5A - Continued Matrix Spike Dup (OD22034-MSDS) Prepared: 04/22/2020 13:51 Analyzed: 04/27/2020 10:12 Source: CD05206-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 198 10.0 ug/L 200 7.60 U 99 75-125 0.6 20 Barium 292 10.0 ug/L 200 25.3 133 75-125 0.4 20 QM-07 Beryllium 19.2 1.00 ug/L 20.0 0.160 U 96 75-125 0.8 20 Cadmium 19.4 1.00 ug/L 20.0 0.360 U 97 75-125 3 20 Chromium 193 10.0 ug/L 200 1.40 U 96 75-125 0.6 20 Cobalt 191 10.0 ug/L 200 1.40 U 96 75-125 2 20 Copper 192 10.0 ug/L 200 1.60 U 96 75-125 0.6 20 Lead 189 10.0 ug/L 200 3.10 U 94 75-125 2 20 Nickel 195 10.0 ug/L 200 2.20 U 98 75-125 0.3 20 Selenium 199 10.0 ug/L 200 6.20 U 99 75-125 3 20 Silver 193 10.0 ug/L 200 1.90 U 96 75-125 0.4 20 Vanadium 197 10.0 ug/L 200 1.40 U 99 75-125 0.6 20 Zinc 204 10.0 ug/L 200 4.40 U 102 75-125 2 20 Post Spike (OD22034-PS1) Prepared: 04/22/2020 13:51 Analyzed: 04/27/2020 10:14 Source: CD05206-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.196 0.0100 mg/L 0.200 -0.00758 98 80-120 Barium 0.231 0.0100 mg/L 0.200 0.0253 103 80-120 Beryllium 0.0192 0.00100 mg/L 0.0200 -8.93E-5 96 80-120 Cadmium 0.0196 0.00100 mg/L 0.0200 -0.000107 98 80-120 Chromium 0.194 0.0100 mg/L 0.200 0.000888 97 80-120 Cobalt 0.195 0.0100 mg/L 0.200 0.000200 97 80-120 Copper 0.192 0.0100 mg/L 0.200 -0.000730 96 80-120 Lead 0.195 0.0100 mg/L 0.200 -0.00368 97 80-120 Nickel 0.195 0.0100 mg/L 0.200 -5.96E-5 98 80-120 Selenium 0.197 0.0100 mg/L 0.200 -0.00754 98 80-120 Silver 0.185 0.0100 mg/L 0.200 -0.00163 93 80-120 Vanadium 0.193 0.0100 mg/L 0.200 -3.16E-5 96 80-120 Zinc 0.205 0.0100 mg/L 0.200 0.00129 102 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD23O3O - EPA 5O3OB MS Blank (OD23030-BLK3) Prepared: 04/23/2020 00:00 Analyzed: 04/23/2020 12:09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 5.2 u9/L 5.00 104 75-125 LCS (OD23030-BSI) Prepared: 04/23/2020 00:00 Analyzed: 04/23/2020 11:43 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 20.0 119 80-133 Toluene-d8 5.0 u9/L 5.00 99 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 15 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD23O3O - EPA 5O3OB MS - Continued Matrix Spike (OD23030-MS1) Prepared: 04/23/2020 00:00 Analyzed: 04/23/2020 21:11 Source: AD02609-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 20.0 0.80 U 126 80-133 Toluene-d8 4.9 u9/L 5.00 98 75-125 Matrix Spike Dup (OD23030-MSD1) Prepared: 04/23/2020 00:00 Analyzed: 04/23/2020 21:36 Source: AD02609-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 20.0 0.80 U 127 80-133 1 19 Toluene-d8 4.9 u9/L 5.00 99 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 Of rJ (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QL-02 The associated laboratory control sample exhibited high bias; since the result is ND, there is no impact. QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 of 15 47 G1 O f w ro 9 ca O o y 3 m n m y � x Wv � Q a C m l' v 3 m a m 0 m N a N � N a` 0 m 0 w a w A It 1`V W l Q r r' f ql f'�11 O Q � V n � m � � m Q a m d m c � � m n q. CD m qJ c a' ro � . u (a a m 0 w a Q ` n7 3 N = � m b [1 • m - n G� D' ca m o � n w % n -4 m m x is w m a m Sample Preservation Verification ENCO Cary ENCO Work Order: CDO5202 Project: White Street LF-Phase 1,11 Client: Golder Associates, Inc. (G0007) Project#: 1668421.106 Logged In: 21-Apr-20 12:41 Logged By: John C King f r Preservation Check Performed By: ;::> H Date/Time: CDO5202-01 Cont YP Type Pres (pH) Requirement pH Checked ! In Control DateMme pH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y I N/ NA Y 1 NA Rea-clent Name ID 1 2 pH Strip ID: V ((� Rea ent Name ID 3 4 Rea ent Name ID 5 6 Page 15 of 15 C:IELMNTIPrintlwko_Preservation Check. rpt ,-,_ ,_ WORK ORDER Printed: 5/5/2020 10:27:03AM CD05202 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Daniel B. Mays Project: White Street LF-Phase I,II Project Number: 1668421.106 PO #: Report To: Golder Associates, Inc. (G0007) Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 Phone: (336) 852-4903 Fax: (336) 852-4904 Invoice To: City of Greensboro (CI034) Richard Lovett 401 Patton Ave Greensboro, NC 27406 Phone :(336) 373-4188 Fax: Received By: David E. Wilder Date Received: 21-Apr-20 12:30 Logged In By: John C King Date Logged In: 21-Apr-20 12:41 Work Order Comments: C-2056 received at 0.9°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 GOLFER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 4 Project Name: White Street Landfill — Phase I, II Project Reference Number. 19131339,101 Sampling Event Date: April 20-23, 2020 Review Date: June 11, 2020 Report #: CD06347, CD06202 G 0 L D E P Initials: NTT Initials: RK Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain -of -custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: Region III Modifications to Functional Guidelines for Organic Data Review Multi -Media, Multi -Concentration, September 1994; Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTIE I_IST(S) +;check all that apply) NC Closed FacilitylC & D List NC Appendix I VOAs and RCRA Metals NC Appendix I + Detects X NC Appendix II + detects NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW NTT COC was properly signed by all parties. NTT Correct project name and number are on the form. I* Incorrected project number on COC. Should be 19131339.101 NTT Sample receipt condition at laboratory was acceptable. NTT Each sample and blank submitted for analysis appears in the report. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 4 2.0 SAMPLE HOLDING TIMES 4 GOLDEP NTT Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). Review Criteria Method Anal tes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW NTT Laboratory analyzed at least one internal blank for each method, where applicable. NTT Laboratory blank is interference -free _ NTT Surrogate recoveries are provided for each analytical method, where applicable. NTT Surrogate recoveries for each method are within the acceptable limits (i.e-, at least 50% of the surrogates were within range). NTT MS/MSD/LCS data results are provided for each analytical method. NTT MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). (CDO5202) QM-07 was appended to the samples Matrix spike 1, Matrix spike duplicate 1, for analysis barium because the spike recovery was outside acceptable limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. 4.0 ANALYTE LISTS/METHODS NTT The proper number of constituents are present for each analyte list as identified above (including detects where applicable). NTT Proper EPA SW-846 analytical methods were used for analysis. GOLDER ASSOCIATES INC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW G 0 L D E P Page 3 of 4 5.0 DATA REPORTING NTT All analytical reporting associated with the event was performed by the contracted lab. NTT Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been 'flagged' with a `B' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 1 OX for commonly detected laboratory contaminants -acetone, methylene chloride and phthaiates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. NTT it is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. Antimony and Thallium (2X) on MW-13 Antimony and Thallium (2X) on SW-5 NTT The report provides the reporting limit for each constituent, NTT The results were reported at or below their proper reporting limits (i.e. at or below standards at MDLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. NTT No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Interim Maximum Allowable Concentrations (IMACs) or surface water standards in wells or field/equipment/trip blanks or above applicable Surface Water Standards for surface water points, Vanadium (NC 2L= 0.3 uglL) IP MWA3 a@ 4.15 ug/L (J) • SW-5 @ 1.85 (J) ug/L NTT No quantifiable inorganic or organic constituents were detected in a well or surface water point at concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). NTT Other report issueslCommunications with laboratoryletc.: • Selenium reported twice for SW-5 by multiple methods. Contacted the laboratory to revise report. ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Friday, May 8, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.107, Project Name/Desc: White Street LF-Phase II MNA ENCO Workorder(s): CDO5225 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Thursday, April 23, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Daniel B. Mays Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of H PROJECT NARRATIVE Date: 8 May 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase II MNA Lab ID: CD05225 Overview (� �Eo www.encolabs.com Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples QM-07 was appended to the MS2 sample because the spike recovery was outside acceptable limits for the MS and/or MSD. The batch was acceptaed based on acceptable lower control spike recovery. Quality Control Remarks No Comments Other Comments The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Daniel Mays Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of 18 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-IIl Lab ID: CDO5225-01 Sampled: 04/22/20 12:42 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 310.2 NO PREP 05/06/20 04/24/20 11:29 04/24/20 13:32 EPA 353.2 NO PREP 04/24/20 12:42 04/23/20 13:23 04/23/20 14:43 EPA 353.2 [CALC] 04/24/20 12:42 04/28/20 16:08 04/29/20 11:54 EPA 353.2 NO PREP 05/20/20 04/28/20 16:08 04/29/20 11:54 RSK-175 Same 05/06/20 04/28/20 07:33 04/28/20 09:49 SM 4500S2 D-2011 NO PREP 04/29/20 04/27/20 17:41 04/27/20 18:01 SM 531OB-2011 Same 05/20/20 05/06/20 11:34 05/06/20 14:46 Volatile Fatty Acids NO PREP 05/20/20 04/29/20 13:30 04/29/20 16:54 Client ID: 4103-II1 Lab ID: CD05225-01RE3 Sampled: 04/22/20 12:42 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 05/20/20 04/24/20 11:16 04/25/20 06:45 Client ID: 4103-II9 Lab ID: CDO5225-02 Sampled: 04/22/20 10:49 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 310.2 NO PREP 05/06/20 04/24/20 11:29 04/24/20 13:33 EPA 353.2 NO PREP 04/24/20 10:49 04/23/20 13:23 04/23/20 14:44 EPA 353.2 [CALC] 04/24/20 10:49 04/28/20 16:08 04/29/20 11:56 EPA 353.2 NO PREP 05/20/20 04/28/20 16:08 04/29/20 11:56 RSK-175 Same 05/06/20 04/28/20 07:33 04/28/20 10:21 SM 4500S2 D-2011 NO PREP 04/29/20 04/27/20 17:41 04/27/20 18:01 SM 531OB-2011 Same 05/20/20 05/06/20 11:34 05/06/20 14:46 Volatile Fatty Acids NO PREP 05/20/20 04/29/20 13:30 04/29/20 17:33 Client ID: 4103-II9 Lab ID: CDO5225-02RE3 Sampled: 04/22/20 10:49 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 05/20/20 04/24/20 11:16 04/25/20 07:03 Client ID: 4303-SMW3 Lab ID: CDO5225-03 Sampled: 04/22/20 13:09 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 310.2 NO PREP 05/06/20 04/24/20 11:29 04/24/20 13:33 EPA 353.2 NO PREP 04/24/20 13:09 04/23/20 13:23 04/23/20 14:45 EPA 353.2 [CALC] 04/24/20 13:09 04/28/20 16:08 04/29/20 11:57 EPA 353.2 NO PREP 05/20/20 04/28/20 16:08 04/29/20 11:57 RSK-175 Same 05/06/20 04/28/20 07:33 04/28/20 10:37 SM 4500S2 D-2011 NO PREP 04/29/20 04/27/20 17:41 04/27/20 18:01 SM 531OB-2011 Same 05/20/20 05/06/20 11:34 05/06/20 14:46 Volatile Fatty Acids NO PREP 05/20/20 04/29/20 13:30 04/29/20 18:12 Client ID: 4303-SMW3 Lab ID: CDO5225-03RE3 Sampled: 04/22/20 13:09 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 05/20/20 04/24/20 11:16 04/25/20 07:20 Client ID: 4103-MW14 Lab ID: CD05225-04 Sampled: 04/22/20 08:28 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 310.2 NO PREP 05/06/20 04/24/20 11:29 04/24/20 13:34 EPA 353.2 NO PREP 04/24/20 08:28 04/23/20 13:23 04/23/20 14:47 EPA 353.2 [CALC] 04/24/20 08:28 04/28/20 16:08 04/29/20 11:59 EPA 353.2 NO PREP 05/20/20 04/28/20 16:08 04/29/20 11:59 RSK-175 Same 05/06/20 04/28/20 07:33 04/28/20 10:53 SM 4500S2 D-2011 NO PREP 04/29/20 04/27/20 17:41 04/27/20 18:01 SM 531OB-2011 Same 05/20/20 05/06/20 11:34 05/06/20 14:46 Volatile Fatty Acids NO PREP 05/20/20 04/29/20 13:30 04/29/20 18:51 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 18 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-MW34 Lab ID: CD05225-04RE3 Sampled: 04/22/20 08:28 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) EPA 300.0 NO PREP 05/20/20 Prep Date/Time(s) Analysis Date/Time(s) 04/24/20 11:16 04/25/20 07:38 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 18 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4103-IIl Lab ID: CDO5225-01 Analvte Results Flag MDL PQL Units Method Notes Acetic Acid 24000 180 200 ug/L Volatile Fatty Acids Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 3700 130 140 ug/L Volatile Fatty Acids Methane 16.6 0.450 1.00 ug/L RSK-175 Nitrate as N 0.052 J 0.041 0.10 mg/L EPA 353.2 Nitrate/Nitrite as N 52 J 41 100 ug/L EPA 353.2 Total Alkalinity as CaCO3 1700000 D 140000 150000 ug/L EPA 310.2 Total Organic Carbon 45000 340 1000 ug/L SM 531OB-2011 Client ID: 4103-IIl Lab ID: CDO5225-01RE3 Analvte Results Flag MDL PQL Units Method Notes Chloride 570000 D 220000 500000 ug/L EPA 300.0 Client ID: 4103-II9 Lab ID: CDO5225-02 Analvte Results Flag MDL POLL Units Method Notes Methane 2.68 0.450 1.00 ug/L RSK-175 Total Alkalinity as CaCO3 110000 D 70000 75000 ug/L EPA 310.2 Total Organic Carbon 2800 340 1000 ug/L SM 531OB-2011 Client ID: 4103-II9 Lab ID: CDO5225-02RE3 Analvte Results Flag MDL PQL Units Method Notes Chloride 34000 ]D 22000 50000 ug/L EPA 300.0 Sulfate as SO4 49000 ]D 29000 50000 ug/L EPA 300.0 Client ID: 4303-SMW3 Lab ID: CDO5225-03 Analvte Results Flag MDL PQL Units Method Notes Methane 24.0 0.450 1.00 ug/L RSK-175 Total Alkalinity as CaCO3 380000 D 70000 75000 ug/L EPA 310.2 Total Organic Carbon 3300 340 1000 ug/L SM 531OB-2011 Client ID: 4303-SMW3 Lab ID: CDO5225-03RE3 Analvte Results Flag MDL PQL Units Method Notes Chloride 36000 ]D 22000 50000 ug/L EPA 300.0 Sulfate as SO4 36000 ]D 29000 50000 ug/L EPA 300.0 Client ID: 4303-MW34 Lab ID: CDO5225-04RE3 Analvte Results Flag MDL PQL Units Method Notes Chloride 4000 1 2200 5000 ug/L EPA 300.0 Sulfate as SO4 3000 1 2900 5000 ug/L EPA 300.0 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Pager) Of 18 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-IIl Lab Sample ID:CDO5225-01 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 12:42 Work Order: CDO5225 Project: White Street LF-Phase II MNA Sampled By:Travis Martinez/Nicolas Tej Classical Chemistry Parameters ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Chloride [16887-00-6]^ 570000 D ug/L 100 220000 500000 0D24023 EPA 300.0 04/25/20 06:45 UI Nitrate as N [14797-55-8] 0.052 J mg/L 1 0.041 0.10 [CALC] EPA 353.2 04/29/20 11:54 JAH Nitrate/Nitrite as N^ 52 J ug/L 1 41 100 0D28032 EPA 353.2 04/29/20 11:54 JAH Nitrite as N [14797-65-0]^ 17 U ug/L 1 17 100 0D23037 EPA 353.2 04/23/20 14:43 JAH Sulfate as SO4 [14808-79-8]^ 290000 UD ug/L 100 290000 500000 0D24023 EPA 300.0 04/25/20 06:45 UI Sulfide[18496-25-8]^ 10 U ug/L 1 10 100 0D27034 iM 450052 D-2011 04/27/20 18:01 JOC Total Alkalinity as CaCO3 [471-34-1]^ 1700000 D ug/L 10 140000 150000 0D24028 EPA 310.2 04/24/20 13:32 JAH Volatile Fatty Acids by HPLC Analyte rCAS Numberl Results Flaa Units DF MOIL P L Batch Method Analyzed Ay Notes Acetic Acid [64-19-7] 24000 ug/L 1 180 200 0D29032 ✓olatile Fatty Acids 04/29/20 16:54 JFI Butyric Acid [107-92-6] 89 U ug/L 1 89 100 0D29032 ✓olatile Fatty Acids 04/29/20 16:54 JFI Hexanoic Acid [142-62-1] 260 U ug/L 1 260 500 0D29032 ✓olatile Fatty Acids 04/29/20 16:54 JFI iso-Hexanoic Acid [646-07-1] 440 U ug/L 1 440 500 0D29032 ✓olatile Fatty Acids 04/29/20 16:54 JFI iso-Pentanoic Acid [503-74-2] 180 U ug/L 1 180 200 0D29032 ✓olatile Fatty Acids 04/29/20 16:54 JFI Lactic Acid/HIBA (2-Hydroxyisobutyric 3700 ug/L 1 130 140 0D29032 ✓olatile Fatty Acids 04/29/20 16:54 JFI Acid)[50-21-5/594-61-6] Pentanoic Acid [109-52-4] 140 U ug/L 1 140 200 0D29032 ✓olatile Fatty Acids 04/29/20 16:54 JFI Propionic Acid [79-09-4] 65 U ug/L 1 65 100 0D29032 ✓olatile Fatty Acids 04/29/20 16:54 JFI Pyruvic Acid [127-17-3] 21 U ug/L 1 21 70 0D29032 ✓olatile Fatty Acids 04/29/20 16:54 JFI Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffy Notes Trimethylacetic acid 21000 1 20000 103 % 50-150 0D29032 Volatile Fatty Acid-, 04/29/2016:54 JFI Classical Chemistry Parameters ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MOIL P L Batch Method Analyzed Notes Total Organic Carbon 45000 ug/L 1 340 1000 0E06041 SM 531OB-2011 05/06/20 14:46 RSA Dissolved Gases by GC Analyte rCAS Numberl Results Flag Units DF MOIL P L Batch Method Analyzed By Notes Ethane [74-84-0] 1.00 U ug/L 1 1.00 2.00 0D28001 RSK-175 04/28/20 09:49 LTS Ethene [74-85-1] 1.00 U ug/L 1 1.00 3.00 0D28001 RSK-175 04/28/20 09:49 LTS Methane [74-82-8] 16.6 ug/L 1 0.450 1.00 0D28001 RSK-175 04/28/20 09:49 LTS FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 of 18 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II9 Lab Sample ID:CDO5225-02 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 10:49 Work Order: CDO5225 Project: White Street LF-Phase II MNA Sampled By:Travis Martinez/Nicolas Tej Classical Chemistry Parameters ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Chloride [16887-00-6]^ 34000 JD ug/L 10 22000 50000 OD24023 EPA 300.0 04/25/20 07:03 UI Nitrate as N [14797-55-8] 0.041 u mg/L 1 0.041 0.10 [CALC] EPA 353.2 04/29/20 11:56 JAH Nitrate/Nitrite as N^ 41 u ug/L 1 41 100 OD28032 EPA 353.2 04/29/20 11:56 JAH Nitrite as N [14797-65-0]^ 17 U ug/L 1 17 100 OD23037 EPA 353.2 04/23/20 14:44 JAH Sulfate as SO4 [14808-79-8]^ 49000 JD ug/L 10 29000 50000 OD24023 EPA 300.0 04/25/20 07:03 UI Sulfide[18496-25-8]^ 10 U ug/L 1 10 100 OD27034 iM 450OS2 D-2011 04/27/20 18:01 JOC Total Alkalinity as CaCO3 [471-34-1]^ 110000 D ug/L 5 70000 75000 OD24028 EPA 310.2 04/24/20 13:33 JAH Volatile Fatty Acids by HPLC Analyte rCAS Numberl Results Flaa Units DF MOIL Q Batch Method Analyzed Ay Notes Acetic Acid [64-19-7] 180 U ug/L 1 180 200 OD29032 ✓olatile Fatty Acids 04/29/20 17:33 JFI Butyric Acid [107-92-6] 89 U ug/L 1 89 100 OD29032 ✓olatile Fatty Acids 04/29/20 17:33 JFI Hexanoic Acid [142-62-1] 260 U ug/L 1 260 500 OD29032 ✓olatile Fatty Acids 04/29/20 17:33 JFI iso-Hexanoic Acid [646-07-1] 440 U ug/L 1 440 500 OD29032 ✓olatile Fatty Acids 04/29/20 17:33 JFI iso-Pentanoic Acid [503-74-2] 180 U ug/L 1 180 200 OD29032 ✓olatile Fatty Acids 04/29/20 17:33 JFI Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 130 U ug/L 1 130 140 OD29032 ✓olatile Fatty Acids 04/29/20 17:33 JFI [50-21-5/594-61-6] Pentanoic Acid [109-52-4] 140 u ug/L 1 140 200 OD29032 ✓olatile Fatty Acids 04/29/20 17:33 JFI Propionic Acid [79-09-4] 65 u ug/L 1 65 100 OD29032 ✓olatile Fatty Acids 04/29/20 17:33 JFI Pyruvic Acid [127-17-3] 21 u ug/L 1 21 70 OD29032 ✓olatile Fatty Acids 04/29/20 17:33 JFI Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffy Notes Trimethylacetic acid 22000 1 20000 110 % 50-150 OD29032 Volatile Fatty Acid-, 04/29/201733 JFI Classical Chemistry Parameters ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MOIL P L Batch Method Analyzed Notes Total Organic Carbon 2800 ug/L 1 340 1000 OE06041 SM 531OB-2011 05/06/20 14:46 RSA Dissolved Gases by GC Analyte rCAS Numberl Results Flag Units DF MOIL P L Batch Method Analyzed By Notes Ethane [74-84-0] 1.00 U ug/L 1 1.00 2.00 OD28001 RSK-175 04/28/20 10:21 LTS Ethene [74-85-1] 1.00 U ug/L 1 1.00 3.00 OD28001 RSK-175 04/28/20 10:21 LTS Methane [74-82-8] 2.68 ug/L 1 0.450 1.00 OD28001 RSK-175 04/28/20 10:21 LTS FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 of 18 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW3 Lab Sample ID:CDO5225-03 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 13:09 Work Order: CDO5225 Project: White Street LF-Phase II MNA Sampled By:Travis Martinez/Nicolas Tej Classical Chemistry Parameters ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Chloride [16887-00-6]^ 36000 JD ug/L 10 22000 50000 OD24023 EPA 300.0 04/25/20 07:20 LII Nitrate as N [14797-55-8] 0.041 u mg/L 1 0.041 0.10 [CALC] EPA 353.2 04/29/20 11:57 JAH Nitrate/Nitrite as N^ 41 u ug/L 1 41 100 OD28032 EPA 353.2 04/29/20 11:57 JAH Nitrite as N [14797-65-0]^ 17 U ug/L 1 17 100 OD23037 EPA 353.2 04/23/20 14:45 JAH Sulfate as SO4 [14808-79-8]^ 36000 JD ug/L 10 29000 50000 OD24023 EPA 300.0 04/25/20 07:20 UI Sulfide[18496-25-8]^ 10 U ug/L 1 10 100 OD27034 iM 450OS2 D-2011 04/27/20 18:01 JOC Total Alkalinity as CaCO3 [471-34-1]^ 380000 D ug/L 5 70000 75000 OD24028 EPA 310.2 04/24/20 13:33 JAH Volatile Fatty Acids by HPLC Analyte rCAS Numberl Results Flaa Units DF MOIL Q Batch Method Analyzed Ay Notes Acetic Acid [64-19-7] 180 U ug/L 1 180 200 OD29032 ✓olatile Fatty Acids 04/29/20 18:12 JFI Butyric Acid [107-92-6] 89 U ug/L 1 89 100 OD29032 ✓olatile Fatty Acids 04/29/20 18:12 JFI Hexanoic Acid [142-62-1] 260 U ug/L 1 260 500 OD29032 ✓olatile Fatty Acids 04/29/20 18:12 JFI iso-Hexanoic Acid [646-07-1] 440 U ug/L 1 440 500 OD29032 ✓olatile Fatty Acids 04/29/20 18:12 JFI iso-Pentanoic Acid [503-74-2] 180 U ug/L 1 180 200 OD29032 ✓olatile Fatty Acids 04/29/20 18:12 JFI Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 130 U ug/L 1 130 140 OD29032 ✓olatile Fatty Acids 04/29/20 18:12 JFI [50-21-5/594-61-6] Pentanoic Acid [109-52-4] 140 u ug/L 1 140 200 OD29032 ✓olatile Fatty Acids 04/29/20 18:12 JFI Propionic Acid [79-09-4] 65 u ug/L 1 65 100 OD29032 ✓olatile Fatty Acids 04/29/20 18:12 JFI Pyruvic Acid [127-17-3] 21 u ug/L 1 21 70 OD29032 ✓olatile Fatty Acids 04/29/20 18:12 JFI Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffy Notes Trimethylacetic acid 25000 1 20000 126 % 50-150 OD29032 Volatile Fatty Acid-, 04/29/2018:12 JFI Classical Chemistry Parameters ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MOIL P L Batch Method Analyzed Notes Total Organic Carbon 3300 ug/L 1 340 1000 OE06041 SM 531OB-2011 05/06/20 14:46 RSA Dissolved Gases by GC Analyte rCAS Numberl Results Flag Units DF MOIL P L Batch Method Analyzed By Notes Ethane [74-84-0] 1.00 U ug/L 1 1.00 2.00 OD28001 RSK-175 04/28/20 10:37 LTS Ethene [74-85-1] 1.00 U ug/L 1 1.00 3.00 OD28001 RSK-175 04/28/20 10:37 LTS Methane [74-82-8] 24.0 ug/L 1 0.450 1.00 OD28001 RSK-175 04/28/20 10:37 LTS FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 of 18 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW14 Lab Sample ID:CD05225-04 Received: 04/23/20 10:21 Matrix: Ground Water Sampled:04/22/20 08:28 Work Order: CD05225 Project: White Street LF-Phase II MNA Sampled By:Travis Martinez/Nicolas Tej Classical Chemistry Parameters ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Chloride [16887-00-6]^ 4000 J ug/L 1 2200 5000 OD24023 EPA 300.0 04/25/20 07:38 LII Nitrate as N [14797-55-8] 0.041 U mg/L 1 0.041 0.10 [CALC] EPA 353.2 04/29/20 11:59 JAH Nitrate/Nitrite as N^ 41 U ug/L 1 41 100 OD28032 EPA 353.2 04/29/20 11:59 JAH Nitrite as N [14797-65-0]^ 17 U ug/L 1 17 100 OD23037 EPA 353.2 04/23/20 14:47 JAH Sulfate as SO4 [14808-79-8]^ 3000 J ug/L 1 2900 5000 OD24023 EPA 300.0 04/25/20 07:38 LII Sulfide[18496-25-8]^ 10 U ug/L 1 10 100 OD27034 iM 450052 D-2011 04/27/20 18:01 JOC Total Alkalinity as CaCO3 [471-34-1]^ 14000 U ug/L 1 14000 15000 OD24028 EPA 310.2 04/24/20 13:34 JAH Volatile Fatty Acids by HPLC Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Acetic Acid [64-19-7] 180 U ug/L 1 180 200 OD29032 ✓olatile Fatty Acids 04/29/20 18:51 JFI Butyric Acid [107-92-6] 89 U ug/L 1 89 100 OD29032 ✓olatile Fatty Acids 04/29/20 18:51 JFI Hexanoic Acid [142-62-1] 260 U ug/L 1 260 500 OD29032 ✓olatile Fatty Acids 04/29/20 18:51 JFI iso-Hexanoic Acid [646-07-1] 440 U ug/L 1 440 500 OD29032 ✓olatile Fatty Acids 04/29/20 18:51 JFI iso-Pentanoic Acid [503-74-2] 180 U ug/L 1 180 200 OD29032 ✓olatile Fatty Acids 04/29/20 18:51 JFI Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 130 U ug/L 1 130 140 OD29032 ✓olatile Fatty Acids 04/29/20 18:51 JFI [50-21-5/594-61-6] Pentanoic Acid [109-52-4] 140 U ug/L 1 140 200 OD29032 ✓olatile Fatty Acids 04/29/20 18:51 JFI Propionic Acid [79-09-4] 65 U ug/L 1 65 100 OD29032 ✓olatile Fatty Acids 04/29/20 18:51 JFI Pyruvic Acid [127-17-3] 21 U ug/L 1 21 70 OD29032 ✓olatile Fatty Acids 04/29/20 18:51 JFI Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffy Notes Trimethylacetic acid 22000 1 20000 112 % 50-150 0D29032 Volatile Fatty Acid-, 04/29/2018:51 JFI Classical Chemistry Parameters ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Notes Total Organic Carbon^ 340 U ug/L 1 340 1000 OE06041 SM 5310B-2011 05/06/20 14:46 RSA Dissolved Gases by GC Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed By Notes Ethane [74-84-0] 1.00 U ug/L 1 1.00 2.00 OD28001 RSK-175 04/28/20 10:53 LTS Ethene [74-85-1] 1.00 U ug/L 1 1.00 3.00 OD28001 RSK-175 04/28/20 10:53 LTS Methane [74-82-8] 0.450 U ug/L 1 0.450 1.00 OD28001 RSK-175 04/28/20 10:53 LTS FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 of 18 (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch OD23O37 - NO PREP Blank (OD23037-BLK1) Prepared: 04/23/2020 13:23 Analyzed: 04/23/2020 14:32 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 17 U 100 ug/L LCS (OD23037-BS1) Prepared: 04/23/2020 13:23 Analyzed: 04/23/2020 15:01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 1.1 0.10 mg/L 1.00 109 90-110 Matrix Spike (OD23037-MS3) Prepared: 04/23/2020 13:23 Analyzed: 04/23/2020 14:34 Source: CD04294-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 950 100 ug/L 1000 17 U 95 90-110 Matrix Spike (OD23037-MS2) Prepared: 04/23/2020 13:23 Analyzed: 04/23/2020 14:37 Source: CD04294-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 980 100 ug/L 1000 21 96 90-110 Matrix Spike Dup (01323037-MS131) Prepared: 04/23/2020 13:23 Analyzed: 04/23/2020 14:35 Source: CD04294-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 960 100 ug/L 1000 17 U 96 90-110 0.5 10 Batch OD23O4O - NO PREP Blank (OD23040-BLK3) Prepared: 04/23/2020 14:24 Analyzed: 04/24/2020 02:42 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 2200 U 5000 ug/L Sulfate as SO4 2900 U 5000 ug/L LCS (OD23040-BS1) Prepared: 04/23/2020 14:24 Analyzed: 04/24/2020 03:00 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 50000 5000 ug/L 50000 100 90-110 Sulfate as SO4 49000 5000 ug/L 50000 98 90-110 Matrix Spike (OD23040-MS1) Prepared: 04/23/2020 14:24 Analyzed: 04/24/2020 04:11 Source: CD06140-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 210000 50000 ug/L 200000 28000 91 90-110 Sulfate as SO4 250000 50000 ug/L 200000 67000 92 90-110 Matrix Spike (OD23040-MS2) Prepared: 04/23/2020 14:24 Analyzed: 04/24/2020 05:04 Source: CD04204-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 410000 50000 ug/L 200000 210000 103 90-110 Sulfate as SO4 190000 50000 ug/L 200000 29000 U 95 90-110 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 10 Of 18 (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch OD23O4O - NO PREP - Continued Matrix Spike Dup (OD23040-MSDS) Prepared: 04/23/2020 14:24 Analyzed: 04/24/2020 04:28 Source: CD06140-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 210000 50000 ug/L 200000 28000 90 90-110 1 10 Sulfate as SO4 250000 50000 ug/L 200000 67000 91 90-110 1 10 Batch OD24O23 - NO PREP Blank (OD24023-BLK3) Prepared: 04/24/2020 11:16 Analyzed: 04/25/2020 00:34 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 2200 U 5000 ug/L Sulfate as SO4 2900 U 5000 ug/L LCS (OD24023-BS3) Prepared: 04/24/2020 11:16 Analyzed: 04/25/2020 00:52 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 51000 5000 ug/L 50000 101 90-110 Sulfate as SO4 49000 5000 ug/L 50000 98 90-110 Matrix Spike (OD24023-MS1) Prepared: 04/24/2020 11:16 Analyzed: 04/25/2020 02:02 Source: CD06140-01RE1 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 33000 5000 ug/L 20000 13000 97 90-110 Sulfate as SO4 88000 5000 ug/L 20000 67000 107 90-110 Matrix Spike (OD24023-MS2) Prepared: 04/24/2020 11:16 Analyzed: 04/25/2020 02:55 Source: C11304204-01RE1 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 240000 E 5000 ug/L 20000 220000 98 90-110 Sulfate as SO4 18000 5000 ug/L 20000 2900 U 92 90-110 Matrix Spike Dup (011324023-MS1131) Prepared: 04/24/2020 11:16 Analyzed: 04/25/2020 02:20 Source: CD06140-01RE1 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 34000 5000 ug/L 20000 13000 101 90-110 2 10 Sulfate as SO4 88000 5000 ug/L 20000 67000 109 90-110 0.5 10 Batch OD24O2B - NO PREP Blank (OD24028-BLK1) Prepared: 04/24/2020 11:29 Analyzed: 04/24/2020 13:29 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14000 U 15000 ug/L LCS (OD24028-BS1) Prepared: 04/24/2020 11:29 Analyzed: 04/24/2020 13:29 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 95 15 mg/L 100 95 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch OD24O2B - NO PREP - Continued Matrix Spike (OD24028-MS1) Prepared: 04/24/2020 11:29 Analyzed: 04/24/2020 13:31 Source: CD04435-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 1300000 150000 ug/L 400000 800000 115 80-120 Matrix Spike Dup (OD24028-MSD1) Prepared: 04/24/2020 11:29 Analyzed: 04/24/2020 13:31 Source: CD04435-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 1200000 150000 ug/L 400000 800000 108 80-120 2 25 Batch OD27O34 - NO PREP Blank (OD27034-BLK3) Prepared: 04/27/2020 17:41 Analyzed: 04/27/2020 18:01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 10 U 100 ug/L LCS (OD27034-BSI) Prepared: 04/27/2020 17:41 Analyzed: 04/27/2020 18:01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 0.37 0.10 mg/L 0.401 91 80-120 Duplicate (OD27034-DUPl) Prepared: 04/27/2020 17:41 Analyzed: 04/27/2020 18:01 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 10 U 100 ug/L 10 U 25 Matrix Spike (OD27034-MS3) Prepared: 04/27/2020 17:41 Analyzed: 04/27/2020 18:01 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 360 100 ug/L 401 10 U 89 80-120 Matrix Spike Dup (OD27034-MSD1) Prepared: 04/27/2020 17:41 Analyzed: 04/27/2020 18:01 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 360 100 ug/L 401 10 U 89 80-120 0.7 25 Batch OD28O32 - NO PREP Blank (OD28032-BLK3) Prepared: 04/28/2020 16:08 Analyzed: 04/29/2020 11:25 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 41 U 100 ug/L LCS (OD28032-BSI) Prepared: 04/28/2020 16:08 Analyzed: 04/29/2020 11:27 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 1.3 0.10 mg/L 1.25 101 90-110 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 Of 18 (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch OD28O32 - NO PREP - Continued Matrix Spike (OD28032-MS1) Prepared: 04/28/2020 16:08 Analyzed: 04/29/2020 11:30 Source: CD04204-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 1400 100 ug/L 521 880 106 90-110 Matrix Spike (OD28032-MS2) Prepared: 04/28/2020 16:08 Analyzed: 04/29/2020 11:36 Source: CD04204-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 580 100 ug/L 521 41 U 111 90-110 QM-07 Matrix Spike Dup (OD28032-MSD1) Prepared: 04/28/2020 16:08 Analyzed: 04/29/2020 11:32 Source: CD04204-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 1500 100 ug/L 521 880 110 90-110 1 10 Volatile Fatty Acids by HPLC - Quality Control Batch OD29O32 - NA Blank (OD29032-BLK3) Prepared: 04/29/2020 13:30 Analyzed: 04/29/2020 14:56 Analvte Result Flaq POL Units Acetic Acid 180 U 200 ug/L Butyric Acid 89 U 100 ug/L Hexanoic Acid 260 U 500 ug/L iso-Hexanoic Acid 440 U 500 ug/L iso-Pentanoic Acid 180 U 200 ug/L Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 130 U 140 ug/L Pentanoic Acid 140 U 200 ug/L Propionic Acid 65 U 100 ug/L Pyruvic Acid 21 U 70 ug/L Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes Trimethylacetic acid 19000 u9/L 20000 95 50-150 LCS (OD29032-BSI) Prepared: 04/29/2020 13:30 Analyzed: 04/29/2020 15:35 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Acetic Acid 17000 200 ug/L 20000 86 60-123 Butyric Acid 18000 100 ug/L 20000 90 54-133 Hexanoic Acid 22000 500 ug/L 20000 111 62-146 iso-Hexanoic Acid 20000 500 ug/L 20000 100 36-168 iso-Pentanoic Acid 19000 200 ug/L 20000 97 59-138 Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 34000 140 ug/L 40000 86 73-131 Pentanoic Acid 19000 200 ug/L 20000 93 63-131 Propionic Acid 18000 100 ug/L 20000 91 74-121 Pyruvic Acid 20000 70 ug/L 20000 102 44-137 Trimethylacetic acid 19000 u9/L 20000 95 50-150 LCS Dup (OD29032-BSD3) Prepared: 04/29/2020 13:30 Analyzed: 04/29/2020 16:15 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 of 18 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Fatty Acids by HPLC - Quality Control Batch OD29O32 - NA - Continued LCS Dup (OD29032-BSD3) Continued Prepared: 04/29/2020 13:30 Analyzed: 04/29/2020 16:15 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Acetic Acid 17000 200 ug/L 20000 83 60-123 3 25 Butyric Acid 16000 100 ug/L 20000 82 54-133 9 25 Hexanoic Acid 22000 500 ug/L 20000 112 62-146 1 25 iso-Hexanoic Acid 20000 500 ug/L 20000 101 36-168 1 25 iso-Pentanoic Acid 20000 200 ug/L 20000 100 59-138 3 25 Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 34000 140 ug/L 40000 84 73-131 1 25 Pentanoic Acid 19000 200 ug/L 20000 94 63-131 2 25 Propionic Acid 18000 100 ug/L 20000 91 74-121 0.08 25 Pyruvic Acid 19000 70 ug/L 20000 95 44-137 7 25 Trimethylacetic acid 20000 ug/L 20000 98 50-150 Classical Chemistry Parameters - Quality Control Batch OEO6O41 - NO PREP Blank (OE06041-BLKI) Prepared: 05/06/2020 11:34 Analyzed: 05/06/2020 14:06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 340 U 1000 ug/L LCS (OE06041-BSI) Prepared: 05/06/2020 11:34 Analyzed: 05/06/2020 14:06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 39000 1000 ug/L 40000 98 85-115 Matrix Spike (OE06041-MS3) Prepared: 05/06/2020 11:34 Analyzed: 05/06/2020 14:06 Source: AD02673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 43000 1000 ug/L 40000 4700 97 85-115 Matrix Spike Dup (OE06041-MSDI) Prepared: 05/06/2020 11:34 Analyzed: 05/06/2020 14:06 Source: AD02673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 47000 1000 ug/L 40000 4700 107 85-115 9 21 Dissolved Gases by GC - Quality Control Batch OD28OO1 - Same Blank (OD28001-BLK3) Prepared: 04/28/2020 07:33 Analyzed: 04/28/2020 08:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ethane 1.00 U 2.00 ug/L Ethene 1.00 U 3.00 ug/L Methane 0.450 U 1.00 ug/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 Of 18 QUALITY CONTROL DATA Dissolved Gases by GC - Quality Control Batch OD28OO1 - Same - Continued (� �Eo www.encolabs.com LCS (OD28001-BSI) Prepared: 04/28/2020 07:33 Analyzed: 04/28/2020 08:57 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ethane 290 2.00 ug/L 323 90 80-120 Ethene 280 3.00 ug/L 302 93 80-120 Methane 149 1.00 ug/L 172 87 80-120 LCS Dup (OD28001-BSD1) Prepared: 04/28/2020 07:33 Analyzed: 04/28/2020 09:13 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ethane 325 2.00 ug/L 323 101 80-120 11 25 Ethene 302 3.00 ug/L 302 100 80-120 8 25 Methane 169 1.00 ug/L 172 99 80-120 13 25 Duplicate (OD28001-DUPl) Prepared: 04/28/2020 07:33 Analyzed: 04/28/2020 10:05 Source: CDO5225-01 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits RPD Ethane 1.00 U 2.00 ug/L 1.00 U Ethene 1.00 U 3.00 ug/L 1.00 U Methane 20.2 1.00 ug/L 16.6 20 RPD Limit Notes 25 25 25 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 15 of 18 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 16 of 18 r a u n U, m m �6 }ss f b -C C � N m. w m � � a o } c 3 m N y� I Q r� 3 m e ro m a m a m 1 ° � N � �c c •c CO •c 5 m m 7 1 ✓ I� V v a m m m m m � m a C m n CO m a 1 a n .o n CD � m w U n m v r o o C 3 ( 3 C n � � n Co e a C �. g m �', 2 m n a P CD # N CD O O C 01 Dcc rO =_b -7 CO > -� a @ :3 C a V+} Z �. , v C � _ j m c O •-C n N Y h CO po0J V J pq N ar 1� 4] W S O n, o, A N ro o N S 3° LZf n O - a ° Cr m 3 CD 3 a CD �' y to p 3 a 'CD�-•+ m � Q c� r • r H 6 ro CD N J r m N � N j p a +p 1ppe m o m m N n x x x Akallnity31t7.2,Chlorfde 3W,Nftrite as N o J 363-2 v x x x Fatty Acids x x x x NOX 353.2 v 3 ro n 2 Z e n x x X RSK175 m iv o m w N x x x x Sulfate 300 m L1 p o x x x side sM4Soas o 3 m x x x TOC SM5310B w r z L v 0 CD ` y m o /` CDcb Q o r v S _ IT 4 , , 4n C�5 '� CDCD �. ww COD :3 CD CU V 1Cn CL Page�17 of 18 Sample Preservation Verification ENCO Cary Work Order: CD05225 Project: White Street LF-Phase II MNA Client: Golder Associates, Inc. (GO007) Project#: 1668421.107 Logged In: 23-Apr-20 11:03 { Logged By: John C King / Preservation Check Performed By, Date/Time: �LZF_• 2 D / CDO5225-01 Cont Type Y Pres (PH) Requirement pH Checked/ In Control jDateMme pH Adjusted Adiusted Reagent Used/Comments E 250mLP+H2SO4 <2 / N 1 NA Y I( I NA F 250mLP+ZnAc+NaOH >9 Y I N I NA Y I / NA C DO5225-02 Cont Type YP Pres (pH) Requirement pH Checked 1 In Control DateMme pH Adjusted Adiusted Reagent Used/Comments E 250mLP+H2SO4 <2 N / NA Y / ' ! NA F 250mLP+ZnAc+NaOH >9 Yf! N / NA Y 1 �l NA C D05225-03 Gant T Type Pres (pH) Requirement pH Checked l In Control DateMme PH Adjusted Adjusted Reagent Used/Comments E 250mLP+H2SO4 <2 YII N / NA - Y I / NA F 250mLP+ZnAc+NaOH >9 L1 N I NA Y/ NA CDO5225-04 Cant Type Yp Pres (pH) Requirement pH Checked / In Control DateMme PH Adjusted Adiusted Reagent Used/Comments E 250mLP+H2SO4 <2 'Y ! N / NA Y 1 ! NA F 250mLP+ZnAc+NaOH >9 / N / NA Y / iV1 NA Rea ent Name ID 1 2 pH Strip ID: Rea ent Name ID 3 4 Rea ent Name ID 5 6 Page 18 of 18 C:1ELM NTIPrintlwko_PreservationCheck. rpt GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: White Street Landfill — Phase II MNA Project Reference Number: 19131339.101 Sampling Event Date: April 20-23, 2020 Review Date: June 8, 2020 Report #: CD05225 J GOLDEP Initials: NTT Initials:,2-2,0'" Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain -of -custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: Region III Modifications to Functional Guidelines for Organic Data Review Multi -Media, Mufti -Concentration, September 1994, Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility/C & D List NC Appendix NC Appendix I + Detects NC Appendix II NC Subtitle D Leachate List Other: NC MNA parameters 1.0 CHAIN OF CUSTODY (COC) REVIEW NTT COC was properly signed by all parties. NTT Correct project name and number are on the form. incorrected project number on COC. Should be 19131339.101 NTT Sample receipt condition at laboratory was acceptable. NTT Each sample and blank submitted for analysis appears in the report. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL 4LABORATORY DATA REVIEW G 0 L D E R Page 2of3 2.0 SAMPLE HOLDING TIMES NTT Molding times for extraction and/or analysis were met for each analytical Method (see below for reference). Review Criteria Method Anal tes Holding Time SW-846 Method 8260 and 8011 vOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-646 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-B46 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 C anide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW NTT Laboratory analyzed at least one internal blank for each method, where applicable. NTT Laboratory blank is interference -free. NTT Surrogate recoveries are provided for each analytical method, where applicable. NTT Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). NTT MS/MSD/I*CS data results are provided for each analytical method. NTT MS/MSDILCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). F QM-07 was appended to the MS2 sample because the spike recovery was outside acceptable limits for the MS and/or MSD. The batch was acceptaed based on acceptable lower control spike recovery. 4.0 ANALYTE LISTS/METHODS NTT The proper number of constituents are present for each analyte list as identified above (including detects where applicable). NTT Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING NTT All analytical reporting associated with the event was performed by the contracted lab NTT Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been 'flagged' with a '13' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 10X far commonly detected laboratory GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW G 0 L D E R Page 3 of 3 *> contaminants -acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. NTT It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. Chloride, Sulfate (100x) at II-1 Total Alkalinity (70X) at 11-1 Chloride and Sulfate (10X) at II-9, SMW-3 Total Alkalinity (5X) at II-9, SMW-3 NTT The report provides the reporting limit for each constituent. NTT The results were reported at or below their proper reporting limits (e.g., MDLs), Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. NTT No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Interim Maximum Allowable Concentrations (IMACs) in wells or field/equipment/trip blanks or above applicable Surface Water Standards for surface water points. Chloride (NC 2L = 250 mg1L) • II-1 @ 570 mg/L NTT No quantifiable inorganic or organic constituents were detected in a well or surface water point at concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). NTT Other report issues/Communications with laboratoryletc.: APPENDIX C EPA Natural Attenuation Screening Protocol Forms and BIOCHLOR Monitored Natural Attenuation Analysis for April 2020 Sampling Event Natural Attenuation Interpretation Score Screening uegixte -dence W snerenic aodeorna t-' w chlermatec erp.nim G 10 5 n r a rndrn a ru a aerooc OiodegradWf ' d r•.Wl ted.0o 6 iv 14 Protocol score; 12 .memnr.,m.nce+or aren�c b��0.•ya�Iior''m rr-Inrnerc¢ay.nics 1510 21) .20 Serolf to Ent of cable Concantrafinn to Points Ana"4a mostCOrram done lraerpnstalian lcs t❑ Awarded C�tyg"M <.1, rrg1L TDkra[ed sula: eaFeS tna rr iwwe patrway at nigher Q c�ncerRratwrs 5rrgiL Not tolerated. tfoweVer VC may to okid¢ed aercena;lly Q 91(we- c1 rngL Al higher concertratlons may car)ioere wth F@"Iwe 0 Q Path-Y iron II' �l ngA_ Reduclire pal" poeslble. VC may be oxicliietl 0-6- 0 Fe(III) -relic r nditm Sulfate' -20 mg11 At hlghef concertralior>S may compete with red,mve pa4 SWrlde• a1 -3L peoucWe patio Ay possible O 0 Melhene' -0 5 MUIL u@Inmate redudlwe dawtitter pbdL6t, VC Amtarwlalft ❑ Oxldallon ?50 mNlvolts Imy) Reductrre palhway poeaible 1 Retluctlon Puertlal' (CRP) • 1 Wn1V Reduolve Dalirway likely D pl-I' 5 e pFf i 9 Prkimal rarge Fw red4Ctive rmlMYay 0 TCc. 72D rVA- Carbon and energy source. drives declllOflnation, can be nallral or arwopoger Tempwahre• 5'2fl'f; At T ZD C ui inheMICal afccess s arcelareled Carbon DKatde -2k cacagrm ru Ultimata m Eiative cauglltor prodnLT o � _ AlkalirAy +'N Ql,krowld lmNr5 rra IrgLrWIon ol cdrQonall9llbp WARacILWer ® 0 1 minaralB Chloride• �24 backgraund Daughter proom of orgaryo oilortw tiydroglw �1 tim Redkrlr a tia>trvray pmsible. Vc may aMLIM llele Q 0 Vo We Fatty Aida �D i moll- rrrtemiediales mauting From biodegradation of aronmat - _ compounds. eel bon and energy soul ce 2TEXI �D l rmelL Carhan and ercray source, drNea gevfNarlrnhan 4* ❑ ME" Malerlal released 0 !] TCE' prQ*JUI dl ME r 0 JR 0 ME' Daughter proaeci or TCL IF 06 ra greater Inen RZIt of lolal DCE it r6 likely a daughter 0 } prod=of TCE" 1.4,DCE can be a them reaction product of TCA VC' 6arlgMer prvCW dF dCE r 1.1 1- malenpl rel"Sw t}i f. Tricygoroetiehe• 00A Oa.1gnte+ pcoddd! of TCA wdo md�ug MxWlnw - Carbon Malenal releasw 0 D TdVaohbrde Chloroetharre' Daughter pommi or DCA or VC order redo ng COridilu 0 D Etferle/EUOry sp 03 rgWL 6augMef prm = of Vcdethene p O ❑ ,D.T rrKyL Dnugmer prodLira of VDetnene G 4 Chlomrmm Daughter prOdret 0f Carbon TatmenlorrJe G 0 D c;n-brornerhane Cerlghter pmoxt of cni=form Q ❑ eniilh— a' A,ienu+worded rrly iris mn b-11-11 rLel the a mpnunJ is+ d—hif r pr edud li e, nrl o rmufilvoir nr{Le .um ie 4AnIi DATE: 06/22/2020 SCdRE R—t Project #: 19131339 Title: IISCREENING G O L D E R Prepared By: NTT Aprilil 2020020 MNA Evaluation White Street Landfill, Permit No. 41-03 Reviewed By: DYR Appendi X C-1 Natural Attenuation tnterprMittan smm. Inadvwarrrod-m1�aaae.wi,b�W, radallw'dd4wneiedQuamz 0105 Screening sev,d--for--b,blo6gradativn•dchlo6nete4erparncs 6to13 Protocol Scott: 12 r"• .•�^ �': :. -_ -M. AdewNe ay, + cc fm anea abla b+udepadellon' oT chlonna Intl upon— 151020 slia.v —dense ivr anaarrbtc b1edcpr.Q11W Of chrwlnile6 o.9enres -20 Sdbil ro End of Twe Concentration in Paints Ana"Is MostCi"arn Zone Interpretation Yea No Awarded 6.ygan• ae 5 Mg L Tdarated, euppressea the redLe, ive pal rhvay at higher �; Q �Ar1Cerltra[IdrS 5m & Not tolerated, however. VC may Ce dk.tllzed aetoblcaPy - .. n Witrale s1 mQx At higher r Aerlratiom may compete wfth reAuefva p5thway Iron rl' �1 myrL Reduo1rve paltway po lble, VC may to omdlaed hider 0 ,� D Fe¢il rn LICI condnibre Stdrate' 40 rral- At higher ooncentratlors- may compete wdh reds-=ve 4 pathway Sdfltle' �1 OVL Reductive patrruray pxmtble O Methane' �0 5 nVL Ultlmate redwOve daughter prodrtt. VC AncunureGaa O ❑xrdalion '50 m+lrvalts (rTIV) Reductive Ire[hway possible 17 [r Reduction Pdlertlal' IORP) c-100mv Reduetn'e psahway lowly D FH. 5 t PH t g Optimal rarige for redichve partway (a � TOC 120 nglL Ca tan and energy source, drkes dechlonnanon. ran be " t� nabxal of arthropogenv_• Temperatlee' 20"C At T >^10`1 C bucherrrlwl process a aooelerabact • Carbon DuuxldE a2x. bacxgrourld Ultimate muoative dai-pyber product - AIBa&nity �Dr bacugrourd Resorts from interaction of carbon doxida with aquiter _ mine+als -- CN0171de' nyr pachgrourb Daughler pro6x;t of organo chlorine ii G Hydrogen M nM Re&ctw pa[P-way poaslble. VC may accurnuale Volatlle Fairy AacAE, =0.1 matt- kmermedlates resulting from bocfegradation of wornatla (I cnrrlpunds. carbon and energy wumv HTEk' a0 1 rrga- Carbon and energy source; dunes dec hlorinawn O rk `.i ME' Material relaasad O D ,. T>(M• Daughler product of PCE "' ❑ 4 t7 DCEe Daughte r prouixt of TCE If els is grwler then SP% of Iota[ DCE It I5 likely a daughter ❑ Fvraduct or TCE" 1.1-DCE can be a chern reaction product of TCA Vc• Daughter pradtnt of ICE* o O O 1 1.1- Material released _ 1] Tndioroethane' V QCA Daughter prod:.ct of TCA Eder mot ctng cor%ldwns Q 2 Carbon Material released O 4�@ D TelrachlbrHle CYtprpethar!' Da ghter proidk,& of [CA or VC urder redurirg condition 11 Etr�rlelEllnrw ap Ell ngll Daughter prodret of VClelhens it �D 1 FTVL Daughter prodret 01 VCIeltler* O (f tl CN—Form Daughter prornrt of Carotin Tetrarhm—de fl � n gicnloromelhane Daugghter product of Colpfpfprm ❑ D 'rlynirzd a]fekY�� ar I°nirtys aw ardent nldy Ifir con i.r 311owd that rho n rr punud 1. • d6wp IiW prvrluvt SC'V 1411 Rix I 0.6.. 11 or a 9drldll uCll t dt-the Smfd NAf'4r DATE:O6/22/2O2O Title: II-9 MNA SCREENING Appendi Project #: 19131339 G L D E R April 2020 MNA Evaluation X Prepared By: NTT White Street Landfill, Permit No. 41-03 C-2 Reviewed By: DYR Natural Attenuation Interpretation Score Ina dewal[awdrnmT&- .mn L W-idcp e6alnr+' • I c i,im -ated a 98pus 0 to 5 Screening Protocol Unnited rMenoe To anaerobe MnSOptadalianI of 0danneled wp m-cs 5 to 14 S Ct1 IC: 12 .. .. .. _. ndequnteevidencerorenavowchrotlegredglwn'ofchlonneteddg3n1c 15102❑ Srtwo rntmnce rm rnave*Oc Mcdcam aaor r or drMlnalyd a packs 720 Scroll to End of Table Concentration in t'6IM Analysis Most Cortaro Zane Interpretation Ym No 1[H9rded Oxygen' �0 5 mglL Tolefaled, sum, resses tree reductive patrwray at ng ner ® Q 3 cordentratioris ❑ Sri glL Not tolerate: however. VC may be m WizW aerobically 4 Nltfaie• C1 nv L At ngher conceraratrors may campeie with mduohve 0 2 patt-ay Iron II• a1 mgfL Redlwirve pstrway possible. VC may be oxidized under Q F2(l I )-(ed,AcTp mndltlorts Swats- Qo mgfL At higher concwlratxhls may ❑onVel a wrtn reductive Q � a pathway Sulllde• �1 mcfL Reductive pathway possibe 0 ❑ Methane, '0.5 FVL Ultimate reductive daughter proWrcl, VG Ar:curllc"ea a 0 oxida[ian -50 millivoitS Imvj Reducktve pathway possible D 9 Redxhon %icrtral•(ORP) r-9owv Reductive pathway likely 0 0 0 5 e PH = 9 Optimal range for reductive path Asy r-) 0 TOC 7x rnglL Carbon and energy snuroe: drives dzchlt rm0on, can he C U Ilaturat or arthropogsnic Ten"Wkoe' 1i�°C At T �2VC dwdhemlcal process G adoeiarahed a 0 CO) Carbon Dllomde background Ultimate oxidative daugNer product 0 7 Alkalinity mat background Results from iMeraction of carte lox -de with aqulfer C1 1 111lnera� Cnloartla' 3Zx backgrauntl Daughter product of organic ettdnne Hydrogen �1 nM Reduclwe pathway possibW. VC may accumulate d 0 VoWde Fatty Acids -0.1 nVL Irrtermediates resJ[rlg from htooegradatiort of aromatic ❑ 0 compolxds: carbon and energy Source UTEX, --0.1 mglL Carbon and energy source droves ds.c ronnahon 0 0 0 PCE' Material released ❑ .. TCE• Daughter Product Of PCE • DCE• Daughter pmduet of TCE K o$ is gr8ater 1hx3» 80%4 Of Total DGE it IS IMely a ddugnler L; t_.• _ product of TCE" 1 1-DCE can be a Chem. reeclion Vcduct or TCA VC, Deugmw product of OCE, 1,1 1- Material released L Trichloraethrane- DCA Dat grater product of TCA -nder reducing oor-dibom G r _. CRrbort Material released ❑ Tetrachloride chloroethae Daughter product of DCA or VC unrJer reducJng cordl[Iors 0 O 0 EtrenelEthare �0.01 mg1L Daugriter product or VCletheile 0 >0 1 mUlt- Dail" priad , t -if VC/eth the u Chloroform Datigilter product of Carbon Tetrachloride Q 4 Dichlorometharle Daughter product of Chloroform 0 0 •ngnrrcd arlrtlycia Ir VW is Wnrdcd rm ly Ifit on he mhr nrhar the nun gnu na I,a Jimighl cr prndu0 SCORE kin •,c•I h-e, oar A WniT[Illcnf .. l I 1163Q&l NAt'r.l DATE:06/22/2020 Title: SMW-3 MNA SCREENING Appendi Project #: 19131339 G 0 L D E R April 2020 MNA Evaluation X Prepared By: NTT White Street Landfill, Permit No. 41-03 C-3 Reviewed By: DYR BIOCHLOR Natural Attenuation Decision Support System TYPE OF CHLORINATED SOLVENT. Ethenes 8 Etharies p 1. ADVECTION Seepage Velocity' w 268.7 (ldyr) or Hydraulic Conductivity K 2.6E-04 (cmisec) Hydraulic Gradient i 0.0199 (Wft) Effective Porosity n 0.02 0 _ 2. DISPERSION Alpha x' 47.5 {ft} Calc. Alpha x (Alpha y)1 (Alpha x)' 0.1 (-} (Alpha 2) 1 (Alpha x)" 1 .E 99 (-} 3. ADSORPTIONS Retardation Factor' R or Soil Bulk Density, rho 1.7 (k91L) on. foc FractionOrganicCarb Partition Coefficient Koc �J POE 426 (Ukg) 4.62 I-) TCE 130 (Ukg) 2.11 H DCE 125 (Llkg) 205 0 VC 30 (Ukg) 125 {-) ETH 3D2 (Llkg) 3.57 H Common R ( used in model)` 2.11 $. 810TRANSFORMATION -1 st order Decay Coefficient• Zone 1 <=L__:::> k (llyr) hall -life (yrs) Yield PCE TCE 0.990 I F 0.70 079 TCE DCE 0.900 F 0,77 0.74 DCE VC 1.733 4 4Q 064 VCETH2.567 0,27 045 Zone 2 �1 7. (1lyr) half - life {yrs} - T �_ TCE 0.000 TCE DCE 0.000 � wEt.r DCE - VC 0.000 VC ETH v,onv F version 2.2 Excel'97 White St LF Phase it Rin Name 5. GENERAL Simulation Time' 30 (yr) ~ L Modeled Area Width" {PryyNModeled Area Length'{fi} wo Zone 1 Length" {ft} Zane 2 Length' 0 (Pr) Znne 2= L -Zone 1 0. SOURCE DATA TYPE-- Continuous Source Options Single planar Source Thickness in Sat, Zone' 0{tt} Y7 Width' (ft) 4✓J0 x$ cant. (mg1L)' C1 {11yr) PCE .02 0 TCE 02 a DCE .029 0 VC 012 0 EfH 00015 a 7. FIELD DATA FOR COMPARISON PCE Cdnc: {mglQ ❑ 0 TCE Ccnc. (mc,31L) .❑ .0 DC= Conc. (rnyL) 009 .0 VC Colic. (mVL) 0.0 .0 ETH Coax- (mglL) 0.0 .0 &stance from Sourre (Ir) r 75 350 Date Data Collected 1 20217 8. CHOOSE TYPE OF OUTPUT TO SEE: RUN CENTERLINE 14 RUN ARRAY Data Input Instructions: 115 1. Enter value directlyi._..or t or 2. Calculate by filling in gray 0_M cells. Press Eater, then �. (To restore formulas, hit "Fiestore fvrmula5' button ) Variable` Data used directly In model. Test if Blutransformation Natural Attenuation Is Occurring __* Screening Protocol Vertical Plane Source: Determine Source Well LOcatien and Input SOlvent Cancentrations View of Plume Loakigq Down Observed Cent eriine Conc at Mc nit oring Wells Help 04- Restoreiw t Formulas SEE OUTPUT Paste Example L1L45GLV£D CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUMB CENTERLINE ImyL} Rr Z-0 PCE MPndmirrg VW u L—fl— IR} Fnld Dara from SiN 60CD �Yh rapwiur.�apYran �•ap�rnaY�+s Lxerr [bqY r 1.,.� [xra n..m� 1000 - s.e PCE E Sra TCE F Ulm - - 9e OCE D01O— si +m 1ar1 7m zso nyq Sex VG Ci q OD1 ---ETN DIslama, R— Sourer (tQ TFNr Prepare Mlmelion Dv n r.vs P.wm w 1b AR Ty Array Lap ' !! DISSOLVED CHL AiNATED SOLVENT CONCENTRATIONS ALONG PLUME GENTER4.I14E(mryt]a12.0 DFslFa50e IrorA aaarre (R( TCE No oayr.a.l Tea - nDn - 3 er%wid.,P*W 0O 0019 ❑0,9 D018 Do,- 0016 3011 Dal' DO+_ L•J•, MnrwewFnytNrR Loprinrr Inl'. ns s® FlN! yrtr FFAnraRF D OM 0 DOD �LDapMbJRmem �anml let Cedr OcYv • FrU O.ti lma.9V 1 OJO ae. PCE S—ME ADD DmD o On 100 tan 7p1 Van wa A70 +6D asp saeve V awl See LTN DisvlF F[om Iwm- Iti j TM+P 30.0 Y+'+ra RHum M Pr.pare Animalivn Inpu! ialJI To ArFry Lay r rivavivcra �n��nnw. r a a,uv Fn r +.,,m.en i v, n�rt, ,u�rara ry ��n F ��n � �rs�ane rmp'�I n tie DCE u 0 go ,W T 1B0 I "m I -ho -m 320 3m 1 4W M-ftwny Wall W.W.- {ny n arD FIeId Dal�lmm Nw C UU9 Y 4en �pD.�dKLrRhaMNwi �SYra,[nPr iPFS+rF L>•aY • Fe JPrp MemBb E BM TCE p+w norD - `4m «e333 n � 1m ,x sm zse aDD ,xa eee vc Distance From Source (K( Tuv: T00 ena Prepare Mlmeyen TeAtl Ty Artry DISSOLVED CHLORINATEp SOLVENT CONCWMAnONS ALANO PLUME CENTERLINE (AgrLj Mina �nDeperteevniPYoe,aon �.a +at Jun brat a 1r1e �mErvn 9O 1XD- Fee POE E 3.a ICE --- b- ` Dc•,•., 400 € - +00 ISo Zm u nup+ sew ET11 Dl stance From source 1m) Ti. sa �, rers �mla Pnpan MIFFR1ipn !�! Te NI Tv nrray I caf �yr,[gr DISSOLVED CHLORINATED SOLVENT CONCENTPATIDNS ALONG PLUME CENTERLINE Ua �ea.m�M+m�a—s-w�ane.rmvrw oar r Pw�oL.emra i DDD - sa.rcE Se. TCE s etyD- y 9w DOE Dom +x2m :m 3oa ra 6& }Ys—MM f18 CBa !fB BB! 400 DIOAmo FFW SUUCCU (t1.3 nme: PF —Ani coati- Rxumle to uI Tv Inver BiCCHLCR Natural Attenuation Decision Support System TYPE OF CHLORINATED SOLVENT 1. ADVECTIDN Seepage Velocity" or Hydraulic Conductivity Hydraulic Gradient Effective Porosity 2. DISPERSION Alpha x' (Alpha y) / (Alpha x)' (Alpha z) 1 (Alpha x)' Ltnenes Etharies Vs 2fi8 i K 2 6E-04 i U 0199 i 1 0.02 K47-5 (ft) C23c. 01 (-) l Alpha x S. ADSORPTION Retardation Factor' R. or Soil Bulk Density, rho 1.7 (kW(-) FractionOrganioCarbon, fac Partition Coefficient Koc -A PCE 426 (Ukg) 462 H TOE 130 (Llkg) 2.11 (-) DCE 125 ((Jkg) 205 (-) VC 30 (LJkg) 1.25 (-} ETH 3D2 (Ukg) 3.57 i } Corrirrion R(used In nwde-I}' = _122.11 4. SIOTRANSFORMATION Zone 1 PCE TCE TCE DCE OCE —' VC VC —. ETH Zot19 2 F _ . TCE TCE _ DOE DCE VC VC ETH .1 St Order Decay Coefficient• A (1W) half-iife Cyr&) Yield 0 990 �r 0.70 0.79 0.800 F 0 _i7 0.74 1.733 040 4.$4 2.587 0.27 045 h (11yr) half -lire (yrs) 0 000 0000 � HELA 0 000 0 000 Varsicn 2.2 Excel ' 07 & GENERAL Simulation Time' Modeled Area Width" Modeled Area Length' Zone 1 Length* Zone 2 Length" White St LF Phase II Mn Neme 3Q (yr) 50Q (ft} 4L W 4oQ (ft) j 4QQ {fty 0 (ft} zone 2= L -Zone 1 t3 SOURCE DATA TYPE Continuous Single Planar Source Options Source Thickness in Sat. Zone' 25 (Q) Y1 Width' (ft) 400 Cono. (mg/ L)' C1 (1/yr) PCE .02 0 TCE .02 ❑ DCE .029 0 VC .012 0 ETH 0.0015 0 7. FIELD DATA FOR COMPARISON PCE Comic (mg/L) TCE Conc. (ntgfi_) I DCE Conc. (rrgAL VC Cox. (mg/L) ETH Conc- (mglL) Distan:e Frnm SGUIre irt) 9at a Data Collect ed Data Input Instructions: 115 1 Enter Value directly.... or T of 2. Calculate by Filling in gray 0.02 cells. Press Enter, then C (To restore formulas. nit "Restore Formulas' qutton Variable' data used directly in model aiotransformation Natural Attenuation is Occurring Screening Protocol Vertical Plane Source: Determne Source Well Location and Input Solvent Concentrations View of Plume Looking Down Observed Centerline Cone. at Monitoring Wells 8. CHOOSE TYPE OF OUTPUT TO SEE — Help i RESET �Formulas RUN CENTERLINE RUN ARRAY paste SEE OUTPUT Example DOMLVEID CRWMNATED SIX.VEtTF CONCENT TONS ALONG PLUME CENTEF LINE fmg&) at 7-0 .rRepq�.nerw[erm. +. ^._.unr . cw>bn'_-sr E e.TCE ❑ +Op Q e S.. OCE i A00 u1 V � Im iy 3[9 250 yu Eec+fC Olslance From Source [h.} Tlrrt Preyyle Animr[len ® 1�Inu� Te All T. AnM y r PrSSPLVED Osr"WATM WLVENT CDRLW +AT1O115 ALONG PLUME CENTER4 NE ImWW M qo 1W0 � Se[ PCE ee. SCE n +oo S.. OCE ] SDO ao im iw av au aoo aso am .an se. vc u° n t+m °ei Enl Grslance Bran s��rce 111.1 r�..r PrpAre AnlmMlo © Am b ToAll T.M.V D4 LVPD C44LOWNATM 3MVENTC NOEN RTIONBA NG PLUME CENTERLINE l,4L].1 bd om,a—e from Source [Rf �+AtLqua.p+Paeerxn 1MOHI.O.n1 • fs tlWbmN 10aV - SM PCE S.[tGf n +9F ADD S. OCE E u nnla Dlslan" From source 1D-1 Prepal[ Animeliai+ RMwnlae Te All Te Arr.y 00155MVM CHLORINATED SOLVENT CONOW RAnO}[S ALONG PLANE CENTERLNE WwLl a17JD Darluaee Rem Source 1 e1 VC No hp..blN Nem[erinp YiNl beetles L![J 100 9� rem Deb few. o000 ovoa l.. TLE a +rn 9r[ ocE c nma aoo n m cn oo sm Okta Prnm Sourer M.i P.epan Mirv[im© Imo[° ToY To.my DISSOLVED CHLORINATED SOLVENT CONCFNTRAMMS ALONG PLUME CENTERLJ HE PngfLj a1 Z U Gis1.rl.A from EeureR 1R1 EFN n m aT aoo i� mo -xu am sm om+ Pmi om+ Eml .. + uu s[. TCE S.. OCE S Ne Ace OlMonte FI Seumc 10.1 Tnn: o en RePAre MMlftlen R p S, .ir T.Al, BIOCHLOR Natural Attenuation Decision Support System TYPE OF CHLORINATED SCLVENT 1. ADVECTION Seepage Velocity, or Hydraulic Conductivity Hydraulic Gradient Effective Porosity 2. DISPERSION Alpha x' (Alpha y)1(Alpha x)" (Alpha z) ! (Alpha x)' Ethenes Etharles ❑ Vs 266.7 (tvyr) K 2. SE-04 (cwsec) 0.019D WtIl n 0.02 f 3 (ft) calc. Alpha x 3. ADSORPTION Retardation Factor' R or Soil Bulk [Density, rho 1-7 (kglL) FrarbonGrganicCarbon, foc Partition Coefficient Koc -A PCE 426 (Lncg) 4 62 (-} TCE 130 (tlkg) 2.11 (-} CCE 125 (Llkg) 206 (-) VC 30 (Ukg) 125 H ETH 302 (Llkg) 3.57 [-} Common R ( used in model)` = 2.11 4. BIOTRANSFORMTATION-1stOrder Decay Coefficient' Zone t h 0lyr] half-life (yrs) Yeld FCE= TCE 0.9g6 I f— 0.70 0-72 TCE DCE 0.900 F 0.77 0.74 DCE - - VC 1 733 0.40 0.04 VC ETH 2.567 0.27 0.45 Zone 2 <zi:� l (11yr) half-life (yrs) POE TCE 0.000 TCE DCE o.00a f r:t�P [� VC o.000 VG ETH 0.000 version 2. 2 Excel '97 White St LF Phase 11 %n Name .6. GENERAL Simulation Time" (yr) ' L _ Modeled Area Wictth' (ft) 4 W Modeled Area Length' M (ft) j :Zone 1 Length` (ft) 'Zone 2 Length' {{{} Zone 2= L - Zone 1 IL SOURCE DATA TYPE: Cant inuous Single Planar Source Options Source Thickness in Sat Zone` 25 (ft) Data Input Instructions: 115 1. Enter value directly.... or fi or 2 Calculate by filling in gray 0-W cells. Press Enter, then C (To rest OF a fo r mu lels, hit "Rest are Formulas" putt on ) Variable' Data used directly in model - Natural Attenuation Screening Protocof Vertical Plane Source, Determine Source Well Location and Input Solvent Concentrations Y1 Width" (ft) 900 K.- Qno. (mg/L}' C1 (llyr) --- PCE .02 0 TCE .02 D View of Plume Looking C]own DCE .029 0 VC .012 0 Observed Centerline Cono. at Monitoring Wells ETH 0.0015 0 7. FIELD DATA FOR COMPARISON PCE Can' (mgrLj TCE Cana. (mwl-) DCE Conc. (mg/-) C IVC Conc. (mg/L) C IETH Conc- (mWL) C IDistance frtrm Source (ft) 2 CHOOSE TYPE OF OUTPUT TO SEE: RUN CENTERLINE Restore RESET Help Restore RUN ARRAY Paste weOUTnT � Example OISS9LVED CNL,DP1NATF9 $IXVFNT wNCFNlMAlW4S ALONG PLUME CSNTEIiLJNF (mg[Lj At p0 Distance Rmn S.— Oil PCE ---WDym..^^P,^ace^^—�.a,nw�I lq Pdw D.�.r • FMMGYtfmi Al. , am - 3ee PCE Sw WE 0 1❑0 Ye See DCE = BBB ao1D ! sus see vc u I a cn+ � see Erie Distance From Source (11.1 r Prepare Anirr H-. SO Ta AR ro Aray DISSOLVED CHLVRINATM SOLVENT ❑OWPA RATIONS ALONo PLUME CENTERLINE (nigh e17r0 01.14gee FMM Seuree;R) TCE u eo ,op aM 25t, wif 3:io ADO I ALo I etld 0.C.ar•dmi )a _ _ _ _ _ _ _ _ atrA nultr BYaomfm 00m I D019 1 00,5 0.0,7 •i0% aat- .01r u,_ P01, 0.mu I a Ak•BerNg WHI LrlA.dem• tnl xao Fbu mlalrnm p11. a ddD a dod �wr0.pramwrv�moxwn--=—,�X 1X Tar [scar • Fwf OFb AanRe. ,wo Se. PCE S•a TCE D,DO - eeaOCE 6B0 ❑n1n � 0 +Du _i� aw k_ Soo pw s.evc u awl Sea ETII Distance from Source fll-i Prcparc Anlm¢Upn TMr•c { Rewm Tp ahH Te Arm � InputIo OiK-4 rrala DICE Ilo Man. nrlrg W nH Loam— (n} F41d Data rrwn s tv ii l,J+ I O O,D Lei+DWndmrMu[• - —5...... M, I ow - Sw Par F Sae WE 0 pNo Sao s«DCE nmD im wn r' cm sce vc V a 001 s« Em Distance From Source 10.I TMe av v crass Prnpare Fnlrnalion Lap ��ryer DISSOLVED Dim— f— RXum le To All T. Ar" Inprn ALONG PLUME CENTERLINE rm6'L5a17FO VC 0 Sa 100 ,rA 2]G ZO 9pp DiG -000 850 500 oeg—l" i01+ u0i: D01 DOT_ uO? 00*= •]Li_ Nnammafemmtbn Oo+A O.ol+ GA+, DASD 009 Duce I :wT v.ax 0.006 D.O76 tlCM m +gyp Wrld O.la tram 0.000 C.OaD —tbumssl p,Pr m, +••.91pyaNW lX CiaN bray • E,rq ha, i,arn:4a t pdf T pm E ] TCf O $M $w OCf ` 001e cim :PT SOn fW ai•. VC u ow, S.. Efll Ovaance Prom Source {n,l Tory: Prep.re Mirrrelron RXum le T." Inpul T. Al by •_aJ'�nea� DISSOLVED CHWRINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mWij M Z-0 0Ia1.— rrpm S—. (In ETH 0 so ,vD TM an aw �aT aso dm asD nt Ro D.SnNal yn Rrid+ DW, 0.(2' m caweT .. f- in1 0[t+a M-vnnrin9 Well Lw Iibv* (R}+ Fr.a D.brmm an. UUoe aavu �•-•+aW DiS�wlnnvrcea�c-a �.ea..nrr+.e n,.r [.nry • Few la+n •imp... s.rw See PCE p L See ME a +FA gee CCE and Dm+ 1' N 1!B IM ... ... BRF a!B aBB Soo see ETH Distance From Source IA.) Tm: a9. rop.s prepare M[ma[ipn Lap ^yxu Relu ni io kw � GOLDER golder.com