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Home My WebLink About4103_Guilford_WhiteStreet_PhaseI_MSWLF_Oct21GW_FID1646800_20220301Electronic Data - Email CD (data loaded: Yes 1 No) DoGEvent #: C DENR I IEnvironmental Monitoring Division of Waste Management - Solid Waste Reporting Form Notice: This form and any information attached to it are "Public Records" as defined in INC General Statute 132-1. As such, these documents are available for inspection and examination by any person upon request (NC General Statute 132-6) Instructions: • Prepare one form for each individually monitored unit. Please type or print legibly. • Attach a notification table with values that attain or exceed NC 2L groundwater standards or NC 2B surface water standards. The notification must include a preliminary analysis of the cause and significance of each value. (e.g naturally occurring. off -site source, pre-existing condition, etc.}. • Attach a notification lable of any groundwater or surface water values that equal or exceed the reporting limits. Attach a notification table of any methane gas values that attain or exceed explosive gas levels, This Includes any structures on or nearby the facility (NCAC 13B .1629 (4)(a)(i). Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit. NCDENR-DYVM, Solid Waste Section, 1646 Mail Service Center, Raleigh, NC 27699-1646. Solid Waste Monitoring Data Submittal Information Name of entity submitting data (laboratory, consultant, facility owner): Golder Associates i Inc. on behalf of City of Greensboro Meld Operations Department Contact for questions about data formatting. Include data preparer's name, telephone number and E-malt address: Name. David Y_ Reedy 11, PG Phone; (336) 852.4903 E-mail: dreedy[dgolder.com NC Landfill Rule: Actual sampling dates (e.g,, Fatality name: Facility Address: Facility Permit # (.0500 or .1600) October 20-24, 2006) White Street Landfill - Phase 1 2503 White 5t, Greensboro, NC 27405 41-03 1600 October 13.14, 2021 and November 23, 2021 Environmental Status: (Check all that apply) ❑ Initial/Background Monitoring 0 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 manitorinq data Methane gas monitoring data Corrective action data (specify) Other(specify) Notification attached? No- No groundwater or surface water standards were exceeded. X Yes, a notification of values exceeding a groundwater or surface water standard is attached_ It includes a list of groundwater and surface water monitoring points, dates, analytical values, NC 2L groundwater standard, Ni 2B surface water standard or NC Solid Waste GWPS and preliminary analysis of the cause and significance of any concentration ❑ Yes, a notification of values exceeding an explosive methane gas limit is attached. it includes the methane monitoring points, dates, sample values and explosive methane gas limits. Certification _ To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct Furthermore, I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards- I am aware that there are significant penalties for making any false statement, representation, or certification Including the possibility of a fine and imprisonment. David Y. Reedy II. PG Senior Hydrogeologist fact - prase � Nam Title -/- 2r� Signature Date Gelder Associates NG, Inc., 513 Oak Branch Drive, Greensboro. NC 27407 Facility Representative Address C-2862 NC PE Firm License Number (If applicable effective May 1, 20119) Revised MOW (336) 852.4903 (Area Code) Telephone Number Affix NC Licensed/ Professional Geologist Seal GOLDER MEMBER OF WSP REPORT Second Semi -Annual 2021 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 19131339.104 March 1, 2022 March 1, 2022 19131339.104 Distribution List Richard Lovett, PG, Environmental Compliance Support Manager, Field Operations, City of Greensboro, 401 Patton Avenue, Greensboro, NC 27406. 336-373-4188. Richard.Lovett@greensboro-nc.gov Michael Szychowicz, Landfill Compliance Supervisor, Field Operations, City of Greensboro, 2503 White Street, Greensboro, NC 27405. 336-254-8096. Michael.Szychowicz@greensboro-nc.gov Jackie Drummond, Department of Environmental Quality, Division of Waste Management - Solid Waste Section, 2090 US Highway 70, Swannanoa, NC 28778. 828-296-4706. jaclynne.drummond@ncdenr.gov GOLDER �� MEMBER OF WSP March 1, 2022 19131339.104 Executive Summary On behalf of the City of Greensboro, Golder Associates NC, Inc., member of WSP (Golder), is submitting the enclosed Water Quality Monitoring Report, which documents the results of the October 13 - 14 and November 23, 2021 semi-annual compliance monitoring event for the Phase I facility at the White Street Landfill. Surface Water point SW-3 was sampled on November 23, 2021, as the location was inaccessible during the October event. Barium was detected at a quantifiable concentration above the NC 2L Standard in the sample from downgradient well 1-4 during this event, as it has been historically. Also, two North Carolina (NC) Appendix I volatile organic constituents (VOCs), benzene and 1,4-dichlorobenzene, were detected at quantifiable concentrations above their respective NC 2L Standards in the sample from downgradient well 1-1 at concentrations similar to previously reported concentrations. The constituent 1,4-dioxane was detected at downgradient wells 1-1, 1-2, 1-3, and 1-4 at quantifiable concentrations above the NC 2L Standard, as it has been previously; however, this parameter is not required by regulation or permit. In general, detected constituents and concentrations are consistent with historical data. No NC Appendix I constituents were reported in surface water samples above applicable surface water standards during the October and November 2021 events. 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 2022. GOLDER �� MEMBER OF WSP March 1, 2022 19131339.104 Table of Contents 1.0 INTRODUCTION.............................................................................................................................................1 1.1 Site Description and Background.........................................................................................................1 1.2 Compliance Monitoring History............................................................................................................1 1.3 Hydrogeologic Setting..........................................................................................................................2 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION.............................................................3 2.1 Visual Inspection Program...................................................................................................................3 2.2 Well Network and Groundwater Elevation Measurements..................................................................3 2.3 October and November 2021 Monitoring Events.................................................................................3 2.4 Laboratory Analysis Program...............................................................................................................4 3.0 LABORATORY AND FIELD QUALITY ASSURANCE / QUALITY CONTROL(QA/QC).............................4 4.0 DATA EVALUATION......................................................................................................................................4 4.1 North Carolina Groundwater and Surface Water Quality Standard Comparisons...............................5 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, 2021 Figure 2 Surface Water Location Map GOLDER �� MEMBER OF WSP March 1, 2022 19131339.104 APPENDICES Appendix A Groundwater and Surface Water Sampling Logs Appendix B October and November 2021 Groundwater Certificates -of -Analysis, Chain -of -Custody Forms and Laboratory Data Reviews GOLDER �� MEMBER OF WSP IV March 1, 2022 19131339.104 1.0 INTRODUCTION This report summarizes the monitoring results from the October 13 - 14 and November 23, 2021, groundwater and surface water sampling event at Phase I of the White Street Landfill in Greensboro, North Carolina (NC). The closed municipal solid waste (MSW) landfill is monitored in accordance with Title 15A of the North Carolina Administrative Code (NCAC) Subchapter 13B. Section 0.600. The facility is located in central Guilford County and is comprised of a closed, unlined MSW facility (Phase 1), an active unlined construction and demolition debris (C&D) over MSW facility (Phase II), an active Subtitle D MSW facility (Phase 111), and an active Type I compost facility. The facility is owned and operated by the City of Greensboro under Permit Nos. 41-03 and 41-12 issued by the NC Department of Environmental Quality (DEQ, formerly NC Department of Environment and Natural Resources). The northeastern portion of the landfill property is comprised of the Phase I and Phase 11 landfills, which are covered under Permit No. 41-03. The southwestern portion of the facility is comprised of the Phase 111, which is covered under permit No. 41-12. The water quality monitoring results for the Phase 11 and Phase III facilities are submitted under separate cover. 1.1 Site Description and Background The location of the facility is shown on the inlay on Figure 1. The White Street Landfill is located approximately 5 miles northeast of downtown Greensboro, NC in Guilford County. Part of the James River watershed, North Buffalo Creek flows from southwest to northeast along the northwestern border of the facility and then flows eastward, away from the facility near the northeastern end of the facility. The location of this surface water feature and its associated tributaries are shown on the inlay on Figure 1. As shown on Figure 1, topographic surface elevations at the facility range from approximately 700 feet above mean sea level (AMSL) to nearly 850 feet AMSL. The site is surrounded by wooded and agricultural properties to the northwest, residential properties to the south and southwest, and residential and wooded properties to the east. 1.2 Compliance Monitoring History Groundwater monitoring at the facility was initiated in 1994. The facility's approved monitoring network for the Phase I landfill is currently comprised of five groundwater monitoring wells, which monitor the uppermost aquifer beneath the facility. Monitoring well MW-13 is an upgradient background well for both the Phase I and the Phase II landfills. Monitoring wells 1-1, 1-2, 1-3, and 1-4 are downgradient compliance wells for the Phase I landfill. The monitoring well locations are shown on Figure 1. The monitoring parameters for Phase I groundwater samples are NC Appendix I volatile organic constituents (VOCs) and the eight Resource Conservation and Recovery Act (RCRA) metals; samples are collected semi-annually. The constituent 1,4-dioxane was also analyzed during this event per the May 29, 2018, NC DEQ memorandum. The facility's monitoring network also includes five surface water monitoring points, which are shared with the Phase II waste unit. Surface water monitoring points SW-1, SW-2, and SW-3 are upstream monitoring locations and SW-4 and SW-5 are downstream monitoring locations. Surface water point SW-1 is located along North Buffalo Creek, west of the facility, along Summit Avenue. Surface water point SW-2 is located west of the facility and collected from a tributary to North Buffalo Creek that flows from south to north. Surface water point SW-3 is located west of the facility, downstream of SW-1 and upstream of the confluence of North Buffalo Creek and the tributary from which SW-2 is sampled. Surface water point SW-4 is located downstream of the facility along North Buffalo Creek. Surface water point SW-5 is located within the facility's property, at the northern end of the GOLDER �� MEMBER OF WSP March 1, 2022 19131339.104 Phase II landfill off Rankin Mill Road. The locations of the surface water points are shown on Figure 2. Points SW-1, SW-2, SW-3, and SW-4 are also shared with the Phase III landfill's monitoring network. Surface water samples are analyzed for NC Appendix I list of constituents semi-annually. 1.3 Hydrogeologic Setting The White Street Landfill is located within the Carolina Slate Belt of the Piedmont Physiographic Province of NC (NCGS, 1985). Generally, the Carolina Slate Belt consists of Late Proterozoic to Cambrian volcanic and greenschist-facies, metasedimentary rocks intruded by plutonic suites (Butler and Secor, 1991). The site geology is characterized by a regional -scale felsic intrusive complex, which consists mainly of white to gray, fine- to coarse -grained, massive to foliated metamorphosed granitic rock and is also characterized by regional and small-scale Mesozoic diabase dikes. The uppermost groundwater beneath the facility is present in a shallow, unconfined aquifer comprised of saprolite and partially weathered rock (PWR). Groundwater occurs in undeveloped areas at depths of approximately 1 to 20 feet below ground surface. Depth to water measurements, obtained on April 27, 2021, are summarized in Table 1 and were used to prepare a groundwater surface contour map presented on Figure 1. As presented, the groundwater flow in the uppermost aquifer beneath the site is generally to the northwest toward North Buffalo Creek, which is located along the northwestern property boundary of the site. The groundwater surface contour map and interpreted flow directions are generally consistent with previously submitted groundwater contour maps and flow directions for this facility. Based on the October 2021 groundwater surface contour map, the hydraulic gradient in the shallow aquifer underlying the site, as measured along the conceptual flow paths shown on the contour map, was calculated to average 0.02 feet/foot. Groundwater velocities were calculated using a hydraulic conductivity of 2.61 X 10-4 centimeters per second (cm/s), which is the average of the hydraulic conductivities calculated for the hydrogeologic units present at the facility's Phase II and Phase III landfills. This average is based on slug test data by BPA Environmental & Engineering Inc. (Phase II) and G.N. Richardson & Associates (Phase III). Although no data is available for the Phase I landfill, it is assumed that the whole facility either share hydrogeologic units or have similar characteristics (S&ME, 2017). The estimated effective porosity of the shallow aquifer is expected to range from 0.20 (saprolite) to 0.09 (fractured rock). The effective porosity of saprolite was used in calculations to provide a conservative estimate of groundwater flow. Using the above values, the estimated rate of groundwater flow for the uppermost aquifer beneath the facility was calculated using the following modified Darcy equation: Vgw = KI/ne where Vgw = average linear velocity (feet/year), K = hydraulic conductivity (feet/year), i = horizontal hydraulic gradient, and ne = effective porosity. The average estimated linear groundwater flow velocity under the waste management unit is approximately 230 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 �� MEMBER OF WSP March 1, 2022 19131339.104 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION Field activities conducted as part of the October and November 2021 sampling events 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 Ieachate migration (i.e., leachate seeps), unexplained changes in soil characteristics, and any other change to the environment due to the waste management unit. During this compliance monitoring event, no physical indicators of a potential release were observed in the vicinity of the waste management areas by the sampling personnel. 2.2 Well Network and Groundwater Elevation Measurements The current network of groundwater monitoring wells at the Phase I landfill consists of one upgradient well (MW-13) and four downgradient wells (1-1, 1-2, 1-3, and 1-4). Available monitoring well construction information for the Phase I monitoring wells is summarized on Table 3, and the well locations are shown on Figure 1. The well locations were selected to yield groundwater samples representative of the conditions in the uppermost aquifer underlying the facility, and to monitor for potential releases from the landfill unit. Three upstream surface water monitoring points (SW-1, SW-2, and SW-3) and two downstream surface water monitoring points (SW-4 and SW-5) are also monitored. Depth -to -water measurements are recorded to the nearest 0.01 foot prior to initiating groundwater purging and sampling activities. The respective groundwater level elevations for this event are presented in Table 1. The historical water level data are also shown on this table. As presented, recent groundwater elevation data for the monitoring well network indicate that the hydraulic head level in the uppermost aquifer beneath the facility is fairly consistent, with temporal variation from the long-term average limited to approximately 5 - 20 feet (plus or minus) under normal conditions. 2.3 October and November 2021 Monitoring Events Personnel from Golder visited the facility from October 13 - 14, 2021 to purge and sample monitoring wells and to sample surface water monitoring points. Surface water monitoring point SW-3 was sampled on November 23, 2021, as access to the location could not be obtained during the October 2021 event. Monitoring wells were purged and sampled using the dedicated pumps at the facility following low -flow micropurge procedures. Measurements of temperature, pH, specific conductivity, turbidity, dissolved oxygen, and oxidation reduction potential were recorded on approximately 5-minute intervals, depending on the purge rate. In general, the purge rate for each well was matched to the yield of the monitoring well, as determined by continuously monitoring the depth to the water, up to a maximum purge rate of approximately 300 milliliters per minute. Purging was continued until stabilization was indicated by the water quality parameters. Prior to sampling, the laboratory -supplied sample containers were prepared. Each sample container was labeled with the sample identification number, sampling personnel, date and time of sample collection, project name and number, and requested chemical analyses. GOLDER FwsP March 1, 2022 19131339.104 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 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 and November 2021 groundwater and surface water samples were submitted to Environmental Conservation Laboratories, Inc. (ENCO) of Cary, NC under chain -of -custody control for analysis. Groundwater samples were analyzed for NC Appendix I VOCs, RCRA metals, and 1,4-dioxane. The Phase I and Phase II landfills share background monitoring well MW-13 and therefore, MW-13 was analyzed for Appendix I inorganic and VOCs plus mercury and 1,4-dioxane. Surface water samples were analyzed for NC Appendix I constituents and 1,4-dioxane. The samples were received at the laboratory in good condition and were properly preserved. 3.0 LABORATORY AND FIELD QUALITY ASSURANCE / QUALITY CONTROL (QA/QC) A duplicate sample was collected at Phase II well II-8 by Golder personnel as part of the October 2021 sampling event and is shared with the Phase I landfill for laboratory QA/QC. ENCO analyzed the duplicate sample for the NC Appendix II list of constituents. A laboratory -prepared trip blank accompanied the volatile sample containers to and from the laboratory. ENCO analyzed the trip blank for NC Appendix II VOCs. A field blank was collected for the Phase III landfill and was compared to the surface water samples, which are shared between the Phase I, Phase 11, and Phase III landfills. Copper was detected at an estimated concentration and acetone was detected at a quantifiable concentration in the field blank. The concentrations of copper in the samples from surface water sampling locations SW-1 and SW-4 are considered blank -qualified. Reviews of the laboratory data were performed by Golder personnel and are included in Appendix B. The same constituents were detected in the duplicate sample and the sample from II-8 except for chlorobenzene at a low concentration from the sample from II-8. Further, the concentrations from the duplicate sample and the sample from II-8 were generally similar. The results do not identify any irregularities related to laboratory analyses. There were no detections of RCRA metals or NC Appendix I constituents in the laboratory method blanks and therefore no additional data qualification was required. 4.0 DATA EVALUATION The results of the data evaluations are presented in the following sections. GOLDER .�� MEMaEROFwsP March 1, 2022 19131339.104 4.1 North Carolina Groundwater and Surface Water Quality Standard Comparisons As presented in Table 4, barium was detected at a quantifiable concentration above the practical quantitation limit (PQL) and the NC 2L Standard at monitoring well 1-4 during the October 2021, as it has been during recent events. Benzene and 1,4-dichlorobenzene were detected at quantifiable concentrations above their respective PQLs and NC 2L Standards in the sample from downgradient monitoring well 1-1, as they have been during recent events. No other NC Appendix I VOCs or RCRA metals were detected at concentrations above the applicable groundwater standards. 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 and November 2021 events. 5.0 CONCLUSIONS Based on the results summarized herein, the City of Greensboro will continue monitoring the uppermost aquifer beneath this facility in accordance with the requirements outlined in NCSWMR 0.600. The next sampling event is tentatively scheduled for April 2022. 6.0 REFERENCES Butler, J. Robert and Secor, Donald T., Jr., 1991, The Central Piedmont, in Horton, J. W., Jr., and Zullo,V.A., eds., The Geology of the Carolinas: The University of Tennessee Press, p. 59 78. NCGS (North Carolina Geologic Survey), 1985, Geologic Map of North Carolina. S&ME, Greensboro, NC, January 2017, White Street Landfill — Phase I, Permit No. 41-03, Post -Closure Monitoring, September 2016. GOLDER �� MEMBER OF WSP March 1. 2022 Signature Page Golder Associates NC, Inc. M, I I Oe Ulu David "Dusty" Y. Reedy II, PG Rachel P. Kirkman, PG Senior Lead Consultant/Geologist Senior Consultant/Geologist and Vice President Engineering Lic. No. C-28621Geology Lic. No. C-399 19131339.104 Golder Associates NC, Inc, is a licensed user of the Golder trademark, and an associated operating entity. Golder and the G logo are trademarks of Golder Associates Corporation. https: Bgolderassoclates. s h arepolnt, camis ltes1114193n C KKxKxlphese 104. 2nd so wqm 20211200 - dol No rsbtes1252.6nallphase V 19131339. i 04.001-r-nwa-phass_i, eoex Tables March 2022 19131339.104 TABLE 1 Summary of Historical Groundwater Elevation Data White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Well IDs MW-13 1-1 1-2 1-3 1-4 TOC Elevation 741.24 713.75 703.09 707.43 694.94 (ft AMSL) Date Elev DTW Elev DTW Elev DTW Elev DTW Elev DTW 10/14/98 718.61 22.69 765.90 10.21 763.28 5.30 750.43 14.22 753.76 6.07 03/25/99 722.11 19.19 759.43 16.68 748.54 20.04 749.06 15.59 750.97 8.86 09/22/99 721.32 19.98 767.74 8.37 752.25 16.33 752.13 12.52 757.61 2.22 03/27/00 722.49 18.81 769.13 6.98 764.37 4.21 752.90 11.75 757.61 2.22 09/13/00 722.37 18.93 767.81 8.30 763.98 4.60 752.22 12.43 757.53 2.30 03/12/01 721.80 19.50 768.57 7.54 763.87 4.71 752.61 12.04 757.61 2.22 09/13/01 720.98 20.32 766.28 9.83 763.65 4.93 751.12 13.53 755.74 4.09 03/07/02 719.08 22.22 767.92 8.19 763.73 4.85 752.40 12.25 757.66 2.17 09/18/02 722.10 19.20 766.67 9.44 763.54 5.04 751.49 13.16 757.69 2.14 04/15/03 724.59 16.71 769.48 6.63 764.20 4.38 753.62 11.03 757.97 1.86 10/15/03 722.82 18.48 767.97 8.14 764.12 4.46 752.22 12.43 757.89 1.94 03/24/04 722.42 18.88 768.55 7.56 763.94 4.64 752.10 12.55 757.70 2.13 09/22/14 722.56 18.74 767.47 8.64 763.80 4.78 751.90 12.75 757.84 1.99 05/10/05 722.14 19.16 766.30 9.81 763.73 4.85 754.89 9.76 757.60 2.23 10/11/05 719.72 21.58 765.57 10.54 763.53 5.05 750.66 13.99 754.33 5.50 04/24/06 720.25 21.05 767.17 8.94 763.92 4.66 751.62 13.03 757.34 2.49 10/20/06 721.69 19.61 766.28 9.83 763.42 5.16 750.83 13.82 756.23 3.60 04/10/07 721.61 19.63 705.35 8.40 698.20 4.89 694.67 12.76 692.55 2.39 09/25/07 717.41 23.83 702.67 11.08 696.89 6.20 691.35 16.08 686.94 8.00 05/02/08 722.96 18.28 707.14 6.61 698.49 4.60 695.80 11.63 692.74 2.20 12/05/08 -- -- 704.22 9.53 698.08 5.01 693.82 13.61 692.36 2.58 04/16/09 722.87 18.37 707.47 6.28 698.43 4.66 695.67 11.76 693.33 1.61 10/07/09 721.70 19.54 703.57 10.18 697.81 5.28 692.93 14.50 689.81 5.13 04/28/10 -- -- 705.36 8.39 698.32 4.77 694.41 13.02 692.80 2.14 10/05/10 721.13 20.11 705.09 8.66 697.84 5.25 693.48 13.95 692.31 2.63 05/10/11 722.33 18.91 706.23 7.52 697.43 5.66 695.15 12.28 693.03 1.91 10/06/11 719.26 21.98 703.25 10.50 697.68 5.41 693.29 14.14 691.55 3.39 04/16/12 721.34 19.90 704.67 9.08 698.39 4.70 694.54 12.89 693.08 1.86 10/24/12 719.13 22.11 703.55 10.20 697.84 5.25 693.11 14.32 692.19 2.75 04/24/13 721.96 19.28 706.10 7.65 698.28 4.81 694.43 13.00 692.94 2.00 09/09/13 721.66 19.58 705.21 8.54 697.94 5.15 693.29 14.14 691.85 3.09 04/22/14 723.00 18.24 707.24 6.51 698.81 4.28 695.49 11.94 693.22 1.72 10/01/14 717.90 23.34 701.58 12.17 696.98 6.11 690.96 16.47 687.74 7.20 04/07/15 720.64 20.60 705.92 7.83 698.06 5.03 694.42 13.01 692.93 2.01 10/06/15 723.23 18.01 705.30 8.45 697.88 5.21 693.42 14.01 692.37 2.57 04/18/16 721.94 19.30 706.34 7.41 698.54 4.55 694.36 13.07 692.79 2.15 09/26/16 721.03 20.21 702.87 10.88 697.68 5.41 691.94 15.49 689.87 5.07 04/25/17 722.07 19.17 707.28 6.47 698.95 4.14 696.82 10.61 693.62 1.32 10/16/17 720.11 21.13 704.53 9.22 697.64 5.45 692.16 15.27 690.25 4.69 04/16/18 722.80 18.44 707.47 6.28 698.88 4.21 695.81 11.62 693.48 1.46 10/16/18 723.22 18.02 704.43 9.32 695.58 7.51 695.64 11.79 692.40 2.54 04/08/19 723.66 17.58 705.26 8.49 696.24 6.85 695.31 12.12 692.07 2.87 10/07/19 720.82 20.42 701.29 12.46 694.92 8.17 691.89 15.54 689.95 4.99 04/20/20 722.86 18.38 704.35 9.40 696.55 6.54 694.90 12.53 692.04 2.90 10/13/20 724.25 16.99 705.19 8.56 696.99 6.10 695.84 11.59 691.99 2.95 04/27/21 723.49 17.75 704.90 8.85 698.99 4.10 694.47 12.96 691.85 3.09 10/12/21 722.58 18.66 703.80 9.95 698.46 4.63 693.48 13.95 691.54 3.40 MEAN 721.64 19.62 727.36 8.95 721.08 5.70 715.00 13.13 715.29 3.12 MAXIMUM 724.59 23.83 769.48 16.68 764.37 20.04 754.89 16.47 757.97 8.86 MINIMUM 717.41 16.71 701.29 6.28 694.92 4.10 690.96 9.76 686.94 1.32 Notes: 1. ft AMSL = feet above mean sea level. 2. -- = not measured or no data 3. TOC = top of casing 4. NI = not installed 5. MW = monitoring well 6. TOC 7. Well TOC survey conducted 2013-2014 by S&ME, Inc. for more accurate elevations. GILDER MEMBER OF WSP 1 of 1 March 2022 TABLE 2 Summary of Estimated Horizontal Flow Velocities White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 October 2021 Gradient Gradient Gradient Horizontal Effective Hydraulic Calculation Flow Segment Length Segment Gradient Porosity Conductivity Velocity Segment Direction (feet) Elevations feet) (ne) (K, cm/sec) (Vgw, feet/year) (feet)(i, i Northwest 1734 ---------690-------- 0.0173 0.02 2.61 E-04 234 iZ North -Northwest 1782 ---------690-------- 0.0168 0.02 2.61E-04 227 Average i Average VFW 0.0171 230 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 GQLDER MEM H£R OF WSP 1 of 1 March 2022 TABLE 3 Summary of Well Construction Information White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 Top -of - Monitoring Well Casing Well Well Screened Interval Geology of Screened Well Identification Northing Easting Date of Construction Elevation Depth Diameter (ft bgs) Interval Status (feet) (inches) (ft AMSL) 1-1 859779.0057 1785681.4037 07/14/89 713.75 24 2 14 24 PWR Active 1-2 860676.2436 1785350.8942 07/14/89 703.09 24 2 14 24 Sandy Silt Active 1-3 861283.9207 1785321.4743 07/14/89 707.43 24 2 14 24 Sandy Silt Active 1-4 861952.8335 1786141.9027 07/14/89 694.94 15 2 5 15 Sandy Silt Active MW-13 858763.9106 1783188.5206 07/14/89 741.24 34 2 19 34 Sandy Silt Active Notes: 1. 2. 3. 4. ft AMSL= feet above mean sea level ft bgs = feet below ground surface MW = monitoring well PWR = partially weathered rock Unless otherwise noted, well construction survey information, Water Quality Monitoring Reports and Water Quality Monitoring Plans provided by Survey Solutions S&ME. GOLDER MEMBER OF WSP 1of1 March 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Arsenic ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND NC 2L = 10 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND EPA MCL = 10 ug/L ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/02/08 2.0 -- 10 2.4 J ND ND ND ND ND ug/L 12/05/08 2.8 -- 10 ND ND ND ND ND ND ug/L 04/16/09 2.8 -- 10 ND 3.3 J ND 3.3 J 4.7 J ND ug/L 10/07/09 2.8 -- 10 ND ND ND ND 3.38 J ND ug/L 04/28/10 2.8 -- 10 ND ND ND ND ND ND ug/L 10/11/10 2.8 -- 10 ND ND 3.38 B ND 9.10 B -- ug/L 05/10/11 2.8 -- 10 ND 5.68 J 4.72 J ND ND ND ug/L 10/06/11 2.8 -- 10 ND ND ND ND ND ND ug/L 04/16/12 2.8 -- 10 ND 4.23 J ND ND ND ND ug/L 10/24/12 2.8 -- 10 3.75 J 4.25 J ND ND 5.15 J ND ug/L 04/24/13 2.8 -- 10 ND ND ND ND ND ND ug/L 09/10/13 5.4 -- 10 ND ND ND ND ND ND ug/L 04/22/14 5.4 -- 10 ND 7.71 J ND ND ND ND ug/L 10/06/14 5.4 -- 10 ND ND ND ND ND ND ug/L 04/07/15 6.8 -- 10 ND ND ND ND ND ND ug/L 10/07/15 6.8 -- 10 ND ND ND ND ND ND ug/L 04/26/16 6.8 -- 10 ND ND ND ND ND ND ug/L 09/28/16 6.8 -- 10 ND 7.07 J 9.93 J ND ND ND ug/L 04/27/17 6.8 -- 10 ND ND ND ND ND ND ug/L 10/17/17 6.8 -- 10 ND ND ND ND ND ND ug/L 04/16/18 6.8 -- 10 ND ND ND ND ND ND ug/L 10/18/18 7.6 10 -- ND ND ND ND ND ND ug/L 04/08/19 7.6 10 -- ND ND ND ND ND ND ug/L 10/09/19 7.6 10 -- ND ND ND ND ND ND ug/L 04/20/20 7.6 10 -- ND ND ND ND ND ND ug/L 10/13/20 7.6 10 -- ND ND ND ND ND ND ug/L 04/29/21 7.6 10 -- ND ND ND ND ND ND ug/L 10/12/21 7.6 10 -- ND ND ND ND ND ND Barium ug/L 03/01/00 -- -- 500 ND ND 690 ND 910 ND NC 2L = 700 ug/L ug/L 09/01/00 -- -- 500 ND ND ND ND 800 ND EPA MCL = 2000 ug/L ug/L 03/01/01 -- -- 500 ND ND ND ND 900 ND ug/L 09/01/01 -- -- 500 ND ND ND ND 990 ND ug/L 03/01/02 -- -- 500 ND ND ND ND 1300 ND ug/L 09/01/02 -- -- 500 ND ND ND ND 540 ND ug/L 04/01/03 -- -- 500 ND ND ND ND 780 ND ug/L 10/01 /03 -- -- 500 ND ND 650 ND 580 ND ug/L 03/01/04 -- -- 500 ND ND ND ND ND ND ug/L 09/01/04 -- -- 500 ND ND 730 ND ND ND ug/L 05/01/05 -- -- 500 ND ND ND ND 730 ND ug/L 10/01 /05 -- -- 500 ND ND 550 ND 870 ND ug/L 04/01 /06 -- -- 500 ND ND 575 ND 744 ND ug/L 10/01/06 -- -- 500 ND ND 514 ND 930 ND ug/L 04/10/07 -- -- -- 120 173 580 144 624 ND ug/L 09/25/07 -- -- -- 130 153 497 125 480 ND ug/L 05/02/08 0.2 -- 100 -- 371 634 128 964 ND ug/L 12/05/08 1.0 -- 100 127 1.1 375 180 812 ND ug/L 04/16/09 4.2 -- 100 -- 580 506 117 693 ND ug/L 10/07/09 1.0 -- 100 119 230 B 517 B 190 B 556 B -- ug/L 04/28/10 1.0 -- 100 112 304 489 112 508 ND ug/L 10/11/10 1.0 -- 100 -- 198 507 135 456 ND ug/L 05/10/11 1.0 -- 100 108 639 347 160 906 ND ug/L 10/06/11 1.0 -- 100 115 389 307 170 651 ND ug/L 04/16/12 1.0 -- 100 112 664 528 153 677 ND ug/L 10/24/12 1.0 -- 100 104 631 358 163 696 ND ug/L 04/24/13 1.0 -- 100 120 683 286 149 635 ND ug/L 09/10/13 1.0 -- 100 85.9 J 590 426 146 585 ND ug/L 04/22/14 1.0 -- 100 98.7 J 732 483 128 585 ND ug/L 10/06/14 1.0 -- 100 88.3 J 585 524 136 537 ND ug/L 04/07/15 1.0 -- 100 105 792 598 156 596 ND ug/L 10/07/15 1.0 -- 100 93.3 J 484 576 151 376 ND ug/L 04/26/16 1.0 -- 100 91.3 J 672 513 135 699 ND ug/L 09/28/16 1.0 -- 100 85.1 J 623 532 135 628 ND ug/L 04/27/17 1.0 -- 100 96.6 J 693 291 131 554 ND ug/L 10/17/17 1.0 -- 100 94.1 J 665 465 148 669 ND ug/L 04/16/18 1.0 -- 100 82.7 J 705 512 131 751 ND ug/L 10/18/18 1.1 10 -- 94.5 660 499 136 546 ND ug/L 04/08/19 1.1 10 -- 95.9 724 233 71 599 ND ug/L 10/09/19 1.1 10 -- 89.0 648 444 135 795 ND ug/L 04/20/20 1.1 10 -- 98.9 652 236 69.5 672 ND ug/L 10/13/20 1.1 10 -- 112 659 448 112 710 ND ug/L 04/29/21 1.1 10 -- 88.6 657 486 45.5 748 ND ug/L 10/12/21 1.1 10 -- 89.8 672 530 142 828 ND GOLDER 14 MEMBER OF WSP 1 of 12 March 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Cadmium ug/L 03/01/00 -- -- 1 ND ND 7.00 ND 4.0 ND NC 2L = 2 ug/L ug/L 09/01/00 -- -- 1 ND ND 11 ND 5.0 ND EPA MCL = 5 ug/L ug/L 03/01/01 -- -- 1 ND ND 3.4 ND 8.0 ND ug/L 09/01/01 -- -- 1 ND ND 5.0 1.6 5.5 ND ug/L 03/01/02 -- -- 1 ND 1.0 5.5 1.4 7.5 ND ug/L 09/01/02 -- -- 1 ND ND 5.5 ND 1.8 ND ug/L 04/01/03 -- -- 1 ND ND ND ND ND ND ug/L 10/01/03 -- -- 1 ND ND 7.6 1.7 4.5 ND ug/L 03/01/04 -- -- 1 ND 1.5 1.9 2.2 3.0 ND ug/L 09/01/04 -- -- 1 ND ND 1.1 ND ND ND ug/L 05/01/05 -- -- 1 ND ND ND ND ND ND ug/L 10/01/05 -- -- 1 ND ND ND ND ND ND ug/L 04/01/06 -- -- 1 4.3 ND ND ND ND ND ug/L 10/01/06 -- -- 1 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/02/08 0.5 -- 1 ND ND ND ND ND ND ug/L 12/05/08 0.36 -- 1 ND ND ND ND ND ND ug/L 04/16/09 0.09 -- 1 ND 0.35 B 0.53 B 0.23 B 1.2 B -- ug/L 10/07/09 0.36 -- 1 ND ND 0.422 J ND 0.914 J ND ug/L 04/28/10 0.36 -- 1 ND ND ND ND 0.649 J ND ug/L 10/11/10 0.36 -- 1 ND ND ND ND 0.638 J ND ug/L 05/10/11 0.36 -- 1 ND ND ND ND ND ND ug/L 10/06/11 0.36 -- 1 ND ND ND ND ND ND ug/L 04/16/12 0.36 -- 1 ND ND ND ND ND ND ug/L 10/24/12 0.36 -- 1 ND ND ND ND 0.494 J ND ug/L 04/24/13 0.36 -- 1 ND ND ND ND ND ND ug/L 09/10/13 0.36 -- 1 ND ND ND ND ND ND ug/L 04/22/14 0.36 -- 1 ND ND ND ND ND ND ug/L 10/06/14 0.36 -- 1 ND ND ND ND ND ND ug/L 04/07/15 0.36 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.36 -- 1 ND ND ND ND ND ND ug/L 04/26/16 0.36 -- 1 ND ND ND ND ND ND ug/L 09/28/16 0.36 -- 1 ND ND ND ND 0.427 J ND ug/L 04/27/17 0.36 -- 1 ND ND ND ND 0.409 J ND ug/L 10/17/17 0.36 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.36 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.36 1.00 -- ND ND ND ND ND ND ug/L 04/08/19 0.36 1.00 -- ND ND ND ND ND ND ug/L 10/09/19 0.36 1.00 -- ND ND ND ND ND ND ug/L 04/20/20 0.36 1.00 -- ND ND ND ND 1.29 ND ug/L 10/13/20 0.36 1.00 -- ND ND ND ND ND ND ug/L 04/29/21 0.36 1.00 -- ND ND ND ND ND ND ug/L 10/12/21 0.36 1.00 -- ND ND ND ND ND ND Chromium ug/L 03/01/00 -- -- 10 ND ND 28 12 ND ND NC 2L = 10 ug/L ug/L 09/01/00 -- -- 10 ND ND 40 ND ND ND EPA MCL = 100 ug/L ug/L 03/01/01 -- -- 10 ND ND 14 ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND 10 14 ND ug/L 03/01/02 -- -- 10 ND ND ND ND 11 ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND 12 12 10 ND ug/L 03/01/04 -- -- 10 ND ND 11 12 12 ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND 18 ND 90 ND ug/L 04/01/06 -- -- 10 ND ND 25.7 ND 13.2 ND ug/L 10/01/06 -- -- 10 ND ND ND ND 66 ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/02/08 2 -- 10 ND ND 25.2 ND 91.5 ND ug/L 12/05/08 1 -- 10 ND ND ND ND ND ND ug/L 04/16/09 0.7 -- 10 -- 3.4 J 44.2 12.8 52.5 ND ug/L 10/07/09 1 -- 10 ND ND 20.1 10.4 52.9 ND ug/L 04/28/10 1 -- 10 ND 1.52 J 6.17 J 4.75 J 37.4 ND ug/L 10/11/10 1 -- 10 ND ND 11.2 3.40 J 71.4 ND ug/L 05/10/11 1 -- 10 ND 5.13 J 73.8 15.1 109 ND ug/L 10/06/11 1 -- 10 1.27 J 2.33 J 12.8 9.49 J 36.4 ND ug/L 04/16/12 1 -- 10 ND 5.39 J 19.6 14.1 64.0 ND ug/L 10/24/12 1 -- 10 ND 2.34 J 42.2 8.00 J 51.6 ND ug/L 04/24/13 1.4 -- 10 1.74 J ND 21.8 2.79 J 39.3 ND ug/L 09/10/13 1.4 -- 10 ND ND 2.06 J 5.05 J 6.3 J ND ug/L 04/22/14 1.4 -- 10 ND 2.52 J 8.14 J 5.49 J 12.2 ND ug/L 10/06/14 1.4 -- 10 ND 2.59 J 12.8 6.34 J 5.58 J ND ug/L 04/07/15 1.4 -- 10 ND 3.97 J 20.0 9.33 J 9.31 J ND ug/L 10/07/15 1.4 -- 10 ND 2.66 J 29.9 7.78 J 4.61 J ND ug/L 04/26/16 1.4 -- 10 ND ND 3.57 J 1.56 J 2.83 J ND ug/L 09/28/16 1.4 -- 10 ND ND 2.98 J ND ND ND ug/L 04/27/17 1.4 -- 10 ND ND 7.43 J 1.52 J 2.45 J ND ug/L 10/17/17 1.4 -- 10 ND 3.94 J 5.66 J 4.38 J 2.36 J ND ug/L 04/16/18 1.4 -- 10 ND 1.76 J 12.6 3.90 J 2.70 J ND ug/L 10/18/18 1.4 10 -- ND 2.48 J 5.02 J 5.34 J 2.87 J ND ug/L 04/08/19 1.4 10 -- ND 2.40 J 6.88 J 3.39 J 1.94 J ND ug/L 10/09/19 1.4 10 -- ND 1.83 J ND 3.98 J ND ND ug/L 04/20/20 1.4 10 -- ND 1.70 J ND 1.66 J 1.49 J ND ug/L 10/13/20 1.4 10 -- 2.51 J 4.94 J 3.37 J 7.27 J 3.33 J ND ug/L 04/29/21 1.4 10 -- ND 2.55 J 3.22 J 2.58 J ND ND ug/L 10/12/21 1.4 10 -- ND 3.72 J 3.21 J 5.46 J 2.88 J ND GOLDER 14 MEMBER OF WSP 2 of 12 March 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 Detected Monitoring Reporting Sample Method Practical SWS Upgradient Well Downgradient Wells Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Lead ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND NC 2L = 15 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND EPA MCL = 15 ug/L ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND 26 ND 16 ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND 62 ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND 11.7 ND ug/L 04/10/07 -- -- -- 2.0 2.0 6.7 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 -- 10 ND ND 5.6 1 ND 17.6 ND ug/L 12/05/08 1.9 -- 10 ND ND ND ND ND ND ug/L 04/16/09 1.6 -- 10 -- 4.1 1 12.4 3.7 1 19 ND ug/L 10/07/09 1.9 -- 10 ND ND 3.31 1 2.44 1 14 ND ug/L 04/28/10 1.9 -- 10 ND ND ND ND 7.98 1 ND ug/L 10/11/10 1.9 -- 10 ND ND 2.01 1 ND 16.4 ND ug/L 05/10/11 1.9 -- 10 ND ND 11.3 2.85 1 34.3 ND ug/L 10/06/11 1.9 -- 10 ND ND ND ND 8.6 1 ND ug/L 04/16/12 1.9 -- 10 ND 1.9 3.15 1 1.9 15.8 ND ug/L 10/24/12 1.9 -- 10 ND 2.3 1 11.2 2.79 1 18.7 ND ug/L 04/24/13 1.9 -- 10 ND ND ND ND 9.79 1 ND ug/L 09/10/13 2.1 -- 10 ND ND ND ND 4.72 1 ND ug/L 04/22/14 2.1 -- 10 ND 3.12 1 4.62 1 ND 8.23 1 ND ug/L 10/06/14 2.1 -- 10 ND ND ND ND ND ND ug/L 04/07/15 3.1 -- 10 ND ND ND ND ND ND ug/L 10/07/15 3.1 -- 10 ND 3.7 1 4.3 1 ND 3.7 1 ND ug/L 04/26/16 3.1 -- 10 ND ND ND ND ND ND ug/L 09/28/16 3.1 -- 10 ND ND 4.94 1 ND 3.56 1 ND ug/L 04/27/17 3.1 -- 10 ND ND ND ND ND ND ug/L 10/17/17 3.1 -- 10 ND ND ND ND ND ND ug/L 04/16/18 3.1 -- 10 ND ND ND ND ND ND ug/L 10/18/18 3.1 10 -- ND ND ND ND ND ND ug/L 04/08/19 3.1 10 -- ND ND ND ND ND ND ug/L 10/09/19 3.1 10 -- ND ND ND 3.28 1 ND ND ug/L 04/20/20 3.1 10 -- ND 3.62 1 ND ND ND ND ug/L 10/13/20 3.1 10 -- ND ND 4.17 1 ND 5.07 1 ND ug/L 04/29/21 3.1 10 -- ND ND 4.94 1 ND 7.88 1 ND ug/L 10/12/21 3.1 10 -- ND ND ND ND ND ND Mercury ug/L 03/01/00 -- -- 0.5 ND ND ND ND ND ND NC 2L = 1 ug/L ug/L 09/01/00 -- -- 0.5 ND ND ND ND ND ND EPA MCL = 2 ug/L ug/L 03/01/01 -- -- 0.5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 0.5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 0.5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 0.5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 0.5 ND 2.4 ND ND ND ND ug/L 10/01/03 -- -- 0.5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 0.5 ND 2.4 ND ND ND ND ug/L 09/01/04 -- -- 0.5 ND 0.9 ND ND ND ND ug/L 05/01/05 -- -- 0.5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 0.5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 0.5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 0.5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- -- 0.14 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 -- 0.2 ND 0.45 ND ND ND ND ug/L 12/05/08 0.11 -- 0.2 ND ND ND ND ND ND ug/L 04/16/09 0.11 -- 0.2 -- 0.34 ND ND ND ND ug/L 10/07/09 0.054 -- 0.2 ND 0.0867 1 ND ND 0.0638 1 ND ug/L 04/28/10 0.17 -- 0.2 ND ND ND ND ND ND ug/L 10/11/10 0.17 -- 0.2 ND ND ND ND ND ND ug/L 05/10/11 0.17 -- 0.2 ND ND ND ND ND ND ug/L 10/06/11 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/16/12 0.17 -- 0.2 ND 0.237 ND ND ND ND ug/L 10/24/12 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/24/13 0.17 -- 0.2 ND ND ND ND ND ND ug/L 09/10/13 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/22/14 0.17 -- 0.2 ND ND ND ND ND ND ug/L 10/06/14 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/07/15 0.17 -- 0.2 ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/26/16 0.17 -- 0.2 ND ND ND ND ND ND ug/L 09/28/16 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/27/17 0.17 -- 0.2 ND 0.174 1 ND ND ND ND ug/L 10/17/17 0.17 -- 0.2 ND 0.667 ND ND ND ND ug/L 04/16/18 0.17 -- 0.2 ND 0.283 ND ND ND ND ug/L 10/18/18 0.15 0.20 -- ND ND ND ND ND ND ug/L 04/08/19 0.15 0.20 -- ND ND ND ND ND ND ug/L 10/09/19 0.15 0.20 -- ND ND ND ND ND ND ug/L 04/20/20 0.15 0.20 -- ND ND ND ND ND ND ug/L 10/13/20 0.15 0.20 -- ND ND ND ND ND ND ug/L 04/29/21 0.15 0.20 -- ND ND ND ND ND ND ug/L 10/12/21 0.15 0.20 -- ND ND ND ND ND ND GOLDER 14 MEMBER OF WSP 3 of 12 March 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 Detected Monitoring Reporting Sample Method Practical SWS Upgradient Well Downgradient Wells Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Selenium ug/L 03/01/00 -- -- 20 ND ND ND ND ND ND NC 2L = 20 ug/L ug/L 09/01/00 -- -- 20 ND ND ND ND ND ND EPA MCL = 50 ug/L ug/L 03/01/01 -- -- 20 ND ND ND ND ND ND ug/L 09/01/01 -- -- 20 ND ND ND ND ND ND ug/L 03/01/02 -- -- 20 ND ND ND ND ND ND ug/L 09/01/02 -- -- 20 ND ND ND ND ND ND ug/L 04/01/03 -- -- 20 ND ND ND ND ND ND ug/L 10/01/03 -- -- 20 ND ND ND ND ND ND ug/L 03/01/04 -- -- 20 ND ND ND ND ND ND ug/L 09/01/04 -- -- 20 ND ND ND ND ND ND ug/L 05/01/05 -- -- 20 ND ND ND ND ND ND ug/L 10/01/05 -- -- 20 ND ND ND ND ND ND ug/L 04/01/06 -- -- 20 ND ND ND ND ND ND ug/L 10/01/06 -- -- 20 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/02/08 2.0 -- 10 ND ND ND ND ND ND ug/L 12/05/08 2.7 -- 10 ND ND ND ND ND ND ug/L 04/16/09 3.4 -- 10 -- ND ND ND ND ND ug/L 10/07/09 2.7 -- 10 ND ND ND ND ND ND ug/L 04/28/10 0.83 -- 10 ND ND ND ND ND ND ug/L 10/11/10 2.7 -- 10 1.31 J 2.7 2.7 2.7 5.55 J ND ug/L 05/10/11 0.83 -- 10 1.07 J ND ND ND ND ND ug/L 10/06/11 2.7 -- 10 ND ND ND ND ND ND ug/L 04/16/12 2.7 -- 10 ND ND ND ND ND ND ug/L 10/24/12 4.5 -- 10 ND ND ND ND ND ND ug/L 04/24/13 4.5 -- 10 ND ND ND ND ND ND ug/L 09/10/13 5.0 -- 10 ND ND ND ND ND ND ug/L 04/22/14 5.0 -- 10 ND ND ND ND ND ND ug/L 10/06/14 5.0 -- 10 ND ND ND ND ND ND ug/L 04/07/15 5.0 -- 10 ND ND ND ND ND ND ug/L 10/07/15 5.0 -- 10 ND ND ND ND ND ND ug/L 04/26/16 6.2 -- 10 ND ND ND ND ND ND ug/L 09/28/16 6.2 -- 10 ND ND ND ND ND ND ug/L 04/27/17 6.2 -- 10 ND ND ND ND ND ND ug/L 10/17/17 6.2 -- 10 ND ND ND ND ND ND ug/L 04/16/18 6.2 -- 10 ND ND ND ND ND ND ug/L 10/18/18 6.2 10 -- ND ND ND ND ND ND ug/L 04/08/19 6.2 10 -- ND ND ND ND ND ND ug/L 10/09/19 6.2 10 -- ND ND ND ND ND ND ug/L 04/20/20 6.2 10 -- ND ND ND ND ND ND ug/L 10/13/20 6.2 10 -- ND ND ND ND ND ND ug/L 04/29/21 6.2 10 -- ND ND ND ND ND ND ug/L 10/12/21 6.2 10 -- ND ND ND ND ND ND Silver ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND NC 2L = 20 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND EPA MCL = 100 ug/L ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/02/08 2.0 -- 10 ND ND ND ND ND ND ug/L 12/05/08 1.9 -- 10 ND ND ND ND ND ND ug/L 04/16/09 1.0 -- 10 -- 5.2 J 2.1 J 5 J ND ND ug/L 10/07/09 1.9 -- 10 ND 2.34 J 3.35 J 3.53 J 2.44 J ND ug/L 04/28/10 1.9 -- 10 ND 5.16 J 6.91 J 5.57 J 2.93 J ND ug/L 10/11/10 1.9 -- 10 ND 2 J ND 3.56 J ND ND ug/L 05/10/11 1.9 -- 10 ND 2.04 J ND 3.07 J 3.11 J ND ug/L 10/06/11 1.9 -- 10 ND ND ND 1.92 J 1.9 J ND ug/L 04/16/12 1.9 -- 10 ND 3.7 J 4.39 J 4.54 J 5.39 J ND ug/L 10/24/12 1.9 -- 10 ND ND 2.94 J ND 3.8 J ND ug/L 04/24/13 1.9 -- 10 ND 4.22 J 2.96 J 4.42 J ND ND ug/L 09/10/13 1.9 -- 10 ND ND 2.16 J 2.59 J 2.62 J ND ug/L 04/22/14 1.9 -- 10 ND ND ND ND ND ND ug/L 10/06/14 1.9 -- 10 ND ND ND ND ND ND ug/L 04/07/15 1.9 -- 10 ND 2.16 J 2.18 J ND ND ND ug/L 10/07/15 1.9 -- 10 2.79 J ND ND ND ND ND ug/L 04/26/16 1.9 -- 10 ND ND ND ND ND ND ug/L 09/28/16 1.9 -- 10 ND ND ND ND ND ND ug/L 04/27/17 1.9 -- 10 ND 2.04 J ND 2.66 J ND ND ug/L 10/17/17 1.9 -- 10 ND ND ND ND ND ND ug/L 04/16/18 1.9 -- 10 ND ND ND ND 2.23 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 ug/L 10/13/20 1.9 10 -- ND ND ND ND ND ND ug/L 04/29/21 1.9 10 -- ND 2.48 J ND ND ND ND ug/L 10/12/21 1.9 10 -- ND ND ND ND ND ND GOLDER 14 MEMBER OF WSP 4 of 12 March 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 Detected Monitoring Reporting Sample Method Practical SWS Upgradient Well Downgradient Wells Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Acetone ug/L 03/01/00 -- -- 100 ND ND ND ND ND ND NC 2L = 6000 ug/L ug/L 09/01/00 -- -- 100 ND ND ND ND ND ND (No EPA MCL) ug/L 03/01/01 -- -- 100 ND ND ND ND ND ND ug/L 09/01/01 -- -- 100 ND ND ND ND ND ND ug/L 03/01/02 -- -- 100 ND ND ND ND ND ND ug/L 09/01/02 -- -- 100 ND ND ND ND ND ND ug/L 04/01/03 -- -- 100 ND ND ND ND ND ND ug/L 10/01/03 -- -- 100 ND ND ND ND ND ND ug/L 03/01/04 -- -- 100 ND ND ND ND ND ND ug/L 09/01/04 -- -- 100 ND ND ND ND ND ND ug/L 05/01/05 -- -- 100 ND ND ND ND ND ND ug/L 10/01/05 -- -- 100 ND ND ND ND ND ND ug/L 04/01/06 -- -- 100 ND ND ND ND ND ND ug/L 10/01/06 -- -- 100 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND 33 1 1.4 1 ND ug/L 09/25/07 -- -- -- 3.8 B 5.8 1 7.1 1 9.1 1 20 1 ND ug/L 05/02/08 0.62 -- 100 ND ND ND ND ND ND ug/L 12/05/08 1.5 -- 100 ND 0.37 6.4 1 5.6 1 6.1 1 ND ug/L 04/16/09 1.5 -- 100 -- 15 1 ND ND ND ND ug/L 10/07/09 2.8 -- 55 ND ND ND ND ND ND ug/L 10/14/09 1.5 -- 100 ND -- -- -- -- ND ug/L 04/28/10 1.5 -- 100 ND ND ND ND ND ND ug/L 10/11/10 1.5 -- 100 ND ND ND ND ND ND ug/L 05/10/11 1.2 -- 100 ND ND ND ND 4.1 1 ND ug/L 10/06/11 1.2 -- 100 ND ND ND ND 5.7 1 ND ug/L 04/16/12 1.2 -- 100 ND 3.8 1 ND ND ND ND ug/L 10/24/12 1.2 -- 100 ND 12 1 ND ND 12 1 ND ug/L 04/24/13 0.96 -- 100 ND ND ND ND ND ND ug/L 09/10/13 1.2 -- 100 ND ND ND ND 8.6 1 ND ug/L 04/22/14 1.2 -- 100 ND ND ND ND ND ND ug/L 10/06/14 1.2 -- 100 ND ND ND ND ND ND ug/L 04/07/15 1.2 -- 100 ND ND ND ND 3.6 1 ND ug/L 10/07/15 1.2 -- 100 ND ND ND ND ND ND ug/L 04/26/16 1.2 -- 100 ND ND ND ND ND ND ug/L 09/28/16 10 -- 100 ND ND ND ND ND ND ug/L 04/27/17 10 -- 100 16 B 20 B 32 B 19 B 31 B 20 1 ug/L 10/17/17 10 -- 100 ND ND ND ND ND ND ug/L 04/16/18 10 -- 100 ND ND ND ND 14 1 ND ug/L 10/18/18 10 20 -- ND ND ND ND ND ND ug/L 04/08/19 10 20 -- ND ND ND ND 13 1 ND ug/L 10/09/19 10 20 -- ND ND ND ND ND ND ug/L 04/20/20 10 20 -- ND ND ND ND ND ND ug/L 10/13/20 10 20 -- ND ND ND ND ND ND ug/L 04/29/21 10 20 -- ND ND ND ND 15 1 ND ug/L 10/12/21 10 20 -- ND ND ND ND ND 26 Benzene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 1 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND EPA MCL = 5 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND 1.3 ND 0.5 1 0.5 1 ND ug/L 05/02/08 0.2 -- 1 ND 1.7 ND ND 0.43 1 ND ug/L 12/05/08 0.2 -- 1 ND 162 ND 0.51 1 ND ND ug/L 04/16/09 0.2 -- 1 -- ND ND ND ND ND ug/L 10/07/09 0.2 -- 1 ND 1.6 ND 0.51 1 ND ND ug/L 04/28/10 0.05 -- 1 ND 1.7 ND ND ND ND ug/L 10/11/10 0.2 -- 1 ND 1.5 ND 0.49 1 ND ND ug/L 05/10/11 0.68 -- 1 ND 2.7 ND ND ND ND ug/L 10/06/11 0.68 -- 1 ND 1.8 ND ND ND ND ug/L 04/16/12 0.15 -- 1 ND 2.8 ND ND ND ND ug/L 10/24/12 0.15 -- 1 ND 2.2 0.15 0.44 1 0.15 ND ug/L 04/24/13 0.25 -- 1 ND 3.5 ND 0.34 1 ND ND ug/L 09/10/13 0.15 -- 1 ND 3.0 ND ND ND ND ug/L 04/22/14 0.15 -- 1 ND 3.5 ND ND ND ND ug/L 10/06/14 0.15 -- 1 ND 3.9 0.54 1 ND ND ND ug/L 04/07/15 0.15 -- 1 ND 3.7 ND ND ND ND ug/L 10/07/15 0.15 -- 1 ND 3.3 ND 0.58 1 ND ND ug/L 04/26/16 0.15 -- 1 ND 3.9 ND ND ND ND ug/L 09/28/16 0.15 -- 1 ND 4.3 ND 0.52 1 ND ND ug/L 04/27/17 0.15 -- 1 ND 5.4 ND ND ND ND ug/L 10/17/17 0.15 -- 1 ND 4.4 ND ND ND ND ug/L 04/16/18 0.15 -- 1 ND 5.0 ND ND ND ND ug/L 10/18/18 0.15 1.0 -- ND 2.9 ND ND ND ND ug/L 04/08/19 0.15 1.0 -- ND 5.6 ND ND ND ND ug/L 10/09/19 0.15 1.0 -- ND 4.8 ND ND ND ND ug/L 04/20/20 0.15 1.0 -- ND 5.0 ND ND ND ND ug/L 10/13/20 0.15 1.0 -- ND 4.8 ND ND ND ND ug/L 04/29/21 0.15 1.0 -- ND 7.8 ND ND ND ND ug/L 10/12/21 0.15 1.0 -- ND 4.8 ND ND ND ND GOLDER 14 MEMBER OF WSP 5 of 12 March 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 Detected Monitoring Reporting Sample Method Practical SWS Upgradient Well Downgradient Wells Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Bromoform ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- NC 2L = 4 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- EPA MCL = 80 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ug/L 04/01/03 -- -- 5 ND ND ND ND ND -- ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ug/L 04/01/06 -- -- 5 ND ND ND ND ND -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ug/L 04/10/07 -- -- -- ND ND ND ND ND -- ug/L 09/25/07 -- -- -- ND ND ND ND ND -- ug/L 05/02/08 0.29 -- 3 ND ND ND ND ND -- ug/L 12/05/08 0.71 -- 3 ND 7.1 J ND ND ND -- ug/L 04/16/09 0.71 -- 3 -- ND ND ND ND -- ug/L 10/07/09 0.71 -- 3 ND ND ND ND ND -- ug/L 04/28/10 0.2 -- 3 ND ND ND ND ND ND ug/L 10/11/10 0.71 -- 3 ND ND ND ND ND ND ug/L 05/10/11 0.68 -- 3 ND -- -- -- -- ND ug/L 10/06/11 0.68 -- 3 ND ND ND ND ND ND ug/L 04/16/12 0.22 -- 3 ND ND ND ND ND ND ug/L 10/24/12 0.22 -- 3 ND ND ND ND ND ND ug/L 04/24/13 0.33 -- 3 ND ND ND ND ND ND ug/L 09/10/13 0.22 -- 3 ND ND ND ND ND ND ug/L 04/22/14 0.22 -- 3 ND ND ND ND ND ND ug/L 10/06/14 0.22 -- 3 ND ND ND ND ND ND ug/L 04/07/15 0.22 -- 3 ND ND ND ND ND -- ug/L 10/07/15 0.22 -- 3 ND ND ND ND ND -- ug/L 04/26/16 0.22 -- 3 ND ND ND ND ND -- ug/L 09/28/16 0.22 -- 3 ND ND ND ND ND -- ug/L 04/27/17 0.22 -- 3 ND ND ND ND ND ND ug/L 10/17/17 0.22 -- 3 ND ND ND ND ND ND ug/L 04/16/18 0.22 -- 3 ND ND ND ND ND ND ug/L 10/18/18 0.22 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.22 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 0.22 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.22 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.22 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.22 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.22 1.0 -- ND ND ND ND ND ND Carbon Tetrachloride ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- NC 2L = 0.3 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- EPA MCL = 5 ug/L ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ug/L 04/01/03 -- -- 10 ND ND ND ND ND -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ug/L 04/01/06 -- -- 10 ND ND ND ND ND -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ug/L 04/10/07 -- -- -- ND ND ND ND ND -- ug/L 09/25/07 -- -- -- ND ND ND ND ND -- ug/L 05/02/08 0.35 -- 1 ND ND ND ND ND -- ug/L 12/05/08 0.38 -- 1 ND ND ND ND ND -- ug/L 04/16/09 0.38 -- 1 -- ND ND ND ND -- ug/L 10/07/09 0.38 -- 1 ND ND ND ND ND -- ug/L 04/28/10 0.082 -- 1 ND ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 ND ND ND ND ND ND ug/L 05/10/11 0.69 -- 1 ND ND ND ND ND ND ug/L 10/06/11 0.69 -- 1 ND ND ND ND ND ND ug/L 04/16/12 0.17 -- 1 ND ND ND ND ND ND ug/L 10/24/12 0.17 -- 1 ND ND ND ND ND ND ug/L 04/24/13 0.34 -- 1 ND ND ND ND ND ND ug/L 09/10/13 0.17 -- 1 ND ND 0.17 ND ND ND ug/L 04/22/14 0.17 -- 1 ND ND ND ND ND ND ug/L 10/06/14 0.17 -- 1 ND ND ND ND ND ND ug/L 04/07/15 0.17 -- 1 ND ND ND ND ND -- ug/L 10/07/15 0.17 -- 1 ND ND ND ND ND -- ug/L 04/26/16 0.17 -- 1 ND ND ND ND ND -- ug/L 09/28/16 0.17 -- 1 ND ND ND ND ND -- ug/L 04/27/17 0.17 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.17 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.17 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.17 1.0 -- ND ND ND ND ND ND GOLDER 14 MEMBER OF WSP 6 of 12 March 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 Detected Monitoring Reporting Sample Method Practical SWS Upgradient Well Downgradient Wells Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Chlorobenzene ug/L 03/01/00 -- -- 5 ND ND ND ND 5.4 ND NC 2L = 50 ug/L ug/L 09/01/00 -- -- 5 ND ND ND 6.2 6.7 ND EPA MCL = 100 ug/L ug/L 03/01/01 -- -- 5 ND ND ND 6.7 8.2 ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND 7.5 ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND 6.7 ND ug/L 10/01/03 -- -- 5 ND ND ND 8.3 10 ND ug/L 03/01/04 -- -- 5 ND ND ND 7.7 9.8 ND ug/L 09/01/04 -- -- 5 ND ND ND 11 ND ND ug/L 05/01/05 -- -- 5 ND ND ND 8 9 ND ug/L 10/01/05 -- -- 5 ND ND 5 14 5 ND ug/L 04/01/06 -- -- 5 ND ND ND 9.6 9.8 ND ug/L 10/01/06 -- -- 5 ND ND 5.6 13 12 ND ug/L 04/10/07 -- -- -- 0.16 0.16 0.16 0.16 11 ND ug/L 09/25/07 -- -- -- 0.16 2.0 1 4.2 ND ND ND ug/L 05/02/08 0.27 -- 3 ND 4.6 5.8 9.8 9.4 ND ug/L 12/05/08 0.27 -- 3 ND 0.38 1.8 1 12 5.6 ND ug/L 04/16/09 0.27 -- 3 -- 7.2 4.3 6.7 6.1 ND ug/L 10/07/09 0.27 -- 3 ND 3.3 6.2 15 5.6 ND ug/L 04/28/10 0.069 -- 3 ND 3.9 6.2 12 5.5 ND ug/L 10/11/10 0.27 -- 3 ND 3.2 6.4 16 3.9 ND ug/L 05/10/11 0.74 -- 3 ND 6.3 1.4 1 9.3 5.6 ND ug/L 10/06/11 0.74 -- 3 ND 5.1 3.4 15 7.8 ND ug/L 04/16/12 0.17 -- 3 ND 7.3 4.7 7.4 4.2 ND ug/L 10/24/12 0.17 -- 3 ND 5.8 3 15 7.4 ND ug/L 04/24/13 0.26 -- 3 ND 8.1 1.7 1 10 4.2 ND ug/L 09/10/13 0.17 -- 3 ND 7.6 5.4 12 7.7 ND ug/L 04/22/14 0.17 -- 3 ND 11 4.8 8.2 7.6 ND ug/L 10/06/14 0.17 -- 3 ND 9.8 8.1 9.5 9.3 ND ug/L 04/07/15 0.17 -- 3 ND 11 6.2 13 7.1 ND ug/L 10/07/15 0.17 -- 3 ND 7.2 8.0 18 0.67 1 ND ug/L 04/26/16 0.17 -- 3 ND 10 6.0 8.3 4.4 ND ug/L 09/28/16 0.17 -- 3 ND 11 8.7 17 3.9 ND ug/L 04/27/17 0.17 -- 3 ND 13 3.3 10 4.2 ND ug/L 10/17/17 0.17 -- 3 ND 12 7.6 16 2.9 1 ND ug/L 04/16/18 0.17 -- 3 ND 12 4.6 4.6 5.2 ND ug/L 10/18/18 0.17 1.0 -- ND 13 6.3 3.6 4.7 ND ug/L 04/08/19 0.17 1.0 -- ND 12 1.5 ND 5.4 ND ug/L 10/09/19 0.17 1.0 -- ND 14 6.5 12 2.9 ND ug/L 04/20/20 0.17 1.0 -- ND 12 2.0 ND 5.3 ND ug/L 10/13/20 0.17 1.0 -- ND 14 5.0 2.5 6.4 ND ug/L 04/29/21 0.17 1.0 -- ND 15 7.2 ND 6.4 ND ug/L 10/12/21 0.17 1.0 -- ND 16 7.5 12 4.4 ND Chloroethane ug/L 03/01/00 -- -- 10 ND ND ND ND ND -- NC 2L = 3000 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND -- (No EPA MCL) ug/L 03/01/01 -- -- 10 ND ND ND ND ND -- ug/L 09/01/01 -- -- 10 ND ND ND ND ND -- ug/L 03/01/02 -- -- 10 ND ND ND ND ND -- ug/L 09/01/02 -- -- 10 ND ND ND ND ND -- ug/L 04/01/03 -- -- 10 ND ND ND ND ND -- ug/L 10/01/03 -- -- 10 ND ND ND ND ND -- ug/L 03/01/04 -- -- 10 ND ND ND ND ND -- ug/L 09/01/04 -- -- 10 ND ND ND ND ND -- ug/L 05/01/05 -- -- 10 ND ND ND ND ND -- ug/L 10/01/05 -- -- 10 ND ND ND ND ND -- ug/L 04/01/06 -- -- 10 ND ND ND ND ND -- ug/L 10/01/06 -- -- 10 ND ND ND ND ND -- ug/L 04/10/07 -- -- -- ND ND ND ND ND -- ug/L 09/25/07 -- -- -- ND ND ND ND ND -- ug/L 05/02/08 0.3 -- 10 ND ND ND ND ND -- ug/L 12/05/08 0.3 -- 10 ND 1.8 1 ND ND ND -- ug/L 04/16/09 0.3 -- 10 -- ND ND ND ND -- ug/L 10/07/09 0.3 -- 10 ND ND ND ND ND -- ug/L 04/28/10 0.18 -- 10 ND ND ND ND ND ND ug/L 10/11/10 0.3 -- 10 ND ND ND ND ND ND ug/L 05/10/11 0.75 -- 10 ND ND ND ND ND ND ug/L 10/06/11 0.75 -- 10 ND ND ND ND ND ND ug/L 04/16/12 0.23 -- 10 ND ND ND ND ND ND ug/L 10/24/12 0.23 -- 10 ND ND ND ND ND ND ug/L 04/24/13 0.53 -- 10 ND ND ND ND ND ND ug/L 09/10/13 0.23 -- 10 ND ND ND ND ND ND ug/L 04/22/14 0.23 -- 10 ND ND ND ND ND ND ug/L 10/06/14 0.23 -- 10 ND ND ND ND ND -- ug/L 04/07/15 0.23 -- 10 ND ND ND ND ND -- ug/L 10/07/15 0.23 -- 10 ND ND ND ND ND -- ug/L 04/26/16 0.23 -- 10 ND ND ND ND ND -- ug/L 09/28/16 0.23 -- 10 ND ND ND ND ND -- ug/L 04/27/17 0.23 -- 10 ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 10 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 10 ND ND ND ND ND ND ug/L 10/18/18 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.23 1.0 -- ND ND ND ND ND ND GOLDER 14 MEMBER OF WSP 7 of 12 March 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 Detected Monitoring Reporting Sample Method Practical SWS Upgradient Well Downgradient Wells Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 1,2-Dichlorobenzene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 20 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND EPA MCL = 600 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 1.2 1 0.84 1 0.60 1 ND ug/L 09/25/07 -- -- -- ND ND 1.2 1 0.79 1 0.48 1 ND ug/L 05/02/08 0.27 -- 5 ND ND 1 1 0.49 1 ND ND ug/L 12/05/08 0.27 -- 5 ND 0.42 ND 0.75 1 ND ND ug/L 04/16/09 0.27 -- 5 -- ND 1.1 1 0.59 1 0.41 1 ND ug/L 10/07/09 0.27 -- 5 ND ND 1.5 1 0.85 1 ND ND ug/L 04/28/10 0.052 -- 5 ND ND 1.4 1 0.73 1 ND ND ug/L 10/11/10 0.27 -- 5 ND ND 1.3 1 0.88 1 ND ND ug/L 05/10/11 0.11 -- 5 ND ND ND ND ND ND ug/L 10/06/11 0.11 -- 5 ND ND 0.74 1 0.79 1 ND ND ug/L 04/16/12 0.19 -- 5 ND ND 0.78 1 0.45 1 ND ND ug/L 10/24/12 0.19 -- 5 ND ND 0.56 1 0.81 1 ND ND ug/L 04/24/13 0.39 -- 5 ND ND ND 0.59 1 ND ND ug/L 09/10/13 0.19 -- 5 ND ND 0.85 1 0.67 1 0.41 1 ND ug/L 04/22/14 0.19 -- 5 ND ND 0.92 1 0.55 1 ND ND ug/L 10/06/14 0.19 -- 5 ND ND 1.3 ND ND ND ug/L 04/07/15 0.19 -- 5 ND 0.41 1 1.3 1 0.7 1 ND ND ug/L 10/07/15 0.19 -- 5 ND ND 1.4 1 0.84 1 ND ND ug/L 04/26/16 0.19 -- 5 ND ND 1.1 1 0.44 1 ND ND ug/L 09/28/16 0.19 -- 5 ND ND 1.5 1 0.83 1 ND ND ug/L 04/27/17 0.19 -- 5 ND ND 0.94 1 0.56 1 ND ND ug/L 10/17/17 0.19 -- 5 ND ND 1.5 1 0.82 1 ND ND ug/L 04/16/18 0.19 -- 5 ND ND 1.5 1 ND ND ND ug/L 10/18/18 0.19 1.0 -- ND ND 1.7 ND ND ND ug/L 04/08/19 0.19 1.0 -- ND 0.43 1 ND ND ND ND ug/L 10/09/19 0.19 1.0 -- ND ND 1.0 0.58 1 ND ND ug/L 04/20/20 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.19 1.0 -- ND 0.43 1 0.89 1 ND ND ND ug/L 04/29/21 0.19 1.0 -- ND 0.48 1 1.2 ND ND ND ug/L 10/12/21 0.19 1.0 -- ND ND 1.5 ND ND ND 1,4-Dichlorobenzene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 6 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND EPA MCL = 75 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND 5.6 ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND 5.6 ND ug/L 05/01/05 -- -- 5 ND ND ND ND 5.0 ND ug/L 10/01/05 -- -- 5 ND 5.0 ND 6.0 ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND 5.0 ND ug/L 10/01/06 -- -- 5 ND ND ND ND 5.0 ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 0.15 3.5 1.4 4.1 5.4 ND ug/L 05/02/08 0.20 -- 1 ND 4.6 1.7 3.8 5.1 ND ug/L 12/05/08 0.38 -- 1 ND 0.27 1.8 4.0 3.5 ND ug/L 04/16/09 0.38 -- 1 -- 5.1 1.4 2.9 4.6 ND ug/L 10/07/09 0.38 -- 1 ND ND ND 4.6 4.1 ND ug/L 04/28/10 0.1 -- 1 ND 4.2 1.6 4.1 3.8 ND ug/L 10/11/10 0.38 -- 1 ND 3.9 1.6 4.5 2.3 ND ug/L 05/10/11 0.79 -- 1 ND 3.4 ND ND ND ND ug/L 10/06/11 0.79 -- 1 ND 3.6 ND 3.9 3.7 ND ug/L 04/16/12 0.19 -- 1 ND 3.6 1.0 2.3 2.5 ND ug/L 10/24/12 0.19 -- 1 ND 3.1 1.4 3.9 3.2 ND ug/L 04/24/13 0.14 -- 1 ND ND 0.82 1 2.9 2.4 ND ug/L 09/10/13 0.19 -- 1 ND 3.6 ND 3.1 3.9 ND ug/L 04/22/14 0.19 -- 1 ND 5.1 1.0 2.7 4.6 ND ug/L 10/06/14 0.19 -- 1 ND 4.9 1.6 2.2 5.0 ND ug/L 04/07/15 0.19 -- 1 ND 5.3 1.2 3.5 3.4 ND ug/L 10/07/15 0.19 -- 1 ND 3.6 1.7 4.7 0.53 1 ND ug/L 04/26/16 0.19 -- 1 ND 4.7 1.3 2.4 2.4 ND ug/L 09/28/16 0.19 -- 1 ND 4.7 1.6 4.2 2.7 ND ug/L 04/27/17 0.19 -- 1 ND 6.1 ND 3.0 3.2 ND ug/L 10/17/17 0.19 -- 1 ND 5.5 2.1 4.5 3.8 ND ug/L 04/16/18 0.19 -- 1 ND 5.8 1.7 1.9 3.5 ND ug/L 10/18/18 0.19 1.0 -- ND 6.4 ND 2.2 4.4 ND ug/L 04/08/19 0.19 1.0 -- ND 6.0 0.94 1 0.71 1 3.1 ND ug/L 10/09/19 0.19 1.0 -- ND 5.8 ND 3.1 2.3 ND ug/L 04/20/20 0.19 1.0 -- ND 5.2 0.93 1 0.54 1 3.0 ND ug/L 10/13/20 0.19 1.0 -- ND 6.6 2.1 1.3 4.4 ND ug/L 04/29/21 0.19 1.0 -- ND 7.6 2.0 ND 3.8 ND ug/L 10/12/21 0.19 1.0 -- ND 6.7 1.8 3.2 ND ND GOLDER 14 MEMBER OF WSP 8 of 12 March 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 Detected Monitoring Reporting Sample Method Practical SWS Upgradient Well Downgradient Wells Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 1,1-Dichloroethane ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 6 ug/L ug/L 09/01/00 -- -- 5 ND ND ND 5.8 ND ND (No EPA MCL) ug/L 03/01/01 -- -- 5 ND ND ND 5.0 ND ND ug/L 09/01/01 -- -- 5 ND ND ND 5.6 ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND 5.0 ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND 1.3 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 -- 5 ND 1.3 1 ND 2.0 1 ND ND ug/L 12/05/08 0.33 -- 5 ND 0.54 ND 3.2 1 ND ND ug/L 04/16/09 0.33 -- 5 -- 1.0 1 ND 1.4 1 ND ND ug/L 10/07/09 0.33 -- 5 ND 1.4 1 ND 2.6 1 ND ND ug/L 04/28/10 0.05 -- 5 ND 1.2 1 ND 2.0 1 ND ND ug/L 10/11/10 0.33 -- 5 ND 1.4 1 ND 2.6 1 ND ND ug/L 05/10/11 0.08 -- 5 ND 0.97 1 0.08 2.0 1 ND ND ug/L 10/06/11 0.08 -- 5 ND 1.2 1 ND 2.3 1 ND ND ug/L 04/16/12 0.13 -- 5 ND 1.0 1 ND 1.5 1 ND ND ug/L 10/24/12 0.13 -- 5 ND 0.72 1 ND 2.3 1 ND ND ug/L 04/24/13 0.28 -- 5 ND 0.71 1 ND 1.9 1 ND ND ug/L 09/10/13 0.13 -- 5 ND 0.67 1 0.13 2.2 1 ND ND ug/L 04/22/14 0.13 -- 5 ND 0.56 1 ND 1.2 1 ND ND ug/L 10/06/14 0.13 -- 5 ND 0.74 1 ND 1.5 ND ND ug/L 04/07/15 0.13 -- 5 ND ND ND 1.5 1 ND ND ug/L 10/07/15 0.13 -- 5 ND 1.0 1 ND 3.2 1 ND ND ug/L 04/26/16 0.13 -- 5 ND 0.45 1 ND 2.0 1 ND ND ug/L 09/28/16 0.13 -- 5 ND 0.86 1 ND 2.9 1 ND ND ug/L 04/27/17 0.13 -- 5 ND 0.47 1 ND 1.6 1 ND ND ug/L 10/17/17 0.13 -- 5 ND 0.52 1 ND 2.6 1 ND ND ug/L 04/16/18 0.13 -- 5 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 ug/L 04/29/21 0.13 1.0 -- ND 0.68 1 ND ND ND ND ug/L 10/12/21 0.13 1.0 -- ND ND ND 2.3 ND ND 1,2-Dichloroethane ug/L 03/01/00 -- -- 5 ND ND ND ND ND -- NC 2L = 0.4 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND -- EPA MCL = 5 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND -- ug/L 09/01/01 -- -- 5 ND ND ND ND ND -- ug/L 03/01/02 -- -- 5 ND ND ND ND ND -- ug/L 09/01/02 -- -- 5 ND ND ND ND ND -- ug/L 04/01/03 -- -- 5 ND ND ND ND ND -- ug/L 10/01/03 -- -- 5 ND ND ND ND ND -- ug/L 03/01/04 -- -- 5 ND ND ND ND ND -- ug/L 09/01/04 -- -- 5 ND ND ND ND ND -- ug/L 05/01/05 -- -- 5 ND ND ND ND ND -- ug/L 10/01/05 -- -- 5 ND ND ND ND ND -- ug/L 04/01/06 -- -- 5 ND ND ND ND ND -- ug/L 10/01/06 -- -- 5 ND ND ND ND ND -- ug/L 04/10/07 -- -- -- ND ND ND ND ND -- ug/L 09/25/07 -- -- -- ND ND ND ND ND -- ug/L 05/02/08 0.46 -- 1 ND ND ND ND ND -- ug/L 12/05/08 0.65 -- 1 ND 1.6 J ND ND ND -- ug/L 04/16/09 0.65 -- 1 -- ND ND ND ND -- ug/L 10/07/09 0.65 -- 1 ND ND ND ND ND -- ug/L 04/28/10 0.082 -- 1 ND ND ND ND ND ND ug/L 10/11/10 0.65 -- 1 ND ND ND ND ND ND ug/L 05/10/11 0.47 -- 1 ND ND ND ND ND ND ug/L 10/06/11 0.47 -- 1 ND ND ND ND ND ND ug/L 04/16/12 0.21 -- 1 ND ND ND ND ND ND ug/L 10/24/12 0.21 -- 1 ND ND ND ND ND ND ug/L 04/24/13 0.24 -- 1 ND ND ND ND ND ND ug/L 09/10/13 0.21 -- 1 ND ND ND ND ND ND ug/L 04/22/14 0.21 -- 1 ND ND ND ND ND ND ug/L 10/06/14 0.21 -- 1 ND ND ND ND ND -- ug/L 04/07/15 0.21 -- 1 ND ND ND ND ND -- ug/L 10/07/15 0.21 -- 1 ND ND ND ND ND -- ug/L 04/26/16 0.21 -- 1 ND ND ND ND ND -- ug/L 09/28/16 0.21 -- 1 ND ND ND ND ND -- ug/L 04/27/17 0.21 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.21 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.21 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.21 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.21 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 0.21 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.21 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.21 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.21 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.21 1.0 -- ND ND ND ND ND ND GOLDER 14 MEMBER OF WSP 9 of 12 March 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 Detected Monitoring Reporting Sample Method Practical SWS Upgradient Well Downgradient Wells Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 1,1-Dichloroethene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 7 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND EPA MCL = 7 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND 0.45 1 ND ND ug/L 05/02/08 0.2 -- 5 ND ND ND ND ND ND ug/L 12/05/08 0.24 -- 5 ND 0.65 ND 0.56 1 ND ND ug/L 04/16/09 0.24 -- 5 -- ND ND ND ND ND ug/L 10/07/09 0.24 -- 5 ND ND ND 0.46 1 ND ND ug/L 04/28/10 0.15 -- 5 ND ND ND ND ND ND ug/L 10/11/10 0.24 -- 5 ND ND ND 0.48 1 ND ND ug/L 05/10/11 0.6 -- 5 ND ND ND ND ND ND ug/L 10/06/11 0.6 -- 5 ND ND ND ND ND ND ug/L 04/16/12 0.21 -- 5 ND ND ND ND ND ND ug/L 10/24/12 0.21 -- 5 ND ND ND 0.4 1 ND ND ug/L 04/24/13 0.31 -- 5 ND ND ND 0.37 1 ND ND ug/L 09/10/13 0.21 -- 5 ND ND ND 0.47 1 ND ND ug/L 04/22/14 0.21 -- 5 ND ND ND ND ND ND ug/L 10/06/14 0.21 -- 5 ND ND ND ND ND ND ug/L 04/07/15 0.21 -- 5 ND ND ND ND ND ND ug/L 10/07/15 0.21 -- 5 ND ND ND ND ND ND ug/L 04/26/16 0.21 -- 5 ND ND ND ND ND ND ug/L 09/28/16 0.21 -- 5 ND ND ND 0.8 1 ND ND ug/L 04/27/17 0.21 -- 5 ND ND ND ND ND ND ug/L 10/17/17 0.21 -- 5 ND ND ND 0.68 1 ND ND ug/L 04/16/18 0.21 -- 5 ND ND ND ND ND ND ug/L 10/18/18 0.21 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.21 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 0.21 1.0 -- ND ND ND 0.64 1 ND ND ug/L 04/20/20 0.21 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.21 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.21 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.21 1.0 -- ND ND ND ND ND ND cis- 1,2-Dichloroethene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 70 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND EPA MCL = 70 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 0.34 1 0.69 1 ND ND ug/L 09/25/07 -- -- -- ND 2.2 1 0.45 1 1.3 1 0.14 ND ug/L 05/02/08 0.30 -- 5 ND 1.3 1 0.42 1 0.77 1 ND ND ug/L 12/05/08 0.36 -- 5 ND ND ND ND ND ND ug/L 04/16/09 0.36 -- 5 -- 1.2 1 0.58 1 0.67 1 ND ND ug/L 10/07/09 0.36 -- 5 ND 2.4 1 0.62 1 1.4 1 ND ND ug/L 04/28/10 0.075 -- 5 ND 1.9 1 0.61 1 0.87 1 ND ND ug/L 10/11/10 0.36 -- 5 ND 2.2 1 0.51 1 1.1 1 ND ND ug/L 05/10/11 0.72 -- 5 ND 1.1 1 ND 0.89 1 ND ND ug/L 10/06/11 0.72 -- 5 ND 1.5 1 ND 1.1 1 ND ND ug/L 04/16/12 0.15 -- 5 ND 0.86 1 0.55 1 0.63 1 ND ND ug/L 10/24/12 0.15 -- 5 ND 0.62 1 ND 0.8 1 ND ND ug/L 04/24/13 0.27 -- 5 ND 0.73 1 ND 0.85 1 ND ND ug/L 09/10/13 0.15 -- 5 ND 0.98 1 0.48 1 0.87 1 ND ND ug/L 04/22/14 0.15 -- 5 ND 0.52 1 ND ND ND ND ug/L 10/06/14 0.15 -- 5 ND 0.61 1 ND ND ND ND ug/L 04/07/15 0.15 -- 5 ND 0.44 1 ND 0.52 1 ND ND ug/L 10/07/15 0.15 -- 5 ND 0.94 1 0.41 1 0.87 1 ND ND ug/L 04/26/16 0.15 -- 5 ND 0.51 1 ND 0.43 1 ND ND ug/L 09/28/16 0.15 -- 5 0.15 0.77 1 ND ND ND ND ug/L 04/27/17 0.15 -- 5 ND 0.57 1 ND 0.49 1 ND ND ug/L 10/17/17 0.15 -- 5 ND 0.47 1 ND 0.64 1 ND ND ug/L 04/16/18 0.15 -- 5 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 1 0.51 1 ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.15 1.0 -- ND 0.87 1 0.44 1 ND ND ND ug/L 04/29/21 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.15 1.0 -- ND ND ND ND ND ND GOLDER 14 MEMBER OF WSP 10 of 12 March 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 Detected Monitoring Reporting Sample Method Practical SWS Upgradient Well Downgradient Wells Constituent/Parameter Units Date Detection Quantitation Reporting Blanks Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Methylene Chloride ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND NC 2L = 5 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND EPA MCL = 5 ug/L ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND 0.51 1 ND ND 0.088 ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/02/08 0.24 -- 1 ND ND ND ND ND ND ug/L 12/05/08 0.53 -- 1 ND ND ND ND ND ND ug/L 04/16/09 0.53 -- 1 -- ND ND ND ND ND ug/L 10/07/09 0.53 -- 1 ND 0.76 1 ND ND ND ND ug/L 04/28/10 0.07 -- 1 ND ND ND ND ND ND ug/L 10/11/10 0.53 -- 1 ND 0.77 1 ND ND ND ND ug/L 05/10/11 0.14 -- 1 ND ND ND ND ND ND ug/L 10/06/11 0.14 -- 1 ND ND ND ND ND ND ug/L 04/16/12 0.23 -- 1 ND 0.37 1 ND ND ND ND ug/L 10/24/12 0.23 -- 1 ND ND ND ND ND ND ug/L 04/24/13 0.50 -- 1 ND ND ND ND ND ND ug/L 09/10/13 0.23 -- 1 ND ND ND ND ND ND ug/L 04/22/14 0.23 -- 1 ND ND ND ND ND ND ug/L 10/06/14 0.23 -- 1 ND ND ND ND ND ND ug/L 04/07/15 0.23 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.23 -- 1 ND ND ND ND ND ND ug/L 04/26/16 0.23 -- 1 ND ND ND ND ND ND ug/L 09/28/16 0.23 -- 1 ND ND ND ND ND ND ug/L 04/27/17 0.23 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.23 1.0 -- ND ND 0.78 B ND ND 0.5 1 ug/L 10/09/19 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.23 1.0 -- ND ND ND ND ND ND Vinyl Chloride ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND NC 2L = 0.03 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND EPA MCL = 2 ug/L ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 0.15 1 0.72 1 0.54 1 0.63 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 -- 1 ND 0.64 1 0.9 1 0.65 J ND ND ug/L 12/05/08 0.3 -- 1 ND 0.36 ND 0.67 J ND ND ug/L 04/16/09 0.3 -- 1 -- ND 0.46 J ND ND ND ug/L 10/07/09 0.3 -- 1 ND 0.49 J ND ND ND ND ug/L 04/28/10 0.083 -- 1 ND 0.52 1 0.62 1 0.44 J ND ND ug/L 10/11/10 0.3 -- 1 ND 0.51 J ND ND ND ND ug/L 05/10/11 0.6 -- 1 ND ND ND ND ND ND ug/L 10/06/11 0.6 -- 1 ND ND ND ND ND ND ug/L 04/16/12 0.32 -- 1 ND 0.45 1 0.48 J ND ND ND ug/L 10/24/12 0.32 -- 1 ND ND ND ND ND ND ug/L 04/24/13 0.28 -- 1 ND 0.45 J ND 0.45 J ND ND ug/L 09/10/13 0.32 -- 1 ND ND 0.45 J ND ND ND ug/L 04/22/14 0.32 -- 1 ND ND ND ND ND ND ug/L 10/06/14 0.32 -- 1 ND ND ND ND ND ND ug/L 04/07/15 0.32 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.32 -- 1 ND ND 0.65 1 0.59 J ND ND ug/L 04/26/16 0.32 -- 1 ND ND ND 0.47 J ND ND ug/L 09/28/16 0.32 -- 1 ND ND ND 0.52 J ND ND ug/L 04/27/17 0.32 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.32 -- 1 ND ND ND 0.45 J ND ND ug/L 04/16/18 0.32 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.32 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.32 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 0.32 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.32 1.0 -- ND ND ND ND ND ND ug/L 10/13/20 0.32 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.32 1.0 -- ND ND ND ND ND ND ug/L 10/12/21 0.32 1.0 -- ND ND ND ND ND ND GOLDER 14 MEMBER OF WSP 11 of 12 March 2022 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.104 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Method Detection Practical Quantitation SWS Reporting Upgradient Well Downgradient Wells Blanks Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 1,4-Dioxane ug/L 10/18/18 1.2 2.0 -- ND 240 250 300 60 ND NC 2L = 3 ug/L ug/L 04/08/19 1.2 2.0 -- ND 210 33 46 55 ND ug/L 10/09/19 1.2 2.0 -- ND 250 140 360 43 ND ug/L 04/20/20 0.80 2.0 -- ND 210 64 70 42 ND ug/L 10/13/20 0.80 2.0 -- ND 200 120 200 39 ND ug/L 04/29/21 0.80 2.0 -- ND 250 200 30 37 ND ug/L 10/12/21 0.80 2.0 -- 0.80 J 240 200 350 43 ND Notes: mg/L = milligrams per liter ug/L = micrograms per liter NC 2L = North Carolina Water Quality Standard EPA MCL = United States Environmental Protection Agency Maximum Contaminant Limit J = Prior to the 11/18 event, J flags are estimated values below the SWS Reporting limit. Starting with the 11/18 event, J flags are estimated values between MDL and PQL. B = blank -qualified data ND = not detected above the laboratory detection limit or stated reporting limit -- = no data available or no limit established # = EPA Action Level * = EPA Secondary MCL Blanks = field, trip and method blanks Bold = concentrations above applicable IMAC and/or NC 2L have been bolded. Shaded = concentrations above applicable EPA MCL have been shaded. MDL = laboratory method detection limit Data prior to April 2017 provided by S&ME Engineering Laboratory method blank data was unavailable prior to April 2017. However, B flags for the 04/16/09, 10/07/09, and 10/11/10 were present on laboratory electronic files. The following dilutions were noted for the October 2021 event: 1,4-dioxane by (10x) in I-1, 1-2, and 1-3 SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on 01/18/07 GOLDER MEMBER OF WSP 12 of 12 March 2022 19131339.104 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Monitoring Reporting Sample Upgradient Well Downgradient Wells MW-13 1-1 1-2 1-3 1-4 Constituent/Parameter Units Date pH (Field) S. U. 03/27/00 6.61 6.31 6.69 7.17 6.67 S. U. 09/13/00 15.70 6.59 5.84 6.68 6.49 S. U. 03/12/01 6.55 5.62 6.19 6.34 -- S. U. 09/13/01 6.29 5.58 6.01 6.25 6.80 S. U. 03/07/02 7.48 5.59 6.02 6.26 6.60 S. U. 09/18/02 6.44 5.77 6.08 6.37 6.64 S. U. 04/15/03 -- 6.08 6.39 6.61 6.71 S. U. 10/15/03 6.75 5.79 6.31 6.64 6.75 S. U. 03/24/04 8.02 7.80 7.81 7.80 8.17 S. U. 09/22/04 6.96 5.94 6.76 6.60 6.96 S. U. 05/10/05 8.58 8.03 8.14 8.27 8.50 S. U. 10/11 /05 6.5 5.54 5.95 6.18 6.60 S. U. 04/24/06 -- 5.65 6.21 6.40 6.89 S. U. 10/16/06 -- 5.49 5.96 6.19 6.60 S. U. 04/10/07 6.35 5.62 6.19 6.46 6.95 S. U. 09/25/07 6.49 5.64 6.18 6.36 6.49 S. U. 05/02/08 6.48 5.60 6.31 6.61 7.01 S. U. 12/05/08 7.29 5.80 6.63 6.50 7.07 S. U. 04/16/09 7.29 6.40 6.82 7.11 7.46 S. U. 10/07/09 9.18 7.44 7.97 8.15 8.81 S. U. 04/28/10 6.6 5.67 6.08 6.30 6.78 S. U. 10/05/10 7.5 6.38 6.94 7.06 7.55 S. U. 05/10/11 -- 7.35 8.37 7.96 8.55 S. U. 10/06/11 7.61 6.14 7.12 6.89 7.69 S. U. 04/16/12 7.83 6.40 7.03 7.41 7.87 S. U. 10/24/12 7.88 7.49 8.25 7.66 8.59 S. U. 04/24/13 8.29 7.07 8.05 8.00 8.77 S. U. 09/09/13 8.33 6.76 7.22 7.31 8.12 S. U. 04/22/14 8.4 5.55 6.64 7.03 8.52 S. U. 10/01 /14 7.69 6.04 6.70 6.85 7.43 S. U. 04/07/15 6.76 5.82 6.15 6.33 6.67 S. U. 10/06/15 6.47 5.48 5.89 5.97 6.35 S. U. 04/18/16 6.36 5.87 6.19 6.38 6.82 S. U. 09/26/16 6.54 5.64 5.99 6.11 6.57 S. U. 04/25/17 6.46 5.82 6.25 6.32 6.73 S. U. 10/16/17 6.55 5.75 6.28 6.22 6.68 S. U. 04/16/18 6.50 5.70 6.09 6.31 6.66 S. U. 10/18/18 6.39 5.84 6.08 6.21 6.70 S. U. 04/08/19 6.67 5.78 6.53 6.54 6.79 S. U. 10/09/19 6.43 5.75 6.16 6.20 6.67 S. U. 04/20/20 6.49 5.91 6.34 6.51 6.72 S. U. 10/13/20 5.90 5.73 6.16 6.29 6.71 S. U. 04/29/21 6.77 5.90 6.30 6.82 7.21 S. U. 10/12/21 6.29 5.79 6.09 6.13 6.55 Specific Conductance (Field) us/cm 03/27/00 353 877 1361 1687 1989 us/cm 09/13/00 335 971 1485 660 875 us/cm 03/12/01 7520 -- -- -- -- US/cm 09/13/01 88838 73234 68639 71673 65394 US/cm 03/07/02 676 1692 2240 2127 3445 US/cm 09/18/02 658 1619 2300 2913 2319 us/cm 04/15/03 -- 1650 1464 2040 1950 us/cm 10/15/03 480 1650 1890 2640 2720 us/cm 03/24/04 428 1650 1990 624 2690 us/cm 09/22/04 472 1690 1179 2720 1094 us/cm 05/10/05 434 1510 2030 2570 5560 us/cm 10/11/05 576 1930 2430 3020 1700 us/cm 04/24/06 -- 2080 2540 3010 3010 us/cm 10/16/06 -- 2090 2590 3020 2600 us/cm 04/10/07 514 219 252 289 267 us/cm 09/25/07 582 2210 2570 3170 2570 us/cm 05/02/08 45.7 289 270 295 267 us/cm 12/05/08 5390 2490 1410 3470 2200 us/cm 04/16/09 539 3440 2290 2760 2420 us/cm 10/07/09 552 2580 2720 3410 2160 us/cm 04/28/10 439 2220 2270 2640 1840 us/cm 10/05/10 446 2240 2380 3000 630 us/cm 05/10/11 -- 3010 1020 2670 1980 us/cm 10/06/11 447 2620 1290 2980 1270 us/cm 04/16/12 416 3060 2230 2480 1960 us/cm 10/24/12 399 3270 280 2910 2030 us/cm 04/24/13 410 3210 1336 2740 1880 us/cm 09/09/13 414 3280 2370 2900 1840 us/cm 04/22/14 395 3300 2930 2440 2010 us/cm 10/01/14 425 3400 2580 3320 193 US/cm 04/07/15 268 2140 1610 1920 1260 US/cm 10/06/15 304 2341 2017 2424 1239 us/cm 04/18/16 323 2515 1803 1798 1338 us/cm 09/26/16 340 2581 2076 2324 1390 us/cm 04/25/17 362 3197 1039 2454 1286 us/cm 10/16/17 367 3260 1897 2843 1706 US/cm 04/16/18 321 2992 2089 2224 1633 US/cm 10/18/18 317 2662 1985 2146 1363 us/cm 04/08/19 368 3111 895 1301 1813 us/cm 10/09/19 287 2937 1892 2475 1834 US/cm 04/20/20 424 3461 945 1330 1787 us/cm 10/13/20 393 2546 1406 1729 1838 us/cm 04/29/21 425 3558 2169 922 1723 us/cm 10/12/21 345 3001 1955 2305 1682 GOLDER MEMBER OF WSP 1 of 3 March 2022 19131339.104 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Monitoring Reporting Sample Upgradient Well Downgradient Wells MW-13 1-1 1-2 1-3 1-4 Constituent/Parameter Units Date Temperature (Field) °c 03/27/00 14.30 13.95 15.40 14.57 11.62 °c 09/13/00 15.70 17.43 18.05 17.22 17.91 °c 03/12/01 15.04 13.65 15.04 14.75 -- °c 09/13/01 15.73 18.52 18.86 17.28 19.88 °c 03/07/02 14.25 13.33 13.83 14.22 11.08 °c 09/18/02 10.56 12.05 12.80 11.62 12.97 °c 04/15/03 -- 13.83 14.52 15.71 12.16 °c 10/15/03 14.67 16.45 17.50 16.33 17.17 °c 03/24/04 14.42 13.17 14.11 13.72 10.83 °c 09/22/04 16.30 15.95 17.17 15.72 17.61 °c 05/10/05 19.24 17.81 20.04 18.42 20.55 °c 10/11/05 12.80 18.38 19.14 19.47 19.14 °c 04/24/06 -- 15.69 17.92 17.35 15.53 °c 10/16/06 -- 15.79 16.82 16.15 17.20 °c 04/10/07 14.57 15.93 15.79 16.05 13.48 °c 09/25/07 23.41 22.48 24.49 19.37 21.12 °c 05/02/08 14.55 18.70 21.71 19.93 20.64 °c 12/05/08 14.53 11.64 12.02 12.46 11.01 °c 04/16/09 14.53 14.76 16.12 14.76 13.94 °c 10/07/09 13.65 18.32 19.72 18.38 20.45 °c 04/28/10 14.56 14.70 16.97 13.99 14.56 °c 10/05/10 18.37 18.19 17.54 18.28 17.41 °c 05/10/11 -- 19.77 21.08 19.87 18.46 °c 10/06/11 18.70 20.90 20.23 18.60 19.28 °c 04/16/12 14.07 19.88 22.31 20.35 20.01 °c 10/24/12 12.98 12.90 19.12 20.00 19.20 °c 04/24/13 13.74 16.77 18.17 17.81 11.65 °c 09/09/13 23.09 18.62 25.21 19.86 20.92 °c 04/22/14 16.52 19.69 26.28 21.77 10.79 °c 10/01/14 11.86 17.04 18.64 17.64 18.84 °c 04/07/15 13.96 16.12 15.98 15.68 16.22 °c 10/06/15 15.81 17.01 16.63 14.50 17.89 °c 04/18/16 16.29 18.46 18.34 13.97 16.12 °c 09/26/16 18.06 20.33 23.90 20.57 21.39 °c 04/25/17 14.35 14.78 16.55 15.23 15.11 °c 10/16/17 14.77 15.93 17.89 16.67 18.34 °c 04/16/18 14.3 12.7 14.9 14.9 14.5 °c 10/18/18 16.3 15.9 18.4 16.3 18.7 °c 04/08/19 15.7 13.9 15.5 15.4 14.9 °c 10/09/19 17.7 17.0 20.0 16.5 19.9 °c 04/20/20 15.2 14.5 14.7 14.9 14.8 °c 10/13/20 17.1 16.8 18.1 17.5 18.7 °c 04/29/21 14.8 14.1 15.4 15.4 14.7 °c 10/12/21 15.5 16.6 19.3 17.1 18.1 Turbidity (Field) NTU 05/10/05 1.01 3.97 250 36.8 574 NTU 10/11/05 10.0 3.02 411 126 551 NTU 04/24/06 -- 7.18 250 39 398 NTU 10/16/06 -- 1.78 200 23.4 493 NTU 04/10/07 -- -- -- -- -- NTU 09/25/07 -- -- -- -- -- NTU 05/02/08 -- -- -- -- -- NTU 12/05/08 4.42 -- -- -- -- NTU 04/16/09 -- -- -- -- -- NTU 10/07/09 -- -- -- -- -- NTU 04/28/10 6.98 35.2 33.8 8.54 199 NTU 10/05/10 3.28 4.63 44.1 10.01 196 NTU 05/10/11 -- -- -- -- -- NTU 10/06/11 6.75 7.00 48.6 21.5 264 NTU 04/16/12 4.28 14.45 30.1 16.84 152 NTU 10/24/12 4.65 13.63 152 11.85 160 NTU 04/24/13 9.00 21.2 61.5 12.33 248 NTU 09/09/13 4.16 5.42 16.03 8.80 63.9 NTU 04/22/14 4.72 19.6 42.1 5.37 48 NTU 10/01/14 5.76 5.14 26 61 11.92 NTU 04/07/15 3.34 24.7 106 6.52 34 NTU 10/06/15 1.62 2.41 54.3 2.96 27.7 NTU 04/18/16 2.01 12.09 40.9 1.05 51 NTU 09/26/16 21.3 2.59 38.5 1.20 14 NTU 04/25/17 10.3 21.4 40.9 1.89 48.9 NTU 10/16/17 3.58 0.58 22.9 3.78 7.04 NTU 04/16/18 2.56 8.37 102 6.37 8.86 NTU 10/18/18 3.07 2.13 19.5 366 15.7 NTU 04/08/19 3.46 7.18 45.0 6.47 17.0 NTU 10/09/19 1.35 1.07 16.7 1.84 9.18 NTU 04/20/20 1.33 9.70 30.9 2.79 31.8 NTU 10/13/20 0.98 9.89 14.9 1.90 23.8 NTU 04/29/21 0.80 4.90 16.0 2.96 9.95 NTU 10/12/21 1.05 3.08 8.24 2.04 9.79 GOLDER M EM 9ER DF WSP 2 of 3 March 2022 19131339.104 TABLE 5 Summary of Groundwater Field Parameters White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Monitoring Reporting Sample Upgradient Well Downgradient Wells MW-13 1-1 1-2 1-3 1-4 Constituent/Parameter Units Date Oxidation Reduction my 05/10/05 -65 -250 -322 -313 -278 Potential (Field) my 10/11/05 197 -78 -26 -54 -7 my 04/24/06 -- 58 -129 -89 -107 my 10/16/06 -- -65 -159 -138 -207 my 04/10/07 -- -- -- -- -- mv 09/25/07 -- -- -- -- -- mv 05/02/08 -- -- -- -- -- mv 12/05/08 105 -- -- -- -- mv 04/16/09 -- -- -- -- -- mv 10/07/09 -- -- -- -- -- mv 04/28/10 288 281 84 108 51 my 10/05/10 244 287 105 123 82 my 05/10/11 -- -- -- -- -- mv 10/06/11 166 185 4 87 -63 my 04/16/12 171 134 33 62 -65 my 10/24/12 127 73 -37 63 -109 my 04/24/13 178 89 -70 49 -102 my 09/09/13 116 106 25 63 -90 my 04/22/14 118 164 92 125 -78 my 10/01/14 109 45 -70 -45 -133 my 04/07/15 50 36 0 16 -73 my 10/06/15 -38.4 123 -12 54 106 my 04/18/16 135 63 6 32 -107 my 09/26/16 42.2 22 -32 20 -59 my 04/25/17 154.9 32.9 -18.0 41.8 -68.0 my 10/16/17 154.1 81.7 -42.2 54.2 -88.4 my 04/16/18 364.8 214.4 47.6 201.6 -108.9 my 10/18/18 158.7 -4.1 -29.7 150.3 -56.2 my 04/08/19 41.2 96.8 -43.8 68.2 -102.4 my 10/09/19 196.3 46.2 10.4 32.0 -118.9 my 04/20/20 91.3 10.8 -10.1 83.7 -134.3 my 10/13/20 39.7 37.4 -28.8 69.2 -110.9 my 04/29/21 188.9 26.4 -20.1 50.0 -118.2 my 10/12/21 222.5 17.2 -30.1 50.2 -102.2 Dissolved Oxygen (Field) mg/L 05/10/05 3.61 0.41 0.23 0.38 0.60 mg/L 10/11/05 5.69 2.21 0.65 0.82 0.42 mg/L 04/24/06 -- 0.60 0.23 0.40 0.18 mg/L 10/16/06 -- 1.10 0.40 0.41 0.14 mg/L 04/10/07 -- -- -- -- -- mg/L 09/25/07 -- -- -- -- -- mg/L 05/02/08 -- -- -- -- -- mg/L 12/05/08 5.01 -- -- -- -- mg/L 04/16/09 -- -- -- -- -- mg/L 10/07/09 -- -- -- -- -- mg/L 04/28/10 6.94 4.89 4.32 1.27 0.08 mg/L 10/05/10 3.49 1.91 2.27 0.55 0.05 mg/L 05/10/11 -- -- -- -- -- mg/L 10/06/11 4.49 1.19 3.38 0.65 0.22 mg/L 04/16/12 4.75 0.97 2.51 1.59 0.61 mg/L 10/24/12 3.75 1.45 0.77 0.90 0.21 mg/L 04/24/13 4.36 1.31 1.75 0.90 0.38 mg/L 09/09/13 5.95 3.46 4.18 2.84 0.41 mg/L 04/22/14 8.69 1.41 3.71 2.94 1.65 mg/L 10/01/14 4.59 1.67 3.42 0.42 0.17 mg/L 04/07/15 5.52 4.83 2.76 3.97 0.91 mg/L 10/06/15 3.80 0.99 1.19 0.69 0.37 mg/L 04/18/16 6.18 1.11 0.98 0.59 0.19 mg/L 09/26/16 4.81 0.50 0.61 0.64 0.14 mg/L 04/25/17 3.65 0.40 2.69 0.60 0.20 mg/L 10/16/17 2.85 0.68 0.51 0.22 0.05 mg/L 04/16/18 3.38 0.47 0.63 0.59 0.16 mg/L 10/18/18 3.55 0.92 1.91 0.39 0.70 mg/L 04/08/19 3.43 0.14 0.84 0.32 1.01 mg/L 10/09/19 2.37 2.98 3.04 0.55 1.33 mg/L 04/20/20 2.89 0.65 1.88 0.36 0.12 mg/L 10/13/20 2.33 0.66 0.75 0.42 0.32 mg/L 04/29/21 1.58 2.23 0.61 0.34 2.49 mg/L 10/12/21 1.37 2.14 3.27 0.45 0.50 Notes: S.U. = Standard Units NTU = Nephelometric Turbidity Units uS/cm = microsiemens per centimeter mg/L = milligrams per liter my = Millivolts -- = no data available Data prior to April 2017 provided by S&ME Engineering GOLDER MEMBER OF WSP 3 of 3 March 2022 TABLE 6 19131339.104 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Antimony ug/L 03/01/00 -- -- 30 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 30 ND ND ND ND ND ND ug/L 03/01/01 -- -- 30 ND ND ND ND ND ND ug/L 09/01/01 -- -- 30 ND ND ND ND ND ND ug/L 03/01/02 -- -- 30 ND ND ND ND ND ND ug/L 09/01/02 -- -- 30 ND ND ND ND ND ND ug/L 04/01/03 -- -- 30 ND ND ND ND ND ND ug/L 10/01/03 -- -- 30 ND ND ND ND ND ND ug/L 03/01/04 -- -- 30 ND ND ND ND ND ND ug/L 09/01/04 -- -- 30 ND ND ND ND ND ND ug/L 05/01/05 -- -- 30 ND ND ND ND ND ND ug/L 10/01/05 -- -- 30 ND ND ND ND ND ND ug/L 04/01/06 -- -- 30 ND ND ND ND ND ND ug/L 10/01/06 -- -- 30 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.68 -- 6 -- ND ND ND ND ND ug/L 12/04/08 0.68 -- 6 -- ND ND ND ND ND ug/L 04/13/09 0.68 -- 6 -- ND ND ND ND ND ug/L 10/20/09 0.073 -- 6 0.461 B 0.185 B 0.351 B 0.346 B 0.337 B -- ug/L 04/30/10 0.22 -- 6 -- ND 0.272 1 0.225 1 0.258 1 ND ug/L 10/11/10 0.22 -- 6 -- 0.329 1 0.254 1 0.233 1 0.221 1 ND ug/L 05/12/11 0.22 -- 6 0.448 1 ND 0.287 1 0.241 1 0.261 1 ND ug/L 10/07/11 1.1 -- 6 ND ND ND 0.287 1 0.24 1 ND ug/L 04/19/12 0.22 -- 6 0.279 1 ND 0.34 1 0.308 1 0.284 1 ND ug/L 10/26/12 0.22 -- 6 ND ND ND ND ND ND ug/L 04/25/13 0.22 -- 6 ND ND ND ND ND ND ug/L 09/12/13 0.22 -- 6 ND 0.344 1 0.28 1 ND ND ND ug/L 04/25/14 0.22 -- 6 0.695 1 1.62 1 0.582 1 0.332 1 0.264 1 ND ug/L 10/02/14 0.22 -- 6 0.526 1 ND 0.378 1 0.268 1 0.267 1 ND ug/L 04/06/15 0.22 -- 6 0.312 1 ND 0.232 1 ND 0.754 1 ND ug/L 10/07/15 0.22 -- 6 0.268 1 ND 0.372 1 0.259 1 ND ND ug/L 04/20/16 0.22 -- 6 0.22 ND ND 0.424 1 0.261 1 ND ug/L 09/26/16 0.22 -- 6 ND ND ND ND 0.479 1 ND ug/L 04/28/17 0.37 -- 6 0.708 1 ND 0.485 1 ND ND ND ug/L 10/17/17 0.37 -- 6 0.455 1 ND 0.490 1 ND 0.654 1 ND ug/L 04/16/18 1.85 -- 6 ND ND ND ND ND ND ug/L 10/18/18 1.85 5.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.74 2.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.74 2.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.74 2.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.74 2.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.74 2.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.74 2.0 -- ND ND ND ND ND ND Arsenic ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND Human Health = 10 ug/L ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND 2.4 1 ND 2.2 1 ND ug/L 12/04/08 2.8 -- 10 -- ND ND ND ND ND ug/L 04/13/09 2.8 -- 10 -- ND ND ND ND ND ug/L 10/20/09 2.8 -- 10 ND ND ND ND ND ND ug/L 04/30/10 2.8 -- 10 -- ND ND ND ND ND ug/L 10/11/10 2.8 -- 10 -- ND ND ND ND ND ug/L 05/12/11 2.8 -- 10 3.04 1 3.39 1 ND ND ND ug/L 10/07/11 2.8 -- 10 ND ND ND ND ND ND ug/L 04/19/12 2.8 -- 10 ND ND 3.12 1 ND ND ND ug/L 10/26/12 2.8 -- 10 ND ND ND ND 5.25 1 ND ug/L 04/25/13 2.8 -- 10 ND ND ND ND ND ND ug/L 09/12/13 5.4 -- 10 ND ND ND ND ND ND ug/L 04/25/14 5.4 -- 10 ND ND ND ND ND ND ug/L 10/02/14 5.4 -- 10 6.11 1 ND ND ND ND ND ug/L 04/06/15 6.8 -- 10 ND ND ND ND ND ND ug/L 10/07/15 6.8 -- 10 ND ND ND ND ND ND ug/L 04/20/16 6.8 -- 10 ND ND ND ND ND ND ug/L 09/26/16 6.8 -- 10 ND ND ND ND ND ND ug/L 04/28/17 6.8 -- 10 ND ND ND ND ND ND ug/L 10/17/17 6.8 -- 10 ND ND ND ND ND ND ug/L 04/16/18 6.8 -- 10 ND ND ND 9.17 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 ug/L 04/29/21 7.6 10 -- ND ND ND ND ND ND u /L 10/14/21 7.6 10 -- ND ND ND ND ND ND GOLDER MEMBER OF WSP 1 of 12 March 2022 TABLE 6 19131339.104 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Downstream Surface Water Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Barium ug/L 03/01/00 -- -- 500 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 500 ND ND ND ND ND ND Human Health = 200 mg/L ug/L 03/01/01 -- -- 500 ND ND ND ND ND ND ug/L 09/01/01 -- -- 500 ND ND ND ND ND ND ug/L 03/01/02 -- -- 500 ND ND ND ND ND ND ug/L 09/01/02 -- -- 500 ND ND ND ND ND ND ug/L 04/01/03 -- -- 500 ND ND ND ND ND ND ug/L 10/01/03 -- -- 500 ND ND ND ND ND ND ug/L 03/01/04 -- -- 500 ND ND ND ND ND ND ug/L 09/01/04 -- -- 500 ND ND ND ND ND ND ug/L 05/01/05 -- -- 500 ND ND ND ND ND ND ug/L 10/01/05 -- -- 500 ND ND ND ND ND ND ug/L 04/01/06 -- -- 500 ND ND ND ND ND ND ug/L 10/01/06 -- -- 500 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 41.8 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 -- 100 -- 51.2 B 53 B 92.5 B 65.5 B ND ug/L 12/04/08 1 -- 100 -- 35.9 1 21.8 1 27 1 27 1 ND ug/L 04/13/09 4.2 -- 100 -- 53.4 1 44.8 1 41.6 1 42 1 ND ug/L 10/20/09 1 -- 100 68.3 1 36.3 1 21.8 1 27.2 1 26.9 1 ND ug/L 04/30/10 1 -- 100 -- 48.5 1 30.9 1 37.1 1 44.2 1 ND ug/L 10/11/10 1 -- 100 -- 47.1 1 18.8 1 29.3 1 30.6 1 ND ug/L 05/12/11 1 -- 100 77.3 1 39.3 1 40.3 1 35.3 1 37 1 ND ug/L 10/07/11 1 -- 100 74.2 1 76.4 1 21.4 1 42.7 1 32.2 1 ND ug/L 04/19/12 1 -- 100 43.7 1 48.4 1 23.5 1 33.7 1 33.7 1 ND ug/L 10/26/12 1 -- 100 48.2 1 51.2 1 25.2 1 34.8 1 35.1 1 ND ug/L 04/25/13 1 -- 100 57 1 65.1 1 28.5 1 40.8 1 37.8 1 ND ug/L 09/12/13 1 -- 100 56.7 1 40.7 1 25.3 1 31.5 1 33.9 1 ND ug/L 04/25/14 1 -- 100 100 60.8 1 49.3 1 52.7 1 48.8 1 ND ug/L 10/02/14 1 -- 100 112 45.9 1 22.3 1 24.4 1 25.1 1 ND ug/L 04/06/15 1 -- 100 59.3 1 44.3 1 42.2 1 35.5 1 47.3 1 ND ug/L 10/07/15 1 -- 100 85.7 1 46.2 1 28.3 1 319 41 1 ND ug/L 04/20/16 1 -- 100 113 46.3 1 47.5 1 31 1 35.4 1 ND ug/L 09/26/16 1 -- 100 44.8 1 52.8 1 17.6 1 27.9 1 33.9 1 ND ug/L 04/28/17 1 -- 100 46.5 1 45.4 1 59.9 1 50.2 1 45.0 1 ND ug/L 10/17/17 1 -- 100 40.1 1 33.6 1 55.8 1 41.2 1 37.8 1 ND ug/L 04/16/18 1 -- 100 42.9 1 45.4 1 42.1 1 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 ug/L 10/15/20 1.1 10 -- 47.9 48.5 47.3 52.0 52.9 ND ug/L 04/29/21 1.1 10 -- 47.5 42.5 41.6 45.0 41.8 ND ug/L 10/14/21 1.1 10 -- 43.8 41.4 51.2 43.1 44.2 ND Beryllium ug/L 03/01/00 -- -- 2 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 2 ND ND ND ND ND ND Acute = 65 ug/L ug/L 03/01/01 -- -- 2 ND ND ND ND ND ND Chronic = 6.5 ug/L ug/L 09/01/01 -- -- 2 ND ND ND ND ND ND ug/L 03/01/02 -- -- 2 ND ND ND ND ND ND ug/L 09/01/02 -- -- 2 ND ND ND ND ND ND ug/L 04/01/03 -- -- 2 2.4 2.4 2.3 2.3 ND ND ug/L 10/01/03 -- -- 2 ND ND ND ND ND ND ug/L 03/01/04 -- -- 2 ND ND ND ND ND ND ug/L 09/01/04 -- -- 2 ND ND ND ND ND ND ug/L 05/01/05 -- -- 2 ND ND ND ND ND ND ug/L 10/01/05 -- -- 2 ND ND ND ND ND ND ug/L 04/01/06 -- -- 2 ND ND ND ND ND ND ug/L 10/01/06 -- -- 2 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.7 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.1 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.08 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.1 -- 1 0.113 1 ND ND ND ND 0.42 1 ug/L 04/30/10 0.1 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.1 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.1 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.1 -- 1 ND 0.149 1 ND ND ND ND ug/L 04/19/12 0.1 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.1 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.1 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.1 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.1 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.1 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.1 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.1 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.1 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.1 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.13 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.13 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.16 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.16 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.16 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.16 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.16 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.16 1.0 -- ND ND ND ND ND ND u /L 10/14/21 0.16 1.0 -- ND ND ND ND ND ND GOLDER MEMBER OF WSP 2 of 12 March 2022 TABLE 6 19131339.104 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Cadmium ug/L 03/01/00 -- -- 1 ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 1 ND ND ND ND ND ND SW-1 = 3.12 ug/L 03/01/01 -- -- 1 ND ND ND ND ND ND SW-2 = 2.81 ug/L 09/01/01 -- -- 1 1.1 ND ND ND ND ND SW-3 = 2.48 ug/L 03/01/02 -- -- 1 ND ND ND ND ND ND SW-4 = 3.74 ug/L 09/01/02 -- -- 1 ND 1.2 ND ND ND ND SW-5 = 3.17 ug/L 04/01/03 -- -- 1 4.1 3.8 4.0 3.9 ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 1 ND ND ND ND ND ND SW-1 = 0.47 ug/L 03/01/04 -- -- 1 1.0 ND 1.0 ND ND ND SW-2 = 0.43 ug/L 09/01/04 -- -- 1 ND ND ND ND ND ND SW-3 = 0.39 ug/L 05/01/05 -- -- 1 ND ND ND ND ND ND SW-4 = 0.56 ug/L 10/01/05 -- -- 1 ND ND ND ND ND ND SW-5 = 0.48 ug/L 04/01/06 -- -- 1 ND ND ND ND ND ND ug/L 10/01/06 -- -- 1 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.5 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.36 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.09 -- 1 -- 0.14 1 0.17 1 0.26 1 0.21 1 ND ug/L 10/20/09 0.36 -- 1 0.477 J ND ND ND ND ND ug/L 04/30/10 0.36 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.36 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.36 -- 1 0.471 J ND ND ND ND ND ug/L 10/07/11 0.36 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.36 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.36 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.36 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.36 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.36 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.36 -- 1 0.661 J ND ND ND ND ND ug/L 04/06/15 0.36 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.36 -- 1 0.784 J ND ND 5.66 ND ND ug/L 04/20/16 0.36 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.36 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.36 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.36 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.36 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.36 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.36 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.36 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.36 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.36 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.36 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.36 1.0 -- ND ND ND ND ND ND Chromium ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 10 ND ND 25 14 20 ND SW Standard, Acute (ug/L) ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-1 = 643.41 ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND SW-2 = 583.72 ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND SW-3 = 517.90 ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND SW-4 = 763.69 ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND SW-5 = 652.48 ug/L 10/01/03 -- -- 10 ND ND 10 ND ND ND SW Standard, Chronic (ug/L) ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND SW-1 = 83.69 ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND SW-2 = 75.93 ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND SW-3 = 67.37 ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND SW-4 = 99.34 ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND SW-5 = 84.87 ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND 15.0 ND ND ug/L 12/04/08 1 -- 10 -- ND 2.3 1 ND 1.40 1 ND ug/L 04/13/09 0.7 -- 10 -- 1.40 1 1.60 1 1.10 1 1.10 1 ND ug/L 10/20/09 1 -- 10 8.16 1 ND ND ND ND ND ug/L 04/30/10 1 -- 10 -- ND 1.14 1 ND 1.95 1 ND ug/L 10/11/10 1 -- 10 -- 2.52 1 1.00 1.00 1.00 ND ug/L 05/12/11 1 -- 10 4.37 1 ND 1.09 1 ND ND ND ug/L 10/07/11 1 -- 10 6.97 1 6.25 1 1.21 1 3.00 1 ND ND ug/L 04/19/12 1 -- 10 1.11 1 ND ND ND ND ND ug/L 10/26/12 1 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.4 -- 10 1.44 1 2.12 1 ND ND 2.57 1 ND ug/L 09/12/13 1.4 -- 10 ND ND ND ND ND ND ug/L 04/25/14 1.4 -- 10 11.7 ND 4.26 1 1.7 1 ND ND ug/L 10/02/14 1.4 -- 10 20.6 B 2.13 B 13.4 B 2.50 B 2.70 B -- ug/L 04/06/15 1.4 -- 10 3.66 1 ND 3.36 1 ND 3.51 1 ND ug/L 10/07/15 1.4 -- 10 7.93 1 ND ND 66.1 ND ND ug/L 04/20/16 1.4 -- 10 14.6 ND 6.73 1 ND ND ND ug/L 09/26/16 1.4 -- 10 ND ND ND ND ND ND ug/L 04/28/17 1.4 -- 10 ND ND 5.88 1 1.43 1 ND ND ug/L 10/17/17 1.4 -- 10 ND ND 3.94 1 ND ND ND ug/L 04/16/18 1.4 -- 10 1.74 1 ND 1.80 1 ND 1.92 1 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 1 1.77 1 ND ND 2.09 1 ND ug/L 10/08/19 1.4 10 -- 1.83 1 ND ND ND ND ND ug/L 04/20/20 1.4 10 -- 1.65 1 ND 1.70 1 ND ND ND ug/L 10/15/20 1.4 10 -- 3.09 1 1.64 1 2.85 1 2.29 1 2.22 1 ND ug/L 04/29/21 1.4 10 -- 2.29 1 ND ND ND ND ND ug/L 10/14/21 1.4 10 -- 2.33 1 ND 2.82 1 ND ND ND GOLDER MEMBER OF WSP 3 of 12 March 2022 TABLE 6 19131339.104 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Downstream Surface Water Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Cobalt ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND 17 ND ND ND ND ug/L 04/01/03 -- -- 10 14 14 15 14 ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 3.5 J ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND 7.1 J 3.8 J ND ug/L 12/04/08 1.1 -- 10 -- ND ND ND 2.9 J ND ug/L 04/13/09 0.6 -- 10 -- 1.8 J 0.7 J 0.8 J 0.6 J ND ug/L 10/20/09 1.1 -- 10 3.43 J ND ND ND ND ND ug/L 04/30/10 1.1 -- 10 -- ND ND ND 1.98 J ND ug/L 10/11/10 1.1 -- 10 -- ND ND ND ND ND ug/L 05/12/11 1.1 -- 10 3.19 J ND ND ND ND ND ug/L 10/07/11 1.1 -- 10 4.06 J 6.5 J 1.19 J 2.28 J ND ND ug/L 04/19/12 1.1 -- 10 ND ND ND ND ND ND ug/L 10/26/12 1.1 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.1 -- 10 ND 2.03 J ND ND ND ND ug/L 09/12/13 1.1 -- 10 ND ND 1.46 J 1.15 J ND ND ug/L 04/25/14 1.1 -- 10 4.31 J ND 1.91 J ND ND ND ug/L 10/02/14 1.1 -- 10 8.95 J ND 4.56 J 2.46 J 2.45 J ND ug/L 04/06/15 1.1 -- 10 1.73 J ND 2.44 J 1.56 J 2.18 J ND ug/L 10/07/15 1.1 -- 10 4.34 J ND 2.43 J 46.5 1.92 J ND ug/L 04/20/16 1.1 -- 10 7.38 J ND 4.32 J 1.66 J 2.1 J ND ug/L 09/26/16 1.1 -- 10 ND 1.30 J ND ND ND ND ug/L 04/28/17 1.1 -- 10 ND ND 2.31 J ND ND ND ug/L 10/17/17 1.1 -- 10 ND ND 2.94 J ND ND ND ug/L 04/16/18 1.1 -- 10 1.65 J 1.49 J ND 1.30 J 1.32 J ND ug/L 10/18/18 1.4 10 -- ND ND ND ND ND ND ug/L 04/12/19 1.4 10 -- ND 1.40 J ND ND ND ND ug/L 10/08/19 1.4 10 -- ND ND ND ND ND ND ug/L 04/20/20 1.4 10 -- ND ND ND ND ND ND ug/L 10/15/20 1.4 10 -- ND ND ND ND ND ND ug/L 04/29/21 1.4 10 -- ND ND ND ND ND ND ug/L 10/14/21 1.4 10 -- ND ND ND ND ND ND Copper ug/L 03/01/00 -- -- 200 ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 200 ND ND ND ND ND ND SW-1 = 15.46 ug/L 03/01/01 -- -- 200 ND ND ND ND ND ND SW-2 = 13.82 ug/L 09/01/01 -- -- 200 ND ND ND ND ND ND SW-3 = 12.04 ug/L 03/01/02 -- -- 200 ND ND ND ND ND ND SW-4 = 18.82 ug/L 09/01/02 -- -- 200 ND ND ND ND ND ND SW-5 = 15.71 ug/L 04/01/03 -- -- 200 ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 200 ND ND ND ND ND ND SW-1 = 10.17 ug/L 03/01/04 -- -- 200 ND ND ND ND ND ND SW-2 = 9.18 ug/L 09/01/04 -- -- 200 ND ND ND ND ND ND SW-3 = 8.11 ug/L 05/01/05 -- -- 200 ND ND ND ND ND ND SW-4 = 12.16 ug/L 10/01/05 -- -- 200 ND ND ND ND ND ND SW-5 = 10.32 ug/L 04/01/06 -- -- 200 ND ND ND ND ND ND ug/L 10/01/06 -- -- 200 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 2.20 J 1.50 J 6.20 J 4.50 J 4.30 J ND ug/L 09/25/07 -- -- -- 11.2 0.6 10.3 8.40 J 10.1 ND ug/L 05/05/08 0.6 -- 10 -- 1.3 J 2.50 J 13.3 3.7 J ND ug/L 12/04/08 1.6 -- 10 -- 20.5 4.60 J 4.30 J 6.40 J ND ug/L 04/13/09 0.81 -- 10 -- 1.93 J 2.56 J 1.87 J 1.78 J ND ug/L 10/20/09 1.6 -- 10 10.7 ND 7.1 J 5.15 J 5.26 J ND ug/L 04/30/10 1.6 -- 10 -- ND 5.90 J 3.30 J 6.33 J ND ug/L 10/11/10 1.6 -- 10 -- 10.2 8.12 J 5.59 J 3.91 J ND ug/L 05/12/11 1.6 -- 10 12.6 ND 3.34 J 2.89 J 3.03 J ND ug/L 10/07/11 1.6 -- 10 8.31 J 5.88 J 4.91 J 6.56 J 3.28 J ND ug/L 04/19/12 1.6 -- 10 2.72 J ND 5.01 J 4.36 J 4.11 J ND ug/L 10/26/12 1.6 -- 10 2.04 J ND 5.47 J 2.22 J 2.71 J ND ug/L 04/25/13 1.6 -- 10 3.43 J 5.01 J 4.46 J 4.33 J 6.16 J ND ug/L 09/12/13 1.6 -- 10 1.94 J ND 1.67 J ND ND ND ug/L 04/25/14 1.6 -- 10 16.7 B 3.46 B 10.5 B 5.92 B 6.29 B -- ug/L 10/02/14 1.6 -- 10 30.9 1.82 J 6.82 J 5.42 J 5.30 J ND ug/L 04/06/15 1.6 -- 10 4.30 J 3.71 J 11.1 5.23 J 8.24 J ND ug/L 10/07/15 1.6 -- 10 11.3 1.6 2.65 J 57.1 2.17 J ND ug/L 04/20/16 1.6 -- 10 21.2 ND 10.8 2.56 J 4.07 J ND ug/L 09/26/16 1.6 -- 10 4.52 J 2.57 J 6.61 J 6.03 J 8.07 J ND ug/L 04/28/17 1.6 -- 10 5.19 J 3.02 J 13.4 4.55 J 4.51 J ND ug/L 10/17/17 1.6 -- 10 3.95 J 1.77 J 9.07 J 2.58 J 2.89 J ND ug/L 04/16/18 1.6 -- 10 4.40 J 4.19 J 4.11 J 5.33 J 3.98 J ND ug/L 10/18/18 1.6 10 -- 3.11 J 3.84 J 2.72 J 2.42 J 3.55 J ND ug/L 04/12/19 1.6 10 -- 3.44 J 5.44 J 5.11 J 3.66 J 4.18 J ND ug/L 10/08/19 1.6 10 -- 2.23 J 1.81 J 2.92 J 2.66 J 1.60 J ND ug/L 04/20/20 1.6 10 -- 4.72 J ND 4.85 J 6.44 J 4.63 J ND ug/L 10/15/20 1.6 10 -- 4.38 J 4.03 J 4.33 J 4.59 J 4.21 J ND ug/L 04/29/21 1.6 10 -- ND ND ND ND ND ND u /L 10/14/21 1.6 10 -- 1.68 B ND ND 1.82 B ND 2.62 J GOLDER MEMBER OF WSP 4 of 12 March 2022 TABLE 6 19131339.104 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Lead ug/L 03/01/00 -- -- 10 ND ND 15 ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 10 ND ND 10 ND ND ND SW-1 = 75.88 ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-2 = 66.69 ug/L 09/01/01 -- -- 10 25 ND ND ND ND ND SW-3 = 56.87 ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND SW-4 = 95.12 ug/L 09/01/02 -- -- 10 ND 86 ND ND ND ND SW-5 = 77.30 ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND SW-1 = 2.96 ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND SW-2 = 2.60 ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND SW-3 = 2.22 ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND SW-4 = 3.71 ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND SW-5 = 3.01 ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 11.2 ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND 14.8 ND ND ug/L 12/04/08 1.9 -- 10 -- ND ND ND ND ND ug/L 04/13/09 1.6 -- 10 -- 2.30 1 2.50 1 1.60 1.60 ND ug/L 10/20/09 1.9 -- 10 8.94 J ND ND 2.44 1 3.34 J ND ug/L 04/30/10 1.9 -- 10 -- ND ND ND 2.04 1 ND ug/L 10/11/10 1.9 -- 10 -- 5.45 1 1.90 1.90 1.90 ND ug/L 05/12/11 1.9 -- 10 15.4 ND 2.00 1 ND ND ND ug/L 10/07/11 1.9 -- 10 10.0 16.4 ND 3.33 1 ND ND ug/L 04/19/12 1.9 -- 10 ND ND 2.38 J ND ND ND ug/L 10/26/12 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.9 -- 10 ND 4.74 J ND ND ND ND ug/L 09/12/13 2.1 -- 10 ND ND ND ND ND ND ug/L 04/25/14 2.1 -- 10 11.2 3.23 1 3.36 1 2.23 1 2.82 1 ND ug/L 10/02/14 2.1 -- 10 ND ND ND ND ND ND ug/L 04/06/15 3.1 -- 10 ND ND ND ND ND ND ug/L 10/07/15 3.1 -- 10 7.02 J ND ND 93.2 ND ND ug/L 04/20/16 3.1 -- 10 14.6 ND 6.10 J ND ND ND ug/L 09/26/16 3.1 -- 10 ND ND ND ND ND ND ug/L 04/28/17 3.1 -- 10 ND ND 4.66 J ND ND ND ug/L 10/17/17 3.1 -- 10 ND ND 3.18 J ND ND ND ug/L 04/16/18 3.1 -- 10 ND ND ND ND ND ND ug/L 10/18/18 3.1 10 -- ND ND ND ND ND ND ug/L 04/12/19 3.1 10 -- 3.91 J ND ND ND ND ND ug/L 10/08/19 3.1 10 -- ND ND ND ND ND ND ug/L 04/20/20 3.1 10 -- ND ND ND ND ND ND ug/L 10/15/20 3.1 10 -- ND ND ND ND ND ND ug/L 04/29/21 3.1 10 -- ND ND ND ND ND ND ug/L 10/14/21 3.1 10 -- ND ND ND ND ND ND Nickel ug/L 03/01/00 -- -- 50 ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 50 ND ND 82 65 81 ND SW-1 = 530.88 ug/L 03/01/01 -- -- 50 ND ND ND ND ND ND SW-2 = 480.09 ug/L 09/01/01 -- -- 50 ND ND ND ND ND ND SW-3 = 424.28 ug/L 03/01/02 -- -- 50 ND ND ND ND ND ND SW-4 = 633.69 ug/L 09/01/02 -- -- 50 ND ND ND ND ND ND SW-5 = 538.61 ug/L 04/01/03 -- -- 50 ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 50 ND ND ND ND ND ND SW-1 = 58.96 ug/L 03/01/04 -- -- 50 ND ND ND ND ND ND SW-2 = 53.32 ug/L 09/01/04 -- -- 50 ND ND ND ND ND ND SW-3 = 47.12 ug/L 05/01/05 -- -- 50 ND ND ND ND ND ND SW-4 = 70.38 ug/L 10/01/05 -- -- 50 ND ND ND ND ND ND SW-5 = 59.82 ug/L 04/01/06 -- -- 50 ND ND ND ND ND ND ug/L 10/01/06 -- -- 50 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 2.7 1 ND 2.5 1 ND ug/L 09/25/07 -- -- -- ND ND 7.6 1 ND ND ND ug/L 05/05/08 2.0 -- 50 -- 3.5 1 3.9 1 5.5 1 6.7 1 ND ug/L 12/04/08 1.8 -- 50 -- ND 4.3 1 3.8 1 3.2 1 ND ug/L 04/13/09 0.6 -- 50 -- 2.3 1 1.5 1 1.6 1 1.5 1 ND ug/L 10/20/09 1.8 -- 50 2.94 1 ND 2.53 1 1.89 1 ND ND ug/L 04/30/10 1.8 -- 50 -- ND ND ND 2.14 1 ND ug/L 10/11/10 1.8 -- 50 -- 1.80 2.22 1 1.80 1.80 ND ug/L 05/12/11 1.8 -- 50 2.34 1 ND ND 2.57 1 2.66 1 ND ug/L 10/07/11 1.8 -- 50 3.64 1 4.23 1 6.40 1 4.31 1 3.43 1 ND ug/L 04/19/12 1.8 -- 50 ND ND 2.56 1 2.00 1 2.23 1 ND ug/L 10/26/12 1.8 -- 50 ND 1.92 1 5.32 1 5.14 1 5.46 1 ND ug/L 04/25/13 1.8 -- 50 2.38 1 3.30 1 6.20 1 6.96 1 6.85 1 ND ug/L 09/12/13 1.8 -- 50 ND ND 2.09 1 ND ND ND ug/L 04/25/14 1.8 -- 50 4.30 1 2.07 1 7.49 1 5.52 1 5.55 1 ND ug/L 10/02/14 1.8 -- 50 7.25 1 ND 23.7 1 9.96 1 10.6 1 ND ug/L 04/06/15 1.8 -- 50 2.02 1 ND 3.03 1 2.33 1 2.46 1 ND ug/L 10/07/15 1.8 -- 50 3.16 1 ND 6.56 1 22.0 1 3.14 1 ND ug/L 04/20/16 2.2 -- 50 5.60 1 ND 5.02 1 8.54 1 2.88 1 ND ug/L 09/26/16 2.2 -- 50 ND ND 3.54 1 3.34 1 6.44 1 ND ug/L 04/28/17 2.2 -- 50 ND ND 6.02 1 2.83 1 2.62 1 ND ug/L 10/17/17 2.2 -- 50 ND ND ND ND ND ND ug/L 04/16/18 2.2 -- 50 ND ND ND ND ND ND ug/L 10/18/18 2.2 10 -- ND ND ND ND ND ND ug/L 04/12/19 2.2 10 -- ND ND ND ND ND ND ug/L 10/08/19 2.2 10 -- ND ND ND ND 2.40 1 ND ug/L 04/20/20 2.2 10 -- 36.8 ND 3.71 1 ND ND ND ug/L 10/15/20 2.2 10 -- ND ND 3.50 1 ND ND ND ug/L 04/29/21 2.2 10 -- ND ND ND ND ND ND u /L 10/14/21 2.2 10 -- ND ND ND ND ND ND GOLDER MEMBER OF WSP 5 of 12 March 2022 TABLE 6 19131339.104 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Selenium ug/L 03/01/00 -- -- 20 ND ND ND ND ND ND SW Standards ug/L 09/01/00 -- -- 20 ND ND ND ND ND ND Acute = 5 ug/L ug/L 03/01/01 -- -- 20 ND ND ND ND ND ND Chronic = 5 ug/L ug/L 09/01/01 -- -- 20 ND ND ND ND ND ND ug/L 03/01/02 -- -- 20 ND ND ND ND ND ND ug/L 09/01/02 -- -- 20 ND ND ND ND ND ND ug/L 04/01/03 -- -- 20 ND ND ND ND ND ND ug/L 10/01/03 -- -- 20 ND ND ND ND ND ND ug/L 03/01/04 -- -- 20 ND ND ND ND ND ND ug/L 09/01/04 -- -- 20 ND ND ND ND ND ND ug/L 05/01/05 -- -- 20 ND ND ND ND ND ND ug/L 10/01/05 -- -- 20 ND ND ND ND ND ND ug/L 04/01/06 -- -- 20 ND ND ND ND ND ND ug/L 10/01/06 -- -- 20 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND 2.9 1 ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND ND ND ND ug/L 12/04/08 2.7 -- 10 -- ND ND ND ND ND ug/L 04/13/09 3.4 -- 10 -- ND ND ND ND ND ug/L 10/20/09 2.7 -- 10 ND ND ND ND ND ND ug/L 04/30/10 0.83 -- 10 -- 1.72 1 0.9 1 0.974 1 1.23 1 ND ug/L 10/11/10 0.83 -- 10 -- 0.83 0.83 0.83 0.875 1 ND ug/L 05/12/11 0.83 -- 10 ND ND ND 1.16 1 0.926 1 ND ug/L 10/07/11 4.15 -- 10 ND ND ND 1.03 1 1.16 1 ND ug/L 04/19/12 0.83 -- 10 ND ND ND ND ND ND ug/L 10/26/12 0.83 -- 10 ND ND ND ND ND ND ug/L 04/25/13 0.83 -- 10 ND ND ND ND ND ND ug/L 09/12/13 0.91 -- 10 ND ND ND ND ND ND ug/L 04/25/14 0.91 -- 10 ND ND ND ND ND ND ug/L 10/02/14 0.91 -- 10 ND ND ND ND ND ND ug/L 04/06/15 0.91 -- 10 ND ND ND ND ND ND ug/L 10/07/15 0.91 -- 10 ND ND ND ND ND ND ug/L 04/20/16 0.91 -- 10 ND ND ND ND ND ND ug/L 09/26/16 0.91 -- 10 ND ND ND ND ND ND ug/L 04/28/17 6.2 -- 10 ND ND ND ND ND ND ug/L 10/17/17 6.2 -- 10 ND ND ND ND ND ND ug/L 04/16/18 6.2 -- 10 ND ND ND ND ND ND ug/L 10/18/18 6.2 10 -- ND ND ND ND ND ND ug/L 04/12/19 6.2 10 -- ND ND ND ND ND ND ug/L 10/08/19 6.2 10 -- ND ND ND ND ND ND ug/L 04/20/20 6.2 10 -- ND ND ND ND ND ND ug/L 10/15/20 6.2 10 -- ND ND ND ND ND ND ug/L 04/29/21 6.2 10 -- ND ND ND ND ND ND ug/L 10/14/21 6.2 10 -- ND ND ND ND ND ND Silver ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND SW-1 = 4.15 ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-2 = 3.38 ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND SW-3 = 2.63 ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND SW-4 = 5.95 ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND SW-5 = 4.28 ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND SW-1 = 0.06 ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND SW-2 = 0.06 ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND SW-3 = 0.06 ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND SW-4 = 0.06 ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND SW-5 = 0.06 ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND 2.20 J ND 2.40 J ND ug/L 12/04/08 1.9 -- 10 -- ND ND ND 2.80 J ND ug/L 04/13/09 1.0 -- 10 -- ND ND ND ND ND ug/L 10/20/09 1.9 -- 10 ND ND ND ND ND ND ug/L 04/30/10 1.9 -- 10 -- 2.22 J ND ND ND ND ug/L 10/11/10 1.9 -- 10 -- ND ND ND ND ND ug/L 05/12/11 1.9 -- 10 ND ND ND ND ND ND ug/L 10/07/11 1.9 -- 10 ND ND ND ND ND ND ug/L 04/19/12 1.9 -- 10 ND ND ND ND ND ND ug/L 10/26/12 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.9 -- 10 2.06 J ND 1.95 J 2.29 1 2.31 J ND ug/L 09/12/13 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/14 1.9 -- 10 ND ND ND ND ND ND ug/L 10/02/14 1.9 -- 10 ND ND ND ND ND ND ug/L 04/06/15 1.9 -- 10 ND ND ND ND ND ND ug/L 10/07/15 1.9 -- 10 ND ND 2.74 J ND 2.32 J ND ug/L 04/20/16 1.9 -- 10 ND ND ND ND ND ND ug/L 09/26/16 1.9 -- 10 ND ND ND ND ND ND ug/L 04/28/17 1.9 -- 10 ND ND ND ND ND ND ug/L 10/17/17 1.9 -- 10 ND ND ND ND ND ND ug/L 04/16/18 1.9 -- 10 ND ND ND ND ND ND ug/L 10/18/18 1.9 10 -- ND ND ND ND ND ND ug/L 04/12/19 1.9 10 -- ND ND ND ND ND ND ug/L 10/08/19 1.9 10 -- ND ND ND ND ND ND ug/L 04/20/20 1.9 10 -- ND ND ND ND ND ND ug/L 10/15/20 1.9 10 -- ND ND ND ND ND ND ug/L 04/29/21 1.9 10 -- ND ND ND ND ND ND u /L 10/14/21 1.9 10 -- ND ND ND ND ND ND GOLDER MEMBER OF WSP 6 of 12 March 2022 TABLE 6 19131339.104 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Thallium ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND 12 ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 0.053 1 0.05 1 0.045 1 0.055 1 0.054 1 ND ug/L 05/05/08 0.036 -- 5.5 -- ND ND ND ND ND ug/L 12/04/08 0.036 -- 5.5 -- ND ND ND ND ND ug/L 04/13/09 0.036 -- 5.5 -- ND ND ND ND ND ug/L 10/20/09 0.11 -- 5.5 0.11 0.11 0.11 0.11 0.11 ND ug/L 04/30/10 0.11 -- 5.5 -- ND ND ND ND ND ug/L 10/11/10 0.11 -- 5.5 -- ND ND ND ND ND ug/L 05/12/11 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/07/11 0.55 -- 5.5 ND ND ND ND ND ND ug/L 04/19/12 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/26/12 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/25/13 0.11 -- 5.5 ND ND ND ND ND ND ug/L 09/12/13 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/25/14 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/02/14 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/06/15 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/07/15 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/20/16 0.11 -- 5.5 ND ND ND ND ND ND ug/L 09/26/16 0.11 -- 5.5 0.190 1 0.124 1 0.205 1 0.187 1 0.316 1 ND ug/L 04/28/17 0.11 -- 5.5 0.389 1 0.267 1 0.261 1 0.287 1 0.205 1 ND ug/L 10/17/17 0.11 -- 5.5 0.819 1 0.655 1 0.698 1 0.840 1 0.425 1 ND ug/L 04/16/18 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/18/18 0.55 5.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.22 2.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.22 2.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.22 2.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.22 2.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.22 2.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.22 2.0 -- ND ND ND ND ND ND Vanadium ug/L 03/01/00 -- -- 40 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 40 ND ND ND ND ND ND ug/L 03/01/01 -- -- 40 ND ND ND ND ND ND ug/L 09/01/01 -- -- 40 ND ND ND ND ND ND ug/L 03/01/02 -- -- 40 ND ND ND ND ND ND ug/L 09/01/02 -- -- 40 ND 44 ND ND ND ND ug/L 04/01/03 -- -- 40 ND ND ND ND ND ND ug/L 10/01/03 -- -- 40 ND ND ND ND ND ND ug/L 03/01/04 -- -- 40 ND ND ND ND ND ND ug/L 09/01/04 -- -- 40 ND ND ND ND ND ND ug/L 05/01/05 -- -- 40 ND ND ND ND ND ND ug/L 10/01/05 -- -- 40 ND ND ND ND ND ND ug/L 04/01/06 -- -- 40 ND ND ND ND ND ND ug/L 10/01/06 -- -- 40 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 7.1 1 ND ND 1.5 1 1.2 1 ND ug/L 05/05/08 1 -- 25 -- ND ND 9.3 1 2.4 1 ND ug/L 12/04/08 1.4 -- 25 -- ND ND ND 2.5 1 ND ug/L 04/13/09 0.7 -- 25 -- 4.2 1 2.1 1 2.5 1 2.6 1 ND ug/L 10/20/09 1.4 -- 25 10.7 1 2.19 1 1.81 1 2.79 1 1.86 1 ND ug/L 04/30/10 1.4 -- 25 -- ND ND ND 3.45 1 ND ug/L 10/11/10 1.4 -- 25 -- 8.27 1 3.03 1 2.55 1 2.02 1 ND ug/L 05/12/11 1.4 -- 25 8.52 1 1.90 1 2.35 1 2.27 1 2.42 1 ND ug/L 10/07/11 1.4 -- 25 11.9 1 21.0 1 2.27 1 6.55 1 1.66 1 ND ug/L 04/19/12 1.4 -- 25 2.33 1 ND 1.48 1 1.60 1 1.44 1 ND ug/L 10/26/12 1.4 -- 25 ND ND ND ND ND ND ug/L 04/25/13 1.4 -- 25 2.31 1 5.99 1 ND ND ND ND ug/L 09/12/13 1.4 -- 25 2.11 1 ND 1.70 1 1.53 1 ND ND ug/L 04/25/14 1.4 -- 25 17.9 1 ND 4.7 1 2.25 1 1.60 1 ND ug/L 10/02/14 1.4 -- 25 42.2 ND 3.14 1 2.66 1 2.26 1 ND ug/L 04/06/15 1.4 -- 25 2.34 1 ND 3.33 1 ND 4.62 1 ND ug/L 10/07/15 1.4 -- 25 18.2 1 2.91 1 3.69 1 61.8 3.05 1 ND ug/L 04/20/16 1.4 -- 25 26.9 ND 12.0 1 2.13 1 3.04 1 ND ug/L 09/26/16 1.4 -- 25 1.95 1 ND ND 1.64 1 4.58 1 ND ug/L 04/28/17 1.4 -- 25 2.61 1 1.66 1 8.36 1 2.35 1 2.36 1 ND ug/L 10/17/17 1.4 -- 25 2.42 1 ND 7.92 1 3.42 1 2.88 1 ND ug/L 04/16/18 1.4 -- 25 2.33 1 2.14 1 2.45 1 2.94 1 3.67 1 ND ug/L 10/18/18 1.4 10 -- 1.88 1 2.26 1 1.51 1 1.61 1 1.70 1 ND ug/L 04/12/19 1.4 10 -- 1.54 1 4.16 1 2.39 1 1.78 1 2.09 1 ND ug/L 10/08/19 1.4 10 -- 2.45 1 ND 2.33 1 1.96 1 1.78 1 ND ug/L 04/20/20 1.4 10 -- 1.75 1 ND 2.28 1 2.49 1 1.85 1 ND ug/L 10/15/20 1.4 10 -- ND ND ND ND ND ND ug/L 04/29/21 1.4 10 -- ND ND ND ND ND ND u /L 10/14/21 1.4 10 -- ND ND ND ND ND ND GOLDER MEMBER OF WSP 7 of 12 March 2022 TABLE 6 19131339.104 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Downstream Surface Water Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Zinc ug/L 03/01/00 -- -- 50 ND ND 31 58 68 ND SW Standard, Acute (ug/L) ug/L 09/01/00 -- -- 50 ND ND 130 50 60 ND SW-1 = 132.88 ug/L 03/01/01 -- -- 50 ND ND 68 ND 56 ND SW-2 = 120.15 ug/L 09/01/01 -- -- 50 120 ND 60 ND 50 ND SW-3 = 106.16 ug/L 03/01/02 -- -- 50 ND ND 70 50 60 ND SW-4 = 158.66 ug/L 09/01/02 -- -- 50 ND 180 80 ND ND ND SW-5 = 134.82 ug/L 04/01/03 -- -- 50 ND ND ND ND 50 ND SW Standard, Chronic (ug/L) ug/L 10/01/03 -- -- 50 ND ND 120 50 50 ND SW-1 = 133.97 ug/L 03/01/04 -- -- 50 ND ND 52 ND ND ND SW-2 = 121.14 ug/L 09/01/04 -- -- 50 58 ND 56 ND 59 ND SW-3 = 107.03 ug/L 05/01/05 -- -- 50 ND ND ND ND ND ND SW-4 = 159.96 ug/L 10/01/05 -- -- 50 ND ND ND ND ND ND SW-5 = 135.92 ug/L 04/01/06 -- -- 50 ND ND 51.6 ND ND ND ug/L 10/01/06 -- -- 50 ND ND 60.9 ND ND ND ug/L 04/10/07 -- -- -- 7.6 1 23.5 48.4 38.2 39.5 ND ug/L 09/25/07 -- -- -- 84.9 11.4 60.4 36.4 45.7 ND ug/L 05/05/08 1.0 -- 10 -- 5.8 1 6.4 1 154 20.4 ND ug/L 12/04/08 3.8 -- 10 -- 22.4 47.9 35.3 34.6 ND ug/L 04/13/09 3.4 -- 10 -- 24.9 21.4 25.8 27.2 ND ug/L 10/20/09 3.8 -- 10 70.0 7.62 1 45.2 30.9 33.2 ND ug/L 04/30/10 3.8 -- 10 -- 6.64 1 48.1 34.0 54.2 ND ug/L 10/11/10 3.8 -- 10 -- 32.0 30.1 22.8 22.9 ND ug/L 05/12/11 3.8 -- 10 76.2 10.1 33.5 27.7 36.9 ND ug/L 10/07/11 3.8 -- 10 102 62.1 45.0 60.5 32.1 ND ug/L 04/19/12 3.8 -- 10 5.98 1 ND 32.0 21.6 22.9 ND ug/L 10/26/12 3.8 -- 10 12.3 5.81 1 25.3 20.3 22.0 ND ug/L 04/25/13 3.8 -- 10 15.0 25.8 42.6 31.6 33.1 ND ug/L 09/12/13 3.8 -- 10 9.73 1 ND 29.8 14.9 17.1 ND ug/L 04/25/14 3.8 -- 10 66.3 7.92 1 63.3 37.2 33.7 ND ug/L 10/02/14 3.8 -- 10 144 3.94 1 63.6 34.9 34.0 ND ug/L 04/06/15 3.8 -- 10 16.4 5.33 1 57.3 30.0 51.6 ND ug/L 10/07/15 3.8 -- 10 117 7.88 1 25.2 1020 24.5 ND ug/L 04/20/16 4.4 -- 10 111 ND 95.5 31.5 44.7 ND ug/L 09/26/16 4.4 -- 10 5.08 1 5.21 1 20 16.4 27.7 ND ug/L 04/28/17 4.4 -- 10 11.0 6.98 1 64.8 21.1 20.1 ND ug/L 10/17/17 4.4 -- 10 8.83 1 ND 32.5 5.72 1 ND ND ug/L 04/16/18 4.4 -- 10 11.4 10.6 10.3 16.3 15.7 ND ug/L 10/18/18 4.4 10 -- 12.9 12.2 11.8 17.5 18.4 ND ug/L 04/12/19 4.4 10 -- 11.6 16.2 13.9 12.1 15.6 ND ug/L 10/08/19 4.4 10 -- 7.17 1 ND 6.31 1 6.76 1 7.48 1 ND ug/L 04/20/20 4.4 10 -- 27.1 ND 13.6 13.3 10.1 ND ug/L 10/15/20 4.4 10 -- 6.40 1 ND 14.5 10.3 11.7 ND ug/L 04/29/21 4.4 10 -- 6.18 1 ND 4.48 1 5.98 1 6.52 1 ND ug/L 10/14/21 4.4 10 -- 4.54 1 ND 4.77 1 10.5 7.25 1 ND Acetone ug/L 03/01/00 -- -- 100 ND ND ND ND ND -- SW Standard = 2000 ug/L ug/L 09/01/00 -- -- 100 ND ND ND ND ND ND ug/L 03/01/01 -- -- 100 ND ND ND ND ND ND ug/L 09/01/01 -- -- 100 ND ND ND ND ND ND ug/L 03/01/02 -- -- 100 ND ND ND ND ND ND ug/L 09/01/02 -- -- 100 ND ND ND ND ND ND ug/L 04/01/03 -- -- 100 ND ND ND ND ND ND ug/L 10/01/03 -- -- 100 ND ND ND ND ND ND ug/L 03/01/04 -- -- 100 ND ND ND ND ND ND ug/L 09/01/04 -- -- 100 ND ND ND ND ND ND ug/L 05/01/05 -- -- 100 ND ND ND ND ND ND ug/L 10/01/05 -- -- 100 ND ND ND ND ND ND ug/L 04/01/06 -- -- 100 ND ND ND ND ND ND ug/L 10/01/06 -- -- 100 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND 5.3 1 68 1 1.7 1 6.3 1 ND ug/L 05/05/08 0.62 -- 100 -- ND ND ND ND ND ug/L 12/04/08 1.5 -- 100 -- 7.9 1 9.1 1 7.6 1 7.8 1 ND ug/L 04/13/09 1.5 -- 100 -- ND ND ND ND ND ug/L 10/20/09 1.5 -- 100 ND ND 6.0 1 ND 6.2 1 ND ug/L 04/30/10 1.5 -- 100 -- 3.0 1 3.5 1 4.6 1 4.1 1 ND ug/L 10/11/10 1.5 -- 100 -- ND ND ND ND ND ug/L 05/12/11 1.2 -- 100 9.7 1 7.5 1 ND ND ND ND ug/L 10/07/11 1.2 -- 100 ND ND ND ND ND ND ug/L 04/19/12 1.2 -- 100 ND ND ND ND ND ND ug/L 10/26/12 1.2 -- 100 ND 4.4 1 ND ND ND ND ug/L 04/25/13 0.96 -- 100 1.0 1 1.0 1 ND ND 1.6 1 ND ug/L 09/12/13 1.2 -- 100 ND ND ND ND ND ND ug/L 04/25/14 1.2 -- 100 ND ND ND ND ND ND ug/L 10/02/14 1.2 -- 100 ND ND ND ND ND ND ug/L 04/06/15 1.2 -- 100 ND ND ND ND ND ND ug/L 10/07/15 1.2 -- 100 ND ND ND ND ND ND ug/L 04/20/16 1.2 -- 100 ND ND ND ND ND ND ug/L 09/26/16 10 -- 100 ND 11 1 ND ND 11 1 ND ug/L 04/28/17 10 -- 100 23 B 19 B 19 B 36 B 16 B 33 1 ug/L 10/17/17 10 -- 100 ND ND ND ND ND ND ug/L 04/16/18 10 -- 100 ND ND ND ND ND ND ug/L 10/18/18 10 20 -- ND ND ND ND ND ND ug/L 04/12/19 10 20 -- ND ND ND ND ND ND ug/L 10/08/19 10 20 -- ND ND ND ND ND ND ug/L 04/20/20 10 20 -- ND ND ND ND ND ND ug/L 10/15/20 10 20 -- ND ND ND ND ND ND ug/L 04/29/21 10 20 -- ND ND ND ND ND ND u /L 10/14/21 10 20 -- ND ND ND ND ND 26 GOLDER MEMBER OF WSP 8 of 12 March 2022 TABLE 6 19131339.104 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Chloroform ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 0.16 0.16 2.5 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 -- 5 -- ND ND ND ND ND ug/L 12/04/08 0.2 -- 5 -- 0.2 0.58 1 0.2 0.2 ND ug/L 04/13/09 0.2 -- 5 -- ND ND ND ND ND ug/L 10/20/09 0.2 -- 5 ND ND 2.4 1 2.1 1 1.3 1 ND ug/L 04/30/10 0.083 -- 5 -- ND 1.8 1 ND ND ND ug/L 10/11/10 0.2 -- 5 -- 0.2 7.4 2.0 1 2.0 1 ND ug/L 05/12/11 0.7 -- 5 ND ND ND 1 ND ND ND ug/L 10/07/11 0.7 -- 5 ND ND 2.4 1 0.92 1 1.1 1 ND ug/L 04/19/12 0.18 -- 5 ND ND 1.0 1 0.45 1 ND ND ug/L 10/26/12 0.18 -- 5 ND ND 1.2 1 ND ND ND ug/L 04/25/13 0.25 -- 5 ND ND 0.51 1 ND ND ND ug/L 09/12/13 0.18 -- 5 ND ND 1.8 1 0.76 1 0.76 1 ND ug/L 04/25/14 0.18 -- 5 1.6 1 ND 1.7 1 0.46 1 0.58 1 ND ug/L 10/02/14 0.18 -- 5 1.2 1 ND 0.95 1 1.0 1 ND ND ug/L 04/06/15 0.18 -- 5 ND ND 0.49 1 ND ND ND ug/L 10/07/15 0.18 -- 5 ND ND 2.4 1 0.92 1 1.0 1 ND ug/L 04/20/16 0.18 -- 5 ND ND ND ND ND ND ug/L 09/26/16 0.18 -- 5 ND ND 1.6 1 ND ND ND ug/L 04/28/17 0.18 -- 5 ND ND ND ND ND ND ug/L 10/17/17 0.18 -- 5 ND ND ND ND ND ND ug/L 04/16/18 0.18 -- 5 ND ND ND ND ND ND ug/L 10/18/18 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.18 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.18 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.18 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.18 1.0 -- ND ND ND ND ND ND Dibromochloromethane ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND No SW Standard ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 0.54 1 ND ND ND ug/L 09/25/07 -- -- -- ND ND 2.8 1 ND ND ND ug/L 05/05/08 0.28 -- 3 -- ND ND ND ND ND ug/L 12/04/08 0.32 -- 3 -- ND ND ND ND ND ug/L 04/13/09 0.32 -- 3 -- ND ND ND ND ND ug/L 10/20/09 0.32 -- 3 ND ND ND ND ND ND ug/L 04/30/10 0.067 -- 3 -- ND ND ND ND ND ug/L 10/11/10 0.32 -- 3 -- 0.32 6.6 1.2 1 4.6 ND ug/L 05/12/11 0.63 -- 3 ND ND ND ND ND ND ug/L 10/07/11 0.63 -- 3 ND ND ND ND ND ND ug/L 04/19/12 0.17 -- 3 ND ND ND ND ND ND ug/L 10/26/12 0.17 -- 3 ND ND ND ND ND ND ug/L 04/25/13 0.49 -- 3 ND ND ND ND ND ND ug/L 09/12/13 0.17 -- 3 ND ND ND ND ND ND ug/L 04/25/14 0.17 -- 3 ND ND ND ND ND ND ug/L 10/02/14 0.17 -- 3 ND ND ND ND ND ND ug/L 04/06/15 0.17 -- 3 ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 3 ND ND ND ND ND ND ug/L 04/20/16 0.17 -- 3 ND ND ND ND ND ND ug/L 09/26/16 0.17 -- 3 ND ND ND ND ND ND ug/L 04/28/17 0.17 -- 3 ND ND ND ND ND ND ug/L 10/17/17 0.17 -- 3 ND ND ND ND ND ND ug/L 04/16/18 0.17 -- 3 ND ND ND ND ND ND ug/L 10/18/18 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.17 1.0 -- ND ND ND ND ND ND u /L 10/14/21 0.17 1.0 -- ND ND ND ND ND ND GOLDER MEMBER OF WSP 9 of 12 March 2022 TABLE 6 19131339.104 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 1,4-Dichlorobenzene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND SW Standard = 100 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.2 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.38 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.38 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.38 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.1 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.79 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.79 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.19 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.19 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.14 -- 1 ND ND 0.46 1 ND 0.19 1 ND ug/L 09/12/13 0.19 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.19 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.19 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.19 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.19 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.19 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.19 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.19 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.19 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.19 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.19 1.0 -- ND ND ND ND ND ND u /L 10/14/21 0.19 1.0 -- ND ND ND ND ND ND Chloromethane ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.23 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.34 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.34 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.34 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.05 -- 1 -- ND ND ND ND ND ug/L 10/11 /10 0.34 -- 1 -- 0.82 B 0.34 0.34 B 0.62 B 0.43 1 ug/L 05/12/11 0.55 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.55 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.13 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.13 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.44 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.13 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.13 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.13 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.13 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.13 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.13 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.13 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.13 -- 1 0.42 1 ND ND 0.78 1 0.41 1 ND ug/L 10/17/17 0.13 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.13 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.13 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.13 1.0 -- ND ND ND ND ND ND u /L 10/14/21 0.13 1.0 -- ND ND ND ND ND ND GOLDER MEMBER OF WSP 10 of 12 March 2022 TABLE 6 19131339.104 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Methylene Chloride ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.24 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.53 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.53 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.53 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.07 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.53 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.14 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.14 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.23 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.23 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.5 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.23 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.23 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.23 -- 1 ND ND ND ND 0.77 1 ND ug/L 04/06/15 0.23 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.23 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.23 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.23 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.23 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.23 1.0 -- ND ND ND ND ND 0.73 1 ug/L 10/08/19 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.23 1.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.23 1.0 -- ND ND ND ND ND ND Trichloroethene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND Human Health = 30 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.25 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.38 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.38 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.38 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.13 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.72 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.72 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.15 -- 1 ND ND 0.69 1 ND ND ND ug/L 10/26/12 0.15 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.23 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.15 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.15 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.15 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.15 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.15 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.15 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.15 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.15 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.15 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.15 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/15/20 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.15 1.0 -- ND ND ND ND ND ND u /L 10/14/21 0.15 1.0 -- ND ND ND ND ND ND GOLDER MEMBER OF WSP 11 of 12 March 2022 TABLE 6 19131339.104 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Method Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Detection Quanitation Reporting Monitoring Points Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Xylenes (Total) ug/L 09/25/07 -- -- ND ND ND ND ND ND ug/L 05/05/08 0.67 5 -- ND ND ND ND -- ug/L 12/04/08 0.4 5 -- ND ND ND ND -- ug/L 04/13/09 0.4 5 -- ND ND ND ND -- ug/L 10/20/09 0.4 5 ND ND ND ND ND ND ug/L 04/30/10 0.22 5 -- ND ND ND ND -- ug/L 10/11/10 0.4 5 -- ND ND ND ND ND ug/L 05/12/11 2.1 5 ND ND ND ND ND -- ug/L 10/07/11 2.1 5 ND ND ND ND ND -- ug/L 04/19/12 0.45 5 ND ND ND ND ND -- ug/L 10/26/12 0.45 5 ND ND ND ND ND -- ug/L 04/25/13 0.67 5 ND ND ND ND ND -- ug/L 09/12/13 0.45 5 ND ND ND ND ND -- ug/L 04/25/14 0.45 5 ND ND ND ND ND -- ug/L 10/02/14 0.45 5 ND ND ND ND ND -- ug/L 04/06/15 0.45 5 ND ND ND ND ND -- ug/L 10/07/15 0.45 5 ND ND ND ND ND -- ug/L 04/20/16 0.45 5 ND ND ND ND ND -- ug/L 09/26/16 0.45 5 ND ND ND ND ND -- ug/L 04/28/17 0.45 5 ND ND ND ND ND ND ug/L 10/17/17 0.45 5 ND ND ND ND ND ND ug/L 04/16/18 0.45 5 ND ND ND ND ND ND ug/L 10/18/18 0.45 3 ND ND ND ND ND ND ug/L 04/12/19 0.45 3.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.45 3.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.45 3.0 -- ND ND ND ND 1.5 J ND ug/L 10/15/20 0.45 3.0 -- ND ND ND ND ND ND ug/L 04/29/21 0.45 3.0 -- ND ND ND ND ND ND ug/L 10/14/21 0.45 3.0 -- ND ND ND ND ND ND 1,4-Dioxane ug/L 10/18/18 1.2 2.0 -- ND ND ND 2.1 1.5 J ND (SW Standard = 80 ug/L) ug/L 04/12/19 1.2 2.0 -- ND 1.6 J ND ND ND ND ug/L 10/08/19 1.2 2.0 -- ND 1.3 J ND 1.2 J ND ND ug/L 04/20/20 0.80 2.0 -- ND 1.6 J ND 0.89 J 0.91 J ND ug/L 10/15/20 0.80 2.0 -- ND 1.2 J ND ND 1.0 J ND ug/L 04/29/21 0.80 2.0 -- ND 1.7 J ND 1.0 J 0.87 J ND ug/L 10/14/21 0.80 2.0 -- ND 1.4 J ND 0.92 J 1.2 J ND Notes: B = blank -qualified data Shaded = concentrations above acute standards are shaded Bold = concentrations above chronic standards are bolded Data prior to April 2017 provided by S&ME Engineering # = EPA Action Level * = EPA Secondary MCL Blanks = field, trip and method blanks IMAC = Interim Maximum Allowable Concentration (under NC 2L Rules) EPA MCL = United States Environmental Protection Agency Maximum Contaminant Level MDL = laboratory method detection limit ug/L = micrograms per liter mg/L = milligrams per liter nM = nano mols SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on 01/18/07 -- = no data available or no limit established NC 2L = North Carolina Water Quality Standard ND = not detected above the laboratory detection limit or stated reporting limit J = are estimated values between MDL and PQL. The following dilutions were noted for the Otober 2021 event: antimony & selenium by 2x (_all points). present on laboratory electronic files. Hardness values collected last during the April 2021 event (mg/L): SW-1 = 116, SW-2 = 103, SW-3 = 89, SW-4 = 143, SW-5 = 118 GOLDER MEMBER OF WSP 12 of 12 March 2022 19131339.104 h IF_1--I I =WA Summary of Surface Water Field Parameters Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date SW-1 SW-2 SW-3 SW-4 SW-5 pH (Field) S. U. 03/25/99 7.27 7.26 7.30 -- S. U. 09/23/99 7.15 7.54 6.86 -- -- S. U. 03/27/00 8.06 8.15 7.89 8.19 8.02 S. U. 09/13/00 7.56 7.31 ND 7.25 7.06 S. U. 03/12/01 7.51 7.29 7.29 7.24 7.18 S. U. 09/13/01 7.51 7.51 7.22 7.24 7.18 S. U. 03/07/02 7.20 7.26 7.04 7.20 6.80 S. U. 09/18/02 7.43 7.33 -- 7.36 6.97 S. U. 04/15/03 7.87 7.60 7.61 7.50 7.62 S. U. 10/15/03 7.26 6.80 6.98 7.15 6.99 S. U. 03/24/04 9.50 8.80 8.99 8.63 8.63 S. U. 09/22/04 7.76 7.26 7.61 7.61 7.63 S. U. 05/ 10/05 9.56 9.41 9.36 9.45 9.28 S. U. 10/11/05 7.37 7.07 7.19 7.17 7.35 S. U. 04/24/06 7.11 6.99 6.86 7.20 7.38 S.U. 10/16/06 -- -- -- -- -- S. U. 04/10/07 6.24 6.64 6.55 7.02 7.16 S.U. 09/25/07 6.81 7.28 6.28 7.36 7.20 S.U. 05/02/08 -- -- -- -- -- S. U. 12/05/08 -- 7.82 7.56 7.85 7.98 S. U. 04/16/09 -- 8.01 8.13 7.89 7.89 S. U. 10/07/09 -- -- -- -- -- S. U. 04/28/10 -- -- -- -- -- S. U. 10/05/10 -- 8.05 7.65 8.05 7.81 S. U. 05/10/11 7.74 7.74 7.71 7.64 7.54 S. U. 10/06/11 7.21 7.26 6.90 7.22 7.70 S. U. 04/16/12 -- -- -- -- -- S. U. 10/24/12 -- -- -- -- -- S. U. 04/24/13 6.97 7.24 6.92 7.16 7.63 S. U. 09/09/13 7.68 8.30 7.59 7.76 7.69 S. U. 04/22/14 7.54 7.29 7.30 7.37 7.02 S. U. 10/01 /14 8.03 8.03 7.88 7.72 7.84 S. U. 04/07/15 8.13 7.77 7.59 7.84 7.79 S. U. 10/06/ 15 7.27 7.37 7.34 7.62 7.19 S. U. 04/ 18/ 16 7.57 7.68 7.56 7.29 7.39 S. U. 09/26/ 16 7.22 6.75 7.21 7.30 7.34 S. U. 04/25/ 17 7.41 7.40 7.14 7.28 7.22 S. U. 10/16/17 7.38 6.88 7.07 7.45 7.94 S. U. 04/16/18 7.48 7.38 7.42 7.67 7.38 S. U. 10/18/18 7.49 8.01 7.50 7.43 7.40 S. U. 04/08/19 7.07 6.50 7.69 7.28 7.50 S. U. 10/07/19 7.56 7.07 7.54 7.42 7.50 S. U. 04/20/20 8.00 7.40 7.72 7.88 7.57 S. U. 10/15/20 7.65 7.22 7.76 7.50 7.39 S. U. 04/29/21 7.57 7.46 7.44 7.46 7.44 S. U. 10/14/21 6.33 7.22 7.19 7.62 7.30 Specific Conductance (Field) US/cm 03/25/99 347 155 309 -- -- us/cm 09/23/99 811 123 487 -- -- us/cm 03/27/00 417 186 363 318 315 US/cm 09/13/00 303 233 ND 471 438 us/cm 03/12/01 6919 6145 6145 6393 5960 US/cm 09/13/01 6919 7324 6063 6393 5960 us/cm 03/07/02 420 377 577 561 555 US/cm 09/18/02 248 271 -- 449 469 us/cm 04/15/03 74 254 261 345 325 US/cm 10/15/03 215 256 357 334 340 US/cm 03/24/04 293 253 410 378 379 US/cm 09/22/04 242 223 234 424 1 US/cm 05/10/05 283 271 391 387 390 US/cm 10/11/05 167 215 319 264 269 US/cm 04/24/06 195 182 335 286 404 US/cm 10/16/06 -- -- -- -- -- US/cm 04/10/07 31.9 28.9 43.6 42.9 43.5 US/cm 09/25/07 31.0 13.0 57.0 53.0 54.0 US/cm 05/02/08 -- -- -- -- -- US/cm 12/05/08 -- 31.6 32.6 31.1 29.1 US/cm 04/16/09 -- 19.8 23.8 26.5 24.9 US/cm 10/07/09 -- -- -- -- -- US/cm 04/28/10 -- -- -- -- -- US/cm 10/05/10 -- 27.9 54 38.9 35.7 US/cm 05/10/11 256 209 345 412 405 US/cm 10/06/11 309 218 529 462 446 US/cm 04/16/12 -- -- -- -- -- US/cm 10/24/12 -- -- -- -- -- US/cm 04/24/13 237 242 381 362 380 US/cm 09/09/13 327 266 461 439 448 US/cm 04/22/14 337 275 430 375 420 US/cm 10/01 /14 276 228 454 444 441 US/cm 04/07/15 318 255 400 378 423 US/cm 10/06/15 229 151 337 299 284 US/cm 04/18/16 254 183 313 307 300 US/cm 09/26/16 293 214 439 412 427 US/cm 04/25/17 211 198 318 272 1272 US/cm 10/16/17 209 171 211 241 263 US/cm 04/16/18 233 215 234 217 227 US/cm 10/18/18 191 264 159 209 254 US/cm 04/08/19 129 210 158 270 248 US/cm 10/07/19 308 219 290 320 325 US/cm 04/20/20 189 212 194 192 197 US/cm 10/15/20 221 192 216 221 223 US/cm 04/29/21 251 208 228 259 252 US/cm 10/14/21 201 216 260 221 212 GOLDER MEMBER OF WSP 1 of 2 March 2022 19131339.104 Summary of Surface Water Field Parameters Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Date SW-1 SW-2 SW-3 SW-4 SW-5 Temperature (Field) °C 03/25/99 11.81 11.22 13.86 -- -- °C 09/23/99 18.45 17.18 21.83 -- -- °C 03/27/00 14.85 15.73 17.17 15.53 14.29 °C 09/13/00 25.27 23.45 -- 24.96 25.53 °C 03/12/01 14.86 16.71 16.71 15.51 16.52 °C 09/13/01 14.86 16.65 16.74 15.51 16.52 °C 03/07/02 12.12 13.02 16.45 14.40 13.20 °C 09/18/02 18.66 16.70 -- 19.05 18.96 °C 04/15/03 21.65 22.24 20.92 20.11 17.23 °C 10/15/03 17.39 18.39 20.06 18.45 20.33 °C 03/24/04 16.00 18.06 17.17 15.83 17.22 °C 09/22/04 22.67 21.95 25.28 24.17 22.95 °C 05/10/05 24.09 22.85 23.97 23.69 21.78 °C 10/11 /05 18.60 18.30 20.60 20.00 19.80 °C 04/24/06 18.30 16.26 18.47 19.05 22.24 °C 10/16/06 -- -- -- -- -- °C 04/10/07 10.55 8.05 12.20 14.82 13.49 °C 09/25/07 17.06 21.61 23.84 18.61 19.48 °C 05/02/08 -- -- -- -- -- °C 12/05/08 -- 7.00 11.30 9.50 8.80 °C 04/16/09 -- 12.20 14.30 14.50 13.20 °C 10/07/09 -- -- -- -- -- °C 04/28/10 -- -- -- -- -- °C 10/05/10 -- -- -- -- -- °C 05/10/11 19.10 17.50 19.30 19.40 19.50 °C 10/06/11 16.16 13.10 19.10 17.80 18.67 °C 04/16/12 -- -- -- -- -- °C 10/24/12 -- -- -- -- -- °C 04/24/13 16.35 14.24 17.40 16.28 16.20 °C 09/09/13 24.70 22.80 25.50 24.80 25.00 °C 04/22/14 15.70 12.90 16.80 17.70 15.30 °C 10/01 /14 19.33 19.21 21.28 19.92 22.08 °C 04/07/15 17.50 16.70 18.50 17.90 16.00 °C 10/06/15 18.76 17.11 21.82 20.90 19.20 °C 04/18/16 18.85 18.38 19.83 19.23 18.57 °C 09/26/16 21.60 20.60 23.80 22.50 22.60 °C 04/25/17 21.17 19.60 20.20 20.56 10.05 °C 10/16/17 15.42 15.62 11.55 16.71 16.86 °C 04/16/18 11.75 9.66 8.67 12.24 12.24 °C 10/18/18 14.7 14.9 14.9 13.2 19.8 °C 04/08/19 17.4 15.7 19.1 17.5 19.3 °C 10/07/19 20.0 18.6 19.7 19.8 21.1 °C 04/20/20 16.8 15.7 16.4 15.5 15.3 °C 10/15/20 18.5 17.2 18.1 16.6 15.8 °C 04/29/21 21.3 19.9 17.6 20.5 20.7 °C 10/14/21 20.4 18.7 7.9 19.2 19.8 Turbidity (Field) NTU 04/25/17 13.9 7.05 96.5 14.7 9.02 NTU 10/16/17 5.89 2.71 73.8 8.40 5.78 NTU 04/16/18 13.9 12.5 14.6 26.3 22.4 NTU 10/18/18 4.94 4.84 3.77 9.87 5.30 NTU 04/18/19 4.04 26.1 16.5 5.24 7.97 NTU 10/07/19 4.28 3.84 3.61 4.98 3.90 NTU 04/20/20 8.23 3.59 9.71 25.4 9.88 NTU 10/15/20 4.81 3.64 4.86 6.88 6.38 NTU 04/29/21 4.18 4.83 30.4 6.19 6.23 NTU 10/14/21 3.74 7.52 10.1 4.25 7.15 Oxidation Reduction Potential (field) my 04/25/17 69.8 50.6 72.3 79.4 77.3 my 10/16/17 81.7 60.9 174.0 81.3 10.7 my 04/16/18 119.5 95.2 202.0 190.5 115.8 my 10/18/18 115.1 61.7 97.2 143.1 7.9 my 04/08/19 124.5 143.2 5.3 101.8 332.5 my 10/07/19 137.1 17.2 179.6 159.5 170.9 my 04/20/20 179.1 7.7 117.5 144.2 77.8 my 10/15/20 198.9 -2.6 190.0 147.3 70.9 my 04/29/21 115.3 -32.8 236.6 154.1 141.1 my 10/14/21 301.3 -13.1 231.6 171.2 132.2 Dissolved Oxygen (field) mg/L 04/25/17 7.22 7.50 7.44 6.91 7.02 mg/L 10/16/17 8.33 8.08 8.37 8.01 6.90 mg/L 04/16/18 8.01 8.97 7.92 7.18 8.13 mg/L 10/18/18 5.95 10.74 6.99 7.06 5.81 mg/L 04/08/19 6.91 7.94 6.73 7.19 9.47 mg/L 10/07/19 5.32 4.89 5.90 5.03 6.19 mg/L 04/20/20 9.06 9.38 9.07 7.65 7.07 mg/L 10/15/20 7.37 8.20 7.47 8.05 7.72 mg/L 04/29/21 7.34 8.91 7.60 8.04 6.56 m /L 10/12/21 7.21 8.24 9.31 8.35 6.82 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 GOLDER r M EMBEft OF WSP 2 of 2 Figures LEGEND J SW-3 LOCATED -1600 FT. WEST lip � �S7 � �)' -4yVV r I . VVCJ I SW-2 LOCATED -500 FT. WEST 6808 /sue Uk �-76 0 682.8, �\ �7 11-7 682.73 a I (� 110 L 684.33 MSW LANDFILL l�LIMITS OF WASTE e� 695.13 OD � 715.51 f ~Q Av CLIENT CITY OF GREENSBORO molll SW-4 LOCATED -900 FT. EAST El O • 700— �-1 NM APPROXIMATE PROPERTY LINE. APPROXIMATE LIMITS OF WASTE EX. TOPOGRAPHIC CONTOURS (2 FT. INTERVALS) SURFACE WATER MONITORING POINT COMPLIANCE GROUNDWATER MONITORING WELL NES / SENTINEL GROUNDWATER MONITORING WELL NONCOMPLIANCE GROUNDWATER MONITORING WELL LEACHATE SAMPLING LOCATION GROUNDWATER SURFACE CONTOUR APPROXIMATE GROUNDWATER FLOW SEGMENT USED TO CALCULATE GRADIENT NOT MEASURED NOTES 1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET. 2. GROUNDWATER SURFACE CONTOUR INTERVAL = 10 FEET. 3. GROUNDWATER ELEVATIONS MEASURED ON OCTOBER 12, 2021. 4. GROUNDWATER CONTOURS ARE BASED ON LINEAR INTERPOLATION BETWEEN AND EXTRAPOLATION FROM KNOWN DATA, TOPOGRAPHIC CONTOURS, AND KNOWN FIELD CONDITIONS. THEREFORE, GROUNDWATER CONTOURS MAY NOT REFLECT ACTUAL GROUNDWATER CONDITIONS. 5. GROUNDWATER CONTOUR LINES SHOW THE WATER TABLE SHAPE AND ELEVATION THESE CONTOURS ARE INFERRED LINES FOLLOWING THE GROUNDWATER SURFACE AT A CONSTANT ELEVATION ABOVE SEA LEVEL. THE GROUNDWATER FLOW DIRECTION IS GENERALLY PERPENDICULAR TO THE GROUNDWATER SURFACE CONTOURS, SIMILAR TO THE RELATIONSHIP BETWEEN SURFACE WATER FLOW AND TOPOGRAPHIC CONTOURS. 6. ELEVATIONS SHOWN IN THIS DRAWING ARE IN FEET ABOVE MEAN SEA LEVEL DATUM ("MEAN SEA LEVEL DATUM" REFERS TO THE NATIONAL GEOTETIC VERTICAL DATUM (NGVD) OF 1929) AND COORDINATES ARE EXPRESSED IN TERMS OF THE STATE PLANE COORDINATE SYSTEM. 7. SURFACE WATER LOCATIONS ARE APPROXIMATE 8. TOPOGRAPHY PROVIDED BY BRADY SURVEYING CO. FROM AERIAL PHOTOGRAPHY DATED NOVEMBER 9, 1994. TOPOGRAPHY IN VICINITY OF PHASE II AND III LANDFILLS UPDATED BASED ON AERIAL SURVEY DATED JUNE 1, 2020, PROVIDED BY CARTOGRAPHIC AERIAL MAPPING, INC. 9. 7.5 MINUTE USGS QUADRANGLE, MCLEANSVILLE, NORTH CAROLINA, 2016. W ) .r.91. 1 �� .�i•. RDcyll o �Y1 O� BRIM RD BRA -ME RD KEELr RD �lalo Cr ootf. ! TEST II 75pcq�u I W GIRK$P0� W HUFFINE MILL RD a ^' Q: A Q o Q1JEE•N BE7 DR PL 3 SITE LOCATION MAP NOT TO SCALE 0 400 800 1" = 400' FEET PROJECT WHITE STREET LANDFILL CITY OF GREENSBORO GREENSBORO, NORTH CAROLINA CONSULTANT YYYY—MM—DD 2021-12-29 TITLE DESIGNED NTT GROUNDWATER SURFACE CONTOUR MAP G 0 L D E R PREPARED BPG / OCTOBER12,2021 MEMBER OF WSP REVIEWED DYR PROJECT NO. FIGURE APPROVED RPK 19-131339 0 0 LEGEND ❑ SW-1 SURFACE WATER MONITORING POINT GO L D E R DESIGNED SEP PREPARED SEP MEMBER OF WSP REVIEWED DYR _ GOLDER ASSOCIATES NC, INC. APPROVED RPK NOTES 1. SURFACE WATER LOCATIONS ARE APPROXIMATE. 2. 7.5 MINUTE USGS QUADRANGLE, MCLEANSVILLE, NORTH CAROLINA, 2016. SITE LOCATION MAP ° NOT TO SCALE o 0 0 1500 3000 1" = 1500' FEET PROJECT WHITE STREET LANDFILL CITY OF GREENSBORO GREENSBORO, NORTH CAROLINA TITLE SURFACE WATER LOCATION MAP PROJECT NO. FIGURE 166842117 0 2 APPENDIX A Groundwater and Surface Water Sampling Logs GaLaEP 440 McMerzR OF W5P Project Name: White Street Landfill Well ID: Y Well Diameter: inches Depth to Bottom: , o6 feet Purnping Rate: mLlmin. DATE: �L 3 2 1 �� GROUNDWATER SAMPLING LOG Project Number: _ 191 31339 Sampler(s): Darren Cox Initial Depth to Water: .95 feet Water Column Thickness: f= o feet System Volume: C7,) - mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 ORP(mill r Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at�it Signature: Date: j / 3 2-/ QAIQC Sign Off: Date., 1- 3 0. 7 7 �lop,_ GOLDER MEMBER of W9P Project Name: White Street Landfill Well ID: -- Well Diameter: ' inches Depth to Bottom: '144 Vo'feet Pumping Rate: mL/min. DATE: [ 0z f 31z{ GROUNDWATER SAMPLING LOG Project Number: 19131339 Sampler(s): Darren Cox Initial Depth to Water: H. , 3 feet Water Column Thickness: ! C1 } 3 7 feet System Volume: rl'? S mL Equipment: YSf, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 Sp. Cond. lit ORP _(millivolts) Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at 4 C Signature: Date- Io -, 1,3 21 QAIQC Sign Off: Date: cr 70, G4LDER MEMBER QF WSR Project Name: White Street Landfill Well ID: - 3 Well Diameter: rZ inches Depth to Bottom: Vi' ck! feet Pumping Rate: f ,SC) mLlmin DATE: I - 13 '- `t ( GROUNDWATER SAMPLING LOG Project Number: 19131339 5ampler(s): Darren Cox Initial Depth to Water: ,i (�' feet Water Column Thickness: c)S feet System Volume: j "7 i mL Equipment: Y51, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-95 — ® U Cond ® r +' , Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at Signature: Date: l o —J,3 - 24 QA/QC Sign Off: Date: - Z,_ kGOLDER MEMBER OF W8P DATE ) b -i � ' 2-1 GROUNDWATER SAMPLING LOG Project Name: White Street Landfill Project Number: 19131339 Well ID: 3; µ Sampler(s): _ T Martinez Well Diameter: 'I inches Initial Depth to Water: L- U feet Depth to Bottom: 15_6O feet Water Column Thickness: 11,6u feet Pumping Rate: ZOO mLlmin. System Volume: S•'Z 0 mL Equipment: YSI, Turbidity Meter, Water Level Meter, Dedicated Bladder Pump MP-15 Time pH (S.U.) Sp. Cond. (uSlcm) Turb (NTU) Dis 02 (mglL) Temp. VC) s (l jOR DTN (feet) 0V 1700 23, -7. - D 1005• 6. ,7o ,9 ►f U /S- o- 1, LI bl ..5 93 -7.9 0 ,7_ ) -W , V_r ik a 7,0 ' $Ll 1 Ls'z -Z-1 . 0.69 1o'Z07 V 16 1 v 4� G & -.o 1-1W p, Z -Z - D Q. Iv o b,sS_ I L-7ef iH.3 0. &( ) Y.Z — la-Z,� 434 T i IT q 0,-70 I Y.l —107 z L< t .6S' S } 1'� , T 51 j ti 12)1, 7 4.26 D`� 5 S 0,60 10t, I L1 / 9 S . 5 I Q11 9.7 `, 0.50 i90 4)1. M Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at 05 Signature: QAIQC Sign Off: Date: ) 0 _/ _Z 1 Date: ► - 74. , Z 1. GOLDER MEMBER OF WSP DATE: to _ I Y _'Z f SURFACE WATER SAMPLING LOG Project Name: White Street Landfll Project No./Phase No.: 19131339 Sample ID: �;V. Sampler(s): I- MAt+nc t Sampling Location: IV U 6,1 fib ja t mt E 4, S'/"M+ Equipment; YSI, Turbidimeter Time 1) pH SM. Sp. Cond.� US/cm j Tu rb. ntu Dis. Op�2 mg/L Temp. 0C ORPC mv Surface Water Sampling Location Sketch IV H Comments (sample methodology, weather conditions, color, silt, etc.): Signature: Date: QA/QC Sign Off: Date: / -_-y- I Z G4LDER 40> MEMBER OP WSP DATE: ] 0 --N - '2 I SURFACE WATER SAMPLING LOG Project Name: White Street Landfii Project No./Phase No 19131339 Sample ID: y2 Sampler(s): Cps _ Sampling location: Equipment: YSI, Turbidimeter Time q3U pH s.u. 5p. Cond. US/cm r Turb. ntu r r Dis. Dz mglL , Temp. °C rlt QRP mv Surface Water Sampling location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: Date: - f;-(-2 QAIQC Sign Off: - Date: t -p- 7-L GOLDEP MEMBER OF WSP Project Name: Sample ID: _ Sampling Location: Equipment: DATE: 11 /23/2021 SURFACE WATER SAMPLING LOG White Street LF Project No./Phase No.: SW-3 Sampler(s): Nicolas Tejeda-Torres r a hr,e cam, l ctJ YSI, Turbidimeter Time pH s.u. Sp. Cond. US/cm Turb. ntu 1C7 L Dis. 02 mg/L Temp. OC ORP my 1 �u Surface Water Sampling Location Sketch -- i -V 7 :3 x� f W4'tu w l Comments (sample methodology, weather conditions, color, silt, etc.): r Signature: Date: 11 /23/2D21 QA/QC Sign Off: SG Date: / -,F/- -?,Z GQLDER M EMQER OF W$P DATE: SURFACE WATER SAMPLING LOG Project Name: White Street Landfll Project No./Phase No.: Sample ID:Sampler(s): Sampling Location: 0IV -r ," /M,I I Equipment: YSI, Turbidimeter Time /S/Y S.U. -7. Sp. Cond. US/= Turb. ntu r f "[ Dis. 02 mg1L gs Temp. OC f f, DRP mw �! 19131339 Surface Water Sampling Location Sketch 016 1 Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QAlQC Sign Off: Date: "L Date: t-_?/-2-Z GOLDER MEMBER OF W5P DATE: 10 - 13 .-? � SURFACE WATER SAMPLING LOG Project Name: White Street Land#II Project No./Phase No.: 19131339 Sample ID: j,.r- Sampler(s): b Sampling Location: Equipment: YSI, Turbidimeter Time W�o pH S.U. 5p. Cond. US/cm Turb. ntu Dis. 02 m91L -9 Temp. l - GRP my + I' Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QA/QC Sign Off: Date: 10,13 - 7 Date: APPENDIX B October and November 2021 Groundwater Certificates -of - Analysis, Chain -of -Custody Forms and Laboratory Data Reviews ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Friday, October 29, 2021 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.104, Project Name/Desc: White Street LF-Phase I ENCO Workorder(s): CE15370 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, October 15, 2021. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Amanda L. Gaines Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of 22 PROJECT NARRATIVE Date: October 29, 2021 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase I Lab ID: CE15370 Overview (� �Eo www.encolabs.com Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in the QC Remarks section below. Quality Control Samples No Comments Quality Control Remarks No Comments Other Comments All samples received under this work order arrived in acceptable conditions. The samples were not checked for chlorine, as it is not required. The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Amanda Gaines Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of 22 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-I1 Lab ID: CE15370-01 Sampled: 10/13/21 09:00 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/11/22 10/18/21 07:51 10/20/21 10:54 EPA 7470A EPA 245.1 11/10/21 10/18/21 07:44 10/19/21 09:58 EPA 8260D EPA 503013_MS 10/27/21 10/25/21 19:47 10/26/21 09:30 Client ID: 4103-I1 Lab ID: CE15370-01RE1 Sampled: 10/13/21 09:00 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 10/27/21 10/20/21 00:00 10/20/21 17:30 Client ID: 4103-I2 Lab ID: CE15370-02 Sampled: 10/13/21 09:55 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/11/22 10/18/21 07:51 10/20/21 10:57 EPA 7470A EPA 245.1 11/10/21 10/18/21 07:44 10/19/21 10:14 EPA 8260D EPA 5030B_MIS 10/27/21 10/25/21 19:47 10/26/21 09:57 Client ID: 4103-I2 Lab ID: CE15370-02RE1 Sampled: 10/13/21 09:55 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 10/27/21 10/20/21 00:00 10/20/21 17:56 Client ID: 4103-I3 Lab ID: CE15370-03 Sampled: 10/13/21 11:20 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/11/22 10/18/21 07:51 10/20/21 10:59 EPA 7470A EPA 245.1 11/10/21 10/18/21 07:44 10/19/21 10:17 EPA 8260D EPA 503013_MS 10/27/21 10/25/21 19:47 10/26/21 10:25 Client ID: 4103-I3 Lab ID: CE15370-03RE1 Sampled: 10/13/21 11:20 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 10/27/21 10/20/21 00:00 10/20/21 18:22 Client ID: 4103-I4 Lab ID: CE15370-04 Sampled: 10/13/21 10:50 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/11/22 10/18/21 07:51 10/20/21 11:02 EPA 7470A EPA 245.1 11/10/21 10/18/21 07:44 10/19/21 10:18 EPA 8260D EPA 503013_MS 10/27/21 10/25/21 19:47 10/26/21 10:52 Client ID: 4103-I4 Lab ID: CE15370-04RE1 Sampled: 10/13/21 10:50 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 10/27/21 10/20/21 00:00 10/20/21 10:39 Client ID: 4303-Trip Blank I Lab ID: CE15370-05 Sampled: 10/13/21 09:00 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 10/27/21 10/19/21 00:00 10/19/21 16:55 EPA 8260D EPA 503013_MS 10/27/21 10/25/21 19:47 10/26/21 08:35 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 22 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4103-I1 Lab ID: CE15370-01 Analvte Results Flag MDL Q Units Method Notes 1,4-Dichlorobenzene 6.7 0.19 1.0 ug/L EPA 8260D Barium - Total 672 1.10 10.0 ug/L EPA 6010D Benzene 4.8 0.15 1.0 ug/L EPA 8260D Chlorobenzene 16 0.17 1.0 ug/L EPA 8260D Chromium - Total 3.72 J 1.40 10.0 ug/L EPA 6010D Client ID: 4103-I1 Lab ID: CE15370-01RE3 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 240 D 8.0 20 ug/L EPA 8260D Client ID: 4103-I2 Lab ID: CE15370-02 Analvte Results Flag MDL PQL Units Method Notes 1,2-Dichlorobenzene 1.5 0.19 1.0 ug/L EPA 8260D 1,4-Dichlorobenzene 1.8 0.19 1.0 ug/L EPA 8260D Barium - Total 530 1.10 10.0 ug/L EPA 6010D Chlorobenzene 7.5 0.17 1.0 ug/L EPA 8260D Chromium - Total 3.21 J 1.40 10.0 ug/L EPA 6010D Client ID: 4103-I2 Lab ID: CE15370-02RE3 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 200 D 8.0 20 ug/L EPA 8260D Client ID: 4103-I3 Lab ID: CE15370-03 Analvte Results Flag MDL PQL Units Method Notes 1,1-Dichloroethane 2.3 0.13 1.0 ug/L EPA 8260D 1,4-Dichlorobenzene 3.2 0.19 1.0 ug/L EPA 8260D Barium - Total 142 1.10 10.0 ug/L EPA 6010D Chlorobenzene 12 0.17 1.0 ug/L EPA 8260D Chromium - Total 5.46 J 1.40 10.0 ug/L EPA 6010D Client ID: 4303-I3 Lab ID: CE15370-03RE3 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 350 D 8.0 20 ug/L EPA 8260D Client ID: 4103-I4 Lab ID: CE15370-04 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 828 1.10 10.0 ug/L EPA 6010D Chlorobenzene 4.4 0.17 1.0 ug/L EPA 8260D Chromium - Total 2.88 1 1.40 10.0 ug/L EPA 6010D Client ID: 4103-I4 Lab ID: CE15370-04RE3 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 43 0.80 2.0 ug/L EPA 8260D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 22 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-I1 Lab Sample ID:CE15370-01 Received: 10/15/21 14:00 Matrix: Ground Water Sampled: 10/13/2109:00 Work Order: CE15370 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co> Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY 1,4-Dichlorobenzene [306-46-7]^ 6.7 ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 1125035 EPA 8260D 10/26/21 09:30 RKY 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 1125035 EPA 8260D 10/26/21 09:30 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 1125035 EPA 8260D 10/26/21 09:30 RKY Acetone [67-64-1]^ 10 u ug/L 1 10 20 1125035 EPA 8260D 10/26/21 09:30 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 1125035 EPA 8260D 10/26/21 09:30 RKY Benzene [71-43-2]A 4.8 ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Carbon disulfide [75-15-0]^ 1.5 u ug/L 1 1.5 5.0 1125035 EPA 8260D 10/26/21 09:30 RKY Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Chlorobenzene [108-90-7]A 16 ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Ethylbenzene [100-41-4]^ 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 1125035 EPA 8260D 10/26/21 09:30 RKY Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 1125035 EPA 8260D 10/26/21 09:30 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 1125035 EPA 8260D 10/26/21 09:30 RKY Xylenes (Total) [1330-20-7]^ 0.45 u ug/L 1 0.45 3.0 1125035 EPA 8260D 10/26/21 09:30 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-Il Lab Sample ID:CE15370-01 Received: 10/15/21 14:00 Matrix: Ground Water Sampled: 10/13/2109:00 Work Order: CE15370 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 62 1 50.0 123 % 53-136 IJ25035 EPA 8260D 10126121 09:30 RKY Dibromofluoromethane 56 1 50.0 ill % 67-129 IJ25035 EPA 8260D 10126121 09:30 RKY Toluene-d8 52 1 50.0 103 % 59-134 IJ25035 EPA 6260D 10126121 09:30 RKY Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed AX Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 1J18010 EPA 7470A 10/19/21 09:58 CPH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 1J18011 EPA 6010D 10/20/21 10:54 JDH Barium [7440-39-3]^ 672 ug/L 1 1.10 10.0 1118011 EPA 6010D 10/20/21 10:54 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 1J18011 EPA 6010D 10/20/21 10:54 JDH Chromium [7440-47-3]^ 3.72 J ug/L 1 1.40 10.0 1118011 EPA 6010D 10/20/21 10:54 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 1J18011 EPA 6010D 10/20/21 10:54 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 1J18011 EPA 6010D 10/20/21 10:54 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 1J18011 EPA 6010D 10/20/21 10:54 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO orlandO certified analyte [NC 424] Analyte rCAS Numberl 1,4-Dioxane [123-91-1]^ Surrogates Toluene-d8 Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 240 D ug/L 10 8.0 20 1120025 EPA 8260D 10/20/21 17:30 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffly Notes 5.3 1 5.00 106 % 75-125 IJ20025 EPA 8260D 10120121 1720 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:CE15370-02 Received: 10/15/21 14:00 Matrix: Ground Water Sampled: 10/13/2109:55 Work Order: CE15370 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co> Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 U ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY 1,1,1-Trichloroethane [71-55-6]^ 0.12 U ug/L 1 0.12 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 U ug/L 1 0.28 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY 1,1,2-Trichloroethane [79-00-5]^ 0.14 U ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY 1,2-Dichlorobenzene [95-50-1]^ 1.5 ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY 1,4-Dichlorobenzene [306-46-7]^ 1.8 ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY 2-Butanone [78-93-3]^ 1.3 U ug/L 1 1.3 5.0 1125035 EPA 8260D 10/26/21 09:57 RKY 2-Hexanone [591-78-6]^ 0.88 U ug/L 1 0.88 5.0 1125035 EPA 8260D 10/26/21 09:57 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 1125035 EPA 8260D 10/26/21 09:57 RKY Acetone [67-64-1]^ 10 U ug/L 1 10 20 1125035 EPA 8260D 10/26/21 09:57 RKY Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 1125035 EPA 8260D 10/26/21 09:57 RKY Benzene[71-43-2]^ 0.15 U ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Bromochloromethane [74-97-5]^ 0.48 U ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Carbon disulfide [75-15-0]^ 1.5 U ug/L 1 1.5 5.0 1125035 EPA 8260D 10/26/21 09:57 RKY Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Chlorobenzene [108-90-7]^ 7.5 ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Chloroethane [75-00-3]^ 0.23 U ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY cis-1,3-Dichloropropene [10061-01-5]^ 0.20 U ug/L 1 0.20 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Ethylbenzene [100-41-4]^ 0.13 U ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 1125035 EPA 8260D 10/26/21 09:57 RKY Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Styrene [100-42-5]^ 0.11 U ug/L 1 0.11 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Tetrachloroethene [127-18-4]^ 0.17 U ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 1125035 EPA 8260D 10/26/21 09:57 RKY Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 1125035 EPA 8260D 10/26/21 09:57 RKY Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 1125035 EPA 8260D 10/26/21 09:57 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 Of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-I2 Lab Sample ID:CE15370-02 Received: 10/15/21 14:00 Matrix: Ground Water Sampled: 10/13/2109:55 Work Order: CE15370 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 60 1 50.0 121 % 53-136 1J25035 EPA 8260D 10126121 09:57 RKY Dlbromofluoromethane 54 1 50.0 108 % 67-129 1J25035 EPA 8260D 10126121 09:57 RKY Toluene-d8 53 1 50.0 106 % 59-134 1J25035 EPA 6260D 10126121 09:57 RKY Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 1J18010 EPA 7470A 10/19/21 10:14 CPH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 1J18011 EPA 6010D 10/20/21 10:57 JDH Barium [7440-39-3]^ 530 ug/L 1 1.10 10.0 1118011 EPA 6010D 10/20/21 10:57 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 1J18011 EPA 6010D 10/20/21 10:57 JDH Chromium [7440-47-3]^ 3.21 J ug/L 1 1.40 10.0 1118011 EPA 6010D 10/20/21 10:57 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 1J18011 EPA 6010D 10/20/21 10:57 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 1J18011 EPA 6010D 10/20/21 10:57 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 1J18011 EPA 6010D 10/20/21 10:57 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO orlandO certified analyte [NC 424] Analyte rCAS Numberl 1,4-Dioxane [123-91-1]^ Surrogates Toluene-d8 Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 200 D ug/L 10 8.0 20 1120025 EPA 8260D 10/20/21 17:56 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffly Notes 5.4 1 5.00 107 % 75-125 IJ20025 EPA 8260D 10120121 17:56 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:CE15370-03 Received: 10/15/21 14:00 Matrix: Ground Water Sampled:10/13/21 11:20 Work Order: CE15370 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co> Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY 1,1-Dichloroethane [75-34-3]A 2.3 ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY 1,4-Dichlorobenzene [306-46-7]^ 3.2 ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 1125035 EPA 8260D 10/26/21 10:25 RKY 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 1125035 EPA 8260D 10/26/21 10:25 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 1125035 EPA 8260D 10/26/21 10:25 RKY Acetone [67-64-1]^ 10 u ug/L 1 10 20 1125035 EPA 8260D 10/26/21 10:25 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 1125035 EPA 8260D 10/26/21 10:25 RKY Benzene [71-43-2]^ 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Carbon disulfide [75-15-0]^ 1.5 u ug/L 1 1.5 5.0 1125035 EPA 8260D 10/26/21 10:25 RKY Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Chlorobenzene [108-90-7]A 12 ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Ethylbenzene [100-41-4]^ 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 1125035 EPA 8260D 10/26/21 10:25 RKY Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 1125035 EPA 8260D 10/26/21 10:25 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 1125035 EPA 8260D 10/26/21 10:25 RKY Xylenes(Total)[1330-20-7]^ 0.45 u ug/L 1 0.45 3.0 1125035 EPA 8260D 10/26/21 10:25 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-I3 Lab Sample ID:CE15370-03 Received: 10/15/21 14:00 Matrix: Ground Water Sampled:10/13/21 11:20 Work Order: CE15370 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 60 1 50.0 120 % 53-136 IJ25035 EPA 8260D 10126121 10:25 RKY Dlbromofluoromethane 53 1 50.0 105 % 67-129 IJ25035 EPA 8260D 10126121 10:25 RKY Toluene-d8 52 1 50.0 104 % 59-134 IJ25035 EPA 6260D 10126121 10:25 RKY Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed AX Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 1J18010 EPA 7470A 10/19/21 10:17 CPH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 1J18011 EPA 6010D 10/20/21 10:59 JDH Barium [7440-39-3]^ 142 ug/L 1 1.10 10.0 1118011 EPA 6010D 10/20/21 10:59 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 1J18011 EPA 6010D 10/20/21 10:59 JDH Chromium [7440-47-3]^ 5.46 J ug/L 1 1.40 10.0 1118011 EPA 6010D 10/20/21 10:59 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 1J18011 EPA 6010D 10/20/21 10:59 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 1J18011 EPA 6010D 10/20/21 10:59 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 1J18011 EPA 6010D 10/20/21 10:59 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 350 D ug/L 10 8.0 20 1120025 EPA 8260D 10/20/21 18:22 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffy Notes 5.4 1 5.00 108 % 75-125 IJ20025 EPA 8260D 10120121 18:22 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:CE15370-04 Received: 10/15/21 14:00 Matrix: Ground Water Sampled:10/13/21 10:50 Work Order: CE15370 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co> Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY 1,1-Dichloroethane [75-34-3]A 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY 1,1-Dichloroethene [75-35-4]A 0.21 u ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY 1,2,3-Trichloropropane [96-18-4]A 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 u ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY 1,2-Dibromoethane [106-93-4]A 0.66 u ug/L 1 0.66 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY 1,2-Dichlorobenzene [95-50-1]A 0.19 u ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY 1,2-Dichloroethane [107-06-2]A 0.21 u ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY 1,2-Dichloropropane [78-87-5]A 0.10 u ug/L 1 0.10 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY 1,4-Dichlorobenzene [106-46-7]A 0.19 u ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 1125035 EPA 8260D 10/26/21 10:52 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 1125035 EPA 8260D 10/26/21 10:52 RKY 4-Methyl-2-pentanone [108-10-1]A 1.1 u ug/L 1 1.1 5.0 1125035 EPA 8260D 10/26/21 10:52 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 1125035 EPA 8260D 10/26/21 10:52 RKY Acrylonitrile [107-13-1]A 3.5 u ug/L 1 3.5 10 1125035 EPA 8260D 10/26/21 10:52 RKY Benzene [71-43-2]A 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Bromodichloromethane [75-27-4]A 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Bromoform [75-25-2]A 0.22 u ug/L 1 0.22 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 1125035 EPA 8260D 10/26/21 10:52 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Chlorobenzene [108-90-7]A 4.4 ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Chloroform [67-66-3]A 0.18 u ug/L 1 0.18 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY cis-1,2-Dichloroethene [156-59-2]A 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Iodomethane [74-88-4]A 1.7 u ug/L 1 1.7 5.0 1125035 EPA 8260D 10/26/21 10:52 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Styrene [100-42-5]A 0.11 u ug/L 1 0.11 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Toluene [108-88-3]A 0.14 u ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY trans-1,2-Dichloroethene [156-60-5]A 0.21 u ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY trans-1,3-Dichloropropene [10061-02-6]A 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Trichloroethene [79-01-6]A 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Trichlorofluoromethane [75-69-4]A 0.24 u ug/L 1 0.24 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 1125035 EPA 8260D 10/26/21 10:52 RKY Vinyl chloride [75-01-4]A 0.32 u ug/L 1 0.32 1.0 1125035 EPA 8260D 10/26/21 10:52 RKY Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 1125035 EPA 8260D 10/26/21 10:52 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-I4 Lab Sample ID:CE15370-04 Received: 10/15/21 14:00 Matrix: Ground Water Sampled:10/13/21 10:50 Work Order: CE15370 Project: White Street LF-Phase I Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 58 1 50.0 116 % 53-136 1J25035 EPA 8260D 10126121 10:52 RKY Dlbromofluoromethane 60 1 50.0 121 % 67-129 1J25035 EPA 8260D 10126121 10:52 RKY Toluene-d8 52 1 50.0 104 % 59-134 1J25035 EPA 6260D 10126121 10:52 RKY Metals by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed AX Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 1J18010 EPA 7470A 10/19/21 10:18 CPH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 1J18011 EPA 6010D 10/20/21 11:02 JDH Barium [7440-39-3]^ 828 ug/L 1 1.10 10.0 1118011 EPA 6010D 10/20/21 11:02 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 1J18011 EPA 6010D 10/20/21 11:02 JDH Chromium [7440-47-3]^ 2.88 J ug/L 1 1.40 10.0 1118011 EPA 6010D 10/20/21 11:02 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 1J18011 EPA 6010D 10/20/21 11:02 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 1J18011 EPA 6010D 10/20/21 11:02 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 1J18011 EPA 6010D 10/20/21 11:02 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 43 ug/L 1 0.80 2.0 1120025 EPA 8260D 10/20/21 10:39 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffly Notes 5.2 1 5.00 104 % 75-125 IJ20025 EPA 8260D 10120121 1029 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:CE15370-05 Received: 10/15/21 14:00 Matrix: Water Sampled: 10/13/2109:00 Work Order: CE15370 Project: White Street LF-Phase I Sampled By: ENCO Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 1125035 EPA 8260D 10/26/21 08:35 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 1125035 EPA 8260D 10/26/21 08:35 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 1125035 EPA 8260D 10/26/21 08:35 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 1125035 EPA 8260D 10/26/21 08:35 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 1125035 EPA 8260D 10/26/21 08:35 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 1125035 EPA 8260D 10/26/21 08:35 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 1125035 EPA 8260D 10/26/21 08:35 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Styrene [100-42-5]A 0.11 Ll ug/L 1 0.11 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 1125035 EPA 8260D 10/26/21 08:35 RKY Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 1125035 EPA 8260D 10/26/21 08:35 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 1125035 EPA 8260D 10/26/21 08:35 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 13 Of 22 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-Trip Blank I Lab Sample ID:CE15370-05 Received: 10/15/21 14:00 Matrix: Water Sampled: 10/13/2109:00 Work Order: CE15370 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 58 1 50.0 117 % 53-136 1J25035 EPA 8260D 10126121 08:35 RKY Dibromofluoromethane 55 1 50.0 110 % 67-129 1J25035 EPA 8260D 10126121 08:35 RKY Toluene-d8 53 1 50.0 105 % 59-134 1J25035 EPA 6260D 10126121 08:35 RKY Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL POLL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 1J19030 EPA 8260D 10/19/21 16:55 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.4 1 5.00 107 % 75-125 IJ19030 EPA 8260D 10119121 16:55 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 IJ25035 - EPA 5030B MS Blank (1325035-BLK1) Prepared: 10/25/2021 19:47 Analyzed: 10/26/2021 08:07 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 60 u9/L 50.0 120 53-136 Dibromofluoromethane 56 u9/L 50.0 112 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 1125035 - EPA 5030B MS - Continued (� �Eo www.encolabs.com Blank (1325035-BLK1) Continued Prepared: 10/25/2021 19:47 Analyzed: 10/26/2021 08:07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 53 u91L 50.0 105 59-134 LCS (1325035-BS1) Prepared: 10/25/2021 19:47 Analyzed: 10/26/2021 06:17 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 20 1.0 ug/L 20.0 98 75-133 Benzene 16 1.0 ug/L 20.0 81 80-134 Chlorobenzene 18 1.0 ug/L 20.0 90 80-120 Toluene 22 1.0 ug/L 20.0 110 71-120 Trichloroethene 18 1.0 ug/L 20.0 88 74-120 Matrix Spike (1325035-MS1) Prepared: 10/25/2021 19:47 Analyzed: 10/26/2021 06:45 Source: CE16369-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 0.21 U 105 75-133 Benzene 18 1.0 ug/L 20.0 0.15 U 88 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 94 80-120 Toluene 22 1.0 ug/L 20.0 0.14 U 112 71-120 Trichloroethene 18 1.0 ug/L 20.0 0.15 U 89 74-120 Matrix Spike Dup (1325035-MSD1) Prepared: 10/25/2021 19:47 Analyzed: 10/26/2021 07:12 Source: CE16369-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 0.21 U 103 75-133 2 20 Benzene 17 1.0 ug/L 20.0 0.15 U 84 80-134 4 17 Chlorobenzene 18 1.0 ug/L 20.0 0.17 U 88 80-120 7 16 Toluene 22 1.0 ug/L 20.0 0.14 U 109 71-120 3 17 Trichloroethene 16 1.0 ug/L 20.0 0.15 U 82 74-120 9 22 Metals by EPA 6000/7000 Series Methods - Quality Control Batch 1118010 - EPA 245.1 Blank (1318010-BLK1) Prepared: 10/18/2021 07:44 Analyzed: 10/19/2021 09:57 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 (1318030-BS3) Prepared: 10/18/2021 07:44 Analyzed: 10/19/2021 10:00 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.91 0.200 ug/L 5.00 98 80-120 Matrix Spike (1318010-MS1) Prepared: 10/18/2021 07:44 Analyzed: 10/19/2021 10:02 Source: CE15370-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.75 0.200 ug/L 5.00 0.150 U 95 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 1118010 - EPA 245.1 - Continued Matrix Spike Dup (1318030-MSDI) Prepared: 10/18/2021 07:44 Analyzed: 10/19/2021 10:08 Source: CE15370-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.93 0.200 ug/L 5.00 0.150 U 99 75-125 4 25 Post Spike (1318030-PS1) Prepared: 10/18/2021 07:44 Analyzed: 10/19/2021 10:10 Source: CE15370-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.85 0.200 ug/L 4.76 0.0522 101 75-125 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch V18011 - EPA 3005A Blank (1318011-BLK3) Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 09:55 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Blank (1118011-BLK2) Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 09:59 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L LCS (1318011-BS1) Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 10:05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 197 10.0 ug/L 200 98 80-120 Barium 207 10.0 ug/L 200 103 80-120 Cadmium 19.9 1.00 ug/L 20.0 99 80-120 Chromium 199 10.0 ug/L 200 99 80-120 Lead 200 10.0 ug/L 200 100 80-120 Selenium 206 10.0 ug/L 200 103 80-120 Silver 200 10.0 ug/L 200 100 80-120 Matrix Spike (1718011-MS1) Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 10:10 Source: CE15008-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 199 10.0 ug/L 200 7.60 U 100 75-125 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 1118011 - EPA 3005A - Continued Matrix Spike (1318011-MS3) Continued Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 10:10 Source: CE15008-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Barium 221 10.0 ug/L 200 10.8 105 75-125 Cadmium 20.2 1.00 ug/L 20.0 0.360 U 101 75-125 Chromium 201 10.0 ug/L 200 1.40 U 100 75-125 Lead 204 10.0 ug/L 200 3.10 U 102 75-125 Selenium 205 10.0 ug/L 200 6.20 U 103 75-125 Silver 201 10.0 ug/L 200 1.90 U 101 75-125 Matrix Spike Dup (1318011-MSDI) Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 10:12 Source: CE15008-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 197 10.0 ug/L 200 7.60 U 99 75-125 1 20 Barium 218 10.0 ug/L 200 10.8 104 75-125 1 20 Cadmium 20.0 1.00 ug/L 20.0 0.360 U 100 75-125 1 20 Chromium 198 10.0 ug/L 200 1.40 U 99 75-125 1 20 Lead 201 10.0 ug/L 200 3.10 U 101 75-125 2 20 Selenium 204 10.0 ug/L 200 6.20 U 102 75-125 0.5 20 Silver 198 10.0 ug/L 200 1.90 U 99 75-125 2 20 Post Spike (1318011-PS3) Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 10:15 Source: CE15008-01 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 -0.00528 99 80-120 Barium 0.220 0.0100 mg/L 0.200 0.0108 105 80-120 Cadmium 0.0202 0.00100 mg/L 0.0200 1.07E-5 101 80-120 Chromium 0.201 0.0100 mg/L 0.200 0.000162 101 80-120 Lead 0.203 0.0100 mg/L 0.200 0.000124 101 80-120 Selenium 0.203 0.0100 mg/L 0.200 -0.00362 102 80-120 Silver 0.199 0.0100 mg/L 0.200 0.000102 100 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 2119030 - EPA 5030E MS Blank (1319030-BLK3) Prepared: 10/19/2021 00:00 Analyzed: 10/19/2021 09:56 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 5.3 ug/L 5.00 107 75-125 LCS (1319030-BSI) Prepared: 10/19/2021 00:00 Analyzed: 10/19/2021 09:31 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 20.0 127 80-133 Toluene-d8 5.5 ug/L 5.00 110 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 18 Of 22 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 1119030 - EPA 5030B MS - Continued Matrix Spike (1319030-MS1) Prepared: 10/19/2021 00:00 Analyzed: 10/19/2021 14:21 Source: AE08257-08 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 26 2.0 ug/L 20.0 0.80 U 131 80-133 Toluene-d8 4.9 ug/L 5.00 99 75-125 Matrix Spike Dup (1719030-MSD1) Prepared: 10/19/2021 00:00 Analyzed: 10/19/2021 14:47 Source: AE08257-08 Analvte 1,4-Dioxane Spike Source %REC RPD Result Flag POL Units Level Result %REC Limits RPD Limit Notes 26 2.0 ug/L 20.0 0.80 U 129 80-133 1 19 Toluene-d8 5.4 ug/L 5.00 108 75-125 Batch 1120025 - EPA 5030B MS Blank (1320025-BLK3) Prepared: 10/20/2021 00:00 Analyzed: 10/20/2021 10:09 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 5.4 u91L 5.00 107 75-125 LCS (1720025-BS1) Prepared: 10/20/2021 00:00 Analyzed: 10/20/2021 09:44 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 26 2.0 ug/L 25.0 103 80-133 Toluene-d8 5.4 ug/L 5.00 109 75-125 Matrix Spike (1320025-MS1) Prepared: 10/20/2021 00:00 Analyzed: 10/20/2021 18:47 Source: AE08314-01 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 240 E 2.0 ug/L 25.0 210 94 80-133 Toluene-d8 5.2 u91L 5.00 104 75-125 Matrix Spike Dup (1720025-MSD1) Prepared: 10/20/2021 00:00 Analyzed: 10/21/2021 10:10 Source: AE08314-01 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 240 E 2.0 ug/L 25.0 210 88 80-133 0.6 19 Toluene-d8 5.0 ug/L 5.00 101 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 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. 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 E U) cc O P trM J � W N CID x z p m a�oN ui N z 0 U J H Z N Za0°v z rz m a uiJ?6� tb E y � m tr a mif '8 "� z = Cn W r. a o Li� z o �, J y W c T C T4TJ� _ P G = F�J r4, j O U m Q ih c 0 6H d a x x x x c 0 U 9S'gd'JO'Pa'80'sd'6d x x x x (1I wis 009ZB' 6 xtpueiddb Qo9Z8 x x x X x V� C'7 0 0 U' � a .J rs � b � r c a aT C(, C C� Z Z•^ m = Uirz o r EL a 0 a Ci fO m �---� ,0c- e j � U Q L 0 0. � t~ � �m O r U z Q o m o m ro N a E r tv cri C c+� as Q d � Sl C] CD S r r r r r co E U 4 U HL � -� CL Q N y N m U GJ c � � e II � m d Q ¢ ti = U 2 Q a 0 J � � 3 3 n ma � �G 9 N Q Q fI W m rm @ 4 rE m E o a o :J 1 0 m m m n aEi N 9 5 pm � _ C C @ a m � E d Q O y V^ � OI m a m ti= m ° ? a Oi E Page 21 of, to >? Sample Preservation Verification 1,119 ENCO Cary Work Order: CE15370 Project: White Street Li` -Phase 1 Client: Golder Associates, Inc. (GO007) Project #: 19131339.103 Logged In: 15-Oct-21 14:21 Logged By: Rachel Ann Y nish Preservation Check Performed By. V V _ Date/Time :Q� I 11� IZ� 1 u� CE15370-01 Cant Type Pres (pH) Requirement pH Checked / €n Control pH Adjusted DateMme Adjusted Reagent Used/Comments A 250rnLP+HNO3 <2 Y/ N 1 NA Y /{N 1 NA CE15370-02 Cont. Type Pres (pH) Requirement pH Checked / in Control pH Adjusted Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y `I N 1 NA Y /,' N NA CE15370-03 Cant Type Pres (pH) pH Checked/ Date/Time pH Adjusted Reagent Used/Comments Requirement in Control Adjusted A 250mLP+HNO3 <2 ti Y `/ N / NA I Y 11 NA CE15370-04 Cant Type Pres (pH) pH Checked] pH Adjusted Date/Time Reagent Used/Comments Requirement In Control Adjusted A 250mLP+HNO3 . <2 ,Y / N I NA Y P,t`N NA Jl Rea ent Name ID 1 2 Reacient Name ID 3 4 Reacient Name ID 5 6 pH Strip ID: PH Strips COF0555 Caeimnt\Pri...... __. . GQV.1 would 1k,11CI:K.rpt Page 22 of 22 1 WORK ORDER Printed: 10/19/2021 9:24:27AM CE15370 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase I Project Number: 19131339.104 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: 15-Oct-21 14:00 Date Logged In: 15-Oct-21 14:21 Work Order Comments: C-2066 received at 2.0°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 4 Project !flame: White Street Landfill — Phase I Project Reference Number: 19131339..104 Sampling Event Date: September 12-14, 2021 Review Date: December 29, 2021 Report ##: CE15370, CE15731 COLDER MFMeeRaFwsp Initials: NTT Review: 49r r l' Persons) 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 NTT COC was properly signed by all parties. NTT Correct project name and number are on the form. Incorrect project number on COC. Should be 19131339.104 NTT Sample receipt condition at laboratory was acceptable. NTT Each sample and blank submitted for analysis appears in the report_ 2.0 SAMPLE HOLDING TIMES NTT Holding times for extraction and/or analysis were met for each analytical GOLDER ASSOCIATES INC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 4 Method (see below for reference). GOLDEP MEMBER OF WSP Review Criteria Method Anal tes Holding Time SW-846 Method 8260 and 8011 VQcs 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 5W-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW NTT Laboratory analyzed at least one internal blank for each method, where applicable. NTT Laboratory blank is interference -free. NTT Surrogate recoveries are provided for each analytical method, where applicable, NTT Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). NTT MSIMSDlLCS data results are provided for each analytical method. NTT MSIMSDlLCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). (CE15371) The 8260D LCS exhibited a high bias for lsobutyl alcohol; however, this analyte was not detected in the associated samples. (CE15371) The 8151A Continuing Calibration Verification (CCV) exhibited a high bias for 2,4-D and Pentachlorophenol; however, these analytes were not detected in the associated samples. (CE15371) The precision between duplicate spikes of Arsenic, Barium, Beryllium, Cadmium, Chromium, Cobalt, Copper, Lead, Nickel, Selenium, Silver, Tin, Vanadium, and Zinc exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these elements. F (CE15371) The spike recovery for Cyanide was outside control limits for the MS and MSD samples. The QC batch was approved based on acceptable LCS recovery of this analyte. 4.0 ANALYT5 LISTSIMETHODS NTT The proper number of constituents are present for each analyte list as identified GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL G O L D E P LABORATORY DATA REVIEW MEMBER OF W[iP Page 3 of 4 above (including detects where applicable) NTT Proper EPA SW-646 analytical methods were used for analysis. 5.0 DATA REPORTING NTT All analytical reporting associated with the event was performed by the contracted lab. NTT Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been 'flagged' with a 'B' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 1 OX for commonly detected laboratory contaminants -acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. Acetone @ 26 ug/L - Field Blank Copper @ 2.62 ug/L (J) - Field Blank NTT It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. r 1,4-Dioxane: I-1, I-2, and I-3 (x10) NTT The report provides the reporting limit for each constituent. NTT The results were reported at or below their proper reporting limits (i.e. at or below standards at MDLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. NTT No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Interim Maximum Allowable Concentrations (IMACs) or surface water standards in wells or field/equipment/trip blanks or above applicable Surface Water Standards for surface water points Barium [NC 2L = 700 un/L * 1-4 @ 828 ug/L Benzene (NC 21- =1 ug/L) • 1-1 @ 4.8 ug/L 1.4 Dioxane (NC 2L= 3 uglLl • 1-1 @ 240 ug/L • 1-2 @ 200 ug/L • 1-3 @ 350 uglL • 1-4 @ 43 ug/L r 1,4-Dichlorohenzene (NC 2L = 6 uglLl • 1-1 @ 6.7 uglL NTT No quantifiable inorganic or organic constituents were detected in a well or surface GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL G O L D E R LABORATORY DATA REVIEW MEMBER OF WSP Page 4 of 4 water point at concentrations outside of their historical range (more than 5K previous concentrations or first-time detections). 1$1 detection of 1-4 Dioxane @ MW-13- 0.80(J) NTT Other report issues/Communications with laboratory/etc.: ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Monday, November 8, 2021 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.104, Project Name/Desc: White Street LF-Phase I,II ENCO Workorder(s): CE15371 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, October 15, 2021. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Amanda L. Gaines Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of 29 PROJECT NARRATIVE Date: November 8, 2021 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11 Lab ID: CE15371 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 Isobutyl alcohol; however, this analyte was not detected in the associated samples. The 8151A Continuing Calibration Verification (CCV) exhibited a high bias for 2,4-D and Pentachlorophenol; however, these analytes were not detected in the associated samples. The precision between duplicate spikes of Arsenic, Barium, Beryllium, Cadmium, Chromium, Cobalt, Copper, Lead, Nickel, Selenium, Silver, Tin, Vanadium, and Zinc exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these elements. The spike recovery for Cyanide was outside control limits for the MS and MSD samples. The QC batch was approved based on acceptable LCS recovery of this analyte. 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 29 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-MW33 Lab ID: CE15371-01 Sampled: 10/13/21 08:41 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/11/22 10/19/21 10:14 10/20/21 13:49 EPA 6020E EPA 3005A 04/11/22 10/20/21 15:31 11/02/21 18:18 EPA 7470A EPA 245.1 11/10/21 10/20/21 15:21 10/22/21 07:55 EPA 8081E EPA 3510C 10/20/21 11/26/21 10/17/21 20:57 10/19/21 13:39 EPA 8082A EPA 3510C 10/13/22 11/26/21 10/17/21 21:04 10/19/21 13:39 EPA 8151A EPA 3510C 10/20/21 11/28/21 10/19/21 16:15 10/21/21 10:56 EPA 8260D EPA 5030B_MIS 10/27/21 10/21/21 10:13 10/21/21 15:23 EPA 8260D EPA 503013_MS 10/27/21 10/25/21 19:47 10/26/21 11:20 EPA 8270E EPA 3510C—MS 10/20/21 11/28/21 10/19/21 11:04 10/21/21 16:01 EPA 9014 Same 10/27/21 10/21/21 15:13 10/26/21 12:28 SM 4500S2 D-2011 NO PREP 10/20/21 10/20/21 16:27 10/20/21 16:45 Client ID: 4103-SWS Lab ID: CE15371-02 Sampled: 10/13/21 11:50 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/11/22 10/19/21 10:14 10/20/21 14:19 EPA 6020E EPA 3005A 04/11/22 10/20/21 15:31 11/02/21 18:22 EPA 8260D EPA 503013_MS 10/27/21 10/21/21 10:13 10/21/21 15:49 EPA 8260D EPA 503013_MS 10/27/21 10/25/21 19:47 10/26/21 11:47 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 29 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-MW33 Lab ID: CE15371-01 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 0.80 J 0.80 2.0 ug/L EPA 8260D Barium - Total 89.8 1.10 10.0 ug/L EPA 6010D Vanadium - Total 4.05 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 6.49 J 4.40 10.0 ug/L EPA 6010D Client ID: 4103-SWS Lab ID: CE15371-02 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.2 J 0.80 2.0 ug/L EPA 8260D Barium - Total 44.2 1.10 10.0 ug/L EPA 6010D Zinc - Total 7.25 1 4.40 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 of 29 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CE15371-01 Received: 10/15/21 14:00 Matrix: Ground Water Sampled: 10/13/2108:41 Work Order: CE15371 Project: White Street LF-Phase I,II Sampled By:Travis Martinez/Darren Co> Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,1-Dichloropropene [563-58-6]^ 0.15 U ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,2,4-Trichlorobenzene [120-82-1]^ 0.14 U ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,3-Dichlorobenzene [541-73-1]^ 0.15 U ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,3-Dichloropropane [142-28-9]^ 0.16 U ug/L 1 0.16 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 2,2-Dichloropropane [594-20-7]^ 0.28 U ug/L 1 0.28 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 1125035 EPA 8260D 10/26/21 11:20 RKY 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 1125035 EPA 8260D 10/26/21 11:20 RKY 3-Chloropropene [107-05-1]A 0.11 U ug/L 1 0.11 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 1125035 EPA 8260D 10/26/21 11:20 RKY Acetone [67-64-1]A 10 U ug/L 1 10 20 1125035 EPA 8260D 10/26/21 11:20 RKY Acetonitrile [75-05-8]A 5.0 U ug/L 1 5.0 10 1125035 EPA 8260D 10/26/21 11:20 RKY Acrolein [107-02-8]A 4.0 U ug/L 1 4.0 10 1125035 EPA 8260D 10/26/21 11:20 RKY Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 1125035 EPA 8260D 10/26/21 11:20 RKY Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Carbon disulfide [75-15-0]^ 1.5 U ug/L 1 1.5 5.0 1125035 EPA 8260D 10/26/21 11:20 RKY Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Chloroprene [126-99-8]A 0.64 U ug/L 1 0.64 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Dichlorodifluoromethane [75-71-8]A 0.20 U ug/L 1 0.20 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Ethyl Methacrylate [97-63-2]^ 0.38 U ug/L 1 0.38 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 11:20 RKY Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 1125035 EPA 8260D 10/26/21 11:20 RKY Isobutyl alcohol [78-83-1]^ 11 U ug/L 1 11 50 1125035 EPA 8260D 10/26/21 11:20 RKY QL-02 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. F Page 5 of 29 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CE15371-01 Received: 10/15/21 14:00 Matrix: Ground Water Sampled: 10/13/2108:41 Work Order: CE15371 Project: White Street LF-Phase I,II Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Methacrylonitrile [126-98-7]^ 4.9 U ug/L 1 4.9 10 1J25035 EPA 8260D 10/26/21 11:20 RKY Methyl Methacrylate [80-62-6]^ 0.51 U ug/L 1 0.51 1.0 1J25035 EPA 8260D 10/26/21 11:20 RKY Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 1J25035 EPA 8260D 10/26/21 11:20 RKY Naphthalene [91-20-3]^ 0.11 U ug/L 1 0.11 1.0 1J25035 EPA 8260D 10/26/21 11:20 RKY Propionitrile [107-12-0]^ 5.0 U ug/L 1 5.0 10 1J25035 EPA 8260D 10/26/21 11:20 RKY Styrene [100-42-5]^ 0.11 U ug/L 1 0.11 1.0 1J25035 EPA 8260D 10/26/21 11:20 RKY Tetrachloroethene [127-18-4]^ 0.17 U ug/L 1 0.17 1.0 1J25035 EPA 8260D 10/26/21 11:20 RKY Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 1J25035 EPA 8260D 10/26/21 11:20 RKY Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 1J25035 EPA 8260D 10/26/21 11:20 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 1J25035 EPA 8260D 10/26/21 11:20 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 1J25035 EPA 8260D 10/26/21 11:20 RKY trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 1J25035 EPA 8260D 10/26/21 11:20 RKY Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 1J25035 EPA 8260D 10/26/21 11:20 RKY Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 1J25035 EPA 8260D 10/26/21 11:20 RKY Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 1J25035 EPA 8260D 10/26/21 11:20 RKY Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 1J25035 EPA 8260D 10/26/21 11:20 RKY Xylenes(Total)[1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 1J25035 EPA 8260D 10/26/21 11:20 RKY Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 57 1 50.0 115 % 53-136 IJ25035 EPA 8260D 10126121 11:20 RKY Dibromofluoromethane 56 1 50.0 112 % 67-129 IJ25035 EPA 8260D 10126121 11:20 RKY Toluene-d8 50 1 50.0 101 % 59-134 IJ25035 EPA 6260D 10126121 11:20 RKY 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 1J19013 EPA 8270E 10/21/21 16:01 DFM 1,3,5-Trinitrobenzene [99-35-4]^ 3.0 u ug/L 1 3.0 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 1,3-Dinitrobenzene [99-65-0]^ 2.5 u ug/L 1 2.5 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 1,4-Naphthoquinone [130-15-4]^ 2.5 u ug/L 1 2.5 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 1,4-Phenylenediamine [106-50-3]^ 4.0 u ug/L 1 4.0 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 1-Naphthylamine [134-32-7]^ 2.2 u ug/L 1 2.2 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2,3,4,6-Tetrachlorophenol[58-90-2]^ 2.4 u ug/L 1 2.4 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2,4,5-Trichlorophenol[95-95-4]^ 2.5 u ug/L 1 2.5 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2,4,6-Trichlorophenol[88-06-2]^ 2.6 u ug/L 1 2.6 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2,4-Dichlorophenol[120-83-2]^ 2.6 u ug/L 1 2.6 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2,4-Di methyl phenol[105-67-9]^ 2.3 u ug/L 1 2.3 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2,4-Dinitrophenol[51-28-5]^ 2.6 u ug/L 1 2.6 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2,4-Dinitrotoluene [121-14-2]^ 2.6 u ug/L 1 2.6 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2,6-Dichlorophenol[87-65-0]^ 2.0 u ug/L 1 2.0 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2,6-Dinitrotoluene [606-20-2]^ 2.5 u ug/L 1 2.5 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2-Acetylaminofluorene [53-96-3]^ 3.1 u ug/L 1 3.1 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2-Chloronaphthalene [91-58-7]^ 2.8 u ug/L 1 2.8 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2-Chlorophenol[95-57-8]^ 2.2 u ug/L 1 2.2 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2-Methyl-4,6-dinitrophenol[534-52-1]^ 3.3 u ug/L 1 3.3 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2- Methyl naphthalene [91-57-6]^ 2.8 u ug/L 1 2.8 10 1J19013 EPA 8270E 10/21/21 16:01 DFM 2-Methylphenol[95-48-7]^ 2.0 u ug/L 1 2.0 10 1J19013 EPA 8270E 10/21/21 16:01 DFM FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 of 29 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CE15371-01 Received: 10/15/21 14:00 Matrix: Ground Water Sampled: 10/13/2108:41 Work Order: CE15371 Project: White Street LF-Phase I,II Sampled By:Travis Martinez/Darren Co> 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 1119013 EPA 8270E 10/21/21 16:01 DFM 2-Nitroaniline [88-74-4]A 2.5 U ug/L 1 2.5 10 1119013 EPA 8270E 10/21/21 16:01 DFM 2-Nitrophenol [88-75-5]A 1.1 U ug/L 1 1.1 10 1119013 EPA 8270E 10/21/21 16:01 DFM 3 & 4-Methylphenol [108-39-4/106-44-5] A 2.1 U ug/L 1 2.1 10 1119013 EPA 8270E 10/21/21 16:01 DFM 3,3'-Dichlorobenzidine [91-94-1]A 3.5 U ug/L 1 3.5 10 1119013 EPA 8270E 10/21/21 16:01 DFM 3,3'-Dimethylbenzidine [119-93-7]A 2.2 U ug/L 1 2.2 10 1119013 EPA 8270E 10/21/21 16:01 DFM 3-Methylcholanthrene [56-49-5]A 1.3 U ug/L 1 1.3 10 1119013 EPA 8270E 10/21/21 16:01 DFM 3-Nitroaniline [99-09-2]A 2.6 U ug/L 1 2.6 10 1119013 EPA 8270E 10/21/21 16:01 DFM 4-Aminobiphenyl [92-67-1]A 3.5 U ug/L 1 3.5 10 1119013 EPA 8270E 10/21/21 16:01 DFM 4-Bromophenyl-phenylether[101-55-3]A 2.4 U ug/L 1 2.4 10 1119013 EPA 8270E 10/21/21 16:01 DFM 4-Chloro-3-methylphenol[59-50-7]A 2.4 U ug/L 1 2.4 10 1119013 EPA 8270E 10/21/21 16:01 DFM 4-Chloroaniline [106-47-8]A 2.0 U ug/L 1 2.0 10 1119013 EPA 8270E 10/21/21 16:01 DFM 4-Chlorophenyl-phenylether [7005-72-3]A 2.6 U ug/L 1 2.6 10 1119013 EPA 8270E 10/21/21 16:01 DFM 4-Nitroaniline [100-01-6]A 3.2 U ug/L 1 3.2 10 1119013 EPA 8270E 10/21/21 16:01 DFM 4-Nitrophenol[100-02-7]A 2.8 U ug/L 1 2.8 10 1119013 EPA 8270E 10/21/21 16:01 DFM 5-Nitro-o-toluidine [99-55-8]A 3.2 U ug/L 1 3.2 10 1119013 EPA 8270E 10/21/21 16:01 DFM 7,12-Dimethylbenz(a)anthracene 1.4 U ug/L 1 1.4 10 1119013 EPA 8270E 10/21/21 16:01 DFM [57-97-6]A a,a-Dimethylphenethylamine [122-09-8]A 3.5 U ug/L 1 3.5 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Acenaphthene [83-32-9]A 2.7 U ug/L 1 2.7 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Acenaphthylene [208-96-8]A 2.6 U ug/L 1 2.6 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Acetophenone [98-86-2]A 2.0 U ug/L 1 2.0 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Anthracene [120-12-7]A 2.4 U ug/L 1 2.4 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Benzo(a)anthracene [56-55-3]A 2.4 U ug/L 1 2.4 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Benzo(a)pyrene [50-32-8]A 2.2 U ug/L 1 2.2 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Benzo(b)fluoranthene [205-99-2]A 2.8 U ug/L 1 2.8 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Benzo(g,h,i)perylene [191-24-2]A 2.4 U ug/L 1 2.4 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Benzo(k)fluoranthene [207-08-9]A 2.4 U ug/L 1 2.4 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Benzyl alcohol [100-51-6]A 2.4 U ug/L 1 2.4 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Bis(2-chloroethoxy)methane [111-91-1]A 2.4 U ug/L 1 2.4 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Bis(2-chloroethyl)ether [111-44-4]A 2.6 U ug/L 1 2.6 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Bis(2-chloroisopropyl)ether [108-60-1]A 2.5 U ug/L 1 2.5 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Bis(2-ethylhexyl)phthalate [117-81-7]A 1.9 U ug/L 1 1.9 5.0 1J19013 EPA 8270E 10/21/21 16:01 DFM Butylbenzylphthalate [85-68-7]A 3.8 U ug/L 1 3.8 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Chlorobenzilate [510-15-6]A 2.4 U ug/L 1 2.4 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Chrysene [218-01-9]A 2.2 U ug/L 1 2.2 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Diallate [2303-16-4]A 1.9 U ug/L 1 1.9 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Dibenzo(a,h)anthracene [53-70-3]A 2.3 U ug/L 1 2.3 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Dibenzofuran [132-64-9]A 2.6 U ug/L 1 2.6 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Diethylphthalate [84-66-2]A 2.4 U ug/L 1 2.4 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Dimethoate [60-51-5]A 2.3 U ug/L 1 2.3 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Dimethylphthalate [131-11-3]A 2.5 U ug/L 1 2.5 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Di-n-butylphthalate [84-74-2]A 2.8 U ug/L 1 2.8 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Di-n-octylphthalate [117-84-0]A 3.1 U ug/L 1 3.1 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Disulfoton [298-04-4]A 2.0 U ug/L 1 2.0 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Ethyl methanesulfonate [62-50-0]A 2.2 U ug/L 1 2.2 10 1J19013 EPA 8270E 10/21/21 16:01 DFM Famphur[52-85-7]A 2.7 U ug/L 1 2.7 10 1J19013 EPA 8270E 10/21/21 16:01 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 29 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CE15371-01 Received: 10/15/21 14:00 Matrix: Ground Water Sampled: 10/13/2108:41 Work Order: CE15371 Project: White Street LF-Phase I,II Sampled By:Travis Martinez/Darren Co> 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 [206-44-0]A 3.1 U ug/L 1 3.1 10 1119013 EPA 8270E 10/21/21 16:01 DFM Fluorene [86-73-7]A 2.5 U ug/L 1 2.5 10 1119013 EPA 8270E 10/21/21 16:01 DFM Hexachlorobenzene [118-74-1]A 2.3 U ug/L 1 2.3 10 1319013 EPA 8270E 10/21/21 16:01 DFM Hexachlorobutadiene [87-68-3]A 2.8 U ug/L 1 2.8 10 1119013 EPA 8270E 10/21/21 16:01 DFM Hexachlorocyclopentadiene [77-47-4]A 2.7 U ug/L 1 2.7 10 1319013 EPA 8270E 10/21/21 16:01 DFM Hexachloroethane [67-72-1]A 2.6 U ug/L 1 2.6 10 1119013 EPA 8270E 10/21/21 16:01 DFM Hexachloropropene[1888-71-7]A 6.8 U ug/L 1 6.8 10 1119013 EPA 8270E 10/21/21 16:01 DFM Indeno(1,2,3-cd)pyrene [193-39-5]A 2.2 U ug/L 1 2.2 10 1319013 EPA 8270E 10/21/21 16:01 DFM Isodrin [465-73-6]A 1.5 U ug/L 1 1.5 10 1119013 EPA 8270E 10/21/21 16:01 DFM Isophorone[78-59-1]A 2.5 U ug/L 1 2.5 10 1119013 EPA 8270E 10/21/21 16:01 DFM Isosafrole [120-58-1]A 2.2 U ug/L 1 2.2 10 1319013 EPA 8270E 10/21/21 16:01 DFM Kepone[143-50-0]A 7.2 U ug/L 1 7.2 20 1119013 EPA 8270E 10/21/21 16:01 DFM Methapyrilene [91-80-5]A 4.8 U ug/L 1 4.8 10 1319013 EPA 8270E 10/21/21 16:01 DFM Methyl Methanesulfonate [66-27-3]A 2.2 U ug/L 1 2.2 10 1119013 EPA 8270E 10/21/21 16:01 DFM Methyl parathion [298-00-0]A 2.5 U ug/L 1 2.5 10 1119013 EPA 8270E 10/21/21 16:01 DFM Nitrobenzene [98-95-3]A 2.5 U ug/L 1 2.5 10 1119013 EPA 8270E 10/21/21 16:01 DFM N-Nitrosodiethylamine [55-18-5]A 2.1 U ug/L 1 2.1 10 1119013 EPA 8270E 10/21/21 16:01 DFM N-Nitrosodimethylamine [62-75-9]A 1.9 U ug/L 1 1.9 10 1319013 EPA 8270E 10/21/21 16:01 DFM N-Nitrosodi-n-butylamine [924-16-3]A 2.0 U ug/L 1 2.0 10 1119013 EPA 8270E 10/21/21 16:01 DFM N-Nitroso-di-n-propylamine [621-64-7]A 2.3 U ug/L 1 2.3 10 1119013 EPA 8270E 10/21/21 16:01 DFM N-nitrosodiphenylamine/Diphenylamine 2.5 U ug/L 1 2.5 10 1119013 EPA 8270E 10/21/21 16:01 DFM [86-30-6/122-39-4]A N-Nitrosomethylethylamine [10595-95-6]A 1.9 U ug/L 1 1.9 10 1J19013 EPA 8270E 10/21/21 16:01 DFM N-Nitrosopiperidine [100-75-4]A 2.1 U ug/L 1 2.1 10 1J19013 EPA 8270E 10/21/21 16:01 DFM N-Nitrosopyrrolidine [930-55-2]A 1.9 U ug/L 1 1.9 10 1319013 EPA 8270E 10/21/21 16:01 DFM 0,0,0-Triethylphosphorothioate 2.2 U ug/L 1 2.2 10 1319013 EPA 8270E 10/21/21 16:01 DFM [126-68-1]A o-Toluidine [95-53-4]A 1.6 U ug/L 1 1.6 10 1319013 EPA 8270E 10/21/21 16:01 DFM Parathion [56-38-2]A 1.7 U ug/L 1 1.7 10 1319013 EPA 8270E 10/21/21 16:01 DFM p-Dimethylaminoazobenzene [60-11-7]A 2.6 U ug/L 1 2.6 10 1319013 EPA 8270E 10/21/21 16:01 DFM Pentachlorobenzene [608-93-5]A 2.7 U ug/L 1 2.7 10 1119013 EPA 8270E 10/21/21 16:01 DFM Pentachloronitrobenzene [82-68-8]A 1.9 U ug/L 1 1.9 10 1319013 EPA 8270E 10/21/21 16:01 DFM Phenacetin [62-44-2]A 2.7 U ug/L 1 2.7 10 1319013 EPA 8270E 10/21/21 16:01 DFM Phenanthrene [85-01-8]A 2.6 U ug/L 1 2.6 10 1319013 EPA 8270E 10/21/21 16:01 DFM Phenol[108-95-2]A 1.7 U ug/L 1 1.7 10 1319013 EPA 8270E 10/21/21 16:01 DFM Phorate [298-02-2]A 2.1 U ug/L 1 2.1 10 1319013 EPA 8270E 10/21/21 16:01 DFM Pronamide [23950-58-5]A 1.7 U ug/L 1 1.7 10 1319013 EPA 8270E 10/21/21 16:01 DFM Pyrene [129-00-0]A 3.5 U ug/L 1 3.5 10 1319013 EPA 8270E 10/21/21 16:01 DFM Safrole [94-59-7]A 2.2 U ug/L 1 2.2 10 1319013 EPA 8270E 10/21/21 16:01 DFM Thionazin [297-97-2]A 2.3 U ug/L 1 2.3 10 1319013 EPA 8270E 10/21/21 16:01 DFM Surrogates Resu/ts DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed fiy Notes 2,4,6-Tribromophenol 80 1 100 80 % 10-179 IJ19013 EPA 8270E 10121121 16:01 DFM 2-Fluorobiphenyl 38 1 50.0 76 % 10-149 IJ19013 EPA 8270E 10121121 16;01 DFM 2-Fluorophenol 58 1 100 58 % 10-110 IJ19013 EPA 8270E 10121121 16;01 DFM Nitrobenzene-d5 34 1 50.0 67 % 10-149 1J19013 EPA 8270E 10121121 16; 01 DFM Phenol-d5 54 1 100 54 % 10-88 1J19013 EPA 8270E 10121121 16;01 DFM Terphenyl-d14 44 1 50.0 88 % 10-188 IJ19013 EPA 8270E 10121121 16; 01 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 29 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CE15371-01 Received: 10/15/21 14:00 Matrix: Ground Water Sampled: 10/13/2108:41 Work Order: CE15371 Project: White Street LF-Phase I,II Sampled By:Travis Martinez/Darren Co> 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 1117001 EPA 8081E 10/19/21 13:39 LSK 4,4'-DDE [72-55-9]^ 0.048 U ug/L 1 0.048 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK 4,4'-DDT [50-29-3]A 0.049 U ug/L 1 0.049 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK Aldrin [309-00-2]^ 0.041 U ug/L 1 0.041 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK alpha-BHC [319-84-6]^ 0.036 U ug/L 1 0.036 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK beta-BHC [319-85-7]^ 0.041 U ug/L 1 0.041 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK Chlordane (tech) [12789-03-6]^ 0.37 U ug/L 1 0.37 0.50 1117001 EPA 8081E 10/19/21 13:39 LSK Chlordane -alpha [5103-71-9]^ 0.048 U ug/L 1 0.048 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK Chlordane -gamma [5103-74-2]^ 0.042 U ug/L 1 0.042 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK delta-BHC [319-86-8]^ 0.048 U ug/L 1 0.048 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK Dieldrin [60-57-1]A 0.045 U ug/L 1 0.045 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK Endosulfan I [959-98-8]^ 0.045 U ug/L 1 0.045 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK Endosulfan II[33213-65-9]^ 0.038 U ug/L 1 0.038 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK Endosulfan sulfate [1031-07-8]^ 0.032 U ug/L 1 0.032 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK Endrin [72-20-8]A 0.041 U ug/L 1 0.041 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK Endrin aldehyde [7421-93-4]^ 0.049 U ug/L 1 0.049 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK gamma-BHC [58-89-9]A 0.034 U ug/L 1 0.034 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK Heptachlor[76-44-8]A 0.047 U ug/L 1 0.047 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK Heptachlor epoxide [1024-57-3]^ 0.037 U ug/L 1 0.037 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK Methoxychlor[72-43-5]^ 0.048 U ug/L 1 0.048 0.050 1117001 EPA 8081E 10/19/21 13:39 LSK Toxaphene [8001-35-2]^ 0.28 U ug/L 1 0.28 1.0 1117001 EPA 8081E 10/19/21 13:39 LSK Surrogates Resuft DF Spike L v/ % Rec % Rec Limits Batch Method Analyzed By Notes 2,4,5,E-TCMX 0.77 1 1,00 77 % 10-139 IJ17001 EPA 8081B 101191211339 L5K Decachlorobiphenyl 0.86 1 1,00 86 % 10-122 IJ17001 EPA 8081B 101191211339 L5K Polychlorinated Biphenyls by GC ^ - ENCO Cary certified analyte [NC 591] Analvte rCAS Numberl Results Flaa Units DF MDL I•Q Batch Method Analyzed By Notes PCB-1016/1242 [12674-11-2/53469-21-9]^ 0.48 u ug/L 1 0.48 0.50 1317002 EPA 8082A 10/19/21 13:39 LSK PCB-1221 [11104-28-2]^ 0.43 u ug/L 1 0.43 0.50 1317002 EPA 8082A 10/19/21 13:39 LSK PCB-1232 [11141-16-5]^ 0.50 u ug/L 1 0.50 0.50 1317002 EPA 8082A 10/19/21 13:39 LSK PCB-1248 [12672-29-6]^ 0.45 u ug/L 1 0.45 0.50 1317002 EPA 8082A 10/19/21 13:39 LSK PCB-1254 [11097-69-1]^ 0.43 u ug/L 1 0.43 0.50 1317002 EPA 8082A 10/19/21 13:39 LSK PCB-1260 [11096-82-5]^ 0.47 u ug/L 1 0.47 0.50 1317002 EPA 8082A 10/19/21 13:39 LSK Surrogates Resu/ts DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffy Notes 2,4,5,E-TCMX 0.54 1 1.00 54 % 10-128 1JI7002 EPA 80824 10119121 13;39 LSK Decachlorobiphenyl 0.61 1 1.00 61 % 10-129 IJI7002 EPA 80824 10119121 13;39 LSK FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 of 29 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CE15371-01 Received: 10/15/21 14:00 Matrix: Ground Water Sampled: 10/13/2108:41 Work Order: CE15371 Project: White Street LF-Phase I,II Sampled By:Travis Martinez/Darren Co) 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 1J20028 EPA 7470A 10/22/21 07:55 CPH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte KAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Ay Notes Antimony [7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 1J20030 EPA 6020B 11/02/21 18:18 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 1J19007 EPA 6010D 10/20/21 13:49 JDH Barium [7440-39-3]^ 89.8 ug/L 1 1.10 10.0 1319007 EPA 6010D 10/20/21 13:49 JDH Beryllium [7440-41-7]1 0.160 U ug/L 1 0.160 1.00 1J19007 EPA 6010D 10/20/21 13:49 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 1J19007 EPA 6010D 10/20/21 13:49 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 1J19007 EPA 6010D 10/20/21 13:49 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 1J19007 EPA 6010D 10/20/21 13:49 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 1J19007 EPA 6010D 10/20/21 13:49 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 1J19007 EPA 6010D 10/20/21 13:49 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 1J19007 EPA 6010D 10/20/21 13:49 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 1J19007 EPA 6010D 10/20/21 13:49 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 1J19007 EPA 6010D 10/20/21 13:49 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 1J20030 EPA 6020B 11/02/21 18:18 RLF Tin [7440-31-5]^ 2.90 U ug/L 1 2.90 10.0 1J19007 EPA 6010D 10/20/21 13:49 JDH Vanadium [7440-62-2]^ 4.05 J ug/L 1 1.40 10.0 1319007 EPA 6010D 10/20/21 13:49 JDH Zinc [7440-66-6]^ 6.49 J ug/L 1 4.40 10.0 1319007 EPA 6010D 10/20/21 13:49 JDH Classical Chemistry Parameters ^ - ENCO Cary certified analyte [NC 591] Analyte KAS 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 1J20033 EPA 9014 10/26/21 12:28 JAH Sulfide [18496-25-8]^ 10 U ug/L 1 10 100 1J20023 >M 4500S2 D-2011 10/20/21 16:45 JOC Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 J ug/L 1 0.80 2.0 1321038 EPA 8260D 10/21/21 15:23 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes Toluene-c48 4.7 1 5.00 95 % 75-125 IJ21038 EPA 8260D 10121121 15:23 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 1J19003 EPA 8151A 10/21/21 10:56 `CV 2,4,5-TP (Silvex) [93-72-1]^ 0.44 U ug/L 1 0.44 0.50 1J19003 EPA 8151A 10/21/21 10:56 `CV 2,4-D [94-75-7]^ 0.27 U ug/L 1 0.27 0.50 1J19003 EPA 8151A 10/21/21 10:56 `CV QV-01 Dinoseb [88-85-7]^ 0.32 U ug/L 1 0.32 0.50 1J19003 EPA 8151A 10/21/21 10:56 `CV Pentachlorophenol[87-86-5]^ 0.19 U ug/L 1 0.19 0.50 1J19003 EPA 8151A 10/21/21 10:56 `CV QV-01 Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes 2,4-DC4A 1.6 1 2,00 82 % 37-134 IJ19003 EPA 8151A 10121121 10:56 FCV FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 of 29 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SW5 Lab Sample ID:CE15371-02 Received: 10/15/21 14:00 Matrix: Surface Water Sampled:10/13/21 11:50 Work Order: CE15371 Project: White Street LF-Phase I,II Sampled By:Travis Martinez/Darren Cc> Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 1125035 EPA 8260D 10/26/21 11:47 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 1125035 EPA 8260D 10/26/21 11:47 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 1125035 EPA 8260D 10/26/21 11:47 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 1125035 EPA 8260D 10/26/21 11:47 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 1125035 EPA 8260D 10/26/21 11:47 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 1125035 EPA 8260D 10/26/21 11:47 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 1125035 EPA 8260D 10/26/21 11:47 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 1125035 EPA 8260D 10/26/21 11:47 RKY Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 1125035 EPA 8260D 10/26/21 11:47 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 1125035 EPA 8260D 10/26/21 11:47 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 29 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-SW5 Lab Sample ID:CE15371-02 Received: 10/15/21 14:00 Matrix: Surface Water Sampled:10/13/21 11:50 Work Order: CE15371 Project: White Street LF-Phase I,II Sampled By:Travis Martinez/Darren Co) Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 58 1 50.0 116 % 53-136 IJ25035 EPA 8260D 10126121 11:47 RKY Dibromofluoromethane 58 1 50.0 116 % 67-129 IJ25035 EPA 8260D 10126121 11:47 RKY Toluene-d8 51 1 50.0 102 % 59-134 IJ25035 EPA 6260D 10126121 11:47 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 1J20030 EPA 6020B 11/02/21 18:22 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 1J19007 EPA 6010D 10/20/21 14:19 JDH Barium [7440-39-3]^ 44.2 ug/L 1 1.10 10.0 1119007 EPA 6010D 10/20/21 14:19 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 1J19007 EPA 6010D 10/20/21 14:19 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 1J19007 EPA 6010D 10/20/21 14:19 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 1J19007 EPA 6010D 10/20/21 14:19 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 1J19007 EPA 6010D 10/20/21 14:19 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 1J19007 EPA 6010D 10/20/21 14:19 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 1J19007 EPA 6010D 10/20/21 14:19 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 1J19007 EPA 6010D 10/20/21 14:19 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 1J19007 EPA 6010D 10/20/21 14:19 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 1J19007 EPA 6010D 10/20/21 14:19 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 1J20030 EPA 6020B 11/02/21 18:22 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 1J19007 EPA 6010D 10/20/21 14:19 JDH Zinc [7440-66-6]^ 7.25 J ug/L 1 4.40 10.0 1119007 EPA 6010D 10/20/21 14:19 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 By Notes 1,4-Dioxane [123-91-1]^ 1.2 J ug/L 1 0.80 2.0 1121038 EPA 8260D 10/21/21 15:49 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed By Notes Toluene-d8 5.4 1 5.00 108 % 75-125 IJ21038 EPA 8260D 10121121 15:49 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 29 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IJ25035 - EPA 5030B MS Blank (1325035-BLK1) Prepared: 10/25/2021 19:47 Analyzed: 10/26/2021 08:07 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 13 Of 29 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1125035 - EPA 5030B MS - Continued (� �Eo www.encolabs.com Blank (1325035-BLK1) Continued Prepared: 10/25/2021 19:47 Analyzed: 10/26/2021 08:07 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 60 ug/L 50.0 120 53-136 Dibromofluoromethane 56 ug/L 50.0 112 67-129 Toluene-d8 53 ug/L 50.0 105 59-134 LCS (1325035-BSI) Prepared: 10/25/2021 19:47 Analyzed: 10/26/2021 06:17 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 20 1.0 ug/L 20.0 98 75-133 Benzene 16 1.0 ug/L 20.0 81 80-134 Chlorobenzene 18 1.0 ug/L 20.0 90 80-120 Toluene 22 1.0 ug/L 20.0 110 71-120 Trichloroethene 18 1.0 ug/L 20.0 88 74-120 Matrix Spike (1325035-MS1) Prepared: 10/25/2021 19:47 Analyzed: 10/26/2021 06:45 Source: CE16369-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 0.21 U 105 75-133 Benzene 18 1.0 ug/L 20.0 0.15 U 88 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 94 80-120 Toluene 22 1.0 ug/L 20.0 0.14 U 112 71-120 Trichloroethene 18 1.0 ug/L 20.0 0.15 U 89 74-120 Matrix Spike Dup (1325035-MSD1) Prepared: 10/25/2021 19:47 Analyzed: 10/26/2021 07:12 Source: CE16369-07 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 21 1.0 ug/L 20.0 0.21 U 103 75-133 2 20 Benzene 17 1.0 ug/L 20.0 0.15 U 84 80-134 4 17 Chlorobenzene 18 1.0 ug/L 20.0 0.17 U 88 80-120 7 16 Toluene 22 1.0 ug/L 20.0 0.14 U 109 71-120 3 17 Trichloroethene 16 1.0 ug/L 20.0 0.15 U 82 74-120 9 22 Semivolatile Organic Compounds by GCMS - Quality Control Batch 1119013 - EPA 3510C MS FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 of 29 (� �Eo www.encolabs.com QUALITY CONTROL DATA Semivolatile Organic Compounds by GCMS - Quality Control Blank (1119013-BLK3) Prepared: 10/19/2021 11:04 Analyzed: 10/21/2021 13:23 Analyte Result Flaq PQL 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 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 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 15 Of 29 (� �Eo www.encolabs.com QUALITY CONTROL DATA Semivolatile Organic Compounds by GCMS - Quality Control Batch 1119013 - EPA 3510C MS - Continued Blank (1319013-BLK1) Continued Prepared: 10/19/2021 11:04 Analyzed: 10/21/2021 13:23 Analvte Result Flaq POL Units 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 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-Triethylphosphorothicate 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 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 16 Of 29 (� �Eo www.encolabs.com QUALITY CONTROL DATA Semivolatile Organic Compounds by GCMS - Quality Control Batch 1119013 - EPA 3510C MS - Continued Blank (1319013-BLK1) Continued Prepared: 10/19/2021 11:04 Analyzed: 10/21/2021 13:23 Analvte Result Flaq POL Units 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 RPD Level Result %REC Limits RPD Limit Notes 2,4,6-Tribromophenol 81 u91L 100 81 10-179 2-Fluorobiphenyl 36 u91L 50.0 75 10-149 2-Fluorophenol 62 u91L 100 62 10-110 Nitrobenzene-d5 37 u91L 50.0 75 10-149 Phenohd5 54 u91L 100 54 10-88 Terphenyl-d14 43 u91L 50.0 86 10-188 LCS (1319013-BSI) Prepared: 10/19/2021 11:04 Analyzed: 10/21/2021 13:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 2-Chlorophenol 41 10 ug/L 50.0 82 40-109 4-Chloro-3-methylphenol 46 10 ug/L 50.0 92 58-121 4-Nitrophenol 43 10 ug/L 50.0 86 33-105 Acenaphthene 46 10 ug/L 50.0 92 39-125 N-Nitroso-di-n-propylamine 44 10 ug/L 50.0 88 48-126 Phenol 30 10 ug/L 50.0 60 19-78 Pyrene 45 10 ug/L 50.0 89 44-137 2,4,6-Tribromophenol 95 u91L 100 95 10-179 2-Fluorobiphenyl 43 u91L 50.0 87 10-149 2-Fluorophenol 66 u91L 100 66 10-110 Nitrobenzene-d5 40 u91L 50.0 80 10-149 Phenol-d5 62 u91L 100 62 10-88 Terphenyl-d14 39 u91L 50.0 78 10-188 Matrix Spike (1319013-MS3) Prepared: 10/19/2021 11:04 Analyzed: 10/21/2021 14:26 Source: CE16089-04 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits RPD 2-Chlorophenol 41 10 ug/L 50.0 2.2 U 82 40-109 4-Chloro-3-methylphenol 47 10 ug/L 50.0 2.4 U 93 58-121 4-Nitrophenol 49 10 ug/L 50.0 2.8 U 98 33-105 Acenaphthene 47 10 ug/L 50.0 2.7 U 93 39-125 N-Nitroso-di-n-propylamine 43 10 ug/L 50.0 2.3 U 86 48-126 Phenol 32 10 ug/L 50.0 1.7 U 64 19-78 Pyrene 47 10 ug/L 50.0 3.5 U 95 44-137 2,4,6-Tribromophenol 96 u91L 100 96 10-179 2-Fluorobiphenyl 45 u91L 50.0 90 10-149 2-Fluorophenol 69 u91L 100 69 10-110 Nitrobenzene-d5 40 u91L 50.0 80 10-149 Phenol-d5 65 u91L 100 65 10-88 Terphenyl-d14 39 u91L 50.0 78 10-188 RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 17 of 29 (� �Eo www.encolabs.com QUALITY CONTROL DATA Semivolatile Organic Compounds by GCMS - Quality Control Batch 1119013 - EPA 3510C MS - Continued Matrix Spike Dup (1319013-MSDI) Prepared: 10/19/2021 11:04 Analyzed: 10/21/2021 14:57 Source: CE16089-04 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 2-Chlorophenol 38 10 ug/L 50.0 2.2 U 76 40-109 8 22 4-Chloro-3-methylphenol 44 10 ug/L 50.0 2.4 U 87 58-121 7 22 4-Nitrophenol 47 10 ug/L 50.0 2.8 U 93 33-105 5 27 Acenaphthene 44 10 ug/L 50.0 2.7 U 88 39-125 6 25 N-Nitroso-di-n-propylamine 40 10 ug/L 50.0 2.3 U 80 48-126 8 23 Phenol 31 10 ug/L 50.0 1.7 U 61 19-78 4 18 Pyrene 45 10 ug/L 50.0 3.5 U 89 44-137 6 24 2,4,6-Tribromophenol 93 ug/L 100 93 10-179 2-Fluorobiphenyl 41 u91L 50.0 83 10-149 2-Fluorophenol 65 u91L 100 65 10-110 Nitrobenzene-d5 40 u91L 50.0 81 10-149 Phenol-d5 62 u91L 100 62 10-88 Terphenyhd14 41 u91L 50.0 82 10-188 Organochlorine Pesticides by GC - Quality Control Batch 1117001 - EPA 3510C Blank (1117001-BLK3) Prepared: 10/17/2021 20:57 Analyzed: 10/19/2021 11:45 Analvte Result Flaq POL Units 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 Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes 2,4,5,E-TCMX 0.80 u91L 1.00 80 10-139 Decachlorobiphenyl 0.86 u91L 1.00 66 10-122 LCS (1717001-BS1) Prepared: 10/17/2021 20:57 Analyzed: 10/19/2021 11:58 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 18 Of 29 (� �Eo www.encolabs.com QUALITY CONTROL DATA Organochlorine Pesticides by GC - Quality Control Batch 1117001 - EPA 3510C - Continued LCS (1317001-BSI) Continued Prepared: 10/17/2021 20:57 Analyzed: 10/19/2021 11:58 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 4,4'-DDT 1.2 0.050 ug/L 1.00 119 37-139 Dieldrin 1.0 0.050 ug/L 1.00 100 46-132 Endrin 1.0 0.050 ug/L 1.00 103 43-133 2,4,5,E-TCMX 0.89 ug/L 1.00 89 10-139 Decachloroblphenyl 0.89 ug/L 1.00 69 10-122 Matrix Spike (1717001-MS1) Prepared: 10/17/2021 20:57 Analyzed: 10/19/2021 12:21 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 4,4'-DDT 1.2 0.050 ug/L 1.00 0.049 U 118 37-139 Dieldrin 1.1 0.050 ug/L 1.00 0.045 U 108 46-132 Endrin 1.1 0.050 ug/L 1.00 0.041 U 110 43-133 2,4,5,E-TCMX 0.75 ug/L 1.00 75 10-139 Decachlorobiphenyl 0.87 U91L 1.00 87 10-122 Matrix Spike Dup (1317001-MSD1) Prepared: 10/17/2021 20:57 Analyzed: 10/19/2021 12:35 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 4,4'-DDT 1.2 0.050 ug/L 1.00 0.049 U 123 37-139 4 26 Dieldrin 1.0 0.050 ug/L 1.00 0.045 U 105 46-132 3 27 Endrin 1.1 0.050 ug/L 1.00 0.041 U 108 43-133 2 26 2,4,5,E-TCMX 0.71 ug/L 1.00 71 10-139 Decachlorobiphenyl 0.79 U91L 1.00 79 10-122 Polychlorinated Biphenyls by GC - Quality Control Batch 1117002 - EPA 3510C Blank (1317002-BLK1) Prepared: 10/17/2021 21:04 Analyzed: 10/19/2021 12:47 Analvte Result Flaq POL 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,E-TCMX 0.58 ug/L 1.00 58 10-128 Decachlorobiphenyl 0.65 ug/L 1.00 65 10-129 LCS (1717002-BS1) Prepared: 10/17/2021 21:04 Analyzed: 10/19/2021 13:00 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits RPD PCB-1016/1242 7.6 0.50 ug/L 10.0 76 43-123 PCB-1260 7.2 0.50 ug/L 10.0 72 41-125 2,4,5,E-TCMX 0.57 ug/L 1.00 57 10-128 Decachlorobipheny/ 0.56 U91L 1.00 56 10-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. RPD Limit Notes Page 19 of 29 (� �Eo www.encolabs.com QUALITY CONTROL DATA Polychlorinated Biphenyls by GC - Quality Control Batch 1117002 - EPA 3510C - Continued Matrix Spike (1317002-MS1) Prepared: 10/17/2021 21:04 Analyzed: 10/19/2021 13:13 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes PCB-1016/1242 8.5 0.50 ug/L 10.0 0.48 U 85 43-123 PCB-1260 8.1 0.50 ug/L 10.0 0.47 U 81 41-125 2,4,5,6-TCMX 0.56 u91L 1.00 56 10-128 Decachloroblphenyl 0.68 u91L 1.00 68 10-129 Matrix Spike Dup (1317002-MSD1) Prepared: 10/17/2021 21:04 Analyzed: 10/19/2021 13:26 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes PCB-1016/1242 8.5 0.50 ug/L 10.0 0.48 U 85 43-123 0.3 23 PCB-1260 7.7 0.50 ug/L 10.0 0.47 U 77 41-125 4 31 2,4,5,E-TCMX 0.64 u91L 1.00 64 10-128 Decachlorobiphenyl 0.68 u91L 1.00 66 10-129 Metals by EPA 6000/7000 Series Methods - Quality Control Batch 1120028 - EPA 245.1 Blank (1320028-BLK3) Prepared: 10/20/2021 15:21 Analyzed: 10/22/2021 07:33 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 0.150 U 0.200 ug/L Blank (1320028-BLK2) Prepared: 10/20/2021 15:21 Analyzed: 10/22/2021 07:35 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 3.00 U 4.00 ug/L LCS (1320028-BS3) Prepared: 10/20/2021 15:21 Analyzed: 10/22/2021 07:39 Spike Source %REC RPD Analvte Result Flaa Q Units Level Result %REC Limits RPD Limit Notes Mercury 5.46 0.200 ug/L 5.00 109 80-120 Matrix Spike (1320028-MS1) Prepared: 10/20/2021 15:21 Analyzed: 10/22/2021 07:44 Source: CE15555-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.96 0.200 ug/L 5.00 0.150 U 99 75-125 Matrix Spike Dup (1720028-MSD1) Prepared: 10/20/2021 15:21 Analyzed: 10/22/2021 07:46 Source: CE15555-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.99 0.200 ug/L 5.00 0.150 U 100 75-125 0.8 25 Post Spike (i]20028-PS1) Prepared: 10/20/2021 15:21 Analyzed: 10/22/2021 07:48 Source: CE35555-01 Spike Source %REC RPD Analvte Result Flaa Q Units Level Result %REC Limits RPD Limit Notes Mercury 5.02 0.200 ug/L 4.76-0.000286 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 2O Of 29 0Nk"q09 www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IJ19007 - EPA 3005A Blank (1319007-BLK1) Prepared: 10/19/2021 10:14 Analyzed: 10/20/2021 13:45 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L 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 (1J19007-BSI) Prepared: 10/19/2021 10:14 Analyzed: 10/20/2021 13:52 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limi RPD Limit Notes Arsenic 201 10.0 ug/L 200 101 80-120 Barium 208 10.0 ug/L 200 104 80-120 Beryllium 19.9 1.00 ug/L 20.0 100 80-120 Cadmium 20.2 1.00 ug/L 20.0 101 80-120 Chromium 200 10.0 ug/L 200 100 80-120 Cobalt 204 10.0 ug/L 200 102 80-120 Copper 197 10.0 ug/L 200 98 80-120 Lead 202 10.0 ug/L 200 101 80-120 Nickel 205 10.0 ug/L 200 103 80-120 Selenium 203 10.0 ug/L 200 101 80-120 Silver 199 10.0 ug/L 200 100 80-120 Tin 204 10.0 ug/L 200 102 80-120 Vanadium 198 10.0 ug/L 200 99 80-120 Zinc 209 10.0 ug/L 200 105 80-120 Matrix Spike (1319007-MS3) Prepared: 10/19/2021 10:14 Analyzed: 10/20/2021 13:58 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes Arsenic 203 10.0 ug/L 200 7.60 U 102 75-125 Barium 303 10.0 ug/L 200 89.8 106 75-125 Beryllium 20.5 1.00 ug/L 20.0 0.160 U 102 75-125 Cadmium 20.3 1.00 ug/L 20.0 0.360 U 101 75-125 Chromium 204 10.0 ug/L 200 1.40 U 102 75-125 Cobalt 208 10.0 ug/L 200 1.40 U 104 75-125 Copper 200 10.0 ug/L 200 1.60 U 100 75-125 Lead 208 10.0 ug/L 200 3.10 U 104 75-125 Nickel 213 10.0 ug/L 200 2.20 U 106 75-125 Selenium 205 10.0 ug/L 200 6.20 U 103 75-125 Silver 203 10.0 ug/L 200 1.90 U 102 75-125 Tin 211 10.0 ug/L 200 2.90 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 21 Of 29 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 1119007 - EPA 3005A - Continued Matrix Spike (1319007-MS3) Continued Prepared: 10/19/2021 10:14 Analyzed: 10/20/2021 13:58 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Vanadium 207 10.0 ug/L 200 4.05 102 75-125 Zinc 221 10.0 ug/L 200 6.49 107 75-125 Matrix Spike Dup (1]19007-MSD1) Prepared: 10/19/2021 10:14 Analyzed: 10/20/2021 14:01 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 347 10.0 ug/L 400 7.60 U 87 75-125 52 20 QM-11 Barium 438 10.0 ug/L 400 89.8 87 75-125 37 20 QM-11 Beryllium 35.4 1.00 ug/L 40.0 0.160 U 89 75-125 53 20 QM-11 Cadmium 34.9 1.00 ug/L 40.0 0.360 U 87 75-125 53 20 QM-11 Chromium 351 10.0 ug/L 400 1.40 U 88 75-125 53 20 QM-11 Cobalt 356 10.0 ug/L 400 1.40 U 89 75-125 53 20 QM-11 Copper 358 10.0 ug/L 400 1.60 U 90 75-125 57 20 QM-11 Lead 354 10.0 ug/L 400 3.10 U 89 75-125 52 20 QM-11 Nickel 349 10.0 ug/L 400 2.20 U 87 75-125 49 20 QM-11 Selenium 359 10.0 ug/L 400 6.20 U 90 75-125 55 20 QM-11 Silver 351 10.0 ug/L 400 1.90 U 88 75-125 53 20 QM-11 Tin 358 10.0 ug/L 400 2.90 U 90 75-125 52 20 QM-11 Vanadium 353 10.0 ug/L 400 4.05 87 75-125 52 20 QM-11 Zinc 361 10.0 ug/L 400 6.49 89 75-125 48 20 QM-11 Post Spike (1]19007-PS1) Prepared: 10/19/2021 10:14 Analyzed: 10/20/2021 14:03 Ill Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.201 0.0100 mg/L 0.200 -0.00424 100 80-120 Barium 0.296 0.0100 mg/L 0.200 0.0898 103 80-120 Beryllium 0.0201 0.00100 mg/L 0.0200 -7.40E-6 101 80-120 Cadmium 0.0198 0.00100 mg/L 0.0200 -0.000159 99 80-120 Chromium 0.199 0.0100 mg/L 0.200 0.000380 99 80-120 Cobalt 0.204 0.0100 mg/L 0.200 -0.000250 102 80-120 Copper 0.198 0.0100 mg/L 0.200 -0.000624 99 80-120 Lead 0.204 0.0100 mg/L 0.200 -0.000385 102 80-120 Nickel 0.210 0.0100 mg/L 0.200 0.000374 105 80-120 Selenium 0.207 0.0100 mg/L 0.200 -0.00161 104 80-120 Silver 0.201 0.0100 mg/L 0.200 -0.000122 101 80-120 Tin 0.206 0.0100 mg/L 0.200 -0.00162 103 80-120 Vanadium 0.204 0.0100 mg/L 0.200 0.00405 100 80-120 Zinc 0.218 0.0100 mg/L 0.200 0.00649 106 80-120 Batch 1120030 - EPA 3005A Blank (1320030-BLK1) Prepared: 10/20/2021 15:31 Analyzed: 11/02/2021 16:50 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 22 of 29 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IJ20030 - EPA 3005A - Continued LCS (1320030-BS1) Prepared: 10/20/2021 15:31 Analyzed: 11/02/2021 16:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 19.6 1.00 ug/L 20.0 98 80-120 Thallium 20.5 1.00 ug/L 20.0 103 80-120 Matrix Spike (1320030-MS3) Prepared: 10/20/2021 15:31 Analyzed: 11/02/2021 16:58 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 44.4 2.00 ug/L 40.0 0.740 U 111 75-125 Thallium 41.4 2.00 ug/L 40.0 0.220 U 104 75-125 Matrix Spike Dup (1320030-MSD1) Prepared: 10/20/2021 15:31 Analyzed: 11/02/2021 17:03 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 43.0 2.00 ug/L 40.0 0.740 U 107 75-125 3 20 Thallium 40.0 2.00 ug/L 40.0 0.220 U 100 75-125 4 20 Post Spike (1320030-PS3) Prepared: 10/20/2021 15:31 Analyzed: 11/02/2021 17:56 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 23.9 1.00 ug/L 20.0 0.131 119 75-125 Thallium 22.9 1.00 ug/L 20.0 -0.000239 114 75-125 Classical Chemistry Parameters - Quality Control Batch V20023 - NO PREP Blank (1320023-BLK3) Prepared: 10/20/2021 16:27 Analyzed: 10/20/2021 16:45 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes Sulfide 10 U 100 ug/L LCS (1320023-BSI) Prepared: 10/20/2021 16:27 Analyzed: 10/20/2021 16:45 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 0.38 0.10 mg/L 0.401 95 80-120 Duplicate (1320023-DUPl) Prepared: 10/20/2021 16:27 Analyzed: 10/20/2021 16:45 Source: CE15371-01 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 (1320023-MS3) Prepared: 10/20/2021 16:27 Analyzed: 10/20/2021 16:45 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 380 100 ug/L 401 10 U 95 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 23 of 29 (� �Eo www.encolabs.com QUALITY CONTROL DATA Classical Chemistry Parameters - Quality Control Batch IJ20023 - NO PREP - Continued Matrix Spike Dup (1320023-MSDI) Prepared: 10/20/2021 16:27 Analyzed: 10/20/2021 16:45 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Sulfide 380 100 ug/L 401 10 U 94 80-120 0.5 25 Batch V20033 - Same Blank (1320033-BLK3) Prepared: 10/21/2021 15:13 Analyzed: 10/26/2021 12:09 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes Cyanide (total) 4.9 U 10 ug/L LCS (1320033-BSI) Prepared: 10/21/2021 15:13 Analyzed: 10/26/2021 12:11 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cyanide (total) 140 10 ug/L 150 96 85-115 Matrix Spike (1320033-MS1) Prepared: 10/21/2021 15:13 Analyzed: 10/26/2021 12:18 Source: CE15182-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cyanide (total) 100 10 ug/L 150 4.9 U 69 85-115 QM-07 Matrix Spike (1720033-MS2) Prepared: 10/21/2021 15:13 Analyzed: 10/26/2021 12:23 Source: CE15272-02 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 U 76 85-115 QM-07 Matrix Spike Dup (1]20033-MSDI) Prepared: 10/21/2021 15:13 Analyzed: 10/26/2021 12:19 Source: CE15182-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cyanide (total) 99 10 ug/L 150 4.9 U 66 85-115 4 20 QM-07 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 1.721038 - EPA 5030B MS Blank (1121038-BLK3) Prepared: 10/21/2021 00:00 Analyzed: 10/21/2021 11:02 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-& 5.4 ug/L 5.00 107 75-125 LCS (1321038-BS1) Prepared: 10/21/2021 00:00 Analyzed: 10/21/2021 10:36 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-& 5.3 ug/L 5.00 107 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 24 of 29 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 112103E - EPA 5030B MS - Continued Matrix Spike (1323038-MS1) Prepared: 10/21/2021 00:00 Analyzed: 10/21/2021 18:23 Source: AE08316-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 28 2.0 ug/L 25.0 1.4 105 80-133 Toluene-d8 5.4 u91L 5.00 107 75-125 Matrix Spike Dup (1721038-MSD1) Prepared: 10/21/2021 00:00 Analyzed: 10/21/2021 18:48 Source: AE08316-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 28 2.0 ug/L 25.0 1.4 105 80-133 0.5 19 Toluene-d8 5.4 u91L 5.00 108 75-125 Chlorinated Herbicides by GC - Quality Control Batch 1119003 - EPA 3510C Blank (1319003-BLK3) Prepared: 10/19/2021 08:00 Analyzed: 10/20/2021 14:10 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-DCAA 1.9 u91L 2.00 96 37-134 Blank (1319003-BLK2) Prepared: 10/19/2021 08:00 Analyzed: 10/20/2021 14:35 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 2,4,5-T 1.4 U 2.5 ug/L 2,4,5-TP (Silvex) 2.2 U 2.5 ug/L 2,4-D 1.4 U 2.5 ug/L Dinoseb 1.6 U 2.5 ug/L Pentachlorophenol 0.95 U 2.5 ug/L 2, 4-DCAA 8.2 u91L 10.0 82 37-134 LCS (1319003-BS3) Prepared: 10/19/2021 08:00 Analyzed: 10/20/2021 15:01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 2,4,5-TP (Silvex) 1.3 0.50 ug/L 2.00 66 24-135 2,4-D 1.8 0.50 ug/L 2.00 89 20-134 2,4-DC4A 1.6 u91L 2.00 82 37-134 Matrix Spike (1319003-MS3) Prepared: 10/19/2021 08:00 Analyzed: 10/20/2021 17:07 Source: AE08113-01 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 8.8 2.5 ug/L 10.0 1.4 U 88 20-134 2,4-DC,4A 7.8 u91L 10.0 78 37-134 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 25 Of 29 (� �Eo www.encolabs.com QUALITY CONTROL DATA Chlorinated Herbicides by GC - Quality Control Batch 1119003 - EPA 3510C - Continued Matrix Spike Dup (1319003-MSDI) Prepared: 10/19/2021 08:00 Analyzed: 10/20/2021 17:33 Source: AE08113-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 2,4,5-TP (Silvex) 8.8 2.5 ug/L 10.0 2.2 U 88 24-135 19 19 2.4-D 8.8 2.5 ua/L 10.0 1.4 U 88 20-134 0.6 19 2, 4-DC,4A 10 ug/L 10.0 100 37-134 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 26 Of 29 (� �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-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 27 of 29 E d v 0 V �i cc 0 0 W a: 0 N U LL 0 Z a U N W a= 0 a 0 m Q z 0 R a: LLI U) z 0 U J Fa— z W 2 z 0 cc z LU o 4� y ca m N E r U C H w F N a Q w X i F E .r �( I W "acne n 'b m E "' E a� l7 E 6 8 Oui 0 o Q o 0 coo n `' m a S-009tiWS api .jjnSa X o c"i a E E 7 o . _r o °1 l i U b s WIS P101 apiueAD s x m a1 = E O gS'45'Qd'4N'�a aa'o'J'p ]'aB'gE'9b �kl 3 � o ° 3 m US'8S Q n n �Uz'nAV eS G5'QdlN'n:1�a'o'J'R'3 P5'�991i�'v+ 'Eli v T ffl 2 T m Q T m N 3 = Z x1puaddy 90LZS x m O m (z a: z E 01 W!S aDQZWP9Pu61x.9 aasze'Z xlpueddV ao9z9 G m v s a QI ills Oo9Z8' 4 xlpueddV 009Z8 U E E E m z x!puaddV V L918`Z xlpusddV VZ%q X75 Z xipuaddy 91R08 X V v rv_ � 8 o� v E a _ � � 3 L N (D m N O ro m �J w r��1}1� V a ¢ ro co m oCIOw n CL a 4 a .90 s m ? m y E m r 9 y Z U cn m O N CID CD � o � -47 ^�. C 'C Q N 10 -� C z d o` T r1 l� ra try r' u7 N ly r s c .^ Y Z� •- G O a " o g � W t1? m r d pJ cs co) E E o Page 28 of 29 �i17 ram. E m V U x Sample Preservation Verification ENCO Cary 9 9 CE-: O Work Order: CE15371 Project: White Street LF-Phase 1,11 Client: Golder Associates, Inc. (GO007) Project#: 1668421.106 Logged ln: 15-Oct-21 14:24 1Logged By: Rachel Ann YLhPreserva#ion Check Performed By: Datel7ime: J CE15371-01 Cont Type Pres (pH) Requirement PH Checked f In Control pH Adjusted Date�me Adiusted Reagent Used/Cammerats E 250rnLA (PEST) Pest pH 5-9 Y N/ NA Y 1 NA F 250mLP+HNO3 <2 Y/ N/ NA Y N I NA G 250mLP+NaOH >12 Y I N/ NA Y N/ NA H 250mLP+ZnAc+NaOH >9 Y N/ NA Y I NA CE15371-02 cunt Type Pres (pH) pH Checked / pH Adjusted Date?Time Reagent Used/Comments Requirement In Control Adjusted A 250mLP+HNO3 <2 Y I N i NA Y N / NA Rea ent Name ID 1 2 Reagent Name ID 3 4 Rea ent Name ID 5 6 pH Strip ID: PH Strips COF0555 CAelmntlPrim twrw_rreservation Check. rpt Page 29 of 29 WORK ORDER Printed: 10/19/2021 9:23:23AM CE15371 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Not Assigned Project: White Street LF-Phase I,II Project Number: 19131339.104 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: 15-Oct-21 14:00 Date Logged In: 15-Oct-21 14:24 Work Order Comments: C-1882 received at 2.0°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 ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Monday, November 8, 2021 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.104, Project Name/Desc: White Street LF-Phase I,II,III SW ENCO Workorder(s): CE15372 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Friday, October 15, 2021. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Amanda L. Gaines Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of 2 PROJECT NARRATIVE Date: November 8, 2021 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11,111 SW Lab ID: CE15372 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 low bias for Methylene chloride; however this analyte was detected in the CRL standard, verifying instrument sensitivity. The Continuing Calibration Verification (CCV) exhibited a high bias for 1,1,1-Trichloroethane, 1, 1 -Dichloroethene, and Benzene; however, these analytes were not detected in the associated samples. The spike recovery for Trichloroethene was outside control limits for the MS sample, the precision between duplicate spikes of Toluene exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these analytes. Quality Control Remarks No Comments Other Comments All samples received under this work order arrived in acceptable conditions. The samples were not checked for chlorine, as it is not required. The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of the report. Released By: Environmental Conservation Laboratories, Inc. Amanda Gaines Project Manager FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 of 2 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303/12-SW3 Lab ID: CE15372-01 Sampled: 10/14/21 15:14 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/12/22 10/18/21 07:51 10/20/21 11:05 EPA 6020E EPA 3005A 04/12/22 10/20/21 15:31 11/02/21 18:26 EPA 8260D EPA 503013_MS 10/28/21 10/19/21 00:00 10/19/21 17:21 EPA 8260D EPA 503013_MS 10/28/21 10/26/21 16:26 10/27/21 12:18 Client ID: 4303/12-SW2 Lab ID: CE15372-02 Sampled: 10/14/21 14:30 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/12/22 10/18/21 07:51 10/20/21 11:07 EPA 6020E EPA 3005A 04/12/22 10/20/21 15:31 11/02/21 19:11 EPA 8260D EPA 503013_MS 10/28/21 10/19/21 00:00 10/19/21 17:47 EPA 8260D EPA 503013_MS 10/28/21 10/26/21 16:26 10/27/21 12:47 Client ID: 4303/12-SW4 Lab ID: CE15372-03 Sampled: 10/14/21 15:15 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 04/12/22 10/18/21 07:51 10/20/21 11:10 EPA 6020B EPA 3005A 04/12/22 10/20/21 15:31 11/02/21 19:20 EPA 8260D EPA 503013_MS 10/28/21 10/19/21 00:00 10/19/21 18:12 EPA 8260D EPA 5030B_MS 10/28/21 10/26/21 16:26 10/27/21 13:17 Client ID: 4303/12-Trip Blank Lab ID: CE15372-04 Sampled: 10/14/21 14:30 Received: 10/15/21 14:00 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 5030B_MS 10/28/21 10/19/21 00:00 10/19/21 18:38 EPA 8260D EPA 5030B_MS 10/28/21 10/26/21 16:26 10/27/21 07:24 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 2 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303/12-SW3 Lab ID: CE15372-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 43.8 1.10 10.0 ug/L EPA 6010D Chromium - Total 2.33 J 1.40 10.0 ug/L EPA 6010D Copper - Total 1.68 J 1.60 10.0 ug/L EPA 6010D Zinc - Total 4.54 J 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW2 Lab ID: CE15372-02 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.4 J 0.80 2.0 ug/L EPA 8260D Barium - Total 41.4 1.10 10.0 ug/L EPA 6010D Client ID: 4303/12-SW4 Lab ID: CE15372-03 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 0.92 J 0.80 2.0 ug/L EPA 8260D Barium - Total 43.1 1.10 10.0 ug/L EPA 6010D Copper - Total 1.82 J 1.60 10.0 ug/L EPA 6010D Zinc - Total 10.5 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 2 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW1 Lab Sample ID:CE15372-01 Received: 10/15/21 14:00 Matrix: Surface Water Sampled:10/14/21 15:14 Work Order: CE15372 Project: White Street LF-Phase I,II,III SW Sampled By: Darren Cox Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY QV-01 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY QV-01 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 1126030 EPA 8260D 10/27/21 12:18 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 1126030 EPA 8260D 10/27/21 12:18 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 1126030 EPA 8260D 10/27/21 12:18 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 1126030 EPA 8260D 10/27/21 12:18 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 1126030 EPA 8260D 10/27/21 12:18 RKY Benzene [71-43-2]A 0.15 u ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY QV-01 Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 1126030 EPA 8260D 10/27/21 12:18 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 1126030 EPA 8260D 10/27/21 12:18 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY A-07 Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 1126030 EPA 8260D 10/27/21 12:18 RKY Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 1126030 EPA 8260D 10/27/21 12:18 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 1126030 EPA 8260D 10/27/21 12:18 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 of 21 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW1 Lab Sample ID:CE15372-01 Received: 10/15/21 14:00 Matrix: Surface Water Sampled:10/14/21 15:14 Work Order: CE15372 Project: White Street LF-Phase I,II,III SW Sampled By: Darren Cox Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 50 1 50.0 99 % 53-136 IJ26030 EPA 8260D 10127121 12:18 RKY Dibromofluoromethane 49 1 50.0 97 % 67-129 IJ26030 EPA 6260D 10127121 12:18 RKY Toluene-d8 49 1 50.0 98 % 59-134 IJ26030 EPA 6260D 10127121 12:18 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-0]^ 0.370 U ug/L 1 0.370 1.00 1J20030 EPA 6020B 11/02/21 18:26 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 1J18011 EPA 6010D 10/20/21 11:05 JDH Barium [7440-39-3]^ 43.8 ug/L 1 1.10 10.0 1118011 EPA 6010D 10/20/21 11:05 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 1J18011 EPA 6010D 10/20/21 11:05 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 1J18011 EPA 6010D 10/20/21 11:05 JDH Chromium [7440-47-3]^ 2.33 J ug/L 1 1.40 10.0 1118011 EPA 6010D 10/20/21 11:05 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 1J18011 EPA 6010D 10/20/21 11:05 JDH Copper[7440-50-8]^ 1.68 J ug/L 1 1.60 10.0 1118011 EPA 6010D 10/20/21 11:05 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 1J18011 EPA 6010D 10/20/21 11:05 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 1J18011 EPA 6010D 10/20/21 11:05 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 1J18011 EPA 6010D 10/20/21 11:05 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 1J18011 EPA 6010D 10/20/21 11:05 JDH Thallium [7440-28-0]^ 0.110 U ug/L 1 0.110 1.00 1J20030 EPA 6020B 11/02/21 18:26 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 1J18011 EPA 6010D 10/20/21 11:05 JDH Zinc[7440-66-6]^ 4.54 J ug/L 1 4.40 10.0 1118011 EPA 6010D 10/20/21 11:05 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 1J19030 EPA 8260D 10/19/21 17:21 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed By Notes Toluene-d8 5.6 1 5.00 112 % 75-125 IJ19030 EPA 8260D 10119121 17:21 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 2 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW2 Lab Sample ID:CE15372-02 Received: 10/15/21 14:00 Matrix: Surface Water Sampled:10/14/21 14:30 Work Order: CE15372 Project: White Street LF-Phase I,II,III SW Sampled By: Darren Cox Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY QV-01 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY QV-01 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 1126030 EPA 8260D 10/27/21 12:47 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 1126030 EPA 8260D 10/27/21 12:47 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 1126030 EPA 8260D 10/27/21 12:47 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 1126030 EPA 8260D 10/27/21 12:47 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 1126030 EPA 8260D 10/27/21 12:47 RKY Benzene [71-43-2]A 0.15 u ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY QV-01 Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 1126030 EPA 8260D 10/27/21 12:47 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 1126030 EPA 8260D 10/27/21 12:47 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY A-07 Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 1126030 EPA 8260D 10/27/21 12:47 RKY Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 1126030 EPA 8260D 10/27/21 12:47 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 1126030 EPA 8260D 10/27/21 12:47 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 of 2 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW2 Lab Sample ID:CE15372-02 Received: 10/15/21 14:00 Matrix: Surface Water Sampled:10/14/21 14:30 Work Order: CE15372 Project: White Street LF-Phase I,II,III SW Sampled By: Darren Cox Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 50 1 50.0 100 % 53-136 IJ26030 EPA 6260D 10127121 12:47 RKY Dibromofluoromethane 49 1 50.0 98 % 67-129 IJ26030 EPA 6260D 10127121 12:47 RKY Toluene-d8 49 1 50.0 98 % 59-134 IJ26030 EPA 6260D 10127121 12:47 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-0]^ 0.370 U ug/L 1 0.370 1.00 1J20030 EPA 6020B 11/02/21 19:11 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 1J18011 EPA 6010D 10/20/21 11:07 JDH Barium [7440-39-3]^ 41.4 ug/L 1 1.10 10.0 1118011 EPA 6010D 10/20/21 11:07 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 1J18011 EPA 6010D 10/20/21 11:07 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 1J18011 EPA 6010D 10/20/21 11:07 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 1J18011 EPA 6010D 10/20/21 11:07 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 1J18011 EPA 6010D 10/20/21 11:07 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 1J18011 EPA 6010D 10/20/21 11:07 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 1J18011 EPA 6010D 10/20/21 11:07 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 1J18011 EPA 6010D 10/20/21 11:07 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 1J18011 EPA 6010D 10/20/21 11:07 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 1J18011 EPA 6010D 10/20/21 11:07 JDH Thallium [7440-28-0]^ 0.110 U ug/L 1 0.110 1.00 1J20030 EPA 6020B 11/02/21 19:11 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 1J18011 EPA 6010D 10/20/21 11:07 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 1J18011 EPA 6010D 10/20/21 11:07 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]^ 1.4 J ug/L 1 0.80 2.0 1119030 EPA 8260D 10/19/21 17:47 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed By Notes Toluene-d8 5.4 1 5.00 107 % 75-125 IJ19030 EPA 8260D 10119121 17:47 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 2 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW4 Lab Sample ID:CE15372-03 Received: 10/15/21 14:00 Matrix: Surface Water Sampled:10/14/21 15:15 Work Order: CE15372 Project: White Street LF-Phase I,II,III SW Sampled By: Darren Cox Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY QV-01 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY QV-01 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 1126030 EPA 8260D 10/27/21 13:17 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 1126030 EPA 8260D 10/27/21 13:17 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 1126030 EPA 8260D 10/27/21 13:17 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 1126030 EPA 8260D 10/27/21 13:17 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 1126030 EPA 8260D 10/27/21 13:17 RKY Benzene [71-43-2]A 0.15 u ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY QV-01 Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 1126030 EPA 8260D 10/27/21 13:17 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 1126030 EPA 8260D 10/27/21 13:17 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY A-07 Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 1126030 EPA 8260D 10/27/21 13:17 RKY Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 1126030 EPA 8260D 10/27/21 13:17 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 1126030 EPA 8260D 10/27/21 13:17 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 of 21 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW4 Lab Sample ID:CE15372-03 Received: 10/15/21 14:00 Matrix: Surface Water Sampled:10/14/21 15:15 Work Order: CE15372 Project: White Street LF-Phase I,II,III SW Sampled By: Darren Cox Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 50 1 50.0 99 % 53-136 IJ26030 EPA 8260D 10127121 13:17 RKY Dibromofluoromethane 50 1 50.0 99 % 67-129 IJ26030 EPA 6260D 10127121 13:17 RKY Toluene-d8 51 1 50.0 101 % 59-134 1J26030 EPA 6260D 10127121 13:17 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-0]^ 0.370 U ug/L 1 0.370 1.00 1J20030 EPA 6020B 11/02/21 19:20 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 1J18011 EPA 6010D 10/20/21 11:10 JDH Barium [7440-39-3]^ 43.1 ug/L 1 1.10 10.0 1118011 EPA 6010D 10/20/21 11:10 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 1J18011 EPA 6010D 10/20/21 11:10 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 1J18011 EPA 6010D 10/20/21 11:10 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 1J18011 EPA 6010D 10/20/21 11:10 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 1J18011 EPA 6010D 10/20/21 11:10 JDH Copper[7440-50-8]^ 1.82 J ug/L 1 1.60 10.0 1118011 EPA 6010D 10/20/21 11:10 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 1J18011 EPA 6010D 10/20/21 11:10 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 1J18011 EPA 6010D 10/20/21 11:10 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 1J18011 EPA 6010D 10/20/21 11:10 JDH Silver[7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 1J18011 EPA 6010D 10/20/21 11:10 JDH Thallium [7440-28-0]^ 0.110 U ug/L 1 0.110 1.00 1J20030 EPA 6020B 11/02/21 19:20 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 1J18011 EPA 6010D 10/20/21 11:10 JDH Zinc [7440-66-6]^ 10.5 ug/L 1 4.40 10.0 1118011 EPA 6010D 10/20/21 11:10 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes 1,4-Dioxane [123-91-1]^ 0.92 J ug/L 1 0.80 2.0 1119030 EPA 8260D 10/19/21 18:12 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed By Notes Toluene-d8 5.3 1 5.00 106 % 75-125 IJ19030 EPA 8260D 10119121 18:12 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 of 2 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-Trip Blank Lab Sample ID:CE15372-04 Received: 10/15/21 14:00 Matrix: Water Sampled:10/14/21 14:30 Work Order: CE15372 Project: White Street LF-Phase I,II,III SW Sampled By: ENCO Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY QV-01 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY QV-01 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 1126030 EPA 8260D 10/27/21 07:24 RKY 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 1126030 EPA 8260D 10/27/21 07:24 RKY 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 1126030 EPA 8260D 10/27/21 07:24 RKY Acetone [67-64-1]A 10 u ug/L 1 10 20 1126030 EPA 8260D 10/27/21 07:24 RKY Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 1126030 EPA 8260D 10/27/21 07:24 RKY Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY QV-01 Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 1126030 EPA 8260D 10/27/21 07:24 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 1126030 EPA 8260D 10/27/21 07:24 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY A-07 Styrene [100-42-5]A 0.11 Ll ug/L 1 0.11 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 1126030 EPA 8260D 10/27/21 07:24 RKY Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 1126030 EPA 8260D 10/27/21 07:24 RKY Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 1126030 EPA 8260D 10/27/21 07:24 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 21 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-Trip Blank Lab Sample ID:CE15372-04 Received: 10/15/21 14:00 Matrix: Water Sampled:10/14/21 14:30 Work Order: CE15372 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 50 1 50.0 99 % 53-136 IJ26030 EPA 8260D 10127121 07:24 RKY Dibromofluoromethane 49 1 50.0 99 % 67-129 IJ26030 EPA 6260D 10127121 07:24 RKY Toluene-d8 51 1 50.0 102 % 59-134 IJ26030 EPA 6260D 10127121 07:24 RKY Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL POLL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 1J19030 EPA 8260D 10/19/21 18:38 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffly Notes Toluene-d8 5.4 1 5.00 108 %0 75-125 IJ19030 EPA 8260D 101191211828 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 2 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IJ26030 - EPA 5030B MS Blank (1326030-BLK1) Prepared: 10/26/2021 16:26 Analyzed: 10/27/2021 06:26 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 49 u9/L 50.0 99 53-136 Dibromofluoromethane 48 u9/L 50.0 96 67-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 13 of 21 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IJ26030 - EPA 5030B MS - Continued (� �Eo www.encolabs.com Blank (1326030-BLK1) Continued Prepared: 10/26/2021 16:26 Analyzed: 10/27/2021 06:26 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 49 u91L 50.0 99 59-134 LCS (1726030-BS1) Prepared: 10/26/2021 16:26 Analyzed: 10/27/2021 04:28 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 18 1.0 ug/L 20.0 91 75-133 Benzene 16 1.0 ug/L 20.0 81 80-134 Chlorobenzene 18 1.0 ug/L 20.0 89 80-120 Toluene 15 1.0 ug/L 20.0 74 71-120 Trichloroethene 23 1.0 ug/L 20.0 115 74-120 Matrix Spike (1326030-MS1) Prepared: 10/26/2021 16:26 Analyzed: 10/27/2021 04:57 Source: CE16369-10 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 25 1.0 ug/L 20.0 0.21 U 127 75-133 Benzene 25 1.0 ug/L 20.0 0.15 U 124 80-134 Chlorobenzene 21 1.0 ug/L 20.0 0.17 U 104 80-120 Toluene 21 1.0 ug/L 20.0 0.14 U 104 71-120 Trichloroethene 25 1.0 ug/L 20.0 0.15 U 124 74-120 QM-07 Matrix Spike Dup (1]26030-MSD1) Prepared: 10/26/2021 16:26 Analyzed: 10/27/2021 05:26 Source: CE16369-10 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 23 1.0 ug/L 20.0 0.21 U 116 75-133 9 20 Benzene 21 1.0 ug/L 20.0 0.15 U 107 80-134 15 17 Chlorobenzene 18 1.0 ug/L 20.0 0.17 U 88 80-120 16 16 Toluene 18 1.0 ug/L 20.0 0.14 U 88 71-120 18 17 QM-11 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 107 74-120 15 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch I118011 - EPA 3005A Blank (1318011-BLK1) Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 09:55 Analvte Arsenic Barium Beryllium Cadmium Chromium Cobalt Copper Lead Nickel Selenium Silver Vanadium Result Flaq POL Units 7.60 U 10.0 ug/L 1.10 U 10.0 ug/L 0.160 U 1.00 ug/L 0.360 U 1.00 ug/L 1.40 U 10.0 ug/L 1.40 U 10.0 ug/L 1.60 U 10.0 ug/L 3.10 U 10.0 ug/L 2.20 U 10.0 ug/L 6.20 U 10.0 ug/L 1.90 U 10.0 ug/L 1.40 U 10.0 ug/L Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 14 Of 2 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 1118011 - EPA 3005A - Continued Blank (1318011-BLK1) Continued Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 09:55 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Zinc 4.40 U 10.0 ug/L Blank (1318011-BLK2) Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 09:59 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 (1318011-BSI) Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 10:05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 197 10.0 ug/L 200 98 80-120 Barium 207 10.0 ug/L 200 103 80-120 Beryllium 19.8 1.00 ug/L 20.0 99 80-120 Cadmium 19.9 1.00 ug/L 20.0 99 80-120 Chromium 199 10.0 ug/L 200 99 80-120 Cobalt 203 10.0 ug/L 200 101 80-120 Copper 197 10.0 ug/L 200 99 80-120 Lead 200 10.0 ug/L 200 100 80-120 Nickel 203 10.0 ug/L 200 101 80-120 Selenium 206 10.0 ug/L 200 103 80-120 Silver 200 10.0 ug/L 200 100 80-120 Vanadium 198 10.0 ug/L 200 99 80-120 Zinc 207 10.0 ug/L 200 103 80-120 Matrix Spike (1318011-MS3) Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 10:10 Source: CE15008-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 199 10.0 ug/L 200 7.60 U 100 75-125 Barium 221 10.0 ug/L 200 10.8 105 75-125 Beryllium 20.2 1.00 ug/L 20.0 0.160 U 101 75-125 Cadmium 20.2 1.00 ug/L 20.0 0.360 U 101 75-125 Chromium 201 10.0 ug/L 200 1.40 U 100 75-125 Cobalt 205 10.0 ug/L 200 1.40 U 103 75-125 Copper 201 10.0 ug/L 200 2.99 99 75-125 Lead 204 10.0 ug/L 200 3.10 U 102 75-125 Nickel 205 10.0 ug/L 200 2.20 U 102 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 15 Of 2 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch 1118011 - EPA 3005A - Continued Matrix Spike (1318011-MS3) Continued Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 10:10 Source: CE15008-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Selenium 205 10.0 ug/L 200 6.20 U 103 75-125 Silver 201 10.0 ug/L 200 1.90 U 101 75-125 Vanadium 199 10.0 ug/L 200 1.40 U 99 75-125 Zinc 301 10.0 ug/L 200 99.4 101 75-125 Matrix Spike Dup (1718011-MSD1) Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 10:12 Source: CE15008-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 197 10.0 ug/L 200 7.60 U 99 75-125 1 20 Barium 218 10.0 ug/L 200 10.8 104 75-125 1 20 Beryllium 20.0 1.00 ug/L 20.0 0.160 U 100 75-125 0.9 20 Cadmium 20.0 1.00 ug/L 20.0 0.360 U 100 75-125 1 20 Chromium 198 10.0 ug/L 200 1.40 U 99 75-125 1 20 Cobalt 203 10.0 ug/L 200 1.40 U 101 75-125 1 20 Copper 199 10.0 ug/L 200 2.99 98 75-125 1 20 Lead 201 10.0 ug/L 200 3.10 U 101 75-125 2 20 Nickel 201 10.0 ug/L 200 2.20 U 101 75-125 2 20 Selenium 204 10.0 ug/L 200 6.20 U 102 75-125 0.5 20 Silver 198 10.0 ug/L 200 1.90 U 99 75-125 2 20 Vanadium 197 10.0 ug/L 200 1.40 U 99 75-125 0.7 20 Zinc 300 10.0 ug/L 200 99.4 100 75-125 0.4 20 Post Spike (1318011-PS1) Prepared: 10/18/2021 07:51 Analyzed: 10/20/2021 10:15 Source: CE15008-01 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 -0.00528 99 80-120 Barium 0.220 0.0100 mg/L 0.200 0.0108 105 80-120 Beryllium 0.0202 0.00100 mg/L 0.0200 3.92E-5 101 80-120 Cadmium 0.0202 0.00100 mg/L 0.0200 1.07E-5 101 80-120 Chromium 0.201 0.0100 mg/L 0.200 0.000162 101 80-120 Cobalt 0.205 0.0100 mg/L 0.200 -6.03E-5 103 80-120 Copper 0.201 0.0100 mg/L 0.200 0.00299 99 80-120 Lead 0.203 0.0100 mg/L 0.200 0.000124 101 80-120 Nickel 0.201 0.0100 mg/L 0.200 -4.22E-5 101 80-120 Selenium 0.203 0.0100 mg/L 0.200 -0.00362 102 80-120 Silver 0.199 0.0100 mg/L 0.200 0.000102 100 80-120 Vanadium 0.199 0.0100 mg/L 0.200 -0.000389 100 80-120 Zinc 0.303 0.0100 mg/L 0.200 0.0994 102 80-120 Batch 1120030 - EPA 3005A Blank (1320030-BLK1) Prepared: 10/20/2021 15:31 Analyzed: 11/02/2021 16:50 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 16 of 2 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IJ20030 - EPA 3005A - Continued LCS (1320030-BS1) Prepared: 10/20/2021 15:31 Analyzed: 11/02/2021 16:54 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 19.6 1.00 ug/L 20.0 98 80-120 Thallium 20.5 1.00 ug/L 20.0 103 80-120 Matrix Spike (1320030-MS3) Prepared: 10/20/2021 15:31 Analyzed: 11/02/2021 16:58 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 44.4 2.00 ug/L 40.0 0.740 U 111 75-125 Thallium 41.4 2.00 ug/L 40.0 0.220 U 104 75-125 Matrix Spike Dup (1320030-MSD1) Prepared: 10/20/2021 15:31 Analyzed: 11/02/2021 17:03 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 43.0 2.00 ug/L 40.0 0.740 U 107 75-125 3 20 Thallium 40.0 2.00 ug/L 40.0 0.220 U 100 75-125 4 20 Post Spike (1320030-PS3) Prepared: 10/20/2021 15:31 Analyzed: 11/02/2021 17:56 Source: CE15371-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 23.9 1.00 ug/L 20.0 0.131 119 75-125 Thallium 22.9 1.00 ug/L 20.0 -0.000239 114 75-125 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch IJ19030 - EPA 5030E MS Blank (1319030-BLK3) Prepared: 10/19/2021 00:00 Analyzed: 10/19/2021 09:56 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 52 u91L 5.00 107 75-125 LCS (1319030-BSI) Prepared: 10/19/2021 00:00 Analyzed: 10/19/2021 09:31 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 20.0 127 80-133 Toluene-d8 5.5 u91L 5.00 110 75-125 Matrix Spike (1319030-MS1) Prepared: 10/19/2021 00:00 Analyzed: 10/19/2021 14:21 Source: AE08257-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 26 2.0 ug/L 20.0 0.80 U 131 80-133 Toluene-& 4.9 u91L 5.00 99 75-125 Matrix Spike Dup (1319030-MSD1) Prepared: 10/19/2021 00:00 Analyzed: 10/19/2021 14:47 Source: AE08257-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 17 Of 2 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch 1119030 - EPA 5030B MS - Continued Matrix Spike Dup (1319030-MSDI) Continued Prepared: 10/19/2021 00:00 Analyzed: 10/19/2021 14:47 Source: AE08257-08 Analvte Result Flaq 1,4-Dioxane 26 POL Units 2.0 ug/L Spike Source Level Result 20.0 0.80 U %REC RPD %REC Limits RPD Limit Notes 129 80-133 1 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 18 Of 2 (� �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. A-07 Analyte biased low in LCS but detected in the reporting limit standard. Since the analyte in the associated sample was not detected, there is no impact on data quality. QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. QM-11 Precision between duplicate matrix spikes of the same sample was outside acceptance limits. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 19 of 2 o a i7 N O E '0i� O H O a Q r H ro X U.)O n cis w u� 113 O a a j J Z' cc ` o r-j U N ul 0 C g Q G w Q N N U z ILo ro v m 2 i 9, z a a p 2 � uz'A'LVOS X x x x F5 W O(iI W!S aosze' 4 XlRugdciH CjQSZB x x x x � v N Q Im ti U s � x LL U m z .2 W g _ 0 W N' xm Q m V! VJ u/ cr v M LLJ LL z . m Q o at-n £ t. m 7 O u V z E� m.N 1v c V n E � y� o Z a° m z- N r m M a a a p a s m us m ¢ W o p 1 � O N U � LO 0 ro ti C t` A s u m a � m Q a OL 0 �_ V7 � ❑ (f} irk (n �"' CD vi Y U2 op o Q O O O O z C7 Q GO w d d d `tt d ro m U ¢O UV F�v � A � U m � N ( v £ U ro C rE £ E a o Q 7 0 C U / ' ' 3 3 C A i � y m 5, m ¢ OC Ift m E E _ E E 0 0 0 a ¢ 0 m m m n m N ¢ � m U m ❑ m t J O �. m m � E o Page 20 of 2 �f! U Sample Preservation Verification ENCO Cary =eN =:OD Work Order: CE15372 Project: White Street LF-Phase 1,11,111 SW Client: Golder Associates, Inc. (GO007) Project #: 1668421.107 Logged In: 15-Oct-21 14:32 Logged By: Rachel Ann 1('5-17'1 ish Preservation Check Performed By: Date/Time: 1 CE15372-01 Cont Type Pres (pH) Requirement pH Checked / I In Control pH Adjusted DateiTime Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y)/ N/ NA I Y J"o NA CE15372-02 Cont Type Pres (pH) pH Checked l pH Adjusted Date/Time I Reagent Used/Comments Requirement In Control Adiusted A 2-OMLP�HN103 <2 Y ,1 N 1 NA Y/ N i NA y CE15372-03 Cont Type Pres (pH) pH Checked / pH Adjusted Date/Time I Reagent Used/Comments Requirement In Control Adiusted A 250rn1_CJ+HNO3 <2 Y J N/ NA I Y h N) NA Rea ent Name ID 1 2 Reagent Name ID 3 4 Reagent Name ID 5 6 pH Strip ID: PH Strips COF0555 C:lelmntlPn, PLtiwnu—ri iesel vationL,neCK, rpt Page 21 of 21 WORK ORDER Printed: 10/19/2021 9:22:45AM CE15372 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase I,II,III SW Project Number: 19131339.104 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: 15-Oct-21 14:00 Date Logged In: 15-Oct-21 14:32 Work Order Comments: C-2093 received at 2.0°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 ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Monday, December 13, 2021 WSP, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 19131339.104, Project Name/Desc: White Street LF-Phase I,II,III SW ENCO Workorder(s): CE18614 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Wednesday, November 24, 2021. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Amanda L. Gaines Project Manager Enclosure(s) FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of 4 PROJECT NARRATIVE Date: December 13, 2021 Client: WSP, Inc. (G0007) Project: White Street LF-Phase 1,11,111 SW Lab ID: CE18614 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 1,1,1-Trichloroethene, 1,2,3-Trichloropropane, 1,2-Dibromo-3-chloropropane, 2-Butanone, 2-Hexanone, 4-Methyl-2-pentanone, Acetone, Acrylonitrile, Bromodichloromethane, and trans- 1,4-Dichloro-2-butene; however, these analytes were not detected in the associated samples. The spike recoveries for Antimony and Silver were outside control limits for the Post Digestion spike samples. 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 4 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-I2/ SW-3 Lab ID: CE18614-01 Sampled: 11/23/21 13:09 Received: 11/24/21 12:15 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A O5/22/22 11/30/21 01:57 12/01/21 12:04 EPA 6020E EPA 3005A 05/22/22 11/30/21 02:09 12/09/21 03:25 EPA 8260D EPA 503013_MS 12/07/21 11/30/21 19:01 12/01/21 12:58 EPA 8260D EPA 503013_MS 12/07/21 12/01/21 12:44 12/02/21 06:10 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 14 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-I2/ SW-3 Lab ID: CE18614-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 51.2 1.10 10.0 ug/L EPA 6010D Chromium - Total 2.82 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 4.77 J 4.40 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 14 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-I2/ SW-3 Lab Sample ID:CE18614-01 Received: 11/24/21 12:15 Matrix: Ground Water Sampled:11/23/21 13:09 Work Order: CE18614 Project: White Street LF-Phase I,II,III SW Sampled By: Nicolas Tejada Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY QV-01 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY QV-01 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY QV-01 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 11<30031 EPA 8260D 12/01/21 12:58 RKY QV-01 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 11<30031 EPA 8260D 12/01/21 12:58 RKY QV-01 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 11<30031 EPA 8260D 12/01/21 12:58 RKY QV-01 Acetone [67-64-1]A 10 u ug/L 1 10 20 11<30031 EPA 8260D 12/01/21 12:58 RKY QV-01 Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 11<30031 EPA 8260D 12/01/21 12:58 RKY QV-01 Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY QV-01 Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Styrene[100-42-5]A 0.11 u ug/L 1 0.11 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Tetrachloroethene [127-18-4]A 0.17 u ug/L 1 0.17 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 u ug/L 1 0.70 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY QV-01 Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Vinyl acetate [108-05-4]A 0.95 u ug/L 1 0.95 5.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 11<30031 EPA 8260D 12/01/21 12:58 RKY Xylenes (Total) [1330-20-7]A 0.45 u ug/L 1 0.45 3.0 11<30031 EPA 8260D 12/01/21 12:58 RKY FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 of 14 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-I2/ SW-3 Lab Sample ID:CE18614-01 Received: 11/24/21 12:15 Matrix: Ground Water Sampled:11/23/21 13:09 Work Order: CE18614 Project: White Street LF-Phase I,II,III SW Sampled By: Nicolas Tejada Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 47 1 40.0 117 % 53-136 IK30031 EPA 8260D 12101121 12:58 RKY Dibromofluoromethane 52 1 40.0 129 % 67-129 IK30031 EPA 8260D 12101121 12:58 RKY Toluene-& 50 1 40.0 124 % 59-134 IK30031 EPA 6260D 12101121 12:58 RKY Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-0]^ 0.740 U ug/L 2 0.740 2.00 11(30003 EPA 6020B 12/09/21 03:25 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 11(30001 EPA 6010D 12/01/21 12:04 JDH Barium [7440-39-3]^ 51.2 ug/L 1 1.10 10.0 1K30001 EPA 6010D 12/01/21 12:04 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 11(30001 EPA 6010D 12/01/21 12:04 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 11(30001 EPA 6010D 12/01/21 12:04 JDH Chromium [7440-47-3]^ 2.82 J ug/L 1 1.40 10.0 1K30001 EPA 6010D 12/01/21 12:04 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 11(30001 EPA 6010D 12/01/21 12:04 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 11(30001 EPA 6010D 12/01/21 12:04 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 11(30001 EPA 6010D 12/01/21 12:04 JDH Nickel[7440-02-0]^ 2.20 U ug/L 1 2.20 10.0 11(30001 EPA 6010D 12/01/21 12:04 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 11(30001 EPA 6010D 12/01/21 12:04 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 11(30001 EPA 6010D 12/01/21 12:04 JDH Thallium [7440-28-0]^ 0.220 U ug/L 2 0.220 2.00 11(30003 EPA 6020B 12/09/21 03:25 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 11(30001 EPA 6010D 12/01/21 12:04 JDH Zinc[7440-66-6]^ 4.77 J ug/L 1 4.40 10.0 1K30001 EPA 6010D 12/01/21 12:04 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 1L01041 EPA 8260D 12/02/21 06:10 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.4 1 5.00 107 % 75-125 ILO1041 EPA 8260D 12102121 06:10 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 4 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IK30031 - EPA 5030B MS Blank (1K30031-BLKS) Prepared: 11/30/2021 19:01 Analyzed: 12/01/2021 10:38 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 47 u91L 40.0 118 53-136 Dibromofluoromethane 48 u91L 40.0 121 67-129 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 7 of 14 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch IK30031 - EPA 5030B MS - Continued (� �Eo www.encolabs.com Blank (SK30031-BLKS) Continued Prepared: 11/30/2021 19:01 Analyzed: 12/01/2021 10:38 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 49 u91L 40.0 123 59-134 LCS (1K30031-BS3) Prepared: 11/30/2021 19:01 Analyzed: 12/01/2021 08:45 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 19 1.0 ug/L 20.0 93 80-134 Chlorobenzene 18 1.0 ug/L 20.0 90 80-120 Toluene 18 1.0 ug/L 20.0 92 71-120 Trichloroethene 21 1.0 ug/L 20.0 104 74-120 Matrix Spike (1K30031-MS1) Prepared: 11/30/2021 19:01 Analyzed: 12/01/2021 09:13 Source: CE18334-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 23 1.0 ug/L 20.0 0.21 U 115 75-133 Benzene 21 1.0 ug/L 20.0 0.15 U 103 80-134 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 99 80-120 Toluene 20 1.0 ug/L 20.0 0.14 U 101 71-120 Trichloroethene 24 1.0 ug/L 20.0 0.15 U 118 74-120 Matrix Spike Dup (1K30031-MSD1) Prepared: 11/30/2021 19:01 Analyzed: 12/01/2021 09:41 Source: CE18334-09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 20 1.0 ug/L 20.0 0.21 U 102 75-133 12 20 Benzene 18 1.0 ug/L 20.0 0.15 U 92 80-134 12 17 Chlorobenzene 18 1.0 ug/L 20.0 0.17 U 90 80-120 10 16 Toluene 18 1.0 ug/L 20.0 0.14 U 92 71-120 9 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 107 74-120 10 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IK30001 - EPA 3005A Blank (1K30001-BLKS) Prepared: 11/30/2021 01:57 Analyzed: 12/01/2021 10:35 Analvte Arsenic Barium Beryllium Cadmium Chromium Cobalt Copper Lead Nickel Selenium Silver Vanadium Result Flaq POL Units 7.60 U 10.0 ug/L 1.10 U 10.0 ug/L 0.160 U 1.00 ug/L 0.360 U 1.00 ug/L 1.40 U 10.0 ug/L 1.40 U 10.0 ug/L 1.60 U 10.0 ug/L 3.10 U 10.0 ug/L 2.20 U 10.0 ug/L 6.20 U 10.0 ug/L 1.90 U 10.0 ug/L 1.40 U 10.0 ug/L Spike Source %REC RPD Level Result %REC Limits RPD Limit Notes FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 14 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IK30001 - EPA 3005A - Continued Blank (SK30001-BLKS) Continued Prepared: 11/30/2021 01:57 Analyzed: 12/01/2021 10:35 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Zinc 4.40 U 10.0 ug/L LCS (1K30001-BS1) Prepared: 11/30/2021 01:57 Analyzed: 12/01/2021 10:47 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 209 10.0 ug/L 200 104 80-120 Barium 217 10.0 ug/L 200 108 80-120 Beryllium 20.7 1.00 ug/L 20.0 103 80-120 Cadmium 20.7 1.00 ug/L 20.0 103 80-120 Chromium 205 10.0 ug/L 200 102 80-120 Cobalt 213 10.0 ug/L 200 106 80-120 Copper 203 10.0 ug/L 200 102 80-120 Lead 214 10.0 ug/L 200 107 80-120 Nickel 220 10.0 ug/L 200 110 80-120 Selenium 221 10.0 ug/L 200 110 80-120 Silver 206 10.0 ug/L 200 103 80-120 Vanadium 204 10.0 ug/L 200 102 80-120 Zinc 218 10.0 ug/L 200 109 80-120 Matrix Spike (1K30001-MS3) Prepared: 11/30/2021 01:57 Analyzed: 12/01/2021 10:50 Source: CE15779-14 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 186 10.0 ug/L 200 7.60 U 93 75-125 Barium 197 10.0 ug/L 200 2.15 97 75-125 Beryllium 19.0 1.00 ug/L 20.0 0.160 U 95 75-125 Cadmium 18.8 1.00 ug/L 20.0 0.360 U 94 75-125 Chromium 188 10.0 ug/L 200 1.40 U 94 75-125 Cobalt 192 10.0 ug/L 200 1.40 U 96 75-125 Copper 187 10.0 ug/L 200 1.60 U 94 75-125 Lead 191 10.0 ug/L 200 3.10 U 96 75-125 Nickel 200 10.0 ug/L 200 5.52 97 75-125 Selenium 200 10.0 ug/L 200 6.20 U 100 75-125 Silver 186 10.0 ug/L 200 1.90 U 93 75-125 Vanadium 186 10.0 ug/L 200 1.40 U 93 75-125 Zinc 202 10.0 ug/L 200 4.40 U 101 75-125 Matrix Spike Dup (1K30001-MSD1) Prepared: 11/30/2021 01:57 Analyzed: 12/01/2021 10:52 Source: CE15779-14 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 200 10.0 ug/L 200 7.60 U 100 75-125 7 20 Barium 211 10.0 ug/L 200 2.15 104 75-125 7 20 Beryllium 20.3 1.00 ug/L 20.0 0.160 U 101 75-125 6 20 Cadmium 20.0 1.00 ug/L 20.0 0.360 U 100 75-125 6 20 Chromium 203 10.0 ug/L 200 1.40 U 101 75-125 7 20 Cobalt 205 10.0 ug/L 200 1.40 U 102 75-125 7 20 Copper 201 10.0 ug/L 200 1.60 U 100 75-125 7 20 Lead 200 10.0 ug/L 200 3.10 U 100 75-125 5 20 Nickel 206 10.0 ug/L 200 5.52 100 75-125 3 20 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 9 Of 14 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IK30001 - EPA 3005A - Continued Matrix Spike Dup (1K30001-MSD1) Continued Prepared: 11/30/2021 01:57 Analyzed: 12/01/2021 10:52 Source: CE15779-14 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Selenium 183 10.0 ug/L 200 6.20 U 92 75-125 9 20 Silver 196 10.0 ug/L 200 1.90 U 98 75-125 5 20 Vanadium 198 10.0 ug/L 200 1.40 U 99 75-125 6 20 Zinc 214 10.0 ug/L 200 4.40 U 107 75-125 6 20 Post Spike (1K30001-PS1) Prepared: 11/30/2021 01:57 Analyzed: 12/01/2021 10:55 Source: CE15779-14 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.205 0.0100 mg/L 0.200 -0.00261 103 80-120 Barium 0.216 0.0100 mg/L 0.200 0.00215 107 80-120 Beryllium 0.0208 0.00100 mg/L 0.0200 -4.82E-6 104 80-120 Cadmium 0.0206 0.00100 mg/L 0.0200 2.75E-5 103 80-120 Chromium 0.206 0.0100 mg/L 0.200 1.50E-5 103 80-120 Cobalt 0.210 0.0100 mg/L 0.200 -0.000523 105 80-120 Copper 0.205 0.0100 mg/L 0.200 0.000671 102 80-120 Lead 0.208 0.0100 mg/L 0.200 0.000230 104 80-120 Nickel 0.218 0.0100 mg/L 0.200 0.00552 106 80-120 Selenium 0.211 0.0100 mg/L 0.200 0.00448 103 80-120 Silver 0.144 0.0100 mg/L 0.200 5.72E-5 72 80-120 QM-08 Vanadium 0.204 0.0100 mg/L 0.200 -0.000206 102 80-120 Zinc 0.221 0.0100 mg/L 0.200 0.00410 108 80-120 Batch IK30003 - EPA 3005A Blank (1K30003-BLK1) Prepared: 11/30/2021 02:09 Analyzed: 12/06/2021 22:08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L Blank (1K30003-BLK2) Prepared: 11/30/2021 02:09 Analyzed: 12/06/2021 22:12 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (1K30003-BS1) Prepared: 11/30/2021 02:09 Analyzed: 12/06/2021 22:16 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 41.7 2.00 ug/L 40.0 104 80-120 Thallium 40.8 2.00 ug/L 40.0 102 80-120 Matrix Spike (1K30003-MS3) Prepared: 11/30/2021 02:09 Analyzed: 12/06/2021 22:21 Source: CE17201-01 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 Thallium 39.6 2.00 ug/L 40.0 0.220 U 99 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 of 14 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch IK30003 - EPA 3005A - Continued Matrix Spike Dup (1K30003-MSD1) Prepared: 11/30/2021 02:09 Analyzed: 12/06/2021 22:25 Source: CE17201-01 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.4 2.00 ug/L 40.0 0.740 U 106 75-125 1 20 Thallium 39.7 2.00 ug/L 40.0 0.220 U 99 75-125 0.2 20 Post Spike (iK30003-PSI) Prepared: 11/30/2021 02:09 Analyzed: 12/06/2021 22:29 Source: CE17201-01 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes Antimony 25.4 1.00 ug/L 20.0 0.0502 127 75-125 QM-08 Thallium 24.2 1.00 ug/L 20.0 0.00485 121 75-125 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch IL01041 - EPA 5030E MS Blank (1L01041-BLK1) Prepared: 12/01/2021 12:44 Analyzed: 12/01/2021 23:45 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 5.2 ug/L 5.00 103 75-125 LCS (111-03041-BSI) Prepared: 12/01/2021 12:44 Analyzed: 12/01/2021 22:02 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 101 80-133 Toluene-d8 5.6 ug/L 5.00 111 75-125 Matrix Spike (IL03041-MS1) Prepared: 12/01/2021 12:44 Analyzed: 12/01/2021 22:28 Source: AE09455-01 Spike Source %REC RPD Analvte Result Flag 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 5.4 ug/L 5.00 108 75-125 Matrix Spike Dup (1L03041-MSD1) Prepared: 12/01/2021 12:44 Analyzed: 12/01/2021 22:53 Source: AE09455-01 Spike Source %REC RPD Analvte Result Flag POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 27 2.0 ug/L 25.0 0.80 U 107 80-133 0.6 19 Toluene-d8 5.2 ug/L 5.00 105 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 11 Of 14 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QM-08 Post -digestion spike did not meet method requirements due to confirmed matrix effects (dilution test). QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 12 of 4 E 0 m ca m 0- N W o� QP Q N m ro m i h F C H U) LU m m � c �@ o m a �❑" �o a m m u7 w a: z° m J � Q C m c U S E E o s n m 9 -T !J ^ ll 2 c d Z t m a z c a m 10, o x N ^ m j a g d � U m w m 0 q Z s a ¢ ¢ z E fn L O 3 � � `c d � o N m a> 9� 'n'e, n v 1 k t 1.115` IT. F� C � N O N E , I C 0 C y [\ 1 3 C ° U a � j u 5 fl x m m 8 O o YJ m / N ,ri m m I u 1 E ! m Pi O 0 m O m Z 4 Z C� U m �p W � � E D � 0 - 0 q a a. a ¢ m o N N C ❑ 10 r N m v LU 4• 4 U 1 � .r � n N f ro C �{ U Ie�f y❑ 3 vz-o L y o a `n m LO V.L Ir m C7 1 m a U E c. E � E x i m Page 13 of 14 Sample Preservation Verification ENCO Cary Work Order: CE18614 Project: White Street LF-Phase I Client: Golder Associates, Inc. (GO007) Project #: 19131339.103 Logged Ins 24-Nov-21 13:22 J C �.1 ) Logged By: Samantha L Preservation Check Performed By: Date/Time: CE-18614-01 2 13_m Cent Type Pres (pH) Requirement pH Checked / Control pH Adjusted Date�me Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y N / NA Y / N / NA Rea ent Name ID 1 2 pH Strip ID: C:IELMNTIPrintlwko_Preservation Check. rpt Reagent Name ID 3 4 Rea ent Name In 6 -- ` s Page 14 of 14 WORK ORDER Printed: 11/29/2021 9:02:03AM CE18614 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Amanda L. Gaines Project: White Street LF-Phase I,II,III SW Project Number: 19131339.104 PO #: Report To: Golder Associates, Inc. (G0007) Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 Phone: (336) 852-4903 Fax: (336) 852-4904 Invoice To: City of Greensboro (CI034) Richard Lovett 401 Patton Ave Greensboro, NC 27406 Phone :(336) 373-4188 Fax: Received By: David E. Wilder Date Received: 24-Nov-21 12:15 Logged In By: Samantha L Hyatt Date Logged In: 24-Nov-21 13:22 Work Order Comments: Default Cooler received at 0.1°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received N COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 4 Project Name: White Street Landfill — Phase 1, 11III SW Project Reference Number., 19131339.104 Sampling Event Date: September 12-14, 2021 Review Date: December 29, 2021 Report #: CE15371. CE15372, CE18614 GCtLDER MEMBER OF WSF^ Initials: NTT_ Review: XK 1"10- a I Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain -of -custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: Region III Modifications to Functional Guidelines for Organic Data Review Multi -Media, Multi -Concentration, September 1994; Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998, COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility/C & D List x NC Appendix I NC Appendix l + Detects NC Appendix II NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW NTT COC was properly signed by all parties. NTT Correct project name and number are on the form. Y Incorrected project number on COC. Should be 19131339.104 NTT Sample receipt condition at laboratory was acceptable. NTT Each sample and blanK submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES NTT Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 4 111 GOLDER MEM13ER OF WSP Review Criteria Method Anal tes HoldingTime SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080r 8081, 8082, and 6151 _ SW-846 Methods 6000 and 7000 Series SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis 6 months (no temperature requirements) Metals except mercury SW-846 Method 7470 Mercur 28 days SIN-845 Method 376.1 Sulfide 7 days 14 da s _ SW-846 Method 9010 Cyanide 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 1 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW NTT Laboratory analyzed at least one internal blank for each method, where applicable. NTT Laboratory Blank is interference -free. NTT Surrogate recoveries are provided for each analytical method, where applicable. NTT Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). NTT MSIMSD/LCS data results are provided for each analytical method. NTT MSIMSDILCS recoveries for each method are within the acceptable limits (i,e., at least 1 of the 3 were within range). (CE15371) The 8260D LCS exhibited a high bias for lsobutyl alcohol; however, this analyte was not detected in the associated samples. (CE15371) The 8151A Continuing Calibration Verification (CCV) exhibited a high bias for 2,4-D and pentachlorophenol; however, these analytes were not detected in the associated samples. (CE15371) The precision between duplicate spikes of Arsenic, Barium, Beryllium, Cadmium, Chromium, Cobalt, Copper, Lead, Nickel, Selenium, Silver, Tin, Vanadium, and Zinc exceeded acceptance criteria. The QC batches were approved based on acceptable LCS recovery of these elements. (CE15371) The spike recovery for Cyanide was outside control limits for the MS and MSD samples. The QC batch was approved based on acceptable LCS recovery of this analyte. (CE18614) The spike recoveries for Antimony and Silver were outside control limits for the Post Digestion spike samples. The QC batches were approved based on acceptable LCS recovery of these elements. (CE15372) The 8260D LCS exhibited a low bias for Methylene chloride; however this analyte was detected in the CRL standard, verifying instrument sensitivity. The Continuing Calibration Verification (CCV) exhibited a high bias for 1,1,1-Trichloroethane, 1,1- Dichloroethene, and Benzene; however, these analytes were not detected in the associated samples. The spike recovery for Trichloroethene was outside control limits for the MS sample, the precision between duplicate spikes of Toluene exceeded acceptance criteria. The OC batches were approved based on acceptable LCS recovery of these analytes. GOLDER ASSOCIATES NC, INC. G O ILD E R QUALITY ASSURANCE & QUALITY CONTROL MEMBER OF W5R LABORATORY DATA REVIEW Page 3 of 4 4.0 ANALYTE LISTSIMETHODS NTT The proper number of constituents are present for each analyte list as identified above (including detects where applicable), NTT Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING NTT All analytical reporting associated with the event was performed by the contracted lab NTT Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been 'flagged' with a 'B' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 1 pX 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. �'- Acetone @ 26 uglL - Field Blank D Copper @ 2.62 ugrL (J) -- Field Blank • Add B Flags for Copper SWA, SW-4 NTT It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. :• Antimony and Thallium: SW-3 and 5W-5 (2x) NTT The report provides the reporting limit for each constituent. NTT The results were reported at or below their proper reporting limits (e.g_, MDLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. NTT No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Interim Maximum Allowable Concentrations (IMACs) in wells or field/equipment/trip blanks or above applicable Surface Water Standards for surface water points. NTT No quantifiable inorganic or organic constituents were detected in a well or surface water point at concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). NTT Other report issues/Communications with laboratoryletc.: r (CE18614)The 8260D Continuing Calibration Verification (CCV) exhibited a high bias for 1,1,1-Trichloroethene, 1,2,3-Trichloropropane, 1,2-Dibromo-3- chloropropane, 2-Butanone, 2-Hexanone, 4-Methyl-2-pentanone, Acetone, Acrylonitrile, Bromodichloromethane, and trans-1,4-Dichloro-2-butene; however, these analytes were not detected in the associated samples GOLDER ASSOCIATES NC, INC. G O L D E R QUALITY ASSURANCE & QUALITY CONTROL MFMSEROFWSP LABORATORY DATA REVIEW Page 4 of 4 GOLDER MEMBER OF WSP golder.com