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Home My WebLink About8202_SampsonCoMSWLF_20170719_GWMReport (2) FIRST SEMI-ANNUAL 2017 SAMPLING EVENT Sampson County Disposal, LLC Active MSW and C&D Landfills, Permit No. 82-02 Sampson County, North Carolina Submitted To: Sampson County Disposal, LLC 7434 Roseboro Highway (NC Highway 24) Roseboro, NC 28382 Submitted By: Golder Associates NC, Inc. 5B Oak Branch Drive Greensboro, NC 27407 USA July 2017 073-9603717.100 WATER QUALITY MONITORING REPORT Golder Associates NC, Inc. 5B Oak Branch Drive Greensboro, NC. 27407 USA Tel: (336) 852-4903 Fax: (336) 852-4904 www.golder.com Golder Associates: Operations in Africa, Asia, Australasia, Europe, North America and South America July 19, 2017 073-9603717.100 Mr. Ervin Lane Department of Environmental Quality Division of Waste Management, Solid Waste Section 1646 Mail Service Center Raleigh, North Carolina 27699-1646 RE: WATER QUALITY MONITORING REPORT, FIRST SEMI-ANNUAL 2017 SAMPLING EVENT SAMPSON COUNTY DISPOSAL, LLC ACTIVE MSW AND C&D LANDFILLS PERMIT NO. 82-02 SAMPSON COUNTY, NORTH CAROLINA Dear Ervin, On behalf of Sampson County Disposal, LLC (Sampson County), a subsidiary of Waste Industries USA, Inc. (Waste Industries), Golder Associates NC, Inc. (Golder) is submitting the enclosed Water Quality Monitoring Report, which documents the results of the May 8 - 10, 2017, compliance monitoring event and June 23, 2017, verification monitoring event. Groundwater, surface water, and leachate samples were analyzed for North Carolina (NC) Appendix I constituents, with the exception of MW-100B, which was analyzed for the NC Appendix I list of inorganic constituents per the approved monitoring plan. Samples for the Construction and Demolition (C&D) landfill wells were also analyzed for the other required parameters for C&D landfills, as specified in Title 15A NCAC 13B.0544 including tetrahydrofuran, and the leachate sample was also analyzed for additional required parameters. At the MSW facility, five inorganic constituents (beryllium, chromium, cobalt, nickel, and zinc) were detected at concentrations above their respective Solid Waste Section Limits (SWSLs) in samples from one or more downgradient compliance monitoring points at the active MSW landfill during the May 2017 monitoring event. The concentrations of two of these metals (chromium and cobalt) were above the established groundwater standards as reported in the 14-day notification/Alternate Source Demonstration (ASD) dated July 19, 2017 but are interpreted to be naturally occurring based on available data. Estimated concentrations of cobalt and vanadium were also reported to be above their respective groundwater standards but below the SWSLs in samples from one or more downgradient monitoring points; no further action is warranted for these estimated concentrations. One organic constituent (toluene) was detected at concentrations above the SWSL in the sample from downgradient compliance monitoring point MW-106. During the June verification event, no toluene was detected at MW-106 and the original result is considered suspect. At the C&D facility, six NC Appendix I inorganic constituents (barium, chromium, cobalt, copper, vanadium, and zinc) were reported at concentrations greater than their respective SWSLs in samples from one or more downgradient monitoring wells during the May 2017 monitoring event. Indicator parameters iron and manganese were also detected above their respective SWSLs and groundwater standards in samples from one or more downgradient monitoring wells during this event. The concentrations of chromium, cobalt, iron, manganese, and vanadium were above their respective groundwater standards as reported in the 14-day notification/ASD dated July 19, 2017. The dissolved concentration of vanadium for MW-4N was non-detect; the total vanadium concentration is interpreted to be biased high by entrained sediment as evidenced by relatively high field turbidity values. Well re-development is recommended for MW-4N prior to the next compliance monitoring event. Estimated concentrations of cobalt and vanadium were also reported to be above their respective groundwater standards but below the SWSLs in samples from one or more downgradient monitoring points; no further July 2017 i 073-9603717 Table of Contents COVER LETTER 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 ................................................ 4 2.1 Visual Inspection Program ............................................................................................................ 4 2.2 Well Network and Groundwater Elevation Measurements ........................................................... 4 2.3 May 2017 Monitoring Event .......................................................................................................... 5 2.4 June 2017 Verification Groundwater Monitoring Event ................................................................ 6 2.5 Laboratory Analysis Program ........................................................................................................ 6 2.6 May 2017 Sampling Results ......................................................................................................... 6 2.7 June 2017 Verification Sampling Results ..................................................................................... 7 3.0 LABORATORY AND FIELD QA/QC ................................................................................................. 7 4.0 DATA EVALUATION ......................................................................................................................... 7 4.1 North Carolina Groundwater and Surface Water Standard Comparisons .................................... 7 4.2 Additional Evaluations ................................................................................................................... 8 5.0 CONCLUSIONS ................................................................................................................................ 8 6.0 REFERENCES .................................................................................................................................. 9 List of 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 in MSW Wells Table 5 Summary of Field Parameters for MSW Wells Table 6 Summary of Groundwater Monitoring Results Detected Constituents in C&D Wells Table 7 Summary of Field Parameters for C&D Wells Table 8 Summary of Surface Water Monitoring Results Table 9 Summary of Surface Water Field Parameters Table 10 Summary of Detected Leachate Parameters List of Drawings Drawing 1 Groundwater Contour Map, May 8, 2017 List of Appendices Appendix A Groundwater and Surface Water Sampling Logs Appendix B May 2017 Groundwater Certificates-of-Analysis, Chain-of-Custody Forms and Laboratory Data Reviews July 2017 1 073-9603717 1.0 INTRODUCTION This report summarizes the monitoring results from the May 8 - 10, 2017, groundwater, surface water, and leachate sampling at the active Sampson County, LLC Municipal Solid Waste (MSW) and Construction & Demolition (C&D) Landfills in Sampson County as well as the results of the June 23, 2017, verification sampling. The active MSW Landfill facility is a Subtitle D facility and is monitored in accordance with Title 15A of the North Carolina Administrative Code (NCAC) Subchapter 13B.1633. Groundwater at the closed C&D Landfill is monitored in accordance with Title 15A NCAC 13B.0544. The facility is located on the northern half of the Sampson County Landfill property and is comprised of the Phase 1 active Subtitle D lined MSW landfill and one active C&D landfill. The facility is owned and operated by Sampson County, LLC, a subsidiary of Waste Industries, Inc., under Permit No. 82-02 issued by the North Carolina (NC) Department of Environmental Quality (DEQ, formerly NC Department of Environment and Natural Resources). The southern half of the landfill property is comprised of one closed Subtitle D lined MSW landfill and one closed C&D landfill, which are covered under Permit No. 82- 01. The results for the closed facility are submitted under separate cover. 1.1 Site Description and Background The location of the facility is shown on the inlay on Drawing 1. The Sampson County Landfill is located approximately 6.5 miles west of Clinton, North Carolina in Sampson County near the rural community of Snow Hill. Access to the site is from Roseboro Highway (N.C. Highway 24), south of the site. The Bearskin Swamp is located along the eastern property boundary and drains to the southwest into Little Coharie Creek. The location of this surface water feature is shown on Drawing 1. Based on the topography as shown on Drawing 1, topographic surface elevations at the facility range from approximately 130 feet above mean sea level (AMSL) along the perimeter of the C&D disposal area on the southeastern portion of the facility, to nearly 250 feet AMSL in the southeastern portion of the MSW disposal area. The site is surrounded predominantly by wooded, agricultural, or rural residential properties. The Permit 82-01 closed MSW and C&D landfills are located south of the active landfills. The property also includes a closed, unlined disposal area owned and maintained by Sampson County. This area is located south of the active facility. Roseboro Highway (N.C. Highway 24) is located to the south of the active landfills. 1.2 Compliance Monitoring History Groundwater monitoring at the facility was initiated in October 1996. The facility’s approved MSW monitoring network is currently comprised of eight monitoring wells, which monitor the uppermost aquifer beneath the facility. Monitoring wells MW-102A and MW-103A are the upgradient background wells for the MSW landfill. An additional upgradient background well (MW-100B) is monitored for NC Appendix I July 2017 2 073-9603717 inorganic constituents. Monitoring well MW-100B was installed as a replacement well MW-100A prior to the May 2010 sampling event due to site construction activities. Wells MW-104, MW-105A, MW-106, MW-107S, and MW-108 are downgradient compliance wells for the MSW landfill. Additionally, upgradient well MW-1N and downgradient wells MW-2N, MW-3N, MW-4N, MW-5AN, and MW-5BN monitor groundwater at the C&D landfill. Groundwater beneath the two disposal units is currently monitored by a combined total of 14 monitoring wells. In addition to the wells, groundwater quality is also monitored at GGI Outfalls 1 and 2, gravity groundwater intercept outfall sampling locations. GGI Outfall 1 is located east of the MSW disposal area, while GGI Outfall 2 is located north of the MSW, both outfalls discharging into wetland areas. Monitoring well MW-107D had been sampled in previous events as part of an assessment of volatile organic constituents (VOCs) detected in MW-107S. Historical analytical results for samples from MW-107S and MW-107D indicate that VOCs have been present in groundwater, and may be related to landfill gas impacts to groundwater and/or historical leachate seeps along the adjacent side slopes as discussed in the September 20, 2007, meeting with the Solid Waste Section. The corrective action for these potential sources was implemented with the initial installation of several active gas extraction wells during final capping activities, as well as the installation of additional landfill gas extraction wells near the eastern slope of the facility. Data for samples from MW-107S and MW-107D indicated that concentrations of VOCs in groundwater samples are below SWSLs and that these corrective measures improved groundwater quality in this area. The NC DEQ granted approval to discontinue sampling monitoring well MW-107D in electronic correspondence dated October 24, 2012. The approval to discontinue sampling MW-107D is contingent upon being able to collect a sample from MW-107S and that no quantifiable detections of VOCs are reported in the sample collected from MW-107S. If MW-107S is dry, or if VOCs are reported at quantifiable concentrations, then the facility must resume sampling MW-107D. The facility’s monitoring network also includes three surface water sampling points, SW-1, SW-4, and SW-5. Surface water point SW-1 is the facility’s upstream sampling point located along Bearskin Swamp north of the active facility. Surface water point SW-4 is located downstream and north of the MSW disposal area along an unnamed tributary to the Bearskin Swamp. Surface water point SW-5 is a second downstream sampling location located east of the active facility in a drainage channel into the wetlands area. Surface points SW-1, SW-4, and SW-5 are sampled in conjunction with the groundwater monitoring wells in accordance with the facility’s permit and Water Quality Monitoring Plan. 1.3 Hydrogeologic Setting The facility is located in the western portion of the Coastal Plain Physiographic Province of NC. The geologic units of this region are relatively young, dating from the Cretaceous Period to the present, and have been formed through transgression and regression of the Atlantic Ocean. The natural topography is July 2017 3 073-9603717 flat to gently rolling with the upland surfaces gradually sloping downward in a southeasterly direction (S&ME 1992). The site is underlain by sands, silts, and clays of the Black Creek Formation, which consists of crossbedded layers of black to gray thinly-laminated clay and sand lenses of varied thickness and grain size. The formation is rich in mica, lignite, and iron sulfides. The Tuscaloosa formation underlies the Black Creek Formation and is comprised of gray to white sand and gravel with clay lenses (NCGS 1985). An unconformity forms the contact between the two formations with some interfingering of the two layers in the transition zone (NCGS 1960). The uppermost groundwater beneath the facility is present in a shallow, unconfined aquifer comprised of sands mixed with thin clay seams and larger seams of fine sand. Beneath the uppermost aquifer, a clay confining layer is present generally at a depth of approximately 20 - 25 feet below ground surface (BGS). The clay confining layer generally consists of black or dark gray silty clay with thin seams of light gray fine sand (S&ME 1992). Groundwater occurs at depths varying from approximately 4 - 16 feet BGS (plus or minus) across the entire site. Depth-to-water measurements obtained during the November 2016 monitoring event are summarized in Table 1 and were used to prepare a groundwater surface contour map presented on Drawing 1. Surface water and groundwater at the site generally flows to the northeast and east toward Bearskin Swamp located along the eastern property boundary. The Bearskin Swamp flows south to southwest and drains into Little Coharie Creek, located approximately two miles southwest of the facility. The groundwater contour map and interpreted flow directions are generally consistent with previously submitted interpretations for this facility. Based on the May 2017 groundwater contour map, the hydraulic gradient in the shallow aquifer underlying the site, as measured along the conceptual flow path shown on the contour map, was calculated to be approximately 0.008 feet/foot. Groundwater velocities were calculated using a hydraulic conductivity of 1.295 X 10-2 centimeters per second (cm/s), which is the average of the hydraulic conductivities calculated for the hydrogeologic units present at the facility (GNRA December 1999). The estimated effective porosity of the shallow aquifer is also based on the average of the effective porosities for the hydrogeologic units, which is 0.25 (GNRA December 1999). Using the above values, the estimated rate of groundwater flow for the uppermost aquifer beneath the facility was calculated using the following modified Darcy equation: Vgw = Ki/ne where Vgw = average linear velocity (feet/year), K = hydraulic conductivity (feet/year), i = horizontal hydraulic gradient, and ne = effective porosity. The average estimated linear groundwater flow velocity under the waste management unit is approximately 412 feet/year toward the northeast, which is generally consistent with previous estimates July 2017 4 073-9603717 (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 May 2017 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 active MSW and C&D landfills by the sampling personnel. This program includes physical indicators such as potential water table mounding beneath the waste management unit, physical examination of any stresses in biological communities, visible signs of leachate migration (i.e., leachate seeps), unexplained changes in soil characteristics, and any other change to the environment due to the waste management unit. During the May 2017 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 facility consists of 14 wells and two gravity groundwater intercept outfalls. Available monitoring well construction information for all site monitoring wells is summarized on Table 3, and the well locations are shown on Drawing 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. One upstream surface water monitoring point (SW-1) 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 - 10 feet (plus or minus) under normal conditions. The range in fluctuation appears to be greatest in the upgradient background wells, MW-102A and MW-103A, which are located in a groundwater recharge area. The range in fluctuation in the downgradient compliance wells, which are located near groundwater discharge areas, is less, presumably due to the stabilizing effect of the hydraulic discharge boundary. July 2017 5 073-9603717 2.3 May 2017 Monitoring Event Personnel from Golder visited the facility on May 8 – 10, 2017, to purge and sample monitoring wells, to sample the gravity groundwater intercepts, surface water monitoring points, and the facility’s leachate collection system. Depth-to-water measurements were obtained from the network monitoring wells to the nearest 0.01 foot using an electronic water level indicator prior to purging the wells. The respective groundwater level elevations for this event are presented in Table 1. The historical groundwater level elevation data are also shown on this table. Monitoring wells were purged and sampled using the dedicated pumps at the facility following low-flow micropurge procedures. MW-102A was purged dry and then sampled the following day using a disposable bailer as the water level was too low to utilize the dedicated pump. Measurements of temperature, pH, specific conductivity, turbidity, dissolved oxygen, and oxidation reduction potential were recorded on approximately 3-minute intervals, depending on the purge rate. In general, the purge rate for each well was matched to the yield of the monitoring well, as determined by continuously monitoring the depth to the water, up to a maximum purge rate of 500 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 Grundfos®, bladder pump’s discharge lines, or bailer in the labeled, laboratory-supplied, pre-preserved sample containers after purging was completed based on stabilization of all water quality parameters. After collection, the samples were placed in a cooler on ice, under chain-of-custody control. Copies of the sampling logs are presented in Appendix A. Included in each log is a description of the sampling equipment, sampling method and location, field observations, and water quality measurements. The surface water samples were collected directly from the stream, by lowering the sample containers into the stream flow with the opening facing away from the current flow, taking care to prevent the overflow of the sample containers and to minimize sample-induced turbidity. Measurements of temperature, pH, specific conductivity, turbidity, dissolved oxygen, and oxygen reduction potential were measured directly from the stream and recorded during the collection of the surface water samples. The leachate sample was collected directly from the leachate piping manifold in the area that serves as secondary containment for the leachate transportation vehicles. Measurements of temperature, pH, specific conductivity, and turbidity were recorded during the collection of the leachate sample. July 2017 6 073-9603717 After collection, the surface water and leachate 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 June 2017 Verification Groundwater Monitoring Event Golder personnel visited the facility on June 23, 2017, to re-sample MW-106 at the MSW landfill to verify the toluene concentration observed during the May 2017 event. Additionally, surface water point SW-4 was re-sampled to verify the copper, lead and zinc concentrations observed during the May 2017 event. Samples were collected utilizing techniques as those described above. After collection, the samples were placed in a cooler on ice, under chain-of-custody control. A copy of the sampling logs are included in Appendix A. Included on the logs is a description of the sampling equipment, sampling method, field observations, location, and water quality measurements. 2.5 Laboratory Analysis Program The May and June 2017 groundwater, surface water, and leachate samples were submitted to Environmental Conservation Laboratories, Inc. (ENCO) of Cary, North Carolina under chain-of-custody control for analysis. As presented, groundwater, surface water, and leachate samples at the facility were analyzed for NC Appendix I constituents, with the exception of MW-100B which is only analyzed for the NC Appendix I list of inorganic constituents. Samples from C&D wells MW-1N, MW-2N, MW-3N, MW-4N, MW-5AN, and MW-5BN were also analyzed for other required parameters for C&D landfills, as specified in Title 15A NCAC 13B.0544, including tetrahydrofuran. The leachate sample was also analyzed for the other required leachate parameters. The samples were received at the laboratory in good condition and were properly preserved. The verification samples were analyzed as follows: toluene for MW-106 and copper, lead and zinc for SW-4. 2.6 May 2017 Sampling Results Analytical results for the May 2017 groundwater, surface water, and leachate samples are summarized in Tables 4, 5, 6, 7, 8, 9, and 10 along with available historical data. The laboratory certificates-of-analysis, chain-of-custody form, and laboratory data reviews for the sampling event are included in Appendix B. As presented, five inorganic constituents (beryllium, chromium, cobalt, nickel, and zinc) were detected at concentrations above their respective Solid Waste Section Limits (SWSLs) in samples from one or more downgradient compliance monitoring points at the active MSW landfill during the May 2017 monitoring event. One organic constituent (toluene) was also detected at MW-106. At the C&D facility, six NC Appendix I inorganic constituents (barium, chromium, cobalt, copper, vanadium, and zinc) were reported at concentrations greater than their respective SWSLs in samples from one or more downgradient monitoring wells during the May 2017 monitoring event. Additionally, several indicator parameters July 2017 7 073-9603717 including iron and manganese were also reported at concentrations above SWSLs in samples from downgradient monitoring wells during the May 2017 event. No other NC appendix I constituents were detected above the SWSLs during this event. Chromium, copper, lead, and zinc were detected at downstream monitoring point SW-4 during this event at concentrations above their respective SWSLs and applicable surface water standards. No other NC Appendix I constituents were detected above the SWSLs at surface water monitoring points during this event. Leachate results were consistent with historical data for this facility. 2.7 June 2017 Verification Sampling Results As presented, toluene for MW-106 was not confirmed during the June 2017 verification event as it was non-detect. Zinc was the only NC Appendix I metal detected above the SWSLs during the verification event for SW-4 but at a significantly lower concentration than originally reported. The laboratory certificates-of-analysis, chain-of-custody form, and laboratory data reviews for the sampling event are included in Appendix B. 3.0 LABORATORY AND FIELD QA/QC A field blank was collected by Golder personnel as part of the May 2017 groundwater sampling and June 2017 verification sampling events. In addition to the field blank, a laboratory-prepared trip blank accompanied the volatile sample containers to and from the laboratory. ENCO analyzed the field blank for NC Appendix I constituents and the trip blank for NC Appendix I volatile organic compounds. Reviews of the laboratory data were performed by Golder personnel and are included in Appendix B. Copper was detected in the field blank at estimated concentrations during this event. The following copper concentrations are considered blank-qualified: MW-100B, MW-102A, MW-103A, MW-106, MW-107S, MW-108, GGI Outfall 1 MW-4N, MW-5AN, and SW-5. Acetone was detected in the trip blank. The acetone concentration in MW-103A is considered blank-qualified and suspect. 4.0 DATA EVALUATION The results of the data evaluations are presented in the following sections. 4.1 North Carolina Groundwater and Surface Water Standard Comparisons At the MSW facility, the concentrations of chromium and cobalt were above the established groundwater standards at one or more downgradient wells as reported in the 14-day notification dated July 19, 2017. Estimated concentrations of cobalt and vanadium are above their respective groundwater standards but below the SWSLs in samples from one or more downgradient monitoring points at the MSW facility; no further action is warranted for these estimated concentrations. No other NC Appendix I constituents were reported above applicable groundwater standards at the active MSW facility during this event. July 2017 8 073-9603717 At the C&D facility, chromium, cobalt, iron, manganese, and vanadium were reported at quantifiable concentrations above their respective groundwater standards and SWSLs in the samples collected from one or more downgradient wells during this event. The dissolved concentration of vanadium for MW-4AN was non-detect; the total vanadium concentration is interpreted to be biased high by entrained sediment as evidenced by relatively high field turbidity values. Well re-development is recommended for this well prior to the next compliance monitoring event. Cobalt and vanadium were reported at estimated concentrations below the SWSLs, but above their respective groundwater standards in samples from one or more downgradient monitoring points during this event; no further action is required because concentrations are estimated and consistent with historical data. No other NC Appendix I constituents were reported above applicable groundwater standards at the C&D facility during this event. Copper, lead, and zinc were detected at concentrations above their respective surface water standards in downstream monitoring point SW-4 during the May 2017 event. During the verification event, copper was detected at an estimated concentration below the SWSL above the freshwater acute standard and below the chronic standard at SW-4 and dissolved copper concentrations are below the SWSL and applicable standards. Also, the lead concentration at SW-4 was below the SWSL and estimated above the freshwater chronic standard; dissolved lead was non-detect. During the verification event, the total zinc concentration was above the applicable standards at SW-4 but the dissolved zinc concentration was below the standards. Heavy rains preceding the sampling events may be biasing metals results high. Future results will be evaluated to determine trends and in the interim, erosion and sediment control measures will be re-evaluated in the vicinity of this sampling point. No other NC Appendix I constituents were reported above applicable surface water standards from surface water points during the May 2017 event. 4.2 Additional Evaluations As described in the ASD (submitted under separate cover), above-standard metals concentrations in samples from downgradient monitoring points are assumed to be naturally occurring, and are likely exacerbated by the low (i.e. 2 – 6 specific units) pH values common at the site in groundwater samples from both upgradient and downgradient locations. Alternate groundwater protection standards are also submitted as part of the ASDs as allowed under NCAC Subchapter 15A NCAC 13B.1632(g). 5.0 CONCLUSIONS The above-standard concentrations of several Appendix I inorganic constituents at several downgradient wells at both the MSW and C&D Landfills appear to be naturally occurring based on information presented in the July 19, 2017 14-day notification/ASD. Future results for SW-4 will continue to be monitored and erosion and sediment control measures will be evaluated in the borrow area associated with active cell construction in the vicinity of this sampling point and improved if necessary. We recommend that MW-4N be re-developed prior to the next scheduled compliance monitoring event based on relatively high field turbidity values, which are biasing metals results high at this location. Based on July 2017 9 073-9603717 the results summarized herein, Sampson County Disposal, LLC will continue monitoring the uppermost aquifer beneath this facility in accordance with the requirements of the Detection Monitoring Program as outlined in Title 15A NCAC 13B.1633 and .0544. The next sampling event is tentatively scheduled for November 2017. 6.0 REFERENCES GNRA (G.N. Richardson & Associates, Inc.), Raleigh, NC, December 2006, Water Quality and Leachate Monitoring Report-May 2006 Semi-annual Monitoring Event. GNRA (G.N. Richardson & Associates, Inc.), Raleigh, NC, July 2006, Water Quality and Leachate Monitoring Report-May 2006 Semi-annual Monitoring Event. GNRA (G.N. Richardson & Associates, Inc.), Raleigh, NC, December 1999, Water Quality and Leachate Monitoring Report-May 1999 Semi-annual Monitoring Event. GNRA (G.N. Richardson & Associates, Inc.), Raleigh, NC, May 2000, Water Quality Monitoring Plan, Permit Area 82-02 MSW Landfill Phase 2. GNRA (G.N. Richardson & Associates, Inc.), Raleigh, NC, September 2004, Revised July 2005, Water Quality Monitoring Report-Sampson County Landfill-NPE Landfills. NCGS (North Carolina Geologic Survey), 1985, Geologic Map of North Carolina. NCGS (North Carolina Geologic Survey), 1960, Geology and Groundwater of Goldsboro Area. S&ME (S&ME, Inc.), Charlotte, NC, August 1992, Site Suitability Update for Sampson County Municipal Solid Waste Landfill. G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\200 DELIV\252 Final Issued\1st SA WQMR\Final Sampson Active 1st Semi-Annual WQMR May 2017.docx TABLES July 2017 Page 1 of 1 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx TOC Elevation (ft AMSL) Date GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW11/5/2002 136.90 12.18 125.76 4.10 124.55 5.00 128.18 10.14 124.72 10.71 123.73 11.46 ------------133.43 15.00 ----128.30 15.11 127.75 11.71 ----121.26 14.155/29/2003 141.83 7.25 126.51 3.35 126.60 2.95 131.37 6.95 127.71 7.72 127.44 7.75 ------------136.48 11.95 ----130.29 13.12 129.04 10.42 ----122.71 12.7011/5/2003 ----------------------------156.32 6.60 155.83 5.87 ------------------------5/25/2004 ------------------------------------------------------------11/23/2004 ------------------------------------------------------------5/16-17/2005 137.55 11.53 126.15 3.71 125.27 4.28 128.85 9.47 125.71 9.72 125.21 9.98 ----151.51 11.41 150.36 11.34 133.09 15.34 ----128.37 15.04 127.84 11.62 ----121.01 14.4011/25/2005 ------------------------------------------------------------5/24/2006 ------------------------------------------------------------11/20/2006 ----------------128.03 7.40 127.07 8.12 ----154.78 8.14 153.56 8.14 133.63 14.80 ----128.54 14.87 128.83 10.63 ----121.64 13.775/21-22/2007 138.93 10.15 126.15 3.71 125.20 4.35 129.01 9.31 126.13 9.30 125.57 9.62 ----153.68 9.24 152.89 8.81 132.47 15.96 125.38 7.14 128.08 15.33 127.96 11.50 ----121.16 14.2511/12-15/2007 136.00 13.08 125.14 4.72 123.72 5.83 127.34 10.98 124.41 11.02 124.01 11.18 ----146.87 16.05 146.21 15.49 131.92 16.51 124.82 7.70 127.74 15.67 127.03 12.43 126.62 12.73 121.19 14.225/27-29/2008 139.04 10.04 125.69 4.17 125.75 3.80 128.87 9.45 126.04 9.39 125.48 9.71 ----152.14 10.78 151.42 10.28 132.67 15.76 125.18 7.34 128.14 15.27 127.41 12.05 126.79 12.56 121.26 14.1511/17-20/2008 140.02 9.06 126.38 3.48 126.19 3.36 130.07 8.25 127.36 8.07 126.47 8.72 ----151.47 11.45 150.78 10.92 132.00 16.43 125.87 6.65 127.79 15.62 127.95 11.51 127.43 11.92 122.10 13.315/26-27/2009 139.04 10.04 125.82 4.04 125.50 4.05 128.71 9.61 126.42 9.01 125.61 9.58 ----150.01 12.91 149.75 11.95 131.87 16.56 125.27 7.25 127.32 16.09 127.11 12.35 126.31 13.04 121.19 14.2211/9-11/2009 135.98 13.10 125.20 4.66 124.02 5.53 127.53 10.79 124.76 10.67 124.22 10.97 ----146.26 16.66 145.98 15.72 130.43 18.00 124.82 7.70 126.11 17.30 125.06 14.40 125.27 14.08 120.26 15.155/24-26/2010 140.21 8.87 126.38 3.48 126.33 3.22 130.92 7.40 128.93 6.50 127.23 7.96 --18.14 150.71 12.21 152.33 9.37 132.11 16.32 125.84 6.68 127.31 16.10 127.44 12.02 127.03 12.32 122.54 12.8711/15-17/2010 138.31 10.77 125.80 4.06 125.47 4.08 128.97 9.35 126.15 9.28 125.53 9.66 --21.81 149.92 13.00 149.22 12.48 131.75 16.68 125.02 7.50 126.59 16.82 125.51 13.95 125.31 14.04 120.57 14.845/9-11/2011 136.08 13.00 125.87 3.99 124.99 4.56 128.47 9.85 125.57 9.86 124.94 10.25 --20.60 147.63 15.29 146.92 14.78 131.18 17.25 125.10 7.42 126.20 17.21 125.55 13.91 124.96 14.39 120.71 14.7011/14/2011 135.53 13.55 125.71 4.15 124.15 5.40 127.48 10.84 124.23 11.20 124.18 11.01 --22.20 145.66 17.26 145.24 16.46 130.21 18.22 125.04 7.48 125.28 18.13 124.99 14.47 124.75 14.60 120.01 15.405/7/2012 135.08 14.00 125.72 4.14 124.22 5.33 126.52 11.80 124.12 11.31 123.69 11.50 137.88 23.80 145.77 17.15 145.25 16.45 127.93 20.50 125.05 7.47 125.31 18.10 <121.81 --124.35 15.00 120.09 15.3211/5/2012 134.32 14.76 125.08 4.78 122.74 6.81 125.63 12.69 122.60 12.83 122.47 12.72 137.40 24.28 145.20 17.72 144.72 16.98 129.59 18.84 124.54 7.98 124.77 18.64 123.71 15.75 123.56 15.79 118.80 16.615/13/2013 134.53 14.55 125.80 4.06 124.30 5.25 127.42 10.90 124.10 11.33 123.63 11.56 137.27 24.41 144.64 18.28 144.52 17.18 130.81 17.62 125.03 7.49 125.27 18.14 125.30 14.16 124.76 14.59 119.89 15.5211/11/2013 135.74 13.34 125.65 4.21 124.28 5.27 127.05 11.27 123.71 11.72 123.61 11.58 138.36 23.32 146.05 16.87 145.59 16.11 130.41 18.02 124.79 7.73 124.91 18.50 123.71 15.75 123.37 15.98 118.79 16.625/12-13/2014 137.34 11.74 126.05 3.81 125.44 4.11 128.63 9.69 125.53 9.90 125.02 10.17 139.62 22.06 146.31 16.61 147.60 14.10 132.37 16.06 125.19 7.33 126.53 16.88 125.36 14.10 124.94 14.41 120.09 15.3211/17-19/2014 135.33 13.75 125.51 4.35 123.50 6.05 126.62 11.70 123.48 11.95 123.79 11.40 138.08 23.60 143.63 19.29 144.75 16.95 130.13 18.30 124.47 8.05 124.91 18.50 123.86 15.60 123.50 15.85 118.62 16.795/12/2015 138.35 10.73 126.64 3.22 126.48 3.07 130.30 8.02 128.06 7.37 126.54 8.65 139.96 21.72 147.46 15.46 148.97 12.73 133.50 14.93 125.74 6.78 126.96 16.45 126.84 12.62 126.13 13.22 121.76 13.6511/9/2015 137.66 11.42 126.66 3.20 126.40 3.15 129.49 8.83 126.83 8.60 125.92 9.27 139.10 22.58 146.04 16.88 147.65 14.05 133.48 14.95 125.64 6.88 125.81 17.60 126.69 12.77 126.14 13.21 121.14 14.275/10/2016 138.95 10.13 126.23 3.63 125.62 3.93 129.48 8.84 126.70 8.73 125.95 9.24 140.54 21.14 146.13 16.79 147.28 14.42 131.44 16.99 125.43 7.09 126.39 17.02 125.51 13.95 125.15 14.20 120.10 15.3111/7/2016 141.39 7.69 126.38 3.48 126.19 3.36 129.45 8.87 126.70 8.73 126.17 9.02 140.67 21.01 147.81 15.11 150.11 11.59 132.92 15.51 125.40 7.12 126.49 16.92 124.90 14.56 124.39 14.96 119.39 16.025/8/2017 138.10 10.98 126.27 3.59 125.66 3.89 129.11 9.21 126.51 8.92 125.62 9.57 139.13 22.55 143.44 19.48 145.37 16.33 131.82 16.61 125.41 7.11 125.69 17.72 125.44 14.02 125.10 14.25 120.19 15.226/23/2017 --------------------------------------------125.13 18.28 ------------MEAN 137.59 11.49 125.94 3.92 125.11 4.44 128.56 9.76 125.78 9.65 125.16 10.03 138.91 22.21 148.31 14.61 148.43 13.27 131.91 16.52 125.19 7.33 126.70 16.71 126.28 13.18 125.29 14.06 120.66 14.75MAXIMUM141.83 14.76 126.66 4.78 126.60 6.81 131.37 12.69 128.93 12.83 127.44 12.72 140.67 24.41 156.32 19.48 155.83 17.18 136.48 20.50 125.87 8.05 130.29 18.64 129.04 15.75 127.43 15.98 122.71 16.79MINIMUM134.32 7.25 125.08 3.20 122.74 2.95 125.63 6.95 122.60 6.50 122.47 7.75 137.27 18.14 143.44 6.60 144.52 5.87 127.93 11.95 124.47 6.65 124.77 13.12 <121.81 10.42 123.37 11.92 118.62 12.70 Notes:1. GW Elev = Groundwater elevation in feet above mean sea level (AMSL) 2. DTW = Depth to Water (measured in feet below top of casing) 3. -- = no data available4. TOC = top of casing5. MW = monitoring well6. TOC and Water Elevation Data for dates prior to May 2007 from available historical G.N. Richardson & Associates, Inc. Semi-Annual Monitoring Event Reports and S&ME historical reports. 6. Top of casing elevation for MW-100B was modified and re-surveyed in May 2012. Monitoring Well 149.08 135.41132.52 143.41 139.46 139.35135.19135.43138.32129.55129.86 161.68 148.43161.70162.92 MW-3NMW-2N MW-108MW-100BMW-5BN TABLE 1 Summary of Historical Groundwater Elevation DataSampson County Active MSW/C&D Landfill, Permit No. 82-02Sampson County, North Carolina MW-1N MW-107DMW-107SMW-106MW-105AMW-104MW-103AMW-102AMW-5ANMW-4N July 2017 Page 1 of 1 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Gradient Calculation Segment Flow Direction Gradient Segment Length (feet) Hydraulic Conductivity (K, feet/year) Horizontal Gradient (i, feet) Effective Porosity (ne) Hydraulic Conductivity (K, cm/sec) Velocity (Vgw, feet/year) 145 125140120 135 130 Notes: 1. Horizontal velocities based on the modified Darcy equation Vgw = Ki/ne.2. Values for K and ne were based on mean values for MW-104, MW-106, MW-107S, MW-107D and MW-108 referenced in the December 1999 G.N. Richardson and Associates, Inc. Water Quality and Leachate Monitoring Report . TABLE 2 Summary of Estimated Horizontal Flow Velocities May 2017 i1 4159 0.25 257.700.012950.0048ENE Sampson County Active MSW/C&D Landfill, Permit No. 82-02 Sampson County, North Carolina ENE NE i 2 i 3 401.11 575.80 0.25 0.25 0.01295 0.01295 2672 465 0.0075 0.0107 July 2017 Page 1 of 1 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-100B 446881.50 2161983.42 4/14/2010 157.27 160.30 35 2 25-35 132.27-122.27 Sand/Silt Active MW-102A 448225.98 2159230.55 9/15/2003 --162.92 20 2 5-20 157.92-142.92 Sand/Clay Active MW-103A 447029.28 2159719.61 9/16/2003 --161.70 20 2 5-20 156.70-141.70 Clay Active MW-104 449816.45 2162418.65 ----148.43 20 2 10-20 138.43-128.43 --Active MW-105A 448119.79 2163946.35 1/30/2007 129.89 132.52 20 2 8-18 121.89-111.89 Sandy/Clay Active MW-106 449849.25 2163520.87 11/1/1999 --143.41 20 2 5-20 138.41-123.41 --Active MW-107S 449277.51 2163653.85 11/1/1999 --139.46 17 2 5-15 134.46-124.46 --Active MW-107D 449322.35 2163623.42 11/1/1999 --139.35 30 2 15-25 124.35-114.35 --Water Levels MW-108 448660.92 2164058.43 10/29/1999 --135.41 25 2 15-25 120.41-110.41 --Active MW-1N 446776.69 2163484.24 7/25/1996 148.08 149.08 23 2 7.1-22.1 140.98-125.98 --Active (C&D) MW-2N 447798.67 2163861.27 7/26/1996 130.14 129.86 19.5 2 3-18 127.14-112.14 --Active (C&D) MW-3N 447777.94 2164462.97 7/24/1996 128.36 129.55 22.65 2 6-21 122.36-107.36 --Active (C&D) MW-4N 447010.66 2164647.47 7/26/2000 135.49 138.32 20 2 5-20 130.49-115.49 Sand Active (C&D) MW-5AN 446449.12 2164831.01 7/26/2000 132.41 135.43 20 2 5-20 127.41-112.41 Sand Active (C&D) MW-5BN 446434.33 2164844.62 7/26/2000 132.71 135.19 23 2 35-45 97.71-87.71 Sand Active (C&D) Notes:1. ft AMSL= feet above mean sea level 2. ft BGS= feet below ground surface 3. -- = no data available 4. Well depths based on field measurements taken during the May 2007 monitoring event for MW-104 and MW-108. 5. Well depths for all other wells based on well construction information provided by G.N. Richardson & Associates, Inc. 6. Top of casing elevation for MW-100B was modified and re-surveyed in May 2012. TABLE 3 Summary of Well Construction Information Sampson County Active MSW/C&D Landfill, Permit No. 82-02 Sampson County, North Carolina Well Identification Construction Date Well Status Screened Interval (ft AMSL) Ground Surface Elevation (ft AMSL) Top of Casing Elevation (ft AMSL) Well Depth (feet) Well Diameter (inches) Screened Interval (ft bgs) Geology of Screened IntervalNorthingEasting July 2017 Page 1 of 8 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Antimony ug/L 01/11/00 --10 14 --------ND --ND ND ND ------ SWS GPS = 1 ug/L ug/L 02/21/00 --10 ND ------------------------EPA MCL = 6 ug/L ug/L 02/22/00 --10 ----------------ND ND ------ug/L 10/10/00 --30 ND --------ND --ND ND ND ------ug/L 07/12/01 --30 ND --------ND --ND ND ND ------ ug/L 10/24/01 --30 ND --------ND --ND ----------ug/L 05/28/02 --30 ND --------ND --ND ----------ug/L 11/05/02 --30 ND --------ND --ND ---------- ug/L 05/29/03 --30 ND --------ND --ND ----------ug/L 11/05/03 --30 ------ND ND ----------------ug/L 05/25/04 --30 ND ----ND ND ND --ND ----------ug/L 11/23/04 --30 ND ----ND ND ND --ND ND ND ------ ug/L 05/16/05 --30 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --30 ------ND ND ND --ND ND ND ------ug/L 05/24/06 --30 ------ND ND ND --ND ND ND ----ND ug/L 11/20/06 --30 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --6 --ND --ND ND ND ND ND ND ND ----NDug/L 11/13/07 --6 --ND --ND ND ND ND ND ND ND ----NDug/L 05/29/08 --6 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/17/08 --6 --ND --ND ND ND ND ND ND ND ----NDug/L 05/26/09 --6 --ND --ND ND ND ND ND ND ND ----NDug/L 11/10/09 --6 --ND --ND 0.104 B 0.181 B ND ND ND 0.142 B ----0.0770 J ug/L 05/26/10 --6 ----ND ND ND 0.360 J ND ND ND ND ----ND ug/L 11/15/10 --6 ----ND ND ND 0.309 J ND ND ND ND ----NDug/L 05/09/11 --6 ----ND ND ND ND ND ND ND ND ----NDug/L 11/14/11 --6 ----ND ND ND ND ND ND ND ND ----ND ug/L 05/07/12 --6 ----0.270 J ND 0.814 J ND ND ND Dry 0.290 J ----NDug/L 11/05/12 --6 ----ND ND 0.612 J ND ND ND ND ND ND ND NDug/L 05/13/13 --6 ----ND ND 0.358 J ND ND ND ND ND ND ND NDug/L 11/11/13 --6 ----0.427 J ND ND ND ND ND ND ND ND ND ND ug/L 05/12/14 --6 ----0.253 J ND ND ND ND ND 0.253 J ND ND ND NDug/L 11/17/14 0.220 6 ----0.415 J 0.232 J 0.695 J ND ND ND ND ND 0.380 J ND NDug/L 05/12/15 0.220 6 ----ND ND 0.848 J ND ND ND 0.650 J ND 3.21 J 0.291 J ND ug/L 11/09/15 0.220 6 ----ND ND 0.868 J ND ND ND ND ND 6.84 ND NDug/L 05/10/16 0.220 6 ----ND 0.306 J 0.272 J 0.505 J ND ND 0.363 J 2.84 J 0.809 J ND NDug/L 11/07/16 0.220 6 ----ND ND 0.804 J ND ND ND ND ND ND ND NDug/L 05/09/17 0.220 6 ----ND ND ND ND ND ND ND ND ND ND ND Arsenic ug/L 01/11/00 --5 7.2 --------10.1 --8.04 ND ND ------NC 2L = 10 ug/L ug/L 02/21/00 --5 ND ------------------------EPA MCL = 10 ug/L ug/L 02/22/00 --5 ----------------ND ND ------ ug/L 10/10/00 --10 ND --------ND --ND ND ND ------ug/L 07/12/01 --10 ND --------ND --ND ND ND ------ug/L 10/24/01 --10 ND --------ND --ND --ND ------ug/L 05/28/02 --10 ND --------ND --ND --ND ------ ug/L 11/05/02 --10 ND --------ND --ND ND ND ------ug/L 05/29/03 --10 ND --------ND --ND ND ND ------ug/L 11/05/03 --10 ------ND ND ---------------- ug/L 05/25/04 --10 ND ----ND ND ND --ND ND ND ------ ug/L 11/23/04 --10 ND ----ND ND ND --ND ND ND ------ug/L 05/16/05 --10 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --10 ------ND ND ND --ND ND ND ------ ug/L 05/24/06 --10 ------ND ND ND --ND ND ND ----NDug/L 11/20/06 --10 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --10 --ND --ND ND 2.6 B ND ND 3.6 B ND ----2.2 Jug/L 11/13/07 --10 --5.7 B --3.3 B 2.4 B 6.2 B 2.0 B 4.6 B 5.0 B 4.1 B ----2.4 J ug/L 05/29/08 --10 --ND --2.3 B ND 12.1 B 4.6 B ND 2.0 B ND ----3.2 Jug/L 11/17/08 --10 --ND --ND 2.8 J 6.5 J ND ND 5.4 J ND ----NDug/L 05/26/09 --10 --ND --ND ND 8.7 J ND ND 8.7 J 4.1 J ----ND ug/L 11/10/09 --10 --4.02 J --ND ND 15.3 ND ND 17.3 4.01 J ----NDug/L 01/18/10 --10 ----------------21.7 ------NDug/L 05/26/10 --10 ----ND ND ND 11.5 ND ND 12.4 4.31 J ----NDug/L 11/15/10 --10 ----ND ND ND 10.8 B ND ND 17.5 B 3.04 B ----3.98 J ug/L 05/09/11 --10 ----ND ND ND ND ND ND 16.7 8.31 J ----NDug/L 11/14/11 --10 ----ND ND 3.14 J 9.14 J 3.71 J ND 19.5 6.37 J ----NDug/L 01/17/12 --10 -------------------------- (Dissolved)ug/L 01/17/12 --10 --------------------------ug/L 05/07/12 --10 ----ND ND ND 3.10 J ND ND Dry 3.32 J ----NDug/L 11/05/12 --10 ----ND 3.27 B ND 6.67 B ND 3.70 B 29.7 4.32 B 5.25 B ND 4.48 J('Verification Event)ug/L 01/10/13 --10 ----------------5.80 J ------ND ug/L 05/13/13 --10 ----ND ND ND 6.93 J ND ND ND ND ND ND NDug/L 11/11/13 --10 ----ND ND 5.54 J 7.39 J ND 5.88 J 17.6 ND ND ND NDug/L 05/12/14 --10 ----ND ND ND ND ND 5.56 J ND ND ND ND ND ug/L 11/17/14 5.40 10 ----ND ND ND ND ND ND ND ND ND ND ND ug/L 05/12/15 5.40 10 ----ND ND ND ND ND ND ND ND ND ND NDug/L 11/09/15 5.40 10 ----ND ND ND ND ND ND ND ND ND ND NDug/L 05/10/16 5.40 10 ----ND ND ND ND ND ND ND ND ND ND ND ug/L 11/07/16 6.80 10 ----ND ND ND ND ND ND 16.2 ND ND ND NDug/L 05/09/17 6.80 10 ----ND ND ND ND ND ND ND ND ND ND NDBariumug/L 01/11/00 ----52.7 --------34.1 --17.8 28 17.5 ------NC 2L = 700 ug/L ug/L 02/21/00 ----65.4 ------------------------ EPA MCL = 2000 ug/L ug/L 02/22/00 --------------------30.4 14.7 ------ug/L 10/10/00 --500 ND --------ND --ND ND ND ------ug/L 07/12/01 --500 ND --------ND --ND ND ND ------ ug/L 10/24/01 --500 ND --------ND --ND --ND ------ug/L 05/28/02 --500 ND --------ND --ND --ND ------ug/L 11/05/02 --500 ND --------ND --ND ND ND ------ug/L 05/29/03 --500 ND --------ND --ND ND ND ------ ug/L 11/05/03 --500 ------ND ND ----------------ug/L 05/25/04 --500 ND ----ND ND ND --ND ND ND ------ug/L 11/23/04 --500 ND ----ND ND ND --ND ND ND ------ ug/L 05/16/05 --500 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --500 ------ND ND ND --ND ND ND ------ug/L 05/24/06 --500 ------ND ND ND --ND ND ND ----NDug/L 11/20/06 --500 ------ND ND ND --ND ND ND ----ND ug/L 05/22/07 --100 --146 --25 J 8.0 J 67.5 J 16.2 J 11.7 J 59.6 J 34 J ----0.3 Jug/L 11/13/07 --100 --158 --8.50 J 9.00 J 77.5 J 17.0 J 32.4 J 42.6 J 66.5 J ----0.2 Jug/L 05/29/08 --100 --140 --25.7 J 7.50 J 56.4 J 21.8 J 17.7 J 46.0 J 82.9 J ----0.60 J ug/L 11/17/08 --100 --126 --11.1 J 10.2 J 75.3 J 37.8 J 30.9 J 52.2 J 85.2 J ----ND ug/L 05/26/09 --100 --143 --7.72 J 16.8 J 72.7 J 26.8 J 26.7 J 46.7 J 62.2 J ----NDug/L 11/10/09 --100 --116 --11.6 J 14.8 J 71.4 J 27.6 J 34.7 J 41.8 J 51.1 J ----NDug/L 05/26/10 --100 ----112 7.64 J 7.61 J 92.2 J 41.4 J 13.4 J 73.2 J 39.0 J ----ND ug/L 11/15/10 --100 ----78.6 J 10.6 J 9.14 J 76.4 J 41.0 J 30.0 J 42.5 J 41.6 J ----NDug/L 05/09/11 --100 ----173 8.18 J 9.80 J 119 44.7 J 29.2 J 34.6 J 44.2 J ----NDug/L 11/14/11 --100 ----185 7.25 J 10.5 J 226 38.8 J 29.1 J 39.9 J 43.9 J ----NDug/L 05/07/12 --100 ----275 10.9 J 10.9 J 107 38.5 J 57.5 J Dry 59.3 J ----ND ug/L 11/05/12 --100 ----206 9.58 J 14.2 J 53.3 J 33.3 J 26.9 J 33.8 J 50.0 J 205 49.8 J NDug/L 05/13/13 --100 ----288 9.63 J 12.8 J 40.2 J 34.8 J 22.2 J 23.9 J 35.7 J 217 78.1 J 1.21 Jug/L 11/11/13 --100 ----462 16.6 J 12.9 J 56.9 J 35.2 J 19.2 J 26.2 J 44.3 J 212 53.2 J 1.22 J ug/L 05/12/14 --100 ----906 15.8 J 9.11 J 30.6 J 37.3 J 29.8 J 24.3 J 54.2 J 247 68.0 J NDug/L 11/17/14 1.00 100 ----368 8.55 J 11.1 J 48.6 J 37.2 J 20.4 J 28.9 J 50.7 J 87.1 J 46.4 J 1.08 Jug/L 05/12/15 1.00 100 ----363 17.6 J 10.0 J 38.4 J 37.2 J 14.2 J 28.5 J 55.3 J 31.5 J 69.2 J NDug/L 11/09/15 1.00 100 ----247 10.8 J 11.0 J 56.7 J 39.8 J 18.7 J 28.2 J 65.7 J 42.9 J 18.9 J ND ug/L 05/10/16 1.00 100 ----672 6.85 J 13.7 J 52.1 J 43.8 J 17.2 J 31.2 J 69.5 J 45.7 J 32.7 J NDug/L 11/07/16 1.00 100 ----545 24.1 J 14.6 J 74.5 J 38.3 J 11.2 J 97.2 J 38.9 J 244 58.5 J NDug/L 05/09/17 1.00 100 ----812 25.3 J 22.7 J 58.0 J 36.9 J 13.7 J 26.7 J 34.9 J 89.7 J 45.4 J ND Beryllium ug/L 01/11/00 --5 ND --------ND --ND ND ND ------SWS GPS = 4 ug/L ug/L 02/21/00 --5 ND ------------------------EPA MCL = 4 ug/L ug/L 02/22/00 --5 ----------------ND ND ------ug/L 10/10/00 --2 ND --------ND --ND ND ND ------ ug/L 07/12/01 --2 ND --------ND --ND ND ND ------ug/L 10/24/01 --2 ND --------ND --ND --ND ------ug/L 05/28/02 --2 ND --------ND --ND --ND ------ ug/L 11/05/02 --2 ND --------ND --ND ND ND ------ ug/L 05/29/03 --2 ND --------ND --ND ND ND ------ug/L 11/05/03 --2 ------ND ND ------ND --------ug/L 05/25/04 --2 ND ----ND ND ND --ND ND ND ------ ug/L 11/23/04 --2 ND ----ND ND ND --ND ND ND ------ug/L 05/16/05 --2 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --2 ------ND ND ND --ND ND ND ------ug/L 05/24/06 --2 ------ND ND ND --ND ND ND ----ND ug/L 11/20/06 --2 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --1 --ND --ND ND ND ND ND 1.5 ND ----NDug/L 11/13/07 --1 --ND --ND ND ND ND ND 1.40 ND ----ND ug/L 05/29/08 --1 --ND --ND ND 0.70 J ND ND 1.00 ND ----NDug/L 11/17/08 --1 --ND --ND ND 0.40 J ND ND 1.60 ND ----NDug/L 05/26/09 --1 --0.14 J --ND 0.10 J 0.74 J ND ND 1.95 0.33 J ----NDug/L 11/10/09 --1 --ND --ND ND 1.07 ND 0.108 J 5.47 0.227 J ----ND ug/L 01/18/10 --1 ----------------4.64 ------0.201 J(Dissolved)ug/L 01/18/10 --1 ----------------3.62 ------0.201 Jug/L 05/26/10 --1 ----ND ND ND 1.11 0.229 J 0.250 J 2.77 0.583 J ----ND ug/L 11/15/10 --1 ----ND ND ND 0.887 B 0.385 B ND 5.16 0.280 B ----0.106 Jug/L 05/09/11 --1 ----ND ND ND 0.185 J 0.104 J 0.227 J 3.63 0.357 J ----NDug/L 11/14/11 --1 ----ND ND ND 0.560 J ND 0.134 J 4.04 0.413 J ----NDug/L 05/07/12 --1 ----ND ND ND 0.538 J ND 0.657 J Dry 0.133 J ----ND ug/L 11/05/12 --1 ----ND ND ND 0.450 J 0.113 J 0.287 J 5.32 0.303 J 0.254 J 0.170 J NDug/L 05/13/13 --1 ----ND ND ND 0.392 J ND ND 0.790 J 0.240 J 0.250 J 0.200 J NDug/L 11/11/13 --1 ----ND ND ND 0.462 J 0.113 J 0.247 J 2.78 0.445 J 0.242 J 0.150 J ND ug/L 05/12/14 --1 ----ND ND ND 0.214 J 0.106 J ND 0.142 J 0.755 J 0.231 J 0.280 J ND ug/L 11/17/14 0.100 1 ----ND ND ND 0.336 J 0.199 J 0.280 J 1.96 0.777 J ND 0.254 J NDug/L 05/12/15 0.100 1 ----ND ND ND ND ND ND ND 0.403 J ND 0.361 J NDug/L 11/09/15 0.100 1 ----ND ND ND 0.159 J ND ND 0.482 J 0.936 J 0.108 J ND ND ug/L 05/10/16 0.100 1 ----ND ND ND 0.104 J ND ND 1.03 1.04 0.691 J ND NDug/L 11/07/16 0.100 1 ----ND ND ND ND ND ND 2.00 0.615 J ND ND NDug/L 05/09/17 0.100 1 ----ND ND ND ND ND ND 1.57 0.646 J 1.33 ND ND MDL MW-107S MW-108 SWSReportingLimit Upgradient TABLE 4 Summary of Groundwater Monitoring Results for MSW Wells Detected Constituents Sampson County Active MSW Landfill, Permit No. 82-02Sampson County, North Carolina Blanks Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 GGI Outfall 2GGI Outfall 1MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date July 2017 Page 2 of 8 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MDL MW-107S MW-108 SWSReportingLimit Upgradient TABLE 4 Summary of Groundwater Monitoring Results for MSW Wells Detected Constituents Sampson County Active MSW Landfill, Permit No. 82-02Sampson County, North Carolina Blanks Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 GGI Outfall 2GGI Outfall 1MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Cadmium ug/L 01/11/00 --5 ND --------ND --6.38 ND ND ------ NC 2L = 2 ug/L ug/L 02/21/00 --5 ND ------------------------EPA MCL = 5 ug/L ug/L 02/22/00 --5 ----------------ND ND ------ug/L 10/10/00 --1 ND --------ND --ND ND ND ------ug/L 07/12/01 --1 ND --------ND --ND ND ND ------ ug/L 10/24/01 --1 ND --------ND --ND --ND ------ug/L 05/28/02 --1 ND --------ND --ND --ND ------ug/L 11/05/02 --1 ND --------ND --ND ND ND ------ ug/L 05/29/03 --1 ND --------ND --ND ND ND ------ug/L 11/05/03 --1 ------ND ND 2 --------------ug/L 05/25/04 --1 ND ----ND ND ND --ND ND ND ------ug/L 11/23/04 --1 5 ----ND ND ND --ND 2 ND ------ ug/L 05/16/05 --1 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --1 ------ND ND ND --ND 2 ND ------ug/L 05/24/06 --1 ------ND ND ND --ND 1 ND ----ND ug/L 11/20/06 --1 ------ND ND ND --ND 4 ND ----NDug/L 05/22/07 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 11/13/07 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 05/29/08 --1 --ND --ND ND ND ND ND ND ND ----0.50 J ug/L 11/17/08 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 05/26/09 --1 --ND --ND 0.23 J 0.39 J 0.09 J 0.75 J 0.84 J 0.18 J ----NDug/L 11/10/09 --1 --ND --ND ND 0.790 J ND ND ND ND ----ND ug/L 05/26/10 --1 ----ND ND ND 1.17 ND ND 1.66 ND ----ND ug/L 11/15/10 --1 ----ND ND ND 0.973 J ND ND 1.56 ND ----NDug/L 05/09/11 --1 ----ND ND ND ND ND ND 1.84 ND ----NDug/L 11/14/11 --1 ----0.490 J ND ND 0.782 J 0.405 J ND 2.81 0.407 J ----ND ug/L 05/07/12 --1 ----ND ND ND 0.701 J ND ND Dry 0.952 J ----NDug/L 11/05/12 --1 ----ND ND ND 0.559 J ND ND 1.68 0.564 J ND ND NDug/L 05/13/13 --1 ----0.424 J 0.384 J ND 0.664 J ND ND 1.73 0.749 J ND ND NDug/L 11/11/13 --1 ----ND ND ND 0.705 J ND ND 1.97 0.608 J ND ND ND ug/L 05/12/14 --1 ----ND ND ND 0.504 J ND ND ND 0.463 J ND ND NDug/L 11/17/14 0.360 1 ----ND ND ND 0.452 J ND ND 1.49 0.381 J ND ND NDug/L 05/12/15 0.360 1 ----ND ND ND ND ND ND ND ND 0.534 J ND ND ug/L 11/09/15 0.360 1 ----ND ND ND ND ND ND ND 0.440 J ND ND NDug/L 05/10/16 0.360 1 ----ND ND ND 0.595 J ND ND 0.910 J 0.622 J ND ND NDug/L 11/07/16 0.360 1 ----ND ND ND ND ND ND 0.836 J ND ND ND NDug/L 05/09/17 0.360 1 ----ND ND ND 0.461 J ND ND 0.575 J ND 0.895 J ND ND Chromium ug/L 01/11/00 --5 ND --------ND --ND ND 5.14 ------NC 2L = 10 ug/L ug/L 02/21/00 --5 ND ------------------------EPA MCL = 100 ug/L ug/L 02/22/00 --5 ----------------ND ND ------ ug/L 10/10/00 --10 ND --------ND --ND ND ND ------ug/L 07/12/01 --10 ND --------ND --ND ND ND ------ug/L 10/24/01 --10 ND --------ND --ND --ND ------ug/L 05/28/02 --10 ND --------65 --ND --ND ------ ug/L 11/05/02 --10 ND --------ND --ND ND ND ------ug/L 05/29/03 --10 ND --------19 --ND ND ND ------ug/L 11/05/03 --10 ------ND ND ----11 ---------- ug/L 05/25/04 --10 ND ----ND ND 14 --23 12 ND ------ ug/L 11/23/04 --10 ND ----77 ND 22 --73 ND ND ------ug/L 05/16/05 --10 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --10 ------ND ND ND --ND 19 ND ------ ug/L 05/24/06 --10 ------ND ND 23 --ND 11 ND ----NDug/L 11/20/06 --10 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --10 --ND --ND 2.3 J ND ND ND ND ND ----NDug/L 11/13/07 --10 --ND --2.0 J ND ND 5.9 J 6.4 J 13.7 ND ----ND ug/L 05/29/08 --10 --ND --ND ND ND 6.8 J ND ND ND ----NDug/L 11/17/08 --10 --ND --2.8 B ND ND 5.8 B ND ND 7.9 B ----4.9 Jug/L 05/26/09 --10 --0.8 J --ND 8.2 J 17.7 3.3 J ND 15.8 1.1 J ----ND ug/L 11/10/09 --10 --1.87 J --7.90 J 3.75 J 6.13 J 2.32 J ND ND 2.21 J ----NDug/L 05/26/10 --10 ----ND ND 2.39 J 6.95 J ND ND 3.51 J 2.31 J ----NDug/L 11/15/10 --10 ----ND 3.63 J 2.08 J 2.52 J 1.07 J ND 1.63 J ND ----NDug/L 05/09/11 --10 ----ND 2.82 J 6.80 J 9.16 J ND ND 6.80 J 3.27 J ----ND ug/L 11/14/11 --10 ----ND 2.67 J 4.26 J 4.21 J ND ND 3.82 J 3.05 J ----NDug/L 05/07/12 --10 ----ND 13.0 3.80 J 3.51 J ND 13.4 Dry 4.53 J ----NDug/L 11/05/12 --10 ----ND 1.36 J 3.78 J 4.36 J 1.29 J 2.46 J 3.62 J 2.42 J ND ND ND ug/L 05/13/13 --10 ----ND 11.4 7.12 J 8.38 J ND 2.71 J 2.63 J 5.10 J ND 1.82 J NDug/L 11/11/13 --10 ----ND 3.61 J 6.33 J 6.79 J 4.41 J 2.75 J 2.97 J 3.01 J 4.62 J 2.15 J NDug/L 05/12/14 --10 ----ND 6.54 J 4.63 J 4.24 J 2.38 J 1.42 J ND 2.99 J ND ND NDug/L 11/17/14 1.40 10 ----ND 5.47 J 3.46 J 4.20 J 1.55 J 2.59 J 2.10 J 3.18 J ND ND ND ug/L 05/12/15 1.40 10 ----1.81 B 12.8 4.88 B 7.62 B 1.91 B 3.26 B 6.12 B 3.02 B 6.75 B 2.10 B 1.82 Jug/L 11/09/15 1.40 10 ----ND 5.90 J 6.37 J 7.80 J ND 3.19 J 4.20 J 2.53 J 13.1 ND NDug/L 05/10/16 1.40 10 ----ND 8.42 J 11.6 4.48 J ND 2.96 J 18.9 7.92 J 2.00 J ND ND ug/L 11/07/16 1.40 10 ----ND 4.11 J 69.7 1.69 J ND 1.85 J 41.8 4.39 J ND 4.39 J ND ug/L 05/09/17 1.40 10 ----ND ND 21.2 2.03 J ND 2.59 J 38.0 2.92 J 5.77 J ND NDCobalt ug/L 01/11/00 --5 5.52 --------ND --ND ND ND ------SWS GPS = 1 ug/L ug/L 02/21/00 --5 ND ------------------------ EPA MCL = 100 ug/L ug/L 02/22/00 --5 ----------------ND ND ------ug/L 10/10/00 --10 ND --------ND --ND 39 ND ------ug/L 07/12/01 --10 ND --------ND --ND 54 ND ------ug/L 10/24/01 --10 ND --------ND --ND --ND ------ ug/L 05/28/02 --10 ND --------ND --ND --ND ------ug/L 11/05/02 --10 ND --------ND --ND ND ND ------ug/L 05/29/03 --10 ND --------14 --ND 19 ND ------ ug/L 11/05/03 --10 ------ND ND 22 ----47 --------ug/L 05/25/04 --10 ND ----ND ND 20 --ND 104 ND ------ug/L 11/23/04 --10 ND ----ND ND 14 --ND 117 ND ------ug/L 05/16/05 --10 ------ND ND ND --10 ND ND ------ ug/L 11/25/05 --10 ------ND ND ND --ND 35 ND ------ug/L 05/24/06 --10 ------ND ND ND --ND 32 ND ----NDug/L 11/20/06 --10 ------ND ND ND --ND 29 ND ----ND ug/L 05/22/07 --10 --ND --ND ND 20.2 ND ND 75 2.8 J ----NDug/L 11/13/07 --10 --ND --ND ND 11.1 3.0 J ND 34.2 7.8 J ----NDug/L 05/29/08 --10 --ND --ND ND 58.4 3.9 J ND 23.5 27.7 ----NDug/L 11/17/08 --10 --ND --ND ND 21.6 5.9 J 1.1 J 68.0 7.2 J ----ND ug/L 05/26/09 --10 --1.8 J --ND 0.8 J 35.3 2.4 J ND 59.4 11.4 ----NDug/L 11/10/09 --10 --1.75 J --ND ND 39.0 3.94 J ND 121 6.78 J ----NDug/L 05/26/10 --10 ----ND ND ND 67.8 2.79 J ND 102 14.1 ----ND ug/L 11/15/10 --10 ----ND ND ND 46.2 9.38 J 1.62 J 132 28.7 ----ND ug/L 12/21/10 --10 ------------------45.5 ----NDug/L 05/09/11 --10 ----1.51 J ND ND 4.21 J 2.50 J 1.23 J 105 48.2 ----NDug/L 11/14/11 --10 ----2.43 J 1.12 J 1.39 J 16.1 2.76 J 2.02 J 103 38.2 ----ND ug/L 01/17/12 --10 --------------------------(Dissolved)ug/L 01/17/12 --10 --------------------------ug/L 05/07/12 --10 ----1.15 J ND ND 9.55 J 1.72 J 10.0 Dry 23.6 ----ND(Verification Event)ug/L 07/11/12 --10 -------------------------- (Dissolved)ug/L 07/11/12 --10 --------------------------ug/L 11/05/12 --10 ----1.66 J 1.22 J 2.18 J 12.4 2.75 J 2.28 J 139 27.5 3.48 J 3.49 J NDug/L 05/13/13 --10 ----ND ND 1.93 J 8.59 J 1.61 J 2.57 J 31.8 20.9 3.32 J 5.94 J ND ug/L 11/11/13 --10 ----ND ND 1.60 J 19.3 3.41 J 2.41 J 100 36.0 3.50 J 3.48 J NDug/L 05/12/14 --10 ----ND ND ND 8.49 J 2.54 J 1.15 J 4.59 J 38.4 2.93 J 6.21 J NDug/L 11/17/14 1.10 10 ----ND ND 1.16 J 11.7 3.97 J 1.74 J 76.0 22.3 ND 3.22 J NDug/L 05/12/15 1.10 10 ----1.23 J 1.25 J 2.18 J 6.07 J 2.33 J 1.36 J 3.48 J 11.8 6.87 J 10.2 ND ug/L 11/09/15 1.10 10 ----1.30 J ND ND 6.23 J 3.55 J 1.13 J 14.8 20.9 12.3 1.70 J ND(Verification Event)ug/L 12/30/15 1.10 10 --------------------16.7 --ND(Dissolved)ug/L 12/30/15 1.10 10 --------------------15.2 --ND ug/L 05/10/16 1.10 10 ----3.43 J ND 1.17 J 12.2 2.60 J 1.62 J 64.7 31.8 40.4 1.79 J NDug/L 07/07/16 1.10 10 --------------------3.41 J --NDug/L 11/07/16 1.10 10 ----1.28 J ND 2.15 J 5.56 J 1.57 J 2.00 J 68.8 14.2 2.58 J 1.79 J NDug/L 05/09/17 1.10 10 ----ND ND 1.92 J 5.31 J 1.50 J 3.12 J 37.7 13.3 37.9 1.38 J ND Copper ug/L 01/11/00 --5 ND --------ND --ND ND ND ------NC 2L = 1000 ug/L ug/L 02/21/00 --5 ND ------------------------EPA MCL = 1300 ug/L#ug/L 02/22/00 --5 ----------------ND ND ------ ug/L 10/10/00 --200 ND --------ND --ND ND ND ------ ug/L 07/12/01 --200 ND --------ND --ND ND ND ------ug/L 10/24/01 --200 ND --------ND --ND --ND ------ug/L 05/28/02 --200 ND --------ND --ND --ND ------ ug/L 11/05/02 --200 ND --------ND --ND ND ND ------ug/L 05/29/03 --200 ND --------ND --ND ND ND ------ug/L 11/05/03 --200 ------ND ND ----------------ug/L 05/25/04 --200 ND ----ND ND ND --ND ND ND ------ ug/L 11/23/04 --200 ND ----ND ND ND --ND ND ND ------ug/L 05/16/05 --200 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --200 ------ND ND ND --ND ND ND ------ ug/L 05/24/06 --200 ------ND ND ND --ND ND ND ----NDug/L 11/20/06 ----------ND ND ND --ND ND ND ----NDug/L 05/22/07 --10 --ND --ND ND ND ND ND ND ND ----NDug/L 11/13/07 --10 --ND --1.00 J 10.0 ND ND 3.90 J ND ND ----ND ug/L 05/29/08 --10 --ND --ND ND ND 1.00 B ND ND ND ----1.00 Jug/L 11/17/08 --10 --ND --ND ND ND ND 1.80 J ND ND ----NDug/L 05/26/09 --10 --ND --1.00 B 1.49 B 4.37 B 1.20 B 1.76 B 2.44 B ND ----1.47 J ug/L 11/10/09 --10 --4.64 J --3.17 J 2.26 J ND ND ND 4.52 J ND ----NDug/L 05/26/10 --10 ----ND ND ND ND ND ND ND ND ----NDug/L 11/15/10 --10 ----ND ND ND ND ND ND ND ND ----NDug/L 05/09/11 --10 ----ND ND ND ND ND 4.99 J 10.6 3.88 J ----ND ug/L 11/14/11 --10 ----6.65 J ND ND ND 2.69 J 2.12 J 156 2.31 J ----NDug/L 05/07/12 --10 ----ND 3.00 J ND ND ND 8.77 J Dry 6.32 J ----NDug/L 11/05/12 --10 ----ND ND ND ND ND 5.89 J 1.70 J ND ND ND ND ug/L 05/13/13 --10 ----ND 2.25 J ND ND ND ND 8.21 J 4.99 J ND 2.71 J ND ug/L 11/11/13 --10 ----ND ND ND ND ND 36.6 ND 1.70 J ND ND NDug/L 05/12/14 --10 ----2.94 J ND ND ND ND 40.3 ND 5.14 J 1.70 J ND NDug/L 11/17/14 1.60 10 ----ND ND ND ND ND 9.72 J ND 5.32 J ND ND ND ug/L 05/12/15 1.60 10 ----ND ND ND ND ND 3.82 J 3.09 J 3.41 J 26.6 ND NDug/L 11/09/15 1.60 10 ----ND ND ND ND ND ND 3.00 J 9.75 J 21.5 ND NDug/L 05/10/16 1.60 10 ----ND ND ND ND ND 2.97 B 11.7 B 11.8 B 8.40 B 1.78 B 2.90 Jug/L 11/07/16 1.60 10 ----3.83 B 3.42 B 3.53 B 2.05 B 2.61 B 3.98 B 8.81 B 11.1 B 3.59 B 4.74 B 3.34 J ug/L 05/09/17 1.60 10 ----3.71 B 6.62 B 2.52 B ND ND 2.11 B 6.63 B 7.46 B 1.80 B ND 2.45 J July 2017 Page 3 of 8 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MDL MW-107S MW-108 SWSReportingLimit Upgradient TABLE 4 Summary of Groundwater Monitoring Results for MSW Wells Detected Constituents Sampson County Active MSW Landfill, Permit No. 82-02Sampson County, North Carolina Blanks Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 GGI Outfall 2GGI Outfall 1MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Lead ug/L 01/11/00 --5 5.12 --------ND --ND ND 5.42 ------ NC 2L = 15 ug/L ug/L 02/21/00 --5 ND ------------------------EPA MCL = 15 ug/L#ug/L 02/22/00 --5 ----------------ND ND ------ug/L 10/10/00 --10 ND --------ND --ND 15 ND ------ug/L 07/12/01 --10 ND --------ND --ND 17 ND ------ ug/L 10/24/01 --10 ND --------ND --ND --ND ------ug/L 05/28/02 --10 ND --------11 --ND --ND ------ug/L 11/05/02 --10 ND --------ND --ND ND ND ------ ug/L 05/29/03 --10 ND --------ND --ND ND ND ------ug/L 11/05/03 --10 ------ND ND ----------------ug/L 05/25/04 --10 ND ----ND ND ND --ND ND ND ------ug/L 11/23/04 --10 ND ----22 ND ND --ND ND ND ------ ug/L 05/16/05 --10 ------ND ND 41 --ND ND ND ------ug/L 11/25/05 --10 ------ND ND ND --ND ND ND ------ug/L 05/24/06 --10 ------ND ND ND --ND ND ND ----ND ug/L 11/20/06 --10 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --10 --ND --ND ND ND ND ND ND ND ----NDug/L 11/13/07 --10 --ND --ND ND ND ND ND 3.4 J ND ----NDug/L 05/29/08 --10 --2.1 J --ND ND 4.7 J 2.7 J ND ND ND ----ND ug/L 11/17/08 --10 --ND --ND ND 3.5 J ND ND 3.9 J ND ----NDug/L 05/26/09 --10 --2.2 J --ND ND 11.3 ND ND 7.8 J ND ----NDug/L 11/10/09 --10 --ND --ND ND 8.24 J 1.91 J ND 16.4 2.32 J ----ND ug/L 05/26/10 --10 ----ND ND ND 9.50 J 1.91 J ND 11.2 4.13 J ----ND ug/L 11/15/10 --10 ----2.56 J 2.68 J 1.95 J 7.87 J 2.59 J 2.34 J 13.5 4.31 J ----NDug/L 05/09/11 --10 ----ND ND ND 2.18 J 2.53 J ND 11.8 3.33 J ----NDug/L 11/14/11 --10 ----ND ND ND 4.59 J ND ND 9.02 J ND ----ND ug/L 01/17/12 --10 --------------------------Lead (Dissolved)ug/L 01/17/12 --10 --------------------------ug/L 05/07/12 --10 ----ND ND ND 2.31 J ND 7.50 J Dry ND ----NDVerification Event ug/L 07/11/12 --10 -------------------------- Lead (Dissolved)ug/L 07/11/12 --10 --------------------------ug/L 11/05/12 --10 ----ND ND ND 4.91 J ND ND 14.4 2.20 J ND 1.95 J NDug/L 05/13/13 --10 ----ND ND ND 2.96 J ND ND ND ND ND ND ND ug/L 11/11/13 --10 ----ND ND ND ND ND ND 5.04 J ND ND ND NDug/L 05/12/14 --10 ----ND ND ND 2.79 J 2.42 J ND ND 2.73 J ND ND NDug/L 11/17/14 2.10 10 ----ND ND ND ND ND ND 5.80 J ND ND ND NDug/L 05/12/15 2.10 10 ----ND ND ND ND ND ND ND ND 10.9 ND ND ug/L 11/09/15 2.10 10 ----ND ND ND 5.88 J ND ND ND ND 5.55 J 4.21 J NDug/L 05/10/16 2.10 10 ----ND ND ND ND ND ND 6.93 J ND 4.03 J ND NDug/L 11/07/16 3.10 10 ----3.66 J 33.4 ND 3.18 J ND ND 20.9 31.4 4.72 J 13.7 ND ug/L 05/09/17 3.10 10 ----ND ND 4.17 J ND ND ND 4.07 J ND ND ND NDNickel ug/L 01/11/00 --5 ND --------ND --ND ND ND ------NC 2L = 100 ug/L ug/L 02/21/00 --5 ND ------------------------No EPA MCL ug/L 02/22/00 --5 ----------------ND ND ------ ug/L 10/10/00 --50 ND --------ND --ND ND ND ------ug/L 07/12/01 --50 ND --------ND --ND ND ND ------ug/L 10/24/01 --50 ND --------ND --ND --ND ------ ug/L 05/28/02 --50 ND --------ND --ND --ND ------ ug/L 11/05/02 --50 ND --------ND --ND ND ND ------ug/L 05/29/03 --50 ND --------ND --ND ND ND ------ug/L 11/05/03 --50 ------ND ND ---------------- ug/L 05/25/04 --50 ND ----ND ND ND --ND 86 ND ------ug/L 11/23/04 --50 ND ----ND ND ND --ND 107 ND ------ug/L 05/16/05 --50 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --50 ------ND ND ND --ND 61 ND ------ ug/L 05/24/06 --50 ------ND ND ND --ND ND ND ----NDug/L 11/20/06 --50 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --50 --ND --ND 2.2 J 15.4 J ND ND 74.6 3.9 J ----ND ug/L 11/13/07 --50 --ND --ND ND 7.8 J 8.2 J 8.7 J 49.4 J 8.3 J ----NDug/L 05/29/08 --50 --ND --ND ND 37.1 J 4.3 J ND 27.6 J 19.9 J ----NDug/L 11/17/08 --50 --ND --2.8 B 2.2 B 17.6 J 5.7 B ND 64.9 20.9 J ----3.2 Jug/L 05/26/09 --50 --2.4 B --1.9 B 7.2 J 31.3 J 3.4 B 1.5 B 71.7 12.4 J ----0.7 J ug/L 11/10/09 --50 --ND --4.16 J 2.37 J 26.0 J ND ND 139 9.78 J ----NDug/L 01/18/10 --50 ----------------75.3 ------ND(Dissolved)ug/L 01/18/10 --50 ----------------74.6 ------ND ug/L 05/26/10 --50 ----ND ND ND 49.0 J ND ND 98.3 17.6 J ----NDug/L 11/15/10 --50 ----ND 2.09 J ND 31.4 J 7.49 J ND 110 14.7 J ----NDug/L 05/09/11 --50 ----ND 2.77 J 4.54 J 7.57 J 2.61 J 2.22 J 82.3 28.8 J ----NDug/L 11/14/11 --50 ----2.86 J 3.80 J 5.27 J 13.4 J 4.55 J 2.91 J 89.1 25.0 J ----ND ug/L 05/07/12 --50 ----ND 8.30 J 3.30 J 7.05 J 2.55 J 15.8 J Dry 19.8 J ----NDug/L 11/05/12 --50 ----ND 2.05 J 3.89 J 10.2 J 2.66 J 3.07 J 105 20.9 J 2.92 J 2.65 J NDug/L 05/13/13 --50 ----ND 8.13 J 6.65 J 9.46 J 2.29 J 2.61 J 24.1 J 16.9 J 3.36 J 5.23 J ND ug/L 11/11/13 --50 ----ND 2.42 J 3.45 J 14.5 J 3.63 J 3.98 J 69.5 29.0 J 3.50 J 2.78 J ND ug/L 05/12/14 --50 ----ND 4.34 J 3.06 J 5.98 J 1.86 J ND 3.05 J 32.0 J 2.49 J 4.03 J NDug/L 11/17/14 1.80 50 ----ND 3.32 J 2.05 J 8.04 J 2.73 J 2.48 J 54.4 20.0 J 3.22 J ND NDug/L 05/12/15 1.80 50 ----ND 8.15 B 3.98 B 6.92 B 2.63 B 1.98 B 6.67 B 11.2 J 17.0 J 12.3 J 1.89 J ug/L 11/09/15 1.80 50 ----ND 4.36 J 5.25 J 7.25 J 3.69 J 2.46 J 15.5 J 20.2 J 23.3 J 2.22 J NDug/L 05/10/16 1.80 50 ----ND 5.97 J 7.36 J 9.98 J ND ND 62.1 33.6 J 37.1 J ND NDug/L 11/07/16 2.20 50 ----ND 12.5 J 42.7 J 4.45 J ND ND 86.2 22.6 J 4.44 J 4.86 J NDug/L 05/09/17 2.20 50 ----ND ND 14.1 J 3.50 J ND 2.31 J 52.6 11.9 J 40.1 J ND ND Selenium ug/L 01/11/00 --5 ND ND ------ND --ND ND ND ------NC 2L = 20 ug/L ug/L 02/21/00 --5 ND ND ----------------------EPA MCL = 50 ug/L ug/L 02/22/00 --5 ----------------ND ND ------ ug/L 10/10/00 --20 ND ND ------ND --ND ND ND ------ug/L 07/12/01 --20 ND ND ------ND --ND ND ND ------ug/L 10/24/01 --20 ND ND ------ND --ND --ND ------ug/L 05/28/02 --20 ND ND ------ND --ND --ND ------ ug/L 11/05/02 --20 ND ND ------ND --ND ND ND ------ug/L 05/29/03 --20 ND ND ------ND --ND ND ND ------ug/L 11/05/03 --20 ------ND ND ---------------- ug/L 05/25/04 --20 ND ND --ND ND ND --ND ND ND ------ug/L 11/23/04 --20 ND ND --ND ND ND --ND ND ND ------ug/L 05/16/05 --20 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --20 ------ND ND ND --ND ND ND ------ ug/L 05/24/06 --20 ------ND ND ND --ND ND ND ----NDug/L 11/20/06 --20 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --10 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/13/07 --10 --ND --ND 2.0 B ND ND ND ND ND ----3.1 J ug/L 05/29/08 --10 --ND --2.7 B 2.1 B ND 3.5 B ND ND ND ----2.1 Jug/L 11/17/08 --10 --ND --ND ND ND ND ND ND ND ----NDug/L 05/26/09 --10 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/10/09 --10 --ND --ND ND ND ND ND ND ND ----NDug/L 05/26/10 --10 ----ND ND ND ND ND ND ND ND ----NDug/L 11/15/10 --10 ----ND ND ND ND ND ND ND ND ----NDug/L 05/09/11 --10 ----ND ND ND ND ND ND ND ND ----ND ug/L 05/09/11 --10 ----ND ND ND ND ND ND ND ND ----NDug/L 11/14/11 --10 ----ND ND ND ND ND ND ND ND ----NDug/L 05/07/12 --10 ----ND ND ND 2.94 B ND ND Dry 3.13 (ND)B ----4.01 (ND)J ug/L 11/05/12 --10 ----ND ND ND ND ND ND ND ND ND ND NDug/L 05/13/13 --10 ----ND ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --10 ----ND ND ND ND ND ND ND ND ND ND NDug/L 05/12/14 --10 ----ND ND ND ND ND ND ND ND ND ND ND ug/L 11/17/14 5.00 10 ----ND ND ND ND ND ND ND ND ND ND NDug/L 05/12/15 5.00 10 ----ND ND ND ND ND ND ND ND ND ND NDug/L 05/12/15 5.00 10 ----ND ND ND ND ND ND ND ND ND ND ND ug/L 05/10/16 5.00 10 ----ND ND ND ND ND ND ND ND ND ND NDug/L 11/07/16 6.20 10 ----ND ND ND ND ND ND ND ND ND ND NDug/L 05/09/17 6.20 10 ----ND ND ND ND ND ND ND ND ND ND NDSilverug/L 01/11/00 --5 ND ND ------ND --ND ND ND ------NC 2L = 20 ug/L ug/L 02/21/00 --5 ND ND ----------------------EPA MCL = 100 ug/L*ug/L 02/22/00 --------------------ND ND ------ug/L 10/10/00 --10 ND ND ------ND --ND ND ND ------ ug/L 07/12/01 --10 ND ND ------ND --ND ND ND ------ ug/L 10/24/01 --10 ND ND ------ND --ND --ND ------ug/L 05/28/02 --10 ND ND ------ND --ND --ND ------ug/L 11/05/02 --10 ND ND ------ND --ND ND ND ------ ug/L 05/29/03 --10 ND ND ------ND --ND ND ND ------ug/L 11/05/03 --10 ------ND ND ----------------ug/L 05/25/04 --10 ND ND --ND ND ND --ND ND ND ------ug/L 11/23/04 --10 ND ND --ND ND ND --ND ND ND ------ ug/L 05/16/05 --10 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --10 ------ND ND ND --ND ND ND ------ug/L 05/24/06 --10 ------ND ND ND --ND ND ND ----ND ug/L 11/20/06 --10 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --10 --ND --ND ND ND ND ND ND ND ----NDug/L 11/13/07 --10 --ND --ND ND ND ND ND ND ND ----NDug/L 05/29/08 --10 --ND --ND ND ND 2.1 B ND ND ND ----2.9 J ug/L 11/17/08 --10 --ND --ND ND ND ND ND ND ND ----NDug/L 05/26/09 --10 --ND --ND ND 33.5 ND ND ND ND ----NDug/L 07/23/09 --10 ----------ND ------------ND ug/L 11/10/09 --10 --ND --ND ND ND ND ND ND ND ----NDug/L 05/26/10 --10 ----ND ND ND ND ND ND ND ND ----NDug/L 11/15/10 --10 ----ND ND ND ND ND ND ND ND ----NDug/L 05/09/11 --10 ----ND ND ND ND ND ND ND ND ----ND ug/L 11/14/11 --10 ----ND ND ND ND ND ND ND ND ----NDug/L 05/07/12 --10 ----ND ND ND ND ND ND Dry ND ----NDug/L 11/05/12 --10 ----ND ND ND ND ND ND ND ND ND ND ND ug/L 05/13/13 --10 ----ND ND ND ND ND ND ND ND ND ND ND ug/L 11/11/13 --10 ----ND ND ND ND ND ND ND ND ND ND NDug/L 05/12/14 --10 ----ND ND ND ND ND ND ND ND ND ND NDug/L 11/17/14 1.90 10 ----ND ND ND ND ND ND ND ND ND ND ND ug/L 05/12/15 1.90 10 ----ND ND ND ND ND ND ND ND ND ND NDug/L 11/09/15 1.90 10 ----ND ND ND ND ND ND ND ND 1.91 J ND NDug/L 05/10/16 1.90 10 ----ND ND ND ND ND ND ND ND ND ND NDug/L 11/07/16 1.90 10 ----ND ND ND ND ND ND 5.30 J ND ND ND ND ug/L 05/09/17 1.90 10 ----ND ND ND ND ND ND ND ND ND ND ND July 2017 Page 4 of 8 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MDL MW-107S MW-108 SWSReportingLimit Upgradient TABLE 4 Summary of Groundwater Monitoring Results for MSW Wells Detected Constituents Sampson County Active MSW Landfill, Permit No. 82-02Sampson County, North Carolina Blanks Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 GGI Outfall 2GGI Outfall 1MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Thallium ug/L 01/11/00 --10 ND --------ND --ND ND ND ------ SWS GPS = 0.28 ug/L ug/L 02/21/00 --10 ND ------------------------EPA MCL = 2 ug/L ug/L 02/22/00 --10 ----------------ND ND ------ug/L 10/10/00 --10 ND --------ND --ND ND ND ------ug/L 07/12/01 --10 ND --------ND --ND ND ND ------ ug/L 10/24/01 --10 ND --------ND --ND --ND ------ug/L 05/28/02 --10 ND --------ND --ND --ND ------ug/L 11/05/02 --10 ND --------ND --ND ND ND ------ ug/L 05/29/03 --10 ND --------ND --ND ND ND ------ug/L 11/05/03 --10 ------ND ND ----------------ug/L 05/25/04 --10 ND ----ND ND ND --ND ND ND ------ug/L 11/23/04 --10 ND ----ND ND ND --ND ND ND ------ ug/L 05/16/05 --10 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --10 ------ND ND ND --ND ND ND ------ug/L 05/24/06 --10 ------ND ND ND --ND ND ND ----ND ug/L 11/20/06 --10 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --5.5 --0.108 J --ND ND ND ND ND 0.07 J ND ----NDug/L 11/13/07 --5.5 --0.093 J --ND ND ND ND ND ND 0.052 J ----NDug/L 05/29/08 --5.5 --0.090 J --ND 0.047 J ND ND ND ND 0.066 J ----ND ug/L 11/17/08 --5.5 --0.070 J --ND ND 0.044 J ND ND 0.045 J ND ----NDug/L 05/26/09 --5.5 --ND --ND ND ND ND ND ND ND ----NDug/L 11/10/09 --5.5 --ND --ND ND ND ND ND 2.31 J ND ----ND ug/L 05/26/10 --5.5 ----ND ND ND ND ND ND ND ND ----ND ug/L 11/15/10 --5.5 ----ND ND ND ND ND ND ND ND ----NDug/L 05/09/11 --5.5 ----ND ND ND ND ND ND ND ND ----NDug/L 11/14/11 --5.5 ----ND ND ND ND ND ND ND ND ----ND ug/L 05/07/12 --5.5 ----0.115 J ND 0.150 J ND ND ND Dry 0.146 J ----NDug/L 11/05/12 --5.5 ----ND ND ND ND ND ND ND ND ND ND NDug/L 05/13/13 --5.5 ----0.121 J ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --5.5 ----0.147 J ND ND ND ND ND ND ND ND ND ND ug/L 05/12/14 --5.5 ----0.202 J ND ND ND ND ND ND ND ND ND NDug/L 11/17/14 0.110 5.5 ----0.155 J ND ND ND ND ND ND ND ND ND NDug/L 05/12/15 0.110 5.5 ----0.130 J ND ND ND ND ND ND ND 0.189 J ND ND ug/L 11/09/15 0.110 5.5 ----ND ND ND ND ND ND ND ND ND ND NDug/L 05/10/16 0.110 5.5 ----0.165 J ND ND ND ND ND ND ND ND ND NDug/L 11/07/16 0.110 5.5 ----0.255 J ND ND 0.116 J ND ND ND ND 0.152 J 0.116 J NDug/L 05/09/17 0.110 5.5 ----0.347 J ND ND 0.115 J ND ND ND ND ND 0.162 J ND Vanadium ug/L 01/11/00 --5 5.71 --------ND --ND 5.08 12 ------SWS GPS = 0.3 ug/L ug/L 02/21/00 --5 ND ------------------------No EPA MCL ug/L 02/22/00 --5 ----------------ND ND ------ ug/L 10/10/00 --40 ND --------ND --ND ND ND ------ug/L 07/12/01 --40 ND --------ND --ND ND ND ------ug/L 10/24/01 --40 ND --------ND --ND --ND ------ug/L 05/28/02 --40 ND --------ND --ND --ND ------ ug/L 11/05/02 --40 ND --------ND --ND ND ND ------ug/L 05/29/03 --40 ND --------ND --ND ND ND ------ug/L 11/05/03 --40 ------ND ND ---------------- ug/L 05/25/04 --40 ND ----ND ND ND --ND ND ND ------ ug/L 11/23/04 --40 ND ----0.059 ND ND --ND ND ND ------ug/L 05/16/05 --40 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --40 ------ND ND ND --ND ND ND ------ ug/L 05/24/06 --40 ------ND ND ND --ND ND ND ----NDug/L 11/20/06 --40 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --25 --ND --ND ND ND ND ND ND 6.5 J ----NDug/L 11/13/07 --25 --4.6 J --ND ND ND ND ND ND 6.4 J ----ND ug/L 05/29/08 --25 --3.0 B --ND ND ND 6.7 J ND ND ND ----1.2 Jug/L 11/17/08 --25 --ND --ND ND ND ND ND ND 33.3 ----NDug/L 02/17/09 --25 ------------------14.3 J ----ND ug/L 05/26/09 --25 --4.1 J --0.7 J 1.3 J 7.5 J 4.0 J 0.7 J 10.0 J 23.4 J ----NDug/L 11/10/09 --25 --2.33 J --3.59 J ND ND ND ND 8.07 J 18.0 J ----NDug/L 05/26/10 --25 ----ND ND ND ND ND ND ND 1.63 J ----NDug/L 11/15/10 --25 ----ND 1.52 J ND ND 1.44 J ND 7.07 J 7.49 J ----ND ug/L 05/09/11 --25 ----ND ND ND ND ND ND 3.14 J 1.53 J ----NDug/L 11/14/11 --25 ----ND ND ND ND 6.74 J ND ND 21.2 J ----NDug/L 01/17/12 --25 -------------------------- (Dissolved)ug/L 01/17/12 --25 --------------------------ug/L 05/07/12 --25 ----ND 3.49 J ND ND ND 12.6 J Dry 2.83 J ----ND(Verification Event)ug/L 07/11/12 --25 --------------------------(Dissolved)ug/L 07/11/12 --25 -------------------------- ug/L 11/05/12 --25 ----ND ND ND ND 1.52 J 1.82 J ND ND ND ND NDug/L 05/13/13 --25 ----ND ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --25 ----ND ND ND ND 2.64 J ND ND 4.21 J ND ND NDug/L 05/12/14 --25 ----ND ND ND ND 24.7 J ND ND ND ND ND ND ug/L 11/17/14 1.40 25 ----ND ND ND ND 11.1 J ND ND 8.34 J ND ND NDug/L 05/12/15 1.40 25 ----ND ND ND ND 11.7 J ND ND ND 3.31 J ND NDug/L 11/09/15 1.40 25 ----ND ND ND ND 12.3 J ND 8.84 J 1.90 J 4.61 J 4.40 J NDug/L 05/10/16 1.40 25 ----ND ND ND ND 7.59 J 1.69 J 19.8 J 9.21 J 3.13 J ND ND ug/L 11/07/16 1.40 25 ----ND ND 4.39 J ND ND ND 30.6 2.32 J 1.47 J 5.07 J ND(Dissolved)ug/L 11/07/16 1.40 25 ----------------ND ------NDug/L 05/09/17 1.40 25 ----ND ND 8.20 J ND 1.58 J ND 24.5 J ND ND ND ND Zinc ug/L 01/11/00 --5 8.05 --------5.59 --10.8 5.45 10.3 ------ NC 2L = 1000 ug/L ug/L 02/21/00 --5 ND ------------------------EPA MCL = 5000 ug/L*ug/L 02/22/00 --5 ----------------ND 5.83 ------ug/L 10/10/00 --50 ND --------ND --ND 80 ND ------ ug/L 07/12/01 --50 ND --------ND ----92 ND ------ug/L 10/24/01 --20 ND --------ND --ND --ND ------ug/L 05/28/02 --50 ND --------ND --ND --ND ------ug/L 11/05/02 --50 ND --------ND --ND ND ND ------ ug/L 05/29/03 --50 ND --------ND --ND ND ND ------ug/L 11/05/03 --50 ------ND ND ------65 --------ug/L 05/25/04 --50 ND ----ND ND ND --ND 293 ND ------ ug/L 11/23/04 --50 ND ----ND ND ND --ND 443 ND ------ug/L 05/16/05 --50 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --50 ------ND ND ND --ND 203 ND ------ug/L 05/24/06 --50 ------ND ND ND --ND 87 ND ----ND ug/L 11/20/06 --50 ------ND ND ND --ND 117 ND ----NDug/L 05/22/07 --10 --2.3 J --ND ND 27.2 1.5 J ND 234 2.9 J ----NDug/L 11/13/07 --10 --ND --ND ND 18.0 2.5 J 217 133 17.5 ----ND ug/L 01/09/08 --10 --------------3.7 J --------NDug/L 05/29/08 --10 --2.5 B --1.6 B ND 96.2 10.2 1.9 B 75.5 25.6 ----1.8 Jug/L 11/17/08 --10 --17.6 B --ND ND 35.6 4.7 B 6.2 B 195 12.8 B ----4.6 Jug/L 05/26/09 --10 --6.7 J --5.9 J 3.7 J 55.4 5.2 J 17.5 183 12.7 ----ND ug/L 11/10/09 --10 --5.18 J --ND ND 57.6 ND ND 449 12.0 ----NDug/L 01/18/10 --10 ----------------233 ------NDug/L 05/26/10 --10 ----5.46 J ND ND 126 ND ND 294 8.72 J ----ND ug/L 11/15/10 --10 ----ND ND ND 105 40.1 ND 323 39.1 ----ND ug/L 05/09/11 --10 ----ND ND ND 5.15 J 7.32 J 11.4 257 52.8 ----NDug/L 11/14/11 --10 ----ND ND ND 26.5 6.30 J 3.91 J 355 28.4 ----NDug/L 05/07/12 --10 ----ND ND ND 11.8 ND 18.4 Dry 56.8 ----ND ug/L 11/05/12 --10 ----ND ND ND 14.6 ND 7.81 J 274 14.3 9.63 J 7.73 J NDug/L 05/13/13 --10 ----4.86 J ND ND 5.85 J 5.25 J 5.13 J 108 26.4 10.2 16.2 NDug/L 11/11/13 --10 ----ND ND ND 15.2 12.4 26.4 211 50.5 15.8 15.0 NDug/L 05/12/14 --10 ----ND ND ND 4.16 J 9.00 J 12.7 10.0 69.3 11.8 19.6 ND ug/L 11/17/14 3.80 10 ----ND ND ND 8.92 J 12.4 4.36 J 138 53.1 22.5 15.1 NDug/L 05/12/15 3.80 10 ----ND ND 5.43 J 9.49 J 7.63 J ND 6.75 J 26.3 190 26.2 NDug/L 11/09/15 3.80 10 ----5.26 J ND ND 6.40 J 20.3 6.22 J 36.8 53.8 150 9.80 J ND ug/L 05/10/16 3.80 10 ----ND ND ND 46.8 ND ND 134 122 238 ND NDug/L 11/07/16 4.40 10 ----38.5 473 ND 9.23 J 4.58 J 4.87 J 161 456 46.4 162 NDug/L 05/09/17 4.40 10 ----ND ND ND 12.5 ND 4.64 J 80.2 27.9 41.2 9.33 J NDAcetoneug/L 01/11/00 --10 ND --------ND --ND ND ND ------ NC 2L = 6000 ug/L ug/L 02/21/00 --10 ND ------------------------No EPA MCL ug/L 02/22/00 --10 ----------------ND ND ------ug/L 10/10/00 --100 ND --------ND --ND ND ND ------ ug/L 07/12/01 --100 ND --------ND --ND ND ND ------ug/L 10/24/01 --100 ----------ND --ND --ND ------ug/L 05/28/02 --100 ND --------ND --ND --ND ------ug/L 11/05/02 --100 ND --------ND --ND ND ND ------ ug/L 05/29/03 --100 ND --------ND --ND ND ND ------ug/L 11/05/03 --100 ND ----ND ND ND --ND ND ND ------ug/L 05/25/04 --100 ND ----ND ND ND --ND ND ND ------ ug/L 11/23/04 --100 ND ----ND ND ND --ND ND ND ------ ug/L 05/16/05 --100 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --100 ------ND ND ND --ND ND ND ------ug/L 05/24/06 --100 ------ND ND ND --ND ND ND ----ND ug/L 11/20/06 --100 ------ND ND ND --ND ND 204 ----NDug/L 02/28/07 --100 ------------------ND ----NDug/L 05/22/07 --100 --ND --ND 1.7 B 1.6 B 3.2 B ND 9.7 B ND ----6.6 Jug/L 11/13/07 --100 --ND --ND ND ND ND ND ND ND ----ND ug/L 05/29/08 --100 --ND --ND ND ND ND ND ND ND ----2.9 Jug/L 11/17/08 --100 --ND --ND ND ND ND ND ND 23 B ----9.8 Jug/L 05/26/09 --100 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/10/09 --100 ------ND ND ND ND ND 2.8 J ND ----NDug/L 05/26/10 --100 ------ND ND ND ND ND 7.0 J 5.2 J ----NDug/L 11/15/10 --100 ------ND ND ND ND 4.6 B ND ND ----9.2 Jug/L 05/09/11 --100 ------ND ND ND ND ND ND ND ----ND ug/L 11/14/11 --100 ------ND ND ND ND ND ND ND ----NDug/L 05/07/12 --100 ------ND ND ND ND ND Dry ND ----NDug/L 11/05/12 --100 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/13/13 --100 ------ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --100 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/14 --100 ------ND ND ND ND ND ND ND ND ND NDug/L 11/17/14 1.2 100 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/15 1.2 100 ------ND ND ND ND ND ND ND 9.7 J ND NDug/L 11/09/15 1.2 100 ------ND ND ND ND ND ND ND 3.7 J ND NDug/L 05/10/16 1.2 100 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/07/16 10 100 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/09/17 10 100 ------ND 22 B ND ND ND ND ND ND ND 18 J July 2017 Page 5 of 8 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MDL MW-107S MW-108 SWSReportingLimit Upgradient TABLE 4 Summary of Groundwater Monitoring Results for MSW Wells Detected Constituents Sampson County Active MSW Landfill, Permit No. 82-02Sampson County, North Carolina Blanks Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 GGI Outfall 2GGI Outfall 1MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Benzene ug/L 01/11/00 --2 ND --------ND --ND ND ND ------ NC 2L = 1 ug/L ug/L 02/21/00 --2 ND ------------------------EPA MCL = 5 ug/L ug/L 02/22/00 --2 ----------------ND ND ------ug/L 10/10/00 --5 ND --------ND --ND ND ND ------ug/L 07/12/01 --5 ND --------ND --ND ND ND ------ ug/L 10/24/01 --5 ----------ND --ND --ND ------ug/L 05/28/02 --5 ND --------ND --ND --ND ------ug/L 11/05/02 --5 ND --------ND --ND ND ND ------ ug/L 05/29/03 --5 ND --------ND --ND ND ND ------ug/L 11/05/03 --5 ND ----ND ND ND --ND ND ND ------ug/L 05/25/04 --5 ND ----ND ND ND --ND ND ND ------ug/L 11/23/04 --5 ND ----ND ND ND --ND ND ND ------ ug/L 05/16/05 --5 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --5 ------ND ND ND --ND ND ND ------ug/L 05/24/06 --5 ------ND ND ND --ND ND ND ----ND ug/L 11/20/06 --5 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --1 --ND --ND ND ND ND ND 3.8 ND ----NDug/L 08/07/07 --1 ----------------2.3 ------NDug/L 11/13/07 --1 --ND --ND ND ND ND ND 0.73 J ND ----ND ug/L 05/29/08 --1 --ND --ND ND ND ND ND 0.95 J ND ----NDug/L 11/17/08 --1 --ND --ND ND ND ND ND 0.79 J ND ----NDug/L 05/26/09 --1 --ND --ND ND ND ND ND 0.61 J ND ----ND ug/L 11/10/09 --1 ------ND ND ND ND ND ND ND ----ND ug/L 05/26/10 --1 ------ND ND ND ND ND ND ND ----NDug/L 11/15/10 --1 ------ND ND ND ND ND ND ND ----NDug/L 05/09/11 --1 ------ND ND ND ND ND ND ND ----ND ug/L 11/14/11 --1 ------ND ND ND ND ND ND ND ----NDug/L 05/07/12 --1 ------ND ND ND ND ND Dry ND ----NDug/L 11/05/12 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/13/13 --1 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/11/13 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/14 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/17/14 0.15 1 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/15 0.15 1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/09/15 0.15 1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/10/16 0.15 1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/07/16 0.15 1 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/09/17 0.15 1 ------ND ND ND ND ND ND ND ND ND NDCarbon disulfide ug/L 01/11/00 ----ND ND ------ND --ND ND ND ------NC 2L = 700 ug/L ug/L 02/21/00 ----ND ND ---------------------- No EPA MCL ug/L 02/22/00 --------------------ND ND ------ug/L 10/10/00 ----ND ND ------ND --ND ND ND ------ug/L 07/12/01 ----ND ND ------ND --ND ND ND ------ug/L 10/24/01 --------------ND --ND --ND ------ ug/L 05/28/02 ----ND ND ------ND --ND --ND ------ug/L 11/05/02 ----ND ND ------ND --ND ND ND ------ug/L 05/29/03 ----ND ND ------ND --ND ND ND ------ ug/L 11/05/03 ----ND ND --ND ND ND --ND ND ND ------ ug/L 05/25/04 ----ND ND --ND ND ND --ND ND ND ------ug/L 11/23/04 ----ND ND --ND ND ND --ND ND ND ------ug/L 05/16/05 ----------ND ND ND --ND ND ND ------ ug/L 11/25/05 ----------ND ND ND --ND ND ND ------ug/L 05/24/06 --100 ------ND ND ND --ND ND ND ----NDug/L 11/20/06 --100 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --100 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/13/07 --100 --ND --ND ND ND ND ND ND ND ----NDug/L 05/29/08 --100 --ND --ND ND ND ND ND ND ND ----NDug/L 11/17/08 --100 --ND --ND ND ND ND ND ND 2.6 J ----ND ug/L 05/26/09 --100 --ND --ND ND ND ND ND ND ND ----NDug/L 11/10/09 --100 ------ND ND ND ND ND ND ND ----NDug/L 05/26/10 --100 ------ND ND ND ND ND ND ND ----NDug/L 11/15/10 --100 ------ND ND ND ND ND ND ND ----ND ug/L 05/09/11 --100 ------ND ND ND ND ND ND ND ----NDug/L 11/14/11 --100 ------ND ND ND ND ND ND ND ----NDug/L 05/07/12 --100 ------ND ND ND ND ND Dry ND ----ND ug/L 11/05/12 --100 ------ND ND ND ND ND ND ND ND ND NDug/L 05/13/13 --100 ------ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --100 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/14 --100 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/17/14 1.5 100 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/15 1.5 100 ------ND ND ND ND ND ND ND ND ND NDug/L 11/09/15 1.5 100 ----ND ND ND ND ND ND ND ND ND ND ug/L 05/10/16 1.5 100 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/07/16 1.5 100 ------ND ND ND ND ND ND ND ND ND NDug/L 05/09/17 1.5 100 ------ND ND ND ND ND ND ND ND ND NDChlorobenzeneug/L 01/11/00 --2 ND --------ND --ND ND ND ------ NC 2L = 50 ug/L ug/L 02/21/00 --2 ND ------------------------EPA MCL = 100 ug/L ug/L 02/22/00 --2 ----------------ND ND ------ug/L 10/10/00 --5 ND --------ND --ND ND ND ------ug/L 07/12/01 --5 ND --------ND --ND ND ND ------ ug/L 10/24/01 --5 ----------ND --ND --ND ------ug/L 05/28/02 --5 ND --------ND --ND --ND ------ug/L 11/05/02 --5 ND --------ND --ND ND ND ------ ug/L 05/29/03 --5 ND --------ND --ND ND ND ------ug/L 11/05/03 --5 ND ----ND ND ND --ND ND ND ------ug/L 05/25/04 --5 ND ----ND ND ND --ND ND ND ------ug/L 11/23/04 --5 ND ----ND ND ND --ND ND ND ------ ug/L 05/16/05 --5 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --5 ------ND ND ND --ND ND ND ------ug/L 05/24/06 --5 ------ND ND ND --ND ND ND ----ND ug/L 11/20/06 --5 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --3 --ND --ND ND ND ND ND 1.4 J ND ----NDug/L 11/13/07 --3 --ND --ND ND ND ND ND ND ND ----NDug/L 05/29/08 --3 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/17/08 --3 --ND --ND ND ND ND ND ND ND ----NDug/L 05/26/09 --3 --ND --ND ND ND ND ND ND ND ----NDug/L 11/10/09 --3 ------ND ND ND ND ND ND ND ----ND ug/L 05/26/10 --3 ------ND ND ND ND ND ND ND ----ND ug/L 11/15/10 --3 ------ND ND ND ND ND ND ND ----NDug/L 05/09/11 --3 ------ND ND ND ND ND ND ND ----NDug/L 11/14/11 --3 ------ND ND ND ND ND ND ND ----ND ug/L 05/07/12 --3 ------ND ND ND ND ND Dry ND ----NDug/L 11/05/12 --3 ------ND ND ND ND ND ND ND ND ND NDug/L 05/13/13 --3 ------ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --3 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/14 --3 ------ND ND ND ND ND ND ND ND ND NDug/L 11/17/14 0.17 3 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/15 0.17 3 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/09/15 0.17 3 ------ND ND ND ND ND ND ND ND ND NDug/L 05/10/16 0.17 3 ------ND ND ND ND ND ND ND ND ND NDug/L 11/07/16 0.17 3 ------ND ND ND ND ND ND ND ND ND NDug/L 05/09/17 0.17 3 ------ND ND ND ND ND ND ND ND ND ND Chloroform ug/L 01/11/00 --2 ND --------ND --ND ND ND ------NC 2L = 70 ug/L ug/L 02/21/00 --2 ND ------------------------EPA MCL = 80 ug/L ug/L 02/22/00 --2 ----------------ND ND ------ ug/L 10/10/00 --5 ND --------ND --ND ND ND ------ug/L 07/12/01 --5 ND --------ND --ND ND ND ------ug/L 10/24/01 --5 ----------ND --ND --ND ------ug/L 05/28/02 --5 ND --------ND --ND --ND ------ ug/L 11/05/02 --5 ND --------ND --ND ND ND ------ug/L 05/29/03 --5 ND --------ND --ND ND ND ------ug/L 11/05/03 --5 ND ----ND ND ND --ND ND ND ------ ug/L 05/25/04 --5 ND ----ND ND ND --ND ND ND ------ ug/L 11/23/04 --5 ND ----ND ND ND --ND ND ND ------ug/L 05/16/05 --5 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --5 ------ND ND ND --ND ND ND ------ ug/L 05/24/06 --5 ------ND ND ND --ND ND ND ----NDug/L 11/20/06 --5 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --5 --ND --ND ND ND ND ND ND ND ----NDug/L 11/13/07 --5 --ND --ND ND ND ND ND ND ND ----ND ug/L 05/29/08 --5 --ND --ND ND ND ND ND ND ND ----NDug/L 11/17/08 --5 --0.68 J --ND ND ND ND ND ND ND ----NDug/L 05/26/09 --5 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/10/09 --5 ------ND ND ND ND ND ND ND ----NDug/L 05/26/10 --5 ------ND ND ND ND ND ND ND ----NDug/L 11/15/10 --5 ------ND ND ND ND ND ND ND ----NDug/L 05/09/11 --5 ------ND ND ND ND ND ND ND ----ND ug/L 11/14/11 --5 ------ND ND ND ND ND ND ND ----NDug/L 05/07/12 --5 ------ND ND ND ND ND Dry ND ----NDug/L 11/05/12 --5 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/13/13 --5 ------ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --5 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/14 --5 ------ND ND ND ND ND ND ND ND ND NDug/L 11/17/14 0.18 5 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/15 0.18 5 ------ND ND ND ND ND ND ND ND ND NDug/L 11/09/15 0.18 5 ------ND ND ND ND ND ND ND ND ND NDug/L 05/10/16 0.18 5 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/07/16 0.18 5 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/09/17 0.18 5 ------ND ND ND ND ND ND ND ND ND ND July 2017 Page 6 of 8 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MDL MW-107S MW-108 SWSReportingLimit Upgradient TABLE 4 Summary of Groundwater Monitoring Results for MSW Wells Detected Constituents Sampson County Active MSW Landfill, Permit No. 82-02Sampson County, North Carolina Blanks Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 GGI Outfall 2GGI Outfall 1MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date 1,1-Dichloroethane ug/L 01/11/00 --2 ND --------ND --ND ND ND ------ NC 2L = 6 ug/L ug/L 02/21/00 --2 ND ------------------------No EPA MCL ug/L 02/22/00 --2 ----------------ND ND ------ug/L 10/10/00 --5 ND --------ND --ND ND ND ------ug/L 07/12/01 --5 ND --------ND --ND ND ND ------ ug/L 10/24/01 --5 ----------ND --ND --ND ------ug/L 05/28/02 --5 ND --------ND --ND --ND ------ug/L 11/05/02 --5 ND --------ND --ND ND ND ------ ug/L 05/29/03 --5 ND --------ND --ND ND ND ------ug/L 11/05/03 --5 ND ----ND ND ND --ND ND ND ------ug/L 05/25/04 --5 ND ----ND ND ND --ND ND ND ------ug/L 11/23/04 --5 ND ----ND ND ND --ND ND ND ------ ug/L 05/16/05 --5 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --5 ------ND ND ND --ND ND ND ------ug/L 05/24/06 --5 ------ND ND ND --ND ND ND ----ND ug/L 11/20/06 --5 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --5 --ND --ND ND ND ND ND 0.39 J ND ----NDug/L 11/13/07 --5 --ND --ND ND ND ND ND ND ND ----NDug/L 05/29/08 --5 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/17/08 --5 --ND --ND ND ND ND ND ND ND ----NDug/L 05/26/09 --5 --ND --ND ND ND ND ND ND ND ----NDug/L 11/10/09 --5 ------ND ND ND ND ND ND ND ----ND ug/L 05/26/10 --5 ------ND ND ND ND ND ND ND ----ND ug/L 11/15/10 --5 ------ND ND ND ND ND ND ND ----NDug/L 05/09/11 --5 ------ND ND ND ND ND ND ND ----NDug/L 11/14/11 --5 ------ND ND ND ND ND ND ND ----ND ug/L 05/07/12 --5 ------ND ND ND ND ND Dry ND ----NDug/L 11/05/12 --5 ------ND ND ND ND ND ND ND ND ND NDug/L 05/13/13 --5 ------ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --5 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/14 --5 ------ND ND ND ND ND ND ND ND ND NDug/L 11/17/14 0.13 5 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/15 0.13 5 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/09/15 0.13 5 ------ND ND ND ND ND ND ND ND ND NDug/L 05/10/16 0.13 5 ------ND ND ND ND ND ND ND ND ND NDug/L 11/07/16 0.13 5 ------ND ND ND ND ND ND ND ND ND NDug/L 05/09/17 0.13 5 ------ND ND ND ND ND ND ND ND ND ND cis-1,2-Dichloroethene ug/L 01/11/00 --2 ND --------ND --ND ND ND ------NC 2L = 70 ug/L ug/L 02/21/00 --2 ND ------------------------EPA MCL = 70 ug/L ug/L 02/22/00 --2 ----------------ND ND ------ ug/L 10/10/00 --5 ND --------ND --ND ND ND ------ug/L 07/12/01 --5 ND --------ND --ND ND ND ------ug/L 10/24/01 --5 ----------ND --ND --ND ------ug/L 05/28/02 --5 ND --------ND --ND --ND ------ ug/L 11/05/02 --5 ND --------ND --ND ND ND ------ug/L 05/29/03 --5 ND --------ND --ND ND ND ------ug/L 11/05/03 --5 ND ----ND ND ND --ND ND ND ------ ug/L 05/25/04 --5 ND ----ND ND ND --ND ND ND ------ ug/L 11/23/04 --5 ND ----ND ND ND --ND ND ND ------ug/L 05/16/05 --5 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --5 ------ND ND ND --ND ND ND ------ ug/L 05/24/06 --5 ------ND ND ND --ND ND ND ----NDug/L 11/20/06 --5 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --5 --ND --ND ND ND ND ND ND 1.5 J ----NDug/L 11/13/07 --5 --ND --ND ND ND ND ND 0.69 J ND ----ND ug/L 05/29/08 --5 --ND --ND ND ND ND ND ND ND ----NDug/L 11/17/08 --5 --ND --ND ND ND ND ND ND ND ----NDug/L 05/26/09 --5 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/10/09 --5 ------ND ND ND ND ND ND ND ----NDug/L 05/26/10 --5 ------ND ND ND ND ND ND ND ----NDug/L 11/15/10 --5 ------ND ND ND ND ND ND ND ----NDug/L 05/09/11 --5 ------ND ND ND ND ND ND ND ----ND ug/L 11/14/11 --5 ------ND ND ND ND ND ND ND ----NDug/L 05/07/12 --5 ------ND ND ND ND ND Dry ND ----NDug/L 11/05/12 --5 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/13/13 --5 ------ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --5 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/14 --5 ------ND ND ND ND ND ND ND ND ND NDug/L 11/17/14 0.15 5 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/15 0.15 5 ------ND ND ND ND ND ND ND ND ND NDug/L 11/09/15 0.15 5 ------ND ND ND ND ND ND ND ND ND NDug/L 05/10/16 0.15 5 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/07/16 0.15 5 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/09/17 0.15 5 ------ND ND ND ND ND ND ND ND ND NDEthylbenzeneug/L 01/11/00 --2 ND --------ND --ND ND ND ------NC 2L = 600 ug/L ug/L 02/21/00 --2 ND ------------------------ EPA MCL = 700 ug/L ug/L 02/22/00 --2 ----------------ND ND ------ug/L 10/10/00 --5 ND --------ND --ND ND ND ------ug/L 07/12/01 --5 ND --------ND --ND ND ND ------ug/L 10/24/01 --5 ----------ND --ND --ND ------ ug/L 05/28/02 --5 ND --------ND --ND --ND ------ug/L 11/05/02 --5 ND --------ND --ND ND ND ------ug/L 05/29/03 --5 ND --------ND --ND ND ND ------ ug/L 11/05/03 --5 ND ----ND ND ND --ND ND ND ------ug/L 05/25/04 --5 ND ----ND ND ND --ND ND ND ------ug/L 11/23/04 --5 ND ----ND ND ND --ND ND ND ------ug/L 05/16/05 --5 ------ND ND ND --ND ND ND ------ ug/L 11/25/05 --5 ------ND ND ND --ND ND ND ------ug/L 05/24/06 --5 ------ND ND ND --ND 6.2 ND ----NDug/L 11/20/06 --5 ------ND ND ND --ND ND ND ----ND ug/L 05/22/07 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 11/13/07 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 05/29/08 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 11/17/08 --1 --ND --ND ND ND ND ND ND 0.44 J ----ND ug/L 05/26/09 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 11/10/09 --1 ------ND ND ND ND ND ND ND ----NDug/L 05/26/10 --1 ------ND ND ND ND ND ND ND ----ND ug/L 11/15/10 --1 ------ND ND ND ND ND ND ND ----ND ug/L 05/09/11 --1 ------ND ND ND ND ND ND ND ----NDug/L 11/14/11 --1 ------ND ND ND ND ND ND ND ----NDug/L 05/07/12 --1 ------ND ND ND ND ND Dry ND ----ND ug/L 11/05/12 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/13/13 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/14 --1 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/17/14 0.13 1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/15 0.13 1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/09/15 0.13 1 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/10/16 0.13 1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/07/16 0.13 1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/09/17 0.13 1 ------ND ND ND ND ND ND ND ND ND ND2-Butanone ug/L 01/11/00 --10 ND --------ND --ND ND ND ------ NC 2L = 4000 ug/L ug/L 02/21/00 --10 ND ------------------------No EPA MCL ug/L 02/22/00 --10 ----------------ND ND ------ug/L 10/10/00 --100 ND --------ND --ND ND ND ------ ug/L 07/12/01 --100 ND --------ND --ND ND ND ------ug/L 10/24/01 --100 ----------ND --ND --ND ------ug/L 05/28/02 --100 ND --------ND --ND --ND ------ug/L 11/05/02 --100 ND --------ND --ND ND ND ------ ug/L 05/29/03 --100 ND --------ND --ND ND ND ------ug/L 11/05/03 --100 ND ----ND ND ND --ND ND ND ------ug/L 05/25/04 --100 ND ----ND ND ND --ND ND ND ------ ug/L 11/23/04 --100 ND ----ND ND ND --ND ND ND ------ ug/L 05/16/05 --100 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --100 ------ND ND ND --ND ND ND ------ug/L 05/24/06 --100 ------ND ND ND --ND ND ND ----ND ug/L 11/20/06 --100 ------ND ND ND --ND ND 184 ----NDug/L 02/28/07 --100 ------------------ND ----NDug/L 05/22/07 --100 --ND --ND ND ND ND ND ND ND ----NDug/L 11/13/07 --100 --ND --ND ND ND ND ND ND ND ----ND ug/L 05/29/08 --100 --ND --ND ND ND ND ND ND ND ----NDug/L 11/17/08 --100 --ND --ND ND ND ND ND ND 28 J ----NDug/L 05/26/09 --100 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/10/09 --100 ------ND ND ND ND ND ND ND ----NDug/L 05/26/10 --100 ------ND ND ND ND ND ND ND ----NDug/L 11/15/10 --100 ------ND ND ND ND ND ND ND ----6.4 Jug/L 05/09/11 --100 ------ND ND ND ND ND ND ND ----ND ug/L 11/14/11 --100 ------ND ND ND ND ND ND ND ----NDug/L 05/07/12 --100 ------ND ND ND ND ND Dry ND ----NDug/L 11/05/12 --100 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/13/13 --100 ------ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --100 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/14 --100 ------ND ND ND ND ND ND ND ND ND NDug/L 11/17/14 1.3 100 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/15 1.3 100 ------ND ND ND ND ND ND ND ND ND NDug/L 11/09/15 1.3 100 -----ND ND ND ND ND ND ND ND ND NDug/L 05/10/16 1.3 100 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/07/16 1.3 100 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/09/17 1.3 100 ------ND ND ND ND ND ND ND ND ND ND July 2017 Page 7 of 8 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MDL MW-107S MW-108 SWSReportingLimit Upgradient TABLE 4 Summary of Groundwater Monitoring Results for MSW Wells Detected Constituents Sampson County Active MSW Landfill, Permit No. 82-02Sampson County, North Carolina Blanks Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 GGI Outfall 2GGI Outfall 1MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date 4-Methyl-2-pentanone ug/L 01/11/00 ----ND ND ------ND --ND ND ND ------ SWS GWS = 560 ug/L ug/L 02/21/00 ----ND ND ----------------------EPA MCL = 5 ug/L ug/L 02/22/00 --------------------ND ND ------ug/L 10/10/00 ----ND ND ------ND --ND ND ND ------ug/L 07/12/01 ----ND ND ------ND --ND ND ND ------ ug/L 10/24/01 --------------ND --ND --ND ------ug/L 05/28/02 ----ND ND ------ND --ND --ND ------ug/L 11/05/02 ----ND ND ------ND --ND ND ND ------ ug/L 05/29/03 ----ND ND ------ND --ND ND ND ------ug/L 11/05/03 ----ND ND --ND ND ND --ND ND ND ------ug/L 05/25/04 ----ND ND --ND ND ND --ND ND ND ------ug/L 11/23/04 ----ND ND --ND ND ND --ND ND ND ------ ug/L 05/16/05 ----------ND ND ND --ND ND ND ------ug/L 11/25/05 ----------ND ND ND --ND ND ND ------ug/L 05/24/06 --100 ------ND ND ND --ND ND ND ----ND ug/L 11/20/06 --100 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --100 --ND --ND ND ND ND ND ND ND ----NDug/L 11/13/07 --100 --ND --ND ND ND ND ND ND ND ----NDug/L 05/29/08 --100 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/17/08 --100 --ND --ND ND ND ND ND ND 1.7 J ----NDug/L 05/26/09 --100 --ND --ND ND ND ND ND ND ND ----NDug/L 11/10/09 --100 ------ND ND ND ND ND ND ND ----ND ug/L 05/26/10 --100 ------ND ND ND ND ND ND ND ----ND ug/L 11/15/10 --100 ------ND ND ND ND ND ND ND ----NDug/L 05/09/11 --100 ------ND ND ND ND ND ND ND ----NDug/L 11/14/11 --100 ------ND ND ND ND ND ND ND ----ND ug/L 05/07/12 --100 ------ND ND ND ND ND Dry ND ----NDug/L 11/05/12 --100 ------ND ND ND ND ND ND ND ND ND NDug/L 05/13/13 --100 ------ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --100 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/14 --100 ------ND ND ND ND ND ND ND ND ND NDug/L 11/17/14 1.1 100 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/15 1.1 100 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/09/15 1.1 100 -----ND ND ND ND ND ND ND ND ND NDug/L 05/10/16 1.1 100 ------ND ND ND ND ND ND ND ND ND NDug/L 11/07/16 1.1 100 ------ND ND ND ND ND ND ND ND ND NDug/L 05/09/17 1.1 100 ------ND ND ND ND ND ND ND ND ND ND Tetrachloroethene ug/L 01/11/00 --2 ND --------ND --ND ND ND ------NC 2L = 0.7 ug/L ug/L 02/21/00 --2 ND ------------------------EPA MCL = 5 ug/L ug/L 02/22/00 --2 ----------------ND ND ------ ug/L 10/10/00 --5 ND --------ND --ND ND ND ------ug/L 07/12/01 --5 ND --------ND --ND ND ND ------ug/L 10/24/01 --5 ----------ND --ND --ND ------ug/L 05/28/02 --5 ND --------ND --ND --ND ------ ug/L 11/05/02 --5 ND --------ND --ND ND ND ------ug/L 05/29/03 --5 ND --------ND --ND ND ND ------ug/L 11/05/03 --5 ND ----ND ND ND --ND ND ND ------ ug/L 05/25/04 --5 ND ----ND ND ND --ND ND ND ------ ug/L 11/23/04 --5 ND ----ND ND ND --ND ND ND ------ug/L 05/16/05 --5 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --5 ------ND ND ND --ND ND ND ------ ug/L 05/24/06 --5 ------ND ND ND --ND ND ND ----NDug/L 11/20/06 --5 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --1 --ND --ND ND ND ND ND 0.79 J ND ----NDug/L 11/13/07 --1 --ND --ND ND ND ND ND ND ND ----ND ug/L 05/29/08 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 11/17/08 --1 --ND --ND ND ND ND ND 0.49 J ND ----NDug/L 05/26/09 --1 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/10/09 --1 ------ND ND ND ND ND ND ND ----NDug/L 05/26/10 --1 ------ND ND ND ND ND ND ND ----NDug/L 11/15/10 --1 ------ND ND ND ND ND ND ND ----NDug/L 05/09/11 --1 ------ND ND ND ND ND ND ND ----ND ug/L 11/14/11 --1 ------ND ND ND ND ND ND ND ----NDug/L 05/07/12 --1 ------ND ND ND ND ND Dry ND ----ND ug/L 11/05/12 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/13/13 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --1 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/14 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/17/14 0.17 1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/15 0.17 1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/09/15 0.17 1 -----ND ND ND ND ND ND ND ND ND ND ug/L 05/10/16 0.17 1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/07/16 0.17 1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/09/17 0.17 1 ------ND ND ND ND ND ND ND ND ND ND Toluene ug/L 01/11/00 ----ND --------ND --ND ND ND ------NC 2L=1000 ug/L ug/L 02/21/00 ----ND ------------------------ug/L 02/22/00 --------------------ND ND ------ug/L 10/10/00 ----ND --------ND --ND ND ND ------ ug/L 07/12/01 ----ND --------ND --ND ND ND ------ug/L 10/24/01 --------------ND --ND --ND ------ug/L 05/28/02 ----ND --------ND --ND --ND ------ ug/L 11/05/02 ----ND --------ND --ND ND ND ------ug/L 05/29/03 ----ND --------ND --ND ND ND ------ug/L 11/05/03 ----ND ----ND ND ND --ND ND ND ------ug/L 05/25/04 ----ND ----ND ND ND --ND ND ND ------ ug/L 11/23/04 ----ND ----ND ND ND --ND ND ND ------ug/L 05/16/05 ----------ND ND ND --ND ND ND ------ug/L 11/25/05 ----------ND ND ND --ND ND ND ------ ug/L 05/24/06 --5 ------ND ND ND --ND ND ND ----ND ug/L 11/20/06 --5 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 11/13/07 --1 --ND --ND ND ND ND ND ND ND ----ND ug/L 05/29/08 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 11/17/08 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 05/26/09 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 11/10/09 --1 ------ND ND ND ND ND ND ND ----ND ug/L 05/26/10 --1 ------ND ND ND ND ND ND ND ----NDug/L 11/15/10 --1 ------ND ND ND ND ND ND ND ----NDug/L 05/09/11 --1 -----ND ND ND ND ND ND ND ----ND ug/L 11/14/11 --1 ------ND ND ND ND ND ND ND ----NDug/L 05/07/12 --1 ------ND ND ND ND ND Dry ND ----0.55 Jug/L 11/05/12 --1 -----ND ND ND ND ND ND ND ND ND NDug/L 05/13/13 --1 -----ND ND ND ND ND ND ND ND ND ND ug/L 11/11/13 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/14 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/17/14 0.14 1 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/15 0.14 1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/09/15 0.14 1 -----ND ND ND ND ND ND ND ND ND NDug/L 05/10/16 0.14 1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/07/16 0.14 1 ---ND ND ND ND ND ND ND ND ND ND ug/L 05/09/17 0.14 1 ------ND ND ND ND 1.9 ND ND ND ND ND(Verification Event)ug/L 06/23/17 0.14 1 --------------ND ----------Trichloroethene ug/L 01/11/00 --2 ND --------ND --ND ND ND ------ NC 2L = 3 ug/L ug/L 02/21/00 --2 ND ------------------------ EPA MCL = 5 ug/L ug/L 02/22/00 --2 ----------------ND ND ------ug/L 10/10/00 --5 ND --------ND --ND ND ND ------ug/L 07/12/01 --5 ND --------ND --ND ND ND ------ ug/L 10/24/01 --5 ----------ND --ND --ND ------ug/L 05/28/02 --5 ND --------ND --ND --ND ------ug/L 11/05/02 --5 ND --------ND --ND ND ND ------ug/L 05/29/03 --5 ND --------ND --ND ND ND ------ug/L 11/05/03 --5 ND ----ND ND ND --ND ND ND ------ug/L 05/25/04 --5 ND ----ND ND ND --ND ND ND ------ug/L 11/23/04 --5 ND ----ND ND ND --ND ND ND ------ug/L 05/16/05 --5 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --5 ------ND ND ND --ND ND ND ------ug/L 05/24/06 --5 ------ND ND ND --ND ND ND ----NDug/L 11/20/06 --5 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --1 --ND --ND ND ND ND ND 0.33 J ND ----NDug/L 11/13/07 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 05/29/08 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 11/17/08 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 05/26/09 --1 --ND --ND ND ND ND ND ND ND ----NDug/L 11/10/09 --1 ------ND ND ND ND ND ND ND ----NDug/L 05/26/10 --1 ------ND ND ND ND ND ND ND ----NDug/L 11/15/10 --1 ------ND ND ND ND ND ND ND ----NDug/L 05/09/11 --1 ------ND ND ND ND ND ND ND ----NDug/L 11/14/11 --1 ------ND ND ND ND ND ND ND ----NDug/L 05/07/12 --1 ------ND ND ND ND ND Dry ND ----NDug/L 11/05/12 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/13/13 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/12/14 --1 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/17/14 0.15 1 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/15 0.15 1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/09/15 0.15 1 -----ND ND ND ND ND ND ND ND ND ND ug/L 05/10/16 0.15 1 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/07/16 0.15 1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/09/17 0.15 1 ------ND ND ND ND ND ND ND ND ND ND July 2017 Page 8 of 8 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MDL MW-107S MW-108 SWSReportingLimit Upgradient TABLE 4 Summary of Groundwater Monitoring Results for MSW Wells Detected Constituents Sampson County Active MSW Landfill, Permit No. 82-02Sampson County, North Carolina Blanks Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 GGI Outfall 2GGI Outfall 1MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Vinyl chloride ug/L 01/11/00 --2 ND --------ND --ND ND ND ------NC 2L = 0.03 ug/L ug/L 02/21/00 --2 ND ------------------------ EPA MCL = 2 ug/L ug/L 02/22/00 --2 ----------------ND ND ------ ug/L 10/10/00 --10 ND --------ND --ND ND ND ------ug/L 07/12/01 --10 ND --------ND --ND ND ND ------ ug/L 10/24/01 --10 ----------ND --ND --ND ------ ug/L 05/28/02 --10 ND --------ND --ND --ND ------ug/L 11/05/02 --10 ND --------ND --ND ND ND ------ ug/L 05/29/03 --10 ND --------ND --ND ND ND ------ug/L 11/05/03 --10 ND ----ND ND ND --ND ND ND ------ ug/L 05/25/04 --10 ND ----ND ND ND --ND ND ND ------ ug/L 11/23/04 --10 ND ----ND ND ND --ND ND ND ------ug/L 05/16/05 --10 ------ND ND ND --ND ND ND ------ ug/L 11/25/05 --10 ------ND ND ND --ND ND ND ------ ug/L 05/24/06 --10 ------ND ND ND --ND ND ND ----NDug/L 11/20/06 --10 ------ND ND ND --ND ND ND ----ND ug/L 05/22/07 --1 --ND --ND ND ND --ND 1.6 ND ----ND ug/L 08/07/07 --1 ----------------ND ------NDug/L 11/13/07 --1 --ND --ND ND ND ND ND 0.74 J ND ----ND ug/L 05/29/08 --1 --ND --ND ND ND ND ND 0.46 J ND ----ND ug/L 11/17/08 --1 --ND --ND ND ND ND ND ND ND ----ND ug/L 05/26/09 --1 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/10/09 --1 ------ND ND ND ND ND ND ND ----NDug/L 05/26/10 --1 ------ND ND ND ND ND ND ND ----ND ug/L 11/15/10 --1 ------ND ND ND ND ND ND ND ----ND ug/L 05/09/11 --1 ------ND ND ND ND ND ND ND ----NDug/L 11/14/11 --1 ------ND ND ND ND ND ND ND ----ND ug/L 05/07/12 --1 ------ND ND ND ND ND Dry ND ----ND ug/L 11/05/12 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/13/13 --1 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/11/13 --1 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/14 --1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/17/14 0.32 1 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/15 0.32 1 ------ND ND ND ND ND ND ND ND ND NDug/L 11/09/15 0.32 1 -----ND ND ND ND ND ND ND ND ND ND ug/L 05/10/16 0.32 1 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/07/16 0.32 1 ------ND ND ND ND ND ND ND ND ND NDug/L 05/09/17 0.32 1 ------ND ND ND ND ND ND ND ND ND ND Xylenes (Total)ug/L 01/11/00 --6 ND --------ND --ND ND ND ------ NC 2L = 500 ug/L ug/L 02/21/00 --6 ND ------------------------EPA MCL = 10000 ug/L ug/L 02/22/00 --6 ----------------ND ND ------ ug/L 10/10/00 --5 ND --------ND --ND ND ND ------ ug/L 07/12/01 --5 ND --------ND --ND ND ND ------ug/L 10/24/01 --5 ----------ND --ND --ND ------ ug/L 05/28/02 --5 ND --------ND --ND --ND ------ ug/L 11/05/02 --5 ND --------ND --ND ND ND ------ ug/L 05/29/03 --5 ND --------ND --ND ND ND ------ ug/L 11/05/03 --5 ND ----ND ND ND --ND ND ND ------ug/L 05/25/04 --5 ND ----ND ND ND --ND ND ND ------ ug/L 11/23/04 --5 ND ----ND ND ND --ND ND ND ------ ug/L 05/16/05 --5 ------ND ND ND --ND ND ND ------ug/L 11/25/05 --5 ------ND ND ND --ND 18.2 ND ------ ug/L 05/24/06 --5 ------ND ND ND --ND 18.1 ND ----ND ug/L 11/20/06 --5 ------ND ND ND --ND ND ND ----NDug/L 05/22/07 --5 --ND --ND ND ND ND ND 5.7 ND ----ND ug/L 08/07/07 --5 ----------------2.7 J ------ND ug/L 11/13/07 --5 --ND --ND ND ND ND ND 2.2 J ND ----NDug/L 05/29/08 --5 --ND --ND ND ND ND ND 2.2 J ND ----ND ug/L 11/17/08 --5 --ND --ND ND ND ND ND ND 0.48 J ----NDug/L 05/26/09 --5 --ND --ND ND ND ND ND ND ND ----ND ug/L 11/10/09 --5 ------ND ND ND ND ND ND ND ----ND ug/L 05/26/10 --5 ------ND ND ND ND ND ND ND ----NDug/L 11/15/10 --5 ------ND ND ND ND ND ND ND ----ND ug/L 05/09/11 --5 ------ND ND ND ND ND ND ND ----ND ug/L 11/14/11 --5 ------ND ND ND ND ND ND ND ----NDug/L 05/07/12 --5 ------ND ND ND ND ND Dry ND ----ND ug/L 11/05/12 --5 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/13/13 --5 ------ND ND ND ND ND ND ND ND ND NDug/L 11/11/13 --5 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/14 --5 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/17/14 0.45 5 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/12/15 0.45 5 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/09/15 0.45 5 -----ND ND ND ND ND ND ND ND ND NDug/L 05/10/16 0.45 5 ------ND ND ND ND ND ND ND ND ND ND ug/L 11/07/16 0.45 5 ------ND ND ND ND ND ND ND ND ND ND ug/L 05/09/17 0.45 5 ------ND ND ND ND ND ND ND ND ND ND Notes:ug/L =micrograms per literND =Not detected at the stated reporting limit J =Estimated value B =Blank-qualified data-- =no data# =EPA Action Level* = EPA Secondary MCL Bold only =Concentration above current NC 2L Groundwater Standard or NC SWS Groundwater Protection Standard Shaded and Bold =Concentration above current NC 2L Groundwater Standard or NC SWS Groundwater Protection Standard and EPA MCLGGI = Gravity Groundwater Intercept Blanks =field, trip and method blanksStandards =NC 2L Groundwater Standards or North Carolina Solid Waste Section Groundwater Protection Standards SWS Reporting Limit =NCPQL or lab-specific reporting limit prior to 2007 and NCSWSL starting in 01/18/07 SWS GPS =Solid Waste Section Groundwater Protection Standard EPA MCL =US Environmental Protection Agency Maximum Contaminant LevelNC 2L = North Carolina 2L Groundwater Standard 1) MW-100A and MW-105A are replacement wells for MW-100 and MW-105, respectively. MW-100B replaced MW-100A prior to the May 2010 sampling event. 2) Data prior to 2/28/07 provided by Richardson, Smith, Gardner and Associates. 3) Additions to GGI-1 were not constrtucted by the May 2010 compliance event. Golder returned to sample GGI-1 on 6-29-10 and the sampling point was dry. 4) Results from laboratory re-analyses are reported in parentheses.5) The following dilutions were noted for the May 2017 event: MW-107S, MW-108, and GGI Outfall 1: Thallium (10x) July 2017 Page 1 of 6 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx pH (field)S.U.05/28/02 4.1 --------4.4 --4.6 ----4.5 ---- S.U.11/05/02 4.3 --------4.5 --4.6 4.6 --4.7 ---- S.U.05/29/03 4.4 --------4.3 --3.9 4.1 --4.6 ---- S.U.11/05/03 ------4.5 4.5 ---------------- S.U.05/24/06 ------4.9 4.5 4.4 --4.9 4.3 --4.8 ---- S.U.11/20/06 ------4.8 4.8 4.3 --4.8 3.6 --4.5 ---- S.U.05/22/07 --5.55 --4.40 4.18 3.91 4.56 4.10 3.82 --4.40 ---- (Verification Event)S.U.08/07/07 ----------------3.50 -------- S.U.11/13/07 --5.80 --4.26 4.55 4.21 4.73 4.78 3.70 4.38 4.26 ---- (Verification Event)S.U.01/09/08 --------------4.54 ---------- S.U.05/29/08 --4.92 --4.23 4.22 3.72 4.53 4.74 3.40 4.14 4.17 ---- S.U.11/17/08 --5.10 --4.16 4.04 3.68 3.79 5.29 3.24 3.90 5.11 ---- (Verification Event)S.U.02/17/09 --------------------4.64 ---- S.U.05/26/09 --5.01 --4.69 4.55 3.93 4.48 5.47 3.62 4.09 4.75 ---- (Verification Event)S.U.07/23/09 ----------3.94 -------------- S.U.11/10/09 --4.80 --4.56 4.47 3.77 4.28 4.08 3.46 3.72 4.35 ---- (Verification Event)S.U.01/18/10 --------------3.43 -------- S.U.05/26/10 ----6.06 3.34 4.07 3.76 4.06 5.55 3.34 3.56 4.06 ---- S.U.11/15/10 ----7.11 4.92 4.75 3.86 4.20 6.32 3.50 3.82 4.31 ---- (Verification Event)S.U.12/21/10 --------------------4.38 ---- S.U.05/09/11 ----4.54 4.08 3.81 3.63 3.54 3.66 2.88 3.18 3.39 ---- S.U.11/14/11 ----5.13 5.16 5.20 3.90 4.64 4.19 3.64 4.01 4.25 ---- (Verification Event)S.U.01/17/12 -------------------------- S.U.05/07/12 ----5.53 4.02 3.36 3.69 3.67 3.60 Dry 3.22 3.89 ---- (Verification Event)S.U.07/11/12 -------------------------- S.U.11/05/12 ----5.38 4.29 3.89 4.04 4.44 4.11 3.09 --4.31 4.04 4.77 (Verification Event)S.U.01/10/13 ----------------3.31 -------- S.U.05/13/13 ----6.61 4.56 4.35 4.35 3.96 5.70 3.46 --4.29 4.04 5.48 S.U.11/11/13 ----5.75 4.76 4.88 4.13 4.61 4.18 3.60 --4.35 4.33 4.68 S.U.05/12/14 ----6.42 5.00 4.87 4.43 4.67 4.31 3.86 --4.43 5.72 4.43 S.U.11/17/14 ----5.33 4.17 4.26 3.64 4.17 3.45 3.42 --3.69 6.32 5.06 S.U.05/12/15 ----3.81 4.20 3.65 4.17 3.40 4.15 4.67 --4.09 6.30 5.11 S.U.11/09/15 ----4.84 3.48 3.71 3.76 3.92 4.62 3.54 --3.84 6.77 3.45 (Verification Event)S.U.12/30/15 ----------------------7.14 -- S.U.05/10/16 ----5.28 4.09 4.08 3.94 4.09 4.42 3.60 --4.04 4.31 4.62 (Verification Event)S.U.07/07/16 ----------------------6.69 -- S.U.11/07/16 ----5.76 5.09 4.30 4.28 4.68 4.52 3.94 --4.33 4.98 5.27 S.U.05/09/17 ----5.85 4.84 3.90 3.87 3.96 4.40 3.20 --3.91 3.89 4.99 (Verification Event)S.U.06/23/17 --------------4.19 ---------- GGI Outfall 1 GGI Outfall 2MW-107S MW-107D TABLE 5 Summary of Field Parameters for MSW Wells Sampson County Active MSW Landfill, Permit No. 82-02 Sampson County, North Carolina MW-108 Upgradient Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date July 2017 Page 2 of 6 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx GGI Outfall 1 GGI Outfall 2MW-107S MW-107D TABLE 5 Summary of Field Parameters for MSW Wells Sampson County Active MSW Landfill, Permit No. 82-02 Sampson County, North Carolina MW-108 Upgradient Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Specific Conductance (field)uS/cm 05/28/02 160 --------55 --26 ----38 ---- uS/cm 11/05/02 164 --------97 --31 53 --56 ---- uS/cm 05/29/03 -------------------------- uS/cm 11/05/03 ------54 44 ---------------- uS/cm 05/24/06 ------21 20 183 --24 271 --42 ---- uS/cm 11/20/06 ------33 25 148 --34 1142 --315 ---- uS/cm 05/22/07 --450 --20 11 270 300 14 685 --161 ---- (Verification Event)uS/cm 08/07/07 ----------------529 -------- uS/cm 11/13/07 --495 --29 29 220 65 54 777 226 538 ---- (Verification Event)uS/cm 01/09/08 --------------57 ---------- uS/cm 05/29/08 --213 --39 25 660 56 44 500 169 499 ---- uS/cm 11/17/08 --193 --81 38 299 50 62 769 157 1020 ---- (Verification Event)uS/cm 02/17/09 --------------------524 ---- uS/cm 05/26/09 --228 --15 26 437 53 41 648 222 676 ---- (Verification Event)uS/cm 07/23/09 ----------578 -------------- uS/cm 11/10/09 --177 --18 27 492 75 45 1265 329 422 ---- (Verification Event)uS/cm 01/18/10 ----------------1057 -------- uS/cm 05/26/10 ----524 16 22 675 94 85 1123 452 508 ---- uS/cm 11/15/10 ----385 20 22 581 215 172 1346 606 590 ---- (Verification Event)uS/cm 11/15/10 --------------------597 ---- uS/cm 05/09/11 ----423 21 23 190 118 67 1201 709 599 ---- uS/cm 11/14/11 ----313 18 17 636 83 46 980 584 392 ---- (Verification Event)uS/cm 01/17/12 -------------------------- uS/cm 05/07/12 ----356 17 17 726 83 95 Dry 645 685 ---- (Verification Event)uS/cm 07/11/12 -------------------------- uS/cm 11/05/12 ----257 21 19 441 78 58 1339 --508 332 123 (Verification Event)uS/cm 01/10/13 ----------------640 -------- uS/cm 05/13/13 ----353 19 18 480 72 69 452 --363 337 245 uS/cm 11/11/13 ----473 93 83 389 194 106 1019 --351 303 164 uS/cm 05/12/14 ----1018 61 46 402 106 86 348 --525 479 259 uS/cm 11/17/14 ----493 27 24 336 115 62 866 --547 498 261 uS/cm 05/12/15 ----371 22 18 169 73 38 466 --291 493 346 uS/cm 11/09/15 ----268 23 20 188 125 44 444 --757 1175 50 (Verification Event)uS/cm 12/30/15 ----------------------1465 -- uS/cm 05/10/16 ----512.3 19 30 281 99 41 83 --760 1010 110 (Verification Event)uS/cm 07/07/16 ----------------------480 -- uS/cm 11/07/16 ----755 29 22 180 81 30 754 --330 503 146 uS/cm 05/09/17 ----1103 31 21 168 82 34 445 --363 972 122 (Verification Event)uS/cm 06/23/17 --------------34 ---------- July 2017 Page 3 of 6 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx GGI Outfall 1 GGI Outfall 2MW-107S MW-107D TABLE 5 Summary of Field Parameters for MSW Wells Sampson County Active MSW Landfill, Permit No. 82-02 Sampson County, North Carolina MW-108 Upgradient Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Temperature (field)Celsius 05/28/02 19.00 --------22.00 --20.00 ----20.00 ---- Celsius 11/05/02 18.00 --------21.00 --21.00 22.00 --21.00 ---- Celsius 05/29/03 18.00 --------18.00 --17.00 19.00 --19.00 ---- Celsius 11/05/03 ------22.00 20.00 ---------------- Celsius 05/24/06 ------17.00 22.00 21.00 --20.00 21.00 --25.00 ---- Celsius 11/20/06 ------19.00 18.00 19.00 --19.00 20.00 --21.00 ---- Celsius 05/22/07 --22.71 --18.84 17.90 18.11 17.22 17.16 19.88 --21.98 ---- (Verification Event)Celsius 08/07/07 ----------------22.39 -------- Celsius 11/13/07 --19.88 --22.07 20.98 22.33 20.09 21.70 27.22 22.71 23.85 ---- (Verification Event)Celsius 01/09/08 --------------17.93 ---------- Celsius 05/29/08 --18.88 --18.54 18.32 19.23 17.69 16.83 23.83 21.09 21.35 ---- Celsius 11/17/08 --16.95 --21.22 18.68 21.29 19.45 19.23 21.13 19.98 22.48 ---- (Verification Event)Celsius 02/17/09 --------------------21.00 ---- Celsius 05/26/09 --18.61 --19.10 18.14 19.84 18.05 19.20 20.82 20.10 22.36 ---- (Verification Event)Celsius 07/23/09 ----------26.46 -------------- Celsius 11/10/09 --18.99 --22.02 20.64 21.38 20.35 21.74 20.74 21.96 24.02 ---- (Verification Event)Celsius 01/18/10 --------------18.49 -------- Celsius 05/26/10 ----18.64 17.62 18.76 20.16 17.41 19.25 20.92 19.90 22.14 ---- Celsius 11/15/10 ----20.47 22.64 18.94 21.85 20.02 21.10 21.17 22.92 24.23 ---- (Verification Event)Celsius 12/21/10 --------------------21.18 ---- Celsius 05/09/11 ----16.59 20.26 17.36 19.16 17.73 18.66 21.48 19.78 21.57 ---- Celsius 11/14/11 ----19.48 23.41 20.1 21.87 19.93 22.19 20.69 21.95 24.55 ---- (Verification Event)Celsius 01/17/12 -------------------------- Celsius 05/07/12 ----18.70 20.37 18.34 19..51 17.51 19.48 Dry 22.37 23.52 ---- (Verification Event)Celsius 07/11/12 -------------------------- Celsius 11/05/12 ----18.20 22.53 19.91 22.33 18.52 20.82 18.92 --23.57 20.79 21.56 (Verification Event)Celsius 01/10/13 ----------------19.20 -------- Celsius 05/13/13 ----19.26 21.02 20.45 20.52 16.20 21.53 14.84 --21.22 20.56 21.94 Celsius 11/11/13 ----20.30 22.80 20.70 24.30 19.10 21.60 18.70 --24.00 21.70 22.50 Celsius 05/12/14 ----21.00 20.10 19.40 20.40 17.00 21.00 16..2 --21.50 27.70 24.30 Celsius 11/17/14 ----20.30 21.10 20.10 22.70 15.30 21.10 17.40 --23.40 8.80 6.60 Celsius 05/12/15 ----19.70 18.80 18.80 18.60 19.30 17.10 17.20 --18.90 24.00 20.10 Celsius 11/09/15 ----19.30 22.10 19.90 21.90 18.30 21.20 21.20 --23.80 18.50 16.90 (Verification Event)Celsius 12/30/15 ----------------------22.10 --Celsius 05/10/16 ----20.10 21.50 19.30 21.00 18.40 21.50 24.00 --24.40 20.30 19.40(Verification Event)Celsius 07/07/16 ----------------------29.8 --Celsius 11/07/16 ----20.55 23.54 20.33 24.03 17.06 22.55 19.36 --25.16 15.72 19.80Celsius05/09/17 ----20.5 16.8 22.2 20.7 16.0 20.4 21.5 --21.8 15.9 20.2(Verification Event)Celsius 06/23/17 --------------23.5 ---------- July 2017 Page 4 of 6 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx GGI Outfall 1 GGI Outfall 2MW-107S MW-107D TABLE 5 Summary of Field Parameters for MSW Wells Sampson County Active MSW Landfill, Permit No. 82-02 Sampson County, North Carolina MW-108 Upgradient Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Turbidity (field)NTU 05/22/07 --0.00 --32.0 20.2 17.0 61.4 68.1 0.00 --113 ---- (Verification Event)NTU 08/07/07 ---------------->1000 -------- NTU 11/13/07 --133 --45.5 16.7 44.8 75.3 38.7 271 39.4 32.2 ---- (Verification Event)NTU 01/09/08 --------------20.2 ---------- NTU 05/29/08 --197 --7.80 8.56 8.66 99.1 61.0 9.36 6.88 5.49 ---- NTU 11/17/08 --36.9 --28.1 2.31 25.6 7.91 8.26 11.6 1.10 6.86 ---- (Verification Event)NTU 02/17/09 --------------------1.27 ---- NTU 05/26/09 --18.9 --7.61 41.7 45.1 30.3 49.2 7.65 3.96 7.62 ---- (Verification Event)NTU 07/23/09 ----------19.6 -------------- NTU 11/10/09 --34.6 --97.0 17.7 5.13 1.94 73.0 54.10 1.37 4.10 ---- (Verification Event)NTU 01/18/10 ----------------16.4 -------- NTU 05/26/10 ----16.4 9.16 3.29 19.5 0.47 9.94 19.5 1.76 1.10 ---- NTU 11/15/10 ----3.36 16.2 3.05 2.35 1.32 18.1 41.3 1.62 1.92 ---- (Verification Event)NTU 12/21/10 --------------------10.4 ---- NTU 05/09/11 ----1.75 10.8 3.39 4.83 0.42 6.05 12.7 1.03 0.69 ---- NTU 11/14/11 ----18.1 8.32 26.7 5.82 3.77 16.0 32.6 2.94 1.23 ---- NTU 01/17/12 -------------------------- NTU 05/07/12 ----4.58 77.4 16.3 6.44 2.46 227 Dry 2.60 4.35 ---- (Verification Event)NTU 07/11/12 -------------------------- NTU 11/05/12 ----12.1 2.22 6.49 3.57 11.6 88.1 23.7 --2.14 7.36 1.21 (Verification Event)NTU 01/10/13 ----------------214 -------- NTU 05/13/13 ----4.03 6.35 2.85 6.14 4.38 26.2 3.56 --1.21 1.40 3.31 NTU 11/11/13 ----3.82 4.04 5.00 12.2 16.4 12.0 21.0 --10.5 2.33 1.85 NTU 05/12/14 ----3.74 7.26 5.23 6.61 92.5 8.66 4.63 --3.18 7.41 4.56 NTU 11/17/14 ----1.38 9.21 2.22 5.22 51.1 31.0 13.6 --6.37 13.6 7.42 NTU 05/12/15 ----14.6 14.1 2.04 3.88 24.0 6.4 20.9 --0.96 46.8 8.72 NTU 11/09/15 ----5.96 7.57 1.99 5.68 30.8 29.8 47.8 --1.73 58.3 64.6 (Verification Event)NTU 12/30/15 ----------------------70.5 -- NTU 05/10/16 ----5.14 8.20 7.20 9.98 12.3 52.1 234 --4.36 8.75 2.34 (Verification Event)NTU 07/07/16 ----------------------228 -- NTU 11/07/16 ----3.43 4.89 7.77 2.34 3.30 22.1 251 --1.06 5.73 83.4 NTU 05/09/17 ----2.58 38.2 9.77 0.00 2.02 19.6 263 --2.70 17.1 4.63 (Verification Event)NTU 06/23/17 --------------7.28 ---------- July 2017 Page 5 of 6 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx GGI Outfall 1 GGI Outfall 2MW-107S MW-107D TABLE 5 Summary of Field Parameters for MSW Wells Sampson County Active MSW Landfill, Permit No. 82-02 Sampson County, North Carolina MW-108 Upgradient Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date ORP (field)millivolts 05/22/07 ------332 350 349 229 235 ----66.0 ---- millivolts 11/13/07 ------317 333 404 266 312 351 322 279 ---- (Verification Event)millivolts 01/09/08 --------------150 ---------- millivolts 05/29/08 ------303 317 404 186 55.0 308 280 187 ---- millivolts 11/17/08 ------314 311 351 241 91.0 358 310.5 -60.3 ---- (Verification Event)millivolts 02/17/09 --------------------50.7 ---- millivolts 05/26/09 ------202 220 312 218 143 331 278 61.5 ---- (Verification Event)millivolts 07/23/09 ----------576 -------------- millivolts 11/10/09 ------252 261 331 253 278 299 322 228 ---- (Verification Event)millivolts 01/18/10 --------------313 -------- millivolts 05/26/10 ------241 217 263 215 43.6 298 273 232 ---- millivolts 11/15/10 ------243 255 367 340 -19.0 341 312 261 ---- (Verification Event)millivolts 12/21/10 --------------------212 ---- millivolts 05/09/11 ------237 255 230 231 242 315 267 266 ---- millivolts 11/14/11 ------98.9 91.7 169 110 118 374 239 178 ---- millivolts 05/07/12 ------243 271 257 223 161 Dry 290 225 ---- (Verification Event)millivolts 07/11/12 -------------------------- millivolts 11/05/12 ----10.8 149 166 153 99.4 119 ----101 225 214 millivolts 05/13/13 ----86.8 127 139 132 113 -17.0 ----102 130 93.4 millivolts 11/11/13 ----266 342 332 393 282 134 ----359 402 353 millivolts 05/12/14 ----181 315 337 405 281 410 ----419 288 362 millivolts 11/17/14 ----194 160 199 258 298 267 ----316 156 83.5 millivolts 05/12/15 ----156 196 178 165 188 157 149 --177 74.5 163 millivolts 11/09/15 ----409 541 537 467 364 43.9 380 --400 133 402 (Verification Event)millivolts 12/30/15 ----------------------131 -- millivolts 05/10/16 ----270 352 369 390 278 159 436 --350 --242 millivolts 05/10/16 -----164 24.2 35.7 29.2 -39.1 -89.4 13.1 ---63.4 27.5 -45.9 millivolts 05/09/17 ----308 --374 447 372 306 451 --356 472 255 (Verification Event)millivolts 06/23/17 --------------197 ---------- July 2017 Page 6 of 6 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx GGI Outfall 1 GGI Outfall 2MW-107S MW-107D TABLE 5 Summary of Field Parameters for MSW Wells Sampson County Active MSW Landfill, Permit No. 82-02 Sampson County, North Carolina MW-108 Upgradient Downgradient MW-100 MW-100A MW-100B MW-102A MW-103A MW-104 MW-105A MW-106 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Dissolved Oxygen (field)mg/L 05/22/07 ------3.90 8.80 1.50 2.20 4.50 ----0.40 ---- mg/L 11/13/07 ------7.91 8.30 1.60 4.05 4.68 2.49 1.06 0.78 ---- (Verification Event)mg/L 01/09/08 --------------2.64 ---------- mg/L 05/29/08 ------6.97 9.23 1.44 0.30 1.01 0.91 0.37 1.99 ---- mg/L 11/17/08 ------8.21 8.14 10.09 2.83 2.80 4.18 1.62 10.34 ---- (Verification Event)mg/L 02/17/09 --------------------0.39 ---- mg/L 05/26/09 ------9.23 8.90 4.03 0.84 3.50 1.90 0.66 1.46 ---- (Verification Event)mg/L 07/23/09 ----------1.81 -------------- mg/L 11/10/09 ------8.40 8.58 2.85 2.72 4.57 0.87 0.55 0.79 ---- (Verification Event)mg/L 01/18/10 --------------1.35 -------- mg/L 05/26/10 ------8.34 7.91 2.39 0.82 1.27 1.04 0.60 0.99 ---- mg/L 11/15/10 ------7.40 8.72 2.02 1.03 1.66 2.84 1.09 3.04 ---- (Verification Event)mg/L 12/21/10 --------------------1.74 ---- mg/L 05/09/11 ------7.48 8.02 6.18 0.61 5.00 4.46 0.63 0.71 ---- mg/L 11/14/11 ------7.66 7.83 4.98 0.99 3.42 3.16 2.70 1.41 ---- mg/L 05/07/12 ------8.87 8.51 6.48 0.80 4.19 Dry 2.14 1.73 ---- (Verification Event)mg/L 07/11/12 -------------------------- mg/L 11/05/12 ----0.49 6.84 7.06 3.45 1.09 2.76 ----1.53 5.39 4.38 mg/L 05/13/13 ----0.49 7.08 7.44 4.88 0.37 2.13 ----1.47 6.28 2.93 mg/L 11/11/13 ----0.52 7.26 8.04 3.59 1.21 2.72 ----1.35 5.41 3.41 mg/L 05/12/14 ----1.02 8.25 9.01 5.89 0.62 5.46 ----1.27 5.50 2.03 mg/L 11/17/14 ----0.60 7.76 7.19 2.64 0.70 4.97 ----1.72 6.26 7.29 mg/L 05/12/15 ----0.69 6.64 7.13 5.21 0.54 3.03 2.81 --0.69 4.82 1.59 mg/L 11/09/15 ----1.93 7.61 7.43 4.82 0.65 1.32 3.56 --0.64 4.82 6.49 (Verification Event)mg/L 12/30/15 ----------------------4.70 -- mg/L 05/10/16 ----1.54 7.04 7.50 3.17 0.55 1.25 4.11 --1.80 --6.15 mg/L 11/07/16 ----0.27 4.68 5.90 1.08 0.38 1.11 3.12 --0.63 6.44 3.65 mg/L 05/09/17 ----2.84 --7.44 5.49 0.25 1.76 5.71 --2.71 6.22 4.46 (Verification Event)mg/L 06/23/17 --------------2.32 ---------- Notes:mg/L =milligrams per liter S.U. =Standard Units NTU =Nephelometric Turbidity Units ND =Not detected at the stated reporting limit uS/cm=microsiemens per centimeter -- =no data GGI = Gravity Groundwater Intercept July 2017 Page 1 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN Antimony ug/L 10/08/96 --5 ND ND ND -------- SWS GPS = 1 ug/L ug/L 02/18/97 --5 ND ND ND -------- EPA MCL = 6 ug/L ug/L 08/29/97 --30 ND ND ND --------ug/L 02/23/98 --10 ND ND ND -------- ug/L 08/24/98 --10 ND ND ND --------ug/L 02/22/99 --10 ND ND ND -------- ug/L 08/23/99 --10 ND ND ND -------- ug/L 02/21/00 --10 ND ND ND --------ug/L 07/12/01 --30 ND ND ND ND ND ND -- ug/L 10/24/01 --30 ND ND ND ND ND ND --ug/L 05/28/02 --30 -------------- ug/L 11/05/02 --30 -------------- ug/L 05/29/03 --30 --------------ug/L 11/05/03 --30 -------------- ug/L 05/25/04 --30 --------------ug/L 11/23/04 --30 -------------- ug/L 05/16/05 --30 -------------- ug/L 11/25/05 --30 --------------ug/L 05/24/06 --30 ------------ND ug/L 11/20/06 --30 ------------NDug/L 05/22/07 --6 0.63 J ND ND ND ND ND ND ug/L 11/14/07 --6 ND ND ND ND ND ND ND ug/L 05/29/08 --6 ND ND ND ND ND ND NDug/L 11/17/08 --6 ND ND ND ND ND ND ND ug/L 05/27/09 --6 ND ND ND ND ND ND NDug/L 11/11/09 --6 0.661 J 0.474 J 0.251 B ND 0.302 B ND 0.0730 J ug/L 05/26/10 --6 ND ND ND ND ND ND ND ug/L 11/15/10 --6 ND ND ND ND ND ND NDug/L 05/09/11 --6 ND ND ND ND ND ND ND ug/L 11/14/11 --6 ND ND ND ND ND ND NDug/L 05/08/12 --6 0.382 J ND 1.15 J ND 0.390 J ND ND ug/L 11/05/12 --6 ND ND ND ND ND ND ND ug/L 05/14/13 --6 ND ND ND ND ND ND NDug/L 11/12/13 --6 ND ND ND ND ND ND ND ug/L 05/13/14 --6 ND ND ND ND ND ND NDug/L 11/17/14 0.220 6 ND 0.762 J ND ND ND ND ND ug/L 05/12/15 0.220 6 ND ND ND ND ND ND ND ug/L 11/09/15 0.220 6 ND ND ND ND ND ND NDug/L 05/10/16 0.220 6 ND 0.265 J ND ND ND ND ND ug/L 11/07/16 0.220 6 ND ND ND ND ND ND NDug/L 05/09/17 0.220 6 ND ND ND ND ND ND ND SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date July 2017 Page 2 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Arsenic ug/L 10/08/96 --5 ND ND ND --------NC 2L = 10 ug/L ug/L 02/18/97 --5 ND ND ND -------- EPA MCL = 10 ug/L ug/L 08/29/97 --10 ND ND ND --------ug/L 02/23/98 --5 ND ND ND -------- ug/L 08/24/98 --5 ND 6.18 13 -------- ug/L 02/22/99 --5 ND ND 9.09 --------ug/L 08/23/99 --5 ND 9.11 16 -------- ug/L 02/21/00 --5 ND 9.94 9.64 --------ug/L 10/10/00 --10 ND ND 13 ND ND ND -- ug/L 07/12/01 --10 ND ND ND ND ND ND -- ug/L 10/24/01 --10 ND ND ND ND ND ND --ug/L 05/28/02 --10 ND ND ND ND ND ND -- ug/L 11/05/02 --10 ND ND ND ND ND ND --ug/L 05/29/03 --10 ND ND ND ND ND ND -- ug/L 11/05/03 --10 -------------- ug/L 05/25/04 --10 ND 12 ND ND ND ND --ug/L 11/23/04 --10 ND ND ND ND ND ND -- ug/L 05/16/05 --10 ND ND ND ND ND ND --ug/L 11/25/05 --10 ND ND ND ND ND ND -- ug/L 05/24/06 --10 ND ND ND ND ND ND ND ug/L 11/20/06 --10 ND 14 ND 10 ND ND NDug/L 05/22/07 --10 ND ND ND ND ND ND 2.2 J ug/L 11/14/07 --10 ND ND ND ND ND ND NDug/L 05/29/08 --10 ND ND 4.8 B ND 3.2 B 2.0 B 3.2 J ug/L 11/17/08 --10 ND ND ND ND ND ND ND ug/L 05/27/09 --10 3.2 J 6.2 J 9.2 J ND ND ND NDug/L 11/11/09 --10 ND ND ND ND ND ND ND ug/L 05/26/10 --10 ND 3.76 J 7.44 J ND ND ND NDug/L 11/15/10 --10 ND 3.25 B ND ND ND ND 3.98 J ug/L 05/09/11 --10 ND ND 7.77 J 3.11 J ND ND ND ug/L 11/14/11 --10 ND ND ND ND 3.67 J ND NDug/L 05/08/12 --10 ND ND ND ND ND ND ND ug/L 11/05/12 --10 3.57 B 3.43 B ND 3.18 B 4.00 B ND 4.48 Jug/L 05/14/13 --10 ND ND ND ND ND ND ND ug/L 11/12/13 --10 ND ND ND ND ND ND ND ug/L 05/13/14 --10 ND ND ND ND ND ND NDug/L 11/17/14 5.40 10 ND ND ND ND ND ND ND ug/L 05/12/15 5.40 10 ND ND ND ND ND ND NDug/L 11/09/15 5.40 10 ND ND 10.1 ND ND ND ND ug/L 05/10/16 5.40 10 ND ND ND ND ND ND NDug/L 11/07/16 6.80 10 ND 8.84 J 7.48 J ND ND ND ND ug/L 05/09/17 6.80 10 ND ND 7.53 J ND ND ND ND July 2017 Page 3 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Barium ug/L 10/08/96 ----31 28 25 --------NC 2L = 700 ug/L ug/L 02/18/97 --500 26 71 23 -------- EPA MCL = 2000 ug/L ug/L 08/29/97 --500 ND ND ND --------ug/L 02/23/98 ----47 165 180 -------- ug/L 08/24/98 ----34.3 178 159 -------- ug/L 02/22/99 ----37.9 145 162 --------ug/L 08/23/99 ----64.1 148 201 -------- ug/L 02/21/00 ----28.6 157 195 --------ug/L 10/10/00 --500 ND ND ND ND ND ND -- ug/L 07/12/01 --500 ND ND ND ND ND ND -- ug/L 10/24/01 --500 ND ND ND ND ND ND --ug/L 05/28/02 --500 ND ND ND ND ND ND -- ug/L 11/05/02 --500 ND ND ND ND ND ND --ug/L 05/29/03 --500 ND ND ND ND ND ND -- ug/L 11/05/03 --500 -------------- ug/L 05/25/04 --500 ND ND ND ND ND ND --ug/L 11/23/04 --500 ND ND ND ND ND ND -- ug/L 05/16/05 --500 ND ND ND ND ND ND --ug/L 11/25/05 --500 ND ND ND ND ND ND -- ug/L 05/24/06 --500 ND ND ND ND ND ND ND ug/L 11/20/06 --500 ND ND ND ND ND ND NDug/L 05/22/07 --100 105 90.2 J 151 80.5 J 69.7 J 36.7 J 0.3 J ug/L 11/14/07 --100 253 101 95.2 J 120 73.3 J 33.1 J 0.20 Jug/L 05/29/08 --100 111 60.5 J 138 91.4 J 55.2 J 29.5 J 0.6 J ug/L 11/17/08 --100 109 61.3 J 148 51.5 J 18.2 J 36.7 J ND ug/L 05/27/09 --100 96.2 J 60.5 J 156 78.2 J 44.1 J 34.9 J NDug/L 11/11/09 --100 225 69.8 J 95.2 J 93.5 J 74.1 J 33.0 J ND ug/L 05/26/10 --100 50.1 J 76.2 J 119 29.7 J 16.1 J 33.0 J NDug/L 11/15/10 --100 56.0 J 55.7 J 107 96.7 J 36.5 J 34.1 J ND ug/L 05/09/11 --100 135 71.7 J 137 68.8 J 51.6 J 31.8 J ND ug/L 11/14/11 --100 166 73.1 J 115 53.8 J 69.7 J 36.3 J NDug/L 05/08/12 --100 146 60.5 J 127 43.0 J 55.9 J 29.3 J ND ug/L 11/05/12 --100 233 81.4 J 138 75.3 J 65.2 J 37.6 J NDug/L 05/14/13 --100 229 60.5 J 104 25.2 J 30.0 J 36.4 J 1.21 J ug/L 11/12/13 --100 126 61.5 J 155 52.9 J 52.3 J 33.8 J 1.22 J ug/L 05/13/14 --100 68.1 J 47.2 J 153 13.4 J 26.6 J 32.0 J NDug/L 11/17/14 1.00 100 179 56.8 J 147 150 53.7 J 31.6 J ND ug/L 05/12/15 1.00 100 54.6 J 42.8 J 155 30.3 J 15.9 J 37.8 J NDug/L 11/09/15 1.00 100 105 57.3 J 173 33.2 J 16.0 J 34.9 J ND ug/L 05/10/16 1.00 100 168 89.7 J 201 158 17.7 J 29.8 J ND ug/L 11/07/16 1.00 100 107 59.3 J 180 73.0 J 20.8 J 33.6 J NDug/L 05/09/17 1.00 100 89.1 J 98.3 J 151 48.3 J 15.1 J 34.1 J ND July 2017 Page 4 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Beryllium ug/L 10/08/96 --1 ND ND ND --------GWPS = 4 ug/L ug/L 10/24/96 ------------------ EPA MCL = 4 ug/L ug/L 02/18/97 --1 ND ND ND --------ug/L 02/19/97 --1 -------------- ug/L 04/24/97 ------------------ ug/L 08/28/97 --2 --------------ug/L 08/29/97 --2 ND ND ND -------- ug/L 10/09/97 ------------------ug/L 10/30/97 ------------------ ug/L 02/23/98 --5 ND ND ND -------- ug/L 02/24/98 --5 --------------ug/L 04/20/98 ------------------ ug/L 08/24/98 --5 ND ND ND --------ug/L 10/27/98 ------------------ ug/L 02/22/99 --5 ND ND ND -------- ug/L 04/20/99 ------------------ug/L 08/23/99 --5 ND ND ND -------- ug/L 08/24/99 --5 --------------ug/L 01/11/00 --5 -------------- ug/L 02/21/00 --5 ND ND ND -------- ug/L 02/22/00 --5 --------------ug/L 10/10/00 --2 -------------- ug/L 07/12/01 --2 ND ND ND ND ND ND --ug/L 10/24/01 --2 ND ND ND ND ND ND -- ug/L 05/28/02 --2 -------------- ug/L 11/05/02 --2 --------------ug/L 05/29/03 --2 -------------- ug/L 11/05/03 --2 --------------ug/L 05/25/04 --2 -------------- ug/L 11/23/04 --2 -------------- ug/L 05/16/05 --2 --------------ug/L 11/25/05 --2 -------------- ug/L 05/24/06 --2 ------------NDug/L 11/20/06 --2 ------------ND ug/L 05/22/07 --1 ND ND ND ND ND ND ND ug/L 11/14/07 --1 ND ND ND ND ND ND NDug/L 05/29/08 --1 ND ND ND ND ND ND ND ug/L 11/17/08 --1 ND ND ND ND ND ND NDug/L 05/27/09 --1 0.11 J ND ND 0.09 J ND ND ND ug/L 11/11/09 --1 0.245 J ND ND ND ND ND ND ug/L 05/26/10 --1 ND ND ND ND ND ND NDug/L 11/15/10 --1 ND ND ND ND ND 0.115 B 0.106 J ug/L 05/09/11 --1 ND ND ND ND ND ND NDug/L 11/14/11 --1 0.162 J ND ND ND 0.101 J 0.108 J ND ug/L 05/08/12 --1 0.188 J ND ND ND ND ND ND ug/L 11/05/12 --1 0.208 J ND ND 0.102 J ND ND NDug/L 05/14/13 --1 0.185 J ND ND ND ND ND ND ug/L 11/12/13 --1 0.111 J ND ND ND ND ND NDug/L 05/13/14 --1 ND ND ND ND ND ND ND ug/L 11/17/14 0.100 1 0.160 J ND ND 0.203 J ND 0.114 J ND ug/L 05/12/15 0.100 1 ND ND ND ND ND ND NDug/L 11/09/15 0.100 1 ND ND ND ND ND ND ND ug/L 05/10/16 0.100 1 ND ND ND ND ND ND NDug/L 11/07/16 0.100 1 ND ND ND ND ND ND ND ug/L 05/09/17 0.100 1 ND ND ND ND ND ND ND July 2017 Page 5 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Cadmium ug/L 02/05/96 --1 ND ------------NC 2L = 2 ug/L ug/L 10/08/96 --1 --ND ND -------- EPA MCL = 5 ug/L ug/L 02/18/97 --1 ND ND ND --------ug/L 08/29/97 --1 ND ND ND -------- ug/L 02/23/98 --5 ND ND ND -------- ug/L 08/24/98 --5 ND ND ND --------ug/L 02/22/99 --5 ND ND ND -------- ug/L 08/23/99 --5 ND ND ND --------ug/L 02/21/00 --5 ND ND ND -------- ug/L 10/10/00 --1 ND 7 4 ND ND ND -- ug/L 07/12/01 --1 ND 6 3 ND ND ND --ug/L 10/24/01 --1 ND 4 3 ND ND ND -- ug/L 05/28/02 --1 ND ND ND ND ND ND --ug/L 11/05/02 --1 ND ND ND ND ND ND -- ug/L 05/29/03 --1 ND ND ND ND ND ND -- ug/L 11/05/03 --1 --------------ug/L 05/25/04 --1 ND ND ND ND ND ND -- ug/L 11/23/04 --1 ND ND ND ND ND ND --ug/L 05/16/05 --1 ND ND ND ND ND ND -- ug/L 11/25/05 --1 ND ND ND ND ND ND -- ug/L 05/24/06 --1 ND ND ND ND ND ND NDug/L 11/20/06 --1 ND ND ND ND ND ND ND ug/L 05/22/07 --1 0.50 J ND ND ND ND ND NDug/L 11/14/07 --1 ND ND ND ND ND 0.50 J ND ug/L 05/29/08 --1 ND ND ND ND ND ND 0.5 J ug/L 11/17/08 --1 ND ND ND ND ND ND NDug/L 05/27/09 --1 0.20 J 0.24 J 0.14 J ND 0.14 J ND ND ug/L 11/11/09 --1 ND ND ND ND ND ND NDug/L 05/26/10 --1 ND ND ND ND ND ND ND ug/L 11/15/10 --1 ND ND ND ND ND 0.400 J ND ug/L 05/09/11 --1 ND ND ND ND ND ND NDug/L 11/14/11 --1 ND ND ND ND ND ND ND ug/L 05/08/12 --1 ND ND ND ND ND ND NDug/L 11/05/12 --1 ND ND ND ND ND ND ND ug/L 05/14/13 --1 ND ND ND ND ND ND ND ug/L 11/12/13 --1 ND ND ND ND ND ND NDug/L 05/13/14 --1 ND ND ND ND ND ND ND ug/L 11/17/14 0.360 1 0.564 J ND ND ND ND ND NDug/L 05/12/15 0.360 1 ND ND ND ND ND ND ND ug/L 11/09/15 0.360 1 ND ND ND ND ND ND ND ug/L 05/10/16 0.360 1 ND ND ND ND ND ND NDug/L 11/07/16 0.360 1 ND ND ND ND ND ND ND ug/L 05/09/17 0.360 1 ND ND ND ND ND ND ND July 2017 Page 6 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Chromium ug/L 10/08/96 --2 ND ND ND --------NC 2L = 10 ug/L ug/L 02/18/97 --2 ND ND ND -------- EPA MCL = 100 ug/L ug/L 08/29/97 --10 ND ND ND --------ug/L 02/23/98 --5 ND ND ND -------- ug/L 08/24/98 --5 ND ND ND -------- ug/L 02/22/99 --5 ND ND ND --------ug/L 08/23/99 --5 ND ND ND -------- ug/L 02/21/00 --5 ND ND ND --------ug/L 10/10/00 --10 ND ND ND ND ND ND -- ug/L 07/12/01 --10 ND ND ND 22 ND ND -- ug/L 10/24/01 --10 ND ND ND ND ND ND --ug/L 05/28/02 --10 20 ND ND 28 19 ND -- ug/L 11/05/02 --10 ND ND ND ND ND ND --ug/L 05/29/03 --10 ND ND ND 96 ND ND -- ug/L 11/05/03 --10 -------------- ug/L 05/25/04 --10 ND ND ND ND ND ND --ug/L 11/23/04 --10 ND ND ND ND 14 ND -- ug/L 05/16/05 --10 ND ND ND ND ND ND --ug/L 11/25/05 --10 ND ND ND ND ND ND -- ug/L 05/24/06 --10 ND ND ND ND ND ND ND ug/L 11/20/06 --10 ND ND ND 31 ND ND NDug/L 05/22/07 --10 ND ND ND 52.9 ND ND ND ug/L 11/14/07 --10 ND ND ND 12.7 ND ND NDug/L 05/29/08 --10 ND ND ND 8.2 J 2.0 J ND ND ug/L 11/17/08 --10 3.4 B ND ND 14.1 B 3.3 B 1.4 B 4.9 J ug/L 05/27/09 --10 ND ND ND 7.5 J 1.4 J ND NDug/L 11/11/09 --10 ND 27.0 2.64 J 39.2 8.53 J ND ND ug/L 05/26/10 --10 ND 4.34 J 1.86 J 14.5 5.23 J ND NDug/L 11/15/10 --10 ND 4.54 J 1.59 J 11.6 2.41 J ND ND ug/L 05/09/11 --10 ND ND 2.56 J 4.31 J 3.60 J ND ND ug/L 11/14/11 --10 ND 1.47 J 3.20 J 3.89 J 13.7 ND NDug/L 05/08/12 --10 2.09 J 2.67 J 2.61 J 12.4 14.2 ND ND ug/L 11/05/12 --10 19.4 1.14 J 1.73 J 14.8 11.2 ND NDug/L 05/14/13 --10 1.93 J 2.31 J 1.60 J 24.8 7.86 J ND ND ug/L 11/12/13 --10 1.97 J ND 6.16 J 17.4 9.34 J 4.34 1 ND ug/L 05/13/14 --10 ND 5.58 J ND 57.9 10.5 ND NDug/L 11/17/14 1.40 10 ND ND 1.70 J 10.3 9.85 J ND ND ug/L 05/12/15 1.40 10 2.50 B 1.91 B 3.28 B 33.0 16.0 1.79 B 1.68 Jug/L 11/09/15 1.40 10 ND ND ND 19.1 14.3 ND ND ug/L 05/10/16 1.40 10 ND ND ND 14.8 22.4 ND ND (Verification Event)ug/L 07/07/16 1.40 10 --------12.5 --ND(Verification Event - Dissolved)ug/L 07/07/16 1.40 10 --------2.35 J --ND ug/L 11/07/16 1.40 10 ND ND ND 20.0 11.6 ND NDug/L 05/09/17 1.40 10 ND 1.86 J ND 27.6 17.0 1.59 J ND July 2017 Page 7 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Cobalt ug/L 10/08/96 --2 ND ND ND --------GWPS = 1 ug/L ug/L 10/24/96 ------------------ No EPA MCL ug/L 02/18/97 --3 ND ND ND --------ug/L 02/19/97 --3 -------------- ug/L 04/24/97 ------------------ ug/L 08/28/97 --10 --------------ug/L 08/29/97 --10 ND ND ND -------- ug/L 10/09/97 ------------------ug/L 10/30/97 ------------------ ug/L 02/23/98 --5 ND ND ND -------- ug/L 02/24/98 --5 --------------ug/L 04/20/98 ------------------ ug/L 08/24/98 --5 ND ND ND --------ug/L 10/27/98 ------------------ ug/L 02/22/99 --5 ND ND ND -------- ug/L 04/20/99 ------------------ug/L 08/23/99 --5 ND ND ND -------- ug/L 08/24/99 --5 --------------ug/L 01/11/00 --5 -------------- ug/L 02/21/00 --5 ND ND ND -------- ug/L 02/22/00 --5 --------------ug/L 10/10/00 --10 -------------- ug/L 07/12/01 --10 ND ND ND ND ND ND --ug/L 10/24/01 --10 ND ND ND ND ND ND -- ug/L 05/28/02 --10 -------------- ug/L 11/05/02 --10 --------------ug/L 05/29/03 --10 -------------- ug/L 11/05/03 --10 --------------ug/L 05/25/04 --10 -------------- ug/L 11/23/04 --10 -------------- ug/L 05/16/05 --10 --------------ug/L 11/25/05 --10 -------------- ug/L 05/24/06 --10 ------------NDug/L 11/20/06 --10 ------------ND ug/L 05/22/07 --10 ND ND ND ND ND ND ND ug/L 11/14/07 --10 3.0 J ND ND ND ND ND NDug/L 05/29/08 --10 2.4 J ND ND 3.1 J 2.2 J ND ND ug/L 11/17/08 --10 1.5 J ND ND ND ND ND NDug/L 05/27/09 --10 1.1 J 0.7 J ND 0.9 J 1.0 J 0.6 J ND ug/L 11/11/09 --10 2.05 J ND ND 1.57 J 1.26 J ND ND ug/L 05/26/10 --10 ND ND ND 1.54 J 1.24 J ND NDug/L 11/15/10 --10 ND ND ND 1.19 J ND ND ND ug/L 05/09/11 --10 ND ND ND ND 1.22 J ND NDug/L 11/14/11 --10 ND ND ND ND 3.83 J ND ND ug/L 05/08/12 --10 1.50 J ND ND ND 8.12 J ND ND ug/L 11/05/12 --10 2.93 J 1.13 J ND 1.38 J 8.68 J 1.40 J NDug/L 05/14/13 --10 2.09 J ND ND ND 9.01 J 1.15 J ND ug/L 11/12/13 --10 1.35 J ND ND 1.22 J 11.9 ND NDug/L 05/13/14 --10 ND ND ND 1.78 J 8.78 J ND ND ug/L 11/17/14 1.10 10 1.92 J 1.17 J ND 2.10 J 9.58 J 1.40 J ND ug/L 05/12/15 1.10 10 ND ND ND 2.73 J 9.21 J 1.24 J NDug/L 11/09/15 1.10 10 ND ND ND ND 9.10 J ND ND ug/L 05/10/16 1.10 10 1.14 J ND ND 1.12 J 25.8 ND ND(Verification Event)ug/L 07/07/16 1.10 10 --------10.6 --ND (Verification Event - Dissolved)ug/L 07/07/16 1.10 10 --------6.40 J --NDug/L 11/07/16 1.10 10 1.19 J ND ND 1.46 J 5.86 J ND NDug/L 05/09/17 1.10 10 1.16 J 1.20 J ND 2.23 J 12.5 1.16 J ND July 2017 Page 8 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Copper ug/L 01/16/00 --10 ND ND ND --------NC 2L = 1000 ug/L ug/L 02/18/97 --50 ND ND ND -------- EPA MCL = 1300 ug/L#ug/L 08/29/97 --200 ND ND ND --------ug/L 02/23/98 --5 ND ND ND -------- ug/L 08/24/98 --5 ND ND ND -------- ug/L 02/22/99 --5 ND ND ND --------ug/L 08/23/99 --5 ND ND ND -------- ug/L 02/21/00 --5 ND ND ND --------ug/L 07/12/01 --200 ND ND ND ND ND ND -- ug/L 10/24/01 --200 ND ND ND ND ND ND -- ug/L 05/28/02 --200 --------------ug/L 11/05/02 --200 -------------- ug/L 05/29/03 --200 --------------ug/L 11/05/03 --200 -------------- ug/L 05/25/04 --200 -------------- ug/L 11/23/04 --200 --------------ug/L 05/16/05 --200 -------------- ug/L 11/25/05 --200 --------------ug/L 05/24/06 --200 ------------ND ug/L 11/20/06 --200 ------------ND ug/L 05/22/07 --10 ND ND ND ND ND 6.00 J NDug/L 11/14/07 --10 0.70 J ND ND ND ND 2.80 J ND ug/L 05/29/08 --10 ND ND ND 2.00 B ND 8.10 J 1.00 Jug/L 11/17/08 --10 ND ND ND ND 1.60 J 2.00 J ND ug/L 05/27/09 --10 ND ND ND ND 4.66 B 7.31 B 1.47 J ug/L 11/11/09 --10 ND ND ND 2.94 J 3.01 J 2.78 J NDug/L 05/26/10 --10 ND ND ND 3.97 J 3.74 J 3.40 J ND ug/L 11/15/10 --10 ND ND ND 2.17 J ND ND NDug/L 05/09/11 --10 ND ND ND ND ND 5.54 J ND ug/L 11/14/11 --10 ND ND ND ND 2.65 J 2.99 J ND ug/L 05/08/12 --10 ND ND ND 1.80 J ND 6.63 J NDug/L 11/05/12 --10 ND ND ND ND ND 1.99 J ND ug/L 05/14/13 --10 ND ND ND 1.90 J ND 8.83 J NDug/L 11/12/13 --10 ND ND ND ND 3.28 J 13.7 ND ug/L 05/13/14 --10 ND ND ND 3.36 J 1.77 J 13.5 ND ug/L 11/17/14 1.60 10 ND ND ND ND ND 29.8 NDug/L 05/12/15 1.60 10 ND ND ND 7.11 J 2.41 J 4.39 J ND ug/L 11/09/15 1.60 10 ND ND ND 3.22 J ND 12.7 NDug/L 05/10/16 1.60 10 ND ND ND ND ND 18.7 2.90 J ug/L 11/07/16 1.60 10 4.51 B 1.82 B 3.94 B 6.48 B 5.44 B 37.0 3.34 J ug/L 05/09/17 1.60 10 ND ND ND 7.50 B 2.50 B 23.9 2.45 J July 2017 Page 9 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Lead ug/L 10/08/96 --5 ND ND ND --------NC 2L = 15 ug/L ug/L 02/18/97 --5 ND ND ND -------- EPA MCL = 15 ug/L#ug/L 08/29/97 --10 ND ND ND --------ug/L 02/23/98 --5 ND ND ND -------- ug/L 08/24/98 --5 ND ND ND -------- ug/L 02/22/99 --5 ND ND ND --------ug/L 08/23/99 --5 ND ND ND -------- ug/L 02/21/00 --5 ND ND ND --------ug/L 10/10/00 --10 ND ND 11 14 ND ND -- ug/L 07/12/01 --10 ND 10 11 44 ND ND -- ug/L 10/24/01 --10 ND ND ND ND ND 12 --ug/L 05/28/02 --10 ND ND ND ND ND ND -- ug/L 11/05/02 --10 ND ND ND ND ND ND --ug/L 05/29/03 --10 ND ND ND 28 ND ND -- ug/L 11/05/03 --10 -------------- ug/L 05/25/04 --10 ND ND ND ND ND ND --ug/L 11/23/04 --10 ND ND ND ND ND ND -- ug/L 05/16/05 --10 ND ND ND ND ND ND --ug/L 11/25/05 --10 ND ND ND ND ND ND -- ug/L 05/24/06 --10 ND ND ND ND ND ND ND ug/L 11/20/06 --10 ND ND ND 17 ND ND NDug/L 05/22/07 --10 3.1 J ND 2.8 J ND ND ND ND ug/L 11/14/07 --10 ND ND ND ND ND ND NDug/L 05/29/08 --10 ND ND ND ND ND ND ND ug/L 11/17/08 --10 ND ND ND 2.5 J ND ND ND ug/L 05/27/09 --10 ND ND ND 1.9 J ND ND NDug/L 11/11/09 --10 2.00 J 2.38 J ND 2.79 J 3.46 J ND ND ug/L 05/26/10 --10 ND 2.85 J ND 5.26 J ND ND NDug/L 11/15/10 --10 ND 2.64 J ND 4.19 J 3.63 J ND ND ug/L 05/09/11 --10 ND 3.24 J ND ND 2.92 J ND ND ug/L 11/14/11 --10 ND ND ND ND 3.89 J ND NDug/L 05/08/12 --10 ND ND ND ND 4.65 J ND ND ug/L 11/05/12 --10 2.69 J ND 2.41 J ND 3.20 J ND NDug/L 05/14/13 --10 ND ND ND 2.69 J ND ND ND ug/L 11/12/13 --10 ND ND ND ND ND ND ND ug/L 05/13/14 --10 ND ND ND 3.10 J ND ND NDug/L 11/17/14 2.10 10 ND ND ND ND 2.82 J 3.62 J ND ug/L 05/12/15 2.10 10 ND ND ND 6.18 J ND ND NDug/L 11/09/15 2.10 10 ND ND ND 4.44 J 3.18 J ND ND ug/L 05/10/16 2.10 10 ND ND ND ND ND ND ND ug/L 11/07/16 3.10 10 ND ND ND 4.67 J 8.14 J ND NDug/L 05/09/17 3.10 10 ND ND ND 6.31 J ND ND ND July 2017 Page 10 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Mercury ug/L 10/10/00 --1 ND ND ND ND ND ND --NC 2L = 1 ug/L ug/L 07/12/01 ------------------ EPA MCL = 2 ug/L ug/L 10/24/01 ------------------ug/L 05/28/02 --1 ND ND ND ND ND ND --ug/L 11/05/02 ----ND ND ND ND ND ND -- ug/L 05/29/03 --1 ND ND ND ND ND ND --ug/L 11/05/03 ------------------ ug/L 05/25/04 --0.5 ND ND ND ND ND ND --ug/L 11/23/04 --1 ND ND ND ND ND ND --ug/L 05/16/05 --0.5 ND ND ND ND ND ND -- ug/L 11/25/05 --1 ND ND ND ND ND ND --ug/L 05/24/06 --1 ND ND ND ND ND ND ND ug/L 11/20/06 ----ND ND ND ND ND ND NDug/L 05/22/07 --0.2 ND ND ND ND ----NDug/L 11/14/07 --0.2 ND ND ND ND ND ND 0.16 J ug/L 05/29/08 --0.2 ND ND ND ND ND ND NDug/L 11/17/08 --0.2 ND ND ND ND ND ND ND ug/L 05/27/09 --0.2 ND ND ND ND ND ND NDug/L 11/11/09 --0.2 ND ND ND ND ND ND NDug/L 05/26/10 --0.2 ND ND ND ND ND ND ND ug/L 11/15/10 --0.2 ND ND ND ND ND ND NDug/L 05/09/11 --0.2 ND ND ND ND ND ND ND ug/L 11/14/11 --0.2 0.264 ND ND ND ND ND NDug/L 05/08/12 --0.2 ND ND ND ND ND ND NDug/L 11/05/12 --0.2 ND ND ND ND ND ND ND ug/L 05/14/13 --0.2 ND ND ND ND ND ND NDug/L 11/12/13 --0.2 ND ND ND ND ND ND ND ug/L 05/13/14 --0.2 ND ND ND ND ND ND NDug/L 11/17/14 0.170 0.2 ND ND ND ND ND ND NDug/L 05/12/15 0.170 0.2 ND ND ND ND ND ND ND ug/L 11/09/15 0.170 0.2 ND ND ND ND ND ND NDug/L 05/10/16 0.170 0.2 ND ND ND ND ND ND ND ug/L 11/07/16 0.170 0.2 ND ND ND ND ND ND NDug/L 05/09/17 0.170 0.2 ND ND ND ND ND ND ND July 2017 Page 11 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Nickel ug/L 10/08/96 --50 ND ND ND --------NC 2L = 100 ug/L ug/L 02/18/97 --50 ND ND ND -------- No EPA MCL ug/L 08/29/97 --50 ND ND ND --------ug/L 02/23/98 --5 ND ND ND -------- ug/L 08/24/98 --5 ND ND ND -------- ug/L 02/22/99 --5 ND ND ND --------ug/L 08/23/99 --5 ND ND ND -------- ug/L 02/21/00 --5 ND ND ND --------ug/L 07/12/01 --50 ND ND ND ND ND ND -- ug/L 10/24/01 --50 ND ND ND ND ND ND -- ug/L 05/28/02 --50 --------------ug/L 11/05/02 --50 -------------- ug/L 05/29/03 --50 --------------ug/L 11/05/03 --50 -------------- ug/L 05/25/04 --50 -------------- ug/L 11/23/04 --50 --------------ug/L 05/16/05 --50 -------------- ug/L 11/25/05 --50 --------------ug/L 05/24/06 --50 ------------ND ug/L 11/20/06 --50 ------------ND ug/L 05/22/07 --50 2.7 J ND ND 37.5 J ND ND NDug/L 11/14/07 --50 ND ND ND 10.4 J 2.1 J ND ND ug/L 05/29/08 --50 2.8 J ND ND 4.8 J 2.6 J ND NDug/L 11/17/08 --50 2.8 B 1.9 B ND 6.3 B 2.5 B ND 3.2 J ug/L 05/27/09 --50 1.6 B 0.8 B 0.9 B 5.6 J 2.6 B 1.2 B 0.7 J ug/L 11/11/09 --50 ND 16.7 J ND 25.5 J 4.41 J ND NDug/L 05/26/10 --50 ND 2.40 J ND 4.82 J 2.69 J ND ND ug/L 11/15/10 --50 ND 1.96 J ND 6.51 J ND ND NDug/L 05/09/11 --50 ND ND ND 4.28 J 2.97 J ND ND ug/L 11/14/11 --50 ND ND ND 2.85 J 7.01 J ND NDug/L 05/08/12 --50 2.46 J ND ND 8.28 J 7.92 J ND ND ug/L 11/05/12 --50 13.0 J ND ND 12.3 J 6.85 J ND ND ug/L 05/14/13 --50 3.45 J 1.80 J 2.81 J 15.4 J 5.87 J ND NDug/L 11/12/13 --50 ND ND 2.23 J 11.1 J 5.69 J ND ND ug/L 05/13/14 --50 ND 2.81 J ND 36.5 J 5.43 J ND NDug/L 11/17/14 1.80 50 ND ND ND 8.35 J 6.28 J ND ND ug/L 05/12/15 1.80 50 2.00 B ND 1.89 B 14.1 J 7.78 B ND 1.89 J ug/L 11/09/15 1.80 50 ND ND ND 10.1 J 7.50 J ND NDug/L 05/10/16 1.80 50 ND ND ND 7.22 J 13.2 J ND ND ug/L 11/07/16 2.20 50 ND ND ND 11.3 J 7.25 J ND NDug/L 05/09/17 2.20 50 ND ND ND 12.4 J 10.4 J ND ND July 2017 Page 12 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Selenium ug/L 10/08/96 --5 ND ND ND --------NC 2L = 20 ug/L ug/L 10/24/96 --20 -------------- EPA MCL = 50 ug/L ug/L 02/18/97 --5 ND ND ND --------ug/L 02/19/97 --5 -------------- ug/L 04/24/97 --20 -------------- ug/L 08/28/97 --20 --------------ug/L 08/29/97 --20 ND ND ND -------- ug/L 10/09/97 --20 --------------ug/L 10/30/97 ------------------ ug/L 02/23/98 --5 ND ND ND -------- ug/L 02/24/98 --5 --------------ug/L 04/20/98 --20 -------------- ug/L 08/24/98 --5 ND ND ND --------ug/L 10/27/98 --20 -------------- ug/L 02/22/99 --5 ND ND ND -------- ug/L 04/20/99 --20 --------------ug/L 08/23/99 --5 ND ND ND -------- ug/L 08/24/99 --5 --------------ug/L 01/11/00 --5 -------------- ug/L 02/21/00 --5 ND ND ND -------- ug/L 02/22/00 --5 --------------ug/L 10/10/00 --20 ND ND ND ND ND ND -- ug/L 07/12/01 --20 ND ND ND ND ND ND --ug/L 10/24/01 --20 ND ND ND ND ND ND -- ug/L 05/28/02 --20 ND ND ND ND ND ND -- ug/L 11/05/02 --20 ND ND ND ND ND ND --ug/L 05/29/03 --20 ND ND ND ND ND ND -- ug/L 11/05/03 --20 --------------ug/L 05/25/04 --20 ND ND ND ND ND ND -- ug/L 11/23/04 --20 ND ND ND ND ND ND -- ug/L 05/16/05 --20 ND ND ND ND ND ND --ug/L 11/25/05 --20 ND ND ND ND ND ND -- ug/L 05/24/06 --20 ND ND ND ND ND ND NDug/L 11/20/06 --20 ND ND ND ND ND ND ND ug/L 05/22/07 --10 ND ND ND ND ND ND ND ug/L 11/14/07 --10 ND ND ND 2.0 B ND ND 3.1 Jug/L 05/29/08 --10 ND ND ND ND ND ND 2.1 J ug/L 11/17/08 --10 ND ND ND ND ND ND NDug/L 05/27/09 --10 ND ND ND ND ND ND ND ug/L 11/11/09 --10 ND ND ND ND ND ND 3.41 J ug/L 05/26/10 --10 ND ND ND ND ND ND 3.71 Jug/L 11/15/10 --10 ND ND ND ND ND ND ND ug/L 05/09/11 --10 ND ND ND ND ND ND NDug/L 11/14/11 --10 ND ND ND ND ND ND ND ug/L 05/08/12 --10 ND ND ND ND ND 6.46 B 4.01 Jug/L 11/05/12 --10 ND ND ND ND ND ND ND ug/L 05/14/13 --10 ND ND ND ND ND ND ND ug/L 11/12/13 --10 ND ND ND ND ND ND NDug/L 05/13/14 --10 ND ND ND ND ND ND ND ug/L 11/17/14 5.00 10 ND ND ND ND ND ND NDug/L 05/12/15 5.00 10 ND ND ND ND ND ND ND ug/L 11/09/15 5.00 10 ND ND ND ND ND ND ND ug/L 05/10/16 5.00 10 ND ND ND ND ND ND NDug/L 11/07/16 6.20 10 ND ND ND ND ND ND ND ug/L 05/09/17 6.20 10 ND ND ND ND ND ND ND July 2017 Page 13 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Silver ug/L 10/08/96 --5 ND ND ND --------NC 2L = 20 ug/L ug/L 10/24/96 --10 -------------- EPA MCL = 100 ug/L ug/L 02/18/97 --5 ND ND ND --------ug/L 02/19/97 --5 -------------- ug/L 04/24/97 --10 -------------- ug/L 08/28/97 --10 --------------ug/L 08/29/97 --10 ND ND ND -------- ug/L 10/09/97 --10 --------------ug/L 10/30/97 ------------------ ug/L 02/23/98 --5 ND ND ND -------- ug/L 02/24/98 --5 --------------ug/L 04/20/98 --10 -------------- ug/L 08/24/98 --5 ND ND ND --------ug/L 10/27/98 --10 -------------- ug/L 02/22/99 --5 ND ND ND -------- ug/L 04/20/99 --10 --------------ug/L 08/23/99 --5 ND ND ND -------- ug/L 08/24/99 --5 --------------ug/L 01/11/00 --5 -------------- ug/L 02/21/00 --5 ND ND ND -------- ug/L 02/22/00 ------------------ug/L 10/10/00 --10 ND ND ND ND ND ND -- ug/L 07/12/01 --10 ND ND ND ND ND ND --ug/L 10/24/01 --10 ND ND ND ND ND ND -- ug/L 05/28/02 --10 ND ND ND ND ND ND -- ug/L 11/05/02 --10 ND ND ND ND ND ND --ug/L 05/29/03 --10 ND ND ND ND ND ND -- ug/L 11/05/03 --10 --------------ug/L 05/25/04 --10 ND ND ND ND ND ND -- ug/L 11/23/04 --10 ND ND ND ND ND ND -- ug/L 05/16/05 --10 ND ND ND ND ND ND --ug/L 11/25/05 --10 ND ND ND ND ND ND -- ug/L 05/24/06 --10 ND ND ND ND ND ND NDug/L 11/20/06 --10 ND ND ND ND ND ND ND ug/L 05/22/07 --10 ND ND ND ND ND ND ND ug/L 11/14/07 --10 ND ND ND ND ND ND NDug/L 05/29/08 --10 ND ND ND 3.0 B ND ND 2.9 J ug/L 11/17/08 --10 ND ND ND ND ND ND NDug/L 05/27/09 --10 ND ND ND ND ND ND ND ug/L 11/11/09 --10 ND ND ND ND ND ND ND ug/L 05/26/10 --10 ND ND ND ND ND ND NDug/L 11/15/10 --10 ND ND 1.93 J ND ND ND ND ug/L 05/09/11 --10 ND ND ND ND ND ND NDug/L 11/14/11 --10 ND ND ND ND ND ND ND ug/L 05/08/12 --10 ND ND ND ND ND ND ND ug/L 11/05/12 --10 ND ND ND ND ND ND NDug/L 05/14/13 --10 ND ND ND ND ND ND ND ug/L 11/12/13 --10 ND ND ND ND ND ND NDug/L 05/13/14 --10 ND ND ND 31.5 (ND)ND ND ND ug/L 11/17/14 1.90 10 ND ND ND ND ND ND ND ug/L 05/12/15 1.90 10 ND ND 1.97 J ND ND ND NDug/L 11/09/15 1.90 10 ND 1.99 J 5.26 J ND ND ND ND ug/L 05/10/16 1.90 10 ND ND ND ND ND ND NDug/L 11/07/16 1.90 10 ND ND ND ND ND ND ND ug/L 05/09/17 1.90 10 ND ND ND ND ND ND ND July 2017 Page 14 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Thallium ug/L 10/08/96 --1 ND ND ND --------GWPS= 0.28 ug/L ug/L 10/24/96 ------------------ EPA MCL = 2 ug/L ug/L 02/18/97 --1 ND ND ND --------ug/L 02/19/97 --1 -------------- ug/L 04/24/97 ------------------ ug/L 08/28/97 --10 --------------ug/L 08/29/97 --10 ND ND ND -------- ug/L 10/09/97 ------------------ug/L 10/30/97 ------------------ ug/L 02/23/98 --10 ND ND ND -------- ug/L 02/24/98 --10 --------------ug/L 04/20/98 ------------------ ug/L 08/24/98 --10 ND ND ND --------ug/L 10/27/98 ------------------ ug/L 02/22/99 --10 ND ND ND -------- ug/L 04/20/99 ------------------ug/L 08/23/99 --10 ND ND ND -------- ug/L 08/24/99 --10 --------------ug/L 01/11/00 --10 -------------- ug/L 02/21/00 --10 ND ND ND -------- ug/L 02/22/00 --10 --------------ug/L 10/10/00 --10 -------------- ug/L 07/12/01 --10 ND ND ND ND ND ND --ug/L 10/24/01 --10 ND ND ND ND ND ND -- ug/L 05/28/02 --10 -------------- ug/L 11/05/02 ------------------ug/L 05/29/03 --10 -------------- ug/L 11/05/03 --10 --------------ug/L 05/25/04 --10 -------------- ug/L 11/23/04 --10 -------------- ug/L 05/16/05 --10 --------------ug/L 11/25/05 --10 -------------- ug/L 05/24/06 --10 ------------NDug/L 11/20/06 --10 ------------ND ug/L 05/22/07 --5.5 ND ND ND ND ND ND ND ug/L 11/14/07 --5.5 0.077 J ND ND ND ND ND NDug/L 05/29/08 --5.5 ND ND ND ND ND ND ND ug/L 11/17/08 --5.5 ND ND ND 0.041 J ND ND NDug/L 05/27/09 --5.5 ND ND ND ND ND ND ND ug/L 11/11/09 --5.5 ND ND ND ND ND 4.78 J ND ug/L 05/26/10 --5.5 ND ND ND ND ND ND NDug/L 11/15/10 --5.5 ND ND ND ND ND ND ND ug/L 05/09/11 --5.5 ND ND ND ND ND ND NDug/L 11/14/11 --5.5 ND ND ND ND ND ND ND ug/L 05/08/12 --5.5 ND ND 0.253 J ND ND ND ND ug/L 11/05/12 --5.5 ND ND ND ND ND ND NDug/L 05/14/13 --5.5 ND ND ND ND ND ND ND ug/L 11/12/13 --5.5 ND ND ND ND ND ND NDug/L 05/13/14 --5.5 ND ND ND ND ND ND ND ug/L 11/17/14 0.110 5.5 ND 0.116 J ND ND ND ND ND ug/L 05/12/15 0.110 5.5 ND ND ND ND ND ND NDug/L 11/09/15 0.110 5.5 ND ND ND ND ND ND ND ug/L 05/10/16 0.110 5.5 ND ND ND ND ND ND NDug/L 11/07/16 0.110 5.5 ND ND ND ND ND ND ND ug/L 05/09/17 0.110 5.5 0.148 J ND ND 0.147 J ND ND ND July 2017 Page 15 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Vanadium ug/L 10/08/96 --5 ND ND ND -------- SWS GPS = 0.3 ug/L ug/L 02/18/97 --5 ND ND ND -------- No EPA MCL ug/L 08/29/97 --40 ND ND ND --------ug/L 02/23/98 --5 ND ND ND -------- ug/L 08/24/98 --5 ND ND 6.06 --------ug/L 02/22/99 --5 ND ND ND --------ug/L 08/23/99 --5 ND ND ND -------- ug/L 02/21/00 --5 ND ND ND --------ug/L 07/12/01 --40 ND ND ND ND ND ND -- ug/L 10/24/01 --40 ND ND ND ND ND ND --ug/L 05/28/02 --40 --------------ug/L 11/05/02 --40 -------------- ug/L 05/29/03 --40 --------------ug/L 11/05/03 --40 -------------- ug/L 05/25/04 --40 --------------ug/L 11/23/04 --40 --------------ug/L 05/16/05 --40 -------------- ug/L 11/25/05 --40 --------------ug/L 05/24/06 --40 ------------ND ug/L 11/20/06 --40 ------------NDug/L 05/22/07 --25 ND ND ND 2.6 J ND ND NDug/L 11/14/07 --25 ND ND ND 1.6 J ND ND ND ug/L 05/29/08 --25 ND ND ND 5.4 B 1.7 B 1.0 B 1.2 Jug/L 11/17/08 --25 ND ND ND 14.4 J 1.6 J ND ND ug/L 05/27/09 --25 ND 1.0 J 0.9 J 5.8 J 0.8 J ND NDug/L 11/11/09 --25 ND 4.26 J ND 6.65 J 3.41 J ND NDug/L 05/26/10 --25 ND ND 3.17 J 18.7 J 3.27 J ND ND ug/L 11/15/10 --25 ND 3.56 J ND 6.05 J 1.78 J ND NDug/L 05/09/11 --25 ND ND ND ND ND ND ND ug/L 11/14/11 --25 ND ND ND ND 5.92 J ND NDug/L 05/08/12 --25 ND ND ND 3.84 J 4.24 J ND NDug/L 11/05/12 --25 6.85 J ND ND ND 3.33 J ND ND ug/L 05/14/13 --25 ND ND ND 7.66 J ND ND NDug/L 11/12/13 --25 ND ND ND ND ND ND ND ug/L 05/13/14 --25 ND 3.02 J ND 8.66 J 3.76 J ND NDug/L 11/17/14 1.40 25 ND ND ND ND 3.82 J ND NDug/L 05/12/15 1.40 25 ND ND ND 35.3 14.5 J ND ND (Dissolved)ug/L 05/12/15 1.40 25 ------2.79 J ------ug/L 11/09/15 1.40 25 ND ND ND 13.4 J 9.06 J ND ND ug/L 05/10/16 1.40 25 ND ND 2.84 J 9.97 J 3.31 J ND NDug/L 11/07/16 1.40 25 ND ND ND 18.8 J 9.95 J ND NDug/L 05/09/17 1.40 25 ND ND ND 26.6 8.94 J ND ND (Dissolved)ug/L 05/09/17 1.40 25 ------ND ------ July 2017 Page 16 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Zinc ug/L 10/08/96 ----24 18 30.5 --------NC 2L = 1000 ug/L ug/L 02/18/97 --10 ND ND ND -------- EPA MCL = 5000 ug/L*ug/L 08/29/97 --50 ND ND ND --------ug/L 02/23/98 --5 ND ND 6.27 -------- ug/L 08/24/98 --5 ND ND ND -------- ug/L 02/22/99 --5 ND ND ND --------ug/L 08/23/99 --5 ND ND ND -------- ug/L 02/21/00 --5 ND 7.39 ND --------ug/L 07/12/01 --50 ND ND ND 413 ND ND -- ug/L 10/24/01 --20 ND ND ND ND ND 21 -- ug/L 05/28/02 --50 --------------ug/L 11/05/02 --50 -------------- ug/L 05/29/03 --50 --------------ug/L 11/05/03 --50 -------------- ug/L 05/25/04 --50 -------------- ug/L 11/23/04 --50 --------------ug/L 05/16/05 --50 -------------- ug/L 11/25/05 --50 --------------ug/L 05/24/06 --50 ------------ND ug/L 11/20/06 --50 ------------ND ug/L 05/22/07 --10 2.1 J 2.7 J 1.1 J 5.6 J 1.1 J 2.7 J NDug/L 11/14/07 --10 2.5 J 3.1 J ND 3.1 J 1.4 J 3.7 J ND ug/L 05/29/08 --10 2.0 B 4.8 B ND 4.3 B 1.6 B 3.9 B 1.8 Jug/L 11/17/08 --10 ND ND ND 13.5 B ND 3.9 B 4.6 J ug/L 05/27/09 --10 ND 6.0 J ND 6.4 J 7.4 J 9.4 J ND ug/L 11/11/09 --10 ND 7.45 J ND 4.86 J ND ND NDug/L 05/26/10 --10 ND 6.82 J ND 6.41 J ND 6.28 J ND ug/L 11/15/10 --10 ND ND ND 4.64 J ND ND NDug/L 05/09/11 --10 ND 6.43 J ND ND ND ND ND ug/L 11/14/11 --10 ND ND ND ND 3.85 J ND ND ug/L 05/08/12 --10 ND ND ND ND ND ND NDug/L 11/05/12 --10 ND ND 4.21 J ND ND ND ND ug/L 05/14/13 --10 ND 5.08 J ND ND ND ND NDug/L 11/12/13 --10 ND 4.47 J 5.26 J 4.80 J 4.14 J 7.92 J ND ug/L 05/13/14 --10 ND 4.60 J ND ND ND ND ND ug/L 11/17/14 3.80 10 ND ND ND 12.4 ND 4.26 J NDug/L 05/12/15 3.80 10 39.3 11.8 ND 16.5 7.85 J ND ND ug/L 11/09/15 3.80 10 ND ND ND 5.72 J 4.38 J ND NDug/L 05/10/16 3.80 10 ND ND ND 8.95 J ND 4.88 J ND ug/L 11/07/16 4.40 10 ND ND ND 12.7 49.9 23.6 ND ug/L 05/09/17 4.40 10 ND ND ND 13.8 7.27 J 6.44 J ND July 2017 Page 17 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Iron ug/L 10/08/96 --50 ND 1600 2600 --------NC 2L = 300 ug/L ug/L 02/18/97 --50 ND 4600 1100 -------- EPA MCL = 300 ug/L*ug/L 08/29/97 --50 ND 54500 2300 --------ug/L 02/23/98 --50 ND 53100 5380 -------- ug/L 08/24/98 --50 ND 79200 56000 -------- ug/L 02/22/99 --50 ND 63300 83600 --------ug/L 08/23/99 --50 311 76400 68600 -------- ug/L 02/21/00 --50 ND 73300 61400 --------ug/L 10/10/00 ------------------ ug/L 07/12/01 ------------------ ug/L 10/24/01 ------------------ug/L 05/28/02 ------------------ ug/L 11/05/02 ------------------ug/L 05/29/03 ------------------ ug/L 11/05/03 ------------------ ug/L 05/25/04 ------------------ug/L 11/23/04 ------------------ ug/L 05/16/05 ------------------ug/L 11/25/05 ------------------ ug/L 05/24/06 ------------------ ug/L 11/20/06 ------------------ug/L 05/22/07 --300 47 J 45900 39000 2020 ----ND ug/L 11/14/07 --300 154 J 23700 1430 961 77 B 637 20 Jug/L 05/29/08 --300 33 J 31200 32600 1590 333 702 ND ug/L 11/17/08 --300 31 J 22900 25000 6920 1130 600 ND ug/L 05/27/09 --300 ND 35300 28200 1950 251 J 660 NDug/L 11/11/09 --300 ND 17700 7120 2780 1280 533 ND ug/L 05/26/10 --300 ND 39600 34500 8530 1730 494 NDug/L 11/15/10 --300 ND 35600 11300 2070 417 531 26.2 J ug/L 05/09/11 --300 ND 34400 22000 133 J 323 640 ND ug/L 11/14/11 --300 46.8 J 15600 4840 124 J 1960 575 NDmg/L 05/08/12 --300 132 J 18200 4330 1540 1480 604 ND ug/L 11/05/12 --300 3540 21900 19100 472 1390 455 NDug/L 05/14/13 --300 275 J 13200 87.2 J 2880 245 J 508 ND ug/L 11/12/13 --300 628 18200 7460 295 J 526 556 ND ug/L 05/13/14 --300 ND 15900 12400 3110 1350 577 NDug/L 11/17/14 22.0 300 46.8 J 9570 1980 244 J 1080 2160 ND ug/L 05/12/15 22.0 300 32.3 B 13100 5730 14600 6850 604 58.3 Jug/L 11/09/15 22.0 300 ND 5920 4170 4930 3920 723 ND ug/L 05/10/16 22.0 300 52.7 J 34600 22300 3990 1510 939 ND ug/L 11/07/16 22.0 300 33.9 J 16500 794 7000 4640 700 NDug/L 05/09/17 22.0 300 ND 27100 13200 9570 3980 580 ND July 2017 Page 18 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Manganese ug/L 10/08/96 --10 ND ND 15 --------NC 2L = 50 ug/L ug/L 02/18/97 --10 ND 32 11 -------- EPA MCL = 50 ug/L*ug/L 08/29/97 --30 ND 118 ND --------ug/L 02/23/98 --10 ND 194 81.4 -------- ug/L 08/24/98 --23.3 ND 274 508 -------- ug/L 02/22/99 --10 ND 247 585 --------ug/L 08/23/99 --10 13.3 327 501 -------- ug/L 02/21/00 --10 ND 381 528 --------ug/L 02/22/00 ------------ ------ ug/L 10/10/00 ------------------ ug/L 07/12/01 ------------------ug/L 10/24/01 ------------------ ug/L 05/28/02 ------------------ug/L 11/05/02 ------------------ ug/L 05/29/03 ------------------ ug/L 11/05/03 ------------------ug/L 05/25/04 ------------------ ug/L 11/23/04 ------------------ug/L 05/16/05 ------------------ ug/L 11/25/05 ------------------ ug/L 05/24/06 ------------------ug/L 11/20/06 ------------------ ug/L 05/22/07 --50 15.0 J 274 371 21.9 J ----NDug/L 11/14/07 --50 14.9 J 212 29.4 J 23.1 J 69.2 23.2 J ND ug/L 05/29/08 --50 20.6 J 205 308 17.5 J 50.3 32.7 J ND ug/L 11/17/08 --50 15.4 J 228 410 17.3 J 12.3 J 24.4 J NDug/L 05/27/09 --50 10.4 J 204 391 15.7 J 33.7 J 32.6 J ND ug/L 11/11/09 --50 10.5 J 182 103 20.6 J 66.6 28.5 J ND ug/L 05/26/10 --50 12.5 J 218 315 14.2 J 12.9 J 23.2 J ND ug/L 11/15/10 --50 11.1 J 175 289 21.1 J 30.2 J 21.7 J ND ug/L 05/09/11 --50 17.1 J 210 323 14.8 J 47.7 J 26.4 J ND ug/L 11/14/11 --50 20.7 J 158 99.1 9.81 J 62.1 23.5 J ND mg/L 05/08/12 --50 16.8 J 112 132 11.6 J 61.8 24.5 J ND ug/L 11/05/12 --50 21.1 J 137 180 13.1 J 69.3 21.2 J ND ug/L 05/14/13 --50 19.0 J 113 26.0 J 9.35 J 33.6 J 20.7 J ND ug/L 11/12/13 --50 20.0 J 112 235 10.9 J 49.0 J 18.5 J ND ug/L 05/13/14 --50 25.2 J 162 231 13.5 J 24.7 J 18.9 J ND ug/L 11/17/14 1.10 50 27.5 J 98.3 66.5 26.2 J 56.5 22.3 J ND ug/L 05/12/15 1.10 50 21.5 J 88.8 199 21.4 J 13.4 J 21.8 J ND ug/L 11/09/15 1.10 50 26.1 J 182 131 10.7 J 11.5 J 27.0 J ND ug/L 05/10/16 1.10 50 30.0 J 221 422 26.7 J 14.4 J 18.3 J ND ug/L 11/07/16 1.10 50 17.7 J 141 186 24.2 J 17.9 J 21.2 J ND ug/L 05/09/17 1.10 50 16.5 J 203 275 29.2 J 11.4 J 20.1 J ND July 2017 Page 19 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Acetone ug/L 10/08/96 --100 ND ND ND -------- NC 2L = 6000 ug/L ug/L 02/18/97 --100 ND ND ND -------- No EPA MCL ug/L 08/29/97 --10 ND ND ND -------- ug/L 10/30/97 ------25.2 ---------- ug/L 02/23/98 --10 ND ND 11.4 -------- ug/L 08/24/98 ----1080 3860 521 -------- ug/L 02/22/99 --10 ND ND ND -------- ug/L 08/23/99 --5 ND ND 5.56 -------- ug/L 02/21/00 --10 ND 13.5 17.7 -------- ug/L 10/10/00 --100 ND ND ND ND ND ND -- ug/L 07/12/01 --100 ND ND ND ND ND ND -- ug/L 10/24/01 --100 ND ND ND ND ND ND -- ug/L 05/28/02 --100 ND ND ND ND ND ND -- ug/L 11/05/02 --100 ND ND ND ND ND ND -- ug/L 05/29/03 --100 ND ND ND ND ND ND -- ug/L 11/05/03 --100 ND ND ND ND ND ND -- ug/L 05/25/04 --100 ND ND ND ND ND ND -- ug/L 11/23/04 --100 ND ND ND ND ND ND -- ug/L 05/16/05 --100 ND ND ND ND ND ND -- ug/L 11/25/05 --100 ND ND ND ND ND ND -- ug/L 05/24/06 --100 ND ND ND ND ND ND ND ug/L 11/20/06 --100 ND ND ND ND ND ND ND ug/L 05/22/07 --100 ND 4.8 B 3.6 B 6.1 B ND ND 6.6 Jug/L 11/14/07 --100 ND ND ND ND ND ND ND ug/L 05/29/08 --100 2.2 B ND ND ND ND ND 2.9 Jug/L 11/17/08 --100 ND ND ND ND ND ND 9.8 Jug/L 05/27/09 --100 ND ND ND ND ND ND ND ug/L 11/11/09 --100 ND ND ND ND ND ND NDug/L 05/26/10 --100 ND ND ND ND ND ND NDug/L 11/15/10 --100 ND ND ND ND ND ND 9.2 J ug/L 05/09/11 --100 ND ND ND ND ND ND NDug/L 11/14/11 --100 ND ND ND ND ND ND NDug/L 05/08/12 --100 ND ND ND ND ND ND ND ug/L 11/05/12 --100 ND ND ND ND ND ND NDug/L 05/14/13 --100 ND ND ND ND ND ND NDug/L 11/12/13 --100 ND ND ND ND ND ND NDug/L 05/13/14 --100 ND ND ND ND ND ND NDug/L 11/17/14 1.20 100 ND ND ND ND ND ND ND ug/L 05/12/15 1.20 100 ND ND ND ND ND ND NDug/L 11/09/15 1.20 100 ND ND ND ND ND ND NDug/L 05/10/16 1.20 100 ND ND ND ND ND ND ND ug/L 11/07/16 10 100 ND ND ND ND ND ND NDug/L 05/09/17 10 100 ND ND ND ND ND ND ND July 2017 Page 20 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Benzene ug/L 10/08/96 ----ND ND ND -------- NC 2L = 1 ug/L ug/L 10/24/96 ------------------ EPA MCL = 5 ug/L ug/L 02/18/97 ----ND ND ND -------- ug/L 02/19/97 ------------------ ug/L 04/24/97 ------------------ ug/L 08/28/97 ------------------ ug/L 08/29/97 ----ND ND ND -------- ug/L 10/09/97 ------------------ ug/L 10/30/97 ------ND ---------- ug/L 02/23/98 ----ND ND ND -------- ug/L 02/24/98 ------------------ ug/L 04/20/98 ------------------ ug/L 08/24/98 ----ND ND ND -------- ug/L 10/27/98 ------------------ ug/L 02/22/99 ----ND ND ND -------- ug/L 04/20/99 ------------------ ug/L 08/23/99 ----ND ND ND -------- ug/L 08/24/99 ------------------ ug/L 01/11/00 ------------------ ug/L 02/21/00 ----ND ND ND -------- ug/L 02/22/00 ------------------ ug/L 10/10/00 ----ND ND ND ND ND ND -- ug/L 07/12/01 ----ND ND ND ND ND ND -- ug/L 10/24/01 ----ND ND ND ND ND ND -- ug/L 05/28/02 ----ND ND ND ND ND ND -- ug/L 11/05/02 ----ND ND ND ND ND ND -- ug/L 05/29/03 ----ND ND ND ND ND ND -- ug/L 11/05/03 ----ND ND ND ND ND ND -- ug/L 05/25/04 ----ND ND ND ND ND ND -- ug/L 11/23/04 ----ND ND ND ND ND ND -- ug/L 05/16/05 ----ND ND ND ND ND ND -- ug/L 11/25/05 ----ND ND ND ND ND ND -- ug/L 05/24/06 --5 ND ND ND ND ND ND NDug/L 11/20/06 --5 ND ND ND ND ND ND NDug/L 05/22/07 --1 ND ND ND ND ND ND ND ug/L 11/14/07 --1 ND ND ND ND ND ND NDug/L 05/29/08 --1 ND ND ND ND ND ND NDug/L 11/17/08 --1 ND ND ND ND ND ND ND ug/L 05/27/09 --1 ND ND ND ND ND ND NDug/L 11/11/09 --1 ND 0.77 J 0.72 J ND ND ND NDug/L 05/26/10 --1 ND ND ND ND ND ND NDug/L 11/15/10 --1 ND ND ND ND ND ND NDug/L 05/09/11 --1 ND ND ND ND ND ND ND ug/L 11/14/11 --1 ND ND ND ND ND ND NDug/L 05/08/12 --1 ND ND ND ND ND ND NDug/L 11/05/12 --1 ND ND ND ND ND ND ND ug/L 05/14/13 --1 ND ND ND ND ND ND NDug/L 11/12/13 --1 ND ND ND ND ND ND NDug/L 05/13/14 --1 ND ND ND ND ND ND ND ug/L 11/17/14 0.15 1 ND ND ND ND ND ND NDug/L 05/12/15 0.15 1 ND ND ND ND ND ND NDug/L 11/09/15 0.15 1 ND ND ND ND ND ND NDug/L 05/10/16 0.15 1 ND ND ND ND ND ND NDug/L 11/07/16 0.15 1 ND ND ND ND ND ND ND ug/L 05/09/17 0.15 1 ND ND ND ND ND ND ND July 2017 Page 21 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Chloroethane ug/L 10/08/96 --10 ND ND ND -------- NC 2L = 3000 ug/L ug/L 02/18/97 --10 ND ND ND -------- No EPA MCL ug/L 08/29/97 --2 ND ND ND -------- ug/L 10/30/97 --2 --ND ---------- ug/L 02/23/98 --2 ND ND ND -------- ug/L 08/24/98 --1 ND 1.47 1.36 -------- ug/L 02/22/99 --2 ND ND 2.17 -------- ug/L 08/23/99 --1 ND 1.93 1.2 -------- ug/L 02/21/00 --2 ND ND ND -------- ug/L 10/10/00 --10 ND ND ND ND ND ND -- ug/L 07/12/01 --10 ND ND ND ND ND ND -- ug/L 10/24/01 --10 ND ND ND ND ND ND -- ug/L 05/28/02 --10 ND ND ND ND ND ND -- ug/L 11/05/02 --10 ND ND ND ND ND ND -- ug/L 05/29/03 --10 ND ND ND ND ND ND -- ug/L 11/05/03 --10 ND ND ND ND ND ND -- ug/L 05/25/04 --10 ND ND ND ND ND ND -- ug/L 11/23/04 --10 ND ND ND ND ND ND -- ug/L 05/16/05 --10 ND ND ND ND ND ND -- ug/L 11/25/05 --10 ND ND ND ND ND ND -- ug/L 05/24/06 --10 ND ND ND ND ND ND ND ug/L 11/20/06 --10 ND ND ND ND ND ND ND ug/L 05/22/07 --10 ND ND ND ND ND ND ND ug/L 11/14/07 --10 ND ND ND ND ND ND ND ug/L 05/29/08 --10 ND ND ND ND ND ND ND ug/L 11/17/08 --10 ND ND ND ND ND ND ND ug/L 05/27/09 --10 ND ND ND ND ND ND ND ug/L 11/11/09 --10 ND ND ND ND ND ND ND ug/L 05/26/10 --10 ND ND ND ND ND ND ND ug/L 11/15/10 --10 ND ND ND ND ND ND ND ug/L 05/09/11 --10 ND ND ND ND ND ND ND ug/L 11/14/11 --10 ND ND ND ND ND ND ND ug/L 05/08/12 --10 ND ND ND ND ND ND ND ug/L 11/05/12 --10 ND ND ND ND ND ND ND ug/L 05/14/13 --10 ND ND ND ND ND ND ND ug/L 11/12/13 --10 ND ND ND ND ND ND ND ug/L 05/13/14 --10 ND ND ND ND ND ND ND ug/L 11/17/14 0.23 10 ND ND ND ND ND ND ND ug/L 05/12/15 0.23 10 ND ND ND ND ND ND ND ug/L 11/09/15 0.23 10 ND ND ND ND ND ND ND ug/L 05/10/16 0.23 10 ND ND ND ND ND ND ND ug/L 11/07/16 0.23 10 ND ND ND ND ND ND ND ug/L 05/09/17 0.23 10 ND ND ND ND ND ND ND July 2017 Page 22 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Chloroform ug/L 10/08/96 --5 ND ND ND -------- NC 2L = 70 ug/L ug/L 02/18/97 --5 ND ND ND -------- EPA MCL = 80 ug/L ug/L 08/29/97 --2 ND ND ND -------- ug/L 10/30/97 --2 --ND ---------- ug/L 02/23/98 --2 ND ND ND -------- ug/L 08/24/98 --1 ND ND ND -------- ug/L 02/22/99 --2 ND ND ND -------- ug/L 08/23/99 --1 ND ND ND -------- ug/L 02/21/00 --2 ND ND ND -------- ug/L 10/10/00 --5 ND ND ND ND ND ND -- ug/L 07/12/01 --5 ND ND ND ND ND ND -- ug/L 10/24/01 --5 ND ND ND ND ND ND -- ug/L 05/28/02 --5 ND ND ND ND ND ND --ug/L 11/05/02 --5 ND ND ND ND ND ND -- ug/L 05/29/03 --5 ND ND ND ND ND ND --ug/L 11/05/03 --5 ND ND ND ND ND 18.4 --ug/L 05/25/04 --5 ND ND ND ND ND ND --ug/L 11/23/04 --5 ND ND ND ND ND ND --ug/L 05/16/05 --5 ND ND ND ND ND ND -- ug/L 11/25/05 --5 ND ND ND ND ND ND --ug/L 05/24/06 --5 ND ND ND ND ND ND NDug/L 11/20/06 --5 ND ND ND ND ND ND ND ug/L 05/22/07 --5 ND ND ND ND ND ND NDug/L 11/14/07 --5 ND ND ND ND ND ND NDug/L 05/29/08 --5 ND ND ND ND ND ND ND ug/L 11/17/08 --5 ND ND ND ND ND ND NDug/L 05/27/09 --5 ND ND ND ND ND ND NDug/L 11/11/09 --5 ND ND ND ND ND ND ND ug/L 05/26/10 --5 ND ND ND ND ND ND NDug/L 11/15/10 --5 ND ND ND ND ND ND NDug/L 05/09/11 --5 ND ND ND ND ND ND NDug/L 11/14/11 --5 ND ND ND ND ND ND NDug/L 05/08/12 --5 ND ND ND ND ND ND ND ug/L 11/05/12 --5 ND ND ND ND ND ND NDug/L 05/14/13 --5 ND ND ND ND ND ND NDug/L 11/12/13 --5 ND ND ND ND ND ND ND ug/L 05/13/14 --5 ND ND ND ND ND ND NDug/L 11/17/14 0.18 5 ND ND ND ND ND ND NDug/L 05/12/15 0.18 5 ND ND ND ND ND ND ND ug/L 11/09/15 0.18 5 ND ND ND ND ND ND NDug/L 05/10/16 0.18 5 ND ND ND ND ND ND NDug/L 11/07/16 0.18 5 ND ND ND ND ND ND NDug/L 05/09/17 0.18 5 ND ND ND ND ND ND ND July 2017 Page 23 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date 1,2-Dichloropropane ug/L 10/08/96 --5 ND ND ND --------NC 2L = 0.6 ug/L ug/L 02/18/97 --5 ND ND ND -------- EPA MCL = 5 ug/L ug/L 08/29/97 --2 ND ND ND --------ug/L 10/30/97 --2 --ND ----------ug/L 02/23/98 --2 ND ND ND --------ug/L 08/24/98 --1 ND 24.1 ND --------ug/L 02/22/99 --2 ND ND ND -------- ug/L 08/23/99 --1 ND ND ND --------ug/L 02/21/00 --2 ND ND ND --------ug/L 10/10/00 --5 ND ND ND ND ND ND -- ug/L 07/12/01 --5 ND ND ND ND ND ND --ug/L 10/24/01 --5 ND ND ND ND ND ND --ug/L 05/28/02 --5 ND ND ND ND ND ND -- ug/L 11/05/02 --5 ND ND ND ND ND ND --ug/L 05/29/03 --5 ND ND ND ND ND ND --ug/L 11/05/03 --5 ND ND ND ND ND ND --ug/L 05/25/04 --5 ND ND ND ND ND ND --ug/L 11/23/04 --5 ND ND ND ND ND ND -- ug/L 05/16/05 --5 ND ND ND ND ND ND --ug/L 11/25/05 --5 ND ND ND ND ND ND --ug/L 05/24/06 --5 ND ND ND ND ND ND ND ug/L 11/20/06 --5 ND ND ND ND ND ND NDug/L 05/22/07 --1 ND ND ND ND ND ND NDug/L 11/14/07 --1 ND ND ND ND ND ND ND ug/L 05/29/08 --1 ND ND ND ND ND ND NDug/L 11/17/08 --1 ND ND ND ND ND ND NDug/L 05/27/09 --1 ND ND ND ND ND ND ND ug/L 11/11/09 --1 ND ND ND ND ND ND NDug/L 05/26/10 --1 ND ND ND ND ND ND NDug/L 11/15/10 --1 ND ND ND ND ND ND NDug/L 05/09/11 --1 ND ND ND ND ND ND NDug/L 11/14/11 --1 ND ND ND ND ND ND ND ug/L 05/08/12 --1 ND ND ND ND ND ND NDug/L 11/05/12 --1 ND ND ND ND ND ND NDug/L 05/14/13 --1 ND ND ND ND ND ND ND ug/L 11/12/13 --1 ND ND ND ND ND ND NDug/L 05/13/14 --1 ND ND ND ND ND ND NDug/L 11/17/14 0.10 1 ND ND ND ND ND ND ND ug/L 05/12/15 0.10 1 ND ND ND ND ND ND NDug/L 11/09/15 0.10 1 ND ND ND ND ND ND NDug/L 05/10/16 0.10 1 ND ND ND ND ND ND NDug/L 11/07/16 0.10 1 ND ND ND ND ND ND NDug/L 05/09/17 0.10 1 ND ND ND ND ND ND ND July 2017 Page 24 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Chloromethane ug/L 05/16/05 ----ND ND ND ND ND ND -- NC 2L = 3 ug/L ug/L 11/25/05 ----ND ND ND ND ND ND --No EPA MCL ug/L 05/24/06 --10 ND ND ND ND ND ND NDug/L 11/20/06 --10 ND ND ND ND ND ND ND ug/L 05/22/07 --1 ND ND ND ND ND ND NDug/L 11/14/07 --1 ND ND ND ND ND ND NDug/L 05/29/08 --1 ND ND ND ND ND ND NDug/L 11/17/08 --1 ND ND ND ND ND ND NDug/L 05/27/09 --1 ND ND ND ND ND ND ND ug/L 11/11/09 --1 ND ND ND ND ND ND NDug/L 05/26/10 --1 ND ND ND ND ND ND NDug/L 11/15/10 --1 ND ND ND ND ND ND ND ug/L 05/09/11 --1 ND ND ND ND ND ND NDug/L 11/14/11 --1 ND ND ND ND ND ND NDug/L 05/08/12 --1 ND ND ND ND ND ND ND ug/L 11/05/12 --1 ND ND ND ND ND ND NDug/L 05/14/13 --1 ND ND ND ND ND ND NDug/L 11/12/13 --1 ND ND ND ND ND ND NDug/L 05/13/14 --1 ND ND ND ND ND ND NDug/L 11/17/14 --1 ND ND ND ND ND ND ND ug/L 05/12/15 --1 ND ND ND ND ND ND NDug/L 11/09/15 --1 ND ND ND ND ND ND NDug/L 05/10/16 1 ND ND ND ND ND ND ND ug/L 11/07/16 0.13 1 ND ND ND 0.84 J ND ND NDug/L 05/09/17 0.13 1 ND ND ND ND ND ND ND July 2017 Page 25 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date 2-Butanone ug/L 10/08/96 --100 ND ND ND -------- NC 2L = 4000 ug/L ug/L 02/18/97 --100 ND ND ND --------No EPA MCL ug/L 08/29/97 --10 ND 12.5 ND --------ug/L 10/30/97 ------13.5 ---------- ug/L 02/23/98 --10 ND ND ND --------ug/L 08/24/98 --5.9 ND ND ND --------ug/L 02/22/99 --10 ND ND ND --------ug/L 08/23/99 --10 ND ND ND --------ug/L 02/21/00 --10 ND ND ND -------- ug/L 10/10/00 --100 ND ND ND ND ND ND --ug/L 07/12/01 --100 ND ND ND ND ND ND --ug/L 10/24/01 --100 ND ND ND ND ND ND -- ug/L 05/28/02 --100 ND ND ND ND ND ND --ug/L 11/05/02 --100 ND ND ND ND ND ND --ug/L 05/29/03 --100 ND ND ND ND ND ND -- ug/L 11/05/03 --100 ND ND ND ND ND ND --ug/L 05/25/04 --100 ND ND ND ND ND ND --ug/L 11/23/04 --100 ND ND ND ND ND ND --ug/L 05/16/05 --100 ND ND ND ND ND ND --ug/L 11/25/05 --100 ND ND ND ND ND ND -- ug/L 05/24/06 --100 ND ND ND ND ND ND NDug/L 11/20/06 --100 ND ND ND ND ND ND NDug/L 05/22/07 --100 ND ND ND ND ND ND ND ug/L 11/14/07 --100 ND ND ND ND ND ND NDug/L 05/29/08 --100 ND ND ND ND ND ND NDug/L 11/17/08 --100 ND ND ND ND ND ND ND ug/L 05/27/09 --100 ND ND ND ND ND ND NDug/L 11/11/09 --100 ND ND ND ND ND ND NDug/L 05/26/10 --100 ND ND ND ND ND ND ND ug/L 11/15/10 --100 ND ND ND ND ND ND 6.4 Jug/L 05/09/11 --100 ND ND ND ND ND ND NDug/L 11/14/11 --100 ND ND ND ND ND ND NDug/L 05/08/12 --100 ND ND ND ND ND ND NDug/L 11/05/12 --100 ND ND ND ND ND ND ND ug/L 05/14/13 --100 ND ND ND ND ND ND NDug/L 11/12/13 --100 ND ND ND ND ND ND NDug/L 05/13/14 --100 ND ND ND ND ND ND ND ug/L 11/17/14 1.30 100 ND ND ND ND ND ND NDug/L 05/12/15 1.30 100 ND ND ND ND ND ND NDug/L 11/09/15 1.30 100 ND ND ND ND ND ND ND ug/L 05/10/16 1.30 100 ND ND ND ND ND ND NDug/L 11/07/16 1.30 100 ND ND ND ND ND ND NDug/L 05/09/17 1.30 100 ND ND ND ND ND ND ND July 2017 Page 26 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Tetrachloroethene ug/L 10/08/96 ----ND ND ND -------- NC 2L = 0.7 ug/L ug/L 10/24/96 ------------------ EPA MCL = 5 ug/L ug/L 02/18/97 ----ND ND ND -------- ug/L 02/19/97 ------------------ ug/L 04/24/97 ------------------ ug/L 08/28/97 ------------------ ug/L 08/29/97 ----ND ND ND -------- ug/L 10/09/97 ------------------ ug/L 10/30/97 ------ND ---------- ug/L 02/23/98 ----ND ND ND -------- ug/L 02/24/98 ------------------ ug/L 04/20/98 ------------------ ug/L 08/24/98 ----ND ND ND -------- ug/L 10/27/98 ------------------ ug/L 02/22/99 ----ND ND ND -------- ug/L 04/20/99 ------------------ ug/L 08/23/99 ----ND ND ND -------- ug/L 08/24/99 ------------------ ug/L 01/11/00 ------------------ ug/L 02/21/00 ----ND ND ND -------- ug/L 02/22/00 ------------------ ug/L 10/10/00 ----ND ND ND ND ND ND -- ug/L 07/12/01 ----ND ND ND ND ND ND -- ug/L 10/24/01 ----ND ND ND ND ND ND -- ug/L 05/28/02 ----ND ND ND ND ND ND -- ug/L 11/05/02 ----ND ND ND ND ND ND -- ug/L 05/29/03 ----ND ND ND ND ND ND -- ug/L 11/05/03 ----ND ND ND ND ND ND -- ug/L 05/25/04 ----ND ND ND ND ND ND -- ug/L 11/23/04 ----ND ND ND ND ND ND -- ug/L 05/16/05 ----ND ND ND ND ND ND -- ug/L 11/25/05 ----ND ND ND ND ND ND -- ug/L 05/24/06 --5 ND ND ND ND ND ND ND ug/L 11/20/06 --5 ND ND ND ND ND ND ND ug/L 05/22/07 --1 ND ND ND ND ND ND ND ug/L 11/14/07 --1 ND ND ND ND ND ND ND ug/L 05/29/08 --1 0.53 J ND ND ND ND ND ND ug/L 11/17/08 --1 ND ND ND ND ND ND ND ug/L 05/27/09 --1 ND ND ND ND ND ND ND ug/L 11/11/09 --1 ND ND ND ND ND ND ND ug/L 05/26/10 --1 ND ND ND ND ND ND NDug/L 11/15/10 --1 ND ND ND ND ND ND NDug/L 05/09/11 --1 ND ND ND ND ND ND ND ug/L 11/14/11 --1 ND ND ND ND ND ND NDug/L 05/08/12 --1 ND ND ND ND ND ND NDug/L 11/05/12 --1 ND ND ND ND ND ND ND ug/L 05/14/13 --1 ND ND ND ND ND ND NDug/L 11/12/13 --1 ND ND ND ND ND ND NDug/L 05/13/14 --1 ND ND ND ND ND ND ND ug/L 11/17/14 0.17 1 ND ND ND ND ND ND NDug/L 05/12/15 0.17 1 ND ND ND ND ND ND NDug/L 11/09/15 0.17 1 ND ND ND ND ND ND NDug/L 05/10/16 0.17 1 ND ND ND ND ND ND NDug/L 11/07/16 0.17 1 ND ND ND ND ND ND ND ug/L 05/09/17 0.17 1 ND ND ND ND ND ND ND July 2017 Page 27 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Toluene ug/L 10/08/96 --5 ND ND ND -------- NC 2L = 600 ug/L ug/L 02/18/97 --5 ND ND ND --------EPA MCL = 1000 ug/L ug/L 08/29/97 --2 ND 15.1 ND --------ug/L 10/30/97 ------19.9 ---------- ug/L 02/23/98 --2 ND 3.76 ND --------ug/L 08/24/98 --1 ND ND 4.21 --------ug/L 02/22/99 --2 ND ND ND --------ug/L 08/23/99 --1 ND ND ND --------ug/L 02/21/00 --2 ND ND ND -------- ug/L 10/10/00 --5 ND ND ND ND ND ND --ug/L 07/12/01 --5 ND ND ND ND ND ND --ug/L 10/24/01 --5 ND ND ND ND ND ND -- ug/L 05/28/02 --5 ND ND ND ND ND ND --ug/L 11/05/02 --5 ND ND ND ND ND ND --ug/L 05/29/03 --5 ND ND ND ND ND ND -- ug/L 11/05/03 --5 ND ND ND ND ND ND --ug/L 05/25/04 --5 ND ND ND ND ND ND --ug/L 11/23/04 --5 ND ND ND ND ND ND --ug/L 05/16/05 --5 ND ND ND ND ND ND --ug/L 11/25/05 --5 ND ND ND ND ND ND -- ug/L 05/24/06 --5 ND ND ND ND ND ND NDug/L 11/20/06 --5 ND ND ND ND ND ND NDug/L 05/22/07 --1 ND ND ND ND ND ND ND ug/L 11/14/07 --1 ND ND ND ND ND ND NDug/L 05/29/08 --1 ND ND ND ND ND ND NDug/L 11/17/08 --1 ND ND ND ND ND ND ND ug/L 05/27/09 --1 ND ND ND ND ND ND NDug/L 11/11/09 --1 ND ND ND ND ND ND NDug/L 05/26/10 --1 ND ND ND ND ND ND ND ug/L 11/15/10 --1 ND ND ND ND ND ND NDug/L 05/09/11 --1 ND ND ND ND ND ND NDug/L 11/14/11 --1 ND ND ND ND ND ND NDug/L 05/08/12 --1 ND ND ND ND ND ND NDug/L 11/05/12 --1 ND ND ND ND ND ND ND ug/L 05/14/13 --1 ND ND ND ND ND ND NDug/L 11/12/13 --1 ND ND ND ND ND ND NDug/L 05/13/14 --1 ND ND ND ND ND ND ND ug/L 11/17/14 0.14 1 ND ND ND ND ND ND NDug/L 05/12/15 0.14 1 ND ND ND ND ND ND NDug/L 11/09/15 0.14 1 ND ND ND ND ND ND ND ug/L 05/10/16 0.14 1 ND ND ND ND ND ND NDug/L 11/07/16 0.14 1 ND ND ND ND ND ND NDug/L 05/09/17 0.14 1 ND ND ND ND ND ND ND July 2017 Page 28 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Trichlorofluoromethane ug/L 10/08/96 --5 ND ND ND -------- NC 2L = 2000 ug/L ug/L 02/18/97 --5 ND ND ND --------No EPA MCL ug/L 08/29/97 --2 ND ND 2.11 --------ug/L 10/30/97 --2 --ND ---------- ug/L 02/23/98 --2 ND ND ND --------ug/L 08/24/98 --1.7 ND ND ND --------ug/L 02/22/99 --10 ND ND ND --------ug/L 08/23/99 --5 ND ND ND --------ug/L 02/21/00 --2 ND ND ND -------- ug/L 10/10/00 --5 ND ND ND ND ND ND --ug/L 07/12/01 --5 ND ND ND ND ND ND --ug/L 10/24/01 --5 ND ND ND ND ND ND -- ug/L 05/28/02 --5 ND ND ND ND ND ND --ug/L 11/05/02 --5 ND ND ND ND ND ND --ug/L 05/29/03 --5 ND ND ND ND ND ND --ug/L 11/05/03 --5 ND ND ND ND ND ND --ug/L 05/25/04 --5 ND ND ND ND ND ND --ug/L 11/23/04 --5 ND ND ND ND ND ND --ug/L 05/16/05 --5 ND ND ND ND ND ND --ug/L 11/25/05 --5 ND ND ND ND ND ND -- ug/L 05/24/06 --5 ND ND ND ND ND ND NDug/L 11/20/06 --5 ND ND ND ND ND ND NDug/L 05/22/07 --1 ND ND ND ND ND ND NDug/L 11/14/07 --1 ND ND ND ND ND ND ND ug/L 05/29/08 --1 ND ND ND ND ND ND NDug/L 11/17/08 --1 ND ND ND ND ND ND NDug/L 05/27/09 --1 ND ND ND ND ND ND NDug/L 11/11/09 --1 ND ND ND ND ND ND ND ug/L 05/26/10 --1 ND ND ND ND ND ND NDug/L 11/15/10 --1 ND ND ND ND ND ND NDug/L 05/09/11 --1 ND ND ND ND ND ND NDug/L 11/14/11 --1 ND ND ND ND ND ND ND ug/L 05/08/12 --1 ND ND ND ND ND ND NDug/L 11/05/12 --1 ND ND ND ND ND ND NDug/L 05/14/13 --1 ND ND ND ND ND ND NDug/L 11/12/13 --1 ND ND ND ND ND ND ND ug/L 05/13/14 --1 ND ND ND ND ND ND NDug/L 11/17/14 0.24 1 ND ND ND ND ND ND NDug/L 05/12/15 0.24 1 ND ND ND ND ND ND NDug/L 11/09/15 0.24 1 ND ND ND ND ND ND NDug/L 05/10/16 0.24 1 ND ND ND ND ND ND NDug/L 11/07/16 0.24 1 ND ND ND ND ND ND NDug/L 05/09/17 0.24 1 ND ND ND ND ND ND ND July 2017 Page 29 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Vinyl chloride ug/L 10/08/96 --10 ND ND ND --------NC 2L = 0.03 ug/L ug/L 02/18/97 --10 ND ND ND -------- EPA MCL = 2 ug/L ug/L 08/29/97 --2 ND ND ND -------- ug/L 10/30/97 --2 --ND ---------- ug/L 02/23/98 --2 ND ND ND --------ug/L 08/24/98 --1 ND ND ND -------- ug/L 02/22/99 --2 ND ND ND --------ug/L 08/23/99 --1 ND 4.75 9.09 --------ug/L 02/21/00 --2 ND ND ND --------ug/L 10/10/00 --10 ND ND ND ND ND ND --ug/L 07/12/01 --10 ND ND ND ND ND ND --ug/L 10/24/01 --10 ND ND ND ND ND ND --ug/L 05/28/02 --10 ND ND ND ND ND ND -- ug/L 11/05/02 --10 ND ND ND ND ND ND --ug/L 05/29/03 --10 ND ND ND ND ND ND --ug/L 11/05/03 --10 ND ND ND ND ND ND --ug/L 05/25/04 --10 ND ND ND ND ND ND -- ug/L 11/23/04 --10 ND ND ND ND ND ND --ug/L 05/16/05 --10 ND ND ND ND ND ND --ug/L 11/25/05 --10 ND ND ND ND ND ND --ug/L 05/24/06 --10 ND ND ND ND ND ND ND ug/L 11/20/06 --10 ND ND ND ND ND ND NDug/L 05/22/07 --1 ND ND ND ND ND ND NDug/L 11/14/07 --1 ND ND ND ND ND ND NDug/L 05/29/08 --1 ND ND ND ND ND ND ND ug/L 11/17/08 --1 ND ND ND ND ND ND NDug/L 05/27/09 --1 ND ND ND ND ND ND NDug/L 11/11/09 --1 ND ND ND ND ND ND NDug/L 05/26/10 --1 ND ND ND ND ND ND ND ug/L 11/15/10 --1 ND ND ND ND ND ND NDug/L 05/09/11 --1 ND ND ND ND ND ND NDug/L 11/14/11 --1 ND ND ND ND ND ND NDug/L 05/08/12 --1 ND ND ND ND ND ND NDug/L 11/05/12 --1 ND ND ND ND ND ND NDug/L 05/14/13 --1 ND ND ND ND ND ND NDug/L 11/12/13 --1 ND ND ND ND ND ND NDug/L 05/13/14 --1 ND ND ND ND ND ND NDug/L 11/17/14 0.32 1 ND ND ND ND ND ND ND ug/L 05/12/15 0.32 1 ND ND ND ND ND ND NDug/L 11/09/15 0.32 1 ND ND ND ND ND ND NDug/L 05/10/16 0.32 1 ND ND ND ND ND ND NDug/L 11/07/16 0.32 1 ND ND ND ND ND ND ND ug/L 05/09/17 0.32 1 ND ND ND ND ND ND ND July 2017 Page 30 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Xylenes (Total)ug/L 10/08/96 --5 ND ND ND --------NC 2L = 500 ug/L ug/L 02/18/97 --5 ND ND ND -------- EPA MCL = 10000 ug/L ug/L 08/29/97 --4 ND ND ND --------ug/L 10/30/97 --4 --ND ----------ug/L 02/23/98 --4 ND ND ND --------ug/L 08/24/98 --2 ND ND 2.08 -------- ug/L 02/22/99 --2 ND ND ND --------ug/L 08/23/99 --2 ND ND ND --------ug/L 02/21/00 --6 ND ND ND --------ug/L 10/10/00 --5 ND ND ND ND ND ND -- ug/L 07/12/01 --5 ND ND ND ND ND ND --ug/L 10/24/01 --5 ND ND ND ND ND ND --ug/L 05/28/02 --5 ND ND ND ND ND ND --ug/L 11/05/02 --5 ND ND ND ND ND ND -- ug/L 05/29/03 --5 ND ND ND ND ND ND --ug/L 11/05/03 --5 ND ND ND ND ND 5.9 --ug/L 05/25/04 --5 ND ND ND ND ND ND --ug/L 11/23/04 --5 ND ND ND ND ND ND -- ug/L 05/16/05 --5 ND ND ND ND ND ND --ug/L 11/25/05 --5 ND ND ND ND ND ND --ug/L 05/24/06 --5 ND ND ND ND ND ND NDug/L 11/20/06 --5 ND ND ND ND ND ND NDug/L 05/22/07 --5 ND ND ND ND ND ND NDug/L 11/14/07 --5 ND ND ND ND ND ND NDug/L 05/29/08 --5 ND ND ND ND ND ND NDug/L 11/17/08 --5 ND ND ND ND ND ND NDug/L 05/27/09 --5 ND ND ND ND ND ND ND ug/L 11/11/09 --5 ND ND ND ND ND ND NDug/L 05/26/10 --5 ND ND ND ND ND ND NDug/L 11/15/10 --5 ND ND ND ND ND ND NDug/L 05/09/11 --5 ND ND ND ND ND ND ND ug/L 11/14/11 --5 ND ND ND ND ND ND NDug/L 05/08/12 --5 ND ND ND ND ND ND NDug/L 11/05/12 --5 ND ND ND ND ND ND NDug/L 05/14/13 --5 ND ND ND ND ND ND ND ug/L 11/12/13 --5 ND ND ND ND ND ND NDug/L 05/13/14 --5 ND ND ND ND ND ND NDug/L 11/17/14 0.45 5 ND ND ND ND ND ND NDug/L 05/12/15 0.45 5 ND ND ND ND ND ND ND ug/L 11/09/15 0.45 5 ND ND ND ND ND ND NDug/L 05/10/16 0.45 5 ND ND ND ND ND ND NDug/L 11/07/16 0.45 5 ND ND ND ND ND ND NDug/L 05/09/17 0.45 5 ND ND ND ND ND ND ND Tetrahydrofuran ug/L 05/09/11 ----ND ND 1.2 ND ND ND ND(no standard)ug/L 11/14/11 ----ND ND ND ND ND ND NDNo EPA MCL ug/L 05/08/12 ----ND ND ND ND ND ND NDug/L 11/05/12 ----ND ND ND ND ND ND NDug/L 05/14/13 ----ND ND ND ND ND ND NDug/L 11/12/13 ----ND ND ND ND ND ND NDug/L 05/13/14 ----ND ND ND ND ND ND NDug/L 11/17/14 0.80 --ND ND ND ND ND ND NDug/L 05/12/15 0.80 --ND ND ND ND ND ND ND ug/L 11/09/15 0.80 --ND ND ND ND ND ND NDug/L 05/10/16 0.80 --ND ND ND ND ND ND NDug/L 11/07/16 0.80 --ND ND ND ND ND ND NDug/L 05/09/17 0.80 --ND ND ND ND ND ND ND July 2017 Page 31 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Chloride mg/L 10/08/96 ----2.2 4.2 3.7 --------NC 2L = 250 mg/L mg/L 02/18/97 ----2.4 36 1.7 -------- EPA MCL = 250 mg/L mg/L 08/29/97 ----2.03 194 12.4 --------mg/L 02/23/98 ----3.37 186 74.1 --------mg/L 08/24/98 ----3.01 252 271 --------mg/L 02/22/99 ----3.25 212 258 -------- mg/L 08/23/99 ----4.49 192 254 --------mg/L 05/22/07 ----11 43 71 0.7 ----NDmg/L 11/14/07 ----10 62 93 20 6.3 3.3 J NDmg/L 05/29/08 ----5.9 B 37 67 5.9 B 3.7 B 2.5 B 1.9 J mg/L 11/17/08 ----5.1 33 44 7.4 1.2 J 1.8 J NDmg/L 05/27/09 ----7.9 29 42 9.5 4.3 J 3.6 J NDmg/L 11/11/09 ----7.6 31 42 12 5.5 3.7 J NDmg/L 05/26/10 ----6.0 40 43 8.9 3.8 J 3.7 J ND mg/L 11/15/10 ----8.5 B 29 29 13 4.3 B 3.4 B 1.9 Jmg/L 05/09/11 ----26 29 34 9.4 B 4.3 B 3.3 B 1.9 Jmg/L 11/14/11 ----57 27 77 8.6 4.6 B 3.0 B 1.5 Jmg/L 05/08/12 ----43 26 130 7.5 4.3 B 2.9 B 1.2 J mg/L 11/05/12 ----72 36 140 14 6.1 B 3.1 B 1.4 Jmg/L 05/14/13 ----49 21 160 3.6 3.2 3.1 NDmg/L 11/12/13 ----37 20 130 12 5.4 3.0 J NDmg/L 05/13/14 ----150 9.1 97 3.3 J 3.0 J 3.1 J NDmg/L 11/17/14 2.2 --79 15 110 43 5.2 3.5 J NDmg/L 05/12/15 2.2 --21 11 97 3.2 J 2.4 J 3.7 J NDmg/L 11/09/15 2.2 --48 110 70 5.5 ND 2.3 J NDmg/L 05/10/16 2.2 --81 17 41 56 2.8 J 2.2 J NDmg/L 11/07/16 2.2 --89 14 75 27 ND 2.4 J ND mg/L 05/09/17 2.2 --71 25 27 42 2.4 J 2.3 J NDTotal Dissolved Solids mg/L 10/08/96 ----140 130 160 --------NC 2L = 1000 mg/L mg/L 02/18/97 ----10 54 22 --------No EPA MCL mg/L 08/29/97 ----22 403 54 -------- mg/L 02/23/98 ----30 452 233 --------mg/L 08/24/98 ----27 638 830 --------mg/L 02/22/99 ----36 563 1120 --------mg/L 08/23/99 ----30 556 1150 -------- mg/L 05/22/07 ----28 470 860 120 ----NDmg/L 11/14/07 ----78 570 830 180 62 44 NDmg/L 05/29/08 ----48 430 900 140 40 40 NDmg/L 11/17/08 ----38 390 890 150 32 50 ND mg/L 05/27/09 ----36 370 950 160 50 44 NDmg/L 11/11/09 ----52 360 870 160 62 18 NDmg/L 05/26/10 ----36 530 970 200 58 40 NDmg/L 11/15/10 ----18 370 1000 150 22 18 ND mg/L 05/09/11 ----110 440 940 110 50 50 NDmg/L 11/14/11 ----94 300 830 64 36 30 NDmg/L 05/08/12 ----130 290 1000 56 26 46 NDmg/L 11/05/12 ----130 320 920 48 24 10 NDmg/L 05/14/13 ----200 300 890 140 54 76 NDmg/L 11/12/13 ----110 300 890 38 46 24 NDmg/L 05/13/14 ----40 170 840 58 22 22 NDmg/L 11/17/14 10 --160 250 970 100 24 10 NDmg/L 05/12/15 10 --56 160 850 260 86 ND ND mg/L 11/09/15 10 --100 230 880 110 ND ND NDmg/L 05/10/16 10 --170 340 820 210 ND ND NDmg/L 11/07/16 50 --200 280 1000 250 68 ND NDmg/L 05/09/17 50 --140 400 810 270 96 ND ND July 2017 Page 32 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Sulfate mg/L 10/08/96 --1 5.01 --7.8 --------NC 2L = 250 mg/L mg/L 02/18/97 --5 5.9 --9.6 -------- No EPA MCL mg/L 08/29/97 --1 14.9 4.4 7.66 --------mg/L 02/23/98 --0.2 74.9 7.24 4.22 --------mg/L 08/24/98 --0.2 46.8 8.16 2.63 --------mg/L 02/22/99 --0.2 43.8 19.3 6.05 -------- mg/L 08/23/99 --0.2 3.14 21.7 1.11 --------mg/L 05/22/07 --250 2.9 B 180 50 48 ----2.5 Jmg/L 11/14/07 --250 1.6 J 110 J 110 J 55 J 8.6 J 4.8 J NDmg/L 05/29/08 --250 4.8 J 110 J 100 J 55 J 12 J 6.9 J ND mg/L 11/17/08 --250 5.3 J 100 J 35 J 30 J 6.9 J 8.4 J NDmg/L 05/27/09 --250 5.0 J 100 J 36 J 50 J 10 J 8.6 J NDmg/L 11/11/09 --250 3.3 J 79 J 80 J 53 J 12 J 8.1 J NDmg/L 05/26/10 --250 5.3 J 110 J 79 J 25 J 6.1 J 8.3 J ND mg/L 11/15/10 --250 4.8 J 90 J 54 J 56 J 9.9 J 8.1 J NDmg/L 05/09/11 --250 4.2 J 78 J 49 J 39 J 11 J 7.3 J NDmg/L 11/14/11 --250 4.4 J 57 J 100 J 24 J 11 J 7.7 J NDmg/L 05/08/12 --250 4.6 J 28 J 130 J 20 J 13 J 6.8 J ND mg/L 11/05/12 --250 3.5 J 32 J 130 J 25 J 11 J 8.2 J NDmg/L 05/14/13 --250 5.0 J 43 J 220 J 14 J 9.6 J 7.8 J NDmg/L 11/12/13 --250 6.4 J 46 J 100 J 14 J 9.1 J 7.0 J NDmg/L 05/13/14 --250 8.3 J 43 J 69 J 9.9 J 8.0 J 7.4 J NDmg/L 11/17/14 2.9 250 8.9 J 46 J 76 J 19 J 9.8 J 7.1 J NDmg/L 05/12/15 2.9 250 7.5 J 41 J 52 J 5.3 J 3.8 J 8.5 J NDmg/L 11/09/15 2.9 250 8.9 J 45 J 43 J 12 J 3.5 J 6.7 J NDmg/L 05/10/16 2.9 250 17 J 53 J 31 J 38 J 4.7 J 6.6 J NDmg/L 11/07/16 2.9 250 25 J 43 J 100 J 22 J 5.6 J 7.0 J ND mg/L 05/09/17 2.9 250 13 J 45 J 74 J 37 J 4.2 J 6.8 J ND July 2017 Page 33 of 33 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN SWS Reporting Limit Upgradient Downgradient Summary of Groundwater Monitoring Results for C&D Wells BlanksMethod Detection Limit TABLE 6 Sampson County, North Carolina Detected Constituents Sampson County Active C&D Landfill, Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date Alkalinity mg/L 10/08/96 --1.00 --1.00 13.00 --------(no standard)mg/L 02/18/97 --1 1 --3 -------- No EPA MCL mg/L 08/28/97 --1 --60.3 ----------mg/L 08/29/97 --1 1.56 --3.64 --------mg/L 02/23/98 --1 --92.7 2.78 --------mg/L 08/24/98 --1 1.5 129 316 -------- mg/L 02/22/99 --1 1.99 153 608 --------mg/L 08/23/99 --1 1.89 173 503 --------mg/L 05/22/07 ----3.2 2.3 2.8 ND ----NDmg/L 11/14/07 ----ND 270 440 ND ND ND ND mg/L 05/29/08 ----ND 97 370 ND ND ND NDmg/L 11/17/08 ----2.8 B 150 460 ND 2.7 B ND 6.3 Jmg/L 05/27/09 ----9.6 J 150 580 11 J 12 J 12 J NDmg/L 11/11/09 ----ND 180 440 ND ND ND ND mg/L 05/26/10 ----8.0 J 280 720 9.4 J 8.2 J 12 J NDmg/L 11/15/10 ----ND 220 840 ND ND ND NDmg/L 05/09/11 ----ND 240 650 ND ND 12 NDmg/L 11/14/11 ----ND 250 620 ND ND ND ND mg/L 05/08/12 ----ND 200 550 ND ND ND NDmg/L 11/05/12 ----ND 330 500 ND ND ND NDmg/L 05/14/13 ----ND 150 280 ND ND ND NDmg/L 11/12/13 ----ND 190 480 ND ND ND NDmg/L 05/13/14 ----ND 86 580 ND ND ND NDmg/L 11/17/14 14 --ND 190 680 ND ND ND NDmg/L 05/12/15 14 --ND 110 530 32 15 ND NDmg/L 11/09/15 14 --ND 160 660 ND ND ND NDmg/L 05/10/16 14 --ND 280 740 15 ND ND ND mg/L 11/07/16 14 --ND 210 780 ND ND ND NDmg/L 05/09/17 14 --ND 340 490 ND ND ND ND Notes: mg/L =milligrams per literug/L =micrograms per literND =Not detected at the stated reporting limitJ =Estimated value B =Blank-qualified data# =EPA Action Level* = EPA Secondary MCL-- =no data Bold only =Concentration above current NC 2L Groundwater Standard or NC SWS Groundwater Protection Standard Shaded and Bold =Concentration above current NC 2L Groundwater Standard or NC SWS Groundwater Protection Standard and EPA MCLBlanks =field, trip and/or method blanksSWS GPS =Solid Waste Section Groundwater Protection Standard EPA MCL =US Environmental Protection Agency Maximum Contaminant LevelNC 2L = North Carolina 2L Groundwater StandardSWS Reporting Limit =NCPQL or lab-specific reporting limit prior to 2007 and NCSWSL starting on 01/18/071) Data prior to 2/28/07 provided by Richardson, Smith, Gardner and Associates. 2) Results from laboratory re-analysis are reported in parentheses.3) The following dilutions were noted for the May 2017 event: MW-2N: Alkalinity (2x) and MW-3N: Alkalinity (10x) and Selenium(10x) July 2017 Page 1 of 6 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BNpH (field)S.U.10/08/96 5.76 4.82 5.49 ---- S.U.02/18/97 4.82 --5.43 ------ S.U.08/28/97 --5.63 -------- S.U.08/29/97 5.02 --5.08 ------S.U.10/09/97 --5.65 -------- S.U.10/30/97 --5.50 -------- S.U.02/23/98 4.36 --4.47 ------ S.U.04/20/98 --5.52 --------S.U.08/24/98 4.98 --6.15 ------ S.U.10/27/98 --6.10 -------- S.U.02/22/99 4.60 --6.51 ------ S.U.04/20/99 --5.88 --------S.U.08/23/99 4.77 --6.46 ------ S.U.05/28/02 --6.10 -------- S.U.11/05/02 4.50 5.70 6.60 4.80 4.60 5.60 S.U.05/29/03 4.60 --6.10 5.50 4.90 5.70S.U.05/24/06 4.30 6.10 6.60 4.70 4.40 5.70S.U.11/20/06 4.20 6.10 6.50 5.90 5.10 5.50 S.U.05/22/07 3.76 6.27 6.50 4.74 4.43 5.30 S.U.11/14/07 4.01 6.36 6.93 4.46 4.56 5.44S.U.05/29/08 4.24 6.40 6.73 4.54 4.55 5.60S.U.11/17/08 4.68 6.93 7.29 6.18 5.67 5.01 S.U.05/27/09 4.13 6.37 6.61 4.62 4.73 5.14 S.U.11/11/09 3.91 6.17 6.56 4.56 4.48 5.33S.U.05/26/10 3.94 6.12 6.18 5.43 4.83 4.48S.U.11/15/10 4.35 6.46 6.85 4.59 4.59 5.18 S.U.05/09/11 3.41 5.88 6.18 3.82 3.78 4.75 S.U.11/14/11 4.56 6.18 6.63 4.62 4.45 5.15 S.U.05/08/12 3.31 5.79 6.42 4.85 4.14 5.04S.U.11/05/12 4.16 6.37 6.81 4.79 4.45 4.92 S.U.05/14/13 4.14 6.37 6.77 6.05 4.47 4.92 S.U.11/12/13 4.46 6.41 6.87 5.18 4.77 5.74 S.U.05/13/14 4.35 6.45 6.82 5.84 5.18 5.54S.U.11/17/14 3.95 5.95 6.65 4.20 4.28 5.11 S.U.05/12/15 2.36 4.17 6.22 6.77 5.34 4.46 S.U.11/09/15 4.11 6.10 6.74 5.33 5.01 5.40 S.U.05/10/16 4.11 6.09 6.54 4.81 5.01 5.03(Verification Event)S.U.07/07/16 --------4.31 -- S.U.11/07/16 4.67 6.36 6.69 5.47 5.31 5.96 S.U.05/09/17 4.06 5.90 6.50 5.16 4.66 4.59 Upgradient DowngradientDetected Monitoring Constituent/Parameter Reporting Units Sample Date Sampson County, North Carolina TABLE 7 Summary of Field Parameters for C&D Wells Sampson County Active C&D Landfill, Permit No. 82-02 July 2017 Page 2 of 6 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN Upgradient DowngradientDetected Monitoring Constituent/Parameter Reporting Units Sample Date Sampson County, North Carolina TABLE 7 Summary of Field Parameters for C&D Wells Sampson County Active C&D Landfill, Permit No. 82-02 Specific Conductance (field)uS/cm 10/08/96 33 126 55 ------ uS/cm 02/18/97 34 --48 ------ uS/cm 08/28/97 --634 -------- uS/cm 08/29/97 30 --80 ------uS/cm 10/09/97 --842 -------- uS/cm 10/30/97 --582 -------- uS/cm 02/23/98 42 --181 ------ uS/cm 04/20/98 --1098 --------uS/cm 08/24/98 32.9 --1161 ------ uS/cm 10/27/98 --764 -------- uS/cm 02/22/99 52.4 --1931 ------ uS/cm 04/20/99 --1052 --------uS/cm 08/23/99 65.7 --1871 ------ uS/cm 05/28/02 --778 -------- uS/cm 11/05/02 65 --1241 91 86 44 uS/cm 05/24/06 95 724 1327 53 102 47uS/cm 11/20/06 110 707 1071 51 36 40uS/cm 05/22/07 89 934 1630 178 87 30 uS/cm 11/14/07 175 1000 1340 316 140 60 uS/cm 05/29/08 109 761 1570 202 84 45uS/cm 11/17/08 78 629 1368 125 29 37uS/cm 05/27/09 78 691 1582 193 53 38 uS/cm 11/11/09 118 736 1439 222 84 39 uS/cm 05/26/10 70 980 1625 156 44 38uS/cm 11/15/10 89 809 1684 267 66 43uS/cm 05/09/11 187 894 1848 212 79 44 uS/cm 11/14/11 260 731 1554 133 82 40 uS/cm 05/08/12 192 550 1514 115 74 38 uS/cm 11/05/12 341 815 1554 142 86 35uS/cm 05/14/13 262 505 1232 75 45 36 uS/cm 11/12/13 266 526 1328 155 126 88 uS/cm 05/13/14 162 343 1467 83 72 68 uS/cm 11/17/14 407 561 1723 282 85 46uS/cm 05/12/15 127 335 1336 107 28 34 uS/cm 11/09/15 266 479 1521 101 30 40 uS/cm 05/10/16 436 811 1662 359 50 45 (Verification Event)uS/cm 05/10/16 --------62 --uS/cm 11/07/16 400 511 1509 185 34 40 uS/cm 05/09/17 298 770 1251 248 32 36 July 2017 Page 3 of 6 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN Upgradient DowngradientDetected Monitoring Constituent/Parameter Reporting Units Sample Date Sampson County, North Carolina TABLE 7 Summary of Field Parameters for C&D Wells Sampson County Active C&D Landfill, Permit No. 82-02 Temperature (field)Celsius 10/08/96 20.80 14.70 21.10 ------ Celsius 02/18/97 16.10 --13.60 ------ Celsius 08/28/97 --21.10 -------- Celsius 08/29/97 21.10 --21.90 ------Celsius 10/09/97 --18.80 -------- Celsius 10/30/97 --14.80 -------- Celsius 02/23/98 14.60 --14.20 ------ Celsius 04/20/98 --22.90 --------Celsius 08/24/98 22.90 --22.10 ------ Celsius 10/27/98 --13.40 -------- Celsius 02/22/99 14.80 --14.00 ------ Celsius 04/20/99 --21.10 --------Celsius 08/23/99 20.90 --21.00 ------ Celsius 05/28/02 --18.00 -------- Celsius 11/05/02 18.00 18.00 19.00 13.00 22.00 18.00 Celsius 05/29/03 19.00 --18.00 20.00 20.00 19.00Celsius05/24/06 18.00 17.00 17.00 19.00 18.00 19.00Celsius11/20/06 20.00 18.00 18.00 17.00 16.00 19.00 Celsius 05/22/07 19.39 17.29 17.34 20.06 18.10 19.10 Celsius 11/14/07 21.45 19.87 23.99 24.51 22.96 20.50Celsius05/29/08 18.85 17.33 17.39 19.19 18.90 19.18Celsius11/17/08 18.99 17.70 17.98 19.31 18.12 18.95 Celsius 05/27/09 18.78 16.63 17.18 19.09 19.52 19.86 Celsius 11/11/09 19.74 19.31 18.27 20.01 20.51 19.28Celsius05/26/10 18.81 18.41 17.25 21.18 19.56 18.45Celsius11/15/10 20.82 20.39 18.36 21.40 20.54 19.01 Celsius 05/09/11 19.63 17.35 16.89 19.49 18.28 18.98 Celsius 11/14/11 21.93 20.46 19.46 21.86 21.67 20.87 Celsius 05/08/12 19.95 18.80 18.54 20.09 20.77 20.82Celsius11/05/12 19.40 19.58 18.34 21.78 21.92 19.13 Celsius 05/14/13 18.87 17.51 17.17 18.64 19.58 19.39 Celsius 11/12/13 21.3 19.9 19.1 22.3 22.7 20.6 Celsius 05/13/14 19.1 17.6 17.2 20.5 18.8 19.8Celsius11/17/14 21.4 19.4 19.0 21.4 22.1 20.1 Celsius 05/12/15 18.5 16.3 16.0 19.2 18.9 18.4 Celsius 11/09/15 20.8 19.9 19.2 22.4 21.8 20.3 Celsius 05/10/16 20.2 18.6 18.6 20.7 21.3 19.8(Verification Event)Celsius 07/07/16 --------24.7 -- Celsius 11/07/16 22.27 21.49 19.47 22.03 23.10 20.96 Celsius 05/09/17 21.4 18.7 17.0 21.7 21.4 20.2 July 2017 Page 4 of 6 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN Upgradient DowngradientDetected Monitoring Constituent/Parameter Reporting Units Sample Date Sampson County, North Carolina TABLE 7 Summary of Field Parameters for C&D Wells Sampson County Active C&D Landfill, Permit No. 82-02 Turbidity (field)NTU 10/08/96 0.94 2.7 4.1 ------ NTU 02/18/97 0.47 ---------- NTU 08/28/97 --7.76 8.72 ------ NTU 08/29/97 4.17 ----------NTU 10/09/97 --3.12 -------- NTU 10/30/97 --4 2 ------ NTU 02/23/98 2 ---------- NTU 04/20/98 --3 2.33 ------NTU 08/24/98 1.09 ---------- NTU 10/27/98 --7.13 1 ------ NTU 02/22/99 1 ---------- NTU 04/20/99 --5.01 4.69 ------NTU 08/23/99 10.3 ---------- NTU 05/22/07 13.9 52.2 1.4 9.1 0 0 NTU 11/14/07 78.5 152 98.1 68.1 59 36.5 NTU 05/29/08 5.4 29.8 29.6 45.2 63 6.6NTU11/17/08 0.34 13.6 5.00 78.0 50.3 0.49NTU05/27/09 2.60 74.5 2.71 46.5 51.7 2.65 NTU 11/11/09 0.59 47.0 13.9 95.2 89.7 0.38 NTU 05/26/10 0.53 6.79 70.9 99.1 49.0 18.45NTU11/15/10 0.48 3.43 4.02 42.1 44.5 0.84NTU05/09/11 0.23 0.49 0.67 8.85 57.8 0.46 NTU 11/14/11 85 2.64 21.5 10.7 90.6 1.04 NTU 05/08/12 5.51 5.26 15.5 88.0 160 2.95NTU11/05/12 26.8 3.42 17.7 23.8 87.7 0.64NTU05/14/13 10.8 9.63 1.16 97.3 18.7 0.68 NTU 11/12/13 24.1 22.4 2.84 11.5 25.9 1.82 NTU 05/13/14 3.16 88.5 9.01 95.0 49.3 2.06 NTU 11/17/14 0.50 56.5 18.20 9.5 50.3 2.52NTU05/12/15 0.26 4.11 0.74 272 115 0.55 NTU 11/09/15 1.09 10.4 1.52 165 102 3.25 NTU 05/10/16 4.96 15.7 24.4 83.6 52.3 3.40 (Verification Event)NTU 07/07/16 --------52.8 --NTU 11/07/16 1.96 23.4 7.23 148 87.1 1.69 NTU 05/09/17 1.85 14.7 5.27 165 90.3 2.50 July 2017 Page 5 of 6 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN Upgradient DowngradientDetected Monitoring Constituent/Parameter Reporting Units Sample Date Sampson County, North Carolina TABLE 7 Summary of Field Parameters for C&D Wells Sampson County Active C&D Landfill, Permit No. 82-02 ORP (field)millivolts 05/22/07 428 -80 -151 301 367 140 millivolts 11/14/07 399 -59 -47 317 300 147 millivolts 05/29/08 382 -68 -127 310 159 106 millivolts 11/17/08 322 21.7 -52.4 296 304 164millivolts05/27/09 292 -19.3 -39.3 260 219 158 millivolts 11/11/09 285 -34.6 -42.3 233 230 150 millivolts 05/26/10 213 -21.1 -45.3 141 164 170 millivolts 11/15/10 263 -39.1 -69.8 280 283 199millivolts05/09/11 265 -32.3 -37.2 241 247 162 millivolts 11/14/11 105 -15.2 -48.2 167 142 72.5 millivolts 05/08/12 253 -90.9 -61.4 143 201 137 millivolts 11/05/12 108 -14.3 -61.8 117 112 79.1millivolts05/14/13 103 -45.4 21.4 80.1 128 107 millivolts 11/12/13 383 -77.9 -52.0 295 347 154 millivolts 05/13/14 392 0.0 -87.9 175 302 147 millivolts 11/17/14 219 13.9 29.9 170 162 132millivolts05/12/15 169 12.1 -47.0 12.7 108 107millivolts11/09/15 486 28.7 -38.8 364 282 198 millivolts 05/10/16 413 -44.9 -66.2 293 280 175 (Verification Event)millivolts 07/07/16 --------278 --millivolts 11/07/16 30.7 -12.6 -77.1 -5.5 -49.6 -34.1millivolts05/09/17 360 -24.4 -56.4 253 302 235 July 2017 Page 6 of 6 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx MW-1N MW-2N MW-3N MW-4N MW-5AN MW-5BN Upgradient DowngradientDetected Monitoring Constituent/Parameter Reporting Units Sample Date Sampson County, North Carolina TABLE 7 Summary of Field Parameters for C&D Wells Sampson County Active C&D Landfill, Permit No. 82-02 Dissolved Oxygen (field)mg/L 05/22/07 5.10 0.60 0.50 6.10 5.30 2.50 mg/L 11/14/07 1.58 0.72 0.58 6.84 6.80 0.66 mg/L 05/29/08 4.83 0.42 0.38 8.56 6.76 4.51 mg/L 11/17/08 5.59 1.05 0.87 6.71 8.73 2.19mg/L 05/27/09 4.57 0.38 0.46 6.28 6.45 1.21 mg/L 11/11/09 2.17 0.75 0.88 4.56 6.06 1.30 mg/L 05/26/10 5.59 0.39 0.59 6.30 6.94 0.57 mg/L 11/15/10 6.20 1.08 1.52 5.10 6.19 0.47mg/L 05/09/11 5.67 0.76 0.65 5.59 6.71 0.98 mg/L 11/14/11 4.68 0.24 0.26 3.60 4.41 1.52 mg/L 05/08/12 6.45 0.90 0.49 6.75 6.17 3.30 mg/L 11/05/12 1.42 0.58 0.28 4.33 5.23 1.12mg/L 05/14/13 2.24 2.86 0.79 7.54 7.35 1.62 mg/L 11/12/13 5.07 0.22 0.67 5.50 6.51 1.18 mg/L 05/13/14 8.22 0.19 0.30 7.96 7.25 1.08 mg/L 11/17/14 3.88 0.40 0.15 3.09 5.25 1.22mg/L 05/12/15 7.17 0.48 0.33 7.00 6.34 0.38mg/L 11/09/15 6.74 0.48 0.30 5.83 6.05 2.30 mg/L 05/10/16 6.21 0.80 1.09 3.59 4.93 1.13 (Verification Event)mg/L 07/07/16 --------3.98 --mg/L 11/07/16 4.61 0.45 0.37 2.96 3.46 0.70mg/L 05/09/17 7.17 0.39 0.59 2.50 3.56 4.51 Notes: mg/L =milligrams per literS.U. =Standard UnitsNTU =Nephelometric Turbidity Units ND =Not detected at the stated reporting limit uS/cm =microsiemens per centimeter -- =no data July 2017 Page 1 of 9 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Antimony ug/L 11/05/03 --dry ----ND (No SW Standard)ug/L 05/25/04 30 dry ND --NDug/L 05/16/05 30 dry ND --ND ug/L 11/25/05 30 dry ND --ND ug/L 05/24/06 30 dry ND --ND ug/L 11/20/06 30 dry ND --ND ug/L 05/22/07 6 dry ND --ND ug/L 11/15/07 6 ND ND dry -- ug/L 05/28/08 6 ND ND ND NDug/L 11/17/08 6 dry ND ND ND ug/L 05/26/09 6 ND ND ND ND ug/L 11/11/09 6 0.0860 B ND 0.0730 B 0.0770 Jug/L 05/26/10 6 ND ND ND ND ug/L 11/15/10 6 ND ND ND ND ug/L 05/09/11 6 ND ND ND NDug/L 11/14/11 6 ND ND ND ND ug/L 05/08/12 6 ND ND 0.264 J ND ug/L 11/05/12 6 ND ND ND NDug/L 05/13/13 6 ND ND ND ND ug/L 11/11/13 6 ND ND ND ND ug/L 05/12/14 6 ND ND ND NDug/L 11/17/14 6 0.363 J 0.234 J 0.806 J ND ug/L 05/12/15 6 0.368 J ND 1.37 J ND ug/L 11/09/15 6 ND ND 0.794 J NDug/L 05/11/16 6 0.291 J 0.261 J dry ND ug/L 11/07/16 6 0.268 J ND 0.411 J ND ug/L 05/09/17 6 ND 0.864 J 0.672 J NDArsenicug/L 11/05/03 --dry ND --ND Human Health SW Standard = 10 ug/L ug/L 05/25/04 10 dry ND --ND ug/L 05/16/05 10 dry ND --ND ug/L 11/25/05 10 dry ND --ND ug/L 05/24/06 10 dry ND --ND ug/L 11/20/06 10 dry ND --ND ug/L 05/22/07 10 dry ND --NDug/L 11/15/07 10 ND ND dry ND ug/L 05/28/08 10 6.6 B 2.9 B ND 4.3 J ug/L 11/17/08 10 dry ND ND NDug/L 05/26/09 10 ND ND ND ND ug/L 11/11/09 10 2.94 J 2.87 J ND ND ug/L 05/26/10 10 ND ND ND NDug/L 11/15/10 10 ND ND ND 3.98 J ug/L 05/09/11 10 ND ND 3.13 J ND ug/L 11/14/11 10 2.81 J ND ND NDug/L 05/08/12 10 11.9 ND ND ND ug/L 11/05/12 10 4.55 B 4.38 B 4.29 B 4.48 J ug/L 05/13/13 10 ND ND ND NDug/L 11/11/13 10 ND ND ND ND ug/L 05/12/14 10 ND ND ND ND ug/L 11/17/14 10 ND 6.18 J ND NDug/L 05/12/15 10 ND ND ND ND ug/L 11/09/15 10 ND ND ND ND ug/L 05/11/16 10 ND ND dry NDug/L 11/07/16 10 ND 11.2 ND ND ug/L 05/09/17 10 ND ND ND ND TABLE 8 Summary of Surface Water Monitoring Results Detected Constituents Sampson County Active MSW/C&D Landfill , Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit DownstreamUpstream SW-1 SW-4 SW-5 Blanks Sampson County, North Carolina July 2017 Page 2 of 9 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx TABLE 8 Summary of Surface Water Monitoring Results Detected Constituents Sampson County Active MSW/C&D Landfill , Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit DownstreamUpstream SW-1 SW-4 SW-5 Blanks Sampson County, North Carolina Barium ug/L 11/05/03 ----ND --ND Human Health SW Standard = 200000 ug/L ug/L 05/25/04 500 --ND --NDug/L 05/16/05 500 --ND --ND ug/L 11/25/05 500 --ND --ND ug/L 05/24/06 500 --ND --ND ug/L 11/20/06 500 --ND --ND ug/L 05/22/07 100 dry 27.8 J --0.3 J ug/L 11/15/07 100 40.0 J 12.3 J dry 0.20 J ug/L 05/28/08 100 21.3 J 58.2 J 57.2 J 0.60 Jug/L 11/17/08 100 dry 12.1 J 48.1 J ND ug/L 05/26/09 100 11.2 J 16.9 J 61.0 J ND ug/L 11/11/09 100 60.1 J 26.0 J 55.9 J NDug/L 05/26/10 100 12.5 J 68.2 J 15.2 J ND ug/L 11/15/10 100 8.18 J 8.11 J 143 ND ug/L 05/09/11 100 13.2 J 12.5 J 122 NDug/L 11/14/11 100 11.9 J 16.4 J 214 ND ug/L 05/08/12 100 45.9 J 50.6 J 144 ND ug/L 11/05/12 100 9.37 J 15.6 J 207 NDug/L 05/13/13 100 11.5 J 14.4 J 163 1.21 J ug/L 11/11/13 100 9.56 J 15.5 J 194 1.22 J ug/L 05/12/14 100 13.8 J 14.5 J 189 NDug/L 11/17/14 100 10.0 J 22.4 J 60.2 J ND ug/L 05/12/15 100 20.6 J 16.7 J 150 ND ug/L 11/09/15 100 24.6 J 30.2 J 144 NDug/L 05/11/16 100 28.5 J 72.7 J dry ND ug/L 11/07/16 100 27.6 J 63.3 J 79.4 J ND ug/L 05/09/17 100 23.7 J 26.9 J 43.1 J NDBerylliumug/L 11/05/03 --dry ND --ND Freshwater Acute SW Standard = 65 ug/L ug/L 05/25/04 2 dry ND --ND Freshwater Chronic SW Standard = 6.5 ug/L ug/L 05/16/05 2 dry ND --ND ug/L 11/25/05 2 dry ND --ND ug/L 05/24/06 2 dry ND --ND ug/L 11/20/06 2 dry ND --ND ug/L 05/22/07 1 dry ND --NDug/L 11/15/07 1 ND ND dry ND ug/L 05/28/08 1 ND ND ND ND ug/L 11/17/08 1 dry ND ND NDug/L 05/26/09 1 ND 0.11 J ND ND ug/L 11/11/09 1 0.425 J 0.303 J ND ND ug/L 05/26/10 1 ND 0.120 J 0.152 J NDug/L 11/15/10 1 ND ND 0.549 J 0.106 J ug/L 05/09/11 1 ND 0.111 J 0.806 J ND ug/L 11/14/11 1 ND 0.102 J 0.260 J NDug/L 05/08/12 1 0.710 J ND ND ND ug/L 11/05/12 1 ND 0.128 J 0.363 J ND ug/L 05/13/13 1 ND ND ND NDug/L 11/11/13 1 ND ND 0.337 J ND ug/L 05/12/14 1 ND ND ND ND ug/L 11/17/14 1 ND ND ND NDug/L 05/12/15 1 ND ND 0.124 J ND ug/L 11/09/15 1 ND 1.41 ND ND ug/L 05/11/16 1 ND ND dry NDug/L 11/07/16 1 ND 0.177 J ND ND ug/L 05/09/17 1 ND ND ND ND July 2017 Page 3 of 9 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx TABLE 8 Summary of Surface Water Monitoring Results Detected Constituents Sampson County Active MSW/C&D Landfill , Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit DownstreamUpstream SW-1 SW-4 SW-5 Blanks Sampson County, North Carolina Cadmium ug/L 11/05/03 --dry ND --ND Freshwater Acute SW Standard = 0.82 ug/L ug/L 05/25/04 1 dry ND --NDFreshwater Chronic SW Standard = 0.15 ug/L ug/L 05/16/05 1 dry ND --ND ug/L 11/25/05 1 dry ND --ND ug/L 05/24/06 1 dry ND --ND ug/L 11/20/06 1 dry ND --ND ug/L 05/22/07 1 dry ND --ND ug/L 11/15/07 1 ND ND dry ND ug/L 05/28/08 1 ND ND ND NDug/L 11/17/08 1 dry ND ND ND ug/L 05/26/09 1 ND ND ND ND ug/L 11/11/09 1 ND ND ND NDug/L 05/26/10 1 ND ND ND ND ug/L 11/15/10 1 ND ND 0.360 J ND ug/L 05/09/11 1 ND ND ND NDug/L 11/14/11 1 ND ND ND ND ug/L 05/08/12 1 ND ND ND ND ug/L 11/05/12 1 ND ND ND NDug/L 05/13/13 1 ND ND ND ND ug/L 11/11/13 1 ND ND ND ND ug/L 05/12/14 1 ND ND ND NDug/L 11/17/14 1 ND ND ND ND ug/L 05/12/15 1 ND ND ND ND ug/L 11/09/15 1 ND ND ND NDug/L 05/11/16 1 ND ND dry ND ug/L 11/07/16 1 ND ND ND ND ug/L 05/09/17 1 ND ND ND NDChromiumug/L 11/05/03 --dry ND --ND Freshwater Acute SW Standard = 180 ug/L ug/L 05/25/04 10 dry ND --ND Freshwater Chronic SW Standard = 24 ug/L ug/L 05/16/05 10 dry ND --ND ug/L 11/25/05 10 dry ND --ND ug/L 05/24/06 10 dry ND --ND ug/L 11/20/06 10 dry ND --ND ug/L 05/22/07 10 dry ND --NDug/L 11/15/07 10 ND ND dry ND ug/L 05/28/08 10 2.0 J 19.4 ND ND ug/L 11/17/08 10 dry 7.2 B 7.9 B 4.9 Jug/L 05/26/09 10 ND ND ND ND ug/L 11/11/09 10 1.23 J ND ND ND ug/L 05/26/10 10 ND 1.35 J ND NDug/L 11/15/10 10 ND ND ND ND ug/L 05/09/11 10 ND ND ND ND ug/L 11/14/11 10 ND ND ND NDug/L 05/08/12 10 9.66 J ND ND ND ug/L 11/05/12 10 ND ND ND ND ug/L 05/13/13 10 ND ND ND NDug/L 11/11/13 10 ND ND ND ND ug/L 05/12/14 10 ND ND ND ND ug/L 11/17/14 10 ND 1.57 J ND NDug/L 05/12/15 10 2.78 B 2.41 B 7.43 B 1.82 J ug/L 11/09/15 10 ND ND 1.98 J ND ug/L 05/11/16 10 ND ND dry NDug/L 11/07/16 10 ND ND ND ND ug/L 05/09/17 10 ND 14.7 ND ND July 2017 Page 4 of 9 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx TABLE 8 Summary of Surface Water Monitoring Results Detected Constituents Sampson County Active MSW/C&D Landfill , Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit DownstreamUpstream SW-1 SW-4 SW-5 Blanks Sampson County, North Carolina Cobalt ug/L 11/05/03 ----ND --ND (No SW Standard)ug/L 05/25/04 10 --ND --NDug/L 05/16/05 10 --ND --ND ug/L 11/25/05 10 --ND --ND ug/L 05/24/06 10 --ND --ND ug/L 11/20/06 10 --ND --ND ug/L 05/22/07 10 dry 5.6 J --ND ug/L 11/15/07 10 2.5 J 3.3 J dry ND ug/L 05/28/08 10 2.5 J 6.0 J 4.1 J NDug/L 11/17/08 10 dry ND 2.3 J ND ug/L 05/26/09 10 1.1 J 3.3 J 0.9 J ND ug/L 11/11/09 10 1.33 J 6.13 J 1.17 J NDug/L 05/26/10 10 ND 1.39 J 2.05 J ND ug/L 11/15/10 10 ND ND 9.34 J ND ug/L 05/09/11 10 ND 1.72 J 13.1 NDug/L 11/14/11 10 1.97 J 3.13 J 6.43 J ND ug/L 05/08/12 10 2.20 J 4.46 J ND ND ug/L 11/05/12 10 2.16 J 3.16 J 4.96 J NDug/L 05/13/13 10 1.61 J 1.53 J ND ND ug/L 11/11/13 10 1.14 J 1.90 J 6.10 J ND ug/L 05/12/14 10 1.46 J 1.24 J 2.05 J NDug/L 11/17/14 10 1.43 J 1.93 J ND ND ug/L 05/12/15 10 1.11 J ND 18.7 ND ug/L 11/09/15 10 1.17 J 18.7 7.35 J NDug/L 05/11/16 10 ND 1.50 B dry 2.90 J ug/L 11/07/16 10 1.24 J 10.7 ND ND ug/L 05/09/17 10 ND 3.72 J 1.24 J NDCopperug/L 11/05/03 --dry ND --ND Freshwater Acute SW Standard = 3.6 ug/L ug/L 05/25/04 200 dry ND --ND Freshwater Chronic SW Standard = 2.7 ug/L ug/L 05/16/05 200 dry ND --ND ug/L 11/25/05 200 dry ND --ND ug/L 05/24/06 200 dry ND --NDug/L 11/20/06 200 dry ND --ND ug/L 05/22/07 10 dry ND --ND ug/L 11/15/07 10 ND ND dry NDug/L 05/28/08 10 1.20 B ND ND 1.00 J ug/L 11/17/08 10 dry ND 1.70 J ND ug/L 05/26/09 10 ND ND ND 1.47 Jug/L 11/11/09 10 ND ND ND ND ug/L 05/26/10 10 ND ND ND ND ug/L 11/15/10 10 ND ND 2.48 J NDug/L 05/09/11 10 ND ND 2.63 J ND ug/L 11/14/11 10 ND 1.67 J 2.82 J ND ug/L 05/08/12 10 10.6 ND 2.86 J ND ug/L 11/05/12 10 ND ND ND NDug/L 05/13/13 10 ND ND ND ND ug/L 11/11/13 10 ND ND ND ND ug/L 05/12/14 10 ND ND 1.70 J NDug/L 11/17/14 10 ND ND ND ND ug/L 05/12/15 10 ND ND 7.12 J ND ug/L 11/09/15 10 ND ND ND NDug/L 05/11/16 10 ND ND dry 2.90 J ug/L 11/07/16 10 2.19 B ND 3.55 B 3.34 J ug/L 05/09/17 10 ND 13.0 2.46 B 2.45 J (Verification Event)ug/L 06/23/17 10 --3.75 J --ND (Dissolved)ug/L 06/23/17 10 --1.68 J --ND July 2017 Page 5 of 9 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx TABLE 8 Summary of Surface Water Monitoring Results Detected Constituents Sampson County Active MSW/C&D Landfill , Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit DownstreamUpstream SW-1 SW-4 SW-5 Blanks Sampson County, North Carolina Lead ug/L 11/05/03 --dry ND --ND Freshwater Acute SW Standard = 14 ug/L ug/L 05/25/04 10 dry ND --NDFreshwater Chronic SW Standard = 0.54 ug/L ug/L 05/16/05 10 dry ND --ND ug/L 11/25/05 10 dry ND --ND ug/L 05/24/06 10 dry ND --ND ug/L 11/20/06 10 dry ND --ND ug/L 05/22/07 10 dry ND --ND ug/L 11/15/07 10 ND ND dry ND ug/L 05/28/08 10 2.0 J 13.3 ND NDug/L 11/17/08 10 dry ND ND ND ug/L 05/26/09 10 ND 2.0 J 1.7 J ND ug/L 11/11/09 10 1.99 J 2.84 J ND NDug/L 05/26/10 10 ND 2.47 J 2.40 J ND ug/L 11/15/10 10 2.61 J ND 6.28 J ND ug/L 05/09/11 10 3.82 J ND 8.16 J NDug/L 11/14/11 10 ND ND ND ND ug/L 05/08/12 10 42.6 ND 2.49 J ND ug/L 11/05/12 10 1.99 J 2.01 J 2.12 J NDug/L 05/13/13 10 ND ND ND ND ug/L 11/11/13 10 ND ND 2.24 J ND ug/L 05/12/14 10 2.15 J ND ND NDug/L 11/17/14 10 ND ND ND ND ug/L 05/12/15 10 ND ND 5.01 J ND ug/L 11/09/15 10 ND ND ND NDug/L 05/11/16 10 ND ND dry ND ug/L 11/07/16 10 ND ND ND ND ug/L 05/09/17 10 ND 11.4 ND ND (Verification Event)ug/L 06/23/17 10 --3.30 J --ND (Dissolved)ug/L 06/23/17 10 --ND --ND Nickel ug/L 11/05/03 ----ND --ND Freshwater Acute SW Standard = 140 ug/L ug/L 05/25/04 50 --ND --ND Freshwater Chronic SW Standard = 16 ug/L ug/L 05/16/05 50 --ND --ND ug/L 11/25/05 50 --ND --ND ug/L 05/24/06 50 --ND --ND ug/L 11/20/06 50 --ND --ND ug/L 05/22/07 50 dry 7.6 J --ND ug/L 11/15/07 50 ND 2.6 J dry NDug/L 05/28/08 50 3.6 J 11.3 J 12.5 J ND ug/L 11/17/08 50 dry 6.7 B 9.0 B 3.2 J ug/L 05/26/09 50 2.1 B 4.5 J 3.7 J 0.7 Jug/L 11/11/09 50 ND 6.92 J ND ND ug/L 05/26/10 50 ND 2.28 J ND ND ug/L 11/15/10 50 ND ND 9.91 J NDug/L 05/09/11 50 2.47 J 2.04 J 16.8 J ND ug/L 11/14/11 50 2.64 J 3.75 J 7.47 J ND ug/L 05/08/12 50 9.14 J 2.86 J 2.69 J NDug/L 11/05/12 50 2.06 J 2.09 J 4.90 J ND ug/L 05/13/13 50 2.52 J ND 3.77 J ND ug/L 11/11/13 50 ND ND 4.66 J NDug/L 05/12/14 50 ND ND 3.19 J ND ug/L 11/17/14 50 ND ND 4.34 J ND ug/L 05/12/15 50 3.02 J 2.55 J 20.7 J NDug/L 11/09/15 50 ND 31.2 J 7.64 J ND ug/L 05/11/16 50 ND ND dry NDug/L 11/07/16 50 ND 12.1 J 3.95 J ND ug/L 05/09/17 50 ND 8.86 J 3.26 J ND July 2017 Page 6 of 9 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx TABLE 8 Summary of Surface Water Monitoring Results Detected Constituents Sampson County Active MSW/C&D Landfill , Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit DownstreamUpstream SW-1 SW-4 SW-5 Blanks Sampson County, North Carolina Selenium ug/L 11/05/03 ----ND --ND Freshwater Acute SW Standard = 5 ug/L ug/L 05/25/04 20 --ND --NDFreshwater Chronic SW Standard = 5 ug/L ug/L 05/16/05 20 --ND --NDug/L 11/25/05 20 --ND --ND ug/L 05/24/06 20 --ND --ND ug/L 11/20/06 20 --ND --NDug/L 05/22/07 10 dry ND --ND ug/L 11/15/07 10 2.0 B ND dry 3.1 J ug/L 05/28/08 10 ND ND ND NDug/L 11/17/08 10 dry ND ND ND ug/L 05/26/09 10 ND ND ND ND ug/L 11/11/09 10 ND ND ND NDug/L 05/26/10 10 ND ND ND ND ug/L 11/15/10 10 ND ND ND ND ug/L 05/09/11 10 2.85 J ND ND NDug/L 05/09/11 10 0.987 J ND ND ND ug/L 11/14/11 10 ND ND ND ND ug/L 05/08/12 10 ND ND ND 4.01 Jug/L 11/05/12 10 ND ND ND ND ug/L 05/13/13 10 ND ND ND ND ug/L 11/11/13 10 ND ND ND NDug/L 05/12/14 10 ND ND ND ND ug/L 11/17/14 10 ND ND ND ND ug/L 05/12/15 10 ND ND ND NDug/L 11/09/15 10 ND ND ND ND ug/L 05/11/16 10 ND ND dry NDug/L 11/07/16 10 ND ND ND ND ug/L 05/09/17 10 ND ND ND ND Silver ug/L 11/05/03 --dry ND --ND Freshwater Acute SW Standard = 30 ug/L ug/L 05/25/04 10 dry ND --ND Freshwater Chronic SW Standard = 0.06 ug/L ug/L 05/16/05 10 dry ND --NDug/L 11/25/05 10 dry ND --ND ug/L 05/24/06 10 dry ND --ND ug/L 11/20/06 10 dry ND --NDug/L 05/22/07 10 dry ND --ND ug/L 11/15/07 10 ND ND dry ND ug/L 05/28/08 10 ND ND ND NDug/L 11/17/08 10 dry ND 2.6 J ND ug/L 05/26/09 10 ND ND ND ND ug/L 11/11/09 10 ND ND ND NDug/L 05/26/10 10 ND ND ND ND ug/L 11/15/10 10 ND ND ND ND ug/L 05/09/11 10 ND ND ND NDug/L 11/14/11 10 ND ND ND ND ug/L 05/08/12 10 ND ND ND ND ug/L 11/05/12 10 ND ND ND NDug/L 05/13/13 10 ND ND ND ND ug/L 11/11/13 10 ND ND ND ND ug/L 05/12/14 10 ND ND ND NDug/L 11/17/14 10 ND ND ND ND ug/L 05/12/15 10 ND ND ND ND ug/L 11/09/15 10 ND ND 1.95 J NDug/L 05/11/16 10 ND ND dry NDug/L 11/07/16 10 ND ND ND ND ug/L 05/09/17 10 ND ND ND ND July 2017 Page 7 of 9 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx TABLE 8 Summary of Surface Water Monitoring Results Detected Constituents Sampson County Active MSW/C&D Landfill , Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit DownstreamUpstream SW-1 SW-4 SW-5 Blanks Sampson County, North Carolina Thallium ug/L 11/05/03 --dry ND --ND (No SW Standard)ug/L 05/25/04 10 dry ND --NDug/L 05/16/05 10 dry ND --ND ug/L 11/25/05 10 dry ND --ND ug/L 05/24/06 10 dry ND --ND ug/L 11/20/06 10 dry ND --ND ug/L 05/22/07 5.5 dry ND --ND ug/L 11/15/07 5.5 ND ND dry -- ug/L 05/28/08 5.5 ND 0.064 J 0.043 J NDug/L 11/17/08 5.5 dry ND ND ND ug/L 05/26/09 5.5 ND ND ND ND ug/L 11/11/09 5.5 ND ND ND NDug/L 05/26/10 5.5 ND ND ND ND ug/L 11/15/10 5.5 ND ND ND ND ug/L 05/09/11 5.5 ND ND ND NDug/L 11/14/11 5.5 ND ND ND ND ug/L 05/08/12 5.5 ND ND ND ND ug/L 11/05/12 5.5 ND ND ND NDug/L 05/13/13 5.5 ND ND ND ND ug/L 11/11/13 5.5 ND ND ND ND ug/L 05/12/14 5.5 ND ND ND NDug/L 11/17/14 5.5 ND ND ND ND ug/L 05/12/15 5.5 ND ND ND ND ug/L 11/09/15 5.5 ND ND ND NDug/L 05/11/16 5.5 ND ND dry ND ug/L 11/07/16 5.5 ND ND ND ND ug/L 05/09/17 5.5 0.153 J 0.145 J 0.133 J NDVanadiumug/L 11/05/03 --dry ND --ND (No SW Standard)ug/L 05/25/04 40 dry ND --ND ug/L 05/16/05 40 dry ND --ND ug/L 11/25/05 40 dry ND --ND ug/L 05/24/06 40 dry ND --ND ug/L 11/20/06 40 dry ND --ND ug/L 05/22/07 25 dry ND --NDug/L 11/15/07 25 ND ND dry ND ug/L 05/28/08 25 1.7 B 42.8 ND 1.2 J ug/L 11/17/08 25 dry ND ND NDug/L 05/26/09 25 0.7 J 1.1 J 1.2 J ND ug/L 11/11/09 25 1.74 J 1.61 J ND ND ug/L 05/26/10 25 ND 3.13 J ND NDug/L 11/15/10 25 ND ND ND ND ug/L 05/09/11 25 ND ND ND ND ug/L 11/14/11 25 ND ND ND NDug/L 05/08/12 25 12.9 J ND ND ND ug/L 11/05/12 25 ND ND ND ND ug/L 05/13/13 25 ND ND ND NDug/L 11/11/13 25 ND ND ND ND ug/L 05/12/14 25 ND ND ND ND ug/L 11/17/14 25 ND 3.28 J ND NDug/L 05/12/15 25 ND ND 4.12 J ND ug/L 11/09/15 25 ND ND 1.84 J ND ug/L 05/11/16 25 ND ND dry NDug/L 11/07/16 25 ND ND ND ND ug/L 05/09/17 25 ND 17.9 J 2.38 J ND July 2017 Page 8 of 9 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx TABLE 8 Summary of Surface Water Monitoring Results Detected Constituents Sampson County Active MSW/C&D Landfill , Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit DownstreamUpstream SW-1 SW-4 SW-5 Blanks Sampson County, North Carolina Zinc ug/L 11/05/03 ----ND --ND Freshwater Acute SW Standard = 36 ug/L ug/L 05/25/04 50 --ND --NDFreshwater Chronic SW Standard = 36 ug/L ug/L 05/16/05 50 --ND --ND ug/L 11/25/05 50 --ND --ND ug/L 05/24/06 50 --ND --ND ug/L 11/20/06 50 --ND --ND ug/L 05/22/07 10 dry 17.8 --ND ug/L 11/15/07 10 6.6 J 6.5 J dry ND ug/L 05/28/08 10 6.9 B 31.9 15.9 1.8 Jug/L 11/17/08 10 dry 9.7 B 24.2 4.6 J ug/L 05/26/09 10 ND 14.6 19.7 ND ug/L 11/11/09 10 16.0 31.3 22.4 NDug/L 05/26/10 10 ND 42.0 5.72 J ND ug/L 11/15/10 10 ND ND 97.8 ND ug/L 12/21/10 10 ----98.1 --ug/L 05/09/11 10 4.82 J 10.4 110 ND ug/L 11/14/11 10 4.35 J 10.6 36.8 ND ug/L 05/08/12 10 14.5 6.92 J 8.29 J NDug/L 11/05/12 10 ND ND 24.6 ND ug/L 05/13/13 10 5.55 J 5.15 J 6.06 J ND ug/L 11/11/13 10 4.13 J 4.26 J 47.5 NDug/L 05/12/14 10 ND ND 21.0 ND ug/L 11/17/14 10 4.51 J 7.67 J 5.23 J ND ug/L 05/12/15 10 ND 3.88 J 180 NDug/L 11/09/15 10 4.18 J 77.2 62.8 ND ug/L 05/11/16 10 ND 7.39 J dry NDug/L 11/07/16 10 6.01 J 27.1 22.7 ND ug/L 05/09/17 10 ND 186 22.4 ND (Verification Event)ug/L 06/23/17 10 --39.0 --ND (Dissolved)ug/L 06/23/17 10 --13.7 --ND Acetone ug/L 11/05/03 100 dry ND --NDSW Standard = 2000 ug/L ug/L 05/25/04 100 dry ND --ND ug/L 05/16/05 100 dry ND --ND ug/L 11/25/05 100 dry ND --NDug/L 05/24/06 100 dry ND --ND ug/L 11/20/06 100 dry ND --ND ug/L 05/22/07 100 dry ND --6.6 Jug/L 11/15/07 100 ND ND dry -- ug/L 05/28/08 100 ND 5.6 B 7.1 B 2.9 J ug/L 11/17/08 100 dry 8.4 B 9.2 B 9.8 Jug/L 05/26/09 100 ND ND ND ND ug/L 11/11/09 100 ND ND ND ND ug/L 05/26/10 100 ND ND ND NDug/L 11/15/10 100 ND ND 9.7 B 9.2 J ug/L 05/09/11 100 ND ND 3.9 J ND ug/L 11/14/11 100 ND ND ND NDug/L 05/08/12 100 ND ND ND ND ug/L 11/05/12 100 ND ND ND ND ug/L 11/05/12 100 ND ND ND NDug/L 05/13/13 100 ND ND ND ND ug/L 11/11/13 100 ND ND ND ND ug/L 05/12/14 100 ND ND ND NDug/L 11/17/14 100 ND ND ND ND ug/L 05/12/15 100 ND ND 17 J ND ug/L 11/09/15 100 ND ND 23 J ND ug/L 05/11/16 100 ND ND dry NDug/L 11/07/16 100 ND ND ND ND ug/L 05/09/17 100 ND ND ND ND July 2017 Page 9 of 9 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx TABLE 8 Summary of Surface Water Monitoring Results Detected Constituents Sampson County Active MSW/C&D Landfill , Permit No. 82-02 Detected Monitoring Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit DownstreamUpstream SW-1 SW-4 SW-5 Blanks Sampson County, North Carolina Chloroform ug/L 11/05/03 5 --ND --ND Human Health SW Standard = 150 ug/L ug/L 05/25/04 5 --ND --NDug/L 05/16/05 5 --ND --NDug/L 11/25/05 5 --ND --ND ug/L 05/24/06 5 --ND --ND ug/L 11/20/06 5 --ND --NDug/L 05/22/07 5 dry ND --ND ug/L 11/15/07 5 ND 0.48 J dry ND ug/L 05/28/08 5 ND ND ND NDug/L 11/17/08 5 dry ND ND ND ug/L 05/26/09 5 ND ND ND ND ug/L 11/11/09 5 ND ND ND NDug/L 05/26/10 5 ND ND ND ND ug/L 11/15/10 5 ND ND ND ND ug/L 05/09/11 5 ND ND ND NDug/L 11/14/11 5 ND ND ND ND ug/L 05/08/12 5 ND ND ND ND ug/L 11/05/12 5 ND ND ND NDug/L 11/05/12 5 ND ND ND ND ug/L 05/13/13 5 ND ND ND ND ug/L 11/11/13 5 ND ND ND NDug/L 05/12/14 5 ND ND ND ND ug/L 11/17/14 5 ND ND ND ND ug/L 05/12/15 5 ND ND ND ND ug/L 11/09/15 5 ND ND ND ND ug/L 05/11/16 5 ND ND dry ND ug/L 11/07/16 5 ND ND ND ND ug/L 05/09/17 5 ND ND ND ND ug/L 06/23/17 1 ND ND ND ND Tetrahydrofuran ug/L 05/08/12 ------ND ND (No SW Standard)ug/L 11/05/12 ------ND ND ug/L 05/13/13 ------ND -- ug/L 11/11/13 ------ND ND ug/L 05/12/14 -----ND ND ug/L 11/17/14 ------ND ND ug/L 05/12/15 ------ND ND ug/L 11/09/15 ------2.1 ND ug/L 05/11/16 ---------- ug/L 11/07/16 ------ND ND ug/L 05/09/17 ------ND ND Notes:ug/L =micrograms per liter ND =Not detected at the stated reporting limit -- =no data dry = no sample collected because sampling point was dry Blanks =field, trip and method blanks Bold =Concentrations above Human Health or Chronic Surface Water Standard Shaded and Bold =Concentration above Acute and Chronic Surface Water Standards SW Standard =Surface water standard (action level) = SWS Reporting Limit =NCPQL prior to 2007 and NCSWSL starting on 01/18/07 * Data prior to 2/28/07 provided by Richardson, Smith, Gardner and Associates. SW-5 was added as a downstream sampling point for Phase 2 following the May 2007 sampling event. Data in parentheses are from laboratory re-analysis. Detections for dates prior to May 2007 from historical G.N. Richardson & Associates, Inc. Semi-Annual Monitoring Event Reports and S&ME historical reports. Surface Water Standards based on Class C Freshwater Aquatic Life stream classification for the Bearskin Swamp per 15A NCAC 2B. July 2017 Page 1 of 3 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx pH (field)S.U.05/24/06 --5.1 -- S.U.11/20/06 --4.4 -- S.U.05/23/07 dry 3.14 -- S.U.11/13/07 5.60 6.16 dry S.U.05/28/08 4.12 3.84 6.30 S.U.11/17/08 dry 4.03 6.23 S.U.05/26/09 4.34 4.20 6.67 S.U.11/11/09 3.18 3.44 5.80 S.U.05/26/10 4.35 4.23 5.54 S.U.11/15/10 4.26 4.06 3.90 (Verification Event)S.U.12/21/10 ----3.60 S.U.05/09/11 2.88 3.26 3.30 S.U.11/14/11 5.03 4.45 4.07 S.U.05/08/12 4.25 5.30 6.19 S.U.11/05/12 3.53 4.12 4.14 S.U.05/13/13 5.54 4.48 5.37 S.U.11/11/13 4.54 4.30 4.42 S.U.05/12/14 5.00 4.47 5.72 S.U.11/18/14 4.12 4.40 5.64 S.U.05/12/15 3.04 2.04 3.38 S.U.11/09/15 4.06 2.70 6.58 S.U.05/11/16 3.91 3.66 dry S.U.11/07/16 4.37 4.38 5.44 S.U.05/09/17 4.51 5.68 7.29 (Verification Event)S.U.06/23/17 --6.49 -- Specific Conductance (field)uS/cm 05/24/06 --23 -- uS/cm 11/20/06 --54 -- uS/cm 05/23/07 dry 111 -- uS/cm 11/13/07 177 109 dry uS/cm 05/28/08 59 119 672 uS/cm 11/17/08 dry 41 367 uS/cm 05/26/09 34 69 329 uS/cm 11/11/09 128 129 423 uS/cm 05/26/10 32 50 253 uS/cm 11/15/10 34 51 482 (Verification Event)uS/cm 12/21/10 ----567 uS/cm 05/09/11 40 53 531 uS/cm 11/14/11 35 62 443 uS/cm 05/08/12 34 114 431 uS/cm 11/05/12 27 44 253 uS/cm 05/13/13 36 38 420 uS/cm 11/11/13 69 88 317 uS/cm 05/12/14 53 64 479 uS/cm 11/18/14 40 49 605 uS/cm 05/12/15 35 35 668 uS/cm 11/09/15 47 359 591 uS/cm 05/11/16 49 168 dry uS/cm 11/07/16 41 174 503 uS/cm 05/09/17 36 475 445 (Verification Event)uS/cm 06/23/17 --122 -- Downstream SW-1 SW-4 SW-5 TABLE 9 Summary of Surface Water Field ParametersSampson County Active MSW/C&D Landfill , Permit No. 82-02Sampson County, North Carolina Detected Monitoring Constituent/Parameter Reporting Units Sample Date Upstream July 2017 Page 2 of 3 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Downstream SW-1 SW-4 SW-5 TABLE 9 Summary of Surface Water Field ParametersSampson County Active MSW/C&D Landfill , Permit No. 82-02Sampson County, North Carolina Detected Monitoring Constituent/Parameter Reporting Units Sample Date Upstream Temperature (field)Celsius 05/24/06 --16 -- Celsius 11/20/06 --13 -- Celsius 05/23/07 dry 17.27 -- Celsius 11/13/07 13.89 14.76 dry Celsius 05/28/08 16.67 17.02 17.25 Celsius 11/17/08 dry 10.74 11.24 Celsius 05/26/09 17.44 18.18 19.01 Celsius 11/11/09 15.24 15.22 14.93 Celsius 05/26/10 17.04 17.59 19.38 Celsius 11/15/10 14.62 17.20 10.93 (Verification Event)Celsius 12/21/10 ----4.10 Celsius 05/09/11 16.44 16.41 20.18 Celsius 11/14/11 16.50 16.67 18.69 Celsius 05/08/12 16.96 20.97 27.52 Celsius 11/05/12 10.60 10.56 7.88 Celsius 05/13/13 15.75 15.51 22.36 Celsius 11/11/13 12.80 12.80 10.10 Celsius 05/12/14 17.70 17.90 27.7 Celsius 11/18/14 11.20 10.90 9.30 Celsius 05/12/15 17.30 17.30 28.10 Celsius 11/09/15 16.80 16.30 17.70 Celsius 05/11/16 17.90 20.5 dry Celsius 11/07/16 14.89 14.88 15.72 Celsius 05/09/17 15.6 16.9 18.4 (Verification Event)Celsius 06/23/17 --25.1 -- Turbidity (field)NTU 05/23/07 dry ---- NTU 11/13/07 72.7 51.3 dry NTU 05/28/08 41.1 663 74.6 NTU 11/17/08 dry 0.85 5.53 NTU 05/26/09 25.7 10.3 14.3 NTU 11/11/09 8.38 62.9 11.3 NTU 05/26/10 2.95 7.60 34.9 NTU 11/15/10 4.38 33.8 21.0 (Verification Event)NTU 12/21/10 ----3.34 NTU 05/09/11 3.57 2.58 1.25 NTU 11/14/11 17.7 17.9 3.08 NTU 05/08/12 47.0 3.06 21.2 NTU 11/05/12 7.86 2.28 1.31 NTU 05/13/13 6.18 4.15 9.13 NTU 11/11/13 3.40 11.6 2.42 NTU 05/12/14 6.95 8.43 7.41 NTU 11/18/14 158 44.4 7.89 NTU 05/12/15 4.92 3.27 88.2 NTU 11/09/15 22.2 16.2 32.8 NTU 05/11/16 5.60 11.8 dry NTU 11/07/16 3.36 8.33 5.73 NTU 05/09/17 10.5 158 33.2 (Verification Event)NTU 06/23/17 --72.0 -- July 2017 Page 3 of 3 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Downstream SW-1 SW-4 SW-5 TABLE 9 Summary of Surface Water Field ParametersSampson County Active MSW/C&D Landfill , Permit No. 82-02Sampson County, North Carolina Detected Monitoring Constituent/Parameter Reporting Units Sample Date Upstream ORP (field)mV 05/23/07 dry 457 -- mV 11/13/07 242 280 dry mV 05/28/08 364 365 30 mV 11/17/08 dry 270.0 160.0 mV 05/26/09 197.1 237.8 71.7 mV 11/11/09 342.4 270.1 204.8 mV 05/26/10 246.9 219.5 148.2 mV 11/15/10 318.9 297.8 311.5 (Verification Event)mV 12/21/10 ----352.3 mV 05/09/11 272.7 272.3 210.9 mV 11/14/11 148.0 153.2 228.1 mV 05/08/12 160.3 143.7 125.6 mV 11/05/12 169.9 126.8 156.3 mV 05/13/13 134.5 155.8 88.8 mV 11/11/13 355.6 273.4 426.3 mV 05/12/14 358.8 314.4 287.5 mV 11/18/14 290.7 164.9 169.0 mV 05/12/15 282.5 351.2 253.7 mV 11/09/15 465.1 538.3 122.2 mV 05/11/16 372.0 249.8 dry mV 11/07/16 -36.1 -62.4 -27.5 mV 05/09/17 325.7 190.9 31.0 (Verification Event)mV 06/23/17 --90.2 -- Dissolved Oxygen (field)mg/L 05/23/07 dry 0.7 -- mg/L 11/13/07 9.13 9.00 dry mg/L 05/28/08 8.16 7.91 6.18 mg/L 11/17/08 dry 9.40 6.74 mg/L 05/26/09 7.57 7.25 13.15 mg/L 11/11/09 5.91 8.22 5.86 mg/L 05/26/10 7.49 8.82 3.76 mg/L 11/15/10 10.95 9.73 13.69 (Verification Event)mg/L 12/21/10 ----14.46 mg/L 05/09/11 8.72 9.18 10.33 mg/L 11/14/11 7.67 7.18 8.09 mg/L 05/08/12 7.51 6.20 5.71 mg/L 11/05/12 9.31 7.40 8.44 mg/L 05/13/13 8.89 8.34 8.69 mg/L 11/11/13 9.77 8.48 9.26 mg/L 05/12/14 8.55 7.71 5.50 mg/L 11/18/14 10.74 9.44 10.12 mg/L 05/12/15 7.62 6.23 3.37 mg/L 11/09/15 6.88 8.57 5.60 mg/L 05/11/16 8.02 5.88 dry mg/L 11/07/16 6.28 2.42 6.44 mg/L 05/09/17 7.89 4.44 5.36 (Verification Event)mg/L 06/23/17 --5.45 -- Notes:mg/L =milligrams per liter S.U. =Standard Units NTU =Nephelometric Turbidity Units uS/cm =microsiemens per centimeter mV =millivolts -- =no data dry = no sample collected because sampling point was dry 1)SW-5 was added as a downstream sampling point for Phase 2 following the following the May 2007 sampling event. July 2017 Page 1 of 12 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Detected Monitoring Constituent/Parameter Units Sample Date SWS Reporting LimitAntimonyug/L 05/23/07 6 84.8 ND ug/L 11/15/07 6 11.0 ND ug/L 05/28/08 6 16.8 J ND ug/L 11/20/08 6 9.20 J ND ug/L 05/28/09 6 15.3 J ND ug/L 11/12/09 6 6.42 J 0.0730 Jug/L 05/27/10 6 9.61 J ND ug/L 11/15/10 6 11.5 J ND ug/L 05/12/11 6 8.95 J NDug/L 11/17/11 6 8.09 J ND ug/L 05/10/12 6 10.4 J ND ug/L 11/09/12 6 2.66 J NDug/L 05/15/13 6 ND ND ug/L 11/13/13 6 ND ND ug/L 05/14/14 6 26.5 J ND ug/L 11/19/14 6 23.0 ND ug/L 05/12/15 6 22.1 ND ug/L 11/12/15 6 26.8 ND ug/L 05/13/16 6 49.7 J ND ug/L 11/09/16 6 11.1 J ND ug/L 05/10/17 6 14.8 J ND Arsenic ug/L 05/24/06 10 25 ND ug/L 11/27/06 10 62 ND ug/L 05/23/07 10 ND 2.2 J ug/L 11/15/07 10 ND 2.4 J ug/L 05/28/08 10 ND 3.2 J ug/L 11/20/08 10 ND ND ug/L 05/28/09 10 89.5 J ND ug/L 11/12/09 10 41.2 ND ug/L 05/27/10 10 53.7 ND ug/L 11/15/10 10 31.0 NDug/L 05/12/11 10 29.7 ND ug/L 11/17/11 10 51.1 J ND ug/L 05/10/12 10 78.5 NDug/L 11/09/12 10 59.6 4.48 J ug/L 05/15/13 10 50.2 ND ug/L 11/13/13 10 103 NDug/L 05/14/14 10 84.9 ND ug/L 11/19/14 10 122 ND ug/L 05/12/15 10 111 ND ug/L 11/12/15 10 138 ND ug/L 05/13/16 10 208 ND ug/L 11/09/16 10 164 ND ug/L 05/10/17 10 168 ND Barium ug/L 05/23/07 100 46.5 J 0.30 J ug/L 11/15/07 100 33.8 J 0.20 J ug/L 05/28/08 100 98.0 J 0.60 J ug/L 11/20/08 100 178 ND ug/L 05/28/09 100 152 ND ug/L 11/12/09 100 66.9 J ND ug/L 05/27/10 100 177 ND ug/L 11/15/10 100 156 ND ug/L 05/12/11 100 49.6 J ND ug/L 11/17/11 100 241 ND ug/L 05/10/12 100 220 ND ug/L 11/09/12 100 72.4 J NDug/L 05/15/13 100 256 ND ug/L 11/13/13 100 285 ND ug/L 05/14/14 100 243 NDug/L 11/19/14 100 207 ND ug/L 05/12/15 100 305 ND ug/L 11/12/15 100 316 NDug/L 05/13/16 100 555 ND ug/L 11/09/16 100 277 ND ug/L 05/10/17 100 265 ND TABLE 10 Summary of Detected Leachate Parameters Sampson County Active MSW Landfill, Permit No. 82-02 Leachate Blanks July 2017 Page 2 of 12 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Detected Monitoring Constituent/Parameter Units Sample Date SWS Reporting Limit TABLE 10 Summary of Detected Leachate Parameters Sampson County Active MSW Landfill, Permit No. 82-02 Leachate Blanks Cadmium ug/L 05/24/06 10 76 ND ug/L 11/27/06 10 37 ND ug/L 05/23/07 1 ND ND ug/L 11/15/07 1 ND ND ug/L 05/28/08 1 ND 0.50 J ug/L 11/20/08 1 ND NDug/L 05/28/09 1 0.90 J ND ug/L 11/12/09 1 ND ND ug/L 05/27/10 1 ND NDug/L 11/15/10 1 ND ND ug/L 05/12/11 1 ND ND ug/L 11/17/11 1 ND NDug/L 05/10/12 1 ND ND ug/L 11/09/12 1 ND ND ug/L 05/15/13 1 ND ND ug/L 11/13/13 1 ND ND ug/L 05/14/14 1 ND ND ug/L 11/19/14 1 ND ND ug/L 05/12/15 1 ND ND ug/L 11/12/15 1 ND ND ug/L 05/13/16 1 ND ND ug/L 11/09/16 1 ND ND ug/L 05/10/17 1 ND ND Chromium ug/L 11/27/06 10 29 ND ug/L 05/23/07 10 ND ND ug/L 05/23/07 10 143 ND ug/L 11/15/07 10 ND ND ug/L 05/28/08 10 ND ND ug/L 11/20/08 10 47.0 J 4.9 J ug/L 05/28/09 10 171 ND ug/L 11/12/09 10 141 NDug/L 05/27/10 10 121 ND ug/L 11/15/10 10 114 ND ug/L 05/12/11 10 103 NDug/L 11/17/11 10 174 ND ug/L 05/10/12 10 233 ND ug/L 11/09/12 10 161 NDug/L 05/15/13 10 250 ND ug/L 11/13/13 10 253 ND ug/L 05/14/14 10 230 ND ug/L 11/19/14 10 289 ND ug/L 05/12/15 10 287 1.82 J ug/L 11/12/15 10 300 ND ug/L 05/13/16 10 441 ND ug/L 11/09/16 10 358 ND ug/L 05/10/17 10 419 ND Cobalt ug/L 05/24/06 10 89 ND ug/L 11/15/07 10 213 ND ug/L 05/28/08 10 181 1.0 J ug/L 11/20/08 10 158 ND ug/L 05/28/09 10 184 ND ug/L 11/12/09 10 83.5 ND ug/L 05/27/10 10 119 ND ug/L 11/15/10 10 65.5 ND ug/L 05/12/11 10 83.6 ND ug/L 11/17/11 10 69.9 J NDug/L 05/10/12 10 143 ND ug/L 11/09/12 10 84.7 ND ug/L 05/15/13 10 108 NDug/L 11/13/13 10 100 ND ug/L 05/14/14 10 95.7 ND ug/L 11/19/14 10 129 NDug/L 05/12/15 10 125 ND ug/L 11/12/15 10 99.6 ND ug/L 05/13/16 10 181 ND ug/L 11/09/16 10 117 ND ug/L 05/10/17 10 110 ND July 2017 Page 3 of 12 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Detected Monitoring Constituent/Parameter Units Sample Date SWS Reporting Limit TABLE 10 Summary of Detected Leachate Parameters Sampson County Active MSW Landfill, Permit No. 82-02 Leachate Blanks Copper ug/L 05/23/07 10 ND ND ug/L 11/15/07 10 ND ND ug/L 05/28/08 10 91.0 J ND ug/L 11/20/08 10 ND ND ug/L 05/28/09 10 ND 1.47 J ug/L 11/12/09 10 4.06 J NDug/L 05/27/10 10 13.1 ND ug/L 11/15/10 10 ND ND ug/L 05/12/11 10 2.81 J NDug/L 11/17/11 10 ND ND ug/L 05/10/12 10 9.97 J ND ug/L 11/09/12 10 ND NDug/L 05/15/13 10 ND ND ug/L 11/13/13 10 31.9 J ND ug/L 05/14/14 10 212 ND ug/L 11/19/14 10 99.5 ND ug/L 05/12/15 10 4.28 J ND ug/L 11/12/15 10 14.0 ND ug/L 05/13/16 10 18.3 J 2.90 J ug/L 11/09/16 10 46.5 J 3.34 J ug/L 05/10/17 10 87.2 2.45 J Lead ug/L 05/23/07 10 ND ND ug/L 11/15/07 10 ND ND ug/L 05/29/08 10 ND ND ug/L 11/20/08 10 ND ND ug/L 05/28/09 10 16.0 J ND ug/L 11/12/09 10 ND ND ug/L 05/27/10 10 4.07 J ND ug/L 11/15/10 10 3.24 J ND ug/L 05/12/11 10 5.44 J ND ug/L 11/17/11 10 ND NDug/L 05/10/12 10 15.9 J ND ug/L 11/09/12 10 17.2 J 2.36 J ug/L 05/15/13 10 ND NDug/L 11/13/13 10 ND ND ug/L 05/14/14 10 14.3 J ND ug/L 11/19/14 10 10.9 J NDug/L 05/12/15 10 6.87 J ND ug/L 11/12/15 10 14.3 ND ug/L 05/13/16 10 ND ND ug/L 11/09/16 10 62.3 J ND ug/L 05/10/17 10 11.8 ND Nickel ug/L 05/24/06 50 150 ND ug/L 05/23/07 50 158 ND ug/L 11/15/07 50 235 ND ug/L 05/28/08 50 255 ND ug/L 11/20/08 50 267 3.2 J ug/L 05/28/09 50 252 1.7 J ug/L 11/12/09 50 125 ND ug/L 05/27/10 50 203 ND ug/L 11/15/10 50 126 ND ug/L 05/12/11 50 172 ND ug/L 11/17/11 50 196 ND ug/L 05/10/12 50 300 ND ug/L 11/09/12 50 216 ND ug/L 05/15/13 50 318 NDug/L 11/13/13 50 299 ND ug/L 05/14/14 50 268 ND ug/L 11/19/14 50 323 NDug/L 05/12/15 50 270 1.89 J ug/L 11/12/15 50 289 ND ug/L 05/13/16 50 409 NDug/L 11/09/16 50 294 ND ug/L 05/10/17 50 261 ND July 2017 Page 4 of 12 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Detected Monitoring Constituent/Parameter Units Sample Date SWS Reporting Limit TABLE 10 Summary of Detected Leachate Parameters Sampson County Active MSW Landfill, Permit No. 82-02 Leachate Blanks Selenium ug/L 11/27/06 20 178 ND ug/L 05/23/07 10 ND ND ug/L 11/15/07 10 12.7 B 3.1 J ug/L 05/28/08 10 21.0 J 2.1 J ug/L 11/20/08 10 ND ND ug/L 05/28/09 10 ND NDug/L 11/12/09 10 6.63 J ND ug/L 05/27/10 10 3.49 J ND ug/L 11/15/10 10 11.3 NDug/L 05/12/11 10 ND ND ug/L 11/17/11 10 ND ND ug/L 05/10/12 10 15.9 J NDug/L 11/09/12 10 ND ND ug/L 05/15/13 10 ND ND ug/L 11/13/13 10 ND ND ug/L 05/14/14 10 ND ND ug/L 11/19/14 10 ND ND ug/L 05/12/15 10 ND ND ug/L 11/12/15 10 ND ND ug/L 05/13/16 10 ND ND ug/L 11/09/16 10 ND ND ug/L 05/10/17 10 ND ND Silver ug/L 05/23/07 10 ND ND ug/L 11/15/07 10 ND ND ug/L 05/28/08 10 28.0 J 2.9 J ug/L 11/20/08 10 ND ND ug/L 05/28/09 10 18.1 J ND ug/L 11/12/09 10 ND ND ug/L 05/27/10 10 ND ND ug/L 11/15/10 10 ND ND ug/L 05/12/11 10 2.86 J NDug/L 11/17/11 10 ND ND ug/L 05/10/12 10 ND ND ug/L 11/09/12 10 ND NDug/L 05/15/13 10 ND ND ug/L 11/13/13 10 ND ND ug/L 05/14/14 10 ND NDug/L 11/19/14 10 ND ND ug/L 05/12/15 10 ND ND ug/L 11/12/15 10 ND ND ug/L 05/13/16 10 12.3 J ND ug/L 11/09/16 10 ND ND ug/L 05/10/17 10 ND ND Thallium ug/L 05/23/07 5.5 ND ND ug/L 11/15/07 5.5 ND ND ug/L 05/29/08 5.5 ND ND ug/L 11/20/08 5.5 ND ND ug/L 05/28/09 5.5 ND ND ug/L 11/12/09 5.5 ND ND ug/L 05/27/10 5.5 ND ND ug/L 11/15/10 5.5 ND ND ug/L 05/12/11 5.5 7.80 J ND ug/L 11/17/11 5.5 1.52 J ND ug/L 05/10/12 5.5 ND ND ug/L 11/09/12 5.5 ND ND ug/L 05/15/13 5.5 ND NDug/L 11/13/13 5.5 ND ND ug/L 05/14/14 5.5 ND ND ug/L 11/19/14 5.5 ND NDug/L 05/12/15 5.5 ND ND ug/L 11/12/15 5.5 ND ND ug/L 05/13/16 5.5 ND NDug/L 11/09/16 5.5 ND ND ug/L 05/10/17 5.5 ND ND July 2017 Page 5 of 12 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Detected Monitoring Constituent/Parameter Units Sample Date SWS Reporting Limit TABLE 10 Summary of Detected Leachate Parameters Sampson County Active MSW Landfill, Permit No. 82-02 Leachate Blanks Vanadium ug/L 05/24/06 40 54 ND ug/L 11/27/06 50 237 ND ug/L 05/23/07 25 54.5 ND ug/L 11/15/07 25 16.0 J ND ug/L 05/28/08 25 42.0 J 1.2 J ug/L 11/20/08 25 35.0 J NDug/L 05/28/09 25 88.8 J ND ug/L 11/12/09 25 69.5 ND ug/L 05/27/10 25 65.9 NDug/L 11/15/10 25 63.2 ND ug/L 05/12/11 25 49.5 ND ug/L 11/17/11 25 73.1 J NDug/L 05/10/12 25 115 ND ug/L 11/09/12 25 83.4 J ND ug/L 05/15/13 25 127 ND ug/L 11/13/13 25 122 ND ug/L 05/14/14 25 105 ND ug/L 11/19/14 25 119 ND ug/L 05/12/15 25 123 ND ug/L 11/12/15 25 125 ND ug/L 05/13/16 25 198 ND ug/L 11/09/16 25 102 ND ug/L 05/10/17 25 134 ND Zinc ug/L 05/24/06 50 409 ND ug/L 05/23/07 10 373 ND ug/L 11/15/07 10 705 ND ug/L 05/28/08 10 678 1.8 J ug/L 11/20/08 10 423 4.6 J ug/L 05/28/09 10 354 ND ug/L 11/12/09 10 270 ND ug/L 05/27/10 10 225 NDug/L 11/15/10 10 383 ND ug/L 05/12/11 10 178 ND ug/L 11/17/11 10 228 NDug/L 05/10/12 10 520 ND ug/L 11/09/12 10 204 ND ug/L 05/15/13 10 181 NDug/L 11/13/13 10 219 ND ug/L 05/14/14 10 423 ND ug/L 11/19/14 10 232 ND ug/L 05/12/15 10 215 ND ug/L 11/12/15 10 160 ND ug/L 05/13/16 10 387 ND ug/L 11/09/16 10 956 ND ug/L 05/10/17 10 550 ND Acetone ug/L 05/24/06 100 1610 ND ug/L 11/27/06 100 5300 ND ug/L 05/23/07 100 11000 6.6 J ug/L 11/15/07 100 33 J ND ug/L 05/28/08 100 1600 2.9 J ug/L 11/20/08 100 1500 9.8 ug/L 05/28/09 100 5200 ND ug/L 11/12/09 100 1000 ND ug/L 05/27/10 100 ND ND ug/L 11/15/10 100 5900 ND ug/L 05/12/11 100 ND NDug/L 11/17/11 100 3100 ND ug/L 05/10/12 100 93 J ND ug/L 11/09/12 100 44 J NDug/L 05/15/13 100 ND ND ug/L 11/13/13 100 2700 ND ug/L 05/14/14 100 1400 NDug/L 11/19/14 100 ND ND ug/L 05/12/15 100 2100 ND ug/L 11/12/15 100 24 J ND ug/L 05/13/16 100 13000 ND ug/L 11/09/16 100 14000 ND ug/L 05/10/17 100 11000 ND July 2017 Page 6 of 12 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Detected Monitoring Constituent/Parameter Units Sample Date SWS Reporting Limit TABLE 10 Summary of Detected Leachate Parameters Sampson County Active MSW Landfill, Permit No. 82-02 Leachate Blanks Benzene ug/L 11/27/06 5 10.6 ND ug/L 05/23/07 1 ND ND ug/L 11/15/07 1 ND ND ug/L 05/28/08 1 ND ND ug/L 11/20/08 1 4.6 J ND ug/L 05/28/09 1 ND NDug/L 11/12/09 1 ND ND ug/L 05/27/10 1 ND ND ug/L 11/15/10 1 ND NDug/L 05/12/11 1 ND ND ug/L 11/17/11 1 ND ND ug/L 05/10/12 1 2.2 J NDug/L 11/09/12 1 ND ND ug/L 05/15/13 1 6.2 ND ug/L 11/13/13 1 ND ND ug/L 05/14/14 1 ND ND ug/L 11/19/14 1 ND ND ug/L 05/12/15 1 ND ND ug/L 11/12/15 1 4.9 J ND ug/L 05/13/16 1 ND ND ug/L 11/09/16 1 ND ND ug/L 05/10/17 1 ND ND 1,4-Dichlorobenzene ug/L 05/23/07 1 ND ND ug/L 11/15/07 1 ND ND ug/L 05/29/08 1 ND ND ug/L 11/20/08 1 5.5 J ND ug/L 05/28/09 1 ND ND ug/L 11/12/09 1 ND ND ug/L 05/27/10 1 ND ND ug/L 11/15/10 1 ND ND ug/L 05/12/11 1 ND NDug/L 11/17/11 1 9.7 J ND ug/L 05/10/12 1 4.3 J ND ug/L 11/09/12 1 3.6 J NDug/L 05/15/13 1 ND ND ug/L 11/13/13 1 ND ND ug/L 05/14/14 1 ND NDug/L 11/19/14 1 ND ND ug/L 05/12/15 1 4.2 J ND ug/L 11/12/15 1 7.5 J ND ug/L 05/13/16 1 ND ND ug/L 11/09/16 1 ND ND ug/L 05/10/17 1 ND ND 1,2-Dichloroethane ug/L 11/27/06 5 6.6 ND ug/L 05/23/07 1 ND ND ug/L 11/15/07 1 ND ND ug/L 05/28/08 1 ND ND ug/L 11/20/08 1 ND ND ug/L 05/28/09 1 ND ND ug/L 11/12/09 1 ND ND ug/L 05/27/10 1 ND ND ug/L 11/15/10 1 ND ND ug/L 05/12/11 1 ND ND ug/L 11/17/11 1 ND ND ug/L 05/10/12 1 ND ND ug/L 11/09/12 1 ND NDug/L 05/15/13 1 ND ND ug/L 11/13/13 1 ND ND ug/L 05/14/14 1 ND NDug/L 11/19/14 1 ND ND ug/L 05/12/15 1 9.7 J ND ug/L 11/12/15 1 ND NDug/L 05/13/16 1 ND ND ug/L 11/09/16 1 ND ND ug/L 05/10/17 1 ND ND July 2017 Page 7 of 12 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Detected Monitoring Constituent/Parameter Units Sample Date SWS Reporting Limit TABLE 10 Summary of Detected Leachate Parameters Sampson County Active MSW Landfill, Permit No. 82-02 Leachate Blanks cis-1,2-Dichloroethene ug/L 11/27/06 5 5.4 ND ug/L 05/23/07 5 ND ND ug/L 11/15/07 5 ND ND ug/L 05/28/08 5 ND ND ug/L 11/20/08 5 ND ND ug/L 05/28/09 5 ND NDug/L 11/12/09 5 ND ND ug/L 05/27/10 5 ND ND ug/L 11/15/10 5 ND NDug/L 05/12/11 5 ND ND ug/L 11/17/11 5 ND ND ug/L 05/10/12 5 ND NDug/L 11/09/12 5 ND ND ug/L 05/15/13 5 ND ND ug/L 11/13/13 5 ND ND ug/L 05/14/14 5 ND ND ug/L 11/19/14 5 ND ND ug/L 05/12/15 5 ND ND ug/L 11/12/15 5 4.8 J ND ug/L 05/13/16 5 ND ND ug/L 11/09/16 5 ND ND ug/L 05/10/17 5 ND ND Ethylbenzene ug/L 05/24/06 5 6.1 ND ug/L 11/27/06 5 18.4 ND ug/L 05/23/07 1 ND ND ug/L 11/15/07 1 ND ND ug/L 05/28/08 1 ND ND ug/L 11/20/08 1 12 ND ug/L 05/28/09 1 ND ND ug/L 11/12/09 1 8.6 J ND ug/L 05/27/10 1 ND NDug/L 11/15/10 1 22 J ND ug/L 05/12/11 1 ND ND ug/L 11/17/11 1 13 NDug/L 05/10/12 1 7.3 ND ug/L 11/09/12 1 5.2 ND ug/L 05/15/13 1 7.2 NDug/L 11/13/13 1 ND ND ug/L 05/14/14 1 4.0 J ND ug/L 11/19/14 1 ND ND ug/L 05/12/15 1 ND ND ug/L 11/12/15 1 16 ND ug/L 05/13/16 1 ND ND ug/L 11/09/16 1 ND ND ug/L 05/10/17 1 ND ND 2-Hexanone ug/L 05/23/07 50 ND ND ug/L 11/15/07 50 ND ND ug/L 05/29/08 50 ND ND ug/L 11/20/08 50 ND ND ug/L 05/28/09 50 ND ND ug/L 11/12/09 50 ND ND ug/L 05/27/10 50 ND ND ug/L 11/15/10 50 ND ND ug/L 05/12/11 50 ND ND ug/L 11/17/11 50 ND ND ug/L 05/10/12 50 6.7 J NDug/L 11/09/12 50 ND ND ug/L 05/15/13 50 ND ND ug/L 11/13/13 50 ND NDug/L 05/14/14 50 ND ND ug/L 11/19/14 50 ND ND ug/L 05/12/15 50 ND NDug/L 11/12/15 50 26 J ND ug/L 05/13/16 50 ND ND ug/L 11/09/16 50 ND ND ug/L 05/10/17 50 ND ND July 2017 Page 8 of 12 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Detected Monitoring Constituent/Parameter Units Sample Date SWS Reporting Limit TABLE 10 Summary of Detected Leachate Parameters Sampson County Active MSW Landfill, Permit No. 82-02 Leachate Blanks 2-Butanone ug/L 05/24/06 100 2100 ND ug/L 11/27/06 100 8590 ND ug/L 05/23/07 100 13000 ND ug/L 11/15/07 100 ND ND ug/L 05/28/08 100 1500 ND ug/L 11/20/08 100 2500 NDug/L 05/28/09 100 8300 ND ug/L 11/12/09 100 800 ND ug/L 05/27/10 100 ND NDug/L 11/15/10 100 11000 ND ug/L 05/12/11 100 ND ND ug/L 11/17/11 100 3200 NDug/L 05/10/12 100 ND ND ug/L 11/09/12 100 ND ND ug/L 05/15/13 100 48 J ND ug/L 11/13/13 100 2700 ND ug/L 05/14/14 100 1300 ND ug/L 11/19/14 100 ND ND ug/L 05/12/15 100 3100 ND ug/L 11/12/15 100 78 J ND ug/L 05/13/16 100 8800 ND ug/L 11/09/16 100 19000 ND ug/L 05/10/17 100 11000 ND 4-Methyl-2-pentanone ug/L 11/27/06 100 121 ND ug/L 05/23/07 100 150 ND ug/L 11/15/07 100 ND ND ug/L 05/28/08 100 ND ND ug/L 11/20/08 100 50 J ND ug/L 05/28/09 100 ND ND ug/L 11/12/09 100 ND ND ug/L 05/27/10 100 ND NDug/L 11/15/10 100 99 J ND ug/L 05/12/11 100 ND ND ug/L 11/17/11 100 30 J NDug/L 05/10/12 100 42 J ND ug/L 11/09/12 100 23 J ND ug/L 05/15/13 100 56 J NDug/L 11/13/13 100 29 J ND ug/L 05/14/14 100 31 J ND ug/L 11/19/14 100 ND ND ug/L 05/12/15 100 62 J ND ug/L 11/12/15 100 150 ND ug/L 05/13/16 100 88 J ND ug/L 11/09/16 100 140 J ND ug/L 05/10/17 100 ND ND Toluene ug/L 11/27/06 5 95.4 ND ug/L 05/23/07 1 20 ND ug/L 11/15/07 1 ND ND ug/L 05/28/08 1 ND ND ug/L 11/20/08 1 19 ND ug/L 05/28/09 1 27 J ND ug/L 11/12/09 1 12 J ND ug/L 05/27/10 1 ND ND ug/L 11/15/10 1 46 J ND ug/L 05/12/11 1 ND ND ug/L 11/17/11 1 16 NDug/L 05/10/12 1 12 ND ug/L 11/09/12 1 13 ND ug/L 05/15/13 1 14 NDug/L 11/13/13 1 11 J ND ug/L 05/14/14 1 6.6 J ND ug/L 11/19/14 1 6.3 J NDug/L 05/12/15 1 17 ND ug/L 11/12/15 1 32 ND ug/L 05/13/16 1 ND ND ug/L 11/09/16 1 26 J ND ug/L 05/10/17 1 ND ND July 2017 Page 9 of 12 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Detected Monitoring Constituent/Parameter Units Sample Date SWS Reporting Limit TABLE 10 Summary of Detected Leachate Parameters Sampson County Active MSW Landfill, Permit No. 82-02 Leachate Blanks Trichloroethene ug/L 05/23/07 1 ND ND ug/L 11/15/07 1 9.6 ND ug/L 05/28/08 1 ND ND ug/L 11/20/08 1 ND ND ug/L 05/28/09 1 ND ND ug/L 11/12/09 1 ND NDug/L 05/27/10 1 ND ND ug/L 11/15/10 1 ND ND ug/L 05/12/11 1 ND NDug/L 11/17/11 1 ND ND ug/L 05/10/12 1 ND ND ug/L 11/09/12 1 ND NDug/L 05/15/13 1 ND ND ug/L 11/13/13 1 ND ND ug/L 05/14/14 1 ND ND ug/L 11/19/14 1 ND ND ug/L 05/12/15 1 ND ND ug/L 11/12/15 1 ND ND ug/L 05/13/16 1 ND ND ug/L 11/09/16 1 ND ND ug/L 05/10/17 1 ND ND Xylenes (Total)ug/L 05/24/06 5 8.9 ND ug/L 11/27/06 5 38.7 ND ug/L 05/23/07 4 ND ND ug/L 11/15/07 5 ND ND ug/L 05/28/08 5 ND ND ug/L 11/20/08 5 26 ND ug/L 05/28/09 5 22 J ND ug/L 11/12/09 5 12 J ND ug/L 05/27/10 5 ND ND ug/L 11/15/10 5 28 J NDug/L 05/12/11 5 ND ND ug/L 11/17/11 5 32 ND ug/L 05/10/12 5 18 NDug/L 11/09/12 5 12 J ND ug/L 05/15/13 5 15 ND ug/L 11/13/13 5 ND NDug/L 05/14/14 5 5.7 J ND ug/L 11/19/14 5 4.6 J ND ug/L 05/12/15 5 ND ND ug/L 11/12/15 5 33 ND ug/L 05/13/16 5 ND ND ug/L 11/09/16 5 ND ND ug/L 05/10/17 5 ND ND Nitrate as N mg/L 05/24/06 --0.14 ND mg/L 11/27/06 --0.18 ND mg/L 05/23/07 --0.51 ND mg/L 11/15/07 10 ND -- mg/L 05/28/08 10 ND ND mg/L 11/20/08 10 ND ND mg/L 05/28/09 10 ND ND mg/L 11/12/09 10 ND -- mg/L 05/27/10 10 ND ND mg/L 11/15/10 10 ND - mg/L 05/12/11 10 ND ND mg/L 11/17/11 10 ND -mg/L 05/10/12 10 ND -- mg/L 11/09/12 10 ND - mg/L 05/15/13 10 0.8 J NDmg/L 11/13/13 10 ND - mg/L 05/14/14 10 ND ND mg/L 11/19/14 10 ND NDmg/L 05/12/15 10 0.18 J ND mg/L 11/12/15 10 ND ND mg/L 05/13/16 10 0.140 J ND mg/L 11/09/16 10 0.03 J ND mg/L 05/10/17 10 ND ND July 2017 Page 10 of 12 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Detected Monitoring Constituent/Parameter Units Sample Date SWS Reporting Limit TABLE 10 Summary of Detected Leachate Parameters Sampson County Active MSW Landfill, Permit No. 82-02 Leachate Blanks Sulfate as SO4 mg/L 05/24/06 --10.9 ND mg/L 11/27/06 5 ND ND mg/L 05/23/07 250 140 2.5 J mg/L 11/15/07 250 26 J ND mg/L 05/28/08 250 19 J ND mg/L 11/20/08 250 5.2 J NDmg/L 05/28/09 250 2.7 J ND mg/L 11/12/09 250 9.5 J ND mg/L 05/27/10 250 25 J NDmg/L 11/15/10 250 6.6 J ND mg/L 05/12/11 250 12 J ND mg/L 11/17/11 250 ND NDmg/L 05/10/12 250 160 J ND mg/L 11/09/12 250 7.6 J ND mg/L 05/15/13 250 8.7 J ND mg/L 11/13/13 250 4.3 J ND mg/L 05/14/14 250 280 ND mg/L 11/19/14 250 32 J ND mg/L 05/12/15 250 5.9 J ND mg/L 11/12/15 250 ND ND mg/L 05/13/16 250 69 J ND mg/L 11/09/16 250 ND ND mg/L 05/10/17 250 ND ND Biochemical Oxygen Demand mg/L 05/24/06 --920 -- mg/L 11/27/06 --1849 -- mg/L 05/23/07 --2500 -- mg/L 11/15/07 --540 ND mg/L 05/28/08 --1700 ND mg/L 11/20/08 -->230 ND mg/L 05/28/09 --560 ND mg/L 11/12/09 --340 NDmg/L 05/27/10 --ND ND mg/L 11/15/10 --> 2300 ND mg/L 05/12/11 --55 NDmg/L 11/17/11 --390 ND mg/L 05/10/12 --240 ND mg/L 11/09/12 --230 NDmg/L 05/15/13 --630 ND mg/L 11/13/13 -->750 ND mg/L 05/14/14 --420 ND mg/L 11/19/14 --290 ND mg/L 05/12/15 --420 ND mg/L 11/12/15 --650 ND mg/L 05/13/16 --2500 ND mg/L 11/09/16 --2300 ND mg/L 05/10/17 --2100 ND Chemical Oxygen Demand mg/L 05/24/06 --3901 -- mg/L 11/27/06 --2685 -- mg/L 05/23/07 --9000 -- mg/L 11/15/07 --4800 ND mg/L 05/28/08 --4600 ND mg/L 11/20/08 --4300 ND mg/L 05/28/09 --5500 ND mg/L 11/12/09 --5000 ND mg/L 05/27/10 --2700 ND mg/L 11/15/10 --6300 NDmg/L 05/12/11 --2700 ND mg/L 11/17/11 --4400 ND mg/L 05/10/12 --5100 NDmg/L 11/09/12 --3500 ND mg/L 05/15/13 --5900 ND mg/L 11/13/13 --5700 NDmg/L 05/14/14 --5000 ND mg/L 11/19/14 --5900 ND mg/L 05/12/15 --5900 ND mg/L 11/12/15 --5500 ND mg/L 05/13/16 --10000 ND mg/L 11/09/16 --7800 ND mg/L 05/10/17 --8300 ND July 2017 Page 11 of 12 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Detected Monitoring Constituent/Parameter Units Sample Date SWS Reporting Limit TABLE 10 Summary of Detected Leachate Parameters Sampson County Active MSW Landfill, Permit No. 82-02 Leachate Blanks Phosphorus mg/L 05/24/06 --2.56 ND mg/L 11/27/06 --0.61 ND mg/L 05/23/07 --1.9 ND mg/L 11/15/07 --3.0 ND mg/L 05/28/08 --2.6 ND mg/L 11/20/08 --3.4 NDmg/L 05/28/09 --3.9 ND mg/L 11/12/09 --5.0 ND mg/L 05/27/10 --2.5 NDmg/L 11/15/10 --3.1 ND mg/L 05/12/11 --1.3 ND mg/L 11/17/11 --3.8 NDmg/L 05/10/12 --4.2 ND mg/L 11/09/12 --2.6 ND mg/L 05/15/13 --5.1 ND mg/L 11/13/13 --5.6 ND mg/L 05/14/14 --5.4 ND mg/L 11/19/14 --7.0 ND mg/L 05/12/15 --9.0 ND mg/L 11/12/15 --8.2 ND mg/L 05/13/16 --6.7 J ND mg/L 11/09/16 --10 0.038 mg/L 05/10/17 --12 ND pH (field)S.U.05/24/06 --7.2 -- S.U.11/20/06 --7.0 -- S.U.05/23/07 --7.80 -- S.U.11/15/07 --8.38 -- S.U.05/28/08 --8.08 -- S.U.11/20/08 --7.97 -- S.U.05/28/09 --7.82 -- S.U.11/12/09 --8.08 --S.U.05/26/10 --8.30 -- S.U.11/15/10 --7.89 -- S.U.05/09/11 --8.35 --S.U.11/17/11 --7.82 -- S.U.05/10/12 --8.39 -- S.U.11/09/12 --8.06 --S.U.05/15/13 --7.91 -- S.U.11/13/13 --8.16 -- S.U.05/14/14 --8.34 -- S.U.11/19/14 --9.19 -- S.U.05/12/15 --8.04 -- S.U.11/12/15 --6.77 -- S.U.05/13/16 --8.78 -- S.U.11/09/16 --8.02 -- S.U.05/10/17 --8.09 -- Specific Conductance (field)µS/cm 05/24/06 --9980 -- µS/cm 11/20/06 --4280 -- µS/cm 05/23/07 --2240 -- µS/cm 11/15/07 --2210 -- µS/cm 05/28/08 --1080 -- µS/cm 11/20/08 --2050 -- µS/cm 05/28/09 --2216 -- µS/cm 11/12/09 --1101 -- µS/cm 05/26/10 --1847 -- µS/cm 11/15/10 --1854 --µS/cm 05/09/11 --1824 -- uS/cm 11/17/11 --1950 -- uS/cm 05/10/12 --1917 --µS/cm 11/09/12 --1357 -- µS/cm 05/15/13 --25990 -- uS/cm 11/13/13 --18021 --µS/cm 05/14/14 --21715 -- µS/cm 11/19/14 --20440 -- µS/cm 05/12/15 --22660 -- uS/cm 11/12/15 --25521 -- uS/cm 05/13/16 --32730 -- uS/cm 11/09/16 --25550 -- uS/cm 05/10/17 --29013 -- July 2017 Page 12 of 12 Project No. 0739603717.100 G:\PROJECTS\Waste Industries\Sampson County\Active MSW Landfill 82-02\0739603717 WI 2017 Sampson LF-NC\Phase 100 WQMR\600 Calculations\Sampson County Active MSW Landfill May 2017.xlsx Detected Monitoring Constituent/Parameter Units Sample Date SWS Reporting Limit TABLE 10 Summary of Detected Leachate Parameters Sampson County Active MSW Landfill, Permit No. 82-02 Leachate Blanks Temperature (field)°C 05/24/06 --23 -- °C 11/20/06 --19 -- °C 05/23/07 --28.83 -- °C 11/15/07 --14.55 -- °C 05/28/08 --24.78 -- °C 11/20/08 --18.97 --°C 05/28/09 --25.44 -- °C 11/12/09 --15.56 -- °C 05/26/10 --34.88 --°C 11/15/10 --19.94 -- °C 05/09/11 --18.24 -- °C 11/17/11 --23.42 --°C 05/10/12 --17.99 -- °C 11/09/12 --15.21 -- °C 05/15/13 --28.72 -- °C 11/13/13 --13.70 -- °C 05/14/14 --30.40 -- °C 11/19/14 --13.40 -- °C 05/12/15 --33.90 -- °C 11/12/15 --18.60 -- °C 05/13/16 --28.60 -- °C 11/09/16 --21.51 -- °C 05/10/17 --28.6 -- Turbidity (field)NTU 05/23/07 --206 ND NTU 11/15/07 --421 ND NTU 05/28/08 --963 -- NTU 11/20/08 --52.7 -- NTU 05/28/09 --NM -- NTU 11/12/09 --40.1 -- NTU 05/26/10 ------ NTU 11/15/10 ------NTU 05/09/11 ------ NTU 11/17/11 ------ NTU 05/10/12 -->1000 --NTU 11/09/12 --51.7 -- NTU 05/15/13 --98.2 -- NTU 11/13/13 --86.6 --NTU 05/14/14 --278 -- NTU 11/09/14 --357 -- NTU 05/12/15 --66.9 -- NTU 11/12/15 --189 -- NTU 05/13/16 -->1000 -- NTU 11/09/16 -->1000 -- NTU 05/10/17 -->1000 -- Notes: mg/L =milligrams per liter ug/L =micrograms per literS.U. =Standard UnitsND =Not detected at the stated reporting limitNM =Not Measured J =Estimated value µS/cm=microsiemens per centimeterNTU =Nephelometric Turbidity Units°C =degrees Celsius-- =no data available or no limit established Blanks =field, trip and/or method blanks SWS Reporting Limit =NCPQL or lab-specific reporting limit prior to 2007 and NCSWSL starting on 01/18/071) Data prior to 2/28/07 provided by Richardson, Smith, Gardner and Associates.2) The following dilutions were noted for the May 2017 event: Antimony (10x), Selenium 120x), Thalium (10x), COD (20x), Phosphorus (4x), Sulfate (50x), and VOCs (100x) DRAWING 1601601501501 5 0 150 150 150 150150 150150 150150 15 0 150 140 140 150150 15 0 140 14 0 15 0 150 140 140 1 4 0 140 1 5 0 140 130130 140 140140 150 13013 0 120 120 120 130 130 130130120130130 130 130120 130 130130140 140140 140 140 140 14 0 140 140 140 140 130 120 130 120 120 130 140 150 160 170 170 160 140 150 120140 140150 150 150 150 160150140 150 150 150 15 0 150 160 160160160 1 6 0 16 0 16 0 160 160 160 170 160 160 160160160 17016 0 170 170 170 170 160 160 150 150 160 150150 150160 160 160 170 170 180 170 180 190 200 210 220 230 240 140 140 140 140 150 150 160 160 160 18019020021022023024 0 250220 230 250 260 270 190 200 210 240 140 150 150140 260 270 280 190 200 210 230 240 250 220 170 180 160 27 0 26 0 280 280 26027025020021022023024017018019016015 0 140 130140 12013012011013 0 12011 0 13 0 28 0 2 8 0 280 260 27 0 240 250 16 0 1 9 0 200 21 0 2 2 0 2 3 0 17 0 18 0 14 0 15 0 1 3 0 120120120 110 120 130140 150 110 110 120 120 120 18 0 18 0 15 0 16 0 17 0 14 0 130130130130 160 140150 140 160 150 170 180 190 200 220 230 240 210 250 260 270 160 140 180150 170 130 130 140 140170 180 190 200 210 220230 250 260 270280290300 240 30 0 27 0 280 29 0300 150 150 150140 150 150 160 160 160 19 0 200 180210220230 24 0 2 5 0 2 7 0 28 0 26 0 29 0 24 0 300 300 170 150 15 0 160 160 170160170 18 0 1 9 0 20 0210220 23 0 230 2 2 0 15 0150150 150 150 160 160 16 0 160 170 16 0 170 150 160 150 16 015016 0 160 170 160 160 160 160160 160 16 0 160 160 160160160160 160 160160 160 160 160 160 160 170 160 170 160 160 160 1 6 0 160 160 160 160 160 160160 160 150 150 160 160 170 160150 150 150 150 150 150150150150 160 170170 160 1 5 0 160 17 0 17 0 140 16 0 150140140140 140 140 130 130130150170180160140150170 140 160 130130 120165.0 165.8 168.3 155.4 160.1 164.7 154.5 156.9 151.8 151.2 154.9 156.0 154.8 156.2 154.5 145.4 157.3 143.3 159.6 139.2 136.1 141.5 138.9 133.2 138.7 135.2 153.0 133.2 135.8 134.9 126.2 139.2 135.4 152.4 151.4 142.5 140.8 136.7 137.2 142.4 153.3 154.9 146.7 151.2 149.9 153.1 148.6 161.0 154.9 150.9 WE 150.1' WE 149.6' 152.6 150.9 152.6 159.6 164.2 156.8 157.0 153.5 WE 157.2'WE 150.3' WE 154.4' 155.0 166.4 150.8 154.7 155.3 153.9 153.7 151.3 151.5 151.0 151.3 154.5 152.3 150.5 155.0 151.7 149.2 158.4 158.0 156.8 156.9 WE 147.7' WE 147.8' WE 147,2' WE 148.1' WE 147.3' 148.9 152.4 153.5149.1 154.8 146.7 146.8 153.2 155.5 153.0 148.9 151.9 151.6 152.6 152.3 152.3 151.4 WE 138.0' 150.5 143.3 140.4 139.8 132.7 139.6 131.4 130.4 127.8 128.8 131.2 132.7 135.2 132.8 133.6 136.4 132.8 141.2 142.8 137.4 142.1 141.9 115.2 113.3 135.4 148.7 147.7 149.7 142.7134.9 143.2 140.1 145.2 145.4 145.9 143.8 154.2 146.6 153.3 154.8 165.2 159.9 157.1 163.4 161.2 160.3 153.2 158.7 155.9 156.6 158.3 157.2 156.6 159.3 164.6 164.8 159.0 160.6 159.7 160.5 163.4 158.1 159.3 159.5 160.1160.3 171.4 165.4 172.2 152.5 160.5 152.8 151.5 156.3 164.4 167.2 178.6 175.3 178.6 176.8 181.8182.1 173.3 155.8 154.7 148.9 163.8 178.7 175.6 178.9 176.9 175.4 WE 147.9' WE 147.9' 149.6 161.0 166.2 160.4 161.5 158.7 136.7 154.3 157.8 157.3 165.7 171.3 157.6 169.1 148.5 148.4 146.1 137.3 148.2 WE 144.9' WE 139.6' WE 135.4' 155.1153.6 163.7 143.3 142.4 143.5 177.2 131.1 152.8 147.4 128.7 135.4 WE 127.2' 159.8 159.8 273.5 288.0 282.2 286.3 163.5 154.5 235.1 159.3 159.1 177.1 184.5 177.1 176.9 176.1 174.8 172.9 169.9 170.7 179.7 175.2 179.9 184.9 177.2 177.1 184.5 161.4 162.4 156.5 162.6 159.5 160.7 160.9 161.1 160.6 169.1 179.0 171.2 178.3 177.1 WE 137.7' 175.7 171.1 170.9 177.0 185.1 157.3 168.9 154.3 262.3 260.8 295.5 293.8 305.0 303.7 304.9 306.4 307.0 302.3 302.6 303.4 267.3 261.5265.3 262.6 265.6 274.5 271.2 241.7 282.6 282.8 273.4 273.5 278.9 274.4 150.6 138.7 132.7 137.5 113.8 107.6 127.3 118.9 121.4 138.8 WE 106.8' 123.2 127.9 128.7 127.5 122.2 137.7 129.7 127.2 264.5 306.1 305.0 299.2 300.5 298.8 299.3 WE 297.2' 300.5 302.3 231.5 225.6 160.6 156.6 156.8 147.5 157.2 154.2 154.2 150.2 147.8 148.3 150.2 148.6 161.0 160.6 158.9 146.6 147.7 146.1 144.6 149.7 161.4165.7 164.6 159.1 141.0 WE 140.4' WE 155.1' 169.5 170.6 160.1 161.3 167.4 WE 153.9' 160.2 158.3 157.7 159.1 158.6 159.1 159.5 167.6 163.2 163.5 153.6 159.1 158.3 143.9 153.3 145.2 143.3 151.0 148.7 153.5 147.2 151.3 152.5 154.9 227.1 297.3 148.6 151.1 159.7 164.2 129.9 125.0 127.0 128.2 137.1 137.2 176.7 174.8 182.8183.1 177.6 181.2 176.7 143.2 144.9 150.3 152.6 151.4 150.0 145.5 145.5 154.3 153.2 151.3 161.1 157.7 139.7 145.0 146.7 150.8 165.2 175.2155.5 175.0 171.5 169.7 157.4 157.4 157.9 158.1 153.9163.2 172.8 159.5 161.3 161.1 160.6 161.3 159.9 160.5 161.0 163.2 163.1 163.6 160.9 WE 159.3' 173.4 160.9 160.8 162.1 160.5 159.4 159.2 WE 157.8' WE 158.0' 160.8 160.8 157.7 160.9 160.5 153.7 152.6 154.6 150.9 149.3 147.6 150.3 147.4 176.2 175.6 148.0 147.5 145.2 143.2 145.2 140.6 149.2 147.7 147.4 144.0 137.3 136.7 669 119.69 676155.68 MHMHMHMHMHMH MHMH MH MHMH MH MH MH MH MH MH MH MH MH MH MH MH MH14013 5 125 125130140135130 14 5 145120120 i1 i2 i3 C&D DISPOSAL AREA GGI-2 GGI-3 GM-7 GGI-1 MW-5BN125.62 126.51MW-5AN MW-4N129.11 MW-1N MW-3NMW-2N MW-106125.69 MW-102A 143.44 MW-103A 145.37 138.10 125.66126.27 MW-105A 125.41 SW-5 GM-1 MW-107D 125.10MW-107S125.44GM-2 MW-108 120.19 MW-104131.82 EXISTING MSW DISPOSAL AREA FUTURE MSW DISPOSAL AREA 139.13MW-100B GP-2 GP-3 GP-5 GP-4 GP-6 GP-7 GP-1 GM-19 GM-18 GGI OUTFALL 1 GGI OUTFALL 2 IF THIS MEASUREMENT DOES NOT MATCH WHAT IS SHOWN, THE SHEET SIZE HAS BEEN MODIFIED FROM: ANSI DCONSULTANT DESIGN PREPARED REVIEW APPROVED YYYY-MM-DD TITLE PROJECT No.Rev. PROJECT CLIENT Path: \\atlanta\Cadd\Waste Industries\07396037 - WI - Sampson Active\Production\_C-2017 WQM REPORTS MAPS\ | File Name: 0739603717C001.dwg01 in0739603717 PHASE 100 DRAWING 10 2017/0526 SEP WBB RPK RPK SAMPSON COUNTY, LLC ACTIVE LANDFILLS, PERMIT NO. 82-02 SAMPSON COUNTY, NC WASTE INDUSTRIES USA, INC. GROUNDWATER CONTOUR MAP MAY 8, 2017 EXISTING 10-FOOT GROUND SURFACE CONTOUR EXISTING 2-FOOT GROUND SURFACE CONTOUR APPROXIMATE LIMITS OF WASTE PROPERTY LINE EXISTING ROAD GROUNDWATER ELEVATION 5 FT CONTOURS GROUNDWATER FLOW ARROW MONITORING WELL AND IDENTIFICATION LANDFILL GAS MONITORING PROBE GRAVITY GROUNDWATER INTERCEPT LOCATION SURFACE WATER MONITORING POINT NOT AVAILABLE LEGEND NOTES i1 140 SW-1S GM-1 / GP-1 GGI-1 131.82 MW-104 NA 1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET 2. GROUNDWATER SURFACE CONTOUR INTERVAL = 5 FEET 3. GROUNDWATER ELEVATIONS MEASURED ON MAY 8, 2017. 4. GROUNDWATER CONTOURS BASED ON LINEAR INTERPOLATION BETWEEN AND EXTRAPOLATION FROM KNOWN DATA, TOPOGRAPHIC CONTOURS, AND KNOWN FIELD CONDITIONS. THEREFORE, GROUNDWATER CONTOURS MAY NOT REFLECT ACTUAL 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. SW-1S IS THE UPSTREAM SAMPLING POINT FOR THE CLOSED LANDFILL ON THE SOUTHERN PROPERTY (PERMIT 82-01). SW-1 IS LOCATED OFF THE MAPPED AREA TO THE NORTHEAST AS SHOWN. 7. MONITORING WELLS MW-1N, MW-2N, MW-3N AND MW-4N ARE FOR THE C&D LANDFILL. 8. MW-107D IS NOT PART OF THE APPROVED MONITORING NETWORK AND THE GROUNDWATER ELEVATIONS WAS NOT USED IN THE CONSTRUCTION OF THE CONTOUR MAP. 9. BASE MAP PROVIDED BY G.N. RICHARDSON & ASSOCIATES, INC. TOPOGRAPHY PROVIDED FROM AERIAL SURVEYS PREPARED BY GEODATA CORP, PHOTOGRAPHY DATES JANUARY 5, 2017 AND MARCH 10, 2014. 10. COORDINATE SYSTEM IS N.C. STATE PLANE GRID. VICINITY MAP 1:121,500 SITE APPENDIX A GROUNDWATER, SURFACE WATER, AND LEACHATE SAMPLING LOGS APPENDIX B NOVEMBER 2016 GROUNDWATER, SURFACE WATER, AND LEACHATE CERTIFICATE- OF-ANALYSIS, CHAIN-OF-CUSTODY FORMS AND LABORATORY DATA REVIEWS Page 1 of 51 Page 2 of 51 Page 3 of 51 Page 4 of 51 Page 5 of 51 Page 6 of 51 Page 7 of 51 Page 8 of 51 Page 9 of 51 Page 10 of 51 Page 11 of 51 Page 12 of 51 Page 13 of 51 Page 14 of 51 Page 15 of 51 Page 16 of 51 Page 17 of 51 Page 18 of 51 Page 19 of 51 Page 20 of 51 Page 21 of 51 Page 22 of 51 Page 23 of 51 Page 24 of 51 Page 25 of 51 Page 26 of 51 Page 27 of 51 Page 28 of 51 Page 29 of 51 Page 30 of 51 Page 31 of 51 Page 32 of 51 Page 33 of 51 Page 34 of 51 Page 35 of 51 Page 36 of 51 Page 37 of 51 Page 38 of 51 Page 39 of 51 Page 40 of 51 Page 41 of 51 Page 42 of 51 Page 43 of 51 Page 44 of 51 Page 45 of 51 Page 46 of 51 Page 47 of 51 Page 48 of 51 Page 49 of 51 Page 50 of 51 Page 51 of 51 Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: Sampson County Active MSW Landfill Project Reference Number: 073-9603717.100 Sampling Event Date: May 8-9, 2017 Review Date: June 1, 2017 Initials: TM Report #: CA06057 QA/QC: 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: MW-100B sampled for NC Appendix I metals only. 1.0 CHAIN OF CUSTODY (COC) REVIEW TM COC was properly signed by all parties. TM Correct project name and number are on the form. TM Sample receipt condition at laboratory was acceptable. TM Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES TM Holding times for extraction and/or analysis were met for each analytical method (see below for reference). GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 4 Review Criteria Method Analytes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW TM Laboratory analyzed at least one internal blank for each method, where applicable. TM Laboratory blank is interference-free. TM Surrogate recoveries are provided for each analytical method, where applicable. TM Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). TM MS/MSD/LCS data results are provided for each analytical method. TM MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). 4.0 ANALYTE LISTS/METHODS TM The proper number of constituents are present for each analyte list as identified above (including detects where applicable). TM Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING TM All analytical reporting associated with the event was performed by the contracted lab. TM Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been ‘flagged’ with a ‘B’ where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 10X for commonly detected laboratory contaminants-acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. • Acetone (trip blank) @ 18 ug/L (J) – B Flag needed: MW-103A • Copper (field blank) @ 2.45 ug/L (J) - B Flags needed: MW-100B, MW-102A, MW-103A, MW 106, MW 107S, MW-108, and GGI Outfall 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 3 of 4 TM It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. • Due to matrix interference, samples MW-107S, MW-108, and GGI Outfall 1 were processed at dilutions for Thallium, resulting in elevated reporting limits • Thallium MW-107S x10, MW-108 x10, GGI 1 Outfall x10 TM The report provides the reporting limit for each constituent. TM The results were reported at or below their proper reporting limits (e.g., NC Solid Waste Section Approved QLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. TM No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Groundwater Protection Standards (GWPS) in wells or field/equipment/trip blanks or Surface Water Standards for surface points. Barium (NC 2L = 700 ug/L) o MW-100B @ 812 ug/L Cobalt (GWPS = 1 ug/L) o MW-103A @ 1.92 (J) o MW-104 @ 5.31 ug/L (J) o MW-105A @ 1.50 ug/L (J) o MW-106 @ 3.12 ug/L (J) o MW-107s @ 37.7 ug/L o MW-108 @ 13.3 ug/L o GGI 1 Outfall @ 37.9 ug/L o GGI 2 Outfall @ 1.38 (J) Chromium (NC 2L = 10 ug/L) o MW-103A @ 21.2 ug/L o MW-107S @ 38.0 ug/L Thallium (GWPS = 0.28 ug/L) o MW-100B @ 0.347 ug/L (J) Vanadium (GWPS = 0.3 ug/L) o MW-103A @ 8.20 ug/L (J) o MW-105A @ 1.58 ug/L (J) o MW-107S@ 24.5 ug/L o GGI 1 Outfall @ 3.13 ug/L (J) TM No inorganic or organic constituents were detected in a well or surface water point at quantified concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). TM Other report issues/Communications with laboratory/etc.: • The detection of toluene in sample MW-106 was confirmed by reprep and reanalysis. The reanalysis is available upon request. Page 1 of 52 Page 2 of 52 Page 3 of 52 Page 4 of 52 Page 5 of 52 Page 6 of 52 Page 7 of 52 Page 8 of 52 Page 9 of 52 Page 10 of 52 Page 11 of 52 Page 12 of 52 Page 13 of 52 Page 14 of 52 Page 15 of 52 Page 16 of 52 Page 17 of 52 Page 18 of 52 Page 19 of 52 Page 20 of 52 Page 21 of 52 Page 22 of 52 Page 23 of 52 Page 24 of 52 Page 25 of 52 Page 26 of 52 Page 27 of 52 Page 28 of 52 Page 29 of 52 Page 30 of 52 Page 31 of 52 Page 32 of 52 Page 33 of 52 Page 34 of 52 Page 35 of 52 Page 36 of 52 Page 37 of 52 Page 38 of 52 Page 39 of 52 Page 40 of 52 Page 41 of 52 Page 42 of 52 Page 43 of 52 Page 44 of 52 Page 45 of 52 Page 46 of 52 Page 47 of 52 Page 48 of 52 Page 49 of 52 Page 50 of 52 Page 51 of 52 Page 52 of 52 Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: Sampson County – Active C&D Wells Project Reference Number: 0739-603717.100 Sampling Event Date: May 8-9, 2017 Review Date: June 1, 2017 Initials: TM Report #: CA06058 QA/QC: 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) X NC Closed Facility/C & D List NC Appendix I NC Appendix I + Detects NC Appendix II NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW TM COC was properly signed by all parties. TM Correct project name and number are on the form. TM Sample receipt condition at laboratory was acceptable. TM Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES TM Holding times for extraction and/or analysis were met for each analytical method (see below for reference). GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 3 Review Criteria Method Analytes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW TM Laboratory analyzed at least one internal blank for each method, where applicable. TM Laboratory blank is interference-free. TM Surrogate recoveries are provided for each analytical method, where applicable. TM Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). TM MS/MSD/LCS data results are provided for each analytical method. TM MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range).  The spike recovery of antimony was outside of control limits for the 6020B MS and MSD samples. The QC batch was approved based on acceptable recovery of this element.  The spike recovery of alkalinity and chloride were outside of control limits for the MS samples. The QC batches were approved based on acceptable recovery of these analytes. 4.0 ANALYTE LISTS/METHODS TM The proper number of constituents are present for each analyte list as identified above (including detects where applicable). TM Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING TM All analytical reporting associated with the event was performed by the contracted lab. TM Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been ‘flagged’ with a ‘B’ where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 10X 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. • Copper (Field Blank) @ 2.45 ug/L (J) – Add B Flags: MW4N, MW5AN. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 3 of 3 TM It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. MW-2N: Alkalinity (2x) MW-3N: Alkalinity (10x) Selenium (10x) TM The report provides the reporting limit for each constituent. TM The results were reported at or below their proper reporting limits (e.g., NC Solid Waste Section Approved QLs). 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. • Sample MW-3N was processed at a dilution for the analysis of selenium via EPA Method 6010D, due to matrix interference, resulting in an elevated reporting limit. TM No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Groundwater Protection Standards (GWPS) in wells or field/equipment/trip blanks or Surface Water Standards in surface points. Chromium (NC 2L = 10 ug/L) • MW4N @ 27.6 ug/L • MW5AN @ 17.0 ug/L Cobalt (GWPS = 1 ug/L) • MW1N @ 1.16 ug/L (J) • MW2N @ 1.20 ug/L (J) • MW4N @ 2.23 ug/L (J) • MW5AN @ 12.5 ug/L • MW5BN @ 1.16 ug/L (J) Iron (NC 2L = 300 ug/L) • MW2N @ 27,100 ug/L • MW3N @ 13200 ug/L • MW4N @ 9570 ug/L • MW5AN @ 3980 • MW5BN @ 580 ug/L Manganese (NC 2L = 50 ug/L) • MW2N @ 203 ug/L • MW3N @ 275 ug/L Vanadium (NC 2L = 0.3 ug/L) • MW4N @ 26.6 ug/L • MW5AN @ 8.94 ug/L TM No inorganic or organic constituents were detected in a well or surface water point at quantified concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). TM Other report issues/Communications with laboratory/etc.: Page 1 of 21 Page 2 of 21 Page 3 of 21 Page 4 of 21 Page 5 of 21 Page 6 of 21 Page 7 of 21 Page 8 of 21 Page 9 of 21 Page 10 of 21 Page 11 of 21 Page 12 of 21 Page 13 of 21 Page 14 of 21 Page 15 of 21 Page 16 of 21 Page 17 of 21 Page 18 of 21 Page 19 of 21 Page 20 of 21 Page 21 of 21 Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: Sampson County Active MSW Landfill, Surface Waters Project Reference Number: 073-9603717.100 Sampling Event Date: May 09, 2017 Review Date: June 1, 2017 Initials: TM Report #: CA06061 QA/QC: 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 TM COC was properly signed by all parties. TM Correct project name and number are on the form. TM Sample receipt condition at laboratory was acceptable. TM Each sample and blank submitted for analysis appears in the report. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 3 2.0 SAMPLE HOLDING TIMES TM Holding times for extraction and/or analysis were met for each analytical method (see below for reference). Review Criteria Method Analytes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW TM Laboratory analyzed at least one internal blank for each method, where applicable. TM Laboratory blank is interference-free. TM Surrogate recoveries are provided for each analytical method, where applicable. TM Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). TM MS/MSD/LCS data results are provided for each analytical method. TM MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). 4.0 ANALYTE LISTS/METHODS TM The proper number of constituents are present for each analyte list as identified above (including detects where applicable). TM Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING TM All analytical reporting associated with the event was performed by the contracted lab. TM Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been ‘flagged’ with a ‘B’ where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 10X 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. • Field Blank, Copper @ 2.45 ug/L (J) – Add B Flag: SW5 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 3 of 3 TM It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. TM The report provides the reporting limit for each constituent. TM The results were reported at or below their proper reporting limits (e.g., NC Solid Waste Section Approved QLs). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. TM No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Groundwater Protection Standards (GWPS) in wells or field/equipment/trip blanks or Surface Water Standards for surface points. Copper (Acute = 3.6 ug/L, Chronic = 2.7 ug/L) o SW4 @ 13.0 ug/L Lead (Acute = 14 ug/L, Chronic = 0.54 ug/L) o SW4 @ 11.4 ug/L Zinc (Acute, Chronic = 36 ug/L) o SW4 @ 186 ug/L TM No inorganic or organic constituents were detected in a well or surface water point at quantified concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). TM Other report issues/Communications with laboratory/etc.: ENCO Cary WORK ORDER CA06059 Waste Industries - Sampson Co. (WA026) Sampson Co.-Active- Leachate 073-9603717.100Project: Project Number: Client: Printed: 6/2/2017 10:48:38AM Lab Project Mgr:Stephanie Franz PO #:2017: Sample Receipt Conditions Report To: Waste Industries - Sampson Co. (WA026) Rachel Kirkman 5B Oak Branch Drive Greensboro, NC 27407 Phone: (910) 525-4132 Fax: Invoice To: Waste Industries - Sampson Co. (WA026) Bryan Wuester 7434 Roseboro Highway Roseboro, NC 28382 Phone :(910) 525-4132 Fax: 11-May-17 11:51 11-May-17 08:30 Date Logged In: Date Received:John C King John C KingLogged In By: Received By: Work Order Comments: C-786 received at 2.2°C COC/Labels AgreeProper Containers ReceivedContainers Properly PreservedContainers Intact Y Y Y Y Custody Seals Intact Volatile Containers Preserved Volatile Containers Headspace Free Aqueous Samples Checked for Residual Cl All Samples in PreLog Received Y Y Y N Y Received On Ice Y Temperature Corrected Y Page 1 of 1Reviewed By Date GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: Sampson County Active Landfill – Leachate Project Reference Number: 0739-603717.100 Sampling Event Date: May 10, 2017 Review Date: June 6, 2017 Initials: TM Report #: CA06059, CA0605 QA/QC: Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain-of-custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents: • Region III Modifications to Functional Guidelines for Organic Data Review Multi-Media, Multi- Concentration, September 1994; • Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and • Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility/C & D List NC Appendix I NC Appendix I + Detects NC Appendix II X NC Subtitle D Leachate List Other: 1.0 CHAIN OF CUSTODY (COC) REVIEW TM COC was properly signed by all parties. TM Correct project name and number are on the form. TM Sample receipt condition at laboratory was acceptable. TM Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES TM Holding times for extraction and/or analysis were met for each analytical method (see below for reference). GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 3 Review Criteria Method Analytes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW TM Laboratory analyzed at least one internal blank for each method, where applicable. TM Laboratory blank is interference-free. TM Surrogate recoveries are provided for each analytical method, where applicable. TM Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). TM MS/MSD/LCS data results are provided for each analytical method. TM MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). • The spike recoveries of 1,1-dichloroethene and chlorobenzene were outside of control limits, and precision between duplicate spikes of toluene exceeded acceptance criteria. The QC batch was approved based on acceptable recovery of these analytes. • The spike recoveries of nitrate/nitrite (NOx) and nitrite were outside of control limits for the MS samples. The QC batches were approved based on acceptable recovery of these analytes. 4.0 ANALYTE LISTS/METHODS TM The proper number of constituents are present for each analyte list as identified above (including detects where applicable). TM Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING TM All analytical reporting associated with the event was performed by the contracted lab. TM Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been ‘flagged’ with a ‘B’ where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 10X 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. • Field Blank, Copper @ 2.45 ug/L (J) GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 3 of 3 TM It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. Leachate (L-1) VOC’s x100, Antimony, Selenium, and Thallium x10, COD x20, Phosphorous x4, Sulfate as SO4 x50 TM The report provides the reporting limit for each constituent. TM The results were reported at or below their proper reporting limits (e.g., NC Solid Waste Section Approved QLs). 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. • Due to high levels of non-target analytes, sample L-1 was processed at a dilution for Sulfate analysis, resulting in elevated reporting limits. MRL = 5000 N/A No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Groundwater Protection Standards in field/equipment/trip blanks or Surface Water Standards in surface points. TM No quantifiable inorganic or organic constituents were detected in a well or surface water point at concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). TM Other report issues/Communications with laboratory/etc.: Page 1 of 14 Page 2 of 14 Page 3 of 14 Page 4 of 14 Page 5 of 14 Page 6 of 14 Page 7 of 14 Page 8 of 14 Page 9 of 14 Page 10 of 14 Page 11 of 14 Page 12 of 14 Page 13 of 14 Page 14 of 14 Page 1 of 1 GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 3 Project Name: Sampson County Active MSW Landfill - Resample Project Reference Number: 073-9603717.100 Sampling Event Date: June 23, 2017 Review Date: June 5, 2017 Initials: MG Report #: CA09419 QA/QC: 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: Copper, Lead, Zinc, Toluene 1.0 CHAIN OF CUSTODY (COC) REVIEW MG COC was properly signed by all parties. MG Correct project name and number are on the form. MG Sample receipt condition at laboratory was acceptable. MG Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES MG Holding times for extraction and/or analysis were met for each analytical method (see below for reference). GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 4 Review Criteria Method Analytes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW MG Laboratory analyzed at least one internal blank for each method, where applicable. MG Laboratory blank is interference-free. MG Surrogate recoveries are provided for each analytical method, where applicable. MG Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). MG MS/MSD/LCS data results are provided for each analytical method. MG 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 MG The proper number of constituents are present for each analyte list as identified above (including detects where applicable). MG Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING MG All analytical reporting associated with the event was performed by the contracted lab. MG 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 10X 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. MG 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. TM The report provides the reporting limit for each constituent. GOLDER ASSOCIATES NC, INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 3 of 4 MG The results were reported at or below their proper reporting limits (e.g., NC Solid Waste Section Approved QLs). 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. MG No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or Groundwater Protection Standards (GWPS) in wells or field/equipment/trip blanks or Surface Water Standards for surface points. MG No inorganic or organic constituents were detected in a well or surface water point at quantified concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). MG Other report issues/Communications with laboratory/etc.: • All samples received under this work order arrived in acceptable conditions. The samples were not checked for residual chlorine, as it is not required. Sample MW-4N was not submitted for analysis. Golder Associates NC, Inc. 5B Oak Branch Drive Greensboro, NC 27407 USA (336) 852-4903 - Phone (336) 852-4904 - Fax