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HomeMy WebLinkAbout4103_Guilford_WhiteStreet_PhaseI_April22GW_FID1703911_20220801I It 7 NR USE OHI Y ElPoEer Report ❑Electronic Data - Email CD (data loaded: Yes / No Doc/Event #' NC DENR Environmental Monitoring Division of Waste Management - Solid Waste R000rtina Form Notice: This form and any information attached to it are "Public Records" as defined in NC General Statute 132-1. As such, these documents are available for inspection and examination by any person upon request (NC General Statute 132-6). Instructions: • Prepare one form for each individually monitored unit. Please type or print legibly. • Attach a notification table with values that attain or exceed NC 2L groundwater standards or NC 26 surface water standards. The notification must include a preliminary analysis of the cause and significance of each value, (e.g. naturally occurring, off -site source, pre-existing condition, etc.). • Attach a notification table of any groundwater or surface water values that equal or exceed the reporting limits_ Attach a notification table of any methane gas values that attain or exceed explosive gas levels. This includes any structures on or nearby the facility (NCAC 13B .1629 (4)(a)(i). Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCDENR-DWM. Solid Waste Section, 1646 Mail Service Center, Raleigh, NC 27699-1646. Solid Waste Monitoring Data Submittal Information Name of entity submitting data (laboratory, consultant, facility owner): Golder Associates NC, Inc. on behalf of City of Greensboro Field Operations Department Contact for questions about data formatting. Include data preparer's name, telephone number and E-mall address: Name: David Y Reedy 11, PG Phone: (336) 852-4903 E-mail: david.reedy@wsp.com NC Landfill Rule: Actual sampling dates (e.g., Facility name: Facility Address: Facility Permit # (.0500 or .1600) October 20-24, 2006) White Street Landfill - Phase 1 2503 White St, Greensboro. NC 27405 41-03 -1600 April 19 - 21, 2022 Environmental Status: (Check all that apply) Initial/Background Monitoring ❑X Detection Monitoring [] Assessment Monitoring Corrective Action of data submitted: (Check all that apply) Groundwater monitoring data from monitoring wells Groundwater monitoring data from private water supply wells Leachate monitoring data Surface water monitoring data Methane gas monitoring data Corrective action data (specify) Other(specify) Notification attached? No. No groundwater or surface water standards were exceeded. X Yes. a notification of values exceeding a groundwater or surface water standard is attached. It includes a list of groundwater and surface water monitoring points, dates, analytical values, NC 2L groundwater standard, NC 28 surface water standard or NC Solid Waste GWPS and preliminary analysis of the cause and significance of any concentration. Yes, a notification of values exceeding an explosive methane gas limit is attached. It includes the methane monitoring points, dates, sample values and explosive methane gas limits. Certification To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct Furthermore, I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas levels, and a preliminary analysts of the cause and significance of concentrations exceeding groundwater standards, I am aware that there are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment. David Y Reedy II, PG Signature Sr Lead Consultant, Geologist (336) 852-4903 Title (Area Code) Telephone Number Golder Associates NC, Inc., 58 Oak Branch Drive, Greensboro. NC 27407 Facility Representative Address C-2862 NC PE Firm License Number (if applicable effective May 1, 2009) Revised 6r2009 f� 2 Date Affix NC Licensed/ Professional Geologist Seal GOLDER REPORT FIRST SEMI-ANNUAL 2022 WATER QUALITY MONITOIRNG REPORT White Street Landfill - Phase 1, Permit No. 41-03 Submitted to: City of Greensboro Field Operations Department 401 Patton Avenue Greensboro, North Carolina 27406 August 1, 2022 Distribution List 19131339.105 Richard Lovett, PG, Environmental Compliance Support Manager, Field Operations, City of Greensboro, 401 Patton Avenue, Greensboro, NC 27406. 336-373-4188. Richard.Lovett@greensboro-nc.gov Michael Szychowicz, Landfill Compliance Supervisor, Field Operations, City of Greensboro, 2503 White Street, Greensboro, NC 27405. 336-254-8096. Michael.Szychowicz@greensboro-nc.gov Jackie Drummond, Department of Environmental Quality, Division of Waste Management - Solid Waste Section, 2090 US Highway 70, Swannanoa, NC 28778. 828-296-4706. jaclynne.drummond@ncdenr.gov W,I) GOLDER August 2022 Executive Summary 19131339.105 On behalf of the City of Greensboro, Golder Associates NC, Inc., member of WSP (Golder), is submitting the enclosed Water Quality Monitoring Report, which documents the results of the April 19 - 21, 2022, semi-annual compliance monitoring event for the Phase I facility at the White Street Landfill. Barium was detected at a quantifiable concentration above the NC 2L Standard in the sample from downgradient well 1-4 during this event, as it has been historically. Also, two North Carolina (NC) Appendix I volatile organic constituents (VOCs), benzene and 1,4-dichlorobenzene, were detected at quantifiable concentrations above their respective NC 2L Standards in the sample from downgradient well 1-1 at concentrations similar to previously detected concentrations. The constituent 1,4-dioxane was detected at downgradient wells 1-1, 1-2, 1-3, and 1-4 at quantifiable concentrations above the NC 2L Standard, as it has been previously; however, this parameter is not required by regulation or permit. In general, detected constituents and concentrations are consistent with historical data. No NC Appendix constituents were reported in surface water samples above applicable surface water standards during the April 2022 event. Based on these results, the City of Greensboro will continue groundwater monitoring in accordance with the requirements outlined in NCSWMR 0.600 Rules. The next semi-annual monitoring event is tentatively scheduled for October 2022. %%NJ) GOLDER August 2022 Table of Contents 101V-1KnolIitop, 1.0 INTRODUCTION.............................................................................................................................................1 1.1 Site Description and Background.........................................................................................................1 1.2 Compliance Monitoring History ............................................................................................................1 1.3 Hydrogeologic Setting..........................................................................................................................2 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION..................................................3 2.1 Visual Inspection Program...................................................................................................................3 2.2 Well Network and Groundwater Elevation Measurements..................................................................3 2.3 April 2022 Monitoring Event................................................................................................................3 2.4 Laboratory Analysis Program..............................................................................................................4 3.0 LABORATORY AND FIELD QA/QC...................................................................................................4 4.0 DATA EVALUATION............................................................................................................................4 4.1 North Carolina Groundwater and Surface Water Quality Standard Comparisons...............................4 5.0 SUMMARY..........................................................................................................................................5 6.0 REFERENCES....................................................................................................................................5 No table of figures entries found.TABLES TABLE 1 Summary of Historical Groundwater Elevation Data TABLE 2 Summary of Estimated Horizontal Flow Velocities TABLE 3 Summary of Well Construction Information TABLE 4 Summary of Groundwater Monitoring Results TABLE 5 Summary of Groundwater Field Parameters TABLE 6 Summary of Surface Water Monitoring Results TABLE 7 Summary of Surface Water Field Parameters %%till GOLDER iii August 2022 FIGURES FIGURE 1 Groundwater Surface Contour Map, April 19, 2022 FIGURE 2 Surface Water Location Map APPENDICES APPENDIX A Groundwater and Surface Water Sampling Logs 19131339.105 APPENDIX B Groundwater, Surface Water, and Leachate Certificates -of -Analysis, Chain -of -Custody Forms, and Laboratory Data Review %%NJ) GOLDER iv August 2022 19131339.105 1.0 INTRODUCTION This report summarizes the monitoring results from the April 19 - 21, 2022, groundwater and surface water sampling event at Phase I of the White Street Landfill in Greensboro, North Carolina (NC). The closed municipal solid waste (MSW) landfill is monitored in accordance with Title 15A of the North Carolina Administrative Code (NCAC) Subchapter 13B. Section 0.600 The facility is located in central Guilford County and is comprised of a closed, unlined MSW facility (Phase 1), an active unlined construction and demolition debris (C&D) over MSW facility (Phase 11), an active Subtitle D MSW facility (Phase 111), and an active Type I compost facility. 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 11 landfills, which are covered under Permit No. 41-03. The southwestern portion of the facility is comprised of the Phase 111, which is covered under permit No. 41-12. The water quality monitoring results for the Phase II 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. 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. 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. 1.2 Compliance Monitoring History Groundwater monitoring at the facility was initiated in 1994. The facility's approved monitoring network for the Phase I landfill is currently comprised of five groundwater monitoring wells, which monitor the uppermost aquifer beneath the facility. Monitoring well MW-13 is an upgradient background well for both the Phase I and the Phase II landfills. Monitoring wells 1-1, 1-2, 1-3, and 1-4 are downgradient compliance wells for the Phase I landfill. The monitoring well locations are shown on Figure 1. The monitoring parameters for Phase I groundwater samples are NC Appendix I volatile organic constituents (VOCs) and the eight Resource Conservation and Recovery Act (RCRA) metals; samples are collected semi-annually. The constituent 1,4-dioxane was also analyzed during this event per the May 29, 2018, NC DEQ memorandum. The facility's monitoring network also includes five surface water monitoring points, which are shared with the Phase II waste unit. Surface water monitoring points SW-1, SW-2, and SW-3 are upstream monitoring locations and SW-4 and SW-5 are downstream monitoring locations. Surface water point SW-1 is located along North Buffalo Creek, west of the facility, along Summit Avenue. Surface water point SW-2 is located west of the facility and collected from a tributary to North Buffalo Creek that flows from south to north. 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 point SW-4 is located downstream of the facility along North Buffalo Creek. Surface water point SW-5 is located within the facility's property, at the northern end of the \\till GOLDER August 2022 19131339.105 Phase II landfill off Rankin Mill Road. The locations of the surface water points are shown on Figure 2. Points SW-1, SW-2, SW-3, and SW-4 are also shared with the Phase III landfill's monitoring network. Surface water samples are analyzed for NC Appendix I list of constituents semi-annually. 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 and is also 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 in undeveloped areas at depths of approximately 1 to 20 feet below ground surface. Depth to water measurements, obtained on April 19, 2022, are summarized in Table 1 and were used to prepare a groundwater surface contour map presented on Figure 1. As presented, the groundwater flow in the uppermost aquifer beneath the site is generally to the northwest toward North Buffalo Creek, which is located along the northwestern property boundary of the site. The groundwater surface contour map and interpreted flow directions are generally consistent with previously submitted groundwater contour maps and flow directions for this facility. Based on the April 2022 groundwater surface contour map, the hydraulic gradient in the uppermost aquifer that underlies the site, as measured along the conceptual flow paths shown on the contour map, was calculated to average 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). Although no data is available for the Phase I landfill, it is assumed that the whole facility either share hydrogeologic units or have similar characteristics (S&ME, 2017). 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 225 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. \\till GOLDER August 2022 19131339.105 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION Field activities conducted as part of the April 2022 sampling event are discussed in the following sections 2.1 Visual Inspection Program To detect a potential release at the earliest possible time, the visual inspection program is used at the Phase I landfill by the sampling personnel. This program includes physical indicators such as potential water table mounding beneath the waste management unit, physical examination of any stresses in biological communities, visible signs of leachate migration (i.e., leachate seeps), unexplained changes in soil characteristics, and any other change to the environment due to the waste management unit. During this compliance monitoring event, no physical indicators of a potential release were observed in the vicinity of the waste management areas by the sampling personnel. 2.2 Well Network and Groundwater Elevation Measurements The current network of groundwater monitoring wells at the Phase I landfill consists of one upgradient well (MW-13) and four downgradient wells (1-1, 1-2, 1-3, and 1-4). Available monitoring well construction information for the Phase I 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 - 20 feet (plus or minus) under normal conditions. 2.3 April 2022 Monitoring Event Personnel from Golder visited the facility from April 19 - 21, 2022 to purge and sample monitoring wells and to sample surface water monitoring points. Monitoring wells were purged and sampled using the dedicated pumps at the facility following low -flow micropurge procedures. Measurements of temperature, pH, specific conductivity, turbidity, dissolved oxygen, and oxidation reduction potential were recorded on approximately 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 300 milliliters per minute. Purging was continued until stabilization was indicated by the water quality parameters. Prior to sampling, the laboratory -supplied sample containers were prepared. Each sample container was labeled with the sample identification number, sampling personnel, date and time of sample collection, project name and number, and requested chemical analyses. The required groundwater samples were collected directly from the dedicated bladder pump's discharge lines in the labeled, laboratory -supplied, pre -preserved sample containers after purging was completed based on stabilization of all water quality parameters. After collection, the samples were placed in a cooler on ice, under \\till GOLDER August 2022 19131339.105 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 away from the current flow, taking care to prevent the overflow of the sample containers and to minimize sample -induced turbidity. Measurements of temperature, pH, specific conductivity, turbidity, dissolved oxygen, and oxygen reduction potential were measured directly from the stream and recorded during the collection of the surface water samples. After collection, the surface water samples were placed in a cooler on ice, under chain -of -custody control. Copies of the sampling logs are presented in Appendix A. Included in each log is a description of the sampling equipment, sampling location, sampling method, field observations, and water quality measurements. 2.4 Laboratory Analysis Program The April 2022 groundwater and surface water samples were submitted to Environmental Conservation Laboratories, Inc. (ENCO) of Cary, NC under chain -of -custody control for analysis. Groundwater samples were analyzed for NC Appendix I VOCs, RCRA metals, and 1,4-dioxane. The Phase I and Phase II landfills share background monitoring well MW-13 and therefore, MW-13 was analyzed for Appendix I inorganic and VOCs plus mercury and 1,4-dioxane. Surface water samples were analyzed for NC Appendix I constituents and 1,4-dioxane. The samples were received at the laboratory in good condition and were properly preserved. 3.0 LABORATORY AND FIELD QA/QC A laboratory -prepared trip blank accompanied the volatile sample containers to and from the laboratory. ENCO analyzed the trip blank for NC Appendix II VOCs. A field blank was collected for the Phase III landfill and was compared to the surface water samples, which are shared between the Phase I, Phase 11, and Phase III landfills. Reviews of the laboratory data were performed by Golder personnel and are included in Appendix B. No irregularities were identified during our review of the laboratory results. There were no detections of RCRA metals or NC Appendix I constituents in the laboratory method blanks and therefore no additional data qualification was required. 4.0 DATA EVALUATION The results of the data evaluations are presented in the following sections. 4.1 North Carolina Groundwater and Surface Water Quality Standard Comparisons As presented in Table 4, barium was detected at a quantifiable concentration above the practical quantitation limit (PQL) and the NC 2L Standard at monitoring well 1-4 during the April 2022, as it has been during recent events. Benzene and 1,4-dichlorobenzene were detected at quantifiable concentrations above their respective PQLs and NC 2L Standards in the sample from downgradient monitoring well 1-1, as they have been during recent events. No other NC Appendix I VOCs or RCRA metals were detected at concentrations above the applicable groundwater standards. Above -standard concentrations are generally stable over recent sampling events. The constituent 1,4-dioxane was detected at concentrations above the PQL and NC 2L Standard at downgradient wells 1-1, 1-2, 1-3, and 1-4 as it has been previously; however, this parameter is not required by regulation or permit. %%till GOLDER August 2022 19131339.105 As shown in Table 6, no NC Appendix I constituents were reported above their respective PQLs and applicable surface water standards during the April 2022 event. 5.0 SUMMARY Based on the results summarized herein, the City of Greensboro will continue monitoring the uppermost aquifer beneath this facility in accordance with the requirements outlined in NCSWMR 0.600. The next sampling event is tentatively scheduled for April 2022. 6.0 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, Greensboro, NC, January 2017, White Street Landfill — Phase I, Permit No. 41-03, Post -Closure Monitoring, September 2016. %%till GOLDER 5 August2022 Signature Page Golder Associates NC, Inc. David 'Dusty" Y Reedy ll, PG Rachel P Kirkman, PG Sr Lead Consultant, Geologist Director, Geologist Engineering Lic. No. C-2862/Geology Lic. No. C-399 19131339.105 Golder Associates NC, Inc. is a licensed user of the Golder trademark, and an associated operating entity. https://golderassociates-my.sharepoint.com/personal/jserencsics_golder_com/documents/documents/reports/white st phase i 2022/19131339 white street phase i draft 1st sa wgmr 2022.docx %%%I) GOLDER August2022 19131339.105 TABLES %%%I) GOLDER August 2022 19131339.105 TABLE 1 Summary of Historical Groundwater Elevation Data White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Well IDs MW-13 1-1 1-2 1-3 1-4 TOC Elevation 741.24 713.75 703.09 707.43 694.94 (ft AMSL) Date Elev DTW Elev DTW Elev DTW Elev DTW Elev DTW 10/14/98 718.61 22.69 765.90 10.21 763.28 5.30 750.43 14.22 753.76 6.07 03/25/99 722.11 19.19 759.43 16.68 748.54 20.04 749.06 15.59 750.97 8.86 09/22/99 721.32 19.98 767.74 8.37 752.25 16.33 752.13 12.52 757.61 2.22 03/27/00 722.49 18.81 769.13 6.98 764.37 4.21 752.90 11.75 757.61 2.22 09/13/00 722.37 18.93 767.81 8.30 763.98 4.60 752.22 12.43 757.53 2.30 03/12/01 721.80 19.50 768.57 7.54 763.87 4.71 752.61 12.04 757.61 2.22 09/13/01 720.98 20.32 766.28 9.83 763.65 4.93 751.12 13.53 755.74 4.09 03/07/02 719.08 22.22 767.92 8.19 763.73 4.85 752.40 12.25 757.66 2.17 09/18/02 722.10 19.20 766.67 9.44 763.54 5.04 751.49 13.16 757.69 2.14 04/15/03 724.59 16.71 769.48 6.63 764.20 4.38 753.62 11.03 757.97 1.86 10/15/03 722.82 18.48 767.97 8.14 764.12 4.46 752.22 12.43 757.89 1.94 03/24/04 722.42 18.88 768.55 7.56 763.94 4.64 752.10 12.55 757.70 2.13 09/22/14 722.56 18.74 767.47 8.64 763.80 4.78 751.90 12.75 757.84 1.99 05/10/05 722.14 19.16 766.30 9.81 763.73 4.85 754.89 9.76 757.60 2.23 10/11 /05 719.72 21.58 765.57 10.54 763.53 5.05 750.66 13.99 754.33 5.50 04/24/06 720.25 21.05 767.17 8.94 763.92 4.66 751.62 13.03 757.34 2.49 10/20/06 721.69 19.61 766.28 9.83 763.42 5.16 750.83 13.82 756.23 3.60 04/10/07 721.61 19.63 705.35 8.40 698.20 4.89 694.67 12.76 692.55 2.39 09/25/07 717.41 23.83 702.67 11.08 696.89 6.20 691.35 16.08 686.94 8.00 05/02/08 722.96 18.28 707.14 6.61 698.49 4.60 695.80 11.63 692.74 2.20 12/05/08 -- -- 704.22 9.53 698.08 5.01 693.82 13.61 692.36 2.58 04/16/09 722.87 18.37 707.47 6.28 698.43 4.66 695.67 11.76 693.33 1.61 10/07/09 721.70 19.54 703.57 10.18 697.81 5.28 692.93 14.50 689.81 5.13 04/28/10 -- -- 705.36 8.39 698.32 4.77 694.41 13.02 692.80 2.14 10/05/10 721.13 20.11 705.09 8.66 697.84 5.25 693.48 13.95 692.31 2.63 05/10/11 722.33 18.91 706.23 7.52 697.43 5.66 695.15 12.28 693.03 1.91 10/06/11 719.26 21.98 703.25 10.50 697.68 5.41 693.29 14.14 691.55 3.39 04/16/12 721.34 19.90 704.67 9.08 698.39 4.70 694.54 12.89 693.08 1.86 10/24/12 719.13 22.11 703.55 10.20 697.84 5.25 693.11 14.32 692.19 2.75 04/24/13 721.96 19.28 706.10 7.65 698.28 4.81 694.43 13.00 692.94 2.00 09/09/13 721.66 19.58 705.21 8.54 697.94 5.15 693.29 14.14 691.85 3.09 04/22/14 723.00 18.24 707.24 6.51 698.81 4.28 695.49 11.94 693.22 1.72 10/01/14 717.90 23.34 701.58 12.17 696.98 6.11 690.96 16.47 687.74 7.20 04/07/15 720.64 20.60 705.92 7.83 698.06 5.03 694.42 13.01 692.93 2.01 10/06/15 723.23 18.01 705.30 8.45 697.88 5.21 693.42 14.01 692.37 2.57 04/18/16 721.94 19.30 706.34 7.41 698.54 4.55 694.36 13.07 692.79 2.15 09/26/16 721.03 20.21 702.87 10.88 697.68 5.41 691.94 15.49 689.87 5.07 04/25/17 722.07 19.17 707.28 6.47 698.95 4.14 696.82 10.61 693.62 1.32 10/16/17 720.11 21.13 704.53 9.22 697.64 5.45 692.16 15.27 690.25 4.69 04/16/18 722.80 18.44 707.47 6.28 698.88 4.21 695.81 11.62 693.48 1.46 10/16/18 723.22 18.02 704.43 9.32 695.58 7.51 695.64 11.79 692.40 2.54 04/08/19 723.66 17.58 705.26 8.49 696.24 6.85 695.31 12.12 692.07 2.87 10/07/19 720.82 20.42 701.29 12.46 694.92 8.17 691.89 15.54 689.95 4.99 04/20/20 722.86 18.38 704.35 9.40 696.55 6.54 694.90 12.53 692.04 2.90 10/13/20 724.25 16.99 705.19 8.56 696.99 6.10 695.84 11.59 691.99 2.95 04/27/21 723.49 17.75 704.90 8.85 698.99 4.10 694.47 12.96 691.85 3.09 10/12/21 722.58 18.66 703.80 9.95 698.46 4.63 693.48 13.95 691.54 3.40 04/19/22 723.91 17.33 705.18 8.57 698.39 4.70 696.01 11.42 691.92 3.02 MEAN 721.69 19.57 726.90 8.94 720.60 5.68 714.61 13.09 714.80 3.12 MAXIMUM 724.59 23.83 769.48 16.68 764.37 20.04 754.89 16.47 757.97 8.86 MINIMUM 717.41 16.71 701.29 6.28 694.92 4.10 690.96 9.76 686.94 1.32 Notes: 1. ft AMSL = feet above mean sea level. 2. -- = not measured or no data 3. TOC = top of casing 4. NI = not installed 5. MW = monitoring well Water 7. Well TOC survey conducted 2013-2014 by S&ME, Inc. for more accurate elevations. ,NCI) GOLDEP 1of1 August 2022 TABLE 2 Summary of Estimated Horizontal Flow Velocities White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 April 2022 Gradient Gradient Gradient Horizontal Effective Hydraulic Calculation Flow Segment Length Segment Gradient Porosity Conductivity Velocity Segment Direction (feet) Elevations feet) (ne) (K, cm/sec) (VgW, feet/year) (feet)(i, i Northwest 1785 --------690-------- 0.0168 0.02 2.61 E-04 227 i2 North -Northwest 1809 --------690------- 0.0166 0.02 2.61E-04 224 Average i Average VFW 0.0167 225 Notes: 1. Horizontal velocities based on the modified Darcy equation VgW = Ki/ne. 2. Values for K were based on the geometric mean of slug test values from all site monitoring wells. 3. The effective porosity for saprolite was used in velocity calculations. 4. cm/sec = centimeters per second 1N I) GOLDER 1of1 August 2022 TABLE 3 Summary of Well Construction Information White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Top -of - Monitoring Well Casing Well Well Screened Interval Geology of Screened Well Identification Northing Easting Date of Construction Elevation Depth Diameter (ft bgs) Interval Status (feet) (inches) (ft AMSL) 1-1 859779.0057 1785681.4037 07/14/89 713.75 24 2 14 24 PWR Active 1-2 860676.2436 1785350.8942 07/14/89 703.09 24 2 14 24 Sandy Silt Active 1-3 861283.9207 1785321.4743 07/14/89 707.43 24 2 14 24 Sandy Silt Active 1-4 861952.8335 1786141.9027 07/14/89 694.94 15 2 5 15 Sandy Silt Active MW-13 858763.9106 1783188.5206 07/14/89 741.24 34 2 19 34 Sandy Silt Active Notes: 1. ft AMSL= feet above mean sea level 2. ft bgs = feet below ground surface 3. MW = monitoring well 4. PWR = partially weathered rock 5. Unless otherwise noted, well construction survey information, Water Quality Monitoring Reports and Water Quality Monitoring Plans provided by Survey Solutions S&ME. %NCI) GOLDER 10f1 August 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Arsenic ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND NC 2L = 10 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND EPA MCL = 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 05/02/08 2.0 -- 10 2.4 J ND ND ND ND ND ug/L 12/05/08 2.8 -- 10 ND ND ND ND ND ND ug/L 04/16/09 2.8 -- 10 ND 3.3 J ND 3.3 J 4.7 J ND ug/L 10/07/09 2.8 -- 10 ND ND ND ND 3.38 J ND ug/L 04/28/10 2.8 -- 10 ND ND ND ND ND ND ug/L 10/11/10 2.8 -- 10 ND ND 3.38 B ND 9.10 B -- ug/L 05/10/11 2.8 -- 10 ND 5.68 J 4.72 J ND ND ND ug/L 10/06/11 2.8 -- 10 ND ND ND ND ND ND ug/L 04/16/12 2.8 -- 10 ND 4.23 J ND ND ND ND ug/L 10/24/12 2.8 -- 10 3.75 J 4.25 J ND ND 5.15 J ND ug/L 04/24/13 2.8 -- 10 ND ND ND ND ND ND ug/L 09/10/13 5.4 -- 10 ND ND ND ND ND ND ug/L 04/22/14 5.4 -- 10 ND 7.71 J ND ND ND ND ug/L 10/06/14 5.4 -- 10 ND ND ND ND ND ND ug/L 04/07/15 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 04/26/16 6.8 -- 10 ND ND ND ND ND ND ug/L 09/28/16 6.8 -- 10 ND 7.07 J 9.93 J ND ND ND ug/L 04/27/17 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 ND ND ND ug/L 10/18/18 7.6 10 -- ND ND ND ND ND ND ug/L 04/08/19 7.6 10 -- ND ND ND ND ND ND ug/L 10/09/19 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 10/13/20 7.6 10 -- ND ND ND ND ND ND ug/L 04/29/21 7.6 10 -- ND ND ND ND ND ND ug/L 10/12/21 7.6 10 -- ND ND ND ND ND ND u /L 04/21/22 7.6 10 -- ND ND ND ND ND ND Barium ug/L 03/01/00 -- -- 500 ND ND 690 ND 910 ND NC 2L = 700 ug/L ug/L 09/01/00 -- -- 500 ND ND ND ND 800 ND EPA MCL = 2000 ug/L ug/L 03/01/01 -- -- 500 ND ND ND ND 900 ND ug/L 09/01/01 -- -- 500 ND ND ND ND 990 ND ug/L 03/01/02 -- -- 500 ND ND ND ND 1300 ND ug/L 09/01/02 -- -- 500 ND ND ND ND 540 ND ug/L 04/01/03 -- -- 500 ND ND ND ND 780 ND ug/L 10/01/03 -- -- 500 ND ND 650 ND 580 ND ug/L 03/01/04 -- -- 500 ND ND ND ND ND ND ug/L 09/01/04 -- -- 500 ND ND 730 ND ND ND ug/L 05/01/05 -- -- 500 ND ND ND ND 730 ND ug/L 10/01/05 -- -- 500 ND ND 550 ND 870 ND ug/L 04/01/06 -- -- 500 ND ND 575 ND 744 ND ug/L 10/01/06 -- -- 500 ND ND 514 ND 930 ND ug/L 04/10/07 -- -- -- 120 173 580 144 624 ND ug/L 09/25/07 -- -- -- 130 153 497 125 480 ND ug/L 05/02/08 0.2 -- 100 -- 371 634 128 964 ND ug/L 12/05/08 1.0 -- 100 127 1.1 375 180 812 ND ug/L 04/16/09 4.2 -- 100 -- 580 506 117 693 ND ug/L 10/07/09 1.0 -- 100 119 230 B 517 B 190 B 556 B -- ug/L 04/28/10 1.0 -- 100 112 304 489 112 508 ND ug/L 10/11/10 1.0 -- 100 -- 198 507 135 456 ND ug/L 05/10/11 1.0 -- 100 108 639 347 160 906 ND ug/L 10/06/11 1.0 -- 100 115 389 307 170 651 ND ug/L 04/16/12 1.0 -- 100 112 664 528 153 677 ND ug/L 10/24/12 1.0 -- 100 104 631 358 163 696 ND ug/L 04/24/13 1.0 -- 100 120 683 286 149 635 ND ug/L 09/10/13 1.0 -- 100 85.9 J 590 426 146 585 ND ug/L 04/22/14 1.0 -- 100 98.7 J 732 483 128 585 ND ug/L 10/06/14 1.0 -- 100 88.3 J 585 524 136 537 ND ug/L 04/07/15 1.0 -- 100 105 792 598 156 596 ND ug/L 10/07/15 1.0 -- 100 93.3 J 484 576 151 376 ND ug/L 04/26/16 1.0 -- 100 91.3 J 672 513 135 699 ND ug/L 09/28/16 1.0 -- 100 85.1 J 623 532 135 628 ND ug/L 04/27/17 1.0 -- 100 96.6 J 693 291 131 554 ND ug/L 10/17/17 1.0 -- 100 94.1 J 665 465 148 669 ND ug/L 04/16/18 1.0 -- 100 82.7 J 705 512 131 751 ND ug/L 10/18/18 1.1 10 -- 94.5 660 499 136 546 ND ug/L 04/08/19 1.1 10 -- 95.9 724 233 71 599 ND ug/L 10/09/19 1.1 10 -- 89.0 648 444 135 795 ND ug/L 04/20/20 1.1 10 -- 98.9 652 236 69.5 672 ND ug/L 10/13/20 1.1 10 -- 112 659 448 112 710 ND ug/L 04/29/21 1.1 10 -- 88.6 657 486 45.5 748 ND ug/L 10/12/21 1.1 10 -- 89.8 672 530 142 828 ND ug/L 04/21/22 1.1 10 -- 97.9 538 455 71.6 754 ND L D E P 1 of 12 August 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Cadmium ug/L 03/01/00 -- -- 1 ND ND 7.00 ND 4.0 ND NC 2L = 2 ug/L ug/L 09/01/00 -- -- 1 ND ND 11 ND 5.0 ND EPA MCL = 5 ug/L ug/L 03/01/01 -- -- 1 ND ND 3.4 ND 8.0 ND ug/L 09/01/01 -- -- 1 ND ND 5.0 1.6 5.5 ND ug/L 03/01/02 -- -- 1 ND 1.0 5.5 1.4 7.5 ND ug/L 09/01/02 -- -- 1 ND ND 5.5 ND 1.8 ND ug/L 04/01/03 -- -- 1 ND ND ND ND ND ND ug/L 10/01/03 -- -- 1 ND ND 7.6 1.7 4.5 ND ug/L 03/01/04 -- -- 1 ND 1.5 1.9 2.2 3.0 ND ug/L 09/01/04 -- -- 1 ND ND 1.1 ND ND ND ug/L 05/01/05 -- -- 1 ND ND ND ND ND ND ug/L 10/01/05 -- -- 1 ND ND ND ND ND ND ug/L 04/01/06 -- -- 1 4.3 ND ND ND ND ND ug/L 10/01/06 -- -- 1 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/02/08 0.5 -- 1 ND ND ND ND ND ND ug/L 12/05/08 0.36 -- 1 ND ND ND ND ND ND ug/L 04/16/09 0.09 -- 1 ND 0.35 B 0.53 B 0.23 B 1.2 B -- ug/L 10/07/09 0.36 -- 1 ND ND 0.422 1 ND 0.914 1 ND ug/L 04/28/10 0.36 -- 1 ND ND ND ND 0.649 1 ND ug/L 10/11/10 0.36 -- 1 ND ND ND ND 0.638 1 ND ug/L 05/10/11 0.36 -- 1 ND ND ND ND ND ND ug/L 10/06/11 0.36 -- 1 ND ND ND ND ND ND ug/L 04/16/12 0.36 -- 1 ND ND ND ND ND ND ug/L 10/24/12 0.36 -- 1 ND ND ND ND 0.494 1 ND ug/L 04/24/13 0.36 -- 1 ND ND ND ND ND ND ug/L 09/10/13 0.36 -- 1 ND ND ND ND ND ND ug/L 04/22/14 0.36 -- 1 ND ND ND ND ND ND ug/L 10/06/14 0.36 -- 1 ND ND ND ND ND ND ug/L 04/07/15 0.36 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.36 -- 1 ND ND ND ND ND ND ug/L 04/26/16 0.36 -- 1 ND ND ND ND ND ND ug/L 09/28/16 0.36 -- 1 ND ND ND ND 0.427 1 ND ug/L 04/27/17 0.36 -- 1 ND ND ND ND 0.409 1 ND ug/L 10/17/17 0.36 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.36 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.36 1.00 -- ND ND ND ND ND ND ug/L 04/08/19 0.36 1.00 -- ND ND ND ND ND ND ug/L 10/09/19 0.36 1.00 -- ND ND ND ND ND ND ug/L 04/20/20 0.36 1.00 -- ND ND ND ND 1.29 ND ug/L 10/13/20 0.36 1.00 -- ND ND ND ND ND ND ug/L 04/29/21 0.36 1.00 -- ND ND ND ND ND ND ug/L 10/12/21 0.36 1.00 -- ND ND ND ND ND ND u /L 04/21/22 0.36 1.00 -- ND ND ND ND ND ND Chromium ug/L 03/01/00 -- -- 10 ND ND 28 12 ND ND NC 2L = 10 ug/L ug/L 09/01/00 -- -- 10 ND ND 40 ND ND ND EPA MCL = 100 ug/L ug/L 03/01/01 -- -- 10 ND ND 14 ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND 10 14 ND ug/L 03/01/02 -- -- 10 ND ND ND ND 11 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 12 12 10 ND ug/L 03/01/04 -- -- 10 ND ND 11 12 12 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 18 ND 90 ND ug/L 04/01/06 -- -- 10 ND ND 25.7 ND 13.2 ND ug/L 10/01/06 -- -- 10 ND ND ND ND 66 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 05/02/08 2 -- 10 ND ND 25.2 ND 91.5 ND ug/L 12/05/08 1 -- 10 ND ND ND ND ND ND ug/L 04/16/09 0.7 -- 10 -- 3.4 1 44.2 12.8 52.5 ND ug/L 10/07/09 1 -- 10 ND ND 20.1 10.4 52.9 ND ug/L 04/28/10 1 -- 10 ND 1.52 1 6.17 1 4.75 1 37.4 ND ug/L 10/11/10 1 -- 10 ND ND 11.2 3.40 1 71.4 ND ug/L 05/10/11 1 -- 10 ND 5.13 1 73.8 15.1 109 ND ug/L 10/06/11 1 -- 10 1.27 1 2.33 1 12.8 9.49 1 36.4 ND ug/L 04/16/12 1 -- 10 ND 5.39 1 19.6 14.1 64.0 ND ug/L 10/24/12 1 -- 10 ND 2.34 1 42.2 8.00 1 51.6 ND ug/L 04/24/13 1.4 -- 10 1.74 1 ND 21.8 2.79 1 39.3 ND ug/L 09/10/13 1.4 -- 10 ND ND 2.06 1 5.05 1 6.3 1 ND ug/L 04/22/14 1.4 -- 10 ND 2.52 1 8.14 1 5.49 1 12.2 ND ug/L 10/06/14 1.4 -- 10 ND 2.59 1 12.8 6.34 1 5.58 1 ND ug/L 04/07/15 1.4 -- 10 ND 3.97 1 20.0 9.33 1 9.31 1 ND ug/L 10/07/15 1.4 -- 10 ND 2.66 1 29.9 7.78 1 4.61 1 ND ug/L 04/26/16 1.4 -- 10 ND ND 3.57 1 1.56 1 2.83 1 ND ug/L 09/28/16 1.4 -- 10 ND ND 2.98 1 ND ND ND ug/L 04/27/17 1.4 -- 10 ND ND 7.43 1 1.52 1 2.45 1 ND ug/L 10/17/17 1.4 -- 10 ND 3.94 1 5.66 1 4.38 1 2.36 1 ND ug/L 04/16/18 1.4 -- 10 ND 1.76 1 12.6 3.90 1 2.70 1 ND ug/L 10/18/18 1.4 10 -- ND 2.48 1 5.02 1 5.34 1 2.87 1 ND ug/L 04/08/19 1.4 10 -- ND 2.40 1 6.88 1 3.39 1 1.94 1 ND ug/L 10/09/19 1.4 10 -- ND 1.83 1 ND 3.98 1 ND ND ug/L 04/20/20 1.4 10 -- ND 1.70 1 ND 1.66 1 1.49 1 ND ug/L 10/13/20 1.4 10 -- 2.51 1 4.94 1 3.37 1 7.27 1 3.33 1 ND ug/L 04/29/21 1.4 10 -- ND 2.55 1 3.22 1 2.58 1 ND ND ug/L 10/12/21 1.4 10 -- ND 3.72 1 3.21 1 5.46 1 2.88 1 ND u /L 04/21 /22 1.4 10 -- ND 2.52 1 2.32 1 2.12 1 ND ND G 0 L 0 E P 2 of 12 August 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Lead ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND NC 2L = 15 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND EPA MCL = 15 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 26 ND 16 ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND 62 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 11.7 ND ug/L 04/10/07 -- -- -- 2.0 2.0 6.7 J 2.0 2.9 ND ug/L 09/25/07 -- -- -- 2.0 ND 3.6 J ND ND ND ug/L 05/02/08 2.0 -- 10 ND ND 5.6 J ND 17.6 ND ug/L 12/05/08 1.9 -- 10 ND ND ND ND ND ND ug/L 04/16/09 1.6 -- 10 -- 4.1 J 12.4 3.7 J 19 ND ug/L 10/07/09 1.9 -- 10 ND ND 3.31 J 2.44 J 14 ND ug/L 04/28/10 1.9 -- 10 ND ND ND ND 7.98 J ND ug/L 10/11/10 1.9 -- 10 ND ND 2.01 J ND 16.4 ND ug/L 05/10/11 1.9 -- 10 ND ND 11.3 2.85 J 34.3 ND ug/L 10/06/11 1.9 -- 10 ND ND ND ND 8.6 J ND ug/L 04/16/12 1.9 -- 10 ND 1.9 3.15 J 1.9 15.8 ND ug/L 10/24/12 1.9 -- 10 ND 2.3 J 11.2 2.79 J 18.7 ND ug/L 04/24/13 1.9 -- 10 ND ND ND ND 9.79 J ND ug/L 09/10/13 2.1 -- 10 ND ND ND ND 4.72 J ND ug/L 04/22/14 2.1 -- 10 ND 3.12 J 4.62 J ND 8.23 J ND ug/L 10/06/14 2.1 -- 10 ND ND ND ND ND ND ug/L 04/07/15 3.1 -- 10 ND ND ND ND ND ND ug/L 10/07/15 3.1 -- 10 ND 3.7 J 4.3 J ND 3.7 J ND ug/L 04/26/16 3.1 -- 10 ND ND ND ND ND ND ug/L 09/28/16 3.1 -- 10 ND ND 4.94 J ND 3.56 J ND ug/L 04/27/17 3.1 -- 10 ND ND ND ND ND ND ug/L 10/17/17 3.1 -- 10 ND ND ND ND ND ND ug/L 04/16/18 3.1 -- 10 ND ND ND ND ND ND ug/L 10/18/18 3.1 10 -- ND ND ND ND ND ND ug/L 04/08/19 3.1 10 -- ND ND ND ND ND ND ug/L 10/09/19 3.1 10 -- ND ND ND 3.28 J ND ND ug/L 04/20/20 3.1 10 -- ND 3.62 J ND ND ND ND ug/L 10/13/20 3.1 10 -- ND ND 4.17 J ND 5.07 J ND ug/L 04/29/21 3.1 10 -- ND ND 4.94 J ND 7.88 J ND ug/L 10/12/21 3.1 10 -- ND ND ND ND ND ND u /L 04/21/22 3.1 10 -- ND ND ND ND ND ND Mercury ug/L 03/01/00 -- -- 0.5 ND ND ND ND ND ND NC 2L = 1 ug/L ug/L 09/01/00 -- -- 0.5 ND ND ND ND ND ND EPA MCL = 2 ug/L ug/L 03/01/01 -- -- 0.5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 0.5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 0.5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 0.5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 0.5 ND 2.4 ND ND ND ND ug/L 10/01/03 -- -- 0.5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 0.5 ND 2.4 ND ND ND ND ug/L 09/01/04 -- -- 0.5 ND 0.9 ND ND ND ND ug/L 05/01/05 -- -- 0.5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 0.5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 0.5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 0.5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- -- 0.14 J ND ND ND ND ug/L 09/25/07 -- -- -- 0.11 3.96 ND ND ND ND ug/L 05/02/08 0.11 -- 0.2 ND 0.45 ND ND ND ND ug/L 12/05/08 0.11 -- 0.2 ND ND ND ND ND ND ug/L 04/16/09 0.11 -- 0.2 -- 0.34 ND ND ND ND ug/L 10/07/09 0.054 -- 0.2 ND 0.0867 J ND ND 0.0638 J ND ug/L 04/28/10 0.17 -- 0.2 ND ND ND ND ND ND ug/L 10/11/10 0.17 -- 0.2 ND ND ND ND ND ND ug/L 05/10/11 0.17 -- 0.2 ND ND ND ND ND ND ug/L 10/06/11 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/16/12 0.17 -- 0.2 ND 0.237 ND ND ND ND ug/L 10/24/12 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/24/13 0.17 -- 0.2 ND ND ND ND ND ND ug/L 09/10/13 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/22/14 0.17 -- 0.2 ND ND ND ND ND ND ug/L 10/06/14 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/07/15 0.17 -- 0.2 ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/26/16 0.17 -- 0.2 ND ND ND ND ND ND ug/L 09/28/16 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/27/17 0.17 -- 0.2 ND 0.174 J ND ND ND ND ug/L 10/17/17 0.17 -- 0.2 ND 0.667 ND ND ND ND ug/L 04/16/18 0.17 -- 0.2 ND 0.283 ND ND ND ND ug/L 10/18/18 0.15 0.20 -- ND ND ND ND ND ND ug/L 04/08/19 0.15 0.20 -- ND ND ND ND ND ND ug/L 10/09/19 0.15 0.20 -- ND ND ND ND ND ND ug/L 04/20/20 0.15 0.20 -- ND ND ND ND ND ND ug/L 10/13/20 0.15 0.20 -- ND ND ND ND ND ND ug/L 04/29/21 0.15 0.20 -- ND ND ND ND ND ND ug/L 10/12/21 0.15 0.20 -- ND ND ND ND ND ND u /L 04/21/22 0.15 0.20 -- ND ND ND ND ND ND 1, D ER 3 of 12 August 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Detected Monitoring Reporting Sample Method Practical SWS Upgradient Well Downgradient Wells Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Selenium ug/L 03/01/00 -- -- 20 ND ND ND ND ND ND NC 2L = 20 ug/L ug/L 09/01/00 -- -- 20 ND ND ND ND ND ND EPA MCL = 50 ug/L ug/L 03/01/01 -- -- 20 ND ND ND ND ND ND ug/L 09/01/01 -- -- 20 ND ND ND ND ND ND ug/L 03/01/02 -- -- 20 ND ND ND ND ND ND ug/L 09/01/02 -- -- 20 ND ND ND ND ND ND ug/L 04/01/03 -- -- 20 ND ND ND ND ND ND ug/L 10/01/03 -- -- 20 ND ND ND ND ND ND ug/L 03/01/04 -- -- 20 ND ND ND ND ND ND ug/L 09/01/04 -- -- 20 ND ND ND ND ND ND ug/L 05/01/05 -- -- 20 ND ND ND ND ND ND ug/L 10/01/05 -- -- 20 ND ND ND ND ND ND ug/L 04/01/06 -- -- 20 ND ND ND ND ND ND ug/L 10/01/06 -- -- 20 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/02/08 2.0 -- 10 ND ND ND ND ND ND ug/L 12/05/08 2.7 -- 10 ND ND ND ND ND ND ug/L 04/16/09 3.4 -- 10 -- ND ND ND ND ND ug/L 10/07/09 2.7 -- 10 ND ND ND ND ND ND ug/L 04/28/10 0.83 -- 10 ND ND ND ND ND ND ug/L 10/11/10 2.7 -- 10 1.31 1 2.7 2.7 2.7 5.55 1 ND ug/L 05/10/11 0.83 -- 10 1.07 1 ND ND ND ND ND ug/L 10/06/11 2.7 -- 10 ND ND ND ND ND ND ug/L 04/16/12 2.7 -- 10 ND ND ND ND ND ND ug/L 10/24/12 4.5 -- 10 ND ND ND ND ND ND ug/L 04/24/13 4.5 -- 10 ND ND ND ND ND ND ug/L 09/10/13 5.0 -- 10 ND ND ND ND ND ND ug/L 04/22/14 5.0 -- 10 ND ND ND ND ND ND ug/L 10/06/14 5.0 -- 10 ND ND ND ND ND ND ug/L 04/07/15 5.0 -- 10 ND ND ND ND ND ND ug/L 10/07/15 5.0 -- 10 ND ND ND ND ND ND ug/L 04/26/16 6.2 -- 10 ND ND ND ND ND ND ug/L 09/28/16 6.2 -- 10 ND ND ND ND ND ND ug/L 04/27/17 6.2 -- 10 ND ND ND ND ND ND ug/L 10/17/17 6.2 -- 10 ND ND ND ND ND ND ug/L 04/16/18 6.2 -- 10 ND ND ND ND ND ND ug/L 10/18/18 6.2 10 -- ND ND ND ND ND ND ug/L 04/08/19 6.2 10 -- ND ND ND ND ND ND ug/L 10/09/19 6.2 10 -- ND ND ND ND ND ND ug/L 04/20/20 6.2 10 -- ND ND ND ND ND ND ug/L 10/13/20 6.2 10 -- ND ND ND ND ND ND ug/L 04/29/21 6.2 10 -- ND ND ND ND ND ND ug/L 10/12/21 6.2 10 -- ND ND ND ND ND ND u /L 04/21/22 6.2 10 -- ND ND ND ND ND ND Silver ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND NC 2L = 20 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND EPA MCL = 100 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 05/02/08 2.0 -- 10 ND ND ND ND ND ND ug/L 12/05/08 1.9 -- 10 ND ND ND ND ND ND ug/L 04/16/09 1.0 -- 10 -- 5.2 1 2.1 1 5 1 ND ND ug/L 10/07/09 1.9 -- 10 ND 2.34 1 3.35 1 3.53 1 2.44 1 ND ug/L 04/28/10 1.9 -- 10 ND 5.16 1 6.91 1 5.57 1 2.93 1 ND ug/L 10/11/10 1.9 -- 10 ND 2 1 ND 3.56 1 ND ND ug/L 05/10/11 1.9 -- 10 ND 2.04 1 ND 3.07 1 3.11 1 ND ug/L 10/06/11 1.9 -- 10 ND ND ND 1.92 1 1.9 1 ND ug/L 04/16/12 1.9 -- 10 ND 3.7 1 4.39 1 4.54 1 5.39 1 ND ug/L 10/24/12 1.9 -- 10 ND ND 2.94 1 ND 3.8 1 ND ug/L 04/24/13 1.9 -- 10 ND 4.22 1 2.96 1 4.42 1 ND ND ug/L 09/10/13 1.9 -- 10 ND ND 2.16 1 2.59 1 2.62 1 ND ug/L 04/22/14 1.9 -- 10 ND ND ND ND ND ND ug/L 10/06/14 1.9 -- 10 ND ND ND ND ND ND ug/L 04/07/15 1.9 -- 10 ND 2.16 1 2.18 1 ND ND ND ug/L 10/07/15 1.9 -- 10 2.79 1 ND ND ND ND ND ug/L 04/26/16 1.9 -- 10 ND ND ND ND ND ND ug/L 09/28/16 1.9 -- 10 ND ND ND ND ND ND ug/L 04/27/17 1.9 -- 10 ND 2.04 1 ND 2.66 1 ND ND ug/L 10/17/17 1.9 -- 10 ND ND ND ND ND ND ug/L 04/16/18 1.9 -- 10 ND ND ND ND 2.23 1 ND ug/L 10/18/18 1.9 10 -- ND ND ND ND ND ND ug/L 04/08/19 1.9 10 -- ND ND ND ND ND ND ug/L 10/09/19 1.9 10 -- ND ND ND ND ND ND ug/L 04/20/20 1.9 10 -- ND ND ND ND ND ND ug/L 10/13/20 1.9 10 -- ND ND ND ND ND ND ug/L 04/29/21 1.9 10 -- ND 2.48 1 ND ND ND ND ug/L 10/12/21 1.9 10 -- ND ND ND ND ND ND ug/L 04/21/22 1.9 10 -- ND ND ND ND ND ND 4 of 12 August 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Acetone ug/L 03/01/00 -- -- 100 ND ND ND ND ND ND NC 2L = 6000 ug/L ug/L 09/01/00 -- -- 100 ND ND ND ND ND ND (No EPA MCL) ug/L 03/01/01 -- -- 100 ND ND ND ND ND ND ug/L 09/01/01 -- -- 100 ND ND ND ND ND ND ug/L 03/01/02 -- -- 100 ND ND ND ND ND ND ug/L 09/01/02 -- -- 100 ND ND ND ND ND ND ug/L 04/01/03 -- -- 100 ND ND ND ND ND ND ug/L 10/01/03 -- -- 100 ND ND ND ND ND ND ug/L 03/01/04 -- -- 100 ND ND ND ND ND ND ug/L 09/01/04 -- -- 100 ND ND ND ND ND ND ug/L 05/01/05 -- -- 100 ND ND ND ND ND ND ug/L 10/01/05 -- -- 100 ND ND ND ND ND ND ug/L 04/01/06 -- -- 100 ND ND ND ND ND ND ug/L 10/01/06 -- -- 100 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND 33 1 1.4 1 ND ug/L 09/25/07 -- -- -- 3.8 B 5.8 1 7.1 1 9.1 1 20 1 ND ug/L 05/02/08 0.62 -- 100 ND ND ND ND ND ND ug/L 12/05/08 1.5 -- 100 ND 0.37 6.4 1 5.6 1 6.1 1 ND ug/L 04/16/09 1.5 -- 100 -- 15 1 ND ND ND ND ug/L 10/07/09 2.8 -- 55 ND ND ND ND ND ND ug/L 10/14/09 1.5 -- 100 ND -- -- -- -- ND ug/L 04/28/10 1.5 -- 100 ND ND ND ND ND ND ug/L 10/11/10 1.5 -- 100 ND ND ND ND ND ND ug/L 05/10/11 1.2 -- 100 ND ND ND ND 4.1 1 ND ug/L 10/06/11 1.2 -- 100 ND ND ND ND 5.7 1 ND ug/L 04/16/12 1.2 -- 100 ND 3.8 1 ND ND ND ND ug/L 10/24/12 1.2 -- 100 ND 12 1 ND ND 12 1 ND ug/L 04/24/13 0.96 -- 100 ND ND ND ND ND ND ug/L 09/10/13 1.2 -- 100 ND ND ND ND 8.6 1 ND ug/L 04/22/14 1.2 -- 100 ND ND ND ND ND ND ug/L 10/06/14 1.2 -- 100 ND ND ND ND ND ND ug/L 04/07/15 1.2 -- 100 ND ND ND ND 3.6 1 ND ug/L 10/07/15 1.2 -- 100 ND ND ND ND ND ND ug/L 04/26/16 1.2 -- 100 ND ND ND ND ND ND ug/L 09/28/16 10 -- 100 ND ND ND ND ND ND ug/L 04/27/17 10 -- 100 16 B 20 B 32 B 19 B 31 B 20 1 ug/L 10/17/17 10 -- 100 ND ND ND ND ND ND ug/L 04/16/18 10 -- 100 ND ND ND ND 14 1 ND ug/L 10/18/18 10 20 -- ND ND ND ND ND ND ug/L 04/08/19 10 20 -- ND ND ND ND 13 1 ND ug/L 10/09/19 10 20 -- ND ND ND ND ND ND ug/L 04/20/20 10 20 -- ND ND ND ND ND ND ug/L 10/13/20 10 20 -- ND ND ND ND ND ND ug/L 04/29/21 10 20 -- ND ND ND ND 15 1 ND ug/L 10/12/21 10 20 -- ND ND ND ND ND 26 ug/L 04/21/22 10 20 -- ND ND ND ND ND ND Benzene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 1 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND EPA MCL = 5 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND 1.3 ND 0.5 1 0.5 1 ND ug/L 05/02/08 0.2 -- 1 ND 1.7 ND ND 0.43 1 ND ug/L 12/05/08 0.2 -- 1 ND 162 ND 0.51 1 ND ND ug/L 04/16/09 0.2 -- 1 -- ND ND ND ND ND ug/L 10/07/09 0.2 -- 1 ND 1.6 ND 0.51 1 ND ND ug/L 04/28/10 0.05 -- 1 ND 1.7 ND ND ND ND ug/L 10/11/10 0.2 -- 1 ND 1.5 ND 0.49 1 ND ND ug/L 05/10/11 0.68 -- 1 ND 2.7 ND ND ND ND ug/L 10/06/11 0.68 -- 1 ND 1.8 ND ND ND ND ug/L 04/16/12 0.15 -- 1 ND 2.8 ND ND ND ND ug/L 10/24/12 0.15 -- 1 ND 2.2 0.15 0.44 1 0.15 ND ug/L 04/24/13 0.25 -- 1 ND 3.5 ND 0.34 1 ND ND ug/L 09/10/13 0.15 -- 1 ND 3.0 ND ND ND ND ug/L 04/22/14 0.15 -- 1 ND 3.5 ND ND ND ND ug/L 10/06/14 0.15 -- 1 ND 3.9 0.54 1 ND ND ND ug/L 04/07/15 0.15 -- 1 ND 3.7 ND ND ND ND ug/L 10/07/15 0.15 -- 1 ND 3.3 ND 0.58 1 ND ND ug/L 04/26/16 0.15 -- 1 ND 3.9 ND ND ND ND ug/L 09/28/16 0.15 -- 1 ND 4.3 ND 0.52 1 ND ND ug/L 04/27/17 0.15 -- 1 ND 5.4 ND ND ND ND ug/L 10/17/17 0.15 -- 1 ND 4.4 ND ND ND ND ug/L 04/16/18 0.15 -- 1 ND 5.0 ND ND ND ND ug/L 10/18/18 0.15 1.0 -- ND 2.9 ND ND ND ND ug/L 04/08/19 0.15 1.0 -- ND 5.6 ND ND ND ND ug/L 10/09/19 0.15 1.0 -- ND 4.8 ND ND ND ND ug/L 04/20/20 0.15 1.0 -- ND 5.0 ND ND ND ND ug/L 10/13/20 0.15 1.0 -- ND 4.8 ND ND ND ND ug/L 04/29/21 0.15 1.0 -- ND 7.8 ND ND ND ND ug/L 10/12/21 0.15 1.0 -- ND 4.8 ND ND ND ND ug/L 04/21/22 0.15 1.0 -- ND 5.8 ND ND ND ND 1,DEP 5 of 12 August 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Bromoform ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- NC 2L = 4 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- EPA MCL = 80 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ug/L 04/01/03 -- -- 5 ND ND ND ND ND -- ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ug/L 04/01/06 -- -- 5 ND ND ND ND ND -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ug/L 04/10/07 -- -- -- ND ND ND ND ND -- ug/L 09/25/07 -- -- -- ND ND ND ND ND -- ug/L 05/02/08 0.29 -- 3 ND ND ND ND ND -- ug/L 12/05/08 0.71 -- 3 ND 7.1 J ND ND ND -- ug/L 04/16/09 0.71 -- 3 -- ND ND ND ND -- ug/L 10/07/09 0.71 -- 3 ND ND ND ND ND -- ug/L 04/28/10 0.2 -- 3 ND ND ND ND ND ND ug/L 10/11/10 0.71 -- 3 ND ND ND ND ND ND ug/L 05/10/11 0.68 -- 3 ND -- -- -- -- ND ug/L 10/06/11 0.68 -- 3 ND ND ND ND ND ND ug/L 04/16/12 0.22 -- 3 ND ND ND ND ND ND ug/L 10/24/12 0.22 -- 3 ND ND ND ND ND ND ug/L 04/24/13 0.33 -- 3 ND ND ND ND ND ND ug/L 09/10/13 0.22 -- 3 ND ND ND ND ND ND ug/L 04/22/14 0.22 -- 3 ND ND ND ND ND ND ug/L 10/06/14 0.22 -- 3 ND ND ND ND ND ND ug/L 04/07/15 0.22 -- 3 ND ND ND ND ND -- ug/L 10/07/15 0.22 -- 3 ND ND ND ND ND -- ug/L 04/26/16 0.22 -- 3 ND ND ND ND ND -- ug/L 09/28/16 0.22 -- 3 ND ND ND ND ND -- ug/L 04/27/17 0.22 -- 3 ND ND ND ND ND ND ug/L 10/17/17 0.22 -- 3 ND ND ND ND ND ND ug/L 04/16/18 0.22 -- 3 ND ND ND ND ND ND ug/L 10/18/18 0.22 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.22 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 0.22 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.22 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.22 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.22 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.22 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.22 1.0 -- ND ND ND ND ND ND Carbon Tetrachloride ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- NC 2L = 0.3 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- EPA MCL = 5 ug/L ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ug/L 04/01/03 -- -- 10 ND ND ND ND ND -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ug/L 04/01/06 -- -- 10 ND ND ND ND ND -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ug/L 04/10/07 -- -- -- ND ND ND ND ND -- ug/L 09/25/07 -- -- -- ND ND ND ND ND -- ug/L 05/02/08 0.35 -- 1 ND ND ND ND ND -- ug/L 12/05/08 0.38 -- 1 ND ND ND ND ND -- ug/L 04/16/09 0.38 -- 1 -- ND ND ND ND -- ug/L 10/07/09 0.38 -- 1 ND ND ND ND ND -- ug/L 04/28/10 0.082 -- 1 ND ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 ND ND ND ND ND ND ug/L 05/10/11 0.69 -- 1 ND ND ND ND ND ND ug/L 10/06/11 0.69 -- 1 ND ND ND ND ND ND ug/L 04/16/12 0.17 -- 1 ND ND ND ND ND ND ug/L 10/24/12 0.17 -- 1 ND ND ND ND ND ND ug/L 04/24/13 0.34 -- 1 ND ND ND ND ND ND ug/L 09/10/13 0.17 -- 1 ND ND 0.17 ND ND ND ug/L 04/22/14 0.17 -- 1 ND ND ND ND ND ND ug/L 10/06/14 0.17 -- 1 ND ND ND ND ND ND ug/L 04/07/15 0.17 -- 1 ND ND ND ND ND -- ug/L 10/07/15 0.17 -- 1 ND ND ND ND ND -- ug/L 04/26/16 0.17 -- 1 ND ND ND ND ND -- ug/L 09/28/16 0.17 -- 1 ND ND ND ND ND -- ug/L 04/27/17 0.17 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.17 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.17 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 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 10/13/20 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.17 1.0 -- ND ND ND ND ND ND LER 6 of 12 August 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Chlorobenzene ug/L 03/01/00 -- -- 5 ND ND ND ND 5.4 ND NC 2L = 50 ug/L ug/L 09/01/00 -- -- 5 ND ND ND 6.2 6.7 ND EPA MCL = 100 ug/L ug/L 03/01/01 -- -- 5 ND ND ND 6.7 8.2 ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND 7.5 ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND 6.7 ND ug/L 10/01/03 -- -- 5 ND ND ND 8.3 10 ND ug/L 03/01/04 -- -- 5 ND ND ND 7.7 9.8 ND ug/L 09/01/04 -- -- 5 ND ND ND 11 ND ND ug/L 05/01/05 -- -- 5 ND ND ND 8 9 ND ug/L 10/01/05 -- -- 5 ND ND 5 14 5 ND ug/L 04/01/06 -- -- 5 ND ND ND 9.6 9.8 ND ug/L 10/01/06 -- -- 5 ND ND 5.6 13 12 ND ug/L 04/10/07 -- -- -- 0.16 0.16 0.16 0.16 11 ND ug/L 09/25/07 -- -- -- 0.16 2.0 1 4.2 ND ND ND ug/L 05/02/08 0.27 -- 3 ND 4.6 5.8 9.8 9.4 ND ug/L 12/05/08 0.27 -- 3 ND 0.38 1.8 1 12 5.6 ND ug/L 04/16/09 0.27 -- 3 -- 7.2 4.3 6.7 6.1 ND ug/L 10/07/09 0.27 -- 3 ND 3.3 6.2 15 5.6 ND ug/L 04/28/10 0.069 -- 3 ND 3.9 6.2 12 5.5 ND ug/L 10/11/10 0.27 -- 3 ND 3.2 6.4 16 3.9 ND ug/L 05/10/11 0.74 -- 3 ND 6.3 1.4 1 9.3 5.6 ND ug/L 10/06/11 0.74 -- 3 ND 5.1 3.4 15 7.8 ND ug/L 04/16/12 0.17 -- 3 ND 7.3 4.7 7.4 4.2 ND ug/L 10/24/12 0.17 -- 3 ND 5.8 3 15 7.4 ND ug/L 04/24/13 0.26 -- 3 ND 8.1 1.7 1 10 4.2 ND ug/L 09/10/13 0.17 -- 3 ND 7.6 5.4 12 7.7 ND ug/L 04/22/14 0.17 -- 3 ND 11 4.8 8.2 7.6 ND ug/L 10/06/14 0.17 -- 3 ND 9.8 8.1 9.5 9.3 ND ug/L 04/07/15 0.17 -- 3 ND 11 6.2 13 7.1 ND ug/L 10/07/15 0.17 -- 3 ND 7.2 8.0 18 0.67 1 ND ug/L 04/26/16 0.17 -- 3 ND 10 6.0 8.3 4.4 ND ug/L 09/28/16 0.17 -- 3 ND 11 8.7 17 3.9 ND ug/L 04/27/17 0.17 -- 3 ND 13 3.3 10 4.2 ND ug/L 10/17/17 0.17 -- 3 ND 12 7.6 16 2.9 1 ND ug/L 04/16/18 0.17 -- 3 ND 12 4.6 4.6 5.2 ND ug/L 10/18/18 0.17 1.0 -- ND 13 6.3 3.6 4.7 ND ug/L 04/08/19 0.17 1.0 -- ND 12 1.5 ND 5.4 ND ug/L 10/09/19 0.17 1.0 -- ND 14 6.5 12 2.9 ND ug/L 04/20/20 0.17 1.0 -- ND 12 2.0 ND 5.3 ND ug/L 10/13/20 0.17 1.0 -- ND 14 5.0 2.5 6.4 ND ug/L 04/29/21 0.17 1.0 -- ND 15 7.2 ND 6.4 ND ug/L 10/12/21 0.17 1.0 -- ND 16 7.5 12 4.4 ND u /L 04/21/22 0.17 1.0 -- ND 15 4.2 ND 5.8 ND Chloroethane ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- NC 2L = 3000 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- (No EPA MCL) ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ug/L 04/01/03 -- -- 10 ND ND ND ND ND -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ug/L 04/01/06 -- -- 10 ND ND ND ND ND -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ug/L 04/10/07 -- -- -- ND ND ND ND ND -- ug/L 09/25/07 -- -- -- ND ND ND ND ND -- ug/L 05/02/08 0.3 -- 10 ND ND ND ND ND -- ug/L 12/05/08 0.3 -- 10 ND 1.8 1 ND ND ND -- ug/L 04/16/09 0.3 -- 10 -- ND ND ND ND -- ug/L 10/07/09 0.3 -- 10 ND ND ND ND ND -- ug/L 04/28/10 0.18 -- 10 ND ND ND ND ND ND ug/L 10/11/10 0.3 -- 10 ND ND ND ND ND ND ug/L 05/10/11 0.75 -- 10 ND ND ND ND ND ND ug/L 10/06/11 0.75 -- 10 ND ND ND ND ND ND ug/L 04/16/12 0.23 -- 10 ND ND ND ND ND ND ug/L 10/24/12 0.23 -- 10 ND ND ND ND ND ND ug/L 04/24/13 0.53 -- 10 ND ND ND ND ND ND ug/L 09/10/13 0.23 -- 10 ND ND ND ND ND ND ug/L 04/22/14 0.23 -- 10 ND ND ND ND ND ND ug/L 10/06/14 0.23 -- 10 ND ND ND ND ND -- ug/L 04/07/15 0.23 -- 10 ND ND ND ND ND -- ug/L 10/07/15 0.23 -- 10 ND ND ND ND ND -- ug/L 04/26/16 0.23 -- 10 ND ND ND ND ND -- ug/L 09/28/16 0.23 -- 10 ND ND ND ND ND -- ug/L 04/27/17 0.23 -- 10 ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 10 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 10 ND ND ND ND ND ND ug/L 10/18/18 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 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 10/13/20 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.23 1.0 -- ND ND ND ND ND ND 7 of 12 August 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 1,2-Dichlorobenzene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 20 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND EPA MCL = 600 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 1.2 1 0.84 1 0.60 1 ND ug/L 09/25/07 -- -- -- ND ND 1.2 1 0.79 1 0.48 1 ND ug/L 05/02/08 0.27 -- 5 ND ND 1 1 0.49 1 ND ND ug/L 12/05/08 0.27 -- 5 ND 0.42 ND 0.75 1 ND ND ug/L 04/16/09 0.27 -- 5 -- ND 1.1 1 0.59 1 0.41 1 ND ug/L 10/07/09 0.27 -- 5 ND ND 1.5 1 0.85 1 ND ND ug/L 04/28/10 0.052 -- 5 ND ND 1.4 1 0.73 1 ND ND ug/L 10/11/10 0.27 -- 5 ND ND 1.3 1 0.88 1 ND ND ug/L 05/10/11 0.11 -- 5 ND ND ND ND ND ND ug/L 10/06/11 0.11 -- 5 ND ND 0.74 1 0.79 1 ND ND ug/L 04/16/12 0.19 -- 5 ND ND 0.78 1 0.45 1 ND ND ug/L 10/24/12 0.19 -- 5 ND ND 0.56 1 0.81 1 ND ND ug/L 04/24/13 0.39 -- 5 ND ND ND 0.59 1 ND ND ug/L 09/10/13 0.19 -- 5 ND ND 0.85 1 0.67 1 0.41 1 ND ug/L 04/22/14 0.19 -- 5 ND ND 0.92 1 0.55 1 ND ND ug/L 10/06/14 0.19 -- 5 ND ND 1.3 ND ND ND ug/L 04/07/15 0.19 -- 5 ND 0.41 1 1.3 1 0.7 1 ND ND ug/L 10/07/15 0.19 -- 5 ND ND 1.4 1 0.84 1 ND ND ug/L 04/26/16 0.19 -- 5 ND ND 1.1 1 0.44 1 ND ND ug/L 09/28/16 0.19 -- 5 ND ND 1.5 1 0.83 1 ND ND ug/L 04/27/17 0.19 -- 5 ND ND 0.94 1 0.56 1 ND ND ug/L 10/17/17 0.19 -- 5 ND ND 1.5 1 0.82 1 ND ND ug/L 04/16/18 0.19 -- 5 ND ND 1.5 1 ND ND ND ug/L 10/18/18 0.19 1.0 -- ND ND 1.7 ND ND ND ug/L 04/08/19 0.19 1.0 -- ND 0.43 1 ND ND ND ND ug/L 10/09/19 0.19 1.0 -- ND ND 1.0 0.58 1 ND ND ug/L 04/20/20 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.19 1.0 -- ND 0.43 1 0.89 1 ND ND ND ug/L 04/29/21 0.19 1.0 -- ND 0.48 1 1.2 ND ND ND ug/L 10/12/21 0.19 1.0 -- ND ND 1.5 ND ND ND u /L 04/21/22 0.19 1.0 -- ND ND ND ND ND ND 1,4-Dichlorobenzene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 6 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND EPA MCL = 75 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND 5.6 ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND 5.6 ND ug/L 05/01/05 -- -- 5 ND ND ND ND 5.0 ND ug/L 10/01/05 -- -- 5 ND 5.0 ND 6.0 ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND 5.0 ND ug/L 10/01/06 -- -- 5 ND ND ND ND 5.0 ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 0.15 3.5 1.4 4.1 5.4 ND ug/L 05/02/08 0.20 -- 1 ND 4.6 1.7 3.8 5.1 ND ug/L 12/05/08 0.38 -- 1 ND 0.27 1.8 4.0 3.5 ND ug/L 04/16/09 0.38 -- 1 -- 5.1 1.4 2.9 4.6 ND ug/L 10/07/09 0.38 -- 1 ND ND ND 4.6 4.1 ND ug/L 04/28/10 0.1 -- 1 ND 4.2 1.6 4.1 3.8 ND ug/L 10/11/10 0.38 -- 1 ND 3.9 1.6 4.5 2.3 ND ug/L 05/10/11 0.79 -- 1 ND 3.4 ND ND ND ND ug/L 10/06/11 0.79 -- 1 ND 3.6 ND 3.9 3.7 ND ug/L 04/16/12 0.19 -- 1 ND 3.6 1.0 2.3 2.5 ND ug/L 10/24/12 0.19 -- 1 ND 3.1 1.4 3.9 3.2 ND ug/L 04/24/13 0.14 -- 1 ND ND 0.82 1 2.9 2.4 ND ug/L 09/10/13 0.19 -- 1 ND 3.6 ND 3.1 3.9 ND ug/L 04/22/14 0.19 -- 1 ND 5.1 1.0 2.7 4.6 ND ug/L 10/06/14 0.19 -- 1 ND 4.9 1.6 2.2 5.0 ND ug/L 04/07/15 0.19 -- 1 ND 5.3 1.2 3.5 3.4 ND ug/L 10/07/15 0.19 -- 1 ND 3.6 1.7 4.7 0.53 1 ND ug/L 04/26/16 0.19 -- 1 ND 4.7 1.3 2.4 2.4 ND ug/L 09/28/16 0.19 -- 1 ND 4.7 1.6 4.2 2.7 ND ug/L 04/27/17 0.19 -- 1 ND 6.1 ND 3.0 3.2 ND ug/L 10/17/17 0.19 -- 1 ND 5.5 2.1 4.5 3.8 ND ug/L 04/16/18 0.19 -- 1 ND 5.8 1.7 1.9 3.5 ND ug/L 10/18/18 0.19 1.0 -- ND 6.4 ND 2.2 4.4 ND ug/L 04/08/19 0.19 1.0 -- ND 6.0 0.94 1 0.71 1 3.1 ND ug/L 10/09/19 0.19 1.0 -- ND 5.8 ND 3.1 2.3 ND ug/L 04/20/20 0.19 1.0 -- ND 5.2 0.93 1 0.54 1 3.0 ND ug/L 10/13/20 0.19 1.0 -- ND 6.6 2.1 1.3 4.4 ND ug/L 04/29/21 0.19 1.0 -- ND 7.6 2.0 ND 3.8 ND ug/L 10/12/21 0.19 1.0 -- ND 6.7 1.8 3.2 ND ND ug/L 04/21/22 0.19 1.0 -- ND 7.0 ND ND 2.9 ND 8 of 12 August 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 1,1-Dichloroethane ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 6 ug/L ug/L 09/01/00 -- -- 5 ND ND ND 5.8 ND ND (No EPA MCL) ug/L 03/01/01 -- -- 5 ND ND ND 5.0 ND ND ug/L 09/01/01 -- -- 5 ND ND ND 5.6 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 5.0 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 1.3 J ND 1.6 J ND ND ug/L 09/25/07 -- -- -- ND 1.7 J ND 2.9 J ND ND ug/L 05/02/08 0.33 -- 5 ND 1.3 J ND 2.0 J ND ND ug/L 12/05/08 0.33 -- 5 ND 0.54 ND 3.2 J ND ND ug/L 04/16/09 0.33 -- 5 -- 1.0 J ND 1.4 J ND ND ug/L 10/07/09 0.33 -- 5 ND 1.4 J ND 2.6 J ND ND ug/L 04/28/10 0.05 -- 5 ND 1.2 J ND 2.0 J ND ND ug/L 10/11/10 0.33 -- 5 ND 1.4 J ND 2.6 J ND ND ug/L 05/10/11 0.08 -- 5 ND 0.97 J 0.08 2.0 J ND ND ug/L 10/06/11 0.08 -- 5 ND 1.2 J ND 2.3 J ND ND ug/L 04/16/12 0.13 -- 5 ND 1.0 J ND 1.5 J ND ND ug/L 10/24/12 0.13 -- 5 ND 0.72 J ND 2.3 J ND ND ug/L 04/24/13 0.28 -- 5 ND 0.71 J ND 1.9 J ND ND ug/L 09/10/13 0.13 -- 5 ND 0.67 J 0.13 2.2 J ND ND ug/L 04/22/14 0.13 -- 5 ND 0.56 J ND 1.2 J ND ND ug/L 10/06/14 0.13 -- 5 ND 0.74 J ND 1.5 ND ND ug/L 04/07/15 0.13 -- 5 ND ND ND 1.5 J ND ND ug/L 10/07/15 0.13 -- 5 ND 1.0 J ND 3.2 J ND ND ug/L 04/26/16 0.13 -- 5 ND 0.45 J ND 2.0 J ND ND ug/L 09/28/16 0.13 -- 5 ND 0.86 J ND 2.9 J ND ND ug/L 04/27/17 0.13 -- 5 ND 0.47 J ND 1.6 J ND ND ug/L 10/17/17 0.13 -- 5 ND 0.52 J ND 2.6 J ND ND ug/L 04/16/18 0.13 -- 5 ND 0.50 J ND 1.3 J ND ND ug/L 10/18/18 0.13 1.0 -- ND 0.51 J ND 1.8 ND ND ug/L 04/08/19 0.13 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 0.13 1.0 -- ND 0.41 J ND 2.2 ND ND ug/L 04/20/20 0.13 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.13 1.0 -- ND 0.56 J ND 1.5 ND ND ug/L 04/29/21 0.13 1.0 -- ND 0.68 J ND ND ND ND ug/L 10/12/21 0.13 1.0 -- ND ND ND 2.3 ND ND u /L 04/21/22 0.13 1.0 -- ND ND ND ND ND ND 1,2-Dichloroethane ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- NC 2L = 0.4 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- EPA MCL = 5 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ug/L 04/01/03 -- -- 5 ND ND ND ND ND -- ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ug/L 04/01/06 -- -- 5 ND ND ND ND ND -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ug/L 04/10/07 -- -- -- ND ND ND ND ND -- ug/L 09/25/07 -- -- -- ND ND ND ND ND -- ug/L 05/02/08 0.46 -- 1 ND ND ND ND ND -- ug/L 12/05/08 0.65 -- 1 ND 1.6 J ND ND ND -- ug/L 04/16/09 0.65 -- 1 -- ND ND ND ND -- ug/L 10/07/09 0.65 -- 1 ND ND ND ND ND -- ug/L 04/28/10 0.082 -- 1 ND ND ND ND ND ND ug/L 10/11/10 0.65 -- 1 ND ND ND ND ND ND ug/L 05/10/11 0.47 -- 1 ND ND ND ND ND ND ug/L 10/06/11 0.47 -- 1 ND ND ND ND ND ND ug/L 04/16/12 0.21 -- 1 ND ND ND ND ND ND ug/L 10/24/12 0.21 -- 1 ND ND ND ND ND ND ug/L 04/24/13 0.24 -- 1 ND ND ND ND ND ND ug/L 09/10/13 0.21 -- 1 ND ND ND ND ND ND ug/L 04/22/14 0.21 -- 1 ND ND ND ND ND ND ug/L 10/06/14 0.21 -- 1 ND ND ND ND ND -- ug/L 04/07/15 0.21 -- 1 ND ND ND ND ND -- ug/L 10/07/15 0.21 -- 1 ND ND ND ND ND -- ug/L 04/26/16 0.21 -- 1 ND ND ND ND ND -- ug/L 09/28/16 0.21 -- 1 ND ND ND ND ND -- ug/L 04/27/17 0.21 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.21 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.21 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.21 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.21 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 0.21 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.21 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.21 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.21 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.21 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.21 1.0 -- ND ND ND ND ND ND LER 9 of 12 August 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 1,1-Dichloroethene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 7 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND EPA MCL = 7 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND 0.45 J ND ND ug/L 05/02/08 0.2 -- 5 ND ND ND ND ND ND ug/L 12/05/08 0.24 -- 5 ND 0.65 ND 0.56 J ND ND ug/L 04/16/09 0.24 -- 5 -- ND ND ND ND ND ug/L 10/07/09 0.24 -- 5 ND ND ND 0.46 J ND ND ug/L 04/28/10 0.15 -- 5 ND ND ND ND ND ND ug/L 10/11/10 0.24 -- 5 ND ND ND 0.48 J ND ND ug/L 05/10/11 0.6 -- 5 ND ND ND ND ND ND ug/L 10/06/11 0.6 -- 5 ND ND ND ND ND ND ug/L 04/16/12 0.21 -- 5 ND ND ND ND ND ND ug/L 10/24/12 0.21 -- 5 ND ND ND 0.4 J ND ND ug/L 04/24/13 0.31 -- 5 ND ND ND 0.37 J ND ND ug/L 09/10/13 0.21 -- 5 ND ND ND 0.47 J ND ND ug/L 04/22/14 0.21 -- 5 ND ND ND ND ND ND ug/L 10/06/14 0.21 -- 5 ND ND ND ND ND ND ug/L 04/07/15 0.21 -- 5 ND ND ND ND ND ND ug/L 10/07/15 0.21 -- 5 ND ND ND ND ND ND ug/L 04/26/16 0.21 -- 5 ND ND ND ND ND ND ug/L 09/28/16 0.21 -- 5 ND ND ND 0.8 J ND ND ug/L 04/27/17 0.21 -- 5 ND ND ND ND ND ND ug/L 10/17/17 0.21 -- 5 ND ND ND 0.68 J ND ND ug/L 04/16/18 0.21 -- 5 ND ND ND ND ND ND ug/L 10/18/18 0.21 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.21 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 0.21 1.0 -- ND ND ND 0.64 J ND ND ug/L 04/20/20 0.21 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.21 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.21 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.21 1.0 -- ND ND ND ND ND ND u /L 04/21/22 0.21 1.0 -- ND ND ND ND ND ND cis- 1,2-Dichloroethene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 70 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND EPA MCL = 70 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 0.34 J 0.69 J ND ND ug/L 09/25/07 -- -- -- ND 2.2 J 0.45 J 1.3 J 0.14 ND ug/L 05/02/08 0.30 -- 5 ND 1.3 J 0.42 J 0.77 J ND ND ug/L 12/05/08 0.36 -- 5 ND ND ND ND ND ND ug/L 04/16/09 0.36 -- 5 -- 1.2 J 0.58 J 0.67 J ND ND ug/L 10/07/09 0.36 -- 5 ND 2.4 J 0.62 J 1.4 J ND ND ug/L 04/28/10 0.075 -- 5 ND 1.9 J 0.61 J 0.87 J ND ND ug/L 10/11/10 0.36 -- 5 ND 2.2 J 0.51 J 1.1 J ND ND ug/L 05/10/11 0.72 -- 5 ND 1.1 J ND 0.89 J ND ND ug/L 10/06/11 0.72 -- 5 ND 1.5 J ND 1.1 J ND ND ug/L 04/16/12 0.15 -- 5 ND 0.86 J 0.55 J 0.63 J ND ND ug/L 10/24/12 0.15 -- 5 ND 0.62 J ND 0.8 J ND ND ug/L 04/24/13 0.27 -- 5 ND 0.73 J ND 0.85 J ND ND ug/L 09/10/13 0.15 -- 5 ND 0.98 J 0.48 J 0.87 J ND ND ug/L 04/22/14 0.15 -- 5 ND 0.52 J ND ND ND ND ug/L 10/06/14 0.15 -- 5 ND 0.61 J ND ND ND ND ug/L 04/07/15 0.15 -- 5 ND 0.44 J ND 0.52 J ND ND ug/L 10/07/15 0.15 -- 5 ND 0.94 J 0.41 J 0.87 J ND ND ug/L 04/26/16 0.15 -- 5 ND 0.51 J ND 0.43 J ND ND ug/L 09/28/16 0.15 -- 5 0.15 0.77 J ND ND ND ND ug/L 04/27/17 0.15 -- 5 ND 0.57 J ND 0.49 J ND ND ug/L 10/17/17 0.15 -- 5 ND 0.47 J ND 0.64 J ND ND ug/L 04/16/18 0.15 -- 5 ND 0.56 J ND ND ND ND ug/L 10/18/18 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.15 1.0 -- ND 0.65 J ND ND ND ND ug/L 10/09/19 0.15 1.0 -- ND 0.57 J 0.41 J 0.51 J ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.15 1.0 -- ND 0.87 J 0.44 J ND ND ND ug/L 04/29/21 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.15 1.0 -- ND ND ND ND ND ND 10 of 12 August 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Methylene Chloride ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND NC 2L = 5 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND EPA MCL = 5 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 0.51 1 ND ND 0.088 ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/02/08 0.24 -- 1 ND ND ND ND ND ND ug/L 12/05/08 0.53 -- 1 ND ND ND ND ND ND ug/L 04/16/09 0.53 -- 1 -- ND ND ND ND ND ug/L 10/07/09 0.53 -- 1 ND 0.76 1 ND ND ND ND ug/L 04/28/10 0.07 -- 1 ND ND ND ND ND ND ug/L 10/11/10 0.53 -- 1 ND 0.77 1 ND ND ND ND ug/L 05/10/11 0.14 -- 1 ND ND ND ND ND ND ug/L 10/06/11 0.14 -- 1 ND ND ND ND ND ND ug/L 04/16/12 0.23 -- 1 ND 0.37 1 ND ND ND ND ug/L 10/24/12 0.23 -- 1 ND ND ND ND ND ND ug/L 04/24/13 0.50 -- 1 ND ND ND ND ND ND ug/L 09/10/13 0.23 -- 1 ND ND ND ND ND ND ug/L 04/22/14 0.23 -- 1 ND ND ND ND ND ND ug/L 10/06/14 0.23 -- 1 ND ND ND ND ND ND ug/L 04/07/15 0.23 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.23 -- 1 ND ND ND ND ND ND ug/L 04/26/16 0.23 -- 1 ND ND ND ND ND ND ug/L 09/28/16 0.23 -- 1 ND ND ND ND ND ND ug/L 04/27/17 0.23 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.23 1.0 -- ND ND 0.78 B ND ND 0.5 1 ug/L 10/09/19 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 10/13/20 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.23 1.0 -- ND ND ND ND ND ND u /L 04/21/22 0.23 1.0 -- ND ND ND ND ND ND Vinyl Chloride ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND NC 2L = 0.03 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND EPA MCL = 2 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 -- -- -- 0.15 1 0.72 1 0.54 1 0.63 1 ND ND ug/L 09/25/07 -- -- -- ND 0.56 1 ND 0.77 1 ND ND ug/L 05/02/08 0.3 -- 1 ND 0.64 1 0.9 1 0.65 1 ND ND ug/L 12/05/08 0.3 -- 1 ND 0.36 ND 0.67 1 ND ND ug/L 04/16/09 0.3 -- 1 -- ND 0.46 1 ND ND ND ug/L 10/07/09 0.3 -- 1 ND 0.49 1 ND ND ND ND ug/L 04/28/10 0.083 -- 1 ND 0.52 1 0.62 1 0.44 1 ND ND ug/L 10/11/10 0.3 -- 1 ND 0.51 1 ND ND ND ND ug/L 05/10/11 0.6 -- 1 ND ND ND ND ND ND ug/L 10/06/11 0.6 -- 1 ND ND ND ND ND ND ug/L 04/16/12 0.32 -- 1 ND 0.45 1 0.48 1 ND ND ND ug/L 10/24/12 0.32 -- 1 ND ND ND ND ND ND ug/L 04/24/13 0.28 -- 1 ND 0.45 1 ND 0.45 1 ND ND ug/L 09/10/13 0.32 -- 1 ND ND 0.45 1 ND ND ND ug/L 04/22/14 0.32 -- 1 ND ND ND ND ND ND ug/L 10/06/14 0.32 -- 1 ND ND ND ND ND ND ug/L 04/07/15 0.32 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.32 -- 1 ND ND 0.65 1 0.59 1 ND ND ug/L 04/26/16 0.32 -- 1 ND ND ND 0.47 1 ND ND ug/L 09/28/16 0.32 -- 1 ND ND ND 0.52 1 ND ND ug/L 04/27/17 0.32 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.32 -- 1 ND ND ND 0.45 1 ND ND ug/L 04/16/18 0.32 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.32 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.32 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 0.32 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.32 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.32 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.32 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.32 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.32 1.0 -- ND ND ND ND ND ND 1,DEP 11 of 12 August 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.105 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Method Detection Practical Quantitation SWS Reporting Upgradient Well Downgradient Wells Blanks Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 1,4-Dioxane ug/L 10/18/18 1.2 2.0 -- ND 240 250 300 60 ND NC 2L = 3 ug/L ug/L 04/08/19 1.2 2.0 -- ND 210 33 46 55 ND ug/L 10/09/19 1.2 2.0 -- ND 250 140 360 43 ND ug/L 04/20/20 0.80 2.0 -- ND 210 64 70 42 ND ug/L 10/13/20 0.80 2.0 -- ND 200 120 200 39 ND ug/L 04/29/21 0.80 2.0 -- ND 250 200 30 37 ND ug/L 10/12/21 0.80 2.0 -- 0.80 J 240 200 350 43 ND ug/L 04/21 /22 0.80 2.0 -- ND 270 200 89 47 ND Notes: mg/L = milligrams per liter ug/L = micrograms per liter NC 2L = North Carolina Water Quality Standard EPA MCL = United States Environmental Protection Agency Maximum Contaminant Limit J = Prior to the 11/18 event, J flags are estimated values below the SWS Reporting limit. Starting with the 11/18 event, J flags are estimated values between MDL and PQL. B = blank -qualified data ND = not detected above the laboratory detection limit or stated reporting limit -- = no data available or no limit established # = EPA Action Level * = EPA Secondary MCL Blanks = field, trip and method blanks Bold = concentrations above applicable IMAC and/or NC 2L have been bolded. Shaded = concentrations above applicable EPA MCL have been shaded. MDL = laboratory method detection limit Data prior to April 2017 provided by S&ME Engineering Laboratory method blank data was unavailable prior to April 2017. However, B flags for the 04/16/09, 10/07/09, and 10/11/10 were present on laboratory electronic files. The following dilutions were noted for the April 2022 event: 1,4-dioxane (10x at 1-1 and 1-2and 5x at 1-3), and antimony and thallium by (2x) in MW-13. SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on 01/18/07 NN') LDER 12of12 August 2022 19131339.105 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Monitoring Reporting Sample Upgradient Well Downgradient Wells MW-13 1-1 1-2 1-3 1-4 Constituent/Parameter Units Date pH (Field) S.U. 03/27/00 6.61 6.31 6.69 7.17 6.67 S.U. 09/13/00 15.70 6.59 5.84 6.68 6.49 S.U. 03/12/01 6.55 5.62 6.19 6.34 -- S. U . 09/13/01 6.29 5.58 6.01 6.25 6.80 S.U. 03/07/02 7.48 5.59 6.02 6.26 6.60 S. U . 09/18/02 6.44 5.77 6.08 6.37 6.64 S.U. 04/15/03 -- 6.08 6.39 6.61 6.71 S.U. 10/15/03 6.75 5.79 6.31 6.64 6.75 S. U . 03/24/04 8.02 7.80 7.81 7.80 8.17 S. U . 09/22/04 6.96 5.94 6.76 6.60 6.96 S.U. 05/10/05 8.58 8.03 8.14 8.27 8.50 S.U. 10/11/05 6.5 5.54 5.95 6.18 6.60 S. U . 04/24/06 -- 5.65 6.21 6.40 6.89 S.U. 10/16/06 -- 5.49 5.96 6.19 6.60 S.U. 04/10/07 6.35 5.62 6.19 6.46 6.95 S.U. 09/25/07 6.49 5.64 6.18 6.36 6.49 S. U . 05/02/08 6.48 5.60 6.31 6.61 7.01 S.U. 12/05/08 7.29 5.80 6.63 6.50 7.07 S.U. 04/16/09 7.29 6.40 6.82 7.11 7.46 S.U. 10/07/09 9.18 7.44 7.97 8.15 8.81 S.U. 04/28/10 6.6 5.67 6.08 6.30 6.78 S.U. 10/05/10 7.5 6.38 6.94 7.06 7.55 S.U. 05/10/11 -- 7.35 8.37 7.96 8.55 S.U. 10/06/11 7.61 6.14 7.12 6.89 7.69 S.U. 04/16/12 7.83 6.40 7.03 7.41 7.87 S.U. 10/24/12 7.88 7.49 8.25 7.66 8.59 S.U. 04/24/13 8.29 7.07 8.05 8.00 8.77 S.U. 09/09/13 8.33 6.76 7.22 7.31 8.12 S. U . 04/22/14 8.4 5.55 6.64 7.03 8.52 S.U. 10/01/14 7.69 6.04 6.70 6.85 7.43 S.U. 04/07/15 6.76 5.82 6.15 6.33 6.67 S.U. 10/06/15 6.47 5.48 5.89 5.97 6.35 S. U . 04/18/16 6.36 5.87 6.19 6.38 6.82 S.U. 09/26/16 6.54 5.64 5.99 6.11 6.57 S. U . 04/25/17 6.46 5.82 6.25 6.32 6.73 S.U. 10/16/17 6.55 5.75 6.28 6.22 6.68 S. U . 04/16/18 6.50 5.70 6.09 6.31 6.66 S.U. 10/18/18 6.39 5.84 6.08 6.21 6.70 S. U . 04/08/19 6.67 5.78 6.53 6.54 6.79 S.U. 10/09/19 6.43 5.75 6.16 6.20 6.67 S. U . 04/20/20 6.49 5.91 6.34 6.51 6.72 S.U. 10/13/20 5.90 5.73 6.16 6.29 6.71 S. U . 04/29/21 6.77 5.90 6.30 6.82 7.21 S.U. 10/12/21 6.29 5.79 6.09 6.13 6.55 S.U. 04/19/22 6.59 6.79 7.10 6.55 6.74 Specific Conductance (Field) US/cm 03/27/00 353 877 1361 1687 1989 US/cm 09/13/00 335 971 1485 660 875 US/cm 03/12/01 7520 -- -- -- -- US/cm 09/13/01 88838 73234 68639 71673 65394 US/cm 03/07/02 676 1692 2240 2127 3445 US/cm 09/18/02 658 1619 2300 2913 2319 US/cm 04/15/03 -- 1650 1464 2040 1950 us/cm 10/15/03 480 1650 1890 2640 2720 US/cm 03/24/04 428 1650 1990 624 2690 us/cm 09/22/04 472 1690 1179 2720 1094 US/cm 05/10/05 434 1510 2030 2570 5560 us/cm 10/11/05 576 1930 2430 3020 1700 US/cm 04/24/06 -- 2080 2540 3010 3010 US/cm 10/16/06 -- 2090 2590 3020 2600 US/cm 04/10/07 514 219 252 289 267 US/cm 09/25/07 582 2210 2570 3170 2570 US/cm 05/02/08 45.7 289 270 295 267 US/cm 12/05/08 5390 2490 1410 3470 2200 us/cm 04/16/09 539 3440 2290 2760 2420 us/cm 10/07/09 552 2580 2720 3410 2160 US/cm 04/28/10 439 2220 2270 2640 1840 us/cm 10/05/10 446 2240 2380 3000 630 US/cm 05/10/11 -- 3010 1020 2670 1980 us/cm 10/06/11 447 2620 1290 2980 1270 us/cm 04/16/12 416 3060 2230 2480 1960 us/cm 10/24/12 399 3270 280 2910 2030 us/cm 04/24/13 410 3210 1336 2740 1880 US/cm 09/09/13 414 3280 2370 2900 1840 US/cm 04/22/14 395 3300 2930 2440 2010 US/cm 10/01/14 425 3400 2580 3320 193 US/cm 04/07/15 268 2140 1610 1920 1260 US/cm 10/06/15 304 2341 2017 2424 1239 US/cm 04/18/16 323 2515 1803 1798 1338 US/cm 09/26/16 340 2581 2076 2324 1390 US/cm 04/25/17 362 3197 1039 2454 1286 US/cm 10/16/17 367 3260 1897 2843 1706 US/cm 04/16/18 321 2992 2089 2224 1633 US/cm 10/18/18 317 2662 1985 2146 1363 US/cm 04/08/19 368 3111 895 1301 1813 US/cm 10/09/19 287 2937 1892 2475 1834 us/cm 04/20/20 424 3461 945 1330 1787 US/cm 10/13/20 393 2546 1406 1729 1838 US/cm 04/29/21 425 3558 2169 922 1723 US/cm 10/12/21 345 3001 1955 2305 1682 US/cm 04/19/22 397 3325 2141 1288 1665 W%J) GOLDER 1of3 August 2022 19131339.105 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Monitoring Reporting Sample Upgradient Well Downgradient Wells MW-13 1-1 1-2 1-3 1-4 Constituent/Parameter Units Date Temperature (Field) °C 03/27/00 14.30 13.95 15.40 14.57 11.62 °C 09/13/00 15.70 17.43 18.05 17.22 17.91 °C 03/12/01 15.04 13.65 15.04 14.75 -- °C 09/13/01 15.73 18.52 18.86 17.28 19.88 °C 03/07/02 14.25 13.33 13.83 14.22 11.08 °C 09/18/02 10.56 12.05 12.80 11.62 12.97 °C 04/15/03 -- 13.83 14.52 15.71 12.16 °C 10/15/03 14.67 16.45 17.50 16.33 17.17 °C 03/24/04 14.42 13.17 14.11 13.72 10.83 °C 09/22/04 16.30 15.95 17.17 15.72 17.61 °C 05/10/05 19.24 17.81 20.04 18.42 20.55 °C 10/11/05 12.80 18.38 19.14 19.47 19.14 °C 04/24/06 -- 15.69 17.92 17.35 15.53 °C 10/16/06 -- 15.79 16.82 16.15 17.20 °C 04/10/07 14.57 15.93 15.79 16.05 13.48 °C 09/25/07 23.41 22.48 24.49 19.37 21.12 °C 05/02/08 14.55 18.70 21.71 19.93 20.64 °C 12/05/08 14.53 11.64 12.02 12.46 11.01 °C 04/16/09 14.53 14.76 16.12 14.76 13.94 °C 10/07/09 13.65 18.32 19.72 18.38 20.45 °C 04/28/10 14.56 14.70 16.97 13.99 14.56 °C 10/05/10 18.37 18.19 17.54 18.28 17.41 °C 05/10/11 -- 19.77 21.08 19.87 18.46 °C 10/06/11 18.70 20.90 20.23 18.60 19.28 °C 04/16/12 14.07 19.88 22.31 20.35 20.01 °C 10/24/12 12.98 12.90 19.12 20.00 19.20 °C 04/24/13 13.74 16.77 18.17 17.81 11.65 °C 09/09/13 23.09 18.62 25.21 19.86 20.92 °C 04/22/14 16.52 19.69 26.28 21.77 10.79 °C 10/01/14 11.86 17.04 18.64 17.64 18.84 °C 04/07/15 13.96 16.12 15.98 15.68 16.22 °C 10/06/15 15.81 17.01 16.63 14.50 17.89 °C 04/18/16 16.29 18.46 18.34 13.97 16.12 °C 09/26/16 18.06 20.33 23.90 20.57 21.39 °C 04/25/17 14.35 14.78 16.55 15.23 15.11 °C 10/16/17 14.77 15.93 17.89 16.67 18.34 °C 04/16/18 14.3 12.7 14.9 14.9 14.5 °C 10/18/18 16.3 15.9 18.4 16.3 18.7 °C 04/08/19 15.7 13.9 15.5 15.4 14.9 °C 10/09/19 17.7 17.0 20.0 16.5 19.9 °C 04/20/20 15.2 14.5 14.7 14.9 14.8 °C 10/13/20 17.1 16.8 18.1 17.5 18.7 °C 04/29/21 14.8 14.1 15.4 15.4 14.7 °C 10/12/21 15.5 16.6 19.3 17.1 18.1 °C 04/19/22 15.3 14.2 15.9 14.1 13.0 Turbidity (Field) NTU 05/10/05 1.01 3.97 250 36.8 574 NTU 10/11/05 10.0 3.02 411 126 551 NTU 04/24/06 -- 7.18 250 39 398 NTU 10/16/06 -- 1.78 200 23.4 493 NTU 04/10/07 -- -- -- -- -- NTU 09/25/07 -- -- -- -- -- NTU 05/02/08 -- -- -- -- -- NTU 12/05/08 4.42 -- -- -- -- NTU 04/16/09 -- -- -- -- -- NTU 10/07/09 -- -- -- -- -- NTU 04/28/10 6.98 35.2 33.8 8.54 199 NTU 10/05/10 3.28 4.63 44.1 10.01 196 NTU 05/10/11 -- -- -- -- -- NTU 10/06/11 6.75 7.00 48.6 21.5 264 NTU 04/16/12 4.28 14.45 30.1 16.84 152 NTU 10/24/12 4.65 13.63 152 11.85 160 NTU 04/24/13 9.00 21.2 61.5 12.33 248 NTU 09/09/13 4.16 5.42 16.03 8.80 63.9 NTU 04/22/14 4.72 19.6 42.1 5.37 48 NTU 10/01/14 5.76 5.14 26 61 11.92 NTU 04/07/15 3.34 24.7 106 6.52 34 NTU 10/06/15 1.62 2.41 54.3 2.96 27.7 NTU 04/18/16 2.01 12.09 40.9 1.05 51 NTU 09/26/16 21.3 2.59 38.5 1.20 14 NTU 04/25/17 10.3 21.4 40.9 1.89 48.9 NTU 10/16/17 3.58 0.58 22.9 3.78 7.04 NTU 04/16/18 2.56 8.37 102 6.37 8.86 NTU 10/18/18 3.07 2.13 19.5 366 15.7 NTU 04/08/19 3.46 7.18 45.0 6.47 17.0 NTU 10/09/19 1.35 1.07 16.7 1.84 9.18 NTU 04/20/20 1.33 9.70 30.9 2.79 31.8 NTU 10/13/20 0.98 9.89 14.9 1.90 23.8 NTU 04/29/21 0.80 4.90 16.0 2.96 9.95 NTU 10/12/21 1.05 3.08 8.24 2.04 9.79 NTU 04/19/22 1.13 7.35 9.55 0.98 9.56 N\ , } GOLDEP 2of3 August 2022 19131339.105 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Monitoring Reporting Sample Upgradient Well Downgradient Wells MW-13 1-1 1-2 1-3 1-4 Constituent/Parameter Units Date Oxidation Reduction my 05/10/05 -65 -250 -322 -313 -278 Potential (Field) my 10/11/05 197 -78 -26 -54 -7 my 04/24/06 -- 58 -129 -89 -107 my 10/16/06 -- -65 -159 -138 -207 my 04/10/07 -- -- -- -- -- mv 09/25/07 -- -- -- -- -- mv 05/02/08 -- -- -- -- -- mv 12/05/08 105 -- -- -- -- mv 04/16/09 -- -- -- -- -- mv 10/07/09 -- -- -- -- -- mv 04/28/10 288 281 84 108 51 my 10/05/10 244 287 105 123 82 my 05/10/11 -- -- -- -- -- mv 10/06/11 166 185 4 87 -63 my 04/16/12 171 134 33 62 -65 my 10/24/12 127 73 -37 63 -109 my 04/24/13 178 89 -70 49 -102 my 09/09/13 116 106 25 63 -90 my 04/22/14 118 164 92 125 -78 my 10/01/14 109 45 -70 -45 -133 my 04/07/15 50 36 0 16 -73 my 10/06/15 -38.4 123 -12 54 106 my 04/18/16 135 63 6 32 -107 my 09/26/16 42.2 22 -32 20 -59 my 04/25/17 154.9 32.9 -18.0 41.8 -68.0 my 10/16/17 154.1 81.7 -42.2 54.2 -88.4 my 04/16/18 364.8 214.4 47.6 201.6 -108.9 my 10/18/18 158.7 -4.1 -29.7 150.3 -56.2 my 04/08/19 41.2 96.8 -43.8 68.2 -102.4 my 10/09/19 196.3 46.2 10.4 32.0 -118.9 my 04/20/20 91.3 10.8 -10.1 83.7 -134.3 my 10/13/20 39.7 37.4 -28.8 69.2 -110.9 my 04/29/21 188.9 26.4 -20.1 50.0 -118.2 my 10/12/21 222.5 17.2 -30.1 50.2 -102.2 my 04/19/22 179.4 -3.5 -45.2 75.6 -128.6 Dissolved Oxygen (Field) mg/L 05/10/05 3.61 0.41 0.23 0.38 0.60 mg/L 10/11/05 5.69 2.21 0.65 0.82 0.42 mg/L 04/24/06 -- 0.60 0.23 0.40 0.18 mg/L 10/16/06 -- 1.10 0.40 0.41 0.14 mg/L 04/10/07 -- -- -- -- -- mg/L 09/25/07 -- -- -- -- -- mg/L 05/02/08 -- -- -- -- -- mg/L 12/05/08 5.01 -- -- -- -- mg/L 04/16/09 -- -- -- -- -- mg/L 10/07/09 -- -- -- -- -- mg/L 04/28/10 6.94 4.89 4.32 1.27 0.08 mg/L 10/05/10 3.49 1.91 2.27 0.55 0.05 mg/L 05/10/11 -- -- -- -- -- mg/L 10/06/11 4.49 1.19 3.38 0.65 0.22 mg/L 04/16/12 4.75 0.97 2.51 1.59 0.61 mg/L 10/24/12 3.75 1.45 0.77 0.90 0.21 mg/L 04/24/13 4.36 1.31 1.75 0.90 0.38 mg/L 09/09/13 5.95 3.46 4.18 2.84 0.41 mg/L 04/22/14 8.69 1.41 3.71 2.94 1.65 mg/L 10/01 /14 4.59 1.67 3.42 0.42 0.17 mg/L 04/07/15 5.52 4.83 2.76 3.97 0.91 mg/L 10/06/15 3.80 0.99 1.19 0.69 0.37 mg/L 04/18/16 6.18 1.11 0.98 0.59 0.19 mg/L 09/26/16 4.81 0.50 0.61 0.64 0.14 mg/L 04/25/17 3.65 0.40 2.69 0.60 0.20 mg/L 10/16/17 2.85 0.68 0.51 0.22 0.05 mg/L 04/16/18 3.38 0.47 0.63 0.59 0.16 mg/L 10/18/18 3.55 0.92 1.91 0.39 0.70 mg/L 04/08/19 3.43 0.14 0.84 0.32 1.01 mg/L 10/09/19 2.37 2.98 3.04 0.55 1.33 mg/L 04/20/20 2.89 0.65 1.88 0.36 0.12 mg/L 10/13/20 2.33 0.66 0.75 0.42 0.32 mg/L 04/29/21 1.58 2.23 0.61 0.34 2.49 mg/L 10/12/21 1.37 2.14 3.27 0.45 0.50 mg/L 04/19/22 1.45 0.33 3.16 0.41 0.20 Notes: S.U. = Standard Units NTU = Nephelometric Turbidity Units uS/cm = microsiemens per centimeter mg/L = milligrams per liter my = Millivolts -- = no data available Data prior to April 2017 provided by S&ME Engineering 1N 1,61) GOLDER 3of3 August 2022 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Antimony ug/L 03/01/00 -- -- 30 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 30 ND ND ND ND ND ND ug/L 03/01/01 -- -- 30 ND ND ND ND ND ND ug/L 09/01/01 -- -- 30 ND ND ND ND ND ND ug/L 03/01/02 -- -- 30 ND ND ND ND ND ND ug/L 09/01/02 -- -- 30 ND ND ND ND ND ND ug/L 04/01/03 -- -- 30 ND ND ND ND ND ND ug/L 10/01/03 -- -- 30 ND ND ND ND ND ND ug/L 03/01/04 -- -- 30 ND ND ND ND ND ND ug/L 09/01/04 -- -- 30 ND ND ND ND ND ND ug/L 05/01/05 -- -- 30 ND ND ND ND ND ND ug/L 10/01/05 -- -- 30 ND ND ND ND ND ND ug/L 04/01/06 -- -- 30 ND ND ND ND ND ND ug/L 10/01/06 -- -- 30 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.68 -- 6 -- ND ND ND ND ND ug/L 12/04/08 0.68 -- 6 -- ND ND ND ND ND ug/L 04/13/09 0.68 -- 6 -- ND ND ND ND ND ug/L 10/20/09 0.073 -- 6 0.461 B 0.185 B 0.351 B 0.346 B 0.337 B -- ug/L 04/30/10 0.22 -- 6 -- ND 0.272 1 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 ug/L 04/29/21 0.74 2.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.74 2.0 -- ND ND ND ND ND ND ug/L 04/21/22 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 ug/L 04/29/21 7.6 10 -- ND ND ND ND ND ND ug/L 10/14/21 7.6 10 -- ND ND ND ND ND ND ug/L 04/21/22 7.6 10 -- ND ND ND ND ND ND %% I) GOLDER 1of12 August 2022 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Barium ug/L 03/01/00 -- -- 500 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 500 ND ND ND ND ND ND Human Health = 200 mg/L ug/L 03/01/01 -- -- 500 ND ND ND ND ND ND ug/L 09/01/01 -- -- 500 ND ND ND ND ND ND ug/L 03/01/02 -- -- 500 ND ND ND ND ND ND ug/L 09/01/02 -- -- 500 ND ND ND ND ND ND ug/L 04/01/03 -- -- 500 ND ND ND ND ND ND ug/L 10/01/03 -- -- 500 ND ND ND ND ND ND ug/L 03/01/04 -- -- 500 ND ND ND ND ND ND ug/L 09/01/04 -- -- 500 ND ND ND ND ND ND ug/L 05/01/05 -- -- 500 ND ND ND ND ND ND ug/L 10/01/05 -- -- 500 ND ND ND ND ND ND ug/L 04/01/06 -- -- 500 ND ND ND ND ND ND ug/L 10/01/06 -- -- 500 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 41.8 J 54.8 J 21.7 J 25.4 J 25.6 J ND ug/L 09/25/07 -- -- -- 74.5 J 70.9 J 16.8 J 23 J 24 J ND ug/L 05/05/08 0.2 -- 100 -- 51.2 B 53 B 92.5 B 65.5 B ND ug/L 12/04/08 1 -- 100 -- 35.9 J 21.8 J 27 1 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 1 27.2 J 26.9 J ND ug/L 04/30/10 1 -- 100 -- 48.5 J 30.9 1 37.1 J 44.2 J ND ug/L 10/11/10 1 -- 100 -- 47.1 J 18.8 J 29.3 J 30.6 J ND ug/L 05/12/11 1 -- 100 77.3 J 39.3 J 40.3 J 35.3 J 37 J ND ug/L 10/07/11 1 -- 100 74.2 J 76.4 J 21.4 J 42.7 J 32.2 J ND ug/L 04/19/12 1 -- 100 43.7 J 48.4 J 23.5 J 33.7 J 33.7 J ND ug/L 10/26/12 1 -- 100 48.2 J 51.2 J 25.2 J 34.8 J 35.1 J ND ug/L 04/25/13 1 -- 100 57 J 65.1 J 28.5 J 40.8 J 37.8 J ND ug/L 09/12/13 1 -- 100 56.7 J 40.7 J 25.3 J 31.5 J 33.9 J ND ug/L 04/25/14 1 -- 100 100 60.8 J 49.3 J 52.7 J 48.8 J ND ug/L 10/02/14 1 -- 100 112 45.9 J 22.3 J 24.4 J 25.1 J ND ug/L 04/06/15 1 -- 100 59.3 J 44.3 J 42.2 J 35.5 J 47.3 J ND ug/L 10/07/15 1 -- 100 85.7 J 46.2 J 28.3 J 319 41 J ND ug/L 04/20/16 1 -- 100 113 46.3 J 47.5 J 31 J 35.4 J ND ug/L 09/26/16 1 -- 100 44.8 J 52.8 J 17.6 J 27.9 J 33.9 J ND ug/L 04/28/17 1 -- 100 46.5 J 45.4 J 59.9 J 50.2 J 45.0 J ND ug/L 10/17/17 1 -- 100 40.1 J 33.6 J 55.8 1 41.2 J 37.8 J ND ug/L 04/16/18 1 -- 100 42.9 J 45.4 J 42.1 J 43.9 J 44.1 J ND ug/L 10/18/18 1.1 10 -- 56.6 57.4 56.4 61.7 61.3 ND ug/L 04/12/19 1.1 10 -- 60.9 64.6 40.0 56.8 56.6 ND ug/L 10/08/19 1.1 10 -- 55.9 49.1 55.1 57.8 60.0 ND ug/L 04/20/20 1.1 10 -- 41.9 48.0 44.2 42.2 40.5 ND ug/L 10/15/20 1.1 10 -- 47.9 48.5 47.3 52.0 52.9 ND ug/L 04/29/21 1.1 10 -- 47.5 42.5 41.6 45.0 41.8 ND ug/L 10/14/21 1.1 10 -- 43.8 41.4 51.2 43.1 44.2 ND ug/L 04/21/22 1.1 10 -- 42.7 51.1 41.4 45.5 43.6 ND Beryllium ug/L 03/01/00 -- -- 2 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 2 ND ND ND ND ND ND Acute = 65 ug/L ug/L 03/01/01 -- -- 2 ND ND ND ND ND ND Chronic = 6.5 ug/L ug/L 09/01/01 -- -- 2 ND ND ND ND ND ND ug/L 03/01/02 -- -- 2 ND ND ND ND ND ND ug/L 09/01/02 -- -- 2 ND ND ND ND ND ND ug/L 04/01/03 -- -- 2 2.4 2.4 2.3 2.3 ND ND ug/L 10/01/03 -- -- 2 ND ND ND ND ND ND ug/L 03/01/04 -- -- 2 ND ND ND ND ND ND ug/L 09/01/04 -- -- 2 ND ND ND ND ND ND ug/L 05/01/05 -- -- 2 ND ND ND ND ND ND ug/L 10/01/05 -- -- 2 ND ND ND ND ND ND ug/L 04/01/06 -- -- 2 ND ND ND ND ND ND ug/L 10/01/06 -- -- 2 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.7 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.1 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.08 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.1 -- 1 0.113 J ND ND ND ND 0.42 J ug/L 04/30/10 0.1 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.1 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.1 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.1 -- 1 ND 0.149 J ND ND ND ND ug/L 04/19/12 0.1 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.1 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.1 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.1 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.1 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.1 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.1 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.1 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.1 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.1 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.13 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.13 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.16 1.0 -- 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 ug/L 04/29/21 0.16 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.16 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.16 1.0 -- ND ND ND ND ND ND %% I) GOLDER 2 of 12 August 2022 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date 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 SW-1 = 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 09/01/02 -- -- 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 05/01/05 -- -- 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 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.5 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.36 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.09 -- 1 -- 0.14 J 0.17 J 0.26 J 0.21 J ND ug/L 10/20/09 0.36 -- 1 0.477 J ND ND ND ND ND ug/L 04/30/10 0.36 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.36 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.36 -- 1 0.471 J ND ND ND ND ND ug/L 10/07/11 0.36 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.36 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.36 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.36 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.36 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.36 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.36 -- 1 0.661 J ND ND ND ND ND ug/L 04/06/15 0.36 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.36 -- 1 0.784 J ND ND 5.66 ND ND ug/L 04/20/16 0.36 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.36 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.36 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.36 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.36 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.36 1.0 -- 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 ug/L 04/29/21 0.36 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.36 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.36 1.0 -- ND ND ND ND ND ND Chromium ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 10 ND ND 25 14 20 ND 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 SW-4 = 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 SW-4 = 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 10/07/11 1 -- 10 6.97 J 6.25 J 1.21 J 3.00 J ND ND ug/L 04/19/12 1 -- 10 1.11 J ND ND ND ND ND ug/L 10/26/12 1 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.4 -- 10 1.44 J 2.12 J ND ND 2.57 J ND ug/L 09/12/13 1.4 -- 10 ND ND ND ND ND ND ug/L 04/25/14 1.4 -- 10 11.7 ND 4.26 J 1.7 J ND ND ug/L 10/02/14 1.4 -- 10 20.6 B 2.13 B 13.4 B 2.50 B 2.70 B -- ug/L 04/06/15 1.4 -- 10 3.66 J ND 3.36 J ND 3.51 J ND ug/L 10/07/15 1.4 -- 10 7.93 J ND ND 66.1 ND ND ug/L 04/20/16 1.4 -- 10 14.6 ND 6.73 J ND ND ND ug/L 09/26/16 1.4 -- 10 ND ND ND ND ND ND ug/L 04/28/17 1.4 -- 10 ND ND 5.88 J 1.43 J ND ND ug/L 10/17/17 1.4 -- 10 ND ND 3.94 J ND ND ND ug/L 04/16/18 1.4 -- 10 1.74 J ND 1.80 J ND 1.92 J ND ug/L 10/18/18 1.4 10 -- 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 ug/L 10/14/21 1.4 10 -- 2.33 J ND 2.82 J ND ND ND ug/L 04/21/22 1.4 10 -- 2.03 J ND 1.80 J ND ND ND %% I) GOLDER 3 of 12 August 2022 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Cobalt ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND 17 ND ND ND ND ug/L 04/01/03 -- -- 10 14 14 15 14 ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 3.5 J ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND 7.1 J 3.8 J ND ug/L 12/04/08 1.1 -- 10 -- ND ND ND 2.9 J ND ug/L 04/13/09 0.6 -- 10 -- 1.8 J 0.7 J 0.8 J 0.6 J ND ug/L 10/20/09 1.1 -- 10 3.43 J ND ND ND ND ND ug/L 04/30/10 1.1 -- 10 -- ND ND ND 1.98 J ND ug/L 10/11/10 1.1 -- 10 -- ND ND ND ND ND ug/L 05/12/11 1.1 -- 10 3.19 J ND ND ND ND ND ug/L 10/07/11 1.1 -- 10 4.06 J 6.5 J 1.19 J 2.28 J ND ND ug/L 04/19/12 1.1 -- 10 ND ND ND ND ND ND ug/L 10/26/12 1.1 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.1 -- 10 ND 2.03 J ND ND ND ND ug/L 09/12/13 1.1 -- 10 ND ND 1.46 J 1.15 J ND ND ug/L 04/25/14 1.1 -- 10 4.31 J ND 1.91 J ND ND ND ug/L 10/02/14 1.1 -- 10 8.95 J ND 4.56 J 2.46 J 2.45 J ND ug/L 04/06/15 1.1 -- 10 1.73 J ND 2.44 J 1.56 J 2.18 J ND ug/L 10/07/15 1.1 -- 10 4.34 J ND 2.43 J 46.5 1.92 J ND ug/L 04/20/16 1.1 -- 10 7.38 J ND 4.32 J 1.66 J 2.1 J ND ug/L 09/26/16 1.1 -- 10 ND 1.30 J ND ND ND ND ug/L 04/28/17 1.1 -- 10 ND ND 2.31 J ND ND ND ug/L 10/17/17 1.1 -- 10 ND ND 2.94 J ND ND ND ug/L 04/16/18 1.1 -- 10 1.65 J 1.49 J ND 1.30 J 1.32 J ND ug/L 10/18/18 1.4 10 -- 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 ug/L 04/29/21 1.4 10 -- ND ND ND ND ND ND ug/L 10/14/21 1.4 10 -- ND ND ND ND ND ND ug/L 04/21/22 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 SW-1 = 15.46 ug/L 03/01/01 -- -- 200 ND ND ND ND ND ND SW-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 10/01/05 -- -- 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 04/10/07 -- -- -- 2.20 J 1.50 J 6.20 J 4.50 J 4.30 J ND ug/L 09/25/07 -- -- -- 11.2 0.6 10.3 8.40 J 10.1 ND ug/L 05/05/08 0.6 -- 10 -- 1.3 J 2.50 1 13.3 3.7 J ND ug/L 12/04/08 1.6 -- 10 -- 20.5 4.60 J 4.30 J 6.40 J ND ug/L 04/13/09 0.81 -- 10 -- 1.93 J 2.56 J 1.87 J 1.78 J ND ug/L 10/20/09 1.6 -- 10 10.7 ND 7.1 J 5.15 J 5.26 J ND ug/L 04/30/10 1.6 -- 10 -- ND 5.90 J 3.30 J 6.33 J ND ug/L 10/11/10 1.6 -- 10 -- 10.2 8.12 J 5.59 J 3.91 J ND ug/L 05/12/11 1.6 -- 10 12.6 ND 3.34 J 2.89 J 3.03 J ND ug/L 10/07/11 1.6 -- 10 8.31 J 5.88 J 4.91 J 6.56 J 3.28 J ND ug/L 04/19/12 1.6 -- 10 2.72 J ND 5.01 1 4.36 J 4.11 J ND ug/L 10/26/12 1.6 -- 10 2.04 J ND 5.47 1 2.22 J 2.71 J ND ug/L 04/25/13 1.6 -- 10 3.43 J 5.01 J 4.46 1 4.33 J 6.16 J ND ug/L 09/12/13 1.6 -- 10 1.94 J ND 1.67 J ND ND ND ug/L 04/25/14 1.6 -- 10 16.7 B 3.46 B 10.5 B 5.92 B 6.29 B -- ug/L 10/02/14 1.6 -- 10 30.9 1.82 J 6.82 J 5.42 J 5.30 J ND ug/L 04/06/15 1.6 -- 10 4.30 J 3.71 J 11.1 5.23 J 8.24 J ND ug/L 10/07/15 1.6 -- 10 11.3 1.6 2.65 J 57.1 2.17 J ND ug/L 04/20/16 1.6 -- 10 21.2 ND 10.8 2.56 J 4.07 J ND ug/L 09/26/16 1.6 -- 10 4.52 J 2.57 J 6.61 J 6.03 J 8.07 J ND ug/L 04/28/17 1.6 -- 10 5.19 J 3.02 J 13.4 4.55 J 4.51 J ND ug/L 10/17/17 1.6 -- 10 3.95 J 1.77 J 9.07 J 2.58 J 2.89 J ND ug/L 04/16/18 1.6 -- 10 4.40 J 4.19 J 4.11 J 5.33 J 3.98 J ND ug/L 10/18/18 1.6 10 -- 3.11 J 3.84 J 2.72 J 2.42 J 3.55 J ND ug/L 04/12/19 1.6 10 -- 3.44 J 5.44 J 5.11 J 3.66 J 4.18 J ND ug/L 10/08/19 1.6 10 -- 2.23 J 1.81 J 2.92 J 2.66 J 1.60 J ND ug/L 04/20/20 1.6 10 -- 4.72 J ND 4.85 J 6.44 J 4.63 J ND ug/L 10/15/20 1.6 10 -- 4.38 J 4.03 J 4.33 J 4.59 J 4.21 J ND ug/L 04/29/21 1.6 10 -- ND ND ND ND ND ND ug/L 10/14/21 1.6 10 -- 1.68 B ND ND 1.82 B ND 2.62 J ug/L 04/21/22 1.6 10 -- ND ND ND ND 2.91 J ND %% I) GOLDER 4 of 12 August 2022 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Lead ug/L 03/01/00 -- -- 10 ND ND 15 ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 10 ND ND 10 ND ND ND SW-1 = 75.88 ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-2 = 66.69 ug/L 09/01/01 -- -- 10 25 ND ND ND ND ND SW-3 = 56.87 ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND SW-4 = 95.12 ug/L 09/01/02 -- -- 10 ND 86 ND ND ND ND SW-5 = 77.30 ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND SW-1 = 2.96 ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND SW-2 = 2.60 ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND SW-3 = 2.22 ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND SW-4 = 3.71 ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND SW-5 = 3.01 ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 11.2 ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND 14.8 ND ND ug/L 12/04/08 1.9 -- 10 -- ND ND ND ND ND ug/L 04/13/09 1.6 -- 10 -- 2.30 J 2.50 J 1.60 1.60 ND ug/L 10/20/09 1.9 -- 10 8.94 J ND ND 2.44 J 3.34 J ND ug/L 04/30/10 1.9 -- 10 -- ND ND ND 2.04 J ND ug/L 10/11/10 1.9 -- 10 -- 5.45 J 1.90 1.90 1.90 ND ug/L 05/12/11 1.9 -- 10 15.4 ND 2.00 J ND ND ND ug/L 10/07/11 1.9 -- 10 10.0 16.4 ND 3.33 J ND ND ug/L 04/19/12 1.9 -- 10 ND ND 2.38 J ND ND ND ug/L 10/26/12 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.9 -- 10 ND 4.74 J ND ND ND ND ug/L 09/12/13 2.1 -- 10 ND ND ND ND ND ND ug/L 04/25/14 2.1 -- 10 11.2 3.23 J 3.36 J 2.23 J 2.82 J ND ug/L 10/02/14 2.1 -- 10 ND ND ND ND ND ND ug/L 04/06/15 3.1 -- 10 ND ND ND ND ND ND ug/L 10/07/15 3.1 -- 10 7.02 J ND ND 93.2 ND ND ug/L 04/20/16 3.1 -- 10 14.6 ND 6.10 J ND ND ND ug/L 09/26/16 3.1 -- 10 ND ND ND ND ND ND ug/L 04/28/17 3.1 -- 10 ND ND 4.66 J ND ND ND ug/L 10/17/17 3.1 -- 10 ND ND 3.18 J ND ND ND ug/L 04/16/18 3.1 -- 10 ND ND ND ND ND ND ug/L 10/18/18 3.1 10 -- ND ND ND ND ND ND ug/L 04/12/19 3.1 10 -- 3.91 J ND ND ND ND ND ug/L 10/08/19 3.1 10 -- ND ND ND ND ND ND ug/L 04/20/20 3.1 10 -- ND ND ND ND ND ND ug/L 10/15/20 3.1 10 -- ND ND ND ND ND ND ug/L 04/29/21 3.1 10 -- ND ND ND ND ND ND ug/L 10/14/21 3.1 10 -- ND ND ND ND ND ND ug/L 04/21/22 3.1 10 -- ND ND ND ND ND ND Nickel ug/L 03/01/00 -- -- 50 ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 50 ND ND 82 65 81 ND SW-1 = 530.88 ug/L 03/01/01 -- -- 50 ND ND ND ND ND ND SW-2 = 480.09 ug/L 09/01/01 -- -- 50 ND ND ND ND ND ND SW-3 = 424.28 ug/L 03/01/02 -- -- 50 ND ND ND ND ND ND SW-4 = 633.69 ug/L 09/01/02 -- -- 50 ND ND ND ND ND ND SW-5 = 538.61 ug/L 04/01/03 -- -- 50 ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 50 ND ND ND ND ND ND SW-1 = 58.96 ug/L 03/01/04 -- -- 50 ND ND ND ND ND ND SW-2 = 53.32 ug/L 09/01/04 -- -- 50 ND ND ND ND ND ND SW-3 = 47.12 ug/L 05/01/05 -- -- 50 ND ND ND ND ND ND SW-4 = 70.38 ug/L 10/01/05 -- -- 50 ND ND ND ND ND ND SW-5 = 59.82 ug/L 04/01/06 -- -- 50 ND ND ND ND ND ND ug/L 10/01/06 -- -- 50 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 2.7 J ND 2.5 J ND ug/L 09/25/07 -- -- -- ND ND 7.6 J ND ND ND ug/L 05/05/08 2.0 -- 50 -- 3.5 J 3.9 J 5.5 J 6.7 J ND ug/L 12/04/08 1.8 -- 50 -- ND 4.3 J 3.8 J 3.2 J ND ug/L 04/13/09 0.6 -- 50 -- 2.3 J 1.5 J 1.6 J 1.5 J ND ug/L 10/20/09 1.8 -- 50 2.94 J ND 2.53 1 1.89 J ND ND ug/L 04/30/10 1.8 -- 50 -- ND ND ND 2.14 J ND ug/L 10/11/10 1.8 -- 50 -- 1.80 2.22 J 1.80 1.80 ND ug/L 05/12/11 1.8 -- 50 2.34 J ND ND 2.57 J 2.66 J ND ug/L 10/07/11 1.8 -- 50 3.64 J 4.23 J 6.40 J 4.31 J 3.43 J ND ug/L 04/19/12 1.8 -- 50 ND ND 2.56 J 2.00 J 2.23 J ND ug/L 10/26/12 1.8 -- 50 ND 1.92 J 5.32 J 5.14 J 5.46 J ND ug/L 04/25/13 1.8 -- 50 2.38 J 3.30 J 6.20 J 6.96 J 6.85 J ND ug/L 09/12/13 1.8 -- 50 ND ND 2.09 J ND ND ND ug/L 04/25/14 1.8 -- 50 4.30 J 2.07 J 7.49 J 5.52 J 5.55 J ND ug/L 10/02/14 1.8 -- 50 7.25 J ND 23.7 J 9.96 J 10.6 J ND ug/L 04/06/15 1.8 -- 50 2.02 J ND 3.03 J 2.33 J 2.46 J ND ug/L 10/07/15 1.8 -- 50 3.16 J ND 6.56 J 22.0 J 3.14 J ND ug/L 04/20/16 2.2 -- 50 5.60 J ND 5.02 1 8.54 J 2.88 J ND ug/L 09/26/16 2.2 -- 50 ND ND 3.54 J 3.34 J 6.44 J ND ug/L 04/28/17 2.2 -- 50 ND ND 6.02 J 2.83 J 2.62 J ND ug/L 10/17/17 2.2 -- 50 ND ND ND ND ND ND ug/L 04/16/18 2.2 -- 50 ND ND ND ND ND ND ug/L 10/18/18 2.2 10 -- ND ND ND ND ND ND ug/L 04/12/19 2.2 10 -- ND ND ND ND ND ND ug/L 10/08/19 2.2 10 -- ND ND ND ND 2.40 J ND ug/L 04/20/20 2.2 10 -- 36.8 ND 3.71 J ND ND ND ug/L 10/15/20 2.2 10 -- ND ND 3.50 J ND ND ND ug/L 04/29/21 2.2 10 -- ND ND ND ND ND ND ug/L 10/14/21 2.2 10 -- ND ND ND ND ND ND ug/L 04/21/22 2.2 10 -- ND ND ND ND ND ND %% I) GOLDER 5 of 12 August 2022 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Selenium ug/L 03/01/00 -- -- 20 ND ND ND ND ND ND SW Standards ug/L 09/01/00 -- -- 20 ND ND ND ND ND ND Acute = 5 ug/L ug/L 03/01/01 -- -- 20 ND ND ND ND ND ND Chronic = 5 ug/L ug/L 09/01/01 -- -- 20 ND ND ND ND ND ND ug/L 03/01/02 -- -- 20 ND ND ND ND ND ND ug/L 09/01/02 -- -- 20 ND ND ND ND ND ND ug/L 04/01/03 -- -- 20 ND ND ND ND ND ND ug/L 10/01/03 -- -- 20 ND ND ND ND ND ND ug/L 03/01/04 -- -- 20 ND ND ND ND ND ND ug/L 09/01/04 -- -- 20 ND ND ND ND ND ND ug/L 05/01/05 -- -- 20 ND ND ND ND ND ND ug/L 10/01/05 -- -- 20 ND ND ND ND ND ND ug/L 04/01/06 -- -- 20 ND ND ND ND ND ND ug/L 10/01/06 -- -- 20 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND 2.9 J ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND ND ND ND ug/L 12/04/08 2.7 -- 10 -- ND ND ND ND ND ug/L 04/13/09 3.4 -- 10 -- ND ND ND ND ND ug/L 10/20/09 2.7 -- 10 ND ND ND ND ND ND ug/L 04/30/10 0.83 -- 10 -- 1.72 J 0.9 1 0.974 J 1.23 J ND ug/L 10/11/10 0.83 -- 10 -- 0.83 0.83 0.83 0.875 J ND ug/L 05/12/11 0.83 -- 10 ND ND ND 1.16 J 0.926 J ND ug/L 10/07/11 4.15 -- 10 ND ND ND 1.03 J 1.16 J ND ug/L 04/19/12 0.83 -- 10 ND ND ND ND ND ND ug/L 10/26/12 0.83 -- 10 ND ND ND ND ND ND ug/L 04/25/13 0.83 -- 10 ND ND ND ND ND ND ug/L 09/12/13 0.91 -- 10 ND ND ND ND ND ND ug/L 04/25/14 0.91 -- 10 ND ND ND ND ND ND ug/L 10/02/14 0.91 -- 10 ND ND ND ND ND ND ug/L 04/06/15 0.91 -- 10 ND ND ND ND ND ND ug/L 10/07/15 0.91 -- 10 ND ND ND ND ND ND ug/L 04/20/16 0.91 -- 10 ND ND ND ND ND ND ug/L 09/26/16 0.91 -- 10 ND ND ND ND ND ND ug/L 04/28/17 6.2 -- 10 ND ND ND ND ND ND ug/L 10/17/17 6.2 -- 10 ND ND ND ND ND ND ug/L 04/16/18 6.2 -- 10 ND ND ND ND ND ND ug/L 10/18/18 6.2 10 -- ND ND ND ND ND ND ug/L 04/12/19 6.2 10 -- ND ND ND ND ND ND ug/L 10/08/19 6.2 10 -- ND ND ND ND ND ND ug/L 04/20/20 6.2 10 -- ND ND ND ND ND ND ug/L 10/15/20 6.2 10 -- ND ND ND ND ND ND ug/L 04/29/21 6.2 10 -- ND ND ND ND ND ND ug/L 10/14/21 6.2 10 -- ND ND ND ND ND ND ug/L 04/21/22 6.2 10 -- ND ND ND ND ND ND Silver ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND SW-1 = 4.15 ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-2 = 3.38 ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND SW-3 = 2.63 ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND SW-4 = 5.95 ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND SW-5 = 4.28 ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND SW-1 = 0.06 ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND SW-2 = 0.06 ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND SW-3 = 0.06 ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND SW-4 = 0.06 ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND SW-5 = 0.06 ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND 2.20 J ND 2.40 J ND ug/L 12/04/08 1.9 -- 10 -- ND ND ND 2.80 J ND ug/L 04/13/09 1.0 -- 10 -- ND ND ND ND ND ug/L 10/20/09 1.9 -- 10 ND ND ND ND ND ND ug/L 04/30/10 1.9 -- 10 -- 2.22 J ND ND ND ND ug/L 10/11/10 1.9 -- 10 -- ND ND ND ND ND ug/L 05/12/11 1.9 -- 10 ND ND ND ND ND ND ug/L 10/07/11 1.9 -- 10 ND ND ND ND ND ND ug/L 04/19/12 1.9 -- 10 ND ND ND ND ND ND ug/L 10/26/12 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.9 -- 10 2.06 J ND 1.95 J 2.29 J 2.31 J ND ug/L 09/12/13 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/14 1.9 -- 10 ND ND ND ND ND ND ug/L 10/02/14 1.9 -- 10 ND ND ND ND ND ND ug/L 04/06/15 1.9 -- 10 ND ND ND ND ND ND ug/L 10/07/15 1.9 -- 10 ND ND 2.74 J ND 2.32 J ND ug/L 04/20/16 1.9 -- 10 ND ND ND ND ND ND ug/L 09/26/16 1.9 -- 10 ND ND ND ND ND ND ug/L 04/28/17 1.9 -- 10 ND ND ND ND ND ND ug/L 10/17/17 1.9 -- 10 ND ND ND ND ND ND ug/L 04/16/18 1.9 -- 10 ND ND ND ND ND ND ug/L 10/18/18 1.9 10 -- ND ND ND ND ND ND ug/L 04/12/19 1.9 10 -- ND ND ND ND ND ND ug/L 10/08/19 1.9 10 -- ND ND ND ND ND ND ug/L 04/20/20 1.9 10 -- ND ND ND ND ND ND ug/L 10/15/20 1.9 10 -- ND ND ND ND ND ND ug/L 04/29/21 1.9 10 -- ND ND ND ND ND ND ug/L 10/14/21 1.9 10 -- ND ND ND ND ND ND ug/L 04/21/22 1.9 10 -- ND ND ND ND ND ND %% I) GOLDER 6 of 12 August 2022 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Thallium ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND 12 ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 0.053 J 0.05 J 0.045 J 0.055 J 0.054 J ND ug/L 05/05/08 0.036 -- 5.5 -- ND ND ND ND ND ug/L 12/04/08 0.036 -- 5.5 -- ND ND ND ND ND ug/L 04/13/09 0.036 -- 5.5 -- ND ND ND ND ND ug/L 10/20/09 0.11 -- 5.5 0.11 0.11 0.11 0.11 0.11 ND ug/L 04/30/10 0.11 -- 5.5 -- ND ND ND ND ND ug/L 10/11/10 0.11 -- 5.5 -- ND ND ND ND ND ug/L 05/12/11 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/07/11 0.55 -- 5.5 ND ND ND ND ND ND ug/L 04/19/12 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/26/12 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/25/13 0.11 -- 5.5 ND ND ND ND ND ND ug/L 09/12/13 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/25/14 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/02/14 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/06/15 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/07/15 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/20/16 0.11 -- 5.5 ND ND ND ND ND ND ug/L 09/26/16 0.11 -- 5.5 0.190 J 0.124 J 0.205 J 0.187 J 0.316 J ND ug/L 04/28/17 0.11 -- 5.5 0.389 J 0.267 J 0.261 J 0.287 J 0.205 J ND ug/L 10/17/17 0.11 -- 5.5 0.819 J 0.655 J 0.698 1 0.840 J 0.425 J ND ug/L 04/16/18 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/18/18 0.55 5.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.22 2.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.22 2.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.22 2.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.22 2.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.22 2.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.22 2.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.22 2.0 -- ND ND ND ND ND ND Vanadium ug/L 03/01/00 -- -- 40 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 40 ND ND ND ND ND ND ug/L 03/01/01 -- -- 40 ND ND ND ND ND ND ug/L 09/01/01 -- -- 40 ND ND ND ND ND ND ug/L 03/01/02 -- -- 40 ND ND ND ND ND ND ug/L 09/01/02 -- -- 40 ND 44 ND ND ND ND ug/L 04/01/03 -- -- 40 ND ND ND ND ND ND ug/L 10/01/03 -- -- 40 ND ND ND ND ND ND ug/L 03/01/04 -- -- 40 ND ND ND ND ND ND ug/L 09/01/04 -- -- 40 ND ND ND ND ND ND ug/L 05/01/05 -- -- 40 ND ND ND ND ND ND ug/L 10/01/05 -- -- 40 ND ND ND ND ND ND ug/L 04/01/06 -- -- 40 ND ND ND ND ND ND ug/L 10/01/06 -- -- 40 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 7.1 J ND ND 1.5 J 1.2 J ND ug/L 05/05/08 1 -- 25 -- ND ND 9.3 J 2.4 J ND ug/L 12/04/08 1.4 -- 25 -- ND ND ND 2.5 J ND ug/L 04/13/09 0.7 -- 25 -- 4.2 J 2.1 1 2.5 J 2.6 J ND ug/L 10/20/09 1.4 -- 25 10.7 J 2.19 J 1.81 1 2.79 J 1.86 J ND ug/L 04/30/10 1.4 -- 25 -- ND ND ND 3.45 J ND ug/L 10/11/10 1.4 -- 25 -- 8.27 J 3.03 J 2.55 J 2.02 J ND ug/L 05/12/11 1.4 -- 25 8.52 J 1.90 J 2.35 J 2.27 J 2.42 J ND ug/L 10/07/11 1.4 -- 25 11.9 J 21.0 J 2.27 J 6.55 J 1.66 J ND ug/L 04/19/12 1.4 -- 25 2.33 J ND 1.48 J 1.60 J 1.44 J ND ug/L 10/26/12 1.4 -- 25 ND ND ND ND ND ND ug/L 04/25/13 1.4 -- 25 2.31 J 5.99 J ND ND ND ND ug/L 09/12/13 1.4 -- 25 2.11 J ND 1.70 J 1.53 J ND ND ug/L 04/25/14 1.4 -- 25 17.9 J ND 4.7 J 2.25 J 1.60 J ND ug/L 10/02/14 1.4 -- 25 42.2 ND 3.14 J 2.66 J 2.26 J ND ug/L 04/06/15 1.4 -- 25 2.34 J ND 3.33 J ND 4.62 J ND ug/L 10/07/15 1.4 -- 25 18.2 J 2.91 J 3.69 J 61.8 3.05 J ND ug/L 04/20/16 1.4 -- 25 26.9 ND 12.0 1 2.13 J 3.04 J ND ug/L 09/26/16 1.4 -- 25 1.95 J ND ND 1.64 J 4.58 J ND ug/L 04/28/17 1.4 -- 25 2.61 J 1.66 J 8.36 J 2.35 J 2.36 J ND ug/L 10/17/17 1.4 -- 25 2.42 J ND 7.92 J 3.42 J 2.88 J ND ug/L 04/16/18 1.4 -- 25 2.33 J 2.14 J 2.45 J 2.94 J 3.67 J ND ug/L 10/18/18 1.4 10 -- 1.88 J 2.26 J 1.51 J 1.61 J 1.70 J ND ug/L 04/12/19 1.4 10 -- 1.54 J 4.16 J 2.39 J 1.78 J 2.09 J ND ug/L 10/08/19 1.4 10 -- 2.45 J ND 2.33 J 1.96 J 1.78 J ND ug/L 04/20/20 1.4 10 -- 1.75 J ND 2.28 J 2.49 J 1.85 J ND ug/L 10/15/20 1.4 10 -- ND ND ND ND ND ND ug/L 04/29/21 1.4 10 -- ND ND ND ND ND ND ug/L 10/14/21 1.4 10 -- ND ND ND ND ND ND ug/L 04/21/22 1.4 10 -- ND ND ND ND ND ND %% I) GOLDER 7 of 12 August 2022 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Zinc ug/L 03/01/00 -- -- 50 ND ND 31 58 68 ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 50 ND ND 130 50 60 ND SW-1 = 132.88 ug/L 03/01/01 -- -- 50 ND ND 68 ND 56 ND SW-2 = 120.15 ug/L 09/01/01 -- -- 50 120 ND 60 ND 50 ND SW-3 = 106.16 ug/L 03/01/02 -- -- 50 ND ND 70 50 60 ND SW-4 = 158.66 ug/L 09/01/02 -- -- 50 ND 180 80 ND ND ND SW-5 = 134.82 ug/L 04/01/03 -- -- 50 ND ND ND ND 50 ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 50 ND ND 120 50 50 ND SW-1 = 133.97 ug/L 03/01/04 -- -- 50 ND ND 52 ND ND ND SW-2 = 121.14 ug/L 09/01/04 -- -- 50 58 ND 56 ND 59 ND SW-3 = 107.03 ug/L 05/01/05 -- -- 50 ND ND ND ND ND ND SW-4 = 159.96 ug/L 10/01/05 -- -- 50 ND ND ND ND ND ND SW-5 = 135.92 ug/L 04/01/06 -- -- 50 ND ND 51.6 ND ND ND ug/L 10/01/06 -- -- 50 ND ND 60.9 ND ND ND ug/L 04/10/07 -- -- -- 7.6 J 23.5 48.4 38.2 39.5 ND ug/L 09/25/07 -- -- -- 84.9 11.4 60.4 36.4 45.7 ND ug/L 05/05/08 1.0 -- 10 -- 5.8 J 6.4 J 154 20.4 ND ug/L 12/04/08 3.8 -- 10 -- 22.4 47.9 35.3 34.6 ND ug/L 04/13/09 3.4 -- 10 -- 24.9 21.4 25.8 27.2 ND ug/L 10/20/09 3.8 -- 10 70.0 7.62 J 45.2 30.9 33.2 ND ug/L 04/30/10 3.8 -- 10 -- 6.64 J 48.1 34.0 54.2 ND ug/L 10/11/10 3.8 -- 10 -- 32.0 30.1 22.8 22.9 ND ug/L 05/12/11 3.8 -- 10 76.2 10.1 33.5 27.7 36.9 ND ug/L 10/07/11 3.8 -- 10 102 62.1 45.0 60.5 32.1 ND ug/L 04/19/12 3.8 -- 10 5.98 J ND 32.0 21.6 22.9 ND ug/L 10/26/12 3.8 -- 10 12.3 5.81 J 25.3 20.3 22.0 ND ug/L 04/25/13 3.8 -- 10 15.0 25.8 42.6 31.6 33.1 ND ug/L 09/12/13 3.8 -- 10 9.73 J ND 29.8 14.9 17.1 ND ug/L 04/25/14 3.8 -- 10 66.3 7.92 J 63.3 37.2 33.7 ND ug/L 10/02/14 3.8 -- 10 144 3.94 J 63.6 34.9 34.0 ND ug/L 04/06/15 3.8 -- 10 16.4 5.33 J 57.3 30.0 51.6 ND ug/L 10/07/15 3.8 -- 10 117 7.88 J 25.2 1020 24.5 ND ug/L 04/20/16 4.4 -- 10 111 ND 95.5 31.5 44.7 ND ug/L 09/26/16 4.4 -- 10 5.08 J 5.21 J 20 16.4 27.7 ND ug/L 04/28/17 4.4 -- 10 11.0 6.98 J 64.8 21.1 20.1 ND ug/L 10/17/17 4.4 -- 10 8.83 J ND 32.5 5.72 J ND ND ug/L 04/16/18 4.4 -- 10 11.4 10.6 10.3 16.3 15.7 ND ug/L 10/18/18 4.4 10 -- 12.9 12.2 11.8 17.5 18.4 ND ug/L 04/12/19 4.4 10 -- 11.6 16.2 13.9 12.1 15.6 ND ug/L 10/08/19 4.4 10 -- 7.17 J ND 6.31 J 6.76 J 7.48 J ND ug/L 04/20/20 4.4 10 -- 27.1 ND 13.6 13.3 10.1 ND ug/L 10/15/20 4.4 10 -- 6.40 J ND 14.5 10.3 11.7 ND ug/L 04/29/21 4.4 10 -- 6.18 J ND 4.48 J 5.98 J 6.52 J ND ug/L 10/14/21 4.4 10 -- 4.54 J ND 4.77 J 10.5 7.25 J ND ug/L 04/21/22 4.4 10 -- 6.67 J 6.19 J 7.15 J 14.6 21.0 ND Acetone ug/L 03/01/00 -- -- 100 ND ND ND ND ND -- SW Standard = 2000 ug/L ug/L 09/01/00 -- -- 100 ND ND ND ND ND ND ug/L 03/01/01 -- -- 100 ND ND ND ND ND ND ug/L 09/01/01 -- -- 100 ND ND ND ND ND ND ug/L 03/01/02 -- -- 100 ND ND ND ND ND ND ug/L 09/01/02 -- -- 100 ND ND ND ND ND ND ug/L 04/01/03 -- -- 100 ND ND ND ND ND ND ug/L 10/01/03 -- -- 100 ND ND ND ND ND ND ug/L 03/01/04 -- -- 100 ND ND ND ND ND ND ug/L 09/01/04 -- -- 100 ND ND ND ND ND ND ug/L 05/01/05 -- -- 100 ND ND ND ND ND ND ug/L 10/01/05 -- -- 100 ND ND ND ND ND ND ug/L 04/01/06 -- -- 100 ND ND ND ND ND ND ug/L 10/01/06 -- -- 100 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND 5.3 J 68 J 1.7 J 6.3 J ND ug/L 05/05/08 0.62 -- 100 -- ND ND ND ND ND ug/L 12/04/08 1.5 -- 100 -- 7.9 J 9.1 J 7.6 J 7.8 J ND ug/L 04/13/09 1.5 -- 100 -- ND ND ND ND ND ug/L 10/20/09 1.5 -- 100 ND ND 6.0 J ND 6.2 J ND ug/L 04/30/10 1.5 -- 100 -- 3.0 J 3.5 J 4.6 J 4.1 J ND ug/L 10/11/10 1.5 -- 100 -- ND ND ND ND ND ug/L 05/12/11 1.2 -- 100 9.7 J 7.5 J ND ND ND ND ug/L 10/07/11 1.2 -- 100 ND ND ND ND ND ND ug/L 04/19/12 1.2 -- 100 ND ND ND ND ND ND ug/L 10/26/12 1.2 -- 100 ND 4.4 J ND ND ND ND ug/L 04/25/13 0.96 -- 100 1.0 J 1.0 J ND ND 1.6 J ND ug/L 09/12/13 1.2 -- 100 ND ND ND ND ND ND ug/L 04/25/14 1.2 -- 100 ND ND ND ND ND ND ug/L 10/02/14 1.2 -- 100 ND ND ND ND ND ND ug/L 04/06/15 1.2 -- 100 ND ND ND ND ND ND ug/L 10/07/15 1.2 -- 100 ND ND ND ND ND ND ug/L 04/20/16 1.2 -- 100 ND ND ND ND ND ND ug/L 09/26/16 10 -- 100 ND 11 J ND ND 11 J ND ug/L 04/28/17 10 -- 100 23 B 19 B 19 B 36 B 16 B 33 J ug/L 10/17/17 10 -- 100 ND ND ND ND ND ND ug/L 04/16/18 10 -- 100 ND ND ND ND ND ND ug/L 10/18/18 10 20 -- ND ND ND ND ND ND ug/L 04/12/19 10 20 -- ND ND ND ND ND ND ug/L 10/08/19 10 20 -- ND ND ND ND ND ND ug/L 04/20/20 10 20 -- ND ND ND ND ND ND ug/L 10/15/20 10 20 -- ND ND ND ND ND ND ug/L 04/29/21 10 20 -- ND ND ND ND ND ND ug/L 10/14/21 10 20 -- ND ND ND ND ND 26 ug/L 04/21/22 10 20 -- ND ND ND ND ND ND %% I) GOLDER 8 of 12 August 2022 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date 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 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 0.16 0.16 2.5 J 0.69 J 0.6 J ND ug/L 09/25/07 -- -- -- 0.37 J ND 8.4 1.2 J 1.2 J ND ug/L 05/05/08 0.2 -- 5 -- ND ND ND ND ND ug/L 12/04/08 0.2 -- 5 -- 0.2 0.58 J 0.2 0.2 ND ug/L 04/13/09 0.2 -- 5 -- ND ND ND ND ND ug/L 10/20/09 0.2 -- 5 ND ND 2.4 1 2.1 J 1.3 J ND ug/L 04/30/10 0.083 -- 5 -- ND 1.8 J ND ND ND ug/L 10/11/10 0.2 -- 5 -- 0.2 7.4 2.0 J 2.0 J ND ug/L 05/12/11 0.7 -- 5 ND ND ND J ND ND ND ug/L 10/07/11 0.7 -- 5 ND ND 2.4 J 0.92 J 1.1 J ND ug/L 04/19/12 0.18 -- 5 ND ND 1.0 J 0.45 J ND ND ug/L 10/26/12 0.18 -- 5 ND ND 1.2 J ND ND ND ug/L 04/25/13 0.25 -- 5 ND ND 0.51 J ND ND ND ug/L 09/12/13 0.18 -- 5 ND ND 1.8 J 0.76 J 0.76 J ND ug/L 04/25/14 0.18 -- 5 1.6 J ND 1.7 J 0.46 J 0.58 J ND ug/L 10/02/14 0.18 -- 5 1.2 J ND 0.95 J 1.0 J ND ND ug/L 04/06/15 0.18 -- 5 ND ND 0.49 J ND ND ND ug/L 10/07/15 0.18 -- 5 ND ND 2.4 J 0.92 J 1.0 J ND ug/L 04/20/16 0.18 -- 5 ND ND ND ND ND ND ug/L 09/26/16 0.18 -- 5 ND ND 1.6 J ND ND ND ug/L 04/28/17 0.18 -- 5 ND ND ND ND ND ND ug/L 10/17/17 0.18 -- 5 ND ND ND ND ND ND ug/L 04/16/18 0.18 -- 5 ND ND ND ND ND ND ug/L 10/18/18 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.18 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.18 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.18 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.18 1.0 -- ND ND ND ND ND ND Dibromochloromethane ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND No SW Standard ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 0.54 J ND ND ND ug/L 09/25/07 -- -- -- ND ND 2.8 J ND ND ND ug/L 05/05/08 0.28 -- 3 -- ND ND ND ND ND ug/L 12/04/08 0.32 -- 3 -- ND ND ND ND ND ug/L 04/13/09 0.32 -- 3 -- ND ND ND ND ND ug/L 10/20/09 0.32 -- 3 ND ND ND ND ND ND ug/L 04/30/10 0.067 -- 3 -- ND ND ND ND ND ug/L 10/11/10 0.32 -- 3 -- 0.32 6.6 1.2 J 4.6 ND ug/L 05/12/11 0.63 -- 3 ND ND ND ND ND ND ug/L 10/07/11 0.63 -- 3 ND ND ND ND ND ND ug/L 04/19/12 0.17 -- 3 ND ND ND ND ND ND ug/L 10/26/12 0.17 -- 3 ND ND ND ND ND ND ug/L 04/25/13 0.49 -- 3 ND ND ND ND ND ND ug/L 09/12/13 0.17 -- 3 ND ND ND ND ND ND ug/L 04/25/14 0.17 -- 3 ND ND ND ND ND ND ug/L 10/02/14 0.17 -- 3 ND ND ND ND ND ND ug/L 04/06/15 0.17 -- 3 ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 3 ND ND ND ND ND ND ug/L 04/20/16 0.17 -- 3 ND ND ND ND ND ND ug/L 09/26/16 0.17 -- 3 ND ND ND ND ND ND ug/L 04/28/17 0.17 -- 3 ND ND ND ND ND ND ug/L 10/17/17 0.17 -- 3 ND ND ND ND ND ND ug/L 04/16/18 0.17 -- 3 ND ND ND ND ND ND ug/L 10/18/18 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.17 1.0 -- ND ND ND ND ND ND %% I) GOLDER 9 of 12 August 2022 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 1,4-Dichlorobenzene 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 05/05/08 0.2 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.38 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.38 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.38 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.1 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.79 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.79 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.19 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.19 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.14 -- 1 ND ND 0.46 J ND 0.19 J ND ug/L 09/12/13 0.19 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.19 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.19 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.19 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.19 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.19 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.19 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.19 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.19 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.19 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.19 1.0 -- ND ND ND ND ND ND Chloromethane ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.23 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.34 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.34 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.34 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.05 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.34 -- 1 -- 0.82 B 0.34 0.34 B 0.62 B 0.43 J ug/L 05/12/11 0.55 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.55 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.13 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.13 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.44 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.13 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.13 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.13 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.13 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.13 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.13 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.13 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.13 -- 1 0.42 J ND ND 0.78 J 0.41 J ND ug/L 10/17/17 0.13 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.13 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.13 1.0 -- ND ND ND ND ND ND 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 ug/L 10/14/21 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.13 1.0 -- ND ND ND ND ND ND %% I) GOLDER 10 of 12 August 2022 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Methylene Chloride ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.24 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.53 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.53 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.53 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.07 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.53 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.14 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.14 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.23 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.23 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.5 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.23 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.23 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.23 -- 1 ND ND ND ND 0.77 J ND ug/L 04/06/15 0.23 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.23 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.23 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.23 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.23 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.23 1.0 -- ND ND ND ND ND 0.73 J ug/L 10/08/19 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.23 1.0 -- ND ND ND ND ND ND Trichloroethene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND Human Health = 30 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.25 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.38 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.38 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.38 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.13 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.72 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.72 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.15 -- 1 ND ND 0.69 J ND ND ND ug/L 10/26/12 0.15 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.23 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.15 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.15 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.15 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.15 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.15 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.15 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.15 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.15 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.15 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.15 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ND ND ND ND 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 ug/L 10/14/21 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/21/22 0.15 1.0 -- ND ND ND ND ND ND %% I) GOLDER 11 of 12 August 2022 TABLE 6 19131339.105 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Xylenes (Total) ug/L 09/25/07 -- -- ND ND ND ND ND ND ug/L 05/05/08 0.67 5 -- ND ND ND ND -- ug/L 12/04/08 0.4 5 -- ND ND ND ND -- ug/L 04/13/09 0.4 5 -- ND ND ND ND -- ug/L 10/20/09 0.4 5 ND ND ND ND ND ND ug/L 04/30/10 0.22 5 -- ND ND ND ND -- ug/L 10/11/10 0.4 5 -- ND ND ND ND ND ug/L 05/12/11 2.1 5 ND ND ND ND ND -- ug/L 10/07/11 2.1 5 ND ND ND ND ND -- ug/L 04/19/12 0.45 5 ND ND ND ND ND -- ug/L 10/26/12 0.45 5 ND ND ND ND ND -- ug/L 04/25/13 0.67 5 ND ND ND ND ND -- ug/L 09/12/13 0.45 5 ND ND ND ND ND -- ug/L 04/25/14 0.45 5 ND ND ND ND ND -- ug/L 10/02/14 0.45 5 ND ND ND ND ND -- ug/L 04/06/15 0.45 5 ND ND ND ND ND -- ug/L 10/07/15 0.45 5 ND ND ND ND ND -- ug/L 04/20/16 0.45 5 ND ND ND ND ND -- ug/L 09/26/16 0.45 5 ND ND ND ND ND -- ug/L 04/28/17 0.45 5 ND ND ND ND ND ND ug/L 10/17/17 0.45 5 ND ND ND ND ND ND ug/L 04/16/18 0.45 5 ND ND ND ND ND ND ug/L 10/18/18 0.45 3 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 ug/L 10/14/21 0.45 3.0 -- ND ND ND ND ND ND ug/L 04/21/22 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 ug/L 10/14/21 0.80 2.0 -- ND 1.4 J ND 0.92 J 1.2 J ND ug/L 04/21/22 0.80 2.0 -- ND 1.7 J ND ND ND 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 = are estimated values between MDL and PQL. The following dilutions were noted for the April 2022 event: Antimony & Thallium by 2x (all points). 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 %% I) GOLDER 12 of 12 August 2022 19131339.105 IEll :14:WA Summary of Surface Water Field Parameters Detected Constituents White Street Landfill - Phase I, 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 7.54 6.86 -- -- S. U. 03/27/00 8.06 8.15 7.89 8.19 8.02 S. U. 09/13/00 7.56 7.31 ND 7.25 7.06 S. U. 03/12/01 7.51 7.29 7.29 7.24 7.18 S. U. 09/13/01 7.51 7.51 7.22 7.24 7.18 S. U. 03/07/02 7.20 7.26 7.04 7.20 6.80 S. U. 09/18/02 7.43 7.33 -- 7.36 6.97 S. U. 04/15/03 7.87 7.60 7.61 7.50 7.62 S. U. 10/15/03 7.26 6.80 6.98 7.15 6.99 S. U. 03/24/04 9.50 8.80 8.99 8.63 8.63 S. U. 09/22/04 7.76 7.26 7.61 7.61 7.63 S. U. 05/10/05 9.56 9.41 9.36 9.45 9.28 S. U. 10/11 /05 7.37 7.07 7.19 7.17 7.35 S. U. 04/24/06 7.11 6.99 6.86 7.20 7.38 S. U. 10/16/06 -- -- -- -- -- S. U. 04/10/07 6.24 6.64 6.55 7.02 7.16 S. U. 09/25/07 6.81 7.28 6.28 7.36 7.20 S. U. 05/02/08 -- -- -- -- -- S. U. 12/05/08 -- 7.82 7.56 7.85 7.98 S. U. 04/16/09 -- 8.01 8.13 7.89 7.89 S. U. 10/07/09 -- -- -- -- -- S. U. 04/28/10 -- -- -- -- -- S. U. 10/05/10 -- 8.05 7.65 8.05 7.81 S. U. 05/10/11 7.74 7.74 7.71 7.64 7.54 S. U. 10/06/11 7.21 7.26 6.90 7.22 7.70 S. U. 04/16/12 -- -- -- -- -- S. U. 10/24/12 -- -- -- -- -- S. U. 04/24/13 6.97 7.24 6.92 7.16 7.63 S. U. 09/09/13 7.68 8.30 7.59 7.76 7.69 S. U. 04/22/14 7.54 7.29 7.30 7.37 7.02 S. U. 10/01 /14 8.03 8.03 7.88 7.72 7.84 S. U. 04/07/15 8.13 7.77 7.59 7.84 7.79 S. U. 10/06/15 7.27 7.37 7.34 7.62 7.19 S. U. 04/18/16 7.57 7.68 7.56 7.29 7.39 S. U. 09/26/16 7.22 6.75 7.21 7.30 7.34 S. U. 04/25/17 7.41 7.40 7.14 7.28 7.22 S. U. 10/16/17 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. 04/29/21 7.57 7.46 7.44 7.46 7.44 S. U. 10/14/21 6.33 7.22 7.19 7.62 7.30 S. U. 04/19/22 7.71 7.52 7.53 7.55 7.21 Specific Conductance (Field) US/cm 03/25/99 347 155 309 -- -- US/cm 09/23/99 811 123 487 -- -- US/cm 03/27/00 417 186 363 318 315 US/cm 09/13/00 303 233 ND 471 438 US/cm 03/12/01 6919 6145 6145 6393 5960 us/cm 09/13/01 6919 7324 6063 6393 5960 us/cm 03/07/02 420 377 577 561 555 US/cm 09/18/02 248 271 -- 449 469 US/cm 04/15/03 74 254 261 345 325 US/cm 10/15/03 215 256 357 334 340 US/cm 03/24/04 293 253 410 378 379 us/cm 09/22/04 242 223 234 424 1 US/cm 05/10/05 283 271 391 387 390 US/cm 10/11/05 167 215 319 264 269 US/cm 04/24/06 195 182 335 286 404 US/cm 10/16/06 -- -- -- -- -- US/cm 04/10/07 31.9 28.9 43.6 42.9 43.5 US/cm 09/25/07 31.0 13.0 57.0 53.0 54.0 us/cm 05/02/08 -- -- -- -- -- us/cm 12/05/08 -- 31.6 32.6 31.1 29.1 US/cm 04/16/09 -- 19.8 23.8 26.5 24.9 US/cm 10/07/09 -- -- -- -- -- US/cm 04/28/10 -- -- -- -- -- US/cm 10/05/10 -- 27.9 54 38.9 35.7 us/cm 05/10/11 256 209 345 412 405 US/cm 10/06/11 309 218 529 462 446 US/cm 04/16/12 -- -- -- -- -- US/cm 10/24/12 -- -- -- -- -- US/cm 04/24/13 237 242 381 362 380 US/cm 09/09/13 327 266 461 439 448 US/cm 04/22/14 337 275 430 375 420 us/cm 10/01/14 276 228 454 444 441 us/cm 04/07/15 318 255 400 378 423 US/cm 10/06/15 229 151 337 299 284 US/cm 04/18/16 254 183 313 307 300 US/cm 09/26/16 293 214 439 412 427 US/cm 04/25/17 211 198 318 272 1272 US/cm 10/16/17 209 171 211 241 263 US/cm 04/16/18 233 215 234 217 227 us/cm 10/18/18 191 264 159 209 254 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 04/29/21 251 208 228 259 252 us/cm 10/14/21 201 216 260 221 212 US/cm 04/19/22 262 204 202 225 244 11 1) GOLDER 1of2 August 2022 19131339.105 Ir_1--14:WA Summary of Surface Water Field Parameters Detected Constituents White Street Landfill - Phase I, 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 Temperature (Field) °C 03/25/99 11.81 11.22 13.86 -- -- °C 09/23/99 18.45 17.18 21.83 -- -- °C 03/27/00 14.85 15.73 17.17 15.53 14.29 °C 09/13/00 25.27 23.45 -- 24.96 25.53 °C 03/ 12/01 14.86 16.71 16.71 15.51 16.52 °C 09/ 13/01 14.86 16.65 16.74 15.51 16.52 °C 03/07/02 12.12 13.02 16.45 14.40 13.20 °C 09/ 18/02 18.66 16.70 -- 19.05 18.96 °C 04/15/03 21.65 22.24 20.92 20.11 17.23 °C 10/15/03 17.39 18.39 20.06 18.45 20.33 °C 03/24/04 16.00 18.06 17.17 15.83 17.22 °C 09/22/04 22.67 21.95 25.28 24.17 22.95 °C 05/10/05 24.09 22.85 23.97 23.69 21.78 °C 10/11/05 18.60 18.30 20.60 20.00 19.80 °C 04/24/06 18.30 16.26 18.47 19.05 22.24 °C 10/ 16/06 -- -- -- -- -- °C 04/10/07 10.55 8.05 12.20 14.82 13.49 °C 09/25/07 17.06 21.61 23.84 18.61 19.48 °C 05/02/08 -- -- -- -- -- °C 12/05/08 -- 7.00 11.30 9.50 8.80 °C 04/16/09 -- 12.20 14.30 14.50 13.20 °C 10/07/09 -- -- -- -- -- °C 04/28/ 10 -- -- -- -- -- °C 10/05/ 10 -- -- -- -- -- °C 05/ 10/ 11 19.10 17.50 19.30 19.40 19.50 °C 10/06/11 16.16 13.10 19.10 17.80 18.67 °C 04/ 16/ 12 -- -- -- -- -- °C 10/24/ 12 -- -- -- -- -- °C 04/24/ 13 16.35 14.24 17.40 16.28 16.20 °C 09/09/13 24.70 22.80 25.50 24.80 25.00 °C 04/22/ 14 15.70 12.90 16.80 17.70 15.30 °C 10/01/14 19.33 19.21 21.28 19.92 22.08 °C 04/07/ 15 17.50 16.70 18.50 17.90 16.00 °C 10/06/15 18.76 17.11 21.82 20.90 19.20 °C 04/ 18/ 16 18.85 18.38 19.83 19.23 18.57 °C 09/26/16 21.60 20.60 23.80 22.50 22.60 °C 04/25/17 21.17 19.60 20.20 20.56 10.05 °C 10/16/17 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 04/08/19 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 04/29/21 21.3 19.9 17.6 20.5 20.7 °C 10/14/21 20.4 18.7 7.9 19.2 19.8 °C 04/19/22 15.1 12.9 14.7 13.5 13.4 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 04/29/21 4.18 4.83 30.4 6.19 6.23 NTU 10/14/21 3.74 7.52 10.1 4.25 7.15 NTU 04/19/22 8.13 6.75 6.57 9.35 9.18 Oxidation Reduction Potential (field) my 04/25/17 69.8 50.6 72.3 79.4 77.3 my 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 04/29/21 115.3 -32.8 236.6 154.1 141.1 mV 10/14/21 301.3 -13.1 231.6 171.2 132.2 mV 04/19/22 127.2 45.0 90.0 172.8 148.8 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 04/16/18 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 04/08/19 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 mg/L 04/29/21 7.34 8.91 7.60 8.04 6.56 mg/L 10/12/21 7.21 8.24 9.31 8.35 6.82 mg/L 04/19/22 7.18 9.70 9.34 8.35 7.35 Notes: S.U. = Standard Units NTU = Nephelometric Turbidity Units uS/cm = microsiemens per centimeter mg/L = milligramer per liter -- = no data available Data prior to April 2017 provided by S&ME Engineering NV 1) GOLDEP 2of2 August2022 19131339.105 FIGURES %%%I) GOLDER LEGEND o, 0 v 0 rn cm _M M E Z N ii SW-3 LOCATED —1600 FT. WEST —4yVV r I . VVCO I -1100 SW-2 LOCATED -500 FT. WEST //0 I I �- 697.14 L6� i El , �M - Q -681MSW LANDFILL �687.1.8 .85, — -� --0Il LIMITS OF WASTE 680 4687.43 �_ 683.82 S ���� -2� S -3 / .686.24 685.93 - 1 4010 -7� 687.82 � 684.51 6II-7 85.65 - li II- A o 700.32 699.30 687.80 / o I SW-4 LOCATED 900 FT. EAST CLIENT CITY OF GREENSBORO CONSULTANT 1-5, ' '16.71 �.120 YYYY—MM—DD 2022-05-20 DESIGNED XX% GOLDER PREPARED REVIEWED GOLDER ASSOCIATES NC, INC JWS SIB DYR APPROVED RPK O O 700— �-1 NM APPROXIMATE PROPERTY LINE. APPROXIMATE LIMITS OF WASTE EX. TOPOGRAPHIC CONTOURS (2 FT. INTERVALS) SURFACE WATER MONITORING POINT COMPLIANCE GROUNDWATER MONITORING WELL NES / SENTINEL GROUNDWATER MONITORING WELL NONCOMPLIANCE GROUNDWATER MONITORING WELL LEACHATE SAMPLING LOCATION GROUNDWATER SURFACE CONTOUR APPROXIMATE GROUNDWATER FLOW SEGMENT USED TO CALCULATE GRADIENT NOT MEASURED NOTES 1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET. 2. GROUNDWATER SURFACE CONTOUR INTERVAL = 10 FEET. 3. GROUNDWATER ELEVATIONS MEASURED ON APRIL 19, 2022. 4. GROUNDWATER CONTOURS ARE BASED ON LINEAR INTERPOLATION BETWEEN AND EXTRAPOLATION FROM KNOWN DATA, TOPOGRAPHIC CONTOURS, AND KNOWN FIELD CONDITIONS. THEREFORE, GROUNDWATER CONTOURS MAY NOT REFLECT ACTUAL GROUNDWATER CONDITIONS. 5. GROUNDWATER CONTOUR LINES SHOW THE WATER TABLE SHAPE AND ELEVATION THESE CONTOURS ARE INFERRED LINES FOLLOWING THE GROUNDWATER SURFACE AT A CONSTANT ELEVATION ABOVE SEA LEVEL. THE GROUNDWATER FLOW DIRECTION IS GENERALLY PERPENDICULAR TO THE GROUNDWATER SURFACE CONTOURS, SIMILAR TO THE RELATIONSHIP BETWEEN SURFACE WATER FLOW AND TOPOGRAPHIC CONTOURS. 6. ELEVATIONS SHOWN IN THIS DRAWING ARE IN FEET ABOVE MEAN SEA LEVEL DATUM ("MEAN SEA LEVEL DATUM" REFERS TO THE NATIONAL GEOTETIC VERTICAL DATUM (NGVD) OF 1929) AND COORDINATES ARE EXPRESSED IN TERMS OF THE STATE PLANE COORDINATE SYSTEM. 7. SURFACE WATER LOCATIONS ARE APPROXIMATE 8. TOPOGRAPHY PROVIDED BY BRADY SURVEYING CO. FROM AERIAL PHOTOGRAPHY DATED NOVEMBER 9, 1994. TOPOGRAPHY IN VICINITY OF PHASE II AND III LANDFILLS UPDATED BASED ON AERIAL SURVEY DATED JUNE 1, 2020, PROVIDED BY CARTOGRAPHIC AERIAL MAPPING, INC. 9. 7.5 MINUTE USGS QUADRANGLE, MCLEANSVILLE, NORTH CAROLINA, 2016. RD DO Aso w �" ►�7fITE ST � A 0 a '"' D* 1 r► I f 0 1 a I(EELr RU ,. a W � Q :T0�'D O HU NE MILL It SITE LOCATION MAP NOT TO SCALE 0 400 800 1" = 400' FEET PROJECT WHITE STREET LANDFILL CITY OF GREENSBORO GREENSBORO, NORTH CAROLINA TITLE GROUNDWATER SURFACE CONTOUR MAP APRIL 19, 2022 PROJECT NO. 19-131339 0 0 FIGURE 1 0 LEGEND ❑ SW-1 SURFACE WATER MONITORING POINT CLIENT CITY OF GREENSBORO UC --u xr 1% G O L D E R I) PREPARED SEP REVIEWED DYR GOLDER ASSOCIATES NC, INC. APPROVED RPK NOTES 1. SURFACE WATER LOCATIONS ARE APPROXIMATE. 2. 7.5 MINUTE USGS QUADRANGLE, MCLEANSVILLE, NORTH CAROLINA, 2016. SITE LOCATION MAP ° NOT TO SCALE o 0 0 1500 3000 1" = 1500' FEET PROJECT WHITE STREET LANDFILL CITY OF GREENSBORO GREENSBORO, NORTH CAROLINA TITLE SURFACE WATER LOCATION MAP PROJECT NO. FIGURE 19-131339 0 2 August2022 19131339.105 APPENDIX A Groundwater and Surface Water Sampling Logs %%till GOLDER %%%%I) GOLDER Project Name: White Street Well ID: AA4 - f Well Diameter: 2 inches Depth to Bottom: a feet Pumping Rate: mUmin. DATE: y - ?- G ~ � Z GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): T•MtACi-6e)(- A+ Initial Depth to Water:. t feet Water Column Thickness: feet System Volume: -70 mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 9MM.M. M M r "* ® ORP r Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at I Signature: ) Date:' ` ^ 2 QA1QC Sign Off: Date:/. %1%%I) GOLFER Project Name: White Street Well ID: -1— 1 Well Diameter: 2 inches Depth to Bottom: J+.i , Q J feet Pumping Rate: 1 2v. mLJmin. DATE: L 1 7 GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): T. Martinez Initial Depth to Water: i1r.2 feet Water Column Thickness: ) . 'Z0 feet System Volume: (.-75-- 1 mL Equipment: YS1, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 OW., "Mm��M Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Pao at h Z 7 Signature: QAIQC Sign Off. aA '- Date: (I - Z-( --? L Date: `7- 1 q -Z2 N%%%I) GOLDER Project Name: White Street Well ID: Well Diameter: 2 inches Depth to Bottom: 2 W• uQ feet Pumping Rate: 166 mLlrnin. DATE: LJr Z 1 "'zJ GROUNDWATER SAMPLING LOG Project Number: GL19131339 Sampler(s): T. Martinez Initial Depth to Water: Q 8 U feet Water Column Thickness: /4 . 2 0 feet System Volume:-7�j� _ mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 mom Sp. Cond. (USICM) ORP millivolts Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at Signature: b—L Date: _Lj - 7 1 - Z -L QAIQC Sign Off: i4r Q lriwv Date: `? - i c, - Z 7- N%"%I) GOLDEa DATE: Z_ 1 2, z GROUNDWATER SAMPLING LOG Project Name: White Street Project Number: GL19131339 Well ID: T-3 Sampler(s): '7M !3--em T.-4"4.gP z Well Diameter: 2 inches Initial Depth to Water: II `t feet Depth to Bottom: -1` ' 00 feet Water Column Thickness; feet Pumping Rate; mLlmin. System Volume: `7 6 a mi Equipment: YSt, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-9 5 ® r !• ® •(mill r 4 % =tea ► �•�tl�l�� Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at Signature: Date: L#%I LZ7- QAlQC Sign Off: % ; :. w Date: `7- I -`7.2, 1 a f l'o "Ll r . S 1t%%1) GOLDEP DATE: Li - Z J - z_ GROUNDWATER SAMPLING LOG Project Name: White Street Project Number: GLI9131339 Well ID: Sampler(s): -'T-, T. /Y4 t4. z Well Diameter: 2 inches Initial Depth to Water: -Uri feet Depth to Bottom: t S . Up feet Water Column Thickness: 12,00 feet Pumping Rate: K'o­i1t)d mLlmin. System Volume: C71 U mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Purop MP-15 ORP ■ IBM. .MMM fir_., _ p'���I '� ■���� Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Pure at 0?,, 4:;' Signature: QAlQC Sign Off: . AA )& A Date: L Date: .)—I y r 7-2 11'%I) GOLDER Project Name: _ Sample ID: _ Sampling Location: Equipment: DATE: (4--2.I -27- SURFACE WATER SAMPLING LOG White Street Project No./Phase No.: GL19131339 .S�v - Time 1315 pH s.u. Sp. Cond. us/cm 2 Tu rh. ntu I D is. 02 mg/L � Temp. 0C 0RP my Sampler(s): � J� A b Gnu K S-A,A-,: YSI, Turbidimeter N T Ll Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: 4:1Date: Ll - W • Z� 1N%%I) GOLDER DATE: V - Z 1 _-z,2 SURFACE WATER SAMPLING LOG Project Name: White street Project No./Phase No.: GI-19131339 Sample ID: y„ - 2. Sa pler(s): "r _ /%I ff , Sampling Location: tye5y v V IV- 15- ( re(A G(bs-$ " — Equipment: YSI, Turbidimeter Time )1'4 1 PH S.U. Sp. Cond. US/cm Turb. ntu Dis. 02 mg1L -� u , Temp. 0C ORP mrr �, t 'v,f I .'4-f- S•+ Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QA/QC Sign Off: To Date: -2f" -2 � Date:-f-. 4[�sI) GOLDER DATE:' f J SURFACE WATER SAMPLING LOG Project Name: White Street Project No./Phase No.: GL19131339 Sample ID: _ 5�• - Sampler(s): Sampling Location: Equipment: YSI, Turbidimeter Time pH S.U. Sp. Cond.U2,U us/cm Turh. ntu 1 DIS.02 mg/L q s7`1 Temp. oC Y, —7 ORP mw A 0Id Was- km�r Surface Water Sampling Location Sketch CP10l,y} 5�--3 c i 1 l J f f Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QAJQC Sign Off: Date: �'� Z -• Date: 7 1, 2- 11%,I) COLDER Project Name: Sample ID: Sampling Location: Equipment: White Street 571 - 4 Time �y pH S.U. 7 Sp. Cond. us/cm �L`I 7u rb. ntu Dis. Ox mg/L � Temp. 4C i5 ORP my' DATE: '-I- 2 ) -2 1 �-IM I OTAT►T-11t4i� ''�10lLLel>18IC] Project No./Phase No.: GL19131339 Samplers): YSI, Turbidimeter Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: 9- - QAIQC Sign Off: Date: , '.I'r-zi ? 7 Date: 22T•/-.�,L %%NJ) GOLDLP DATE: /'!?/ 2 '�- SURFACE WATER SAMPLING LOG Project Name: _ White Street Project No./Phase No.: GLI9131339 Sample ID: _ SW- Sampler(s): ,, Sampling Location: Equipment: YSI, Turbidimeter Time pH s_u. 7.11 Sp. Cond. US/cm r2 q3 s Tu rb. ntu' Dis. Oz mg1L Temp. [� ORP mV I Surface Water Sampling Location Sketch �tv--5 Comments (sample methodology, weather conditions, color, silt, etc.): Signature:4 �r E • * • % / Date:.Q Date: ? I- > > August2022 10191iM101Ii[IN APPENDIX B Groundwater, Surface Water, and Leachate Certificates -of -Analysis, Chain -of -Custody Forms, and Laboratory Data Review W,I) GOLDER ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Wednesday, May 4, 2022 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.105, Project Name/Desc: White Street LF-Phase I ENCO Workorder(s): CF05183 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, April 22, 2022. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Amanda L. Gaines Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of 2rJ PROJECT NARRATIVE Date: May 4, 2022 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase I Lab ID: CF05183 Overview (� �Eo www.encolabs.com Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples The 8260D Continuing Calibration Verification (CCV) exhibited a high bias for Bromomethane; however, this analyte was not detected in the associated samples. Quality Control Remarks No Comments Other Comments All samples received under this work order arrived in acceptable conditions. The samples were not checked for chlorine, as it is not required. The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Amanda Gaines Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of 25 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-I1 Lab ID: CF05183-01 Sampled: 04/21/22 12:15 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/22 04/26/22 08:17 04/29/22 12:42 EPA 7470A EPA 245.1 05/19/22 04/29/22 05:32 05/03/22 03:53 EPA 8260D EPA 503013_MS 05/05/22 04/29/22 16:24 04/29/22 23:03 Client ID: 4103-I1 Lab ID: CF05183-01RE1 Sampled: 04/21/22 12:15 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/05/22 04/29/22 14:03 04/29/22 22:11 Client ID: 4103-I2 Lab ID: CF05183-02 Sampled: 04/21/22 11:05 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/22 04/26/22 08:17 04/29/22 12:45 EPA 7470A EPA 245.1 05/19/22 04/29/22 05:32 05/03/22 03:56 EPA 8260D EPA 5030B_MIS 05/05/22 04/28/22 16:04 04/29/22 12:37 Client ID: 4103-I2 Lab ID: CF05183-02RE1 Sampled: 04/21/22 11:05 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/05/22 04/29/22 14:03 04/29/22 22:37 Client ID: 4103-I3 Lab ID: CF05183-03 Sampled: 04/21/22 10:40 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/22 04/26/22 08:17 04/29/22 12:48 EPA 7470A EPA 245.1 05/19/22 04/29/22 05:32 05/03/22 03:58 EPA 8260D EPA 503013_MS 05/05/22 04/28/22 16:04 04/29/22 13:05 Client ID: 4103-I3 Lab ID: CF05183-03RE1 Sampled: 04/21/22 10:40 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/05/22 04/29/22 14:03 04/29/22 23:02 Client ID: 4103-I4 Lab ID: CF05183-04 Sampled: 04/21/22 10:01 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/22 04/27/22 04:26 04/29/22 09:54 EPA 7470A EPA 245.1 05/19/22 04/29/22 05:32 05/03/22 04:01 EPA 8260D EPA 503013_MS 05/05/22 04/28/22 16:04 04/29/22 13:33 Client ID: 4103-I4 Lab ID: CF05183-04RE1 Sampled: 04/21/22 10:01 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/05/22 04/29/22 14:03 04/29/22 23:28 Client ID: 4303-Trip Blank I Lab ID: CF05183-05 Sampled: 04/21/22 10:01 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/05/22 04/28/22 11:32 04/28/22 14:27 EPA 8260D EPA 503013_MS 05/05/22 04/28/22 16:04 04/29/22 07:05 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 25 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4103-I1 Lab ID: CF05183-01 Analvte Results Flag MDL Q Units Method Notes 1,4-Dichlorobenzene 7.0 0.19 1.0 ug/L EPA 8260D Barium - Total 538 1.10 10.0 ug/L EPA 6010D Benzene 5.8 0.15 1.0 ug/L EPA 8260D Chlorobenzene 15 0.17 1.0 ug/L EPA 8260D Chromium - Total 2.52 J 1.40 10.0 ug/L EPA 6010D Client ID: 4103-I1 Lab ID: CF05183-01RE1 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 270 D 8.0 20 ug/L EPA 8260D Client ID: 4103-I2 Lab ID: CF05183-02 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 455 1.10 10.0 ug/L EPA 6010D Chlorobenzene 4.2 0.17 1.0 ug/L EPA 8260D Chromium - Total 2.32 1 1.40 10.0 ug/L EPA 6010D Client ID: 4103-I2 Lab ID: CF05183-02RE1 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 200 D 8.0 20 uq/L EPA 8260D I Client ID: 4303-I3 Lab ID: CF05183-03 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 71.6 1.10 10.0 ug/L EPA 6010D Chromium - Total 2.12 1 1.40 10.0 ug/L EPA 6010D Client ID: 4303-I3 Lab ID: CF05183-03RE1 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 89 D 4.0 10 ug/L EPA 8260D Client ID: 4103-I4 Lab ID: CF05183-04 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dichlorobenzene 2.9 0.19 1.0 ug/L EPA 8260D Barium - Total 754 1.10 10.0 ug/L EPA 6010D Chlorobenzene 5.8 0.17 1.0 ug/L EPA 8260D Client ID: 4103-I4 Lab ID: CF05183-04RE1 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 47 0.80 2.0 ug/L EPA 8260D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 25 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-I1 Lab Sample ID:CF05183-01 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/21/22 12:15 Work Order: CF05183 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 1,4-Dichlorobenzene [306-46-7]^ 7.0 ug/L 1 0.19 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 2D29032 EPA 8260D 04/29/22 23:03 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Acetone [67-64-1]^ 10 u ug/L 1 10 20 2D29032 EPA 8260D 04/29/22 23:03 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 2D29032 EPA 8260D 04/29/22 23:03 RKY Benzene [71-43-2]A 5.8 ug/L 1 0.15 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY QV-01 Carbon disulfide [75-15-0]^ 1.5 u ug/L 1 1.5 5.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Chlorobenzene [108-90-7]A 15 ug/L 1 0.17 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Ethylbenzene[100-41-4]^ 0.13 u ug/L 1 0.13 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Styrene[100-42-5]^ 0.11 u ug/L 1 0.11 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 2D29032 EPA 8260D 04/29/22 23:03 RKY Xylenes (Total) [1330-20-7]^ 0.45 u ug/L 1 0.45 3.0 2D29032 EPA 8260D 04/29/22 23:03 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 25 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-Il Lab Sample ID:CF05183-01 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/21/22 12:15 Work Order: CF05183 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 47 1 50.0 94 % 53-136 2D29032 EPA 6260D 04129122 23:03 RKY Dlbromofluoromethane 53 1 50.0 107 % 67-129 2D29032 EPA 6260D 04129122 23:03 RKY Toluene-d8 54 1 50.0 107 % 59-134 2D29032 EPA 6260D 04129122 23:03 RKY Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed AX Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 2D29006 EPA 7470A 05/03/22 03:53 CPH 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 Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26006 EPA 6010D 04/29/22 12:42 JDH Barium [7440-39-3]^ 538 ug/L 1 1.10 10.0 2D26006 EPA 6010D 04/29/22 12:42 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26006 EPA 6010D 04/29/22 12:42 JDH Chromium [7440-47-3]^ 2.52 J ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 12:42 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26006 EPA 6010D 04/29/22 12:42 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26006 EPA 6010D 04/29/22 12:42 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26006 EPA 6010D 04/29/22 12:42 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 270 D ug/L 10 8.0 20 2D29032 EPA 8260D 04/29/22 22:11 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffy Notes 4.9 1 5.00 99 % 75-125 2D29032 EPA 8260D 04129122 22:11 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 255 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-I2 Lab Sample ID:CF05183-02 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/21/22 11:05 Work Order: CF05183 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 1,1-Dichloroethane [75-34-3]A 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 1,1-Dichloroethene [75-35-4]A 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 1,2,3-Trichloropropane [96-18-4]A 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 u ug/L 1 0.48 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 1,2-Dibromoethane [106-93-4]A 0.66 u ug/L 1 0.66 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 1,2-Dichlorobenzene [95-50-1]A 0.19 u ug/L 1 0.19 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 1,2-Dichloroethane [107-06-2]A 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 1,2-Dichloropropane [78-87-5]A 0.10 u ug/L 1 0.10 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 1,4-Dichlorobenzene [106-46-7]A 0.19 u ug/L 1 0.19 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 2D28026 EPA 8260D 04/29/22 12:37 RKY 4-Methyl-2-pentanone [108-10-1]A 1.1 u ug/L 1 1.1 5.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 2D28026 EPA 8260D 04/29/22 12:37 RKY Acrylonitrile [107-13-1]A 3.5 u ug/L 1 3.5 10 2D28026 EPA 8260D 04/29/22 12:37 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Bromodichloromethane [75-27-4]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Bromoform [75-25-2]A 0.22 u ug/L 1 0.22 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Chlorobenzene [108-90-7]A 4.2 ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Chloroform [67-66-3]A 0.18 u ug/L 1 0.18 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY cis-1,2-Dichloroethene [156-59-2]A 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Iodomethane [74-88-4]A 1.7 u ug/L 1 1.7 5.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Toluene [108-88-3]A 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY trans-1,2-Dichloroethene [156-60-5]A 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY trans-1,3-Dichloropropene [10061-02-6]A 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Trichloroethene [79-01-6]A 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Trichlorofluoromethane [75-69-4]A 0.24 u ug/L 1 0.24 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Vinyl chloride [75-01-4]A 0.32 u ug/L 1 0.32 1.0 2D28026 EPA 8260D 04/29/22 12:37 RKY Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 2D28026 EPA 8260D 04/29/22 12:37 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 25 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-I2 Lab Sample ID:CF05183-02 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/21/22 11:05 Work Order: CF05183 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 92 % 53-136 2D28026 EPA 8260D 0412912212:37 RKY Dlbromofluoromethane 49 1 50.0 98 % 67-129 2D28026 EPA 6260D 0412912212:37 RKY Toluene-d8 55 1 50.0 110 % 59-134 2D28026 EPA 6260D 0412912212:37 RKY Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed AX Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 2D29006 EPA 7470A 05/03/22 03:56 CPH 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 Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26006 EPA 6010D 04/29/22 12:45 JDH Barium [7440-39-3]^ 455 ug/L 1 1.10 10.0 2D26006 EPA 6010D 04/29/22 12:45 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26006 EPA 6010D 04/29/22 12:45 JDH Chromium [7440-47-3]^ 2.32 J ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 12:45 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26006 EPA 6010D 04/29/22 12:45 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26006 EPA 6010D 04/29/22 12:45 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26006 EPA 6010D 04/29/22 12:45 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 200 D ug/L 10 8.0 20 2D29032 EPA 8260D 04/29/22 22:37 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffy Notes 4.3 1 5.00 86 % 75-125 2D29032 EPA 8260D 04129122 22:37 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 255 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-I3 Lab Sample ID:CF05183-03 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/21/22 10:40 Work Order: CF05183 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 2D28026 EPA 8260D 04/29/22 13:05 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 2D28026 EPA 8260D 04/29/22 13:05 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 2D28026 EPA 8260D 04/29/22 13:05 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 2D28026 EPA 8260D 04/29/22 13:05 RKY Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 2D28026 EPA 8260D 04/29/22 13:05 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 25 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-I3 Lab Sample ID:CF05183-03 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/21/22 10:40 Work Order: CF05183 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 52 1 50.0 104 % 53-136 2D28026 EPA 8260D 04129122 13:05 RKY Dlbromofluoromethane 50 1 50.0 100 % 67-129 2D28026 EPA 8260D 0412912213:05 RKY Toluene-d8 53 1 50.0 107 % 59-134 2D28026 EPA 6260D 0412912213:05 RKY Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed AX Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 2D29006 EPA 7470A 05/03/22 03:58 CPH 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 Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26006 EPA 6010D 04/29/22 12:48 JDH Barium [7440-39-3]^ 71.6 ug/L 1 1.10 10.0 2D26006 EPA 6010D 04/29/22 12:48 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26006 EPA 6010D 04/29/22 12:48 JDH Chromium [7440-47-3]^ 2.12 J ug/L 1 1.40 10.0 2D26006 EPA 6010D 04/29/22 12:48 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26006 EPA 6010D 04/29/22 12:48 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26006 EPA 6010D 04/29/22 12:48 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26006 EPA 6010D 04/29/22 12:48 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 89 D ug/L 5 4.0 10 2D29032 EPA 8260D 04/29/22 23:02 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffly Notes 4.7 1 5.00 94 % 75-125 2D29032 EPA 8260D 04129122 23:02 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 25 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-I4 Lab Sample ID:CF05183-04 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/21/22 10:01 Work Order: CF05183 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 1,4-Dichlorobenzene [306-46-7]^ 2.9 ug/L 1 0.19 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 2D28026 EPA 8260D 04/29/22 13:33 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Acetone [67-64-1]^ 10 u ug/L 1 10 20 2D28026 EPA 8260D 04/29/22 13:33 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 2D28026 EPA 8260D 04/29/22 13:33 RKY Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY QV-01 Carbon disulfide [75-15-0]^ 1.5 u ug/L 1 1.5 5.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Chlorobenzene [108-90-7]^ 5.8 ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Ethylbenzene[100-41-4]^ 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Styrene[100-42-5]^ 0.11 u ug/L 1 0.11 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 2D28026 EPA 8260D 04/29/22 13:33 RKY Xylenes (Total) [1330-20-7]^ 0.45 u ug/L 1 0.45 3.0 2D28026 EPA 8260D 04/29/22 13:33 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 25 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-I4 Lab Sample ID:CF05183-04 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/21/22 10:01 Work Order: CF05183 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 49 1 50.0 99 % 53-136 2D28026 EPA 8260D 0412912213:33 RKY Dibromofluoromethane 48 1 50.0 96 % 67-129 2D28026 EPA 6260D 0412912213:33 RKY Toluene-d8 56 1 50.0 113 % 59-134 2D28026 EPA 6260D 041291221333 RKY Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed AX Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 2D29006 EPA 7470A 05/03/22 04:01 CPH 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 Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D27003 EPA 6010D 04/29/22 09:54 JDH Barium [7440-39-3]^ 754 ug/L 1 1.10 10.0 2D27003 EPA 6010D 04/29/22 09:54 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D27003 EPA 6010D 04/29/22 09:54 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D27003 EPA 6010D 04/29/22 09:54 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D27003 EPA 6010D 04/29/22 09:54 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D27003 EPA 6010D 04/29/22 09:54 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D27003 EPA 6010D 04/29/22 09:54 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 47 ug/L 1 0.80 2.0 2D29032 EPA 8260D 04/29/22 23:28 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffy Notes 5.0 1 5.00 99 % 75-125 2D29032 EPA 8260D 04129122 23:28 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 25 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103-Trip Blank I Lab Sample ID:CF05183-05 Received: 04/22/22 12:30 Matrix: Water Sampled:04/21/22 10:01 Work Order: CF05183 Project: White Street LF-Phase I 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 2D28026 EPA 8260D 04/29/22 07:05 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 2D28026 EPA 8260D 04/29/22 07:05 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 2D28026 EPA 8260D 04/29/22 07:05 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 2D28026 EPA 8260D 04/29/22 07:05 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 2D28026 EPA 8260D 04/29/22 07:05 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 2D28026 EPA 8260D 04/29/22 07:05 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 Of 25 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-Trip Blank I Lab Sample ID:CF05183-05 Received: 04/22/22 12:30 Matrix: Water Sampled:04/21/22 10:01 Work Order: CF05183 Project: White Street LF-Phase I Sampled By: ENCO Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 92 % 53-136 2D28026 EPA 6260D 04129122 07:05 RKY Dibromofluoromethane 54 1 50.0 107 % 67-129 2D28026 EPA 6260D 04129122 07:05 RKY Toluene-d8 56 1 50.0 112 % 59-134 2D28026 EPA 6260D 04129122 07:05 RKY Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL POLL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 2D28027 EPA 8260D 04/28/22 14:27 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffy Notes Toluene-d8 5.0 1 5.00 99 % 75-125 2D28027 EPA 8260D 0412812214:27 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 25 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D28026 - EPA 5030B MS Blank (2D28026-BLK1) Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 06:37 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 47 u9/L 50.0 94 53-136 Dibromofluoromethane 51 u9/L 50.0 102 67-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 15 of 25 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D28026 - EPA 5030B MS - Continued Blank (2D28026-BLK1) Continued Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 06:37 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 57 u9/L 50.0 113 59-134 LCS (2D28026-BS1) Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 04:47 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 17 1.0 ug/L 20.0 85 75-133 Benzene 17 1.0 ug/L 20.0 84 80-134 Chlorobenzene 18 1.0 ug/L 20.0 88 80-120 Toluene 18 1.0 ug/L 20.0 89 71-120 Trichloroethene 16 1.0 ug/L 20.0 79 74-120 Matrix Spike (21)28026-MS1) Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 05:15 Source: CF05426-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 19 1.0 ug/L 20.0 0.21 U 97 75-133 Benzene 18 1.0 ug/L 20.0 0.15 U 90 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 93 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 94 71-120 Trichloroethene 17 1.0 ug/L 20.0 0.15 U 86 74-120 Matrix Spike Dup (2D28026-MSD1) Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 05:42 Source: CF05426-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 18 1.0 ug/L 20.0 0.21 U 92 75-133 5 20 Benzene 19 1.0 ug/L 20.0 0.15 U 95 80-134 6 17 Chlorobenzene 18 1.0 ug/L 20.0 0.17 U 92 80-120 1 16 Toluene 18 1.0 ug/L 20.0 0.14 U 91 71-120 3 17 Trichloroethene 18 1.0 ug/L 20.0 0.15 U 91 74-120 6 22 Batch 2D29032 - EPA 5030B MS Blank (2D29032-BLK3) Prepared: 04/29/2022 16:24 Analyzed: 04/29/2022 19:48 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 16 Of 25 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D29032 - EPA 5030B MS - Continued Blank (2D29032-BLK1) Continued Prepared: 04/29/2022 16:24 Analyzed: 04/29/2022 19:48 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 u9/L 50.0 94 53-136 Dibromofluoromethane 50 u9/L 50.0 101 67-129 Toluene-d8 54 u9/L 50.0 109 59-134 LCS (2D29032-BSI) Prepared: 04/29/2022 16:24 Analyzed: 04/29/2022 17:57 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 89 75-133 Benzene 18 1.0 ug/L 20.0 89 80-134 Chlorobenzene 18 1.0 ug/L 20.0 92 80-120 Toluene 18 1.0 ug/L 20.0 89 71-120 Trichloroethene 18 1.0 ug/L 20.0 91 74-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 17 Of 25 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D29032 - EPA 5030B MS - Continued (� �Eo www.encolabs.com Matrix Spike (2D29032-MS1) Prepared: 04/29/2022 16:24 Analyzed: 04/29/2022 18:25 Source: CF05676-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 0.21 U 105 75-133 Benzene 20 1.0 ug/L 20.0 0.15 U 99 80-134 Chlorobenzene 23 1.0 ug/L 20.0 0.17 U 113 80-120 Toluene 22 1.0 ug/L 20.0 0.14 U 108 71-120 Trichloroethene 19 1.0 ug/L 20.0 0.15 U 93 74-120 Matrix Spike Dup (21329032-MS131) Prepared: 04/29/2022 16:24 Analyzed: 04/29/2022 18:53 Source: CF05676-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 0.21 U 108 75-133 3 20 Benzene 21 1.0 ug/L 20.0 0.15 U 104 80-134 4 17 Chlorobenzene 21 1.0 ug/L 20.0 0.17 U 107 80-120 6 16 Toluene 21 1.0 ug/L 20.0 0.14 U 106 71-120 3 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 104 74-120 11 22 Metals by EPA 6000/7000 Series Methods - Quality Control Batch 2D29006 - EPA 245.1 Blank (2D29006-BLK1) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:24 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 0.150 U 0.200 ug/L LCS (2D29006-BS1) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:29 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.74 0.200 ug/L 5.00 95 80-120 Matrix Spike (2D29006-MS1) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:32 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.97 0.200 ug/L 5.00 0.150 U 99 75-125 Matrix Spike Dup (2D29006-MSDS) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:35 Source: CFO5551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.02 0.200 ug/L 5.00 0.150 U 100 75-125 1 25 Post Spike (2D29006-PS1) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:44 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.38 0.200 ug/L 4.76 0.00924 113 75-125 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26006 - EPA 3005A FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 18 Of ZrJ (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26OO6 - EPA 3OO5A - Continued Blank (2D26006-BLK1) Prepared: 04/26/2022 08:17 Analyzed: 04/29/2022 12:05 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 Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L LCS (2D26006-BS1) Prepared: 04/26/2022 08:17 Analyzed: 04/29/2022 12:15 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 194 10.0 ug/L 200 97 80-120 Barium 204 10.0 ug/L 200 102 80-120 Cadmium 19.4 1.00 ug/L 20.0 97 80-120 Chromium 196 10.0 ug/L 200 98 80-120 Lead 196 10.0 ug/L 200 98 80-120 Selenium 203 10.0 ug/L 200 101 80-120 Silver 200 10.0 ug/L 200 100 80-120 Matrix Spike (2D26006-MS1) Prepared: 04/26/2022 08:17 Analyzed: 04/29/2022 12:17 Source: CF05551-05 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 172 10.0 ug/L 200 7.60 U 86 75-125 Barium 282 10.0 ug/L 200 98.5 92 75-125 Cadmium 17.6 1.00 ug/L 20.0 0.360 U 88 75-125 Chromium 189 10.0 ug/L 200 1.90 94 75-125 Lead 181 10.0 ug/L 200 3.10 U 90 75-125 Selenium 180 10.0 ug/L 200 6.20 U 90 75-125 Silver 200 10.0 ug/L 200 1.90 U 100 75-125 Matrix Spike Dup (2D26006-MSDS) Prepared: 04/26/2022 08:17 Analyzed: 04/29/2022 12:26 Source: CFO5551-05 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 169 10.0 ug/L 200 7.60 U 84 75-125 2 20 Barium 286 10.0 ug/L 200 98.5 94 75-125 1 20 Cadmium 17.2 1.00 ug/L 20.0 0.360 U 86 75-125 2 20 Chromium 190 10.0 ug/L 200 1.90 94 75-125 0.5 20 Lead 177 10.0 ug/L 200 3.10 U 89 75-125 2 20 Selenium 178 10.0 ug/L 200 6.20 U 89 75-125 0.7 20 Silver 200 10.0 ug/L 200 1.90 U 100 75-125 0.07 20 Post Spike (2D26006-PS3) Prepared: 04/26/2022 08:17 Analyzed: 04/29/2022 12:28 Source: CF05551-05 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 0.181 0.0100 mg/L 0.200 -0.0117 90 80-120 Barium 0.298 0.0100 mg/L 0.200 0.0985 100 80-120 Cadmium 0.0186 0.00100 mg/L 0.0200 -0.000563 93 80-120 Chromium 0.203 0.0100 mg/L 0.200 0.00190 101 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 19 of 25 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26006 - EPA 3005A - Continued Post Spike (21326006-13SI) Continued Prepared: 04/26/2022 08:17 Analyzed: 04/29/2022 12:28 Source: CF0SSS1-0S Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Lead 0.191 0.0100 mg/L 0.200-0.00260 96 80-120 Selenium 0.196 0.0100 mg/L 0.200-0.0119 98 80-120 Silver 0.214 0.0100 mg/L 0.200 0.000729 106 80-120 Batch 2D27003 - EPA 3005A Blank (2D27003-BLK1) Prepared: 04/27/2022 04:26 Analyzed: 04/29/2022 09:51 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 Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L LCS (2D27003-BS1) Prepared: 04/27/2022 04:26 Analyzed: 04/29/2022 09:58 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 202 10.0 ug/L 200 101 80-120 Barium 203 10.0 ug/L 200 101 80-120 Cadmium 20.0 1.00 ug/L 20.0 100 80-120 Chromium 200 10.0 ug/L 200 100 80-120 Lead 200 10.0 ug/L 200 100 80-120 Selenium 207 10.0 ug/L 200 103 80-120 Silver 203 10.0 ug/L 200 101 80-120 Matrix Spike (2D27003-MS1) Prepared: 04/27/2022 04:26 Analyzed: 04/29/2022 10:01 Source: CF05183-04 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 93 75-125 Barium 933 10.0 ug/L 200 754 89 75-125 Cadmium 18.8 1.00 ug/L 20.0 0.360 U 94 75-125 Chromium 199 10.0 ug/L 200 1.40 U 99 75-125 Lead 193 10.0 ug/L 200 3.10 U 97 75-125 Selenium 176 10.0 ug/L 200 6.20 U 88 75-125 Silver 203 10.0 ug/L 200 1.90 U 101 75-125 Matrix Spike Dup (2D27003-MSDS) Prepared: 04/27/2022 04:26 Analyzed: 04/29/2022 10:03 Source: CF05183-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 184 10.0 ug/L 200 7.60 U 92 75-125 1 20 Barium 926 10.0 ug/L 200 754 86 75-125 0.8 20 Cadmium 18.4 1.00 ug/L 20.0 0.360 U 92 75-125 2 20 Chromium 196 10.0 ug/L 200 1.40 U 98 75-125 1 20 Lead 192 10.0 ug/L 200 3.10 U 96 75-125 0.5 20 Selenium 177 10.0 ug/L 200 6.20 U 89 75-125 0.9 20 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 20 Of 25 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D27003 - EPA 3005A - Continued Matrix Spike Dup (2D27003-MSDS) Continued Prepared: 04/27/2022 04:26 Analyzed: 04/29/2022 10:03 Source: CF05183-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Silver 201 10.0 ug/L 200 1.90 U 101 75-125 1 20 Post Spike (2D27003-PS1) Prepared: 04/27/2022 04:26 Analyzed: 04/29/2022 10:06 Source: CF05183-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.196 0.0100 mg/L 0.200 -0.0167 98 80-120 Barium 0.950 0.0100 mg/L 0.200 0.754 98 80-120 Cadmium 0.0198 0.00100 mg/L 0.0200 -0.000274 99 80-120 Chromium 0.206 0.0100 mg/L 0.200 0.000822 103 80-120 Lead 0.199 0.0100 mg/L 0.200 0.000353 99 80-120 Selenium 0.181 0.0100 mg/L 0.200 -0.0373 91 80-120 Silver 0.213 0.0100 mg/L 0.200 -0.000572 107 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 2D28027 - EPA 5030B MS Blank (2D28027-BLK3) Prepared: 04/28/2022 00:00 Analyzed: 04/28/2022 11:51 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 5.1 u9/L 5.00 102 75-125 LCS (2D28027-BSI) Prepared: 04/28/2022 00:00 Analyzed: 04/28/2022 11:25 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 23 2.0 ug/L 25.0 93 80-133 Toluene-d8 4.9 u9/L 5.00 98 75-125 Matrix Spike (2D28027-MS1) Prepared: 04/28/2022 00:00 Analyzed: 04/28/2022 17:01 Source: CF05183-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 270 E 2.0 ug/L 25.0 250 104 80-133 Toluene-d8 5.0 u9/L 5.00 99 75-125 Matrix Spike Dup (211328027-MS1131) Prepared: 04/28/2022 00:00 Analyzed: 04/28/2022 17:26 Source: CF05183-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 270 E 2.0 ug/L 25.0 250 93 80-133 0.9 19 Toluene-d8 4.5 u9/L 5.00 90 75-125 Batch 2D29032 - EPA 5030B MS Blank (2D29032-BLKI) Prepared: 04/29/2022 14:03 Analyzed: 04/29/2022 14:53 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 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 21 of ZJ (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 2D29032 - EPA 5030B MS - Continued Blank (2D29032-BLK1) Continued Prepared: 04/29/2022 14:03 Analyzed: 04/29/2022 14:53 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 4.6 u9/L 5.00 93 75-125 LCS (2D29032-BS1) Prepared: 04/29/2022 14:03 Analyzed: 04/29/2022 14:27 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 98 80-133 Toluene-d8 4.7 u9/L 5.00 94 75-125 Matrix Spike (21329032-MS1) Prepared: 04/29/2022 14:03 Analyzed: 04/29/2022 23:54 Source: AF03411-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 94 80-133 Toluene-d8 4.8 u9/L 5.00 97 75-125 Matrix Spike Dup (21329032-MS131) Prepared: 04/29/2022 14:03 Analyzed: 04/30/2022 00:19 Source: AF03411-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 23 2.0 ug/L 25.0 0.80 U 93 80-133 1 19 Toluene-& 4.7 u9/L 5.00 94 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 25 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 23 of 25 3 -o 0 T p c1r) CO y m L J C� O u c N C) aJ Q d N m m i Ci E S� US � Z , m M v T C O N j U 0 fiH x x x x C U ag'gd'JO'PO'RS'S f3V x x x x o as m L31 Wills QQ9Zv' b x?puedc O08Z5 x X X X x v n ro '� O q H C] L z 4f O Zo, z mQ E f s a a s m to m b M n N o ^. V vI % ryC y MN a .� z a c AD1m S!S C m m ❑ m E T- T N i r3 q T CL H e E c Q CT G7 1-3 i= o a to _ cra /� m z N l a v v zt m E E CJ d Ci !°' Vi Ul m R1 — I S� W V U C 1 1 ❑ o 0 a � y fd a S U a Qa c v 0 u a 4 r Q� m wY m QI m U Cc cc cc ro ❑ m ❑ m a a e O ` m m v m a M: _ Q � C ¢ m U E n 011 . m a s c a 1° m a 0 a � c EPage 24 of 2 [A U TF I Sample Preservation Verification ENCO Cary =G) 9 gi� Work Order: CF05183 Project: White Street LF-Phase Ciient: Golder Associates, Inc. (00007) Project #: 19131339,105 Logged In: 22-Apr-22 13:00 Logged By: Samantha L t4Vatt Preservation Check Performed By: Date/Time: C F05183-01 Cont Type Pres (pH) Requirement pH Checked / Control pH Adjusted Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y N/ NA Y N/ NA CF05183-02 Gant Type Pres (pH) pH Checked / Requirement -tr+ Control Datefrime. pH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y 1 N /•N !' NA CF05183-03 Cont Yp Type Pres (pH) Requirement PH Checked 1 ,,to Control Date�me pH Adjusted Adjusted Reagent UsedlComments A 250ml-P+HNO3 <2 Y 1` N/ NA Y 1 N 1 NA CF05183-04 Cont yP Type Pres (pH) Requirement pl-t Checked f 11\Control Date/Time J pH Adjusted Adjusted Reagent UsedlComments A 250mLP+HNO3 <2 Y 1. N 1 NA Y/ N j NA Rea ent Name I'D 1 2 l h pH Strip ID: Rea ent Name ID 3 4 Reacient Name ID 5 6 C:IELMNTIPrintlwko_PreservationCheck.rpt Page 25 of 25 WORK ORDER Printed: 4/25/2022 9:17:29AM CF05183 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase I Project Number: 19131339.105 PO #: Report To: Invoice To: Golder Associates, Inc. (G0007) City of Greensboro (CI034) Dusty Reedy Richard Lovett 5B Oak Branch Drive 401 Patton Ave Greensboro, NC 27407 Greensboro, NC 27406 Phone: (336) 852-4903 Phone :(336) 373-4188 Fax: (336) 852-4904 Fax: Received By: David E. Wilder Date Received: 22-Apr-22 12:30 Logged In By: Samantha L Hyatt Date Logged In: 22-Apr-22 13:00 Work Order Comments: RED received at 1.0°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: White Street Landfill — Phase I Project Reference Number. 19131339.105 Sampling Event Date: March 19 — 21, 2022 Review Date: 7-19-22 Report #: CF05183-01 \%til) GOLDER Initials: JS Review. RPK 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 NC, Inc. has reviewed the laboratory certificates of analysis, chain -of -custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: • Region III Modifications to Functional Guidelines for Organic Data Review Multi -Media, Multi -Concentration, September 1994; • Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and • Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility/C & D List X NC Appendix I (VOAs and Metals) NC Appendix I + Detects NC Appendix II NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW JS COC was properly signed by all parties. JS Correct project name and number are on the form. JS Sample receipt condition at laboratory was acceptable. JS Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES JS Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 3 \%1I) GOLDER Review Criteria Method Anal tes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW JS Laboratory analyzed at least one internal blank for each method, where applicable. JS Laboratory blank is interference -free. JS Surrogate recoveries are provided for each analytical method, where applicable. JS Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). JS MS/MSD/LCS data results are provided for each analytical method. JS MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). The 8260D Continuing Calibration Verification (CCV) for ground water exhibited a high bias for Bromomethane; however, this analyte was not detected in the associated samples. The 8260D Continuing Calibration Verification (CCV) for surface water exhibited a high bias for 4-Methyl-2-pentanone, Acrylonitrile, Bromomethane, Chloroethane, and Vinyl acetate; however, these analytes were not detected in the associated samples. 4.0 ANALYTE LISTS/METHODS JS The proper number of constituents are present for each analyte list as identified above (including detects where applicable). JS Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING JS All analytical reporting associated with the event was performed by the contracted lab JS 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 GOLDER ASSOCIATES NC, INC. %% %% I) G a L D E R QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 3 of 3 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. JS 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. ➢ 1,4-Dioxane: (10x) in 1-1, 1-2; (5x) in 1-3. ➢ Antimony and Thallium by (2x) in MW-13, SW-1, SW-2, SW-3, SW-4, and SW-5. JS The report provides the reporting limit for each constituent. JS 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. JS 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. NC 2L Exceedances ➢ Barium (NC 2L = 700 ua/L • 1-4 @ 754 ug/L ➢ Benzene (NC 2L = 1 ug/L) • 1-1 @ 5.8 ug/L ➢ 1.4 Dioxane (NC 2L= 3 ua/L) • 1-1 @ 270 ug/L • 1-2 @ 200 ug/L • 1-3 @ 89 ug/L • 1-4 @ 47 ug/L ➢ 1,4-Dichlorobenzene (NC 2L = 6 ua/L) • 1-1 @ 7.0 ug/L JS 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). JS 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 Tuesday, May 3, 2022 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.105, Project Name/Desc: White Street LF-Phase I,II,III SW ENCO Workorder(s): CF05185 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, April 22, 2022. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Amanda L. Gaines Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of 24 PROJECT NARRATIVE Date: May 3, 2022 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11,111 SW Lab ID: CF05185 Overview (� �Eo www.encolabs.com Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples The 8260D Continuing Calibration Verification (CCV) exhibited a high bias for 4-Methyl-2-pentanone, Acrylonitrile, Bromomethane, Chloroethane, and Vinyl acetate; however, these analytes were not detected in the associated samples. Quality Control Remarks No Comments Other Comments All samples received under this work order arrived in acceptable conditions. The samples were not checked for chlorine, as it is not required. The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Amanda Gaines Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of 24 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303/12-SW3 Lab ID: CF05185-01 Sampled: 04/21/22 13:15 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/22 04/26/22 08:14 04/29/22 11:24 EPA 6020E EPA 3005A 10/18/22 04/26/22 03:53 04/27/22 13:40 EPA 8260D EPA 503013_MS 05/05/22 04/28/22 11:32 04/28/22 14:53 EPA 8260D EPA 503013_MS 05/05/22 04/28/22 13:28 04/28/22 19:09 Client ID: 4303/12-SW2 Lab ID: CF05185-02 Sampled: 04/21/22 11:41 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/22 04/26/22 08:14 04/29/22 11:26 EPA 6020E EPA 3005A 10/18/22 04/26/22 03:53 04/27/22 13:44 EPA 8260D EPA 503013_MS O5/05/22 04/28/22 11:32 04/28/22 15:18 EPA 8260D EPA 503013_MS 05/05/22 04/28/22 13:28 04/28/22 19:36 Client ID: 4303/12-SW3 Lab ID: CF05185-03 Sampled: 04/21/22 12:05 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/22 04/26/22 08:14 04/29/22 11:29 EPA 6020B EPA 3005A 10/18/22 04/26/22 03:53 04/27/22 13:48 EPA 8260D EPA 503013_MS 05/05/22 04/27/22 13:06 04/28/22 01:25 EPA 8260D EPA 5030B_MS 05/05/22 04/28/22 11:32 04/28/22 15:44 Client ID: 4303/12-SW4 Lab ID: CF05185-04 Sampled: 04/21/22 12:45 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/22 04/26/22 08:14 04/29/22 11:31 EPA 6020B EPA 3005A 10/18/22 04/26/22 03:53 04/27/22 13:52 EPA 8260D EPA 503013_MS 05/05/22 04/27/22 13:06 04/28/22 01:53 EPA 8260D EPA 503013_MS 05/05/22 04/28/22 11:32 04/28/22 16:10 Client ID: 4303/12-Trip Blank Lab ID: CF05185-05 Sampled: 04/21/22 11:41 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/05/22 04/27/22 13:06 04/27/22 21:45 EPA 8260D EPA 503013_MS 05/05/22 04/28/22 11:32 04/28/22 16:35 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 24 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303/12-SW3 Lab ID: CF05185-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 42.7 1.10 10.0 ug/L EPA 6010D Chromium - Total 2.03 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 6.67 J 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW2 Lab ID: CF05185-02 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.7 J 0.80 2.0 ug/L EPA 8260D Barium - Total 51.1 1.10 10.0 ug/L EPA 6010D Zinc - Total 6.19 J 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW3 Lab ID: CF05185-03 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 41.4 1.10 10.0 ug/L EPA 6010D Chromium - Total 1.80 1 1.40 10.0 ug/L EPA 6010D Zinc - Total 7.15 1 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW4 Lab ID: CF05185-04 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 45.5 1.10 10.0 ug/L EPA 6010D Zinc - Total 14.6 4.40 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 24 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW1 Lab Sample ID:CF05185-01 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 13:15 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Cc> Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 2D28019 EPA 8260D 04/28/22 19:09 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Acetone [67-64-1]A 10 U ug/L 1 10 20 2D28019 EPA 8260D 04/28/22 19:09 RKY Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 2D28019 EPA 8260D 04/28/22 19:09 RKY Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Chlorobenzene[108-90-7]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 2D28019 EPA 8260D 04/28/22 19:09 RKY Xylenes (Total) [1330-20-7]A 0.45 U ug/L 1 0.45 3.0 2D28019 EPA 8260D 04/28/22 19:09 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW1 Lab Sample ID:CF05185-01 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 13:15 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 45 1 50.0 91 % 53-136 2D28019 EPA 6260D 04126122 19:09 RKY Dibromofluoromethane 56 1 50.0 112 % 67-129 2D28019 EPA 6260D 0412812219:09 RKY Toluene-d8 59 1 50.0 117 % 59-134 2D28019 EPA 6260D 0412812219:09 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D26003 EPA 6020B 04/27/22 13:40 JDH Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Barium [7440-39-3]^ 42.7 ug/L 1 1.10 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26005 EPA 6010D 04/29/22 11:24 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26005 EPA 6010D 04/29/22 11:24 JDH Chromium [7440-47-3]^ 2.03 J ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Cobalt [7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26003 EPA 6020B 04/27/22 13:40 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Zinc[7440-66-6]^ 6.67 J ug/L 1 4.40 10.0 2D26005 EPA 6010D 04/29/22 11:24 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 2D28027 EPA 8260D 04/28/22 14:53 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.6 1 5.00 93 % 75-125 2D28027 EPA 8260D 0412812214:53 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 24 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW2 Lab Sample ID:CF05185-02 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 11:41 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Cc> Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 2D28019 EPA 8260D 04/28/22 19:36 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Acetone [67-64-1]A 10 U ug/L 1 10 20 2D28019 EPA 8260D 04/28/22 19:36 RKY Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 2D28019 EPA 8260D 04/28/22 19:36 RKY Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Chlorobenzene[108-90-7]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 2D28019 EPA 8260D 04/28/22 19:36 RKY Xylenes (Total) [1330-20-7]A 0.45 U ug/L 1 0.45 3.0 2D28019 EPA 8260D 04/28/22 19:36 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW2 Lab Sample ID:CF05185-02 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 11:41 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 47 1 50.0 95 % 53-136 2D28019 EPA 6260D 0412612219:36 RKY Dibromofluoromethane 59 1 50.0 118 % 67-129 2D28019 EPA 6260D 0412812219:36 RKY Toluene-d8 58 1 50.0 115 % 59-134 2D28019 EPA 6260D 041281221936 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D26003 EPA 6020B 04/27/22 13:44 JDH Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Barium [7440-39-3]^ 51.1 ug/L 1 1.10 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26005 EPA 6010D 04/29/22 11:26 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26005 EPA 6010D 04/29/22 11:26 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Cobalt [7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26003 EPA 6020B 04/27/22 13:44 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Zinc[7440-66-6]^ 6.19 J ug/L 1 4.40 10.0 2D26005 EPA 6010D 04/29/22 11:26 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 1.7 J ug/L 1 0.80 2.0 2D28027 EPA 8260D 04/28/22 15:18 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.8 1 5.00 96 % 75-125 2D28027 EPA 8260D 0412812215:18 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 24 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW3 Lab Sample ID:CF05185-03 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 12:05 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Cc> Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 2D27027 EPA 8260D 04/28/22 01:25 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 2D27027 EPA 8260D 04/28/22 01:25 RKY QV-01 Acetone [67-64-1]A 10 u ug/L 1 10 20 2D27027 EPA 8260D 04/28/22 01:25 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 2D27027 EPA 8260D 04/28/22 01:25 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY QV-01 Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Styrene[100-42-5]A 0.11 U ug/L 1 0.11 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 2D27027 EPA 8260D 04/28/22 01:25 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 2D27027 EPA 8260D 04/28/22 01:25 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 2D27027 EPA 8260D 04/28/22 01:25 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW3 Lab Sample ID:CF05185-03 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 12:05 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 52 1 50.0 105 % 53-136 2D27027 EPA 8260D 04126122 01:25 RKY Dibromofluoromethane 54 1 50.0 109 % 67-129 2D27027 EPA 8260D 04128122 01:25 RKY Toluene-d8 57 1 50.0 114 % 59-134 2D27027 EPA 6260D 04128122 01:25 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D26003 EPA 6020B 04/27/22 13:48 JDH Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Barium [7440-39-3]^ 41.4 ug/L 1 1.10 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26005 EPA 6010D 04/29/22 11:29 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26005 EPA 6010D 04/29/22 11:29 JDH Chromium [7440-47-3]^ 1.80 J ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Cobalt [7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26003 EPA 6020B 04/27/22 13:48 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Zinc[7440-66-6]^ 7.15 J ug/L 1 4.40 10.0 2D26005 EPA 6010D 04/29/22 11:29 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 2D28027 EPA 8260D 04/28/22 15:44 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.5 1 5.00 91 % 75-125 2D28027 EPA 8260D 0412812215:44 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 of 24 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW4 Lab Sample ID:CF05185-04 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 12:45 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Cc> Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 2D27027 EPA 8260D 04/28/22 01:53 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 2D27027 EPA 8260D 04/28/22 01:53 RKY QV-01 Acetone [67-64-1]A 10 u ug/L 1 10 20 2D27027 EPA 8260D 04/28/22 01:53 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 2D27027 EPA 8260D 04/28/22 01:53 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY QV-01 Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Styrene[100-42-5]A 0.11 U ug/L 1 0.11 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 2D27027 EPA 8260D 04/28/22 01:53 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 2D27027 EPA 8260D 04/28/22 01:53 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 2D27027 EPA 8260D 04/28/22 01:53 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW4 Lab Sample ID:CF05185-04 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/21/22 12:45 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 97 % 53-136 2D27027 EPA 6260D 04126122 01:53 RKY Dibromofluoromethane 55 1 50.0 110 % 67-129 2D27027 EPA 6260D 04128122 01:53 RKY Toluene-d8 55 1 50.0 110 % 59-134 2D27027 EPA 6260D 04128122 01:53 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D26003 EPA 6020B 04/27/22 13:52 JDH Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Barium [7440-39-3]^ 45.5 ug/L 1 1.10 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D26005 EPA 6010D 04/29/22 11:31 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D26005 EPA 6010D 04/29/22 11:31 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Cobalt [7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26003 EPA 6020B 04/27/22 13:52 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Zinc[7440-66-6]^ 14.6 ug/L 1 4.40 10.0 2D26005 EPA 6010D 04/29/22 11:31 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 2D28027 EPA 8260D 04/28/22 16:10 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.1 1 5.00 101 % 75-125 2D28027 EPA 8260D 0412812216:10 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 of 24 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-Trip Blank Lab Sample ID:CF05185-05 Received: 04/22/22 12:30 Matrix: Water Sampled:04/21/22 11:41 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By: ENCO Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 2D27027 EPA 8260D 04/27/22 21:45 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 2D27027 EPA 8260D 04/27/22 21:45 RKY QV-01 Acetone [67-64-1]A 10 u ug/L 1 10 20 2D27027 EPA 8260D 04/27/22 21:45 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 2D27027 EPA 8260D 04/27/22 21:45 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY QV-01 Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Styrene[100-42-5]A 0.11 Ll ug/L 1 0.11 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 2D27027 EPA 8260D 04/27/22 21:45 RKY QV-01 Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 2D27027 EPA 8260D 04/27/22 21:45 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 2D27027 EPA 8260D 04/27/22 21:45 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-Trip Blank Lab Sample ID:CF05185-05 Received: 04/22/22 12:30 Matrix: Water Sampled:04/21/22 11:41 Work Order: CF05185 Project: White Street LF-Phase I,II,III SW Sampled By: ENCO Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 49 1 50.0 98 % 53-136 2D27027 EPA 6260D 04127122 21:45 RKY Dibromofluoromethane 53 1 50.0 105 % 67-129 2D27027 EPA 6260D 04127122 21:45 RKY Toluene-d8 58 1 50.0 117 % 59-134 2D27027 EPA 6260D 04127122 21:45 RKY Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL POLL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 2D28027 EPA 8260D 04/28/22 16:35 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffly Notes Toluene-d8 5.2 1 5.00 105 % 75-125 2D28027 EPA 8260D 041281221625 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 Of 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D27027 - EPA 5030B MS Blank (2D27027-BLK1) Prepared: 04/27/2022 13:06 Analyzed: 04/27/2022 21:17 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 48 u9/L 50.0 97 53-136 Dibromofluoromethane 54 u9/L 50.0 107 67-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 15 of 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D27027 - EPA 5030B MS - Continued Blank (2D27027-BLK1) Continued Prepared: 04/27/2022 13:06 Analyzed: 04/27/2022 21:17 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 55 u91L 50.0 111 59-134 LCS (2D27027-BS1) Prepared: 04/27/2022 13:06 Analyzed: 04/27/2022 19:26 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 107 75-133 Benzene 21 1.0 ug/L 20.0 105 80-134 Chlorobenzene 19 1.0 ug/L 20.0 97 80-120 Toluene 20 1.0 ug/L 20.0 98 71-120 Trichloroethene 20 1.0 ug/L 20.0 100 74-120 Matrix Spike (2D27027-MS1) Prepared: 04/27/2022 13:06 Analyzed: 04/27/2022 19:54 Source: CF05678-10 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 0.21 U 107 75-133 Benzene 22 1.0 ug/L 20.0 0.15 U 110 80-134 Chlorobenzene 21 1.0 ug/L 20.0 0.17 U 107 80-120 Toluene 21 1.0 ug/L 20.0 0.14 U 107 71-120 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 106 74-120 Matrix Spike Dup (2D27027-MSD1) Prepared: 04/27/2022 13:06 Analyzed: 04/27/2022 20:22 Source: CF05678-10 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 20 1.0 ug/L 20.0 0.21 U 102 75-133 4 20 Benzene 20 1.0 ug/L 20.0 0.15 U 101 80-134 8 17 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 99 80-120 8 16 Toluene 20 1.0 ug/L 20.0 0.14 U 98 71-120 8 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 103 74-120 3 22 Batch 2D28019 - EPA 5030B MS Blank (2D28019-BLK3) Prepared: 04/28/2022 13:28 Analyzed: 04/28/2022 17:16 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 16 Of 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D28019 - EPA 5030B MS - Continued Blank (2D28019-BLK1) Continued Prepared: 04/28/2022 13:28 Analyzed: 04/28/2022 17:16 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L 4-Bromofluorobenzene 46 ug/L 50.0 92 53-136 Dibromofluoromethane 51 u91L 50.0 102 67-129 Toluene-d8 55 u91L 50.0 111 59-134 LCS (2D28019-BSI) Prepared: 04/28/2022 13:28 Analyzed: 04/28/2022 15:24 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 17 1.0 ug/L 20.0 84 75-133 Benzene 19 1.0 ug/L 20.0 93 80-134 Chlorobenzene 20 1.0 ug/L 20.0 99 80-120 Toluene 18 1.0 ug/L 20.0 90 71-120 Trichloroethene 18 1.0 ug/L 20.0 88 74-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 17 Of 24 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D28019 - EPA 5030B MS - Continued (� �Eo www.encolabs.com Matrix Spike (2D28019-MS1) Prepared: 04/28/2022 13:28 Analyzed: 04/28/2022 15:52 Source: CF05678-11 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 18 1.0 ug/L 20.0 0.21 U 91 75-133 Benzene 20 1.0 ug/L 20.0 0.15 U 98 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 97 80-120 Toluene 18 1.0 ug/L 20.0 0.14 U 91 71-120 Trichloroethene 18 1.0 ug/L 20.0 0.15 U 88 74-120 Matrix Spike Dup (21328019-MS131) Prepared: 04/28/2022 13:28 Analyzed: 04/28/2022 16:20 Source: CF05678-11 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 17 1.0 ug/L 20.0 0.21 U 83 75-133 10 20 Benzene 19 1.0 ug/L 20.0 0.15 U 95 80-134 3 17 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 95 80-120 3 16 Toluene 18 1.0 ug/L 20.0 0.14 U 90 71-120 0.9 17 Trichloroethene 16 1.0 ug/L 20.0 0.15 U 80 74-120 10 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26003 - EPA 3005A Blank (2D26003-BLK1) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 12:56 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (2D26003-BSI) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 13:00 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 20.7 1.00 ug/L 20.0 103 80-120 Thallium 20.7 1.00 ug/L 20.0 103 80-120 Matrix Spike (2D26003-MS3) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 13:09 Source: CF05187-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.2 2.00 ug/L 40.0 0.740 U 106 75-125 Thallium 41.4 2.00 ug/L 40.0 0.220 U 103 75-125 Matrix Spike Dup (2D26003-MSD1) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 13:22 Source: CF05187-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 41.6 2.00 ug/L 40.0 0.740 U 104 75-125 2 20 Thallium 40.4 2.00 ug/L 40.0 0.220 U 101 75-125 2 20 Post Spike (21326003-PSI) Prepared: 04/26/2022 03:53 Analyzed: 04/27/2022 13:27 Source: CF05187-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.7 1.00 ug/L 20.0 0.0394 109 75-125 Thallium 20.9 1.00 ug/L 20.0 0.0213 104 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 18 Of 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26005 - EPA 3005A Blank (2D26005-BLK3) Prepared: 04/26/2022 08:14 Analyzed: 04/29/2022 10:42 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L LCS (21326005-BSI) Prepared: 04/26/2022 08:14 Analyzed: 04/29/2022 10:52 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 198 10.0 ug/L 200 99 80-120 Barium 203 10.0 ug/L 200 102 80-120 Beryllium 20.3 1.00 ug/L 20.0 101 80-120 Cadmium 19.9 1.00 ug/L 20.0 100 80-120 Chromium 202 10.0 ug/L 200 101 80-120 Cobalt 204 10.0 ug/L 200 102 80-120 Copper 205 10.0 ug/L 200 103 80-120 Lead 201 10.0 ug/L 200 100 80-120 Nickel 201 10.0 ug/L 200 100 80-120 Selenium 209 10.0 ug/L 200 104 80-120 Silver 204 10.0 ug/L 200 102 80-120 Vanadium 199 10.0 ug/L 200 99 80-120 Zinc 200 10.0 ug/L 200 100 80-120 Matrix Spike (2D26005-MS3) Prepared: 04/26/2022 08:14 Analyzed: 04/29/2022 10:56 Source: CF05187-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 199 10.0 ug/L 200 7.60 U 100 75-125 Barium 303 10.0 ug/L 200 99.7 102 75-125 Beryllium 20.9 1.00 ug/L 20.0 0.160 U 104 75-125 Cadmium 20.1 1.00 ug/L 20.0 0.360 U 100 75-125 Chromium 200 10.0 ug/L 200 1.40 U 100 75-125 Cobalt 210 10.0 ug/L 200 1.40 U 105 75-125 Copper 207 10.0 ug/L 200 2.12 102 75-125 Lead 204 10.0 ug/L 200 3.10 U 102 75-125 Nickel 206 10.0 ug/L 200 3.00 102 75-125 Selenium 197 10.0 ug/L 200 6.20 U 99 75-125 Silver 205 10.0 ug/L 200 1.90 U 103 75-125 Vanadium 202 10.0 ug/L 200 1.40 U 101 75-125 Zinc 212 10.0 ug/L 200 4.40 U 106 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 19 of 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26005 - EPA 3005A - Continued Matrix Spike Dup (2D26005-MSDS) Prepared: 04/26/2022 08:14 Analyzed: 04/29/2022 10:58 Source: CF05187-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 198 10.0 ug/L 200 7.60 U 99 75-125 0.8 20 Barium 302 10.0 ug/L 200 99.7 101 75-125 0.2 20 Beryllium 20.9 1.00 ug/L 20.0 0.160 U 104 75-125 0.05 20 Cadmium 20.2 1.00 ug/L 20.0 0.360 U 101 75-125 0.7 20 Chromium 200 10.0 ug/L 200 1.40 U 100 75-125 0.2 20 Cobalt 210 10.0 ug/L 200 1.40 U 105 75-125 0.1 20 Copper 207 10.0 ug/L 200 2.12 102 75-125 0.08 20 Lead 205 10.0 ug/L 200 3.10 U 103 75-125 0.6 20 Nickel 207 10.0 ug/L 200 3.00 102 75-125 0.1 20 Selenium 203 10.0 ug/L 200 6.20 U 102 75-125 3 20 Silver 205 10.0 ug/L 200 1.90 U 103 75-125 0.002 20 Vanadium 202 10.0 ug/L 200 1.40 U 101 75-125 0.2 20 Zinc 213 10.0 ug/L 200 4.40 U 106 75-125 0.1 20 Post Spike (2D26005-PS1) Prepared: 04/26/2022 08:14 Analyzed: 04/29/2022 11:01 Source: CF05187-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.203 0.0100 mg/L 0.200 -0.00242 102 80-120 Barium 0.302 0.0100 mg/L 0.200 0.0997 101 80-120 Beryllium 0.0209 0.00100 mg/L 0.0200 -5.73E-5 104 80-120 Cadmium 0.0202 0.00100 mg/L 0.0200 -5.16E-5 101 80-120 Chromium 0.200 0.0100 mg/L 0.200 0.000286 100 80-120 Cobalt 0.210 0.0100 mg/L 0.200 0.000326 105 80-120 Copper 0.207 0.0100 mg/L 0.200 0.00212 102 80-120 Lead 0.204 0.0100 mg/L 0.200 0.000869 102 80-120 Nickel 0.207 0.0100 mg/L 0.200 0.00300 102 80-120 Selenium 0.210 0.0100 mg/L 0.200 -0.00548 105 80-120 Silver 0.207 0.0100 mg/L 0.200 0.000875 103 80-120 Vanadium 0.203 0.0100 mg/L 0.200 -8.37E-5 101 80-120 Zinc 0.214 0.0100 mg/L 0.200 0.00435 105 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 2D28027 - EPA 5030B MS Blank (2D28027-BLK3) Prepared: 04/28/2022 00:00 Analyzed: 04/28/2022 11:51 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 5.1 u9/L 5.00 102 75-125 LCS (2D28027-BSI) Prepared: 04/28/2022 00:00 Analyzed: 04/28/2022 11:25 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 23 2.0 ug/L 25.0 93 80-133 Toluene-d8 4.9 u9/L 5.00 98 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 20 Of 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 2D28027 - EPA 5030B MS - Continued Matrix Spike (2D28027-MS1) Prepared: 04/28/2022 00:00 Analyzed: 04/28/2022 17:01 Source: AF03336-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 270 E 2.0 ug/L 25.0 250 104 80-133 Toluene-d8 5.0 u9/L 5.00 99 75-125 Matrix Spike Dup (21328027-MS131) Prepared: 04/28/2022 00:00 Analyzed: 04/28/2022 17:26 Source: AF03336-01 Spike Source Analvte Result Flaq POL Units Level Result %REC 1,4-Dioxane 270 E 2.0 ug/L 25.0 250 93 Toluene-d8 4.5 u9/L 5.00 90 %REC RPD Limits RPD Limit Notes 80-133 0.9 19 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 21 Of 24 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 22 of 24 ►31 0 V N 0 u C C N a cr 0 0 w 0,^ Vi U w 0 Z Q U w cc 0 a ir 0 W a J Z 0 R X w N 2 0 U J z w 2 Z O 7 Z uj m Q N O rn LL oLo N v �� c U a) U N ayi OJ a! N C E U �j E y Cn Ill N CD `'15 E E G� C? E_ F j cr O m p p Z_ m E J _ a N cc Q) y C C V � 7 6 V U � t � x N 4] � _ = m Z E w m m n m � Z 15 gR: cG � O U d m N z m ¢ ¢ rr: z E U m 1 r1 t' C ro c •\~-1 N — N � m • N v U E_ [`N_} E E 10 L 1� t�Yy A 11 pp eS' $'gd'lil'n'J'��'�'J' `�B's8'"�V'• V O 5 n O E o al INIS 009ZB' 1 xlpueddy 0O9ZS X >C X X v �o C 'J m� E C E E m V! 0 w U a mm ^ N L m 1 a✓ '1 4, U a ftl C e r~a d Ic m m c �� E m m m E O LD m , 1 r v ar z I {� Q� c� �� H m ,n �_- c'� as o r 1 N ¢�_ ^ U a 0- a a m m n 3 m a a "' � Q O X O m d N (: mcr r Q' mLn n tS Z jE o w N N N N N m d m Wo � � W 6 0 E! co (D 0 � r � � F L CAS � Page23 of 24 U a W H m ,Ii Li - Sample Preservation Verification ENCO Cary Work Order: CF05185 Client: Golder Associates, Inc. (GO007) Lo ed Ind 22-A r 22 13 05 �uco Project: White Street LF-Phase 1,11,111 SW Project #: 19131339.105 gg p - Logged By: Samantha L yatt Preservation Check Performed By: C Date/Ti me: q�V?17_% 1 `,� CF05185-01 Cott Type Pres (pH) Requirement pH Checked I In Control pH Adjusted Datemme .:.Adiusted Reagent Used/Comments A 250mLP+HNO3 <2 Y / N / NA Y ! ,�N 1 NA CF05185-02 Cont yp Type Pres (pH) Requirement pH Checked I .,In Control Date/Time pH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y I N I NA Y /t N/ NA CF05185-03 Cont T e yP Pres (pH) pH Checked 1 DateMme pH Adjusted Reagent Used/Comments Requirement it) Control Adjusted A 250mLP+HNO3 <2 Y! N! NA Y N 1 NA CF05185-04 Cont T e yp Pres (pH) Requirement pH Checked 1 - 1 Control DaterFime pH Adjusted Adiusted Reagent Used/Comments A 250mLP+HNO3 <2 Y N / NA FY / N ! NA Rea ent Name I'D 1 2 pH Strip 1D. Reagent Name ID 3 4 Reacient Name ID 5 6 C:IELMNT1Printlwko_PreservationCheck.rpt Page 24 _. 24 WORK ORDER Printed: 4/25/2022 9:16:52AM CF05185 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase I,II,III SW Project Number: 19131339.105 PO #: Report To: Invoice To: Golder Associates, Inc. (G0007) City of Greensboro (CI034) Dusty Reedy Richard Lovett 5B Oak Branch Drive 401 Patton Ave Greensboro, NC 27407 Greensboro, NC 27406 Phone: (336) 852-4903 Phone :(336) 373-4188 Fax: (336) 852-4904 Fax: Received By: David E. Wilder Date Received: 22-Apr-22 12:30 Logged In By: Samantha L Hyatt Date Logged In: 22-Apr-22 13:05 Work Order Comments: C-511 received at 1.0°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 GOLDER ASSOCIATES INC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: White Street Landfill — Phase I, II, III SW Project Reference Number: 19131339.105 Sampling Event Date: April 19 — 21, 2022 Review Date: June 2, 2022 Report #: CF05185, CF05184 \%til) GOLDER Initials: NTT Review: DYR Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain -of -custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: • Region III Modifications to Functional Guidelines for Organic Data Review Multi -Media, Multi -Concentration, September 1994; • Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and • Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility/C & D List x NC Appendix I + 1,4-Dioxane NC Appendix I + Detects NC Appendix II NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW NTT COC was properly signed by all parties. NTT Correct project name and number are on the form. NTT Sample receipt condition at laboratory was acceptable. NTT Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES NTT Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 3 GOLDER Review Criteria Method Anal tes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW NTT Laboratory analyzed at least one internal blank for each method, where applicable. NTT Laboratory blank is interference -free. NTT Surrogate recoveries are provided for each analytical method, where applicable. NTT Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). NTT MS/MSD/LCS data results are provided for each analytical method. NTT MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). 4.0 ANALYTE LISTS/METHODS NTT The proper number of constituents are present for each analyte list as identified above (including detects where applicable). NTT Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING NTT All analytical reporting associated with the event was performed by the contracted lab NTT Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been `flagged' with a `B' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 1 OX for commonly detected laboratory contaminants -acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. NTT It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should GOLDER ASSOCIATES NC, INC. �� I j C O L D E R QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 3 of 3 be reported as 10). Those that have been diluted are listed below with the dilution factor. Antimony and Thallium: All points (2x) NTT The report provides the reporting limit for each constituent. NTT The results were reported at or below their proper reporting limits (e.g., MDLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. NTT No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Interim Maximum Allowable Concentrations (IMACs) in wells or field/equipment/trip blanks or above applicable Surface Water Standards for surface water points. NTT No quantifiable inorganic or organic constituents were detected in a well or surface water point at concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). NTT Other report issues/Communications with laboratory/etc.: The 8260D Continuing Calibration Verification (CCV) exhibited a high bias for 4- Methyl-2-pentanone, Acrylonitrile, Bromomethane, Chloroethane, and Vinyl acetate; however, these analytes were not detected in the associated samples. ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Wednesday, May 4, 2022 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.105, Project Name/Desc: White Street LF-Phase I,II- Spring ENCO Workorder(s): CF05184 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, April 22, 2022. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Amanda L. Gaines Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of 7 PROJECT NARRATIVE Date: May 4, 2022 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11- Spring Lab ID: CF05184 Overview (� �Eo www.encolabs.com Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples The 8260D Continuing Calibration Verification (CCV) exhibited a high bias for Bromomethane; however, this analyte was not detected in the associated samples. Quality Control Remarks No Comments Other Comments All samples received under this work order arrived in acceptable conditions. The samples were not checked for chlorine, as it is not required. The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Amanda Gaines Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of 7 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-MW33 Lab ID: CF05184-01 Sampled: 04/20/22 13:22 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/17/22 04/29/22 05:18 05/03/22 10:46 EPA 6020E EPA 3005A 10/17/22 04/26/22 03:58 04/27/22 16:11 EPA 7470A EPA 245.1 05/18/22 04/29/22 05:32 05/03/22 04:03 EPA 8260D EPA 503013_MS 05/04/22 04/27/22 12:43 04/27/22 17:50 EPA 8260D EPA 503013_MS 05/04/22 04/28/22 16:04 04/29/22 14:01 Client ID: 4103-SW5 Lab ID: CF05184-02 Sampled: 04/20/22 08:15 Received: 04/22/22 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/17/22 04/29/22 05:18 05/03/22 10:49 EPA 6020B EPA 3005A 10/17/22 04/26/22 03:58 04/27/22 16:15 EPA 8260D EPA 503013_MS 05/04/22 04/27/22 12:43 04/27/22 18:15 EPA 8260D EPA 503013_MS 05/04/22 04/28/22 16:04 04/29/22 14:29 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 17 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-MW33 Lab ID: CF05184-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 97.9 1.10 10.0 ug/L EPA 6010D Vanadium - Total 3.69 J 1.40 10.0 ug/L EPA 6010D Client ID: 4103-SWS Lab ID: CF05184-02 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 43.6 1.10 10.0 ug/L EPA 6010D Copper - Total 2.91 J 1.60 10.0 ug/L EPA 6010D Zinc - Total 21.0 4.40 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 17 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CF05184-01 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 13:22 Work Order: CF05184 Project: White Street LF-Phase I,II- Spring Sampled By:Travis Martinez/Darren Co> Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 21)28026 EPA 8260D 04/29/22 14:01 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 21)28026 EPA 8260D 04/29/22 14:01 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 21)28026 EPA 8260D 04/29/22 14:01 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Tetrahydrofuran [109-99-9]^ 0.53 u ug/L 1 0.53 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 21)28026 EPA 8260D 04/29/22 14:01 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 21)28026 EPA 8260D 04/29/22 14:01 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 of 17 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CF05184-01 Received: 04/22/22 12:30 Matrix: Ground Water Sampled:04/20/22 13:22 Work Order: CF05184 Project: White Street LF-Phase I,II- Spring Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 2D28026 EPA 8260D 04/29/22 14:01 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 96 % 53-136 2D28026 EPA 8260D 04129122 14:01 RKY Dlbromofluoromethane 50 1 50.0 100 % 67-129 2D28026 EPA 8260D 0412912214:01 RKY Toluene-c48 55 1 50.0 109 % 59-134 2D28026 EPA 6260D 0412912214:01 RKY Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 2D29006 EPA 7470A 05/03/22 04:03 CPH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D26004 EPA 6020B 04/27/22 16:11 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Barium [7440-39-3]A 97.9 ug/L 1 1.10 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D29004 EPA 6010D 05/03/22 10:46 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D29004 EPA 6010D 05/03/22 10:46 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26004 EPA 6020B 04/27/22 16:11 JDH Vanadium [7440-62-2]^ 3.69 J ug/L 1 1.40 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 2D29004 EPA 6010D 05/03/22 10:46 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl 1,4-Dioxane [123-91-1]^ Surrogates Toluene-d8 Results Flaa Units DF MDL PQL Batch Method Analyzed Ay Notes 0.80 U ug/L 1 0.80 2.0 2D27041 EPA 8260D 04/27/22 17:50 KKW Results DF Soike Lv/ % Rec % Rec Limits Batch Method Analyzed By Notes 4.9 1 5.00 99 % 75-125 2D27041 EPA 8260D 0412712217:50 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 17 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SW5 Lab Sample ID:CF05184-02 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/20/22 08:15 Work Order: CF05184 Project: White Street LF-Phase I,II- Spring Sampled By:Travis Martinez/Darren Cc> Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 2D28026 EPA 8260D 04/29/22 14:29 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 2D28026 EPA 8260D 04/29/22 14:29 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 2D28026 EPA 8260D 04/29/22 14:29 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 2D28026 EPA 8260D 04/29/22 14:29 RKY Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 2D28026 EPA 8260D 04/29/22 14:29 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 Of 17 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SW5 Lab Sample ID:CF05184-02 Received: 04/22/22 12:30 Matrix: Surface Water Sampled:04/20/22 08:15 Work Order: CF05184 Project: White Street LF-Phase I,II- Spring Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 93 % 53-136 2D28026 EPA 6260D 0412912214:29 RKY Dibromofluoromethane 53 1 50.0 107 % 67-129 2D28026 EPA 6260D 0412912214:29 RKY Toluene-d8 55 1 50.0 110 % 59-134 2D28026 EPA 6260D 0412912214:29 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 2D26004 EPA 6020B 04/27/22 16:15 JDH Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Barium [7440-39-3]^ 43.6 ug/L 1 1.10 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 2D29004 EPA 6010D 05/03/22 10:49 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 2D29004 EPA 6010D 05/03/22 10:49 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Copper[7440-50-8]^ 2.91 J ug/L 1 1.60 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 2D26004 EPA 6020B 04/27/22 16:15 JDH Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Zinc[7440-66-6]^ 21.0 ug/L 1 4.40 10.0 2D29004 EPA 6010D 05/03/22 10:49 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 2D27041 EPA 8260D 04/27/22 18:15 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 99 % 75-125 2D27041 EPA 8260D 0412712218:15 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 7 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D28026 - EPA 5030B MS Blank (2D28026-BLK1) Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 06:37 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Tetrahydrofuran 0.53 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 47 u9/L 50.0 94 53-136 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 9 Of 17 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 2D28O26 - EPA 5O3OB MS - Continued (� �Eo www.encolabs.com Blank (2D28026-BLK1) Continued Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 06:37 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Dibromofluoromethane 51 u9/L 50.0 102 67-129 Toluene-& 57 u9/L 50.0 113 59-134 LCS (21328026-BSI) Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 04:47 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 17 1.0 ug/L 20.0 85 75-133 Benzene 17 1.0 ug/L 20.0 84 80-134 Chlorobenzene 18 1.0 ug/L 20.0 88 80-120 Toluene 18 1.0 ug/L 20.0 89 71-120 Trichloroethene 16 1.0 ug/L 20.0 79 74-120 Matrix Spike (2D28026-MS1) Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 05:15 Source: CF05426-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 19 1.0 ug/L 20.0 0.21 U 97 75-133 Benzene 18 1.0 ug/L 20.0 0.15 U 90 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 93 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 94 71-120 Trichloroethene 17 1.0 ug/L 20.0 0.15 U 86 74-120 Matrix Spike Dup (2D28026-MSDI) Prepared: 04/28/2022 16:04 Analyzed: 04/29/2022 05:42 Source: CF05426-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 18 1.0 ug/L 20.0 0.21 U 92 75-133 5 20 Benzene 19 1.0 ug/L 20.0 0.15 U 95 80-134 6 17 Chlorobenzene 18 1.0 ug/L 20.0 0.17 U 92 80-120 1 16 Toluene 18 1.0 ug/L 20.0 0.14 U 91 71-120 3 17 Trichloroethene 18 1.0 ug/L 20.0 0.15 U 91 74-120 6 22 Metals by EPA 6000/7000 Series Methods - Quality Control Batch 2D29OO6 - EPA 245.1 Blank (2D29006-BLK3) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:24 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 0.150 u 0.200 ug/L LCS (2D29006-BSI) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:29 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.74 0.200 ug/L 5.00 95 80-120 Matrix Spike (21)29006-MS1) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:32 Source: CFO5551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.97 0.200 ug/L 5.00 0.150 U 99 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 10 Of 17 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals by EPA 6000/7000 Series Methods - Quality Control Batch 2D29006 - EPA 245.1 - Continued Matrix Spike Dup (2D29006-MSDI) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:35 Source: CFO5551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.02 0.200 ug/L 5.00 0.150 U 100 75-125 1 25 Post Spike (2D29006-PS1) Prepared: 04/29/2022 05:32 Analyzed: 05/03/2022 03:44 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.38 0.200 ug/L 4.76 0.00924 113 75-125 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D26004 - EPA 3005A Blank (2D26004-BLK3) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 15:16 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (2D26004-BSI) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 15:26 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 20.6 1.00 ug/L 20.0 103 80-120 Thallium 20.3 1.00 ug/L 20.0 101 80-120 Matrix Spike (2D26004-MS3) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 15:36 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 39.8 2.00 ug/L 40.0 0.740 U 99 75-125 Thallium 38.3 2.00 ug/L 40.0 0.220 U 96 75-125 Matrix Spike Dup (211326004-MS1131) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 15:40 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 41.4 2.00 ug/L 40.0 0.740 U 103 75-125 4 20 Thallium 39.1 2.00 ug/L 40.0 0.220 U 98 75-125 2 20 Post Spike (2D26004-PS1) Prepared: 04/26/2022 03:58 Analyzed: 04/27/2022 16:06 Source: CF05551-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.3 1.00 ug/L 20.0 0.0420 107 75-125 Thallium 20.5 1.00 ug/L 20.0 0.0324 103 75-125 Batch 2D29004 - EPA 3005A Blank (2D29004-BLK3) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:30 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 17 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D29004 - EPA 3005A - Continued Blank (2D29004-BLK1) Continued Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:30 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L Blank (2D29004-BLK2) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:34 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L LCS (21329004-BSI) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:39 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 205 10.0 ug/L 200 102 80-120 Barium 204 10.0 ug/L 200 102 80-120 Beryllium 20.4 1.00 ug/L 20.0 102 80-120 Cadmium 20.7 1.00 ug/L 20.0 103 80-120 Chromium 203 10.0 ug/L 200 102 80-120 Cobalt 209 10.0 ug/L 200 105 80-120 Copper 204 10.0 ug/L 200 102 80-120 Lead 206 10.0 ug/L 200 103 80-120 Nickel 204 10.0 ug/L 200 102 80-120 Selenium 217 10.0 ug/L 200 109 80-120 Silver 205 10.0 ug/L 200 102 80-120 Vanadium 201 10.0 ug/L 200 100 80-120 Zinc 206 10.0 ug/L 200 103 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 of 17 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D29004 - EPA 3005A - Continued Matrix Spike (2D29004-MS1) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:42 Source: CF04294-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 200 10.0 ug/L 200 7.60 U 100 75-125 Barium 245 10.0 ug/L 200 43.8 100 75-125 Beryllium 20.8 1.00 ug/L 20.0 0.300 103 75-125 Cadmium 20.5 1.00 ug/L 20.0 0.360 U 102 75-125 Chromium 204 10.0 ug/L 200 1.60 101 75-125 Cobalt 206 10.0 ug/L 200 1.40 U 103 75-125 Copper 205 10.0 ug/L 200 4.92 100 75-125 Lead 207 10.0 ug/L 200 3.10 U 103 75-125 Nickel 202 10.0 ug/L 200 2.20 U 101 75-125 Selenium 204 10.0 ug/L 200 6.20 U 102 75-125 Silver 205 10.0 ug/L 200 1.90 U 102 75-125 Vanadium 201 10.0 ug/L 200 1.40 U 100 75-125 Zinc 500 10.0 ug/L 200 304 98 75-125 Matrix Spike (2D29004-MS2) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:55 Source: CF04294-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 204 10.0 ug/L 200 7.60 U 102 75-125 Barium 239 10.0 ug/L 200 40.5 99 75-125 Beryllium 20.5 1.00 ug/L 20.0 0.160 U 102 75-125 Cadmium 19.9 1.00 ug/L 20.0 0.360 U 99 75-125 Chromium 200 10.0 ug/L 200 1.40 U 100 75-125 Cobalt 203 10.0 ug/L 200 1.40 U 102 75-125 Copper 200 10.0 ug/L 200 1.60 U 100 75-125 Lead 202 10.0 ug/L 200 3.10 U 101 75-125 Nickel 197 10.0 ug/L 200 2.20 U 99 75-125 Selenium 207 10.0 ug/L 200 6.20 U 103 75-125 Silver 203 10.0 ug/L 200 1.90 U 101 75-125 Vanadium 197 10.0 ug/L 200 1.40 U 99 75-125 Zinc 219 10.0 ug/L 200 16.5 101 75-125 Matrix Spike Dup (211329004-MS1131) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:44 Source: CF04294-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 200 10.0 ug/L 200 7.60 U 100 75-125 0.2 20 Barium 243 10.0 ug/L 200 43.8 100 75-125 0.6 20 Beryllium 20.8 1.00 ug/L 20.0 0.300 102 75-125 0.2 20 Cadmium 20.4 1.00 ug/L 20.0 0.360 U 102 75-125 0.08 20 Chromium 203 10.0 ug/L 200 1.60 101 75-125 0.8 20 Cobalt 205 10.0 ug/L 200 1.40 U 102 75-125 0.8 20 Copper 204 10.0 ug/L 200 4.92 100 75-125 0.7 20 Lead 205 10.0 ug/L 200 3.10 U 102 75-125 1 20 Nickel 201 10.0 ug/L 200 2.20 U 100 75-125 0.5 20 Selenium 211 10.0 ug/L 200 6.20 U 105 75-125 3 20 Silver 204 10.0 ug/L 200 1.90 U 102 75-125 0.5 20 Vanadium 199 10.0 ug/L 200 1.40 U 99 75-125 0.8 20 Zinc 499 10.0 ug/L 200 304 98 75-125 0.2 20 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 of 17 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 2D29004 - EPA 3005A - Continued Post Spike (2D29004-PS3) Prepared: 04/29/2022 05:18 Analyzed: 05/03/2022 09:47 Source: CF04294-01 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.205 0.0100 mg/L 0.200 -0.00310 103 80-120 Barium 0.249 0.0100 mg/L 0.200 0.0438 103 80-120 Beryllium 0.0214 0.00100 mg/L 0.0200 0.000300 106 80-120 Cadmium 0.0208 0.00100 mg/L 0.0200 9.75E-6 104 80-120 Chromium 0.209 0.0100 mg/L 0.200 0.00160 104 80-120 Cobalt 0.211 0.0100 mg/L 0.200 0.000842 105 80-120 Copper 0.212 0.0100 mg/L 0.200 0.00492 103 80-120 Lead 0.208 0.0100 mg/L 0.200 0.00194 103 80-120 Nickel 0.206 0.0100 mg/L 0.200 0.000250 103 80-120 Selenium 0.208 0.0100 mg/L 0.200 -0.00345 104 80-120 Silver 0.209 0.0100 mg/L 0.200 0.000463 104 80-120 Vanadium 0.205 0.0100 mg/L 0.200 -0.000492 103 80-120 Zinc 0.503 0.0100 mg/L 0.200 0.304 100 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 2D27041 - EPA 5030B MS Blank (2D27041-BLK1) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 12:57 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-& 4.8 u91L 5.00 96 75-125 LCS (2D27041-BSI) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 12:32 Spike Source O/oREC RPD Analvte Result Flaq Q Units Level Result O/oREC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 96 80-133 Toluene-d8 4.9 u91L 5.00 98 75-125 Matrix Spike (2D27041-MS1) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 21:16 Source: AF03317-01 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 95 80-133 Toluene-d8 5.0 u91L 5.00 99 75-125 Matrix Spike Dup (2D27041-MSD1) Prepared: 04/27/2022 00:00 Analyzed: 04/27/2022 21:41 Source: AF03317-01 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 94 80-133 1 19 Toluene-d8 4.8 u91L 5.00 96 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 Of 17 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 15 of 17 FA a U U) W_ O T o � N O� z > O U m aW �� W N z O m J D G Z LLJ o Z (ILI m a 0-6 cc r J y U o co z W o o ai OO Ell E Q$ " Lf) E U cn W v � u— m a [n ro a ma Q d d c BH m � uZ hh.l'aS X 0 U (1I W15 oo9Ze' E xlpuemv Qi}rzg X o F �l VltlS t709E9`i�Rua3�3 K Q09L8'l )qpueddy pD9zS v Gi c N a m 0 o U �y W m a '^ VJ W � LL Lo .J 9 � � yyL•� y U E E �. c c7 EL cc klD li L) �1 C V tu- t c •+ 0 L U Z Q a m l� co U-) CDtoA co ro C7 o M O U B ro m cc N N � cc C � E N E rp E Q m V Q Q7 - U 4 Q 0 U � 3 e3 �7 mX a 4Yr� m � s OC � ¢ m ¢ In m O m ❑ m ❑ V } m c a m m m m m m 6 W oa 3 N � N 0 CL CL Q 10 Erg d in tf m LD cc rn c m v a _ 0 ¢ � v +�1 � C C m FPage 16 of 1 a U) Sample Preservation Verification; ENCO Cary Work Order: CF05184 Project: White Street LF-Phase 1,11- Spring Client: Golder Associates, Inc. (00007) Project#; 19131339,105 Logged In: 22-Apr-22 13:16 Logged By: Samantha L yatt Preservation Check Performed By: Date/Time: CF05184-01 Cont Type Pres (pH) Requirement pH Checked I An Controi pH Adjusted Datem►ne Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y 1 N/ NA Y N F NA CF05184-02 Cont Type Pres (pH) Requirement pH Checked / Control pH Adjusted Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y N I NA Y/ N I NA Reagent Name I'D 1 2 pH Strip ID: Reacient Name ID 3 4 Rea ent Name ID 5 6 C:\ELMNT\Print\wko—PreservationCheck.rpt Page 17 of 17 WORK ORDER Printed: 4/25/2022 9:15:29AM CF05184 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase I,II- Spring Project Number: 19131339.105 PO #: Report To: Invoice To: Golder Associates, Inc. (G0007) City of Greensboro (CI034) Dusty Reedy Richard Lovett 5B Oak Branch Drive 401 Patton Ave Greensboro, NC 27407 Greensboro, NC 27406 Phone: (336) 852-4903 Phone :(336) 373-4188 Fax: (336) 852-4904 Fax: Received By: David E. Wilder Date Received: 22-Apr-22 12:30 Logged In By: Samantha L Hyatt Date Logged In: 22-Apr-22 13:16 Work Order Comments: C-511 received at 1.0°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 GOLDER golder.com