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Home My WebLink About4103_Guilford_PhaseI_MSWLF_Fall2019GW_FID1389254_20200206ENR USE ONLY ❑Paper Report []Electronic Data - Email CD (data loaded: Yes / No Doc/Event #: NC DENR I IEnvironmental Monitoring Division of Waste Management - Solid Waste Reporting Form Notice: This form and any information attached to it are 'Public Records" as defined in NC General Statute 132-1. As such, these documents are available for inspection and examination by any person upon request (NC General Statute 132-6). Instructions: Prepare one form for each individually monitored unit. Please type or print legibly. Attach a notification table with values that attain or exceed NC 2L groundwater standards or NC 2B surface water standards. The notification must include a preliminary analysis of the cause and significance of each value. (e.g. naturally occurring, off -site source, pre-existing condition, etc.). Attach a notification table of any groundwater or surface water values that equal or exceed the reporting limits. Attach a notification table of any methane gas values that attain or exceed explosive gas levels. This includes any structures on or nearby the facility (NCAC 13B .1629 (4)(a)(i). Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCDENR-DWM, Solid Waste Section 1646 Mail Service Center, Raleigh, NC 27699-1646. Solid Waste Monitoring Data Submittal Information Name of entity submitting data (laboratory, consultant, facility owner): Golder Associates NC, Inc. on behalf of City of Greensboro Field Operations Department Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address: Name: David Y. Reedy II, PG Phone: (336) 852-4903 E-mail: dreedy@golder.com NC Landfill Rule: Actual sampling dates (e.g., Facility name: Facility Address: Facility Permit # (.0500 or. 1600) October 20-24, 2006) White Street Landfill - Phase 1 2503 White St, Greensboro, NC 27405 41-03 .1600 October 7 - 9, 2019 Environmental Status: (Check all that apply) Initial/Background Monitoring 0 Detection Monitoring ❑ Assessment Monitoring ❑ Corrective Action of data submitted: (Check all that apply) Groundwater monitoring data from monitoring wells ❑ Groundwater monitoring data from private water supply wells ❑ Leachate monitoring data Surface water monitoring data ❑ Methane gas monitoring data Corrective action data (specify) Other(specify) Notification attached? No. No groundwater or surface water standards were exceeded. X Yes, a notification of values exceeding a groundwater or surface water standard is attached. It includes a list of groundwater and surface water monitoring points, dates, analytical values, NC 2L groundwater standard, NC 2B surface water standard or NC Solid Waste GWPS and preliminary analysis of the cause and significance of any concentration. Yes, a notification of values exceeding an explosive methane gas limit is attached. It includes the methane monitoring points, dates, sample values and explosive methane gas limits. Certification To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct. Furthermore, I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards. I am aware that there are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment. David Y. Reedy II, PG Senior Hydrogeologist (336) 852-4903 Facilit ese ative Na nt) Title (Area Code) Telephone Number ,, _;,01 — _ Affix NC Licensed/ Professional Geologist Seal Golder Associates NC, Inc., 5B Oak Branch Drive, Greensboro, NC 27407 Facility Representative Address C-2862 NC PE Firm License Number (if applicable effective May 1, 2009) Revised 6/2009 GOLDER REPORT Second Semi -Annual 2019 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 1668421.106 February 6, 2020 February 6, 2020 Distribution List 1668421.106 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 February 6, 2020 Executive Summary 1668421.106 On behalf of the City of Greensboro, Golder Associates NC, Inc. (Golder) is submitting the enclosed Water Quality Monitoring Report, which documents the results of the October 7 - 9, 2019, semi-annual compliance monitoring event for Phase I at the White Street Landfill. Barium was detected at a concentration above NC 2L Standard and practical quantitation limit (PQL) at downgradient monitoring well 1-4. No other Resource Conservation and Recovery Act (RCRA) metals were detected above their respective PQLs and groundwater standards during the October 2019 event. During this event, benzene was detected at a concentration above NC 2L Standard and PQL in the sample from downgradient well 1-1. The constituent 1,4-dioxane was detected at downgradient wells 1-1, 1-2, 1-3, and 1-4 at concentrations above the PQL and NC 2L Standard; however, this parameter is not required by regulation or permit. No NC Appendix I constituents were reported above their respective PQLs and applicable surface water standards during the October 2019 event. Copper was reported at an estimated concentration below the PQL but above the chronic surface water standard in the sample from upstream monitoring point SW-3; the concentration is below the acute standard. Because the concentration is estimated below the PQL and the location is upstream with respect to the landfill, the exceedance does not appear to be related to landfill activities and no further action is warranted. Based on these results, the City of Greensboro will continue groundwater monitoring in accordance with the requirements outlined in NCSWMR 0.600 Rules. The next semi-annual monitoring event is tentatively scheduled for April 2020. 4 GOLDER February 6, 2020 Table of Contents 1.0 INTRODUCTION.............................................................................................................................................1 1.1 Site Description and Background.........................................................................................................1 1.2 Compliance Monitoring History............................................................................................................1 1.3 Hydrogeologic Setting..........................................................................................................................2 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION.............................................................3 2.1 Visual Inspection Program...................................................................................................................3 2.2 Well Network and Groundwater Elevation Measurements..................................................................3 2.3 October 2019 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...............................5 5.0 CONCLUSIONS..............................................................................................................................................5 6.0 REFERENCES................................................................................................................................................5 TABLES Table 1 Summary of Historical Groundwater Elevation Data Table 2 Summary of Estimated Horizontal Flow Velocities Table 3 Summary of Well Construction Information Table 4 Summary of Groundwater Monitoring Results, Detected Constituents Table 5 Summary of Groundwater Field Parameters Table 6 Summary of Surface Water Monitoring Results, Detected Constituents Table 7 Summary of Surface Water Field Parameters FIGURES Figure 1 Groundwater Surface Contour Map, October 7, 2019 Figure 2 Surface Water Location Map ►, GOLDER February 6, 2020 APPENDICES Appendix A Groundwater and Surface Water Sampling Logs 1668421.106 Appendix B October 2019 Groundwater Certificates -of -Analysis, Chain -of -Custody Forms and Laboratory Data Reviews 4GOLDER iv February 6, 2020 1668421.106 1.0 INTRODUCTION This report summarizes the monitoring results from the October 7 - 9, 2019, 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 III), and an active Type I compost facility. Phase II is currently in Assessment Monitoring and Corrective Action for several detected volatile organic constituents (VOCs) and inorganic constituents 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. The Phase I landfill is located southwest of the active Phase II landfill and northeast of the active Phase III landfill. The property also includes an active Type I compost facility located to the east of the Phase I landfill and south of the Phase II landfill. 1.2 Compliance Monitoring History Groundwater monitoring at the facility was initiated in 1994. The facility's approved monitoring network for the Phase I landfill is currently comprised of five groundwater monitoring wells, which monitor the uppermost aquifer beneath the facility. Monitoring well MW-13 is an upgradient background well for both the Phase I and the Phase II landfills. Monitoring wells 1-1, 1-2, 1-3, and 1-4 are downgradient compliance wells for the Phase I landfill. The monitoring well locations are shown on Figure 1. Phase I groundwater samples are analyzed for NC Appendix I VOCs and the eight RCRA metals semi-annually. y GOLDER February 6, 2020 1668421.106 The facility's monitoring network also includes five surface water monitoring points, which are shared with the Phase II landfill. Surface water monitoring points SW-1, SW-2, and SW-3 are upstream monitoring locations and SW-4 and SW-5 are downstream monitoring locations. Surface water point SW-1 is located along North Buffalo Creek, west of the facility, along Summit Avenue. Surface water point SW-2 is located west of the facility and collected from a tributary to North Buffalo Creek that flows from south to north. Surface water point SW-3 is located west of the facility, downstream of SW-1 and upstream of the confluence of North Buffalo Creek and the tributary from which SW-2 is sampled. Surface water point SW-4 is located downstream of the facility along North Buffalo Creek. Surface water point SW-5 is located within the facility's property, at the northern end of the Phase II landfill off of 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 October 2019 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 0.0188 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 4GOLDER February 6, 2020 1668421.106 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 253 feet/year toward the northwest, which is generally consistent with previous estimates (Table 2). The linear velocity equation above makes the simplified assumptions of a homogeneous and isotropic aquifer. Therefore, this equation represents a likely average value for the uppermost aquifer and does not account for heterogeneous and/or anisotropic conditions that may be present in the uppermost aquifer at the facility. 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION Field activities conducted as part of the October 2019 sampling event are discussed in the following sections. 2.1 Visual Inspection Program In order to detect a potential release at the earliest possible time, the visual inspection program is used at the Phase 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., Ieachate seeps), unexplained changes in soil characteristics, and any other change to the environment due to the waste management unit. During the October 2019 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 (I-1, 1-2, I-3, and 1-4). Available monitoring well construction information for the Phase I monitoring wells is summarized on Table 3, and the well locations are shown on Figure 1. The well locations were selected to yield groundwater samples representative of the conditions in the uppermost aquifer underlying the facility, and to monitor for potential releases from the landfill unit. Three upstream surface water monitoring points (SW-1, SW-2, and SW-3) and two downstream surface water monitoring points (SW-4 and SW-5) are also monitored. Depth -to -water measurements are recorded to the nearest 0.01 foot prior to initiating groundwater purging and sampling activities. The respective groundwater level elevations for this event are presented in Table 1. The historical water level data are also shown on this table. As presented, recent groundwater elevation data for the monitoring well network indicate that the hydraulic head level in the uppermost aquifer beneath the facility is fairly consistent, with temporal variation from the long-term average limited to approximately 5 - 20 feet (plus or minus) under normal conditions. 2.3 October 2019 Monitoring Event Personnel from Golder visited the facility from October 7 - 9, 2019, 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 y GOLDER February 6, 2020 1668421.106 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. 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. However, due to access limitations, SW-3 was collected by lowering a bailer into the stream from a bridge and then filling the sample containers directly from the bailer. Measurements of temperature, pH, specific conductivity, turbidity, dissolved oxygen, and oxygen reduction potential were measured directly from the stream and recorded during the collection of the surface water samples. After collection, the surface water samples were placed in a cooler on ice, under chain -of -custody control. Copies of the sampling logs are presented in Appendix A. Included in each log is a description of the sampling equipment, sampling location, sampling method, field observations, and water quality measurements. 2.4 Laboratory Analysis Program The October 2019 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 needed. 4.0 DATA EVALUATION The results of the data evaluations are presented in the following sections. y GOLDER February 6, 2020 1668421.106 4.1 North Carolina Groundwater and Surface Water Quality Standard Comparisons As presented in Table 4, barium was detected at a concentration above the practical quantitation limit (PQL) and NC 2L Standard in the sample from downgradient monitoring well 1-4. No other Resource Conservation and Recovery Act (RCRA) metals were detected above their PQLs and groundwater standards during the October 2019 event. During this event, benzene was detected at a concentration above the PQL and NC 2L Standard in the sample from downgradient well 1-1. 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; however, this parameter is not required by regulation or permit. As shown in Table 6, no NC Appendix I constituents were reported above their respective PQLs and applicable surface water standards during the October 2019 event. Copper was reported at an estimated concentration below the PQL but above the chronic surface water standard in the sample from upstream monitoring point SW-3; the concentration was below the acute standard. Because the concentration is estimated below the PQL and the location is upstream with respect to the landfill, the exceedance does not appear to be related to landfill activities and no further action is warranted. Z).0 CONCLUSIONS Based on the results summarized herein, the City of Greensboro will continue monitoring the uppermost aquifer beneath this facility in accordance with the requirements outlined in NCSWMR 0.600. The next sampling event is tentatively scheduled for April 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. 4GOLDER 5 February 6, 2020 1668421.106 Signature Page Golder Associates NC, Inc. David "Dusty" Y. Reedy II, PG Senior Hydrogeologist Rachel P. Kirkman, PG Associate and Senior Consultant Engineering Lic. No. C-2862/Geology Lic. No. C-399 Golder Associates NC, Inc. is a licensed user of the Golder trademark, and an associated operating entity. Golder and the G logo are trademarks of Golder Associates Corporation. g:\projects\city of greensboro\1668421 - greensboro)phase 106 - 2nd sa wqm 2019 new\200 deliverables\252 final issuefthase i\1668421.106-001-r-rev0-phase_i.dou 4 GOLDER 6 Tables February 2020 1668421.106 Summary ofHistorical Groundwater Elevation Data White Street Landfill ' Phase |. Permit No. 41'ou Greensboro, North Carolina Notes: 1. ftAIVISL=feet above mean sea level. 2. —=motmnasumdornodata 3. TOC=top ofcasing 4. N|=not installed 5. MVV=monitoring well 6. TOCand Water Elevation Data for dates prior voApril 2O17from historical G&ME.Inc. Ground and Surface 7 `m~nTOCsumnyoonducted2O13'2O14byS&ME.|ncformomacourateo|ovaUonn. February 2020 TABLE 2 Summary of Estimated Horizontal Flow Velocities White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 1668421.106 October 2019 Gradient Gradient Gradient Horizontal Hydraulic Flow Segment Effective Porosity Velocity Calculation Direction Segment Length Elevations Gradient (ne) Conductivity (VgW, feet/year) Segment (feet) (i, feet) (K, cm/sec) fee t i Northwest 1579 -------- 690-------- 0.0190 0.02 2.61 E-04 257 i 2 North -Northwest 1620 -------- 690-------- 0.0185 0.02 2.61 E-04 250 Average i Average VFW 0.0188 253 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 G 0 L D E P 10f1 February 2020 TABLE 3 Summary of Well Construction Information White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina 1668421.106 Top -of - Well Well Monitoring Well Casing Screened Interval Geology of Screened Well Identification Northing Easting Date of Construction Elevation Depth Diameter (ft bgs) Interval Status (ft AMSL) (feet) (inches) 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 07114/89 741.24 34 2 19 34 Sandy Silt Active Notes: 1. It AMSL= feet above mean sea level 2. It bgs = feet below ground surface 3. MW = monitoring well 4. PWR = partially weathered rock 5. Unless otherwise noted, well construction survey information, Water Quality Monitoring Reports and Water Quality Monitoring Plans provided by Survey Solutions S&ME. GOLDER 10f1 February 2020 TABLE 4 1668421.106 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 1 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 1 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 1 ND ND ND ND ug/L 10/24/12 2.8 10 3.75 J 4.25 1 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 1 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 1 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 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 1.10 10.0 -- 89.0 648 444 135 795 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 0.360 1.00 ND ND ND ND ND ND GOLDER 1of8 February 2020 TABLE 4 1668421.106 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 1 44.2 12.8 52.5 ND ug/L 10/07/09 1 10 ND ND 20.1 10.4 52.9 ND ug/L 04/28/10 1 10 ND 1.52 1 6.17 J 4.75 1 37.4 ND ug/L 10/11/10 1 10 ND ND 11.2 3.40 1 71.4 ND ug/L 05/10/11 1 10 ND 5.13 1 73.8 15.1 109 ND ug/L 10/06/11 1 10 1.27 J 2.33 1 12.8 9.49 1 36.4 ND ug/L 04/16/12 1 10 ND 5.39 1 19.6 14.1 64.0 ND ug/L 10/24/12 1 10 ND 2.34 1 42.2 8.00 1 51.6 ND ug/L 04/24/13 1.4 10 1.74 J ND 21.8 2.79 1 39.3 ND ug/L 09/10/13 1.4 10 ND ND 2.06 J 5.05 1 6.3 J ND ug/L 04/22/14 1.4 10 ND 2.52 1 8.14 J 5.49 1 12.2 ND ug/L 10/06/14 1.4 10 ND 2.59 1 12.8 6.34 1 5.58 J ND ug/L 04/07/15 1.4 10 ND 3.97 1 20.0 9.33 1 9.31 J ND ug/L 10/07/15 1.4 10 ND 2.66 1 29.9 7.78 1 4.61 J ND ug/L 04/26/16 1.4 10 ND ND 3.57 J 1.56 1 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 1 2.45 J ND ug/L 10/17/17 1.4 10 ND 3.94 1 5.66 J 4.38 1 2.36 J ND ug/L 04/16/18 1.4 -- 10 ND 1.76 1 12.6 3.90 1 2.70 J ND ug/L 10/18/18 1.4 10.0 -- ND 2.48 1 5.02 J 5.34 1 2.87 J ND ug/L 04/08/19 1.4 10.0 ND 2.40 1 6.88 J 3.39 1 1.94 J ND ug/L 10/09/19 1.40 10.0 -- ND 1.83 1 ND 3.98 1 ND 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 1 12.4 3.7 J 19 ND ug/L 10/07/09 1.9 10 ND ND 3.31 J 2.44 1 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 1 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 1 11.2 2.79 1 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 1 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 1 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 3.10 10.0 -- ND ND ND 3.28 1 ND ND Mercury ug/L 03/01/00 -- -- 0.5 ND ND ND ND ND ND NC 2L = 1 ug/L ug/L 09/01/00 0.5 ND ND ND ND ND ND EPA MCL = 2 ug/L ug/L 03/01/01 0.5 ND ND ND ND ND ND ug/L 09/01/01 0.5 ND ND ND ND ND ND ug/L 03/01/02 0.5 ND ND ND ND ND ND ug/L 09/01/02 0.5 ND ND ND ND ND ND ug/L 04/01/03 0.5 ND 2.4 ND ND ND ND ug/L 10/01/03 0.5 ND ND ND ND ND ND ug/L 03/01/04 0.5 ND 2.4 ND ND ND ND ug/L 09/01/04 0.5 ND 0.9 ND ND ND ND ug/L 05/01/05 0.5 ND ND ND ND ND ND ug/L 10/01/05 0.5 ND ND ND ND ND ND ug/L 04/01/06 0.5 ND ND ND ND ND ND ug/L 10/01/06 0.5 ND ND ND ND ND ND ug/L 04/10/07 -- -- 0.14 1 ND ND ND ND ug/L 09/25/07 -- -- 0.11 3.96 ND ND ND ND ug/L 05/02/08 0.11 0.2 ND 0.45 ND ND ND ND ug/L 12/05/08 0.11 0.2 ND ND ND ND ND ND ug/L 04/16/09 0.11 0.2 0.34 ND ND ND ND ug/L 10/07/09 0.054 0.2 ND 0.0867 1 ND ND 0.0638 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 1 ND ND ND ND ug/L 10/17/17 0.17 0.2 ND 0.667 ND ND ND ND ug/L 04/16/18 0.17 -- 0.2 ND 0.283 ND ND ND ND ug/L 10/18/18 0.15 0.200 -- 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 0.150 0.200 ND ND ND ND ND ND GOLDER 2of8 February 2020 TABLE 4 1668421.106 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 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 6.20 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 1 2.1 J 5 1 ND ND ug/L 10/07/09 1.9 10 ND 2.34 1 3.35 J 3.53 1 2.44 J ND ug/L 04/28/10 1.9 10 ND 5.16 1 6.91 J 5.57 1 2.93 J ND ug/L 10/11/10 1.9 10 ND 2 1 ND 3.56 1 ND ND ug/L 05/10/11 1.9 10 ND 2.04 1 ND 3.07 1 3.11 J ND ug/L 10/06/11 1.9 10 ND ND ND 1.92 1 1.9 J ND ug/L 04/16/12 1.9 10 ND 3.7 1 4.39 J 4.54 1 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 1 2.96 J 4.42 1 ND ND ug/L 09/10/13 1.9 10 ND ND 2.16 J 2.59 1 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 1 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 1 ND 2.66 1 ND ND ug/L 10/17/17 1.9 10 ND ND ND ND ND ND ug/L 04/16/18 1.9 -- 10 ND ND ND ND 2.23 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 1.90 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 4.40 10.0 8.73 J 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 1 1.4 J ND ug/L 09/25/07 -- -- 3.8 B 5.8 1 7.1 J 9.1 1 20 J ND ug/L 05/02/08 0.62 100 ND ND ND ND ND ND ug/L 12/05/08 1.5 100 ND 0.37 6.4 J 5.6 1 6.1 J ND ug/L 04/16/09 1.5 100 15 1 ND ND ND ND ug/L 10/07/09 2.8 55 ND ND ND ND ND ND ug/L 10/14/09 1.5 100 ND ND ug/L 04/28/10 1.5 100 ND ND ND ND ND ND ug/L 10/11/10 1.5 100 ND ND ND ND ND ND ug/L 05/10/11 1.2 100 ND ND ND ND 4.1 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 1 ND ND ND ND ug/L 10/24/12 1.2 100 ND 12 1 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 1 ug/L 10/17/17 10 100 ND ND ND ND ND ND ug/L 04/16/18 10 -- 100 ND ND ND ND 14 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 GOLDER 3of8 February 2020 TABLE 4 1668421.106 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 Benzene ug/L 03/01/00 5 ND ND ND ND ND ND NC 2L = 1 ug/L ug/L 09/01/00 5 ND ND ND ND ND ND EPA MCL = 5 ug/L ug/L 03/01/01 5 ND ND ND ND ND ND ug/L 09/01/01 5 ND ND ND ND ND ND ug/L 03/01/02 5 ND ND ND ND ND ND ug/L 09/01/02 5 ND ND ND ND ND ND ug/L 04/01/03 5 ND ND ND ND ND ND ug/L 10/01/03 5 ND ND ND ND ND ND ug/L 03/01/04 5 ND ND ND ND ND ND ug/L 09/01/04 5 ND ND ND ND ND ND ug/L 05/01/05 5 ND ND ND ND ND ND ug/L 10/01/05 5 ND ND ND ND ND ND ug/L 04/01/06 5 ND ND ND ND ND ND ug/L 10/01/06 5 ND ND ND ND ND ND ug/L 04/10/07 -- ND ND ND ND ND ND ug/L 09/25/07 -- -- ND 1.3 ND 0.5 1 0.5 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 1 ND ND ug/L 04/16/09 0.2 1 ND ND ND ND ND ug/L 10/07/09 0.2 1 ND 1.6 ND 0.51 1 ND ND ug/L 04/28/10 0.05 1 ND 1.7 ND ND ND ND ug/L 10/11/10 0.2 1 ND 1.5 ND 0.49 1 ND ND ug/L 05/10/11 0.68 1 ND 2.7 ND ND ND ND ug/L 10/06/11 0.68 1 ND 1.8 ND ND ND ND ug/L 04/16/12 0.15 1 ND 2.8 ND ND ND ND ug/L 10/24/12 0.15 1 ND 2.2 0.15 0.44 1 0.15 ND ug/L 04/24/13 0.25 1 ND 3.5 ND 0.34 1 ND ND ug/L 09/10/13 0.15 1 ND 3.0 ND ND ND ND ug/L 04/22/14 0.15 1 ND 3.5 ND ND ND ND ug/L 10/06/14 0.15 1 ND 3.9 0.54 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 1 ND ND ug/L 04/26/16 0.15 1 ND 3.9 ND ND ND ND ug/L 09/28/16 0.15 1 ND 4.3 ND 0.52 1 ND ND ug/L 04/27/17 0.15 1 ND 5.4 ND ND ND ND ug/L 10/17/17 0.15 1 ND 4.4 ND ND ND ND ug/L 04/16/18 0.15 -- 1 ND 5.0 ND ND ND ND ug/L 10/18/18 0.15 1.0 -- ND 2.9 ND ND ND ND ug/L 04/08/19 0.15 1.0 ND 5.6 ND ND ND ND ug/L 10/09/19 0.15 1.0 ND 4.8 ND ND ND ND 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 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 GOLDER 4of8 February 2020 TABLE 4 1668421.106 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 1 4.2 ND ND ND ug/L 05/02/08 0.27 3 ND 4.6 5.8 9.8 9.4 ND ug/L 12/05/08 0.27 3 ND 0.38 1.8 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 Chloroethane ug/L 03/01/00 -- -- 10 ND ND ND ND ND NC 2L = 3000 ug/L ug/L 09/01/00 10 ND ND ND ND ND (No EPA MCL) ug/L 03/01/01 10 ND ND ND ND ND ug/L 09/01/01 10 ND ND ND ND ND ug/L 03/01/02 10 ND ND ND ND ND ug/L 09/01/02 10 ND ND ND ND ND ug/L 04/01/03 10 ND ND ND ND ND ug/L 10/01/03 10 ND ND ND ND ND ug/L 03/01/04 10 ND ND ND ND ND ug/L 09/01/04 10 ND ND ND ND ND ug/L 05/01/05 10 ND ND ND ND ND ug/L 10/01/05 10 ND ND ND ND ND ug/L 04/01/06 10 ND ND ND ND ND ug/L 10/01/06 10 ND ND ND ND ND ug/L 04/10/07 -- ND ND ND ND ND ug/L 09/25/07 -- -- ND ND ND ND ND ug/L 05/02/08 0.3 10 ND ND ND ND ND ug/L 12/05/08 0.3 10 ND 1.8 1 ND ND ND ug/L 04/16/09 0.3 10 ND ND ND ND ug/L 10/07/09 0.3 10 ND ND ND ND ND ug/L 04/28/10 0.18 10 ND ND ND ND ND ND ug/L 10/11/10 0.3 10 ND ND ND ND ND ND ug/L 05/10/11 0.75 10 ND ND ND ND ND ND ug/L 10/06/11 0.75 10 ND ND ND ND ND ND ug/L 04/16/12 0.23 10 ND ND ND ND ND ND ug/L 10/24/12 0.23 10 ND ND ND ND ND ND ug/L 04/24/13 0.53 10 ND ND ND ND ND ND ug/L 09/10/13 0.23 10 ND ND ND ND ND ND ug/L 04/22/14 0.23 10 ND ND ND ND ND ND ug/L 10/06/14 0.23 10 ND ND ND ND ND ug/L 04/07/15 0.23 10 ND ND ND ND ND ug/L 10/07/15 0.23 10 ND ND ND ND ND ug/L 04/26/16 0.23 10 ND ND ND ND ND ug/L 09/28/16 0.23 10 ND ND ND ND ND ug/L 04/27/17 0.23 10 ND ND ND ND ND ND ug/L 10/17/17 0.23 10 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 10 ND ND ND ND ND ND ug/L 10/18/18 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.23 1.0 ND ND ND ND ND ND ug/L 10/09/19 0.23 1.0 ND ND ND ND ND ND ug/L 10/09/19 0.66 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 1 0.60 J ND ug/L 09/25/07 -- -- ND ND 1.2 J 0.79 1 0.48 J ND ug/L 05/02/08 0.27 5 ND ND 1 J 0.49 1 ND ND ug/L 12/05/08 0.27 5 ND 0.42 ND 0.75 1 ND ND ug/L 04/16/09 0.27 5 ND 1.1 J 0.59 1 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 1 ND ND ug/L 04/16/12 0.19 5 ND ND 0.78 J 0.45 1 ND ND ug/L 10/24/12 0.19 5 ND ND 0.56 J 0.81 1 ND ND ug/L 04/24/13 0.39 5 ND ND ND 0.59 1 ND ND ug/L 09/10/13 0.19 5 ND ND 0.85 J 0.67 1 0.41 J ND ug/L 04/22/14 0.19 5 ND ND 0.92 J 0.55 1 ND ND ug/L 10/06/14 0.19 5 ND ND 1.3 ND ND ND ug/L 04/07/15 0.19 5 ND 0.41 1 1.3 J 0.7 1 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 1 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 1 ND ND ND ND ug/L 10/09/19 0.19 1.0 ND ND 1.0 0.58 1 ND ND GOLDER 5of8 February 2020 TABLE 4 1668421.106 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 1,4-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 1 3.1 ND ug/L 10/09/19 0.19 1.0 ND 5.8 ND 3.1 2.3 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 1 ND 1.6 J ND ND ug/L 09/25/07 -- -- ND 1.7 1 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 1 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 1 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 1 ND 2.3 J ND ND ug/L 04/24/13 0.28 5 ND 0.71 1 ND 1.9 J ND ND ug/L 09/10/13 0.13 5 ND 0.67 1 0.13 2.2 J ND ND ug/L 04/22/14 0.13 5 ND 0.56 1 ND 1.2 J ND ND ug/L 10/06/14 0.13 5 ND 0.74 1 ND 1.5 ND ND ug/L 04/07/15 0.13 5 ND ND ND 1.5 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 1 ND 2.0 J ND ND ug/L 09/28/16 0.13 5 ND 0.86 1 ND 2.9 J ND ND ug/L 04/27/17 0.13 5 ND 0.47 1 ND 1.6 J ND ND ug/L 10/17/17 0.13 5 ND 0.52 1 ND 2.6 J ND ND ug/L 04/16/18 0.13 -- 5 ND 0.50 1 ND 1.3 J ND ND ug/L 10/18/18 0.13 1.0 -- ND 0.51 1 ND 1.8 ND ND ug/L 04/08/19 0.13 1.0 ND ND ND ND ND ND ug/L 10/09/19 0.13 1.0 ND 0.41 1 ND 2.2 ND ND 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 GOLDER 6of8 February 2020 TABLE 4 1668421.106 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 1 ND ND ug/L 05/02/08 0.2 5 ND ND ND ND ND ND ug/L 12/05/08 0.24 5 ND 0.65 ND 0.56 1 ND ND ug/L 04/16/09 0.24 5 ND ND ND ND ND ug/L 10/07/09 0.24 5 ND ND ND 0.46 1 ND ND ug/L 04/28/10 0.15 5 ND ND ND ND ND ND ug/L 10/11/10 0.24 5 ND ND ND 0.48 1 ND ND ug/L 05/10/11 0.6 5 ND ND ND ND ND ND ug/L 10/06/11 0.6 5 ND ND ND ND ND ND ug/L 04/16/12 0.21 5 ND ND ND ND ND ND ug/L 10/24/12 0.21 5 ND ND ND 0.4 J ND ND ug/L 04/24/13 0.31 5 ND ND ND 0.37 1 ND ND ug/L 09/10/13 0.21 5 ND ND ND 0.47 1 ND ND ug/L 04/22/14 0.21 5 ND ND ND ND ND ND ug/L 10/06/14 0.21 5 ND ND ND ND ND ND ug/L 04/07/15 0.21 5 ND ND ND ND ND ND ug/L 10/07/15 0.21 5 ND ND ND ND ND ND ug/L 04/26/16 0.21 5 ND ND ND ND ND ND ug/L 09/28/16 0.21 5 ND ND ND 0.8 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 1 ND ND ug/L 04/16/18 0.21 -- 5 ND ND ND ND ND ND ug/L 10/18/18 0.21 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.21 1.0 ND ND ND ND ND ND ug/L 10/09/19 0.21 1.0 ND ND ND 0.64 1 ND ND 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 1 ND ND ug/L 09/25/07 -- -- ND 2.2 1 0.45 J 1.3 1 0.14 ND ug/L 05/02/08 0.30 5 ND 1.3 1 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 1 0.58 J 0.67 1 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 1 0.55 J 0.63 1 ND ND ug/L 10/24/12 0.15 5 ND 0.62 1 ND 0.8 J ND ND ug/L 04/24/13 0.27 5 ND 0.73 1 ND 0.85 1 ND ND ug/L 09/10/13 0.15 5 ND 0.98 1 0.48 J 0.87 1 ND ND ug/L 04/22/14 0.15 5 ND 0.52 1 ND ND ND ND ug/L 10/06/14 0.15 5 ND 0.61 1 ND ND ND ND ug/L 04/07/15 0.15 5 ND 0.44 1 ND 0.52 1 ND ND ug/L 10/07/15 0.15 5 ND 0.94 1 0.41 J 0.87 1 ND ND ug/L 04/26/16 0.15 5 ND 0.51 1 ND 0.43 1 ND ND ug/L 09/28/16 0.15 5 0.15 0.77 1 ND ND ND ND ug/L 04/27/17 0.15 5 ND 0.57 1 ND 0.49 1 ND ND ug/L 10/17/17 0.15 5 ND 0.47 1 ND 0.64 1 ND ND ug/L 04/16/18 0.15 -- 5 ND 0.56 1 ND ND ND ND ug/L 10/18/18 0.15 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.15 1.0 ND 0.65 1 ND ND ND ND ug/L 10/09/19 0.15 1.0 -- ND 0.57 1 0.41 J 0.51 1 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 1 ND ND 0.088 ND ug/L 09/25/07 -- -- ND ND ND ND ND ND ug/L 05/02/08 0.24 1 ND ND ND ND ND ND ug/L 12/05/08 0.53 1 ND ND ND ND ND ND ug/L 04/16/09 0.53 1 ND ND ND ND ND ug/L 10/07/09 0.53 1 ND 0.76 1 ND ND ND ND ug/L 04/28/10 0.07 1 ND ND ND ND ND ND ug/L 10/11/10 0.53 1 ND 0.77 1 ND ND ND ND ug/L 05/10/11 0.14 1 ND ND ND ND ND ND ug/L 10/06/11 0.14 1 ND ND ND ND ND ND ug/L 04/16/12 0.23 1 ND 0.37 1 ND ND ND ND ug/L 10/24/12 0.23 1 ND ND ND ND ND ND ug/L 04/24/13 0.50 1 ND ND ND ND ND ND ug/L 09/10/13 0.23 1 ND ND ND ND ND ND ug/L 04/22/14 0.23 1 ND ND ND ND ND ND ug/L 10/06/14 0.23 1 ND ND ND ND ND ND ug/L 04/07/15 0.23 1 ND ND ND ND ND ND ug/L 10/07/15 0.23 1 ND ND ND ND ND ND ug/L 04/26/16 0.23 1 ND ND ND ND ND ND ug/L 09/28/16 0.23 1 ND ND ND ND ND ND ug/L 04/27/17 0.23 1 ND ND ND ND ND ND ug/L 10/17/17 0.23 1 ND ND ND ND ND ND ug/L 04/16/18 0.23 -- 1 ND ND ND ND ND ND ug/L 10/18/18 0.23 1.0 -- ND ND ND ND ND ND ug/L 04/08/19 0.23 1.0 ND ND 0.78 B ND ND 0.5 1 ug/L 10/09/19 0.23 1.0 ND ND ND ND ND ND GOLDER 7of8 February 2020 TABLE 4 1668421.106 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 O5/01/05 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 O5/02/08 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 O5/10/11 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 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 Notes: mg/L = milligrams per liter ug/L = micrograms per liter NC 2L = North Carolina Water Quality Standard EPA MCL = United States Environmental Protection Agency Maximum Contaminant Limit J = Prior to the 11/18 event, J flags are estimated values below the SWS Reporting limit. Starting with the 11/18 event, J flags are estimated values between MDL and PQL. B = blank -qualified data ND = not detected above the laboratory detection limit or stated reporting limit = no data available or no limit established # = EPA Action Level = EPA Secondary MCL Blanks = field, trip and method blanks Bold = concentrations above applicable IMAC and/or NC 2L have been bolded. Shaded = concentrations above applicable EPA MCL have been shaded. MDL = laboratory method detection limit Data prior to April 2017 provided by SBME Engineering Laboratory method blank data was unavailable prior to April 2017. However, B flags for the 04/16/09, 10/07/09, and 10/11/10 were present on laboratory electronic files. The following dilutions were noted for the October 2019 event: 1,4-dioxane by 5x (1-2) and 10X (1-1 and 1-3), antimony and thallium by 2x (all points). SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting on 01/18/07 GOLDER 8ofa February 2020 1668421.106 TABLES Summary of Groundwater Field Parameters While SUe Landfill- Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Monitoring Reporting Sample U radiant Well Down radiant Well, Con,tit-tip rameter Unib Date MW-13 1-1 I-2 13 Id pH (Field) S.U. 03127/00 6.61 6.31 6.69 ].1] 8.6] S.U. 09/13/00 15.70 6.59 5.84 6.68 6.49 S.U. 03112/01 8.55 5.62 6.19 6.34 -- S.U. 09/13/01 6.29 5.58 S.01 6.25 6.80 S.U. 03107/02 ].48 5.59 6.02 6.28 8.60 S.U. 09/18/02 6.44 5.]] 6.08 6.36 6.64 S.U. 04115/03 -- 8.08 6.39 6.61 8.]1 S.U. 10/15/03 6.15 5.09 6.31 6.64 6.15 S.U. 03126/04 8.02 ].80 ].81 ].80 8.17 S.U. 09/22/04 6.96 5.94 6.]6 6.60 6.96 S.U. 05110/05 8.58 8.03 8.14 8.2] 8.50 S.U. 10/11/05 6.5 5.54 5.95 6.18 6.60 S.U. 04124/06 -- 5.65 6.21 6.60 8.89 S.U. 10/16/06 -- 5.49 5.96 6.19 6.60 S.U. 04110/07 6.35 5.62 8.19 6.68 8.95 S.U. 09/25/07 6.49 5.64 6.18 6.36 6A9 S.U. 05102/08 6.48 5.60 8.31 6.61 ].01 S.U. 12105/08 ].29 5.80 6.63 6.50 ].07 S.U. 04116/09 ].29 6.60 6.82 ].it ].46 S.U. 10/07/09 9.16 1.44 ].91 8.15 8.81 S.U. 04128/10 8.8 5.6] 6.08 6.30 6.]8 S.U. 10/05/10 ].5 6.38 6.94 ].O6 ].55 S.U. 05110/11 7.35 8.3] ].98 8.55 S.U. 10/06/11 ].61 6.14 ].12 6.89 7.69 S.U. 04116/12 ].83 8.40 7.03 7.481 ].8] S.U. 10/24/12 ].88 1.49 8.25 1.66 8.59 S.U. 04124/13 8.29 ].0] 8.05 8.00 8.]] S.U. 09/09/13 8.33 6.76 ].22 7.31 8.12 S.U. 04122/14 8.4 5.55 8.84 ].03 8.52 S.U. 10/01/14 ].696.670 6.85 7.43 S.U. 04107/15 6.]6 5.82 8.15 6.33 8.8] S.U. 10/06/15 6.47 5.48 5.89 5.9] 6.35 S.U. 04118/16 6.36 5.87 8.19 6.38 8.82 S.U. 09/26/16 6.54 5.64 5.99 6.11 6.51 S.U. 04125/17 6.46 5.82 8.25 6.32 8.]3 S.U. 10/16/17 6.55 5.15 6.28 6.22 6.68 S.U. 04116/18 6.50 5.]0 8.09 6.31 8.66 S.U. 10/18/18 6.39 5.84 6.08 6.21 6.]0 S.U. S.U. 04I08/19 10/09/19 8.6] 6.43 5.]8 5.75 8.53 6.16 6.% 6.20 8.]9 6.67 S-Ifc Conductance Meld) .811m 03127/00 353 8]] 1381 1687 1989 uS/cm 0911.0 335 e]i 1485 660 875 .811m 03112/01 7520 U.- 09113/01 88838 73234 6W39 71673 65394 .811m 03107/02 676 1692 2240 2127 3445 U.- 09/18/02 658 1619 2300 2913 2319 u5lcm 04115/03 1650 14M 2040 1950 2= 101 5/03 480 1650 1890 2640 2720 uSlcm 03126/04 428 1650 1990 624 2890 u5lcm 09/22/04 4l2 1690 1119 2]20 1094 uSlcm 05110/05 434 1510 2030 2570 5580 u5lcm 10/i 1/05 576 1930 2430 3020 1700 u5lcm 04124/06 -- 2080 2590 3010 3010 2= 10/16/06 -- 2090 250 3020 2600 uSlcm 04110/07 514 219 252 289 267 ,= 09/25/07 582 2210 2570 3170 2570 uSlcm 05102/08 45.7 289 270 295 267 u5lcm 12105/08 5390 2490 1410 3470 2200 u5lcm 04116/09 539 3" 2290 2]60 2420 2= 10/07/09 552 2580 2720 3410 2160 uSlcm 04128/10 439 2220 2270 2840 1840 ,= 10/05/10 446 2240 2380 3000 630 uSlcm 05110/11 3010 1020 26]0 1980 u5lcm 10/06/11 447 2620 1290 2980 1270 uSlcm 04116/12 416 3060 2230 2680 1960 U.- 10/24/12 399 3270 280 2910 2030 u51cm 04126/13 410 3210 1336 2]60 1880 U.- 09/09/13 414 3280 2370 2900 1840 u51cm 04122/14 395 3300 2930 2" 2010 U.- 10/01/14 425 3400 2580 3320 193 u51cm 04107/15 268 2140 1810 1920 1260 U.- 10/06/15 304 2341 2017 2424 1239 u51cm 04118/16 323 2515 1803 1798 1338 U.- 09/26/16 340 2587 2016 2324 1No u51cm 04125/17 362 319] 1039 2654 1286 U.- 10/16/17 36] 3260 189] 2843 1706 u5lcm 04118/18 321 2992 2089 2226 1633 2= 10I18/18 317 2662 1985 2146 1363 uS/cm 04/08/19 368 3111 895 1301 1813 uSlcm 10109/12 287 2937 1892 2475 1834 Tempemture(Fleld) °C 03127/00 14.30 13.95 15.60 16.57 11.82 °c 09/13/00 15.70 17.43 18.05 i1.22 17.91 °C 03112/01 15.04 13.65 15.04 id.]5 -- °c 0913/01 15.13 18.52 18.86 1728 19.88 °C 03107/02 14.25 13.33 13.83 16.22 11.08 °c 09/18/02 10.56 12.05 12.80 11.62 12.9] °C 04115/03 -- 13.83 14.52 15.71 12.18 °c 1015/03 14.6] 16.45 11.50 16.33 1].1] °C 03126/04 14.42 13.1] 14.11 13.]2 10.83 °c 09I22104 16.30 15.95 1].i] 15.]2 1].61 °C 05I10/05 19.24 1].81 20.04 18.42 20.55 °c 10/11/05 12.80 18.38 19.14 19.47 19.14 °C 04124/06 - 15.69 17.92 19.35 15.53 °c IV6/06 -- 15.79 16.82 16.15 17.20 °C 04I10/0] 14.57 15.93 15.]9 16.05 13.48 °c 09I25/0] 23.41 22.48 24.49 19.37 21.12 °C 05102/08 14.55 18.]0 21.71 19.93 20.64 °c 12105/08 14.53 11.64 12.02 12.46 11.01 °C 04116/09 14.53 id.]6 16.12 id.]6 13.94 °c 1010]/09 13.65 18.32 19.72 18.38 20.45 °C 04128/10 14.56 id.]0 16.97 13.99 14.56 °c 10I0510 18.37 18.19 11.54 18.28 1].41 °C 05I10/11 - 19.]] 21.08 19.8] 18.46 °C 10/06/11 18.70 20.90 20.23 18.60 19.28 °C 04116/12 14.07 19.88 22.31 20.35 20.01 °c 10/24/12 12.98 12290 19.12 20.00 19.20 °C 04126/13 13.74 18.]] 18.1] 1].81 11.65 °c 09/09/13 23.09 18.62 25.21 19.86 20.92 °C 04122/14 16.52 19.69 26.28 21.]] 10.79 °c 1011/14 ll.86 1].04 18.64 i1.64 18.84 °C 04107/15 13.96 18.12 15.98 15.68 18.22 °c 10/06/15 15.81 1].01 16.63 14.50 1].89 °c 04/18/16 16.29 18.46 18.34 13.91 16.12 °c 09/26/16 18.06 2033. 23.90 20.57 21.39 °c 0415/17 14.35 14.]8 16.55 15.23 15.11 °c 10/16/17 14.]] 15.93 17.89 16.67 18.34 °c 041 6/18 14.3 12.] 14.9 14.9 14.5 °c 10/i 8/18 16.3 15.9 18.4 16.3 18.7 °c 0418/19 15.] 13.9 15.5 15.4 14.9 °c 10/09/19 1].] 11.0 20.0 16.5 19.9 GOLDER 1 of2 February 2020 1668421.106 TABLES Summary of Groundwater Field Parameters While SUe Landfill- Phase I, Permit No. 41-03 Greensboro, North Carolina Deteeted Monitoring Reporting Sample U radiant Well own ra Ddiant Wells ram Constit-tip eter Unite Date MW-13 1-1 1-2 13 Id TurbidiN (Field) NTU 05110/05 1.01 3.97 250 36.8 5ld NTU 10/11/05 10.0 3.02 411 126 551 NTU 04124/06 -- ].18 250 39 1 NTU 10/16/06 -- 1.78 200 23.4 493 NTU 04110/07 -- - -- - -- NTU 09/25/07 -- - -- - -- NTU 05102/08 - -- - -- NTU 12105/08 442 - -- - -- NTU 04116/09 -- - -- - -- 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 05110/11 -- NTU 10/06/11 6.75 7.00 48.6 21.5 264 NTU 0411/12 4....28 1 .84 11 152 NT 1024/12 465 3.63 152 85 6 0 NT 04124/13 900 21.2 61.5 12.33 48 NT 09/09/13 416 5.42 16.03 8.80 63.9 NTU 04122/14 4.72 19.6 42.1 5.3] 48 NTU 10/01/14 5.16 5.14 26 61 11.92 NTU 04107/15 3.34 24.] 106 6.52 34 NTU 10/06/15 1.62 2.41 54.3 2.96 27.] NTU 04118/16 2.01 12.09 60.9 1.05 51 NTU 09/26/16 21.3 2.59 38.5 1.20 14 NTU 04125/17 10.3 21.4 60.9 1.89 68.9 NTU 10/16/17 3.58 0.58 22.9 3..]8 7.04 NT 04116/18 . 256 8.3] 102 637 886 NT 10/1/18 307 213 1 366 15.] NT NTU 04108/19 10/09/19 3A 135 ] 1.07 69.0 161 6.4] 184 ]0 9.18 Obdation Reduction mV 05110/05 -65 -250 -322 -313 -278 Potential(Field) mV 10/11/05 197 -78 -26 -54 -] mV 04124/06 -- 58 -129 -89 -10] mV 10/16/06 -- -65 -159 -136 -20] mV 04110/07 -- - -- - -- mV 0915/07 -- - -- - -- mV 05102/08 - -- - -- mV 12105/08 105 - -- - -- mV 04116/09 -- - -- - -- mV 1010]/09 -- - -- - -- mV 04128/10 288 281 84 108 51 mV 10/05/10 244 28] 105 123 82 mV 05110/11 -- mV 10/06/11 166 185 4 87 -63 mV 04116/12 171 134 33 62 -65 mV 10/24/12 127 73 -37 63 -109 mV 04126/13 178 89 -70 69 -102 mV 09/09/13 116 106 25 63 -90 mV 04122/14 118 164 92 125 -]8 mV 1 01 1/14 109 45 -70 45 -133 mV 04107/15 50 36 0 16 -]3 mV 10/06/15 -38.4 123 -12 54 106 mV 04118/16 135 63 6 32 -107 mV 09/26/i6 42.2 22 -32 20 -59 mV 04125/17 154.9 32.9 -18.0 41.8 -68.0 mV 10/16/1] 154.1 81.] -02.2 54.2 4 mV 04116/18 364.8 214A 47.6 201.8 -108A mV 10I18/18 158.7 4.1 -29.7 150.3 -56.2 mV mV 04108/19 10109/19 41.2 196.3 96.8 46.2 43.8 10.4 68.2 32.0 -102.4 -118.9 Dissolved 0-(Field) ma1L 05I10/05 3.61 0.61 0.23 0.38 0.60 ma1L 10/11/05 5.69 2.21 0.65 0.82 0.42 mall 04124/06 -- 0.60 0.23 0.60 0.18 ma1L 10/16M -- 1.10 0.40 0.41 0.14 moll 04110/07 -- - -- - -- ma1L 09/25/07 -- - -- - -- ma1L 05102/08 - -- - -- ma1L 12105/08 5.01 - - - -- ma1L 04116/09 - - - - -- ma1L 10/07/09 - - - - -- ma1L 04128/10 6.94 4.89 4.32 1.2] 0.08 ma1L 10/05/10 3.49 1.91 2.27 0.55 0.05 - L 05110/11 malL 10/06/11 4.49 1.19 3.38 0.65 0.22 mall 04116/12 4.75 0.97 2.51 1.59 0.61 ma1L 10/24/12 3.75 1.45 0.]] 0.90 0.21 mall 04126/13 6.38 1.31 1.]5 0.90 0.38 ma1L 09/09/13 5.95 3.46 4.18 2.94 0.41 mall 04122/14 8.89 1.41 3.]i 2.96 1.65 mglL 10I01/14 6.59 1.W 3.42 0.42 0.17 ma1L 04/07/15 5.52 4.83 2.76 3.9] 0.91 m9IL 10/06/15 3.80 0.99 1.19 0.69 0.37 m9IL 04/18/16 6.16 1.11 0.98 0.59 0.19 moll 09126/16 4.81 0.50 0.61 0.64 0.14 ma1L 04/25/17 3.65 0.40 2.% 0.60 0.20 mall 10116/17 2.85 0.68 0.51 0.22 0.05 mall 04/16/18 3.38 0.4] 0.63 0.59 0.16 mglL 10118/18 3.55 0.92 1.91 0.39 0.]0 mglL 04/08/19 3.43 0.14 0.84 0.32 1.01 mall 10I09/19 2.3] 2.98 3.04 0.55 1.33 Notes: S.U. = Standard Units NTU = Neohelomet,, Twbidi v Units uSlcm= microsiemens oar centimeter mod-= milliarams oar liter mV= Millivolts --- no data available Data polar to April 2017 provided by SBME Engineering GOLDER za2 Febmary 2020 1668421.106 TABLE 6 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Del(SW Reporting Sample Methotl Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points Standard) (SW Stentlard) Units Day Detection Qua RepoNng Blanks Limk i.itlon Limk Limk SW-1 SW-2 SW-3 SW-4 SW-5 AMimgnv WL 03/O= - - 30 ND ND ND ND ND ND No SW Standard uglL 09/01/00 - - 30 ND ND ND ND ND ND ug/L 03/01/01 - - 30 ND ND ND ND ND ND Ua 09/01/01 - - 30 ND ND ND ND ND ND UWL 03/01/02 - - 30 ND ND ND ND ND ND Ua 09/01/02 - - 30 ND ND ND ND ND ND UWL M01103 - - 30 ND ND ND ND ND ND Ua 10/01/03 - - 30 ND ND ND ND ND ND UWL 03/01/04 - - 30 ND ND ND ND ND ND Ua 09/01/04 - - 30 ND ND ND ND ND ND UWL OS/01/05 - - 30 ND ND ND ND ND ND Ua 10/01/05 - - 30 ND ND ND ND ND ND UWL 04/01loci - - 30 ND ND ND ND ND ND Ua 10/01/06 - - 30 ND ND ND ND ND ND ug/L 04/10/07 - - - ND ND ND ND ND ND Ua 09/25/07 - ND ND ND ND ND ND ug/L 0S/05/08 0.68 - 6 -- ND ND ND ND ND Ua 12/04/08 0.68 - 6 -- ND ND ND ND ND ug/L 04/13/09 0.68 - 8 ND ND ND ND ND uglL 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 - 8 -- ND 0.272 J 0.225 J 0.258 J ND Ua 10/11/10 0.22 - 6 0.329 J 0.254 J 0.233 J 0.221 J ND ug/L OS/12111 0.22 - 8 0.44E J ND 0,287 J 0.241 J 0.261 J ND Ua 10/07/11 1.1 - 6 ND ND ND 0.287 J 0.24 J ND ug/L Ml 112 0.22 - 8 0,279 J ND 0.34 J 0.308 J 0.284 J ND Ua 10/28/12 0.22 - 6 ND ND ND ND ND ND ug/L 04/25/13 0.22 - 8 ND ND ND ND ND ND Ua 09/12/13 0.22 - 6 ND 0.344 J 0.28 J ND ND ND ug/L 04/25/14 0.22 - 8 0,695 J 1.62 J 0.582 J 0.332 J 0.264 J ND Ua 10/02/14 0.22 - 6 0.526 J ND 0.378 J 0.268 J 0.267 J ND UWL MO6115 0.22 - 8 0,312 J ND 0.232 J ND 0.754 J ND Ua 10/07/15 0.22 - 6 0.26E J ND 0.372 J 0.259 J ND ND UWL 04/20/16 0.22 - 8 0.22 ND ND 0.424 J 0.261 J ND Ua 09/28/16 0.22 - 6 ND ND ND ND 0.479 J ND uq8. 04/28117 0.37 - 6 0.708 J ND 0.485 J ND ND ND uq8. 70/17/77 0.37 - 8 0.455 J ND 0.490 J ND 0.854 J ND uq/L 04/16/18 1.85 - 6 ND ND ND ND ND ND uq/L 10/18/18 1.85 5.00 - ND ND ND ND ND ND uq/L 04/12119 0.74 2.00 - ND ND ND ND ND ND WL 1 10/08/19 0.74 1 2.00 1 ND ND ND ND ND ND Arsenic WL 03/01/00 - - 10 ND ND ND ND ND ND SW Standard uglL 10 ND ND ND ND ND ND Human Health 10 u.l gq/L 03/01/01 - - 10 ND ND ND ND ND ND Ua 09/01/01 - - 70 ND ND ND ND ND ND ug/L 03/01/02 - - 10 ND ND ND ND ND ND Ua 09/01/02 - - 10 ND ND ND ND ND ND ug/L M01103 - - 10 ND ND ND ND ND ND Ua 10/01/03 - - 10 ND ND ND ND ND ND ug/L 03/01/04 - - 10 ND ND ND ND ND ND Ua 09/01/04 - - 10 ND ND ND ND ND ND ug/L OS/01/05 - - 10 ND ND ND ND ND ND Ua 10/01/05 - - 10 ND ND ND ND ND ND uglL 04/01loci - - 10 ND ND ND ND ND ND Ua 10/01/06 - - 10 ND ND ND ND ND ND UWL 04/10/07 - - - ND ND ND ND ND ND Ua 09/25/07 - ND ND ND ND ND ND UWL 0S/05/08 2 - 10 -- ND 2.4 J ND 2.2 J ND Ua 12/04/08 2.8 - 10 -- ND ND ND ND ND UWL 04/13/09 2.8 - 70 -- ND ND ND ND ND Ua 10/20/09 2.8 - 10 ND ND ND ND ND ND UWL 04/30/10 2.8 - 70 -- ND ND ND ND ND Ua 10/11/10 2.8 - 10 -- ND ND ND ND ND ug/L OS/12111 2.8 - 70 3.04 J 3.39 J ND ND ND Ua 10/07/11 2.8 - 10 ND ND ND ND ND ND UWL Ml 112 2.8 - 70 ND ND 3.12 J ND ND ND Ua 10/28/12 2.8 - 10 ND ND ND ND 5.25 J ND uq/L 04/25/13 2.8 - 70 ND ND ND ND ND ND Ua 09/12/13 5.4 - 10 ND ND ND ND ND ND uq/L 04/25/14 5.4 - 70 ND ND ND ND ND ND Ua 10/02/14 5.4 - 10 6.11 J ND ND ND ND ND UWL MO6115 6.8 - 70 ND ND ND ND ND ND Ua 10/07/15 6.8 - 10 ND ND ND ND ND ND ug/L 04/20/16 6.8 - 70 ND ND ND ND ND ND Ua 09/28/16 6.8 - 10 ND ND ND ND ND ND gq/L 04/28117 6.8 - 10 ND ND ND ND ND ND ug/L 10/17/17 6.8 - 10 ND ND ND ND ND ND U.l M1618 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 U.l 04/12119 7.6 10.0 - ND ND ND ND ND ND WL 1 10/08/19 7.6 10.0 1 1 ND ND ND ND ND ND Barium WL 03/O= - - 500 ND ND ND ND ND ND SW Standard uul 09/01/00 - - 500 ND ND ND ND ND ND Human Health=200 mWL ml 03/01/01 - - 500 ND ND ND ND ND ND uglL 09/01/01 - - 500 ND ND ND ND ND ND UWL 03/01/02 - - 500 ND ND ND ND ND ND Ua 09/01/02 - - 500 ND ND ND ND ND ND uq/L M01103 - - 500 ND ND ND ND ND ND Ua 10/01/03 - - 500 ND ND ND ND ND ND uq/L 03/01/04 - - 500 ND ND ND ND ND ND Ua 09/01/04 - - 500 ND ND ND ND ND ND uq/L OS/01/05 - - 500 ND ND ND ND ND ND Ua 10/01/05 - - 500 ND ND ND ND ND ND uglL 04/01loci - - 500 ND ND ND ND ND ND Ua 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 Ua 09/25/07 - 74.5 J 70.9 J 16.8 J 23 J 24 J ND ug/L OS/05/08 0.2 - 100 -- 51.2 B 53 B 92.5 B 65.5 B ND Ua 12/04/08 1 - 100 -- 35.9 J 21.8 J 27 J 27 J ND UWL 04/13/09 4.2 - 100 -- 53.4 J 44.8 J 41.6 J 42 J ND Ua 10/20/09 1 - 100 0.3 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 Ua 10/11/10 1 - 100 4].1 J 18.8 J 29.3 J 30.6 J ND ug/L OS/12111 1 - 100 77.3 J 39.3 J 40.3 J 35.3 J 37 J ND Ua 10/07/11 1 - 100 74.2 J ]6.4 J 21.4 J 42.7 J 32.2 J ND ug/L Ml 112 1 - 100 43.7 J 48.4 J 23.5 J 33.7 J 33.7 J ND Ua 10/28/12 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 Ua 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 uglL 70/02/14 1 - 100 112 45.9 J 22.3 J 24.4 J 25.1 J NO uq/L MO6115 1 - 100 59.3 J 44.3 J 42.2 J 35.5 J 47.3 J ND Ua 10/07/15 1 - 100 85.7 J 46.2 J 28.3 J 319 41 J ND uq/L 04/20/16 1 - 100 113 48.3 J 47.5 J 31 J 35.4 J ND Ua 09/28/16 1 - 100 44.8 J 52.8 J 17.6 J 27.9 J 33.9 J ND uq8. 04/28117 1 - 100 46.5 J 45.4 J 59.9 J 50.2 J 45.0 J ND uq/L 10/17/17 1 - 100 40.1 J 33.6 J 55.8 J 41.2 J 37.8 J ND U. 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 U.l 04/12119 1.1 10.0 - 60.9 64.6 40.0 %.8 %6 ND WL 1 10/08/19 1.1 1 10.0 55.9 49.1 55.1 57.8 60.0 ND B-Ilium WL 03/01/00 - - 2 ND ND ND ND ND ND Sw Ste dart uql 09/0i/00 - - 2 ND ND ND ND ND ND Acute=65 uq/L ug/L 03/01/01 - - 2 ND ND ND ND ND ND Chronic=6.5 uq/L Ua 09/01/01 - - 2 ND ND ND ND ND ND ug/L ONO 102 - - 2 ND ND ND ND ND ND Ua 09/01/02 - - 2 ND ND ND ND ND ND uq/L M01103 - - 2 2.4 2.4 2.3 2.3 ND ND Ua 10/01/03 - - 2 ND ND ND ND ND ND ug/L 03/01/04 - - 2 ND ND ND ND ND ND Ua 09/01/04 - - 2 ND ND ND ND ND ND ug/L OS/01/05 - - 2 ND ND ND ND ND ND Ua 10/01/05 - - 2 ND ND ND ND ND ND uq/L 04/01loci - - 2 ND ND ND ND ND ND Ua 10/01/06 - - 2 ND ND ND ND ND ND uq/L 04/10/07 - - - ND ND ND ND ND ND Ua 09/25/07 - ND ND ND ND ND ND uq/L 0S/05/08 0.7 - 1 -- ND ND ND ND ND Ua 12/04/08 0.1 - 1 -- ND ND ND ND ND uq/L 04/13/09 0.08 - 1 ND ND ND ND ND Ua 10/20/09 0.1 - 1 0.113 J ND ND ND ND 0.42 J uq/L 04/30/10 0.1 - 1 -- ND ND ND ND ND Ua 10/11/10 0.1 - 1 ND ND ND ND ND ug/L OS/12111 0.1 - 1 ND ND ND ND ND ND Ua 10/07/11 0.1 - 1 ND 0.149 J ND ND ND ND ug/L Ml 112 0.1 - 1 ND ND ND ND ND ND Ua 10/28/12 0.1 - 1 ND ND ND ND ND ND ug/L 04/25/13 0.1 - 1 ND ND ND ND ND ND Ua 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 Ua 10/02/14 0.1 - 1 ND ND ND ND ND ND ug/L MO6115 0.1 - 1 ND ND ND ND ND ND Ua 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 Ua 09/28/16 0.1 - 1 ND ND ND ND ND ND ZU l 04/28117 0.13 - 1 ND ND ND ND ND ND ug/L 10/17/17 0.13 - 1 ND ND ND ND ND ND U.l 04/16/18 0.13 - 1 ND ND ND ND ND ND UWL 10/18/18 0.16 1.00 - ND ND ND ND ND ND U.l 04/12119 0.16 1.00 - ND ND ND ND ND ND mlL 1 10/08/19 0.16 1.00 1 ND ND ND ND ND ND Cadmium WL 03/O= - - 1 ND ND ND ND ND ND SW Standard uglL 09/01/00 - - 1 ND NO ND ND ND ND Acute=0.S2uVL ug/L 03/01/01 - - 1 ND ND ND ND ND ND Chronic =0.15 uq/L Ua 09/01/01 - - 1 1.1 ND ND ND ND ND UWL 03/01/02 - - 1 ND ND ND ND ND ND Ua 09/01/02 - - 1 ND 1.2 ND ND ND ND uq/L M01103 - - 1 4.1 3.8 4.0 3.9 ND ND Ua 10/01/03 - - 1 ND ND ND ND ND ND uq/L 03/01/04 - - 1 CO ND 1.0 ND ND ND Ua 09/01/04 - - 1 ND ND ND ND ND ND ug/L OS/01/05 - - 1 ND ND ND ND ND ND Ua 10/01/05 - - 1 ND ND ND ND ND ND gq/L 04/01loci - - 1 ND ND ND ND ND ND Ua 10/01/06 - - 1 ND ND ND ND ND ND ug/L 04/10/07 - - - ND ND ND ND ND ND Ua 09/25/07 - ND ND ND ND ND ND ug/L 0S/05/08 0.5 - 1 -- ND ND ND ND ND Ua 12/04/08 0.36 - 1 -- ND ND ND ND ND ug/L 04/13/09 0.09 - 1 0.74 J 0.17 J 0.26 J 0.21 J ND Ua 10/20/09 0.36 - 1 0.4n J ND ND ND ND ND UWL 04/30/10 0.36 - 1 -- ND ND ND ND ND Ua 10/11/10 0.36 - 1 ND ND ND ND ND uq/L OS/12111 0.36 - 1 0.471 J ND ND ND ND ND Ua 10/07/11 0.36 - 1 ND ND ND ND ND ND uq/L Ml 112 0.36 - 1 ND ND ND ND ND ND Ua 10/28/12 0.36 - 1 ND ND ND ND ND ND uq/L 04/25/13 0.36 - 1 ND ND ND ND ND ND Ua 09/12/13 0.36 - 1 ND ND ND ND ND ND uglL 04/25/14 0.36 - 1 ND ND ND ND ND ND Ua 10/02/14 0.36 - 1 0.661 J ND ND ND ND ND ug/L MO6115 0.36 - 1 ND ND ND ND ND ND Ua 10/07/15 0.36 - 1 0.794 J ND ND 5.66 ND ND UWL 04/20/16 0.36 - 1 ND ND ND ND ND ND Ua 09/28/16 0.36 - 1 ND ND ND ND ND ND uq8. 04/28117 0.36 - 1 ND ND ND ND ND ND uq8. 70/17/77 0.38 - 1 ND ND ND ND ND ND uq/L 04/16/18 0.36 - 1 ND ND ND ND ND ND UWL 10/18/18 0.36 1.00 - ND ND ND ND ND ND uq/L 04/12119 0.36 1.00 - ND ND ND ND ND ND uq/L IWOW79 0.38 1.00 ND ND ND ND ND ND 4 GOLDER 1 or s Febmery 2020 1fi68421.106 TABLE 6 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Det(SW Reporting Sample Methotl Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points Standard) (SW Stentlard) Units Day Detection Quanlatlon RepoNng Blanks Limit Limit Limk SW-1 SW-2 SW-3 SW-4 SW-5 Chrarnium uq/L 03/01/00 - - 10 ND ND ND ND ND ND SW Standard uglL 09/01/00 - - 70 ND ND 25 14 20 ND Acute=16 uq/L uq/L 03/01/01 - - 10 ND ND ND ND ND ND Chronic =ll uc/L uq/L 09/01/01 - - 10 ND ND ND ND ND ND UWL 03/01/02 - - 10 ND ND ND ND ND ND uq0. 09/01/02 - - 10 ND ND ND ND ND ND UWL M01103 - - 10 ND ND ND ND ND ND uq0. 10/01/03 - - 10 ND ND 10 ND ND ND UWL 03/01/04 - - 10 ND ND ND ND ND ND uq0. 09/01/04 - - 10 ND ND ND ND ND ND UWL OS/01/05 - - 10 ND ND ND ND ND ND uq0. 10/01/05 - - 70 ND ND ND ND ND ND eglL 04/01/06 - - 10 ND ND ND ND ND ND uq0. 10/01/06 - - 10 ND ND ND ND ND ND uq/L 04/10/07 - - - ND ND ND ND ND ND uq/L 09/25/07 - ND ND ND ND ND ND uq/L 05/05/08 2 - 10 -- ND ND 15 ND ND uq/L 12/04/08 1 - 10 -- ND 2.3 J ND 1.4 J ND uq/L 04/13/09 0.7 - 70 1.4 J 1.6 J 1.1 J 1.1 J ND uq/L 10/20/09 1 - 10 816 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 - 70 -- 2.52 J 1.00 1.00 1.00 ND ug/L 05/17J11 1 - 10 4.37 J ND 1.00 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 - 70 1.11 J ND ND ND ND ND ug/L 10/28/12 1 - 10 ND ND ND ND ND ND ug/L 04/25/13 1.4 - 70 1.44 J 2.72 J ND ND 2.57 J ND ugh 09/12/13 1.4 - 10 ND ND ND ND ND ND uq/L 04/25/14 1.4 - 70 11.7 ND 4.26 J 1.7 J ND ND uq/L 10/02/14 1.4 - 10 20.6 B 2.13 B 13.4 B 2.50 B 2.70 B uq/L MO6115 1.4 - 70 3.66 J ND 3.36 J ND 3.51 J ND uq/L 10/07/15 1.4 - 10 7.93 J ND ND 0.1 ND ND uq/L 04/20/16 1.4 - 70 14.6 ND 6.73 J ND ND ND uq/L 09/28/16 1.4 - 10 ND ND ND ND ND ND eq/L 04/28117 1.4 - 10 ND ND 5.88 J 1.43 J ND ND UWL 10/17/17 1.4 - 10 ND ND 3.94 J ND ND ND uq0. 04/16/18 1.4 - 10 1.74 J ND 1.80 J ND 1.92 J ND UWL 10/18/18 1.4 10.0 - ND ND ND ND ND ND U. 04/12119 1.4 10.0 - 1.93 J 1.77 J ND ND 2.09 J ND W1 10/08/19 1.4 10.0 7.83 J ND ND ND ND ND Cgbelt WL 03/O= - - 70 ND ND ND ND ND ND No SW Standard uglL 09/01/00 - - 70 ND ND ND ND ND ND UWL 03/01/01 - - 10 ND ND ND ND ND ND uq0. 09/01/01 - - 10 ND ND ND ND ND ND UWL 03/01/02 - - 10 ND ND ND ND ND ND uq0. 09/01/02 - - 10 ND 17 ND ND ND ND UWL M01103 - - 10 14 74 15 14 ND ND uq0. 10/01/03 - - 10 ND ND ND ND ND ND uq/L 03/01/04 - - 10 ND ND ND ND ND ND uq/L 09/01/04 - - 10 ND ND ND ND ND ND uq/L OS/01/05 - - 10 ND ND ND ND ND ND uq/L 10/01/05 - - 10 ND ND ND ND ND ND uq/L 04/01/06 - - 10 ND ND ND ND ND ND uq/L 10/01/06 - - 10 ND ND ND ND ND ND uq/L 04/10/07 - - - ND ND ND ND ND ND uq/L 09/25/07 - 3.5 J ND ND ND ND ND uq/L 0S/05/08 2 - 10 -- ND ND 7.1 J 3.8 J ND uq/L 12/04/08 1.1 - 10 -- ND ND ND 2.9 J ND UWL 04/13/09 0.8 - 10 -- 1.8 J 0.7 J 0.8 J 0.6 J ND uq0. 10/20/09 1.1 - 10 3.43 J ND ND ND ND ND UWL 04/30/10 1.1 - 70 -- ND ND ND 1.98 J ND uq0. 10/11/10 1.1 - 10 ND ND ND ND ND UWL OS/12111 1.1 - 70 319 J ND ND ND ND ND uq0. 10/07/11 1.1 - 10 4.06 J 6.5 J 1.19 J 2.28 J ND ND UWL Ml 112 1.1 - 70 ND ND ND ND ND ND uq0. 10/28/12 1.1 - 10 ND ND ND ND ND ND UWL 04/25/13 1.1 - 70 ND 2.03 J ND ND ND ND uq0. 09/12/13 1.1 - 10 ND ND 1.46 J 1.15 J ND ND UWL 04/25/14 1.1 - 70 4.31 J ND 1.91 J ND ND ND uq0. 10/02/14 1.1 - 10 8.95 J ND 4.56 J 2.46 J 2.45 J ND UWL MO6115 1.1 - 70 1.73 J ND 2.44 J 1.56 J 2.18 J ND uq/L 10/07/15 1.1 - 10 4.34 J ND 2.43 J 46.5 1.92 J ND uq/L 04/20/16 1.1 - 70 7.38 J ND 4.32 J 1.66 J 2.1 J ND uq/L 09/28/16 1.1 - 10 ND 1.30 J ND ND ND ND uq/L 04/28117 1.1 - 10 ND ND 2.31 J ND ND ND uq/L 10/17/17 1.1 - 10 ND ND 2.94 J ND ND ND uq0. 04/16/18 1.1 - 10 1.65 J 1.49 J ND 1.30 J 1.32 J ND uq/L 10/18/18 1.4 10.0 - ND ND ND ND ND ND uq0. 04/12/19 1.4 10.0 - ND 1.40 J ND ND ND ND WL 1 10/08/19 1.4 1 10.0 ND ND ND ND ND ND C.c- WL 03/01/00 - - 200 ND ND ND ND ND ND SW Standards uq/L 09/01/00 - - 200 ND ND ND ND ND ND Acute=3.6uVL uq/L 03/01/01 - - 200 ND ND ND ND ND ND Chronic=2.7 WL uq/L 09/01/01 - - 200 ND ND ND ND ND ND uq/L 03/01/02 - - 200 ND ND ND ND ND ND uq/L 09/01/02 - - 200 ND ND ND ND ND ND UWL M01103 - - 200 ND ND ND ND ND ND uq0. 10/01/03 - - 200 ND ND ND ND ND ND UWL 03/01/04 - - 200 ND ND ND ND ND ND uq0. 09/01/04 - - 200 ND ND ND ND ND ND UWL OS/01/05 - - 200 ND ND ND ND ND ND uq0. 10/01/05 - - 200 ND ND ND ND ND ND eglL 04/01/O6 - - 200 ND ND ND ND ND ND uq0. 10/01/06 - - 200 ND ND ND ND ND ND UWL 04/10/07 - - - 2.2 J 1.5 J 6.2 J 4.5 J 4.3 J ND uq0. 09/25/07 - 11.2 0.6 10.3 8.4 J 10.1 ND UWL 05/05/08 0.8 - 10 -- 7.3 J 25 J 13.3 3.7 J ND uq0. 12/04/08 1.6 - 10 -- 20.5 4.6 J 4.3 J 64 J ND UWL 04/13/09 0.81 - 10 1.93 J 2.56 J 1.87 J 1.]8 J ND uglL 70R0/09 1.6 - 10 10.7 ND 7.1 J 5.15 J 5.2fi J ND uq/L 04/30/10 1.6 - 70 -- ND 5.9 J 3.3 J 6.33 J ND uq/L 10/11/10 1.6 - 10 10.2 8.12 J 5.59 J 3.91 J ND uq/L OS/12111 1.6 - 70 12.8 ND 3.34 J 2.89 J 3.03 J ND uq/L 10/07/11 1.6 - 10 8.31 J 5.88 J 4.91 J 6.56 J 3.28 J ND uq/L Ml 112 1.6 - 70 2.72 J ND 5.01 J 4.36 J 4.11 J ND uglL 70R6/72 1.6 - 10 2.04 J ND 5.4] J 2.22 J 2.71 J NO uq/L 04/25/13 1.6 - 70 3.I3 J 5.01 J 4.48 J 4.33 J 6.18 J ND uq/L 09/12/13 1.6 - 10 1.94 J ND 1.67 J ND ND ND uq/L 04/25/14 1.6 - 70 i6.7 B 3.46 B 70.5 B 5,92 B 6.29 B - uq0. 10/02/14 1.6 - 10 30.9 1.82 J 6.82 J 5A2 J 5.30 J ND uq/L MO6115 1.6 - 70 4.30 J 3.71 J 11.1 5.23 J 8.24 J ND uq0. 10/07/15 1.6 - 10 11.3 1.6 2.65 J 57.1 2.17 J ND UWL 04/20/16 1.6 - 70 21.2 ND 10.8 2,56 J 4.07 J ND uq0. 09/28/16 1.6 - 10 4.52 J 2.57 J 6.61 J fi.03 J 8.07 J ND eq/L 04/28117 1.6 - 10 5.19 J 3.02 J 13A 4.55 J 4.51 J ND uq/L 10/17/17 1.6 - 10 3.95 J 1.77 J 9.07 J 2.58 J 2,89 J ND uq8. 04/16/18 1.6 - 10 4.40 J 4,19 J 4.11 J 5.33 J 3.98 J ND uq/L 10/18/18 1.6 10.0 - 3.11 J 3.89 J 2.72 J 2.42 J 3.55 J ND uq0. 04/12/19 1.6 10.0 - 3.44 J 5.44 J 5.11 J 3.66 J 4.18 J ND WL 1 10/08/19 1.8 1 10.0 2.23 J 1.81 J 2.92 J 2.66 J 1.60 J ND Lead WL 03/01/00 - 10 ND ND 15 ND ND ND SW Standards09/0i/00 - - 10 ND ND 10 ND ND ND Acute=14 uq0. eglL 03/01/01 - - 10 ND ND ND ND ND ND Chronic=0.54 WL uq0. 09/01/01 - - 70 25 ND ND ND ND ND eq/L 03/01/02 - - 10 ND ND ND ND ND ND uq0. 09/01/02 - - 10 ND 86 ND ND ND ND UWL M01103 - - 10 ND ND ND ND ND ND uq/L 10/01/03 - - 10 ND ND ND ND ND ND uq/L 03/01/04 - - 10 ND ND ND ND ND ND uq/L 09/01/04 - - 10 ND ND ND ND ND ND uq/L OS/01/05 - - 10 ND ND ND ND ND ND uq/L 10/01/05 - - 10 ND ND ND ND ND ND eq/L 04/01/06 - - 10 ND ND ND ND ND ND uq/L 10/01/06 - - 10 ND ND ND ND ND ND uq/L 04/10/07 - - - ND ND ND ND ND ND uq/L 09/25/07 - 11.2 ND ND ND ND ND uq/L 0S/05/08 2 - 10 -- ND ND 14.8 ND ND uq/L 12/04/08 1.9 - 10 -- ND ND ND ND ND UWL 04/13/09 1.8 - 10 2.3 J 2.5 J 1.6 1.6 ND uq/L 10/20/09 1.9 - 10 8.94 J ND ND 2A4 J 3.34 J ND UWL 04/30/10 1.9 - 70 -- ND ND ND 2.04 J ND uq0. 10/11/10 1.9 - 10 5.45 J 1.90 1.90 1.90 ND eq/L OS/12111 1.9 - 70 i5A ND 2.00 J ND ND ND uq0. 10/07/11 1.9 - 10 10.0 16.4 ND 3.33 J ND ND eq/L Ml 112 1.9 - 70 ND ND 2.38 J ND ND ND uq0. 10/28/12 1.9 - 10 ND ND ND ND ND ND eq/L 04/25/13 1.9 - 70 ND 4,74 J ND ND ND ND uq0. 09/12/13 2.1 - 10 ND ND ND ND ND ND uq/L 04/25/14 2.1 - 70 11.2 3.23 J 3.36 J 2.23 J 2.82 J ND uq/L 10/02/14 2.1 - 10 ND ND ND ND ND ND uq/L MO6115 3.1 - 70 ND ND ND ND ND ND uq/L 10/07/15 3.1 - 10 7.02 J ND ND 95.2 ND ND uq/L 04/20/16 3.1 - 70 14.6 ND S.10 J ND ND ND uq/L 09/28/16 3.1 - 10 ND ND ND ND ND ND uq/L 04/28117 3.1 - 10 ND ND 4.66 J ND ND ND uq/L 10/17/17 3.1 - 10 ND ND 3.18 J ND ND ND uq0. 04/16/18 3.1 - 10 ND ND ND ND ND ND uq/L 10/18/18 3.1 10.0 - ND ND ND ND ND ND uq0. 04/12/19 3.1 10.0 - 3.91 J ND ND ND ND ND 991L 10/08/19 3.1 1 10.0 ND ND ND ND ND ND Nickel uq/L 03/01/00 - - 50 ND ND ND ND ND ND SW Standards uglL 09/01/00 - - 50 ND ND 82 85 81 ND Acute=140 uci. uq/L 03/01/01 - - 50 ND ND ND ND ND ND Chronic=16 uc/L uq/L 09/01/01 - - 50 ND ND ND ND ND ND UWL ONO102 - - 50 ND ND ND ND ND ND uq0. 09/01/02 - - 50 ND ND ND ND ND ND eq/L M01103 - - 50 ND ND ND ND ND ND uq0. 10/01/03 - - 50 ND ND ND ND ND ND eq/L 03/01/04 - - 50 ND ND ND ND ND ND uq0. 09/01/04 - - 50 ND ND ND ND ND ND eq/L OS/01/05 - - 50 ND ND ND ND ND ND uq0. 10/01/05 - - 50 ND ND ND ND ND ND eq/L 04/01/06 - - 50 ND ND ND ND ND ND uq0. 10/01/06 - - 50 ND ND ND ND ND ND eq/L 04/10/07 - - - ND ND 2.7 J ND 2.5 J ND uq0. 09/25/07 - ND ND 7.6 J ND ND ND uq/L 05/05/08 2.0 - 50 -- 3.5 J 3,9 J 5.5 J 6.7 J ND uq/L 12/04/08 1.8 - 50 -- ND 4.3 J 3.8 J 3.2 J ND uq/L 04/13/09 0.6 - 50 -- 2.3 J 1.5 J 1.6 J 1.5 J ND uq/L 10/20/09 1.8 - 50 2.94 J ND 2.53 J 1.89 J ND ND uq/L 04/30/10 1.8 - 50 -- ND ND ND 2.14 J ND uq/L 10/11/10 1.8 - 50 1.80 2.22 J 1.80 1.80 ND uq/L OS/12111 1.8 - 50 234 J ND ND 2.57 J 2.66 J ND uq/L 10/07/11 1.8 - 50 3.64 J 4.23 J 6.40 J 4.31 J 3.43 J ND uq/L Ml 112 1.8 - 50 ND ND 2.56 J 2.00 J 2.23 J ND uq/L 10/28/12 1.8 - 50 ND 1.92 J 5.32 J 5.14 J 5.46 J ND UWL 04/25/13 1.8 - 50 2.38 J 3.30 J 6.20 J 6.96 J 6.85 J ND uq0. 09/12/13 1.8 - 50 ND ND 2.09 J ND ND ND eq/L 04/25/14 1.8 - 50 4.30 J 2.07 J 7.49 J 5.52 J 5.55 J ND uq0. 10/02/14 1.8 - 50 7.25 J ND 23.7 J 9.96 J 10.6 J ND eq/L MO6115 1.8 - 50 2.02 J ND 3.03 J 2.33 J 2.46 J ND uq0. 10/07/15 1.8 - 50 3.16 J ND 6.56 J 22.0 J 3.14 J ND eq/L 04/20/16 2.2 - 50 5.60 J ND 5.02 J 8.54 J 2.88 J ND uq0. 09/28/16 2.2 - 50 ND ND 3.54 J 3.34 J 6.44 J ND eq/L 04/28117 2.2 - 50 ND ND 6.02 J 2.83 J 2.62 J ND eq/L 10/17/17 2.2 - 50 ND ND ND ND ND ND U. 04/16/18 2.2 - 50 ND ND ND ND ND ND eq/L 10/18/18 2.2 10.0 - ND ND ND ND ND ND U. 04/12119 2.2 10.0 - ND ND ND ND ND ND eq/L 10/08/79 2.2 10.0 ND ND ND ND 2.40 J ND 4 GOLDER zors Febmary 2020 1668421.106 TABLE 6 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detectetl Reporting Sample Methotl Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points r (SW Standard) Units Day Detection Quanlatlon RepoNng Blanks Limit Limit Limk SW-1 SW-2 SW-3 SW-4 SW-5 Selenium u0/L OWOV00 - - 20 ND ND ND ND ND ND SW Standards u0/L 09/01/00 - - 20 ND ND ND ND ND ND Acute=5 u0/L u0/L 03/01/01 - - 20 ND ND ND ND ND ND Chronic=5 uc/L u0/L 09/01/01 - - 20 ND ND ND ND ND ND u0/L 03/01/02 - - 20 ND ND ND ND ND ND u00. 09/01/02 - - 20 ND ND ND ND ND ND UWLM01103 - - 20 ND ND ND ND ND ND u00. 10/01/03 - - 20 ND ND ND ND ND ND u0/L 03/01/04 - - 20 ND ND ND ND ND ND u00. 09/01/04 - - 20 ND ND ND ND ND ND u0/L OS/01/05 - - 20 ND ND ND ND ND ND u00. 10/01/05 - - 20 ND ND ND ND ND ND enlL 04/01/O6 - - 20 ND ND ND ND ND ND u00. 10/01/06 - - 20 ND ND ND ND ND ND u0/L 04/10/07 - - - ND ND ND ND 2.9 J ND u0/L 09/25/07 - ND ND ND ND ND ND u0/L OS/05/08 2 - 10 -- ND ND ND ND ND u0/L 12/04/08 2.7 - 10 -- ND ND ND ND ND u0/L 04/13/09 3.4 - 10 -- ND ND ND ND ND u0/L 10/20/09 2.7 - 10 ND ND ND ND ND ND u0/L 04/30/10 0.83 - 70 -- 1.72 J 0.9 J 0.974 J 1.23 J ND u0/L 10/11/10 0.83 - 10 0.83 0.83 0.83 0.875 J ND u0/L OS/12111 0.83 - 70 ND ND ND 7.16 J 0.928 J ND u0/L 10/07/11 4.15 - 10 ND ND ND 7.03 J 1.16 J ND u0/L Ml 112 0.83 - 70 ND ND ND ND ND ND u0/L 10/28/12 0.83 - 10 ND ND ND ND ND ND u0/L 04/25/13 0.83 - 70 ND ND ND ND ND ND u0/L 09/12/13 0.91 - 10 ND ND ND ND ND ND u0/L 04/25/14 0.91 - 70 ND ND ND ND ND ND u0/L 10/02/14 0.91 - 10 ND ND ND ND ND ND UWL MO6115 0.91 - 70 ND ND ND ND ND ND u00. 10/07/15 0.91 - 10 ND ND ND ND ND ND UWL 04/20/16 0.91 - 70 ND ND ND ND ND ND u00. 09/28/16 0.91 - 10 ND ND ND ND ND ND en/L 04/28117 6.2 - 10 ND ND ND ND ND ND u0/L 10/17/17 6.2 - 10 ND ND ND ND ND ND u00. 04/16/18 6.2 - 10 ND ND ND ND ND ND u0/L 10/18/18 6.2 10.0 - ND ND ND ND ND ND U. 04/12/19 6.2 10.0 - ND ND ND ND ND ND u0/L 10/08/19 6.2 10.0 ND ND ND ND ND ND Sil- u0/L 03/O= - - 70 ND ND ND ND ND ND SW Standards u0/L 09/01too - - 70 ND ND ND ND ND ND Acute=30 u.1 u0/L 03/01/01 - - 10 ND ND ND ND ND ND Chronic=0.6 u0/L u0/L 09/01/01 - - 10 ND ND ND ND ND ND u0/L 03/01/02 - - 10 ND ND ND ND ND ND u0/L 09/01/02 - - 10 ND ND ND ND ND ND u0/L M01103 - - 10 ND ND ND ND ND ND u0/L 10/01/03 - - 10 ND ND ND ND ND ND u0/L 03/01/04 - - 10 ND ND ND ND ND ND u0/L 09/01/04 - - 10 ND ND ND ND ND ND u0/L OS/01/05 - - 10 ND ND ND ND ND ND u0/L 10/01/05 - - 10 ND ND ND ND ND ND UWL 04/01/O6 - - 10 ND ND ND ND ND ND u00. 10/01/06 - - 10 ND ND ND ND ND ND u0/L 04/10/07 - - - ND ND ND ND ND ND u00. 09/25/07 - ND ND ND ND ND ND u0/L 05/05/08 2 - 10 -- ND 2.2 J ND 2.4 J ND u00. 12/04/08 1.9 - 10 -- ND ND ND 2.8 J ND UWL04/13/09 1.0 - 10 -- ND ND ND ND ND u00. 10/20/09 1.9 - 10 ND ND ND ND ND ND u0/L 04/30/10 1.9 - 70 -- 2.22 J ND ND ND ND u0/L 10/11/10 1.9 - 10 ND ND ND ND ND u0/L OS/12111 1.9 - 70 ND ND ND ND ND ND u0/L 10/07/11 1.9 - 10 ND ND ND ND ND ND UWL Ml 112 1.9 - 70 ND ND ND ND ND ND u00. 10/28/12 1.9 - 10 ND ND ND ND ND ND UWL 04/25/13 1.9 - 70 2.06 J ND 1.95 J 2.29 J 2.31 J ND u00. 09/12/13 1.9 - 10 ND ND ND ND ND ND UWL 04/25/14 1.9 - 70 ND ND ND ND ND ND u00. 10/02/14 1.9 - 10 ND ND ND ND ND ND UWL MO6115 1.9 - 70 ND ND ND ND ND ND u0/L 10/07/15 1.9 - 10 ND ND 2.74 J ND 2.32 J ND u0/L 04/20/16 1.9 - 70 ND ND ND ND ND ND u0/L 09/28/16 1.9 - 10 ND ND ND ND ND ND UWL 04/28117 1.9 - 10 ND ND ND ND ND ND UWL 10/17/17 1.9 - 10 ND ND ND ND ND ND u00. 04/16/18 1.9 - 10 ND ND ND ND ND ND UWL 10/18/18 1.9 10.0 - ND ND ND ND ND ND U. 04/12/19 1.9 10.0 - ND ND ND ND ND ND u0/L 1 10/08/19 1.9 10.0 1 1 ND ND ND ND ND ND Thallium u0/L 03/01/00 - - 70 ND ND ND ND ND ND No SW Standard u0/L 09/01/00 - - 70 ND ND ND ND ND ND u0/L 03/01/01 - - 10 ND ND ND ND ND ND u0/L 09/01/01 - - 10 ND ND ND ND 12 ND u0/L 03/01/02 - - 10 ND ND ND ND ND ND u00. 09/01/02 - - 10 ND ND ND ND ND ND u0/L M01103 - - 10 ND ND ND ND ND ND u00. 10/01/03 - - 10 ND ND ND ND ND ND u0/L 03/01/04 - - 10 ND ND ND ND ND ND u00. 09/01/04 - - 10 ND ND ND ND ND ND u0/L OS/01/05 - - 10 ND ND ND ND ND ND u00. 10/01/05 - - 10 ND ND ND ND ND ND UWL 04/01/O6 - - 10 ND ND ND ND ND ND u0/L 10/01/06 - - 10 ND ND ND ND ND ND u0/L 04/10/07 - - - ND ND ND ND ND ND u0/L 09/25/07 - 0.053 J 0.05 J 0.045 J 0.055 J 0.054 J ND u0/L OS/05/08 0..06 5 -- ND ND ND ND ND 12/04/08 006 5 ND Nu0D ND ND ND UWL 013/ 0036 . 55 ND ND ND ND ND u0/L 10/20/09 0.11 - 5.5 011 0.71 0.11 0.11 0.11 ND u0/L 04/30/10 0.11 - 5.5 -- ND ND ND ND ND u0/L 10/11/10 0.11 - 5.5 ND ND ND ND ND u0/L OS/12111 0.11 - 5.5 ND ND ND ND ND ND u0/L 10/07/11 0.55 - 5.5 ND ND ND ND ND ND u0/L Ml 112 0.11 - 5.5 ND ND ND ND ND ND u0/L 10/28/12 0.11 - 5.5 ND ND ND ND ND ND u0/L 04/25/13 0.11 - 5.5 ND ND ND ND ND ND u0/L 09/12/13 0.11 - 5.5 ND ND ND ND ND ND u0/L 04/25/14 0.11 - 5.5 ND ND ND ND ND ND u00. 10/07J14 0.11 - 5.5 ND ND ND ND ND ND u0/L MO6115 0.11 - 5.5 ND ND ND ND ND ND u00. 10/07/15 0.11 - 5.5 ND ND ND ND ND ND u0/L 04/20/16 0.11 - 5.5 ND ND ND ND ND ND u00. 09/28/16 0.11 - 5.5 0.190 J 0.124 J 0.205 J 0.187 J 0.316 J ND enlL 04/28117 0.11 - 5.5 0.389 J 0.267 J 0.261 J 0.287 J 0.205 J ND u0/L 70/17/77 0.11 - 5.5 0.879 J 0.855 J 0.698 J 0.840 J 0.425 J ND u00. 04/16/18 0.11 - 5.5 ND ND ND ND ND ND UWL 10/18/18 0.55 5.00 - ND ND ND ND ND ND u00. 04/12/19 0.22 2.00 - ND ND ND ND ND ND u0/L 10/08/19 0.22 2.00 1 ND ND ND ND ND ND Vanadium u0/L 03/O= - - 40 ND ND ND ND ND ND No SW Standard u0/L 09/01/00 - - 40 ND ND ND ND ND ND u0/L 03/01/01 - - 40 ND ND ND ND ND ND u0/L 09/01/01 - - 40 ND ND ND ND ND ND u0/L 03/01/02 - - 40 ND ND ND ND ND ND u0/L 09/01/02 - - 40 ND 44 ND ND ND ND u0/L M01103 - - 40 ND ND ND ND ND ND u0/L 10/01/03 - - 40 ND ND ND ND ND ND u0/L 03/01/04 - - 40 ND ND ND ND ND ND u0/L 09/01/04 - - 40 ND ND ND ND ND ND u0/L OS/01/05 - - 40 ND ND ND ND ND ND u00. 10/01/05 - - 40 ND ND ND ND ND ND enlL 04/01/O6 - - 40 ND ND ND ND ND ND u00. 10/01/06 - - 40 ND ND ND ND ND ND u0/L 04/10/07 - - - ND ND ND ND ND ND u00. 09/25/07 - 7.1 J ND ND 1.5 J 1.2 J ND UWL OS/05/O8 1 - 25 -- ND ND 9.3 J 2.4 J ND u00. 12/04/08 1.4 - 25 -- ND ND ND 2.5 J ND UWL04/13/09 0.7 - 25 4.2 J 2.1 J 2.5 J 2.6 J ND u00. 10/20/09 1.4 - 25 10.7 J 2.19 J 1.81 J 2.79 J 1.86 J ND UWL 04/30/10 1.4 - 25 -- ND ND ND 3.45 J ND u00. 10/11/10 1.4 - 25 8.27 J 3.03 J 2.55 J 2.02 J ND u0/L OS/12111 1.4 - 25 852 J 1.90 J 2.35 J 2.27 J 2A J ND u0/L 10/07/11 1.4 - 25 11.9 J 21.0 J 2.27 J 6.55 J 1.66 J ND u0/L Ml 112 1.4 - 25 2.33 J ND 1.48 J 1.60 J 1.44 J ND u0/L 10/28/12 1.4 - 25 ND ND ND ND ND ND u0/L 04/25/13 1.4 - 25 2.31 J 5.99 J ND ND ND ND u0/L 09/12/13 1.4 - 25 2.11 J ND 1.70 J 1.53 J ND ND u0/L 04/25/14 1.4 - 25 17.9 J ND 4.7 J 2.25 J 1.60 J ND u0/L 10/02/14 1.4 - 25 42.2 ND 3.14 J 2.66 J 2.26 J ND u0/L MO6115 1.4 - 25 2.34 J ND 3.33 J ND 4.62 J ND u0/L 10/07/15 1.4 - 25 18.2 J 2.91 J 3.69 J 61.8 3.05 J ND u0/L 04/20/16 1.4 - 25 26.9 ND 12.0 J 2.13 J 3.04 J ND u0/L 09/28/16 1.4 - 25 1.95 J ND ND 1.64 J 4.58 J ND UWL04/28117 1.4 - 25 2.61 J 1.66 J 8.36 J 2.35 J 2.38 J ND UWL 10/17/17 1.4 - 25 2.42 J ND 7.92 J 3.42 J 2.88 J ND U. 04/16/18 1.4 - 25 2.33 J 2.14 J 2.45 J 2.94 J 3.67 J ND UWL 10/18/18 1.4 10.0 - 1.88 J 2.26 J 1.51 J 1.61 J 7.70 J ND u00. 04/12/19 1.4 10.0 - 1.54 J 4.16 J 2.39 J 1.78 J 2.09 J ND 99/L 10/08/19 1.4 10.0 2,45 J ND 2.33 J 1.96 J 1.78 J ND Zinc Un/L 03/01/00 - - 50 ND ND 31 58 68 ND SW Standards u0/L 09/01/00 - - 50 ND ND 130 50 60 ND Acute=36 u00. Un/L 03/01/01 - - 50 ND ND fib ND 56 ND Chmnic=36 un/L u0/L 09/01/01 - - 50 120 ND 80 ND 50 ND UWL 03/01/02 - - 500 ND 70 50 SO ND u00. 09/01/02 - - 50 ND 180 80 ND ND ND enlL M01103 - - 50 ND ND ND ND SO ND u00. 10/01/03 - - 50 ND ND 120 50 50 ND enlL 03/01/04 - - 50 ND ND 52 ND ND ND u00. 09/01/04 - - 50 SitND Sfi ND 59 ND Un/L OS/01/05 - - 50 ND ND ND ND ND ND u0/L 10/01/05 - - 50 ND ND ND ND ND ND Un/L 04/01/O6 - - 50 ND ND 51.6 ND ND ND u0/L 10/01/06 - - 50 ND ND 80.9 ND ND ND u0/L 04/10/07 - - - 7.6 J 23.5 48.4 38.2 39.5 ND u0/L 09/25/07 - 84.9 11.4 60.4 WA 45.7 ND u0/L OS/05/08 1.0 - 70 -- 5.8 J 64 J 154 20.4 ND u0/L 12/04/08 3.8 - 10 -- 22.4 41.9 35.3 34.6 ND u0/L 04/13/09 3.4 - 70 -- 24.9 21.4 25.8 27.2 ND u0/L 10/20/09 3.8 - 10 70.0 7.62 J 45.2 30.9 33.2 ND UWL 04/30/10 3.8 - 70 -- 6.64 J 46.1 34.0 54.2 ND u00. 10/11/10 3.8 - 10 - 32.0 30.1 22.8 22.9 ND u0/L OS/12111 3.8 - 70 76.2 10.1 33.5 27.7 36.9 ND u00. 10/07/11 3.8 - 10 102 62.1 45.0 60.5 32.1 ND u0/L Ml 112 3.8 - 70 5.98 J ND 32.0 21.6 22.9 ND u00. 10/28/12 3.8 - 10 12.3 5.81 J 25.3 20.3 22.0 ND u0/L 04/25/13 3.8 - 70 15.0 25.8 42.6 31.6 33.1 ND u00. 09/12/13 3.8 - 10 9.73 J ND 29.8 14.9 17.1 ND u0/L 04/25/14 3.8 - 70 66.3 7.92 J 63.3 37.2 33.7 ND u0/L 10/02/14 3.8 - 10 144 3.94 J 06 MA 34.0 ND u0/L MO6115 3.8 - 70 16.4 5.33 J 57.3 30.0 51.6 ND u0 10/07/15 3.8 10 1.11..7 TW J 25....2 102...0 24..5 ND 0L 020/16 4.4 0 11 ND 95.5 315 44.7 ND u0 09/2816 4.4 10 5.0 5.21 J 20 164 27.7 ND enL 02817 4.4 0 11. 6.98 J 648 21.1 20.1 ND u0L 10/17/17 4.4 8.83 J ND 325 5.72 J ND ND u00 016/18 4.4 10 0 114 10.6 103 16.3 157 ND u0 10/18/18 4.4 100 . - 129 12.2 175 8.4 ND 9 44 . 10.00 1u00 16.2 13 2781 15. ND WW9 10 717 J ND 6.31 J 8 J 7.46 J NDu0L 4 GOLDER 3 of5 Febmary 2020 1668421.106 TABLE 6 Summary of Surface Water Monitoring Results Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina DetConstituent Reporting Sample Methotl Practical SWS Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points(SW (SW Standard) Units pay Detection Quanlatlon RePONn9 Blenlu Limit Limit Limit SWA SW-2 SW-3 SW-4 SW-S Acalcne WL 03/O= - - 100 ND ND ND ND ND - SWStandard=2000 WL uglL 09/01/00 - - 100 ND ND ND ND ND ND uq/L 03/01/01 - - 100 ND ND ND ND ND ND uq/L 09/01/01 - - 100 ND ND ND ND ND ND UWL 03/01/02 - - 100 ND ND ND ND ND ND uq/L 09/01/02 - - 100 ND ND ND ND ND ND UWL M01103 - - 100 ND ND ND ND ND ND uq/L 10/01/03 - - 100 ND ND ND ND ND ND UWL 03/01/04 - - 100 ND ND ND ND ND ND uq/L 09/01/04 - - 100 ND ND ND ND ND ND UWL OS/01/05 - - 100 ND ND ND ND ND ND uq/L 10/01/05 - - 100 ND ND ND ND ND ND UWL04/01/06 - - 100 ND ND ND ND ND ND uq/L 10/01/06 - - 100 ND ND ND ND ND ND uq/L 04/10/07 - - - ND ND ND ND ND ND uq/L 09/25/07 - ND 5.3 J 68 J 1.7 J 6.3 J ND uq/L 05/05/O8 0.82 - 100 -- ND ND ND ND ND uglL 12/04/08 1.5 - 100 -- 7.9 J 9.1 J 7.6 J 7.8 J ND uq/L 04/13/09 1.5 - 100 -- ND ND ND ND ND uglL 10/20/09 1.5 - 100 ND ND 6.0 J ND 6.2 J ND W1 04/30/10 1.5 - 100 -- 3.0 J 3.5 J 4.6 J 4.1 J ND uglL 10/11/10 1.5 - 100 ND ND ND ND ND W1 OS/12111 1.2 - 100 9.7 J 7.5 J ND ND ND ND uglL 10/07/11 1.2 - 100 ND ND ND ND ND ND W1 Ml 112 1.2 - 100 ND ND ND ND ND ND uglL 10/28/12 1.2 - 100 ND 4.4 J ND ND ND ND W1 04/25/13 0.96 - 100 1.0 J 1.0 J ND ND 1.6 J ND uglL 09/12/13 1.2 - 100 ND ND ND ND ND ND W1 04/25/14 1.2 - 100 ND ND ND ND ND ND uglL 10/02/14 1.2 - 100 ND ND ND ND ND ND W1 MO6115 1.2 - 100 ND ND ND ND ND ND uglL 10/07/15 1.2 - 100 ND ND ND ND ND ND W1 04/20/16 1.2 - 100 ND ND ND ND ND ND uglL 09/28/16 10 - 100 ND 11 J ND ND 11 J ND u(IIL 04/28117 70 - 100 23 B 79 B 19 B 36 B i6 B 33 J uq/L 10/17/17 10 - 100 ND ND ND ND ND ND U. 04/16/18 10 - 100 ND ND ND ND ND ND uq/L 10/18/18 10 20 - ND ND ND ND ND ND uq/L 04/12/19 10 20 - ND ND ND ND ND ND WL 1 10/08/19 10 201 1 ND ND ND ND ND ND Chladann WL 03/O= - - 5 ND ND ND ND ND ND No SW Standard uq/L 09/01/00 - - 5 ND ND ND ND ND ND uq/L 03/01/01 - - 5 ND ND ND ND ND ND uq/L 09/01/01 - - 5 ND ND ND ND ND ND uq/L 03/01/02 - - 5 ND ND ND ND ND ND uq/L 09/01/02 - - 5 ND ND ND ND ND ND uq/L M01103 - - 5 ND ND ND ND ND ND uq/L 10/01/03 - - 5 ND ND ND ND ND ND uq/L 03/01/04 - - 5 ND ND ND ND ND ND uq/L 09/01/04 - - 5 ND ND ND ND ND ND uq/L OS/01/05 - - 5 ND ND ND ND ND ND uq/L 10/01/05 - - 5 ND ND ND ND ND ND uglL 04/01/06 - - 5 ND ND ND ND ND ND uq/L 10/01/06 - - 5 ND ND ND ND ND ND UWL 04/10/07 - - - 0.16 0.16 2.5 J 0.69 J 0.6 J ND uq/L 09/25/07 - 0.37 J ND 8.4 1.2 J 1.2 J ND UWL 05/05/08 0.2 - 5 -- ND ND ND ND ND uq/L 12/04/08 0.2 - 5 -- 0.2 0.58 J 0.2 0.2 ND UWL 04/13/09 0.2 - 5 -- ND ND ND ND ND uq/L 10/20/09 0.2 - 5 ND ND 2.4 J 2.1 J 1.3 J ND UWL 04/30/10 0.083 - 5 -- ND 1.8 J ND ND ND uq/L 10/11/10 0.2 - 5 0.2 7.48 2.0 J 2.0 J ND uq/L OS/12111 0.7 - 5 ND ND ND J ND ND ND uq/L 10/07/11 0.7 - 5 ND ND 2.4 J 0.92 J 1.1 J ND UWL Ml 112 0.18 - 5 ND ND 1.0 J 0.45 J ND ND uq/L 10/28/12 0.18 - 5 ND ND 1.2 J ND ND ND uq/L 04/25/13 0.25 - 5 ND ND 0.51 J ND ND ND uq/L 09/12/13 0.18 - 5 ND ND 1.8 J 0.76 J 0.7: J ND uq/L 04/25/14 0.18 - 5 1.6 J ND 1.7 J 0.46 J 0.5J ND uq/L 10/02/14 0.18 - 5 1.2 J ND 0.95 J 1.0 J ND ND UWL MO6115 0.18 - 5 ND ND 0.49 J ND ND ND uq/L 10/07/15 0.18 - 5 ND ND 2.4 J 0.92 J 1.0 J ND uq/L 04/20/16 0.18 - 5 ND ND ND ND ND ND uq/L 09/28/16 0.18 - 5 ND ND 1.6 J ND ND ND ZUl 04/28117 0.18 - 5 ND ND ND ND ND ND uq/L 10/17/17 0.18 - 5 ND ND ND ND ND ND uq/L 04/16/18 0.18 - 5 ND ND ND ND ND ND uq/L 10/18/18 0.18 1.0 - ND ND ND ND ND ND uq/L 04/12/19 0.18 1.0 - ND ND ND ND ND ND WL 1 10/08/19 0.18 l.. I I ND ND ND ND ND ND Dib-ochl-ethane WL 03/O= - - 5 ND ND ND ND ND ND No SW Standard uq/L 03/01/01 - - 5 ND ND ND ND ND ND ml ONOJ102 - - 5 ND ND ND ND ND ND uq/L 09/01/02 - - 5 ND ND ND ND ND ND WL M01103 - - 5 ND ND ND ND ND ND uq/L 10/01/03 - - 5 ND ND ND ND ND ND uq/L 03/01/04 - - 5 ND ND ND ND ND ND uq/L 09/01/04 - - 5 ND ND ND ND ND ND uq/L OS/01/05 - - 5 ND ND ND ND ND ND uq/L 10/01/05 - - 5 ND ND ND ND ND ND uq/L 04/01/06 - - 5 ND ND ND ND ND ND uq/L 04/10/07 - - - ND ND 0.54 J ND ND ND ml 09/25/07 - - - ND ND 2.8 J ND ND ND uq/L 05/05/08 0.28 - 3 -- ND ND ND ND ND WL 12/04/08 0.32 - 3 -- ND ND ND ND ND uq/L 04/13/09 0.32 - 3 ND ND ND ND ND WL 10/20/09 0.32 - 3 ND ND ND ND ND ND uq/L 04/30/10 0.067 - 3 -- ND ND ND ND ND ml 10/11/10 0.32 - 3 -- 0.32 6.6 1.2 J 4.6 ND uq/L 05/12/11 0.63 - 3 ND ND ND ND ND ND WL 10/0]Al 0.63 - 3 ND ND ND ND ND ND uq/L 04/19/12 0.17 - 3 ND ND ND ND ND ND WL 10/26/12 0.17 - 3 ND ND ND ND ND ND uq/L 04/25/13 OA9 - 3 ND ND ND ND ND ND WL 09/12113 0.17 - 3 ND ND ND ND ND ND uq/L 04/25/14 0.17 - 3 ND ND ND ND ND ND WL 10/02114 0.17 - 3 ND ND ND ND ND ND uq/L 04/0 15 0.17 - 3 ND ND ND ND ND ND WL 10/0]115 0.17 - 3 ND ND ND ND ND ND uq/L 04/20/16 0.17 - 3 ND ND ND ND ND ND WL 09/26/16 0.17 - 3 ND ND ND ND ND ND uq/L 04/28/17 0.17 - 3 ND ND ND ND ND ND uq/L 10/17/17 0.17 - 3 ND ND ND ND ND ND uq/L 04/i 6118 0.17 3 ND ND ND ND ND ND uq/L 10/1 W18 0.17 1.0 - ND ND ND ND ND ND uq/L 04/12/19 0.17 1.0 - ND ND ND ND ND ND U.l 10/08/19 0.17 1 1.0 1 ND ND ND ND ND ND lk chloroben- uq/L 03/01/00 - - 5 ND ND ND ND ND ND SW Standard 100 uq/L uq/L ONO101 - - 5 ND ND ND ND ND ND uq/L 03/01/02 - - 5 ND ND ND ND ND ND WL 09/01/02 - - 5 ND ND ND ND ND ND uq/L 04/01/03 - - 5 ND ND ND ND ND ND WL 10/01/03 - - 5 ND ND ND ND ND ND uq/L 03/01/04 - - 5 ND ND ND ND ND ND WL 09/01/04 - - 5 ND ND ND ND ND ND uq/L O5/01/O5 - - 5 ND ND ND ND ND ND WL 10/01/05 - - 5 ND ND ND ND ND ND uq/L 04/01/06 - - 5 ND ND ND ND ND ND WL 04/10/07 - - - ND ND ND ND ND ND uq/L 09/25/07 - ND ND ND ND ND ND ml 05/05/08 0.2 - 1 -- ND ND ND ND ND uq/L 12/04/08 0.38 - 1 -- ND ND ND ND ND uq/L 04/13/09 0.38 - 1 -- ND ND ND ND ND uq/L 10/20/09 0.38 - 1 ND ND ND ND ND ND uq/L 04/30/10 0.1 - 1 -- ND ND ND ND ND uq/L 10/11/10 0.38 - 1 ND ND ND ND ND uq/L OS/12111 0.79 - 1 ND ND ND ND ND ND uq/L 10/07/11 0.79 - 1 ND ND ND ND ND ND uq/L Ml 112 0.19 - 1 ND ND ND ND ND ND uq/L 10/28/12 0.19 - 1 ND ND ND ND ND ND uq/L 04/25/13 0.14 - 1 ND ND 0.46 J ND 0.19 J ND uq/L 09/12/13 0.19 - 1 ND ND ND ND ND ND ml 04/25/14 0.19 - 1 ND ND ND ND ND ND uq/L 10/07J14 0.19 - 1 ND ND ND ND ND ND WL MO6115 0.19 - 1 ND ND ND ND ND ND uq/L 10/07/15 0.19 - 1 ND ND ND ND ND ND WL 04/20/16 0.19 - 1 ND ND ND ND ND ND uq/L 09/28/16 0.19 - 1 ND ND ND ND ND ND ml 04/28117 0.19 - 1 ND ND ND ND ND ND WL 10/17/17 0.19 - 1 ND ND ND ND ND ND uq/L 04/16/18 0.19 - 1 ND ND ND ND ND ND WL 10/18/18 0.19 1.0 - ND ND ND ND ND ND uq/L 04/12/19 0.19 1.0 - ND ND ND ND ND ND WL 10/08/19 0.19 1.0 1 ND ND ND ND ND ND Chlaarw?Ihane WL 03/O= - - 10 ND ND ND ND ND ND No No SW Standard uq/L - - 10 ND ND ND ND ND ND uq/L 03/01/01 - - 10 ND ND ND ND ND ND uq/L 09/01/01 - - 10 ND ND ND ND ND ND UWL 03/01/02 - - 10 ND ND ND ND ND ND uq/L 09/01/02 - - 10 ND ND ND ND ND ND uq/L M01103 - - 10 ND ND ND ND ND ND uq/L 10/01/03 - - 10 ND ND ND ND ND ND uq/L 03/01/04 - - 10 ND ND ND ND ND ND uq/L 09/01/04 - - 10 ND ND ND ND ND ND uq/L OS/01/05 - - 10 ND ND ND ND ND ND uq/L 10/01/05 - - 10 ND ND ND ND ND ND uq/L 04/01/06 - - 10 ND ND ND ND ND ND uq/L 10/01/06 - - 10 ND ND ND ND ND ND uq/L 04/10/07 - - - ND ND ND ND ND ND uq/L 09/25/07 - ND ND ND ND ND ND uq/L 05/05/08 0.23 - 1 -- ND ND ND ND ND uq/L 12/04/08 0.34 - 1 -- ND ND ND ND ND uq/L 04/13/09 0.34 - 1 -- ND ND ND ND ND uq/L 10/20/09 0.34 - 1 ND ND ND ND ND ND uq/L 04/30/10 0.05 - 1 -- ND ND ND ND ND uq/L 10/11/10 0.34 - 1 0.S2 B 0.34 0.34 B 0.62 B 0.43 J uq/L OS/12111 0.55 - 1 ND ND ND ND ND ND uq/L 10/07/11 0.55 - 1 ND ND ND ND ND ND uq/L Ml 112 0.13 - 1 ND ND ND ND ND ND uq/L 10/28/12 0.13 - 1 ND ND ND ND ND ND UWL 04/25/13 0.44 - 1 ND ND ND ND ND ND uq/L 09/12/13 0.13 - 1 ND ND ND ND ND ND uq/L 04/25/14 0.13 - 1 ND ND ND ND ND ND uq/L 10/02/14 0.13 - 1 ND ND ND ND ND ND uq/L MO6115 0.13 - 1 ND ND ND ND ND ND uq/L 10/07/15 0.13 - 1 ND ND ND ND ND ND uq/L 04/20/16 0.13 - 1 ND ND ND ND ND ND uq/L 09/28/16 0.13 - 1 ND ND ND ND ND ND uglL 04/28117 0.13 - 1 0.42 J ND ND 0.78 J OAl J ND uq/L 70/17/77 0.13 - 1 ND ND ND ND ND ND uq/L 04/16/18 0.13 - 1 ND ND ND ND ND ND uq/L 10/18/18 0.13 1.0 - ND ND ND ND ND ND U. 04/12119 0.13 1.0 - ND ND ND ND ND ND uq/L IWOW79 0.13 1.0 ND ND ND ND ND ND 4 GOLDER 4ds Febmary 2020 1668421.106 TABLE 6 Summary of Surface Water Monitoring Resuks Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina DelConstituent Reporting Sample Method Practical SWS Upstream Surface Water MonitoringPoints Downstream Surface y ce Water Monitoring Poln (SW Standard) SW Units pay Detection Quanllatlon Reporting Limit Limit Limit SW-1 SW-2 Si SW-4 SW-5 MelhNone Chlaitle ud/L 0&01/00 - - 10 ND ND ND ND ND ND NO SW Standard uglL 09/01/00 - - 70 ND ND ND ND ND ND ud/L OW01101 - - 10 ND ND ND ND ND ND uq/L 09/01/01 - - 10 ND ND ND ND ND ND ud/L OW01102 - - 10 ND ND ND ND ND ND uq/L 09/01/02 - - 10 ND ND ND ND ND ND ud/L M01103 - - 10 ND ND ND ND ND ND uq/L 10/01/03 - - 10 ND ND ND ND ND ND ud/L 0&01/04 - - 10 ND ND ND ND ND ND uq/L 09/01/04 - - 10 ND ND ND ND ND ND ud/L OS/01/05 - - 10 ND ND ND ND ND ND uq/L 10/01/05 - - 10 ND ND ND ND ND ND Ud/L 04/01/O6 - - 10 ND ND ND ND ND ND uq/L 10/01/06 - - 10 ND ND ND ND ND ND ud/L 04/10/07 - - - ND ND ND ND ND ND uq/L 09/2&07 - ND ND ND ND ND ND ud/L 05/05108 0.24 - 1 -- ND ND ND ND ND uq/L 12/04/08 0.53 - 1 -- ND ND ND ND ND ud/L 04/13/09 0.53 - 1 -- ND ND ND ND ND uq/L 10/20/09 0.53 - 1 ND ND ND ND ND ND ud/L 04/30/10 0.07 - 1 -- ND ND ND ND ND uq/L to/11/10 0.53 - 1 ND ND ND ND ND ud/L 0&12111 0.14 - 1 ND ND ND ND ND ND uq/L 10/07/11 0.14 - 1 ND ND ND ND ND ND ud/L 04/19/12 0.23 - 1 ND ND ND ND ND ND uq/L 10/2&12 0.23 - 1 ND ND ND ND ND ND ud/L 04/25/13 0.5 - 1 ND ND ND ND ND ND uq/L 09/12/13 0.23 - 1 ND ND ND ND ND ND ud/L 04/25/14 0.23 - 1 ND ND ND ND ND ND uq/L 10/02/14 0.23 - 1 ND ND ND ND 0.77 J ND ud/L 04/O6115 0.23 - 1 ND ND ND ND ND ND uq/L 10/07/15 0.23 - 1 ND ND ND ND ND ND ud/L 04/20/16 0.23 - 1 ND ND ND ND ND ND uq/L 09/2&16 0.23 - 1 ND ND ND ND ND ND Uo 04/2&17 0.23 - 1 ND ND ND ND ND ND uq/L 70/17/77 0.23 - 1 ND ND ND ND ND ND ug/L 0 1618 0.23 - 1 ND ND ND ND ND ND uq/L to/8/18 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 ud/L 1 10/08/19 0.23 1 1.0 1 ND ND ND ND ND ND Tnchl-theme ud/L 0&01/00 - - 5 ND ND ND ND ND ND SW Standard uglL 09/01/00 - - 5 ND NO ND NO NO NO Human Health=30 ug/L ud/L 0&01/01 - - 5 ND ND ND ND ND ND uq/L 09/01/01 - - 5 ND ND ND ND ND ND ud/L OW01102 - - 5 ND ND ND ND ND ND uq/L 09/01/02 - - 5 ND ND ND ND ND ND ud/L M01103 - - 5 ND ND ND ND ND ND uq/L 10/01/03 - - 5 ND ND ND ND ND ND ud/L 0&01/04 - - 5 ND ND ND ND ND ND uq/L 09/01/04 - - 5 ND ND ND ND ND ND ud/L 0&01/05 - - 5 ND ND ND ND ND ND uq/L 10/01/05 - - 5 ND ND ND ND ND ND ud/L 0401106 - - 5 ND ND ND ND ND ND uq/L 10/01/06 - - 5 ND ND ND ND ND ND ud/L 04/10/07 - - - ND ND ND ND ND ND uq/L 09/2&07 - ND ND ND ND ND ND ud/L 05/05108 0.25 - 1 -- ND ND ND ND ND uq/L 12/04/08 0.38 - 1 -- ND ND ND ND ND ud/L 04/13/09 0.38 - 1 -- ND ND ND ND ND uq/L 10/20/09 0.38 - 1 ND ND ND ND ND ND ud/L 04/30/10 0.13 - 1 -- ND ND ND ND ND uq/L to/11/10 0.38 - 1 ND ND ND ND ND ud/L 0&12111 0.72 - 1 ND ND ND ND ND ND uq/L 10/07/11 0.72 - 1 ND ND ND ND ND ND ud/L 04/19/12 0.15 - 1 ND ND 0.69 J ND ND ND uq/L 10/2&12 0.15 - 1 ND ND ND ND ND ND uq/L 04/25/13 0.23 - 1 ND ND ND ND ND ND uq/L 09/12/13 0.15 - 1 ND ND ND ND ND ND uq/L 04/25/14 0.15 - 1 ND ND ND ND ND ND uq/L 10/02/14 0.15 - 1 ND ND ND ND ND ND ud/L 04/O6115 0.15 - 1 ND ND ND ND ND ND uq/L 10/07/15 0.15 - 1 ND ND ND ND ND ND ud/L 04/20/16 0.15 - 1 ND ND ND ND ND ND uq/L 09/2&16 0.15 - 1 ND ND ND ND ND ND UP 04/2&17 0.15 - 1 ND ND ND ND ND ND uq/L 70/17/77 0.15 - 1 ND ND ND ND ND ND ug/L 04/16/18 0.15 - 1 ND ND ND ND ND ND uq/L to/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 ud/L 10/08/19 0.15 1.0 1 1 ND ND ND ND ND ND 1.4Dioxane uglL 10/1 W18 1.2 2.0 - ND ND ND 2.1 1.5 J ND (SW Standard=80 u.JL) ud/L 04/12/19 1.2 2.0 - ND 1.8 J ND ND ND ND g/L u 10/0&19 1.2 2.0 ND 1.3 J ND 1.2 J ND ND Tetrahydrgfuron ug/L 04/20/16 0.8 - - ND ND ND ND ND ND NO SW standard uq/L 09/26/16 0.8 - - ND ND ND ND ND ND uq/L 04/2&17 0.17 1 ND ND ND ND ND ND ug/L 10/18/18 0.53 1.0 - -- - -- - ND uq/L 04/12/19 0.53 1.0 - -- - -- - ND NC uo/L 10/OS/19 0.53 1.0 ND NC Notes: B= blank-nualified data Shaded = concentrations above applicable EPA MCL have been shaded. Bold = concentrations a` rn"applicable IMAC antl/or NC 2L have been bottled. Data prior to April 2017 provided by S&ME Engineering #= EPA Action Leval EPA Secontlary MCL Blanks = field, trip and method blanks IMAC- Interim Maumum Allowable Concen0ation (under INC 2L Rules) EPA MCL = United States Environmental Protection Agency Madmum Contaminant Level MDL = laboratory method detection limit ud/L = micrograms per liar mo L = milligrams per liter nM= nor mots SWS Reporting Limit = NCPQL pda to 2007 and NCSW SL starting on 01/1&07 = no data available a no limit established NC 2L = North Carolina Water Quality Standard ND = not detected above the 10 ralory detection limit or stated reporting limit J = Prior to the November 2018 event, J 8ags are aetimated values belay the SWS Reporting limit. Beginning With the November 2018 event, J flags are estimated values between MDL and PQL. Thefdlovtnadilutionswerenotadforthe OcWo 2019eeent: a mm,nvam1m,IIiumbv2,faJIDdnisl Laboratory method blank data was unavailable for data prior to April 2017. However, B flags for the 04/16109,10/07109, and 10/11/10 Were present on laboratory electronic files. 4 GOLDER 50(5 February 2020 1668421,106 TABLE 7 Summary of Surface Water Field Parameters Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Data 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 Specific Conductance (Field) us/cm 03/25/99 347 155 309 -- -- us/cm 09/23/99 811 123 487 -- -- us/cm 03/27/00 417 186 363 318 315 us/cm 09/13/00 303 233 ND 471 438 us/cm 03/12/01 6919 6145 6145 6393 5960 us/cm 09/13/01 6919 7324 6063 6393 5960 us/cm 03/07/02 420 377 577 561 555 us/cm 09/18/02 248 271 -- 449 469 US/cm 04/15/03 74 254 261 345 325 us/cm 10/15/03 215 256 357 334 340 US/cm 03/24/04 293 253 410 378 379 us/cm 09/22/04 242 223 234 424 1 us/cm 05/10/05 283 271 391 387 390 us/cm 10/11/05 167 215 319 264 269 us/cm 04/24/06 195 182 335 286 404 us/cm 10/16/06 - -- -- -- -- us/cm 04/10/07 31.9 28.9 43.6 42.9 43.5 us/cm 09/25/07 31.0 13.0 57.0 53.0 54.0 us/cm 05/02/08 -- -- -- -- -- us/cm 12/05/08 -- 31.6 32.6 31.1 29.1 us/cm 04/16/09 -- 19.8 23.8 26.5 24.9 us/cm 10/07/09 -- - -- -- - uS/cm 04/28/10 -- - -- -- - uS/cm 10/05/10 -- 27.9 54 38.9 35.7 us/cm 05/10/11 256 209 345 412 405 us/cm 10/06/11 309 218 529 462 446 us/cm 04/16/12 -- - -- -- - uS/cm 10/24/12 -- - -- -- -- us/cm 04/24/13 237 242 381 362 380 us/cm 09/09/13 327 266 461 439 448 us/cm 04/22/14 337 275 430 375 420 us/cm 10/01/14 276 228 454 444 441 us/cm 04/07/15 318 255 400 378 423 us/cm 10/06/15 229 151 337 299 284 us/cm 04/18/16 254 183 313 307 300 us/cm 09/26/16 293 214 439 412 427 us/cm 04/25/17 211 198 318 272 1272 us/cm 10/16/17 209 171 211 241 263 us/cm 04/16/18 233 215 234 217 227 us/cm 10/18/18 191 264 159 209 254 us/cm 04/08/19 129 210 158 270 248 us/cm 10/07/19 308 219 290 320 325 GOLDER 1of2 February 2020 1668421,106 TABLE 7 Summary of Surface Water Field Parameters Detected Constituents White Street Landfill - Phase I, Permit No. 41-03 Greensboro, North Carolina Detected Constituent Reporting Sample Upstream Surface Water Monitoring Points Downstream Surface Water Monitoring Points (SW Standard) Units Data SW-1 SW-2 SW-3 SW-4 SW-5 Temperature (Field) C 03/25/99 11.81 11.22 13.86 -- -- oc 09/23/99 18.45 17.18 21.83 - -- oC 03/27/00 14.85 15.73 17.17 15.53 14.29 oc 09/13/00 25.27 23.45 - 24.96 25.53 oC 03/12/01 14.86 16.71 16.71 15.51 16.52 oc 09/13/01 14.86 16.65 16.74 15.51 16.52 oC 03/07/02 12.12 13.02 16.45 14.40 13.20 oc 09/18/02 18.66 16.70 - 19.05 18.96 oC 04/15/03 21.65 22.24 20.92 20.11 17.23 oc 10/15/03 17.39 18.39 20.06 18.45 20.33 oC 03/24/04 16.00 18.06 17.17 15.83 17.22 oc 09/22/04 22.67 21.95 25.28 24.17 22.95 oC 05/10/05 24.09 22.85 23.97 23.69 21.78 oc 10/11/05 18.60 18.30 20.60 20.00 19.80 oC 04/24/06 18.30 16.26 18.47 19.05 22.24 oc 10/16/06 - -- -- - -- oc 04/10/07 10.55 8.05 12.20 14.82 13.49 oc 09/25/07 17.06 21.61 23.84 18.61 19.48 oc 05/02/08 - -- -- - -- oc 12/05/08 - 7.00 11.30 9.50 8.80 oc 04/16/09 - 12.20 14.30 14.50 13.20 oc 10/07/09 - -- - - -- oc 04/28/10 - -- - - -- oc 10/05/10 - -- - - -- oC 05/10/11 19.10 17.50 19.30 19.40 19.50 oc 10/06/11 16.16 13.10 19.10 17.80 18.67 oC 04/16/12 - -- -- - -- oc 10/24/12 - -- -- - -- oC 04/24/13 16.35 14.24 17.40 16.28 16.20 oc 09/09/13 24.70 22.80 25.50 24.80 25.00 oC 04/22/14 15.70 12.90 16.80 17.70 15.30 oc 10/01/14 19.33 19.21 21.28 19.92 22.08 oc 04/07/15 17.50 16.70 18.50 17.90 16.00 oc 10/06/15 18.76 17.11 21.82 20.90 19.20 oC 04/18/16 18.85 18.38 19.83 19.23 18.57 oc 09/26/16 21.60 20.60 23.80 22.50 22.60 oC 04/25/17 21.17 19.60 20.20 20.56 10.05 oc 10/16/17 15.42 15.62 11.55 16.71 16.86 oC 04/16/18 11.75 9.66 8.67 12.24 12.24 oc 10/18/18 14.7 14.9 14.9 13.2 19.8 oc 04/08/19 17.4 15.7 19.1 17.5 19.3 oc 10/07/19 1 20.0 18.6 19.7 19.8 21.1 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 Oxidation Reduction Potential (field) mV 04/25/17 69.8 50.6 72.3 79.4 77.3 mV 10/16/17 81.7 60.9 174.0 81.3 10.7 mV 04/16/18 119.5 95.2 202.0 190.5 115.8 mV 10/18/18 115.1 61.7 97.2 143.1 7.9 mV 04/08/19 124.5 143.2 5.3 101.8 332.5 mV 10/07/19 137.1 17.2 179.6 159.5 170.9 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 mq/L 10/18/18 5.95 10.74 6.99 7.06 5.81 mq/L 04/08/19 6.91 7.94 6.73 7.19 9.47 m /L 10/07/19 5.32 4.89 5.90 5.03 6.19 Notes: S.U. = Standard Units NTU = Nephelometric Turbidity Units uS/Cm = microsiemens per centimeter mq/L= millipramer per liter - = no data available Data prior to April 2017 provided by S&ME Engineering GOLDER 2of2 Figures APPENDIX A Groundwater and Surface Water Sampling Logs 80 SW-3 LOCATED —1600 FT. WEST —4juu r 1 . VVCJ I �o SW-2 LOCATED —500 FT. WEST 1 c _ CLIENT CITY OF GREENSBORO CONSULTANT — MSW LANDFILL —,LIMITS OF WASTE YYYY-M M-D D DESIGNED � U L D E R PREPARED REVIEWED GOLDER ASSOCIATES NC, INC. APPROVED SW-4 LOCATED —900 FT. EAST 2019/02/12 ALM KFL DYR RPK LEGEND O O pp— �-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 OCTOBER 16, 2018. 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. Rsqy� D M0. Opp , �$� � _ � • � � a��a� �-- r 0 KEELYRD 01 I ^� J M/iF/NE AYLIct RD fn .- 0 5 — SITE LOCATION MAP NOT TO SCALE 0 400 800 1" = 400' FEET PROJECT WHITE STREET LANDFILL CITY OF GREENSBORO GREENSBORO, NORTH CAROLINA TITLE GROUNDWATER SURFACE CONTOUR MAP OCTOBER 16, 2018 PROJECT NO. PHASE 166842117 103 0 FIGURE 1 140 GOLDER Project Name: W k 1ff- S�-i�� C �v11% Well ID: /�ti/- 1-3t Well Diameter: 2 inches Depth to Bottom: , 0 feet Pumping Rate: mUmin. Well Location: DATE: 10- 7' 1 T GROUNDWATER SAMPLING LOG Project No./Phase No.: I 6a R 4-Z--t Sampler(s): F, L q�o Initial Depth to Water: 'Z_ 0, 3 0 feet Water Column Thickness: feet System Volume: l !-A mL Equipment: YS/ I -- PGA', f�11d-4.' f-L Meter, C%r1-1 +/- 0.1 +/- 5% <10 +!- 10% or 0.2 +/- 10 (ideal) Comments (weather conditions, color, type of sample, purge -water management, etc.): Weather: Cloud 5 Signature: Date: r 0 — 7 ( P QA/QC Sign Off: :L 14 4 Q Date: (&- S /--/t GOLDER DATE: l 6— C'1- wgcf GROUNDWATER SAMPLING LOG Project Name: White Street landfill Project No./Phase No.: 1668421 Well ID: -1 Sampler(s):_E_'AqtSRo t4' Well Diameter: 2 inches Initial Depth to Water: 'JZ, 55 leet Depth to Bottom: feet Water Column Thickness: *11 45 feet Pumping Rate: 146 mL/min. System Volume: (5T5. co mL Equipment: YSI Pro Plus, Hach 2100Q, Water level meter, dedicated bladder pump, MP-15 +/- 0.1 +/- 5% <10 +/- 10% or 0.2 +/- 10 (ideal) �� • �■�lZr7l� i Comments (weather conditions, color, type of sample, purge -water management, etc.): Weather: S U vKvi CtrJ cAo-Aq ,_ l Cz,� 165 - Begin purging @ q%8 Signature: QA/QC Sign Off: `�IIA„J %Gtti� Date: ( b'a - 2_c)19 Date: ) GOLDER DATE: 1 V GROUNDWATER SAMPLING LOG Project Name: White Street landfill Project No./Phase No.: 1668421 Well ID: #- 2 Sampler(s): .-E:-daske N•i` Q�a�pg Well Diameter: 2 inches Initial Depth to Water: 8. Z1. feet Depth to Bottom: Z 4.O feet Water Column Thickness: i5 �19 feet Pumping Rate: 120 mL/min. System Volume: (�-+S. b mL Equipment: YSI Pro Plus, Hach 2100Q, Water level meter, dedicated bladder pump, MP-15 +/- 0.1 +/- 5% <10 +/- 10% or 0.2 +/- 10 (ideal) Time pH S.U.(US/CM) Sp. Cond. Turb NTU) Dis 02 (m /L Temp. °C ORP millivolts DTW feet 1'11 6 16sc? tiv.L G&'+ 19.Z 7-�T-o 5 /I120 :Lq4o 1G.G Sq-2. -411.0 6.6 ct.`ki 2,t; 5,clg 2.090 61.3 J4-1 S .4 113 0 S 19 2CAz ci . 1 G-o2 23, ;L ©. 10L- 14.4 -0 1c(. 11 1Q� / -1�t. R 16.2. 66. 4 "ARL-2-1-3 3 3-,. e ZZ . 8 lo. ll-1210 6 3.42 °I. 6 ' Z1. 9 to. S5 4ZZ0 115 46_ .<S -i4.4- .-W-Z to.5-:� i z 1 Ib•U &14 V1- q -rl 10. 6s' z �6. &A Zo. (3 1 v.4 d- G Comments (weather conditions, color, type of sample, pu Weather: a^Ay + k Signature: QA/QC Sign Off: fin. management, etc.): 1Zf,)2 4n WCe Date: (6 Date: 12'3(- f � 1a.te zo. Vy GOLDER DATE: [ 6 - Q - C q GROUNDWATER SAMPLING LOG Project Name: ---� White Street landfill Project No./Phase No.: 1668421 Well ID: Sampler(s): E. Vasko Well Diameter: 2 inches Initial Depth to Water: / -5¢ feet Depth to Bottom: 0 feet Water Column Thickness: , 4-6 feet Pumping Rate: J C) mUmin. System Volume: /Z-71 mL Equipment: YSI Pro Plus, Hach 2100Q, Water level meter, dedicated bladder pump, MP-15 +/- 0.1 +/- 5% <10 +/- 10% or 0.2 +/- 10 (ideal) RM Comments (weather conditions, color, type of sample, purge -water management, etc.): Weather: 6t ov d5 Begin purging @ Signature: cn" Vcv'? Date: lG - 1—to( QA/QC Sign Off: �_t,,,�Q 96A,...- Date: 1 Z�� GOLDER DATE: I o- - (q GROUNDWATER SAMPLING LOG Project Name: White Street landfill Project No./Phase No.: 1668421 Well ID: � Sampler(s): E. Vasko 01 Well Diameter: 2 inches Initial Depth to Water: feet Depth to Bottom: (5,0 feet Water Column Thickness: (, o 6 feet Pumping Rate: 1 / G mUmin. System Volume: 10 -76 mL Equipment: YSI Pro Plus, Hach 2100Q, Water level meter, dedicated bladder pump, MP-15 +/- 0.1 +/- 5% <10 +/- 10% or 0.2 +/- 10 (ideal) Comments (weather conditions, color, type of sample, purge -water management, etc.): Weather: C f Pgt- $ jam; p5 Begin purging @ f C J cl Signature: QA/QC Sign Off: Date: l d -q_ N Date: i?�I DATE: 1 0 -1 — 1 q G O L D E R SURFACE WATER SAMPLING LOG Project Name: White Street Landfill Project No./Phase No.: 1668421 Sample ID: S-W _ ( Sampler(s): E. Vasko Sampling Location: Equipment: YSI Pro Plus, Hach 2100Q Time 160, pH S.U. '-7. S6 Sp. Cond. US/cm 3 G7, .7 Turb. ntu f2� Dis. Oy mg/L 5 32 Temp. C ORP my 137 Surface Water Sampling Location Sketch r / Comments (sample methodology, weather conditions, color, silt, etc.): Signature: V �?ff4 Date: QA/QC Sign Off: �� Date: 12 -3/- l f GOLDER SURFACE WATER SAMPLING LOG Project Name: White Street Landfill Project No./Phase No.: Sample ID: �s .-z' Sampler(s): Sampling Location: Equipment: YS/ Pro Plus, Hach 2100Q Time 0�3 pH S.U. 7 7, C� Sp. Cond. US/cm Turb. ntu 3 ,� Dis. OZ m /L Temp. t� ORP my �, 2 1668421 E. Vasko Surface Water Sampling Location Sketch s6W-z Comments (sample methodology, weather conditions, color, silt, etc.): C V-1P tow Signature: Date:!„ QA/QC Sign Off: Date: G 0 L D E R DATE: 10 -y_ K SURFACE WATER SAMPLING LOG Project Name: White Street Landfill Project No./Phase No.: Sample ID: '5 W Sampler(s): Sampling Location: Equipment: YSI Pro Plus, Hach 2100Q Time C)q S pHS.U. Sp. Cond. us/cm Turb. ntu 3 �' Dis.02 m /L S q0 Temp. C f 0mP �!q,b 1 Al 1668421 E. Vasko Surface Water Sampling Location Sketch il Y Comments (sample methodology, weather conditions, color, silt, etc.): 0vCM4 c�G- Cf�w Signature: c/' Wy ��Jl�//� Date: QA/QC Sign Off: 0/ 03 4 GOLDER DATE: SURFACE WATER SAMPLING LOG Project Name: White Street Landfill Project No./Phase No.: Sample ID: S w - I-- Sampler(s): Sampling Location: Equipment: YSl Pro Plus, Hach 2100Q Time /035 pH S.U. 7.9'Z Sp. Cond. us/cm 3/q,7 Turb. ntu 'p Dis. OZ m /L S G3 Temp. °C ORP my l 1668421 E. Vasko Surface Water Sampling Location Sketch 16 S-11 Comments (sample methodology, weather conditions, color, silt, etc.): Signature: "' li vWY/G� Date: QA/QC Sign Off: Date: / 2 W. if i _ o GOLDER DATE: t ©— -7, SURFACE WATER SAMPLING LOG Project Name: White Street Landfill Project No./Phase No.: Sample ID: ,5' W Sampler(s): Sampling Location: Equipment: YSI Pro Plus, Hach 2100Q Time (S Es pH S.U. T SD Sp. Cond. US/cm 2 f M Tu rb. ntu ,.3 f q � Dis. OZ mg/L 6,11 Temp. oC ? ORP my 1668421 E. Vasko Surface Water Sampling Location Sketch FEU w 7 Sw-S Comments (sample methodology, weather conditions, color, silt, etc.): Signature: Date: QA/QC Sign Off: Date: / z -31-11 APPENDIX B October 2019 Groundwater Certificates -of -Analysis, Chain -of - Custody Forms and Laboratory Data Reviews GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL G 4 L D E R LABORATORY DATA REVIEW Page 1 of 3 Project Name: White Street Landfill — Phase I Project Reference Number: 1668421.106 Sampling Event Date: October 7-9, 2019 Review Date: November 4, 2019 Report #. CB16197 Initials: NTT Review: RPK Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain -of -custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: Region III Modifications to Functional Guidelines for Organic Data Review Multi -Media, Multi -Concentration, September 1994; Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility/C & D List X NC Appendix I VOAs and RCRA Metals NC Appendix I + Detects NC Appendix II NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW NTT COC was properly signed by all parties. NTT Correct project name and number are on the form. NTT Sample receipt condition at laboratory was acceptable. NTT Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES NTT Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL O D LABORATORY DATA REVIEW E R Page 2 of 3 *> Review Criteria Method Anallytes 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 require ents SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 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. ➢ The Selenium method blank contains analyte at the concentration above the MDL and /or greater than one-half the MRL. The analyte was not detected in the sample. 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). ➢ 1,4-Dioxane matrix spike recovery was outside acceptance limits due to high concentrations of analyte in source sample. The QC 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 G 0 L D E R LABORATORY DATA REVIEW 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. ➢ 1,4-Dioxane (10X) in 1-1 and 1-3 ➢ 1,4-Dioxane (5X) in 1-2 ➢ Antimony and thallium (2x) all points NTT The report provides the reporting limit for each constituent. NTT The results were reported at or below their proper reporting limits (i.e. at or below standards at MDLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. NTT No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Interim Maximum Allowable Concentrations (IMACs) or surface water standards in wells or field/equipment/trip blanks or above applicable Surface Water Standards for surface water points. ➢ Barium (NC 2L = 700 ug/L) • 1-4 @ 795 ug/L ➢ Copper (Chronic SW Standard = 2.7 ug/L) • SW-2 (upstream) @ 2.92 J ug/L ➢ Benzene (NC 2L = 1 ug/L), J flag should be added: • 1-1 @ 4.8 ug/L ➢ 1,4 Dioxane (NC 2L= 3 ug/L) • 1-1 @ 250 ug/L • 1-2 @ 140 ug/L • 1-3 @ 360 ug/L • 1-4 @ 43 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.: GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL G 4 L D E R LABORATORY DATA REVIEW Page 1 of 4 *> Project Name: White Street Landfill — Phase I, II Project Reference Number: 1668421.106 Sampling Event Date: October 7-9, 2019 Review Date: November 5, 2019 Initials: NTT Report #: CC16325 Signature: Date: I -? /f _ QA/QC Sign Off: Date: /f - 7-1 f 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-Concentr6tion, 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. NTT Sample receipt condition at laboratory was acceptable. NTT Each sample and blank submitted for analysis appears in the report. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL O D LABORATORY DATA REVIEW E R Page 2 of 4 *> 2.0 SAMPLE HOLDING TIMES NTT Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). Review Criteria Method Anallytes 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). ➢ Decachlorobiphenyl surrogate recovery outside acceptance limits. 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). ➢ The 4,4'-DDT spike recovery was outside acceptance limits for the 8081 B MS and/or MSD. The QC batch was accepted based on acceptable LCS recovery. ➢ The Arsenic and Selenium spike recoveries were outside acceptance limits for the MS and /or MSD. The QC batch was accepted based on acceptable LCS recoveries. ➢ The Cyanide and Sulfide spike recoveries were outside acceptance limits for the MS and/or MSD. The QC batch was accepted based on acceptable LCS recoveries. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL O D LABORATORY DATA REVIEW E R Page 3 of 4 ➢ Arsenic post -digestion spike did not meet method requirements due to confirmed matrix effects. ➢ 1,4-Dioxane LCS/LCSD were analyzed in place of MS/MSD. ➢ Precision 4-Nitrophenol between duplicate matrix spikes of the same sample was outside acceptance limits. The QC batch was accepted based on acceptable LCS recovery. ➢ Precision Cyanide between duplicate matrix spikes of the same sample was outside acceptance limits. The QC batch was accepted based on acceptable LCS recovery. ➢ The Kepone associated continuing calibration verification standard exhibited low bias; the reported result for 4103-MW13 should be considered to be a minimum estimate. 4.0 ANALYTE LISTS/METHODS NTT The proper number of constituents are present for each analyte list as identified above (including detects where applicable). NTT Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING NTT All analytical reporting associated with the event was performed by the contracted lab NTT Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been `flagged' with a 'B' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 1 OX for commonly detected laboratory contaminants -acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. NTT It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. ➢ Antimony and Thallium (2X) on all samples. 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 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL O D LABORATORY DATA REVIEW E R Page 4 of 4 .4 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 @ 4.93 ug/L (J) • SW-5 @ 1.78 ug/L ➢ Bis(2-ethylhezyl)phthalate (NC 2L= 3 ug/L) • MW-13 @ 3.7 ug/L (J) 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.: GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: White Street Landfill — Phase 1,11,111 SW Project Reference Number: 1668421.106 Sampling Event Date: October 7-9, 2019 Review Date: November 4, 2019 Report #. C1316291 Signature: 1, 1 Date: QA/QC Sign Off: Date: _[/ G 0 L D E P Initials: NTT 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 NTT COC was properly signed by all parties. NTT Correct project name and number are on the form. NTT Sample receipt condition at laboratory was acceptable. NTT Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES NTT Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL GOLDEP LABORATORY DATA REVIEW Page 2 of 3 Review Criteria Method Anallytes 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 da s EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW NTT Laboratory analyzed at least one internal blank for each method, where applicable. NTT Laboratory blank is interference -free. NTT Surrogate recoveries are provided for each analytical method, where applicable. NTT Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). NTT MS/MSD/LCS data results are provided for each analytical method. NTT MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). 4.0 ANALYTE LISTS/METHODS NTT The proper number of constituents are present for each analyte list as identified above (including detects where applicable). NTT Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING NTT All analytical reporting associated with the event was performed by the contracted lab. NTT Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been `flagged' with a 'B' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 1 OX for commonly detected laboratory contaminants -acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. NTT It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 1 Ox resulting in an analytical detection of 1.0 should GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL G O L D E R LABORATORY DATA REVIEW Page 3 of 3 be reported as 10). Those that have been diluted are listed below with the dilution factor. ➢ Antimony and Thallium (2X) on all samples. NTT The report provides the reporting limit for each constituent. NTT The results were reported at or below their proper reporting limits (e.g., MDLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. NTT No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Interim Maximum Allowable Concentrations (IMACs) in wells or field/equipment/trip blanks or above applicable Surface Water Standards for surface water points. ➢ Vanadium (NC2L=0.3 uc1/L) • SWA @ 2.45 ug/L(J) • SW-3 @ 2.33 ug/L (J) • SW-4 @ 1.96 ug/L (J) 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.: (� GOLDER golder.com