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Home My WebLink About4103_Guilford_WhiteStreet_PhaseII_MSWLF_CDLF_April21GW_FID1606586_20210831GQLDER MEMBER ❑F WSP REPORT First Semi -Annual 2021 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 19131339.103 August 30, 2021 August 30, 2021 Distribution List 19131339.103 Richard Lovett, PG, Environmental Compliance Support Manager, Field Operations, City of Greensboro, 401 Patton Avenue, Greensboro, NC 27406. 336-373-4188. Richard.Lovett@greensboro-nc.gov Lewis Walker, Landfill Compliance Supervisor, Field Operations, City of Greensboro, 2503 White Street, Greensboro, NC 27405. 336-254-8096. Lewis.Walker@greensboro-nc.gov Jackie Drummond, Department of Environmental Quality, Division of Waste Management - Solid Waste Section, 2090 US Highway 70, Swannanoa, NC 28778. 828-296-4706. jaclynne.drummond@ncdenr.gov GOLDER August 30, 2021 19131339.103 Executive Summary On behalf of the City of Greensboro, Golder Associates NC, Inc. (Golder) is submitting the enclosed Water Quality Monitoring Report, which documents the results of the April 27 - 29 and May 7, 2021, compliance monitoring event for the Phase II facility at the White Street Landfill. Surface water monitoring point SW-3 was sampled on May 7, 2021, as access to the location could not be obtained during the April 28 - 29, 2021 event. Compliance Monitoring Program During the April 2021 event, cobalt was detected at concentrations above the Practical Quantitation Limit (PQL) and Interim Maximum Allowable Concentration (IMAC) at downgradient compliance wells II-1 and II-3. Cobalt at several downgradient wells and vanadium at upgradient well 1-1 and downgradient well 1-5 were detected at estimated concentrations below their respective PQLs, but above their respective IMACs 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. The groundwater standard for vanadium is 0.3 ug/L and the PQL is 10 ug/L. Vanadium was also detected at a similar concentration in the sample from upgradient well MW-13 during this event. Naturally occurring metals, which include barium, cadmium, cobalt, vanadium, and zinc, were identified in the October 28, 2016, Alternate Source Demonstration (ASD) and November 20, 2017 addendum. Therefore, no further action is warranted for cobalt and vanadium. Nickel was detected at a concentration above the NC 2L Standard and the PQL at 11-8 as it was during the October 2020 event and will continue to be monitored for trends. Well 11-8 is located between the Phase I and Phase II waste units and it is difficult to determine which landfill may be impacting water quality at II-8. During this event, the following NC Appendix I VOCs were detected at concentrations above their respective PQLs and groundwater standards in samples from compliance monitoring wells: 1,4-dichlorobenzene in the sample from 11-1 and vinyl chloride in the sample from II-2. Detected constituents and concentrations are generally consistent with historical data. The constituent 1,4-dioxane was detected above the PQL and NC 2L Standard in the samples from compliance wells II-1, II-313, II-4A, II-6, II-7, II-8, and II-12 during this event. 1,4-dioxane was analyzed for surface water and groundwater samples per the May 29, 2018, memorandum from the NC 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 and May 2021 event. Corrective Action Monitoring Program During this event cadmium and cobalt at sentinel well SMW-1 were reported at concentrations above their respective PQLs and NC 2L Standards, as they have during previous events. Cobalt was detected at an estimated concentration below the PQL but above the IMAC in the sample from SMW-3 during this event. Cadmium and cobalt were determined to be naturally occurring in the October 28, 2016 ASD. The concentrations of cadmium and cobalt are generally consistent with historical data and no further action is warranted for these estimated concentrations. GOLD ER s� August 30, 2021 19131339.103 Vinyl chloride was detected at a quantifiable concentration above the NC 2L groundwater standard from the sample from sentinel monitoring well SMW-3, as it has been previously. No other 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 concentrations 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. 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 October 2021. If you have any questions, please contact the undersigned at 336-852-4903. GOLDER August 30, 2021 19131339.103 Table of Contents 1.0 INTRODUCTION.............................................................................................................................................1 1.1 Site Description and Background.........................................................................................................1 1.2 Compliance Monitoring History ............................................................................................................1 1.3 Hydrogeologic Setting..........................................................................................................................3 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION.............................................................3 2.1 Visual Inspection Program...................................................................................................................4 2.2 Well Network and Groundwater Elevation Measurements..................................................................4 2.3 April and May 2021 Monitoring Event..................................................................................................4 2.4 Laboratory Analysis Program...............................................................................................................5 3.0 LABORATORY AND FIELD QA/QC..............................................................................................................5 4.0 DATA EVALUATION......................................................................................................................................5 4.1 North Carolina Groundwater and Surface Water Quality Standard Comparisons...............................6 4.1.1 Compliance Monitoring...................................................................................................................6 4.1.2 Corrective Action Monitoring...........................................................................................................6 5.0 CORRECTIVE ACTION PERFORMANCE MONITORING............................................................................7 6.0 CONCLUSIONS..............................................................................................................................................8 7.0 REFERENCES................................................................................................................................................8 TABLES Table 1 Summary of Historical Groundwater Elevation Data Table 2 Summary of Estimated Horizontal Flow Velocities Table 3 Summary of Well Construction Information Table 4 Summary of Groundwater Monitoring Results, Detected Constituents Table 5 Summary of Groundwater Field Parameters Table 6 Summary of Surface Water Monitoring Results, Detected Constituents Table 7 Summary of Surface Water Field Parameters GOLDER IV August 30, 2021 19131339.103 FIGURES Figure 1 Groundwater Surface Contour Map, April 27, 2021 Figure 2 Surface Water Location Map APPENDICES Appendix A Groundwater and Surface Water Sampling Logs Appendix B April and May 2021 Groundwater Certificates -of -Analysis, Chain -of -Custody Forms and Laboratory Data Reviews Appendix C EPA Natural Attenuation Screening Protocol Forms and BIOCHLOR Monitored Natural Attenuation Analysis for April 2021 Sampling Event GOLDER August 30, 2021 19131339.103 1.0 INTRODUCTION This report summarizes the monitoring results from the April 27 - 29 and May 7, 2021, groundwater and surface water sampling event at Phase II of the White Street Landfill in Greensboro, North Carolina (NC). The active unlined construction and demolition debris (C&D) over municipal solid waste (MSW) facility is monitored in accordance with Title 15A NCAC 13B.1635 and .1637. The facility is in central Guilford County and is comprised of a closed, unlined MSW facility (Phase 1), an active unlined C&D over MSW facility (Phase 11), an active Subtitle D MSW facility (Phase 111), and an active Type I compost facility. Phase 11 is currently in Assessment Monitoring and Corrective Action for several detected volatile organic constituents (VOCs) that exceed their respective groundwater standards. The facility is owned and operated by the City of Greensboro under Permit Nos. 41-03 and 41-12 issued by the NC Department of Environmental Quality (DEQ, formerly NC Department of Environment and Natural Resources). The northeastern portion of the landfill property is comprised of the Phase I and Phase II landfills, which are covered under Permit No. 41-03. The southwestern portion of the facility is comprised of the Phase III, which is covered under permit No. 41-12. The water quality monitoring results for the Phase I and Phase III facilities are submitted under separate 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 II landfill. Compliance Monitoring History The original monitoring network consisted of one upgradient well (MW-13) and five downgradient wells (II-1, II-2, II-3, II-4, and II-5). An additional upgradient well (MW-14) and three additional downgradient wells (II-6, II-7, and II-8) were installed in 1995. Assessment monitoring at the Phase II facility was initiated in 1997 due to groundwater exceedances of NC Appendix I constituents. The C&D waste unit began accepting waste over top of the closed Phase II MSW waste unit in 1998. Well II-713 was installed in December 2000. Four monitoring wells (11-9, II-10, II-11, and II-12) were installed in March 2005 as part of the Nature and Extent Study (NES). Well II-12 became part of the compliance network. GOLDER August 30, 2021 19131339.103 In October 2006, the City submitted an Alternate Source Demonstration (ASD) to address NC Appendix I inorganic compounds detected in groundwater samples from the Phase II area. The ASD presented data to support that concentrations of barium, cadmium, cobalt, vanadium, and zinc detected at site monitoring wells are naturally occurring and was approved by the NC DEQ by letter on November 15, 2007. The Phase II facility is currently in corrective action due to above -standard concentrations of VOCs in groundwater. The Corrective Action Plan (CAP) was approved by the NC DEQ on June 24, 2008, which proposed phytoremediation and monitored natural attenuation (MNA) as the remedial strategy. Three sentinel monitoring wells (SMW-1, SMW-3, and SMW-4) were installed in June 2010 and the EBuffer® hybrid poplar trees were installed between March and November 2010. Well II-9 also serves as a sentinel well for the corrective action monitoring program. Monitoring well II-313 was installed in June 2011 to monitor groundwater quality downgradient of II-3, which has been impacted due to its close proximity to waste. The Phase II landfill's compliance monitoring network is currently comprised of 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, II-4A, II-5, II-6, II-7, II-7B, II-8, and II-12 are downgradient compliance wells for the Phase II landfill. Well II-313 is sampled to monitor water quality downgradient of II-3. Groundwater samples are analyzed for the NC Appendix I list of constituents plus NC Appendix II `detects' during the first semi-annual water quality monitoring event of each year and are analyzed for the NC Appendix II list of constituents during the second semi-annual water quality monitoring event of each year. Currently, there are not additional `detects' to be analyzed during the first semi-annual water quality monitoring event of each year. The corrective action monitoring activities include semi-annual monitoring of the four sentinel wells (11-9, SMW-1, SMW-3, and SMW-4). Three compliance monitoring wells (II-1, II-7, II-7B) also serve as sentinel wells for the corrective action program. Groundwater samples from the sentinel wells are analyzed for the same parameters as the compliance monitoring wells. MNA parameters are collected semi-annually from upgradient well MW-13 and sentinel wells II-1, II-9, and SMW-3. The MNA parameters include chloride, nitrate, sulfate, sulfide, ethene, ethane, methane, total organic carbon (TOC), alkalinity, volatile fatty acids (VFAs). A Corrective Action Performance Evaluation Report (CAPER) is to be prepared and submitted to the NC DEQ every five years to evaluate MNA and the phytoremediation at the Phase II landfill. The next CAPER is to be submitted prior to the second semi-annual water quality monitoring event of 2022. The facility's monitoring network also includes five surface water sampling points, SW-1, SW-2, SW-3, SW-4, and SW-5. Surface water point SW-1 is the facility's upstream sampling point located along North Buffalo Creek, west of the facility, along Summit Avenue. Surface water point SW-2 is collected from a tributary to North Buffalo Creek that flows from south to north into the stream, just west and upstream of the facility. Surface water point SW-3 is located west of the facility, downstream of SW-1 and upstream of the confluence of North Buffalo Creek and the tributary from which SW-2 is sampled. Surface water points SW-4 and SW-5 are both located downstream of SW-1, SW-2, and SW-3 along North Buffalo Creek. Surface water point SW-5 is located within the facility's property, at the northern end of the Phase II landfill and SW-5 is located to the east of the facility, off Rankin Mill Road. Surface water points SW-1, SW-2, SW-3, and SW-4 are sampled in conjunction with the groundwater monitoring wells in accordance with the facility's permits and Water Quality Monitoring Plan for the Phase I, Phase II, and Phase III landfills. Surface water point SW-5 is sampled in accordance with the permit 41-03, which includes the Phase I and Phase II landfills, but does not include the Phase III landfill. GOLDER August 30, 2021 19131339.103 1.3 Hydrogeologic Setting The White Street Landfill is located within the Carolina Slate Belt of the Piedmont Physiographic Province of NC (NCGS, 1985). Generally, the Carolina Slate Belt consists of Late Proterozoic to Cambrian volcanic and greenschist-facies, metasedimentary rocks intruded by plutonic suites (Butler and Secor, 1991). The site geology is characterized by a regional -scale felsic intrusive complex, which consists mainly of white to gray, fine- to coarse -grained, massive to foliated metamorphosed granitic rock. The region is characterized by regional and small-scale Mesozoic diabase dikes. The uppermost groundwater beneath the facility is present in a shallow, unconfined aquifer comprised of saprolite and partially weathered rock (PWR). Groundwater occurs at depths of approximately 1 to 30 feet below ground surface. Depth to water measurements, obtained on April 27, 2021, 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 2021 groundwater surface contour map, the hydraulic gradient in the shallow aquifer underlying the site, as measured along the conceptual flow paths shown on the contour map, was calculated to be approximately 0.02 feet/foot. Groundwater velocities were calculated using a hydraulic conductivity of 2.61 X 10-4 centimeters per second (cm/s), which is the average of the hydraulic conductivities calculated for the hydrogeologic units present at the facility's Phase II and Phase III landfills. This average is based on slug test data by BPA Environmental & Engineering Inc. (Phase II) and G.N. Richardson & Associates (Phase III). The estimated effective porosity of the shallow aquifer is expected to range from 0.20 (saprolite) to 0.09 (fractured rock). The effective porosity of saprolite was used in calculations to provide a conservative estimate of groundwater flow. Using the above values, the estimated rate of groundwater flow for the uppermost aquifer beneath the facility was calculated using the following modified Darcy equation: Vgw = KI/ne where Vgw = average linear velocity (feet/year), K = hydraulic conductivity (feet/year), i = horizontal hydraulic gradient, and ne = effective porosity. The average estimated linear groundwater flow velocity under the waste management unit is approximately 315 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 and May 2021 sampling event are discussed in the following sections. GOLDER August 30, 2021 19131339.103 2.1 Visual Inspection Program In order to detect a potential release at the earliest possible time, the visual inspection program is used at the Phase II landfill by the sampling personnel. This program includes physical indicators such as potential water table mounding beneath the waste management unit, physical examination of any stresses in biological communities, visible signs of leachate migration (i.e., leachate seeps), unexplained changes in soil characteristics, and any other change to the environment due to the waste management unit. During the April 2021 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-713, II-8, and II-12), one assessment well (11-31B), and four sentinel wells (11-9, SMW-1, SMW-3, and SMW-4). Available monitoring well construction information for all site monitoring wells is summarized on Table 3, and the well locations are shown on Figure 1. The well locations were selected to yield groundwater samples representative of the conditions in the uppermost aquifer underlying the facility, and to monitor for potential releases from the landfill unit. Three upstream surface water monitoring points (SW-1, SW-2, and SW-3) and two downstream surface water monitoring points (SW-4 and SW-5) are also monitored. Depth -to -water measurements are recorded to the nearest 0.01 foot prior to initiating groundwater purging and sampling activities. The respective groundwater level elevations for this event are presented in Table 1. The historical water level data are also shown on this table. As presented, recent groundwater elevation data for the monitoring well network indicate that the hydraulic head level in the uppermost aquifer beneath the facility is fairly consistent, with temporal variation from the long-term average limited to approximately 5 — 25 feet (plus or minus) under normal conditions. The range in fluctuation appears to be greatest in the upgradient background wells, which are located in a groundwater recharge area. The range in fluctuation in the downgradient compliance wells, which are located near groundwater discharge areas, is less, presumably due to the stabilizing effect of the hydraulic discharge boundary. 2.3 April and May 2021 Monitoring Event Personnel from Golder visited the facility from April 27 - 29, and May 7, 2021, to purge and sample monitoring wells and to sample surface water monitoring points. Surface water monitoring point SW-3 was sampled on May 7, 2021, as access to the location could not be obtained during the April 28 - 29, 2021 event. 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 400 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. GOLDER August 30, 2021 19131339.103 The required groundwater samples were collected directly from the dedicated bladder pump's discharge lines or disposable bailer into the labeled, laboratory -supplied, pre -preserved sample containers after well stabilization 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 and May 2021 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 were also analyzed for approved MNA parameters. Surface water and groundwater samples were also analyzed for 1,4-dioxane per the May 29, 2018, memorandum from the NC DEQ. The samples were received at the laboratory in good condition and were properly preserved. 3.0 LABORATORY AND FIELD QA/QC A duplicate sample was collected at Phase II well II-6 by Golder personnel as part of the April 2020 sampling event for laboratory QA/QC. ENCO analyzed the duplicate sample for the NC Appendix I list of constituents. A laboratory -prepared trip blank accompanied the volatile sample containers to and from the laboratory. ENCO analyzed the trip blank for NC Appendix I VOCs. Reviews of the laboratory data were performed by Golder personnel and are included in Appendix B. The same constituents, with the exception of cobalt at an estimated concentration in the sample from II-6, were detected in the duplicate sample and the sample from II-6. Further, the concentrations from the duplicate sample and the sample from II-6 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 and May 2021 groundwater samples are summarized in Tables 4 and 5 with available historical data. Analytical results and field parameters for the April and May 2021 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. GOLDER August 30, 2021 19131339.103 4.1 North Carolina Groundwater and Surface Water Quality Standard Comparisons Compliance monitoring analytical results for the April and May 2021 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 2021 event, cobalt was detected at concentrations above the Practical Quantitation Limit (PQL) and Interim Maximum Allowable Concentration (IMAC) at downgradient compliance wells II-1 and II-3. Cobalt and vanadium were detected at estimated concentrations below their respective PQLs, but above their respective IMACs in the samples from one or more downgradient compliance wells during this event. Per 15A NCAC 02L .0202 (b)(1), "where the standard (i.e., the NC 2L Standard) for a substance is less than the PQL, the detection of that substance at or above the PQL constitutes a violation of the standard." The groundwater standard for cobalt is 1 microgram per liter (ug/L) and the PQL is 10 ug/L. The groundwater standard for vanadium is 0.3 ug/L and the PQL is 10 ug/L. Vanadium was also detected at a similar concentration in the sample from upgradient well MW-13 during this event. Naturally occurring metals, which include barium, cadmium, cobalt, vanadium, and zinc, were identified in the October 28, 2016, Alternate Source Demonstration (ASD) and November 20, 2017 addendum. Therefore, no further action is warranted for cobalt and vanadium. Nickel was detected at a concentration above the NC 2L Standard and the PQL at II-8 as it was during the October 2020 event and will continue to be monitored for trends. Well II-8 is located between the Phase I and Phase II waste units and it is difficult to determine which landfill may be impacting water quality at II-8. During this event, the following NC Appendix I VOCs were detected at concentrations above their respective PQLs and groundwater standards in samples from compliance monitoring wells: 1,4-dichlorobenzene in the sample from II-1 and vinyl chloride in the sample from II-2. Detected constituents and concentrations are generally consistent with historical data. The constituent 1,4-dioxane was detected above the PQL and NC 2L Standard in the samples from compliance wells II-1, II-313, II4A, II-6, II-7, II-8, and II-12 during this event. 1,4-dioxane was analyzed for surface water and groundwater samples per the May 29, 2018, memorandum from the NC 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 and May 2021 event. 4.1.2 Corrective Action Monitoring During this event cadmium and cobalt at sentinel well SMW-1 were reported at concentrations above their respective PQLs and NC 2L Standards, as they have during previous events. Cobalt was detected at an estimated concentration below the PQL but above the IMAC in the sample from SMW-3 during this event. Cadmium and cobalt were determined to be naturally occurring in the October 28, 2016 ASD. The concentrations of cadmium and cobalt are generally consistent with historical data and no further action is warranted for these estimated concentrations. Vinyl chloride was detected at a concentration above the NC 2L groundwater standard and the PQL from the sentinel monitoring well SMW-3. No other 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 GOLDER August 30, 2021 19131339.103 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. 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 C of this report. The screening results present the scoring criteria in the Protocol, as calculated for downgradient / sentinel monitoring wells II-1, II-9, and SMW-3 for the April 2021 event. Based on the EPA's screening protocol, monitoring well SMW-3 received a score of 18, which indicates adequate evidence for anaerobic biodegradation of chlorinated solvents (EPA,1999). II-1 received a score of 14, which indicates limited evidence for anaerobic biodegradation of chlorinated organics. II-9 received a score of 5, which indicates inadequate evidence for anaerobic biodegradation of chlorinated organics. The natural attenuation screening protocol forms are included as Figures C-1, C-2, and C-3 in Appendix C. Based on the results of the screening protocol, there is evidence that natural attenuation is occurring at the site; therefore, modeling was performed on the April 2021 data to simulate remediation by natural attenuation using a screening model called BIOCHLOR (EPA, 2000). The flow paths between II-9 and SMW-3, II-2 and SWM-1, and II-3 and II-3B were selected for modeling due to the alignment of monitoring wells with groundwater flow downgradient of the Phase II waste unit, essentially following the contaminant plume. The models assume that waste was first placed in the Phase II Landfill in 1995. The BIOCHLOR modeling program generates plots that compare concentrations of tetrachloroethene, trichloroethene, dichloroethene, vinyl chloride, and ethene over time with no degradation, to concentrations where sequential 1st order biological attenuation is occurring. Each data input page and the associated constituent plots are provided as Appendix C. Figures C-4 and C-5 in Appendix C show the BIOCHLOR modeling results of flow path II-2 and SMW-1 for April 2021. Dichloroethene and vinyl chloride concentrations for II-2 plotted below their respective 1st order decay line during the event. Tetrachloroethene, trichloroethene, and ethene were not detected in samples from II-2 and SMW-1 during the event. Additionally, dichloroethene and vinyl chloride were not detected in the sample from SMW-1. The results from these plots indicate that natural attenuation is occurring at the site and that as long as conditions at the site continue to be strongly anaerobic, biodegradation will likely continue. Figures C-6 and C-7 in Appendix C show the BIOCHLOR modeling results of flow path II-3 and II-3B for April 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-3B during the event. GOLDER August 30, 2021 19131339.103 Figures C-8 and C-9 in Appendix C show the BIOCHLOR modeling results of flow path II-9 and SMW-3 for April 2021. Tetrachloroethene, trichloroethene, and ethene were not detected in samples from wells II-9 and SMW-3. Dichloroethene and vinyl chloride were not detected at II-9. The dichloroethene concentration for SMW-3 plots just above the line for first order decay. The vinyl chloride concentration for SMW-3 plots below the line for first order decay. 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 2021 at the facility indicate that biodegradation is occurring downgradient of the Phase II waste unit. 6.0 CONCLUSIONS Based on these results, the City of Greensboro will continue groundwater monitoring the Phase II landfill in accordance with the requirements of the Assessment Monitoring and Corrective Action Programs, as outlined in Title 15A NCAC 13B .1635 and .1637. Also, based on the results, the City of Greensboro will continue the implementation of groundwater corrective action in accordance with the approved Corrective Action Plan. The next semi-annual monitoring event is tentatively scheduled for October 2021. 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. GOLDER August 30, 2021 Signature Page Golder Associates NC, Inc. David "Dusty" Y. Reedy II, PG Senior Hydrogeologist Rachel P. Kirkman, PG Principal and Senior Consultant Engineering Lic. No. C-2862/Geology Lic. No. C-399 19131339.103 Golder Associates NC, Inc. is a licensed user of the Golder trademark, and an associated operating entity. Golder and the G logo are trademarks of Golder Associates Corporation. https://golderassociates.sharepoint.com/sites/116193/20xxxxx/phase 103- 1st sa wqm 2021/200 - deliverables/252 - final/phase ii/19131339.103_phase ii.docx r� GOLDER 9 Tables August 2021 19131339.103 TABLE 1 Summary of Historical Groundwater Elevation Data White Street Landfill - Phase II, Permit No. 41.03 Greensboro, North Carolina Well IDs MW-13 MW-14 11.1 11.2 II-3 11.313 114 II4A 11.5 11.6 11.7 11.713 11.8 11.9 11.10 11.11 11.12 SMW-1 SMW-3 SMW4 TOC Elevation (ft AMSL) 741.24 786.65 702.78 704.59 699.37 694.49 707.30 707.25 722.01 704.39 697.75 700.86 717.76 696.78 703.78 701.63 700.96 692.87 694.16 697.43 Date GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW 10/14/98 718.61 22.69 738.95 26.35 749.56 19.02 743.48 21.17 671.9 16.15 NI NI 688.64 14.63 NI NI 705.51 8.80 683.11 15.36 668.22 15.86 - -- 696.94 10.15 NI NI NI NI NI NI NI NI -- -- -- - -- -- 05/25/99 722.11 19.19 741.60 23.70 675.66 16.68 670.01 20.04 672.46 15.59 NI NI 694.41 8.86 NI NI 707.57 6.74 688.64 9.83 670.21 13.87 - -- 697.02 10.07 NI NI NI NI NI NI NI NI -- -- -- -- -- -- 09/22/99 721.32 19.98 738.15 27.15 675.19 17.15 670.19 19.86 672.50 15.55 NI NI 691.48 11.79 NI NI 707.59 6.72 686.67 11.80 670.41 13.67 - -- 697.40 9.69 NI NI NI NI NI NI NI NI - -- -- -- -- -- 03/27/00 722.49 18.81 742.16 23.14 677.07 15.27 671.51 18.54 672.63 15.42 NI NI 696.90 6.37 NI NI 708.31 6.00 689.25 9.22 670.66 13.42 - -- 697.69 9.40 NI NI NI NI NI NI NI NI - -- -- -- -- -- 09/13/00 722.37 18.93 741.46 23.84 675.85 16.49 6.70.67 19.38 672.95 15.10 NI NI 693.97 9.30 NI NI 707.49 6.82 687.37 11.10 670.36 13.72 - -- 697.39 9.70 NI NI NI NI NI NI NI NI - -- -- -- -- -- 03/13/01 721.80 19.50 742.16 23.14 676.73 15.61 671.13 18.92 673.10 14.95 NI NI 696.35 6.92 NI NI 708.09 6.22 688.44 10.03 670.57 13.51 - -- 697.37 9.72 NI NI NI NI NI NI NI NI - -- -- -- -- -- 09/13/01 720.98 20.32 739.35 25.95 675.60 16.74 669.64 20.41 672.12 15.93 NI NI 691.94 11.33 NI NI 706.96 7.35 684.39 14.09 669.83 14.25 669.61 17.60 697.35 9.74 NI NI NI NI NI NI NI NI - -- -- -- -- -- 03/08/02 719.08 22.22 739.11 26.19 677.70 14.64 670.10 19.95 672.27 15.78 NI NI 693.72 9.55 NI NI 707.68 6.63 685.95 12.52 670.25 13.83 670.16 17.05 697.07 10.02 NI NI NI NI NI NI NI NI - -- -- -- -- -- 09/18/02 722.10 19.20 736.11 29.19 675.66 16.68 672.13 17.92 671.50 16.55 NI NI 689.72 13.55 NI NI 707.14 7.17 685.65 12.82 669.54 14.54 669.44 17.77 697.45 9.64 NI NI NI NI NI NI NI NI - -- -- -- -- -- 04/15/03 724.59 16.71 749.72 15.58 680.23 12.11 672.11 17.94 673.43 14.62 NI NI 698.29 4.98 NI NI 708.16 6.15 690.21 8.26 672.70 11.38 670.97 16.24 697.51 9.58 NI NI NI NI NI NI NI NI - -- -- -- -- -- 10/15/03 722.82 18.48 746.83 18.47 677.58 14.76 671.18 18.87 674.61 13.44 NI NI 696.16 7.11 NI NI 707.53 6.78 687.39 11.08 670.60 13.48 670.34 16.87 697.88 9.21 NI NI NI NI NI NI NI NI - -- -- -- -- -- 03/24/04 722.42 18.88 746.79 18.51 676.86 15.48 670.87 19.18 674.54 13.51 NI NI 697.60 5.67 NI NI 708.04 6.27 687.15 11.32 670.27 13.81 670.13 17.08 697.28 9.81 NI NI NI NI NI NI NI NI - -- -- -- -- -- 09/22/04 722.56 18.74 742.04 23.26 676.70 15.64 670.44 19.61 672.43 15.62 NI NI 693.54 9.73 NI NI 707.45 6.86 687.20 11.27 670.42 13.66 670.14 17.07 697.45 9.64 NI NI NI NI NI NI NI NI - -- -- -- -- -- 05/09/05 722.14 19.16 746.03 19.27 676.38 15.96 670.72 19.33 674.79 13.26 NI NI 696.23 7.04 NI NI 707.03 7.28 686.65 11.82 670.15 13.93 669.9 17.31 697.79 9.30 686.5 10.51 685.16 18.74 685.99 15.78 691.09 8.71 - -- -- -- -- - 10/11/05 719.72 21.58 738.24 27.06 675.00 17.34 668.89 21.16 671.65 16.40 NI NI 690.19 13.08 NI NI 707.16 7.15 683.38 15.09 669.35 14.73 668.88 18.33 697.45 9.64 -- -- -- -- -- -- -- -- - -- -- -- -- -- 04/24/06 720.25 21.05 740.68 24.62 675.67 16.67 669.77 20.28 671.97 16.08 NI NI 695.17 8.10 NI NI 707.83 6.48 686.5 11.97 669.61 14.47 669.46 17.75 697.44 9.65 -- -- - -- -- -- -- -- - -- -- -- -- -- 10/19/06 721.69 19.61 737.16 28.14 675.49 16.85 669.85 20.20 670.91 17.14 NI NI 690.69 12.58 NI NI 706.71 7.60 685.21 13.26 669.85 14.23 669.61 17.60 697.45 9.64 -- -- - -- -- -- -- -- - -- -- -- -- -- 04/12/07 721.61 19.63 764.37 22.28 688.87 13.91 685.82 18.77 683.22 16.15 NI NI 699.63 7.67 NI NI 714.77 7.24 694.20 10.19 685.20 12.55 685.04 15.82 708.44 9.32 -- -- - -- -- -- -- -- - -- -- -- -- -- 09/26/07 717.41 23.83 757.27 29.38 685.00 17.78 682.82 21.77 682.16 17.21 NI NI 691.25 16.05 NI NI 712.51 9.50 689.06 15.33 682.24 15.51 682.04 18.82 707.61 10.15 -- -- - -- -- -- -- -- - -- -- -- -- -- 04/29/08 722.96 18.28 759.74 26.91 691.81 10.97 685.65 18.94 683.80 15.57 NI NI 698.27 9.03 NI NI 716.34 5.67 696.92 7.47 687.78 9.97 684.84 16.02 708.45 9.31 -- -- - -- -- -- 691.93 7.87 - -- -- -- -- -- 12/03/08 __ __ __ __ __ __ __ __ __ __ NI NI __ __ NI NI __ __ __ __ _ __ __ __ _ __ __ __ _ __ __ __ __ __ 04/17/09 722.87 18.37 759.02 27.63 688.68 14.10 685.68 18.91 683.71 15.66 NI NI 698.92 8.38 NI NI 716.10 5.91 695.43 8.96 684.61 13.14 683.83 17.03 708.50 9.26 -- -- - -- -- -- 691.11 8.69 - -- -- -- -- -- 04/28/10 721.70 19.54 762.67 23.98 686.53 16.25 684.56 20.03 682.37 17.00 NI NI 699.75 7.55 NI NI 714.49 7.52 692.48 11.91 683.86 13.89 681.55 19.31 708.27 9.49 -- -- - -- -- -- 689.55 10.25 - -- -- -- -- -- 08/03/10 -- 762.73 23.92 685.82 16.96 684.30 20.29 -- NI NI -- -- NI NI -- -- -- -- 683.30 14.45 683.05 17.81 - -- 685.08 11.70 - -- - -- -- -- 681.75 11.12 683.83 10.33 688.76 8.67 10/11/10 721.13 20.11 757.98 28.67 685.92 16.86 683.97 20.62 682.04 17.33 NI NI 692.80 14.50 NI NI 713.80 8.21 691.86 12.53 683.59 14.16 683.29 17.57 708.27 9.49 - -- - -- -- -- 688.91 10.89 681.70 11.17 683.85 10.31 688.87 8.56 05/09/11 722.33 18.91 759.52 27.13 687.65 15.13 685.22 19.37 682.45 16.92 -- 696.97 10.33 NI NI 715.10 6.91 693.52 10.87 684.06 13.69 683.82 17.04 708.57 9.19 - -- - -- -- -- 689.74 10.06 -- -- -- -- -- -- 10/10/11 719.26 21.98 754.73 31.92 685.92 16.86 684.36 20.23 681.86 17.51 680.33 14.16 691.34 15.96 NI NI 714.83 7.18 691.29 13.10 683.73 14.02 683.59 17.27 708.19 9.57 684.76 12.02 - -- -- -- 689.36 10.44 682.30 10.57 683.80 10.36 688.85 8.58 04/18/12 721.34 19.90 758.49 28.16 687.78 15.00 684.95 19.64 682.07 17.30 - -- 697.57 9.73 NI NI 714.68 7.33 693.47 10.92 684.01 13.74 683.70 17.16 708.38 9.38 686.03 10.75 - -- -- -- 689.89 9.91 682.99 9.88 684.23 9.93 690.22 7.21 10/24/12 719.13 22.11 758.49 28.16 686.03 16.75 684.19 20.40 681.56 17.81 680.33 14.16 693.62 13.68 NI NI 714.25 7.76 691.75 12.64 683.46 14.29 683.26 17.60 708.06 9.70 684.76 12.02 - -- -- -- 688.57 11.23 682.30 10.57 683.80 10.36 688.85 8.58 04/30/13 721.96 19.28 757.43 29.22 688.40 14.38 685.82 18.77 681.48 17.89 681.14 13.35 697.80 9.50 - -- 715.45 6.56 695.50 8.89 685.48 12.27 684.51 16.35 708.65 9.11 687.18 9.60 - -- -- -- 690.91 8.89 686.58 6.29 684.75 9.41 691.61 5.82 09/12/13 721.66 19.58 758.54 28.11 686.44 16.34 684.83 19.76 682.06 17.31 680.57 13.92 - - 695.29 11.96 713.70 8.31 691.87 12.52 683.88 13.87 683.42 17.44 708.50 9.26 685.57 11.21 - -- -- -- 688.14 11.66 682.23 10.64 683.67 10.49 688.50 8.93 04/23/14 723.00 18.24 761.60 25.05 689.63 13.15 686.51 18.08 683.17 16.20 681.44 13.05 - - 699.98 7.27 715.64 6.37 695.43 8.96 684.59 13.16 684.08 16.78 709.05 8.71 687.80 8.98 - -- -- -- 690.51 9.29 685.60 7.27 684.72 9.44 691.72 5.71 10/03/14 717.90 23.34 755.73 30.92 685.67 17.11 683.70 20.89 681.26 18.11 679.98 14.51 - - 690.94 16.31 711.57 10.44 689.30 15.09 682.64 15.11 683.42 17.44 707.75 10.01 683.76 13.02 - -- -- -- 687.04 12.76 681.46 11.41 682.42 11.74 684.80 12.63 04/14/15 720.64 20.60 756.79 29.86 688.38 14.40 684.97 19.62 683.23 16.14 680.83 13.66 -- - 695.82 11.43 715.58 6.43 693.89 10.50 684.04 13.71 683.63 17.23 708.57 9.19 686.13 10.65 - -- -- -- 688.92 10.88 684.52 8.35 684.38 9.78 690.08 7.35 10/05/15 723.23 18.01 -- -- 687.14 15.64 684.80 19.79 682.61 16.76 681.11 13.38 -- - 690.94 16.31 716.01 6.00 691.91 12.48 683.80 13.95 683.35 17.51 708.24 9.52 685.62 11.16 - -- -- -- 688.98 10.82 685.98 6.89 684.19 9.97 689.43 8.00 04/19/16 721.94 19.30 759.55 27.10 687.44 15.34 685.77 18.82 683.21 16.16 680.97 13.52 -- - 698.83 8.42 715.49 6.52 693.70 10.69 684.37 13.38 683.66 17.20 708.33 9.43 686.83 9.95 - -- -- -- 689.03 10.77 -- -- -- -- -- -- 09/26/16 721.03 20.21 -- -- 686.88 15.90 684.54 20.05 682.70 16.67 680.36 14.13 - - 692.57 14.68 715.53 6.48 690.15 14.24 683.66 14.09 683.61 17.25 708.21 9.55 685.10 11.68 - -- -- -- 687.81 11.99 681.41 11.46 683.96 10.20 686.38 11.05 03/21/17 - -- -- -- 686.40 16.38 685.21 19.38 -- -- -- -- -- -- 695.11 12.14 -- -- 692.10 12.29 683.43 14.32 - -- - -- - -- - -- - -- -- -- - -- -- - -- - 04/25/17 722.07 19.17 <757.30 >TOP 697.36 5.42 687.31 17.28 684.33 15.04 683.67 10.82 - - 696.42 10.83 716.84 5.17 699.09 5.30 689.44 8.31 687.18 13.68 708.93 8.83 689.14 7.64 - -- -- -- 693.52 6.28 687.75 5.12 688.56 5.60 693.84 3.59 10/16/17 720.11 21.13 <757.06 >29.60 685.44 17.34 683.87 20.72 682.03 17.34 680.13 14.36 - - 691.91 15.34 715.07 6.94 689.70 14.69 682.49 15.26 682.34 18.52 708.10 9.66 684.44 12.34 - -- -- -- 687.72 12.08 681.02 11.85 683.13 11.03 686.30 11.13 04/16/18 722.80 18.44 755.05 31.60 689.77 13.01 686.14 18.45 683.76 15.61 681.81 12.68 - - 696.74 10.51 716.60 5.41 688.81 15.58 685.69 12.06 685.18 15.68 708.85 8.91 687.64 9.14 - -- -- -- 691.56 8.24 687.60 5.27 685.64 8.52 692.31 5.12 10/16/18 723.27 17.97 754.04 32.61 687.43 15.35 685.50 19.09 683.74 15.63 681.25 13.24 693.32 13.98 692.94 14.31 715.82 6.19 694.88 9.51 683.96 13.79 683.48 17.38 708.55 9.21 686.74 10.04 - -- -- -- 690.16 9.64 685.38 7.49 684.77 9.39 691.62 5.81 04/08/19 723.66 17.58 763.10 23.55 688.59 14.19 686.68 17.91 684.88 14.49 681.92 12.57 693.32 13.98 701.04 6.21 716.39 5.62 694.83 9.56 683.94 13.81 683.86 17.00 709.35 8.41 688.24 8.54 - -- -- -- 689.83 9.97 686.89 5.98 684.95 9.21 691.66 5.77 10/07/19 720.82 20.42 758.35 28.30 685.40 17.38 684.44 20.15 682.52 16.85 680.35 14.14 - - 691.54 15.71 713.26 8.75 690.00 14.39 682.15 15.60 681.98 18.88 708.16 9.60 684.15 12.63 - -- -- -- 687.87 13.09 683.16 9.71 682.46 11.70 686.68 10.75 04/20/20 722.86 18.38 763.04 23.61 686.92 15.86 686.13 18.46 683.99 15.38 681.37 13.12 - - 699.35 7.90 716.00 6.01 693.36 11.03 683.44 14.31 683.46 17.40 708.86 8.90 686.27 10.51 - -- -- -- 689.68 11.28 685.17 7.70 683.95 10.21 690.08 7.35 10/13/20 724.25 16.99 761.86 24.79 687.35 15.43 685.87 18.72 683.53 15.84 681.36 13.13 - - 696,61 10.6. 715.06 6.95 693.95 10.44 683.78 13.97 683.61 17.25 708.85 8.91 686.35 10.43 686.22 17.56 686.23 15.40 691.36 9.60 686.49 6.38 684.67 9.49 690.83 6.60 04/27/21 723.49 17.75 768.78 17.87 687.39 15.39 686.04 18.55 684.12 15.25 681.34 13.15 701.62 5.68 700.72 6.53 716,02 5.99 693.51 10.88 683.86 13.89 683.50 17.36 708.91 8.85 686.74 10.04 686.63 17.15 686.32 15.31 689.64 11.32 684.45 8.42 684.03 10.13 690.23 7.20 MEAN 721.62 19.64 752.08 25- 685.11 15.47 681.59 19.48 678.95 16.05 681.07 13.42 694.88 10.21 695.69 11.56 712.12 6.92 690.56 11.60 678.99 13.71 679.77 1724 704.19 9.44 686.13 10.66 686.00 i -82 686.18 15.50 689.72 10.25 684.13 8.74 684.27 9.89 689.60 7.83 MAXIMUM 724.59 23.83 768.78 32.61 749.56 19.02 743.48 21.77 684.88 18.11 683.67 14.51 701.62 16.05 701.04 16.31 716.84 10.44 699.09 15.58 6879.44 15.86 687.18 19.31 709.35 10.15 689.14 13.02 686.63 18.74 686.32 15.78 693.52 13.09 687.75 11.85 688.56 11.74 693.84 12.63 MINIMUM 717.41 16.71 736.11 15.58 675.00 5.42 66&89 17.28 670.91 13.26 679.98 10.82 688.64 4.98 690.94 6.21 705.51 5.17 683.11 5.30 668.22 8.31 668.88 13.68 696.94 8.41 683.76 7.64 685.16 17.15 685.99 15.31 687.04 6.28 681.02 5.12 682.42 5.60 684.80 3.59 Notes: 1. It AMSL = feet above mean sea level. 2. -- = not measured or no data 3. TOC = top of rasing 4. NI = not installed 5. MW = monitoring well, GW = groundwater, DTW = depth to water 6. TOC and Water Elevation Data for dates prior to April 2017 from historical S&ME, Inc. Ground and Surface Water Monitoring Reports. 7. Well TOC survey conducted 2013-2014 by S&ME, Inc. for more accurate elevations. GOLDER ft>MEMBER OR WSP 1 of1 August 2021 TABLE 2 Summary of Estimated Horizontal Flow Velocities White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina 19131339.103 April 2021 Gradient Flow Gradient Gradient Segment Horizontal Effective Porosity Hydraulic Velocity Calculation Direction Segment Length Elevations Gradient (ne) Conductivity (V,., feet/year) Segment (feet) (feet) (i, feet) (K, cm/sec) is West -Northwest 2355 ---------- 690----------- 0.0255 0.02 2.61E-04 344 i4 North -Northwest 1412 690 0.0212 0.02 2.61E-04 287 Average i Average VFW 0.0234 315 Notes: 1. Horizontal velocities based on the modified Darcy equation V9W = 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 GOLDER M EM6F 1 1 of 1 August 2021 TABLE 3 Summary of Well Construction Information White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina 19131339.103 Monitoring Well Identification Northing Easting Date of Construction Top -of -Casing Elevation (ft AMSL) Well Depth (feet) Well Diameter (inches) Screened Interval (ft bgs) Geology of Screened Interval Well Status II-1 863027.3314 1787495.6766 07/14/89 702.78 26.6 2 20.0 30.0 Water Table Aquifer Compliance / Sentinel Well II-2 864184.3539 1788403.6364 07/14/89 704.59 33.4 2 24.0 34.0 Water Table Aquifer Compliance Well II-3 864245.1544 1789031.9589 07/14/89 699.37 32.6 2 23.0 33.0 Water Table Aquifer Compliance Well II-313 864365.2295 1789116.1385 06/03/11 694.49 25.0 2 10.0 25.0 Water Table Aquifer NES Well II-4A 863581.7689 1789359.9497 08/13/13 707.25 25.0 2 10.0 25.0 Water Table Aquifer Compliance Well II-5 863032.9389 1789345.4003 07/14/89 722.01 16.0 2 19.0 29.0 Water Table Aquifer Compliance Well II-6 862513.6388 1787002.3258 07/14/89 704.39 20.7 2 7.5 20.0 Water Table Aquifer Compliance Well II-7 863701.8380 1787823.6893 07/14/89 697.75 27.7 2 12.5 27.5 Water Table Aquifer Compliance / Sentinel Well II-713 863703.7309 1787839.3286 12/11/00 700.86 103.5 2 90.7 103.5 Water Table Aquifer Compliance / Sentinel Well II-8 861207.1750 1786938.1186 07/14/89 717.76 35.0 2 20.0 35.0 Water Table Aquifer Compliance Well II-9 863924.1830 1787952.6658 03/21/05 696.78 25.0 2 7.8 21.8 Water Table Aquifer Sentinel Well II-12 862084.6402 1786802.0936 03/22/05 699.80 22.8 2 5.7 19.7 Water Table Aquifer Compliance Well SMW-1 864374.8279 1788376.0728 07/08/10 692.87 18.4 2 8.4 18.4 Water Table Aquifer Sentinel Well SMW-3 863983.9035 1787857.4169 07/08/10 694.16 25.0 2 10.0 25.0 Water Table Aquifer Sentinel Well SMW-4 862512.4617 1786835.2747 07/08/10 697.43 23.9 2 8.9 23.9 Water Table Aquifer Sentinel Well MW-13 858763.9106 1783188.5206 07/14/89 741.24 33.8 2 20.0 35.0 Water Table Aquifer Background Well MW-14 859453.8757 1788632.2264 07/14/89 786.65 34.4 2 20.0 35.0 Water Table Aquifer Background Well Notes: 1. ft AMSL= feet above mean sea level 2. ft bgs = feet below ground surface 5. Unless otherwise noted, well construction survey information, Water Quality Monitoring Reports and Water Quality Monitoring Plans provided by Survey Solutions S&ME. GOl4EF ..,a ,. 1 of 1 August 2021 TABLE 4 Smmary of Grondwater Monitoring Reslts Detected Conatitents White Street L-dfill - Phase 11, Permit No. 41413 Greensboro, North Caroline Method Practical SWS Auessmenl Oetedetl Monitoring Cons[nuent Reporting Sample Oetedion DuamitMion Reporting Upgradient Monitoring Wells Compllance DowngradieM Monitoring Walls Monitorng Sentinel Monitorng Wells Blanks Units Date Limn Limit Limn MW-13 MW-1I 11.1 11.2 II-S INA II-5 II-fi II-] II-78 II.B II-12 Well IISB III 8MW4 8MW-3 BMWd Antimony ugIL ONO NJ9 -- -- 30 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- - NO IMAC=1 ugIL ugIL 09/01/99 - - 30 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO EPA MCL=bugIL ugIL 03101/00 -- -- 30 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- - NO ugIL 09/01/00 - - 30 NO NO NO NO NO - NO NO NO NO NO - - - - NO ugIL 03/01/01 -- -- 30 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- - NO ugIL 09/01/01 - - 30 NO NO NO NO NO - NO NO NO NO NO - - - - ND ugIL 03/01/02 -- -- 30 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- ND ugIL 09/01/02 - - 30 NO NO NO NO NO - NO NO NO NO NO -- -- - - - - NO ugIL 04/15/03 -- -- 30 NO NO NO NO NO - NO NO NO NO NO -- -- - - -- - NO ugIL 10/01/03 - - 30 NO NO NO NO NO - NO NO NO NO NO -- - - - NO ugIL 03/01/04 -- -- 30 NO NO ND NO NO -- NO NO NO NO NO NO -- NO - - - NO ugIL 09/01/04 - - 30 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ugIL OS/01/OS -- -- 30 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO ugIL 10/01/05 - - 30 NO NO 0.54 NO NO - NO NO NO NO NO -- -- - - - - NO ugIL 04/0110 -- -- - -- -- -- ug/L 10/01/O6 - - 30 NO NO NO NO NO - NO NO NO NO NO -- -- - - - - NO ugIL 04/12/07 -- -- -- NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO ugIL 09/28/07 - NO NO NO NO NO -- NO NO NO NO -- - - - - NO ugIL D4/29/08 0.68 -- 6 NO NO NO NO NO -- NO NO NO NO NO NO -- - - - - NO ugIL 12J01/08 0.68 - 6 NO NO NO NO NO -- NO NO NO NO NO NO - - - - - NO ugIL D4/17/09 0.68 -- 6 NO NO NO NO NO -- NO ND NO NO NO NO -- - - - - NO ugIL 10/16/09 0.073 - 6 NO NO NO NO NO -- NO 0.211 J NO NO NO - - - - - NO ugIL 04/28/10 0.22 -- 6 NO NO NO NO NO -- NO 0.242 J NO 0.248 J NO NO -- - NO ugIL 08/02110 0.22 - 6 -- -- - -- -- -- -- -- -- - NO NO NO NO ugIL 10/11/10 0.22 -- 6 NO NO 0.224 J NO NO -- NO 0.374 J NO NO NO NO -- - NO NO NO NO ugIL O5/09/11 0.22 - 6 NO NO 0.We J NO NO -- NO NO NO NO NO NO NO ugIL 10/12/11 0.22 -- 6 NO NO 0.276 J NO NO -- NO 0.384 J NO NO NO NO NO NO NO NO NO NO ugIL 04/17/12 0.22 - 6 NO NO 0.527 J NO 0.862 J -- 0.232 J NO NO NO NO NO NO ugIL 10/25/12 0.22 -- 6 NO NO NO NO NO -- NO NO 0.716 J NO NO NO NO NO NO NO NO NO ug/L 05/02113 0.22 - 6 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/24/13 0.22 -- 6 NO NO NO NO NO NO NO 0.345 J NO NO NO NO NO NO NO NO NO NO ugIL W24114 0.22 - 6 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO uyL 10/06/14 0.22 - 6 NO NO 0.296 J NO 0.293 J NO NO NO NO NO NO NO NO NO 0.316 J 0.296 J 0.532 J NO ugIL 04/14/15 0.22 - 6 NO NO 0.331 J 0.614 J NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10107/15 0.22 - 6 0.22 0.418 J NO 0.344 J NO NO NO NO NO NO NO NO NO 0.458 J NO 2."1 NO ugIL 04/20/16 0.22 - 6 ND 022 ND ND 0.282 J NO 0.239 J NO ND NO NO NO NO NO NO NO 0.22 NO ug/L W126/16 0.22 -- 6 NO NO NO NO NO NO 0.244 J ND NO NO NO NO NO NO NO NO NO ugIL 04/25/17 0.37 - 6 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 10117/17 0.37 -- 6 ND NO NO NO NO NO 0.471 J NO NO NO NO NO NO NO NO NO NO ugIL 04/16/18 0.37 6 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10116/18 1.85 500 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04I12/19 1.85 0.50 -- NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ND ug/L 10I07/19 0.74 200 -- NO ND ND ND ND ND ND ND ND ND ND ND ND NO NO NO NO NO ugIL 04/20/20 0.74 2.00 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL IL u 10113120 04/28121 0.74 0.74 2N 2.00 -- NO NO NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND Arsenic ugIL 03/01188 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO NC2L=10 ugIL ugIL 09/01199 -- 10 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO EPA MCL=10 ug/L ugIL 03/01I00 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO ugIL 09/01I00 -- 10 ND ND ND ND ND - NO NO NO NO NO - - -- -- -- -- NO ugIL 03/01I07 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO ugIL 091011.1 -- - 10 ND ND ND ND ND - NO NO NO NO NO - - -- -- -- -- NO ugIL 0M1% -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO ugIL 09/01/02 -- 10 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ugIL 04/15103 -- -- 10 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ugIL 10/01/03 -- 10 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ugIL 03/11104 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO ugIL 09/01/04 -- 10 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ugIL O5/01/OS -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO - NO - - - NO ugIL 10/01/05 -- -- 10 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO ugIL WNW -- -- -- - - - uglL 10101IN -- -- 10 NO NO NO NO NO - NO NO NO NO NO - - - -- -- -- NO ugIL 04/12I07 -- -- -- NO NO NO NO 2.5 J - NO NO NO NO NO - - - -- -- -- NO ugIL 09126107 -- NO 2.8 J NO NO NO - NO NO NO 2.4 J - - -- -- -- NO ugIL 04/29/08 2.0 -- 10 2.4 J 2.9 J NO NO NO - 2.2 J NO 3.1 J NO NO NO - - -- -- -- NO ugIL 1=1/08 2.8 -- 10 NO NO NO NO NO - NO NO NO NO NO NO - - - - - NO ugIL 04/17/09 2.8 -- 10 NO 3.1 B NO 3.8 B NO - NO 3.3 B NO NO NO 4.9 B - - - - - uI, 10/16/09 2.8 -- 10 NO 3.81 J NO NO NO - 3.4 J NO NO 3.95 J NO - - - - - NO ugIL 04/28/10 2.8 -- 10 NO 4.6 J NO NO 4.79 J - NO NO NO 5.22 J NO NO - - ND ugIL 06/02/10 2.8 -- 10 - - - 4.07 J ND NO NO ugIL 10/11/10 2.8 -- 10 NO NO NO NO NO - NO 5.22 J NO NO NO NO - - NO NO NO NO ugIL OW09111 2.8 -- 10 NO 3.08 B NO NO NO - NO NO NO NO NO NO NO ugIL 10/12111 2.8 -- 10 NO NO NO NO NO - NO NO NO NO NO NO NO NO 4.29 J NO NO NO ugIL 04/17/12 2.8 -- 10 3.73 J 3.88 J 3.08 J ND ND - 8.84 J ND ND 8.20 J 10.1 B NO - uglL 10/25/12 2.8 -- 10 NO 2.87 J NO NO NO - 3.10 J 8.68 J 7.97 J 4.09 J NO 6.04 J 7.21 J 3.53 J 6.54 J NO NO ugIL 0WOV13 2.8 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/24/13 5.4 -- 10 NO NO NO 5.78 J NO NO NO NO NO NO NO NO NO NO 5.98 J NO NO NO ugIL 04/26/14 5.4 -- 10 NO 6.51 J NO NO NO NO NO NO NO 7.05 J 5.40 NO NO NO NO NO NO ug/L 10/06/14 5.4 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/14/15 6.8 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/07/15 6.8 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L W20116 6.8 - 10 NO 680 11.6 NO NO NO NO NO NO NO NO NO NO NO NO NO 6.80 NO ugIL 09/26/16 6.8 - 10 NO NO NO NO 9.78 J NO 9.30 J 7.45 J NO NO NO NO NO NO NO NO NO ugIL W/25/17 6.8 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/17/17 6.8 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/16/18 6.8 10 NO NO ND NO NO ND NO NO ND ND ND NO NO NO NO NO NO NO ugIL 10I16/18 7.6 10 -- ND ND ND ND ND ND NO ND NO NO ND ND NO NO NO NO NO ugIL 04I12/19 7.6 f0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND NO NO NO NO NO ug/L 10I07/19 7.6 10 -- ND NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ND ugIL 04120/20 7.6 10 -- ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL u IL 10/13120 04/28121 7.6 7.6 10 10 -- NO NO NO NO NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND Barium ugIL 03/01199 -- -- 500 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO NC 2L=700 ug/L ugIL 09/01I99 -- -- 500 NO NO NO NO NO - NO NO NO NO NO NO EPA MCL=2000 ugIL u9/L 03/01I00 -- -- 500 NO NO NO NO ND - NO NO NO NO NO NO - NO -- -- -- NO ugIL 09/01I00 -- -- 500 NO ND ND ND ND - NO NO NO NO NO - - -- -- -- -- NO u9/L 03/01I01 -- - 500 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO ugIL 09/01101 -- -- 500 NO ND ND ND ND - NO NO NO NO NO - - -- -- -- -- NO u9/L 03101IO2 -- - 500 NO NO NO NO NO - NO NO NO NO NO NO - NO - -- -- NO ugIL 09/01IO2 -- -- 500 ND ND ND ND ND - NO NO NO NO NO - -- -- -- -- -- NO ugIL 04/15/03 -- - 500 NO NO NO NO NO - NO NO NO NO NO - - - - -- -- NO ugIL 10/01I03 -- -- 500 ND ND ND ND ND - NO NO NO NO NO - -- -- -- -- -- NO ugIL 03/01IN - -- 500 NO NO NO NO NO - NO NO NO NO NO NO - NO - -- -- NO ugIL 09/01I04 -- -- 500 ND ND ND ND ND - NO NO NO NO NO - -- -- -- -- -- NO ugIL 05/01/05 - -- 500 NO NO NO NO NO - NO NO NO NO NO 600 - NO - -- -- NO ugIL 10/01/OS -- -- 500 NO NO NO NO NO - NO 560 NO NO NO - -- - - -- -- NO ugIL 04/01/O6 - -- -- - - - uglL 10/01106 -- -- 500 NO NO NO NO NO - NO NO NO NO NO - -- - - -- -- NO ugIL N112107 -- - -- 120 14.4 J 2135 6406.33 218 JJ 391 13 292 264 J 1 JJ 4.06 J D N-- ugIL 09Y28I0] 130 0.9 J 13. 2 18 B - B - 77.7 J 2.8 J 75.7 - - -- -- -- -- ugIL 04/2910 0.2 IN 07 J 4 9. .5 101 4 J J 532 NO ugIL 08 15I0 1 10 127 12.7 J 296 46.2 J 194 110 486 17.9 J J 86.8 J 878 NO ugIL 20 0 -- 100 - - - -- -- -- NO ug/L 04117109 4.2 -- 100 132 14.3 J 245 74.4 J NO - 71.6 J 37.1 J 13.9 J 10.2 J 87.6 J 488 -- - -- -- -- NO ugIL 10/16109 1.0 - 100 119 12.5 J 203 41.2 J 203 - 124 410 90.] J 10.2 J 79.2 J - -- -- -- -- NO ugIL 04/28I10 1.0 -- 100 112 17.1 J 309 63.1 J 183 - 89.0 J 339 21.] J 11.5 J 87.7 J 386 - -- NO ugIL 08/02110 1.0 - 100 - - - 144 228 170 NO ugIL 10I11I10 1.0 -- 100 8].9 J 15.8 J 225 40.9 J i8d - 116 358 14.8 J 9.15 J 74.3 J 473 - -- 140 301 164 NO ugIL 05I09/11 1.0 - 100 108 12.3 J 415 53.5 J 207 - 91.4 J 104 13.1 J 10.6 J 105 397 NO ugIL 10/12/i1 1.0 -- 100 115 17.4 J 429 45.2 J 191 - 106 431 26.8 J 9.50 J 115 430 202 78.6 114 78.4 J 128 NO ug/L 04117/12 1.0 - 100 112 14.1 J 329 80.1 J 198 - 89.6 J 105 22.48 J 9.45 J 123 396 NO ug/L f0125112 1.0 -- 100 104 18.1 J 422 55.7 J 187 - 84.6 J 394 8.92 J 94.4 J 118 448 169 90.6 J 128 180 134 NO ug/L 05I02113 1.0 - 100 120 20.5 J 253 57.3 J 218 88.4 J 26.1 J 21.9 9.59 J 131 341 167 91.8 J 11] 150 123 NO ugIL O9124113 1.0 -- 100 85.9 J id.8 J 355 55.0 J 192 186 71.5 J 328 42.7 J 9.31 J 122 396 157 93.8 J 125 181 140 NO ugIL 04/24114 1.0 - 100 98.] J 17.3 J 261 58.6 J 218 53.4 J 22.6 J 22.3 J 9.61 J 143 171 171 31.6 J 109 221 112 NO ugIL 10IOBI16 1.0 -- 100 88.3 J 18.5 J 446 53.8 J 197 182 94.0 J 382 159 11.2 J 142 384 156 f09 112 222 266 NO ugIL 04114115 1.0 - 100 105 19.7 J 376 62.1 J 265 216 109 90.1 J 71.97 J 9.99 J 116 179 110 108 333 139 NO ugIL 10IO7I15 1.0 -- 100 93.3 J 426 221 201 187 102 269 87.0 13A J 150 221 178 110 69.0 J NO 59.7 J NO It- 04I201i6 1.0 - 100 91.3 J 13.fi J 351 51.1 J 230 166 149 96.fi J 124 11.0 J 159 396 172 63.9 J NO 209 153 NO ugIL 09/2fi/16 1.0 -- 100 85.1 J 346 50.9 J 189 177 204 205 186 11.9 J id6 379 175 f08 114 219 182 NO ugIL 04/25117 1.0 - 100 96:6 J 14.] J 386 55.7 J 220 170 122 25.2 J 13.6 J 120 J 176 too 172 98.5 J 112 107 38.8 J NO ugIL 10/17/17 1.0 -- f00 94.1 J 426 51.6 J 202 193 IN 433 1" 21.2 J 170 273 163 109 98.4 J 303 166 NO ugIL 04/16118 1.0 100 82.7 J 26.5 J 415 55.5 J 214 192 76.4 J 135 21.3 J 28.2 J 190 191 163 94.0 J 114 .2 3fi.0 J NO ugIL 10/16118 1.1 10 -- 96.5 365 57.8 174 190 131 2" 21.6 25.9 167 194 67.8 56.0 117 119 55.8 NO ugIL N112119 1.1 10 -- 95.9 17.0 288 57.7 257 i66 101 46.0 18.3 28.4 180 104 177 78.9 233 351 53.2 NO ugIL 10/07119 1.1 10 -- 89.0 13.3 404 52.9 170 199 245 331 190 32.2 192 299 171 98.0 IN 418 126 NO ugIL 04/20I20 1.1 10 -- 98.9 16.8 312 68.3 188 160 124 148 55.9 WA 181 279 155 6 91.5 295 110 ND ugIL u IL 10/13120 04/28/21 1.1 1A 10 10 -- 112 88.6 12.5 10.7 375 317 81.2 90.1 1% 162 2. 127 71.5 72.4 183 59.2 32.2 34.9 35.0 38.0 195 192 125 233 175 171 98.4 63.3 Ile 93.7 275 430 72.2 88.9 ND NO Beryllium ugIL 03/01MI) -- -- 2 NO NO NO NO NO - NO NO NO NO NO NO - NO - - - ND IMAC=4 ugIL ugIL 09/01/99 -- - 2 NO NO NO NO NO - NO NO NO NO NO - -- -- -- NO EPA MCL=4 ugh ugIL 03101/00 -- -- 2 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- NO ugIL 09M IN - - 2 NO NO NO NO NO - NO NO NO NO NO - -- -- -- NO ugIL 03/01/01 -- -- 2 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO ugIL 09M 101 - - 2 NO NO NO NO NO - NO NO NO NO NO - - -- -- ND ugIL 03101/02 -- -- 2 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- - -- ND ugIL 09/01/02 - - 2 NO NO NO NO NO - NO NO NO NO NO - - - - - - ND ugIL 04/15103 -- -- 2 NO NO NO NO NO - NO NO NO NO NO -- -- - - -- -- ND ugIL 10/01/03 - - 2 NO NO NO NO NO - ND ND ND ND ND - - - -- ND ugIL 03101/04 -- -- 2 NO NO NO NO ND -- NO NO NO NO NO NO -- NO - -- -- NO ugIL 09/01/04 - - 2 NO NO NO NO NO - NO NO NO NO NO - - - - ND ugIL 05/01/05 -- -- 2 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - -- -- ND ugIL 10/01/05 - - 2 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO ugIL 04/01/06 -- -- -- - - - uglL 10/01/06 -- - 2 NO NO NO NO NO - NO NO NO NO NO - - - - -- -- NO ugIL 14112117 -- -- -- NO NO NO NO NO - NO NO NO NO NO -- - - -- -- -- NO ugIL 09/26/07 -- -- NO NO NO NO NO - NO - NO NO NO - - - -- -- -- NO ugIL 14119IN 0.7 -- 1 NO NO NO NO NO - NO NO NO NO NO NO - - -- -- -- NO ugIL 12/01/08 0.10 - 1 NO NO NO NO NO - NO NO NO NO NO NO - - -- -- -- NO ugIL 04/17109 0.08 -- 1 NO NO NO NO NO - NO NO NO NO NO 0.46 J - - -- -- -- NO ugIL 1011WH 0.10 - 1 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- NO ugIL 04/28/10 0.10 -- 1 NO NO NO NO NO - NO NO NO NO NO NO - - NO ugIL 08/021f0 0.10 - 1 - - -- NO NO NO NO ugIL 10/11110 0.10 -- 1 NO NO NO NO NO - NO NO NO NO NO NO - -- NO NO NO NO ugIL OM9111 0.10 - 1 NO NO NO NO NO - NO NO NO NO NO NO NO ugIL 10/12111 0.10 -- 1 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO ND ugIL 04/17/12 0.10 - 1 NO NO NO NO NO - NO NO NO NO NO NO NO ugIL 10/25/12 0.10 -- 1 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO NO ugIL 05/02/13 0.10 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/24/13 0.10 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL U4/24/14 0.10 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/06/14 0.10 -- 1 NO 0.102 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L W14/15 0.10 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/07/15 0.10 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL W20116 0.10 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO uW 09/26/16 0.10 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/25/17 0.13 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10117/17 0.13 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04I16/18 0.13 1 NO NO NO NO NO NO NO ND ND ND NO NO NO NO NO NO NO NO ug/L 10116/18 0.16 1.00 -- ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 041ID19 0.16 1.00 - NO NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 10I0]/19 0.16 1.00 -- ND ND NO ND NO NO ND ND ND ND ND ND ND NO NO NO NO NO ug/L 04120/20 0.16 1.00 - NO ND ND ND ND ND ND ND ND ND ND ND ND NO NO NO NO NO ugIL u /L 10I73I20 .412.121 0.16 0.18 1.W 1.. -- NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO NO R GGLG!■ 1of 12 August 2021 TABLE 4 S-q of Grondwater Monitoring Resits Detected Conetit0et0 White Street L-dfill - Phase 11, Permit No. 41413 Greensboro, North Caroline Method Practical SWS Auessmenl Oetedetl Monitoring Cons[nuent Reporting Sample Oete - DuamitMion Reporting Upgradient Monitoring W011e Comp110noe DowngradieM Monitoring Walla Monitorng Sentinel Monitorng Wells Blanka Units Date Limn Limit Limh MW-13 MW-1I 11.1 11.2 11.3 INA II.S II-fi II-] II-78 II.B II-12 Well IISB II4 8MW4 BMWJ SMWd Catlmium ugIL 03/01M9 -- -- 1 NO NO 3 NO NO - NO 3 NO NO NO NO - NO -- -- -- NO NC 2L=2 ugIL ugIL 09M IN - - 1 ND ND 2 NO NO - NO 2 NO NO 1 - - -- -- -- -- NO EPA MCL=Sug/L ugIL 03/0, 100 -- -- 1 NO NO 2 NO 4 - 2 NO NO NO NO NO - NO -- -- -- NO ugIL 09/01I00 -- - 1 NO NO 2 NO 1 - NO 2 NO NO NO - - -- -- -- -- NO ugIL 03I01I01 -- -- 1 NO NO 1.8 NO 5.) N. - NO NO NO NO NO NO - NO -- -- -- NO ugIL 09/01I01 -- - 1 NO NO 1.9 1.3 - 1.5 6.1 1.0 1.3 1.5 - - -- -- -- -- NO ugIL 03/01IO2 -- -- 1 NO NO 1.0 1.0 2.1 - 1.9 2.1 NO NO 1.0 NO - ND -- -- -- NO ugIL 09/01102 - - 1 NO NO NO NO NO - NO 4.5 NO NO NO - - -- -- -- -- NO ugIL 04/15103 -- 1 NO NO NO NO 2.0 - NO NO NO NO NO - - -- -- -- -- NO ugIL 10/01103 -- - 1 NO NO 1.1 NO 4.7 - NO 3.6 NO NO NO - -- -- -- NO ugIL 03/01I04 -- -- 1 NO 1.3 1.2 1.0 1.6 - 1.4 1.8 NO NO NO NO - ND -- -- -- NO ugIL 09/01I04 -- - 1 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ugIL OS/01I05 -- -- 1 NO NO ND NO NO - NO NO NO NO NO NO - NO -- -- -- NO ugIL 10/01105 -- - 1 NO NO NO NO NO - NO NO NO NO NO - - - -- -- -- NO ugIL 04101I06 -- -- -- - - uglL 10101I06 -- - 1 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ugIL 04/12/07 -- -- -- NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ugIL 09/26107 -- -- NO NO NO NO NO - NO - NO NO NO - - -- -- -- -- NO ugIL 04/29108 0.50 -- 1 NO NO NO NO NO - NO NO NO NO NO NO - -- -- -- -- NO ugIL 12I01I08 0.36 - 1 NO NO NO NO NO - NO NO NO NO NO NO - -- -- -- -- NO ugIL 04/17109 0.09 -- 1 NO 0.15 J 0.26 J 0.17 J 0.24 J - NO 0.26 J 0.14 J 0.21 J 0.26 J 0.27 J - -- -- -- -- NO ugIL 10116I09 0.36 - 1 NO NO NO NO NO - NO NO NO NO NO - -- -- -- -- NO ugIL 04/28/10 0.36 -- 1 NO NO NO NO NO - NO NO NO NO NO NO - -- NO ugIL 08/02110 0.36 - 1 - - -- 178 NO NO NO ugIL 10/11/10 0.36 - 1 NO NO NO NO NO - NO NO NO NO NO NO - -- 4.79 NO NO NO ugIL 05109Ill 0.36 - 1 NO NO NO NO NO - NO NO NO NO NO NO NO ugIL 10/12/11 0.36 - 1 NO NO NO NO NO - NO NO NO NO NO NO NO NO 3.52 NO NO NO ugIL 04/17112 0.36 - 1 NO NO NO NO NO - NO NO NO NO NO NO NO ugIL 10/25112 0.36 -- 1 NO NO NO NO NO - NO NO NO NO NO NO NO ND 162 NO ND NO ugIL 05/02/13 0.36 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO ND BA2 NO NO NO ugIL 09/24113 0.36 -- 1 NO NO NO NO NO NO NO NO NO NO NO 0..4 J NO NO 2.00 ND NO NO ugIL 04/24/14 0.36 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO 3.01 ND NO NO NO ugIL 10/06/14 0.36 -- 1 NO 0.842 J NO NO NO NO NO 0.43 J NO NO 0.502 J NO NO 1.62 NO NO NO NO ugIL 04/14/15 0.36 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO 4.92 NO NO NO ugIL 10/07/15 0.36 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO 3.45 NO NO NO ugIL 04/20/16 0.36 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/26/16 0.36 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO 0.375 NO NO NO NO ugIL 04/25117 0.36 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO 8.65 NO NO NO ugIL 10/17/17 0.36 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/16/18 0.36 1 NO NO NO NO NO NO NO NO NO NO NO NO NO 0.933 J 3.95 NO NO NO ugIL 10/16/18 0.36 1.00 - NO -- NO NO NO NO NO NO NO NO NO NO NO 0.557 J 6.02 ND NO NO ugIL 04/12119 0.36 1.00 -- NO NO NO NO NO NO NO NO NO NO NO NO NO 0.368 B 15.0 NO NO 0.361 ugIL 10/07/19 0.36 1.00 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/20/20 0.36 1.00 - NO NO NO NO NO NO NO NO NO NO NO 0.593 J NO 0.741 J 4.96 NO NO NO ugIL 10/13/20 0.36 1.00 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO 4.54 NO NO NO ug/L 04/28Y21 0.36 1.00 NO ND ND NO NO NO NO NO NO NO NO NO NO 0.548 J 7.70 NO NO ND Chromium ugIL 13111/99 - - 10 NO NO 47 NO NO -- NO NO NO NO NO NO -- NO - - - NO NC2L=10 ugIL ugIL 09M)l) - - 10 NO NO 20 NO NO -- NO NO NO NO NO -- - - - NO EPA MCL=100 ugIL ugIL 03/0,100 -- -- 10 NO NO 54 NO NO -- 12 NO NO NO NO NO -- NO - - - NO ugIL 09ffilmo - - 10 NO NO 21 NO NO -- NO NO NO NO NO -- - - - NO ugIL 03111101 -- -- 10 NO NO 32 NO NO -- NO NO NO NO NO NO -- NO -- - - NO ugIL 09M /01 - - 10 NO NO NO NO NO -- NO 10 NO NO NO -- - - - NO ugIL 03/0,102 -- -- 10 NO NO NO NO NO -- NO NO NO NO NO NO -- NO -- - - NO ug/L 09/01/02 - - 10 NO NO NO NO NO - NO NO NO NO NO -- - - - - - NO ugIL 04/15/03 -- -- 10 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO ugIL 10/01/03 - - 10 NO NO NO NO NO -- NO NO NO NO NO - - - - NO ugIL 03/01/04 -- -- 10 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO ugIL 09/01/04 - - 10 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ugIL 05/O1/05 - - 10 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO ugIL 10/01/05 - - 10 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO ugIL 0101/06 - - - -- -- -- -- ug/L 10/01/06 - - 10 NO NO NO NO NO -- NO NO NO NO NO -- - - - - - NO ug/L 04/12/07 - - - NO 3.0 J NO NO NO -- NO NO NO NO NO -- -- - - - - NO ugIL 09/26/07 - NO NO NO NO NO -- NO NO NO NO - - - - - NO ug/L 04J2nI08 2.0 - 10 NO 6.9 J NO NO NO -- NO 6.7 J NO NO NO NO -- - - - - NO ugIL 12/01/08 1.0 - 10 NO 3.3 J NO NO NO -- NO NO NO NO NO NO -- - - - - NO ugIL 12105/08 1.0 - 10 -- -- -- -- -- -- -- -- -- -- -- -- -- - - - - NO ugIL 04/17/09 0.7 - 10 NO 6.9 J 2.4 J 1.9 J 3.6 J -- 2.8 J 0.7 J 0.9 J 0.8 J 1.6 J 24.7 -- - - - - NO ugIL 10/16/09 1.0 -- 10 NO 3.55 J 3.69 J NO 2.29 J -- 1.51 J 3.77 J 5.25 J NO NO -- - - - - NO ug/L 04/28/10 1.0 - 10 NO 2.24 J 2.4 J NO 2.24 J - 1.93 J NO 1.05 J NO NO NO -- - NO ugIL O8/02/10 1.0 -- 16 -- -- -- -- -- -- -- -- -- -- -- -- -- - 2.06 J NO NO NO ugIL 10/11/10 1.0 - 10 NO 3.15 J NO NO 1.67 J -- NO NO NO 1.45 J NO NO - - 6.52 J 7.86 J NO NO ugIL O5/09Ill 1.0 -- 10 NO 4.26 J 4.93 J NO 1.87 J -- NO NO 1.04 J NO 1.42 J 1.17 J NO ug/L 10/12111 1.0 - 10 1.27 J 4.88 J 6.87 J 1.64 J 2.22 J -- 3.01 J 6.47 J 1.31 J NO 3.17 J 2.19 J 7.42 J 4.13 J 1.89 J 3.44 J 1.47 J NO ugIL 04/17/12 1.0 -- 10 NO 3.75 J 6.80 J 2.15 J 3.16 J -- 2.42 J 1.22 J 1.12 J NO 2.71 J 1.62 J NO ug/L 10/25/12 1.0 - 10 NO 2.23 J 2.85 J NO 2.15 J -- 1.13 J 3.16 J NO NO 1.04 J NO J NO 1.90 J 2.52 J NO NO NO ugIL O5/02/13 1.4 -- 16 1.74 J 2.19 J NO NO 5.55 J 2.02 J 1.59 J 2.82 J NO 2.51 J NO NO 2.39 J 3.75 J NO NO NO ug/L 09/24113 1.4 - 10 NO NO 2.92 J NO 3.99 J 2.03 J NO 1.49 J NO NO NO 3.97 J 2.63 J NO NO 3.98 J NO NO ugIL 04/24/14 1.4 -- 16 NO 1.51 J 2.28 J NO 2.77 J 1.60 J NO 2.09 J NO 2.63 J 3.34 J NO 2.35 J 1.88 J NO NO NO ugIL 10/OB/14 1.4 - 10 NO NO 4.79 J NO 1.57 J 1.94 J NO 3.92 J NO NO 1.71 J 2.17 J NO 2.67 J 4.16 J 1.83 J 1.93 J NO ugIL 04/14/15 1.4 -- 10 NO NO 3.88 J NO 7.10 J NO 1.83 J NO 1.60 J NO NO NO NO NO NO 2.83 J NO ugIL 10/07/15 1.4 - 10 NO 3.16 J 3.17 J NO NO 5.02 J 2.47 J NO NO 2.10 J 317 J NO NO 2.19 J NO 5.87 J NO ugIL 04/20/16 1.4 - 10 NO NO NO NO 3.14 J NO 1.82 J NO NO NO NO 5.50 J NO NO NO NO 9.98 J NO ugIL 09/26/16 1.4 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04I25(17 1.4 - 10 NO NO NO NO 2.04 J NO 8.77 J 2.76 J 1.91 J NO NO 5.21 J NO 2.13 J 9.36 J NO 3.26 J NO ugIL 10/17/17 1.4 - 10 NO 3.73 J NO 1.68 J 2.05 J 2.82 J 2.40 J NO NO 2.87 J NO 1.57 J 2.38 J 2.16 J NO 1.60 J NO ugIL M116/18 1.4 10 NO 1.91 J 2.34 J NO NO NO 2.71 J NO 1.40 J NO NO 2.08 J NO NO 2.63 J NO NO NO ugIL 10/16/18 1.4 10 - NO 3.37 J NO 3.00 J 2.66 J 2.27 J NO 2.14 J NO 3.53 J 1.60 J 2.15 J 2.39 J 3.11 J NO NO NO ugIL 04112(19 1.4 10 - NO NO 3.07 J NO 2.57 J 2.75 J 3.17 J NO 2.55 J NO 3.713 J 1.87 J 1.57 J NO 3.38 J NO NO NO ugIL 10/07/19 1.4 10 - NO NO 2.82 J NO 2.13 J 2.30 J 2.35 J 3.13 J NO NO 2.99 J NO NO NO NO NO NO NO ugIL 04I20/20 1.4 10 - NO NO 4.21 J NO 4.38 J NO 1.56 J NO ND ND NO 1.75 J NO NO NO NO NO NO ugIL u L 101IN20 04/28/21 1.4 1.4 10 10 -- 2.51 J NO NO 2.26 J 5.83 4.92 J 2.95 J J NO 3.71 2.24 J 3.13 J NO J 2.70 NO J 3.73 NO J 2.60 NO J 2.49 ND J 5.04 NO J 3.01 J NO 2.68 J NO 2.38 NO J 3.36 2.18 J 1.97 J NO J 2.26 J NO NO NO Cobalt ug/L 0301/99 - - 10 NO NO 38 NO 13 - 18 2] NO NO NO NO - NO - - - NO IMAC = 1 ugIL ugIL 0ii; 7"9 -- -- 10 NO NO 18 NO 10 -- NO 13 NO NO NO - -- - - - -- NO (NO EPA MCL) ugIL 03101/00 - - 10 NO NO 29 NO 45 -- 48 NO NO NO NO NO -- NO - - - NO ugIL 09101/00 -- -- 10 NO ND 41 NO 14 -- ND 12 NO NO ND -- -- - - - - NO ugIL 03/01/01 - - 10 NO NO 19 NO 34 -- NO NO NO NO NO NO -- NO - - - NO ugIL 09101/01 -- -- 10 NO NO 46 NO 28 -- 11 39 NO NO NO -- -- - - - - NO ugIL 03/01/02 - - 10 NO NO 10 NO 18 -- 1.2 15 NO NO NO NO -- NO - - - NO ugIL 09101/02 -- -- 10 NO NO 29 NO 10 -- ND 36 NO NO NO - - -- -- -- -- NO ugIL 04/15/03 - - 10 NO NO NO 14 61 - 33 NO NO NO NO - - - -- -- -- NO ugIL 10/01103 -- 10 NO NO 13 NO 39 - 13 29 NO NO NO - - -- -- -- -- NO ugIL 03/(11;(M -- - 10 NO NO 28 NO 72 - 15 20 NO NO NO NO - NO -- -- -- NO ugIL 09101I04 -- 10 NO NO 17 NO 25 - 11 15 NO NO NO - - -- -- -- -- NO ugIL 05/01I05 -- - 10 NO NO 24 NO 40 - NO 25 NO NO NO 33 - NO -- -- -- NO ugIL 10/01/OS -- 10 NO NO 60 NO 23 - 13 48 NO NO NO - - -- -- -- -- NO ugIL 04101I06 ugIL 10I01I08 -- -- 10 NO NO 72.3 NO 31.8 - 12.8 42.] NO NO NO -- - - - -- -- NO ugIL O4112/0] - - - NO NO 10.9 NO 28.8 - 12.3 24.5 NO NO NO - - - - - - NO ug - -- NO NO 62.0 2.0 21.7 -- 17.5 - NO NO NO -- - - - -- -- NO ug/L 04129/OB 2.0 -- 10 NO NO 4.3 J NO 2(1 - 2.1 J S. J NO NO NO 49.2 - - - - - NO ug/L 12I01/08 1.1 - 10 NO NO 51.4 NO 25.1 -- 4.4 J 42.4 1.3 J NO NO 22.4 - - - -- -- NO ugIL 121M/08 1.1 - 10 -- -- -- -- -- -- - -- - - - - NO ugIL 04I1 ]/09 0.6 -- 10 ND NO NO ND 21.6 -- 4.1 J 1.1 J NO NO NO 34.4 - -- -- -- -- NO ugIL 10/16IN 1.1 -- 10 NO NO 36.5 NO 25.2 - 20.1 3d.5 2.3 J NO NO - - - -- -- -- NO ugIL 04128110 1.1 -- 10 ND ND 26.4 ND 25.0 - 32.3 25.8 2.11 J NO 1.48 J 8.21 J - -- NO ugIL OS/02I10 1.1 -- 10 - - - - -- 15.5 3.12 J 4.55 J ND uglL 10/11/10 1A - 10 NO NO 35.8 NO 16.1 - 23.2 27.7 NO NO NO 6.73 J - -- 7.34 J 13.0 1A NO ug/L MINI 1.1 -- 10 NO NO 22.4 NO 21.2 - 5.8fi J 4.91 J NO NO NO 8.1fi J NO ugIL 10/12111 1A - 10 NO NO 59.4 NO 18.5 J 40.7 NO NO 1.88 J 4.74 J 7.05 J 6.38 J 7.7 J 1.45 J 5.50 J NO ug/L 04/17/12 1.1 -- 10 NO NO 23.1 NO 14.1 - 7.28 J 6.23 J NO NO 1.]] J 6.20 J NO ugIL 10Y25/12 1A - 10 NO NO 40.2 NO 14.6 - 1.33 J 35.3 NO NO 1.25 J 1.85 J 2.31 J 4.48 J 10.3 1.92 J NO NO ug/L 05/02113 1.1 -- 10 NO NO 17.0 NO 17.1 6.58 J NO NO NO NO d.88 J 1.]0 J 2.5] J 1.10 2.39 J NO NO ugIL 09 4/13 1A - 10 ND ND 45.1 ND 14.0 4.20 J 6.64 J 23.1 2.56 J NO 2.32 J 6.01 J 3.04 J 4.31 J 16.6 4.2] J 6.75 J ND ug/L 04/24/14 1.1 -- 10 NO NO 20.5 NO 14.4 - 6.06 J ND NO NO 1.71 J 6.81 J 2.66 J 11.4 1.72 J 2.50 J 1.48 J NO ugIL 10/O6/14 1.1 - 10 NO NO 58.5 NO 12.3 1.33 J 11.0 29.3 1.63 J NO 1.87 J 1.65 J 1.42 J 4.61 J 11.2 2.76 J 4.22 J NO ugIL O4/14/15 1.1 -- 10 NO NO 26.8 NO 18.5 1.82 J 12.2 59 J NO NO 2.03 J 2.09 J 3.32 J 20.11 3.40 J 1.10 J NO ugIL 1.711: 1.1 - 10 NO - 42.7 9.65 J 12.9 NO 3.46 J 21.2 3.51 NO 1.75 J 9.65 J 2.22 J 6.64 J 19.9 2.01 J NO NO ugIL 04/20/16 1.1 -- 10 NO NO 35.5 NO 11.2 NO 16.4 5.)) J NO NO 2.42 J ].80 J 1.42 J 18.7 30.7 2.10 J 1.n J NO ugIL 09/26116 1.1 - 10 NO -- 50.2 NO 10.6 NO 15.4 26.2 1.60 J NO 2.29 J 3.05 J 1.35 J 3.97 43.4 2.88 J 1.50 J ND ugIL 04/25/17 1.1 - 10 NO NO 20.3 NO 12./ NO 4.75 J NO NO NO 3.30 J 4.19 J 1./1 J 2.71 J 2.39 J 1.39 J NO NO ugIL 10/17/17 1.1 -- 10 NO - de.6 1.39 J 9.06 J NO 15.1 33.8 2.57 J NO 4.20 J 1- J 4A1 J 4.63 J 21.4 3.30 J 2.08 J NO ugIL 04/16/18 1.1 - 10 NO 1.0 J 29.9 NO 10.6 NO 6.18 J 12.9 NO NO 4.20 J 8.52 J 2.82 J 2.26 J 16.2 4.16 J NO NO ugIL 10/16/18 1.4 10 -- NO - 20.2 NO 7.50 J NO 8.87 J 21.5 NO NO 4.19 J 2.00 J 3.16 J 1.49 J 14.0 2.3] J NO NO ugIL 04/12119 1A 10 - NO NO 27.3 NO 12.1 NO 3.65 J NO NO NO 6.20 J 3.1l J 2.]] J 5.42 J 8M J 3.16 J NO NO ugIL 10/07/19 1A 10 - NO NO 36.8 NO 6.09 J NO 20.6 1].1 2.51 J NO 4.Sfi J 3.Sd J 1.72 J 3.11 J 68.3 3.30 J NO NO ug/L W20120 1A 10 - NO NO 21.0 NO 5.62 J NO 8.99 J 'it NO NO 4.17 J 2.19 J 1.62 J NO 24.8 1.55 J NO NO ugIL 10/13/20 to 10 - NO NO 23.6 NO 5.70 J NO 4.12 J 10.1 NO NO 6.6) J ].33 J 1.88 J 6.11 J 30.3 1.73 J NO NO ugIL 04/28/21 1A 10 NO NO 26.3 NO 10.3 NO 4.32 J 2.06 J NO NO 8.50 J 5.31 J 1.47 J NO 20.0 3.06 J ND ND Copper ug/L 03I01/99 -- - 200 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO NC 2L=1000 ugIL ugIL 09/01/99 - - 200 NO NO NO NO NO -- NO NO NO NO ND -- - - - NO EPA MCL=1300 ugIL ug/L 03101/00 -- - 200 NO NO 220 NO NO -- 360 NO NO NO ND NO -- NO - - - NO ugIL N101100 - - 200 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ug/L 03101/01 -- - 200 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO ugIL 09/01/01 - - 200 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ugIL 03101/02 -- - 200 NO NO NO NO NO -- NO NO NO ND NO NO -- NO -- - -- NO ugIL 09/01/02 - - 200 NO NO NO NO NO -- ND NO NO NO NO - -- - - - - NO ugIL 04115/03 -- - 200 NO NO ND NO NO -- ND NO NO NO ND -- -- - -- - - NO ugIL 10/01/03 - - 200 NO NO NO NO NO -- NO NO NO NO NO - - - - - NO ugIL 03I01104 -- - 200 NO NO NO NO NO -- NO NO NO NO NO NO -- NO -- -- -- NO ugIL 09/01/04 - - 200 NO NO NO NO NO -- NO NO NO NO NO - - - - - NO ugIL 00101/05 -- - 200 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - -- -- NO ugIL - - 200 NO NO NO ND NO - NO NO NO NO NO - - - - - - NO ug/L 04/01/OS 04I07I06 -- -- - - - - ugIL 10101/06 - - 200 NO NO NO NO NO -- NO NO NO NO NO - -- - - - - NO ugIL 04112/07 - -- - 1.2 J 0.6 5.3 J 2.0 J 0.6 J -- 0.6 0.6 0.6 J 0.6 0.7 J -- -- - - - - NO ugIL 09/26/07 - O.fi 1.0 B NO 2.2 B NO -- NO 0., B NO 2.0 B -- - - - - ug/L 04/29/08 0.6 - 10 4.0 J 2.8 J 8.0 J NO NO -- 4.4 J 7.7 J 4.1 J 2.9 J 2.5 J NO -- - - - - NO ugIL 12/01/08 1.6 - 10 NO NO 3.3 J NO NO -- NO NO 1.8 J NO NO NO -- - - - - NO ugIL N117/09 0.81 -- 10 NO NO NO NO 3.4 J -- 1.31 J 1.7 J NO 2.17 J NO 13.9 -- - - - - NO ugIL 10/16/09 1.6 - 10 NO NO 4.76 J NO 2.31 J -- NO NO 3.91 J 1.95 J NO -- - - - - NO ugIL 04128/10 7.6 -- 10 NO NO 4.05 J NO 3.42 J -- NO 3.86 J 1.88 J NO NO NO -- - ND ugIL 08/02110 1.8 - 10 -- -- -- -- -- -- -- -- - 11.9 1.66 J NO NO ugIL 10/11/10 1.6 - 10 ND NO 75.4 ND 203 J -- NO NO 7.76 J 7.6] J ND ND -- - 18.1 72.0 2.35 J NO ugIL OS/09/11 1.6 - 10 NO NO 1].3 NO 1.79 J -- 2.89 J 2.46 J NO 1.81 J NO NO NO ugIL 10/12/11 1.6 - 10 NO NO 9.93 B NO NO -- 7.96 J ND ND ZIA J ND ND 2.62 J 9.54 9.63 J 7.38 J NO NO ugIL W17112 1.6 - 10 NO NO 6.67 J NO 2.84 J -- 1.75 J 2.92 J NO 2.02 J NO NO NO ugIL 10/25/12 1.6 - 10 NO NO 21.6 NO NO -- 2.46 J NO 1.64 J NO NO NO NO 6.12 J 5.37 J NO NO NO ugIL 05/02/13 1.6 - 10 NO NO 7.45 J NO NO NO 1.62 J NO NO NO NO NO 1.79 J 11.1 NO NO NO ugIL 09124/13 1.6 - 10 NO NO 8.78 J NO NO NO NO NO NO 1.69 J NO 1.61 J NO NO 2.56 J NO NO NO ugIL 04I24114 1.6 - 10 1.87 J 2.24 J 8.55 J NO 2.14 J 4.30 J 2.62 J 2.07 J 3.98 J 2.51 J 2.20 J NO 72.7 6.18 J 3.40 J NO NO ugIL 10106/14 1.6 -- 10 NO NO 14A NO NO NO NO NO NO NO ND NO NO 28.2 1.77 J 4.50 J NO NO ugIL 04/14(15 1.6 - 10 NO NO 6.09 J NO 5.46 J NO 3.31 J 3.18 J 5.89 J 3.95 J NO NO NO 10.9 5.25 J 1.60 NO ugIL 10107/15 1.6 -- 10 ND 13.3 ND NO NO 3.17 J Ii J NO NO NO NO ND NO 12.9 NO NO NO ugIL 04/20/16 1.6 - 10 NO NO NO NO 3.1g J NO NO 2.82 J NO 2.00 J 2.04 J 4.03 J NO 2].0 7.69 J 2.49 J 1.60 NO ugIL 09126/16 1.6 -- 10 3.10 J 5.98 J 3.27 J 2.63 J 3.37 J 2.97 J 4.37 J 5.13 J 3.95 J 8.28 J NO 3.04 J 4.47 4.68 J 3.04 J 3.14 J NO ugIL 04125/17 1.6 - 10 2.85 B NO 26.9 NO NO NO 5.38 B 24.4 NO 1.94 B 8.19 B 10.2 NO 5.25 B 14.8 8.76 B 2.56 B 2.00 J ug/L 1017 ]/i] 1.6 -- 10 NO 18.1 NO NO NO NO NO ND NO 3.37 J NO NO 2.85 J 2.37 J NO NO NO ug/L 04I18/18 1.8 - 10 NO NO 14.4 NO NO NO 2.48 J ND NO ND NO ND ND NO 12.3 NO NO NO ugIL 10I76I18 1.6 10 -- NO 19.7 NO 3.24 J 3.43 J NO 5.86 J NO NO 10.9 NO 3.60 J 12.8 18.2 1.89 J NO NO ugIL 0412/19 1.6 10 -- NO NO 4.04 J NO 2.20 J NO 2.49 J 86.0 1.]5 J 2.69 J 12.2 4.16 J NO 4.02 J 14.9 NO NO NO ugIL 10107119 1.6 10 -- NO NO 10.9 NO 1.98 J NO NO 3.27 J 3.42 J NO 10.1 NO NO 1.92 J 2.78 J NO NO NO ugIL 04/20/20 1.6 10 - ND ND 14.8 2.86 J 2.44 J 2.78 J 2.24 J 24.6 2.18 J 1.91 J 10.5 ND ND 3.20 J 2.76 J 2.39 J 1.82 J NO ugIL u g. 10I13I20 04/28121 1.6 1.6 10 10 -- 3.46 J NO 1.64 J NO 9.16 NO J 2.78 J NO 5.74 NO J NO NO 4.39 NO J 3.14 10.3 J 3.64 NO J NO NO NO NO 4.80 J NO 7.86 J NO NO NO 11.3 2.89 NO J NO 3.54 J NO NO NO R GGLG!■ 2of 12 August 2021 TABLE 4 S-q of Grondwater Monitoring Re.lt, Detected C... ti-ft White Street Landfill - Phase 11, Permit No. 41413 Greensboro, North Caroline Method Practical SWS AuessmeM Detected Monitoring Con.thuent Reporting Sample Detection DuaMitMion Reporting Upgradient Monitoring W.IIS Compllance Do -gradient Monitoring Walla Monitorng Sentinel Monitorng Well. Blank. Unit. Date Limn Limit Limk MW-13 MW-14 11.1 11.2 11.3 11 A 11.6 11.6 II-] II-]B 11.8 II-12 Well IISB 114 SMW4 SMW-3 SMW4 Lead ug/L W/01 NJ9 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- NO NC 2L=15 ug/L u9IL 09/01/99 - - 10 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO EPA MCL=15 ug/L u9IL 03101/00 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO u9IL 09M IN - - 10 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO u9IL 03I01/01 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- - NO u9IL 09/01/01 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - NO u9IL 03I01/02 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- ND u9IL 09/01/02 - - 10 NO NO NO NO NO - NO NO NO NO NO - -- - - - - ND u9/L 04Il W03 -- -- 10 NO NO NO NO NO - NO NO NO NO NO - -- -- -- -- -- NO uglL 10/01/03 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - NO u9IL OW01/04 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- - -- NO uglL 09/01/04 - - 10 NO NO NO NO NO - NO NO NO NO NO -- - - - NO u9IL 0&01/OS -- -- 10 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO u,, 10/01/05 - - 10 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO uglL 0410110 -- -- - -- -- -- uglL 10/01/06 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO u9IL 04111J07 -- -- -- NO NO NO NO NO - NO NO NO NO NO -- -- - - - - NO uglL 09/28/07 - NO NO NO NO NO -- NO NO NO NO -- - - - - NO u9IL 04/29/08 2.0 -- 10 NO NO NO NO NO -- NO NO NO NO NO NO -- - - - - NO ug/L 12101/08 1.9 - 10 NO NO NO NO NO -- NO NO NO NO NO 5.3 J -- - - - - NO uglL 12/0&08 1.9 -- 10 NO uglL 04/17M9 1.6 - 10 NO NO 1.] J 3.2 J 3.3 J -- 2.5 J NO NO NO 3.1 J 10.5 -- - - - - NO uglL 1011&09 1.9 - 10 NO NO 17.2 NO NO - NO NO 5.37 J NO NO - - - -- -- NO uglL 04/28/10 1.9 - 10 NO NO NO NO NO - NO 2Al J NO NO NO NO -- - NO u9IL 08/02J10 1.9 -- 10 - - - NO NO NO NO uglL 10/11/10 1.9 - 10 NO NO NO NO NO - NO NO NO NO NO NO - - 3.42 J NO NO NO u9IL 05M 111 1.9 -- 10 NO NO NO NO NO - NO NO NO NO NO NO NO uglL 10/12/11 1.9 - 10 NO NO NO NO NO -- 1.90 NO 1.90 1.90 NO NO NO 2.37 NO NO NO NO ugI D4/17/12 1.9 -- 10 NO NO 3.]i J NO 2.28 J -- NO NO NO NO NO NO NO uglL 10/2&12 1.9 - 10 NO 2.64 J 3.4] J NO 4.26 J - 2.11 J NO NO NO NO 3.18 J NO 2.97 J 4.22 J 3.94 J 3.63 J NO u9IL 05/02/13 1.9 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug& 09/24/13 2.1 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 04/24/14 2.1 - 10 NO NO 4.05 J NO 2.70 J 2.81 J NO NO NO NO 3.49 J NO NO NO NO NO NO uglL 10/06114 2.1 - 1D NO NO NO NO NO NO NO NO NO NO NO NO NO 2.52 J NO NO NO NO uW M114/15 3.1 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 10/07/15 3.1 - 10 NO NO NO NO 4.86 J NO 4.05 J NO NO NO NO NO 4.51 J NO NO NO NO u9IL 04120/16 3.1 -- 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ug/L 0912&16 3.1 - 10 NO NO NO NO NO NO NO NO NO NO NO 3.52 J NO NO NO NO NO ug/L 04125/17 3.1 -- 10 NO NO NO NO ND ND ND ND ND NO ND ND NO NO NO NO NO NO ug/L 10117/17 3.1 - 10 NO NO NO ND ND ND ND ND NO ND ND NO NO NO 3.11 J NO NO ug/L 04/1&18 3.1 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugd. 1 01 6118 3.1 10 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 04112119 3.1 10 -- NO NO NO NO NO NO NO 6.04 J NO NO NO NO 4.86 J NO NO NO NO NO u9IL 10/07119 3.1 10 - ND 3.13 J ].68 J 3.24 J 4.46 J 5.35 J 4.28 J 6.44 J NO 3.93 J NO NO NO 4.48 J NO NO 4.92 J NO ug& 04/20120 3.1 10 -- ND ND ND ND ND ND ND ND ND ND 4.90 J NO NO NO NO NO NO NO u9IL u IL 10/13120 04/28121 3.1 3.1 10 10 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO Nickel u9I1- 03/01/99 - -- 50 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO NC 2L= 100 u9IL uglL 09/01199 -- -- 50 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO (NO EPA MCL) u9IL 03/011M -- -- 50 NO NO NO NO NO - 97 NO NO NO NO NO - NO -- -- -- NO u91 09/01100 -- -- 50 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ug/L 03/01/01 -- -- 50 NO NO NO NO NO - ND NO NO NO NO NO - NO -- -- -- NO uglL 09/01101 -- -- 50 ND NO NO NO ND - ND NO NO NO NO - - -- -- -- -- NO u9IL 03/01/02 -- -- 50 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO uglL 09/01/02 -- -- 50 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO u9IL 04/113/03 -- -- 50 NO NO NO NO NO - NO NO NO NO NO - - - -- - - ND uglL 10/01/03 -- -- 50 NO NO NO NO NO - NO NO NO NO NO - -- - - NO u,, 03/01/04 -- -- 50 NO ND ND ND ND - NO NO NO NO NO NO - ND -- - - NO uglL 50 NO NO NO NO NO - NO NO NO NO NO - -- - - NO u9IL 0&01/05 -- -- 50 NO ND ND ND ND - NO NO NO NO NO NO -- NO -- - - NO ug/L 10/ im -- -- 50 NO NO NO NO NO - NO NO NO NO NO -- -- - - - - NO uglL 04/01/06 -- -- - - - - uglL 10/01/06 -- -- 50 NO NO NO NO NO - NO NO NO NO NO -- - - - - - NO ul, 04/12/07 -- -- -- NO NO 6.9 J NO 6.9 J - 6 J J NO 69 J NO uglLL 09/26/07 NO NO . 59 J NO 4.3 J 4.2 J 2.5 J NO 8.4 J N D u9 04Y29108 2.0 -- 50 NO NO 6.7 J NO 9.5 J - NO 6.] J NO NO NO 15.0 J - - - - -- ND uglL 12/01108 1.8 -- 50 NO NO 7.5 J NO 10.3 J - 2.1 J 33.9 J NO NO 9.1 J 8.2 J - - - - -- NO uglL 12N&O8 1.8 -- 50 - - - - - -- NO uglL 04/11109 0.6 -- 50 1.1 J NO 10.] J NO 13.6 J - 3.0 J 2.1 J 1.3 J 0.8 J 11.6 J 22.8 J - - - - -- NO ugll- 101161N 1.8 -- 50 NO NO 9.15 J NO 11.6 J - 3.42 J 40.3 J 4.46 J NO 9.71 J - - - - - NO uglL 04/28110 1A -- 50 NO NO 13.2 J NO 11.2 J - 3.86 J 36.6 J 1.96 J NO 12.0 J 10.7 J - - NO uglL 08102110 1.8 -- 50 - - -- 1 J NO 4..28 J NO ugl 10/11110 1.8 50 NO NO 96 11] 1 3...6]6 J 5.5] J 4.15 NO uglL 05/09/11 1.8 50 NO NO 202 J NO 14.2 3 J 9.4 J NO NO J 12 J NO uglL 1012111 1A 50 ND ND 18.5 J ND J 3.80 J 3. 1.80 1.80 20.0 J 10.J 8.29 J 3.25 2.89 J 2.17 J 3.3 NO ugll- U117112 1.8 50 NO NO 16.7 J NO 1.4 10 J 5.40 J 9.0 J NO NO 227 J 8.5J NO ug/L 10/25112 1.8 2 1 J 4.38 J NO 34 J 1.80 2.98JND u9I 5/02I13 1.8 50 194 J NO 15.0 J NO 3 125 J 3.53 J 2.41 J 2.06 J NO 30.7 91. J .]J 4.89 J 1.92 J 509 J NO 4.0 NO uglL 01/24Ill 1.8 50 NO NO 20.8 J NO J 2.37 J 41.1 JND NO 28.9 J 10.J 5.33 J NO 341 J 2.16 J 5.19 J NO u9IL U124/14 1.8 50 NO NO 14.5 J NO 13.6 J 2.82 J 2.06 J 2 J NO 37.1 J 6 J 89 J 3.]9 J NO 589 JND u9ILL 10/O6114 1.8 ND NO 26.2 J NO 11.] J 29 J 2" J 4.01 J NO 37.7 J 6.91 J 3.6J 2.62J 2.4 J NO 9.65 J NO ug 1.8 50 NO 33J 24.9 J NO 16.0 J 21 3U114115 J N 5.67 JND uglLL 10/0]115 1.8 50 NO 23].91 J 3.06 J 2.1 13 J 334 J 2.87 J 32. J 4.65 NO 44 J 3.06 J 3.75 J 2.53 J 4.16 JND NO N ug 020/16 2.2 50 NO NO 2 JND J 33.5 J 6.]3 J ].2 J 5.39 J NO 13.J 6.]0 J 10.4 J518J N 6J NDD uglL 09/26/16 2.2 50 NO 28.1 N J D 5 J 8.05 J 515 66 J NO 8.J 5]4 J 3.4 6.4] J ND ]. 49 J NO L 0/2Wi] 2.2 J 3 J12 . NO 50] J NO NO NO u9ILL 10/17/17 2.2 50 626 J 25.5 J NO .94 11 J 36.9 J 5.83 J 50.9 4.20 J 9.12 6 J .6 NO 276 J NO 4. 11 J NO 3.98 J NO ug 0/1&18 2.2 50 NO NO 30.6 J NO J 68.6 J 4.78 J 9.14 J NO NO 22 5.6J 3.1] 2.2 J 4.25 J NO NO NO u9ILL 1&1&18 2.2 10 - NO 29.0 NO 9.47 J 56.06 542 J 22.3 NO NO 78.9 318 JND 253 J 22.1 2.6J NO NO 04/12/19 2.2 NO NO 25A NO 9.59 B 5 640 B 2.25 B NO NO %.2 B .6B 41 B 6 ND 2 ]8 ugl 10/07/19 2.2 NO NO 8 9 ].45 38 59 8.5 J 4] NO 3J NO g/L 0/20/20 2.2 NO NO 24.6 NO 21 J 42.2 3.96 J 12.5 NO NO 98.5 10.1 2.51 J NO NO NO 2.88 J NO uglL 10/13/20 2.2 10 - NO NO 29.9 NO 7.89 J 32.1 2.35 J 21.9 NO NO 129 4.41 J 3.64 J NO 5.98 J NO 3.20 J NO u L Od/28/21 2.2 10 NO NO 26.9 NO 8.30 J 39.1 3.23 J 4.07 J NO NO 122 10.9 2.% J 2.28 J 3.61 J NO 3.93 J NO Selenium uglL 0&01/99 - - 20 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO NC 2L=20 u9IL u9IL 09/o N9 - - 20 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO EPA MCL=50 u9IL uglL 0&01/00 - - 20 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO u9IL 09/01/00 - - 20 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ug/L 03/01/01 - - 20 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO ug/L D9/01/01 - - 20 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ug/L 03/01M2 - - 20 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO uglL 09/01/02 -- - 20 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO ug/L 04/15/03 - - 20 NO NO NO NO NO -- NO NO NO NO NO - -- - - - - NO uglL 10/01/03 -- - 20 NO NO NO NO NO -- NO NO NO ND ND -- - - -- NO ug/L 03101/04 - - 20 NO NO NO NO NO -- ND ND ND ND ND ND - NO - - - NO ug/L 09/01/04 -- - 20 NO NO NO ND ND -- ND ND ND ND ND -- -- - - -- -- NO ug/L 05101/05 - - 20 NO NO NO NO NO - NO NO NO NO NO ND - NO - - - NO ug/L 10/01/05 -- 20 NO NO NO NO ND -- ND ND NO NO NO -- -- - - -- -- NO ug/L 04101/06 - - - - - -- -- -- -- -- uglL 10/01/06 -- - 20 NO NO NO NO NO -- NO NO NO NO ND -- -- - - - - NO ug/L 04112/07 - - - NO NO NO NO NO -- NO ND 4.0 J 3.4 J NO - -- - - - - NO ug/L 09126/07 -- NO NO NO NO ND -- ND NO NO ND -- - - - - NO ug/L 04129/08 2.0 - 10 ND ND ND ND ND -- ND ND ND ND ND ND - - - - - NO ug/L 12101/08 2.] -- f0 NO NO NO NO ND -- ND NO NO ND ND ND -- - - - - NO u9IL 04117/09 3.4 - 10 ND ND ND ND ND -- NO NO NO ND ND 38 J - - - - - NO ug/L 10116/09 2.7 -- f0 ND NO NO NO NO -- ND 6.5 J NO NO ND - - - - - NO ug/L 04128/10 0.83 - 10 NO NO 16.1 J 5.04 J 4.18 J - 2.5] J 1].3 2.09 J NO 17.0 3A9 J - - NO ug/L 08/02/10 0.83 -- f0 -- -- -- -- - ND ND 9.41 J NO u9IL 10111/10 0.83 - 10 1.31 J NO 9.61 J 4.2] J 4.02 J - 2.54 J 11.6 NO NO 10.2 3.63 J - - - - - NO u9IL 05/09/11 0.83 - 10 1.0] J ND 29.9 6.46 J 6.00 J -- 1.91 J 4.]6 J 1.08 J 1.10 J 24.] 3.38 J NO ug/L 10/12/11 2.] - 10 NO 2.80 J NO ND NO - 2.39 J NO 0.926 J 0.83 NO 3.11 J 3.59 J 1.95 NO NO 3.5] J NO ug/L 04I1]I12 0.83 -- f0 NO NO ND ND NO - NO NO NO NO NO NO NO ug/L 10/25/12 0.83 - 10 NO NO NO NO NO - ND NO NO NO NO NO NO NO NO NO NO NO ug11 05I02113 0.91 -- 10 NO NO ND NO ND NO NO ND ND NO ND ND NO NO NO NO NO ugd. 09/24/13 0.91 - 10 NO NO 1.23 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 04/24114 0.91 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug& 10/06114 0.91 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 04/14115 0.91 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL lom 115 0.91 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 04/20/16 0.91 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 09/26/16 0.91 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04125/17 6.2 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO uglL 1017117 6.2 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 04/16118 6.2 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 10/1&18 6.2 10 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 04/12/19 6.2 10 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO 10.0 ug/L 10/07/19 6.2 10 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/20120 6.2 10 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO uglL u L 10/13/20 04128/21 6.2 6.2 10 10 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND Silver ug/L 03/01/99 - - 10 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO NC 2L=20 ug/L u9IL 09101/99 -- - 70 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO EPA MCL=100 ugIL ug/L 03/01/00 - - 10 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO ug/L 09101/00 -- - 70 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ug/L 03/01/01 - - 10 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO u9IL o9ro1/01 -- - 10 NO NO NO NO NO -- ND NO NO ND NO -- - - - NO ug/L 03/01/02 - - 10 NO NO NO NO NO -- NO NO NO NO NO NO - NO - - - NO u9IL o9MV02 -- - 10 ND NO NO NO NO -- NO NO NO NO NO -- -- - - -- -- NO ug/L 04/15/03 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO u9IL 10I01I03 -- -- 10 NO NO NO NO NO -- NO NO NO NO NO -- -- - - -- -- NO u9IL 03/01/04 - - 10 NO NO NO NO NO - NO NO NO NO ND NO - NO - - - NO ug/L o9101104 -- -- 10 ND NO NO NO NO -- NO ND ND NO ND -- - -- - -- -- NO ug/L 05I0= - - 10 NO NO ND ND ND - ND NO NO NO NO NO - NO - -- -- NO ug/L 10I01I05 -- -- 10 ND ND ND ND ND - NO NO NO NO NO -- -- -- -- -- -- NO ug11 04I01106 - - - - - - - - - ug/L 10/01/06 -- -- 10 ND NO NO ND NO -- NO NO NO NO NO -- -- - - -- -- NO ug/L 04112/07 - - - NO NO NO NO NO - NO NO NO NO NO - - - - -- -- NO ug/L 09/26/0] - -- - NO ND 2.5 J NO NO -- NO -- NO NO 2.6 J - -- - -- -- -- NO ugd. 04/29/08 2.0 -- 10 2.] J 26 J 2.7 J ND NO - NO NO 2.] J 2.1 J 2.9 J ND - - -- -- -- NO ug/L 12101108 1.9 -- 10 NO NO NO NO NO - NO NO 2.3 J NO NO NO - - -- -- -- NO ugd. 04/17/09 1.0 -- 10 NO NO 3.6 J 1.6 J NO - NO NO NO NO 3.9 J NO - - -- -- -- NO ug/L 10116109 1.9 -- 10 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- NO ugd. 04/2W10 1.9 -- 10 NO NO 4.47 ND NO - NO 4.32 J NO NO 3.0] J 2.W J - - NO ug/L 08102110 1.9 -- 10 -- -- - -- -- -- -- -- -- -- - - - - NO NO NO NO ug& 10/11/10 1.9 -- 10 NO NO 3.2] J NO NO - NO NO NO NO 3.25 J NO - -- NO NO 5.30 NO ug/L 05109111 1.9 -- 10 NO NO 2.84 J NO NO - NO NO NO NO 2.28 J NO NO ugd. 10/12/11 1.9 - 10 NO NO 2.91 J NO NO - NO 3.63 J NO NO NO 3.50 J NO NO NO NO NO NO ug/L 0411]l12 1.9 -- 10 NO NO 2.68 J NO NO - NO NO NO NO NO NO NO uglL 10/25112 1.9 - 10 NO NO 3.09 J NO NO - NO 3.04 J NO NO NO 2.72 J NO NO NO NO NO NO ug/L 05/02/13 1.9 -- 10 NO NO 2.2 J NO NO NO NO NO NO 2.11 J NO NO NO NO NO NO NO ugll- 09/24/13 1.9 -- 10 NO NO 2.71 J NO NO NO NO 2.61 J NO NO NO NO NO NO NO NO NO NO uglL 04/24114 1.9 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO 2.43 J NO NO NO NO u9IL 10/06/14 1.9 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO uglL 04/14/15 1.9 -- 10 NO NO 3.24 J NO NO NO NO NO NO NO 2.51 J ND NO ND ND ND ND uglL 10/07/15 1.9 - 10 2.79 J 7.83 J NO NO NO NO NO NO NO 5.84 J NO NO NO NO NO NO NO ug/ D4/20/16 1.9 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO uglL 09/28/16 1.9 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 0 5117 1.9 - 10 NO NO NO NO NO NO NO NO NO NO 2.79 J NO NO NO NO NO NO NO ug/L 10/17/17 1.9 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL D4/16/18 1.9 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 10/16118 1.9 10 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L Wl W19 1.9 10 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO uglL 10/07/19 1.9 10 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04I20/20 1.9 10 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL u L lo/lm0 0412&21 1.9 1.9 10 10 - ND ND ND ND ND ND ND ND ND ND NO ND NO ND NO ND NO ND NO ND NO NO NO ND NO ND NO NO NO NO NO NO NO NO NO NO GGaI.D!■ 3of 12 August 2021 TABLE 4 S-q of Grondwater Monitoring Resits Detected Conatiteete White Street L-dfill - Phase 11, Permit No. 61413 Greensboro, North Caroline Method Practical SWS Auessmenl Oetedetl Monitoring Cons[nuent Reporting Sample Oete - DuamitMion Reporting Upgradient Monitoring Welle Compllanoe Do -gradient Monitoring Walla Monitorng Sentinel Monitorng Wells Blanks Units Date Limn Limit Limn MW-13 MW-1I 11.1 11.2 II-S INA 11.5 II-fi II-] II-78 II.B II-12 Well IISB II4 8MW4 8MW-3 BMWd Thallium u9IL 03I01NJ9 -- -- 10 NO NO ND NO NO - 14 29 NO NO NO NO - ND -- -- -- ND IMAC=0.2 ug/L u9IL 09/01/99 - - 10 ND ND ND ND NO - ND ND NO NO NO - - - -- ND EPA MCL=2 u9IL u9IL 0310,/00 -- -- 10 NO NO NO NO NO - NO NO ND ND NO ND -- ND -- -- - ND u9IL 09/01/00 - - 10 NO ND NO ND ND - ND ND ND NO NO - - - - NO u9IL 03/01/01 -- -- 10 NO NO NO NO NO - NO ND NO NO NO NO -- NO -- -- - NO u9IL 09/01/01 - - 10 ND ND ND ND ND - NO ND NO NO NO - - - - NO u9IL 03/01/02 -- -- 10 NO NO NO ND NO -- NO NO NO NO NO NO -- NO -- -- -- NO ILL 09/01/02 - - 10 NO ND ND ND ND - ND ND ND ND ND - - - - - - NO u9IL 04/15/03 -- -- 10 NO NO NO NO NO -- NO NO NO NO NO - -- - -- -- -- NO u9IL 10/01/03 - - 10 NO ND ND ND ND - ND ND ND ND ND - - - - NO u9IL 03/01/04 -- -- 10 NO NO NO NO 13 -- NO NO NO NO ND NO -- NO -- -- -- NO u9IL 09/01/04 - - 10 10 J ND ND ND ND - 10 J ND ND ND ND - - - - NO u9IL O5101/05 -- -- 10 NO NO 18 11 NO -- NO 18 NO NO NO NO -- NO -- -- -- ND u9IL 10/01/05 - - 10 ND ND 28 ND ND - ND 25 ND ND ND - - - - - - ND uglL 04/01/06 -- -- -- - - uglL 10/01/06 -- - 10 NO ND ND ND ND - NO ND NO NO NO - - -- -- -- -- ND u9IL .112107 -- -- -- NO NO NO NO ND - NO NO NO NO NO - -- - - -- -- ND u9IL 09/26107 - 0.041 J 0.045 J 0.045 J 0.04 J 0.051 J - 0.04] J 0.047 J 0.03] J 0.036 - - - - -- NO u9IL 0120/08 0,036 -- 5.5 NO NO NO NO NO - NO ND NO NO NO NO -- - - -- -- ND u9IL 12/01/08 0.036 -- 5.5 ND ND ND ND ND - ND ND ND ND ND ND - - - - - NO u9IL 12/O5I08 4.8 -- 5.5 - - -- -- -- -- ND u9IL 04/17/00 0.036 -- 5.5 NO ND NO NO NO - NO NO NO NO ND ND - - - - - ND u9IL 10/16109 0.11 -- 5.5 NO NO NO NO NO - NO NO NO NO NO -- - -- -- -- ND ILL 04/28I10 0.11 -- 5.5 ND ND ND ND ND - ND ND ND ND ND ND - - NO u9IL 08/02/10 0.11 -- 5.5 - - -- ND ND ND ND u9IL 10/11/10 0.11 -- 5.5 NO ND NO NO ND - ND NO NO ND ND NO - - - - - ND ug/L O5/09/11 0.11 -- 5.5 NO ND NO NO NO - NO NO NO NO NO NO ND u9IL 101 V11 0.11 - 5.5 NO ND NO ND ND - ND ND ND ND ND ND 0.154 J NO NO NO NO NO u9IL 04/17/12 0.11 - 5.5 NO NO NO NO NO - NO NO NO NO NO NO NO u9IL 10/25/12 0.11 - 5.5 ND ND ND ND ND - NO ND ND ND ND ND ND NO NO NO NO NO uglL 05/02/13 0.11 - 5.5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 09/24/13 0.11 - 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND NO NO NO NO NO ug/L 04/24/14 0.11 -- 5.5 NO NO NO NO NO ND NO ND NO ND ND ND NO NO NO NO NO u91L 10/06114 0.11 - 5.5 ND ND ND ND ND ND ND ND ND ND ND ND ND NO NO NO 0.23 J ND ug/L N114/15 0.11 - 5.5 NO ND ND ND ND ND ND ND ND ND ND -- ND NO NO NO NO ND u9IL 10/07/15 0.11 - 5.5 ND ND ND ND ND ND ND ND NO NO NO NO ND ug/L 04/20/16 0.11 - 5.5 ND ND ND ND ND ND ND NO NO NO NO NO NO NO NO NO NO NO ug/L 09126/16 0.11 - 5.5 NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ug/L 04/25/17 0.11 -- 5.5 0.239 J 0.168 J NO 0.301 J 0.321 J NO 0.288 J 0.200 J 0.173 J 0.180 J NO NO 0.265 J 0.221 J 0.191 J 0.138 J 0.200 J NO ugd. 10/1717 0.11 - 5.5 0.184 J 0.327 J NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND u9/L 04176/18 0.11 5.5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug8. 1016/18 0.56 5.00 -- NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ug/L 04/12/19 0.55 5.00 -- NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO ND ND ND ug/L 1010]119 0.22 2.00 -- NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND u9IL 04/20/20 0.22 2.00 -- NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND NO ND u9IL u IL 10/13I20 04/28/21 0.22 0.22 2.00 2.00 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO ND NO NO NO NO NO NO NO ND ND ND ND ND ND ND NO ND NO Ti. u9IL 03/01/99 -- -- 100 NO ND NO NO NO - NO NO ND NO NO NO - ND - - - ND IMAC=2000 ug/L u9IL 09/01/99 -- -- 100 NO NO NO NO NO - NO NO NO NO NO - -- - - ND (NO EPA MCL) u9IL 03/01/00 - -- 100 NO ND NO NO NO - 100 NO NO NO NO NO - NO - -- -- ND u9IL 09/01IN -- -- 1ol0 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- ND ug/L 03/01/01 - -- loll ND ND NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO u9IL 09/01/01 -- -- loll NO ND NO NO NO - NO NO NO NO NO - -- -- -- -- -- ND u9IL 03/01/02 - -- 100 NO ND NO NO NO - NO NO NO NO NO NO - NO - - - NO u9IL 09/01/02 -- -- 100 NO ND NO NO NO - NO NO NO NO NO - -- -- -- -- -- ND u:& 04/1513 - -- 100 ND ND ND ND ND - ND ND ND NO NO - -- - - - - NO uIL 10/01/03 -- -- 100 NO ND NO NO NO - NO NO NO NO NO - -- -- -- -- -- ND u9IL 03/01/04 I4 - -- 100 NO ND NO NO NO - NO NO NO NO NO NO - NO -- - - NO u9IL 09/ -- -- 100 NO ND NO NO NO - NO NO NO NO NO -- - -- -- ND u9IL OS/01/05 - -- loll NO ND NO NO NO - NO NO NO NO NO NO - ND - - - ND u9IL 10/01/OS -- -- 100 NO NO NO NO NO - NO NO NO NO NO -- -- - - -- -- NO u9IL 04/01/O6 - - _ - - - - - -- -- uglL 10/01/06 -- -- 100 NO NO NO NO NO - NO NO NO NO NO - -- - - -- -- ND ug/L 09/28I07 -- ND ND NO NO NO - NO NO NO NO - - - - -- NO u9IL 12/01/06 2.1 -- 100 ND NO NO NO NO - NO 2.90 J 2.5 J NO NO NO - - - - -- ND u9IL 10/i8109 2.1 -- 100 4.36 J ND 7.05 J 6.20 J 4.66 J - 5.58 J 7.96 J 6.03 J NO 3.37 J - - - - - NO u9IL 04/28/10 2.1 -- 100 NO NO NO NO ND - NO NO NO NO NO NO - - N u9ILL ! loll J 2.5 J 8.23 J NO 2.51JNO ND NO NO NDD u 2.1 1ol0 3024 J NO 11. J 3.62 J 4.23 J .84 ND 1. J 4.34 J N0/1211 u9IL 1Y512 2.1 100 3. J 2.10 8.91 J 4.31 J 3.95 J 5.32 J 8.90 J NO 4.44 .8 J 421 J 4.48 J NDO uL 09/24/13 2.1 -- 1ol0 NO NO NO NO ND NO ND ND ND ND NO ND ND u9IL 10M 14 2.1 -- loll NO ND 4.80 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 10/07/15 2.4 -- 100 -- NO NO NO ND NO NO NO NO NO NO ND NO NO uglL 0M 116 2.4 -- 100 NO -- NO NO NO NO NO NO NO NO NO NO NO ND NO NO NO NO u9IL 1W17/17 2.4 100 NO - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO uglL 10/18/18 2.9 10 - NO NO NO NO NO NO NO NO ND ND ND NO ND ND 3.23 J ND ND u9IL u L 10/07/19 10/ MO 2.9 2.9 10 10 - NO NO NO ND NO ND NO NO NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND V-dium u9IL 03/01M - - 40 NO ND 62 NO ND -- NO NO ND NO NO ND -- NO - - - NO IMAC=0.3 ug/L ugIL 09/01/99 - - 40 NO ND ND ND ND -- ND ND ND ND ND -- - - - NO (NO EPA MCL) u9IL 03/01/00 - - 40 NO ND 76 NO 46 -- NO NO NO NO ND NO -- NO - - - NO ug/L 09/01/00 - - 40 ND ND ND ND ND -- ND ND ND ND ND -- - - - NO ug1L 03/01/01 - - 40 NO ND 44 NO NO -- NO NO ND NO NO ND -- NO - - - NO ug/L 09/01/01 - - 40 ND ND ND ND ND -- ND ND ND ND ND -- - - - ND ug1L 03/01/02 - - 40 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - NO ug/L 09/01/02 - - 40 ND ND ND ND ND -- ND ND ND ND ND -- -- - - - - ND ug/L 04/15/03 - - 40 ND ND ND ND ND -- ND ND ND ND ND -- -- - - - - NO u9IL 10/01/03 - - 40 ND ND ND ND ND -- ND ND ND ND ND -- - - - NO ug/L 03/01/04 - - 40 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - ND uglL 09/01/04 - - 40 ND ND ND ND ND -- ND ND ND ND ND -- - - - NO u9IL 05/01/05 - - 40 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - ND ug1L 10/01/05 - - 40 ND ND ND ND ND -- ND ND ND ND ND -- -- - - - - NO ug/L 04I01/06 _ _ _ __ __ __ __ __ __ __ __ __ __ __ __ __ _ _ _ _ NO ug/L 10/01/06 - - 40 ND ND ND ND ND -- ND ND ND ND ND -- -- - - - - NO u9IL W1W07 - - - 3.4 J ND ND ND ND -- ND ND ND 14.5 J ND -- -- - - - - NO uglL 09/26/07 - 2.3 B ND ND ND ND -- ND ND 14.2 B ND -- -- - - - - NO ug/L 04/29/08 1.0 - 25 4.6 J 1.6 J NO NO NO -- 9.1 J 4.1 J 1.8 J 11 SA J ND ND -- - - - - NO ug1L 12/01/08 1.4 - 25 2.3 J ND NO ND ND -- ND ND ND 8.5 J NO ND -- - - - - NO uglL 12/OS/08 1.4 - 25 ._ u9IL 04/17/09 0.7 - 25 4.0 J ND NO 2.2 J 6A J - 6.8 J NO NO 10.0 J 2.1 J 50.1 - -- -- -- -- ND u9IL 10/16109 1.4 - 25 3.92 J ND NO 4.06 J 3.27 J -- 1.65 J 2.02 J 6.2 J 9.66 J 6.26 J - - -- -- -- -- ND u9IL 04/28110 1.4 - 25 3.65 J NO NO 3.66 J 4.29 J - 5.]8 J NO NO 8.15 J 2.02 J NO - -- -- -- -- ND u 5 9. J 3.15 J 2.14 J ND u9L 10/11/10 1.4 2 . J 2.4JIL 18.1 J 56.6 2.65 ND 665 J ND NuD 9. . J 180 J NO ND ug 10/1211 1.4 25 3.lL 23 J NO NO 2.61 J NO - 5.4 J 2.33 J NO 7.82 J NO ND 8.23 J OAS 3.91 J 12.8 J 2.57 J N uglLL 04/17/12 1A 2 388 J NO NO 1.93 J 212 J 304 JNO NO 8.14 JNO NO N u 105/12 1.4 25 d. 23 J 1.4 NO 2.30 J 1.0 8 J - 2.36 J 2.99 J 802 J NO 1 J NO NO 4.50 J 985 0.4 J S J 1.55 ND u9L 05/02113 1.4 25 6.8]5 J ND ND 2.86 J 4 J J 21 J ND 6.26 J 2.5 5.2 J JND NO ND ND8 u9 094/13 2 32 JND 2 J 2.4 87 J .47 J 1.9] J NO ND d.93 J ND 83 08 J J 1.81 J 21.2 J ND NOIL uuglLL 04Y114 1.4 25 3.827 J NO NO 2. J NO 3.81 J NO ND 4.90 J 2 J 7..66 J NO 1.71 J 3.9232 .14 J N ND u 1.4 3.3 J ND NO 2.25 J NO 1.87 J NO ND ND 3.45 J 9 J I.J NO 3.30 13. ]O] J10/06/14 NO NO uglLL 04/14/15 1A 255 328 J NO NO ND 6.41 J ND ND NO ND 2.305 J ND NO NO 2 J"0 J NO NO 10/07/15 1A 2 4.71 J ND 12.8 J ND . J 6 J J ND 22J 1.918 2 J 12.0 JND NO 4 1 3.59 J NO 04/20/18 1.4 466 J ND 276 7 1 J25 J N NOuI u 09/26/16 IA 25g1L NO 2.08 J ND 1.89 J ND ND NO 1.8 J 8 J 2.07 J NO N 4.92 J NO NO N u9IL Od2517 1.4 5 0 NO NO 21] J 12. 2.8 J3.d NO N 12.4 12.9 J ].32 NO D uL 14 2 4 J 5.4 NO 5 J 7.31 J ND ND 2.51 2.14 91 4 416JNO D10/17/17 u9IL 04/i6/18 14 25 37 6 J 2.0 NO NO ND 2.83 5.8 J 3 JNO NO NO 215 J 590 JNO NO 4.33 J 2 J 1.96 J NO ugL 1.6/18 141. 4.20J ND ND 2.% J 425 J 1.83 J 2.11 J ND ND ND 393 J . J J 5.17 J 1. JNO NO ug1 04/1219 IA NO NO NO 2 J 3S J 4.30 J NO NO NO ;2 N 1.]4 J 2.15 J 2.6 J NO NO u 10/07/19 1A 4.93 J ND ND ND ND JND ND ND ND J ND 1.a J 2.48 J 2.27 J D N NglL D ug1 04/20120 1.4 0 4.15 J NO NO 1.79 J 1.81 J 3.69 J2.56 J NO NO NO 3.66 J 1.90 J NO NO 1.84 J 2.53 J NO NO ug& 10/13/20 1.4 10 - 3.56 J ND ND ND ND ND ND ND ND ND ND ND ND NO NO NO NO NO ugIL 1 04/28/21 1.6 1 10 3.57 J ND NO NO NO NO 3.81 J NO ND ND ND ND ND NO NO NO NO NO Zinc u9IL 0310159 - - 50 ND ND 62 ND ND -- ND ND ND ND ND ND -- NO - - - ND NC 2L=1000 ug/L ug/L .101/99 -- -- W NO NO NO ND ND -- ND ND ND ND ND -- - - - ND EPA MCL=5000 ug/L ug/L 03/01/00 - - 50 ND ND 16 ND ND -- ND ND ND ND ND ND -- NO - - - NO u9IL 09/01/00 -- -- 50 ND NO ND ND ND -- ND ND ND ND ND -- - - - NO ug/L 03/01/01 - - 50 ND ND 52 ND ND -- ND ND ND ND ND ND -- NO - - - NO 090 - -ND NO ND ND ND-- ND ND ND ND ND -- -- - - -- - NO ug/L 03/01/02 - - 50 ND ND ND ND ND -- NO NO NO NO NO NO - NO - - - NO u9IL 09/O1/02 -- 5O ND ND ND NO NO -- NO NO NO NO NO -- -- - - -- -- NO ug/L 04/15/03 - 50 NO NO NO NO NO - NO NO NO NO NO - - - - - - ND u9IL 10/OV03 -- 50 NO NO NO NO NO -- NO NO NO NO NO -- -- - - -- -- NO ug/L 03/01/04 - 50 NO NO NO NO NO - NO NO NO NO ND NO - ND - - - ND ug/L O9IO1I04 -- -- 50 ND NO NO NO NO -- NO ND ND NO ND -- - -- -- -- -- NO ug/L 05101/OS - - 50 NO NO NO ND NO - ND NO NO NO NO NO - ND - -- -- ND u9IL 1a1O1105 -- -- 50 ND NO ND NO NO - NO NO NO NO NO -- - -- -- -- -- NO ug/L 04I01106 - - - - - - - - - ug/L 10/01/06 -- -- 50 ND ND ND NO NO - ND NO NO NO NO -- -- - - -- -- NO ug/L 04/12/07 - - - 2.2 J NO NO NO 3.0 J - NO NO NO NO NO - - - - - - ND ug/L O9125/07 -- 2.5 J ND ND 1.3 J 2.1 J - 69.7 2.3 J NO 1.0 - - - -- -- NO ug/L 04129/O8 1.0 - 10 8.7 J 1.3 J NO NO 2.5 J - 25 J 30 NO NO NO 3.5 J - - -- -- -- ND ug/L 12IO1I08 3.8 -- 10 7.8 J NO ND NO NO - NO NO NO NO NO 20.5 - - -- -- -- NO ug8. 0411 ]/09 3.4 - 10 9.4 J ND 5A J NO 7.1 J - 4.2 J 5.7 J 3.7 J ND 4.7 J 37.5 - - - - - ND ug/L 10/16I09 3.8 -- 10 7.66 J NO NO 8.88 J 7.31 J - NO 4.87 J 60.4 NO 4.03 J - - -- -- -- NO u9IL 04I28110 3.8 - 10 7.20 J NO 5.77 J NO 6.28 J - ND 4.08 J 6.49 J NO NO NO - - ND ug/L 3.8 -- 10 - -- -- -- - - -- - -- -- -- - - - 96.8 5.90 J 7.60 J NO u9IL 10111/10 10I11/10 3.8 - 10 ND 8.16 J NO NO NO - NO NO NO NO NO NO - - 409 35.4 8.07 ND ug/L 05I09/11 3.8 -- 10 4.92 J 7.58 J 5.52 J NO NO - NO NO NO NO NO NO NO ug/L 10I12/11 3.8 - 10 ND NO 5.46 J NO NO - NO NO NO NO ND NO 5.78 J 62.0 260 9.04 J 8.37 J ND ug/L 04/17/12 3.8 -- 10 4.48 J NO 3.95 J NO 5.80 J - ND NO NO NO NO NO NO u9IL 10125/12 3.8 - 10 11.1 NO 5.48 J NO NO - NO 8.58 J NO NO 4.57 J 4.94 J 3.91 J 29.8 272 439 J 5.97 NO ug/L 05/02/13 3.8 -- 10 7.37 J 4.11 J NO ND 4,31 J 4.60 J NO NO NO NO NO NO 23.3 676 5.54 4.19 NO u9IL 09124/13 3.8 - 10 NO NO NO NO 5.36 J 4.03 J 4.85 J NO NO NO NO 10.2 NO 20.0 438 11.8 7.82 J ND ug/L 04124114 3.8 -- 10 NO NO 4.33 J NO NO 110.4 NO NO NO NO 5.56 J 8.42 J 350 635 9.92 J 4.21 J ND ugd. 10/OB/14 3.8 - 10 NO 7.21 J 16.5 4.05 J 4.]9 J 4.19 J 10.7 NO 4.38 J NO 4.60 J 5.60 J 4.52 J 48.5 58.2 6.33 J 12.3 ND ugh 04I74I15 3.8 -- 10 12.3 9.44 J NO NO 8.67 J 6.39 J 31.1 4.49 J 6.85 J 3.80 3.80 NO 26.5 529 11.2 4.38 J NO ug8. 10/07/15 3.8 - 10 4.19 J NO 7.21 J NO NO 7.74 J 5.12 J NO NO NO 7.21 J NO 20.2 280 ND 12.1 ND ug/L 04120116 4.4 -- 10 15.1 NO NO NO NO NO 13.7 9.56 J NO NO NO 9.19 J NO 350 588 39.2 NO ND ug8. 09/26116 4.4 - 10 4.85 J ND ND 5.23 J ND 7.93 J 8.]5 J NO 6.36 J 14.8 NO ND 58.0 52.8 ND 5.91 J ND ug/L 04/25117 4.4 -- 10 5.06 J 0." J NO NO 5.84 J NO 11.0 8.99 J NO NO NO 7.84 J NO 40.6 730 ND 5.31 J ND ug/L 10/17117 4.4 - 10 4.64 J NO NO NO NO 4.74 J 6.53 J NO NO NO NO 5.21 J 24.4 67.5 ND 7.07 J ND u9IL 04/16178 4.4 10 6.74 J 5.94 J 4.67 J NO NO NO 11.8 4.98 J NO NO NO 6.46 J NO 48.3 388 ND ND ND u9IL 10/16/18 4.4 10 - 6.31 J 28.2 NO 5.80 J ND 11.7 7.28 J NO NO ND NO 14.0 61.1 479 7.96 J NO NO u9IL 04/12119 4.4 10 -- 13.0 NO 9.25 J NO 15.8 NO 16.5 68.9 NO NO NO 4.53 J 5.37 J 78.1 899 NO NO ND u9IL 10/07/19 4A 10 - 8.73 J 6.46 J 6.80 J 6.48 J 9.23 J 6.44 J 22.4 9.94 J 9.82 J 22.3 10.6 ND ND 31.1 154 7.03 J 7.29 J NO uglL 04120Y20 4.4 10 -- NO NO NO 4.71 J NO NO 17.1 21.1 NO NO NO 5.38 J NO 50.2 394 NO NO NO uglL u 1L 10/13/20 04/28121 4A 4.4 10 10 - ND NO ND NO ND NO 4.79 NO J 5.73 8.55 J ND J NO 7.63 5.17 J 24.6 J 18.9 ND NO ND NO ND NO 41.6 20.6 ND NO 19.5 79.4 376 517 NO NO NO 4.46 J NO NO Acetone u9IL 03/01/99 - - 100 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - NO NC 2L=6000 ug/L u9IL 09/01/99 -- - loll NO NO NO NO NO -- NO NO NO NO NO -- - - - NO (NO EPA MCL) ug/L 03/01/00 - - 100 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - NO u9IL 09/01/00 -- - 100 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO u9IL on /01 - - loll ND ND ND ND ND - ND ND ND ND ND ND -- NO - - - NO u9IL 09/01/01 -- - 100 NO NO NO NO NO -- NO ND NO NO ND -- - - - NO u9IL 03/01/02 - - 100 ND ND ND ND ND -- ND ND ND ND ND ND - NO - - - NO ug1L 09/01/02 -- - 100 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO ug1L 04/15/03 - - 100 ND ND ND ND ND -- ND ND ND ND ND -- - - - - - NO u9IL 10/01/03 -- - 100 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ug& ON01104 - - 100 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - NO u9IL 09/01/04 -- -- 100 NO NO NO NO NO -- NO ND ND ND ND -- - - - NO ug& O5/01105 - - 100 ND ND ND ND ND -- ND ND ND ND ND NO -- NO - - - NO u9IL 10/01/05 - - loll ND ND NO NO ND -- ND ND ND ND ND -- -- - - - - NO ug1L W01106 - _ _ .. .. .. .. .. .. .. ug1L 10/01/06 -- - 100 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO /L ug/L 04/ - - - ND ND ND ND ND -- ND ND ND ND ND -- -- - - - - NO ug1L 09/26/07 - 3.8 B 5.5 B 18 B 1.6 J NO -- 12 J NO NO 11 B -- - - - - NO ug/L 04/29/08 0.62 - 100 0.62 5.9 J 5.5 J ND ND - 3.4 J 4.8 J ND ND ND 7.4 J - - - - - NO ug1L 12/01/08 1.5 - loll NO NO NO 7.3 J NO -- NO 10 J NO NO NO 6.1 J -- - - - - NO ug/L 10/16/09 1.5 - 100 ND ND ND ND ND -- ND 20 J 2.4 J ND ND -- - - - - NO ug1L 04/28/10 1.5 - loll NO NO NO NO NO -- NO 5.4 J 2.0 J NO NO ND -- - NO ug/L OB/02/10 1.5 - 100 - -- -- - -- -- -- - NO 3 J NO NO ugI 10/11/10 1.5 - 100 NO NO NO 5.2 J NO NO NO NO NO NO NO -- - NO NO NO NO ug/L O5/09/11 1.2 - 100 ND ND ND ND ND -- ND ND ND ND ND 16 J NO u9IL 10/12/11 1.2 - 100 NO NO NO NO NO -- NO NO NO ND ND OA J ND NO NO NO NO NO ug& W17112 1.2 - 100 ND ND ND 5.8 J ND -- ND ND ND ND ND ND NO NO NO NO NO u91L 10/25/12 1.2 - 100 NO ND 3.3 J ND ND -- ND 9.8 J ND ND ND 5.4 J ND NO NO NO NO NO ug1L 05/02/13 1.2 - 100 ND ND ND ND ND ND ND ND ND ND 28 J ND NO ND ND ND ND ug/L M124/13 1.2 -- loll ND ND 4 J ND ND 4.7 J ND 7.1 J ND 2.2 J ND ND ND NO NO NO NO ND ug/L 04/24/14 1.2 - 100 ND ND ND ND ND ND ND ND ND ND 36 J NO NO ND NO NO NO u9IL 10106/14 1.2 - loll ND ND ND ND ND ND NO 16 J ND ND ND ND ND NO NO NO NO NO ug/L 04/14/15 1.2 - 100 ND ND ND ND ND ND NO NO NO NO NO NO NO ND NO NO NO u9IL 10107/15 1.2 -- loll NO ND ND ND ND ND ND NO NO NO NO NO NO NO NO NO NO ug/L 04120/16 1.2 - loll NO 1.2 NO NO NO NO NO NO NO NO NO NO NO ND ND ND 1.2 ND ug/L 09/26/16 10 -- 100 ND ND ND ND NO NO NO NO NO NO NO NO NO NO NO NO NO ugd. 04/25/17 10 -- 100 18 B 20 B 19 B 21 B 12 B 33 B 14 B NO i1 B i1 B 28 B 33 J 18 B 15 B 20 B 14 B ND 28 J u9IL 10117117 10 -- 100 ND ND ND NO NO NO NO ND ND ND NO ND ND ND ND ND ND ug8. 04/16118 10 to NO NO NO NO NO NO NO 44 J NO NO NO 14 J NO ND ND ND ND ND u9IL 10/16118 10 20 -- NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ug/L 0112119 10 20 -- NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ND ug/L 10/07119 10 20 -- NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND NO ND u9IL 04=120 10 20 - NO ND ND ND ND NO ND ND ND ND NO NO NO NO NO NO NO NO uglL u IL 10/13/20 04/28I21 10 10 20 20 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO ND NO ND NO NO NO NO NO NO NO NO ND NO NO NO NO NO NO NO R GGLG!■ 4of 12 August 2021 TABLE 4 S-q of Grondwater Monitoring Resits Detected Conatitenta White Street L-dfill - Phase 11, Permit No. 41413 Greensboro, North Caroline Method Practical SWS Auessmenl Oetedetl Monitoring Cons[nuent Reporting Sample Oete - DuamitMion Reporting Upgradient Monitoring W011e Compliance Downgradient Monitoring Walla Monitorng Sentinel Monitorng Wells Blanks Units Date Limn Limit Limn MW-13 MW-1I 11.1 11.2 II-S INA II.S II-fi II-] II-]B II.B II-12 Well IISB II4 8MW4 8MW-3 BMWd Benzene ugIL 03101 NJ9 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- - NO NC 2L = 1 ug/L ugIL 09/01M NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO EPA MCL=5ug/L ugIL 03/01/00 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- ND ug/L 09/01/00 - - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ugIL 03/01/01 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO ugIL 09/01/01 - - 5 NO NO NO NO NO - NO NO NO NO NO - - - - NO ugIL 03I01102 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- NO ug/L 09/01/02 - - 5 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO ugIL 04/15103 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - -- - -- -- -- NO ug/L 10/01/03 - - 5 NO NO NO NO NO - NO NO NO NO NO - - - - NO ugIL 03101/04 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- NO ugIL 09/01/04 - - 5 NO NO NO NO NO - NO NO NO NO NO - - - - NO ug/L 05/01/05 -- -- 5 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - -- -- ND IL 10/01/05 - - 5 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO ugIL 04/01/O6 -- -- -- - - - ug/L 10101/M -- - 5 NO NO NO NO NO - NO NO NO NO NO - - - - -- -- ND ug/L 04/12I07 -- -- -- NO NO NO 1A NO - NO NO NO NO NO - - - - -- -- ND ugIL 09126/07 - - NO NO 0.77 J 1.5 NO - NO NO NO NO - - - -- -- ND ugIL .129108 0.2 - 1 NO NO NO 1.8 NO - NO NO NO NO NO NO - - -- -- -- ND ugIL 12101/08 0.2 -- 7 NO NO 1.1 1.6 0.52 J - NO 2.9 NO NO NO NO - - - -- -- NO ug/L 02/13/09 0.2 - 1 - - - - - - - 1.8 - - - - - -- -- -- -- NO ug/L 0211311 0.2 - 1 ug/L o411]/09 0.2 -- 1 NO NO 0.7 J 1A NO - NO NO 0.42 J NO NO NO - -- -- -- -- ND ugIL 10116/09 0.2 -- 1 NO NO 1.4 1.9 0.7 J - NO 1.7 NO NO NO - -- -- -- -- NO ug/L 04/28/10 0.05 -- 1 NO NO 1.1 1.2 0.80 J - NO 1.8 0.64 J NO NO NO - -- -- -- -- NO ug/L 08/02110 0.2 -- 1 NO 1.4 0.88 J - NO NO - NO NO NO NO NO ugIL 10/11/10 0.2 - 1 NO NO 1.2 067 J 0.% J - ND 2.2 NO NO NO NO - -- NO ND ND ND ugIL 0 0.68 -- 1 NO NO 0.78 J NO NO - NO NO NO NO NO NO ND ugIL 10/12/11 0.68 -- 1 NO NO 0.98 J NO NO - NO NO NO NO NO NO NO ND NO NO ND NO ugIL 04/1]112 0.15 -- 1 NO NO 0.91 J NO 1.1 - NO NO NO NO NO NO ND NO NO NO NO ug/L 10Y25/12 0.15 - 1 NO NO 1.6 NO 1A - NO 2.3 NO NO NO NO NO NO NO NO NO NO ugIL 05/02I13 0.15 -- 1 NO NO 0.45 J NO 1.7 NO NO NO NO NO NO NO ND ND ND ND ND ugIL 09Y24113 0.15 - 1 NO NO 1.1 NO 1.3 0.62 J NO 1.6 NO NO NO NO NO ND ND ND ND ND ug/L 04/24/14 0.15 -- 1 NO NO NO NO 1.0 - NO NO NO NO NO NO NO ND NO NO NO ND ugIL 1.6/14 0.15 - 1 NO NO 1.1 NO 1.1 0.41 J NO 2.0 NO NO NO NO NO NO NO NO ND NO ug/L 04/14/15 0.15 -- 1 NO NO 0.73 J NO 1.5 0.67 J NO NO NO NO NO NO NO NO NO NO NO ugIL 10/07/15 0.15 - 1 NO - 1.2 NO 1.3 0.73 J NO 1.4 NO NO NO NO NO ND ND ND ND ND ug/L 04/20/16 0.15 -- 1 NO NO 0.78 J NO 1.4 0.57 J NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/26/16 0.15 - 1 NO NO NO NO 0.67 J NO 2.1 NO NO NO NO NO NO NO NO NO NO ugIL 04/25/17 0.15 - 1 NO NO NO NO 1A 0.78 J NO NO NO NO NO NO NO NO NO NO NO NO ug/L 10/17/17 0.15 -- 1 NO - 1.8 NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ugIL 04/16/18 0.15 1 NO NO NO NO 1.2 0.67 J NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/16/18 0.15 1.0 -- NO - NO NO 1.1 0.60 J NO 0.69 J NO NO NO NO NO NO NO NO NO NO ug/L 04/12119 0.15 1.0 - NO NO NO NO 0.93 J 0.45 J NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/07/19 0.15 1.0 -- NO NO 1.5 NO 0.84 J 0.54 J NO 1.2 NO NO 0.32 J NO NO NO NO NO NO NO ugIL 04/20/20 0.15 1.0 - NO NO NO ND 0.62 J NO NO ND NO NO ND ND NO NO NO NO NO NO u9/L u L 10/13/20 04/26/21 0.15 0.15 1.0 1.0 -- ND ND NO NO 0.58 ND J NO NO 0.54 NO J 0.61 ND J ND ND NO NO NO NO NO NO ND 0.62 ND J ND NO ND NO ND NO NO NO NO NO NO NO ND Carbon Tetrachloride ugIL 03/Ot/99 - - 10 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - NO NC 2L=0.3ug/L ugIL 09/01/99 - - 10 ND ND ND NO ND -- ND NO NO NO ND -- - - - NO EPA MCL = 5ug/L ug/L 03/01/00 - - 10 ND ND ND ND ND -- ND ND ND ND ND ND -- ND - - - NO ugIL 09/01/00 - - 10 NO NO NO ND ND -- ND ND ND ND ND -- - - - NO u9/L 03/01/01 - - 10 NO NO NO NO NO -- NO NO ND ND ND NO -- NO - - - NO ugIL 09/01/01 - - 10 ND ND ND ND ND -- ND ND ND ND ND -- - - - NO ug/L 03/01/02 - - 10 ND NO ND ND ND -- ND ND ND ND ND NO -- NO - - - NO u9/L 09/01/02 - - 10 ND ND ND ND ND -- ND ND ND ND ND -- -- - - - - NO u9/L 04/15/03 - -- 10 NO ND ND ND ND -- ND ND ND NO ND -- -- - - - - NO u9/L 10/01/03 - - 10 ND ND ND ND ND -- ND NO NO NO NO -- - - - NO ugIL 03/01/04 -- -- 10 NO ND NO NO ND -- NO ND NO NO NO NO -- NO - -- -- NO u9/L 09/01/04 - - 10 ND NO NO NO NO -- NO NO NO NO NO - - - - NO ugIL 05/01/05 -- -- 10 ND NO NO NO NO -- ND ND ND ND ND ND -- NO - -- -- NO u9/L 10101/05 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO u9/L 04/01/06 -- -- - -- -- -- ug/L 10/0IM6 - - 10 ND ND ND ND ND -- ND ND ND ND ND -- -- - - - - NO u9/L 04112(07 - -- - NO ND ND ND ND -- ND NO NO ND NO -- -- - - - - NO u9/L 09/26/07 - ND ND ND ND NO -- NO NO NO NO - - - - - NO u9/L 04/29/08 0.35 -- 1 ND NO NO ND NO -- NO ND NO NO NO NO -- - - - -- NO u9/L 12101/08 0.38 - 1 NO NO NO NO NO - NO NO NO NO NO NO - - - - - NO ug/L 04/17/09 0.38 -- 1 NO NO NO NO NO -- NO ND ND ND ND NO -- - - - -- NO u9/L 10I16/09 0.38 - 1 NO NO NO NO NO - NO ND ND ND ND - - - - - NO ugIL 04/28/10 0.38 -- 1 ND ND ND NO NO -- NO NO NO NO NO NO - -- NO ug/L 08102/10 0.38 - 1 - - - NO NO NO NO ug/L 10111/10 0.38 -- 1 ND ND NO NO NO -- NO ND ND ND ND NO -- - NO NO NO NO ug/L 05I09/11 0.69 - 1 NO ND ND ND ND - NO ND ND NO NO NO NO ug/L 10/12/11 0.69 -- 1 ND NO NO NO NO -- NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/1712 0.17 - 1 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO ND ND ug/L 1012W 2 0.17 -- 1 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO NO ugIL 05/02/13 0.17 - 1 NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO ND ND ug/L 0./ 3 0.17 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/24114 0.17 - 1 NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ugIL 10/06114 0.17 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND NO ND ug/L 04/14/15 0.17 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/07/15 0.17 - 1 NO 0.47 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/20/16 0.17 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO ugIL 09/26/16 0.17 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04)25/17 0.17 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/17/17 0.17 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/16/18 0.17 1 NO NO NO NO NO NO ND ND ND ND ND NO NO NO NO NO NO NO ugIL 10/16/18 0.17 1.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/12119 0.17 1.0 - NO NO ND ND ND ND ND ND ND ND ND ND ND NO NO NO NO NO ug/L 10/07/19 0.17 1.0 -- NO NO NO NO NO NO NO NO ND NO NO ND ND NO NO NO NO NO ugIL 04/20/20 0.17 1.0 - ND ND NO ND ND ND ND ND ND ND ND ND ND NO NO NO NO NO uyL u L 10/13/20 04/28/21 0.17 0.17 to 1.0 - ND ND ND ND ND ND NO ND ND ND ND ND ND ND ND ND ND NO ND NO ND NO ND NO ND NO NO NO NO NO NO NO NO ND NO NO Chlombenzene ug/L 03101/99 - - 5 ND ND ND NO NO -- ND NO NO NO NO NO -- NO - - - NO NC 2L=50 ug/L ug/L '10 No ND ND ND ND ND -- ND ND ND ND NO -- - - - NO EPA MCL=100 ug1L ug/L 03101/00 - - 5 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - NO ugIL 09/01/00 - - 5 ND ND ND ND ND -- ND ND ND ND ND -- - - - NO ug/L 03101/01 -- - 5 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - NO ugIL 09/01/01 - - 5 ND ND ND ND ND -- ND ND ND ND ND -- - - - NO ug/L 03101/02 - - 5 ND ND ND ND ND -- ND ND ND ND NO NO -- NO - - - NO ugIL 09/01/02 - - 5 ND ND ND ND ND -- ND ND ND ND NO -- -- - - - - NO ug/L 1010,/03 - - 5 ND ND ND ND ND -- ND ND NO ND NO -- - - - NO ugIL 03I01/04 - - 5 ND ND ND ND ND -- NO NO NO NO NO NO -- NO - - - NO ug/L 03101/04 - - 5 ND ND ND ND ND -- NO NO NO NO NO NO -- NO - - - NO ug/L 09I01/04 - - 5 ND ND ND ND ND -- NO NO NO NO NO -- - - - NO ug/L 05101/05 - - 5 ND ND ND ND NO -- ND NO NO ND ND ND -- ND - - - NO ug/L f0101/OS - - 5 ND ND ND NO NO -- ND NO NO NO NO - - - - - - NO ug/L 10I07/O6 - - 5 ND ND NO NO NO -- ND NO NO NO NO - - - - - - NO ugIL 04/12/0] - - - NO ND NO NO NO - NO 2.5 J ND ND ND - - - - - - NO ug/L 09126/07 - NO NO 1.1 J 0.49 J NO - 0.50 J NO NO 2.0 J - - - - - NO u9/L 04129/0 0.27 -- 3 NO NO NO 0.52 J NO - ND NO NO NO 2.2 J ND - - - - - NO ug/L 12101/OB 0.27 -- 3 NO NO 1.8 J 0.54 J ND - ND 4.7 ND ND 1.9 J ND - - - - - NO ug/L 04117/09 0.27 -- 3 NO NO 1.0 J 0.49 J ND - ND NO ND ND 2.0 J ND - - - - - NO ug/L loll6/09 0.27 -- 3 NO ND 2.9 J 0.78 J NO - ND 5.0 ND ND 2.1 J - - - - - NO ug1L 04129/10 0.089 -- 3 - NO 1.4 J 0.48 J - - - - NO NO - - - NO NO ug/L 08102/10 0.27 -- 3 - - - -- -- -- -- -- -- -- -- -- -- - NO NO NO NO ug1L 10111/10 0.27 -- 3 NO NO 3.2 0.]6 J NO - NO 7.4 NO NO 2.8 J NO - - NO NO NO NO ug/L 05,09/11 0.74 -- 3 ND NO 1.2 J 0.76 J ND - ND NO NO ND 2.3 J NO NO ug/L 10I12/it 0.]4 -- 3 ND ND NO 0.99 J NO - ND ND NO ND 2.3 J NO NO NO NO NO NO NO ug/L 04117/12 0.17 -- 3 NO NO 2.0 J 0.51 J NO - NO 0.71 J NO NO 2.5 J NO NO NO NO NO NO ug/L 10/25/12 0.17 -- 3 NO NO 3.5 0.74 J NO - NO 5.7 NO NO 1.8 J NO NO ND NO ND ND NO ugIL 0,102113 0.17 -- 3 NO NO 1.4 J 0.88 J NO NO NO NO NO 2.4 J NO NO NO ND ND ND ND ug/L 09/24/13 0.17 -- 3 NO NO 2.9 J 0.89 J NO 2.0 J NO 4.3 NO NO 2.0 J NO NO 0.52 J ND ND ND ND ugIL 04/24114 0.17 -- 3 NO NO 3.0 1.0 J NO NO NO NO NO 2.2 J NO NO ND ND ND ND ND ugIL 10/08114 0.17 -- 3 NO NO 4.3 0.72 J 0.45 J 1.5 J NO 5.8 NO NO 2.2 J NO NO 0.62 J ND ND ND ND ug/L 04/14115 0.17 -- 3 NO NO 2.0 J 0.63 J NO 2.4 J NO NO NO NO 1.7 J NO ND ND ND ND ND ugIL 10/0]I15 0.17 -- 3 NO 3.4 ND ND 2.8 J ND 3.6 ND ND 1.9 J NO NO 0.60 J ND ND NO NO ugIL 04/20/16 0.17 -- 3 ND ND 3.3 0.87 J NO 2.5 J NO 0.]3 J NO NO 2.0 J NO NO NO ND ND ND ND ug/L 09Y28I16 0.17 -- 3 NO 4.3 NO NO 2.7 J NO 6.4 NO NO NO NO NO 0.40 J ND ND ND ND ugIL 04/25/17 0.17 -- 3 NO NO 2.0 J 0.87 J NO 3.4 NO NO NO NO 2.2 J NO NO 0.45 J NO NO ND ND ug/L 1017117 0.17 -- 3 NO NO 1.2 J NO 3.8 NO 7.5 NO NO 2.5 J NO NO 0.60 J NO NO ND ND ugIL 04/16/18 0.17 3 NO NO 1.9 J 0.97 J NO 3.4 NO 0.82 J NO NO 1.8 J NO NO NO NO NO NO NO ugIL 10/i W18 0.17 1.0 -- NO 1.1 0.85 J NO 3.6 NO 2.5 NO NO 1.9 NO NO NO NO NO NO NO ugIL 04/12119 0.17 1.0 -- NO NO 2.9 0.87 J NO 3.5 NO NO NO NO 1.9 NO ND NO NO NO NO NO u9/L 10/07/19 0.17 1.0 - NO NO 6.1 0.88 J 0.23 J 3.2 NO 5.1 NO NO 1.9 NO NO 0.41 J NO NO NO NO ug/L W20/20 0.17 1.0 - NO NO 3.0 0.63 J NO 2.5 ND 1.1 ND ND 1.3 ND ND NO NO NO NO NO ugIL ..IL 10/13/20 04/2wl 0.17 0.17 1.0 1.0 - NO ND NO ND 2.8 1.7 0.85 0.69 J ND J ND 3.2 1.6 NO ND 3.0 ND NO ND NO ND 1.6 1.9 NO ND NO ND 0.52 NO J NO NO NO NO NO NO NO NO ChlomeMane ugIL 03/04 - - f0 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - NO NC 2L=3000 ug/L ug/L 09/01/99 - - 10 ND ND 33 ND ND -- ND ND ND ND ND -- - - - NO (NO EPA MCL) ug/L 03/01/00 - - f0 ND ND 16 ND ND -- ND ND ND ND ND ND -- NO - - - NO ugIL 09/olmo - - 10 ND ND 22 ND ND -- ND ND ND ND ND -- - - - NO ugIL 03/01/01 - - 10 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - NO ug/L W/01/01 - - 10 ND ND 24 ND ND -- ND ND ND ND ND -- - - - NO ugIL 03/01/02 -- - f0 ND ND ND ND ND -- ND ND ND ND NO NO -- NO - - - NO ug/L 09101/02 - - 10 ND ND ND ND ND -- NO NO NO NO NO - -- - - - - NO ug/L 04/15/03 -- - f0 ND ND NO ND NO -- NO NO NO NO NO -- -- - - -- - NO ug/L 10101/03 - - 10 ND ND NO NO NO -- NO NO ND ND ND - - - - NO ug/L 03/01/04 -- - 10 ND NO NO NO NO -- NO NO ND ND ND ND -- NO - -- -- NO ug/L 09101/04 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - NO u91L 05/01/05 -- - f0 NO NO NO NO NO -- NO NO NO NO ND ND -- ND - -- -- NO ug/L 10101/05 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO ugIL 04101/06 -- -- - - - - -- -- -- -- -- -- -- -- -- -- - - - - - u9/L 10/01/06 - - 10 ND ND ND ND ND -- NO NO NO NO ND - - - - - - NO ugIL 04112/07 - - - ND ND NO ND NO -- NO NO NO NO ND -- -- - - - -- NO ug/L 09I26/07 - NO NO 2.8 J NO NO - 16 J NO NO NO - - - - - NO ug/L 04/29/08 0.3 - 10 ND ND NO ND 1.8 J -- ND NO NO NO 1.6 J ND -- - - - -- NO ug/L 12101/08 0.3 - 10 ND NO 3.1 J ND 2.8 J - ND ND NO ND 1.6 J ND - - - - - NO ug/L 04/17/09 0.3 -- 10 ND NO NO ND ND -- ND ND ND ND ND ND -- - - - -- NO ug1L 10116/09 0.3 - 10 ND NO 1.71 0.61 J NO - NO 0.3 NO NO 0.3 - - - - - NO ug/L 04/28/10 0.18 -- 10 ND NO 0.95 J ND 1.6 J - ND ND ND ND 0.70 J ND -- NO ug/L 08102/10 0.3 - 10 NO 1.5 J NO - NO NO - 0.46 J NO NO NO NO ug/L 10/11/10 0.3 -- 10 ND ND 1.6 J 0.57 J 1A J - ND ND ND ND 0.8 J NO -- - NO NO NO NO ug/L 05/09/11 0.75 - 10 ND NO NO NO NO - NO NO NO NO NO NO NO ug/L 10I12/it 0.75 -- 10 ND NO NO ND ND - ND NO NO NO NO NO NO ND ND ND ND ND ug1L 04/17/12 0.23 -- 10 ND ND ND ND NO - NO NO NO NO NO NO ND NO ND NO NO ug/L 10125112 0.23 -- 10 NO NO NO NO NO - NO NO NO NO NO NO NO ND ND NO ND ND ugIL 0,102113 0.23 -- 10 NO NO NO NO 2.1 J NO NO NO NO NO NO NO ND ND ND ND ND ugIL 09124113 0.23 -- 10 NO NO NO 0.47 J ND NO NO NO NO ND ND ND ND 0.81 J ND ND ND ND ugIL 04/24/14 0.23 -- 10 NO NO NO NO 1.8 J NO NO NO NO NO NO NO NO NO NO NO ND ugIL 10/06I14 0.23 -- 10 NO NO NO ND ND NO NO NO NO NO NO NO ND ND ND ND ND NO ugIL N114115 0.23 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND NO ug/L 10/0]115 0.23 -- 10 NO 0.94 J NO 1.5 J 1.2 J NO NO NO NO NO NO NO ND ND ND NO NO ugIL 04/20/16 0.23 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/26116 0.23 -- 10 NO NO NO NO NO NO NO NO NO NO ND ND NO NO NO NO NO ug/L 04/25/17 0.23 - 10 NO NO NO NO 0.98 J NO NO ND ND NO NO ND NO NO NO NO NO NO ug/L 10/17/17 0.23 -- 10 ND NO ND NO ND ND ND ND ND ND ND ND NO NO NO NO NO ugIL 04/16/18 0.23 10 NO NO NO ND NO NO ND ND ND ND ND ND ND NO NO NO NO NO .of 10/16/18 0.23 1.0 - NO ND ND ND ND ND ND ND ND ND ND ND NO NO NO NO NO ugIL 04/12/19 0.23 1.0 - NO ND ND ND ND ND ND ND ND ND ND ND ND NO NO NO NO NO ugIL 10107/19 0.23 1.0 - NO ND NO ND ND NO ND ND ND ND ND ND NO NO NO NO NO NO ugIL 04/20/20 0.23 1.0 - NO ND ND ND ND NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL u L 10113/20 04I28/21 0- 0.23 1.0 1.0 - NO ND ND NO NO ND NO NO ND NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND NO NO NO NO NO NO NO NO NO NO NO NO R GGLG!■ 5of 12 August 2021 TABLE 4 S-q of Grondwater Monitoring Resits Detected Conatileeta White Street L-dfill - Phase 11, Permit No. 41413 Greensboro, North Carolina Method Practical SWS Auessmenl Oetedetl Monitoring Cons[Ruent Reporting Sample Oete - DuamitMion Reporting Upgradient Monitoring W011S Compliance Do -gradient Monitoring Walla Monitorng Sentlnel Monitorng Wells Blanka Units Date Limn Limit Limh MW-13 MW-1I 11.1 11.2 II-S INA II.S II-fi II-] II-78 II.B II-12 Well IISB II4 8MW4 8MW-3 BMWd Chi foon ugIL 03/01/J9 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- -- NC2L=70 ug/L ugIL 09/01/99 - - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- -- EPAMCL=80 ug/L UgIL 03101I00 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- -- ugIL 09/01I00 - - 5 ND NO NO NO NO - NO NO NO NO NO - - -- -- -- -- -- ugIL 0310, 101 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO -- ND -- -- -- -- ugIL 09/01101 - - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- -- ugIL 03/01102 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - ND -- -- -- -- ugIL 0910, 102 - - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- -- UgIL .115103 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- -- ugIL 10/01/03 - - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- -- UgIL 03I01/04 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO -- ND -- -- -- -- ugIL 0910, 104 - - 5 NO NO NO NO NO - NO NO NO NO NO - - - - - UgIL 05101/OS -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO -- NO - -- -- -- ugIL 1010,105 - - 5 NO NO NO NO NO - NO NO NO NO NO - - - - - - - UgIL 0410,106 -- -- -- - - ug/L 101011O6 - - 5 NO NO NO NO NO - NO NO NO NO NO - - - -- -- -- -- UgIL 04/12107 -- -- -- NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ugIL 09/2817 -- -- NO NO NO NO NO - NO - NO NO NO - - -- -- -- -- ND UgIL 04/29/08 0.2 -- 5 NO NO NO NO NO - NO NO NO NO NO NO - -- -- -- -- NO ugIL 12/01/08 0.2 - 5 NO NO NO NO NO - NO NO NO NO NO NO - -- -- -- -- NO ugIL 04/17/09 0.2 -- 5 NO NO NO NO NO - NO NO NO NO NO NO -- -- -- -- -- -- ugIL 10/18/09 0.2 - 5 NO NO NO NO NO - NO NO NO NO NO - - - - - NO UgIL 04/28/10 0.2 -- 5 NO NO NO NO NO -- NO NO NO NO NO NO -- - -- -- -- -- ug/L OS/02I10 0.2 - 5 - - -- NO NO NO NO ugIL 10/11/10 0.2 -- 5 NO NO NO NO NO - NO NO NO NO NO NO - -- ND NO NO ND ugIL O5/09Ill 0.7 - 5 NO NO NO NO NO - NO NO NO NO NO NO NO ugIL 10/12111 0.7 -- 5 ND ND ND ND NO - ND ND ND ND ND ND ND ND ND ND ND ND ugIL 04/17/12 0.18 - 5 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO ugIL 10/25/12 0.18 -- 5 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO NO ugIL OS/02113 0.18 - 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 09/24/13 0.18 -- 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/24/14 0.18 - 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 10/0614 0.18 -- 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL W1415 0.18 - 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/07/15 0.18 - 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/20/16 0.18 - 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09126/16 0.18 -- 5 NO NO NO NO NO NO NO NO NO ND NO NO NO NO NO NO NO ugIL 04/25/17 0.18 - 5 NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10H 7/17 0.18 -- 5 NO NO NO NO NO NO NO NO NO NO NO ND NO ND NO NO NO ugIL 04I16/18 0.18 5 NO NO ND NO NO NO NO NO NO NO NO NO NO NO ND NO NO NO ugIL 10116/18 0.18 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04I12/19 0.18 1.0 - NO 0.81 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO UgIL 10,07119 0.18 1.0 -- NO 0.63 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/20120 0.18 1.0 - NO 0.69 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO UgIL ugIL 10/13120 04/28121 0.18 0.18 1.0 1.0 -- NO NO NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO NO NO NO NO NO ND 12-Dlchlorobenzena ug/L 03/01189 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO NC 2L=20uWL UgIL 09/01199 -- 5 NO NO NO NO ND - NO NO NO NO NO - - -- -- -- -- NO EPA MCL=600 ugIL U9/L 03/01I00 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO UgIL 09/01100 -- 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO U9/L 03/01I07 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO UgIL 09101101 -- 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ug/L 03/01IO2 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO UgIL 09/01102 -- 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ug/L 04/15103 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO UgIL 10/01103 -- 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ug/L 03101I04 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO UgIL 03I01104 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO ugIL 09/01I04 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO UgIL O5101I05 -- -- 5 NO NO NO NO ND - NO NO NO NO NO NO - NO -- -- -- NO ug/L 10/0= -- -- 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ugIL 04/01I06 -- -- -- - - - UgIL 10101106 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ug/L 04/12107 -- NO NO 0.32 J NO NO - NO 0.41 J NO NO NO - - -- -- -- -- NO ug/L 09/26107 -- NO NO 0.48 J NO NO - NO NO NO NO - -- -- -- -- NO ugIL 04/29108 0.27 -- 5 NO NO NO NO NO - NO NO NO NO NO NO - -- -- -- -- NO ug/L 12/01108 0.27 -- 5 NO NO NO NO NO - NO NO NO NO NO NO - -- -- -- -- NO ugIL 04/17109 0.27 -- 5 NO NO NO NO NO - NO NO NO NO NO NO - -- -- -- -- NO ug/L 10116I09 0,27 -- 5 NO NO NO NO NO - NO 0.47 J NO NO NO - -- -- -- -- NO ugIL 0128110 0.052 -- 5 NO NO NO NO NO - NO 0.43 J NO NO NO NO - -- NO ug/L OM /10 0.27 -- 5 - - -- NO NO NO NO ugIL 10/11110 0.27 -- 5 NO NO 0.43 J NO NO - NO 0.51 J NO NO NO NO - -- NO NO NO NO ug/L 05109Ill 0.11 -- 5 NO NO NO NO NO - NO NO NO NO NO NO NO ugIL 10/12111 0.11 -- 5 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/17112 0.19 -- 5 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO ugIL 10/25/12 0.19 -- 5 NO NO 0.41 J NO NO - NO 0.5 J NO NO NO NO NO NO NO NO NO ND ugIL 05/02113 0.19 -- 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND ug/L 09/24/13 0.19 -- 5 NO NO NO NO NO NO NO 0.5 J NO NO NO NO NO NO NO NO NO NO ugIL 04/24/14 0.19 -- 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/06/14 0.19 -- 5 NO NO 0.61 J NO NO NO NO 0.46 J NO NO NO NO NO NO NO NO NO NO ugIL 04/14/15 0.19 -- 5 NO ND NO ND ND NO ND NO ND ND ND NO NO NO NO NO NO ugIL 10/07/15 0.19 - 5 NO 0.48 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/20/16 0.19 - 5 NO NO 0.55 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/26/16 0.19 - 5 NO 0.57 J NO NO NO NO 0.55 J NO NO NO NO NO NO NO NO NO NO u9/L 04I WW 0.19 - 5 NO NO 0.44 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/17/17 0.19 - 5 NO 1.0 J NO NO NO NO 0.72 J NO NO NO NO NO NO NO NO NO NO ugIL 04/16/16 0.19 5 NO NO 0.41 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/16/18 0.19 1.0 - NO 0.57 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/12/19 0.19 1.0 - NO NO 0.55 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/07/19 0.19 1.0 - NO ND 0.87 J NO NO NO NO 0.38 J NO NO NO NO NO NO NO NO NO NO ugIL 04120/20 0.19 1.0 -- ND NO 0.54 J ND ND NO ND NO ND ND ND ND NO NO NO NO NO NO ug/L u /L 10113/20 04128/21 0.19 0.19 1.0 1.0 -- ND NO ND NO a." NO J ND NO ND NO NO NO ND NO ND NO ND NO ND NO ND NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO 1,4Dlchlorobenzena ugIL 03/01/99 -- -- 5 NO NO NO NO NO - NO 3A NO NO NO NO - NO - -- -- NO NC 2L=6 ugIL ugIL 09101/99 -- - 5 NO NO NO NO NO - ND NO NO NO NO - - - -- NO EPA MCL=75 UgIL ugIL 03101/00 -- -- 5 NO ND ND ND ND -- NO ND ND NO ND NO -- NO - -- -- NO ug/L 09101/00 - - 5 ND NO NO ND NO - NO NO NO NO NO - - - -- NO ug/L 03101/Ot -- -- 5 ND NO NO ND NO -- NO NO NO NO NO NO -- NO -- -- -- NO ug/L 09101/01 - - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- NO ug/L 03I01/02 -- 5 NO NO NO NO NO -- NO NO NO NO NO NO -- NO -- -- -- NO ugIL 09I01/02 - - 5 ND ND ND ND NO - NO NO NO NO NO - - - - -- -- NO ug -- 5 ND ND ND ND ND -- NO NO NO NO NO - -- -- -- -- -- NO ug/L 10I01/03 - - 5 ND NO NO NO NO - NO NO NO NO NO - - -- -- NO ugIL 03I01114 -- 5 ND NO NO NO NO -- NO NO NO NO NO NO -- NO -- -- -- NO ugIL 03I01/04 - - 5 NO NO NO NO ND - NO NO NO NO NO ND - NO - -- -- NO ee -- 5 NO NO NO NO NO -- NO NO NO NO NO - -- -- -- -- -- NO ugIL 05I01/OS - - 5 NO NO NO NO NO - NO 5.0 NO NO NO NO - NO - -- -- NO ugIL 10/01I06 -- 5 NO NO 6.0 NO NO - NO 7.0 NO NO NO -- -- - - -- -- NO u9/L 04I01/O6 - - - - - - - - - ug/L 10101/06 -- 5 ND NO NO ND NO -- ND NO NO ND NO -- -- - - -- -- NO ugIL 04/12/07 - - - NO NO NO NO NO - NO 3.3 NO NO 0.89 J - - - - - - NO ugIL 09/26/07 -- ND NO 5.0 NO NO -- 0.93 J -- NO NO 0.90 J -- -- - - - -- NO ug/L 04/29/08 0.20 - 1 ND ND ND ND ND - ND ND NO NO 11.73 J NO - - - - - NO ug/L 12101/08 0.38 -- 1 ND ND ND ND ND -- ND ND NO NO 0.59 J NO - - -- -- -- NO ugIL 02I13/09 0.38 - 1 - 4A - - - - - NO ug/L 04I1 ]/09 0.38 -- 1 NO NO NO NO NO -- NO NO NO NO NO NO - - -- -- -- NO ug/L 10116/09 0.38 -- 1 NO NO 6.9 Of J NO - NO 3.8 NO NO NO - - - - - - NO ugIL 04128/10 0.10 -- 1 NO NO 6.5 0.61 J NO -- NO 3.4 0.53 J NO 0.55 J NO -- - NO ug/L 08/02/10 0.38 - 1 - - - - - - - - - - - - - - NO NO NO NO ug/L 10/11/10 0.38 - 1 NO NO 7.5 0.54 J NO -- 05 J 47 NO NO 0.56 J NO -- - NO NO NO NO ugIL 05109/11 0.79 - 1 NO ND 4.0 0.87 J ND - ND NO NO ND NO NO NO ug/L 10112/i1 0.79 -- 1 ND NO NO NO NO -- ND ND NO NO ND ND NO NO NO NO NO NO ug/L 04117/12 OA9 - 1 NO NO 4.6 0.55 J NO - NO 0.51 J 0.42 J NO 0.52 J NO NO NO NO NO NO ugIL 10125/12 0.19 - 1 NO NO 7.7 0.94 J NO - NO 4.8 NO ND 0.44 J ND NO NO NO NO NO NO ugIL 05/02/13 OA9 - 1 NO NO 3.4 1.2 NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/24113 0.19 -- 1 NO NO 4.3 1.5 NO 0.87 J NO 3.2 NO NO NO NO NO NO NO NO NO NO ugIL 04/24114 0.19 - 1 NO NO 5.6 2.0 NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10108Ill 0.19 - 1 NO NO 8.2 1.3 NO 0.96 J NO 3.8 NO NO NO NO NO NO NO NO NO NO ugIL 04/14115 0.19 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 1010]115 0.19 - 1 NO - ].6 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO UgIL N120116 0.19 -- 1 NO NO ].9 2.5 NO 1.0 NO 0.72 J NO NO NO NO NO NO NO NO NO NO ug1L 09/26/16 0.19 - 1 NO NO 2.2 NO 1.2 NO 4.3 NO NO NO NO NO NO NO NO NO NO ugIL 04125/17 0.19 -- 1 NO NO 5.3 3.0 0.55 J 1.6 NO NO NO NO NO NO NO NO NO NO NO NO ugIL 1017117 0.19 - 1 NO 16 3.3 0.57 J 1.4 NO 5.9 NO NO NO NO NO 0.40 J NO NO NO NO ugIL 04/16/18 0.19 -- 1 NO NO 6.5 3.1 0.53 J 1.5 NO 0.81 J NO NO NO NO NO NO NO NO NO NO ugIL 10/i6/18 0.19 1.0 - ND 9.] 3.2 OA8 J 1.6 NO 2.3 NO NO NO NO NO NO NO NO NO NO ugIL 04/12/19 0.19 1.0 - NO NO ].9 3.3 NO 1.1 NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/07/19 0.19 1.0 - NO NO 14 3.3 0.35 J 1.2 NO 3.6 NO NO NO NO NO NO NO NO NO NO ugIL 04/20/20 0.19 1.0 - NO NO 7.5 2.5 NO 0.76 J NO 1.1 NO NO NO NO NO ND NO NO NO NO ugIL 10/13/20 0.19 1.0 - NO NO 6.] 3.0 NO 1.4 NO 2.7 NO NO NO NO NO 0.43 J NO NO NO NO ug/L 04/28/21 0.19 1 a NO NO 8.7 2.4 NO 0.66 J NO NO NO NO NO NO NO NO NO 0.44 J NO NO 1,1-Dichloroethane u9/L 03101/99 - - 5 NO NO ND 13 NO - 28 NO SS NO 7.9 NO -- NO - - - NO NC 2L=6 ugIL ugIL 09I01/99 - -- 5 ND NO NO 9.2 NO -- 13 NO 12 NO 7.4 -- -- - - - - ND (NO EPA MCL) ugIL 03/01/00 - - 5 NO NO NO NO NO -- NO NO 7.5 NO 5.1 NO -- NO - - - NO ugIL 09101/00 - - 5 NO NO NO 6.3 NO -- 11 NO 5.9 NO 5.3 -- -- - - - - NO ugIL O3/01/01 - - 5 NO NO NO NO NO -- 10 NO 9.7 NO 5.0 NO - NO - - - NO ugIL 09/01/01 - - 5 NO NO NO 9.5 7.0 -- 11 NO 69 NO NO -- -- - - - - NO ugIL 03/01/02 - - 5 NO NO NO 9.1 NO -- 8.7 NO NO NO NO NO - NO - - - NO ugIL 09/01/02 - - 5 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO ugIL Wl W03 - - 5 NO NO NO NO NO -- 6.3 NO NO NO NO -- -- - - - - NO ugIL 10/01/03 - - 5 NO NO NO 7.8 NO -- 5.8 NO 5.6 NO NO -- -- - - - - NO ugIL ON01104 - - 5 NO NO NO NO NO -- 5.5 NO 6.9 NO NO NO -- NO - - - NO ugIL 09/01/04 -- -- 5 NO NO NO 20 5.4 -- 7.] NO NO 5.7 NO -- -- - - - - NO ugIL OW01105 - - 5 NO NO NO 12 6.0 -- 5.0 NO 9.0 5.0 NO NO -- 25 - - - NO ugIL 10/01/05 -- -- 5 NO NO NO 17 8.0 -- 5.0 NO 9.0 NO NO -- -- - - - - NO ugIL 04/01/06 - - - -- -- - -- -- -- ugIL 10/011O6 -- -- 5 NO NO NO 16 7.3 - NO NO NO NO NO -- - - - - - NO ugIL 04/12107 - - - NO NO 1.7 J 11 8.9 - 2.0 J 0.09 2.6 J 2.7 J 1.2 J - - - - -- -- NO ugIL 09/26107 -- ND ND 2.8 J 14 8.0 - 1.6 J - 2.9 J 2.5 J 1.1 J - - -- -- -- -- NO ugIL 04/29I08 033 -- 5 NO NO 1.1 J 15 12 - NO NO NO 2.0 J 1.2 J NO - -- -- -- -- NO ugIL 12/01108 0.33 - 5 NO NO 2.5 J 15 16 - NO NO NO 1.2 J 1.2 J NO - -- -- -- -- NO ugIL 04/17I09 0.33 - 5 NO NO 1.5 J 11 12 - NO NO 0.72 J 0.89 J 0.87 J NO - -- -- -- -- NO ugIL 10I1fi109 0.33 - 5 NO NO 3.0 J 1] 12 - 0.62 J NO 1.7 J 0.49 J 0.13 J - -- -- -- -- NO ugIL 04I28I10 0.05 - 5 NO NO 2.3 J 16 15 - 0.91 J NO 1.1 J NO 0.79 J NO - - NO ugIL 08IO2I10 0.33 -- 5 - - -- NO 4.2 J NO NO uglL 10111/10 0.33 -- 5 NO NO 3.0 J 17 15 - 0.74 J NO 0.42 J NO 0.83 J NO - -- NO 3.8 J NO NO ugIL OSI09111 0.08 - 5 ND ND 1.1 J 18 14 -- NO ND NO ND 0.79 J ND NO ug/L 10112/11 0.08 -- 5 NO ND 1.] J 12 11 - ND ND ND ND ND ND 0.88 J 5.8 ND 0.88 J ND ND ugIL 04I17/12 0.13 - 5 NO NO 1.2 J 9.3 12 - NO NO 0.65 J O.fi4 J 0.66 J NO 6.9 NO 5.4 NO NO ugIL 1012512 0.13 -- 5 NO NO 1.6 J 11 14 - NO NO 0.79 J 0.85 J NO NO 0.90 J NO NO 5.0 ND NO ugIL OS/02/13 0.13 - 5 NO NO 0.77 J 16 17 NO NO NO 0.90 J 0.53 J NO 0.74 J 7.9 NO 4.5 J NO NO ugIL 09/2413 0.13 -- 5 ND ND 0.89 J 11 10 1.4 J 0.44 J ND NO NO 0.46 J ND 0.90 J NO NO 5.6 NO NO ugIL 04/24/14 0.13 - 5 NO ND 0.79 J 10 15 NO ND ND 0.54 J 0.42 J ND 0.80 J NO NO NO NO NO ugIL 1OM614 0.13 -- 5 NO NO 0.53 J BA 11 1.2 J NO NO NO NO NO NO NO NO NO NO ND NO ug/L 04/14/15 0.13 - 5 NO NO 0.45 J 7.1 14 1.2 J NO NO NO 0.89 J 0.13 - 0.96 J 5.7 NO NO NO NO ugIL 1OM715 0.13 -- 5 NO 0.86 J NO 14 0.99 J NO NO NO 0.79 J NO NO NO 5.8 NO 3.7 J NO NO ug/L ("0/16 0.13 - 5 NO NO 0.46 J 9.5 12 0.95 J NO NO NO 1.2 J NO NO 0.9 J 0.42 J NO 5.5 NO NO ugIL 09/26/1fi 0.13 -- 5 NO 0.76 J 8.6 12 1.0 J NO NO NO 0.63 J NO NO 0.81 J 4.6 NO NO NO NO ugIL 04125/17 0.13 -- 5 NO NO NO 7.5 12 0.80 J NO NO NO 1.0 J NO NO 0.91 J 3.8 J NO 0.51 J ND NO ugIL 1017117 0.13 - 5 NO 0.54 J 8.3 10 0.85 J NO NO NO 1.0 J NO NO 0.66 J 4.0 J NO 4.6 J NO NO ugIL 0 16/18 0.13 -- 5 NO NO NO 7.2 11 0.77 J NO NO NO 1.7 J NO NO 0.91 J 2.] J NO 7.8 NO NO ugIL 1016118 0.13 1.0 - NO NO 5.3 5.5 0.55 J NO NO NO 1.1 NO NO NO NO NO 1.1 NO NO ug1L 04/12/19 0.13 1.0 - NO NO NO 4.8 4.4 NO NO NO NO 0.99 J NO NO 0.66 J 0.41 J NO 4.2 NO NO ugIL 10/07/19 0.13 1.0 - NO NO NO 5.4 4.2 0.55 J NO NO NO 1.6 NO NO 0.73 J 2.4 NO 4.9 NO NO ugIL 04/20/20 0.13 1.0 - NO NO NO 4.0 3.8 NO NO NO NO 1.4 NO NO 0.72 J 0.88 J NO 3.6 NO NO ugIL u L 10/13/20 04/M21 0.13 0.13 1.0 1.0 - NO NO NO NO NO NO 4.4 2.9 2.7 1.8 0.66 NO J NO NO NO NO NO NO 1A 1.5 NO NO NO NO 0.78 J 0.74 J 2.2 NO NO NO 1.7 3.7 NO NO ND I ND R GeLG!■ 6ofl2 August 2021 TABLE 4 S-q of Grondwater Monitoring Resits Detected Conatiteete White Street L-dfill - Phase 11, Permit No. 41413 Greensboro, North Caroline Method Practical SINS Auessmenl Oetedetl Monitoring Cons[nuent Reporting Sample Oetedion DuamitMion Reporting Upgradient Monitoring Welle Compliance Downgradient Monitoring Walla Monitorng Sentinel Monitorng Wells Blanks Unite Date Limn Limit Limn MW-13 MW-1I 11.1 11.2 II-S INA II.S II-fi II-] II-]B II.B II-12 Well IISB III 8MW4 8MW-3 BMWd 1,2-DicM1loreetM1ene ugIL 03101/99 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO -- ND -- -- - NO NC 2L=0.4 ugIL ugIL 09/01IN - - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- ND EPA MCL=Sug/L ugIL 03/01/00 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - ND -- -- -- ND ugIL 09/01/00 - - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- ND ugIL 03/01/01 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - ND -- -- -- ND ugIL 09/01/01 - - 5 NO ND NO NO NO - NO NO NO NO NO - - - - NO ugIL 03I01102 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- NO ugIL 09/01/02 - - 5 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO ugIL 04/15103 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - -- - -- -- -- ND ugIL 10/01/03 - - 5 NO ND NO NO NO - NO NO NO NO NO - - - - NO ugIL 03101/04 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- NO ugIL 09/01/04 - - 5 NO NO NO NO NO - NO NO NO NO NO - - - - NO ugIL OS/01105 -- -- 5 NO NO NO NO NO -- NO NO NO NO NO NO -- ND - -- -- ND ugIL 10/01/05 - - 5 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO ugIL 04/01/06 -- -- -- - - - ug/L 10/01/06 - - 5 NO NO NO NO NO - NO NO NO NO NO - - - - -- -- NO ugIL 04/12/07 -- -- -- NO NO NO NO NO - NO NO NO NO NO - - - -- -- -- ND ugIL 09/28/07 -- - - NO NO NO NO NO - NO - NO NO NO - - - -- -- -- ND ugIL 04/29/08 0.46 -- 1 NO NO NO NO NO - NO NO NO NO NO NO -- - - -- -- ND ugIL 12101/08 0.65 - 1 NO NO NO NO NO - NO NO NO NO NO NO - - - - - NO ugIL 04/17/09 0.65 -- 1 NO NO NO NO NO - NO NO NO NO NO NO -- - -- -- -- ND ugIL 10/18/09 0.65 - 1 NO NO NO NO NO - NO NO NO NO NO - - - - - NO ugIL 04/28/10 0.65 -- 1 NO NO NO NO NO - NO NO NO NO NO NO -- - NO ILOB/02I10 0.65 - 1 - - - NO NO NO NO ugIL 10/11/10 0.65 -- 1 NO NO NO NO NO - NO NO NO NO NO NO -- - ND ND ND NO ugIL 05/09Ill 0.47 - 1 NO NO NO NO NO - NO NO NO NO NO NO NO ugIL 1 01 2111 0.47 -- 1 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/1]/12 0.21 - 1 NO NO NO NO NO -- NO NO NO NO NO NO NO NO NO NO NO ugIL 10/25/12 0.21 -- 1 NO NO NO NO NO -- NO NO NO NO NO NO NO NO NO NO NO NO ugIL OS/02113 0.21 - 1 NO NO NO 0.40 J NO ND NO ND NO NO NO NO NO NO NO NO NO ug/L 09/24/13 0.21 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL W2414 0.21 - 1 NO NO NO NO NO ND ND ND ND NO NO NO NO NO NO NO NO ugIL 10/06/14 0.21 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/14/15 0.21 - 1 ND ND ND NO NO ND ND ND NO NO NO NO ND NO NO NO NO ugIL 1010]/15 0.21 -- 1 NO NO ND ND NO ND ND NO NO NO NO NO NO NO NO NO NO ugIL 04/20/16 0.21 - 1 NO ND NO ND ND NO ND ND ND NO NO NO NO NO NO NO NO NO ugIL 09126/16 0.21 -- 1 ND ND NO ND ND ND ND ND ND ND NO NO NO NO NO NO NO ug/L 04I25/167 0.21 - 1 NO ND NO NO ND ND ND ND ND ND ND NO NO NO NO NO NO NO ug/L 1017 ]li] 0.21 -- 1 ND NO NO ND ND ND ND ND ND ND NO NO NO NO NO NO NO ugIL 04/16/18 0.21 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10I76I18 0.21 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/12119 0.21 1.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND ugIL 10/0]H9 0.21 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO ugIL 04/20120 0.21 1.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND NO NO ND ugIL u IL 10/13/20 04128/21 0.21 0.21 1.0 1.0 -- NO NO NO ND NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ND ND ND ND 1,1-Dichloroethene ugIL 03/01/99 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO NC2L=]ugIL ug/L 09M IN -- 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO EPA MCL=]ugIL ugIL 03/01I00 -- -- 5 NO NO NO NO NO - NO NO ND ND ND NO - NO -- -- -- ND ug/L 09/01/00 - - 5 NO NO NO ND NO - NO NO ND ND ND - -- -- -- NO ugIL 0310,101 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- ND ug/L 09/01/01 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - -- -- -- NO ugIL 0310,102 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO ug/L 09/01/02 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - - - -- -- -- NO ugIL 04/1513 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - - - -- -- -- ND ug/L 10/01/03 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - -- -- -- NO ugIL 03/01IN -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO ug/L 09/01/04 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - -- -- -- ND ugIL O5/0,105 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- - - NO ug/L 10/01lo -- -- 5 NO NO NO NO NO - NO NO NO NO NO - - - - -- -- NO ugIL 04/01/06 -- -- -- - - - uglL 1010, IN -- -- 5 NO NO NO NO NO - NO NO NO NO NO - - - - -- -- NO ugIL 04/12107 -- -- -- NO NO NO 0.50 J NO - NO NO NO NO NO - - - - -- -- ND ugIL 09128I07 -- NO NO NO 0.52 J NO - NO NO NO NO - - - -- -- NO ugIL 04/29IN 0.20 -- 5 NO NO NO 0.47 J NO - NO NO NO NO NO NO - - - -- -- NO ugIL 12101/O8 0.24 -- 5 NO NO NO NO NO - NO NO NO NO NO NO - - - -- -- NO ugIL 04/17109 0.24 -- 5 NO NO NO NO NO - NO NO NO NO NO NO - - - - - NO ug/L 10/i8109 0.24 -- 5 NO NO NO 0.80 J NO - NO NO NO NO NO - - - - - ND ugIL 04/28/10 0.15 -- 5 NO NO NO 0.45 J NO - NO NO NO NO NO NO - - NO ug/L OB/02I10 0.24 -- 5 - - -- NO NO NO NO ugIL 10/11/10 0.24 -- 5 ND NO ND 0.49 J NO - NO NO NO NO NO NO - -- ND ND ND NO ug/L OS/09/11 0.60 -- 5 NO NO NO NO NO - NO NO ND NO NO NO ND ugIL 10/1011 0.60 -- 5 NO NO NO NO NO - NO NO ND ND NO NO NO NO NO NO NO NO ugIL 04/1]112 0.21 -- 5 NO NO NO NO NO - NO NO ND NO NO NO NO NO NO NO NO ugIL 10/25/12 0.21 -- 5 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO NO ugIL OS/02113 0.21 -- 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/24/13 0.21 - 5 NO NO NO NO NO NO NO ND ND NO NO NO NO NO NO NO NO NO ugIL O12V 4 0.21 - 5 NO ND NO NO NO NO ND ND ND ND ND ND NO NO NO NO NO ug/L 10/0W 4 0.21 - 5 NO NO NO ND ND ND NO NO ND ND ND ND ND NO NO NO NO NO ugIL W1415 0.21 - 5 ND ND ND ND ND ND ND ND ND ND ND ND NO NO NO NO NO ugIL 10/0]/15 0.21 - 5 ND ND ND ND ND ND ND ND ND ND ND ND ND NO NO NO NO ugIL 04/20/16 0.21 - 5 ND ND ND NO NO NO NO NO NO NO ND NO ND NO NO NO NO NO ugIL 091M 6 0.21 - 5 ND ND ND NO NO NO NO NO NO NO NO ND NO NO NO NO NO ugIL 04125/1] 0.21 -- 5 ND ND ND ND ND ND ND ND ND ND ND ND ND NO NO NO NO NO ugIL loll 7/17 0.21 -- 5 NO ND NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04116/18 0.21 5 ND ND ND ND ND ND ND ND NO NO NO NO NO NO NO NO NO NO ug/L 10/16/1a 0.21 1.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO ugIL 04112/19 0.21 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO ND ugIL 10/07/19 0.21 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ugIL 04/20/20 0.21 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ugIL ",IL 10/13120 O 121121 0.21 0.21 1.0 1.0 -- NO ND NO NO NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND NO ND NO ND NO ND NO ds1,2-Dichloroethene ugIL 03/01I9B -- -- 5 NO NO NO NO ND - NO ND ND ND ND ND - ND -- -- -- ND NC 2L=]0 ugIL ugIL 09/01199 -- -- 5 NO NO NO NO NO - NO NO NO NO NO No EPA MCL=]0 ug/L ugIL 03/01I00 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - ND -- -- -- ND ugIL 09/01I00 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- ND ugIL 03/01I01 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - ND -- -- -- ND ugIL 09/01101 -- -- 5 NO NO NO NO NO - NO NO d4 NO NO - - -- -- -- -- ND ugIL 03101IO2 -- - 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- ND ugIL 09/01102 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- ND ugIL 04/15103 -- - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- ND ugIL 10/01103 -- -- 5 NO NO NO NO NO - NO NO 6.0 NO NO - - -- -- -- -- ND ugIL 03101I04 - - 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- ND ugIL 09/01104 -- -- 5 NO NO NO 5.2 NO - NO NO NO NO NO - - -- -- -- -- ND ugIL 05/01I05 -- - 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- ND ugIL 10/01105 -- -- 5 NO NO NO 5.0 NO - NO NO NO NO NO - - -- -- -- -- ND ugIL 04/01/06 -- - -- ugIL 10101I06 -- -- 5 NO NO NO ].9 NO - NO NO NO NO NO - - -- - -- -- ND ugIL 04/12107 -- - -- NO NO NO 6.8 NO - NO NO 1.1 J NO NO - - -- -- -- -- NO ugIL 09/26/07 -- NO NO NO NO NO - NO - 1.3 J NO NO - - -- -- -- -- NO ugIL 04/29100 030 - 5 NO NO NO 12 NO - NO NO NO NO NO NO - -- -- -- -- NO ugIL 12/01I08 0.36 -- 5 NO NO 0.]i J 11 0.52 J - NO NO NO NO NO NO - -- -- -- -- ND ugIL 04/1]109 0.36 - 5 NO NO 1.0 J 11 0.52 J - NO NO 2.3 J NO NO NO - -- -- -- -- ND ugIL 10/161D9 0.36 -- 5 NO NO 3.0 J 20 0.46 J - NO NO 0.94 J NO NO - -- -- -- -- ND ugIL 04/2811/ 0.075 - 5 NO NO 3.3 J 20 0.66 J - NO NO 3.6 J NO NO NO - ND ugIL 08I02110 0.36 -- 5 NO 4.9 J 20 - 0.71 J NO - 20 ND 6.9 ND ND ugIL 10/11/10 0.36 - 5 NO NO 4.2 J 23 0.88 J - NO NO NO NO NO NO - -- ND ND ND ND ugIL O5I09111 0.72 -- 5 NO NO 0.88 J 21 1.7 J - NO NO NO NO NO NO ND ugIL 10/12111 0.72 - 5 NO NO NO 21 NO - NO NO NO NO NO NO NO i6 ND 1.2 J ND NO ugIL O4117112 0.15 -- 5 NO NO 2.1 J 17 0.66 J - NO NO 0.79 J 0.58 J 0.15 NO i6 ND 12 ND ND ugIL 10/25/12 0.15 - 5 NO NO 3.0 J 23 0.]3 J - NO NO 0.48 J 0.44 J NO NO NO 24 NO 12 NO ND ugIL OS/02113 0.15 -- 5 NO NO 1.3 J 29 1.0 J 0.15 0.15 0.15 0.15 0.15 NO 0.15 23 ND 14 ND ND ugIL 09/24/13 0.15 - 5 NO NO 2.6 J 26 0.68 J 0.8] J NO NO NO NO NO 0.]8 J NO 26 NO NO NO NO ugIL 04124/14 0.15 -- 5 NO NO 0.43 J 26 1.0 J NO NO NO NO NO NO NO NO NO 14 NO NO ugIL 1010614 0.15 - 5 NO NO 1.1 J 21 0.]4 J NO NO NO NO NO NO NO NO 17 NO NO NO NO ugIL 04/14/15 0.15 -- 5 NO NO NO 19 1.3 J 1.0 J NO NO NO NO NO NO NO NO 15 NO NO ugIL 10/0]/15 0.15 - 5 NO NO NO 0.85 J 0.60 J NO NO NO NO NO NO NO 13 NO ].6 NO NO ugIL O6/20118 0.15 -- 5 NO NO NO 21 1.1 J 0.82 J NO ND NO NO NO NO NO 0.83 J NO 12 NO NO ugIL 09/26/16 0.15 - 5 0.15 NO 20 1.1 J 0.15 0.15 0.15 0.15 0.15 0.15 0.15 NO 8.0 NO 12 NO NO ugIL 04/25/17 0.15 -- 5 NO NO NO 21 1.3 J 1.1 J NO NO NO NO NO NO NO 7.3 NO 1.0 J NO NO ugIL 10/17/17 0.15 - 5 ND ND 16 0.92 J 0.65 J ND ND ND ND ND NO NO 7.4 NO 11 NO NO u9/L 04/16/18 0.15 5 NO NO NO 19 1.3 J 0.83 J NO NO NO NO NO NO NO 4.4 J NO 22 NO NO ugIL 10/1 W18 0.15 1.0 - ND ND i6 0.91 J 0.82 J ND ND NO NO NO NO NO 0.53 J NO 2.7 NO NO u9/L 04/12/19 0.15 1.0 - NO NO NO 12 0.56 J NO NO NO NO NO NO NO NO 0.55 J NO 14 NO NO ugIL 10/07/19 0.15 1.0 - ND NO ND 13 0.69 J 0.62 J NO ND NO NO NO NO NO 2.9 NO 14 NO NO ugIL 04/20120 0.15 1.0 - NO NO NO 9.3 0.62 J 0.56 J NO NO NO NO NO NO NO 0.91 J NO 10 NO NO ugIL u L f0/13/20 04/28/21 0.15 0.15 1.0 1.0 - NO NO NO NO ND NO 8.] 5.6 0.55 J NO 0.80 J NO NO NO NO NO NO NO NO NO NO NO ND ND NO NO 2.6 ND NO NO 4.8 11 NO NO NO ND Bromomethane ugIL 03/01/99 - - 10 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - - SWSGPS=10 ug/L ugIL 09/01/99 - - 10 NO NO NO NO NO -- NO NO NO NO ND -- - - - - (NOEPAMCL) ugIL 03/01/00 - - 10 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - - uglL 09101/00 -- - 70 NO ND NO NO NO -- NO NO ND ND ND -- - - - - uglL 03/01/01 - - 10 ND ND ND ND ND -- ND ND ND ND NO NO -- NO - - - - uglL o9/01/01 -- - 10 NO ND ND ND ND -- ND ND NO NO ND -- - - - ugIL 03/01/02 - - 10 ND ND ND ND NO -- NO NO NO ND NO NO -- NO - - - - uglL 00/01/02 -- - 10 ND ND NO ND NO -- NO NO NO NO ND -- -- - - -- -- -- ugIL 04/16`03 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - - - - u9/L 10/01/03 -- - 10 NO NO ND NO NO -- NO ND ND ND NO -- -- - - -- -- -- ugIL 03101/04 - - 10 NO NO NO ND NO - NO NO NO NO NO NO - NO - - - - ug/L 09/01/04 -- -- 10 ND ND NO ND ND -- ND ND ND ND ND -- -- - - -- -- -- ugIL 05101/05 - - 10 NO NO NO NO NO - NO NO NO NO NO NO - NO - -- - -- u9/L 10I01/OS -- -- 10 ND ND ND ND ND -- NO NO NO NO NO - - -- -- -- -- -- ug/L 04101/O6 - -- - -- -- - - - - - u9/L 10101/06 - -- 10 ND ND ND ND ND -- ND ND ND ND NO -- -- - - - -- ugIL 04112/07 - - - ND NO NO NO NO - NO NO NO NO NO - - - - - - NO ugIL 09/26/O7 - -- - NO ND 2.1 J NO NO -- NO -- ND NO NO -- -- - - - -- NO ug/L 04129/OS 0.49 - 10 ND NO NO NO NO - NO NO NO NO NO NO - - -- -- -- NO ugIL 12101/OB 0.49 -- 10 NO NO NO NO NO -- NO NO NO NO NO NO -- - -- -- -- NO ug/L 04I17/09 0.49 - 10 NO NO NO NO NO - NO NO NO NO NO NO - - -- -- -- ug/L 10116/09 0.49 -- 10 NO NO NO NO NO - NO NO NO NO NO - -- -- -- -- -- NO ug/L 04/28/10 0.49 - 10 NO NO NO NO NO - NO NO NO NO NO NO - - ug/L 08102I10 0.49 -- 10 - - -- NO NO NO NO ug/L 10/11/10 0.49 - 10 NO NO NO NO NO - NO NO NO NO NO NO - -- NO NO NO NO ugIL 05IN 11 0.58 -- 10 NO NO NO NO NO - NO NO NO NO NO NO NO ugIL 10/12/11 0.58 -- 10 NO NO NO NO NO - NO NO NO NO NO NO NO NO ND ND NO ND ugIL 0411]112 O.14 -- 10 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO ugIL 10125112 0.14 -- 10 NO NO NO NO NO - NO NO NO NO NO NO NO ND NO ND ND NO ugIL 05/02113 0.14 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ugIL 09124113 0.14 -- 10 NO NO NO ND ND NO NO NO NO NO NO NO NO ND ND NO NO NO ugIL 04/24/14 0.14 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ugIL 10/06/14 0.14 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/14/15 0.14 -- 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/07/15 0.14 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/20/16 0.14 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/26/16 0.14 - 10 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9/L D4/25/17 0.14 - 70 NO NO NO NO NO NO NO ND NO NO NO NO NO NO NO NO NO NO ugIL 10/17/17 0.14 - f0 NO NO NO NO NO ND NO NO NO NO NO NO ND NO NO NO NO u9/L 04/16/18 0.14 10 NO NO NO NO NO NO NO ND ND ND ND ND ND NO NO NO NO NO ugIL 10/16/18 0.14 1.0 - NO NO NO NO NO NO NO NO NO NO ND NO NO NO NO NO NO uw 04I12119 0.14 1.0 - ND ND ND NO NO NO NO NO NO NO NO ND NO NO NO NO NO NO ugIL 10107/19 0.14 1.0 - ND ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04120/20 0.14 1.0 - ND ND ND ND ND NO ND ND ND ND ND NO ND NO NO NO NO NO ug/L u IL 10113/20 04128127 0.14 0.14 1.0 1.0 - NO ND NO ND NO ND NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO R GGLG!■ 7of 12 August 2021 TABLE 4 Smmary of Grondwater Monitoring Resits Detected Conatiteet$ White Street L-dfill - Phase 11, Permit No. 41413 Greensboro, North Caroline Method Practical SWS AuessmeM Oetedetl Monitoring Cons[nuent Reporting Sample Oete - DuamitMion Reporting Upgradient Monitoring Well$ Compllenoe DowngradieM Monitoring Walla Monitodng Sentlnel Monitorng Wells Blanks Units Date Limn Limit Limk MW-13 MW-1I 11.1 11.2 II-S INA II.S II-fi II-] II-]B II.B II-12 Well IISB II4 8MW4 8MW-3 BMWd Chloramethene ugIL 0&01 NJ9 -- -- 1 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- - NO NC 2L=3u91L ugIL 09/01/99 - - 100 NO NO NO NO NO - NO NO NO NO NO - -- -- -- ND (NO EPA MCL) ugIL 0310,/00 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- ND ugIL 09/01/00 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - NO ugIL 03101/01 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- - NO ugIL 09/01/01 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - NO ug1L 03/01/02 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- NO ugIL 09/01/02 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO ugIL 04/15/03 -- -- 10 NO NO NO NO NO - NO NO NO NO NO - -- - -- -- -- NO ugIL 10/01/03 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - NO ugIL 03/01/04 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- NO ugIL 09/01/04 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - NO ugIL 0&01/OS -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO - - - NO ugIL 10/01/05 - - 10 NO NO NO NO NO - NO NO NO NO NO -- -- - - - - NO ugIL 04/01/06 -- -- - - - - %uglL 10/01/06 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO L 04/12107 -- -- -- NO NO NO NO NO - NO NO NO NO NO - -- - - - -- NO ugIL 09/28/07 - - NO NO 0.43 J 0.18 NO - NO NO NO NO - - - - - NO ugIL 04/29/08 0.23 -- 1 NO NO NO NO NO - NO NO NO NO NO NO -- - - - - NO ug1L 12/01/08 0.34 - 1 NO NO NO NO NO -- NO NO NO NO NO NO -- - - - - NO ugIL 0417/09 0.34 -- 1 NO NO NO NO NO -- NO NO NO NO NO NO -- - - - - NO ugIL 10/18/09 0.34 - 1 NO NO NO NO NO -- NO NO NO NO NO -- - - - - NO ugIL 04/2&10 0.05 -- 1 NO NO NO NO NO -- NO NO NO NO NO NO -- - NO ugIL 0&02110 0.34 - 1 - - - 0.40 J 0.44 J 0.34 NO ugIL 10/11/10 0.34 -- 1 NO NO NO NO NO - NO NO NO NO NO NO -- - NO 0.61 J NO NO ugIL 0&09/11 0.55 - 1 NO NO NO NO NO -- NO NO NO NO NO NO NO ugIL 10/12111 0.55 -- 1 NO NO NO NO NO -- NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/17/12 0.13 - 1 NO NO NO NO NO -- NO NO NO NO NO NO NO NO NO NO NO ugIL 10/25/12 0.13 -- 1 NO NO NO NO NO -- NO NO NO NO NO NO NO NO NO NO NO NO IL ug13 0&021 0.13 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/24/13 0.13 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL W24114 0.13 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO uyL 10106/14 0.13 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/14/15 0.13 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10107/15 0.13 -- 1 ND NO ND NO NO ND NO NO NO NO NO NO NO NO NO NO NO ugIL 04120/16 0.13 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug& 09126/16 0.13 -- 1 NO NO NO NO NO NO NO NO ND NO NO NO NO NO NO NO NO ug/L 04/25/17 0.13 - 1 NO 0.74 J NO NO NO NO NO NO NO NO 0.56 J NO NO 0.49 J NO NO NO NO ug1L 10117117 0.13 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/16118 0.13 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 1016118 0.13 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug1L 04/12119 0.13 1.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/07119 0.13 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug1L 04Y20/20 0.13 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO ND ugIL u IL 10/13120 04 &21 0.13 0.13 1.0 1.0 -- NO NO NO NO NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND NO NO NO NO NO ND ND Methylene Chloride ugIL 03/01/99 - -- 10 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO NC 2L=5ug/L ugIL 09/01/99 -- -- 10 NO NO NO NO NO - NO NO NO NO NO - - - - NO EPA MCL=5ug/L ugIL 03/01,00 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- NO ugIL 09/01/00 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - NO ugIL 03/01/01 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO - NO - - - NO ugIL 09/01/01 -- -- 10 ND ND ND NO ND - NO NO NO NO NO - - - - NO ug1L 03/01/02 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO - - - NO ugIL 09/01/02 -- -- 10 NO NO NO NO NO - NO NO NO NO NO -- -- - - - - NO ug1L 04/15/03 -- -- 10 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO ugIL 10/01/03 -- -- 10 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ugIL 0&01/04 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO - - - NO ugIL 09/01/04 - - 10 NO NO NO ND ND - ND ND ND ND ND -- - - - ND ugIL 05/01/05 - - 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO - - - NO ugIL 1&01/O6 - - 10 NO NO NO NO NO - NO NO NO NO NO -- -- - - - - NO ugIL 04/01/O6 - - - - - - - - - uglL 10/01/OB -- -- 10 NO NO NO NO NO - NO NO NO NO NO - -- - - - - NO ugIL 04/12I07 - -- - NO NO NO NO NO - NO NO NO NO NO - -- - - - - NO ugIL 09/28/07 - NO NO NO NO NO - NO NO NO NO -- - - - - NO ugIL D4/29/08 0.24 - 1 NO NO NO NO NO - NO NO NO NO NO NO -- - - - - NO ugIL 12/01/08 0.53 - 1 NO NO NO NO NO -- NO NO NO NO NO NO -- - - - - NO ugIL W17/09 OM- 1 NO NO NO NO NO -- NO NO NO NO NO NO -- - - - - NO ugIL 10/1&09 0.53 - 1 NO NO NO NO NO -- NO NO NO NO NO -- - - - - NO ugIL 04/2&10 0.07 - 1 NO NO NO NO NO -- NO NO NO NO NO NO -- - NO ugIL 0&02110 0.53 - 1 -- -- -- -- -- -- -- - NO NO NO NO ugIL 10/11/10 OM- 1 NO NO NO NO NO -- NO NO NO NO NO NO -- - NO NO NO NO ugIL 0&09/11 0.14 - 1 NO NO NO NO NO -- NO NO NO NO NO NO NO ugIL 10ll Vll 0.14 - 1 NO NO NO NO NO -- NO NO NO NO NO NO NO NO NO NO NO NO ugIL W/17/12 0.23 - 1 NO NO NO NO NO -- NO NO NO NO NO NO NO NO NO NO NO u9/L 10/2&12 0.23 - 1 NO NO NO NO NO -- NO NO NO NO NO NO NO NO NO NO NO NO ugIL 0&02/13 0.23 - 1 NO NO NO ND 0.47 J ND NO NO ND NO NO NO NO NO NO NO NO ugIL 09124/13 0.23 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04124/14 0.23 -- 1 ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 10106/14 0.23 -- 1 ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04I14/15 0.23 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug1L 1010]115 0.23 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/20116 0.23 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/26116 0.23 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug1L UP25117 0.23 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND ugIL 1017111 0.23 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND ug1L U116/18 0.23 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/16/18 0.23 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL O6/12/19 0.23 1.0 -- NO NO NO NO NO NO NO NO NO NO NO 0.46 B NO NO NO NO NO 0.52 J ugIL 10/07/19 0.23 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL W20/20 0.23 1.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL u IL 10/1&20 06/28/21 0.23 0.23 1.0 1.0 -- NO ND NO NO NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO NO NO NO NO NO NO 2-Bufanone ugIL 03/01/98 - -- 100 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO NC 2L=4000 ugIL ugIL 09/0119: - -- 100 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO (NO EPA MCL) ugIL 03/01/00 - - 100 ND ND ND ND ND -- NO NO NO NO NO NO -- ND - - - ND ugIL 09/01/00 -- - 100 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ugIL 0&01/01 - - 100 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO ugIL 09/01/01 - - 100 NO NO NO NO NO -- NO NO NO 680 NO -- - - - NO ugIL 0&01/02 - - 100 ND ND ND ND ND -- NO NO ND 130 ND ND -- NO - - - NO ugIL 09/01/02 - - 100 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO ugIL 04/15/03 - - 100 ND ND ND ND ND -- NO NO ND ND ND -- -- - - - - NO ugIL 10/01/03 - - 100 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ugIL 03/01/04 - - 100 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO ugIL 09/01/04 - - 100 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ugIL 05/01/05 - - 100 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO ugIL 10101/05 -- - 100 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO ugIL 04101/06 - - - -- -- -- -- -- -- uglL 10101/06 - - 100 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO ugIL 04MM7 - - - NO NO NO NO NO -- NO NO NO 38 J NO -- -- - - - - NO ugIL 09126/07 - NO NO NO NO NO -- NO NO NO NO -- - - - - NO ugIL 04I29/W 0.44 - 100 NO NO NO NO NO -- NO NO NO NO NO NO -- - - - - NO ugIL 12101/08 1 - 100 NO NO NO NO NO -- NO NO ND NO NO ND -- - - - - NO ugIL 04117/09 1 - 100 NO NO NO NO NO -- NO NO ND ND ND NO - - - - - NO ugIL 10116/09 1 - 100 NO NO NO NO ND -- ND NO ND ND ND -- - - - - NO ugIL 04128/10 1 - 100 NO NO NO NO NO -- NO NO NO NO NO NO -- - NO ugIL 08102/10 1 - 100 -- -- -- -- -- -- -- - NO NO NO NO ugIL 10/11/10 1 - 100 NO NO NO NO NO -- NO NO NO NO NO NO -- - NO NO NO NO ugIL 1.3 - 100 NO NO NO NO NO -- NO NO ND NO NO ND NO ugIL 10109/11 1.3 - 100 NO NO NO NO NO -- NO NO NO NO NO NO NO NO NO NO NO ugIL 04117/12 0412&12 1.3 - 100 NO NO NO ND NO -- ND NO NO 17 J ND NO - NO NO NO NO NO ugIL 1.3 - 100 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO NO ugIL 05/02/13 OSI02/13 1.3 -- 100 ND NO NO NO NO NO NO NO it J NO NO NO NO NO NO NO NO ugIL 09124/13 1.3 - 100 NO NO NO NO ND 31 J NO NO NO 4.3 J NO NO NO NO NO NO NO NO u,i 04124/14 1.3 -- 100 ND ND ND NO ND NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10I06/14 1.3 -- 100 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/14115 1.3 -- 100 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug& 1010]115 1.3 -- IN NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/20116 1.3 -- 100 NO 1.3 NO NO NO NO NO NO NO NO NO NO NO NO NO NO 1.3 NO ugIL 09/26116 1.3 -- 100 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04M117 1.3 -- 100 NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND NO NO ND ugIL 1017117 1.3 -- 100 NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO NO ND ugIL 04116/18 1.3 100 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 1016118 1.3 5.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/12/19 1.3 5.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/07/19 1.3 5.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/20/20 1.3 5.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL u IL 10/13/20 04/28/21 1.3 1.3 5.0 5.0 - NO ND NO NO NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO NO NO NO NO NO ND rym a ugIL 03/01/99 - - 10 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - - WSGPS=70 ug/L ugIL 09/01/99 - - 70 NO NO NO NO NO -- NO NO NO NO NO -- - - - MCL 100 ugIL ugIL 03/01/00 - - 10 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - - uglL 09/01/00 - - 70 NO NO NO NO NO -- NO NO NO NO NO -- - - - - ug/L 03/01/01 - - 10 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - - uglL 09/01/01 -- - 70 NO NO NO NO NO -- NO NO NO NO NO -- - - - - uglL 03/01/02 - - 10 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - - ug& 09/01/02 -- - 70 NO NO NO NO NO -- NO NO NO NO ND -- -- - - - - - ug/L 04/15/03 - - 10 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - - uglL 10/01/03 -- - 10 NO NO NO NO NO -- ND NO NO NO NO -- -- - - -- -- -- ugIL 03101/04 - - 10 NO NO NO NO NO -- NO NO NO NO NO NO - NO - - - - uglL 03101/04 -- - 10 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - -- -- -- ugIL 09101/04 - - 10 NO ND NO ND NO - NO NO NO NO NO - - - - - ug& 05/01/05 -- - 10 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - -- -- -- ugIL 10101/05 - -- 10 NO NO NO NO NO - NO NO NO NO NO - - - - - - - ug/L 04/01/06 -- -- - -- -- -- ug/L 1010IM6 - - 10 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - - uglL 04112/07 -- -- - NO NO NO ND NO -- ND NO NO NO NO -- -- - - - -- - uglL 09/2&07 - NO NO NO NO NO - NO NO NO NO - - - - - NO ugIL 04/29/08 0.20 -- 1 NO NO NO NO NO -- NO NO ND ND ND NO -- - - - -- NO ugIL 12101/08 0.26 - 1 NO NO NO NO NO - NO NO ND ND ND NO - - - - - NO ugIL 04/17/09 0.26 -- 1 NO NO NO NO ND -- ND ND ND ND ND NO -- - - - -- ug/L 1011&09 0.28 - 1 ND ND ND ND ND - ND NO ND NO ND - - NO ug/L 0412&10 0.26 -- 1 NO NO NO NO NO -- NO NO ND ND ND NO -- NO NO NO ug/L 04I29/10 0.082 - 1 - NO NO NO - - - - NO NO - - - NO NO ug/L 08102/10 0.26 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- - - NO NO NO NO ug/L 10111/10 0.26 - 1 NO NO NO NO NO - NO NO NO NO NO NO - - NO NO NO NO ugIL 05I09/11 0.053 -- 1 ND ND ND ND NO -- NO NO NO NO NO NO - -- -- -- -- NO ug/L 10I12/11 0.053 - 1 NO ND ND ND NO - NO NO NO NO NO NO NO NO NO NO NO NO ugIL 0411]/12 0.11 -- 1 ND ND ND ND ND - NO NO NO NO NO NO NO NO NO NO NO ugIL 10/25/12 0.11 - 1 ND ND ND ND ND - NO NO NO NO NO NO NO NO NO NO NO NO ug1L 05102113 0.11 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/24113 0.11 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04124114 0.11 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/08114 0.11 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/14115 0.11 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO NO NO ug& I=115 0.11 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/20/16 0.11 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO ND ND NO ugIL 09/28/16 0.11 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND NO ugIL 04/25/17 0.11 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 1017117 0.11 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/1 W18 0.11 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/1&18 0.11 1.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/12/19 0.11 1.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/07/19 0.11 1.0 - NO NO NO NO NO 0.20 J NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04I20/20 0.11 1.0 - NO NO NO NO NO 0.49 J NO NO NO NO NO NO NO NO NO NO NO NO ugIL u L 10 MO N128/21 0.11 0.11 1.0 1.0 - NO NO NO NO NO ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO GGaI.G!■ 8012 August 2021 TABLE 4 S-q of Grondwater Monitoring Resits Detected Conatite0te White Street L-dfill - Phase 11, Permit No. 41413 Greensboro, North Caroline Method Practical SWS Auessmenl Oetedetl Monitoring Cons[Ruent Reporting Sample Oete - DuamitMion Reporting Upgradient Monitoring Welle Compliance Downgradient Monitoring Walla Monitorng Sentinel Monitorng Wells Blanks Units Date Limn Limit Limh MW-13 MW-1I 11.1 11.2 11.3 INA II.S II-fi II-] II-78 II.B II-12 Well IISB II4 8MW4 BMWJ SMWd Tetrachllmethene uglL 03I01NJ9 -- -- 5 NO NO NO NO NO - NO NO 12 ND ND NO - ND -- -- -- ND NC 2L-13 glL ug/L 09/01/99 - - 5 NO NO NO NO NO - NO NO 12 NO NO - - -- -- -- -- ND EPA MCL=Sug/L uglL 03/01100 -- -- 5 NO NO NO NO NO - NO NO 9 NO NO NO -- NO -- -- -- ND ug/L 09/01/00 -- - 5 NO NO NO NO NO - NO NO 12 NO NO - - -- -- -- -- ND ug/L 03/01I01 -- -- 5 NO NO NO NO NO - NO NO 9.6 NO NO NO - ND -- -- -- NO ug/L 09/01101 -- - 5 NO NO NO NO NO - NO NO 20 NO NO - - -- -- -- -- NO u9IL 03/01IO2 -- -- 5 NO NO NO NO NO - NO NO 7 NO NO NO - NO -- -- -- NO ug/L 09/01102 -- - 5 NO NO NO NO NO - NO NO 8.7 NO NO - - -- -- -- -- NO ug& 04/15/03 -- -- 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO u9IL 10/01/03 -- - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- ND ug& 03/01I04 -- -- 5 NO NO NO NO NO - NO NO 6.7 NO NO NO - NO -- -- -- NO u9IL 09/01I04 -- - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- ND ug/L 0&01I05 -- -- 5 NO NO NO NO ND - NO NO NO NO NO NO - ND -- -- -- ND u9IL 10/01105 -- - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- ND ug/L 04101/D6 -- -- -- - - ug& 10/01106 -- - 5 NO NO NO 5.2 NO - NO NO NO NO NO - - -- -- -- -- NO u9IL 04/12107 -- NO NO NO 5.1 NO - NO NO 3.6 1.8 NO - - -- -- -- -- NO ug&0912fi/07 - NO NO NO 3.2 NO - NO 1.6 0.41 J NO - - -- - -- NO u9IL 04/29108 0,36 - 1 NO NO NO 3.5 NO - NO NO 0.69 J 0.40 J NO NO - -- -- -- -- NO u&L 12101/OB 0,36 - 1 NO NO NO NO NO - NO NO NO NO NO NO - -- -- -- -- NO u9IL 04/17109 -o -- 1 NO NO NO 3.2 NO - NO NO ON J 0.63 J NO NO - -- -- -- -- NO u9IL 10/1fi/09 0.36 -- 1 ND NU ND 5.2 ND - ND ND 0.83 J 0.51 J ND - - -- - - NO u9IL 04/28/10 0.099 -- 1 NO NO NO 4.2 NO - NO NO 0.56 J 0.57 J NO NO - -- NO u9IL 08102/10 036 - 1 - - - NO NO NO NO ug/L 10I11/10 0.36 -- 1 NO NO 0.36 ND NO -- NO NO NO 0.57 J NO NO - -- NO NO NO NO ug& 05109/11 0.73 - 1 NO NO NO NO NO - NO NO NO NO NO NO NO u9IL 10I12/11 0.73 -- 1 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO NO u9IL 04117/12 0.1] - 1 NO NO NO NO NO - NO NO NO 0.41 J NO NO NO NO ND ND ND u&L 10/25/12 0.1] - 1 NO NO NO 2.7 NO - NO NO 0.52 J 0.52 J NO NO NO ND ND ND ND ND u9IL 05/02113 0.17 -- 1 NO NO NO 2A NO NO NO NO 0.48 J NO NO NO ND ND ND ND NO uglL 09/24113 0.17 - 1 NO NO NO 2.1 NO NO NO NO NO NO NO NO NO ND NO NO NO NO u9IL 04/24/14 0.17 - 1 NO NO NO NO NO NO NO NO 0.51 J NO NO NO NO NO 0.44 J NO NO uglL 10106/14 0.17 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 04/14/15 0.17 - 1 NO NO NO 0.85 J NO NO NO NO 0.40 J NO NO NO NO NO NO NO NO u9IL 1o/07/15 0.17 -- 1 NO -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9/L 04/20/16 0.17 -- 1 NO NO NO 1.4 NO NO NO NO NO 0.44 J NO NO NO NO NO NO NO NO u9IL 09/26/16 0.17 - 1 NO NO 0.69 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO uglL 04/25/17 0.17 - 1 ND NO ND 1.0 NO NO NO NO ND ND ND ND ND NO NO NO NO NO u9IL 10/17/17 0.17 - 1 NO NO 0.61 J NO NO NO NO NO 0.40 J NO NO NO NO NO NO NO NO uglL 04/16/18 0.17 1 ND NO ND ND ND ND ND ND ND ND ND ND ND NO NO NO NO NO u9IL 10/1.18 0.17 1.0 - NO NO NO NO NO NO NO NO ND NO ND NO NO NO NO NO NO ug/L 04/12/19 OA7 1.0 - ND NO ND 0.42 J ND ND NO NO NO NO ND ND NO NO NO NO NO NO uglL 10/07/19 0.17 1.0 - NO NO NO ND NO ND ND ND ND 0.31 J NO ND NO NO NO NO NO NO ug/L 04/20/20 0.17 1.0 -- NO NO NO NO NO NO NO ND ND NO NO ND NO NO NO NO NO NO u9IL u /L 10/13/20 04/28/21 0.17 0.17 10 1.0 -- ND ND NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO ND NO ND NO ND Toluene u9IL 03/01199 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- NO NC 2L=600 ug/L ug& 09101/99 -- - 5 NO NO NO NO NO - NO NO NO NO NO - -- -- -- NO EPA MCL=1000 ugh 191E 03I01I00 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO u9IL 09I01/00 - - 5 ND ND NO NO NO - NO NO NO NO NO - - -- -- NO 41. 03101I01 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO u9IL 09101/01 - - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- NO ug1L 03/01/02 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO u9IL 09/01/02 - - 5 NO NO NO NO NO - NO NO NO NO NO - - - - -- -- NO ugh 04/15103 -- -- 5 ND NU ND ND ND - NO NO NO NO NO - - - -- -- -- NO u9IL - - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- NO ugh 03101/03 09/01/04 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO u9IL 09/01/04 NO NO NO NO NO - NO NO NO NO NO - - -- -- NO ug/L 05/01105 -- -- 5 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- NO u9IL 10/01/05 NO NO NO NO NO - NO NO NO NO NO - - - -- -- -- NO ugh 04/01106 -- -- -- - - - ug/L 10101/OB - - 5 NO ND NO NO NO - NO NO NO NO NO - - - - - -- NO u9/L 04/12/0l -- -- -- NO NO NO NO NO -- NO 0.36 J NO NO NO -- - - -- -- -- NO ug/L 09/26/07 - - NO NO NO NO NO - NO NO NO NO - - - - - - NO ug/L 04/29/OB 0.20 -- 1 ND NO NO NO ND -- NO NO NO NO NO NO - -- -- -- -- NO ug/L 12/01/OB 0.27 - 1 ND NO NO NO ND - NO 0.43 J NO NO NO NO - - - -- - NO u9IL 04/17/09 0.27 -- 1 ND NO NO NO NO -- NO NO NO NO NO NO -- - - - - NO ug/L 1011&09 0.27 - 1 NO NO NO NO NO - NO NO NO NO NO - - - - - NO ug/L 0412&10 0.053 -- 1 ND NO ND ND NO -- NO NO 1.0 NO NO NO -- NO ug/L 08/02/10 0.27 - 1 NO NO NO - NO NO - NO NO NO NO NO ug/L 10H7/10 0.27 -- 1 ND NO ND ND NO -- NO NO NO NO NO NO -- - - - - NO ug/L 05/09/11 0.85 - 1 NO NO NO NO NO - NO NO NO NO NO NO NO u9IL 10/1211 0.85 -- 1 NO NO NO NO NO -- NO NO NO NO NO NO NO NO NO NO NO NO ug/L 0411 71 2 0.14 - 1 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO ug/L 1012&12 0.14 -- 1 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO NO NO NO ug& 0&02/13 0.14 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO ug/L 09/24113 0.14 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugll- 04/24/14 0.14 - 1 NO NO NO NO NO NO NO NO NO NO NO NO ND NO ND ND ND ug/L 10/06114 0.14 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug1L 04/14/15 0.14 - 1 NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND uglL 10/0]115 0.14 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ug/L 04/20/16 0.14 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO uglL 09/2&16 0.14 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/25/17 0.14 - 1 NO NO NO NO NO NO NO NO NO NO 8.2 NO NO NO NO NO NO NO uglL 10/i 7/17 0.14 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/16/18 0.14 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO uglL 10/1&18 0.14 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 04/12/19 0.14 1.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 10/0]/19 0.14 1.0 - NO NO 0.15 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/20/20 0.14 1.0 - NO ND NO NO ND NO NO ND NO ND ND ND ND NO NO NO NO NO uyL uglL 10/1&20 04/28/21 0.14 0.14 1.0 1.0 - NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO ND NO NO NO NO NO NO NO ND TnOhlomathena ug/L 03I01/99 - - 5 NO NO NO NO NO -- ND ND ND ND ND ND -- NO - - - NO NC 2L=3 ug/L uglL 0 to "`9 ND ND ND ND ND -- ND ND ND ND ND -- - - - NO EPA MCL=5 ug/L u9IL 03/01/00 - - 5 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - NO uglL '10,/00 - - 5 ND ND ND ND ND -- ND ND ND ND ND -- - - - NO u9IL 03I01/01 - - 5 ND ND ND ND ND -- ND ND ND ND ND ND -- NO - - - NO u9IL 09/01/01 - - 5 ND ND ND ND ND -- ND ND 20 ND ND -- -- - - - - NO u9IL 03/01/02 - - 5 ND ND NO ND ND -- ND ND ND ND ND ND -- NO - - - NO u9IL 09/01/02 - - 5 ND ND ND ND ND -- ND ND ND ND ND -- -- - - - - NO u9IL N115103 - - 5 ND ND NO ND ND -- ND ND ND ND ND -- -- - - - - NO u9IL 10/01/03 - - 5 ND ND ND ND ND -- ND ND ND ND ND -- - - - NO u9IL 03/01/04 - - 5 ND ND NO ND ND -- ND ND ND ND ND ND -- NO - - - NO ug/L 09/01/04 - - 5 ND ND ND ND ND -- ND ND ND ND NO -- - - - NO u9IL 05101/05 - - 5 ND ND ND ND ND -- NO NO NO NO NO ND - NO - - - NO u9IL 10/01/06 - - 5 ND ND ND ND ND -- ND ND ND ND ND - - - - - - NO u9IL 04/01/06 - - - -- -- -- -- -- -- __ u9IL 10/01/06 - - 5 NO NO NO NO NO -- ND ND ND ND ND -- -- - - - - NO u9IL N112J07 - - - ND ND ND ND ND -- ND ND ND ND ND -- -- - - - - NO u9IL N/2W07 - ND ND ND ND ND -- ND -- ND ND ND -- -- - - - - NO u9IL N129/08 0.25 - 1 ND ND ND 3.6 ND -- ND ND ND ND ND ND -- - - - - NO u9IL 12/01/08 0.38 - 1 ND ND ND ND ND -- ND ND ND ND ND ND -- - - - - NO u9IL N117/09 0.38 - 1 ND ND ND 3.0 ND -- ND ND ND ND ND ND -- - - - - NO ug/L 10/16/09 0.38 - 1 ND ND 0.91 J 4.7 ND -- ND ND 0.48 J ND ND -- - - - - NO u9IL 04/2&10 0.13 - 1 ND ND 0.53 J 4.1 ND -- ND ND ND ND ND ND -- - - - - NO u L 0&02/10 0.38 - 1 -- ND 0.62 J /.1 -- -- ND ND -- -- -- NO NO NO NO NO ug/L 10/11/10 0.38 - 1 ND ND 0.48 J 3.8 ND -- ND ND ND ND ND ND -- - NO NO NO NO ug/L 05/09/11 0.72 -- 1 NO NO NO 3.3 NO - NO NO NO NO NO NO ND ug1L 1012/11 0.72 -- 1 NO NO NO NO NO - NO NO NO NO NO NO NO ND NO NO NO NO u9IL 04/1]112 0.15 - 1 NO NO NO 2.5 NO - NO NO NO NO NO NO NO NO NO NO NO ug/L 1012&12 0.15 -- 1 NO NO NO 2.9 NO - NO NO NO NO NO NO NO NO NO NO NO NO uglL 0&02/13 0.15 -- 1 NO NO NO 3.2 NO NO NO NO NO NO NO NO NO NO NO NO NO uglL 09/2413 0.15 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO 0.40 J NO NO ug/L 04/24/14 0.15 - 1 NO NO NO 2.5 NO NO NO NO NO NO NO NO NO NO 0.60 J NO NO ug/L 1010614 0.15 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 04/14/15 0.15 - 1 NO NO NO ND NO ND NO NO ND ND ND ND NO NO NO NO NO u9IL 1010715 0.15 - 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO uglL 04I20/16 0.15 - 1 ND NO ND 2.0 ND ND ND ND ND ND ND ND ND NO NO NO NO NO ug/L 09/25/i6 0.15 -- 1 NO NO 1.4 NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/2&11 0.15 - 1 ND ND ND 2.6 ND ND ND ND ND ND ND NO NO NO NO NO NO NO uglL loll 7/17 0.15 - 1 NO NO 1.5 NO NO NO NO NO ND ND ND ND NO NO NO NO NO ug/L 04/1&18 OA5 1 ND NO NO 1.4 NO ND NO NO NO NO NO NO NO NO NO NO NO NO ug/L 10/16/18 0.15 1.0 -- ND ND 0.91 J ND ND NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04112/19 0.15 1.0 -- NO NO NO 1.2 NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 10,07/19 0.15 1.0 -- NO NO NO 0.75 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/20/20 0.15 1.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ug/L ug& 10/13120 04/28/21 0.15 0.15 1.0 1.0 -- NO NO NO NO NO ND 0.51 J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO NO ND NO ND NO ND TdWorofluoromethane ug/L 03/01/99 -- -- 5 NO NO 38 34 NO - NO 28 NO NO NO NO - NO -- -- -- NO NO 2L=2000ug/L ugll- 09/0119, NO NO NO 30 NO - NO NO NO NO NO - - -- -- -- -- NO (No EPA MCL) ug/L 03/0"ol -- -- 5 NO NO NO 14 NO - NO NO NO NO NO NO - NO -- -- -- NO u9IL 09/01/00 - - 5 NO NO NO 20 NO - NO NO NO NO NO - - -- -- -- -- NO u9IL 03/01101 -- -- 5 NO NO NO 14 NO - NO NO NO NO NO NO - NO -- -- -- NO ug& 09/01/01 - - 5 NO NO NO 23 NO - NO NO NO NO NO - - -- -- -- -- ND ugh 03/01102 -- -- 5 NO NO NO 17 NO - NO NO NO NO NO NO - NO -- -- -- NO u9IL 09/01/02 - - 5 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- ND ug/L 04/15/03 -- -- 5 NO NO NO 5.2 NO - NO NO NO NO NO - - -- -- -- -- NO u9IL 10/01/03 - - 5 NO NO NO 14 NO - NO NO NO NO NO - - -- -- -- -- ND ug/L 03/01I04 -- -- 5 NO NO NO 5.6 NO - NO NO NO NO NO NO - NO -- -- -- NO u9IL 09/01I04 - - 5 NO NO NO 21 NO - NO NO NO NO NO - - -- -- -- -- NO u9IL 0&01I05 -- -- 5 NO ND ND 7.0 ND - NO NO NO NO NO NO - NO -- -- -- NO u9IL 10/01/05 - - 5 NO NO NO 10 NO - NO NO NO NO NO - - -- -- -- -- NO u9/L 04/01106 -- -- -- - - - ug/L 10/01/O6 - - 5 NO NO NO 13 NO - NO NO NO NO NO - - - - -- -- NO ug/L 04/12/07 -- -- -- NO NO NO NO NO - NO NO NO NO NO -- -- - -- -- -- NO ug/L 09/28/07 - NO NO NO NO NO - NO NO NO NO - - - - -- -- NO u9IL 04/29/08 0.28 -- 1 NO NO NO 4.2 NO - NO NO NO NO NO NO - - -- -- -- NO %L 12/01/OB 0.28 - 1 NO NO NO NO NO - NO NO NO NO NO NO - - - -- -- NO ug/L 04117/09 0.28 -- 1 NO NO NO 2.5 NO -- NO NO NO NO NO NO - -- -- -- - NO ug/L 10I1&09 0.28 - 1 NO NO NO 4.1 NO - NO NO NO NO NO - -- - -- - NO ug/L 0412&10 0.15 -- 1 NO NO NO NO NO -- NO NO NO NO NO NO - -- NO ug/L 08102/10 0.28 - 1 - - - - - - - -- -- -- -- -- -- - NO NO NO NO ug/L 10/11/10 0.28 -- 1 ND NO ND 2.3 ND -- ND ND ND ND ND ND -- - NO NO NO NO ug/L 05/09/11 0.66 - 1 ND ND ND 1.2 NO -- NO NO NO NO NO NO NO ug/L 10/12/11 0.66 -- 1 NO ND ND ND NO -- ND ND ND ND NO ND ND NO NO NO NO NO ug/L 04/17/12 0.24 - 1 ND ND ND 0.84 J NO -- NO NO NO NO NO NO NO NO NO NO NO u9IL 10125/12 0.24 -- 1 ND ND ND 0.88 J NO -- ND ND ND ND NO ND ND NO NO NO NO NO ug/L 051OV13 0.24 - 1 ND ND NO 0.73 J NO NO NO NO NO NO NO NO NO NO NO NO NO uyL 09124/13 0.24 -- 1 ND ND ND 0.48 J NO NO NO NO ND NO NO NO ND NO NO NO NO NO u9IL 04124/14 0.24 - 1 NO ND NO 0.55 J NO NO NO ND NO NO NO ND NO NO NO NO NO u9IL 101W114 0.24 -- 1 ND ND ND NO ND NO ND ND ND ND ND NO NO NO NO NO NO NO ug/L 04114/15 0.24 -- 1 ND ND ND ND ND ND ND ND ND ND ND NO NO NO NO NO NO u9IL 10/07/15 0.24 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO u9IL 04/20/16 0.24 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND u9IL 09/26116 0.24 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO ugll- N125117 0.24 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ug/L 10/17/17 0.24 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO ND ND ND ND ND ug1L 04/1&18 0.24 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND ND uglL 10/16/18 0.24 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO ND ND NO NO NO ug/L 04/12119 0.24 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NO NO NO uglL 10/07/19 0.24 1.0 -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO uglL 04/20Y20 0.24 1.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L u L 10/13/20 04/26 1 0.24 0.24 1.0 1.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO R GGLG!■ 90fl2 August 2021 TABLE 4 Smmary of Grondwater Monitoring Resits Detectel Conatiteeta White Street Landfill - Phase 11, Permit No. 41413 Greensboro, North Caroline Method Practical SWS Auessment Oetedetl Monitoring Cons[nuent Reporting Sample Oetedion DuamitMion Reporting Upgradient Monitoring Wells Compliance Downgradient Monitoring Walls Monitorng Sentlnel Monitorng Wells Blanks Units Date Limn Limit Limk MW-13 MW-1I 11.1 11.2 11.3 INA II.S II-fi II-] II-78 II.B II-12 Well IISB II4 8MW4 8MW-3 BMWd Vinyl Chloritle ugIL 03I01 NJ9 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- - NO NC 2L=0.03 ugIL ugIL 09/01/99 - - 10 NO NO NO NO NO - NO NO NO NO NO - -- -- -- ND EPA MCL=2 ug/L ugIL 0310,/00 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO - NO -- -- -- ND ugIL 09/01/00 - - 10 NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ugIL 03101/01 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- - ND ugIL 09/01/01 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - NO ugIL 03I01/02 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO -- -- -- NO ILL 09/01/02 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO ugIL 04/15/03 -- -- 10 NO NO NO NO NO - NO NO NO NO NO - -- -- -- -- -- NO ugIL 10/01/03 - - 10 NO NO NO NO NO - NO NO NO NO NO - - - - NO ugIL 03/01/04 -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- NO - - -- NO ugIL 09/01/04 - - 10 NO NO NO NO NO - NO NO NO NO NO -- - - - NO ugIL OS/01/OS -- -- 10 NO NO NO NO NO - NO NO NO NO NO NO -- 12 - -- -- NO ugIL 10/01/05 - - 10 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO ugIL 04/01/06 -- -- - -- -- -- ugIL 10/01/06 -- - 10 NO NO NO NO NO - NO NO NO NO NO - - - - - - NO ugIL 04112I07 -- -- -- NO NO NO NO NO - NO NO NO NO NO - -- - - -- -- NO ugIL 09/26/07 - NO NO 0.7 J 4.3 NO - NO 0.44 J NO NO - - - - - NO ugIL 04/29/08 0.3 -- 1 NO NO NO NO NO - NO NO NO NO NO NO -- - - - -- NO ugIL 12/01M8 0.3 -- 1 NO NO 0.73 J 3.9 0.44 J - NO NO NO NO NO NO - - - - - NO ug/L 02/13/09 0.3 - 1 - - - -- 0.47 J - - - -- - - - -- - -- -- -- ND ugIL 04/17/09 0.3 - 1 NO NO NO NO NO - NO NO 0.48 J ND ND ND - - - - - NO ugIL 10/1 09 0.3 - 1 NO NO 1.6 5.4 NO - NO NO 0.47 J NO NO - -- -- -- -- -- NO ugIL 04/28/10 0.083 - 1 NO NO 0.80 J 4.8 NO - NO NO 0. so J NO NO NO - NO ugIL 08102I10 0.3 - 1 NO 1.5 4.8 - NO NO -- 2.6 NO 0./9 J NO NO ugIL 10/11/10 0.3 -- 1 NO NO 1.4 5.4 0.44 J - NO NO NO NO NO NO - - NO 0.68 J NO NO ugIL 05/09/11 0.6 - 1 NO NO NO 5.1 NO - NO NO NO NO NO NO NO ugIL 10/12111 0.6 -- 1 NO NO NO NO NO - NO NO NO NO NO NO NO 0.69 ND NO NO NO ugIL 04/1]l12 0.32 - 1 NO NO 0.52 J 2.1 NO - NO NO NO NO NO ND 1.0 NO NO NO ND ugIL 10/25/12 0.32 -- 1 NO NO 1.3 ND NO - NO NO NO NO NO NO NO NO ND NO NO NO ugIL 05/02/13 0.32 - 1 NO NO NO 5.6 0." J -- NO NO NO NO NO NO NO 0.79 NO NO NO NO ugIL 09/24/13 0.32 -- 1 NO NO 0.43 J 3.8 NO NO NO NO NO NO NO NO NO 4.0 NO 1.3 NO NO ugIL 0412114 0.32 - 1 NO NO NO 4.6 Of -- NO NO NO NO NO NO NO NO NO NO ND ND ugIL 10/06/14 0.32 -- 1 NO NO NO 2.6 NO ND NO NO NO NO NO NO NO NO NO NO NO ND ugIL 04/1d/15 0.32 - 1 NO NO ND 2.5 0.44 J NO NO NO NO NO ND - NO NO 0.11 16 0.71 NO ugIL 10/07/15 0.32 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO 0.)2 J NO NO ugIL Od/20/18 0.32 - 1 NO NO ND 4.2 NO NO NO NO NO NO ND NO ND ND NO 1.6 NO NO ugIL 09/26/16 0.32 -- 1 NO NO NO NO NO NO NO NO NO NO NO NO 1.4 NO 1.5 NO NO ugIL 04/25/17 0.32 -- 1 NO NO NO 3.1 NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 1W 7/17 0.32 - 1 NO NO 2.5 NO NO NO NO NO NO NO NO NO 1.5 NO 1.7 NO NO ug/L 04/16/18 0.32 - 1 NO NO NO 3.2 NO NO NO NO NO NO NO NO NO ND NO 3.0 NO NO ugIL 10/16/18 0.32 1.0 -- NO NO 2A NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/12/19 0.32 1.0 -- NO NO NO 1.4 NO NO NO NO NO NO NO NO NO ND NO 1.1 ND ND ugIL 1010]119 0.32 1.0 - NO NO NO 2.2 NO NO NO NO NO NO NO NO NO ND NO 1.6 ND ND ugIL 04/20/20 0.32 1.0 -- NO NO NO 1.3 NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 10/13Y20 0.32 1.0 - NO NO NO 1.7 NO NO NO NO NO NO NO NO NO 0.47 J NO NO NO NO u /L 04/28121 0.32 1.0 NO NO NO 1.3 NO NO NO NO NO NO NO NO NO NO NO 1.7 NO NO Xylenes (TptaO ugIL 03/01/99 - - 5 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO NC2L=500ug/L ugIL 09/01/99 -- -- 5 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO EPA MCL=10000 ugIL ugIL 03/01/00 - - 5 NO NO NO NO NO - NO NO NO NO NO NO -- NO - - - NO ug/L 09/01/00 -- -- 5 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ugIL 03/01/01 - - 6 NO NO NO NO NO - NO NO NO NO NO NO -- NO - - - NO ug/L 09/01/01 -- -- 5 NO NO NO NO NO -- NO NO NO NO NO -- - - - NO ug/L 03111M - - 5 NO NO NO NO NO -- NO NO NO NO NO NO -- NO - - - NO ugIL 0- /02 -- -- 5 NO NO NO NO NO -- NO NO NO NO NO -- -- - - - - NO ug/L 04/15/03 - - 6 NO NO NO NO NO -- NO NO NO NO NO - -- - - - - NO ugIL 10/01/03 -- -- 5 NO NO NO NO NO - NO NO NO NO NO -- - - -- NO ug/L 03/01/04 - - 5 NO NO NO NO NO - NO NO NO NO NO NO - NO - - - NO ugIL 09/01/04 -- -- 5 NO NO NO NO NO - NO NO NO NO NO -- - - -- NO ugIL OS/01/05 NO NO NO NO NO - NO NO NO NO NO NO - NO - - - NO ugIL 10/01/OS -- -- 5 NO NO NO NO NO - NO NO NO NO NO -- -- - - - -- NO ugIL 04/01/Ofi - - - - - - uglL 10/01I06 -- -- 5 NO NO NO NO NO - NO NO NO NO NO -- - -- -- -- -- NO ugIL 04/12/07 -- -- NO NO NO NO NO - NO NO NO NO NO - - -- -- -- -- NO ugIL 09/26ID7 -- -- -- NO NO NO NO NO - NO - NO NO NO - - -- -- -- -- NO ugIL 04/29IN 0.67 - 5 NO NO NO NO NO - NO NO NO NO NO NO - -- -- -- -- NO ugIL 12/01108 0.4 -- 5 NO NO NO NO NO - NO 3.1 J NO NO NO NO - -- -- -- -- NO ugIL 04/17/09 0.4 - 5 NO NO NO NO NO - NO NO NO NO NO NO - -- -- -- -- NO ugIL 10/161D9 0.4 -- 5 NO NO NO NO NO - NO NO NO NO NO - -- -- -- -- NO ugIL 04/28110 0.22 - 5 ND ND ND ND ND - NO 1.8 J NO NO NO NO - NO ugIL 08/02/10 0.4 -- 5 NO NO NO - NO NO - NO NO NO NO NO ugIL 10/11110 0.4 - 5 NO NO NO NO NO - NO 4.0 J NO NO NO NO - -- NO NO NO NO ugIL OS/09111 2.1 -- 5 NO NO NO NO NO - NO NO NO NO NO NO NO ugIL 1012/11 2.1 - 5 NO NO NO NO NO - NO 5.5 NO NO NO NO NO NO NO NO NO NO ugIL 04/17112 0.45 -- 5 NO NO NO NO NO - NO NO NO NO NO NO NO NO NO ND NO ugIL 10/25112 0.45 - 5 ND ND ND ND ND - NO 2.6 J NO NO NO NO NO NO NO NO NO NO ugIL 05/02/13 0.45 -- 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/24/13 0.45 - 5 NO NO NO NO NO NO NO 1.8 J NO NO NO NO NO NO NO NO NO NO ugIL 04/24/14 0.45 -- 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 1010614 0.45 - 5 NO NO NO NO NO NO NO 1.9 J NO NO NO NO NO NO NO NO NO NO ugIL 04/14/15 0.45 -- 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/07/15 0.45 - 5 NO NO NO NO NO NO 0.77 J NO NO NO NO NO NO NO NO NO NO ug/L 04/20/16 0.45 -- 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 09/26/16 0.45 - 5 NO NO NO NO NO NO 1.4 J NO NO NO NO NO NO NO NO NO NO ugIL 04/25/17 0.45 - 5 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 10/17/17 0.45 - 5 NO NO NO NO NO NO 5.3 NO NO NO NO NO NO NO NO NO NO ugIL M116/18 0.45 5 NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO NO NO NO ugIL 10/16/18 0.45 3.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04112/19 0.45 3.0 -- NO ND NO NO NO NO NO NO NO ND NO NO ND NO NO NO NO NO ugIL 10107/19 0.45 3.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ug/L 04/20/20 0.45 3.0 -- ND ND ND ND ND NO ND ND NO NO NO NO NO NO NO NO NO NO ug/L u g. 10/13/20 04128127 0.45 0.45 3.0 3.0 - NO NO NO NO NO NO NO NO NO NO NO NO NO NO 0.49 NO J NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO 1,4Dioxane ugIL 10/16/18 1.2 2.0 - ND - 220 2.8 NO 100 4.6 85 1.5 J ND 350 4.1 1.3 J NO NO NO 4.4 NO NC 2L=3ug/L (verification evert) ugIL 02/20119 1.2 2.0 -- - - -- - - - - - - -- -- -- - - - - 8.4 NO ug/L 04/12/19 1.2 2.0 - NO NO 120 2.6 NO 83 2.4 6.3 1.6 J NO 290 NO 3.9 NO 4.9 2.2 12 NO ugIL 1010719 1.2 2.0 -- NO NO 210 3.1 NO ]9 8.7 120 11 1.4 J 300 7A 5.0 2.3 6.1 2.7 18 NO ugIL 04/20I20 0.80 2.0 - ND ND 1]0 2.5 1.0 J 69 3.2 33 5.8 1.14 J 310 4.0 3.5 1.0 J 0.93 J 2.4 28 NO ug/L 10/13120 0.80 2.0 -- NO NO 180 2.3 0.88 J 62 NO 49 2.6 0.8] J 310 1.1 J 3.7 3.0 0.87 J 1.2 J 5.0 ND ugIL 04/28121 0.80 2.0 NO NO 170 2.6 1.0 J 49 1.5 J 14 7.0 1.4 J 340 3.6 4.3 NO NO 2.7 21 NO Teoahytlrofuran u9/L 10/12I11 0.8 -- -- NO NO 11 NO NO -- NO 34 NO NO 0.82 J NO -- - - - - ND IMAC=2,000 ugIL ugIL 04/1]l12 0.8 -- - NO NO 4.4 NO NO - ND 4 ND ND ND ND - -- -- - -- NO (No EPA MCL) ugIL 10Y25112 0.8 -- -- NO NO NO NO NO - NO NO NO NO NO NO - NO ugIL 05/02/13 0.8 - - NO NO 5.5 NO NO NO NO NO 150 6.6 NO -- - - - - ND ugIL 09/24/13 0.8 -- -- NO NO 6.5 NO NO 10 NO 18 NO 18 6.4 NO -- - - - - NO ugIL 04/24/14 0.8 - -- NO NO 4.9 NO NO NO NO NO 140 13 NO - - - - ND ug/L 1010 14 0.8 -- -- NO NO NO NO NO 11 NO 29 NO NO 9.4 NO NO - -- - -- NO ugIL 04/14/15 0.8 - -- NO NO 8.2 NO NO 5.3 NO 1.0 NO 5.6 4.4 - NO ND ug/L 10/07/15 0.8 -- -- NO 21 NO NO 7.2 NO 32 NO NO 9.8 NO NO NO NO NO ND ugIL 04/20/16 0.8 - - NO NO 7.1 NO NO 1.4 NO NO NO 50 7.0 NO NO NO NO NO NO NO ug/L 09/26116 0.8 -- -- NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ugIL 04/25/17 0.8 - - NO NO 5.3 NO NO 6.7 NO NO NO 140 13 NO NO NO NO NO NO NO ug/L 10/17/17 0.53 -- NO -- 16 NO NO 4.2 NO 54 NO 20 12 NO NO NO NO NO NO NO ugIL f0/16/18 0.53 1.0 - NO 5.1 NO NO NO NO 2.3 NO NO 9.7 NO -- - - - - NO ugIL 04/12/19 0.53 1.0 - NO NO 4.9 NO NO NO NO NO NO NO 11 NO NO ugIL 10/07/19 0.53 1.0 - NO NO 15 NO NO 4.9 4.3 9.1 NO NO 16 NO NO NO NO NO NO NO ugIL M120/20 0.53 1.0 - NO NO NO NO NO NO NO NO NO NO 16 ND -- - - - - NO ugIL u L 10/13/20 M128/21 0.53 0.53 1.0 10 - NO NO NO NO 9.5 8.0 NO NO NO NO NO NO NO NO 9.0 NO NO NO NO NO 18 NO NO NO -- - - - - NO NO Chlontle mgIL 05/05/OS 2.4 - - -- -- 450 B 12 - -- -- -- 4.3 J 4.8 J -- -- - 6.0 - - - - = 5 m9 m - - -- 3.3 J 410 11 -- 58 4.7 J -- -- -- 10 - - - NO EPA MCL 250 mgIL mgIL 04/26/10 0.18 - - -- 3.9 J 390 12 -- -- -- -- NO 4.8 J -- -- -- 72 - - - NO m - _ -- 3.7 J 410 12 -- 18 4.8 J -- -- -- 11 - - - ND mg/L 10/25/12 4.3 - - -- 2.6 B I B - -- -- -- -- -- -- -- - - 12 B - fi.i B mg/L OS/02/13 4.3 -- - -- 2.7 B 340 B -- -- -- -- -- -- - -- -- -- 13 B - 6.9 B - mg/L 09124/13 22 -- -- -- 2.6 J 520 -- -- - - - - - - - - 14 - ].8 - NO mg/L 04/25/14 22 - - - 2.8 J 1 - - - - - - - - - - 7.7 -- 7.3 -- NO mgIL 10/02/14 22 -- -- - 3.1 J Sfi0 - - - - - - - - - - 14 -- 9.0 -- NO m9 _ _ -3.1 1 13._. -- - - - - - - - - 16 -- 11 -- ND m9 10/07115 22 570 - - - - - - - - ._ _ .. _. __ .. NO mgIL 04/18118 22 - -- - 2.3 J 460 -- -- - - - - - - -- -- 14 -- 10 -- ND mgIL 09/26/16 2.2 -- -- - 510 - - - - - - - - - - id - 13 - NO mg/L 04/25/17 2.9 -- - - 1.5 J 630 -- 16 - 7.8 - NO mgIL 10/17/17 2.2 - - - - 510 -- -- -- - - - - -- 17 - 19 - NO mgIL Od/i6/18 2.2 -- -- -- NO ]60 -- -- -- -- -- -- -- -- -- 18 - 16 - NO mgIL 10/i6/18 2.2 5.0 - -- -- 550 - - -- -- -- -- -- - - -- 6.3 - 9.3 - NO m -- -- J 300 -- -- -- -- -- -- -- -- -- -- 23 - 21 - NO mg/L 10I07/19 2.2 5.0 - - 2.4 J 390 - - -- - - - - -- - -- 28 - 17 - NO mg/L 04I20I20 2.2 5.0 -- - 6.0 J 5]D -- -- - - - - - - -- -- 34 J -- 36 -- m911 10113/20 2.2 5.0 - - 3.2 J 430 - - - - - - - - - - 38 -- 13 -- -- m 0426 5. ._ _ _. _ _ _ _ _ _ _ _. _ 24 25 Nitrate= mg/L 0.05 - 10 - NO NO - - - - J - - - J -- -- -- NO 1 mgIL mg/L 1016108 10/16I00 0.01 -- 10 - 0NO J 0NO J NO - - - - .3 .2 J 0.28 J -- - - .0 0.07] J _ _ _ NO EPA MCL 10 mgIL EPA MCL0 mgIL 04/29/10 0.025 - 10 - NO NO NO - - - - NO 0.14 J - - - 0.12 J - - - NO mgIL 08Io2I10 0025 -- 10 - NO 0.062 J 0.029 J - - - - .1 0.13 J 0.14 J - -- -- 0.13 J - -- NO mg/L 10125/12 0.025 - 10 - NO 0.036 J - - - - - - - - - - NO - NO -- NO mg/1. 05I02113 0,025 -- 10 - NO NO - - - - - - - - -- - NO -- NO -- NO mgIL 09124/13 0,025 - 10 - 0.17 J 0.046 J - - - - - - - - - - NO -- NO -- NO mgIL 04/25/14 0025 -- 10 - NO NO NO NO NO mg/L 10IO2/14 0.025 - 10 - NO 0.054 J - - - - - - - - - - NO -- NO -- NO mgIL 04I14115 0.025 -- 10 - NO NO - - - - - - - - - - NO -- 0.042 J -- NO mg/L 1010]115 0.021 - 10 - 0.22 J - - - - - - - - - - -- -- NO mgIL 04/18116 0.025 -- 10 - NO NO - - - - - - - -- -- - NO -- NO -- NO mgIL 09/26/16 0.025 - 10 - NO - - - - - - - - - NO -- NO -- NO mgIL .125117 0025 -- 10 - NO 0.046 J - - - - - - - -- -- -- 0.16 J - 1.4 J -- NO mg/L 1017117 0025 - 10 - 0.071 J - - - - - - - - - - NO -- NO -- NO mg/L 04/16/18 0025 10 - NO 0.052 J - - - - - - - -- -- -- 0.046 J - NO -- NO mgIL 1016118 0.025 0.1 - - 0.052 J - - - - - - - - - - 0.2 - 2.4 - ND mgIL 04/12/19 0,041 0.1 -- -- NO NO - - - - - - - -- -- -- ND -- NO -- 0.042 mgIL 10/07/19 0.025 0.1 - - NO ND - - - - - - - - - - NO -- NO -- NO mgIL 04/20120 0,041 D.1 -- - NO 0.052 J - - - - - - - -- -- -- ND -- NO -- -- mgIL m IL 10/13/20 04/28121 0.041 0.041 0.1 0.1 -- - NO NO 0.27 NO - - - - - - - - - - NO NO -- 0.79 NO -- -- Sulfate as SO4 mg/L 05/05/OB 0.25 -- 250 - 25 J 25 J - - - - 4.7 J 40 J -- -- -- NO NC 2L=250 mgIL mgIL 10/i6109 0.078 -- 250 - 2.0 J 12 J 27 J - - - - 23 J 100 J - - - 16 J -- -- -- NO EPA MCL = 250 mg/L mgIL 0./ "0 0.12 - 250 - 0.12 14 J 19 J - - - - 14 J 100 J - - - 27 J -- -- -- NO mgIL 08102/10 0.12 -- 250 - 1.5 J 12 J 27 J - - - - 12 J 100 - - - 15 J -- -- NO m9/L 10/25/12 0.04 - 2%w - 2.0 J 11 J - - - - - - - - - - 12 J -- 22 J -- NO mgIL 05/02113 0.04 -- 250 - 7.8 B 19 B - - - - - - - -- -- -- 11 B -- 21 B -- NO mgIL 09/24/13 0.04 -- 250 - 1.7 J 14 J - - - - - - - - - - 8.9 J -- 21 J -- NO mg/L 04/25/14 2.9 -- 250 - NO 20 J - - - - - - - -- -- -- 35 J - 18 J -- NO mg/L 10/02114 2.9 -- 250 - 2.9 14 J - - - - - - - - - - 12 J - 22 J - NO mgIL 04/14/15 2.9 -- 250 - 2.9 22 J - - - - - - - -- -- -- 12 J - 26 J -- NO mgIL 10/07/15 2.9 - 250 - - NO mg/L 04/18/16 2.9 -- "0 -- 2.9 i6 J -- -- -- -- -- -- -- -- -- -- 36 J - 26 J - NO mgIL 09/26/16 2.9 - 250 -- 11 J - - - - - - - - - -- 13 - 27 J - NO myL 04/25/17 5.8 -- 250 -- 025 J 31 J -- -- -- - -- -- -- -- -- -- 20 J - 23 J - NO mgIL 10/17/17 2.9 - 250 -- 8.9 J -- -- -- -- -- -- - - -- 14 J - 24 J - ND mgIL 04/16/18 2.9 - 250 -- NO NO -- -- -- -- -- -- -- -- -- -- 78 J - 23 J - NO mgIL 10/16/18 2.9 5.0 - -- -- NO -- -- -- -- -- -- -- - - - 19 - 19 - NO mgIL 04/12/19 2.9 S.D - -- NO 16 -- -- -- -- -- -- -- -- -- -- 59 - 27 - NO mgIL 10/07/19 2.9 5.0 - -- NO 5.3 -- -- -- -- -- -- -- -- - - 18 - 25 - NO mgIL M120/20 2.9 50 - -- 3.0 J NO -- -- -- -- -- -- -- -- -- -- 49 - 36 - - mglL m L 10/13/20 04/28/21 2.9 2.9 5.0 5.0 - - -- -- NO NO NO 200 -- -- -- -- -- -- -- -- -- -- -- - -- -- - -- - -- - -- 13 51 - - 23 39 - - - - TomlAlkalinityasCaCO3 mgIL 10/1 MI 42 - - - 19 320 370 -- -- - - 59 99 - - -- 190 - - - NO (No NC 2L) mgIL 04/29/10 32 -- -- -- i6 350 330 -- -- - - 70 110 -- -- -- 110 - - - NO o m - - - - -- - - 51 100 - - -- 320 - - - NO mg/L 10/25/12 60 -- -- -- 24 740 -- -- -- - - - -- -- -- -- 360 - 230 - NO mgIL 05/02/13 70 - - - 17 570 - - - -- - - -- 42 - 240 - NO mgIL 09/24/13 70 -- -- -- 26 780 -- -- -- -- -- -- -- -- -- -- 450 - 260 - NO mgIL 04/25/14 70 - - -- 19 800 -- -- -- -- -- -- -- - - - 19 - 220 - NO m9/L 101OV14 70 -- -- -- 24 830 -- -- -- -- -- -- -- -- -- -- 420 - 310 - NO mgIL W14116 140 - - -- 21 IN -- -- -- -- -- -- - - - 380 - 330 - NO m9/L 10/07/15 64 - - -- -- 1000 -- -- -- - - - -- -- -- -- 490 - 190 - NO - - - -- - - -- 100 - 320 - NO mw 09126116 70 - - - 960 -- -- -- - - - - -- -- -- 410 - 360 -- NO mg/L 04125/17 14 - - - 28 880 - - - - - - - - - -- 400 - 81 - NO mgIL 10117/17 70 -- - -- -- 1100 -- -- -- - - - - -- -- -- 410 - 370 - NO -- 19 810 -- -- - - -- 310 - 400 - NO mw 10/16/18 14 15 - -- -- 1000 -- -- -- -- -- - -- -- -- -- ]] - 1420 - NO mgIL 04/12/19 14 15 - - NO 900 - - - -- -- -- -- 81 - 370 - NO mgIL 10M /19 14 15 -- - NO 950 -- - - - - - -- -- -- - 3411 - 470 - NO mgIL 04/20/20 14 15 -- - NO 1]00 - - - - - - - - - - 110 -- 380 -- -- mgIL m IL 10/13/20 N128/21 14 14 15 15 -- - 14 J NO 1200 960 - - - - - - - - - - 370 48 -- 200 450 -- -- GGaI.G!■ 10 of 12 August 2021 TABLE 4 Smmary of Grondwater Monitoring Resits Detected C... tilente White Street Landfill - Phase II, Permit No. 4143 Greensboro, North Caroline Method Practical SWS AuessmeM Detected Monitoring Consthuent Reporting Sample Detection DuaMitMion Reporting Upgradient Monitoring W.IIS Compliance DowngradieM Monitoring Walla Monitorng Sentlnel M.M.Ong Well. Blanks Units Date Limh Limit Limn MW-13 MW-14 11.1 11.2 11.3 ll A 11.5 11.6 11.7 II-78 11.8 II-12 Well IISB 114 SMW4 SMW4 SMW4 Total Organic Carbon mg/L 05/OSI08 0.32 -- -- - 15 2.2 - - - - 1.3 ND - - - 9.2 -- -- -- ND (No NC 2L) mgA- 10/16I09 0.32 - - - ND 30 0.88 J - - - - ].3 2.5 - - - 2.5 -- -- -- ND (No EPA MCL) m9IL 10/16109 0.32 -- -- - ND 30 0.88 7.3 2.5 - - -- 2.5 -- -- -- ND mgA- M/29I10 0.32 - - - ND 23 2.0 - - - - 3.5 2.3 - - - 4.5 -- -- -- ND m9IL 08/02/10 0,32 -- -- - 0.40 J 34 1.3 - -- - - 2.8 2.3 - -- -- 3.0 -- - - ND m9IL 1&25/12 0.32 - - - 0.55 J 45 - - - - - - - - - - 1.7 - 1.2 - ND m9IL 05/02/13 0.32 -- -- - 0.32 19 - -- -- -- -- -- -- -- -- -- 0.93 J - 0.84 J - ND -- 0.32 48 -- -- -- - - - - -- 1.9 - 1.6 - ND m9IL 04125/i4 0.32 -- -- -- ND 36 -- -- -- -- -- -- -- -- -- -- it - 0.56 J - ND -- 0.51 J - - 48 -- -- -- - - -- 4.9 - 1.5 - ND mg/L 04/14/15 0.34 -- -- -- 0.34 33 -- -- -- -- -- -- -- -- -- -- 1.4 - 2.0 - ND mg/L 10/07/15 0.34 - - ND -- 46 -- - - -- -- -- -- - ND -- - ND 190 ND ND mg& M/1&i6 0.34 - - -- 0.48 J 37 -- -- -- -- -- -- -- -- -- -- 5.7 - 1.6 - ND mglL 09/2&16 0.34 -- 58 -- -- -- -- -- - - -- ND - ND - ND m9IL 04125/17 0.34 - - -- ND 28 -- -- -- -- - - - -- -- -- 4.3 - 2.4 ND m9 28 33 - ND mgL 046/18 11 0.34 - - -- 0.51 J 37 -- -- -- -- -- -- -- -- -- -- 2.2 - 3.0 - ND -- 56 -- -- -- - - - -- 5.2 - 1.0 - ND mglL W12119 0.34 1.0 - -- 1.4 39 -- -- -- -- -- -- -- -- -- -- 3.8 - ].0 - ND -- ND 46 -- -- -- - - -- 2.4 - 2.2 - ND mg1L D4/20/20 0.34 1.0 - -- ND 45 -- -- -- -- -- -- - -- -- -- 2.8 - 3.3 - -- mglL m /L 10/13/20 04/28/21 0.341.0 0.34 1.0 - -- - ND - 0.7 J 52 - - - - - - - - - 49 - - - - - - - -- -- - -- 5.2 - 2.4 - 5.5 -- 4.6 -- - -- Py-is Acid mg1L 10/16/09 0.02 - - - ND ND ND - - - - ND ND - - - ND - - -- ND (No NC 2L) m9IL 04/29110 0.14 -- -- - ND ND ND - - - - ND ND -- -- -- ND -- -- -- ND (No EPA MCL) mg1L 08/02110 0.14 - - - ND ND ND - - - - ND ND - - - ND -- -- ND m9IL 10/25/12 0.01 -- -- - 0.012 J 0.02 J - - - - - - - -- -- -- ND -- 0.014 J -- ND mg1L OS/02113 0.01 - -- - ND ND - - - - - - - - - - ND -- ND -- ND m9IL 09/24/13 0.01 -- -- - ND ND - - - - - - - -- -- -- ND -- ND -- ND mgll- M/25/14 0.01 - - - ND ND - - - - - - - - - -- ND - ND - ND mg/ L 10/02114 0.01 -- -- - ND ND - - - - - - - -- -- -- ND -- ND -- ND mgll- M/14/15 0.01 - - - ND ND - -- -- -- - - -- ND - ND - ND mg/L 10/07/15 0.012 -- - -- -- ND -- -- -- -- -- -- -- -- -- -- - - - - ND -- 0.018 J ND -- -- - - -- ND - 0.015 J - ND mg1L 09/26/16 0.012 -- - -- -- ND -- -- -- -- -- -- -- -- -- -- ND - ND - ND -- ND ND -- -- - - -- ND - ND - ND mg1L 10117/17 0.012 - -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND -- ND -- ND -- ND ND -- -- - - -- ND - ND - ND .W 10I1&18 0.012 0.07 -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND - ND - ND -- ND ND -- -- - - -- ND - ND - ND myL 10/07/19 0.021 007 - -- ND ND -- -- -- -- -- -- -- -- -- -- ND - ND - ND m - -- ND _ _ _ _ _ ND -- -- - - -- ND - ND - - mg/L m L 10/13/20 04/2 M 0.021 0.021 0.07 0.07 -- -- ND ND ND -- -- -- -- -- -- -- -- -- ND -- ND -- ND - ND ND -- Lactic A.IdIHIBA(2-Hydro yisobutydc Acid) mg1L 1WI6/09 0.088 -- -- - ND ND 0.17 J - - - - ND ND -- -- - ND - -- - ND (No NC 2L) mg/L '9110 0.44 - - - ND ND ND - - - - ND ND - - - ND - - -- ND (No EPA MCL) m9IL 08/02110 0.44 -- -- - ND ND ND - - - - ND ND -- -- -- ND -- -- -- ND mglL 1M&12 0.095 - - - ND ND - - - - - - - - - - ND -- ND -- ND mgA- OS/02113 0.095 -- -- - ND ND - - - - - - - - - - ND -- ND -- ND m9IL 09/24113 0.095 - - - 0.14 ND - - - - - - - - - - ND -- ND -- ND mg& 04/25114 0.095 -- -- - ND ND - - - - - - - - - - ND -- ND -- ND M 10102/14 0.095 -- -- - ND ND - - - - - - - -- -- - ND - ND -- ND mg& 04I74I15 0.0% -- -- - ND ND - - - - - - - -- -- - ND - ND - ND me -- -- - - - - - - _ _. _. _. _. _ _ _ _ ND mW 04I1&16 0.095 - - -- ND 7.5 -- -- -- -- -- - - -- -- - ND - ND - ND mg/L 0912&16 0.095 -- -- - ND - - - - - - - -- -- - ND - ND - ND mg lL 04/ M17 0.095 -- -- - ND 2.8 - - - - - - - - - - ND -- ND -- ND mglL 10I17/i7 0.095 -- -- - ND - - - - - - - - - - ND -- ND -- ND m9IL 041161i8 0.095 -- - ND 4.5 - - - - - - - - - - ND -- ND -- ND m9IL 1016118 0.095 0.14 -- - - ND - - - - - - - - - - ND -- ND -- ND m9IL 04112119 0.13 0.14 -- - ND ND - - - - - - - - - - ND -- ND -- ND mglL 10107/19 0.13 0.14 -- - ND 5.0 - - - - - - - -- -- - ND - ND - ND .:& 04/20/20 0.13 0.14 -- - ND 3.7 - - - - - - - -- -- -- ND - ND - - IL m L .1W20 04I2&21 0.13 0.13 0.14-- 0.14 - ND -- ND ND -- -- -- -- ND -- -- -- -- -- -- -- -- -- -- -- ND - ND - ND - ND - - - -- 0.58 25 ND -- 084 0.53 -- -- -- 0.39 J - - - ND (No NC 2L) mg, M129/10 0.0. - - -- ND ND ND -- -- -- - ND ND -- -- -- ND - - - ND o m _ _ -- ND _ _ _ ND ND -- ND ND -- -- -- ND - - - ND mglL 10/2M12 0.031 - - -- 0.53 ND -- -- -- -- -- -- - -- -- -- ND - ND - ND -- ND 28 - - -- -- -- ND - ND - ND mWL 09124/13 0.031 - - -- 0.14 ND -- -- -- - - - - -- -- - ND - ND - ND mg/L 0412&14 0.031 -- -- - ND ND - - - - - - - -- -- -- ND - ND - ND mg/L 10IOW14 0.031 - - -- ND 65 -- -- -- - - - - -- -- -- 0.088 - ND - ND -- ND - 0.25 -- ND mg& 10/07/15 0.16 -- -- - - 31 - - - - - - - - - - -- -- -- -- ND m9IL 04118/16 0.16 -- -- - ND 31 - - - - - - - - - - ND -- ND -- ND mgA- 01/26116 0.16 -- -- - 54 - - - - - - - - - - ND -- 0.16 -- ND mglL U125117 0.16 -- -- - 0.68 15 - - - - - - - - - - 1.4 -- 1.3 -- ND m9IL 10/17117 0,16 -- -- - 45 - - - - - - - - - - ND -- 0.18 J -- ND m9IL U116118 0.16 -- - ND 18 - - - - - - - - - - ND -- 0.19 J -- ND m9IL 10I16I18 0.16 0.2 -- - - 20 - - - - - - - - - - ND -- ND -- ND mglL 04I12/19 0.18 0.2 -- - ND i6 - - - - - - - -- -- - ND - ND - ND mgl 10/0]/19 0.18 0.2 -- - ND 27 - - - - - - - -- -- - ND - 0.28 - ND -- ND 26 - - -- -- -- ND - ND - - mglL 10/13/20 0.18 0.2 - -- ND -- ND 11 -- - -- - - - -- -- -- ND -- -- -- -- -- -- 9.4 - ND - ND - ND - - - PmpionicAcid mg, 10/i6/09 0.054 - - -- ND ND ND -- -- -- -- ND ND -- -- -- ND - - - ND (No NC 2L) mglL 04/29/10 0.18 - - -- ND ND ND - - - - ND ND -- -- -- ND - - - ND (No EPA MCL) mg/L OBA)WO 0.18 - - -- ND ND ND - - - - ND ND -- -- -- ND - - ND mg/ L 10/25/12 0.063 -- - -- ND 50 - - - - - - - -- -- -- ND - ND - ND mg/L 0&02113 0.063 - - -- ND ND -- - - - - -- -- -- -- -- ND - ND - ND -- ND ND -- -- -- -- -- ND - ND - ND mglL 04/2W14 0.063 - - -- ND 22 -- -- -- - - - - -- -- -- ND - ND - ND mW 10/02/14 0.063 - - -- ND ND -- - - - - - - -- -- -- ND - ND - ND mg/L 041M15 0.063 - - -- ND 21 - - - - - - - -- -- -- ND - ND - ND mg 10107/15 0.065 21) ND m9IL 04/1&16 0.065 - - - 0.4] 24 - - - - - - - - - - ND -- ND -- ND m9IL 09/26/16 0.065 -- -- - - dbND ND ND mg& 04/25117 0.065 - - - ND ND - - - - - - - - - - 0.14 -- ND -- ND zi 10/17117 0.065 -- -- - - ND ND ND ND m9IL 04/16/18 0.065 - - ND 11 - - - - - - - - - - ND -- 0.13 -- ND mglL 10116118 0.065 0.1 -- - - ND - - - - - - - -- -- -- ND - ND -- ND mglL 04/12119 0.065 0.1 - - 0.57 ND - - - - - - - - - - ND -- ND -- ND mg1L 10/07/19 0.065 0.1 -- - ND ND - - - - - - - -- -- - ND -- ND -- ND mglL 04/20121 0.065 0.1 - - ND ND - - - - - - - - - - ND -- ND -- -- mgA- m IL 10/13/20 W28121 0.065 0.065 0.1 0.1 -- - ND ND ND - - - - - - - - - ND - 0.28 -- ND -- ND ND -- Hezenolc AGd mgA- 10/i8109 0.32 -- -- - ND ND ND - - - - ND ND - - - ND -- -- -- ND (No NC 2L) m9IL 04/29I10 0.23 - -- - ND ND ND - - - - ND ND - - - ND -- -- -- ND (No EPA MCL) mgA- 08/02I10 0.23 -- -- - ND ND ND - - - - ND ND m9IL 10/25/12 0.078 - - - ND ND - - - - - - - - - - ND -- ND -- ND mglL 05/02113 0.078 -- -- - ND ND - - - - - - - - - - ND -- ND -- ND mgA- 09/24113 0.078 - - - ND 2.4 - - - - - - - - - - ND -- ND -- ND mg/L 04Y 114 0.078 -- -- - ND ND - - - - - - - - - - ND -- ND -- ND m9IL 10/02114 0.078 - - - ND ND - - - - - - - - - - ND -- ND -- ND mglL 34/14115 0.078 -- -- - ND ND mglL 10/07/15 0.26 - - - - ND - - - - - - - - - - - - - - ND mg/ L 04/18116 0.26 -- -- - ND ND -- ND - ND - ND mg/L 09/2&16 0.26 - - -- ND - - - - - - - - - -- ND - ND - ND mglL OdRW17 0.28 -- -- -- ND ND -- -- -- -- -- ND ND - - ND mglL 10/17/17 0.26 -- ND -- -- -- - - - - - -- ND - ND - ND mg/L 04/16118 0.26 - - -- ND ND - -- -- -- -- -- -- ND - ND - ND uglL 10/1&18 0.26 0.5 - - ND - - - - - - - - - - ND - ND - ND ND ND ._ ._ ._ ._ ._ -- ND - ND -- ND uglL 10/07/19 0.26 0.5 - - ND ND - - - - - - - - - - ND - ND - ND 04120120 0.26 ND ND-- - ND -- ND -- -- ug1L u IL 10/13/20 04/28121 0.26 0.26 0.5 0.5 - - ND ND ND - - - - - - - - - ND - ND -- ND -- ND ND -- i.o-Hexanoic Acid m9IL 10/16109 0.41 - - - ND ND ND - - - ND ND ND -- -- -- ND (No NC 2L) mgA- 04/29/10 0.21 -- -- - ND ND ND -- ND ND -- -- - 0.95 J ND (No EPA MCL) m9IL 08/02/10 0.21 - - - ND 2.6 ND - - - - ND ND - - - ND -- -- ND mglL 10/25112 0.08 -- -- - ND ND - - - - - - - - - - ND -- ND -- ND m9IL 05/02113 0.08 - - - ND ND - - - - - - - - - - ND -- ND -- ND mglL 09/24113 0.08 -- -- - ND ND ND ND ND m9IL N125114 0.08 - - - ND ND - - - - - - - - - - ND -- ND -- ND m9IL 10/02114 0.08 -- -- - ND ND - - - - - - -- -- -- -- ND -- ND -- ND mglL M114/15 0.08 - - - 0.36 J ND - - - - - - - - - - 0.61 - 0.36 J - ND mglL 1010]/15 0." -- -- - - ND - - - -- -- -- -- -- -- -- - - - -- ND A/18116 0.4 ND ND-- -- -- -- - - - -- ND - ND - ND m9IL 0&26/16 0." -- -- - - ND -- -- -- -- -- -- -- -- -- -- ND - ND - ND -- ND ND -- -- - - - -- ND - ND - ND m9IL 10117/17 0.44 - - -- -- ND -- -- -- -- -- -- -- -- -- -- ND - ND - ND -- ND ND -- -- - - - -- ND - ND - ND uglL 10/16/18 0.44 0.5 -- -- -- ND -- -- -- -- -- -- -- -- -- -- ND - ND - ND ug/L 04/12119 0.44 0.5 - - ND ND -- -- - - - - - - - - NO - ND - ND uglL 10/07/19 0.44 0.5 -- - ND ND - - - - - -- -- -- -- -- ND -- ND - ND uglL 04/20/20 0.44 0.5 - - ND ND - - - - - - - - - - ND -- ND -- -- uglL u IL 10/13120 04/2W21 0.44 0.44 0.5 0.5 -- - ND ND ND - - - - - -- -- -- -- ND - ND -- ND -- ND ND -- Pentanoic Acid mgA- 10/i6109 0.18 -- -- - ND ND ND - - - - ND ND - - - ND -- -- -- ND (No NC 2L) m9IL 04/29I10 0.2] - - - ND ND ND - - - - ND ND - - - ND -- -- -- ND (No EPA MCL) m9IL 08102110 0.27 -- -- - ND ND ND - - - - ND ND -- -- - ND -- -- -- ND m9IL 10/25/12 0.052 - - - ND ND - - - - - - - - - - ND -- ND -- ND m9IL 05/02113 0.052 -- -- - ND ND - - - - - - - - - - ND -- ND -- ND mgA- 09/24/13 0.052 - - - ND ND - - - - - - - - - - ND -- ND -- ND m9IL 04/25114 0,052 -- -- - ND ND - - - - - -- -- - - - ND -- ND -- ND mgA- 10/02114 0.052 - - - ND 2.4 - - - - - - - - - - ND -- ND -- ND m9IL 04/14115 0,052 -- -- - ND ND - - - - -- -- -- -- -- - ND -- ND -- ND mglL 10/07/15 0.11 - -- - - ND - - - - - - - - - - - - - - ND mg/L 04/18/16 0.11 -- -- -- ND ND - - -- -- -- -- -- -- -- -- ND - ND - ND mg/L 09/2W16 0.11 -- ND -- - - - - - -- ND - ND - ND mg1L D4/25/17 0.11 -- -- -- ND ND -- -- -- -- -- -- -- -- -- -- ND - ND - ND mg/L 10/17/17 0.11 -- ND -- - - - - - -- ND - ND - ND mg/L D4/16118 0.11 - - -- ND ND -- -- -- -- -- -- -- -- -- -- ND - ND - ND uglL 10/16/18 0.11 0.2 - -- - ND - - - - - - - - - - ND - ND - ND u9IL 04/12119 0.14 0.2 -- - ND ND - - -- -- -- -- -- -- -- -- ND -- ND -- ND ug1L 10/07/19 0.14 0.2 - - ND ND - - - - - - - - - - ND -- ND -- ND uglL 04/20120 0.14 02 -- - ND ND - - - - -- -- -- - - - ND -- ND -- -- uglL u IL 10/13120 04/28121 0.14 0.14 0.2 02 - -- - ND - ND ND - - - - - - - - - ND - - - - -- -- -- -- -- - -- ND -- ND -- ND -- ND -- -- - Ethene mgA- 1011 /09 MON - - - ND ND ND - - - - ND ND - - - ND -- -- -- ND (No NC 2L) m9IL 0412910 0.0004 -- -- - ND ND ND - - -- -- ND ND -- -- - ND -- -- -- ND (No EPA MCL) ma OW02110 O.00l14 - - - ND ND ND - - - - ND ND - - - ND -- -- ND m9IL 1012W12 0.00054 -- -- - ND ND - - - -- -- -- -- -- -- - ND -- ND -- ND mgA- 05/02113 0.0015 - - - ND ND - - - - - - - - - - ND -- ND -- ND m9IL 09/24/13 0.0015 -- -- - NO ND - - - - - - - - - - ND -- ND -- ND m9IL M4 &14 0.0015 - - - ND ND - - - - - - - - - - ND -- ND -- ND m9IL 10/02114 0.00062 -- -- - ND ND - - - - - -- -- -- -- - ND -- ND -- ND mglL M/14/15 0.00062 - - - ND ND - - - - - - - - - - ND - ND - ND mg/ L 10/07/15 0.00062 -- -- -- -- ND - - - - - -- -- -- -- -- - - - -- ND -- ND ND - - - - -- ND - ND - ND mg/L 08126/16 0.00038 - - -- -- 0.0015 -- -- -- -- -- -- -- -- -- -- ND - ND - ND -- ND ND -- -- -- -- -- ND - ND - ND mglL 10117/17 0.0015 - - -- -- ND -- -- -- - - -- -- -- -- -- ND - ND - ND -- ND ND -- -- -- -- -- ND - ND - ND mglL 10/1&18 0.0015 0.003 - -- -- ND -- -- -- -- -- -- -- -- -- -- ND - ND - ND -- ND ND -- -- -- -- -- ND - ND - ND mg1L 10/07/19 0.0015 0.003 - - ND ND - - - - - - - -- -- - ND - ND - ND z M12MO 0.0015 0.003 - - ND ND - - - - - - - -- -- - ND - NO - - mglL m IL 101IW20 04Y2W21 0.0015 0.0051 0.003 0.008 - - ND ND ND - - - - - - - - - ND - ND -- ND -- ND ND -- GGaI.G!■ 11 of 12 August 2021 TABLE 4 Smeary of Grondwater Monitoring Resits Detected Conetitente White Street Landfill - Phase II, Permit No. 41413 Greensboro, North Carolina Det-d Monitoring Consthuent Reporting Units Sample Data Method ... Detection Limit Practical DuaMitMion Limit SWS Reporting Limn Upgradient Monitoring Wells MW-13 MW-14 Compile- Downgradierd Monitoring Walls 11.1 11.2 11.3 ll A 11.5 11.6 11.7 II-78 11.8 II-12 Assessment Monitorng Wall IISB Sentlmd Monitoring Wells 114 SMW4 SMW4 SMWd Blanks Methane mg/L 05/OSI08 0Ohm -- -- - 0.135 3.49 - - - - 0.009 0.003 - - - 0.002 -- -- -- ND (No NC 2L) mgH- 10/16I09 0.0002 - - - 0.001 0.266 1.06 - - - - 0.45 0.023 - - - 0.085 -- -- -- ND (NO EPA MCL) mglL 04/29110 0,0002 -- -- - ND 0.00] 1.47 - - - - 0.029 ND - - - 0.006 -- -- -- ND mglL 08/02/10 0.0002 - - - ND 0.213 1.30 - - - - 0.010 0.003 - - - 0.03 - - - ND m9 1 0.0043 -. -. _ 0,0731 - ND 051OV13 0.0004 ND 0412 NO 0 Nmg D mg/L 09/24/13 0.0004 -- -- -- ND 0.0536 -- -- -- -- -- -- -- -- -- -- 0.0113 - 0.0542 - ND eg/L 04/25/14 0.0004 - - - ND 20.8 -- -- -- -- - - -- ND - 23 - ND mglL 10102/14 0.0022 -- -- -- 0.00044 0.211 -- -- -- -- -- -- -- -- -- -- 0.0226 - 0.0956 - ND -- 0.000]N J 0.00509 -- -- -- - - -- 0.00187 - 0.0273 - ND mg/L 10107/15 0,0044 - - -- -- 0,277 -- -- -- -- -- -- -- -- -- -- - - - - ND egrL 04118/i6 0.00044 - - -- ND ND - - - - - - - - - - 0.00316 - 0.043 - ND mg/L 09126/16 0.00044 -- -- - - 0.0778 - -- -- -- -- - -- -- -- -- 0.0258 0.0773 ND mA 04/25/17 0.00044 - - - 0.00214 0.0345 - - - - - - - - - - 0.000621 J -- 0.00112 -- ND mg/L 10117117 0.00044 -- -- - 0.129 - - - - - - - - - - 0.0243 -- 0.155 -- ND mg/L 0416118 0.0044 ND 0.0209 0.M142 0.165 ND mg/L 10116118 0.00045 0.0154 0.00248 0,003 ND1 0411219 I 0.0045 000 . ND 0022 00628 0.06 . NDmg/L mg/L 10107119 0.D0045 0.00 -- - ND 0.05 .. 0.006 0.0444 ND nut 04/20/20 0.00045 001 ND 00166 0.00260.024 - - mglL m L 10/13/20 04128/21 O.OD045 0.004 0.001 0.005 -- - ND ND 0.0686 -- -- - - - - -- -- -- 0.034] -- ND - ND - ND 0.0511 - B= blank -qualified data Shaded = conoeMraSons above applicable EPA MCL nave been shaded. Bold = cencenira8ons above applicable IMAC and/or NC 2L have been loold.d. Data prior to April 2017 p-ded by S&ME Engineering. # = EPA Action Level = EPA Secondary MCL Blanks = field, hip antl method blanks IMAC= Interim Maximum Allowable Concentration (under NC 2L Rules) Laboratory method blank data was unavailable for data prior to April 2011. However, B flags for the 04/i6/09, 10/07109, and 10111/10 were present on laboratory eledronic files. MDL = laboratory method datedion limit ug/L = micrograms per liter Notes: mglL= milligrams penile, nM = nano mots SWS Reporting Limit= NCPCL prior to 2007 antl NCSWSL starting on 01/18/07 -= no data available or no limit established NC 2L = North Carolina Water Quality Standard ND = not data= above the laboratory detection limit or stated reporting limit. J = Prior to the The following dilutions were noted for the April 2021 event: Antimony and Thallium (2x) in all wells; 1,4-dioxane @ II-1 (Sx) & II-8 (10x); chloride @ II-1 (40x) & SMW-3 (5x); sulfate II-1 (20x), II-9 (5x) & SMW-3 (5x); alkalinity II-1 (10x) & SMW43 EPA MCL = Unite t States Environmental Protection Agency Maximum Contaminant Limit GL:a I.G!■ 12 of 12 August 2021 19131339.103 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase 11, Permit No. 41-03 Greensboro, North Carolina Assessment Detected Monitoring Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Sentinel Monitoring Wells Constituent/Parameter Units Data Well MW-13 MW-14 II-1 II-2 113 I14A II-5 II-6 II-7 II-7B 11-8 11-12 11313 II-9 SMW-1 SMW3 SMW-4 pH (Field) S.U. 03/25/99 5.94 6.82 5.69 5.98 6.17 NI 5.92 6.39 5.99 NI 6.48 NI NI NI NI NI NI S.U. 09/22/99 6.15 6.05 5.77 6.65 6.12 NI 5.94 6.24 6.25 Ni 6.49 Ni Ni Ni Ni Ni Ni S.U. 03/27/00 6.61 7.76 -- 6.27 6.09 Ni 6.34 7.11 6.06 NI 6.39 Ni NI Ni Ni NI Ni S.U. 09/13/00 6.70 6.62 -- 6.67 6.67 NI 6.49 6.72 6.41 NI 6.39 Ni Ni NI Ni Ni Ni S.U. 03/13/01 6.55 5.71 -- 7.21 6.38 Ni 6.01 6.01 5.31 -- 6.31 Ni NI Ni Ni NI Ni S 09131 629 520 6.21 8 6-_8-_ 6_0_ NI 6.03 6..-4- 3 6.-0- 4 10-.-71 6.28 Ni NI Ni Ni Ni N_- N8/0 7. 48 5.76 0S.U. 7.6 60 Ni 6.05 6.53 5.57 10.15 6.38 NI NI NI NI NI Ni S 09/15/02 6.44 6.65 6.25 7.01 6.17 NI 6.19 6.45 5.70 10.59 6.88 NI NI NI NI NI NI S.U. 04/103 -- -- N -- N N 10/15/0 67 64 6. 3 727 637 NI 6 NI I NI I NI I NI IS NI NI S.U. 034 /24/03 6. 02 7.3 20 8.32 8.07 N 6.65 7.94 7.67 10.89 76 N N N N N N S.0 09/22/04 6.96 6.1 6.3 7.13 6.43 NI 6.47 6.63 5.87 7.33 7.33 NI NI NI NI NI NI 05/09/05 . 858 6 01 8.74 8.37 NI 8.47 804 8.03 10.S.U. 77 811 N N N N N N S.U. 10/11/05 6.50 5.52 5.95 22 6.11 NI 6.00 6.41 5.48 11.30 6.18 NI NI NI NI S.U. 04/24/06 -- -- -- -- NI -- -- NI NI NI N 6 -- 5.4 6.2 6.85 NI 602 .0 63 52 .2 11.16 618 .8 NI I NI I NI NIS.0 04/127 /0 . 70 6.13 N 0 66 645 56 1S.0 62 N NI NI N S.U. 09/26/07 64 51 6.1 I 6.3 6.28 5.58 11.2 6.1 NI NI NI NI SU 04/29/08 6.48 5.669 6.30 .. 686 5.93 NI 6.4 5.53 9.50 10.80 6.217 6.-54 N N N N 12/03/08 7.2 6.47 7. 7.5 6.00 NI 7. 6.3 6 11.63 6.9 -- NI I NI I NI NIS.0 S.U. 04/17/09 7.2 6.47 7.04 7.555 NI 7.10 6.35 6.1 0 11.63 6.90 7 N N N N9 S.U. 10/13/09 9.18 8. 8 .39 1 8 .89 9 20 3 9.7 NI -- NI NI NI S.U. 04/28/10 6.60 5.35 6.2 6. 5.79 NI 6.24 6.41 10.49 6.18 6.1685 N 61 NI NI N 08/02/10 6.87 7.48 4 NI 7. 03 657 74 654S.0 S.U. 10/111//110 7.50 6.44 6.95 7.54 6.6 NI 7.0 1 7.04 7.46 NI 6.99 6.47 161 6.72 S.0 051 __ __ N __ __ __ __ NI __ __ -- _I S.U. 100 11 761 6.25 68 7.55 62NI 7 .43 59 12.24 70 7.65 6.95 6.9 A6 7.38 6.31 .. 0/11SU 7.83 6.81 7.25 79 6.58 NI 7.73 7.46 6..2 1221 7.33 802 S 10/27/2 2/12 7.88 6.-4- 7.48 8.37 6.-9- N. 8.15 8.16 6607 0 12--.--7 8 7.--7-- 9 7...--7 - -- -- -- -- S.U. 04/24/13 6. 683 771 8.37 7.116 NI 7.83 7.4 6.9 12.94 737 8.3-- 7...---- ..--8-- 5 ....--9- .. 09/10/13 339 6.71 7.3 8.13 6.78 71 7.67 781 7.104 1. 231 1SU 7.6 7.96 7.58 8 7.65 67 7.93 71 S 04/23/14 8.4 7.7 7.82 792 7. 7.41 7.72 7.06 72 12.27 6.56 7.82 841 7.26 8.1 886 8.23831 S.U. 10/03/14 7.6 6.55 7.28 7.54 6.064 9 6.91 7.14 7.44 6.62 10.39 714 7.79 74 7.43 753 7.65 709 S.U. 04/14/15 6.7 5.70 6.3 6.7 5.77 592 6.27 5.8 5.7 9.37 6.22 661 623 633 .--0-- 5.76 654 .--1-- 632 10/05/15 6.47 6.02 6.56 8 5.0 582 .34 6.66 3 3 0-- 6.0 63 6.09 609 5.27 21 551S.0 S.U. 04/19/16 6.36 4.9 6.4 5.66 6 6.22 5.98 5. 997 6.1 646 59 5.57 - - S.U. 09/26/16 6.54 6.29 6.01 5.63 5.90 6.22 6.58 5.5548 9.22 6.07 6.42 6.16 6.11 5.6 6.45 5.8 03/21/17 -- 6.24 6.50 5.78 6.40 552S.U. S.U. 04/25/17 6. 6.16 6.47 5.56 5.68 6.28 5.52 4.88 89 6.15 6.49 5.94 5.93 5.64 5.98 5.93 S.0 10/17/17 655 6.28 6.44 57 5.99 6.39 674 5.46 8.52 7.58 6.58 6.21 6.16 5.89 6.53 6.01 (verification event) S.0 12/21/17 -- -- 6.29 -- 5.63 -- 6.59 - SU. 04/16/18 6.50 5.58 6.37 6.31 5.45 5.72 6.19 5.92 5.55 7.72 6.08 6.32 6.25 6.24 5.92 6.45 6.10 S.U. 10/16/18 6.309 -- 6.29 6.52 5.53 5.85 6.23 6.47 5.44 7.72 6.21 6.61 6.37 5.86 5.39 5.96 5.89 (verification event) S.U. 02/20/19 -- -- -- -- 5.66 -- -- -- -- -- -- -- -- -- -- -- 6.21 S.U. 04/09/19 6.67 4.74 6.56 6.47 5.67 5.96 6.38 5.76 5.43 6.70 6.16 6.90 6.20 5.69 6.28 6.43 6.40 S.U. 10/07/19 6.43 5.09 5.00 6.51 5.61 6.05 6.53 6.63 6.94 8.71 6.32 6.68 6.33 6.48 5.77 6.47 6.47 (verification event) S.U. 01/22/20 -- -- 6.37 -- -- -- -- -- -- -- 6.03 -- -- -- -- -- 6.16 S.U. 04/20/20 6.49 4.94 6.37 6.59 5.58 6.06 6.52 6.23 5.48 7.43 6.17 6.59 6.30 5.93 5.53 6.38 6.21 S.U. 10/13/20 5.90 4.99 6.36 6.46 5.60 5.78 6.27 6.48 5.15 6.88 6.17 6.07 6.22 6.11 5.96 6.20 5.80 S.U. 04/28/21 6.77 5.45 6.59 6.90 5.81 6.19 6.58 5.96 5.69 7.46 6.28 6.87 6.59 5.75 5.99 6.54 6.43 Spec Conductance (Field) uS/cm 05/25/99 299 81 771 1475 2007 NI 599 1556 106 - 594 Ni Ni Ni Ni Ni Ni uS/an 09/22/99 320 24 833 809 141 NI 580 752 63 - 55 NI NI NI NI NI NI uS/cm 03/27/00 353 101 -- 571 970 Ni 540 204 89 - 604 Ni Ni Ni Ni Ni Ni uS/cm 09/13/00 335 44 -- 595 275 NI 553 436 96 -- 604 NI NI NI NI NI NI US/cm 03/13/01 7520 19102 -- 6223 6128 NI 11296 9121 8287 -- 9472 Ni Ni Ni Ni Ni Ni US/cm 09/13/01 88838 173392 59174 54857 40741 NI 53504 43038 183942 86446 33529 NI NI NI NI NI NI us/cm 03/08/02 676 223 1497 1298 464 Ni 935 896 311 578 1365 NI NI NI NI NI NI US/cm 09/118/0 658 142 15901 1200 356 NI 8622 2987 163 572 1351 NI NI NI N--II N--II I N-- 0/5uS/cm 3 -- - N -- - N N N N N N US/cm 3 480 44 1308 820 808 NI 662 1970 113 794 128 NI NI NI NI NI NI uS/cm 03/24/04 428 56 221 845 1327 NI 80 1411 137 851 867 N N N N N N US/cm 09/22/04 472 46 1800 958 530 NI 73 1491 128 468 1448 NI NI NI NI NI NI uS/cm 0509/05 434 4 1610 970 109 N 785 2270 187 92 1520 N N N N N N 1011/05 576 92 1960 11-23 482 N 871 4450 295 966 1690 N I NI IuS/cm NI N uS/cm 4//24/0 -- -- N N 109/O6 -- 57 2210 1120 46 NI 952 4110 152 890 2020 IN NI IuS/cm N N uS/cm 51 47 2180 1040 434 N 86 2070 242 87 2110 -- N -- N N N US/cm 6/07 582 50 2300 1035 414 NI 891 1010 246 885 2120 N N N N 04/29/08 45.7 7 270 108 453 NI 34 1 9.5 70.3 238 121.7 N I NI IuS/cm NI N US/cm 8 5390 71 264 1053 442 N 385 13.1 16 64 2680 N N N N 04/17/0 539 71 264 10 442 NI 35 11 4 160 648 26 1.06 N -- NI IuS/c N N US/cm 9 70 0 19145 457 2 639 2730 2.83 N NI NI N us/cm 04/28/10 439 42 2320 388 N 536 2460 242 520 2370 909 N 49 N N N US/cm 08/02/10 - - 2460 91 22 - NI - 194 505 - N 641 207 478 102IIIIIIIIII 'I us/cm 10/11/10 446 60 2590 177 397 NI 615 308 168 538 53 1028 N 535 158 498 858 US/cm 05/11/11 - - - - N - - N - US/cm 10/06/11 447 78 3020 938 413 NI 460 3100 172 481 2530 931 562 535 147 363 642 uS/- 04/17/12 416 65 2470 94 424 NI 38 534 272 489 2850 767 -- -- -- -- -- uS/cm 10/22/12 399 71 2760 95 420 NI 36 2.6 360 498 2990 950 -- -- -- -- -- US/cm 04/24/13 410 69 2150 97 464.0 NI 34 260 233 505 3110 863 532 755 211 491 821 US/cm 09/10/13 414 57 2800 92 455 167 461 2.74 447 493 3280 975 553 813 241 556 862 US/cm 04/23/14 395 56 2490 9870 479 1800 197 106 224 500 3380 596 544 188 202 529 803 US/cm 10/03/14 425 48 3250 1029 488 1730 509 3190 559 514 3530 995 567 854 375 628 1124 US/cm 04/14/15 268 34 1918 678 345 1153 266 188 246 337 2199 530 366 509 121 389 561 us/cm 10/05/15 304 -- 2617 757 375 1369 241 1245 328 395 2922 387 442 625 150 298 270 US/cm 04/19/16 323 38 2838 1047 477 1747 567 365 542 493 3691 851 563 289 -- -- -- uS/cm 09/26/16 340 -- 2618 988 457 1611 815 2522 646 485 3124 768 548 758 329 712 845 uS/cm 03/21/17 -- -- 3189 987 -- 1773 -- 1876 610 -- -- -- -- -- -- -- -- uS/cm 04/25/17 362 56 2996 1017 480 1587 379 68 100 472 3916 349 527 730 191 213 234 US/cm 10/17/17 367 -- 2929 946 498 1733 781 2987 643 565 3839 612 547 783 262 778 806 (verification event) uS/cm 12/21/17 -- -- 3058 -- 482 -- -- 2986 -- -- -- -- -- -- -- -- -- uS/cm 04/16/18 321 99 3622 992 540 1915 259 482 196 696 3147 621 544 778 272 900 298 uS/cm 10/1fi/18 317 -- 2776 836 407 1650 448.4 1102 142 526 3462 489.5 144 174.9 208 258.7 324 (verification event) uS/cm 02/20/19 -- -- -- -- 459 -- -- -- -- -- -- -- -- -- -- -- 306 uZcm 04/09/19 368 34 2619 1001 455 1863 355 135 180 664 4158 455 531 383 539 844 439 US/cm 10/07/19 287 31 339 911 432 1414 999 1981 88 86 3377 701 491 97 5229 111 81 (verification event) uS/cm 01/22/20 -- -- 2902 -- -- -- -- -- -- -- 4215 -- -- -- -- -- 517 US= 04/20/20 424 31 3056 800 360 1298 393 755 264 524 4327 716 416 377 220 691 851 US/cm 10/13/20 393 50 2659 940 414 1389 307 1092 187 587 3878 370 546 845 302 514 372 uS/cm 04/28/21 425 45 2853 902 408 1402 331 244 328 675 4353 687 541 319 219 941 695 Temperature (Field) °°C 05/25/99 14.42 14..90 145 14..65 145 NII 11.3 133 12.95 16.02 NI NI NI NI NI NI C 09/22/99 14.4 1501 16.65 15.38 15.37 N 17.78 16..7 15.66 18.3 N N N N NI NI 03/27/0 1430 14.6 14.58 15.01 N 11.93 1283 137 16.27 N N NI I°C N N N 09/13/0 1570 140 16.07 16.06 N 1897 17.1 15.82 16.27 N N N N N N IIIIIII °C 03/13/00 15.04 16. 18 15.57 15.26 N 11.3 13.67 1. 16.41 NI NI NI NI NI N °C 09/13/01 15.73 15.65 172 165 176 NI 2008 18.24 1424 2068 18.10 I NI I NI I NI I NI I NI N °C 03/08/02 142 14.74 13.73 15.51 NI 1231 12.70 16.1 408 14.45 16.0 N NI NI NI NI N °C 0918/02 10.56 10.26 10.89 11-45 12-.-53 NI 14.29 11.87 10.62 10.35 1321 NI NI NI NI NI N °C 0415/0 - - - N - - - Ni NI NI NI NI N °C 10/5/03 14.67 147 16.00 157 16.39 NI 1767 1617 1528 15.50 16.50 Ni NI NI NI NI NI °C 03/24/04 144 15.05 1331 15.48 1493 NI 11.23 13.5 13.97 149 15.54 NI NI NI NI NI N °C 09/22/04 16. 1540 16.10 16.60 16.90 N 191 17.08 165 15.5 166 N N N N N NI °C C 059/0 1. 22.7 15.99 207 20.32 NI 15.807 12.50 19.10 19.36 17.37 NI NI NI NI NI N 1 10/010S 12.80 2070 17.60 16.70 23.10 NI 17.60 18.70 17.00 15.70 160 6 N NI NI N °C C 04/24/O -- -- -- -- -- NI -- -- -- -- -- -- IN -- N--I N 10/196 19.62 808 176 1835 N 1947 . 183 17.99 174 .. . 1674 N NI N IC N 04/1/0 915 17. 9 N 004 555 71 713 42 N N N NC 09/26/07 23.41 22.80 22 . 234 22.64 N 758 29.18 1.. 59 1801 N I NI IC NI N 04/29/0 1. 45 16.16 11.2 48 15.7 N 1. 1565 1.5 1oC 419 13.95 N N N N o 12/03/08 1.3 6.2 7 .1 16.2 7 -- N N N N oC 04/17/09 145 43 .5 162 12.67 165 8 16.2 N 158 .9 119C 6 16.18 13.38 9.47 11.4 N NI NI N 10/13/09 13.65 1850 13.46 1492 140 NI 18.6 7 12.15 117 21.4 1201 N NI NI N °C C 04/28/10 14.56 21.23 13.88 14.78 18.655 NI 22.07 14.4 1812 14.19 1822 1594 N 16.37 N N N 08/02/10 -- 2034 22.5 -- NI 25.17 23.19 -- -- NI 20.45 °C C 1 1. 7 12.95 1 I 10 8 14.03 C 011/1 5/1 __ __ __ N __ Ni __ __ __ -- °c °C 10/06/11 187 22.02 208 19.70 19.93 NI 190 19.13 18.71 18.42 167 18.68 19.11 14.0 8.37 16.81 3IIIIIIIII 17.- 5 C 04/17/12 14.07 155 19.33 .5 190 . 2435 NI 16. . 137 24.72 21.74 14.18 141 -----I 10/22/12 12.98 26.91 1.3 59 2 058 N 34 51 14.00 109 2 - - -C - C 04/24/13 1374 14.93 14.1 158 19 NI 1531 134 14.14 1458 15.10 1453 1478 1344 130 14.28 12.31 °C 09/10/13 23.0 19.75 20.60 15.48 261.833 . 230 21.42 23.1 18.09 17.92 26.26 21.24 644 1589 18.95 20.21 1881 04/23/14 1652 17.52 12.21 0 174 10.88 8.38 17.51 165 1C 873 147 14.45 1773 1866 °C 10/03/14 11.86 150 19.84 149 22.00 23.4 25.12 19.55 196 21.04 22.95 21t 15.07 1889 16.29 19.15 18.9 C 04/14/15 13.96 15.23 1506 17.58 1753 17.89 1.26 16.3 17.61 17.93 . 1364 1279 . 16.82 1207 . 1202 . 1328 12.09 4 10/05/15 15.81 1. 991 15.4 1. 627 12 .6 871 16.17 17.4 18.75 86 696 So 1. 478 957 746 73C C 04/19/16 16.29 15.86 20.67 5.36 1894 198 6 . 183 2043 286 1461 13.64 6.46 °C 09/26/16 18.06 - 193 21.82 16.75 18.7 22.56 17.92 19.10 18.66 22.22 982 20.45 17.18 18.00 17.86 17.54 C 03/21/17 18.27 18.57 151 -- 18.02 17.22 -- - -- -- -- -- -- -- °C 04/25/17 14.35 15.79 14.21 17.68 17.07 14.78 13.99 17.00 15.32 16.61 16.37 15.69 16.82 15.00 15.07 15.68 14.76 °C 10/17/17 14.77 -- 16.00 17.37 17.01 17.53 19.71 16.70 16.33 16.68 17.85 18.85 17.67 15.84 17.32 16.38 16.49 (verification event) °C 12/21/17 -- -- 15.22 -- 16.27 -- -- 13.83 -- -- -- -- -- -- -- -- -- °C 04/16/18 14.3 15.4 12.9 16.9 17.1 16.4 15.6 15.1 16.1 16.2 17.7 14.6 15.3 13.1 12.6 14.4 13.3 °C 10/16/18 16.3 -- 17.1 17.0 i6.6 15.8 18.1 16.7 16.4 16.5 17.5 19.0 18.4 16.8 19.5 18.3 17.8 (verification event) °C 02/20/19 -- -- -- -- 14.4 -- -- -- -- -- -- -- -- -- -- -- 11.1 °C 0409/19 15.7 17.1 13.6 16.7 17.3 14.1 14.5 14.6 15.2 16.5 17.9 16.7 17.5 13.5 13.1 13.8 13.7 °C 10;07/19 17.7 18.4 17.6 18.5 19.4 17.0 18.8 17.8 17.8 18.1 18.4 18.4 17.0 16.1 18.2 17.1 17.0 (verification event) °C 01/22/20 -- -- 14.0 -- -- -- -- -- -- -- 16.2 -- -- -- -- -- 10.8 °C 04/20/20 15.2 15.7 14.2 16.7 16.7 14.8 14.1 14.3 13.6 15.8 17.1 16.2 15.8 13.7 14.0 14.3 14.3 °C 10/13/20 17.1 16.7 17.6 18.0 18.1 16.2 17.3 17.8 i6.6 15.8 19.0 17.3 18.2 i6.6 18.6 18.1 17.2 °C 04/28/21 14.8 16.1 14.0 18.0 18.0 14.8 14.3 15.0 16.2 16.6 16.7 14.8 16.7 14.2 15.5 14.8 15.0 Gd1.PEp .......= 1 of 2 August 2021 19131339.103 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Assessment Detected Monitoring Reporting Sample Upgradient Monitoring Wells Compliance Downgraient Monitoring Wells Monitoring Sentinel Monitoring Wells ConstituenVParameter Units Data Well MW-13 MW-14 II-1 II-2 113 114A II-5 II-6 II-7 II-7B II-8 II-12 II-3B II-9 SMW-1 SMW3 SMW4 Turbidity (Field) NTU 05/25/99 -- -- -- -- -- Ni -- -- -- -- -- Ni Ni Ni NI NI Ni NTU 09/22/99 -- -- -- -- -- NI -- -- -- -- -- NI Ni NI NI NI NI NTU 03/27/00 -- -- -- -- -- Ni -- -- -- -- -- Ni Ni Ni Ni NI Ni NTU 09/13/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI NTU 03/13/01 -- -- - -- -- Ni -- -- -- -- -- Ni Ni Ni Ni NI Ni NTU 09/13/01 - -- - -- -- NI - - - - - NI NI NI NI NI NI NTU 03/08/02 - - - - - Ni - - - - - Ni Ni Ni Ni Ni Ni NTU 09/18/02 - - - - - NI - - - - - NI NI NI NI NI NI NTU 04/15/03 - - - - - Ni - - - - - Ni Ni Ni Ni Ni Ni NTU 10/15/03 - - - - - NI - - - - - NI NI NI NI NI NI NTU 03/24/04 - - - - - NI - - - - - NI NI NI Ni NI NI NTU 09/22/04 - - -- -- -- NI -- -- -- - - NI NI NI NI NI NI NTU 05/09/05 1.01 9.33 6.45 14.28 115 Ni 7.54 3.98 0.82 0.22 1.27 Ni NI NI Ni Ni Ni NTU 10/11/05 10.0 6.00 2.13 4.47 47.1 NI 59.0 8.00 0.22 0.42 2.24 - NI - NI NI NI NTU 04/24/06 - - -- -- -- Ni -- -- -- - - -- Ni -- Ni NI Ni NTU 10/19/06 - 4.81 4.44 1.24 115 NI 21.0 7.43 0.77 0.55 1.35 - NI - NI NI NI NTU 04/12/07 - - - -- -- Ni -- -- -- - - -- Ni -- NI NI NI NTU 09/26/07 - - - -- -- NI -- -- -- -- -- -- NI -- NI Ni NI NTU 04/29/08 -- -- -- -- -- Ni -- -- -- -- -- -- Ni -- Ni NI Ni NTU 12/03/08 4.42 4.80 5.64 2.99 18.8 NI 32.8 10.26 3.35 3.46 3.75 -- Ni -- NI Ni NI NTU 04/17/09 -- -- -- -- -- Ni -- -- -- -- -- - NI -- Ni NI NI NTU 10/13/09 -- -- -- -- -- NI -- -- -- -- -- -- NI Ni NI NI NTU 04/28/10 6.98 3.23 21.50 6.57 15.32 NI 14.38 10.66 2.28 3.13 5.16 6.48 NI 12.75 Ni Ni Ni NTU 08/02/10 -- -- 8.93 5.18 -- NI -- -- 4.76 3.85 -- -- NI 10.05 40.6 9.73 10.73 NTU 10/11/10 3.28 5.01 11.64 4.95 11.99 NI 11.96 13.56 4.55 2.8 9.3 6.12 NI 35.7 45.9 44.7 14.17 NTU 05/11/11 __ __ __ __ __ NI __ __ __ __ __ NI - __ __ -- NTU 10/06/11 6.75 5.87 8.08 6.65 12.35 NI 34.8 38.0 8.09 6.86 5.51 7.55 15.33 35.7 20.6 57.0 15.07 NTU 04/17/12 4.28 5.57 6.24 4.24 12.59 NI 10.16 5.90 4.12 3.44 4.45 4.19 -- -- -- -- -- NTU 10/22/12 4.65 7.09 5.75 6.83 18.35 NI 9.37 10.43 4.71 6.58 10.2 5.22 -- -- -- -- -- NTU 04/24/13 9.00 7.44 6.01 5.76 18.48 NI 19.0 8.49 7.08 5.97 5.3 6.49 5.42 6.50 14.18 5.95 6.55 NTU 09/10/13 4.16 7.44 6.18 10.94 15.89 9.12 6.69 6.99 4.41 5.09 4.72 32.8 12.75 14.69 9.05 26.3 7.58 NTU 04/23/14 4.72 4.61 4.51 5.57 8.43 4.64 9.18 8.81 6.58 6.06 5.05 30.1 4.68 6.34 7.49 11.97 4.15 NTU 10/03/14 5.76 6.94 7.86 7.04 8.69 5.88 6.99 19.8 4.86 7.54 6.17 12.94 6.07 11.85 9.99 8.74 7.44 NTU 04/14/15 3.34 3.91 5.57 24.30 6.09 3.4 9.28 4.46 4.77 2.81 1.97 5.09 2.43 1.84 4.00 10.55 4.14 NTU 10/05/15 1.62 - 0.00 0.35 5.20 0.00 80.0 9.00 0.35 0.00 0.00 32.9 0.00 12.1 19.2 9.30 11.1 NTU 04/19/16 2.01 7.52 5.77 1.01 19.8 1.03 16.9 9.81 2.89 5.21 3.35 32.8 4.22 5.46 6.10 12.35 3.52 NTU 09/26/16 21.3 - 0.33 0.30 6.26 0.47 3.12 16.99 4.31 1.78 1.79 3.74 0.56 2.40 3.10 1.42 0.32 NTU 03/21/17 - - 1.62 0.72 - 0.39 - 5.95 3.75 - - - - - - - - NTU 04/25/17 10.3 1.39 1.52 3.32 24.5 0.79 108 60.4 5.76 1.66 2.33 94.6 2.32 8.73 44.7 18.6 24.5 NTU 10/17/17 3.58 -- 6.87 0.57 7.44 0.83 33.4 9.70 1.23 0.71 0.97 8.31 4.98 9.32 2.99 8.03 2.95 (verification event) NTU 12/21/17 -- -- 1.29 -- 9.59 -- -- 28.7 -- -- -- -- -- -- -- -- -- NTU 04/16/18 2.56 9.28 0.61 0.58 2.09 0.26 49.7 8.13 1.96 0.67 9.30 9.85 8.87 4.44 9.12 8.45 7.57 NTU 10/16/18 3.07 -- 0.28 0.99 8.01 9.8 19.8 6.27 8.19 0.3 2.89 8.38 15.0 9.19 5.89 8.11 2.92 (verification event) NTU 02/20/19 -- -- -- -- 12.0 -- -- -- -- -- -- -- -- -- -- -- 7.02 NTU 04/09/19 3.46 2.25 1.30 1.11 21.1 1.12 40.5 16.7 4.66 0.47 3.32 7.75 7.01 9.94 5.03 6.29 1.63 NTU 10/07/19 1.35 0.67 4.98 0.67 9.01 1.00 9.67 9.20 2.60 2.53 2.53 35.4 3.64 8.28 7.91 9.90 3.74 (verification event) NTU 01/22/20 -- -- 1.42 -- -- -- -- -- -- - 1.99 -- -- -- -- -- 2.71 NTU 04/20/20 1.33 0.69 1.21 3.24 8.74 1.15 30.1 7.66 2.57 1.15 2.33 14.8 9.27 7.55 5.47 9.57 1.57 NTU 10/13/20 0.98 0.57 0.92 2.52 16.9 0.48 21.3 5.53 1.60 1.79 1.93 9.48 7.20 5.31 19.2 6.39 5.51 NTU 04/28/21 0.80 1.38 9.20 3.03 9.89 2.51 35.6 9.77 0.89 2.13 1.28 7.63 8.83 9.89 9.71 9.71 3.71 Oxidation Reduction mV 05/25/99 - - - - - Ni - - - - - Ni Ni Ni Ni Ni Ni Potential (Field) mV 09/22/99 - - - - - NI - - - - - NI NI NI NI NI NI mV 03/27/00 - - - - - Ni - - - - - Ni Ni Ni Ni Ni Ni mV 09/13/00 - - - -- -- NI - - - - -- NI Ni NI NI Ni NI mV 03/13/01 - - - -- -- Ni - - -- - -- Ni Ni Ni Ni Ni Ni mV 09/13/01 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mV 03/08/02 -- -- -- -- -- Ni -- -- -- -- -- Ni Ni Ni Ni Ni Ni mV 09/18/02 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mV 04/15/03 -- -- -- -- -- Ni -- -- -- -- -- Ni Ni Ni Ni NI NI mV 10/15/03 -- -- -- -- -- NI -- -- -- - -- NI NI NI NI NI NI mV 03/24/04 -- -- -- -- -- NI -- -- -- - - Ni NI Ni Ni NI Ni mV 09/22/04 - - - - - NI - - - - - NI NI NI NI NI NI mV 05/09/05 -65 -2 -310 -159 -198 NI -266 -278 -240 -139 -278 Ni NI Ni Ni NI Ni mV 10/11/05 197 92 67 136 57 NI 89 -57 189 78 42 - NI - NI NI NI mV 04/24/06 - - - - - NI - - - - - - Ni - NI Ni Ni mV 10/19/06 - 40 -159 -174 -95 NI -161 -148 -115 -284 -237 - NI - NI NI NI mV 04/12/07 - - - - - Ni - - - - - - Ni - Ni Ni Ni mV 09/26/07 - - - - - NI - - - - - - NI - NI NI NI mV 04/29/08 - - - - - Ni - - - - - - Ni - Ni Ni Ni mV 12/03/08 105 171 83 49 77 NI 105 181 -47 204 -87 - NI - NI NI NI mV 04/17/09 - - - - - Ni - - - -- -- -- Ni -- Ni Ni Ni mV 10/13/09 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mV 04/28/10 288 446 245 182 284 Ni 244 193 332 159 309 79 Ni 367 Ni Ni Ni mV 08/02/10 -- -- 186 142 -- NI -- -- 310 94 -- -- NI 274 212 213 288 mV 10/11/10 244 345 192 177 247 Ni 122 66 399 108 170 53 Ni 180 278 127 334 mV 05/11/11 -- -- -- -- -- NI -- -- -- -- -- -- NI -- -- -- -- mV 10/06/11 166 235 85 35 161 Ni 113 -11 299 20 96 -46 98 180 266 181 286 mV 04/17/12 171 240 97 16 154 NI 153 194 258 -28 90 -42 -- -- -- -- -- mV 10/22/12 127 235 95 41 137 Ni 88 -45 221 34 49 30 -- -- -- -- -- mV 04/24/13 178 264 146 23 130 NI 185 206 202 17 58 -60 114 222 158 86 272 mV 09/10/13 116 237 48 30 120 181 -17 39 175 -165 73 -52 120 84 113 58 117 mV 04/23/14 118 165 105 58 141 118 105 178 208 33 87 3 103 196 130 21 147 mV 10/03/14 109 204 54 26 13 -14 59 -111 182 -3 19 -119 96 17 -123 -18 49 mV 04/14/15 50 86 30 8 54 -10 38 67 67 -38 33 -127 36 78 58 -14 1.2 mV 10/05/15 -38.4 -- -38 -14 -40 -46 6 -31 -29 -56.6 -39 -90 -42 -59 -66 -37 -37 mV 04/19/16 135.0 266.0 21.0 31.7 142.0 89.0 63.0 103.0 214.0 -78.1 117.5 -78.0 126.0 139.0 131 50 111 mV 09/26/16 42.2 - - 26 69.00 87 42 -72 103 94.1 50 -48 61 19 24 34 42 mV 03/21/17 - - -22 38 - 8 - -61 159 - - - - - - - - mV 04/25/17 154.9 143.4 83.3 28.5 67.6 113.2 101.9 120 101.9 130.0 29.2 -41.3 67.9 76.0 99.0 105.7 112.1 mV 10/17/17 154.1 - -23.1 73.8 79.9 88.8 14.0 -89.1 132.1 120.7 39.5 41.7 34.1 66.7 19.2 16.7 52.8 (verification event) mV 12/21/17 - - 9.1 - 66.0 - - 48.7 - - - - - - - - - mV 04/16/18 364.8 - 412.0 24.7 86.9 44.0 61.1 100.4 372.3 286.1 203.1 0.52 314.4 391.2 342.0 279.0 367.2 mV 10/16/18 158.7 - 59.7 20.7 135.8 83.4 60.0 -31.7 197.3 105.6 80.8 -99.40 26.4 128.5 187.0 165.8 180.2 (verification event) mV 02/20/19 - - - - 317.0 - - - - - - - - - - - 339.1 mV 04/09/19 41.2 103.7 39.1 152.4 286.5 332.1 307.5 38.2 43.8 73.7 40.7 -103.6 162.2 345.3 104.7 90.5 -70.9 mV 10/07/19 196.3 250.3 -96.3 57.6 132.9 106.9 18.4 -65.9 -115.9 -221.7 83.1 -89.3 67.9 115.6 54.2 17.9 104.3 (verification event) mV 01/22/20 - - -222.7 - - - - - - - -230.9 - - - - - -171.1 mV 04/20/20 91.3 254.9 25.3 22.0 184.9 23.2 73.0 28.5 257.3 88.6 64.0 -75.2 64.7 557.0 110.0 71.0 121.0 mV 10/13/20 39.7 301.7 10.8 -8.3 211.2 -152.4 50.5 -77.9 75.3 -59.5 -190.4 -47.7 54.2 113.4 83.1 99.5 -80.2 mV 04/28/21 188.9 255.9 17.1 1.7 464.2 48.1 -14.6 166.7 197.1 113.2 78.1 -92.5 58.5 219.3 74.7 12.9 121.4 Dissolved Oxygen (Field) mg/L 05/25/99 - - - - - Ni - - - - - Ni Ni Ni Ni Ni Ni mg/L 09/22/99 - - -- - -- NI - - - - -- NI Ni NI NI NI NI mg/L 03/27/00 - -- -- -- -- Ni -- -- -- -- -- Ni Ni Ni Ni Ni Ni mg/L 09/13/00 -- -- -- -- -- NI -- -- -- -- -- NI NI NI NI NI NI mg/L 03/13/01 -- -- -- -- -- Ni -- -- -- -- -- Ni Ni Ni Ni Ni Ni mg/L 09/13/01 -- -- -- -- -- Ni -- -- -- -- -- Ni Ni NI NI NI NI mg/L 03/08/02 -- -- -- -- -- NI -- -- -- -- -- Ni Ni Ni Ni Ni Ni mg/L 09/18/02 -- - - - - NI - - - - - NI NI NI NI NI NI mg/L 04/15/03 - - - - - NI - - - - - NI NI NI NI NI NI mg/L 10/15/03 - - - - - NI - - - - - NI NI NI NI NI NI mg/L 03/24/04 - - - - - Ni - - - - - Ni Ni Ni Ni Ni Ni mg/L 09/22/04 - - - - - NI - - - - - NI NI NI NI NI NI mg/L 05/09/05 3.61 6.33 0.38 4.33 0.40 NI 0.72 2.15 0.40 0.66 2.83 Ni Ni Ni Ni Ni Ni mg/L 10/11/05 5.69 6.25 1.64 4.42 2.61 NI 3.69 3.29 1.39 2.59 0.49 - NI - NI NI NI mg/L 04/24/06 - -- -- -- -- Ni -- - -- -- -- -- Ni -- Ni Ni Ni mg/L 10/19/06 - 5.49 0.58 1.55 1.49 NI 1.22 1.28 0.88 0.50 0.40 - NI - NI NI NI mg/L 04/12/07 -- -- -- -- -- Ni -- -- -- -- -- -- Ni -- Ni Ni Ni mg/L 09/26/07 -- -- -- -- -- NI -- -- -- -- -- -- Ni -- NI NI NI mg/L 04/29/08 -- -- -- -- -- Ni -- -- -- -- -- -- Ni -- NI NI NI mg/L 12/03/08 5.01 5.82 2.11 2.78 2.46 Ni 1.66 6.29 2.13 0.71 1.86 -- Ni -- Ni Ni Ni mg/L 04/17/09 -- -- -- -- -- NI -- -- -- -- -- -- NI -- NI NI NI mg/L 10/13/0' -- -- -- -- -- NI -- -- -- - -- -- NI -- Ni Ni Ni mg/L 04/28/10 6.94 4.92 0.51 6.23 1.11 NI 2.81 4.80 5.10 2.59 0.39 1.10 NI 0.81 NI NI NI mg/L 08/02/10 -- -- 0.49 2.21 -- NI -- -- 0.61 1.96 -- -- NI 0.15 0.09 0.12 0.76 mg/L 10/11/10 3.49 3.40 0.28 2.52 0.39 NI 1.49 3.32 2.46 1.21 0.55 0.39 NI 0.47 0.58 0.54 1.57 mg/L 05/11/11 -- -- -- -- -- NI -- -- -- -- -- -- NI -- -- -- -- mg/L 10/06/11 4.49 4.87 0.49 3.29 1.72 NI 3.03 3.83 2.65 1.28 1.38 0.41 0.63 0.47 0.37 1.11 1.29 mg/L 04/17/12 4.75 4.37 0.62 2.34 1.87 NI 3.54 3.76 2.91 0.90 1.31 0.68 -- -- -- -- -- mg/L 10/22/12 3.75 2.30 1.43 3.24 0.49 NI 1.13 2.67 0.05 1.89 1.41 0.66 -- -- -- -- -- mg/L 04/24/13 4.36 4.05 1.69 2.96 2.01 NI 1.35 5.44 3.93 5.97 1.31 0.63 1.19 1.72 1.14 0.95 0.93 mg/L 09/10/13 5.95 4.06 2.67 5.90 6.29 6.00 7.20 3.74 1.26 1.71 3.56 1.66 1.19 0.99 0.78 1.09 0.69 mg/L 04/23/14 8.69 8.47 0.94 11.99 4.52 6.67 2.82 9.14 5.74 3.07 2.37 2.84 1.19 3.47 0.61 0.89 4.34 mg/L 10/03/14 4.59 4.68 0.59 3.11 1.41 3.85 3.30 3.02 1.51 2.60 0.70 2.90 0.65 0.32 0.33 0.60 0.41 mg/L 04/14/15 5.52 5.71 0.80 1.78 1.30 1.99 1.92 3.77 2.65 1.71 2.13 0.50 0.41 2.02 1.22 0.96 1.86 mg/L 10/05/15 3.80 - 0.44 1.77 0.29 0.37 2.91 5.04 1.79 0.50 0.26 0.13 0.19 0.20 0.12 2.07 4.00 mg/L 04/19/16 6.18 8.48 0.54 3.70 2.26 4.04 3.17 4.90 4.19 0.50 0.26 0.18 0.51 0.29 0.31 0.25 0.30 mg/L 09/26/16 4.81 - 0.38 2.03 1.03 2.30 2.44 2.15 0.84 0.50 0.50 0.17 0.29 0.38 0.42 0.28 0.30 mg/L 03/21/17 -- -- 0.61 1.29 -- 5.47 -- 2.61 0.99 mg/L 04/25/17 3.65 1.39 0.88 2.57 1.32 0.96 1.16 6.28 7.90 3.28 0.69 0.22 1.30 3.92 6.11 4.56 2.70 mg/L 10/17/17 2.85 -- 0.39 1.11 1.04 1.16 0.50 1.54 0.520 1.27 0.19 0.70 0.25 0.19 0.84 0.37 0.61 (verification event) mg/L 12/21/17 -- -- 0.35 -- 0.48 -- -- 1.35 -- -- -- -- -- -- -- -- -- mg/L 04/16/18 3.38 -- 0.95 2.27 0.79 0.58 1.36 3.49 3.26 0.79 0.12 0.52 0.24 1.17 6.43 0.43 3.31 mg/L 10/16/18 3.55 -- 0.49 0.57 0.31 0.19 0.39 2.14 2.41 0.30 0.48 2.20 0.61 0.23 0.17 2.12 1.53 (verification event) mg/L 02/20/19 -- - -- -- 2.01 -- -- -- -- -- -- -- - 3.11 mg/L 04/09/19 3.43 3.42 5.57 1.57 1.32 0.34 1.22 4.69 2.91 1.16 0.18 0.68 0.10 0.56 016 0.09 0.52 mg/L 10/07/19 2.37 1.53 0.76 1.77 0.70 0.52 0.95 1.58 0.64 0.88 0.27 0.11 0.24 0.51 0.23 0.40 0.39 (verification event) mg/L 01/22/20 - - 2.37 - - - - - - - 0.37 - - - - - 1.86 mg/L 04/20/20 2.89 3.54 0.67 1.67 0.42 0.79 0.94 1.71 1.13 0.46 0.22 0.06 0.17 0.45 0.31 0.20 0.33 mg/L 10/13/20 2.33 2.43 0.65 0.47 0.31 0.47 1.59 1.55 4.42 0.96 0.25 0.31 0.26 0.22 0.50 1.08 2.37 m /L 04/28/21 1.58 3.38 0.46 1.83 0.71 0.26 1.69 1.81 0.44 0.46 0.10 0.19 0.22 1.98 0.36 0.32 0.28 Notes: S.U. = Standard Units NTU = Nephelometric Turbidity Units uS/cm = microsiemens per centimeter mg/L = milligramer per liter mV = Millivolts --= no data available or dry well Gd1.PEp .......= 2 of 2 August2021 TABLE 6 19131339.103 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill -Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Data Detectionanitation Qu Reporting Blanks Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Antimony ug/L 03/01/00 -- - 30 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- - 30 ND ND ND ND ND ND ug/L 03/01/01 -- - 30 ND ND ND ND ND ND ug/L 09/01/01 -- - 30 ND ND ND ND ND ND ug/L 03/01/02 -- - 30 ND ND ND ND ND ND ug/L 09/01/02 -- - 30 ND ND ND ND ND ND ug/L 04/01/03 -- - 30 ND ND ND ND ND ND ug/L 10/01/03 -- - 30 ND ND ND ND ND ND ug/L 03/01/04 -- - 30 ND ND ND ND ND ND ug/L 09/01/04 -- - 30 ND ND ND ND ND ND ug/L 05/01/05 -- - 30 ND ND ND ND ND ND ug/L 10/01/05 -- - 30 ND ND ND ND ND ND ug/L 04/01/06 -- - 30 ND ND ND ND ND ND ug/L 10/01/06 -- - 30 ND ND ND ND ND ND ug/L 04/10/07 -- - -- ND ND ND ND ND ND ug/L 09/25/07 -- - -- ND ND ND ND ND ND ug/L 05/05/08 0.68 - 6 - ND ND ND ND ND ug/L 12/04/08 0.68 - 6 - ND ND ND ND ND ug/L 04/13/09 0.68 - 6 - ND ND ND ND ND ug/L 10/20/09 0.073 - 6 0.461 B 0.185 B 0.351 B 0.346 B 0.337 B - ug/L 04/30/10 0.22 - 6 - ND 0.272 J 0.225 J 0.258 J ND ug/L 10/11/10 0.22 - 6 - 0.329 J 0.254 J 0.233 J 0.221 J ND ug/L 05/12/11 0.22 - 6 0.448 J ND 0.287 J 0.241 J 0.261 J ND ug/L 10/07/11 1.1 - 6 ND ND ND 0.287 J 0.24 J ND ug/L 04/19/12 0.22 - 6 0.279 J ND 0.34 J 0.308 J 0.284 J ND ug/L 10/26/12 0.22 - 6 ND ND ND ND ND ND ug/L 04/25/13 0.22 - 6 ND ND ND ND ND ND ug/L 09/12/13 0.22 - 6 ND 0.344 J 0.28 J ND ND ND ug/L 04/25/14 0.22 - 6 0.695 J 1.62 J 0.582 J 0.332 J 0.264 J ND ug/L 10/02/14 0.22 - 6 0.526 J ND 0.378 J 0.268 J 0.267 J ND ug/L 04/06/15 0.22 - 6 0.312 J ND 0.232 J ND 0.754 J ND ug/L 10/07/15 0.22 - 6 0.268 J ND 0.372 J 0.259 J ND ND ug/L 04/20/16 0.22 - 6 0.22 ND ND 0.424 J 0.261 J ND ug/L 09/26/16 0.22 - 6 ND ND ND ND 0.479 J ND ug/L 04/28/17 0.37 - 6 0.708 J ND 0.485 J ND ND ND ug/L 10/17/17 0.37 - 6 0.455 J ND 0.490 J ND 0.654 J ND ug/L 04/16/18 1.85 - 6 ND ND ND ND ND ND ug/L 10/18/18 1.85 5.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.74 2.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.74 2.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.74 2.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.74 2.0 -- ND ND ND ND ND ND u /L 04/29/21 0.74 2.0 ND ND ND ND ND ND Arsenic ug/L 03/01/00 -- - 10 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- - 10 ND ND ND ND ND ND Human Health = 10 ug/L ug/L 03/01/01 -- - 10 ND ND ND ND ND ND ug/L 09/01/01 -- - 10 ND ND ND ND ND ND ug/L 03/01/02 -- - 10 ND ND ND ND ND ND ug/L 09/01/02 -- - 10 ND ND ND ND ND ND ug/L 04/01/03 -- - 10 ND ND ND ND ND ND ug/L 10/01/03 -- - 10 ND ND ND ND ND ND ug/L 03/01/04 -- - 10 ND ND ND ND ND ND ug/L 09/01/04 -- - 10 ND ND ND ND ND ND ug/L 05/01/05 -- - 10 ND ND ND ND ND ND ug/L 10/01/05 -- - 10 ND ND ND ND ND ND ug/L 04/01/06 -- - 10 ND ND ND ND ND ND ug/L 10/01/06 -- - 10 ND ND ND ND ND ND ug/L 04/10/07 -- - -- ND ND ND ND ND ND ug/L 09/25/07 -- - -- ND ND ND ND ND ND ug/L 05/05/08 2 - 10 - ND 2.4 J ND 2.2 J ND ug/L 12/04/08 2.8 - 10 - ND ND ND ND ND ug/L 04/13/09 2.8 - 10 - ND ND ND ND ND ug/L 10/20/09 2.8 - 10 ND ND ND ND ND ND ug/L 04/30/10 2.8 - 10 - ND ND ND ND ND ug/L 10/11/10 2.8 - 10 - ND ND ND ND ND ug/L 05/12/11 2.8 - 10 3.04 J 3.39 J ND ND ND ug/L 10/07/11 2.8 - 10 ND ND ND ND ND ND ug/L 04/19/12 2.8 - 10 ND ND 3.12 J ND ND ND ug/L 10/26/12 2.8 - 10 ND ND ND ND 5.25 J ND ug/L 04/25/13 2.8 - 10 ND ND ND ND ND ND ug/L 09/12/13 5.4 - 10 ND ND ND ND ND ND ug/L 04/25/14 5.4 - 10 ND ND ND ND ND ND ug/L 10/02/14 5.4 - 10 6.11 J ND ND ND ND ND ug/L 04/06/15 6.8 - 10 ND ND ND ND ND ND ug/L 10/07/15 6.8 - 10 ND ND ND ND ND ND ug/L 04/20/16 6.8 - 10 ND ND ND ND ND ND ug/L 09/26/16 6.8 - 10 ND ND ND ND ND ND ug/L 04/28/17 6.8 - 10 ND ND ND ND ND ND ug/L 10/17/17 6.8 - 10 ND ND ND ND ND ND ug/L 04/16/18 6.8 - 10 ND ND ND 9.17 J ND ND ug/L 10/18/18 7.6 10 -- ND ND ND ND ND ND ug/L 04/12/19 7.6 10 -- ND ND ND ND ND ND ug/L 10/08/19 7.6 10 -- ND ND ND ND ND ND ug/L 04/20/20 7.6 10 -- ND ND ND ND ND ND ug/L 10/15/20 7.6 10 -- ND ND ND ND ND ND u /L 04/29/21 7.6 10 ND ND ND ND ND ND Barium ug/L 03/01/00 -- - 500 ND ND ND ND ND ND SW Standard ug/L 09/0,/00 -- - 500 ND ND ND ND ND ND Human Health = 200 mg/L ug/L 03/01/01 -- - 500 ND ND ND ND ND ND ug/L 09/01/01 -- - 500 ND ND ND ND ND ND ug/L 03/01/02 -- - 500 ND ND ND ND ND ND ug/L 09/0,/02 -- - 500 ND ND ND ND ND ND ug/L 04/01/03 -- - 500 ND ND ND ND ND ND ug/L 10/01/03 -- - 500 ND ND ND ND ND ND ug/L 03/01/04 -- - 500 ND ND ND ND ND ND ug/L 09/01/04 -- - 500 ND ND ND ND ND ND ug/L 05/01/05 -- - 500 ND ND ND ND ND ND ug/L 10/01/05 -- - 500 ND ND ND ND ND ND ug/L 04/01/06 -- - 500 ND ND ND ND ND ND ug/L 10/01/06 -- - 500 ND ND ND ND ND ND ug/L 04/10/07 -- - -- 41.8 J 54.8 J 21.7 J 25.4 J 25.6 J ND ug/L 09/25/07 -- - -- 74.5 J 70.9 J 16.8 J 23 J 24 J ND ug/L 05/05/08 0.2 - 100 - 51.2 B 53 B 92.5 B 65.5 B ND ug/L 12/04/08 1 - 100 - 35.9 J 21.8 J 27 J 27 J ND ug/L 04/13/09 4.2 - 100 - 53.4 J 44.8 J 41.6 J 42 J ND ug/L 10/20/09 1 - 100 68.3 J 36.3 J 21.8 J 27.2 J 26.9 J ND ug/L 04/30/10 1 - 100 - 48.5 J 30.9 J 37.1 J 44.2 J ND ug/L 10/11/10 1 - too - 47.1 J 18.8 J 29.3 J 30.6 J ND ug/L 05/12/11 1 - too 77.3 J 39.3 J 40.3 J 35.3 J 37 J ND ug/L 10/07/11 1 - 100 74.2 J 76.4 J 21.4 J 42.7 J 32.2 J ND ug/L 04/19/12 1 - too 43.7 J 48.4 J 23.5 J 33.7 J 33.7 J ND ug/L 10/26/12 1 - 100 48.2 J 51.2 J 25.2 J 34.8 J 35.1 J ND ug/L 04/25/13 1 - too 57 J 65.1 J 28.5 J 40.8 J 37.8 J ND ug/L 09/12/13 1 - 100 56.7 J 40.7 J 25.3 J 31.5 J 33.9 J ND ug/L 04/25/14 1 - too 100 60.8 J 49.3 J 52.7 J 48.8 J ND ug/L 10/02/14 1 - 100 112 45.9 J 22.3 J 24.4 J 25.1 J ND ug/L 04/06/15 1 - too 593 J 44...3 J 42...2 J 35..5 J 47..3 J ND ug/L 10/07/15 10 85.7 J 46.2 J 28.3 J 319 41 J ND ug/L 04/20/16 10 113 463 J 475 J 31 J 354 J ND0 ug/L 09/26/16 10 44.5 J 52.8 J 17.6 J 27.9 J 33.9 J ND ug/L 04/28/17 too 46 J 454 J 599 J 50.2 J 450 J ND ug/L 10/1 7/1 7 10 401 .454 J 33.6 J 55.8 J 412 J 37.8 J ND u 04/16/18 2 1 .1g/L J 43.9 J 44J ND ug/L 10/1 8/1 8 1 10 - 56.6 57.4 5.4 61.7 61.3 ND ug/L 04/12/19 10 60.9 64.6 4600 568 56.6 ND ug/L 10/08/1 11 10 55.9 49. 55.1 57.8 600 ND ug/L 04/20/29 10 41.9 4.1 44.2 42.2 40.5 ND 10/15/20 10 47.9 485 . 52.0 5.ug/L 29 ND u /L 04/29/21 10 47.5 42.5 41.6 45.0 41.8 ND Beryllium ug/L 03/01/00 -- - 2 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- - 2 ND ND ND ND ND ND Acute = 65 ug/L ug/L 03/01/01 -- - 2 ND ND ND ND ND ND Chronic=6.5 ug/L ug/L 09/01/01 -- - 2 ND ND ND ND ND ND ug/L 03/0,/02 -- - 2 ND ND ND ND ND ND ug/L 09/01/02 -- - 2 ND ND ND ND ND ND ug/L 04/01/03 -- - 2 2.4 2.4 2.3 2.3 ND ND ug/L 10/01/03 -- - 2 ND ND ND ND ND ND ug/L 03/01/04 -- - 2 ND ND ND ND ND ND ug/L 09/01/04 -- - 2 ND ND ND ND ND ND ug/L 05/01/05 -- - 2 ND ND ND ND ND ND ug/L 10/01/05 -- - 2 ND ND ND ND ND ND ug/L 04/01/06 -- - 2 ND ND ND ND ND ND ug/L 10/01/06 -- - 2 ND ND ND ND ND ND ug/L 04/10/07 -- - -- ND ND ND ND ND ND ug/L 09/25/07 -- - -- ND ND ND ND ND ND ug/L 05/05/08 0.7 - 1 - ND ND ND ND ND ug/L 12/04/08 0.1 - 1 - ND ND ND ND ND ug/L 04/13/09 0.08 - 1 - ND ND ND ND ND ug/L 10/20/09 0.1 - 1 0.113 J ND ND ND ND 0.42 J ug/L 04/30/10 0.1 - 1 - ND ND ND ND ND ug/L 10/11/10 0.1 - 1 - ND ND ND ND ND ug/L 05/12/11 0.1 - 1 ND ND ND ND ND ND ug/L 10/07/11 0.1 - 1 ND 0.149 J ND ND ND ND ug/L 04/19/12 0.1 - 1 ND ND ND ND ND ND ug/L 10/26/12 0.1 - 1 ND ND ND ND ND ND ug/L 04/25/13 0.1 - 1 ND ND ND ND ND ND ug/L 09/12/13 0.1 - 1 ND ND ND ND ND ND ug/L 04/25/14 0.1 - 1 ND ND ND ND ND ND ug/L 10/02/14 0.1 - 1 ND ND ND ND ND ND ug/L 04/06/15 0.1 - 1 ND ND ND ND ND ND ug/L 10/07/15 0.1 - 1 ND ND ND ND ND ND ug/L 04/20/16 0.1 - 1 ND ND ND ND ND ND ug/L 09/26/16 0.1 - 1 ND ND ND ND ND ND ug/L 04/28/17 0.13 - 1 ND ND ND ND ND ND ug/L 10/1 7/1 7 0.13 - 1 ND ND ND ND ND ND ug/L 04/16/18 0.13 - 1 ND ND ND ND ND ND ug/L 10/18/18 0.16 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.16 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.16 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.16 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.16 1.0 -- ND ND ND ND ND ND u /L 04/29/21 0.16 1.0 ND ND ND ND ND ND a p R 1 or 6 August2021 TABLE 6 19131339.103 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill -Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface water Monitoring Points (SW Standard) Units Dale Detection Quanitation Reporting Blanks Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Cadmium ug/L 03/01/00 -- - 1 ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- - 1 ND ND ND ND ND ND SWA 3.12 ug/L 03/01/01 -- - 1 ND ND ND ND ND ND SW-2=2.81 ug/L 09/01/01 -- - 1 1.1 ND ND ND ND ND SW-3=2.48 ug/L 03/01/02 -- - 1 ND ND ND ND ND ND SW-4-3.74 ug/L 09/0,/02 - - 1 ND 1.2 ND ND ND ND SW-5=3.17 ug/L 04/01/03 - - 1 4.1 3.8 4.0 3.9 ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 - - 1 ND ND ND ND ND ND SW-1 =0.47 ug/L 03/01/04 - - 1 1.0 ND 1.0 ND ND ND SW-2=0.43 ug/L 09/01/04 - - 1 ND ND ND ND ND ND SW-3=0.39 ug/L 05/01/OS - -- 1 ND ND ND ND ND ND SW-4=0.56 ug/L 10/01/05 - -- 1 ND ND ND ND ND ND SW-5=0.48 ug/L 04/01/06 - -- 1 ND ND ND ND ND ND ug/L 10/01/06 - -- 1 ND ND ND ND ND ND ug/L 04/10/07 - -- - ND ND ND ND ND ND ug/L 09125/07 - -- - ND ND ND ND ND ND ug/L 095 OZ08 0.5 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.36 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.09 -- 1 -- 0.14 J 0.17 J 0.26 J 0.21 J ND ug/L 10/20/09 0.36 -- 1 0.477 J ND ND ND ND ND ug/L 00430/10 0.36 -- 1 -- ND ND ND ND ND uglL 10/11/10 0.36 -- 1 -- ND ND ND ND ND u9IL 05/12111 0.36 -- 1 0.471 J ND ND ND ND ND ug/L 10%11 0.36 -- 1 ND ND ND ND ND ND u9IL 00419/12 0.36 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.36 -- 1 ND ND ND ND ND ND u9IL 04I25/13 0.36 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.36 -- 1 ND ND ND ND ND ND uglL 04/25/14 0.36 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.36 -- 1 0.661 J ND ND ND ND ND u9IL 04/06/15 0.36 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.36 - 1 0.784 J ND ND 5.66 ND ND u9IL 04/20/16 0.36 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.36 - 1 ND ND ND ND ND ND ug/L 04/28/17 0.36 -- 1 ND ND ND ND ND ND ug/L 1 0/17/1 7 0.36 - 1 ND ND ND ND ND ND ug/L 04/1 6/1 8 0.36 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.36 1.0 - ND ND ND ND ND ND ug/L 04/12/19 0.36 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.36 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.36 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.36 1.0 - ND ND ND ND ND ND 04/29/21 0.36 1.0 ND ND ND ND ND ND IChromium L 03/01/00 - -- 10 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 10 ND ND 25 14 20 ND SW Standard, Acute (ug/L) ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-1 = 643.41 ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND SW-2 - 583.72 ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND SW-3 = 517.90 ug/L 09/01/02 -- - 10 ND ND ND ND ND ND SW4 - 763.69 ug/L 04/01/03 -- - 10 ND ND ND ND ND ND SW-5=652.48 ug/L 10/01/03 -- - 10 ND ND 10 ND ND ND SW Standard, Chronic (ug/L) ug/L 03/01/04 -- - 10 ND ND ND ND ND ND SW-1=83.69 ug/L 09/01/04 -- - 10 ND ND ND ND ND ND SW-2 = 75.93 ug/L 05/01/05 -- - 10 ND ND ND ND ND ND SW-3=67.37 ug/L 10/01/05 -- - 10 ND ND ND ND ND ND SW4=99.34 ug/L 04/01/06 -- - 10 ND ND ND ND ND ND SW-5=84.87 ug/L 10/01/06 -- - 10 ND ND ND ND ND ND ug/L 04/10/07 -- - -- ND ND ND ND ND ND ug/L 09/25/07 -- - -- ND ND ND ND ND ND ug/L 05/05/08 2 - 10 - ND ND 15.0 ND ND ug/L 12/04/08 1 - 10 - ND 2.3 J ND 1.40 J ND ug/L 04/13/09 0.7 - 10 - 1.40 J 1.60 J 1.10 J 1.10 J ND ug/L 10/20/09 1 - 10 8.16 J ND ND ND ND ND ug/L 04/30/10 1 - 10 - ND 1.14 J ND 1.95 J ND ug/L 10/11/10 1 - 10 - 2.52 J 1.00 1.00 1.00 ND ug/L 05/12/11 1 - 10 4.37 J ND 1.09 J ND ND ND ug/L 10/07/1, 1 - 10 6.97 J 6.25 J 1.21 J 3.00 J ND ND ug/L 04/19/12 1 - 10 1.11 J ND ND ND ND ND ug/L 10/26/12 1 - 10 ND ND ND ND ND ND ug/L 04/25/13 1.4 - 10 1.44 J 2.12 J ND ND 2." J ND ug/L 09/12/13 1.4 - 10 ND ND ND ND ND ND ug/L 04/25/14 1.4 - 10 11.7 ND 4.26 J 1.7 J ND ND ug/L 10/02/14 1.4 - 10 20.6 B 2.13 B 13.4 B 2.50 B 2.70 B - ug/L 04/06/15 1.4 - 10 3.66 J ND 3.36 J ND 3.51 J ND ug/L 10/07/15 1.4 - 10 7.93 J ND ND 66.1 ND ND ug/L 04/20/16 1.4 - 10 14.6 ND 6.73 J ND ND ND ug/L 09/26/16 1.4 - 10 ND ND ND ND ND ND ug/L 04/28/17 1.4 - 10 ND ND 5.88 J 1.43 J ND ND ug/L 10/1 7/1 7 1.4 - 10 ND ND 3.94 J ND ND ND ug/L 04/1 6/1 8 1.4 - 10 1.74 J ND 1.80 J ND 1.92 J ND ug/L 10/1 8/1 8 1.4 10 -- ND ND ND ND ND ND ug/L 04/12/19 1.4 10 - 1.93 J 1.77 J ND ND 2.09 J ND ug/L 10/08/19 1.4 10 - 1.83 J ND ND ND ND ND ug/L 04/20/20 1.4 10 - 1.65 J ND 1.70 J ND ND ND ug/L 10/15/20 1.4 10 -- 3.09 J 1.64 J 2.85 J 2.29 J 2.22 J ND ug/L 04/29/21 1.4 10 2.29 J ND ND ND ND ND Cobalt ug/L 03/01/00 - - 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 - -- 10 ND ND ND ND ND ND ug/L 03/01/01 - -- 10 ND ND ND ND ND ND ug/L 09/01/01 - -- 10 ND ND ND ND ND ND ug/L 03/01/02 - -- 10 ND ND ND ND ND ND ug/L 09/01/02 - -- 10 ND 17 ND ND ND ND ug/L 04/01/03 - -- 10 14 14 15 14 ND ND ugI 10/01/03 - -- 10 ND ND ND ND ND ND ug/L 03/01/04 - -- 10 ND ND ND ND ND ND ug/L 09/01/04 - -- 10 ND ND ND ND ND ND ug/L 05/01/05 - -- 10 ND ND ND ND ND ND ug/L 10/01/05 - -- 10 ND ND ND ND ND ND ug/L 04/01/06 - -- 10 ND ND ND ND ND ND ug/L 10;01/0 - -- 10 ND ND ND ND ND ND uglL 04/10/07 - -- - ND ND ND ND ND ND ug/L 09/25/07 - -- - 3.5 J ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND 7.1 J 3.8 J ND ug/L 12/04/08 1.1 - 10 -- ND ND ND 2.9 J ND u9IL 04/13/09 0.6 - 10 -- 1.8 J 0.7 J 0.8 J 0.6 J ND ug/L 10/20/09 1.1 - 10 3.43 J ND ND ND ND ND ug/L 04/30/10 1.1 -- 10 -- ND ND ND 1.98 J ND ug/L '0110/10 1.1 -- 10 -- ND ND ND ND ND W/L 05/1211 1.1 -- 10 3.19 J ND ND ND ND ND u9IL 10.11,1 1.1 -- 10 4.06 J 6.5 J 1.19 J 2.28 J ND ND ug/L 04/19/12 1.1 -- 10 ND ND ND ND ND ND ug/L 10/26/12 1.1 10 ND ND ND ND ND ND ug/L 04/25/13 10 ND 2.03 J ND ND ND ND ug/L 09/12/13 1.1 10 ND ND 1.46 J 1.15 J ND ND ug/L 04/25/14 10 431 J ND 91 J ND ND ND ug/L 10/02/14 .1 10 8.95 J ND 4.6 J 246 .6 J 245 J ND ug/ 04/06/15 1 10 1.73 J ND 244 J 15L J 2.1J ND ug/L 10/07/15 10 4.34 J ND 2.43 J 46.5 1.92 J ND ug/L 04/20/16 1 10 7.38 J ND 4.32 J 1.66 J 2.1 J ND ug/L 09/26/16 1.1 - 10 ND 1.30 J ND ND ND ND ug/L 04/28/17 1.1 - 10 ND ND 2.31 J ND ND ND ug/L 10/1 7/1 7 1.1 - 10 ND ND 2.94 J ND ND ND ug/L 04/1 6/1 8 1.1 - 10 1.65 J 1.49 J ND 1.30 J 1.32 J ND ug/L 10/18/18 1.4 10 -- ND ND ND ND ND ND ug/L 04/12/19 1.4 10 -- ND 1.40 J ND ND ND ND ug/L 10/08/19 1.4 10 -- ND ND ND ND ND ND ug/L 04/20/20 1.4 10 -- ND ND ND ND ND ND ug/L 10/15/20 1.4 10 -- ND ND ND ND ND ND u /L 04/29/21 1.4 10 ND ND ND ND ND ND Copper ug/L 03/01/00 -- -- 200 ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 200 ND ND ND ND ND ND S1 = 15.46 ug/L 03/01/01 -- -- 200 ND ND ND ND ND ND SW-W-2=13.82 ug/L 09/01/01 - -- 200 ND ND ND ND ND ND SW-3=12.04 ug/L 03/01/02 - -- 200 ND ND ND ND ND ND SW-4=18.82 ug/L 09/01/02 - -- 200 ND ND ND ND ND ND SW-5=15.71 ug/L 04/01/03 - -- 200 ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 - -- 200 ND ND ND ND ND ND SW-1 = 10.17 ug/L 03/01/04 - -- 200 ND ND ND ND ND ND SW-2=9.18 ug/L 09/01/04 - -- 200 ND ND ND ND ND ND SW-3=8.11 ug/L 05/01/05 - -- 200 ND ND ND ND ND ND SW-4=12.16 ug/L to/01/05 - -- 200 ND ND ND ND ND ND SW-5=10.32 ug/L 04/01/06 - - 200 ND ND ND ND ND ND ug/L 10/01/06 200 ND ND ND ND ND ND ug/L 0410/07 -- 2.2 J 1.50 J 6.20 J 450 J 4.30 J ND ug/L 09//25/07 - 11.2 0 10.3 8.40 J 10.1 ND ug/L OS/O8 . 06 10 1.6 3 J 2.50 J 13.3 3.7 J ND 12/04/0 10 20.5 460 J 43 64J NDug/L ug/L 04/13/09 0.81 10 - 193 J 2.56 J 1.87 J 1.70 J ND ug/L 10/20/09 1.6 - 10 10.7 ND 7.1 J 5.15 J 5.26 J ND ug/L 04/30/10 10 ND 5.90 J 3.30 J 6.33 J ND ug/L 10/11/10 1....6 10 1....0.2 8....12 J 5.59 J 3......91 J ND ug/L 05/12/1 16 10 12. ND 3.3J 28 J 3.0J ND1 10/07/1 16 10 8.31 J 5.88 J 4.91 J 6.56 J 23 3 NDug/L ug/L 04/1912 16 - 10 272 J ND 5.01 J 4.36 J 4.1J ND ug/L 10/26/2 1.6 10 2.04 J ND 54J 2.22 J 2.71 J ND ug/L 04/25/13 1.6 - 10 3.43 J 5.01 J 4.46 J 4.33 J 6.16 J ND ug/L 09/1 2/1 3 1.6 10 .-. 194 J ND 167 J ND ND N ug/L 04/25/14 1.6 - 10 167 346 B 10.5 B 592 B 629 B - ug/L 10/02/14 1.6 10 30 1.82 J 682 J 5.42 J 5.30 J ND u 01 1 - 10 4 3171 J it.1 5.23 J 824 J ND ug/L 14/O6/15 0/075 16 6 10 11.3 6 2.65 J 57.1 21J ND ug/L 04/20/16 16 0 21.2 ND 10.8 . 206 J 407 J ND ug/ 09/2 0 452 .9 J 257 J�6.6 3 80 ND ug/L 04/28/17 1.6 10 51 J 1 2 J 13A 455 J 451 J ND ug/L 1 /i1 1 10 3.95 J 1.77 J 907 J 2.58 J 28 ND ug/L 046/8 16 6 -- 10 44 J 1 49 J 1 4.1 J 5.33 J ND ug/L 101818 1.6 10 - 3.11 J 384 J 272 J 2.42 J 3.55 J ND ug/L 04/12/19 16 10 344 J 544 J 111 J 3.66 J 418 J ND ug/L 10;08/19 16 10 123 J 181 J 292 J 2.66 J 1.6J ND ug/L 0420/20 1.6 10 4.72 J ND 4.85 J 6.44 J 4.63 J ND ug/ 1I 0/221 1.6 10 43 J 4.03 J 4.3 J 3 49 520 J 4N2J ND /L 1 10 ND ND ND D NDu August2021 TABLE 6 19131339.103 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill -Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface water Monitoring Points (SW Standard) Units Date Detection Quanitation Reporting Blanks Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Lead ug/L 03/01/00 -- - 10 NO NO 15 NO NO NO SW Standard, Acute (ug/L) ug/L 09/01/00 -- - 10 NO NO 10 NO NO NO SWA=75.88 ug/L 03/01/01 -- - 10 NO NO NO NO NO NO SW-2-66.69 ug/L 09/01/01 -- - 10 25 NO NO NO NO NO SW-3=56.87 ug/L 03/0,/02 -- - 10 NO NO NO NO NO NO SW-4-95.12 ug/L 09/0,/02 - - 10 NO 86 NO NO NO NO SW-5=77.30 ug/L 04/0,103 - -- 10 NO ND NO NO NO NO SW Standard, Chronic (ug/L) ug/L 10/01/03 - -- 10 NO NO NO NO NO NO SW1 =2.96 u91L 03/01/04 - -- 10 NO NO NO NO NO NO Z2=2.60 ug/L 09/01/04 - -- 10 NO NO NO NO NO NO SW-3=2.22 ug/L 05/01/05 - -- 10 NO NO NO NO NO NO SW-4=3.71 ug/L 10/01/05 - -- 10 NO NO NO NO NO NO SW-5=3.01 ug/L 04/01/05 - -- 10 NO NO NO NO NO NO ug/L 10/01/06 - -- 10 NO NO NO NO NO NO ug/L 04/10/07 - -- - NO NO NO NO NO NO ug/L 09/25/07 - -- - 11.2 NO NO NO NO NO uglL 05/05/108 2 -- 10 -- NO NO 14.8 NO NO ug/L 12/04/01 1.9 -- 10 -- NO NO NO NO NO ug/L 04I13109 1.6 -- 10 -- 2.30 J 2.50 J 1.60 1.60 NO ug/L 10/20/09 1.9 -- 10 8.94 J NO NO 2.44 J 3.34 J NO uglL 04I30/10 1.9 -- 10 -- NO NO NO 2.04 J NO ug/L 10/11/10 1.9 -- 10 -- 5.45 J 1.90 1.90 1.90 NO uglL 05/12/11 1.9 -- 10 15.4 NO 2.00 J NO NO NO ug/L 10/07/11 1.9 - 10 10.0 16.4 NO 3.33 J NO NO ug/L 04/19/12 1.9 -- 10 ND NO 2.38 J NO NO NO ug/L 10/26/12 1.9 - 10 NO NO NO NO NO NO ug/L 04/25/13 1.9 -- 10 NO 4.74 J NO NO NO NO ug/L 09/12/13 2.1 -- 10 NO NO NO NO NO NO ug/L 04/25/14 2.1 - 10 11.2 3.23 J 3.36 J 2.23 J 2.82 J NO ug/L 10/02/14 2.1 - 10 NO NO NO NO NO NO ug/L 04/06/15 3.1 - 10 NO NO NO NO NO NO ug/L 10/07/15 3.1 - 10 7.02 J NO NO 93.2 NO NO ug/L 04/20/16 3.1 - 10 14.6 NO 6.10 J NO NO NO ug/L 09/26/16 3.1 - 10 ND NO NO NO NO NO ug/L 04/28/17 3.1 - 10 NO NO 4.66 J NO NO NO ug/L 10/17/17 3.1 - 10 NO NO 3.18 J NO NO NO ug/L 04/16/18 3.1 - 10 NO NO NO NO NO NO ug/L 10/18/18 3.1 10 -- NO NO NO NO NO NO ug/L 04/12/19 3.1 10 -- 3.91 J NO NO NO NO NO ug/L 10/08/19 3.1 10 -- NO NO NO NO NO NO ug/L 04/20/20 3.1 10 -- NO NO NO NO NO NO ug/L 10/15/20 3.1 10 -- NO NO NO NO NO NO ug/L 04/29/21 3.1 10 NO NO NO NO NO NO Nickel ug/L 03/01/00 -- - 50 NO NO NO NO NO NO SW Standard, Acute (ug/L) ug/L 0.1/00 -- - 50 NO NO 82 65 81 NO SW-1=530.88 ug/L 03/01/01 -- - 50 NO NO NO NO NO NO SW-2=480.09 ug/L 09/01/01 -- - 50 NO NO NO NO NO NO SW-3=424.28 ug/L 03/01/02 -- - 50 NO NO NO NO NO NO SW-4=633.69 ug/L 09/01/02 -- - 50 NO NO NO NO NO NO SW-5=538.61 ug/L 04/01/03 -- - 50 NO NO NO NO NO NO SW Standard, Chronic (ug/L) ug/L 10/01/03 -- - 50 NO NO NO NO NO NO SW-1=58.96 ug/L 03/01/04 - - 50 NO NO NO NO NO NO SW-2=53.32 ug/L 09/01/04 - - 50 NO NO NO NO NO NO SW-3=47.12 ug/L 05/01/05 - - 50 NO NO NO NO NO NO SW-4=70.38 ug/L 10/01/0 - -- 50 NO NO NO NO NO NO SW-5=59.82 ug/L 04/01/O6 - -- 50 NO NO NO NO NO NO uglL 10/01/0 - -- 50 NO NO NO NO NO NO ug/L 04/10/067 - -- - NO NO 2.7 J NO 2.5 J NO ug1 09/25% - -- - NO NO 7.6 J NO NO NO ug/L 05/05/08 2.0 -- 50 -- 3.5 J 3.9 J 5.5 J 6.7 J NO uglL 12I04I08 1.8 -- 50 -- NO 4.3 J 3.8 J 3.2 J NO ug/L 04/13/09 0.6 -- 50 -- 2.3 J 1.5 J 1.6 J 1.5 J NO uglL 10I20I09 1.8 -- 50 2.94 J NO 2.53 J 1.89 J NO NO ug/L 04/30/10 1.8 -- 50 -- NO NO NO 2.14 J NO uglL 10111/10 1.8 -- 50 -- 1.80 2.22 J 1.80 1.80 NO ug/L 005 2111 1.8 -- 50 2.34 J ND ND 2.57 J 2.66 J NO uglL 10I07111 1.8 -- 50 3.64 J 4.23 J 6.40 J 4.31 J 3.43 J NO ug/L 04%112 1.8 -- 50 NO NO 2.56 J 2.00 J 2.23 J NO uglL 10/26/12 1.8 -- 50 ND 1.92 J 5.32 J 5.14 J 5.46 J NO ug/L 04/25/13 1.8 - 50 2.38 J 3.30 J 6.20 J 6.96 J 6.85 J NO ug/L 09/12/13 1.8 - 50 NO NO 2.09 J NO NO NO ug/L 04/25/14 1.8 - 50 4.30 J 2.07 J 7.49 J 5.52 J 5.55 J NO ug/L 10/02/14 1.8 - 50 7.25 J NO 23.7 J 9.96 J 10.6 J NO ug/L 04/06/15 1.8 - 50 2.02 J NO 3.03 J 2.33 J 2.46 J NO ug/L 10/07/15 1.8 - 50 3.16 J NO 6.56 J 22.0 J 3.14 J NO ug/L 04/20/16 2.2 - 50 5.66 J NO 5.02 J 8.54 J 2.88 J NO ug/L 09/26/16 2.2 - 50 ND NO 3.54 J 3.34 J 6.44 J NO ug/L 04/28/17 2.2 - 50 NO NO 6.02 J 2.83 J 2.62 J NO ug/L 10/17/17 2.2 - 50 NO NO NO NO NO NO ug/L 04/16/18 2.2 - 50 NO NO NO NO NO NO ug/L 10/18/18 2.2 10 -- NO NO NO NO NO NO ug/L 04/12/19 2.2 10 -- NO NO NO NO NO NO ug/L 10/08/19 2.2 10 -- NO NO NO NO 2.40 J NO ug/L 04/20/20 2.2 10 -- 36.8 NO 3.71 J NO NO NO ug/L 10/15/20 2.2 10 -- NO NO 3.50 J NO NO NO ug/L 04/29/21 2.2 10 NO NO NO NO NO NO Selenium ug/L 03/01/00 -- - 20 NO NO NO NO NO NO SW Standards ug/L 09/01/00 -- - 20 NO NO NO NO NO NO Acute =5 ug/L ug/L 03/01/01 -- - 20 NO NO NO NO NO NO Chronic ug/L ug/L 09/01/01 - - 20 NO NO NO NO NO NO ug/L 03/01/02 - - 20 NO NO NO NO NO NO ug/L 09/01/02 - - 20 NO NO NO NO NO NO ug/L 04/01/03 - - 20 NO NO NO NO NO NO ug/L 10/01/03 - - 20 NO NO NO NO NO NO ug/L 03/01/04 - - 20 NO NO NO NO NO NO ug/L 09/01/04 - -- 20 NO NO NO NO NO NO ug/L 05/01/05 - -- 20 NO NO NO NO NO NO ug/L 10/01/05 - -- 20 NO NO NO NO NO NO ug/L 04/01/06 - -- 20 NO NO NO NO NO NO ug/L 10/01/06 - -- 20 NO NO NO NO NO NO ug/L 04/10/07 - -- - NO NO NO NO 2.9 J NO ug/L 09/25/07 - -- - NO NO NO NO NO NO ug/L 05/05/08 2 -- 10 -- NO NO NO NO NO ug/L 12/04/08 2.7 -- 10 -- NO NO NO NO NO ug/L 04/13/09 3.4 -- 10 -- NO NO NO NO NO ug/L 10I20/09 2.7 -- 10 NO NO NO NO NO NO ug/L 04/30I10 0.83 -- 10 -- 1.72 J 0.9 J 0.974 J 1.23 J NO ug/L 10/11/10 0.83 -- 10 -- 0.83 0.83 0.83 0.875 J NO ug/L 0Z12111 0.83 -- 10 NO NO NO 1.16 J 0.926 J NO ug/L 10%11 4.15 -- 10 NO NO NO 1.03 J 1.16 J NO ug/L 04/19112 0.83 -- 10 NO NO NO NO NO NO ug/L 10/26/12 0.83 -- 10 NO NO NO NO NO NO ug/L 04I25/13 0.83 -- 10 NO NO NO NO NO NO ug/L 09/12/13 0.91 -- 10 NO NO NO NO NO NO ug/L 04/25/14 0.91 -- 10 NO NO NO NO NO NO ug/L 10/02/14 0.91 -- 10 NO NO NO NO NO NO ug/L 04/06/15 0.91 - 10 NO NO NO NO NO NO ug/L 10/07/15 0.91 - 10 NO NO NO NO NO NO ug/L 04/20/16 0.91 - 10 NO NO NO NO NO NO ug/L 09/26/16 0.91 - 10 NO NO NO NO NO NO ug/L 04/28/17 6.2 -- 10 NO NO NO NO ND NO ug/L 10/17/17 6.2 -- 10 NO NO NO NO NO NO ug/L 04/16/18 6.2 - 10 NO NO NO NO NO NO ug/L 10/18/18 6.2 10 -- NO NO NO NO NO NO ug/L 04/12/19 6.2 10 -- NO NO NO NO NO NO ug/L 10/08/19 6.2 10 -- NO NO NO NO NO NO ug/L 04/20/20 6.2 10 -- NO NO NO NO NO NO ug/L 10/15/20 6.2 10 -- NO NO NO NO NO NO ug/L 04/29/21 1 6.2 10 NO NO NO NO NO NO Silver ug/L 03/01/00 -- - 10 NO NO NO NO NO NO SW Standard, Acute (ug/L) ug/L 09/01/00 -- - 10 NO NO NO NO NO NO SW-1 =4.15 ug/L 03/01/01 -- - 10 NO NO NO NO NO NO SW-2=3.38 ug/L 09/01/01 -- - 10 NO NO NO NO NO NO SW-3=2.63 ug/L 03/01/02 -- - 10 NO NO NO NO NO NO SW-4=5.95 ug/L 09/01/02 -- - 10 NO NO NO NO NO NO SW-5=4.28 ug/L 04/01/03 -- - 10 NO NO NO NO NO NO SW Standard, Chronic (ug/L) ug/L 10/01/03 -- - 10 NO NO NO NO NO NO SW-1=0.06 ug/L 03/01/04 -- - 10 NO NO NO NO NO NO SW-2=0.06 ug/L 09/01/04 -- - 10 NO NO NO NO NO NO SW-3=0.06 ug/L 05/01/05 - - 10 NO NO NO NO NO NO SW-4=0.06 ug/L 10/01/05 - - 10 NO NO NO NO NO NO SW-5=0.06 ug/L 04/01/06 - - 10 NO NO NO NO NO NO ug/L 10/01/06 - - 10 NO NO NO NO NO NO ug/L 04/10/07 - - - NO NO NO NO NO NO ug/L 09/25/07 - - - NO NO NO NO NO NO ug/L 05/05/08 2 -- 10 -- NO 2.20 J NO 2.40 J NO ug/L 12/0410" 1.9 -- 10 -- NO NO NO 2.80 J ND ug/L 04/13/09 1.0 -- 10 -- NO NO NO NO NO ug/L 10/20/09 1.9 -- 10 NO NO NO NO NO NO ug/L 04/30/10 1.9 -- 10 -- 2.22 J NO NO NO NO ug/L 10/11/10 1.9 -- 10 -- NO NO NO NO NO ug/L 05/12/11 1.9 -- 10 NO NO NO NO NO NO ug/L 10/07/11 1.9 -- 10 NO NO NO NO NO NO ug/L 04/19/12 1.9 -- 10 NO NO NO NO NO NO ug/L 10/26/12 1.9 -- 10 NO NO NO NO NO NO ug/L 04/25/13 1.9 -- 10 2.06 J NO 1.95 J 2.29 J 2.31 J NO ug/L 09%/13 1.9 -- 10 NO NO NO NO NO NO ug/L 04/25/14 1.9 -- 10 NO NO NO NO NO NO ug/L 10/02/14 1.9 -- 10 NO NO NO NO NO NO ug/L 04/06/15 1.9 -- 10 NO NO NO NO NO NO ug/L 10/07/15 1.9 -- 10 NO NO 2.74 NO 2.32 J NO uglL 04/20/16 1.9 -- 10 NO NO NO NO NO NO ug/L 09126/16 1.9 -- 10 NO NO NO NO NO NO ug/L 04/28/17 1.9 - 10 NO NO NO NO NO NO ug/L 10/17/17 1.9 - 10 NO NO NO NO NO NO ug/L 04/16/18 1.9 - 10 NO NO NO NO NO NO ug/L 10/1 8/1 8 1.9 10 -- NO NO NO NO NO NO ug/L 04/121,9 1.9 10 -- NO NO NO NO NO NO ug/L 10/08/19 1.9 10 -- NO NO NO NO NO NO ug/L 04/20/20 1.9 10 -- NO NO NO NO NO NO ug/L 10/15/20 1.9 10 -- NO NO NO NO NO NO ug/L 04/29/21 1.9 10 NO NO NO NO NO NO August2021 TABLE 6 19131339.103 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill -Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface water Monitoring Points (SW Standard) Units Dale Detection Quanitation Reporting Blanks Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Thallium ug/L 03/01/00 -- - 10 NO NO NO ND NO NO No SW Standard ug/L 09/01/00 -- - 10 NO NO NO NO NO NO ug/L 03/01/01 -- - 10 NO NO ND ND NO NO ug/L 09/01/01 -- - 10 ND ND ND ND 12 ND ug/L 03/0,/02 -- - 10 ND ND ND ND NO NO ug/L 09/0,/02 -- - 10 ND ND ND ND NO ND ug/L 04/0,/03 -- - 10 ND ND ND ND ND ND ug/L 10/01/03 - - 10 ND ND ND ND NO ND ug/L 03/01/04 - - 10 ND ND ND ND ND ND ug/L 09/01/04 - - 10 ND ND ND ND NO ND ug/L 05/01/05 - - 10 ND ND ND ND ND ND ug/L 10/01/05 - -- 10 ND ND ND ND ND ND ug/L 04/01/06 - -- 10 ND ND ND ND ND ND ug/L 10/01/06 - -- 10 ND ND ND ND ND ND ug/L 04/10/07 - -- - ND ND ND ND ND ND ug/L 09/25/07 - -- - 0.053 J 0.05 J 0.045 J 0.055 J 0.054 J ND ug/L 05/05/08 0.036 -- 5.5 -- ND ND ND ND ND ug/L 12/04/0 0.036 -- 5.5 -- NO NO NO NO ND ug/L 04/13/09 0.036 -- 5.5 -- ND ND ND ND ND ug/L 10I20/09 0.11 -- 5.5 0.11 0.11 0.11 0.11 0.11 ND u9/L 04/30/10 0.11 -- 5.5 -- ND ND ND ND ND ug/L 10/11/10 0.11 -- 5.5 -- NO NO NO NO ND ug/L 05/12;11 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/07/11 0.55 -- 5.5 NO NO NO ND NO ND ug/L 04119/12 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/26/12 0.11 -- 5.5 NO NO NO ND NO ND ug/L 04/25/13 0.11 -- 5.5 ND ND ND ND ND ND ug/L 09/12113 0.11 -- 5.5 NO NO NO ND NO ND ug/L 04/25114 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/0214 0.11 -- 5.5 NO NO NO NO NO NO ug/L 04/06;15 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/07/15 0.11 -- 5.5 NO NO NO NO NO NO ug/L 04/201116 0. 5..5 ND ND ug/L 091266 0.11 55 0ND 0 J 0ND 24 J 0ND 205 J 0ND J 0316 J NO uglL 12 04817 0.11 55 0.39 J 0.267 J 0.261 0.8 27 J 0.205 NO ug/L 10/17/17 0.11 -- 5.5 0819 2J NO ug/L 0411i6/18 011 5.5 ND ND ND ND ND ND ug/L 108/18 0.55 5.0 - NO NO NO NO NO NO ug/L 04112119 0.22 2.0 - ND ND ND ND ND ND ug/L 10/08/19 0.22 2.0 - NO NO NO NO NO NO ug/L 04/20/20 0.22 2.0 - NO NO ND ND ND ND ug/L 10/15/20 0.22 2.0 - NO NO NO NO NO NO ug/L 04129121 0.22 2.0 ND ND ND ND ND ND Vanadium ug/L 03/01/00 - -- 40 NO NO NO NO NO NO NO SW Standard uglL 09I01I00 - -- 40 ND NO NO NO NO NO ug/L 03/01/01 - -- 40 NO NO NO NO NO NO uglL 09I01I01 - -- 40 ND NO ND ND ND ND ug/L 03/01/02 - -- 40 NO NO NO NO NO NO uglL 09/01/02 - -- 40 ND 44 NO NO ND ND ug/L 04/01/03 - -- 40 NO NO NO NO NO NO uglL 10I01/03 - -- 40 NO NO ND ND ND ND ug/L 03/01/04 - - 40 NO NO ND ND ND ND uglL 09I01/04 - - 40 NO NO NO NO NO NO ug/L 05/01/05 - - 40 NO NO NO NO NO NO ug/L 10/0,/05 - - 40 NO NO NO NO NO NO ug/L 04/01/06 - - 40 NO NO NO NO NO NO ug/L 10/0,/06 - - 40 NO NO NO NO NO NO ug/L 04/10/07 -- - -- NO NO NO NO NO NO ug/L 09/25/07 -- - -- 7.1 J NO NO 1.5 J 1.2 J NO ug/L 05/05/08 1 - 25 - NO NO 9.3 J 2.4 J NO ug/L 12/04/08 1.4 - 25 - NO NO NO 2.5 J NO ug/L 04/13/09 0....7 25 -. 4.2 J 2...1 J 2.5 J 2.6 J NO ug/L 10/20/09 14 25 0. 2.19 J 181 J 2.79 J 1.8J NO ug/L 04/30/1 1.4 25 - NO NO NO 346 J NO ug/L 10/11/10 2 J NO ug/L 05/12/11 1.4 25 8.52 J 1.90 J 2.35 J 2.27 J 242 J NO ug/L 10/07/1, 14 25 119 J 21.0 J 227 J 6.55 J 1.66 J NO ug/L 04/19/12 1.4 25 2.33 J NO 1.48 J 1.60 J 1.44 J NO ug/L 10/26/12 14 25 NO NO N....D N......D N....D NO ug/L 04/25/13 1.4 25 2.31 J 5.99 J NO NO NO NO ug/L 09/12/13 14 .. 25 2.1.1 J NO 1.70 J 1.53 J ND NO ug/L 04/2 1. 2 179 J ND 4.7 J 2.25 J 1.60 J ND ug/L 10/0214 14 4 25 ND 3.14 J 266 J 226 J ND ug/L 04/06/15 14 25 2.34 J ND 333 J ND 4.62 J ND ug/L 10/07/15 1.4 25 18.2 J 2.91 J 369 J 61.8 3.05 J ND ug/L 04/20/16 1.4 25 26.9 ND 1 2. 0 J 2.13 J 304 J ND ug/L 09/26/16 1.4 25 1.95 J ND ND 164 J 45J ND ug/L 04/28/17 1.4 25 2.61 J 1.66 J 836 J 235 J 236 J ND ug/L 10/17117 1.4 25 2.42 J ND 7.92 J 342 J 288 J ND ug/L 04/1618 1.4 -- 25 233 J 214 J 2.45 J 294 J 367 J ND ug/L 10/1818 1.4 10 - 1.88 J 2.26 J 1.5J 161 J 1.7J ND ug/L 04/12119 1.4 10 1.54 J 4.16 J 231 J 1.78 J 2.00 J ND ug/L 10I08/19 1.4 10 245 J ND 2.33 J 1.96 J 1.7J ND ug/L 042020 14 10 175 J NO 2.28 J 2.49 J 1.1185 J ND ug/L 10/15/20 1.4 10 ND ND ND ND ND ND u /L 04/29/21 1.4 10 NO NO NO NO NO ND Zinc ug/L 03I01/00 - -- 50 ND ND 31 58 68 ND SW Standard, Acute (ug/L) ug/L 09/01too - -- 50 NO NO 50 60 NO SW-1 = 132.88 uglL 03/01/01 - -- 50 ND ND 68 ND 56 ND SW-2=120.15 ug/L 09/01/01 - -- 50 120 ND 60 NO 50 NO SW-3=106.16 ug/L 03I01/02 - -- 50 ND ND 70 50 60 ND SW-4=158.66 ug/L 09/01/02 - -- 50 NO 1so 80 NO NO NO SW-5=134.82 uglL 04;01/03 - -- 50 ND ND ND ND 50 ND SW Standard, Chronic (ug/L) ug/L 10/01/03 - -- 50 NO ND 120 50 50 NO SW-1 = 133.97 uglL 03/101/04 - - 50 NO NO 52 ND ND ND SW-2=121.14 ug/L 09/01/04 - - 50 58 NO 56 NO 59 NO SW-3=10103 ug/L 05/01/05 - - 50 NO NO ND NO NO NO SW-4 = 159.96 ug/L 10/01/05 - - 50 NO NO NO NO NO NO SW-5=135.92 %L 04/01/0 - -- 50 NO NO 51.6 NO NO NO ug/L 10/0,/06 - -- 50 NO NO 60.9 NO NO NO ug/L 04/10/07 - - -- 7.6 J 23.5 48.4 38.2 39.5 NO ug/L 09/25/07 -- - -- 84.9 11.4 60.4 36.4 45.7 NO ug/L 05/05/08 1.0 - 10 - 5.8 J 6.4 J 154 20.4 NO ug/L 12/04/08 3.8 - 10 - 22.4 47.9 35.3 34.6 NO ug/L 04/13/09 3.4 - 10 - 24.9 21.4 25.8 27.2 NO ug/L 10/20/09 3.8 - 10 70.0 7.62 J 45.2 30.9 33.2 NO ug/L 04/30/10 3.8 - 10 - 6.64 J 48.1 34.0 54.2 NO ug/L 10/11/10 3.8 - 10 - 32.0 30.1 22.8 22.9 NO ug/L 05/12/11 3.8 - 10 76.2 10.1 33.5 27.7 36.9 NO ug/L 10/07/11 3.8 - 10 102 62.1 45.0 60.5 32.1 NO ug/L 04/19/12 3.8 - 10 5.98 J NO 32.0 21.6 22.9 NO ug/L 10/26/12 3.8 - 10 12.3 5.81 J 25.3 20.3 22.0 NO ug/L 04/25/13 3.8 - 10 15.0 25.8 42.6 31.6 33.1 NO ug/L 09/12/13 3.8 - 10 9.73 J NO 29.8 14.9 17.1 NO ug/L 04/25/14 3.8 - 10 66.3 7.92 J 63.3 37.2 33.7 NO ug/L 10/02/14 3.8 - 10 144 3.94 J 63.6 34.9 34.0 NO ug/L 04/06/15 3.8 - 10 16.4 5.33 J 57.3 30.0 51.6 NO ug/L 10/07/15 3.8 - 10 117 7.88 J 25.2 1020 24.5 NO ug/L 04/20/16 44 10 111 NO 95.5 31.5 44.7 NO ug/L 09/26/16 44 10 5.08 J 521 J 20 164 27.7 NO ug/L 04/28/17 4.4 10 11.0 6.98 J 648 21.1 20.1 NO ug/L 10/17/17 4.4 10 8.83 J NO 32.5 5.72 J NO NO ug/L 04/16/18 44 - 10 11 10 10.3 163 157 NO ug/ 10/18/18 4.4 10 - 1. 29 1. 22 1.L 18 17.5 18.4 NO ug/L 04/12/19 4.4 10 11.6 16.2 13.9 1 2. 1 15.6 NO ug/L 10/08/19 4.4 10 7.17 J NO 6.31 J 6.76 J 7.48 J NO ug/L 04/20/20 4.4 10 27.1 NO 13.6 133 101 NO ug/L 10/15/20 4.4 10 64 NO 45 10.3 11.7 NO /L 04/29/21 10 6.18 J NO 4.48 J .9u 58 J 6.52 J NO Acetone ug/L 03/01/00 -- - 100 ND NO NO NO NO - SWStandard =2000 ug/L ug/L 09/01/00 -- - too ND NO NO NO NO NO ug/L 03/01/01 -- - 100 ND ND ND ND ND NO ug/L 09/01/01 -- - 100 NO ND ND NO ND ND ug/L 03/01/02 - - 100 ND ND ND ND ND ND ug/L 09/01/02 - - 100 ND ND ND ND ND ND ug/L 04/01/03 - - 100 ND ND ND ND ND ND ug/L 10/01/03 - -- 100 ND ND ND ND ND ND ug/L 03/01/04 - -- 100 ND ND ND ND ND ND ug/L 09/01/04 - -- 100 ND ND ND ND ND ND ug/L 05/01/05 - -- 100 ND ND ND ND ND ND ug/L 10/01/05 - -- 100 ND ND ND ND ND ND ug/L 04/01/06 - -- 100 NO NO ND ND ND ND ug/L 10/01/06 - -- 100 ND ND ND ND ND ND ug/L 04/10/07 - -- - NO NO ND ND NO NO ug/L 09/25/07 - -- - ND 5.3 J 68 J 1.7 J 6.3 J ND ug/L 05/05/08 0.62 -- 100 -- NO NO ND ND NO ug/L 12/04/08 1.5 - 100 -- 7.9 J 9.1 J 7.6 J 7.8 J ND ug/L 04/13/09 1.5 - 100 -- NO NO NO NO NO ug/L 10/20/09 1.5 - 100 NO ND 6.0 J ND 6.2 J NO ug/L 04/30/10 1.5 - 100 -- 3.0 J 3.5 J 4.6 J 4.1 J NO ug/L 10/11/10 1.5 -- 100 -- NO NO NO NO NO ug/L 05/12/11 1.2 -- 100 9.7 J 7.5 J NO NO NO NO ug/L 10/07/11 1.2 -- 100 NO NO NO NO NO NO ug/L 04/19/12 1.2 - too NO NO NO NO NO NO ug/L 10/26/12 1.2 - too NO 4.4 J NO NO NO NO ug/L 04/25/13 0.96 - too 1.0 J 1.0 J NO NO 1.6 J NO ug/L 09/1 2/1 3 1.2 - too NO NO NO NO NO NO ug/L 04/25/14 1.2 - too NO NO NO NO NO NO ug/L 10/02/14 1.2 - 100 NO NO NO NO NO NO ug/L 04/06/15 1.2 - 100 NO NO NO NO NO NO ug/L 10/07/15 1.2 - 100 NO NO NO NO NO NO ug/L 04/20/16 1.2 - 100 ND NO ND NO NO NO ug/L 09/26/16 10 - 100 ND 11 J ND NO 11 J ND ug/L 04/28/17 10 - 100 23 B 19 B 19 B 36 B 16 B 33 J ug/L 10/1 7/1 7 10 - 100 ND NO ND NO NO ND ug/L 04/1 6/1 8 10 - 100 ND ND ND ND ND ND ug/L 10/1 8/1 8 10 20 -- ND NO ND NO NO ND ug/L 04/1 2/1 9 10 20 -- ND ND ND ND ND ND ug/L 10/08/19 10 20 -- ND NO ND ND NO ND ug/L 04/20/20 10 20 -- ND ND ND ND ND ND ug/L 10/15/20 10 20 -- ND NO ND ND ND ND ug/L 04/29/21 10 20 ND ND ND ND ND ND a p R 4 ors August2021 TABLE 6 19131339.103 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill -Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface water Monitoring Points (SW Standard) Units Dale Detection Quanitation Reporting Blanks Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Chloroform ug/L 03/01/00 -- - 5 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- - 5 ND ND ND ND ND ND ug/L 03/01/01 -- - 5 ND ND ND ND ND ND ug/L 09/01/01 -- - 5 ND ND ND ND ND ND ug/L 03/01/02 -- - 5 ND ND ND ND ND ND ug/L 09/0,/02 -- - 5 ND ND ND ND ND ND ug/L 04/01/03 -- - 5 ND ND ND ND ND ND ug/L 10/01/03 - - 5 ND ND ND ND ND ND ug/L 03/01/04 - - 5 ND ND ND ND ND ND ug/L 09/01/04 - - 5 ND ND ND ND ND ND ug/L 05/01/05 - - 5 ND ND ND ND ND ND ug/L 10/01/05 - - 5 ND ND ND ND ND ND ug/L 04/01/06 - - 5 ND ND ND ND ND ND ug/L 10/01/06 - - 5 ND ND ND ND ND ND ug/L 04/10/07 - -- - 0.16 0.16 2.5 J 0.69 J 0.6 J ND ug/L 09/25/07 - -- - 0.37 J ND 8.4 1.2 J 1.2 J ND ug/L 05/05/08 0.2 -- 5 -- ND ND ND ND ND ug/L 12/04/0 0.2 -- 5 -- 0.2 0.58 J 0.2 0.2 ND ug/L 04/13/09 0.2 -- 5 -- ND ND ND ND ND ug/L 10I20/09 0.2 -- 5 ND ND 2.4 J 2.1 J 1.3 J ND u9/L 04/30/10 0.083 -- 5 -- ND 1.8 J ND ND ND ug/L 1Oil /10 0.2 -- 5 -- 0.2 7.4 2.0 J 2.0 J ND ug/L 05;12;11 0.7 -- 5 ND ND ND J ND ND ND ug/L 10/07/11 0.7 -- 5 ND ND 2.4 J 0.92 J 1.1 J ND ug/L 04119112 0.18 -- 5 ND ND 1.0 J 0.45 J ND ND ug/L 10/26/12 0.18 -- 5 ND ND 1.2 J ND ND ND ug/L 04125113 0.25 -- 5 ND ND 0.51 J ND ND ND ug/L 09/12/13 0.18 -- 5 ND ND 1.8 J 0.76 J 0.76 J ND ug/ 04I25114 0.18 -- 5 1.6 J ND 1.7 J 0.46 J 0.58 J ND ug/L 10/02/14 0.18 -- 5 1.2 J ND 0.95 J 1.0 J ND ND ug/L 04I06/15 0.18 -- 5 ND ND 0.49 J ND ND ND ug/L 10/07/15 0.18 -- 5 ND ND 2.4 J 0.92 J 1.0 J ND ug/L 04/20/16 0.18 -- 5 ND ND ND ND ND ND ug/L 09/26/16 0.18 -- 5 ND ND 1.6 J ND ND ND ug/L 04/28/17 0.18 -- 5 ND ND ND ND ND ND ug/L 10/17/17 0.18 -- 5 ND ND ND ND ND ND ug/L 04/16/18 0.18 -- 5 ND ND ND ND ND ND ug/L 1 0/1 8/1 8 0.18 1.0 - ND ND ND ND ND ND uglL 04112/19 0.18 1.0 - ND ND ND ND ND ND ug/L 10/08/19 0.18 1.0 - ND ND ND ND ND ND ug/L 04/20/20 0.18 1.0 - ND ND ND ND ND ND ug/L 10/15/20 0.18 1.0 - ND ND ND ND ND ND ug/L 04129/21 0.18 1.0 ND ND ND ND ND ND Dibromochloromethane ug/L 03/01/00 - -- 5 ND ND ND ND ND ND No5W Standard ug/L 03/01/01 - -- 5 ND ND ND ND ND ND ug/L 03,01/02 - -- 5 ND ND ND ND ND ND uglL 09I01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/0,/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 - - 5 ND ND ND ND ND ND ug/L 09/01/04 - - 5 ND ND ND ND ND ND ug/L 05/01/05 - - 5 ND ND ND ND ND ND ug/L 10/0,/05 - - 5 ND ND ND ND ND ND ug/L 04/01/06 -- - 5 ND ND ND ND ND ND ug/L 04/10/07 -- - -- ND ND 0.54 J ND ND ND ug/L 09/25/07 -- - -- ND ND 2.8 J ND ND ND ug/L 05/05/08 0.28 - 3 - ND ND ND ND ND ug/L 12/04/08 0.32 - 3 - ND ND ND ND ND ug/L 04/13/09 0.32 - 3 - ND ND ND ND ND ug/L 10/20/09 0.32 - 3 ND ND ND ND ND ND ug/L 04/30/10 0.067 - 3 - ND ND ND ND ND ug/L 10/11/10 0.32 - 3 - 0.32 6.6 1.2 J 4.6 ND ug/L 05/12/11 %3 - 3 ND ND ND ND ND ND ug/L 10/07/11 0.63 - 3 ND ND ND ND ND ND ug/L 04/19/12 0.17 - 3 ND ND ND ND ND ND ug/L 10/26/12 0.17 - 3 ND ND ND ND ND ND ug/L 04/25/13 0.49 - 3 ND ND ND ND ND ND ug/L 09/12/13 0.17 - 3 ND ND ND ND ND ND ug/L 04/25/14 0.17 - 3 ND ND ND ND ND ND ug/L 10/02/14 0.17 - 3 ND ND ND ND ND ND ug/L 04/06/15 0.17 - 3 ND ND ND ND ND ND ug/L 10/07/15 0.17 - 3 ND ND ND ND ND ND ug/L 04/20/16 0.17 - 3 ND ND ND ND ND ND ug/L 09/26/16 0.17 - 3 ND ND ND ND ND ND ug/L 04/28/17 0.17 - 3 ND ND ND ND ND ND ug/L 10/17/17 0.17 - 3 ND ND ND ND ND ND ug/L 04/16/18 0.17 - 3 ND ND ND ND ND ND ug/L 10/18/18 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.17 1.0 -- ND ND ND ND ND ND u /L 04/29/21 0.17 1.0 ND ND ND ND ND ND 1,4-Dichlorobemmne ug/L 03/01/00 -- - 5 ND ND ND ND ND ND SW Standard = 100 ug/L ug/L 03/01/01 -- - 5 ND ND ND ND ND ND ug/L 03/01/02 - - 5 ND ND ND ND ND ND ug/L 09/01/02 - -- 5 ND ND ND ND ND ND ug/L 04/01/03 - -- 5 ND ND ND ND ND ND ug/L 10/01/03 - -- 5 ND ND ND ND ND ND ug/L 03/01/04 - - 5 ND ND ND ND ND ND ug/L 09/01/04 - - 5 ND ND ND ND ND ND ug/L 05/01/05 - -- 5 ND ND ND ND ND ND ug/L 10/01/05 - -- 5 ND ND ND ND ND ND ug/L 04/01/06 - -- 5 ND ND ND ND ND ND ug/L 04/10/07 - -- - ND ND ND ND ND ND ug/L 09/25/07 - -- - ND ND ND ND ND ND ug/L 05105/0 0.2 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.38 -- 1 -- ND ND ND ND ND ug/L 04/13/0' 0.38 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.38 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.1 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.79 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.79 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.19 -- 1 ND ND ND ND ND ND ug/L 10126/12 0.19 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.14 -- 1 ND ND 0.46 J ND 0.19 J ND ug/L 09/12/13 0.19 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.19 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.19 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.19 -- 1 ND ND ND ND ND ND ug/L 10'07'15 0.19 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.19 - 1 ND ND ND ND ND ND ug/L 09/26/16 0.19 - 1 ND ND ND ND ND ND ug/L 04/28/17 0.19 - 1 ND ND ND ND ND ND ug/L 10/17/17 0.19 - 1 ND ND ND ND ND ND ug/L 04/1 6/1 8 0.19 - 1 ND ND ND ND ND ND ug/L 10/18/18 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.19 1.0 - ND ND ND ND ND ND 04/29/21 0.19 1.0 ND ND ND ND ND ND ZChloromethane L 03/01/00 - -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/0,/00 - -- 10 ND ND ND ND ND ND ug/L 03/01/01 - -- 10 ND ND ND ND ND ND ug/L 09/01/01 - -- 10 ND ND ND ND ND ND ug/L 03/01/02 - -- 10 ND ND ND ND ND ND ug/L 09/01/02 - - 10 ND ND ND ND ND ND ug/L 04/01/03 - - 10 ND ND ND ND ND ND ug/L 10/01/03 -- - 10 ND ND ND ND ND ND ug/L 03/01/04 -- - 10 ND ND ND ND ND ND ug/L 09/01/04 -- - 10 ND ND ND ND ND ND ug/L 05/01/0 -- - 10 ND ND ND ND ND ND ug/L 10/0,/05 -- - 10 ND ND ND ND ND ND ug/L 04/01/06 -- - 10 ND ND ND ND ND ND ug/L 10/01/06 -- - 10 ND ND ND ND ND ND ug/L 04/10/07 -- - -- ND ND ND ND ND ND ug/L 09/25/07 -- - -- ND ND ND ND ND ND ug/L 05/05/08 0.23 - 1 - ND ND ND ND ND ug/L 12/04/08 0.34 - 1 - ND ND ND ND ND ug/L 04/13/09 0.34 - 1 - ND ND ND ND ND ug/L 10/20/09 0.34 - 1 ND ND ND ND ND ND ug/L 04/30/10 0.05 - 1 - ND ND ND ND ND ug/L 10/11/10 0.34 - 1 - 0.82 B 0.34 0.34 B 0.62 B 0.43 J ug/L 05/12/11 0.55 - 1 ND ND ND ND ND ND ug/L 10/07/11 0.55 - 1 ND ND ND ND ND ND ug/L 04/19/12 0.13 - 1 ND ND ND ND ND ND ug/L 10/26/12 0.13 - 1 ND ND ND ND ND ND ug/L 04/25/13 0.44 - 1 ND ND ND ND ND ND ug/L 09/1 21 3 0.13 - 1 ND ND ND ND ND ND ug/L 04/25/14 0.13 - 1 ND ND ND ND ND ND ug/L 10/02/14 0.13 - 1 ND ND ND ND ND ND ug/L 04/06/15 0.13 - 1 ND ND ND ND ND ND ug/L 10/07/15 0.13 - 1 ND ND ND ND ND ND ug/L 04/20/16 0.13 - 1 ND ND ND ND ND ND ug/L 09/26/16 0.13 - 1 ND ND ND ND ND ND ug/L 04/28/17 0.13 - 1 0.42 J ND ND 0.78 J 0.41 J ND ug/L 10/17/17 0.13 - 1 ND ND ND ND ND ND ug/L 04/16/18 0.13 - 1 ND ND ND ND ND ND ug/L 10/18/18 0.13 1.0 - ND ND ND ND ND ND ug/L 04/12/19 0.13 1.0 - ND ND ND ND ND ND ug/L 10/08/19 0.13 1.0 - ND ND ND ND ND ND ug/L 04/20/20 0.13 1.0 - ND ND ND ND ND ND ug/L 10/15/20 0.13 1.0 - ND ND ND ND ND ND ug/L 04/29/21 0.13 1.0 ND ND ND ND ND ND a p R 5 of August2021 TABLE 6 19131339.103 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill -Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Dale Detection Quanitation Reporting Blanks Limit Limit Limit SWA SW-2 SW-3 SW-4 SW-5 Methylene Chloride ug/L 03/01/00 -- - 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- - 10 ND ND ND ND ND ND ug/L 03/01/01 -- - 10 ND ND ND ND ND ND ug/L 09/01/01 -- - 10 ND ND ND ND ND ND ug/L 03/0,/02 -- - 10 ND ND ND ND ND ND ug/L 09/0,/02 -- - 10 ND ND ND ND ND ND ug/L 04/01/03 -- - 10 ND ND ND ND ND ND ug/L 10/01/03 - - 10 ND ND ND ND ND ND ug/L 03/01/04 - - 10 ND ND ND ND ND ND ug/L 09/01/04 - - 10 ND ND ND ND ND ND ug/L 05/01/05 - - 10 ND ND ND ND ND ND ug/L 10/01/05 - -- 10 ND ND ND ND ND ND ug/L 04/01/06 - -- 10 ND ND ND ND ND ND ug/L 10/01/06 - -- 10 ND ND ND ND ND ND ug/L 04/10/07 - -- - ND ND ND ND ND ND ug/L 09/25/07 - -- - ND ND ND ND ND ND ug/L 05/05/08 0.24 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.53 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.53 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.53 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.07 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.53 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.14 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.14 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.23 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.23 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.5 -- 1 ND ND ND ND ND ND ug/L 09/12113 0.23 -- 1 ND ND ND ND ND ND ug/L 04/25114 0.23 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.23 -- 1 ND ND ND ND 0.77 J ND ug/L 04/06;15 0.23 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.23 -- 1 ND ND ND ND ND ND ug/L 04I20116 0.23 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.23 -- 1 ND ND ND ND ND ND ug/L 04128/17 0.23 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 1 ND ND ND ND ND ND ug/L 1oil 8/18 0.23 1.0 - ND ND ND ND ND ND uglL 04112/19 0.23 1.0 - ND ND ND ND ND 0.73 J ug/L 10/08/19 0.23 1.0 - ND ND ND ND ND ND ug/L 04/20/20 0.23 1.0 - ND ND ND ND ND ND ug/L 10/15/20 0.23 1.0 - ND ND ND ND ND ND u /L 04/29/21 0.23 1.0 ND ND ND ND ND ND Trichlomethene ug/L 03/01/00 - -- 5 ND ND ND ND ND ND SW Standard ug/L 09I01/00 - -- 5 ND ND ND ND ND ND Human Health=30 ug/L ug/L 03/01/01 - -- 5 ND ND ND ND ND ND uglL 09/01/01 - -- 5 ND ND ND ND ND ND ug/L 03/01/02 - -- 5 ND ND ND ND ND ND uglL 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 - - 5 ND ND ND ND ND ND uglL 10/01/03 - - 5 ND ND ND ND ND ND ug/L 03/01/04 - - 5 ND ND ND ND ND ND ug/L 09/01/04 - - 5 ND ND ND ND ND ND ug/L 05/01/05 - - 5 ND ND ND ND ND ND ug/L 10/0,/05 - - 5 ND ND ND ND ND ND ug/L 04/01/06 -- - 5 ND ND ND ND ND ND ug/L 10/01/06 -- - 5 ND ND ND ND ND ND ug/L 04/10/07 -- - -- ND ND ND ND ND ND ug/L 09/25/07 -- - -- ND ND ND ND ND ND ug/L 05/05/08 0.25 - 1 - ND ND ND ND ND ug/L 12/04/08 0.38 - 1 - ND ND ND ND ND ug/L 04/13/09 0.38 - 1 - ND ND ND ND ND ug/L 10/20/09 0.38 - 1 ND ND ND ND ND ND ug/L 04/30/10 0.13 - 1 - ND ND ND ND ND ug/L 10/11/10 0.38 - 1 - ND ND ND ND ND ug/L 05/12/11 0.72 - 1 ND ND ND ND ND ND ug/L 10/07/11 0.72 - 1 ND ND ND ND ND ND ug/L 04/19/12 0.15 - 1 ND ND 0.69 J ND ND ND ug/L 10/26/12 0.15 - 1 ND ND ND ND ND ND ug/L 04/25/13 0.23 - 1 ND ND ND ND ND ND ug/L 09/12/13 0.15 - 1 ND ND ND ND ND ND ug/L 04/25/14 0.15 - 1 ND ND ND ND ND ND ug/L 10/02/14 0.15 - 1 ND ND ND ND ND ND ug/L 04/06/15 0.15 - 1 ND ND ND ND ND ND ug/L 10/07/15 0.15 - 1 ND ND ND ND ND ND ug/L 04/20/16 0.15 - 1 ND ND ND ND ND ND ug/L 09/26/16 0.15 - 1 ND ND ND ND ND ND ug/L 04/28/17 0.15 - 1 ND ND ND ND ND ND ug/L 10/1 7/1 7 0.15 - 1 ND ND ND ND ND ND ug/L 04/16/18 0.15 - 1 ND ND ND ND ND ND ug/L 10/18/18 0.15 1.0 - ND ND ND ND ND ND ug/L 04/12/19 0.15 1.0 - ND ND ND ND ND ND ug/L 10/08/19 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.15 1.0 ND ND ND ND ND ND Xylenes (Total) ug/L 09/25/07 -- -- ND ND ND ND ND ND ug/L 05/05/08 0.67 5 - ND ND ND ND - ug/L 12/04/08 0.4 5 - ND ND ND ND - ug/L 04/13/09 0.4 5 - ND ND ND ND - ug/L 10/20/09 0.4 5 ND ND ND ND ND ND ug/L 04/30/10 0.22 5 - ND ND ND ND - ug/L 10/11/10 0.4 5 -- ND ND ND ND ND ug/L 05/12/11 2.1 5 ND ND ND ND ND - ug/L 10/07/11 2.1 5 ND ND ND ND ND -- ug/L 04/19/12 0.45 5 ND ND ND ND ND - ug/L 10/26/12 0.45 5 ND ND ND ND ND - ug/L 04/25/13 0.67 5 ND ND ND ND ND - ug/L 09/12/13 0.45 5 ND ND ND ND ND -- ug/L 04/2514 0.45 5 ND ND ND ND ND -- ug/L 10102;14 0.45 5 ND ND ND ND ND -- ug/L 04/06/15 0.45 5 ND ND ND ND ND -- ug/L 10/07/15 0.45 5 ND ND ND ND ND -- ug/L 04/20/i6 0.45 5 ND ND ND ND ND -- ug/L 09/26/16 0.45 5 ND ND ND ND ND -- ug/L 04.8/17 0.45 5 ND ND ND ND ND ND ug/L 10;17/17 0.45 5 ND ND ND ND ND ND ug/L 04/i6/18 0.45 5 ND ND ND ND ND ND ug/L 101818 0.45 3 ND ND ND ND ND ND ug/L 04;12;19 0.45 3.0 - ND ND ND ND ND ND ug/L 10/08/19 0.45 3.0 - ND ND ND ND ND ND ug/L 04/20/20 0.45 3.0 - ND ND ND ND 1.5 J ND ug/L 10/15/20 0.45 3.0 - ND ND ND ND ND ND ug/L 04/29/21 0.45 3.0 ND ND ND ND ND ND 1,4-Dioxane ug/L 10/18/18 1.2 2.0 - ND ND ND 2.1 1.5 J ND (SW Standard = 80 ug/L) ug/L 04/12/19 1.2 2.0 - ND 1.6 J ND ND ND ND ug/L 10/08/19 1.2 2.0 - ND 1.3 J ND 1.2 J ND ND ug/L 04/20/20 0.80 2.0 - ND 1.6 J ND 0.89 J 0.91 J ND ug/L 10/15/20 0.80 2.0 - ND 1.2 J ND ND 1.0 J ND ug/L 04/29/21 0.80 2.0 ND 1.7 J ND 1.0 J 0.87 J ND Notes: B = blank -qualified data Shaded = concentrations above acute standards are shaded Bold = concentrations above chronic standards are bolded Data prior to April 2017 provided by S&ME Engineering # = EPA Action Level = EPA Secondary MCL Blanks = field, trip and method blanks IMAC = Interim Maximum Allowable Concentration (under NC 2L Rules) EPA MCL = United States Environmental Protection Agency Maximum Contaminant Level MDL = laboratory method detection limit ug/L = micrograms per liter mg/L = milligrams per liter nM = nano mols SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on 01/18/07 - = no data available or no limit established NC 2L = North Carolina Water Quality Standard ND = not detected above the laboratory detection limit or stated reporting limit J = Prior to the November 2018 event, J flags are estimated values below the SWS Reporting limit. Beginning with the November 2018 event, J flags are estimated values between MDL and PQL. The following dilutions were noted for the April 2021 event: antimony & selenium by 2x (all points). Laboratory method blank data was unavailable for data prior to April 2017. However, B flags for the 04/16/09, 10/07/09, and 10/1 1/1 0 were present on laboratory electronic files. Hardness values collected last during the April 2021 event (mg/L): SW-1 = 116, SW-2 = 103, SW-3 = 89, SW-4 = 143, SW-5 = 118 eap R 6ons August 2021 19131339.103 TABLE 7 Summary of Surface Water Field Parameters Detected Constituents White Street Landfill - Phase II, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date SW-1 SW-2 SW-3 SW-4 SW-5 pH (Field) S.U. 03/25/99 7.27 7.26 7.30 - -- S.U. 09/23/99 7.15 7.64 6.86 -- -- S.U. 03/27/00 8.06 8.15 7.89 8.19 8.02 S.U. 09/13/00 7.56 7.31 ND 7.25 7.06 S.U. 03/12/01 7.51 7.29 7.29 7.24 7.18 S.U. 09/13/01 7.51 7.51 7.22 7.24 7.18 S.U. 03/07/02 7.20 7.26 7.04 7.20 6.80 S.U. 09/18/02 7.43 7.33 - 7.36 6.97 S.U. 04/15/03 7.87 7.60 7.61 7.50 7.62 S.U. 10/15/03 7.26 6.80 6.98 7.15 6.99 S.U. 03/24/04 9.50 8.80 8.99 8.63 8.63 S.U. 09/22/04 7.76 7.26 7.61 7.61 7.63 S.U. 05/10/05 9.56 9.41 9.36 9.45 9.28 S.U. 10/11/05 7.37 7.07 7.19 7.17 7.35 S.U. 04/24/06 7.11 6.99 6.86 7.20 7.38 S.U. 10/16/06 - - - - -- S.U. 04/10/07 6.24 6.64 6.55 7.02 7.16 S.U. 09/25/07 6.81 7.28 6.28 7.36 7.20 S.U. 05/02/08 - - - - -- S.U. 12/05/08 - 7.82 7.56 7.85 7.98 S.U. 04/16/09 - 8.01 8.13 7.89 7.89 S.U. 10/07/09 - - - - -- S.U. 04/28/10 - - - - -- S.U. 10/05/10 - 8.05 7.65 8.05 7.81 S.U. 05/10/11 7.74 7.74 7.71 7.64 7.54 S.U. 10/06/11 7.21 7.26 6.90 7.22 7.70 S.U. 04/16/12 - - - - -- S.U. 10/24/12 - - - - -- S.U. 04/24/13 6.97 7.24 6.92 7.16 7.63 S.U. 09/09/13 7.68 8.30 7.59 7.76 7.69 S.U. 04/22/14 7.54 7.29 7.30 7.37 7.02 S.U. 10/01/14 8.03 8.03 7.88 7.72 7.84 S.U. 04/07/15 8.13 7.77 7.59 7.84 7.79 S.U. 10/06/15 7.27 7.37 7.34 7.62 7.19 S.U. 04/18/16 7.57 7.68 7.56 7.29 7.39 S.U. 09/26/16 7.22 6.75 7.21 7.30 7.34 S.U. 04/25/17 7.41 7.40 7.14 7.28 7.22 S.U. 10/16/17 7.38 6.88 7.07 7.45 7.94 S.U. 04/16/18 7.48 7.38 7.42 7.67 7.38 S.U. 10/18/18 7.49 8.01 7.50 7.43 7.40 S.U. 04/08/19 7.07 6.50 7.69 7.28 7.50 S.U. 10/07/19 7.56 7.07 7.54 7.42 7.50 S.U. 04/20/20 8.00 7.40 7.72 7.88 7.57 S.U. 10/15/20 7.65 7.22 7.76 7.50 7.39 S.U. 04/28/21 7.57 7.46 7.44 7.46 7.44 Specific Conductance (Field) us/cm 03/25/99 347 155 309 - -- us/cm 09/23/99 811 123 487 - -- US/cm 03/27/00 417 186 363 318 315 us/cm 09/13/00 303 233 ND 471 438 us/cm 03/12/01 6919 6145 6145 6393 5960 us/cm 09/13/01 6919 7324 6063 6393 5960 us/cm 03/07/02 420 377 577 561 555 us/cm 09/18/02 248 271 - 449 469 us/cm 04/15/03 74 254 261 345 325 us/cm 10/15/03 215 256 357 334 340 us/cm 03/24/04 293 253 410 378 379 us/cm 09/22/04 242 223 234 424 1 us/cm 05/10/05 283 271 391 387 390 us/cm 10/11/05 167 215 319 264 269 us/cm 04/24/06 195 182 335 286 404 us/cm 10/16/06 -- -- -- -- -- us/cm 04/10/07 31.9 28.9 43.6 42.9 43.5 us/cm 09/25/07 31.0 13.0 57.0 53.0 54.0 us/cm 05/02/08 - - - - -- us/cm 12/05/08 - 31.6 32.6 31.1 29.1 us/cm 04/16/09 - 19.8 23.8 26.5 24.9 us/cm 10/07/09 - - - - -- us/cm 04/28/10 - - - - -- us/cm 10/05/10 - 27.9 54 38.9 35.7 us/cm 05/10/11 256 209 345 412 405 us/cm 10/06/11 309 218 529 462 446 us/cm 04/16/12 - - - - -- us/cm 10/24/12 - - - - -- us/cm 04/24/13 237 242 381 362 380 us/cm 09/09/13 327 266 461 439 448 us/cm 04/22/14 337 275 430 375 420 us/cm 10/01/14 276 228 464 444 441 us/cm 04/07/15 318 255 400 378 423 us/cm 10/06/15 229 151 337 299 284 us/cm 04/18/16 254 183 313 307 300 us/cm 09/26/16 293 214 439 412 427 us/cm 04/25/17 211 198 318 272 1272 us/cm 10/16/17 209 171 211 241 263 us/cm 04/16/18 233 215 234 217 227 us/cm 10/18/18 191 264 159 209 264 us/cm 04/08/19 129 210 158 270 248 us/cm 10/07/19 308 219 290 320 325 us/cm 04/20/20 189 212 194 192 197 us/cm 10/15/20 221 192 216 221 223 us/cm 04/28/21 251 208 228 259 252 GOLGEA .,.,,,.e. 1 of 2 August 2021 19131339.103 TABLE 7 Summary of Surface Water Field Parameters Detected Constituents White Street Landfill - Phase II, Permit No. 41413 Greensboro, North Carolina Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date SW-1 SW-2 SW-3 SW-4 SW-5 Temperature (Field) °C 03/25/99 11.81 11.22 13.86 - -- °C 09/23/99 18.45 17.18 21.83 - -- °C 03/27/00 14.85 15.73 17.17 15.53 14.29 °C 09/13/00 25.27 23.45 - 24.96 25.53 °C 03/12/01 14.86 16.71 16.71 15.51 16.52 °C 09/13/01 14.86 16.65 16.74 15.51 16.52 °C 03/07/02 12.12 13.02 16.45 14.40 13.20 °C 09/18/02 18.66 16.70 - 19.05 18.96 °C 04/15/03 21.65 22.24 20.92 20.11 17.23 °C 10/15/03 17.39 18.39 20.06 18.45 20.33 °C 03/24/04 16.00 18.06 17.17 15.83 17.22 °C 09/22/04 22.67 21.95 25.28 24.17 22.95 °C 05/10/05 24.09 22.85 23.97 23.69 21.78 °C 10/11/05 18.60 18.30 20.60 20.00 19.80 °C 04/24/06 18.30 16.26 18.47 19.05 22.24 °C 10/16/06 - - - - -- °C 04/10/07 10.55 8.05 12.20 14.82 13.49 °C 09/25/07 17.06 21.61 23.84 18.61 19.48 °C 05/02/08 - - - - -- °C 12/05/08 - 7.00 11.30 9.50 8.80 °C 04/16/09 - 12.20 14.30 14.50 13.20 °C 10/07/09 - - - - -- °C 04/28/10 - - - - -- °C 10/05/10 - - - - -- °C 05/10/11 19.10 17.50 19.30 19.40 19.50 °C 10/06/11 16.16 13.10 19.10 17.80 18.67 °C 04/16/12 - - - - -- °C 10/24/12 - - - - -- °C 04/24/13 16.35 14.24 17.40 16.28 16.20 °C 09/09/13 24.70 22.80 25.50 24.80 25.00 °C 04/22/14 15.70 12.90 16.80 17.70 15.30 °C 10/01/14 19.33 19.21 21.28 19.92 22.08 °C 04/07/15 17.50 16.70 18.50 17.90 16.00 °C 10/06/15 18.76 17.11 21.82 20.90 19.20 °C 04/18/16 18.85 18.38 1983. 19.23 18.57 °C 09/26/16 21.60 20.60 23.80 22.50 22.60 °C 04/25/17 21.17 19.60 20.20 2056. 10.05 °C 10/16/17 15.42 15.62 11.55 16.71 16.86 °C 04/16/18 11.75 9.66 8.67 12.24 12.24 °C 10/18/18 14.7 14.9 14.9 13.2 19.8 °C 041081,9 17.4 15.7 19.1 17.5 19.3 °C 10/07/19 20.0 18.6 19.7 19.8 21.1 °C 04/20/20 16.8 15.7 16.4 15.5 15.3 °C 10/15/20 18.5 17.2 18.1 16.6 15.8 °C 04/28/21 21.3 19.9 17.6 20.5 20.7 Turbidity (Field) NTU 04/25/17 13.9 7.05 96.5 14.7 9.02 NTU 10/16/17 5.89 2.71 73.8 8.40 5.78 NTU 04/16/18 13.9 12.5 14.6 26.3 22.4 NTU 10/18/18 4.94 4.84 3.77 9.87 5.30 NTU 04/18/19 4.04 26.1 16.5 5.24 7.97 NTU 10/07/19 4.28 3.84 3.61 4.98 3.90 NTU 04/20/20 8.23 3.59 9.71 25.4 9.88 NTU 10/15/20 4.81 3.64 4.86 6.88 6.38 NTU 04/28/21 4.18 4.83 30.4 6.19 6.23 Oxidation Reduction Potential (field) mV 04/25/17 69.8 50.6 72.3 79.4 77.3 mV 10/16/17 81.7 60.9 174.0 81.3 10.7 mV 04/16/18 119.5 95.2 202.0 190.5 115.8 mV 10/18/18 115.1 61.7 97.2 143.1 7.9 mV 04/08/19 124.5 143.2 5.3 101.8 332.5 mV 10/07/19 137.1 17.2 179.6 159.5 170.9 mV 04/20/20 179.1 7.7 117.5 144.2 77.8 mV 10/15/20 198.9 -2.6 190.0 147.3 70.9 mV 04/28/21 115.3 -32.8 236.6 154.1 141.1 Dissolved Oxygen (field) mg/L 04/25/17 7.22 7.50 7.44 6.91 7.02 mg/L 10/16/17 8.33 8.08 8.37 8.01 6.90 mg/L 0.16/18 8.01 8.97 7.92 7.18 8.13 mg/L 10/18/18 5.95 10.74 6.99 7.06 5.81 mg/L 0-0-19 6.91 7.94 6.73 7.19 9.47 mg/L 10/07/19 5.32 4.89 5.90 5.03 6.19 mg/L 04/20/20 9.06 9.38 9.07 7.65 7.07 mg/L 10/15/20 7.37 8.20 7.47 8.05 7.72 m /L 04/28/21 7.34 8.91 7.60 8.04 6.56 Notes: S.U. = Standard Units NTU = Nephelometric Turbidity Units US/cm = microsiemens per centimeter mg/L = milligramer per liter -- = no data available Data prior to April 2017 provided by SBME Engineering GiGOLDe.naA .,.,.,.2 of 2 Figures LEGEND J SW-3 LOCATED -1600 FT. WEST lip � �S700 000�, —4yVV r I . VVCJ I SW-2 LOCATED -500 FT. WEST 1 n)1 �� 680 • �jsn84.03 �7 II-7- 683.86 I 686 7 r IM w- • 681.34 MSW LANDFILL �DIJ LIMITS OF WASTE 684.12 CLIENT CITY OF GREENSBORO CONSULTANT molll SW-4 LOCATED -900 FT. EAST YYYY-MM-DD 2021-06-15 DESIGNED GO L D E R PREPARED -,MBER OF WSP REVIEWED GOLDER ASSOCIATES NC, INC. APPROVED NTT SIB DYR RPK O • 0 700— �-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 27, 2021. 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 `iI3 t ulo c,• DO Aso o� I' " ►WHITE ST � P A 0 a '"' D* I(EELr RU ,. a /� 'Jn Oqk� W � Q :T0� O �� J �' 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 27, 2021 PROJECT NO. 19-131339 0 0 FIGURE 1 0 LEGEND ❑ SW-1 SURFACE WATER MONITORING POINT GO L D E R DESIGNED SEP PREPARED SEP MEMBER OF WSP 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 166842117 0 2 APPENDIX A Groundwater and Surface Water Sampling Logs GOLDER Project Name: City of Greensboro Well ID: I)A'Iv -I _y Well Diameter: 2 inches Depth to Bottom: 34. 00 feet Pumping Rate: klo mLtmin, DATE: Y_ 2�J) _Z1 GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339 Sampler(s): Travis Martinez Initial Depth to Water: 7- L( feet Water Column Thickness: 16,16 feet System Volume: '7 -70 Equipment-, Turbidimeter, Y5! ProPJus, WL Meter Dedicated BP, MP- 15 Sp. Cond. M , 'is ; MIN Comments weather conditions, color, type of sample, purge -water management, etc.): Signature: Date: L/ `-� QA/QC Sign Off: Date: - • z GOLDER Project Name: _ City of Greensboro Well ID: Well Diameter: 2 inches Depth to Bottom: �[, KL feet Pumping Rate: (gyp mUmin. DATE: } GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339 Sampler(s): Nicolas Tejeda-Torres Initial Depth to Water: �'�.j feet Water Column Thickness: 4q feet System Volume: L29 Equipment: Turbidimeter, YSi ProPlus, WL Meter _ Dedicated BP. MP-15 Sp. Cond. Temp. ---� Comments (weather conditions, color, type of sample, purge -water management, etc.): D.0 Signature: Date: 2 � 262-4 QAIQC Sign Off: U i/i e',g Date: 7 - '217 - t V GoLuea Project Name: City of Greensboro Well ID: - j Well Diameter: 2 inches Depth to Bottom.- 'Z6.6 4 feet Pumping Rate: A-70 mUmin. Equipment: Turbidimeter, YSI Pro Dedicated BP, MP-15 DATE. 4—Z'y • Z GROUNDWATER SAMPLING LOG Project No./Phase No.: 19.131339 Sampler($): Travis Martinez Initial Depth to Water: 15 tf feet Water Column Thickness: 11.1-7 feet System Volume: .260 WL Meter LO Comments (weather conditions, color, type of sample, purge -water management, etc.): 90 v()a_ At 0103 Signature: QA/QC Sign Off: Date: Y- 2,F ` LI Date: 7 - Z. ? - Z,4 ttbvv_ GOLDER DATE: A 7—t 4-Ic,-Lt< GROUNDWATER SAMPLING LOG Project Name; City of Greensboro Project No./Phase No.: 19131339 Well ID: 1 -2- Sampler(s): Nicolas Tejeda-Torres Well Diameter: 2 inches Initial Depth to Water: lid-!53 feet Depth to Bottom: _ 26aC feet Water Column Thickness: 4- feet Pumping Rate: W-0ao mUmin. System Volume: �_;[ 15 Equipment: Turbidimeter, YSi ProPius, WL Meter Dedicated BP, MP-15 Sp. Cond. Comments (weather conditions, color, type of sample, purge -water management, etc.): Signature: QAIQC Sign Off: Date: 4 �14z�qm Date: 7 - Z 7 - 2-1 GOLDER Project Name: City of Greensboro Well ID:_ Well diameter: 2 inches Depth to Bottom: .17 feet Pumping Rate: _ mUmin. Equipment: Turbidimeter, YSI Pro Dedicated BP. MP-15 DATE: GROUNDWATER SAMPLING LOG Project NodPhase No.: 19131339 Sampler(s): Nicolas Tejeda-Torres Initial Depth to Water: 1 .2(. feet Water Column Thickness: 111,2q feet System Volume: 1 45 WL Meter Sp. Cond. M—(mg/L) r••_� Comments (weather conditions, color, type of sample, purge -water management, etc.): S-y-vtq, E46 Signature: Date: 4(2-8h'—U QAIQC Sign Dff:� Date: 7• Z7 -7,/ GOLDER Project Name: City of Greensboro Well ID: j - 3 B Well Diameter- 2 inches Depth to Bottom: 25.00 feet Pumping Rate: 5 U mVmin. DATE: �{ ` GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339 Sampler(s): Travis Martinez Initial Depth to Water: 13, 17 feet Water Column Thickness: feet System Volume: 6Y5 Equipment: Turbidimeter, YSl ProPlus, WL Meter Dedicated BP, MP- 15 Comments (weather conditions, color, type of sample, purge -water management, etc.): S'-fitr4- Pure, e e, fi N Vz Signature:. ` QA/QC Sign Off, Date: L/" ZP- 2-f Date. ?7-� GOLDER Project Name: City of Greensboro Well ID: -dA Well Diameter: 2 inches Depth to Bottom: Pumping Rate: Equipment: 7-g . pp feet 200 mUmin. DATE: 4(7,d zo-2 t GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339 Sampler(s): Nicolas Tejeda-Torres Initial Depth to Water: Cam. 5-+ feet Water Column Thickness: 4-"�5 tti3.4 3 feet System Volume: 6EE Turbidimeter, YSI ProPlus, WL. Meter Dedicated BF MP-15 •.(milliv' ---I I I ME M - Comments (weather conditions, color, type of sample, purge -water management, etc.): �, Signature: Date; 4(�_ l "L,'�-A QA/QC Sign Off: / Date: 7 - Z7- z/ IGo�yan GOLDER Project Name: City of Greensboro Well ID: - Well diameter: 2 inches Depth to Bottom: feet Pumping Rate: 108 -n'o mL/min. DATE: 4LZR(2( GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339 Sampler($): Nicolas Tejeda-Torres Initial Depth to Water: <-?. feet Water Column Thickness: Ct .Ci 41 feet System Volume: q' Equipment; Turbidimeter, YSI Profts, WL Meter Dedicated BP, MP-f5 ® ® ,is '! .. --- 00 M ----�MINN. Im�1- ---�- Comments (weather conditions, color, type of sample, purge -water management, etc.): weoiw! 6un,rtg . ?VS fir' FieJJ � (k� e �,, _�,(t Ak, Tb*,: 3 .zg INN Signature: QA/QC Sign Off: Date: 4ht (10y Date: 7•') 7-2-/ 16> COLDER Project Name: City of Greensboro Well ID: Well Diameter: 2 inches Depth to Bottom: Pumping Rate: Equipment: 1'l.sx feet W mUmin. DATE: A(2`6 2,Dzt GROUNDWATER SAMPLING LOG Project No.lPhase No.: 19131339 Sampler(s): Nicolas Tejeda-Torres Initial Depth to Water: lu q(a feet Water Column Thickness: t..0q feet System Volume: GCS Turbidimeter, YSJ ProPlus, WL Meter _ Dedicated BP. MP-15 Sp. Cond. ® , '; •■• ,F111 Mid-�---� Comments (weather conditions, color, type of sample, purge -water management, etc.): t1 Yr'.c r* i 149p� Signature: Date: 411Yt-2-02A QAlQC Sign Off: Date: 7• Z7-z/ GOLDER Project Name: Well ID: _ Well Diameter: Depth to Bottom Pumping Rate: City of Greensboro µ7 2 inches .2 1 , 7 U feet O mllmin. DATE: Lf-29-2-1 GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339 Sampler(s): Travis Martinez Initial Depth to Water: P4,65 feet Water Column Thickness:, $ feet System Volume: _� ![) Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated BP, MP-15 ®Sp. Cond. ® `• Comments (weather conditions, color, type of sample, purge -water management, etc.): Signature:`~ Date: 2, c1 1 QA/QC Sign Qff: / 5 r.E Date-, �- 2 GOLDER Project Name: City of Greensboro Well ID: Z - 7E Well Diameter: 2 inches Depth to Bottom: D � , 5 feet Pumping Rate: 100 mUmin• DATE: Lf _2 Y -Z-j GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339 Samplers): Travis Martinez Initial Depth to Water: y feet Water Column Thickness: g feet System Volume: ILlq_? Equipment: Turbidimeter, YSt ProPlus, WL Meter Dedicated BP, MP-15 p Cond. ® i • Comments (weather conditions, color, type of sample, purge -water management, etc.): Sir.} A } 11 '� 5 Signature: QA/QC Sign Off: Date: 14-1 71 Date: 7- Z?-W GOLDER Project Name: City of Greensboro Well ID: 'tC -� Well Diameter: 2 inches Depth to Bottom: Pumping Rate: Equipment: 5Soc.� feet ?.0c) mUmin. DATE: 'l k- g k vu GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339 Samplers): Nicolas Tejeda-Torres Initial Depth to Water: 6,a; feet Water Column Thickness: L(0.w feet System Volume: .� � Turbidimeter, YSi ProPfus, WL Meter Dedicated BP, MP-15 Sp. Cond. Comments (weather conditions, color, type of sample, purge -water management, etc.): "a-k1i C-"du, -405 Signature: QA/QC Sign Off: Date: d�� (7-171 Date: 7. L 7-zJ kjo GOLDER Project Name: City of Greensboro Well ID: U - . Well Diameter: 2 inches Depth to Bottom:j, o,, feet Pumping Rate: t 3O mUmin. DATE: `[ ` 'Z, 11 GROUNDWATER SAMPLING LOG Project No./Phase No.; 19131339 Sampler(s): Travis Martinez Initial Depth to Water: /Q, l feet Water Column Thickness:. feet System Volume: _ &P5 Equipment: Turbidimeter, KG1 ProPlus, WL Meter Dedicated BP, MP-15 ®Sp. Cond. ® r '* ORP ments�](weather conditions, color, type of sample, purge -water management, etc.): I� YL iz � 4 )027 Signature: QA1QC Sign Off: Date: 9 2-,p - Z f Date: 7 - : 7 - Z. GOLDER Project Name: City of Greensboro Well ID: _U - Q- Well Diameter: Depth to Bottom: Pumping Rate: inches .{o feet �0 mLlmin DATE: 4 4.2,011 i-I GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339 Sampler(s): Nicolas Tejeda-Torres Initial Depth to Water: tt. 'c+ feet Water Column Thickness: 41 feet System Volume: C4f-� Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated BP, MP-15 ® Cond. Comments (weather conditions, color, type of sample, purge -water management, etc.): I)JeAa . c tyUrc,P e din Signature: Date: 4�4 JU ❑A1QC Sign Off: Date: '7. 14> GOLDHR Project Name: City of Greensboro Well ID: rh �v Well Diameter: 2 inches Depth to Bottom: ] , q p feet Pumping Rate: 100 mUmin. DATE; q GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339 Sampler(s): Travis Martinez Initial Depth to Water:,Y A feet Water Column Thickness: `7;f feet System Volume: 5-70 Equipment: Turbidimeter, YSI ProPius, WL Meter Dedicated LAP. MP- 15 %mment (weather conditions, color, type of sample, purge -water management, etc.): Signature:_ Date: QAtGC Sign Off: Date: 7 - z 7- 2- GOLDER Project Name: City of Greensboro Well ID: Sm t,, - 3 Well Diameter: 2 inches [depth to Bottom: feet Pumping Rate: mUmin. DATE: Y- L'? - -L GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339 Sampler(s): Travis Martinez ^ Initial Depth to Water: f). I feet Water Column Thickness: _ `2 feet System Volume: 6016 Equipment: Turbidimeter, YSl ProPlus, WL Meter Dedicated BP. MP-15 Sp. Cond. ® ' ■ is ` r.• Comments (weather conditions, color, type of sample, purge -water management, etc.): SI-Rr+- fufle ti� 11Z 6 Signature: QAtOC Sign Off: Date: Y' ze -?/ Date,• µ . 7 -L4 GOLDER Project Name: City & Greensboro Well ID: M �v - Well Diameter: 2 inches Depth to Bottom:-. `t feet Pumping Rate: V7 5 mUmin. DATE: L(- zy - Z I GROUNDWATER SAMPLING LOG Project No./Phase No.: 1.9131339 Sampler(s): Travis Martinez Initial Depth to Water: .2 feet Water Column Thickness: - 6 1 feet System Volume: 675 Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated BP. MP-15 ®Sp. Cond. ® ' , ` ` (weather conditions, color, type of sample, purge -water management, etc.): .rye 'q} Is I Signature; QAIQC Sign Off: Date: L-f - 2-J) - 21 Date: 7 - 2 7 • ?,/ GOLDER DATE: 4 `.0 [u u SURFACE WATER SAMPLING LOG Project Name: City of Greensboro Project No./Phase No.: 19131339 Sample ID: St„ - l Sampler(s): T4M4 8, Sampling Location: W,A , F',,Ipr o CAuX ki, _ Equipment: YSI, Turbidimeter, Hardness Kit Time y1 pH S.U. J Sp. Cond. US/cm Turb. ntu ! - Dis.O2 mg/L 7 Temp. cc J ! I. ORP mu Surface Water Sampling Location Sketch � 1 L Comments (sample methodology, weather conditions, color, silt, etc.): Signature: Date:�� [ QA/QC Sign Off: Date: -7. 2 -7 . z r Q* GOLDER DATE: LALk (-7,0-2-4 SURFACE WATER SAMPLING LOG Project Name: City of Greensboro Project No./Phase No.. Sample ID. sw - I Sampler(s): c'a Sampling Location: tn)e.A u� m� r�cQ; 1�4 Equipment: Time 15.E pH S.U. q Sp. Cond. uS/= _ Turb. ntu 413 Dis. 02 mg1L Temp. oC 1W 41 ORP my YSI, Turbidimeter, Hardness Kit ' Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): ��rc�►��s�'. �1�3 Il. Signature: QAIQC Sign Off: Date: 4 J2-cC('-.-2-E Date: ? • 2� 7 - 2-/ COLDER DATE: 5 - 7 - 2-j SURFACE WATER SAMPLING LOG Project Name: City of Greensboro Project No./Phase No.: 19131339 Sample ID: Sw- Sampler(s): N-4,-4,YW Sampling Location: Equipment: YSI, Turbidimeter, Hardness Kit, Time pH s.u. Sp. Cond. uS/= _2 2� , Turb. ntu 10 Dis. Qg m g/L 7, bo Temp. oC 7 ORP my CHID w4skl ► Surface Water Sampling Location Sketch I Comments (sample methodology, weather conditions, color, slit, etc.): g Si nature: �' Date: 7 QA/QC Sign Off: Date: ? - 27. 21 DATE: 4 L-?-, i I 2,;:)Z G O L D E P SURFACE WATER SAMPLING LOG Project Name: City of Greensboro Project No./Phase No.: 19131339 Sample ID: l A Sampler(s)- Sampling Location: ms iGtn �� I2 j Yrr ! g { Equipment: YSi, Turbidimeter, Hardness Kit Time pH S.U. Sp. Cond. uSlcm-�1 Turb. ntu Dis. O� mg/L Temp. DC , ORP mv _ Surface Water Sampling Location Sketch omments (sample methodology, weather conditions, color, silt, etc.): Signature: Date:�il�f QA/QC Sign Off: � � Date: 7. Z 2- 2- ( GOLDER DATE: 4I ztl Z ZA SURFACE WATER SAMPLING LOG Project Name: City of Greensboro Project No./Phase No.: 19131339 Sample ID: 6W 5 Sampler(s):�; c Diu T�,�.rrc tUY1t Sampling Location: Equipment: YSI, Turbidimeter, Hardness Kit Time }� PH s.u. Cr Sp. Cord. us/cm �- Turb. ntu Dis. 02 mg/L Temp. 0C ZU. 4RP mv Surface Water Sampling Location Sketch 7A�'' Comments (sample methodology, weather conditions, color, silt, etc.): IV I * * • W.,I Date: d � Z-?)1z 0711L Date: 7•'Z;;,- 2- / APPENDIX B April and May 2021 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 Friday, May 14, 2021 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.103, Project Name/Desc: White Street LF-Phase II ENCO Workorder(s): CE03255 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, April 30, 2021. 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 49 PROJECT NARRATIVE Date: May 14, 2021 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase II Lab ID: CE03255 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 LCS exhibited a high bias for 2-Butanone; however, this analyte was not detected in the associated samples. The Continuing Calibration Verification (CCV) exhibited a high bias for 2-Butanone, 4-Methyl-2-pentanone, Acrylonitrile, Chloroethane, and Vinyl acetate; however, these analytes were not detected in the associated samples. The precision between duplicate spikes of Benzene and Chlorobenzene exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these analytes. 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 49 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-IIl Lab ID: CE03255-01 Sampled: 04/28/21 09:37 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/04/21 13:28 05/05/21 11:20 EPA 6020E EPA 3005A 10/25/21 05/04/21 13:39 05/05/21 17:38 EPA 6020E EPA 3005A 10/25/21 05/04/21 13:39 05/05/21 18:18 EPA 8260D EPA 503013_MS 05/12/21 05/07/21 14:18 05/08/21 08:45 Client ID: 4103-II1 Lab ID: CE03255-01RE1 Sampled: 04/28/21 09:37 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/12/21 05/07/21 10:25 05/07/21 15:22 Client ID: 4103-II-2 Lab ID: CE03255-02 Sampled: 04/28/21 14:19 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/04/21 13:28 05/05/21 11:22 EPA 6020E EPA 3005A 10/25/21 05/04/21 13:39 05/05/21 17:42 EPA 6020B EPA 3005A 10/25/21 05/04/21 13:39 05/05/21 18:23 EPA 8260D EPA 503013_MS 05/12/21 05/07/21 14:18 05/08/21 09:12 Client ID: 4103-II-2 Lab ID: CE03255-02RE1 Sampled: 04/28/21 14:19 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/12/21 05/07/21 10:25 05/07/21 12:25 Client ID: 4103-II-3 Lab ID: CE03255-03 Sampled: 04/28/21 13:17 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/04/21 13:28 05/05/21 11:25 EPA 6020E EPA 3005A 10/25/21 05/04/21 13:39 05/05/21 17:46 EPA 8260D EPA 503013_MS 05/12/21 05/06/21 10:06 05/06/21 12:37 EPA 8260D EPA 503013_MS 05/12/21 05/07/21 14:18 05/08/21 09:39 Client ID: 4303-II-4A Lab ID: CE03255-04 Sampled: 04/28/21 11:53 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/04/21 13:28 05/05/21 11:27 EPA 6020B EPA 3005A 10/25/21 05/04/21 13:39 05/05/21 18:31 EPA 8260D EPA 503013_MS 05/12/21 05/06/21 10:06 05/06/21 13:03 EPA 8260D EPA 5030B_MS 05/12/21 05/07/21 14:18 05/08/21 10:06 Client ID: 4103-II-5 Lab ID: CE03255-05 Sampled: 04/28/21 10:55 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/04/21 13:28 05/05/21 11:29 EPA 6020B EPA 3005A 10/25/21 05/04/21 13:39 05/06/21 11:38 EPA 8260D EPA 503013_MS 05/12/21 05/07/21 14:18 05/08/21 10:33 Client ID: 4103-II-5 Lab ID: CE03255-OSRE1 Sampled: 04/28/21 10:55 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(sl EPA 8260D EPA 503013_MS 05/12/21 05/07/21 10:25 05/07/21 12:50 Client ID: 4103-II-6 Lab ID: CE03255-06 Sampled: 04/28/21 15:30 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/04/21 13:28 05/05/21 11:32 EPA 6020E EPA 3005A 10/25/21 05/04/21 13:39 05/06/21 11:42 EPA 8260D EPA 503013_MS 05/12/21 05/06/21 10:06 05/06/21 13:54 EPA 8260D EPA 503013_MS 05/12/21 05/06/21 15:57 05/07/21 08:48 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 49 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-II-7 Lab ID: CE03255-07 Sampled: 04/29/21 11:16 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/26/21 05/04/21 13:28 05/05/21 11:34 EPA 6020E EPA 3005A 10/26/21 05/04/21 13:39 05/06/21 11:46 EPA 8260D EPA 503013_MS 05/13/21 05/06/21 10:06 05/06/21 14:19 EPA 8260D EPA 503013_MS 05/13/21 05/10/21 15:13 05/10/21 22:07 Client ID: 4303-II-7B Lab ID: CE03255-08 Sampled: 04/29/21 11:59 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/26/21 05/04/21 13:28 05/05/21 11:37 EPA 6020E EPA 3005A 10/26/21 05/04/21 13:39 05/06/21 11:51 EPA 8260D EPA 503013_MS O5/13/21 05/10/21 15:13 05/10/21 22:35 Client ID: 4303-II-7B Lab ID: CE03255-08RE1 Sampled: 04/29/21 11:59 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 5030B_MS O5/13/21 05/07/21 10:25 05/07/21 13:16 Client ID: 4103-II-8 Lab ID: CE03255-09 Sampled: 04/29/21 09:36 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/26/21 05/04/21 13:33 05/05/21 13:04 EPA 6020E EPA 3005A 10/26/21 05/04/21 13:39 05/06/21 11:55 EPA 8260D EPA 503013_MS 05/13/21 05/10/21 15:13 05/10/21 23:03 Client ID: 4103-II-8 Lab ID: CE03255-09RE1 Sampled: 04/29/21 09:36 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 5030B_MS 05/13/21 05/07/21 10:25 05/07/21 15:48 Client ID: 4103-II-12 Lab ID: CE03255-10 Sampled: 04/29/21 08:40 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/26/21 05/04/21 13:33 05/05/21 13:29 EPA 6020B EPA 3005A 10/26/21 05/04/21 13:39 05/06/21 11:59 EPA 8260D EPA 503013_MS 05/13/21 05/10/21 15:13 05/10/21 23:31 Client ID: 4103-II-12 Lab ID: CE03255-30RE1 Sampled: 04/29/21 08:40 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/13/21 05/07/21 10:25 05/07/21 13:41 Client ID: 4103-MW-14 Lab ID: CE03255-11 Sampled: 04/28/21 09:04 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/04/21 13:33 05/05/21 13:31 EPA 6020E EPA 3005A 10/25/21 05/04/21 13:39 05/06/21 12:47 EPA 8260D EPA 503013_MS O5/12/21 05/06/21 10:06 05/06/21 16:01 EPA 8260D EPA 503013_MS 05/12/21 05/06/21 15:57 05/07/21 09:15 Client ID: 4303-Duplicate II Lab ID: CE03255-12 Sampled: 04/28/21 00:00 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/04/21 13:33 05/05/21 13:34 EPA 6020B EPA 3005A 10/25/21 05/04/21 13:39 05/06/21 12:51 EPA 8260D EPA 503013_MS 05/12/21 05/06/21 10:06 05/06/21 16:26 EPA 8260D EPA 5030B_MS 05/12/21 05/06/21 15:57 05/07/21 09:42 Client ID: 4303-Trip Blank II Lab ID: CE03255-13 Sampled: 04/28/21 09:04 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 5030B_MS 05/12/21 05/06/21 15:57 05/07/21 10:09 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 49 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-Trip Blank II Lab ID: CE03255-13RE3 Sampled: 04/28/21 09:04 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) EPA 8260D EPA 5030B_MS O5/12/21 Prep Date/Time(s) Analysis Date/Time(s) 05/07/21 10:25 05/07/21 11:59 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Pager) Of 49 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4103-IIl Lab ID: CE03255-01 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dichlorobenzene 8.7 0.19 1.0 ug/L EPA 8260D Barium - Total 317 1.10 10.0 ug/L EPA 6010D Chlorobenzene 1.7 0.17 1.0 ug/L EPA 8260D Chromium - Total 4.92 J 1.40 10.0 ug/L EPA 6010D Cobalt - Total 26.3 1.40 10.0 ug/L EPA 6010D Nickel - Total 26.9 2.20 10.0 ug/L EPA 6010D Tetrahydrofuran 8.0 0.53 1.0 ug/L EPA 8260D Client ID: 4103-IIl Lab ID: CE03255-01RE1 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 170 D 4.0 10 uq/L EPA 8260D I Client ID: 4103-II-2 Lab ID: CE03255-02 Analvte Results Flag MDL PQL Units Method Notes 1,1-Dichloroethane 2.9 0.13 1.0 ug/L EPA 8260D 1,4-Dichlorobenzene 2.4 0.19 1.0 ug/L EPA 8260D Barium - Total 90.1 1.10 10.0 ug/L EPA 6010D Chlorobenzene 0.69 J 0.17 1.0 ug/L EPA 8260D cis-1,2-Dichloroethene 5.6 0.15 1.0 ug/L EPA 8260D Vinyl chloride 1.3 0.32 1.0 ug/L EPA 8260D Client ID: 4103-II-2 Lab ID: CE03255-02RE3 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 2.5 0.80 2.0 ug/L EPA 8260D Client ID: 4103-II-3 Lab ID: CE03255-03 Analvte Results Flag MDL PQL Units Method Notes 1,1-Dichloroethane 1.8 0.13 1.0 ug/L EPA 8260D 1,4-Dioxane 1.0 J 0.80 2.0 ug/L EPA 8260D Barium - Total 162 1.10 10.0 ug/L EPA 6010D Chromium - Total 2.24 J 1.40 10.0 ug/L EPA 6010D Cobalt - Total 10.3 1.40 10.0 ug/L EPA 6010D Nickel - Total 8.30 J 2.20 10.0 ug/L EPA 6010D Zinc - Total 6.55 1 4.40 10.0 ug/L EPA 6010D Client ID: 4303-II-4A Lab ID: CE03255-04 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dichlorobenzene 0.66 1 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 49 0.80 2.0 ug/L EPA 8260D Barium - Total 127 1.10 10.0 ug/L EPA 6010D Chlorobenzene 1.6 0.17 1.0 ug/L EPA 8260D Nickel- Total 39.1 2.20 10.0 ug/L EPA 6010D Client ID: 4103-II-5 Lab ID: CE03255-05 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 72.4 1.10 10.0 ug/L EPA 6010D Cobalt - Total 4.32 J 1.40 10.0 ug/L EPA 6010D Nickel - Total 3.23 J 2.20 10.0 ug/L EPA 6010D Vanadium - Total 3.81 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 5.17 J 4.40 10.0 ug/L EPA 6010D Client ID: 4103-II-5 Lab ID: CE03255-OSRE1 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.5 J 0.80 2.0 ug/L EPA 8260D Client ID: 4103-II-6 Lab ID: CE03255-06 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 14 0.80 2.0 ug/L EPA 8260D Barium - Total 59.2 1.10 10.0 ug/L EPA 6010D Cobalt - Total 2.06 1 1.40 10.0 ug/L EPA 6010D Copper - Total 10.3 1.60 10.0 ug/L EPA 6010D Nickel - Total 4.07 1 2.20 10.0 ug/L EPA 6010D Zinc - Total 18.9 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 6 Of 49 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4103-II-7 Lab ID: CE03255-07 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 7.0 0.80 2.0 ug/L EPA 8260D Barium - Total 34.9 1.10 10.0 ug/L EPA 6010D Client ID: 4303-II-713 Lab ID: CE03255-08 Analvte Results Flag MDL PQL Units Method Notes 1,1-Dichloroethane 1.5 0.13 1.0 ug/L EPA 8260D Barium - Total 38.0 1.10 10.0 uq/L EPA 6010D I Client ID: 4303-II-713 Lab ID: CE03255-08RE1 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.4 J 0.80 2.0 ug/L EPA 8260D Client ID: 4103-II-8 Lab ID: CE03255-09 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 192 1.10 10.0 ug/L EPA 6010D Benzene 0.62 1 0.15 1.0 ug/L EPA 8260D Chlorobenzene 1.9 0.17 1.0 ug/L EPA 8260D Cobalt - Total 6.54 J 1.40 10.0 ug/L EPA 6010D Nickel- Total 122 2.20 10.0 ug/L EPA 6010D Client ID: 4103-II-8 Lab ID: CE03255-09RE1 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 340 D 8.0 20 ug/L EPA 8260D Client ID: 4103-II-12 Lab ID: CE03255-10 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 233 1.10 10.0 ug/L EPA 6010D Cobalt - Total 5.31 J 1.40 10.0 ug/L EPA 6010D Nickel - Total 10.9 2.20 10.0 ug/L EPA 6010D Zinc - Total 20.6 4.40 10.0 ug/L EPA 6010D Client ID: 4103-II-12 Lab ID: CE03255-10RE1 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 3.6 0.80 2.0 ug/L EPA 8260D Client ID: 4103-MW-14 Lab ID: CE03255-11 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 10.7 1.10 10.0 ug/L EPA 6010D Chromium - Total 2.26 J 1.40 10.0 ug/L EPA 6010D Client ID: 4303-Duplicate II Lab ID: CE03255-12 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 13 0.80 2.0 ug/L EPA 8260D Barium - Total 54.3 1.10 10.0 ug/L EPA 6010D Copper - Total 9.10 J 1.60 10.0 ug/L EPA 6010D Nickel - Total 3.03 J 2.20 10.0 ug/L EPA 6010D Zinc - Total 17.8 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 49 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II1 Lab Sample ID:CE03255-01 Received: 04/30/21 13:50 Matrix: Ground Water Sampled: 04/28/2109:37 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF 1,1,1-Trichloroethane [71-55-6]^ 0.12 U ug/L 1 0.12 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 U ug/L 1 0.28 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF 1,1,2-Trichloroethane [79-00-5]^ 0.14 U ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF 1,4-Dichlorobenzene [306-46-7]^ 8.7 ug/L 1 0.19 1.0 lE07023 EPA 8260D 05/08/21 08:45 REF 2-Butanone [78-93-3]^ 1.3 U ug/L 1 1.3 5.0 IE07023 EPA 8260D 05/08/21 08:45 REF 2-Hexanone [591-78-6]^ 0.88 U ug/L 1 0.88 5.0 IE07023 EPA 8260D 05/08/21 08:45 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE07023 EPA 8260D 05/08/21 08:45 REF Acetone [67-64-1]^ 10 U ug/L 1 10 20 IE07023 EPA 8260D 05/08/21 08:45 REF Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 IE07023 EPA 8260D 05/08/21 08:45 REF Benzene[71-43-2]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Bromochloromethane [74-97-5]^ 0.48 U ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Carbon disulfide [75-15-0]^ 1.5 U ug/L 1 1.5 5.0 IE07023 EPA 8260D 05/08/21 08:45 REF Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Chlorobenzene [308-90-7]^ 1.7 ug/L 1 0.17 1.0 lE07023 EPA 8260D 05/08/21 08:45 REF Chloroethane [75-00-3]^ 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF cis-1,3-Dichloropropene [10061-01-5]^ 0.20 U ug/L 1 0.20 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Ethylbenzene[100-41-4]^ 0.13 U ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE07023 EPA 8260D 05/08/21 08:45 REF Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Styrene[100-42-5]^ 0.11 u ug/L 1 0.11 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Tetrahydrofuran [109-99-9]^ 8.0 ug/L 1 0.53 1.0 lE07023 EPA 8260D 05/08/21 08:45 REF Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 IE07023 EPA 8260D 05/08/21 08:45 REF Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 IE07023 EPA 8260D 05/08/21 08:45 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 of 49 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-IIl Lab Sample ID:CE03255-01 Received: 04/30/21 13:50 Matrix: Ground Water Sampled: 04/28/2109:37 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: 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 lE07023 EPA 8260D 05/08/21 08:45 REF Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 95 % 53-136 IE07023 EPA 6260D 05106121 08:45 REF Dibromofluoromethane 43 1 50.0 85 % 67-129 IE07023 EPA 6260D 05106121 08:45 REF Toluene-d8 52 1 50.0 105 % 59-134 IE07023 EPA 6260D 05108121 08:45 REF 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 lE04035 EPA 6020B 05/05/21 18:18 RLF Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04033 EPA 6010D 05/05/21 11:20 JDH Barium [7440-39-3]^ 317 ug/L 1 1.10 10.0 lE04033 EPA 6010D 05/05/21 11:20 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04033 EPA 6010D 05/05/21 11:20 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lE04033 EPA 6010D 05/05/21 11:20 JDH Chromium [7440-47-3]^ 4.92 J ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:20 JDH Cobalt[7440-48-4]A 26.3 ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:20 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lE04033 EPA 6010D 05/05/21 11:20 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04033 EPA 6010D 05/05/21 11:20 JDH Nickel[7440-02-O]^ 26.9 ug/L 1 2.20 10.0 lE04033 EPA 6010D 05/05/21 11:20 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04033 EPA 6010D 05/05/21 11:20 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04033 EPA 6010D 05/05/21 11:20 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/05/21 17:38 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:20 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 lE04033 EPA 6010D 05/05/21 11:20 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 170 D ug/L 5 4.0 10 lE07022 EPA 8260D 05/07/21 15:22 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 101 % 75-125 IE07022 EPA 8260D 05107121 15:22 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 Of 49 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-2 Lab Sample ID:CE03255-02 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 14:19 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF 1,1,1-Trichloroethane [71-55-6]^ 0.12 U ug/L 1 0.12 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 U ug/L 1 0.28 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF 1,1,2-Trichloroethane [79-00-5]^ 0.14 U ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF 1,1-Dichloroethane [75-34-3]A 2.9 ug/L 1 0.13 1.0 lE07023 EPA 8260D 05/08/21 09:12 REF 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF 1,4-Dichlorobenzene [306-46-7]^ 2.4 ug/L 1 0.19 1.0 lE07023 EPA 8260D 05/08/21 09:12 REF 2-Butanone [78-93-3]^ 1.3 U ug/L 1 1.3 5.0 IE07023 EPA 8260D 05/08/21 09:12 REF 2-Hexanone [591-78-6]^ 0.88 U ug/L 1 0.88 5.0 IE07023 EPA 8260D 05/08/21 09:12 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE07023 EPA 8260D 05/08/21 09:12 REF Acetone [67-64-1]^ 10 U ug/L 1 10 20 IE07023 EPA 8260D 05/08/21 09:12 REF Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 IE07023 EPA 8260D 05/08/21 09:12 REF Benzene[71-43-2]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Bromochloromethane [74-97-5]^ 0.48 U ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Carbon disulfide [75-15-0]^ 1.5 U ug/L 1 1.5 5.0 IE07023 EPA 8260D 05/08/21 09:12 REF Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Chlorobenzene [108-90-7]A 0.69 J ug/L 1 0.17 1.0 lE07023 EPA 8260D 05/08/21 09:12 REF Chloroethane [75-00-3]^ 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF cis-1,2-Dichloroethene [156-59-2]A 5.6 ug/L 1 0.15 1.0 lE07023 EPA 8260D 05/08/21 09:12 REF cis-1,3-Dichloropropene [10061-01-5]^ 0.20 U ug/L 1 0.20 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Ethylbenzene[100-41-4]^ 0.13 U ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE07023 EPA 8260D 05/08/21 09:12 REF Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Styrene [100-42-5]^ 0.11 U ug/L 1 0.11 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Tetrachloroethene [127-18-4]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 IE07023 EPA 8260D 05/08/21 09:12 REF Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 IE07023 EPA 8260D 05/08/21 09:12 REF Vinyl chloride [75-01-4]A 1.3 ug/L 1 0.32 1.0 lE07023 EPA 8260D 05/08/21 09:12 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 Of 49 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-2 Lab Sample ID:CE03255-02 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 14:19 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: 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 lE07023 EPA 8260D 05/08/21 09:12 REF Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 47 1 50.0 94 % 53-136 IE07023 EPA 6260D 05106121 09:12 REF Dibromofluoromethane 43 1 50.0 87 % 67-129 IE07023 EPA 6260D 05106121 09:12 REF Toluene-d8 51 1 50.0 103 % 59-134 IE07023 EPA 6260D 05108121 09:12 REF 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 lE04035 EPA 6020B 05/05/21 18:23 RLF Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04033 EPA 6010D 05/05/21 11:22 JDH Barium [7440-39-3]^ 90.1 ug/L 1 1.10 10.0 lE04033 EPA 6010D 05/05/21 11:22 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04033 EPA 6010D 05/05/21 11:22 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lE04033 EPA 6010D 05/05/21 11:22 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:22 JDH Cobalt [7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:22 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lE04033 EPA 6010D 05/05/21 11:22 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04033 EPA 6010D 05/05/21 11:22 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 lE04033 EPA 6010D 05/05/21 11:22 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04033 EPA 6010D 05/05/21 11:22 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04033 EPA 6010D 05/05/21 11:22 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/05/21 17:42 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:22 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 lE04033 EPA 6010D 05/05/21 11:22 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 2.5 ug/L 1 0.80 2.0 lE07022 EPA 8260D 05/07/21 12:25 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 4.9 1 5.00 98 % 75-125 IE07022 EPA 8260D 05107121 12:25 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 49 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-3 Lab Sample ID:CE03255-03 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 13:17 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/].Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF 1,1,1-Trichloroethane [71-55-6]^ 0.12 U ug/L 1 0.12 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 U ug/L 1 0.28 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF 1,1,2-Trichloroethane [79-00-5]^ 0.14 U ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF 1,1-Dichloroethane [75-34-3]A 1.8 ug/L 1 0.13 1.0 lE07023 EPA 8260D 05/08/21 09:39 REF 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF 2-Butanone [78-93-3]^ 1.3 U ug/L 1 1.3 5.0 IE07023 EPA 8260D 05/08/21 09:39 REF 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE07023 EPA 8260D 05/08/21 09:39 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE07023 EPA 8260D 05/08/21 09:39 REF Acetone [67-64-1]^ 10 U ug/L 1 10 20 IE07023 EPA 8260D 05/08/21 09:39 REF Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 IE07023 EPA 8260D 05/08/21 09:39 REF Benzene[71-43-2]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Bromochloromethane [74-97-5]^ 0.48 U ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 IE07023 EPA 8260D 05/08/21 09:39 REF Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Chlorobenzene[108-90-7]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Ethylbenzene[100-41-4]^ 0.13 U ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE07023 EPA 8260D 05/08/21 09:39 REF Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Styrene[100-42-5]^ 0.11 U ug/L 1 0.11 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Tetrachloroethene [127-18-4]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 IE07023 EPA 8260D 05/08/21 09:39 REF Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 IE07023 EPA 8260D 05/08/21 09:39 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 Of 49 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-3 Lab Sample ID:CE03255-03 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 13:17 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: 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 lE07023 EPA 8260D 05/08/21 09:39 REF Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 95 % 53-136 IE07023 EPA 6260D 05106121 09:39 REF Dibromofluoromethane 44 1 50.0 88 % 67-129 IE07023 EPA 6260D 05106121 09:39 REF Toluene-d8 52 1 50.0 104 % 59-134 IE07023 EPA 6260D 05108121 09:39 REF 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 lE04035 EPA 6020B 05/05/21 17:46 RLF Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04033 EPA 6010D 05/05/21 11:25 JDH Barium [7440-39-3]^ 162 ug/L 1 1.10 10.0 lE04033 EPA 6010D 05/05/21 11:25 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04033 EPA 6010D 05/05/21 11:25 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lE04033 EPA 6010D 05/05/21 11:25 JDH Chromium [7440-47-3]^ 2.24 J ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:25 JDH Cobalt[7440-48-4]A 10.3 ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:25 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lE04033 EPA 6010D 05/05/21 11:25 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04033 EPA 6010D 05/05/21 11:25 JDH Nickel[7440-02-O]^ 8.30 J ug/L 1 2.20 10.0 lE04033 EPA 6010D 05/05/21 11:25 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04033 EPA 6010D 05/05/21 11:25 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04033 EPA 6010D 05/05/21 11:25 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/05/21 17:46 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:25 JDH Zinc[7440-66-6]^ 6.55 J ug/L 1 4.40 10.0 lE04033 EPA 6010D 05/05/21 11:25 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 1.0 J ug/L 1 0.80 2.0 lE06020 EPA 8260D 05/06/21 12:37 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.0 1 5.00 99 % 75-125 IE06020 EPA 8260D 05106121 12:37 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 of 49 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-4A Lab Sample ID:CE03255-04 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 11:53 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF 1,1,1-Trichloroethane [71-55-6]^ 0.12 U ug/L 1 0.12 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 U ug/L 1 0.28 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF 1,1,2-Trichloroethane [79-00-5]^ 0.14 U ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF 1,4-Dichlorobenzene [306-46-7]^ 0.66 J ug/L 1 0.19 1.0 lE07023 EPA 8260D 05/08/21 10:06 REF 2-Butanone [78-93-3]^ 1.3 U ug/L 1 1.3 5.0 IE07023 EPA 8260D 05/08/21 10:06 REF 2-Hexanone [591-78-6]^ 0.88 U ug/L 1 0.88 5.0 IE07023 EPA 8260D 05/08/21 10:06 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE07023 EPA 8260D 05/08/21 10:06 REF Acetone [67-64-1]^ 10 U ug/L 1 10 20 IE07023 EPA 8260D 05/08/21 10:06 REF Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 IE07023 EPA 8260D 05/08/21 10:06 REF Benzene[71-43-2]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Bromochloromethane [74-97-5]^ 0.48 U ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Carbon disulfide [75-15-0]^ 1.5 U ug/L 1 1.5 5.0 IE07023 EPA 8260D 05/08/21 10:06 REF Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Chlorobenzene [108-90-7]^ 1.6 ug/L 1 0.17 1.0 lE07023 EPA 8260D 05/08/21 10:06 REF Chloroethane [75-00-3]^ 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF cis-1,3-Dichloropropene [10061-01-5]^ 0.20 U ug/L 1 0.20 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Ethylbenzene[100-41-4]^ 0.13 U ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE07023 EPA 8260D 05/08/21 10:06 REF Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 IE07023 EPA 8260D 05/08/21 10:06 REF Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 IE07023 EPA 8260D 05/08/21 10:06 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 Of 49 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-4A Lab Sample ID:CE03255-04 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 11:53 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: 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 lE07023 EPA 8260D 05/08/21 10:06 REF Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 95 % 53-136 IE07023 EPA 6260D 05106121 10:06 REF Dibromofluoromethane 43 1 50.0 86 % 67-129 IE07023 EPA 6260D 05106121 10:06 REF Toluene-d8 52 1 50.0 104 % 59-134 IE07023 EPA 6260D 05108121 10:06 REF 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 lE04035 EPA 6020B 05/05/21 18:31 RLF Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04033 EPA 6010D 05/05/21 11:27 JDH Barium [7440-39-3]^ 127 ug/L 1 1.10 10.0 lE04033 EPA 6010D 05/05/21 11:27 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04033 EPA 6010D 05/05/21 11:27 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lE04033 EPA 6010D 05/05/21 11:27 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:27 JDH Cobalt [7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:27 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lE04033 EPA 6010D 05/05/21 11:27 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04033 EPA 6010D 05/05/21 11:27 JDH Nickel[7440-02-O]^ 39.1 ug/L 1 2.20 10.0 lE04033 EPA 6010D 05/05/21 11:27 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04033 EPA 6010D 05/05/21 11:27 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04033 EPA 6010D 05/05/21 11:27 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/05/21 18:31 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:27 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 lE04033 EPA 6010D 05/05/21 11:27 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 49 ug/L 1 0.80 2.0 lE06020 EPA 8260D 05/06/21 13:03 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 98 % 75-125 IE06020 EPA 8260D 05106121 13:03 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 15 of 49 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-5 Lab Sample ID:CE03255-05 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 10:55 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 IE07023 EPA 8260D 05/08/21 10:33 REF 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE07023 EPA 8260D 05/08/21 10:33 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE07023 EPA 8260D 05/08/21 10:33 REF Acetone [67-64-1]A 10 U ug/L 1 10 20 IE07023 EPA 8260D 05/08/21 10:33 REF Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 IE07023 EPA 8260D 05/08/21 10:33 REF Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 IE07023 EPA 8260D 05/08/21 10:33 REF Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Chlorobenzene[108-90-7]A 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Ethylbenzene[100-41-4]A 0.13 U ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE07023 EPA 8260D 05/08/21 10:33 REF Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 IE07023 EPA 8260D 05/08/21 10:33 REF Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 IE07023 EPA 8260D 05/08/21 10:33 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 16 Of 49 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-5 Lab Sample ID:CE03255-05 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 10:55 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: 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 lE07023 EPA 8260D 05/08/21 10:33 REF Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 47 1 50.0 94 % 53-136 IE07023 EPA 6260D 05106121 10:33 REF Dibromofluoromethane 43 1 50.0 86 % 67-129 IE07023 EPA 6260D 05106121 10:33 REF Toluene-d8 52 1 50.0 104 % 59-134 IE07023 EPA 6260D 05108121 10:33 REF 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 lE04035 EPA 6020B 05/06/21 11:38 RLF Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04033 EPA 6010D 05/05/21 11:29 JDH Barium [7440-39-3]^ 72.4 ug/L 1 1.10 10.0 lE04033 EPA 6010D 05/05/21 11:29 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04033 EPA 6010D 05/05/21 11:29 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lE04033 EPA 6010D 05/05/21 11:29 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:29 JDH Cobalt[7440-48-4]^ 4.32 J ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:29 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lE04033 EPA 6010D 05/05/21 11:29 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04033 EPA 6010D 05/05/21 11:29 JDH Nickel[7440-02-O]^ 3.23 J ug/L 1 2.20 10.0 lE04033 EPA 6010D 05/05/21 11:29 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04033 EPA 6010D 05/05/21 11:29 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04033 EPA 6010D 05/05/21 11:29 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/06/21 11:38 RLF Vanadium [7440-62-2]^ 3.81 J ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:29 JDH Zinc[7440-66-6]^ 5.17 J ug/L 1 4.40 10.0 lE04033 EPA 6010D 05/05/21 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 Ay Notes 1,4-Dioxane [123-91-1]^ 1.5 J ug/L 1 0.80 2.0 lE07022 EPA 8260D 05/07/21 12:50 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.1 1 5.00 102 % 75-125 IE07022 EPA 8260D 05107121 12:50 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 17 of 49 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-6 Lab Sample ID:CE03255-06 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 15:30 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 IE06036 EPA 8260D 05/07/21 08:48 REF 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE06036 EPA 8260D 05/07/21 08:48 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE06036 EPA 8260D 05/07/21 08:48 REF Acetone [67-64-1]A 10 U ug/L 1 10 20 IE06036 EPA 8260D 05/07/21 08:48 REF Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 IE06036 EPA 8260D 05/07/21 08:48 REF Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 IE06036 EPA 8260D 05/07/21 08:48 REF Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Chlorobenzene[108-90-7]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Ethylbenzene[100-41-4]A 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE06036 EPA 8260D 05/07/21 08:48 REF Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Styrene[100-42-5]A 0.11 U ug/L 1 0.11 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 IE06036 EPA 8260D 05/07/21 08:48 REF Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 IE06036 EPA 8260D 05/07/21 08:48 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 18 Of 49 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-6 Lab Sample ID:CE03255-06 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 15:30 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: 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 lE06036 EPA 8260D 05/07/21 08:48 REF Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 47 1 50.0 93 % 53-136 IE06036 EPA 6260D 05107121 08:48 REF Dibromofluoromethane 42 1 50.0 85 % 67-129 IE06036 EPA 6260D 05107121 08:48 REF Toluene-d8 51 1 50.0 102 % 59-134 IE06036 EPA 6260D 05107121 08:48 REF 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 lE04035 EPA 6020B 05/06/21 11:42 RLF Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04033 EPA 6010D 05/05/21 11:32 JDH Barium [7440-39-3]^ 59.2 ug/L 1 1.10 10.0 lE04033 EPA 6010D 05/05/21 11:32 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04033 EPA 6010D 05/05/21 11:32 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lE04033 EPA 6010D 05/05/21 11:32 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:32 JDH Cobalt[7440-48-4]^ 2.06 J ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:32 JDH Copper[7440-50-8]^ 10.3 ug/L 1 1.60 10.0 lE04033 EPA 6010D 05/05/21 11:32 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04033 EPA 6010D 05/05/21 11:32 JDH Nickel[7440-02-O]^ 4.07 J ug/L 1 2.20 10.0 lE04033 EPA 6010D 05/05/21 11:32 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04033 EPA 6010D 05/05/21 11:32 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04033 EPA 6010D 05/05/21 11:32 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/06/21 11:42 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:32 JDH Zinc[7440-66-6]^ 18.9 ug/L 1 4.40 10.0 lE04033 EPA 6010D 05/05/21 11:32 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 14 ug/L 1 0.80 2.0 lE06020 EPA 8260D 05/06/21 13:54 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 99 % 75-125 IE06020 EPA 8260D 05106121 13:54 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 19 of 49 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-7 Lab Sample ID:CE03255-07 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/29/21 11:16 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/].Tejeda-Torre: 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 IE10018 EPA 8260D 05/10/21 22:07 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY 1,1-Dichloroethane [75-34-3]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY 1,1-Dichloroethene [75-35-4]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY 1,2,3-Trichloropropane [96-18-4]A 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 u ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY 1,2-Dibromoethane [106-93-4]A 0.66 u ug/L 1 0.66 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY 1,2-Dichlorobenzene [95-50-1]A 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY 1,2-Dichloroethane [107-06-2]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY 1,2-Dichloropropane [78-87-5]A 0.10 u ug/L 1 0.10 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY 1,4-Dichlorobenzene [106-46-7]A 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 IE10018 EPA 8260D 05/10/21 22:07 RKY QL-02, QV-01 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE10018 EPA 8260D 05/10/21 22:07 RKY 4-Methyl-2-pentanone [108-10-1]A 1.1 U ug/L 1 1.1 5.0 IE10018 EPA 8260D 05/10/21 22:07 RKY QV-01 Acetone[67-64-1]A 10 U ug/L 1 10 20 IE10018 EPA 8260D 05/10/21 22:07 RKY Acrylonitrile [107-13-1]A 3.5 u ug/L 1 3.5 10 1E10018 EPA 8260D 05/10/21 22:07 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Bromodichloromethane [75-27-4]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Bromoform [75-25-2]A 0.22 U ug/L 1 0.22 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY QV-01 Chloroform [67-66-3]A 0.18 u ug/L 1 0.18 1.0 1E10018 EPA 8260D 05/10/21 22:07 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY cis-1,2-Dichloroethene [156-59-2]A 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Iodomethane [74-88-4]A 1.7 U ug/L 1 1.7 5.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Tetrahydrofuran [109-99-9]A 0.53 u ug/L 1 0.53 1.0 1E10018 EPA 8260D 05/10/21 22:07 RKY Toluene [108-88-3]A 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY trans-1,2-Dichloroethene [156-60-5]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY trans-1,3-Dichloropropene [10061-02-6]A 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Trichloroethene [79-01-6]A 0.15 U ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Trichlorofluoromethane [75-69-4]A 0.24 U ug/L 1 0.24 1.0 IE10018 EPA 8260D 05/10/21 22:07 RKY Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 IE10018 EPA 8260D 05/10/21 22:07 RKY QV-01 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 20 Of 49 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-7 Lab Sample ID:CE03255-07 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/29/21 11:16 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 lE10018 EPA 8260D 05/10/21 22:07 RKY Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 lE10018 EPA 8260D 05/10/21 22:07 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 53 1 50.0 106 % 53-136 IE10018 EPA 8260D 05110121 22:07 RKY Dibromofluoromethane 50 1 50.0 100 % 67-129 IE10018 EPA 8260D 05110121 22:07 RKY Toluene-d8 52 1 50.0 105 % 59-134 IE10018 EPA 8260D 05110121 22:07 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 lE04035 EPA 6020B 05/06/21 11:46 RLF Arsenic [7440-38-2]^ 7.60 u ug/L 1 7.60 10.0 lE04033 EPA 6010D 05/05/21 11:34 JDH Barium [7440-39-3]^ 34.9 ug/L 1 1.10 10.0 lE04033 EPA 6010D 05/05/21 11:34 JDH Beryllium [7440-41-7]^ 0.160 u ug/L 1 0.160 1.00 lE04033 EPA 6010D 05/05/21 11:34 JDH Cadmium [7440-43-9]^ 0.360 u ug/L 1 0.360 1.00 lE04033 EPA 6010D 05/05/21 11:34 JDH Chromium [7440-47-3]^ 1.40 u ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:34 JDH Cobalt [7440-48-4]^ 1.40 u ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:34 JDH Copper[7440-50-8]^ 1.60 u ug/L 1 1.60 10.0 lE04033 EPA 6010D 05/05/21 11:34 JDH Lead [7439-92-1]^ 3.10 u ug/L 1 3.10 10.0 lE04033 EPA 6010D 05/05/21 11:34 JDH Nickel[7440-02-0]^ 2.20 u ug/L 1 2.20 10.0 lE04033 EPA 6010D 05/05/21 11:34 JDH Selenium [7782-49-2]^ 6.20 u ug/L 1 6.20 10.0 lE04033 EPA 6010D 05/05/21 11:34 JDH Silver [7440-22-4]^ 1.90 u ug/L 1 1.90 10.0 lE04033 EPA 6010D 05/05/21 11:34 JDH Thallium [7440-28-0]^ 0.220 u ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/06/21 11:46 RLF Vanadium [7440-62-2]^ 1.40 u ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:34 JDH Zinc [7440-66-6]^ 4.40 u ug/L 1 4.40 10.0 lE04033 EPA 6010D 05/05/21 11:34 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 7.0 ug/L 1 0.80 2.0 lE06020 EPA 8260D 05/06/21 14:19 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.2 1 5.00 104 % 75-125 lEO6020 EPA 8260D 05106121 14:19 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 21 of 49 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-713 Lab Sample ID:CE03255-08 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/29/21 11:59 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/].Tejeda-Torre: 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]^ 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY 1,1-Dichloroethane [75-34-3]A 1.5 ug/L 1 0.13 1.0 lE10018 EPA 8260D 05/10/21 22:35 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY 1,2-Dichloroethane [507-06-2]^ 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 IE10018 EPA 8260D 05/10/21 22:35 RKY QL-02, QV-01 2-Hexanone [591-78-6]^ 0.88 U ug/L 1 0.88 5.0 IE10018 EPA 8260D 05/10/21 22:35 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE10018 EPA 8260D 05/10/21 22:35 RKY QV-01 Acetone[67-64-1]^ 10 U ug/L 1 10 20 IE10018 EPA 8260D 05/10/21 22:35 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 IE10018 EPA 8260D 05/10/21 22:35 RKY QV-01 Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Carbon disulfide [75-15-0]^ 1.5 u ug/L 1 1.5 5.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Chlorobenzene[108-90-7]^ 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY QV-01 Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 1E10018 EPA 8260D 05/10/21 22:35 RKY Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Ethylbenzene [500-41-4]^ 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Styrene[100-42-5]^ 0.11 u ug/L 1 0.11 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 IE10018 EPA 8260D 05/10/21 22:35 RKY Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 IE10018 EPA 8260D 05/10/21 22:35 RKY QV-01 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 22 Of 49 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-713 Lab Sample ID:CE03255-08 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/29/21 11:59 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: 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 Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 lE10018 EPA 8260D 05/10/21 22:35 RKY Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 lE10018 EPA 8260D 05/10/21 22:35 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 53 1 50.0 105 % 53-136 IE10018 EPA 8260D 05110121 22:35 RKY Dibromofluoromethane 52 1 50.0 104 % 67-129 IE10018 EPA 8260D 05110121 22:35 RKY Toluene-d8 54 1 50.0 108 % 59-134 IE10018 EPA 8260D 05110121 22:35 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 lE04035 EPA 6020B 05/06/21 11:51 RLF Arsenic [7440-38-2]^ 7.60 u ug/L 1 7.60 10.0 lE04033 EPA 6010D 05/05/21 11:37 JDH Barium [7440-39-3]^ 38.0 ug/L 1 1.10 10.0 lE04033 EPA 6010D 05/05/21 11:37 JDH Beryllium [7440-41-7]^ 0.160 u ug/L 1 0.160 1.00 lE04033 EPA 6010D 05/05/21 11:37 JDH Cadmium [7440-43-9]^ 0.360 u ug/L 1 0.360 1.00 lE04033 EPA 6010D 05/05/21 11:37 JDH Chromium [7440-47-3]^ 1.40 u ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:37 JDH Cobalt [7440-48-4]^ 1.40 u ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:37 JDH Copper[7440-50-8]^ 1.60 u ug/L 1 1.60 10.0 lE04033 EPA 6010D 05/05/21 11:37 JDH Lead [7439-92-1]^ 3.10 u ug/L 1 3.10 10.0 lE04033 EPA 6010D 05/05/21 11:37 JDH Nickel[7440-02-0]^ 2.20 u ug/L 1 2.20 10.0 lE04033 EPA 6010D 05/05/21 11:37 JDH Selenium [7782-49-2]^ 6.20 u ug/L 1 6.20 10.0 lE04033 EPA 6010D 05/05/21 11:37 JDH Silver [7440-22-4]^ 1.90 u ug/L 1 1.90 10.0 lE04033 EPA 6010D 05/05/21 11:37 JDH Thallium [7440-28-0]^ 0.220 u ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/06/21 11:51 RLF Vanadium [7440-62-2]^ 1.40 u ug/L 1 1.40 10.0 lE04033 EPA 6010D 05/05/21 11:37 JDH Zinc [7440-66-6]^ 4.40 u ug/L 1 4.40 10.0 lE04033 EPA 6010D 05/05/21 11:37 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]^ 1.4 J ug/L 1 0.80 2.0 lE07022 EPA 8260D 05/07/21 13:16 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.0 1 5.00 99 % 75-125 IE07022 EPA 8260D 05107121 13:16 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 23 of 49 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-8 Lab Sample ID:CE03255-09 Received: 04/30/21 13:50 Matrix: Ground Water Sampled: 04/29/2109:36 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: 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]^ 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 1,1-Dichloroethane [75-34-3]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 1,1-Dichloroethene [75-35-4]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 1,2,3-Trichloropropane [96-18-4]A 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 u ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 1,2-Dibromoethane [106-93-4]A 0.66 u ug/L 1 0.66 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 1,2-Dichlorobenzene [95-50-1]A 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 1,2-Dichloroethane [107-06-2]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 1,2-Dichloropropane [78-87-5]A 0.10 u ug/L 1 0.10 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 1,4-Dichlorobenzene [106-46-7]A 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 IE10018 EPA 8260D 05/10/21 23:03 RKY QL-02, QV-01 2-Hexanone [591-78-6]^ 0.88 U ug/L 1 0.88 5.0 IE10018 EPA 8260D 05/10/21 23:03 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE10018 EPA 8260D 05/10/21 23:03 RKY QV-01 Acetone[67-64-1]^ 10 U ug/L 1 10 20 IE10018 EPA 8260D 05/10/21 23:03 RKY Acrylonitrile [107-13-1]A 3.5 U ug/L 1 3.5 10 IE10018 EPA 8260D 05/10/21 23:03 RKY QV-01 Benzene [71-43-2]^ 0.62 J ug/L 1 0.15 1.0 1E10018 EPA 8260D 05/10/21 23:03 RKY Bromochloromethane [74-97-5]^ 0.48 U ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Bromodichloromethane [75-27-4]A 0.17 U ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Carbon disulfide [75-15-0]^ 1.5 U ug/L 1 1.5 5.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Chlorobenzene [108-90-7]1 1.9 ug/L 1 0.17 1.0 1E10018 EPA 8260D 05/10/21 23:03 RKY Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY QV-01 Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 1E10018 EPA 8260D 05/10/21 23:03 RKY Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY cis-1,2-Dichloroethene [156-59-2]A 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Ethylbenzene[100-41-4]^ 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Styrene[100-42-5]^ 0.11 u ug/L 1 0.11 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Toluene [108-88-3]A 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY trans-1,2-Dichloroethene [156-60-5]A 0.21 U ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Trichlorofluoromethane [75-69-4]A 0.24 U ug/L 1 0.24 1.0 IE10018 EPA 8260D 05/10/21 23:03 RKY Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 IE10018 EPA 8260D 05/10/21 23:03 RKY QV-01 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 24 Of 49 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-8 Lab Sample ID:CE03255-09 Received: 04/30/21 13:50 Matrix: Ground Water Sampled: 04/29/2109:36 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: 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 Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 lE10018 EPA 8260D 05/10/21 23:03 RKY Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 lE10018 EPA 8260D 05/10/21 23:03 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 53 1 50.0 107 % 53-136 IE10018 EPA 8260D 05110121 23:03 RKY Dibromofluoromethane 49 1 50.0 97 % 67-129 IE10018 EPA 8260D 05110121 23:03 RKY Toluene-d8 54 1 50.0 108 % 59-134 IE10018 EPA 8260D 05110121 23:03 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 lE04035 EPA 6020B 05/06/21 11:55 RLF Arsenic[7440-38-2]^ 7.60 u ug/L 1 7.60 10.0 lE04034 EPA 6010D 05/05/21 13:04 JDH Barium [7440-39-3]^ 192 ug/L 1 1.10 10.0 lE04034 EPA 6010D 05/05/21 13:04 JDH Beryllium [7440-41-7]^ 0.160 u ug/L 1 0.160 1.00 lE04034 EPA 6010D 05/05/21 13:04 JDH Cadmium [7440-43-9]^ 0.360 u ug/L 1 0.360 1.00 lE04034 EPA 6010D 05/05/21 13:04 JDH Chromium [7440-47-3]^ 1.40 u ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:04 JDH Cobalt[7440-48-4]^ 6.54 J ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:04 JDH Copper[7440-50-8]^ 1.60 u ug/L 1 1.60 10.0 lE04034 EPA 6010D 05/05/21 13:04 JDH Lead [7439-92-1]^ 3.10 u ug/L 1 3.10 10.0 lE04034 EPA 6010D 05/05/21 13:04 JDH Nickel[7440-02-O]^ 122 ug/L 1 2.20 10.0 lE04034 EPA 6010D 05/05/21 13:04 JDH Selenium [7782-49-2]^ 6.20 u ug/L 1 6.20 10.0 lE04034 EPA 6010D 05/05/21 13:04 JDH Silver [7440-22-4]^ 1.90 u ug/L 1 1.90 10.0 lE04034 EPA 6010D 05/05/21 13:04 JDH Thallium [7440-28-0]^ 0.220 u ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/06/21 11:55 RLF Vanadium [7440-62-2]^ 1.40 u ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:04 JDH Zinc [7440-66-6]^ 4.40 u ug/L 1 4.40 10.0 lE04034 EPA 6010D 05/05/21 13:04 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]^ 340 D ug/L 10 8.0 20 lE07022 EPA 8260D 05/07/21 15:48 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 99 % 75-125 IE07022 EPA 8260D 05107121 15:48 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 25 of 49 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-12 Lab Sample ID:CE03255-10 Received: 04/30/21 13:50 Matrix: Ground Water Sampled: 04/29/2108:40 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/].Tejeda-Torre: 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 IE10018 EPA 8260D 05/10/21 23:31 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY 1,1-Dichloroethane [75-34-3]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY 1,1-Dichloroethene [75-35-4]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY 1,2,3-Trichloropropane [96-18-4]A 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 u ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY 1,2-Dibromoethane [106-93-4]A 0.66 u ug/L 1 0.66 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY 1,2-Dichlorobenzene [95-50-1]A 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY 1,2-Dichloroethane [107-06-2]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY 1,2-Dichloropropane [78-87-5]A 0.10 u ug/L 1 0.10 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY 1,4-Dichlorobenzene [106-46-7]A 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 IE10018 EPA 8260D 05/10/21 23:31 RKY QL-02, QV-01 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE10018 EPA 8260D 05/10/21 23:31 RKY 4-Methyl-2-pentanone [108-10-1]A 1.1 U ug/L 1 1.1 5.0 IE10018 EPA 8260D 05/10/21 23:31 RKY QV-01 Acetone[67-64-1]A 10 U ug/L 1 10 20 IE10018 EPA 8260D 05/10/21 23:31 RKY Acrylonitrile [107-13-1]A 3.5 u ug/L 1 3.5 10 IE10018 EPA 8260D 05/10/21 23:31 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Bromodichloromethane [75-27-4]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Bromoform [75-25-2]A 0.22 U ug/L 1 0.22 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY QV-01 Chloroform [67-66-3]A 0.18 u ug/L 1 0.18 1.0 1E10018 EPA 8260D 05/10/21 23:31 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY cis-1,2-Dichloroethene [156-59-2]A 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Iodomethane [74-88-4]A 1.7 U ug/L 1 1.7 5.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Tetrahydrofuran [109-99-9]A 0.53 u ug/L 1 0.53 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Toluene [108-88-3]A 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY trans-1,2-Dichloroethene [156-60-5]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY trans-1,3-Dichloropropene [10061-02-6]A 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Trichloroethene [79-01-6]A 0.15 U ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Trichlorofluoromethane [75-69-4]A 0.24 U ug/L 1 0.24 1.0 IE10018 EPA 8260D 05/10/21 23:31 RKY Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 IE10018 EPA 8260D 05/10/21 23:31 RKY QV-01 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 26 Of 49 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-12 Lab Sample ID:CE03255-10 Received: 04/30/21 13:50 Matrix: Ground Water Sampled: 04/29/2108:40 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: 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 Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 lE10018 EPA 8260D 05/10/21 23:31 RKY Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 lE10018 EPA 8260D 05/10/21 23:31 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 52 1 50.0 104 % 53-136 IE10018 EPA 8260D 05110121 23:31 RKY Dibromofluoromethane 50 1 50.0 101 % 67-129 IE10018 EPA 8260D 05110121 23:31 RKY Toluene-d8 55 1 50.0 110 % 59-134 IE10018 EPA 8260D 05110121 23:31 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 lE04035 EPA 6020B 05/06/21 11:59 RLF Arsenic[7440-38-2]^ 7.60 u ug/L 1 7.60 10.0 lE04034 EPA 6010D 05/05/21 13:29 JDH Barium [7440-39-3]^ 233 ug/L 1 1.10 10.0 lE04034 EPA 6010D 05/05/21 13:29 JDH Beryllium [7440-41-7]^ 0.160 u ug/L 1 0.160 1.00 lE04034 EPA 6010D 05/05/21 13:29 JDH Cadmium [7440-43-9]^ 0.360 u ug/L 1 0.360 1.00 lE04034 EPA 6010D 05/05/21 13:29 JDH Chromium [7440-47-3]^ 1.40 u ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:29 JDH Cobalt[7440-48-4]^ 5.31 J ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:29 JDH Copper[7440-50-8]^ 1.60 u ug/L 1 1.60 10.0 lE04034 EPA 6010D 05/05/21 13:29 JDH Lead [7439-92-1]^ 3.10 u ug/L 1 3.10 10.0 lE04034 EPA 6010D 05/05/21 13:29 JDH Nickel[7440-02-O]^ 10.9 ug/L 1 2.20 10.0 lE04034 EPA 6010D 05/05/21 13:29 JDH Selenium [7782-49-2]^ 6.20 u ug/L 1 6.20 10.0 lE04034 EPA 6010D 05/05/21 13:29 JDH Silver [7440-22-4]^ 1.90 u ug/L 1 1.90 10.0 lE04034 EPA 6010D 05/05/21 13:29 JDH Thallium [7440-28-0]^ 0.220 u ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/06/21 11:59 RLF Vanadium [7440-62-2]^ 1.40 u ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:29 JDH Zinc[7440-66-6]^ 20.6 ug/L 1 4.40 10.0 lE04034 EPA 6010D 05/05/21 13:29 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]^ 3.6 ug/L 1 0.80 2.0 lE07022 EPA 8260D 05/07/21 13:41 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 99 % 75-125 IE07022 EPA 8260D 05107121 13:41 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 27 of 49 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW-14 Lab Sample ID:CE03255-11 Received: 04/30/21 13:50 Matrix: Ground Water Sampled: 04/28/2109:04 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 IE06036 EPA 8260D 05/07/21 09:15 REF 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE06036 EPA 8260D 05/07/21 09:15 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE06036 EPA 8260D 05/07/21 09:15 REF Acetone [67-64-1]A 10 U ug/L 1 10 20 IE06036 EPA 8260D 05/07/21 09:15 REF Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 IE06036 EPA 8260D 05/07/21 09:15 REF Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 IE06036 EPA 8260D 05/07/21 09:15 REF Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Chlorobenzene[108-90-7]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Ethylbenzene[100-41-4]A 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE06036 EPA 8260D 05/07/21 09:15 REF Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 IE06036 EPA 8260D 05/07/21 09:15 REF Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 IE06036 EPA 8260D 05/07/21 09:15 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 28 of 49 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW-14 Lab Sample ID:CE03255-11 Received: 04/30/21 13:50 Matrix: Ground Water Sampled: 04/28/2109:04 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: 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 lE06036 EPA 8260D 05/07/21 09:15 REF Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 95 % 53-136 IE06036 EPA 6260D 05107121 09:15 REF Dibromofluoromethane 43 1 50.0 85 % 67-129 IE06036 EPA 6260D 05107121 09:15 REF Toluene-d8 51 1 50.0 102 % 59-134 IE06036 EPA 6260D 05107121 09:15 REF 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 lE04035 EPA 6020B 05/06/21 12:47 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04034 EPA 6010D 05/05/21 13:31 JDH Barium [7440-39-3]^ 10.7 ug/L 1 1.10 10.0 lE04034 EPA 6010D 05/05/21 13:31 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04034 EPA 6010D 05/05/21 13:31 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lE04034 EPA 6010D 05/05/21 13:31 JDH Chromium [7440-47-3]^ 2.26 J ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:31 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:31 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lE04034 EPA 6010D 05/05/21 13:31 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04034 EPA 6010D 05/05/21 13:31 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 lE04034 EPA 6010D 05/05/21 13:31 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04034 EPA 6010D 05/05/21 13:31 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04034 EPA 6010D 05/05/21 13:31 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/06/21 12:47 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:31 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 lE04034 EPA 6010D 05/05/21 13:31 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 lE06020 EPA 8260D 05/06/21 16:01 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 98 % 75-125 IE06020 EPA 8260D 05106121 16:01 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 49 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-Duplicate II Lab Sample ID:CE03255-12 Received: 04/30/21 13:50 Matrix: Ground Water Sampled: 04/28/2100:00 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 IE06036 EPA 8260D 05/07/21 09:42 REF 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE06036 EPA 8260D 05/07/21 09:42 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE06036 EPA 8260D 05/07/21 09:42 REF Acetone [67-64-1]A 10 U ug/L 1 10 20 IE06036 EPA 8260D 05/07/21 09:42 REF Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 IE06036 EPA 8260D 05/07/21 09:42 REF Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 IE06036 EPA 8260D 05/07/21 09:42 REF Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Chlorobenzene[108-90-7]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Ethylbenzene[100-41-4]A 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE06036 EPA 8260D 05/07/21 09:42 REF Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Styrene[100-42-5]A 0.11 U ug/L 1 0.11 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 IE06036 EPA 8260D 05/07/21 09:42 REF Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 IE06036 EPA 8260D 05/07/21 09:42 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 30 Of 49 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-Duplicate II Lab Sample ID:CE03255-12 Received: 04/30/21 13:50 Matrix: Ground Water Sampled: 04/28/2100:00 Work Order: CE03255 Project: White Street LF-Phase II Sampled By:T. Martinez/J.Tejeda-Torre: 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 lE06036 EPA 8260D 05/07/21 09:42 REF Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 95 % 53-136 IE06036 EPA 6260D 05107121 09:42 REF Dibromofluoromethane 43 1 50.0 86 % 67-129 IE06036 EPA 6260D 05107121 09:42 REF Toluene-d8 52 1 50.0 104 % 59-134 IE06036 EPA 6260D 05107121 09:42 REF 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 lE04035 EPA 6020B 05/06/21 12:51 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04034 EPA 6010D 05/05/21 13:34 JDH Barium [7440-39-3]^ 54.3 ug/L 1 1.10 10.0 lE04034 EPA 6010D 05/05/21 13:34 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04034 EPA 6010D 05/05/21 13:34 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lE04034 EPA 6010D 05/05/21 13:34 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:34 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:34 JDH Copper[7440-50-8]^ 9.10 J ug/L 1 1.60 10.0 lE04034 EPA 6010D 05/05/21 13:34 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04034 EPA 6010D 05/05/21 13:34 JDH Nickel[7440-02-O]^ 3.03 J ug/L 1 2.20 10.0 lE04034 EPA 6010D 05/05/21 13:34 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04034 EPA 6010D 05/05/21 13:34 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04034 EPA 6010D 05/05/21 13:34 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/06/21 12:51 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:34 JDH Zinc[7440-66-6]^ 17.8 ug/L 1 4.40 10.0 lE04034 EPA 6010D 05/05/21 13:34 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 13 ug/L 1 0.80 2.0 lE06020 EPA 8260D 05/06/21 16:26 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.2 1 5.00 105 % 75-125 IE06020 EPA 8260D 05106121 16:26 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 31 of 49 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103-Trip Blank II Lab Sample ID:CE03255-13 Received: 04/30/21 13:50 Matrix: Water Sampled: 04/28/2109:04 Work Order: CE03255 Project: White Street LF-Phase II 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 Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 IE06036 EPA 8260D 05/07/21 10:09 REF 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE06036 EPA 8260D 05/07/21 10:09 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE06036 EPA 8260D 05/07/21 10:09 REF Acetone [67-64-1]A 10 U ug/L 1 10 20 IE06036 EPA 8260D 05/07/21 10:09 REF Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 IE06036 EPA 8260D 05/07/21 10:09 REF Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 IE06036 EPA 8260D 05/07/21 10:09 REF Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Chlorobenzene[108-90-7]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Ethylbenzene[100-41-4]A 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE06036 EPA 8260D 05/07/21 10:09 REF Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 IE06036 EPA 8260D 05/07/21 10:09 REF Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 IE06036 EPA 8260D 05/07/21 10:09 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 32 Of 49 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-Trip Blank II Lab Sample ID:CE03255-13 Received: 04/30/21 13:50 Matrix: Water Sampled: 04/28/2109:04 Work Order: CE03255 Project: White Street LF-Phase II 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 Ay Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 lE06036 EPA 8260D 05/07/21 10:09 REF Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 47 1 50.0 93 % 53-136 IE06036 EPA 6260D 05107121 10:09 REF Dibromofluoromethane 43 1 50.0 87 % 67-129 IE06036 EPA 6260D 05107121 10:09 REF Toluene-d8 51 1 50.0 102 % 59-134 IE06036 EPA 6260D 05107121 10:09 REF 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 lE07022 EPA 8260D 05/07/21 11:59 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 100 % 75-125 lEO7022 EPA 8260D 05107121 11:59 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 33 Of 49 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE06036 - EPA 5030E MS Blank (3E06036-BLK1) Prepared: 05/06/2021 15:57 Analyzed: 05/07/2021 06:56 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Tetrahydrofuran 0.53 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 48 u9/L 50.0 96 53-136 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 34 Of 49 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE06036 - EPA 5030E MS - Continued (� �Eo www.encolabs.com Blank (SE06036-BLK3) Continued Prepared: 05/06/2021 15:57 Analyzed: 05/07/2021 06:56 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Dibromofluoromethane 44 u91L 50.0 67 67-129 Toluene-& 51 u91L 50.0 103 59-134 LCS (3E06036-BS1) Prepared: 05/06/2021 15:57 Analyzed: 05/07/2021 05:03 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 90 75-133 Benzene 19 1.0 ug/L 20.0 93 80-134 Chlorobenzene 20 1.0 ug/L 20.0 100 80-120 Toluene 18 1.0 ug/L 20.0 92 71-120 Trichloroethene 20 1.0 ug/L 20.0 101 74-120 Matrix Spike (3E06036-MS1) Prepared: 05/06/2021 15:57 Analyzed: 05/07/2021 05:30 Source: CE06773-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 18 1.0 ug/L 20.0 0.21 U 90 75-133 Benzene 19 1.0 ug/L 20.0 0.15 U 96 80-134 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 102 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 93 71-120 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 105 74-120 Matrix Spike Dup (3E06036-MSD1) Prepared: 05/06/2021 15:57 Analyzed: 05/07/2021 05:57 Source: CE06773-01 Analvte 1,1-Dichloroethene Benzene Chlorobenzene Toluene Trichloroethene Batch IE07023 - EPA 5030E MS Result 17 18 19 18 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 85 90 97 88 100 %REC Limits 75-133 80-134 80-120 71-120 74-120 RPD 6 6 5 6 4 RPD Limit Notes 20 17 16 17 22 Blank (3E07023-BLK3) Prepared: 05/07/2021 14:18 Analyzed: 05/08/2021 07:24 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 35 Of 49 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE07023 - EPA 5030E MS - Continued Blank (SE07023-BLK1) Continued Prepared: 05/07/2021 14:18 Analyzed: 05/08/2021 07:24 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 94 53-136 Dibromofluoromethane 43 u91L 50.0 86 67-129 Toluene-d8 52 u91L 50.0 103 59-134 LCS (lE07023-BS1) Prepared: 05/07/2021 14:18 Analyzed: 05/08/2021 05:36 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 18 1.0 ug/L 20.0 92 80-134 Chlorobenzene 20 1.0 ug/L 20.0 100 80-120 Toluene 18 1.0 ug/L 20.0 92 71-120 Trichloroethene 20 1.0 ug/L 20.0 101 74-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 36 of 49 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE07023 - EPA 5030E MS - Continued Matrix Spike (3E07023-MS3) Prepared: 05/07/2021 14:18 Analyzed: 05/08/2021 06:03 Source: CE06773-02 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 93 75-133 Benzene 20 1.0 ug/L 20.0 0.15 U 102 80-134 Chlorobenzene 22 1.0 ug/L 20.0 0.17 U 109 80-120 Toluene 20 1.0 ug/L 20.0 0.14 U 102 71-120 Trichloroethene 22 1.0 ug/L 20.0 0.15 U 110 74-120 Matrix Spike Dup (1E07023-MSD1) Prepared: 05/07/2021 14:18 Analyzed: 05/08/2021 06:30 Source: CE06773-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 16 1.0 ug/L 20.0 0.21 U 78 75-133 17 20 Benzene 17 1.0 ug/L 20.0 0.15 U 87 80-134 16 17 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 93 80-120 16 16 Toluene 17 1.0 ug/L 20.0 0.14 U 86 71-120 16 17 Trichloroethene 19 1.0 ug/L 20.0 0.15 U 95 74-120 15 22 Batch 1E10018 - EPA 50308 MS Blank (1E10018-BLK3) Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 16:28 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 Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 37 Of 49 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE10018 - EPA 5030E MS - Continued (� �Eo www.encolabs.com Blank (SE30018-BLK1) Continued Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 16:28 Analvte Result Flaq POL Units 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 RPD Level Result %REC Limits RPD Limit Notes 4-Bromofluorobenzene 54 u91L 50.0 107 53-136 Dibromofluoromethane 50 u91L 50.0 99 67-129 Toluene-d8 53 u91L 50.0 106 59-134 LCS (1E10018-BS1) Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 14:36 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 108 75-133 Benzene 23 1.0 ug/L 20.0 114 80-134 Chlorobenzene 21 1.0 ug/L 20.0 103 80-120 Toluene 21 1.0 ug/L 20.0 104 71-120 Trichloroethene 22 1.0 ug/L 20.0 110 74-120 Matrix Spike (3E30018-MS1) Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 15:04 Source: CE06773-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 24 1.0 ug/L 20.0 0.21 U 122 75-133 Benzene 25 1.0 ug/L 20.0 0.15 U 126 80-134 Chlorobenzene 23 1.0 ug/L 20.0 0.17 U 116 80-120 Toluene 23 1.0 ug/L 20.0 0.14 U 116 71-120 Trichloroethene 24 1.0 ug/L 20.0 0.15 U 119 74-120 Matrix Spike Dup (3E10018-MSD1) Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 15:32 Source: CE06773-07 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 99 75-133 20 20 Benzene 21 1.0 ug/L 20.0 0.15 U 104 80-134 19 17 QM-11 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 98 80-120 17 16 QM-11 Toluene 20 1.0 ug/L 20.0 0.14 U 98 71-120 17 17 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 38 of 49 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE10018 - EPA 5030E MS - Continued (� �Eo www.encolabs.com Matrix Spike Dup (1E10018-MSDS) Continued Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 15:32 Source: CE06773-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Trichloroethene 21 1.0 ug/L 20.0 0.15 U 103 74-120 15 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE04033 - EPA 3005A Blank (1E04033-BLK1) Prepared: 05/04/2021 13:28 Analyzed: 05/05/2021 10:46 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 (lE04033-BS1) Prepared: 05/04/2021 13:28 Analyzed: 05/05/2021 10:53 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 201 10.0 ug/L 200 101 80-120 Barium 213 10.0 ug/L 200 106 80-120 Beryllium 20.3 1.00 ug/L 20.0 101 80-120 Cadmium 21.0 1.00 ug/L 20.0 105 80-120 Chromium 203 10.0 ug/L 200 102 80-120 Cobalt 206 10.0 ug/L 200 103 80-120 Copper 202 10.0 ug/L 200 101 80-120 Lead 206 10.0 ug/L 200 103 80-120 Nickel 212 10.0 ug/L 200 106 80-120 Selenium 207 10.0 ug/L 200 104 80-120 Silver 206 10.0 ug/L 200 103 80-120 Vanadium 200 10.0 ug/L 200 100 80-120 Zinc 212 10.0 ug/L 200 106 80-120 Matrix Spike (1E04033-MS3) Prepared: 05/04/2021 13:28 Analyzed: 05/05/2021 10:56 Source: CE03252-01 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 85 75-125 Barium 877 10.0 ug/L 200 657 110 75-125 Beryllium 20.4 1.00 ug/L 20.0 0.160 U 102 75-125 Cadmium 17.5 1.00 ug/L 20.0 0.360 U 88 75-125 Chromium 202 10.0 ug/L 200 2.55 100 75-125 Cobalt 213 10.0 ug/L 200 13.7 100 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 39 Of 49 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE04033 - EPA 3005A - Continued Matrix Spike (1E04033-MS3) Continued Prepared: 05/04/2021 13:28 Analyzed: 05/05/2021 10:56 Source: CE03252-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 171 10.0 ug/L 200 1.60 U 85 75-125 Lead 201 10.0 ug/L 200 3.10 U 100 75-125 Nickel 236 10.0 ug/L 200 33.2 102 75-125 Selenium 169 10.0 ug/L 200 6.20 U 84 75-125 Silver 210 10.0 ug/L 200 2.48 104 75-125 Vanadium 189 10.0 ug/L 200 1.40 U 95 75-125 Zinc 205 10.0 ug/L 200 4.40 U 102 75-125 Matrix Spike Dup (3E04033-MSD1) Prepared: 05/04/2021 13:28 Analyzed: 05/05/2021 10:59 Source: CE03252-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 176 10.0 ug/L 200 7.60 U 88 75-125 4 20 Barium 888 10.0 ug/L 200 657 115 75-125 1 20 Beryllium 20.6 1.00 ug/L 20.0 0.160 U 103 75-125 0.6 20 Cadmium 17.6 1.00 ug/L 20.0 0.360 U 88 75-125 0.4 20 Chromium 204 10.0 ug/L 200 2.55 101 75-125 1 20 Cobalt 216 10.0 ug/L 200 13.7 101 75-125 1 20 Copper 173 10.0 ug/L 200 1.60 U 86 75-125 1 20 Lead 203 10.0 ug/L 200 3.10 U 101 75-125 0.8 20 Nickel 239 10.0 ug/L 200 33.2 103 75-125 1 20 Selenium 177 10.0 ug/L 200 6.20 U 89 75-125 5 20 Silver 213 10.0 ug/L 200 2.48 105 75-125 1 20 Vanadium 192 10.0 ug/L 200 1.40 U 96 75-125 1 20 Zinc 208 10.0 ug/L 200 4.40 U 104 75-125 1 20 Post Spike (lE04033-PSI) Prepared: 05/04/2021 13:28 Analyzed: 05/05/2021 11:01 Source: CE03252-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.172 0.0100 mg/L 0.200 -0.0370 86 80-120 Barium 0.868 0.0100 mg/L 0.200 0.657 106 80-120 Beryllium 0.0207 0.00100 mg/L 0.0200 -4.69E-5 103 80-120 Cadmium 0.0180 0.00100 mg/L 0.0200 -0.00287 90 80-120 Chromium 0.206 0.0100 mg/L 0.200 0.00255 102 80-120 Cobalt 0.216 0.0100 mg/L 0.200 0.0137 101 80-120 Copper 0.176 0.0100 mg/L 0.200 -0.0382 88 80-120 Lead 0.204 0.0100 mg/L 0.200 -0.00216 102 80-120 Nickel 0.239 0.0100 mg/L 0.200 0.0332 103 80-120 Selenium 0.173 0.0100 mg/L 0.200 -0.0488 86 80-120 Silver 0.212 0.0100 mg/L 0.200 0.00248 105 80-120 Vanadium 0.193 0.0100 mg/L 0.200 -0.0121 97 80-120 Zinc 0.208 0.0100 mg/L 0.200 0.00171 103 80-120 Batch IE04034 - EPA 3005A Blank (lE04034-BLKI) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 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 40 of 49 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE04034 - EPA 3005A - Continued Blank (SE04034-BLK1) Continued Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 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 (lE04034-BSI) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 210 10.0 ug/L 200 105 80-120 Barium 217 10.0 ug/L 200 109 80-120 Beryllium 20.5 1.00 ug/L 20.0 103 80-120 Cadmium 21.5 1.00 ug/L 20.0 108 80-120 Chromium 206 10.0 ug/L 200 103 80-120 Cobalt 211 10.0 ug/L 200 106 80-120 Copper 205 10.0 ug/L 200 102 80-120 Lead 210 10.0 ug/L 200 105 80-120 Nickel 218 10.0 ug/L 200 109 80-120 Selenium 213 10.0 ug/L 200 107 80-120 Silver 209 10.0 ug/L 200 105 80-120 Vanadium 201 10.0 ug/L 200 101 80-120 Zinc 218 10.0 ug/L 200 109 80-120 Matrix Spike (lE04034-MS1) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:09 Source: CE03255-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 160 10.0 ug/L 200 7.60 U 80 75-125 Barium 398 10.0 ug/L 200 192 103 75-125 Beryllium 20.0 1.00 ug/L 20.0 0.160 U 100 75-125 Cadmium 15.9 1.00 ug/L 20.0 0.360 U 79 75-125 Chromium 197 10.0 ug/L 200 1.40 U 99 75-125 Cobalt 199 10.0 ug/L 200 6.54 96 75-125 Copper 162 10.0 ug/L 200 1.60 U 81 75-125 Lead 193 10.0 ug/L 200 3.10 U 96 75-125 Nickel 317 10.0 ug/L 200 122 97 75-125 Selenium 157 10.0 ug/L 200 6.20 U 79 75-125 Silver 210 10.0 ug/L 200 1.90 U 105 75-125 Vanadium 185 10.0 ug/L 200 1.40 U 92 75-125 Zinc 199 10.0 ug/L 200 4.40 U 99 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 41 Of 49 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE04034 - EPA 3005A - Continued Matrix Spike Dup (3E04034-MSD1) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:22 Source: CE03255-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 176 10.0 ug/L 200 7.60 U 88 75-125 10 20 Barium 418 10.0 ug/L 200 192 113 75-125 5 20 Beryllium 21.2 1.00 ug/L 20.0 0.160 U 106 75-125 6 20 Cadmium 16.8 1.00 ug/L 20.0 0.360 U 84 75-125 6 20 Chromium 209 10.0 ug/L 200 1.40 U 105 75-125 6 20 Cobalt 211 10.0 ug/L 200 6.54 102 75-125 6 20 Copper 174 10.0 ug/L 200 1.60 U 87 75-125 7 20 Lead 204 10.0 ug/L 200 3.10 U 102 75-125 6 20 Nickel 335 10.0 ug/L 200 122 106 75-125 5 20 Selenium 169 10.0 ug/L 200 6.20 U 84 75-125 7 20 Silver 223 10.0 ug/L 200 1.90 U 111 75-125 6 20 Vanadium 197 10.0 ug/L 200 1.40 U 99 75-125 6 20 Zinc 212 10.0 ug/L 200 4.40 U 106 75-125 6 20 Post Spike (lE04034-PS1) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:24 Source: CE03255-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.176 0.0100 mg/L 0.200 -0.0401 88 80-120 Barium 0.426 0.0100 mg/L 0.200 0.192 117 80-120 Beryllium 0.0215 0.00100 mg/L 0.0200 -0.000101 108 80-120 Cadmium 0.0173 0.00100 mg/L 0.0200 -0.00408 87 80-120 Chromium 0.213 0.0100 mg/L 0.200 0.000867 106 80-120 Cobalt 0.216 0.0100 mg/L 0.200 0.00654 105 80-120 Copper 0.179 0.0100 mg/L 0.200 -0.0447 90 80-120 Lead 0.208 0.0100 mg/L 0.200 -0.00388 104 80-120 Nickel 0.342 0.0100 mg/L 0.200 0.122 110 80-120 Selenium 0.181 0.0100 mg/L 0.200 -0.0509 91 80-120 Silver 0.226 0.0100 mg/L 0.200 0.00179 112 80-120 Vanadium 0.200 0.0100 mg/L 0.200 -0.0127 100 80-120 Zinc 0.216 0.0100 mg/L 0.200 0.00100 108 80-120 Batch IE04035 - EPA 3005A Blank (3E04035-BLK3) Prepared: 05/04/2021 13:39 Analyzed: 05/05/2021 17:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (3E04035-BSI) Prepared: 05/04/2021 13:39 Analyzed: 05/05/2021 17:16 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 20.7 1.00 ug/L 20.0 104 80-120 Selenium 21.2 1.00 ug/L 20.0 106 80-120 Thallium 20.6 1.00 ug/L 20.0 103 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 42 Of 49 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE04035 - EPA 3005A - Continued Matrix Spike (SE04035-MS3) Prepared: 05/04/2021 13:39 Analyzed: 05/05/2021 17:21 Source: CE03255-02 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.0 2.00 ug/L 40.0 0.740 U 105 75-125 Selenium 36.9 2.00 ug/L 40.0 1.82 U 92 75-125 Thallium 40.1 2.00 ug/L 40.0 0.220 U 100 75-125 Matrix Spike Dup (lE04035-MSDI) Prepared: 05/04/2021 13:39 Analyzed: 05/05/2021 17:25 Source: CE03255-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Antimony 43.2 2.00 ug/L 40.0 0.740 U 108 75-125 3 20 Selenium 41.1 2.00 ug/L 40.0 1.82 U 103 75-125 11 20 Thallium 40.5 2.00 ug/L 40.0 0.220 U 101 75-125 1 20 Post Spike (SE04035-PS1) Prepared: 05/04/2021 13:39 Analyzed: 05/05/2021 17:29 Source: CE03255-02 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Antimony 23.7 1.00 ug/L 20.0 0.0234 119 75-125 Selenium 23.0 1.00 ug/L 20.0 -0.196 115 75-125 Thallium 23.0 1.00 ug/L 20.0 0.00222 115 75-125 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch IE06020 - EPA 5030E MS Blank (lE06020-BLKI) Prepared: 05/06/2021 00:00 Analyzed: 05/06/2021 10:14 Spike Source O/oREC 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-& 5.1 u91L 5.00 103 75-125 LCS (lE06020-BSI) Prepared: 05/06/2021 00:00 Analyzed: 05/06/2021 09:49 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 96 80-133 Toluene-& 5.0 u91L 5.00 99 75-125 Matrix Spike (3E06020-MS1) Prepared: 05/06/2021 00:00 Analyzed: 05/06/2021 19:24 Source: CE03255-01 Spike Source O/oREC RPD Analvte Result Flaa Q Units Level Result O/oREC Limits RPD Limit Notes 1,4-Dioxane 190 2.0 ug/L 25.0 170 83 80-133 Toluene-& 5.0 u91L 5.00 101 75-125 Matrix Spike Dup (3E06020-MSD1) Prepared: 05/06/2021 00:00 Analyzed: 05/06/2021 19:49 Source: CE03255-01 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes 1,4-Dioxane 190 2.0 ug/L 25.0 170 91 80-133 1 19 Toluene-& 5.0 u91L 5.00 100 75-125 Batch IE07022 - EPA 50306 MS FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 43 Of 49 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch IE07022 - EPA 5030E MS - Continued Blank (3E07022-BLK1) Prepared: 05/07/2021 00:00 Analyzed: 05/07/2021 11:30 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 5.2 u91L 5.00 103 75-125 LCS (1E07022-BS1) Prepared: 05/07/2021 00:00 Analyzed: 05/07/2021 10:31 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 99 80-133 Toluene-d8 5.0 u91L 5.00 99 75-125 Matrix Spike (1E07022-MS1) Prepared: 05/07/2021 00:00 Analyzed: 05/07/2021 16:13 Source: AE02060-01 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 96 80-133 Toluene-d8 4.9 u91L 5.00 96 75-125 Matrix Spike Dup (3E07022-MSD1) Prepared: 05/07/2021 00:00 Analyzed: 05/07/2021 16:38 Source: AE02060-01 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 1 19 Toluene-d8 5.5 u91L 5.00 110 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 44 Of 49 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QL-02 The associated laboratory control sample exhibited high bias; since the result is ND, there is no impact. QM-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 45 of 49 E r-3 cc 0 w CC 0 (n U Li 0 z a 2 U) W_ cc O a m O m a z 0 R cc LL I U) z 0 U J z LIJ z O cc 5 z lu 0 Ul o a _0 _0O ro m A .� C =gi Y ♦ C .ydc N a C E v o U ® N m H L� (%} w � a O m 4 E' Jr E E 7 Cr y � � p W � � Q R Q m Q z � U v � r ¢ CD N _ C C a F a c o V 5 P U N � N N `m L � corr � � m Z m 10 N m a c 7 y a 0 m p N cr ¢ ¢ z W C C U E_ _s _ N G m € Uz`n li QS '8$`�i5`Qd`IW`n�'�ry'OJ'pa'og'*9'sd'�V X X x x X x X X x X X X o m n � o � J roa•1 0 a� o QI ras DoazwPoaa3 OQ9Z'8•` RPUgMb C109ZO x X X x X X X X x X X X QI 9 N P a= °' a 2 cx 1 _ [vi C3 C7 i? C3 (7 0 0 0 C7 0 12 p y ¢ O ¢ � N r =7 N A -1 o r zU N • } U m �aQ E P y lE ^��• fir I� i ,y�^. VJ V �/� C" J l /��'y .� ¢ .� ¢ S �i L rf�.� LJ �•T• a a a ¢ m m y n m Q --++ � 6 rJ S 9 ��2-4 �o W -is` , l _ '' r, 7� W N �y n O �- �— � i .3— �— �' --y- o yZ cy I � C � 00 N o 2 t7 2TT C � m a � TN ! 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E G? n Q .-+ ao m Eto m a v ro -� a 7 a 5 z _ro a E E El Page 47 of E 49 U ¢ U Vi U7 UJ U Sample Preservation Verification 99CE)9 ENCO Cary Work Order: CE03255 Project: White Street LF-Phase II Client: Golder Associates. Inc (GO007) Project #: 1668421,107 Logged In'. 30-Apr-21 14:28 Logged By: Rachel Ann Yonis k Preservation Check Performed By. �_ Date/Time CE03255-01 Cont Type Pres (pH) Requirement PH Checked 1 In Control PH Adjusted Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y�/ N I NA Y N I NA CE03255-02 Corn Type Pres (pH) PH Checked I PI-i Adjusted Date/Time Reagent Used/Comments Requirement In Control Adjusted A 250mLP+HNO3 1 <2 Y J N I NA Y I N I NA CE03255-03 Cant Type Pres (pH) PH Checked I pH Adjusted Date/Time Reagent Used/Comments Requirement In Control Adjusted A 250mLP+HNO3 <2 Y} N/ NA Y !� N l NA C E03255-04 Cont Type Pres (PH) PH Checked/ pH Adjusted Date/Time Reagent Used/Comments Requirement In Control Adjusted A 250mLP+HNO3 <2 Y 1 N/ NA Y N/ NA CE03255-05 Cont TyPe Pres (PH) PH Checked ! pH Adjusted Date/Time Reagent Used/Comments Requirement In Control Adjusted A 250mLP+HNO3 <2 Y? N / NA Y Y N / NA C E03255-06 Cont Type Pres (pH) Requirement PH Checked / In Control DateMme PH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 1 2 j Y/ N/ NA I Y NA CE03255-07 Cont Type Pres (pH) Requirement Phi Checked / In Control pH Adjusted Datef-Fime Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y I N I NA Y T N/ NA C E03255-08 Cont Type Pres (pH) pH Checked I pH Adjusted Datef ime Reagent Used/Comments Requirement In Control Adjusted A 250mLP+HNO3 <2 Y;/ N / NA YIN 1 NA C E03255-09 Cont Type Pres (PH) pH Checked / PH Adjusted Date/Time Reagent Used/Comments Requirement In Control Adjusted A 250mLP+HNO3 <2 ! Y 1 N 1 NA Y j N 1 NA C:lelmntlPrintlwko_PreservationCheck.rpt Page 48 of 49 Sample Preservation Verification ENCO Ca 99- M_ Work Order: CE03255 Project: White Street LF-Phase II Client: Golder Associates, Inc. (GO007) Project#: 1668421.107 Logged In: 30-Apr-21 14:28 Logged By: Rachel Ann jYoonnis { j Preservation Check Performed By: Date/Time:�L 1 1 CE03255-10 Cant Type Pres (pH) Requirement pH Checked ! In Control pH Adjusted DatelTme Adiusted Reagent Used/Comments A 25QmLP+HNO3 <2 6 Yi/ N / NA Y N,f NA CE03255-11 Cont Type Pres (pH) Requirement PH Checked 1 I In Control pH Adjusted Datef ime Adjusted Reagent Used/Comments A 250mI-P+HNO3 <2 Y 11 , N ! NA Y Ir N ! NA CE03255-12 Cont Type Pres (pH) Requirement pH Checked / In Control pH Adjusted Date�me Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y, N / NA Y / N ,-. NA Rea-clent Name ID 1 2 Reagent Name ID 3 4 Rea ent Name ID 5 6 pH Strip ID: PH Strips COF0555 C:lelmnt\Printlwko_NreservanonLneL;n. rpt Page 49 of 49 WORK ORDER Printed: 5/3/2021 8:19:13AM CE03255 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase II Project Number: 19131339.103 PO #: Report To: Golder Associates, Inc. (G0007) Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 Phone: (336) 852-4903 Fax: (336) 852-4904 Invoice To: City of Greensboro (CI034) Richard Lovett 401 Patton Ave Greensboro, NC 27406 Phone :(336) 373-4188 Fax: Received By: David E. Wilder Date Received: 30-Apr-21 13:50 Logged In By: Rachel Ann Yonish Date Logged In: 30-Apr-21 14:28 Work Order Comments: C-25 received at 1.7°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Tuesday, May 11, 2021 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.103, Project Name/Desc: White Street LF-Phase II MNA ENCO Workorder(s): CE03256 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Thursday, April 29, 2021. 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 H PROJECT NARRATIVE Date: May 11, 2021 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase II MNA Lab ID: CE03256 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 spike recoveries for Chloride, Nitrate/Nitrite, Sulfate, and Sulfide were outside control limits for the MS and/or MSD samples, the precision between duplicate spikes of Chloride exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these analytes. The Fatty Acids Continuing Calibration Verification (CCV) exhibited a high bias for iso-Hexanoic Acid; however, this analyte was not detected in the associated samples. Quality Control Remarks The precision between duplicate samples for Methane was outside of acceptance limits. 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. No aqueous volatile samples were received, negating the need to check for preservation or headspace. 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 18 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-IIl Lab ID: CE03256-01 Sampled: 04/28/21 09:37 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 05/26/21 05/04/21 11:37 05/04/21 16:56 EPA 310.2 NO PREP 05/12/21 04/30/21 10:37 04/30/21 13:15 EPA 353.2 NO PREP 04/30/21 09:37 04/29/21 15:43 04/29/21 16:45 EPA 353.2 [CALC] 04/30/21 09:37 05/03/21 12:56 05/03/21 15:43 EPA 353.2 NO PREP 05/26/21 05/03/21 12:56 05/03/21 15:43 SM 4500S2 D-2011 NO PREP 05/05/21 04/30/21 14:39 04/30/21 14:52 SM 531OB-2011 NO PREP 05/26/21 05/03/21 08:02 05/03/21 18:01 Volatile Fatty Acids NA 05/26/21 05/06/21 10:35 05/06/21 14:37 Client ID: 4103-II1 Lab ID: CE03256-01RE1 Sampled: 04/28/21 09:37 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 05/26/21 05/05/21 12:24 05/05/21 15:03 RSK 175 Same 05/12/21 05/04/21 10:24 05/04/21 12:16 Client ID: 4103-II9 Lab ID: CE03256-02 Sampled: 04/28/21 10:48 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 353.2 NO PREP 04/30/21 10:48 04/29/21 15:43 04/29/21 16:50 EPA 353.2 [CALC] 04/30/21 10:48 05/03/21 12:56 05/03/21 15:52 EPA 353.2 NO PREP 05/26/21 05/03/21 12:56 05/03/21 15:52 RSK 175 Same 05/12/21 05/03/21 10:18 05/03/21 14:30 SM 4500S2 D-2011 NO PREP 05/05/21 04/30/21 14:39 04/30/21 14:52 SM 531OB-2011 NO PREP 05/26/21 05/03/21 08:02 05/03/21 18:24 Volatile Fatty Acids NA 05/26/21 05/06/21 10:35 05/06/21 15:21 Client ID: 4103-II9 Lab ID: CE03256-02RE1 Sampled: 04/28/21 10:48 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 310.2 NO PREP 05/12/21 04/30/21 10:37 04/30/21 13:56 Client ID: 4103-II9 Lab ID: CE03256-02RE2 Sampled: 04/28/21 10:48 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 05/26/21 05/05/21 12:24 05/05/21 17:07 Client ID: 4103-II9 Lab ID: CE03256-02RE3 Sampled: 04/28/21 10:48 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 05/26/21 05/05/21 12:24 05/06/21 08:50 Client ID: 4303-SMW3 Lab ID: CE03256-03 Sampled: 04/28/21 12:20 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 310.2 NO PREP 05/12/21 04/30/21 10:37 04/30/21 13:19 EPA 353.2 NO PREP 04/30/21 12:20 04/29/21 15:43 04/29/21 16:53 EPA 353.2 [CALC] 04/30/21 12:20 05/03/21 12:56 05/03/21 15:57 EPA 353.2 NO PREP 05/26/21 05/03/21 12:56 05/03/21 15:57 SM 4500S2 D-2011 NO PREP 05/05/21 04/30/21 14:39 04/30/21 14:52 SM 531OB-2011 NO PREP 05/26/21 05/03/21 08:02 05/03/21 18:44 Volatile Fatty Acids NA 05/26/21 05/06/21 10:35 05/06/21 16:06 Client ID: 4103-SMW3 Lab ID: CE03256-03RE1 Sampled: 04/28/21 12:20 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) RSK 175 Same 05/12/21 05/04/21 10:24 05/04/21 12:32 Client ID: 4303-SMW3 Lab ID: CE03256-03RE2 Sampled: 04/28/21 12:20 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 05/26/21 05/05/21 12:24 05/05/21 17:25 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 18 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-MW34 Lab ID: CE03256-04 Sampled: 04/28/21 09:04 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 310.2 NO PREP 05/12/21 04/30/21 10:37 04/30/21 13:19 EPA 353.2 NO PREP 04/30/21 09:04 04/29/21 15:43 04/29/21 16:54 EPA 353.2 [CALC] 04/30/21 09:04 05/03/21 12:56 05/03/21 15:59 EPA 353.2 NO PREP 05/26/21 05/03/21 12:56 05/03/21 15:59 SM 4500S2 D-2011 NO PREP 05/05/21 04/30/21 14:39 04/30/21 14:52 SM 531OB-2011 NO PREP 05/26/21 05/03/21 08:02 05/03/21 19:03 Volatile Fatty Acids NA 05/26/21 05/06/21 10:35 05/06/21 16:50 Client ID: 4103-MW14 Lab ID: CE03256-04RE1 Sampled: 04/28/21 09:04 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 300.0 NO PREP 05/26/21 05/05/21 12:24 05/05/21 15:56 RSK 175 Same 05/12/21 05/04/21 10:24 05/04/21 12:47 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 18 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4103-IIl Lab ID: CE03256-01 Analvte Sulfate as SO4 Total Alkalinity as CaCO3 Total Organic Carbon Results 200000 960000 49000 Flag D D MDL 58000 140000 540 Q 100000 150000 1000 Units ug/L ug/L ug/L Method EPA 300.0 EPA 310.2 SM 5310B-2011 Notes Client ID: 4103-IIl Lab ID: CE03256-01RE3 Analvte Chloride Methane Results 400000 54.7 Flag D MDL 87000 4.00 POLL 200000 5.00 Units ug/L ug/L Method EPA 300.0 RSK 175 Notes Client ID: 4103-II9 Lab ID: CE03256-02 Analvte Total Organic Carbon Results 5500 Flag MDL 540 POLL 1000 Units ug/L Method SM 5310B-2011 Notes Client ID: 4103-II9 Lab ID: CE03256-02RE3 Analvte Total Alkalinity as CaCO3 Results 48000 Flag MDL 14000 POLL 15000 Units ug/L Method EPA 310.2 Notes Client ID: 4103-II9 Lab ID: CE03256-02RE2 Analvte Sulfate as SO4 Results 51000 Flag D MDL 14000 POLL 25000 Units ug/L Method EPA 300.0 Notes Client ID: 4103-II9 Lab ID: CE03256-02RE3 Analvte Chloride Results 24000 Flag MDL 2200 POLL 5000 Units ug/L Method EPA 300.0 Notes Client ID: 4303-SMW3 Lab ID: CE03256-03 Analvte Results Flag MDL POLL Units Method Notes Total Alkalinity as CaCO3 450000 D 70000 75000 ug/L EPA 310.2 Total Organic Carbon 4600 540 1000 ug/L SM 5310B-2011 Client ID: 4303-SMW3 Lab ID: CE03256-03RE3 Analvte Results Flag MDL POLL Units Method Notes Methane 51.1 4.00 5.00 ug/L RSK 175 Client ID: 4303-SMW3 Lab ID: CE03256-03RE2 Analvte Results Flag MDL POLL Units Method Notes Chloride 25000 D 11000 25000 ug/L EPA 300.0 Sulfate as SO4 39000 D 14000 25000 ug/L EPA 300.0 Client ID: 4303-MW34 Lab ID: CE03256-04 Analvte Results Flag MDL POLL Units Method Notes Total Organic Carbon 700 J 540 1000 ug/L SM 5310B-2011 Client ID: 4103-MW14 Lab ID: CE03256-04RE1 Analvte Results Flag MDL POLL Units Method Notes Chloride 3300 J 2200 5000 ug/L EPA 300.0 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Pager) Of 18 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-IIl Lab Sample ID:CE03256-01 Received: 04/29/21 10:00 Matrix: Ground Water Sampled: 04/28/2109:37 Work Order: CE03256 Project: White Street LF-Phase II MNA Sampled By:T. Martinez/J.Tejeda-Torre: Classical Chemistry Parameters ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Chloride [16887-00-6]^ 400000 D ug/L 40 87000 200000 1E05021 EPA 300.0 05/05/21 15:03 ZGW Nitrate as N [14797-55-8] 0.041 u mg/L 1 0.041 0.10 [CALC] EPA 353.2 05/03/21 15:43 JAH Nitrate/Nitrite as N^ 41 u ug/L 1 41 100 lE03037 EPA 353.2 05/03/21 15:43 JAH Nitrite as N [14797-65-0]^ 17 U ug/L 1 17 100 1D29019 EPA 353.2 04/29/21 16:45 JAH Sulfate as SO4 [14808-79-8]^ 200000 D ug/L 20 58000 100000 1E04022 EPA 300.0 05/04/21 16:56 ZGW Sulfide[18496-25-8]^ 10 U ug/L 1 10 100 1D30030 >M 4500S2 D-2011 04/30/21 14:52 JOC Total Alkalinity as CaCO3 [471-34-1]^ 960000 D ug/L 10 140000 150000 1D30024 EPA 310.2 04/30/21 13:15 JAH Dissolved Gases by GC Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Ethane [74-84-0] 5.10 U ug/L 1 5.10 6.00 lE04011 RSK 175 05/04/21 12:16 RGG Ethene [74-85-1] 5.10 U ug/L 1 5.10 6.00 lE04011 RSK 175 05/04/21 12:16 RGG Methane [74-82-8] 54.7 ug/L 1 4.00 5.00 1E04011 RSK 175 05/04/21 12:16 RGG Volatile Fatty Acids by HPLC Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Acetic Acid [64-19-7] 180 U ug/L 1 180 200 lE06018 ✓olatile Fatty Acids 05/06/21 14:37 JFI Butyric Acid [107-92-6] 89 U ug/L 1 89 100 lE06018 ✓olatile Fatty Acids 05/06/21 14:37 JFI Hexanoic Acid [142-62-1] 260 U ug/L 1 260 500 lE06018 ✓olatile Fatty Acids 05/06/21 14:37 JFI iso-Hexanoic Acid [646-07-1] 440 U ug/L 1 440 500 lE06018 ✓olatile Fatty Acids 05/06/21 14:37 JFI QV-01 iso-Pentanoic Acid [503-74-2] 180 U ug/L 1 180 200 lE06018 ✓olatile Fatty Acids 05/06/21 14:37 JFI Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 130 U ug/L 1 130 140 lE06018 ✓olatile Fatty Acids 05/06/21 14:37 JFI [50-21-5/594-61-6] Pentanoic Acid [109-52-4] 140 U ug/L 1 140 200 lE06018 ✓olatile Fatty Acids 05/06/21 14:37 JFI Propionic Acid [79-09-4] 65 U ug/L 1 65 100 lE06018 ✓olatile Fatty Acids 05/06/21 14:37 JFI Pyruvic Acid [127-17-3] 21 U ug/L 1 21 70 lE06018 ✓olatile Fatty Acids 05/06/21 14:37 JFI Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes Trimethylacetic acid 17000 1 20000 87 % 50-150 IE06018 Volatile Fatty Acid-, 05106121 14:37 JFI Classical Chemistry Parameters ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed By Notes Total Organic Carbon^ 49000 ug/L 1 540 1000 1D29006 SM 531OB-2011 05/03/21 18:01 KG FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 of 18 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II9 Lab Sample ID:CE03256-02 Received: 04/29/21 10:00 Matrix: Ground Water Sampled:04/28/21 10:48 Work Order: CE03256 Project: White Street LF-Phase II MNA Sampled By:T. Martinez/J.Tejeda-Torre: Classical Chemistry Parameters ^ - ENCO Cary rertified analyte [NC 591] Analvte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes Chloride [16887-00-6]^ 24000 ug/L 1 2200 5000 lE05021 EPA 300.0 05/06/21 08:50 ZGW Nitrate as N [14797-55-8] 0.041 U nng/L 1 0.041 0.10 [CALC] EPA 353.2 05/03/21 15:52 JAH Nitrate/Nitrite as N^ 41 U ug/L 1 41 100 IE03037 EPA 353.2 05/03/21 15:52 JAH Nitrite as N [14797-65-0]^ 17 U ug/L 1 17 100 ID29019 EPA 353.2 04/29/21 16:50 JAH Sulfate as SO4 [14808-79-8]^ 51000 D ug/L 5 14000 25000 lE05021 EPA 300.0 05/05/21 17:07 ZGW Sulfide[18496-25-8]^ 10 U ug/L 1 10 100 ID30030 iM 450052 D-2011 04/30/21 14:52 JOC Total Alkalinity as CaCO3 [471-34-1]^ 48000 ug/L 1 14000 15000 1D30024 EPA 310.2 04/30/21 13:56 JAH Dissolved Gases by GC Analvte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Ethane [74-84-0] 5.10 U ug/L 1 5.10 6.00 IE03029 RSK 175 05/03/21 14:30 RGG Ethene [74-85-1] 5.10 U ug/L 1 5.10 6.00 IE03029 RSK 175 05/03/21 14:30 RGG Methane [74-82-8] 4.00 U ug/L 1 4.00 5.00 IE03029 RSK 175 05/03/21 14:30 RGG Volatile Fatty Acids by HPLC Analvte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed ft Notes Acetic Acid [64-19-7] 180 U ug/L 1 180 200 IE06018 Jolatile Fatty Acids 05/06/21 15:21 JFI Butyric Acid [107-92-6] 89 U ug/L 1 89 100 IE06018 Jolatile Fatty Acids 05/06/21 15:21 JFI Hexanoic Acid [142-62-1] 260 U ug/L 1 260 500 IE06018 Jolatile Fatty Acids 05/06/21 15:21 JFI !so-Hexanoic Acid [646-07-1] 440 U ug/L 1 440 500 IE06018 Jolatile Fatty Acids 05/06/21 15:21 JFI QV-01 !so-Pentanoic Acid [503-74-2] 180 U ug/L 1 180 200 IE06018 Jolatile Fatty Acids 05/06/21 15:21 JFI Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 130 U ug/L 1 130 140 IE06018 Jolatile Fatty Acids 05/06/21 15:21 JFI [50-21-5/594-61-6] Pentanoic Acid [109-52-4] 140 U ug/L 1 140 200 IE06018 Jolatile Fatty Acids 05/06/21 15:21 JFI Propionic Acid [79-09-4] 65 U ug/L 1 65 100 IE06018 Jolatile Fatty Acids 05/06/21 15:21 JFI Pyruvic Acid [127-17-3] 21 U ug/L 1 21 70 IE06018 Jolatile Fatty Acids 05/06/21 15:21 JFI Surrogates Results DF Spike L v/ % Rec % Rec Limits Batch Method Ana/vied By Notes Trimethylace0cacid 21000 1 20000 104 % 50-150 IE06018 Volatile Fatty Acid-, 0510612115:21 JFI Classical Chemistry Parameters ^ - ENCO Orlando Certified analyte [NC 424] Analvte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes Total Organic Carbon^ 5500 ug/L 1 540 1000 1D29006 SM 531OB-2011 05/03/21 18:24 KG FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 Of 18 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW3 Lab Sample ID:CE03256-03 Received: 04/29/21 10:00 Matrix: Ground Water Sampled:04/28/21 12:20 Work Order: CE03256 Project: White Street LF-Phase II MNA Sampled By:T. Martinez/J.Tejeda-Torre: Classical Chemistry Parameters ^ - ENCO Cary rertified analyte [NC 591] Analvte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes Chloride [16887-00-6]^ 25000 D ug/L 5 11000 25000 lE05021 EPA 300.0 05/05/21 17:25 ZGW Nitrate as N [14797-55-8] 0.041 U nng/L 1 0.041 0.10 [CALC] EPA 353.2 05/03/21 15:57 JAH Nitrate/Nitrite as N^ 41 U ug/L 1 41 100 IE03037 EPA 353.2 05/03/21 15:57 JAH Nitrite as N [14797-65-0]^ 17 U ug/L 1 17 100 ID29019 EPA 353.2 04/29/21 16:53 JAH Sulfate as SO4 [14808-79-8]^ 39000 D ug/L 5 14000 25000 lE05021 EPA 300.0 05/05/21 17:25 ZGW Sulfide[18496-25-8]^ 10 U ug/L 1 10 100 ID30030 iM 450052 D-2011 04/30/21 14:52 JOC Total Alkalinity as CaCO3 [471-34-1]^ 450000 D ug/L 5 70000 75000 1D30024 EPA 310.2 04/30/21 13:19 JAH Dissolved Gases by GC Analvte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Ethane [74-84-0] 5.10 u ug/L 1 5.10 6.00 IE04011 RSK 175 05/04/21 12:32 RGG Ethene [74-85-1] 5.10 u ug/L 1 5.10 6.00 IE04011 RSK 175 05/04/21 12:32 RGG Methane [74-82-8] 51.1 ug/L 1 4.00 5.00 lE04011 RSK 175 05/04/21 12:32 RGG Volatile Fatty Acids by HPLC Analvte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed ft Notes Acetic Acid [64-19-7] 180 U ug/L 1 180 200 IE06018 Jolatile Fatty Acids 05/06/21 16:06 JFI Butyric Acid [107-92-6] 89 U ug/L 1 89 100 IE06018 Jolatile Fatty Acids 05/06/21 16:06 JFI Hexanoic Acid [142-62-1] 260 U ug/L 1 260 500 IE06018 Jolatile Fatty Acids 05/06/21 16:06 JFI !so-Hexanoic Acid [646-07-1] 440 U ug/L 1 440 500 IE06018 Jolatile Fatty Acids 05/06/21 16:06 JFI QV-01 !so-Pentanoic Acid [503-74-2] 180 U ug/L 1 180 200 IE06018 Jolatile Fatty Acids 05/06/21 16:06 JFI Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 130 U ug/L 1 130 140 IE06018 Jolatile Fatty Acids 05/06/21 16:06 JFI [50-21-5/594-61-6] Pentanoic Acid [109-52-4] 140 U ug/L 1 140 200 IE06018 ✓olatile Fatty Acids 05/06/21 16:06 JFI Propionic Acid [79-09-4] 65 U ug/L 1 65 100 IE06018 ✓olatile Fatty Acids 05/06/21 16:06 JFI Pyruvic Acid [127-17-3] 21 U ug/L 1 21 70 IE06018 ✓olatile Fatty Acids 05/06/21 16:06 JFI Surrogates Results DF Spike L v/ % Rec % Rec Limits Batch Method Ana/vied By Notes Trimethylace0cacid 20000 1 20000 100 % 50-150 IE06018 Volatile Fatty Acid-, 0510612116:06 JFI Classical Chemistry Parameters ^ - ENCO Orlando Certified analyte [NC 424] Analvte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed By Notes Total Organic Carbon^ 4600 ug/L 1 540 1000 1D29006 SM 531OB-2011 05/03/21 18:44 KG FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 18 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW14 Lab Sample ID:CE03256-04 Received: 04/29/21 10:00 Matrix: Ground Water Sampled: 04/28/2109:04 Work Order: CE03256 Project: White Street LF-Phase II MNA Sampled By:T. Martinez/J.Tejeda-Torre: Classical Chemistry Parameters ^ - ENCO Cary rertified analyte [NC 591] Analvte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes Chloride [16887-00-6]^ 3300 J ug/L 1 2200 5000 lE05021 EPA 300.0 05/05/21 15:56 ZGW Nitrate as N [14797-55-8] 0.041 U nng/L 1 0.041 0.10 [CALC] EPA 353.2 05/03/21 15:59 JAH Nitrate/Nitrite as N^ 41 U ug/L 1 41 100 IE03037 EPA 353.2 05/03/21 15:59 JAH Nitrite as N [14797-65-0]^ 17 U ug/L 1 17 100 ID29019 EPA 353.2 04/29/21 16:54 JAH Sulfate as SO4 [14808-79-8]^ 2900 U ug/L 1 2900 5000 IE05021 EPA 300.0 05/05/21 15:56 ZGW Sulfide[18496-25-8]^ 10 U ug/L 1 10 100 ID30030 iM 450052 D-2011 04/30/21 14:52 JOC Total Alkalinity as CaCO3 [471-34-1]^ 14000 U ug/L 1 14000 15000 ID30024 EPA 310.2 04/30/21 13:19 JAH Dissolved Gases by GC Analvte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Ethane [74-84-0] 5.10 U ug/L 1 5.10 6.00 IE04011 RSK 175 05/04/21 12:47 RGG Ethene [74-85-1] 5.10 U ug/L 1 5.10 6.00 IE04011 RSK 175 05/04/21 12:47 RGG Methane [74-82-8] 4.00 U ug/L 1 4.00 5.00 IE04011 RSK 175 05/04/21 12:47 RGG Volatile Fatty Acids by HPLC Analvte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed ft Notes Acetic Acid [64-19-7] 180 U ug/L 1 180 200 IE06018 Jolatile Fatty Acids 05/06/21 16:50 JFI Butyric Acid [107-92-6] 89 U ug/L 1 89 100 IE06018 Jolatile Fatty Acids 05/06/21 16:50 JFI Hexanoic Acid [142-62-1] 260 U ug/L 1 260 500 IE06018 Jolatile Fatty Acids 05/06/21 16:50 JFI !so-Hexanoic Acid [646-07-1] 440 U ug/L 1 440 500 IE06018 Jolatile Fatty Acids 05/06/21 16:50 JFI QV-01 !so-Pentanoic Acid [503-74-2] 180 U ug/L 1 180 200 IE06018 Jolatile Fatty Acids 05/06/21 16:50 JFI Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 130 U ug/L 1 130 140 IE06018 Jolatile Fatty Acids 05/06/21 16:50 JFI [50-21-5/594-61-6] Pentanoic Acid [109-52-4] 140 U ug/L 1 140 200 IE06018 ✓olatile Fatty Acids 05/06/21 16:50 JFI Propionic Acid [79-09-4] 65 U ug/L 1 65 100 IE06018 ✓olatile Fatty Acids 05/06/21 16:50 JFI Pyruvic Acid [127-17-3] 21 U ug/L 1 21 70 IE06018 ✓olatile Fatty Acids 05/06/21 16:50 JFI Surrogates Results DF Spike L v/ % Rec % Rec Limits Batch Method Ana/vied By Notes Trimethylace0c acid 21000 1 20000 105 % 50-150 IE06018 Volatile Fatty Acid-, 05106121 16:50 JFI Classical Chemistry Parameters ^ - ENCO Orlando Certified analyte [NC 424] Analvte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes Total Organic Carbon^ 700 J ug/L 1 540 1000 1D29006 SM 531OB-2011 05/03/21 19:03 KG FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 Of 18 (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 1D29019 - NO PREP Blank (1D29019-BLK1) Prepared: 04/29/2021 15:43 Analyzed: 04/29/2021 16:44 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 17 U 100 ug/L LCS (11329019-BS1) Prepared: 04/29/2021 15:43 Analyzed: 04/29/2021 17:06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 0.96 0.10 mg/L 1.00 96 90-110 Matrix Spike (1D29019-MS3) Prepared: 04/29/2021 15:43 Analyzed: 04/29/2021 16:46 Source: CE03256-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 930 100 ug/L 1000 17 U 93 90-110 Matrix Spike (11329019-MS2) Prepared: 04/29/2021 15:43 Analyzed: 04/29/2021 16:51 Source: CE03256-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 970 100 ug/L 1000 17 U 97 90-110 Matrix Spike Dup (11329019-MS131) Prepared: 04/29/2021 15:43 Analyzed: 04/29/2021 16:47 Source: CE03256-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrite as N 980 100 ug/L 1000 17 U 98 90-110 5 10 Batch ID30024 - NO PREP Blank (1D30024-BLK3) Prepared: 04/30/2021 10:37 Analyzed: 04/30/2021 13:13 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 14000 U 15000 ug/L LCS (1D30024-BSI) Prepared: 04/30/2021 10:37 Analyzed: 04/30/2021 13:14 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 99 15 mg/L 100 99 80-120 Matrix Spike (1D30024-MS3) Prepared: 04/30/2021 10:37 Analyzed: 04/30/2021 13:15 Source: CE03256-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 1400000 150000 ug/L 400000 960000 103 80-120 Matrix Spike Dup (1D30024-MSD1) Prepared: 04/30/2021 10:37 Analyzed: 04/30/2021 13:16 Source: CE03256-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Alkalinity as CaCO3 1400000 150000 ug/L 400000 960000 99 80-120 1 25 Batch ID30030 - NO PREP FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 Of 18 (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 1D30030 - NO PREP - Continued Blank (1D30030-BLK1) Prepared: 04/30/2021 14:39 Analyzed: 04/30/2021 14:52 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 10 U 100 ug/L LCS (1D30030-BS1) Prepared: 04/30/2021 14:39 Analyzed: 04/30/2021 14:52 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 0.41 0.10 mg/L 0.401 102 80-120 Duplicate (1D30030-DUP3) Prepared: 04/30/2021 14:39 Analyzed: 04/30/2021 14:52 Source: CE03256-01 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 (11330030-MS3) Prepared: 04/30/2021 14:39 Analyzed: 04/30/2021 14:52 Source: CE03256-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 140 100 ug/L 401 10 U 36 80-120 QM-07 Matrix Spike Dup (1D30030-MSD1) Prepared: 04/30/2021 14:39 Analyzed: 04/30/2021 14:52 Source: CE03256-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 130 100 ug/L 401 10 U 32 80-120 11 25 QM-07 Batch IE03037 - NO PREP Blank (lE03037-BLK3) Prepared: 05/03/2021 12:56 Analyzed: 05/03/2021 15:40 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 41 U 100 ug/L LCS (1E03037-BS1) Prepared: 05/03/2021 12:56 Analyzed: 05/03/2021 15:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 1.3 0.10 mg/L 1.25 102 90-110 Matrix Spike (3E03037-MS3) Prepared: 05/03/2021 12:56 Analyzed: 05/03/2021 15:45 Source: CE03256-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 630 100 ug/L 521 41 U 121 90-110 QM-07 Matrix Spike (3E03037-MS2) Prepared: 05/03/2021 12:56 Analyzed: 05/03/2021 15:54 Source: CE03256-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 590 100 ug/L 521 41 U 113 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 11 Of 18 (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 1E03037 - NO PREP - Continued Matrix Spike Dup (3E03037-MSD1) Prepared: 05/03/2021 12:56 Analyzed: 05/03/2021 15:47 Source: CE03256-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nitrate/Nitrite as N 620 100 ug/L 521 41 U 119 90-110 1 10 QM-07 Batch IEO4022 - NO PREP Blank (lE04022-BLK1) Prepared: 05/04/2021 11:37 Analyzed: 05/04/2021 15:10 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 2200 U 5000 ug/L Sulfate as SO4 2900 U 5000 ug/L LCS (1E04022-BS1) Prepared: 05/04/2021 11:37 Analyzed: 05/04/2021 15:28 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 52000 5000 ug/L 50000 104 90-110 Sulfate as SO4 51000 5000 ug/L 50000 102 90-110 Matrix Spike (3E04022-MS3) Prepared: 05/04/2021 11:37 Analyzed: 05/04/2021 15:45 Source: CE03251-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 580000 E 5000 ug/L 20000 460000 590 90-110 QM-07 Sulfate as SO4 21000 5000 ug/L 20000 4600 83 90-110 QM-07 Matrix Spike (3E04022-MS2) Prepared: 05/04/2021 11:37 Analyzed: 05/04/2021 16:21 Source: CE03256-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 44000 5000 ug/L 20000 9200000 NR 90-110 QM-07 Sulfate as SO4 17000 5000 ug/L 20000 200000 NR 90-110 QM-07 Matrix Spike Dup (3E04022-MSD1) Prepared: 05/04/2021 11:37 Analyzed: 05/04/2021 16:03 Ill Source: CE03251-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 480000 E 5000 ug/L 20000 460000 91 90-110 19 10 QM-11 Sulfate as SO4 22000 5000 ug/L 20000 4600 85 90-110 2 10 QM-07 Batch IE05021 - NO PREP Blank (1E05021-BLK3) Prepared: 05/05/2021 12:24 Analyzed: 05/05/2021 13:53 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 2200 U 5000 ug/L Sulfate as SO4 2900 U 5000 ug/L LCS (1E05021-BS1) Prepared: 05/05/2021 12:24 Analyzed: 05/05/2021 14:10 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 52000 5000 ug/L 50000 103 90-110 Sulfate as SO4 51000 5000 ug/L 50000 102 90-110 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 Of 18 QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch 1EO5O21 - NO PREP - Continued (� �Eo www.encolabs.com Matrix Spike (1E05021-MS3) Prepared: 05/05/2021 12:24 Analyzed: 05/05/2021 14:28 Source: CE03256-01RE3 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 1300000 200000 ug/L 800000 400000 109 90-110 Sulfate as SO4 700000 200000 ug/L 800000 120000 U 88 90-110 QM-07 Matrix Spike Dup (3E05021-MSD1) Prepared: 05/05/2021 12:24 Analyzed: 05/05/2021 14:46 Source: CE03256-OIREI Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Chloride 1300000 200000 ug/L 800000 400000 108 90-110 0.7 10 Sulfate as SO4 700000 200000 ug/L 800000 120000 U 88 90-110 0.2 10 QM-07 Dissolved Gases by GC - Quality Control Batch 1EO3O29 - Same Blank (3E03029-BLK1) Prepared: 05/03/2021 10:18 Analyzed: 05/03/2021 11:13 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ethane 5.10 U 6.00 ug/L Ethene 5.10 U 6.00 ug/L Methane 4.00 U 5.00 ug/L LCS (lE03029-BSI) Prepared: 05/03/2021 10:18 Analyzed: 05/03/2021 10:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ethane 383 6.00 ug/L 323 119 70-130 Ethene 338 6.00 ug/L 302 112 70-130 Methane 182 5.00 ug/L 172 106 70-130 LCS Dup (1E03029-BSD1) Prepared: 05/03/2021 10:18 Analyzed: 05/03/2021 11:29 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ethane 319 6.00 ug/L 323 99 70-130 18 30 Ethene 285 6.00 ug/L 302 94 70-130 17 30 Methane 150 5.00 ug/L 172 87 70-130 19 30 Duplicate (1E03029-DUP1) Prepared: 05/03/2021 10:18 Analyzed: 05/03/2021 16:16 Source: AE03569-06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ethane 5.10 U 6.00 ug/L 5.10 U 30 Ethene 5.10 U 6.00 ug/L 5.10 U 30 Methane 146 5.00 ug/L 208 35 30 QM-12 Batch IEO4O11 - Same Blank (3E04011-BLK1) Prepared: 05/04/2021 08:18 Analyzed: 05/04/2021 10:05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ethane 5.10 U 6.00 ug/L Ethene 5.10 U 6.00 ug/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 13 Of 18 (� �Eo www.encolabs.com QUALITY CONTROL DATA Dissolved Gases by GC - Quality Control Batch IE04011 - Same - Continued Blank (SE04011-BLK1) Continued Prepared: 05/04/2021 08:18 Analyzed: 05/04/2021 10:05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Methane 4.00 U 5.00 ug/L LCS (lE04011-BS1) Prepared: 05/04/2021 08:18 Analyzed: 05/04/2021 09:33 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ethane 305 6.00 ug/L 323 94 70-130 Ethene 304 6.00 ug/L 302 101 70-130 Methane 169 5.00 ug/L 172 98 70-130 LCS Dup (lE04011-BSD1) Prepared: 05/04/2021 08:18 Analyzed: 05/04/2021 09:49 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ethane 304 6.00 ug/L 323 94 70-130 0.3 30 Ethene 305 6.00 ug/L 302 101 70-130 0.4 30 Methane 167 5.00 ug/L 172 97 70-130 1 30 Duplicate (3E04011-DUP1) Prepared: 05/04/2021 08:18 Analyzed: 05/04/2021 13:35 Source: CE03256-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Ethane 5.10 U 6.00 ug/L 5.10 U 30 Ethene 5.10 U 6.00 ug/L 5.10 U 30 Methane 53.9 5.00 ug/L 54.7 1 30 Volatile Fatty Acids by HPLC - Quality Control Batch IE06018 - NA Blank (3E06018-BLK1) Prepared: 05/06/2021 10:35 Analyzed: 05/06/2021 12:22 Analvte Result Flaq POL Units Acetic Acid 180 U 200 ug/L Butyric Acid 89 U 100 ug/L Hexanoic Acid 260 U 500 ug/L iso-Hexanoic Acid 440 U 500 ug/L iso-Pentanoic Acid 180 U 200 ug/L Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 130 U 140 ug/L Pentanoic Acid 140 U 200 ug/L Propionic Acid 65 U 100 ug/L Pyruvic Acid 21 U 70 ug/L Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes Trimethylacetic acid 24000 u91L 20000 119 50-150 LCS (1E06018-BS1) Prepared: 05/06/2021 10:35 Analyzed: 05/06/2021 13:07 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits Acetic Acid 20000 200 ug/L 20000 100 60-123 Butyric Acid 20000 100 ug/L 20000 100 54-133 Hexanoic Acid 20000 500 ug/L 20000 98 62-146 iso-Hexanoic Acid 23000 500 ug/L 20000 113 36-168 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 14 of 18 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Fatty Acids by HPLC - Quality Control Batch 1E06018 - NA - Continued LCS (1E06018-BS1) Continued Prepared: 05/06/2021 10:35 Analyzed: 05/06/2021 13:07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes iso-Pentanoic Acid 19000 200 ug/L 20000 96 59-138 Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 38000 140 ug/L 40000 95 73-131 Pentanoic Acid 21000 200 ug/L 20000 107 63-131 Propionic Acid 20000 100 ug/L 20000 98 74-121 Pyruvic Acid 18000 70 ug/L 20000 90 44-137 Trimethylacetic acid 22000 ug/L 20000 111 50-150 LCS Dup (3E06018-BSD3) Prepared: 05/06/2021 10:35 Analyzed: 05/06/2021 13:51 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Acetic Acid 17000 200 ug/L 20000 86 60-123 15 25 Butyric Acid 19000 100 ug/L 20000 94 54-133 6 25 Hexanoic Acid 21000 500 ug/L 20000 106 62-146 8 25 iso-Hexanoic Acid 22000 500 ug/L 20000 108 36-168 4 25 iso-Pentanoic Acid 19000 200 ug/L 20000 95 59-138 1 25 Lactic Acid/HIBA (2-Hydroxyisobutyric Acid) 38000 140 ug/L 40000 94 73-131 2 25 Pentanoic Acid 21000 200 ug/L 20000 104 63-131 3 25 Propionic Acid 19000 100 ug/L 20000 97 74-121 0.9 25 Pyruvic Acid 18000 70 ug/L 20000 89 44-137 0.9 25 Trimethylacetic acid 22000 ug/L 20000 110 50-150 Classical Chemistry Parameters - Quality Control Batch ID29006 - NO PREP Blank (1D29006-BLK3) Prepared: 05/03/2021 08:02 Analyzed: 05/03/2021 08:54 Spike Source %REC RPD Analvte Result Flaa Q Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 540 U 1000 ug/L LCS (1D29006-BS3) Prepared: 05/03/2021 08:02 Analyzed: 05/03/2021 09:11 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 51000 1000 ug/L 50000 101 85-115 Matrix Spike (1D29006-MS3) Prepared: 05/03/2021 08:02 Analyzed: 05/03/2021 09:51 Source: AE03416-04RE3 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 50000 1000 ug/L 50000 540 100 85-115 Matrix Spike Dup (1D29006-MSDi) Prepared: 05/03/2021 08:02 Analyzed: 05/03/2021 10:13 Source: AE03416-04RE3 Spike Source %REC RPD Analvte Result Flaa Q Units Level Result %REC Limits RPD Limit Notes Total Organic Carbon 51000 1000 ug/L 50000 540 102 85-115 2 15 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 15 Of 18 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. QM-11 Precision between duplicate matrix spikes of the same sample was outside acceptance limits. QM-12 Precision between duplicate samples 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 16 of 18 E 0 u Vf M 0 V 3 3 M❑ cc 0 0 uj cc 0 U LL 0 z a U N LU cc 0 a 0 m a J z 0 a cc LU () z f0 V J z W 2 z 0 z w Q) a U m m `f O 2 \ �\ y0 D� .P N E L (D c h Q 2 N N o U i7 w m X N H e U) W t° o Q m E l E N E k p• c Y 1 W E v G d 0 y a� a o a O U P. N 'y � O y SMEMS 001 x x x x p y m z c o a a S-0OgtiWS opgInS � x x x x rrj m m m V m Z C y o0E ojuHnS x x x x � fL _ z E pe SL OISN x x x x _ .y 6 7 m ZT9c AON a` x x x x U E E E spry Age x x x x oSa ° m -A � c� h 76 � d o a 61 a r SB4E N 90 �N oos g��+�o'z�o;e�wnaMv X x x x N C G t5 m ti� r r r r 8 O or n Q � c E r Nn V El)�� Q w U m L m &mow m �� U rzo m� 2 0 a LL a ¢ m LA { C-7 r E E Q ~ e m C9 i C� [� rcn 6 n d C LL ti c m U'o 7 O y S!1 CM c V v 6. IVIT Q Q �7 /-0 10 V z N U ai m n ' s'' Q Ea Page17of18 Sample Preservation Verification ENCO Cary Work Order: CE03256 Client: Golder Associates, Inc. (00007) EJ�ICO Project: White Street LF-Phase II MNA Project #: 1668421.107 Lagged In: 29-Apr-21 11:20 Logged By: Samantha L Hy tt Preservation Check Performed By: E4 Date/Time: � U 2q � ?,I I 2;� CE03256-01 Cont Type Pres (pH) Requirement pH Checked/ 4p Control pH Adjusted Date/Time Adjusted Reagent Used/Comments E 250mLP+H2SO4 <2 Y N I NA Y N I A F 250mLP+ZnAc+NaOH >9 N / NA Y N NA CE03256-02 Cont Type Pres (pH) pH Checked / Date/Time pH Adjusted Reagent Used/Comments Requirement 1P Control Adjusted E 250mLP+H2SO4 <2 Y N I NA Y I N NA F 250mLP+ZnAc+NaOH >9 Y 1 N/ NA YIN I NA CE03256-03 Cant Type Pres (pH) pH Checked 1 Date/Time pH Adjusted Reagent Used/Comments Requirement ,. lip Control - Adjusted E 250rnLP+H2SO4 <2 Y N I NA Y / NA F 250mLP+ZnAc+NaOH >9 Y N I NA Y 1 NA CE03256-04 contType Pres (pH) pH Checked/ Date(Time PH Adjusted Reagent Used/Comments Requirement In Control Adjusted E 250mLP+H2SO4 <2 Y- N I NA Y/ N NA F 250mLP+ZnAc+NaOH >9 Y' N I NA Y I N NA Rea ent Name ID 1 2 pH Strip ID: Rea ent Name ID 3 4 Rea ent Name ID 5 6 CaELMNTIPrintlwko_PreservationCheck.rpt Page 18 of 18 WORK ORDER Printed: 4/30/2021 8:58:55AM CE03256 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase II MNA Project Number: 19131339.103 PO #: Report To: Golder Associates, Inc. (G0007) Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 Phone: (336) 852-4903 Fax: (336) 852-4904 Invoice To: City of Greensboro (CI034) Richard Lovett 401 Patton Ave Greensboro, NC 27406 Phone :(336) 373-4188 Fax: Received By: Samantha L Hyatt Date Received: 29-Apr-21 10:00 Logged In By: Samantha L Hyatt Date Logged In: 29-Apr-21 11:20 Work Order Comments: C-2198 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 N Volatile Containers Headspace Free N Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Reviewed By Date 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 12, 2021 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.103, Project Name/Desc: White Street LF-Phase II Non -Routine ENCO Workorder(s): CE03257 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, April 30, 2021. 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 27 PROJECT NARRATIVE Date: May 12, 2021 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase II Non -Routine Lab ID: CE03257 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 No Comments 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 27 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-SMW1 Lab ID: CE03257-01 Sampled: 04/28/21 13:50 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/04/21 13:33 05/05/21 13:36 EPA 6020E EPA 3005A 10/25/21 05/04/21 13:39 05/06/21 12:55 EPA 8260D EPA 503013_MS 05/12/21 05/05/21 09:24 05/05/21 15:04 EPA 8260D EPA 503013_MS 05/12/21 05/06/21 15:57 05/07/21 10:37 Client ID: 4103-SMW-3 Lab ID: CE03257-02 Sampled: 04/28/21 12:20 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/04/21 13:33 05/05/21 13:38 EPA 6020E EPA 3005A 10/25/21 05/04/21 13:39 05/06/21 12:59 EPA 8260D EPA 503013_MS O5/12/21 05/05/21 09:24 05/05/21 15:30 EPA 8260D EPA 503013_MS 05/12/21 05/06/21 15:57 05/07/21 11:04 Client ID: 4103-SMW-4 Lab ID: CE03257-03 Sampled: 04/28/21 15:30 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/04/21 13:33 05/05/21 13:41 EPA 6020B EPA 3005A 10/25/21 05/04/21 13:39 05/06/21 13:04 EPA 8260D EPA 503013_MS 05/12/21 05/05/21 09:24 05/05/21 15:55 EPA 8260D EPA 5030B_MS 05/12/21 05/06/21 15:57 05/07/21 14:14 Client ID: 4303-II-3B Lab ID: CE03257-04 Sampled: 04/28/21 14:52 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/04/21 13:33 05/05/21 13:43 EPA 6020B EPA 3005A 10/25/21 05/04/21 13:44 05/10/21 18:37 EPA 8260D EPA 503013_MS 05/12/21 05/05/21 09:24 05/05/21 16:21 EPA 8260D EPA 503013_MS 05/12/21 05/06/21 15:57 05/07/21 14:42 Client ID: 4103-II-9 Lab ID: CE03257-05 Sampled: 04/28/21 10:48 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/04/21 13:33 05/05/21 13:54 EPA 6020B EPA 3005A 10/25/21 05/04/21 13:44 05/10/21 18:41 EPA 8260D EPA 5030B_MIS 05/12/21 05/05/21 09:24 05/05/21 16:46 EPA 8260D EPA 503013_MS 05/12/21 05/07/21 14:18 05/08/21 07:51 Client ID: 4303-Trip Blank Lab ID: CE03257-06 Sampled: 04/28/21 10:48 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/12/21 05/05/21 09:24 05/05/21 17:11 EPA 8260D EPA 503013_MS 05/12/21 05/07/21 14:18 05/08/21 08:18 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 27 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-SMW1 Lab ID: CE03257-01 Analvte Results Flag MDL Q Units Method Notes Barium - Total 93.7 1.10 10.0 ug/L EPA 6010D Cadmium - Total 7.70 0.360 1.00 ug/L EPA 6010D Chromium - Total 2.18 J 1.40 10.0 ug/L EPA 6010D Cobalt - Total 20.0 1.40 10.0 ug/L EPA 6010D Copper - Total 2.89 J 1.60 10.0 ug/L EPA 6010D Nickel - Total 3.61 J 2.20 10.0 ug/L EPA 6010D Zinc - Total 517 4.40 10.0 ug/L EPA 6010D Client ID: 4103-SMW-3 Lab ID: CE03257-02 Analvte Results Flag MDL Q Units Method Notes 1,1-Dichloroethane 3.7 0.13 1.0 ug/L EPA 8260D 1,4-Dichlorobenzene 0.44 1 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 2.7 0.80 2.0 ug/L EPA 8260D Barium - Total 430 1.10 10.0 ug/L EPA 6010D cis-1,2-Dichloroethene 11 0.15 1.0 ug/L EPA 8260D Cobalt - Total 3.06 J 1.40 10.0 ug/L EPA 6010D Vinyl chloride 1.7 0.32 1.0 ug/L EPA 8260D Client ID: 4103-SMW-4 Lab ID: CE03257-03 Analvte Results Flag MDL Q Units Method Notes 1,4-Dioxane 21 0.80 2.0 ug/L EPA 8260D Barium - Total 88.9 1.10 10.0 ug/L EPA 6010D Nickel - Total 3.93 J 2.20 10.0 ug/L EPA 6010D Zinc - Total 4.46 J 4.40 10.0 ug/L EPA 6010D Client ID: 4303-II-313 Lab ID: CE03257-04 Analvte Results Flag MDL Q Units Method Notes 1,1-Dichloroethane 0.74 J 0.13 1.0 ug/L EPA 8260D 1,4-Dioxane 4.3 0.80 2.0 ug/L EPA 8260D Barium - Total 171 1.10 10.0 ug/L EPA 6010D Cobalt - Total 1.47 J 1.40 10.0 ug/L EPA 6010D Nickel - Total 2.96 J 2.20 10.0 ug/L EPA 6010D Client ID: 4103-II-9 Lab ID: CE03257-05 Analvte Results Flag MDL Q Units Method Notes Barium - Total 63.3 1.10 10.0 ug/L EPA 6010D Cadmium - Total 0.548 J 0.360 1.00 ug/L EPA 6010D Nickel - Total 2.28 J 2.20 10.0 ug/L EPA 6010D Zinc - Total 79.4 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 27 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW1 Lab Sample ID:CE03257-01 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 13:50 Work Order: CE03257 Project: White Street LF-Phase II Non -Routine Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 IE06036 EPA 8260D 05/07/21 10:37 REF 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 IE06036 EPA 8260D 05/07/21 10:37 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 IE06036 EPA 8260D 05/07/21 10:37 REF Acetone [67-64-1]A 10 u ug/L 1 10 20 IE06036 EPA 8260D 05/07/21 10:37 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 IE06036 EPA 8260D 05/07/21 10:37 REF Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 IE06036 EPA 8260D 05/07/21 10:37 REF Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 IE06036 EPA 8260D 05/07/21 10:37 REF Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Styrene [100-42-5]A 0.11 u ug/L 1 0.11 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 IE06036 EPA 8260D 05/07/21 10:37 REF Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 IE06036 EPA 8260D 05/07/21 10:37 REF Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 IE06036 EPA 8260D 05/07/21 10:37 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 Of 27 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW1 Lab Sample ID:CE03257-01 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 13:50 Work Order: CE03257 Project: White Street LF-Phase II Non -Routine Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 96 % 53-136 IE06036 EPA 8260D 05107121 10:37 REF Dibromofluoromethane 43 1 50.0 87 % 67-129 IE06036 EPA 8260D 05107121 10:37 REF Toluene-d8 51 1 50.0 103 % 59-134 IE06036 EPA 6260D 05107121 10:37 REF 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 lE04035 EPA 6020B 05/06/21 12:55 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04034 EPA 6010D 05/05/21 13:36 JDH Barium [7440-39-3]^ 93.7 ug/L 1 1.10 10.0 lE04034 EPA 6010D 05/05/21 13:36 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04034 EPA 6010D 05/05/21 13:36 JDH Cadmium [7440-43-9]^ 7.70 ug/L 1 0.360 1.00 lE04034 EPA 6010D 05/05/21 13:36 JDH Chromium [7440-47-3]^ 2.18 J ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:36 JDH Cobalt[7440-48-4]^ 20.0 ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:36 JDH Copper[7440-50-8]^ 2.89 J ug/L 1 1.60 10.0 lE04034 EPA 6010D 05/05/21 13:36 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04034 EPA 6010D 05/05/21 13:36 JDH Nickel[7440-02-O]^ 3.61 J ug/L 1 2.20 10.0 lE04034 EPA 6010D 05/05/21 13:36 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04034 EPA 6010D 05/05/21 13:36 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04034 EPA 6010D 05/05/21 13:36 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/06/21 12:55 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:36 JDH Zinc[7440-66-6]^ 517 ug/L 1 4.40 10.0 lE04034 EPA 6010D 05/05/21 13:36 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 lEO5020 EPA 8260D 05/05/21 15:04 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.1 1 5.00 101 % 75-125 lEO5020 EPA 8260D 05105121 15:04 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 27 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW-3 Lab Sample ID:CE03257-02 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 12:20 Work Order: CE03257 Project: White Street LF-Phase II Non -Routine Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF 1,1,1-Trichloroethane [71-55-6]^ 0.12 U ug/L 1 0.12 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 U ug/L 1 0.28 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF 1,1,2-Trichloroethane [79-00-5]^ 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF 1,1-Dichloroethane [75-34-3]A 3.7 ug/L 1 0.13 1.0 lE06036 EPA 8260D 05/07/21 11:04 REF 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF 1,4-Dichlorobenzene [306-46-7]^ 0.44 J ug/L 1 0.19 1.0 lE06036 EPA 8260D 05/07/21 11:04 REF 2-Butanone [78-93-3]^ 1.3 U ug/L 1 1.3 5.0 IE06036 EPA 8260D 05/07/21 11:04 REF 2-Hexanone [591-78-6]^ 0.88 U ug/L 1 0.88 5.0 IE06036 EPA 8260D 05/07/21 11:04 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE06036 EPA 8260D 05/07/21 11:04 REF Acetone [67-64-1]^ 10 U ug/L 1 10 20 IE06036 EPA 8260D 05/07/21 11:04 REF Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 IE06036 EPA 8260D 05/07/21 11:04 REF Benzene[71-43-2]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Bromochloromethane [74-97-5]^ 0.48 U ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Carbon disulfide [75-15-0]^ 1.5 U ug/L 1 1.5 5.0 IE06036 EPA 8260D 05/07/21 11:04 REF Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Chlorobenzene[108-90-7]^ 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Chloroethane [75-00-3]^ 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF cis-1,2-Dichloroethene [156-59-2]A 11 ug/L 1 0.15 1.0 lE06036 EPA 8260D 05/07/21 11:04 REF cis-1,3-Dichloropropene [10061-01-5]^ 0.20 U ug/L 1 0.20 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Ethylbenzene[100-41-4]^ 0.13 U ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE06036 EPA 8260D 05/07/21 11:04 REF Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Styrene[100-42-5]^ 0.11 U ug/L 1 0.11 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Tetrachloroethene [127-18-4]^ 0.17 U ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 IE06036 EPA 8260D 05/07/21 11:04 REF Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 IE06036 EPA 8260D 05/07/21 11:04 REF Vinyl chloride [75-01-4]A 1.7 ug/L 1 0.32 1.0 lE06036 EPA 8260D 05/07/21 11:04 REF Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 IE06036 EPA 8260D 05/07/21 11:04 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 Of 27 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW-3 Lab Sample ID:CE03257-02 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 12:20 Work Order: CE03257 Project: White Street LF-Phase II Non -Routine Sampled By:T. Martinez/J.Tejeda-Torre: 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 IE06036 EPA 8260D 05107121 11:04 REF Dibromofluoromethane 43 1 50.0 85 % 67-129 IE06036 EPA 8260D 05107121 11:04 REF Toluene-d8 51 1 50.0 102 % 59-134 IE06036 EPA 6260D 05107121 11:04 REF 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 lE04035 EPA 6020B 05/06/21 12:59 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04034 EPA 6010D 05/05/21 13:38 JDH Barium [7440-39-3]^ 430 ug/L 1 1.10 10.0 lE04034 EPA 6010D 05/05/21 13:38 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04034 EPA 6010D 05/05/21 13:38 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lE04034 EPA 6010D 05/05/21 13:38 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:38 JDH Cobalt[7440-48-4]^ 3.06 J ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:38 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lE04034 EPA 6010D 05/05/21 13:38 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04034 EPA 6010D 05/05/21 13:38 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 lE04034 EPA 6010D 05/05/21 13:38 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04034 EPA 6010D 05/05/21 13:38 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04034 EPA 6010D 05/05/21 13:38 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/06/21 12:59 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:38 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 lE04034 EPA 6010D 05/05/21 13:38 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]^ 2.7 ug/L 1 0.80 2.0 lE05020 EPA 8260D 05/05/21 15:30 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 101 % 75-125 lEO5020 EPA 8260D 05105121 1520 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 27 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW-4 Lab Sample ID:CE03257-03 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 15:30 Work Order: CE03257 Project: White Street LF-Phase II Non -Routine Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 IE06036 EPA 8260D 05/07/21 14:14 REF 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 IE06036 EPA 8260D 05/07/21 14:14 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 IE06036 EPA 8260D 05/07/21 14:14 REF Acetone [67-64-1]A 10 u ug/L 1 10 20 IE06036 EPA 8260D 05/07/21 14:14 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 IE06036 EPA 8260D 05/07/21 14:14 REF Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 IE06036 EPA 8260D 05/07/21 14:14 REF Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 IE06036 EPA 8260D 05/07/21 14:14 REF Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Styrene [100-42-5]A 0.11 u ug/L 1 0.11 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 IE06036 EPA 8260D 05/07/21 14:14 REF Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 IE06036 EPA 8260D 05/07/21 14:14 REF Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 IE06036 EPA 8260D 05/07/21 14:14 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 of 27 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SMW-4 Lab Sample ID:CE03257-03 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 15:30 Work Order: CE03257 Project: White Street LF-Phase II Non -Routine Sampled By:T. Martinez/J.Tejeda-Torre: 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 94 % 53-136 IE06036 EPA 8260D 05107121 14:14 REF Dibromofluoromethane 43 1 50.0 87 % 67-129 IE06036 EPA 8260D 05107121 14:14 REF Toluene-d8 52 1 50.0 104 % 59-134 IE06036 EPA 6260D 05107121 14:14 REF 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 lE04035 EPA 6020B 05/06/21 13:04 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04034 EPA 6010D 05/05/21 13:41 JDH Barium [7440-39-3]^ 88.9 ug/L 1 1.10 10.0 lE04034 EPA 6010D 05/05/21 13:41 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04034 EPA 6010D 05/05/21 13:41 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lE04034 EPA 6010D 05/05/21 13:41 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:41 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:41 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lE04034 EPA 6010D 05/05/21 13:41 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04034 EPA 6010D 05/05/21 13:41 JDH Nickel[7440-02-O]^ 3.93 J ug/L 1 2.20 10.0 lE04034 EPA 6010D 05/05/21 13:41 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04034 EPA 6010D 05/05/21 13:41 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04034 EPA 6010D 05/05/21 13:41 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04035 EPA 6020B 05/06/21 13:04 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:41 JDH Zinc[7440-66-6]^ 4.46 J ug/L 1 4.40 10.0 lE04034 EPA 6010D 05/05/21 13:41 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]^ 21 ug/L 1 0.80 2.0 lE05020 EPA 8260D 05/05/21 15:55 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 99 % 75-125 lEO5020 EPA 8260D 05105121 15:55 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 2% 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-3B Lab Sample ID:CE03257-04 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 14:52 Work Order: CE03257 Project: White Street LF-Phase II Non -Routine Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF 1,1-Dichloroethane [75-34-3]A 0.74 J ug/L 1 0.13 1.0 lE06036 EPA 8260D 05/07/21 14:42 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 IE06036 EPA 8260D 05/07/21 14:42 REF 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 IE06036 EPA 8260D 05/07/21 14:42 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 IE06036 EPA 8260D 05/07/21 14:42 REF Acetone [67-64-1]^ 10 u ug/L 1 10 20 IE06036 EPA 8260D 05/07/21 14:42 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 IE06036 EPA 8260D 05/07/21 14:42 REF Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 IE06036 EPA 8260D 05/07/21 14:42 REF Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Chlorobenzene[108-90-7]^ 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Ethylbenzene[100-41-4]^ 0.13 u ug/L 1 0.13 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 IE06036 EPA 8260D 05/07/21 14:42 REF Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF trans-1,3-Dichloropropene [10061-02-6]A 0.15 u ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 IE06036 EPA 8260D 05/07/21 14:42 REF Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 IE06036 EPA 8260D 05/07/21 14:42 REF Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 IE06036 EPA 8260D 05/07/21 14:42 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 27 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-313 Lab Sample ID:CE03257-04 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 14:52 Work Order: CE03257 Project: White Street LF-Phase II Non -Routine Sampled By:T. Martinez/J.Tejeda-Torre: 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 93 % 53-136 IE06036 EPA 8260D 05107121 14:42 REF Dibromofluoromethane 43 1 50.0 86 % 67-129 IE06036 EPA 8260D 05107121 14:42 REF Toluene-d8 51 1 50.0 102 % 59-134 IE06036 EPA 6260D 05107121 14:42 REF 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 lE04036 EPA 6020B 05/10/21 18:37 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04034 EPA 6010D 05/05/21 13:43 JDH Barium [7440-39-3]^ 171 ug/L 1 1.10 10.0 lE04034 EPA 6010D 05/05/21 13:43 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04034 EPA 6010D 05/05/21 13:43 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lE04034 EPA 6010D 05/05/21 13:43 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:43 JDH Cobalt[7440-48-4]^ 1.47 J ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:43 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lE04034 EPA 6010D 05/05/21 13:43 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04034 EPA 6010D 05/05/21 13:43 JDH Nickel[7440-02-O]^ 2.96 J ug/L 1 2.20 10.0 lE04034 EPA 6010D 05/05/21 13:43 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04034 EPA 6010D 05/05/21 13:43 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04034 EPA 6010D 05/05/21 13:43 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04036 EPA 6020B 05/10/21 18:37 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:43 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 lE04034 EPA 6010D 05/05/21 13:43 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]^ 4.3 ug/L 1 0.80 2.0 lE05020 EPA 8260D 05/05/21 16:21 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 100 % 75-125 lEO5020 EPA 8260D 05105121 16:21 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 27 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-9 Lab Sample ID:CE03257-05 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 10:48 Work Order: CE03257 Project: White Street LF-Phase II Non -Routine Sampled By:T. Martinez/J.Tejeda-Torre: Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 IE07023 EPA 8260D 05/08/21 07:51 REF 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 IE07023 EPA 8260D 05/08/21 07:51 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 IE07023 EPA 8260D 05/08/21 07:51 REF Acetone [67-64-1]A 10 u ug/L 1 10 20 IE07023 EPA 8260D 05/08/21 07:51 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 IE07023 EPA 8260D 05/08/21 07:51 REF Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 IE07023 EPA 8260D 05/08/21 07:51 REF Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 IE07023 EPA 8260D 05/08/21 07:51 REF Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 IE07023 EPA 8260D 05/08/21 07:51 REF Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 IE07023 EPA 8260D 05/08/21 07:51 REF Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 IE07023 EPA 8260D 05/08/21 07:51 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 Of 27 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-II-9 Lab Sample ID:CE03257-05 Received: 04/30/21 13:50 Matrix: Ground Water Sampled:04/28/21 10:48 Work Order: CE03257 Project: White Street LF-Phase II Non -Routine Sampled By:T. Martinez/J.Tejeda-Torre: 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 94 % 53-136 IE07023 EPA 8260D 05106121 07:51 REF Dibromofluoromethane 43 1 50.0 87 % 67-129 IE07023 EPA 8260D 05108121 07:51 REF Toluene-d8 51 1 50.0 103 % 59-134 IE07023 EPA 6260D 05108121 07:51 REF 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 lE04036 EPA 6020B 05/10/21 18:41 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04034 EPA 6010D 05/05/21 13:54 JDH Barium [7440-39-3]^ 63.3 ug/L 1 1.10 10.0 lE04034 EPA 6010D 05/05/21 13:54 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04034 EPA 6010D 05/05/21 13:54 JDH Cadmium [7440-43-9]^ 0.548 J ug/L 1 0.360 1.00 lE04034 EPA 6010D 05/05/21 13:54 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:54 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:54 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lE04034 EPA 6010D 05/05/21 13:54 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04034 EPA 6010D 05/05/21 13:54 JDH Nickel[7440-02-O]^ 2.28 J ug/L 1 2.20 10.0 lE04034 EPA 6010D 05/05/21 13:54 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04034 EPA 6010D 05/05/21 13:54 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04034 EPA 6010D 05/05/21 13:54 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04036 EPA 6020B 05/10/21 18:41 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 13:54 JDH Zinc[7440-66-6]^ 79.4 ug/L 1 4.40 10.0 lE04034 EPA 6010D 05/05/21 13:54 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 lEO5020 EPA 8260D 05/05/21 16:46 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed By Notes Toluene-d8 5.0 1 5.00 100 % 75-125 lEO5020 EPA 8260D 05105121 16:46 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 2% 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103-Trip Blank Lab Sample ID:CE03257-06 Received: 04/30/21 13:50 Matrix: Water Sampled:04/28/21 10:48 Work Order: CE03257 Project: White Street LF-Phase II Non -Routine Sampled By: ENCO Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 IE07023 EPA 8260D 05/08/21 08:18 REF 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 IE07023 EPA 8260D 05/08/21 08:18 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 IE07023 EPA 8260D 05/08/21 08:18 REF Acetone [67-64-1]A 10 u ug/L 1 10 20 IE07023 EPA 8260D 05/08/21 08:18 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 IE07023 EPA 8260D 05/08/21 08:18 REF Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 IE07023 EPA 8260D 05/08/21 08:18 REF Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 IE07023 EPA 8260D 05/08/21 08:18 REF Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Styrene [100-42-5]A 0.11 u ug/L 1 0.11 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 IE07023 EPA 8260D 05/08/21 08:18 REF Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 IE07023 EPA 8260D 05/08/21 08:18 REF Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 IE07023 EPA 8260D 05/08/21 08:18 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 15 Of 27 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-Trip Blank Lab Sample ID:CE03257-06 Received: 04/30/21 13:50 Matrix: Water Sampled:04/28/21 10:48 Work Order: CE03257 Project: White Street LF-Phase II Non -Routine Sampled By: ENCO Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 47 1 50.0 94 % 53-136 IE07023 EPA 8260D 05106121 08:18 REF Dibromofluoromethane 43 1 50.0 86 % 67-129 IE07023 EPA 8260D 05108121 08:18 REF Toluene-d8 51 1 50.0 102 % 59-134 IE07023 EPA 6260D 05108121 08:18 REF 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 lEO5020 EPA 8260D 05/05/21 17:11 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.2 1 5.00 103 % 75-125 IE05020 EPA 8260D 05105121 17:11 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 27 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE06036 - EPA 5030E MS Blank (3E06036-BLK1) Prepared: 05/06/2021 15:57 Analyzed: 05/07/2021 06:56 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 48 u9/L 50.0 96 53-136 Dibromofluoromethane 44 u9/L 50.0 87 67-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 17 of 27 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE06036 - EPA 5030E MS - Continued Blank (SE06036-BLK3) Continued Prepared: 05/06/2021 15:57 Analyzed: 05/07/2021 06:56 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 51 u91L 50.0 103 59-134 LCS (1E06036-BS1) Prepared: 05/06/2021 15:57 Analyzed: 05/07/2021 05:03 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 90 75-133 Benzene 19 1.0 ug/L 20.0 93 80-134 Chlorobenzene 20 1.0 ug/L 20.0 100 80-120 Toluene 18 1.0 ug/L 20.0 92 71-120 Trichloroethene 20 1.0 ug/L 20.0 101 74-120 Matrix Spike (1E06036-MS1) Prepared: 05/06/2021 15:57 Analyzed: 05/07/2021 05:30 Source: CE06773-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 18 1.0 ug/L 20.0 0.21 U 90 75-133 Benzene 19 1.0 ug/L 20.0 0.15 U 96 80-134 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 102 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 93 71-120 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 105 74-120 Matrix Spike Dup (3E06036-MSD1) Prepared: 05/06/2021 15:57 Analyzed: 05/07/2021 05:57 Source: CE06773-01 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 85 75-133 6 20 Benzene 18 1.0 ug/L 20.0 0.15 U 90 80-134 6 17 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 97 80-120 5 16 Toluene 18 1.0 ug/L 20.0 0.14 U 88 71-120 6 17 Trichloroethene 20 1.0 ug/L 20.0 0.15 U 100 74-120 4 22 Batch lEO7023 - EPA 50306 MS Blank (lE07023-BLK1) Prepared: 05/07/2021 14:18 Analyzed: 05/08/2021 07:24 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 18 Of 27 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE07023 - EPA 5030E MS - Continued Blank (SE07023-BLK1) Continued Prepared: 05/07/2021 14:18 Analyzed: 05/08/2021 07:24 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 47 u91L 50.0 94 53-136 Dibromofluoromethane 43 u91L 50.0 66 67-129 Toluene-d8 52 u91L 50.0 103 59-134 LCS (1E07023-BS1) Prepared: 05/07/2021 14:18 Analyzed: 05/08/2021 05:36 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 18 1.0 ug/L 20.0 92 80-134 Chlorobenzene 20 1.0 ug/L 20.0 100 80-120 Toluene 18 1.0 ug/L 20.0 92 71-120 Trichloroethene 20 1.0 ug/L 20.0 101 74-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 19 Of 27 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE07023 - EPA 5030E MS - Continued (� �Eo www.encolabs.com Matrix Spike (3E07023-MS3) Prepared: 05/07/2021 14:18 Analyzed: 05/08/2021 06:03 Source: CE06773-02 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 93 75-133 Benzene 20 1.0 ug/L 20.0 0.15 U 102 80-134 Chlorobenzene 22 1.0 ug/L 20.0 0.17 U 109 80-120 Toluene 20 1.0 ug/L 20.0 0.14 U 102 71-120 Trichloroethene 22 1.0 ug/L 20.0 0.15 U 110 74-120 Matrix Spike Dup (1E07023-MSD1) Prepared: 05/07/2021 14:18 Analyzed: 05/08/2021 06:30 Source: CE06773-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 16 1.0 ug/L 20.0 0.21 U 78 75-133 17 20 Benzene 17 1.0 ug/L 20.0 0.15 U 87 80-134 16 17 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 93 80-120 16 16 Toluene 17 1.0 ug/L 20.0 0.14 U 86 71-120 16 17 Trichloroethene 19 1.0 ug/L 20.0 0.15 U 95 74-120 15 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE04034 - EPA 3005A Blank (1E04034-BLK1) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:01 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 (1E04034-BSI) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:07 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits Arsenic 210 10.0 ug/L 200 105 80-120 Barium 217 10.0 ug/L 200 109 80-120 Beryllium 20.5 1.00 ug/L 20.0 103 80-120 Cadmium 21.5 1.00 ug/L 20.0 108 80-120 Chromium 206 10.0 ug/L 200 103 80-120 Cobalt 211 10.0 ug/L 200 106 80-120 Copper 205 10.0 ug/L 200 102 80-120 Lead 210 10.0 ug/L 200 105 80-120 Nickel 218 10.0 ug/L 200 109 80-120 Selenium 213 10.0 ug/L 200 107 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 20 of 27 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE04034 - EPA 3005A - Continued LCS (lE04034-BSI) Continued Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Silver 209 10.0 ug/L 200 105 80-120 Vanadium 201 10.0 ug/L 200 101 80-120 Zinc 218 10.0 ug/L 200 109 80-120 Matrix Spike (1E04034-MS3) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:09 Source: CE03255-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 160 10.0 ug/L 200 7.60 U 80 75-125 Barium 398 10.0 ug/L 200 192 103 75-125 Beryllium 20.0 1.00 ug/L 20.0 0.160 U 100 75-125 Cadmium 15.9 1.00 ug/L 20.0 0.360 U 79 75-125 Chromium 197 10.0 ug/L 200 1.40 U 99 75-125 Cobalt 199 10.0 ug/L 200 6.54 96 75-125 Copper 162 10.0 ug/L 200 1.60 U 81 75-125 Lead 193 10.0 ug/L 200 3.10 U 96 75-125 Nickel 317 10.0 ug/L 200 122 97 75-125 Selenium 157 10.0 ug/L 200 6.20 U 79 75-125 Silver 210 10.0 ug/L 200 1.90 U 105 75-125 Vanadium 185 10.0 ug/L 200 1.40 U 92 75-125 Zinc 199 10.0 ug/L 200 4.40 U 99 75-125 Matrix Spike Dup (lE04034-MSD1) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:22 Source: CE03255-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 176 10.0 ug/L 200 7.60 U 88 75-125 10 20 Barium 418 10.0 ug/L 200 192 113 75-125 5 20 Beryllium 21.2 1.00 ug/L 20.0 0.160 U 106 75-125 6 20 Cadmium 16.8 1.00 ug/L 20.0 0.360 U 84 75-125 6 20 Chromium 209 10.0 ug/L 200 1.40 U 105 75-125 6 20 Cobalt 211 10.0 ug/L 200 6.54 102 75-125 6 20 Copper 174 10.0 ug/L 200 1.60 U 87 75-125 7 20 Lead 204 10.0 ug/L 200 3.10 U 102 75-125 6 20 Nickel 335 10.0 ug/L 200 122 106 75-125 5 20 Selenium 169 10.0 ug/L 200 6.20 U 84 75-125 7 20 Silver 223 10.0 ug/L 200 1.90 U 111 75-125 6 20 Vanadium 197 10.0 ug/L 200 1.40 U 99 75-125 6 20 Zinc 212 10.0 ug/L 200 4.40 U 106 75-125 6 20 Post Spike (lE04034-PSI) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:24 Source: CE03255-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.176 0.0100 mg/L 0.200 -0.0401 88 80-120 Barium 0.426 0.0100 mg/L 0.200 0.192 117 80-120 Beryllium 0.0215 0.00100 mg/L 0.0200 -0.000101 108 80-120 Cadmium 0.0173 0.00100 mg/L 0.0200 -0.00408 87 80-120 Chromium 0.213 0.0100 mg/L 0.200 0.000867 106 80-120 Cobalt 0.216 0.0100 mg/L 0.200 0.00654 105 80-120 Copper 0.179 0.0100 mg/L 0.200 -0.0447 90 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 21 of 27 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE04034 - EPA 3005A - Continued Post Spike (SE04034-PS1) Continued Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:24 Source: CE03255-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Lead 0.208 0.0100 mg/L 0.200 -0.00388 104 80-120 Nickel 0.342 0.0100 mg/L 0.200 0.122 110 80-120 Selenium 0.181 0.0100 mg/L 0.200 -0.0509 91 80-120 Silver 0.226 0.0100 mg/L 0.200 0.00179 112 80-120 Vanadium 0.200 0.0100 mg/L 0.200 -0.0127 100 80-120 Zinc 0.216 0.0100 mg/L 0.200 0.00100 108 80-120 Batch IE04035 - EPA 3005A Blank (lE04035-BLKI) Prepared: 05/04/2021 13:39 Analyzed: 05/05/2021 17:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (lE04035-BSI) Prepared: 05/04/2021 13:39 Analyzed: 05/05/2021 17:16 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 20.7 1.00 ug/L 20.0 104 80-120 Selenium 21.2 1.00 ug/L 20.0 106 80-120 Thallium 20.6 1.00 ug/L 20.0 103 80-120 Matrix Spike (1E04035-MS3) Prepared: 05/04/2021 13:39 Analyzed: 05/05/2021 17:21 Source: CE03255-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.0 2.00 ug/L 40.0 0.740 U 105 75-125 Selenium 36.9 2.00 ug/L 40.0 1.82 U 92 75-125 Thallium 40.1 2.00 ug/L 40.0 0.220 U 100 75-125 Matrix Spike Dup (lE04035-MSDI) Prepared: 05/04/2021 13:39 Analyzed: 05/05/2021 17:25 Source: CE03255-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 43.2 2.00 ug/L 40.0 0.740 U 108 75-125 3 20 Selenium 41.1 2.00 ug/L 40.0 1.82 U 103 75-125 11 20 Thallium 40.5 2.00 ug/L 40.0 0.220 U 101 75-125 1 20 Post Spike (SE04035-PS1) Prepared: 05/04/2021 13:39 Analyzed: 05/05/2021 17:29 Source: CE03255-02 Analvte Antimony Selenium Thallium Batch IE04036 - EPA 3005A Spike Result Flaq POL Units Level 23.7 1.00 ug/L 20.0 23.0 1.00 ug/L 20.0 23.0 1.00 ug/L 20.0 Source %REC Result %REC Limits RPD 0.0234 119 75-125 -0.196 115 75-125 0.00222 115 75-125 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 22 Of 27 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE04036 - EPA 3005A - Continued Blank (3E04036-BLK1) Prepared: 05/04/2021 13:44 Analyzed: 05/10/2021 18:11 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (lE04036-BSI) Prepared: 05/04/2021 13:44 Analyzed: 05/10/2021 18:16 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 20.1 1.00 ug/L 20.0 100 80-120 Selenium 19.3 1.00 ug/L 20.0 97 80-120 Thallium 20.7 1.00 ug/L 20.0 104 80-120 Matrix Spike (1E04036-MS3) Prepared: 05/04/2021 13:44 Analyzed: 05/10/2021 18:20 Source: CE03257-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.6 2.00 ug/L 40.0 0.740 U 107 75-125 Selenium 42.4 2.00 ug/L 40.0 1.82 U 106 75-125 Thallium 41.0 2.00 ug/L 40.0 0.220 U 103 75-125 Matrix Spike Dup (3E04036-MSD1) Prepared: 05/04/2021 13:44 Analyzed: 05/10/2021 18:24 Source: CE03257-04 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 105 75-125 1 20 Selenium 38.9 2.00 ug/L 40.0 1.82 U 97 75-125 9 20 Thallium 41.1 2.00 ug/L 40.0 0.220 U 103 75-125 0.04 20 Post Spike (IE04036-PS1) Prepared: 05/04/2021 13:44 Analyzed: 05/10/2021 18:29 Source: CE03257-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 24.0 1.00 ug/L 20.0 0.0517 120 75-125 Selenium 22.2 1.00 ug/L 20.0 -0.222 111 75-125 Thallium 23.2 1.00 ug/L 20.0 0.00518 116 75-125 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch IE05020 - EPA 5030E MS Blank (1E05020-BLK3) Prepared: 05/05/2021 00:00 Analyzed: 05/05/2021 09:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-& 5.0 ug/L 5.00 100 75-125 LCS (1E05020-BSI) Prepared: 05/05/2021 00:00 Analyzed: 05/05/2021 09:28 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 97 80-133 Toluene-d8 5.0 ug/L 5.00 100 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 23 Of 27 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch IE05020 - EPA 5030E MS - Continued Matrix Spike (1E05020-MS3) Prepared: 05/05/2021 00:00 Analyzed: 05/05/2021 18:02 Source: AE03651-01 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 96 80-133 Toluene-d8 5.1 ug/L 5.00 101 75-125 Matrix Spike Dup (3E05020-MSD1) Prepared: 05/05/2021 00:00 Analyzed: 05/05/2021 18:27 Source: AE03651-01 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 2 19 Toluene-d8 5.0 ug/L 5.00 101 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 24 Of 27 (� �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. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 25 of 27 n E LL Y/ w cc O a cc O m a J z Q 4 2 w z O U J z uj 2 z 0 ILY 7 z w a Cn Co cc E N C E Q°x c Cn W �' -o CU N E Ecc _ E 3 Q 1 I I ❑ ❑ ❑ W cc Z o U a a� cr �¢E C � U V C N � m c r N J d w R C� o m ¢ N y' a y � j U ¢ u u Z d ¢ ccE a 6 o = C S w UZh li ��4s'gd��N�n�•�'J�o's�P3�ae��6�sv�d NbS ax X x X X V a E o •"+ E E m o K UI VYIS OOBZB`Z XIPUeddy Oo9Z6 F � o ' o a N o al WiS GOQZ6`4 KIPuaddy MqZ$ X x X K J C0 U y "o m mro E o f a o c m x � 3 3. c °� ` s C a 9 V �° 9 N m Aa mIr E m E U m I �� ` I w a � E w P _� E c U �Il a ° p o 5 m �O/� `� i OQ a: Cc¢ U� c�'i E a CL a ¢ m 0 •� i N v 461 o ~ 0 l 1 I 1 W N 0 rn � ~ O O y E C ID Naw-/�� ii"' rc W T '— _ C� IL �z f pp M G ffi to ,m s � `I- a m Q E uT IGrl O C'7 0 Ln O c� O chi 0 m v n ` (� J m � w V- r- r T- r r- m a g O �� v v IT lw Q m/{ N V m W) Q N V } "' Y i� 3 C".. m y ~' E- E t' Page 26 of 27 LE - i c� Sample Preservation Verification u■ ENCO Cary 0 W, Work Order: CE03257 Project: White Street LF-Phase II Non -Routine Client: Golder Associates, Inc. (GO007) Project ##: 1668421 107 Logged In: 30-Apr-21 16:40 �` I Logged By: Rachel Ann onisi �11L 1f r1 Preservation Check Performed By: �_ Date/Time. C E03257-01 Cont Type Pres (pH) Requirement I pH Checked / t In Control pH Adjusted DateMme Adiusted Reagent Used/Comments A 250mLP+HNO3 2 Y -/ N / NA Y /(N ), NA CE03257-02 Cont Type Pres (pH) Requirement pH Checked / In Control pH Adjusted DatelTime Adiusted Reagent Used/Comments A 250mLP+HNO3 <2 Y,1 N / NA Y !(N ! NA CE03257-03 Cont Type Pres (pH) pH Checked 1 pH Adjusted DatelTime Reagent Used/Comments Requirement in Control Adjusted A 250rnLP+HNO3 <2 Y 1 N/ NA Y N/ NA C E03257-04 Cont Type Pres (pH) Requirement pH Checked / .In Control pH Adjusted Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y If N 1 NA Y N/ NA C E03257-05 Cant Type Pres (pH) pH Checked / pH Adjusted Date lTime Reagent Used/Comments Requirement , In Control I Adjusted A 250mLP+HNO3 <2 --Y ') N / NA Y 1( N r. NA Reaclent Name ID 1 2 Reaclent Name ID 3 4 Reagent Name 1 D 5 6 pH Strip ID: PH Strips COF0555 C:lelmntlPn,,.,—.,.,_, , _.. .._ pt Page 27 of 27 I WORK ORDER Printed: 5/3/2021 8:19:54AM CE03257 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase II Non -Routine Project Number: 19131339.103 PO #: Report To: Golder Associates, Inc. (G0007) Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 Phone: (336) 852-4903 Fax: (336) 852-4904 Invoice To: City of Greensboro (CI034) Richard Lovett 401 Patton Ave Greensboro, NC 27406 Phone :(336) 373-4188 Fax: Received By: David E. Wilder Date Received: 30-Apr-21 13:50 Logged In By: Rachel Ann Yonish Date Logged In: 30-Apr-21 16:40 Work Order Comments: C-2137 received at 1.7°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 4 Project Name: White Street Landfill — Phase II Project Reference Number: 19131339.103 Sampling Event Date: April 28-29, 2021 Review Date: June 15, 2021 Report #: CE03255 CE03256 CE03257 GOLDER MEMBER OF WSP Initials: TM QA/QC: n< Z' 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 FacilitylC & D List x NC Appendix I + 1,4-D, Tetra hydrofu ran, and MNA Parameters (not all wells) NC Appendix I + Detects NC Appendix li NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW TM COC was properly signed by all parties. TM Correct project name and number are on the form. Incorrected project number on CDC. Should be 19131339.103 TM Sample receipt condition at laboratory was acceptable. TM Each sample and blank submitted for analysis appears in the report. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 4 2.0 SAMPLE HOLDING TIMES TM Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). GILDER MEMBER OF W5P Review Criteria Method Anallyles Holding Time SW-846 Method 8260 and 8011 VMS 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVCCs, 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 require ents 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 410A - COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW TM Laboratory analyzed at least one internal blank for each method, where applicable. TM Laboratory blank is interference -free. TM Surrogate recoveries are provided for each analytical method, where applicable. TM Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range), TM MS/MSD/LCS data results are provided for each analytical method. f (CE03255) The 8260D LCS exhibited a high bias for 2-Butanone; however, this analyte was not detected in the associated samples. The Continuing Calibration Verification (CCV) exhibited a high bias for 2-Butanone, 4-Methyl-2-pentanone, Acrylonitrile, Chloroethane, and Vinyl acetate; however, these analytes were not detected in the associated samples. The precision between duplicate spikes of Benzene and Chlorobenzene exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these analytes. k (CE03256) The spike recoveries for Chloride, N ltrate/N it rite, Sulfate, and Sulfide were outside control limits for the MS and/or MSD samples, the precision between duplicate spikes of Chloride exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these analytes. The Fatty Acids Continuing Calibration Verification (CCV) exhibited a high bias for iso-Hexanoic Acid; however, this analyte was not detected in the associated samples. (CE03256) The precision between duplicate samples for Methane was outside of acceptance limits. TM MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL G O L D E R LABORATORY DATA REVIEW MEMBER OF WSP Page 3 of 4 4.0 ANALYTE LISTS/METHODS TM The proper number of constituents are present for each analyte list as identified above (including detects where applicable). TM Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING TM All analytical reporting associated with the event was performed by the contracted lab. TM Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been 'flagged' with a '13' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 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. TM 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. Y Antimony & Thallium: 2x @ all locations X 1,4-Dioxane: 5x ac II-1; 1Ox @a II-8 Chloride: 40x @ II-1; 5x SMW-3 Sulfate: 20x @ II-1; 5x @ II-9; 5x @ SMW-3 :, Total Alkalinity: 10x @ II-1; 5x C& SMW-3 TM The report provides the reporting limit for each constituent. TM 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, TM 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. Cadmium (NC 2L_=,2 ugrlL) * SMW-'I @7.7'0 ug/L Cobalt (lMAC =1 yg/L) • II-1 @ 26.3 ug/L * II-3 @ 10.3 ug/L ■ 11-38 @ 1.47 ug/L (J) * II-5 @ 4.32 ug/L (J) * I1-6 @ 2.06 ug1L (J) * II-8 @ 6.54 ug/L (J) + II-12 @ 5.31 ug/L (J) * SMW-1 @ 20.0 ug/L * SMW-3 @ 3.06 ug/L (J) Nickel (NC 2L = 100 usr/L) GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 4 of 4 * 11-8 0 122 uglL r Vanadium (IMAC = 0.3 ug/L) • MW-13 i@ 3.57 uglL (J) 11-5 @ 3.81 ug1L (J) Vinyl Chloride (NC 2L = 0.03 uq/L) • II-2 @ 1.3 uglL * SMW-3 @ 1.7 ug1L - 1.4-Dichlorobenzene (NC2L=6 uq/L) • II-1 @ 8.7 uglL ' - 1.4-Qioxane (NC 2L = 3.0 uuM * II-1 @ 170 uglL * II-313 @ 4.3 ugrL * II4A @ 49 uglL • II-6 @ 14 uglL Chloride (NC-2L = 250 ug/L) * SMW-1 @ 11.1 @ 400 mglL GILDER MEMBER OF WSP * 11.7 @ 7.0 uglL * 11-8 @ 340 ugrL • II-12 @ 3.6 uglL * SMW-4 @ 21 uglL TM 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). First time detection 1,4-dichlorobenzene @ $MW-3 >5x historical value Sulfate @ II-1 TM Other report issues/Communications with laboratory/etc.: ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Friday, May 14, 2021 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.103, Project Name/Desc: White Street LF-Phase I,II ENCO Workorder(s): CE03253 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Thursday, April 29, 2021. 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 ZO PROJECT NARRATIVE Date: May 14, 2021 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11 Lab ID: CE03253 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 LCS exhibited a high bias for 2-Butanone; however, this analyte was not detected in the associated samples. The precision between duplicate spikes of 1, 1 -Dichloroethene exceeded acceptance criteria. The QC batch was approved based on acceptable LCS recovery of this analyte. 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 20 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-MW33 Lab ID: CE03253-01 Sampled: 04/28/21 08:37 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/05/21 09:54 05/06/21 11:20 EPA 6020E EPA 3005A 10/25/21 05/05/21 14:08 05/11/21 16:37 EPA 7470A EPA 7470A 05/26/21 05/06/21 10:50 05/07/21 12:25 EPA 8260D EPA 503013_MS 05/12/21 05/07/21 20:21 05/08/21 08:39 Client ID: 4103-MW13 Lab ID: CE03253-01RE1 Sampled: 04/28/21 08:37 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/12/21 05/06/21 10:06 05/06/21 11:21 Client ID: 4103-SWS Lab ID: CE03253-02 Sampled: 04/28/21 16:13 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/25/21 05/05/21 09:54 05/06/21 12:11 EPA 6020E EPA 3005A 10/25/21 05/05/21 14:08 05/11/21 16:42 EPA 8260D EPA 503013_MS O5/12/21 05/05/21 09:24 05/05/21 10:50 EPA 8260D EPA 503013_MS 05/12/21 05/07/21 20:21 05/08/21 09:07 Client ID: Trip Blank Lab ID: CE03253-03 Sampled: 04/28/21 08:37 Received: 04/29/21 10:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/12/21 05/05/21 09:24 05/05/21 11:15 EPA 8260D EPA 503013_MS 05/12/21 05/07/21 20:21 05/08/21 05:52 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 20 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-MW33 Lab ID: CE03253-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 88.6 1.10 10.0 ug/L EPA 6010D Vanadium - Total 3.57 J 1.40 10.0 ug/L EPA 6010D Client ID: 4103-SWS Lab ID: CE03253-02 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 0.87 J 0.80 2.0 ug/L EPA 8260D Barium - Total 41.8 1.10 10.0 ug/L EPA 6010D Zinc - Total 6.52 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 4 Of 20 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CE03253-01 Received: 04/29/21 10:00 Matrix: Ground Water Sampled: 04/28/2108:37 Work Order: CE03253 Project: White Street LF-Phase I,II Sampled By: 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 IE07030 EPA 8260D 05/08/21 08:39 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 IE07030 EPA 8260D 05/08/21 08:39 RKY QL-02 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE07030 EPA 8260D 05/08/21 08:39 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Acetone [67-64-1]A 10 U ug/L 1 10 20 IE07030 EPA 8260D 05/08/21 08:39 RKY Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 IE07030 EPA 8260D 05/08/21 08:39 RKY Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Chlorobenzene[108-90-7]A 0.17 U ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Ethylbenzene[100-41-4]A 0.13 U ug/L 1 0.13 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Styrene[100-42-5]A 0.11 U ug/L 1 0.11 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 IE07030 EPA 8260D 05/08/21 08:39 RKY Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 IE07030 EPA 8260D 05/08/21 08:39 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 20 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CE03253-01 Received: 04/29/21 10:00 Matrix: Ground Water Sampled: 04/28/2108:37 Work Order: CE03253 Project: White Street LF-Phase I,II Sampled By: 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 lE07030 EPA 8260D 05/08/21 08:39 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 53 1 50.0 107 % 53-136 IE07030 EPA 6260D 05106121 08:39 RKY Dlbromofluoromethane 48 1 50.0 96 % 67-129 IE07030 EPA 6260D 05106121 08:39 RKY Toluene-c48 52 1 50.0 105 % 59-134 IE07030 EPA 6260D 05108121 08:39 RKY Metals 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 Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 lE06018 EPA 7470A 05/07/21 12:25 KAH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 lEO5031 EPA 6020B 05/11/21 16:37 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lEO5016 EPA 6010D 05/06/21 11:20 JDH Barium [7440-39-3]A 88.6 ug/L 1 1.10 10.0 lE05016 EPA 6010D 05/06/21 11:20 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lEO5016 EPA 6010D 05/06/21 11:20 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lEO5016 EPA 6010D 05/06/21 11:20 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 lEO5016 EPA 6010D 05/06/21 11:20 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 lEO5016 EPA 6010D 05/06/21 11:20 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lEO5016 EPA 6010D 05/06/21 11:20 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lEO5016 EPA 6010D 05/06/21 11:20 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 lEO5016 EPA 6010D 05/06/21 11:20 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lEO5016 EPA 6010D 05/06/21 11:20 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lEO5016 EPA 6010D 05/06/21 11:20 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lEO5031 EPA 6020B 05/11/21 16:37 RLF Vanadium [7440-62-2]^ 3.57 J ug/L 1 1.40 10.0 lE05016 EPA 6010D 05/06/21 11:20 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 lEO5016 EPA 6010D 05/06/21 11:20 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 Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 0.80 U ug/L 1 0.80 2.0 lE06020 EPA 8260D 05/06/21 11:21 KKW Results DF Soike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes 5.2 1 5.00 103 % 75-125 IE06020 EPA 8260D 05106121 11:21 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 20 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SW5 Lab Sample ID:CE03253-02 Received: 04/29/21 10:00 Matrix: Surface Water Sampled:04/28/21 16:13 Work Order: CE03253 Project: White Street LF-Phase I,II Sampled By:T. Martinez/J.Tejeda-Torre: 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 IE07030 EPA 8260D 05/08/21 09:07 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 IE07030 EPA 8260D 05/08/21 09:07 RKY QL-02 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 IE07030 EPA 8260D 05/08/21 09:07 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 IE07030 EPA 8260D 05/08/21 09:07 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 IE07030 EPA 8260D 05/08/21 09:07 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Styrene[100-42-5]A 0.11 U ug/L 1 0.11 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 IE07030 EPA 8260D 05/08/21 09:07 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 IE07030 EPA 8260D 05/08/21 09:07 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 20 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SW5 Lab Sample ID:CE03253-02 Received: 04/29/21 10:00 Matrix: Surface Water Sampled:04/28/21 16:13 Work Order: CE03253 Project: White Street LF-Phase I,II Sampled By:T. Martinez/J.Tejeda-Torre: 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 51 1 50.0 102 % 53-136 IE07030 EPA 6260D 05106121 09:07 RKY Dibromofluoromethane 48 1 50.0 96 % 67-129 IE07030 EPA 6260D 05108121 09:07 RKY Toluene-d8 53 1 50.0 106 % 59-134 IE07030 EPA 6260D 05108121 09:07 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 lEO5031 EPA 6020B 05/11/21 16:42 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lEO5016 EPA 6010D 05/06/21 12:11 JDH Barium [7440-39-3]^ 41.8 ug/L 1 1.10 10.0 lE05016 EPA 6010D 05/06/21 12:11 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lEO5016 EPA 6010D 05/06/21 12:11 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lEO5016 EPA 6010D 05/06/21 12:11 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 lEO5016 EPA 6010D 05/06/21 12:11 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 lEO5016 EPA 6010D 05/06/21 12:11 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lEO5016 EPA 6010D 05/06/21 12:11 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lEO5016 EPA 6010D 05/06/21 12:11 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 lEO5016 EPA 6010D 05/06/21 12:11 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lEO5016 EPA 6010D 05/06/21 12:11 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lEO5016 EPA 6010D 05/06/21 12:11 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lEO5031 EPA 6020B 05/11/21 16:42 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lEO5016 EPA 6010D 05/06/21 12:11 JDH Zinc[7440-66-6]^ 6.52 J ug/L 1 4.40 10.0 lE05016 EPA 6010D 05/06/21 12:11 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes 1,4-Dioxane [123-91-1]^ 0.87 J ug/L 1 0.80 2.0 lE05020 EPA 8260D 05/05/21 10:50 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.1 1 5.00 102 % 75-125 lEO5020 EPA 8260D 05105121 10:50 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 2O 00� www.encolabs.com ANALYTICAL RESULTS Description: Trip Blank Lab Sample ID:CE03253-03 Received: 04/29/21 10:00 Matrix: Water Sampled: 04/28/2108:37 Work Order: CE03253 Project: White Street LF-Phase I,II 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 IE07030 EPA 8260D 05/08/21 05:52 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 IE07030 EPA 8260D 05/08/21 05:52 RKY QL-02 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE07030 EPA 8260D 05/08/21 05:52 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Acetone [67-64-1]A 10 U ug/L 1 10 20 IE07030 EPA 8260D 05/08/21 05:52 RKY Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 IE07030 EPA 8260D 05/08/21 05:52 RKY Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Chlorobenzene[108-90-7]A 0.17 U ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Ethylbenzene[100-41-4]A 0.13 U ug/L 1 0.13 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Styrene[100-42-5]A 0.11 U ug/L 1 0.11 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 IE07030 EPA 8260D 05/08/21 05:52 RKY Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 IE07030 EPA 8260D 05/08/21 05:52 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 20 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: Trip Blank Lab Sample ID:CE03253-03 Received: 04/29/21 10:00 Matrix: Water Sampled: 04/28/2108:37 Work Order: CE03253 Project: White Street LF-Phase I,II 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 lE07030 EPA 8260D 05/08/21 05:52 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 53 1 50.0 106 % 53-136 IE07030 EPA 6260D 05106121 05:52 RKY Dibromofluoromethane 47 1 50.0 95 % 67-129 IE07030 EPA 6260D 05106121 05:52 RKY Toluene-d8 54 1 50.0 108 % 59-134 IE07030 EPA 6260D 05108121 05:52 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 lEO5020 EPA 8260D 05/05/21 11:15 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 101 % 75-125 lEO5020 EPA 8260D 05105121 11:15 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 Of 20 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE07030 - EPA 5030E MS Blank (3E07030-BLK1) Prepared: 05/07/2021 20:21 Analyzed: 05/08/2021 05:24 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 53 ug/L 50.0 107 53-136 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 11 Of 20 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE07030 - EPA 5030E MS - Continued (� �Eo www.encolabs.com Blank (IE07030-BLK3) Continued Prepared: 05/07/2021 20:21 Analyzed: 05/08/2021 05:24 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Dibromofluoromethane 46 u91L 50.0 92 67-129 Toluene-& 52 u91L 50.0 105 59-134 LCS (3E07030-BS1) Prepared: 05/07/2021 20:21 Analyzed: 05/08/2021 03:33 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 93 75-133 Benzene 21 1.0 ug/L 20.0 103 80-134 Chlorobenzene 20 1.0 ug/L 20.0 98 80-120 Toluene 20 1.0 ug/L 20.0 99 71-120 Trichloroethene 20 1.0 ug/L 20.0 99 74-120 Matrix Spike (3E07030-MS1) Prepared: 05/07/2021 20:21 Analyzed: 05/08/2021 04:00 Source: CE06773-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 24 1.0 ug/L 20.0 0.21 U 118 75-133 Benzene 24 1.0 ug/L 20.0 0.15 U 118 80-134 Chlorobenzene 22 1.0 ug/L 20.0 0.17 U 108 80-120 Toluene 22 1.0 ug/L 20.0 0.14 U 110 71-120 Trichloroethene 23 1.0 ug/L 20.0 0.15 U 113 74-120 Matrix Spike Dup (3E07030-MSD1) Prepared: 05/07/2021 20:21 Analyzed: 05/08/2021 04:28 Source: CE06773-04 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 24 20 QM-11 Benzene 20 1.0 ug/L 20.0 0.15 U 102 80-134 15 17 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 93 80-120 15 16 Toluene 19 1.0 ug/L 20.0 0.14 U 94 71-120 16 17 Trichloroethene 20 1.0 ug/L 20.0 0.15 U 101 74-120 11 22 Metals by EPA 6000/7000 Series Methods - Quality Control Batch lEO6018 - EPA 7470A Blank (lE06018-BLK1) Prepared: 05/06/2021 10:50 Analyzed: 05/07/2021 11:43 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 0.150 U 0.200 ug/L Blank (3E06018-BLK2) Prepared: 05/06/2021 10:50 Analyzed: 05/07/2021 11:46 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 3.00 U 4.00 ug/L LCS (lE06018-BSI) Prepared: 05/06/2021 10:50 Analyzed: 05/07/2021 11:48 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.37 0.200 ug/L 5.00 107 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 12 Of 20 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals by EPA 6000/7000 Series Methods - Quality Control Batch IE06018 - EPA 7470A - Continued Matrix Spike (lE06018-MS1) Prepared: 05/06/2021 10:50 Analyzed: 05/07/2021 11:53 Source: CE03252-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.18 0.200 ug/L 5.00 0.150 U 104 75-125 Matrix Spike Dup (3E06018-MSD1) Prepared: 05/06/2021 10:50 Analyzed: 05/07/2021 11:55 Source: CE03252-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.19 0.200 ug/L 5.00 0.150 U 104 75-125 0.2 25 Post Spike (lE06018-PSI) Prepared: 05/06/2021 10:50 Analyzed: 05/07/2021 11:57 Source: CE03252-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.37 0.200 ug/L 5.00 0.0280 107 75-125 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE05016 - EPA 3005A Blank (3E05016-BLK3) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:13 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L Blank (1E05016-BLK2) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:18 Analvte Arsenic Barium Beryllium Cadmium Chromium Cobalt Copper Lead Nickel Selenium Silver Vanadium Result Flaq POL Units 7.60 U 10.0 ug/L 1.10 U 10.0 ug/L 0.160 U 1.00 ug/L 0.360 U 1.00 ug/L 1.40 U 10.0 ug/L 1.40 U 10.0 ug/L 1.60 U 10.0 ug/L 3.10 U 10.0 ug/L 2.20 U 10.0 ug/L 6.20 U 10.0 ug/L 1.90 U 10.0 ug/L 1.40 U 10.0 ug/L Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 of 2O 0Nk"q09 www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE05016 - EPA 3005A - Continued Blank (1E05016-BLK2) Continued Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:18 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Zinc 4.40 U 10.0 ug/L LCS (1E05016-BS1) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:58 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 214 10.0 ug/L 200 107 80-120 Barium 223 10.0 ug/L 200 112 80-120 Beryllium 21.0 1.00 ug/L 20.0 105 80-120 Cadmium 21.3 1.00 ug/L 20.0 106 80-120 Chromium 215 10.0 ug/L 200 108 80-120 Cobalt 217 10.0 ug/L 200 109 80-120 Copper 212 10.0 ug/L 200 106 80-120 Lead 218 10.0 ug/L 200 109 80-120 Nickel 222 10.0 ug/L 200 111 80-120 Selenium 211 10.0 ug/L 200 105 80-120 Silver 211 10.0 ug/L 200 106 80-120 Vanadium 210 10.0 ug/L 200 105 80-120 Zinc 220 10.0 ug/L 200 110 80-120 Matrix Spike (3E05016-MS3) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:25 Source: CE03253-01 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes Arsenic 162 10.0 ug/L 200 7.60 U 81 75-125 Barium 260 10.0 ug/L 200 88.6 86 75-125 Beryllium 16.9 1.00 ug/L 20.0 0.160 U 84 75-125 Cadmium 16.8 1.00 ug/L 20.0 0.360 U 84 75-125 Chromium 166 10.0 ug/L 200 1.40 U 83 75-125 Cobalt 167 10.0 ug/L 200 1.40 U 84 75-125 Copper 162 10.0 ug/L 200 1.60 U 81 75-125 Lead 168 10.0 ug/L 200 3.10 U 84 75-125 Nickel 171 10.0 ug/L 200 2.20 U 85 75-125 Selenium 178 10.0 ug/L 200 6.20 U 89 75-125 Silver 167 10.0 ug/L 200 1.90 U 83 75-125 Vanadium 168 10.0 ug/L 200 3.57 82 75-125 Zinc 175 10.0 ug/L 200 4.40 U 88 75-125 Matrix Spike (1E05016-MS2) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:37 Source: CE03253-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limi RPD Limit Notes Arsenic 170 10.0 ug/L 200 7.60 U 85 75-125 Barium 218 10.0 ug/L 200 41.8 88 75-125 Beryllium 17.0 1.00 ug/L 20.0 0.160 U 85 75-125 Cadmium 16.9 1.00 ug/L 20.0 0.360 U 85 75-125 Chromium 169 10.0 ug/L 200 1.40 U 85 75-125 Cobalt 171 10.0 ug/L 200 1.40 U 85 75-125 Copper 165 10.0 ug/L 200 1.60 U 83 75-125 Lead 170 10.0 ug/L 200 3.10 U 85 75-125 Nickel 175 10.0 ug/L 200 2.20 U 88 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 20 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE05016 - EPA 3005A - Continued Matrix Spike (1E05016-MS2) Continued Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:37 Source: CE03253-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Selenium 181 10.0 ug/L 200 6.20 U 91 75-125 Silver 168 10.0 ug/L 200 1.90 U 84 75-125 Vanadium 168 10.0 ug/L 200 1.40 U 84 75-125 Zinc 181 10.0 ug/L 200 6.52 87 75-125 Matrix Spike Dup (3E05016-MSD1) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:27 Source: CE03253-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 165 10.0 ug/L 200 7.60 U 83 75-125 2 20 Barium 257 10.0 ug/L 200 88.6 84 75-125 1 20 Beryllium 16.7 1.00 ug/L 20.0 0.160 U 84 75-125 0.9 20 Cadmium 16.5 1.00 ug/L 20.0 0.360 U 83 75-125 2 20 Chromium 165 10.0 ug/L 200 1.40 U 82 75-125 0.9 20 Cobalt 165 10.0 ug/L 200 1.40 U 83 75-125 1 20 Copper 161 10.0 ug/L 200 1.60 U 81 75-125 0.6 20 Lead 165 10.0 ug/L 200 3.10 U 82 75-125 2 20 Nickel 168 10.0 ug/L 200 2.20 U 84 75-125 1 20 Selenium 172 10.0 ug/L 200 6.20 U 86 75-125 3 20 Silver 166 10.0 ug/L 200 1.90 U 83 75-125 0.7 20 Vanadium 167 10.0 ug/L 200 3.57 82 75-125 0.7 20 Zinc 173 10.0 ug/L 200 4.40 U 86 75-125 2 20 Post Spike (1E05016-PSI) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:30 Source: CE03253-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.163 0.0100 mg/L 0.200 -0.00375 81 80-120 Barium 0.261 0.0100 mg/L 0.200 0.0886 86 80-120 Beryllium 0.0171 0.00100 mg/L 0.0200 3.62E-5 85 80-120 Cadmium 0.0170 0.00100 mg/L 0.0200 0.000221 84 80-120 Chromium 0.168 0.0100 mg/L 0.200 0.000337 84 80-120 Cobalt 0.170 0.0100 mg/L 0.200 0.000669 85 80-120 Copper 0.163 0.0100 mg/L 0.200 -0.00331 82 80-120 Lead 0.170 0.0100 mg/L 0.200 0.00276 84 80-120 Nickel 0.173 0.0100 mg/L 0.200 0.000532 86 80-120 Selenium 0.181 0.0100 mg/L 0.200 0.00242 89 80-120 Silver 0.164 0.0100 mg/L 0.200 -0.000827 82 80-120 Vanadium 0.170 0.0100 mg/L 0.200 0.00357 83 80-120 Zinc 0.178 0.0100 mg/L 0.200 0.00248 88 80-120 Batch IE05031 - EPA 3005A Blank (3E05031-BLK1) Prepared: 05/05/2021 14:08 Analyzed: 05/11/2021 16:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 15 of 20 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE05031 - EPA 3005A - Continued LCS (1E05031-BS1) Prepared: 05/05/2021 14:08 Analyzed: 05/11/2021 16:16 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 Selenium 21.6 1.00 ug/L 20.0 108 80-120 Thallium 20.9 1.00 ug/L 20.0 105 80-120 Matrix Spike (1E05031-MS3) Prepared: 05/05/2021 14:08 Analyzed: 05/11/2021 16:20 Source: CE05398-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 41.3 2.00 ug/L 40.0 0.740 U 103 75-125 Selenium 40.5 2.00 ug/L 40.0 1.82 U 101 75-125 Thallium 41.7 2.00 ug/L 40.0 0.220 U 104 75-125 Matrix Spike Dup (1E05031-MSDS) Prepared: 05/05/2021 14:08 Analyzed: 05/11/2021 16:25 Source: CE05398-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 41.2 2.00 ug/L 40.0 0.740 U 103 75-125 0.2 20 Selenium 41.1 2.00 ug/L 40.0 1.82 U 103 75-125 2 20 Thallium 41.6 2.00 ug/L 40.0 0.220 U 104 75-125 0.2 20 Post Spike (SE05031-PSI) Prepared: 05/05/2021 14:08 Analyzed: 05/11/2021 16:29 Source: CE05398-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 23.4 1.00 ug/L 20.0 0.0152 117 75-125 Selenium 21.5 1.00 ug/L 20.0 -0.301 107 75-125 Thallium 23.8 1.00 ug/L 20.0 0.0198 119 75-125 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch IE05020 - EPA 5030E MS Blank (3E05020-BLK3) Prepared: 05/05/2021 00:00 Analyzed: 05/05/2021 09:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-& 5.0 ug/L 5.00 100 75-125 LCS (1E05020-BSI) Prepared: 05/05/2021 00:00 Analyzed: 05/05/2021 09:28 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 97 80-133 Toluene-& 5.0 ug/L 5.00 100 75-125 Matrix Spike (3E05020-MS1) Prepared: 05/05/2021 00:00 Analyzed: 05/05/2021 18:02 Source: CE03253-01 Spike Source %REC RPD Analvte Result Flaa Q Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 96 80-133 Toluene-& 5.1 ug/L 5.00 101 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 16 Of 20 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch IE05020 - EPA 5030E MS - Continued Matrix Spike Dup (3E05020-MSD1) Prepared: 05/05/2021 00:00 Analyzed: 05/05/2021 18:27 Source: CE03253-01 Analvte Result Flaq 1,4-Dioxane 24 POL Units 2.0 ug/L Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes 25.0 0.80 U 95 80-133 2 19 Toluene-d8 5.0 Batch IE06020 - EPA 5030E MS ug/L 5.00 101 75-125 Blank (3E06020-BLK3) Prepared: 05/06/2021 00:00 Analyzed: 05/06/2021 10:14 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 ug/L 5.00 103 75-125 LCS (3E06020-BS1) Prepared: 05/06/2021 00:00 Analyzed: 05/06/2021 09:49 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 96 80-133 Toluene-d8 5.0 ug/L 5.00 99 75-125 Matrix Spike (3E06020-MS1) Prepared: 05/06/2021 00:00 Analyzed: 05/06/2021 19:24 Source: AE03752-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 190 2.0 ug/L 25.0 170 83 80-133 Toluene-d8 5.0 ug/L 5.00 101 75-125 Matrix Spike Dup (3E06020-MSD1) Prepared: 05/06/2021 00:00 Analyzed: 05/06/2021 19:49 Source: AE03752-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 190 2.0 ug/L 25.0 170 91 80-133 1 19 Toluene-d8 5.0 ug/L 5.00 100 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 17 Of 20 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QL-02 The associated laboratory control sample exhibited high bias; since the result is ND, there is no impact. QM-11 Precision between duplicate matrix spikes of the same sample was outside acceptance limits. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 18 of 2O l ) E V y �o 0 V c w cc 0 L) W 0 U li 0 Z a L) U3 LU cc O Q CC O m z O RQ It w U) z 0 LJ r z w z 0 cc 9 z W ._ o s � �I as a �, ^I a�i E o N --� c Q a E x 0 �- Ui W m '� U w m E r-- E 91 E n Y O ate` C` � d c W ❑ O O 2 U Q Q U c j Q o � / O y U � o U a a p m O c Z � 0 E Z � C � - f} Z � C # C m e Q U m m d m uni 1 u N m `o v d � z m m m T ¢ cc z E Q a BH s yC � c U y UZ'A'IIVS x X p6'VS'gd`IN'��'X!'Q'J'PJ'a9'�BgV`ed °' c c U E v' E E w m a fli Wls 00999' l xlPueddr1 MgZ13 c Cil ms WOEWAOPuw�X3 ODW I MUOMW DGWR J _ g R � cn p72 Q 2 4 n m Q U o r p� O A N mCl) m � N W U $ m A6� o N N 4ZL1 O E in 0 o V N C ^V CM z C 4J d` C a a ww m *' m a V� ❑ VI Q y U? rn c N mLa 2 % o (i E N a o m mm a CAN r�0 e 20 a Ep E E Page 19 of - Sample Preservation Verification ENCO Cary Work Order: CE03253 Project: White Street LF-Phase 1,11 Client: Golder Associates, Inc. (GO007) Project#: 1668421.106 Logged In: 29-Apr-21 11:27 Logged By: Rachel Ann Y nish _ Preservation Check Performed By: Date/Time:r�2 CE03253-01 Cant Type Pres (pH) Requirement pH Checked/ In Control pH Adjusted Date/Time I Adjusted Reagent UsedlComments A 25pmLP+HNO3 <2 Y I N I NA I Y N NA CE03253-02 Cont Type Pres (pH) Requirement pH Checked / In Control I pH Adjusted DatelTime Adjusted Reagent Used/Comments A 250rnLP+HNO3 <2 Y,1 N t NA I Y !' N 1 NA Rea ent Name ID 1 2 Reaclent Name ID 3 4 Rea ent Name D _ 5 6 pH Strip ID: PH Strips COFOSS5 C:lelmnt\Prin....,..,_ Page 20 of 20 WORK ORDER Printed: 4/30/2021 8:59:34AM CE03253 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Not Assigned Project: White Street LF-Phase I,II Project Number: 19131339.103 PO #: Report To: Golder Associates, Inc. (G0007) Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 Phone: (336) 852-4903 Fax: (336) 852-4904 Invoice To: City of Greensboro (CI034) Richard Lovett 401 Patton Ave Greensboro, NC 27406 Phone :(336) 373-4188 Fax: Received By: Rachel Ann Yonish Date Received: 29-Apr-21 10:00 Logged In By: Rachel Ann Yonish Date Logged In: 29-Apr-21 11:27 Work Order Comments: White 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 Thursday, May 20, 2021 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.103, Project Name/Desc: White Street LF-Phase I,II,III SW ENCO Workorder(s): CE06418,CE07003 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory between Friday, April 30, 2021 and Tuesday, May 11, 2021. 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 3O PROJECT NARRATIVE Date: May 20, 2021 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11,111 SW Lab ID: CE06418 CE07003 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 LCS exhibited a high bias for 2-Butanone; however, this analyte was not detected in the associated samples. The Continuing Calibration Verification (CCV) exhibited a high bias for 1,1-Dichloroethane, 2-Butanone, 4-Methyl-2-pentanone, Acrylonitrile, Bromomethane, Chloroethane, cis- 1,3-Dichloropropene, trnas-1,4-Dichloro-2-butene, and Vinyl acetate; however, these analytes were not detected in the associated samples. The precision between duplicate spikes of Benzene and Chlorobenzene exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these analytes. 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 30 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303/12-SW3 Lab ID: CE06418-01 Sampled: 04/29/21 14:15 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/26/21 05/04/21 13:33 05/05/21 14:30 EPA 6020E EPA 3005A 10/26/21 05/04/21 13:44 05/11/21 15:11 EPA 8260D EPA 503013_MS 05/13/21 05/05/21 09:24 05/05/21 13:48 EPA 8260D EPA 503013_MS 05/13/21 05/10/21 15:13 05/10/21 23:59 Client ID: 4303/12-SW2 Lab ID: CE06418-02 Sampled: 04/29/21 13:50 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/26/21 05/05/21 09:54 05/06/21 13:52 EPA 6020E EPA 3005A 10/26/21 05/04/21 13:44 05/11/21 15:15 EPA 8260D EPA 503013_MS O5/13/21 05/05/21 09:24 05/05/21 14:13 EPA 8260D EPA 503013_MS 05/13/21 05/10/21 15:13 05/11/21 00:27 Client ID: 4303/12-SW4 Lab ID: CE06418-03 Sampled: 04/29/21 13:09 Received: 04/30/21 13:50 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/26/21 05/05/21 09:54 05/06/21 13:55 EPA 6020B EPA 3005A 10/26/21 05/05/21 14:08 05/11/21 18:15 EPA 8260D EPA 503013_MS 05/13/21 05/05/21 09:24 05/05/21 14:39 EPA 8260D EPA 5030B_MS 05/13/21 05/10/21 15:13 05/11/21 00:55 Client ID: 4103/12-SW3 Lab ID: CE07003-01 Sampled: 05/07/21 10:15 Received: 05/11/21 11:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 11/03/21 05/11/21 11:21 05/12/21 14:32 EPA 6020B EPA 3005A 11/03/21 05/12/21 15:21 05/19/21 14:21 EPA 8260D EPA 503013_MS 05/21/21 05/14/21 00:00 05/14/21 18:26 EPA 8260D EPA 503013_MS 05/21/21 05/17/21 14:11 05/18/21 00:13 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 30 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303/12-SW3 Lab ID: CE06418-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 47.5 1.10 10.0 ug/L EPA 6010D Chromium - Total 2.29 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 6.18 J 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW2 Lab ID: CE06418-02 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.7 J 0.80 2.0 ug/L EPA 8260D Barium - Total 42.5 1.10 10.0 ug/L EPA 6010D Client ID: 4303/12-SW4 Lab ID: CE06418-03 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.0 J 0.80 2.0 ug/L EPA 8260D Barium - Total 45.0 1.10 10.0 ug/L EPA 6010D Zinc - Total 5.98 J 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW3 Lab ID: CE07003-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 41.6 1.10 10.0 ug/L EPA 6010D Zinc - Total 4.48 1 4.40 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 30 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW1 Lab Sample ID:CE06418-01 Received: 04/30/21 13:50 Matrix: Surface Water Sampled:04/29/21 14:15 Work Order: CE06418 Project: White Street LF-Phase I,II,III SW Sampled By:T. Martinez/].Tejeda-Torre: 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 IE10018 EPA 8260D 05/10/21 23:59 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY 1,1-Dichloroethane [75-34-3]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY 1,1-Dichloroethene [75-35-4]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY 1,2,3-Trichloropropane [96-18-4]A 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 u ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY 1,2-Dibromoethane [106-93-4]A 0.66 u ug/L 1 0.66 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY 1,2-Dichlorobenzene [95-50-1]A 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY 1,2-Dichloroethane [107-06-2]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY 1,2-Dichloropropane [78-87-5]A 0.10 u ug/L 1 0.10 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY 1,4-Dichlorobenzene [106-46-7]A 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 IE10018 EPA 8260D 05/10/21 23:59 RKY QL-02, QV-01 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE10018 EPA 8260D 05/10/21 23:59 RKY 4-Methyl-2-pentanone [108-10-1]A 1.1 U ug/L 1 1.1 5.0 IE10018 EPA 8260D 05/10/21 23:59 RKY QV-01 Acetone[67-64-1]A 10 U ug/L 1 10 20 IE10018 EPA 8260D 05/10/21 23:59 RKY Acrylonitrile [107-13-1]A 3.5 U ug/L 1 3.5 10 IE10018 EPA 8260D 05/10/21 23:59 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Bromodichloromethane [75-27-4]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Bromoform [75-25-2]A 0.22 U ug/L 1 0.22 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY QV-01 Chloroform [67-66-3]A 0.18 u ug/L 1 0.18 1.0 1E10018 EPA 8260D 05/10/21 23:59 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY cis-1,2-Dichloroethene [156-59-2]A 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Iodomethane [74-88-4]A 1.7 U ug/L 1 1.7 5.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Toluene [108-88-3]A 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY trans-1,2-Dichloroethene [156-60-5]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY trans-1,3-Dichloropropene [10061-02-6]A 0.15 U ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Trichloroethene [79-01-6]A 0.15 U ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Trichlorofluoromethane [75-69-4]A 0.24 U ug/L 1 0.24 1.0 IE10018 EPA 8260D 05/10/21 23:59 RKY Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 IE10018 EPA 8260D 05/10/21 23:59 RKY QV-01 Vinyl chloride [75-01-4]A 0.32 u ug/L 1 0.32 1.0 1E10018 EPA 8260D 05/10/21 23:59 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 30 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW1 Lab Sample ID:CE06418-01 Received: 04/30/21 13:50 Matrix: Surface Water Sampled:04/29/21 14:15 Work Order: CE06418 Project: White Street LF-Phase I,II,III SW Sampled By:T. Martinez/J.Tejeda-Torre: 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 lE10018 EPA 8260D 05/10/21 23:59 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 52 1 50.0 104 % 53-136 IE10018 EPA 6260D 05110121 23:59 RKY Dibromofluoromethane 53 1 50.0 105 % 67-129 IE10018 EPA 6260D 05110121 23:59 RKY Toluene-d8 53 1 50.0 107 % 59-134 IE10018 EPA 6260D 05110121 23:59 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 lE04036 EPA 6020B 05/11/21 15:11 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lE04034 EPA 6010D 05/05/21 14:30 JDH Barium [7440-39-3]^ 47.5 ug/L 1 1.10 10.0 lE04034 EPA 6010D 05/05/21 14:30 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lE04034 EPA 6010D 05/05/21 14:30 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lE04034 EPA 6010D 05/05/21 14:30 JDH Chromium [7440-47-3]^ 2.29 J ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 14:30 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 14:30 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lE04034 EPA 6010D 05/05/21 14:30 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lE04034 EPA 6010D 05/05/21 14:30 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 lE04034 EPA 6010D 05/05/21 14:30 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lE04034 EPA 6010D 05/05/21 14:30 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lE04034 EPA 6010D 05/05/21 14:30 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04036 EPA 6020B 05/11/21 15:11 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lE04034 EPA 6010D 05/05/21 14:30 JDH Zinc[7440-66-6]^ 6.18 J ug/L 1 4.40 10.0 lE04034 EPA 6010D 05/05/21 14:30 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 lEO5020 EPA 8260D 05/05/21 13:48 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.1 1 5.00 101 % 75-125 lEO5020 EPA 8260D 05105121 13:48 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 30 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW2 Lab Sample ID:CE06418-02 Received: 04/30/21 13:50 Matrix: Surface Water Sampled:04/29/21 13:50 Work Order: CE06418 Project: White Street LF-Phase I,II,III SW Sampled By:T. Martinez/].Tejeda-Torre: 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 IE10018 EPA 8260D 05/11/21 00:27 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY 1,1-Dichloroethane [75-34-3]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY 1,1-Dichloroethene [75-35-4]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY 1,2,3-Trichloropropane [96-18-4]A 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 u ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY 1,2-Dibromoethane [106-93-4]A 0.66 u ug/L 1 0.66 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY 1,2-Dichlorobenzene [95-50-1]A 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY 1,2-Dichloroethane [107-06-2]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY 1,2-Dichloropropane [78-87-5]A 0.10 u ug/L 1 0.10 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY 1,4-Dichlorobenzene [106-46-7]A 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 IE10018 EPA 8260D 05/11/21 00:27 RKY QL-02, QV-01 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE10018 EPA 8260D 05/11/21 00:27 RKY 4-Methyl-2-pentanone [108-10-1]A 1.1 U ug/L 1 1.1 5.0 IE10018 EPA 8260D 05/11/21 00:27 RKY QV-01 Acetone[67-64-1]A 10 U ug/L 1 10 20 IE10018 EPA 8260D 05/11/21 00:27 RKY Acrylonitrile [107-13-1]A 3.5 U ug/L 1 3.5 10 1E10018 EPA 8260D 05/11/21 00:27 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Bromodichloromethane [75-27-4]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Bromoform [75-25-2]A 0.22 U ug/L 1 0.22 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY QV-01 Chloroform [67-66-3]A 0.18 u ug/L 1 0.18 1.0 1E10018 EPA 8260D 05/11/21 00:27 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY cis-1,2-Dichloroethene [156-59-2]A 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Iodomethane [74-88-4]A 1.7 U ug/L 1 1.7 5.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Toluene [108-88-3]A 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY trans-1,2-Dichloroethene [156-60-5]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY trans-1,3-Dichloropropene [10061-02-6]A 0.15 U ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Trichloroethene [79-01-6]A 0.15 U ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Trichlorofluoromethane [75-69-4]A 0.24 U ug/L 1 0.24 1.0 IE10018 EPA 8260D 05/11/21 00:27 RKY Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 IE10018 EPA 8260D 05/11/21 00:27 RKY QV-01 Vinyl chloride [75-01-4]A 0.32 u ug/L 1 0.32 1.0 1E10018 EPA 8260D 05/11/21 00:27 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 30 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW2 Lab Sample ID:CE06418-02 Received: 04/30/21 13:50 Matrix: Surface Water Sampled:04/29/21 13:50 Work Order: CE06418 Project: White Street LF-Phase I,II,III SW Sampled By:T. Martinez/J.Tejeda-Torre: 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 lE10018 EPA 8260D 05/11/21 00:27 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 53 1 50.0 106 % 53-136 IE10018 EPA 6260D 05111121 00:27 RKY Dibromofluoromethane 52 1 50.0 104 % 67-129 IE10018 EPA 6260D 05111121 00:27 RKY Toluene-d8 53 1 50.0 107 % 59-134 IE10018 EPA 6260D 05111121 00:27 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 lE04036 EPA 6020B 05/11/21 15:15 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lEO5016 EPA 6010D 05/06/21 13:52 JDH Barium [7440-39-3]^ 42.5 ug/L 1 1.10 10.0 lE05016 EPA 6010D 05/06/21 13:52 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lEO5016 EPA 6010D 05/06/21 13:52 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lEO5016 EPA 6010D 05/06/21 13:52 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 lEO5016 EPA 6010D 05/06/21 13:52 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 lEO5016 EPA 6010D 05/06/21 13:52 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lEO5016 EPA 6010D 05/06/21 13:52 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lEO5016 EPA 6010D 05/06/21 13:52 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 lEO5016 EPA 6010D 05/06/21 13:52 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lEO5016 EPA 6010D 05/06/21 13:52 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lEO5016 EPA 6010D 05/06/21 13:52 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lE04036 EPA 6020B 05/11/21 15:15 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lEO5016 EPA 6010D 05/06/21 13:52 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 lEO5016 EPA 6010D 05/06/21 13:52 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 1.7 J ug/L 1 0.80 2.0 lE05020 EPA 8260D 05/05/21 14:13 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 100 % 75-125 lEO5020 EPA 8260D 05105121 14:13 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 30 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW4 Lab Sample ID:CE06418-03 Received: 04/30/21 13:50 Matrix: Surface Water Sampled:04/29/21 13:09 Work Order: CE06418 Project: White Street LF-Phase I,II,III SW Sampled By:T. Martinez/].Tejeda-Torre: 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 IE10018 EPA 8260D 05/11/21 00:55 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY 1,1-Dichloroethane [75-34-3]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY 1,1-Dichloroethene [75-35-4]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY 1,2,3-Trichloropropane [96-18-4]A 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 u ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY 1,2-Dibromoethane [106-93-4]A 0.66 u ug/L 1 0.66 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY 1,2-Dichlorobenzene [95-50-1]A 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY 1,2-Dichloroethane [507-06-2]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY 1,2-Dichloropropane [78-87-5]A 0.10 u ug/L 1 0.10 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY 1,4-Dichlorobenzene [106-46-7]A 0.19 u ug/L 1 0.19 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 IE10018 EPA 8260D 05/11/21 00:55 RKY QL-02, QV-01 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE10018 EPA 8260D 05/11/21 00:55 RKY 4-Methyl-2-pentanone [108-10-1]A 1.1 U ug/L 1 1.1 5.0 IE10018 EPA 8260D 05/11/21 00:55 RKY QV-01 Acetone[67-64-1]A 10 U ug/L 1 10 20 IE10018 EPA 8260D 05/11/21 00:55 RKY Acrylonitrile [107-13-1]A 3.5 U ug/L 1 3.5 10 1E10018 EPA 8260D 05/11/21 00:55 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Bromodichloromethane [75-27-4]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Bromoform [75-25-2]A 0.22 U ug/L 1 0.22 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY QV-01 Chloroform [67-66-3]A 0.18 u ug/L 1 0.18 1.0 1E10018 EPA 8260D 05/11/21 00:55 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY cis-1,2-Dichloroethene [156-59-2]A 0.15 u ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Ethylbenzene[500-41-4]A 0.13 u ug/L 1 0.13 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Iodomethane [74-88-4]A 1.7 U ug/L 1 1.7 5.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Toluene [108-88-3]A 0.14 u ug/L 1 0.14 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY trans-1,2-Dichloroethene [156-60-5]A 0.21 u ug/L 1 0.21 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY trans-1,3-Dichloropropene [10061-02-6]A 0.15 U ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Trichloroethene [79-01-6]A 0.15 U ug/L 1 0.15 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Trichlorofluoromethane [75-69-4]A 0.24 U ug/L 1 0.24 1.0 IE10018 EPA 8260D 05/11/21 00:55 RKY Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 IE10018 EPA 8260D 05/11/21 00:55 RKY QV-01 Vinyl chloride [75-01-4]A 0.32 u ug/L 1 0.32 1.0 1E10018 EPA 8260D 05/11/21 00:55 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 30 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW4 Lab Sample ID:CE06418-03 Received: 04/30/21 13:50 Matrix: Surface Water Sampled:04/29/21 13:09 Work Order: CE06418 Project: White Street LF-Phase I,II,III SW Sampled By:T. Martinez/J.Tejeda-Torre: 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 lE10018 EPA 8260D 05/11/21 00:55 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 51 1 50.0 102 % 53-136 IE10018 EPA 6260D 05111121 00:55 RKY Dibromofluoromethane 52 1 50.0 103 % 67-129 IE10018 EPA 6260D 05111121 00:55 RKY Toluene-d8 52 1 50.0 105 % 59-134 IE10018 EPA 6260D 05111121 00:55 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 lEO5031 EPA 6020B 05/11/21 18:15 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 lEO5016 EPA 6010D 05/06/21 13:55 JDH Barium [7440-39-3]^ 45.0 ug/L 1 1.10 10.0 lE05016 EPA 6010D 05/06/21 13:55 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 lEO5016 EPA 6010D 05/06/21 13:55 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 lEO5016 EPA 6010D 05/06/21 13:55 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 lEO5016 EPA 6010D 05/06/21 13:55 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 lEO5016 EPA 6010D 05/06/21 13:55 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 lEO5016 EPA 6010D 05/06/21 13:55 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 lEO5016 EPA 6010D 05/06/21 13:55 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 lEO5016 EPA 6010D 05/06/21 13:55 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 lEO5016 EPA 6010D 05/06/21 13:55 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 lEO5016 EPA 6010D 05/06/21 13:55 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 lEO5031 EPA 6020B 05/11/21 18:15 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 lEO5016 EPA 6010D 05/06/21 13:55 JDH Zinc [7440-66-6]^ 5.98 J ug/L 1 4.40 10.0 lE05016 EPA 6010D 05/06/21 13:55 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 1.0 J ug/L 1 0.80 2.0 lE05020 EPA 8260D 05/05/21 14:39 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.3 1 5.00 106 % 75-125 lEO5020 EPA 8260D 05105121 1429 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 30 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW3 Lab Sample ID:CE07003-01 Received: 05/11/21 11:00 Matrix: Surface Water Sampled:05/07/21 10:15 Work Order: CE07003 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez 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 IE17030 EPA 8260D 05/18/21 00:13 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY 1,1-Dichloroethane [75-34-3]A 0.13 u ug/L 1 0.13 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY QV-01 1,1-Dichloroethene [75-35-4]A 0.21 u ug/L 1 0.21 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY 1,2,3-Trichloropropane [96-18-4]A 0.23 u ug/L 1 0.23 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 u ug/L 1 0.48 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY 1,2-Dibromoethane [106-93-4]A 0.66 u ug/L 1 0.66 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY 1,2-Dichlorobenzene [95-50-1]A 0.19 u ug/L 1 0.19 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY 1,2-Dichloroethane [107-06-2]A 0.21 u ug/L 1 0.21 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY QV-01 1,2-Dichloropropane [78-87-5]A 0.10 u ug/L 1 0.10 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY 1,4-Dichlorobenzene [106-46-7]A 0.19 u ug/L 1 0.19 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 IE17030 EPA 8260D 05/18/21 00:13 RKY QL-02, QV-01 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 IE17030 EPA 8260D 05/18/21 00:13 RKY 4-Methyl-2-pentanone [108-10-1]A 1.1 U ug/L 1 1.1 5.0 IE17030 EPA 8260D 05/18/21 00:13 RKY QV-01 Acetone [67-64-1]A 10 U ug/L 1 10 20 IE17030 EPA 8260D 05/18/21 00:13 RKY Acrylonitrile [107-13-1]A 3.5 U ug/L 1 3.5 10 IE17030 EPA 8260D 05/18/21 00:13 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Bromodichloromethane [75-27-4]A 0.17 u ug/L 1 0.17 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Bromoform [75-25-2]A 0.22 U ug/L 1 0.22 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY QV-01 Chloroform [67-66-3]A 0.18 u ug/L 1 0.18 1.0 1E17030 EPA 8260D 05/18/21 00:13 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY cis-1,2-Dichloroethene [156-59-2]A 0.15 u ug/L 1 0.15 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY QV-01 Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Iodomethane [74-88-4]A 1.7 U ug/L 1 1.7 5.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Styrene [100-42-5]A 0.11 u ug/L 1 0.11 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Toluene [108-88-3]A 0.14 u ug/L 1 0.14 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY trans-1,2-Dichloroethene [156-60-5]A 0.21 u ug/L 1 0.21 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY trans-1,3-Dichloropropene [10061-02-6]A 0.15 U ug/L 1 0.15 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY QV-01 Trichloroethene [79-01-6]A 0.15 U ug/L 1 0.15 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Trichlorofluoromethane [75-69-4]A 0.24 U ug/L 1 0.24 1.0 IE17030 EPA 8260D 05/18/21 00:13 RKY Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 IE17030 EPA 8260D 05/18/21 00:13 RKY QV-01 Vinyl chloride [75-01-4]A 0.32 u ug/L 1 0.32 1.0 IE17030 EPA 8260D 05/18/21 00:13 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 30 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW3 Lab Sample ID:CE07003-01 Received: 05/11/21 11:00 Matrix: Surface Water Sampled:05/07/21 10:15 Work Order: CE07003 Project: White Street LF-Phase I,II,III SW 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 1E17030 EPA 8260D 05/18/21 00:13 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 51 1 50.0 103 % 53-136 IE17030 EPA 6260D 05116121 00:13 RKY Dibromofluoromethane 59 1 50.0 117 % 67-129 IE17030 EPA 6260D 05116121 00:13 RKY Toluene-d8 55 1 50.0 109 % 59-134 IE17030 EPA 6260D 05118121 00:13 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 1E12021 EPA 6020B 05/19/21 14:21 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 1E11012 EPA 6010D 05/12/21 14:32 JDH Barium [7440-39-3]^ 41.6 ug/L 1 1.10 10.0 1E11012 EPA 6010D 05/12/21 14:32 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 1E11012 EPA 6010D 05/12/21 14:32 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 1E11012 EPA 6010D 05/12/21 14:32 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 1E11012 EPA 6010D 05/12/21 14:32 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 1E11012 EPA 6010D 05/12/21 14:32 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 1E11012 EPA 6010D 05/12/21 14:32 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 1E11012 EPA 6010D 05/12/21 14:32 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 1E11012 EPA 6010D 05/12/21 14:32 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 1E11012 EPA 6010D 05/12/21 14:32 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 1E11012 EPA 6010D 05/12/21 14:32 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 1E12021 EPA 6020B 05/19/21 14:21 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 1E11012 EPA 6010D 05/12/21 14:32 JDH Zinc[7440-66-6]^ 4.48 J ug/L 1 4.40 10.0 1E11012 EPA 6010D 05/12/21 14:32 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 1E14015 EPA 8260D 05/14/21 18:26 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 100 % 75-125 1E14015 EPA 8260D 05114121 18:26 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 30 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE10018 - EPA 50308 MS Blank (3E30018-BLK1) Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 16:28 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 54 u91L 50.0 107 53-136 Dibromofluoromethane 50 u91L 50.0 99 67-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 13 of 30 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE10018 - EPA 5030E MS - Continued Blank (SE30018-BLK1) Continued Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 16:28 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 53 u91L 50.0 106 59-134 LCS (1E10018-BS1) Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 14:36 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 108 75-133 Benzene 23 1.0 ug/L 20.0 114 80-134 Chlorobenzene 21 1.0 ug/L 20.0 103 80-120 Toluene 21 1.0 ug/L 20.0 104 71-120 Trichloroethene 22 1.0 ug/L 20.0 110 74-120 Matrix Spike (1E10018-MS1) Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 15:04 Source: CE06773-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 24 1.0 ug/L 20.0 0.21 U 122 75-133 Benzene 25 1.0 ug/L 20.0 0.15 U 126 80-134 Chlorobenzene 23 1.0 ug/L 20.0 0.17 U 116 80-120 Toluene 23 1.0 ug/L 20.0 0.14 U 116 71-120 Trichloroethene 24 1.0 ug/L 20.0 0.15 U 119 74-120 Matrix Spike Dup (3E10018-MSD1) Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 15:32 Source: CE06773-07 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 99 75-133 20 20 Benzene 21 1.0 ug/L 20.0 0.15 U 104 80-134 19 17 QM-11 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 98 80-120 17 16 QM-11 Toluene 20 1.0 ug/L 20.0 0.14 U 98 71-120 17 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 103 74-120 15 22 Batch 1E17030 - EPA 50308 MS Blank (1E17030-BLK3) Prepared: 05/17/2021 14:11 Analyzed: 05/17/2021 16:44 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 14 Of 30 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE17030 - EPA 5030E MS - Continued Blank (SE37030-BLK3) Continued Prepared: 05/17/2021 14:11 Analyzed: 05/17/2021 16:44 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 54 u91L 50.0 107 53-136 Dibromofluoromethane 56 u91L 50.0 113 67-129 Toluene-d8 56 u91L 50.0 112 59-134 LCS (1E17030-BS1) Prepared: 05/17/2021 14:11 Analyzed: 05/17/2021 14:52 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 108 75-133 Benzene 23 1.0 ug/L 20.0 113 80-134 Chlorobenzene 20 1.0 ug/L 20.0 98 80-120 Toluene 19 1.0 ug/L 20.0 95 71-120 Trichloroethene 22 1.0 ug/L 20.0 112 74-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 15 Of 30 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IE17030 - EPA 5030E MS - Continued (� �Eo www.encolabs.com Matrix Spike (1E17030-MS3) Prepared: 05/17/2021 14:11 Analyzed: 05/17/2021 15:20 Source: CE07225-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 23 1.0 ug/L 20.0 0.21 U 114 75-133 Benzene 22 1.0 ug/L 20.0 0.15 U 112 80-134 Chlorobenzene 21 1.0 ug/L 20.0 0.17 U 103 80-120 Toluene 20 1.0 ug/L 20.0 0.14 U 99 71-120 Trichloroethene 23 1.0 ug/L 20.0 0.15 U 115 74-120 Matrix Spike Dup (3E17030-MSD1) Prepared: 05/17/2021 14:11 Analyzed: 05/17/2021 15:48 Source: CE07225-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 0.21 U 112 75-133 2 20 Benzene 22 1.0 ug/L 20.0 0.15 U 112 80-134 0.04 17 Chlorobenzene 21 1.0 ug/L 20.0 0.17 U 106 80-120 3 16 Toluene 21 1.0 ug/L 20.0 0.14 U 105 71-120 6 17 Trichloroethene 22 1.0 ug/L 20.0 0.15 U 112 74-120 2 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE04034 - EPA 3005A Blank (3E04034-BLK1) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:01 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 (1E04034-BSI) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:07 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits Arsenic 210 10.0 ug/L 200 105 80-120 Barium 217 10.0 ug/L 200 109 80-120 Beryllium 20.5 1.00 ug/L 20.0 103 80-120 Cadmium 21.5 1.00 ug/L 20.0 108 80-120 Chromium 206 10.0 ug/L 200 103 80-120 Cobalt 211 10.0 ug/L 200 106 80-120 Copper 205 10.0 ug/L 200 102 80-120 Lead 210 10.0 ug/L 200 105 80-120 Nickel 218 10.0 ug/L 200 109 80-120 Selenium 213 10.0 ug/L 200 107 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 16 of 30 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE04034 - EPA 3005A - Continued LCS (lE04034-BSI) Continued Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Silver 209 10.0 ug/L 200 105 80-120 Vanadium 201 10.0 ug/L 200 101 80-120 Zinc 218 10.0 ug/L 200 109 80-120 Matrix Spike (1E04034-MS3) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:09 Source: CE03255-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 160 10.0 ug/L 200 7.60 U 80 75-125 Barium 398 10.0 ug/L 200 192 103 75-125 Beryllium 20.0 1.00 ug/L 20.0 0.160 U 100 75-125 Cadmium 15.9 1.00 ug/L 20.0 0.360 U 79 75-125 Chromium 197 10.0 ug/L 200 1.40 U 99 75-125 Cobalt 199 10.0 ug/L 200 6.54 96 75-125 Copper 162 10.0 ug/L 200 1.60 U 81 75-125 Lead 193 10.0 ug/L 200 3.10 U 96 75-125 Nickel 317 10.0 ug/L 200 122 97 75-125 Selenium 157 10.0 ug/L 200 6.20 U 79 75-125 Silver 210 10.0 ug/L 200 1.90 U 105 75-125 Vanadium 185 10.0 ug/L 200 1.40 U 92 75-125 Zinc 199 10.0 ug/L 200 4.40 U 99 75-125 Matrix Spike Dup (lE04034-MSD1) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:22 Source: CE03255-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 176 10.0 ug/L 200 7.60 U 88 75-125 10 20 Barium 418 10.0 ug/L 200 192 113 75-125 5 20 Beryllium 21.2 1.00 ug/L 20.0 0.160 U 106 75-125 6 20 Cadmium 16.8 1.00 ug/L 20.0 0.360 U 84 75-125 6 20 Chromium 209 10.0 ug/L 200 1.40 U 105 75-125 6 20 Cobalt 211 10.0 ug/L 200 6.54 102 75-125 6 20 Copper 174 10.0 ug/L 200 1.60 U 87 75-125 7 20 Lead 204 10.0 ug/L 200 3.10 U 102 75-125 6 20 Nickel 335 10.0 ug/L 200 122 106 75-125 5 20 Selenium 169 10.0 ug/L 200 6.20 U 84 75-125 7 20 Silver 223 10.0 ug/L 200 1.90 U 111 75-125 6 20 Vanadium 197 10.0 ug/L 200 1.40 U 99 75-125 6 20 Zinc 212 10.0 ug/L 200 4.40 U 106 75-125 6 20 Post Spike (lE04034-PSI) Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:24 Source: CE03255-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.176 0.0100 mg/L 0.200 -0.0401 88 80-120 Barium 0.426 0.0100 mg/L 0.200 0.192 117 80-120 Beryllium 0.0215 0.00100 mg/L 0.0200 -0.000101 108 80-120 Cadmium 0.0173 0.00100 mg/L 0.0200 -0.00408 87 80-120 Chromium 0.213 0.0100 mg/L 0.200 0.000867 106 80-120 Cobalt 0.216 0.0100 mg/L 0.200 0.00654 105 80-120 Copper 0.179 0.0100 mg/L 0.200 -0.0447 90 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 17 of 30 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE04034 - EPA 3005A - Continued Post Spike (SE04034-PS1) Continued Prepared: 05/04/2021 13:33 Analyzed: 05/05/2021 13:24 Source: CE03255-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Lead 0.208 0.0100 mg/L 0.200 -0.00388 104 80-120 Nickel 0.342 0.0100 mg/L 0.200 0.122 110 80-120 Selenium 0.181 0.0100 mg/L 0.200 -0.0509 91 80-120 Silver 0.226 0.0100 mg/L 0.200 0.00179 112 80-120 Vanadium 0.200 0.0100 mg/L 0.200 -0.0127 100 80-120 Zinc 0.216 0.0100 mg/L 0.200 0.00100 108 80-120 Batch IE04036 - EPA 3005A Blank (lE04036-BLKI) Prepared: 05/04/2021 13:44 Analyzed: 05/10/2021 18:11 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (lE04036-BSI) Prepared: 05/04/2021 13:44 Analyzed: 05/10/2021 18:16 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 20.1 1.00 ug/L 20.0 100 80-120 Selenium 19.3 1.00 ug/L 20.0 97 80-120 Thallium 20.7 1.00 ug/L 20.0 104 80-120 Matrix Spike (1E04036-MS3) Prepared: 05/04/2021 13:44 Analyzed: 05/10/2021 18:20 Source: CE03257-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.6 2.00 ug/L 40.0 0.740 U 107 75-125 Selenium 42.4 2.00 ug/L 40.0 1.82 U 106 75-125 Thallium 41.0 2.00 ug/L 40.0 0.220 U 103 75-125 Matrix Spike Dup (3E04036-MSD1) Prepared: 05/04/2021 13:44 Analyzed: 05/10/2021 18:24 Source: CE03257-04 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 105 75-125 1 20 Selenium 38.9 2.00 ug/L 40.0 1.82 U 97 75-125 9 20 Thallium 41.1 2.00 ug/L 40.0 0.220 U 103 75-125 0.04 20 Post Spike (SE04036-PS1) Prepared: 05/04/2021 13:44 Analyzed: 05/10/2021 18:29 Source: CE03257-04 Analvte Antimony Selenium Thallium Batch IE05016 - EPA 3005A Spike Result Flaq POL Units Level 24.0 1.00 ug/L 20.0 22.2 1.00 ug/L 20.0 23.2 1.00 ug/L 20.0 Source %REC Result %REC Limits RPD 0.0517 120 75-125 -0.222 111 75-125 0.00518 116 75-125 RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 18 Of 3O (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE05016 - EPA 3005A - Continued Blank (3E05016-BLK1) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:13 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L Blank (1E05016-BLK2) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:18 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L LCS (1E05016-BS1) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:58 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 214 10.0 ug/L 200 107 80-120 Barium 223 10.0 ug/L 200 112 80-120 Beryllium 21.0 1.00 ug/L 20.0 105 80-120 Cadmium 21.3 1.00 ug/L 20.0 106 80-120 Chromium 215 10.0 ug/L 200 108 80-120 Cobalt 217 10.0 ug/L 200 109 80-120 Copper 212 10.0 ug/L 200 106 80-120 Lead 218 10.0 ug/L 200 109 80-120 Nickel 222 10.0 ug/L 200 111 80-120 Selenium 211 10.0 ug/L 200 105 80-120 Silver 211 10.0 ug/L 200 106 80-120 Vanadium 210 10.0 ug/L 200 105 80-120 Zinc 220 10.0 ug/L 200 110 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 19 of 30 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE05016 - EPA 3005A - Continued Matrix Spike (1E05016-MS3) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:25 Source: CE03253-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 162 10.0 ug/L 200 7.60 U 81 75-125 Barium 260 10.0 ug/L 200 88.6 86 75-125 Beryllium 16.9 1.00 ug/L 20.0 0.160 U 84 75-125 Cadmium 16.8 1.00 ug/L 20.0 0.360 U 84 75-125 Chromium 166 10.0 ug/L 200 1.40 U 83 75-125 Cobalt 167 10.0 ug/L 200 1.40 U 84 75-125 Copper 162 10.0 ug/L 200 1.60 U 81 75-125 Lead 168 10.0 ug/L 200 3.10 U 84 75-125 Nickel 171 10.0 ug/L 200 2.20 U 85 75-125 Selenium 178 10.0 ug/L 200 6.20 U 89 75-125 Silver 167 10.0 ug/L 200 1.90 U 83 75-125 Vanadium 168 10.0 ug/L 200 3.57 82 75-125 Zinc 175 10.0 ug/L 200 4.40 U 88 75-125 Matrix Spike (1E05016-MS2) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:37 Source: CE03253-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 170 10.0 ug/L 200 7.60 U 85 75-125 Barium 218 10.0 ug/L 200 41.8 88 75-125 Beryllium 17.0 1.00 ug/L 20.0 0.160 U 85 75-125 Cadmium 16.9 1.00 ug/L 20.0 0.360 U 85 75-125 Chromium 169 10.0 ug/L 200 1.40 U 85 75-125 Cobalt 171 10.0 ug/L 200 1.40 U 85 75-125 Copper 165 10.0 ug/L 200 1.60 U 83 75-125 Lead 170 10.0 ug/L 200 3.10 U 85 75-125 Nickel 175 10.0 ug/L 200 2.20 U 88 75-125 Selenium 181 10.0 ug/L 200 6.20 U 91 75-125 Silver 168 10.0 ug/L 200 1.90 U 84 75-125 Vanadium 168 10.0 ug/L 200 1.40 U 84 75-125 Zinc 181 10.0 ug/L 200 6.52 87 75-125 Matrix Spike Dup (3E05016-MSD1) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:27 Source: CE03253-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 165 10.0 ug/L 200 7.60 U 83 75-125 2 20 Barium 257 10.0 ug/L 200 88.6 84 75-125 1 20 Beryllium 16.7 1.00 ug/L 20.0 0.160 U 84 75-125 0.9 20 Cadmium 16.5 1.00 ug/L 20.0 0.360 U 83 75-125 2 20 Chromium 165 10.0 ug/L 200 1.40 U 82 75-125 0.9 20 Cobalt 165 10.0 ug/L 200 1.40 U 83 75-125 1 20 Copper 161 10.0 ug/L 200 1.60 U 81 75-125 0.6 20 Lead 165 10.0 ug/L 200 3.10 U 82 75-125 2 20 Nickel 168 10.0 ug/L 200 2.20 U 84 75-125 1 20 Selenium 172 10.0 ug/L 200 6.20 U 86 75-125 3 20 Silver 166 10.0 ug/L 200 1.90 U 83 75-125 0.7 20 Vanadium 167 10.0 ug/L 200 3.57 82 75-125 0.7 20 Zinc 173 10.0 ug/L 200 4.40 U 86 75-125 2 20 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 20 of 30 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE05016 - EPA 3005A - Continued Post Spike (SE05016-PS1) Prepared: 05/05/2021 09:54 Analyzed: 05/06/2021 11:30 Source: CE03253-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.163 0.0100 mg/L 0.200 -0.00375 81 80-120 Barium 0.261 0.0100 mg/L 0.200 0.0886 86 80-120 Beryllium 0.0171 0.00100 mg/L 0.0200 3.62E-5 85 80-120 Cadmium 0.0170 0.00100 mg/L 0.0200 0.000221 84 80-120 Chromium 0.168 0.0100 mg/L 0.200 0.000337 84 80-120 Cobalt 0.170 0.0100 mg/L 0.200 0.000669 85 80-120 Copper 0.163 0.0100 mg/L 0.200 -0.00331 82 80-120 Lead 0.170 0.0100 mg/L 0.200 0.00276 84 80-120 Nickel 0.173 0.0100 mg/L 0.200 0.000532 86 80-120 Selenium 0.181 0.0100 mg/L 0.200 0.00242 89 80-120 Silver 0.164 0.0100 mg/L 0.200 -0.000827 82 80-120 Vanadium 0.170 0.0100 mg/L 0.200 0.00357 83 80-120 Zinc 0.178 0.0100 mg/L 0.200 0.00248 88 80-120 Batch lEO5031 - EPA 3005A Blank (1E05031-BLK3) Prepared: 05/05/2021 14:08 Analyzed: 05/11/2021 16:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (1E05031-BS1) Prepared: 05/05/2021 14:08 Analyzed: 05/11/2021 16:16 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 Selenium 21.6 1.00 ug/L 20.0 108 80-120 Thallium 20.9 1.00 ug/L 20.0 105 80-120 Matrix Spike (1E05031-MS3) Prepared: 05/05/2021 14:08 Analyzed: 05/11/2021 16:20 Source: CE05398-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 41.3 2.00 ug/L 40.0 0.740 U 103 75-125 Selenium 40.5 2.00 ug/L 40.0 1.82 U 101 75-125 Thallium 41.7 2.00 ug/L 40.0 0.220 U 104 75-125 Matrix Spike Dup (3E05031-MSD1) Prepared: 05/05/2021 14:08 Analyzed: 05/11/2021 16:25 Source: CE05398-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 41.2 2.00 ug/L 40.0 0.740 U 103 75-125 0.2 20 Selenium 41.1 2.00 ug/L 40.0 1.82 U 103 75-125 2 20 Thallium 41.6 2.00 ug/L 40.0 0.220 U 104 75-125 0.2 20 Post Spike (1E05031-PS3) Prepared: 05/05/2021 14:08 Analyzed: 05/11/2021 16:29 Source: CE05398-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 23.4 1.00 ug/L 20.0 0.0152 117 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 21 Of 30 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE05031 - EPA 3005A - Continued Post Spike (SE05031-PS3) Continued Prepared: 05/05/2021 14:08 Analyzed: 05/11/2021 16:29 Source: CE05398-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Selenium 21.5 1.00 ug/L 20.0 -0.301 107 75-125 Thallium 23.8 1.00 ug/L 20.0 0.0198 119 75-125 Batch IEII012 - EPA 3005A Blank (3E31012-BLK3) Prepared: 05/11/2021 11:21 Analyzed: 05/12/2021 13:09 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 (1E11012-BSI) Prepared: 05/11/2021 11:21 Analyzed: 05/12/2021 13:18 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 173 10.0 ug/L 200 86 80-120 Barium 178 10.0 ug/L 200 89 80-120 Beryllium 16.9 1.00 ug/L 20.0 85 80-120 Cadmium 17.4 1.00 ug/L 20.0 87 80-120 Chromium 171 10.0 ug/L 200 85 80-120 Cobalt 174 10.0 ug/L 200 87 80-120 Copper 166 10.0 ug/L 200 83 80-120 Lead 175 10.0 ug/L 200 87 80-120 Nickel 178 10.0 ug/L 200 89 80-120 Selenium 179 10.0 ug/L 200 90 80-120 Silver 173 10.0 ug/L 200 87 80-120 Vanadium 166 10.0 ug/L 200 83 80-120 Zinc 177 10.0 ug/L 200 89 80-120 Matrix Spike (3E13012-MS1) Prepared: 05/11/2021 11:21 Analyzed: 05/12/2021 13:38 Source: CE05157-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 187 10.0 ug/L 200 7.60 U 94 75-125 Barium 196 10.0 ug/L 200 1.28 97 75-125 Beryllium 18.9 1.00 ug/L 20.0 0.321 93 75-125 Cadmium 18.7 1.00 ug/L 20.0 0.360 U 94 75-125 Chromium 186 10.0 ug/L 200 1.40 U 93 75-125 Cobalt 203 10.0 ug/L 200 11.6 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 22 Of 30 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE11012 - EPA 3005A - Continued Matrix Spike (1E13012-MS3) Continued Prepared: 05/11/2021 11:21 Analyzed: 05/12/2021 13:38 Source: CE05157-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Copper 181 10.0 ug/L 200 1.60 U 91 75-125 Lead 191 10.0 ug/L 200 3.10 U 96 75-125 Nickel 196 10.0 ug/L 200 2.29 97 75-125 Selenium 195 10.0 ug/L 200 6.20 U 98 75-125 Silver 188 10.0 ug/L 200 1.90 U 94 75-125 Vanadium 181 10.0 ug/L 200 1.40 U 90 75-125 Zinc 202 10.0 ug/L 200 6.48 98 75-125 Matrix Spike Dup (1E11012-MSD1) Prepared: 05/11/2021 11:21 Analyzed: 05/12/2021 13:41 Source: CE05157-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 188 10.0 ug/L 200 7.60 U 94 75-125 0.7 20 Barium 197 10.0 ug/L 200 1.28 98 75-125 0.7 20 Beryllium 19.1 1.00 ug/L 20.0 0.321 94 75-125 1 20 Cadmium 18.9 1.00 ug/L 20.0 0.360 U 94 75-125 0.9 20 Chromium 188 10.0 ug/L 200 1.40 U 94 75-125 0.9 20 Cobalt 205 10.0 ug/L 200 11.6 97 75-125 0.9 20 Copper 183 10.0 ug/L 200 1.60 U 92 75-125 1 20 Lead 192 10.0 ug/L 200 3.10 U 96 75-125 0.7 20 Nickel 198 10.0 ug/L 200 2.29 98 75-125 1 20 Selenium 194 10.0 ug/L 200 6.20 U 97 75-125 0.7 20 Silver 189 10.0 ug/L 200 1.90 U 95 75-125 0.8 20 Vanadium 184 10.0 ug/L 200 1.40 U 92 75-125 2 20 Zinc 203 10.0 ug/L 200 6.48 98 75-125 0.6 20 Post Spike (1EI1012-PSI) Prepared: 05/11/2021 11:21 Analyzed: 05/12/2021 13:43 Source: CE05157-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.190 0.0100 mg/L 0.200 -0.000263 95 80-120 Barium 0.200 0.0100 mg/L 0.200 0.00128 99 80-120 Beryllium 0.0194 0.00100 mg/L 0.0200 0.000321 95 80-120 Cadmium 0.0192 0.00100 mg/L 0.0200 0.000354 94 80-120 Chromium 0.192 0.0100 mg/L 0.200 0.000344 96 80-120 Cobalt 0.207 0.0100 mg/L 0.200 0.0116 98 80-120 Copper 0.187 0.0100 mg/L 0.200 -0.000449 93 80-120 Lead 0.196 0.0100 mg/L 0.200 -0.000276 98 80-120 Nickel 0.200 0.0100 mg/L 0.200 0.00229 99 80-120 Selenium 0.196 0.0100 mg/L 0.200 0.000236 98 80-120 Silver 0.192 0.0100 mg/L 0.200 -0.00109 96 80-120 Vanadium 0.186 0.0100 mg/L 0.200 0.000170 93 80-120 Zinc 0.210 0.0100 mg/L 0.200 0.00648 102 80-120 Batch IE12021 - EPA 3005A Blank (3E32021-BLK1) Prepared: 05/12/2021 15:21 Analyzed: 05/19/2021 12:14 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 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 23 of 30 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IE12021 - EPA 3005A - Continued Blank (SE32021-BLK1) Continued Prepared: 05/12/2021 15:21 Analyzed: 05/19/2021 12:14 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (1E12021-BS1) Prepared: 05/12/2021 15:21 Analyzed: 05/19/2021 12:19 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 Selenium 21.3 1.00 ug/L 20.0 107 80-120 Thallium 21.0 1.00 ug/L 20.0 105 80-120 Matrix Spike (3E12021-MS3) Prepared: 05/12/2021 15:21 Analyzed: 05/19/2021 12:23 Source: CE05157-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.3 2.00 ug/L 40.0 0.740 U 106 75-125 Selenium 41.4 2.00 ug/L 40.0 1.82 U 103 75-125 Thallium 41.7 2.00 ug/L 40.0 0.220 U 104 75-125 Matrix Spike Dup (3E12021-MSD3) Prepared: 05/12/2021 15:21 Analyzed: 05/19/2021 12:27 Source: CE05157-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.4 2.00 ug/L 40.0 0.740 U 106 75-125 0.4 20 Selenium 45.6 2.00 ug/L 40.0 1.82 U 114 75-125 10 20 Thallium 41.9 2.00 ug/L 40.0 0.220 U 105 75-125 0.5 20 Post Spike (lE12021-PSI) Prepared: 05/12/2021 15:21 Analyzed: 05/19/2021 12:31 Source: CE05157-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 24.1 1.00 ug/L 20.0 -0.104 121 75-125 Selenium 24.4 1.00 ug/L 20.0 -0.253 122 75-125 Thallium 24.3 1.00 ug/L 20.0 0.00215 121 75-125 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch lEO5020 - EPA 50308 MS Blank (1E05020-BLK3) Prepared: 05/05/2021 00:00 Analyzed: 05/05/2021 09:54 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 5.0 ug/L 5.00 100 75-125 LCS (1E05020-BSI) Prepared: 05/05/2021 00:00 Analyzed: 05/05/2021 09:28 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 97 80-133 Toluene-d8 5.0 ug/L 5.00 100 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 24 Of 30 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch IE05020 - EPA 5030E MS - Continued Matrix Spike (1E05020-MS3) Prepared: 05/05/2021 00:00 Analyzed: 05/05/2021 18:02 Source: AE03651-01 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 96 80-133 Toluene-d8 5.1 u91L 5.00 101 75-125 Matrix Spike Dup (3E05020-MSD1) Prepared: 05/05/2021 00:00 Analyzed: 05/05/2021 18:27 Source: AE03651-01 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 2 19 Toluene-d8 5.0 u91L 5.00 101 75-125 Batch IE14015 - EPA 5030E MS Blank (3E34015-BLK3) Prepared: 05/14/2021 00:00 Analyzed: 05/14/2021 10:49 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 4.9 u91L 5.00 99 75-125 LCS (3E14015-BS1) Prepared: 05/14/2021 00:00 Analyzed: 05/14/2021 09:49 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 101 80-133 Toluene-d8 4.9 u91L 5.00 97 75-125 Matrix Spike (3E14015-MS1) Prepared: 05/14/2021 00:00 Analyzed: 05/14/2021 19:42 Source: AE04063-03 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 0.93 92 80-133 Toluene-d8 4.9 u91L 5.00 99 75-125 Matrix Spike Dup (3E14015-MSD1) Prepared: 05/14/2021 00:00 Analyzed: 05/14/2021 20:07 Source: AE04063-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 0.93 95 80-133 2 19 Toluene-d8 5.0 u91L 5.00 101 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 25 Of 3O (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QL-02 The associated laboratory control sample exhibited high bias; since the result is ND, there is no impact. QM-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 26 of 3O E a cc 0 U LIJ cc 0 0 , W U LL 0 Z a U ui cc 0 a 0 m Q J Z 0 a Q w Z 0 U J Z W a Z M0 Y.L 7 Z W ro ar ca E C CL N �� y m ro X Q V m m m I" Ci LU 67 a a • �! '2 � n � E v -( E t1A m • 1 , E ¢ z � ca m J d S � y d Q Eo C � U t9 m U m b n O E = Z� _ 73 ® ff d 6mVi 0 N Z U o N_ m° e p C = u m U E E E m F o& Q6`gd IN`n�`�S oJ`R� o8`*fl`�Y Bd X iC X ° Q Q Q 4x h 2 4 ai wis aaszs`pusaad aogzs x x x x x V _ � N p ot2 ig U � � 'b L_ o to a u q m c 0 E palc G YD Z ci{j U g o m 'Q ( j �--� E m c N � Cb O 1 E � m N ; i • di N co IL 0 L'7 v o + c ?SiIN Ro J- � CS � � m � � �•- r r r n `" o ry C? U') E a Page 27 of 30 - U 4 0 H U7 U7 fn - U Sample Preservation Verification ENCO Cary Work Order: CE06418 Project: White Street LF-Phase 1,11,111 SW Client: Golder Associates, Inc. (00007) Project#: 1668421.107 Logged In: 30-Apr-21 14:36 Logged By: Rachel Ann Y nish Preservation Check Performed By: Date/Time: A_J /L CE06418-01 Cont Type Pres (pH) Requirement pH Checked 11 In Control pH Adjusted Datemme Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y I N/ NA Y I N/ NA CE06418-02 Cont Type Pres (pH) pH Checked / Requirement In Control pH Adjusted Date[Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y I N/ NA Y/ N l NA C E06418-03 Cont Type Pres (pH) Requirement pH Checked / In Control pH Adjusted Datemme Adiusted Reagent UsedlComments A 250mLP+HNO3 <2 Y ' N / NA Y ! N % NA Reagent Name ID 1 2 \_/ Reacient Name ID 3 4 Rea ent Name ID 5 6 pH Strip ID: PH Strips COF0555 C:WmntlPn,1L,Wf\U_1 Page 28 of 30 , 0 O U W 0 N M U LL O Z Q U N cc O a cc O m z O a 7 W/� / Vi z O LU a H z W 2 z 0 cc z w Y �m yOe� a i J LL y o-E Q n If a U N i N � 5 � � �? E III44G ✓✓/777 E E E � N @ Y O E C6 m ai d c 7 N J a � C � U N � �/a p J\ V o C a o m INO U v `a ti X m ro � O w = E O m o`a m O Z c a q EO N 3 Z 0 S tR Q Z IL rs C m G w 04,0 a G ti Jk 0978 a V N p c� o v a E� E m N O O U O U C � y v O c v G 6 `�i •� 01 N A m v a P. E E c c) �- c A a G _ A2 a Q ¢ U � a IL a� a ¢ � E O � y N 0 1 m N W Z �1 U F r� Q N vi VVo ] L v+ ��.[ 4 tT r 4 m3 n m a Q V 1 d 'a sh E E m Page 29 of 30 5 4 U Sample Preservation Verification ENCO Cary 0 Work Order: CE07003 Client: Golder Associates, Inc. (GO007) Project: White Street LF-Phase 1,11,111 SW Project #: 1668421.107 Logged In: 11-May-21 11:57 Logged By: Rachel Ann Yoni Preservation Check Performed By: Date/Time:� CE07003-01 Cont Type Pres (pH) Requirement pH Checked / In Control pH Adjusted Date/Time Adiusted Reagent Used/Comments A 250mLP+HNO3 <2 Y! N/ NA Y W NA Rea ent Name ID 1 2 Rea ent Name ID 3 4 Rea ent Name ID 5 6 pH Strip ID; _ PH Strips COF0555 C:\elmnt\Print\wko—PreservationCheck.rpt Page 30 of 30 age I ot 1 WORK ORDER Printed: 5/3/2021 8:20:37AM CE06418 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: 19131339.103 PO #: Report To: Golder Associates, Inc. (G0007) Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 Phone: (336) 852-4903 Fax: (336) 852-4904 Invoice To: City of Greensboro (CI034) Richard Lovett 401 Patton Ave Greensboro, NC 27406 Phone :(336) 373-4188 Fax: Received By: David E. Wilder Date Received: 30-Apr-21 13:50 Logged In By: Rachel Ann Yonish Date Logged In: 30-Apr-21 14:36 Work Order Comments: C-2164 received at 1.7°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: White Street Landfill - Phase I, II, III SW Project Reference Number: 19131339.103 Sampling ,Event Date: April 28 &_May 7, 202.1.. Review Date: June 14, 2021 Report #: CE06418, CE03253 COLDER ti7EM6ER QF WSp Initials: TM Review: J0'f,.ty -L1 Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain -of -custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: Region III Modifications to Functional Guidelines for Organic Data Review Multi -Media, Multi -Concentration, September 1994; Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility/C & D List NC Appendix I NC Appendix I + Detects NC Appendix II NC Subtitle D Leachate List Other; 1.0 CHAIN OF CUSTODY (COC) REVIEW TM COC was properly signed by all parties. TM Correct project name and number are on the form. Incorrected project number on CDC. Should be 19131339.103 TM Sample receipt condition at laboratory was acceptable. TM Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES TM 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 2of3 COLDER MEMBER OF WSR Review Criteria Method Anal tes HoldingTime _ _ SW-846 Method 8260 and 8011 VOCs SVOCs, PCBs, pesticides and herbicides 14 days SW-846 Methods 8270, 6080, 8081, 8082, and 8151 7 days for extraction, 40 days from extraction for analysis _ SW-846 Methods 6000 and 7000 Series _ Metals except mercury 6 months (no temperature require ents SW-846 Method 7470mm� Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 C snide Nitrate/Sulfate 14 days 48 fours/28 days EPA Method 300 EPA Method 405.1 J BOD 48 hours 28 days EPA Method 410.4 _ COD EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW TM Laboratory analyzed at least one internal blank for each method, where applicable. TM Laboratory blank is interference -free. TM Surrogate recoveries are provided for each analytical method, where applicable. TM Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). TM MSIMSD/LCS data results are provided for each analytical method. TM MSIMSDILCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). (CE06418) The 8260D LCS exhibited a high bias for 2-Butanone; however, this analyte was not detected in the associated samples. The Continuing Calibration Verification (CCV) exhibited a high bias for 1,1-Dichloroethane, 2-Butanone, 4- Methyl.2-pentanone, Acrylonitrile, Bromomethane, Chloroethane, cis-1,3- ❑ichloropropene, trnas-9,4-Dichloro-2-butene, and Vinyl acetate; however, these analytes were not detected in the associated samples. The precision between duplicate spikes of Benzene and Chlorobenzene exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these analytes. (CE03253) The 82600 LCS exhibited a high bias for 2-13utanone; however, this analyte was not detected in the associated samples. The precision between duplicate spikes of 1,1-Dichloroethene exceeded acceptance criteria. The QC batch was approved based on acceptable LCS recovery of this analyte. 4.0 ANALYTE LISTS/METHODS TM The proper number of constituents are present for each analyte list as identified above (including detects where applicable). TM Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING GOLDER ASSOCIATES NC, INC. G O L b E R QUALITY ASSURANCE & QUALITY CONTROL MEMENE. ROFW5P LABORATORY DATA REVIEW Page 3 of 3 TM All analytical reporting associated with the event was performed by the contracted lab TM 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 net within 5X of the concentration in the blank (or 10X for commonly detected laboratory contaminants -acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. TM It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. Antimony and Thallium (2X) on all samples. TM The report provides the reporting limit for each constituent. TM 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. TM 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. TM 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). TM Other report issues/Communications with laboratory/etc.: APPENDIX C EPA Natural Attenuation Screening Protocol Forms and BIOCHLOR Monitored Natural Attenuation Analysis for April 2021 Sampling Event Natural Attenuation Interpretation Score Screening Inadequate evidence for anaerobic biodegradation" ofchloflnated organics 0to5 Limited evidence for anaerobio biodegradetion* of chlorinated organ— 6to14 Protocol SCOT@: 14 The (allowing Is to ken fmmthe USEPA pmmcol{USEPA, 1998). Adequate eVldenCe foranaerobic diedogradabor*of-chloininated organlce 15 to 20 The results of this szoring proms nave rvo regulatory Strong evidence for anaerobic biodegradation' ofchlorinated organics >20 signlecarme. Scroll to End ofTahle Concentration in ed nivededloho Points AnalySl$, Most Contam. Zone Interpretation Yes No Awarded Oxygen` <0.5 mg/L Tolerated, suppresses the reductive pathway at higher )_) 3 concentrations > 5mg/L Not tolerated; however, VC may be oxidized aerobically 0 Nitrate <1 mg/L At higher concentrations may compete with reductive 2 pathway Iron II' >1 mg1L Reductive pathway possible, VC maybe oxidized under 3 Fe(III)-reducing conditions Sulfate` <20 mglL At higher concentrations may compete with reductive 0 0 pathway Sulfide' >1 mglL Reductive pathway possible L7 0 Methane >0.5 mg/L Ultimate reductive daughter product, VC Accumulates V 0 Oxidation <50 millivolts (mV) Reductive pathway possible - 1 Reduction Potential' (ORP) <-100mV Reductive pathway likely - �, 0 PH' 5 < pH < 9 Optimal range for reductive pathway 0 TOC >20 mg1L Carbon and energy source; drives dechlorination; can be C - 2 natural or anthropogenic _ Temperature' >20°C At T>20°C biochemical process is accelerated 0 Carbon Dioxide >2x background Ultimate oxidative daughter product 0 Alkalinity >2x background Results from interaction of carbon dioxide with aquifer Q L 1 minerals Chloride' >2x background Daughter product of organic chlorine O 2 Hydrogen >1 nM Reductive pathway possible, VC may accumulate 1 CO 0 Volatile Fatty Acids >0.1mg1L Intermediates resulting from biodegradation ofaromatic GI 0 compounds; carbon and energy source - BTEX' >0.1 mg/L Carbon and energy source, drives dechlorination C 0 PCE' Material released O 0 TCE' Daughter product of PCE ai 0 DCE' Daughter product of TCE. If cis is greater than BO % of total DCE it is likely a daughter ;_ 0 product of TCE"; 1,1-DCE can be a them. reaction product of TCA VC' Daughter product of DCEai �) 0 1,1,1- Material released 4� O 0 Trichloroethane - DCA Daughter product of TCA under reducing conditions 0 Carbon Material released 0 Tetrachloride - Chloroethane Daughter product of DCA or VC under reducing conditions L 0 Ethene/Ethane >0.01mg1L Daughter productofVC/ethene 0 >0.1 mg/L Daughter productofVClethene _ 0 0 Chloroform Daughter product of Carbon Tetrachloride O ce 0 Dichlorcm ethane Daughter product of Chloroform O 0 * required analysis. a/ Points awarded only if it can be shown that the compound is a daughter product (i.e., not a constituent of the source NAPL). iifnsw. DATE: 06/16/2021 G I L D E R Project #: 19131339 Prepared By:TJM MEMBER dE WSP Reviewed By: DYR Title SCORE Reset II-1 MNA SCREENING Appendi April 2021 MNA Evaluation X White Street Landfill, Permit No. 41-03 C-1 Natural Attenuation Interpretation score Screening ndlleq VnI- _... I•-rl a IrF AriA, r:'. I• .-1—1:dd+1., -..I - nI-,Ilr+a ed •+h,phlca 0 to 5 Protocol Umilfd r�.1cnce For jnaarc,hh: t od-gradatfon•ar.:hiannatad orosrA; a 6 to 14 'Sco '4: i n E,I n •— Lhl �L{I•yk pvww i VYl HA. +: M5 f 4. quwt? ?'ndql lCe iCr al'IdUU0iU 04-31]eyI b01311 V of [ETIQ, lv� Ltd -]r gdrlir-i 15 to 20 rhr r.rulla of nls ;cwlnp procsn hn • n o req.lm rr any ..•nrs«nc. Inl 4f crFl nhlr k,lw Nrir,nddh nr - -1 -.I lNx rl l-ll•a nry4l ln::, 71-20 Scroll t0 E11tl of Table, '*e d� v oe mi-n—r� Concentration In Points Analysis Most Contam. Zone Interpretatlon N es No Awarded Oxygen' <0.5 mg/L Tolerated, suppresses the reductive pathway at higher •l ❑ concentrations > 5mgIL Not tolerated; however, VC may be oxidl2aI aerobically 0 Nitrate �1 mg1L At higher concentrations may compete with reductive 'So1 _ pathway Iron II' >1 mglL Reductive pathway possible; VC may he oxldized under • 0 Fe(fll)-reduciriq conditions Sulfate' c20 mglL At higher Concentrations may compete with reductive t • 0 pathway Sulfide' >1 mg1L Reductive pathway possible 0 Methane >0.5 mg/L Ultimate reductive daughter product, VC Accumulates � 0 Oxidation e50 millivolts (mV) Reductive pathway possible 0 Reduction PoterThal' (ORP) r-100mV Reductive pathway Iflreiy {j {i} 0 PH' 5 4 pH < 8 Optimal range for reductive pathway O ri 0 TOC 3213 mglL Carbon and energy source; drives dechlorinatlen; can be 0 natural or srithfopoqeniG Temperature` >21J'C At T>20' C biochemical process is accelerated L} 0 Carbon Dimdde n2x background UkimOtte oxidative daughter product 0 0 Alkalinity >2x background Results from interaction of carbon dioxide with aquifer 1 1 minerals Chlor de' >2x background Daughter product of organic chlorine 0 2 Hydrogen >1 nM Reductive pathvmy possible, VC may accumulate ❑ 0 Volatile Fatty Acids >0.1 mg1L Intermediates re?ulting From biodegradation of aromatic 0 Ci7 0 cam pounds; carbon and era source HTE7C' >0.7 mglL Carbon arid energy source. drives dechlonnatloh - L� 0 PCE` Material released 0 TCE' Daughter product of PCE ' 0 DCE` Daughter product of TCE. If cis is greater than 801% of total DCE it is likely a daughter r! ❑ product of TCE"; 1. 1-DCE can he a chem. reaction product of TCA Vol Daughter product of DCE" 0 1,1.1- Material released CAI 0 Trichloroethane' DCA Daughter product of TCA under reducing conditions _ 0 Carbon Material released S� 0 Tetrachloride Chloroethane Daughter product of DCA or VG under reducing conditions 0 Ethene/Ethane 0.01 mglL Daughter product of VClethene 0 >0.1 mglL Daughter product of VClethene 0 �i ❑ Chloroform Daughter product of Carbon Tetrachloride -.1 0 Dlchloremethane Daughter product of Chloroform Q ❑ ' rnlulrcd analYsis. W Potntr awmdcd only if it can to s'hr wtk That thr coopmwd iv a daugittcr plvdict SCORE l�et�f (i.r,...I u�c.AL W d n r Ihrwriscs N A PI,I. NYYYQC�'7lfi�_ DATE:06/16/2021 Title: II-9 MNA SCREENING Appendi G O L D E R Project#: 19131339 April 2021 MNA Evaluation X MEMBEROF WSP Prepared By:TJM White Street Landfill, Permit No. 41-03 C-2 Reviewed By: DYR Natural Attenuation Screening Protocol Interpretation Score Scor•e. M SCrW1 to Earl ofTahle Painnuem cyldnnc+ for anaofoh,c r - -•n' ar chtnnr ; • • 0 to 6 LImft I �v ldtlnc•o nor or i[robli biod L%7, a aalr+n' or ChlcrnateG of jar,i[ 6 to 14 ii.e+oninhngn roan kprglnr i•SEI'R p+meed[ViEi'A 1pp+,, iin rrcillc AI fns x�.+na Nrupu 14u. n,,.ry Nar�, A-l-q dw nv,rl.+i— Mr dna.a,iinr hrurjw. . ylmr?4 rrl i'l i lurlr arwrr i,rpnrn "Ira to 20 Stmn7 evidor,ra rrir ana�r[•hlc b,odegradatlon' of Morinated-in4anlcs >20 Concentration In auuno Points Analysis Most Contam. Zone Interpretation l'ee No Awanfed O::ygen' �0.5 mg/L Tolerated, suppresses the reductive pathway at higher concentrations 3 5mg& Not tolerated; however. VC may he oxidised aerobically Q L 0 Nitrate' <1 mg1L At higher concentrations may compete with reductive pathway 2 Iron 11, >1 mgfL Reductive pathway possible; VC may be oxidized under Pe(Ill)-reducing condltlons Sulfate' <20 mg/L Ai higher concentrations may compete with reductive pathway 0 `, ❑ Sulfide' :,-1 mglL Reductive pathway passible 0 0 Methans` ;--0.6 mg/L Ultlmate reductive daughter product, VC Accumulates U p n Oxidation Reduction Potential' {ORP) <50 mlllmofts tmV1 Reductive pathway possible on 1 -100mV Reductive pathway likely I� IF} 0 pH' 5 c pH t 9 Optimal range for reductive pathway try ❑ TOC >20 mg/L Carbon and energy source: drives dechicHnabm can be natural or arithropogenic ❑ Q ❑ Temperature' a2VC At T n20'C biochemical process is accelerated D t- ❑ Carbon Dioxide 72x background Ultimate oxidative daughter product O c4p) 0 Alkalinity �2x background Results from Interactlon of carbon dioxide with aquifer minerals 0 - n I Chloride' s2x background Daughter product of organic chlorine 00 Hydrogen >1 nM Reductive pathway passible. VC may accumulate C D Volatile Fatty Acids >0.1 rug/L Intermediates resulting from biodegradation or aromatic coin ounds: carbon and enel'Cly .source 0 tsl ❑ BTEX, X).1 mg/L Carbon and energy source. drives drehlorinatlon ❑ 0 PCE` Material released 0 Q Cl ICE' Daughter product of PCE '' 0 0 DCE' Daughter product of TCE. If cls is greater than 80% of total DCE it Is likely a daughter roduc of TCE'; 1.1-I)CE can be a chem. reactlon rodoclof TCA `.!1 VC* Daughter product of DC ,.�1 �l 2 1,1.1- Trichloroethane' Material released it 0 OCA Daughter product of TCA under reducing conditions 2 Carbon Tetrachloride Material released _i Ci 0 Chloroetharie' Daughler product of DCA or VC under reducing conditions ,- 0 EthenelEthane 70.01 mWL Daughter product of VClethen e 1 0 >0.1 mg/L Daughter product of VClethene I�'r 0 Chloroform Daughter product of Carbon Tetrachloride D 0 Dichloromethane Daughter product of Chloroform 0 C.) 0 . requtrcd mrakya:. W notnta uwur ri.,l only if it rm Irk Ld-w, ILaI llru curnp—d rs a ri,upJrt.r f,rurli t SCOFF, ResFt riot a cmtslihlenl of the =rct NAPLI. IMIC in G O L D E R MEMBER OF WSP DATE:06/16/2021 Title: SMW-3 MNA SCREENING April 2021 MNA Evaluation White Street Landfill, Permit No. 41-03 Appendi /+X C-3 Project 19131339 Prepared By: TJM Reviewed By: DYR BIOCHLOR Natural Attenuation Decision Support System Version 2.2 Excel '97 TYPE DF CHLDRINATED SC]LVENT........................................... Ethenes Ethanes :5. GENERAL .Simulation Time* 1. ADVECTION C Modeled Area Width* Seepage Velocity" Vs 315-4 ("r) :Modeled Area Length* or '1` 'Zone 1 Length* Hydraulic Conductivity K 2.6E-04 (crrVsec) :Zane 2 Length* Hydraulic Gradient i O.D233621 (nm) EffectivePorosity ..................................................................._�........................... D-Q2 (-}.................... 2. DISPERSION Alpha x* 47.5 (ft) Alpha x (Alpha y)1(Alpha x)" D.1 (-) (Alpha z)1(Alpha x)* 1.E-99 (-) ..............................................................................................................................................................�. 3. ADSORPTION Retardation Factor* - R or I Soil Bulk Density, rho (kg1L) FractionOrganicCarbon, foc 1.0E 4 (-) Partition Coefficient Koc ',.,I PCE 426 (Ukg) 4-62 (-) TCE 130 (Ukg) 2-11 (-) DCE 125 (Ukg) 2-D6 (-) VC 30 (Ukg) 125 (-) ETH 302 (Ukg) 3.57 (-) Common R (used in..modelr = 2.11 ........................ ....................................................................................................... 4. BIOTRANSFORMATION -1st Order Decay Coefficient" C Zone 1 k (11yr) half-life (yrs) Yield PCE -., TCE 0.990 D.7D 0.79 TCE DCE 0.900 D.77 0.74 DCE VC 1.733 DAD 0.84 VC ETH 2-557 D27 0-45 Zone 2 (11yr) half-life (yrs) PCE TCE 0-00.0 f X TCE DCE 0-000 f HELP DCE 4 VC aoac <- VC ETH 0.000 31 (yr) 500 (ft) 4DD 1(ft) 400 (ft) 0 (ft) White St LF Phase II Run Name C L fi Zone 2- L -Zone 1 Data Input Instructions: 115 1- Enter value directly ---- or or 2. Calculate by filling in gray 0.02 cells. Press Enter, then C (To restore formulas, hit "Restore FDrmulas" button ) Variable*- Data used directly in model - Test if Biotransformation Natural Attenuation is Occurring 4 Screening Protocol ....................................................... Vertical Plane Source Determine Source Well SOURCE DATA TYPE: Continuous Source Options I Single Planar Source Thickness in Sat. Zone* 25 I (ft) Y1 Width* (ft) 4DD 14* onc. (n-g1L)* C1 01yr) PCE .02 D TOE .02 D DCE .029 D VC _D12 D ETH 0-015 D Location and Input Solvent Concentrations View of Plume Looking Down Observed Centerline Conc- at Monitoring Wells 7. FIELD DATA FOR COMPARISON f / :PCE Conc. (mg1L) .0 .0 :TCE Conc. (mg1L) 0 .0 DCE Conc. (mg1L) -D06 -0 VC Conc- (mg1L) 10 -D 'ETH Conc. (mg1L) 0.0 .0 77571 35D :Distance from Source (ft) 1 2021 Date Data Collected 8. CHOOSE TYPE OF OUTPUT TO SEE: MEN MEEME Help Restore RESET UN ECENTERLINE RUN ARRAY SEE OUTPUT Paste Example Unproted DISSOLVED CHLORINATEO SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mgiL) at Z-0 Distance from Source 011 PCE He Deee ��nu Ueprtda[nn�rod�xvon —Sapu.mtal I a❑ro r Decay ■ Fen Data tmT tow S.. PCE 0 TOO So. TCE a see DCE 400 sec a 59 100 150 �90 D zaDD s�.tea ,=.a VC c I Sce ETH Oi stance From Source M.j Time: Preps re Ani matlon © Return to To AN To Array Log <=7 Llnear DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (rTWL) at Z=D —Nu Oeg.dab-9,odu lion —seqbat IV order D—, ■ Feb Data tro n site See PCE O 190 Sec TCE L ° Sec DCE m 400 o.o10 - ccc 0 5So.100 150 200 250 300 350 400 AW see vc r�] 9.001 Sea ETH Distance From SolHce (ft) Time: 3i 1 ears Prepare AAlmReturn toatl°T1 fnptlt To AD To Army Lag C� Llnaai OtSSO LVEO CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE tmWi_I at Z-D DICE H.—� cello DegisOeWWnMictlen 5eque al lst Omer Decay f rielaoata T-5lte IUD Sec PCE m E iCE 9100 sec °oll Dal 410A IRA 490 see DcE ROW s �i D 50 IN l50 2GD 25C im :e50 0c a.':0 Sec VC L7 0001 Sec ETH Distance From Source (ft.) Time: r' ears Prepare Animation rra on Input To All To Ay Log �=.}Linear OfSSO LVED CHLORINATED SOLVENT CONIC ENTRATION5 ALONG PLUME CENTERLINE tmgrLI at Z-D 01n DegisOaWrFTM cMn _5eque al 1st Omer Decay ■ F,ela Gaza Tr 511e logo Sce PCE Sec TCE 91tl9 C o Sec DCE n ROW 490 4 5o IN I50 20D 'SC _� ,_1�C - see Vc L1 9901 ■ Sec ETH Distance From Source (R.i Th": prepare Antmalian ' ears Retu In to To RII To Array Log }Linear Input DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (MWLjat Xa7 �Xp Degatlalion�ProtivYbn �Seq�e+rea� 1s[Orter Decay 1 P.ld Data nem Sty $-DIE See PCE S.i T! 0 500 C c o See DOE 0.019 c 200 250 390 350 a00 ECC See Vc 0 0.001 - 400 See ETH Distance From Source (ft.) TIMIK, t ea•s Re turn Prepare Af111natlon to lnp.t Tn all Tn Art �v log �}Llnear BIDCHLDR Natural Attenuation Decision Support System Version 2.2 Excel '97 TYPE OF CHLORINATED SOLVENT: Ethenes Ethanes 1. ADVECTION Seepage Velocity" or Hydraulic Conductivity Hydraulic Gradient Effective Porosity 2. DISPERSION Alpha x* (Alpha y) / (Alpha x)` (Alpha z) / (Alpha x)' ............................................................................................ 3. ADSORPTION Retardation Factor* or Vs K i n 47-5 (ft) 0.1 (-) 1-E-99 l-1 1 315.4 1 5. GENERAL Q :Simulation Time* G Modeled Area Width" (ttlyr) J Modeled Area Length" :Zone 1 Length* 2.6E-04 (cmisec) ;Zane 2 Length* 0-0233621 (ttM) 0-02 (- .................... C alc. Alpha x N. R Soil Bulk Density, rho 1.7 (kg/L) FractionOrganicCarbon, foc 1.0E 4 (-) Partition Coefficient Koc -A PCE 426 (Ukg) 4.62 (-) TCE 13D (Ukg) 2-11 (-) DCE 125 (Ukg) 2-D6 (-) G SOURCE DATA Source Options White St LF Phase II Run Name G 31 (yr) ' L 500 (ft) W Data Input Instructions: 115 —1- Enter value directly ---- or 'r or 2- Calculate by filling in gray 0.02 cells. Press Enter, then C (To restore formulas, hit "Restore Formulas" button ) Variable" Data used directly in model- 4D0 (ft) Test if 400 (ft) Bictransformation Natural Attenuation 0 (ft) Zone 2= is Occurring Screening Protocol _L.. _Zone 1 ............................ vertical P'a e So..rce Ceterrnme Source Well TYPE = Continuous { Location and Input Solver: -Concentrations Single Planar r Source Thickness in Sat. Zone 25 (ft) Y1 Width" (ft) 400 14" Conc. (mg/L)" C1 (1/yr) PCE 0 TCE P02qg 0 DGE 0 VC 012 0 ETH 0.0015 0 View of Plume Looking Down Observed Centerline Conc. at Monitoring Wells VC 30 (Ukg) 1.25 (-) 7. FIELD DATA FOR COMPARISON I / ETH 302 (Ukg) 3-57 (-) PCE Conc- (mg/L) -D 0 Common R (used in model)" = 2.11 :TCE Conc. (mg/L) .0 .0 ........................................................................................................................................................... d. 1310TRANSFORMATION Ast Order Decay Coefficient' DCE Conc. (mg/L) -0 .0 Zone 1 k (1/yr) half-life (yrs) Yield VC Conc- (mg/L) 0-0 .0 PCE _ TCE 0-gg0 f 0-70 0-79 ':ETH Conc. (mg/L) 0-0 .0 TCE — DCE E�2.56 0-77 0-74 :Distance from Source (ft) 1 DO 325 DCE VC F 0-40 0-64 :Date Data Collected 2421 .................................................................................................................................................................................................................................................................. VC ETH D.27 0.45 8. CHOOSE TYPE OF OUTPUT TO SEE: Zone 2 k (1/yr) half-life (yrs) Restore RESET PCE TCE 0.000 F Help TCE DCE 0-000 F HELP T RUN ARRAY DCE VC 0-flflfl F CENTERLINE SEr= Paste VC ETH 0.000 F OU7P#iT Example Unpro#ect DISSOLVED CHLORINATED SOLVENT CONC ENTRAT ONS ALONG PLUME CENTERLINE ImgrLI at Z=Q Neo.ra.cm.,m�,nw. �s.w.n.r rr oaro.�K r O.e o.r rya. low See PCE J_ Q100 I See TCE a Sec SCE 400 im (I-Clio 9 `u iea 150 Y09 7t-0 3Ca 3 ❑ a .[SC sec VC V OOor See ETH distance Frain Source (ft-) Tirar: Prepare Rnlrnati¢n R.W. to input T¢All To Array �oar Log � Lln DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mplLl at Z4 TCE N¢ 07e —N. O.pglm—`�.au..u•iry Barr Oe� • .•.�[ie�mc•_re See ME 0 700 Ser iCE See DCE m 400 0.010 Sec VC 50 100 150 200 250 300 350 400 450 c V 0901 Sev ETH Distance From Source (N,) Tires Prepare Animation `Og 0 0 Y— R Inputm To All To Array DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE Im grLI at Z-0 Olslance tram Source h aCE Q dd 00 120 1. 200 Yd0 2tl0 320 35t7 duo N¢Qeyraaarlpn u024 au25 a024 V024 BG:J �C•;�1 0y:4 I JG44 1GC=•'+ ❑G . I�...- -- Monitoring Wei; LOealons ifrl f00 Fleld Datafo Slle 0000 1 0006 I See ME g 0109 Se. TCE ° Sc. ocE aQ9 0610 m 50 loll 150 200 i50 's=] e0p 4;0 See VC 0 0001 Sec ETH Distance From SOurCe (It.) Time: r i r..ys qt.- to Pr2par2 Animan tln Log?furear Input To All To Array DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE [araVQat Z�0 —N. pe4¢awenaeduobi 4wem.i 10 OEM WaY -e n.. fe— sre _ 1am Sce PCE 01Gp- Scc TCE C ° Sec 0CE 06rp — 406 C ❑ 50 11!; 1:A 200 : 5❑ Sec VC V 0[q] Sec ETH Distsnce From Source (ft.) Time: r 'feces Rolum to Prcpsrc Artlmallon tog �7 Linear Input To All is May DISSOLVED CHLORINATED SOLVENT CC NC ENTRATION5 ALONG PLUME CENTERLINE Img+L) at Zm0 —xe vrn¢e.,w�m..euman—s.wmu.e m uo.•c..rr wu or, rro.� i+. OW Sec PCE 0 i m $ec TCE See DCf G 010 Sec VC i 200 250 300 350 AUG C [i OOotlBA�e9066-- 400 Sec EiH Drslance Pram Source (ft.) TFY: Prepare ArYmat3on - �aL�ePa+ RLlripul[•' Tu Ali T. A,,.,, S 610CHL0R Natural Attenuation Decision Support System Version 2.2 Excel '97 TYPE OF CHLORINATED SOLVENT- Ethenes �F Ethanes �^ 1. ADVECTION Seepage Velocity* or Hydraulic Conductivity Hydraulic Gradient Effective Porosity ........................................................................................... 2. DISPERSION Alpha x* (Alpha y)! (Alpha x)* (Alpha z) / (Alpha xr ........................................................................................... 3. ADSORPTION Retardation Factor* or Vs 1 315.4 K 2.6E-D4 (crnrsec) i D.D233621 (Wn) n D_D2 (-) 4T(ft) GalC. _5 Alpha x 0.1 (-} 1.E-99 (-} Gi Soil Bulk Density, rho 1.7 (kglL) Fraction Organic Carbon, foc Partition Coefficient Koc PCE 426 (Likg) 4.62 (-} TCE 130 (Likg) 2.11 (-} DCE 125 (Likg) 2.D6 (-} VC 30 (Llkg) 1.25 (-} ETH 302 (Likg) 3.57 (-} Common R (used in madeIr = 2.1 .......................................................................................................................................................... ..................... 4. BIOTRANSFORMATION -1st Order Decay Coefficient' Zone 1 r- (1tyr) half-life (yrs) Yield PCE TCE o.990 '� 0.70 0.79 TCE` DCE o.900 <- D_77 0.74 DCL VC 1.733 <- DAD C.&4 V ETH 2.5&7 0.27 0.45 Zane 2 <::::� r- (1tyr) half-life (yrs) PC TCE C.o00 TCE DCE o.000 � HEL DCE VC o.000 <- V ETH o.000 <- 5. GENERAL Simulation Time* Modeled Area Width* Modeled Area Length* Zone 1 Length* Zone 2 Length* White St LF Phase II Run Name + L (ft)(ft) E31(yr) (ft) Zone 2= 0 (ft) L - Zone 1 6. SOURCE DATA TYPE: Continuous Source Options Single Planar Source Thickness in Sat. Zone 25 (ft) Y1 Width* (ft) 900 14* Conc_ (mgiL)* C1 (1lyr) PCE .02 D TCE .02 0 DCE VC 029 0 0� 012 ETH 0.0015 0 7, FIELD DATA FOR COP PCE Conc. (mg/L) TCE Conc_ (mg1L) C DCE Conc. (mgfL) VC Conc_ (mgfL) ETH Conc. (mg1L) Distance from Source (ft) .Date Data Collected ........................................................................................ CHOOSE TYPE OF OI Al RUN CENTERLINE Data Input Instructions: 115 1- Enter value directly.... or 4, or 2_ Calculate by filling in gray .............. J0.02 cells_ Press Enter, then C1 (To restore formulas, hit "Restore Formulas" button } Variable*- ' Data used directly in model. Test if Natural Attenuation Biotransformatiar4 screening Protocol is Occurring Vertical Plane Source: Determine Source Well Location and Input Solvent CDncentrations View of Plume Looking Down Observed Centerline Conc. at Monitoring Wells IPARISON ! / _D 0 _D 0 _D _011 D.D _002 0.0 .0 250 1 450 2021.................................................................................................................................................................................................................................................... ITPUT TO SEE: RUN ARRAY Help restore RESET I`"' SEE OUTPUT Paste Unpi. mted DISSOLVED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME CENTERLINE (mgfLI at Z-0 Distance from source RI PCE Q 1 60 too Isla 20D I 2SD I QW 1 3% 1 AQa 1 460 do radallon :] 02Q J 7?[r O.v2a Q rQ V 0:a Q.D-A ❑ wo ❑ 020 0 020 0O:O ebNNkfM•mdlAe 007M 0017 o.o1S act3 C.Ct+ Coto CAos O.UN OM7 DOW Monitoring well L; dons (ft FIVW Dora from site o Dov ❑ Doc +..He llq.lNonFwGucLm �sewrneei 1Y axr Deter r�nw nrie from sw t ODD - See PCE o sDa S.e TCE G v_ See DCE 600 C.010 q r00 200 sop 50. See VC C G OOQ1 Sec ETH Distance From SourmQL) Tlme: Prepare Animation toe<xa Relurn To Air rm T. Ay leper LngG==.�Lmear D1 S SO LV ED CHLORINATED SOLVENT CONCENTRATIONS ALONG PLUME C ENTERLINE I+rlwt.I at 1=0 Distance from Source R TCE 11 O 6D 10a ISO 200 2,50 3OQ 350 COD 45U SQD ep D.proualron 9 ❑ ❑Da n:, n 970 P GPO O vi0 ❑ C7Q ❑ Olt) il.lt"dl Q DN C Cer' Blotrandnm.110 C.CQDD ❑ing ❑019, 0O1ae 0017 oCrB O.CiS DAra 0.013 0D12 D.Dt! Mvnitorin well Locatlana R Field Data Nam SSa O DOD ❑ 000 —WvtvsCwwvF4W M ---�aquwll 11Y ertlrr Dewy a rWn d,r epn 5e• Ow - See PCE TCE C tooSea — See DCE 60D ❑ofo I see VC O IOC 200 S&AC6 5D0 Sob Lj 00111 Bee ETH Distance From Source (pi.) Tfine: Prepare AN oration r Reparn to To All To Array Low=7Lne®r input 01 SSOLVEO CHLORINATED SOLVENT CO NC ENTIRA TIONS ALONG PLUME CENTERLINE iwyl1 at Z-0 .•. W Devemaorm c•amm &:.irnna +� rxncr near . F.yp aei..om.sie 1 See PCE 79 5- TCE ❑1CC — 50O Sec OCE ❑ otD - v ce 200 aoo ee•o 10D 50C see VC C 1�ot See ETH Distance From Source (ft.) 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