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HomeMy WebLinkAbout4103_Guilford_WhiteStreet_PhaseI_MSWLF_Oct20GW_FID1529809_20210212�ENR USE ONLY-4 ❑Paper Report []Electronic Data - Email CD (data loaded! Yes I No DociEvent #: NC DENR Environmental Monitoring Division of Waste Management - Solid Waste Reoortina Form Notice: This form and any Information attached to It are "Public Records" as defined in NO General Statute 132-1. As such, these documents are available for inspection and examination by any person upon request INC General Statute 132-6). Instructions: Prepare one form for each individually monitored unit. Please type or print legibly. Attach a notification table with values (hat attain or exceed NC 2L groundwater standards or NC 213 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 notl6catlon 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 A629 (4)(a)(i), Send the original signed and sealed form, any tables, and Eectronic 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): Gdder 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-mail addrega: Name: David Y. Reety 11, PG Phone: (336) 852-4903 E-mail: dreedy@golder.com NC Landfill Rule: Actual sampling dates (e.g_, Facility name: Facility Address: Facility Permit # (.0500 or .1600) October 20-24, 2006) White Street Landfill - Phase 1 2503 White St, Greensboro, NC 27405 41.03 A600 October 12 - 15. 2020 Environmental Status: (Check all that apply) ❑ InItiallBackground Monitoring Q 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. R( Yes, a notification of values exceeding a groundwater or surface water standard is attached. It includes a list of groundwater and surface water monitoring points, dates, analytical values. NC 2L groundwater standard. NC 26 surface water standard or NC Solid Waste GWP5 and preliminary analysis of the Cause and significance of any concentration. 0 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 exploalve gas levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards. I am aware that there are significant penalties for making any false statement, representation, or certification Including the possibility of a fine and irnprisonmont- David Y. Reedy II, PG Senior tiydrogeologist (33B) 852.4903 Title (Area Code) Telephone Number _> r lam- 1 f Affix NC Licensed/ Professional Geologist Seal Signature -1" d/ [late Golder Associates NC, Inc., 513 Oak Branch Drive, Greensboro, NC 27407 Facility Representative Address C-2862 NC PE Firm License Number (if applicable effective May 1. 2009) Revised 612009 J GOLDER REPORT Second Semi -Annual 2020 Water Quality Monitoring 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 Submitted by: Golder Associates NC, Inc. 5B Oak Branch Drive, Greensboro, North Carolina, USA 27407 +1 336 852-4903 19131339.102 February 12, 2021 February 12, 2021 Distribution List 19131339.102 Richard Lovett, PG, Environmental Compliance Support Manager, Field Operations, City of Greensboro, 401 Patton Avenue, Greensboro, NC 27406. 336-373-4188. Richard.Lovett@greensboro-nc.gov Lewis Walker, Landfill Compliance Supervisor, Field Operations, City of Greensboro, 2503 White Street, Greensboro, NC 27405. 336-254-8096. Lewis.Walker@greensboro-nc.gov Jackie Drummond, Department of Environmental Quality, Division of Waste Management - Solid Waste Section, 2090 US Highway 70, Swannanoa, NC 28778. 828-296-4706. jaclynne.drummond@ncdenr.gov 4 GOLDER February 12, 2021 19131339.102 Executive Summary On behalf of the City of Greensboro, Golder Associates NC, Inc. (Golder) is submitting the enclosed Water Quality Monitoring Report, which documents the results of the October 12 - 15, 2020, semi-annual compliance monitoring event for the Phase I facility at the White Street Landfill. One Resource Conservation and Recovery Act (RCRA) metal (barium) was detected at a quantifiable concentration above the groundwater standard during the October 2020 event from downgradient well 1-4 as it has been historically. During this event, two Appendix I volatile organic constituents (VOCs), benzene and 1,4-dichlorobenzene, were detected at quantifiable concentrations above NC 2L Standards in the sample from downgradient well 1-1. The constituent 1,4-dioxane was also detected at downgradient wells 1-1, 1-2, 1-3, and 1-4 at concentrations above the PQL and 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 I constituents were reported above their respective practical quantitation limit (PQLs) and applicable surface water standards during the October 2020 event. Copper was reported at estimated concentrations below the PQL but above the acute and chronic surface water standard in the samples from upstream monitoring points SW-1 and SW-3, and from downstream monitoring points SW-4 and SW-5. Because the concentrations are estimated below the PQL and concentrations are similar between upstream and downstream monitoring points, the exceedances do not appear to be related to landfill activities and no further action is warranted. 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 April 2021. 4 GOLDER February 12, 2021 Table of Contents 1G1V-1V..101I[1➢i 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 October 2020 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 CONCLUSIONS..............................................................................................................................................5 6.0 REFERENCES................................................................................................................................................5 TABLES Table 1 Summary of Historical Groundwater Elevation Data Table 2 Summary of Estimated Horizontal Flow Velocities Table 3 Summary of Well Construction Information Table 4 Summary of Groundwater Monitoring Results, Detected Constituents Table 5 Summary of Groundwater Field Parameters Table 6 Summary of Surface Water Monitoring Results, Detected Constituents Table 7 Summary of Surface Water Field Parameters FIGURES Figure 1 Groundwater Surface Contour Map, October 12 - 15, 2020 Figure 2 Surface Water Location Map GOLDER February 12, 2021 APPENDICES Appendix A Groundwater and Surface Water Sampling Logs 19131339.102 Appendix B October 2020 Groundwater Certificates -of -Analysis, Chain -of -Custody Forms and Laboratory Data Reviews 4 GOLDER iv February 12, 2021 1.0 INTRODUCTION 19131339.102 This report summarizes the monitoring results from the October 12 - 15, 2020, 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 voluntarily 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 III, 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. Phase I groundwater samples are analyzed for NC Appendix I volatile organic constituents (VOCs) and the eight Resource Conservation and Recovery Act (RCRA) metals semi-annually. The facility's monitoring network also includes five surface water monitoring points, which are shared with the Phase II landfill. 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 Phase II landfill off Rankin Mill Road. The locations of the surface water points are shown on Figure 2. Points 4 GOLDER February 12, 2021 19131339.102 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 October 12 - 13, 2020, are summarized in Table 1 and were used to prepare a groundwater surface contour map presented on Figure 1. As presented, the groundwater flow in the uppermost aquifer beneath the site is generally to the northwest toward North Buffalo Creek, which is located along the northwestern property boundary of the site. The groundwater surface contour map and interpreted flow directions are generally consistent with previously submitted groundwater contour maps and flow directions for this facility Based on the October 2020 groundwater surface contour map, the hydraulic gradient in the shallow aquifer underlying the site, as measured along the conceptual flow paths shown on the contour map, was calculated to average 0.017 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 231 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. GOLDER February 12, 2021 19131339.102 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION Field activities conducted as part of the October 2020 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 the October 2020 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 consist 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 October 2020 Monitoring Event Personnel from Golder visited the facility from October 12 - 15, 2020, to purge and sample monitoring wells and to sample surface water monitoring points. Monitoring wells were purged and sampled using the dedicated pumps at the facility following low -flow micropurge procedures. Measurements of temperature, pH, specific conductivity, turbidity, dissolved oxygen, and oxidation reduction potential were recorded on approximately 5-minute intervals, depending on the purge rate. In general, the purge rate for each well was matched to the yield of the monitoring well, as determined by continuously monitoring the depth to the water, up to a maximum purge rate of approximately 200 milliliters per minute. Purging was continued until stabilization was indicated by the water quality parameters. Prior to sampling, the laboratory -supplied sample containers were prepared. Each sample container was labeled with the sample identification number, sampling personnel, date and time of sample collection, project name and number, and requested chemical analyses. The required groundwater samples were collected directly from the dedicated bladder pump's discharge lines 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 GOLDER February 12, 2021 19131339.102 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 October 2020 groundwater, surface water, and leachate 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 and RCRA metals. 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. Surface water samples were analyzed for NC Appendix I constituents. Surface water and groundwater samples were also analyzed for 1,4-dioxane per the May 29, 2018, memorandum from the NC Department of Environmental Quality (DEQ). 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 I VOCs. Reviews of the laboratory data were performed by Golder personnel and are included in Appendix B. There were no detections of RCRA metals or NC Appendix I constituents in the laboratory method blanks and therefore no data qualification was required. 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, benzene and ,4-dichlorobenzene were the only NC Appendix I VOCs detected at concentrations above the practical quantitation limits (PQLs) and NC 2L Standards in the sample from downgradient monitoring well 1-1 as it has been previously. Barium was detected above the PQL and groundwater standard at monitoring well 1-4 during the October 2020 event. 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. As shown in Table 6, no NC Appendix I constituents were reported above their respective PQLs and applicable surface water standards during the October 2020 event. GOLDER February 12, 2021 5.0 CONCLUSIONS 19131339.102 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 2021. 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. 4 GOLDER 5 February 12, 2021 Signature Page Golder Associates NC, Inc. David "Dusty" Y. Reedy II, PG Senior Hydrageologist Rachel P Kirkman, PG Principal and Senior Consultant Engineering Lic, No. C-28621Geology Lic, No. C-399 19131339.102 Golder Associates NC, Inc. is a licensed user of the Golder trademark, and an associated operating entity. Golder and the G logo are trademarks of Golder Associates Corporation. htlps.7lgolderassociates.sherepoint.comisitesl119193120xxxxx1phase 102 - 2nd sa wqm 20201200 - deliverahlss1252 - iinallphase U19131339,102.001 d+reYO•phosik 1 doex Tables February 2021 19131339.102 TABLE 1 Summary of Historical Groundwater Elevation Data White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Well IDs 1-1 1-2 1-3 1-4 MW-13 TOC Elevation 713.75 703.09 707.43 694.94 741.24 (ft AMSL) Date Elev DTW Elev I DTW Elev DTW Elev DTW Elev DTW 10/14/98 765.90 10.21 763.28 5.30 750.43 i 14.22 753.76 6.07 718.61 i 22.69 03/25/99 759.43 16.68 748.54 20.04 749.06 15.59 750.97 8.86 722.11 19.19 09/22/99 767.74 8.37 752.25 16.33 752.13 12.52 757.61 2.22 721.32 19.98 03/27/00 769.13 6.98 764.37 4.21 752.90 11.75 757.61 2.22 722.49 18.81 09/13/00 767.81 8.30 763.98 4.60 752.22 12.43 757.53 2.30 722.37 18.93 03/12/01 768.57 7.54 763.87 4.71 752.61 12.04 757.61 2.22 721.80 19.50 09/13/01 766.28 9.83 763.65 4.93 751.12 13.53 755.74 4.09 720.98 20.32 03/07/02 767.92 8.19 763.73 4.85 752.40 12.25 757.66 2.17 719.08 22.22 09/18/02 766.67 9.44 763.54 5.04 751.49 13.16 757.69 2.14 722.10 19.20 04/15/03 769.48 6.63 764.20 4.38 753.62 11.03 757.97 1.86 724.59 16.71 10/15/03 767.97 8.14 764.12 4.46 752.22 12.43 757.89 1.94 722.82 18.48 03/24/04 768.55 7.56 763.94 4.64 752.10 12.55 757.70 2.13 722.42 18.88 09/22/14 767.47 8.64 763.80 4.78 751.90 12.75 757.84 1.99 722.56 18.74 05/10/05 766.30 9.81 763.73 4.85 754.89 9.76 757.60 2.23 722.14 19.16 10/11/05 765.57 10.54 763.53 5.05 750.66 13.99 754.33 5.50 719.72 21.58 04/24/06 767.17 8.94 763.92 4.66 751.62 13.03 757.34 2.49 720.25 21.05 10/20/06 766.28 9.83 763.42 5.16 750.83 13.82 756.23 3.60 721.69 19.61 04/10/07 705.35 8.40 698.20 4.89 694.67 12.76 692.55 2.39 721.61 19.63 09/25/07 702.67 11.08 696.89 6.20 691.35 16.08 686.94 8.00 717.41 23.83 05/02/08 707.14 6.61 698.49 4.60 695.80 11.63 692.74 2.20 722.96 18.28 12/05/08 704.22 9.53 698.08 5.01 693.82 13.61 692.36 2.58 04/16/09 707.47 6.28 698.43 4.66 695.67 11.76 693.33 1.61 722.87 18.37 10/07/09 703.57 10.18 697.81 5.28 692.93 14.50 689.81 5.13 721.70 19.54 04/28/10 705.36 8.39 698.32 4.77 694.41 13.02 692.80 2.14 10/05/10 705.09 8.66 697.84 5.25 693.48 13.95 692.31 2.63 721.13 20.11 05/10/11 706.23 7.52 697.43 5.66 695.15 12.28 693.03 1.91 722.33 18.91 10/06/11 703.25 10.50 697.68 5.41 693.29 14.14 691.55 3.39 719.26 21.98 04/16/12 704.67 9.08 698.39 4.70 694.54 12.89 693.08 1.86 721.34 19.90 10/24/12 703.55 10.20 697.84 5.25 693.11 14.32 692.19 2.75 719.13 22.11 04/24/13 706.10 7.65 698.28 4.81 694.43 13.00 692.94 2.00 721.96 19.28 09/09/13 705.21 8.54 697.94 5.15 693.29 14.14 691.85 3.09 721.66 19.58 04/22/14 707.24 6.51 698.81 4.28 695.49 11.94 693.22 1.72 723.00 18.24 10/01/14 701.58 12.17 696.98 6.11 690.96 16.47 687.74 7.20 717.90 23.34 04/07/15 705.92 7.83 698.06 5.03 694.42 13.01 692.93 2.01 720.64 20.60 10/06/15 705.30 8.45 697.88 5.21 693.42 14.01 692.37 2.57 723.23 18.01 04/18/16 706.34 7.41 698.54 4.55 694.36 13.07 692.79 2.15 721.94 19.30 09/26/16 702.87 10.88 697.68 5.41 691.94 15.49 689.87 5.07 721.03 20.21 04/25/17 707.28 6.47 698.95 4.14 696.82 10.61 693.62 1.32 722.07 19.17 10/16/17 704.53 9.22 697.64 5.45 692.16 15.27 690.25 4.69 720.11 21.13 04/16/18 707.47 6.28 698.88 4.21 695.81 11.62 693.48 1.46 722.80 18.44 10/16/18 704.43 9.32 695.58 7.51 695.64 11.79 692.40 2.54 723.22 18.02 04/08/19 705.26 i 8.49 696.24 6.85 695.31 12.12 692.07 2.87 723.66 i 17.58 10/07/19 701.29 12.46 694.92 8.17 691.89 15.54 689.95 4.99 720.82 20.42 04/20/20 704.35 9.40 696.55 6.54 694.90 12.53 692.04 2.90 722.86 18.38 10/13/20 705.19 i 8.56 696.99 6.10 695.84 11.59 691.99 2.95 724.25 16.99 MEAN 728.38 8.93 722.07 5.76 715.94 13.11 716.34 3.11 721.58 19.68 MAXIMUM 769.48 16.68 764.37 20.04 754.89 16.47 757.97 8.86 724.59 23.83 MINIMUM 701.29 6.28 694.92 4.14 690.96 9.76 686.94 1.32 717.41 16.71 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 6. TOC and Water Elevation Data for dates prior to April 2017 from historical S&ME, Inc. Ground and Surface 7. Well TOC survey conducted 2013-2014 by S&ME, Inc. for more accurate elevations. OLDER 1of1 February 2021 TABLE 2 Summary of Estimated Horizontal Flow Velocities White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.102 October 2020 Gradient Gradient Gradient Horizontal Effective Hydraulic Calculation Flow Segment Length Segment Gradient Porosity Conductivity Velocity Direction Elevations (VgW, feet/year) Segment (feet) (i, feet) (ne) (K, cm/sec) feet i Northwest 1731 ---------690-------- 0.0173 0.02 2.61 E-04 234 i2 North -Northwest 1783 --------690-------- 0.0168 0.02 2.61E-04 227 Average i Average VFW 0.0171 231 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 GOLDER 1of1 February 2021 TABLE 3 Summary of Well Construction Information White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.102 Top -of - Monitoring Well Casing Well Well Screened Interval Geology of Screened Well Northing Easting Date of Construction Depth Diameter Identification Elevation (feet) (inches) (ft bgs) Interval Status (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 I-3 861283.9207 1785321.4743 07/14/89 707.43 24 2 14 24 Sandy Silt Active 14 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 1 34 Sandy Silt Active Notes: 1. it AMSL= feet above mean sea level 2. it 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. +> GOLDER 10f1 February 2021 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.102 Method Practical Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Constituent/Parameter Units Date Detection Limit Quantitation Limit Blanks MW-13 1-1 1-2 1-3 1-4 Arsenic ug/L 03/01/00 ND ND ND ND ND ND NC 2L = 10 ug/L ug/L 09/01/00 ND ND ND ND ND ND EPA MCL = 10 ug/L ug/L 03/01/01 ND ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ND ug/L 10/01/06 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 2.4 J ND ND ND ND ND ug/L 12/05/08 2.8 ND ND ND ND ND ND ug/L 04/16/09 2.8 ND 3.3 J ND 3.3 J 4.7 J ND ug/L 10/07/09 2.8 ND ND ND ND 3.38 J ND ug/L 04/28/10 2.8 ND ND ND ND ND ND ug/L 10/11/10 2.8 ND ND 3.38 B ND 9.10 B -- ug/L 05/10/11 2.8 ND 5.68 J 4.72 J ND ND ND ug/L 10/06/11 2.8 ND ND ND ND ND ND ug/L 04/16/12 2.8 ND 4.23 J ND ND ND ND ug/L 10/24/12 2.8 3.75 J 4.25 J ND ND 5.15 J ND ug/L 04/24/13 2.8 ND ND ND ND ND ND ug/L 09/10/13 5.4 ND ND ND ND ND ND ug/L 04/22/14 5.4 ND 7.71 J ND ND ND ND ug/L 10/06/14 5.4 ND ND ND ND ND ND ug/L 04/07/15 6.8 ND ND ND ND ND ND ug/L 10/07/15 6.8 ND ND ND ND ND ND ug/L 04/26/16 6.8 ND ND ND ND ND ND ug/L 09/28/16 6.8 ND 7.07 J 9.93 J ND ND ND ug/L 04/27/17 6.8 ND ND ND ND ND ND ug/L 10/17/17 6.8 ND ND ND ND ND ND ug/L 04/16/18 6.8 -- 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 Barium ug/L 03/01/00 -- -- ND ND 690 ND 910 ND NC 2L = 700 ug/L ug/L 09/01/00 ND ND ND ND 800 ND EPA MCL = 2000 ug/L ug/L 03/01/01 ND ND ND ND 900 ND ug/L 09/01/01 ND ND ND ND 990 ND ug/L 03/01/02 ND ND ND ND 1300 ND ug/L 09/01/02 ND ND ND ND 540 ND ug/L 04/01/03 ND ND ND ND 780 ND ug/L 10/01/03 ND ND 650 ND 580 ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND 730 ND ND ND ug/L 05/01/05 ND ND ND ND 730 ND ug/L 10/01/05 ND ND 550 ND 870 ND ug/L 04/01/06 ND ND 575 ND 744 ND ug/L 10/01/06 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 -- 371 634 128 964 ND ug/L 12/05/08 1.0 127 1.1 375 180 812 ND ug/L 04/16/09 4.2 -- 580 506 117 693 ND ug/L 10/07/09 1.0 119 230 B 517 B 190 B 556 B -- ug/L 04/28/10 1.0 112 304 489 112 508 ND ug/L 10/11/10 1.0 -- 198 507 135 456 ND ug/L 05/10/11 1.0 108 639 347 160 906 ND ug/L 10/06/11 1.0 115 389 307 170 651 ND ug/L 04/16/12 1.0 112 664 528 153 677 ND ug/L 10/24/12 1.0 104 631 358 163 696 ND ug/L 04/24/13 1.0 120 683 286 149 635 ND ug/L 09/10/13 1.0 85.9 J 590 426 146 585 ND ug/L 04/22/14 1.0 98.7 J 732 483 128 585 ND ug/L 10/06/14 1.0 88.3 J 585 524 136 537 ND ug/L 04/07/15 1.0 105 792 598 156 596 ND ug/L 10/07/15 1.0 93.3 J 484 576 151 376 ND ug/L 04/26/16 1.0 91.3 J 672 513 135 699 ND ug/L 09/28/16 1.0 85.1 J 623 532 135 628 ND ug/L 04/27/17 1.0 96.6 J 693 291 131 554 ND ug/L 10/17/17 1.0 94.1 J 665 465 148 669 ND ug/L 04/16/18 1.0 -- 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 Cadmium ug/L 03/01/00 -- -- ND ND 7.00 ND 4.0 ND NC 2L = 2 ug/L ug/L 09/01/00 ND ND 11 ND 5.0 ND EPA MCL = 5 ug/L ug/L 03/01/01 ND ND 3.4 ND 8.0 ND ug/L 09/01/01 ND ND 5.0 1.6 5.5 ND ug/L 03/01/02 ND 1.0 5.5 1.4 7.5 ND ug/L 09/01/02 ND ND 5.5 ND 1.8 ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND 7.6 1.7 4.5 ND ug/L 03/01/04 ND 1.5 1.9 2.2 3.0 ND ug/L 09/01/04 ND ND 1.1 ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ND ug/L 04/01/06 4.3 ND ND ND ND ND ug/L 10/01/06 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 ND ND ND ND ND ND ug/L 12/05/08 0.36 ND ND ND ND ND ND ug/L 04/16/09 0.09 ND 0.35 B 0.53 B 0.23 B 1.2 B -- ug/L 10/07/09 0.36 ND ND 0.422 J ND 0.914 J ND ug/L 04/28/10 0.36 ND ND ND ND 0.649 J ND ug/L 10/11/10 0.36 ND ND ND ND 0.638 J ND ug/L 05/10/11 0.36 ND ND ND ND ND ND ug/L 10/06/11 0.36 ND ND ND ND ND ND ug/L 04/16/12 0.36 ND ND ND ND ND ND ug/L 10/24/12 0.36 ND ND ND ND 0.494 J ND ug/L 04/24/13 0.36 ND ND ND ND ND ND ug/L 09/10/13 0.36 ND ND ND ND ND ND ug/L 04/22/14 0.36 ND ND ND ND ND ND ug/L 10/06/14 0.36 ND ND ND ND ND ND ug/L 04/07/15 0.36 ND ND ND ND ND ND ug/L 10/07/15 0.36 ND ND ND ND ND ND ug/L 04/26/16 0.36 ND ND ND ND ND ND ug/L 09/28/16 0.36 ND ND ND ND 0.427 J ND ug/L 04/27/17 0.36 ND ND ND ND 0.409 J ND ug/L 10/17/17 0.36 ND ND ND ND ND ND ug/L 04/16/18 0.36 -- 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 ki G❑L❑ER 1of8 February 2021 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.102 Method Practical Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Constituent/Parameter Units Date Detection Limit Quantitation Limit Blanks MW-13 1-1 1-2 1-3 1-4 Chromium ug/L 03/01/00 ND ND 28 12 ND ND NC 2L = 10 ug/L ug/L 09/01/00 ND ND 40 ND ND ND EPA MCL = 100 ug/L ug/L 03/01/01 ND ND 14 ND ND ND ug/L 09/01/01 ND ND ND 10 14 ND ug/L 03/01/02 ND ND ND ND 11 ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND 12 12 10 ND ug/L 03/01/04 ND ND 11 12 12 ND ug/L 09/01/04 ND ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND 18 ND 90 ND ug/L 04/01/06 ND ND 25.7 ND 13.2 ND ug/L 10/01/06 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 ND ND 25.2 ND 91.5 ND ug/L 12/05/08 1 ND ND ND ND ND ND ug/L 04/16/09 0.7 3.4 1 44.2 12.8 52.5 ND ug/L 10/07/09 1 ND ND 20.1 10.4 52.9 ND ug/L 04/28/10 1 ND 1.52 1 6.17 J 4.75 1 37.4 ND ug/L 10/11/10 1 ND ND 11.2 3.40 1 71.4 ND ug/L 05/10/11 1 ND 5.13 1 73.8 15.1 109 ND ug/L 10/06/11 1 1.27 J 2.33 1 12.8 9.49 1 36.4 ND ug/L 04/16/12 1 ND 5.39 1 19.6 14.1 64.0 ND ug/L 10/24/12 1 ND 2.34 1 42.2 8.00 1 51.6 ND ug/L 04/24/13 1.4 1.74 J ND 21.8 2.79 1 39.3 ND ug/L 09/10/13 1.4 ND ND 2.06 J 5.05 1 6.3 J ND ug/L 04/22/14 1.4 ND 2.52 1 8.14 J 5.49 1 12.2 ND ug/L 10/06/14 1.4 ND 2.59 1 12.8 6.34 1 5.58 J ND ug/L 04/07/15 1.4 ND 3.97 1 20.0 9.33 1 9.31 J ND ug/L 10/07/15 1.4 ND 2.66 1 29.9 7.78 1 4.61 J ND ug/L 04/26/16 1.4 ND ND 3.57 J 1.56 1 2.83 J ND ug/L 09/28/16 1.4 ND ND 2.98 J ND ND ND ug/L 04/27/17 1.4 ND ND 7.43 J 1.52 1 2.45 J ND ug/L 10/17/17 1.4 ND 3.94 1 5.66 J 4.38 1 2.36 J ND ug/L 04/16/18 1.4 -- ND 1.76 1 12.6 3.90 1 2.70 J ND ug/L 10/18/18 1.4 10 ND 2.48 1 5.02 J 5.34 1 2.87 J ND ug/L 04/08/19 1.4 10 ND 2.40 1 6.88 J 3.39 1 1.94 J 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 J ND u /L 10/13/20 1.4 10 2.51 J 4.94 1 3.37 J 7.27 1 3.33 J ND Lead ug/L 03/01/00 -- -- ND ND ND ND ND ND NC 2L = 15 ug/L ug/L 09/01/00 ND ND ND ND ND ND EPA MCL = 15 ug/L ug/L 03/01/01 ND ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND 26 ND 16 ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND 62 ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ND ug/L 10/01/06 ND ND ND ND 11.7 ND ug/L 04/10/07 2.0 2.0 6.7 1 2.0 2.9 ND ug/L 09/25/07 -- 2.0 ND 3.6 1 ND ND ND ug/L 05/02/08 2.0 ND ND 5.6 J ND 17.6 ND ug/L 12/05/08 1.9 ND ND ND ND ND ND ug/L 04/16/09 1.6 4.1 1 12.4 3.7 1 19 ND ug/L 10/07/09 1.9 ND ND 3.31 J 2.44 1 14 ND ug/L 04/28/10 1.9 ND ND ND ND 7.98 J ND ug/L 10/11/10 1.9 ND ND 2.01 J ND 16.4 ND ug/L 05/10/11 1.9 ND ND 11.3 2.85 1 34.3 ND ug/L 10/06/11 1.9 ND ND ND ND 8.6 J ND ug/L 04/16/12 1.9 ND 1.9 3.15 J 1.9 15.8 ND ug/L 10/24/12 1.9 ND 2.3 1 11.2 2.79 1 18.7 ND ug/L 04/24/13 1.9 ND ND ND ND 9.79 J ND ug/L 09/10/13 2.1 ND ND ND ND 4.72 J ND ug/L 04/22/14 2.1 ND 3.12 1 4.62 J ND 8.23 J ND ug/L 10/06/14 2.1 ND ND ND ND ND ND ug/L 04/07/15 3.1 ND ND ND ND ND ND ug/L 10/07/15 3.1 ND 3.7 1 4.3 J ND 3.7 J ND ug/L 04/26/16 3.1 ND ND ND ND ND ND ug/L 09/28/16 3.1 ND ND 4.94 J ND 3.56 J ND ug/L 04/27/17 3.1 ND ND ND ND ND ND ug/L 10/17/17 3.1 ND ND ND ND ND ND ug/L 04/16/18 3.1 -- 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 1 ND ND ug/L 04/20/20 3.1 10 ND 3.62 1 ND ND ND ND u /L 10/13/20 3.1 10 ND ND 4.17 J ND 5.07 J ND Mercury ug/L 03/01/00 -- -- ND ND ND ND ND ND NC 2L = 1 ug/L ug/L 09/01/00 ND ND ND ND ND ND EPA MCL = 2 ug/L ug/L 03/01/01 ND ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND 2.4 ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ND ug/L 03/01/04 ND 2.4 ND ND ND ND ug/L 09/01/04 ND 0.9 ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ND ug/L 10/01/06 ND ND ND ND ND ND ug/L 04/10/07 -- 0.14 1 ND ND ND ND ug/L 09/25/07 -- 0.11 3.96 ND ND ND ND ug/L 05/02/08 0.11 ND 0.45 ND ND ND ND ug/L 12/05/08 0.11 ND ND ND ND ND ND ug/L 04/16/09 0.11 0.34 ND ND ND ND ug/L 10/07/09 0.054 ND 0.0867 1 ND ND 0.0638 J ND ug/L 04/28/10 0.17 ND ND ND ND ND ND ug/L 10/11/10 0.17 ND ND ND ND ND ND ug/L 05/10/11 0.17 ND ND ND ND ND ND ug/L 10/06/11 0.17 ND ND ND ND ND ND ug/L 04/16/12 0.17 ND 0.237 ND ND ND ND ug/L 10/24/12 0.17 ND ND ND ND ND ND ug/L 04/24/13 0.17 ND ND ND ND ND ND ug/L 09/10/13 0.17 ND ND ND ND ND ND ug/L 04/22/14 0.17 ND ND ND ND ND ND ug/L 10/06/14 0.17 ND ND ND ND ND ND ug/L 04/07/15 0.17 ND ND ND ND ND ND ug/L 10/07/15 0.17 ND ND ND ND ND ND ug/L 04/26/16 0.17 ND ND ND ND ND ND ug/L 09/28/16 0.17 ND ND ND ND ND ND ug/L 04/27/17 0.17 ND 0.174 1 ND ND ND ND ug/L 10/17/17 0.17 ND 0.667 ND ND ND ND ug/L 04/16/18 0.17 -- 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 u /L 10/13/20 0.15 0.20 ND ND ND ND ND ND ki G❑L❑ER 2ot8 February 2021 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.102 Method Practical Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Constituent/Parameter Units Date Detection Limit Quantitation Limit Blanks MW-13 1-1 1-2 1-3 1-4 Selenium ug/L 03/01/00 ND ND ND ND ND ND NC 2L = 20 ug/L ug/L 09/01/00 ND ND ND ND ND ND EPA MCL = 50 ug/L ug/L 03/01/01 ND ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ND ug/L 10/01/06 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 ND ND ND ND ND ND ug/L 12/05/08 2.7 ND ND ND ND ND ND ug/L 04/16/09 3.4 ND ND ND ND ND ug/L 10/07/09 2.7 ND ND ND ND ND ND ug/L 04/28/10 0.83 ND ND ND ND ND ND ug/L 10/11/10 2.7 1.31 J 2.7 2.7 2.7 5.55 J ND ug/L 05/10/11 0.83 1.07 J ND ND ND ND ND ug/L 10/06/11 2.7 ND ND ND ND ND ND ug/L 04/16/12 2.7 ND ND ND ND ND ND ug/L 10/24/12 4.5 ND ND ND ND ND ND ug/L 04/24/13 4.5 ND ND ND ND ND ND ug/L 09/10/13 5.0 ND ND ND ND ND ND ug/L 04/22/14 5.0 ND ND ND ND ND ND ug/L 10/06/14 5.0 ND ND ND ND ND ND ug/L 04/07/15 5.0 ND ND ND ND ND ND ug/L 10/07/15 5.0 ND ND ND ND ND ND ug/L 04/26/16 6.2 ND ND ND ND ND ND ug/L 09/28/16 6.2 ND ND ND ND ND ND ug/L 04/27/17 6.2 ND ND ND ND ND ND ug/L 10/17/17 6.2 ND ND ND ND ND ND ug/L 04/16/18 6.2 -- 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 u /L 10/13/20 6.2 10 ND ND ND ND ND ND Silver ug/L 03/01/00 -- -- ND ND ND ND ND ND NC 2L = 20 ug/L ug/L 09/01/00 ND ND ND ND ND ND EPA MCL = 100 ug/L ug/L 03/01/01 ND ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ND ug/L 10/01/06 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 ND ND ND ND ND ND ug/L 12/05/08 1.9 ND ND ND ND ND ND ug/L 04/16/09 1.0 5.2 1 2.1 J 5 1 ND ND ug/L 10/07/09 1.9 ND 2.34 1 3.35 J 3.53 1 2.44 J ND ug/L 04/28/10 1.9 ND 5.16 1 6.91 J 5.57 1 2.93 J ND ug/L 10/11/10 1.9 ND 2 1 ND 3.56 1 ND ND ug/L 05/10/11 1.9 ND 2.04 1 ND 3.07 1 3.11 J ND ug/L 10/06/11 1.9 ND ND ND 1.92 1 1.9 J ND ug/L 04/16/12 1.9 ND 3.7 1 4.39 J 4.54 1 5.39 J ND ug/L 10/24/12 1.9 ND ND 2.94 J ND 3.8 J ND ug/L 04/24/13 1.9 ND 4.22 1 2.96 J 4.42 1 ND ND ug/L 09/10/13 1.9 ND ND 2.16 J 2.59 1 2.62 J ND ug/L 04/22/14 1.9 ND ND ND ND ND ND ug/L 10/06/14 1.9 ND ND ND ND ND ND ug/L 04/07/15 1.9 ND 2.16 1 2.18 J ND ND ND ug/L 10/07/15 1.9 2.79 J ND ND ND ND ND ug/L 04/26/16 1.9 ND ND ND ND ND ND ug/L 09/28/16 1.9 ND ND ND ND ND ND ug/L 04/27/17 1.9 ND 2.04 1 ND 2.66 1 ND ND ug/L 10/17/17 1.9 ND ND ND ND ND ND ug/L 04/16/18 1.9 -- ND ND ND ND 2.23 J 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 u /L 10/13/20 1.9 10 ND ND ND ND ND ND Acetone ug/L 03/01/00 -- -- ND ND ND ND ND ND NC 2L = 6000 ug/L ug/L 09/01/00 ND ND ND ND ND ND (No EPA MCL) ug/L 03/01/01 ND ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ND ug/L 10/01/06 ND ND ND ND ND ND ug/L 04/10/07 ND ND ND 33 1 1.4 J ND ug/L 09/25/07 -- 3.8 B 5.8 1 7.1 J 9.1 1 20 J ND ug/L 05/02/08 0.62 ND ND ND ND ND ND ug/L 12/05/08 1.5 ND 0.37 6.4 J 5.6 1 6.1 J ND ug/L 04/16/09 1.5 15 1 ND ND ND ND ug/L 10/07/09 2.8 ND ND ND ND ND ND ug/L 10/14/09 1.5 ND ND ug/L 04/28/10 1.5 ND ND ND ND ND ND ug/L 10/11/10 1.5 ND ND ND ND ND ND ug/L 05/10/11 1.2 ND ND ND ND 4.1 J ND ug/L 10/06/11 1.2 ND ND ND ND 5.7 J ND ug/L 04/16/12 1.2 ND 3.8 1 ND ND ND ND ug/L 10/24/12 1.2 ND 12 1 ND ND 12 J ND ug/L 04/24/13 0.96 ND ND ND ND ND ND ug/L 09/10/13 1.2 ND ND ND ND 8.6 J ND ug/L 04/22/14 1.2 ND ND ND ND ND ND ug/L 10/06/14 1.2 ND ND ND ND ND ND ug/L 04/07/15 1.2 ND ND ND ND 3.6 J ND ug/L 10/07/15 1.2 ND ND ND ND ND ND ug/L 04/26/16 1.2 ND ND ND ND ND ND ug/L 09/28/16 10 ND ND ND ND ND ND ug/L 04/27/17 10 16 B 20 B 32 B 19 B 31 B 20 1 ug/L 10/17/17 10 ND ND ND ND ND ND ug/L 04/16/18 10 -- ND ND ND ND 14 J 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 J 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 u /L 10/13/20 10 20 ND ND ND ND ND ND ki G❑L❑ER 3of8 February 2021 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.102 Method Practical Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Constituent/Parameter Units Date Detection Limit Quantitation Limit Blanks MW-13 1-1 1-2 1-3 1.4 Benzene ug/L 03/01/00 ND ND ND ND ND ND NC 2L = 1 ug/L ug/L 09/01/00 ND ND ND ND ND ND EPA MCL = 5 ug/L ug/L 03/01/01 ND ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ND ug/L 10/01/06 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 J ND ug/L 05/02/08 0.2 ND 1.7 ND ND 0.43 J ND ug/L 12/05/08 0.2 ND 162 ND 0.51 1 ND ND ug/L 04/16/09 0.2 ND ND ND ND ND ug/L 10/07/09 0.2 ND 1.6 ND 0.51 1 ND ND ug/L 04/28/10 0.05 ND 1.7 ND ND ND ND ug/L 10/11/10 0.2 ND 1.5 ND 0.49 1 ND ND ug/L 05/10/11 0.68 ND 2.7 ND ND ND ND ug/L 10/06/11 0.68 ND 1.8 ND ND ND ND ug/L 04/16/12 0.15 ND 2.8 ND ND ND ND ug/L 10/24/12 0.15 ND 2.2 0.15 0.44 1 0.15 ND ug/L 04/24/13 0.25 ND 3.5 ND 0.34 1 ND ND ug/L 09/10/13 0.15 ND 3.0 ND ND ND ND ug/L 04/22/14 0.15 ND 3.5 ND ND ND ND ug/L 10/06/14 0.15 ND 3.9 0.54 J ND ND ND ug/L 04/07/15 0.15 ND 3.7 ND ND ND ND ug/L 10/07/15 0.15 ND 3.3 ND 0.58 1 ND ND ug/L 04/26/16 0.15 ND 3.9 ND ND ND ND ug/L 09/28/16 0.15 ND 4.3 ND 0.52 1 ND ND ug/L 04/27/17 0.15 ND 5.4 ND ND ND ND ug/L 10/17/17 0.15 ND 4.4 ND ND ND ND ug/L 04/16/18 0.15 -- 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 Bromoform ug/L 03/01/00 -- -- ND ND ND ND ND NC 2L = 4 ug/L ug/L 09/01/00 ND ND ND ND ND EPA MCL = 80 ug/L ug/L 03/01/01 ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ug/L 10/01/06 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 ND ND ND ND ND ug/L 12/05/08 0.71 ND 7.1 J ND ND ND ug/L 04/16/09 0.71 ND ND ND ND ug/L 10/07/09 0.71 ND ND ND ND ND ug/L 04/28/10 0.2 ND ND ND ND ND ND ug/L 10/11/10 0.71 ND ND ND ND ND ND ug/L 05/10/11 0.68 ND ND ug/L 10/06/11 0.68 ND ND ND ND ND ND ug/L 04/16/12 0.22 ND ND ND ND ND ND ug/L 10/24/12 0.22 ND ND ND ND ND ND ug/L 04/24/13 0.33 ND ND ND ND ND ND ug/L 09/10/13 0.22 ND ND ND ND ND ND ug/L 04/22/14 0.22 ND ND ND ND ND ND ug/L 10/06/14 0.22 ND ND ND ND ND ND ug/L 04/07/15 0.22 ND ND ND ND ND ug/L 10/07/15 0.22 ND ND ND ND ND ug/L 04/26/16 0.22 ND ND ND ND ND ug/L 09/28/16 0.22 ND ND ND ND ND ug/L 04/27/17 0.22 ND ND ND ND ND ND ug/L 10/17/17 0.22 ND ND ND ND ND ND ug/L 04/16/18 0.22 -- 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 Carbon Tetrachloride ug/L 03/01/00 -- -- ND ND ND ND ND NC 2L = 0.3 ug/L ug/L 09/01/00 ND ND ND ND ND EPA MCL = 5 ug/L ug/L 03/01/01 ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ug/L 10/01/06 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 ND ND ND ND ND ug/L 12/05/08 0.38 ND ND ND ND ND ug/L 04/16/09 0.38 ND ND ND ND ug/L 10/07/09 0.38 ND ND ND ND ND ug/L 04/28/10 0.082 ND ND ND ND ND ND ug/L 10/11/10 0.38 ND ND ND ND ND ND ug/L 05/10/11 0.69 ND ND ND ND ND ND ug/L 10/06/11 0.69 ND ND ND ND ND ND ug/L 04/16/12 0.17 ND ND ND ND ND ND ug/L 10/24/12 0.17 ND ND ND ND ND ND ug/L 04/24/13 0.34 ND ND ND ND ND ND ug/L 09/10/13 0.17 ND ND 0.17 ND ND ND ug/L 04/22/14 0.17 ND ND ND ND ND ND ug/L 10/06/14 0.17 ND ND ND ND ND ND ug/L 04/07/15 0.17 ND ND ND ND ND ug/L 10/07/15 0.17 ND ND ND ND ND ug/L 04/26/16 0.17 ND ND ND ND ND ug/L 09/28/16 0.17 ND ND ND ND ND ug/L 04/27/17 0.17 ND ND ND ND ND ND ug/L 10/17/17 0.17 ND ND ND ND ND ND ug/L 04/16/18 0.17 -- 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 i GC]LDER 4of8 February 2021 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.102 Method Practical Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Constituent/Parameter Units Date Detection Limit Quantitation Limit Blanks MW-13 1-1 1-2 1-3 1.4 Chlorobenzene ug/L 03/01/00 ND ND ND ND 5.4 ND NC 2L = 50 ug/L ug/L 09/01/00 ND ND ND 6.2 6.7 ND EPA MCL = 100 ug/L ug/L 03/01/01 ND ND ND 6.7 8.2 ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND 7.5 ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND 6.7 ND ug/L 10/01/03 ND ND ND 8.3 10 ND ug/L 03/01/04 ND ND ND 7.7 9.8 ND ug/L 09/01/04 ND ND ND 11 ND ND ug/L 05/01/05 ND ND ND 8 9 ND ug/L 10/01/05 ND ND 5 14 5 ND ug/L 04/01/06 ND ND ND 9.6 9.8 ND ug/L 10/01/06 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 ND 4.6 5.8 9.8 9.4 ND ug/L 12/05/08 0.27 ND 0.38 1.8 J 12 5.6 ND ug/L 04/16/09 0.27 7.2 4.3 6.7 6.1 ND ug/L 10/07/09 0.27 ND 3.3 6.2 15 5.6 ND ug/L 04/28/10 0.069 ND 3.9 6.2 12 5.5 ND ug/L 10/11/10 0.27 ND 3.2 6.4 16 3.9 ND ug/L 05/10/11 0.74 ND 6.3 1.4 J 9.3 5.6 ND ug/L 10/06/11 0.74 ND 5.1 3.4 15 7.8 ND ug/L 04/16/12 0.17 ND 7.3 4.7 7.4 4.2 ND ug/L 10/24/12 0.17 ND 5.8 3 15 7.4 ND ug/L 04/24/13 0.26 ND 8.1 1.7 J 10 4.2 ND ug/L 09/10/13 0.17 ND 7.6 5.4 12 7.7 ND ug/L 04/22/14 0.17 ND 11 4.8 8.2 7.6 ND ug/L 10/06/14 0.17 ND 9.8 8.1 9.5 9.3 ND ug/L 04/07/15 0.17 ND 11 6.2 13 7.1 ND ug/L 10/07/15 0.17 ND 7.2 8.0 18 0.67 J ND ug/L 04/26/16 0.17 ND 10 6.0 8.3 4.4 ND ug/L 09/28/16 0.17 ND 11 8.7 17 3.9 ND ug/L 04/27/17 0.17 ND 13 3.3 10 4.2 ND ug/L 10/17/17 0.17 ND 12 7.6 16 2.9 J ND ug/L 04/16/18 0.17 -- 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 Chloroethane ug/L 03/01/00 -- -- ND ND ND ND ND NC 2L = 3000 ug/L ug/L 09/01/00 ND ND ND ND ND (No EPA MCL) ug/L 03/01/01 ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ug/L 10/01/06 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 ND ND ND ND ND ug/L 12/05/08 0.3 ND 1.8 1 ND ND ND ug/L 04/16/09 0.3 ND ND ND ND ug/L 10/07/09 0.3 ND ND ND ND ND ug/L 04/28/10 0.18 ND ND ND ND ND ND ug/L 10/11/10 0.3 ND ND ND ND ND ND ug/L 05/10/11 0.75 ND ND ND ND ND ND ug/L 10/06/11 0.75 ND ND ND ND ND ND ug/L 04/16/12 0.23 ND ND ND ND ND ND ug/L 10/24/12 0.23 ND ND ND ND ND ND ug/L 04/24/13 0.53 ND ND ND ND ND ND ug/L 09/10/13 0.23 ND ND ND ND ND ND ug/L 04/22/14 0.23 ND ND ND ND ND ND ug/L 10/06/14 0.23 ND ND ND ND ND ug/L 04/07/15 0.23 ND ND ND ND ND ug/L 10/07/15 0.23 ND ND ND ND ND ug/L 04/26/16 0.23 ND ND ND ND ND ug/L 09/28/16 0.23 ND ND ND ND ND ug/L 04/27/17 0.23 ND ND ND ND ND ND ug/L 10/17/17 0.23 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 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 1,2-Dichlorobenzene ug/L 03/01/00 -- -- ND ND ND ND ND ND NC 2L = 20 ug/L ug/L 09/01/00 ND ND ND ND ND ND EPA MCL = 600 ug/L ug/L 03/01/01 ND ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ND ug/L 10/01/06 ND ND ND ND ND ND ug/L 04/10/07 ND ND 1.2 J 0.84 1 0.60 J ND ug/L 09/25/07 -- ND ND 1.2 J 0.79 1 0.48 J ND ug/L 05/02/08 0.27 ND ND 1 J 0.49 1 ND ND ug/L 12/05/08 0.27 ND 0.42 ND 0.75 1 ND ND ug/L 04/16/09 0.27 ND 1.1 J 0.59 1 0.41 J ND ug/L 10/07/09 0.27 ND ND 1.5 J 0.85 1 ND ND ug/L 04/28/10 0.052 ND ND 1.4 J 0.73 1 ND ND ug/L 10/11/10 0.27 ND ND 1.3 J 0.88 1 ND ND ug/L 05/10/11 0.11 ND ND ND ND ND ND ug/L 10/06/11 0.11 ND ND 0.74 J 0.79 1 ND ND ug/L 04/16/12 0.19 ND ND 0.78 J 0.45 1 ND ND ug/L 10/24/12 0.19 ND ND 0.56 J 0.81 1 ND ND ug/L 04/24/13 0.39 ND ND ND 0.59 1 ND ND ug/L 09/10/13 0.19 ND ND 0.85 J 0.67 1 0.41 J ND ug/L 04/22/14 0.19 ND ND 0.92 J 0.55 1 ND ND ug/L 10/06/14 0.19 ND ND 1.3 ND ND ND ug/L 04/07/15 0.19 ND 0.41 1 1.3 J 0.7 1 ND ND ug/L 10/07/15 0.19 ND ND 1.4 J 0.84 1 ND ND ug/L 04/26/16 0.19 ND ND 1.1 J 0.44 1 ND ND ug/L 09/28/16 0.19 ND ND 1.5 J 0.83 1 ND ND ug/L 04/27/17 0.19 ND ND 0.94 J 0.56 1 ND ND ug/L 10/17/17 0.19 ND ND 1.5 J 0.82 1 ND ND ug/L 04/16/18 0.19 -- ND ND 1.5 J 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 J ND ND ND i GC]LDER 5of8 February 2021 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.102 Method Practical Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Constituent/Parameter Units Date Detection Limit Quantitation Limit Blanks MW-13 1-1 1-2 1-3 1.4 1,4-Dichlorobenzene ug/L 03/01/00 ND ND ND ND ND ND NC 2L = 6 ug/L ug/L 09/01/00 ND ND ND ND ND ND EPA MCL = 75 ug/L ug/L 03/01/01 ND ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND ND ND 5.6 ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND ND ND 5.6 ND ug/L 05/01/05 ND ND ND ND 5.0 ND ug/L 10/01/05 ND 5.0 ND 6.0 ND ND ug/L 04/01/06 ND ND ND ND 5.0 ND ug/L 10/01/06 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 ND 4.6 1.7 3.8 5.1 ND ug/L 12/05/08 0.38 ND 0.27 1.8 4.0 3.5 ND ug/L 04/16/09 0.38 5.1 1.4 2.9 4.6 ND ug/L 10/07/09 0.38 ND ND ND 4.6 4.1 ND ug/L 04/28/10 0.1 ND 4.2 1.6 4.1 3.8 ND ug/L 10/11/10 0.38 ND 3.9 1.6 4.5 2.3 ND ug/L 05/10/11 0.79 ND 3.4 ND ND ND ND ug/L 10/06/11 0.79 ND 3.6 ND 3.9 3.7 ND ug/L 04/16/12 0.19 ND 3.6 1.0 2.3 2.5 ND ug/L 10/24/12 0.19 ND 3.1 1.4 3.9 3.2 ND ug/L 04/24/13 0.14 ND ND 0.82 J 2.9 2.4 ND ug/L 09/10/13 0.19 ND 3.6 ND 3.1 3.9 ND ug/L 04/22/14 0.19 ND 5.1 1.0 2.7 4.6 ND ug/L 10/06/14 0.19 ND 4.9 1.6 2.2 5.0 ND ug/L 04/07/15 0.19 ND 5.3 1.2 3.5 3.4 ND ug/L 10/07/15 0.19 ND 3.6 1.7 4.7 0.53 J ND ug/L 04/26/16 0.19 ND 4.7 1.3 2.4 2.4 ND ug/L 09/28/16 0.19 ND 4.7 1.6 4.2 2.7 ND ug/L 04/27/17 0.19 ND 6.1 ND 3.0 3.2 ND ug/L 10/17/17 0.19 ND 5.5 2.1 4.5 3.8 ND ug/L 04/16/18 0.19 -- 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 J 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 J 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 1,1-Dichloroethane ug/L 03/01/00 -- -- ND ND ND ND ND ND NC 2L = 6 ug/L ug/L 09/01/00 ND ND ND 5.8 ND ND (No EPA MCL) ug/L 03/01/01 ND ND ND 5.0 ND ND ug/L 09/01/01 ND ND ND 5.6 ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND 5.0 ND ND ug/L 04/01/06 ND ND ND ND ND ND ug/L 10/01/06 ND ND ND ND ND ND ug/L 04/10/07 ND 1.3 1 ND 1.6 1 ND ND ug/L 09/25/07 -- ND 1.7 1 ND 2.9 1 ND ND ug/L 05/02/08 0.33 ND 1.3 1 ND 2.0 1 ND ND ug/L 12/05/08 0.33 ND 0.54 ND 3.2 1 ND ND ug/L 04/16/09 0.33 1.0 1 ND 1.4 1 ND ND ug/L 10/07/09 0.33 ND 1.4 1 ND 2.6 1 ND ND ug/L 04/28/10 0.05 ND 1.2 1 ND 2.0 1 ND ND ug/L 10/11/10 0.33 ND 1.4 1 ND 2.6 1 ND ND ug/L 05/10/11 0.08 ND 0.97 1 0.08 2.0 1 ND ND ug/L 10/06/11 0.08 ND 1.2 1 ND 2.3 1 ND ND ug/L 04/16/12 0.13 ND 1.0 1 ND 1.5 1 ND ND ug/L 10/24/12 0.13 ND 0.72 1 ND 2.3 1 ND ND ug/L 04/24/13 0.28 ND 0.71 1 ND 1.9 1 ND ND ug/L 09/10/13 0.13 ND 0.67 1 0.13 2.2 1 ND ND ug/L 04/22/14 0.13 ND 0.56 1 ND 1.2 1 ND ND ug/L 10/06/14 0.13 ND 0.74 1 ND 1.5 ND ND ug/L 04/07/15 0.13 ND ND ND 1.5 1 ND ND ug/L 10/07/15 0.13 ND 1.0 1 ND 3.2 1 ND ND ug/L 04/26/16 0.13 ND 0.45 1 ND 2.0 1 ND ND ug/L 09/28/16 0.13 ND 0.86 1 ND 2.9 1 ND ND ug/L 04/27/17 0.13 ND 0.47 1 ND 1.6 1 ND ND ug/L 10/17/17 0.13 ND 0.52 1 ND 2.6 1 ND ND ug/L 04/16/18 0.13 -- ND 0.50 1 ND 1.3 1 ND ND ug/L 10/18/18 0.13 1.0 ND 0.51 1 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 1 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 1 ND 1.5 ND ND 1,2-Dichloroethane ug/L 03/01/00 -- -- ND ND ND ND ND NC 2L = 0.4 ug/L ug/L 09/01/00 ND ND ND ND ND EPA MCL = 5 ug/L ug/L 03/01/01 ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ug/L 10/01/06 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 ND ND ND ND ND ug/L 12/05/08 0.65 ND 1.6 J ND ND ND ug/L 04/16/09 0.65 ND ND ND ND ug/L 10/07/09 0.65 ND ND ND ND ND ug/L 04/28/10 0.082 ND ND ND ND ND ND ug/L 10/11/10 0.65 ND ND ND ND ND ND ug/L 05/10/11 0.47 ND ND ND ND ND ND ug/L 10/06/11 0.47 ND ND ND ND ND ND ug/L 04/16/12 0.21 ND ND ND ND ND ND ug/L 10/24/12 0.21 ND ND ND ND ND ND ug/L 04/24/13 0.24 ND ND ND ND ND ND ug/L 09/10/13 0.21 ND ND ND ND ND ND ug/L 04/22/14 0.21 ND ND ND ND ND ND ug/L 10/06/14 0.21 ND ND ND ND ND ug/L 04/07/15 0.21 ND ND ND ND ND ug/L 10/07/15 0.21 ND ND ND ND ND ug/L 04/26/16 0.21 ND ND ND ND ND ug/L 09/28/16 0.21 ND ND ND ND ND ug/L 04/27/17 0.21 ND ND ND ND ND ND ug/L 10/17/17 0.21 ND ND ND ND ND ND ug/L 04/16/18 0.21 -- 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 i GC]LDER 6ofa February 2021 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.102 Method Practical Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Constituent/Parameter Units Date Detection Limit Quantitation Limit Blanks MW-13 1-1 1-2 1-3 1-4 1,1-Dichloroethene ug/L 03/01/00 ND ND ND ND ND ND NC 2L = 7 ug/L ug/L 09/01/00 ND ND ND ND ND ND EPA MCL = 7 ug/L ug/L 03/01/01 ND ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ND ug/L 10/01/06 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 1 ND ND ug/L 05/02/08 0.2 ND ND ND ND ND ND ug/L 12/05/08 0.24 ND 0.65 ND 0.56 1 ND ND ug/L 04/16/09 0.24 ND ND ND ND ND ug/L 10/07/09 0.24 ND ND ND 0.46 1 ND ND ug/L 04/28/10 0.15 ND ND ND ND ND ND ug/L 10/11/10 0.24 ND ND ND 0.48 1 ND ND ug/L 05/10/11 0.6 ND ND ND ND ND ND ug/L 10/06/11 0.6 ND ND ND ND ND ND ug/L 04/16/12 0.21 ND ND ND ND ND ND ug/L 10/24/12 0.21 ND ND ND 0.4 1 ND ND ug/L 04/24/13 0.31 ND ND ND 0.37 1 ND ND ug/L 09/10/13 0.21 ND ND ND 0.47 1 ND ND ug/L 04/22/14 0.21 ND ND ND ND ND ND ug/L 10/06/14 0.21 ND ND ND ND ND ND ug/L 04/07/15 0.21 ND ND ND ND ND ND ug/L 10/07/15 0.21 ND ND ND ND ND ND ug/L 04/26/16 0.21 ND ND ND ND ND ND ug/L 09/28/16 0.21 ND ND ND 0.8 1 ND ND ug/L 04/27/17 0.21 ND ND ND ND ND ND ug/L 10/17/17 0.21 ND ND ND 0.68 1 ND ND ug/L 04/16/18 0.21 -- 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 1 ND ND ug/L 04/20/20 0.21 1.0 ND ND ND ND ND ND u /L 10/13/20 0.21 1.0 ND ND ND ND ND ND cis- 1,2-Dichloroethene ug/L 03/01/00 -- -- ND ND ND ND ND ND NC 2L = 70 ug/L ug/L 09/01/00 ND ND ND ND ND ND EPA MCL = 70 ug/L ug/L 03/01/01 ND ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ND ug/L 10/01/06 ND ND ND ND ND ND ug/L 04/10/07 ND ND 0.34 J 0.69 1 ND ND ug/L 09/25/07 -- ND 2.2 1 0.45 J 1.3 1 0.14 ND ug/L 05/02/08 0.30 ND 1.3 1 0.42 J 0.77 1 ND ND ug/L 12/05/08 0.36 ND ND ND ND ND ND ug/L 04/16/09 0.36 1.2 1 0.58 J 0.67 1 ND ND ug/L 10/07/09 0.36 ND 2.4 1 0.62 J 1.4 1 ND ND ug/L 04/28/10 0.075 ND 1.9 1 0.61 J 0.87 1 ND ND ug/L 10/11/10 0.36 ND 2.2 1 0.51 J 1.1 1 ND ND ug/L 05/10/11 0.72 ND 1.1 1 ND 0.89 1 ND ND ug/L 10/06/11 0.72 ND 1.5 1 ND 1.1 1 ND ND ug/L 04/16/12 0.15 ND 0.86 1 0.55 J 0.63 1 ND ND ug/L 10/24/12 0.15 ND 0.62 1 ND 0.8 1 ND ND ug/L 04/24/13 0.27 ND 0.73 1 ND 0.85 1 ND ND ug/L 09/10/13 0.15 ND 0.98 1 0.48 J 0.87 1 ND ND ug/L 04/22/14 0.15 ND 0.52 1 ND ND ND ND ug/L 10/06/14 0.15 ND 0.61 1 ND ND ND ND ug/L 04/07/15 0.15 ND 0.44 1 ND 0.52 1 ND ND ug/L 10/07/15 0.15 ND 0.94 1 0.41 J 0.87 1 ND ND ug/L 04/26/16 0.15 ND 0.51 1 ND 0.43 1 ND ND ug/L 09/28/16 0.15 0.15 0.77 1 ND ND ND ND ug/L 04/27/17 0.15 ND 0.57 1 ND 0.49 1 ND ND ug/L 10/17/17 0.15 ND 0.47 1 ND 0.64 1 ND ND ug/L 04/16/18 0.15 -- ND 0.56 1 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 1 ND ND ND ND ug/L 10/09/19 0.15 1.0 ND 0.57 1 0.41 J 0.51 1 ND ND ug/L 04/20/20 0.15 1.0 ND ND ND ND ND ND u /L 10/13/20 0.15 1.0 ND 0.87 1 0.44 J ND ND ND Methylene Chloride ug/L 03/01/00 -- -- ND ND ND ND ND ND NC 2L = 5 ug/L ug/L 09/01/00 ND ND ND ND ND ND EPA MCL = 5 ug/L ug/L 03/01/01 ND ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ND ug/L 10/01/06 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 ND ND ND ND ND ND ug/L 12/05/08 0.53 ND ND ND ND ND ND ug/L 04/16/09 0.53 ND ND ND ND ND ug/L 10/07/09 0.53 ND 0.76 1 ND ND ND ND ug/L 04/28/10 0.07 ND ND ND ND ND ND ug/L 10/11/10 0.53 ND 0.77 1 ND ND ND ND ug/L 05/10/11 0.14 ND ND ND ND ND ND ug/L 10/06/11 0.14 ND ND ND ND ND ND ug/L 04/16/12 0.23 ND 0.37 1 ND ND ND ND ug/L 10/24/12 0.23 ND ND ND ND ND ND ug/L 04/24/13 0.50 ND ND ND ND ND ND ug/L 09/10/13 0.23 ND ND ND ND ND ND ug/L 04/22/14 0.23 ND ND ND ND ND ND ug/L 10/06/14 0.23 ND ND ND ND ND ND ug/L 04/07/15 0.23 ND ND ND ND ND ND ug/L 10/07/15 0.23 ND ND ND ND ND ND ug/L 04/26/16 0.23 ND ND ND ND ND ND ug/L 09/28/16 0.23 ND ND ND ND ND ND ug/L 04/27/17 0.23 ND ND ND ND ND ND ug/L 10/17/17 0.23 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 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 u /L 10/13/20 0.23 1.0 ND ND ND ND ND ND ki G❑L❑ER 7of8 February 2021 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.102 Method Practical Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Constituent/Parameter Units Date Detection Limit Quantitation Limit Blanks MW-13 1-1 1-2 1-3 1.4 Vinyl Chloride ug/L 03/01/00 ND ND ND ND ND ND NC 2L = 0.03 ug/L ug/L 09/01/00 ND ND ND ND ND ND EPA MCL = 2 ug/L ug/L 03/01/01 ND ND ND ND ND ND ug/L 09/01/01 ND ND ND ND ND ND ug/L 03/01/02 ND ND ND ND ND ND ug/L 09/01/02 ND ND ND ND ND ND ug/L 04/01/03 ND ND ND ND ND ND ug/L 10/01/03 ND ND ND ND ND ND ug/L 03/01/04 ND ND ND ND ND ND ug/L 09/01/04 ND ND ND ND ND ND ug/L 05/01/05 ND ND ND ND ND ND ug/L 10/01/05 ND ND ND ND ND ND ug/L 04/01/06 ND ND ND ND ND ND ug/L 10/01/06 ND ND ND ND ND ND ug/L 04/10/07 0.15 J 0.72 J 0.54 J 0.63 J ND ND ug/L 09/25/07 ND 0.56 J ND 0.77 J ND ND ug/L 05/02/08 0.3 ND 0.64 J 0.9 J 0.65 J ND ND ug/L 12/05/08 0.3 ND 0.36 ND 0.67 J ND ND ug/L 04/16/09 0.3 ND 0.46 J ND ND ND ug/L 10/07/09 0.3 ND 0.49 J ND ND ND ND ug/L 04/28/10 0.083 ND 0.52 J 0.62 J 0.44 J ND ND ug/L 10/11/10 0.3 ND 0.51 J ND ND ND ND ug/L 05/10/11 0.6 ND ND ND ND ND ND ug/L 10/06/11 0.6 ND ND ND ND ND ND ug/L 04/16/12 0.32 ND 0.45 J 0.48 J ND ND ND ug/L 10/24/12 0.32 ND ND ND ND ND ND ug/L 04/24/13 0.28 ND 0.45 J ND 0.45 J ND ND ug/L 09/10/13 0.32 ND ND 0.45 J ND ND ND ug/L 04/22/14 0.32 ND ND ND ND ND ND ug/L 10/06/14 0.32 ND ND ND ND ND ND ug/L 04/07/15 0.32 ND ND ND ND ND ND ug/L 10/07/15 0.32 ND ND 0.65 J 0.59 J ND ND ug/L 04/26/16 0.32 ND ND ND 0.47 J ND ND ug/L 09/28/16 0.32 ND ND ND 0.52 J ND ND ug/L 04/27/17 0.32 ND ND ND ND ND ND ug/L 10/17/17 0.32 NO ND ND 0.45 J ND ND ug/L 04/16/18 0.32 NO 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 u /L 10/13/20 0.32 1.0 ND ND ND ND ND ND 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 NO 210 33 46 55 ND ug/L 10/09/19 1.2 2.0 NO 250 140 360 43 ND ug/L 04/20/20 0.80 2.0 NO 210 64 70 42 ND u /L 10/13/20 0.80 2.0 ND 200 120 200 39 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 Lim! 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 an B = blank -qualified date ND = not detected above the laboratory detection limit or stated reporting lim -- = no data available or no limit establishec # = EPA Action Level = EPA Secondary MCL Blanks = field, trip and method blank; 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 Iimi 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 electroni The following dilutions were noted for the October 2020 event: 1,4-dioxane by (5x) in 1-1 & 1-2, (2x) in II-2 SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on C i GC]LDER 8ofa February 2021 19131339.102 TABLES Summary of Groundwater Field Parameters White Street Lamiflll - Phase I, Permit No. 41-03 Greensboro, North Carolina Detached Monitoring Reporting Sample U radiant Well Down radienl Wells Constltuent/Parometor Units Data MW-13 1-1 I-2 13 1-4 PH(Fieldi S.U. 03/2]/00 6.61 8.31 8.69 ].1] 8.67 S.U. 09/13/00 15.70 8.59 5.64 8.88 8.69 S.U. 03/12/01 6.55 5.82 8.19 8.3d S.U. 09/1310 8.29 5.58 8.01 8.25 8.60 S.U. 03/07/02 7.48 5.59 8.02 6.28 8.80 S.U. 09/18/02 8.64 5.77 8.08 8.37 8.86 S.U. 04/15/03 6.08 8.39 8.81 8.]i S.U. 10/15/03 8.75 5.79 8.31 8.64 6.]5 S.U. 03/24/04 8.02 7.80 7.81 7.60 8.17 S.U. 09122/Od 6.96 5.94 6.76 6.60 8.96 S.U. 051f0/OS 8.58 8.03 8.14 8.27 8.50 S.U. 10/11/05 6.5 5.54 5.95 8.18 8.60 S.U. 04/24/06 - 5.65 6.21 8.60 6.89 S.U. 10/16/06 5.49 5.98 8.19 6.60 S.U. 04/10/07 6.35 5.62 8.19 8.68 6.95 S.U. 0915107 6.49 5.84 8.18 8.36 8.69 %1 S.U. 0 1 V08 6.48 5.80 Noo 8.31 8.61 S.U. 12/0S/08 7.29 8.83 8.50 7.07 S.U. 0411619 7.29 6.40 8.82 7.151 7.68 S.U. 1010]19 9.18 7.44 7.97 8.15 8.61 S.U. 04/28/10 6.6 5.67 8.08 8.30 6.78 S.U. 1010110 7.5 6.38 8.94 7.08 7.55 S.U. OS/10/11 7.35 8.37 7.98 8.55 S.U. 1 010 111 7.61 6.14 7.132 8.89 7.69 S.U. 04/16/12 7.83 8.60 7.03 7.41 7.87 S.U. 1012412 7.68 7.69 8.25 7.66 8.59 S.U. 04/24/13 8.29 7.07 8.05 8.00 8.77 S.U. 0910913 8.33 6.76 7.22 7.31 8.12 S.U. 04/22/14 8.4 5.55 8.84 7.03 8.52 S.U. 10/01/14 7.69 8.04 8.70 8.85 7.43 S.U. 0410]115 6.76 5.82 8.15 8.33 8.67 S.U. 1010115 6.47 5.68 5.89 5.97 6.35 S.U. 04/18/16 6.36 5.87 8.19 8.38 8.62 S.U. 09/26/16 6.54 5.84 5.99 8.11 8.57 S.U. 04/25/17 6.46 5.82 8.25 8.32 8.73 S.U. 10/16/17 8.55 5.75 8.28 8.22 8.68 S.U. 041618 8.50 5.70 8.09 8.31 8.88 S.U. 10/18/18 8.39 5.84 8.08 8.21 8.70 S.U. 0410119 6.67 5.]8 8.53 B.Sd 8.]9 S.U. 10/09/19 6.43 5.]5 8.18 8.20 8.67 S.U. 04/20/20 6.49 5.91 8.34 8.51 6.72 S.U. 10/13/20 5.90 5.]3 8.16 6.29 6.71 Spec Conduc nce(Field uS/crn 03/27/00 353 877 1381 1687 1989 uS/cm 09/13/00 335 9-1 1485 660 875 uSlcm 03/12/01 7520 .Sian 09/13/01 88838 73234 68639 71673 65394 uSlcm 03/07/02 876 1692 2260 2127 3" .Sian 09/18/02 858 1619 2300 2913 2319 uSlcm 041 5103 1650 1484 2060 1950 .Sian 10/15/03 480 1650 1890 2640 2720 uSlcm 03/24/04 428 1650 1990 624 2690 .Sian 091 VO4 472 1690 1179 2]20 1094 uSlcm 05/10/05 434 1510 2030 2570 5560 .Sian 10/11/05 576 1930 2430 3020 1700 uSlcm 04/24/06 - 2080 2560 3010 3010 .Sian 10/16/06 2090 2590 3020 2600 uSlcm 041 0107 514 219 252 289 267 .Sian 091 5107 582 2210 2570 3170 2570 uSlcm 051OV08 45.7 289 270 295 267 .Sian 12/0S/08 5390 2490 1410 34]0 2200 uSlcm 04/16/09 539 3" 2290 2]80 2420 .Sian 1010]1 9 552 2580 2720 3410 2160 uSlcm 04/28/10 439 2220 2270 2640 1840 .Sian 1010 110 446 2260 2380 3000 630 uSlcm 05/10/11 3010 1020 2870 1980 .Sian 1010 Ill 447 2620 1290 2980 1270 uSlcm 04/16/12 416 3060 2230 2480 1960 .Sian 10/24/12 399 3270 280 2910 2030 uSlcm 041241 3 410 3210 13306 2]60 1880 .Sian 09/09/13 414 3280 2370 2900 1840 uSlcm 04/22/14 395 3300 2930 2"0 2010 .Sian 10/01/14 425 3400 2580 3320 193 uSlcm 04/07/15 268 2140 1610 1920 1280 .Sian 1010 115 304 2361 2017 2424 1239 uSlcm 04/18/16 323 2515 1803 1798 1338 .Sian 09/26/16 340 2581 2076 2324 1390 uSlcm 04/25/17 362 3197 1039 '54 1286 .Sian 10/16/17 367 3280 7897 2843 7706 uSlcm 041 6118 321 2992 2089 2224 1633 .Sian 10/18/18 317 2662 1985 2146 1363 uSlcm 04/08/19 368 3111 895 1301 1813 us lcm 10/09/19 287 2937 1892 2475 1834 2= (14120/20 424 3461 945 7330 1787 u5/om 10/13120 393 2546 1406 1729 1838 Temperature (Field) °C 5312710, 14.30 13.95 15.40 14.57 11.62 °C 09/13/00 15.70 1].43 18.05 1].22 1].91 °C 03/12/01 15.06 13.65 15.04 14.75 - °C 09/13/01 15.73 18.52 18.86 1].28 19.88 °C 0310]12 14.25 13.33 13.83 14.22 11.08 °C 09/18/02 10.56 12.05 12.80 11.62 12.9] °C 0415103 - 13.83 14.52 15.71 12.16 °C 10/15/03 id.6] 16.45 17.50 16.33 1].1] °C 03/26/04 16.42 13.1] 16.11 13.72 10.83 °C 09/22/04 16.30 15.95 17.1] 15.72 17.61 °C 051f0/OS 19.24 17.81 20.04 18.42 20.55 °C 10/11/05 12.80 18.38 19.14 19.4] 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 0915107 23.41 22.48 24.49 19.3] 21.12 °C 012108 14.55 18.70 21.71 19.93 20.64 °C 12/0S/O8 14.53 11.66 12.02 12.46 11.01 °C 06/16/09 16.53 16.76 16.12 16.]6 13.94 °C 1010]19 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 1010110 18.37 18.19 17.54 1% 17.41 °C 05/10/11 - 19.7] 21.08 19.8] 18.46 °C 1 010 111 18.70 20.90 20.23 18.60 19.28 °C O6/16/12 14.0] 19.88 22.31 20.35 20.01 °C 10/24/12 12.98 12.90 19.12 20.00 19.20 °C 0412413 13.74 16.77 18.17 17.81 11.65 °C 091091,3 23.09 18.62 25.21 19.86 20.92 °C 04/22/14 16.52 19.69 26.28 21.77 f0.19 °C 10/01/14 11.86 1].04 18.64 1].64 16.84 °C 0410]115 13.96 16.12 15.98 15.68 16.22 °C 1010 115 15.81 17.01 16.63 14.50 17.89 °C 04/18/16 16.29 18.46 18.34 13.9] 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 041 6118 14.3 12.7 14.9 4.9 14.5 °C 10/18/18 16.3 15.9 18 IS S3 18.7 °C 0410 119 15.7 13.9 15.5 15A 14.9 °C 10/09/19 17.7 17.0 20.0 ifi.5 19.9 °C 06/20/20 15.2 14.5 14.7 14.9 14.8 °C 10/13/20 17.1 i6 18.1 17.5 18.7 GOLDER 1 or 2 February 2021 19131339.102 TABLE 5 Summary of Groundwater Field Parameters White Street landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Monitoring Reporting Sample U radiant Well Down radian( Wells Constltuent/Pammeter Units Date MW-13 1-1 I-2 1-3 1-4 Turbidily(Field: NTU 05/10/05 1.01 39] 250 36.8 574 NT 101111O5 3 411 126 51 NTU 8 39 3 NTU 10/16/06 1.7 250 0 23.4 4983 NTU 0411017 - - - - - NTU 0915107 - - - - - NTU 0S1 V08 - - - - NTU 12/OS/08 4.42 - - - - NTU 0411619 - - - - - NTU 1010]1 9 NTU 04/28/10 6.98 35.2 33.8 B.Sd 199 NTU 1010110 3.28 4.63 44.1 10.01 196 NTU 05/10/11 NTU 1 010 111 6.75 7.00 48.6 21.5 264 NTU 04/16/2 4.828 1363 4.44 30.1 118 152 NT 2 4 152 60 NTU 04/24/ 61.5 33 248 NTU 09/09/13 . 416 5.6 16.03 . 880 63.9 NTU 04/2214 4.72 19.6 42.1 5.37 48 NTU 10/01/14 5.76 51 26 61 2 11.97 NTU 0410]115 3.34 24. 106 6.52 34 NTU 1010115 1.62 54.93 296 27. NTU 04/18/16 2.01 12.61 2.09 40 1.05 51 NTU 09/26/16 21.3 2.59 38.5 1.20 14 NTU 04/258/I17 10.3 21.4 40..9 1.89 48...9 NTU 10/16/7 38 0 87 22.9 3.78 7.0 NTU 04168 102 637 88 NTU 101118 3.07 213 1 366 157 NTU 04/0819 3.46 78 49550 6.47 17.0 NT 10/09/19 1.35 07 .]0NTU 1 1.84 98 36 279 311.88 NTU 1 10/13/20 0.98 9.89 14.9 1.90 23.8 Oxidation Reducdor mV 051 0105 -65 -250 -322 -313 -278 Potential (Field mV 10/11/05 197 -78 -26 -54 -7 mV 04/24/06 - 58 -129 -89 -107 mV 10/16/06 - -65 -159 -138 -207 mV 04/10/07 - - - - - mV 0915107 - - - - - mV 0S1 V08 - - - - mV 12/0S/08 105 - - - - mV 0411619 - - - - - mV 1010]1 9 mV 04/28/10 288 281 84 108V 51 m 1010110 244 287 105 123 82 mV 05/10/11 mV 1 010 111 166 185 4 8] -63 mV 04/16/12 171 134 33 62 -65 mV 101241 2 127 73 -37 63 -109 mV 04/24/13 178 89 -70 49 -102 mV 09/09/13 116 106 25 63 -90 mV 04/22/14 118 164 92 125 -78 mV 10/01/14 109 45 -70 45 -133 mV 0410]115 50 38 0 16 -73 mV 1010115 -38.4 123 -12 54 106 mV 04/18/16 135 63 6 32 -107 mV 09/26/16 42.2 22 -32 20 -59 mV 04/25/17 154.9 32.9 -16.0 41.8 -68.0 mV 10/16/17 154.1 81.7 d2.2 54.2 -88.4 mV 0416/18 364.8 214.4 47.6 201.6 -108.9 mV 10/18/18 158.7 4.1 -29.7 150.3 -56.2 mV 0410119 41.2 96.8 43.8 68.2 -102.4 mV 10/09/19 196.3 46.2 10.4 32.0 -118.9 mV 04/20/20 91.3 10.8 -10.1 83.7 -134.3 mV 10/13/20 39.] 37.4 -28.8 69.2 -110.9 Dissolved Oxygen (Field mg/L 051 0105 3.61 0.41 0.23 0.38 0.60 mg/L 10/11/05 5.69 2.21 0.65 0.62 0.42 mg/L 04/24/06 - 0.60 0.23 0.60 0.18 mg/L 10/16/06 - 1.10 0.40 0.61 0.14 mg/L 04/10/07 - - - - - mg/L 0915107 - - - - - mg/L 0S1 V08 - - - - mg/L 12/0S/08 5.01 - - - - MIL 0411619 - - - - - mg/L 04/28/10 6.94 4.89 4.32 1.27 0.08 mg/L 1010110 3.69 1.91 2.27 0.55 0.05 mg8. 05/10/11 mg8. 1 010 111 4.49 1.19 3.38 0.85 0.22 mg/L 04/16/12 4.]5 0.97 2.51 1.59 0.61 mg/L 10/26/12 3.]5 1.45 0.]7 0.90 0.21 mg/L 04/26/13 4.38 1.31 1.]5 0.90 0.38 mg/L 09/09/13 5.95 3.68 4.18 2:1 0.41 mg/L 04/22/14 8.69 1.41 3.71 2.94 1.65 mg/L 10/01/14 4.59 1.87 3.42 0.42 1117 mg/L 0410]115 5.52 4.83 2.78 3.97 0.91 mglL 10/06/75 3.60 0.99 1.19 0.89 0.37 mg/L 04/18/16 6.18 1.11 0.98 0.59 0.19 mg/L 09/26/16 4.61 0.50 0.81 0.64 0.14 mg/L 04/25/17 3.65 0.60 2.69 0.60 0.20 mg/L 10/16/17 2.65 0.68 0.51 0.22 0.05 mg/L 0416/18 3.38 0.67 0.63 0.59 0.18 mglL 10/18/18 3.55 0.92 1.91 0.39 0.]0 mg/L 0410119 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 0412010 2.89 0.65 1.88 0.38 0.12 8. m 10/13/20 2.33 0.66 0.75 0.42 0.32 Notee: S.U.=Stand,M Units NTU = Nephelometric Turbidity Unit: u5/cm = mi... mrn- per endmete mg/L = milligrams per lice e mV = Millivolt; --= no data avaiiabi� Data prior to April 2017 provided by SBME Engineering GOLDER 2df2 February 2021 19131339.102 TABLES 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 Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date Detection Guanitation Blanks SW-1 SW-2 SW-3 SW-4 SW-5 Limit Limh Antimony ug/L 03/01/00 - -- ND ND ND ND ND ND No SW Standard ug/L 09/01/00 - -- ND ND ND ND ND ND ug/L 03/01/01 - -- ND ND ND ND ND ND ug/L 09/01/01 - -- ND ND ND ND ND ND ug/L 03/01/02 - -- ND ND ND ND ND ND ug/L 09/01/02 - -- ND ND ND ND ND ND ug/L 04/01/03 - -- ND ND ND ND ND ND ug/L 10/01/03 - -- ND ND ND ND ND ND ug/L 03/01/04 - -- ND ND ND ND ND ND ug/L 09/01/04 - -- ND ND ND ND ND ND ug/L 05/01/05 - -- ND ND ND ND ND ND ug/L 10/01/05 - -- ND ND ND ND ND ND ug/L 04/01/06 - -- ND ND ND ND ND ND ug/L 10/01/06 - -- 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 - - ND ND ND ND ND ug/L 12/04/08 0.68 - - ND ND ND ND ND ug/L 04/13/09 0.68 - - ND ND ND ND ND ug/L 10/20/09 0.073 - 0.461 B 0.185 B 0.351 B 0.346 B 0.337 B -- ug/L 04/30/10 0.22 -- -- ND 0.272 1 0.225 1 0.258 1 ND ug/L 10/11/10 0.22 -- -- 0.329 1 0.254 1 0.233 1 0.221 1 ND ug/L 05/12/11 0.22 -- 0.448 1 ND 0.287 1 0.241 1 0.261 1 ND ug/L 10/07/11 1.1 -- ND ND ND 0.287 1 0.24 1 ND ug/L 04/19/12 0.22 -- 0.279 1 ND 0.34 1 0.308 1 0.284 1 ND ug/L 10/26/12 0.22 - ND ND ND ND ND ND ug/L 04/25/13 0.22 - ND ND ND ND ND ND ug/L 09/12/13 0.22 - ND 0.344 1 0.28 1 ND ND ND ug/L 04/25/14 0.22 - 0.695 1 1.62 1 0.582 1 0.332 3 0.264 1 ND ug/L 10/02/14 0.22 - 0.526 1 ND 0.378 1 0.268 3 0.267 1 ND ug/L 04/06/15 0.22 - 0.312 1 ND 0.232 1 ND 0.754 1 ND ug/L 10/07/15 0.22 - 0.268 1 ND 0.372 1 0.259 1 ND ND ug/L 04/20/16 0.22 -- 0.22 ND ND 0.424 1 0.261 1 ND ug/L 09/26/16 0.22 -- ND ND ND ND 0.479 1 ND ug/L 04/28/17 0.37 -- 0.708 1 ND 0.485 1 ND ND ND ug/L 10/17/17 0.37 -- 0.455 1 ND 0.490 1 ND 0.654 1 ND ug/L 04/16/18 1.85 -- 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 Arsenic ug/L 03/01/00 - -- ND ND ND ND ND ND SW Standard ug/L 09/01/00 - -- ND ND ND ND ND ND Human Health = 10 ug/L ug/L 03/01/01 - -- ND ND ND ND ND ND ug/L 09/01/01 - -- ND ND ND ND ND ND ug/L 03/01/02 - -- ND ND ND ND ND ND ug/L 09/01/02 - -- ND ND ND ND ND ND ug/L 04/01/03 - - ND ND ND ND ND ND ug/L 10/01/03 - - ND ND ND ND ND ND ug/L 03/01/04 - - ND ND ND ND ND ND ug/L 09/01/04 - - ND ND ND ND ND ND ug/L 05/01/05 - -- ND ND ND ND ND ND ug/L 10/01/05 - -- ND ND ND ND ND ND ug/L 04/01/06 - -- ND ND ND ND ND ND ug/L 10/01/06 - -- 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 -- - ND 2.4 1 ND 2.2 1 ND ug/L 12/04/08 2.8 - - ND ND ND ND ND ug/L 04/13/09 2.8 - - ND ND ND ND ND ug/L 10/20/09 2.8 - ND ND ND ND ND ND ug/L 04/30/10 2.8 - - ND ND ND ND ND ug/L 10/11/10 2.8 - - ND ND ND ND ND ug/L 05/12/11 2.8 - 3.04 1 3.39 1 ND ND ND ug/L 10/07/11 2.8 - ND ND ND ND ND ND ug/L 04/19/12 2.8 - ND ND 3.12 1 ND ND ND ug/L 10/26/12 2.8 - ND ND ND ND 5.25 1 ND ug/L 04/25/13 2.8 -- ND ND ND ND ND ND ug/L 09/12/13 5.4 -- ND ND ND ND ND ND ug/L 04/25/14 5.4 -- ND ND ND ND ND ND ug/L 10/02/14 5.4 -- 6.11 1 ND ND ND ND ND ug/L 04/06/15 6.8 -- ND ND ND ND ND ND ug/L 10/07/15 6.8 -- ND ND ND ND ND ND ug/L 04/20/16 6.8 -- ND ND ND ND ND ND ug/L 09/26/16 6.8 -- ND ND ND ND ND ND ug/L 04/28/17 6.8 -- ND ND ND ND ND ND ug/L 10/17/17 6.8 -- ND ND ND ND ND ND ug/L 04/16/18 6.8 -- ND ND ND 9.17 1 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 Badum ug/L 03/01/00 - -- ND ND ND ND ND ND SW Standard ug/L 09/01/00 - -- ND ND ND ND ND ND Human Health = 200 mg/L ug/L 03/01/01 - -- ND ND ND ND ND ND ug/L 09/01/01 - -- ND ND ND ND ND ND ug/L 03/01/02 - -- ND ND ND ND ND ND ug/L 09/01/02 - -- ND ND ND ND ND ND ug/L 04/01/03 - -- ND ND ND ND ND ND ug/L 10/01/03 - -- ND ND ND ND ND ND ug/L 03/01/04 - -- ND ND ND ND ND ND ug/L 09/01/04 - -- ND ND ND ND ND ND ug/L 05/01/05 - -- ND ND ND ND ND ND ug/L 10/01/05 - -- ND ND ND ND ND ND ug/L 04/01/06 - -- ND ND ND ND ND ND ug/L 10/01/06 - -- ND ND ND ND ND ND ug/L 04/10/07 - - 41.8 1 54.8 1 21.7 1 25.4 1 25.6 1 ND ug/L 09/25/07 - -- 74.5 1 70.9 1 16.8 1 23 1 24 1 ND ug/L 05/05/08 0.2 -- - 51.2 B 53 B 92.5 B 65.5 B ND ug/L 12/04/08 1 - - 35.9 1 21.8 1 27 1 27 1 ND ug/L 04/13/09 4.2 - - 53.4 1 44.8 1 41.6 1 42 1 ND ug/L 10/20/09 1 - 68.3 1 36.3 1 21.8 1 27.2 1 26.9 1 ND ug/L 04/30/10 1 -- - 48.5 1 30.9 J 37.1 1 44.2 J ND ug/L 10/11/10 1 -- - 47.1 1 18.8 J 29.3 1 30.6 J ND ug/L 05/12/11 1 -- 77.3 1 39.3 1 40.3 1 35.3 1 37 J ND ug/L 10/07/11 1 -- 74.2 1 76.4 1 21.4 1 42.7 1 32.2 J ND ug/L 04/19/12 1 -- 43.7 1 48.4 1 23.5 J 33.7 1 33.7 J ND ug/L 10/26/12 1 -- 48.2 1 51.2 1 25.2 J 34.8 1 35.1 J ND ug/L 04/25/13 1 -- 57 1 65.1 1 28.5 1 40.8 1 37.8 1 ND ug/L 09/12/13 1 -- 56.7 1 40.7 1 25.3 1 31.5 1 33.9 1 ND ug/L 04/25/14 1 -- 100 60.8 1 49.3 1 52.7 1 48.8 1 ND ug/L 10/02/14 1 -- 112 45.9 1 22.3 1 24.4 1 25.1 1 ND ug/L 04/06/15 1 -- 59.3 1 44.3 1 42.2 1 35.5 1 47.3 J ND ug/L 10/07/15 1 -- 85.7 1 46.2 1 28.3 1 319 41 J ND ug/L 04/20/16 1 -- 113 46.3 J 47.5 1 31 1 35.4 J ND ug/L 09/26/16 1 -- 44.8 1 52.8 J 17.6 J 27.9 1 33.9 J ND ug/L 04/28/17 1 -- 46.5 1 45.4 1 59.9 J 50.2 1 45.0 J ND ug/L 10/17/17 1 -- 40.1 1 33.6 1 55.8 J 41.2 1 37.8 1 ND ug/L 04/16/18 1 -- 42.9 1 45.4 1 42.1 J 43.9 1 44.1 1 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 u /L 10/15/20 1.1 10 47.9 48.5 47.3 52.0 52.9 ND Beryllium ug/L 03/01/00 - -- ND ND ND ND ND ND SW Standard ug/L 09/01/00 - -- ND ND ND ND ND ND Acute =65 ug/L ug/L 03/01/01 - -- ND ND ND ND ND ND Chronic=6.5 ug/L ug/L 09/01/01 - -- ND ND ND ND ND ND ug/L 03/01/02 - -- ND ND ND ND ND ND ug/L 09/01/02 - -- ND ND ND ND ND ND ug/L 04/01/03 - -- 2.4 2.4 2.3 2.3 ND ND ug/L 10/01/03 - -- ND ND ND ND ND ND ug/L 03/01/04 - -- ND ND ND ND ND ND ug/L 09/01/04 - -- ND ND ND ND ND ND ug/L 05/01/05 - -- ND ND ND ND ND ND ug/L 10/01/05 - -- ND ND ND ND ND ND ug/L 04/01/06 - - ND ND ND ND ND ND ug/L 10/01/06 - -- 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 -- - ND ND ND ND ND ug/L 12/04/08 0.1 -- - ND ND ND ND ND ug/L 04/13/09 0.08 -- - ND ND ND ND ND ug/L 10/20/09 0.1 -- 0.113 1 ND ND ND ND 0.42 1 ug/L 04/30/10 0.1 -- - ND ND ND ND ND ug/L 10/11/10 0.1 -- - ND ND ND ND ND ug/L 05/12/11 0.1 -- ND ND ND ND ND ND ug/L 10/07/11 0.1 -- ND 0.149 1 ND ND ND ND ug/L 04/19/12 0.1 - ND ND ND ND ND ND ug/L 10/26/12 0.1 - ND ND ND ND ND ND ug/L 04/25/13 0.1 - ND ND ND ND ND ND ug/L 09/12/13 0.1 - ND ND ND ND ND ND ug/L 04/25/14 0.1 - ND ND ND ND ND ND ug/L 10/02/14 0.1 -- ND ND ND ND ND ND ug/L 04/06/15 0.1 -- ND ND ND ND ND ND ug/L 10/07/15 0.1 -- ND ND ND ND ND ND ug/L 04/20/16 0.1 -- ND ND ND ND ND ND ug/L 09/26/16 0.1 -- ND ND ND ND ND ND ug/L 04/28/17 0.13 -- ND ND ND ND ND ND ug/L 10/17/17 0.13 -- ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 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 GOLDER 1 of 6 February 2021 19131339.102 TABLES 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 Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date Detection Quanitation Blanks SW-1 SW-2 SW-3 SW-4 SW-5 Limit Limit Cadmium ug/L 03/01/00 - -- ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 - -- ND ND ND ND ND ND SW-1 =0.82 ug/L 03/01/01 - -- ND ND ND ND ND ND SW-2=0.82 ug/L 09/01/01 - -- 1.1 ND ND ND ND ND SW-3=0.82 ug/L 03/01/02 - -- ND ND ND ND ND ND SWA =0.82 ug/L 09/01/02 - -- ND 1.2 ND ND ND ND SW-5=0.82 ug/L 04/01/03 - -- 4.1 3.8 4.0 3.9 ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 - -- ND ND ND ND ND ND SW-1 =0.15 ug/L 03/01/04 - -- 1.0 ND 1.0 ND ND ND SW-2=0.15 ug/L 09/01/04 - -- ND ND ND ND ND ND SW-3=0.15 ug/L 05/01/05 - -- ND ND ND ND ND ND SWA 0.15 ug/L 10/01/05 - - ND ND ND ND ND ND SW-5=0.15 ug/L 04/01/06 - - ND ND ND ND ND ND ug/L 10/01/06 - - 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 - -- ND ND ND ND ND ug/L 12/04/08 0.36 - - ND ND ND ND ND ug/L 04/13/09 0.09 - -- 0.14 J 0.17 J 0.26 J 0.21 J ND ug/L 10/20/09 0.36 - 0.477 J ND ND ND ND ND ug/L 04/30/10 0.36 - -- ND ND ND ND ND ug/L 10/11/10 0.36 - -- ND ND ND ND ND ug/L 05/12/11 0.36 - 0.471 J ND ND ND ND ND ug/L 10/07/11 0.36 - ND ND ND ND ND ND ug/L 04/19/12 0.36 -- ND ND ND ND ND ND ug/L 10/26/12 0.36 -- ND ND ND ND ND ND ug/L 04/25/13 0.36 -- ND ND ND ND ND ND ug/L 09/12/13 0.36 - ND ND ND ND ND ND ug/L 04/25/14 0.36 - ND ND ND ND ND ND ug/L 10/02/14 0.36 - 0.661 J ND ND ND ND ND ug/L 04/06/15 0.36 - ND ND ND ND ND ND ug/L 10/07/15 0.36 - 0.784 J ND ND 5.66 ND ND ug/L 04/20/16 0.36 - ND ND ND ND ND ND ug/L 09/26/16 0.36 - ND ND ND ND ND ND ug/L 04/28/17 0.36 - ND ND ND ND ND ND ug/L 10/17/17 0.36 - ND ND ND ND ND ND ug/L 04/16/18 0.36 - 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 u L 10/15/20 0.36 1.0 ND ND ND ND ND ND Chromium ug/L 03/01/00 -- - ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- ND ND 25 14 20 ND SW Standard, Acute (ug/L) ug/L 03/01/01 -- -- ND ND ND ND ND ND SWA =180 ug/L 09/01/01 -- -- ND ND ND ND ND ND SW-2=180 ug/L 03/01/02 -- -- ND ND ND ND ND ND SW-3=180 ug/L 09/01/02 - - ND ND ND ND ND ND SWA =180 ug/L 04/01/03 - - ND ND ND ND ND ND SW-5=160 ug/L 10/01/03 - - ND ND 10 ND ND ND SW Standard, Chronic (ug/L) ug/L 03/01/04 - - ND ND ND ND ND ND SW-1=24 ug/L 09/01/04 - - ND ND ND ND ND ND SW-2=24 ug/L 05/01/05 - - ND ND ND ND ND ND SW-3=24 ug/L 10/01/05 - -- ND ND ND ND ND ND SWA 24 ug/L 04/01/06 - -- ND ND ND ND ND ND SW-5=24 ug/L 10/01/06 - -- 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 -- - ND ND 15.0 ND ND ug/L 12/04/08 1 -- - ND 2.3 J ND 1.40 J ND ug/L 04/13/09 0.7 -- - 1.40 J 1.60 J 1.10 J 1.10 J ND ug/L 10/20/09 1 -- 8.16 J ND ND ND ND ND ug/L 04/30/10 1 -- - ND 1.14 J ND 1.95 J ND ug/L 10/11/10 1 -- - 2.52 J 1.00 1.00 1.00 ND ug/L 05/12/11 1 -- 4.37 J ND 1.09 J ND ND ND ug/L 10/07/11 1 -- 6.97 J 6.25 J 1.21 J 3.00 J ND ND ug/L 04/19/12 1 -- 1.11 J ND ND ND ND ND ug/L 10/26/12 1 -- ND ND ND ND ND ND ug/L 04/25/13 1.4 -- 1.44 J 2.12 J ND ND 2.57 J ND ug/L 09/12/13 1.4 -- ND ND ND ND ND ND ug/L 04/25/14 1.4 -- 11.7 ND 4.26 J 1.7 J ND ND ug/L 10/02/14 1.4 -- 20.6 B 2.13 B 13.4 B 2.50 B 2.70 B - ug/L 04/06/15 1.4 -- 3.66 J ND 3.36 J ND 3.51 J ND ug/L 10/07/15 1.4 -- 7.93 J ND ND 66.1 ND ND ug/L 04/20/16 1.4 -- 14.6 ND 6.73 J ND ND ND ug/L 09/26/16 1.4 -- ND ND ND ND ND ND ug/L 04/28/17 1.4 -- ND ND 5.88 J 1.43 J ND ND ug/L 10/17/17 1.4 -- ND ND 3.94 J ND ND ND ug/L 04/16/18 1.4 -- 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 yq /L 10/15/20 1.4 10 3.09 J 1.64 J 2.85 J 2.29 J 2.22 J ND Cobalt ug/L 03/01/00 - -- ND ND ND ND ND ND No SW Standard ug/L 09/0,/00 - -- ND ND ND ND ND ND ug/L 03/01/01 - -- ND ND ND ND ND ND ug/L 09/01/01 - -- ND ND ND ND ND ND 03/01/02 - -- ND ND ND ND ND ND %ug/L L 09/01/02 - -- ND 17 ND ND ND ND ug/L 04/01/03 - -- 14 14 15 14 ND ND ug/L 10/01/03 - -- ND ND ND ND ND ND 03/01/04 - -- ND ND ND ND ND ND %ug/L !- 09/0,/04 - -- ND ND ND ND ND ND ug/L 05/0,/05 - -- ND ND ND ND ND ND ug/L 10/01/05 - -- ND ND ND ND ND ND ug/L 04/01/0 - -- ND ND ND ND ND ND ug/L 10/01/06 - -- 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 -- - ND ND 7.1 J 3.8 J ND ug/L 12/04/08 1.1 -- - ND ND ND 2.9 J ND ug/L 04/13/09 0..6 1.8 J 0.7 J 0.8 J 0.6 J ND ug/L 10/209 11 3.43 J ND ND ND ND ND/0 04/301 . ND ND NDug/L ug/L 10/11/1 1.1 - ND ND ND ND ND ug/L 05/12/11 1.1 3.1 ND ND ND ND ND ug/L 10/07/11 1.1 -- 4.06 J 6.5 J 1.19 J 2.28 J ND ND ug/L 04/19/12 11 ND ND ND ND ND ND ug/L 10/26/12 1.1 -- ND ND ND ND ND ND ug/L 04/25/13 1.1 -- ND 2.03 J ND ND ND ND ug/L 09/12/13 1.1 -- ND ND 1.46 J 1.15 J ND ND ug/L 04/25/14 1.1 -- 4.31 J ND 1.91 J ND ND ND ug/L 10.2/14 1.1 -- 8.95 J ND 4.56 J 2.46 J 2.45 J ND ug/L 04/06/15 1.1 -- 1.73 J ND 2.44 J 1.56 J 2.18 J ND ug/L 10/07/15 1.1 -- 4.34 J ND 2.43 J 46.5 1.92 J ND ug/L ..0/,6 1.1 -- 7.38 J ND 4.32 J 1.66 J 2.1 J ND ug/L 09/26/16 1.1 -- ND 1.30 J ND ND ND ND ug/L 04/28/17 1.1 -- ND ND 2.31 J ND ND ND ug/L 10/17/17 1.1 -- ND ND 2.94 J ND ND ND ug/L 04/18/18 1.1 -- 1.85 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 04/1211. 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 Copper ug/L 03/01/00 - -- ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 - -- ND ND ND ND ND ND SW-1=3.6 ug/L 03/01/01 - -- ND ND ND ND ND ND .2-3.6 ug/L 09/0,/01 - -- ND ND ND ND ND ND SW-3-3.6 ug/L 03/01/02 - -- ND ND ND ND ND ND SW4-3.6 ug/L 09/01/02 - -- ND ND ND ND ND ND SW-5=3.6 ug/L 04/01/03 - -- ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 - -- ND ND ND ND ND ND SW-1=2.7 %1- 03/01/04 - -- ND ND ND ND ND ND SW-2=2.7 ug/L 09/01/04 - -- ND ND ND ND ND ND SW-3-2.7 ug/L 05/01/05 - -- ND ND ND ND ND ND SW-4-27 ug/L 10/01/05 - -- ND ND ND ND ND ND SW-5=2.7 ug/L 04/01/06 - -- ND ND ND ND ND ND 10/01/06 - -- ND ND ND ND ND ND %ug/L 1- 04/10/07 - -- 2.20 J 1.50 J 6.20 J 4.50 J 4.30 J ND 09/25/07 - -- 11.2 0.6 10.3 8.40 J 10.1 ND %ug/L 1- 05/05/08 0.6 -- -- 1.3 J 2.50 J 13.3 3.7 J ND ug/L 12/04/08 1.6 -- -- 20.5 J 4...6..0 4.3 J 6..40 J N- D ug/L 04/13/09 0.81 -- 1.93 2.56 J 1.87 J 1.78 J ND ug/L 10/20/09 1 10. ND 71 J 5.1 J 526 J ND ug/L 04/30/10 1.6 -- ND 590 J 3.35 J 6.33 J ND ug/L 10/11/1 16 10.2 J .34 5.59 J 391 J ND 05/12/ 1.6 ND 3J 28ug/L J 3.03 J ND 10/07/1 31 8.72 J 5.88 .91 J 6 J 3 .28 Jug/L ND 0419/12 1.6 J ND 4. 36 J 411 J NDug/L ug/L 10/26/12 16 204 J ND 547 J 222 J 2.71 J ND ug/L 04/25/13 16 3.43 J 5.01 J 4.46 J 433 J 6.16 J ND ug/L 09/12/13 1 194 J ND 1.67 J ND ND ND ug/L 0425/14 1.6 167 B 34 B 1B 59 B 629 B ug/L 10/02/14 16 30.9 1.82 J 60852 J . 5. . J ND ug/L 04/0615 16 4.30 1 3.7 1 2 J .30 824 J ND ug/L 10/0715 1.6 11.3 1.6 265 J 57.1 2.17 ND ug/L 04,6 6 21.2 ND 10.8 2.56 J 4.07 J ND ug/L 09/20616 42 J 257 J 6.61 J 6.0 J 8.507 J ND 8 51 J 02 J 1047 3.4 45 J 41 J NDug/L ug/L 10/17 1.6 5 J 1.77 J 9.07 J 2.5 J 2.89 J ND 0416 19 J 4.1 J 1 53 J 38 J .9ug/L ND ug/L 10/18 1 1 3.11 J 3.84 J 2.7J 2.42 J 3.55 J ND ug/L 2/9 0411 1. 6 0 3.44 J 5.44 J 5.11 J 3.66 J 4.18 J ND ug/L 10/08/19 1.6 10 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 u L 10/15/20 1.6 10 4.38 J 4.03 J 4.33 J 4.59 J 4.21 J ND GOLDER 2 of February 2021 19131339.102 TABLES 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 Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date Detection Quanitation Blanks SW-1 SW-2 SW-3 SW-4 SW-5 Limit Limit Lead ug/L 03/01/00 - -- ND ND 15 ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 - -- ND ND 10 ND ND ND SW-1=14 ug/L 03/01/01 - -- ND ND ND ND ND ND SW-2=14 ug/L 09/01/01 - -- 25 ND ND ND ND ND SW-3=14 ug/L 03/01/02 - -- ND ND ND ND ND ND SW-4=14 ug/L 09/01/02 - -- ND 86 ND ND ND ND SW-5=14 ug/L 04/01/03 - - ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 - - ND ND ND ND ND ND SW-1 =0.54 ug/L 03/01/04 - - ND ND ND ND ND ND SW-2=0.54 ug/L 09/01/04 - - ND ND ND ND ND ND SW-3=0.54 ug/L 05/01/05 - - ND ND ND ND ND ND SW-4=0.54 ug/L 10/01/05 - - ND ND ND ND ND ND SW-5=0.54 ug/L 04/01/06 - - ND ND ND ND ND ND ug/L 10/01/06 - - 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 - -- ND ND 14.8 ND ND ug/L 12/04/08 1.9 - - ND ND ND ND ND ug/L 04/13/09 1.6 -- -- 2.30 J 2.50 J 1.60 1.60 ND ug/L 10/20/09 1.9 -- 8.94 J ND ND 2.44 J 3.34 J ND ug/L 04/30/10 1.9 -- -- ND ND ND 2.04 J ND ug/L 10/11/10 1.9 -- -- 5.45 J 1.90 1.90 1.90 ND ug/L 05/12/11 1.9 -- 15.4 ND 2.00 J ND ND ND ug/L 10/07/11 1.9 -- 10.0 16.4 ND 3.33 J ND ND ug/L 04/19/12 1.9 -- ND ND 2.38 J ND ND ND ug/L 10/26/12 1.9 -- ND ND ND ND ND ND ug/L 04/25/13 1.9 -- ND 4.74 J ND ND ND ND ug/L 09/12/13 2.1 -- ND ND ND ND ND ND ug/L 04/25/14 2.1 -- 11.2 3.23 J 3.36 J 2.23 J 2.82 J ND ug/L 10/02/14 2.1 -- ND ND ND ND ND ND ug/L 04/06/15 3.1 -- ND ND ND ND ND ND ug/L 10/07/15 3.1 -- 7.02 J ND ND IL 93.2 ND ND ug/L 04/20/16 3.1 -- 14.6 ND 6.10 J ND ND ND ug/L 09/26/16 3.1 -- ND ND ND ND ND ND ug/L 04/28/17 3.1 -- ND ND 4.66 J ND ND ND ug/L 10/17/17 3.1 -- ND ND 3.18 J ND ND ND ug/L 04/16/18 3.1 -- 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 NO Nickel ug/L 03/01/00 - -- ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 - -- ND ND 82 65 81 ND SWA-140 ug/L 03/01/01 - -- ND ND ND ND ND ND SW-2=140 ug/L 09/01/01 - -- ND ND ND ND ND ND SW-3=140 ug/L 03/01/02 - -- ND ND ND ND ND ND SW-4=140 ug/L 09/01/02 - -- ND ND ND ND ND ND SW-5=140 %1- 04/0,/03 - -- ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 - -- ND ND ND ND ND ND SW-1=16 ug/L 03/01/04 - -- ND ND ND ND ND ND SW-2=16 %1- 09/01/04 - -- ND ND ND ND ND ND SW-3=16 ug/L 05/01/05 - -- ND ND ND ND ND ND SW-4=16 ug/L 10/01/05 - -- ND ND ND ND ND ND SW-5=16 ug/L 04/01/06 - -- ND ND ND ND ND ND ug/L 10/01/06 - -- 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 gL 05/05/08 2.0 3.5 J 39 J 55 J 67 J ND L 12/04/08 1 ND 4.3 J 3.8 J 3.2 J ND ug/L 04/1309 0. -- 2.3 J 1.5 J 1.6 J 1.5 J ND ugL 10/20/0 2.94 J ND 2.593 J 1.89 J ND ND 04/30/10 1 ND ND ND 21 NDug/L ug/L 10/11/10 -- 1.80 2.22 J 1.80 1.80 ND ug/L 0.1211 . 6J ND ug/L 10/0711 364 J 4.23 J 64J 4.3 J 3.43 J ND 04112ug/L 1 ND ND 2.5J 2.01 0 J 2.23 J ND6 ug/L 10/26/12 ND 1.9 J 5.32 4 J 54J ND 04/25/13 3 696 J 6.86 Jug/L ND ug/L 09/12/13 ND ND 2.0J ND ND ND 04/25/14 55 J ND ug/L 10/02/14 . 725 J ND 23.7 J 9.96 J 10.6 J ND 04/O611 ND 03 J 23 3 J 246 Jug/L ND ug/L 10/0715 8 122 316 . J ND 65J 22.0 J 3.14 J ND ug/L 04/2i6 5.60 J ND 5.02 J 854 J 2.8J ND ug/L 09/20616 22 ND ND 3.54 J 3.34 J 6484 J ND ug/L 04/28/17 22 ND ND . 602 J 2.83 J 2.62 J ND ug/L 10/17/17 2.2 -- ND ND ND ND ND ND ug/L 04/16/18 2.2 -- 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 Selenium ug/L 03/01/00 - -- ND ND ND ND ND ND SW Standards ug/L 09/01/00 - -- ND ND ND ND ND ND Acute =5 ug/L ug/L 03/01/01 - -- ND ND ND ND ND ND Chronic=5 ug/L ug/L 09/01/01 - -- ND ND ND ND ND ND ug/L 03/0,/02 - -- ND ND ND ND ND ND ug/L 09/01/02 - -- ND ND ND ND ND ND ug/L 04/0,/03 - - ND ND ND ND ND ND ug/L 10/01/03 - - ND ND ND ND ND ND ug/L 03/01/04 - - ND ND ND ND ND ND ug/L 09/01/04 - - ND ND ND ND ND ND ug/L 05/01/05 - - ND ND ND ND ND ND ug/L 10/01/05 - - ND ND ND ND ND ND ug/L 04/01/0 - - ND ND ND ND ND ND ug/L 10/01/06 - - 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 -- - ND ND ND ND ND ug/L 12/04/08 2.7 -- - ND ND ND ND ND ug/L 04/13/09 3.4 -- - ND ND ND ND ND ug/L 10/20/09 2.7 -- ND ND ND ND ND ND ug/L 04/30/10 0.83 -- - 1.72 J 0.9 J 0.974 J 1.23 J ND ug/L 10/11/10 0.83 -- -- 0.83 0.83 0.83 0.875 J ND ug/L 05/12/11 0.83 - ND ND ND 1.16 J 0.926 J ND ug/L 10/07/11 4.15 - ND ND ND 1.03 J 1.16 J ND ug/L 04/19/12 0.83 - ND ND ND ND ND ND ug/L 10/26/12 0.83 - ND ND ND ND ND ND ug/L 04/25/13 0.83 - ND ND ND ND ND ND ug/L 09/12/13 0.91 - ND ND ND ND ND ND ug/L 04/25/14 0.91 -- ND ND ND ND ND ND ug/L 10/02/14 0.91 -- ND ND ND ND ND ND ug/L 04/06/15 0.91 -- ND ND ND ND ND ND ug/L 10/07/15 0.91 -- ND ND ND ND ND ND ug/L 04/20/16 0.91 -- ND ND ND ND ND ND ug/L 09/26/16 0.91 - ND ND ND ND ND ND ug/L 04/28/17 6.2 -- ND ND ND ND ND ND ug/L 10/17/17 6.2 -- ND ND ND ND ND ND ug/L 0.16/18 6.2 -- 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 10/15/20 6.2 10 ND ND ND ND ND ND ISilver L 03/01/00 - -- ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 - -- ND ND ND ND ND ND SW-1=30 ug/L 03/01/01 - -- ND ND ND ND ND ND SW-2=30 ug/L 09/01/01 - -- ND ND ND ND ND ND SW-3=30 ug/L 03/01/02 - -- ND ND ND ND ND ND SW-4=30 ug/L 09/01/02 - - ND ND ND ND ND ND SW-5=30 ug/L 04/01/03 - - ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 - - ND ND ND ND ND ND SW-1 =0.06 %L 03/01/04 - - ND ND ND ND ND ND SW-2=0.06 ug/L 09/01/04 - - ND ND ND ND ND ND SW-3=0.06 ug/L 05/01/05 - - ND ND ND ND ND ND SW-4-0.06 ug/L 10/01/05 - - ND ND ND ND ND ND SW-5=0.06 ug/L 04/01/O6 - - ND ND ND ND ND ND ug/L 10/01/06 - - 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 - -- ND 2.20 J ND 2.40 J ND ug/L 12/04/08 1.9 -- - ND ND ND 2.80 J ND ug/L 04/13/09 1.0 -- - ND ND ND ND ND ug/L 10/20/09 1.9 -- ND ND ND ND ND ND ug/L 04/30/10 1.9 -- - 2.22 J ND ND ND ND ug/L 10/11/10 1.9 -- - ND ND ND ND ND ug/L 05/12/11 1.9 -- ND ND ND ND ND ND ug/L 10/07/11 1.9 -- ND ND ND ND ND ND ug/L 04/19/12 1.9 -- ND ND ND ND ND ND ug/L 10/26/12 1.9 -- ND ND ND ND ND ND ug/L 04/25/13 1.9 -- 2.06 J ND 1.95 J 2.29 J 2.31 J ND ug/L 09/12/13 1.9 -- ND ND ND ND ND ND ug/L 04/25/14 1.9 -- ND ND ND ND ND ND ug/L 10/02/14 1.9 -- ND ND ND ND ND ND ug/L 04/06/15 1.9 -- ND ND ND ND ND ND ug/L 10/07/15 1.9 -- ND ND 2.74 J ND 2.32 J ND ug/L 04/20/16 1.9 -- ND ND ND ND ND ND ug/L 09/26/16 1.9 -- ND ND ND ND ND ND ug/L 04,28/17 1.9 -- ND ND ND ND ND ND ug/L loll 7/17 1.9 -- ND ND ND ND ND ND ug/L 04/16/18 1.9 -- 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 GOLDER 3 of February 2021 19131339.102 TABLES 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 Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date Detection Quanitation Blanks SW-1 SW-2 SW-3 SW-4 SW-5 Limit Limit Thallium ug/L 03/01/00 - -- ND ND ND ND ND ND No SW Standard ug/L 09/01/00 - -- ND ND ND ND ND ND ug/L 03/01/01 - -- ND ND ND ND ND ND ug/L 09/01/01 - -- ND ND ND ND 12 ND ug/L 03/01/02 - -- ND ND ND ND ND ND ug/L 09/01/02 - -- ND ND ND ND ND ND ug/L 04/01/03 - -- ND ND ND ND ND ND ug/L 10/01/03 - -- ND ND ND ND ND ND ug/L 03/01/04 - -- ND ND ND ND ND ND ug/L 09/01/04 - -- ND ND ND ND ND ND ug/L 05/01/05 - -- ND ND ND ND ND ND ug/L 10/01/05 - -- ND ND ND ND ND ND ug/L 04/01/06 - - ND ND ND ND ND ND ug/L 10/01/06 - - 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 - - ND ND ND ND ND ug/L 12/04/08 0.036 -- - ND ND ND ND ND ug/L 04/13/09 0.036 -- - ND ND ND ND ND ug/L 10/20/09 0.11 -- 0.11 0.11 0.11 0.11 0.11 ND ug/L 04/30/10 0.11 -- -- ND ND ND ND ND ug/L 10/11/10 0.11 -- -- ND ND ND ND ND ug/L 05/12/11 0.11 -- ND ND ND ND ND ND ug/L 10/07/11 0.55 -- ND ND ND ND ND ND ug/L 04/19/12 0.11 -- ND ND ND ND ND ND ug/L 10/26/12 0.11 -- ND ND ND ND ND ND ug/L 04/25/13 0.11 -- ND ND ND ND ND ND ug/L 09/12/13 0.11 - ND ND ND ND ND ND ug/L 04/25/14 0.11 - ND ND ND ND ND ND ug/L 10/02/14 0.11 - ND ND ND ND ND ND ug/L 04/06/15 0.11 - ND ND ND ND ND ND ug/L 10/07/15 0.11 - ND ND ND ND ND ND ug/L 04/20/16 0.11 -- ND ND ND ND ND ND ug/L 09/26/16 0.11 -- 0.190 J 0.124 J 0.205 J 0.187 J 0.316 J ND ug/L 04/28/17 0.11 -- 0.389 J 0.267 J 0.261 J 0.287 J 0.205 J ND ug/L 10/17/17 0.11 -- 0.819 J 0.655 J 0.698 J 0.840 J 0.425 J ND ug/L 04/16/18 0.11 -- 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 u /L 10/15/20 0.22 2.0 ND ND ND ND ND ND Vanadium ug/L 03/01/00 - -- ND ND ND ND ND ND No SW Standard ug/L 09/01/00 - -- ND ND ND ND ND ND ug/L 03/01/01 - -- ND ND ND ND ND ND ug/L 09/01/01 - -- ND ND ND ND ND ND ug/L 03/01/02 - -- ND ND ND ND ND ND 09/01/02 - -- ND 44 ND ND ND ND %ug/L L 04/01/03 - -- ND ND ND ND ND ND 10/01/03 - -- ND ND ND ND ND ND %ug/L L 03/01/04 - -- ND ND ND ND ND ND ug/L 09/01/04 - -- ND ND ND ND ND ND ug/L 05/01/05 - -- ND ND ND ND ND ND ug/L 10/01/05 - -- ND ND ND ND ND ND ug/L 04/01/06 - -- ND ND ND ND ND ND ug/L 10/01/06 - -- 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 -- - ND ND 9.3 J 2.4 J ND ug/L 12/04/08 1.4 -- - ND ND ND 2.5 J ND ug/L 04/13/09 0.7 -- - 4.2 J 2.1 J 2.5 J 2.6 J ND ug/L 10/20/09 1.4 - 10.7 J 2.19 J 1.81 J 2.79 J 1.86 J ND ug/L 04/30/10 1.4 - - ND ND ND 3.45 J ND ug/L 10/11/10 1.4 - - 8.27 J 3.03 J 2.55 J 2.02 J ND ug/L 05/12/11 1.4 - 8.52 J 1.90 J 2.35 J 2.27 J 2.42 J ND ug/L 10/07/11 1.4 - 11.9 J 21.0 J 2.27 J 6.55 J 1.66 J ND ug/L 04/19/12 1.4 - 2.33 J ND 1.48 J 1.60 J 1.44 J ND ug/L 10/26/12 1.4 - ND ND ND ND ND ND ug/L 04/25/13 1....4 2.3.1 J 5.99 J ND ND ND ND ug/L 09/12/13 14 21 J ND 1.70 J 1.53 J ND ND ug/L 04/25/14 1.4 17.9 J ND 4.7 J 225 J 1.60 J ND ug/L 10/02/14 14 422 ND 314 J 2.66 J 226 J ND ug/L 04/06/15 1.4 2.3 J ND 3.33 J ND 462 J ND ug/L 10/07/15 14 18.2 J 2.91 J 3.69 J 61.8 305 J ND ug/L 0/ 04/216 1.4 269 ND 12.J . 213 J 304 J ND ug/L 09/26/1 1.4 ND D 64 4.58 J ND ug/L 04/28/1 . 261 J 1.66 J 83J 2.35 J 236 J ND ug/L 10/17/17 1.4 2.42 J ND 7.92 J 3...42 J 2.88 J ND ug/L 04/16/18 1.4 2.33 J . 21 J 2.4J 294 J 3.67 J ND ug/L 10/181 14 8 J J 161 J 1.7J ND ug/L 0412/19 1 0 58 14 J . 416 J 2.39 J 1.7 J 2.0J ND 8/9 10/01 1. 4 1ug/L 0 2.45 J ND . 233 J 96 J 17J ND ug/L 04/20/20 1.4 10 1.75 J ND 2.28 J 2.49 J 1.85 J ND u 10/15/20 1.4 10 ND ND ND N ND N D Zinc u 03/01/00 - -- ND ND 31 58 68 ND SW Standard, Acute (ug/L) ug/L 09/01/00 - -- ND ND 130 50 60 ND SW-1=36 ug/L 03/01/01 - -- ND ND 66 ND 56 ND SW-2=36 ug/L 09/01/01 - -- 120 ND 60 ND 50 ND SW-3=36 %L 03/01/02 - -- ND ND 70 50 60 ND SW-4-36 ug/L 09/01/02 - - ND 180 80 ND ND ND SW-5=36 ug/L 04/01/03 - - ND ND ND ND 50 ND SW Standard, Chronic (ug/L) ug/L 10/01/03 - - ND ND 120 50 50 ND SW-1=36 ug/L 03/01/04 - - ND ND 52 ND ND ND SW- 2=36 ug/L 09/01/04 - -- 58 ND 56 ND 59 ND SW-3=36 ug/L 05/01/05 - -- ND ND ND ND ND ND SW-4=36 %L 10/01/05 - -- ND ND ND ND ND ND SW-5=36 ug/L 04101/06 - -- ND ND 51.6 ND ND ND ug/L 10/01/06 - -- 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 -- -- 5.8 J 6.4 J 154 20.4 ND ug/L 12/04/08 3.8 -- -- 22.4 47.9 35.3 34.6 ND ug/L 04/13/09 3.4 -- -- 24.9 21.4 25.8 27.2 ND ug/L 10/20/09 3.8 - 70.0 7.62 J 45.2 30.9 33.2 ND ug/L 04/30/10 3.8 - -- 6.64 J 46.1 34.0 54.2 ND ug/L 10/11/10 3.8 - -- 32.0 30.1 22.8 22.9 ND ug/L 05/12/11 3.8 - 76.2 10.1 33.5 27.7 36.9 ND ug/L 10/07/11 3.8 - 102 62.1 45.0 60.5 362 1 ND ug/L 04/19/12 3.8 - 5.98 J ND 32.0 21.6 22.9 ND ug/L 10/26/12 3.8 - 12.3 5.81 J 25.3 20...3 22...06 ND ug/L 04/2513 38 15 25.8 42.6 31.6 331 ND ug/L 00/12/13 3.8 9.73 J ND . 29.8 149 17.1 ND ug/L 04/2514 3 66.3 79 .9 J 33 37.2 337 ND 2/4 101 1 4 4 J .6ug/L 6 349 34.0 ND ug/L 0/O6/15 3 16.4 5.33 J 7.3 00 51.6 ND 10/07/15 17 1 78 8 J 252 1020 24 5ug/L ND ug/L 04/20/16 4.4 111 ND 95 31.5 447 ND ug/L 09/26/16 44 . 508 J 521 .. J 20 164 27.7 ND ug/L 04/28/17 44 11.0 698 J 64 21. 20.1 ND ug/L 10/17/17 4.4 8.83 J ND 32.6 571 J ND ND ug/L 04/16/18 4.4 -- 11 106 10.3 16.3 157 ND 10/18/18 4.4 10 1. 29 12.2 118 1ug/L 75 18.4 ND ug/L 04/12/19 4.4 10 11.6 16.2 13.9 121 15. ND ug/L 10/08/19 4.4 10 7.17 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 u /L 10/15/20 4.4 10 6.40 J ND 14.5 10.3 11.7 ND Acetone ug/L 03/01/00 - -- ND ND ND ND ND - SW Standard = 2000 ug/L ug/L 09/01/00 - -- ND ND ND ND ND ND ug/L 03/01/01 - -- ND ND ND ND ND ND ug/L 09/01/01 - -- ND ND ND ND ND ND ug/L 03/01/02 - -- ND ND ND ND ND ND ug/L 09/01/02 - -- ND ND ND ND ND ND ug/L 04/01/03 - -- ND ND ND ND ND ND ug/L 10/01/03 - -- ND ND ND ND ND ND ug/L 03/01/04 - -- ND ND ND ND ND ND ug/L 09/01/04 - -- ND ND ND ND ND ND ug/L 05/01/05 - -- ND ND ND ND ND ND ug/L 10/01/05 - -- ND ND ND ND ND ND ug/L 04/01/06 - -- ND ND ND ND ND ND ug/L 10/01/06 - -- 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 -- - ND ND ND ND ND ug/L 12/04/08 1.5 -- - 7.9 J 9.1 J 7.6 J 7.8 J ND ug/L 04/13/09 1.5 -- - ND ND ND ND ND ug/L 10/20/09 1.5 -- ND ND 6.0 J ND 6.2 J ND ug/L 04/30/11) 1.5 -- - 3.0 J 3.5 J 4.6 J 4.1 J ND ug/L 10/11/10 1.5 -- - ND ND ND ND ND ug/L 05/12/11 1.2 -- 9.7 J 7.5 J ND ND ND ND ug/L 10/07/11 1.2 -- ND ND ND ND ND ND ug/L 04/19/12 1.2 -- ND ND ND ND ND ND ug/L 10/26/12 1.2 -- ND 4.4 J ND ND ND ND ug/L 04/25/13 0.96 - 1.0 J 1.0 J ND ND 1.6 J ND ug/L 09/12/13 1.2 - ND ND ND ND ND ND ug/L 04/25/14 1.2 - ND ND ND ND ND ND ug/L 1.2/14 1.2 - ND ND ND ND ND ND ug/L 04/06/15 1.2 - ND ND ND ND ND ND ug/L 10/07/15 1.2 - ND ND ND ND ND ND ug/L 0.0/1S 1.2 - ND ND ND ND ND ND ug/L 09/26/16 10 -- ND 11 J ND ND 11 J ND ug/L 04/28/17 10 -- 23 B 19 B 19 B 36 B 16 B 33 J ug/L 10/17/17 10 -- ND ND ND ND ND ND ug/L 04/16/18 10 -- 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 GOLDER 4 of6 February 2021 19131339.102 TABLES 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 Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date Detection Quanitation Blanks SW-1 SW-2 SW-3 SW-4 SW-5 Limit Limit Chloroform ug/L 03/01/00 - -- ND ND ND ND ND ND No SW Standard ug/L 09/01/00 - -- ND ND ND ND ND ND ug/L 03/01/01 - -- ND ND ND ND ND ND ug/L 09/01/01 - -- ND ND ND ND ND ND ug/L 03/01/02 - -- ND ND ND ND ND ND ug/L 09/01/02 - -- ND ND ND ND ND ND ug/L 04/01/03 - -- ND ND ND ND ND ND ug/L 10/01/03 - -- ND ND ND ND ND ND ug/L 03/01/04 - -- ND ND ND ND ND ND ug/L 09/01/04 - -- ND ND ND ND ND ND ug/L 05/01/05 - -- ND ND ND ND ND ND ug/L 10/01/05 - -- ND ND ND ND ND ND ug/L 04/01/06 - - ND ND ND ND ND ND ug/L 10/01/06 - - ND ND ND ND ND ND ug/L 04/10/07 - - 0.16 0.16 2.5 1 0.69 1 0.6 1 ND ug/L 09/25/07 - - 0.37 1 ND 8.4 1.2 1 1.2 1 ND ug/L 05/05/08 0.2 - - ND ND ND ND ND ug/L 12/04/08 0.2 - - 0.2 0.58 1 0.2 0.2 ND ug/L 04/13/09 0.2 - - ND ND ND ND ND ug/L 10/20/09 0.2 - ND ND 2.4 1 2.1 1 1.3 1 ND ug/L 04/30/10 0.083 -- -- ND 1.8 1 ND ND ND ug/L 10/11/10 0.2 -- -- 0.2 7.4 2.0 1 2.0 1 ND ug/L 05/12/11 0.7 -- ND ND ND J ND ND ND ug/L 10/07/11 0.7 -- ND ND 2.4 1 0.92 1 1.1 1 ND ug/L 04/19/12 0.18 -- ND ND 1.0 1 0.45 1 ND ND ug/L 10/26/12 0.18 -- ND ND 1.2 1 ND ND ND ug/L 04/25/13 0.25 -- ND ND 0.51 1 ND ND ND ug/L 09/12/13 0.18 - ND ND 1.8 1 0.76 1 0.76 1 ND ug/L 04/25/14 0.18 - 1.6 1 ND 1.7 1 0.46 1 0.58 1 ND ug/L 10/02/14 0.18 - 1.2 1 ND 0.95 1 1.0 1 ND ND ug/L 04/06/15 0.18 - ND ND 0.49 1 ND ND ND ug/L 10/07/15 0.18 - ND ND 2.4 1 0.92 1 1.0 1 ND ug/L 04/20/16 0.18 - ND ND ND ND ND ND ug/L 09/26/16 0.18 -- ND ND 1.6 1 ND ND ND ug/L 04/28/17 0.18 -- ND ND ND ND ND ND ug/L 10/17/17 0.18 -- ND ND ND ND ND ND ug/L 04/16/18 0.18 -- 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 u /L 10/15/20 0.18 1.0 ND ND ND ND ND ND Di bromochloromethane ug/L 03/01/00 - -- NO NO NO ND ND ND No SW Standard ug/L 03/01/01 - -- NO ND ND ND ND ND ug/L 03/01/02 - -- NO ND ND ND ND ND ug/L 09/0,/02 - -- ND ND ND ND ND ND ug/L 04/01/03 - -- ND ND ND ND ND ND ug/L 10/01/03 - -- ND ND ND ND ND ND ug/L 03/01/04 - -- ND ND ND ND ND ND ug/L 09/01/04 - -- ND ND ND ND ND ND ug/L 05/01/05 - -- ND ND ND ND ND ND ug/L 10/01/05 - -- ND ND ND ND ND ND ug/L 04/01/06 - -- ND ND ND ND ND ND ug/L 04/10/07 - -- ND ND 0.54 1 ND ND ND ug/L 09/25/07 - -- ND ND 2.8 1 ND ND ND ug/L 05/05/08 0.28 -- -- ND ND ND ND ND ug/L 12/04/08 0.32 -- -- ND ND ND ND ND ug/L 04/13/09 0.32 -- -- ND ND ND ND ND ug/L 10/20/09 0.32 -- ND ND ND ND ND ND ug/L 04/30/10 0.067 - -- ND ND ND ND ND ug/L 10/11/10 0.32 - -- 0.32 6.6 1.2 1 4.6 ND ug/L 05/12/11 0.63 - ND ND ND ND ND ND ug/L 10/07/11 0.63 - ND ND ND ND ND ND ug/L 04/19/12 0.17 - ND ND ND ND ND ND ug/L 10/26/12 0.17 - ND ND ND ND ND ND ug/L 04/25/13 0.49 - ND ND ND ND ND ND ug/L 09/12/13 0.17 - ND ND ND ND ND ND ug/L 04/25/14 0.17 - ND ND ND ND ND ND ug/L 10/02/14 0.17 - ND ND ND ND ND ND ug/L 04/06/15 0.17 -- ND ND ND ND ND ND ug/L 10/07/15 0.17 -- ND ND ND ND ND ND ug/L 04/20/16 0.17 -- ND ND ND ND ND ND ug/L 09/26/16 0.17 - ND ND ND ND ND ND ug/L 04/28/17 0.17 -- ND ND ND ND ND ND ug/L 10/17/17 0.17 -- ND ND ND ND ND ND ug/L 04/16/18 0.17 -- 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 u /L 10/15/20 0.17 1.0 ND ND ND ND ND ND 1,4-Dichlorobenzene ug/L 03/01/00 - -- ND ND ND ND ND ND SW Standard = 100 ug/L ug/L 0.1/01 - -- ND ND ND ND ND ND 03/01/02 - -- ND ND ND ND ND ND %ug/L !- 09/01/02 - -- ND ND ND ND ND ND ug/L 04/01/03 - -- ND ND ND ND ND ND ug/L 10/01/03 - - ND ND ND ND ND ND ug/L 03/01/04 - - ND ND ND ND ND ND ug/L 09/01/04 - -- ND ND ND ND ND ND ug/L 05/01/05 - -- ND ND ND ND ND ND ug/L 10/01/05 - -- ND ND ND ND ND ND ug/L 04/01/06 - -- 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 -- -- ND ND ND ND ND ug/L 12/04/08 0.38 - -- ND ND ND ND ND ug/L 04/13/09 0.38 - -- ND ND ND ND ND ug/L 10/20/09 0.38 - ND ND ND ND ND ND ug/L 04/30/10 0.1 - -- ND ND ND ND ND ug/L 10/11/10 0.38 - -- ND ND ND ND ND ug/L 05/12/11 0.79 - ND ND ND ND ND ND ug/L 10/07/11 0.79 - ND ND ND ND ND ND ug/L 04/19/12 0.19 - ND ND ND ND ND ND ug/L 10/26/12 0.19 - ND ND ND ND ND ND ug/L 04/25/13 0.14 - ND ND 0.46 1 ND 0.19 1 ND ug/L 09/12/13 0.19 -- ND ND ND ND ND ND ug/L 04/25/14 0.19 -- ND ND ND ND ND ND ug/L 10/02/14 0.19 -- ND ND ND ND ND ND ug/L 04/06/15 0.19 - ND ND ND ND ND ND ug/L 10/07/15 0.19 - ND ND ND ND ND ND ug/L 04/20/i6 0.19 - ND ND ND ND ND ND ug/L 09/26/16 0.19 - ND ND ND ND ND ND ug/L 04/28/17 0.19 - ND ND ND ND ND ND ug/L 10/17/17 0.19 - ND ND ND ND ND ND ug/L 0.16/18 0.19 - ND ND ND ND ND ND ug/L 10/18/18 0.19 1.0 ND ND ND ND ND ND ug/L 0.12/19 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 u L 10/15/20 0.19 1.0 ND ND ND ND ND ND Chloromethane ug/L 03/01/00 - - ND ND ND ND ND ND No SW Standard ug/L 09/01/00 - - ND ND ND ND ND ND ug/L 03/01/01 - -- ND ND ND ND ND ND ug/L 09/01/01 - -- ND ND ND ND ND ND ug/L 03/01/02 - -- ND ND ND ND ND ND ug/L 09/01/02 - -- ND ND ND ND ND ND ug/L 04/01/03 - -- ND ND ND ND ND ND ug/L 10/01/03 -- -- ND ND ND ND ND ND ug/L 03/01/04 -- -- ND ND ND ND ND ND ug/L 09/01/04 -- -- ND ND ND ND ND ND ug/L 05/01/OS -- -- ND ND ND ND ND ND ug/L 10/01/05 - - ND ND ND ND ND ND ug/L 04/01/O6 - - ND ND ND ND ND ND ug/L 10/01/06 - - 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 - -- ND ND ND ND ND ug/L 12/04/08 0.34 - -- ND ND ND ND ND ug/L 04/13/09 0.34 - -- ND ND ND ND ND ug/L 10/20/09 0.34 - ND ND ND ND ND ND ug/L 04/30/10 0.05 - -- ND ND ND ND ND ug/L 101, 1/10 0.34 - -- 0.82 B 0.34 0.34 B 0.62 B 0.43 1 ug/L 05/12/11 0.55 -- ND ND ND ND ND ND ug/L 10/07/11 0.55 -- ND ND ND ND ND ND ug/L 04/19/12 0.13 - ND ND ND ND ND ND ug/L 10/26/12 0.13 - ND ND ND ND ND ND ug/L 04/25/13 0.44 - ND ND ND ND ND ND ug/L 09/12/13 0.13 - ND ND ND ND ND ND ug/L 04/25/14 0.13 - ND ND ND ND ND ND ug/L 10/02/14 0.13 - ND ND ND ND ND ND ug/L 04/06/15 0.13 - ND ND ND ND ND ND ug/L 10/07/15 0.13 - ND ND ND ND ND ND ug/L 04/20/i6 0.13 - ND ND ND ND ND ND ug/L 09/26/16 0.13 - ND ND ND ND ND ND ug/L 04/28/17 0.13 - 0.42 1 ND ND 0.78 1 0.41 1 ND ug/L 10/17/17 0.13 - ND ND ND ND ND ND ug/L 0.16/18 0.13 - NO NO 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 u /L 10/15/20 0.13 1.0 ND ND ND ND ND ND GOLDER 5 of6 February 2021 19131339.102 TABLES 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 Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date Detection Quanitation Blanks SW-1 SW-2 SW-3 SW-4 SW-5 Limit Limit Methylene Chloride ug/L 03/01/00 - -- NO NO NO NO NO NO No SW Standard ug/L 09/01/00 - -- NO NO NO NO NO NO ug/L 03/01/01 - -- NO NO NO NO NO NO ug/L 09/01/01 - -- NO NO NO NO NO NO ug/L 03/01/02 - -- NO NO NO NO NO NO ug/L 09/01/02 - -- NO NO NO NO NO NO ug/L 04/01/03 - -- NO NO NO NO NO NO ug/L 10/01/03 - -- NO NO NO NO NO NO ug/L 03/01/04 - -- NO NO NO NO NO NO ug/L 09/01/04 - -- NO NO NO NO NO NO ug/L 05/01/05 - -- NO NO NO NO NO NO ug/L 10/01/05 - -- NO NO NO NO NO NO ug/L 04/01/06 - - NO NO NO NO NO NO ug/L 10/01/06 - - NO NO NO NO NO NO ug/L 04/10/07 - - NO NO NO NO NO NO ug/L 09/25/07 - - NO NO NO NO NO NO ug/L 05/05/08 0.24 - - NO NO NO NO NO ug/L 12/04/08 0.53 - -- NO NO NO NO NO ug/L 04/13/09 0.53 - -- NO NO NO NO NO ug/L 10/20/09 0.53 - NO NO NO NO NO NO ug/L 04/30/10 0.07 -- -- NO NO NO NO NO ug/L 10/11/10 0.53 -- -- NO NO NO NO NO ug/L 05/12/11 0.14 - NO NO NO NO NO NO ug/L 10/07/11 0.14 - NO NO NO NO NO NO ug/L 04/19/12 0.23 - NO NO NO NO NO NO ug/L 10/26/12 0.23 - NO NO NO NO NO NO ug/L 04/25/13 0.5 - NO NO NO NO NO NO ug/L 09/12/13 0.23 - NO NO NO NO NO NO ug/L 04/25/14 0.23 - NO NO NO NO NO NO ug/L 10/02/14 0.23 - NO NO NO NO 0.77 J NO ug/L 04/06/15 0.23 - NO NO NO NO NO NO ug/L 10/07/15 0.23 - NO NO NO NO NO NO ug/L 04/20/16 0.23 - NO NO NO NO NO NO ug/L 09/26/16 0.23 -- NO NO NO NO NO NO ug/L 04/28/17 0.23 -- NO NO NO NO NO NO ug/L 10/17/17 0.23 -- NO NO NO NO NO NO ug/L 04/16/18 0.23 -- NO NO NO NO NO NO ug/L 10/18/18 0.23 1.0 NO NO NO NO NO NO ug/L 04/12/19 0.23 1.0 NO NO NO NO NO 0.73 J ug/L 10/08/19 0.23 1.0 NO NO NO NO NO NO ug/L 04/20/20 0.23 1.0 NO NO NO NO NO NO u /L 10/15/20 0.23 1.0 NO NO NO NO NO NO Trichloroethene ug/L 03/01/00 - -- NO NO NO NO NO NO SW Standard ug/L 09/01/00 - -- NO NO NO NO NO NO Human Health = 30 ug/L ug/L 03/01/01 - -- NO NO NO NO NO NO ug/L 09/01/01 - -- NO NO NO NO NO NO ug/L 03/01/02 - -- NO NO NO NO NO NO ug/L 09/01/02 - -- NO NO NO NO NO NO ug/L 04/01/03 - -- NO NO NO NO NO NO ug/L 10/01/03 - -- NO NO NO NO NO NO ug/L 03/01/04 - -- NO NO NO NO NO NO ug/L 09/01/04 - -- NO NO NO NO NO NO ug/L 05/01/05 - -- NO NO NO NO NO NO ug/L 1 1101 /05 - -- NO NO NO NO NO NO ug/L 04/01/06 - -- NO NO NO NO NO NO ug/L 10/01/06 - -- NO NO NO NO NO NO ug/L 04/10/07 - -- NO NO NO NO NO NO ug/L 09/25/07 - -- NO NO NO NO NO NO ug/L 05,05/08 0.25 -- - NO NO NO NO NO ug/L 12/04/08 0.38 -- - NO NO NO NO NO ug/L 04/13/09 0.38 -- -- NO NO NO NO NO ug/L 10/20/09 0.38 - NO NO NO NO NO NO ug/L 04/30/10 0.13 - -- NO NO NO NO NO ug/L 10/11/10 0.38 - -- NO NO NO NO NO ug/L 05/12/11 0.72 - NO NO NO NO NO NO ug/L 10/07/11 0.72 - NO NO NO NO NO NO ug/L 04/19/12 0.15 - NO NO 0.69 J NO NO NO ug/L 10/26/12 0.15 - NO NO NO NO NO NO ug/L 04/25/13 0.23 - NO NO NO NO NO NO ug/L 0.12/13 0.15 -- NO NO NO NO NO NO ug/L 04/25/14 0.15 -- NO NO NO NO NO NO ug/L 10/02/14 0.15 -- NO NO NO ND NO NO ug/L 04/06/15 0.15 - NO NO NO NO NO NO ug/L 10/07/15 0.15 - NO NO NO NO NO NO ug/L 0.0/16 0.15 - NO NO NO NO NO NO ug/L 09/26/16 0.15 - NO NO NO NO NO NO ug/L 04/28/17 0.15 -- NO NO NO NO NO NO ug/L 10/17/17 0.15 -- NO NO NO NO NO NO ug/L 0.16/18 0.15 -- NO NO NO NO NO NO ug/L 10/18/111 0.15 1.0 NO NO NO NO NO NO ug/L 0.12/19 0.15 1.0 NO NO NO NO NO NO ug/L 10/08/19 0.15 1.0 NO NO NO NO NO NO ug/L 04/20/20 0.15 1.0 NO NO NO NO NO NO u L 10/15/20 0.15 1.0 NO NO NO NO NO NO Xylenes(Total) ug/L 09/25/07 - NO NO NO NO NO NO ug/L 05/05/08 0.67 -- NO NO NO NO -- ug/L 12/04/08 0.4 - NO NO NO NO -- ug/L 04/13/09 0.4 - NO NO NO NO -- ug/L 10/20/09 0.4 NO NO NO NO NO NO ug/L 04/30/10 0.22 -- NO NO NO NO -- ug/L 10/11/10 0.4 -- NO NO NO NO NO ug/L 05/12/11 2.1 NO NO NO NO NO -- ug/L 10/07/11 2.1 NO NO NO NO NO -- ug/L 04/19/12 0.45 NO NO NO NO NO -- ug/L 10/26/12 0.45 NO NO NO ND NO -- ug/L 04/25/13 0.67 NO NO NO ND NO - ug/L 09/12/13 0.45 NO NO NO ND NO -- ug/L 04/25/14 0.45 NO NO NO ND NO -- ug/L 10/02/14 0.45 NO NO NO ND NO -- ug/L 04.6/15 0.45 NO NO NO ND NO -- ug/L 10/07/15 0.45 NO NO NO ND NO -- ug/L 0.0/i6 0.45 NO NO NO ND NO -- ug/L 09/26/16 0.45 NO NO NO ND NO -- ug/L 0.8/17 0.45 NO NO NO ND NO ND ug/L 10/17/17 0.45 NO NO NO ND NO NO ug/L 04/16/18 0.45 NO NO NO ND ND NO ug/L 10/18/18 0.45 ND NO NO ND ND NO ug/L 04/12/19 0.45 3.0 ND NO NO ND ND NO ug/L 10/08/19 0.45 3.0 ND NO NO ND ND NO ug/L 04/20/20 0.45 3.0 ND NO NO ND 1.5 J NO ug/L 10/15/20 0.45 3.0 NO ND NO ND ND NO IA-Dioxere ug/L 10/18/18 1.2 2.0 NO ND NO 2.1 1.5 J NO (SW Standard = 80 ug/L) ug/L 04/12/19 1.2 2.0 NO 1.6 J NO NO ND NO ug/L 10/08/19 1.2 2.0 ND 1.3 J NO 1.2 J ND NO ug/L 04/20/20 0.80 2.0 ND 1.6 J NO 0.89 J 0.91 J ND u L 10/15/20 0.80 2.0 ND 1.2 J NO NO 1.0 J ND Tetrahydrofuran ug/L 04/20/16 0.8 - NO NO NO NO NO NO No SW standard ug/L 09/26/16 0.8 -- NO NO NO NO NO NO ug/L 04/28/17 0.17 -- NO NO NO NO NO NO 10/18/18 0.53 1.0 - - - -- - NO %ug/L L 04/12/19 0.53 1.0 - - - -- NO NC u /L 10/08/19 0.53 1.0 NO NC 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 SBME Engineering # = EPA Action Level = EPA Secondary MCL Blanks = field, trip and method blanks IMAC = Interim Maximum Allowable Concentration (under NC 2L Rules) EPA MCL = United States Environmental Protection Agency Maximum Contaminant Level MDL = laboratory method detection limit ug/L = micrograms per liter mg/L = milligrams per liter nM = nano mols SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on 01/18/07 -- = no data available or no limit established NC 2L = North Carolina Water Quality Standard ND = not detected above the laboratory detection limit or stated reporting limit J = Prior to the November 2018 event, J flags are estimated values below the SWS Reporting limit. Beginning with the November 2018 event, J flags are estimated values between MDL and PQL. The following dilutions were noted for the October 2020 event: antimony, selenium, and thallium by 2x (all points) Laboratory method blank data was unavailable for data prior to April 2017. However, B flags for the 04/16/09, 10/07/09, and 10/11/10 were present on laboratory electronic files. Hardness values collected last during the October 2020 event (mg/L): SW-1 =4.4, SW-2 = 4.7, SW-3 = 6.0, SW-4 = 4.0. SW-5 = 4.4 GOLDER 6 of Febmary 2021 19131339.102 TABLE 7 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 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 1 10/15/20 1 221 192 216 1 221 223 4 GOLDER of 2 February 2021 19131339.102 TABLE 7 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 O5/10/05 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 O5/02/08 - - - - -- °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 O5/10/11 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 1 18.5 17.2 18.1 16.6 15.8 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 Oxidation Reduction Potential (field) mV 04/25/17 69.8 50.6 72.3 79.4 77.3 mV 10/16/17 81.7 60.9 174.0 81.3 10.7 mV 04/16/18 119.5 95.2 202.0 190.5 115.8 mV 10/18/18 115.1 61.7 97.2 143.1 7.9 mV 04/08/19 124.5 143.2 5.3 101.8 332.5 mV 10/07/19 137.1 17.2 179.6 159.5 170.9 mV 04/20/20 179.1 7.7 117.5 144.2 77.8 mV 10/15/20 198.9 -2.6 190.0 147.3 70.9 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 m /L 10/15/20 7.37 8.20 7.47 8.05 7.72 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 4 GOLDER 2 of2 Figures LEGEND J SW-3 LOCATED —1600 FT. WEST lip � / 1700000 —4yVV r I . VVCJ I SW-2 LOCATED —500 FT. WEST 1 n)1 684.67 �7 11-7 683.78 I 1)10 • 681.36 MSW LANDFILL �DIJ LIMITS OF WASTE 683.53 CLIENT CITY OF GREENSBORO CONSULTANT SW-4 LOCATED —900 FT. EAST ,06 1 i1 ftio 00000 YYYY-MM-DD 2020-12-08 DESIGNED GO L D F R PREPARED REVIEWED GOLDER ASSOCIATES NC. INC. APPROVED TJM BPG DYR RPK 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 OCTOBER 12-13, 2020. 4. GROUNDWATER CONTOURS ARE BASED ON LINEAR INTERPOLATION BETWEEN AND EXTRAPOLATION FROM KNOWN DATA, TOPOGRAPHIC CONTOURS, AND KNOWN FIELD CONDITIONS. THEREFORE, GROUNDWATER CONTOURS MAY NOT REFLECT ACTUAL GROUNDWATER CONDITIONS. 5. GROUNDWATER CONTOUR LINES SHOW THE WATER TABLE SHAPE AND ELEVATION THESE CONTOURS ARE INFERRED LINES FOLLOWING THE GROUNDWATER SURFACE AT A CONSTANT ELEVATION ABOVE SEA LEVEL. THE GROUNDWATER FLOW DIRECTION IS GENERALLY PERPENDICULAR TO THE GROUNDWATER SURFACE CONTOURS, SIMILAR TO THE RELATIONSHIP BETWEEN SURFACE WATER FLOW AND TOPOGRAPHIC CONTOURS. 6. ELEVATIONS SHOWN IN THIS DRAWING ARE IN FEET ABOVE MEAN SEA LEVEL DATUM ("MEAN SEA LEVEL DATUM" REFERS TO THE NATIONAL GEOTETIC VERTICAL DATUM (NGVD) OF 1929) AND COORDINATES ARE EXPRESSED IN TERMS OF THE STATE PLANE COORDINATE SYSTEM. 7. SURFACE WATER LOCATIONS ARE APPROXIMATE 8. TOPOGRAPHY PROVIDED BY BRADY SURVEYING CO. FROM AERIAL PHOTOGRAPHY DATED NOVEMBER 9, 1994. 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 `t,,,tf1u1� c,• �,. , or " ►WHITE ST � A 0 a '"' D* 1 r► I f 0 1 a P I(EELr RD ,. W 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 OCTOBER 12-13, 2020 PROJECT NO. 19-131339 0 0 FIGURE 1 0 LEGEND ❑ SW-1 SURFACE WATER MONITORING POINT ,ate' '�1.''•.. � _ r sri CLIENT CITY OF GREENSBORO 6, ULJIUN CU xr GO L D E R PREPARED SEP REVIEWED DYR GOLDER ASSOCIATES NC, INC. APPROVED RPK 1 NOTES 1. SURFACE WATER LOCATIONS ARE APPROXIMATE. 2. 7.5 MINUTE USGS QUADRANGLE, MCLEANSVILLE, NORTH CAROLINA, 2016. SITE LOCATION MAP NOT TO SCALE o 0 0 1500 3000 1" = 1500' FEET PROJECT WHITE STREET LANDFILL CITY OF GREENSBORO GREENSBORO, NORTH CAROLINA TITLE SURFACE WATER LOCATION MAP PROJECT NO. FIGURE 166842117 0 2 APPENDIX A Groundwater and Surface Water Sampling Logs GOLDER Project Name: Cityof Greensboro Well ID: /LAW -)_; Well Diameter: 2 inches Depth to Bottom: 3LL QU feet Pumping Rate: }'2-. v mUmin. DATE: 16 /? - ad 2d GROUNDWATER SAMPLING LOG Project No.IPhase No.: 19131339,102 Sampler(s): T- 111arfwv Z Initial Depth to Water: 16-99 feet Water Column Thickness: r p feet System Volume. 772 Equipment: YSI, Hach 2100Q, Dedicated Bladder Pum , MP-15, Wafer Level Meter Sp. Cond. Comments (w aher conditions, color, type of sample, purge -water management, etc.): �- r0 0 rt'� 1019 Signature: QAIQC Sign Off: Date: 1 -o Date: 1 Z- Z t- L n7.t2 u GOLDER Project Name; City of Greensboro Well ID:} Well Diameter: 2 inches Depth to Bottom: feet Pumping Rate: Sb mLlmin. DATE: I D (512)S0 GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339,102 Sampler(s); _ CQc OLS 7re ] d, ~I~u+ _A s— Initial Depth to Water: feet Water Column Thickness: feet System Volume: (-+5 Equipment: YS1, Hach 21OOQ, dedicated Bladder Pump, MP-15, Wafer Level Meter ®Sp. Cond. ' Dis; Comments (weather conditions, color, type of sample, purge -water management, etc.): q0o Signature; - Date: (6((q-2b20 QAlQC Sign Off: ,, ���„1 Date: IZ- 17-zo u GOLDER Project Name: City of Greersboro Well ID: ►4 -X:— Z' Well Diameter: 2 inches Depth to Bottom: 14.0 feet Pumping Fate: 1.0 mUmin. DATE: GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339.102 Sampler(s): _ Ulco(�-S ��- Agg'k Initial Depth to Water: b. c, feet Water Column Thickness: 1 feet System Volume: (o Ty Equipment: YSI, Hach 2100Q, Dedicated Bladder Pump, MP-15, Water Level Meter (US/cm)'M (mg/L) M, (millivolts) Comments (weather conditions, color, type of sample, purge -water management, etc,): Ca 16 Signature: Date: QA1QC Sign ff: Date: I?,-[ ?—UZAJ I GOLDEP Project Name: City of Greensboro Well ID: s - 3 Well Diameter: 2 inches Depth to Bottom: 24- oo feet Pumping Rate: 1150 mLlmin DATE: 10 it l 2-0211> GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339.102 Sampler(s): s _ Y Initial Depth to Water: � L' 40 3 feet Water Column Thickness:yu C.) feet System Volume: Equipment: YSI, Hach 2100Q, Dedicated Bladder Pump, MP-15, Water Level Meter ® r Cond. ® ' r i ® • r r' �401111102+ ----�M SIR Comments (weather conditions, color, type of sample, purge -water management, etc.): Signature: Date: ( Z,�d Q QAIQC Sig if: OZZZ;. e, `?rA" Date: I L lb} ML1N GOLDER Project Name: City of Greensboro Well ID - Well Diameter: 2 Inches Depth to Bottom: I. C7 feet Pumping Rate: 160 mLlmin. DATE: !D - 15 .. 2 "z GROUNDWATER SAMPLING LOG Project No./Phase No.: 19131339.102 Sampler(s): T- /1' 14 f f-,rw Initial Depth to Water: Z_ feet Water Column Thickness: 11,01 feet System Volume: 520 Equipment: YSI, Hach 2100Q, Dedicated Bladder Pump, MP-15, Water Level Meter Time pH (S.u) Sp. bond. (uSlcm) Turb (NTU) Dis 02 (mg/L) Temp. (°C) ORP (millivolts) DTW (feet) IW 11 S'Ll,9 3 7 I. , i 3.1,v f � 7`1 31, jj0. 0. 3.$7 11 "3 70 �o , I -I 1L 5 ,3 -7 u pbL rJ `� , `] 0 . ? 5 7 81 9 -o -70 `1. 341 N `1 —111. r� -�1 .Y 3.5 121 U 85 1 11 Y-6 -- ll, -3.53 -7 .'1 3, immentsAweather conditions, color, type of sample, purge -water management, etc.): e015 G Signature: QAIQC Sign Off: Date: 10 -1 S 2u ?v Date: ( ?-- - 1'7 —�Zw DATE: I - J S - 2,,2, G O L d E P SURFACE WATER SAMPLING LOG Project Name: City of Greensboro Project No./Phase No.: 19131339 Sample ID: Sw - Sampler(s): . Mevr�.v*-Z Sampling Location: /Vtrf�l w A [ /f Equipment: YSI, Turbidimeter Time 152e) pH S.U.5l -7. b Sp. Cond. us/cm lilt). Turb. ntu Dis. 02 mg1L 7 V7 Temp. oC Ig, ORP mv ! CS, 9 1 Surface Water Sampling Location Sketch t Comments (sample methodology, weather conditions, color, silt, etc.): Signature: Date: _ - J 5-7,2,, QAlQC Sign Off: ,,,Gw Date: tGYz.J GOLDER DATE: r d - /5 0 '? v SURFACE WATER SAMPLING LOG Project Name: City of Greensboro Project No.IPhase_No.: 19131339 Sample ID: !•v Sampler(s): 1 -Al41r LQ _ Sampling Location: w a7 Lr e1hu,it T Equipment: YSI, Turbidimeter Time t 39? pH s.u. - Sp. Cond. u S/= 1,2,4 Turb.� ntu Dis.O. mg/L C� Temp. vC 1� ORP mv Surface Water Sampling Location Sketch r Comments (sample methodology, weather conditions, color, slit, etc.): Signature: = Date: d QA1QC Sign Off: ]4"X . � Date: 12.Y7 GOLDER DATE: I U SURFACE WATER SAMPLING LOG Project Name: City of Greensboro Project No./Phase No.: 19131339 Sample ID: L �. • 3 Sampler(s): `^ k,vf� Sampling Location: elm- 4 C'M W- kr `trv,,�-r-qA� u Equipment: YSI, Turbidimeter dd Pe(' Time JWW cl pHi S.U. Sp. Cond. US/cm -215 Tu rb. ntu 4, Dis. 02 mg1L -7 tL) Temp. 6C }, ORP mv Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QAIQC Sign Off: ,,� r], . Date: ) L/ - / S -- 2c -2 v Date: 1't- ?,j DATE: 14 yl 2-u 7 o k> G O L D E R SURFACE WATER SAMPLING LOG Project Name: City of Greensboro Project NodPhase No.: 19131339 Sample ID: - Sampler(s): -T. /1A-kMvez- A/, 7ep td,, : >tre s . Sampling Location: Equipment: YSI, Turbidimeter Time `i ID pH S.U. - 7 0 r� Sp. Cond.1.� US/cm {- Turb.� ntu Dis. 02 mg1L Temp. C b ORP mv Surface Water Sampling Location Sketch l oVv 6 vcl- fxj s Comments (sample methodology, weather conditions, color, silt, etc.): Signature: Date: QAlQC Sign Off: �%[,�,,, Date: is -� DATE: ] G `l 5 Z c 2.-4 k> G O L D E R SURFACE WATER SAMPLING LOG Project Name: City of Greensboro Project No./Phase No.: 19131339 Sample ID: k. - �j Sampler(s): r _ M c, r f me Z Sampling Location: II! _(J ' _I `Mw -1 Equipment: YSI, Turbidimeter Time I Dl), pH S.U. T Sp. Cond. US/cm -Z-ZI 'j Turb.+ ntu Dis. 02 mg/L 712 Temp. Qc 1-5.0v ❑RP mv 11).9 w Surface Water Sampling Location Sketch To L Comments (sample methodology, weather conditions, color, silt, etc.): Signature: 4-iG Date: J 0 "15 -7-°ZO QAIQC Sign Off: Date: �2•r'Y APPENDIX B October 2020 Groundwater Certificates -of -Analysis, Chain -of - Custody Forms and Laboratory Data Reviews ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Tuesday, October 27, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.107, Project Name/Desc: White Street LF-Phase I ENCO Workorder(s): CD16621 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, October 16, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, 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 22 PROJECT NARRATIVE Date: October 27, 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase I Lab ID: CD16621 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 1,2-Dibromoethane and Bromomethane; however, these analytes were not detected in the associated samples. The spike recovery for 1, 1 -Dichloroethene was outside control limits for the MSD sample, the precision between duplicate spikes of 1, 1 -Dichloroethene exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of this analyte. The spike recoveries for Arsenic and Chromium were outside control limits for the MS, MSD, and/or Post Digestion spike samples, the precision between duplicate spikes of Chromium exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these elements. 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 22 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-I1 Lab ID: CD16621-01 Sampled: 10/15/20 09:34 Received: 10/16/20 13:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/13/21 10/20/20 15:35 10/22/20 10:42 EPA 7470A EPA 7470A 11/12/20 10/21/20 16:21 10/23/20 14:16 EPA 8260D EPA 503013_MS 10/29/20 10/22/20 00:00 10/22/20 16:59 EPA 8260D EPA 503013_MS 10/29/20 10/25/20 10:52 10/25/20 19:15 Client ID: 4103-I2 Lab ID: CD16621-02 Sampled: 10/15/20 11:22 Received: 10/16/20 13:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/13/21 10/20/20 15:35 10/22/20 11:09 EPA 7470A EPA 7470A 11/12/20 10/21/20 16:21 10/23/20 14:23 EPA 8260D EPA 503013_MS 10/29/20 10/22/20 00:00 10/22/20 17:24 EPA 8260D EPA 503013_MS 10/29/20 10/25/20 10:52 10/25/20 19:45 Client ID: 4103-I3 Lab ID: CD16621-03 Sampled: 10/15/20 13:07 Received: 10/16/20 13:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/13/21 10/20/20 15:35 10/22/20 11:12 EPA 7470A EPA 7470A 11/12/20 10/21/20 16:21 10/23/20 14:25 EPA 8260D EPA 503013_MS 10/29/20 10/23/20 00:00 10/23/20 13:25 EPA 8260D EPA 5030B_MS 10/29/20 10/25/20 10:52 10/25/20 20:15 Client ID: 4103-I4 Lab ID: CD16621-04 Sampled: 10/15/20 12:28 Received: 10/16/20 13:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/13/21 10/20/20 15:35 10/22/20 11:14 EPA 7470A EPA 7470A 11/12/20 10/21/20 16:21 10/23/20 14:28 EPA 8260D EPA 503013_MS 10/29/20 10/23/20 00:00 10/23/20 11:44 EPA 8260D EPA 503013_MS 10/29/20 10/25/20 10:52 10/25/20 20:45 Client ID: 4303-Trip Blank I Lab ID: CD16621-05 Sampled: 10/15/20 09:34 Received: 10/16/20 13:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 10/29/20 10/23/20 00:00 10/23/20 12:10 EPA 8260D EPA 503013_MS 10/29/20 10/25/20 10:52 10/25/20 16:45 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 22 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4103-I1 Lab ID: CD16621-01 Analvte Results Flag MDL Q Units Method Notes 1,1-Dichloroethane 0.56 J 0.13 1.0 ug/L EPA 8260D 1,2-Dichlorobenzene 0.43 J 0.19 1.0 ug/L EPA 8260D 1,4-Dichlorobenzene 6.6 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 200 D 4.0 10 ug/L EPA 8260D Barium - Total 659 1.10 10.0 ug/L EPA 6010D Benzene 4.8 0.15 1.0 ug/L EPA 8260D Chlorobenzene 14 0.17 1.0 ug/L EPA 8260D Chromium - Total 4.94 J 1.40 10.0 ug/L EPA 6010D cis-1,2-Dichloroethene 0.87 J 0.15 1.0 uq/L EPA 8260D I Client ID: 4103-I2 Lab ID: CD16621-02 Analvte Results Flag MDL Q Units Method Notes 1,2-Dichlorobenzene 0.89 J 0.19 1.0 ug/L EPA 8260D 1,4-Dichlorobenzene 2.1 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 120 D 1.6 4.0 ug/L EPA 8260D Barium - Total 448 1.10 10.0 ug/L EPA 6010D Chlorobenzene 5.0 0.17 1.0 ug/L EPA 8260D Chromium - Total 3.37 J 1.40 10.0 ug/L EPA 6010D cis-1,2-Dichloroethene 0.44 J 0.15 1.0 ug/L EPA 8260D Lead - Total 4.17 J 3.10 10.0 ug/L EPA 6010D Client ID: 4103-I3 Lab ID: CD16621-03 Analvte Results Flag MDL PQL Units Method Notes 1,1-Dichloroethane 1.5 0.13 1.0 ug/L EPA 8260D 1,4-Dichlorobenzene 1.3 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 200 D 4.0 10 ug/L EPA 8260D Barium - Total 112 1.10 10.0 ug/L EPA 6010D Chlorobenzene 2.5 0.17 1.0 ug/L EPA 8260D Chromium - Total 7.27 J 1.40 10.0 uq/L EPA 6010D Client ID: 4103-I4 Lab ID: CD16621-04 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dichlorobenzene 4.4 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 39 0.80 2.0 ug/L EPA 8260D Barium - Total 710 1.10 10.0 ug/L EPA 6010D Chlorobenzene 6.4 0.17 1.0 ug/L EPA 8260D Chromium - Total 3.33 J 1.40 10.0 ug/L EPA 6010D Lead - Total 5.07 J 3.10 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 22 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-I1 Lab Sample ID:CD16621-01 Received: 10/16/20 13:00 Matrix: Ground Water Sampled:10/15/20 09:34 Work Order: CD16621 Project: White Street LF-Phase I Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 19:15 REF 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 0125009 EPA 8260D 10/25/20 19:15 REF 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 0125009 EPA 8260D 10/25/20 19:15 REF 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 19:15 REF 1,1-Dichloroethane [75-34-3]A 0.56 J ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 19:15 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 19:15 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 19:15 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 19:15 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 0125009 EPA 8260D 10/25/20 19:15 REF QV-01 1,2-Dichlorobenzene [95-50-1]A 0.43 J ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 19:15 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 19:15 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 0125009 EPA 8260D 10/25/20 19:15 REF 1,4-Dichlorobenzene [306-46-7]^ 6.6 ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 19:15 REF 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 0125009 EPA 8260D 10/25/20 19:15 REF 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 0125009 EPA 8260D 10/25/20 19:15 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 0125009 EPA 8260D 10/25/20 19:15 REF Acetone [67-64-1]^ 10 u ug/L 1 10 20 0125009 EPA 8260D 10/25/20 19:15 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 0125009 EPA 8260D 10/25/20 19:15 REF Benzene [71-43-2]A 4.8 ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 19:15 REF QV-01 Carbon disulfide [75-15-0]^ 1.5 u ug/L 1 1.5 5.0 0125009 EPA 8260D 10/25/20 19:15 REF Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Chlorobenzene [308-90-7]A 14 ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 19:15 REF cis-1,2-Dichloroethene [156-59-2]A 0.87 J ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 19:15 REF cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Ethylbenzene [100-41-4]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 0125009 EPA 8260D 10/25/20 19:15 REF Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 19:15 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 19:15 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 19:15 REF trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 0125009 EPA 8260D 10/25/20 19:15 REF Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 0125009 EPA 8260D 10/25/20 19:15 REF Xylenes(Total)[1330-20-7]^ 0.45 u ug/L 1 0.45 3.0 0125009 EPA 8260D 10/25/20 19:15 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-Il Lab Sample ID:CD16621-01 Received: 10/16/20 13:00 Matrix: Ground Water Sampled:10/15/20 09:34 Work Order: CD16621 Project: White Street LF-Phase I Sampled By: Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 55 1 50.0 109 % 53-136 OJ25009 EPA 8260D 10125120 19:15 REF Dlbromofluoromethane 55 1 50.0 110 % 67-129 OJ25009 EPA 8260D 1012512019:15 REF Toluene-d8 53 1 50.0 105 % 59-134 OJ25009 EPA 6260D 1012512019:15 REF 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 OJ21042 EPA 7470A 10/23/20 14:16 KAH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OJ20025 EPA 6010D 10/22/20 10:42 JDH Barium [7440-39-3]^ 659 ug/L 1 1.10 10.0 0120025 EPA 6010D 10/22/20 10:42 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OJ20025 EPA 6010D 10/22/20 10:42 JDH Chromium [7440-47-3]^ 4.94 J ug/L 1 1.40 10.0 0120025 EPA 6010D 10/22/20 10:42 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OJ20025 EPA 6010D 10/22/20 10:42 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OJ20025 EPA 6010D 10/22/20 10:42 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OJ20025 EPA 6010D 10/22/20 10:42 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 200 D ug/L 5 4.0 10 0122043 EPA 8260D 10/22/20 16:59 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffly Notes 5.6 1 5.00 111 % 75-125 OJ22043 EPA 8260D 10122120 16:59 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 22 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-I2 Lab Sample ID:CD16621-02 Received: 10/16/20 13:00 Matrix: Ground Water Sampled:10/15/20 11:22 Work Order: CD16621 Project: White Street LF-Phase I Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 19:45 REF 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 0125009 EPA 8260D 10/25/20 19:45 REF 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 0125009 EPA 8260D 10/25/20 19:45 REF 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 19:45 REF 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 19:45 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 19:45 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 19:45 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 19:45 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 0125009 EPA 8260D 10/25/20 19:45 REF QV-01 1,2-Dichlorobenzene [95-50-1]^ 0.89 J ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 19:45 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 19:45 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 0125009 EPA 8260D 10/25/20 19:45 REF 1,4-Dichlorobenzene [306-46-7]^ 2.1 ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 19:45 REF 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 0125009 EPA 8260D 10/25/20 19:45 REF 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 0125009 EPA 8260D 10/25/20 19:45 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 0125009 EPA 8260D 10/25/20 19:45 REF Acetone [67-64-1]^ 10 u ug/L 1 10 20 0125009 EPA 8260D 10/25/20 19:45 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 0125009 EPA 8260D 10/25/20 19:45 REF Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 19:45 REF QV-01 Carbon disulfide [75-15-0]^ 1.5 u ug/L 1 1.5 5.0 0125009 EPA 8260D 10/25/20 19:45 REF Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Chlorobenzene [308-90-7]^ 5.0 ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 19:45 REF cis-1,2-Dichloroethene [156-59-2]^ 0.44 J ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 19:45 REF cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Ethylbenzene [100-41-4]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 0125009 EPA 8260D 10/25/20 19:45 REF Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 19:45 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 19:45 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 19:45 REF trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 0125009 EPA 8260D 10/25/20 19:45 REF Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 0125009 EPA 8260D 10/25/20 19:45 REF Xylenes(Total)[1330-20-7]^ 0.45 u ug/L 1 0.45 3.0 0125009 EPA 8260D 10/25/20 19:45 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-I2 Lab Sample ID:CD16621-02 Received: 10/16/20 13:00 Matrix: Ground Water Sampled:10/15/20 11:22 Work Order: CD16621 Project: White Street LF-Phase I Sampled By: Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 52 1 50.0 104 % 53-136 OJ25009 EPA 8260D 10125120 19:45 REF Dlbromofluoromethane 57 1 50.0 114 % 67-129 OJ25009 EPA 8260D 1012512019:45 REF Toluene-d8 54 1 50.0 108 % 59-134 OJ25009 EPA 6260D 1012512019:45 REF 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 By Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 OJ21042 EPA 7470A 10/23/20 14:23 KAH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OJ20025 EPA 6010D 10/22/20 11:09 JDH Barium [7440-39-3]^ 448 ug/L 1 1.10 10.0 0120025 EPA 6010D 10/22/20 11:09 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OJ20025 EPA 6010D 10/22/20 11:09 JDH Chromium [7440-47-3]^ 3.37 J ug/L 1 1.40 10.0 0120025 EPA 6010D 10/22/20 11:09 JDH Lead [7439-92-1]^ 4.17 J ug/L 1 3.10 10.0 0120025 EPA 6010D 10/22/20 11:09 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OJ20025 EPA 6010D 10/22/20 11:09 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OJ20025 EPA 6010D 10/22/20 11:09 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 120 D ug/L 2 1.6 4.0 0122043 EPA 8260D 10/22/20 17:24 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffy Notes 5.5 1 5.00 109 % 75-125 OJ22043 EPA 8260D 10122120 17:24 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 22 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-I3 Lab Sample ID:CD16621-03 Received: 10/16/20 13:00 Matrix: Ground Water Sampled:10/15/20 13:07 Work Order: CD16621 Project: White Street LF-Phase I Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 20:15 REF 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 0125009 EPA 8260D 10/25/20 20:15 REF 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 0125009 EPA 8260D 10/25/20 20:15 REF 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 20:15 REF 1,1-Dichloroethane [75-34-3]A 1.5 ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 20:15 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 20:15 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 20:15 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 20:15 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 0125009 EPA 8260D 10/25/20 20:15 REF QV-01 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 20:15 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 20:15 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 0125009 EPA 8260D 10/25/20 20:15 REF 1,4-Dichlorobenzene [306-46-7]^ 1.3 ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 20:15 REF 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 0125009 EPA 8260D 10/25/20 20:15 REF 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 0125009 EPA 8260D 10/25/20 20:15 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 0125009 EPA 8260D 10/25/20 20:15 REF Acetone [67-64-1]^ 10 u ug/L 1 10 20 0125009 EPA 8260D 10/25/20 20:15 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 0125009 EPA 8260D 10/25/20 20:15 REF Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 20:15 REF QV-01 Carbon disulfide [75-15-0]^ 1.5 u ug/L 1 1.5 5.0 0125009 EPA 8260D 10/25/20 20:15 REF Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Chlorobenzene [108-90-7]A 2.5 ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 20:15 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 20:15 REF cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Ethylbenzene [100-41-4]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 0125009 EPA 8260D 10/25/20 20:15 REF Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 20:15 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 20:15 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 20:15 REF trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 0125009 EPA 8260D 10/25/20 20:15 REF Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 0125009 EPA 8260D 10/25/20 20:15 REF Xylenes(Total)[1330-20-7]^ 0.45 u ug/L 1 0.45 3.0 0125009 EPA 8260D 10/25/20 20:15 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 Of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-I3 Lab Sample ID:CD16621-03 Received: 10/16/20 13:00 Matrix: Ground Water Sampled:10/15/20 13:07 Work Order: CD16621 Project: White Street LF-Phase I Sampled By: Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 53 1 50.0 106 % 53-136 OJ25009 EPA 8260D 10125120 20:15 REF Dlbromofluoromethane 56 1 50.0 113 % 67-129 OJ25009 EPA 8260D 10125120 20:15 REF Toluene-d8 53 1 50.0 107 % 59-134 OJ25009 EPA 6260D 10125120 20:15 REF 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 OJ21042 EPA 7470A 10/23/20 14:25 KAH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OJ20025 EPA 6010D 10/22/20 11:12 JDH Barium [7440-39-3]^ 112 ug/L 1 1.10 10.0 0120025 EPA 6010D 10/22/20 11:12 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OJ20025 EPA 6010D 10/22/20 11:12 JDH Chromium [7440-47-3]^ 7.27 J ug/L 1 1.40 10.0 0120025 EPA 6010D 10/22/20 11:12 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OJ20025 EPA 6010D 10/22/20 11:12 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OJ20025 EPA 6010D 10/22/20 11:12 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OJ20025 EPA 6010D 10/22/20 11:12 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 5 4.0 10 0123037 EPA 8260D 10/23/20 13:25 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffy Notes 5.4 1 5.00 108 % 75-125 OJ23037 EPA 8260D 1012312013:25 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 of 22 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-I4 Lab Sample ID:CD16621-04 Received: 10/16/20 13:00 Matrix: Ground Water Sampled:10/15/20 12:28 Work Order: CD16621 Project: White Street LF-Phase I Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 20:45 REF 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 0125009 EPA 8260D 10/25/20 20:45 REF 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 0125009 EPA 8260D 10/25/20 20:45 REF 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 20:45 REF 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 20:45 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 20:45 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 20:45 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 20:45 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 0125009 EPA 8260D 10/25/20 20:45 REF QV-01 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 20:45 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 20:45 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 0125009 EPA 8260D 10/25/20 20:45 REF 1,4-Dichlorobenzene [306-46-7]^ 4.4 ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 20:45 REF 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 0125009 EPA 8260D 10/25/20 20:45 REF 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 0125009 EPA 8260D 10/25/20 20:45 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 0125009 EPA 8260D 10/25/20 20:45 REF Acetone [67-64-1]^ 10 u ug/L 1 10 20 0125009 EPA 8260D 10/25/20 20:45 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 0125009 EPA 8260D 10/25/20 20:45 REF Benzene[71-43-2]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 20:45 REF QV-01 Carbon disulfide [75-15-0]^ 1.5 u ug/L 1 1.5 5.0 0125009 EPA 8260D 10/25/20 20:45 REF Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Chlorobenzene [308-90-7]^ 6.4 ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 20:45 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 20:45 REF cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Ethylbenzene[100-41-4]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 0125009 EPA 8260D 10/25/20 20:45 REF Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 20:45 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 20:45 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 20:45 REF trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 0125009 EPA 8260D 10/25/20 20:45 REF Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 0125009 EPA 8260D 10/25/20 20:45 REF Xylenes (Total) [1330-20-7]^ 0.45 u ug/L 1 0.45 3.0 0125009 EPA 8260D 10/25/20 20:45 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-I4 Lab Sample ID:CD16621-04 Received: 10/16/20 13:00 Matrix: Ground Water Sampled:10/15/20 12:28 Work Order: CD16621 Project: White Street LF-Phase I Sampled By: Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 53 1 50.0 105 % 53-136 OJ25009 EPA 8260D 10125120 20:45 REF Dibromofluoromethane 56 1 50.0 111 % 67-129 OJ25009 EPA 8260D 10125120 20:45 REF Toluene-d8 53 1 50.0 105 % 59-134 OJ25009 EPA 6260D 10125120 20:45 REF 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 OJ21042 EPA 7470A 10/23/20 14:28 KAH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OJ20025 EPA 6010D 10/22/20 11:14 JDH Barium [7440-39-3]^ 710 ug/L 1 1.10 10.0 0120025 EPA 6010D 10/22/20 11:14 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OJ20025 EPA 6010D 10/22/20 11:14 JDH Chromium [7440-47-3]^ 3.33 J ug/L 1 1.40 10.0 0120025 EPA 6010D 10/22/20 11:14 JDH Lead [7439-92-1]^ 5.07 J ug/L 1 3.10 10.0 0120025 EPA 6010D 10/22/20 11:14 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OJ20025 EPA 6010D 10/22/20 11:14 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OJ20025 EPA 6010D 10/22/20 11:14 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 39 ug/L 1 0.80 2.0 0123037 EPA 8260D 10/23/20 11:44 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffy Notes 5.2 1 5.00 103 % 75-125 OJ23037 EPA 8260D 1012312011:44 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 of 22 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103-Trip Blank I Lab Sample ID:CD16621-05 Received: 10/16/20 13:00 Matrix: Water Sampled:10/15/20 09:34 Work Order: CD16621 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 Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 16:45 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 0125009 EPA 8260D 10/25/20 16:45 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 0125009 EPA 8260D 10/25/20 16:45 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 16:45 REF 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 16:45 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 16:45 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 16:45 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 16:45 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 0125009 EPA 8260D 10/25/20 16:45 REF QV-01 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 16:45 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 16:45 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 0125009 EPA 8260D 10/25/20 16:45 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 16:45 REF 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 0125009 EPA 8260D 10/25/20 16:45 REF 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 0125009 EPA 8260D 10/25/20 16:45 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 0125009 EPA 8260D 10/25/20 16:45 REF Acetone [67-64-1]A 10 u ug/L 1 10 20 0125009 EPA 8260D 10/25/20 16:45 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 0125009 EPA 8260D 10/25/20 16:45 REF Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 16:45 REF QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 0125009 EPA 8260D 10/25/20 16:45 REF Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 16:45 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 16:45 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 0125009 EPA 8260D 10/25/20 16:45 REF Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Styrene [100-42-5]A 0.11 Ll ug/L 1 0.11 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 16:45 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 16:45 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 16:45 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 0125009 EPA 8260D 10/25/20 16:45 REF Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 0125009 EPA 8260D 10/25/20 16:45 REF Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 0125009 EPA 8260D 10/25/20 16:45 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 Of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-Trip Blank I Lab Sample ID:CD16621-05 Received: 10/16/20 13:00 Matrix: Water Sampled:10/15/20 09:34 Work Order: CD16621 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 54 1 50.0 108 % 53-136 OJ25009 EPA 826OD 10125120 16:45 REF Dibromofluoromethane 52 1 50.0 104 % 67-129 OJ25009 EPA 826OD 1012512016:45 REF Toluene-d8 48 1 50.0 95 % 59-134 OJ25009 EPA 626OD 1012512016:45 REF Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL POLL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OJ23037 EPA 8260D 1O/23/20 12:10 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.2 1 5.00 104 % 75-125 OJ23037 EPA 826OD 1012312012:10 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 Of 22 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OJ25009 - EPA 5030B MS Blank (0325009-BLK1) Prepared: 10/25/2020 10:52 Analyzed: 10/25/2020 16:15 Analvte Result Flaq POL Units 1, 1, 1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 54 u9/L 50.0 108 53-136 Dibromofluoromethane 50 u9/L 50.0 100 67-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 15 of 22 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OJ25009 - EPA 5030B MS - Continued (� �Eo www.encolabs.com Blank (0325009-BLK1) Continued Prepared: 10/25/2020 10:52 Analyzed: 10/25/2020 16:15 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 55 u91L 50.0 110 59-134 LCS (0725009-BS3) Prepared: 10/25/2020 10:52 Analyzed: 10/25/2020 14:15 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 110 75-133 Benzene 17 1.0 ug/L 20.0 86 80-134 Chlorobenzene 19 1.0 ug/L 20.0 95 80-120 Toluene 19 1.0 ug/L 20.0 93 71-120 Trichloroethene 19 1.0 ug/L 20.0 96 74-120 Matrix Spike (0325009-MS1) Prepared: 10/25/2020 10:52 Analyzed: 10/25/2020 14:45 Source: CD16047-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 24 1.0 ug/L 20.0 0.21 U 119 75-133 Benzene 17 1.0 ug/L 20.0 0.15 U 87 80-134 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 98 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 97 71-120 Trichloroethene 20 1.0 ug/L 20.0 0.15 U 100 74-120 Matrix Spike Dup (0325009-MSD1) Prepared: 10/25/2020 10:52 Analyzed: 10/25/2020 15:15 Source: CD16047-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 32 1.0 ug/L 20.0 0.21 U 158 75-133 28 20 QM-07, QM-11 Benzene 18 1.0 ug/L 20.0 0.15 U 92 80-134 6 17 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 101 80-120 3 16 Toluene 20 1.0 ug/L 20.0 0.14 U 101 71-120 4 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 104 74-120 4 22 Metals by EPA 6000/7000 Series Methods - Quality Control Batch OJ21042 - EPA 7470A Blank (0321042-BLK3) Prepared: 10/21/2020 16:21 Analyzed: 10/23/2020 13:24 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 (0721042-BS3) Prepared: 10/21/2020 16:21 Analyzed: 10/23/2020 13:26 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.95 0.200 ug/L 5.00 99 80-120 Matrix Spike (0723042-MS1) Prepared: 10/21/2020 16:21 Analyzed: 10/23/2020 13:30 Source: CD15263-07 Spike Source %REC RPD Analvte Result Flaa Q Units Level Result %REC Limits RPD Limit Notes Mercury 4.92 0.200 ug/L 5.00 0.150 U 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 16 Of 22 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals by EPA 6000/7000 Series Methods - Quality Control Batch OJ21042 - EPA 7470A - Continued Matrix Spike Dup (0323042-MSDI) Prepared: 10/21/2020 16:21 Analyzed: 10/23/2020 13:33 Source: CD15263-07 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Mercury 4.81 0.200 ug/L 5.00 0.150 U 96 75-125 2 25 Post Spike (0321042-PS1) Prepared: 10/21/2020 16:21 Analyzed: 10/23/2020 13:36 Source: CD15263-07 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Mercury 5.40 0.200 ug/L 5.00 -0.0510 108 75-125 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OJ20025 - EPA 3005A Blank (0320025-BLK3) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:39 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 (0320025-BSI) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:46 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 181 10.0 ug/L 200 91 80-120 Barium 201 10.0 ug/L 200 101 80-120 Cadmium 18.9 1.00 ug/L 20.0 95 80-120 Chromium 193 10.0 ug/L 200 96 80-120 Lead 190 10.0 ug/L 200 95 80-120 Selenium 190 10.0 ug/L 200 95 80-120 Silver 197 10.0 ug/L 200 98 80-120 Matrix Spike (0320025-MS1) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:48 Source: CD16621-01 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 116 10.0 ug/L 200 7.60 U 58 75-125 QM-07 Barium 908 10.0 ug/L 200 659 124 75-125 Cadmium 16.6 1.00 ug/L 20.0 0.360 U 83 75-125 Chromium 208 10.0 ug/L 200 4.94 102 75-125 Lead 199 10.0 ug/L 200 3.10 U 99 75-125 Selenium 194 10.0 ug/L 200 6.20 U 97 75-125 Silver 212 10.0 ug/L 200 1.90 U 106 75-125 Matrix Spike Dup (0720025-MSD1) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:51 111 Source: CD16621-01 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 116 10.0 ug/L 200 7.60 U 58 75-125 0.6 20 QM-07 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 17 Of 22 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OJ20025 - EPA 3005A - Continued Matrix Spike Dup (0320025-MSDI) Continued Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:51 Source: CD16621-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Barium 907 10.0 ug/L 200 659 124 75-125 0.05 20 Cadmium 16.5 1.00 ug/L 20.0 0.360 U 83 75-125 0.8 20 Chromium 287 10.0 ug/L 200 4.94 141 75-125 32 20 QM-07, QM-11 Lead 198 10.0 ug/L 200 3.10 U 99 75-125 0.7 20 Selenium 181 10.0 ug/L 200 6.20 U 90 75-125 7 20 Silver 211 10.0 ug/L 200 1.90 U 106 75-125 0.4 20 Post Spike (0320025-PS1) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:53 Source: CD16621-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.130 0.0100 mg/L 0.200 -0.0831 65 80-120 QM-08 Barium 0.898 0.0100 mg/L 0.200 0.659 120 80-120 Cadmium 0.0167 0.00100 mg/L 0.0200 -0.00327 84 80-120 Chromium 0.208 0.0100 mg/L 0.200 0.00494 102 80-120 Lead 0.196 0.0100 mg/L 0.200 9.88E-5 98 80-120 Selenium 0.182 0.0100 mg/L 0.200 -0.0297 91 80-120 Silver 0.217 0.0100 mg/L 0.200 -0.00215 109 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OJ22043 - EPA 5030B MS Blank (0322043-BLKS) Prepared: 10/22/2020 00:00 Analyzed: 10/22/2020 09:43 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 5.3 ug/L 5.00 106 75-125 LCS (0322043-BS1) Prepared: 10/22/2020 00:00 Analyzed: 10/22/2020 09:18 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 92 80-133 Toluene-d8 5.0 ug/L 5.00 100 75-125 Matrix Spike (0322043-MS1) Prepared: 10/22/2020 00:00 Analyzed: 10/22/2020 18:39 Source: AD07012-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 98 80-133 Toluene-d8 5.2 ug/L 5.00 103 75-125 Matrix Spike Dup (0322043-MSD1) Prepared: 10/22/2020 00:00 Analyzed: 10/22/2020 19:04 Source: AD07012-03 Analvte 1,4-Dioxane Spike Source Result Flaq POL Units Level Result %REC 25 2.0 ug/L 25.0 0.80 U 98 Toluene-d8 5.4 Batch OJ23037 - EPA 5030E MS ug/L 5.00 108 %REC Limits RPD 80-133 0.7 75-125 RPD Limit Notes 19 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 18 Of 22 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OJ23037 - EPA 5030B MS - Continued Blank (0323037-BLK1) Prepared: 10/23/2020 00:00 Analyzed: 10/23/2020 10:24 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 5.4 ug/L 5.00 108 75-125 LCS (0323037-BS1) Prepared: 10/23/2020 00:00 Analyzed: 10/23/2020 09:59 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 27 2.0 ug/L 25.0 107 80-133 Toluene-d8 5.0 ug/L 5.00 101 75-125 Matrix Spike (0323037-MS1) Prepared: 10/23/2020 00:00 Analyzed: 10/23/2020 12:35 Source: AD07026-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 26 2.0 ug/L 25.0 1.0 100 80-133 Toluene-d8 5.4 ug/L 5.00 108 75-125 Matrix Spike Dup (0323037-MSD1) Prepared: 10/23/2020 00:00 Analyzed: 10/23/2020 13:00 Source: AD07026-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 27 2.0 ug/L 25.0 1.0 102 80-133 2 19 Toluene-d8 5.4 ug/L 5.00 108 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 19 Of 22 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. QM-08 Post -digestion spike did not meet method requirements due to confirmed matrix effects (dilution test). QM-11 Precision between duplicate matrix spikes of the same sample was outside acceptance limits. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 20 of 22 `L ( G7 (n Z 4 m co W A W iV m N 0 � y� 1^ 3 M. o 9i cl Q O U1 �r ` � m O V, 426 CD G m 00 O 8 m o a ;,f, h N '� J m 6 FL0 D n m p p n C a 'a -u m O i` 3` m m ro m O Ti �' WCD z Z m o z N N a n o� rn a a r i v a m Z ru ( C7 CD CD y JJ 0. O Z n D oa Gi n a� eb n m rn m � � N � b" x x x x 826M Appandbc 1.82000 SIM ID m !j -01 flf m V a p w o od C� m.9; x x x x Ag,As,Ba,Cd,Cr,Pb.Sa 0 ro m m m 0 t., w x x x Hg a to w z➢n N� k m n m v 2 o 8 N R i/ 7 a 0 O Q a d �Z ro N n �0 o 3 O ro m N Q m p 3 c $ 3 " m � � R QIt. 0 D rCD z _a G� c7 �T 0) X W Y 3 O a CDG `� G o ss+ C7 (9 w m N a 5 Q Page 21 of 22 Sample Preservation Verification ENCO Cary Work Order: CD16621 Client: Golder Associates, Inc. (GO007) ENCO Project: White Street LF-Phase I Project #: 1668421.107 Lagged In: 16-Oct-20 15:10 Logged By: Rachel Ann Y ish Preservation Check Performed By: Date/Time: �. l a:^ . CD16621-01 Cant Type Pres (pH) pH Checked / pH Adjusted Date/Time Reagent Used/Comments Requirement In Control Adiusted A 250mLP+HNO3 <2 Y'31 N I NA Y �N11 NA CD16621-02 Cant Type Pres (pH) Requirement pH Checked 1 In Control pH Adjusted Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y JI N / NA Y / 1N h NA �s CD16621-03 Clint Type Pres (pH) pH Checked / I.,-tn PH Adjusted Date/Time Reagent Used/Comments Requirement Control Adjusted A 250mLP+HNO3 <2 Y, N 1 NA Y I NA CD16621-04 Gant Type Pres (pH) pH Checked/ Datefl"ime pH Adjusted I Reagent Used/Comments Requirement In Control Adjusted A 250mLP�HNO3 12 l' 1! N / NA Y ¢' N 4, NA C D16621-06 Cant hype Pres (pH) Requirement pH Checked 1 In Control pH Adjusted Date/Time Adjusted Reagent UsedlComments A 250mLP+HNO3 [F] <2 Y N/ NA Y/ t N NA CD16621-07 Cant Type Pres (PH) JpH Checked / Requirement in Control pH Adjusted Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 [F] 1 2 1 Y N/ NA Y N J NA ff ttt ,L • i4��•� � it r Reaclent Name ID pH Strip ID: PH Strips COF055S Reagent Name ID 3 4 Rea.gent Name ID 5 6 C:kelmnt\PrinllwKU—riC5nTVOUn n,cOFIV.,t%!pt Page 22 of 22 WORK ORDER Printed: 10/19/2020 8:59:20AM CD16621 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase I Project Number: 1668421.107 PO #: Report To: Invoice To: Golder Associates, Inc. (G0007) City of Greensboro (CI034) Dusty Reedy Richard Lovett 5B Oak Branch Drive 401 Patton Ave Greensboro, NC 27407 Greensboro, NC 27406 Phone: (336) 852-4903 Phone :(336) 373-4188 Fax: (336) 852-4904 Fax: Received By: David E. Wilder Logged In By: Rachel Ann Yonish Date Received: 16-Oct-20 13:00 Date Logged In: 16-Oct-20 15:10 Work Order Comments: C-2236 received at 1.4°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Temperature Corrected Y Y 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: 19131339.102 Sampling Event Date: October 15, 2020 Review Date: November 25, 2020 Report #: CID 16621 4 GOLDER Initials: TM 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 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 RCRA Metals NC Appendix I + Detects NC Appendix II NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW TM COC was properly signed by all parties. TM Correct project name and number are on the form. Incorrect project number on COC. Should be 19131339.102 TM Sample receipt condition at laboratory was acceptable. TM Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES TM Holding times for extraction and/or analysis were met for each analytical GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 3 Method (see below for reference). 4 GOLDER Review Criteria Method Analytes 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 TM Laboratory analyzed at least one internal blank for each method, where applicable. TM Laboratory blank is interference -free. TM Surrogate recoveries are provided for each analytical method, where applicable. TM Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). TM MS/MSD/LCS data results are provided for each analytical method. TM MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). The 8260D Continuing Calibration Verification (CCV) exhibited a high bias for 1,2- Dibromoethane and Bromomethane; however, these analytes were not detected in the associated samples. The spike recovery for 1,1-Dichloroethene was outside control limits for the MSD sample, the precision between duplicate spikes of 1,1-Dichloroethene exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of this analyte. ➢ The spike recoveries for Arsenic and Chromium were outside control limits for the MS, MSD, and/or Post Digestion spike samples, the precision between duplicate spikes of Chromium exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these elements. 4.0 ANALYTE LISTS/METHODS TM The proper number of constituents are present for each analyte list as identified above (including detects where applicable). TM Proper EPA SW-846 analytical methods were used for analysis. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW G O L D E R Page 3 of 3 5.0 DATA REPORTING TM All analytical reporting associated with the event was performed by the contracted lab TM Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been `flagged' with a `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. TM It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 1 Ox 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: 1-1 and 1-3 (5x), 1-2 (2x) TM The report provides the reporting limit for each constituent. TM The results were reported at or below their proper reporting limits (i.e. at or below standards at MDLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. TM No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Interim Maximum Allowable Concentrations (IMACs) or surface water standards in wells or field/equipment/trip blanks or above applicable Surface Water Standards for surface water points ➢ Barium (NC 2L = 700 uq/L) • 1-4 @ 710 ug/L ➢ Benzene (NC 2L = 1 uq/L) • 1-1 @ 4.8 ug/L ➢ 1.4 Dioxane (NC 2L= 3 ua/L) • 1-1 @ 200 ug/L • 1-2 @ 120 ug/L 1-3 @ 200 ug/L 1-4 @ 39 ug/L ➢ 1,4-Dichlorobenzene (NC 2L = 6 uq/L) • 1-1 @ 6.6 ug/L TM No quantifiable inorganic or organic constituents were detected in a well or surface water point at concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). TM Other report issues/Communications with laboratory/etc.: ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Thursday, January 7, 2021 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.106, Project Name/Desc: White Street LF-Phase I,II ENCO Workorder(s): CD16622,CD17113 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory between Wednesday, October 14, 2020 and Friday, October 16, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, 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 36 PROJECT NARRATIVE Date: November 5, 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11 Lab ID: CD16622, CD17113 Overview (� �Eo www.encolabs.com This report is an amendment to the original report dated November 5 for this work order. This report was revised to remove an erroneous detection. Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples The 8260D LCS exhibited a high bias for Bromoform and Isobutyl alcohol; however, these analytes were not detected in the associated samples. The Continuing Calibration Verification (CCV) exhibited a high bias for Bromoform and Carbon tetrachloride; however, these analytes were not detected in the associated samples. The spike recovery for Trichloroethene was outside control limits for the MSD samples. The QC batch was approved based on acceptable LCS recovery of this analyte. The 8270E CCV exhibited a high bias for 2-Acetylaminofluorene; however, this analyte was not detected in the associated samples. The 8081 B spike recovery for 4,4'-DDT was outside control limits for the MS and MSD samples. The QC batch was approved based on acceptable LCS recovery of this analyte. The 8151 A precision between duplicate spikes of 2,4-D exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of this analyte. The spike recoveries for Antimony, Arsenic, Chromium, and Nickel were outside control limits for the MS, MSD, and/or Post Digestion spike samples, the precision between duplicate spikes of Chromium exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these elements. The spike recoveries for Cyanide and Sulfide were outside control limits for the MS and/or MSD samples. The QC batches were approved based on acceptable LCS recovery of these analytes. Quality Control Remarks No Comments Other Comments All samples received under this work order arrived in acceptable conditions. The samples were not checked for chlorine, as it is not required. The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of 36 (� �Eo www.encolabs.com 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 3 of 36 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-MW33 Lab ID: CD16622-01 Sampled: 10/13/20 10:34 Received: 10/14/20 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/11/21 10/20/20 15:35 10/22/20 11:17 EPA 6020E EPA 3005A 04/11/21 10/26/20 12:28 11/04/20 16:26 EPA 7470A EPA 7470A 11/10/20 10/21/20 16:21 10/23/20 14:30 EPA 8081E EPA 3510C 10/20/20 11/24/20 10/15/20 07:04 10/16/20 06:53 EPA 8082A EPA 3510C 10/13/21 11/24/20 10/15/20 06:43 10/17/20 09:15 EPA 8151A Same 2 10/20/20 11/24/20 10/15/20 13:28 10/19/20 16:54 EPA 8260D EPA 5030B_MIS 10/27/20 10/19/20 00:00 10/20/20 00:21 EPA 8260D EPA 503013_MS 10/27/20 10/21/20 18:48 10/23/20 04:21 EPA 8270E EPA 3510C—MS 10/20/20 11/28/20 10/19/20 07:16 10/22/20 19:37 EPA 9014 EPA 9010C 10/27/20 10/22/20 08:39 10/23/20 10:13 SM 4500S2 D-2011 NO PREP 10/20/20 10/20/20 14:41 10/20/20 15:00 Client ID: 4103-SWS Lab ID: CD17113-01 Sampled: 10/15/20 10:12 Received: 10/16/20 14:45 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/13/21 10/22/20 12:48 10/26/20 13:19 EPA 6020E EPA 3005A 04/13/21 11/02/20 13:41 11/05/20 03:50 EPA 8260D EPA 503013_MS 10/29/20 10/23/20 00:00 10/23/20 11:19 EPA 8260D EPA 503013_MS 10/29/20 10/26/20 09:28 10/27/20 21:54 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 36 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-MW33 Lab ID: CD16622-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 112 1.10 10.0 ug/L EPA 6010D Chromium - Total 2.51 J 1.40 10.0 ug/L EPA 6010D Copper - Total 3.46 J 1.60 10.0 ug/L EPA 6010D Vanadium - Total 3.56 J 1.40 10.0 ug/L EPA 6010D Client ID: 4103-SWS Lab ID: CD17113-01 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.0 J 0.80 2.0 ug/L EPA 8260D Barium - Total 52.9 1.10 10.0 ug/L EPA 6010D Chromium - Total 2.22 J 1.40 10.0 ug/L EPA 6010D Copper - Total 4.21 J 1.60 10.0 ug/L EPA 6010D Zinc - Total 11.7 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 Pager) Of 36 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CD16622-01 Received: 10/14/20 14:00 Matrix: Ground Water Sampled:10/13/20 10:34 Work Order: CD16622 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,1-Dichloropropene [563-58-6]^ 0.15 U ug/L 1 0.15 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,2,4-Trichlorobenzene [120-82-1]^ 0.14 U ug/L 1 0.14 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,3-Dichlorobenzene [541-73-1]^ 0.15 U ug/L 1 0.15 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,3-Dichloropropane [142-28-9]^ 0.16 U ug/L 1 0.16 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 2,2-Dichloropropane [594-20-7]^ 0.28 U ug/L 1 0.28 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 0121050 EPA 8260D 10/23/20 04:21 REF 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 0121050 EPA 8260D 10/23/20 04:21 REF 3-Chloropropene[107-05-1]A 0.11 U ug/L 1 0.11 1.0 0121050 EPA 8260D 10/23/20 04:21 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 0121050 EPA 8260D 10/23/20 04:21 REF Acetone [67-64-1]A 10 U ug/L 1 10 20 0121050 EPA 8260D 10/23/20 04:21 REF Acetonitrile [75-05-8]A 5.0 U ug/L 1 5.0 10 0121050 EPA 8260D 10/23/20 04:21 REF Acrolein [107-02-8]A 4.0 U ug/L 1 4.0 10 0121050 EPA 8260D 10/23/20 04:21 REF Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 0121050 EPA 8260D 10/23/20 04:21 REF Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Carbon disulfide [75-15-0]^ 1.5 U ug/L 1 1.5 5.0 0121050 EPA 8260D 10/23/20 04:21 REF Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Chlorobenzene[108-90-7]A 0.17 U ug/L 1 0.17 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Chloroprene [126-99-8]A 0.64 U ug/L 1 0.64 1.0 0121050 EPA 8260D 10/23/20 04:21 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 0121050 EPA 8260D 10/23/20 04:21 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Dichlorodifluoromethane [75-71-8]A 0.20 U ug/L 1 0.20 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Ethyl Methacrylate [97-63-2]^ 0.38 U ug/L 1 0.38 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Ethylbenzene[100-41-4]A 0.13 U ug/L 1 0.13 1.0 0121050 EPA 8260D 10/23/20 04:21 REF Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 0121050 EPA 8260D 10/23/20 04:21 REF Isobutyl alcohol [78-83-1]^ 11 U ug/L 1 11 50 0121050 EPA 8260D 10/23/20 04:21 REF QL-02 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 6 Of 36 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CD16622-01 Received: 10/14/20 14:00 Matrix: Ground Water Sampled:10/13/20 10:34 Work Order: CD16622 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Methacrylonitrile [126-98-7]^ 4.9 U ug/L 1 4.9 10 OJ21050 EPA 8260D 10/23/20 04:21 REF Methyl Methacrylate [80-62-6]^ 0.51 U ug/L 1 0.51 1.0 OJ21050 EPA 8260D 10/23/20 04:21 REF Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 OJ21050 EPA 8260D 10/23/20 04:21 REF Naphthalene [91-20-3]^ 0.11 U ug/L 1 0.11 1.0 OJ21050 EPA 8260D 10/23/20 04:21 REF Propionitrile [107-12-O]^ 5.0 U ug/L 1 5.0 10 OJ21050 EPA 8260D 10/23/20 04:21 REF Styrene [100-42-5]^ 0.11 U ug/L 1 0.11 1.0 OJ21050 EPA 8260D 10/23/20 04:21 REF Tetrachloroethene [127-18-4]^ 0.17 U ug/L 1 0.17 1.0 OJ21050 EPA 8260D 10/23/20 04:21 REF Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 OJ21050 EPA 8260D 10/23/20 04:21 REF Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OJ21050 EPA 8260D 10/23/20 04:21 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OJ21050 EPA 8260D 10/23/20 04:21 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OJ21050 EPA 8260D 10/23/20 04:21 REF trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 OJ21050 EPA 8260D 10/23/20 04:21 REF Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OJ21050 EPA 8260D 10/23/20 04:21 REF Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OJ21050 EPA 8260D 10/23/20 04:21 REF Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 OJ21050 EPA 8260D 10/23/20 04:21 REF Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OJ21050 EPA 8260D 10/23/20 04:21 REF Xylenes(Total)[1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OJ21050 EPA 8260D 10/23/20 04:21 REF Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 44 1 50.0 89 % 53-136 OJ21050 EPA 826OD 10123120 04:21 REF Dibromofluoromethane 51 1 50.0 103 % 67-129 OJ21050 EPA 826OD 10123120 04:21 REF Toluene-d8 50 1 50.0 100 % 59-134 OJ21050 EPA 626OD 10123120 04:21 REF Semivolatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL PQL Batch Method Analyzed Ay Notes 1,2,4,5-Tetrachlorobenzene [95-94-3]^ 3.4 u ug/L 1 3.4 10 OJ19001 EPA 8270E 1O/22/20 19:37 DFM 1,3,5-Trinitrobenzene [99-35-4]^ 3.0 u ug/L 1 3.0 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 1,3-Dinitrobenzene [99-65-O]^ 2.5 u ug/L 1 2.5 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 1,4-Naphthoquinone [130-15-4]^ 2.5 u ug/L 1 2.5 10 OJ19001 EPA 8270E 1O/22/20 19:37 DFM 1,4-Phenylenediamine [106-50-3]^ 4.0 u ug/L 1 4.0 10 OJ19001 EPA 8270E 1O/22/20 19:37 DFM 1-Naphthylamine [134-32-7]^ 2.2 u ug/L 1 2.2 10 OJ19001 EPA 8270E 1O/22/20 19:37 DFM 2,3,4,6-Tetrachlorophenol[58-90-2]^ 2.4 u ug/L 1 2.4 10 OJ19001 EPA 8270E 1O/22/20 19:37 DFM 2,4,5-Trichlorophenol[95-95-4]^ 2.5 u ug/L 1 2.5 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 2,4,6-Trichlorophenol[88-06-2]^ 2.6 u ug/L 1 2.6 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 2,4-Dichlorophenol[120-83-2]^ 2.6 u ug/L 1 2.6 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 2,4-Di methyl phenol[105-67-9]^ 2.3 u ug/L 1 2.3 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 2,4-Dinitrophenol[51-28-5]^ 2.6 u ug/L 1 2.6 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 2,4-Dinitrotoluene [121-14-2]^ 2.6 u ug/L 1 2.6 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 2,6-Dichlorophenol[87-65-O]^ 2.0 u ug/L 1 2.0 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 2,6-Dinitrotoluene [606-20-2]^ 2.5 u ug/L 1 2.5 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 2-Acetylaminofluorene [53-96-3]^ 3.1 u ug/L 1 3.1 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM QV-01 2-Chloronaphthalene [91-58-7]^ 2.8 u ug/L 1 2.8 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 2-Chlorophenol[95-57-8]^ 2.2 u ug/L 1 2.2 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 2-Methyl-4,6-dinitrophenol[534-52-1]^ 3.3 u ug/L 1 3.3 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 2- Methyl naphthalene [91-57-6]^ 2.8 u ug/L 1 2.8 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 2-Methylphenol[95-48-7]^ 2.0 u ug/L 1 2.0 10 OJ19001 EPA 8270E 1O/22/20 19:37 DFM FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 of 36 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CD16622-01 Received: 10/14/20 14:00 Matrix: Ground Water Sampled:10/13/20 10:34 Work Order: CD16622 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Semivolatile 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 2-Naphthylamine [91-59-8]A 3.0 U ug/L 1 3.0 10 O119001 EPA 8270E 10/22/20 19:37 DFM 2-Nitroaniline [88-74-4]A 2.5 U ug/L 1 2.5 10 O119001 EPA 8270E 10/22/20 19:37 DFM 2-Nitrophenol[88-75-5]A 1.1 U ug/L 1 1.1 10 O119001 EPA 8270E 10/22/20 19:37 DFM 3 & 4-Methylphenol [108-39-4/106-44-5] A 2.1 U ug/L 1 2.1 10 O119001 EPA 8270E 10/22/20 19:37 DFM 3,3'-Dichlorobenzidine [91-94-1]A 3.5 U ug/L 1 3.5 10 O119001 EPA 8270E 10/22/20 19:37 DFM 3,3'-Dimethylbenzidine [119-93-7]A 2.2 U ug/L 1 2.2 10 O119001 EPA 8270E 10/22/20 19:37 DFM 3-Methylcholanthrene [56-49-5]A 1.3 U ug/L 1 1.3 10 O119001 EPA 8270E 10/22/20 19:37 DFM 3-Nitroaniline [99-09-2]A 2.6 U ug/L 1 2.6 10 O119001 EPA 8270E 10/22/20 19:37 DFM 4-Aminobiphenyl[92-67-1]A 3.5 U ug/L 1 3.5 10 O119001 EPA 8270E 10/22/20 19:37 DFM 4-Bromophenyl-phenylether[101-55-3]A 2.4 U ug/L 1 2.4 10 O119001 EPA 8270E 10/22/20 19:37 DFM 4-Chloro-3-methylphenol[59-50-7]A 2.4 U ug/L 1 2.4 10 O119001 EPA 8270E 10/22/20 19:37 DFM 4-Chloroaniline [106-47-8]A 2.0 U ug/L 1 2.0 10 O119001 EPA 8270E 10/22/20 19:37 DFM 4-Chlorophenyl-phenylether[7005-72-3]A 2.6 U ug/L 1 2.6 10 O119001 EPA 8270E 10/22/20 19:37 DFM 4-Nitroaniline [100-01-6]A 3.2 U ug/L 1 3.2 10 O119001 EPA 8270E 10/22/20 19:37 DFM 4-Nitrophenol[100-02-7]A 2.8 U ug/L 1 2.8 10 O119001 EPA 8270E 10/22/20 19:37 DFM 5-Nitro-o-toluidine [99-55-8]A 3.2 U ug/L 1 3.2 10 O119001 EPA 8270E 10/22/20 19:37 DFM 7,12-Dimethylbenz(a)anthracene 1.4 U ug/L 1 1.4 10 O119001 EPA 8270E 10/22/20 19:37 DFM [57-97-6]A a,a-Dimethylphenethylamine [122-09-8]A 3.5 U ug/L 1 3.5 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Acenaphthene [83-32-9]A 2.7 U ug/L 1 2.7 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Acenaphthylene [208-96-8]A 2.6 U ug/L 1 2.6 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Acetophenone [98-86-2]A 2.0 U ug/L 1 2.0 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Anthracene [120-12-7]A 2.4 U ug/L 1 2.4 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Benzo(a)anthracene [56-55-3]A 2.4 U ug/L 1 2.4 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Benzo(a)pyrene [50-32-8]A 2.2 U ug/L 1 2.2 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Benzo(b)fluoranthene [205-99-2]A 2.8 U ug/L 1 2.8 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Benzo(g,h,i)perylene [191-24-2]A 2.4 U ug/L 1 2.4 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Benzo(k)fluoranthene [207-08-9]A 2.4 U ug/L 1 2.4 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Benzyl alcohol [100-51-6]A 2.4 U ug/L 1 2.4 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Bis(2-chloroethoxy)methane [111-91-1]A 2.4 U ug/L 1 2.4 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Bis(2-chloroethyl)ether [111-44-4]A 2.6 U ug/L 1 2.6 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Bis(2-chloroisopropyl)ether [108-60-1]A 2.5 U ug/L 1 2.5 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Bis(2-ethylhexyl)phthalate [117-81-7]A 1.9 U ug/L 1 1.9 5.0 OJ19001 EPA 8270E 10/22/20 19:37 DFM Butylbenzylphthalate [85-68-7]A 3.8 U ug/L 1 3.8 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Chlorobenzilate [510-15-6]A 2.4 U ug/L 1 2.4 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Chrysene [218-01-9]A 2.2 U ug/L 1 2.2 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Diallate [2303-16-4]A 1.9 U ug/L 1 1.9 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Dibenzo(a,h)anthracene [53-70-3]A 2.3 U ug/L 1 2.3 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Dibenzofuran [132-64-9]A 2.6 U ug/L 1 2.6 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Diethylphthalate [84-66-2]A 2.4 U ug/L 1 2.4 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Dimethoate [60-51-5]A 2.3 U ug/L 1 2.3 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Dimethylphthalate [131-11-3]A 2.5 U ug/L 1 2.5 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Di-n-butylphthalate [84-74-2]A 2.8 U ug/L 1 2.8 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Di-n-octylphthalate [117-84-O]A 3.1 U ug/L 1 3.1 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Disulfoton [298-04-4]A 2.0 U ug/L 1 2.0 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Ethyl methanesulfonate [62-50-O]A 2.2 U ug/L 1 2.2 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM Famphur[52-85-7]A 2.7 U ug/L 1 2.7 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 36 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CD16622-01 Received: 10/14/20 14:00 Matrix: Ground Water Sampled:10/13/20 10:34 Work Order: CD16622 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Semivolatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed By Notes Fluoranthene [206-44-O]A 3.1 U ug/L 1 3.1 10 0119001 EPA 8270E 10/22/20 19:37 DFM Fluorene [86-73-7]A 2.5 U ug/L 1 2.5 10 0119001 EPA 8270E 10/22/20 19:37 DFM Hexachlorobenzene[118-74-1]A 2.3 U ug/L 1 2.3 10 0119001 EPA 8270E 10/22/20 19:37 DFM Hexachlorobutadiene [87-68-3]A 2.8 U ug/L 1 2.8 10 0119001 EPA 8270E 10/22/20 19:37 DFM Hexachlorocyclopentadiene [77-47-4]A 2.7 U ug/L 1 2.7 10 0119001 EPA 8270E 10/22/20 19:37 DFM Hexachloroethane [67-72-1]A 2.6 U ug/L 1 2.6 10 0119001 EPA 8270E 10/22/20 19:37 DFM Hexachloropropene[1888-71-7]A 6.8 U ug/L 1 6.8 10 0119001 EPA 8270E 10/22/20 19:37 DFM Indeno(1,2,3-cd)pyrene [193-39-5]A 2.2 U ug/L 1 2.2 10 0119001 EPA 8270E 10/22/20 19:37 DFM Isodrin [465-73-6]A 1.5 U ug/L 1 1.5 10 0119001 EPA 8270E 10/22/20 19:37 DFM Isophorone[78-59-1]A 2.5 U ug/L 1 2.5 10 0119001 EPA 8270E 10/22/20 19:37 DFM Isosafrole [120-58-1]A 2.2 U ug/L 1 2.2 10 0119001 EPA 8270E 10/22/20 19:37 DFM Kepone[143-50-O]A 7.2 U ug/L 1 7.2 20 0119001 EPA 8270E 10/22/20 19:37 DFM Methapyrilene [91-80-5]A 4.8 U ug/L 1 4.8 10 0119001 EPA 8270E 10/22/20 19:37 DFM Methyl Methanesulfonate [66-27-3]A 2.2 U ug/L 1 2.2 10 0119001 EPA 8270E 10/22/20 19:37 DFM Methyl parathion [298-00-O]A 2.5 U ug/L 1 2.5 10 0119001 EPA 8270E 10/22/20 19:37 DFM Nitrobenzene [98-95-3]A 2.5 U ug/L 1 2.5 10 0119001 EPA 8270E 10/22/20 19:37 DFM N-Nitrosodiethylamine [55-18-5]A 2.1 U ug/L 1 2.1 10 0119001 EPA 8270E 10/22/20 19:37 DFM N-Nitrosodimethylamine [62-75-9]A 1.9 U ug/L 1 1.9 10 0119001 EPA 8270E 10/22/20 19:37 DFM N-Nitrosodi-n-butylamine [924-16-3]A 2.0 U ug/L 1 2.0 10 0119001 EPA 8270E 10/22/20 19:37 DFM N-Nitroso-di-n-propylamine [621-64-7]A 2.3 U ug/L 1 2.3 10 0119001 EPA 8270E 10/22/20 19:37 DFM N-nitrosodiphenylamine/Diphenylamine 2.5 U ug/L 1 2.5 10 0119001 EPA 8270E 10/22/20 19:37 DFM [86-30-6/122-39-4]A N-Nitrosomethylethylamine [10595-95-6]A 1.9 U ug/L 1 1.9 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM N-Nitrosopiperidine [100-75-4]A 2.1 U ug/L 1 2.1 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM N-Nitrosopyrrolidine [930-55-2]A 1.9 U ug/L 1 1.9 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM 0,0,0-Triethylphosphorothioate 2.2 U ug/L 1 2.2 10 OJ19001 EPA 8270E 10/22/20 19:37 DFM [126-68-1]A o-Toluidine [95-53-4]A 1.6 U ug/L 1 1.6 10 0319001 EPA 8270E 10/22/20 19:37 DFM Parathion [56-38-2]A 1.7 U ug/L 1 1.7 10 0319001 EPA 8270E 10/22/20 19:37 DFM p-Dimethylaminoazobenzene [60-11-7]A 2.6 U ug/L 1 2.6 10 0319001 EPA 8270E 10/22/20 19:37 DFM Pentachlorobenzene [608-93-5]A 2.7 U ug/L 1 2.7 10 0319001 EPA 8270E 10/22/20 19:37 DFM Pentachloronitrobenzene [82-68-8]A 1.9 U ug/L 1 1.9 10 0319001 EPA 8270E 10/22/20 19:37 DFM Phenacetin [62-44-2]A 2.7 U ug/L 1 2.7 10 0319001 EPA 8270E 10/22/20 19:37 DFM Phenanthrene [85-01-8]A 2.6 U ug/L 1 2.6 10 0319001 EPA 8270E 10/22/20 19:37 DFM Phenol[108-95-2]A 1.7 U ug/L 1 1.7 10 0319001 EPA 8270E 10/22/20 19:37 DFM Phorate [298-02-2]A 2.1 U ug/L 1 2.1 10 0319001 EPA 8270E 10/22/20 19:37 DFM Pronamide [23950-58-5]A 1.7 U ug/L 1 1.7 10 0319001 EPA 8270E 10/22/20 19:37 DFM Pyrene [129-00-O]A 3.5 U ug/L 1 3.5 10 0119001 EPA 8270E 10/22/20 19:37 DFM Safrole [94-59-7]A 2.2 U ug/L 1 2.2 10 0319001 EPA 8270E 10/22/20 19:37 DFM Thionazin [297-97-2]A 2.3 U ug/L 1 2.3 10 0319001 EPA 8270E 10/22/20 19:37 DFM Surrogates Resu/ts DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed fiy Notes 2,4,6-Tribromophenol 64 1 100 64 % 10-179 OW9001 EPA 8270E 10122120 1937 DFM 2-Fluorobiphenyl 46 1 50.0 91 % 10-149 OW9001 EPA 8270E 101221201937 DFM 2-Fluorophenol 52 1 100 52 % 10-110 OW9001 EPA 8270E 10122120 1937 DFM Nitrobenzene-d5 36 1 50.0 71 % 10-149 OW9001 EPA 8270E 101221201937 DFM Phenol-d5 41 1 100 41 % 10-88 OW9001 EPA 8270E 10122120 1937 DFM Terphenyl-d14 37 1 50.0 74 % 10-188 OW9001 EPA 8270E 101221201937 DFM FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 Of 36 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CD16622-01 Received: 10/14/20 14:00 Matrix: Ground Water Sampled:10/13/20 10:34 Work Order: CD16622 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Organochlorine Pesticides by GC ^ - ENCO Cary rertified analyte [NC 591] Analvte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 4,4'-DDD [72-54-8]^ 0.044 U ug/L 1 0.044 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK 4,4'-DDE [72-55-9]^ 0.048 U ug/L 1 0.048 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK 4,4'-DDT [50-29-3]A 0.049 U ug/L 1 0.049 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK Aldrin [309-00-2]^ 0.041 U ug/L 1 0.041 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK alpha-BHC [319-84-6]^ 0.036 U ug/L 1 0.036 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK beta-BHC [319-85-7]^ 0.041 U ug/L 1 0.041 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK Chlordane (tech) [12789-03-6]^ 0.37 U ug/L 1 0.37 0.50 0114029 EPA 8081E 10/16/20 06:53 LSK Chlordane -alpha [5103-71-9]^ 0.048 U ug/L 1 0.048 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK Chlordane -gamma [5103-74-2]^ 0.042 U ug/L 1 0.042 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK delta-BHC [319-86-8]^ 0.048 U ug/L 1 0.048 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK Dieldrin [60-57-1]A 0.045 U ug/L 1 0.045 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK EndosulfanI[959-98-8]^ 0.045 U ug/L 1 0.045 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK Endosulfan II[33213-65-9]^ 0.038 U ug/L 1 0.038 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK Endosulfan sulfate [1031-07-8]^ 0.032 U ug/L 1 0.032 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK Endrin [72-20-8]A 0.041 U ug/L 1 0.041 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK Endrin aldehyde [7421-93-4]^ 0.049 U ug/L 1 0.049 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK gamma-BHC [58-89-9]A 0.034 U ug/L 1 0.034 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK Heptachlor[76-44-8]A 0.047 U ug/L 1 0.047 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK Heptachlor epoxide [1024-57-3]^ 0.037 U ug/L 1 0.037 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK Methoxychlor[72-43-5]^ 0.048 U ug/L 1 0.048 0.050 0114029 EPA 8081E 10/16/20 06:53 LSK Toxaphene [8001-35-2]^ 0.28 U ug/L 1 0.28 1.0 0114029 EPA 8081E 10/16/20 06:53 LSK Surrogates Results DF Spike L v/ % Rec % Rec Limits Batch Method Analyzed By Notes 2,4,5,E-TCMX 0.63 1 1,00 63 % 10-139 0JI4029 EPA 8081B 10116120 06:53 L5K Decachlorobiphenyl 1.2 1 1,00 120 % 10-122 0JI4029 EPA 8081B 10116120 06:53 L5K Polychlorinated Biphenyls by GC ^ - ENCO Cary certified analyte [NC 591] Analvte rCAS Numberl Results Flaa Units DF MDL I•Q Batch Method Analyzed Iy Notes PCB-1016/1242 [12674-11-2/53469-21-9]^ 0.48 u ug/L 1 0.48 0.50 0315002 EPA 8082A 10/17/20 09:15 LSK PCB-1221 [11104-28-2]^ 0.43 u ug/L 1 0.43 0.50 0315002 EPA 8082A 10/17/20 09:15 LSK PCB-1232 [11141-16-5]^ 0.50 u ug/L 1 0.50 0.50 0315002 EPA 8082A 10/17/20 09:15 LSK PCB-1248 [12672-29-6]^ 0.45 u ug/L 1 0.45 0.50 0315002 EPA 8082A 10/17/20 09:15 LSK PCB-1254 [11097-69-1]^ 0.43 u ug/L 1 0.43 0.50 0315002 EPA 8082A 10/17/20 09:15 LSK PCB-1260 [11096-82-5]^ 0.47 u ug/L 1 0.47 0.50 0315002 EPA 8082A 10/17/20 09:15 LSK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffy Notes 2, 4,5, 6-TCMX 0.85 1 1.00 85 % 10-128 0J15002 EPA 80824 10117120 09;15 LSK Decachlorobiphenyl 1.3 1 1.00 129 % 10-129 0J15002 EPA 80824 10117120 09;15 LSK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 Of 36 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CD16622-01 Received: 10/14/20 14:00 Matrix: Ground Water Sampled:10/13/20 10:34 Work Order: CD16622 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 OJ21042 EPA 7470A 10/23/20 14:30 KAH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Antimony [7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OJ26024 EPA 6020B 11/04/20 16:26 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OJ20025 EPA 6010D 10/22/20 11:17 JDH Barium [7440-39-3]^ 112 ug/L 1 1.10 10.0 0320025 EPA 6010D 10/22/20 11:17 JDH Beryllium [7440-41-7]1 0.160 U ug/L 1 0.160 1.00 OJ20025 EPA 6010D 10/22/20 11:17 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OJ20025 EPA 6010D 10/22/20 11:17 JDH Chromium [7440-47-3]^ 2.51 J ug/L 1 1.40 10.0 0320025 EPA 6010D 10/22/20 11:17 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OJ20025 EPA 6010D 10/22/20 11:17 JDH Copper[7440-50-S]^ 3.46 J ug/L 1 1.60 10.0 0320025 EPA 6010D 10/22/20 11:17 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OJ20025 EPA 6010D 10/22/20 11:17 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OJ20025 EPA 6010D 10/22/20 11:17 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OJ20025 EPA 6010D 10/22/20 11:17 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OJ20025 EPA 6010D 10/22/20 11:17 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 OJ26024 EPA 6020B 11/04/20 16:26 RLF Tin [7440-31-5]^ 2.90 U ug/L 1 2.90 10.0 OJ20025 EPA 6010D 10/22/20 11:17 JDH Vanadium [7440-62-2]^ 3.56 J ug/L 1 1.40 10.0 0320025 EPA 6010D 10/22/20 11:17 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OJ20025 EPA 6010D 10/22/20 11:17 JDH Classical Chemistry Parameters ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Cyanide (total)[57-12-5]^ 4.9 U ug/L 1 4.9 10 OJ21029 EPA 9014 10/23/20 10:13 JAH Sulfide [18496-25-8]^ 10 U ug/L 1 10 100 OJ20015 iM 450OS2 D-2011 10/20/20 15:00 JOC Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OJ19034 EPA 8260D 10/20/20 00:21 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes Toluene-c48 5.2 1 5.00 104 % 75-125 0J19034 EPA 8260D 10120120 00:21 KKW Chlorinated Herbicides by GC ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL POLL Batch Method Analyzed Ay Notes 2,4,5-T [93-76-5]^ 0.28 U ug/L 1 0.28 0.50 OJ14067 EPA 8151A 10/19/20 16:54 `CV 2,4,5-TP (Silvex) [93-72-1]^ 0.44 U ug/L 1 0.44 0.50 OJ14067 EPA 8151A 10/19/20 16:54 `CV 2,4-D [94-75-7]^ 0.27 U ug/L 1 0.27 0.50 OJ14067 EPA 8151A 10/19/20 16:54 `CV Dinoseb [88-85-7]^ 0.32 U ug/L 1 0.32 0.50 OJ14067 EPA 8151A 10/19/20 16:54 `CV Pentachlorophenol[87-86-5]^ 0.19 U ug/L 1 0.19 0.50 OJ14067 EPA 8151A 10/19/20 16:54 `CV Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes 2,4-DC4A 2.6 1 2.00 131 % 37-134 0J14067 EPA 8151A 1011912016:54 FCV FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 of 36 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SW5 Lab Sample ID:CD17113-01 Received: 10/16/20 14:45 Matrix: Surface Water Sampled:10/15/20 10:12 Work Order: CD17113 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 O126036 EPA 8260D 10/27/20 21:54 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 O126036 EPA 8260D 10/27/20 21:54 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 O126036 EPA 8260D 10/27/20 21:54 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 O126036 EPA 8260D 10/27/20 21:54 REF 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 O126036 EPA 8260D 10/27/20 21:54 REF 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 O126036 EPA 8260D 10/27/20 21:54 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 O126036 EPA 8260D 10/27/20 21:54 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 O126036 EPA 8260D 10/27/20 21:54 REF 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 O126036 EPA 8260D 10/27/20 21:54 REF 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 O126036 EPA 8260D 10/27/20 21:54 REF 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 O126036 EPA 8260D 10/27/20 21:54 REF 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 O126036 EPA 8260D 10/27/20 21:54 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 O126036 EPA 8260D 10/27/20 21:54 REF 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 O126036 EPA 8260D 10/27/20 21:54 REF 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 O126036 EPA 8260D 10/27/20 21:54 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 O126036 EPA 8260D 10/27/20 21:54 REF Acetone [67-64-1]A 10 U ug/L 1 10 20 O126036 EPA 8260D 10/27/20 21:54 REF Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 O126036 EPA 8260D 10/27/20 21:54 REF Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 O126036 EPA 8260D 10/27/20 21:54 REF Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 O126036 EPA 8260D 10/27/20 21:54 REF Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 O126036 EPA 8260D 10/27/20 21:54 REF Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 O126036 EPA 8260D 10/27/20 21:54 REF QL-02, QV-01 Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Carbon disulfide [75-15-O]^ 1.5 U ug/L 1 1.5 5.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF QV-01 Chlorobenzene [108-90-7]^ 0.17 U ug/L 1 0.17 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Chloroethane [75-00-3]^ 0.23 U ug/L 1 0.23 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF cis-1,3-Dichloropropene [10061-01-5]^ 0.20 U ug/L 1 0.20 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Ethylbenzene [100-41-4]^ 0.13 U ug/L 1 0.13 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Styrene [100-42-5]^ 0.11 U ug/L 1 0.11 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Tetrachloroethene [127-18-4]^ 0.17 U ug/L 1 0.17 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OJ26036 EPA 8260D 10/27/20 21:54 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 Of 36 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SW5 Lab Sample ID:CD17113-01 Received: 10/16/20 14:45 Matrix: Surface Water Sampled:10/15/20 10:12 Work Order: CD17113 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OJ26036 EPA 8260D 10/27/20 21:54 REF Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 44 1 50.0 88 % 53-136 OJ26036 EPA 626OD 10127120 21:54 REF Dibromofluoromethane 50 1 50.0 101 % 67-129 OJ26036 EPA 626OD 10127120 21:54 REF Toluene-d8 51 1 50.0 103 % 59-134 OJ26036 EPA 626OD 10127120 21:54 REF Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL P L Batch Method Analyzed Ay Notes Antimony[7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 OK02037 EPA 6020B 11/05/20 03:50 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OJ22021 EPA 6010D 10/26/20 13:19 JDH Barium [7440-39-3]^ 52.9 ug/L 1 1.10 10.0 O122021 EPA 6010D 10/26/20 13:19 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OJ22021 EPA 6010D 10/26/20 13:19 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OJ22021 EPA 6010D 10/26/20 13:19 JDH Chromium [7440-47-3]^ 2.22 J ug/L 1 1.40 10.0 O122021 EPA 6010D 10/26/20 13:19 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OJ22021 EPA 6010D 1O/26/20 13:19 JDH Copper[7440-50-8]^ 4.21 J ug/L 1 1.60 10.0 O122021 EPA 6010D 10/26/20 13:19 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OJ22021 EPA 6010D 10/26/20 13:19 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OJ22021 EPA 6010D 1O/26/20 13:19 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OJ22021 EPA 6010D 10/26/20 13:19 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OJ22021 EPA 6010D 10/26/20 13:19 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OK02037 EPA 6020B 11/05/20 03:50 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OJ22021 EPA 6010D 10/26/20 13:19 JDH Zinc [7440-66-6]^ 11.7 ug/L 1 4.40 10.0 O122021 EPA 6010D 10/26/20 13:19 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]A 1.0 J ug/L 1 0.80 2.0 O123037 EPA 8260D 10/23/20 11:19 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.1 1 5.00 101 % 75-125 OJ23037 EPA 826OD 10123120 11:19 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OJ21050 - EPA 5030B MS Blank (0321050-BLK1) Prepared: 10/21/2020 18:48 Analyzed: 10/22/2020 23:43 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 1,1-Dichloropropene 0.15 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2,4-Trichlorobenzene 0.14 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 1,3-Dichlorobenzene 0.15 U 1.0 ug/L 1,3-Dichloropropane 0.16 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2,2-Dichloropropane 0.28 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 3-Chloropropene 0.11 U 1.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acetonitrile 5.0 U 10 ug/L Acrolein 4.0 U 10 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 Chloroprene 0.64 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 Dichlorodifluoromethane 0.20 U 1.0 ug/L Ethyl Methacrylate 0.38 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Isobutyl alcohol 11 U 50 ug/L Methacrylonitrile 4.9 U 10 ug/L Methyl Methacrylate 0.51 U 1.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 Of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OJ21050 - EPA 5030B MS - Continued Blank (0321050-BLK1) Continued Prepared: 10/21/2020 18:48 Analyzed: 10/22/2020 23:43 Analvte Result Flaq POL Units Methylene chloride 0.23 U 1.0 ug/L Naphthalene 0.11 U 1.0 ug/L Propionitrile 5.0 U 10 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Tetrahydrofuran 0.53 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes 4-Bromofluorobenzene 45 u91L 50.0 90 53-136 Dibromofluoromethane 46 u91L 50.0 97 67-129 Toluene-d8 49 u91L 50.0 98 59-134 LCS (0323050-BSI) Prepared: 10/21/2020 18:48 Analyzed: 10/22/2020 21:52 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 103 75-133 Benzene 20 1.0 ug/L 20.0 100 80-134 Chlorobenzene 19 1.0 ug/L 20.0 96 80-120 Toluene 19 1.0 ug/L 20.0 94 71-120 Trichloroethene 20 1.0 ug/L 20.0 100 74-120 Matrix Spike (0723050-MS1) Prepared: 10/21/2020 18:48 Analyzed: 10/22/2020 22:20 Source: CD16285-06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 25 1.0 ug/L 20.0 1.8 118 75-133 Benzene 22 1.0 ug/L 20.0 0.15 U 109 80-134 Chlorobenzene 21 1.0 ug/L 20.0 0.17 U 104 80-120 Toluene 20 1.0 ug/L 20.0 0.14 U 102 71-120 Trichloroethene 23 1.0 ug/L 20.0 0.15 U 117 74-120 Matrix Spike Dup (0323050-MSD1) Prepared: 10/21/2020 18:48 Analyzed: 10/22/2020 22:48 Source: CD16285-06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 27 1.0 ug/L 20.0 1.8 127 75-133 7 20 Benzene 23 1.0 ug/L 20.0 0.15 U 113 80-134 4 17 Chlorobenzene 22 1.0 ug/L 20.0 0.17 U 109 80-120 4 16 Toluene 20 1.0 ug/L 20.0 0.14 U 102 71-120 0.4 17 Trichloroethene 24 1.0 ug/L 20.0 0.15 U 122 74-120 4 22 QM-07 Batch OJ26036 - EPA 5030B MS FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 15 Of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OJ26036 - EPA 5030B MS - Continued Blank (0326036-BLK1) Prepared: 10/26/2020 16:56 Analyzed: 10/27/2020 13:29 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 43 u9/L 50.0 87 53-136 Dibromofluoromethane 47 u9/L 50.0 94 67-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 16 of 36 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OJ26036 - EPA 5030B MS - Continued (� �Eo www.encolabs.com Blank (0326036-BLK1) Continued Prepared: 10/26/2020 16:56 Analyzed: 10/27/2020 13:29 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 50 u91L 50.0 99 59-134 LCS (0726036-BS1) Prepared: 10/26/2020 16:56 Analyzed: 10/27/2020 11:37 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 20 1.0 ug/L 20.0 102 75-133 Benzene 21 1.0 ug/L 20.0 106 80-134 Chlorobenzene 20 1.0 ug/L 20.0 101 80-120 Toluene 19 1.0 ug/L 20.0 96 71-120 Trichloroethene 24 1.0 ug/L 20.0 119 74-120 Matrix Spike (0326036-MS1) Prepared: 10/26/2020 16:56 Analyzed: 10/27/2020 12:05 Source: CD17165-08 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 20 1.0 ug/L 20.0 0.15 U 99 80-134 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 98 80-120 Toluene 18 1.0 ug/L 20.0 0.14 U 92 71-120 Trichloroethene 22 1.0 ug/L 20.0 0.15 U 110 74-120 Matrix Spike Dup (0]26036-MSD1) Prepared: 10/26/2020 16:56 Analyzed: 10/27/2020 12:33 Source: CD17165-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 20 1.0 ug/L 20.0 0.21 U 98 75-133 0.7 20 Benzene 19 1.0 ug/L 20.0 0.15 U 96 80-134 4 17 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 97 80-120 0.8 16 Toluene 18 1.0 ug/L 20.0 0.14 U 92 71-120 0 17 Trichloroethene 22 1.0 ug/L 20.0 0.15 U 112 74-120 2 22 Semivolatile Organic Compounds by GCMS - Quality Control Batch 0119001 - EPA 3510C MS Blank (0319001-BLK1) Prepared: 10/19/2020 07:16 Analyzed: 10/22/2020 13:52 Analvte Result Flaq POL Units 1,2,4,5-Tetrachlorobenzene 3.4 U 10 ug/L 1,3,5-Trinitrobenzene 3.0 U 10 ug/L 1,3-Dinitrobenzene 2.5 U 10 ug/L 1,4-Naphthoquinone 2.5 U 10 ug/L 1,4-Phenylenediamine 4.0 U 10 ug/L 1-Naphthylamine 2.2 U 10 ug/L 2,3,4,6-Tetrachlorophenol 2.4 U 10 ug/L 2,4,5-Trichlorophenol 2.5 U 10 ug/L 2,4,6-Trichlorophenol 2.6 U 10 ug/L 2,4-Dichlorophenol 2.6 U 10 ug/L 2,4-Di methyl phenol 2.3 U 10 ug/L 2,4-Dinitrophenol 2.6 U 10 ug/L Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 17 Of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Semivolatile Organic Compounds by GCMS - Quality Control Batch 0119001 - EPA 3510C MS - Continued Blank (0319001-BLK1) Continued Prepared: 10/19/2020 07:16 Analyzed: 10/22/2020 13:52 Analvte Result Flaq POL Units 2,4-Dinitrotoluene 2.6 U 10 ug/L 2,6-Dichlorophenol 2.0 U 10 ug/L 2,6-Dinitrotoluene 2.5 U 10 ug/L 2-Acetylaminofluorene 3.1 U 10 ug/L 2-Chloronaphthalene 2.8 U 10 ug/L 2-Chlorophenol 2.2 U 10 ug/L 2-Methyl-4,6-dinitrophenol 3.3 U 10 ug/L 2- Methyl naphthalene 2.8 U 10 ug/L 2-Methylphenol 2.0 U 10 ug/L 2-Naphthylamine 3.0 U 10 ug/L 2-Nitroaniline 2.5 U 10 ug/L 2-Nitrophenol 1.1 U 10 ug/L 3 & 4-Methylphenol 2.1 U 10 ug/L 3,3'-Dichlorobenzidine 3.5 U 10 ug/L 3,3'-Dimethylbenzidine 2.2 U 10 ug/L 3-Methylcholanthrene 1.3 U 10 ug/L 3-Nitroaniline 2.6 U 10 ug/L 4-Aminobiphenyl 3.5 U 10 ug/L 4-Bromophenyl-phenylether 2.4 U 10 ug/L 4-Chloro-3-methylphenol 2.4 U 10 ug/L 4-Chloroaniline 2.0 U 10 ug/L 4-Chlorophenyl-phenylether 2.6 U 10 ug/L 4-Nitroaniline 3.2 U 10 ug/L 4-Nitrophenol 2.8 U 10 ug/L 5-Nitro-o-toluidine 3.2 U 10 ug/L 7,12-Di methyl benz(a)anth racene 1.4 U 10 ug/L a,a-Dimethylphenethylamine 3.5 U 10 ug/L Acenaphthene 2.7 U 10 ug/L Acenaphthylene 2.6 U 10 ug/L Acetophenone 2.0 U 10 ug/L Anthracene 2.4 U 10 ug/L Benzo(a)anthracene 2.4 U 10 ug/L Benzo(a)pyrene 2.2 U 10 ug/L Benzo(b)fluoranthene 2.8 U 10 ug/L Benzo(g,h,i)perylene 2.4 U 10 ug/L Benzo(k)fluoranthene 2.4 U 10 ug/L Benzyl alcohol 2.4 U 10 ug/L Bis(2-chloroethoxy)methane 2.4 U 10 ug/L Bis(2-chloroethyl)ether 2.6 U 10 ug/L Bis(2-chloroisopropyl)ether 2.5 U 10 ug/L Bis(2-ethylhexyl)phthalate 1.9 U 5.0 ug/L Butyl benzylphtha late 3.8 U 10 ug/L Chlorobenzilate 2.4 U 10 ug/L Chrysene 2.2 U 10 ug/L Diallate 1.9 U 10 ug/L Dibenzo(a,h)anthracene 2.3 U 10 ug/L Dibenzofuran 2.6 U 10 ug/L Diethylphtha late 2.4 U 10 ug/L Dimethoate 2.3 U 10 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes QV-01 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 18 Of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Semivolatile Organic Compounds by GCMS - Quality Control Batch 0119001 - EPA 3510C MS - Continued Blank (0319001-BLK1) Continued Prepared: 10/19/2020 07:16 Analyzed: 10/22/2020 13:52 Analvte Result Flaq POL Units Dimethylphthalate 2.5 U 10 ug/L Di-n-butylphthalate 2.8 U 10 ug/L Di-n-octylphthalate 3.1 U 10 ug/L Disulfoton 2.0 U 10 ug/L Ethyl methanesulfonate 2.2 U 10 ug/L Famphur 2.7 U 10 ug/L Fluoranthene 3.1 U 10 ug/L Fluorene 2.5 U 10 ug/L Hexachlorobenzene 2.3 U 10 ug/L Hexachlorobutadiene 2.8 U 10 ug/L Hexachlorocyclopentadiene 2.7 U 10 ug/L Hexachloroethane 2.6 U 10 ug/L Hexachloropropene 6.8 U 10 ug/L Indeno(1,2,3-cd)pyrene 2.2 U 10 ug/L Isodrin 1.5 U 10 ug/L Isophorone 2.5 U 10 ug/L Isosafrole 2.2 U 10 ug/L Kepone 7.2 U 20 ug/L Methapyrilene 4.8 U 10 ug/L Methyl Methanesulfonate 2.2 U 10 ug/L Methyl parathion 2.5 U 10 ug/L Nitrobenzene 2.5 U 10 ug/L N-Nitrosodiethylamine 2.1 U 10 ug/L N-Nitrosodimethylamine 1.9 U 10 ug/L N-Nitrosodi-n-butylamine 2.0 U 10 ug/L N-Nitroso-di-n-propylamine 2.3 U 10 ug/L N-nitrosodiphenylamine/Diphenylamine 2.5 U 10 ug/L N-Nitrosomethylethylamine 1.9 U 10 ug/L N-Nitrosopiperidine 2.1 U 10 ug/L N-Nitrosopyrrolidine 1.9 U 10 ug/L O,O,O-Triethylphosphorothioate 2.2 U 10 ug/L o-Toluidine 1.6 U 10 ug/L Parathion 1.7 U 10 ug/L p-Dimethylaminoazobenzene 2.6 U 10 ug/L Pentachlorobenzene 2.7 U 10 ug/L Pentachloronitrobenzene 1.9 U 10 ug/L Phenacetin 2.7 U 10 ug/L Phenanthrene 2.6 U 10 ug/L Phenol 1.7 U 10 ug/L Phorate 2.1 U 10 ug/L Pronamide 1.7 U 10 ug/L Pyrene 3.5 U 10 ug/L Safrole 2.2 U 10 ug/L Thionazin 2.3 U 10 ug/L Spike Source %REC Level Result %REC Limits 2,4,6-Tribromophenoi 76 u91L 100 76 10-179 2-Fiuorobiphenyi 45 u91L 50.0 90 10-149 2-Fiuorophenoi 56 u91L 100 56 10-110 Nitrobenzene-d5 37 u91L 50.0 75 10-149 Phenohd5 47 u91L 100 47 10-88 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. RPD RPD Limit Notes Page 19 of 36 0Nk"q09 www.encolabs.com QUALITY CONTROL DATA Semivolatile Organic Compounds by GCMS - Quality Control Batch 0119001 - EPA 3510C MS - Continued Blank (0319001-BLK1) Continued Prepared: 10/19/2020 07:16 Analyzed: 10/22/2020 13:52 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Lim! RPD Limit Notes Terphenyl--d14 44 u91L 50.0 89 10-188 LCS (0319001-BS1) Prepared: 10/19/2020 07:16 Analyzed: 10/22/2020 14:24 Spike Source %REC RPD Analvte Result Flao POL Units Level Result %REC Limits RPD Limit Notes 2-Chlorophenol 41 10 ug/L 50.0 82 40-109 4-Chloro-3-methylphenol 43 10 ug/L 50.0 85 58-121 4-Nitrophenol 28 10 ug/L 50.0 56 33-105 Acenaphthene 47 10 ug/L 50.0 94 39-125 N-Nitroso-di-n-propylamine 39 10 ug/L 50.0 77 48-126 Phenol 28 10 ug/L 50.0 56 19-78 Pyrene 51 10 ug/L 50.0 103 44-137 2,4,6-Tribromophenol 98 u9/L 100 98 10-179 2-Fluorobiphenyl 48 u9/L 50.0 96 10-149 2-Fluorophenol 63 u9/L 100 63 10-110 Nitrobenzene-d5 40 u9/L 50.0 81 10-149 Phenoho!5 51 u9/L 100 51 10-88 Terpheny/-d14 52 u9/L 50.0 103 10-I88 Matrix Spike (0719001-MS1) Prepared: 10/19/2020 07:16 Analyzed: 10/22/2020 14:55 Source: CD17019-06 Spike Source %REC RPD Analvte Result Flaq Q Units Level Res I %REC Limits RPD Limit Notes 2-Chlorophenol 40 10 ug/L 50.0 2.2 U 80 40-109 4-Chloro-3-methylphenol 44 10 ug/L 50.0 2.4 U 87 58-121 4-Nitrophenol 30 10 ug/L 50.0 2.8 U 59 33-105 Acenaphthene 47 10 ug/L 50.0 2.7 U 95 39-125 N-Nitroso-di-n-propylamine 40 10 ug/L 50.0 2.3 U 80 48-126 Phenol 27 10 ug/L 50.0 1.7 U 54 19-78 Pyrene 52 10 ug/L 50.0 3.5 U 104 44-137 2,4,6-Tribromophenol 100 u9/L 100 101 10-179 2-Fluorobiphenyl 48 u9/L 50.0 96 10-149 2-Fluorophenol 65 u9/L 100 65 10-110 Nitrobenzene-d5 41 u9/L 50.0 81 10-149 Phenohd5 51 u9/L 100 51 10-88 Terpheny/-d14 52 u9/L 50.0 104 10-I88 Matrix Spike Dup (0319001-MSD1) Prepared: 10/19/2020 07:16 Analyzed: 10/22/2020 15:27 Source: CD17019-06 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes 2-Chlorophenol 40 10 ug/L 50.0 2.2 U 79 40-109 0.9 22 4-Chloro-3-methylphenol 43 10 ug/L 50.0 2.4 U 85 58-121 3 22 4-Nitrophenol 28 10 ug/L 50.0 2.8 U 56 33-105 5 27 Acenaphthene 46 10 ug/L 50.0 2.7 U 92 39-125 3 25 N-Nitroso-di-n-propylamine 38 10 ug/L 50.0 2.3 U 77 48-126 4 23 Phenol 28 10 ug/L 50.0 1.7 U 55 19-78 2 18 Pyrene 46 10 ug/L 50.0 3.5 U 93 44-137 11 24 2,4,6-Tribromophenol 98 u9/L 100 98 10-179 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 20 Of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Semivolatile Organic Compounds by GCMS - Quality Control Batch 0JI9001 - EPA 3510C MS - Continued Matrix Spike Dup (0319001-MSDI) Continued Prepared: 10/19/2020 07:16 Analyzed: 10/22/2020 15:27 Source: CD17019-06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 2-Fluorobiphenyl 47 u91L 50.0 94 10-149 2-Fluorophenol 64 u91L 100 64 10-110 Nitrobenzene-d5 40 u91L 50.0 81 10-149 Phenohd5 51 u91L 100 51 10-88 Terphenyl-d14 47 u91L 50.0 95 10-188 Organochlorine Pesticides by GC - Quality Control Batch OJ14019 - EPA 3510C Blank (0314029-BLK3) Prepared: 10/14/2020 12:04 Analyzed: 10/16/2020 05:34 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 4,4'-DDD 0.044 U 0.050 ug/L 4,4'-DDE 0.048 U 0.050 ug/L 4,4'-DDT 0.049 U 0.050 ug/L Aldrin 0.041 U 0.050 ug/L alpha-BHC 0.036 U 0.050 ug/L beta-BHC 0.041 U 0.050 ug/L Chlordane (tech) 0.37 U 0.50 ug/L Chlordane -alpha 0.048 U 0.050 ug/L Chlordane -gamma 0.042 U 0.050 ug/L delta-BHC 0.048 U 0.050 ug/L Dieldrin 0.045 U 0.050 ug/L Endosulfan I 0.045 U 0.050 ug/L Endosulfan II 0.038 U 0.050 ug/L Endosulfan sulfate 0.032 U 0.050 ug/L Endrin 0.041 U 0.050 ug/L Endrin aldehyde 0.049 U 0.050 ug/L gamma-BHC 0.034 U 0.050 ug/L Heptachlor 0.047 U 0.050 ug/L Heptachlor epoxide 0.037 U 0.050 ug/L Methoxychlor 0.048 U 0.050 ug/L Toxaphene 0.28 U 1.0 ug/L 2,4,5,E-TCMX 0.79 u91L 1.00 79 10-139 Decachlorobiphenyl 1.2 u91L 1.00 116 10-122 LCS (0314029-BSI) Prepared: 10/14/2020 12:04 Analyzed: 10/16/2020 05:48 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 4,4'-DDT 1.3 0.050 ug/L 1.00 126 37-139 Dieldrin 1.0 0.050 ug/L 1.00 102 46-132 Endrin 1.1 0.050 ug/L 1.00 112 43-133 2,4,5,E-TCMX 0.77 u91L 1.00 77 10-139 Decachlorobiphenyl 1.2 u91L 1.00 119 10-122 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 21 Of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Organochlorine Pesticides by GC - Quality Control Batch 0114029 - EPA 3510C - Continued Matrix Spike (0314029-MS1) Prepared: 10/14/2020 12:04 Analyzed: 10/16/2020 06:00 Source: CD16874-06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 4,4'-DDT 2.2 0.050 ug/L 1.00 0.049 U 219 37-139 QM-07 Dieldrin 1.1 0.050 ug/L 1.00 0.045 U 112 46-132 Endrin 1.2 0.050 ug/L 1.00 0.041 U 121 43-133 2,4,5,E-TCMX 0.67 u91L 1.00 67 10-139 Decachloroblphenyl 1.2 u91L 1.00 115 10-122 Matrix Spike Dup (0714029-MSD1) Prepared: 10/14/2020 12:04 Analyzed: 10/16/2020 06:13 Source: CD16874-06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 4,4'-DDT 1.7 0.050 ug/L 1.00 0.049 U 169 37-139 26 26 QM-07 Dieldrin 1.2 0.050 ug/L 1.00 0.045 U 115 46-132 3 27 Endrin 1.3 0.050 ug/L 1.00 0.041 U 126 43-133 4 26 2,4,5,E-TCMX 0.77 u91L 1.00 77 10-139 Decachlorobiphenyl 1.2 ug/L 1.00 120 10-122 Polychlorinated Biphenyls by GC - Quality Control Batch 0115002 - EPA 3510C Blank (0315002-BLK3) Prepared: 10/15/2020 06:43 Analyzed: 10/17/2020 08:07 Analvte Result Flag Q Units PCB-1016/1242 0.48 U 0.50 ug/L PCB-1221 0.43 U 0.50 ug/L PCB-1232 0.50 U 0.50 ug/L PCB-1248 0.45 U 0.50 ug/L PCB-1254 0.43 U 0.50 ug/L PCB-1260 0.47 U 0.50 ug/L Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes 2,4,5,6-TCMX 1.1 u91L 1.00 108 10-128 Decachlorobiphenyl 1.1 u91L 1.00 113 10-129 LCS (0315002-BS1) Prepared: 10/15/2020 06:43 Analyzed: 10/17/2020 08:20 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes PCB-1016/1242 6.8 0.50 ug/L 10.0 68 43-123 PCB-1260 10 0.50 ug/L 10.0 101 41-125 2,4,5,6-TCMX 0.92 u91L 1.00 92 10-128 Decachlorobiphenyl 1.2 u91L 1.00 116 10-129 Matrix Spike (0315002-MS1) Prepared: 10/15/2020 06:43 Analyzed: 10/17/2020 08:34 Source: CD16874-06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes PCB-1016/1242 9.2 0.50 ug/L 10.0 0.48 U 92 43-123 PCB-1260 12 0.50 ug/L 10.0 0.47 U 118 41-125 2,4,5,E-TCMX 1.2 u91L 1.00 120 10-128 Decachlorobiphenyl 1.1 u91L 1.00 107 10-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 22 Of 36 QUALITY CONTROL DATA Polychlorinated Biphenyls by GC - Quality Control Batch 0115002 - EPA 3510C - Continued (� �Eo www.encolabs.com Matrix Spike Dup (0315002-MSDI) Prepared: 10/15/2020 06:43 Analyzed: 10/17/2020 08:47 Source: CD16874-06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes PCB-1016/1242 7.4 0.50 ug/L 10.0 0.48 U 74 43-123 22 23 PCB-1260 10 0.50 ug/L 10.0 0.47 U 100 41-125 16 31 2,4,5,6-TCMX 0.96 u91L 1.00 96 10-128 Decachloroblphenyl 1.1 u91L 1.00 108 10-129 Metals by EPA 6000/7000 Series Methods - Quality Control Batch OJ21042 - EPA 7470A Blank (0121042-BLK3) Prepared: 10/21/2020 16:21 Analyzed: 10/23/2020 13:24 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 (0321042-BS1) Prepared: 10/21/2020 16:21 Analyzed: 10/23/2020 13:26 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.95 0.200 ug/L 5.00 99 80-120 Matrix Spike (0721042-MS1) Prepared: 10/21/2020 16:21 Analyzed: 10/23/2020 13:30 Source: C11335263-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.92 0.200 ug/L 5.00 0.150 U 98 75-125 Matrix Spike Dup (0323042-MSD1) Prepared: 10/21/2020 16:21 Analyzed: 10/23/2020 13:33 Source: CD15263-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.81 0.200 ug/L 5.00 0.150 U 96 75-125 2 25 Post Spike (0323042-PS1) Prepared: 10/21/2020 16:21 Analyzed: 10/23/2020 13:36 Source: CD15263-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.40 0.200 ug/L 5.00 -0.0510 108 75-125 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OJ20025 - EPA 3005A Blank (0320025-BLK1) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:39 Analvte Result Flaq POL Units Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 23 Of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OJ20025 - EPA 3005A - Continued Blank (0320025-BLK1) Continued Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:39 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 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 Tin 2.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L LCS (0720025-BS1) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:46 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 181 10.0 ug/L 200 91 80-120 Barium 201 10.0 ug/L 200 101 80-120 Beryllium 19.0 1.00 ug/L 20.0 95 80-120 Cadmium 18.9 1.00 ug/L 20.0 95 80-120 Chromium 193 10.0 ug/L 200 96 80-120 Cobalt 191 10.0 ug/L 200 95 80-120 Copper 191 10.0 ug/L 200 96 80-120 Lead 190 10.0 ug/L 200 95 80-120 Nickel 200 10.0 ug/L 200 100 80-120 Selenium 190 10.0 ug/L 200 95 80-120 Silver 197 10.0 ug/L 200 98 80-120 Tin 187 10.0 ug/L 200 94 80-120 Vanadium 190 10.0 ug/L 200 95 80-120 Zinc 199 10.0 ug/L 200 100 80-120 Matrix Spike (0320025-MS3) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:48 Source: CD16621-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 116 10.0 ug/L 200 7.60 U 58 75-125 QM-07 Barium 908 10.0 ug/L 200 659 124 75-125 Beryllium 20.5 1.00 ug/L 20.0 0.160 U 102 75-125 Cadmium 16.6 1.00 ug/L 20.0 0.360 U 83 75-125 Chromium 208 10.0 ug/L 200 4.94 102 75-125 Cobalt 208 10.0 ug/L 200 10.3 99 75-125 Copper 196 10.0 ug/L 200 1.60 U 98 75-125 Lead 199 10.0 ug/L 200 3.10 U 99 75-125 Nickel 240 10.0 ug/L 200 31.1 104 75-125 Selenium 194 10.0 ug/L 200 6.20 U 97 75-125 Silver 212 10.0 ug/L 200 1.90 U 106 75-125 Tin 197 10.0 ug/L 200 2.90 U 99 75-125 Vanadium 197 10.0 ug/L 200 1.40 U 98 75-125 Zinc 207 10.0 ug/L 200 25.6 91 75-125 Matrix Spike Dup (0320025-MSD1) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:51 Source: CD16621-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 116 10.0 ug/L 200 7.60 U 58 75-125 0.6 20 QM-07 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 24 Of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OJ20025 - EPA 3005A - Continued Matrix Spike Dup (0320025-MSDI) Continued Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:51 Source: CD16621-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Barium 907 10.0 ug/L 200 659 124 75-125 0.05 20 Beryllium 20.4 1.00 ug/L 20.0 0.160 U 102 75-125 0.5 20 Cadmium 16.5 1.00 ug/L 20.0 0.360 U 83 75-125 0.8 20 Chromium 287 10.0 ug/L 200 4.94 141 75-125 32 20 QM-07, QM-11 Cobalt 209 10.0 ug/L 200 10.3 99 75-125 0.3 20 Copper 196 10.0 ug/L 200 1.60 U 98 75-125 0.4 20 Lead 198 10.0 ug/L 200 3.10 U 99 75-125 0.7 20 Nickel 287 10.0 ug/L 200 31.1 128 75-125 18 20 QM-07 Selenium 181 10.0 ug/L 200 6.20 U 90 75-125 7 20 Silver 211 10.0 ug/L 200 1.90 U 106 75-125 0.4 20 Tin 197 10.0 ug/L 200 2.90 U 98 75-125 0.4 20 Vanadium 196 10.0 ug/L 200 1.40 U 98 75-125 0.6 20 Zinc 209 10.0 ug/L 200 25.6 92 75-125 0.8 20 Post Spike (0320025-PS1) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:53 Source: CD16621-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.130 0.0100 mg/L 0.200 -0.0831 65 80-120 QM-08 Barium 0.898 0.0100 mg/L 0.200 0.659 120 80-120 Beryllium 0.0205 0.00100 mg/L 0.0200 -0.000138 102 80-120 Cadmium 0.0167 0.00100 mg/L 0.0200 -0.00327 84 80-120 Chromium 0.208 0.0100 mg/L 0.200 0.00494 102 80-120 Cobalt 0.207 0.0100 mg/L 0.200 0.0103 98 80-120 Copper 0.196 0.0100 mg/L 0.200 -0.0176 98 80-120 Lead 0.196 0.0100 mg/L 0.200 9.88E-5 98 80-120 Nickel 0.237 0.0100 mg/L 0.200 0.0311 103 80-120 Selenium 0.182 0.0100 mg/L 0.200 -0.0297 91 80-120 Silver 0.217 0.0100 mg/L 0.200 -0.00215 109 80-120 Tin 0.198 0.0100 mg/L 0.200 -0.00398 99 80-120 Vanadium 0.197 0.0100 mg/L 0.200 -0.0115 99 80-120 Zinc 0.232 0.0100 mg/L 0.200 0.0256 103 80-120 Batch OJ22021 - EPA 3005A Blank (0322021-BLK3) Prepared: 10/22/2020 12:48 Analyzed: 10/26/2020 10:11 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 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 25 of 36 0Nk"q09 www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OJ22021 - EPA 3OO5A - Continued Blank (0322021-BLK1) Continued Prepared: 10/22/2020 12:48 Analyzed: 10/26/2020 10:11 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L LCS (0122021-BSI) Prepared: 10/22/2020 12:48 Analyzed: 10/26/2020 11:35 Spike Source %REC RPD Analvte Result FFaa POL Units Level Result %REC Limits RPD Limit Notes Arsenic 196 10.0 ug/L 200 98 80-120 Barium 213 10.0 ug/L 200 107 80-120 Beryllium 20.1 1.00 ug/L 20.0 101 80-120 Cadmium 20.6 1.00 ug/L 20.0 103 80-120 Chromium 206 10.0 ug/L 200 103 80-120 Cobalt 205 10.0 ug/L 200 103 80-120 Copper 205 10.0 ug/L 200 103 80-120 Lead 203 10.0 ug/L 200 101 80-120 Nickel 212 10.0 ug/L 200 106 80-120 Selenium 209 10.0 ug/L 200 104 80-120 Silver 214 10.0 ug/L 200 107 80-120 Vanadium 203 10.0 ug/L 200 102 80-120 Zinc 210 10.0 ug/L 200 105 80-120 Matrix Spike (OJ22021-MS1) Prepared: 10/22/2020 12:48 Analyzed: 10/26/2020 11:38 Source: CD16047-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limi RPD Lima Notes Arsenic 190 10.0 ug/L 200 7.60 U 95 75-125 Barium 262 10.0 ug/L 200 44.0 109 75-125 Beryllium 20.8 1.00 ug/L 20.0 0.160 U 104 75-125 Cadmium 21.1 1.00 ug/L 20.0 0.360 U 105 75-125 Chromium 212 10.0 ug/L 200 1.40 U 106 75-125 Cobalt 247 10.0 ug/L 200 36.9 105 75-125 Copper 222 10.0 ug/L 200 15.3 103 75-125 Lead 206 10.0 ug/L 200 3.10 U 103 75-125 Nickel 217 10.0 ug/L 200 2.20 U 109 75-125 Selenium 211 10.0 ug/L 200 6.20 U 105 75-125 Silver 216 10.0 ug/L 200 1.90 U 108 75-125 Vanadium 208 10.0 ug/L 200 1.40 U 104 75-125 Zinc 219 10.0 ug/L 200 4.40 U 109 75-125 Matrix Spike Dup (0322021-MSD1) Prepared: 10/22/2020 12:48 Analyzed: 10/26/2020 11:47 Source: CD16047-01 Spike Analvte Result Flaq POL Units Level Arsenic 197 10.0 ug/L 200 Barium 274 10.0 ug/L 200 Beryllium 21.5 1.00 ug/L 20.0 Cadmium 22.0 1.00 ug/L 20.0 Chromium 220 10.0 ug/L 200 Cobalt 257 10.0 ug/L 200 Copper 231 10.0 ug/L 200 Lead 216 10.0 ug/L 200 Source Result 7.60 U 44.0 0.160 U 0.360 U 1.40 U 36.9 15.3 3.10 U %REC 98 115 108 110 110 110 108 108 %REC Limits 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. RPD RPD Limit Notes 4 20 4 20 3 20 4 20 4 20 4 20 4 20 5 20 Page 26 of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OJ22021 - EPA 3OO5A - Continued Matrix Spike Dup (0322021-MSDI) Continued Prepared: 10/22/2020 12:48 Analyzed: 10/26/2020 11:47 Source: CD16047-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nickel 227 10.0 ug/L 200 2.20 U 114 75-125 4 20 Selenium 217 10.0 ug/L 200 6.20 U 109 75-125 3 20 Silver 224 10.0 ug/L 200 1.90 U 112 75-125 4 20 Vanadium 216 10.0 ug/L 200 1.40 U 108 75-125 4 20 Zinc 228 10.0 ug/L 200 4.40 U 114 75-125 4 20 Post Spike (0322021-PSI) Prepared: 10/22/2020 12:48 Analyzed: 10/26/2020 11:49 Source: CD16047-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.198 0.0100 mg/L 0.200 -0.0113 99 80-120 Barium 0.266 0.0100 mg/L 0.200 0.0440 111 80-120 Beryllium 0.0212 0.00100 mg/L 0.0200 0.000133 105 80-120 Cadmium 0.0215 0.00100 mg/L 0.0200 -0.000174 107 80-120 Chromium 0.217 0.0100 mg/L 0.200 0.00107 108 80-120 Cobalt 0.250 0.0100 mg/L 0.200 0.0369 106 80-120 Copper 0.227 0.0100 mg/L 0.200 0.0153 106 80-120 Lead 0.210 0.0100 mg/L 0.200 -0.00146 105 80-120 Nickel 0.222 0.0100 mg/L 0.200 0.000660 111 80-120 Selenium 0.212 0.0100 mg/L 0.200 0.00142 105 80-120 Silver 0.227 0.0100 mg/L 0.200 -0.00198 113 80-120 Vanadium 0.212 0.0100 mg/L 0.200 -0.000503 106 80-120 Zinc 0.225 0.0100 mg/L 0.200 0.00403 111 80-120 Batch OJ26024 - EPA 3OO5A Blank (0326024-BLK1) Prepared: 10/26/2020 12:28 Analyzed: 11/04/2020 14:57 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (O]26024-BS1) Prepared: 10/26/2020 12:28 Analyzed: 11/04/2020 15:01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 22.7 1.00 ug/L 20.0 114 80-120 Selenium 21.5 1.00 ug/L 20.0 107 80-120 Thallium 23.1 1.00 ug/L 20.0 115 80-120 Matrix Spike (0326024-MS1) Prepared: 10/26/2020 12:28 Analyzed: 11/04/2020 15:05 Source: CD16622-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 43.5 2.00 ug/L 40.0 0.740 U 109 75-125 Selenium 40.7 2.00 ug/L 40.0 1.82 U 102 75-125 Thallium 42.1 2.00 ug/L 40.0 0.220 U 105 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 27 of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OJ26024 - EPA 3OO5A - Continued Matrix Spike Dup (0326024-MSDI) Prepared: 10/26/2020 12:28 Analyzed: 11/04/2020 15:09 Source: CD16622-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 44.2 2.00 ug/L 40.0 0.740 U 110 75-125 2 20 Selenium 43.5 2.00 ug/L 40.0 1.82 U 109 75-125 7 20 Thallium 42.7 2.00 ug/L 40.0 0.220 U 107 75-125 1 20 Post Spike (0326024-PS3) Prepared: 10/26/2020 12:28 Analyzed: 11/04/2020 15:14 Source: CD16622-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 26.0 1.00 ug/L 20.0-0.00824 130 75-125 QM-08 Selenium 24.9 1.00 ug/L 20.0 0.192 123 75-125 Thallium 25.1 1.00 ug/L 20.0 0.0231 125 75-125 Batch OKO2O37 - EPA 3OO5A Blank (OK02037-BLKS) Prepared: 11/02/2020 13:41 Analyzed: 11/05/2020 01:28 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (OK02037-BS1) Prepared: 11/02/2020 13:41 Analyzed: 11/05/2020 01:33 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.2 1.00 ug/L 20.0 106 80-120 Selenium 20.8 1.00 ug/L 20.0 104 80-120 Thallium 21.3 1.00 ug/L 20.0 106 80-120 Matrix Spike (OK02037-MS1) Prepared: 11/02/2020 13:41 Analyzed: 11/05/2020 01:37 Source: CD15961-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.9 2.00 ug/L 40.0 0.740 U 107 75-125 Selenium 43.2 2.00 ug/L 40.0 1.82 U 108 75-125 Thallium 42.5 2.00 ug/L 40.0 0.220 U 106 75-125 Matrix Spike Dup (OK02037-MSD1) Prepared: 11/02/2020 13:41 Analyzed: 11/05/2020 01:41 Source: CD15961-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 41.8 2.00 ug/L 40.0 0.740 U 104 75-125 3 20 Selenium 41.5 2.00 ug/L 40.0 1.82 U 104 75-125 4 20 Thallium 42.2 2.00 ug/L 40.0 0.220 U 105 75-125 0.7 20 Post Spike (OK02037-PS3) Prepared: 11/02/2020 13:41 Analyzed: 11/05/2020 01:45 Source: CD15961-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 23.7 1.00 ug/L 20.0 0.0878 118 75-125 Selenium 24.2 1.00 ug/L 20.0 0.185 120 75-125 Thallium 23.8 1.00 ug/L 20.0 0.0750 119 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 28 Of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch OJ2OO15 - NO PREP Blank (0320015-BLK3) Prepared: 10/20/2020 14:41 Analyzed: 10/20/2020 15:00 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 10 U 100 ug/L LCS (0320015-BSI) Prepared: 10/20/2020 14:41 Analyzed: 10/20/2020 15:00 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 0.34 0.10 nng/L 0.401 85 80-120 Duplicate (0320015-DUPl) Prepared: 10/20/2020 14:41 Analyzed: 10/20/2020 15:00 Source: CD16585-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 10 U 100 ug/L 10 U 25 Matrix Spike (0320015-MS3) Prepared: 10/20/2020 14:41 Analyzed: 10/20/2020 15:00 Source: CD16585-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 240 100 ug/L 401 10 U 60 80-120 QM-07 Matrix Spike Dup (OJ20015-MSDI) Prepared: 10/20/2020 14:41 Analyzed: 10/20/2020 15:00 Source: CD16585-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 280 100 ug/L 401 10 U 71 80-120 16 25 QM-07 Batch OJ21O29 - Same Blank (0321029-BLK1) Prepared: 10/22/2020 08:39 Analyzed: 10/23/2020 09:56 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cyanide (total) 4.9 U 10 ug/L LCS (0721029-BS3) Prepared: 10/22/2020 08:39 Analyzed: 10/23/2020 09:58 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes Cyanide (total) 150 10 ug/L 150 102 85-115 Matrix Spike (OJ23029-MS3) Prepared: 10/22/2020 08:39 Analyzed: 10/23/2020 10:05 Source: CD10575-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cyanide (total) 120 10 ug/L 150 4.9 77 85-115 QM-07 Matrix Spike (OJ23029-MS2) Prepared: 10/22/2020 08:39 Analyzed: 10/23/2020 10:10 Source: CD16230-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cyanide (total) 160 10 ug/L 150 4.9 U 105 85-115 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 29 Of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch OJ21029 - Same - Continued Matrix Spike Dup (0323029-MSDI) Prepared: 10/22/2020 08:39 Analyzed: 10/23/2020 10:06 Source: CD10575-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cyanide (total) 110 10 ug/L 150 4.9 67 85-115 13 20 QM-07 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 0119034 - EPA 5030B MS Blank (0319034-BLK1) Prepared: 10/19/2020 00:00 Analyzed: 10/19/2020 23:31 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-& 5.2 ug/L 5.00 105 75-125 LCS (0319034-BS1) Prepared: 10/19/2020 00:00 Analyzed: 10/19/2020 21:50 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 101 80-133 Toluene-d8 5.2 ug/L 5.00 104 75-125 Matrix Spike (0319034-MS1) Prepared: 10/19/2020 00:00 Analyzed: 10/19/2020 22:15 Source: CD16622-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 27 2.0 ug/L 25.0 0.80 U 108 80-133 Toluene-d8 5.2 ug/L 5.00 105 75-125 Matrix Spike Dup (0319034-MSD1) Prepared: 10/19/2020 00:00 Analyzed: 10/19/2020 22:40 Source: CD16622-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 27 2.0 ug/L 25.0 0.80 U 108 80-133 0.04 19 Toluene-d8 5.2 ug/L 5.00 104 75-125 Batch OJ23037 - EPA 5030B MS Blank (0323037-BLK3) Prepared: 10/23/2020 00:00 Analyzed: 10/23/2020 10:24 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 5.4 ug/L 5.00 108 75-125 LCS (0323037-BS1) Prepared: 10/23/2020 00:00 Analyzed: 10/23/2020 09:59 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 27 2.0 ug/L 25.0 107 80-133 Toluene-d8 5.0 ug/L 5.00 101 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 30 Of 36 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OJ23037 - EPA 5030B MS - Continued Matrix Spike (0323037-MS1) Prepared: 10/23/2020 00:00 Analyzed: 10/23/2020 12:35 Source: CD17113-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 26 2.0 ug/L 25.0 1.0 100 80-133 Toluene-d8 5.4 ug/L 5.00 108 75-125 Matrix Spike Dup (0723037-MSD1) Prepared: 10/23/2020 00:00 Analyzed: 10/23/2020 13:00 Source: CD17113-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 27 2.0 ug/L 25.0 1.0 102 80-133 2 19 Toluene-d8 5.4 u91L 5.00 108 75-125 Chlorinated Herbicides by GC - Quality Control Batch 0114067 - EPA 3510C Blank (0114067-BLK3) Prepared: 10/14/2020 13:45 Analyzed: 10/15/2020 10:55 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes 2,4,5-T 0.28 U 0.50 ug/L 2,4,5-TP (Silvex) 0.44 U 0.50 ug/L 2,4-D 0.27 U 0.50 ug/L Dinoseb 0.32 U 0.50 ug/L Pentachlorophenol 0.19 U 0.50 ug/L 2,4-DC4A 2.6 u91L 2.00 129 37-134 LCS (0714067-BS3) Prepared: 10/14/2020 13:45 Analyzed: 10/15/2020 11:45 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 2,4,5-TP (Silvex) 1.7 0.50 ug/L 2.00 86 24-135 2,4-D 1.5 0.50 ug/L 2.00 76 20-134 2, 4-DC4A 2.6 u91L 2.00 129 37-134 Matrix Spike (0314067-MS3) Prepared: 10/14/2020 13:45 Analyzed: 10/15/2020 12:10 Source: AD06770-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 2,4,5-TP (Silvex) 7.4 2.5 ug/L 10.0 2.2 U 74 24-135 2,4-D 6.8 2.5 ug/L 10.0 1.4 U 68 20-134 2,4-DC4A 12 u91L 10.0 118 37-134 Matrix Spike Dup (0314067-MSDI) Prepared: 10/14/2020 13:45 Analyzed: 10/15/2020 12:36 11 Source: AD06770-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 2,4,5-TP (Silvex) 6.3 2.5 ug/L 10.0 2.2 U 63 24-135 16 19 2,4-D 8.8 2.5 ug/L 10.0 1.4 U 88 20-134 26 19 QM-11 2,4-DC4A 12 u91L 10.0 125 37-134 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 31 Of 36 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QL-02 The associated laboratory control sample exhibited high bias; since the result is ND, there is no impact. QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. QM-08 Post -digestion spike did not meet method requirements due to confirmed matrix effects (dilution test). QM-11 Precision between duplicate matrix spikes of the same sample was outside acceptance limits. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 32 of 36 E 0 N O V Q: 3 3 0 O U u/.l � LL 0 0 m Q LL O Z a x U [n w a D a cr O co a J Z 0 a 'w/� VI z O U J Z L!J Z Oy li Z lu 0 � I 0 cm m U OI i 4 d cq � N �j �U h a C CL co H U m Q m � z Q� U � S-005trVgS epgInS a D y a U � m m n a � 5 x 6H t► 06 Ill epluBAO C rD ° m uZ'J1`)18S x n ) �co z ` Z � q,`46'4d'iN`n�`+�`DJ`I�`06`M@ s1I der in C U In m _ `o z Z XIPUodde 30LZ9 m x Z E = w L (3) VMS (Mz9 p(*VGIX3 a v X ODQU'ZXIPJQMVQOizB Z 0 N QI WIS QQ8Z8` 4 xlpuGddy QMZ$ a x ro U° E` E Et ZxlP4edd�Itl4�L6'�XlWeddaVZ908 F a a o a Z xipueddd x u 2 o m� E m r /i o 4 Q U. y.+ V N d w O J N E a N o c lY m 2 FE U m o in E r y d 0- d S m •r m n O tO U a CY N m W � E c 3 U) e �Q} C -4- Ag S} tit 4 E E L. Z m` `m Y � m u � 36 =' v a E E E Page 33 of L3 ¢ U Vi r!i CA U Sample Preservation Verification ENCO Cary 9900 Work Order: CD16622 Project. White Street LF-Phase 1.11 Client: Golder Associates, Inc. (GO007) Project #: 1668421.106 Logged In: 14-Oct-20 14:16 Logged By: Rachel Ann YY Iis+h ` Preservation Check Performed By: w Date/Time: � t)�4 `mil l CD16622-01 0 Cont Type Pres (pH) Requirement pH Checked I In Control pH Adjusted Date/Time Adjusted Reagent Used/Comments F 250mLA (PEST) Pest pH 5-9 -)I N I NA Y I ey NA G 250mLA (PEST) Pest pH 5-9 YJ 1 N 1 NA Y / 6/ NA H 250mLP+NaOH >12 Y' I N I NA Y I 1 NA I 250mLP+HNO3 <2 Y,/ N I NA Y I N I NA J 250mLP+ZnAc+N@0H >9 Y I N I NA Y I 0 NA Rea ent Name ID 1 2 Rea ent Name ID 3 4 Rea ent Name ID 5 6 pH Strip ID: PH Strips C0P0555 Caelmnt\Prir,ovy w2,reservation Check. rpt Page 34 of 36 0 1 E v 4A u 3 V) LU 0 u a� CL � A � 'O U m � X ,W c (1) LLI tU ( W F. m E m m A d O v Q G U d v. a E o � O c a � id Q U m � m N w m ! iZ ✓� Y c � m G T 3 _ N y d m N m m = 7 m ¢ ¢ ¢ z ¢ e y C w c O p m 1 m - m w y v o aubx��U -r� /y- OA I dj7 J`IN � o o a f/ V dW )dV -)N N p W � � � V C t y 3 I w 5 UP cr 10 00 z z .o S O cc a u. a cc m n 1 N v fi N m ftl C E m � ¢ z U ° toil LJ G e 0. L /� ! ,� ¢ s �, p l m m o m 3 m o m ^lZb _ � c 2 (77 v a h � I E Page 35 of E 36 4 N Sample Preservation Verification ENCO Cary ENCO Work Order: CD17113 Client; Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1.11 Project #: 1668421.106 Logged In: 16-Oct-20 16:09 Lagged By: Rachel Ann o ish e Preservation Check Performed By: �� Date/Time: '� v CD17113-01 Cont Type Pres (pH) Requirement pH Checked r In Control pH Adjusted Datefiime Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 YJ N I NA / / NA Reagent Name ID 2 pH Strip I D PH Strips COF0555 - Reagent Name ID 3 4 Rea ent Name ID 5 6 C:Ielmnt\Pr...Livy nulr• i raei vationunecK. rpt Page 36 of 36 ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Thursday, November 5, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.107, Project Name/Desc: White Street LF-Phase I,II,III SW ENCO Workorder(s): CD16623 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, October 16, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, 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: November 5, 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11,111 SW Lab ID: CD16623 Overview (� �Eo www.encolabs.com Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples The 8260D LCS exhibited a high bias for 1, 1 -Dichloroethene; however, this analyte was not detected in the associated samples. The Continuing Calibration Verification (CCV) exhibited a high bias for 1,1-Dichloroethene, 1,2-Dibromoethane, and Bromomethane; however, these analytes were not detected in the associated samples. The spike recovery for Benzene was outside control limits for the MSD sample, the precision between duplicate spikes of Benzene, Toluene, and Trichloroethene exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these analytes. The spike recovery for 1,1-Dichloroethene was outside control limits for the MS and MSD samples, the precision between duplicate spikes of 1,1-Dichloroethene exceeded acceptance criteria; however, this analyte was not detected in the associated samples. The spike recoveries for Antimony, Arsenic, Chromium, and Nickel were outside control limits for the MS, MSD, and/or Post Digestion samples, the precision between duplicate spikes of Chromium exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these elements. Quality Control Remarks No Comments Other Comments The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. 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: CD16623-01 Sampled: 10/15/20 15:25 Received: 10/16/20 13:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/13/21 10/20/20 15:35 10/22/20 11:37 EPA 6020E EPA 3005A 04/13/21 10/26/20 12:28 11/04/20 16:30 EPA 8260D EPA 503013_MS 10/29/20 10/22/20 00:00 10/22/20 15:17 EPA 8260D EPA 503013_MS 10/29/20 10/25/20 10:52 10/25/20 21:15 Client ID: 4303/12-SW2 Lab ID: CD36623-02 Sampled: 10/15/20 13:43 Received: 10/16/20 13:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/13/21 10/20/20 15:35 10/22/20 11:21 EPA 6020E EPA 3005A 04/13/21 10/26/20 12:28 11/04/20 16:39 EPA 8260D EPA 503013_MS 10/29/20 10/22/20 00:00 10/22/20 15:42 EPA 8260D EPA 503013_MS 10/29/20 10/25/20 10:52 10/25/20 21:45 Client ID: 4303/12-SW3 Lab ID: CD16623-03 Sampled: 10/15/20 14:49 Received: 10/16/20 13:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/13/21 10/20/20 15:35 10/22/20 11:24 EPA 6020B EPA 3005A 04/13/21 10/26/20 12:28 11/04/20 16:44 EPA 8260D EPA 503013_MS 10/29/20 10/22/20 00:00 10/22/20 13:11 EPA 8260D EPA 5030B_MS 10/29/20 10/25/20 10:52 10/25/20 22:15 Client ID: 4303/12-SW4 Lab ID: CD16623-04 Sampled: 10/15/20 14:10 Received: 10/16/20 13:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/13/21 10/20/20 15:35 10/22/20 11:34 EPA 6020B EPA 3005A 04/13/21 10/26/20 12:28 11/04/20 16:48 EPA 8260D EPA 503013_MS 10/29/20 10/22/20 00:00 10/22/20 16:08 EPA 8260D EPA 503013_MS 10/29/20 10/25/20 10:52 10/25/20 22:45 Client ID: 4303/12-Trip Blank Lab ID: CD36623-05 Sampled: 10/15/20 13:43 Received: 10/16/20 13:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 10/29/20 10/22/20 00:00 10/22/20 10:39 EPA 8260D EPA 503013_MS 10/29/20 10/25/20 10:52 10/25/20 23:15 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: CD16623-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 47.9 1.10 10.0 ug/L EPA 6010D Chromium - Total 3.09 J 1.40 10.0 ug/L EPA 6010D Copper - Total 4.38 J 1.60 10.0 ug/L EPA 6010D Zinc - Total 6.40 J 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW2 Lab ID: CD16623-02 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.2 J 0.80 2.0 ug/L EPA 8260D Barium - Total 48.5 1.10 10.0 ug/L EPA 6010D Chromium - Total 1.64 1 1.40 10.0 ug/L EPA 6010D Copper - Total 4.03 J 1.60 10.0 ug/L EPA 6010D Client ID: 4303/12-SW3 Lab ID: CD16623-03 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 47.3 1.10 10.0 ug/L EPA 6010D Chromium - Total 2.85 J 1.40 10.0 ug/L EPA 6010D Copper - Total 4.33 J 1.60 10.0 ug/L EPA 6010D Nickel - Total 3.50 J 2.20 10.0 ug/L EPA 6010D Zinc - Total 14.5 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW4 Lab ID: CD16623-04 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 52.0 1.10 10.0 ug/L EPA 6010D Chromium - Total 2.29 J 1.40 10.0 ug/L EPA 6010D Copper - Total 4.59 J 1.60 10.0 ug/L EPA 6010D Zinc - Total 10.3 4.40 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 24 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW1 Lab Sample ID:CD16623-01 Received: 10/16/20 13:00 Matrix: Surface Water Sampled:10/15/20 15:25 Work Order: CD16623 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 21:15 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 0125009 EPA 8260D 10/25/20 21:15 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 0125009 EPA 8260D 10/25/20 21:15 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 21:15 REF 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 21:15 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 21:15 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 21:15 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 21:15 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 0125009 EPA 8260D 10/25/20 21:15 REF QV-01 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 21:15 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 21:15 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 0125009 EPA 8260D 10/25/20 21:15 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 21:15 REF 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 0125009 EPA 8260D 10/25/20 21:15 REF 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 0125009 EPA 8260D 10/25/20 21:15 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 0125009 EPA 8260D 10/25/20 21:15 REF Acetone [67-64-1]A 10 u ug/L 1 10 20 0125009 EPA 8260D 10/25/20 21:15 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 0125009 EPA 8260D 10/25/20 21:15 REF Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 21:15 REF QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 0125009 EPA 8260D 10/25/20 21:15 REF Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 21:15 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 21:15 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 0125009 EPA 8260D 10/25/20 21:15 REF Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 21:15 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 21:15 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 21:15 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 0125009 EPA 8260D 10/25/20 21:15 REF Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 0125009 EPA 8260D 10/25/20 21:15 REF Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 0125009 EPA 8260D 10/25/20 21:15 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW1 Lab Sample ID:CD16623-01 Received: 10/16/20 13:00 Matrix: Surface Water Sampled:10/15/20 15:25 Work Order: CD16623 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 53 1 50.0 106 % 53-136 OJ25009 EPA 826OD 10125120 21:15 REF Dibromofluoromethane 57 1 50.0 114 % 67-129 OJ25009 EPA 826OD 10125120 21:15 REF Toluene-d8 54 1 50.0 108 % 59-134 OJ25009 EPA 626OD 10125120 21:15 REF Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OJ26024 EPA 6020B 11/04/20 16:30 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OJ20025 EPA 6010D 10/22/20 11:37 JDH Barium [7440-39-3]^ 47.9 ug/L 1 1.10 10.0 O120025 EPA 6010D 10/22/20 11:37 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OJ20025 EPA 6010D 10/22/20 11:37 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OJ20025 EPA 6010D 10/22/20 11:37 JDH Chromium [7440-47-3]^ 3.09 J ug/L 1 1.40 10.0 O120025 EPA 6010D 10/22/20 11:37 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OJ20025 EPA 6010D 1O/22/20 11:37 JDH Copper[7440-50-8]^ 4.38 J ug/L 1 1.60 10.0 O120025 EPA 6010D 10/22/20 11:37 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OJ20025 EPA 6010D 10/22/20 11:37 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OJ20025 EPA 6010D 1O/22/20 11:37 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OJ20025 EPA 6010D 10/22/20 11:37 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OJ20025 EPA 6010D 10/22/20 11:37 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OJ26024 EPA 6020B 11/04/20 16:30 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OJ20025 EPA 6010D 10/22/20 11:37 JDH Zinc[744O-66-6]^ 6.40 J ug/L 1 4.40 10.0 O120025 EPA 6010D 10/22/20 11:37 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OJ22043 EPA 8260D 1O/22/20 15:17 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.1 1 5.00 103 % 75-125 OJ22043 EPA 826OD 10122120 15:17 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:CD16623-02 Received: 10/16/20 13:00 Matrix: Surface Water Sampled:10/15/20 13:43 Work Order: CD16623 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 21:45 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 0125009 EPA 8260D 10/25/20 21:45 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 0125009 EPA 8260D 10/25/20 21:45 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 21:45 REF 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 21:45 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 21:45 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 21:45 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 21:45 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 0125009 EPA 8260D 10/25/20 21:45 REF QV-01 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 21:45 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 21:45 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 0125009 EPA 8260D 10/25/20 21:45 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 21:45 REF 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 0125009 EPA 8260D 10/25/20 21:45 REF 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 0125009 EPA 8260D 10/25/20 21:45 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 0125009 EPA 8260D 10/25/20 21:45 REF Acetone [67-64-1]A 10 u ug/L 1 10 20 0125009 EPA 8260D 10/25/20 21:45 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 0125009 EPA 8260D 10/25/20 21:45 REF Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 21:45 REF QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 0125009 EPA 8260D 10/25/20 21:45 REF Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 21:45 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 21:45 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 0125009 EPA 8260D 10/25/20 21:45 REF Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 21:45 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 21:45 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 21:45 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 0125009 EPA 8260D 10/25/20 21:45 REF Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 0125009 EPA 8260D 10/25/20 21:45 REF Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 0125009 EPA 8260D 10/25/20 21:45 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW2 Lab Sample ID:CD16623-02 Received: 10/16/20 13:00 Matrix: Surface Water Sampled:10/15/20 13:43 Work Order: CD16623 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 53 1 50.0 106 % 53-136 OJ25009 EPA 826OD 10125120 21:45 REF Dibromofluoromethane 57 1 50.0 113 % 67-129 OJ25009 EPA 826OD 10125120 21:45 REF Toluene-d8 54 1 50.0 107 % 59-134 OJ25009 EPA 626OD 10125120 21:45 REF Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OJ26024 EPA 6020B 11/04/20 16:39 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OJ20025 EPA 6010D 10/22/20 11:21 JDH Barium [7440-39-3]^ 48.5 ug/L 1 1.10 10.0 O120025 EPA 6010D 10/22/20 11:21 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OJ20025 EPA 6010D 10/22/20 11:21 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OJ20025 EPA 6010D 10/22/20 11:21 JDH Chromium [7440-47-3]^ 1.64 J ug/L 1 1.40 10.0 O120025 EPA 6010D 10/22/20 11:21 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OJ20025 EPA 6010D 1O/22/20 11:21 JDH Copper[7440-50-8]^ 4.03 J ug/L 1 1.60 10.0 O120025 EPA 6010D 10/22/20 11:21 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OJ20025 EPA 6010D 1O/22/20 11:21 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OJ20025 EPA 6010D 1O/22/20 11:21 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OJ20025 EPA 6010D 10/22/20 11:21 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OJ20025 EPA 6010D 10/22/20 11:21 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OJ26024 EPA 6020B 11/04/20 16:39 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OJ20025 EPA 6010D 10/22/20 11:21 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OJ20025 EPA 6010D 10/22/20 11:21 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes 1,4-Dioxane [123-91-1]^ 1.2 J ug/L 1 0.80 2.0 O122043 EPA 8260D 1O/22/20 15:42 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.4 1 5.00 108 % 75-125 OJ22043 EPA 826OD 1012212015:42 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:CD16623-03 Received: 10/16/20 13:00 Matrix: Surface Water Sampled:10/15/20 14:49 Work Order: CD16623 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 22:15 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 0125009 EPA 8260D 10/25/20 22:15 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 0125009 EPA 8260D 10/25/20 22:15 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 22:15 REF 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 22:15 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 22:15 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 22:15 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 22:15 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 0125009 EPA 8260D 10/25/20 22:15 REF QV-01 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 22:15 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 22:15 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 0125009 EPA 8260D 10/25/20 22:15 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 22:15 REF 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 0125009 EPA 8260D 10/25/20 22:15 REF 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 0125009 EPA 8260D 10/25/20 22:15 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 0125009 EPA 8260D 10/25/20 22:15 REF Acetone [67-64-1]A 10 u ug/L 1 10 20 0125009 EPA 8260D 10/25/20 22:15 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 0125009 EPA 8260D 10/25/20 22:15 REF Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 22:15 REF QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 0125009 EPA 8260D 10/25/20 22:15 REF Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 22:15 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 22:15 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 0125009 EPA 8260D 10/25/20 22:15 REF Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 22:15 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 22:15 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 22:15 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 0125009 EPA 8260D 10/25/20 22:15 REF Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 0125009 EPA 8260D 10/25/20 22:15 REF Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 0125009 EPA 8260D 10/25/20 22:15 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW3 Lab Sample ID:CD16623-03 Received: 10/16/20 13:00 Matrix: Surface Water Sampled:10/15/20 14:49 Work Order: CD16623 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 52 1 50.0 104 % 53-136 OJ25009 EPA 826OD 10125120 22:15 REF Dibromofluoromethane 54 1 50.0 109 % 67-129 OJ25009 EPA 826OD 10125120 22:15 REF Toluene-d8 54 1 50.0 107 % 59-134 OJ25009 EPA 626OD 10125120 22:15 REF Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OJ26024 EPA 6020B 11/04/20 16:44 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OJ20025 EPA 6010D 10/22/20 11:24 JDH Barium [7440-39-3]^ 47.3 ug/L 1 1.10 10.0 O120025 EPA 6010D 10/22/20 11:24 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OJ20025 EPA 6010D 10/22/20 11:24 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OJ20025 EPA 6010D 10/22/20 11:24 JDH Chromium [7440-47-3]^ 2.85 J ug/L 1 1.40 10.0 O120025 EPA 6010D 10/22/20 11:24 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OJ20025 EPA 6010D 1O/22/20 11:24 JDH Copper[7440-50-8]^ 4.33 J ug/L 1 1.60 10.0 O120025 EPA 6010D 10/22/20 11:24 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OJ20025 EPA 6010D 1O/22/20 11:24 JDH Nickel[7440-02-O]^ 3.50 J ug/L 1 2.20 10.0 O120025 EPA 6010D 1O/22/20 11:24 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OJ20025 EPA 6010D 10/22/20 11:24 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OJ20025 EPA 6010D 10/22/20 11:24 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OJ26024 EPA 6020B 11/04/20 16:44 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OJ20025 EPA 6010D 10/22/20 11:24 JDH Zinc[744O-66-6]^ 14.5 ug/L 1 4.40 10.0 O120025 EPA 6010D 10/22/20 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 By Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OJ22043 EPA 8260D 1O/22/20 13:11 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.5 1 5.00 110 % 75-125 OJ22043 EPA 826OD 1012212013:11 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:CD16623-04 Received: 10/16/20 13:00 Matrix: Surface Water Sampled:10/15/20 14:10 Work Order: CD16623 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 22:45 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 0125009 EPA 8260D 10/25/20 22:45 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 0125009 EPA 8260D 10/25/20 22:45 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 22:45 REF 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 22:45 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 22:45 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 22:45 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 22:45 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 0125009 EPA 8260D 10/25/20 22:45 REF QV-01 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 22:45 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 22:45 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 0125009 EPA 8260D 10/25/20 22:45 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 22:45 REF 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 0125009 EPA 8260D 10/25/20 22:45 REF 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 0125009 EPA 8260D 10/25/20 22:45 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 0125009 EPA 8260D 10/25/20 22:45 REF Acetone [67-64-1]A 10 u ug/L 1 10 20 0125009 EPA 8260D 10/25/20 22:45 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 0125009 EPA 8260D 10/25/20 22:45 REF Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 22:45 REF QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 0125009 EPA 8260D 10/25/20 22:45 REF Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Chlorobenzene[108-90-7]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 22:45 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 22:45 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Ethylbenzene[100-41-4]A 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 0125009 EPA 8260D 10/25/20 22:45 REF Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 22:45 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 22:45 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 22:45 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 0125009 EPA 8260D 10/25/20 22:45 REF Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 0125009 EPA 8260D 10/25/20 22:45 REF Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 0125009 EPA 8260D 10/25/20 22:45 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW4 Lab Sample ID:CD16623-04 Received: 10/16/20 13:00 Matrix: Surface Water Sampled:10/15/20 14:10 Work Order: CD16623 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 53 1 50.0 106 % 53-136 OJ25009 EPA 826OD 10125120 22:45 REF Dibromofluoromethane 57 1 50.0 115 % 67-129 OJ25009 EPA 826OD 10125120 22:45 REF Toluene-d8 53 1 50.0 105 % 59-134 OJ25009 EPA 626OD 10125120 22:45 REF Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OJ26024 EPA 6020B 11/04/20 16:48 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OJ20025 EPA 6010D 10/22/20 11:34 JDH Barium [7440-39-3]^ 52.0 ug/L 1 1.10 10.0 O120025 EPA 6010D 10/22/20 11:34 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OJ20025 EPA 6010D 10/22/20 11:34 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OJ20025 EPA 6010D 10/22/20 11:34 JDH Chromium [7440-47-3]^ 2.29 J ug/L 1 1.40 10.0 O120025 EPA 6010D 10/22/20 11:34 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OJ20025 EPA 6010D 1O/22/20 11:34 JDH Copper[7440-50-8]^ 4.59 J ug/L 1 1.60 10.0 O120025 EPA 6010D 10/22/20 11:34 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OJ20025 EPA 6010D 1O/22/20 11:34 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OJ20025 EPA 6010D 1O/22/20 11:34 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OJ20025 EPA 6010D 10/22/20 11:34 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OJ20025 EPA 6010D 10/22/20 11:34 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OJ26024 EPA 6020B 11/04/20 16:48 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OJ20025 EPA 6010D 10/22/20 11:34 JDH Zinc[744O-66-6]^ 10.3 ug/L 1 4.40 10.0 O120025 EPA 6010D 10/22/20 11:34 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OJ22043 EPA 8260D 1O/22/20 16:08 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.4 1 5.00 107 % 75-125 OJ22043 EPA 826OD 10122120 16:08 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:CD16623-05 Received: 10/16/20 13:00 Matrix: Water Sampled:10/15/20 13:43 Work Order: CD16623 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 Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 23:15 REF 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 0125009 EPA 8260D 10/25/20 23:15 REF 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 0125009 EPA 8260D 10/25/20 23:15 REF 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 23:15 REF 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 23:15 REF 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 23:15 REF 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 23:15 REF 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 23:15 REF 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 0125009 EPA 8260D 10/25/20 23:15 REF QV-01 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 23:15 REF 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 23:15 REF 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 0125009 EPA 8260D 10/25/20 23:15 REF 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 0125009 EPA 8260D 10/25/20 23:15 REF 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 0125009 EPA 8260D 10/25/20 23:15 REF 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 0125009 EPA 8260D 10/25/20 23:15 REF 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 0125009 EPA 8260D 10/25/20 23:15 REF Acetone [67-64-1]A 10 u ug/L 1 10 20 0125009 EPA 8260D 10/25/20 23:15 REF Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 0125009 EPA 8260D 10/25/20 23:15 REF Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 23:15 REF QV-01 Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 0125009 EPA 8260D 10/25/20 23:15 REF Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 23:15 REF cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 23:15 REF cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 0125009 EPA 8260D 10/25/20 23:15 REF Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Styrene [100-42-5]A 0.11 Ll ug/L 1 0.11 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 0125009 EPA 8260D 10/25/20 23:15 REF trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 0125009 EPA 8260D 10/25/20 23:15 REF trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 23:15 REF trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 0125009 EPA 8260D 10/25/20 23:15 REF Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 0125009 EPA 8260D 10/25/20 23:15 REF Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 0125009 EPA 8260D 10/25/20 23:15 REF FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 Of 24 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-Trip Blank Lab Sample ID:CD16623-05 Received: 10/16/20 13:00 Matrix: Water Sampled:10/15/20 13:43 Work Order: CD16623 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 52 1 50.0 105 % 53-136 OJ25009 EPA 826OD 10125120 23:15 REF Dibromofluoromethane 56 1 50.0 112 % 67-129 OJ25009 EPA 826OD 10125120 23:15 REF Toluene-d8 52 1 50.0 105 % 59-134 OJ25009 EPA 626OD 10125120 23:15 REF Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL POLL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OJ22043 EPA 8260D 1O/22/20 10:39 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffy Notes Toluene-d8 5.4 1 5.00 109 % 75-125 OJ22043 EPA 826OD 10122120 1029 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 OJ25009 - EPA 5030B MS Blank (0325009-BLK1) Prepared: 10/25/2020 10:52 Analyzed: 10/25/2020 16:15 Analvte Result Flaq POL Units 1, 1, 1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 54 u9/L 50.0 108 53-136 Dibromofluoromethane 50 u9/L 50.0 100 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 OJ25009 - EPA 5030B MS - Continued Blank (0325009-BLK1) Continued Prepared: 10/25/2020 10:52 Analyzed: 10/25/2020 16:15 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 55 u9/L 50.0 110 59-134 LCS (0725009-BS3) Prepared: 10/25/2020 10:52 Analyzed: 10/25/2020 14:15 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 110 75-133 Benzene 17 1.0 ug/L 20.0 86 80-134 Chlorobenzene 19 1.0 ug/L 20.0 95 80-120 Toluene 19 1.0 ug/L 20.0 93 71-120 Trichloroethene 19 1.0 ug/L 20.0 96 74-120 Matrix Spike (0325009-MS1) Prepared: 10/25/2020 10:52 Analyzed: 10/25/2020 14:45 Source: CD16047-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 24 1.0 ug/L 20.0 0.21 U 119 75-133 Benzene 17 1.0 ug/L 20.0 0.15 U 87 80-134 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 98 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 97 71-120 Trichloroethene 20 1.0 ug/L 20.0 0.15 U 100 74-120 Matrix Spike Dup (0325009-MSD1) Prepared: 10/25/2020 10:52 Analyzed: 10/25/2020 15:15 Source: CD16047-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 32 1.0 ug/L 20.0 0.21 U 158 75-133 28 20 QM-07, QM-11 Benzene 18 1.0 ug/L 20.0 0.15 U 92 80-134 6 17 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 101 80-120 3 16 Toluene 20 1.0 ug/L 20.0 0.14 U 101 71-120 4 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 104 74-120 4 22 Batch OJ26029 - EPA 5030B MS Blank (0326029-BLK3) Prepared: 10/26/2020 16:09 Analyzed: 10/26/2020 19:53 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 Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 16 Of 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OJ26029 - EPA 5030B MS - Continued Blank (0326029-BLK1) Continued Prepared: 10/26/2020 16:09 Analyzed: 10/26/2020 19:53 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L 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 52 ug/L 50.0 104 53-136 Dibromofluoromethane 58 u91L 50.0 117 67-129 Toluene-d8 53 u91L 50.0 106 59-134 LCS (0326029-BS1) Prepared: 10/26/2020 16:09 Analyzed: 10/26/2020 17:52 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 30 1.0 ug/L 20.0 149 75-133 QL-02 Benzene 17 1.0 ug/L 20.0 84 80-134 Chlorobenzene 18 1.0 ug/L 20.0 89 80-120 Toluene 18 1.0 ug/L 20.0 89 71-120 Trichloroethene 19 1.0 ug/L 20.0 93 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 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OJ26029 - EPA 5030B MS - Continued Matrix Spike (0326029-MS1) Prepared: 10/26/2020 16:09 Analyzed: 10/26/2020 18:23 Source: CD17278-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 32 1.0 ug/L 20.0 0.21 U 162 75-133 QM-07 Benzene 19 1.0 ug/L 20.0 0.15 U 96 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 97 80-120 Toluene 20 1.0 ug/L 20.0 0.14 U 101 71-120 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 107 74-120 Matrix Spike Dup (0]26029-MSD1) Prepared: 10/26/2020 16:09 Analyzed: 10/26/2020 18:53 Source: CD17278-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 28 1.0 ug/L 20.0 0.21 U 139 75-133 16 20 QM-07 Benzene 16 1.0 ug/L 20.0 0.15 U 79 80-134 19 17 QM-07, QM-11 Chlorobenzene 17 1.0 ug/L 20.0 0.17 U 84 80-120 14 16 Toluene 17 1.0 ug/L 20.0 0.14 U 84 71-120 19 17 QM-11 Trichloroethene 17 1.0 ug/L 20.0 0.15 U 85 74-120 23 22 QM-11 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OJ20025 - EPA 3005A Blank (0320025-BLK3) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:39 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 (0720025-BS1) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:46 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 181 10.0 ug/L 200 91 80-120 Barium 201 10.0 ug/L 200 101 80-120 Beryllium 19.0 1.00 ug/L 20.0 95 80-120 Cadmium 18.9 1.00 ug/L 20.0 95 80-120 Chromium 193 10.0 ug/L 200 96 80-120 Cobalt 191 10.0 ug/L 200 95 80-120 Copper 191 10.0 ug/L 200 96 80-120 Lead 190 10.0 ug/L 200 95 80-120 Nickel 200 10.0 ug/L 200 100 80-120 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 OJ20025 - EPA 3OO5A - Continued LCS (O]20025-BS1) Continued Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:46 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Selenium 190 10.0 ug/L 200 95 80-120 Silver 197 10.0 ug/L 200 98 80-120 Vanadium 190 10.0 ug/L 200 95 80-120 Zinc 199 10.0 ug/L 200 100 80-120 Matrix Spike (0720025-MS3) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:48 Source: CD16621-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 116 10.0 ug/L 200 7.60 U 58 75-125 QM-07 Barium 908 10.0 ug/L 200 659 124 75-125 Beryllium 20.5 1.00 ug/L 20.0 0.160 U 102 75-125 Cadmium 16.6 1.00 ug/L 20.0 0.360 U 83 75-125 Chromium 208 10.0 ug/L 200 4.94 102 75-125 Cobalt 208 10.0 ug/L 200 10.3 99 75-125 Copper 196 10.0 ug/L 200 1.60 U 98 75-125 Lead 199 10.0 ug/L 200 3.10 U 99 75-125 Nickel 240 10.0 ug/L 200 31.1 104 75-125 Selenium 194 10.0 ug/L 200 6.20 U 97 75-125 Silver 212 10.0 ug/L 200 1.90 U 106 75-125 Vanadium 197 10.0 ug/L 200 1.40 U 98 75-125 Zinc 207 10.0 ug/L 200 25.6 91 75-125 Matrix Spike Dup (0320025-MSD1) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:51 Source: CD16621-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 116 10.0 ug/L 200 7.60 U 58 75-125 0.6 20 QM-07 Barium 907 10.0 ug/L 200 659 124 75-125 0.05 20 Beryllium 20.4 1.00 ug/L 20.0 0.160 U 102 75-125 0.5 20 Cadmium 16.5 1.00 ug/L 20.0 0.360 U 83 75-125 0.8 20 Chromium 287 10.0 ug/L 200 4.94 141 75-125 32 20 QM-07, QM-11 Cobalt 209 10.0 ug/L 200 10.3 99 75-125 0.3 20 Copper 196 10.0 ug/L 200 1.60 U 98 75-125 0.4 20 Lead 198 10.0 ug/L 200 3.10 U 99 75-125 0.7 20 Nickel 287 10.0 ug/L 200 31.1 128 75-125 18 20 QM-07 Selenium 181 10.0 ug/L 200 6.20 U 90 75-125 7 20 Silver 211 10.0 ug/L 200 1.90 U 106 75-125 0.4 20 Vanadium 196 10.0 ug/L 200 1.40 U 98 75-125 0.6 20 Zinc 209 10.0 ug/L 200 25.6 92 75-125 0.8 20 Post Spike (O]20025-PSI) Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:53 Source: CD16621-01 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits RPD Arsenic 0.130 0.0100 mg/L 0.200 -0.0831 65 80-120 Barium 0.898 0.0100 mg/L 0.200 0.659 120 80-120 Beryllium 0.0205 0.00100 mg/L 0.0200 -0.000138 102 80-120 Cadmium 0.0167 0.00100 mg/L 0.0200 -0.00327 84 80-120 Chromium 0.208 0.0100 mg/L 0.200 0.00494 102 80-120 RPD Limit Notes QM-08 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 19 of 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OJ20025 - EPA 3OO5A - Continued Post Spike (OJ20025-PS1) Continued Prepared: 10/20/2020 15:35 Analyzed: 10/22/2020 10:53 Source: CD16621-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cobalt 0.207 0.0100 mg/L 0.200 0.0103 98 80-120 Copper 0.196 0.0100 mg/L 0.200 -0.0176 98 80-120 Lead 0.196 0.0100 mg/L 0.200 9.88E-5 98 80-120 Nickel 0.237 0.0100 mg/L 0.200 0.0311 103 80-120 Selenium 0.182 0.0100 mg/L 0.200 -0.0297 91 80-120 Silver 0.217 0.0100 mg/L 0.200 -0.00215 109 80-120 Vanadium 0.197 0.0100 mg/L 0.200 -0.0115 99 80-120 Zinc 0.232 0.0100 mg/L 0.200 0.0256 103 80-120 Batch OJ26024 - EPA 3OO5A Blank (0326024-BLK3) Prepared: 10/26/2020 12:28 Analyzed: 11/04/2020 14:57 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (0326024-BSI) Prepared: 10/26/2020 12:28 Analyzed: 11/04/2020 15:01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 22.7 1.00 ug/L 20.0 114 80-120 Selenium 21.5 1.00 ug/L 20.0 107 80-120 Thallium 23.1 1.00 ug/L 20.0 115 80-120 Matrix Spike (OJ26024-MS3) Prepared: 10/26/2020 12:28 Analyzed: 11/04/2020 15:05 Source: CD16622-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 43.5 2.00 ug/L 40.0 0.740 U 109 75-125 Selenium 40.7 2.00 ug/L 40.0 1.82 U 102 75-125 Thallium 42.1 2.00 ug/L 40.0 0.220 U 105 75-125 Matrix Spike Dup (O326024-MSDI) Prepared: 10/26/2020 12:28 Analyzed: 11/04/2020 15:09 Source: CD16622-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 44.2 2.00 ug/L 40.0 0.740 U 110 75-125 2 20 Selenium 43.5 2.00 ug/L 40.0 1.82 U 109 75-125 7 20 Thallium 42.7 2.00 ug/L 40.0 0.220 U 107 75-125 1 20 Post Spike (OJ26024-PSI) Prepared: 10/26/2020 12:28 Analyzed: 11/04/2020 15:14 Source: CD16622-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 26.0 1.00 ug/L 20.0 -0.00824 130 75-125 QM-08 Selenium 24.9 1.00 ug/L 20.0 0.192 123 75-125 Thallium 25.1 1.00 ug/L 20.0 0.0231 125 75-125 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OJ22043 - EPA 5030E MS FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 20 Of 24 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Blank (0322043-BLK3) Prepared: 10/22/2020 00:00 Analyzed: 10/22/2020 09:43 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 5.3 ug/L 5.00 106 75-125 LCS (O]22043-BS1) Prepared: 10/22/2020 00:00 Analyzed: 10/22/2020 09:18 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 23 2.0 ug/L 25.0 92 80-133 Toluene-d8 5.0 ug/L 5.00 100 75-125 Matrix Spike (0322043-MS1) Prepared: 10/22/2020 00:00 Analyzed: 10/22/2020 18:39 Source: CD16623-03 Spike Source %REC RPD Analvte Result Flag Q Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 98 80-133 Toluene-d8 5.2 ug/L 5.00 103 75-125 Matrix Spike Dup (0322043-MSD1) Prepared: 10/22/2020 00:00 Analyzed: 10/22/2020 19:04 Source: CD16623-03 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 0.80 U 98 80-133 0.7 19 Toluene-d8 5.4 ug/L 5.00 108 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. QL-02 The associated laboratory control sample exhibited high bias; since the result is ND, there is no impact. QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. QM-08 Post -digestion spike did not meet method requirements due to confirmed matrix effects (dilution test). QM-11 Precision between duplicate matrix spikes of the same sample was outside acceptance limits. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 22 of 24 3 a 3 m a c9 a b d 4 o m m c m m P. a m n m a 9 3 3 m m ro C .Z r :m Ja T t° a n m as m co rr n _ Q C n N n 0 a m w m d 3 2 a� c 6' w m ro t r CD L&A 3 3 3 a ti m a m zW 0 o Q o @ 3 CD ea oo aaQ �i, In �n in a ► a r = w z n m' w w v ,�4 n 'V w Z N o r j 0 N P p sr J. o NO G s oz JJz� 3 n t%i Na n o C d o r m ,.a 'm `r-L 0 Z ' (n _ m �_� �� m a a $. Vm iI rn _ Q @ O Z T1 N N r A -4 V V V _ ti > 0 v O n X X X X X 8260D i4PPendix 1,82800 SIM 10 v rn " X X >C Ag.AS,Be,Be,Cd,Co,Cr Cu,N1,PN,SO,Se, Se,TI,v,In � a v w z7 D � � 0 V n o C 7] (7 r o µ $ Q O 7 tD F y N 0 [y O N Q 0 w u vp C z a9 3 o ro ra CD 0)d� (n m m 7 X O' rp m (n d N W (' 4 CL �. Q a) G Page 23 of 24 Sample Preservation Verification ENCO Cary ENCO Work Order: CD16623 Project: White Street LF-Phase 1,11.111 SW Client: Golder Associates, Inc. (00007) Project #: 1668421,107 Logged In: 16-Oct-20 14:59 I Logged By: Rachel Ann_ycknish Preservation Check Performed By: Date/Time: CD16623-01 Cont Type A 250mLP+HNO3 CD16623-02 Cont Type A 25bmLP+HNO3 CD16623-03 s (pH) pH Checked / PH Adjusted DatelTime Reagent Used/Comments irement In Control Adjusted <2 YbN/NA Y>'NINA ", . pH Adjusted irement In Control <2 Y 11 N 1 NA Y lrNil NA Adjusted Reagent Used/Comments Gant T e Type res pH) Requirement pH Checked / In Control pH Adjusted DatefTi€ne Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y N / NA YIN NA CD16623-04 Cont Type Pres (PH) Requirement . In Control pH Checked /FYJ Adjusted DatelTime Adjusted Reagent Use A 250mLP+HNO3 <2 i Y N! NA/ rh i NA Rea ent Name ID 1 z pH Strip ID: PH Strips COF0555 Rea ent Name ID 3 4 Reagent Name ID 5 6 C:lelmntlPrintlwko_PreservationCheck. rpt Page 24 of 24 WORK ORDER Printed: 10/19/2020 9:00:40AM CD16623 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: 1668421.107 PO #: Report To: Invoice To: Golder Associates, Inc. (G0007) City of Greensboro (CI034) Dusty Reedy Richard Lovett 5B Oak Branch Drive 401 Patton Ave Greensboro, NC 27407 Greensboro, NC 27406 Phone: (336) 852-4903 Phone :(336) 373-4188 Fax: (336) 852-4904 Fax: Received By: David E. Wilder Logged In By: Rachel Ann Yonish Date Received: 16-Oct-20 13:00 Date Logged In: 16-Oct-20 14:59 Work Order Comments: C-2177 received at 1.4°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Temperature Corrected Y Y Y Page 1 of 1 WORK ORDER Printed: 10/19/2020 8:55:24AM CD17113 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase I,II Project Number: 1668421.106 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 Logged In By: Rachel Ann Yonish Date Received: 16-Oct-20 14:45 Date Logged In: 16-Oct-20 16:09 Work Order Comments: C-2204 received at 0.7°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Temperature Corrected Y Y 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 — Phases I & II Project Reference Number. 19131339.102 Sampling Event Date: October 13 - 15, 2020 Review Date: November 24, 2020 Report #: CD16622, CD17113 4 GOLDER Initials: TM Initials: 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 Inc. has reviewed the laboratory certificates of analysis, chain -of -custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: • Region III Modifications to Functional Guidelines for Organic Data Review Multi -Media, Multi -Concentration, September 1994; • Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and • Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility/C & D List NC Appendix I VOAs and RCRA Metals NC Appendix I + Detects x NC Appendix II + Detects NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW TM COC was properly signed by all parties. TM Correct project name and number are on the form. ➢ Incorrect project number on COC. Should be 19131339.102 TM Sample receipt condition at laboratory was acceptable. TM Each sample and blank submitted for analysis appears in the report. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 3 2.0 SAMPLE HOLDING TIMES 4 GOLDER TM Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). Review Criteria Method Analytes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature re uirements SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW TM Laboratory analyzed at least one internal blank for each method, where applicable. TM Laboratory blank is interference -free. TM Surrogate recoveries are provided for each analytical method, where applicable. TM Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). TM MS/MSD/LCS data results are provided for each analytical method. TM MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). y The 8260D LCS exhibited a high bias for Bromoform and Isobutyl alcohol; however, these analytes were not detected in the associated samples. The Continuing Calibration Verification (CCV) exhibited a high bias for Bromoform and Carbon tetrachloride; however, these analytes were not detected in the associated samples. The spike recovery for Trichloroethene was outside control limits for the MSD samples. The QC batch was approved based on acceptable LCS recovery of this analyte. The 8270E CCV exhibited a high bias for 2-Acetylaminofluorene; however, this analyte was not detected in the associated samples. The 8081 B spike recovery for 4,4'-DDT was outside control limits for the MS and MSD samples. The QC batch was approved based on acceptable LCS recovery of this analyte. The 8151A precision between duplicate spikes of 2,4-D exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of this analyte. The spike recoveries for Antimony, Arsenic, Chromium, and Nickel were outside control limits for the MS, MSD, and/or Post Digestion spike samples, the precision between duplicate spikes of Chromium exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these elements. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW G Q L D E R Page 3 of 3 y The spike recoveries for Cyanide and Sulfide were outside control limits for the MS and/or MSD samples. The QC batches were approved based on acceptable LCS recovery of these analytes. 4.0 ANALYTE LISTS/METHODS TM The proper number of constituents are present for each analyte list as identified above (including detects where applicable). TM Proper EPA SW-846 analytical methods were used for analysis. TM All analytical reporting associated with the event was performed by the contracted lab TM Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been `flagged' with a `B' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 1 OX for commonly detected laboratory contaminants -acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. TM It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. Y Antimony and Thallium: all locations (2x) TM The report provides the reporting limit for each constituent TM The results were reported at or below their proper reporting limits (i.e. at or below standards at MDLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. TM No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Interim Maximum Allowable Concentrations (IMACs) or surface water standards in wells or field/equipment/trip blanks or above applicable Surface Water Standards for surface water points. ➢ Vanadium (NC IMAC= 0.3 ug/L) • MW-13 @ 3.56 ug/L (J) TM No quantifiable inorganic or organic constituents were detected in a well or surface water point at concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). TM Other report issues/Communications with laboratory/etc.: � GOLDER golder.com