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Home My WebLink About4103_Guilford_WhiteStreet_PhaseII_April22GW_FID1713120_20220819I pENR USE ONLY: I I ❑Paper Report ❑Electronic Data -Email CD (data loaded: Yes / No Doc/Event #: NC DENR Environmental Monitoring Division of Waste Management - Solid Waste Reporting 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 unit. 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 13B .1629 (4)(a)(i). Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCDENR-DWM, Solid Waste Section, 1646 Mail Service Center, Raleigh, NC 27699-1646. Solid Waste Monitoring Data Submittal Information Name of entity submitting data (laboratory, consultant, facility owner): 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 Phone: 336-852-4903 E-mail: dreedy@golder.com NC Landfill Rule: Actual sampling dates (e.g., Facility name: Facility Address: Facility Permit # (.0500 or .1600) October 20-24, 2006) White Street Landfill - Phase II 2503 White Street 41-03 .1600 April 19- 21, 2022 Greensboro, NC 27405 Environmental Status: (Check all that apply) Initial/Background Monitoring Detection Monitoring X❑ Assessment Monitoring ❑X Corrective Action T e of data submitted: (Check all that apply) X Groundwater monitoring data from monitoring wells Methane gas monitoring data Groundwater monitoring data from private water supply wells ❑X Corrective action data (specify) MNA Parameters Leachate monitoring data X Surface water monitoring data Other(specify) Notification attached? No. No groundwater or surface water standards were exceeded. X 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 213 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, dates, 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 concentrations 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 Lead Consultant/Geologist 336-852-4903 Fac�resent am int) Title (Area Code) Telephone Number Affix NC Licensed/ Professional Geologist Seal �� a' / S a 7 Signature Date 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, 2009) Revised 6/2009 GOLDER REPORT First Semi -Annual 2022 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 19131339.105 August 19, 2022 Distribution List 19131339.105 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 Michael Szychowicz, Landfill Compliance Supervisor, Field Operations, City of Greensboro, 2503 White Street, Greensboro, NC 27405. 336-254-8096. Michael.Szychowicz@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. XXNI) GOLDER August 19, 2022 19131339.105 Executive Summary On behalf of the City of Greensboro, Golder Associates NC, Inc., a member of WSP (Golder), is submitting the enclosed Water Quality Monitoring Report, which documents the results of the April 19 - 21, 2022, compliance monitoring event for the Phase II facility at the White Street Landfill. Compliance Monitoring Program During the April 2022 event, cobalt was detected at a concentration above the Practical Quantitation Limit (PQL) and North Carolina (NC) 2L Standard at downgradient compliance well II-1. Cobalt was detected at estimated concentrations below the PQL, but above the NC 2L Standard 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 standard for cobalt is 1 microgram per liter (ug/L) and the PQL is 10 ug/L. Naturally occurring metals, which include barium, cadmium, cobalt, vanadium, and zinc, were identified in the October 2006, Alternate Source Demonstration (ASD) and the November 2007 addendum. Therefore, no further action is warranted for the aforementioned cobalt concentrations. Nickel was detected at a concentration above the NC 2L Standard and the PQL at II-8 as it has been during recent events. During this event, 1,4-dichlorobenzene was detected at a concentration above the PQL and NC 2L standard in the sample from II-1. 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 compliance wells II-1, II-313, 114A, II-6, and II-8 during this event. 1,4-dioxane was analyzed for surface water and groundwater samples per the May 29, 2018, memorandum from the NC 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 2022 event. Corrective Action Monitoring Program During this event, cadmium was detected at a quantifiable concentration above the PQL and NC 2L Standard in downgradient well SMW-1. Cobalt was detected at an estimated concentration below the PQL but above the NC 2L Standard in the samples from II-9, SMW-1, and SMW-3 during this event. Cadmium and cobalt were determined to be naturally occurring in the October 2006 ASD and November 2007 addendum. Based on approved ASD, no further action is warranted for the cadmium and cobalt concentrations. No NC 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 sentinel well SMW-4 during this event. As stated above, this constituent is not required as part of the facility's monitoring program. Proposed Site -Specific Groundwater Protection Standards Due to the recent implementation of updated NC 2L Standards including standards for constituents that previously had Interim Maximum Allowable Concentrations (IMACs), and based on recent communications with the NC DEQ, site -specific groundwater protection standards (GPSs) have been proposed in this submittal. The following statistically calculated site -specific GPSs are proposed: ■ Cadmium: 19.0 micrograms per liter (ug/L) NNSI) GOLDER August 19, 2022 ■ Cobalt: 76.0 ug/L ■ Nickel: 170 ug/L. 19131339.105 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 April 2022. If you have any questions, please contact the undersigned at 336-852-4903. NNSI) GOLDER August 19, 2022 19131339.105 Table of Contents 1.0 INTRODUCTION.........................................................................................................................................1 1.1 Site Description and Background.....................................................................................................1 1.2 Compliance Monitoring History........................................................................................................1 1.3 Hydrogeologic Setting......................................................................................................................2 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION..........................................................3 2.1 Visual Inspection Program...............................................................................................................3 2.2 Well Network and Groundwater Elevation Measurements..............................................................3 2.3 April 2022 Monitoring Event.............................................................................................................4 2.4 Laboratory Analysis Program...........................................................................................................4 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...............................................................................................................5 4.1.2 Corrective Action Monitoring.......................................................................................................6 4.2 Proposed Site -Specific Groundwater Protection Standards............................................................6 5.0 CORRECTIVE ACTION PERFORMANCE MONITORING........................................................................7 6.0 CONCLUSIONS..........................................................................................................................................8 7.0 REFERENCES............................................................................................................................................8 No table of figures entries found. 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 X%til) GOLDER iv August 19, 2022 19131339.105 TABLE 6 Summary of Surface Water Monitoring Results, Detected Constituents TABLE 7 Summary of Surface Water Field Parameters FIGURES FIGURE 1 Groundwater Surface Contour Map, April 19, 2022 FIGURE 2 Surface Water Location Map APPENDICES APPENDIX A Groundwater and Surface Water Sampling Logs APPENDIX B April 2022 Groundwater Certificates -of -Analysis, Chain -of -Custody Forms and Laboratory Data Reviews APPENDIX C Statistical Worksheets and Summary Table APPENDIX D EPA Natural Attenuation Screening Protocol Forms and BIOCHLOR Monitored Natural Attenuation Analysis for April 2022 Sampling Event NNtil) GOLDER August 19, 2022 19131339.105 1.0 INTRODUCTION This report summarizes the monitoring results from the April 19 - 21, 2022, 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 III), 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 cover. 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 11 landfill. 1.2 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 (11-6, 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 11-713 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 in April 2010. 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. XXNI) GOLDER August 19, 2022 19131339.105 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 twelve 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, II4A, II-5, II-6, II-7, II-713, II-8, and II-12 are downgradient compliance wells for the Phase II landfill. Well 11-313 is sampled to monitor water quality downgradient of 11-3. 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 (11-1, 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 11 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 sampled in accordance with the permit 41-03, which includes the Phase I and Phase II landfills, but excludes the Phase III landfill. 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. XXNI) GOLDER August 19, 2022 19131339.105 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 April19, 2022, 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 19, 2022 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 sluc test data by BPA Environmental & Engineering Inc. (Phase ll) 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 300 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 2022 sampling event are discussed in the following sections. 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 this compliance monitoring 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 consists 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-7B, II-8, and II-12), one assessment well (II-313), and four sentinel wells (II-9, SMW-1, SMW-3, and SMW-4). Available monitoring well construction information for all site monitoring wells is summarized on XXNI) GOLDER August 19, 2022 19131339.105 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 2022 Monitoring Event Personnel from Golder visited the facility from April 19 — 21, 2022, 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 into the labeled, laboratory -supplied, pre -preserved sample containers after well stabilization 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 2022 groundwater and surface water samples were submitted to Environmental Conservation Laboratories, Inc. (ENCO) of Cary, NC under chain -of -custody control for analysis. Surface water samples were analyzed for NC Appendix I list of constituents. Groundwater samples were analyzed for the NC Appendix I list of constituents, plus tetrahydrofuran. Sentinel wells II-1, II-9, and SMW-3, and upgradient well X%NJ) GOLDER August 19, 2022 19131339.105 MW-14 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 monitoring well II4A by Golder personnel as part of the April 2022 sampling event for laboratory QA/QC. ENCO analyzed the duplicate sample for the NC Appendix II 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 II VOCs. A field blank was collected for the Phase III landfill and was compared to the surface water samples, which are shared between the Phase I, Phase II, and Phase III landfills. 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 II4A except for 1,4-dichlorobenzene at a relatively low concentration from the sample from the duplicate. Further, the concentrations from the duplicate sample and the sample from II4A were generally similar. The results do not identify any irregularities related to laboratory analyses. There were no NC Appendix I constituents in the laboratory method blanks and therefore no data qualification was required. 4.0 DATA EVALUATION Analytical results and field parameters for the April 2022 groundwater samples are summarized in Tables 4 and 5 with available historical data. Analytical results and field parameters for the April 2022 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 2022 groundwater and surface water samples are compared to applicable water quality standards below in Section 4.1.1. 4.1.1 Compliance Monitoring During the April 2022 event, cobalt was detected at a concentration above the Practical Quantitation Limit (PQL) and NC 2L Standard at downgradient compliance well II-1. Cobalt was detected at several downgradient wells (II-3, II-313, II-4A, II-5, and II-8) at estimated concentrations below their respective PQLs, but above the NC 2L Standard 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 standard for cobalt is 1 microgram per liter (ug/L) and the PQL is 10 ug/L. Naturally occurring metals, which include barium, cadmium, cobalt, vanadium, and zinc, were identified in the October 2006 ASD and November 2007 addendum. Therefore, no further action is warranted, but site -specific groundwater protection standards (GPS) are proposed for cobalt in Section 4.2 below. Nickel was detected at a concentration above the NC 2L Standard and the PQL at II-8 as it has during recent monitoring events. Statistically derived site -specific GPS are proposed for nickel in Section 4.2 below. During this event, 1,4-dichlorobenzene at II-1 was detected at a concentration above the PQL and groundwater standard. 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 compliance wells II-1, II-313, II4A, II-6, and II-8 during this event. 1,4-dioxane was analyzed for surface water XXNI) GOLDER August 19, 2022 19131339.105 and groundwater samples per the May 29, 2018, memorandum from the NC 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 2022 event. 4.1.2 Corrective Action Monitoring During this event, cadmium was detected at a quantifiable concentration above the NC 2L Standard in downgradient well SMW-1. Cobalt was detected at estimated concentrations below the PQL but above the NC 2L Standard in the samples from II-9, SMW-1, and SMW-3 during this event. Cadmium and cobalt were determined to be naturally occurring in the October 2006 ASD and November 2007 addendum. However, statistically derived site -specific GPSs are proposed for cadmium and cobalt as described in Section 4.2 below. No NC 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 sample from sentinel well SMW-4 during this event. As stated above, this constituent is not required as part of the facility's monitoring program. 4.2 Proposed Site -Specific Groundwater Protection Standards Due to the recent implementation of revised NC 2L Standards including standards for constituents that previously had Interim Maximum Allowable Concentrations (IMACs), and based on recent communications with the NC DEQ, site -specific groundwater protection standards (GPSs) have been proposed in this submittal. A summary of statistical methods and results used to determine appropriate background concentrations for inorganic compounds detected at concentrations above the PQLs and NC 2L Standards in samples from downgradient monitoring wells during the April 2022 event is provided in Appendix C. The statistical analyses were completed using WQStat software in accordance with 40 CFR 258, Title 15A NCAC 13B .1632(f) through (h). Per NC DEQ guidance, only samples that were collected with turbidity values of less than 10 Nephelometric Turbidity Units (NTU) were used in statistical analysis. The statistical summary sheets generated during the statistical analysis are included as Appendix C. Historical analytical data for cadmium, cobalt, and nickel from upgradient wells MW-13 and MW-14 were used to perform inter -well statistics to establish background concentrations. The inter -well background statistical limits for cadmium, cobalt, and nickel were based on the non -parametric prediction limits. The calculated cadmium and nickel background concentrations are less than their respective NC 2L Standards. The calculated background concentration for cadmium is less than the concentration at well SMW-1 during the April 2022 event. The calculated background concentration for nickel is less than the concentration at well II-8 during the April 2022 event. The calculated cobalt background concentration is equal to the PQL and is less than the cobalt concentration at well II-1 during the April 2022 event. Inter -well statistics does not account for spatial variability of the aquifer. Intra-well statistics is a method to account for spatial variability per the Statistical Analysis of Groundwater Monitoring Data at RCRA Facilities - Unified Guidance (EPA, 2009). Intra-well statistics were utilized for the cadmium concentrations at SMW-1, the cobalt concentrations at II-1, and the nickel concentrations at II-8. The intra-well background statistical limits for cadmium at SMW-1, cobalt at II-1, and nickel at II-8 were based on upper prediction limits. The April 2022 concentrations for cadmium at SMW-1, cobalt at 11-1, and nickel at 11-8 were determined to be below statistically determined background values. Based on the intra-well statistical analysis included as Appendix C, the following site -specific GPSs for the are proposed: XXNI) GOLDER August 19, 2022 19131339.105 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). 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 D 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 2022 event. Based on the EPA's screening protocol, monitoring wells II-1 and SMW-3 received a scores of 13 and 7, respectively, which indicates limited evidence for anaerobic biodegradation of chlorinated solvents (EPA,1999). Monitoring well II-9 received a score of 5, which indicates inadequate evidence for anaerobic biodegradation. The scores are lower than previous events due to the lack of chlorinated solvents in the samples during the April 2022 event. The natural attenuation screening protocol forms are included as Figures D-1, D-2, and D-3 in Appendix D. 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 2022 data to simulate remediation by natural attenuation using a screening model called BIOCHLOR (EPA, 2000). The flow paths between II-2 and SWM-1, II-3 and II-3B, and II-9 and SMW-3, 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 D. Figures D-4 and D-5 in Appendix D show the BIOCHLOR modeling results of flow path II-2 and SMW-1 for April 2022. Tetrachloroethene, trichloroethene, and vinyl chloride were not detected in samples from II-2 and SMW-1 during the event. Dichloroethene was not detected in the sample from SMW-1. Ethene was not analyzed for samples from II-2 and SMW-1 during the event. The dichloroethene concentration for II-2 plots below the line for first order of decay and the line for no degradation. 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. XXNI) GOLDER August 19, 2022 19131339.105 Figures D-6 and D-7 in Appendix D show the BIOCHLOR modeling results of flow path II-3 and II-313 for October 2021. Tetrachloroethene, trichloroethene, dichloroethane, and vinyl chloride were not detected in samples from either well during the event. Ethene was not analyzed for samples from II-3 and II-313 during the event. Figures D-8 and D-9 in Appendix C show the BIOCHLOR modeling results of flow path II-9 and SMW-3 for October 2021. Tetrachloroethene, trichloroethene, vinyl chloride, and ethene were not detected in samples from wells II-9 and SMW-3. Dichloroethene was not detected in the sample from II-9. The dichloroethene concentration for SMW-3 plots below the line for first order of decay and the line for no degradation. 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. 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 2022 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. Statistically calculated site -specific GPSs have been proposed for cadmium, cobalt, and nickel for Phase II landfill. The next CAPER is to be submitted prior to the second semi-annual water quality monitoring event of 2022, which is tentatively scheduled for October 2022. 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 XXNI) GOLDER August 19, 2022 Signature Page Golder Associates NC, Inc. David "Dusty" Y. Reedy II, PG Rachel P. Kirkman, PG Sr Lead Consultant, Geologist Director, Geologist Engineering Lic. No. C-2862/Geology Lic. No. C-399 19131339.105 Golder Associates NC, Inc. is a licensed user of the Golder trademark, and an associated operating entity. https://golderassociates.sharepoint.rom/sites/116193/20x,cwJphase 105- 1st sa wqm 2022/200 - deliverables/252 - final/phase ii/19131339.105-001-r-reva-phase_ii.docx W,I) GOLDER TABLES August 2022 TABLE 1 Summary of Historical Groundwater Elevation Data White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina iBi[ci[cgR)<iDb'i Well IDs MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D TOC Elevation 794.81 758.02 755.05 742.70 740.70 748.87 743.32 744.43 744.25 752.52 746.47 746.19 (it 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 10/14/98 768.75 26.06 736.33 21.69 742.11 12.94 730.94 11.76 724.42 16.28 732.42 16.45 734.96 8.36 731.62 12.81 728.45 15.80 745.95 6.57 734.07 12.40 735.15 11.04 03/25/99 769.24 25.57 736.82 21.20 745.02 10.03 731.78 10.92 721.98 18.72 733.18 15.69 739.66 3.66 736.42 8.01 735.20 9.05 749.27 3.25 733.42 13.05 734.31 11.88 09/23/99 767.95 26.86 737.10 20.92 745.42 9.63 731.70 11.00 721.56 19.14 733.46 15.41 737.37 5.95 734.98 9.45 733.32 10.93 747.74 4.78 734.44 12.03 734.14 12.05 03/29/00 770.65 24.16 737.81 20.21 745.49 9.56 732.18 10.52 724.04 16.66 734.43 14.44 740.46 2.86 734.83 9.60 731.92 12.33 749.28 3.24 734.41 12.06 735.14 11.05 09/14/00 770.77 24.04 738.06 19.96 745.51 9.54 732.17 10.53 723.13 17.57 734.09 14.78 739.26 4.06 734.13 10.30 731.02 13.23 747.87 4.65 733.87 12.60 734.98 11.21 03/12/01 771.28 23.53 737.74 20.28 745.64 9.41 732.68 10.02 724.20 16.50 734.48 14.39 740.22 3.10 733.50 10.93 730.06 14.19 748.33 4.19 734.85 11.62 735.32 10.87 09/13/01 770.11 24.70 736.59 21.43 743.12 11.93 732.51 10.19 722.43 18.27 733.21 15.66 737.10 6.22 732.48 11.95 729.69 14.56 747.94 4.58 733.25 13.22 734.60 11.59 03/08/02 769.40 25.41 737.00 21.02 744.46 10.59 733.04 9.66 721.55 19.15 734.02 14.85 739.40 3.92 733.21 11.22 730.14 14.11 748.62 3.90 733.04 13.43 733.44 12.75 09/18/02 767.39 27.42 736.07 21.95 742.34 12.71 732.22 10.48 723.06 17.64 732.72 16.15 736.79 6.53 731.86 12.57 729.71 14.54 747.62 4.90 732.61 13.86 732.44 13.75 04/15/03 774.50 20.31 739.88 18.14 747.53 7.52 733.18 9.52 729.39 11.31 737.14 11.73 741.95 1.37 737.30 7.41 736.84 7.41 749.62 2.90 735.66 10.81 735.23 10.96 10/16/03 776.43 18.36 738.00 20.02 745.07 9.98 732.76 9.94 726.23 14.47 734.39 14.48 739.49 3.83 734.49 9.94 731.88 12.37 749.68 2.84 733.79 12.68 734.63 11.56 03/24/04 775.55 19.26 739.16 18.86 743.93 11.12 732.69 10.01 726.06 14.64 733.55 15.32 738.78 4.54 735.05 9.38 731.44 12.81 749.58 2.94 733.73 12.74 734.32 11.87 09/22/04 772.40 22.41 737.15 20.87 745.18 9.87 732.72 9.98 723.41 17.29 734.08 14.79 738.96 4.36 734.81 9.62 732.42 11.83 749.29 3.23 733.48 12.99 733.96 12.23 O5/11/05 774.62 20.19 737.32 20.70 743.14 11.91 732.16 10.54 726.36 14.34 734.27 14.60 737.36 5.96 734.82 9.61 731.00 13.25 748.50 4.02 735.02 11.45 734.79 11.40 10/11/05 770.78 24.03 735.74 22.28 741.31 13.74 732.14 10.56 723.31 17.39 732.62 16.25 734.58 8.74 732.91 11.52 730.78 13.47 748.43 4.09 733.14 13.33 734.16 12.03 04/27/06 770.94 23.87 736.62 21.40 743.82 11.23 734.32 8.38 724.03 16.67 733.58 15.29 737.23 6.09 734.20 10.23 730.84 13.41 749.86 2.66 732.65 13.82 733.51 12.68 10/16/06 768.98 25.83 735.91 22.11 743.48 11.57 732.14 10.56 724.04 16.66 733.58 15.29 736.63 6.69 734.51 9.92 731.37 12.88 749.84 2.68 733.79 12.68 734.53 11.66 04/09/07 771.42 23.39 737.44 20.58 743.28 11.77 732.47 10.23 726.28 14.42 734.29 14.58 737.84 5.48 734.89 9.54 731.61 12.64 748.98 3.54 733.87 12.60 734.58 11.61 09/27/07 768.38 26.43 734.84 23.18 740.23 14.82 732.20 10.50 721.84 18.86 731.56 17.31 733.52 9.80 733.10 11.33 730.87 13.38 746.90 5.62 - - - - 05/01/08 768.35 26.46 738.79 19.23 745.75 9.30 733.08 9.62 724.88 15.82 734.88 13.99 739.42 3.90 736.09 8.34 735.06 9.19 749.41 3.11 734.93 11.54 733.83 12.36 12/03/08 766.24 28.57 735.23 22.79 740.98 14.07 732.20 10.50 720.52 20.18 732.92 15.95 735.91 7.41 734.32 10.11 731.25 13.00 749.07 3.45 - - 732.40 13.79 04/15/09 767.82 26.99 739.28 18.74 745.69 9.36 733.35 9.35 728.52 12.18 735.32 13.55 739.47 3.85 736.84 7.59 735.97 8.28 750.12 2.40 735.01 11.46 734.16 12.03 10/09/09 766.80 28.01 735.09 22.93 740.35 14.70 732.41 10.29 722.21 18.49 732.96 15.91 734.94 8.38 733.61 10.82 731.07 13.18 748.49 4.03 DRY DRY 731.87 14.32 04/27/10 770.97 23.84 736.87 21.15 743.47 11.58 731.99 10.71 727.15 13.55 734.33 14.54 737.22 6.10 735.06 9.37 732.48 11.77 749.47 3.05 733.42 13.05 733.95 12.24 10/05/10 767.85 26.96 735.25 22.77 742.46 12.59 731.46 11.24 722.28 18.42 733.44 15.43 735.39 7.93 734.02 10.41 732.79 11.46 748.15 4.37 732.58 13.89 732.47 13.72 05/11/11 767.14 27.67 737.54 20.48 743.97 11.08 732.40 10.30 725.66 15.04 734.77 14.10 737.66 5.66 734.97 9.46 732.75 11.50 748.67 3.85 732.93 13.54 733.18 13.01 10/05/11 765.42 29.39 734.38 23.64 741.12 13.93 731.16 11.54 720.77 19.93 732.93 15.94 734.94 8.38 733.82 10.61 731.47 12.78 747.51 5.01 732.58 13.89 731.45 14.74 04/19/12 767.01 27.80 737., 20.61 743.32 11.73 732.28 10.42 725.56 15.14 734.11 14.76 737.53 5.79 734.79 9.64 732.07 12.18 748.87 3.65 - - 732.63 13.56 10/22/12 765.74 29.07 736.13 21.89 741.60 13.45 731.96 10.74 727.05 13.65 733.01 15.86 735.18 8.14 733.77 10.66 731.52 12.73 748.70 3.82 - - 731.42 14.77 04/23/13 766.24 28.57 737.37 20.65 744.06 10.99 732.90 9.80 727.02 13.68 734.16 14.71 737.87 5.45 734.97 9.46 734.36 9.89 748.99 3.53 732.37 14.10 732.31 13.88 09/10/13 766.98 27.83 736.90 21.12 744.39 10.66 732.29 10.41 727.84 12.86 734.79 14.08 738.17 5.15 735.25 9.18 735.27 8.98 748.19 4.33 732.70 13.77 732.89 13.30 04/21/14 769.30 25.51 739.78 18.24 748.47 6.58 733.51 9.19 730.69 10.01 735.93 12.94 739.36 3.96 736.65 7.78 738.40 5.85 750.23 2.29 734.98 11.49 734.02 12.17 09/30/14 766.45 28.36 739.39 18.63 739.33 15.72 730.98 11.72 722.42 18.28 732.08 16.79 733.76 9.56 732.87 11.56 730.85 13.40 746.81 5.71 - - 731.51 14.68 04/13/15 765.75 29.06 736.90 21.12 743.71 11.34 733.17 9.53 727.10 13.60 734.03 14.84 737.78 5.54 734.75 9.68 734.12 10.13 748.57 3.95 732.70 13.77 732.11 14.08 10/05/15 765.03 29.78 - -- 746.17 8.88 733.71 8.99 724.60 16.10 734.56 14.31 738.61 4.71 735.98 8.45 739.19 5.06 748.90 3.62 734.59 11.88 732.21 13.98 04/18/16 769.03 25.78 737.35 20.67 743.86 11.19 732.92 9.78 727.47 13.23 734.03 14.84 737.33 5.99 734.66 9.77 733.23 11.02 748.69 3.83 732.70 13.77 732.73 13.46 09/27/16 767.18 27.63 734.01 24.01 - -- 732.01 10.69 723.39 17.31 733.86 15.01 736.42 6.90 733.50 10.93 731.71 12.54 748.81 3.71 732.70 13.77 732.08 14.11 04/25/17 766.23 28.58 737.31 20.71 745.54 9.51 736.93 5.77 724.27 16.43 734.95 13.92 738.95 4.37 736.16 8.27 737.92 6.33 750.05 2.47 733.56 12.91 732.55 13.64 10/16/17 765.46 29.35 733.21 -24.81 740.71 14.34 732.08 10.62 722.79 17.91 733.16 15.71 735.76 7.56 733.11 11.32 731.57 12.68 747.91 4.61 731.21 15.26 731.67 14.52 04/16/18 765.62 29.19 737.05 20.97 746.61 8.44 735.66 7.04 729.02 11.68 735.64 13.23 738.71 4.61 735.97 8.46 738.14 6.11 749.91 2.61 733.01 13.46 732.82 13.37 10/16/18 765.38 29.43 734.76 23.26 746.03 9.02 733.42 9.28 728.41 12.29 735.30 13.57 739.49 3.83 735.86 8.57 737.80 6.45 748.95 3.57 732.98 13.49 732.69 13.50 04/08/19 770.84 23.97 738.18 19.84 746.22 8.83 733.79 8.91 730.22 10.48 736.59 12.28 738.45 4.87 736.21 8.22 736.85 7.40 750.23 2.29 733.99 12.48 734.91 11.28 10/07/19 768.30 26.51 734.38 23.64 741.25 13.80 731.28 11.42 724.04 16.66 734.23 14.64 736.31 7.01 733.48 10.95 732.18 12.07 747.70 4.82 732.16 14.31 732.52 13.67 04/20/20 771.39 23.42 737.02 21.00 744.49 10.56 733.18 9.52 728.47 12.23 735.59 13.28 737.97 5.35 734.95 9.48 734.18 10.07 749.92 2.60 733.67 12.80 734.10 12.09 10/12/20 769.04 25.77 736.99 21.03 747.21 7.84 736.28 6.42 729.61 11.09 736.81 12.06 740.16 3.16 736.04 8.39 739.10 5.15 749.99 2.53 735.22 11.25 734.21 11.98 04/27/21 773.61 21.20 736.99 21.03 744.92 10.13 733.35 9.35 730.12 10.58 736.22 12.65 738.02 5.30 735.34 9.09 735.18 9.07 749.78 2.74 734.44 12.03 734.84 11.35 10/12/21 769.46 25.35 736.79 21.23 742.48 12.57 732.32 10.38 725.15 15.55 734.97 13.90 737.34 5.98 733.45 10.98 732.44 11.81 749.30 3.22 733.12 13.35 733.44 12.75 04/19/22 1 770.85 1 23.96 1 738.94 19.08 1 746.19 1 8.86 736.17 1 6.53 729.54 1 11.16 736.46 12.41 1 738.81 4.51 1 735.84 8.59 1 737.02 1 7.23 750.11 2.41 1 733.681 .79 733.99 12.20 MEAN 769.06 25.75 736.91 21.03 743.97 11.08 732.80 9.90 725.29 15.41 734.23 14.64 737.61 5.64 734.61 9.82 733.22 11.03 748.85 3.67 733.58 12.89 733.49 12.70 MAXIMUM 776.43 29. 78 739.88 24.01 748.47 15.72 736.93 11.76 730.69 20.18 737.14 17.31 741.95 9.80 737.30 12.81 739.19 15.80 750.23 6.57 735.66 15.26 735.32 14.77 MINIMUM 765.03 18.36 733.21 18.14 739.33 6.58 730.94 5.77 720.52 10.01 731.56 11.73 733.52 1.37 731.62 7.41 728.45 5.06 745.95 2.29 731.21 10.81 731.42 10.87 Notes: 1. ft AMSL = feet above mean sea level. 2. - = not measured or no data 3. TOC = top of casing 4. DRY = well was dry at the time of sampling 5. MW = monitoring well, DTW = depth to water, Elev = elevation 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. %XN11 GOLDER 1 of1 August 2022 TABLE 2 Summary of Estimated Horizontal Flow Velocities White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina 19131339.105 April 2022 Gradient Gradient Gradient Horizontal Hydraulic Hydraulic Flow Segment Effective Porosity Velocity Calculation Direction Segment Length Elevations Gradient (ne) Conductivity Conductivity (K, (Vyw, feetlyear) Segment (feet) feet (i, feet) (K, cm/sec) feet/year) i6 North -Northwest 1742 730 0.0230 0.02 2.61E-04 270.043 310 i6 North -Northeast 1962 ---------- 30---------- 0.0204 0.02 2.61E-04 270.043 275 Average i Average VFW 0.0217 293 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 Inc. 3. The effective porosity for saprolite was used in velocity calculations. 4. cm/sec = centimeters per second %%%I) GOLDER 1of1 August 2022 TABLE 3 Summary of Well Construction Information White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina 19131339.105 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 MW-15 857174.5368 1783969.0180 11/18/97 794.11 60.0 2 45.0 60.0 Water Table Aquifer Active MW-16 857277.6884 1785496.9142 11/19/97 756.41 1 28.5 2 13.5 28.5 Water Table Aquifer Active MW-17 857780.7809 1785247.6985 11/10/97 754.27 31.5 2 21.5 31.5 Water Table Aquifer Active MW-18 858310.0362 1785285.8365 12/10/97 742.07 17.5 2 7.5 17.5 Water Table Aquifer Active MW-19 858805.1318 1785224.3777 04/28/98 739.67 35.0 2 20.0 35.0 Water Table Aquifer Active MW-20 858894.5850 1784504.9273 11/21/97 748.15 25.0 2 10.0 25.0 Water Table Aquifer Active MW-21 858869.2585 1784122.0113 11/20/97 742.64 18.5 2 4.5 18.5 Water Table Aquifer Active MW-22 1 858823.2213 1783524.2001 1 02/19/98 750.99 30.0 2 15.0 30.0 Water Table Aquifer Active MW-23 858516.1468 1783360.1438 11/18/97 743.35 33.5 2 18.5 33.5 Water Table Aquifer Active MW-24 857894.6998 1783435.5655 11/12/97 751.81 12.0 2 4.0 12.0 Water Table Aquifer Active MW-25 858971.9561 1785039.6103 12/11/97 745.90 17.0 2 7.0 17.0 Water Table Aquifer Active MW-25D 858972.0005 1785035.2699 12/11/97 745.62 32.0 2 27.0 32.0 Upper Bedrock Aquifer Active Notes: 1. ft AMSL= feet above mean sea level 2. ft bgs = feet below ground surface 4. MW = monitoring well 5. Unless otherwise noted, well construction survey information, Water Quality Monitoring Reports and Water Quality Monitoring Plans provided by Survey Solutions S&ME. \\til) GOLDER 1 of 1 August 2022 19131339.105 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41.12 Greensboro, North Carolina Method Practical SWS Upgradient Wells Downgradient Wells Detected Monitoring Reporting Sample MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit Antimony ug/L 03/01/99 -- -- 30 ND ND ND ND ND ND ND ND ND ND ND ND ND NC 2L = 1 ug/L ug/L 09/23/99 -- -- 30 ND ND 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 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 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 ND ug/L 04/01/03 -- -- 30 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 30 ND ND 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 ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/06 -- -- 30 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 30 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 0.58 -- -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/07 0.68 -- -- ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/01/08 0.68 -- 6 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 12/03/08 0.68 -- 6 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/15/09 0.68 -- 6 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/09 0.073 -- 6 ND ND ND ND ND ND ND ND ND 0.162 J -- ND ND ug/L 04/27/10 0.22 -- 6 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/04/10 0.22 -- 6 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/11/11 0.22 -- 6 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/11/11 0.22 -- 6 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/19/12 0.22 -- 6 0.881 J 0.5 J 0.239 J ND 0.254 J ND ND ND ND ND - ND ND ug/L 10/22J12 0.22 -- 6 ND 0.261 J ND ND ND ND ND ND ND ND -- ND ND ug/L 04/23/13 0.22 -- 6 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/10/13 0.22 -- 6 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 0.22 -- 6 0.942 J 1.63 J 0.428 J 0.346 J 0.489 J ND ND ND ND ND ND ND ND ug/L 09/30/14 0.22 -- 6 0.565 J 1.25 J 0.278 J ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 0.22 -- 6 ND 0.552 J ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 0.22 -- 6 ND 2.25 J ND ND ND ND ND ND ND ND ND ND ND ug/L 04/18/16 0.22 -- 6 0.307 J ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 0.22 -- 6 ND ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 0.37 -- 6 0.472 J ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/17 0.37 -- 6 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/16/18 1.85 -- 6 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 ug/L 04/12/19 0.74 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/08/19 0.74 2.00 -- 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 ug/L 10/13/20 0.74 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 0.74 2.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/12/21 0.74 2.00 - ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/19/22 0.74 2.00 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 09/23/99 -- -- 10 ND ND 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 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 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 ND ug/L 04/01/03 -- -- 10 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 10 ND ND 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 ND ND ug/L 04/27/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 2.0 -- 10 ND ND ND 2.3 J 2.4 J ND ND ND ND ND ND 2.9 J ND ug/L 09/24/07 2.0 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/01/08 2.0 -- 10 ND 3.7 J ND 2.4 J 2.4 J ND 4.3 J ND ND ND ND ND ND ug/L 12/03/08 2.8 -- 10 ND ND ND ND ND ND 3.6 J ND ND ND -- ND ND ug/L 04/15/09 2.8 -- 10 ND ND ND ND ND ND ND ND ND ND ND 5.5 J ND ug/L 10/07/09 2.8 -- 10 3.16 J 3.81 J 3.29 J 4.13 J 4.69 J 4.7 J 3.29 J ND ND ND -- ND ND ug/L 04/27/10 2.8 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/04/10 2.8 -- 10 ND 2.97 B ND ND ND ND ND ND ND ND -- ND ND ug/L O5/11/11 2.8 -- 10 3.61 J 3.71 J 2.86 J 3.14 J ND ND ND 4.10 J ND 5.15 J ND ND ND ug/L 10/11/11 2.8 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/19/12 2.8 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/22J12 2.8 -- 10 ND ND 4.97 J ND ND ND ND ND 4.60 J ND -- 2.89 J ND ug/L 04/23/13 2.8 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/10/13 5.4 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 5.4 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 5.4 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 6.8 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 6.8 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/18/16 6.8 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 6.8 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 6.8 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/17 6.8 -- 10 8.33 J ND 7.12 J 7.35 J ND ND 7.23 J ND ND ND -- ND ND ug/L 04/16/18 6.8 -- 10 ND ND ND ND ND ND ND ND ND 8.32 J 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 ug/L 04/12/19 7.6 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/08/19 7.6 10.0 -- 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 ug/L 10/13/20 7.6 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 7.6 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/12/21 7.6 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/19/22 7.6 10.0 ND ND ND ND ND ND ND ND ND ND ND ND ND W,J) GOLDER 1 of 11 August 2022 19131339.105 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41.12 Greensboro, North Carolina Method Practical SWS Upgradient Wells Downgradient Wells Detected Monitoring Reporting Sample MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit 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 09/23/99 -- -- 500 ND ND 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 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 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 ND ug/L 04/01/03 -- -- 500 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 500 ND ND 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 ND ND ND ug/L 10/01/05 -- -- 500 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/06 -- -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 500 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 -- -- 100 33.5 1 208 55.1 1 23.5 1 17.7 1 64.4 1 27.8 1 93.2 1 66.8 1 332 28.7 1 12 1 ND ug/L 09/24/07 -- -- 100 29.9 1 176 50.3 1 29.0 1 17.2 1 39.2 1 30.7 1 80.4 1 60.0 1 382 - 13 J ND ug/L O5/01/08 0.2 -- 100 30.3 B 148 B 52.7 B 23.0 B 31.7 B 55.4 B 30.0 B 136 B 66.6 B 4" B 19.6 B 16.2 B - ug/L 12/03/08 1.00 -- 100 28.6 1 163 49.3 1 28.1 1 31.0 1 63.6 1 30.1 1 78.5 1 61.4 1 444 - 12.4 1 ND ug/L 04/15/09 4.2 -- 100 27.9 1 148 57.6 1 34.3 1 32.7 1 62.7 1 30.2 1 207 59.4 1 447 22.8 1 19.1 1 ND ug/L 10/07/09 1.0 -- 100 21.8 1 179 52.4 1 25.9 1 22.1 1 76.4 1 35.9 1 96.4 1 65.0 1 465 -- 13.5 1 ND ug/L 04/27/10 1.0 -- 100 23.8 1 156 51.8 1 23.6 1 21.1 1 65.9 1 32.5 1 233 56.3 1 429 23.4 1 13.5 1 ND ug/L 10/04/10 1.0 -- 100 21.6 1 154 47.4 1 25.5 1 17.1 1 60.1 1 33.7 1 107 53.7 1 427 -- 11.3 1 ND ug/L O5/11/11 1.0 -- 100 25.5 1 127 54.0 1 24.1 1 36.9 1 71.6 1 34.8 1 162 53.2 1 383 22.7 1 15.3 1 ND ug/L 10/11/11 1.0 -- 100 21.5 1 139 51.5 1 22.1 1 40.8 1 64.7 1 36.4 1 112 53.4 1 407 -- 13.8 1 ND ug/L 04/19/12 1.0 -- 100 27.6 1 114 53.8 1 24.2 1 25.0 1 70.3 1 36.1 1 136 56.9 1 393 - 14.6 1 ND ug/L 10/22J12 1.0 -- 100 24.6 1 125 48.6 1 23.3 1 27.7 1 79.1 1 35.9 1 134 53.6 1 ND - 13.6 1 ND ug/L 04/23/13 1.0 -- 100 27.4 1 115 56.1 1 23.6 1 28.9 1 74.2 1 36.9 1 146 57.4 1 374 -- 18.2 1 ND ug/L 09/10/13 1.0 -- 100 36.5 1 104 51.8 1 27.5 1 24.5 1 64.9 1 37.5 1 186 65.1 1 368 ND 16.5 1 ND ug/L 04/23/14 1.0 -- 100 22.8 1 94.5 1 54.3 1 32.6 1 54.4 1 58.8 1 39.4 1 191 55.5 1 355 20.5 1 23.9 1 ND ug/L 09/30/14 1.0 -- 100 22.1 1 120 54.3 1 24.7 1 38.4 1 46.0 1 37.4 1 179 55.7 1 363 -- 13.9 1 ND ug/L 04/13/15 1.0 -- 100 31.4 1 121 57.2 1 25.0 1 48.2 1 62.5 1 45.3 1 157 63.2 1 385 -- 21.3 1 ND ug/L 10/05/15 1.0 -- 100 20.0 1 116 45.8 1 21.6 1 75.5 1 34.6 1 36.8 1 114 50.2 1 313 21.1 1 14.7 1 ND ug/L 04/18/16 1.0 -- 100 25.6 1 81.4 1 53.0 1 23.7 1 37.2 1 49.5 1 40.7 1 170 52.2 1 300 - 17.4 1 ND ug/L 09/27/16 1.0 -- 100 27.7 1 110 51.1 1 29.3 1 26.9 1 48.4 1 50.0 1 137 53.3 1 344 21.1 1 -- ND ug/L 04/27/17 1.0 -- 100 27.2 1 128 55.9 1 20.9 1 39.4 1 55.5 1 46.3 1 149 61.2 1 342 18.1 1 14.8 1 ND ug/L 10/16/17 1.0 -- 100 17.8 1 119 51.9 1 24.3 1 28.5 1 51.8 1 49.6 1 162 83.1 1 320 - 13.5 1 ND ug/L 04/16/18 1.0 - 100 19.4 1 129 59.2 1 20.2 1 57.0 1 67.1 1 49.9 1 216 84.0 1 298 20.7 1 18.6 1 ND ug/L 10/16/18 1.1 10.0 - 17.5 123 49.4 23.9 36.3 60.3 51.3 174 95.6 284 17.4 16.3 101 ug/L 04/12/19 1.1 10.0 - 19.3 93.5 63.1 22.2 35.5 63.3 54.7 193 76.6 277 17.3 17.7 ND ug/L 10/08/19 1.1 10.0 - 15.6 106 57.0 25.2 23.2 63.0 67.6 178 94.6 355 21.5 16.3 ND ug/L 04/20/20 1.1 10.0 -- 25.3 95.4 57.9 23.6 27.4 57.9 55.0 181 78.9 292 15.5 16.7 ND ug/L 10/13/20 1.1 10.0 -- 21.4 103 60.5 28.1 35.6 64.0 65.4 165 80.8 339 19.4 16.8 ND ug/L 04/27/21 1.1 10.0 -- 21.4 94.9 64.8 27.3 29.2 63.0 57.4 202 77.3 349 19.1 18.8 ND ug/L 10/12/21 1.1 10.0 -- 19.5 105 55.3 27.5 24.1 58.3 57.2 152 92.2 341 20.2 14.2 ND u /L 04/19/22 1.1 10.0 26.4 99.7 60.6 22.1 33.1 57.4 49.6 183 66.6 276 16.5 13.8 ND Beryllium ug/L 03/01/99 -- -- 2 ND ND ND ND ND ND ND ND ND ND ND ND ND NC 2L=4 ug/L ug/L 09/23/99 -- -- 2 ND ND 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 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 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 ND ug/L 04/01/03 -- -- 2 ND ND ND ND ND ND ND ND ND ND ND 2.5 ND ug/L 10/01/03 -- -- 2 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 2 ND ND 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 ND ND ug/L 04/27/06 -- -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 2 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 0.7 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/07 0.7 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/01/08 0.7 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 12/03/08 0.1 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/15/09 0.08 -- 1 ND ND ND ND 0.09 1 ND ND ND ND ND ND ND ND ug/L 10/07/09 0.1 -- 1 ND ND ND ND 0.562 1 ND ND ND ND ND -- ND ND ug/L 04/27/10 0.1 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/04/10 0.1 -- 1 0.121 1 ND 0.121 1 ND ND ND ND ND ND ND -- ND ND ug/L O5/11/11 0.1 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/11/11 0.1 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/19/12 0.1 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/22J12 0.1 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/23/13 0.1 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/10/13 0.1 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 0.1 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 0.1 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 0.1 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 0.1 -- 1 ND ND ND ND 0.483 1 ND ND ND ND ND ND ND ND ug/L 04/18/16 0.1 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 0.1 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/17 0.13 -- 1 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 ug/L 10/16/18 0.16 1.00 -- 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 0.166 1 ND ND ND ND ND ND ND ND ND ug/L 10/08/19 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/12/21 0.16 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/19/22 0.16 1.00 ND ND ND ND ND ND ND ND ND ND ND ND ND W,J) GOLDER 2 of 11 August 2022 19131339.105 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41.12 Greensboro, North Carolina Method Practical SWS Upgradient Wells Downgradient Wells Detected Monitoring Reporting Sample MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit Cadmium ug/L 03/01/99 -- -- 1 2 2 1 1 1 2 2 2 2 ND 2 2 ND NC 2L = 2 ug/L ug/L 09/23/99 -- -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND EPA MCL = 5 ug/L ug/L 03/01/00 -- -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/01/00 -- -- 1 1 ND ND ND ND ND ND ND ND ND ND ND ND ug/L 03/01/01 -- -- 1 ND ND ND ND ND ND ND 1 ND ND ND ND ND ug/L 09/01/01 -- -- 1 1.1 ND ND ND ND ND ND 1 ND ND ND ND ND ug/L 03/01/02 -- -- 1 1.1 ND ND 1.1 ND ND ND 1.1 ND ND ND ND ND ug/L 09/01/02 -- -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/01/03 -- -- 1 1.0 ND ND ND ND ND ND ND ND ND 3.5 4.2 ND ug/L 10/01/03 -- -- 1 1.1 1.2 ND ND ND ND ND ND ND ND ND ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 1 ND ND 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 ND ND ug/L 04/27/06 -- -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 0.5 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/07 0.5 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/01/08 0.5 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 12/03/08 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/15/09 0.09 -- 1 0.12 B ND 0.13 B 0.1 B 0.26 B 0.15 B 0.15 B ND B 0.21 B 0.28 B ND ND -- ug/L 10/07/09 0.36 -- 1 ND ND ND ND 0.563 1 ND ND ND ND ND -- ND ND ug/L 04/27/10 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/04/10 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/11/11 0.36 -- 1 ND ND ND ND ND ND ND ND ND 0.393 1 ND ND ND ug/L 10/11/11 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/19/12 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/22J12 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/23/13 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/10/13 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/18/16 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 0.36 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/17 0.36 -- 1 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 ug/L 10/16/18 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND 0.447 B 0.361 1 ug/L 10/08/19 0.36 1.00 -- 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 ND ND ug/L 10/13/20 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 0.36 1.00 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/12/21 0.36 1.00 - ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/19/22 0.36 1.00 ND ND ND ND ND ND ND ND ND ND ND ND ND Chromium ug/L 03/01/99 -- -- 10 ND ND ND ND ND 11 ND ND ND ND ND ND ND NC 2L = 10 ug/L ug/L 09/23/99 -- -- 10 ND ND 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 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 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 ND ug/L 04/01/03 -- -- 10 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 10 ND ND 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 ND ND ug/L 04/27/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 2.0 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/07 2.0 -- 10 ND ND ND ND ND ND ND ND ND 2.4 1 -- 2.1 1 ND ug/L O5/01/08 2.0 -- 10 ND ND 112 30.3 11.1 ND 3.2 1 ND ND ND 14.1 5.2 1 ND ug/L 12/03/08 1.0 -- 10 ND 1.7 1 2.0 1 ND 1.2 1 ND 3.2 1 ND ND ND -- 3.0 1 ND ug/L 04/15/09 0.7 -- 10 ND ND 2.6 1 ND 1.6 d 0.8 1 1.2 d 0.9 1 ND d 0.8 1 1.0 d 2.1 1 ND ug/L 10/07/09 1.0 -- 10 ND 1.79 1 1.47 1 ND 1.84 1 ND ND ND ND ND -- 2.2 1 ND ug/L 04/27/10 1.0 -- 10 1.37 1 ND 1.64 1 ND ND ND 1.78 1 ND ND ND 1.37 d 2.26 1 ND ug/L 10/04/10 1.0 -- 10 1.20 1 ND 1.74 1 ND ND ND 1.24 1 ND ND ND -- 2.26 1 ND ug/L O5/11/11 1.0 -- 10 ND 1.12 1 2.41 1 ND 2.34 d 1.42 1 ND ND ND 1.77 1 1.17 d 2.56 1 ND ug/L 10/11/11 1.0 -- 10 ND ND ND ND 1.59 1 ND ND 1.20 1 ND 1.54 1 -- 2.18 1 ND ug/L 04/19/12 1.0 -- 10 ND ND 1.25 1 ND 1.14 d 1.07 1 ND ND ND 1.10 1 -- 3.05 1 ND ug/L 10/22J12 1.0 -- 10 ND 1.18 1 ND ND ND 1.07 1 1.14 1 ND ND ND -- 2.46 1 ND ug/L 04/23/13 1.4 -- 10 5.38 d 1.56 1 1.52 1 ND ND 4.38 1 4.26 d 2.2 1 ND 2.43 1 -- 3.88 1 ND ug/L 09/10/13 1.4 -- 10 ND ND ND ND ND ND ND ND ND ND ND 2.02 1 ND ug/L 04/23/14 1.4 -- 10 ND ND ND ND ND ND ND ND 1.97 d 2.58 1 ND 1.88 1 ND ug/L 09/30/14 1.4 -- 10 ND 1.58 B 1.95 B 1.62 B ND 1.79 B 1.63 B ND ND 1.77 B -- 3.33 B -- ug/L 04/13/15 1.4 -- 10 ND ND ND ND ND 1.61 1 ND ND ND 2.07 1 -- 1.86 1 ND ug/L 10/05/15 1.4 -- 10 ND ND ND ND ND ND ND ND ND ND ND 1.61 1 ND ug/L 04/18/16 1.4 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 1.4 -- 10 ND ND ND ND ND ND ND ND ND ND 1.53 d -- ND ug/L 04/27/17 1.4 -- 10 ND 1.97 1 ND ND ND 1.88 1 ND ND ND ND ND 1.92 1 ND ug/L 10/16/17 1.4 -- 10 ND ND ND ND ND 2.09 1 ND ND ND ND -- 1.80 1 ND ug/L 04/16/18 1.4 -- 10 ND ND ND ND ND 2.16 1 ND ND ND 1.59 1 3.36 1 1.76 1 ND ug/L 10/16/18 1.4 10.0 -- ND ND ND ND ND 2.29 1 ND ND ND ND ND 2.28 1 ND ug/L 04/12/19 1.4 10.0 -- ND ND ND ND ND 2.60 1 ND ND ND ND ND 1.79 1 ND ug/L 10/08/19 1.4 10.0 -- ND ND ND ND ND 1.47 1 ND ND ND ND 1.77 1 2.43 1 ND ug/L 04/20/20 1.4 10.0 -- ND ND ND ND ND 1.80 1 ND ND ND ND ND 3.00 1 ND ug/L 10/13/20 1.4 10.0 -- ND 1.44 1 ND ND 1.76 1 2.83 d 1.57 1 ND 1.63 1 2.10 1 ND 2.08 1 ND ug/L 04/27/21 1.4 10.0 -- ND ND ND ND ND 1.46 1 ND ND ND ND ND 2.25 1 ND ug/L 10/12/21 1.4 10.0 -- ND ND ND ND 1.49 1 3.24 1 ND ND 4.09 1 1.51 d 3.85 1 2.52 1 ND u /L 04/19/22 1.4 10.0 ND ND ND ND ND ND ND 29.3 ND ND ND ND 1.92 1 ND W,J) GOLDER 3 of 11 August 2022 19131339.105 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41.12 Greensboro, North Carolina Method Practical SWS Upgradient Wells Downgradient Wells Detected Monitoring Reporting Sample MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit Cobalt ug/L 03/01/99 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND NC 2L = 1 ug/L ug/L 09/23/99 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND Proposed SGPS = 3.54 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 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 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 ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ND ND ND ND 12 14 ND ug/L 10/01/03 -- -- 10 ND ND ND 12 ND ND ND ND ND ND ND ND ND ug/L 04/01/04 -- -- -- -- __ __ __ ug/L 09/01/04 -- -- 10 ND ND ND 10 J 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 ND ND ug/L 04/27/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND 11.1 ND ND ND ND ND ND ND ND ND ug/L 04/09/07 2 -- 10 ND ND ND 9.0 J ND ND ND ND ND 2.6 J ND ND ND ug/L 09/24/07 2 -- 10 ND ND ND ND ND ND ND ND ND 2.9 J -- ND ND ug/L O5/01/08 2 -- 10 ND 2.3 J ND 3.9 J ND ND 2.3 J ND ND 4.8 J ND ND ND ug/L 12/03/08 1.1 -- 10 ND 1.6 J ND 9.1 J 1.2 J 3.0 J 2.2 J 1.4 J ND 4.3 J -- ND ND ug/L 04/15/09 0.6 -- 10 ND ND ND 8.7 J ND ND ND ND ND 1.4 J ND ND ND ug/L 10/07/09 1.1 -- 10 ND 1.58 J ND 5.89 J 1.34 J ND ND ND ND 6.23 J -- ND ND ug/L 04/27/10 1.1 -- 10 ND 1.39 J ND 3.25 J ND ND ND ND ND 9.33 J ND ND ND ug/L 10/04/10 1.1 -- 10 ND 1.70 J ND 2.04 J ND ND ND ND ND 4.47 J -- ND ND ug/L O5/11/11 1.1 -- 10 ND ND ND 3.85 J ND ND ND ND ND 3.64 J ND ND ND ug/L 10/11/11 1.1 -- 10 ND 1.20 J ND 1.15 J ND ND ND ND ND 6.28 J -- ND ND ug/L 04/19/12 1.1 -- 10 ND 1.96 J ND 1.20 J ND ND ND ND ND 5.33 J -- ND ND ug/L 10/22J12 1.1 -- 10 ND ND ND 1.71 J ND ND ND ND ND ND -- ND ND ug/L 04/23/13 1.1 -- 10 ND 1.72 J ND 2.46 J ND ND ND ND ND 2.53 J -- ND ND ug/L 09/10/13 1.1 -- 10 ND 3.61 J ND 6.73 J ND ND ND ND ND 2.41 J ND ND ND ug/L 04/23/14 1.1 -- 10 ND 1.89 J ND 1.30 J ND ND ND ND ND ND ND ND ND ug/L 09/30/14 1.1 -- 10 ND 1.26 J ND 4.15 J 1.58 J ND ND ND ND 3.72 J -- ND ND ug/L 04/13/15 1.1 -- 10 ND ND ND ND ND ND ND ND ND 5.20 J -- ND ND ug/L 10/05/15 1.1 -- 10 ND ND ND ND 1.32 J ND ND ND ND 4.09 J ND ND ND ug/L 04/18/16 1.1 -- 10 ND 2.01 J ND ND ND ND ND ND ND 6.24 J -- ND ND ug/L 09/27/16 1.1 -- 10 ND ND ND ND ND ND ND ND ND 4.40 J ND -- ND ug/L 04/27/17 1.1 -- 10 ND 1.28 J ND ND ND ND ND ND ND 5.13 J ND ND ND ug/L 10/16/17 1.1 -- 10 ND ND ND 1.51 J ND ND ND ND ND 2.17 J -- ND ND ug/L 04/16/18 1.1 -- 10 ND ND ND ND 1.51 J ND ND ND ND ND ND ND ND ug/L 10/16/18 1.4 10.0 -- ND 1.45 J ND ND ND ND ND ND ND 1.80 J ND ND ND ug/L 04/12/19 1.4 10.0 -- ND 2.29 J 1.41 J ND ND ND 2.00 J ND ND ND ND ND ND ug/L 10/08/19 1.4 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 1.4 10.0 -- ND ND ND ND ND ND ND ND ND 2.60 J ND ND ND ug/L 10/13/20 1.4 10.0 -- ND ND ND 2.58 J ND ND ND ND ND ND ND ND ND ug/L 04/27/21 1.4 10.0 -- ND ND ND ND ND ND ND ND ND 7.27 J ND ND ND ug/L 10/12/21 1.4 10.0 -- ND 1.75 1 ND 1.93 1 ND ND ND ND ND ND ND ND ND u /L 04/19/22 1.4 10.0 ND ND ND ND ND ND ND ND ND 5.44 J ND 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 09/23/99 -- -- 200 ND ND ND ND ND ND ND ND ND ND ND ND ND EPA MCL = 1300 ug/L ug/L 03/01/00 -- -- 200 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/01/00 -- -- 200 ND ND 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 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 ND ug/L 04/01/03 -- -- 200 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 200 ND ND 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 ND ND ug/L 04/27/06 -- -- 200 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 200 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 0.60 -- 10 ND 2.3 1 0.7 1 ND 1.7 1 ND 1.3 1 ND ND ND 3.0 1 1.1 1 ND ug/L 09/24/07 0.6 -- 10 ND 4.9 1 ND ND ND 1.0 1 ND ND ND ND -- ND ND ug/L O5/01/08 0.6 -- 10 ND 4.1 1 1.9 1 4.7 1 1.8 1 ND 1 2.2 1 ND 0.8 1 11.1 2.9 1 ND ND ug/L 12/03/08 1.6 -- 10 ND 7.8 1 ND ND 2.8 1 3.6 1 2.3 1 ND ND 9.2 1 -- ND ND ug/L 04/15/09 0.81 -- 10 ND 0.99 1 ND ND ND ND ND 1.62 1 ND ND 0.98 1 ND ND ug/L 10/07/09 1.6 -- 10 ND 5.98 1 ND ND ND ND 2.22 1 ND ND 7.11 1 -- ND ND ug/L 04/27/10 1.6 -- 10 ND ND 2.63 1 1.94 1 ND ND ND ND ND 2.64 1 6.56 1 ND ND ug/L 10/04/10 1.6 -- 10 1.99 1 ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/11/11 1.6 -- 10 4.15 1 4.25 1 ND 3.67 1 3.52 1 ND ND ND ND 154 2.55 1 1.66 1 ND ug/L 10/11/11 1.6 -- 10 ND ND ND 2.67 1 ND ND ND 2.12 1 ND 21.3 -- ND ND ug/L 04/19/12 1.6 -- 10 ND 2.25 1 ND ND ND ND 5.29 1 ND ND 13.1 -- ND ND ug/L 10/22J12 1.6 -- 10 ND ND ND ND ND ND ND ND ND 1.69 1 -- ND ND ug/L 04/23/13 1.6 -- 10 ND 3.37 1 ND ND ND ND ND ND ND ND -- ND ND ug/L 09/10/13 1.6 -- 10 ND 4.36 1 ND 2.09 1 ND ND ND ND ND ND ND ND ND ug/L 04/23/14 1.6 -- 10 ND 2.35 1 ND 2.67 1 3.43 1 ND ND ND ND ND ND ND ND ug/L 09/30/14 1.6 -- 10 ND 3.45 1 ND 3.09 1 2.40 1 ND ND ND ND 1.81 1 -- ND ND ug/L 04/13/15 1.6 -- 10 2.22 1 7.66 1 ND 2.79 1 3.56 1 ND ND ND 1.98 1 5.63 1 -- ND ND ug/L 10/05/15 1.6 -- 10 ND ND ND ND 2.74 1 ND ND ND ND 1.94 1 ND ND ND ug/L 04/18/16 1.6 -- 10 ND 17.2 2.26 1 2.24 1 5.26 1 ND 2.25 1 ND ND 1.81 1 -- ND ND ug/L 09/27/16 1.6 -- 10 4.18 1 9.16 1 4.70 1 4.69 1 5.87 1 4.17 1 5.79 1 3.98 1 1.86 1 5.45 1 5.15 1 -- ND ug/L 04/27/17 1.6 -- 10 4.98 1 18.7 ND 2.41 1 2.44 1 ND ND ND ND ND 2.76 1 ND ND ug/L 10/16/17 1.6 -- 10 1.83 1 6.86 1 ND 2.52 1 3.32 1 2.70 1 1.76 1 3.25 1 3.25 1 ND - 1.93 1 ND ug/L 04/16/18 1.6 - 10 ND 7.08 1 ND 3.53 1 4.96 1 ND ND ND ND ND 3.60 1 ND ND ug/L 10/16/18 1.6 10.0 -- 2.68 1 1.72 1 ND 1.79 1 ND 4.26 1 ND ND ND 4.80 1 ND ND ND ug/L 04/12/19 1.6 10.0 -- ND 2.22 1 ND ND ND 2.38 1 ND ND ND 2.17 1 ND ND ND ug/L 10/08/19 1.6 10.0 -- ND 3.28 1 ND 1.98 1 ND 2.79 1 1.87 1 7.04 1 2.23 1 ND 2.56 1 ND ND ug/L 04/20/20 1.6 10.0 -- ND 8.84 1 ND ND ND ND 11.5 12.3 ND ND ND ND ND ug/L 10/13/20 1.6 10.0 -- ND 6.55 1 ND 6.87 1 2.24 1 1.86 1 2.01 1 6.46 1 ND 2.29 1 ND ND ND ug/L 04/27/21 1.6 10.0 -- ND ND ND ND ND ND ND 4.27 1 ND ND ND ND ND ug/L 10/12/21 1.6 10.0 -- ND ND ND 1.96 B ND 1.66 B ND 5.81 B ND 9.33 B ND ND 2.62 1 u /L 04/19/22 1.6 10.0 ND 2.12 1 ND ND ND ND ND 5.01 1 ND 7.70 1 ND ND ND W,J) GOLDER 4 of 11 August 2022 19131339.105 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41.12 Greensboro, North Carolina Method Practical SWS Upgradient Wells Downgradient Wells Detected Monitoring Reporting Sample MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit Lead ug/L 03/01/99 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND NC 21- = 15 ug/L ug/L 09/23/99 -- -- 10 ND ND 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 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 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 ND ug/L 04/01/03 -- -- 10 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 10 ND ND 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 ND ND ug/L 04/27/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 2.0 -- 10 ND ND ND ND ND 2.3 1 ND ND ND ND ND ND ND ug/L 09/24/07 2.0 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/01/08 2.0 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 12/03/08 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/15/09 1.6 -- 10 2.3 1 ND ND ND 3.0 1 ND ND 2.2 1 ND 2.6 1 ND ND ND ug/L 10/07/09 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/27/10 1.9 -- 10 ND ND ND ND ND ND ND ND ND 2.78 1 ND ND ND ug/L 10/04/10 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/11/11 1.9 -- 10 ND ND ND ND 2.49 1 ND ND ND ND 2.03 1 ND ND ND ug/L 10/11/11 1.9 -- 10 ND ND ND ND ND ND 1.94 1 ND ND 2.21 1 -- ND ND ug/L 04/19/12 1.9 -- 10 1.94 1 2.86 1 ND ND ND ND ND ND ND 3.50 1 -- 2.17 1 ND ug/L 10/22J12 1.9 -- 10 2.09 1 2.80 1 2.07 1 2.68 1 2.60 1 ND ND 2.24 2.67 1 ND -- 2.49 1 ND ug/L 04/23/13 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/10/13 2.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 2.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 2.1 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 3.1 -- 10 ND ND ND ND 7.88 1 ND ND 5.39 1 ND ND ND ND ND ug/L 04/18/16 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/17 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/16/18 3.1 -- 10 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 ug/L 04/12/19 3.1 10.0 -- ND ND ND ND ND ND ND ND ND 4.29 1 ND ND ND ug/L 10/08/19 3.1 10.0 -- 3.69 1 3.66 1 ND ND ND ND 4.00 1 ND ND ND ND ND ND ug/L 04/20/20 3.1 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 3.1 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 3.1 10.0 -- NO 3.56 B 4.35 B 5.61 B 4.12 B ND ND 5.12 B ND 3.23 B 3.23 B 3.85 B 3.20 1 ug/L 10/12/21 3.1 10.0 -- NO ND NO ND NO ND NO ND NO ND NO ND NO u /L 04/19/22 3.1 10.0 ND ND ND ND ND ND 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 21- = 100 ug/L ug/L 09/23/99 -- -- 50 ND ND 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 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 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 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 ND ug/L 04/01/03 -- -- 50 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 50 ND ND 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 ND ND ug/L 04/27/06 -- -- 50 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 50 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 2.0 -- 50 ND ND J ND ND ND 4.2 1 ND ND ND 2.8 1 ND ND ND ug/L 09/24/07 2.0 -- 50 ND 4.9 1 ND ND ND ND ND ND ND 9.4 1 -- ND ND ug/L O5/01/08 2.0 -- 50 ND 6.0 1 87.7 25.4 1 9.6 1 5.6 1 3.0 1 ND ND 5.6 1 14.8 1 4.5 1 ND ug/L 12/03/08 1.8 -- 50 ND 6.9 1 2.3 1 ND 3.0 1 5.4 1 3.1 1 2.4 1 ND 1 3.7 1 -- ND ND ug/L 04/15/09 0.6 -- 50 ND 2.4 1 1.2 1 0.7 1 1.4 1 3.6 1 1.4 1 ND ND 1 3.9 1 1.4 1 ND ND ug/L 10/07/09 1.8 -- 50 ND 4.44 1 ND ND ND 4.56 1 ND ND ND 6.74 1 -- ND ND ug/L 04/27/10 1.8 -- 50 ND 4.67 1 ND ND ND ND ND ND ND 3.52 1 ND ND ND ug/L 10/04/10 1.8 -- 50 ND ND ND ND ND 3.23 1 ND ND ND 3.53 1 -- ND ND ug/L O5/11/11 1.8 -- 50 ND 2.64 1 ND ND 1.83 1 3.03 1 ND ND ND 4.92 1 2.69 1 ND ND ug/L 10/11/11 1.8 -- 50 ND 2.89 1 ND ND 1.99 1 4.56 1 2.32 1 ND ND 7.43 1 -- ND ND ug/L 04/19/12 1.8 -- 50 ND 2.22 1 ND ND ND 2.79 1 ND ND ND 2.75 1 -- ND ND ug/L 10/22J12 1.8 -- 50 ND 2.21 1 ND ND ND 3.15 1 1.84 1 ND ND ND -- ND ND ug/L 04/23/13 1.8 -- 50 ND 2.89 1 ND ND ND 3.20 1 ND ND ND 2.72 1 -- ND ND ug/L 09/10/13 1.8 -- 50 ND 4.91 1 ND ND nd 2.23 1 ND ND ND 2.27 1 ND ND ND ug/L 04/23/14 1.8 -- 50 ND 3.17 1 ND ND 3.69 1 2.11 1 ND ND ND 2.16 1 ND ND ND ug/L 09/30/14 1.8 -- 50 ND 3.34 1 ND ND ND 2.46 1 ND ND ND 2.59 1 -- ND ND ug/L 04/13/15 1.8 -- 50 ND 2.53 1 ND ND ND ND ND ND ND 4.76 1 -- ND ND ug/L 10/05/15 1.8 -- 50 ND 3.02 1 ND ND 3.60 1 3.25 1 ND ND ND 2.92 1 ND ND ND ug/L 04/18/16 2.2 -- 50 ND 4.40 1 ND ND ND ND 2.75 1 ND ND 2.52 1 -- ND ND ug/L 09/27/16 2.2 -- 50 ND 3.98 1 ND ND ND ND 2.65 1 ND ND 3.25 1 ND -- ND ug/L 04/27/17 2.2 -- 50 ND 3.91 1 ND ND ND ND ND ND ND 5.62 1 ND ND ND ug/L 10/16/17 2.2 -- 50 ND ND ND ND ND 2.96 1 3.04 1 ND ND ND -- ND ND ug/L 04/16/18 2.2 -- 50 ND ND ND ND 2.28 1 2.37 1 2.40 1 ND ND 3.34 1 4.19 1 ND ND ug/L 10/16/18 2.2 10.0 -- ND 2.88 1 ND ND ND 3.53 1 3.15 1 ND ND 2.91 1 ND ND ND ug/L 04/12/19 2.2 10.0 -- ND 3.95 1 2.39 1 ND ND 4.28 1 3.40 1 ND ND 4.52 1 ND ND ND ug/L 10/08/19 2.2 10.0 -- ND 2.24 1 ND ND ND 4.60 1 4.21 1 ND ND ND 2.66 1 ND ND ug/L 04/20/20 2.2 10.0 -- ND 3.00 1 2.47 1 ND ND 3.50 1 4.20 1 ND ND ND ND ND ND ug/L 10/13/20 2.2 10.0 -- ND 2.86 1 ND ND ND 2.44 1 2.24 1 ND ND ND ND ND ND ug/L 04/27/21 2.2 10.0 -- ND 3.90 1 2.30 1 ND 7.62 1 3.99 1 4.08 1 ND ND 3.81 1 ND ND ND ug/L 10/12/21 2.2 10.0 -- ND 4.22 1 ND ND 15.5 4.97 1 3.86 1 ND ND ND ND ND ND u /L 04/19/22 2.2 10.0 ND 3.00 1 ND ND 20.5 2.43 1 ND ND ND ND ND ND ND W,J) GOLDER 5 of 11 August 2022 19131339.105 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41.12 Greensboro, North Carolina Method Practical SWS Upgradient Wells Downgradient Wells Detected Monitoring Reporting Sample MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit 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 09/23/99 -- -- 20 ND ND 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 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 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 ND ug/L 04/01/03 -- -- 20 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 20 ND ND 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 ND ND ug/L 04/27/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 20 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 2.0 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/07 2.0 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/01/08 2.0 -- 10 ND ND ND ND ND 2.1 1 ND ND ND ND ND ND ND ug/L 12/03/08 2.7 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/15/09 3.4 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/09 2.7 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/27/10 0.83 -- 10 ND 1.39 1 ND ND ND ND ND ND ND ND 3.06 1 ND ND ug/L 10/04/10 0.83 -- 10 ND ND ND ND ND ND ND ND ND 2.28 1 -- ND ND ug/L O5/11/11 0.83 -- 10 ND ND ND ND ND 1.68 1 ND 0.917 1 ND 4.05 1 ND ND ND ug/L 10/11/11 0.83 -- 10 ND ND ND ND ND 1.41 1 ND ND ND 3.20 1 -- ND ND ug/L 04/19/12 0.83 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/22J12 0.83 -- 10 ND ND ND ND ND ND ND ND ND 5.57 1 -- ND ND ug/L 04/23/13 0.83 -- 10 ND ND ND ND 0.987 1 ND ND ND ND ND -- ND ND ug/L 09/10/13 0.91 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 0.91 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 0.91 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 0.91 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 0.91 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/18/16 0.91 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 0.91 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 6.2 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/17 6.2 -- 10 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 ug/L 10/16/18 6.2 10.0 -- 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 ug/L 10/08/19 6.2 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 6.2 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 6.2 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 6.2 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/12/21 6.2 10.0 - ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/19/22 6.2 10.0 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 09/23/99 -- -- 10 ND ND 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 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 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 ND ug/L 04/01/03 -- -- 10 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 10 ND ND 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 ND ND ug/L 04/27/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 2.0 -- 10 ND ND ND ND ND ND 2.2 1 ND ND ND ND 2.6 1 ND ug/L 09/24/07 2.0 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/01/08 2.0 -- 10 ND 2.9 1 ND 3.0 1 ND ND 3.1 1 ND ND ND ND ND ND ug/L 12/03/08 1.9 -- 10 ND ND ND ND 2.1 1 2.9 1 2.2 1 2.0 1 ND 3.8 1 -- ND ND ug/L 04/15/09 1.0 -- 10 ND ND ND ND ND ND ND ND ND 1.5 1 ND ND ND ug/L 10/07/09 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/27/10 1.9 -- 10 ND ND ND ND ND ND ND 3.3 1 ND ND ND ND ND ug/L 10/04/10 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/11/11 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/11/11 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/19/12 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/22J12 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/23/13 1.9 -- 10 ND ND ND ND ND ND ND 2.26 1 ND ND -- 3.05 1 ND ug/L 09/10/13 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/18/16 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 1.9 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/17 1.9 -- 10 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 ug/L 10/16/18 1.9 10.0 -- 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 ug/L 10/08/19 1.9 10.0 -- 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 ug/L 10/13/20 1.9 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 1.9 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/12/21 1.9 10.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/19/22 1.9 10.0 ND ND ND ND ND ND ND ND ND ND ND ND ND W,J) GOLDER 6 of 11 August 2022 19131339.105 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41.12 Greensboro, North Carolina Method Practical SWS Upgradient Wells Downgradient Wells Detected Monitoring Reporting Sample MW-15 MW-16 MW-17 MW-118 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D ConstituentlParameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit Thallium ug/L 03/01/99 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND NC 2L = 2 ug/L ug/L 09/23/99 -- -- 10 ND ND 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 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 13 ND ND ND 12 ND 11 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 ND ug/L 04/01/03 -- -- 10 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 10 ND ND 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 13 ND ND ND 12 ND ND ND ND 10 ND ND ND ug/L 04/27/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 0.044 -- 5.5 ND 0.066 J ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/07 -- -- 5.5 0.073 J 0.052 J 0.069 J 0.058 J 0.049 J 0.05 J 0.057 J 0.048 J 0.047 J 0.048 J - 0.053 J ND ug/L O5/01/08 0.036 -- 5.5 ND 0.04 B ND ND ND ND ND ND ND ND ND ND -- ug/L 12/03/08 0.036 -- 5.5 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/15/09 0.036 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/09 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/27/10 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/04/10 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/11/11 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/11/11 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/19/12 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/22J12 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/23/13 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/10/13 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/18/16 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 0.11 -- 5.5 0.127 J 0.227 J 0.160 J 0.242 J 0.257 J 0.300 J 0.294 J 0.307 J 0.207 J 0.292 J 0.189 J 0.187 J ND ug/L 10/16/17 0.11 -- 5.5 0.153 J 0.278 J 0.317 J 0.381 J 0.531 J 0.525 J 0.509 J 0.354 J 0.237 J 0.352 (ND) J -- 0.182 (ND) J ND ug/L 04/16/18 0.11 -- 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.55 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/12/19 0.22 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/08/19 0.22 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 0.22 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 0.22 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 0.22 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/12/21 0.22 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/19/22 0.22 2.0 ND ND ND ND ND ND ND ND ND ND ND ND ND Vanadium ug/L 03/01/99 -- -- 40 ND ND ND ND ND ND ND ND ND ND ND ND ND NC 2L = 7 ug/L ug/L 09/23/99 -- -- 40 ND ND ND ND ND ND ND ND ND ND ND ND ND (No EPA MCL) ug/L 03/01/00 -- -- 40 ND ND ND ND ND 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 ND ND ug/L 03/01/01 -- -- 40 ND ND ND 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 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 ND ug/L 04/01/03 -- -- 40 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 40 ND ND 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 ND ND ug/L 04/27/06 -- -- 40 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 40 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 1.0 -- 25 ND 2.7 J 3.2 J 2.6 J 4.8 J 1.4 J 1.7 J ND ND ND 2.2 J 5.1 J ND ug/L 09/24/07 1.0 -- 25 ND ND 1.4 J 9.9 J 3.9 J 2.3 J ND ND ND ND -- 2.8 J ND ug/L O5/01/08 1.0 -- 25 ND 4.5 J 2.0 J 2.1 J 5.0 J 5.1 J 2.6 J ND ND ND 2.1 J 3.6 J ND ug/L 12/03/08 1.4 -- 25 ND ND 2.6 J 3.1 J 3.6 J 6.0 J 2.3 J ND ND 2.0 J -- 3.7 J ND ug/L 04/15/09 0.7 -- 25 0.8 J 2.1 J 3.0 J 2.5 J 4.7 J 5.7 J ND 1.0 J ND 3.8 J 0.8 J 3.2 J ND ug/L 10/07/09 1.4 -- 25 ND 2.06 J 2.31 J 2.48 J 5.42 J 6.8 J ND ND ND 6.31 J -- 4.00 J ND ug/L 04/27/10 1.4 -- 25 ND 1.97 J 2.07 J ND 3.95 J 5.12 J ND ND ND 5.54 J ND 3.60 J ND ug/L 10/04/10 1.4 -- 25 ND 1.63 J 2.36 J 1.83 J 4.04 J 5.31 J ND ND ND 1.61 J -- 3.52 J ND ug/L O5/11/11 1.4 -- 25 ND ND 2.36 J 1.92 J 7.24 J 6.25 J ND ND ND 5.54 J ND 3.6 J ND ug/L 10/11/11 1.4 -- 25 ND 2.14 J 2.46 J ND 5.38 J 5.58 J ND ND ND 2.10 J -- 3.67 J ND ug/L 04/19/12 1.4 -- 25 ND ND 1.79 J ND 5.48 J 5.56 J ND ND ND 2.87 J -- 3.43 J ND ug/L 10/22J12 1.4 -- 25 ND 2.02 J 2.21 J ND 4.20 J 6.72 J ND ND ND ND -- 3.55 J ND ug/L 04/23/13 1.4 -- 25 ND ND 2.29 J 1.77 J 4.39 J 6.54 J ND ND ND 2.34 J -- 3.68 J ND ug/L 09/10/13 1.4 -- 25 ND ND ND ND 3.78 J 6.07 J ND ND ND ND ND 3.10 J ND ug/L 04/23/14 1.4 -- 25 ND ND 1.82 J 4.06 J 4.43 J 5.36 J ND ND ND 1.50 J ND 2.56 J ND ug/L 09/30/14 1.4 -- 25 ND 2.06 J ND 2.06 J 4.99 J 3.92 J ND ND ND ND -- 2.88 J ND ug/L 04/13/15 1.4 -- 25 ND 2.54 J ND ND 2.90 J 4.34 J ND ND ND ND -- 1.94 J ND ug/L 10/05/15 1.4 -- 25 ND 5.38 J 2.56 J 2.47 J 7.70 J 3.60 J ND ND ND ND ND 3.58 J ND ug/L 04/18/16 1.4 -- 25 ND ND 2.06 J ND 4.00 J 5.18 J ND ND 2.59 J ND -- 3.21 J ND ug/L 09/27/16 1.4 -- 25 ND ND 1.76 J ND 4.71 J 5.51 J ND ND 1.59 J ND 3.11 J -- ND ug/L 04/27/17 1.4 -- 25 ND 1.68 J 1.71 J ND 4.06 J 6.45 J ND ND 2.75 J ND ND 2.92 J ND ug/L 10/16/17 1.4 -- 25 ND ND 2.18 J ND 4.90 J 6.66 J ND ND ND ND -- 3.31 J ND ug/L 04/16/18 1.4 -- 25 ND ND 1.75 J ND 4.64 J 6.47 J ND ND ND ND 1.61 J 2.94 J ND ug/L 10/16/18 1.4 10.0 -- ND ND 2.21 J ND 3.75 J 6.66 J ND ND ND ND 1.65 J 3.10 J ND ug/L 04/12/19 1.4 10.0 -- ND ND 2.26 J 1.40 J 4.49 J 5.19 J ND ND ND 1.40 J ND 3.42 J ND ug/L 10/08/19 1.4 10.0 -- ND ND 2.23 J 1.50 J 4.26 J 6.45 J ND ND ND 1.47 J 1.62 J 3.32 J ND ug/L 04/20/20 1.4 10.0 -- ND ND ND ND 3.79 J 4.71 J ND ND ND ND ND 2.79 J ND ug/L 10/13/20 1.4 10.0 -- ND ND ND ND 2.98 J 5.14 J ND ND ND ND ND 2.45 J ND ug/L 04/27/21 1.4 10.0 -- ND ND ND ND 3.34 J 5.64 J ND ND ND ND ND 2.72 J ND ug/L 10/12/21 1.4 10.0 -- ND ND ND ND 3.44 J 6.72 J ND ND ND ND ND 3.01 J ND u /L 04/19/22 1.4 10.0 ND ND ND ND 2.42 J 5.57 J ND ND ND ND ND 2.48 J ND W,J) GOLDER 7 of 11 August 2022 19131339.105 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41.12 Greensboro, North Carolina Method Practical SWS Upgradient Wells Downgradient Wells Detected Monitoring Reporting Sample MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit Zinc ug/L 03/01/99 -- -- 50 ND ND ND ND ND ND ND ND ND ND ND ND ND NC 2L = 1000 ug/L ug/L 09/23/99 -- -- 50 ND ND ND ND ND ND ND ND ND ND ND ND ND EPA MCL = 5000 ug/L ug/L 03/01/00 -- -- 50 ND ND ND 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 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 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 ND ug/L 04/01/03 -- -- 50 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 50 ND ND 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 ND ND ug/L 04/27/06 -- -- 50 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 50 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 1.0 -- 10 ND 1.5 1 ND ND ND ND ND 6.6 1 1.2 1 ND 3.1 1 ND ND ug/L 09/24/07 1.0 -- 10 ND 3.1 1 2.3 1 2.1 1 ND J ND 2.4 1 1.3 1 ND 1.5 1 -- ND ND ug/L O5/01/08 1.0 -- 10 ND 5.5 1 5.8 1 5.4 1 2.2 1 ND 2.5 1 ND J ND 1 154 2.7 1 ND ND ug/L 12/03/08 3.8 -- 10 ND 13.8 ND ND 7.5 1 ND 5.2 1 3.9 1 ND 9.0 1 -- ND ND ug/L 04/15/09 3.4 -- 10 4.2 1 6.2 1 6.4 1 ND 5.1 1 ND ND 3.5 1 ND 5.8 1 4.1 1 3.6 1 ND ug/L 10/07/09 3.8 -- 10 ND 6.4 1 3.96 1 8.55 1 5.22 1 7.32 1 17.5 ND ND 24.5 -- ND ND ug/L 04/27/10 3.8 -- 10 8.21 1 4.87 1 ND ND 5.22 1 ND 9.83 1 4.47 1 ND 8.38 1 11.4 ND ND ug/L 10/04/10 3.8 -- 10 3.93 1 ND 7.98 1 ND ND ND ND ND ND 4.78 1 -- ND ND ug/L O5/11/11 3.8 -- 10 ND 4.10 1 4.37 1 4.28 1 5.98 1 ND ND ND ND 171 4.99 1 ND ND ug/L 10/11/11 3.8 -- 10 ND ND ND ND 6.51 1 ND ND ND ND 40.0 -- ND ND ug/L 04/19/12 3.8 -- 10 ND ND ND ND ND ND ND ND ND 14.8 -- ND ND ug/L 10/22J12 3.8 -- 10 ND 7.57 1 ND ND ND ND ND ND ND ND -- ND ND ug/L 04/23/13 3.8 -- 10 4.49 1 ND ND ND ND ND ND 4.08 1 ND 9.38 1 -- ND ND ug/L 09/10/13 3.8 -- 10 ND 5.74 1 ND ND ND ND 4.52 1 4.20 1 ND ND ND ND ND ug/L 04/23/14 3.8 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 3.8 -- 10 ND 8.59 1 ND ND 5.49 1 ND ND ND ND 4.39 1 -- ND ND ug/L 04/13/15 3.8 -- 10 ND 6.67 1 ND ND 5.16 1 ND ND ND ND 5.88 1 -- ND ND ug/L 10/05/15 3.8 -- 10 ND ND ND ND 9.54 1 ND ND ND ND 6.68 1 ND ND ND ug/L 04/18/16 4.4 -- 10 ND 6.11 1 ND ND 12.8 ND 7.69 1 ND ND ND - 4.63 1 ND ug/L 09/27/16 4.4 -- 10 6.64 1 21.2 13.6 12.8 10.7 6.23 1 18.5 26.2 ND 8.19 1 19.0 -- ND ug/L 04/27/17 4.4 -- 10 12.3 20.6 5.71 1 ND 9.47 1 ND ND ND ND 5.58 1 5.47 1 ND ND ug/L 10/16/17 4.4 -- 10 ND 7.25 1 ND ND 4.40 1 ND ND ND ND ND -- ND ND ug/L 04/16/18 4.4 -- 10 ND 5.80 1 ND ND 6.72 1 ND ND ND ND 9.27 1 4.67 1 ND ND ug/L 10/16/18 4.4 10.0 -- ND ND 8.51 1 ND ND 6.61 1 ND ND ND 9.52 1 ND ND ND ug/L 04/12/19 4.4 10.0 -- ND ND ND ND 5.66 1 ND ND 12.1 ND 13.7 ND ND ND ug/L 10/08/19 4.4 10.0 -- ND 6.20 1 ND ND ND 4.49 1 4.42 1 16.4 ND 6.36 1 ND ND ND ug/L 04/20/20 4.4 10.0 -- ND ND ND ND 5.07 1 ND ND 125 ND ND ND ND ND ug/L 10/13/20 4.4 10.0 -- ND 5.03 1 ND ND ND ND ND 38.0 ND 7.25 1 ND ND ND ug/L 04/27/21 4.4 10.0 -- ND ND ND ND ND ND ND 305 ND 8.77 1 ND ND ND ug/L 10/12/21 4.4 10.0 -- ND ND ND ND ND ND ND 30.1 ND 4.92 1 ND ND ND u /L 04/19/22 4.4 10.0 ND ND ND ND ND ND ND 26.1 ND 5.06 1 ND ND ND 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 09/23/99 -- -- 100 ND ND 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 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 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 ND ug/L 04/01/03 -- -- 100 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 100 ND ND 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 ND ND ug/L 04/27/06 -- -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 0.9 -- 100 1.3 1 ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/07 0.9 -- 100 2.0 1 ND ND ND ND ND ND 5.0 1 ND ND -- ND ND ug/L O5/01/08 0.62 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 12/03/08 1.5 -- 100 ND ND ND ND ND ND 8.6 1 9.6 1 11 1 7.7 1 -- ND ND ug/L 04/15/09 1.5 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/09 1.5 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/27/10 1.5 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/04/10 1.5 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/11/11 1.2 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/11/11 1.2 -- 100 ND ND ND ND ND ND ND 6.8 1 ND ND -- ND ND ug/L 04/19/12 1.2 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/22J12 1.2 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/23/13 1.2 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/10/13 1.2 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 1.2 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 1.2 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 1.2 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 1.2 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/18/16 1.2 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 10 -- 100 ND ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 10 -- 100 20 B 18 B 18 B 33 B 20 B 13 B 16 B 17 B 25 B 19 B 21 B 15 B 20 ug/L 10/16/17 10 -- 100 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 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 ug/L 04/12/19 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/08/19 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND 18 1 ug/L 10/12/21 10 20 -- ND ND ND ND ND ND ND ND ND ND ND ND 26 u /L 04/19/22 10 20 ND ND ND ND ND ND ND ND ND ND ND ND ND W,J) GOLDER 8 of 11 August 2022 19131339.105 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41.12 Greensboro, North Carolina Method Practical SWS Upgradient Wells Downgradient Wells Detected Monitoring Reporting Sample MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit Dibromochloromethane ug/L 03/01/99 -- -- 5 ND ND ND ND ND ND ND ND ND ND ND ND -- NC 2L = 0.4 ug/L ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND ND ND ND ND ND ND -- EPA MCL = 80 ug/L ug/L 09/01/00 -- -- 5 ND 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 -- ug/L 09/01/01 -- -- 5 ND 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 -- ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ND ND ND ND -- ND -- ug/L 04/01/03 -- -- 5 ND 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 ND -- ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 5 ND 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 -- ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 04/27/06 -- -- 5 ND 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 ND -- ug/L 04/09/07 0.18 -- 3 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/07 0.18 -- 3 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/01/08 0.28 -- 3 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 12/03/08 0.32 -- 3 ND ND ND ND ND ND ND ND ND ND -- ND -- ug/L 04/15/09 0.32 -- 3 ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/09 0.32 -- 3 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/27/10 0.067 -- 3 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/04/10 0.32 -- 3 ND ND ND ND ND ND ND ND ND ND -- ND -- ug/L O5/11/11 0.63 -- 3 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/11/11 0.63 -- 3 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/19/12 0.17 -- 3 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/22J12 0.17 -- 3 ND ND ND ND ND ND ND ND ND 7.69 J -- ND ND ug/L 04/23/13 0.17 -- 3 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/10/13 0.17 -- 3 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 0.17 -- 3 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 0.17 -- 3 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 0.17 -- 3 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 0.17 -- 3 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/18/16 0.17 -- 3 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 0.17 -- 3 ND ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 0.17 -- 3 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/17 0.17 -- 3 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/16/18 0.17 -- 3 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/18 0.17 -- -- 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 ug/L 10/08/19 0.17 1.0 -- ND ND ND ND ND 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 ug/L 10/13/20 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/12/21 0.17 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/19/22 0.17 1.0 ND ND ND ND ND ND ND ND ND ND ND ND ND Bromomethane ug/L 03/01/99 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- NC 2L = 10 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- (No EPA MCL) ug/L 09/01/00 -- -- 10 ND 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 -- ug/L 09/01/01 -- -- 10 ND 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 -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ND ND ND ND -- ND -- ug/L 04/01/03 -- -- 10 ND 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 ND -- ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 10 ND 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 -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 04/27/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 04/09/07 0.21 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/07 0.21 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/01/08 0.49 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 12/03/08 0.49 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND -- ug/L 04/15/09 0.49 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/09 0.49 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/27/10 0.28 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/04/10 0.49 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND -- ug/L O5/11/11 0.58 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/11/11 0.58 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/19/12 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/22J12 0.14 -- 10 ND ND ND ND ND ND ND ND ND 4.88 1 -- ND ND ug/L 04/23/13 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/10/13 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/18/16 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 0.14 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/17 0.14 -- 10 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 ug/L 10/16/18 0.14 -- -- 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 ug/L 10/08/19 0.14 1.0 -- 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 ug/L 10/13/20 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/12/21 0.14 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/19/22 0.14 1.0 ND ND ND ND ND ND ND ND ND ND ND ND ND W,J) GOLDER 9 of 11 August 2022 19131339.105 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41.12 Greensboro, North Carolina Method Practical SWS Upgradient Wells Downgradient Wells Detected Monitoring Reporting Sample MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit 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 09/23/99 -- -- 10 ND ND 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 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 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 ND ug/L 04/01/03 -- -- 10 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 10 ND ND 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 ND ND ug/L 04/27/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 0.18 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/07 0.18 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/01/08 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 12/03/08 0.34 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/15/09 0.34 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/09 0.34 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/27/10 0.05 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/04/10 0.34 -- 1 ND ND ND 0.61 B 0.65 B ND ND ND ND ND -- ND ND ug/L O5/11/11 0.55 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/11/11 0.55 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/19/12 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/22J12 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/23/13 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/10/13 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/18/16 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 0.13 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 0.13 -- 1 0.48 1 ND 0.42 1 0.63 1 ND ND ND 0.47 1 0.60 1 0.44 1 0.49 1 ND ND ug/L 10/16/17 0.13 -- 1 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 ug/L 10/16/18 0.13 1.0 -- 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 ug/L 10/08/19 0.13 1.0 -- 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 ug/L 10/13/20 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/12/21 0.13 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/19/22 0.13 1.0 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 -- NC 2L = 5 ug/L ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- EPA MCL = 5 ug/L ug/L 09/01/00 -- -- 10 ND 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 -- ug/L 09/01/01 -- -- 10 ND 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 -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ND ND ND ND -- ND -- ug/L 04/01/03 -- -- 10 ND 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 ND -- ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 10 ND 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 -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 04/27/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 04/09/07 0.088 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/07 0.088 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/01/08 0.24 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 12/03/08 0.53 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND -- ug/L 04/15/09 0.53 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND -- ug/L 10/07/09 0.53 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/27/10 0.07 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/04/10 0.53 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND -- ug/L O5/11/11 0.14 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/11/11 0.14 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/19/12 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/22J12 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/23/13 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/10/13 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/18/16 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 0.23 -- 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/17 0.23 -- 1 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 ug/L 10/16/18 0.23 -- -- 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 0.52 1 ND ND ND ND ug/L 10/08/19 0.23 1.0 -- 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 ug/L 10/13/20 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/12/21 0.23 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/19/22 0.23 1.0 ND ND ND ND ND ND ND ND ND ND ND ND ND W,J) GOLDER 10 of 11 August 2022 19131339.105 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41.12 Greensboro, North Carolina Detected Monitoring Reporting Sample Method Detection Practical Quantitation SWS Reporting Upgradient Wells Downgradient Wells Blanks Constituent/Parameter Units Date Limit Limit Limit MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D 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 09/23/99 -- -- 100 ND ND 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 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 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 ND ug/L 04/01/03 -- -- 100 ND ND 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 ND ND ug/L 04/01/04 -- -- -- -- __ ug/L 09/01/04 -- -- 100 ND ND 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 ND ND ug/L 04/27/06 -- -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/01/06 -- -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/09/07 0.56 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/24/07 0.56 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/01/08 0.44 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 12/03/08 1.0 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/15/09 1.0 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/07/09 1.0 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/27/10 1.0 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/04/10 1.0 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L O5/11/11 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/11/11 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/19/12 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/22J12 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/23/13 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/10/13 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/23/14 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 09/30/14 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 04/13/15 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 10/05/15 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/18/16 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND -- ND ND ug/L 09/27/16 1.3 -- 100 17 J ND ND ND ND ND ND ND ND ND ND -- ND ug/L 04/27/17 1.3 -- 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/16/17 1.3 -- 100 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 ug/L 10/16/18 1.3 5.0 -- 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 ug/L 10/08/19 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/20/20 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/13/20 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 04/27/21 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 10/12/21 1.3 5.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND u /L 04/19/22 1.3 5.0 ND ND ND ND ND ND ND ND ND ND ND ND ND 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 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 values between MDL and PQL. B = blank -qualified data ND = not detected above the laboratory detection limit -- = no data or no limit established "= EPA Action Level EPA Secondary MCL () = result of re -analysis of sample 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 SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on 01/18/07 Approved SGPS = site -specific groundwater protection standard calculated by the NC DEQ in November 13, 2020 correspondence Proposed SGPS = site -specific groundwater protection standard proposed by Golder in February 12, 2021 correspondence Data prior to April 2017 provided by S&ME Engineering The following dilutions were noted for the April 2022 event: antimony & thallium by 2X (all points). W,J) GOLDER 11 of 11 August 2022 19131339.105 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Monitoring Reporting Sample Upgradient Wells Downgradient Wells Constituent/Parameter Units Date MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D pH (Field) S.U. 03/25/99 7.17 5.92 6.88 6.23 6.07 6.17 6.81 6.34 6.59 6.82 6.31 6.23 S.U. 03/25/99 6.78 5.92 5.69 5.76 5.9 6.42 5.55 6.09 6.92 6.67 5.66 6.03 S.U. 09/23/99 6.32 6.09 6.63 6.19 6.59 6.41 6.62 6.29 6.67 6.69 6.79 7.63 S.U. 03/29/00 6.27 6.83 6.51 6.47 6.47 6.40 6.44 7.53 7.11 6.65 7.55 6.76 S.U. 09/14/00 6.88 6.62 6.85 6.56 6.56 6.70 6.87 6.90 6.76 7.13 6.75 6.74 S.U. 03/12/01 7.02 5.94 6.04 5.76 5.99 6.40 6.05 7.16 7.32 6.80 6.25 6.26 S.U. 09/13/01 6.68 5.86 5.94 5.66 5.95 6.08 6.15 6.65 7.18 6.66 6.25 6.24 S.U. 03/08/02 6.67 6.06 6.03 5.77 6.04 6.35 6.52 6.95 7.09 7.22 6.52 6.79 S.U. 09/18/02 6.67 6.11 5.91 5.77 6.03 6.21 6.38 6.77 6.66 6.87 -- 6.31 S.U. 10/16/03 7.35 6.02 6.07 5.97 6.13 6.42 5.95 6.10 7.50 6.67 6.33 6.40 S.U. 03/24/04 6.97 6.12 6.15 5.94 6.38 6.45 6.32 7.01 7.79 6.84 6.31 6.40 S.U. 09/22/04 7.48 6.55 6.56 6.39 6.66 6.83 6.47 7.49 7.83 7.09 6.53 6.87 S.U. 05/11/05 8.98 8.40 8.36 8.43 8.84 8.58 8.60 8.86 9.39 8.99 8.78 8.90 S.U. 10/11/05 6.98 5.79 5.77 5.61 5.69 6.30 5.68 6.38 7.21 6.47 5.76 5.91 S.U. 10/16/06 7.13 5.76 5.61 5.79 5.78 6.07 5.62 6.32 7.27 6.54 5.98 6.01 S.U. 04/09/07 7.05 5.82 5.70 5.76 5.82 6.18 5.60 6.55 7.41 6.56 5.86 6.02 S.U. 09/27/07 7.04 5.82 5.72 5.74 5.82 6.09 5.66 6.55 7.41 6.57 DRY 6.02 S.U. 05/01/08 7.28 5.94 5.75 5.95 5.85 6.22 5.68 6.57 7.49 6.68 5.71 5.92 S.U. 12/03/08 7.18 6.03 5.81 6.25 6.09 6.35 5.83 6.40 7.43 6.69 -- 6.07 S.U. 04/15/09 7.88 6.59 6.51 6.64 6.55 6.96 6.52 7.42 7.96 7.30 6.42 6.79 S.U. 10/09/09 9.59 8.38 8.02 8.46 8.25 8.40 8.03 8.85 9.78 8.89 -- 8.62 S.U. 04/27/10 7.21 5.89 5.83 5.79 5.98 6.33 5.82 6.54 7.35 6.55 5.95 6.20 S.U. 10/05/10 8.01 6.88 6.70 11.24 6.78 7.20 6.69 7.24 8.27 7.26 6.78 7.11 S.U. 05/11/11 8.89 7.76 7.72 7.81 7.91 8.26 7.47 8.21 8.96 8.51 7.87 8.07 S.U. 10/05/11 7.96 6.45 6.09 6.29 6.43 6.83 5.93 6.61 8.16 7.34 7.87 6.51 S.U. 04/19/12 8.30 6.96 6.73 7.27 6.94 7.64 6.56 7.32 8.48 7.75 -- 7.21 S.U. 10/22/12 8.78 7.21 6.79 6.95 7.04 7.81 6.81 7.75 8.99 8.32 -- 7.18 S.U. 04/23/13 8.86 7.13 6.90 7.36 7.21 8.10 6.96 7.63 8.97 8.33 -- 7.22 S.U. 09/10/13 8.87 7.26 6.91 7.19 7.03 7.66 6.84 7.45 8.90 8.09 -- 7.38 S.U. 04/21/14 8.83 6.71 6.36 5.83 6.73 6.93 6.36 6.59 7.34 7.53 6.07 6.00 S.U. 09/30/14 7.50 6.19 6.13 6.24 6.54 6.75 6.14 6.52 7.56 6.91 -- 6.59 S.U. 04/13/15 7.26 5.89 5.88 5.96 6.02 6.53 5.83 6.37 7.42 6.69 -- 6.08 S.U. 10/05/15 6.93 5.82 5.57 5.75 5.84 6.25 5.59 5.88 6.98 6.56 5.60 5.86 S.U. 04/18/16 7.24 6.01 5.94 6.08 6.18 6.50 5.86 6.37 7.35 6.89 -- 6.35 S.U. 09/27/16 7.05 5.58 5.01 6.02 5.77 6.41 5.77 5.96 7.28 6.67 -- 5.87 S.U. 04/25/17 7.07 5.93 5.64 5.61 5.77 6.42 5.61 6.16 7.35 6.63 5.92 5.88 S.U. 10/16/17 6.84 5.77 5.65 5.81 5.90 6.40 5.48 6.10 6.89 6.58 -- 5.82 S.U. 04/16/18 6.80 5.81 5.75 5.71 5.91 6.39 5.62 6.36 7.05 6.75 5.77 5.92 S.U. 10/16/18 6.78 5.92 5.69 5.76 5.90 6.42 5.55 6.09 6.92 6.67 5.66 6.03 S.U. 04/09/19 6.83 5.91 5.82 5.67 6.16 6.29 5.78 6.55 7.27 6.76 5.84 5.97 S.U. 10/08/19 7.93 5.96 5.85 5.89 6.01 6.46 5.67 6.15 6.90 6.58 5.92 6.03 S.U. 04/20/20 6.75 5.84 5.59 5.71 5.92 6.25 5.50 6.07 7.07 6.74 5.95 5.97 S.U. 10/13/20 6.69 5.59 5.43 5.37 5.82 5.85 5.48 5.79 6.95 6.84 5.61 5.60 S.U. 04/27/21 6.99 6.03 5.97 5.87 6.02 6.49 5.99 6.49 7.52 7.11 6.09 6.14 S.U. 10/12/21 6.54 5.54 5.26 5.46 5.43 6.25 5.31 5.80 6.82 6.58 5.48 5.31 S.U. 04/19/22 7.69 5.86 5.74 5.58 6.85 7.27 5.56 6.94 7.07 6.84 6.89 7.00 Specific Conductance (Field) us/cm 03/25/99 356 175 110 140 122 350 70 338 469 332 106 95 us/cm 03/25/99 262.9 171 153.9 139.7 360.9 553 210.9 383.1 490.7 744 110.2 105.2 us/cm 09/23/99 287 155 99 116 101 292 59 294 464 278 94 78 us/cm 03/29/00 138 190 92 121 109 168 56 240 443 212 104 77 us/cm 09/14/00 320 240 110 102 117 192 63 251 454 269 80 111 us/cm 03/12/01 6488 6751 8281 9640 7728 6566 9255 ND 5897 7625 9345 9072 us/cm 09/13/01 185978 178455 146239 141483 187143 145559 169453 94740 147636 83218 172073 169709 us/cm 03/08/02 610 540 275 270 351 526 241 444 700 514 289 273 us/cm 09/18/02 567 485 233 235 303 439 178 394 669 497 -- 202 us/cm 10/16/03 418 496 160 144 181 435 95 94 523 415 150 110 us/cm 03/24/04 374 392 128 93 162 245 81 233 481 320 160 102 us/cm 09/22/04 422 428 172 141 188 477 107 382 534 565 182 111 us/cm 05/11/05 419 422 178 136 164 527 112 363 5250 6330 157 109 us/cm 10/11/05 469 359 247 173 185 486 126 312 571 826 140 123 us/cm 10/16/06 469 372 190 189 199 68 143 328 572 1004 151 125 us/cm 04/09/07 448 424 195 180 201 653 162 391 572 1031 227 126 us/cm 09/27/07 442 420 184 176 201 645 162 391 572 1025 DRY 126 us/cm 05/01/08 19 19 44 32 29.1 59.6 16.9 42.4 56.3 120 14.4 15.2 us/cm 12/03/08 436 331 182 222 297 667 167 352 581 1187 -- 134 us/cm 04/15/09 432 317 184 252 296 664 161 525 566 1181 151 166 us/cm 10/09/09 422 322 182 191 212 769 178 441 573 1208 -- 132 us/cm 04/27/10 343 297 153 150 200 638 159 428 465 971 141 111 us/cm 10/05/10 334 271 154 168 191 573 160 362 475 978 191 107 us/cm 05/11/11 346 281 154 161 190 716 164 402 463 949 131 120 us/cm 10/05/11 329 228 150 143 248 626 164 337 464 957 131 122 us/cm 04/19/12 345 267 147 188 193 683 166 350 462 919 -- 113 us/cm 10/22/12 341 236 151 32 251 813 161 402 462 920 -- 111 us/cm 04/23/13 333 262 151 172 214 712 164 376 459 885 -- 111 us/cm 09/10/13 332 266 151 182 216 612 178 454 457 923 -- 117 us/cm 04/21/14 347 277 161 166 446 567 177 507 465 879 65 158 us/cm 09/30/14 331 229 163 173 266 495 193 496 498 95 -- 116 us/cm 04/13/15 216 172 116 96 260 405 123 274 305 586 -- 98 us/cm 10/05/15 318 186 135 129 386 330 161 288 350 721 101 101 us/cm 04/18/16 215 198 130 138 256 392 164 354 370 678 -- 113 us/cm 09/27/16 234 163 119 144 166 350 169 272 366 730 -- 86 us/cm 04/25/17 289 203 171 125 384 562 222 343 421 788 108 123 us/cm 10/16/17 330 210 160 159 239 553 228 422 568 833 -- 115 us/cm 04/16/18 324 222 175 129 492 654 249 520 583 853 139 152 us/cm 10/16/18 263 171 154 140 361 553 211 383 491 744 110 105 us/cm 04/09/19 320 261 178 127 313 575 232 448 525 757 116 143 us/cm 10/08/19 463 314 238 153 222 533 252 391 575 871 126 117 us/cm 04/20/20 366 194 154 135 254 639 282 443 648 927 94 113 us/cm 10/13/20 379 245 176 149 384 584 285 370 574 921 105 130 us/cm 04/27/21 336 287 215 188 344 666 245 393 565 830 140 158 us/cm 10/12/21 289 246 166 165 243 465 202 331 510 745 125 109 us/cm 04/19/22 176 298 181 131 333 524 231 389 554 838 109 113 ►1%11 GGLDEA 1 of3 August 2022 19131339.105 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Monitoring Reporting Sample Upgradient Wells Downgradient Wells Constituent/Parameter Units Date MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D Temperature (Field) °C 03/25/99 14.57 15.19 14.59 14.87 15.51 14.84 12.79 14.25 12.83 10.68 13.41 14.64 °C 03/25/99 15.9 17.2 18.6 18.2 18.4 17.8 18.6 17.1 17 19.8 18.7 17.3 °C 09/23/99 15.35 16.23 16.68 18.87 16.63 16.86 18.08 16.36 15.81 18.77 17.86 15.60 °C 03/29/00 14.63 14.76 13.88 12.00 15.12 13.10 12.53 14.03 14.34 11.76 12.31 13.55 °C 09/14/00 16.17 16.37 16.50 18.96 17.16 17.10 18.28 16.50 15.76 18.60 16.53 19.71 °C 03/12/01 15.54 16.01 14.77 11.66 15.56 14.56 12.53 14.72 15.35 10.35 12.84 14.81 °C 09/13/01 17.05 17.17 17.53 19.26 17.16 16.52 18.45 16.58 16.21 19.35 19.20 17.61 °C 03/08/02 14.96 15.15 14.75 11.86 15.21 13.80 11.73 13.75 14.44 9.31 13.63 14.29 °C 09/18/02 12.62 13.68 10.50 11.33 12.79 11.83 12.94 11.16 10.92 14.00 -- 11.15 °C 10/16/03 15.00 15.78 16.67 17.33 16.61 15.28 16.67 16.28 14.56 15.38 17.56 15.61 °C 03/24/04 15.48 14.19 15.04 12.71 15.02 13.93 12.67 13.84 14.07 10.99 12.98 14.30 °C 09/22/04 14.67 15.33 16.56 18.45 16.45 16.33 17.83 15.67 14.83 18.06 19.67 15.72 °C 05/11/05 21.59 23.68 23.25 22.56 14.91 20.20 20.35 24.03 21.20 21.54 19.30 18.07 °C 10/11/05 17.40 18.30 20.20 19.80 17.10 19.50 19.70 18.90 16.60 19.30 14.30 14.20 °C 10/16/06 14.82 16.01 17.23 16.73 19.25 18.01 21.27 19.93 20.31 20.05 18.56 17.76 °C 04/09/07 14.61 14.11 14.04 9.51 13.87 13.02 12.46 15.75 15.41 13.59 15.01 14.60 °C 09/27/07 22.01 26.06 25.11 25.79 23.70 18.84 20.30 24.51 22.72 22.37 DRY 14.60 °C 05/01/08 19.34 20.08 18.18 14.52 13.51 17.79 18.50 22.49 19.49 20.00 15.39 17.10 °C 12/03/08 12.06 12.80 9.66 12.08 12.36 13.96 14.18 15.33 13.51 8.06 -- 10.11 °C 04/15/09 14.96 13.93 11.31 11.31 13.98 13.90 14.76 16.15 15.21 13.93 13.74 14.14 °C 10/09/09 14.30 13.78 18.60 15.22 23.45 21.39 25.02 15.04 15.05 16.17 -- 15.34 °C 04/27/10 13.60 12.69 15.27 12.63 14.42 14.93 14.36 15.46 14.57 14.50 15.10 15.64 °C 10/05/10 15.66 16.28 16.54 15.83 17.26 17.85 21.04 19.01 17.16 17.76 17.26 20.42 °C 05/11/11 18.09 18.24 18.18 15.89 16.67 17.94 15.91 15.32 15.80 15.62 16.09 16.30 °C 10/05/11 14.02 16.35 22.55 18.75 15.14 17.37 20.54 20.35 20.64 14.73 16.09 19.25 °C 04/19/12 14.24 13.43 16.89 14.75 18.32 16.93 20.47 15.97 15.75 14.70 -- 17.58 °C 10/22/12 16.40 19.43 22.77 18.03 21.73 20.05 20.67 12.72 14.59 18.12 -- 22.24 °C 04/23/13 13.56 15.85 19.78 15.47 13.06 14.52 17.29 19.95 17.05 11.96 -- 15.21 °C 09/10/13 19.33 22.50 25.85 22.81 23.86 20.09 22.01 33.37 18.01 20.46 -- 23.82 °C 04/21/14 18.07 15.80 17.87 15.60 19.72 19.18 20.21 19.40 16.64 11.24 19.68 19.31 °C 09/30/14 19.83 19.06 16.39 16.58 17.02 17.14 19.53 21.20 23.49 26.93 -- 17.11 °C 04/13/15 16.22 15.96 21.86 16.28 18.52 16.08 15.78 16.10 16.29 16.37 -- 18.95 °C 10/05/15 16.84 19.48 21.11 18.92 16.20 18.29 19.57 17.20 14.02 15.36 17.20 16.83 °C 04/18/16 14.57 21.13 24.00 22.30 21.89 20.59 23.00 23.88 22.76 20.59 -- 25.30 °C 09/27/16 18.94 19.50 18.86 20.92 18.25 18.80 22.91 22.42 22.84 23.64 -- 18.69 °C 04/25/17 16.49 15.83 16.18 13.58 17.28 16.03 15.72 15.66 15.36 15.46 19.61 16.96 °C 10/16/17 15.31 17.02 18.22 17.37 18.29 17.19 18.26 16.97 16.89 18.08 -- 17.19 °C 04/16/18 14.2 13.6 13.6 11.9 13.1 11.4 11.5 16.0 14.1 13.1 11.5 14.2 °C 10/16/18 15.9 17.2 18.6 18.2 18.4 17.8 18.6 17.1 17.0 19.8 18.7 17.3 °C 04/09/19 15.0 15.2 14.6 14.5 16.5 14.9 15.0 16.2 14.9 14.0 15.2 15.3 °C 10/08/19 17.1 16.6 17.4 17.8 17.9 16.9 18.8 16.8 17.2 19.8 18.5 17.3 °C 04/20/20 13.9 16.3 13.3 13.6 15.4 15.0 13.9 14.4 14.8 13.6 13.1 15.0 °C 10/13/20 16.2 17.7 18.0 18.1 18.7 17.1 18.4 16.9 17.0 18.3 19.2 18.8 °C 04/27/21 14.6 16.4 15.1 14.3 16.9 14.9 14.2 15.6 15.9 15.2 16.5 15.8 °C 10/12/21 15.2 17.7 16.8 17.5 18.1 19.1 18.4 17.6 16.5 18.8 19.2 17.4 °C1 04/19/22 13.8 15.3 14.8 14.0 16.3 14.8 14.1 16.4 14.7 15.9 14.3 15.3 Turbidity (Field) NTU 05/11/05 3.04 3.15 5.69 67.20 8.83 0.89 3.40 110 1.42 5.29 1.87 1.33 NTU 05/11/05 0.35 6.11 1.3 2.67 3.07 9.67 1.28 8.61 1.73 2.4 2.65 2.01 NTU 10/11/05 2.70 7.40 6.00 82 14 1.60 3.00 4.00 2.00 2.50 5.50 2.20 NTU 10/16/06 2.26 4.10 4.40 258 4.20 1.00 2.00 12 1.09 8.00 2.00 2.00 NTU 04/27/10 4.57 10.32 4.04 8.09 4.16 2.78 6.70 352 4.48 17.01 3.41 3.45 NTU 10/05/10 6.17 5.28 5.38 8.99 4.47 3.61 5.45 7.57 4.78 5.37 4.47 4.40 NTU 05/11/11 7.94 7.34 6.89 8.56 14.98 6.23 5.61 31.00 5.11 6.97 8.94 8.03 NTU 10/05/11 7.96 8.27 7.98 7.38 19.60 5.86 6.97 9.56 6.40 8.37 8.94 6.12 NTU 04/19/12 5.04 4.86 4.93 5.95 7.95 4.07 4.74 12.26 4.22 4.37 -- 4.61 NTU 10/22/12 7.70 8.32 8.38 7.45 8.14 6.31 7.35 11.12 7.41 8.33 -- 7.06 NTU 04/23/13 5.73 6.59 5.31 6.30 6.00 5.09 6.52 25.20 5.28 5.17 -- 5.76 NTU 09/10/13 3.87 4.84 4.05 5.13 5.68 3.80 4.29 6.44 6.04 6.74 -- 4.57 NTU 04/21/14 7.13 5.62 4.57 12.01 6.25 4.61 4.29 16.23 4.39 5.97 4.65 4.17 NTU 09/30/14 5.89 4.85 4.88 6.56 7.81 4.27 4.48 8.75 4.58 5.56 -- 4.72 NTU 04/13/15 4.70 5.28 5.52 5.13 7.10 3.84 5.17 11.87 3.97 4.72 -- 4.53 NTU 10/05/15 3.71 5.91 2.14 5.77 52 1.09 1.68 6.59 1.08 2.31 2.65 0.71 NTU 04/18/16 3.17 3.63 2.35 0.65 5.96 0.31 0.74 23 1.14 0.95 -- 0.84 NTU 09/27/16 1.44 5.23 1.35 1.91 3.51 1.26 1.65 1.80 1.35 2.00 -- 0.49 NTU 04/25/17 12.1 6.40 1.42 6.26 7.28 1.55 1.72 7.89 12.0 0.68 5.16 0.87 NTU 10/16/17 0.48 2.28 1.07 0.66 6.34 0.67 1.74 5.34 2.41 3.87 - 0.27 NTU 04/16/18 0.93 6.61 5.65 8.73 5.30 4.24 5.82 6.73 1.25 5.03 6.59 1.46 NTU 10/16/18 0.35 6.11 1.30 2.67 3.07 9.67 1.28 8.61 1.73 2.40 2.65 2.01 NTU 04/09/19 1.18 7.03 3.59 6.90 2.60 1.78 0.41 4.55 0.99 0.50 8.88 1.70 NTU 10/08/19 0.59 2.91 1.12 0.60 3.58 2.59 0.86 8.71 2.24 1.66 5.03 0.39 NTU 04/20/20 0.93 7.67 0.25 0.74 6.52 1.92 0.68 6.72 1.07 2.43 1.68 0.42 NTU 10/13/20 1.29 4.36 0.71 6.01 2.99 1.62 1.15 3.88 1.35 1.80 8.14 0.49 NTU 04/27/21 1.16 4.93 0.55 0.69 4.88 2.54 1.01 8.51 1.32 1.54 1.32 0.49 NTU 10/12/21 2.33 3.04 0.45 0.80 1.96 6.42 1.96 7.44 2.54 3.24 2.37 0.94 NTU 04/19/22 2.78 3.27 1.98 5.63 6.12 2.75 0.34 9.79 0.51 3.52 3.51 2.02 "%I) GGLDEA 2 of3 August 2022 19131339.105 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Monitoring Reporting Sample Upgradient Wells Downgradient Wells Constituent/Parameter Units Date MW-15 MW-16 MW-17 MW-18 MW-19 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-25D Oxidation Reduction Potential (Field) my 05/11/05 -197 -63 9 14 -168 -155 -69 -92 -112 -51 -91 -130 my 05/11/05 13.5 106.6 147.2 145.3 166.4 86.8 208.7 18.8 -75.4 -53.4 194.2 108.3 my 10/11/05 -29 126 224 222 164 154 163 60 50 136 198 203 my 10/16/06 -169 -183 -98 -97 -138 -78 46 -173 -210 -182 -85 -98 my 04/27/10 77 335 380 394 374 348 368 89 81 275 370 356 my 10/05/10 82 80 341 304 291 263 311 109 49 205 291 250 my 05/11/11 -3 124 293 240 280 226 327 112 74 204 285 269 my 10/05/11 16 110 262 240 240 213 276 73 -15 84 285 217 my 04/19/12 -20 51 238 151 233 185 227 82 0 88 -- 201 my 10/22/12 -24 158 229 215 162 47 193 43 -35 81 -- 158 my 04/23/13 -38 101 211 153 200 149 220 59 -4 197 -- 180 my 09/10/13 -51 42 179 148 177 165 237 8 -60 -12 -- 169 my 04/21/14 -21 110 201 218 229 213 258 118 239 218 269 274 my 09/30/14 -36 117 217 189 186 148 140 -72 -79 -135 -- 182 my 04/13/15 -47 81 63 51 55 50 69 1.7 -32 56 -- 74 my 10/05/15 -66 142 195 170 164 163 214 46 -19 5 196 175 my 04/18/16 -39 41 132 128 111 124 167 55 8 19 - 113 my 09/27/16 -42 -63 144 -12 116 71 72 2 -97 -115 - 87 my 04/25/17 -35.0 27.1 101.9 144.0 103.4 103.5 135.6 33.5 20.7 40.0 110.2 110.0 my 10/16/17 19.8 106.0 196.8 175.3 194.2 192.6 149.5 26.7 -41.4 -19.9 - 214.9 my 04/16/18 154.5 308.6 410.9 423.2 288.3 389.5 396.6 306.2 235.8 365.5 406.7 357.5 my 10/16/18 13.5 106.6 147.2 145.3 166.4 86.8 208.7 18.8 -75.4 -53.4 194.7 108.3 my 04/09/19 75.7 102.1 325.5 339.3 22.4 365.9 68.0 -41.0 -93.8 49.0 433.3 435.1 my 10/08/19 -117.2 -99.0 109.6 140.8 124.0 83.5 158.6 48.2 -100.9 -151.0 230.0 224.9 my 04/20/20 -81.9 -93.1 261.1 218.3 321.7 87.9 208.3 89.6 -30.4 -51.3 311.1 320.5 my 10/13/20 -43.8 -153.9 -140.2 -81.1 -21.8 -106.6 227.9 97.5 -28.3 -8.3 22.9 -6.2 my 04/27/21 -62.0 15.0 139.2 128.6 164.5 160.5 104.7 56.4 -18.5 20.1 176.6 175.6 my 10/12/21 -38.5 35.8 265.2 185.9 217.2 133.0 192.1 56.7 -77.8 -39.9 243.8 241.7 my 04/19/22 -85.2 155.1 210.0 213.3 101.2 93.7 185.4 36.5 -13.7 30.3 126.4 117.1 Dissolved Oxygen (Field) mg/L 05/11/05 0.36 3.40 2.05 2.25 1.90 0.62 2.20 0.94 2.89 3.18 7.06 5.11 mg/L O5/11/05 4.06 4.38 0.83 1.54 2.47 2.8 2.4 0.66 0.59 2.12 4.78 5.8 mg/L 10/11/05 0.50 1.35 2.31 3.45 1.89 0.78 1.08 0.72 3.20 5.19 198 6.48 mg/L 10/16/06 0.29 0.53 1.69 2.30 1.14 0.30 1.43 0.44 0.61 0.81 4.6 3.92 mg/L 04/27/10 4.82 3.55 4.30 3.76 4.59 1.35 2.37 1.46 3.03 4.98 7.84 5.74 mg/L 10/05/10 1.73 0.95 3.97 2.97 2.22 2.16 3.27 1.94 1.91 3.08 2.22 4.9 mg/L 05/11/11 1.18 1.20 3.24 0.64 4.19 2.09 2.54 2.18 3.50 3.11 7.84 4.72 mg/L 10/05/11 5.67 5.44 5.09 3.16 3.69 4.60 5.14 4.23 4.06 5.69 7.94 6.49 mg/L 04/19/12 3.31 3.23 4.82 3.78 4.79 2.35 3.71 1.73 3.03 2.05 - 5.01 mg/L 10/22/12 2.39 3.17 2.03 1.80 2.95 2.98 2.46 1.59 1.11 3.52 - 3.4 mg/L 04/23/13 1.34 1.87 2.57 1.47 4.19 2.33 1.87 1.69 1.42 2.85 -- 3.9 mg/L 09/10/13 3.89 2.01 3.02 3.24 4.09 3.33 1.44 2.19 3.20 3.82 -- 5.12 mg/L 04/21/14 6.95 2.62 3.46 2.22 3.12 4.19 5.39 3.05 3.45 5.19 9.49 7.29 mg/L 09/30/14 4.41 4.07 4.03 3.84 2.39 1.80 3.47 1.58 2.86 3.72 -- 5.52 mg/L 04/13/15 3.29 6.84 3.57 1.84 2.42 3.82 4.16 2.18 7.00 5.33 -- 5.51 mg/L 10/05/15 2.51 3.09 2.21 2.63 3.02 1.69 3.11 1.15 2.26 2.78 7.39 6.06 mg/L 04/18/16 2.68 1.47 3.45 3.59 3.30 2.60 3.77 2.10 3.10 5.42 -- 6.5 mg/L 09/27/16 1.77 1.15 1.28 1.99 2.17 1.33 1.26 0.38 0.94 1.48 -- 3.58 mg/L 04/26/17 4.77 5.91 3.28 1.03 4.86 1.69 0.52 6.02 2.20 1.99 10.37 7.41 mg/L 10/16/17 0.82 1.37 0.96 1.81 2.17 1.28 1.36 1.07 0.71 1.97 - 7.86 mg/L 04/16/18 1.18 0.99 1.59 1.41 3.53 1.96 2.02 0.53 0.52 2.95 6.74 4.46 mg/L 10/16/18 4.06 4.38 0.83 1.54 2.47 2.80 2.40 0.66 0.59 2.12 4.78 5.80 mg/L 04/09/19 4.15 0.30 1.91 0.98 2.38 0.95 0.70 1.18 2.15 1.57 6.59 5.28 mg/L 10/08/19 3.92 1.47 1.04 3.35 2.44 0.65 0.86 0.38 0.70 1.52 5.03 3.92 mg/L 04/20/20 0.75 0.99 1.97 0.93 3.09 1.39 4.38 5.14 2.26 4.94 6.68 4.37 mg/L 10/13/20 0.75 1.08 0.52 0.76 2.97 0.76 0.42 0.29 0.46 1.49 6.62 4.33 mg/L 04/27/21 0.98 0.67 2.85 1.27 1.82 1.09 0.20 0.37 1.65 3.79 6.80 3.86 mg/L 10/12/21 1.00 0.50 1.70 1.21 1.54 1.38 4.08 0.80 0.28 1.59 4.08 2.97 m /L 04/19/22 1.05 0.54 2.50 1.14 2.05 2.06 0.62 1.40 0.21 3.11 6.99 3.89 Notes: S.U. = Standard Units NTU = Nephelometric Turbidity Units uS/cm = microsiemens per centimeter mg/L = milligrams per liter mv= Millivolts -- = no data Data prior to April 2017 provided by SRME Engineering ►1%11 GGLDEA 3 of3 August 2022 19131339.105 TABLE6 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sam Method Practical SWSple Upstream Surface Water Monitoring Points owns ream Surface Water (SW Standard) Units Date Detection Quanitation Reporting M nl rin PointBlanks Limit Limiimit Limit SW-1 SW-2 SWJ SW-4 Antimony ug/L 03/01/00 - - 30 NO NO NO NO NO No SW Standard ug/L 0"01/00 -- - 30 NO NO ND NO NO ug/L 03/01/01 - - 30 NO NO NO NO NO ug/L 09/01/01 - - 30 NO NO NO NO NO ug/L 03/01/02 - - 30 NO NO NO NO NO ug/L 09/01/02 - - 30 NO NO NO NO NO 04/01/03 - - 30 NO NO NO NO NO %ug/L [- 10/01/03 - - 30 NO NO NO NO NO 03/01/04 - - 30 NO NO NO NO NO %ug/L [- 09/01/04 - - 30 NO NO NO NO NO ug/L 05/01/OS - - 30 NO NO NO NO NO %[- 10/01/0S - - 30 NO NO NO NO NO 04/01/OB - - 30 NO NO NO NO NO %ug/L [- 10/0110 - - 30 NO NO NO NO NO ug/L 04/10/07 - - - NO NO NO NO NO 09/25/07 - - - NO NO NO NO NO %ug/L [- 05/05/08 0.68 - 6 - NO NO NO NO 12/04/08 0.68 - 6 - NO NO NO NO %ug/L [- 04/13/09 0.68 - 6 - NO NO NO NO ug 10/20/09 0.073 6 0.4 .18 B 0.351 B 0B - L 0430/10 0.22 6 NO 0.272 J 0..346 225 J NO ug/L 10/11,10 02 6 - 0.329 J 02J 0233 J NO ug/L ON2/11 0.22 6 0.44 NO 0.287 J 0241 J NO ug/L 10/07/11 1.1 6 NO NO NO 0.287 J NO ug/L 04/19/12 0.22 - 6 0.279 J NO 0.34 J 0.308 J NO ug/L 10/26/12 0.22 - 6 NO NO NO NO NO ug/L 04/25/13 0.22 - 6 NO NO NO NO NO ug/L 09/12/13 0.22 - 6 NO 0.344 J 0.28 J NO NO ug/L 04/25/14 0.22 - 6 0.695 J 1.62 J 0.582 J 0.332 J NO ug/L 101021 4 0.22 - 6 0.526 J NO 0.378 J 0.268 J NO ug/L 04/061 5 0.22 - 6 0.312 J NO 0.232 J NO NO ug/L 10/0715 0.22 - 6 0.268 J NO 0.372 J 0.259 J NO ug/L 04/20/16 0.22 - 6 0.22 NO NO 0.424 J NO ug/L 09/26/16 0.22 - 6 NO NO NO NO NO ug/L 04/28/17 0.37 - 6 0.708 J NO 0.485 J NO NO ug/L 10/17/17 0.37 - 6 0.455 J NO 0.490 J NO NO ug/L 04/16/18 1.85 - 6 NO NO NO NO ND ug/L 10/18/18 1.85 5.0 - NO NO NO NO ND ug/L 04/12/19 0.74 2.0 - NO NO NO NO ND u9/L 10/O8/19 0.74 2.0 - NO NO NO NO ND u9/L 04/20/20 0.74 2.0 - NO NO NO NO ND ug/L 10/15/20 0.74 2.0 - NO NO NO NO ND ug/L 04/29/21 0.74 2.0 - NO NO NO NO NO ug/L 10/14/21 0.37 1.0 - NO NO NO NO NO u /L 1 04/19/22 0.74 1 2.0 NO NO NO NO ND Arsenic ug/L 03/01/00 - - 10 NO NO NO NO NO SW Ste dard ug/L 09/01/00 - - 10 NO NO NO NO NO Human Health = 10 ug/L ug/L 03/01/01 - - 10 NO NO NO NO NO 0/01/01 - - 10 NO NO NO NO NO %ug/L [- 0:101/02 - - 10 NO NO NO NO NO ug/L 09/01/02 - - 10 ND ND ND ND NO ug/L 04/01/03 - - 10 NO NO NO NO NO ug/L 10/01/03 - - 10 NO NO NO NO NO ug/L 03/01/04 - - 10 NO NO NO NO NO ug/L 09/01/04 - - 10 NO NO NO NO NO ug/L 05/01/OS - - 10 NO NO NO NO NO ug/L 10/01/0S - - 10 NO NO NO NO NO ug/L 04/01/OB - - 10 NO NO NO NO NO ug/L 10/01/0B -- - 10 NO NO NO NO NO ug/L 04/10/07 - - - NO NO NO NO NO ug/L 09/25/07 -- - - NO NO NO NO NO ug/L 05/05/08 2 - 10 -- NO 2.4 J NO NO ug/L 12/04/08 2.8 - 10 - NO NO NO NO ug/L 04/13/09 2.8 - 10 - NO NO NO NO ug/L 10/20/09 2.8 - 10 NO NO NO NO NO ug/L 04/30/10 2.8 - 10 - NO NO NO NO ug/L 10/111 0 2.8 - 10 - NO NO NO NO ug/L 05/12/11 2.8 - 10 3.04 J 3.39 J NO NO ug/L 10/07/11 2.8 - 10 NO NO NO NO NO ug/L 04/19/12 2.8 - 10 NO NO 3.12 J NO NO ug/L 10/26/12 2.8 - 10 NO NO NO NO NO ug/L 04/25/13 2.8 - 10 NO NO NO NO NO ug/L 09/12/13 5.4 - 10 NO NO NO NO NO ug/L 04/25/14 5.4 - 10 NO NO NO NO NO ug/L 101021 4 5.4 - 10 6.11 J NO NO NO NO ug/L 04/0615 6.8 - 10 NO NO NO NO NO ug/L 10/07/15 6.8 - 10 NO NO NO NO NO ug/L 04/20/i6 6.8 - 10 NO NO NO NO NO ug/L 09/26/i6 6.8 - 10 NO NO NO NO NO ug/L 04/28/17 6.8 - 10 NO NO NO NO NO ug/L 10/17/17 6.8 - 10 NO NO NO NO NO ug/L 04/16/18 6.8 10 NO NO NO 9.17 J NO ug/L 10/18/18 7.6 10 - NO NO NO NO NO ug/L 04/1 PJ19 7.6 10 - NO NO NO NO NO ug/L 10/08/19 7.6 10 - NO NO NO NO NO ug/L 04/20/20 7.6 10 - NO NO NO NO NO ug/L 10/15/20 7.6 10 - NO NO NO NO NO ug/L 04/29/21 7.6 10 - NO NO ND NO ND ug/L 10/14/21 7.8 10 - NO NO ND NO ND u /L 04/19/22 7.8 10 NO NO NO I NO I ND W,I) GOLDER 1 of 12 August 2022 19131339.105 TABLES Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points owns ream Surface Water (SW Standard) Units Date Detection Quanitation Reporting Monitoring Pin Blanks Limit Limit Limit SW-t SW-2 SWJ SW-4 Ban in ug/L 03/01/00 - - 500 NO NO NO NO NO SW Standard ug/L 09/01/00 -- - 500 NO NO NO NO NO Human Health=200 mg/L ug/L 03/01/01 - - 500 NO NO NO NO NO ug/L 09/01/01 - - 500 NO NO NO NO NO ug/L 03/01/02 - - 500 NO NO NO NO NO ug/L 09/01/02 - - 500 ND ND ND ND NO ug/L 04/01/03 - - 500 NO NO NO NO NO ug/L 10/01/03 - - 500 NO NO NO NO NO ug/L 03/01/04 - - 500 NO NO NO NO NO ug/L 09/01/04 - - 500 NO NO NO NO NO ug/L 05/01/OS - - 500 NO NO NO NO NO ug/L 10/01/0S - - 500 NO NO NO NO NO ug/L 04/01/OB - - 500 NO NO NO NO NO ug/L 10/0110 - - 500 NO NO NO NO NO ug/L 04/10/07 - - - 41.8 J 54.8 J 21.7 J 25.4 J NO ug/L 09/25/07 - - - 74.5 J 70.9 J 16.8 J 23 J NO ug/L 05/05/08 0.2 - 100 - 51.2 B 53 B 92.5 B NO ug/L 12/04/08 1 - 100 -- 35.9 J 21.8 J 27 J NO ug/L 04/13/09 4.2 - 100 - 53.4 J 44.8 J 41.6 J NO ug/L 10/20/09 1 - 100 68.3 J 36.3 J 21.8 J 27.2 J NO ug/L 04/3010 1 - 100 -- 48.5 J 30.9 J 37.1 J NO ug/L 10/11/10 1 - 100 -- 47.1 J 18.8 J 29.3 J NO ug/L 05/12/11 1 - 100 77.3 J 39.3 J 40.3 J 35.3 J NO ug/L 10/07/11 1 - 100 74.2 J 76.4 J 21.4 J 42.7 J NO ug/L 04/19/12 1 - 100 43.7 J 48.4 J 23.5 J 33.7 J NO ug/L 10/26/12 1 - 100 48.2 J 51.2 J 25.2 J 34.8 J NO ug/L 04/25/13 1 - 100 57 J 65.1 J 28.5 J 40.8 J NO ug/L 09/12/13 1 - 100 56.7 J 40.7 J 25.3 J 31.5 J NO ug/L 04/25/14 1 - 100 100 60.8 J 49.3 J 52.7 J NO ug/L 10/02/14 1 - 100 112 45.9 J 22.3 J 24.4 J NO ug/L 04/061 5 1 - 100 59.3 J 44.3 J 42.2 J 35.5 J NO ug/L 10/0715 1 - 100 85.7 J 46.2 J 28.3 J 319 NO ug/L 04/20/16 1 - 100 113 46.3 J 47.5 J 31 J NO ug/L 09/26/16 1 - 100 44.8 J 52.8 J 17.6 J 27.9 J NO ug/L 04/28/17 1 - 100 46.5 J 45.4 J 59.9 J 50.2 J NO ug/L 10/1717 1 - 100 40.1 J 33.6 J 55.8 J 41.2 J NO ug/L 04/16/18 1 too 42.9 J 45.4 J 42.1 J 43.9 J NO ug/L 10/18/18 1.1 10 - 56.6 57.4 56.4 61.7 NO ug/L 04/12/19 1.1 10 - 60.9 64.6 40.0 56.8 NO ug/L 10/08/19 1.1 10 - 55.9 49.1 55.1 57.8 NO u9/L 04/20/20 1.1 10 - 41.9 48.0 44.2 42.2 NO ug/L 10/15/2 1.1 10 - 47.9 48.5 47.3 52.0 NO ug/L 04/29/20 1.1 10 - 47.5 42.5 41.6 45.0 NO ug/L 10/14/21 1.1 10 - 43.8 41.4 51.2 43.1 NO u /L 04/19/22 1.1 10 42.7 51.1 41.4 45.5 NO Beryllium ug/L 03/01/00 - - 2 NO NO NO NO NO SW Standard ug/L 09/01/00 - - 2 ND NO ND NO ND Acute = 65 ug/L ug/L 03,01/01 - - 2 NO NO NO NO NO Chronic = 6.5 ug/L ug/L 09/01/01 - - 2 NO NO NO NO NO ug/L 03/01/02 - - 2 NO NO NO NO NO ug/L 09/01/02 - - 2 NO NO NO NO NO ug/L 04/01/03 - - 2 2.4 2.4 2.3 2.3 NO ug/L 10/01/03 - - 2 NO NO NO NO NO ug/L 03/01/04 - - 2 NO NO NO NO NO ug/L 09/01/04 - - 2 NO NO NO NO NO ug/L 05/01/OS - - 2 NO NO NO NO NO ug/L 10/01/0S - - 2 NO NO NO NO NO ug/L 04/01/OB - - 2 NO NO NO NO NO ug/L 10/01/0B -- - 2 NO NO NO NO NO ug/L 04/10/07 - - - NO NO NO NO NO ug/L 09/25/07 -- - - NO NO NO NO NO ug/L 05/OS/0 0.7 - 1 - NO NO NO NO ug/L 12/04/088 0.1 - 1 - NO NO NO NO ug/L 04/13/09 0.08 - 1 - NO NO NO NO ug/L 10/20/09 0.1 - 1 0.113 J NO NO NO 0.42 J ug/L 04/30/10 0.1 - 1 - NO NO NO NO ug/L 10/111 0 0.1 - 1 - NO NO NO NO ug/L 05/12/11 0.1 - 1 NO NO NO NO NO ug/L 10/07/11 0.1 - 1 NO 0.149 J NO NO NO ug/L 04/19/12 0.1 - 1 NO NO NO NO NO ug/L 10/26/12 0.1 - 1 NO NO NO NO NO ug/L 04/25/13 0.1 - 1 NO NO NO NO NO ug/L 09/12/13 0.1 - 1 NO NO NO NO NO - 04/25/14 0.1 - 1 NO NO NO NO NO Zlug/L 10/02/14 0.1 - 1 NO NO NO NO NO ug/L 04/06/15 0.1 - 1 NO NO NO NO NO ug/L 10/07/15 0.1 - 1 NO NO NO NO NO ug/L 04/20/i6 0.1 - 1 NO NO NO NO NO ug/L 09/26/i6 0.1 - 1 NO NO NO NO NO ug/L 04/28/17 0.13 - 1 NO NO NO NO NO ug/L 10/17/17 0.13 - 1 NO NO NO NO NO ug/L 04/16/18 0.13 1 NO NO NO NO NO ug/L 10/18/18 0.16 1.0 - NO NO NO NO NO ug/L 04/1PJ19 0.16 1.0 - NO NO ND NO ND ug/L 10/08/19 0.16 1.0 - NO NO NO NO NO u9/L 04/20/20 0.16 1.0 - NO NO ND NO ND ug/L 10/15/20 0.16 1.0 - NO NO NO NO NO ug/L 04/29/21 0.16 1.0 - NO NO NO NO NO ug/L 10/14/21 0.16 1.0 - NO NO ND ND NO u /L 04/19/22 0.16 1.0 NO NO ND ND NO W,I) GOLDER 2 of 12 August 2022 19131339.105 TABLES Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points owns ream Surface Water (SW Standard) Units Date Detection Quanitation Reporting Monitoring Pin Blanks Limit Limit Limit SW-t SW-2 SWJ SW-4 Cadmium ug/L 03/01/00 - - 1 NO NO NO NO NO SW Standard, Acute (ug/L) ug/L 09/01/00 -- - 1 NO NO NO NO NO SWA =3.12 ug/L 03/01/01 - - 1 NO NO NO NO NO SW-2=2.81 %!- 09/01/01 1.1 NO NO NO NO SW-3 = 2.41 ug/L 03/01/02 - - 1 NO NO NO NO NO SW-4=3.74 %!- 09/01/02 - - 1 NO 1.2 NO NO NO SW-5 = 3.17 ug/L 04/01/03 - - 1 4.1 3.8 4.0 3.9 NO SW Standard, Chronic (ug/L) ug/L 10/01/03 - - 1 NO ND NO NO NO SW.1 = 0.47 %!- 03/01/04 - - 1 1.0 NO 1.0 NO NO SW.2=0.43 ug/L 09/01/04 - - 1 NO NO NO NO NO SW-3 = 0.39 ug/L 05/01/OS - - 1 NO NO NO NO NO SW-4 = 0.56 ug/L 10/01/0S - - 1 NO NO NO NO NO SW-5 = 0.48 ug/L 04/01/OB - - 1 NO NO NO NO NO ug/L 10/01/OB - - 1 NO NO NO NO NO ug/L 04/10/07 - - - NO NO NO NO NO 09/25/07 - - - NO NO NO NO NO %ug/L !- 05/OS/08 0.5 - 1 - NO NO NO NO ug/L 12/04/08 0.36 - 1 - NO NO NO NO ug/L 04/13/09 0.09 - 1 - 0.14 J 0.17 J 0.26 J NO up 10/20/09 0.36 - 1 0.477 J NO NO NO NO 04/301 0 0.36 - 1 - NO NO NO NO %ug/L !- 10/11/10 0.36 - 1 - NO NO NO NO ug/L ON'21/11 0.36 - 1 0.471 J NO NO NO NO ug/L 10/07/11 0.36 - 1 NO NO NO NO NO ug/L 04/19/12 0.36 - 1 NO NO NO NO NO ug/L 10/26/12 0.36 - 1 NO NO NO NO NO ug/L 04/25/13 0.36 - 1 NO NO NO NO NO ug/L 09/12/13 0.36 - 1 NO NO NO NO NO ug/L 04/25/14 0.36 - 1 NO NO NO NO NO ug/L 10/02/14 0.36 - 1 0.661 J NO NO NO NO ug/L 04/061 5 0.36 - 1 NO NO NO NO NO ug/L 10/0715 0.36 - 1 0.784 J NO NO 5.66 NO ug/L 04/20/16 0.36 - 1 NO NO NO NO NO ug/L 09/26/16 0.36 - 1 NO NO NO NO NO ug/L 04/28/17 0.36 - 1 NO NO NO NO NO ug/L 10/17/17 0.36 - 1 NO NO NO NO NO ug/L 04/16/18 0.36 1 NO NO NO NO ND ug/L 10/18/18 0.36 1.0 - NO NO NO NO ND ug/L 04/1PJ19 0.36 1.0 - NO NO NO NO ND ug/L 10/O8/19 0.36 1.0 - NO NO NO NO NO ug/L 04/20/20 0.36 1.0 - NO NO NO NO ND ug/L 10/15/20 0.36 1.0 - NO NO NO NO ND ug/L 04/29/21 0.36 1.0 - NO NO NO NO NO ug/L 10/14/21 0.36 1.0 - NO NO NO NO ND u /L 1 04/19/22 0.36 1 1.0 NO NO NO NO NO Chromium ug/L 03/01/00 - - 10 NO NO NO NO NO SW Standard ug/L 09/01/00 - - 10 NO NO 25 14 NO SW Standard, Acute (ug/L) ug/L 03/01/01 - - 10 NO NO ND ND NO SW-1=643.41 ug/L 09/01/01 -- - 10 NO NO NO NO NO SW-2=583.72 ug/L 03/01/02 -- - 10 NO NO NO NO NO SW-3=517.90 %!- 09/01/02 - - 10 NO NO NO NO NO SW-4=763.69 ug/L 04/01/03 - - 10 NO NO NO NO NO SW-5=652.48 %!- 10/01/03 - - 10 NO NO 10 NO NO SW Standard, Chronic (ug/L) ug/L 03/01/04 - - 10 NO NO NO NO NO SW.1=83.69 %!- 09/01/04 - - 10 NO NO NO NO NO SW-2=75.93 ug/L 05/01/05 - - 10 NO NO NO NO NO SW-3=67.37 ug/L 10/01/OS - - 10 NO NO NO NO NO SW-4=99.34 ug/L 04/0110 - - 10 NO NO NO NO NO SW.5=84.87 ug/L 10/01/06 - - 10 NO NO NO NO NO up 04/10/07 - - - NO NO NO NO NO 09/25/07 -- - - ND NO NO NO NO %ug/L !- 05/05/08 2 - 10 -- NO NO 15.0 NO 12/04/08 1 - 10 -- NO 2.3 J NO NO %ug/L !- 04/13/09 0.7 - 10 - 1.40 J 1.60 J 1.10 J NO up 10/209 1 10 8.1 NO NO NO NO 04/30/1 1 10 NO 1.0 14 J NO NO 10/11/10 10 - 2.52 J 1.00ug NO 05/1211 1 0 4. NO 1.L 0J NO NO ug/ 10/07/11 1 10 69 J 6.25 J 1.L 21 J 3.00 J NO ug/L 04/19/12 1 0 1.11 J NO NO NO NO ug/L 10/26/12 1 - 10 NO NO NO NO NO ug/L 04/25/13 1.4 - 10 1.44 J 2.12 J NO NO NO ug/L 09/12/13 1.4 - 10 NO NO NO NO NO ug/L 04/25/14 1.4 - 10 11.7 NO 4.26 J 1.7 J NO ug/L 101 14 1.4 - 10 20.6 B 2.13 B 13.4 B 2.50 B - ug/L 04/O6/15 1.4 - 10 3.66 J NO 3.36 J NO NO ug/L 10/07/15 1.4 - 10 7.93 J NO NO 66.1 NO ug/L 04/20/16 1.4 - 10 14.6 NO 6.73 J NO NO ug/L 09/26/16 1.4 - 10 NO NO NO NO NO ug/L 04/28/17 1.4 - 10 NO NO 5.88 J 1.43 J NO ug/L 10/17/17 1.4 - 10 NO NO 3.94 J NO NO ug/L 04/16/18 1.4 10 1.74 J NO 1.80 J NO ND u9/L 10/18/18 1.4 10 - NO NO NO NO NO ug/L 04/1PJ19 1..4 10 J 1.77 J NO NO N D 10/OB/1 1. 1 ..3 8u9/L 163 J NO NO NO NO u9/L 04/20/2 4 10 0 15 J NO 1.7J NO N D ug/L 14 . 10 3.09 J 1.64 J 80 2 2.29 J NO ug/L 04/29/21 9 J NO NO NO NO ug/L 10/14/21 14 10 2.33 J NO 2.82 NO NO u /L 04/19/22 1.4 10 203 J NO 180 J NO NO W,I) GOLDER 3 of 12 August 2022 19131339.105 TABLES Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points owns ream Surface Water (SW Standard) Units Data Detection Quanitation Reporting Monitoring Pin Blanks Limit Limit Limit SW-t SW-2 SWJ SW-4 Cobalt ug/L 03/01/00 - - 10 NO NO NO NO NO No SW Standard ug/L 09/01/00 -- - 10 NO NO NO NO NO ug/L 031,1101 - - 10 NO NO NO NO NO up 09/01/01 - - 10 NO NO NO NO NO ug/L 03/01/02 - - 10 NO NO NO NO NO ug/L 09/01/02 - - 10 NO 17 NO NO NO ug/L 04/01/03 - - 10 14 14 15 14 NO 10/01/03 - - 10 NO NO NO NO NO %ug/L !- 03/01/04 - - 10 NO NO NO NO NO 09/01/04 - - 10 NO NO NO NO NO %ug/L !- 05/01/OS - - 10 NO NO NO NO NO 10/01/OS - - 10 NO NO NO NO NO %ug/L !- 04/01/O6 - - 10 NO NO NO NO NO 10/01/OB - - 10 NO NO NO NO NO %ug/L !- 04/10/07 - - - NO NO NO NO NO 09/25/07 - - - 3.5 J NO NO NO NO %ug/L !- 05/05/08 2 - 10 - NO NO 7.1 J NO ug/L 12/04/08 1.1 - 10 - NO NO NO NO ug/L 04/13/09 0.6 - 10 - 1.8 J 0.7 J 0.8 J NO ug/L 10/20/09 1.1 - 10 3A3 J NO NO NO NO ug/L 04/30/10 1.1 - 10 - NO NO NO NO ug/L 10/11,10 1.1 - 10 - NO NO NO NO ug/L ON2/11 1.1 - 10 3.19 J NO NO NO NO ug/L 10/07/11 1.1 - 10 4.06 J 6.5 J 1.19 J 2.28 J NO ug/L 04/19/12 1.1 - 10 NO NO NO NO NO ug/L 10/26/12 1.1 - 10 NO NO NO NO NO ug/L 0412.13 1.1 - 10 NO 2.03 J NO NO NO ug/L 09/12/13 1.1 - 10 NO NO 1.46 J 1.15 J NO ug/L 04/25/14 1.1 - 10 4.31 J NO 1.91 J NO NO ug/L 10/02/14 1.1 - 10 8.95 J NO 4.56 J 2.4fi J NO ug/L 04/061 5 1.1 - 10 1.73 J NO 2.44 J 1.56 J NO ug/L 10/071 5 1.1 - 10 4.34 J NO 2.43 J 46.5 NO ug/L 04/20/16 1.1 - 10 7.38 J NO 4.32 J 1.66 J NO ug/L 09/26/16 1.1 - 10 NO 1.30 J NO NO NO ug/L 04/28/17 1.1 - 10 NO NO 2.31 J NO NO ug/L 10/17/17 1.1 - 10 NO NO 2.94 J NO NO ug/L 04/16/18 1.1 10 1.65 J 1.49 J ND 1.30 J ND ug/L 10/18/18 1.4 10 - NO NO ND NO ND ug/L 04/12/19 1.4 10 - NO 1.40 J NO NO NO ug/L 10/08/19 1.4 10 - NO NO NO NO NO ug/L 04/20/20 1.4 10 - NO NO NO NO NO ug/L 10/15/20 1.4 10 - NO NO NO NO NO ug/L 04/29/21 1.4 10 - NO NO NO NO NO ug/L 10/14/21 1.4 10 - NO NO NO NO NO u /L 1 04/19/22 1.4 1 10 NO NO NO NO ND Copper ug/L 03/01/00 - - 200 ND NO NO NO NO SW Standard, Acute (ug/L) ug/L 09/01/00 - - 200 NO NO NO NO NO SW-1 = 15.46 ug/L 03/01/01 - - 200 NO NO NO NO NO SW-2=13.82 ug/L 09/01/01 - - 200 NO NO NO NO NO SW-3=12.04 ug/L 03/01/02 - - 200 NO NO NO NO NO SW-4=18.82 ug/L 09/01/02 - - 200 NO NO NO NO NO SW-5=15.71 ug/L 04/01/03 - - 200 NO NO NO NO NO SW Standard, Chronic (ug/L) ug/L 10/01/03 - - 200 NO NO NO NO NO SW-1 = 10.17 ug/L 03/01/04 - - 200 NO NO NO NO NO SW-2=9.18 ug/L 09/01/04 - - 200 NO NO NO NO NO SW-3=8.11 ug/L 05/01/OS - - 200 NO NO NO NO NO SW-4=12.16 ug/L 10/01/OS - - 200 NO NO NO NO NO SW-5=10.32 ug/L 04/01/OB - - 200 NO NO NO NO NO 10/01/OB - - 200 NO NO NO NO NO %ug/L !- 04/10/07 - - - 2.20 J 1.50 J J 6.235 4..50 J NO ug/L 09/25/0 - 11.2 06 1. 8.40 J NO %!- 05/05/08 0.6 10 - 1.3 J 2.05 13.3 NO ug/L 1204/08 1.6 10 20.5 460 J 43J NO u 1 04/3/0 0.81 1gL 0 - 1.93 J 2.56 J 1.87 J NO 10/2 1.6 10 10. NO 7.1 J 51J NO %ug/L !- 19 04/30/0 1.6 10 NO 59J 3.30 J NO 10/111 0 1.6 10 - 10.2 8.12 J 55J NO %ug/L !- 05/12J 1 1.6 10 12. NO 3.34 J 2.8J NO 10/07/11 1.6 10 8.31 J 5.88 J 4.91 J 65J NO %ug/L !- 04/19/12 6 10 272 J NO 5.0J 436 J NO ug/L 10/26/12 1. 10 2.3. J NO 5.4J 2.22 J NO u 1 04/25/3 6 10 43 5.01 .4J 4.33 NOgL ug 09/1/13 16 10 1.94 J NO 1.6J NO NO 04/25/14 1.6 10 167 . B 3.46 B 1L 0.B 5.92 B - ug/L 101114 1. 10 30. J 61 5.42 J NO ug/ 0/O2 615 6 10 4.3 3.71 J 1L 1. 5.23 J NO ug/L 10/07/15 1.6 - 10 11.3 1.6 2.65 J 57.1 NO ug/L 04/20/i6 1.6 - 10 21.2 NO 10.8 2.56 J NO ug/L 09/26/167 1.6 - 10 4.52 J 2.52 J 6.61 J 6.03 J NO ug/L 04/28/17 1.8 - 10 5.19 J 3.0 J 13.4 4.55 J NO ug/L 10/1117 1.8 - 10 3.95 J 1..77 JJ 9..07 J J 2...5 NO ug/L 04/16/18 1.8 10 4.40 J 4.1 41J 53J NO ug/L 1018/18 10 3.11 J 3.8499 J 2.712 J 242 J NO ug/L 04/12/19 1.6 10 3.44 J 5.44 J 511 J 3.66 J NO ug/L 10/08/1 1.8 10 2.23 J 181 J 2.92 J 2.6J NO ug/L 04/20/29 10 472 J NO 4.8J 644 J N u9/L 10/15/20 18 10 4.38 J 4.03 J 4.353 J 4.59 J ND ug/L 04/29/21 . 1.6 10 NO NO NO NO NO ug/ 10/14/21 1.8 10 1 B NO N 12 B JL 2.N62 / 1 10 N6D6 NO ND N8D Du W,I) GOLDER 4 of 12 August 2022 19131339.105 TABLES Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points owns ream Surface Water (SW Standard) Units Date Detection Quanitation Reporting Monitoring Pin Blanks Limit Limit Limit SW-t SW-2 SWJ SW-4 Lead ug/L 03/01/00 - - 10 NO NO 15 NO NO SW Standard, Acute (ug/L) ug/L 09/01/00 -- - 10 NO NO 10 NO NO SW.1=75.88 ug/L 03/01/01 - - 10 NO NO NO NO NO SW-2=66.69 ug/L 09101/0, - - 10 25 NO NO NO NO SW-3=56.87 ug/L 03/01/02 - - 10 NO NO NO NO NO SW-4=95.12 ug/L 09/01/02 - - 10 NO 88 NO NO NO SW.5=77.30 ug/L 04/01/03 - - 10 NO NO NO NO NO SW Standard, Chronic (ug/L) ug/L 10/01/03 - - 10 NO NO NO NO NO SW.1=2.96 %L 03/01/04 - - 10 NO NO NO NO NO SW.2 = 2.60 ug/L 09/01/04 - - 10 NO NO NO NO NO SW.3 = 2.22 ug/L 05/01/OS - - 10 NO NO NO NO NO SW-4=3.71 ug/L 10/01/0S - - 10 NO NO NO NO NO SW-5=3.01 ug/L 04/01/OB - - 10 NO NO NO NO NO up 10/01/OB - - 10 NO NO NO NO NO ug/L 04/10/07 - - - NO NO NO NO NO 09/25/07 - - - 11.2 NO NO NO NO %ug/L L 05/05/08 2 - 10 -- NO NO 14.8 NO ug/L 12/04/08 1.9 - 10 - NO NO NO NO ug/L 04/13/09 1.6 - 10 - 2.30 J 2.50 J 1.60 ND ug/L 10/20/09 1.9 - 10 8.94 J NO NO 2.44 J NO 04/301 0 1.9 - 10 - NO NO NO NO %ug/L L 10/11/10 1.9 - 10 - 5.45 J 1.90 1.90 NO ug/L OS/12/11 1.9 - 10 15.4 NO 2.00 J NO NO ug/L 10/07/11 1.9 - 10 10.0 16.4 NO 3.33 J NO ug/L 04/19/12 1.9 - 10 NO NO 2.38 J NO NO ug/L 10/26/12 1.9 - 10 NO NO NO NO NO ug/L 04/25/13 1.9 - 10 NO 4.74 J NO NO NO ug/L 09/12/13 2.1 - 10 NO NO NO NO NO ug/L 04/25/14 2.1 - 10 11.2 3.23 J 3.36 J 2.23 J NO ug/L 10/02/14 2.1 - 10 NO NO NO NO NO ug/L 04/061 5 3.1 - 10 NO NO NO NO NO ug/L 10/071 5 3.1 - 10 7.02 J NO NO 93.2 NO ug/L 04/20/16 3.1 - 10 14.6 NO 6.10 J NO NO ug/L 09/26/16 3.1 - 10 NO NO NO NO NO ug/L 04/28/17 3.1 - 10 NO NO 4.66 J NO NO ug/L 10/17/17 3.1 - 10 NO NO 3.18 J NO NO ug/L 04/16/18 3.1 10 NO NO NO NO ND ug/L 10/18/18 3.1 10 - NO NO NO NO ND ug/L 04/12/19 3.1 10 - 3.91 J NO NO NO ND ug/L 10/08/19 3.1 10 - NO NO NO NO ND ug/L 04/20/20 3.1 10 - NO NO NO NO ND ug/L 10/15/20 3.1 10 - NO NO NO NO ND ug/L 04/29/21 3.1 10 - NO NO NO NO 3.20 J ug/L 10/14/21 3.1 10 - NO NO NO NO NO u /L 1 04/19/22 3.1 1 10 NO NO NO NO ND Nickel ug/L 03/01/00 - - 50 NO NO NO NO NO SW Standard, Acute (ug/L) ug/L 09/01/00 - - 50 NO NO 82 65 NO SW-1=530.88 ug/L 03/01/01 - - 50 NO NO NO NO NO SW-2=480.09 ug/L 09/01/01 - - 50 NO NO NO NO NO SW-3=424.28 ug/L 03/01/02 - - 50 NO NO NO NO NO SW-4=633.69 ug/L 09/01/02 - - 50 NO NO NO NO NO SW-5=538.61 ug/L 04/01/03 - - 50 ND ND ND NO NO SW Standard, Chronic (ug/L) ug/L 10/01/03 - - 50 NO NO NO NO NO SW.1=58.96 ug/L 03/01/04 - - 50 NO NO NO NO NO SW-2=53.32 ug/L 09/01/04 - - 50 NO NO NO NO NO SW-3=47.12 ug/L 05/01/OS - - 50 NO NO NO NO NO SW-4=70.38 ug/L 10/01/OS - - 50 NO NO NO NO NO SW.5=59.82 ug/L 04/01/OB - - 50 NO NO NO NO NO ug/L 10/01/OB - - 50 NO NO NO NO NO ug/L 04/10/07 - - - NO NO 2.7 J NO NO ug/L 09/25/07 - - - NO NO 7.6 J NO NO ug/L 05/05/08 2.0 5 3.5 J 3.9 J 5.5 J NO ug/L 1204/08 1.8 5 NO 4.3 J 3.8 J NO /19 043/0 06 5 2.3 J 1ug/L 5 J 16 J NO ug/L 10/20/0 1.8 - 50 2.94 J NO 2.53 J 1.89 J NO ug/L 04/30/10 1.8 - 50 - NO NO NO NO ug/L 10/111 0 1.8 - 50 - 1.80 2.22 J 1.80 NO ug/L 05/12/11 1.8 - 50 2.34 J NO NO 2.57 J NO ug/L 10/07/11 1.8 - 50 3.64 J 4.23 J 6.40 J 4.31 J NO ug/L 04/19/12 1.8 - 50 NO NO 2.56 J 2.00 J NO ug/L 10/26/12 1.8 - 50 NO 1.92 J 5.32 J 5.14 J NO ug/L 04/25/13 1.8 - 50 2.38 J 3.30 J 6.20 J 6.96 J NO ug/L 09/12/13 1.8 - 50 NO NO 2.09 J NO NO ug/L 04/25/14 1.8 - 50 4.30 J 2.07 J 7.49 J 5.52 J NO ug/L 101021 4 1.8 - 50 7.25 J NO 23.7 J 9.96 J NO ug/L 04/0615 1.8 - 50 2.02 J NO 3.03 J 2.33 J NO ug/L 10/07/15 1.8 - 50 3.16 J NO 6.56 J 22.0 J NO ug/L 04/20/i6 2.2 - 50 5.60 J NO 5.02 J 8.54 J NO ug/L 09/26/i6 2.2 - 50 NO NO 3.54 J 3.34 J NO ug/L 04/28/17 2.2 - 50 NO NO 6.02 J 2.83 J NO ug/L 10/17/17 2.2 - 50 NO NO NO NO NO ug/L 04/16/18 2.2 50 NO NO ND NO ND ug/L 10/18/18 2.2 10 - NO NO ND NO ND ug/L 04/12/19 2.2 10 - NO NO NO NO NO ug/L 10/08/19 2.2 10 - NO NO ND NO ND ug/L 04/20/20 2.2 10 - 36.8 NO 3.71 J NO ND ug/L 10/15/20 2.2 10 - NO NO 3.50 J NO ND ug/L 04/29/21 2.2 10 - NO NO NO NO ND ug/L 10/14/21 2.2 10 - NO NO NO ND NO u /L 04/19/22 2.2 10 NO NO NO NO NO W,I) GOLDER 5 of 12 August 2022 19131339.105 TABLES Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points owns ream Surface Water (SW Standard) Units Date Detection Quanitation Reporting Monitoring Pin Blanks Limit Limit Limit SW-t SW-2 SWJ SW-4 Selenium ug/L 03/01/00 - - 20 ND ND ND ND ND SW Standards ug/L 09/01/00 -- - 20 ND ND ND ND ND Acute=5ug/L ug/L 03/01/01 - - 20 ND ND ND ND ND Chronic=5ug/L %L 09/01/01 - - 20 ND ND ND ND ND ug/L 03/01/02 - - 20 ND ND ND ND ND ug/L 09/01/02 - - 20 ND ND ND ND ND ug/L 04/01/03 - - 20 ND ND ND ND ND ug/L 10/01/03 - - 20 ND ND ND ND ND ug/L 03/01/04 - - 20 ND ND ND ND ND ug/L 09/01/04 - - 20 ND ND ND ND ND ug/L 05/01/OS - - 20 ND ND ND ND ND ug/L 10/01/0S - - 20 ND ND ND ND ND ug/L 04/01/OB - - 20 ND ND ND ND ND ug/L 10/0110 - - 20 ND ND ND ND ND ug/L 04/10/07 - - - ND ND ND ND ND ug/L 09/25/07 - - - ND ND ND ND ND ug/L 05/05/08 2 - 10 -- ND ND ND ND ug/L 12/04/08 2.7 - 10 - ND ND ND ND ug/L 04/13/09 14 - 10 - ND ND ND ND ug/L 10/20/09 2.7 - 10 ND ND ND ND ND ug/L 04/3010 0.83 - 10 - 1.72 J 0.9 J 0.974 J ND ug/L 10/11/10 0.83 - 10 - 0.83 0.83 0.83 ND ug/L 05/12/11 0.83 - 10 ND ND ND 1.16 J ND ug/L 10/07/11 4.15 - 10 ND ND ND 1.03 J ND ug/L 04/19/12 0.83 - 10 ND ND ND ND ND ug/L 10/26/12 0.83 - 10 ND ND ND ND ND ug/L 04/25/13 0.83 - 10 ND ND ND ND ND ug/L 09/12/13 0.91 - 10 ND ND ND ND ND ug/L 04/25/14 0.91 - 10 ND ND ND ND ND ug/L 101021 4 0.91 - 10 ND ND ND ND ND ug/L 04/061 5 0.91 - 10 ND ND ND ND ND ug/L 10/0715 0.91 - 10 ND ND ND ND ND ug/L 04/20/16 0.91 - 10 ND ND ND ND ND ug/L 09/26/16 0.91 - 10 ND ND ND ND ND ug/L 04/28/17 6.2 - 10 ND ND ND ND ND ug/L 10/17/17 6.2 - 10 ND ND ND ND ND ug/L 04/16/18 6.2 10 ND ND ND ND ND ug/L 10/18/18 6.2 10 - ND ND ND ND ND ug/L 04/12/19 6.2 10 - ND ND ND ND ND ug/L 10/08/19 6.2 10 - ND ND ND ND ND u9/L 04/20/20 6.2 10 - ND ND ND ND ND ug/L 10/15/20 6.2 10 - ND ND ND ND ND ug/L 04/29/21 6.2 10 - ND ND ND ND ND ug/L 10/14/21 6.2 10 - ND ND ND ND ND u /L 1 04/19/22 6.2 1 10 ND ND ND ND ND SIN ug/L 03/01/00 - - 10 ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 - - 10 ND ND ND ND ND SW-1=4.15 ug/L 03/01/01 - - 10 ND ND ND ND ND SW-2 = 3.38 ug/L 09/01/01 - - 10 ND ND ND ND ND SW.3 = 2.63 ug/L 03/01/02 - - 10 ND ND ND ND ND SW-4 = 5.95 ug/L 09/01/02 - - 10 ND ND ND ND ND SW.5=4.28 ug/L 04/01/03 - - 10 ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 - - 10 ND ND ND ND ND SW-1=0.06 ug/L 03/01/04 - - 10 ND ND ND ND ND SW-2=0.06 ug/L 09/01/04 - - 10 ND ND ND ND ND SW-3=0.06 ug/L 05/01/05 - - 10 ND ND ND ND ND SW-4=0.06 ug/L 10/01/05 - - 10 ND ND ND ND ND SW-5 = 0.06 ug/L 04/01/OB - - 10 ND ND ND ND ND ug/L 10/01/OB - - 10 ND ND ND ND ND ug/L 04/10/07 - - - ND ND ND ND ND ug/L 09/25/07 - - - ND ND ND ND ND ug/L 05/05/08 2 - 10 -- ND 2.20 J ND ND ug/L 12/04/08 1.9 - 10 - ND ND ND ND ug/L 04/13/09 1.0 - 10 - ND ND ND ND ug/L 10/20/09 1.9 - 10 ND ND ND ND ND ug/L 04/30/10 1.9 - 10 - 2.22 J ND ND ND ug/L 10/111 0 1.9 - 10 - ND ND ND ND ug/L 05/121 1 1.9 - 10 ND ND ND ND ND ug/L 10/07/11 1.9 - 10 ND ND ND ND ND ug/L 04/19/12 1.9 - 10 ND ND ND ND ND ug/L 10/26/12 1.9 - 10 ND ND ND ND ND ug/L 04/25/13 1.9 - 10 2.06 J ND 1.95 J 2.29 J ND ug/L 09/12/13 1.9 - 10 ND ND ND ND ND ug/L 04/25/14 1.9 - 10 ND ND ND ND ND ug/L 101021 4 1.9 - 10 ND ND ND ND ND ug/L 04/0615 1.9 - 10 ND ND ND ND ND ug/L 10/07/15 1.9 - 10 ND ND 2.74 J ND ND ug/L 04/20/i6 1.9 - 10 ND ND ND ND ND ug/L 09/26/i6 1.9 - 10 ND ND ND ND ND ug/L 04/28/17 1.9 - 10 ND ND ND ND ND ug/L 10/17/17 1.9 - 10 ND ND ND ND ND ug/L 04/16YI8 1.9 10 ND ND ND ND ND ug/L 10/18/18 1.9 10 - ND ND ND ND ND ug/L 04/12/19 1.9 10 - ND ND ND ND ND ug/L 10/08/19 1.9 10 - ND ND ND ND ND u9/L 04/20/20 1.9 10 - ND ND ND ND ND ug/L 10/15/20 1.9 10 - ND ND ND ND ND ug/L 04/29/21 1.9 10 - ND ND ND ND ND ug/L 10/14/21 1.9 10 - ND ND ND ND ND u /L 04/19/22 1.9 10 ND ND ND ND ND W,I) GOLDER 6 of 12 August 2022 19131339.105 TABLES Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points owns ream Surface Water (SW Standard) Units Data Detection Quanitation Reporting Monitoring Pin Blanks Limit Limit Limit SW-t SW-2 SWJ SW-4 Thallium ug/L 03/01/00 - - 10 ND ND ND ND ND No SW Standard ug/L 09/01/00 -- - 10 ND ND ND ND ND up 03/01/01 - - 10 ND ND ND ND ND ug/L 09/01/01 - - 10 ND ND ND ND ND up 03/01/02 - - 10 ND ND ND ND ND ug/L 09/01/02 - - 10 ND ND ND ND ND 04/01/03 - - 10 ND ND ND ND ND %ug/L !- 10/01/03 - - 10 ND ND ND ND ND 03/01/04 - - 10 ND ND ND ND ND %ug/L !- 09/01/04 - - 10 ND ND ND ND ND ug/L 05/01/OS - - 10 ND ND ND ND ND %!- 10/01/0S - - 10 ND ND ND ND ND 04/01/OB - - 10 ND ND ND ND ND %ug/L !- 10/0110 - - 10 ND ND ND ND ND up 04/10/07 - - - ND ND ND ND ND 09/25/07 -- - - 0.053 J 0.05 J 0.045 J 0.055 J ND %ug/L !- 05/05/08 0.036 - 5.5 - ND ND ND ND 12/04/08 0.036 - 5.5 - ND ND ND ND %ug/L !- 04/13/09 0.036 - 5.5 - ND ND ND ND ug/L 10/20/09 0.11 - 5.5 0.11 0.11 0.11 0.11 ND ug/L 04/30/10 0.11 - 5.5 - ND ND ND ND ug/L 10/11/10 0.11 - 5.5 - ND ND ND ND ug/L ON2/11 0.11 - 5.5 ND ND ND ND ND ug/L 10/07/11 0.55 - 5.5 ND ND ND ND ND ug/L 04/19/12 0.11 - 5.5 ND ND ND ND ND ug/L 10/26/12 O. - 5.5 ND ND ND ND ND ug/L 04/25/13 0.11 - 5.5 ND ND ND ND ND ug/L 09/12/13 0.11 - 5.5 ND ND ND ND ND ug/L 04/25/14 0.11 - 5.5 ND ND ND ND ND ug/L 101021 4 0.11 - 5.5 ND ND ND ND ND ug/L 04/061 5 0.11 - 5.5 ND ND ND ND ND ug/L 10/0715 0.11 - 5.5 ND ND ND ND ND ug/L 04/20/116 0.11 5....5 ND9 ND ND ND ND ug/L 09/26/16 0.11 55 0.10 J 0.124 J 0.205 J 0.187 J ND ug/L 04/2/7 0 55 0.3 J 0.267 J 0261 J 0.287 J ND ug/ 10/17/17 55 0.81J 0.655 0 698 J 0.840 J NL D ug/L %16/18 011 - 55 N ND ND N ug/L 10/18/18 0.55 5.0 ND ND ND ND ND ug/L 04/12/19 0.22 2.0 - ND ND ND ND ND ug/L 10/08/19 0.22 2.0 - ND ND ND ND ND u9/L 04/20/20 0.22 2.0 - ND ND ND ND ND ug/L 10/15/20 0.22 2.0 - ND ND ND ND ND ug/L 04/29/21 0.22 2.0 - ND ND ND ND ND ug/L 10/14/21 0.11 1.0 - ND ND ND ND ND u /L 1 04/19/22 0.22 1 2.0 ND ND ND ND ND Vanadium ug/L 03/01/00 - - 40 ND ND ND ND ND No SW Standard ug/L 09/01/O0 - - 40 ND ND ND ND ND ug/L 03/01/01 - - 40 ND ND ND ND ND 0/01/01 - - 40 ND ND ND ND ND %ug/L !- 0:101/02 - - 40 ND ND ND ND ND 09/01/02 - - 40 ND 44 ND ND ND %ug/L !- 04/01/03 - - 40 ND ND ND ND ND ug/L 10/01/03 - - 40 ND ND ND ND ND ug/L 03/01/04 - - 40 ND ND ND ND ND ug/L 09/01/04 - - 40 ND ND ND ND ND ug/L 05/01/OS - - 40 ND ND ND ND ND ug/L 10/01/0S - - 40 ND ND ND ND ND ug/L 04/01/OB - - 40 ND ND ND ND ND ug/L 10/01/0B -- - 40 ND ND ND ND ND ug/L 04/10/07 - - - ND ND ND ND ND ug/L 09/25/07 -- - - 7.1 J ND ND 1.5 J ND ug/L 05/05/08 1 - 25 -- ND ND 9.3 J ND ug/L 12/04/08 1.4 - 25 - ND ND ND ND ug/L 04/13/09 0.7 - 25 - 4.2 J 2.1 J 2.5 J ND ug/L 10/20/09 1.4 - 25 10.7 J 2.19 J 1.81 J 2.79 J ND ug/L 04/30/10 1.4 - 25 - ND ND ND ND ug/L 10/111 0 1.4 - 25 - 8.27 J 3.03 J 2.55 J ND ug/L 05/12/11 1.4 - 25 8.52 J 1.90 J 2.35 J 2.27 J ND ug/L 10/07/11 1.4 - 25 11.9 J 21.0 J 2.27 J 6.55 J ND ug/L 04/19/12 1.4 - 25 2.33 J ND 1.48 J 1.60 J ND ug/L 10/26/12 1.4 - 25 ND ND ND ND ND ug/L 04/25/13 1.4 - 25 2.31 J 5.99 J ND ND ND ug/L 09/12/13 1.4 - 25 2.11 J ND 1.70 J 1.53 J ND ug/L 04/25/14 1.4 - 25 17.9 J ND 4.7 J 2.25 J ND ug/L 101021 4 1.4 - 25 42.2 ND 3.14 J 2.66 J ND ug/L 04/0615 1.4 - 25 2.34 J ND 3.33 J ND ND ug/L 10/07/15 1.4 - 25 18.2 J 2.91 J 3.69 J 61.8 ND ug/L 04/20/i6 1.4 - 25 26.9 ND 12.0 J 2.13 J ND ug/L 09/26/i6 1.4 - 25 1.95 J ND ND 1.64 J ND ug/L 04/28/17 1.4 - 25 2.61 J 1.66 J 8.36 J 2.35 J ND ug/L 10/17/17 1.4 - 25 2.42 J ND 7.92 J 3.42 J ND ug/L 04/16/1 1. .9 J N u9/L 10/18/18 4 10 - 188 J 2.2 J 1.51 J 161 J ND u9/L 04/12/19 1.4 10 1.3 54 J 4.16 J 239 J 1.78 J ND D ug/L 10/08/1 1. 1 2.4 D u9/L 04/20/20 4 10 0 1.75 J ND 8 J 2.49 J ND ug/L 10/15/20 4 10 ND ND ND ND ND ug/L 04/29/21 14 10 ND ND ND ND ND ug/L 10/14/21 1.4 . 10 - ND ND ND ND ND u /L 04/19/22 1.4 10 ND ND ND ND ND W,I) GOLDER 7 of 12 August 2022 19131339.105 TABLES Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points owns ream Surface Water (SW Standard) Units Data Detection Quanitation Reporting Monitoring Pin Blanks Limit Limit Limit SW-t SW-2 SWJ SW-4 Zinc ug/L 03/01/00 - - 50 NO NO 31 58 NO SW Standard, Acute (ug/L) ug/L 09/01/00 -- - 50 NO NO 130 50 NO SW-1 = 132.88 ug/L 03/01/01 - - 50 NO NO 68 NO NO SW-2=120.15 ug/L 09/01/01 - - 50 120 NO 60 NO NO SW-3=106.16 ug/L 03/01/02 - - 50 NO NO 70 50 NO SW-4=158.66 ug/L 09/01/02 - - 50 NO 180 80 NO NO SW-5=134.82 ug/L 04/01/03 - - 50 NO NO NO NO NO SW Standard, Chronic (ug/L) ug/L 10/01/03 - - 50 NO NO 120 50 NO SW-1 = 133.97 ug/L 03/01/04 - - 50 NO NO 52 NO NO SW-2=121.14 ug/L 09/01/04 - - 50 58 NO 56 NO NO SW-3=107.03 ug/L 05/01/05 - - 50 NO NO NO NO NO SW-4=159.96 ug/L 10/01/05 - - 50 NO NO NO NO NO SW-5=135.92 ug/L 04/01/OB - - 50 NO NO 51.6 NO NO ug/L 10/0110 - - 50 NO NO 60.9 NO NO ug/L 04/10/07 - - - 7.6 J 23.5 48.4 38.2 NO ug/L 09/25/07 - - - 84.9 11.4 60.4 36.4 NO ug/L 05/05/08 1.0 - 10 - 5.8 J 6.4 J 154 NO ug/L 12/04/08 3.8 - 10 - 22.4 47.9 35.3 NO ug/L 04/13/09 3.4 - 10 - 24.9 21.4 25.8 NO ug/L 10/20/09 3.8 - 10 70.0 7.62 J 45.2 30.9 NO ug/L 04/3010 3.8 - 10 - 6.64 J 48.1 34.0 NO ug/L 10/11/10 3.8 - 10 - 32.0 30.1 22.8 NO ug/L 05/12/11 3.8 - 10 76.2 10.1 33.5 27.7 NO ug/L 10/07/11 3.8 - 10 102 62.1 45.0 60.5 NO ug/L 04/19/12 3.8 - 10 5.98 J NO 32.0 21.6 NO ug/L 10/26/12 3.8 - 10 12.3 5.81 J 25.3 20.3 NO up 04/25/13 3.8 - 10 15.0 25.8 42.6 31.6 NO ug/L 09/12/13 3.8 - 10 9.73 J NO 29.8 14.9 NO ug/L 04/25/14 3.8 - 10 66.3 7.92 J 63.3 37.2 NO ug/L 10/02/14 3.8 - 10 144 3.94 J 63.6 34.9 NO ug/L 04/061 5 3.8 - 10 16.4 5.33 J 57.3 30.0 NO ug/L 10/0715 3.8 - 10 117 7.88 J 25.2 1020 NO ug/L 04/20/16 4.4 - 10 111 NO 95.5 31.5 NO ug/L 09/26/16 4.4 - 10 5.08 J 5.21 J 20 16.4 NO ug/L 04/28/17 4.....4 10 11..0 6.98 J 64.8 21...1 NO ug/L 1017/17 4.4 10 8.83 J NO 32.5 5.72 J NO ug/L 04/16/18 44 10 114 10.6 103 63 N ug/L 10/18/18 4.4 10 - 129 12.2 11.8 7.5 ND ug/L 04/12/19 44 10 11.6 6.2 13.9 121 NOD ug/L 10 44 10 7.17 J ND 6.31 6.76 J ND u9/L 04/20/2 4.4 10 27.1 ND 13.6 13.3 ND0 ug/L 10/15/2 44 10 64 J ND 14.5 103 N ug/L 04/29/21 44 10 6.10 J ND 4.48 J 5.98 J NOD ug/L 10/14/21 44 10 4.54 J ND 477 J 10.5 NO u /L 1 04/19/22 4.4 1 10 6.67 J 6.19 J 7.15 J 14.6 NO Acetone ug/L 03/01/00 - - 100 NO ND NO ND - SWStandard =2000 ug/L ug/L 09/01/00 - - 100 NO NO NO NO NO ug/L 03/01/01 - - 100 NO NO NO NO NO 09/01/01 - - 100 NO NO NO NO NO %ug/L L 03/01/02 - - 100 NO NO NO NO NO ug/L 09/01/02 - - 100 NO NO ND ND NO ug/L 04/01/03 - - 100 NO NO NO NO NO 10/01/03 - - 100 NO NO NO NO NO %ug/L L 03/01/04 - - 100 NO NO NO NO NO 09/01/04 - - 100 NO NO NO NO NO %ug/L L 05/01/OS - - 100 NO NO NO NO NO 10/01/OS - - 100 NO NO NO NO NO %ug/L L 04/01/OB - - 100 NO NO NO NO NO 10/01/OB - - 100 NO NO NO NO NO %ug/L L 04/10/07 - - - NO NO NO NO NO 09/25/07 - - - NO 5.3 J 68 J 1.7 J NO %ug/L L 05/05/08 0.62 - 100 - NO NO NO NO ug/L 12/04/08 1.5 - 100 - 7.9 J 9.1 J 7.6 J NO ug/L 04/13/09 1.5 - 100 - NO NO NO NO 10/20/09 1.5 - 100 NO NO 6.0 J NO NO %ug/L L 04/30/10 1.5 - 100 - 3.0 J 3.5 J 4.6 J NO 10/111 0 1.5 - 100 - NO NO NO NO %ug/L L 05/12J 1 1.2 - 100 9.7 J 7.5 J NO NO NO 10/07/11 1.2 - 100 NO NO NO NO NO %ug/L L 04/19/12 1.2 - 100 NO NO NO NO NO 10/26/12 1.2 - 100 NO 4.4 J NO NO NO %ug/L L 04/25/13 0.96 - 100 1.0 J 1.0 J NO NO NO 09/12/13 1.2 - 100 NO NO NO NO NO %ug/L L 04/25/14 1.2 - 100 NO NO NO NO NO 101021 4 1.2 - 100 NO NO NO NO NO %ug/L L 04/0615 1.2 - 100 NO NO NO NO NO ug/L 10/07/15 1.2 - 100 NO NO NO NO NO ug/L 04/20/i6 1.2 - 100 NO NO NO NO NO ug/L 09/26/i6 10 - 100 NO 11 J NO ND NO ug/L 04/28/17 10 - 100 23 B 19 B 19 B 36 B 33 J ug/L 10/17/17 10 - 100 NO NO NO NO NO ug/L 04/16/18 10 - 100 NO ND ND NO ND ug/L 10/18/18 10 20 - NO NO ND NO ND ug/L 04/12/19 10 20 - NO NO ND NO ND ug/L 10/08/19 10 20 - NO NO ND NO ND ug/L 04/20/20 10 20 - NO NO ND NO ND ug/L 10/15/20 10 20 - NO NO ND NO ND ug/L 04/29/21 10 20 - NO NO ND NO ND ug/L 10/14/21 10 20 - NO NO ND NO 28 u /L 04/19/22 10 20 NO ND ND NO ND W,I) GOLDER 8 of 12 August 2022 19131339.105 TABLES Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points owns ream Surface Water (SW Standard) Units Date Detection Quanitation Reporting Monitoring Pin Blanks Limit Limit Limit SW-t SW-2 SWJ SW-4 Chloroform ug/L 03/01/00 - - 5 ND ND ND ND ND No SW Standard ug/L 09/01/00 -- - 5 ND ND ND ND ND ug/L 03/01/01 - - 5 ND ND ND ND ND ug/L 09/01/01 - - 5 ND ND ND ND ND ug/L 03/01/02 - - 5 ND ND ND ND ND ug/L 09/01/02 - - 5 ND ND ND ND ND 04/01/03 - - 5 ND ND ND ND ND %ug/L L 10/01/03 - - 5 ND ND ND ND ND 03/01/04 - - 5 ND ND ND ND ND %ug/L L 09/01/04 - - 5 ND ND ND ND ND ug/L 05/01/OS - - 5 ND ND ND ND ND %L 10/01/0S - - 5 ND ND ND ND ND 04/01/OB - - 5 ND ND ND ND ND %ug/L L 10/0110 - - 5 ND ND ND ND ND up 04/10/07 - - - 0.16 0.16 2.5 J 0.69 J ND 09/25/07 - - - 0.37 J ND 8.4 1.2 J ND %ug/L L 05/05/08 0.2 - 5 - ND ND ND ND 12/04/08 0.2 - 5 - 0.2 0.58 J 0.2 ND %ug/L L 04/13/09 0.2 - 5 - ND ND ND ND ug/L 10/20/09 0.2 - 5 ND ND 2.4 J 2.1 J ND ug/L 04/30/10 0.083 - 5 - ND 1.8 J ND ND ug/L 10/11,10 0.2 - 5 - 0.2 7.4 2.0 J ND ug/L ON2/11 0.7 - 5 ND ND ND J ND ND ug/L 10/07/11 0.7 - 5 ND ND 2.4 J 0.92 J ND ug/L 04/19/12 0.18 - 5 ND ND 1.0 J 0.45 J ND ug/L 10/26/12 0.18 - 5 ND ND 1.2 J ND ND 04/25/13 0.25 - 5 ND ND 0.51 J ND ND %ug/L L 09/12/13 0.18 - 5 ND ND 1.8 J 0.7fi J ND ug/L 04/25/14 0.18 - 5 1.6 J ND 1.7 J 0.46 J ND ug/L 10/02/14 0.18 - 5 1.2 J ND 0.95 J 1.0 J ND ug/L 04/061 5 0.18 - 5 ND ND 0.49 J ND ND ug/L 10/0715 0.18 - 5 ND ND 2.4 J 0.92 J ND ug/L 04/20/16 0.18 - 5 ND ND ND ND ND ug/L 09/26/16 0.18 - 5 ND ND 1.6 J ND ND ug/L 04/28/17 0.18 - 5 ND ND ND ND ND ug/L 10/17/17 0.18 - 5 ND ND ND ND ND ug/L %16/18 0.16 5 ND ND ND ND ND ug/L 10/18/18 0.16 1.0 - ND ND ND ND ND ug/L 04/12/19 0.18 1.0 - ND ND ND ND ND u9/L 10/O8/19 0.16 1.0 - ND ND ND ND ND u9/L 04/20/20 0.16 1.0 - ND ND ND ND ND ug/L 10/15/20 0.18 1.0 - ND ND ND ND ND ug/L 04/29/21 0.18 1.0 - ND ND ND ND ND ug/L 10/14/21 0.18 1.0 - ND ND ND ND ND u /L 1 04/19/22 0.16 1 1.0 ND ND ND ND ND Dibromochloromelhane ug/L 03/01/00 - - 5 ND ND ND ND ND No SW Standard ug/L 03/01/01 - - 5 ND ND ND ND ND ug/L 03/01/02 - - 5 ND ND ND ND ND ug/L 09/01/02 - - 5 ND ND ND ND ND ug/L 04/01/03 - - 5 ND ND ND ND ND ug/L 10/01/03 - - 5 ND ND ND ND ND ug/L 03/01/04 - - 5 ND ND ND ND ND ug/L 09/01/04 - - 5 ND ND ND ND ND ug/L 05/01/OS - - 5 ND ND ND ND ND ug/L 10/01/0S - - 5 ND ND ND ND ND ug/L 04/01/0B - - 5 ND ND ND ND ND ug/L 04/10/07 - - - ND ND 0.54 J ND ND ug/L 09/25/07 - - - ND ND 2.8 J ND ND ug/L 05/05/08 0.28 - 3 - ND ND ND ND ug/L 12/04/08 0.32 - 3 - ND ND ND ND ug/L 04/13/09 0.32 - 3 - ND ND ND ND ug/L 10/20/09 0.32 - 3 ND ND ND ND ND ug/L 04/30/10 0.067 - 3 - ND ND ND ND ug/L 10/111 0 0.32 - 3 - 0.32 6.6 1.2 J ND ug/L 05/12/11 0.63 - 3 ND ND ND ND ND ug/L 10/07/11 0.63 - 3 ND ND ND ND ND ug/L 04/19/12 0.17 - 3 ND ND ND ND ND ug/L 10/26/12 0.17 - 3 ND ND ND ND ND ug/L 04/25/13 0.49 - 3 ND ND ND ND ND ug/L 09/12/13 0.17 - 3 ND ND ND ND ND ug/L 04/25/14 0.17 - 3 ND ND ND ND ND ug/L 10/02/14 0.17 - 3 ND ND ND ND ND ug/L 04/06/15 0.17 - 3 ND ND ND ND ND ug/L 10/07/15 0.17 - 3 ND ND ND ND ND ug/L 04/20/i6 0.17 - 3 ND ND ND ND ND ug/L 09/26/i6 0.17 - 3 ND ND ND ND ND ug/L 04/28/17 0.17 - 3 ND ND ND ND ND ug/L 10/17/17 0.17 - 3 ND ND ND ND ND ug/L %16/18 0.17 3 ND ND ND ND ND ug/L 10/18/18 0.17 1.0 - ND ND ND ND ND ug/L 04/1PJ19 0.17 1.0 - ND ND ND ND ND u9/L 10/OB/19 0.17 1.0 - ND ND ND ND ND ug/L 04/20/20 0.17 1.0 - ND ND ND ND ND ug/L 10/15/20 0.17 1.0 - ND ND ND ND ND ug/L 04/29/21 0.17 1.0 - ND ND ND ND ND ug/L 10/14/21 0.17 1.0 - ND ND ND ND ND u /L 04/19/22 0.17 1.0 ND ND ND ND ND W,I) GOLDER 9 of 12 August 2022 19131339.105 TABLES Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points owns ream Surface Water (SW Standard) Units Data Detection Quanitation Reporting Monitoring Pin Blanks Limit Limit Limit SW-t SW-2 SWJ SW-4 1,4-Dichlorob enzene ug/L 03/01/00 - - 5 ND ND ND ND ND SW Standard=100 u9/L ug/L 03/01/01 -- - 5 ND ND ND ND ND ug/L 03/01/02 - - 5 ND ND ND ND ND ug/L 09/01/02 - - 5 ND ND ND ND ND 04/01/03 - - 5 ND ND ND ND ND %ug/L L 10/01/03 - - 5 ND ND ND ND ND 03/01/04 - - 5 ND ND ND ND ND %ug/L L 09/01/04 - - 5 ND ND ND ND ND ug/L 05/01/OS - - 5 ND ND ND ND ND %L 10/01/0S - - 5 ND ND ND ND ND 04/61/D6 - - 5 ND ND ND ND ND %ug/L L 04/10/07 - - - ND ND ND ND ND ug/L 09/25/07 - - - ND ND ND ND ND %L 05/05/08 0.2 - 1 - ND ND ND ND 12/0/08 0.38 - 1 - ND ND ND ND %ug/L L 04/13/09 0.38 - 1 - ND ND ND ND 10/20/09 0.38 - 1 ND ND ND ND ND %ug/L L 04/30/10 0.1 - 1 - ND ND ND ND 10/11,10 0.38 - 1 - ND ND ND ND %ug/L L ON2/11 0.79 - 1 ND ND ND ND ND 10/07/11 0.79 - 1 ND ND ND ND ND %ug/L L 04/19/12 0.19 - 1 ND ND ND ND ND ug/L 10/26/12 0.19 - 1 ND ND ND ND ND ug/L 04/25/13 0.14 - 1 ND ND 0.46 J ND ND ug/L 09/12/13 0.19 - 1 ND ND ND ND ND ug/L 04/25/14 0.19 - 1 ND ND ND ND ND ug/L 101021 4 0.19 - 1 ND ND ND ND ND ug/L 04/061 5 0.19 - 1 ND ND ND ND ND ug/L 10/0715 0.19 - 1 ND ND ND ND ND ug/L 04/20/i6 0.19 - 1 ND ND ND ND ND ug/L 09/26/16 0.19 - 1 ND ND ND ND ND ug/L 04/28/17 0.19 - 1 ND ND ND ND ND ug/L 10/17/17 0.19 - 1 ND ND ND ND ND ug/L %16/18 0.19 1 ND ND ND ND ND ug/L 10/18/18 0.19 1.0 - ND ND ND ND ND ug/L 04/12/19 0.19 1.0 - ND ND ND ND ND ug/L 10/08/19 0.19 1.0 - ND ND ND ND ND u9/L 04/20/20 0.19 1.0 - ND ND ND ND ND ug/L 10/15/20 0.19 1.0 - ND ND ND ND ND ug/L 04/29/21 0.19 1.0 - ND ND ND ND ND ug/L 10/14/21 0.19 1.0 - ND ND ND ND ND u /L 1 04/19/22 0.19 1 1.0 ND ND ND ND ND Chlommethane ug/L 03/01/00 - - 10 ND ND ND ND ND No SW Standard ug/L 09/01/00 - - 10 ND ND ND ND ND ug/L 03/01/01 - - 10 ND ND ND ND ND up 09/01/01 - - 10 ND ND ND ND ND 03/01/02 - - 10 ND ND ND ND ND %ug/L L 09/01/02 - - 10 ND ND ND ND ND ug/L 04/01/03 - - 10 ND ND ND ND ND ug/L 10/01/03 - - 10 ND ND ND ND ND ug/L 03/01/04 - - 10 ND ND ND ND ND ug/L 09/01/04 - - 10 ND ND ND ND ND ug/L 05/01/OS - - 10 ND ND ND ND ND ug/L 10/01/0S - - 10 ND ND ND ND ND ug/L 04/01/OB - - 10 ND ND ND ND ND ug/L 10/01/0B -- - 10 ND ND ND ND ND ug/L 04/10/07 - - - ND ND ND ND ND ug/L 09/25/07 -- - - ND ND ND ND ND ug/L 05/OS/0 0.23 - 1 - ND ND ND ND ug/L 12/04/088 0.34 - 1 - ND ND ND ND ug/L 04/13/09 0.34 - 1 - ND ND ND ND ug/L 10/20/09 0.34 - 1 ND ND ND ND ND ug/L 04/30/10 0.05 - 1 - ND ND ND ND ug/L 10/111 0 0.34 - 1 - 0.82 B 0.34 0.34 B 0.43 J ug/L 05/1111 0.55 - 1 ND ND ND ND ND ug/L 10.111 0.55 - 1 ND ND ND ND ND ug/L 04/19/12 0.13 - 1 ND ND ND ND ND ug/L 10/26/12 0.13 - 1 ND ND ND ND ND ug/L 04/25/13 0.44 - 1 ND ND ND ND ND ug/L 09/12/13 0.13 - 1 ND ND ND ND ND ug/L 04/25/14 0.13 - 1 ND ND ND ND ND ug/L 10/02/14 0.13 - 1 ND ND ND ND ND ug/L 04/06/15 0.13 - 1 ND ND ND ND ND ug/L 10/07/15 0.13 - 1 ND ND ND ND ND ug/L 04/20/i6 0.13 - 1 ND ND ND ND ND ug/L 09/26/i6 0.13 - 1 ND ND ND ND ND ug/L 04/28/17 0.13 - 1 0.42 J ND ND 0.78 J ND ug/L 10/17/17 0.13 - 1 ND ND ND ND ND ug/L %16/18 0.13 1 ND ND ND ND ND ug/L 10/18/18 0.13 1.0 - ND ND ND ND ND ug/L 04/12/19 0.13 1.0 - ND ND ND ND ND ug/L 10/08/19 0.13 1.0 - ND ND ND ND ND ug/L 04/20/20 0.13 1.0 - ND ND ND ND ND ug/L 10/15/20 0.13 1.0 - ND ND ND ND ND ug/L 04/29/21 0.13 1.0 - ND ND ND ND ND ug/L 10/14/21 0.13 1.0 - ND ND ND ND ND u /L 04/19/22 0.13 1.0 ND ND ND ND ND W,I) GOLDER 10 of 12 August 2022 19131339.105 TABLES Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points owns ream Surface Water (SW Standard) Units Data Detection Quanitation Reporting Monitoring Pin Blanks Limit Limit Limit SW-t SW-2 SWJ SW-4 Methylene Chlonds ug/L 03/01/00 - - 10 NO NO NO NO NO No SW Standard ug/L 09/01/00 -- - 10 NO NO NO NO NO up 03/01/01 - - 10 NO NO NO NO NO ug/L 09/01/01 - - 10 NO NO NO NO NO up 03/01/02 - - 10 NO NO NO NO NO ug/L 09/01/02 - - 10 NO NO NO NO NO 04/01/03 - - 10 NO NO NO NO NO %ug/L !- 10/01/03 - - 10 NO NO NO NO NO 03/01/04 - - 10 NO NO NO NO NO %ug/L !- 09/01/04 - - 10 NO NO NO NO NO ug/L 05/01/OS - - 10 NO NO NO NO NO %!- 10/01/0S - - 10 NO NO NO NO NO 04/01/OB - - 10 NO NO NO NO NO %ug/L !- 10/0110 - - 10 NO NO NO NO NO up 04/10/07 - - - NO NO NO NO NO 09/25/07 - - - NO NO NO NO NO %ug/L !- 05/05/08 0.24 - 1 - NO NO NO NO 12/04/08 0.53 - 1 - NO NO NO NO %ug/L !- 04/13/09 0.53 - 1 - NO NO NO NO ug/L 10/20/09 0.53 - 1 NO NO NO NO NO ug/L 04/30/10 0.07 - 1 - NO NO NO NO ug/L 10/11,10 0.53 - 1 - NO NO NO NO ug/L ON2/11 0.14 - 1 NO NO NO NO NO ug/L 10/07/11 0.14 - 1 NO NO NO NO NO ug/L 04/19/12 0.23 - 1 NO NO NO NO NO ug/L 10/26/12 0.23 - 1 NO NO NO NO NO ug/L 04/25/13 0.5 - 1 NO NO NO NO NO ug/L 09/12/13 0.23 - 1 NO NO NO NO NO ug/L 04/25/14 0.23 - 1 NO NO NO NO NO ug/L 101021 4 0.23 - 1 NO NO NO NO NO ug/L 04/061 5 0.23 - 1 NO NO NO NO NO ug/L 10/0715 0.23 - 1 NO NO NO NO NO ug/L 04/20/16 0.23 - 1 NO NO NO NO NO ug/L 09/26/16 0.23 - 1 NO NO NO NO NO ug/L 04/28/17 0.23 - 1 NO NO NO NO NO ug/L 10/17/17 0.23 - 1 NO NO NO NO NO ug/L %16/18 0.23 1 NO NO ND NO ND ug/L 10/18/18 0.23 1.0 - NO NO ND NO ND ug/L 04/12/19 0.23 1.0 - NO NO ND NO 0.73 J ug/L 10/08/19 0.23 1.0 - NO NO ND NO NO u9/L 04/20/20 0.23 1.0 - NO NO ND NO ND ug/L 10/15/20 0.23 1.0 - NO NO ND NO ND ug/L 04/29/21 0.23 1.0 - NO NO ND NO NO ug/L 10/14/21 0.23 1.0 - NO NO NO NO NO u /L 1 04/19/22 0.23 1 1.0 NO NO NO NO ND Trichlomethene ug/L 03/01/00 - - 5 ND NO NO NO NO SW Standard ug/L 09/01/00 - - 5 NO NO NO NO NO Human Health = 30 ug/L ug/L 03/01/01 - - 5 NO NO NO NO NO ug/L 09/01/01 - - 5 NO NO NO NO NO ug/L 03/01/02 - - 5 NO NO NO NO NO ug/L 09/01/02 - - 5 NO NO NO NO NO ug/L 04/01/03 - - 5 NO NO NO NO NO ug/L 10/01/03 - - 5 NO NO NO NO NO ug/L 03/01/04 - - 5 NO NO NO NO NO ug/L 09/01/04 - - 5 NO NO NO NO NO ug/L 05/01/OS - - 5 NO NO NO NO NO ug/L 10/01/0S - - 5 NO NO NO NO NO ug/L 04/01/OB - - 5 NO NO NO NO NO ug/L 10/01/0B -- - 5 NO NO NO NO NO ug/L 04/10/07 - - - NO NO NO NO NO ug/L 09/25/07 -- - - NO NO NO NO NO ug/L 05/OS/0 0.25 - 1 - NO NO NO NO ug/L 12/04/088 0.38 - 1 - NO NO NO NO ug/L 04/13/09 0.38 - 1 - NO NO NO NO ug/L 10/20/09 0.38 - 1 NO NO NO NO NO ug/L 04/30/10 0.13 - 1 - NO NO NO NO ug/L 10/111 0 0.38 - 1 - NO NO NO NO ug/L 05/12/11 0.72 - 1 NO NO NO NO NO ug/L 10/07/11 0.72 - 1 NO NO NO NO NO ug/L 04/19/12 0.15 - 1 NO NO 0.69 J NO NO ug/L 10/26/12 0.15 - 1 NO NO NO NO NO ug/L 04/25/13 0.23 - 1 NO NO NO NO NO ug/L 09/12/13 0.15 - 1 NO NO NO NO NO ug/L 04/25/14 0.15 - 1 NO NO NO NO NO ug/L 101021 4 0.15 - 1 NO NO NO NO NO ug/L 04/0615 0.15 - 1 NO NO NO NO NO ug/L 10/07/15 0.15 - 1 NO NO NO NO NO ug/L 04/20/i6 0.15 - 1 NO NO NO NO NO ug/L 09/26/i6 0.15 - 1 NO NO NO NO NO ug/L 04/28/17 0.15 - 1 NO NO NO NO NO ug/L 10/17/17 0.15 - 1 NO NO NO NO NO ug/L 04/16/18 0.15 1 NO NO ND NO NO ug/L 10/18/18 0.15 1.0 - NO NO ND NO NO ug/L 04/1PJ19 0.15 1.0 - NO NO ND NO ND ug/L 10/08/19 0.15 1.0 - NO NO NO NO NO ug/L 04/20/20 0.15 1.0 - NO NO ND NO ND ug/L 10/15/20 0.15 1.0 - NO NO NO NO NO ug/L 04/29/21 0.15 1.0 - NO NO NO NO NO ug/L 10/14/21 0.15 1.0 - NO NO ND NO NO u /L 04/19/22 0.15 1.0 NO NO ND NO NO W,I) GOLDER 11 of 12 August 2022 19131339.105 TABLES Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points owns ream Surface Water (SW Standard) Units Date Detection Quanitation Reporting Monitoring Pin Blanks Limit Limit Limit SW-t SW-2 SWJ SW-4 Xylenes(Total: ug/L 09/25/07 -- -- NO NO NO NO NO ug/L 05/05/08 0.67 5 - NO NO NO - ug/L 12/04/08 0.4 5 - NO NO NO - ug/L 04/13/09 0.4 5 - NO NO NO - ug/L 10/20/09 0.4 5 NO NO NO NO NO ug/L 04/30/10 0.22 5 - NO NO NO - ug/L 10/11/10 04 5 - NO NO NO NO ug/L 05/12/11 ill 5 NO NO NO NO - ug/L 10/07/11 2.1 5 NO NO NO NO - ug/L 04/19/12 0.45 5 NO NO NO NO - ug/L 10/26/12 0.45 5 NO NO NO NO - ug/L 04/25/13 0.67 5 NO NO NO NO - %!_ 09/12/13 0.45 5 NO NO NO NO - ug/L 04/25/14 0.45 5 NO NO NO NO - ug/L 10/02/14 0.45 5 NO NO NO NO - ug/L 04/061 5 0.45 5 NO NO NO NO - ug/L 10/071 5 0.45 5 NO NO NO NO - ug/L 04/2016 0.45 5 NO NO NO NO - ug/L 09/26/16 0.45 5 NO NO NO NO - ug/L 04/28/17 0.45 5 NO NO NO NO NO ug/L 10/17/17 0.45 5 NO NO NO NO ND ug/L 04/16/18 0.45 5 NO NO NO NO ND ug/L 10/18/18 0.45 3 NO NO NO NO ND ug/L 04/12/19 0.45 3.0 - NO NO NO NO ND u9/L 10/08/19 0.45 3.0 - NO NO NO NO ND u9/L 04/20/20 0.45 3.0 - NO NO NO NO ND ug/L 10/15/20 0.45 3.0 - ND ND ND ND ND ug/L 04/29/21 0.45 3.0 - NO NO NO NO NO ug/L 10/14/21 0.45 3.0 - NO NO NO NO NO u /L 1 04/19/22 0.45 1 3.0 NO NO NO NO NO 1,4-Dioxane ug 10818 .2 1..2 2...0 NO NO NO 2.1 NO (SW Standard=80 ug/L) 12/1 2.0 NO 1.6 J NO NO NO L ug/L 10/08/19 12 20 NO 13 ND 1.2 J ND ug/L 04/20/2 08 20 NO 16 J N 0.89 J N ugL 10/15/20 0.80 20 NO 12 J N NO NO ug/L 4/29/21 00 2.0 NO 1.7 J NO 1.0 J NO u 10/14/21 08 8gL 20 D NO 14 J NO 0.92 J NO D u /L 04/19/22 0.80 17 J NO D Notes: B = blank -qualified date Shaded = c centration, above awta standards are shadec Bold =concentrations above chronic standards are boldec Data prior to April 2017 provided by SBME Engineering # = EPA Action Level = EPA Secondary MCL Blanks = field, trip and method blank; IMAC = Interim Maximum Allowable Concentration (under NC 2L Rules EPA MCL = United Stales Environmental Protection Agency Maximum Contaminant LevE MDL = laboratory method detection limi ug/L = micrograms per liter of = milligrams per Zile nM = nano mols SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starling on 01/18/07 -= no data available or no limit establishe NC 2L = North Carolina Water Quality Standarc NO = not detected above the laboratory detection limit or stated reporting lion J = and PQL. The following dilutions were noted for the April 2022 event: antimony & thallium by 2X (all points laboratory electronic files. Hardness values collected last during the April 2021 event full SWA = 116, SW-2 = 103, SW-3 = 89, SW-4 = 143 W,I) GOLDER 12oflz August 2022 19131339.105 TABLE 7 Summary of Surface Water Field Parameters Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Downstream Surface (SW Standard) Units Date Water Monitoring Points SW-1 SW-2 SW-3 SW4 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 S.U. 09/13/00 7.56 7.31 ND 7.25 S.U. 03/12/01 7.51 7.29 7.29 7.24 S.U. 09/13/01 7.51 7.51 7.22 7.24 S.U. 03/07/02 7.20 7.26 7.04 7.20 S.U. 09/18/02 7.43 7.33 -- 7.36 S.U. 04/15/03 7.87 7.60 7.61 7.50 S.U. 10/15/03 7.26 6.80 6.98 7.15 S.U. 03/24/04 9.50 8.80 8.99 8.63 S.U. 09/22/04 7.76 7.26 7.61 7.61 S.U. 05/10/05 9.56 9.41 9.36 9.45 S.U. 10/11/05 7.37 7.07 7.19 7.17 S.U. 04/24/06 7.11 6.99 6.86 7.20 S.U. 10/16/06 -- -- -- -- S.U. 04/10/07 6.24 6.64 6.55 7.02 S.U. 09/25/07 6.81 7.28 6.28 7.36 S.U. 05/02/08 -- -- -- -- S.U. 12/05/08 -- 7.82 7.56 7.85 S.U. 04/16/09 -- 8.01 8.13 7.89 S.U. 10/07/09 -- -- -- -- S.U. 04/28/10 -- -- -- -- S.U. 10/05/10 -- 8.05 7.65 8.05 S.U. 05/10/11 7.74 7.74 7.71 7.64 S.U. 10/06/11 7.21 7.26 6.90 7.22 S.U. 04/16/12 -- -- -- -- S.U. 10/24/12 -- -- -- -- S.U. 04/24/13 6.97 7.24 6.92 7.16 S.U. 09/09/13 7.68 8.30 7.59 7.76 S.U. 04/22/14 7.54 7.29 7.30 7.37 S.U. 10/01/14 8.03 8.03 7.88 7.72 S.U. 04/07/15 8.13 7.77 7.59 7.84 S.U. 10/06/15 7.27 7.37 7.34 7.62 S.U. 04/18/16 7.57 7.68 7.56 7.29 S.U. 09/26/16 7.22 6.75 7.21 7.30 S.U. 04/25/17 7.41 7.40 7.14 7.28 S.U. 10/16/17 7.38 6.88 7.07 7.45 S.U. 04/16/18 7.48 7.38 7.42 7.67 S.U. 10/18/18 7.49 8.01 7.50 7.43 S.U. 04/08/19 7.07 6.50 7.69 7.28 S.U. 10/07/19 7.56 7.07 7.54 7.42 S.U. 04/20/20 8.00 7.40 7.72 7.88 S.U. 10/15/20 7.65 7.22 7.76 7.50 S.U. 04/28/21 7.57 7.46 7.44 7.46 S.U. 10/14/21 6.33 7.22 7.19 7.62 S.U. 04/19/22 7.71 7.52 7.53 7.55 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 us/cm 09/13/00 303 233 ND 471 us/cm 03/12/01 6919 6145 6145 6393 us/cm 09/13/01 6919 7324 6063 6393 us/cm 03/07/02 420 377 577 561 us/cm 09/18/02 248 271 -- 449 us/cm 04/15/03 74 254 261 345 us/cm 10/15/03 215 256 357 334 us/cm 03/24/04 293 253 410 378 us/cm 09/22/04 242 223 234 424 us/cm 05/10/05 283 271 391 387 us/cm 10/11/05 167 215 319 264 us/cm 04/24/06 195 182 335 286 us/cm 10/16/06 -- -- -- -- us/cm 04/10/07 31.9 28.9 43.6 42.9 us/cm 09/25/07 31.0 13.0 57.0 53.0 us/cm 05/02/08 -- -- -- -- us/cm 12/05/08 -- 31.6 32.6 31.1 us/cm 04/16/09 -- 19.8 23.8 26.5 us/cm 10/07/09 -- -- -- -- us/cm 04/28/10 -- -- -- -- us/cm 10/05/10 -- 27.9 54 38.9 us/cm 05/10/11 256 209 345 412 us/cm 10/06/11 309 218 529 462 us/cm 04/16/12 -- -- -- -- us/cm 10/24/12 -- -- -- -- us/cm 04/24/13 237 242 381 362 us/cm 09/09/13 327 266 461 439 us/cm 04/22/14 337 275 430 375 us/cm 10/01/14 276 228 454 444 us/cm 04/07/15 318 255 400 378 us/cm 10/06/15 229 151 337 299 us/cm 04/18/16 254 183 313 307 us/cm 09/26/16 293 214 439 412 us/cm 04/25/17 211 198 318 272 us/cm 10/16/17 209 171 211 241 us/cm 04/16/18 233 215 234 217 us/cm 10/18/18 191 264 159 209 us/cm 04/08/19 129 210 158 270 us/cm 10/07/19 308 219 290 320 us/cm 04/20/20 189 212 194 192 us/cm 10/15/20 221 192 216 221 us/cm 04/28/21 251 208 228 259 us/cm 10/14/21 201 216 260 221 us/cm 04/19/22 262 204 202 225 1\ti11 GOLDER 1 of2 August 2022 19131339.105 TABLE 7 Summary of Surface Water Field Parameters Detected Constituents White Street Landfill - Phase III, Permit No. 41-03 Greensboro, North Carolina Downstream Surface Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points (SW Standard) Units Date Water Monitoring Points SWA SW-2 SW-3 SW-4 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 °C 09/13/00 25.27 23.45 -- 24.96 °C 03/12/01 14.86 16.71 16.71 15.51 °C 09/13/01 14.86 16.65 16.74 15.51 °C 03/07/02 12.12 13.02 16.45 14.40 °C 09/18/02 18.66 16.70 -- 19.05 °C 04/15/03 21.65 22.24 20.92 20.11 °C 10/15/03 17.39 18.39 20.06 18.45 °C 03/24/04 16.00 18.06 17.17 15.83 °C 09/22/04 22.67 21.95 25.28 24.17 °C 05/10/05 24.09 22.85 23.97 23.69 °C 10/11/05 18.60 18.30 20.60 20.00 °C 04/24/06 18.30 16.26 18.47 19.05 °C 10/16/06 -- -- -- -- °C 04/10/07 10.55 8.05 12.20 14.82 °C 09/25/07 17.06 21.61 23.84 18.61 °C 05/02/08 -- -- -- -- °C 12/05/08 -- 7.00 11.30 9.50 °C 04/16/09 -- 12.20 14.30 14.50 °C 10/07/09 -- -- -- -- °C 04/28/10 -- -- -- -- °C 10/05/10 -- -- -- -- °C 05/1 0/1 1 19.10 17.50 19.30 19.40 °C 10/06/11 16.16 13.10 19.10 17.80 °C 04/16/12 -- -- -- -- °C 10/24/12 -- -- -- -- °C 04/24/13 16.35 14.24 17.40 16.28 °C 09/09/13 24.70 22.80 25.50 24.80 °C 04/22/14 15.70 12.90 16.80 17.70 °C 10/01/14 19.33 19.21 21.28 19.92 °C 04/07/15 17.50 16.70 18.50 17.90 °C 10/06/15 18.76 17.11 21.82 20.90 °C 04/18/16 18.85 18.38 19.83 19.23 °C 09/26/16 21.60 20.60 23.80 22.50 °C 04/25/17 21.17 19.60 20.20 20.56 °C 10/16/17 15.42 15.62 11.55 16.71 °C 04/16/18 11.75 9.66 8.67 12.24 °C 10/18/18 14.7 14.9 14.9 13.2 °C 04/08/19 17.4 15.7 19.1 17.5 °C 10/07/19 20.0 18.6 19.7 19.8 °C 04/20/20 16.8 15.7 16.4 15.5 °C 10/15/20 18.5 17.2 18.1 16.6 °C 04/28/21 21.3 19.9 17.6 20.5 °C 10/14/21 20.4 18.7 7.9 19.2 °C 04/19/22 15.1 12.9 14.7 13.5 Turbidity (Field) NTU 04/25/17 13.9 7.05 96.5 14.7 NTU 10/16/17 5.89 2.71 73.8 8.40 NTU 04/16/18 13.9 12.5 14.6 26.3 NTU 10/1 8/1 8 4.94 4.84 3.77 9.87 NTU 04/18/19 4.04 26.1 16.5 5.24 NTU 10/07/19 4.28 3.84 3.61 4.98 NTU 04/20/20 8.23 3.59 9.71 25.4 NTU 10/15/20 4.81 3.64 4.86 6.88 NTU 04/28/21 4.18 4.83 30.4 6.19 NTU 10/14/21 3.74 7.52 10.1 4.25 NTU 04/19/22 8.13 6.75 6.57 9.35 Oxidation Reduction Potential (field) mV 04/25/17 69.8 50.6 72.3 79.4 mV 10/16/17 81.7 60.9 174.0 81.3 mV 04/16/18 119.5 95.2 202.0 190.5 mV 10/18/18 115.1 61.7 97.2 143.1 mV 04/08/19 124.5 143.2 5.3 101.8 mV 10/07/19 137.1 17.2 179.6 159.5 mV 04/20/20 179.1 7.7 117.5 144.2 mV 10/15/20 198.9 -2.6 190.0 147.3 mV 04/28/21 115.3 -32.8 236.6 154.1 mV 10/14/21 301.3 -13.1 231.6 171.2 mV 04/1g/22 127.2 45.0 90.0 172.8 Dissolved Oxygen (field) mg/L 04/25/17 7.22 7.50 7.44 6.91 mg IL 10/16/17 8.33 8.08 8.37 8.01 mg/L 04/16/18 8.01 8.97 7.92 7.18 mg IL 10/18/18 5.95 10.74 6.99 7.06 mg/L 04/08/19 6.91 7.94 6.73 7.19 mg IL 10/07/19 5.32 4.89 5.90 5.03 mg/L 04/20/20 9.06 9.38 9.07 7.65 mg/L 10/15/20 7.37 8.20 7.47 8.05 mg/L 04/28/21 7.34 8.91 7.60 8.04 mg/L 10/14/21 7.21 8.24 9.31 8.35 m /L 04/19/22 7.18 9.70 9.34 8.35 Notes: S.U. = Standard Units NTU = Nephelometric Turbidity Units US/cm = microsiemens per centimeter mg/L = miIligramer per liter - = no data available Data prior to April 2017 provided by SBME Engineering 1\ti11 GOLDER zolz A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Antimony ug/L 09/01/00 -- - 30 ND ND ug/L 03/01/01 -- - 30 ND ND ug/L 09/01/01 -- -- 30 ND ND ug/L 03/01/02 -- -- 30 ND ND ug/L 09/01/02 -- -- 30 ND ND ug/L 04/01/03 - -- 30 ND ND ug/L 10/01/03 - -- 30 ND ND ug/L 03/01/04 - -- 30 ND ND ug/L 10/01/04 - -- 30 ND ND ug/L 05/01/05 - -- 30 ND ND ug/L 10/01/05 - -- 30 ND ND ug/L 04/01/06 - -- 30 ND ND ug/L 10/01/06 - -- 30 99 ND ug/L 04/10/07 - -- 6 56.1 ND ug/L 09/25/07 - -- 6 17.7 ND ug/L 05/05/08 0.68 -- 6 19.2 ND ug/L 12/04/08 0.68 -- 6 19.6 ND ug/L 04/13/09 0.68 -- 6 76.9 ND ug/L 10/09/09 0.73 -- 6 17.1 J ND ug/L 04/29/10 2.2 -- 6 12.4 J ND ug/L 10/05/10 2.2 -- 6 19.4 J ND ug/L 05/10/11 2.2 -- 6 15.7 J ND ug/L 10/04/11 2.2 -- 6 56.6 ND ug/L 04/17/12 2.2 -- 6 29.2 ND ug/L 10/24/12 2.2 -- 6 34.7 ND ug/L 04/25/13 2.2 -- 6 ND ND ug/L 09/12/13 2.2 -- 6 18.1 J ND ug/L 04/23/14 2.2 -- 6 3.40 J ND ug/L 10/01/14 2.2 -- 6 16.00 J ND ug/L 04/06/15 2.2 -- 6 3.16 J ND ug/L 10/07/15 2.2 -- 6 5.67 J ND ug/L 04/19/16 2.2 -- 6 2.54 ND ug/L 09/28/16 2.2 -- 6 ND ND ug/L 04/27/17 3.7 -- 6 10.9 J ND ug/L 10/18/17 3.7 -- 6 6.77 J ND ug/L 04/16/18 3.7 -- 6 4.32 J ND ug/L 10/17/18 3.7 5.00 -- 4.98 J ND ug/L 04/11/19 3.7 10.0 -- 17.7 ND ug/L 10/09/19 0.74 2.00 -- 7.52 ND ug/L 04/20/20 3.7 10.0 -- ND ND ug/L 10/15/20 3.7 10.0 -- 6.43 J ND ug/L 04/28/21 3.7 10.0 -- ND ND ug/L 10/12/21 1.5 4.00 -- 4.37 ND u /L 04/19/22 3.7 10.0 ND ND Arsenic ug/L 09/01/00 -- - 10 ND ND ug/L 03/01/01 -- - 10 ND ND ug/L 09/01/01 -- - 10 ND ND ug/L 03/01/02 -- - 10 ND ND ug/L 09/01/02 -- - 10 ND ND ug/L 04/01/03 -- - 10 ND ND ug/L 10/01/03 -- - 10 ND ND ug/L 03/01/04 -- - 10 ND ND ug/L 10/01/04 -- - 10 ND ND ug/L O5/01/05 -- - 10 ND ND ug/L 10/01/05 -- - 10 ND ND ug/L 04/01/06 -- - 10 23.4 ND+K2033 ug/L 10/01/06 -- - 10 94.5 ND ug/L 04/10/07 -- - 10 23.4 ND ug/L 09/25/07 -- - 10 17.6 ND ug/L O5/05/08 2.0 - 10 2.50 J ND ug/L 12/04/08 2.8 - 10 26.4 ND ug/L 04/13/09 2.8 - 10 282 ND ug/L 10/09/09 2.8 -- 10 76.6 ND ug/L 04/29/10 2.8 -- 10 40.0 ND ug/L 10/05/10 2.8 -- 10 41.5 B -- ug/L O5/10/11 2.8 -- 10 53.9 ND ug/L 10/04/11 2.8 -- 10 83.6 ND ug/L 04/17/12 2.8 -- 10 113 ND ug/L 10/24/12 2.8 -- 10 193 ND ug/L 04/25/13 2.8 -- 10 9.93 J ND ug/L 09/12/13 5.4 -- 10 53.3 ND ug/L 04/23/14 5.4 -- 10 6.20 J ND ug/L 10/01/14 5.4 -- 10 50.8 ND ug/L 04/06/15 6.8 -- 10 ND ND ug/L 10/07/15 6.8 -- 10 7.50 J ND ug/L 04/19/16 6.8 - 10 16.6 ND ug/L 09/28/16 6.8 - 10 24.3 ND ug/L 04/27/17 6.8 -- 10 13.2 ND ug/L 10/18/17 6.8 -- 10 16.8 ND ug/L 04/16/18 6.8 -- 10 ND ND ug/L 10/17/18 7.6 10.0 -- ND ND ug/L 04/11/19 7.6 10.0 -- ND ND ug/L 10/09/19 7.6 10.0 -- ND ND ug/L 04/20/20 7.6 10.0 -- ND ND ug/L 10/15/20 7.6 10.0 -- ND ND ug/L 04/28/21 7.6 10.0 -- ND ND ug/L 10/12/21 7.6 10.0 -- ND ND u /L 04/19/22 7.6 10.0 ND ND \\11l GOLDER 1 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Barium ug/L 09/01/00 -- -- 500 580 ND ug/L 03/01/01 -- -- 500 ND ND ug/L 09/01/01 -- -- 500 550 ND ug/L 03/01/02 -- -- 500 ND ND ug/L 09/01/02 -- -- 500 740 ND ug/L 04/01/03 - -- 500 590 ND ug/L 10/01/03 - -- 500 ND ND ug/L 03/01/04 - -- 500 ND ND ug/L 10/01/04 - -- 500 570 ND ug/L 05/01/05 - -- 500 ND ND ug/L 10/01/05 - -- 500 ND ND ug/L 04/01/06 - -- 500 678 ND ug/L 10/01/06 - -- 500 ND ND ug/L 04/10/07 - -- 100 609 ND ug/L 09/25/07 - -- 100 378 ND ug/L 05/05/08 0.2 -- 100 762 B -- ug/L 12/04/08 1.0 -- 100 577 ND ug/L 04/13/09 4.2 -- 100 544 ND ug/L 10/09/09 1.0 -- 100 456 B -- ug/L 04/29/10 1.0 -- 100 508 ND ug/L 10/05/10 1.0 -- 100 681 ND ug/L 05/10/11 1.0 -- 100 899 ND ug/L 10/04/11 1.0 -- 100 735 ND ug/L 04/17/12 1.0 -- 100 661 ND ug/L 10/24/12 1.0 -- 100 745 ND ug/L 04/25/13 1.0 - 100 466 ND ug/L 09/12/13 1.0 - 100 542 ND ug/L 04/23/14 1.0 - 100 385 ND ug/L 10/01/14 1.0 - 100 701 ND ug/L 04/06/15 1.0 - 100 472 ND ug/L 10/07/15 1.0 - 100 558 ND ug/L 04/19/16 1.0 - 100 544 ND ug/L 09/28/16 1.0 - 100 727 ND ug/L 04/27/17 1.0 -- 100 431 ND ug/L 10/18/17 1.0 -- 100 528 ND ug/L 04/16/18 1.0 -- 100 248 ND ug/L 10/17/18 1.1 10.0 -- 412 ND ug/L 04/11/19 1.1 10.0 -- 486 ND ug/L 10/09/19 1.1 10.0 -- 730 ND ug/L 04/20/20 1.1 10.0 -- 360 ND ug/L 10/15/20 1.1 10.0 -- 351 ND ug/L 04/28/21 1.1 10.0 -- 393 ND ug/L 10/12/21 1.1 10.0 -- 394 ND u /L 04/19/22 1.1 10.0 338 ND Beryllium ug/L 09/01/00 -- -- 2 ND -- ug/L 03/01/01 -- - 2 ND -- ug/L 09/01/01 -- - 2 ND -- ug/L 03/01/02 -- - 2 ND -- ug/L 09/01/02 -- - 2 ND -- ug/L 04/01/03 -- - 2 ND - ug/L 10/01/03 -- - 2 ND - ug/L 03/01/04 -- - 2 ND - ug/L 10/01/04 -- - 2 ND - ug/L O5/01/05 -- - 2 ND - ug/L 10/01/05 -- - 2 ND - ug/L 04/01/06 -- - 2 ND - ug/L 10/01/06 -- - 2 ND - ug/L 04/10/07 -- - 1 ND - ug/L 09/25/07 -- - 1 ND - ug/L O5/05/08 0.70 - 1 ND - ug/L 12/04/08 0.10 - 1 ND - ug/L 04/13/09 0.08 - 1 ND - ug/L 10/09/09 0.10 - 1 ND - ug/L 04/29/10 0.10 - 1 ND - ug/L 10/05/10 0.10 - 1 ND - ug/L O5/10/11 0.10 - 1 ND - ug/L 10/04/11 0.10 - 1 ND - ug/L 04/17/12 0.10 - 1 ND - ug/L 10/24/12 0.10 - 1 ND - ug/L 04/25/13 0.10 - 1 ND - ug/L 09/12/13 0.10 - 1 ND - ug/L 04/23/14 0.10 - 1 ND - ug/L 10/01/14 0.10 - 1 ND - ug/L 04/06/15 0.10 - 1 ND - ug/L 10/07/15 0.10 - 1 ND -- ug/L 04/19/16 0.10 - 1 ND -- ug/L 09/28/16 0.10 - 1 ND -- ug/L 04/27/17 0.13 -- 1 ND ND ug/L 10/18/17 0.13 -- 1 ND ND ug/L 04/16/18 0.13 -- 1 ND ND ug/L 10/17/18 0.16 1.00 -- ND ND ug/L 04/11/19 0.16 1.00 -- ND ND ug/L 10/09/19 0.16 1.00 -- ND ND ug/L 04/20/20 0.16 1.00 -- ND ND ug/L 10/15/20 0.16 1.00 -- ND ND ug/L 04/28/21 0.16 1.00 -- ND ND ug/L 10/12/21 0.16 1.00 -- ND ND ug/L 04/19/22 0.16 1.00 ND ND \\11l GOLDER 2 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Cadmium ug/L 09/01/00 -- -- 1 5 ND ug/L 03/01/01 -- -- 1 21 ND ug/L 09/01/01 -- -- 1 9.7 ND ug/L 03/01/02 -- -- 1 13 ND ug/L 09/01/02 -- -- 1 16 ND ug/L 04/01/03 -- - 1 1.6 ND ug/L 10/01/03 -- - 1 2.2 ND ug/L 03/01/04 -- - 1 2.3 ND ug/L 10/01/04 -- - 1 ND ND ug/L O5/01/05 -- - 1 ND ND ug/L 10/01/05 -- - 1 ND ND ug/L 04/01/06 -- - 1 ND ND ug/L 10/01/06 -- - 1 ND ND ug/L 04/10/07 -- - 1 ND ND ug/L 09/25/07 -- - 1 ND ND ug/L 05/05/08 0.50 - 1 ND ND ug/L 12/04/08 0.36 - 1 ND ND ug/L 04/13/09 0.09 - 1 0.32 J ND ug/L 10/09/09 0.36 - 1 ND ND ug/L 04/29/10 0.36 - 1 ND ND ug/L 10/05/10 0.36 - 1 ND ND ug/L O5/10/11 0.36 - 1 ND ND ug/L 10/04/11 0.36 - 1 ND ND ug/L 04/17/12 0.36 - 1 ND ND ug/L 10/24/12 0.36 - 1 ND ND ug/L 04/25/13 0.36 - 1 ND ND ug/L 09/12/13 0.36 - 1 ND ND ug/L 04/23/14 0.36 - 1 ND ND ug/L 10/01/14 0.36 - 1 ND ND ug/L 04/06/15 0.36 - 1 ND ND ug/L 10/07/15 0.36 - 1 ND ND ug/L 04/19/16 0.36 - 1 ND ND ug/L 09/28/16 0.36 -- 1 ND ND ug/L 04/27/17 0.36 -- 1 ND ND ug/L 10/18/17 0.36 -- 1 ND ND ug/L 04/16/18 0.36 - 1 ND ND ug/L 10/17/18 0.36 1.00 -- ND ND ug/L 04/11/19 0.36 1.00 -- ND ND ug/L 10/09/19 0.36 1.00 -- ND ND ug/L 04/20/20 0.36 1.00 -- ND ND ug/L 10/15/20 0.36 1.00 -- ND ND ug/L 04/28/21 0.36 1.00 -- ND ND ug/L 10/12/21 0.36 1.00 -- ND ND u /L 04/19/22 0.36 1.00 ND ND Chromium ug/L 09/01/00 -- - 10 10 ND ug/L 03/01/01 -- - 10 ND ND ug/L 09/01/01 -- - 10 13 ND ug/L 03/01/02 -- - 10 23 ND ug/L 09/01/02 -- - 10 27 ND ug/L 04/01/03 -- - 10 15 ND ug/L 10/01/03 -- - 10 ND ND ug/L 03/01/04 -- - 10 16 ND ug/L 10/01/04 -- - 10 ND ND ug/L O5/01/05 -- - 10 ND ND ug/L 10/01/05 -- - 10 ND ND ug/L 04/01/06 -- - 10 14.7 ND ug/L 10/01/06 -- - 10 ND ND ug/L 04/10/07 - - 10 35.0 ND ug/L 09/25/07 - -- 10 24.3 ND ug/L 05/05/08 2.0 -- 10 ND ND ug/L 12/04/08 1.0 -- 10 7.00 B -- ug/L 04/13/09 0.7 -- 10 54.7 ND ug/L 10/09/09 1.0 -- 10 76.4 ND ug/L 04/29/10 1.0 - 10 60.5 ND ug/L 10/05/10 1.0 - 10 49.4 ND ug/L 05/10/11 1.0 - 10 77.1 ND ug/L 10/04/11 1.0 - 10 54.4 ND ug/L 04/17/12 1.0 - 10 52.2 ND ug/L 10/24/12 1.0 - 10 38.2 ND ug/L 04/25/13 1.4 - 10 26.3 ND ug/L 09/12/13 1.4 - 10 23.9 ND ug/L 04/23/14 1.4 - 10 14.7 ND ug/L 10/01/14 1.4 - 10 24.6 ND ug/L 04/06/15 1.4 - 10 20.2 ND ug/L 10/07/15 1.4 - 10 14.9 ND ug/L 04/19/16 1.4 - 10 15.8 ND ug/L 09/28/16 1.4 - 10 20.7 ND ug/L 04/27/17 1.4 - 10 15.1 ND ug/L 10/18/17 1.4 -- 10 21.6 ND ug/L 04/16/18 1.4 -- 10 9.03 J ND ug/L 10/17/18 1.4 10.0 -- 17.5 ND ug/L 04/11/19 1.4 10.0 -- 19.6 ND ug/L 10/09/19 1.4 10.0 -- 20.7 ND ug/L 04/20/20 1.4 10.0 -- 10.9 ND ug/L 10/15/20 1.4 10.0 -- 15.1 ND ug/L 04/28/21 1.4 10.0 -- 10.7 ND ug/L 10/12/21 1.4 10.0 -- 14.0 ND u /L 04/19/22 1.4 10.0 10.7 ND \\11l GOLDER 3 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Cobalt ug/L 09/01/00 -- -- 10 ND ND ug/L 03/01/01 -- -- 10 ND ND ug/L 09/01/01 -- -- 10 13 ND ug/L 03/01/02 -- -- 10 25 ND ug/L 09/01/02 -- -- 10 23 ND ug/L 04/01/03 - -- 10 ND ND ug/L 10/01/03 - -- 10 ND ND ug/L 03/01/04 - -- 10 18 ND ug/L 10/01/04 - -- 10 ND ND ug/L 05/01/05 - -- 10 ND ND ug/L 10/01/05 - -- 10 ND ND ug/L 04/01/06 - -- 10 26.6 ND ug/L 10/01/06 - -- 10 ND ND ug/L 04/10/07 - -- 10 25.8 ND ug/L 09/25/07 - -- 10 24.6 ND ug/L 05/05/08 2.0 -- 10 25.8 ND ug/L 12/04/08 1.1 -- 10 25.1 ND ug/L 04/13/09 0.6 -- 10 22.3 ND ug/L 10/09/09 1.1 -- 10 31.1 ND ug/L 04/29/10 1.1 -- 10 28.0 ND ug/L 10/05/10 1.1 -- 10 22.4 ND ug/L 05/10/11 1.1 -- 10 39.8 ND ug/L 10/04/11 1.1 -- 10 25.7 ND ug/L 04/17/12 1.1 -- 10 26.9 ND ug/L 10/24/12 1.1 -- 10 20.0 ND ug/L 04/25/13 1.1 -- 10 14.8 ND ug/L 09/12/13 1.1 -- 10 16.2 ND ug/L 04/23/14 1.1 - 10 10.1 ND ug/L 10/01/14 1.1 - 10 16.2 ND ug/L 04/06/15 1.1 - 10 14.8 ND ug/L 10/07/15 1.1 - 10 20.5 ND ug/L 04/19/16 1.1 - 10 13.6 ND ug/L 09/28/16 1.1 - 10 18.7 ND ug/L 04/27/17 1.1 - 10 21.5 ND ug/L 10/18/17 1.1 - 10 19.4 ND ug/L 04/16/18 1.1 - 10 7.31 J ND ug/L 10/17/18 1.4 10.0 -- 17.7 ND ug/L 04/11/19 1.4 10.0 -- 16.8 ND ug/L 10/09/19 1.4 10.0 -- 19.9 ND ug/L 04/20/20 1.4 10.0 -- 12.0 ND ug/L 10/15/20 1.4 10.0 -- 17.1 ND ug/L 04/28/21 1.4 10.0 -- 12.9 ND ug/L 10/12/21 1.4 10.0 -- 16.6 ND u /L 04/19/22 1.4 10.0 11.9 ND Copper ug/L 09/01/00 -- - 200 ND ND ug/L 03/01/01 -- - 200 ND ND ug/L 09/01/01 -- - 200 ND ND ug/L 03/01/02 -- - 200 ND ND ug/L 09/01/02 -- - 200 ND ND ug/L 04/01/03 -- - 200 ND ND ug/L 10/01/03 -- - 200 ND ND ug/L 03/01/04 -- - 200 ND ND ug/L 10/01/04 -- - 200 ND ND ug/L 05/01/05 -- - 200 ND ND ug/L 10/01/05 -- - 200 ND ND ug/L 04/01/06 -- - 200 ND ND ug/L 10/01/06 -- - 200 ND ND ug/L 04/10/07 -- - 10 ND ND ug/L 09/25/07 -- - 10 ND ND ug/L 05/05/08 0.6 - 10 ND ND ug/L 12/04/08 1.6 - 10 ND ND ug/L 04/13/09 0.81 - 10 ND ND ug/L 10/09/09 1.6 - 10 ND ND ug/L 04/29/10 1.6 - 10 ND ND ug/L 10/05/10 1.6 - 10 ND ND ug/L 05/10/11 1.6 - 10 47.6 ND ug/L 10/04/11 1.6 - 10 ND ND ug/L 04/17/12 1.6 - 10 32.0 ND ug/L 10/24/12 1.6 - 10 4.68 J ND ug/L 04/25/13 1.6 - 10 4.00 J ND ug/L 09/12/13 1.6 - 10 ND ND ug/L 04/23/14 1.6 - 10 ND ND ug/L 10/01/14 1.6 - 10 ND ND ug/L 04/06/15 1.6 - 10 3.68 J ND ug/L 10/07/15 1.6 - 10 16.3 ND ug/L 04/19/16 1.6 - 10 ND ND ug/L 09/28/16 1.6 - 10 6.8 J ND ug/L 04/27/17 1.6 - 10 132 ND ug/L 10/18/17 1.6 - 10 3.71 J ND ug/L 04/16/18 1.6 - 10 19.9 ND ug/L 10/17/18 1.6 10.0 -- ND ND ug/L 04/11/19 1.6 10.0 -- 1.96 J ND ug/L 10/09/19 1.6 10.0 -- 1.91 J ND ug/L 04/20/20 1.6 10.0 -- 2.01 J ND ug/L 10/15/20 1.6 10.0 -- 6.12 J ND ug/L 04/28/21 1.6 10.0 -- ND ND ug/L 10/12/21 1.6 10.0 -- ND 2.62 J u /L 04/19/22 1.6 10.0 ND ND \\11l GOLDER 4 of 22 August2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Lead ug/L 09/01/00 -- -- 10 ND ND ug/L 03/01/01 -- -- 10 ND ND ug/L 09/01/01 -- -- 10 ND ND ug/L 03/01/02 -- -- 10 ND ND ug/L 09/01/02 -- -- 10 13 ND ug/L 04/01/03 - -- 10 ND ND ug/L 10/01/03 - -- 10 ND ND ug/L 03/01/04 - -- 10 ND ND ug/L 10/01/04 - -- 10 ND ND ug/L 05/01/05 - -- 10 ND ND ug/L 10/01/05 - -- 10 ND ND ug/L 04/01/06 - -- 10 ND ND ug/L 10/01/06 - -- 10 ND ND ug/L 04/10/07 - -- 10 4.9 J ND ug/L 09/25/07 - -- 10 ND ND ug/L 05/05/08 2.0 -- 10 3.1 J ND ug/L 12/04/08 1.9 -- 10 2.1 J ND ug/L 04/13/09 1.6 -- 10 5.8 J ND ug/L 10/09/09 1.9 -- 10 10.2 ND ug/L 04/29/10 1.9 -- 10 2.48 J ND ug/L 10/05/10 1.9 -- 10 ND ND ug/L 05/10/11 1.9 -- 10 9.44 J ND ug/L 10/04/11 1.9 -- 10 ND ND ug/L 04/17/12 1.9 -- 10 ND ND ug/L 10/24/12 1.9 -- 10 12.9 ND ug/L 04/25/13 1.9 -- 10 ND ND ug/L 09/12/13 1.9 -- 10 ND ND ug/L 04/23/14 2.1 -- 10 ND ND u9/1- 10/01/14 2.1 -- 10 ND ND ug/L 04/06/15 3.1 -- 10 ND ND ug/L 10/07/15 3.1 -- 10 ND ND ug/L 04/19/16 3.1 -- 10 ND ND ug/L 09/28/16 3.1 -- 10 ND ND ug/L 04/27/17 3.1 -- 10 ND ND ug/L 10/18/17 3.1 -- 10 ND ND ug/L 04/16/18 3.1 -- 10 ND ND ug/L 10/17/18 3.1 10.0 - ND ND ug/L 04/11/19 3.1 10.0 - ND 3.14 J ug/L 10/09/19 3.1 10.0 - ND ND ug/L 04/20/20 3.1 10.0 -- ND ND ug/L 10/15/20 3.1 10.0 -- ND ND ug/L 04/28/21 3.1 10.0 -- 5.18 B 3.20 J ug/L 10/12/21 3.1 10.0 -- ND ND u /L 04/19/22 3.1 10.0 ND ND Nickel ug/L 09/01/00 -- -- 50 ND ND ug/L 03/01/01 -- -- 50 ND ND ug/L 09/01/01 -- -- 50 ND ND ug/L 03/01/02 -- -- 50 110 ND ug/L 09/01/02 -- -- 50 99 ND ug/L 04/01/03 - - 50 75 ND ug/L 10/01/03 - -- 50 ND ND ug/L 03/01/04 - -- 50 ND ND ug/L 10/01/04 - -- 50 61 ND ug/L O5/01/05 - -- 50 300 ND ug/L 10/01/05 - -- 50 ND ND ug/L 04/01/06 - -- 50 1189 ND ug/L 10/01/06 - -- 50 228 ND ug/L 04/10/07 - -- 50 164 ND ug/L 09/25/07 - -- 50 168 ND ug/L 05/05/08 2.0 -- 50 189 ND ug/L 12/04/08 1.8 -- 50 177 ND ug/L 04/13/09 0.6 -- 50 137 ND ug/L 10/09/09 1.8 -- 50 174 ND ug/L 04/29/10 1.8 -- 50 136 ND ug/L 10/05/10 1.8 -- 50 129 ND ug/L 05/10/11 1.8 -- 50 168 ND ug/L 10/04/11 1.8 -- 50 155 ND ug/L 04/17/12 1.8 -- 50 153 ND ug/L 10/24/12 1.8 -- 50 148 ND ug/L 04/25/13 1.8 -- 50 89.7 ND ug/L 09/12/13 1.8 -- 50 84.8 ND ug/L 04/23/14 1.8 -- 50 52.7 ND ug/L 10/01/14 1.8 -- 50 109 ND ug/L 04/06/15 1.8 - 50 66.8 ND ug/L 10/07/15 1.8 - 50 135 ND ug/L 04/19/16 2.2 - 50 74.4 ND ug/L 09/28/16 2.2 - 50 106 ND ug/L 04/27/17 2.2 -- 50 94.9 ND ug/L 10/18/17 2.2 -- 50 116 ND ug/L 04/16/18 2.2 -- 50 36.0 J ND ug/L 10/17/18 2.2 10.0 -- 92.6 ND ug/L 04/11/19 2.2 10.0 -- 88.5 ND ug/L 10/09/19 2.2 10.0 -- 120 ND ug/L 04/20/20 2.2 10.0 -- 59.9 ND ug/L 10/15/20 2.2 10.0 -- 86.7 ND ug/L 04/28/21 2.2 10.0 -- 75.5 ND ug/L 10/12/21 2.2 10.0 -- 98.5 ND u /L 04/19/22 2.2 10.0 64.4 ND \\11l GOLDER 5 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Selenium ug/L 09/01/00 -- -- 20 ND ND ug/L 03/01/01 -- -- 20 ND ND ug/L 09/01/01 -- -- 20 ND ND ug/L 03/01/02 -- -- 20 ND ND ug/L 09/01/02 -- -- 20 ND ND ug/L 04/01/03 -- - 20 ND ND ug/L 10/01/03 -- - 20 ND ND ug/L 03/01/04 -- - 20 ND ND ug/L 10/01/04 -- - 20 ND ND ug/L 05/01/05 -- - 20 ND ND ug/L 10/01/05 -- - 20 ND ND ug/L 04/01/06 -- - 20 ND ND ug/L 10/01/06 -- - 20 61.5 ND ug/L 04/10/07 -- - 10 ND ND ug/L 09/25/07 -- - 10 7.6 J ND ug/L 05/05/08 2.0 - 10 ND ND ug/L 12/04/08 2.7 - 10 ND ND ug/L 04/13/09 3.4 - 10 ND ND ug/L 10/09/09 2.7 - 10 ND ND ug/L 04/29/10 8.3 - 10 96.6 ND ug/L 10/05/10 8.3 - 10 60.6 ND ug/L 05/10/11 8.3 - 10 97.2 ND ug/L 10/04/11 2.7 - 10 ND ND ug/L 04/17/12 8.3 - 10 ND ND ug/L 10/24/12 8.3 - 10 ND ND ug/L 04/25/13 8.3 - 10 ND ND ug/L 09/12/13 8.3 - 10 ND ND ug/L 04/23/14 9.1 - 10 ND ND ug/L 10/01/14 9.1 -- 10 ND ND ug/L 04/06/15 9.1 -- 10 ND ND ug/L 10/07/15 9.1 -- 10 ND ND ug/L 04/19/16 9.1 -- 10 ND ND ug/L 09/28/16 9.1 -- 10 ND ND ug/L 04/27/17 6.2 -- 10 ND ND ug/L 10/18/17 6.2 -- 10 ND ND ug/L 04/16/18 6.2 -- 10 ND ND ug/L 10/17/18 6.2 10.0 -- ND ND ug/L 04/11/19 6.2 10.0 -- ND ND ug/L 10/09/19 6.2 10.0 -- ND ND ug/L 04/20/20 6.2 10.0 -- ND ND ug/L 10/15/20 6.2 10.0 -- ND ND ug/L 04/28/21 6.2 10.0 -- ND ND ug/L 10/12/21 6.2 10.0 -- ND ND u /L 04/19/22 6.2 10.0 ND ND Silver ug/L 09/01/00 -- -- 10 ND ND ug/L 03/01/01 -- -- 10 ND ND ug/L 09/01/01 -- -- 10 ND ND ug/L 03/01/02 -- -- 10 20 ND ug/L 09/01/02 -- -- 10 ND ND ug/L 04/01/03 - -- 10 ND ND ug/L 10/01/03 - -- 10 ND ND ug/L 03/01/04 - -- 10 ND ND ug/L 10/01/04 - -- 10 ND ND ug/L 05/01/05 - -- 10 ND ND ug/L 10/01/05 - -- 10 ND ND ug/L 04/01/06 - -- 10 ND ND ug/L 10/01/06 - -- 10 ND ND ug/L 04/10/07 - -- 10 ND ND ug/L 09/25/07 - -- 10 ND ND ug/L 05/05/08 2.0 -- 10 ND ND ug/L 12/04/08 1.9 -- 10 ND ND ug/L 04/13/09 1.0 -- 10 1.20 J ND ug/L 10/09/09 1.9 -- 10 2.14 J ND ug/L 04/29/10 1.9 -- 10 4.18 J ND ug/L 10/05/10 1.9 -- 10 ND ND ug/L 05/10/11 1.9 -- 10 ND ND ug/L 10/04/11 1.9 -- 10 4.14 J ND ug/L 04/17/12 1.9 -- 10 ND ND ug/L 10/24/12 1.9 -- 10 2.67 J ND ug/L 04/25/13 1.9 - 10 ND ND ug/L 09/12/13 1.9 - 10 3.02 J ND ug/L 04/23/14 1.9 - 10 ND ND ug/L 10/01/14 1.9 - 10 ND ND ug/L 04/06/15 1.9 -- 10 ND ND ug/L 10/07/15 1.9 -- 10 ND ND ug/L 04/19/16 1.9 -- 10 ND ND ug/L 09/28/16 1.9 -- 10 ND ND ug/L 04/27/17 1.9 -- 10 ND ND ug/L 10/18/17 1.9 -- 10 ND ND ug/L 04/16/18 1.9 -- 10 ND ND ug/L 10/17/18 1.9 10.0 - ND ND ug/L 04/11/19 1.9 10.0 - ND ND ug/L 10/09/19 1.9 10.0 - ND ND ug/L 04/20/20 1.9 10.0 -- ND ND ug/L 10/15/20 1.9 10.0 -- ND ND ug/L 04/28/21 1.9 10.0 -- ND ND ug/L 10/12/21 1.9 10.0 -- ND ND u /L 04/19/22 1.9 10.0 ND ND \\11l GOLDER 6 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Thallium ug/L 09/01/00 -- -- 10 ND ND ug/L 03/01/01 -- -- 10 ND ND ug/L 09/01/01 -- -- 10 ND ND ug/L 03/01/02 -- -- 10 ND ND ug/L 09/01/02 -- -- 10 ND ND ug/L 04/01/03 - -- 10 ND ND ug/L 10/01/03 - -- 10 ND ND ug/L 03/01/04 - -- 10 ND ND ug/L 10/01/04 - -- 10 ND ND ug/L 05/01/05 - -- 10 ND ND ug/L 10/01/05 - -- 10 ND ND ug/L 04/01/06 - -- 10 ND ND ug/L 10/01/06 - -- 10 ND ND ug/L 04/10/07 - -- 5.5 ND ND ug/L 09/25/07 - -- 5.5 ND ND ug/L 05/05/08 0.036 -- 5.5 ND ND ug/L 12/04/08 0.036 -- 5.5 ND ND ug/L 04/13/09 0.036 -- 5.5 ND ND ug/L 10/09/09 1.1 -- 5.5 3.76 J ND ug/L 04/29/10 1.1 -- 5.5 ND ND ug/L 10/05/10 1.1 -- 5.5 ND ND ug/L 05/10/11 1.1 -- 5.5 18.8 ND ug/L 10/04/11 1.1 -- 5.5 ND ND ug/L 04/17/12 1.1 -- 5.5 ND ND ug/L 10/24/12 1.1 -- 5.5 ND ND ug/L 04/25/13 1.1 -- 5.5 ND ND ug/L 09/12/13 1.1 -- 5.5 ND ND ug/L 04/23/14 1.1 -- 5.5 ND ND ug/L 10/01/14 1.1 - 5.5 ND ND ug/L 04/06/15 1.1 - 5.5 ND ND ug/L 10/07/15 1.1 - 5.5 ND ND ug/L 04/19/16 1.1 - 5.5 ND ND ug/L 09/28/16 1.1 - 5.5 3.74 J ND ug/L 04/27/17 1.1 -- 5.5 1.11 J ND ug/L 10/18/17 1.1 -- 5.5 2.95 J ND ug/L 04/16/18 1.1 -- 5.5 ND ND ug/L 10/17/18 1.1 5.00 -- ND ND ug/L 04/11/19 1.1 10.0 -- ND ND ug/L 10/09/19 0.22 2.00 -- ND ND ug/L 04/20/20 1.1 10.0 -- ND ND ug/L 10/15/20 1.1 10.0 -- ND ND ug/L 04/28/21 1.1 10.0 -- ND ND ug/L 10/12/21 0.44 4.00 -- ND ND u /L 04/19/22 1.10 10.0 ND ND Vanadium ug/L 09/01/00 -- - 40 ND ND ug/L 03/01/01 -- - 40 ND ND ug/L 09/01/01 -- - 40 58 ND ug/L 03/01/02 -- - 40 45 ND ug/L 09/01/02 -- - 40 89 ND ug/L 04/01/03 -- - 40 41 ND ug/L 10/01/03 -- - 40 ND ND ug/L 03/01/04 -- - 40 ND ND ug/L 10/01/04 -- - 40 ND ND ug/L 05/01/05 -- - 40 ND ND ug/L 10/01/05 -- - 40 ND ND ug/L 04/01/06 - - 40 54 ND ug/L 10/01/06 - -- 40 ND ND ug/L 04/10/07 - -- 40 36.2 ND ug/L 09/25/07 - -- 40 38.1 ND ug/L 05/05/08 1.0 -- 25 12.5 J ND ug/L 12/04/08 1.4 -- 25 25.0 ND ug/L 04/13/09 0.7 -- 25 43.1 ND ug/L 10/09/09 1.4 -- 25 65.7 ND ug/L 04/29/10 1.4 -- 25 37.9 ND ug/L 10/05/10 1.4 -- 25 45.4 ND ug/L 05/10/11 1.4 -- 25 64.2 ND ug/L 10/04/11 1.4 -- 25 46.1 ND ug/L 04/17/12 1.4 -- 25 47.5 ND ug/L 10/24/12 1.4 -- 25 44.5 ND ug/L 04/25/13 1.4 -- 25 28.8 ND ug/L 09/12/13 1.4 -- 25 30.8 ND ug/L 04/23/14 1.4 -- 25 19.7 J ND ug/L 10/01/14 1.4 -- 25 29.8 ND ug/L 04/06/15 1.4 -- 25 23.2 J ND ug/L 10/07/15 1.4 -- 25 20.0 J ND ug/L 04/19/16 1.4 - 25 25.3 ND ug/L 09/28/16 1.4 - 25 36.0 ND ug/L 04/27/17 1.4 -- 25 24.5 J ND ug/L 10/18/17 1.4 -- 25 23.8 J ND ug/L 04/16/18 1.4 -- 25 12.5 J ND ug/L 10/17/18 1.4 10.0 -- 15.3 ND ug/L 04/11/19 1.4 10.0 -- 12.7 ND ug/L 10/09/19 1.4 10.0 -- 23.6 ND ug/L 04/20/20 1.4 10.0 -- 11.5 ND ug/L 10/15/20 1.4 10.0 -- 9.20 J ND ug/L 04/28/21 1.4 10.0 -- 3.35 J ND ug/L 10/12/21 1.4 10.0 -- 6.22 J ND u /L 04/19/22 1.4 10.0 3.30 J ND \\11l GOLDER 7 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Zinc ug/L 09/01/00 -- -- 50 120 ND ug/L 03/01/01 -- -- 50 ND ND ug/L 09/01/01 -- -- 50 50 ND ug/L 03/01/02 -- -- 50 80 ND ug/L 09/01/02 -- -- 50 290 ND ug/L 04/01/03 - -- 50 100 ND ug/L 10/01/03 - -- 50 ND ND ug/L 03/01/04 - -- 50 ND ND ug/L 10/01/04 - -- 50 ND ND ug/L 05/01/05 - -- 50 250 ND ug/L 10/01/05 - -- 50 ND ND ug/L 04/01/06 - -- 50 97.2 ND ug/L 10/01/06 - -- 50 57.0 ND ug/L 04/10/07 - -- 10 87.8 ND ug/L 09/25/07 - -- 10 38.9 ND ug/L 05/05/08 1.0 -- 10 54.8 ND ug/L 12/04/08 3.8 -- 10 29.3 ND ug/L 04/13/09 3.4 -- 10 51.1 ND ug/L 10/09/09 3.8 -- 10 159 ND ug/L 04/29/10 3.8 -- 10 48.3 ND ug/L 10/05/10 3.8 -- 10 25.7 ND ug/L 05/10/11 3.8 -- 10 240 ND ug/L 10/04/11 3.8 -- 10 87.2 ND ug/L 04/17/12 3.8 -- 10 104 ND ug/L 10/24/12 3.8 -- 10 31.9 ND ug/L 04/25/13 3.8 -- 10 12.0 ND ug/L 09/12/13 3.8 -- 10 12.8 ND ug/L 04/23/14 3.8 -- 10 9.39 J ND ug/L 10/01/14 3.8 -- 10 16.5 B -- ug/L 04/06/15 3.8 -- 10 7.17 J ND ug/L 10/07/15 3.8 -- 10 59.6 ND ug/L 04/19/16 4.4 -- 10 8.80 J ND ug/L 09/28/16 4.4 -- 10 11.8 ND ug/L 04/27/17 4.4 -- 10 73.1 ND ug/L 10/18/17 4.4 -- 10 11.0 ND ug/L 04/16/18 4.4 -- 10 28.5 ND ug/L 10/17/18 4.4 -- -- 8.43 J ND ug/L 04/11/19 4.4 10.0 -- 9.09 J ND ug/L 10/09/19 4.4 10.0 -- 11.9 ND ug/L 04/20/20 4.4 10.0 -- ND ND ug/L 10/15/20 4.4 10.0 -- 43.7 ND ug/L 04/28/21 4.4 10.0 -- ND ND ug/L 10/12/21 4.4 10.0 -- 5.26 J ND u /L 04/19/22 4.4 10.0 ND ND \\11l GOLDER 8 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Acetone ug/L 09/01/00 -- -- 100 ND ND ug/L 03/01/01 -- -- 100 ND ND ug/L 09/01/01 -- -- 100 1400 ND ug/L 03/01/02 -- -- 100 ND ND ug/L 09/01/02 -- -- 100 ND ND ug/L 04/01/03 -- — 100 490 ND ug/L 10/01/03 -- — 100 830 ND ug/L 03/01/04 -- — 100 ND ND ug/L 10/01/04 -- — 100 ND ND ug/L O5/01/05 -- — 100 ND ND ug/L 10/01/05 -- — 100 ND ND ug/L 04/01/06 -- — 100 1780 ND ug/L 10/01/06 -- — 100 2800 ND ug/L 04/10/07 -- — 100 6800 ND ug/L 09/25/07 -- — 100 31000 ND ug/L 05/05/08 6.2 — 100 1400 ND ug/L 12/04/08 150 — 100 11000 ND ug/L 04/13/09 75 — 100 4100 ND ug/L 10/09/09 150 — 100 28000 ND ug/L 04/29/10 150 — 100 13000 ND ug/L 10/05/10 15 — 100 1100 ND ug/L 05/10/11 24 — 100 3700 ND ug/L 10/04/11 12 — 100 2200 ND ug/L 04/17/12 120 — 100 4800 ND ug/L 10/24/12 24 — 100 1300 ND ug/L 04/25/13 3.8 — 100 630 ND ug/L 09/12/13 12 — 100 400 ND ug/L 04/23/14 12 — 100 440 ND ug/L 10/01/14 24 — 100 1200 ND ug/L 10/01/14 12 — 100 4500 ND ug/L 04/06/15 12 — 100 440 ND ug/L 10/07/15 12 — 100 600 ND ug/L 04/19/16 12 — 100 680 ND ug/L 09/28/16 100 -- 100 410 ND ug/L 04/27/17 100 -- 100 1300 ND ug/L 10/18/17 100 -- 100 290 ND ug/L 04/16/18 100 -- 100 180 J ND ug/L 10/17/18 100 10 -- ND ND ug/L 04/11/19 100 200 -- 470 ND ug/L 10/09/19 100 200 -- 310 ND ug/L 04/20/20 10 20 -- 370 ND ug/L 10/15/20 100 200 -- ND ND ug/L 04/28/21 100 200 -- ND 18 J ug/L 10/12/21 100 200 -- ND 26 u /L 04/19/22 100 200 ND ND \\11l GOLDER 9 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Benzene ug/L 09/01/00 -- -- 5 ND ND ug/L 03/01/01 -- -- 5 ND ND ug/L 09/01/01 -- -- 5 ND ND ug/L 03/01/02 -- -- 5 10 ND ug/L 09/01/02 -- -- 5 ND ND ug/L 04/01/03 -- - 5 ND ND ug/L 10/01/03 -- - 5 8.1 ND ug/L 03/01/04 -- - 5 ND ND ug/L 10/01/04 -- - 5 ND ND ug/L 05/01/05 -- - 5 ND ND ug/L 10/01/05 -- - 5 ND ND ug/L 04/01/06 -- - 5 ND ND ug/L 10/01/06 -- - 5 ND ND ug/L 04/10/07 -- - 5 ND ND ug/L 09/25/07 -- - 5 ND ND ug/L 05/05/08 2.0 - 1 8.4 J ND ug/L 12/04/08 20 - 1 ND ND ug/L 04/13/09 10 - 1 ND ND ug/L 10/09/09 20 - 1 ND ND ug/L 04/29/10 5.0 - 1 ND ND ug/L 10/05/10 2.0 - 1 5.2 J ND ug/L 05/10/11 14 - 1 ND ND ug/L 10/04/11 6.8 - 1 14 ND ug/L 04/17/12 15 - 1 ND ND ug/L 10/24/12 3.0 - 1 ND ND ug/L 04/25/13 1.0 - 1 4.5 ND ug/L 09/12/13 1.5 - 1 4.1 J ND ug/L 04/23/14 1.5 - 1 ND ND ug/L 10/01/14 1.5 - 1 7.7 J ND ug/L 04/06/15 1.5 - 1 ND ND ug/L 10/07/15 1.5 - 1 ND ND ug/L 04/19/16 1.5 - 1 ND ND ug/L 09/28/16 1.5 - 1 ND ND ug/L 04/27/17 1.5 -- 1 ND ND ug/L 10/18/17 1.5 -- 1 ND ND ug/L 04/16/18 1.5 -- 1 ND ND ug/L 10/17/18 1.5 5.0 -- ND ND ug/L 04/11/19 1.5 10 -- 4.9 J ND ug/L 10/09/19 1.5 10 -- 4.3 J ND ug/L 04/20/20 0.15 1.0 -- 0.94 J ND ug/L 10/15/20 1.5 10 -- ND ND ug/L 04/28/21 1.5 10 -- ND ND ug/L 10/12/21 1.5 10 -- ND ND u /L 04/19/22 1.5 10 ND ND Chlorobenzene ug/L 09/01/00 -- - 5 ND ND ug/L 03/01/01 -- - 5 ND ND ug/L 09/01/01 -- - 5 ND ND ug/L 03/01/02 -- - 5 ND ND ug/L 09/01/02 -- -- 5 ND ND ug/L 04/01/03 -- - 5 ND ND ug/L 10/01/03 -- - 5 ND ND ug/L 03/01/04 -- - 5 ND ND ug/L 10/01/04 -- - 5 ND ND ug/L O5/01/05 -- - 5 ND ND ug/L 10/01/05 -- - 5 ND ND ug/L 04/01/06 -- - 5 ND ND ug/L 10/01/06 -- - 5 ND ND ug/L 04/10/07 -- - 3 ND ND ug/L 09/25/07 -- - 3 ND ND ug/L 05/05/08 2.7 - 3 ND ND ug/L 12/04/08 27 - 3 ND ND ug/L 04/13/09 14 - 3 ND ND ug/L 10/09/09 27 - 3 ND ND ug/L 04/29/10 6.9 - 3 ND ND ug/L 10/05/10 2.7 - 3 ND ND ug/L 05/10/11 15 - 3 ND ND ug/L 10/04/11 7.4 - 3 ND ND ug/L 04/17/12 17 - 3 ND ND ug/L 10/24/12 3.4 - 3 ND ND ug/L 04/25/13 1.0 - 3 2.0 J ND ug/L 09/12/13 1.7 - 3 ND ND ug/L 04/23/14 1.7 - 3 ND ND ug/L 10/01/14 1.7 - 3 ND ND ug/L 04/06/15 1.7 - 3 ND ND ug/L 10/07/15 1.7 - 3 ND ND ug/L 04/19/16 1.7 - 3 ND ND ug/L 09/28/16 1.7 - 3 ND ND ug/L 04/27/17 1.7 -- 3 ND ND ug/L 10/18/17 1.7 -- 3 ND ND ug/L 04/16/18 1.7 -- 3 ND ND ug/L 10/17/18 1.7 1.0 -- ND ND ug/L 04/11/19 1.7 10 -- ND ND ug/L 10/09/19 1.7 10 -- ND ND ug/L 04/20/20 0.17 1.0 -- ND ND ug/L 10/15/20 1.7 10 -- ND ND ug/L 04/28/21 1.7 10 -- ND ND ug/L 10/12/21 1.7 10 -- ND ND u /L 04/19/22 1.7 10 ND ND \\11l GOLDER 10 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Chloroethane ug/L 09/01/00 -- -- 10 ND -- ug/L 03/01/01 -- -- 10 ND -- ug/L 09/01/01 -- -- 10 ND -- ug/L 03/01/02 -- -- 10 17 -- ug/L 09/01/02 -- -- 10 ND -- ug/L 04/01/03 -- - 10 ND - ug/L 10/01/03 -- - 10 ND - ug/L 03/01/04 -- - 10 ND - ug/L 10/01/04 -- - 10 ND - ug/L 05/01/05 -- - 10 ND - ug/L 10/01/05 -- - 10 ND - ug/L 04/01/06 -- - 10 ND - ug/L 10/01/06 -- - 10 ND - ug/L 04/10/07 -- - 10 ND - ug/L 09/25/07 -- - 10 ND -- ug/L 05/05/08 3.0 -- 10 ND -- ug/L 12/04/08 30 -- 10 ND -- ug/L 04/13/09 15 -- 10 ND -- ug/L 10/09/09 30 -- 10 ND -- ug/L 04/29/10 18 -- 10 ND -- ug/L 10/05/10 3.0 -- 10 ND -- ug/L 05/10/11 15 -- 10 ND -- ug/L 10/04/11 7.5 -- 10 ND -- ug/L 04/17/12 23 -- 10 ND -- ug/L 10/24/12 4.6 -- 10 ND -- ug/L 04/25/13 2.1 -- 10 ND -- ug/L 09/12/13 2.3 -- 10 ND -- ug/L 04/23/14 2.3 -- 10 ND -- ug/L 10/01/14 2.3 -- 10 ND -- ug/L 04/06/15 2.3 -- 10 ND -- ug/L 10/07/15 2.3 -- 10 ND - ug/L 04/19/16 2.3 - 10 ND -- ug/L 09/28/16 2.3 -- 10 ND -- ug/L 04/27/17 2.3 - 10 ND ND ug/L 10/18/17 2.3 - 10 ND ND ug/L 04/16/18 2.3 - 10 ND ND ug/L 10/17/18 2.3 1.0 - ND ND ug/L 04/11/19 2.3 10 - ND ND ug/L 10/09/19 2.3 10 - ND ND ug/L 04/20/20 0.23 1.0 - ND ND ug/L 10/15/20 2.3 10 -- ND ND ug/L 04/28/21 2.3 10 -- ND ND ug/L 10/12/21 2.3 10 -- ND ND u /L 04/19/22 2.3 10 ND ND 1,4-Dichlorobenzene ug/L 09/01/00 -- -- 5 ND ND ug/L 03/01/01 -- -- 5 ND ND ug/L 09/01/01 -- -- 5 ND ND ug/L 03/01/02 -- -- 5 6.0 ND ug/L 09/01/02 -- -- 5 ND ND ug/L 04/01/03 - -- 5 ND ND ug/L 10/01/03 - -- 5 5.4 ND ug/L 03/01/04 - -- 5 ND ND ug/L 10/01/04 - -- 5 ND ND ug/L O5/01/05 - -- 5 ND ND ug/L 10/01/05 - -- 5 ND ND ug/L 04/01/06 - -- 5 ND ND ug/L 10/01/06 -- -- 5 ND ND ug/L 04/10/07 -- -- 1 ND ND ug/L 09/25/07 -- -- 1 ND ND ug/L 05/05/08 2.0 -- 1 13 ND ug/L 12/04/08 38 -- 1 ND ND ug/L 04/13/09 19 -- 1 31 J ND ug/L 10/09/09 38 -- 1 ND ND ug/L 04/29/10 10 -- 1 ND ND ug/L 10/05/10 3.8 -- 1 23 ND ug/L 05/10/11 16 -- 1 28 ND ug/L 10/04/11 7.9 -- 1 22 ND ug/L 04/17/12 19 -- 1 ND ND ug/L 10/24/12 3.8 -- 1 18 J ND ug/L 04/25/13 0.56 -- 1 14 ND ug/L 09/12/13 1.9 -- 1 11 ND ug/L 04/23/14 1.9 -- 1 9.0 J ND ug/L 10/01/14 1.9 - 1 20 ND ug/L 04/06/15 1.9 - 1 7.7 J ND ug/L 10/07/15 1.9 - 1 6.3 J ND ug/L 04/19/16 1.9 - 1 6.7 J ND ug/L 09/28/16 1.9 - 1 8.8 J ND ug/L 04/27/17 1.9 - 1 9.9 J ND ug/L 10/18/17 1.9 - 1 8.4 J ND ug/L 04/16/18 1.9 -- 1 ND ND ug/L 10/17/18 1.9 1.0 -- ND ND ug/L 04/11/19 1.9 10 -- ND ND ug/L 10/09/19 1.9 10 -- 4.7 J ND ug/L 04/20/20 0.19 1.0 -- 3.0 ND ug/L 10/15/20 1.9 10 -- ND ND ug/L 04/28/21 1.9 10 -- ND ND ug/L 10/12/21 1.9 10 -- ND ND u /L 04/19/22 1.9 10 ND ND \\11l GOLDER 11 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks 1,1-Dichloroethane ug/L 09/01/00 -- -- 5 46 ND ug/L 03/01/01 -- -- 5 ND ND ug/L 09/01/01 -- -- 5 ND ND ug/L 03/01/02 -- -- 5 30 ND ug/L 09/01/02 -- -- 5 28 ND ug/L 04/01/03 -- - 5 27 ND ug/L 10/01/03 -- - 5 5.2 ND ug/L 03/01/04 -- - 5 ND ND ug/L 10/01/04 -- - 5 ND ND ug/L O5/01/05 -- - 5 ND ND ug/L 10/01/05 -- - 5 ND ND ug/L 04/01/06 -- - 5 ND ND ug/L 10/01/06 -- - 5 ND ND ug/L 04/10/07 -- - 5 ND ND ug/L 09/25/07 -- - 5 ND ND ug/L 05/05/08 3.3 - 5 ND ND ug/L 12/04/08 33 - 5 ND ND ug/L 04/13/09 16 - 5 ND ND ug/L 10/09/09 33 - 5 ND ND ug/L 04/29/10 5.0 - 5 ND ND ug/L 10/05/10 3.3 - 5 ND ND ug/L 05/10/11 1.6 - 5 ND ND ug/L 10/04/11 0.8 - 5 ND ND ug/L 04/17/12 13 - 5 ND ND ug/L 10/24/12 2.6 - 5 ND ND ug/L 04/25/13 1.1 - 5 ND ND ug/L 09/12/13 1.3 - 5 ND ND ug/L 04/23/14 1.3 - 5 ND ND ug/L 10/01/14 1.3 - 5 ND ND ug/L 04/06/15 1.3 - 5 ND ND ug/L 10/07/15 1.3 - 5 ND ND ug/L 04/19/16 1.3 - 5 ND ND ug/L 09/28/16 1.3 - 5 ND ND ug/L 04/27/17 1.3 - 5 ND ND ug/L 10/18/17 1.3 - 5 ND ND ug/L 04/16/18 1.3 - 5 ND ND ug/L 10/17/18 1.3 1.0 -- ND ND ug/L 04/11/19 1.3 10 -- ND ND ug/L 10/09/19 1.3 10 -- ND ND ug/L 04/20/20 0.13 1.0 -- ND ND ug/L 10/15/20 1.3 10 -- ND ND ug/L 04/28/21 1.3 10 -- ND ND ug/L 10/12/21 1.3 10 -- ND ND u /L 04/19/22 1.3 10 ND ND cis-1,2-Dichloroethene ug/L 09/01/00 -- - 5 ND ND ug/L 03/01/01 -- - 5 ND ND ug/L 09/01/01 -- - 5 ND ND ug/L 03/01/02 -- - 5 6.4 ND ug/L 09/01/02 -- - 5 ND ND ug/L 04/01/03 -- - 5 ND ND ug/L 10/01/03 -- - 5 ND ND ug/L 03/01/04 -- - 5 ND ND ug/L 10/01/04 -- - 5 ND ND ug/L O5/01/05 -- - 5 ND ND ug/L 10/01/05 -- - 5 ND ND ug/L 04/01/06 -- - 5 ND ND ug/L 10/01/06 -- - 5 ND ND ug/L 04/10/07 -- - 5 ND ND ug/L 09/25/07 -- - 5 ND ND ug/L 05/05/08 3.0 - 5 ND ND ug/L 12/04/08 36 - 5 ND ND ug/L 04/13/09 18 - 5 ND ND ug/L 10/09/09 36 - 5 ND ND ug/L 04/29/10 7.5 - 5 ND ND ug/L 10/05/10 3.6 - 5 10 ND ug/L O5/10/11 14 - 5 ND ND ug/L 10/04/11 7.2 - 5 10 ND ug/L 04/17/12 15 - 5 ND ND ug/L 10/24/12 3.0 - 5 ND ND ug/L 04/25/13 1.1 - 5 5.8 ND ug/L 09/12/13 1.5 - 5 ND ND ug/L 04/23/14 1.5 - 5 ND ND ug/L 10/01/14 1.5 - 5 ND ND ug/L 04/06/15 1.5 - 5 ND ND ug/L 10/07/15 1.5 - 5 ND ND ug/L 04/19/16 1.5 - 5 ND ND ug/L 09/28/16 1.5 - 5 ND ND ug/L 04/27/17 1.5 - 5 ND ND ug/L 10/18/17 1.5 - 5 ND ND ug/L 04/16/18 1.5 - 5 ND ND ug/L 10/17/18 1.5 1.0 -- ND ND ug/L 04/11/19 1.5 10 -- ND ND ug/L 10/09/19 1.5 10 -- ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ug/L 10/15/20 1.5 10 -- ND ND ug/L 04/28/21 1.5 10 -- ND ND ug/L 10/12/21 1.5 10 -- ND ND u /L 04/19/22 1.5 10 ND ND \\11l GOLDER 12 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Ethylbenzene ug/L 09/01/00 -- -- 5 49 ND ug/L 03/01/01 -- -- 5 ND ND ug/L 09/01/01 -- -- 5 ND ND ug/L 03/01/02 -- -- 5 60 ND ug/L 09/01/02 -- -- 5 48 ND ug/L 04/01/03 -- - 5 56 ND ug/L 10/01/03 -- - 5 40 ND ug/L 03/01/04 -- - 5 46 ND ug/L 10/01/04 -- - 5 ND ND ug/L O5/01/05 -- - 5 31 ND ug/L 10/01/05 -- - 5 ND ND ug/L 04/01/06 -- - 5 18.2 ND ug/L 10/01/06 -- - 5 ND ND ug/L 04/10/07 -- - 1 ND ND ug/L 09/25/07 - - 1 ND ND ug/L 05/05/08 2.0 - 1 48 ND ug/L 12/04/08 20 - 1 120 ND ug/L 04/13/09 10 - 1 120 ND ug/L 10/09/09 20 - 1 ND ND ug/L 04/29/10 10 - 1 ND ND ug/L 10/05/10 2.0 - 1 57 ND ug/L O5/10/11 12 - 1 72 ND ug/L 10/04/11 6.2 - 1 65 ND ug/L 04/17/12 13 - 1 36 J ND ug/L 10/24/12 2.6 - 1 39 ND ug/L 04/25/13 1.6 - 1 29 ND ug/L 09/12/13 1.3 - 1 23 ND ug/L 04/23/14 1.3 - 1 ND ND ug/L 10/01/14 1.3 - 1 ND ND ug/L 04/06/15 1.3 - 1 ND ND ug/L 10/07/15 1.3 - 1 ND ND ug/L 04/19/16 1.3 - 1 ND ND ug/L 09/28/16 1.3 - 1 8.2 J ND ug/L 04/27/17 1.3 - 1 30 ND ug/L 10/18/17 1.3 - 1 19 ND ug/L 04/16/18 1.3 - 1 8.8 J ND ug/L 10/17/18 1.3 1.0 -- ND ND ug/L 04/11/19 1.3 10 -- ND ND ug/L 10/09/19 1.3 10 -- 13 ND ug/L 04/20/20 0.13 1.0 -- 2.2 ND ug/L 10/15/20 1.3 10 -- ND ND ug/L 04/28/21 1.3 10 -- ND ND ug/L 10/12/21 1.3 10 -- ND ND u /L 04/19/22 1.3 10 ND ND 2-Hexanone ug/L 09/01/00 -- - 50 ND ND ug/L 03/01/01 -- - 50 ND ND ug/L 09/01/01 -- - 50 ND ND ug/L 03/01/02 -- - 50 ND ND ug/L 09/01/02 -- - 50 ND ND ug/L 04/01/03 -- - 50 ND ND ug/L 10/01/03 - - 50 ND ND ug/L 03/01/04 - -- 50 ND ND ug/L 10/01/04 - -- 50 ND ND ug/L 05/01/05 - -- 50 ND ND ug/L 10/01/05 - -- 50 ND ND ug/L 04/01/06 - -- 50 ND ND ug/L 10/01/06 - -- 50 ND ND ug/L 04/10/07 - -- 50 ND ND ug/L 09/25/07 - -- 50 ND ND ug/L 05/05/08 6.0 -- 50 ND ND ug/L 12/04/08 69 -- 50 ND ND ug/L 04/13/09 34 -- 50 ND ND ug/L 10/09/09 69 -- 50 ND ND ug/L 04/29/10 69 -- 50 ND ND ug/L 10/05/10 6.9 -- 50 ND ND ug/L 05/10/11 18 -- 50 ND ND ug/L 10/04/11 8.8 -- 50 ND ND ug/L 04/17/12 88 -- 50 ND ND ug/L 10/24/12 18 -- 50 ND ND ug/L 04/25/13 2.0 -- 50 3.1 J ND ug/L 09/12/13 8.8 -- 50 ND ND ug/L 04/23/14 8.8 -- 50 ND ND ug/L 10/01/14 8.8 -- 50 ND ND ug/L 04/06/15 8.8 -- 50 ND ND ug/L 10/07/15 8.8 - 50 8.8 ND ug/L 04/19/16 8.8 - 50 ND ND ug/L 09/28/16 8.8 - 50 ND ND ug/L 04/27/17 8.8 - 50 ND ND ug/L 10/18/17 8.8 - 50 ND ND ug/L 04/16/18 8.8 -- 50 ND ND ug/L 10/17/18 8.8 5.0 -- ND ND ug/L 04/11/19 8.8 50 -- ND ND ug/L 10/09/19 8.8 50 -- ND ND ug/L 04/20/20 0.88 5.0 -- 1.3 J ND ug/L 10/15/20 8.8 50 -- ND ND ug/L 04/28/21 8.8 50 -- ND ND ug/L 10/12/21 8.8 50 -- ND ND u /L 04/19/22 8.8 50 ND ND \\11l GOLDER 13 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Chloromethane ug/L 09/01/00 -- -- 10 ND ND ug/L 03/01/01 -- -- 10 ND ND ug/L 09/01/01 -- -- 10 ND ND ug/L 03/01/02 -- -- 10 ND ND ug/L 09/01/02 -- -- 10 ND ND ug/L 04/01/03 -- - 10 ND ND ug/L 10/01/03 -- - 10 ND ND ug/L 03/01/04 -- - 10 ND ND ug/L 10/01/04 -- - 10 ND ND ug/L O5/01/05 -- - 10 ND ND ug/L 10/01/05 -- - 10 ND ND ug/L 04/01/06 -- - 10 ND ND ug/L 10/01/06 -- - 10 ND ND ug/L 04/10/07 -- - 1 ND ND ug/L 09/25/07 -- - 1 ND ND ug/L 05/05/08 2.3 - 1 ND ND ug/L 12/04/08 34 - 1 ND ND ug/L 04/13/09 17 - 1 ND ND ug/L 10/09/09 34 - 1 ND ND ug/L 04/29/10 5.0 - 1 ND ND ug/L 10/05/10 3.4 - 1 ND ND ug/L O5/10/11 11 - 1 ND ND ug/L 10/04/11 5.5 - 1 5.5 ND ug/L 04/17/12 13 - 1 ND ND ug/L 10/24/12 2.6 - 1 ND ND ug/L 04/25/13 1.8 - 1 ND ND ug/L 09/12/13 1.3 - 1 ND ND ug/L 04/23/14 1.3 - 1 ND ND ug/L 10/01/14 1.3 - 1 ND ND ug/L 04/06/15 1.3 - 1 ND ND ug/L 10/07/15 1.3 - 1 ND ND ug/L 04/19/16 1.3 - 1 ND ND ug/L 09/28/16 1.3 - 1 ND ND ug/L 04/27/17 1.3 - 1 ND ND ug/L 10/18/17 1.3 - 1 ND ND ug/L 04/16/18 1.3 - 1 ND ND ug/L 10/17/18 1.3 1.0 -- ND ND ug/L 04/11/19 1.3 10 -- ND ND ug/L 10/09/19 1.3 10 -- ND ND ug/L 04/20/20 0.13 1.0 -- ND ND ug/L 10/15/20 1.3 10 -- ND ND ug/L 04/28/21 1.3 10 -- ND ND ug/L 10/12/21 1.3 10 -- ND ND u /L 04/19/22 1.3 10 ND ND Methylene Chloride ug/L 09/O1/00 -- - 10 97 ND ug/L 03/01/01 -- -- 10 120 ND ug/L 09/01/01 -- -- 10 ND ND ug/L 03/01/02 -- -- 10 37 ND ug/L 09/01/02 -- -- 10 ND ND ug/L 04/01/03 - - 10 ND ND ug/L 10/01/03 - -- 10 13 ND ug/L 03/01/04 - -- 10 ND ND ug/L 10/01/04 - -- 10 ND ND ug/L 05/01/05 - -- 10 ND ND ug/L 10/01/05 - -- 10 ND ND ug/L 04/01/06 - -- 10 ND ND ug/L 10/01/06 - -- 10 ND ND ug/L 04/10/07 - -- 1 ND ND ug/L 09/25/07 - -- 1 ND ND ug/L 05/05/08 2.4 -- 1 ND ND ug/L 12/04/08 53 -- 1 ND ND ug/L 04/13/09 26 -- 1 ND ND ug/L 10/09/09 53 -- 1 ND ND ug/L 04/29/10 7.0 -- 1 ND ND ug/L 10/05/10 5.3 -- 1 ND ND ug/L 05/10/11 2.8 -- 1 ND ND ug/L 10/04/11 1.4 -- 1 ND ND ug/L 04/17/12 23 -- 1 ND ND ug/L 10/24/12 4.6 -- 1 ND ND ug/L 04/25/13 2.0 -- 1 ND ND ug/L 09/12/13 2.3 -- 1 ND ND ug/L 04/23/14 2.3 -- 1 ND ND ug/L 10/01/14 2.3 -- 1 ND ND ug/L 04/06/15 2.3 -- 1 ND ND ug/L 10/07/15 2.3 -- 1 ND ND ug/L 04/19/16 2.3 - 1 ND ND ug/L 09/28/16 2.3 - 1 ND ND ug/L 04/27/17 2.3 - 1 ND ND ug/L 10/18/17 2.3 - 1 ND ND ug/L 04/16/18 2.3 -- 1 ND ND ug/L 10/17/18 2.3 1.0 -- ND ND ug/L 04/11/19 2.3 10 -- ND ND ug/L 10/09/19 2.3 10 -- ND ND ug/L 04/20/20 0.23 1.0 -- ND ND ug/L 10/15/20 2.3 10 -- ND ND ug/L 04/28/21 2.3 10 -- ND ND ug/L 10/12/21 2.3 10 -- ND ND u /L 04/19/22 2.3 10 ND ND \\11l GOLDER 14 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks 2-Butanone ug/L 09/01/00 -- -- 100 ND ND ug/L 03/01/01 -- -- 100 ND ND ug/L 09/01/01 -- -- 100 2600 ND ug/L 03/01/02 -- -- 100 ND ND ug/L 09/01/02 -- -- 100 ND ND ug/L 04/01/03 -- — 100 1100 ND ug/L 10/01/03 -- — 100 1200 ND ug/L 03/01/04 -- — 100 ND ND ug/L 10/01/04 -- — 100 ND ND ug/L O5/01/05 -- — 100 ND ND ug/L 10/01/05 -- — 100 ND ND ug/L 04/01/06 -- — 100 1650 ND ug/L 10/01/06 -- — 100 3000 ND ug/L 04/10/07 -- — 100 7500 ND ug/L 09/25/07 -- — 100 25000 ND ug/L 05/05/08 4.4 — 100 2000 ND ug/L 12/04/08 100 — 100 12000 ND ug/L 04/13/09 50 — 100 5100 ND ug/L 10/09/09 100 — 100 19000 ND ug/L 04/29/10 100 — 100 5700 ND ug/L 10/05/10 10 — 100 1200 ND ug/L O5/10/11 26 — 100 4200 ND ug/L 10/04/11 13 — 100 2500 ND ug/L 04/17/12 130 — 100 4700 ND ug/L 10/24/12 26 — 100 1600 ND ug/L 04/25/13 6.0 — 100 640 ND ug/L 09/12/13 13 — 100 410 ND ug/L 04/23/14 13 — 100 350 ND ug/L 10/01/14 13 — 100 2900 ND ug/L 04/06/15 13 — 100 320 ND ug/L 10/07/15 13 — 100 330 ND ug/L 04/19/16 13 — 100 350 ND ug/L 09/28/16 13 — 100 410 ND ug/L 04/27/17 13 — 100 1100 ND ug/L 10/18/17 13 — 100 240 ND ug/L 04/16/18 13 — 100 110 ND ug/L 10/17/18 13 5.0 -- 64 ND ug/L 04/11/19 13 50 -- 410 ND ug/L 10/09/19 13 50 -- 340 ND ug/L 04/20/20 1.3 5.0 -- 270 ND ug/L 10/15/20 13 50 -- ND ND ug/L 04/28/21 13 50 -- ND ND ug/L 10/12/21 13 50 -- ND ND u /L 04/19/22 13 50 ND ND 4-Methyl-2-pentanone ug/L 09/01/00 -- 100 ND ND ug/L 03/01/01 -- -- 100 ND ND ug/L 09/01/01 -- -- 100 ND ND ug/L 03/01/02 -- -- 100 ND ND ug/L 09/01/02 -- -- 100 ND ND ug/L 04/01/03 — — 100 ND ND ug/L 10/01/03 — -- 100 ND ND ug/L 03/01/04 — -- 100 ND ND ug/L 10/01/04 — -- 100 ND ND ug/L O5/01/05 — -- 100 ND ND ug/L 10/01/05 — -- 100 ND ND ug/L 04/01/06 — -- 100 ND ND ug/L 10/01/06 — -- 100 ND ND ug/L 04/10/07 — -- 100 ND ND ug/L 09/25/07 — -- 100 ND ND ug/L 05/05/08 5.6 -- 100 140 ND ug/L 12/04/08 110 -- 100 580 ND ug/L 04/13/09 55 -- 100 220 J ND ug/L 10/09/09 110 -- 100 300 J ND ug/L 04/29/10 110 -- 100 620 ND ug/L 10/05/10 11 -- 100 150 ND ug/L 05/10/11 22 -- 100 200 ND ug/L 10/04/11 11 -- 100 240 ND ug/L 04/17/12 110 -- 100 140 J ND ug/L 10/24/12 22 -- 100 100 ND ug/L 04/25/13 4.8 — 100 36 J ND ug/L 09/12/13 11 -- 100 46 J ND ug/L 04/23/14 11 -- 100 ND ND ug/L 10/01/14 11 -- 100 130 ND ug/L 04/06/15 11 -- 100 ND ND ug/L 10/07/15 11 -- 100 ND ND ug/L 04/19/16 11 -- 100 13 J ND ug/L 09/28/16 11 -- 100 14 J ND ug/L 04/27/17 11 -- 100 49 J ND ug/L 10/18/17 11 -- 100 32 J ND ug/L 04/16/18 11 -- 100 12 J ND ug/L 10/17/18 11 5.0 — ND ND ug/L 04/11/19 11 50 — 29 J ND ug/L 10/09/19 11 50 — 16 J ND ug/L 04/20/20 1.1 5.0 — 13 ND ug/L 10/15/20 11 50 -- ND ND ug/L 04/28/21 11 50 -- ND ND ug/L 10/12/21 11 50 -- ND ND u /L 04/19/22 11 50 ND ND \\11l GOLDER 15 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Styrene ug/L 09/01/00 -- -- 10 ND ND ug/L 03/01/01 -- -- 10 ND ND ug/L 09/01/01 -- -- 10 ND ND ug/L 03/01/02 -- -- 10 ND ND ug/L 09/01/02 -- -- 10 ND ND ug/L 04/01/03 -- - 10 ND ND ug/L 10/01/03 -- - 10 ND ND ug/L 03/01/04 -- - 10 ND ND ug/L 10/01/04 -- - 10 ND ND ug/L O5/01/05 -- - 10 ND ND ug/L 10/01/05 -- - 10 ND ND ug/L 04/01/06 -- - 10 ND ND ug/L 10/01/06 -- - 10 ND ND ug/L 04/10/07 -- - 1 ND ND ug/L 09/25/07 -- - 1 ND ND ug/L 05/05/08 2.0 - 1 ND ND ug/L 12/04/08 26 - 1 ND ND ug/L 04/13/09 13 - 1 ND ND ug/L 10/09/09 26 - 1 ND ND ug/L 04/29/10 8.2 - 1 ND ND ug/L 10/05/10 2.6 - 1 7.7 J ND ug/L O5/10/11 1.1 - 1 ND ND ug/L 10/04/11 0.53 - 1 6.8 J ND ug/L 04/17/12 11 - 1 ND ND ug/L 10/24/12 2.2 - 1 ND ND ug/L 04/25/13 0.72 - 1 2.0 J ND ug/L 09/12/13 1.1 - 1 ND ND ug/L 04/23/14 1.1 - 1 ND ND ug/L 10/01/14 1.1 - 1 ND ND ug/L 04/06/15 1.1 - 1 ND ND ug/L 10/07/15 1.1 - 1 ND ND ug/L 04/19/16 1.1 - 1 ND ND ug/L 09/28/16 1.1 - 1 ND ND ug/L 04/27/17 1.1 -- 1 8.9 J ND ug/L 10/18/17 1.1 -- 1 14 ND ug/L 04/16/18 1.1 - 1 ND ND ug/L 10/17/18 1.1 1.0 -- ND ND ug/L 04/11/19 1.1 10 -- ND ND ug/L 10/09/19 1.1 10 -- ND ND ug/L 04/20/20 0.11 1.0 -- ND ND ug/L 10/15/20 1.1 10 -- ND ND ug/L 04/28/21 1.1 10 -- ND ND ug/L 10/12/21 1.1 10 -- ND ND u /L 04/19/22 1.1 10 ND ND Tetrachloroethene ug/L 09/01/00 -- - 5 ND ND ug/L 03/01/01 -- - 5 ND ND ug/L 09/01/01 -- - 5 ND ND ug/L 03/01/02 -- - 5 ND ND ug/L 09/01/02 -- - 5 ND ND ug/L 04/01/03 -- - 5 ND ND ug/L 10/01/03 -- - 5 ND ND ug/L 03/01/04 -- - 5 ND ND ug/L 10/01/04 -- - 5 ND ND ug/L 05/01/05 -- - 5 ND ND ug/L 10/01/05 -- - 5 ND ND ug/L 04/01/06 -- - 5 ND ND ug/L 10/01/06 -- - 5 ND ND ug/L 04/10/07 -- - 1 ND ND ug/L 09/25/07 -- - 1 ND ND ug/L 05/05/08 3.6 - 1 ND ND ug/L 12/04/08 36 - 1 ND ND ug/L 04/13/09 18 - 1 ND ND ug/L 10/09/09 36 - 1 ND ND ug/L 04/29/10 9.9 - 1 ND ND ug/L 10/05/10 3.6 - 1 ND ND ug/L O5/10/11 15 - 1 ND ND ug/L 10/04/11 7.3 - 1 ND ND ug/L 04/17/12 17 - 1 ND ND ug/L 10/24/12 3.4 - 1 ND ND ug/L 04/25/13 1.1 - 1 2.3 J ND ug/L 09/12/13 1.7 - 1 ND ND ug/L 04/23/14 1.7 - 1 ND ND ug/L 10/01/14 1.7 - 1 ND ND ug/L 04/06/15 1.7 - 1 ND ND ug/L 10/07/15 1.7 - 1 ND ND ug/L 04/19/16 1.7 - 1 ND ND ug/L 09/28/16 1.7 - 1 ND ND ug/L 04/27/17 1.7 -- 1 ND ND ug/L 10/18/17 1.7 -- 1 ND ND ug/L 04/16/18 1.7 -- 1 ND ND ug/L 10/17/18 1.7 1.0 -- ND ND ug/L 04/11/19 1.7 10 -- ND ND ug/L 10/09/19 1.7 10 -- ND ND ug/L 04/20/20 0.17 1.0 -- ND ND ug/L 10/15/20 1.7 10 -- ND ND ug/L 04/28/21 1.7 10 -- ND ND ug/L 10/12/21 1.7 10 -- ND ND u /L 04/19/22 1.7 10 ND ND \\11l GOLDER 16 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Toluene ug/L 09/01/00 -- -- 5 350 ND ug/L 03/01/01 -- -- 5 220 ND ug/L 09/01/01 -- -- 5 390 ND ug/L 03/01/02 -- -- 5 190 ND ug/L 09/01/02 -- -- 5 220 ND ug/L 04/01/03 -- - 5 220 ND ug/L 10/01/03 -- - 5 240 ND ug/L 03/01/04 -- - 5 400 ND ug/L 10/01/04 -- - 5 ND ND ug/L 05/01/05 -- - 5 73 ND ug/L 10/01/05 -- - 5 55 ND ug/L 04/01/06 -- - 5 12.8 ND ug/L 10/01/06 -- - 5 ND ND ug/L 04/10/07 -- - 1 150 ND ug/L 09/25/07 -- - 1 ND ND ug/L 05/05/08 2.0 - 1 41 ND ug/L 12/04/08 27 - 1 310 ND ug/L 04/13/09 14 - 1 86 ND ug/L 10/09/09 27 - 1 42 J ND ug/L 04/29/10 5.3 - 1 40 J ND ug/L 10/05/10 2.7 - 1 150 ND ug/L O5/10/11 17 - 1 160 ND ug/L 10/04/11 8.5 - 1 180 ND ug/L 04/17/12 14 - 1 97 J ND ug/L 10/24/12 2.8 - 1 97 ND ug/L 04/25/13 0.92 - 1 73 ND ug/L 09/12/13 1.4 - 1 49 ND ug/L 04/23/14 1.4 - 1 ND ND ug/L 10/01/14 1.4 - 1 89 ND ug/L 04/06/15 1.4 - 1 ND ND ug/L 10/07/15 1.4 - 1 ND ND ug/L 04/19/16 1.4 - 1 ND ND ug/L 09/28/16 1.4 - 1 15 ND ug/L 04/27/17 1.4 - 1 58 ND ug/L 10/18/17 1.4 - 1 32 ND ug/L 04/16/18 1.4 - 1 23 ND ug/L 10/17/18 1.4 1.0 -- ND ND ug/L 04/11/19 1.4 10 -- 4.8 J ND ug/L 10/09/19 1.4 10 -- 9.8 J ND ug/L 04/20/20 0.14 1.0 -- 3.0 ND ug/L 10/15/20 1.4 10 -- ND ND ug/L 04/28/21 1.4 10 -- ND ND ug/L 10/12/21 1.4 10 -- ND ND u /L 04/19/22 1.4 10 ND ND Trichloroethene ug/L 09/01/00 -- - 5 ND ND ug/L 03/01/01 -- - 5 ND ND ug/L 09/01/01 -- - 5 ND ND ug/L 03/01/02 -- - 5 7.5 ND ug/L 09/01/02 -- - 5 ND ND ug/L 04/01/03 -- - 5 ND ND ug/L 10/01/03 -- - 5 ND ND ug/L 03/01/04 -- - 5 ND ND ug/L 10/01/04 -- - 5 ND ND ug/L 05/01/05 -- - 5 ND ND ug/L 10/01/05 -- - 5 ND ND ug/L 04/01/06 -- - 5 ND ND ug/L 10/01/06 -- - 5 ND ND ug/L 04/10/07 -- - 1 ND ND ug/L 09/25/07 -- - 1 ND ND ug/L O5/05/08 2.5 - 1 ND ND ug/L 12/04/08 38 - 1 ND ND ug/L 04/13/09 19 - 1 ND ND ug/L 10/09/09 38 - 1 ND ND ug/L 04/29/10 13 - 1 ND ND ug/L 10/05/10 3.8 - 1 ND ND ug/L O5/10/11 14 - 1 ND ND ug/L 10/04/11 7.2 - 1 ND ND ug/L 04/17/12 15 - 1 ND ND ug/L 10/24/12 3.0 - 1 ND ND ug/L 04/25/13 0.92 - 1 1.8 J ND ug/L 09/12/13 1.5 - 1 ND ND ug/L 04/23/14 1.5 - 1 ND ND ug/L 10/01/14 1.5 - 1 ND ND ug/L 04/06/15 1.5 - 1 ND ND ug/L 10/07/15 1.5 - 1 ND ND ug/L 04/19/16 1.5 - 1 ND ND ug/L 09/28/16 1.5 - 1 ND ND ug/L 04/27/17 1.5 - 1 ND ND ug/L 10/18/17 1.5 - 1 ND ND ug/L 04/16/18 1.5 -- 1 ND ND ug/L 10/17/18 1.5 1.0 -- ND ND ug/L 04/11/19 1.5 10 -- ND ND ug/L 10/09/19 1.5 10 -- ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ug/L 10/15/20 1.5 10 -- ND ND ug/L 04/28/21 1.5 10 -- ND ND ug/L 10/12/21 1.5 10 -- ND ND u /L 04/19/22 1.5 10 ND ND \\11l GOLDER 17 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Vinyl Chloride ug/L 09/01/00 -- -- 10 ND ND ug/L 03/01/01 -- -- 10 ND ND ug/L 09/01/01 -- -- 10 ND ND ug/L 03/01/02 -- -- 10 ND ND ug/L 09/01/02 -- -- 10 ND ND ug/L 04/01/03 - -- 10 ND ND ug/L 10/01/03 - -- 10 ND ND ug/L 03/01/04 - -- 10 ND ND ug/L 10/01/04 - -- 10 ND ND ug/L 05/01/05 - -- 10 ND ND ug/L 10/01/05 - -- 10 ND ND ug/L 04/01/06 - -- 10 ND ND ug/L 10/01/06 - -- 10 ND ND ug/L 04/10/07 - -- 1 ND ND ug/L 09/25/07 - -- 1 ND ND ug/L 05/05/08 3.0 -- 1 ND ND ug/L 12/04/08 30 -- 1 ND ND ug/L 04/13/09 15 -- 1 ND ND ug/L 10/09/09 30 -- 1 ND ND ug/L 04/29/10 8.3 -- 1 ND ND ug/L 10/05/10 3.0 -- 1 ND ND ug/L 05/10/11 12 -- 1 ND ND ug/L 10/04/11 6.0 -- 1 ND ND ug/L 04/17/12 32 -- 1 ND ND ug/L 10/24/12 6.4 -- 1 ND ND ug/L 04/25/13 1.1 -- 1 2.3 J ND ug/L 09/12/13 3.2 -- 1 ND ND ug/L 04/23/14 3.2 -- 1 ND ND ug/L 10/01/14 3.2 -- 1 ND ND ug/L 04/06/15 3.2 -- 1 ND ND ug/L 10/07/15 3.2 -- 1 ND ND ug/L 04/19/16 3.2 -- 1 ND ND ug/L 09/28/16 3.2 -- 1 ND ND ug/L 04/27/17 3.2 -- 1 ND ND ug/L 10/18/17 3.2 -- 1 ND ND ug/L 04/16/18 3.2 -- 1 ND ND ug/L 10/17/18 3.2 1.0 -- ND ND ug/L 04/11/19 3.2 10 -- ND ND ug/L 10/09/19 3.2 10 -- ND ND ug/L 04/20/20 0.32 1.0 -- ND ND ug/L 10/15/20 3.2 10 -- ND ND ug/L 04/28/21 3.2 10 -- ND ND ug/L 10/12/21 3.2 10 -- ND ND u /L 04/19/22 3.2 1 10 ND ND Xylenes (Total) ug/L 09/01/00 -- -- 5 154 ND ug/L 03/01/01 -- -- 5 65 ND ug/L 09/01/01 -- -- 5 110 ND ug/L 03/01/02 -- -- 5 186 ND ug/L 09/01/02 -- -- 5 127 ND ug/L 04/01/03 - - 5 157 ND ug/L 10/01/03 - -- 5 116 ND ug/L 03/01/04 - -- 5 142 ND ug/L 10/01/04 - -- 5 38 ND ug/L 05/01/05 - -- 5 69 ND ug/L 10/01/05 - -- 5 56 ND ug/L 04/01/06 - -- 5 48.8 ND ug/L 10/01/06 - -- 5 ND ND ug/L 04/10/07 - -- 5 240 ND ug/L 09/25/07 - -- 5 ND ND ug/L 05/05/08 6.7 -- 5 120 ND ug/L 12/04/08 40 -- 5 440 ND ug/L 04/13/09 20 -- 5 280 ND ug/L 10/09/09 40 -- 5 ND J ND ug/L 04/29/10 22 -- 5 50 J ND ug/L 10/05/10 4.0 -- 5 240 ND ug/L 05/10/11 42 -- 5 250 ND ug/L 10/04/11 21 -- 5 250 ND ug/L 04/17/12 45 -- 5 160 J ND ug/L 10/24/12 9.0 -- 5 170 ND ug/L 04/25/13 2.7 -- 5 140 ND ug/L 09/12/13 4.5 -- 5 94 ND ug/L 04/23/14 4.5 -- 5 52 ND ug/L 10/01/14 4.5 -- 5 160 ND ug/L 04/06/15 4.5 - 5 31 ND ug/L 10/07/15 4.5 -- 5 ND ND ug/L 04/19/16 4.5 -- 5 27 J ND ug/L 09/28/16 4.5 -- 5 42 ND ug/L 04/27/17 4.5 -- 5 92 ND ug/L 10/18/17 4.5 -- 5 62 ND ug/L 04/16/18 4.5 -- 5 31 ND ug/L 10/17/18 4.5 3.0 -- 12 J ND ug/L 04/11/19 4.5 30 -- 14 J ND ug/L 10/09/19 4.5 30 -- 18 J ND ug/L 04/20/20 0.45 3.0 -- 11 ND ug/L 10/15/20 4.5 30 -- ND ND ug/L 04/28/21 4.5 30 -- ND ND ug/L 10/12/21 4.5 30 -- ND ND u /L 1 04/19/22 1 4.5 1 30 1 ND ND \\11l GOLDER 18 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent Reporting Sample Method Detection Practical SWS Reporting (SW Standard) Units Date Limit Quantitation Limit Limit L-1 Blanks 1,4-Dioxane ug/L 04/20/20 0.80 2.0 -- 81 ND ug/L 10/15/20 0.80 2.0 -- 40 ND ug/L 04/28/21 0.80 2.0 -- 50 ND ug/L 10/12/21 0.80 2.0 -- 45 ND u /L 04/19/22 0.80 2.0 36 ND Nitrate as N mg/L 09/01/00 -- - 0.02 <0.05 ND mg/L 03/01/01 -- - 0.02 <0.02 ND mg/L 09/01/01 -- - 0.02 <0.02 ND mg/L 03/01/02 -- - 0.02 400 ND mg/L 09/01/02 -- - 0.02 <0.10 ND mg/L 04/01/03 -- - 0.02 <0.50 ND mg/L 10/01/03 -- - 0.02 <0.10 ND mg/L 03/01/04 -- - 0.02 <0.20 ND mg/L 10/01/04 -- - 0.02 <0.10 ND mg/L 05/01/05 -- - 0.02 <0.5 ND mg/L 10/01/05 -- - 0.02 <0.1 ND mg/L 04/01/06 -- - 0.02 2 ND mg/L 10/01/06 -- - 0.02 0.5 ND mg/L 04/10/07 -- - 10 0.46 ND mg/L 09/25/07 -- - 10 2.0 J ND mg/L 12/04/08 0.01 - 10 ND ND mg/L 04/13/09 0.01 - 10 0.054 J ND mg/L 10/09/09 0.0056 - 10 ND ND mg/L 04/29/10 0.021 - 10 ND ND mg/L 10/05/10 0.025 - 10 ND ND mg/L 05/10/11 0.025 - 10 0.074 J ND mg/L 10/04/11 0.025 - 10 0.052 J ND mg/L 04/17/12 0.025 - 10 0.038 J ND mg/L 10/24/12 0.025 - 10 0.051 J ND mg/L 04/25/13 0.025 - 10 0.3 J ND mg/L 09/12/13 0.025 - 10 0.10 J ND mg/L 04/23/14 0.025 - 10 0.05 J ND mg/L 10/01/14 0.025 - 10 0.11 J ND mg/L 04/06/15 0.025 - 10 ND ND mg/L 10/07/15 0.025 - 10 ND ND mg/L 04/19/16 0.025 - 10 ND ND mg/L 09/28/16 0.025 - 10 0.1 J ND mg/L 04/27/17 0.025 -- 10 0.09 J ND mg/L 10/18/17 0.025 -- 10 0.37 J ND mg/L 04/16/18 0.025 - 10 0.22 J ND mg/L 10/17/18 0.025 0.1 -- 1.6 ND mg/L 04/11/19 0.025 0.1 -- 0.57 J ND mg/L 10/09/19 0.025 0.1 -- ND ND mg/L 04/20/20 0.041 0.1 -- 0.089 J ND mg/L 10/15/20 0.041 0.1 -- 0.081 J ND mg/L 04/28/21 0.041 0.1 -- 0.052 J ND mg/L 10/12/21 0.041 0.1 -- ND ND m /L 04/19/22 0.041 1 0.1 ND ND Sulfate as SO4 mg/L 09/01/00 -- -- 5 <5 ND mg/L 03/01/01 -- -- 5 <5 ND mg/L 09/01/01 -- -- 5 2 J ND mg/L 03/01/02 -- - 5 ND ND mg/L 09/01/02 -- - 5 ND ND mg/L 04/01/03 -- - 5 11 ND mg/L 10/01/03 -- - 5 2.9 ND mg/L 03/01/04 -- - 5 4.2 ND mg/L 10/01/04 - - 5 2.3 ND mg/L 05/01/05 - -- 5 11.3 ND mg/L 10/01/05 - -- 5 2.2 ND mg/L 04/01/06 -- -- 5 5.0 ND mg/L 10/01/06 -- -- 5 5.0 ND mg/L 04/10/07 -- -- 5 3.1 J ND mg/L 09/25/07 -- -- 5 8.6 J ND mg/L 05/05/08 0.25 -- 250 3.1 J ND mg/L 05/05/08 0.25 -- 250 3.1 J ND mg/L 12/04/08 0.05 -- 250 3.3 J ND mg/L 04/13/09 0.078 -- 250 2.5 J ND mg/L 10/09/09 0.078 -- 250 5.0 J ND mg/L 04/29/10 0.12 - 250 2.5 J ND mg/L 10/05/10 0.12 - 250 2.8 J ND mg/L 05/10/11 0.02 - 250 4.7 J ND mg/L 10/04/11 0.02 - 250 15 J ND mg/L 04/17/12 0.04 - 250 5.3 B -- mg/L 10/24/12 0.04 - 250 3.5 J ND mg/L 04/25/13 0.04 - 250 3.5 J ND mg/L 09/12/13 0.04 - 250 3.0 J ND mg/L 04/23/14 2.9 - 250 3.2 J ND mg/L 10/01/14 2.9 - 250 4.1 J ND mg/L 04/06/15 2.9 - 250 ND ND mg/L 10/07/15 5.8 - 250 80 J ND mg/L 04/19/16 2.9 - 250 ND ND mg/L 09/28/16 2.9 -- 250 ND ND mg/L 04/27/17 0.07 -- 250 64 J ND mg/L 10/18/17 2.9 -- 250 7.9 J ND mg/L 04/16/18 2.9 -- 250 20 J ND mg/L 10/17/18 2.9 5.0 -- 12 ND mg/L 04/11/19 2.9 5.0 -- 17 ND mg/L 10/09/19 14 25 -- ND ND mg/L 04/20/20 290 500 - ND ND mg/L 10/15/20 2.9 5 - 10 ND mg/L 04/28/21 2.9 5 - 4.6 J ND mg/L 10/12/21 2.9 5 - 7.2 ND m /L 04/19/22 2.9 5 6.6 ND \\11l GOLDER 19 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Biochemical Oxygen Demand mg/L 09/01/00 -- -- -- 22.6 NO mg/L 03/01/01 -- -- -- 300 ND mg/L 09/01/01 -- -- -- 83 ND mg/L 03/01/02 -- -- -- 44 ND mg/L 09/01/02 -- -- -- 19 ND mg/L 04/01/03 -- - -- 591 ND mg/L 10/01/03 -- - -- 330 ND mg/L 03/01/04 -- - -- 56 ND mg/L 10/01/04 -- - -- 34 ND mg/L 05/01/05 -- - -- 119 J ND mg/L 10/01/05 -- - -- 27.7 ND mg/L 04/01/06 -- - -- 200 ND mg/L 10/01/06 -- - -- 1940 ND mg/L 04/10/07 -- - -- 3400 ND mg/L 09/25/07 -- - -- 4500 ND mg/L 05/05/08 2 — -- 960 ND mg/L 12/04/08 2 — -- 1900 ND mg/L 04/13/09 2 — -- 1100 ND mg/L 10/09/09 2 — -- 1300 ND mg/L 04/29/10 2 — -- 780 ND mg/L 10/05/10 2 — -- 510 ND mg/L 05/10/11 2 — -- 360 ND mg/L 10/04/11 2 — -- 1000 ND mg/L 04/17/12 2 — -- 310 ND mg/L 10/24/12 2 — -- 300 ND mg/L 04/25/13 2 — -- 130 ND mg/L 09/12/13 2 — -- 130 ND mg/L 04/23/14 2 — -- 130 ND mg/L 10/01/14 2 — -- 230 ND mg/L 04/06/15 2 — -- 45 ND mg/L 10/07/15 2 — -- 23 ND mg/L 04/19/16 2 — -- 130 ND mg/L 09/28/16 2 — -- 60 ND mg/L 04/27/17 2 — -- 400 ND mg/L 10/18/17 2 — -- 110 ND mg/L 04/16/18 2 -- -- 31 ND mg/L 10/17/18 2 2 -- 45 ND mg/L 04/11/19 2 2 -- 96 ND mg/L 10/09/19 2 2 — 64 ND mg/L 04/20/20 2 2 — 33 ND mg/L 10/15/20 2 2 -- 18 ND mg/L 04/28/21 2 2 -- 14 ND mg/L 10/12/21 2 2 -- 26 NO m /L 04/19/22 2 1 2 41 ND Chemical Oxygen Demand mg/L 09/01/00 -- -- -- 166 NO mg/L 03/01/01 -- -- — 580 ND mg/L 09/01/01 — -- — 330 NO mg/L 03/01/02 — -- — 200 ND mg/L 09/01/02 — -- — 210 NO mg/L 04/01/03 — -- — 690 ND mg/L 10/01/03 — -- — 390 NO mg/L 03/01/04 — -- — 220 ND mg/L 10/01/04 — -- — 240 NO mg/L 05/01/05 — -- — 1810 ND mg/L 10/01/05 — -- — 425 NO mg/L 04/01/06 — -- — 1340 ND mg/L 10/01/06 — -- — 3860 NO mg/L 04/10/07 — -- — 5400 NO mg/L 09/25/07 -- -- — 6600 ND mg/L 05/05/08 200 -- — 1900 ND mg/L 12/04/08 100 -- — 4300 ND mg/L 04/13/09 12 -- — 2500 ND mg/L 10/09/09 12 -- — 2800 ND mg/L 04/29/10 28 -- — 2100 ND mg/L 10/05/10 28 -- — 1700 ND mg/L 05/10/11 100 -- — 1900 ND mg/L 10/04/11 50 -- — 2200 ND mg/L 04/17/12 100 -- — 1200 ND mg/L 10/24/12 40 -- — 1200 ND mg/L 04/25/13 40 -- — 720 ND mg/L 09/12/13 10 — -- 780 ND mg/L 04/23/14 20 — -- 510 ND mg/L 10/01/14 40 — -- 860 ND mg/L 04/06/15 40 — -- 470 ND mg/L 10/07/15 10 — -- 460 ND mg/L 04/19/16 10 — -- 730 ND mg/L 09/28/16 20 -- -- 710 ND mg/L 04/27/17 20 -- -- 910 ND mg/L 10/18/17 10 -- -- 770 ND mg/L 04/16/18 10 -- -- 260 ND mg/L 10/17/18 10 10 -- 540 ND mg/L 04/11/19 10 10 -- 590 ND mg/L 10/09/19 20 20 -- 740 NO mg/L 04/20/20 10 10 -- 310 ND mg/L 10/15/20 10 10 -- 400 ND mg/L 04/28/21 10 10 -- 400 ND mg/L 10/12/21 10 10 -- 520 ND m /L 1 04/19/22 1 10 1 10 400 ND \\11l GOLDER 20 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent Reporting Sample Method Detection Practical SWS Reporting (SW Standard) Units Date Limit Quantitation Limit Limit L-1 Blanks Phosphorus mg/L 09/01/00 -- -- 20 5.43 ND mg/L 03/01/01 -- -- 20 260 ND mg/L 09/01/01 -- 20 1 ND mg/L 03/01/02 -- -- 20 330 ND mg/L 09/01/02 -- -- 20 0.83 ND mg/L 04/01/03 - -- 20 2.5 ND mg/L 10/01/03 - -- 20 0.28 ND mg/L 03/01/04 - -- 20 0.78 ND mg/L 10/01/04 - -- 20 0.93 ND mg/L 05/01/05 - -- 20 4.3 ND mg/L 10/01/05 - -- 20 1.2 ND mg/L 04/01/06 - -- 20 3.0 ND mg/L 10/01/06 - -- 20 3.75 ND mg/L 04/10/07 - -- - 3.6 ND mg/L 09/25/07 - -- - 1.8 ND mg/L 05/05/08 0.05 -- - 2.3 ND mg/L 12/04/08 0.05 -- - 1.7 ND mg/L 04/13/09 0.05 -- - 1.8 ND mg/L 10/09/09 0.025 -- - 0.96 ND mg/L 04/29/10 0.025 -- - 1.5 ND mg/L 10/05/10 0.025 -- - 2.7 ND mg/L 05/10/11 0.100 -- - 4.3 ND mg/L 10/04/11 0.021 -- - 1.8 ND mg/L 04/17/12 0.24 -- - 1.4 ND mg/L 10/24/12 0.024 -- - 1.5 ND mg/L 04/25/13 0.025 -- - 0.88 ND mg/L 09/12/13 0.050 -- - 4.1 ND mg/L 04/23/14 0.025 -- - 2.1 ND mg/L 10/01/14 0.025 -- - 3.00 ND mg/L 04/06/15 0.050 -- - 2.1 ND mg/L 10/07/15 0.025 -- - 0.32 ND mg/L 04/19/16 0.025 -- - 3.1 ND mg/L 09/28/16 0.050 -- - 3.6 B -- mg/L 04/27/17 0.025 -- - 2.0 ND mg/L 10/18/17 0.025 -- -- 2.1 ND mg/L 04/16/18 0.025 -- -- 0.94 ND mg/L 10/17/18 0.025 0.1 -- 2.2 ND mg/L 04/11/19 0.025 0.1 -- 1.4 0.056 J mg/L 10/09/19 0.12 0.5 -- 3.7 ND mg/L 04/20/20 0.05 0.2 -- 1.5 ND mg/L 10/15/20 0.05 0.2 -- 1.2 ND mg/L 04/28/21 0.05 0.2 -- 1.2 ND mg/L 10/12/21 0.025 0.1 -- 0.45 ND m /L 04/19/22 0.025 1 0.1 0.59 ND pH (Field) S.U. 04/27/17 -- -- - 6.90 -- S.U. 10/18/17 -- -- -- 7.24 -- S.U. 04/16/18 -- -- - 6.52 -- S.U. 10/17/18 - -- - 7.48 -- S.U. 04/11/19 - -- - 7.40 -- S.U. 10/09/19 - -- - 6.94 -- S.U. 04/20/20 - -- - 7.20 -- S.U. 10/15/20 - -- - 7.48 -- S.U. 04/28/21 - -- - 7.48 -- S.U. 10/12/21 - -- - 7.06 -- S.U. 04/19/22 7.48 Specific Conductance (Field) us/cm 04/27/17 - -- - 4374 -- us/cm 10/18/17 - -- - 4470 -- uS/cm 04/16/18 - -- - 2283 -- us/cm 10/17/18 - -- - 4844 -- uS/cm 04/11/19 - -- - 3028 -- uS/cm 10/09/19 - -- - 6880 -- us/cm 04/20/20 - -- - 4756 -- us/cm 10/15/20 -- -- -- 4313 -- uS/cm 04/28/21 -- -- -- 4333 -- us/cm 10/12/21 -- -- -- 4981 -- uS/cm 04/19/22 3999 Temperature (Field) oC 04/27/17 -- -- -- 20.83 -- oC 10/18/17 -- -- -- 22.3 -- oC 04/16/18 -- -- -- 16.97 -- oC 10/17/18 -- -- -- 21.7 -- oC 04/11/19 -- - -- 24.2 - oC 10/09/19 -- - -- 23.9 - oC 04/20/20 -- - -- 19.4 - oC 10/15/20 -- - -- 23.1 - oC 04/28/21 -- - -- 19.4 - oC 10/12/21 -- - -- 23.9 - oC 04/19/22 16.7 \\11l GOLDER 21 of 22 A.gust2022 19131339.105 TABLE 8 Summary of Leachate Monitoring Results Detected Constituents White Street Landfill - Phase III, Permit No. 41-12 Greensboro, North Carolina Detected Constituent (SW Standard) Reporting Units Sample Date Method Detection Limit Practical Quantitation Limit SWS Reporting Limit L-1 Blanks Turbidity (Field) NTU 04/27/17 -- -- -- 56.0 -- NTU 10/18/17 -- -- -- 106 -- NTU 04/16/18 -- -- -- 146 -- NTU 10/17/18 -- -- -- 164 -- NTU 04/11/19 -- -- -- 179 -- NTU 10/09/19 -- — — 140 — NTU 04/20/20 -- — — 26.8 — NTU 10/15/20 — — — 13.3 -- NTU 04/28/21 — -- — 9.21 -- NTU 10/12/21 — -- — 32.2 -- NTU 04/19/22 107 Notes: mg/L = milligrams per liter ug/L = micrograms per liter mV = Millivolts S.U. = Standard Units NTU = Nephelometric Turbidity Units uS/cm = microsiemens per centimeter J = Prior to the November 2018 event, J flags are estimated values below the SWS Reporting limit. Beginning with the November 2018 B = blank -qualified data ND = not detected above the laboratory detection limit -- = no data available or no limit established Blanks = field, trip and method blanks Bold = concentrations above applicable GWPS and/or NC 2L have been bolded. Shaded = concentrations above applicable EPA MCL have been shaded. MDL = laboratory method detection limit SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on 01/18/07 Data prior to April 2017 provided by S&ME Engineering The following dilutions were noted for the April 2022 event: Antinomy and Thallium (1 OX), VOCs (1OX) \\11l GOLDER 22 of 22 FIGURES LEGEND o, 0 v 0 rn cm _M M E Z N ii SW-3 LOCATED —1600 FT. WEST —4yVV r I . VVCO I -1100 SW-2 LOCATED -500 FT. WEST //0 I I �- 697.14 L6� i El , �M - Q -681MSW LANDFILL �687.1.8 .85, — -� --0Il LIMITS OF WASTE 680 4687.43 �_ 683.82 S �� -2� S -3 / .686.24 685.93 - 1 4010 -7� 687.82 � 684.51 6II-7 85.65 - li II- A o 700.32 699.30 687.80 / o I SW-4 LOCATED 900 FT. EAST CLIENT CITY OF GREENSBORO CONSULTANT 1-5, ' '16.71 �.120 YYYY—MM—DD 2022-05-20 DESIGNED XX% GOLDER PREPARED REVIEWED GOLDER ASSOCIATES NC, INC JWS SIB DYR APPROVED RPK O O 700— �-1 NM APPROXIMATE PROPERTY LINE. APPROXIMATE LIMITS OF WASTE EX. TOPOGRAPHIC CONTOURS (2 FT. INTERVALS) 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 NOTES 1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET. 2. GROUNDWATER SURFACE CONTOUR INTERVAL = 10 FEET. 3. GROUNDWATER ELEVATIONS MEASURED ON APRIL 19, 2022. 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. TOPOGRAPHY IN VICINITY OF PHASE II AND III LANDFILLS UPDATED BASED ON AERIAL SURVEY DATED JUNE 1, 2020, PROVIDED BY CARTOGRAPHIC AERIAL MAPPING, INC. 9. 7.5 MINUTE USGS QUADRANGLE, MCLEANSVILLE, NORTH CAROLINA, 2016. RD DO Aso w �" ►�7fITE ST � A 0 a '"' D* 1 r► I f 0 1 a I(EELr RU ,. a W � Q :T0�'D O HU NE MILL It 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 19, 2022 PROJECT NO. 19-131339 0 0 FIGURE 1 0 LEGEND ❑ SW-1 SURFACE WATER MONITORING POINT CLIENT CITY OF GREENSBORO UC --u xr 1% G O L D E R I) PREPARED SEP REVIEWED DYR GOLDER ASSOCIATES NC, INC. APPROVED RPK 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 19-131339 0 2 APPENDIX A Groundwater and Surface Water Sampling Logs %%%%I) GOLDER Project Name: White Street Well ID: AA4 - f Well Diameter: 2 inches Depth to Bottom: a feet Pumping Rate: mUmin. DATE: y - ?- G ~ � Z GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): T•MtACi-6e)(- A+ Initial Depth to Water:. t feet Water Column Thickness: feet System Volume: -70 mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 9MM.M. M M r "* ® ORP r Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at I Signature: ) Date:' ` ^ 2 QA1QC Sign Off: Date:/. %%til) GOLDER Project Name: White Street Well ID: I G9 Well Diameter: 2 inches Depth to Bottom: ; � , W Z feet Pumping Rate: f '70 mL/min DATE: L/' ) Y- "Z' 1 GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): Initial Depth to Water: Water Column Thickness T. Martinez 'Z 1. y U feet oil , 5 Z feet System Volume: mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 1117itWYMMEM Dis 02 MI-ORP Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at t' TN(m jUNJU/ HC) Signature: QA/QC Sign Off: Date: t- / / 4/ 2 2 Date: 7- / 5 • ZZ. %\til) GOLDER Project Name: Well ID: Well Diameter: Depth to Bottom Pumping Rate: White Street 1t- 1 2 inches Z E . v feet 195 mL/min. DATE: y — I � - Z � GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): j -mg sr4m e 2 -B-Cax Initial Depth to Water: f Z . - feet Water Column Thickness: ) 3, 2 feet System Volume: i Op mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 ® . Cond. ® ' .• • , Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at 0,Y50 Signature: QA/QC Sign Off: Date: L/ - / q - 2 Z Date: 7, / 4 , Z Z_ %%til) GOLDER Project Name: White Street Well ID: - 2 Well Diameter: pill 2 inches Depth to Bottom: 2_5 ,o6 feet Pumping Rate: //0 mL/min DATE: yam) 0, 22 GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): T. Martinez Initial Depth to Water: Q .3s_ feet Water Column Thickness: , j�,S feet System Volume: mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 Sp. Cond. ORP Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at t:3�Z (JNN7 SS Signature: Date: L-I -/y - 2 ? QA/QC Sign Off: __,1.d�i Date: 7 -!g �2L NNNI) GOLDER Project Name: hite Street Well ID: 1 1 3 Well Diameter: 2 inches Depth to Bottom: 32, (CC) feet Pumping Rate: /tp mL/min DATE: L+-19r22 GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): T. Martinez Initial Depth to Water: J gs feet Water Column Thickness: feet System Volume: mL Equipment: YSI, Turbidity Meter, Water Level 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) Z50 6,60 SITZ. o 15, P9 i <4 51 • `t 5" 0- ISOO , 6 3 Fq.li .0 (`1r S•S �3,Z 157.1L 05 d 6.5y3$6, •o..3 p.G1 is•s i5. 3tv 6.56 :3 Z it•Z b.5`f 6,5- 6T,Z 1�-,55 Z0 sq 6,5 s$6 .S &0,6 163 'Z,S 6,53 1 . 5. is"I -io-Z Z _T .914 15.9,4 33.Z 1z,' 2,36 5,4 %,0 ,ao 33l bq' 553, t i . Z- ti I y. �� 15.70 133c/6 6Z `3 . H ., 6 , S U S- Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at ( 3& wCA- P k S J N "J'l _SU Signature: i Date: LJ- ( q, 2 2 QA/QC Sign Off: Date: 7 -[g -L 2. %%til) GOLDER Project Name: White Street Well ID: % I - 36 Well Diameter: 2 inches Depth to Bottom: ZS, (30 feet Pumping Rate: AS-0 mL/min. DATE: 14/ t 1) 2 Z GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): T. Martinez Initial Depth to Water: ) 2, 6N feet Water Column Thickness: 36 feet System Volume: &SS- mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder MP-15 Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at 14'? — (.i'r'Thcru S 1 �U Date: 9/ / 7 / Z'L Date: 7—if —2-Z l� %%%%I) GOLDER DATE: GROUNDWATER SAMPLING LOG Project Name: White Street Project Number: GL19131339 Well ID: u Li /I Sampler(s): T. Martinez Well Diameter: 2 inches Initial Depth to Water: -Z,7 feet Depth to Bottom: 757e0 feet Water Column Thickness: ?7, OS feet Pumping Rate: 'Z on mL/min. System Volume: 6 bs mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 ® ®,• IS • Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at Signature: Date: QA/QC Sign Off: Date: 15 • 2 L %%til) GOLDER Project Name: White Street Well ID: �—S' Well Diameter: 2 inches Depth to Bottom: j 6. 0<c feet Pumping Rate: /0U__1? / 3OrnL/min DATE: q J ( V 2 'Z GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): T. Martinez Initial Depth to Water: S,1138 feet Water Column Thickness: /p , '70 feet System Volume: I .7 mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 ® ®•• Dis ORP Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at q 10 Signature: • Date: QA/QC Sign Off: Date: 7 rl$ •-21— %%til) GOLDER DATE: 'i -Zo —ZZ GROUNDWATER SAMPLING LOG Project Name: White Street Project Number: GL19131339 Well ID: rj Sampler(s): T. Martinez Well Diameter: 2 inches Initial Depth to Water: 7. 2 C.� feet Depth to Bottom: 1 7 , c o feet Water Column Thickness: c/ . 20 feet Pumping Rate: I v� mL/min. System Volume: C6C5? mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder MP-15 ® ® Dis • ' • Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at q53 VVC/)'rftt (L S U "U "J 1 K S Signature: 2� QA/QC Sign Off: Date: C- — Z_-o - z 2 Date: "7 -[g - 2-L %%til) GOLDER Project Name: Well ID: _ Well Diameter: Depth to Bottom: Pumping Rate: White Street -% 2 inches 71 o feet 115 mL/min. DATE: q - ZG' Z GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s):=Mc+�'},r1.�2 $' 1'.M Initial Depth to Water: 2, N,3 feet Water Column Thickness: I y ,'Z 7 feet System Volume: 7 / mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 Time pH (S.U.) Sp. Cond. (US/cm) Turb (NTU) Dis 02 (mg/L) Amp. ORP (millivolts) DTW (feet) 0q�i 3 s.� 5 U.o 1.'8 3.to )40 ,.3 13.E -7 �LI� 6U 3 8.a 2.2 3.�b Lvl, 0'15 1 5,60 7,5io.-7 2 4 X4,1 11.0 1 111,5 13,U 6455 S. -7 115.1-1 3,25 t-113 17.0 zle. L/.64 09 5cl S• 56 Zo, I 3 .z LAv TT.i S, I W,0 lvn:3 5,5 6 1 Cf el. 1 3 -o3 23o. IV .1( U U-1 5'. S . 0 2 .5 C1 L-1 61 1.z . 23 4 19 14.19 1 Cf 5,0 .,73 �,�3 1d,0 y.v ► .-2 —loll loll M Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at Signature: /`- ` Date: LJ `Z,;' Z- QA/QC Sign Off: Date: 7--r c- 2 Z %%%%I) GOLDER Project Name: White Street Well ID: 74 - -7 R Well Diameter: 2 inches Depth to Bottom: 0 S , S feet Pumping Rate: 100 mL/min. DATE: y- x a_ 2 7 GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): Triv.i Kj-qez g.-C�^ Initial Depth to Water: I-74Y feet Water Column Thickness: R5.6 Z feet System Volume: 11-1 H 3 mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 ® ®• Dis• • Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at 09 53 Signature: Date: QA/QC Sign Off: Date: 7—CF-2'L. %%til) GOLDER DATE: L+ m - -Z � GROUNDWATER SAMPLING LOG Project Name: White Street Project Number: GL19131339 Well ID: t- 2 Sampler(s): Well Diameter: 2 inches Initial Depth to Water: 00 feet Depth to Bottom: 35,00 feet Water Column Thickness: Z ,00 feet Pumping Rate: Z06 mL/min. System Volume: 7? 2 mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 Sp. Cond. ® ' , • ® • , Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at Signature: Date: QA/QC Sign Off: Date: 7--G5—?L, %%%I) GOLDER Project Name: White Street Well ID: 11- `t Well Diameter: 2 inches Depth to Bottom: Z S . Uy feet Pumping Rate: 13 mL/min. DATE: L/ - /9 - Z Z GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): 7 M� r },n fZ B-em Initial Depth to Water: feet Water Column Thickness: 6 y feet System Volume: 665 mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 ®Sp. Cond. ® Dis • ./L) • (millivolts) Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at Ib 21 Signature: QA/QC Sign Off: Date: L/ / `! - 2 ? Date: 7- t s —22 GOLDER Project Name: Well ID: Well Diameter: Depth to Bottom Pumping Rate: Equipment: White Street 2 inches feet 1 mL/min. DATE: `1 ` lei -2 GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): Initial Depth to Water:, 4y feet Water Column Thickness: I q,.3 / feet System Volume: LLti mL YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder MP-15 Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at I ?j 14 Signature: Y� Date: r l y- 2 Z QA/QC Sign Off: Date: X%til) GOLDER Project Name: White Street Well ID:rhw-1 Well Diameter: 2 inches Depth to Bottom: I tied feet Pumping Rate: to (� mL/min DATE: ` I _ 'ZA �2- GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): T. Martinez Initial Depth to Water: 6.3 S feet Water Column Thickness: 95' feet System Volume: mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at (Z30 (frUr-tu-cp-' �Ur4" 110 Signature: QA/QC Sign Off: Date: Za -v1' Date: 7.- =j w .1-1-Z X%%J) GOLDER Project Name: Well ID: Well Diameter: Depth to Bottom: Pumping Rate: White Street MI - ZSOei lZv inches feet mL/min. DATE: N _, 9 _ -z Z GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): 'T. /'' 4 r f ✓►e z ice, Initial Depth to Water: -23 feet Water Column Thickness: 7 feet System Volume: 6 'S mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 ®Sp. Cond. ® Dis• ' ORP Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at ) 1 -2-Z . Signature: /-` G/ QA/QC Sign Off: Date: 1,1 ` 1 c ` 2_Z Date: 7►-�f `ZZ NNtil) GOLDER Project Name: Well ID: Well Diameter: Depth to Bottom Pumping Rate: White Street W - `-1 2 inches 7 3 q U feet mL/min DATE: + 2 (1 -ZZ GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): T. Martinez Initial Depth to Water: LI, ")1 feet Water Column Thickness: ,jq feet System Volume: C "?,5 mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder MP-15 �M��M •• (m/L) ORP (millivolts) Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at L, 7 Signature: Date: QA/QC Sign Off: Date: 7 -t9 2 2 N>`-.1) GOLDER Project Name: _ Sample ID: _ Sampling Location: Equipment: DATE: 2 I -2z SURFACE WATER SAMPLING LOG White Street Project No./Phase No.: SLv - I Sampler(s): Coy /V10 ��FAl0 Gree_ � Scn1M,k YSI, Turbidimeter Time 131.- pH s.u. � 71 Sp. Cond. us/cm Turb. ntu 3 Dis. OZ mg/L Temp. oC 5. ORP my l 2 7 .N GL19131339 Surface Water Sampling Location Sketch Sw I 1 Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QA/QC Sign Off: Date: Ll • L/ - 22 Date: \\aI) GOLDER DATE: SURFACE WATER SAMPLING LOG Project Name: White Street Project No./Phase No.: GL19131339 Sample ID: ►,, - 2 SaTpler(s): 'T_ e 2 Sampling Location: *Vesv d LF e f_ �S'r L C(Dss-N Equipment: YSI, Turbidimeter Time 'H I pH s.u. 7,S 2 Sp. Cond. us/cm -2-v1 Turb. ntu Dis.O2 mg/L - Temp. °C ORP my yS, v o� wv Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QA/QC Sign Off: TO tF --) Date: - 2 2 � Date: %%%%I) GOLDER DATE: L�- Z j_ 2 2 SURFACE WATER SAMPLING LOG Project Name: White Street Project No./Phase No.: GL19131339 Sample ID: SLv -3 Sampler(s): Sampling Location: Equipment: YSI, Turbidimeter Time pH S.U. Sp. Cond. us/cm ZU2,U Turb. ntu t7 Dis.O2 mg/L 3-1 7 Temp. °C l q (-7 so ORP my (U.b �-e,n,�e Surface Water Sampling Location Sketch Sw -3 c t I 1 Comments (sample methodology, weather conditions, color, silt, etc.): Signature: L QA/QC Sign Off: Date: t- -7 (` li"Z Date: o-R-/- 2. )! XXtiI) GOLDER Project Name: _ Sample ID: _ Sampling Location: Equipment: White Street SLv - 4 Time IZ45 pH s 7 S�SM. Sp. Cond. us/cm Turb. ntu 9-3S Dis. 02 mg/L 3S Temp. oC i5 ORP my �2- DATE: V— ) -Z 1 SURFACE WATER SAMPLING LOG Project No./Phase No.: GL19131339 Sampler(s): i r YSI, Turbidimeter Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: �Q - - QA/QC Sign Off: Date: ]�K ` q-zl -2 Z- Date: a /-2 2. N%ti') GOLDER DATE: �/�% 2Z- SURFACE WATER SAMPLING LOG Project Name: White Street Project No./Phase No.: GL19131339 Sample ID: s w - 5 Sampler(s): svx Sampling Location: Equipment: YSI, Turbidimeter Time c� (S- S.U.pH 7.11 Sp. Cond. us/cm H3 Turb. ntu �' 1 Dis. 02 mg/L Temp. 0C i's- Li ORP my ��- N Surface Water Sampling Location Sketch 1 Sw-5 Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QA/QC Sign Off: Date: 't -Lol -T2 Date: Q? / - > > APPENDIX B April 2022 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 Thursday, May 5, 2022 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.105, Project Name/Desc: White Street LF-Phase II- Spring ENCO Workorder(s): CF05186,CF05681 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory between Wednesday, April 20, 2022 and Friday, April 22, 2022. 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, Amanda L. Gaines 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 74 PROJECT NARRATIVE Date: May 5, 2022 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 11- Spring Lab ID: CF05186 CF05681 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 The 8260D Continuing Calibration Verification (CCV) exhibited a high bias for Acrylonitrile, Bromomethane, and Vinyl acetate; however, these analytes were not detected in the associated samples. The Method Blank (MB) had a positive result for Chloride; however the concentration is less than ten percent of the associated sample result, which has minimal impact on the data. The spike recoveries for Alkalinity, Chloride, Nitrite, Nitrate/Nitrite, Sulfate, Sulfide, and TOC were outside control limits for the MS and/or MSD samples, the precision between duplicate spikes of Sulfate exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these analytes. Quality Control Remarks No Comments Other Comments Samples 4103-111, 4103-MW14, 4103-SMW3, and 4103-119 for the analysis of TOC may have been stored in a temperature controlled cooler that temporarily exceeded the maximum allowable temperature of 6°C. The laboratory does not suspect any impact on data quality. If any additional information is required, please contact the laboratory. All samples received under this work order arrived in acceptable conditions. The samples were not checked for chlorine, as it is not required. 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. Amanda Gaines 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 74 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-IIl Lab ID: CF05186-01 Sampled: 04/19/22 09:15 Received: 04/20/22 13:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 05/17/22 04/26/22 11:06 04/26/22 23:04 EPA 310.2 NO PREP 05/03/22 04/28/22 12:22 04/28/22 15:39 EPA 353.2 NO PREP 04/21/22 09:15 04/20/22 15:40 04/20/22 17:14 EPA 353.2 [CALC] 04/21/22 09:15 04/29/22 07:51 04/29/22 11:37 EPA 353.2 NO PREP 05/17/22 04/29/22 07:51 04/29/22 11:37 EPA 6010D EPA 3005A 10/16/22 04/25/22 15:12 04/26/22 10:46 EPA 6020E EPA 3005A 10/16/22 04/25/22 01:38 04/27/22 10:30 EPA 8260D EPA 5030B_MS 05/03/22 04/25/22 15:30 04/25/22 19:48 EPA 8260D EPA 5030B_MS 05/03/22 04/26/22 11:04 04/26/22 11:45 RSK 175 Same 05/03/22 04/27/22 00:00 04/27/22 12:56 SM 4500S2 D-2011 NO PREP 04/26/22 04/21/22 17:05 04/21/22 17:17 SM 531OB-2011 NO PREP 05/17/22 04/25/22 07:25 04/25/22 15:02 Volatile Fatty Acids NA 05/17/22 05/04/22 13:30 05/04/22 16:56 Client ID: 4103-II2 Lab ID: CF05186-02 Sampled: 04/19/22 14:15 Received: 04/20/22 13:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/16/22 04/25/22 15:12 04/26/22 10:49 EPA 6020E EPA 3005A 10/16/22 04/25/22 01:38 04/27/22 11:00 EPA 8260D EPA 5030B_MS 05/03/22 04/25/22 15:30 04/25/22 20:16 EPA 8260D EPA 5030B_MS 05/03/22 04/26/22 11:04 04/26/22 12:10 Client ID: 4103-II3 Lab ID: CF05186-03 Sampled: 04/19/22 13:34 Received: 04/20/22 13:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/16/22 04/25/22 15:12 04/26/22 10:51 EPA 6020E EPA 3005A 10/16/22 04/25/22 01:38 04/27/22 11:14 EPA 8260D EPA 5030B_MS 05/03/22 04/25/22 15:30 04/25/22 20:43 EPA 8260D EPA 5030B_MS 05/03/22 04/26/22 11:04 04/26/22 12:36 Client ID: 4303-II4A Lab ID: CF05186-04 Sampled: 04/19/22 11:15 Received: 04/20/22 13:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/16/22 04/26/22 03:48 04/26/22 14:16 EPA 6020E EPA 3005A 10/16/22 04/25/22 01:38 04/27/22 11:18 EPA 8260D EPA 5030B_MS 05/03/22 04/25/22 15:30 04/25/22 21:11 EPA 8260D EPA 5030B_MIS 05/03/22 04/26/22 11:04 04/26/22 13:02 Client ID: 4103-II5 Lab ID: CF05186-05 Sampled: 04/19/22 10:25 Received: 04/20/22 13:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(sl EPA 6010D EPA 3005A 10/16/22 04/26/22 03:48 04/26/22 14:18 EPA 6020E EPA 3005A 10/16/22 04/25/22 01:38 04/27/22 11:22 EPA 8260D EPA 5030B_MS 05/03/22 04/25/22 15:30 04/25/22 21:39 EPA 8260D EPA 5030B_MS 05/03/22 04/26/22 11:04 04/26/22 13:28 Client ID: 4103-II8 Lab ID: CF05186-07 Sampled: 04/19/22 14:23 Received: 04/20/22 13:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/16/22 04/26/22 03:48 04/26/22 14:26 EPA 6020B EPA 3005A 10/16/22 04/25/22 01:38 04/27/22 11:27 EPA 8260D EPA 503013_MS 05/03/22 04/25/22 15:30 04/25/22 22:06 EPA 8260D EPA 5030B_MS 05/03/22 04/26/22 11:04 04/26/22 13:54 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 74 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-II12 Lab ID: CF05186-08 Sampled: 04/19/22 13:35 Received: 04/20/22 13:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/16/22 04/26/22 03:48 04/26/22 14:29 EPA 6020E EPA 3005A 10/16/22 04/25/22 01:38 04/27/22 11:31 EPA 8260D EPA 5030B_MS 05/03/22 04/25/22 15:30 04/25/22 22:34 EPA 8260D EPA 503013_MS 05/03/22 04/26/22 11:04 04/26/22 14:19 Client ID: 4103-MW14 Lab ID: CF05186-09 Sampled: 04/19/22 08:45 Received: 04/20/22 13:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 05/17/22 04/26/22 11:06 04/26/22 23:19 EPA 310.2 NO PREP 05/03/22 04/28/22 12:22 04/28/22 15:40 EPA 353.2 NO PREP 04/21/22 08:45 04/20/22 15:40 04/20/22 17:15 EPA 353.2 [CALC] 04/21/22 08:45 04/29/22 07:51 04/29/22 11:38 EPA 353.2 NO PREP 05/17/22 04/29/22 07:51 04/29/22 11:38 EPA 6010D EPA 3005A 10/16/22 04/26/22 03:48 04/26/22 14:31 EPA 6020E EPA 3005A 10/16/22 04/25/22 01:38 04/27/22 11:35 EPA 8260D EPA 503013_MS 05/03/22 04/25/22 15:30 04/25/22 23:02 EPA 8260D EPA 5030B_MIS 05/03/22 04/26/22 11:04 04/26/22 14:45 RSK 175 Same 05/03/22 04/27/22 00:00 04/27/22 13:12 SM 4500S2 D-2011 NO PREP 04/26/22 04/21/22 17:05 04/21/22 17:17 SM 531OB-2011 NO PREP 05/17/22 04/25/22 07:25 04/25/22 15:25 Volatile Fatty Acids NA 05/17/22 05/04/22 13:30 05/04/22 17:40 Client ID: 4303-SMW3 Lab ID: CF05186-10 Sampled: 04/19/22 12:10 Received: 04/20/22 13:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 05/17/22 04/26/22 11:06 04/26/22 23:33 EPA 310.2 NO PREP 05/03/22 04/28/22 12:22 04/28/22 15:40 EPA 353.2 NO PREP 04/21/22 12:10 04/20/22 15:40 04/20/22 17:16 EPA 353.2 [CALC] 04/21/22 12:10 04/29/22 07:51 04/29/22 11:39 EPA 353.2 NO PREP 05/17/22 04/29/22 07:51 04/29/22 11:39 EPA 6010D EPA 3005A 10/16/22 04/26/22 03:48 04/26/22 14:34 EPA 6020E EPA 3005A 10/16/22 04/25/22 01:38 04/27/22 11:40 EPA 8260D EPA 5030B_MS 05/03/22 04/25/22 15:30 04/25/22 23:30 EPA 8260D EPA 503013_MS 05/03/22 04/26/22 11:04 04/26/22 15:11 RSK 175 Same 05/03/22 04/27/22 00:00 04/27/22 13:28 SM 4500S2 D-2011 NO PREP 04/26/22 04/21/22 17:05 04/21/22 17:17 SM 531OB-2011 NO PREP 05/17/22 04/25/22 07:25 04/25/22 15:43 Volatile Fatty Acids NA 05/17/22 05/04/22 13:30 05/04/22 18:24 Client ID: 4303-II3B Lab ID: CF05186-11 Sampled: 04/19/22 12:00 Received: 04/20/22 13:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/16/22 04/26/22 03:48 04/26/22 14:36 EPA 6020E EPA 3005A 10/16/22 04/25/22 01:38 04/27/22 11:44 EPA 8260D EPA 5030B_MS 05/03/22 04/25/22 15:30 04/25/22 23:57 EPA 8260D EPA 503013_MS 05/03/22 04/26/22 11:04 04/26/22 15:37 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 74 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-II9 Lab ID: CF05186-12 Sampled: 04/19/22 10:40 Received: 04/20/22 13:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 05/17/22 04/27/22 09:22 04/27/22 15:53 EPA 310.2 NO PREP 05/03/22 04/28/22 12:22 04/28/22 15:41 EPA 353.2 NO PREP 04/21/22 10:40 04/20/22 15:40 04/20/22 17:17 EPA 353.2 [CALC] 04/21/22 10:40 04/29/22 07:51 04/29/22 11:40 EPA 353.2 NO PREP 05/17/22 04/29/22 07:51 04/29/22 11:40 EPA 6010D EPA 3005A 10/16/22 04/26/22 03:48 04/26/22 14:39 EPA 6020E EPA 3005A 10/16/22 04/25/22 01:38 04/27/22 11:48 EPA 8260D EPA 5030B_MS 05/03/22 04/25/22 15:30 04/26/22 00:25 EPA 8260D EPA 5030B_MS 05/03/22 04/26/22 11:04 04/26/22 16:02 RSK 175 Same 05/03/22 04/27/22 00:00 04/27/22 13:44 SM 4500S2 D-2011 NO PREP 04/26/22 04/21/22 17:05 04/21/22 17:17 SM 531OB-2011 NO PREP 05/17/22 04/25/22 07:25 04/25/22 16:02 Volatile Fatty Acids NA 05/17/22 05/04/22 13:30 05/04/22 19:08 Client ID: 4303-DuplicateII Lab ID: CF05186-13 Sampled: 04/19/22 00:00 Received: 04/20/22 13:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/16/22 04/26/22 03:48 04/26/22 14:41 EPA 6020E EPA 3005A 10/16/22 04/25/22 01:38 04/27/22 11:52 EPA 8260D EPA 5030B_MS 05/03/22 04/25/22 15:30 04/26/22 00:53 EPA 8260D EPA 5030B_MS 05/03/22 04/26/22 11:04 04/26/22 16:28 Client ID: 4303-Trip Blank II Lab ID: CF05186-14 Sampled: 04/19/22 08:45 Received: 04/20/22 13:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 5030B_MS 05/03/22 04/25/22 15:30 04/25/22 19:20 EPA 8260D EPA 5030B_MIS 05/03/22 04/26/22 11:04 04/26/22 16:54 Client ID: 4103-II6 Lab ID: CF05681-01 Sampled: 04/20/22 10:40 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/17/22 04/26/22 08:17 04/29/22 13:15 EPA 6020B EPA 3005A 10/17/22 04/26/22 03:53 04/27/22 15:07 EPA 8260D EPA 5030B_MS 05/04/22 04/26/22 20:28 04/27/22 16:38 EPA 8260D EPA 5030B_MS 05/04/22 04/27/22 12:43 04/27/22 18:41 Client ID: 4103-II7 Lab ID: CF05681-02 Sampled: 04/20/22 10:11 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/17/22 04/26/22 08:17 04/29/22 13:17 EPA 6020B EPA 3005A 10/17/22 04/26/22 03:53 04/27/22 15:11 EPA 8260D EPA 503013_MS 05/04/22 04/26/22 20:28 04/27/22 17:06 EPA 8260D EPA 5030B_MS 05/04/22 04/27/22 12:43 04/27/22 19:07 Client ID: 4103-II7B Lab ID: CF05681-03 Sampled: 04/20/22 09:15 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/17/22 04/26/22 08:17 04/29/22 13:20 EPA 6020E EPA 3005A 10/17/22 04/26/22 03:58 04/27/22 15:44 EPA 8260D EPA 5030B_MS 05/04/22 04/26/22 20:28 04/27/22 17:35 EPA 8260D EPA 5030B_MS 05/04/22 04/27/22 12:43 04/27/22 19:33 Client ID: 4303-SMW1 Lab ID: CF05681-04 Sampled: 04/20/22 09:30 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/17/22 04/26/22 08:17 04/29/22 13:22 EPA 6020E EPA 3005A 10/17/22 04/26/22 03:58 04/27/22 15:49 EPA 8260D EPA 5030B_MS 05/04/22 04/25/22 15:30 04/26/22 01:20 EPA 8260D EPA 5030B_MS 05/04/22 04/27/22 12:43 04/27/22 19:59 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Pager) Of 74 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-SMW4 Lab ID: CF05681-05 Sampled: 04/20/22 11:15 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/17/22 04/26/22 08:17 04/29/22 13:33 EPA 6020E EPA 3005A 10/17/22 04/26/22 03:58 04/27/22 15:53 EPA 8260D EPA 503013_MS 05/04/22 04/25/22 15:30 04/26/22 01:48 EPA 8260D EPA 503013_MS 05/04/22 04/27/22 12:43 04/27/22 20:24 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 74 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4103-IIl Lab ID: CF05186-01 Analvte Results Flag MDL Q Units Method Notes 1,4-Dichlorobenzene 9.2 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 150 D 4.0 10 ug/L EPA 8260D Acetic Acid 11 0.18 0.20 mg/L Volatile Fatty Acids Barium - Total 293 1.10 10.0 ug/L EPA 6010D Chlorobenzene 3.1 0.17 1.0 ug/L EPA 8260D Chromium - Total 5.61 J 1.40 10.0 ug/L EPA 6010D Cobalt - Total 24.7 1.40 10.0 ug/L EPA 6010D Methane 0.0576 0.00400 0.00500 mg/L RSK 175 Nickel - Total 23.5 2.20 10.0 ug/L EPA 6010D Sulfate as SO4 11 2.9 5.0 mg/L EPA 300.0 Tetrahydrofuran 13 0.53 1.0 ug/L EPA 8260D Total Alkalinity as CaCO3 1000000 D 140000 150000 ug/L EPA 310.2 Total Orqanic Carbon 50 0.90 1.0 mq/L SM 531OB-2011 I Client ID: 4103-II2 Lab ID: CF05186-02 Analvte Results Flag MDL Q Units Method Notes 1,1-Dichloroethane 3.3 0.13 1.0 ug/L EPA 8260D 1,4-Dioxane 2.3 0.80 2.0 ug/L EPA 8260D Barium - Total 79.4 1.10 10.0 ug/L EPA 6010D cis-1,2-Dichloroethene 3.6 0.15 1.0 ug/L EPA 8260D Lead - Total 3.75 J 3.10 10.0 ug/L EPA 6010D Client ID: 4103-II3 Lab ID: CF05186-03 Analvte Results Flag MDL Q Units Method Notes 1,1-Dichloroethane 2.8 0.13 1.0 ug/L EPA 8260D Barium - Total 140 1.10 10.0 ug/L EPA 6010D Chromium - Total 3.10 J 1.40 10.0 ug/L EPA 6010D Cobalt - Total 5.72 J 1.40 10.0 ug/L EPA 6010D Nickel - Total 5.93 J 2.20 10.0 ug/L EPA 6010D Zinc - Total 5.22 J 4.40 10.0 ug/L EPA 6010D Client ID: 4303-II4A Lab ID: CF05186-04 Analvte Results Flag MDL Q Units Method Notes 1,4-Dioxane 45 0.80 2.0 ug/L EPA 8260D Barium - Total 142 1.10 10.0 ug/L EPA 6010D Cobalt - Total 1.45 J 1.40 10.0 ug/L EPA 6010D Nickel - Total 26.9 2.20 10.0 ug/L EPA 6010D Client ID: 4103-IIS Lab ID: CF05186-05 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 39.9 1.10 10.0 ug/L EPA 6010D Chromium - Total 1.64 J 1.40 10.0 ug/L EPA 6010D Cobalt - Total 2.93 J 1.40 10.0 ug/L EPA 6010D Vanadium - Total 6.21 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 10.5 4.40 10.0 uq/L EPA 6010D Client ID: 4103-II8 Lab ID: CF05186-07 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 340 D 4.0 10 ug/L EPA 8260D Barium - Total 171 1.10 10.0 ug/L EPA 6010D Benzene 0.87 J 0.15 1.0 ug/L EPA 8260D Chromium - Total 1.47 J 1.40 10.0 ug/L EPA 6010D Cobalt - Total 7.08 J 1.40 10.0 ug/L EPA 6010D Nickel- Total 128 2.20 10.0 ug/L EPA 6010D Tetrahydrofuran 21 0.53 1.0 ug/L EPA 8260D Client ID: 4103-II12 Lab ID: CF05186-08 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 57.0 1.10 10.0 ug/L EPA 6010D Zinc - Total 7.28 J 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 7 Of 74 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-MW34 Lab ID: CF05186-09 Analvte Results Flag MDL Q Units Method Notes Acetic Acid 0.18 J 0.18 0.20 mg/L Volatile Fatty Acids Barium - Total 10.8 1.10 10.0 ug/L EPA 6010D Chloride 11000 2200 5000 ug/L EPA 300.0 Sulfate as SO4 3.1 J 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 21000 14000 15000 ug/L EPA 310.2 Total Organic Carbon 1.5 0.90 1.0 mg/L SM 531OB-2011 Client ID: 4303-SMW3 Lab ID: CF05186-10 Analvte Results Flag MDL Q Units Method Notes 1,1-Dichloroethane 2.2 0.13 1.0 ug/L EPA 8260D 1,4-Dioxane 1.7 J 0.80 2.0 ug/L EPA 8260D Barium - Total 225 1.10 10.0 ug/L EPA 6010D Chloride 15000 2200 5000 ug/L EPA 300.0 cis-1,2-Dichloroethene 3.8 0.15 1.0 ug/L EPA 8260D Cobalt - Total 2.11 J 1.40 10.0 ug/L EPA 6010D Nitrate as N 0.33 0.041 0.10 mg/L EPA 353.2 Nitrate/Nitrite as N 0.33 0.041 0.10 mg/L EPA 353.2 Sulfate as SO4 22 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 220000 D 70000 75000 ug/L EPA 310.2 Total Organic Carbon 2.8 0.90 1.0 mg/L SM 531OB-2011 Client ID: 4103-II3B Lab ID: CF05186-11 Analvte Results Flag MDL Q Units Method Notes 1,4-Dioxane 3.4 0.80 2.0 ug/L EPA 8260D Barium - Total 158 1.10 10.0 ug/L EPA 6010D Cobalt - Total 3.08 J 1.40 10.0 ug/L EPA 6010D Lead - Total 3.27 J 3.10 10.0 ug/L EPA 6010D Client ID: 4103-II9 Lab ID: CF05186-12 Analvte Results Flag MDL Q Units Method Notes 1,4-Dioxane 1.7 J 0.80 2.0 ug/L EPA 8260D Barium - Total 68.6 1.10 10.0 ug/L EPA 6010D Chloride 32000 2200 5000 ug/L EPA 300.0 Cobalt - Total 1.43 J 1.40 10.0 ug/L EPA 6010D Sulfate as SO4 28 2.9 5.0 mg/L EPA 300.0 Total Alkalinity as CaCO3 240000 D 70000 75000 ug/L EPA 310.2 Total Organic Carbon 3.8 0.90 1.0 mg/L SM 531OB-2011 Zinc - Total 32.7 4.40 10.0 ug/L EPA 6010D Client ID: 4303-DuplicateII Lab ID: CF05186-13 Analvte Results Flag MDL Q Units Method Notes 1,4-Dichlorobenzene 1.3 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 44 0.80 2.0 ug/L EPA 8260D Barium - Total 139 1.10 10.0 ug/L EPA 6010D Chlorobenzene 1.3 0.17 1.0 ug/L EPA 8260D Nickel - Total 26.6 2.20 10.0 ug/L EPA 6010D Client ID: 4103-II6 Lab ID: CF05681-01 Analvte Results Flag MDL Q Units Method Notes 1,4-Dioxane 3.2 0.80 2.0 ug/L EPA 8260D Barium - Total 25.9 1.10 10.0 ug/L EPA 6010D Copper - Total 15.7 1.60 10.0 ug/L EPA 6010D Zinc - Total 9.95 1 4.40 10.0 ug/L EPA 6010D Client ID: 4103-II7 Lab ID: CF05681-02 Analvte Results Flag MDL Q Units Method Notes 1,4-Dioxane 2.1 0.80 2.0 ug/L EPA 8260D Barium - Total 25.2 1.10 10.0 ug/L EPA 6010D Chromium - Total 1.43 1 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 8 Of 74 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-II7B Lab ID: CF05681-03 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 0.80 J 0.80 2.0 ug/L EPA 8260D Barium - Total 33.7 1.10 10.0 ug/L EPA 6010D Client ID: 4303-SMW1 Lab ID: CF05681-04 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.1 J 0.80 2.0 ug/L EPA 8260D Barium - Total 111 1.10 10.0 ug/L EPA 6010D Cadmium - Total 9.55 0.360 1.00 ug/L EPA 6010D Chromium - Total 1.91 J 1.40 10.0 ug/L EPA 6010D Cobalt - Total 2.90 J 1.40 10.0 ug/L EPA 6010D Copper - Total 8.00 J 1.60 10.0 ug/L EPA 6010D Lead - Total 3.22 J 3.10 10.0 ug/L EPA 6010D Nickel - Total 2.71 J 2.20 10.0 ug/L EPA 6010D Zinc - Total 603 4.40 10.0 ug/L EPA 6010D Client ID: 4303-SMW4 Lab ID: CF05681-05 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 5.5 0.80 2.0 ug/L EPA 8260D Barium - Total 38.9 1.10 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 9 of 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II1 Lab Sample ID:CF05186-01 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 09:15 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 21)25026 EPA 8260D 04/25/22 19:48 RKY 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY 1,4-Dichlorobenzene [306-46-7]^ 9.2 ug/L 1 0.19 1.0 2D25026 EPA 8260D 04/25/22 19:48 RKY 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/25/22 19:48 RKY 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/25/22 19:48 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Acetone [67-64-1]^ 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/25/22 19:48 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/25/22 19:48 RKY QV-01 Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Carbon disulfide [75-15-0]^ 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Chlorobenzene [108-90-7]^ 3.1 ug/L 1 0.17 1.0 2D25026 EPA 8260D 04/25/22 19:48 RKY Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Ethylbenzene[100-41-4]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Styrene[100-42-5]^ 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Tetrahydrofuran [109-99-9]^ 13 ug/L 1 0.53 1.0 2D25026 EPA 8260D 04/25/22 19:48 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/25/22 19:48 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/25/22 19:48 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-IIl Lab Sample ID:CF05186-01 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 09:15 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MOIL POLL Batch Method Analyzed AX Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 2D25026 EPA 8260D 04/25/22 19:48 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 52 1 50.0 104 % 53-136 2D25026 EPA 6260D 0412512219:48 RKY Dlbromofluoromethane 54 1 50.0 108 % 67-129 2D25026 EPA 6260D 0412512219:48 RKY Toluene-d8 58 1 50.0 117 % 59-134 2D25026 EPA 6260D 0412512219:48 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MOIL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D25001 EPA 6020B 04/27/22 10:30 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D22018 EPA 6010D 04/26/22 10:46 JDH Barium [7440-39-3]^ 293 ug/L 1 1.10 10.0 2D22018 EPA 6010D 04/26/22 10:46 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D22018 EPA 6010D 04/26/22 10:46 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D22018 EPA 6010D 04/26/22 10:46 JDH Chromium [7440-47-3]^ 5.61 J ug/L 1 1.40 10.0 2D22018 EPA 6010D 04/26/22 10:46 JDH Cobalt[7440-48-4]^ 24.7 ug/L 1 1.40 10.0 2D22018 EPA 6010D 04/26/22 10:46 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D22018 EPA 6010D 04/26/22 10:46 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D22018 EPA 6010D 04/26/22 10:46 JDH Nickel[7440-02-O]^ 23.5 ug/L 1 2.20 10.0 2D22018 EPA 6010D 04/26/22 10:46 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D22018 EPA 6010D 04/26/22 10:46 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D22018 EPA 6010D 04/26/22 10:46 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D25001 EPA 6020B 04/27/22 10:30 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D22018 EPA 6010D 04/26/22 10:46 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 2D22018 EPA 6010D 04/26/22 10:46 JDH Classical Chemistry Parameters ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MOIL POLL Batch Method Analyzed Ay Notes Chloride[16887-00-6]^ 2200 U ug/L 1 2200 5000 2D26012 EPA 300.0 04/26/22 23:04 CB Nitrate as N [14797-55-8] 0.041 U mg/L 1 0.041 0.10 [CALC] EPA 353.2 04/29/22 11:37 MSE Nitrate/Nitrite as N^ 0.041 U mg/L 1 0.041 0.10 2D29011 EPA 353.2 04/29/22 11:37 MSE Nitrite as N [14797-65-0]^ 0.017 U mg/L 1 0.017 0.10 2D20027 EPA 353.2 04/20/22 17:14 MSE Sulfate as SO4 [14808-79-B]^ 31 mg/L 1 2.9 5.0 2D26012 EPA 300.0 04/26/22 23:04 CB Sulfide [18496-25-8]^ 10 U ug/L 1 10 100 2D21014 iM 4500S2 D-2011 04/21/22 17:17 JOC Total Alkalinity as CaCO3 [471-34-1]^ 1000000 D ug/L 10 140000 150000 2D28015 EPA 310.2 04/28/22 15:39 MSE Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl 1,4-Dioxane [123-91-1]^ Surrogates Toluene-d8 Results Flaa Units DF MOIL POLL Batch Method Analyzed Ay Notes 150 D ug/L 5 4.0 10 2D26034 EPA 8260D 04/26/22 11:45 KKW Results DF Soike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes 4.9 1 5.00 97 % 75-125 2D26034 EPA 8260D 0412612211:45 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 of %4 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-IIl Lab Sample ID:CF05186-01 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 09:15 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) Dissolved Gases by GC Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Ethane [74-84-0] 0.00510 U mg/L 1 0.00510 0.00600 2D27008 RSK 175 04/27/22 12:56 JMW Ethene [74-85-1] 0.00510 U mg/L 1 0.00510 0.00600 2D27008 RSK 175 04/27/22 12:56 JMW Methane [74-82-8] 0.0576 mg/L 1 0.00400 0.00500 2D27008 RSK 175 04/27/22 12:56 JMW Volatile Fatty Acids by HPLC Analyte FCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Acetic Acid [64-19-7] 11 mg/L 1 0.18 0.20 2EO4036 ✓olatile Fatty Acids 05/04/22 16:56 JFI Butyric Acid [107-92-6] 0.089 U mg/L 1 0.089 0.10 2EO4036 ✓olatile Fatty Acids 05/04/22 16:56 JFI Hexanoic Acid [142-62-1] 0.26 U mg/L 1 0.26 0.50 2EO4036 ✓olatile Fatty Acids 05/04/22 16:56 JFI iso-Hexanoic Acid [646-07-1] 0.44 U mg/L 1 0.44 0.50 2EO4036 ✓olatile Fatty Acids 05/04/22 16:56 JFI iso-Pentanoic Acid [503-74-2] 0.18 U mg/L 1 0.18 0.20 2EO4036 ✓olatile Fatty Acids 05/04/22 16:56 JFI Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 0.13 U mg/L 1 0.13 0.14 2EO4036 ✓olatile Fatty Acids 05/04/22 16:56 JFI [50-21-5/594-61-6] Pentanoic Acid [109-52-4] 0.14 U mg/L 1 0.14 0.20 2EO4036 ✓olatile Fatty Acids 05/04/22 16:56 JFI Propionic Acid [79-09-4] 0.065 U mg/L 1 0.065 0.10 2EO4036 ✓olatile Fatty Acids 05/04/22 16:56 JFI Pyruvic Acid [127-17-3] 0.021 U mg/L 1 0.021 0.070 2EO4036 ✓olatile Fatty Acids 05/04/22 16:56 JFI Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffy Notes Trimethylacetic acid 19 1 20.0 93 % 50-150 2EO4036 Volatile Fatty Acid., 0510412216:56 JFI Classical Chemistry Parameters A - ENCO Orlando certified analyte [NC 424] Analyte fCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed By Notes Total Organic CarbonA 50 mg/L 1 0.90 1.0 2D25008 SM 531OB-2011 04/25/22 15:02 KG FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 of 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II2 Lab Sample ID:CF05186-02 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 14:15 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 21)25026 EPA 8260D 04/25/22 20:16 RKY 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY 1,1-Dichloroethane [75-34-3]A 3.3 ug/L 1 0.13 1.0 2D25026 EPA 8260D 04/25/22 20:16 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/25/22 20:16 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/25/22 20:16 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Acetone [67-64-1]^ 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/25/22 20:16 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/25/22 20:16 RKY QV-01 Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Chlorobenzene[108-90-7]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY cis-1,2-Dichloroethene [156-59-2]A 3.6 ug/L 1 0.15 1.0 2D25026 EPA 8260D 04/25/22 20:16 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Ethylbenzene[100-41-4]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Styrene[100-42-5]^ 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/25/22 20:16 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/25/22 20:16 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II2 Lab Sample ID:CF05186-02 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 14:15 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 2D25026 EPA 8260D 04/25/22 20:16 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 50 1 50.0 100 % 53-136 2D25026 EPA 6260D 04125122 20:16 RKY Dibromofluoromethane 57 1 50.0 114 % 67-129 2D25026 EPA 6260D 04125122 20:16 RKY Toluene-d8 54 1 50.0 109 % 59-134 2D25026 EPA 6260D 04125122 20:16 RKY 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 2D25001 EPA 6020B 04/27/22 11:00 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D22018 EPA 6010D 04/26/22 10:49 JDH Barium [7440-39-3]^ 79.4 ug/L 1 1.10 10.0 2D22018 EPA 6010D 04/26/22 10:49 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D22018 EPA 6010D 04/26/22 10:49 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D22018 EPA 6010D 04/26/22 10:49 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D22018 EPA 6010D 04/26/22 10:49 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D22018 EPA 6010D 04/26/22 10:49 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D22018 EPA 6010D 04/26/22 10:49 JDH Lead [7439-92-1]^ 3.75 J ug/L 1 3.10 10.0 2D22018 EPA 6010D 04/26/22 10:49 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D22018 EPA 6010D 04/26/22 10:49 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D22018 EPA 6010D 04/26/22 10:49 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D22018 EPA 6010D 04/26/22 10:49 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D25001 EPA 6020B 04/27/22 11:00 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D22018 EPA 6010D 04/26/22 10:49 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 2D22018 EPA 6010D 04/26/22 10:49 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]^ 2.3 ug/L 1 0.80 2.0 2D26034 EPA 8260D 04/26/22 12:10 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.0 1 5.00 100 % 75-125 2D26034 EPA 8260D 0412612212:10 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 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II3 Lab Sample ID:CF05186-03 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 13:34 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 21)25026 EPA 8260D 04/25/22 20:43 RKY 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY 1,1-Dichloroethane [75-34-3]A 2.8 ug/L 1 0.13 1.0 2D25026 EPA 8260D 04/25/22 20:43 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/25/22 20:43 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/25/22 20:43 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Acetone [67-64-1]^ 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/25/22 20:43 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/25/22 20:43 RKY QV-01 Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Chlorobenzene[108-90-7]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Ethylbenzene[100-41-4]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Styrene[100-42-5]^ 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/25/22 20:43 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/25/22 20:43 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 15 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II3 Lab Sample ID:CF05186-03 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 13:34 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 2D25026 EPA 8260D 04/25/22 20:43 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 53 1 50.0 106 % 53-136 2D25026 EPA 6260D 04125122 20:43 RKY Dibromofluoromethane 53 1 50.0 106 % 67-129 2D25026 EPA 6260D 04125122 20:43 RKY Toluene-d8 55 1 50.0 110 % 59-134 2D25026 EPA 6260D 04125122 20:43 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D25001 EPA 6020B 04/27/22 11:14 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D22018 EPA 6010D 04/26/22 10:51 JDH Barium [7440-39-3]^ 140 ug/L 1 1.10 10.0 2D22018 EPA 6010D 04/26/22 10:51 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D22018 EPA 6010D 04/26/22 10:51 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D22018 EPA 6010D 04/26/22 10:51 JDH Chromium [7440-47-3]^ 3.10 J ug/L 1 1.40 10.0 2D22018 EPA 6010D 04/26/22 10:51 JDH Cobalt[7440-48-4]A 5.72 J ug/L 1 1.40 10.0 2D22018 EPA 6010D 04/26/22 10:51 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D22018 EPA 6010D 04/26/22 10:51 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D22018 EPA 6010D 04/26/22 10:51 JDH Nickel[7440-02-O]^ 5.93 J ug/L 1 2.20 10.0 2D22018 EPA 6010D 04/26/22 10:51 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D22018 EPA 6010D 04/26/22 10:51 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D22018 EPA 6010D 04/26/22 10:51 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D25001 EPA 6020B 04/27/22 11:14 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D22018 EPA 6010D 04/26/22 10:51 JDH Zinc[7440-66-6]^ 5.22 J ug/L 1 4.40 10.0 2D22018 EPA 6010D 04/26/22 10:51 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flaa 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 2D26034 EPA 8260D 04/26/22 12:36 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.3 1 5.00 105 % 75-125 2D26034 EPA 8260D 041261221226 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 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II4A Lab Sample ID:CF05186-04 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 11:15 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 21)25026 EPA 8260D 04/25/22 21:11 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/25/22 21:11 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/25/22 21:11 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/25/22 21:11 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/25/22 21:11 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/25/22 21:11 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 17 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II4A Lab Sample ID:CF05186-04 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 11:15 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 2D25026 EPA 8260D 04/25/22 21:11 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 50 1 50.0 100 % 53-136 2D25026 EPA 6260D 04125122 21:11 RKY Dibromofluoromethane 56 1 50.0 113 % 67-129 2D25026 EPA 6260D 04125122 21:11 RKY Toluene-d8 58 1 50.0 115 % 59-134 2D25026 EPA 6260D 04125122 21:11 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D25001 EPA 6020B 04/27/22 11:18 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26002 EPA 6010D 04/26/22 14:16 JDH Barium [7440-39-3]^ 142 ug/L 1 1.10 10.0 2D26002 EPA 6010D 04/26/22 14:16 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26002 EPA 6010D 04/26/22 14:16 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26002 EPA 6010D 04/26/22 14:16 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:16 JDH Cobalt[7440-48-4]^ 1.45 J ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:16 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26002 EPA 6010D 04/26/22 14:16 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26002 EPA 6010D 04/26/22 14:16 JDH Nickel[7440-02-O]^ 26.9 ug/L 1 2.20 10.0 2D26002 EPA 6010D 04/26/22 14:16 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26002 EPA 6010D 04/26/22 14:16 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26002 EPA 6010D 04/26/22 14:16 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D25001 EPA 6020B 04/27/22 11:18 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:16 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 2D26002 EPA 6010D 04/26/22 14:16 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 45 ug/L 1 0.80 2.0 2D26034 EPA 8260D 04/26/22 13:02 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 4.7 1 5.00 93 % 75-125 2D26034 EPA 8260D 0412612213:02 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 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II5 Lab Sample ID:CF05186-05 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 10:25 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 21)25026 EPA 8260D 04/25/22 21:39 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/25/22 21:39 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/25/22 21:39 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/25/22 21:39 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/25/22 21:39 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/25/22 21:39 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 19 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II5 Lab Sample ID:CF05186-05 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 10:25 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 2D25026 EPA 8260D 04/25/22 21:39 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 49 1 50.0 98 % 53-136 2D25026 EPA 8260D 04125122 21:39 RKY Dibromofluoromethane 56 1 50.0 111 % 67-129 2D25026 EPA 8260D 04125122 21:39 RKY Toluene-d8 53 1 50.0 105 % 59-134 2D25026 EPA 6260D 04125122 21:39 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D25001 EPA 6020B 04/27/22 11:22 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26002 EPA 6010D 04/26/22 14:18 JDH Barium [7440-39-3]^ 39.9 ug/L 1 1.10 10.0 2D26002 EPA 6010D 04/26/22 14:18 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26002 EPA 6010D 04/26/22 14:18 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26002 EPA 6010D 04/26/22 14:18 JDH Chromium [7440-47-3]^ 1.64 J ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:18 JDH Cobalt[7440-48-4]A 2.93 J ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:18 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26002 EPA 6010D 04/26/22 14:18 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26002 EPA 6010D 04/26/22 14:18 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26002 EPA 6010D 04/26/22 14:18 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26002 EPA 6010D 04/26/22 14:18 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26002 EPA 6010D 04/26/22 14:18 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D25001 EPA 6020B 04/27/22 11:22 JDH Vanadium [7440-62-2]^ 6.21 J ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:18 JDH Zinc[7440-66-6]^ 10.5 ug/L 1 4.40 10.0 2D26002 EPA 6010D 04/26/22 14:18 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flaa 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 2D26034 EPA 8260D 04/26/22 13:28 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 4.9 1 5.00 99 % 75-125 2D26034 EPA 8260D 0412612213:28 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 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II8 Lab Sample ID:CF05186-07 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 14:23 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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]A 0.17 U ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 1,1-Dichloroethane [75-34-3]A 0.13 U ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 1,1-Dichloroethene [75-35-4]A 0.21 U ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 1,2,3-Trichloropropane [96-18-4]A 0.23 U ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 U ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 1,2-Dibromoethane [106-93-4]A 0.66 U ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 1,2-Dichlorobenzene [95-50-1]A 0.19 U ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 1,2-Dichloroethane [107-06-2]A 0.21 U ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 1,2-Dichloropropane [78-87-5]A 0.10 U ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 1,4-Dichlorobenzene [106-46-7]A 0.19 U ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/25/22 22:06 RKY 4-Methyl-2-pentanone [108-10-1]A 1.1 U ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Acetone [67-64-1]A 10 U ug/L 1 10 20 21)25026 EPA 8260D 04/25/22 22:06 RKY Acrylonitrile [107-13-1]A 3.5 U ug/L 1 3.5 10 21)25026 EPA 8260D 04/25/22 22:06 RKY QV-01 Benzene [71-43-2]A 0.87 J ug/L 1 0.15 1.0 2D25026 EPA 8260D 04/25/22 22:06 RKY Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Bromodichloromethane [75-27-4]A 0.17 U ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Bromoform [75-25-2]A 0.22 U ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Chlorobenzene[108-90-7]A 0.17 U ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Chloroform [67-66-3]A 0.18 U ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY cis-1,2-Dichloroethene [156-59-2]A 0.15 U ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Ethylbenzene[100-41-4]A 0.13 U ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Iodomethane [74-88-4]A 1.7 U ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Styrene[100-42-5]A 0.11 U ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Tetrahydrofuran [109-99-9]A 21 ug/L 1 0.53 1.0 2D25026 EPA 8260D 04/25/22 22:06 RKY Toluene [108-88-3]A 0.14 U ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY trans-1,2-Dichloroethene [156-60-5]A 0.21 U ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY trans-1,3-Dichloropropene [10061-02-6]A 0.15 U ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Trichloroethene [79-01-6]A 0.15 U ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Trichlorofluoromethane [75-69-4]A 0.24 U ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/25/22 22:06 RKY QV-01 Vinyl chloride [75-01-4]A 0.32 U ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/25/22 22:06 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 21 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II8 Lab Sample ID:CF05186-07 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 14:23 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 2D25026 EPA 8260D 04/25/22 22:06 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 96 % 53-136 2D25026 EPA 8260D 04125122 22:06 RKY Dibromofluoromethane 53 1 50.0 106 % 67-129 2D25026 EPA 8260D 04125122 22:06 RKY Toluene-d8 55 1 50.0 111 % 59-134 2D25026 EPA 6260D 04125122 22:06 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D25001 EPA 6020B 04/27/22 11:27 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26002 EPA 6010D 04/26/22 14:26 JDH Barium [7440-39-3]^ 171 ug/L 1 1.10 10.0 2D26002 EPA 6010D 04/26/22 14:26 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26002 EPA 6010D 04/26/22 14:26 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26002 EPA 6010D 04/26/22 14:26 JDH Chromium [7440-47-3]^ 1.47 J ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:26 JDH Cobalt[7440-48-4]A 7.08 J ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:26 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26002 EPA 6010D 04/26/22 14:26 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26002 EPA 6010D 04/26/22 14:26 JDH Nickel[7440-02-O]^ 128 ug/L 1 2.20 10.0 2D26002 EPA 6010D 04/26/22 14:26 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26002 EPA 6010D 04/26/22 14:26 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26002 EPA 6010D 04/26/22 14:26 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D25001 EPA 6020B 04/27/22 11:27 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:26 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 2D26002 EPA 6010D 04/26/22 14:26 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 340 D ug/L 5 4.0 10 2D26034 EPA 8260D 04/26/22 13:54 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 100 % 75-125 2D26034 EPA 8260D 0412612213:54 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 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II12 Lab Sample ID:CF05186-08 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 13:35 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/25/22 22:34 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/25/22 22:34 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/25/22 22:34 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/25/22 22:34 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/25/22 22:34 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 23 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II12 Lab Sample ID:CF05186-08 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 13:35 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 2D25026 EPA 8260D 04/25/22 22:34 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 47 1 50.0 93 % 53-136 2D25026 EPA 8260D 04125122 22:34 RKY Dibromofluoromethane 55 1 50.0 110 % 67-129 2D25026 EPA 8260D 04125122 22:34 RKY Toluene-d8 56 1 50.0 113 % 59-134 2D25026 EPA 6260D 04125122 22:34 RKY 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 2D25001 EPA 6020B 04/27/22 11:31 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26002 EPA 6010D 04/26/22 14:29 JDH Barium [7440-39-3]^ 57.0 ug/L 1 1.10 10.0 2D26002 EPA 6010D 04/26/22 14:29 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26002 EPA 6010D 04/26/22 14:29 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26002 EPA 6010D 04/26/22 14:29 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:29 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:29 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26002 EPA 6010D 04/26/22 14:29 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26002 EPA 6010D 04/26/22 14:29 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26002 EPA 6010D 04/26/22 14:29 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26002 EPA 6010D 04/26/22 14:29 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26002 EPA 6010D 04/26/22 14:29 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D25001 EPA 6020B 04/27/22 11:31 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:29 JDH Zinc[7440-66-6]^ 7.28 J ug/L 1 4.40 10.0 2D26002 EPA 6010D 04/26/22 14:29 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 2D26034 EPA 8260D 04/26/22 14:19 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.1 1 5.00 102 % 75-125 2D26034 EPA 8260D 0412612214:19 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 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW14 Lab Sample ID:CF05186-09 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 08:45 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez 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]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/25/22 23:02 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/25/22 23:02 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/25/22 23:02 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/25/22 23:02 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/25/22 23:02 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 25 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW14 Lab Sample ID:CF05186-09 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 08:45 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez 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 2D25026 EPA 8260D 04/25/22 23:02 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 50 1 50.0 100 % 53-136 2D25026 EPA 6260D 04125122 23:02 RKY Dlbromofluoromethane 51 1 50.0 103 % 67-129 2D25026 EPA 6260D 04125122 23:02 RKY Toluene-d8 57 1 50.0 114 % 59-134 2D25026 EPA 6260D 04125122 23:02 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D25001 EPA 6020B 04/27/22 11:35 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26002 EPA 6010D 04/26/22 14:31 JDH Barium [7440-39-3]^ 10.8 ug/L 1 1.10 10.0 2D26002 EPA 6010D 04/26/22 14:31 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26002 EPA 6010D 04/26/22 14:31 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26002 EPA 6010D 04/26/22 14:31 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:31 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:31 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26002 EPA 6010D 04/26/22 14:31 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26002 EPA 6010D 04/26/22 14:31 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26002 EPA 6010D 04/26/22 14:31 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26002 EPA 6010D 04/26/22 14:31 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26002 EPA 6010D 04/26/22 14:31 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D25001 EPA 6020B 04/27/22 11:35 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:31 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 2D26002 EPA 6010D 04/26/22 14:31 JDH Classical Chemistry Parameters ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Chloride [16887-00-6]^ 11000 ug/L 1 2200 5000 2D26012 EPA 300.0 04/26/22 23:19 CB Nitrate as N [14797-55-8] 0.041 U mg/L 1 0.041 0.10 [CALC] EPA 353.2 04/29/22 11:38 MSE Nitrate/Nitrite as N^ 0.041 U mg/L 1 0.041 0.10 2D29011 EPA 353.2 04/29/22 11:38 MSE Nitrite as N [14797-65-0]^ 0.017 U mg/L 1 0.017 0.10 2D20027 EPA 353.2 04/20/22 17:15 MSE Sulfate as SO4 [14808-79-B]^ 3.1 J mg/L 1 2.9 5.0 2D26012 EPA 300.0 04/26/22 23:19 CB Sulfide [18496-25-8]^ 10 U ug/L 1 10 100 2D21014 iM 4500S2 D-2011 04/21/22 17:17 JOC Total Alkalinity as CaCO3 [471-34-1]^ 21000 ug/L 1 14000 15000 2D28015 EPA 310.2 04/28/22 15:40 MSE Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl 1,4-Dioxane [123-91-1]^ Surrogates Toluene-d8 Results Flaa Units DF MDL POLL Batch Method Analyzed gy Notes 0.80 U ug/L 1 0.80 2.0 2D26034 EPA 8260D 04/26/22 14:45 KKW Results DF Soike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes 5.1 1 5.00 101 % 75-125 2D26034 EPA 8260D 0412612214:45 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 26 of %4 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW14 Lab Sample ID:CF05186-09 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 08:45 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez Dissolved Gases by GC Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Ethane [74-84-0] 0.00510 U mg/L 1 0.00510 0.00600 2D27008 RSK 175 04/27/22 13:12 JMW Ethene [74-85-1] 0.00510 U mg/L 1 0.00510 0.00600 2D27008 RSK 175 04/27/22 13:12 JMW Methane [74-82-8] 0.00400 U mg/L 1 0.00400 0.00500 2D27008 RSK 175 04/27/22 13:12 JMW Volatile Fatty Acids by HPLC Analyte FCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Acetic Acid [64-19-7] 0.18 J mg/L 1 0.18 0.20 2EO4036 ✓olatile Fatty Acids 05/04/22 17:40 JFI Butyric Acid [107-92-6] 0.089 U mg/L 1 0.089 0.10 2EO4036 ✓olatile Fatty Acids 05/04/22 17:40 JFI Hexanoic Acid [142-62-1] 0.26 U mg/L 1 0.26 0.50 2EO4036 ✓olatile Fatty Acids 05/04/22 17:40 JFI iso-Hexanoic Acid [646-07-1] 0.44 U mg/L 1 0.44 0.50 2EO4036 ✓olatile Fatty Acids 05/04/22 17:40 JFI iso-Pentanoic Acid [503-74-2] 0.18 U mg/L 1 0.18 0.20 2EO4036 ✓olatile Fatty Acids 05/04/22 17:40 JFI Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 0.13 U mg/L 1 0.13 0.14 2EO4036 ✓olatile Fatty Acids 05/04/22 17:40 JFI [50-21-5/594-61-6] Pentanoic Acid [109-52-4] 0.14 U mg/L 1 0.14 0.20 2EO4036 ✓olatile Fatty Acids 05/04/22 17:40 JFI Propionic Acid [79-09-4] 0.065 U mg/L 1 0.065 0.10 2EO4036 ✓olatile Fatty Acids 05/04/22 17:40 JFI Pyruvic Acid [127-17-3] 0.021 U mg/L 1 0.021 0.070 2EO4036 ✓olatile Fatty Acids 05/04/22 17:40 JFI Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffy Notes Trimethylacetic acid 21 1 20.0 105 % 50-150 2EO4036 Volatile Fatty Acid., 0510412217:40 JFI Classical Chemistry Parameters A - ENCO Orlando certified analyte [NC 424] Analyte fCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed By Notes Total Organic CarbonA 1.5 mg/L 1 0.90 1.0 2D25008 SM 531OB-2011 04/25/22 15:25 KG FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 27 of 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW3 Lab Sample ID: CF05186- 10 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 12:10 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez 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 21)25026 EPA 8260D 04/25/22 23:30 RKY 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY 1,1-Dichloroethane [75-34-3]A 2.2 ug/L 1 0.13 1.0 2D25026 EPA 8260D 04/25/22 23:30 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/25/22 23:30 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/25/22 23:30 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Acetone [67-64-1]^ 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/25/22 23:30 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/25/22 23:30 RKY QV-01 Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Chlorobenzene[108-90-7]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY cis-1,2-Dichloroethene [156-59-2]A 3.8 ug/L 1 0.15 1.0 2D25026 EPA 8260D 04/25/22 23:30 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Ethylbenzene[100-41-4]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Styrene[100-42-5]^ 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/25/22 23:30 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/25/22 23:30 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 28 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW3 Lab Sample ID:CF05186-10 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 12:10 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez 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 2D25026 EPA 8260D 04/25/22 23:30 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 50 1 50.0 99 % 53-136 2D25026 EPA 8260D 04125122 23:30 RKY Dlbromofluoromethane 56 1 50.0 112 % 67-129 2D25026 EPA 8260D 04125122 23:30 RKY Toluene-d8 55 1 50.0 110 % 59-134 2D25026 EPA 6260D 04125122 2330 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D25001 EPA 6020B 04/27/22 11:40 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26002 EPA 6010D 04/26/22 14:34 JDH Barium [7440-39-3]^ 225 ug/L 1 1.10 10.0 2D26002 EPA 6010D 04/26/22 14:34 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26002 EPA 6010D 04/26/22 14:34 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26002 EPA 6010D 04/26/22 14:34 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:34 JDH Cobalt[7440-48-4]^ 2.11 J ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:34 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26002 EPA 6010D 04/26/22 14:34 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26002 EPA 6010D 04/26/22 14:34 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26002 EPA 6010D 04/26/22 14:34 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26002 EPA 6010D 04/26/22 14:34 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26002 EPA 6010D 04/26/22 14:34 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D25001 EPA 6020B 04/27/22 11:40 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:34 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 2D26002 EPA 6010D 04/26/22 14:34 JDH Classical Chemistry Parameters ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Chloride [16887-00-6]^ 15000 ug/L 1 2200 5000 2D26012 EPA 300.0 04/26/22 23:33 CB Nitrate as N [14797-55-8] 0.33 mg/L 1 0.041 0.10 [CALC] EPA 353.2 04/29/22 11:39 MSE Nitrate/Nitrite as N^ 0.33 mg/L 1 0.041 0.10 2D29011 EPA 353.2 04/29/22 11:39 MSE Nitrite as N [14797-65-0]^ 0.017 U mg/L 1 0.017 0.10 2D20027 EPA 353.2 04/20/22 17:16 MSE Sulfate as SO4 [14808-79-B]^ 22 mg/L 1 2.9 5.0 2D26012 EPA 300.0 04/26/22 23:33 CB Sulfide [18496-25-8]^ 10 U ug/L 1 10 100 2D21014 iM 4500S2 D-2011 04/21/22 17:17 JOC Total Alkalinity as CaCO3 [471-34-1]^ 220000 D ug/L 5 70000 75000 2D28015 EPA 310.2 04/28/22 15:40 MSE Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl 1,4-Dioxane [123-91-1]^ Surrogates Toluene-d8 Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes 1.7 J ug/L 1 0.80 2.0 2D26034 EPA 8260D 04/26/22 15:11 KKW Results DF Soike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes 4.8 1 5.00 96 % 75-125 2D26034 EPA 8260D 0412612215:11 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 29 of %4 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW3 Lab Sample ID:CF05186-10 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 12:10 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez Dissolved Gases by GC Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Ethane [74-84-0] 0.00510 U mg/L 1 0.00510 0.00600 2D27008 RSK 175 04/27/22 13:28 JMW Ethene [74-85-1] 0.00510 U mg/L 1 0.00510 0.00600 2D27008 RSK 175 04/27/22 13:28 JMW Methane [74-82-8] 0.00400 U mg/L 1 0.00400 0.00500 2D27008 RSK 175 04/27/22 13:28 JMW Volatile Fatty Acids by HPLC Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Acetic Acid [64-19-7] 0.18 U mg/L 1 0.18 0.20 2EO4036 ✓olatile Fatty Acids 05/04/22 18:24 JFI Butyric Acid [107-92-6] 0.089 U mg/L 1 0.089 0.10 2EO4036 ✓olatile Fatty Acids 05/04/22 18:24 JFI Hexanoic Acid [142-62-1] 0.26 U mg/L 1 0.26 0.50 2EO4036 ✓olatile Fatty Acids 05/04/22 18:24 JFI iso-Hexanoic Acid [646-07-1] 0.44 U mg/L 1 0.44 0.50 2EO4036 ✓olatile Fatty Acids 05/04/22 18:24 JFI iso-Pentanoic Acid [503-74-2] 0.18 U mg/L 1 0.18 0.20 2EO4036 ✓olatile Fatty Acids 05/04/22 18:24 JFI Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 0.13 U mg/L 1 0.13 0.14 2EO4036 ✓olatile Fatty Acids 05/04/22 18:24 JFI [50-21-5/594-61-6] Pentanoic Acid [109-52-4] 0.14 U mg/L 1 0.14 0.20 2EO4036 ✓olatile Fatty Acids 05/04/22 18:24 JFI Propionic Acid [79-09-4] 0.065 U mg/L 1 0.065 0.10 2EO4036 ✓olatile Fatty Acids 05/04/22 18:24 JFI Pyruvic Acid [127-17-3] 0.021 U mg/L 1 0.021 0.070 2EO4036 ✓olatile Fatty Acids 05/04/22 18:24 JFI Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffy Notes Trimethylacetic acid 21 1 20.0 106 % 50-150 2EO4036 Volatile Fatty Acid., 0510412218:24 JFI Classical Chemistry Parameters A - ENCO Orlando certified analyte [NC 424] Analyte fCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed By Notes Total Organic CarbonA 2.8 mg/L 1 0.90 1.0 2D25008 SM 531OB-2011 04/25/22 15:43 KG FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 30 of 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II3B Lab Sample ID: CF05186- 11 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 12:00 Work Order: CF05186 Project: White Street LF-Phase II- Spring 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 By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/25/22 23:57 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/25/22 23:57 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/25/22 23:57 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/25/22 23:57 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/25/22 23:57 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 31 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II3B Lab Sample ID:CF05186-11 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 12:00 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez 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 2D25026 EPA 8260D 04/25/22 23:57 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 49 1 50.0 98 % 53-136 2D25026 EPA 8260D 04125122 23:57 RKY Dibromofluoromethane 63 1 50.0 125 % 67-129 2D25026 EPA 8260D 04125122 23:57 RKY Toluene-d8 55 1 50.0 110 % 59-134 2D25026 EPA 6260D 04125122 23:57 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D25001 EPA 6020B 04/27/22 11:44 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26002 EPA 6010D 04/26/22 14:36 JDH Barium [7440-39-3]^ 158 ug/L 1 1.10 10.0 2D26002 EPA 6010D 04/26/22 14:36 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26002 EPA 6010D 04/26/22 14:36 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26002 EPA 6010D 04/26/22 14:36 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:36 JDH Cobalt[7440-48-4]^ 3.08 J ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:36 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26002 EPA 6010D 04/26/22 14:36 JDH Lead [7439-92-1]^ 3.27 J ug/L 1 3.10 10.0 2D26002 EPA 6010D 04/26/22 14:36 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26002 EPA 6010D 04/26/22 14:36 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26002 EPA 6010D 04/26/22 14:36 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26002 EPA 6010D 04/26/22 14:36 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D25001 EPA 6020B 04/27/22 11:44 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:36 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 2D26002 EPA 6010D 04/26/22 14:36 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 3.4 ug/L 1 0.80 2.0 2D26034 EPA 8260D 04/26/22 15:37 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.8 1 5.00 97 % 75-125 2D26034 EPA 8260D 041261221527 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 32 of 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II9 Lab Sample ID:CF05186-12 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 10:40 Work Order: CF05186 Project: White Street LF-Phase II- Spring 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 By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/26/22 00:25 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/26/22 00:25 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/26/22 00:25 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/26/22 00:25 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/26/22 00:25 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 33 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II9 Lab Sample ID:CF05186-12 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 10:40 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez 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 2D25026 EPA 8260D 04/26/22 00:25 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 51 1 50.0 102 % 53-136 2D25026 EPA 6260D 04126122 00:25 RKY Dlbromofluoromethane 55 1 50.0 109 % 67-129 2D25026 EPA 6260D 04126122 00:25 RKY Toluene-d8 55 1 50.0 109 % 59-134 2D25026 EPA 6260D 04126122 00:25 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D25001 EPA 6020B 04/27/22 11:48 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26002 EPA 6010D 04/26/22 14:39 JDH Barium [7440-39-3]^ 68.6 ug/L 1 1.10 10.0 2D26002 EPA 6010D 04/26/22 14:39 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26002 EPA 6010D 04/26/22 14:39 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26002 EPA 6010D 04/26/22 14:39 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:39 JDH Cobalt[7440-48-4]^ 1.43 J ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:39 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26002 EPA 6010D 04/26/22 14:39 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26002 EPA 6010D 04/26/22 14:39 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26002 EPA 6010D 04/26/22 14:39 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26002 EPA 6010D 04/26/22 14:39 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26002 EPA 6010D 04/26/22 14:39 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D25001 EPA 6020B 04/27/22 11:48 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:39 JDH Zinc[7440-66-6]^ 32.7 ug/L 1 4.40 10.0 2D26002 EPA 6010D 04/26/22 14:39 JDH Classical Chemistry Parameters ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Chloride [16887-00-6]^ 32000 ug/L 1 2200 5000 2D27012 EPA 300.0 04/27/22 15:53 CB Nitrate as N [14797-55-8] 0.041 U mg/L 1 0.041 0.10 [CALC] EPA 353.2 04/29/22 11:40 MSE Nitrate/Nitrite as N^ 0.041 U mg/L 1 0.041 0.10 2D29011 EPA 353.2 04/29/22 11:40 MSE Nitrite as N [14797-65-0]^ 0.017 U mg/L 1 0.017 0.10 2D20027 EPA 353.2 04/20/22 17:17 MSE Sulfate as SO4 [14808-79-B]^ 28 mg/L 1 2.9 5.0 2D27012 EPA 300.0 04/27/22 15:53 CB Sulfide [18496-25-8]^ 10 U ug/L 1 10 100 2D21014 iM 4500S2 D-2011 04/21/22 17:17 JOC Total Alkalinity as CaCO3 [471-34-1]^ 240000 D ug/L 5 70000 75000 2D28015 EPA 310.2 04/28/22 15:41 MSE Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl 1,4-Dioxane [123-91-1]^ Surrogates Toluene-d8 Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes 1.7 J ug/L 1 0.80 2.0 2D26034 EPA 8260D 04/26/22 16:02 KKW Results DF Soike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes 5.0 1 5.00 99 % 75-125 2D26034 EPA 8260D 0412612216:02 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 34 of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II9 Lab Sample ID:CF05186-12 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 10:40 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez Dissolved Gases by GC Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Ethane [74-84-0] 0.00510 U mg/L 1 0.00510 0.00600 2D27008 RSK 175 04/27/22 13:44 JMW Ethene [74-85-1] 0.00510 U mg/L 1 0.00510 0.00600 2D27008 RSK 175 04/27/22 13:44 JMW Methane [74-82-8] 0.00400 U mg/L 1 0.00400 0.00500 2D27008 RSK 175 04/27/22 13:44 JMW Volatile Fatty Acids by HPLC Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Acetic Acid [64-19-7] 0.18 U mg/L 1 0.18 0.20 2EO4036 ✓olatile Fatty Acids 05/04/22 19:08 JFI Butyric Acid [107-92-6] 0.089 U mg/L 1 0.089 0.10 2EO4036 ✓olatile Fatty Acids 05/04/22 19:08 JFI Hexanoic Acid [142-62-1] 0.26 U mg/L 1 0.26 0.50 2EO4036 ✓olatile Fatty Acids 05/04/22 19:08 JFI iso-Hexanoic Acid [646-07-1] 0.44 U mg/L 1 0.44 0.50 2EO4036 ✓olatile Fatty Acids 05/04/22 19:08 JFI iso-Pentanoic Acid [503-74-2] 0.18 U mg/L 1 0.18 0.20 2EO4036 ✓olatile Fatty Acids 05/04/22 19:08 JFI Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 0.13 U mg/L 1 0.13 0.14 2EO4036 ✓olatile Fatty Acids 05/04/22 19:08 JFI [50-21-5/594-61-6] Pentanoic Acid [109-52-4] 0.14 U mg/L 1 0.14 0.20 2EO4036 ✓olatile Fatty Acids 05/04/22 19:08 JFI Propionic Acid [79-09-4] 0.065 U mg/L 1 0.065 0.10 2EO4036 ✓olatile Fatty Acids 05/04/22 19:08 JFI Pyruvic Acid [127-17-3] 0.021 U mg/L 1 0.021 0.070 2EO4036 ✓olatile Fatty Acids 05/04/22 19:08 JFI Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffy Notes Trimethylacetic acid 22 1 20.0 109 % 50-150 2EO4036 Volatile Fatty Acid., 0510412219:08 JFI Classical Chemistry Parameters A - ENCO Orlando certified analyte [NC 424] Analyte fCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed By Notes Total Organic CarbonA 3.8 mg/L 1 0.90 1.0 2D25008 SM 531OB-2011 04/25/22 16:02 KG FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 35 of 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-DuplicateII Lab Sample ID:CF05186-13 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 00:00 Work Order: CF05186 Project: White Street LF-Phase II- Spring 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 By Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 1,4-Dichlorobenzene [306-46-7]^ 1.3 ug/L 1 0.19 1.0 2D25026 EPA 8260D 04/26/22 00:53 RKY 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/26/22 00:53 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Acetone [67-64-1]^ 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/26/22 00:53 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/26/22 00:53 RKY QV-01 Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Carbon disulfide [75-15-0]^ 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Chlorobenzene [108-90-7]^ 1.3 ug/L 1 0.17 1.0 2D25026 EPA 8260D 04/26/22 00:53 RKY Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Ethylbenzene[100-41-4]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Styrene[100-42-5]^ 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/26/22 00:53 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/26/22 00:53 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 36 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-DuplicateII Lab Sample ID:CF05186-13 Received: 04/20/22 13:15 Matrix: Ground Water Sampled:04/19/22 00:00 Work Order: CF05186 Project: White Street LF-Phase II- Spring 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 Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 2D25026 EPA 8260D 04/26/22 00:53 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 51 1 50.0 102 % 53-136 2D25026 EPA 6260D 04126122 00:53 RKY Dibromofluoromethane 53 1 50.0 106 % 67-129 2D25026 EPA 6260D 04126122 00:53 RKY Toluene-d8 54 1 50.0 108 % 59-134 2D25026 EPA 6260D 04126122 00:53 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D25001 EPA 6020B 04/27/22 11:52 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26002 EPA 6010D 04/26/22 14:41 JDH Barium [7440-39-3]^ 139 ug/L 1 1.10 10.0 2D26002 EPA 6010D 04/26/22 14:41 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26002 EPA 6010D 04/26/22 14:41 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26002 EPA 6010D 04/26/22 14:41 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:41 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:41 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26002 EPA 6010D 04/26/22 14:41 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26002 EPA 6010D 04/26/22 14:41 JDH Nickel[7440-02-O]^ 26.6 ug/L 1 2.20 10.0 2D26002 EPA 6010D 04/26/22 14:41 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26002 EPA 6010D 04/26/22 14:41 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26002 EPA 6010D 04/26/22 14:41 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D25001 EPA 6020B 04/27/22 11:52 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26002 EPA 6010D 04/26/22 14:41 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 2D26002 EPA 6010D 04/26/22 14:41 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 44 ug/L 1 0.80 2.0 2D26034 EPA 8260D 04/26/22 16:28 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.0 1 5.00 101 % 75-125 2D26034 EPA 8260D 0412612216:28 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 37 of 74 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103-Trip Blank II Lab Sample ID:CF05186-14 Received: 04/20/22 13:15 Matrix: Water Sampled:04/19/22 08:45 Work Order: CF05186 Project: White Street LF-Phase II- Spring 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 By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/25/22 19:20 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/25/22 19:20 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/25/22 19:20 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/25/22 19:20 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/25/22 19:20 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 38 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-Trip Blank II Lab Sample ID:CF05186-14 Received: 04/20/22 13:15 Matrix: Water Sampled:04/19/22 08:45 Work Order: CF05186 Project: White Street LF-Phase II- Spring Sampled By: ENCO 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 2D25026 EPA 8260D 04/25/22 19:20 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 53 1 50.0 105 % 53-136 2D25026 EPA 6260D 0412512219:20 RKY Dibromofluoromethane 54 1 50.0 109 % 67-129 2D25026 EPA 6260D 0412512219:20 RKY Toluene-d8 54 1 50.0 107 % 59-134 2D25026 EPA 6260D 0412512219:20 RKY Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flaa 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 2D26034 EPA 8260D 04/26/22 16:54 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.7 1 5.00 95 % 75-125 2D26034 EPA 8260D 0412612216:54 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 39 Of 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II6 Lab Sample ID:CF05681-01 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 10:40 Work Order: CF05681 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 21)26026 EPA 8260D 04/27/22 16:38 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)26026 EPA 8260D 04/27/22 16:38 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)26026 EPA 8260D 04/27/22 16:38 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)26026 EPA 8260D 04/27/22 16:38 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)26026 EPA 8260D 04/27/22 16:38 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)26026 EPA 8260D 04/27/22 16:38 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 40 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II6 Lab Sample ID:CF05681-01 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 10:40 Work Order: CF05681 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 2D26026 EPA 8260D 04/27/22 16:38 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 95 % 53-136 2D26026 EPA 8260D 0412712216:38 RKY Dibromofluoromethane 51 1 50.0 101 % 67-129 2D26026 EPA 8260D 0412712216:38 RKY Toluene-d8 54 1 50.0 108 % 59-134 2D26026 EPA 6260D 041271221638 RKY 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]^ 0.740 U ug/L 2 0.740 2.00 2D26003 EPA 6020B 04/27/22 15:07 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26006 EPA 6010D 04/29/22 13:15 JDH Barium [7440-39-3]^ 25.9 ug/L 1 1.10 10.0 2D26006 EPA 6010D 04/29/22 13:15 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26006 EPA 6010D 04/29/22 13:15 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26006 EPA 6010D 04/29/22 13:15 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:15 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:15 JDH Copper[7440-50-8]^ 15.7 ug/L 1 1.60 10.0 2D26006 EPA 6010D 04/29/22 13:15 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26006 EPA 6010D 04/29/22 13:15 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26006 EPA 6010D 04/29/22 13:15 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26006 EPA 6010D 04/29/22 13:15 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26006 EPA 6010D 04/29/22 13:15 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26003 EPA 6020B 04/27/22 15:07 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:15 JDH Zinc[7440-66-6]^ 9.95 J ug/L 1 4.40 10.0 2D26006 EPA 6010D 04/29/22 13:15 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]A 3.2 ug/L 1 0.80 2.0 2D27041 EPA 8260D 04/27/22 18:41 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 99 % 75-125 2D27041 EPA 8260D 0412712218:41 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 41 of 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II7 Lab Sample ID:CF05681-02 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 10:11 Work Order: CF05681 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)26026 EPA 8260D 04/27/22 17:06 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)26026 EPA 8260D 04/27/22 17:06 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)26026 EPA 8260D 04/27/22 17:06 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)26026 EPA 8260D 04/27/22 17:06 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)26026 EPA 8260D 04/27/22 17:06 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 42 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II7 Lab Sample ID:CF05681-02 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 10:11 Work Order: CF05681 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 2D26026 EPA 8260D 04/27/22 17:06 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 49 1 50.0 97 % 53-136 2D26026 EPA 8260D 0412712217:06 RKY Dibromofluoromethane 54 1 50.0 108 % 67-129 2D26026 EPA 8260D 0412712217:06 RKY Toluene-d8 54 1 50.0 107 % 59-134 2D26026 EPA 6260D 0412712217:06 RKY 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]^ 0.740 U ug/L 2 0.740 2.00 2D26003 EPA 6020B 04/27/22 15:11 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26006 EPA 6010D 04/29/22 13:17 JDH Barium [7440-39-3]^ 25.2 ug/L 1 1.10 10.0 2D26006 EPA 6010D 04/29/22 13:17 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26006 EPA 6010D 04/29/22 13:17 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26006 EPA 6010D 04/29/22 13:17 JDH Chromium [7440-47-3]^ 1.43 J ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:17 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:17 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26006 EPA 6010D 04/29/22 13:17 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26006 EPA 6010D 04/29/22 13:17 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26006 EPA 6010D 04/29/22 13:17 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26006 EPA 6010D 04/29/22 13:17 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26006 EPA 6010D 04/29/22 13:17 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26003 EPA 6020B 04/27/22 15:11 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:17 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 2D26006 EPA 6010D 04/29/22 13:17 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 2.1 ug/L 1 0.80 2.0 2D27041 EPA 8260D 04/27/22 19:07 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.7 1 5.00 93 % 75-125 2D27041 EPA 8260D 0412712219:07 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 43 of 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II7B Lab Sample ID:CF05681-03 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 09:15 Work Order: CF05681 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)26026 EPA 8260D 04/27/22 17:35 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)26026 EPA 8260D 04/27/22 17:35 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)26026 EPA 8260D 04/27/22 17:35 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)26026 EPA 8260D 04/27/22 17:35 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)26026 EPA 8260D 04/27/22 17:35 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 44 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II7B Lab Sample ID:CF05681-03 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 09:15 Work Order: CF05681 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 2D26026 EPA 8260D 04/27/22 17:35 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 49 1 50.0 98 % 53-136 2D26026 EPA 8260D 041271221735 RKY Dibromofluoromethane 56 1 50.0 112 % 67-129 2D26026 EPA 8260D 041271221735 RKY Toluene-d8 53 1 50.0 106 % 59-134 2D26026 EPA 6260D 041271221735 RKY 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]^ 0.740 U ug/L 2 0.740 2.00 2D26004 EPA 6020B 04/27/22 15:44 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26006 EPA 6010D 04/29/22 13:20 JDH Barium [7440-39-3]^ 33.7 ug/L 1 1.10 10.0 2D26006 EPA 6010D 04/29/22 13:20 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26006 EPA 6010D 04/29/22 13:20 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26006 EPA 6010D 04/29/22 13:20 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:20 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:20 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26006 EPA 6010D 04/29/22 13:20 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26006 EPA 6010D 04/29/22 13:20 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26006 EPA 6010D 04/29/22 13:20 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26006 EPA 6010D 04/29/22 13:20 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26006 EPA 6010D 04/29/22 13:20 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26004 EPA 6020B 04/27/22 15:44 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:20 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 2D26006 EPA 6010D 04/29/22 13:20 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 0.80 J ug/L 1 0.80 2.0 2D27041 EPA 8260D 04/27/22 19:33 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.0 1 5.00 99 % 75-125 2D27041 EPA 8260D 041271221933 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 45 of 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW1 Lab Sample ID:CF05681-04 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 09:30 Work Order: CF05681 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/26/22 01:20 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/26/22 01:20 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/26/22 01:20 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/26/22 01:20 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/26/22 01:20 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 46 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW1 Lab Sample ID:CF05681-04 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 09:30 Work Order: CF05681 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 2D25026 EPA 8260D 04/26/22 01:20 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 49 1 50.0 97 % 53-136 2D25026 EPA 8260D 04126122 01:20 RKY Dibromofluoromethane 56 1 50.0 112 % 67-129 2D25026 EPA 8260D 04126122 01:20 RKY Toluene-d8 57 1 50.0 113 % 59-134 2D25026 EPA 6260D 04126122 01:20 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D26004 EPA 6020B 04/27/22 15:49 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26006 EPA 6010D 04/29/22 13:22 JDH Barium [7440-39-3]^ III ug/L 1 1.10 10.0 2D26006 EPA 6010D 04/29/22 13:22 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26006 EPA 6010D 04/29/22 13:22 JDH Cadmium [7440-43-9]^ 9.55 ug/L 1 0.360 1.00 2D26006 EPA 6010D 04/29/22 13:22 JDH Chromium [7440-47-3]^ 1.91 J ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:22 JDH Cobalt[7440-48-4]^ 2.90 J ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:22 JDH Copper[7440-50-8]^ 8.00 J ug/L 1 1.60 10.0 2D26006 EPA 6010D 04/29/22 13:22 JDH Lead [7439-92-1]^ 3.22 J ug/L 1 3.10 10.0 2D26006 EPA 6010D 04/29/22 13:22 JDH Nickel[7440-02-O]^ 2.71 J ug/L 1 2.20 10.0 2D26006 EPA 6010D 04/29/22 13:22 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26006 EPA 6010D 04/29/22 13:22 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26006 EPA 6010D 04/29/22 13:22 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26004 EPA 6020B 04/27/22 15:49 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:22 JDH Zinc[7440-66-6]^ 603 ug/L 1 4.40 10.0 2D26006 EPA 6010D 04/29/22 13:22 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 1.1 J ug/L 1 0.80 2.0 2D27041 EPA 8260D 04/27/22 19:59 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.8 1 5.00 97 % 75-125 2D27041 EPA 8260D 0412712219:59 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 47 of 74 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW4 Lab Sample ID:CF05681-05 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 11:15 Work Order: CF05681 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 21)25026 EPA 8260D 04/26/22 01:48 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)25026 EPA 8260D 04/26/22 01:48 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)25026 EPA 8260D 04/26/22 01:48 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)25026 EPA 8260D 04/26/22 01:48 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)25026 EPA 8260D 04/26/22 01:48 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)25026 EPA 8260D 04/26/22 01:48 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 48 Of 74 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW4 Lab Sample ID:CF05681-05 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 11:15 Work Order: CF05681 Project: White Street LF-Phase II- Spring Sampled By:Travis Martinez/Darren Co) 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 2D25026 EPA 8260D 04/26/22 01:48 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 49 1 50.0 98 % 53-136 2D25026 EPA 8260D 04126122 01:48 RKY Dibromofluoromethane 60 1 50.0 119 % 67-129 2D25026 EPA 8260D 04126122 01:48 RKY Toluene-d8 55 1 50.0 110 % 59-134 2D25026 EPA 6260D 04126122 01:48 RKY 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]^ 0.740 U ug/L 2 0.740 2.00 2D26004 EPA 6020B 04/27/22 15:53 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26006 EPA 6010D 04/29/22 13:33 JDH Barium [7440-39-3]^ 38.9 ug/L 1 1.10 10.0 2D26006 EPA 6010D 04/29/22 13:33 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26006 EPA 6010D 04/29/22 13:33 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26006 EPA 6010D 04/29/22 13:33 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:33 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:33 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26006 EPA 6010D 04/29/22 13:33 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26006 EPA 6010D 04/29/22 13:33 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26006 EPA 6010D 04/29/22 13:33 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26006 EPA 6010D 04/29/22 13:33 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26006 EPA 6010D 04/29/22 13:33 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26004 EPA 6020B 04/27/22 15:53 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 13:33 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 2D26006 EPA 6010D 04/29/22 13:33 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 5.5 ug/L 1 0.80 2.0 2D27041 EPA 8260D 04/27/22 20:24 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 4.9 1 5.00 98 % 75-125 2D27041 EPA 8260D 04127122 20:24 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 49 of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D25026 - EPA 5030B MS Blank (2D25026-BLK1) Prepared: 04/25/2022 15:30 Analyzed: 04/25/2022 18:52 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 95 53-136 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 50 Of 74 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D25026 - EPA 5030B MS - Continued (� �Eo www.encolabs.com Blank (2D25026-BLK1) Continued Prepared: 04/25/2022 15:30 Analyzed: 04/25/2022 18:52 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Dibromofluoromethane 52 u9/L 50.0 103 67-129 Toluene-& 56 u9/L 50.0 111 59-134 LCS (21325026-BSI) Prepared: 04/25/2022 15:30 Analyzed: 04/25/2022 16:59 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 91 75-133 Benzene 18 1.0 ug/L 20.0 89 80-134 Chlorobenzene 18 1.0 ug/L 20.0 92 80-120 Toluene 17 1.0 ug/L 20.0 87 71-120 Trichloroethene 17 1.0 ug/L 20.0 87 74-120 Matrix Spike (2D25026-MS1) Prepared: 04/25/2022 15:30 Analyzed: 04/25/2022 17:27 Source: CF05678-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 19 1.0 ug/L 20.0 0.21 U 96 75-133 Benzene 20 1.0 ug/L 20.0 0.15 U 99 80-134 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 99 80-120 Toluene 18 1.0 ug/L 20.0 0.14 U 88 71-120 Trichloroethene 20 1.0 ug/L 20.0 0.15 U 101 74-120 Matrix Spike Dup (2D25026-MSD1) Prepared: 04/25/2022 15:30 Analyzed: 04/25/2022 17:56 Source: CF05678-09 Analvte 1,1-Dichloroethene Benzene Chlorobenzene Toluene Trichloroethene Batch 2D26026 - EPA 5030E MS Result 19 20 20 19 20 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 96 98 98 93 99 %REC Limits 75-133 80-134 80-120 71-120 74-120 RPD 0.4 0.9 1 6 2 RPD Limit Notes 20 17 16 17 22 Blank (2D26026-BLK3) Prepared: 04/26/2022 20:28 Analyzed: 04/27/2022 08:45 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 Pager) 1 Of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D26026 - EPA 5030B MS - Continued Blank (2D26026-BLK1) Continued Prepared: 04/26/2022 20:28 Analyzed: 04/27/2022 08:45 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC 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 47 u91L 50.0 95 53-136 Dibromofluoromethane 53 u91L 50.0 107 67-129 Toluene-d8 54 u91L 50.0 109 59-134 LCS (2D26026-BSI) Prepared: 04/26/2022 20:28 Analyzed: 04/27/2022 06:55 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 83 75-133 Benzene 18 1.0 ug/L 20.0 91 80-134 Chlorobenzene 18 1.0 ug/L 20.0 92 80-120 Toluene 19 1.0 ug/L 20.0 93 71-120 Trichloroethene 19 1.0 ug/L 20.0 94 74-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 52 of 74 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D26O26 - EPA 5O3OB MS - Continued (� �Eo www.encolabs.com Matrix Spike (2D26026-MS1) Prepared: 04/26/2022 20:28 Analyzed: 04/27/2022 07:23 Source: CFO5551-05 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 92 75-133 Benzene 20 1.0 ug/L 20.0 0.15 U 99 80-134 Chlorobenzene 24 1.0 ug/L 20.0 6.7 89 80-120 Toluene 18 1.0 ug/L 20.0 0.14 U 88 71-120 Trichloroethene 20 1.0 ug/L 20.0 0.15 U 102 74-120 Matrix Spike Dup (211326026-MS1131) Prepared: 04/26/2022 20:28 Analyzed: 04/27/2022 07:50 Source: CFO5551-05 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 105 75-133 14 20 Benzene 22 1.0 ug/L 20.0 0.15 U 112 80-134 12 17 Chlorobenzene 28 1.0 ug/L 20.0 6.7 104 80-120 12 16 Toluene 21 1.0 ug/L 20.0 0.14 U 103 71-120 16 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 107 74-120 5 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D22O18 - EPA 3OO5A Blank (2D22018-BLK1) Prepared: 04/25/2022 15:12 Analyzed: 04/26/2022 09:45 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 (2D22018-BS1) Prepared: 04/25/2022 15:12 Analyzed: 04/26/2022 09:52 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits Arsenic 204 10.0 ug/L 200 102 80-120 Barium 209 10.0 ug/L 200 104 80-120 Beryllium 20.3 1.00 ug/L 20.0 101 80-120 Cadmium 20.2 1.00 ug/L 20.0 101 80-120 Chromium 203 10.0 ug/L 200 101 80-120 Cobalt 206 10.0 ug/L 200 103 80-120 Copper 203 10.0 ug/L 200 101 80-120 Lead 202 10.0 ug/L 200 101 80-120 Nickel 202 10.0 ug/L 200 101 80-120 Selenium 207 10.0 ug/L 200 104 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 53 of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D22018 - EPA 3005A - Continued LCS (2D22018-BSI) Continued Prepared: 04/25/2022 15:12 Analyzed: 04/26/2022 09:52 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Silver 203 10.0 ug/L 200 102 80-120 Vanadium 201 10.0 ug/L 200 101 80-120 Zinc 209 10.0 ug/L 200 104 80-120 Matrix Spike (2D22018-MS3) Prepared: 04/25/2022 15:12 Analyzed: 04/26/2022 09:55 Source: CF04526-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 208 10.0 ug/L 200 7.60 U 104 75-125 Barium 427 10.0 ug/L 200 230 99 75-125 Beryllium 20.6 1.00 ug/L 20.0 0.160 U 103 75-125 Cadmium 19.8 1.00 ug/L 20.0 0.360 U 99 75-125 Chromium 203 10.0 ug/L 200 1.40 U 102 75-125 Cobalt 202 10.0 ug/L 200 1.40 U 101 75-125 Copper 198 10.0 ug/L 200 1.60 U 99 75-125 Lead 201 10.0 ug/L 200 3.10 U 101 75-125 Nickel 200 10.0 ug/L 200 2.20 U 100 75-125 Selenium 207 10.0 ug/L 200 6.20 U 104 75-125 Silver 204 10.0 ug/L 200 1.90 U 102 75-125 Vanadium 202 10.0 ug/L 200 1.40 U 101 75-125 Zinc 209 10.0 ug/L 200 4.40 U 104 75-125 Matrix Spike Dup (21322018-MS131) Prepared: 04/25/2022 15:12 Analyzed: 04/26/2022 09:58 Source: CF04526-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 213 10.0 ug/L 200 7.60 U 107 75-125 2 20 Barium 437 10.0 ug/L 200 230 103 75-125 2 20 Beryllium 20.8 1.00 ug/L 20.0 0.160 U 104 75-125 1 20 Cadmium 20.2 1.00 ug/L 20.0 0.360 U 101 75-125 2 20 Chromium 207 10.0 ug/L 200 1.40 U 104 75-125 2 20 Cobalt 208 10.0 ug/L 200 1.40 U 104 75-125 3 20 Copper 201 10.0 ug/L 200 1.60 U 101 75-125 2 20 Lead 206 10.0 ug/L 200 3.10 U 103 75-125 2 20 Nickel 203 10.0 ug/L 200 2.20 U 102 75-125 2 20 Selenium 208 10.0 ug/L 200 6.20 U 104 75-125 0.3 20 Silver 206 10.0 ug/L 200 1.90 U 103 75-125 1 20 Vanadium 205 10.0 ug/L 200 1.40 U 102 75-125 2 20 Zinc 214 10.0 ug/L 200 4.40 U 107 75-125 2 20 Post Spike (2D22018-PSI) Prepared: 04/25/2022 15:12 Analyzed: 04/26/2022 10:00 Source: CF04526-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.213 0.0100 mg/L 0.200 0.00662 103 80-120 Barium 0.434 0.0100 mg/L 0.200 0.230 102 80-120 Beryllium 0.0210 0.00100 mg/L 0.0200 3.39E-6 105 80-120 Cadmium 0.0206 0.00100 mg/L 0.0200 -0.000214 103 80-120 Chromium 0.207 0.0100 mg/L 0.200 0.00119 103 80-120 Cobalt 0.210 0.0100 mg/L 0.200 0.000999 104 80-120 Copper 0.202 0.0100 mg/L 0.200 -0.00108 101 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 54 of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D22O1B - EPA 3OO5A - Continued Post Spike (2D22018-PS1) Continued Prepared: 04/25/2022 15:12 Analyzed: 04/26/2022 10:00 Source: CF04526-OS Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Lead 0.209 0.0100 mg/L 0.200 0.000591 104 80-120 Nickel 0.205 0.0100 mg/L 0.200 0.00144 102 80-120 Selenium 0.215 0.0100 mg/L 0.200 0.000925 107 80-120 Silver 0.212 0.0100 mg/L 0.200 7.75E-5 106 80-120 Vanadium 0.205 0.0100 mg/L 0.200 -0.000793 103 80-120 Zinc 0.216 0.0100 mg/L 0.200 0.00437 106 80-120 Batch 1D25OO1 - EPA 3OO5A Blank (2D25001-BLK1) Prepared: 04/25/2022 01:38 Analyzed: 04/27/2022 10:21 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (2D25001-BSI) Prepared: 04/25/2022 01:38 Analyzed: 04/27/2022 10:26 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 Thallium 20.8 1.00 ug/L 20.0 104 80-120 Matrix Spike (2D25001-MS3) Prepared: 04/25/2022 01:38 Analyzed: 04/27/2022 10:34 Source: CF05186-01 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 43.8 2.00 ug/L 40.0 1.82 U 109 75-125 Thallium 40.0 2.00 ug/L 40.0 0.220 U 100 75-125 Matrix Spike Dup (21325001-MS131) Prepared: 04/25/2022 01:38 Analyzed: 04/27/2022 10:39 Source: CF05186-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 43.5 2.00 ug/L 40.0 0.740 U 109 75-125 0.3 20 Thallium 37.9 2.00 ug/L 40.0 0.220 U 95 75-125 5 20 Post Spike (2D25001-PS1) Prepared: 04/25/2022 01:38 Analyzed: 04/27/2022 10:43 Source: CF05186-01 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 0.122 109 75-125 Thallium 19.8 1.00 ug/L 20.0 0.0172 99 75-125 Batch 2D26OO2 - EPA 3OO5A Blank (2D26002-BLK3) Prepared: 04/26/2022 03:48 Analyzed: 04/26/2022 13:54 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 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 55 Of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26002 - EPA 3005A - Continued Blank (2D26002-BLK1) Continued Prepared: 04/26/2022 03:48 Analyzed: 04/26/2022 13:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 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 (2D26002-BS1) Prepared: 04/26/2022 03:48 Analyzed: 04/26/2022 14:03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 201 10.0 ug/L 200 100 80-120 Barium 206 10.0 ug/L 200 103 80-120 Beryllium 20.5 1.00 ug/L 20.0 102 80-120 Cadmium 20.5 1.00 ug/L 20.0 102 80-120 Chromium 204 10.0 ug/L 200 102 80-120 Cobalt 207 10.0 ug/L 200 104 80-120 Copper 203 10.0 ug/L 200 101 80-120 Lead 206 10.0 ug/L 200 103 80-120 Nickel 204 10.0 ug/L 200 102 80-120 Selenium 205 10.0 ug/L 200 102 80-120 Silver 204 10.0 ug/L 200 102 80-120 Vanadium 202 10.0 ug/L 200 101 80-120 Zinc 206 10.0 ug/L 200 103 80-120 Matrix Spike (2D26002-MS3) Prepared: 04/26/2022 03:48 Analyzed: 04/26/2022 14:05 Source: CF04300-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 204 10.0 ug/L 200 7.60 U 102 75-125 Barium 283 10.0 ug/L 200 81.5 101 75-125 Beryllium 20.7 1.00 ug/L 20.0 0.160 U 104 75-125 Cadmium 20.2 1.00 ug/L 20.0 0.360 U 101 75-125 Chromium 206 10.0 ug/L 200 1.40 U 103 75-125 Cobalt 207 10.0 ug/L 200 1.40 U 104 75-125 Copper 202 10.0 ug/L 200 1.60 U 101 75-125 Lead 205 10.0 ug/L 200 3.10 U 102 75-125 Nickel 201 10.0 ug/L 200 2.20 U 101 75-125 Selenium 208 10.0 ug/L 200 6.20 U 104 75-125 Silver 205 10.0 ug/L 200 1.90 U 102 75-125 Vanadium 204 10.0 ug/L 200 1.40 U 102 75-125 Zinc 558 10.0 ug/L 200 374 92 75-125 Matrix Spike Dup (2D26002-MSDS) Prepared: 04/26/2022 03:48 Analyzed: 04/26/2022 14:08 Source: CF04300-01 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 56 Of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26002 - EPA 3005A - Continued Matrix Spike Dup (2D26002-MSDS) Continued Prepared: 04/26/2022 03:48 Analyzed: 04/26/2022 14:08 Source: CF04300-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 204 10.0 ug/L 200 7.60 U 102 75-125 0.01 20 Barium 282 10.0 ug/L 200 81.5 100 75-125 0.2 20 Beryllium 20.8 1.00 ug/L 20.0 0.160 U 104 75-125 0.5 20 Cadmium 20.1 1.00 ug/L 20.0 0.360 U 100 75-125 0.8 20 Chromium 205 10.0 ug/L 200 1.40 U 102 75-125 0.5 20 Cobalt 207 10.0 ug/L 200 1.40 U 103 75-125 0.2 20 Copper 201 10.0 ug/L 200 1.60 U 101 75-125 0.1 20 Lead 206 10.0 ug/L 200 3.10 U 103 75-125 0.7 20 Nickel 200 10.0 ug/L 200 2.20 U 100 75-125 0.4 20 Selenium 210 10.0 ug/L 200 6.20 U 105 75-125 0.8 20 Silver 206 10.0 ug/L 200 1.90 U 103 75-125 0.4 20 Vanadium 203 10.0 ug/L 200 1.40 U 102 75-125 0.1 20 Zinc 556 10.0 ug/L 200 374 91 75-125 0.5 20 Post Spike (2D26002-PS1) Prepared: 04/26/2022 03:48 Analyzed: 04/26/2022 14:10 Source: CF04300-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.200 0.0100 mg/L 0.200 0.000714 100 80-120 Barium 0.284 0.0100 mg/L 0.200 0.0815 101 80-120 Beryllium 0.0208 0.00100 mg/L 0.0200 3.57E-5 104 80-120 Cadmium 0.0202 0.00100 mg/L 0.0200 -9.59E-5 101 80-120 Chromium 0.206 0.0100 mg/L 0.200 0.000716 102 80-120 Cobalt 0.207 0.0100 mg/L 0.200 0.000641 103 80-120 Copper 0.203 0.0100 mg/L 0.200 9.70E-5 101 80-120 Lead 0.206 0.0100 mg/L 0.200 -0.000375 103 80-120 Nickel 0.202 0.0100 mg/L 0.200 -0.00130 101 80-120 Selenium 0.214 0.0100 mg/L 0.200 0.00461 105 80-120 Silver 0.211 0.0100 mg/L 0.200 -9.53E-5 105 80-120 Vanadium 0.203 0.0100 mg/L 0.200 -0.000829 101 80-120 Zinc 0.565 0.0100 mg/L 0.200 0.374 96 80-120 Batch 2D26003 - EPA 3005A Blank (2D26003-BLK3) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 12:56 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (2D26003-BS1) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 13:00 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 20.7 1.00 ug/L 20.0 103 80-120 Thallium 20.7 1.00 ug/L 20.0 103 80-120 Matrix Spike (2D26003-MS1) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 13:09 Source: CF05187-04 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 57 Of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26003 - EPA 3OO5A - Continued Matrix Spike (2D26003-MS3) Continued Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 13:09 Source: CF05187-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.2 2.00 ug/L 40.0 0.740 U 106 75-125 Thallium 41.4 2.00 ug/L 40.0 0.220 U 103 75-125 Matrix Spike Dup (21326003-MS131) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 13:22 Source: CF05187-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 41.6 2.00 ug/L 40.0 0.740 U 104 75-125 2 20 Thallium 40.4 2.00 ug/L 40.0 0.220 U 101 75-125 2 20 Post Spike (2D26003-PS3) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 13:27 Source: CF05187-04 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 0.0394 109 75-125 Thallium 20.9 1.00 ug/L 20.0 0.0213 104 75-125 Batch 1D26OO4 - EPA 3OO5A Blank (2D26004-BLK1) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 15:16 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (2D26004-BSI) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 15:26 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 20.6 1.00 ug/L 20.0 103 80-120 Thallium 20.3 1.00 ug/L 20.0 101 80-120 Matrix Spike (2D26004-MS3) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 15:36 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 39.8 2.00 ug/L 40.0 0.740 U 99 75-125 Thallium 38.3 2.00 ug/L 40.0 0.220 U 96 75-125 Matrix Spike Dup (2D26004-MSD1) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 15:40 Source: CFO5551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 41.4 2.00 ug/L 40.0 0.740 U 103 75-125 4 20 Thallium 39.1 2.00 ug/L 40.0 0.220 U 98 75-125 2 20 Post Spike (21326004-PSI) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 16:06 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.3 1.00 ug/L 20.0 0.0420 107 75-125 Thallium 20.5 1.00 ug/L 20.0 0.0324 103 75-125 Batch 2D26OO6 - EPA 3OO5A FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 58 Of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Blank (2D26006-BLK3) Prepared: 04/26/2022 08:17 Analyzed: 04/29/2022 12:05 Spike Source %REC RPD Anala Result Flaa 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 (21326006-BSI) Prepared: 04/26/2022 08:17 Analyzed: 04/29/2022 12:15 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 194 10.0 ug/L 200 97 80-120 Barium 204 10.0 ug/L 200 102 80-120 Beryllium 19.7 1.00 ug/L 20.0 99 80-120 Cadmium 19.4 1.00 ug/L 20.0 97 80-120 Chromium 196 10.0 ug/L 200 98 80-120 Cobalt 199 10.0 ug/L 200 99 80-120 Copper 200 10.0 ug/L 200 100 80-120 Lead 196 10.0 ug/L 200 98 80-120 Nickel 194 10.0 ug/L 200 97 80-120 Selenium 203 10.0 ug/L 200 101 80-120 Silver 200 10.0 ug/L 200 100 80-120 Vanadium 195 10.0 ug/L 200 97 80-120 Zinc 200 10.0 ug/L 200 100 80-120 Matrix Spike (2D26006-MS3) Prepared: 04/26/2022 08:17 Analyzed: 04/29/2022 12:17 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 172 10.0 ug/L 200 7.60 U 86 75-125 Barium 282 10.0 ug/L 200 98.5 92 75-125 Beryllium 19.3 1.00 ug/L 20.0 0.160 U 97 75-125 Cadmium 17.6 1.00 ug/L 20.0 0.360 U 88 75-125 Chromium 189 10.0 ug/L 200 1.90 94 75-125 Cobalt 193 10.0 ug/L 200 10.2 91 75-125 Copper 188 10.0 ug/L 200 1.60 U 94 75-125 Lead 181 10.0 ug/L 200 3.10 U 90 75-125 Nickel 189 10.0 ug/L 200 4.92 92 75-125 Selenium 180 10.0 ug/L 200 6.20 U 90 75-125 Silver 200 10.0 ug/L 200 1.90 U 100 75-125 Vanadium 188 10.0 ug/L 200 1.40 U 94 75-125 Zinc 186 10.0 ug/L 200 4.40 U 93 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 59 Of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26OO6 - EPA 3OO5A - Continued Matrix Spike Dup (2D26006-MSDS) Prepared: 04/26/2022 08:17 Analyzed: 04/29/2022 12:26 Source: CFOSSSI-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 169 10.0 ug/L 200 7.60 U 84 75-125 2 20 Barium 286 10.0 ug/L 200 98.5 94 75-125 1 20 Beryllium 19.5 1.00 ug/L 20.0 0.160 U 97 75-125 0.6 20 Cadmium 17.2 1.00 ug/L 20.0 0.360 U 86 75-125 2 20 Chromium 190 10.0 ug/L 200 1.90 94 75-125 0.5 20 Cobalt 191 10.0 ug/L 200 10.2 90 75-125 1 20 Copper 190 10.0 ug/L 200 1.60 U 95 75-125 1 20 Lead 177 10.0 ug/L 200 3.10 U 89 75-125 2 20 Nickel 189 10.0 ug/L 200 4.92 92 75-125 0.3 20 Selenium 178 10.0 ug/L 200 6.20 U 89 75-125 0.7 20 Silver 200 10.0 ug/L 200 1.90 U 100 75-125 0.07 20 Vanadium 189 10.0 ug/L 200 1.40 U 95 75-125 0.5 20 Zinc 182 10.0 ug/L 200 4.40 U 91 75-125 2 20 Post Spike (2D26006-PS1) Prepared: 04/26/2022 08:17 Analyzed: 04/29/2022 12:28 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.181 0.0100 mg/L 0.200 -0.0117 90 80-120 Barium 0.298 0.0100 mg/L 0.200 0.0985 100 80-120 Beryllium 0.0208 0.00100 mg/L 0.0200 -9.67E-5 104 80-120 Cadmium 0.0186 0.00100 mg/L 0.0200 -0.000563 93 80-120 Chromium 0.203 0.0100 mg/L 0.200 0.00190 101 80-120 Cobalt 0.204 0.0100 mg/L 0.200 0.0102 97 80-120 Copper 0.204 0.0100 mg/L 0.200 -0.00348 102 80-120 Lead 0.191 0.0100 mg/L 0.200 -0.00260 96 80-120 Nickel 0.202 0.0100 mg/L 0.200 0.00492 98 80-120 Selenium 0.196 0.0100 mg/L 0.200 -0.0119 98 80-120 Silver 0.214 0.0100 mg/L 0.200 0.000729 106 80-120 Vanadium 0.202 0.0100 mg/L 0.200 -0.000694 101 80-120 Zinc 0.197 0.0100 mg/L 0.200 0.00252 97 80-120 Classical Chemistry Parameters - Quality Control Batch 2D2OO27 - NO PREP Blank (2D20027-BLK3) Prepared: 04/20/2022 15:40 Analyzed: 04/20/2022 17:06 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 0.017 U 0.10 mg/L LCS (2D20027-BSI) Prepared: 04/20/2022 15:40 Analyzed: 04/20/2022 17:26 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 0.94 0.10 mg/L 1.00 94 90-110 Matrix Spike (2D20027-MS3) Prepared: 04/20/2022 15:40 Analyzed: 04/20/2022 17:08 Source: CF05534-05 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 60 Of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 2D20027 - NO PREP - Continued Matrix Spike (2D20027-MS3) Continued Prepared: 04/20/2022 15:40 Analyzed: 04/20/2022 17:08 Source: CF05534-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 0.86 0.10 mg/L 1.00 0.017 U 86 90-110 QM-07 Matrix Spike (2D20027-MS2) Prepared: 04/20/2022 15:40 Analyzed: 04/20/2022 17:13 Source: CF04439-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 0.89 0.10 mg/L 1.00 0.017 U 89 90-110 QM-07 Matrix Spike Dup (2D20027-MSD1) Prepared: 04/20/2022 15:40 Analyzed: 04/20/2022 17:09 Source: CF05534-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 0.87 0.10 mg/L 1.00 0.017 U 87 90-110 1 10 QM-07 Batch 2D21014 - NO PREP Blank (2D21014-BLK1) Prepared: 04/21/2022 17:05 Analyzed: 04/21/2022 17:17 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 10 U 100 ug/L LCS (2D23014-BS1) Prepared: 04/21/2022 17:05 Analyzed: 04/21/2022 17:17 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 0.33 0.10 mg/L 0.401 83 80-120 Duplicate (2D23014-DUP3) Prepared: 04/21/2022 17:05 Analyzed: 04/21/2022 17:17 Source: CF05186-01 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 (2D23014-MS3) Prepared: 04/21/2022 17:05 Analyzed: 04/21/2022 17:17 Source: CF05186-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 10 1 100 ug/L 401 10 U 80-120 QM-07 Matrix Spike Dup (2D23014-MSD1) Prepared: 04/21/2022 17:05 Analyzed: 04/21/2022 17:17 Source: CF05186-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 12 ] 100 ug/L 401 10 U 3 80-120 25 QM-07 Batch 2D26012 - NO PREP Blank (2D26012-BLK3) Prepared: 04/26/2022 11:06 Analyzed: 04/26/2022 18:58 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 2.9 U 5.0 mg/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 61 Of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 2D26O12 - NO PREP - Continued LCS (2D26012-BSI) Prepared: 04/26/2022 11:06 Analyzed: 04/26/2022 19:12 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 48 5.0 mg/L 50.0 96 90-110 Matrix Spike (2D26012-MS3) Prepared: 04/26/2022 11:06 Analyzed: 04/26/2022 20:10 Source: CF00068-OIREI Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 83000 5000 ug/L 20000 270000 NR 90-110 QM-07 Sulfate as SO4 34 5.0 mg/L 20.0 79 NR 90-110 QM-07 Matrix Spike (2D26012-MS2) Prepared: 04/26/2022 11:06 Analyzed: 04/26/2022 20:54 Source: CF04817-OSRE3 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 88000 5000 ug/L 20000 1600000 NR 90-110 QM-07 Sulfate as SO4 19 5.0 mg/L 20.0 2.9 93 90-110 Matrix Spike Dup (2D26012-MSD1) Prepared: 04/26/2022 11:06 Analyzed: 04/26/2022 20:25 Source: CF00068-01RE3 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 88000 5000 ug/L 20000 270000 NR 90-110 5 10 QM-07 Sulfate as SO4 38 5.0 mg/L 20.0 79 NR 90-110 10 10 QM-07 Batch 2D27O12 - NO PREP Blank (2D27012-BLK3) Prepared: 04/27/2022 09:22 Analyzed: 04/27/2022 11:14 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 2.9 U 5.0 mg/L LCS (2D27012-BS1) Prepared: 04/27/2022 09:22 Analyzed: 04/27/2022 11:29 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 48000 5000 ug/L 50000 96 90-110 Sulfate as SO4 46 5.0 mg/L 50.0 92 90-110 Matrix Spike (2D27012-MS3) Prepared: 04/27/2022 09:22 Analyzed: 04/27/2022 11:58 Source: CF04092-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 54000 5000 ug/L 20000 33000 102 90-110 Sulfate as SO4 18 5.0 mg/L 20.0 2.9 U 91 90-110 Matrix Spike (2D27012-MS2) Prepared: 04/27/2022 09:22 Analyzed: 04/27/2022 12:41 Source: CF04092-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 51000 5000 ug/L 20000 34000 86 90-110 QM-07 Sulfate as SO4 18 5.0 mg/L 20.0 4.4 66 90-110 QM-07 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 62 Of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 2D27012 - NO PREP - Continued Matrix Spike Dup (2D27012-MSDS) Prepared: 04/27/2022 09:22 Analyzed: 04/27/2022 12:12 Source: CF04092-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 51000 5000 ug/L 20000 33000 91 90-110 4 10 Sulfate as SO4 16 5.0 mg/L 20.0 2.9 U 82 90-110 11 10 QM-07, QM-11 Batch 2D28015 - NO PREP Blank (2D28015-BLK3) Prepared: 04/28/2022 12:22 Analyzed: 04/28/2022 15:36 Spike Source %REC RPD Analvte Result Flaa Q Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14000 U 15000 ug/L LCS (2D28015-BS1) Prepared: 04/28/2022 12:22 Analyzed: 04/28/2022 15:36 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 100 15 mg/L 100 100 80-120 Matrix Spike (2D28015-MS3) Prepared: 04/28/2022 12:22 Analyzed: 04/28/2022 15:38 Source: CF05534-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 600000 D 75000 ug/L 189000 520000 42 80-120 QM-07 Matrix Spike Dup (21328015-MS131) Prepared: 04/28/2022 12:22 Analyzed: 04/28/2022 15:38 Source: CF05534-05 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 580000 D 75000 ug/L 189000 520000 29 80-120 4 25 QM-07 Batch 2D29011 - NO PREP Blank (2D29011-BLK3) Prepared: 04/29/2022 07:51 Analyzed: 04/29/2022 10:57 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 0.041 U 0.10 mg/L LCS (2D29011-BS1) Prepared: 04/29/2022 07:51 Analyzed: 04/29/2022 10:59 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 1.2 0.10 mg/L 1.25 100 90-110 Matrix Spike (2D29031-MS3) Prepared: 04/29/2022 07:51 Analyzed: 04/29/2022 11:03 Source: CF03159-02 Spike Source %REC RPD Analvte Result Flaa Q Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 6.0 D 0.50 mg/L 2.60 3.9 80 90-110 QM-07 Matrix Spike (2D29011-MS2) Prepared: 04/29/2022 07:51 Analyzed: 04/29/2022 11:08 Source: CF03159-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 8.4 D 0.50 mg/L 2.60 6.7 66 90-110 QM-07 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 63 of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 2D29011 - NO PREP - Continued Matrix Spike Dup (2D29011-MSDI) Prepared: 04/29/2022 07:51 Analyzed: 04/29/2022 11:04 Source: CF03159-02 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 5.9 D 0.50 mg/L 2.60 3.9 78 90-110 0.7 10 QM-07 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 2D26034 - EPA 5030B MS Blank (2D26034-BLK1) Prepared: 04/26/2022 00:00 Analyzed: 04/26/2022 11:19 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-& 4.7 u91L 5.00 94 75-125 LCS (2D26034-BSI) Prepared: 04/26/2022 00:00 Analyzed: 04/26/2022 10:27 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 95 80-133 Toluene-d8 4.9 u91L 5.00 98 75-125 Matrix Spike (2D26034-MS1) Prepared: 04/26/2022 00:00 Analyzed: 04/26/2022 18:11 Source: CF05186-02 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 23 2.0 ug/L 25.0 2.3 84 80-133 Toluene-d8 4.9 u91L 5.00 99 75-125 Matrix Spike Dup (2D26034-MSD1) Prepared: 04/26/2022 00:00 Analyzed: 04/26/2022 18:37 Source: CF05186-02 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 2.3 85 80-133 1 19 Toluene-d8 5.1 u91L 5.00 102 75-125 Batch 2D27041 - EPA 5030E MS Blank (2D27041-BLK3) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 12:57 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 4.8 u91L 5.00 96 75-125 LCS (2D27041-BS1) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 12:32 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 96 80-133 Toluene-d8 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 64 Of 74 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 2D27041 - EPA 5030B MS - Continued Matrix Spike (2D27041-MS3) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 21:16 Source: AF03317-01 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 5.0 u91L 5.00 99 75-125 Matrix Spike Dup (2D27041-MSD1) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 21:41 Source: AF03317-01 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 94 80-133 1 19 Toluene-d8 4.8 u91L 5.00 96 75-125 Dissolved Gases by GC - Quality Control Batch 2D27008 - Same Blank (2D27008-BLK3) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 08:57 Spike Source %REC RPD Analvte Result Flaa Q Units Level Result %REC Limits RPD Limit Notes Ethane 0.00510 U 0.00600 mg/L Ethene 0.00510 U 0.00600 mg/L Methane 0.00400 U 0.00500 mg/L LCS (2D27008-BSI) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 08:26 Spike Source %REC RPD Anala Result Flaa Q Units Level Result %REC Limits RPD Limit Notes Ethane 0.351 0.00600 mg/L 0.323 109 70-130 Ethene 0.345 0.00600 mg/L 0.302 114 70-130 Methane 0.185 0.00500 mg/L 0.174 106 70-130 LCS Dup (2D27008-BSD1) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 08:41 Spike Source %REC RPD Analvte Result Flaa Q Units Level Result %REC Limits RPD Limit Notes Ethane 0.350 0.00600 mg/L 0.323 108 70-130 0.5 30 Ethene 0.346 0.00600 mg/L 0.302 114 70-130 0.3 30 Methane 0.185 0.00500 mg/L 0.174 107 70-130 0.4 30 Duplicate (2D27008-DUP1) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 09:29 Source: AF03219-04REI Spike Source %REC RPD Analvte Result Flaa Q Units Level Result %REC Limits RPD Limit Notes Ethane 0.416 JD 0.420 mg/L 0.381 9 30 Ethene 0.357 UD 0.420 mg/L 0.357 U 30 Methane 5.69 D 0.350 mg/L 4.80 17 30 Volatile Fatty Acids by HPLC - Quality Control Batch 2EO4036 - NA Blank (2E04036-BLK3) Prepared: 05/04/2022 13:30 Analyzed: 05/04/2022 14:47 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 65 Of %4 0Nk"q09 www.encolabs.com QUALITY CONTROL DATA Volatile Fatty Acids by HPLC - Quality Control Batch 2EO4036 - NA - Continued Blank (2E04036-BLKI) Continued Prepared: 05/04/2022 13:30 Analyzed: 05/04/2022 14:47 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Acetic Acid 0.18 U 0.20 mg/L Butyric Acid 0.089 U 0.10 mg/L Hexanoic Acid 0.26 U 0.50 mg/L iso-Hexanoic Acid 0.44 U 0.50 mg/L iso-Pentanoic Acid 0.18 U 0.20 mg/L Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 0.13 U 0.14 mg/L Pentanoic Acid 0.14 U 0.20 mg/L Propionic Acid 0.065 U 0.10 mg/L Pyruvic Acid 0.021 U 0.070 mg/L Tiimethylacetic acid 21 m9/L 20.0 104 50-150 LCS (2E04036-BS1) Prepared: 05/04/2022 13:30 Analyzed: 05/04/2022 15:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD ihnA Notes Acetic Acid 24 0.20 mg/L 20.0 121 60-123 Butyric Acid 20 0.10 mg/L 20.0 98 54-133 Hexanoic Acid 21 0.50 mg/L 20.0 107 62-146 iso-Hexanoic Acid 22 0.50 mg/L 20.0 112 36-168 iso-Pentanoic Acid 21 0.20 mg/L 20.0 106 59-138 Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 35 0.14 mg/L 40.0 87 73-131 Pentanoic Acid 23 0.20 mg/L 20.0 116 63-131 Propionic Acid 22 0.10 mg/L 20.0 109 74-121 Pyruvic Acid 21 0.070 mg/L 20.0 103 44-137 Tiimethylacetic acid 19 m9/L 20.0 95 50-150 LCS Dup (2E04036-BSD3) Prepared: 05/04/2022 13:30 Analyzed: 05/04/2022 16:13 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Acetic Acid 19 0.20 mg/L 20.0 95 60-123 24 25 Butyric Acid 20 0.10 mg/L 20.0 98 54-133 0.1 25 Hexanoic Acid 20 0.50 mg/L 20.0 98 62-146 9 25 iso-Hexanoic Acid 23 0.50 mg/L 20.0 113 36-168 0.7 25 iso-Pentanoic Acid 22 0.20 mg/L 20.0 108 59-138 2 25 Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 36 0.14 mg/L 40.0 89 73-131 3 25 Pentanoic Acid 23 0.20 mg/L 20.0 116 63-131 0.3 25 Propionic Acid 21 0.10 mg/L 20.0 106 74-121 2 25 Pyruvic Acid 21 0.070 mg/L 20.0 106 44-137 4 25 Tiimethylacetic acid 19 m9/L 20.0 97 50-150 Classical Chemistry Parameters - Quality Control Batch 2D25008 - NO PREP Blank (2D25008-BLK1) Prepared: 04/25/2022 07:25 Analyzed: 04/25/2022 09:18 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 0.90 U 1.0 mg/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 66 Of 74 QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 2D2500B - NO PREP - Continued (� �Eo www.encolabs.com LCS (21325008-113SI) Prepared: 04/25/2022 07:25 Analyzed: 04/25/2022 09:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 49 1.0 mg/L 50.0 98 85-115 Matrix Spike (2D25008-MS3) Prepared: 04/25/2022 07:25 Analyzed: 04/25/2022 18:45 Source: AF02578-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 45 1.0 mg/L 50.0 3.6 82 85-115 QM-07 Matrix Spike (2D25008-MS2) Prepared: 04/25/2022 07:25 Analyzed: 04/25/2022 10:16 Source: AF02821-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 50 1.0 mg/L 50.0 3.7 92 85-115 Matrix Spike Dup (2D25008-MSDS) Prepared: 04/25/2022 07:25 Analyzed: 04/25/2022 19:07 Source: AF02578-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 43 1.0 mg/L 50.0 3.6 78 85-115 4 15 QM-07 Matrix Spike Dup (21325008-MS132) Prepared: 04/25/2022 07:25 Analyzed: 04/25/2022 10:38 Source: AF02821-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 49 1.0 mg/L 50.0 3.7 92 85-115 0.9 15 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 67 Of 74 (� �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. QB-01 The method blank had a positive result for the analyte; however, the concentration in the method blank is less than 10% of the sample result. There is minimal impact to the data. QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. 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 68 of 74 E .. Q U cn w cc O a GC�c�N a N J 2 rNi LT z _ O m m f" L i >MM a w N z o An z w ❑ X z N 0 cc d m ; m lit o 0 �n 9 }� � a w L ' — T— E y y A o� Lo m o U r' o m x C �� ?a n W L Q �yi ¢m ass o E m ssi z so MMS 001 x 0 S-009VVyS apt jInS x x z 00£ ajejjnS x x m N o LOISa x -7T x U i Z £G£ XON x x call cc yd / SQ!`O V 4P-A X x D �m � T c Z'ESS WJ9l?PON'00E9VAg3'Z'OL£Amum"ry x C O X o LGZA'ii'es x x x x x x x x X x x x arms OOGZ9,PapuwPG o0848'L npueddw ❑Dges x x x x x x x x x x x v _ 76 w ti ti ti ti ti ti 00 /� /� (% Li tii �% V �% �/ �✓ ifE LL L ND U0 Q C V a d a IV N co CQ� O 0 < e m 13 Z 6477 D a L r [JJ �y �"� yam` yam- d v m a ^1 \L M 1'J ,y� VI , M co _ u7 �n m rn N CO 0 Cm CD� n!i O C; cri ° chi _ c l C+7 w �j m _0 tE v E E � � ae E v a V �cPi � c`9n d IM O � _ Clri N 0 m O FCL`E v Cn d E d 91 U a n ¢ U n V Q. 0 4 a U 3 mom m m lc�:) m S CC S O N E � N E E a ¢ 0 m � a E r � C S J ¢ C _ v O U Z O i � v OJ G � r [L m C o y `0 a d � t Y (n � [ E U Page 69 of 7 N W_ Q 0 a m O z O a cc w U) z O U i` Z W Z O Q Z W 0 wl Ar 1Qkp 2 N' v ro N m CD E 2 N !- X b E E O c-b E p y a YrU.� z ❑ i N _N i� 4 CL Q1 N N L E C 9 GOLURS ool x o U 6 Z, C 1 CI S-009VAV apilInS x x y 4 3 o C E 00£ alejlnS x x � � o Z m o 3 m 9L DISH o x x a 'M C-XON U xEr v �' [Y y4 SP!OV 4eA o X x t rn q = r F x x N 9e Enua!N'OOS-P!JOW3'i-OLE 4uilv4FV a m C U E l E m E qr 0 x X x X xo r a 2 � � F a OI Wi6 QO6ZB'PaPu�3 ❑09Z8`. x!Pueddy ooBZo x X x x X X v r C CE q U Cc)1ti E9 8 E 6 U 8 ❑. (13 t/y m m b t � V P o u � ry � LL J m CC a m 3 `m LD J N �!i o U J m O �� h+�\ I t w W Z Z U ¢ x cc a` a a s co En .� I N � n Em o 3 1= o z N �i [0 V co C O LL co) co N - m 4 k- 7 E41 (Qcl 0 c U] p() E c O Q O Ci O Q m E roa �. ca Z ti y N t b •r �r r v r 4 .� a C7 3 a `� E E E E E E Page 70 of 74 U 4 U H U7 N N rn U .. Sample Preservation Verification ;g ENCO Cary V Work Order: CF05186 Project: White Street LF-Phase II- Spring Client: Golder Associates, Inc. (00007) Project#: 19131339.105 Logged In: 20-Apr-22 14 12 Logged By: Rachel An ornjsh Preservation Check Performed By: Ob DatelTime: CF05186-01 Cont Type Pres (pH) pH Checked 1 Requirement In Control pH Adjusted DateMme Adjusted Reagent Used/Comments B 250mLP+H2SO4 <2 I N I NA Y 1 NA C 250mLP+FIN03 <2 Y N I NA Y I N I NA D 250mLP+ZnAc+NaOH 19 Y I N I NA Y N NA CF05186-02 Cant Type Pres (pH) pH Checked 1 pH Adjusted Date/Time Reagent Used/Comments Requirement In Control Adjusted A 250mLP+HNO3 <2 "Y� N I NA Y N NA CF05186-03 Cont Type Pres (pH) pH Checked 1 pH Adjusted Date/Time Reagent Used/Comments Requirement In Control Adjusted A 250mLP+HNO3 <2 Y N I NA Y N I NA CF05186-04 Cont Type Pres (pH) pH Checked 1 pH Adjusted Date/Time Reagent Used/Comments Requirement In Control Adjusted A 250mLP+HNO3 <2 ('Y 'Y N/ NA Y i& I NA a CF06186-05 Cont Type Pres (pH) pH Checked 1 I pH Adjusted DatefTime Reagent Used/Comments Requirement In Control Adjusted A 250mLP+HNO3 '2 Y I N/ NA Y N NA CF05186-06 Cant Type Pres (pH) I Requirement pH Checked 1 In Control pH Adjusted Date/Time Adjusted Reagent UsedlComments A 250mLP+HNO3 [F] <? Y N I NA Y N NA CF05186-07 Cont Type Pres (pH) pH Checked/ pH Adjusted DatelTime Reagent Used/Comments Requirement In Control Adjusted A 250mLP+HNO3 <2 Y N I NA Y N I NA CF05186-08 Cant Type Pres (pH) pH Checked / pH Adjusted DateMime Reagent Used/Comments Requirement. In Control Adjusted A 250mLP+HNO3 <2 Y)'/ N/ NA Y N NA ClelmntlPrintlwko_Preservation Check, rpt I Page 71 of 74 Sample Preservation Verification' ENCO Cary Work Order: CF05186 Project White Street LF-Phase II- Spring Client. Golder Associates, Inc. (GO007) Project#: 19131339,105 Logged In: 20-Apr-22 14:12 Logged By: Rachel Ann onis Preservation Check Performed By: Date/Time: ` CF05186-09 Cont Type Pres (pH) Requirement pH Checked/ In Control pH Adjusted Date[Time Adjusted Reagent Used/Comments -` B 250mLP+H2SO4 <2 Y/ N/ NA Y I NA C 250mLP+HNO3 <2 Y I N I NA Y I NA D 256mLP+ZnAc4NaOH I >9 Y N/ NA Y I N I NA CF05186-10 Cont Type Pres (pH) Requirement pH Checked / In Control pH Adjusted DatelTime Adjusted Reagent UsedlComments B 250mLP+H2SO4 <2 Y/ N/ NA Y N NA _ C 250mLP+HNO3 <2 Y/ N I NA Y N/ NA D 250mLP+ZnAc+NaOH >9 Y I N / NA YIN NA CF05186-11 Cont Type Pres (pH) Requirement pH Checked / In Control pH Adjusted DatelTime Adjusted Reagent UsedlComments A 250mLP+HNO3 <2 Y/ N/ NA Y N NA CF05186-12 Gent Type Pres (pH) Requirement pH Checked/ In Control pH Adjusted DatelTime Adjusted Reagent Used/Comments B 250ml-P+H2SO4 <2 Y I N/ NA Y N NA C 250mLP+HNO3 <2 Y I N/ NA Y N NA D 250mLPiZnAc+NaOH >9 Y 1 N / NA YIN / NA CF05186-13 Cont Type Pres (pH) pH Checked / pFl Adjusted DatefTime Reagent Used/Comments Requirement Control Adjusted A 250mLP+HNO3 <2 / N / NA Y / N NA Reaclent Name ID 1 2 pH Strip ID: PH Strips C2A0640 Rea ent Name ID 3 4 Rea ent Name 1 D 5 6 C 1elmntlPrir.,,... —i io,':�IvdLwn-neck.rpt Page 72 of 74 la 0 V N m V 3 3 0 Ir 0 U w Q 0 W C] LL 0 z a r U U M m 0 a oc 0 In Z 0 a cr w cn Z 0 U J Z W Z 0 Z W 0 U c m rn M o N ti E 2 _0 cD I� Q Q E o N CID m H L c fn uJ U m E f^v` r _ E /� E 1p E Z iD N a -j u E ¢ N U Z � m a 8 U a L N 3 0= om O 11 � O c � ° 11419 �.� o v Z'CSS r,n'41AIN eGL � 1L+t1�Ilrj o U o E ti k rj E E 0 m S. V1�)fv P p al Wl Qpg # �9 x' o a `a �p om "� sE vl N x L m 13 N 0 a U Q � a_ c-�, ui o m = o a U Q m t c Z Z_ Ei c (j e°p 2S m E .a Q c T. s U a E a 0 a O a $� m m U P y m n N Yc V t rQ E € m W � 1 � s c � C cam .+ 9 a y a - V3' ° f`� N ma E A c E U7 P. m 4J 6 E i� Q •y. H n le chi E Page 73 of 74 E Sample Preservation Verification ENCO Cary Work Order: CF05681 Client: Golder Associates, Inc. (GO007) ENCQ Project: White Street LF-Phase II- Spring Project #: 19131339.105 Lagged In: 22-Apr-22 13:20 Logged By: Samantha L Hyatt Preservation Check Performed By: Cb Date/Time: Z21ZL k! -2)Q CF05681-01 Cont yp Type Pres (pH) Requirement pH Checked / ,.-11i7 Control Date/Time pH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y / N / NA Y itN `/ NA CF05681-02 Cant Type Pres (pH) Requirement pH Checked 1 -, In Control Date/TimeYp pH Adjusted Adjusted Reagent Used/Comments A 250ml-P+HNO3 <2 Y 7 N/ NA Y,`I N E NA C F05681-03 Cont Type Pres (pH) Requirement pH Checked ! <-k7 Control Date(Time PH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y N/ NA Y /( N h NA C F05681-04 Cant yp Type Pres (pH) Requirement pH Checked/ -.I,n Control Datefrime pH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 YJ N/ NA Y( N j NA CF05681-05 Cont Type Pres (pH) Requirement pH Checked / ---In Control pH Adjusted Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y I N I NA Y kN ljNA Rea ent Name ID 1 2 pH Strip ID. Rea ent Name ID 3 4 Rea ent Name ID 6 C:IELMNTIPrintlwko_Preservation Check. rpt I Page 74 of 74 WORK ORDER Printed: 4/25/2022 9:18:36AM CF05681 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase II- Spring Project Number: 19131339.105 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: David E. Wilder Date Received: 22-Apr-22 12:30 Logged In By: Samantha L Hyatt Date Logged In: 22-Apr-22 13:20 Work Order Comments: C-2200 received at 1.0°C Containers Intact Y Custody Seals Intact Y Temperature Corrected Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Default Cooler Containers Intact N Containers Properly Preserved N Proper Containers Received N All Samples in PreLog Received N COC/Labels Agree N Custody Seals Intact N Volatile Containers Preserved N Volatile Containers Headspace Free N Aqueous Samples Checked for Residual Cl N Received On Ice N Temperature Corrected N Page 1 of 1 WORK ORDER Printed: 4/25/2022 9:02:29AM CF05186 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase II- Spring Project Number: 19131339.105 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: David E. Wilder Date Received: 20-Apr-22 13:15 Logged In By: Rachel Ann Yonish Date Logged In: 20-Apr-22 14:12 Work Order Comments: C-2200 received at 1.0°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 Default Cooler Containers Intact N Containers Properly Preserved N Proper Containers Received N All Samples in PreLog Received N COC/Labels Agree N Custody Seals Intact N Volatile Containers Preserved N Volatile Containers Headspace Free N Aqueous Samples Checked for Residual Cl N Received On Ice N Temoeratme Corrected N Reviewed By Date Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 4 Project Name: White Street Landfill — Phase II Project Reference Number: 19131339.105 Sampling Event Date: April 19 — 21, 2022 Review Date: May 30, 2022 Report #: CF05186, CF05681 %X%I) GOLDER Initials: DC QA/QC: , -/ I --Z -I- 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 + 1,4-D, Tetrahydrofuran, and MNA Parameters (not all wells) NC Appendix I + Detects NC Appendix II NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW DC COC was properly signed by all parties. DC Correct project name and number are on the form. 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 Page 2 of 4 %X%I) GOLDER 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 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 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. 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). ➢ The 8260D Continuing Calibration Verification (CCV) exhibited a high bias for Acrylonitrile, Bromomethane, and Vinyl acetate; however, these analytes were not detected in the associated samples. The Method Blank (MB) had a positive result for Chloride; however the concentration is less than ten percent of the associated sample result, which has minimal impact on the data. The spike recoveries for Alkalinity, Chloride, Nitrite, Nitrate/Nitrite, Sulfate, Sulfide, and TOC were outside control limits for the MS and/or MSD samples, the precision between duplicate spikes of Sulfate exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these analytes. 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. 5.0 DATA REPORTING DC All analytical reporting associated with the event was performed by the contracted lab. 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, GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL %%ti I) G O L D E R LABORATORY DATA REVIEW Page 3 of 4 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 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: 2x All Locations ➢ 1,4-Dioxane: 5x @ II-1, II-8 Total Alkalinity: 10x @ II-1; 5x @ SMW-3, II-9 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 field/equipment/trip blanks or above applicable Surface Water Standards for surface water point. Cobalt (NC 2L = 1 ug/L) • II-1 @ 24.7 ug/L • II-3 @ 5.72 ug/L (J) • II-313 @ 3.08 ug/L • II4A @ 1.45 ug/L (J) • II-5 @ 2.93 ug/L (J) • II-8 @ 7.08 ug/L (J) • II-9 @ 1.43 ug/L (J) • SMW-1 @ 2.90 ug/L (J) • SMW-3 @ 2.11 ug/L (J) Nickel (NC 2L = 100 ug/L) • II-8 @ 128 ug/L Cadmium (NC 2L = 2 ug/L) • SMW-1 @ 9.55 ug/L 1,4-Dichlorobenzene (NC2L = 6 ug/L) • II-1 @ 9.2 ug/L 1.4-Dioxane (NC 2L = 3.0 ua/L) • II-1 @ 150 ug/L • II-313 @ 3.4 ug/L • II4A @ 45 ug/L • II-6 @ 3.2 ug/L • II-8 @ 340 ug/L 0 SMW-4 @ 5.5 ug/L GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL 1\ ti () G O L D E R LABORATORY DATA REVIEW Page 4 of 4 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). DC Other report issues/Communications with laboratory/etc.: v Samples 4103-111, 4103-MW14, 4103-SMW3, and 4103-119 for the analysis of TOC may have been stored in a temperature controlled cooler that temporarily exceeded the maximum allowable temperature of 6°C. The laboratory does not suspect any impact on data quality. If any additional information is required, please contact the laboratory. ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Tuesday, May 3, 2022 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.105, Project Name/Desc: White Street LF-Phase I,II,III SW ENCO Workorder(s): CF05185 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, April 22, 2022. 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, Amanda L. Gaines 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 24 PROJECT NARRATIVE Date: May 3, 2022 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11,111 SW Lab ID: CF05185 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 The 8260D Continuing Calibration Verification (CCV) exhibited a high bias for 4-Methyl-2-pentanone, Acrylonitrile, Bromomethane, Chloroethane, and Vinyl acetate; however, these analytes were not detected in the associated samples. Quality Control Remarks No Comments Other Comments All samples received under this work order arrived in acceptable conditions. The samples were not checked for chlorine, as it is not required. 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. Amanda Gaines 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 24 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303/12-SW3 Lab ID: CF05185-01 Sampled: 04/21/22 13:15 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/22 04/26/22 08:14 04/29/22 11:24 EPA 6020E EPA 3005A 10/18/22 04/26/22 03:53 04/27/22 13:40 EPA 8260D EPA 503013_MS 05/05/22 04/28/22 11:32 04/28/22 14:53 EPA 8260D EPA 503013_MS 05/05/22 04/28/22 13:28 04/28/22 19:09 Client ID: 4303/12-SW2 Lab ID: CF05185-02 Sampled: 04/21/22 11:41 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/22 04/26/22 08:14 04/29/22 11:26 EPA 6020E EPA 3005A 10/18/22 04/26/22 03:53 04/27/22 13:44 EPA 8260D EPA 503013_MS O5/05/22 04/28/22 11:32 04/28/22 15:18 EPA 8260D EPA 503013_MS 05/05/22 04/28/22 13:28 04/28/22 19:36 Client ID: 4303/12-SW3 Lab ID: CF05185-03 Sampled: 04/21/22 12:05 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/22 04/26/22 08:14 04/29/22 11:29 EPA 6020B EPA 3005A 10/18/22 04/26/22 03:53 04/27/22 13:48 EPA 8260D EPA 503013_MS 05/05/22 04/27/22 13:06 04/28/22 01:25 EPA 8260D EPA 5030B_MS 05/05/22 04/28/22 11:32 04/28/22 15:44 Client ID: 4303/12-SW4 Lab ID: CF05185-04 Sampled: 04/21/22 12:45 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/22 04/26/22 08:14 04/29/22 11:31 EPA 6020B EPA 3005A 10/18/22 04/26/22 03:53 04/27/22 13:52 EPA 8260D EPA 503013_MS 05/05/22 04/27/22 13:06 04/28/22 01:53 EPA 8260D EPA 503013_MS 05/05/22 04/28/22 11:32 04/28/22 16:10 Client ID: 4303/12-Trip Blank Lab ID: CF05185-05 Sampled: 04/21/22 11:41 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/05/22 04/27/22 13:06 04/27/22 21:45 EPA 8260D EPA 503013_MS 05/05/22 04/28/22 11:32 04/28/22 16:35 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 24 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303/12-SW3 Lab ID: CF05185-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 42.7 1.10 10.0 ug/L EPA 6010D Chromium - Total 2.03 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 6.67 J 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW2 Lab ID: CF05185-02 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.7 J 0.80 2.0 ug/L EPA 8260D Barium - Total 51.1 1.10 10.0 ug/L EPA 6010D Zinc - Total 6.19 J 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW3 Lab ID: CF05185-03 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 41.4 1.10 10.0 ug/L EPA 6010D Chromium - Total 1.80 1 1.40 10.0 ug/L EPA 6010D Zinc - Total 7.15 1 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW4 Lab ID: CF05185-04 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 45.5 1.10 10.0 ug/L EPA 6010D Zinc - Total 14.6 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 24 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW1 Lab Sample ID:CF05185-01 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 13:15 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Cc> Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS 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 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Acetone [67-64-1]A 10 U ug/L 1 10 20 2D28019 EPA 8260D 04/28/22 19:09 RKY Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 2D28019 EPA 8260D 04/28/22 19:09 RKY Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Chlorobenzene[108-90-7]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Xylenes (Total) [1330-20-7]A 0.45 U ug/L 1 0.45 3.0 2D28019 EPA 8260D 04/28/22 19:09 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW1 Lab Sample ID:CF05185-01 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 13:15 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Co) 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 91 % 53-136 2D28019 EPA 6260D 04126122 19:09 RKY Dibromofluoromethane 56 1 50.0 112 % 67-129 2D28019 EPA 6260D 0412812219:09 RKY Toluene-d8 59 1 50.0 117 % 59-134 2D28019 EPA 6260D 0412812219:09 RKY 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]^ 0.740 U ug/L 2 0.740 2.00 2D26003 EPA 6020B 04/27/22 13:40 JDH Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Barium [7440-39-3]^ 42.7 ug/L 1 1.10 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26005 EPA 6010D 04/29/22 11:24 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26005 EPA 6010D 04/29/22 11:24 JDH Chromium [7440-47-3]^ 2.03 J ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Cobalt [7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26003 EPA 6020B 04/27/22 13:40 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Zinc[7440-66-6]^ 6.67 J ug/L 1 4.40 10.0 2D26005 EPA 6010D 04/29/22 11:24 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 2D28027 EPA 8260D 04/28/22 14:53 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.6 1 5.00 93 % 75-125 2D28027 EPA 8260D 0412812214:53 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 24 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW2 Lab Sample ID:CF05185-02 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 11:41 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Cc> Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS 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 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Acetone [67-64-1]A 10 U ug/L 1 10 20 2D28019 EPA 8260D 04/28/22 19:36 RKY Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 2D28019 EPA 8260D 04/28/22 19:36 RKY Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Chlorobenzene[108-90-7]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Xylenes (Total) [1330-20-7]A 0.45 U ug/L 1 0.45 3.0 2D28019 EPA 8260D 04/28/22 19:36 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW2 Lab Sample ID:CF05185-02 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 11:41 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Co) 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 47 1 50.0 95 % 53-136 2D28019 EPA 6260D 0412612219:36 RKY Dibromofluoromethane 59 1 50.0 118 % 67-129 2D28019 EPA 6260D 0412812219:36 RKY Toluene-d8 58 1 50.0 115 % 59-134 2D28019 EPA 6260D 041281221936 RKY 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]^ 0.740 U ug/L 2 0.740 2.00 2D26003 EPA 6020B 04/27/22 13:44 JDH Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Barium [7440-39-3]^ 51.1 ug/L 1 1.10 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26005 EPA 6010D 04/29/22 11:26 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26005 EPA 6010D 04/29/22 11:26 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Cobalt [7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26003 EPA 6020B 04/27/22 13:44 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Zinc[7440-66-6]^ 6.19 J ug/L 1 4.40 10.0 2D26005 EPA 6010D 04/29/22 11:26 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]^ 1.7 J ug/L 1 0.80 2.0 2D28027 EPA 8260D 04/28/22 15:18 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.8 1 5.00 96 % 75-125 2D28027 EPA 8260D 0412812215:18 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 24 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW3 Lab Sample ID:CF05185-03 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 12:05 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Cc> Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte FCAS 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 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 2D27027 EPA 8260D 04/28/22 01:25 RKY QV-01 Acetone [67-64-1]A 10 u ug/L 1 10 20 2D27027 EPA 8260D 04/28/22 01:25 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 2D27027 EPA 8260D 04/28/22 01:25 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY QV-01 Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Styrene[100-42-5]A 0.11 U ug/L 1 0.11 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 2D27027 EPA 8260D 04/28/22 01:25 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 2D27027 EPA 8260D 04/28/22 01:25 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW3 Lab Sample ID:CF05185-03 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 12:05 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Co) 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 52 1 50.0 105 % 53-136 2D27027 EPA 8260D 04126122 01:25 RKY Dibromofluoromethane 54 1 50.0 109 % 67-129 2D27027 EPA 8260D 04128122 01:25 RKY Toluene-d8 57 1 50.0 114 % 59-134 2D27027 EPA 6260D 04128122 01:25 RKY 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]^ 0.740 U ug/L 2 0.740 2.00 2D26003 EPA 6020B 04/27/22 13:48 JDH Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Barium [7440-39-3]^ 41.4 ug/L 1 1.10 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26005 EPA 6010D 04/29/22 11:29 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26005 EPA 6010D 04/29/22 11:29 JDH Chromium [7440-47-3]^ 1.80 J ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Cobalt [7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26003 EPA 6020B 04/27/22 13:48 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Zinc[7440-66-6]^ 7.15 J ug/L 1 4.40 10.0 2D26005 EPA 6010D 04/29/22 11:29 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 2D28027 EPA 8260D 04/28/22 15:44 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.5 1 5.00 91 % 75-125 2D28027 EPA 8260D 0412812215:44 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 24 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW4 Lab Sample ID:CF05185-04 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 12:45 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Cc> Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS 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 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 2D27027 EPA 8260D 04/28/22 01:53 RKY QV-01 Acetone [67-64-1]A 10 u ug/L 1 10 20 2D27027 EPA 8260D 04/28/22 01:53 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 2D27027 EPA 8260D 04/28/22 01:53 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY QV-01 Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Styrene[100-42-5]A 0.11 U ug/L 1 0.11 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 2D27027 EPA 8260D 04/28/22 01:53 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 2D27027 EPA 8260D 04/28/22 01:53 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW4 Lab Sample ID:CF05185-04 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 12:45 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Co) 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 97 % 53-136 2D27027 EPA 6260D 04126122 01:53 RKY Dibromofluoromethane 55 1 50.0 110 % 67-129 2D27027 EPA 6260D 04128122 01:53 RKY Toluene-d8 55 1 50.0 110 % 59-134 2D27027 EPA 6260D 04128122 01:53 RKY 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]^ 0.740 U ug/L 2 0.740 2.00 2D26003 EPA 6020B 04/27/22 13:52 JDH Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Barium [7440-39-3]^ 45.5 ug/L 1 1.10 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26005 EPA 6010D 04/29/22 11:31 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26005 EPA 6010D 04/29/22 11:31 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Cobalt [7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26003 EPA 6020B 04/27/22 13:52 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Zinc[7440-66-6]^ 14.6 ug/L 1 4.40 10.0 2D26005 EPA 6010D 04/29/22 11:31 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 2D28027 EPA 8260D 04/28/22 16:10 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.1 1 5.00 101 % 75-125 2D28027 EPA 8260D 0412812216:10 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 24 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-Trip Blank Lab Sample ID:CF05185-05 Received: 04/22/22 12:30 Matrix: Water Sampled:04/21/22 11:41 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By: ENCO 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]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 2D27027 EPA 8260D 04/27/22 21:45 RKY QV-01 Acetone [67-64-1]A 10 u ug/L 1 10 20 2D27027 EPA 8260D 04/27/22 21:45 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 2D27027 EPA 8260D 04/27/22 21:45 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY QV-01 Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Styrene[100-42-5]A 0.11 Ll ug/L 1 0.11 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 2D27027 EPA 8260D 04/27/22 21:45 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 2D27027 EPA 8260D 04/27/22 21:45 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-Trip Blank Lab Sample ID:CF05185-05 Received: 04/22/22 12:30 Matrix: Water Sampled:04/21/22 11:41 Work Order: CF05185 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 49 1 50.0 98 % 53-136 2D27027 EPA 6260D 04127122 21:45 RKY Dibromofluoromethane 53 1 50.0 105 % 67-129 2D27027 EPA 6260D 04127122 21:45 RKY Toluene-d8 58 1 50.0 117 % 59-134 2D27027 EPA 6260D 04127122 21:45 RKY 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 2D28027 EPA 8260D 04/28/22 16:35 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffly Notes Toluene-d8 5.2 1 5.00 105 % 75-125 2D28027 EPA 8260D 041281221625 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 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D27027 - EPA 5030B MS Blank (2D27027-BLK1) Prepared: 04/27/2022 13:06 Analyzed: 04/27/2022 21:17 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 97 53-136 Dibromofluoromethane 54 u9/L 50.0 107 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 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D27027 - EPA 5030B MS - Continued Blank (2D27027-BLK1) Continued Prepared: 04/27/2022 13:06 Analyzed: 04/27/2022 21:17 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 55 u91L 50.0 111 59-134 LCS (2D27027-BS1) Prepared: 04/27/2022 13:06 Analyzed: 04/27/2022 19:26 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 107 75-133 Benzene 21 1.0 ug/L 20.0 105 80-134 Chlorobenzene 19 1.0 ug/L 20.0 97 80-120 Toluene 20 1.0 ug/L 20.0 98 71-120 Trichloroethene 20 1.0 ug/L 20.0 100 74-120 Matrix Spike (2D27027-MS1) Prepared: 04/27/2022 13:06 Analyzed: 04/27/2022 19:54 Source: CF05678-10 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 107 75-133 Benzene 22 1.0 ug/L 20.0 0.15 U 110 80-134 Chlorobenzene 21 1.0 ug/L 20.0 0.17 U 107 80-120 Toluene 21 1.0 ug/L 20.0 0.14 U 107 71-120 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 106 74-120 Matrix Spike Dup (2D27027-MSD1) Prepared: 04/27/2022 13:06 Analyzed: 04/27/2022 20:22 Source: CF05678-10 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 102 75-133 4 20 Benzene 20 1.0 ug/L 20.0 0.15 U 101 80-134 8 17 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 99 80-120 8 16 Toluene 20 1.0 ug/L 20.0 0.14 U 98 71-120 8 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 103 74-120 3 22 Batch 2D28019 - EPA 5030B MS Blank (2D28019-BLK3) Prepared: 04/28/2022 13:28 Analyzed: 04/28/2022 17:16 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 16 Of 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D28019 - EPA 5030B MS - Continued Blank (2D28019-BLK1) Continued Prepared: 04/28/2022 13:28 Analyzed: 04/28/2022 17:16 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 46 ug/L 50.0 92 53-136 Dibromofluoromethane 51 u91L 50.0 102 67-129 Toluene-d8 55 u91L 50.0 111 59-134 LCS (2D28019-BSI) Prepared: 04/28/2022 13:28 Analyzed: 04/28/2022 15:24 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 84 75-133 Benzene 19 1.0 ug/L 20.0 93 80-134 Chlorobenzene 20 1.0 ug/L 20.0 99 80-120 Toluene 18 1.0 ug/L 20.0 90 71-120 Trichloroethene 18 1.0 ug/L 20.0 88 74-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 17 Of 24 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D28019 - EPA 5030B MS - Continued (� �Eo www.encolabs.com Matrix Spike (2D28019-MS1) Prepared: 04/28/2022 13:28 Analyzed: 04/28/2022 15:52 Source: CF05678-11 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 91 75-133 Benzene 20 1.0 ug/L 20.0 0.15 U 98 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 97 80-120 Toluene 18 1.0 ug/L 20.0 0.14 U 91 71-120 Trichloroethene 18 1.0 ug/L 20.0 0.15 U 88 74-120 Matrix Spike Dup (21328019-MS131) Prepared: 04/28/2022 13:28 Analyzed: 04/28/2022 16:20 Source: CF05678-11 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 83 75-133 10 20 Benzene 19 1.0 ug/L 20.0 0.15 U 95 80-134 3 17 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 95 80-120 3 16 Toluene 18 1.0 ug/L 20.0 0.14 U 90 71-120 0.9 17 Trichloroethene 16 1.0 ug/L 20.0 0.15 U 80 74-120 10 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26003 - EPA 3005A Blank (2D26003-BLK1) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 12:56 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (2D26003-BSI) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 13:00 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 20.7 1.00 ug/L 20.0 103 80-120 Thallium 20.7 1.00 ug/L 20.0 103 80-120 Matrix Spike (2D26003-MS3) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 13:09 Source: CF05187-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.2 2.00 ug/L 40.0 0.740 U 106 75-125 Thallium 41.4 2.00 ug/L 40.0 0.220 U 103 75-125 Matrix Spike Dup (2D26003-MSD1) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 13:22 Source: CF05187-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 41.6 2.00 ug/L 40.0 0.740 U 104 75-125 2 20 Thallium 40.4 2.00 ug/L 40.0 0.220 U 101 75-125 2 20 Post Spike (21326003-PSI) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 13:27 Source: CF05187-04 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 0.0394 109 75-125 Thallium 20.9 1.00 ug/L 20.0 0.0213 104 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 18 Of 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26005 - EPA 3005A Blank (2D26005-BLK3) Prepared: 04/26/2022 08:14 Analyzed: 04/29/2022 10:42 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 (21326005-BSI) Prepared: 04/26/2022 08:14 Analyzed: 04/29/2022 10:52 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 198 10.0 ug/L 200 99 80-120 Barium 203 10.0 ug/L 200 102 80-120 Beryllium 20.3 1.00 ug/L 20.0 101 80-120 Cadmium 19.9 1.00 ug/L 20.0 100 80-120 Chromium 202 10.0 ug/L 200 101 80-120 Cobalt 204 10.0 ug/L 200 102 80-120 Copper 205 10.0 ug/L 200 103 80-120 Lead 201 10.0 ug/L 200 100 80-120 Nickel 201 10.0 ug/L 200 100 80-120 Selenium 209 10.0 ug/L 200 104 80-120 Silver 204 10.0 ug/L 200 102 80-120 Vanadium 199 10.0 ug/L 200 99 80-120 Zinc 200 10.0 ug/L 200 100 80-120 Matrix Spike (2D26005-MS3) Prepared: 04/26/2022 08:14 Analyzed: 04/29/2022 10:56 Source: CF05187-02 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 100 75-125 Barium 303 10.0 ug/L 200 99.7 102 75-125 Beryllium 20.9 1.00 ug/L 20.0 0.160 U 104 75-125 Cadmium 20.1 1.00 ug/L 20.0 0.360 U 100 75-125 Chromium 200 10.0 ug/L 200 1.40 U 100 75-125 Cobalt 210 10.0 ug/L 200 1.40 U 105 75-125 Copper 207 10.0 ug/L 200 2.12 102 75-125 Lead 204 10.0 ug/L 200 3.10 U 102 75-125 Nickel 206 10.0 ug/L 200 3.00 102 75-125 Selenium 197 10.0 ug/L 200 6.20 U 99 75-125 Silver 205 10.0 ug/L 200 1.90 U 103 75-125 Vanadium 202 10.0 ug/L 200 1.40 U 101 75-125 Zinc 212 10.0 ug/L 200 4.40 U 106 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 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26005 - EPA 3005A - Continued Matrix Spike Dup (2D26005-MSDS) Prepared: 04/26/2022 08:14 Analyzed: 04/29/2022 10:58 Source: CF05187-02 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 0.8 20 Barium 302 10.0 ug/L 200 99.7 101 75-125 0.2 20 Beryllium 20.9 1.00 ug/L 20.0 0.160 U 104 75-125 0.05 20 Cadmium 20.2 1.00 ug/L 20.0 0.360 U 101 75-125 0.7 20 Chromium 200 10.0 ug/L 200 1.40 U 100 75-125 0.2 20 Cobalt 210 10.0 ug/L 200 1.40 U 105 75-125 0.1 20 Copper 207 10.0 ug/L 200 2.12 102 75-125 0.08 20 Lead 205 10.0 ug/L 200 3.10 U 103 75-125 0.6 20 Nickel 207 10.0 ug/L 200 3.00 102 75-125 0.1 20 Selenium 203 10.0 ug/L 200 6.20 U 102 75-125 3 20 Silver 205 10.0 ug/L 200 1.90 U 103 75-125 0.002 20 Vanadium 202 10.0 ug/L 200 1.40 U 101 75-125 0.2 20 Zinc 213 10.0 ug/L 200 4.40 U 106 75-125 0.1 20 Post Spike (2D26005-PS1) Prepared: 04/26/2022 08:14 Analyzed: 04/29/2022 11:01 Source: CF05187-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.203 0.0100 mg/L 0.200 -0.00242 102 80-120 Barium 0.302 0.0100 mg/L 0.200 0.0997 101 80-120 Beryllium 0.0209 0.00100 mg/L 0.0200 -5.73E-5 104 80-120 Cadmium 0.0202 0.00100 mg/L 0.0200 -5.16E-5 101 80-120 Chromium 0.200 0.0100 mg/L 0.200 0.000286 100 80-120 Cobalt 0.210 0.0100 mg/L 0.200 0.000326 105 80-120 Copper 0.207 0.0100 mg/L 0.200 0.00212 102 80-120 Lead 0.204 0.0100 mg/L 0.200 0.000869 102 80-120 Nickel 0.207 0.0100 mg/L 0.200 0.00300 102 80-120 Selenium 0.210 0.0100 mg/L 0.200 -0.00548 105 80-120 Silver 0.207 0.0100 mg/L 0.200 0.000875 103 80-120 Vanadium 0.203 0.0100 mg/L 0.200 -8.37E-5 101 80-120 Zinc 0.214 0.0100 mg/L 0.200 0.00435 105 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 2D28027 - EPA 5030B MS Blank (2D28027-BLK3) Prepared: 04/28/2022 00:00 Analyzed: 04/28/2022 11:51 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-d8 5.1 u9/L 5.00 102 75-125 LCS (2D28027-BSI) Prepared: 04/28/2022 00:00 Analyzed: 04/28/2022 11:25 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 93 80-133 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 20 Of 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 2D28027 - EPA 5030B MS - Continued Matrix Spike (2D28027-MS1) Prepared: 04/28/2022 00:00 Analyzed: 04/28/2022 17:01 Source: AF03336-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 270 E 2.0 ug/L 25.0 250 104 80-133 Toluene-d8 5.0 u9/L 5.00 99 75-125 Matrix Spike Dup (21328027-MS131) Prepared: 04/28/2022 00:00 Analyzed: 04/28/2022 17:26 Source: AF03336-01 Spike Source Analvte Result Flaq POL Units Level Result %REC 1,4-Dioxane 270 E 2.0 ug/L 25.0 250 93 Toluene-d8 4.5 u9/L 5.00 90 %REC RPD Limits RPD Limit Notes 80-133 0.9 19 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 21 Of 24 (� �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 22 of 24 ►31 0 V N 0 u C C N a cr 0 0 w 0,^ Vi U w 0 Z Q U w cc 0 a ir 0 W a J Z 0 R X w N 2 0 U J z w 2 Z O 7 Z uj m Q N O rn LL oLo N v �� c U a) U N ayi OJ a! N C E U �j E y Cn Ill N CD `'15 E E G� C? E_ F j cr O m p p Z_ m E J _ a N cc Q) y C C V � 7 6 V U � t � x N 4] � _ = m Z E w m m n m � Z 15 gR: cG � O U d m N z m ¢ ¢ rr: z E U m 1 r1 t' C ro c •\~-1 N — N � m • N v U E_ [`N_} E E 10 L 1� t�Yy A 11 pp eS' $'gd'lil'n'J'��'�'J' `�B's8'"�V'• V O 5 n O E o al INIS 009ZB' 1 xlpueddy 0O9ZS X >C X X v �o C 'J m� E C E E m V! 0 w U a mm ^ N L m 1 a✓ '1 4, U a ftl C e r~a d Ic m m c �� E m m m E O LD m , 1 r v ar z I {� Q� c� �� H m ,n �_- c'� as o r 1 N ¢�_ ^ U a 0- a a m m n 3 m a a "' � Q O X O m d N (: mcr r Q' mLn n tS Z jE o w N N N N N m d m Wo � � W 6 0 E! co (D 0 � r � � F L CAS � Page23 of 24 U a W H m ,Ii Li - Sample Preservation Verification ENCO Cary Work Order: CF05185 Client: Golder Associates, Inc. (GO007) Lo ed Ind 22-A r 22 13 05 �uco Project: White Street LF-Phase 1,11,111 SW Project #: 19131339.105 gg p - Logged By: Samantha L yatt Preservation Check Performed By: C Date/Ti me: q�V?17_% 1 `,� CF05185-01 Cott Type Pres (pH) Requirement pH Checked I In Control pH Adjusted Datemme .:.Adiusted Reagent Used/Comments A 250mLP+HNO3 <2 Y / N / NA Y ! ,�N 1 NA CF05185-02 Cont yp Type Pres (pH) Requirement pH Checked I .,In Control Date/Time pH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y I N I NA Y /t N/ NA CF05185-03 Cont T e yP Pres (pH) pH Checked 1 DateMme pH Adjusted Reagent Used/Comments Requirement it) Control Adjusted A 250mLP+HNO3 <2 Y! N! NA Y N 1 NA CF05185-04 Cont T e yp Pres (pH) Requirement pH Checked 1 - 1 Control DaterFime pH Adjusted Adiusted Reagent Used/Comments A 250mLP+HNO3 <2 Y N / NA FY / N ! NA Rea ent Name I'D 1 2 pH Strip 1D. Reagent Name ID 3 4 Reacient Name ID 5 6 C:IELMNT1Printlwko_PreservationCheck.rpt Page 24 _. 24 WORK ORDER Printed: 4/25/2022 9:16:52AM CF05185 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase I,II,III SW Project Number: 19131339.105 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: David E. Wilder Date Received: 22-Apr-22 12:30 Logged In By: Samantha L Hyatt Date Logged In: 22-Apr-22 13:05 Work Order Comments: C-511 received at 1.0°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, May 4, 2022 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.105, Project Name/Desc: White Street LF-Phase I,II- Spring ENCO Workorder(s): CF05184 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, April 22, 2022. 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, Amanda L. Gaines 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 7 PROJECT NARRATIVE Date: May 4, 2022 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11- Spring Lab ID: CF05184 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 The 8260D Continuing Calibration Verification (CCV) exhibited a high bias for Bromomethane; however, this analyte was not detected in the associated samples. Quality Control Remarks No Comments Other Comments All samples received under this work order arrived in acceptable conditions. The samples were not checked for chlorine, as it is not required. 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. Amanda Gaines 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 7 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-MW33 Lab ID: CF05184-01 Sampled: 04/20/22 13:22 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/17/22 04/29/22 05:18 05/03/22 10:46 EPA 6020E EPA 3005A 10/17/22 04/26/22 03:58 04/27/22 16:11 EPA 7470A EPA 245.1 05/18/22 04/29/22 05:32 05/03/22 04:03 EPA 8260D EPA 503013_MS 05/04/22 04/27/22 12:43 04/27/22 17:50 EPA 8260D EPA 503013_MS 05/04/22 04/28/22 16:04 04/29/22 14:01 Client ID: 4103-SW5 Lab ID: CF05184-02 Sampled: 04/20/22 08:15 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/17/22 04/29/22 05:18 05/03/22 10:49 EPA 6020B EPA 3005A 10/17/22 04/26/22 03:58 04/27/22 16:15 EPA 8260D EPA 503013_MS 05/04/22 04/27/22 12:43 04/27/22 18:15 EPA 8260D EPA 503013_MS 05/04/22 04/28/22 16:04 04/29/22 14:29 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 17 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-MW33 Lab ID: CF05184-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 97.9 1.10 10.0 ug/L EPA 6010D Vanadium - Total 3.69 J 1.40 10.0 ug/L EPA 6010D Client ID: 4103-SWS Lab ID: CF05184-02 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 43.6 1.10 10.0 ug/L EPA 6010D Copper - Total 2.91 J 1.60 10.0 ug/L EPA 6010D Zinc - Total 21.0 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 17 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CF05184-01 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 13:22 Work Order: CF05184 Project: White Street LF-Phase I,II- Spring Sampled By:Travis Martinez/Darren Co> 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]A 0.17 u ug/L 1 0.17 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)28026 EPA 8260D 04/29/22 14:01 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)28026 EPA 8260D 04/29/22 14:01 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 of 17 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CF05184-01 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 13:22 Work Order: CF05184 Project: White Street LF-Phase I,II- Spring Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte KAS 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 2D28026 EPA 8260D 04/29/22 14:01 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 96 % 53-136 2D28026 EPA 8260D 04129122 14:01 RKY Dlbromofluoromethane 50 1 50.0 100 % 67-129 2D28026 EPA 8260D 0412912214:01 RKY Toluene-c48 55 1 50.0 109 % 59-134 2D28026 EPA 6260D 0412912214:01 RKY Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 2D29006 EPA 7470A 05/03/22 04:03 CPH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D26004 EPA 6020B 04/27/22 16:11 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Barium [7440-39-3]A 97.9 ug/L 1 1.10 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D29004 EPA 6010D 05/03/22 10:46 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D29004 EPA 6010D 05/03/22 10:46 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26004 EPA 6020B 04/27/22 16:11 JDH Vanadium [7440-62-2]^ 3.69 J ug/L 1 1.40 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl 1,4-Dioxane [123-91-1]^ Surrogates Toluene-d8 Results Flaa Units DF MDL PQL Batch Method Analyzed Ay Notes 0.80 U ug/L 1 0.80 2.0 2D27041 EPA 8260D 04/27/22 17:50 KKW Results DF Soike Lv/ % Rec % Rec Limits Batch Method Analyzed By Notes 4.9 1 5.00 99 % 75-125 2D27041 EPA 8260D 0412712217:50 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 17 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SW5 Lab Sample ID:CF05184-02 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/20/22 08:15 Work Order: CF05184 Project: White Street LF-Phase I,II- Spring Sampled By:Travis Martinez/Darren Cc> Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS 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 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 2D28026 EPA 8260D 04/29/22 14:29 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 2D28026 EPA 8260D 04/29/22 14:29 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 2D28026 EPA 8260D 04/29/22 14:29 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 Of 17 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SW5 Lab Sample ID:CF05184-02 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/20/22 08:15 Work Order: CF05184 Project: White Street LF-Phase I,II- Spring Sampled By:Travis Martinez/Darren Co) 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 2D28026 EPA 6260D 0412912214:29 RKY Dibromofluoromethane 53 1 50.0 107 % 67-129 2D28026 EPA 6260D 0412912214:29 RKY Toluene-d8 55 1 50.0 110 % 59-134 2D28026 EPA 6260D 0412912214:29 RKY 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]^ 0.740 U ug/L 2 0.740 2.00 2D26004 EPA 6020B 04/27/22 16:15 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Barium [7440-39-3]^ 43.6 ug/L 1 1.10 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D29004 EPA 6010D 05/03/22 10:49 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D29004 EPA 6010D 05/03/22 10:49 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Copper[7440-50-8]^ 2.91 J ug/L 1 1.60 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26004 EPA 6020B 04/27/22 16:15 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Zinc[7440-66-6]^ 21.0 ug/L 1 4.40 10.0 2D29004 EPA 6010D 05/03/22 10:49 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 2D27041 EPA 8260D 04/27/22 18:15 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 99 % 75-125 2D27041 EPA 8260D 0412712218:15 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 7 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D28026 - EPA 5030B MS Blank (2D28026-BLK1) Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 06:37 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 47 u9/L 50.0 94 53-136 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 9 Of 17 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D28O26 - EPA 5O3OB MS - Continued (� �Eo www.encolabs.com Blank (2D28026-BLK1) Continued Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 06:37 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Dibromofluoromethane 51 u9/L 50.0 102 67-129 Toluene-& 57 u9/L 50.0 113 59-134 LCS (21328026-BSI) Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 04:47 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 85 75-133 Benzene 17 1.0 ug/L 20.0 84 80-134 Chlorobenzene 18 1.0 ug/L 20.0 88 80-120 Toluene 18 1.0 ug/L 20.0 89 71-120 Trichloroethene 16 1.0 ug/L 20.0 79 74-120 Matrix Spike (2D28026-MS1) Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 05:15 Source: CF05426-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 19 1.0 ug/L 20.0 0.21 U 97 75-133 Benzene 18 1.0 ug/L 20.0 0.15 U 90 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 93 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 94 71-120 Trichloroethene 17 1.0 ug/L 20.0 0.15 U 86 74-120 Matrix Spike Dup (2D28026-MSDI) Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 05:42 Source: CF05426-07 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 92 75-133 5 20 Benzene 19 1.0 ug/L 20.0 0.15 U 95 80-134 6 17 Chlorobenzene 18 1.0 ug/L 20.0 0.17 U 92 80-120 1 16 Toluene 18 1.0 ug/L 20.0 0.14 U 91 71-120 3 17 Trichloroethene 18 1.0 ug/L 20.0 0.15 U 91 74-120 6 22 Metals by EPA 6000/7000 Series Methods - Quality Control Batch 2D29OO6 - EPA 245.1 Blank (2D29006-BLK3) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:24 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 (2D29006-BSI) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:29 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.74 0.200 ug/L 5.00 95 80-120 Matrix Spike (21)29006-MS1) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:32 Source: CFO5551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.97 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 10 Of 17 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals by EPA 6000/7000 Series Methods - Quality Control Batch 2D29006 - EPA 245.1 - Continued Matrix Spike Dup (2D29006-MSDI) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:35 Source: CFO5551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.02 0.200 ug/L 5.00 0.150 U 100 75-125 1 25 Post Spike (2D29006-PS1) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:44 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.38 0.200 ug/L 4.76 0.00924 113 75-125 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26004 - EPA 3005A Blank (2D26004-BLK3) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 15:16 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (2D26004-BSI) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 15:26 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 20.6 1.00 ug/L 20.0 103 80-120 Thallium 20.3 1.00 ug/L 20.0 101 80-120 Matrix Spike (2D26004-MS3) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 15:36 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 39.8 2.00 ug/L 40.0 0.740 U 99 75-125 Thallium 38.3 2.00 ug/L 40.0 0.220 U 96 75-125 Matrix Spike Dup (211326004-MS1131) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 15:40 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 41.4 2.00 ug/L 40.0 0.740 U 103 75-125 4 20 Thallium 39.1 2.00 ug/L 40.0 0.220 U 98 75-125 2 20 Post Spike (2D26004-PS1) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 16:06 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.3 1.00 ug/L 20.0 0.0420 107 75-125 Thallium 20.5 1.00 ug/L 20.0 0.0324 103 75-125 Batch 2D29004 - EPA 3005A Blank (2D29004-BLK3) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:30 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 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 17 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D29004 - EPA 3005A - Continued Blank (2D29004-BLK1) Continued Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:30 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 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 (2D29004-BLK2) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:34 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 (21329004-BSI) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:39 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 205 10.0 ug/L 200 102 80-120 Barium 204 10.0 ug/L 200 102 80-120 Beryllium 20.4 1.00 ug/L 20.0 102 80-120 Cadmium 20.7 1.00 ug/L 20.0 103 80-120 Chromium 203 10.0 ug/L 200 102 80-120 Cobalt 209 10.0 ug/L 200 105 80-120 Copper 204 10.0 ug/L 200 102 80-120 Lead 206 10.0 ug/L 200 103 80-120 Nickel 204 10.0 ug/L 200 102 80-120 Selenium 217 10.0 ug/L 200 109 80-120 Silver 205 10.0 ug/L 200 102 80-120 Vanadium 201 10.0 ug/L 200 100 80-120 Zinc 206 10.0 ug/L 200 103 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 17 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D29004 - EPA 3005A - Continued Matrix Spike (2D29004-MS1) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:42 Source: CF04294-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 200 10.0 ug/L 200 7.60 U 100 75-125 Barium 245 10.0 ug/L 200 43.8 100 75-125 Beryllium 20.8 1.00 ug/L 20.0 0.300 103 75-125 Cadmium 20.5 1.00 ug/L 20.0 0.360 U 102 75-125 Chromium 204 10.0 ug/L 200 1.60 101 75-125 Cobalt 206 10.0 ug/L 200 1.40 U 103 75-125 Copper 205 10.0 ug/L 200 4.92 100 75-125 Lead 207 10.0 ug/L 200 3.10 U 103 75-125 Nickel 202 10.0 ug/L 200 2.20 U 101 75-125 Selenium 204 10.0 ug/L 200 6.20 U 102 75-125 Silver 205 10.0 ug/L 200 1.90 U 102 75-125 Vanadium 201 10.0 ug/L 200 1.40 U 100 75-125 Zinc 500 10.0 ug/L 200 304 98 75-125 Matrix Spike (2D29004-MS2) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:55 Source: CF04294-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 204 10.0 ug/L 200 7.60 U 102 75-125 Barium 239 10.0 ug/L 200 40.5 99 75-125 Beryllium 20.5 1.00 ug/L 20.0 0.160 U 102 75-125 Cadmium 19.9 1.00 ug/L 20.0 0.360 U 99 75-125 Chromium 200 10.0 ug/L 200 1.40 U 100 75-125 Cobalt 203 10.0 ug/L 200 1.40 U 102 75-125 Copper 200 10.0 ug/L 200 1.60 U 100 75-125 Lead 202 10.0 ug/L 200 3.10 U 101 75-125 Nickel 197 10.0 ug/L 200 2.20 U 99 75-125 Selenium 207 10.0 ug/L 200 6.20 U 103 75-125 Silver 203 10.0 ug/L 200 1.90 U 101 75-125 Vanadium 197 10.0 ug/L 200 1.40 U 99 75-125 Zinc 219 10.0 ug/L 200 16.5 101 75-125 Matrix Spike Dup (211329004-MS1131) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:44 Source: CF04294-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 200 10.0 ug/L 200 7.60 U 100 75-125 0.2 20 Barium 243 10.0 ug/L 200 43.8 100 75-125 0.6 20 Beryllium 20.8 1.00 ug/L 20.0 0.300 102 75-125 0.2 20 Cadmium 20.4 1.00 ug/L 20.0 0.360 U 102 75-125 0.08 20 Chromium 203 10.0 ug/L 200 1.60 101 75-125 0.8 20 Cobalt 205 10.0 ug/L 200 1.40 U 102 75-125 0.8 20 Copper 204 10.0 ug/L 200 4.92 100 75-125 0.7 20 Lead 205 10.0 ug/L 200 3.10 U 102 75-125 1 20 Nickel 201 10.0 ug/L 200 2.20 U 100 75-125 0.5 20 Selenium 211 10.0 ug/L 200 6.20 U 105 75-125 3 20 Silver 204 10.0 ug/L 200 1.90 U 102 75-125 0.5 20 Vanadium 199 10.0 ug/L 200 1.40 U 99 75-125 0.8 20 Zinc 499 10.0 ug/L 200 304 98 75-125 0.2 20 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 of 17 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D29004 - EPA 3005A - Continued Post Spike (2D29004-PS3) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:47 Source: CF04294-01 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.205 0.0100 mg/L 0.200 -0.00310 103 80-120 Barium 0.249 0.0100 mg/L 0.200 0.0438 103 80-120 Beryllium 0.0214 0.00100 mg/L 0.0200 0.000300 106 80-120 Cadmium 0.0208 0.00100 mg/L 0.0200 9.75E-6 104 80-120 Chromium 0.209 0.0100 mg/L 0.200 0.00160 104 80-120 Cobalt 0.211 0.0100 mg/L 0.200 0.000842 105 80-120 Copper 0.212 0.0100 mg/L 0.200 0.00492 103 80-120 Lead 0.208 0.0100 mg/L 0.200 0.00194 103 80-120 Nickel 0.206 0.0100 mg/L 0.200 0.000250 103 80-120 Selenium 0.208 0.0100 mg/L 0.200 -0.00345 104 80-120 Silver 0.209 0.0100 mg/L 0.200 0.000463 104 80-120 Vanadium 0.205 0.0100 mg/L 0.200 -0.000492 103 80-120 Zinc 0.503 0.0100 mg/L 0.200 0.304 100 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 2D27041 - EPA 5030B MS Blank (2D27041-BLK1) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 12:57 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-& 4.8 u91L 5.00 96 75-125 LCS (2D27041-BSI) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 12:32 Spike Source O/oREC RPD Analvte Result Flaq Q Units Level Result O/oREC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 96 80-133 Toluene-d8 4.9 u91L 5.00 98 75-125 Matrix Spike (2D27041-MS1) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 21:16 Source: AF03317-01 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 95 80-133 Toluene-d8 5.0 u91L 5.00 99 75-125 Matrix Spike Dup (2D27041-MSD1) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 21:41 Source: AF03317-01 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 94 80-133 1 19 Toluene-d8 4.8 u91L 5.00 96 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 Of 17 (� �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 15 of 17 FA a U U) W_ O T o � N O� z > O U m aW �� W N z O m J D G Z LLJ o Z (ILI m a 0-6 cc r J y U o co z W o o ai OO Ell E Q$ " Lf) E U cn W v � u— m a [n ro a ma Q d d c BH m � uZ hh.l'aS X 0 U (1I W15 oo9Ze' E xlpuemv Qi}rzg X o F �l VltlS t709E9`i�Rua3�3 K Q09L8'l )qpueddy pD9zS v Gi c N a m 0 o U �y W m a '^ VJ W � LL Lo .J 9 � � yyL•� y U E E �. c c7 EL cc klD li L) �1 C V tu- t c •+ 0 L U Z Q a m l� co U-) CDtoA co ro C7 o M O U B ro m cc N N � cc C � E N E rp E Q m V Q Q7 - U 4 Q 0 U � 3 e3 �7 mX a 4Yr� m � s OC � ¢ m ¢ In m O m ❑ m ❑ V } m c a m m m m m m 6 W oa 3 N � N 0 CL CL Q 10 Erg d in tf m LD cc rn c m v a _ 0 ¢ � v +�1 � C C m FPage 16 of 1 a U) Sample Preservation Verification; ENCO Cary Work Order: CF05184 Project: White Street LF-Phase 1,11- Spring Client: Golder Associates, Inc. (00007) Project#; 19131339,105 Logged In: 22-Apr-22 13:16 Logged By: Samantha L yatt Preservation Check Performed By: Date/Time: CF05184-01 Cont Type Pres (pH) Requirement pH Checked I An Controi pH Adjusted Datem►ne Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y 1 N/ NA Y N F NA CF05184-02 Cont Type Pres (pH) Requirement pH Checked / Control pH Adjusted Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y N I NA Y/ N I NA Reagent Name I'D 1 2 pH Strip ID: Reacient Name ID 3 4 Rea ent Name ID 5 6 C:\ELMNT\Print\wko—PreservationCheck.rpt Page 17 of 17 WORK ORDER Printed: 4/25/2022 9:15:29AM CF05184 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase I,II- Spring Project Number: 19131339.105 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: David E. Wilder Date Received: 22-Apr-22 12:30 Logged In By: Samantha L Hyatt Date Logged In: 22-Apr-22 13:16 Work Order Comments: C-511 received at 1.0°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 I, II, III SW Project Reference Number. 19131339.105 Sampling Event Date: April 19 — 21, 2022 Review Date: June 2, 2022 Report #: CF05185, CF05184 \%til) GOLDER Initials: NTT Review: DYR 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 + 1,4-Dioxane NC Appendix I + Detects NC Appendix II 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. NTT Sample receipt condition at laboratory was acceptable. NTT Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES NTT Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). GOLDER ASSOCIATES INC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 3 GOLDER 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). 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 `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. 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 1 Ox resulting in an analytical detection of 1.0 should GOLDER ASSOCIATES NC, INC. �� I j C O L D E R QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 3 of 3 be reported as 10). Those that have been diluted are listed below with the dilution factor. ➢ Antimony and Thallium: All points (2x) 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. 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.: The 8260D Continuing Calibration Verification (CCV) exhibited a high bias for 4- Methyl-2-pentanone, Acrylonitrile, Bromomethane, Chloroethane, and Vinyl acetate; however, these analytes were not detected in the associated samples. APPENDIX C Statistical Worksheets and Summary Table August 2022 Summary of Statistical Analysis White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina GL19131339 April 2022 Detected Monitoring Constituent Reporting Units Groundwater Standard Downgradient Monitoring Well Constituent Concentration Statistical Analysis Proposed Site - Specific GPS NC 2L Interwell Intrawell Cadmium ug/L 2.00 SMW-1 9.55 1.00 19.3 19.0 Cobalt ug/L 1.00 11-1 24.7 10.0 76.3 76.0 11-3 5.72 J -- 114A 11-5 1.45 J 2.93 J -- -- 11-8 7.08 J __ 11-313 3.08 J -- 11-9 1.43 J -- SMW-1 2.90 J -- SMW-3 2.11 J -- Nickel ug/L 100 11-8 128 50.0 170 170 Notes: 1. Statistical worksheets are provided as Appendix C. 2. ug/L = micrograms per liter 3. NC 2L = North Carolina 2L Groundwater Standard 4. GPS = groundwater protection standard %%till GOLDER 1of1 WQStat Plus" v.9.4.32 1 0.8 0.6 J 0) 0.4 0.2 0 4-- 5/1 /05 EPA 1989 Outlier Test MW-13 (bg) n=26 No statistical outliers found. The distribution was not normalizable. Mean = 0.3742 Std. dev. = 0.1382 Critical Tn = 2.681. After outlier removal: mean = 0.3856, std. dev. = 0.128, critical = 2.663. Normality test used: Shapiro Wilk@alpha = 0.05 Calculated = 0.3804 Critical = 0.92 9/21 /08 2/12/12 7/6/15 11 /26/18 4/19/22 Constituent: Cadmium Analysis Run 7/20/2022 1:31 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 1 0.8 0.6 J 0) 0.4 0.2 0 5/1 /05 EPA 1989 Outlier Test MW-14 (bg) n=24 No statistical outliers found. The distribution was not normalizable. Mean = 0.4667 Std. dev. = 0.2436 Critical Tn = 2.644 Normality test used: Shapiro Wilk@alpha = 0.05 Calculated = 0.4531 Critical = 0.916 9/21 /08 2/12/12 7/6/15 11 /26/18 4/19/22 Constituent: Cadmium Analysis Run 7/20/2022 1:32 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 Hollow symbols indicate censored values. Exceeds Limit: SMW-1 16 12 91 3 1 - -=-1 -: 5/1 /05 Prediction Limit Interwell Non -parametric 9/21 /08 2/12/12 7/6/15 11 /26/18 4/19/22 • 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 Limit = 1 Non -parametric test used in lieu of parametric prediction limit because censored data exceeded 50%. Limit is highest of 50 background values. 100% NDs. Report alpha = 0.2308. Individual comparison alpha = 0.01734. Most recent point for each compliance well compared to limit. Insufficient data to test for seasonality; data will not be deseasonalized. Constituent: Cadmium Analysis Run 7/20/2022 1:33 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 20 16 12 J 8 4 0 4- 9/24/13 EPA 1989 Outlier Test SMW-1 n=15 No statistical outliers found. The distribution was not normalizable. Mean = 3.921 Std. dev. = 4.34 Critical Tn = 2.409 Normality test used: Shapiro Wilk@alpha = 0.05 Calculated = 0.8313 Critical = 0.881 6/11 /15 2/26/17 11 /14/18 8/1 /20 4/19/22 Constituent: Cadmium Analysis Run 7/20/2022 1:35 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 Hollow symbols indicate censored values. Within Limit J 161111111 16 12 M 0 4--L 9/24/13 Prediction Limit Intrawell Parametric 6/11 /15 2/26/17 11 /14/18 8/1 /20 4/19/22 ■ SMW-1 background ♦ SMW-1 compliance Limit = 19.31 Background Data Summary (after Cohen's Adjustment): Mean=1.447, Std. Dev.=6.511, n=14, 42.86% NDs. Insufficient data to test for seasonality: data were not deseasonalized. Report alpha = 0.01. Most recent point compared to limit. Constituent: Cadmium Analysis Run 7/20/2022 1:35 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 10 8 6 J 4 2 0 4-- 5/1 /05 EPA 1989 Outlier Test MW-13 (bg) n=24 Statistical outlier is drawn as solid. IMPORTANT: the data did not pass the normality test, but the user chose to continue. Mean = 1.571 Std. dev. = 1.801 Critical Tn = 2.644. After outlier removal: mean = 1.204, std. dev. = 0.1461, critical = 2.624. Normality test used: Shapiro Wilk@alpha = 0.05 Calculated = 0.6058 Critical = 0.914 9/21 /08 2/12/12 7/6/15 11 /26/18 4/19/22 Constituent: Cobalt Analysis Run 7/20/2022 1:45 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 10 8 6 J 0) 4 2 0 4-- 5/1 /05 EPA 1989 Outlier Test MW-14 (bg) n=24 No statistical outliers found. The distribution was not normalizable. Mean = 2.671 Std. dev. = 3.351 Critical Tn = 2.644 Normality test used: Shapiro Wilk@alpha = 0.05 Calculated = 0.5449 Critical = 0.916 9/21 /08 2/12/12 7/6/15 11 /26/18 4/19/22 Constituent: Cobalt Analysis Run 7/20/2022 1:45 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 Hollow symbols indicate censored values. Exceeds Limit: II-1, II-5 48 32 16 0 4-- 5/1 /05 Prediction Limit Interwell Non -parametric 9/21 /08 2/12/12 7/6/15 11 /26/18 4/19/22 • II-1 ♦ II-2 ♦ II-3 ♦ II-4A ■ II-5 • II-6 ♦ II-7 ♦ II-7B ♦ II-8 ■ II-12 • II-3B ♦ II-9 r SMW-1 ♦ SMW-3 SMW-4 Limit = 10 Non -parametric test used in lieu of parametric prediction limit because censored data exceeded 50%. Limit is highest of 48 background values. 100% NDs. Report alpha = 0.2381. Individual comparison alpha = 0.01797. Most recent point for each compliance well compared to limit. Insufficient data to test for seasonality; data will not be deseasonalized. Constituent: Cobalt Analysis Run 7/20/2022 1:46 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 80 64 48 J 0) 32 16 0 4-- 5/1 /05 EPA 1989 Outlier Test n=26 No statistical outliers found. Mean = 36.29 Std. dev. = 15.42 Critical Tn = 2.681 Normality test used: Shapiro Wilk@alpha = 0.05 Calculated = 0.9421 Critical = 0.92 (after natural log transforma- tion) The distribution was found to be log -normal. 9/21 /08 2/12/12 7/6/15 11 /26/18 4/19/22 Constituent: Cobalt Analysis Run 7/20/2022 1:47 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 Within Limit M 48 32 16 0 4-- 5/1 /05 Prediction Limit Intrawell Parametric 9/21 /08 2/12/12 7/6/15 11 /26/18 4/19/22 ■ II-1 background ♦ II-1 compliance Limit = 76.29 Background Data Summary: Mean=36.76, Std. Dev.=15.56, n=25. Insufficient data to test for seasonality: data were not deseasonalized. Report alpha = 0.01. Most recent point compared to limit. Constituent: Cobalt Analysis Run 7/20/2022 1:49 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 50 40 30 J 0) 20 10 0 4-- 5/1 /05 EPA 1989 Outlier Test MW-13 (bg) n=24 No statistical outliers found. The distribution was not normalizable. Mean = 7.992 Std. dev. = 16.22 Critical Tn = 2.644 Normality test used: Shapiro Wilk@alpha = 0.05 Calculated = 0.4595 Critical = 0.916 9/21 /08 2/12/12 7/6/15 11 /26/18 4/19/22 Constituent: Nickel Analysis Run 7/20/2022 1:36 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 50 40 30 J 0) 20 10 0 5/1 /05 EPA 1989 Outlier Test MW-14 (bg) n=24 No statistical outliers found. The distribution was not normalizable. Mean = 10 Std. dev. = 18.27 Critical Tn = 2.644 Normality test used: Shapiro Wilk@alpha = 0.05 Calculated = 0.5118 Critical = 0.916 9/21 /08 2/12/12 7/6/15 11 /26/18 4/19/22 Constituent: Nickel Analysis Run 7/20/2022 1:37 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 Hollow symbols indicate censored values. Exceeds Limit: II-8 J K11111] 160 120 0 4-- 5/1 /05 Prediction Limit Interwell Non -parametric 9/21 /08 2/12/12 7/6/15 11 /26/18 4/19/22 II-1 11-2 11-3 11-4A 11-5 11-6 11-7 11-713 11-8 11-12 I I-313 11-9 SMW-1 SMW-3 SMW-4 Limit = 50 Non -parametric test used in lieu of parametric prediction limit because censored data exceeded 50%. Limit is highest of 48 background values. 100% NDs. Report alpha = 0.2381. Individual comparison alpha = 0.01797. Most recent point for each compliance well compared to limit. Insufficient data to test for seasonality; data will not be deseasonalized. Constituent: Nickel Analysis Run 7/20/2022 1:37 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 200 160 120 J 80 40 0 4-- 5/1 /05 EPA 1989 Outlier Test n=27 No statistical outliers found. The distribution was not normalizable. Mean = 69.73 Std. dev. = 28.52 Critical Tn = 2.698 Normality test used: Shapiro Wilk@alpha = 0.05 Calculated = 0.7243 Critical = 0.923 9/21 /08 2/12/12 7/6/15 11 /26/18 4/19/22 Constituent: Nickel Analysis Run 7/20/2022 1:39 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table WQStat Plus" v.9.4.32 Hollow symbols indicate censored values. Within Limit J KIIIIl 160 120 -O 0 4- 12/1 /08 Prediction Limit Intrawell Parametric 8/5/11 4/8/14 12/11 /16 8/15/19 4/19/22 ■ II-8 background ♦ II-8 compliance Limit = 169.9 Background Data Summary (after Cohen's Adjustment): Mean=52.74, Std. Dev.=45.71, n=23, 47.83% NDs. Insufficient data to test for seasonality: data were not deseasonalized. Report alpha = 0.01. Most recent point compared to limit. Constituent: Nickel Analysis Run 7/20/2022 1:43 PM Facility: White Street Landfill - Phase 11 Data File: Stats Input Table APPENDIX D EPA Natural Attenuation Screening Protocol Forms and BIOCHLOR Monitored Natural Attenuation Analysis for April 2022 Sampling Event Natural Attenuation Screening Protocol Interpretation Score '1 f f rc : 13 Scroll to End o1'rable Inadequate evidence for anaerobic blodegradalloW of chlorinated organlcs 0 to 5 Limited evidence for anaerobic biodegradation' of chlorinated organics 6 to 14 h� Illawirp IIs taken r,'I [Fi. II,I 'A pl�.J, �� I il,. r I �.,�, I ��„I iMIw5llr'�ry IG Ecnrynd lilor*EE h•nrrii li il.,I i. "'I,Inr.o,„�., Adequate evidence for anaerobic biodegradation' of chlorinated organics 1 b to 20 strong evidence for anaerobic biodegradation' of chlorinated organlcs -20 1Y.�n,dl�. a.Ll dl,nn„u111l Concentration in Points Analysis Most Contam Zone Intarpretatlon Yes No Awarded Oxygen* ill mg/L Tolerated, suppresses the reductive pathway at higher concentrations 0 w) ] > 5mg/L Not tolerated, however, VC may be oxidized aerobically Nitrate* <1 mg/L At higher concentrations may compete with reductive pathway O c) 2 Iron II* }1 mg/L Reductive pathway possible, VC may be oxidized under FL-(111)-reducina conditions O I Sulfate* <20 mg/L At higher concentrations may compete with reductive pathway O 2 Sulfide* a1 rl Reductive pathway possible 0 O 0 Methane' >0,6 mg/L Ultimate reductive daughter product, VC Accumulates O © 0 Oxidation Reduction Potential* (ORP) <50 millivolts (mV) Reductive pathway possible O 0 1 <-100mV Reductive pathway likely 0 @) 0 pH' 5 < pH < 9 Optimal range for reductive pathway O 0 0 TOC >20 mg/L Carbon and energy source; drives dechlorination; can be natural or anthre o enic O 0 2 Temperature* >20°C At T >20'C biochemical process Is accelerated 0 Q 0 Carbon Dioxide >2x background Ultimate oxidative daughter product 0 0 0 Alkalinity >2x background Results from interaction of carbon dioxide with aquifer minerals Q 0 1 Chloride >2x background Daughter product of organic chlorine 0 a 0 Hydrogen >1 nM Reductive pathway possible, VC may accumulate 0 0 Volatile Fatty Acids }0.1 mg/L Intermediates resulting from biodegradation of aromatic cum ounds carbon and energy source 0 2 BTEX* 0.1 mg/L Carbon and energy source; drives dechlorination 0 Q 0 POE* Material released 0 Q 0 TCE* Daughter product of PCE ei 0 0 DCE" Daughter product of TCE, If cis is greater than 800/ of total DICE it is likely a daughter roduot of TCE'/' 1 1-DCE can be a them reaction produotoi 0 (U o VC* Daughter product of DOE" 0 1f 1,1,1- Trichloroethane* Material released O 0 DCA Daughter product of TCA under reducing conditions 0 0 Carbon Tetrachloride Material released 0 Q 0 Chloroethane* Daughter product of DCA or VC under reducing conditions O O 0 Ethene/Ethane >0.01 mg/L Daughter product of VC/ethene O Q 0 >0 1 mg/l. Daughter product of VC/ethene 0 0 Chloroform Daughter product of Carbon Tetrachloride Q 0 0 Dichloromethane ['Daughter product of Chloroform 0 O 0 *required anulysis. al faults Iwo Idad nniy lfd auto ho milown lhnl th— nni harm rl is it d:r]All 101 nod ucl i , not it aonetihlcnl of Ilic Moil rrw N A NI.). DATE: 07/12/2022 Project #: 19131339 %% % I) G O L D E R Prepared By: TJM Reviewed By: DYR SCQIt� Izr:yr l Title: II-1 MNA SCREENING Appendix April 2022 MNA Evaluation p_1 White Street Landfill, Permit No. 41-03 Natural Attenuation Screening Protocol Interpretation Score S Co 1-e: 5 Scroll to End of Table Inadequate evidence for anaerobic biodegradation' of chlorinated organics 0 to 5 Limited evidence for anaerobic biodegradation' of chlorinated organics 6 to 14 u a.r-.i i :�Itwrr ir�a �,i. 1° ° Adequate evidence for anaerobic biodegradation' of chlorinated organics 15 to 20 Strong evidence for anaerobic biodegradation" of chlorinated orgenlC5 >20 �.IudNe A-hlnnn0- Concentration in Points Analysis Most Contam bone Interpretation Y0r, No Awarded Oxygen` <0.5 mg/L Tolerated, suppresses the reductive pathway at higher concentrations 0 0 0 > 5mg/L Not tolerated; however, VC may be oxidized aerobically O O 0 Nitrate* <1 mg/L At higher concentrations may compete with reductive pathway © 7 2 Iron II* �1 mg/L Reductive pathway possible; VC may be oxidized under Fe(Ill)-reducina conditions 0 0 Sulfate* <20 mg/L At higher concentrations may compete with reductive pathway O 0 Sulfide* >1 mg/L Reductive pathway possible 0 O 0 Methane` >0.5 mg/L Ultimate reductive daughter product, VC Accumulates O 0 0 Oxidation Reduction Potential* (CRP) <50 millivolts (mV) Reductive pathway possible O Q Cl. <-100mV Reductive pathway likely 0 0 0 pH* 5 < pH < 9 Optimal range for reductive pathway O 0 0 TOO >20 mg/L Carbon and energy source; drives dechlorination; can be natural or anthro o enic 0 Q 0 Temperature* >20°C At T >20°C biochemical process is accelerated O 0 Carbon Dioxide >2x background Ultimate oxidative daughter product 0 0 0 Alkalinity n2x background Results from interaction of carbon dioxide with aquifer minerals Q 0 1 Chloride* ;�2x background Daughter product of organic chlorine O 2 Hydrogen >1 nM Reductive pathway possible, VC may accumulate 0 CO) 0 Volatile Fatty Acids >0.1 mg/L Intermediates resulting from biodegradation of aromatic compounds; carbon and energy source O 0 BTLX* >0.1 mg/L Carbon and energy source; drives dechlorination O 0 PCE' Material released (D 0 0 TCE" Daughter product of PCE ° (� O 0 DCE* Daughter product of TCE. If cis is greater than 801/o of total DICE it is likely a daughter raduct of TCE®; 1 1-DCE can be a chem, reaction product of TCA Q 0 VC* Daughter product of DCE" 0 0 1,1,1- Trichlorcethane* Material released 0 O 0 DCA Daughter product of TCA under reducing conditions O O 0 Carbon Tetrachloride Material released 0 O 0 Chloroethane' Daughter product of DCA or VC under reducing conditions 0 0 0 Ethene/Ethane �0.01 mg/L Daughter product of VC/ethene 0 0 >0-1 mg/L Daughter product of VC/ethene O OO 0 Chloroform Daughter product of Carbon Tetrachloride O O 0 Dichloromethane Daughter product of Chloroform 0 0 *required analysis. - a/ Points awarded on]), if it uan be shown Lha 1. the compound is a dxuehler produel. SCORE Reset (i.a., not It acrnsiituanI orthra source NAPI I !tlrtil Jf4 �Ax}i1' �, DATE:07/12/2022 Title: N INI) G O L D E R II-9 MNA SCREENING April 2022 MNA Evaluation White Street Landfill, Permit No. 41-03 Appendix D-2 Project#: 19131339 Prepared By: TJM Reviewed By: DYR Natural Attenuation Screening Protocol Interpretation Score 5 Co I-e : Spr011 to End of Tahle nedequate evidence for anaerobic blodegradetlW of chlorinated organics 0 to 5 limited evidence for anaerobic hiodegradation` of chlorinated organics 6 to 14 , Ina uacaN i,��io�oi IW��PA, io�ri ,�i i�..... cimase herv., n.r.,;ualalory Adequate evidence for anaerobic biodegradation* of chlorinated organics 15 to 20 Strong evidence for anaerobic biodegradation" of chlorinated organics a20 rpd,�":nve ��iP.�:nionnflnon Concentration In points Analysis Most Contam. Zone Interpretation YOM No Awarded Oxygen* -eD.5 mg/L Tolerated, suppresses the reductive pathway at higher concentrations O 0 > 5mg/L Not tolerated; however, VC may be oxidized aerobically O ce) Nitrate* <1 mg/L At higher concentrations may compete with reductive pathway OO C Iron II* >1 mg/L Reductive pathway possible; VC may be oxidized under FeCill)-recluoing conditions O n 0 Sulfate* <20 rng/L At higher concentrations may compete with reductive pathway O n 0 Sulfide* 71 mg/L Reductive pathway possible O © 0 Methane* >0,5 mg/L Ultimate reductive daughter product, VC Accumulates O Q U Oxidation Reduction Potential* (ORP) <50 millivolts (mV) Reductive pathway possible O O U c-100mV Reductive pathway likely O 0 pH* 5 a pH < 9 Optimal range for reductive pathway 0 O 0 TOC >20 mg/L Carbon and energy source; drives dechlorination; can be natural or anthroo enic O O 0 Temperature* >20°C At T >20°C biochemical process is accelerated O 0 Carbon Dioxide >2x background Ultimate oxidative daughter product O O 0 Alkalinity }2x background Results from interaction of carbon dioxide with aquifer minerals O 1 Chloride* >2x background Daughter product of organic chlorine O 0 Hydrogen >1 nM Reductive pathway possible, VC may accumulate O 0 Volatile Fatty Acids >0 1 mg/L Intermediates resulting from biodegradation of aromatic compounds, carbon and energy source O O 0 BTEX* >0.1 mg/L Carbon and energy source, drives dechlorination O (0) 0 PCE' Material released O O 0 TCE* Daughter product of PCE ° O OO 0 DCE* Daughter product of TCE. It cis is greater than 60% of total DCE it is likely a daughter product of TCE`v; 1 1-DCE can be a ahem, reaction product of TCA © U 2 VC* Daughter product of DCE" O 0 1,1,1- Trichloroethane* Material released O so 0 DCA Daughter product of TCA under reducing conditions 0 O 2 Carbon Tetrachloride Material released O 0 Chloroethene* Daughter product of DCA or VC under reducing conditions O 0 Ethene/Ethane >0.01 mg/L Daughter product of VC/ethene 0 O 0 -0.1 mg/L Daughter product of VC/ethene 0 0 0 Chloroform Daughter product of Carbon Tetrachloride O O 0 Dichlororriethane Daughter product of Chloroform O 0 *required analysis. e/ Points awot-cled only if it can be shown that tha vompound is a rlaug,hicr prorluct SCORE Reset (i.d., riot ii constituero of thesour, ro N API,). Wil G O L D E R DATE:07/12/2022 Title: SMW-3 MNA SCREENING April 2022 MNA Evaluation White Street Landfill, Permit No. 41-03 Appendix D-3 Project#: 1/131339 Prepared By: TJM Reviewed By: DYR 1310CHE_OR Natural Attenuation Decision Support System TYPE OF CHLORINATED SOLVENT: 1. ADVECTION Seepage Velocity' or Hydraulic Conductivity Hydraulic Gradient Effective Porosity 2. DISPERSION Alpha x' (Alpha y) ! {Alpha x)' iAlnha zl 11Alnha srf" Ethenes W Ethanes 0 White St LF Data Input Instructions: Version 2.2 Phase II 115 1 Enter value directly.. or Excel '97 Faun Name ') or 2. Calculate by filling in gray 5. GENERAL 0.02 cells. Press Enter, then C Simulation Time' 32 (yr) t L ~ (To restore formulas, hii "Restore Formulas' button y Modeled Area Width' 500 (ft) yy Variable' Data used directly in model. Mode#ed Area Length' 400 (ft) Test if Zone 1 Length' 400 (ft) Attenuation Biotransformation Natural ln Zone 2 Length' 0 (ft) Zone 2= is Occurring '--� g Protocol L - Zone 1 Vertical Plane Source: Determine Source Well 6. SOURCE DATA TYPE Continuous Location and Input Solvent Concentrations Source Options Single Planar Source Thickness in Sat. Zone' Y1 3. ADSORPTION Width- (ft) 400 Retardation Factor` R or Cone (mg1L)' C1 Soil Bulk Density, rho t , (kgIL1 PCE .02 FraetionOrganieCaton, be I-) TCE -02 Partition Coefficient Koc DCE -029 PCE 426 (Ukg) 4.62 (-} VC 012 TCE 130 (Ukg) 2,11 (-) ETH 0.0015 DCE 125 (Ukg) 2.06 H VC 30 (Ukg) 1 25 (-) 7. FIELD DATA FOR COMPARISON ETH 302 (Ukg) 357 H PCE Cone. (mg1LJ Common R ( used in model)* = 2.11 TCE Cone. (mg/L) 4. BIOTRANSFORMATION 4st Order Decay Coefficient' DCE Conc- (mg1L) Zone i h (1tyr) half -fife (yrs) y ekl VC Cone. (mgly PCE TCE o-990 f 0.70 0.79 ETH Cone. (mg/L) TCE DCE o.900 F 077 074 Dwar�cp from Source rf. DCE VC 1.733 040 0 64 Date Data Collected VC ETH 2-567 fr 0.27 0.45 8. CHOOSE TYPE OF OUTPUT TO SEE: Zone 2 � i, otyr) half-iife (yrs) l PCE TCE 0,0W F— TCE DCE o.000 F "ELP RUN CENTERLINE DCE VC o.000 VC —i ETH 0-t700 f Vs 284.9 inyft K 2 6E-04 Icmissxa 0.0211 Ifr1ft) n 002 11 (ft) Calc. ( ) Alpha x 9 (-) 25 (ft) (1lyr} 0 0 View of Plume Looking Down 0 0 Observed Centerline Conc. at Monitoring Wells 0 D 0 0 .0 004 .0 00 0 D.0 D 75 350 za22 Hf Restore RESET elp Formulas RUN ARRAY SEE OUTPUT Paste Example DlSSOLV€D CHLORINATED SOLVENT CCNCENTRATIONS ALONG PLUME CENTERLINE ImWLI at Z-0 —No DrgradalionrProducturt—Segeeneal let Oder Decay • Held D.ra eom Site _ A06 Scc PCE 010D Sce TCE Sce OCE m 4110 D.O1O i1 - — --- S-VC ;p 56 10D 0 t50 200 250 300 4S0 c t] 0.001 - scc ETM Distance From source (ft.) In — turn to ,2i1 ea.s InAe Prepare Animation Log C-->Lrnrer put To All To tarry DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (myLI at Z-0 —Na Degn druoaRmd, rtldn—S'equeneal 1M Oreer DeaV ■ rind Der. ". she 1 DOD Sn PCE See TCE 0100 C o See bCE 'n I00 0001 g 50 100 150 200 250 3DD 350 400 450 See VG c U 0001 See @TH Distance From Source (D.y Tlmc Prepare Anlma4on Return to Input TO All To Array LLop i� Lmear DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE ImgIL) at Z=O —No Oa9raddo.0-n duotbn —Sequential Iel Order Decay ■ FbN Data Irom S4e I ON Sea PCE 0 100 See TCE C c 400 See WE Z. 0010 Sao VC g 50 100 ISO 40 250 300 350 400 dig c 0 001 sac !TH Oistance From Source (R.) Thm: r s Prepare Animation Return toInput To All To Array iog t==?irnear DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mot-) at 2 Distance ham Source (ft) VC 0 4p SO 120 0 160 200 340 280 320 "'1 400 No Degrnde0on C•012 0O1' CCl- 7 0012 0012 012 0012 OOt2 Field Oata from —No DegratlatbnRm&u ,—Sageenaal tat Da,!, Decay ■ Field Data hom Srte I ODD See PCE J m E TCE 0100 see c D see Dee ` OG10 oil 400 d 50 100 150 200 250 D 450 gee VG O 0 004 See ETH Distance From Scum* (!t.) TNnet Prepare Animation Log Reap °11to To All To Array DISSOLVED CHLORINATEDSOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mglllat Z�O —No DegnedaWn.PmEucrba +—Seq-M.l 19 C—Decay ■ F1.d Deta Itom SAe 1 DDO - See PCE See TCE 0 100 c o Sea OCE Te 0010 - m 0 150 200 250 )DO 350 400 450 Be. VC U 080E 9B�M@6 19B iVB—geed—vE- -de-- 4gD >-ru Distance From Source (R.) Time; Prepare Animation Ritr=rnlln To All To Ar r.,y Log <==JLinaar BIOCHLOR Natural Attenuation Decision Support System TYPE OF CHLORINATED SOLVENT Ethanes 9 Ethanes O 1. ADVECTION Seepage Velocity' Vs 294.9 (fllyr) or Hydraulic Conductivity K 2 5E-04 (cmisec) Hydraulic Gradient i 00211 (fSfft) Effective Porosity n 002 {-} 2. DISPERSION Alpha x' 47-5 (ft) Calc. (Alpha y)1(Alpha x}' 0.1 {-} Alpha x (Alpha z) I (Alpha x)1 E-99 {-} 3. ADSORPTION Retardation Factor' R or Version 2.2 Excel '97 White St LF Phase II Ian Name 5. GENERAL Simulation Time' 32 (yr) L �' Modeled Area Width' 500 (ft) W Modeled Area LengV# ' 400 (ft) Zone 1 Length' 400 (ft) Zone 2 Length' 0 (ft) Zone 2= L - Zone 1 SOURCE DATA TYPE, Continuous Source Options Single Planar Source Thickness in Sat Zone' Y1 Width" (ft) 400 Cone_ (mg1L)' C1 Soil Bulk Density, rho 1 7 (kglL) PCE 02 FraetionOrganieCarbon, foe t of-4 {-j TCE 02 Partition Coefficient Koc OCE 029 PCE 426 (Llkg) 4.62 (-) VC 012 TCE 130 (Llkg) 211 (-) ETH 0.0015 DCE 125 (Llkg) 206 (-) VC 30 (Llkg) 1 25 {-} 7. FIELD DATA FOR COMPARISON ETH 302 (Llkg) Common R (used in model)' = 357 { } PCE Conc. (mg/L) TCE Cone, OWL) DCE Cone - (mi 2 11 4. BIOTRANSFORMATiON -1st Order Decay coefficient' Zone 1 � )_ (llyr) half-life {yrs) Yield ,VC Cone (mg/L) PCE TCE 0.990 F 070 10.79 , ETH Cone, (mg1L) TCE DCE 0.900 F 077 0.74Distance from Source (fti DCE VC 1.733 F 0.40 0.64 Date Data Collected Data Input Instructions: 115 1- Enter value directly. or T or 2. Calculate by filling in gray 0.02 cells. Press Enter, then (To restore formulas. hit "Restore Formulas" button Variable" Data used directly in model. Test if — Biot ransformation Natural Attenuation is Occurring Screening Protocol Vertical Plane Source: Determine Source Well Location and Input Solvent Concentrations 25 {rtJ • Kz (liyr} a 0 View of Plume Looking Down 0 0 Observed Centerline Conc at Monitoring Wells 0 i VC ETH 2,567 E— 027 0.45 $. CHOOSE TYPE OF OUTPUT TO SEE: Zone 2 � r- (1h'r) half-life (yrs) PCE TCE 0 000 f �. TCE DCE 0000 RUN CENTERLINE RUN ARRAY DCE VC 0.000 VC ETH 0.000 Restore RESET Help Formulas SEE OUTPUT Paste Example DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (niOL) at Zito Distance from Source 4141 PCE No Ce �No Drvnp.ronrA'�duclwn �5ea-.no.i lx oip.ro y • i,.ia tla. nom s.e 1 000 See PC E 6100 5ee Tee C 2 See OCE ADO 4ot9 - b 0 56 lao 150 b0 89 300 :.GO See vC c U O o01 - 5ee ETH Distance Foam Source (e.) lime: Prepare Animation Return to00 Input 7e All To Array Lag C=� Unear DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE(myl". arZ=O Distance from Soulcelfil Field Data ham — DegradehoMPmdu , lei order Deny • rlela Data fiom sir 1 OOO Srr PCE 2 p Igo See TCE C C See DCE ADO m0 ot4 + 50 Ie0 1b0 2oO 250 300 350 400 490 See vc c U cool See ETH Distance From Source (ft.) 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ADSORPTION Retardation Factor" R or Soil Bulk Density, rho t 7 (kglL) FractionOrganicCarbon, foc 1.oE,a H Partition Coefficient Koc y PCE 426 (Ukg) 462 (-) TCE 130 (Ukg) 2-11 (-) DCE 125 (Ukg) 206 H VC 30 (Ukg) 1.25 H ETH 302 (Ukg) 3,57 H Common R (used in model)" = 2.1 4, BIOTRANSFORMATION -1st Order Decay Coefficient" Zone 1 <�= 7 (11yr) half-life (yrsl Yield PCE TCE 0,9go F 070 079 TCE DCE 0.900 F 0.77 0.74 DCE VC 1.733 F 0,40 064 ETH 2.567 F 027 045 Zone 2 C:::� )., (1/yr) half-life (yrs) PCE TCE 0.000 E X TCE DCE 0.000 F HELP DCc VC 0.000 ETH 0.000 E` Version 2.2 Excel ,97 5. GENERAL Simulation Time' Modeled Area Width' Modeled Area Length' Zone 1 Length' Zone 2 Length' White St LF Phase II Fain Name 32 (yr) {`L 1000 (ft) W 500 (ft) i 500 (ft) 0 (ft) Zone 2= L • Zone 1 SOURCE DATA TYPE: Source Options Source Thickness in Sat. Zone Y1 Width" (ft) 900 (mg/ L)" C1 TCE DCE VC ETH 7. FIELD DATA FOR COMPARISON PCE Conc. (mg/L) TCE Conc. (mglL) DCE Conc. (mg1L) VC Conc. (mg/L) ETH Conc, (ml Distance from Source tfti Date Data Collected Continuous Single Planar 25 (fi) Data Input Instructions: s 1. Enter value directly .... or T u 2. Calculate by filling in gray 002 cells. Press Enter, then C {To restore formulas, hit "Restore Formulas" button ) Variable` Data used directly in model Test if Biotransformation Natural Attenuation is Occurring Screening Protocol Vertical Plane Source: Determine Source Well Location and Input Solvent Concentrations K„ (1lyr) 0 0 View of Plume Looking Down 0 0 Observed Centerline Conc at Monitoring Wells 0 Ism 9. CHOOSE TYPE OF OUTPUT TO SEE: Restore. 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