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Home My WebLink About4103_Guilford_WhiteStreet_Phase1_April20GW_FID1427171_20200722I 6NR USE ONLYY Report ❑Paper []Electronic D_a_ta - EmM Ct7 (data_ lo_aed; Yes _dI No) D4GEvent #: _ ff 'NC DENREnvironmental Monitoring Division of Waste Management - Solid Waste Reporting Form Notice: This form and any Information attached to It are "Public Records" as defined in NO General Statute 132-1. As such, these documents are available for inspection and examination by any person upon request (NG 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 NO 2L groundwater standards or NC 213 surface water standards. The notification must include a preliminary analysis of the cause and significance of each value- (e.g- naturally occurring, off -site source, pre-existing condition, etc.). • Attach a notification table of any groundwater or surface water values that equal or exceed the reporting limits, • Attach a notification table of any methane gas values that attain or exceed explosive gas levels. This includes any structures on or nearby the facility (NCAC 13B .1629 (4)(a)(1). Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCCENR-DWM, Solid Waste Section, 1646 Mail Service Center, Raleigh, NC 27699.1646. Solid Waste Monitoring Data Submittal Information Name of entity submitting data (laboratory, consultant, faculty owner): Golder Associates NC, Inc. on behalf of City of Greensboro Field Operations Department Contact for questions about data iormattlng. Include data preparer's name, telephone number and E-mail address: Name: David Y. Reedy It. PG Phone; (336) 852-4903 E-mail: dreedyagolder.com NC Landfill Rule: Actual sampling dates (e.g., Facility name; Facility Address: Facility Permit # (.0500 or .1600) October 20-24, 2006) While Street Landfill - Phase 1 2503 White St, Greensboro, NC 27405 41.03 .1600 April 20 - 22, 2020 Environmental Status: (Check all that apply) ❑ initiallBackground Monitoring 0 Detection Monitoring ❑ Assessment Monitoring Corrective Action of data submitted: (Check all that apply) Groundwater monitoring data from monitoring wells (] Groundwater monitoring dale from private water supply wells Leachate monitoring data ❑ Surface water monitoring data Methane gas monitoring data Correclive 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. NO 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 pest 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 eoneentrations 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 Ma;v� Title :2- -A�?-;?G2G Signature Date Golder Associates NC, Inc., 5B Oak Branch Drive, Greensboro, NC 27407 Facility Representative Address C-2862 NO PE Firm License Number (If applicable effective May 1, 2009) Revised 612009 (336) 852-4903 (Area Code) Telephone Number Affix NC LlcensedJ Professional Geologist Seal 4 GOLDER REPORT First Semi -Annual 2020 Water Quality Monitoring Report White Street Landfill - Phase 1, Permit No. 41-03 Submitted to: City of Greensboro Field Operations Department 401 Patton Avenue Greensboro, North Carolina 27406 Submitted by: Golder Associates NC, Inc. 5B Oak Branch Drive, Greensboro, North Carolina, USA 27407 +1 336 852-4903 19131339.101 July 22, 2020 July 22, 2020 19131339.101 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 Lewis Walker, Landfill Compliance Supervisor, Field Operations, City of Greensboro, 2503 White Street, Greensboro, NC 27405. 336-254-8096. Lewis.Walker@greensboro-nc.gov Jackie Drummond, Department of Environmental Quality, Division of Waste Management - Solid Waste Section, 2090 US Highway 70, Swannanoa, NC 28778. 828-296-4706. jaclynne.drummond@ncdenr.gov GOLDER July 22, 2020 19131339.101 Executive Summary On behalf of the City of Greensboro, Golder Associates NC, Inc. (Golder) is submitting the enclosed Water Quality Monitoring Report, which documents the results of the April 20 - 22, 2020, semi-annual compliance monitoring event for Phase I at the White Street Landfill. No Resource Conservation and Recovery Act (RCRA) metals were detected at quantifiable concentrations above their respective groundwater standards during the April 2020 event. During this event, one Appendix I volatile organic constituent (VOC), benzene, was detected at a quantifiable concentration above NC 2L Standard in the sample from downgradient well 1-1. The constituent 1,4-dioxane was also detected at downgradient wells 1-1, 1-2, 1-3, and 1-4 at concentrations above the PQL and NC 2L Standard as it has been previously; however, this parameter is not required by regulation or permit. In general, detected constituents and concentrations are consistent with historical data. No NC Appendix I constituents were reported above their respective practical quantitation limit (PQLs) and applicable surface water standards during the April 2020 event. Copper was reported at estimated concentrations below the PQL but above the acute and chronic surface water standard in the samples from upstream monitoring points SW-1 and SW-3, and from downstream monitoring points SW-4 and SW-5. Nickel was reported at an estimated concentration below the PQL but above the chronic surface water standard in the sample from upstream monitoring point SW-1. Because the concentrations are estimated below the PQL and concentrations are similar between upstream and downstream monitoring points, the exceedances do not appear to be related to landfill activities and no further action is warranted. Based on these results, the City of Greensboro will continue groundwater monitoring in accordance with the requirements outlined in NCSWMR 0.600 Rules. The next semi-annual monitoring event is tentatively scheduled for September 2020. GOLDER July 22, 2020 Table of Contents 101P-1[cit101 11156 1.0 INTRODUCTION.............................................................................................................................................1 1.1 Site Description and Background.........................................................................................................1 1.2 Compliance Monitoring History............................................................................................................1 1.3 Hydrogeologic Setting..........................................................................................................................2 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION.............................................................3 2.1 Visual Inspection Program...................................................................................................................3 2.2 Well Network and Groundwater Elevation Measurements..................................................................3 2.3 April 2020 Monitoring Event.................................................................................................................3 2.4 Laboratory Analysis Program...............................................................................................................4 3.0 LABORATORY AND FIELD QA/QC..............................................................................................................4 4.0 DATA EVALUATION......................................................................................................................................4 4.1 North Carolina Groundwater and Surface Water Quality Standard Comparisons...............................4 5.0 CONCLUSIONS..............................................................................................................................................5 6.0 REFERENCES................................................................................................................................................5 TABLES Table 1 Summary of Historical Groundwater Elevation Data Table 2 Summary of Estimated Horizontal Flow Velocities Table 3 Summary of Well Construction Information Table 4 Summary of Groundwater Monitoring Results, Detected Constituents Table 5 Summary of Groundwater Field Parameters Table 6 Summary of Surface Water Monitoring Results, Detected Constituents Table 7 Summary of Surface Water Field Parameters FIGURES Figure 1 Groundwater Surface Contour Map, April 20 — 22, 2020 Figure 2 Surface Water Location Map GOLDER July 22, 2020 APPENDICES Appendix A Groundwater and Surface Water Sampling Logs 19131339.101 Appendix B April 2020 Groundwater Certificates -of -Analysis, Chain -of -Custody Forms and Laboratory Data Reviews 4 GOLDER July 22, 2020 19131339.101 1.0 INTRODUCTION This report summarizes the monitoring results from the April 20 - 22, 2020, groundwater and surface water sampling at Phase I of the White Street Landfill in Greensboro, North Carolina (NC). The closed municipal solid waste (MSW) landfill is voluntarily monitored in accordance with Title 15A of the North Carolina Administrative Code (NCAC) Subchapter 13B. Section 0.600. The facility is located in central Guilford County and is comprised of a closed, unlined MSW facility (Phase 1), an active unlined construction and demolition debris (C&D) over MSW facility (Phase 11), an active Subtitle D MSW facility (Phase 111), and an active Type I compost facility. Phase 11 is currently in Assessment Monitoring and Corrective Action for several detected volatile organic constituents (VOCs) that exceed their respective groundwater standards. Phase III is in Detection Monitoring. The facility is owned and operated by the City of Greensboro under Permit Nos. 41-03 and 41-12 issued by the NC Department of Environmental Quality (DEQ, formerly NC Department of Environment and Natural Resources). The northeastern portion of the landfill property is comprised of the Phase I and Phase II landfills, which are covered under Permit No. 41-03. The southwestern portion of the facility is comprised of the Phase III, which is covered under permit No. 41-12. The water quality monitoring results for the Phase II and Phase III facilities are submitted under separate cover. 1.1 Site Description and Background The location of the facility is shown on the inlay on Figure 1. The White Street Landfill is located approximately 5 miles northeast of downtown Greensboro, NC in Guilford County. Access to the site is from Cone Boulevard, which turns into Ralph Johnson Way and ends at White Street with the landfill entrance to the East of this intersection. Part of the James River watershed, North Buffalo Creek flows from southwest to northeast along the northwestern border of the facility and then flows eastward, away from the facility near the northeastern end of the facility. The location of this surface water feature and its associated tributaries are shown on the inlay on Figure 1. Based on the topography as shown on Figure 1, topographic surface elevations at the facility range from approximately 700 feet above mean sea level (AMSL) to nearly 850 feet AMSL. The site is surrounded by wooded and agricultural properties to the northwest, residential properties to the south and southwest, and residential and wooded properties to the east. 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-113 is an upgradient background well for both the Phase I and the Phase II landfills. Monitoring wells 1-1, 1-2, 1-3, and 1-4 are downgradient compliance wells for the Phase I landfill. The monitoring well locations are shown on Figure 1. Phase I groundwater samples are analyzed for NC Appendix I VOCs and the eight Resource Conservation and Recovery Act (RCRA) metals semi-annually. The facility's monitoring network also includes five surface water monitoring points, which are shared with the Phase II landfill. Surface water monitoring points SW-1, SW-2, and SW-3 are upstream monitoring locations and SW-4 and SW-5 are downstream monitoring locations. Surface water point SW-1 is located along North Buffalo Creek, west of the facility, along Summit Avenue. Surface water point SW-2 is located west of the facility and GOLDER July 22, 2020 19131339.101 collected from a tributary to North Buffalo Creek that flows from south to north. Surface water point SW-3 is located west of the facility, downstream of SW-1 and upstream of the confluence of North Buffalo Creek and the tributary from which SW-2 is sampled. Surface water point SW-4 is located downstream of the facility along North Buffalo Creek. Surface water point SW-5 is located within the facility's property, at the northern end of the Phase II landfill off Rankin Mill Road. The locations of the surface water points are shown on Figure 2. Points SW-1, SW-2, SW-3, and SW-4 are also shared with the Phase III landfill's monitoring network. Surface water samples are analyzed for NC Appendix I list of constituents semi-annually. 1.3 Hydrogeologic Setting The White Street Landfill is located within the Carolina Slate Belt of the Piedmont Physiographic Province of NC (NCGS, 1985). Generally, the Carolina Slate Belt consists of Late Proterozoic to Cambrian volcanic and greenschist-facies, metasedimentary rocks intruded by plutonic suites (Butler and Secor, 1991). The site geology is characterized by a regional -scale felsic intrusive complex, which consists mainly of white to gray, fine- to coarse -grained, massive to foliated metamorphosed granitic rock and is also characterized by regional and small-scale Mesozoic diabase dikes. The uppermost groundwater beneath the facility is present in a shallow, unconfined aquifer comprised of saprolite and partially weathered rock (PWR). Groundwater occurs in undeveloped areas at depths of approximately 1 to 20 feet below ground surface. Depth to water measurements, obtained on October 7, 2019, are summarized in Table 1 and were used to prepare a groundwater surface contour map presented on Figure 1. As presented, the groundwater flow in the uppermost aquifer beneath the site is generally to the northwest toward North Buffalo Creek, which is located along the northwestern property boundary of the site. The groundwater surface contour map and interpreted flow directions are generally consistent with previously submitted groundwater contour maps and flow directions for this facility. Based on the April 2020 groundwater surface contour map, the hydraulic gradient in the shallow aquifer underlying the site, as measured along the conceptual flow paths shown on the contour map, was calculated to average 0.017 feet/foot. Groundwater velocities were calculated using a hydraulic conductivity of 2.61 X 10-4 centimeters per second (cm/s), which is the average of the hydraulic conductivities calculated for the hydrogeologic units present at the facility's Phase II and Phase III landfills. This average is based on slug test data by BPA Environmental & Engineering Inc. (Phase II) and G.N. Richardson & Associates (Phase III). Although no data is available for the Phase I landfill, it is assumed that the whole facility either share hydrogeologic units or have similar characteristics (S&ME, 2017). The estimated effective porosity of the shallow aquifer is expected to range from 0.20 (saprolite) to 0.09 (fractured rock). The effective porosity of saprolite was used in calculations to provide a conservative estimate of groundwater flow. Using the above values, the estimated rate of groundwater flow for the uppermost aquifer beneath the facility was calculated using the following modified Darcy equation: Vgw = KI/ne where Vgw = average linear velocity (feet/year), K = hydraulic conductivity (feet/year), i = horizontal hydraulic gradient, and ne = effective porosity. The average estimated linear groundwater flow velocity under the waste management unit is approximately 234 feet/year toward the northwest, which is generally consistent with previous estimates (Table 2). The linear 4 GOLDER July 22, 2020 19131339.101 velocity equation above makes the simplified assumptions of a homogeneous and isotropic aquifer. Therefore, this equation represents a likely average value for the uppermost aquifer and does not account for heterogeneous and/or anisotropic conditions that may be present in the uppermost aquifer at the facility. 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION Field activities conducted as part of the April 2020 sampling event are discussed in the following sections. 2.1 Visual Inspection Program To detect a potential release at the earliest possible time, the visual inspection program is used at the Phase I landfill by the sampling personnel. This program includes physical indicators such as potential water table mounding beneath the waste management unit, physical examination of any stresses in biological communities, visible signs of leachate migration (i.e., leachate seeps), unexplained changes in soil characteristics, and any other change to the environment due to the waste management unit. During the April 2020 compliance monitoring event, no physical indicators of a potential release were observed in the vicinity of the waste management areas by the sampling personnel. 2.2 Well Network and Groundwater Elevation Measurements The current network of groundwater monitoring wells at the Phase I landfill consist of one upgradient well (MW-13) and four downgradient wells (1-1, 1-2, 1-3, and 1-4). Available monitoring well construction information for the Phase I monitoring wells is summarized on Table 3, and the well locations are shown on Figure 1. The well locations were selected to yield groundwater samples representative of the conditions in the uppermost aquifer underlying the facility, and to monitor for potential releases from the landfill unit. Three upstream surface water monitoring points (SW-1, SW-2, and SW-3) and two downstream surface water monitoring points (SW-4 and SW-5) are also monitored. Depth -to -water measurements are recorded to the nearest 0.01 foot prior to initiating groundwater purging and sampling activities. The respective groundwater level elevations for this event are presented in Table 1. The historical water level data are also shown on this table. As presented, recent groundwater elevation data for the monitoring well network indicate that the hydraulic head level in the uppermost aquifer beneath the facility is fairly consistent, with temporal variation from the long-term average limited to approximately 5 - 20 feet (plus or minus) under normal conditions. 2.3 April 2020 Monitoring Event Personnel from Golder visited the facility from April 20 - 22, 2020, to purge and sample monitoring wells and to sample surface water monitoring points. Monitoring wells were purged and sampled using the dedicated pumps at the facility following low -flow micropurge procedures. Measurements of temperature, pH, specific conductivity, turbidity, dissolved oxygen, and oxidation reduction potential were recorded on approximately 5-minute intervals, depending on the purge rate. In general, the purge rate for each well was matched to the yield of the monitoring well, as determined by continuously monitoring the depth to the water, up to a maximum purge rate of 200 milliliters per minute. Purging was continued until stabilization was indicated by the water quality parameters. Prior to sampling, the laboratory -supplied sample containers were prepared. Each sample container was labeled with the sample identification number, sampling personnel, date and time of sample collection, project name and number, and requested chemical analyses. GOLDER July 22, 2020 19131339.101 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 April 2020 groundwater, surface water, and leachate samples were submitted to Environmental Conservation Laboratories, Inc. (ENCO) of Cary, NC under chain -of -custody control for analysis. Groundwater samples were analyzed for NC Appendix I VOCs and RCRA metals. The Phase I and Phase II landfills share background monitoring well MW-13 and therefore, MW-13 was analyzed for Appendix I inorganic and VOCs plus mercury. Surface water samples were analyzed for NC Appendix I constituents. Surface water and groundwater samples were also analyzed for 1,4-dioxane per the May 29, 2018, memorandum from the NC Department of Environmental Quality (DEQ). The samples were received at the laboratory in good condition and were properly preserved. 3.0 LABORATORY AND FIELD QA/QC A laboratory -prepared trip blank accompanied the volatile sample containers to and from the laboratory. ENCO analyzed the trip blank for NC Appendix I VOCs. Reviews of the laboratory data were performed by Golder personnel and are included in Appendix B. There were no detections of RCRA metals or NC Appendix I constituents in the laboratory method blanks and therefore no data qualification was required. 4.0 DATA EVALUATION The results of the data evaluations are presented in the following sections. 4.1 North Carolina Groundwater and Surface Water Quality Standard Comparisons As presented in Table 4, benzene was the only NC Appendix I VOC detected at a concentration above the practical quantitation limit (PQL) and NC 2L Standard in the sample from downgradient monitoring well 1-1 as it has been previously. No other RCRA metals were detected above their PQLs and groundwater standards during the April 2020 event. The constituent 1,4-dioxane was detected at concentrations above the PQL and NC 2L Standard at downgradient wells 1-1, 1-2, 1-3, and 1-4 as it has been previously; however, this parameter is not required by regulation or permit. GOLDER July 22, 2020 19131339.101 As shown in Table 6, no NC Appendix I constituents were reported above their respective PQLs and applicable surface water standards during the April 2020 event. 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 September 2020. 6.0 REFERENCES Butler, J. Robert and Secor, Donald T., Jr., 1991, The Central Piedmont, in Horton, J. W., Jr., and Zullo,V.A., eds., The Geology of the Carolinas: The University of Tennessee Press, p. 59 78. NCGS (North Carolina Geologic Survey), 1985, Geologic Map of North Carolina. S&ME, Greensboro, NC, January 2017, White Street Landfill — Phase I, Permit No. 41-03, Post -Closure Monitoring, September 2016. 4 GOLDER 5 July 22, 2020 19131339.101 Signature Page Golder Associates INC, Inc. David "Dusty" Y. Reedy II, PG Senior Hydrogeologist -Pccc-� x&c� Rachel P. Kirkman, PG Associate and Senior Consultant Engineering Lic, No. C-2862/Geology Lic. No. C-399 Golder Associates I G, Inc. is a licensed user of the Golder trademark, and an associated operating entity. Golder and the G logo are trademarks of Golder Associates Corporation. htlps�7lgoltlerassaclalas,aharepomtcomlsitasl116193120xxxxxlphasa 101 • 191 sa wgrn 202OV200 • deliverablas1252 • 1inaUphase J19131339.10i-001-r-r9v0-ph a5e_i.docx Tables July 2020 19131339.101 TABLE 1 Summary of Historical Groundwater Elevation Data White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Well IDs 1-1 1-2 1-3 1-4 MW-13 TOC Elevation 713.75 703.09 707.43 694.94 741.24 (ft AMSL) Date Elev DTW Elev DTW Elev DTW Elev DTW Elev DTW 10/14/98 765.90 10.21 763.28 5.30 750.43 14.22 753.76 6.07 718.61 22.69 03/25/99 759.43 16.68 748.54 20.04 749.06 15.59 750.97 8.86 722.11 19.19 09/22/99 767.74 8.37 752.25 16.33 752.13 12.52 757.61 2.22 721.32 19.98 03/27/00 769.13 6.98 764.37 4.21 752.90 11.75 757.61 2.22 722.49 18.81 09/13/00 767.81 8.30 763.98 4.60 752.22 12.43 757.53 2.30 722.37 18.93 03/12/01 768.57 7.54 763.87 4.71 752.61 12.04 757.61 2.22 721.80 19.50 09/13/01 766.28 9.83 763.65 4.93 751.12 13.53 755.74 4.09 720.98 20.32 03/07/02 767.92 8.19 763.73 4.85 752.40 12.25 757.66 2.17 719.08 22.22 09/18/02 766.67 9.44 763.54 5.04 751.49 13.16 757.69 2.14 722.10 19.20 04/15/03 769.48 6.63 764.20 4.38 753.62 11.03 757.97 1.86 724.59 16.71 10/15/03 767.97 8.14 764.12 4.46 752.22 12.43 757.89 1.94 722.82 18.48 03/24/04 768.55 7.56 763.94 4.64 752.10 12.55 757.70 2.13 722.42 18.88 09/22/14 767.47 8.64 763.80 4.78 751.90 12.75 757.84 1.99 722.56 18.74 05/10/05 766.30 9.81 763.73 4.85 754.89 9.76 757.60 2.23 722.14 19.16 10/11 /05 765.57 10.54 763.53 5.05 750.66 13.99 754.33 5.50 719.72 21.58 04/24/06 767.17 8.94 763.92 4.66 751.62 13.03 757.34 2.49 720.25 21.05 10/20/06 766.28 9.83 763.42 5.16 750.83 13.82 756.23 3.60 721.69 19.61 04/10/07 705.35 8.40 698.20 4.89 694.67 12.76 692.55 2.39 721.61 19.63 09/25/07 702.67 11.08 696.89 6.20 691.35 16.08 686.94 8.00 717.41 23.83 05/02/08 707.14 6.61 698.49 4.60 695.80 11.63 692.74 2.20 722.96 18.28 12/05/08 704.22 9.53 698.08 5.01 693.82 13.61 692.36 2.58 -- -- 04/16/09 707.47 6.28 698.43 4.66 695.67 11.76 693.33 1.61 722.87 18.37 10/07/09 703.57 10.18 697.81 5.28 692.93 14.50 689.81 5.13 721.70 19.54 04/28/10 705.36 8.39 698.32 4.77 694.41 13.02 692.80 2.14 -- -- 10/05/10 705.09 8.66 697.84 5.25 693.48 13.95 692.31 2.63 721.13 20.11 05/10/11 706.23 7.52 697.43 5.66 695.15 12.28 693.03 1.91 722.33 18.91 10/06/11 703.25 10.50 697.68 5.41 693.29 14.14 691.55 3.39 719.26 21.98 04/16/12 704.67 9.08 698.39 4.70 694.54 12.89 693.08 1.86 721.34 19.90 10/24/12 703.55 10.20 697.84 5.25 693.11 14.32 692.19 2.75 719.13 22.11 04/24/13 706.10 7.65 698.28 4.81 694.43 13.00 692.94 2.00 721.96 19.28 09/09/13 705.21 8.54 697.94 5.15 693.29 14.14 691.85 3.09 721.66 19.58 04/22/14 707.24 6.51 698.81 4.28 695.49 11.94 693.22 1.72 723.00 18.24 10/01/14 701.58 12.17 696.98 6.11 690.96 16.47 687.74 7.20 717.90 23.34 04/07/15 705.92 7.83 698.06 5.03 694.42 13.01 692.93 2.01 720.64 20.60 10/06/15 705.30 8.45 697.88 5.21 693.42 14.01 692.37 2.57 723.23 18.01 04/18/16 706.34 7.41 698.54 4.55 694.36 13.07 692.79 2.15 721.94 19.30 09/26/16 702.87 10.88 697.68 5.41 691.94 15.49 689.87 5.07 721.03 20.21 04/25/17 707.28 6.47 698.95 4.14 696.82 10.61 693.62 1.32 722.07 19.17 10/16/17 704.53 9.22 697.64 5.45 692.16 15.27 690.25 4.69 720.11 21.13 04/16/18 707.47 6.28 698.88 4.21 695.81 11.62 693.48 1.46 722.80 18.44 10/16/18 704.43 9.32 695.58 7.51 695.64 11.79 692.40 2.54 723.22 18.02 04/08/19 705.26 8.49 696.24 6.85 695.31 12.12 692.07 2.87 723.66 17.58 10/07/19 701.29 12.46 694.92 8.17 691.89 15.54 689.95 4.99 720.82 20.42 04/20/20 704.35 9.40 696.55 6.54 694.90 12.53 692.04 2.90 722.86 18.38 MEAN 728.91 8.94 722.64 5.75 716.39 13.15 716.89 3.12 721.52 19.75 MAXIMUM 769.48 16.68 764.37 20.04 754.89 16.47 757.97 8.86 724.59 23.83 MINIMUM 701.29 6.28 694.92 4.14 690.96 9.76 686.94 1.32 717.41 16.71 Notes: 1. ft AMSL = feet above mean sea level. 2. -- = not measured or no data 3. TOC = top of casing 4. NI = not installed 5. MW = monitoring well 6. TOC and Water Elevation Data for dates prior to April 2017 from historical S&ME, Inc. Ground and Surface 7. Well TOC survey conducted 2013-2014 by S&ME, Inc. for more accurate elevations. .,> GOLDER 10f1 July 2020 TABLE 2 Summary of Estimated Horizontal Flow Velocities White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.101 April 2020 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 1698 --------- 690------- 0.0177 0.02 2.61 E-04 239 iZ North -Northwest 1762 --------690-------- 0.0170 0.02 2.61E-04 230 Average i Average VFW 0.0173 234 Notes: 1. Horizontal velocities based on the modified Darcy equation VgW = Ki/ne. 2. Values for K were based on the geometric mean of slug test values from all site monitoring wells 3. The effective porosity for saprolite was used in velocity calculations. 4. cm/sec = centimeters per second ,>GOLDER 1 of 1 July 2020 TABLE 3 Summary of Well Construction Information White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 19131339.101 Top -of - Monitoring Well Casing Well Well Screened Interval Geology of Screened Well Identification Northing Easting Date of Construction Elevation Depth Diameter (ft bgs) Interval Status (feet) (inches) (ft AMSL) 1-1 859779.0057 1785681.4037 07/14/89 713.75 24 2 14 24 PWR Active 1-2 860676.2436 1785350.8942 07/14/89 703.09 24 2 14 24 Sandy Silt Active 1-3 861283.9207 1785321.4743 07/14/89 707.43 24 2 14 24 Sandy Silt Active 1-4 861952.8335 1786141.9027 07/14/89 694.94 15 2 5 15 Sandy Silt Active MW-13 858763.9106 1783188.5206 07/14/89 741.24 34 2 19 34 Sandy Silt Active Notes: 1. ft AMSL= feet above mean sea level 2. ft bgs = feet below ground surface 3. MW = monitoring well 4. PWR = partially weathered rock 5. Unless otherwise noted, well construction survey information, Water Quality Monitoring Reports and Water Quality Monitoring Plans provided by Survey Solutions S&ME. ;,> GOLDER 1of1 July 2020 19131339.101 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 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 10.0 -- ND ND ND ND ND ND ug/L 04/08/19 7.60 10.0 -- ND ND ND ND ND ND ug/L 10/09/19 7.60 10.0 -- ND ND ND ND ND ND ug/L 04/20/20 7.60 10.0 -- 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 10.0 -- 94.5 660 499 136 546 ND ug/L 04/08/19 1.1 10.0 -- 95.9 724 233 71 599 ND ug/L 10/09/19 1.1 10.0 -- 89.0 648 444 135 795 ND ug/L 04/20/20 1.1 10.0 -- 98.9 652 236 69.5 672 ND 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 ,> GOLDER 1of8 July 2020 19131339.101 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 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 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 10.0 -- ND 2.48 J 5.02 J 5.34 J 2.87 J ND ug/L 04/08/19 1.4 10.0 -- ND 2.40 J 6.88 J 3.39 J 1.94 J ND ug/L 10/09/19 1.4 10.0 -- ND 1.83 J ND 3.98 J ND ND ug/L 04/20/20 1.4 10.0 -- ND 1.70 J ND 1.66 J 1.49 J ND Lead ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND NC 2L = 15 ug/L ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND EPA MCL = 15 ug/L ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND 26 ND 16 ND ug/L 03/01/04 -- -- 10 ND ND ND ND ND ND ug/L 09/01/04 -- -- 10 ND ND 62 ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01/06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND 11.7 ND ug/L 04/10/07 -- -- -- 2.0 2.0 6.7 J 2.0 2.9 ND ug/L 09/25/07 -- -- -- 2.0 ND 3.6 J ND ND ND ug/L 05/02/08 2.0 -- 10 ND ND 5.6 J ND 17.6 ND ug/L 12/05/08 1.9 -- 10 ND ND ND ND ND ND ug/L 04/16/09 1.6 -- 10 -- 4.1 J 12.4 3.7 J 19 ND ug/L 10/07/09 1.9 -- 10 ND ND 3.31 J 2.44 J 14 ND ug/L 04/28/10 1.9 -- 10 ND ND ND ND 7.98 J ND ug/L 10/11/10 1.9 -- 10 ND ND 2.01 J ND 16.4 ND ug/L 05/10/11 1.9 -- 10 ND ND 11.3 2.85 J 34.3 ND ug/L 10/06/11 1.9 -- 10 ND ND ND ND 8.6 J ND ug/L 04/16/12 1.9 -- 10 ND 1.9 3.15 J 1.9 15.8 ND ug/L 10/24/12 1.9 -- 10 ND 2.3 J 11.2 2.79 J 18.7 ND ug/L 04/24/13 1.9 -- 10 ND ND ND ND 9.79 J ND ug/L 09/10/13 2.1 -- 10 ND ND ND ND 4.72 J ND ug/L 04/22/14 2.1 -- 10 ND 3.12 J 4.62 J ND 8.23 J ND ug/L 10/06/14 2.1 -- 10 ND ND ND ND ND ND ug/L 04/07/15 3.1 -- 10 ND ND ND ND ND ND ug/L 10/07/15 3.1 -- 10 ND 3.7 J 4.3 J ND 3.7 J ND ug/L 04/26/16 3.1 -- 10 ND ND ND ND ND ND ug/L 09/28/16 3.1 -- 10 ND ND 4.94 J ND 3.56 J ND ug/L 04/27/17 3.1 -- 10 ND ND ND ND ND ND ug/L 10/17/17 3.1 -- 10 ND ND ND ND ND ND ug/L 04/16/18 3.1 -- 10 ND ND ND ND ND ND ug/L 10/18/18 3.1 10.0 -- ND ND ND ND ND ND ug/L 04/08/19 3.1 10.0 -- ND ND ND ND ND ND ug/L 10/09/19 3.1 10.0 -- ND ND ND 3.28 J ND ND ug/L 04/20/20 3.1 10.0 -- ND 3.62 J ND ND ND ND Mercury ug/L 03/01/00 -- -- 0.5 ND ND ND ND ND ND NC 2L = 1 ug/L ug/L 09/01/00 -- -- 0.5 ND ND ND ND ND ND EPA MCL = 2 ug/L ug/L 03/01/01 -- -- 0.5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 0.5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 0.5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 0.5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 0.5 ND 2.4 ND ND ND ND ug/L 10/01/03 -- -- 0.5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 0.5 ND 2.4 ND ND ND ND ug/L 09/01/04 -- -- 0.5 ND 0.9 ND ND ND ND ug/L 05/01/05 -- -- 0.5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 0.5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 0.5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 0.5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- -- 0.14 J ND ND ND ND ug/L 09/25/07 -- -- -- 0.11 3.96 ND ND ND ND ug/L 05/02/08 0.11 -- 0.2 ND 0.45 ND ND ND ND ug/L 12/05/08 0.11 -- 0.2 ND ND ND ND ND ND ug/L 04/16/09 0.11 -- 0.2 -- 0.34 ND ND ND ND ug/L 10/07/09 0.054 -- 0.2 ND 0.0867 J ND ND 0.0638 J ND ug/L 04/28/10 0.17 -- 0.2 ND ND ND ND ND ND ug/L 10/11/10 0.17 -- 0.2 ND ND ND ND ND ND ug/L 05/10/11 0.17 -- 0.2 ND ND ND ND ND ND ug/L 10/06/11 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/16/12 0.17 -- 0.2 ND 0.237 ND ND ND ND ug/L 10/24/12 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/24/13 0.17 -- 0.2 ND ND ND ND ND ND ug/L 09/10/13 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/22/14 0.17 -- 0.2 ND ND ND ND ND ND ug/L 10/06/14 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/07/15 0.17 -- 0.2 ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/26/16 0.17 -- 0.2 ND ND ND ND ND ND ug/L 09/28/16 0.17 -- 0.2 ND ND ND ND ND ND ug/L 04/27/17 0.17 -- 0.2 ND 0.174 J ND ND ND ND ug/L 10/17/17 0.17 -- 0.2 ND 0.667 ND ND ND ND ug/L 04/16/18 0.17 -- 0.2 ND 0.283 ND ND ND ND ug/L 10/18/18 0.15 0.200 -- ND ND ND ND ND ND ug/L 04/08/19 0.15 0.200 -- ND ND ND ND ND ND ug/L 10/09/19 0.15 0.200 -- ND ND ND ND ND ND ug/L 04/20/20 0.15 0.200 -- ND ND ND ND ND ND ,> GOLDER 2of8 July 2020 19131339.101 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 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 10.0 -- ND ND ND ND ND ND ug/L 04/08/19 6.2 10.0 -- ND ND ND ND ND ND ug/L 10/09/19 6.2 10.0 -- ND ND ND ND ND ND ug/L 04/20/20 6.2 10.0 -- 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 10.0 -- ND ND ND ND ND ND ug/L 04/08/19 1.9 10.0 -- ND ND ND ND ND ND ug/L 10/09/19 1.9 10.0 -- ND ND ND ND ND ND ug/L 04/20/20 1.9 10.0 -- ND ND ND ND ND ND Zinc ug/L 04/10/07 -- -- 2.2 -- -- -- -- -- NC 2L = 1000 ug/L ug/L 09/25/07 -- -- 2.5 J -- -- -- -- -- MCL = 5000 ug/L ug/L 12/05/08 3.8 10 7.8 J -- -- -- -- -- ug/L 10/14/09 3.8 10 7.66 J -- -- -- -- -- ug/L 04/28/10 3.8 10 7.2 J -- -- -- -- -- ug/L 05/10/11 3.8 10 4.92 J -- -- -- -- -- ug/L 10/18/18 4.4 -- 6.31 J -- -- -- -- ND ug/L 04/08/19 4.4 10.0 -- 13.0 -- -- -- -- -- ug/L 10/09/19 4.4 10.0 -- 8.73 J -- -- -- -- ND ug/L 04/20/20 4.4 10.0 -- ND -- -- -- -- ND 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 J 1.4 J ND ug/L 09/25/07 -- -- -- 3.8 B 5.8 J 7.1 J 9.1 J 20 J 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 J 5.6 J 6.1 J ND ug/L 04/16/09 1.5 -- 100 -- 15 J 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 J ND ug/L 10/06/11 1.2 -- 100 ND ND ND ND 5.7 J ND ug/L 04/16/12 1.2 -- 100 ND 3.8 J ND ND ND ND ug/L 10/24/12 1.2 -- 100 ND 12 J ND ND 12 J 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 J 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 J 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 J ug/L 10/17/17 10 -- 100 ND ND ND ND ND ND ug/L 04/16/18 10 -- 100 ND ND ND ND 14 J ND ug/L 10/18/18 10 20 -- ND ND ND ND ND ND ug/L 04/08/19 10 20 -- ND ND ND ND 13 J ND ug/L 10/09/19 10 20 -- ND ND ND ND ND ND ug/L 04/20/20 10 20 -- ND ND ND ND ND ND ,> GOLDER 3of8 July 2020 19131339.101 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 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 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 J 0.5 J ND ug/L 05/02/08 0.2 -- 1 ND 1.7 ND ND 0.43 J ND ug/L 12/05/08 0.2 -- 1 ND 162 ND 0.51 J 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 J 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 J 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 J 0.15 ND ug/L 04/24/13 0.25 -- 1 ND 3.5 ND 0.34 J 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 J 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 J 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 J 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 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 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 ,411 ,* GOLDER 4of8 July 2020 19131339.101 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 Chlorobenzene ug/L 03/01/00 -- -- 5 ND ND ND ND 5.4 ND NC 2L = 50 ug/L ug/L 09/01/00 -- -- 5 ND ND ND 6.2 6.7 ND EPA MCL = 100 ug/L ug/L 03/01/01 -- -- 5 ND ND ND 6.7 8.2 ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND 7.5 ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND 6.7 ND ug/L 10/01/03 -- -- 5 ND ND ND 8.3 10 ND ug/L 03/01/04 -- -- 5 ND ND ND 7.7 9.8 ND ug/L 09/01/04 -- -- 5 ND ND ND 11 ND ND ug/L 05/01/05 -- -- 5 ND ND ND 8 9 ND ug/L 10/01/05 -- -- 5 ND ND 5 14 5 ND ug/L 04/01/06 -- -- 5 ND ND ND 9.6 9.8 ND ug/L 10/01/06 -- -- 5 ND ND 5.6 13 12 ND ug/L 04/10/07 -- -- -- 0.16 0.16 0.16 0.16 11 ND ug/L 09/25/07 -- -- -- 0.16 2.0 J 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 J 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 J 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 J 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 J 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 J 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 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 J 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 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 J 0.84 J 0.60 J ND ug/L 09/25/07 -- -- -- ND ND 1.2 J 0.79 J 0.48 J ND ug/L 05/02/08 0.27 -- 5 ND ND 1 J 0.49 J ND ND ug/L 12/05/08 0.27 -- 5 ND 0.42 ND 0.75 J ND ND ug/L 04/16/09 0.27 -- 5 -- ND 1.1 J 0.59 J 0.41 J ND ug/L 10/07/09 0.27 -- 5 ND ND 1.5 J 0.85 J ND ND ug/L 04/28/10 0.052 -- 5 ND ND 1.4 J 0.73 J ND ND ug/L 10/11/10 0.27 -- 5 ND ND 1.3 J 0.88 J 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 J 0.79 J ND ND ug/L 04/16/12 0.19 -- 5 ND ND 0.78 J 0.45 J ND ND ug/L 10/24/12 0.19 -- 5 ND ND 0.56 J 0.81 J ND ND ug/L 04/24/13 0.39 -- 5 ND ND ND 0.59 J ND ND ug/L 09/10/13 0.19 -- 5 ND ND 0.85 J 0.67 J 0.41 J ND ug/L 04/22/14 0.19 -- 5 ND ND 0.92 J 0.55 J 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 J 1.3 J 0.7 J ND ND ug/L 10/07/15 0.19 -- 5 ND ND 1.4 J 0.84 J ND ND ug/L 04/26/16 0.19 -- 5 ND ND 1.1 J 0.44 J ND ND ug/L 09/28/16 0.19 -- 5 ND ND 1.5 J 0.83 J ND ND ug/L 04/27/17 0.19 -- 5 ND ND 0.94 J 0.56 J ND ND ug/L 10/17/17 0.19 -- 5 ND ND 1.5 J 0.82 J ND ND ug/L 04/16/18 0.19 -- 5 ND ND 1.5 J ND ND ND ug/L 10/18/18 0.19 1.0 -- ND ND 1.7 ND ND ND ug/L 04/08/19 0.19 1.0 -- ND 0.43 J ND ND ND ND ug/L 10/09/19 0.19 1.0 -- ND ND 1.0 0.58 J ND ND ug/L 04/20/20 0.19 1.0 -- ND ND ND ND ND ND ,> GOLDER 5of8 July 2020 19131339.101 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 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 1,4-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 J 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 J 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 J 0.71 J 3.1 ND ug/L 10/09/19 0.19 1.0 -- ND 5.8 ND 3.1 2.3 ND ug/L 04/20/20 0.19 1.0 -- ND 5.2 0.93 J 0.54 J 3.0 ND 1, 1 -Dichloroethane ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 6 ug/L ug/L 09/01/00 -- -- 5 ND ND ND 5.8 ND ND (No EPA MCL) ug/L 03/01/01 -- -- 5 ND ND ND 5.0 ND ND ug/L 09/01/01 -- -- 5 ND ND ND 5.6 ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND 5.0 ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND 1.3 J ND 1.6 J ND ND ug/L 09/25/07 -- -- -- ND 1.7 J ND 2.9 J ND ND ug/L 05/02/08 0.33 -- 5 ND 1.3 J ND 2.0 J ND ND ug/L 12/05/08 0.33 -- 5 ND 0.54 ND 3.2 J ND ND ug/L 04/16/09 0.33 -- 5 -- 1.0 J ND 1.4 J ND ND ug/L 10/07/09 0.33 -- 5 ND 1.4 J ND 2.6 J ND ND ug/L 04/28/10 0.05 -- 5 ND 1.2 J ND 2.0 J ND ND ug/L 10/11/10 0.33 -- 5 ND 1.4 J ND 2.6 J ND ND ug/L 05/10/11 0.08 -- 5 ND 0.97 J 0.08 2.0 J ND ND ug/L 10/06/11 0.08 -- 5 ND 1.2 J ND 2.3 J ND ND ug/L 04/16/12 0.13 -- 5 ND 1.0 J ND 1.5 J ND ND ug/L 10/24/12 0.13 -- 5 ND 0.72 J ND 2.3 J ND ND ug/L 04/24/13 0.28 -- 5 ND 0.71 J ND 1.9 J ND ND ug/L 09/10/13 0.13 -- 5 ND 0.67 J 0.13 2.2 J ND ND ug/L 04/22/14 0.13 -- 5 ND 0.56 J ND 1.2 J ND ND ug/L 10/06/14 0.13 -- 5 ND 0.74 J ND 1.5 ND ND ug/L 04/07/15 0.13 -- 5 ND ND ND 1.5 J ND ND ug/L 10/07/15 0.13 -- 5 ND 1.0 J ND 3.2 J ND ND ug/L 04/26/16 0.13 -- 5 ND 0.45 J ND 2.0 J ND ND ug/L 09/28/16 0.13 -- 5 ND 0.86 J ND 2.9 J ND ND ug/L 04/27/17 0.13 -- 5 ND 0.47 J ND 1.6 J ND ND ug/L 10/17/17 0.13 -- 5 ND 0.52 J ND 2.6 J ND ND ug/L 04/16/18 0.13 -- 5 ND 0.50 J ND 1.3 J ND ND ug/L 10/18/18 0.13 1.0 -- ND 0.51 J ND 1.8 ND ND ug/L 04/08/19 0.13 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 0.13 1.0 -- ND 0.41 J ND 2.2 ND ND ug/L 04/20/20 0.13 1.0 -- ND ND ND ND ND ND 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 ,> GOLDER 6of8 July 2020 19131339.101 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Method Practical SWS Upgradient Well Downgradient Wells Detected Monitoring Reporting Sample Detection Quantitation Reporting Blanks Constituent/Parameter Units Date Limit Limit Limit MW-13 1-1 1-2 1-3 1-4 1, 1 -Dichloroethene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 7 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND EPA MCL = 7 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND 0.45 J ND ND ug/L 05/02/08 0.2 -- 5 ND ND ND ND ND ND ug/L 12/05/08 0.24 -- 5 ND 0.65 ND 0.56 J ND ND ug/L 04/16/09 0.24 -- 5 -- ND ND ND ND ND ug/L 10/07/09 0.24 -- 5 ND ND ND 0.46 J ND ND ug/L 04/28/10 0.15 -- 5 ND ND ND ND ND ND ug/L 10/11/10 0.24 -- 5 ND ND ND 0.48 J ND ND ug/L 05/10/11 0.6 -- 5 ND ND ND ND ND ND ug/L 10/06/11 0.6 -- 5 ND ND ND ND ND ND ug/L 04/16/12 0.21 -- 5 ND ND ND ND ND ND ug/L 10/24/12 0.21 -- 5 ND ND ND 0.4 J ND ND ug/L 04/24/13 0.31 -- 5 ND ND ND 0.37 J ND ND ug/L 09/10/13 0.21 -- 5 ND ND ND 0.47 J ND ND ug/L 04/22/14 0.21 -- 5 ND ND ND ND ND ND ug/L 10/06/14 0.21 -- 5 ND ND ND ND ND ND ug/L 04/07/15 0.21 -- 5 ND ND ND ND ND ND ug/L 10/07/15 0.21 -- 5 ND ND ND ND ND ND ug/L 04/26/16 0.21 -- 5 ND ND ND ND ND ND ug/L 09/28/16 0.21 -- 5 ND ND ND 0.8 J ND ND ug/L 04/27/17 0.21 -- 5 ND ND ND ND ND ND ug/L 10/17/17 0.21 -- 5 ND ND ND 0.68 J ND ND ug/L 04/16/18 0.21 -- 5 ND ND ND ND ND ND ug/L 10/18/18 0.21 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.21 1.0 -- ND ND ND ND ND ND ug/L 10/09/19 0.21 1.0 -- ND ND ND 0.64 J ND ND ug/L 04/20/20 0.21 1.0 -- ND ND ND ND ND ND cis- 1,2-Dichloroethene ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND NC 2L = 70 ug/L ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND EPA MCL = 70 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01/02 -- -- 5 ND ND ND ND ND ND ug/L 09/01/02 -- -- 5 ND ND ND ND ND ND ug/L 04/01/03 -- -- 5 ND ND ND ND ND ND ug/L 10/01/03 -- -- 5 ND ND ND ND ND ND ug/L 03/01/04 -- -- 5 ND ND ND ND ND ND ug/L 09/01/04 -- -- 5 ND ND ND ND ND ND ug/L 05/01/05 -- -- 5 ND ND ND ND ND ND ug/L 10/01/05 -- -- 5 ND ND ND ND ND ND ug/L 04/01/06 -- -- 5 ND ND ND ND ND ND ug/L 10/01/06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 0.34 J 0.69 J ND ND ug/L 09/25/07 -- -- -- ND 2.2 J 0.45 J 1.3 J 0.14 ND ug/L 05/02/08 0.30 -- 5 ND 1.3 J 0.42 J 0.77 J ND ND ug/L 12/05/08 0.36 -- 5 ND ND ND ND ND ND ug/L 04/16/09 0.36 -- 5 -- 1.2 J 0.58 J 0.67 J ND ND ug/L 10/07/09 0.36 -- 5 ND 2.4 J 0.62 J 1.4 J ND ND ug/L 04/28/10 0.075 -- 5 ND 1.9 J 0.61 J 0.87 J ND ND ug/L 10/11/10 0.36 -- 5 ND 2.2 J 0.51 J 1.1 J ND ND ug/L 05/10/11 0.72 -- 5 ND 1.1 J ND 0.89 J ND ND ug/L 10/06/11 0.72 -- 5 ND 1.5 J ND 1.1 J ND ND ug/L 04/16/12 0.15 -- 5 ND 0.86 J 0.55 J 0.63 J ND ND ug/L 10/24/12 0.15 -- 5 ND 0.62 J ND 0.8 J ND ND ug/L 04/24/13 0.27 -- 5 ND 0.73 J ND 0.85 J ND ND ug/L 09/10/13 0.15 -- 5 ND 0.98 J 0.48 J 0.87 J ND ND ug/L 04/22/14 0.15 -- 5 ND 0.52 J ND ND ND ND ug/L 10/06/14 0.15 -- 5 ND 0.61 J ND ND ND ND ug/L 04/07/15 0.15 -- 5 ND 0.44 J ND 0.52 J ND ND ug/L 10/07/15 0.15 -- 5 ND 0.94 J 0.41 J 0.87 J ND ND ug/L 04/26/16 0.15 -- 5 ND 0.51 J ND 0.43 J ND ND ug/L 09/28/16 0.15 -- 5 0.15 0.77 J ND ND ND ND ug/L 04/27/17 0.15 -- 5 ND 0.57 J ND 0.49 J ND ND ug/L 10/17/17 0.15 -- 5 ND 0.47 J ND 0.64 J ND ND ug/L 04/16/18 0.15 -- 5 ND 0.56 J ND ND ND ND ug/L 10/18/18 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.15 1.0 -- ND 0.65 J ND ND ND ND ug/L 10/09/19 0.15 1.0 -- ND 0.57 J 0.41 J 0.51 J ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ND ND ND ND 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 J 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 J 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 J 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 J 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 J 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 ,> GOLDER 7of8 July 2020 19131339.101 TABLE 4 Summary of Groundwater Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 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 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 J 0.72 J 0.54 J 0.63 J ND ND ug/L 09/25/07 -- -- -- ND 0.56 J ND 0.77 J ND ND ug/L 05/02/08 0.3 -- 1 ND 0.64 J 0.9 J 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 J 0.62 J 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 J 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 J 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 Xylenes (Total) ug/L 03/01/00 -- 5 ND ND ND ND ND -- NC 2L = 500 ug/L ug/L 09/01/00 -- 5 ND ND ND ND ND -- EPA MCL = 10000 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 -- 5 ND ND ND ND ND -- ug/L 09/25/07 -- 5 -- ND ND ND ND -- ug/L 05/02/08 0.67 5 -- ND ND ND ND -- ug/L 12/05/08 0.4 5 ND ND ND ND ND -- ug/L 04/16/09 0.4 5 ND ND ND ND ND -- ug/L 10/07/09 0.4 5 ND ND ND ND ND -- ug/L 04/28/10 0.22 5 ND ND ND ND ND ND ug/L 10/11/10 0.4 5 -- ND ND ND ND ND ug/L 05/10/11 2.1 5 ND ND ND ND ND ND ug/L 10/06/11 2.1 5 ND ND ND ND ND ND ug/L 04/16/12 0.45 5 ND ND ND ND ND ND ug/L 10/24/12 0.45 5 ND ND ND ND ND ND ug/L 04/24/13 0.67 5 ND ND ND ND ND ND ug/L 09/10/13 0.45 5 ND ND ND ND ND ND ug/L 04/22/14 0.45 5 ND ND ND ND ND ND ug/L 10/06/14 0.45 5 ND ND ND ND ND -- ug/L 04/07/15 0.45 5 ND ND ND ND ND -- ug/L 10/07/15 0.45 5 ND ND ND ND ND -- ug/L 04/26/16 0.45 5 ND ND ND ND ND -- ug/L 09/28/16 0.45 5 ND ND ND ND ND -- ug/L 04/27/17 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 -- ND ND ND ND ND ND ug/L 04/08/19 0.45 3.0 -- ND ND ND -- ND ND ug/L 10/09/19 0.45 3.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.45 3.0 -- ND ND ND ND ND ND 1,4-Dioxane ug/L 10/18/18 1.2 2.0 -- ND 240 250 300 60 ND NC 2L = 3 ug/L ug/L 04/08/19 1.2 2.0 -- 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 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. 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 Starting with the 11/18 event, J flags are estimated values between MDL and PQL. Laboratory method blank data was unavailable prior to April 2017. However, B flags for the 04/16/09, 10/07/09, and 10/11/10 were present on laboratory electronic files. The following dilutions were noted for the April 2020 event: 1,4-dioxane by (10x) in 1-1 SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on 01/18/07 ,> GOLDER 8of8 July 2020 19131339.101 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 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 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 GOLDER 1 of 2 July 2020 19131339.101 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 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 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 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 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 2of2 July 2020 19131339.101 TABLE 6 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 Monitoring Points Detection Quanitation Reporting 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 J 0.225 J 0.258 J ND ug/L 10/11/10 0.22 -- 6 -- 0.329 J 0.254 J 0.233 J 0.221 J ND ug/L 05/12/11 0.22 -- 6 0.448 J ND 0.287 J 0.241 J 0.261 J ND ug/L 10/07/11 1.1 -- 6 ND ND ND 0.287 J 0.24 J ND ug/L 04/19/12 0.22 -- 6 0.279 J ND 0.34 J 0.308 J 0.284 J ND ug/L 10/26/12 0.22 -- 6 ND ND ND ND ND ND ug/L 04/25/13 0.22 -- 6 ND ND ND ND ND ND ug/L 09/12/13 0.22 -- 6 ND 0.344 J 0.28 J ND ND ND ug/L 04/25/14 0.22 -- 6 0.695 J 1.62 J 0.582 J 0.332 J 0.264 J ND ug/L 10/02/14 0.22 -- 6 0.526 J ND 0.378 J 0.268 J 0.267 J ND ug/L 04/06/15 0.22 -- 6 0.312 J ND 0.232 J ND 0.754 J ND ug/L 10/07/15 0.22 -- 6 0.268 J ND 0.372 J 0.259 J ND ND ug/L 04/20/16 0.22 -- 6 0.22 ND ND 0.424 J 0.261 J ND ug/L 09/26/16 0.22 -- 6 ND ND ND ND 0.479 J ND ug/L 04/28/17 0.37 -- 6 0.708 J ND 0.485 J ND ND ND ug/L 10/17/17 0.37 -- 6 0.455 J ND 0.490 J ND 0.654 J ND ug/L 04/16/18 1.85 -- 6 ND ND ND ND ND ND ug/L 10/18/18 1.85 5.00 -- ND ND ND ND ND ND ug/L 04/12/19 0.74 2.00 -- ND ND ND ND ND ND ug/L 10/08/19 0.74 2.00 -- ND ND ND ND ND ND ug/L 04/20/20 0.74 2.00 -- ND ND ND ND ND ND Arsenic ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND Human Health = 10 ug/L ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 10/01/03 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 05/01/05 -- -- 10 ND ND ND ND ND ND ug/L 10/01/05 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 10/01/06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND 2.4 J ND 2.2 J ND ug/L 12/04/08 2.8 -- 10 -- ND ND ND ND ND ug/L 04/13/09 2.8 -- 10 -- ND ND ND ND ND ug/L 10/20/09 2.8 -- 10 ND ND ND ND ND ND ug/L 04/30/10 2.8 -- 10 -- ND ND ND ND ND ug/L 10/11/10 2.8 -- 10 -- ND ND ND ND ND ug/L 05/12/11 2.8 -- 10 3.04 J 3.39 J ND ND ND ug/L 10/07/11 2.8 -- 10 ND ND ND ND ND ND ug/L 04/19/12 2.8 -- 10 ND ND 3.12 J ND ND ND ug/L 10/26/12 2.8 -- 10 ND ND ND ND 5.25 J ND ug/L 04/25/13 2.8 -- 10 ND ND ND ND ND ND ug/L 09/12/13 5.4 -- 10 ND ND ND ND ND ND ug/L 04/25/14 5.4 -- 10 ND ND ND ND ND ND ug/L 10/02/14 5.4 -- 10 6.11 J ND ND ND ND ND ug/L 04/06/15 6.8 -- 10 ND ND ND ND ND ND ug/L 10/07/15 6.8 -- 10 ND ND ND ND ND ND ug/L 04/20/16 6.8 -- 10 ND ND ND ND ND ND ug/L 09/26/16 6.8 -- 10 ND ND ND ND ND ND ug/L 04/28/17 6.8 -- 10 ND ND ND ND ND ND ug/L 10/17/17 6.8 -- 10 ND ND ND ND ND ND ug/L 04/16/18 6.8 -- 10 ND ND ND 9.17 J ND ND ug/L 10/18/18 7.6 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 7.6 10.0 -- ND ND ND ND ND ND ug/L 10/08/19 7.6 10.0 -- ND ND ND ND ND ND ug/L 04/20/20 7.6 10.0 -- ND ND ND ND ND ND Barium ug/L 03/01/00 -- -- 500 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 500 ND ND ND ND ND ND Human Health = 200 mg/L ug/L 03/01/01 -- -- 500 ND ND ND ND ND ND ug/L 09/01/01 -- -- 500 ND ND ND ND ND ND ug/L 03/01/02 -- -- 500 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 500 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 500 ND ND ND ND ND ND ug/L 10/01/03 -- -- 500 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 500 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 500 ND ND ND ND ND ND ug/L 05/01/05 -- -- 500 ND ND ND ND ND ND ug/L 10/01/05 -- -- 500 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 500 ND ND ND ND ND ND ug/L 10/01/06 -- -- 500 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 41.8 J 54.8 J 21.7 J 25.4 J 25.6 J ND ug/L 09/25/07 -- -- -- 74.5 J 70.9 J 16.8 J 23 J 24 J ND ug/L 05/05/08 0.2 -- 100 -- 51.2 B 53 B 92.5 B 65.5 B ND ug/L 12/04/08 1 -- 100 -- 35.9 J 21.8 J 27 J 27 J ND ug/L 04/13/09 4.2 -- 100 -- 53.4 J 44.8 J 41.6 J 42 J ND ug/L 10/20/09 1 -- 100 68.3 J 36.3 J 21.8 J 27.2 J 26.9 J ND ug/L 04/30/10 1 -- 100 -- 48.5 J 30.9 J 37.1 J 44.2 J ND ug/L 10/11/10 1 -- 100 -- 47.1 J 18.8 J 29.3 J 30.6 J ND ug/L 05/12/11 1 -- 100 77.3 J 39.3 J 40.3 J 35.3 J 37 J ND ug/L 10/07/11 1 -- 100 74.2 J 76.4 J 21.4 J 42.7 J 32.2 J ND ug/L 04/19/12 1 -- 100 43.7 J 48.4 J 23.5 J 33.7 J 33.7 J ND ug/L 10/26/12 1 -- 100 48.2 J 51.2 J 25.2 J 34.8 J 35.1 J ND ug/L 04/25/13 1 -- 100 57 J 65.1 J 28.5 J 40.8 J 37.8 J ND ug/L 09/12/13 1 -- 100 56.7 J 40.7 J 25.3 J 31.5 J 33.9 J ND ug/L 04/25/14 1 -- 100 100 60.8 J 49.3 J 52.7 J 48.8 J ND ug/L 10/02/14 1 -- 100 112 45.9 J 22.3 J 24.4 J 25.1 J ND ug/L 04/06/15 1 -- 100 59.3 J 44.3 J 42.2 J 35.5 J 47.3 J ND ug/L 10/07/15 1 -- 100 85.7 J 46.2 J 28.3 J 319 41 J ND ug/L 04/20/16 1 -- 100 113 46.3 J 47.5 J 31 J 35.4 J ND ug/L 09/26/16 1 -- 100 44.8 J 52.8 J 17.6 J 27.9 J 33.9 J ND ug/L 04/28/17 1 -- 100 46.5 J 45.4 J 59.9 J 50.2 J 45.0 J ND ug/L 10/17/17 1 -- 100 40.1 J 33.6 J 55.8 J 41.2 J 37.8 J ND ug/L 04/16/18 1 -- 100 42.9 J 45.4 J 42.1 J 43.9 J 44.1 J ND ug/L 10/18/18 1.1 10.0 -- 56.6 57.4 56.4 61.7 61.3 ND ug/L 04/12/19 1.1 10.0 -- 60.9 64.6 40.0 56.8 56.6 ND ug/L 10/08/19 1.1 10.0 -- 55.9 49.1 55.1 57.8 60.0 ND ug/L 04/20/20 1.1 10.0 -- 41.9 48.0 44.2 42.2 40.5 ND Beryllium ug/L 03/01/00 -- -- 2 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 2 ND ND ND ND ND ND Acute = 65 ug/L ug/L 03/01/01 -- -- 2 ND ND ND ND ND ND Chronic = 6.5 ug/L ug/L 09/01/01 -- -- 2 ND ND ND ND ND ND ug/L 03/01/02 -- -- 2 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 2 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 2 2.4 2.4 2.3 2.3 ND ND ug/L 10/01/03 -- -- 2 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 2 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 2 ND ND ND ND ND ND ug/L 05/01/05 -- -- 2 ND ND ND ND ND ND ug/L 10/01/05 -- -- 2 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 2 ND ND ND ND ND ND ug/L 10/01/06 -- -- 2 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.7 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.1 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.08 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.1 -- 1 0.113 J ND ND ND ND 0.42 J ug/L 04/30/10 0.1 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.1 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.1 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.1 -- 1 ND 0.149 J ND ND ND ND ug/L 04/19/12 0.1 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.1 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.1 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.1 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.1 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.1 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.1 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.1 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.1 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.1 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.13 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.13 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.16 1.00 -- ND ND ND ND ND ND ug/L 04/12/19 0.16 1.00 -- ND ND ND ND ND ND ug/L 10/08/19 0.16 1.00 -- ND ND ND ND ND ND ug/L 04/20/20 0.16 1.00 -- ND ND ND ND ND ND Cadmium ug/L 03/01/00 -- -- 1 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 1 ND ND ND ND ND ND Acute = SW-1: 4.59 ug/L, ug/L 03/01/01 -- -- 1 ND ND ND ND ND ND SW-2: 4.13 ug/L, SW-3: 3.67 ug/L, ug/L 09/01/01 -- -- 1 1.1 ND ND ND ND ND SW-4: 3.79 ug/L, and SW-5: 3.14 ug/L ug/L 03/01/02 -- -- 1 ND ND ND ND ND ND Chronic = SW-1: 0.66 ug/L, ug/L 09/01/02 -- -- 1 ND 1.2 ND ND ND ND SW-2: 0.60 ug/L, SW-3: 0.55 ug/L, ug/L 04/01/03 -- -- 1 4.1 3.8 4.0 3.9 ND ND SW-4: 0.66 ug/L, and SW-5: 0.48 ug/L ug/L 10/01/03 -- -- 1 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 1 1.0 ND 1.0 ND ND ND ug/L 09/01 /04 -- -- 1 ND ND ND 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 ND ND ND ND ND ND ug/L 10/01/06 -- -- 1 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.5 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.36 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.09 -- 1 -- 0.14 J 0.17 J 0.26 J 0.21 J ND ug/L 10/20/09 0.36 -- 1 0.477 J ND ND ND ND ND ug/L 04/30/10 0.36 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.36 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.36 -- 1 0.471 J ND ND ND ND ND ug/L 10/07/11 0.36 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.36 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.36 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.36 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.36 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.36 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.36 -- 1 0.661 J ND ND ND ND ND ug/L 04/06/15 0.36 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.36 -- 1 0.784 J ND ND 5.66 ND ND ug/L 04/20/16 0.36 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.36 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.36 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.36 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.36 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.36 1.00 -- ND ND ND ND ND ND ug/L 04/12/19 0.36 1.00 -- ND ND ND ND ND ND ug/L 10/08/19 0.36 1.00 -- ND ND ND ND ND ND ug/L 04/20/20 0.36 1.00 -- ND ND ND ND ND ND (30 GOLDER 1 of 5 July 2020 19131339.101 TABLE 6 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 Monitoring Points Detection Quanitation Reporting Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 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 Acute = SW-1: 926 ug/L, ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-2: 837 ug/L, SW-3: 751 ug/L, ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND SW-4: 926 ug/L, and SW-5: 648 ug/L ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND Chronic = SW-1: 121 ug/L, ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND SW-2: 97.6 ug/L, SW-3: 97.6 ug/L, ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND SW-4: 121 ug/L, and SW-5: 84.2 ug/L ug/L 10/01/03 -- -- 10 ND ND 10 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 ND 15.0 ND ND ug/L 12/04/08 1 -- 10 -- ND 2.3 J ND 1.40 J ND ug/L 04/13/09 0.7 -- 10 -- 1.40 J 1.60 J 1.10 J 1.10 J ND ug/L 10/20/09 1 -- 10 8.16 J ND ND ND ND ND ug/L 04/30/10 1 -- 10 -- ND 1.14 J ND 1.95 J ND ug/L 10/11/10 1 -- 10 -- 2.52 J 1.00 1.00 1.00 ND ug/L 05/12/11 1 -- 10 4.37 J ND 1.09 J ND ND ND ug/L 10/07/11 1 -- 10 6.97 J 6.25 J 1.21 J 3.00 J ND ND ug/L 04/19/12 1 -- 10 1.11 J ND ND ND ND ND ug/L 10/26/12 1 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.4 -- 10 1.44 J 2.12 J ND ND 2.57 J ND ug/L 09/12/13 1.4 -- 10 ND ND ND ND ND ND ug/L 04/25/14 1.4 -- 10 11.7 ND 4.26 J 1.7 J ND ND ug/L 10/02/14 1.4 -- 10 20.6 B 2.13 B 13.4 B 2.50 B 2.70 B -- ug/L 04/06/15 1.4 -- 10 3.66 J ND 3.36 J ND 3.51 J ND ug/L 10/07/15 1.4 -- 10 7.93 J ND ND 66.1 ND ND ug/L 04/20/16 1.4 -- 10 14.6 ND 6.73 J ND ND ND ug/L 09/26/16 1.4 -- 10 ND ND ND ND ND ND ug/L 04/28/17 1.4 -- 10 ND ND 5.88 J 1.43 J ND ND ug/L 10/17/17 1.4 -- 10 ND ND 3.94 J ND ND ND ug/L 04/16/18 1.4 -- 10 1.74 J ND 1.80 J ND 1.92 J ND ug/L 10/18/18 1.4 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 1.4 10.0 -- 1.93 J 1.77 J ND ND 2.09 J ND ug/L 10/08/19 1.4 10.0 -- 1.83 J ND ND ND ND ND ug/L 04/20/20 1.4 10.0 -- 1.65 J ND 1.70 J ND ND ND Cobalt ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND 17 ND ND ND ND ug/L 04/01/03 -- -- 10 14 14 15 14 ND ND 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 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 1.4 10.0 -- ND 1.40 J ND ND ND ND ug/L 10/08/19 1.4 10.0 -- ND ND ND ND ND ND ug/L 04/20/20 1.4 10.0 -- ND ND ND ND ND ND Copper ug/L 03/01/00 -- -- 200 ND ND ND ND ND ND SW Standards ug/L 09/01/00 -- -- 200 ND ND ND ND ND ND Acute = SW-1: 23.5 ug/L, ug/L 03/01/01 -- -- 200 ND ND ND ND ND ND SW-2: 20.9 ug/L, SW-3: 18.5 ug/L, ug/L 09/01/01 -- -- 200 ND ND ND ND ND ND SW-4: 23.5 ug/L, and SW-5: 15.6 ug/L ug/L 03/01/02 -- -- 200 ND ND ND ND ND ND Chronic = SW-1: 14.9 ug/L, ug/L 09/01/02 -- -- 200 ND ND ND ND ND ND SW-2: 13.4 ug/L, SW-3: 11.9 ug/L, ug/L 04/01/03 -- -- 200 ND ND ND ND ND ND SW-4: 14.9 ug/L, and SW-5: 10.2 ug/L ug/L 10/01/03 -- -- 200 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 200 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 200 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 200 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 200 ND ND ND ND ND ND 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 10.0 -- 3.11 J 3.84 J 2.72 J 2.42 J 3.55 J ND ug/L 04/12/19 1.6 10.0 -- 3.44 J 5.44 J 5.11 J 3.66 J 4.18 J ND ug/L 10/08/19 1.6 10.0 -- 2.23 J 1.81 J 2.92 J 2.66 J 1.60 J ND ug/L 04/20/20 1.6 10.0 -- 4.72 J ND 4.85 J 6.44 J 4.63 J ND Lead ug/L 03/01/00 -- 10 ND ND 15 ND ND ND SW Standards ug/L 09/01/00 -- -- 10 ND ND 10 ND ND ND Acute = SW-1: 122 ug/L, ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-2: 107 ug/L, SW-3: 93.0 ug/L, ug/L 09/01/01 -- -- 10 25 ND ND ND ND ND SW-4: 122 ug/L, and SW-5: 76.6 ug/L ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND Chronic = SW-1: 4.77 ug/L, ug/L 09/01/02 -- -- 10 ND 86 ND ND ND ND SW-2: 4.18 ug/L, SW-3: 3.62 ug/L, ug/L 04/01/03 -- -- 10 ND ND ND ND ND ND SW-4: 4.77 ug/L, and SW-5: 2.98 ug/L 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 -- -- -- 11.2 ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND 14.8 ND ND ug/L 12/04/08 1.9 -- 10 -- ND ND ND ND ND ug/L 04/13/09 1.6 -- 10 -- 2.30 J 2.50 J 1.60 1.60 ND ug/L 10/20/09 1.9 -- 10 8.94 J ND ND 2.44 J 3.34 J ND ug/L 04/30/10 1.9 -- 10 -- ND ND ND 2.04 J ND ug/L 10/11/10 1.9 -- 10 -- 5.45 J 1.90 1.90 1.90 ND ug/L 05/12/11 1.9 -- 10 15.4 ND 2.00 J ND ND ND ug/L 10/07/11 1.9 -- 10 10.0 16.4 ND 3.33 J ND ND ug/L 04/19/12 1.9 -- 10 ND ND 2.38 J ND ND ND ug/L 10/26/12 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.9 -- 10 ND 4.74 J ND ND ND ND ug/L 09/12/13 2.1 -- 10 ND ND ND ND ND ND ug/L 04/25/14 2.1 -- 10 11.2 3.23 J 3.36 J 2.23 J 2.82 J ND ug/L 10/02/14 2.1 -- 10 ND ND ND ND ND ND ug/L 04/06/15 3.1 -- 10 ND ND ND ND ND ND ug/L 10/07/15 3.1 -- 10 7.02 J ND ND 93.2 ND ND ug/L 04/20/16 3.1 -- 10 14.6 ND 6.10 J ND ND ND ug/L 09/26/16 3.1 -- 10 ND ND ND ND ND ND ug/L 04/28/17 3.1 -- 10 ND ND 4.66 J ND ND ND ug/L 10/17/17 3.1 -- 10 ND ND 3.18 J ND ND ND ug/L 04/16/18 3.1 -- 10 ND ND ND ND ND ND ug/L 10/18/18 3.1 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 3.1 10.0 -- 3.91 J ND ND ND ND ND ug/L 10/08/19 3.1 10.0 -- ND ND ND ND ND ND ug/L 04/20/20 3.1 10.0 -- ND ND ND ND ND ND Nickel ug/L 03/01/00 -- -- 50 ND ND ND ND ND ND SW Standards ug/L 09/01/00 -- -- 50 ND ND 82 65 81 ND Acute = SW-1: 774 ug/L, ug/L 03/01/01 -- -- 50 ND ND ND ND ND ND SW-2: 697 ug/L, SW-3: 622 ug/L, ug/L 09/01/01 -- -- 50 ND ND ND ND ND ND SW-4: 774 ug/L, and SW-5: 535 ug/L ug/L 03/01/02 -- -- 50 ND ND ND ND ND ND Chronic = SW-1: 85.9 ug/L, ug/L 09/01/02 -- -- 50 ND ND ND ND ND ND SW-2: 77.4 ug/L, SW-3: 69.1 ug/L, ug/L 04/01/03 -- -- 50 ND ND ND ND ND ND SW-4: 85.9 ug/L, and SW-5: 59.4 ug/L ug/L 10/01/03 -- -- 50 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 50 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 50 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 50 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 50 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 50 ND ND ND ND ND ND ug/L 10/01/06 -- -- 50 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 2.7 J ND 2.5 J ND ug/L 09/25/07 -- -- -- ND ND 7.6 J ND ND ND ug/L 05/05/08 2.0 -- 50 -- 3.5 J 3.9 J 5.5 J 6.7 J ND ug/L 12/04/08 1.8 -- 50 -- ND 4.3 J 3.8 J 3.2 J ND ug/L 04/13/09 0.6 -- 50 -- 2.3 J 1.5 J 1.6 J 1.5 J ND ug/L 10/20/09 1.8 -- 50 2.94 J ND 2.53 J 1.89 J ND ND ug/L 04/30/10 1.8 -- 50 -- ND ND ND 2.14 J ND ug/L 10/11/10 1.8 -- 50 -- 1.80 2.22 J 1.80 1.80 ND ug/L 05/12/11 1.8 -- 50 2.34 J ND ND 2.57 J 2.66 J ND ug/L 10/07/11 1.8 -- 50 3.64 J 4.23 J 6.40 J 4.31 J 3.43 J ND ug/L 04/19/12 1.8 -- 50 ND ND 2.56 J 2.00 J 2.23 J ND ug/L 10/26/12 1.8 -- 50 ND 1.92 J 5.32 J 5.14 J 5.46 J ND ug/L 04/25/13 1.8 -- 50 2.38 J 3.30 J 6.20 J 6.96 J 6.85 J ND ug/L 09/12/13 1.8 -- 50 ND ND 2.09 J ND ND ND ug/L 04/25/14 1.8 -- 50 4.30 J 2.07 J 7.49 J 5.52 J 5.55 J ND ug/L 10/02/14 1.8 -- 50 7.25 J ND 23.7 J 9.96 J 10.6 J ND ug/L 04/06/15 1.8 -- 50 2.02 J ND 3.03 J 2.33 J 2.46 J ND ug/L 10/07/15 1.8 -- 50 3.16 J ND 6.56 J 22.0 J 3.14 J ND ug/L 04/20/16 2.2 -- 50 5.60 J ND 5.02 J 8.54 J 2.88 J ND ug/L 09/26/16 2.2 -- 50 ND ND 3.54 J 3.34 J 6.44 J ND ug/L 04/28/17 2.2 -- 50 ND ND 6.02 J 2.83 J 2.62 J ND ug/L 10/17/17 2.2 -- 50 ND ND ND ND ND ND ug/L 04/16/18 2.2 -- 50 ND ND ND ND ND ND ug/L 10/18/18 2.2 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 2.2 10.0 -- ND ND ND ND ND ND ug/L 10/08/19 2.2 10.0 -- ND ND ND ND 2.40 J ND ug/L 04/20/20 2.2 10.0 -- 36.8 ND 3.71 J ND ND ND k> GOLDER 2of5 July 2020 19131339.101 TABLE 6 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 Monitoring Points Detection Quanitation Reporting Blanks (SW Standard) Units Date Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Selenium ug/L 03/01/00 -- -- 20 ND ND ND ND ND ND SW Standards ug/L 09/01/00 -- -- 20 ND ND ND ND ND ND Acute = 5 ug/L ug/L 03/01/01 -- -- 20 ND ND ND ND ND ND Chronic = 5 ug/L ug/L 09/01/01 -- -- 20 ND ND ND ND ND ND ug/L 03/01/02 -- -- 20 ND ND ND ND ND ND ug/L 09/01/02 -- -- 20 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 20 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 20 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 20 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 20 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 20 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 20 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 20 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 20 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND 2.9 J ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 2 -- 10 -- ND ND ND ND ND ug/L 12/04/08 2.7 -- 10 -- ND ND ND ND ND ug/L 04/13/09 3.4 -- 10 -- ND ND ND ND ND ug/L 10/20/09 2.7 -- 10 ND ND ND ND ND ND ug/L 04/30/10 0.83 -- 10 -- 1.72 J 0.9 J 0.974 J 1.23 J ND ug/L 10/11/10 0.83 -- 10 -- 0.83 0.83 0.83 0.875 J ND ug/L 05/12/11 0.83 -- 10 ND ND ND 1.16 J 0.926 J ND ug/L 10/07/11 4.15 -- 10 ND ND ND 1.03 J 1.16 J ND ug/L 04/19/12 0.83 -- 10 ND ND ND ND ND ND ug/L 10/26/12 0.83 -- 10 ND ND ND ND ND ND ug/L 04/25/13 0.83 -- 10 ND ND ND ND ND ND ug/L 09/12/13 0.91 -- 10 ND ND ND ND ND ND ug/L 04/25/14 0.91 -- 10 ND ND ND ND ND ND ug/L 10/02/14 0.91 -- 10 ND ND ND ND ND ND ug/L 04/06/15 0.91 -- 10 ND ND ND ND ND ND ug/L 10/07/15 0.91 -- 10 ND ND ND ND ND ND ug/L 04/20/16 0.91 -- 10 ND ND ND ND ND ND ug/L 09/26/16 0.91 -- 10 ND ND ND ND ND ND ug/L 04/28/17 6.2 -- 10 ND ND ND ND ND ND ug/L 10/17/17 6.2 -- 10 ND ND ND ND ND ND ug/L 04/16/18 6.2 -- 10 ND ND ND ND ND ND ug/L 10/18/18 6.2 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 6.2 10.0 -- ND ND ND ND ND ND ug/L 10/08/19 6.2 10.0 -- ND ND ND ND ND ND ug/L 04/20/20 6.2 10.0 -- ND ND ND ND ND ND Silver ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND SW Standards ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND Acute = SW-1: 8.93 ug/L, ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND SW-2: 7.22 ug/L, SW-3: 5.74 ug/L, ug/L 09/01/01 -- -- 10 ND ND ND ND ND ND SW-4: 8.93 ug/L, and SW-5: 4.21 ug/L ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND Chronic = 0.6 ug/L 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 2.20 J ND 2.40 J ND ug/L 12/04/08 1.9 -- 10 -- ND ND ND 2.80 J ND ug/L 04/13/09 1.0 -- 10 -- ND ND ND ND ND ug/L 10/20/09 1.9 -- 10 ND ND ND ND ND ND ug/L 04/30/10 1.9 -- 10 -- 2.22 J ND ND ND ND ug/L 10/11/10 1.9 -- 10 -- ND ND ND ND ND ug/L 05/12/11 1.9 -- 10 ND ND ND ND ND ND ug/L 10/07/11 1.9 -- 10 ND ND ND ND ND ND ug/L 04/19/12 1.9 -- 10 ND ND ND ND ND ND ug/L 10/26/12 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/13 1.9 -- 10 2.06 J ND 1.95 J 2.29 J 2.31 J ND ug/L 09/12/13 1.9 -- 10 ND ND ND ND ND ND ug/L 04/25/14 1.9 -- 10 ND ND ND ND ND ND ug/L 10/02/14 1.9 -- 10 ND ND ND ND ND ND ug/L 04/06/15 1.9 -- 10 ND ND ND ND ND ND ug/L 10/07/15 1.9 -- 10 ND ND 2.74 J ND 2.32 J ND ug/L 04/20/16 1.9 -- 10 ND ND ND ND ND ND ug/L 09/26/16 1.9 -- 10 ND ND ND ND ND ND ug/L 04/28/17 1.9 -- 10 ND ND ND ND ND ND ug/L 10/17/17 1.9 -- 10 ND ND ND ND ND ND ug/L 04/16/18 1.9 -- 10 ND ND ND ND ND ND ug/L 10/18/18 1.9 10.0 -- ND ND ND ND ND ND ug/L 04/12/19 1.9 10.0 -- ND ND ND ND ND ND ug/L 10/08/19 1.9 10.0 -- ND ND ND ND ND ND ug/L 04/20/20 1.9 10.0 -- ND ND ND ND ND ND Thallium ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01/01 -- -- 10 ND ND ND ND 12 ND ug/L 03/01/02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 0.053 J 0.05 J 0.045 J 0.055 J 0.054 J ND ug/L 05/05/08 0.036 -- 5.5 -- ND ND ND ND ND ug/L 12/04/08 0.036 -- 5.5 -- ND ND ND ND ND ug/L 04/13/09 0.036 -- 5.5 -- ND ND ND ND ND ug/L 10/20/09 0.11 -- 5.5 0.11 0.11 0.11 0.11 0.11 ND ug/L 04/30/10 0.11 -- 5.5 -- ND ND ND ND ND ug/L 10/11/10 0.11 -- 5.5 -- ND ND ND ND ND ug/L 05/12/11 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/07/11 0.55 -- 5.5 ND ND ND ND ND ND ug/L 04/19/12 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/26/12 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/25/13 0.11 -- 5.5 ND ND ND ND ND ND ug/L 09/12/13 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/25/14 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/02/14 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/06/15 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/07/15 0.11 -- 5.5 ND ND ND ND ND ND ug/L 04/20/16 0.11 -- 5.5 ND ND ND ND ND ND ug/L 09/26/16 0.11 -- 5.5 0.190 J 0.124 J 0.205 J 0.187 J 0.316 J ND ug/L 04/28/17 0.11 -- 5.5 0.389 J 0.267 J 0.261 J 0.287 J 0.205 J ND ug/L 10/17/17 0.11 -- 5.5 0.819 J 0.655 J 0.698 J 0.840 J 0.425 J ND ug/L 04/16/18 0.11 -- 5.5 ND ND ND ND ND ND ug/L 10/18/18 0.55 5.00 -- ND ND ND ND ND ND ug/L 04/12/19 0.22 2.00 -- ND ND ND ND ND ND ug/L 10/08/19 0.22 2.00 -- ND ND ND ND ND ND ug/L 04/20/20 0.22 2.00 -- ND ND ND ND ND ND Vanadium ug/L 03/01/00 -- -- 40 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 40 ND ND ND ND ND ND ug/L 03/01/01 -- -- 40 ND ND ND ND ND ND ug/L 09/01/01 -- -- 40 ND ND ND ND ND ND ug/L 03/01/02 -- -- 40 ND ND ND ND ND ND ug/L 09/01/02 -- -- 40 ND 44 ND ND ND ND ug/L 04/01 /03 -- -- 40 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 40 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 40 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 40 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 40 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 40 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 40 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 40 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- 7.1 J ND ND 1.5 J 1.2 J ND ug/L 05/05/08 1 -- 25 -- ND ND 9.3 J 2.4 J ND ug/L 12/04/08 1.4 -- 25 -- ND ND ND 2.5 J ND ug/L 04/13/09 0.7 -- 25 -- 4.2 J 2.1 J 2.5 J 2.6 J ND ug/L 10/20/09 1.4 -- 25 10.7 J 2.19 J 1.81 J 2.79 J 1.86 J ND ug/L 04/30/10 1.4 -- 25 -- ND ND ND 3.45 J ND ug/L 10/11/10 1.4 -- 25 -- 8.27 J 3.03 J 2.55 J 2.02 J ND ug/L 05/12/11 1.4 -- 25 8.52 J 1.90 J 2.35 J 2.27 J 2.42 J ND ug/L 10/07/11 1.4 -- 25 11.9 J 21.0 J 2.27 J 6.55 J 1.66 J ND ug/L 04/19/12 1.4 -- 25 2.33 J ND 1.48 J 1.60 J 1.44 J ND ug/L 10/26/12 1.4 -- 25 ND ND ND ND ND ND ug/L 04/25/13 1.4 -- 25 2.31 J 5.99 J ND ND ND ND ug/L 09/12/13 1.4 -- 25 2.11 J ND 1.70 J 1.53 J ND ND ug/L 04/25/14 1.4 -- 25 17.9 J ND 4.7 J 2.25 J 1.60 J ND ug/L 10/02/14 1.4 -- 25 42.2 ND 3.14 J 2.66 J 2.26 J ND ug/L 04/06/15 1.4 -- 25 2.34 J ND 3.33 J ND 4.62 J ND ug/L 10/07/15 1.4 -- 25 18.2 J 2.91 J 3.69 J 61.8 3.05 J ND ug/L 04/20/16 1.4 -- 25 26.9 ND 12.0 J 2.13 J 3.04 J ND ug/L 09/26/16 1.4 -- 25 1.95 J ND ND 1.64 J 4.58 J ND ug/L 04/28/17 1.4 -- 25 2.61 J 1.66 J 8.36 J 2.35 J 2.36 J ND ug/L 10/17/17 1.4 -- 25 2.42 J ND 7.92 J 3.42 J 2.88 J ND ug/L 04/16/18 1.4 -- 25 2.33 J 2.14 J 2.45 J 2.94 J 3.67 J ND ug/L 10/18/18 1.4 10.0 -- 1.88 J 2.26 J 1.51 J 1.61 J 1.70 J ND ug/L 04/12/19 1.4 10.0 -- 1.54 J 4.16 J 2.39 J 1.78 J 2.09 J ND ug/L 10/08/19 1.4 10.0 -- 2.45 J ND 2.33 J 1.96 J 1.78 J ND ug/L 04/20/20 1.4 10.0 -- 1.75 J ND 2.28 J 2.49 J 1.85 J ND Zinc ug/L 03/01/00 -- -- 50 ND ND 31 58 68 ND SW Standards ug/L 09/01/00 -- -- 50 ND ND 130 50 60 ND Acute = SW-1: 194 ug/L, ug/L 03/01/01 -- -- 50 ND ND 68 ND 56 ND SW-2: 175 ug/L, SW-3: 156 ug/L, ug/L 09/01/01 -- -- 50 120 ND 60 ND 50 ND SW-4: 194 ug/L, and SW-5: 134 ug/L ug/L 03/01/02 -- -- 50 ND ND 70 50 60 ND Chronic = SW-1: 195 ug/L, ug/L 09/01/02 -- -- 50 ND 180 80 ND ND ND SW-2: 176 ug/L, SW-3: 157 ug/L, ug/L 04/01/03 -- -- 50 ND ND ND ND 50 ND SW-4: 195 ug/L, and SW-5: 135 ug/L ug/L 10/01/03 -- -- 50 ND ND 120 50 50 ND ug/L 03/01 /04 -- -- 50 ND ND 52 ND ND ND ug/L 09/01 /04 -- -- 50 58 ND 56 ND 59 ND ug/L 05/01 /05 -- -- 50 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 50 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 50 ND ND 51.6 ND ND ND ug/L 10/01 /06 -- -- 50 ND ND 60.9 ND ND ND ug/L 04/10/07 -- -- -- 7.6 J 23.5 48.4 38.2 39.5 ND ug/L 09/25/07 -- -- -- 84.9 11.4 60.4 36.4 45.7 ND ug/L 05/05/08 1.0 -- 10 -- 5.8 J 6.4 J 154 20.4 ND ug/L 12/04/08 3.8 -- 10 -- 22.4 47.9 35.3 34.6 ND ug/L 04/13/09 3.4 -- 10 -- 24.9 21.4 25.8 27.2 ND ug/L 10/20/09 3.8 -- 10 70.0 7.62 J 45.2 30.9 33.2 ND ug/L 04/30/10 3.8 -- 10 -- 6.64 J 48.1 34.0 54.2 ND ug/L 10/11/10 3.8 -- 10 -- 32.0 30.1 22.8 22.9 ND ug/L 05/12/11 3.8 -- 10 76.2 10.1 33.5 27.7 36.9 ND ug/L 10/07/11 3.8 -- 10 102 62.1 45.0 60.5 32.1 ND ug/L 04/19/12 3.8 -- 10 5.98 J ND 32.0 21.6 22.9 ND ug/L 10/26/12 3.8 -- 10 12.3 5.81 J 25.3 20.3 22.0 ND ug/L 04/25/13 3.8 -- 10 15.0 25.8 42.6 31.6 33.1 ND ug/L 09/12/13 3.8 -- 10 9.73 J ND 29.8 14.9 17.1 ND ug/L 04/25/14 3.8 -- 10 66.3 7.92 J 63.3 37.2 33.7 ND ug/L 10/02/14 3.8 -- 10 144 3.94 J 63.6 34.9 34.0 ND ug/L 04/06/15 3.8 -- 10 16.4 5.33 J 57.3 30.0 51.6 ND ug/L 10/07/15 3.8 -- 10 117 7.88 J 25.2 1020 24.5 ND ug/L 04/20/16 4.4 -- 10 111 ND 95.5 31.5 44.7 ND ug/L 09/26/16 4.4 -- 10 5.08 J 5.21 J 20 16.4 27.7 ND ug/L 04/28/17 4.4 -- 10 11.0 6.98 J 64.8 21.1 20.1 ND ug/L 10/17/17 4.4 -- 10 8.83 J ND 32.5 5.72 J ND ND ug/L 04/16/18 4.4 -- 10 11.4 10.6 10.3 16.3 15.7 ND ug/L 10/18/18 4.4 10.0 -- 12.9 12.2 11.8 17.5 18.4 ND ug/L 04/12/19 4.4 10.0 -- 11.6 16.2 13.9 12.1 15.6 ND ug/L 10/08/19 4.4 10.0 -- 7.17 J ND 6.31 J 6.76 J 7.48 J ND ug/L 04/20/20 4.4 10.0 -- 27.1 ND 13.6 13.3 10.1 ND k> GOLDER 3of5 July 2020 19131339.101 TABLE 6 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 Monitoring Points (SW Standard) Units Date Detection Quanitation Reporting Blanks Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Acetone ug/L 03/01/00 -- -- 100 ND ND ND ND ND -- SW Standard = 2000 ug/L ug/L 09/01/00 -- -- 100 ND ND ND ND ND ND ug/L 03/01/01 -- -- 100 ND ND ND ND ND ND ug/L 09/01 /01 -- -- 100 ND ND ND ND ND ND ug/L 03/01/02 -- -- 100 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 100 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 100 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 100 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 100 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 100 ND ND ND ND ND ND ug/L 05/01/05 -- -- 100 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 100 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 100 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 100 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND 5.3 J 68 J 1.7 J 6.3 J ND ug/L 05/05/08 0.62 -- 100 -- ND ND ND ND ND ug/L 12/04/08 1.5 -- 100 -- 7.9 J 9.1 J 7.6 J 7.8 J ND ug/L 04/13/09 1.5 -- 100 -- ND ND ND ND ND ug/L 10/20/09 1.5 -- 100 ND ND 6.0 J ND 6.2 J ND ug/L 04/30/10 1.5 -- 100 -- 3.0 J 3.5 J 4.6 J 4.1 J ND ug/L 10/11/10 1.5 -- 100 -- ND ND ND ND ND ug/L 05/12/11 1.2 -- 100 9.7 J 7.5 J ND ND ND ND ug/L 10/07/11 1.2 -- 100 ND ND ND ND ND ND ug/L 04/19/12 1.2 -- 100 ND ND ND ND ND ND ug/L 10/26/12 1.2 -- 100 ND 4.4 J ND ND ND ND ug/L 04/25/13 0.96 -- 100 1.0 J 1.0 J ND ND 1.6 J ND ug/L 09/12/13 1.2 -- 100 ND ND ND ND ND ND ug/L 04/25/14 1.2 -- 100 ND ND ND ND ND ND ug/L 10/02/14 1.2 -- 100 ND ND ND ND ND ND ug/L 04/06/15 1.2 -- 100 ND ND ND ND ND ND ug/L 10/07/15 1.2 -- 100 ND ND ND ND ND ND ug/L 04/20/16 1.2 -- 100 ND ND ND ND ND ND ug/L 09/26/16 10 -- 100 ND 11 J ND ND 11 J ND ug/L 04/28/17 10 -- 100 23 B 19 B 19 B 36 B 16 B 33 J ug/L 10/17/17 10 -- 100 ND ND ND ND ND ND ug/L 04/16/18 10 -- 100 ND ND ND ND ND ND ug/L 10/18/18 10 20 -- ND ND ND ND ND ND ug/L 04/12/19 10 20 -- ND ND ND ND ND ND ug/L 10/08/19 10 20 -- ND ND ND ND ND ND ug/L 04/20/20 10 20 -- ND ND ND ND ND ND Chloroform ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /01 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 5 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- 0.16 0.16 2.5 J 0.69 J 0.6 J ND ug/L 09/25/07 -- -- -- 0.37 J ND 8.4 1.2 J 1.2 J ND ug/L 05/05/08 0.2 -- 5 -- ND ND ND ND ND ug/L 12/04/08 0.2 -- 5 -- 0.2 0.58 J 0.2 0.2 ND ug/L 04/13/09 0.2 -- 5 -- ND ND ND ND ND ug/L 10/20/09 0.2 -- 5 ND ND 2.4 J 2.1 J 1.3 J ND ug/L 04/30/10 0.083 -- 5 -- ND 1.8 J ND ND ND ug/L 10/11/10 0.2 -- 5 -- 0.2 7.4 2.0 J 2.0 J ND ug/L 05/12/11 0.7 -- 5 ND ND ND J ND ND ND ug/L 10/07/11 0.7 -- 5 ND ND 2.4 J 0.92 J 1.1 J ND ug/L 04/19/12 0.18 -- 5 ND ND 1.0 J 0.45 J ND ND ug/L 10/26/12 0.18 -- 5 ND ND 1.2 J ND ND ND ug/L 04/25/13 0.25 -- 5 ND ND 0.51 J ND ND ND ug/L 09/12/13 0.18 -- 5 ND ND 1.8 J 0.76 J 0.76 J ND ug/L 04/25/14 0.18 -- 5 1.6 J ND 1.7 J 0.46 J 0.58 J ND ug/L 10/02/14 0.18 -- 5 1.2 J ND 0.95 J 1.0 J ND ND ug/L 04/06/15 0.18 -- 5 ND ND 0.49 J ND ND ND ug/L 10/07/15 0.18 -- 5 ND ND 2.4 J 0.92 J 1.0 J ND ug/L 04/20/16 0.18 -- 5 ND ND ND ND ND ND ug/L 09/26/16 0.18 -- 5 ND ND 1.6 J ND ND ND ug/L 04/28/17 0.18 -- 5 ND ND ND ND ND ND ug/L 10/17/17 0.18 -- 5 ND ND ND ND ND ND ug/L 04/16/18 0.18 -- 5 ND ND ND ND ND ND ug/L 10/18/18 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.18 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.18 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.18 1.0 -- ND ND ND ND ND ND Dibromochloromethane ug/L 03/01/00 -- -- 5 ND ND ND ND ND ND No SW Standard ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 5 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND 0.54 J ND ND ND ug/L 09/25/07 -- -- -- ND ND 2.8 J ND ND ND ug/L 05/05/08 0.28 -- 3 -- ND ND ND ND ND ug/L 12/04/08 0.32 -- 3 -- ND ND ND ND ND ug/L 04/13/09 0.32 -- 3 -- ND ND ND ND ND ug/L 10/20/09 0.32 -- 3 ND ND ND ND ND ND ug/L 04/30/10 0.067 -- 3 -- ND ND ND ND ND ug/L 10/11/10 0.32 -- 3 -- 0.32 6.6 1.2 J 4.6 ND ug/L 05/12/11 0.63 -- 3 ND ND ND ND ND ND ug/L 10/07/11 0.63 -- 3 ND ND ND ND ND ND ug/L 04/19/12 0.17 -- 3 ND ND ND ND ND ND ug/L 10/26/12 0.17 -- 3 ND ND ND ND ND ND ug/L 04/25/13 0.49 -- 3 ND ND ND ND ND ND ug/L 09/12/13 0.17 -- 3 ND ND ND ND ND ND ug/L 04/25/14 0.17 -- 3 ND ND ND ND ND ND ug/L 10/02/14 0.17 -- 3 ND ND ND ND ND ND ug/L 04/06/15 0.17 -- 3 ND ND ND ND ND ND ug/L 10/07/15 0.17 -- 3 ND ND ND ND ND ND ug/L 04/20/16 0.17 -- 3 ND ND ND ND ND ND ug/L 09/26/16 0.17 -- 3 ND ND ND ND ND ND ug/L 04/28/17 0.17 -- 3 ND ND ND ND ND ND ug/L 10/17/17 0.17 -- 3 ND ND ND ND ND ND ug/L 04/16/18 0.17 -- 3 ND ND ND ND ND ND ug/L 10/18/18 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.17 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.17 1.0 -- ND ND ND ND ND ND 1,4-D ichlorobenzene 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 uq/L 04/01 /06 -- __ 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.2 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.38 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.38 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.38 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.1 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.79 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.79 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.19 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.19 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.14 -- 1 ND ND 0.46 J ND 0.19 J ND ug/L 09/12/13 0.19 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.19 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.19 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.19 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.19 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.19 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.19 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.19 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.19 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.19 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.19 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.19 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.19 1.0 -- ND ND ND ND ND ND C hloromethane ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01/01 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /01 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /02 -- -- 10 ND ND ND ND ND ND ug/L 09/01/02 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.23 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.34 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.34 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.34 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.05 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.34 -- 1 -- 0.82 B 0.34 0.34 B 0.62 B 0.43 J ug/L 05/12/11 0.55 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.55 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.13 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.13 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.44 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.13 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.13 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.13 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.13 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.13 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.13 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.13 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.13 -- 1 0.42 J ND ND 0.78 J 0.41 J ND ug/L 10/17/17 0.13 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.13 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.13 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.13 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.13 1.0 -- ND ND ND ND ND ND (30 GOLDER 4of5 July 2020 19131339.101 TABLE 6 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 Monitoring Points (SW Standard) Units Date Detection Quanitation Reporting Blanks Limit Limit Limit SW-1 SW-2 SW-3 SW-4 SW-5 Methylene Chloride ug/L 03/01/00 -- -- 10 ND ND ND ND ND ND No SW Standard ug/L 09/01/00 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /01 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /01 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /02 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 10 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 10 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 10 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 10 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.24 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.53 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.53 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.53 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.07 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.53 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.14 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.14 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.23 -- 1 ND ND ND ND ND ND ug/L 10/26/12 0.23 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.5 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.23 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.23 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.23 -- 1 ND ND ND ND 0.77 J ND ug/L 04/06/15 0.23 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.23 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.23 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.23 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.23 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.23 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.23 1.0 -- ND ND ND ND ND 0.73 J ug/L 10/08/19 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.23 1.0 -- ND ND ND ND ND ND Trichloroethene ug/L 03/01 /00 -- -- 5 ND ND ND ND ND ND SW Standard ug/L 09/01/00 -- -- 5 ND ND ND ND ND ND Human Health = 30 ug/L ug/L 03/01/01 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /01 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /02 -- -- 5 ND ND ND ND ND ND ug/L 04/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /03 -- -- 5 ND ND ND ND ND ND ug/L 03/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 09/01 /04 -- -- 5 ND ND ND ND ND ND ug/L 05/01 /05 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /05 -- -- 5 ND ND ND ND ND ND ug/L 04/01 /06 -- -- 5 ND ND ND ND ND ND ug/L 10/01 /06 -- -- 5 ND ND ND ND ND ND ug/L 04/10/07 -- -- -- ND ND ND ND ND ND ug/L 09/25/07 -- -- -- ND ND ND ND ND ND ug/L 05/05/08 0.25 -- 1 -- ND ND ND ND ND ug/L 12/04/08 0.38 -- 1 -- ND ND ND ND ND ug/L 04/13/09 0.38 -- 1 -- ND ND ND ND ND ug/L 10/20/09 0.38 -- 1 ND ND ND ND ND ND ug/L 04/30/10 0.13 -- 1 -- ND ND ND ND ND ug/L 10/11/10 0.38 -- 1 -- ND ND ND ND ND ug/L 05/12/11 0.72 -- 1 ND ND ND ND ND ND ug/L 10/07/11 0.72 -- 1 ND ND ND ND ND ND ug/L 04/19/12 0.15 -- 1 ND ND 0.69 J ND ND ND ug/L 10/26/12 0.15 -- 1 ND ND ND ND ND ND ug/L 04/25/13 0.23 -- 1 ND ND ND ND ND ND ug/L 09/12/13 0.15 -- 1 ND ND ND ND ND ND ug/L 04/25/14 0.15 -- 1 ND ND ND ND ND ND ug/L 10/02/14 0.15 -- 1 ND ND ND ND ND ND ug/L 04/06/15 0.15 -- 1 ND ND ND ND ND ND ug/L 10/07/15 0.15 -- 1 ND ND ND ND ND ND ug/L 04/20/16 0.15 -- 1 ND ND ND ND ND ND ug/L 09/26/16 0.15 -- 1 ND ND ND ND ND ND ug/L 04/28/17 0.15 -- 1 ND ND ND ND ND ND ug/L 10/17/17 0.15 -- 1 ND ND ND ND ND ND ug/L 04/16/18 0.15 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/12/19 0.15 1.0 -- ND ND ND ND ND ND ug/L 10/08/19 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/20/20 0.15 1.0 -- ND ND ND ND ND ND 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 3.0 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 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 Tetrahydrofuran ug/L 04/20/16 0.8 -- -- ND ND ND ND ND ND No SW standard ug/L 09/26/16 0.8 -- -- ND ND ND ND ND ND ug/L 04/28/17 0.17 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.53 1.0 -- -- -- -- -- -- ND ug/L 04/12/19 0.53 1.0 -- -- -- -- -- ND NC ug/L 10/08/19 0.53 1.0 -- -- -- -- -- ND NC Notes: B = blank -qualified data Shaded = concentrations above acute standards are shaded Bold = concentrations above chronic standards are bolded Data prior to April 2017 provided by 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 = NCPOL prior to 2007 and NCSWSL starting on 01/18/07 -- = no data available or no limit established NC 2L = North Carolina Water Quality Standard ND = not detected above the laboratory detection limit or stated reporting limit J = Prior to the November 2018 event, J flags are estimated values below the SWS Reporting limit. Beginning with the November 2018 event, J flags are estimated values between MDL and PQL. The following dilutions were noted for the October 2020 event: antimony, selenium, and thallium by 2x (all points) Laboratory method blank data was unavailable for data prior to April 2017. However, B flags for the 04/16/09, 10/07/09, and 10/11/10 were present on laboratory electronic files. (30 GOLDER 5of5 July 2020 19131339.101 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 Specific Conductance (Field) uS/= 03/25/99 347 155 309 -- -- uS/= 09/23/99 811 123 487 -- -- uS/= 03/27/00 417 186 363 318 315 uS/= 09/13/00 303 233 ND 471 438 uS/= 03/12/01 6919 6145 6145 6393 5960 uS/= 09/13/01 6919 7324 6063 6393 5960 uS/= 03/07/02 420 377 577 561 555 uS/= 09/18/02 248 271 -- 449 469 uS/= 04/15/03 74 254 261 345 325 uS/= 10/15/03 215 256 357 334 340 uS/= 03/24/04 293 253 410 378 379 uS/= 09/22/04 242 223 234 424 1 uS/= 05/10/05 283 271 391 387 390 uS/= 10/11/05 167 215 319 264 269 uS/= 04/24/06 195 182 335 286 404 uS/= 10/16/06 -- -- -- -- -- uS/= 04/10/07 31.9 28.9 43.6 42.9 43.5 uS/= 09/25/07 31.0 13.0 57.0 53.0 54.0 uS/= 05/02/08 -- -- -- -- -- uS/= 12/05/08 -- 31.6 32.6 31.1 29.1 uS/= 04/16/09 -- 19.8 23.8 26.5 24.9 uS/= 10/07/09 -- -- -- -- -- uS/= 04/28/10 -- -- -- -- -- uS/= 10/05/10 -- 27.9 54 38.9 35.7 uS/= 05/10/11 256 209 345 412 405 uS/= 10/06/11 309 218 529 462 446 uS/= 04/16/12 -- -- -- -- -- uS/= 10/24/12 -- -- -- -- -- uS/= 04/24/13 237 242 381 362 380 uS/= 09/09/13 327 266 461 439 448 uS/= 04/22/14 337 275 430 375 420 uS/= 10/01 /14 276 228 454 444 441 uS/= 04/07/15 318 255 400 378 423 uS/= 10/06/15 229 151 337 299 284 uS/= 04/18/16 254 183 313 307 300 uS/= 09/26/16 293 214 439 412 427 uS/= 04/25/17 211 198 318 272 1272 uS/= 10/16/17 209 171 211 241 263 uS/= 04/16/18 233 215 234 217 227 uS/= 10/18/18 191 264 159 209 254 uS/= 04/08/19 129 210 158 270 248 uS/= 10/07/19 308 219 290 320 325 uS/= 04/20/20 189 212 194 192 197 ,,> GOLDER 1of2 July 2020 19131339.101 I r_1--I I =W/ 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 SWA 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 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 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 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 m /L 04/20/20 9.06 9.38 9.07 7.65 7.07 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 2of2 Figures 3 LY c� co a N 00 00 a N V E m z FL N_ L _N Q a U g 3 0 Q E Y 0 U a SW-3 LOCATED —1600 FT. WEST —49UU F I . VVE6 I SW-2 LOCATED —500 FT. WEST CLIENT CITY OF GREENSBORO CONSULTANT MSW LANDFILL LIMITS OF WASTE YYYY-M M-D D DESIGNED LD E R PREPARED REVIEWED GOLDER ASSOCIATES NC, INC APPROVED SW-4 LOCATED —900 FT. EAST 2020-06-12 NTT HAC DYR RPK LEGEND O O �-1 NM PL 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 STREAMS MINOR CONTOURS (2 FT. INTERVAL) MAJOR CONTOURS (10 FT. INTERVAL) APPROXIMATE LIMITS OF WASTE APPROXIMATE PROPERTY LINE NOTES 1. TOPOGRAPHIC CONTOUR INTERVAL = 10 FEET. 2. GROUNDWATER SURFACE CONTOUR INTERVAL = 2 FEET. 3. GROUNDWATER ELEVATIONS MEASURED ON APRIL 20-22, 2020. 4. GROUNDWATER CONTOURS ARE BASED ON LINEAR INTERPOLATION BETWEEN AND EXTRAPOLATION FROM KNOWN DATA, TOPOGRAPHIC CONTOURS, AND KNOWN FIELD CONDITIONS. THEREFORE, GROUNDWATER CONTOURS MAY NOT REFLECT ACTUAL GROUNDWATER CONDITIONS. 5. GROUNDWATER CONTOUR LINES SHOW THE WATER TABLE SHAPE AND ELEVATION. THESE CONTOURS ARE INFERRED LINES FOLLOWING THE GROUNDWATER SURFACE AT A CONSTANT ELEVATION ABOVE SEA LEVEL. THE GROUNDWATER FLOW DIRECTION IS GENERALLY PERPENDICULAR TO THE GROUNDWATER SURFACE CONTOURS, SIMILAR TO THE RELATIONSHIP BETWEEN SURFACE WATER FLOW AND TOPOGRAPHIC CONTOURS. 6. ELEVATIONS SHOWN IN THIS DRAWING ARE IN FEET ABOVE MEAN SEA LEVEL DATUM ("MEAN SEA LEVEL DATUM" REFERS TO THE NATIONAL GEOTETIC VERTICAL DATUM (NGVD) OF 1929) AND COORDINATES ARE EXPRESSED IN TERMS OF THE STATE PLANE COORDINATE SYSTEM. 7. SURFACE WATER LOCATIONS ARE APPROXIMATE. 8. TOPOGRAPHY PROVIDED BY BRADY SURVEYING CO. FROM AERIAL PHOTOGRAPHY DATED NOVEMBER 9, 1994 FACILITY AREA UPDATED MAY 18, 1996. 9. 7.5 MINUTE USGS QUADRANGLE, MCLEANSVILLE, NORTH CAROLINA, 2016. r, \ If , Jk SITE LOCATION MAP NOT TO SCALE 0 400 800 1" = 400' FEET PROJECT WHITE STREET LANDFILL CITY OF GREENSBORO GREENSBORO, NORTH CAROLINA TITLE GROUNDWATER SURFACE CONTOUR MAP APRIL 20-22, 2020 PROJECT NO. PHASE FIGURE 19131339 101 0 L c L c L L C L r c F L L C L F C LEGEND ❑ SW-1 SURFACE WATER MONITORING POINT ,ate' '�1.''•.. � _ r sri CLIENT CITY OF GREENSBORO 6, ULJIUN CU xr GO L D E R PREPARED SEP REVIEWED DYR GOLDER ASSOCIATES NC, INC. APPROVED RPK 1 NOTES 1. SURFACE WATER LOCATIONS ARE APPROXIMATE. 2. 7.5 MINUTE USGS QUADRANGLE, MCLEANSVILLE, NORTH CAROLINA, 2016. SITE LOCATION MAP NOT TO SCALE o 0 0 1500 3000 1" = 1500' FEET PROJECT WHITE STREET LANDFILL CITY OF GREENSBORO GREENSBORO, NORTH CAROLINA TITLE SURFACE WATER LOCATION MAP PROJECT NO. FIGURE 166842117 0 2 APPENDIX A Groundwater and Surface Water Sampling Logs GOLDER Project Name: Well ID: Well Diameter: White Street Landfill 2 inches Depth to Bottom: ").q ,()O feet Pumping Rate: V_Z5 mUrnin. DATE.. Lt-2/- 2c�0 GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): T. Martinez Initial Depth to Water: C4. 40 feet Water Column Thickness: � 4 feet System Volume: ?7S m( Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated Bladder Pump, MP-15 — �M! (US/cm) (millivolts) Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purge at 107,L4 Signature: bate: QA1QC Sign Off: '�1ti ;y ,lC 24Date: & _ i "Z< 16> GOLDER Project Name: Well ID: Well Diameter: - Depth to Bottom: Pumping Rate: White Street Landfill i- 2 inches _.y .00 feet 0 mLlmin. DATE: (4-ZI-26 2 <) GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s), T. Martinez Initial Depth to Water: 11+ feet - 5 Y Water Column Thickness: 1 feet System Volume: 87 5 Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated Bladder Pump, MP- 15 - Time pH (S.U.) Sp. Cond. (us/cm) Turb (NTU) Dis 02 (m91L) Temp. CC) ORP (millivolts) DTW (feet) -2069 A.3 [ . 1 L - -7 , Wb S '10,15 S, i,7 14,2 � . I D .{] 7n7h 1u_r P �5d 6.15 1141 .6Z 114. -7,I 00.II? 0it) 5 -2. 1L1. 1 - cr.07 0910 b 41 10-77 3�, Z. ' 0 14.1 � � 9.1 ' �� 2, t i + ` [ 1 111yZ �% ri. 40 b D Z6q 4 3z, -09 1, 9.35 251>'-Lo tj1LI 3'2 Z,I 14, N Y9 o 3 a s 3 �. x �r s �- 3.7 { [7 S 6.31 70 9. c>5 4,5 - 9 cf. 6 0940 9lq 31,51,110 tLl 9.7 0� 50 o . r Cf. tc.): Comments (weather conditions, color, type of sample, pur a -water page7-W Begin purge at DRY I G g r4,1MI 401 l �aoxq� Signature: QA1QC Sign Off: Date: Date: 4 4'��'i- a GOLDER Project Name: Well ID: _ Well Diameter: Depth to Bottom: Pumping Rate: White Street Landfill 2 inches TA 3 feet Z 15 MI-Inlin. DATE: Lt_ 7/ -7G 26 GROUNDWATER SAMPLING LOG Project No.lPhase No.: 1668421 Sampler(s): T. Martinez Initial Depth to Water: 7-153 feet Water Column Thickness: 11,47 feet System Volume: �?79 ML Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated Bladder Pump, MP-15 Sp. Cond. Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin purQe atLf Signature: �j Date: QAIQC Sign Off: Date: (a —ry Zoo) 'vyth0-1 w, T2,04,JN GOLDER Project Name: Well ID: _ Well Diameter: Depth to Bottom: Pumping Rate: White Street Landfill 2 inches I S •O O feet �►i74�r'Du mLlmin. DATE: L(. Z ( - 2-6 -2 Cj GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 Sampler(s): T. Martinez Initial Depth to Water: Z -t C) feet Water Column Thickness: 12,10 feet System Volume: -7SQ ML Equipment: Turbidimeter, YSl ProPlus, WL Meter Dedicated Bladder Pump, MP- f 5 ® • Cond. ® ' ■ •*• Comments (weather conditions, color, type of sample, r e-water managemen , etc.): Begin purge at C,•Atet }'c�{ + �yxm - I-Prd AAA S g'-"tk Signature: Date: - !' -Lp QA1QC Sign Off; e�, u �-- Date: GOLDER Project Name: Well ID: Well Diameter: Depth to Bottom: Pumping Rate: White Street Landfill Mw-1 � 2 inches 100 feet 1 5 mLlmin. DATE: V - ?c-2c GROUNDWATER SAMPLING LOG Project No./Phase No.: 1668421 5ampler(s): T. Martinez -- Initial Depth to Water: le.�Y feet Water Column Thickness: 15.6-?_ feet System Volume: ! O 7 -?, >Ml. Equipment: Turbidimeter, M ProPlus, WL Meter Dedicated Bladder Pump, MP-15 Time pH (S.U.) Sp. Cond, uS/cm) Turb (NTU) Dis 02 (mglL) Temp. (°C) ORP (millivolts) DTW (feet) L1�l I'� 5I Ll Y'U 1.52 y o IS'q 'YT 1 S 5 t b 2 0 `7 1 1;, 4 PT P-16 ,I Z-7 S P 7G 19, S 1 2 E,�, Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge at ) I/)o 5 Signature: Date: Ll- lel- 2e 0 QA1QC Sign Off: !(��.c., U �� Date; __ - j �- ZaI- GOLDER DATE: y - 2 2 -Lz- 20 SURFACE WATER SAMPLING LOG Project Name: White Street LF Project No./Phase No,: Sample ID: SLv - l Sampler(s): 447 to Sampling Location: 04-f r* GI'JSsmcl �-M-v T Equipment: YSI, Turbidimeter T� Time M 3 pH s.u. 001 Sp. Cond. us/cm Turb. ntu Dis. Op mg/L Temp. PC ORP mV I71 ,1 1668421 %b{Yrts 7-- s Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.).- Signature- t Date: QAIQC Sign Off: - Date: . Z-5'_ �~, GOLDER DATE: `7 -2 2 -�, c SURFACE WATER SAMPLING LOG Project Name: White Street LF Project No,/Phase No.: 1668421 Sample ID: SC", - Z Sampler(s): "r_ �, z . 7eft�{ 7617Y 5 Sampling Location: ur-t1., SA Of Wkllk- S-T" Equipment: YSI, Turbidimeter Time 1451 pH S.U. :qb Sp. Cond. u51cm Turb. ntu D'S- 02 mg1L 939 Temp. uc lC� L J.1 ORP my -7, -7 Surface Water Sampling Location Sketch r Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QAIQC Sign Off: Date: Lf - 2- 2 - 2C,ZG Date: & zs -zU GOLDER DATE; 2 - 2-c, 2. 0 SURFACE WATER SAMPLING LOG Project Name: White Street LF Project No./Phase No.: 1668421 Sample ID:U. •3 Sampier(s): '7f-jC,;Ie, Sampling Location; _,ror ifYr�� uFSfrcr,N+ ref ��rm Equipment: YSI, Turbidimeter ,cl,3f,�-Ak Time ) S j5 pH S.U. 7 7-2 Sp. Cond. US/cm 4 Turb. ntu V71 Dis.O2 mg1L Temp. ac r] fJ� r�•j` ! V - 1 ORP mv Surface Water Sampling Location Sketch 011-T D", ol:-,- Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QAIQC Sign Off: Date: L(R Z G -2-b Date: 6__2-5 - �& z e DATE: L'l - a Z G O L D E R SURFACE WATER SAMPLING LOG Project Name: White Street LF Project NodPhase No.: 1668421 Sample ID: — • 4 Sampler(s); IV 'Te -e,�,o.r _ frr.3 ;r, Sampling Location: B S d junk. M:14 ; Equipment: YSI, Turbidimeter Time ( �oo S.U.pH �,5' Sp. Cond. US/cm Tu rb. ntu y Dis. 02 mg1L Temp.. aC ORP my Surface Water Sampling Location Sketch ° W-' k S -t t F Comments (sample methodology, weather conditions, color, silt, etc.): ".-l-L- q - 2 :�' . Z" Signature: Date: QAIQC Sign Off: ©ate: r' N T DATE: u` 2 2 - 2( a G O L D E R SURFACE WATER SAMPLING LOG Project Name: Waite Street LF Project No./Phase No.: 1668421 Sample ID: SLv - 5 Sampler(s): _ /t'[G, """e z Sampling Location: Equipment: YSI, Turbidimeter Surface Water Sampling Location Sketch Time pH SM. —7 7 Sp. Cond. us/cm t 9'7 , 4 Turb.• ntu Dis. 02 mg/L ro7 Temp. C 4 ORP my �•7r Comments (sample methodology, weather conditions, color, silt, etc.): N L -2 2 a Signature: — — Date: ..�. k-k --. QAfQC Sign Off: `} �.�..' �,�� Date: APPENDIX B April 2020 Groundwater Certificates -of -Analysis, Chain -of - Custody Forms and Laboratory Data Reviews ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Wednesday, June 17, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.106, Project Name/Desc: White Street LF-Phase I,II ENCO Workorder(s): CD06347 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Thursday, April 23, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Daniel B. Mays 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: 17 June 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11 Lab ID: CD06347 Overview (� �Eo www.encolabs.com This report is an amendment to the original report dated May 13, 2020 for this work order. This report was revised, at the client's request, to only report selenium by EPA method 601 OD. 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 QV-01 was appended to sample SW-5 for analyses 1,4-Dioxane, Bromochloromethane, Carbon tetrachloride, Chloroform, and Dibromomethane because the associated continuing calibration verification standard exhibited high bias; since the result is non -detect for the analyte there is no impact on data quality. 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. Daniel Mays 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 14 (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4103-SWS Lab ID: CD06347-01 Sampled: 04/22/20 13:35 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:40 05/07/20 17:10 EPA 6020E EPA 3005A 10/19/20 04/24/20 10:38 04/28/20 15:57 EPA 8260D EPA 503013_MS 05/06/20 04/27/20 00:00 04/27/20 14:58 EPA 8260D EPA 503013_MS 05/06/20 05/04/20 15:59 05/05/20 07:45 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 14 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4103-SWS Lab ID: CD06347-01 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 0.91 J 0.80 2.0 ug/L EPA 8260D Barium - Total 40.5 1.10 10.0 ug/L EPA 6010D Copper - Total 4.63 J 1.60 10.0 ug/L EPA 6010D Vanadium - Total 1.85 J 1.40 10.0 ug/L EPA 6010D Xylenes (Total) 1.5 J 0.45 3.0 ug/L EPA 8260D Zinc - Total 10.1 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 14 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-SW5 Lab Sample ID:CDO6347-01 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 13:35 Work Order: CD06347 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,1-Dichloroethane [75-34-3]A 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,1-Dichloroethene [75-35-4]A 0.21 U ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,2,3-Trichloropropane [96-18-4]A 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,2-Dibromo-3-chloropropane [96-12-8]A 0.48 U ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,2-Dibromoethane [106-93-4]A 0.66 U ug/L 1 0.66 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,2-Dichlorobenzene [95-50-1]A 0.19 U ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,2-Dichloroethane [107-06-2]A 0.21 U ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,2-Dichloropropane [78-87-5]A 0.10 U ug/L 1 0.10 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 1,4-Dichlorobenzene [106-46-7]A 0.19 U ug/L 1 0.19 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 4-Methyl-2-pentanone [108-10-1]A 1.1 U ug/L 1 1.1 5.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OE04039 EPA 8260D 05/05/20 07:45 CMK Acrylonitrile [107-13-1]A 3.5 U ug/L 1 3.5 10 OE04039 EPA 8260D 05/05/20 07:45 CMK Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK QV-01 Bromodichloromethane [75-27-4]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Bromoform [75-25-2]A 0.22 U ug/L 1 0.22 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Carbon disulfide [75-15-O]A 1.5 U ug/L 1 1.5 5.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK QV-01 Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Chloroform [67-66-3]A 0.18 U ug/L 1 0.18 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK QV-01 Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK cis-1,2-Dichloroethene [156-59-2]A 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Iodomethane [74-88-4]A 1.7 U ug/L 1 1.7 5.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Toluene [108-88-3]A 0.14 U ug/L 1 0.14 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK trans-1,2-Dichloroethene [156-60-5]A 0.21 U ug/L 1 0.21 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK trans-1,3-Dichloropropene [10061-02-6]A 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Trichloroethene [79-01-6]A 0.15 U ug/L 1 0.15 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Trichlorofluoromethane [75-69-4]A 0.24 U ug/L 1 0.24 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Vinyl chloride [75-01-4]A 0.32 U ug/L 1 0.32 1.0 OE04039 EPA 8260D 05/05/20 07:45 CMK Xylenes (Total) [1330-20-7]A 1.5 J ug/L 1 0.45 3.0 OE04039 EPA 8260D 05/05/20 07:45 CMK 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-SW5 Lab Sample ID:CD06347-01 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 13:35 Work Order: CD06347 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 49 1 50.0 99 % 53-136 OE04039 EPA 826OD 05105120 07:45 CMK Dibromofluoromethane 47 1 50.0 94 % 67-129 OE04039 EPA 826OD 05105120 07:45 CMK Toluene-d8 45 1 50.0 90 % 59-134 OE04039 EPA 626OD 05105120 07:45 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24022 EPA 6020B 04/28/20 15:57 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Barium [7440-39-3]^ 40.5 ug/L 1 1.10 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27010 EPA 6010D 05/07/20 17:10 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27010 EPA 6010D 05/07/20 17:10 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Copper[7440-50-8]^ 4.63 J ug/L 1 1.60 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24022 EPA 6020B 04/28/20 15:57 RLF Vanadium [7440-62-2]^ 1.85 J ug/L 1 1.40 10.0 OD27010 EPA 6010D 05/07/20 17:10 JDH Zinc[744O-66-6]^ 10.1 ug/L 1 4.40 10.0 OD27010 EPA 6010D 05/07/20 17:10 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 Ay Notes 1,4-Dioxane [123-91-1]^ 0.91 J ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 14:58 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.2 1 5.00 104 % 75-125 OD27030 EPA 8260D 0412712014:58 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 OEO4O39 - EPA 5030E MS Blank (OE04039-BLK1) Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 01:50 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 48 u9/L 50.0 96 53-136 Dibromofluoromethane 47 u9/L 50.0 93 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 OEO4O39 - EPA 5030E MS - Continued (� �Eo www.encolabs.com Blank (OE04039-BLK1) Continued Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 01:50 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 47 u9/L 50.0 94 59-134 LCS (OE04039-BS1) Prepared: 05/04/2020 15:59 Analyzed: 05/04/2020 23:41 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 23 1.0 ug/L 20.0 117 75-133 Benzene 21 1.0 ug/L 20.0 103 80-134 Chlorobenzene 19 1.0 ug/L 20.0 95 80-120 Toluene 18 1.0 ug/L 20.0 89 71-120 Trichloroethene 22 1.0 ug/L 20.0 108 74-120 Matrix Spike (OE04039-MS1) Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 00:13 Source: CD06682-13 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 26 1.0 ug/L 20.0 0.21 U 128 75-133 Benzene 21 1.0 ug/L 20.0 0.15 U 107 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 94 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 94 71-120 Trichloroethene 23 1.0 ug/L 20.0 0.15 U 116 74-120 Matrix Spike Dup (OE04039-MSD1) Prepared: 05/04/2020 15:59 Analyzed: 05/05/2020 00:45 Source: CD06682-13 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 106 75-133 19 20 Benzene 20 1.0 ug/L 20.0 0.15 U 100 80-134 7 17 Chlorobenzene 17 1.0 ug/L 20.0 0.17 U 87 80-120 8 16 Toluene 17 1.0 ug/L 20.0 0.14 U 85 71-120 10 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 103 74-120 12 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O22 - EPA 3OO5A Blank (OD24022-BLK1) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:06 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (OD24022-BSI) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:11 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.4 1.00 ug/L 20.0 107 80-120 Selenium 19.1 1.00 ug/L 20.0 95 80-120 Thallium 21.1 1.00 ug/L 20.0 105 80-120 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 4 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O22 - EPA 3OO5A - Continued Matrix Spike (OD24022-MS3) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:15 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.8 2.00 ug/L 40.0 0.740 U 107 75-125 Selenium 40.8 2.00 ug/L 40.0 1.82 U 102 75-125 Thallium 42.3 2.00 ug/L 40.0 0.220 U 106 75-125 Matrix Spike Dup (OD24022-MSDS) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:19 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.6 2.00 ug/L 40.0 0.740 U 107 75-125 0.4 20 Selenium 41.4 2.00 ug/L 40.0 1.82 U 103 75-125 1 20 Thallium 42.0 2.00 ug/L 40.0 0.220 U 105 75-125 0.5 20 Post Spike (OD24022-PS1) Prepared: 04/24/2020 10:38 Analyzed: 04/28/2020 14:24 Source: CD01673-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 22.9 1.00 ug/L 20.0 0.0779 114 75-125 Selenium 21.1 1.00 ug/L 20.0-0.0151 105 75-125 Thallium 22.7 1.00 ug/L 20.0 0.0450 113 75-125 Batch OD27O1O - EPA 3OO5A Blank (OD27010-BLK1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:41 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 (OD27030-BS1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:46 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits Arsenic 193 10.0 ug/L 200 97 80-120 Barium 190 10.0 ug/L 200 95 80-120 Beryllium 18.6 1.00 ug/L 20.0 93 80-120 Cadmium 19.2 1.00 ug/L 20.0 96 80-120 Chromium 185 10.0 ug/L 200 93 80-120 Cobalt 195 10.0 ug/L 200 98 80-120 Copper 186 10.0 ug/L 200 93 80-120 Lead 192 10.0 ug/L 200 96 80-120 RPD RPD Limit Notes 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 OD27O1O - EPA 3OO5A - Continued LCS (OD27010-BSI) Continued Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:46 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nickel 188 10.0 ug/L 200 94 80-120 Selenium 194 10.0 ug/L 200 97 80-120 Silver 188 10.0 ug/L 200 94 80-120 Vanadium 184 10.0 ug/L 200 92 80-120 Zinc 193 10.0 ug/L 200 97 80-120 Matrix Spike (OD27030-MS1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:48 Source: CD01673-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 183 10.0 ug/L 200 7.60 U 91 75-125 Barium 381 10.0 ug/L 200 200 90 75-125 Beryllium 22.0 1.00 ug/L 20.0 3.44 93 75-125 Cadmium 18.8 1.00 ug/L 20.0 0.360 U 94 75-125 Chromium 183 10.0 ug/L 200 1.40 U 92 75-125 Cobalt 192 10.0 ug/L 200 1.40 U 96 75-125 Copper 183 10.0 ug/L 200 1.60 U 91 75-125 Lead 190 10.0 ug/L 200 3.10 U 95 75-125 Nickel 184 10.0 ug/L 200 2.20 U 92 75-125 Selenium 194 10.0 ug/L 200 6.20 U 97 75-125 Silver 184 10.0 ug/L 200 1.90 U 92 75-125 Vanadium 183 10.0 ug/L 200 1.40 U 91 75-125 Zinc 193 10.0 ug/L 200 4.40 U 97 75-125 Matrix Spike Dup (OD27010-MSD1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:51 Source: CD01673-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 190 10.0 ug/L 200 7.60 U 95 75-125 4 20 Barium 387 10.0 ug/L 200 200 93 75-125 2 20 Beryllium 22.3 1.00 ug/L 20.0 3.44 94 75-125 1 20 Cadmium 19.2 1.00 ug/L 20.0 0.360 U 96 75-125 2 20 Chromium 186 10.0 ug/L 200 1.40 U 93 75-125 2 20 Cobalt 196 10.0 ug/L 200 1.40 U 98 75-125 2 20 Copper 186 10.0 ug/L 200 1.60 U 93 75-125 2 20 Lead 194 10.0 ug/L 200 3.10 U 97 75-125 2 20 Nickel 187 10.0 ug/L 200 2.20 U 93 75-125 1 20 Selenium 191 10.0 ug/L 200 6.20 U 95 75-125 2 20 Silver 186 10.0 ug/L 200 1.90 U 93 75-125 1 20 Vanadium 186 10.0 ug/L 200 1.40 U 93 75-125 2 20 Zinc 199 10.0 ug/L 200 4.40 U 100 75-125 3 20 Post Spike (OD27010-PS1) Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:53 Source: CD01673-02 Spike Source Analvte Result Flaq POL Units Level Result %REC Arsenic 0.187 0.0100 mg/L 0.200 -0.00583 93 Barium 0.395 0.0100 mg/L 0.200 0.200 97 Beryllium 0.0231 0.00100 mg/L 0.0200 0.00344 98 Cadmium 0.0200 0.00100 mg/L 0.0200 -0.000201 100 Chromium 0.194 0.0100 mg/L 0.200 0.000281 97 %REC Limits RPD 80-120 80-120 80-120 80-120 80-120 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 10 Of 14 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD27O1O - EPA 3OO5A - Continued Post Spike (OD27010-PS1) Continued Prepared: 04/27/2020 09:40 Analyzed: 05/07/2020 16:53 Source: CD01673-02 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cobalt 0.206 0.0100 mg/L 0.200 0.000733 103 80-120 Copper 0.195 0.0100 mg/L 0.200 0.000500 97 80-120 Lead 0.202 0.0100 mg/L 0.200 0.00180 100 80-120 Nickel 0.194 0.0100 mg/L 0.200 -0.00177 97 80-120 Selenium 0.203 0.0100 mg/L 0.200 -0.00224 101 80-120 Silver 0.189 0.0100 mg/L 0.200 0.000553 94 80-120 Vanadium 0.194 0.0100 mg/L 0.200 0.000364 97 80-120 Zinc 0.200 0.0100 mg/L 0.200 0.00302 99 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD27O3O - EPA 5O3OB MS Blank (OD27030-BLK3) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 10:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 u 2.0 ug/L Toluene-d8 5.1 u91L 5.00 102 75-125 LCS (OD27030-BSI) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 09:21 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 97 80-133 Toluene-d8 4.9 u91L 5.00 96 75-125 Matrix Spike (OD27030-MS1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:14 Source: AD02710-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 95 80-133 Toluene-& 5.2 u91L 5.00 104 75-125 Matrix Spike Dup (OD27030-MSD1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:39 Source: AD02710-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 0.80 U 98 80-133 3 19 Toluene-& 4.9 u91L 5.00 98 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 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. 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 14 o a S a x v 0 w 3 o m m_ m x m r c v e [D ro CD o 2. m m c_n C L 3 i mN N m ° 3 m sv Er Q n a o Page 13 of 14 Sample Preservation Verification ENCO Cary Work Order. CD06347 Project: Client: Golder Associates. Inc. (00007) Project #: Logged In: 23-Apr-20 10:53 _ Logged By: Preservation Check Performed By: f CDO6347-01 White Street LF-Phase 1,11 1668421.106 John C King Date/Time Cont Type Pres (pH) PH Checked ! n Control pH Adjusted Daterrime Adjusted Reagent Used/Comments A 25OmLP+HNO3 <2 Y 1 N 1 NA Y N /` NA Rea ent Name ID 1 2 pH Strip ID: C (UFO Reagent Name ID 3 4 Reagent Name €D 5 6 C1ELMNTIPrsntlwko_PreservationCheck. rpt Page 14 of 14 WORK ORDER Printed: 5/13/2020 8:10:42AM CD06347 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Daniel B. Mays Project: White Street LF-Phase I,II Project Number: 1668421.106 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: John C King Date Received: 23-Apr-20 10:21 Logged In By: John C King Date Logged In: 23-Apr-20 10:53 Work Order Comments: C-2056 received at 0.7°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Tuesday, May 5, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.106, Project Name/Desc: White Street LF-Phase I,II ENCO Workorder(s): CDO5202 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Tuesday, April 21, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Daniel B. Mays 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 rJ PROJECT NARRATIVE Date: 5 May 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11 Lab ID: CD05202 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 Qualifying flag QL-02 was attached to samples 4103-MW13 for Bromochloromethane because the associated laboratory control sample exhibited high bias; since the result is ND, there is no impact on data quality. QM-07 was appended to the samples Matrix spike 1, Matrix spike duplicate 1, for analysis barium because the spike recovery was outside acceptable limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. QV-01 was appended to the sample 4103-MW13 for analyses 1,1,1-Trichloroethane, Acrylonitrile, Bromochloromethane, Chloroform, cis- 1,-Dichloroethene, Trichlorofluoromethane, Vinyl acetate, Tetrahydrofuran because the associated continuing calibration verification standard exhibited high bias; since the result is non -detect, there is no impact on data quality. 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. Daniel Mays 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 �rJ (� �Eo www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE Client ID: 4303-MW33 Lab ID: CD05202-01 Sampled: 04/20/20 16:26 Received: 04/21/20 12:30 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/17/20 04/22/20 13:51 04/27/20 10:19 EPA 6020E EPA 3005A 10/17/20 04/22/20 13:12 04/26/20 06:53 EPA 7470A EPA 7470A 05/18/20 04/23/20 12:50 04/24/20 16:57 EPA 8260D EPA 503013_MS 05/04/20 04/23/20 00:00 04/23/20 16:54 EPA 8260D EPA 503013_MS 05/04/20 04/28/20 16:05 04/28/20 20:51 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 15 (� �Eo www.encolabs.com SAMPLE DETECTION SUMMARY Client ID: 4303-MW33 Lab ID: CDO5202-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 98.9 1.10 10.0 ug/L EPA 6010D Vanadium - Total 4.15 J 1.40 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 15 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CD05202-01 Received: 04/21/20 12:30 Matrix: Ground Water Sampled:04/20/20 16:26 Work Order: CD05202 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK QV-01 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OD28029 EPA 8260D 04/28/20 20:51 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OD28029 EPA 8260D 04/28/20 20:51 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OD28029 EPA 8260D 04/28/20 20:51 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OD28029 EPA 8260D 04/28/20 20:51 CMK QV-01 Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK QL-02, QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OD28029 EPA 8260D Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OD28029 EPA 8260D Bromomethane [74-83-9]^ 0.14 U ug/L 1 0.14 1.0 OD28029 EPA 8260D Carbon disulfide [75-15-O]^ 1.5 U ug/L 1 1.5 5.0 OD28029 EPA 8260D Carbon tetrachloride [56-23-5]^ 0.17 U ug/L 1 0.17 1.0 OD28029 EPA 8260D Chlorobenzene [108-90-7]^ 0.17 U ug/L 1 0.17 1.0 OD28029 EPA 8260D Chloroethane [75-00-3]^ 0.23 U ug/L 1 0.23 1.0 OD28029 EPA 8260D Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OD28029 EPA 8260D Chloromethane [74-87-3]^ 0.13 U ug/L 1 0.13 1.0 OD28029 EPA 8260D cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OD28029 EPA 8260D cis-1,3-Dichloropropene [10061-01-5]^ 0.20 U ug/L 1 0.20 1.0 OD28029 EPA 8260D Dibromochloromethane [124-48-1]^ 0.17 U ug/L 1 0.17 1.0 OD28029 EPA 8260D Dibromomethane [74-95-3]^ 0.27 U ug/L 1 0.27 1.0 OD28029 EPA 8260D Ethylbenzene [100-41-4]^ 0.13 U ug/L 1 0.13 1.0 OD28029 EPA 8260D Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OD28029 EPA 8260D Methylene chloride [75-09-2]^ 0.23 U ug/L 1 0.23 1.0 OD28029 EPA 8260D Styrene [100-42-5]^ 0.11 U ug/L 1 0.11 1.0 OD28029 EPA 8260D Tetrachloroethene [127-18-4]^ 0.17 U ug/L 1 0.17 1.0 OD28029 EPA 8260D Tetrahydrofuran [109-99-9]^ 0.53 U ug/L 1 0.53 1.0 OD28029 EPA 8260D Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OD28029 EPA 8260D trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OD28029 EPA 8260D trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OD28029 EPA 8260D trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 U ug/L 1 0.70 1.0 OD28029 EPA 8260D Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OD28029 EPA 8260D Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OD28029 EPA 8260D Vinyl acetate [108-05-4]^ 0.95 U ug/L 1 0.95 5.0 OD28029 EPA 8260D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK 04/28/20 20:51 CMK QV-01 QV-01 QV-01 QV-01 04/28/20 20:51 CMK QV-01 04/28/20 20:51 CMK QV-01 Page 5 of 15 (� �Eo www.encolabs.com ANALYTICAL RESULTS Description: 4103-MW13 Lab Sample ID:CD05202-01 Received: 04/21/20 12:30 Matrix: Ground Water Sampled:04/20/20 16:26 Work Order: CD05202 Project: White Street LF-Phase I,II Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Analyte KAS Numberl Results Flaa Units DF MDL POLL Batch Method Analyzed AX Notes Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OD28029 EPA 8260D 04/28/20 20:51 CMK Xylenes (Total) [1330-20-7]^ 0.45 U ug/L 1 0.45 3.0 OD28029 EPA 8260D 04/28/20 20:51 CMK Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 48 1 50.0 97 % 53-136 OD28029 EPA 8260D 04126120 20:51 CMK Dibromofluoromethane 58 1 50.0 115 % 67-129 OD28029 EPA 8260D 04126120 20:51 CMK Toluene-d8 50 1 50.0 100 % 59-134 OD28029 EPA 8260D 04126120 20:51 CMK 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 Ay Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 OD23034 EPA 7470A 04/24/20 16:57 KAH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD22032 EPA 6020B 04/26/20 06:53 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Barium [7440-39-3]^ 98.9 ug/L 1 1.10 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD22034 EPA 6010D 04/27/20 10:19 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD22034 EPA 6010D 04/27/20 10:19 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD22032 EPA 6020B 04/26/20 06:53 RLF Vanadium [7440-62-2]^ 4.15 J ug/L 1 1.40 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Zinc[7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD22034 EPA 6010D 04/27/20 10:19 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OD23030 EPA 8260D 04/23/20 16:54 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.0 1 5.00 100 % 75-125 OD23030 EPA 8260D 0412312016:54 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 �rJ (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OD28O29 - EPA 5O3OB MS Blank (OD28029-BLK1) Prepared: 04/28/2020 15:05 Analyzed: 04/28/2020 18:15 Analvte Result Flaq POL Units 1,1,1,2-Tetrachloroethane 0.17 U 1.0 ug/L 1,1,1-Trichloroethane 0.12 U 1.0 ug/L 1,1,2,2-Tetrachloroethane 0.28 U 1.0 ug/L 1,1,2-Trichloroethane 0.14 U 1.0 ug/L 1,1-Dichloroethane 0.13 U 1.0 ug/L 1,1-Dichloroethene 0.21 U 1.0 ug/L 1,2,3-Trichloropropane 0.23 U 1.0 ug/L 1,2-Dibromo-3-chloropropane 0.48 U 1.0 ug/L 1,2-Dibromoethane 0.66 U 1.0 ug/L 1,2-Dichlorobenzene 0.19 U 1.0 ug/L 1,2-Dichloroethane 0.21 U 1.0 ug/L 1,2-Dichloropropane 0.10 U 1.0 ug/L 1,4-Dichlorobenzene 0.19 U 1.0 ug/L 2-Butanone 1.3 U 5.0 ug/L 2-Hexanone 0.88 U 5.0 ug/L 4-Methyl-2-pentanone 1.1 U 5.0 ug/L Acetone 10 U 20 ug/L Acrylonitrile 3.5 U 10 ug/L Benzene 0.15 U 1.0 ug/L Bromochloromethane 0.48 U 1.0 ug/L Bromodichloromethane 0.17 U 1.0 ug/L Bromoform 0.22 U 1.0 ug/L Bromomethane 0.14 U 1.0 ug/L Carbon disulfide 1.5 U 5.0 ug/L Carbon tetrachloride 0.17 U 1.0 ug/L Chlorobenzene 0.17 U 1.0 ug/L Chloroethane 0.23 U 1.0 ug/L Chloroform 0.18 U 1.0 ug/L Chloromethane 0.13 U 1.0 ug/L cis- 1,2-Dichloroethene 0.15 U 1.0 ug/L cis- 1,3-Dichloropropene 0.20 U 1.0 ug/L Dibromochloromethane 0.17 U 1.0 ug/L Dibromomethane 0.27 U 1.0 ug/L Ethylbenzene 0.13 U 1.0 ug/L Iodomethane 1.7 U 5.0 ug/L Methylene chloride 0.23 U 1.0 ug/L Styrene 0.11 U 1.0 ug/L Tetrachloroethene 0.17 U 1.0 ug/L Tetrahydrofuran 0.53 U 1.0 ug/L Toluene 0.14 U 1.0 ug/L trans-1,2-Dichloroethene 0.21 U 1.0 ug/L trans-1,3-Dichloropropene 0.15 U 1.0 ug/L trans-1,4-Dichloro-2-butene 0.70 U 1.0 ug/L Trichloroethene 0.15 U 1.0 ug/L Trichlorofluoromethane 0.24 U 1.0 ug/L Vinyl acetate 0.95 U 5.0 ug/L Vinyl chloride 0.32 U 1.0 ug/L Xylenes (Total) 0.45 U 3.0 ug/L Spike Source %REC Level Result %REC Limits RPD RPD Limit Notes 4-Bromofluorobenzene 49 u9/L 50.0 97 53-136 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 7 Of 15 QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch OD28O29 - EPA 5O3OB MS - Continued (� �Eo www.encolabs.com Blank (OD28029-BLK1) Continued Prepared: 04/28/2020 15:05 Analyzed: 04/28/2020 18:15 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Dibromofluoromethane 55 u9/L 50.0 110 67-129 Toluene-& 51 u9/L 50.0 101 59-134 LCS (OD28029-BSI) Prepared: 04/28/2020 15:05 Analyzed: 04/28/2020 16:03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 23 1.0 ug/L 20.0 113 75-133 Benzene 24 1.0 ug/L 20.0 121 80-134 Chlorobenzene 20 1.0 ug/L 20.0 101 80-120 Toluene 20 1.0 ug/L 20.0 99 71-120 Trichloroethene 24 1.0 ug/L 20.0 118 74-120 Matrix Spike (OD28029-MS1) Prepared: 04/28/2020 15:05 Analyzed: 04/28/2020 16:41 Source: CD06479-07 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 123 75-133 Benzene 28 1.0 ug/L 20.0 3.5 124 80-134 Chlorobenzene 21 1.0 ug/L 20.0 0.17 U 106 80-120 Toluene 21 1.0 ug/L 20.0 0.14 U 105 71-120 Trichloroethene 59 1.0 ug/L 20.0 36 114 74-120 Matrix Spike Dup (OD28029-MSD1) Prepared: 04/28/2020 15:05 Analyzed: 04/28/2020 17:12 Source: CD06479-07 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 7 20 Benzene 28 1.0 ug/L 20.0 3.5 122 80-134 2 17 Chlorobenzene 21 1.0 ug/L 20.0 0.17 U 103 80-120 3 16 Toluene 20 1.0 ug/L 20.0 0.14 U 102 71-120 3 17 Trichloroethene 58 1.0 ug/L 20.0 36 107 74-120 3 22 Metals by EPA 6000/7000 Series Methods - Quality Control Batch OD23O34 - EPA 747OA Blank (OD23034-BLK3) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:14 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 (OD23034-BSI) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:17 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.90 0.200 ug/L 5.00 98 80-120 Matrix Spike (OD23034-MS1) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:22 Source: CD05554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.95 0.200 ug/L 5.00 0.150 U 99 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 8 Of 15 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals by EPA 6000/7000 Series Methods - Quality Control Batch OD23O34 - EPA 747OA - Continued Matrix Spike Dup (OD23034-MSDS) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:25 Source: CD05554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.40 0.200 ug/L 5.00 0.150 U 108 75-125 9 25 Post Spike (OD23034-PS1) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:27 Source: CD05554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.37 0.200 ug/L 5.00 0.00600 107 75-125 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD22O32 - EPA 3OO5A Blank (OD22032-BLK3) Prepared: 04/22/2020 13:12 Analyzed: 04/26/2020 06:27 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (OD22032-BS1) Prepared: 04/22/2020 13:12 Analyzed: 04/26/2020 06:31 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.7 1.00 ug/L 20.0 108 80-120 Selenium 21.1 1.00 ug/L 20.0 106 80-120 Thallium 22.3 1.00 ug/L 20.0 111 80-120 Matrix Spike (OD22032-MS3) Prepared: 04/22/2020 13:12 Analyzed: 04/26/2020 06:36 Source: CD05206-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 43.7 2.00 ug/L 40.0 0.740 U 109 75-125 Selenium 43.0 2.00 ug/L 40.0 1.82 U 108 75-125 Thallium 43.8 2.00 ug/L 40.0 0.220 U 110 75-125 Matrix Spike Dup (011322032-MS1131) Prepared: 04/22/2020 13:12 Analyzed: 04/26/2020 06:40 Source: CD05206-01 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 108 75-125 2 20 Selenium 43.5 2.00 ug/L 40.0 1.82 U 109 75-125 1 20 Thallium 43.3 2.00 ug/L 40.0 0.220 U 108 75-125 1 20 Post Spike (OD22032-PS3) Prepared: 04/22/2020 13:12 Analyzed: 04/26/2020 06:44 Source: CD05206-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.9 1.00 ug/L 20.0 0.0225 110 75-125 Selenium 21.8 1.00 ug/L 20.0 -0.101 109 75-125 Thallium 22.0 1.00 ug/L 20.0 0.000678 110 75-125 Batch OD22O34 - EPA 3OO5A FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 9 Of �rJ (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD22O34 - EPA 3OO5A - Continued Blank (OD22034-BLK1) Prepared: 04/22/2020 13:51 Analyzed: 04/27/2020 10:02 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 7.60 U 10.0 ug/L Barium 1.10 U 10.0 ug/L Beryllium 0.160 U 1.00 ug/L Cadmium 0.360 U 1.00 ug/L Chromium 1.40 U 10.0 ug/L Cobalt 1.40 U 10.0 ug/L Copper 1.60 U 10.0 ug/L Lead 3.10 U 10.0 ug/L Nickel 2.20 U 10.0 ug/L Selenium 6.20 U 10.0 ug/L Silver 1.90 U 10.0 ug/L Vanadium 1.40 U 10.0 ug/L Zinc 4.40 U 10.0 ug/L LCS (OD22034-BS1) Prepared: 04/22/2020 13:51 Analyzed: 04/27/2020 10:07 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 187 10.0 ug/L 200 94 80-120 Barium 197 10.0 ug/L 200 99 80-120 Beryllium 18.6 1.00 ug/L 20.0 93 80-120 Cadmium 19.4 1.00 ug/L 20.0 97 80-120 Chromium 188 10.0 ug/L 200 94 80-120 Cobalt 188 10.0 ug/L 200 94 80-120 Copper 184 10.0 ug/L 200 92 80-120 Lead 183 10.0 ug/L 200 92 80-120 Nickel 191 10.0 ug/L 200 96 80-120 Selenium 193 10.0 ug/L 200 96 80-120 Silver 187 10.0 ug/L 200 94 80-120 Vanadium 187 10.0 ug/L 200 94 80-120 Zinc 196 10.0 ug/L 200 98 80-120 Matrix Spike (OD22034-MS1) Prepared: 04/22/2020 13:51 Analyzed: 04/27/2020 10:10 Source: CD05206-01 Spike Source O/oREC RPD Analvte Result Flaq POL Units Level Result O/oREC Limits RPD Limit Notes Arsenic 199 10.0 ug/L 200 7.60 U 100 75-125 Barium 291 10.0 ug/L 200 25.3 133 75-125 QM-07 Beryllium 19.3 1.00 ug/L 20.0 0.160 U 97 75-125 Cadmium 19.9 1.00 ug/L 20.0 0.360 U 99 75-125 Chromium 194 10.0 ug/L 200 1.40 U 97 75-125 Cobalt 195 10.0 ug/L 200 1.40 U 97 75-125 Copper 193 10.0 ug/L 200 1.60 U 97 75-125 Lead 194 10.0 ug/L 200 3.10 U 97 75-125 Nickel 195 10.0 ug/L 200 2.20 U 97 75-125 Selenium 206 10.0 ug/L 200 6.20 U 103 75-125 Silver 194 10.0 ug/L 200 1.90 U 97 75-125 Vanadium 199 10.0 ug/L 200 1.40 U 99 75-125 Zinc 209 10.0 ug/L 200 4.40 U 104 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 15 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD22O34 - EPA 3OO5A - Continued Matrix Spike Dup (OD22034-MSDS) Prepared: 04/22/2020 13:51 Analyzed: 04/27/2020 10:12 Source: CD05206-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 198 10.0 ug/L 200 7.60 U 99 75-125 0.6 20 Barium 292 10.0 ug/L 200 25.3 133 75-125 0.4 20 QM-07 Beryllium 19.2 1.00 ug/L 20.0 0.160 U 96 75-125 0.8 20 Cadmium 19.4 1.00 ug/L 20.0 0.360 U 97 75-125 3 20 Chromium 193 10.0 ug/L 200 1.40 U 96 75-125 0.6 20 Cobalt 191 10.0 ug/L 200 1.40 U 96 75-125 2 20 Copper 192 10.0 ug/L 200 1.60 U 96 75-125 0.6 20 Lead 189 10.0 ug/L 200 3.10 U 94 75-125 2 20 Nickel 195 10.0 ug/L 200 2.20 U 98 75-125 0.3 20 Selenium 199 10.0 ug/L 200 6.20 U 99 75-125 3 20 Silver 193 10.0 ug/L 200 1.90 U 96 75-125 0.4 20 Vanadium 197 10.0 ug/L 200 1.40 U 99 75-125 0.6 20 Zinc 204 10.0 ug/L 200 4.40 U 102 75-125 2 20 Post Spike (OD22034-PS1) Prepared: 04/22/2020 13:51 Analyzed: 04/27/2020 10:14 Source: CD05206-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.196 0.0100 mg/L 0.200 -0.00758 98 80-120 Barium 0.231 0.0100 mg/L 0.200 0.0253 103 80-120 Beryllium 0.0192 0.00100 mg/L 0.0200 -8.93E-5 96 80-120 Cadmium 0.0196 0.00100 mg/L 0.0200 -0.000107 98 80-120 Chromium 0.194 0.0100 mg/L 0.200 0.000888 97 80-120 Cobalt 0.195 0.0100 mg/L 0.200 0.000200 97 80-120 Copper 0.192 0.0100 mg/L 0.200 -0.000730 96 80-120 Lead 0.195 0.0100 mg/L 0.200 -0.00368 97 80-120 Nickel 0.195 0.0100 mg/L 0.200 -5.96E-5 98 80-120 Selenium 0.197 0.0100 mg/L 0.200 -0.00754 98 80-120 Silver 0.185 0.0100 mg/L 0.200 -0.00163 93 80-120 Vanadium 0.193 0.0100 mg/L 0.200 -3.16E-5 96 80-120 Zinc 0.205 0.0100 mg/L 0.200 0.00129 102 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD23O3O - EPA 5O3OB MS Blank (OD23030-BLK3) Prepared: 04/23/2020 00:00 Analyzed: 04/23/2020 12:09 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 5.2 u9/L 5.00 104 75-125 LCS (OD23030-BSI) Prepared: 04/23/2020 00:00 Analyzed: 04/23/2020 11:43 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 20.0 119 80-133 Toluene-d8 5.0 u9/L 5.00 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 11 Of 15 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD23O3O - EPA 5O3OB MS - Continued Matrix Spike (OD23030-MS1) Prepared: 04/23/2020 00:00 Analyzed: 04/23/2020 21:11 Source: AD02609-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 20.0 0.80 U 126 80-133 Toluene-d8 4.9 u9/L 5.00 98 75-125 Matrix Spike Dup (OD23030-MSD1) Prepared: 04/23/2020 00:00 Analyzed: 04/23/2020 21:36 Source: AD02609-03 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 20.0 0.80 U 127 80-133 1 19 Toluene-d8 4.9 u9/L 5.00 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 12 Of rJ (� �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. 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 13 of 15 47 G1 O f w ro 9 ca O o y 3 m n m y � x Wv � Q a C m l' v 3 m a m 0 m N a N � N a` 0 m 0 w a w A It 1`V W l Q r r' f ql f'�11 O Q � V n � m � � m Q a m d m c � � m n q. CD m qJ c a' ro � . u (a a m 0 w a Q ` n7 3 N = � m b [1 • m - n G� D' ca m o � n w % n -4 m m x is w m a m Sample Preservation Verification ENCO Cary ENCO Work Order: CDO5202 Project: White Street LF-Phase 1,11 Client: Golder Associates, Inc. (G0007) Project#: 1668421.106 Logged In: 21-Apr-20 12:41 Logged By: John C King f r Preservation Check Performed By: ;::> H Date/Time: CDO5202-01 Cont YP Type Pres (pH) Requirement pH Checked ! In Control DateMme pH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y I N/ NA Y 1 NA Rea-clent Name ID 1 2 pH Strip ID: V ((� Rea ent Name ID 3 4 Rea ent Name ID 5 6 Page 15 of 15 C:IELMNTIPrintlwko_Preservation Check. rpt ,-,_ ,_ WORK ORDER Printed: 5/5/2020 10:27:03AM CD05202 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Daniel B. Mays Project: White Street LF-Phase I,II Project Number: 1668421.106 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: 21-Apr-20 12:30 Logged In By: John C King Date Logged In: 21-Apr-20 12:41 Work Order Comments: C-2056 received at 0.9°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL G O L D E R LABORATORY DATA REVIEW Page 1 of 3 4 Project Name: White Street Landfill — Phase I, II Project Reference Number. 19131339.101 Sampling Event Date: April 20-23, 2020 Review Date: June 11, 2020 Report #: CD06347, CD05202 Initials: NTT Initials: RK Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain -of -custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: • Region III Modifications to Functional Guidelines for Organic Data Review Multi -Media, Multi -Concentration, September 1994; • Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and • Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility/C & D List NC Appendix I VOAs and RCRA Metals NC Appendix I + Detects X NC Appendix II + Detects NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW NTT COC was properly signed by all parties. NTT Correct project name and number are on the form. ➢ Incorrected project number on COC. Should be 19131339.101 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 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL GOLDER LABORATORY DATA REVIEW Page 2 of 3 NTT Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). Review Criteria Method Anal tes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW NTT Laboratory analyzed at least one internal blank for each method, where applicable. NTT Laboratory blank is interference -free. NTT Surrogate recoveries are provided for each analytical method, where applicable. NTT Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). NTT MS/MSD/LCS data results are provided for each analytical method. NTT MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). (CD05202) QM-07 was appended to the samples Matrix spike 1, Matrix spike duplicate 1, for analysis barium because the spike recovery was outside acceptable limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. 4.0 ANALYTE LISTS/METHODS NTT The proper number of constituents are present for each analyte list as identified above (including detects where applicable). NTT Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING NTT All analytical reporting associated with the event was performed by the contracted lab. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL O D LABORATORY DATA REVIEW E R Page 3 of 3 *> NTT Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been `flagged' with a `B' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 1 OX for commonly detected laboratory contaminants -acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. NTT It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. ➢ Antimony and Thallium (2X) on MW-13 ➢ Antimony and Thallium (2X) on SW-5 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. ➢ Vanadium (NC 2L= 0.3 ug/L) • MW-13 @ 4.15 ug/L (J) • SW-5 @ 1.85 (J) ug/L NTT No quantifiable inorganic or organic constituents were detected in a well or surface water point at concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). NTT Other report issues/Communications with laboratory/etc.: • Selenium reported twice for SW-5 by multiple methods. Contacted the laboratory to revise report. ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Tuesday, May 5, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.107, Project Name/Desc: White Street LF-Phase I ENCO Workorder(s): CDO5201 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Wednesday, April 22, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Daniel B. Mays 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: 5 May 2020 Client: Golder Associates, Inc. (GO007) Project: White Street LF-Phase I Lab ID: CD05201 Overview (� �Eo www.encolabs.com QV-01 was appended to the samples 4103-11, 4103-12, 4103-13, 4103-14, 4103-Trip Blank 1, and the continuing calibration verication 1 for analyses 1, 1 -Dichloroethene, Acrylonitrile, Bromochloromethane, Carbon disulfide, Chloroform, cis- 1,2-Dichloroethene, Dibromomethane, Iodomethane, trans-1,2-Dichloroethene, Trichlorofluoromethane, Vinyl acetate, and Vinyl chloride because the associated continuing calibration verification standard exhibited high bias ; since the result is non -detect, there is no impact. 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. Daniel Mays 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: CDO5201-01 Sampled: 04/21/20 11:21 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/23/20 09:57 05/04/20 14:55 EPA 7470A EPA 7470A 05/19/20 04/23/20 12:50 04/24/20 16:47 EPA 8260D EPA 503013_MS 05/05/20 05/01/20 14:38 05/01/20 18:30 Client ID: 4103-I1 Lab ID: CD05201-01RE1 Sampled: 04/21/20 11:21 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/05/20 04/27/20 00:00 04/27/20 17:57 Client ID: 4103-I2 Lab ID: CDO5201-02 Sampled: 04/21/20 09:50 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/23/20 09:57 05/04/20 14:59 EPA 7470A EPA 7470A 05/19/20 04/23/20 12:50 04/24/20 16:49 EPA 8260D EPA 5030B_MS 05/05/20 04/24/20 00:00 04/24/20 14:05 EPA 8260D EPA 503013_MS O5/05/20 05/01/20 14:38 05/01/20 19:02 Client ID: 4103-I3 Lab ID: CDO5201-03 Sampled: 04/21/20 12:35 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/23/20 09:57 05/04/20 15:01 EPA 7470A EPA 7470A 05/19/20 04/23/20 12:50 04/24/20 16:52 EPA 8260D EPA 503013_MS 05/05/20 04/24/20 00:00 04/24/20 14:31 EPA 8260D EPA 503013_MS 05/05/20 05/01/20 14:38 05/01/20 19:35 Client ID: 4103-I4 Lab ID: CDO5201-04 Sampled: 04/21/20 14:16 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/18/20 04/23/20 09:57 05/04/20 15:04 EPA 7470A EPA 7470A 05/19/20 04/23/20 12:50 04/24/20 16:55 EPA 8260D EPA 503013_MS 05/05/20 04/24/20 00:00 04/24/20 14:56 EPA 8260D EPA 503013_MS 05/05/20 05/01/20 14:38 05/01/20 20:07 Client ID: 4303-Trip Blank I Lab ID: CDO5201-05 Sampled: 04/21/20 09:50 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(sl Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/05/20 05/01/20 14:38 05/01/20 16:53 Client ID: 4303-Trip Blank I Lab ID: CD05201-05RE1 Sampled: 04/21/20 09:50 Received: 04/22/20 13:55 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 5030B_MS 05/05/20 04/27/20 00:00 04/27/20 10:42 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: CDO5201-01 Analvte Results Flag MDL Q Units Method Notes 1,4-Dichlorobenzene 5.2 0.19 1.0 ug/L EPA 8260D Barium - Total 652 1.10 10.0 ug/L EPA 6010D Benzene 5.0 0.15 1.0 ug/L EPA 8260D Chlorobenzene 12 0.17 1.0 ug/L EPA 8260D Chromium - Total 1.70 J 1.40 10.0 ug/L EPA 6010D Lead - Total 3.62 J 3.10 10.0 ug/L EPA 6010D Client ID: 4103-I1 Lab ID: CDO5201-01RE3 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 210 D 8.0 20 ug/L EPA 8260D Client ID: 4103-I2 Lab ID: CDO5201-02 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dichlorobenzene 0.93 J 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 64 0.80 2.0 ug/L EPA 8260D Barium - Total 236 1.10 10.0 ug/L EPA 6010D Chlorobenzene 2.0 0.17 1.0 ug/L EPA 8260D Client ID: 4303-I3 Lab ID: CDO5201-03 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dichlorobenzene 0.54 1 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 70 0.80 2.0 ug/L EPA 8260D Barium - Total 69.5 1.10 10.0 ug/L EPA 6010D Chromium - Total 1.66 J 1.40 10.0 ug/L EPA 6010D Client ID: 4103-I4 Lab ID: CDO5201-04 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dichlorobenzene 3.0 0.19 1.0 ug/L EPA 8260D 1,4-Dioxane 42 0.80 2.0 ug/L EPA 8260D Barium - Total 672 1.10 10.0 ug/L EPA 6010D Cadmium - Total 1.29 0.360 1.00 ug/L EPA 6010D Chlorobenzene 5.3 0.17 1.0 ug/L EPA 8260D Chromium - Total 1.49 J 1.40 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 22 0Nk"q09 www.encolabs.com ANALYTICAL RESULTS Description: 4103-I1 Lab Sample ID:CDO5201-01 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 11:21 Work Order: CD05201 Project: White Street LF-Phase I Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 1,4-Dichlorobenzene [306-46-7]^ 5.2 ug/L 1 0.19 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Acetone [67-64-1]^ 10 u ug/L 1 10 20 OE01023 EPA 8260D 05/01/20 18:30 CMK Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 Benzene [71-43-2]A 5.0 ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Carbon disulfide [75-15-O]^ 1.5 u ug/L 1 1.5 5.0 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Chlorobenzene [308-90-7]A 12 ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 Ethylbenzene [100-41-4]^ 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 OE01023 EPA 8260D 05/01/20 18:30 CMK QV-01 Xylenes (Total) [1330-20-7]^ 0.45 u ug/L 1 0.45 3.0 OE01023 EPA 8260D 05/01/20 18:30 CMK 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:CDO5201-01 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 11:21 Work Order: CDO5201 Project: White Street LF-Phase I Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 91 % 53-136 OE01023 EPA 8260D 05101120 18:30 CMK Dibromofluoromethane 45 1 50.0 91 % 67-129 OE01023 EPA 8260D 0510112018:30 CMK Toluene-d8 45 1 50.0 90 % 59-134 OE01023 EPA 6260D 051011201830 CMK 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 Ay Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 OD23034 EPA 7470A 04/24/20 16:47 KAH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD23026 EPA 6010D 05/04/20 14:55 JDH Barium [7440-39-3]^ 652 ug/L 1 1.10 10.0 OD23026 EPA 6010D 05/04/20 14:55 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD23026 EPA 6010D 05/04/20 14:55 JDH Chromium [7440-47-3]^ 1.70 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 14:55 JDH Lead [7439-92-1]^ 3.62 J ug/L 1 3.10 10.0 OD23026 EPA 6010D 05/04/20 14:55 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD23026 EPA 6010D 05/04/20 14:55 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD23026 EPA 6010D 05/04/20 14:55 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 210 D ug/L 10 8.0 20 OD27030 EPA 8260D 04/27/20 17:57 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffly Notes 5.2 1 5.00 104 % 75-125 OD27030 EPA 8260D 0412712017:57 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:CDO5201-02 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 09:50 Work Order: CD05201 Project: White Street LF-Phase I Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 1,4-Dichlorobenzene [306-46-7]^ 0.93 J ug/L 1 0.19 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Acetone [67-64-1]^ 10 u ug/L 1 10 20 OE01023 EPA 8260D 05/01/20 19:02 CMK Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 Benzene [71-43-2]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Carbon disulfide [75-15-O]^ 1.5 u ug/L 1 1.5 5.0 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Chlorobenzene [308-90-7]^ 2.0 ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 Ethylbenzene [100-41-4]^ 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 OE01023 EPA 8260D 05/01/20 19:02 CMK QV-01 Xylenes (Total) [1330-20-7]^ 0.45 u ug/L 1 0.45 3.0 OE01023 EPA 8260D 05/01/20 19:02 CMK 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:CDO5201-02 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 09:50 Work Order: CDO5201 Project: White Street LF-Phase I Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 93 % 53-136 OE01023 EPA 8260D 05101120 19:02 CMK Dibromofluoromethane 45 1 50.0 91 % 67-129 OE01023 EPA 8260D 0510112019:02 CMK Toluene-d8 46 1 50.0 92 % 59-134 OE01023 EPA 6260D 0510112019:02 CMK 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 Ay Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 OD23034 EPA 7470A 04/24/20 16:49 KAH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD23026 EPA 6010D 05/04/20 14:59 JDH Barium [7440-39-3]^ 236 ug/L 1 1.10 10.0 OD23026 EPA 6010D 05/04/20 14:59 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD23026 EPA 6010D 05/04/20 14:59 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 14:59 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD23026 EPA 6010D 05/04/20 14:59 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD23026 EPA 6010D 05/04/20 14:59 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD23026 EPA 6010D 05/04/20 14:59 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 64 ug/L 1 0.80 2.0 OD24032 EPA 8260D 04/24/20 14:05 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffly Notes 4.9 1 5.00 99 % 75-125 OD24032 EPA 8260D 0412412014:05 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:CDO5201-03 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 12:35 Work Order: CD05201 Project: White Street LF-Phase I Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 1,4-Dichlorobenzene [306-46-7]^ 0.54 J ug/L 1 0.19 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Acetone [67-64-1]^ 10 u ug/L 1 10 20 OE01023 EPA 8260D 05/01/20 19:35 CMK Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 Benzene [71-43-2]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Carbon disulfide [75-15-O]^ 1.5 u ug/L 1 1.5 5.0 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Chlorobenzene [108-90-7]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 Ethylbenzene [100-41-4]^ 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 OE01023 EPA 8260D 05/01/20 19:35 CMK QV-01 Xylenes (Total) [1330-20-7]^ 0.45 u ug/L 1 0.45 3.0 OE01023 EPA 8260D 05/01/20 19:35 CMK 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:CDO5201-03 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 12:35 Work Order: CDO5201 Project: White Street LF-Phase I Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 47 1 50.0 94 % 53-136 OE01023 EPA 8260D 05101120 19:35 CMK Dibromofluoromethane 46 1 50.0 93 % 67-129 OE01023 EPA 8260D 0510112019:35 CMK Toluene-d8 47 1 50.0 93 % 59-134 OE01023 EPA 6260D 051011201935 CMK 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 Ay Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 OD23034 EPA 7470A 04/24/20 16:52 KAH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD23026 EPA 6010D 05/04/20 15:01 JDH Barium [7440-39-3]^ 69.5 ug/L 1 1.10 10.0 OD23026 EPA 6010D 05/04/20 15:01 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD23026 EPA 6010D 05/04/20 15:01 JDH Chromium [7440-47-3]^ 1.66 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:01 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD23026 EPA 6010D 05/04/20 15:01 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD23026 EPA 6010D 05/04/20 15:01 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD23026 EPA 6010D 05/04/20 15:01 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 70 ug/L 1 0.80 2.0 OD24032 EPA 8260D 04/24/20 14:31 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffly Notes 4.9 1 5.00 99 % 75-125 OD24032 EPA 8260D 041241201421 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:CDO5201-04 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 14:16 Work Order: CD05201 Project: White Street LF-Phase I Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certfied anaiyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed By Notes 1,1,1,2-Tetrachloroethane [630-20-6]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 1,1,1-Trichloroethane [71-55-6]^ 0.12 u ug/L 1 0.12 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 1,1,2,2-Tetrachloroethane [79-34-5]^ 0.28 u ug/L 1 0.28 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 1,1,2-Trichloroethane [79-00-5]^ 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 1,4-Dichlorobenzene [306-46-7]^ 3.0 ug/L 1 0.19 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 2-Butanone [78-93-3]^ 1.3 u ug/L 1 1.3 5.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 2-Hexanone [591-78-6]^ 0.88 u ug/L 1 0.88 5.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Acetone [67-64-1]^ 10 u ug/L 1 10 20 OE01023 EPA 8260D 05/01/20 20:07 CMK Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 Benzene [71-43-2]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Bromochloromethane [74-97-5]^ 0.48 u ug/L 1 0.48 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Bromomethane [74-83-9]^ 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Carbon disulfide [75-15-O]^ 1.5 u ug/L 1 1.5 5.0 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 Carbon tetrachloride [56-23-5]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Chlorobenzene [308-90-7]^ 5.3 ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Chloroethane [75-00-3]^ 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 Chloromethane [74-87-3]^ 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 cis-1,3-Dichloropropene [10061-01-5]^ 0.20 u ug/L 1 0.20 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 Dibromochloromethane [124-48-1]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Dibromomethane [74-95-3]^ 0.27 u ug/L 1 0.27 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 Ethylbenzene [100-41-4]^ 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 Methylene chloride [75-09-2]^ 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Styrene [100-42-5]^ 0.11 u ug/L 1 0.11 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Tetrachloroethene [127-18-4]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Toluene [108-88-3]^ 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 trans-1,3-Dichloropropene [10061-02-6]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK trans-1,4-Dichloro-2-butene [110-57-6]^ 0.70 u ug/L 1 0.70 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Trichloroethene [79-01-6]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK Trichlorofluoromethane [75-69-4]^ 0.24 u ug/L 1 0.24 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 Vinyl acetate [108-05-4]^ 0.95 u ug/L 1 0.95 5.0 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 Vinyl chloride [75-01-4]^ 0.32 u ug/L 1 0.32 1.0 OE01023 EPA 8260D 05/01/20 20:07 CMK QV-01 Xylenes (Total) [1330-20-7]^ 0.45 u ug/L 1 0.45 3.0 OE01023 EPA 8260D 05/01/20 20:07 CMK 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:CDO5201-04 Received: 04/22/20 13:55 Matrix: Ground Water Sampled:04/21/20 14:16 Work Order: CDO5201 Project: White Street LF-Phase I Sampled By:Travis Martinez Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 47 1 50.0 94 % 53-136 OE01023 EPA 8260D 05101120 20:07 CMK Dibromofluoromethane 45 1 50.0 91 % 67-129 OE01023 EPA 8260D 05101120 20:07 CMK Toluene-d8 48 1 50.0 95 % 59-134 OE01023 EPA 6260D 05101120 20:07 CMK 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 Ay Notes Mercury [7439-97-6]^ 0.150 U ug/L 1 0.150 0.200 OD23034 EPA 7470A 04/24/20 16:55 KAH Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Arsenic [7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD23026 EPA 6010D 05/04/20 15:04 JDH Barium [7440-39-3]^ 672 ug/L 1 1.10 10.0 OD23026 EPA 6010D 05/04/20 15:04 JDH Cadmium [7440-43-9]^ 1.29 ug/L 1 0.360 1.00 OD23026 EPA 6010D 05/04/20 15:04 JDH Chromium [7440-47-3]^ 1.49 J ug/L 1 1.40 10.0 OD23026 EPA 6010D 05/04/20 15:04 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD23026 EPA 6010D 05/04/20 15:04 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD23026 EPA 6010D 05/04/20 15:04 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD23026 EPA 6010D 05/04/20 15:04 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 42 ug/L 1 0.80 2.0 OD24032 EPA 8260D 04/24/20 14:56 KKW Results DF Soike Lv/ % Rec Vo Rec Limits Batch Method Analyzed ffly Notes 5.1 1 5.00 102 % 75-125 OD24032 EPA 8260D 0412412014:56 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:CD05201-05 Received: 04/22/20 13:55 Matrix: Water Sampled:04/21/20 09:50 Work Order: CD05201 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 OE01023 EPA 8260D 05/01/20 16:53 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 OE01023 EPA 8260D 05/01/20 16:53 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 OE01023 EPA 8260D 05/01/20 16:53 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/01/20 16:53 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK QV-01 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK QV-01 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 OE01023 EPA 8260D 05/01/20 16:53 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 OE01023 EPA 8260D 05/01/20 16:53 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 OE01023 EPA 8260D 05/01/20 16:53 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 OE01023 EPA 8260D 05/01/20 16:53 CMK Acetone [67-64-1]A 10 u ug/L 1 10 20 OE01023 EPA 8260D 05/01/20 16:53 CMK Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 OE01023 EPA 8260D 05/01/20 16:53 CMK QV-01 Benzene [71-43-2]A 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/01/20 16:53 CMK Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 OE01023 EPA 8260D 05/01/20 16:53 CMK Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK QV-01 Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK QV-01 Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 16:53 CMK QV-01 cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 OE01023 EPA 8260D 05/01/20 16:53 CMK QV-01 Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK QV-01 Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK Styrene [100-42-5]A 0.11 Ll ug/L 1 0.11 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 OE01023 EPA 8260D 05/01/20 16:53 CMK QV-01 trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 16:53 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 OE01023 EPA 8260D 05/01/20 16:53 CMK Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 OE01023 EPA 8260D 05/01/20 16:53 CMK Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK QV-01 Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK QV-01 Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK QV-01 Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 OE01023 EPA 8260D 05/O1/20 16:53 CMK 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:CD05201-05 Received: 04/22/20 13:55 Matrix: Water Sampled:04/21/20 09:50 Work Order: CD05201 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 45 1 50.0 90 % 53-136 OE01023 EPA 826OD 05/01/20 16:53 CMK Dibromofluoromethane 47 1 50.0 93 % 67-129 OE01023 EPA 826OD 0510112016:53 CMK Toluene-d8 44 1 50.0 88 % 59-134 OE01023 EPA 626OD 0510112016:53 CMK 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 OD27030 EPA 8260D 04/27/20 10:42 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffly Notes Toluene-d8 4.9 1 5.00 99 % 75-125 OD27030 EPA 826OD 0412712010:42 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 OEO1O23 - EPA 5030E MS Blank (OE01023-BLK1) Prepared: 05/O1/2020 12:48 Analyzed: 05/O1/2020 16:20 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 44 u91L 50.0 88 53-136 Dibromofluoromethane 44 u91L 50.0 88 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 OEO1O23 - EPA 5030E MS - Continued (� �Eo www.encolabs.com Blank (OE01023-BLK1) Continued Prepared: 05/O1/2020 12:48 Analyzed: 05/O1/2020 16:20 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 44 u91L 50.0 88 59-134 LCS (OE01023-BS1) Prepared: 05/01/2020 12:48 Analyzed: 05/01/2020 14:43 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 111 75-133 Benzene 22 1.0 ug/L 20.0 112 80-134 Chlorobenzene 20 1.0 ug/L 20.0 102 80-120 Toluene 19 1.0 ug/L 20.0 97 71-120 Trichloroethene 22 1.0 ug/L 20.0 110 74-120 Matrix Spike (OE01023-MS1) Prepared: 05/01/2020 12:48 Analyzed: 05/01/2020 14:11 Source: CD06682-05 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 100 75-133 Benzene 21 1.0 ug/L 20.0 0.15 U 106 80-134 Chlorobenzene 20 1.0 ug/L 20.0 0.17 U 98 80-120 Toluene 19 1.0 ug/L 20.0 0.14 U 93 71-120 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 106 74-120 Matrix Spike Dup (OE03023-MSD1) Prepared: 05/01/2020 12:48 Analyzed: 05/01/2020 15:16 Source: CD06682-05 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 0.21 U 110 75-133 10 20 Benzene 21 1.0 ug/L 20.0 0.15 U 104 80-134 2 17 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 97 80-120 1 16 Toluene 18 1.0 ug/L 20.0 0.14 U 92 71-120 1 17 Trichloroethene 21 1.0 ug/L 20.0 0.15 U 107 74-120 0.5 22 Metals by EPA 6000/7000 Series Methods - Quality Control Batch OD23O34 - EPA 747OA Blank (OD23034-BLK1) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:14 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 (OD23034-BS3) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:17 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.90 0.200 ug/L 5.00 98 80-120 Matrix Spike (OD23034-MS1) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:22 Source: CD05554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 4.95 0.200 ug/L 5.00 0.150 U 99 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 16 Of 22 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals by EPA 6000/7000 Series Methods - Quality Control Batch OD23034 - EPA 7470A - Continued Matrix Spike Dup (OD23034-MSDS) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:25 Source: CDO5554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.40 0.200 ug/L 5.00 0.150 U 108 75-125 9 25 Post Spike (OD23034-PS1) Prepared: 04/23/2020 12:50 Analyzed: 04/24/2020 16:27 Source: CDO5554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Mercury 5.37 0.200 ug/L 5.00 0.00600 107 75-125 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD23026 - EPA 3005A Blank (OD23026-BLK3) Prepared: 04/23/2020 09:57 Analyzed: 05/04/2020 13:56 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 (OD23026-BSI) Prepared: 04/23/2020 09:57 Analyzed: 05/04/2020 13:59 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 217 10.0 ug/L 200 108 80-120 Barium 218 10.0 ug/L 200 109 80-120 Cadmium 21.4 1.00 ug/L 20.0 107 80-120 Chromium 206 10.0 ug/L 200 103 80-120 Lead 216 10.0 ug/L 200 108 80-120 Selenium 223 10.0 ug/L 200 111 80-120 Silver 210 10.0 ug/L 200 105 80-120 Matrix Spike (OD23026-MS1) Prepared: 04/23/2020 09:57 Analyzed: 05/04/2020 14:21 Source: CDO5554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 198 10.0 ug/L 200 7.60 U 99 75-125 Barium 223 10.0 ug/L 200 12.6 105 75-125 Cadmium 20.5 1.00 ug/L 20.0 0.360 U 102 75-125 Chromium 199 10.0 ug/L 200 1.40 U 100 75-125 Lead 207 10.0 ug/L 200 3.10 U 104 75-125 Selenium 209 10.0 ug/L 200 6.20 U 105 75-125 Silver 201 10.0 ug/L 200 1.90 U 101 75-125 Matrix Spike Dup (011323026-MS1131) Prepared: 04/23/2020 09:57 Analyzed: 05/04/2020 14:24 Source: CDO5554-08 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 99 75-125 0.6 20 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 OD23O26 - EPA 3OO5A - Continued Matrix Spike Dup (OD23026-MSDS) Continued Prepared: 04/23/2020 09:57 Analyzed: 05/04/2020 14:24 Source: CD05554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Barium 223 10.0 ug/L 200 12.6 105 75-125 0.2 20 Cadmium 20.5 1.00 ug/L 20.0 0.360 U 103 75-125 0.2 20 Chromium 200 10.0 ug/L 200 1.40 U 100 75-125 0.1 20 Lead 202 10.0 ug/L 200 3.10 U 101 75-125 3 20 Selenium 209 10.0 ug/L 200 6.20 U 105 75-125 0.03 20 Silver 200 10.0 ug/L 200 1.90 U 100 75-125 0.4 20 Post Spike (OD23026-PS1) Prepared: 04/23/2020 09:57 Analyzed: 05/04/2020 14:26 Source: CD05554-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 0.212 0.0100 mg/L 0.200 -0.000908 106 80-120 Barium 0.232 0.0100 mg/L 0.200 0.0126 110 80-120 Cadmium 0.0213 0.00100 mg/L 0.0200 0.000116 106 80-120 Chromium 0.207 0.0100 mg/L 0.200 0.000363 103 80-120 Lead 0.214 0.0100 mg/L 0.200 -0.000308 107 80-120 Selenium 0.231 0.0100 mg/L 0.200 0.00405 114 80-120 Silver 0.197 0.0100 mg/L 0.200 0.000333 98 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD24O32 - EPA 5O3OB MS Blank (OD24032-BLK1) Prepared: 04/24/2020 00:00 Analyzed: 04/24/2020 11:28 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-& 4.6 u9/L 5.00 96 75-125 LCS (OD24032-BSI) Prepared: 04/24/2020 00:00 Analyzed: 04/24/2020 10:31 Spike Source %REC RPD Analvte Result Flaq Q Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 23 2.0 ug/L 25.0 94 80-133 Toluene-d8 4.9 u9/L 5.00 99 75-125 Matrix Spike (OD24032-MS1) Prepared: 04/24/2020 00:00 Analyzed: 04/24/2020 20:55 Source: AD02687-02 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 3.5 96 80-133 Toluene-d8 5.0 u9/L 5.00 99 75-125 Matrix Spike Dup (01324032-MS131) Prepared: 04/24/2020 00:00 Analyzed: 04/27/2020 08:56 Source: AD02687-02 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 3.5 95 80-133 0.6 19 Toluene-d8 4.9 u9/L 5.00 99 75-125 Batch OD27O3O - EPA 5030E MS FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. Page 18 Of 22 (� �Eo www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD27O3O - EPA 5O3OB MS - Continued Blank (OD27030-BLK1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 10:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 U 2.0 ug/L Toluene-d8 5.1 u9/L 5.00 102 75-125 LCS (OD27030-BSI) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 09:21 Spike Source %REC RPD Analvte Result Flaa POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 97 80-133 Toluene-d8 4.9 u9/L 5.00 98 75-125 Matrix Spike (OD27030-MS1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:14 Source: AD02710-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 95 80-133 Toluene-d8 5.2 u9/L 5.00 104 75-125 Matrix Spike Dup (01327030-MS131) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:39 Source: AD02710-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit 1,4-Dioxane 25 2.0 ug/L 25.0 0.80 U 98 80-133 3 19 98 i oiuene-oa 4.9 u9/L 5.00 75-125 Notes 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. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 20 of 22 a 3 m m n n m � m v 0 � � N a C o 0 O � tEA N N - ce � m m ii N 9 l t0 N W q - `4\Y l N M N fp 0. 1L 0. N (1 tzs T n O a o D � A� '0 g 41 t° LT �. W o m a n ro ps m Sample Preservation Verification ENCO Cary Work Order: CD05205 Client: Golder Associates, Inc. (GO007) Project: White Street LF-Phase II Non -Routine Project #: 1668421.107 Logged In: 22-Apr-20 14:50 Logged By: John C King Preservation Check Performed By: �k Date/Time: CDO5205-01 Cont T e Yp Pres (pH) pH Checked I Requirement In Control DateMme pH Adjusted Adjusted Reagent UsedlComments A 250mLP*HNO3 <2 N / NA Y /Cty 1 NA CDO5205-02 Cant Type Pres (pH} Requirement pH Checked I In Control pH Adjusted DateMme Adjusted Reagent UsedlComments A 250m1_P+HNO3 <2 Y: / N I NA Y I N 1 NA Rea ent Name ID 1 2 pH Strip ID: cic� Rea ent Name ID 3 4 Rea ent Name ID 5 6 Page 22 of 22 C:IELMNTIPrintlwko_Preservation Check. rpt r - i . WORK ORDER Printed: 5/5/2020 11:28:31AM CD05201 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Daniel B. Mays Project: White Street LF-Phase I Project Number: 1668421.107 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: Timothy J. Parker Date Received: 22-Apr-20 13:55 Logged In By: John C King Date Logged In: 22-Apr-20 14:56 Work Order Comments: C-2078 received at 1.1°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL GOLDER LABORATORY DATA REVIEW Page 1 of 4 Project Name: White Street Landfill — Phase I Project Reference Number: 19131339.101 Sampling Event Date: April 20-23, 2020 Review Date: May 12, 2020 Initials: DC Report #: CD05201,CDO5202 Review: _RK Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain -of -custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: • Region III Modifications to Functional Guidelines for Organic Data Review Multi -Media, Multi -Concentration, September 1994; • Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and • Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility/C & D List X NC Appendix I VOAs and RCRA Metals NC Appendix I + Detects NC Appendix II NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW DC COC was properly signed by all parties. DC Correct project name and number are on the form. Incorrected project number on COC. Should be 19131339 DC Sample receipt condition at laboratory was acceptable. DC Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES DC Holding times for extraction and/or analysis were met for each analytical GOLDER ASSOCIATES INC, INC. QUALITY ASSURANCE & QUALITY CONTROL GOLDER LABORATORY DATA REVIEW Page 2 of 4 Method (see below for reference). Review Criteria Method Analytes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW DC Laboratory analyzed at least one internal blank for each method, where applicable. DC Laboratory blank is interference -free. DC Surrogate recoveries are provided for each analytical method, where applicable. DC Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). DC MS/MSD/LCS data results are provided for each analytical method. DC MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). 4.0 ANALYTE LISTS/METHODS DC The proper number of constituents are present for each analyte list as identified above (including detects where applicable). DC Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING DC All analytical reporting associated with the event was performed by the contracted lab DC Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, 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 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL O D LABORATORY DATA REVIEW E R Page 3 of 4 *> contaminants -acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. DC It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. ➢ 1,4-Dioxane (10X) in 1-1 ➢ Thallium and Antinomy (2X) in MW-13 DC The report provides the reporting limit for each constituent. DC 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. DC 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. ➢ Benzene (NC 2L = 1 ug/L) • 1-1 @ 5.0 ug/L ➢ 1,4 Dioxane (NC 2L= 3 ug/L) • 1-1 @ 210 ug/L • 1-2 @ 64 ug/L • 1-3 @ 70 ug/L • 1-4 @ 42 ug/L ➢ Vanadium (NC 2L = 0.3 ug/L) • MWA3 @ 4.15 ug/L (J) DC No quantifiable inorganic or organic constituents were detected in a well or surface water point at concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). DC Other report issues/Communications with laboratory/etc.: (CD05201) QV-01 was appended to the samples 4103-11, 4103-12, 4103-13, 4103-14, 4103- Trip Blank 1, and the continuing calibration verication 1 for analyses 1,1- Dichloroethene, Acrylonitrile, Bromochloromethane, Carbon disulfide, Chloroform, cis-1,2-Dichloroethene, Dibromomethane, lodomethane, trans-1,2- Dichloroethene, Trichlorofluoromethane, Vinyl acetate, and Vinyl chloride because the associated continuing calibration verification standard exhibited high bias ; since the result is non -detect, there is no impact. • (CD05202) QM-07 was appended to the samples Matrix spike 1, Matrix spike duplicate 1, for analysis barium because the spike recovery was outside GOLDER ASSOCIATES NC, INC. GOLDER QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 4 of 4 acceptable limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. ENCO Laboratones Accurate. Timely. Responsive. Innovative. 102-A Woodwinds Industrial Court Cary NC, 27511 Phone: 919.467.3090 FAX: 919.467.3515 Wednesday, June 17, 2020 Golder Associates, Inc. (G0007) Attn: Dusty Reedy 5B Oak Branch Drive Greensboro, NC 27407 RE: Laboratory Results for Project Number: 1668421.107, Project Name/Desc: White Street LF-Phase I,II,III SW ENCO Workorder(s): CDO5203 Dear Dusty Reedy, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Thursday, April 23, 2020. Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Daniel B. Mays 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: 17 June 2020 Client: Golder Associates, Inc. (G0007) Project: White Street LF-Phase 1,11,111 SW Lab ID: CD05203 Overview (� �Eo www.encolabs.com This report is an amendment to the original report dated May 8, 2020 for this work order. This report was revised, at the client's request, to only report selenium by EPA method 601 OD. 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 QM-11 was appended to samples MSD1 sample for analysis Total because the precision between the duplicate matrix spikes of the same sample was outside acceptable limits. QV-01 was appended to samples 4103/12-SW1, 4103/12-SW2, 4103/12-SW3, 4103/12-SW4, and 4103/12-Trip Blank for analyses 1,2-Dichloroethane, Bromochloromethane, cis- 1,3-Dichloropropene, Dibromomethane, lodomethane, and Trichlorofluoromethane because the associated continuing calibration verification standard exhibited high bias ; since the result is ND for the analyte there is no impact on data quality. 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. Daniel Mays 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: 4303/12-SW3 Lab ID: CD05203-01 Sampled: 04/22/20 16:53 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:32 05/07/20 16:06 EPA 6020E EPA 3005A 10/19/20 04/24/20 10:28 04/28/20 12:14 EPA 8260D EPA 503013_MS 05/06/20 04/27/20 00:00 04/27/20 12:50 EPA 8260D EPA 503013_MS 05/06/20 05/05/20 13:22 05/05/20 17:25 Client ID: 4303/12-SW2 Lab ID: CD05203-02 Sampled: 04/22/20 14:52 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:32 05/07/20 16:08 EPA 6020E EPA 3005A 10/19/20 04/24/20 10:28 04/28/20 12:18 EPA 8260D EPA 503013_MS O5/06/20 04/27/20 00:00 04/27/20 13:15 EPA 8260D EPA 503013_MS 05/06/20 05/05/20 13:22 05/05/20 17:58 Client ID: 4303/12-SW3 Lab ID: CD05203-03 Sampled: 04/22/20 15:15 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:32 05/07/20 16:11 EPA 6020B EPA 3005A 10/19/20 04/24/20 10:28 04/28/20 12:22 EPA 8260D EPA 503013_MS 05/06/20 04/27/20 00:00 04/27/20 13:41 EPA 8260D EPA 5030B_MS 05/06/20 05/05/20 13:22 05/05/20 18:30 Client ID: 4303/12-SW4 Lab ID: CD05203-04 Sampled: 04/22/20 16:00 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 6010D EPA 3005A 10/19/20 04/27/20 09:32 05/07/20 16:13 EPA 6020B EPA 3005A 10/19/20 04/24/20 10:28 04/28/20 12:35 EPA 8260D EPA 503013_MS 05/06/20 04/27/20 00:00 04/27/20 14:07 EPA 8260D EPA 503013_MS 05/06/20 05/05/20 13:22 05/05/20 19:02 Client ID: 4103/12-Trip Blank Lab ID: CD05203-05 Sampled: 04/22/20 14:52 Received: 04/23/20 10:21 Parameter Preparation Hold Date/Time(s) Prep Date/Time(s) Analysis Date/Time(s) EPA 8260D EPA 503013_MS 05/06/20 04/27/20 00:00 04/27/20 14:32 EPA 8260D EPA 503013_MS 05/06/20 05/05/20 13:22 05/05/20 16:20 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: 4303/12-SW3 Lab ID: CD05203-01 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 41.9 1.10 10.0 ug/L EPA 6010D Chromium - Total 1.65 J 1.40 10.0 ug/L EPA 6010D Copper - Total 4.72 J 1.60 10.0 ug/L EPA 6010D Nickel - Total 36.8 2.20 10.0 ug/L EPA 6010D Vanadium - Total 1.75 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 27.1 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW2 Lab ID: CD05203-02 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 1.6 J 0.80 2.0 ug/L EPA 8260D Barium - Total 48.0 1.10 10.0 uq/L EPA 6010D I Client ID: 4303/12-SW3 Lab ID: CD05203-03 Analvte Results Flag MDL PQL Units Method Notes Barium - Total 44.2 1.10 10.0 ug/L EPA 6010D Chromium - Total 1.70 J 1.40 10.0 ug/L EPA 6010D Copper - Total 4.85 J 1.60 10.0 ug/L EPA 6010D Nickel - Total 3.71 J 2.20 10.0 ug/L EPA 6010D Vanadium - Total 2.28 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 13.6 4.40 10.0 ug/L EPA 6010D Client ID: 4303/12-SW4 Lab ID: CD05203-04 Analvte Results Flag MDL PQL Units Method Notes 1,4-Dioxane 0.89 J 0.80 2.0 ug/L EPA 8260D Barium - Total 42.2 1.10 10.0 ug/L EPA 6010D Copper - Total 6.44 J 1.60 10.0 ug/L EPA 6010D Vanadium - Total 2.49 J 1.40 10.0 ug/L EPA 6010D Zinc - Total 13.3 4.40 10.0 ug/L EPA 6010D FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 22 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW1 Lab Sample ID:CD05203-01 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 16:53 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK QV-01 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OE05044 EPA 8260D 05/05/20 17:25 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OE05044 EPA 8260D 05/05/20 17:25 CMK Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK QV-01 Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OE05044 EPA 8260D 05/05/20 17:25 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK QV-01 Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OE05044 EPA 8260D 05/05/20 17:25 CMK Xylenes (Total) [1330-20-7]A 0.45 U ug/L 1 0.45 3.0 OE05044 EPA 8260D 05/05/20 17:25 CMK 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: 4103/12-SW1 Lab Sample ID:CD05203-01 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 16:53 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 45 1 50.0 90 % 53-136 OE05044 EPA 826OD 0510512017:25 CMK Dibromofluoromethane 45 1 50.0 90 % 67-129 OE05044 EPA 826OD 0510512017:25 CMK Toluene-d8 45 1 50.0 89 % 59-134 OE05044 EPA 626OD 0510512017:25 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 12:14 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Barium [7440-39-3]^ 41.9 ug/L 1 1.10 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27009 EPA 6010D 05/07/20 16:06 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27009 EPA 6010D 05/07/20 16:06 JDH Chromium [7440-47-3]^ 1.65 J ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Copper[7440-50-8]^ 4.72 J ug/L 1 1.60 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Nickel[7440-02-O]^ 36.8 ug/L 1 2.20 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 12:14 RLF Vanadium [7440-62-2]^ 1.75 J ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:06 JDH Zinc[744O-66-6]^ 27.1 ug/L 1 4.40 10.0 OD27009 EPA 6010D 05/07/20 16:06 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 OD27030 EPA 8260D 04/27/20 12:50 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 5.2 1 5.00 105 % 75-125 OD27030 EPA 826OD 0412712012:50 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 22 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW2 Lab Sample ID:CD05203-02 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 14:52 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK QV-01 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OE05044 EPA 8260D 05/05/20 17:58 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OE05044 EPA 8260D 05/05/20 17:58 CMK Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK QV-01 Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OE05044 EPA 8260D 05/05/20 17:58 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK QV-01 Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OE05044 EPA 8260D 05/05/20 17:58 CMK Xylenes (Total) [1330-20-7]A 0.45 U ug/L 1 0.45 3.0 OE05044 EPA 8260D 05/05/20 17:58 CMK 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: 4103/12-SW2 Lab Sample ID:CD05203-02 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 14:52 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 93 % 53-136 OE05044 EPA 826OD 0510512017:58 CMK Dibromofluoromethane 43 1 50.0 86 % 67-129 OE05044 EPA 826OD 0510512017:58 CMK Toluene-d8 44 1 50.0 88 % 59-134 OE05044 EPA 626OD 0510512017:58 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony [7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 12:18 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Barium [7440-39-3]^ 48.0 ug/L 1 1.10 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27009 EPA 6010D 05/07/20 16:08 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27009 EPA 6010D 05/07/20 16:08 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Copper[7440-50-8]^ 1.60 U ug/L 1 1.60 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 12:18 RLF Vanadium [7440-62-2]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Zinc [7440-66-6]^ 4.40 U ug/L 1 4.40 10.0 OD27009 EPA 6010D 05/07/20 16:08 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 1.6 J ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 13:15 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 98 % 75-125 OD27030 EPA 8260D 0412712013:15 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 22 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW3 Lab Sample ID:CD05203-03 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 15:15 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK QV-01 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OE05044 EPA 8260D 05/05/20 18:30 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OE05044 EPA 8260D 05/05/20 18:30 CMK Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK QV-01 Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OE05044 EPA 8260D 05/05/20 18:30 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK QV-01 Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OE05044 EPA 8260D 05/05/20 18:30 CMK Xylenes (Total) [1330-20-7]A 0.45 U ug/L 1 0.45 3.0 OE05044 EPA 8260D 05/05/20 18:30 CMK 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: 4103/12-SW3 Lab Sample ID:CD05203-03 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 15:15 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 44 1 50.0 88 % 53-136 OE05044 EPA 826OD 0510512018:30 CMK Dibromofluoromethane 46 1 50.0 92 % 67-129 OE05044 EPA 826OD 0510512018:30 CMK Toluene-d8 45 1 50.0 89 % 59-134 OE05044 EPA 626OD 051051201830 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 12:22 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Barium [7440-39-3]^ 44.2 ug/L 1 1.10 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27009 EPA 6010D 05/07/20 16:11 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27009 EPA 6010D 05/07/20 16:11 JDH Chromium [7440-47-3]^ 1.70 J ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Copper[7440-50-8]^ 4.85 J ug/L 1 1.60 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Nickel[7440-02-O]^ 3.71 J ug/L 1 2.20 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 12:22 RLF Vanadium [7440-62-2]^ 2.28 J ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Zinc[744O-66-6]^ 13.6 ug/L 1 4.40 10.0 OD27009 EPA 6010D 05/07/20 16:11 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed By Notes 1,4-Dioxane [123-91-1]^ 0.80 U ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 13:41 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 98 % 75-125 OD27030 EPA 826OD 04127120 13:41 KKW FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 of 22 00� www.encolabs.com ANALYTICAL RESULTS Description: 4103/12-SW4 Lab Sample ID:CD05203-04 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 16:00 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte FCAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 U ug/L 1 0.12 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 U ug/L 1 0.28 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 U ug/L 1 0.66 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK QV-01 1,2-Dichloropropane [78-87-5]^ 0.10 U ug/L 1 0.10 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 U ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 2-Butanone [78-93-3]A 1.3 U ug/L 1 1.3 5.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 2-Hexanone [591-78-6]A 0.88 U ug/L 1 0.88 5.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 U ug/L 1 1.1 5.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Acetone [67-64-1]A 10 U ug/L 1 10 20 OE05044 EPA 8260D 05/05/20 19:02 CMK Acrylonitrile [107-13-1]^ 3.5 U ug/L 1 3.5 10 OE05044 EPA 8260D 05/05/20 19:02 CMK Benzene[71-43-2]A 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Bromochloromethane [74-97-5]A 0.48 U ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Bromoform [75-25-2]^ 0.22 U ug/L 1 0.22 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Bromomethane [74-83-9]A 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Carbon disulfide [75-15-0]A 1.5 U ug/L 1 1.5 5.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Carbon tetrachloride [56-23-5]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Chlorobenzene [108-90-7]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Chloroethane [75-00-3]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Chloroform [67-66-3]^ 0.18 U ug/L 1 0.18 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Chloromethane [74-87-3]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 U ug/L 1 0.20 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK QV-01 Dibromochloromethane [124-48-1]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Dibromomethane [74-95-3]A 0.27 U ug/L 1 0.27 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 U ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Iodomethane [74-88-4]^ 1.7 U ug/L 1 1.7 5.0 OE05044 EPA 8260D 05/05/20 19:02 CMK QV-01 Methylene chloride [75-09-2]A 0.23 U ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Styrene [100-42-5]A 0.11 U ug/L 1 0.11 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Tetrachloroethene [127-18-4]A 0.17 U ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Toluene [108-88-3]^ 0.14 U ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 U ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 U ug/L 1 0.70 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Trichloroethene [79-01-6]^ 0.15 U ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Trichlorofluoromethane [75-69-4]^ 0.24 U ug/L 1 0.24 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK QV-01 Vinyl acetate [108-05-4]A 0.95 U ug/L 1 0.95 5.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Vinyl chloride [75-01-4]^ 0.32 U ug/L 1 0.32 1.0 OE05044 EPA 8260D 05/05/20 19:02 CMK Xylenes (Total) [1330-20-7]A 0.45 U ug/L 1 0.45 3.0 OE05044 EPA 8260D 05/05/20 19:02 CMK 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: 4103/12-SW4 Lab Sample ID:CD05203-04 Received: 04/23/20 10:21 Matrix: Surface Water Sampled:04/22/20 16:00 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By:Travis Martinez/Nicolas Tej Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed By Notes 4-Bromofluorobenzene 46 1 50.0 92 % 53-136 OE05044 EPA 826OD 0510512019:02 CMK Dibromofluoromethane 45 1 50.0 90 % 67-129 OE05044 EPA 826OD 0510512019:02 CMK Toluene-d8 45 1 50.0 90 % 59-134 OE05044 EPA 626OD 0510512019:02 CMK Metals (total recoverable) by EPA 6000/7000 Series Methods ^ - ENCO Cary certified analyte [NC 591] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes Antimony[7440-36-O]^ 0.740 U ug/L 2 0.740 2.00 OD24021 EPA 6020B 04/28/20 12:35 RLF Arsenic[7440-38-2]^ 7.60 U ug/L 1 7.60 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Barium [7440-39-3]^ 42.2 ug/L 1 1.10 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Beryllium [7440-41-7]^ 0.160 U ug/L 1 0.160 1.00 OD27009 EPA 6010D 05/07/20 16:13 JDH Cadmium [7440-43-9]^ 0.360 U ug/L 1 0.360 1.00 OD27009 EPA 6010D 05/07/20 16:13 JDH Chromium [7440-47-3]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Cobalt[7440-48-4]^ 1.40 U ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Copper[7440-50-8]^ 6.44 J ug/L 1 1.60 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Lead [7439-92-1]^ 3.10 U ug/L 1 3.10 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Nickel[7440-02-O]^ 2.20 U ug/L 1 2.20 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Selenium [7782-49-2]^ 6.20 U ug/L 1 6.20 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Silver [7440-22-4]^ 1.90 U ug/L 1 1.90 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Thallium [7440-28-O]^ 0.220 U ug/L 2 0.220 2.00 OD24021 EPA 6020B 04/28/20 12:35 RLF Vanadium [7440-62-2]^ 2.49 J ug/L 1 1.40 10.0 OD27009 EPA 6010D 05/07/20 16:13 JDH Zinc[744O-66-6]^ 13.3 ug/L 1 4.40 10.0 OD27009 EPA 6010D O5/07/20 16:13 JDH Volatile Organic Compounds by GCMS SIM Isotope Dilution ^ - ENCO Orlando certified analyte [NC 424] Analyte rCAS Numberl Results Flag Units DF MDL PQL Batch Method Analyzed Ay Notes 1,4-Dioxane [123-91-1]^ 0.89 J ug/L 1 0.80 2.0 OD27030 EPA 8260D 04/27/20 14:07 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Analyzed ffly Notes Toluene-d8 4.9 1 5.00 98 % 75-125 OD27030 EPA 8260D 0412712014:07 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: 4103/12-Trip Blank Lab Sample ID:CD05203-05 Received: 04/23/20 10:21 Matrix: Water Sampled:04/22/20 14:52 Work Order: CD05203 Project: White Street LF-Phase I,II,III SW Sampled By: ENCO Volatile Organic Compounds by GCMS ^ - ENCO Cary rertified analyte [NC 591] Analyte ICAS Numberl Results Flaa Units DF MDL P L Batch Method Analyzed Notes 1,1,1,2-Tetrachloroethane [630-20-6]A 0.17 u ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,1,1-Trichloroethane [71-55-6]A 0.12 u ug/L 1 0.12 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,1,2,2-Tetrachloroethane [79-34-5]A 0.28 u ug/L 1 0.28 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,1,2-Trichloroethane [79-00-5]A 0.14 u ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,1-Dichloroethane [75-34-3]^ 0.13 u ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,1-Dichloroethene [75-35-4]^ 0.21 u ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,2,3-Trichloropropane [96-18-4]^ 0.23 u ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,2-Dibromo-3-chloropropane [96-12-8]^ 0.48 u ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,2-Dibromoethane [106-93-4]^ 0.66 u ug/L 1 0.66 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,2-Dichlorobenzene [95-50-1]^ 0.19 u ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,2-Dichloroethane [107-06-2]^ 0.21 u ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK QV-01 1,2-Dichloropropane [78-87-5]^ 0.10 u ug/L 1 0.10 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 1,4-Dichlorobenzene [106-46-7]^ 0.19 u ug/L 1 0.19 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 2-Butanone [78-93-3]A 1.3 u ug/L 1 1.3 5.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 2-Hexanone [591-78-6]A 0.88 u ug/L 1 0.88 5.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 4-Methyl-2-pentanone [108-10-1]^ 1.1 u ug/L 1 1.1 5.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Acetone [67-64-1]A 10 u ug/L 1 10 20 OE05044 EPA 8260D 05/05/20 16:20 CMK Acrylonitrile [107-13-1]^ 3.5 u ug/L 1 3.5 10 OE05044 EPA 8260D 05/05/20 16:20 CMK Benzene[71-43-2]A 0.15 u ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Bromochloromethane [74-97-5]A 0.48 u ug/L 1 0.48 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK QV-01 Bromodichloromethane [75-27-4]^ 0.17 u ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Bromoform [75-25-2]^ 0.22 u ug/L 1 0.22 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Bromomethane [74-83-9]A 0.14 u ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Carbon disulfide [75-15-0]A 1.5 u ug/L 1 1.5 5.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Carbon tetrachloride [56-23-5]A 0.17 u ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Chlorobenzene [108-90-7]A 0.17 u ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Chloroethane [75-00-3]A 0.23 u ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Chloroform [67-66-3]^ 0.18 u ug/L 1 0.18 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Chloromethane [74-87-3]A 0.13 u ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK cis-1,2-Dichloroethene [156-59-2]^ 0.15 u ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK cis-1,3-Dichloropropene [10061-01-5]A 0.20 u ug/L 1 0.20 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK QV-01 Dibromochloromethane [124-48-1]A 0.17 u ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Dibromomethane [74-95-3]A 0.27 u ug/L 1 0.27 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK QV-01 Ethylbenzene [100-41-4]A 0.13 u ug/L 1 0.13 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Iodomethane [74-88-4]^ 1.7 u ug/L 1 1.7 5.0 OE05044 EPA 8260D 05/05/20 16:20 CMK QV-01 Methylene chloride [75-09-2]A 0.23 u ug/L 1 0.23 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Styrene[100-42-5]A 0.11 Ll ug/L 1 0.11 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Tetrachloroethene [127-18-4]A 0.17 Ll ug/L 1 0.17 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Toluene [108-88-3]^ 0.14 Ll ug/L 1 0.14 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK trans-1,2-Dichloroethene [156-60-5]^ 0.21 Ll ug/L 1 0.21 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK trans-1,3-Dichloropropene [10061-02-6]^ 0.15 Ll ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK trans-1,4-Dichloro-2-butene [110-57-6]A 0.70 Ll ug/L 1 0.70 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Trichloroethene [79-01-6]^ 0.15 Ll ug/L 1 0.15 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Trichlorofluoromethane [75-69-4]^ 0.24 Ll ug/L 1 0.24 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK QV-01 Vinyl acetate [108-05-4]A 0.95 Ll ug/L 1 0.95 5.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Vinyl chloride [75-01-4]^ 0.32 Ll ug/L 1 0.32 1.0 OE05044 EPA 8260D 05/05/20 16:20 CMK Xylenes (Total) [1330-20-7]A 0.45 Ll ug/L 1 0.45 3.0 OE05044 EPA 8260D 05/05/20 16:20 CMK 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: 4103/12-Trip Blank Lab Sample ID:CD05203-05 Received: 04/23/20 10:21 Matrix: Water Sampled:04/22/20 14:52 Work Order: CD05203 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 48 1 50.0 96 % 53-136 OE05044 EPA 826OD 0510512016:20 CMK Dibromofluoromethane 46 1 50.0 92 % 67-129 OE05044 EPA 826OD 0510512016:20 CMK Toluene-d8 44 1 50.0 89 % 59-134 OE05044 EPA 626OD 0510512016:20 CMK 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 OD27030 EPA 8260D 04/27/20 14:32 KKW Surrogates Results DF Spike Lv/ % Rec % Rec Limits Batch Method Ana/vzed ffly Notes Toluene-d8 4.9 1 5.00 99 % 75-125 OD27030 EPA 826OD 041271201422 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 OEO5O44 - EPA 5030E MS Blank (OE05044-BLK1) Prepared: 05/05/2020 13:22 Analyzed: 05/05/2020 15:48 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 RPD Level Result %REC Limits RPD Limit Notes 4-Bromofluorobenzene 47 u9/L 50.0 94 53-136 Dibromofluoromethane 46 u9/L 50.0 92 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 OEO5O44 - EPA 5030E MS - Continued (� �Eo www.encolabs.com Blank (OE05044-BLK1) Continued Prepared: 05/05/2020 13:22 Analyzed: 05/05/2020 15:48 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Toluene-d8 45 u91L 50.0 69 59-134 LCS (OE05044-BS1) Prepared: 05/05/2020 13:22 Analyzed: 05/05/2020 13:39 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 21 1.0 ug/L 20.0 103 80-134 Chlorobenzene 17 1.0 ug/L 20.0 87 80-120 Toluene 17 1.0 ug/L 20.0 84 71-120 Trichloroethene 23 1.0 ug/L 20.0 117 74-120 Matrix Spike (OE05044-MS1) Prepared: 05/05/2020 13:22 Analyzed: 05/05/2020 14:11 Source: CD06682-14 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,1-Dichloroethene 22 1.0 ug/L 20.0 0.21 U 109 75-133 Benzene 21 1.0 ug/L 20.0 0.15 U 106 80-134 Chlorobenzene 19 1.0 ug/L 20.0 0.17 U 95 80-120 Toluene 18 1.0 ug/L 20.0 0.14 U 89 71-120 Trichloroethene 23 1.0 ug/L 20.0 0.15 U 114 74-120 Matrix Spike Dup (OE05044-MSD1) Prepared: 05/05/2020 13:22 Analyzed: 05/05/2020 14:43 Source: CD06682-14 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 104 75-133 4 20 Benzene 20 1.0 ug/L 20.0 0.15 U 99 80-134 6 17 Chlorobenzene 18 1.0 ug/L 20.0 0.17 U 92 80-120 3 16 Toluene 18 1.0 ug/L 20.0 0.14 U 88 71-120 1 17 Trichloroethene 23 1.0 ug/L 20.0 0.15 U 114 74-120 0.1 22 Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O21 - EPA 3OO5A Blank (OD24021-BLK1) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:44 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 0.370 U 1.00 ug/L Selenium 0.910 U 1.00 ug/L Thallium 0.110 U 1.00 ug/L LCS (OD24021-BSI) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:48 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 20.9 1.00 ug/L 20.0 105 80-120 Selenium 21.5 1.00 ug/L 20.0 107 80-120 Thallium 21.0 1.00 ug/L 20.0 105 80-120 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 (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD24O21 - EPA 3OO5A - Continued Matrix Spike (OD24021-MS1) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:52 Source: CD05553-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.1 2.00 ug/L 40.0 0.740 U 105 75-125 Selenium 38.8 2.00 ug/L 40.0 1.82 U 97 75-125 Thallium 40.7 2.00 ug/L 40.0 0.220 U 102 75-125 Matrix Spike Dup (OD24021-MSDS) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 11:56 Source: CD05553-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 42.7 2.00 ug/L 40.0 0.740 U 107 75-125 1 20 Selenium 41.3 2.00 ug/L 40.0 1.82 U 103 75-125 6 20 Thallium 41.3 2.00 ug/L 40.0 0.220 U 103 75-125 2 20 Post Spike (OD24021-PS1) Prepared: 04/24/2020 10:28 Analyzed: 04/28/2020 12:05 Source: CD05553-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Antimony 21.5 1.00 ug/L 20.0 0.00516 108 75-125 Selenium 19.7 1.00 ug/L 20.0 0.0825 98 75-125 Thallium 21.3 1.00 ug/L 20.0 0.00474 107 75-125 Batch OD27OO9 - EPA 3OO5A Blank (OD27009-BLK1) Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:03 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 (OD27009-BS1) Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:21 Spike Source %REC Analvte Result Flaq POL Units Level Result %REC Limits Arsenic 192 10.0 ug/L 200 96 80-120 Barium 188 10.0 ug/L 200 94 80-120 Beryllium 18.3 1.00 ug/L 20.0 92 80-120 Cadmium 19.4 1.00 ug/L 20.0 97 80-120 Chromium 183 10.0 ug/L 200 92 80-120 Cobalt 195 10.0 ug/L 200 98 80-120 Copper 183 10.0 ug/L 200 92 80-120 Lead 193 10.0 ug/L 200 96 80-120 RPD 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 22 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD27OO9 - EPA 3OO5A - Continued LCS (OD27009-BSI) Continued Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:21 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Nickel 187 10.0 ug/L 200 93 80-120 Selenium 195 10.0 ug/L 200 97 80-120 Silver 185 10.0 ug/L 200 92 80-120 Vanadium 183 10.0 ug/L 200 91 80-120 Zinc 193 10.0 ug/L 200 96 80-120 Matrix Spike (OD27009-MS1) Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:28 Source: CD04204-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Arsenic 154 10.0 ug/L 200 7.60 U 77 75-125 Barium 184 10.0 ug/L 200 1.10 U 92 75-125 Beryllium 17.6 1.00 ug/L 20.0 0.160 U 88 75-125 Cadmium 16.5 1.00 ug/L 20.0 0.360 U 83 75-125 Chromium 179 10.0 ug/L 200 1.40 U 89 75-125 Cobalt 170 10.0 ug/L 200 1.40 U 85 75-125 Copper 180 10.0 ug/L 200 1.60 U 90 75-125 Lead 166 10.0 ug/L 200 3.10 U 83 75-125 Nickel 181 10.0 ug/L 200 2.20 U 90 75-125 Selenium 163 10.0 ug/L 200 6.20 U 82 75-125 Silver 181 10.0 ug/L 200 1.90 U 91 75-125 Vanadium 178 10.0 ug/L 200 1.40 U 89 75-125 Zinc 164 10.0 ug/L 200 4.40 U 82 75-125 Matrix Spike Dup (OD27009-MSD1) Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:31 Source: CD04204-08 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 24 20 QM-11 Barium 192 10.0 ug/L 200 1.10 U 96 75-125 4 20 Beryllium 18.6 1.00 ug/L 20.0 0.160 U 93 75-125 6 20 Cadmium 19.9 1.00 ug/L 20.0 0.360 U 100 75-125 19 20 Chromium 187 10.0 ug/L 200 1.40 U 93 75-125 4 20 Cobalt 201 10.0 ug/L 200 1.40 U 100 75-125 17 20 Copper 187 10.0 ug/L 200 1.60 U 94 75-125 4 20 Lead 197 10.0 ug/L 200 3.10 U 98 75-125 17 20 Nickel 189 10.0 ug/L 200 2.20 U 95 75-125 5 20 Selenium 197 10.0 ug/L 200 6.20 U 99 75-125 19 20 Silver 188 10.0 ug/L 200 1.90 U 94 75-125 4 20 Vanadium 186 10.0 ug/L 200 1.40 U 93 75-125 5 20 Zinc 200 10.0 ug/L 200 4.40 U 100 75-125 20 20 Post Spike (OD27009-PS1) Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:33 Source: CD04204-08 Spike Source Analvte Result Flaq POL Units Level Result %REC Arsenic 0.191 0.0100 mg/L 0.200 -0.0102 95 Barium 0.197 0.0100 mg/L 0.200 0.000222 98 Beryllium 0.0191 0.00100 mg/L 0.0200 -2.91E-6 96 Cadmium 0.0200 0.00100 mg/L 0.0200 2.79E-5 100 Chromium 0.191 0.0100 mg/L 0.200 -0.000232 96 %REC Limits RPD 80-120 80-120 80-120 80-120 80-120 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 22 (� �Eo www.encolabs.com QUALITY CONTROL DATA Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control Batch OD27OO9 - EPA 3OO5A - Continued Post Spike (OD27009-PS1) Continued Prepared: 04/27/2020 09:32 Analyzed: 05/07/2020 15:33 Source: CD04204-08 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes Cobalt 0.201 0.0100 mg/L 0.200 -0.000183 100 80-120 Copper 0.192 0.0100 mg/L 0.200 9.49E-5 96 80-120 Lead 0.198 0.0100 mg/L 0.200 -0.000187 99 80-120 Nickel 0.194 0.0100 mg/L 0.200 -0.00177 97 80-120 Selenium 0.196 0.0100 mg/L 0.200 -0.00762 98 80-120 Silver 0.189 0.0100 mg/L 0.200 0.00143 94 80-120 Vanadium 0.191 0.0100 mg/L 0.200 0.000772 95 80-120 Zinc 0.195 0.0100 mg/L 0.200 -0.000772 98 80-120 Volatile Organic Compounds by GCMS SIM Isotope Dilution - Quality Control Batch OD27O3O - EPA 5O3OB MS Blank (OD27030-BLK3) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 10:12 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 0.80 u 2.0 ug/L Toluene-d8 5.1 u9/L 5.00 102 75-125 LCS (OD27030-BSI) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 09:21 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 97 80-133 Toluene-d8 4.9 u9/L 5.00 96 75-125 Matrix Spike (OD27030-MS1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:14 Source: CD05203-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 24 2.0 ug/L 25.0 0.80 U 95 80-133 Toluene-& 5.2 u9/L 5.00 104 75-125 Matrix Spike Dup (OD27030-MSD1) Prepared: 04/27/2020 00:00 Analyzed: 04/27/2020 19:39 Source: CD05203-01 Spike Source %REC RPD Analvte Result Flaq POL Units Level Result %REC Limits RPD Limit Notes 1,4-Dioxane 25 2.0 ug/L 25.0 0.80 U 98 80-133 3 19 Toluene-& 4.9 u9/L 5.00 98 75-125 FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 19 Of 22 (� �Eo www.encolabs.com FLAGS/NOTES AND DEFINITIONS B The analyte was detected in the associated method blank. D The sample was analyzed at dilution. J The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL. N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a "tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. [CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses. QM-11 Precision between duplicate matrix spikes of the same sample was outside acceptance limits. QV-01 The associated continuing calibration verification standard exhibited high bias; since the result is ND, there is no impact. FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 20 of 22 r> m 3 m 3 n � x .ice � � m m 4 m 3 ap � D 3 r ?° n � m � � m � m FL Tl 7 ti 4 chi v Rl b m i m a a a II7 W �e W �e n m a s 0 v n ; CD x U � (D 3 CDW t� 3 m m C 7 fl) ro -a � - a � m � m I W W v Qj 0 d EL m 3 CD G�1 W W O W v m fi Pco '+ N Ccof!f =0 a z 0, �_ A W N3 -+ a C7 CD :D � x w Q n ^� q C) r i � O N ' o kP g c ti r C m 3 a CS m _ OL m C CD v � U 1 V iv Iti x x x x x Ix Ix 8260D Appendix 1,8280D SIM ID Ag,Ai.Ba,Be,Cd,Ca,Cr,CU,N 1,Ph,$h,Se, Se, T(, V,Zn o V C) o C N CD Cl X C)Ul A 3 � (D ° N CD a o aQi N CD m W Q Q o -Page 21 of 22 Sample Preservation Verification ENCO Cary Work Order: CDO5203 Project: White Street LP -Phase 1,11,111 SW Client: Golder Associates, Inc. (GO007) Project#: 1668421.107 Logged In: 23-Apr-20 10:57 ii44 Logged By: John C King II jj Preservation Check Performed By: '��t Date/Time: zU h I L-3D CD05203-01 Cont Type Pres (pH) Requirement pH Checked I In Control pH Adjusted Date/Time Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y 1 N/ NA Y 1 N 1 NA CD05203-02 Cant Type Pres (pH) Requirement p . H Checked l In Control pH Adjusted Datefrme Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y. / N / NA Y /, ! NA CDO5203-03 Cont Type Pres (pH) Requirement pH Checked ! In Control pH Adjusted DateMme Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 Y I N I NA Y I .N 1 NA CDO5203-04 Cont YP Type Pres (pH) Requirement pH Checked I In Control DatefTime pH Adjusted Adjusted Reagent Used/Comments A 250mLP+HNO3 <2 I N I NA Y I IJ / NA Rea ent Name ID 1 2 pH Strip ID: Qk ro Rea ent Name ID 3 4 Rea ent Name ID 5 6 Page 22 of 22 C:IELMNTIPrint4ko_PreservationCheck. rpt WORK ORDER Printed: 5/8/2020 3:48:57PM CD05203 ENCO Cary Sample Receipt Conditions Client: Golder Associates, Inc. (G0007) Lab Project Mgr: Daniel B. Mays Project: White Street LF-Phase I,II,III SW Project Number: 1668421.107 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: Timothy J. Parker Date Received: 23-Apr-20 10:21 Logged In By: John C King Date Logged In: 23-Apr-20 10:57 Work Order Comments: C-1935 received at 0.7°C Containers Intact Y Containers Properly Preserved Y Proper Containers Received Y All Samples in PreLog Received Y COC/Labels Agree Y Custody Seals Intact Y Volatile Containers Preserved Y Volatile Containers Headspace Free Y Aqueous Samples Checked for Residual Cl N Received On Ice Y Temperature Corrected Y Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: White Street Landfill — Phase I,II,III SW Project Reference Number. 19131339.101 Sampling Event Date: April 20 — 23, 2020 Review Date: May 13, 2020 Report #: CD05203 4 GOLDER Initials: DC Review: RK 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 I + Detects NC Appendix II NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW DC COC was properly signed by all parties. DC Correct project name and number are on the form. ➢ Incorrected project number on COC. Should be 19131339.101 DC Sample receipt condition at laboratory was acceptable. DC Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES DC Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL G 0 L D E R LABORATORY DATA REVIEW Page 2 of 3 Review Criteria Method Anal tes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW DC Laboratory analyzed at least one internal blank for each method, where applicable. DC Laboratory blank is interference -free. DC Surrogate recoveries are provided for each analytical method, where applicable. QV-01 was appended to samples 4103/12-SW1, 4103/12-SW2, 4103/12-SW3, 4103/12-SW4, and 4103/12- Trip Blank for analyses 1,2-Dichloroethane, Bromochloromethane, cis-1,3-Dichloropropene, Dibromomethane, lodomethane, and Trichlorofluoromethane because the associated continuing calibration verification standard exhibited high bias ; since the result is ND for the analyte there is no impact on data quality DC Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). DC MS/MSD/LCS data results are provided for each analytical method. DC MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). • QM-11 was appended to samples MSD1 sample for analysis Total because the precision between the duplicate matrix spikes of the same sample was outside acceptable limits 4.0 ANALYTE LISTS/METHODS DC The proper number of constituents are present for each analyte list as identified above (including detects where applicable). DC Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING DC All analytical reporting associated with the event was performed by the contracted lab. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL G 4 L D E R LABORATORY DATA REVIEW Page 3 of 3 *> DC Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been `flagged' with a `B' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 1 OX for commonly detected laboratory contaminants -acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. DC It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. ➢ Antimony and Thallium (2X) on all samples. DC The report provides the reporting limit for each constituent. DC The results were reported at or below their proper reporting limits (e.g., MDLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. DC No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Interim Maximum Allowable Concentrations (IMACs) in wells or field/equipment/trip blanks or above applicable Surface Water Standards for surface water points. ➢ Copper (NCSWS=2.7 uq/L (Chronic), 3.6ug/L (Acute)) • SWA @ 4.72 ug/L(J) • SW-3 @ 4.85 ug/L (J) • SW-4 @ 6.44 ug/L (J) ➢ Nickel (NCSWS=16 uq/L (Chronic), 140ug/L (Acute)) • SW-1 @ 36.8 ug/L DC No quantifiable inorganic or organic constituents were detected in a well or surface water point at concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). • Nickel in SW-1 DC Other report issues/Communications with laboratory/etc.: � GOLDER golder.com