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Home My WebLink About4116_Guilford_WI_GFL_HighPoint_CDLF_Jan23GW_FID1799019_20230426ENR USE ONLY: ❑Pa er Report Electranic Data - Email CD data loaded: Yes / No Doc/Event #: NC DENR Environmental Monitoring Division of Waste Management - Solid Waste Reaortina Form Notice: This form and any information attached to It are "Public Records" as defined in NC General Statute 132-1_ As such, these documents are available for inspection and examination by any person upon request (NC General Statute 132-6). Instructions: Prepare one form for each individually monitored unit. Please type or print legibly. • Attach a notification table with values that attain or exceed NC 2L groundwater stardards or NC 28 Surface water standards. The notification must include a preliminary analysis of the cause and significance of each value. (e.g. naturally Occurring, off -site source, pre-existing condition, etc_)_ • Attach a notification table of any groundwater or surface water values that equal or exceed the reporting limits. • Attach a notification table Of any methane gas values that attain or exceed exp}olive gas levels. This includes any structures on or nearby the facility (NCAC 138 .1629 Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCDENR-DWM, Solid Waste Section, 1646 Mail Service Center, Raleigh, INC 27699-1646. Solid Waste Monitoring Data Submittal Information _ Name of entity submitting data (laboratory, consultant, facility owner): WSP USA Inc. on behalf of WI High Point Landfill, LLC Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address: Name: George Wegmann. PG Phone, 336-857.-49a3 E-mall: george,wegmann@wsp.cam Facility name; Facllity Address, High Point C&D Landfill 5830 Riverdale Drive, Jamestown, NC 27282 NO Landfill Rule; Actual sampling dates (e.g,, Facility Permit # (.0500 or 1600) October 20-24, 2006) 41-16 .0500 January 23.25. 2023 Environmental Status: (Check all that apply) ❑ Initial/Background Monitoring ❑ Detection Monitoring ❑X Assessment Monitoring © Corrective Action of data submitted: (Check al I that apply) Groundwater monitoring data from monitoring wells ❑ Groundwater monitoring data from prlvate water supply wails Leachate monitoring data Surface water monitoring data ❑ Methane gas monitoring data Corrective 80tion data (specify) Other(specify) Notification attached? No. No groundwater or surface water standards were exceeded, }( Yes, a notification of values exceeding a groundwater or surface water standard is attached. It Includes a list of groundwater and surface water monitoring points, dates, analytical values, NC 2L groundwater standard, NC 2B surface water standard or NC Solid Waste GWf S and preliminary analysis of the cause and significance of any concentration. Yes, a notification of values exceeding an explosive methane gas limit is attached. It Includes the methane monitoring points, dates, sample values and explosive methane gas limits. Certification To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct. Furthermore, I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards, I am aware that there are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment. George Wegmann, PG Sr. Lead Consultant 336-652-4903 Facility pre5entativeName (Pf+nt) Title (Area Code) Telephone Number 4/2612023 Affix NC: Licensed/ Profess'Ipnal Geologist Seal Slcjnatu Date .+ � •0i��A ii� �•�� ••� `G- aj Ili S~•/ WSP USA Inc., 58 Oak Branch Drive. Greensboro, NC 27407 .�0 Facility Representative Address tSEAL P NC x G) 2850 f G: c-557 2! NC PE Firm License Number (if applicable effective May 1, 2009) y 0 0r� �* Revised 612009 1•y1 "�.*' 0 46-I GF_� GREEN FOR L FE e n v i r o n m e n t a l April 26, 2023 Ms. Jaclynne Drummond, Hydrogeologist Department of Environmental Quality, Division of Waste Management, Solid Waste Section 2090 US Highway 70 Swannanoa, North Carolina 28778 jaclynne.drummond@ncdenr.gov RE: FIRST SEMI-ANNUAL 2023 WATER QUALITY MONITORING REPORT HIGH POINT CONSTRUCTION AND DEMOLITION LANDFILL, PERMIT NO. 41-16 Dear Ms. Drummond, WI High Point Landfill, LLC, is submitting the enclosed Water Quality Monitoring Report, which documents the results of the first semi-annual 2023 compliance monitoring event at the above - referenced facility. If you have any questions, please contact me at (919) 201-3033. Sincerely, WI High Point Landfill, LLC John Pfleger Regional Environmental Compliance Manager Enclosure C: George Wegmann, PG, WSP USA Inc., 5B Oak Branch Drive, Greensboro, North Carolina, 27407, 336-852-4903, george.wegmann@wsp.com Travis Hitchcock, 3301 Benson Drive, Raleigh, North Carolina, 27609. (travis.hitch cock@gflenv. com), (letter only). Bryan Wuester, Regional Landfill Manager, 7434 Roseboro Highway, Roseboro, Sampson County, North Carolina 28382, Bryan.Wuester@gflenv.com Seth Heath, General Manager, 5830 Riverdale Drive, Jamestown, North Carolina 27282, seth.heath@gflenv.com, 336-886-3560 1236 Elon Place High Point NC, 27263 Tel.: 336-668-3712 1 Fax: 336-482-3061 1 gflenv.com REPORT FIRST SEMI-ANNUAL 2023 WATER QUALITY MONITORING REPORT High Point Construction & Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Submitted to: WI High Point Landfill, LLC 5830 Riverdale Drive Jamestown, NC 27282 Submitted by: WSP USA Inc. 5B Oak Branch Drive, Greensboro, North Carolina, USA 27407 +1 336 852 4903 April 2023 Distribution List 31405795.004 Seth Heath, General Manager, 5830 Riverdale Drive, Jamestown, NC 27282, seth.heath@gflenv.com, 336- 886-3560 John Pfleger, Regional Environmental Compliance Manager, GFL Environmental Inc., 3301 Benson Drive, Suite 601, Raleigh, North Carolina 27609, john.pfleger@gflenv.com (electronic copy) Bryan Wuester, Regional Landfill Manager, 3301 Benson Drive, Suite 601, Raleigh, NC 27609, bryan.wuester@gflenv.com (electronic copy) Travis Hitchcock, Region Vice President, 3301 Benson Drive, Suite 601, Raleigh, NC, 27609, travis.hitchcock@gflenv.com (electronic copy) Jaclynne Drummond, Hydrogeologist, North Carolina Department of Environmental Quality, Division of Waste Management - Solid Waste Section, 2090 US Highway 70, Swannanoa, NC 28778, jaclynne.drummond@ncdenr.gov, 828-296-4706 (electronic copy) 1%sp April 2023 31405795.004 Executive Summary WSP USA Inc., formerly Golder Associates NC, Inc. (WSP), is submitting the enclosed Water Quality Monitoring Report, which documents the results of the January 23 - 25, 2023, compliance monitoring event at the High Point Construction and Demolition (C&D) Landfill. Two North Carolina (NC) Appendix I inorganic constituents (barium and cobalt) were detected at quantifiable concentrations above their applicable groundwater standards during the January 2023 event in samples from one or more downgradient wells. As described below, additional background data are being collected to further evaluate exceedances of Appendix I metals. Cobalt and vanadium were also detected at one or more wells at estimated concentrations below the practical quantitation limit (PQLs) but above the NC 2L Groundwater Standard (NC 2L) during this event. As the concentrations are estimated (i.e., non -quantifiable) concentrations below the method reporting limits, per the 15A NCAC 02L .0202 (b)(1), no regulatory actions should be taken for estimated values below the reporting limits (a.k.a. PQLs) that are above groundwater standards Indicator parameters iron, manganese, and total dissolved solids (TDS) were detected at quantifiable concentrations above their respective NC 2L Standards in samples from one or more downgradient wells during this event, as they have been during previous events. As presented in previous reports and alternate source demonstrations (ASDs), the inorganic concentrations reported in the groundwater samples are generally within natural background concentrations. Piezometer P-3, which is located upgradient of the waste unit, was sampled during the January 2023 event to collect additional inorganic constituent data to further evaluate concentrations of inorganic constituents recently detected in samples from downgradient wells. This was the eighth of ten planned background sampling events for this piezometer. One NC Appendix I volatile organic compounds (VOC), benzene, was detected at a quantifiable concentration above the NC 2L in samples from one or more downgradient wells during the January 2023 event, as it has been previously. Vinyl chloride was detected at an estimated concentration above the NC 2L in the sample from MW-8, as it has been previously. Additionally, 1,4-dioxane was detected at quantifiable concentrations above the NC 2L in samples from one or more downgradient wells during the event. 1,4-dioxane was analyzed per the May 30, 2018, NC DEQ memorandum and is not part of the facility permit required testing. Generally, concentrations of VOCs are consistent with historical data. No other NC Appendix I metals or VOCs were detected at quantifiable concentrations above applicable groundwater standards from downgradient monitoring wells during this event. Cobalt was detected at a quantifiable concentration above the applicable surface water standard at downgradient surface water point SW-5 during this event, as it has been previously. Based on published stream sediment metals data for Guilford County, NC, the cobalt concentration in the sample from SW-5 is within the range of historical concentrations for this location and are evaluated further in this report. In the absence of any other indicators, no further action is recommended at this time. 1,4-dioxane was detected at quantifiable concentrations above the Human Health Standard in samples from downstream monitoring locations SW-2, SW-4, SW-5, and SW-6 during the event. As previously discussed, no further action is warranted for these dioxane exceedances. No other NC Appendix I metals or VOCs were detected in at 1%sp April 2023 31405795.004 quantifiable concentrations above applicable surface water standards in samples from downstream surface water monitoring points during this event. Due to the relatively low horizontal groundwater flow rates for the facility, the High Point C&D Landfill continues to evaluate the effects of the soil cap and landfill gas vents, which were installed in 2017, on groundwater quality along the western waste boundary at MW-2 and MW-6. Nested well pair MW-4S/D are located near the western facility boundary due southwest of the C&D landfill. An upward component of groundwater flow is measured at MW-4S/D (i.e., the unnamed tributary is a receiving stream and benzene concentrations detected at MW-2, MW-6, MW-8, and AMW-2 are not likely to extend off site). Based on these results, the facility will continue groundwater monitoring in accordance with the requirements of the Assessment Monitoring Program as outlined in Title 15A NCAC 13B .0545, the Work Plan, and Addenda. The next semi-annual monitoring event is tentatively scheduled for July 2023. I%Sp April 2023 31405795.004 Table of Contents 1.0 INTRODUCTION.........................................................................................................................................1 1.1 Site Description and Background.....................................................................................................1 1.2 Compliance Monitoring History........................................................................................................1 1.3 Hydrogeologic Setting......................................................................................................................3 2.0 FIELD PROGRAM, MONITORING RESULTS AND DISCUSSION...........................................................3 2.1 Visual inspection Program...............................................................................................................3 2.2 Well Network and Groundwater Elevation Measurements..............................................................4 2.3 January 2023 Groundwater and Surface Water Monitoring Event..................................................4 2.4 Laboratory Analysis Program...........................................................................................................5 3.0 LABORATORY AND FIELD QA/QC..........................................................................................................5 4.0 DATA EVALUTION.....................................................................................................................................5 4.1 North Carolina Groundwater and surface Water Quality Standard Comparisons ...........................5 5.0 CONCLUSIONS..........................................................................................................................................7 6.0 REFERENCES............................................................................................................................................7 I IFAl14=F' Table 1 Summary of Historical Groundwater Elevation Data in Monitoring Wells Table 2 Summary of Estimated Horizontal Flow Velocities Table 3 Summary of Well Construction Information Table 4 Summary of Detected Constituents in Groundwater Table 5 Summary of Field Parameters in Groundwater Table 6 Summary of Detected Constituents in Pore Water Samples Table 7 Summary of Field Parameters in Pore Water Samples Table 8 Summary of Detected Constituents in Surface Water Table 9 Summary of Field Parameters in Surface Water FIGURES Figure 1 Groundwater Contour Map, January 23, 2023 APPENDICES Appendix A Groundwater and Surface Water Sampling Logs Appendix B Groundwater and Surface Water Certificate -Of -Analysis, Chain -Of Custodies, and Laboratory Data Review Appendix C USGS National Geochemical Survey Database Summary %%N J ) iv April 2023 31405795.004 1.0 INTRODUCTION This report summarizes the monitoring results from the January 23 — 25, 2023 semi-annual compliance monitoring event at the High Point Construction & Demolition (C&D) Landfill (facility) in Guilford County, North Carolina (NC) in accordance with Title 15A of the North Carolina Administrative Code (NCAC) Subchapter 13B.0545. The active C&D Landfill is owned and operated under Permit No. 41-16 issued by the NC Department of Environmental Quality (DEQ). 1.1 Site Description and Background The location of the facility is shown on the inlay on Figure 1. As presented, High Point C&D Landfill is located along Riverdale Road within the city limits of Jamestown in Guilford County, NC. The facility consists of approximately 154 acres, of which, approximately 17.2 acres is currently permitted as the Phase 1 and Phase 2 waste units. There are three small unnamed streams that traverse the site and flow into an unnamed tributary of Richland Creek, which forms the southern property boundary as shown on Figure 1. The first unnamed tributary is a southwest trending stream that forms the north-western property boundary. The second tributary is a southwest trending drainage in the center of the property and lies just east of the Phase 2 waste unit. The third tributary is a southwest trending drainage in the eastern portion of the site. Three stormwater basins are located at the northwest, southwest, and southern portions of the facility. Topographic surface elevations at the facility range from approximately 700 to 820 feet above mean sea level. The western portion of the site mainly consisted of trees and heavy brush before Phase 1 of the C&D landfill was constructed. Now, most of that area consists of landfill operations. The eastern portion of the site has historically been used for agricultural purposes. A reclamation facility is located at the northernmost part of the site. A large portion of the surrounding properties are agricultural, sparse residential, or owned by the City of High Point for operations associated with Kersey Valley Landfill. An unpermitted landfill was documented to exist approximately 2,200 feet west of the High Point C&D Landfill (Babb & Associates, 2020). 1.2 Compliance Monitoring History Groundwater monitoring at the facility was initiated in October 2003 after approval of the Groundwater Monitoring Plan by NC DEQ. Currently the facility's monitoring network is comprised of eight compliance monitoring wells (MW-1, MW-2, MW 3, MW-4S, MW-5, MW-6, MW-7S, and MW-8) and two assessment monitoring wells (AMW-1, and AMW-2) that monitor the uppermost aquifer beneath the facility. Monitoring wells MW-7S and MW-8 were installed in July 2006 to monitor the Phase 2 expansion at the facility. Two assessment monitoring wells, AMW-1 and AMW-2 were installed in December 2016. In addition to the groundwater monitoring points, the facility's monitoring network includes six surface water sampling points, SW-1 and SW-3, which are upstream monitoring points, and SW-2, SW-4, SW-5, and SW-6, which are downstream monitoring points. Monitoring points SW-5 and SW-6 were added in the May 2019 revision of the Water Quality Monitoring Plan. These points are sampled in conjunction with the groundwater monitoring wells in accordance with the facility's permit. Vinyl chloride and benzene were detected in the sample from downgradient monitoring well MW-2 at concentrations above their respective reporting limits and NC 2L Groundwater Standards (NC 2L) during the July 2014 sampling event. On February 3, 2015, an Alternate Source Demonstration (ASD) was submitted in response to this detection that provided evidence that an unidentified source other than the waste unit is likely responsible for the volatile organic compounds (VOCs) detected in the samples from MW-2. On March 2, April 2023 31405795.004 2015, NC DEQ issued a response letter that allowed an additional six months to assess potential sources of VOCs. Benzene was detected in the sample from MW-2 at a concentration above the Solid Waste Section Limit (SWSL) and NC 2L during the August 2015 sampling event and the facility transitioned to an Assessment Monitoring Program. An Assessment Monitoring Notification and Work Plan (Work Plan) was submitted to the NC DEQ on December 7, 2015 and was approved on January 28, 2016. The approved Work Plan stated that samples from groundwater monitoring wells MW-1 and MW-2 would be analyzed for the NC Appendix II list of constituents during the first semi-annual water quality monitoring event of 2016 and during subsequent events, MW-1 and MW-2 would be analyzed for NC Appendix I list of constituents plus detected NC Appendix II constituents. No additional NC Appendix II constituents were detected in the samples from MW-1 and MW- 2 during the February 2016 event and therefore, future events were analyzed for the NC Appendix I list of constituents. Benzene was detected in the sample from MW-6 at a concentration above the SWSL and NC 2L during the July 2016 sampling event. Based on the July 2016 monitoring results, an Assessment Monitoring Notification and Work Plan Addendum (Addendum) was submitted to the NC DEQ on October 21, 2016 and was approved on October 31, 2016. The approved Addendum stated that assessment monitoring wells, AMW-1 and AMW-2, would be installed downgradient of MW-2 and MW-6, respectively. The Addendum also stated that samples from groundwater monitoring wells MW-6, AMW 1, and AMW-2 would be analyzed for the NC Appendix II list of constituents during the first semi-annual water quality monitoring event of 2017 and during subsequent events MW-6, AMW-1, and AMW-2 would be analyzed for NC Appendix I list of constituents plus detected NC Appendix II constituents. Assessment monitoring wells AMW-1 and AMW-2 were installed in December 2016 in accordance with the Addendum and sampled for the first time during the January 2017 event. In response to exceedances of groundwater standards of inorganic constituents, WSP submitted an Assessment Monitoring Work Plan Addendum 2 (Addendum 2) on November 8, 2019, which proposed sampling of existing piezometer P-3 for inorganic constituents over five years to establish background concentrations. The Addendum 2 was approved by the NC DEQ on November 14, 2019. Benzene was detected in the samples from MW-8, AMW-1, and AMW-2 at quantifiable concentrations above the NC 2L during the January 2021 sampling event. Based on the January 2021 monitoring results, an Assessment Monitoring Work Plan Addendum 3 (Addendum 3) was submitted to the NC DEQ on March 26, 2021 and was approved on March 30, 2021. Addendum 3 stated that MW-8 would be sampled and analyzed for the NC Appendix II list of constituents during the second semi-annual water quality monitoring event of 2021 and that pore water samples (PWS-4, PWS-5, and PWS-6) would be collected annually, downgradient of wells MW-8, AMW-1, and AMW-2, respectively, and analyzed for NC Appendix I VOCs. The pore water sampling locations are shown on Figure 1. As part of ongoing remedial efforts, High Point C&D Landfill completed final soil cap construction for Phases 1 and 2 in July 2017. Additionally, 14 in waste passive landfill gas vents were installed, some of which are located in proximity to areas of known VOC groundwater contamination at groundwater monitoring wells MW- 2, MW-6, and MW-8. Based on average horizontal groundwater flow rates for the facility that are relatively low, it could take more than 25 years for groundwater located below the landfill gas vents to travel to the impacted groundwater monitoring wells. High Point C&D Landfill is continuing to evaluate the effects of the recently installed soil cap and landfill gas vents on groundwater quality along the western waste boundary at MW-2, MW-6, and MW-8 prior to evaluating any additional remedies. %A', p April 2023 31405795.004 1.3 Hydrogeologic Setting Geologically, the facility is located within the Carolina Slate Belt of the Piedmont Physiographic Province of North Carolina (NCGS, 1985). Generally, the Carolina Slate Belt consists of Late Proterozoic to Cambrian volcanic and greenschist-facies metasedimentary rocks intruded by plutonic suites (Butler and Secor, 1991). The site geology is characterized by a regional -scale felsic intrusive complex, which consists mainly of white to gray, fine- to coarse -grained, massive to foliated metamorphosed granitic rock. The region is characterized by regional and small-scale Mesozoic diabase dikes. The uppermost groundwater beneath the facility is present in a shallow, unconfined aquifer comprised of saprolite, partially weathered rock (PWR), and granitic bedrock. Groundwater occurs at depths of approximately 25 feet below grade along the northern upgradient side of the site, and at a depth of less than 10 feet below grade along the perimeter downgradient boundary. Depth to water measurements, obtained during the January 2023 monitoring event and summarized in Table 1, were used to prepare a groundwater surface contour map presented on Figure 1. Surface water and groundwater at the site generally flows south to southwest towards a tributary of Richland Creek. Richland Creek is approximately 1300 feet south of the site and flows to the Deep River, which is approximately 0.5 miles from the site. Groundwater beneath the site flows in three distinguishable and vertically interconnected hydrogeologic units; saprolite, PWR, and bedrock. The groundwater surface contour map and interpreted flow directions are consistent with previously submitted interpretations for this facility. Based on the January 23, 2023, groundwater contour map, the average 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 0.042 feet per foot (Table 2). Groundwater velocities were calculated using a hydraulic conductivity of 1.37E-05, which is the geometric mean of the hydraulic conductivities for each of the hydrogeologic units present at the facility. The estimated effective porosity of the shallow aquifer is expected to range from 0.20 (saprolite) to 0.09 (fractured rock). The effective porosity of the fractured rock was used in calculations to provide a conservative estimate of groundwater flow. Using the above values, the estimated rate of groundwater flow for the uppermost aquifer beneath the facility was calculated using the following modified Darcy equation: Vgw = Ki/ne where Vgw = average linear velocity (feet/year), K = hydraulic conductivity (feet/year), i = horizontal hydraulic gradient, and ne = effective porosity. The average estimated linear groundwater flow velocity under the waste management unit is approximately 6.6 feet/year, which is generally consistent with previous estimates (Table 2). The range of groundwater flow is expected to vary depending on the hydrogeologic unit in which it occurs. 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 for the January 2023 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 High Point C&D landfill by the sampling personnel. The program includes physical indicators such as physical examination of any stresses in biological communities, visible signs of leachate migration (i.e., leachate %A',I) April 2023 31405795.004 seeps, and any other change to the environment due to the landfill) and documenting the condition of the groundwater monitoring wells. During this compliance monitoring event, no physical indicators of a potential release were observed in the vicinity of the landfill by the sampling personnel. 2.2 Well Network and Groundwater Elevation Measurements The current approved network of groundwater monitoring wells at the facility consists of eight compliance monitoring wells and two assessment monitoring wells. Monitoring well construction information is summarized on Table 3 and the well locations are shown on Figure 1. The well locations were selected to yield groundwater samples representative of the conditions in the uppermost aquifer underlying the facility, and to monitor for potential releases from the landfill unit. Two upstream (SW-1 and SW-3) and four downstream (SW-2, SW-4, SW-3, and SW-6) surface water monitoring points are also monitored and are shown on Figure 1 Monitoring well MW-1 is the facility's background well and is located hydraulically upgradient of the waste disposal area. Monitoring wells MW-2, MW-3, MW-4S, MW-5, MW-6, MW-7S, MW-8, AMW-1, and AMW-2, are located downgradient of the waste disposal area and represent the facility's downgradient wells. Piezometer P-3 is located upgradient and is currently being sampled during semi-annual water quality monitoring events to establish inorganic background concentrations. Depth -to -water measurements were 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 along with historical water level data. As presented, the data 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 feet (plus or minus). As expected, the range in fluctuation appears to be greater in the upgradient well MW-1, as this well is located in a groundwater recharge area. The range in fluctuation in downgradient compliance wells, which are located near groundwater discharge areas, is much less, presumably due to the stabilizing effect of the hydraulic discharge boundary. 2.3 January 2023 Groundwater and Surface Water Monitoring Event Personnel from WSP visited the facility on January 23 -25, 2023 to purge and sample monitoring wells MW-1, MW-2, MW-3, MW-4S, MW-5, MW-6, MW-7S, MW-8, AMW-1, AMW-2, piezometer P-3, and surface water monitoring points SW-1, SW-2, SW-3, SW-4, SW-5, and SW-6. Depth -to -water measurements were obtained from the network monitoring wells and additional wells (MW-4D and MW-7D) to the nearest 0.01 foot using an electronic water level indicator prior to purging the wells. Compliance and assessment monitoring wells were purged and sampled using low -flow sampling techniques from dedicated bladder pumps. Piezometer P-3 was purged and sampled using low -flow sampling techniques from a peristaltic pump. Measurements of temperature, pH, specific conductivity, dissolved oxygen (DO), oxidation-reduction potential (ORP), and turbidity were recorded on approximately 3- to 5-minute intervals during the purge, depending on the purge rate. In general, the purge rate was matched to the yield of the monitoring well, as determined by continuously monitoring the depth -to -water, not allowing the purge rate to exceed 500 milliliters per minute. Purging was continued until stabilization was indicated by the field parameters. Prior to sampling, the laboratory -supplied sample containers were prepared. Each sample container was labelled 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 April 2023 31405795.004 directly from the bladder pump discharge lines into the labelled, laboratory -supplied, pre -preserved sample containers after purging was completed based on stabilization of field parameters. The surface water samples were collected directly from the stream flow, 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, DO, ORP, and turbidity were recorded during the collection of the surface water samples. 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 location, sampling method, field observations, and field measurements. 2.4 Laboratory Analysis Program The January 23 -25, 2023 groundwater and surface water samples were delivered via courier to Eurofins Analytical (Eurofins) of Cary, NC under chain -of -custody control for analysis. As presented, the January 2023 groundwater samples from MW-1, MW-2, MW-3, MW 4S, MW-5, MW-6, MW-7S, MW-8, AMW-1, and AMW-2 were analyzed for the NC Appendix I list of constituents plus the C&D indicator parameters specific to 15A NCAC 13B .544(a)(1)(D), tetrahydrofuran, and 1,4-dioxane. P-3 was analyzed for NC Appendix I metals plus mercury, manganese, and iron. The surface water samples at the facility were analyzed for the NC Appendix I list of constituents plus tetrahydrofuran and 1,4 dioxane. The samples were received at the laboratory on January 24 and 25, 2023 in good condition and properly preserved. 3.0 LABORATORY AND FIELD QA/QC A field blank was collected by WSP personnel as part of the January 2023 sampling event. Eurofins analyzed the field blank for the NC Appendix I list of constituents plus iron; manganese; mercury; 1,4-dioxane; and tetrahydrofuran. In addition to the field blank, a laboratory -prepared trip blank accompanied the volatile sample containers to and from the laboratory and was analyzed for NC Appendix I VOCs plus 1,4-dioxane and tetrahydrofuran. Eurofins analyzed the laboratory blanks for the same parameters analyzed for the groundwater samples. A review of the laboratory data was performed by WSP personnel and is included in Appendix B. Based on data review performed by WSP, acetone was detected at an estimated concentration in the field blank, chloroform and methylene chloride were detected at estimated concentrations in the trip blank, and antimony was detected at an estimated concentration in the laboratory method blank. The following concentrations are considered blank -qualified: Acetone at MW-2, MW-6, MW-8, AMW-1, AMW-2, SW-3, SW-5, and SW-6; methylene chloride at MW-7S and SW-3; and antimony at MW-1, MW-2, P-3, MW-6, and each surface water monitoring point. 4.0 DATA EVALUTION The Results of the data evaluations are presented in the following sections. 4.1 North Carolina Groundwater and surface Water Quality Standard Comparisons Analytical results and field parameters for the January 2023 groundwater samples are summarized in Tables 4 and 5 along with available historical data. As presented in Table 4, two NC Appendix I inorganic constituents (barium and cobalt) were detected at quantifiable concentrations above their applicable groundwater standards during the January 2023 event in samples from one or more downgradient wells. As described below, additional background data are being collected to further evaluate exceedances of Appendix I metals. Cobalt and vanadium were also detected at one or more wells at estimated concentrations below the practical quantitation limit (PQLs) but above the NC 2L Standard during this event. As the concentrations are estimated (i.e., non -quantifiable) concentrations below the method reporting limits, per the 15A NCAC 02L April 2023 31405795.004 .0202 (b)(1), no regulatory actions should be taken for estimated values below the reporting limits (a.k.a. PQLs) that are above groundwater standards. Indicator parameters iron, manganese, and total dissolved solids (TDS) were detected at quantifiable concentrations above their respective NC 2L Standards in samples from one or more downgradient wells during this event, as they have been previously. As presented in previous reports and alternate source demonstrations (ASDs), the inorganic concentrations reported in the groundwater samples are generally within natural background concentrations. One NC Appendix I VOC, benzene, was detected at a quantifiable concentration above the NC 2L Standard in samples from one or more downgradient wells during the January 2023 event, as it has been previously. Vinyl chloride was detected at an estimated concentration above the NC 2L standard in the sample from MW-8, as it has been previously. Additionally, 1,4-dioxane was detected at quantifiable concentrations above the NC 2L Standard in samples from one or more downgradient wells during the event above the NC 2L Standard. 1,4-dioxane was analyzed per the May 30, 2018, NC DEQ memorandum and is not part of the facility permit required testing. Generally, concentrations of VOCs are consistent with historical data. No other NC Appendix I metals or VOCs were detected at quantifiable concentrations above applicable groundwater standards from downgradient monitoring wells during this event. As stated in Section 1.2, a final soil cap was completed for Phases 1 and 2 and 14 gas vents were installed into the landfill in July 2017. Due to the relatively low flow rates downgradient of the landfill, the effects of these improvements on water quality are still being evaluated. Nested well pair MW-4S and MW-4D are located near the western facility boundary southwest of the C&D landfill. Based on the data presented in Table 2, an upward component of groundwater flow is measured at MW-4S/D. Based on an evaluation of the elevation of an unnamed tributary to Richland Creek adjacent to MW 4S/D and water table elevation in MW-4S, the unnamed tributary is a receiving stream and above standard concentrations of VOCs detected at MW-2, MW-6, MW-8, AMW-1, and AMW-2 are unlikely to extend off site, which is further supported by the pore water sampling results (sampled each fall and shown on Table 6). Analytical results and field parameters for the January 2023 surface water samples are summarized in Tables 8 and 9 along with available historical data. Cobalt was detected at a quantifiable concentration above the applicable surface water standard at downgradient surface water point SW-5 during this event, as it has been previously. Based on published stream sediment metals data for Guilford County, NC, the cobalt concentration in the sample from SW-5 is within the range of historical concentrations for this location as noted below. In the absence of any other indicators, no further action is recommended at this time. 1,4-dioxane was detected at quantifiable concentrations above the Human Health Standard in samples from downstream monitoring locations SW-2, SW-4, SW-5, and SW-6 during the event. As previously discussed, no further action is warranted for these dioxane exceedances. No other NC Appendix I metals or VOCs were detected in at quantifiable concentrations above applicable surface water standards in samples from downstream surface water monitoring points during this event. A literature search of cobalt concentrations in stream sediment for Guilford County, NC was conducted to provide evidence that the source of cobalt in the sample from SW-5 is naturally occurring. The United States Geological Survey (USGS) National Geochemical Survey Database is a collection of stream sediment data from across the United States. This database was used to locate 14 stream sediment samples collected between 1 to 20 miles from the High Point C&D Landfill, which are summarized below. April 2023 31405795.004 These concentrations of cobalt in sediment likely account for the concentrations detected in the sample from SW-5. A summary table of the data used from the National Geochemical Survey Database is provided in Appendix C. Based on the stream sediment metals data presented above, the cobalt concentrations reported in the sample from SW-5 are within natural background concentrations. Therefore, future cobalt results will continue to be monitored, and no further action is warranted at this time. 5.0 CONCLUSIONS During the January 2023 event, WSP sampled piezometer P-3, which is located upgradient of the waste unit, to collect additional inorganic constituent data to further evaluate concentrations of inorganic constituents recently detected in samples from downgradient wells. This was the eighth of ten planned sampling events. As the turbidity in this well was elevated (over 10 NTU) during this event, results will not be used to establish background data for this well but are included within this report. WSP recommends re -developing P-3 prior to the next scheduled sampling event. Due to the relatively low horizontal groundwater flow rates for the facility, the High Point C&D Landfill continues to evaluate the effects of the soil cap and landfill gas vents, which were installed in 2017, on groundwater quality along the western waste boundary at MW-2 and MW-6. Nested well pair MW-4S/D are located near the western facility boundary due southwest of the C&D landfill. An upward component of groundwater flow is measured at MW-4S/D (i.e., the unnamed tributary is a receiving stream and benzene concentrations detected at MW-2, MW-6, MW-8, and AMW-2 are not likely to extend off site). Based on these results, the facility will continue groundwater monitoring in accordance with the requirements of the Assessment Monitoring Program as outlined in Title 15A NCAC 13B .0545, the Work Plan, and Addenda. The next semi-annual monitoring event is tentatively scheduled for July 2023. 6.0 REFERENCES Babb & Associates, P.A., 2020, Notification of Pre -Regulatory Waste Disposal Site; Former Jackson Lake Road Landfill, High Point, Guilford County, North Carolina. December. Butler, J. Robert and Secor, Donald T., Jr., 1991, The Central Piedmont, in Horton, J. W., Jr., and Zullo, V.A., eds., The Geology of the Carolinas: The University of Tennessee Press, p. 59 78. Joyce Engineering, Inc., 2002, Hydrogeologic Report & Groundwater Monitoring Plan; Volume One; Site Application, Section II; MRR of High Point, LLC Construction and Demolition Debris Landfill, High Point, North Carolina. Revised January 2003 and March 2003. NCGS (North Carolina Geologic Survey), 1985. Geologic Map of North Carolina Smith+Gardner, Inc., 2016, Water Quality Monitoring Plan, WI High Point, LLC, Jamestown, North Carolina. Revised May 2019. United States Environmental Protection Agency, November 2003. Guidance for Developing Ecological Soil Screening Levels. United States Geological Survey, National Geochemical Survey Database. https://mrdata.usgs.gov/geochem/ April 2023 31405795.004 Signature Page WSP USA Inc. Travis Martinez, CHMM Environmental Scientist Geology License No, C-557 George C. Wegmann, PG Senior Lead Consultant, Geologist Tables April 2023 31405795.004 TABLE 1 Summary of Historical Groundwater Elevation Data in Monitoring Wells Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Monitoring Wells M W-1 M W-2 M W-3 M W-4S M W-4D M W-5 M W-6 M W -7S M W-7D M W-8 AMW-1 AM W-2 P-3 TOC Elevation 813.17 754.85 755.48 733.76 734.23 747.83 735.23 761.20 763.27 762.60 753.28 730.57 790.06 (ft AMSL) DTW Elevation DTW Elevation DTW Elevation DTW Elevation DTW Elevation DTW Elevation DTW Elevation DTW Elevation DTW Elevation DTW Elevation DTW Elevation DTW Elevation DTW Elevation Date (ft) (ft AMSL) (ft) (ft AMSL) (ft) (ft AMSL) (ft) (ft AMSL) (ft) (ft AMSL) (ft) (ft AMSL) (ft) (ft AMSL) (ft) (ft AMSL) (ft) (ft AMSL) (ft) (ft AMSL) (ft) (ft AMSL) (ft) (ft AMSL) (ft) (ft AMSL) 10/08/03 17.80 795.37 6.42 748.43 16.00 739.48 5.47 728.29 --- --- 7.52 741.04 8.57 726.66 --- --- --- --- --- --- --- --- --- --- --- --- 01 /23/04 18.40 794.77 6.97 747.88 16.58 738.90 6.00 727.76 --- --- 12.95 734.88 10.97 724.26 --- --- --- --- --- --- --- --- --- --- --- --- 07/08/04 19.09 794.08 6.80 748.05 18.71 736.77 6.16 727.60 --- --- 12.39 735.44 10.90 724.33 --- --- --- --- --- --- --- --- --- --- --- --- 01 /25/05 19.88 793.29 6.70 748.15 16.95 738.53 5.85 727.91 --- --- 11.65 736.18 11.00 724.23 --- --- --- --- --- --- --- --- --- --- --- --- 07/06/05 19.19 793.98 8.01 746.84 18.91 736.57 7.65 726.11 --- --- 13.10 734.73 10.97 724.26 --- --- --- --- --- --- --- --- --- --- --- --- 01 /09/06 23.20 789.97 6.10 748.75 18.25 737.23 5.52 728.24 0.10 734.13 11.89 735.94 9.53 725.70 --- --- --- --- --- --- --- --- --- --- --- --- 07/12/06 19.80 793.37 6.05 748.80 18.35 737.13 5.91 727.85 0.10 734.13 12.44 735.39 10.86 724.37 --- --- 32.70 730.57 --- --- --- --- --- --- --- --- 01/16/07 19.26 793.91 6.41 748.44 16.37 739.11 5.35 728.41 0.10 734.13 11.55 736.28 9.01 726.22 30.85 730.35 31.29 731.98 2.40 760.20 --- --- --- --- --- --- 07/02/07 19.32 793.85 9.00 745.85 19.02 736.46 7.93 725.83 0.10 734.13 13.41 734.42 11.10 724.13 30.90 730.30 31.60 731.67 5.74 756.86 --- --- --- --- --- --- 01/29/08 22.68 790.49 7.01 747.84 18.76 736.72 5.88 727.88 0.10 734.13 12.04 735.79 10.10 725.13 32.95 728.25 33.20 730.07 4.57 758.03 --- --- --- --- --- --- 07/17/08 20.51 792.66 10.35 744.50 19.51 735.97 8.91 724.85 0.13 734.10 13.38 734.45 11.02 724.21 32.36 728.84 33.17 730.10 6.58 756.02 --- --- --- --- --- --- 01/15/09 20.09 793.08 6.49 748.36 17.31 738.17 5.16 728.6 0.00 734.23 11.54 736.29 7.88 727.35 31.56 729.64 31.94 731.33 2.02 760.58 --- --- --- --- --- --- 07/16/09 18.96 794.21 8.12 746.73 18.53 736.95 7.55 726.21 0.00 734.23 12.80 735.03 10.08 725.15 31.01 730.19 30.78 732.49 3.55 759.05 --- --- --- --- --- --- 01/04/10 18.06 795.11 6.43 748.42 16.15 739.33 5.25 728.51 0.00 734.23 11.24 736.59 7.78 727.45 30.25 730.95 34.04 729.23 2.58 760.02 --- --- --- --- --- --- 07/01/10 17.43 795.74 8.03 746.82 18.41 737.07 6.90 726.86 0.00 734.23 12.06 735.77 10.02 725.21 30.09 731.11 --- --- 4.40 758.20 --- --- --- --- --- --- 01/13/11 19.57 793.6 7.35 747.50 18.78 736.70 6.41 727.35 0.07 734.16 13.47 734.36 9.79 725.44 32.41 728.79 32.41 730.86 4.21 758.39 --- --- --- --- --- --- 07/21/11 18.25 794.92 7.83 747.02 18.71 736.77 6.95 726.81 0.00 734.23 12.25 735.58 9.21 726.02 31.20 730.00 31.99 731.28 4.39 758.21 --- --- --- --- --- --- 01/16/12 17.97 795.2 6.52 748.33 16.49 738.99 5.23 728.53 0.00 734.23 11.39 736.44 6.76 728.47 30.75 730.45 31.26 732.01 3.19 759.41 --- --- --- --- --- --- 07/09/12 18.02 795.15 8.62 746.23 18.89 736.59 7.60 726.16 0.00 734.23 13.00 734.83 9.25 725.98 30.58 730.62 31.46 731.81 5.36 757.24 --- --- --- --- --- --- 01/14/13 19.72 793.45 7.29 747.56 18.16 737.32 6.06 727.70 0.00 734.23 12.45 735.38 9.01 726.22 31.54 729.66 32.26 731.01 4.50 758.10 --- --- --- --- --- --- 07/09/13 17.16 796.01 7.38 747.47 17.99 737.49 6.24 727.52 0.00 734.23 12.06 735.77 7.24 727.99 29.69 731.51 30.50 732.77 4.30 758.30 --- --- --- --- --- --- 01/30/14 18.94 794.23 7.02 747.83 17.51 737.97 5.62 728.14 0.00 734.23 11.61 736.22 7.26 727.97 30.92 730.28 31.63 731.64 4.16 758.44 --- --- --- --- --- --- 07/08/14 17.69 795.48 8.24 746.61 18.51 736.97 7.68 726.08 0.00 734.23 12.80 735.03 7.96 727.27 30.26 730.94 31.13 732.14 5.53 757.07 --- --- --- --- --- --- 03/03/15 19.16 794.01 6.68 748.17 17.78 737.70 4.88 728.88 0.00 734.23 11.39 736.44 7.45 727.78 31.03 730.17 31.56 731.71 3.73 758.87 --- --- --- --- --- --- 08/12/15 19.13 794.04 8.12 746.73 19.67 735.81 8.43 725.33 -- -- 12.71 735.12 8.51 726.72 31.51 729.69 --- --- 9.54 753.06 --- --- --- --- --- --- 02/17/16 17.08 796.09 6.40 748.45 15.21 740.27 4.84 728.92 0.00 734.23 10.68 737.15 5.19 730.04 28.78 732.42 29.24 734.03 2.79 759.81 --- --- --- --- --- --- 07/14/16 17.66 795.51 7.34 747.51 18.44 737.04 6.87 726.89 -- -- 12.08 735.75 7.11 728.12 29.40 731.80 --- --- 4.98 757.62 --- --- --- --- --- --- 01/11/17 20.41 792.76 7.15 747.70 23.55 731.93 5.86 727.90 0.00 734.23 11.71 736.12 7.15 728.08 30.36 730.84 --- --- 4.09 758.51 5.76 747.52 6.26 724.31 --- --- 07/11/17 18.22 794.95 7.55 747.30 17.98 737.50 6.45 727.31 0.00 734.23 11.45 736.38 6.05 729.18 28.41 732.79 29.53 733.74 4.20 758.40 5.96 747.32 7.37 723.20 --- --- 01/09/18 20.97 792.20 7.40 747.45 18.83 736.65 6.47 727.29 0.00 734.23 13.09 734.74 7.74 727.49 29.39 731.81 30.58 732.69 4.64 757.96 5.92 747.36 7.28 723.29 --- --- 07/26/18 19.20 793.97 8.20 746.65 19.76 735.72 8.63 725.13 0.00 734.23 12.36 735.47 7.10 728.13 29.49 731.71 30.74 732.53 5.71 756.89 6.42 746.86 7.69 722.88 --- --- 01/30/19 16.20 796.97 5.81 749.04 15.42 740.06 4.70 729.06 0.00 734.23 10.08 737.75 5.74 729.49 26.04 735.16 27.24 736.03 2.20 760.40 4.95 748.33 3.98 726.59 --- --- 07/10/19 16.35 796.82 7.18 747.67 17.89 737.59 6.65 727.11 0.00 734.23 11.30 736.53 6.02 729.21 22.30 738.90 28.27 735.00 4.12 758.48 5.77 747.51 7.06 723.51 5.95 784.11 01 /29/20 18.13 795.04 5.36 749.49 15.78 739.70 4.69 729.07 0.10 734.13 10.11 737.72 5.67 729.56 26.74 734.46 28.09 735.18 2.44 760.16 4.80 748.48 3.64 726.93 4.95 785.11 07/07/20 16.55 796.62 7.19 747.66 17.96 737.52 6.45 727.31 0.00 734.23 11.18 736.65 6.44 728.79 26.50 734.70 27.90 735.37 4.20 758.40 5.95 747.33 6.95 723.62 5.34 784.72 01/19/21 16.17 797.00 6.41 748.44 16.22 739.26 5.51 728.25 0.00 734.23 10.14 737.69 6.29 728.94 25.44 735.76 27.15 736.12 2.87 759.73 5.59 747.69 5.13 725.44 4.23 785.83 08/16/21 17.78 795.39 7.20 747.65 18.95 736.53 7.29 726.47 0.00 734.23 11.60 736.23 6.38 728.85 25.83 735.37 27.69 735.58 4.64 757.96 6.03 747.25 7.38 723.19 7.62 782.44 01 /26/22 20.02 793.15 6.16 748.69 18.24 737.24 5.27 728.49 0.00 734.23 10.49 737.34 6.88 728.35 27.00 734.20 28.72 734.55 3.57 759.03 5.45 747.83 4.83 725.74 5.65 784.41 07/05/22 18.91 794.26 7.83 747.02 18.85 736.63 8.04 725.72 0.00 734.23 12.15 735.68 7.38 727.85 25.21 735.99 27.10 736.17 5.17 757.43 6.43 746.85 7.88 722.69 7.84 782.22 01/23/23 18.19 794.98 5.66 t49.19 17.00 738.48 4.85 728.91 0.00 734.23 9.76 738.07 1 5.67 729.56 23.66 737.54 25.55 737.72 1 2.90 759.70 5.20 748.08 3.88 726.69 1 5.49 784.57 MEAN 18.78 794.39 7.17 747.68 18.01 737.47 6.33 727.43 0.02 734.21 11.78 736.07 8.23 727.00 29.22 731.98 30.36 732.91 4.22 758.38 5.71 747.57 6.10 724.47 5.88 784.18 MAXIMUM 23.20 797.00 10.35 749.49 23.55 740.27 8.91 729.07 0.13 734.23 13.47 741.04 11.10 730.04 32.95 738.90 34.04 737.72 9.54 760.58 6.43 748.48 7.88 726.93 7.84 785.83 MINIMUM 16.17 789.97 5.36 744.50 15.21 731.93 4.69 724.85 0.00 734.10 7.52 734.36 5.19 724.13 22.30 728.25 25.55 729.23 2.02 753.06 4.80 746.85 3.64 722.69 4.23 782.22 Notes: 1. TOC = top of casing 2. It AMSL = feet above mean sea level 3. Monitoring well MWA is the facility background well. 4. --- = no data available 5. Each water level for MW-41D was above ground surface, just below the top of casing. 1 of 1 April 2023 TABLE 2 Summary of Estimated Horizontal Flow Velocities Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina 31405795.004 January 2023 Gradient Gradient Gradient Horizontal Effective Hydraulic Calculation Flow Segment Segment Gradient Porosity Conductivity Velocity Segment Direction Length Elevations feet) (ne) (K, cm/sec) (Vgw, feet/year) feet(feet)(i, i W 732 --------760------- 0.0410 0.09 1.37E-05 6.45 i2 SW 1449 --------790-------- 74 0.0345 0.09 1.37E-05 5.43 i 3 1 S 793 --------790------- 75 0.0504 0.09 1.37E-05 7.94 Notes: 1. Horizontal velocities based on the modified Darcy equation Vgw = Ki/ne. 2. The geometric mean of K from individual well aquifer tests was used to calculate the hydraulic conductivity (tests conducted by Golder as part of the Phase 2 investigation not yet submitted). 3. The effective porosity for bedrock was used in velocity calculations. 4. cm/sec = centimeters per second 1 of 1 April 2023 31405795.004 TABLE 3 Summary of Well Construction Information Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Well & Piezometer Number Date Installed Casing Diameter (inches) Coordinates Well Elevations Total Depth Drilled Screened Interval Lithology of Screened Interval Status Ground Surface TOC Northing Easting Depth (ft bgs) Elevation (ft AMSL) Depth ft bgs) p ( g) Elevation ft AMSL ( ) ft AMSL from to from to MW-1 09/29/03 2 802679.07 1727481.97 809.79 813.17 30.0 779.79 15.0 30.0 794.79 779.79 Bedrock Compliance Well MW-2 09/30/03 2 802512.12 1726072.14 752.30 754.85 16.5 735.80 6.5 16.5 745.80 735.80 PWR/Bedrock Compliance Well MW-3 10/02/03 2 802153.76 1725818.69 752.65 755.48 27.0 725.65 12.0 27.0 740.65 725.65 PWR/Bedrock Compliance Well MW-4S 02/20/02 2 801841.41 1725570.04 731.60 733.76 20.0 711.60 5.0 20.0 726.60 711.60 PWR/Bedrock Compliance Well MW-4D 02/19/02 2 801847.04 1725576.62 731.88 734.23 80.0 651.88 60.0 80.0 671.88 651.88 Bedrock Water Levels Only MW-5 02/19/02 2 801517.31 1726103.70 741.16 743.44 20.0 721.16 5.0 20.0 736.16 721.16 Sapro lite/PWR/Bedrock Compliance Well MW-6 12/17/02 2 801625.07 1725754.72 733.53 735.23 15.5 718.03 8.5 15.5 725.03 718.03 PWR/Bedrock Compliance Well MW-7S 07/13/06 2 801358.30 1726660.50 761.20 763.52 45.0 716.20 30.0 45.0 731.20 716.20 PWR Compliance Well MW-7D 07/11/06 2 801341.60 1726657.80 761.24 763.27 70.0 691.24 60.0 70.0 701.24 691.24 Bedrock Water Levels Only MW-8 07/05/06 2 802748.00 1726285.20 760.57 762.60 25.0 735.57 15.0 25.0 745.57 735.57 Bedrock Compliance Well AMW-1 12/05/16 2 802509.49 1726046.32 750.82 753.28 15.0 735.82 5.0 15.0 745.82 735.82 Bedrock Assessment Well AMW-2 12/05/16 2 801580.59 1725717.37 728.19 730.57 15.0 713.19 5.0 15.0 723.19 713.19 Bedrock Assessment Well P-3 02/12/02 2 802083.27 1727807.85 787.62 790.06 25.0 762.62 10.0 25.0 777.62 762.62 Saprolite/PWR Background Piezometer Notes: 1. All elevations are referenced to mean sea level; depths are referenced to ground surface. 2. AMSL = above mean sea level 3. bgs = below ground surface 4. TOC = top of casing 5. PWR = partially weathered rock 6. MW-4S and MW-4D were installed as piezometers P-15S and P-15D, respectively, on February 19-20, 2002. 7. MW-5 was installed as piezometer P-12 on February 19, 2002. 8. MW-6 was installed as piezometer P-18 on December 17, 2002. 9. MW-7S and MW-7D were installed as piezometers P-30S and P-30D, respectively, on July 13 and 11, 2006. 10. MW-8 was installed as piezometer P-23 on July 5, 2006. 10. AMW-1 and AMW-2 were installed as assessment monitoring wells on December 5, 2016. 1 of 1 April 2023 31405795.004 TABLE 4 Summary of Detected Constituents in Groundwater Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Reporting SWS Upgradient Downgradient Parameter Units Sample Date MDL MRL Re ortin Blanks MW-1 P- 3 MW-2 MWJ MW-4S MW-5 MW-6 MW-7S MW-8 AMW-1 AMW-2 Antimony ug/L 01/16/07 -- -- 6 ND -- ND ND ND ND ND ND ND -- -- ND NC 2L = 1 ug/L ug/L 07/02/07 -- -- 6 ND -- ND ND ND ND ND ND ND -- -- ND EPA MCL =6ug/L ug/L 01/30/08 -- -- 6 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 6 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 6 ND -- ND 0.96 J ND ND 0.94 J -- -- -- -- ND ug/L 07/16/09 -- -- 6 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/04/10 -- -- 6 ND -- ND 0.107 J ND ND 0.0910 J 0.206 J ND -- -- ND 07/01/10 -- -- 6 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/13/11 -- -- 6 ND -- ND ND ND ND ND ND ND -- -- ND 07/21/11 -- -- 6 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/16/12 -- -- 6 0.307 J -- 0.620 J ND ND ND ND ND ND -- -- ND 07/01/14/9/12 -- -- 6 0.257 B -- 1.30 B ND ND ND ND ND ND -- -- 0,461 J %ug/L L 013 -- -- 6 ND -- 0.672 J ND ND ND ND ND ND -- -- ND 07/09/13 -- -- 6 0.221 J -- 0.767 J ND ND 0.238 J ND ND ND -- -- ND %ug/L L 01130 4 -- -- 6 0.229 J -- 1.66 J ND ND 0.347 J ND ND ND -- -- ND 07/01 14 -- -- 6 ND -- 1.30 J ND ND ND ND ND ND -- -- ND %ug/L L 03/03/15 0.22 -- 6 ND -- 0.953 J 0.224 J ND ND ND ND ND -- -- ND 08/12/15 0.22 -- 6 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L OZ17/16 0.22 -- 6 0.277 J -- ND ND ND 0.252 J ND ND ND -- -- ND ug/L 07/14/16 0.22 -- 6 ND -- 0.393 J ND ND ND ND ND ND -- -- ND ug/L 01/11/17 0.37 -- 6 ND -- 0.854 J ND ND ND ND ND ND ND ND ND ug/L 07/11/17 0.37 -- 6 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/09/18 0.25 -- 6 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/26/18 1.85 5.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/30/19 0.74 2.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/10/19 0.74 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/29/20 0.74 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 0.74 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/19/21 0.74 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 08/18/21 0.74 2.0 -- ND ND ND ND ND ND ND ND ND ND -- ND ug/L 08/30/21 0.74 2.0 -- -- -- -- -- -- -- -- -- -- -- ND ND ug/L 01/26/22 0.74 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 0.74 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND u /L 01/23/23 0.34 5.0 0.36 B 0.87 B 0.39 B ND ND ND 0.35 B ND ND ND ND 1.14 J Arsenic ug/L 10/08/03 -- -- 10 ND -- ND ND ND ND ND -- -- -- - ND NC 2L = 10 ug/L ug/L 01/23/04 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND EPA MCL = 10 ug/L ug/L 07/08/04 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND 01/25/05 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND %ug/L L 07/06/05 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/09/06 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND J ug/L 01/16/07 -- -- 10 ND -- 2.5 B 2.8 B 2.4 B ND ND ND ND -- -- 2.4 ug/L 07/02/07 -- -- 10 ND -- ND ND ND 5.1 J ND ND ND -- -- ND J 01/30/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- 2.1 %ug/L L 07/17/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND 01/14/09 -- -- 10 ND -- ND ND 2.8 J ND ND -- -- -- -- ND %ug/L L 07/16/09 -- -- 10 3.56 J -- ND 4.21 J 4.82 J ND 3.76 J -- -- -- -- ND 01/04/10 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND J %ug/L L 07/01/10 -- -- 10 3.96 B -- 6.39 B 5.99 B 6.13 B 6.64 B 3.12 B 3.16 B ND -- -- 3.54 01/13/11 -- -- 10 ND -- 4.13 J ND 3.35 J 2.82 J 4.74 J 3.81 J ND -- -- ND %ug/L L 07/21/11 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND 01/16/12 -- -- 10 ND -- ND ND 3.12 J ND ND ND ND -- -- ND J %ug/L L 07/09/12 -- -- 10 3.41 B -- ND ND 4.41 B ND ND 3.18 B ND -- -- 3.13 01/14/13 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 07/09/13 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND 01/30/14 -- -- 10 ND -- ND ND ND 6.93 J ND ND ND -- -- ND %ug/L L 07/08/14 -- -- 10 ND -- 5.83 J ND ND ND ND ND ND -- -- ND 03/03/15 5.4 -- 10 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 08/12/15 6.8 -- 10 ND -- 8.12 J ND ND ND ND ND ND -- -- ND 02/17/16 6.8 -- 10 ND -- 6.94 J ND ND ND 9.29 J ND ND -- -- ND %ug/L L 07/14/16 6.8 -- 10 ND -- 9.80 J ND ND 7.81 J ND ND ND -- -- ND ug/L 11/11/17 6.8 -- 10 ND -- 14.1 ND ND ND ND ND ND ND ND ND Dissolved ug/L 01/11/17 6.8 -- 10 -- -- 8.1 J -- -- -- -- -- -- -- -- -- ug/L 07/11/17 6.8 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/09MS 6.8 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND 07/26/18 7.6 10 -- ND -- ND ND ND ND ND ND ND ND ND ND %ug/L L 01/30/19 7.6 10 -- ND -- ND ND ND ND ND ND ND ND ND ND 07/10/19 7.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND %ug/L L 01/29/20 7.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND 07/07/20 7.6 10 - ND ND ND ND ND ND ND ND ND ND ND ND %ug/L L 01/19,21 7.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND 08/18/21 7.6 10 - ND ND ND ND ND ND ND ND ND ND - ND %ug/L L 08/30/21 7.6 10 -- -- -- -- ND ND ug/L 01/26/22 7.6 10 - ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 7.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND u /L 01/23/23 6.4 20 ND ND ND ND ND ND ND ND ND ND ND ND Barium ug/L 10/08/03 -- -- 500 ND -- ND ND ND ND ND -- -- -- -- ND NC 2L = 700 ug/L ug/L 01/2%4 -- -- 500 ND - ND ND ND ND ND -- -- -- - ND EPA MCL = 2000 ug/L ug/L 07/08/04 -- -- 500 ND ND ND. ND ND ND -- -- ND ug/L 01/25/05 -------- --- 50 ND ND ND ND ND ND ND %L 07/O6/05 -- 50 ND ND ND ND ND ND -- -- ND 01/09/O6 50 0ug/L ND ND ND ND ND ND ND J 50 ND ND ND ND ND ND -- ND J ug/L 01/16/07 -- 100 141 187 25.5 J 73.9 J 86.7 J 53.5 J 210 464 J 0.90 J%L 07/02/07 -- 100 13 338 29.4 J 33.4 J 87.8 J 57.5 J 23 424 J 1.2 ug/L 01/30/0 100 10 190 46.9 J 666 J 110 82.2 J 143 66.8 0.30 u 07/17/08 -- 10 10 27 365 5 928 NDgL ug/L 01/14/0 10 0%L 101 152 38.3 J 97 J 8.0 J 939 J - - ND J9 07/16/09 -- 13 252 3.1 J 65.9 J 71.6 J 99.0 J -- ND ug/L 01/04/10 10 10 18 37.4 J 117 51.7 J 1 98.5 J 37-.3 J 0.552%L 07/01/1 -- 100 0 11 1586 42.2 J 45.4 J 72.6 J 153 107 23.3 J ND0 01/13/11 10 193 35.0 J 694 J 8 70 J 11ug/L 7 98.5 J 26.6 J ND %L 07/21/11 100 125 273 337 J 87.7 J 75.1 J 14 115 30.1 J ND ug/L 01/16/12 100 108 197 34.9 J 114 52 J 160 118 33 J ND J%L 07/09/12 100 11 338 315 J 48.3 J 687.5 J 223 122 46.0 J ND J 01/1413 100 1ug/L 25 333 47.2 J 74.0 J 66.4 J 162 142 50.21 1.46 J%L 07/09/13 -- 1---0----0 88--......7 J 30-8 36..9 J 46--.2 J 60--.3 6 J 1-2- 17 61....9 J 1. 7 J ug/L 01/30/14 100 78.8 297 446 J 887 J 595 J 146 54 79.7 08 J u 07/08/14 100 542 40.3 J 535 J 573 J 174 156 696 J -- -- 1.13 JgL 3035 01 1.0 10 623 J 427 42.5 J 514 J 49.5 J 12 3.04ug/L 08/12/15 10 .. 100 62.7 J 649 35.3 J 74.7 J 6.8 J 293 181 476 J 233%L ug/L 0 1716 1.0 100 53.3 J 42 334 J 96.6 J 46.6 J 26 194 57.0 J ND u 11 07/4/ 10 100 51.1 0 J 671 J J 31 1 628 1.51 JgL ug/L 01/1117 1.0 -- 100 530 J 726 42.7 J 76.7 J 79.4 J 379 215 774 J 113 160 ND Dissolved ugL 01/11/ 17 10 100 337 -- ug/L 07/11/17 1.0 -- 100 49.8 J ---. 52 388 63.6 53.2 414 218 94.6 80.9 177 139 J L 01/09/18 1.0 10 468 J 926 46.3 J 87.3 J 88.0 J 65 263 128 143 327 ND0 Dissolved ug/L 01/09/18 1.0 - 100 7 - - - - -- -%L -- 07/26/18 1.1 10 - 36. -- 859 32.9 71.4 61.4 551 223 12 79 1 ND 01/30/19 1.1 10 376 309 328 802 39.5 530 24 14 213 170 ND %ug/L L 07/10/19 1.1 10 377 530 1110 555 124 5 763 2502 153 157 329 2.91 J ug/L 01/29/20 1.1 413 5.8 431 36.8 88.8 591.8 7 303 156 332 14 ND0 077/20 1.1 1 360 432 935 395 72.0 406 687 282 136 259 256 ND %ug/L L 01/19/21 1.1 100 313 57.3 57 3.0 115 36.4 814 417 174 417 199 ND ug 0818/21 11 10 340 482 1450 35.2 56.3 77.5 898 480 200 367 - ND 08/30/21 1.1 10 -L -- -- -- -- -- -- -- 370 ND ug/L 01/26/22 1.1 10 -- 33.1 41.2 748 46.8 65.4 46.9 619 613 207 451 106 ND ug/L 07/06/22 1.1 10 -- 30.4 50.8 1490 38.7 67.4 59.0 732 677 229 264 281 ND u /L 01/23/23 4.4 10 33 61 690 51 91 35 490 790 230 360 210 ND Beryllium ug/L 01/16/07 -- -- 1 ND -- ND ND ND ND ND ND ND -- - ND NC 2L = 4 ug/L ug/L 07/02/07 -- -- 1 ND -- ND ND ND ND ND ND ND -- - ND EPA MCL =4ug/L ug/L 01/30/08 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 1 ND -- ND ND ND ND -- -- -- -- ND ug/L 07/16/09 -- -- 1 ND -- ON 0.135 J ND ND 0.090 J ND -- -- -- -- ND ug/L 01/04/10 -- -- 1 ND -- 0.674 J ND ND ND ND ND ND -- -- ND 07/01/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/13/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND 07/21/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/16/12 -- -- 1 ND -- ND ND 0.176 J ND ND ND ND -- -- ND 07/09/12 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/14/13 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 03/03/15 0.10 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 08/12/15 0.10 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 02J17/ 6 0.10 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/14/16 0.10 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/11/17 0.10 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/11/17 0.13 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/09/18 0.13 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/26/18 0.16 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/30/19 0.16 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/10/19 0.16 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/29/20 0.16 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 0.16 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/19/21 0.16 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 08/18/21 0.16 1.0 -- ND ND ND ND ND ND ND ND ND ND - ND ug/L 08/30/21 0.16 1.0 -- -- -- -- -- -- -- -- -- -- -- ND ND ug/L 01/26/22 0.16 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 0.16 1.0 -- ND 0.169 B ND ND ND ND ND ND ND ND ND 0.229 J u /L 01/23/23 0.30 4.0 ND ND ND ND ND ND ND ND ND ND ND ND ►►�� 1 of 9 April 2023 31405795.004 TABLE 4 Summary of Detected Constituents in Groundwater Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Reporting SWS Upgradienl Downgradient Parameter Units Sample Date MDL MRL Re ortln Blanks MW-1 P- 3 MW-2 MWJ MW-4S MW-5 MW-6 MW-7S MW-8 AMW-1 AMW-2 Cadmium ug/L 10/08/03 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND NC 2L = 2 ug/L ug/L 01/23/04 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND EPA MCL = 5 ug/L ug/L 07/08/04 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/25/05 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/06/05 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/09/06 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/12/O6 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/16/07 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/02/07 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30/08 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/16/09 -- -- 1 0.350 B -- 0.390 B 0.310 B 0.200 B 0.111 B 0.293 B -- -- -- -- 1.19 ug/L 01/04/10 -- -- 1 0.299 J -- 0.770 J 0.269 J ND ND 0.296 J 0.153 J 0.344 J -- -- ND ug/L 07/01/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/13/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/16/12 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/13 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 03/03/15 0.36 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 0811Ill 0.36 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 0.17/i6 0.36 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/14/16 0.36 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/11/17 0.36 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/11/17 0.36 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/09/18 0.36 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/26/18 0.36 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/30/19 0.36 1.0 -- ND -- ND ND ND 0.483 J ND ND ND ND ND ND ug/L 07/10/19 0.36 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/29/20 0.36 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 0.36 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/19/21 0.36 1.0 -- ND 2.76 ND ND ND 0.368 J ND ND ND ND ND ND ug/L 08/18/21 0.36 1.0 -- ND ND ND ND ND ND ND ND ND ND -- ND Ug/L 08/30/21 0.36-- -- -- -- -- ND ND ug/L 01/26/22 0.36 1.0 -- ND 0.733 J ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 0.36 1.0 -- ND ND ND ND ND ND ND ND ND ND ND ND u /L 01/23/23 0.44 5.0 ND 2.5 J ND ND ND ND ND ND ND ND ND ND Chromium ug/L 10/OB/03 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND NC 2L = 10 ug/L ug/L 01/23/04 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND EPA MCL = 100 ug/L ug/L 07/08/04 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/25/05 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/O6/0 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/09/06 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/12/0 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/16/07 -- -- 10 2.2 J -- ND ND ND ND ND 17.0 ND -- -- ND ug/L 07/02/07 -- -- 10 ND -- ND ND ND ND ND 19.0 ND -- -- ND ug/L 01/30/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND J ug/L 07/17/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 10 ND -- ND 5.3 J 4.9 J ND ND -- -- -- -- ND ug/L 07/16/09 -- -- 10 0.772 J -- 4.78 J 1.01 J 0.793 J 0.722 J 0.736 J -- -- -- -- ND ug/L 01/04/10 -- -- 10 ND -- 4.22 J 2.58 J ND ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 10 6.26 B -- ND 6.00 B ND ND ND 1.29 B ND -- -- 1.80 J ug/L 01/13/11 -- -- 10 ND -- ND ND ND ND ND 1.26 J ND -- -- ND ug/L 07/21/11 -- -- 10 ND -- 3.62 J ND 14.3 (1.06 J) ND 1.95 J 2.46 J ND -- -- ND ug/L 01/16/12 -- -- 10 ND -- 3.77 J ND 1.70 J ND 4.53 J ND ND -- -- ND ug/L 07/09/12 -- -- 10 ND -- 6.97 J ND ND ND 5.41 J ND ND -- -- ND J ug/L 01/14/13 -- -- 10 ND -- 3.73 B 1.19 B 1.03 B 1.08 B 2.77 B 1.57 B 1.32 B -- -- 1.40 ug/L 07/09/13 -- -- 10 ND -- ND ND ND ND 1.78 J ND ND -- -- ND ug/L 01/3014 -- -- 10 ND -- ND ND ND ND 2.42 J ND 2.08 J -- -- ND ug/L 07/OB/14 -- -- 10 ND -- 3.68 J 2.83 J 10.9 (ND) ND 3.76 J 1.44 J ND -- -- ND ug/L 03/03/15 1.4 -- 10 ND -- 6.93 B ND 1.54 B ND 5.74 B 1.43 B 2.11 B -- -- 1.66 ug/L 08/12/15 1.4 -- 10 ND -- 1.66 J ND ND ND 3.94 J ND ND -- -- ND ug/L 02/17/1 1.4 -- 10 ND -- 5.24 J 6.61 J 1.40 J ND 4.34 J ND ND -- - ND ug/L 07/14/16 1.4 -- 10 ND -- ND ND ND ND 1.70 J ND ND -- - ND ug/L 01/11/17 1.4 -- 10 ND -- ND ND ND ND 2.10 J ND ND ND ND ND ug/L 07/11/17 1.4 -- 10 ND - 1.53 J ND ND ND 4.01 J ND ND ND 1.94 J ND ug/L 01/09/18 1.4 -- 10 ND -- ND ND 3.61 J ND 6.11 J 1.89 J 3.33 J ND 4.12 J ND ug/L 07/26/18 1.4 10 -- ND -- 4.63 J ND ND ND 5.60 J ND 3.35 J ND 3.72 J ND ug/L 01/30/19 1.4 10 -- ND -- 1.94 J 6.90 J ND ND 5.04 J 1.51 J 3.14 J 1.47 J 1.73 J ND ug/L 07/10/19 1.4 10 - ND 2.26 J 2.96 J 1.61 J ND ND 5.03 J 1.61 J ND ND 2.77 J ND ug/L 01/29/20 1.4 10 -- ND ND 2.11 J 2.11 J ND ND 5.79 J ND 2.57 J 1.80 J 1.90 J ND ug/L 07/07/20 1.4 10 - ND ND 8.88 J 8.77 J ND ND 6.80 J ND 12.3 00.5) 4.37 J 2.95 J ND Dissolved ug/L 07/07/20 1.4 10 -- -- -- - _ __ __ __ __ __ __ ug/L 01/19/21 1.4 10 - ND 1.42 J 7.12 J 5.43 J ND ND 8.43 J 1.42 J 11.7 5.94 J 3.15 J ND ug/L 08/18/21 1.4 10 -- ND ND 6.45 J 114 J ND ND 7.88 J ND 13.4 5.25 J - ND ug/L 08/30/21 1.4 10 - - -- -- -- -- -- -- J -- -- -- 4.04 J ND ug/L 01/26/22 1.4 10 -- ND ND 5.84 J 1.51 J ND ND 6.18 J ND 15.3 7.37 J 1.45 J ND ug/L 07/06/22 1.4 10 - ND 2.07 J 7.36 J 1.83 J ND ND 6.01 J ND 14.0 3.48 J 3.98 J ND u /L 01/23/23 1.1 10 ND 4.4 J 2.0 J 4.8 J ND ND 2.7 J ND ND ND 1.3 J ND Cobalt ug/L 01/16/07 -- -- 10 ND -- 14.6 ND ND 3.0 J 5.9 J 3.9 J ND -- - ND NC 2L = 1 ug/L ZI. 07/02/07 -- -- 10 ND -- 27.4 ND ND 4.7 J ND 6.0 J ND -- -- ND No EPA MCL ug/L 01/30/08 -- -- 10 ND -- 11.6 ND ND 5.6 J ND ND ND -- -- ND ug/L 07/17/08 -- -- 10 ND -- 27.6 ND ND 1.4 J ND ND ND -- -- ND ug/L 01/14/09 -- -- 10 ND - 9.4 J ND 1.2 J 4.1 J 13.0 -- -- -- - ND ug/L 07/16/09 -- -- 10 ND -- 26.5 ND 1.65 J 3.30 J 5.05 J -- -- -- -- ND ug/L 01/04/10 -- -- 10 ND - 17.8 ND ND 3.90 J 9.94 J ND ND -- - ND ug/L 07/01/10 -- -- 10 ND -- 14.d ND ND 3.65 J 24.0 ND ND -- -- ND ug/L 01/13/11 -- -- 10 ND - 15.7 ND ND 5.50 J 11.0 ND ND -- - ND ug/L 07/21/11 -- -- 10 ND -- 19.7 ND 1.27 J 5.87 J 17.0 ND ND -- -- ND ug/L 01/16/12 - -- 10 ND - 14.3 ND ND 3.61 J 24.8 ND ND -- - ND ug/L 079/12 10 ND 18.4 ND 1.43 J 6.03 J 24.8 ND ND ND ugL 01/14/13 10 ND 3. ND 1.74 J 355 J 18.8 ND ND ND 01 -9/13 10 ND 13. ND 1.ug 26 J 2.4 J 9.81 J ND 3.33 J ND 0L 1/304 -- -- 10 ND - 13.0 ND ND 2.39 J 14.8 ND 4.60 J - - ND ug/L 07/OS/14 -- -- 10 ND -- 23.4 ND 1.83 J 1.87 J 21.0 ND 4.34 J -- -- ND ug/L 03/03/15 1.1 -- 10 ND - 152 ND ND 220 J 25..3 ND 4.3 J ND ug/L 081215 1 10 .1 19.4 ND 3.09 J 2.34 .70 J 20.8 ND 3.55 J ND ug/L 02/17/16 1. -- 10 14 J J 143 ND ND J ug/L 07/1411 1 -- 10 ND 15.6 ND ND ND 17 ND 4.28 J ND ug/L 1/11/7 01 1. 1 10 ND 179 ND ND 3.89 J 14.7 ND 439 J 7.41 J 790 J ND ug/ 07/11/117 1 10 ND 0. 17 ND ND ND 10.4 ND 6.25 J 5.03 J 111 . ND Dissolved ug/L L 07/7 11 1. 1 -- 10 - - - -- -- -- -- -- -- - 10.4 -- ug/L 01/09/18 1.1 -- 10 ND -- 18.8 J ND 3.92 J 2.58 J 15.9 ND 8.32 J 9.14 J 17.1 ND ug/L 07/26/18 1.4 10 - ND -- 12.8 ND 3.12 J ND 12.0 ND 12.0 12.3 19.3 ND ug/L 01/30/11 1.4 10 -- ND -- 6.47 J ND ND ND 15.8 ND 7.87 J 8.79 J 9.23 J ND ug/L 07/10/19 1.4 10 - ND ND 13.9 ND ND ND 15.3 ND 8.19 J 7.80 J 15.0 ND ug/L 01/29/20 1.4 10 -- ND ND 6.7d J ND ND 2.20 J 12.6 ND 11.7 12.3 8.21 J ND ug/L 07/07/20 1.4 10 -- ND ND J ND ND ND 4.77 J ND 9.29 J 8.92 J 10.9 ND ug/L 01/19/21 1.4 10 -- ND 2.25 J 8.72 8.19 J ND ND 1.62 J 13.9 ND 6.62 J 15.5 10.3 ND ug/L 08/18/21 1.4 10 -- ND ND 9.04 J ND ND ND 5.30 J ND 6.01 J 12.8 - ND ug/L 08/30/21 1.4 10 -- -- -- -- -- -- -- -- -- -- -- 13.0 ND ug/L 01/26/22 1.4 10 -- ND ND 5.88 J 1.45 J ND 1.69 J 6.18 J ND 9.66 J 12.9 1.84 J ND ug/L 07/06/22 1.4 10 -- ND ND 8.00 J ND ND ND 9.27 J ND 12.0 10.0 15.0 ND u /L 01/23/23 1.4 10 ND 2.3 J 7.3 J 2.2 J ND ND 14 ND 9.5 J 9.5 J 9.3 J ND Copper ug/L 01/16/07 -- -- 10 14.5 -- ND ND 4.60 J ND ND 12.3 ND -- -- ND NC 2L = 1000 ug/L ug/L 07/02/07 -- -- 10 8.8 J -- ND ND ND ND ND 16.3 3.4 J -- -- ND EPA MCL = 1300 uq/L" uq/L 01/30/08 -- -- 10 3.00 J -- ND ND 1.90 J ND ND 2.70 J 5.30 J -- -- ND J ug/L 07/17/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/16/09 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- 6.42 ug/L 01/04/10 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/13/11 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 10 ND -- ND ND 2.72 B ND ND ND ND -- -- 1.65 ug/L 01/16/12 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND J ug/L 01/14/13 -- -- 10 ND -- ND 1.67 J ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 10 1.63 J -- ND ND 1.93 J ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 10 ND -- ND ND ND ND ND ND 2.73 J -- -- ND ug/L 07/08/14 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 03/03/15 1.6 -- 10 4.20 J -- ND ND 2.18 J ND ND ND ND -- -- ND ug/L 08/ 15 1.6 -- 10 ND -- ND ND ND ND 6.76 J ND 20.3 -- -- ND ug/L 02/17/11 1.6 -- 10 ND -- ND ND ND ND ND ND 3.28 B -- -- 3.66 ug/L 07/14/ 6 1.6 -- 10 ND -- ND ND ND ND ND ND 1.99 B -- -- 15o J ug/L 01/11/17 1.6 -- 10 4.48 B -- 2.78 B 3.45 B 3.26 B 1.97 B 2.25 B 3.25 B 6.10 B 3.40 B 3.28 B 6.33 J ug/L 07/11/17 1.6 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/09/18 1.6 -- 10 ND -- ND ND 3.97 J ND ND ND ND ND ND ND ug/L 07/26/18 1.6 10 -- ND -- ND ND ND ND ND ND ND ND ND 2.02 J ug/L 01/30/19 1.6 10 -- ND -- ND ND ND ND ND ND 2.19 J ND ND ND ug/L 07/10/19 1.6 10 -- 2.47 B 1.92 B 2.12 B ND 2.38 B ND ND ND 2.60 B 2.22 B ND 3.52 J ug/L 01/29/20 1.6 ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 1.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/19/21 1.6 10 -- ND ND ND 1.68 J ND ND ND ND ND ND ND ND ug/L 08/18/21 1.6 10 -- ND ND ND ND ND ND ND ND ND ND -- ND ug/L 08/30/21 1.6 10 -- -- -- -- -- -- -- -- -- -- -- ND ND ug/L 01/26/22 1.6 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 1.6 10 -- ND 4.66 J ND ND ND ND ND ND ND ND 10.0 ND ug/L 01/23/23 3.2 20 ND 8.9 J ND ND ND ND ND ND ND ND ND ND ►►�� 2 of9 April 2023 31405795.004 TABLE 4 Summary of Detected Constituents in Groundwater Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Reporting SWS Upgradienl Downgradient Parameter Units Sample Date MDL MRL Re ortln Blanks MW-1 P- 3 MW-2 MWJ MW-4S MW-5 MW-6 MW-7S MW-8 AMW-1 AMW-2 Lead ug/L 10/08/03 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND NC 2L = 15 ug/L ug/L 01/23/04 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND EPA MCL = 15 ug/L" up/L 07/08/04 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND 01/25/05 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND %ug/L L 07/06/05 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/09/06 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/12/06 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND 01/16/07 -- -- 10 ND -- ND ND ND ND 3.1 J 4.5 J ND -- -- ND %ug/L L 07/02/07 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND 01/30/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 07/17/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND 01/14/09 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND %ug/L L 07/16/09 -- -- 10 ND -- 3.10 J ND ND ND ND -- -- -- -- ND 01/04/10 -- -- 10 ND -- 4.04 B 1.46 B ND 2.76 B 2.08 B ND ND -- -- 1.24 %ug/L L 07/01/10 -- -- 10 ND -- 2.61 J ND ND 2.84 J ND ND ND -- -- ND 01/13/11 -- -- 10 ND -- 4.02 J ND ND ND ND ND ND -- -- ND %ug/L L 07/21/11 -- -- 10 ND -- 3.08 J ND ND ND ND ND ND -- -- ND 01/16/12 -- -- 10 ND -- 4.54 J ND 2.45 J 6.10 J ND ND 1.90 J -- -- ND %ug/L L 07/09/12 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND 01/14/13 -- -- 10 ND -- 4.05 J ND ND ND ND ND ND -- -- ND %ug/L L 07/09/13 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND 01/30/14 -- -- 10 ND -- 3.42 J ND ND 4.35 J ND ND ND -- -- ND %ug/L L 07/08/14 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 03/03/15 2.1 -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 08/12/15 ill -- 10 ND -- 5.51 J ND ND ND 3.62 J ND ND -- -- ND ug/L 02/17/16 3.1 -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/14/16 3.1 -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/11/17 3.1 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/11/17 3.1 -- 10 ND -- 5.28 J ND ND ND ND ND ND ND ND ND ug/L 01/09/18 3.1 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/26/18 3.1 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/30/19 3.1 10 -- ND -- ND ND ND ND ND ND 6.37 J ND ND ND ug/L 07/10/19 3.1 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/29/20 3.1 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 3A 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/19/21 3.1 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 08/18/21 3A 10 -- ND ND ND ND ND ND ND ND ND ND -- ND Ug/L 08/30/21 3.1 10-- -- -- -- -- ND ND ug/L 01/26/22 3.1 10 -- ND ND ND ND ND ND ND ND ND 4.74 J ND ND ug/L 07/06/22 3.1 10 -- ND ND ND ND ND ND ND ND ND ND ND ND u /L 01/23/23 6.6 10 ND ND ND ND ND ND ND ND ND ND ND ND Mercury ug/L 10/OB/03 -- -- 0.5 ND -- ND ND ND ND ND -- -- -- -- ND NC 2L = 1 ug/L ug/L 01.3/04 -- -- 0.5 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/08/04 -- -- 0.5 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/25/05 -- -- 0.5 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/06/05 -- -- 0.5 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/09/06 -- -- 0.5 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/12/06 -- -- 0.5 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/16/07 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- -- ug/L 07/02/07 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- -- ug/L 01/30/08 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 0.2 ND -- ND ND ND ND ND -- -- -- -- -- ug/L 07/16/09 -- -- 0.2 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/04/10 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/13/11 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- -- ug/L 01/16/12 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/13 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/3014 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/OB/14 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 0.3/15 -- -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 08/12/15 0.17 -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 02/17/16 0.17 -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/14/16 0.17 -- 0.2 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/11/17 0.17 -- 0.2 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/11/17 0.099 -- 0.2 ND - ND ND ND ND ND ND ND ND ND ND ug/L 01/09/18 0.099 -- 0.2 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/26/18 0.15 0.20 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/30/19 0.15 0.20 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/10/19 0.15 0.20 - ND 0.289 ND ND ND ND ND ND ND ND ND ND ug/L 01/29/20 0.15 0.20 -- ND 0.222 ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 0.15 0.20 - 0.229 0.274 ND ND ND ND ND ND ND ND ND ND ug/L 01/19/21 0.15 0.20 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 08/18/21 0.15 0.20 - ND ND ND ND ND ND ND ND ND ND - ND ug/L 08/30/21 0.15 0.20 -- -- -- -- ND ND ug/L 01/26/22 0.15 0.20 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 0.15 0.20 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/23/23 0.08 0.20 ND ND ND ND ND ND ND ND ND ND ND ND Nickel ug/L 01/161 7 -- -- 50 3.8 J -- ND ND ND ND ND 17.2 J ND -- -- ND NC 2L = 100 ug/L ug/L 07/02/07 -- -- 50 ND - 3.0 J ND ND ND ND 19.0 J ND -- - ND No EPA MCL ug/L 01/30/08 -- -- 50 2.5 J -- 3.6 J 2.4 J 3.7 J 6.5 J ND 6.0 J 3.3 J -- -- ND 07/17/08 -- -- 50 2.1 J - ND ND ND 3.8 J ND 2.3 J ND -- - ND %ug/L L 01/14/09 -- -- 50 2.4 J -- ND 5.1 J 5.3 J ND ND -- -- -- -- ND ug/L 07/16/09 -- -- 50 0.790 B - 4.11 B 1.47 B 0.988 B 1.04 B 1.05 B -- -- -- - 3.80 ug/L 01/04/10 -- -- 50 ND -- 2.59 J ND ND 3.20 J ND ND ND -- -- ND ug/L 07/01/10 -- -- 50 ND - ND ND ND ND 2.29 J ND ND -- - ND ug/L 01/13/11 -- -- 50 ND -- ND ND ND ND 5.20 J ND ND -- -- ND ug/L 07/21/11 -- -- 50 ND - ND ND 2.44 J ND 5.56 J ND ND -- - ND ug/L 01/16/12 -- -- 50 ND -- ND ND ND ND 2.77 J ND ND -- -- ND ug/L 07/09/12 -- -- 50 ND - ND ND ND ND 6.24 J ND ND -- - ND ug/L 01/14/13 -- -- 50 ND -- ND 2.05 J ND 4.29 J 3.86 J ND ND -- -- ND ug/L 07/09/13 -- -- 50 ND - 2.37 J ND ND ND 4.34 J 2.81 J 3.27 J -- - ND ug/L 01/30/14 -- -- 50 ND -- ND ND 1.86 J ND 5.05 J ND 5.44 J -- -- ND ug/L 07/08/14 -- -- 50 ND - 2.85 J 1.86 J 6.10 J ND 4.71 J ND 3.36 J -- - ND ug/L 03/03/15 1.8 -- 50 ND -- 3.01 J ND ND ND 6.41 J ND 3.19 J -- -- ND ug/L 08/12/15 1.8 -- 50 ND - 2.73 J ND ND ND 5.84 J ND 3.37 J -- - ND ug/L 02/17/16 1.8 -- 50 ND -- ND 2.27 J ND ND 3.23 J ND 5.44 J -- -- ND ug/L 07/14/16 2.2 -- 50 ND - ND ND ND ND 4.27 B 2.20 B 3.63 B -- -- 11.9 ug/L 01/11/17 2.2 -- 50 ND -- ND ND ND ND 4.40 J 3.14 J 4.87 J ND 2.57 J ND ug/L 07/11/17 2.2 -- 50 ND - ND ND ND ND ND ND ND ND 2.60 J ND ug/L 01/09/118 2.2 -- 50 ND ND 241 J 5.17 J ND 4.45 J 242 . J 2.52 J ND . 386 JND ug/L 07/28 2.2 10 2.41 J 4.88 J 242 J ND ND 5.29 J 3.06 J 7.98 J 2.62 J 5.35 J ND ug/L 01/3019 22 10 . 243 J ND 2.41 J ND ND 57 1242 J 783 J 2.41 J 249 J ND ug/L 07/10/19 2.2 10 ND 2.35 J 4.93 J ND ND ND 714 J 349 J 6.67 JND 4.45 JND ug/L 01/29/20 2.2 10 ND ND 3.71 J 256 J ND ND 7.23 J 4.1 . J 897 J 3.39 J 2.9J ND ug/L 07/07/20 2.2 10 ND ND ND 285 JND ND 3.09 J 2.29 J 2.25 J 2.54 J 2.906 J ND ug/L 01/19/21 22 10 2.64 J2.74 J ND 3.25 J ND ND 791 J 6.23 J 5.78 J 4.18 J 3.35 J ND ug/L 08/18/21 2.2 10 ND ND 3.52 J ND ND ND 6.17 J 7.82 J 4.53 J 3.31 J - ND ug/L 08/30/21 2.2 10 -- -- -- -- -- -- -- -- -- -- -- 7.08 J ND ug/L 01/26/22 2.2 10 -- ND ND ND ND ND ND 4.80 J 9.61 J ND ND ND ND ug/L 07/06/22 2.2 10 -- 2.54 J 2.22 J 4.00 J 2.31 J ND ND 7.72 J 14.0 7.35 J 3.74 J 7.11 J ND u /L 01/23/23 3.3 40 3.7 J 4.6 J 5.5 J ND ND ND 8.2 J 20 J 8.5 J 4.4 J 5.2 J ND Selenium ug/L 10/08/03 -- -- 20 ND -- ND ND ND ND ND -- -- -- - ND NC 2L = 20 ug/L ug/L 01/23/04 -- -- 20 ND -- ND ND ND ND ND -- -- -- - ND EPA MCL = 50 ug/L ug/L 07/08/04 -- -- 20 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/25/05 -- -- 20 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/O6/O5 -- -- 20 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/09/O6 -- -- 20 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/12/06 -- -- 20 ND -- ND ND ND ND ND -- -- -- -- ND %L 01/16/07 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND 07/02/07 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/30/08 -- -- 10 ND -- ND ND ND ND 2.0 J ND ND -- -- ND 07/17/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/14/09 -- -- 10 ND -- ND 4.0 J ND ND 3.1 J -- -- -- -- ND 07/16/09 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND %ug/L L 01/04/10 -- -- 10 ND -- 1.59 J ND ND ND 2.05 J ND ND -- -- ND 07/01/10 -- -- 10 ND -- 2.72 J ND ND ND 3.59 J ND ND -- -- ND %ug/L L 01/13/11 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND 07/21/11 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/16/12 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND 07/09/12 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/14/13 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30 4 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 03/03/15 0.91 -- 10 ND -- 1.55 J ND ND ND ND ND ND -- -- ND ug/L 08/12/15 5.0 -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 02J17/16 5.0 -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/14/16 6.2 -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/11/17 6.2 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/11/17 6.2 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/09/18 6.2 -- 10 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/26 8 6.2 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/30/19 6.2 10 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/10/19 6.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/29/20 6.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 6.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/19/21 6.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 08/18/21 6.2 10 -- ND ND ND ND ND ND ND ND ND ND - ND ug/L 08/30/21 6.2 10 -- -- -- -- -- -- -- -- -- -- -- ND ND ug/L 01/26/22 6.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 6.2 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/23/23 10 20 ND ND ND ND ND ND ND ND ND ND ND ND ►►�� 3 of9 April 2023 31405795.004 TABLE 4 Summary of Detected Constituents in Groundwater Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Reporting SWS Upgradienl Downgradient Parameter Units Sample Date MDL MRL Re ortln Blanks MW-1 P- 3 MW-2 MWJ MW-4S MW-5 MW-6 MW-7S MW-8 AMW-1 AMW-2 Silver ug/L 10/08/03 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND NC 2L = 20 ug/L ug/L 01/23/04 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND EPA MCL = 100 ug/L ug/L 07/08/04 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/25/05 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/06/05 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/09/06 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/12/O6 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/16/07 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/02/07 -- -- 10 ND -- ND ND ND 2.5 J ND ND 2.0 J -- -- ND ug/L 01/30/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/16/09 -- -- 10 ND -- 3.75 J 0.990 J ND 1.70 J ND -- -- -- -- ND ug/L 01/04/10 -- -- 10 ND -- 1.92 J ND ND 1.09 J ND ND ND -- -- ND ug/L 07/01/10 -- -- 10 ND -- 2.66 J ND ND ND ND ND ND -- -- ND ug/L 01/13/11 -- -- 10 ND -- 3.19 J ND ND ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 10 3.59 J -- 2.28 J ND ND ND ND ND ND -- -- ND ug/L 01/16/12 -- -- 10 ND -- 2.37 J ND 3.30 J ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 10 ND -- 2.38 J ND ND ND 2.88 J ND ND -- -- ND ug/L 01/14/13 -- -- 10 ND -- 3.43 J 3.86 J ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 10 2.69 J -- 4.48 J ND 3.36 J 1.90 J 2.31 J 4.86 J 6.81 J -- -- ND ug/L 01/30/14 -- -- 10 ND -- 2.95 J ND ND ND ND ND 2.21 J -- -- ND ug/L 07/08/14 -- -- 10 ND -- 5.41 J ND ND ND ND ND 2.58 J -- -- ND ug/L 03/03/15 1.9 -- 10 ND -- 7.35 J ND ND ND ND ND ND -- -- ND ug/L 08/12/15 1.9 -- 10 2.57 B -- 9.84 B ND 4.90 B 5.27 B 10.6 B 2.14 B 4.53 B -- -- 2.59 ug/L 02/17/11 1.9 -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/14/ 6 1.9 -- 10 ND -- 4.41 J ND ND ND ND ND ND -- - ND ug/L 01/1 1/17 1.9 -- 10 ND -- 6.32 J ND ND ND ND ND 2.06 J ND ND ND ug/L 07/11/17 1.9 -- 10 5.30 J -- ND ND ND ND 3.78 J ND 2.59 J 3.30 J 2.57 J ND ug/L 01/09/18 1.9 -- 10 3.53 J -- 15.5 J 2.41 J 4.04 J ND 5.69 J 4.13 J 9.94 J 2.72 J 3.35 J ND ug/L 07/26/18 1.9 10 -- ND -- ND ND ND 14.3 ND ND ND ND ND ND ug/L 01/30/19 1.9 10 -- ND -- ND 4.37 J ND ND ND ND ND ND ND ND ug/L 07/10/19 1.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/29/20 1.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 1.9 10 -- ND ND ND 11.8 ND ND ND ND ND ND ND ND ug/L 01/19/21 1.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 08/18/21 1.9 10 -- ND ND ND ND ND ND ND 2.28 J ND ND -- ND ug/L 08/30/21 1.9 10 -- -- -- -- -- -- -- -- -- -- -- ND ND ug/L 01/26/22 1.9 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 1.9 10 -- ND ND ND 2.11 J ND ND ND ND ND ND ND ND u /L 01/23/23 1.5 10 ND ND ND ND ND ND ND ND ND ND ND ND Thallium ug/L 01/16/07 -- -- 5.5 ND -- 0.048 J ND ND ND ND ND ND -- -- ND NC 2L = 2 ug/L ug/L 07/02/07 -- -- 5.5 0.043 J -- 0.097 J ND ND ND ND ND ND -- -- ND EPA MCL=2 ug/L ug/L 01/30/08 -- -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 5.5 ND -- 0.046 J ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 5.5 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/16/09 -- -- 5.5 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/04/10 -- -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/13/11 -- -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/16/12 -- -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/13 -- -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 5.5 ND -- ND ND ND 0.489 J ND ND ND -- -- ND ug/L 07/08/14 -- -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 03/03/15 0.11 -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 08/12/15 0.11 -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 02/17/16 0.11 -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/14/16 0.11 -- 5.5 0.575 J -- 0.211 J 0.502 J 0.482 J 0.414 J 0.169 J 0.303 J 0.345 J -- -- ND ug/L 01/11/17 0.11 -- 5.5 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/11/17 0.11 -- 5.5 0.131 J -- ND 0.118 J ND ND ND ND ND 0.143 J 0.148 J ND ug/L 01/09/18 0.05 -- 5.5 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/26/18 0.55 5.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/30/19 0.22 2.0 -- 0.410 J -- 0.223 J 0.399 J 0.354 J ND ND 0.263 J ND 0.293 J 0.263 J ND ug/L 07/10/19 0.22 2.0 -- 0.315 J ND ND ND ND ND ND ND ND ND 0.401 J ND ug/L 01/29/20 0.22 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 0.22 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 01/19/21 0.22 2.0 - 0.487 J 0.520 J 0.259 J 0.474 J 0.472 J ND ND 0.488 J 0.258 J 0.378 J 0.401 J ND ug/L 08/18/21 0.22 2.0 -- ND ND ND ND ND ND ND ND ND ND -- ND ug/L 08/30/21 0.22 2.0 - -- -- -- -- -- -- -- -- -- -- ND ND ug/L 01/26/122 0.22 2.0 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 0.22 2.0 - ND ND ND ND ND ND ND ND ND ND ND ND u /L 01/23/23 0.26 1.0 ND ND ND ND ND ND ND ND ND ND ND ND Vanadium ug/L 01/16/07 -- -- 25 7.5 J -- ND ND 4.4 J ND ND 34.4 ND -- - ND NC 2L = 7 ug/L ug/L 07/021 7 -- -- 25 5.9 J -- ND 1.9 J 2.3 J ND ND 44.3 2.6 J -- -- ND No EPA MCL ug/L 01/30/08 -- -- 25 3.7 J - ND ND 3.6 J ND ND 13.3 J ND -- - ND ug/L 07/17/08 -- -- 25 2.5 J -- ND ND 19 J ND ND 11.4 J ND -- -- ND ug/L 01/14/09 -- -- 25 1.7 J - ND ND 6.8 J ND ND -- -- - - ND ug/L 07/16/09 -- -- 25 2.16 J -- ND 1.08 J 3.75 J 1.59 J 0.965 J -- -- -- -- ND ug/L 01/04/10 -- -- 25 1.91 J - ND 0.544 J 3.00 J ND ND 10.1 J 2.43 J - - ND ug/L 07/01/10 -- -- 25 ND -- ND ND ND ND ND 10.5 J ND -- -- ND ug/L 01/13/11 -- -- 25 1.80 J - ND ND 2.32 J ND ND 10.2 J ND - - ND ug/L 07/21/11 -- -- 25 ND -- ND ND 24.6 J ND ND 9.72 J ND -- -- ND ug/L 01/16/12 - -- 25 1.73 J - ND ND 42.6 ND ND 9.90 J ND -- - ND ug/L 07/09/12 -- -- 25 1.55 J -- ND ND 2.05 J ND ND 9.46 J ND -- -- ND ug/L 01/14/13 - -- 25 1.81 J - ND ND ND ND ND 10.6 J ND -- - ND ug/L 07/09/13 -- -- 25 ND -- ND ND 2.32 J ND ND 9.62 J ND -- -- ND ug/L 01/390 4 -- -- 25 ND - ND ND 6.97 J ND ND 9.31 J ND -- - ND ug/L 07/0114 -- -- 25 ND -- ND ND ND ND ND 9.21 J ND -- -- ND ug/L 03/03/15 1.4 -- 25 ND - ND ND 6.10 J ND ND 9.36 J ND -- - ND ug/L 08/12/15 1.4 -- 25 ND -- ND ND 4.78 J ND 1.59 J 9.20 J ND -- -- ND ug/L 02M 7/16 1.4 -- 25 ND - ND ND 11.2 J ND ND 9.15 J ND -- - ND ug/L 07/14/16 1.4 -- 25 ND -- ND ND 1.98 J ND 1.46 J 8.95 J ND -- -- ND ug/L 01/11/17 1.4 -- 25 ND - ND ND 7.20 J ND ND 9.24 J ND ND ND ND ug/L 07/11/17 1.4 -- 25 ND -- 2.79 J ND 1.69 J 1.89 J 2.10 J 9.77 J ND ND ND ND ug/L 0119/18 1.4 -- 25 ND - ND ND 22.1 J ND ND 10.3 J ND ND ND ND ug/L 07/26/18 1.4 10 -- ND -- ND ND 1.74 J ND 1.65 J 8.76 J ND ND ND ND ug/L 01/30/11 1.4 10 -- 1.50 J -- ND ND 1.93 J ND ND 9.20 J ND ND ND ND ug/L 07/10/19 1.4 10 -- ND ND ND ND ND ND 2.04 J 9.57 J ND ND ND ND ug/L 01/29/20 1.4 10 - ND ND ND ND ND ND ND 10.1 ND ND ND ND ug/L 07/07/20 1.4 10 -- 1.57 J ND 1.98 J ND 1.40 J ND 2.93 J 8.72 J ND ND ND ND ug/L 01/19/21 1.4 10 - ND ND ND ND ND 1.48 J ND 7.09 J ND ND ND ND ug/L 08/18/21 1.4 10 -- ND ND ND ND ND ND ND 5.79 J ND ND -- ND ug/L 08/30/21 1.4 10 - -- -- -- -- -- -- -- -- -- -- ND ND ug/L 01/26/22 1.4 10 -- ND ND ND ND ND ND ND 4.75 J ND ND ND ND ug/L 07/06/22 1.4 10 -- ND ND ND ND ND ND ND 4.26 J ND ND ND ND u /L 01/23/23 1.0 10 1.6 J 11 2.0 J 1.4 J 1.4 J 1.5 J 3.5 J 9.3 J 1.1 J 1.9 J 1.3 J ND Zinc ug/L 01/16/07 -- -- 10 25.7 B -- 4.0 B 6.5 B 23.4 B 9.1 B 11.0 B 48.1 B 7.4 B -- - 10.0 NC 2L = 1000 ug/L ug/L 07/02/07 -- -- 10 ND -- 28.0 ND ND ND 10.1 41.1 3.9 J -- -- ND EPA MCL = 5000 ug/L' ug/L 01/30/08 -- -- 10 2.3 B -- 1.8 B 2.9 B 3.8 B 3.0 B 4.9 B 9.1 J 4.4 B -- -- 1.6 ug/L 07/17/08 -- -- 10 ND -- ND ND ND ND 4.2 J ND ND -- -- ND ug/L 01/14/09 -- -- 10 ND -- 3.8 J ND ND ND ND -- -- -- -- ND ug/L 07/16/09 -- -- 10 6.77 B -- 4.89 B 5.55 B 7.01 B 5.28 B 3.44 B -- -- -- -- 20.5 ug/L 01/04/10 -- -- 10 1.72 B -- 6.29 B 124 B 2.35 B 2.57 B 3.88 B ND 2.98 B -- -- 2.25 ug/L 07/01/10 -- -- 10 ND -- ND ND ND 6.66 J 7.04 J 4.90 J ND -- -- ND ug/L 01/13/11 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 10 ND -- ND ND 4.06 J ND 5.52 J ND ND -- -- ND ug/L 01/16/12 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 079/12 10 ND ND ND ND ND 5.67 J ND ND ND ugL 01/14/13 10 ND ND ND ND ND ND ND ND ND 01ug 7/09/3 10 ND ND ND ND ND 435 J ND 398 J -- -- ND 0L 1/30 4 10 3.97 J 4.83 J 41 J 5.51 J ND 5.86 J ND 7.3 J ND ug/L 07/0814 10 ND ND 3.86 J ND 9.69 J ND ND 5.50 J ND ug/L 0315 3.8 -- 10 ND -- ND ND 4.77 J ND ND ND ND -- -- ND ug/L 08/12/15 3.8 -- 10 ND -- 4.12 J ND 8.46 J ND 15.8 ND 9.95 J -- -- ND ug/L 02J17/16 3.8 -- 10 60.0 -- 5.54 J ND 25.8 6.06 J ND ND 4.75 J -- -- ND ug/L 07/14/16 4.4 -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/11/17 4.4 -- 10 ND -- ND ND ND ND ND ND 6.11 J ND ND ND ug/L 07/11/17 4.4 -- 10 ND -- 5.01 J ND ND ND ND ND ND ND ND ND ug/L 01/09/18 4.4 -- 10 ND -- ND ND 4.68 J ND ND ND 6.05 J ND ND ND ug/L 07/26 8 4.4 10 -- 4.43 J -- 4.90 J ND 7.68 J 4.54 J ND ND ND ND ND ND ug/L 01/30/19 4.4 10 -- ND -- ND ND ND 8.31 J ND ND ND ND ND ND ug/L 07/10/19 4.4 10 -- 5.55 J ND 6.70 J ND 4.62 J ND ND ND ND ND ND ND ug/L 01/29/20 4.4 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 4.4 10 -- ND ND ND 7.83 J ND ND ND 4.52 J ND ND ND ND ug/L 01/19/21 4.4 10 -- ND ND ND ND ND ND ND ND ND ND ND ND ug/L 08/18/21 4.4 10 -- ND ND 4.66 J ND ND ND ND ND ND ND - ND ug/L 08/30/21 4.4 10 -- -- -- -- -- -- -- -- -- -- -- ND ND ug/L 01/26/22 4.4 10 -- ND ND ND ND ND ND ND ND 4.59 J ND ND ND ug/L 07/06/22 4.4 10 -- ND ND ND 4.63 J ND ND ND ND ND ND ND ND u /L 01/23/23 8.7 20 ND ND ND ND ND ND ND ND ND ND ND ND ►►�� 4 of9 April 2023 31405795.004 TABLE 4 Summary of Detected Constituents in Groundwater Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Reporting SWSn Upgradient Downgradient Parameter Units Sample Date IIIL MRL Re ortl Blanks MW-1 P- 3 MW-2 MW-3 MWdS MW-5 MW-6 MW-7S MW-8 AMW-1 AMW-2 Iron ug/L 01/16/07 -- -- -- 2530 -- 3410 80 J 1020 9860 700 16400 680 -- -- -- NC 2L = 300 ug/L ug/L 07/02/07 -- -- 300 1510 -- 18600 46 J 314 4960 592 19500 497 -- -- -- EPA MCL = 300 ug/L* ug/L 01/30/08 -- -- 300 533 -- 327 31 J 2220 21100 106 J 3320 1110 -- -- ND 07/17/08 -- -- 300 161 J -- 10300 ND 1730 8620 ND 448 69 J -- -- ND ZL L 01/14/09 -- -- 300 65 J -- 2740 26 J 3300 28800 1110 -- -- -- -- ND ug/L 07/16/09 300 84.2 J 18000 ND 2490 7570 642 -- -- ------ ------ D N-- ugL 01/04/10 300 155 J 1700 90.1 J 10 33600 1750 58. 2 ND ug/L 07/01/10 300 42.7 J 21100 63.2 J 1980 42000 4290 2 J ND ND ugL 01/13/11 -- ------ 300 30.4 J 29100 36.4 J 803 4120 1170 269 J 90.9 J ND ug/L 07/21/11 300 44.5 J -- 35900 47.1 J 21113300 37800 1900 857 J 41.0 J ugL 01/16/12 30 133 J 15700 379 J 100 45400 5270 9.1 0.8 J 27.6 J ND ug/L 079/12 30 32.7 J 4700 282 J 180 17000 750 J 49.2 J ND u 01/14/13 300 0 04 J 31300 72.9 J 140 5230 3040 1gL 43 J 148 J ND 01 7/09/3 300 76.6 J 27200 39.0 J 169 41300 0ug/L 280 79.4 J 325 ND ugL 011304 300 87.8 J 24500 208 J 5330 56300 2110 46 J2570 ND ug/L 07/O814 -- 300 ND 56100 653 J 1400 3300 42600 61.3 J 39000 ND ugL 03/015 22 300 61.4 B 3800 3.2 B 1860 91700 36 ND 60 73.8 ug/L 08/12/15 22 300 ND 59100 487.7 J 1630 46200 9550 28.6 J 876 ND ugL 02/17/16 22 30 51.8 J 21200 100 J40 39400 5840 384 J 1020 -- -- ND ug/L 07/14/16 22 3-0-0 ND. 278000 48.8 B 907 35500 60 38.4 B 462 23.3J ugL 01/11/17 22 300 61.7 J 46000 671 J 4860 57000 4210 ND 290 1590 525 ND ug/L 07/11/17 22 300 29.7 J 3320 62.6 J 1160 4100 7870 ND 3940 1290 2590 ND Dissolved ugL 07/11/17 22 30 -- ---- - - - - - - 26.7 J - ug/L 01/09/18 22 0 54. 600 91.9 J 5770 15500 6680 33.7 J 781 1890 3950 ND ugL 07/26/18 22 50 - 25.3 J 45400 76.5 54 29500 7800 ND 1000 4750 5410 ND ug/L 01/30/19 22 50 233 J 14100 41.7 J 643 35200 6900 241 J 201 5730 3140 ND ugL 07/10/19 22 5 267 J 483 56100 66.1 83 24100 12600 55.8 3770 3440 5070 ND ug/L 01/29/20 22 50 -- ND ND 13500 432 538 45700 7690 24.2 J 1010 10500 2620 ND ug/L 07/07/20 22 50 -- 117 162 36100 355 575 33600 8510 80.3 4250 7760 4340 ND Ug/L 01/19/21 22 50 -- ND 177 22800 291 1720 40200 10100 ND 5460 14900 4970 ND ug/L 08/18/21 22 50 -- ND 78.5 40100 353 946 11800 12000 39.9 J 2640 11700 -- ND Ug/L 08/30/21 22 50 -- -- -- -- -- -- -- -- -- -- -- 7020 ND ug/L 01/26/22 22 50 -- ND 134 17200 3480 976 45300 4270 51.1 2410 11700 163 ND ug/L 07/06/22 22 50 -- ND 150 42700 673 1160 37600 18000 72.9 7360 7310 7740 ND u/L 01/23/23 2--0-- 1--0--0 ND 36--0-- 190300 4700 350200 13000 6..5 J 43-0-.0 00 13----0---- 0 26---------0- D N---- Manganese L 01/16 -- - 50.6 6160 4.7 J 2620 361 205 204 -- NC2L = 50 ug/L ug/L 07/02/0 50 30.6 J 9540 4.2 J 29.5 J 1040 21.3 J 229 244 - EPA 08 50 16.1 J 7760 8.0 J 27.3 J 4340 12.6 J 64.8 208 ND ug 07/17/0 50 26.7 J 25900 14.1 J 358 J 1080 10.5 J 11.1 J 94.2 ND 01/14/0 50 3.5 J 10400 10.7 J 244 J 3450 718 - -- ND ug/L L 07/16/09 50 15.7 J 2200 6.8 J 76.9 2480 340 -- ND ug/L 01/04/10 50 5.12 J 13200 21.9 J 363 J 3200 707 2 ND ug/L 07/01/1 50 8.43 B 15100 21.0 J 42.3 J 3420 1850 680 B 851 2.75 ug/L 01/13/11 000 3 J 73.4 ND ug/L 07/21/11 50 6.10J 19600 19.0 J 5841....05 3080 2470 3.62 J 551 - ug/L 01/16/12 50 5.41 J 8520 22.4 J 37.6 J 320 2"0 ND 73.1 ND ug/L 07/09/12 -- 5 3.82 J 17900 12.1 J 54.2 1890 3530 179 J 1160 ND ug/L 01/14/13 50 4.14 B -- 14300 24.2 J922 2280 2720 4...328 B 183 1.28 ug/L 07/09/3 -- 5 18.1 J 19000 169 .6 J62. 2290 1790 6.2 J 1840 ND ug/L 01/30/14 50 7.75 J 16800 36.8 J 378 J 3120 2580 27 J 2090 ND ug/L 07/08/14 -- 5 5.04 B 24900 16.4 J 59. 2060 2640 863 B 2010 1.97 ug/L 03/03/15 1.1 50 6.0 J 17300 16.1 J 20.04 J 2480 3120 ND 240 ND ug/L 08/12/15 11 50 . 420 B 20800 14.3 J 76.4 2410 3030 2.0 B 1670 1.18 ug/L 021716 1.1 50 7.3 J 1600 18 J 53.1 2240 3530 2.2 B 2040 1.19 ug/ 07/14/6 11 50 5.24 B 100 2 J51 1970 3490 9 43 B 2650 8L 2 J ug/L 01/11/17 1.1 50 5.30 J -- 24800 17.6 J 34.6 J 2860 4090 1.44 J 4820 2980 1150 ND ug/L 07/11/17 1A -- 50 7.16 J -- 18200 14.6 J 44.6 J 1940 3760 1.58 J 8540 2930 1670 ND issov ug/L07/11/17 -- 5 -- -- -- -- -- -- -- -- 7840 2960 1570 ND ug/L 01/09MS 1.1 -- 50 6.80 B -- 21400 26.0 J 97.6(92.2) 1800 5450 3.06 B 19300(16600) 3620 3340 2.57 J Dissolvedug/L-- 5 -- -- -- -- -- -- -- -- 16800 -- -- ND Verification Event ug/L 03/16/18 1.1 -- 50 -- -- -- -- -- -- -- -- 19600 -- -- ND Dissolvedug -- 5 -- -- -- -- -- -- -- -- 20200 -- -- ND ug/L 07/26MS 1.5 10 -- 5.21 B 15-400 13-..2 B 741-.6 18-00 49-50 ND 19-500 4740 359 2.80 J ugL 01/30/19 1.5 10 5.24 J 9540 15.1 40.2 1540 4840 ND 20900 5980 10 ND ug/L 07/11 1.5 10 74 B 283 .1 19000 56 148 1170 6 3.07 B 21400 5010 394130 3.63 J ugL 01/292 1.5 10 4 5 11700 25.5 37.5 2000 620 2.17 8500 ND ug/L 0707/2 15 10 6.30J32.7 14200 59.5 94.3 1050 5740 626 J20800 6630 2850 ND0 ugL 01/19/21 1.5 10 7.8 B 320 14600 23A 71.3 1360 6730 12. 28300 11100 2810 2.45 J ug/L 08/18/21 1.5 10 4.48 J 91.4 11500 20.1 6.2 1600 6990 14.90 25600 8290 -- ND ugL 08/30/21 1 10 - - - - 4050 ND ug/L 01/26/22 1. 10 -- .62 J 80. 4.7 29000 10-9 566 ND 07/06/22 1.5 0 15.0 65.1 10200 41.9 67.6 2020 6300 76.6 28100 4900 4000 1.65 1ug/L u /L 01/23/23 1.3 10 4.7 J 390 6900 150 33 1300 4800 180 34000 5800 2700 ND Acetone ug/L 01/09/06 -- -- 100 ND - ND ND ND ND ND - - - - ND NC 2L = 6000 ug/L ug/L 07/121 6 -- -- 100 ND -- ND ND ND ND ND -- -- -- -- ND No EPA MCL ug/L 01/16/07 -- -- 100 ND - ND ND ND ND ND ND ND - - ND ug/L 07/02/07 -- -- 100 ND -- ND ND ND ND ND ND ND -- -- 1.2 ug/L 01/30/08 -- -- 100 ND - ND ND ND ND ND ND ND - - ND ug/L 07/17/08 -- -- 100 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 100 ND - ND ND ND ND ND -- -- -- - ND ug/L 07/16/09 -- -- 100 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/04/10 -- -- too ND - ND ND ND ND ND ND ND -- - 7.1 ug/L 07/01/10 -- -- 100 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/13/11 -- -- 100 ND - ND ND ND ND ND ND ND -- - ND ug/L 07/21/11 -- -- 100 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/16/12 - -- 100 ND - ND ND ND ND ND ND ND -- - ND ug/L 07/09/12 -- -- 100 ND -- ND ND ND ND 5.6 J ND ND -- -- ND ug/L 01/14/13 - -- too ND - ND ND ND ND ND ND ND -- - ND ug/L 07/09/13 -- -- 100 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 100 ND - ND ND ND ND ND ND ND -- - ND ug/L 07/08/14 -- -- 100 ND -- 9.8 J ND ND 1.3 J 2.1 J ND 1.9 J -- -- ND ug/L 03/03/11 1.2 -- 100 ND - 4.4 J ND ND 2.5 J ND ND ND -- - ND ug/L 08/12/15 1.2 -- 100 ND -- ND ND ND ND 11 J ND ND -- -- ND ug/L 02/17/16 1.2 -- too ND - ND ND ND ND ND ND ND -- - ND ug/L 07/14/16 10 -- 100 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/11/17 10 -- 100 ND - ND ND ND ND ND ND ND ND ND 11 J ug/L 07/11/17 10 -- 100 ND -- ND ND ND ND 16 J ND ND ND ND ND ug/L 01/09/18 10 -- 100 ND - ND ND ND ND ND ND ND ND ND 17 J ug/L 07/26/18 10 20 -- ND -- 11 J ND ND ND 14 J ND ND ND ND ND ug/L 01/30/19 10 20 -- ND - ND ND ND ND 17 J ND ND ND ND ND ug/L 07/10/19 10 20 -- ND -- 36 ND ND ND 13 J ND ND ND ND ND ug/L 01/29/20 10 20 - ND - 11 J ND ND ND 16 J ND ND 12 J ND ND ug/L 07/07/20 10 20 -- ND -- 28 ND ND ND 12 J ND ND ND ND ND ug/L 01/19/21 10 20 - ND - 19 B ND ND ND ND ND ND ND 20 B 25 ug/L 08/18/21 10 20 -- -- -- ND -- ND ND ND -- ND ND -- ND ug/L 08/30/21 10 20 - ND - -- ND -- -- -- ND -- -- ND ND ug/L 01/26/22 10 20 -- ND -- 15 B ND ND ND ND ND ND 13 B ND 13 J ug/L 07/06/22 10 20 -- ND - 19 J ND ND ND 16 J ND ND ND 13 J ND u /L 01/23/23 10 20 ND 23 B ND ND ND 49 B ND 21 B 13 B 11 B 21 Benzene ug/L 01/0916 - -- 5 ND ND ND ND ND ND -- -- -- - ND NC 2L = 1 ug/L ug/L 07/12/06 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND EPA MCL=5ug/L ug/L 01/16/07 -- -- 3 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/02/07 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30/08 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/16/09 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/04/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/13/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/16/12 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 1 ND -- 0.78 J ND ND ND ND ND ND -- -- ND ug/L 01/14/13 -- -- 1 ND -- 0.72 J ND ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 1 ND -- 0.57 J ND ND ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 1 ND -- 1.6 ND ND ND ND ND ND -- -- ND ug/L 03/03/15 0.15 -- 1 ND -- 0.79 J ND ND ND ND ND 0.49 J -- -- ND ug/L 08/12/15 0.15 -- 1 ND -- 2.0 ND ND ND ND ND ND -- -- ND Verification Event ug/L 09/28/15 0.15 -- 1 -- -- 2.6 -- -- -- -- -- -- -- -- ND ug/L 02/17/16 0.15 -- 1 ND -- 0.98 J ND ND ND 0.63 J ND ND -- -- ND ug/L 07/14/16 0.15 -- 1 ND -- 1.7 ND ND ND 1.0 ND 0.44 J -- -- ND Verification Event ug/L 08/04/16 0.15 -- 1 -- -- 1.0 -- -- -- 1.1 -- -- -- -- ND ug/L 01/11/17 0.15 -- 1 ND -- ND ND ND ND 0.61 J ND ND ND ND ND ug/L 07/11/17 0.15 -- 1 ND -- ND ND ND ND 1.7 ND ND ND ND ND ug/L 01/09/18 0.15 -- 1 ND -- ND ND ND ND 2.1 ND 0.63 J ND 1.4 ND Verification Event ug/L 03/16/18 0.15 -- 1 -- -- -- -- -- -- -- -- -- -- ND ND ug/L 07/26/18 0.15 1.0 -- ND -- 2.8 ND ND ND 1.7 ND 1.2 ND 1.2 ND Verification Event ug/L 09/10/18 0.15 1.0 -- -- -- 2.2 -- -- -- -- -- ND -- ND ND ug/L 01/30/19 0.15 1.0 -- ND -- 1.1 ND ND ND 3.6 ND 0.86 J 0.40 J 0.72 J ND ug/L 07/10/19 0.15 1.0 -- ND -- 3.3 ND ND ND 4.5 ND ND ND 1.8 ND Verification Event ug/L 10/04/19 0.15 1.0 -- ND -- -- -- -- -- -- -- -- -- 2.7 ND ug/L 01/29/20 0.15 1.0 -- ND -- 0.57 J ND ND ND 2.2 ND 0.57 J 0.85 J ND ND ug/L 07/07/20 0.15 1.0 -- ND -- 2.1 ND ND ND 3.0 ND 0.97 J 0.45 J 1.7 ND ug/L 01/19/21 0.15 1.0 -- ND -- 1.9 ND ND ND 5.0 ND 1.7 1.2 1.0 ND Verification Event ug/L 02/24/21 0.15 1.0 -- ND -- -- -- -- -- -- -- 1.5 1.6 - ND ug/L 08/18/21 0.15 1.0 -- -- -- 3.6 -- ND ND 4.7 -- 1.7 0.53 J - ND ug/L 08/30/21 0.15 1.0 -- ND -- -- ND -- -- -- 0.44 J -- -- 2.6 ND ug/L 01/26/22 0.15 1.0 -- ND -- 1.7 ND ND ND 2.7 0.73 J 1.3 1.0 ND ND ug/L 07/O6/22 0.15 1.0 -- ND -- 4.2 ND ND ND 3.5 0.85 J 2.3 ND 2.1 ND u /L 01/23/23 0.15 1.0 ND 1.5 ND ND ND 2.8 1.2 1.6 0.62 J 0.87 J ND ►►�� 5 of9 April 2023 31405795.004 TABLE 4 Summary of Detected Constituents in Groundwater Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Reporting SWS Upgradient Downgradient Parameter Units Sample Date MDL MRL Re ortin Blanks MW-1 P- 3 MW-2 MWJ MW-4S MW-5 MW-6 MW-7S MW-8 AMW-1 AMW-2 1,1-Dichloroethane ug/L 01/09/06 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND NC 2L = 6 ug/L %L 07/12/06 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND No EPA MCL ug/L 01/16/07 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/02/07 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30/08 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/16/09 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/04/10 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/13/11 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/16/12 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/13 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01130 4 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/0114 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 03/03/15 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 08/12/15 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 02J17/16 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/14/16 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/11/17 -- -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/11/17 -- -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/09/18 -- -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/261,8 0.13 1.0 -- ND -- ND ND ND ND ND ND 0.53 J ND ND ND ug/L 01/30/19 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/10/19 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/29/20 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/19/21 0.13 1.0 -- ND -- ND ND ND ND ND 0.54 J ND ND ND ND ug/L 08/18/21 0.13 1.0 -- -- -- ND -- ND ND ND -- ND ND - ND ug/L 08/30/21 0.13 1.0 -- ND -- -- ND -- -- -- 0.68 J -- -- ND ND ug/L 01/26/22 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 0.13 1.0 -- ND -- ND ND ND ND ND 0.48 J 0.44 J ND ND ND u /L 01/23/23 0.13 1.0 ND ND ND ND ND ND ND ND ND ND ND 1,2-Dichloroethane ug/L 01/09/O6 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND NC 2L = 0.4 ug/L ug/L 07/12/06 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND EPA MCL=5ug/L ug/L 01/16/07 -- -- 3 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/02/07 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30/08 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND 07/16/09 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND %ug/L L 01/04/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND 07/01/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/13/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND 07/21/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/16/12 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND 07/09/12 -- -- 1 ND -- 0.57 J ND ND ND ND ND ND -- -- ND %ug/L L 01/14/13 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND 07/09/13 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/39014 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND 07/OB/14 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 0.3/15 0.21 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND 08/12/15 0.21 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 02/17/16 0.21 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND 07/14/i6 0.21 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/11/17 0.21 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND 07/11/17 0.21 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND %ug/L L 01/09/18 0.21 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND 07/26/18 0.21 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND %ug/L L 01/30/19 0.21 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/10/19 0.21 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/29/20 0.21 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND 07/07/20 0.21 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND %ug/L L 01/19/21 0.21 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND 08/18/21 0.21 1.0 -- -- -- ND -- ND ND ND -- ND ND -- ND %ug/L L 08/30/21 0.21 1.0 -- ND -- -- ND -- -- -- ND -- -- ND ND 01/26/22 0.21 1.0 - ND - ND ND ND ND ND ND ND ND ND ND %ug/L L 07/06/22 0.21 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND u /L 01/23/23 0.21 1.0 ND ND ND ND ND ND ND ND ND ND ND cis-1,2-Dichlometh,n, ug/L 01/0910 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND NC 2L - 70 ug/L ug/L 07/12/06 -- - 5 ND - ND ND ND ND ND -- -- -- - ND EPA MCL=70 ug/L ug/L 01/16/07 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/02/07 -- - 5 ND - ND ND ND ND ND ND ND -- - ND ug/L 01/30/08 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND 07/17/08 -- -- 5 ND - ND ND ND ND ND ND ND -- - ND %ug/L L 01/14/09 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND 07/16/09 -- -- 5 ND - ND ND ND ND ND -- -- -- - ND %ug/L L 01/04/10 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND 07/01/10 -- -- 5 ND - ND ND ND ND ND ND ND -- - ND %ug/L L 01/13/11 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND 07/21/11 -- -- 5 ND - ND ND ND ND ND ND ND -- - ND %ug/L L 01/16/12 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND 07/09/12 -- -- 5 ND - 0.87 J ND ND ND ND ND ND -- - ND zug/L l- 01/14/13 -- -- 5 ND -- 0.83 J ND ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 5 ND - ND ND ND ND ND ND ND -- - ND ug/L 01/30/14 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 5 ND - 0.69 J ND ND ND ND ND ND -- - ND ug/L 03/03/15 0.15 -- 5 ND -- ND ND ND ND ND ND 0.47 J -- -- ND ug/L 08/12/15 0.15 -- 5 ND - 0.57 J ND ND ND ND ND ND -- - ND ug/L 02/117/16 0.15 -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/14/16 0.15 -- 5 ND - ND ND ND ND ND ND ND -- - ND ug/L 01/11/17 0.15 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/11/17 0.15 -- 5 ND - ND ND ND ND ND ND ND ND ND ND ug/L 01/09/18 0.15 -- 5 ND -- ND ND ND ND ND ND 0.66 J ND ND ND ug/L 07/26/18 0.15 1.0 -- ND - ND ND ND ND ND ND 1.0 ND ND ND ug/L 01/30/19 0.15 1.0 -- ND -- ND ND ND ND ND ND 0.81 J ND ND ND ug/L 07/10/19 0.15 1.0 -- ND - ND ND ND ND ND ND 0.72 J ND ND ND ug/L 01/29/20 0.15 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 0.15 1.0 - ND - ND ND ND ND ND ND ND ND ND ND ug/L 01/19/21 0.15 1.0 -- ND -- ND ND ND ND ND ND 1.3 ND ND ND ug/L 08/18/21 0.15 1.0 - - - ND -- ND ND ND -- ND ND - ND ug/L 08/30/21 0.15 1.0 -- ND -- -- ND -- -- -- ND -- -- ND ND ug/L 01/26/22 0.15 1.0 - ND - ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 0.15 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND u /L 01/23/23 0.15 1.0 ND ND ND ND ND ND ND ND ND ND ND ►►�� 6 of April 2023 31405795.004 TABLE 4 Summary of Detected Constituents in Groundwater Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Reporting SWS Upgradienl Downgradient Parameter Units Sample Date MDL MRL Re ortln Blanks MW-1 P- 3 MW-2 MWJ MW-4S MW-5 MW-6 MW-7S MW-8 AMW-1 AMW-2 Ethyl benzene ug/L 01/09/06 -- -- 5 ND -- ND ND ND ND ND -- -- -- ND NC 2L = 600 ug/L ug/L 07/12/06 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND EPA MCL=700 ug/L ug/L 01/16/07 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/02/07 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30/08 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/16/09 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/04/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/13/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/16/12 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/13 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/0114 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 03/03/15 0.13 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 08/12/15 0.13 -- 1 ND -- 0.46 J ND ND ND ND ND ND -- -- ND ug/L 02J17/16 0.13 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/14/16 0.13 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/11/17 0.13 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/11/17 0.13 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/09/18 0.13 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/26/18 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/30/19 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/10/19 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/29/20 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/19/21 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 08/18/21 0.13 1.0 -- -- -- ND -- ND ND ND -- ND ND - ND ug/L 08/30/21 0.13 1.0 -- ND -- -- ND -- -- -- ND -- -- ND ND ug/L 01/26/22 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 0.13 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND u /L 01/23/23 0.13 1.0 ND ND ND ND ND ND ND ND ND ND ND Methylene chloride ug/L 01/09/O6 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND NC 2L = 5 ug/L ug/L 07/12/06 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND EPA MCL=5ug/L ug/L 01/16/07 -- -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND 07/02/07 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/30/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND 07/17/08 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/14/09 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND 07/16/09 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND %ug/L L 01/04/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND 07/01/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/13/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND 07/21/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/16/12 -- -- 1 ND -- 0.51 J ND ND ND ND ND ND -- -- ND 07/09/12 -- -- 1 ND -- 0.92 J ND ND ND ND ND ND -- -- ND %ug/L L 01/14/13 -- -- 1 ND -- 1.1 ND ND ND ND ND ND -- -- ND 07/09/13 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/39014 -- -- 1 ND -- 0.41 J ND ND ND ND ND ND -- -- ND 07/OB/14 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 0.3/15 0.23 -- 1 ND -- 0.48 J ND ND ND ND ND 0.84 J -- -- ND 08/12/15 0.23 -- 1 ND -- ND ND ND ND ND ND 0.96 J -- -- ND %ug/L L 02/17/16 0.23 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND 07/14/16 0.23 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 01/11/17 0.23 -- 1 ND -- ND ND ND ND ND ND ND ND ND 0.57 J 07/11/17 0.23 -- 1 ND -- ND ND ND ND ND ND 1.4 J ND ND ND %ug/L L 01/09/18 0.23 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND 07/26/18 0.23 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND %ug/L L 01/30/19 0.23 1.0 -- ND -- ND ND ND ND ND ND 1.2 ND ND ND ug/L 07/10/19 0.23 1.0 -- ND -- ND ND ND ND ND ND 1.2 B ND ND 0.53 J ug/L 01/29/20 0.23 1.0 -- ND -- ND ND ND ND ND ND 0.95 J ND ND ND 07/07/20 0.23 1.0 -- ND -- ND ND ND ND ND ND 1.0 ND ND ND %ug/L L 01/19/21 0.23 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND 08/18/21 0.23 1.0 -- -- -- ND -- ND ND ND -- ND ND -- ND %ug/L L 08/30/21 0.23 1.0 -- ND -- -- ND -- -- -- ND -- -- ND 0.41 J 01/26/22 0.23 1.0 - ND - ND ND ND ND ND 0.55 J 0.62 J ND ND ND %ug/L L 07/06/22 0.23 1.0 -- ND -- ND ND ND ND ND ND 1.5 ND ND ND u /L 01/23/23 0.23 1.0 ND ND ND ND ND ND 0.58 B ND ND ND 0.26 J 2-Butanone ug/L 01/09/06 -- -- 100 ND -- ND ND ND ND ND -- -- -- -- ND NC 2L = 4000 ug/L ug/L 07/12/06 -- - 100 ND - ND ND ND ND ND -- -- -- - ND No EPA MCL ug/L 01/16/07 -- -- 100 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/02/07 -- - 100 ND - ND ND ND ND ND ND ND -- - ND ug/L 01/30/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND 07/17/08 -- -- 100 ND - ND ND ND ND ND ND ND -- - ND %ug/L L 01/14/09 -- -- 100 ND -- ND ND ND ND ND -- -- -- -- ND 07/16/09 -- -- 100 ND - ND ND ND ND ND -- -- -- - ND %ug/L L 01/04/10 -- -- 100 ND -- ND ND ND ND ND ND ND -- -- ND 07/01/10 -- -- 100 ND - ND ND ND ND ND ND ND -- - ND %ug/L L 01/13/11 -- -- 100 ND -- ND ND ND ND ND ND ND -- -- ND 07/21/11 -- -- 100 ND - ND ND ND ND ND ND ND -- - ND %ug/L L 01/16/12 -- -- 100 ND -- ND ND ND ND ND ND ND -- -- ND 07/09/12 -- -- 100 ND - ND ND ND ND ND ND ND -- - ND zug/L l- 01/14/13 -- -- 100 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 100 ND - ND ND ND ND ND ND ND -- - ND ug/L 01/30/14 -- -- 100 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/0114 -- -- 100 ND - ND ND ND ND ND ND ND -- - ND ug/L 03/03/15 -- -- 100 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 08/12/15 1.3 -- 100 ND - ND ND ND ND ND ND ND -- - ND ug/L 02/17/i6 1.3 -- 100 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/14/16 1.3 -- 100 ND - ND ND ND ND ND ND ND -- - ND ug/L 01/11/17 1.3 -- 100 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/11/17 1.3 -- too ND - ND ND ND ND ND ND ND ND ND ND ug/L 0119/18 1.3 -- 100 ND -- 80 J ND ND ND ND ND ND ND ND ND ug/L 07/26/18 1.3 5.0 -- ND - ND ND ND ND ND ND ND ND ND ND ug/L 01/30/19 1.3 5.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/10/19 1.3 5.0 -- ND - 2.1 J ND ND ND ND ND ND ND ND ND ug/L 01/29/20 1.3 5.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 1.3 5.0 - ND - ND ND ND ND ND ND ND ND ND ND ug/L 01/19/21 1.3 5.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 08/18/21 1.3 5.0 - - - ND -- ND ND ND -- ND ND - ND ug/L 08/30/21 1.3 5.0 -- ND -- -- ND -- -- -- ND -- -- ND ND ug/L 01/26/22 1.3 5.0 - ND - ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 1.3 5.0 -- ND -- ND ND ND ND ND ND ND ND ND ND u /L 01/23/23 10 20 ND ND ND ND ND ND ND ND ND ND ND Toluene ug/L 01/0910 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND NC 2L = 600 ug/L ug/L 07/12/06 -- -- 5 ND - ND ND ND ND ND -- -- -- - ND EPA MCL=1000 ug/L ug/L 01/16/07 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/02/07 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- 0.63 01/30/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 07/17/08 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/16/09 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/04/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/13/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/16/12 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/13 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/08 4 -- -- 1 ND -- 0.43 J ND ND ND ND ND ND -- -- ND ug/L 03/03/15 0.14 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 08/12/15 0.14 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 02/17/16 0.14 -- 1 ND -- ND ND ND ND ND ND 1.2 -- -- ND ug/L 07/l4/16 0.14 -- 1 ND -- ND ND ND ND ND ND 2.0 -- -- ND ug/L 01/11/11 0.14 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/11/17 0.14 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/09/18 0.14 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/26/18 0.14 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/30/19 0.14 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/10/19 0.14 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/29/20 0.14 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 0.14 1.0 -- ND -- 0.50 J ND ND ND ND ND ND ND ND ND ug/L 01/1911 0.14 1.0 -- ND -- ND ND ND ND ND ND 0.62 J ND ND ND ug/L 0.18/21 0.14 1.0 -- -- -- ND -- ND ND ND -- ND ND - ND ug/L 08/30/21 0.14 1.0 -- ND -- -- ND -- -- -- ND -- -- ND ND ug/L 01/26/22 0.14 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/0612 0.14 1.0 -- ND -- 0.57 B ND ND ND ND ND ND ND ND 2.1 ug/L 01/23/23 0.14 1.0 ND 0.18 J ND ND ND 0.17 J ND 0.31 J ND ND ND ►►�� 7 of9 April 2023 31405795.004 TABLE 4 Summary of Detected Constituents in Groundwater Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Reporting SWS Upgradienl Downgradient Parameter Units Sample Date MDL MRL Re ortln Blanks MW-1 P- 3 MW-2 MWJ MW-4S MW-5 MW-6 MW-7S MW-8 AMW-1 AMW-2 Vinyl chloride ug/L 01/09/06 -- -- 10 ND -- ND ND ND ND ND -- -- -- ND NC 2L = 0.03 ug/L ug/L 07/12/06 -- -- 10 ND -- ND ND ND ND ND -- -- -- -- ND EPA MCL=2 ug/L ug/L 01/16/07 -- -- 5.5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/02/07 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/09 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 07/16/09 -- -- 1 ND -- ND ND ND ND ND -- -- -- -- ND ug/L 01/04/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/13/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/16/12 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 1 ND -- 0.78 J ND ND ND ND ND ND -- -- ND ug/L 01/14/13 -- -- 1 ND -- 0.93 J ND ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 1 ND -- 0.90 J ND ND ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/01 14 -- -- 1 ND -- 1.40 ND ND ND ND ND ND -- -- ND ug/L 03/03/15 0.32 -- 1 ND -- 0.58 J ND ND ND ND ND ND -- -- ND ug/L 08/12/15 0.32 -- 1 ND -- 0.95 J ND ND ND ND ND ND -- -- ND ug/L 02J17/16 0.32 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/14/16 0.32 -- 1 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/11/17 0.32 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/11/17 0.32 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/09/18 0.32 -- 1 ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/26/18 0.32 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/30/19 0.32 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/10/19 0.32 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/29/20 0.32 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/07/20 0.32 1.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 01/19/21 0.32 1.0 -- ND -- ND ND ND ND ND ND 0.74 J ND ND ND ug/L 08/18/21 0.32 1.0 -- -- -- ND -- ND ND ND -- ND ND - ND ug/L 08/30/21 0.32 1.0 -- ND -- -- ND -- -- -- ND -- -- ND ND ug/L 01/26/22 0.32 1.0 -- ND -- ND ND ND ND ND ND 0.56 J ND ND ND ug/L 07/06/22 0.32 1.0 -- ND -- ND ND ND ND ND 0.41 J 1.0 ND ND ND u /L 01/23/23 0.32 1.0 ND ND ND ND ND ND ND 0.96 J ND ND ND Xylenes (Total) ug/L 01/09/O6 -- -- 5 ND -- ND ND ND ND ND ND NC 2L - 500 ug/L ug/L 07/12/06 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND EPA MCL = 10,000 ug/L ug/L 07/02/07 -- -- 4 ND -- ND ND ND ND ND ND ND -- -- ND 01/30/08 -- -- 10 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 07/17/08 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND 01/14/09 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND %ug/L L 07/16/09 -- -- 5 ND -- ND ND ND ND ND -- -- -- -- ND 01/04/10 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 07/01/10 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND 01/13/11 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 07/21/11 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND 01/16/12 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND %ug/L L 07/09/12 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/14/13 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 03/03/15 -- -- 5 ND -- ND ND ND ND ND ND ND -- -- ND ug/L 08/12/15 0.45 -- 5 ND -- ND ND ND ND ND ND ND -- - ND 02/17/16 0.45 -- 5 ND -- ND ND ND ND 0.71 J ND ND -- -- ND %ug/L L 07/14/16 0.45 -- 5 ND -- ND ND ND ND 0.50 J ND ND -- -- ND 01/11/17 0.45 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND %ug/L L 07/11/17 0.45 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND 01/09/18 0.45 -- 5 ND -- ND ND ND ND ND ND ND ND ND ND %ug/L L 07/26/18 0.45 3.0 -- ND -- ND ND ND ND ND ND ND ND ND ND 01/30/19 0.45 3.0 -- ND -- ND ND ND ND 0.51 J ND ND ND ND ND %ug/L L 07/10/19 0.45 3.0 -- ND -- ND ND ND ND ND ND ND ND 0.64 J ND ug/L 01/29/20 0.45 3.0 -- ND -- ND ND ND ND ND ND ND 0.46 J ND ND ug/L 07/07/20 0.45 3.0 -- ND -- 1.2 J ND ND ND ND ND ND ND 0.47 J ND 01/19/21 0.45 3.0 -- ND -- ND ND ND ND ND ND ND ND ND ND %ug/L L 08/18/21 0.45 3.0 -- -- -- ND -- ND ND ND -- ND ND -- ND 08/30/21 0.45 3.0 -- ND -- -- ND -- -- -- ND -- -- ND ND %ug/L L 01/26/22 0.45 3.0 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 07/06/22 0.45 3.0 - ND - 2.8 J ND ND ND ND ND ND ND ND ND u /L 01/23/23 0.45 3.0 ND ND ND ND ND ND ND ND ND ND ND 1,4-Diomne ug/L 07/26/18 1.2 2.0 ND 67 ND 1.5 J 14 210 ND 25 16 180 ND NC 2L = 3 ug/L ug/L 01/30/19 1.2 2.0 -- ND -- 29 ND 1.3 J 3.4 290 ND 35 20 97 ND No EPA MCL ug/L 07/10/19 1.2 2.0 - ND - 92 ND 1.4 J 4.8 260 1.3 J 28 13 140 ND ug/L 01/29/20 0.8 2.0 -- ND -- 33 ND 0.93 J 9.8 220 1.8 J 32 25 45 ND ug/L 07/07/20 0.8 2.0 - ND - 71 ND 1.8 J 8.9 240 3.5 34 25 110 ND ug/L 01/19/21 0.8 2.0 -- ND -- 50 ND 2.2 3.0 200 5.8 43 35 69 ND ug/L 08/18/21 0.8 2.0 - - - 110 -- 5.3 10 260 -- 60 37 - ND ug/L 08/30/21 0.8 2.0 -- 1.4 J -- -- 1.3 J -- -- -- 12 -- -- 150 ND ug/L 01/26/22 0.8 2.0 - 2.8 B -- 71 3.1 B 4.8 B 6.6 B 210 16 B 61 49 22 B 6.5 ug/L 07/06/22 0.8 2.0 -- ND -- 76 0.93 J 3.5 10 170 18 54 20 92 ND u /L 01/23/23 0.32 0.5 ND 41 2.3 2.3 1.5 140 23 58 23 54 ND Tetrahydrofuran ug/L 01/13/11 -- -- -- ND -- ND ND ND ND 6.2 ND ND -- -- ND NC 2L=2000 ug/l. ug/L 07/21/11 -- -- - ND - ND ND ND ND 21 ND ND - - ND No EPA MCL ug/L 01/16/12 -- -- -- ND -- ND ND ND ND 61 ND ND -- -- ND 07/09/12 -- -- - ND - ND ND ND ND 30 ND ND - - ND %ug/L L 01/14/13 -- -- -- ND -- 0.95 J ND ND ND 22 ND ND -- -- ND ug/L 07/09/13 -- -- - ND - ND ND ND ND ND ND ND - - ND ug/L 01/30/14 -- -- -- ND -- ND ND ND ND 8.1 ND ND -- -- ND ug/L 07/0114 -- -- - ND - 3.3 ND ND ND 14 ND ND -- - ND ug/L 03/03/15 0.80 -- -- ND -- 1.4 ND ND ND 6.3 ND ND -- -- ND ug/L 08/12/15 0.80 -- - 2.8 - ND 1.5 ND ND 25 ND ND -- - ND ug/L 02/17/16 0.80 -- -- ND -- ND ND ND ND ND ND ND -- -- ND ug/L 07/14/16 0.80 -- - ND - ND ND ND ND 5.6 ND ND -- - ND ug/L 01/11/17 0.80 -- -- ND -- ND ND ND ND 15 ND ND ND 36 ND ug/L 07/11/17 0.80 -- - ND - ND ND ND ND 21 ND 2.2 J ND 18 ND ug/L 01/09/18 0.53 -- -- ND -- 12 ND ND ND 50 ND ND 0.65 J 85 ND ug/L 07/26 8 0.53 1 - ND - 0.77 J ND ND ND 66 ND ND ND 130 ND ug/L 01/30/19 0.53 1 -- ND -- ND ND ND ND 99 ND ND ND 31 4.4 ug/L 07/10/19 0.53 1 - ND - 38 ND ND ND 98 ND 6.8 1.4 47 ND ug/L 01/29/20 0.53 1 -- ND -- ND ND ND ND 81 ND ND ND 15 ND ug/L 07/07/20 0.53 1 - ND - ND ND ND ND 89 ND ND ND 57 ND ug/L 01/19/21 0.53 1 -- ND -- ND ND ND ND ND ND ND ND ND ND ug/L 08/18/21 0.53 1 - - - ND -- ND ND 150 -- 69 ND - ND ug/L 08/30/21 0.53 1 -- ND -- -- ND -- -- -- ND -- -- 88 ND ug/L 01/26/22 0.53 1 - ND - ND ND ND ND 110 ND ND ND 19 ND ug/L 07/06/22 0.53 1 -- ND -- 11 ND ND ND 130 ND 16 ND 130 ND u /L 01/23/23 0.53 1 ND ND ND ND ND 99 ND ND ND 54 ND ►►�� 8 of9 April 2023 31405795.004 TABLE 4 Summary of Detected Constituents in Groundwater Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Reporting SWS Upgradienl Downgradient Parameter Units Sample Date MDL MRL Re ortin Blanks VW-11P- 3 MW-2 MW-3 MW-4S MW-5 MW-6 MW-7S MW-8 AMW-1 AMW-2 Chloride mg/L 01/16/07 -- -- -- 11.0 -- 13.0 4.0 7.0 19.0 16.0 4.0 11.0 -- -- -- NC 2L = 250 mg/L mg/L 07/02/07 -- -- -- 5.2 -- 6.9 2.8 B 7.0 9.0 9.3 3.3 6.7 -- -- 0.57 EPA MCL = 250 ug/L* mg/L 01/30/08 -- -- -- 6.5 -- 10 3.3 J 10 16 15 3.3 J 9.4 -- -- ND mg/L 07/17/08 -- -- -- 8.0 -- 14 4.3 B 9.8 21 14 3.9 B 8.4 -- -- 1.3 mg/L 01/14/09 -- -- -- 7.2 -- 6.9 1.8 J 5.0 12 14 -- - -- -- ND mg/L 07/16/09 -- -- -- 8.4 -- 12 5.3 12 17 15 -- - -- -- NO mg/L 01/04/10 -- -- -- 9.7 -- 8.0 6.4 7.4 10 20 5.0 7.0 -- -- ND mg/L 07/01/10 -- -- -- 9.9 -- 10 5.5 7.7 10 40 5.1 7.2 -- -- NO mg/L 01/13/11 -- -- -- 10 -- 24 5.8 12 11 41 4.9 J 7.7 -- -- ND mg/L 07/21/11 -- -- -- 12 -- 30 3.8 B 13 14 47 4.5 B 8.2 -- -- 1.5 mg/L 01/16/12 -- -- -- 13 -- 21 4.1 6.9 7 63 4.7 8.8 -- -- ND mg/L 07/09/12 -- -- -- 14 -- 24 4.0 B 11 14 66 4.8 B 11 -- -- 1.4 mg/L 01/14/13 -- -- -- 14 -- 61 5.3 B 12 5.8 B 55 4.9 B 12 -- -- 1.4 J mg/L 07/09/13 -- -- -- 15 -- 61 4.2 J 7.5 7.1 46 5.3 14 -- -- NO mg/L 01/30/14 -- -- -- 14 -- 48 6.6 7.2 3.5 55 5.3 19 -- -- ND mg/L 07/O114 -- -- -- 16 -- 120 6.3 8.6 9.1 63 5.5 28 -- -- NO mg/L 03/03/15 2.2 -- -- 16 -- 130 6.5 5.7 3.2 J 71 5.6 42 -- -- ND mg/L 08/12/15 2.2 -- -- 21 -- 150 5.3 14 11 76 6.2 32 -- -- NO J mg/L 02/17/16 2.2 -- -- 17 -- 110 15 7.1 4.2 J 100 5.2 40 -- -- ND mg/L 07/14/16 2.2 -- -- 22 -- 140 9.1 13 11 110 6.2 57 -- -- NO mg/L 01/11/17 2.2 -- -- 22 -- 220 8.4 19 3.9 J 120 5.9 66 34 75 ND mg/L 07/11/17 2.2 -- -- 22 -- 110 5.8 12 4.3 J 130 5.9 83 17 68 NO mg/L 01/09/18 2.2 -- -- 21 -- 210 9.4 23 17 160 6.2 96 45 140 ND mg/L 07/26/18 2.2 5 -- 17 -- 200 6.1 16 13 180 6.5 110 46 140 NO mg/L 01/30/19 12 5 -- 18 -- 73 20 10 3.8 J 180 7.2 120 46 61 ND mg/L 07/10/19 2.2 5 -- 18 -- 190 12 13 8.0 210 7.9 110 39 130 NO mg/L 01/29/20 2.2 5 -- 20 -- 94 10 12 5.4 200 12 140 81 52 ND mg/L 07/07/20 2.2 5 -- 17 -- 180 12 15 6.4 220 15 130 73 130 NO mg/L 01/19/21 2.2 5 -- 16 -- 130 12 14 3.3 J 210 24 160 96 76 ND mg/L 08/18/21 2.2 5 -- 17 -- 200 10 20 12 220 38 150 100 - ND mg/L 08/30/21 2.2 5 -- -- -- -- -- -- -- -- -- -- -- 150 ND mg/L 01/26/22 2.2 5 -- 22 -- 170 13 17 3.6 J 200 54 180 140 54 ND mg/L 07/06/22 2.2 5 -- 16 -- 200 8.9 B 29 9.0 B 210 69 180 62 110 2.2 J mg/L 01/23/23 2.2 5 15 110 14 17 2.7 160 82 170 72 73 ND Total Dissolved Solids mg/L 01/16/07 -- -- -- 214 -- 180 68 82 280 212 236 236 -- -- -- NC 2L = 500 mg/L mg/L 07/02/07 -- -- -- 190 -- 180 74 82 200 260 150 200 -- -- ND EPA MCL = 500 ug/L* mg/L 01/30/08 -- -- -- 210 -- 200 100 110 410 310 180 240 -- -- ND mg/L 07/17/08 -- -- -- 220 -- 270 54 90 280 220 140 190 -- -- ND mg/L 01/14/09 -- -- -- 240 -- 190 100 100 320 240 -- -- -- -- ND mg/L 07/16/09 -- -- -- 240 -- 360 110 120 260 280 -- -- -- -- ND mg/L 01/04/10 -- -- -- 280 -- 230 86 82 260 310 160 210 -- -- ND mg/L 07/01/10 -- -- -- 270 -- 310 86 96 250 480 190 240 -- -- ND mg/L 01/13/11 -- -- -- 220 -- 330 190 150 280 490 190 220 -- -- ND mg/L 07/21/11 -- -- -- 260 -- 370 48 120 320 520 190 230 -- -- ND mg/L 01/16/12 -- -- -- 300 -- 300 98 94 280 560 180 250 -- -- ND mg/L 07/09/12 -- -- -- 330 -- 550 96 140 270 760 230 340 -- -- ND mg/L 01/14/13 -- -- -- 350 -- 580 120 130 290 670 200 370 -- -- ND mg/L 07/09/13 -- -- -- 350 -- 530 64 70 230 600 190 360 -- -- ND mg/L 01/30/14 -- -- -- 350 -- 500 88 130 180 660 210 400 -- -- ND mg/L 07/08/14 -- -- -- 360 -- 910 66 110 230 750 210 460 -- -- ND mg/L 03/03/15 10 -- -- 390 -- 770 56 56 120 860 210 510 -- -- ND mgI 08/12/15 50 -- -- 370 -- 1200 ND 130 200 860 210 360 -- -- ND mg/L 02/17/ 6 50 -- -- 430 -- 810 110 too 150 1100 240 450 -- -- ND mg/L 07/14/16 50 -- -- 390 -- 940 72 90 220 1100 250 470 -- - ND mg/L 01/11/17 50 -- -- 430 -- 1600 86 120 210 1300 280 540 240 550 ND mg/L 07/11/17 50 -- -- 390 -- 1100 ND 110 130 1300 290 700 190 620 ND mg/L 01/09MS 50 -- -- 43 -- 1700 ND 86 190 1500 250 810 280 1100 ND mg/L 07/26/18 50 50 -- 380 -- 1700 54 120 190 1500 260 880 400 1000 ND mg/L 01/30/19 50 50 -- 440 -- 740 120 65a 110 1600 300 910 490 570 ND mg/L 07/10/19 50 50 -- 410 -- 1800 82 76 180 2100 300 910 330 1200 ND mg/L 01/29/20 50 50 -- 420 -- 1000 96 80 160 2100 340 1100 750 540 ND mg/L 07/07/20 50 50 -- 420 -- 1700 110 130 140 2300 390 1000 730 1200 ND mg/L 01/19/21 50 50 -- 450 -- 1400 110 110 120 2300 450 1200 970 760 ND mg/L 08/18/21 50 50 -- 400 -- 1900 82 110 220 2400 520 1200 350 - ND mg/L 08/30/21 50 50 -- -- -- -- -- -- -- -- -- -- -- 1400 ND mg/L 01/26/22 50 50 -- 400 -- 1700 58 ND 110 1900 550 1300 1100 420 ND mg/L 07/06/22 50 50 -- 430 -- 2000 68 140 200 2000 690 1.0. 620 1100 ND mg/L 01/23/23 50 50 410 1200 160 840 120 1700 140 1500 840 810 ND Sulfate as SO4 mg/L 01/16/07 -- -- -- 48.4 -- 44.3 7.03 B 33.4 41.7 51.2 24.0 13.6 -- -- 2.25 NC 2L = 250 mg/L mg/L 07/02/07 -- -- 250 39 - 25 6.4 19 25 69 11 10 -- - ND EPA MCL = 250 ug/L* mg/L 01/30/08 -- -- 250 35 J -- 24 J 5.9 J 23 J 79 J 26 J 10 J 9.2 J -- -- ND mg/L 07/17/08 -- -- 250 62 J - 41 J 8.9 J 23 J 39 J 73 J 14 J 14 J -- - ND mg/L 01/14/08 -- -- 250 66 J -- 54 J 11 J 21 J 24 J 73 J -- -- -- -- ND mg/L 07/16/09 -- -- 250 74 J - 36 J 8.3 J 33 J 33 J 100 -- -- -- - ND mg/L 01/04/10 -- -- 250 95 J -- 37 J 11 J 26 J 25 J 110 J 12 J 19 J -- -- ND mg/L 07/01/10 -- -- 250 93 J - 41 J 9.6 J 27 J 22 J 150 J 13 J 23 J -- - ND mg/L 01/13/11 -- -- 250 99 J -- 42 J 10 J 44 J 13 J 140 J 14 J 36 J -- -- ND mg/L 07/21/11 -- -- 250 110 J - 66 J 8.3 J 40 J 25 J 140 J 15 J 46 J -- - ND mg/L 01/16/12 -- -- 250 100 J -- 55 J 9.1 J 23 J 13 J 130 J 18 J 50 J -- -- ND mg/L 07/09/12 -- -- 250 110 J - 26 J 7.9 J 40 J 31 J 190 J 20 J 56 J -- - ND mg/L 01/14/13 -- -- 250 120 J -- 55 J 13 J 58 J 9.6 J 190 J 23 J 62 J -- -- ND mg/L 07/09/13 -- -- 250 140 J - 55 J 8.6 J 37 J 17 J 180 J 24 J 71 J -- - 1.6 mg/L 01/30/14 -- -- 250 160 J -- 68 J 15 J 52 J 6.4 J 200 J 28 J 67 J -- -- ND mg/L 07/O8/14 -- -- 250 150 J - 45 J 11 J 49 J 26 J 210 J 28 J 87 J -- - ND mg/L 03/03/15 2.9 -- 250 170 J -- 57 J 11 J 31 J 13 J 270 35 J 92 J -- -- ND mg/L 08/12/15 2.9 -- 250 160 J - 26 J 8.6 J 71 J 19 J 210 J 35 J 54 J -- - ND mg/L 02/17/i6 2.9 -- 250 200 J -- 34 J 15 J 31 J 14 J 200 J 38 J 54 J -- -- ND mg/L 07/1Z 6 2.9 -- 250 210 J - 73 J 10 J 56 J 28 J 240 J 45 J 53 J -- -- ND mg/L 01/11/17 2.9 -- 250 210 J -- 27 J 9.6 J 43 J 8.3 J 220 J 43 J 51 J 56 J 120 J ND mg/L 07/11/17 2.9 -- 250 220 - 22 J 9.9 J 39 J 11 J 150 J 46 J 54 J 34 J 99 J ND mg/L 01/09/18 2.9 -- 250 220 J -- 23 J 8.6 J 41 J 36 J 130 J 47 J 60 J 71 J 150 J ND mg/L 07/26/18 2.9 5 - 210 - 13 8.9 48 29 130 46 58 36 98 ND mg/L 01/30/19 2.9 5 -- 230 -- 42 12 19 9.6 82 45 61 49 41 ND mg/L 07/10/19 2.9 5 - 220 - 20 12 31 30 62 42 61 39 75 ND mg/L 01/29/20 2.9 5 -- 200 -- 44 12 27 14 52 41 63 54 39 ND mg/L 07/07/20 2.9 5 - 200 - 20 11 30 14 47 41 60 38 55 ND mg/L 01/19/21 2.9 5 -- 200 -- 22 13 22 10 43 43 53 33 37 ND mg/L 08/18/21 2.9 5 - 190 - 12 11 31 49 37 43 58 40 - ND mg/L 08/30/21 2.9 5 -- -- -- -- __ __ __ _ __ 66 ND mg/L 01/26/22 2.9 5 - 200 - 23 8.7 22 16 47 48 70 39 30 ND mg/L 07/06/122 2.9 5 -- 200 -- 13 9.9 41 35 60 53 68 46 52 ND mg/L 01/23/23 2.9 5 190 39 9.7 26 14 61 46 65 46 32 ND Total Alkalinity mg/L 01/16/07 -- -- -- 39 -- 53 5.0 25 17 160 100 170 -- -- -- No NC 2L Standard mg/L 07/02/07 -- - - 20 - 100 46 12 110 100 99 160 -- - ND No EPA MCL mg/L 01/30/08 -- -- -- -- __ __ __ _ - 310 __ __ __ ND mg/L 01/30/08 -- - - 17 - 81 32 ND -- 89 100 170 -- - ND mg/L 07/17/08 -- -- -- 22 B -- 210 30 19 B 180 68 100 150 -- -- 4.8 mg/L 01/14/09 -- -- - 25 - 88 32 5.6 J 180 42 -- -- -- - ND mg/L 07/16/09 -- -- -- 17 -- 150 34 ND 160 59 -- -- -- -- ND mg/L 01/04/10 -- -- - 43 - 180 51 24 100 76 110 160 -- - ND mg/L 07/01/10 -- -- -- 29 -- 200 31 13 J 170 85 110 130 -- -- ND mg/L 01/13/11 -- -- -- 23 -- 230 29 ND 210 140 110 130 -- -- ND mg/L 07/21/11 -- -- -- 25 -- 170 30 12 J 220 140 110 110 -- -- ND mg/L 01/16/12 -- -- -- 26 -- 160 28 ND 190 170 110 120 -- -- ND mg/L 07/09/12 -- -- -- 23 -- 280 31 13 130 200 120 150 -- -- ND mg/L 01/14/13 -- -- -- 20 -- 280 32 ND 190 190 130 170 -- -- ND mg/L 07/09/13 -- -- -- 29 -- 260 32 ND 100 160 130 190 -- -- ND mg/L 01/30/14 -- -- -- 23 -- 250 32 NO 140 210 140 200 -- -- ND mg/L 07/08/14 -- -- -- 29 -- 500 41 22 110 270 150 230 -- -- ND mg/L 03/03/15 14 -- -- 30 -- 440 33 NO 110 310 150 270 -- -- ND mg/L 08/12/15 14 -- -- 20 -- 730 36 17 180 330 150 220 -- -- ND mg/L O2/17/16 14 -- -- 23 -- 480 39 NO 950 510 160 250 -- - ND mg/L 07/14/16 70 -- -- 23 -- 550 33 15 130 560 170 290 -- - ND mg/L 01/11/17 14 -- -- 27 -- 990 33 NO 190 640 170 320 78 200 ND mg/L 07/11/17 14 -- -- 22 -- 680 26 17 100 790 180 380 98 300 ND mg/L 01/09/18 14 -- -- 24 -- 1200 32 NO 120 940 180 510 100 590 ND mg/L 07/296 8 14 15 -- ND -- 1100 32 23 120 920 180 500 190 590 ND mg/L 01/30/19 14 15 -- ND -- 480 47 NO 110 1100 180 550 280 350 ND mg/L 07/10/19 14 15 -- ND -- 1100 36 ND 88 1400 200 480 170 740 ND mg/L 01/29/20 14 15 -- ND -- 610 33 14 J 72 1500 240 610 370 330 ND mg/L 07/07/20 14 15 -- ND -- 1300 30 ND 86 1600 270 600 450 760 ND mg/L 01/19/21 14 15 -- 14 J -- 1000 39 ND 77 1600 310 680 700 420 ND mg/L 08/18/21 14 15 -- 22 -- 1500 30 23 130 1800 360 660 450 - ND mg/L 08/30/21 14 15 -- -- -- -- -- -- -- -- -- -- -- 980 ND mg/L 01/26/22 14 15 -- 18 -- 1300 45 ND 88 1600 420 850 780 270 ND mg/L 07/06/22 14 15 -- 22 -- 1500 28 22 120 1500 470 840 380 800 ND m /L 01/23/23 2.2 5 25 970 60 21 80 1200 560 890 600 560 ND Notes: 1. MW = groundwater monitorinq well 2. ug/L = microgrems per liter 3. mg/L = milligrams per liter 4. J = Prior to the 07/18 event, J flags are estimated values below the SWS Reporting limit. Beginning with the 07/18 event, J Flags are estimated values between MDL and POL. 5. B = blank -qualified data 6. ND = not detected at or above the stated reporting limit 7. Standards = NC 2L Groundwater Standards or North Carolina Solid Waste Section Groundwater Protection Standards 8. -- = no data available 9. Bolded = Concentrations above the current NC 2L Groundwater Standards or Solid Waste Section Groundwater Protection Standards (SWS GPS) have been bolded. 10. Shaded = Concentrations above the current EPA Maximum Contaminate Level (MCL) have been shaded. 11. Blanks = Field, trip, and laboratory blanks. 12. SWS Reporting Limit = NCPOL prior to 2007 and NCSWSL starting in 01/18/07 13. # = EPA Action Level 14. * = EPA Secondary MCL 15. Data prior to 01/09/06 provided by Joyce Engineering, Inc. 16. P-3 added as an additional upgredient well for Appendix 1 metals sampling as of 07/10/19 17. Data in parentheses are re-analsyes results. 18. The following dilutions were noted for the January 2023 event: 1,4-Dioxane (10x) at MW-2, MW-6, MW-7S, MW-8, AMW-1, AMW-2; Selenium (10x) at MW-8; Silver (10x) at MW-8; Manganese (10x) at MW-8. ►►�� 9 Of April 2023 TABLE 5 31405795.004 Summary of Field Parameters in Groundwater Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Upgradient Downgradient Parameter Reporting Sample Ill P3 Ill MW-3 Ill MW-5 Ill MW-7S MW-8 AMW-1 AMW-2 Units Date pH (Field) S.U. 07/06/05 6.47 - 5.44 6.00 5.85 5.88 6.42 - -- -- -- S.U. 01/09/06 5.96 - 5.76 6.37 6.02 6.27 6.10 - -- -- -- S.U. 07/12/06 6.20 - 5.64 6.10 5.70 6.38 6.85 - -- S. J. 01/16/07 7.35 - 6.82 6.88 6.61 6.22 6.59 6.74 7.20 -- -- S.U. 07/02/07 7.47 - 7.24 7.14 6.77 7.13 7.40 7.30 7.13 -- -- S.U. 01/30/08 5.78 - 5.51 5.92 5.34 6.29 6.25 6.58 7.35 -- -- S.U. 07/17/08 5.75 - 5.75 5.70 5.86 6.05 5.91 6.47 7.23 -- -- S.U. 01/14/09 5.77 - 5.64 5.60 5.11 6.28 5.45 - -- S. J. 07/16/09 5.64 - 5.85 5.59 5.30 6.04 5.96 - -- - -- S.U. 01/04/10 5.49 - 5.59 5.36 4.73 6.08 6.05 6.30 6.96 - -- S.U. 07/01/10 5.53 - 5.72 5.37 5.22 5.96 5.49 6.34 6.48 - -- S.U. 01/13/11 5.54 - 5.80 5.57 5.24 5.96 6.28 6.45 6.52 - -- S.U. 07/21/11 5.27 - 5.50 5.10 5.02 6.02 5.84 6.22 6.00 - -- S.U. 01/16/12 5.59 - 5.76 5.59 5.11 6.26 5.79 6.43 6.36 - -- S.U. 07/09/12 5.92 - 6.12 5.53 5.57 6.20 6.45 6.60 6.30 - -- S.U. 01/14/13 5.47 - 6.00 5.78 5.45 6.11 6.41 6.44 6.29 - -- S.U. 07/09/13 5.02 - 5.40 4.83 4.60 5.97 5.67 5.56 5.70 - -- S.U. 01/30/14 5.58 - 6.04 5.75 5.48 6.35 6.42 6.44 6.30 - -- S.U. 07/08/14 5.63 - 6.32 5.86 5.72 6.42 6.60 6.62 6.27 - -- S.U. 03/03/15 5.49 - 6.23 5.88 5.50 6.39 6.61 6.50 6.18 - -- S.U. 08/12/15 5.66 - 6.08 5.37 5.54 5.98 6.54 6.03 6.10 - -- (Verification Event) S.U. 09/28/15 -- - 6.31 - -- - -- - -- - -- S.U. 02/17/16 5.25 - 6.32 5.22 5.06 6.07 6.25 6.16 6.38 - -- S.U. 07/14/16 5.19 - 5.87 5.17 5.06 5.81 6.15 5.97 5.89 - -- (Verification Event) S.U. 08/04/16 -- - 5.97 - -- - 6.16 - -- - -- S. J. 01/01/17 4.95 - 6.15 4.92 4.84 5.67 6.47 5.77 6.03 6.00 5.88 S.U. 07/11/17 5.30 - 6.14 5.11 4.96 5.91 6.32 5.94 6.00 6.06 5.90 S.U. 01/09/18 5.56 - 6.41 5.67 5.49 5.98 6.59 6.41 6.37 6.08 6.19 (Verification Event) S.U. 03/16/18 -- - -- - -- - -- - 6.22 - 6.13 S.U. 07/26/18 5.45 - 6.27 5.56 5.79 6.11 6.49 6.34 6.11 6.09 6.07 (Verification Event) S.U. 09/10/18 -- - 6.33 - -- - -- - 5.98 - 6.08 S.U. 01/30/19 5.63 - 6.51 5.82 5.54 6.41 6.50 6.49 6.18 6.32 6.26 S.U. 07/10/19 5.41 5.40 6.34 5.49 5.28 6.32 6.48 6.23 6.10 6.16 6.20 (Verification Event) S.U. 10/04/19 -- - -- - -- - -- - -- - 6.12 S.U. 01/29/20 5.55 5.51 6.75 5.67 5.73 6.24 6.73 6.38 6.34 6.45 6.37 S.U. 07/07/20 5.26 5.31 6.50 5.47 5.26 6.14 6.40 6.27 6.10 6.45 6.22 S.U. 01/19/21 5.57 5.45 6.62 5.68 5.21 6.17 6.70 6.26 6.29 6.49 6.39 (Verification Event) S.U. 02/24/21 -- - -- - -- - -- - 6.23 6.47 -- S. J. 08/16/21 5.73 5.83 6.91 6.45 6.21 7.02 6..88 6.53 7.71 7.05 -- S. J. 08/30/21 5.50 - -- 5.68 -- - 6.55 6.30 -- - 6.46 S.U. 01/26/22 5.40 5.60 6.74 5.68 5.30 6.15 6.83 6.14 6.33 6.50 6.48 S.U. 07/05/22 5.24 5.28 6.49 5.30 5.21 5.86 6.53 6.04 6.04 6.33 6.25 S.U. 01/23/23 5.23 6.65 6.70 6.06 5.68 6.34 6.73 6.35 6.12 6.62 6.58 Specific Conductance US/cm 07/06/05 253 - 222 178 168 313 520 - -- - -- (Field) us/cm 01/09/06 146 -- 164 82 81 334 142 - -- - -- us/cm 07/12/06 235 -- 222 118 215 363 367 - -- - -- us/cm 01/16/07 224 - 279 850 110 497 226 268 374 - -- us/cm 07/02/07 234 - 330 131 125 355 413 261 384 - -- us/cm 01/30/08 317 - 411 269 346 999 595 318 505 - -- us/cm 07/17/08 266 - 528 105 153 510 376 248 360 - -- us/cm 01/14/09 279 - 319 109 95 588 337 - -- - -- us/cm 07/16/09 288 - 547 122 160 460 424 - -- - -- us/cm 01/04/10 371 - 429 130 124 561 510 257 371 - -- us/cm 07/01/10 318 - 466 101 123 465 631 235 302 - -- us/cm 01/13/11 327 - 578 118 189 454 700 251 344 - -- us/cm 07/21/11 408 - 589 101 198 595 769 280 382 - -- us/cm 01/16/12 369 - 432 97 102 460 815 269 367 - -- us/cm 07/09/12 341 - 675 90 152 337 943 246 412 - -- us/cm 01/14/13 334 - 659 107 166 382 722 247 388 - -- us/cm 07/09/13 468 - 847 102 154 432 864 311 551 - -- us/cm 01/30/14 530 - 915 156 209 443 1072 367 649 - -- us/cm 07/08/14 506 - 1502 138 207 425 1066 356 717 - -- us/cm 03/03/15 570 - 1344 133 128 330 1356 312 820 - -- us/cm 08/12/15 458 - 1600 94 220 401 1120 332 559 - -- Verification Event us/cm 09/28/15 -- - 1845 - -- - -- - -- - -- us/cm 02/17/16 554 - 1363 165 134 316 1507 380 731 - -- us/cm 07/14/16 570 - 1530 135 209 408 1710 411 800 - -- Verification Event us/cm 08/04/16 -- - 900 - -- - 1730 - -- - -- us/cm 01/01/17 529 - 2040 119 188 406 1560 387 750 351 800 us/cm 07/11/17 608 - 1563 113 178 350 1820 436 1113 334 887 us/cm 01/09/18 621 - 2701 142 223 407 2360 458 1292 528 1647 Verification Event us/cm 03/16/18 -- - -- - -- -- -- - 1306 - 933 us/cm 07/26/18 576 - 2720 108 225 385 2450 444 1251 670 1521 Verification Event us/cm 09/10/18 -- - 2079 - -- - -- - 1287 - 1158 us/cm 01/30/19 582 - 1210 193 127 275 260 467 1407 858 905 us/cm 07/10/19 520 150 2348 174 157 324 2460 451 1254 572 1561 Verification Event us/cm 10/04/19 -- - -- - -- - -- - -- - 1776 us/cm 01/29/20 463 143 1688 130 205 237 2388 431 1428 1374 998 us/cm 07/07/20 600 162 2109 140 179 261 2664 510 1378 1203 1563 us/cm 01/19/21 545 211 1610 187 169 276 2029 610 1278 1386 713 Verification Event us/cm 02/24/21 -- - -- - -- - -- - 1817 1674 -- us/cm 08/16/21 618 164 2032 163 197 380 2748 806 1449 1260 -- us/cm 08/30/21 501 - -- 107 -- - 3065 756 -- - 1955 us/cm 01/26/22 541 119 2419 157 133 280 3042 940 1852 1752 726 us/cm 07/05/22 474 150 2417 131 228 323 2423 885 1659 977 1330 uS/cm 01/23/23 550 167 2207 184 169 204 2762 1131 2272 1530 1199 Temperature (Field) °C 07/06/05 20.80 - 20.50 16.20 19.30 19.00 19.60 - -- - -- °C 01/09/06 17.86 - 14.23 15.62 13.82 16.72 14.35 - -- - -- °C 07/12/06 23.85 - 24.21 20.80 21.80 20.59 20.91 - -- - -- °C 01/16/07 15.80 - 12.10 13.80 18.80 12.50 12.00 12.20 12.50 - -- °C 07/02/07 19.65 - 18.72 17.72 18.23 18.54 17.27 16.27 18.76 - -- °C 01/30/08 16.01 - 12.32 15.12 13.19 14.84 13.01 14.34 12.35 - -- °C 07/17/08 18.58 - 17.34 17.47 17.02 19.68 20.10 17.33 17.16 - -- °C 01/14/09 15.08 - 10.34 13.80 12.34 14.24 11.14 - -- - -- °C 07/16/09 18.48 - 16.95 17.80 16.62 18.38 19.07 - -- - -- °C 01/04/10 12.50 - 10.57 12.82 10.59 14.03 11.46 12.37 10.40 - -- °C 07/01/10 18.65 - 16.14 15.30 16.12 17.55 19.93 16.11 18.97 - -- °C 01/13/11 12.86 - 11.04 13.45 11.39 13.50 10.63 12.51 9.74 - -- °C 07/21/11 19.57 - 17.91 17.25 18.02 18.06 19.68 17.72 21.63 - -- °C 01/16/12 15.62 - 11.97 14.60 13.16 14.77 12.66 14.01 11.33 - -- °C 07/09/12 19.26 - 17.83 17.60 18.80 18.57 23.63 17.25 20.90 - -- °C 01/14/13 16.81 - 13.86 15.34 13.68 15.68 14.04 15.12 14.27 - -- °C 07/09/13 18.75 - 17.51 17.16 17.14 17.54 18.92 17.16 20.77 - -- °C 01/30/14 14.7 - 10.5 12.7 11.1 13.9 10.2 13.1 10.6 - -- °C 07/08/14 19.0 - 15.8 15.2 16.1 17.6 18.9 18.8 18.9 - -- °C 03/03/15 14.2 - 9.88 12.5 10.3 12.0 9.46 13.0 9.43 - -- °C 08/12/15 18.6 - 17.5 15.1 16.3 17.6 19.3 15.8 17.1 - -- Verification Event °C 09/28/15 -- - 17.41 - -- - -- - -- - -- °C 02/17/16 14.70 - 11.9 13.8 11.4 14.4 11.6 14.8 12.8 - -- °C 07/14/16 19.0 - 16.8 17.0 17.2 18.2 21.3 17.1 21.8 - -- Verification Event °C 08/04/16 -- - 18.4 - -- - 19.3 - -- - -- °C 01/01/17 16.0 - 14.2 13.9 13.2 15.2 14.4 13.6 13.2 14.1 11.5 °C 07/11/17 19.8 - 18.3 16.8 17.6 17.7 21.1 16.7 23.1 17.0 19.0 °C 01/09/18 14.4 - 13.1 13.8 13.6 16.3 13.7 15.6 14.2 12.9 11.0 Verification Event °C 03/16/18 -- - -- - -- - -- - 13.0 - 11.0 °C 07/26/18 19.6 - 17.6 17.7 17.2 22.3 22.5 19.6 19.2 17.1 19.0 Verification Event °C 09/10/18 -- - 18.9 - -- - -- - 19.1 - 19.8 °C 01/30/19 14.0 - 11.0 13.1 11.7 12.6 10.7 12.4 12.6 12.2 9.2 °C 07/10/19 19.6 19.4 18.3 18.2 17.9 18.9 20.4 17.4 18.8 16.5 18.9 Verification Event °C 10/04/19 -- - -- - -- - -- - -- - 20.0 °C 01/29/20 13.6 14.8 12.5 13.2 11.6 13.5 12.2 13.7 11.8 12.1 10.2 °C 07/07/20 19.2 18.3 18.4 16.8 16.4 20.7 19.8 17.3 18.6 18.0 20.0 °C 01/19/21 14.3 14.9 12.7 13.5 12.6 12.2 12.6 13.6 12.1 12.2 10.5 Verification Event °C 02/24/21 -- - -- - -- - -- - 12.9 12.8 -- °C 08/16/21 19.8 18.0 18.6 17.7 18.4 19.7 20.4 17.3 18.1 18.4 -- °C 08/30/21 20.5 - -- 17.9 -- - 20.9 18.3 -- - 20.3 °C 01/26/22 13.0 14.7 11.7 12.4 12.4 12.3 10.9 11.1 12.5 10.3 10.3 °C 07/05/22 18.9 18.3 18.2 17.7 17.0 17.5 20.4 16.7 17.8 18.2 19.5 °C 01/23/23 15.6 12.2 12.0 11.7 13.2 12.0 11.5 13.7 12.6 11.1 10.6 1 of 2 April 2023 TABLE 5 31405795.004 Summary of Field Parameters in Groundwater Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Upgradient Downgradient Parameter Reporting Sample MW-1 P3 MW-2 MW-3 MW-4S MW-5 MW-6 MW-7S MW-8 AMW-1 AMW-2 Units Date Turbidity (Field) NTU 07/06/05 92.1 - 126 241 65.2 71.4 71.4 - -- -- -- NTU 01/09/06 165 - 293 48.5 55.2 28.4 130 - -- -- -- NTU 07/12/06 130 - 89.2 49.2 28 64 387 - -- -- -- NTU 01/16/07 372 - 62.5 73.3 188 497 294 >1000 130 -- -- NTU 07/02/07 222 - 521 37 146 61.2 405 >1000 66.3 -- -- NTU 01/30/08 13.7 - 15.5 3.08 44.6 56.1 6.81 64.1 58.4 -- -- NTU 07/17/08 4.48 - 0.97 1.11 18.3 45.7 2.41 7 5.21 - -- NTU 01/14/09 3.02 - 38.7 1.64 24.7 71.3 2.95 - -- - -- NTU 07/16/09 2.38 - 2.65 4.1 27.5 18.4 2.31 - -- - -- NTU 01/04/10 2.50 - 13.0 3.64 21.0 13.2 3.11 3.48 20.5 - -- NTU 07/01/10 1.58 - 25.9 1.87 5.66 3.51 2.53 3.99 1.83 - -- NTU 01/13/11 0.43 - 12.6 1.19 7.57 11.6 1.24 0.73 0.52 -- -- NTU 07/21/11 1.33 - 25.0 1.28 11.89 6.92 8.59 1.31 0.50 -- -- NTU 01/16/12 1.10 - 24.8 2.13 14.6 44.4 1.70 1.45 0.51 -- -- NTU 07/09/12 3.25 - 27.6 3.99 98.5 5.23 20.2 4.81 3.95 -- -- NTU 01/14/13 4.05 - 9.87 10.5 14.8 4.20 4.98 6.70 2.09 -- -- NTU 07/09/13 2.14 - 11.7 1.36 16.1 4.00 2.30 3.31 1.20 - -- NTU 01/30/14 2.71 - 81.0 8.48 62.8 51.3 1.03 2.71 27.5 - -- NTU 07/08/14 3.40 - 19.1 3.11 12.9 6.77 3.13 3.44 7.84 - -- NTU 03/03/15 0.63 - 26.1 1.93 21.3 363 9.97 0.83 0.80 - -- NTU 08/12/15 0.47 - 88.3 0.87 14.6 5.57 4.83 0.82 1.86 - -- Verification Event NTU 09/28/15 -- - 11.9 - -- - -- - -- - -- NTU 02/17/16 1.58 - 25.0 3.52 16.9 49.1 3.53 1.54 5.37 - -- NTU 07/14/16 0.96 - 4.31 1.53 10.3 13.6 1.96 0.95 1.02 - -- Verification Event NTU 08/04/16 -- - 10.2 - -- - 3.98 - -- - -- NTU 01/01/17 2.35 - 1.95 2.52 7.95 16.3 16.9 0.32 13.3 7.81 9.06 NTU 07/11/17 0.92 - 8.98 1.92 9.16 12.0 2.16 0.67 4.04 1.79 5.57 NTU 01/09/18 0.77 - 0.76 0.90 31.40 4.65 3.68 0.57 2.90 4.37 1.96 Verification Event NTU 03/16/18 -- - -- - -- - -- - 2.92 - 6.84 NTU 07/26/18 0.68 - 8.40 4.07 8.13 6.34 4.13 1.16 5.82 7.32 3.13 Verification Event NTU 09/10/18 -- - 2.56 - -- - -- - 3.68 - 0.78 NTU 01/30/19 2.01 - 9.97 3.83 9.10 9.89 9.95 2.39 9.90 7.55 4.17 NTU 07/10/19 3.85 9.37 3.40 3.05 9.72 9.96 4.63 3.86 0.75 3.54 4.11 Verification Event NTU 10/04/19 -- - -- - -- - -- - -- - 0.87 NTU 01/29/20 0.85 0.41 6.17 6.16 7.09 8.93 9.45 1.92 1.68 9.79 9.59 NTU 07/07/20 3.69 8.72 4.48 3.43 6.26 9.65 6.13 2.49 1.40 8.78 8.72 NTU 01/19/21 1.49 9.76 9.54 3.38 9.93 9.87 9.54 1.84 9.25 9.67 8.50 Verification Event NTU 02/24/21 -- - -- - -- - -- - 5.23 8.25 -- NTU 08/16/21 0.54 6.77 9.87 2.12 5.34 2.57 2.27 2.00 1.31 9.14 -- NTU 08/30/21 0.24 - -- 1.97 -- - 1.44 4.70 -- - 5.01 NTU 01/26/22 1.00 5.91 3.06 4.74 9.20 31.3 9.96 1.63 9.31 8.41 5.83 NTU 07/05/22 1.58 8.90 4.70 5.51 9.22 9.87 3.17 3.24 1.52 9.87 3.04 NTU 01/23/23 1.50 62.1 9.64 9.97 9.05 66.1 9.15 1.42 5.25 9.09 4.18 Oxidation Reduction mV 07/06/05 -- - -- - -- - -- - -- - -- Potential (Field) mV 01/09/06 203 - 132 129 217 78 233 - -- - -- mV 01/09/06 7.51 - 4.73 9.67 5.06 5.75 9.96 - -- - -- mV 07/12/06 140 - 179 150 211 32 144 - -- - -- mV 07/12/06 11.63 - 12.28 13.84 12.60 12.19 12.23 - -- - -- mV 01/16/07 106 - 95 65 130 64 187 63 105 - -- mV 01/16/07 9.10 - 4.90 11.20 8.60 10.50 10.90 9.70 9.80 - -- mV 01/30/08 213 - 194 177 226 -21 203 160 166 - -- mV 07/17/08 178 - -1 151 68 106 122 117 117 - -- mV 01/14/09 78.5 - 96.3 200.6 152.5 -7.8 171.1 - -- - -- mV 07/16/09 174.7 - 30.1 148.0 183.6 27.4 134.9 - -- - -- mV 01/04/10 111.1 - 62.0 153.1 192.9 -49.0 117.2 83.3 55.1 - -- mV 07/01/10 64.6 - 0.4 158.6 -73.3 -119.7 67.6 32.2 2.5 - -- mV 01/13/11 160.7 - 66.5 188.6 227.6 99.1 130.3 152.9 99.0 - -- mV 07/21/11 103.9 - 11.2 142.1 131.2 -37.6 77.7 77.9 45.7 - -- mV 01/16/12 169.2 - 40.5 179.1 249.5 -49.4 58.9 75.3 105.6 - -- mV 07/09/12 52.6 - 7.3 89.2 53.8 18.4 10.2 30.8 32.8 - -- mV 01/14/13 33.5 - 7.9 23.1 17.4 -81.7 8.7 15.0 19.1 - -- mV 07/09/13 121.4 - -10.5 107.6 105.3 -31.1 12.6 82.1 -16.7 - -- mV 01/30/14 210.2 - -60.6 131.6 190.6 -74.6 6.2 85.7 -121.9 - -- mV 07/08/14 246.9 - -55.3 193.8 143.2 -48.9 -21.4 141.7 -43.7 - -- mV 03/03/15 218.8 - -13.5 98.5 145.6 -35.1 24.3 87.9 2.7 - -- mV 08/12/15 272.1 - 27.2 181.3 149.2 -28.7 -149.4 230.8 14.0 - -- Verification Event mV 09/28/15 -- - -97.4 - -- - -- - -- - -- mV 02/17/16 297.4 - 2.7 230.1 294.6 -13.9 -14.4 149.9 -7.2 - -- mV 07/14/16 266.3 - -22.1 172.4 130.0 -20.3 -101.8 204.4 -61.3 - -- Verification Event mV 08/04/16 -- - 8.2 - -- - -43.2 - -- - -- mV 01/01/17 437.7 - -22.9 271.4 282.1 -6.1 14.8 380.6 60.4 92.1 132.6 mV 07/11/17 265.9 - -33.1 238.8 207.1 -30.1 -58.6 224.7 -14.0 50.5 42.8 mV 01/09/18 411.1 - -28.8 358.1 403.2 103.0 58.8 360.7 127.9 203.7 135.1 Verification Event mV 03/16/18 -- - -- - -- - -- - 229.8 - 242.4 mV 07/26/18 199.9 - -41.5 286.4 235.9 -7.9 21.7 347.7 111.5 55.8 116.8 Verification Event mV 09/10/18 -- - -34.9 - -- - -- - 158.0 - 102.8 mV 01/30/19 189.1 - -22.8 181.0 174.1 -23.1 -7.3 85.2 45.0 143.0 63.8 mV 07/10/19 302.8 104.4 -52.9 92.5 117.7 33.6 -12.2 361.2 177.5 104.7 34.7 Verification Event mV 10/04/19 -- - -- - -- - -- - -- - -9.8 mV 01/29/20 141.6 185.3 -51.9 161.4 260.1 -162.2 61.5 146.6 236.1 -22.6 241.0 mV 07/07/20 245.2 535.5 -98.5 147.0 152.8 -73.1 -70.3 115.4 -62.3 -56.9 -30.6 mV 01/19/21 202.0 102.3 -83.0 74.6 86.9 -66.1 -77.5 71.8 -54.8 -52.1 -42.7 Verification Event mV 02/24/21 -- - -- - -- - -- - -61.2 -68.6 -- mV 08/16/21 249.5 253.3 -60.0 219.1 153.0 -47.5 -63.8 151.7 -10.2 -23.9 -- mV 08/30/21 228.8 - -- 217.2 -- - -56.8 141.5 -- - -10.9 mV 01/26/22 122.9 144.7 -73.4 32.2 140.0 -43.3 -36.3 188.9 7.1 -45.4 55.9 mV 07/05/22 197.7 215.9 -119.2 192.2 197.5 -16.2 -77.7 121.0 -64.0 -36.4 -22.4 mV 01/23/23 330.1 283.3 -65.4 -234.0 -219.5 -246.2 -181.3 222.2 -10.1 -19.9 -195.7 Dissolved Oxygen (Field) mg/L 01/30/08 3.83 - 5.13 5.56 2.52 3.48 5.34 6.40 3.27 - -- mg/L 07/17/08 4.55 - 0.54 4.58 0.36 1.81 5.61 5.78 1.50 - -- mg/L 01/14/09 5.86 - 4.45 6.24 3.24 2.12 2.43 - -- - -- mg/L 07/16/09 4.79 - 0.99 4.31 1.05 1.60 4.66 - -- - -- mg/L 01/04/10 5.21 - 0.94 5.39 1.72 1.54 6.53 6.05 3.02 - -- mg/L 07/01/10 4.37 - 0.49 5.49 0.80 1.18 0.93 6.20 1.11 - -- mg/L 01/13/11 5.19 - 0.92 3.62 4.96 1.54 5.01 5.80 2.60 - -- mg/L 07/21/11 5.64 - 0.69 3.96 1.16 2.31 1.17 5.51 1.33 - -- mg/L 01/16/12 4.63 - 1.18 4.64 1.03 0.20 0.69 5.18 2.38 - -- mg/L 07/09/12 4.67 - 0.54 3.99 0.62 0.54 1.92 5.02 0.93 - -- mg/L 01/14/13 4.78 - 0.38 3.22 0.82 1.02 3.71 5.08 0.78 - -- mg/L 07/09/13 4.68 - 3.30 4.79 1.88 2.07 1.80 6.19 3.42 - -- mg/L 01/30/14 3.95 - 0.23 5.16 0.80 0.38 2.39 4.15 0.35 - -- mg/L 07/08/14 4.14 - 0.44 5.60 0.46 0.61 0.61 5.09 0.84 - -- mg/L 03/03/15 3.41 - 2.77 4.21 4.60 0.73 3.33 5.53 0.86 - -- mg/L 08/12/15 3.52 - 0.76 3.68 1.00 0.62 0.58 4.00 0.39 - -- Verification Event mg/L 09/28/15 -- - 0.85 - -- - -- - -- - -- mg/L 02/17/16 4.04 - 1.53 6.05 1.51 1.05 0.75 3.76 1.21 - -- mg/L 07/14/16 3.43 - 1.40 4.90 0.45 2.81 1.30 3.95 0.75 - -- Verification Event mg/L 08/04/16 -- - 1.61 - -- - 0.36 - -- - -- mg/L 01/01/17 3.73 - 0.65 3.00 0.60 2.46 0.43 4.23 0.50 0.30 0.73 mg/L 07/11/17 3.37 - 1.41 3.94 0.62 0.75 0.16 3.95 1.49 0.19 0.22 mg/L 01/09/18 4.61 - 1.52 2.21 2.87 0.44 2.52 3.17 0.24 0.30 0.21 Verification Event mg/L 03/16/18 -- - -- - -- - -- - 1.51 - 0.25 mg/L 07/26/18 3.52 - 0.17 4.96 0.84 0.53 1.21 3.58 0.61 0.10 0.23 Verification Event mg/L 09/10/18 -- - 1.07 - -- - -- - 0.38 - 0.36 mg/L 01/30/19 3.88 - 1.73 3.99 0.78 0.15 0.51 3.31 0.60 0.16 0.34 mg/L 07/10/19 3.42 1.96 3.06 3.67 0.86 0.34 0.27 2.97 1.15 1.51 0.33 Verification Event mg/L 10/04/19 -- - -- - -- - -- - -- - 0.21 mg/L 01/29/20 3.42 0.66 1.16 4.13 1.91 0.20 0.18 1.99 0.35 0.21 1.24 mg/L 07/07/20 3.43 0.33 1.11 5.37 0.95 0.23 0.39 1.05 0.39 0.31 0.31 mg/L 01/19/21 3.21 0.63 0.18 3.37 1.40 0.41 0.17 0.51 0.54 0.48 0.24 Verification Event mg/L 02/24/21 -- - -- - -- - -- - 5.79 1.66 -- mg/L 08/16/21 2.93 0.33 0.95 3.58 0.26 0.26 0.26 0.52 0.18 1.89 -- mg/L 08/30/21 6.90 - -- 4.20 -- - 0.09 1.89 -- - 1.39 mg/L 01/26/22 6.00 3.30 2.16 1.61 0.96 0.13 0.07 0.52 1.12 0.22 1.28 mg/L 07/05/22 2.78 0.26 0.11 2.45 0.22 0.17 0.12 0.23 0.13 0.72 1.31 m /L 01/23/23 3.12 1.89 3.91 0.53 0.69 0.25 0.23 2.36 0.11 1.01 2.36 Notes: 1. MW = groundwater monitoring well 2. mg/L = milligrams per liter 3. S.U. = Standard Units 4. NTU = Nephelomelric Turbidity Units 5. uS/cm = microsiemens per centimeter 6. °C = centigrade 7. mV = millivolts 8. -- = no data available 9. Data priorto 01/09/06 provided by Joyce Engineering, Inc. 2 of April 2023 31405795.004 TABLE 6 Summary of Detected Constituents in Pore Water Samples Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Parameter Units Sample Date MDL MRL PWS-4 PWS-5 PWS-6 Blanks Acetone ug/L 08/18/21 10 20 ND ND ND ND u /L 07/06/22 10 20 dry dry ND ND Acrylonkrile ug/L 08/18/21 3.5 10 ND ND ND ND u /L 07/06/22 3.5 10 dry dry ND ND Benzene ug/L 08/18/21 0.15 1.0 ND ND ND ND u /L 07/06/22 0.15 1.0 dry dry ND ND Bromochlommethane ug/L 08/18/21 0.48 1.0 ND ND ND ND u /L 07/06/22 0.48 1.0 dry dry ND ND Bromodichloromethane ug/L 08/18/21 0.17 1.0 ND ND ND ND u /L 07/06/22 0.17 1.0 dry dry ND ND Bromoform ug/L 08/18/21 0.22 1.0 ND ND ND ND u /L 07/06/22 0.22 1.0 dry dry ND ND Carbon disulfide ug/L 08/18/21 1.5 5.0 ND ND ND ND u /L 07/06/22 1.5 5.0 dry dry ND ND Carbon tetrachloride ug/L 08/18/21 0.17 1.0 ND ND ND ND u /L 07/06/22 0.17 1.0 dry dry ND ND Chlorobenzene ug/L 08/18/21 0.17 1.0 ND ND ND ND u /L 07/06/22 0.17 1.0 dry dry ND ND Chloroethane ug/L 08/18/21 0.23 1.0 ND ND ND ND u /L 07/06/22 0.23 1.0 dry dry ND ND Chloroform ug/L 08/18/21 0.18 1.0 ND ND ND ND u /L 07/06/22 0.18 1.0 dry dry ND ND Dibromochloromethane ug/L 08/18/21 0.17 1.0 ND ND ND ND u /L 07/06/22 0.17 1.0 dry dry ND ND 1,2-Dibromo-3-chloropropane ug/L 08/18/21 0.48 1.0 ND ND ND ND u /L 07/06/22 0.48 1.0 dry dry ND ND 1,2-Dibromoethane ug/L 08/18/21 0.66 1.0 ND ND ND ND u /L 07/06/22 0.66 1.0 dry dry ND ND 1,2-Dichlorobenzene ug/L 08/18/21 0.19 1.0 ND ND ND ND u /L 07/06/22 0.19 1.0 dry dry ND ND 1,4-Dichlorobenzene ug/L 08/18/21 0.19 1.0 ND ND ND ND u /L 07/06/22 0.19 1.0 dry dry ND ND trans-1,4-Dichloro-2-butene ug/L 08/18/21 0.70 1.0 ND ND ND ND u /L 07/06/22 0.70 1.0 dry dry ND ND 1,1-Dichloroethane ug/L 08/18/21 0.13 1.0 ND ND ND ND u /L 07/06/22 0.13 1.0 dry dry ND ND 1,2-Dichloroethane ug/L 08/18/21 0.21 1.0 ND ND ND ND u /L 07/06/22 0.21 1.0 dry dry ND ND 1,1-Dichloroethene ug/L 08/18/21 0.21 1.0 ND ND ND ND u /L 07/06/22 0.21 1.0 dry dry ND ND cis-1,2-Dichloroethene ug/L 08/18/21 0.15 1.0 ND ND ND ND u /L 07/06/22 0.15 1.0 dry dry ND ND trans-1,2-Dichloroethene ug/L 08/18/21 0.21 1.0 ND ND ND ND u /L 07/06/22 0.21 1.0 dry dry ND ND 1,2-Dichloropmpane ug/L 08/18/21 0.10 1.0 ND ND ND ND u /L 07/06/22 0.10 1.0 dry dry ND ND cis-1,3-Dichloropropene ug/L 08/18/21 0.20 1.0 ND ND ND ND u /L 07/06/22 0.20 1.0 dry dry ND ND trans-1,3-Dichloropropene ug/L 08/18/21 0.15 1.0 ND ND ND ND u /L 07/06/22 0.15 1.0 dry dry ND ND Ethylbenzene ug/L 08/18/21 0.13 1.0 ND ND ND ND u /L 07/06/22 0.13 1.0 dry dry ND ND 2-Hexanone ug/L 08/18/21 0.88 5.0 ND ND ND ND u /L 07/06/22 0.88 5.0 dry dry ND ND Bromomethane ug/L 08/18/21 0.14 1.0 ND ND ND ND ug/L 07/06/22 0.14 1.0 dry dry ND ND Chloromethane ug/L 08/18/21 0.13 1.0 ND ND ND ND ug/L 07/06/22 0.13 1.0 dry dry ND ND Dibromomethane ug/L 08/18/21 0.27 1.0 ND ND ND ND ug/L 07/06/22 0.27 1.0 dry dry ND ND Methylene chloride ug/L 08/18/21 0.23 1.0 ND ND ND ND ug/L 07/06/22 0.23 1.0 dry dry ND ND 2-Butanone ug/L 08/18/21 1.3 5.0 ND ND ND ND ug/L 07/06/22 1.3 5.0 dry dry ND ND lodomethane ug/L 08/18/21 1.7 5.0 ND ND ND ND ug/L 07/06/22 1.7 5.0 dry dry ND ND 4-Methyl-2-pentanone ug/L 08/18/21 1.1 5.0 ND ND ND ND ug/L 07/06/22 1.1 5.0 dry dry ND ND Styrene ug/L 08/18/21 0.11 1.0 ND ND ND ND ug/L 07/06/22 0.11 1.0 dry dry ND ND 1, 1, 1,2-Tetrachloroethane ug/L 08/18/21 0.17 1.0 ND ND ND ND ug/L 07/06/22 0.17 1.0 dry dry ND ND 1, 1,2,2-Tetrachloroethane ug/L 08/18/21 0.28 1.0 ND ND ND ND ug/L 07/06/22 0.28 1.0 dry dry ND ND Tetrachlomethene ug/L 08/18/21 0.17 1.0 ND ND ND ND ug/L 07/06/22 0.17 1.0 dry dry ND ND Toluene ug/L 08/18/21 0.14 1.0 ND ND ND ND ug/L 07/06/22 0.14 1.0 dry dry ND 2.1 1, 1, 1-Trichloroethane ug/L 08/18/21 0.12 1.0 ND ND ND ND ug/L 07/06/22 0.12 1.0 dry dry ND ND Trichloroethene ug/L 08/18/21 0.15 1.0 ND ND ND ND ug/L 07/06/22 0.15 1.0 dry dry ND ND 1, 1,2-Trichloroethane ug/L 08/18/21 0.14 1.0 ND ND ND ND ug/L 07/06/22 0.14 1.0 dry dry ND ND Trichlorofluoromethane ug/L 08/18/21 0.24 1.0 ND ND ND ND ug/L 07/06/22 0.24 1.0 dry dry ND ND 1,2,3-Trichloropropane ug/L 08/18/21 0.23 1.0 ND ND ND ND ug/L 07/06/22 0.23 1.0 dry dry ND ND Vinyl acetate ug/L 08/18/21 0.95 5.0 ND ND ND ND ug/L 07/06/22 0.95 5.0 dry dry ND ND Vinyl chloride ug/L 08/18/21 0.32 1.0 ND ND ND ND ug/L 07/06/22 0.32 1.0 dry dry ND ND Xylenes (Total) ug/L 08/18/21 0.45 3.0 ND ND ND ND ug/L 07/06/22 0.45 3.0 dry dry ND ND Notes: 1. PWS = pore water sample 2. mg/L= milligrams per liter 3. J flags are estimated values between MDL and PQL 4. B = blank -qualified data 5. ND = not detected at or above the stated reporting limit 6. Bold = concentrations above Human Health or Chronic Surface Water Standard 7. Blanks = field, trip and laboratory blanks 8. No dilutions were noted for the July 2022 event r►ti�� 1 of April 2023 31405795.004 TABLE 7 Summary of Field Parameters in Pore Water Samples Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Parameter Units Sample Date MDL MRL PWS-4 PWS-5 PWS-6 pH (Field) S.U. 08/18/21 10 20 6.68 6.98 6.25 S.U. 07/05/22 10 20 dry dry 6.86 Specific Conductance (Field) US/cm 08/18/21 3.5 10 362 268 931 us/cm 07/05/22 3.5 10 dry dry 362.8 Temperature (Field) °C 08/18/21 0.15 1.0 22.8 23.6 22.6 °C 07/05/22 0.15 1.0 dry dry 19.5 Turbidity (Field) NTU 08/18/21 0.48 1.0 116 724 291 NTU 07/05/22 0.48 1.0 dry dry 141 Oxidation Reduction Potential (Field) mV 08/18/21 0.17 1.0 -31.6 3.40 -49.6 mV 07/05/22 0.17 1.0 dry dry -52.5 Dissolved Oxygen (Field) mg/L 08/18/21 0.22 1.0 0.99 3.48 1.07 mg/L 07/05/22 0.22 1.0 dry dry 4.70 Notes: 1. PWS = pore water sample 2. mg/L = milligrams per liter 3. S.U. = Standard Units 4. NTU = Nephelometric Turbidity Units 5. uS/cm = microsiemens per centimeter 6. °C = centigrade 7. mV = millivolts 8. dry = pore water sampler did not encounter the water table 1 of 1 April 2023 31405795.004 TABLES Summary of Detected Constituents in Surface Water Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Parameter Reporting Sample MDL MRL SWS Reporting Upstream Downstream Blanks SW-1 SW-3 SW-2 SW-4 SW-5 SW-6 Units Data Limit Antimony ug/L 01/16/07 -- -- 6 ND ND ND ND -- -- ND Human Health Standard = 640 ug/L ug/L 07/02/07 -- -- 6 -- ND -- ND -- -- ND ug/L 01/29/08 -- -- 6 ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 6 -- ND -- ND -- -- ND ug/L 02/27/09 -- -- 6 ND ND ND ND -- -- ND ug/L 07/96/09 -- -- 6 dry ND dry ND -- -- ND ug/L 01/04/10 -- -- 6 0.0870 J ND ND ND -- -- ND ug/L 07/01/10 -- -- 6 dry dry dry ND -- -- ND ug/L 01/13/11 -- -- 6 ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 6 dry ND -- ND -- -- ND ug/L 01/16/12 -- -- 6 ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 6 dry ND dry ND -- -- 0.461 J ug/L 01/14/13 -- -- 6 ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 6 ND 0.371 J ND 0.436 J -- -- ND ug/L 01/30/14 -- -- 6 ND ND ND 0.308 J -- -- ND ug/L 07/08/14 -- -- 6 dry ND dry ND -- -- ND ug/L 03/03/15 0.22 -- 6 ND 0.255 J ND ND -- -- ND ug/L 08/12/15 0.22 -- 6 dry ND dry ND -- -- ND ug/L 02/17/ 6 0.22 -- 6 ND ND ND 8.13 J -- -- ND ug/L 07/14/i6 0.22 -- 6 ND ND ND ND -- -- ND ug/L 01/11/17 0.37 -- 6 ND ND 0.553 J 0.413 J -- -- ND ug/L 07/11/17 0.37 -- 6 dry dry ND ND -- -- ND ug/L 01/09/18 0.25 -- 6 ND ND ND ND -- -- ND ug/L 07/26/18 1.85 5.0 -- dry ND dry ND -- -- ND ug/L 01/30/11 0.74 2.0 -- ND ND ND ND -- -- ND ug/L 07H 0/19 0.74 2.0 -- ND ND dry ND -- -- ND ug/L 01/30/20 0.74 2.0 -- ND ND ND ND -- -- ND ug/L 07/07/20 0.74 2.0 -- dry ND dry ND -- -- ND ug/L 01/19/21 0.74 2.0 -- ND ND ND ND -- ND ug/L 08/18/21 0.74 2.0 -- 0.892 J ND ND ND ND ND ND ug/L 01/26/22 0.74 2.0 -- ND ND ND ND ND ND ND ug/L 07/06/22 0.74 2.0 -- dry ND dry ND ND ND ND u /L 01/23/23 0.34 5.0 0.84 B 0.46 B 0.61 B 0.40 B 0.34 B 0.39 B 1.14 J Arsenic ug/L 10/08/03 -- -- 10 ND ND ND ND -- - ND Freshwater Acute SW Standard = 340 ug/L ug/L 01/23/04 -- -- 10 ND ND ND ND -- -- ND Freshwater Chronic SW Standard = 150 ug/L ug/L 07/08/04 -- -- 10 ND ND ND ND -- -- ND ug/L 01/25/05 -- -- 10 ND ND ND ND -- -- ND ug/L 07/06/05 -- -- 10 dry ND dry ND -- -- ND ug/L 01/09/06 -- -- 10 ND ND ND ND -- -- ND ug/L 07/12/06 -- -- 10 ND ND ND ND -- -- ND ug/L 01/16/07 -- -- 10 ND 3.1 B 3.8 B ND -- -- 2.4 J ug/L 07/02/07 -- -- 10 dry ND dry ND -- -- ND ug/L 01/29/08 -- -- 10 ND ND ND ND -- -- 2.1 J ug/L 07/17/08 -- -- 10 dry ND dry ND -- -- ND ug/L 02/27/09 -- -- 10 3.5 J ND ND ND -- -- ND ug/L 07/16/09 -- -- 10 dry 2.82 J dry ND -- -- ND ug/L 01/04/10 -- -- 10 ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 10 dry dry dry ND -- -- 3.54 J ug/L 01/13/11 -- -- 10 3.38 J 3.72 J 3.51 J 3.70 J -- -- ND ug/L 07/21/11 -- -- 10 dry ND ND -- -- ND ug/L 01/16/12 -- -- 10 ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 10 dry 2.86 B dry 3.18 B -- -- 3.13 J ug/L 01/14/13 -- -- 10 ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 10 ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 10 ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 10 dry ND dry ND -- -- ND ug/L 03/03/15 5.4 - 10 ND ND ND ND -- - ND ug/L 08/12/15 6.8 - 10 dry ND dry ND -- - ND ug/L O2/17/ 6 6.8 - 10 ND ND ND ND -- - ND ug/L 07/14/116 6.8 - 10 6.91 J ND ND ND -- - ND ug/L 01/11/17 6.8 - 10 ND ND ND ND -- - ND ug/L 07/11/17 6.8 -- 10 dry dry ND ND -- - ND ug/L 01/09/18 6.8 - 10 ND ND ND ND -- - ND ug/L 07/26/18 7.6 10 -- dry ND dry ND -- - ND ug/L 01/30/11 7.6 10 -- ND ND ND ND -- - ND ug/L 07/10/19 7.6 10 -- ND ND dry ND -- - ND ug/L 01/30/20 7.6 10 -- ND ND ND ND -- - ND ug/L 07/07/20 7.6 10 -- dry ND dry ND -- - ND ug/L 01/19/21 7.6 10 -- ND ND ND ND - ND ug/L 08/18/21 7.6 10 -- ND ND ND ND ND ND ND ug/L 01/26/22 7.6 10 - ND ND ND ND ND ND ND ug/L 07/06/22 7.6 10 - dry ND dry ND ND ND ND ug/L 01/23/23 6.4 20 ND ND ND ND ND ND ND Barium ug/L 10/08/03 -- - 500 ND ND ND ND -- - ND Human Health Std. = 20,000 ug/L ug/L 01/23/04 - - 500 ND ND ND ND -- - ND ug/L 07/08/04 - - 500 ND ND ND ND -- - ND ug/L 01/25/05 - - 500 ND ND ND ND -- - ND ug/L 07/06/05 - - 500 dry ND dry ND -- - ND ug/L 01/09/06 - - 500 ND ND ND ND -- - ND ug/L 07/12/06 - - 500 ND ND ND ND -- - ND ug/L 01/16/07 - - 100 38.7 J 47.6 J 39.5 J 46 46.0 J 0.90 J ug/L 07/02/07 1 1 1.2 J u9/L 01/29/08 00 49.8 J 74.1 J 62.2 J 7.2 J ---- -- 03 J ug/L 0717/08 100 dry 67 dry 719 J ND ug 02/27/0 00 36.0 J39.1 J 52.7 J46.7 J ND ug/L 07/1609 100 dry 945 J .. dry 844 J ND ug/L 01/04/10 100 34.0 J 662 J 38.0 J 503 J 0.552 J ug 07/01/10 -- - 100 dry dry dry 71.0 J -- - ND ug/L 01/13/11 -- -- 100 47.9 J 71.4 J 49.1 J 54.3 J -- -- ND ug/L 07/21/11 -- -- 100 dry 87.5 J -- 69.4 J -- -- ND ug/L 01/16/12 -- -- 100 37.2 J 37.3 J 54.8 J 47.4 J -- -- ND ug/L 07/09/12 -- -- 100 d 7. ND ug/L 01/14/13 0 54.6 J 712 J56.4 J 90 1.4J ug 07/09/13 too 73.5 J 583 J 63.2 J 46.3 J 137 J ug/L 01/30/14 100 41.0 J 62.3 J45.1 J 52.1 J 1.0J ug 07/08/14 -- -- 100 dry 74.4 J dry 61.0 J 1.13 J ug/L 03315 1. 1 47.0 J 826 J45.8 J 60.9 J 3.J ug 08/2/1 dry 163 dry 167 -- -- 2.33 J ug/L 015 2/7/6 10 0 100 00 39.3 J 77.0 J 40.9 J 815 -- -- ND ug/L 0 11 1.0 1 . 1.51 J u 01/1/7 . Jg 91.0 J 85.3 J - -- ND ug/L 07/11/17 11..01 1 J 1.39 J ug/L 0 1. 00 106 10 85.0 J 65.9 J ND 07/2618 1 10 - - dry 709 dry 721 NDug/L ug/L 01/30/19 10 365 52.0 39.7 41.8 ND ug/L 07/19 0 77.5 731 dry 52.7 2.91 J ug/L 01/30/20 1.1 10 41.3 57.4 44.0 56.4 ND ug 07/07/20 1.1 10 -- dry 61.1 dry 40.7 -- -- ND up 01/19/21 1.1 10 -- 43.0 60.6 49.1 51.2 -- - ND uq/L 08/18/21 1.1 10 -- 47.6 58.0 52.3 78.1 294 76.4 ND 01/26/22 1.1 10 -- 56.3 76.3 66.5 69.5 193 79.3 ND %uq/L L 07/06/22 1.1 10 -- dry 91.0 dry 64.7 171 56.3 ND uq/L 1 01/23/23 1 4.4 1 10 1 1 40 56 1 43 50 160 54 1 ND 1 1 of 7 April 2023 31405795.004 TABLES Summary of Detected Constituents in Surface Water Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Parameter Reporting Sample MDL MRL SINS Reporting Upstream Downstream Blanks SW-1 SW-3 SW-2 SW-4 SW-5 SW-6 Units Data Limit Beryllium ug/L 01/16/07 -- -- 1 ND ND ND ND -- -- ND Freshwater Acute SW Standard = 65 ug/L ug/L 07/02/07 -- -- 1 -- ND -- ND -- -- ND Freshwater Chronic SW Standard = 6.5 ug/L ug/L 01/29/08 -- -- 1 ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 1 -- ND -- ND -- -- ND ug/L 02/27/09 -- -- 1 ND ND ND ND -- -- ND ug/L 07/16/09 -- -- 1 dry 0.220 J dry 0.178 J -- -- ND ug/L 01/04/10 -- -- 1 ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 1 dry dry dry ND -- -- ND ug/L 01/13/11 -- -- 1 ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 1 dry ND -- ND -- -- ND ug/L 01/16/12 -- -- 1 ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 1 dry ND dry ND -- -- ND ug/L 01/14/13 -- -- 1 ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 1 ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 1 ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 1 dry ND dry ND -- -- ND ug/L 03/03/15 0.10 -- 1 ND ND ND ND -- -- ND ug/L 08/12/15 0.10 -- 1 dry ND dry ND -- -- ND ug/L 02/17/16 0.10 -- 1 ND ND ND 1.58 J -- -- ND ug/L 07/14/16 0.10 -- 1 ND ND ND ND -- -- ND ug/L 01/11/17 0.10 -- 1 ND ND ND ND -- -- ND ug/L 07/11/17 0.13 -- 1 dry dry ND ND -- -- ND ug/L 01/09/18 0.13 - 1 ND ND ND ND -- -- ND ug/L 07/26/18 0.16 1.0 -- dry ND dry ND -- -- ND ug/L 01/30/19 0.16 1.0 -- ND ND ND ND -- -- ND uq/L 07/10/19 0.16 1.0 -- ND ND dry ND -- -- ND uq/L 01/30/20 0.16 1.0 -- ND ND ND ND -- -- ND ug/L 07/07/20 0.16 1.0 -- dry ND dry ND -- -- ND uq/L 01/19/21 0.16 1.0 -- ND ND ND ND -- -- ND uq/L 08/18/21 0.16 1.0 -- ND ND ND ND ND ND ND uq/L 01/26/22 0.16 1.0 -- ND ND ND ND ND ND ND uq/L 07/06/22 0.16 1.0 -- dry ND dry ND ND ND 0.229 J u /L 01/23/23 1 0.3 4.0 ND ND ND ND ND ND ND Cadmium uq/L 10/08/03 -- -- 1 ND ND ND ND -- -- ND Freshwater Acute SW Standard (uq/L) uq/L 01/23/04 -- -- 1 ND ND ND ND -- -- ND SW-1 = 1.23 uq/L 07/08/04 -- -- 1 ND ND ND ND -- -- ND SW-2 = 2.01 uq/L 01/25/05 -- -- 1 ND ND ND ND -- -- ND SW-3=2.48 uq/L 07/06/05 -- -- 1 dry ND dry ND -- -- ND SW-4, SW-5, and SW-6 =2.40 uq/L 01/09/06 -- -- 1 ND ND ND ND -- -- ND uq/L 07/12/06 -- -- 1 ND ND ND ND -- -- ND Freshwater Chronic SW Standard (ug/L) uq/L 01/16/07 -- -- 1 ND ND ND ND -- -- ND SW-1 = 0.21 uq/L 07/02/07 -- -- 1 dry ND dry ND -- -- ND SW-2 = 0.32 uq/L 01/29/08 -- -- 1 ND ND ND ND -- -- ND SW-3=0.39 uq/L 07/17/08 -- -- 1 dry 0.40 J dry ND -- -- ND SW-4, SW-5, SW-6 = 0.38 uq/L 02/27/09 -- -- 1 ND ND ND ND -- -- ND uq/L 07/16/09 -- -- 1 dry 0.134 B dry 0.442 B -- -- 1.19 uq/L 01/04/10 -- -- 1 0.317 J 0.230 J 0.830 J 0.143 J -- -- ND uq/L 07/01/10 -- -- 1 dry dry dry ND -- -- ND uq/L 01/13/11 -- -- 1 ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 1 dry ND ND -- -- ND uq/L 01/16/12 -- -- 1 ND ND ND ND -- -- ND uq/L 07/09/12 -- -- 1 dry ND dry ND -- -- ND uq/L 01/14/13 -- -- 1 ND ND ND ND -- -- ND uq/L 07/09/13 -- -- 1 ND ND ND ND -- -- ND uq/L 01/30/14 -- -- 7 ND ND ND ND -- -- ND uq/L 07/08/14 -- 7 dry ND dry ND -- -- ND uq/L 03/03/15 0.36 - 1 ND ND ND ND -- - ND ug/L .8/0 /15 0.36 - 1 dry ND dry ND -- - ND ug/L O2/17/ 6 0.36 - 1 ND ND ND ND -- - ND uq/L 07/14/116 0.36 - 1 ND ND ND ND -- - ND ug/L 01/11/17 0.36 - 1 ND ND ND ND -- - ND uq/L 07/11/17 0.36 -- 1 dry dry ND ND -- - ND uq/L 01/09IS 0.36 1 ND ND ND ND -- - ND uq/L 07/26/18 0.36 1.0 -- dry ND dry ND -- - ND uq/L 01/30/11 0.36 1.0 -- ND ND ND ND -- - ND uq/L 07/10/19 0.36 1.0 -- ND ND dry ND -- - ND uq/L 01/30/20 0.36 1.0 -- ND ND ND ND -- - ND ug/L 07/07/20 0.36 1.0 -- dry ND dry ND -- - ND uq/L 01/19/21 0.36 1.0 -- ND ND ND ND - ND ug/L 08/18/21 0.36 1.0 -- ND ND ND ND ND ND ND uq/L 01/26/22 0.36 1.0 - ND ND ND ND ND ND ND ug/L 07/06/22 0.36 1.0 - dry ND dry ND ND ND ND uq/L 01/23/23 0.44 5.0 ND ND ND ND ND ND ND Chromium uq/L 10/08/03 -- -- 10 ND ND ND ND -- - ND Freshwater Acute SW Standard(uq/L) uq/L 01/23/04 - - 10 ND ND ND ND -- - ND SW-1 = 269 uq/L 07/08/04 - - 10 ND ND ND ND -- - ND SW-2 =425 ug/L 01/25/OS - - 10 ND ND ND ND -- - ND SW-3 = 518 uq/L 07/056 05 - - 10 -- ND -- ND -- - ND SW-4 , SW-5, SW-6 = 504 uq/L 01/09/06 - - 10 ND ND ND ND -- - ND uq/L 07/12/O6 - - 10 ND ND ND ND -- - ND Freshwater Chronic SW Standard(uq/L) uq/L 01/16/07 - - 10 ND ND ND ND -- - ND SW-1 = 34.99 uq/L 07/02/07 - - 10 -- ND -- ND -- - ND SW-2 =55.34 uq/L 01/29/08 - - 10 ND ND ND ND -- - ND SW-3=67.4 uq/L 07/17/08 - - 10 -- ND -- ND -- - ND SW-4, SW-5,SW-6 =65.5 uq/L 02/27/09 -- - 10 ND ND ND ND -- - ND uq/L 07/16/09 -- - 10 dry 8.45 J dry 5.87 J -- - ND ug/L 01/04/10 -- - 10 ND 2.49 J ND ND -- - ND uq/L 07/01/10 -- - 10 dry dry dry 1.37 B -- - 1.80 J ug/L 01/13/11 -- -- 10 ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 10 dry ND -- ND -- -- ND ug/L 01/16/12 -- -- 10 ND ND 2.35 J 1.42 J -- -- ND ug/L 07/09/12 -- -- 10 dry ND dry ND -- -- ND ug/L 01/14/13 -- -- 10 1.69 B 2.92 B ND 6.53 B -- -- 1.40 J ug/L 07/09/13 -- -- 10 ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 10 ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 10 dry ND dry ND -- -- ND ug/L 03/03/15 1.4 -- 10 ND 6.99 B ND 4.03 B -- -- 1.66 J ug/L 08/12/15 1.4 -- 10 dry 58.2 dry 43.7 -- -- ND ug/L 02/17/ 6 1.4 -- 10 ND 13.8 ND 343 -- -- ND ug/L 07/14/i6 1.4 -- 10 ND ND 7.29 J ND -- -- ND ug/L 01/11/17 1.4 -- 10 ND ND 3.08 J 2.12 J -- -- ND ug/L 07/11/17 1.4 -- 10 dry dry ND ND -- -- ND ug/L 01/09/18 1.4 -- 10 ND ND ND ND -- -- ND ug/L 07/26/18 1.4 10 - dry 1.49 J dry 1.52 J -- -- ND ug/L 01130/11 1.4 10 -- ND ND ND ND -- -- ND ug/L 07/10/19 1.4 10 -- ND ND dry ND -- -- ND ug/L 01/30/20 1.4 10 -- ND ND ND ND -- -- ND ug/L 07/07/20 1.4 10 -- dry ND dry ND -- -- ND uq/L 01/19/21 1.4 10 -- ND ND ND ND -- - ND uq/L 08/18/21 1.4 10 -- ND ND ND ND 3.44 J 1.43 J ND uq/L 01/26/22 1.4 10 -- ND ND ND 1.81 J 3.98 J ND ND uq/L 07/06/22 1.4 10 -- dry 1.89 dry ND 4.49 J ND ND uq/L 1 01/23/23 1 1.1 1 10 1 1 1.1 J 2.7 J ND 2.3 J ND 3.2 Ji ND %■tiI) 2 of7 April 2023 31405795.004 TABLES Summary of Detected Constituents in Surface Water Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Parameter Reporting Sample MDL MRL SWS Reporting Upstream Downstream Blanks SW-1 SW-3 SW-2 SW-4 SW-5 SW-6 Units Data Limit Cobalt ug/L 01/16/07 -- -- 10 ND ND ND ND -- -- ND Human Health Sid. = 4.0 ug/L ug/L 07/02/07 -- -- 10 -- ND -- ND -- -- ND ug/L 01/29/08 -- -- 10 ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 10 -- ND -- ND -- -- ND ug/L 02/27/09 -- -- 10 2.0 J ND ND ND -- -- ND ug/L 07/16/09 -- -- 10 dry 1.96 J dry 1.69 J -- -- ND ug/L 01/04/10 -- -- 10 0.961 J 2.050 J 0.97 J 1.65 J -- -- ND ug/L 07/01/10 -- -- 10 dry dry dry 1.18 J -- -- ND ug/L 01/13/11 -- -- 10 1.15 J ND ND ND -- -- ND ug/L 07/21/11 -- -- 10 dry ND -- ND -- -- ND ug/L 01/16/12 -- -- 10 ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 10 dry ND dry ND -- -- ND ug/L 01/14/13 -- -- 10 1.59 J 1.77 J ND 4.73 J -- -- ND ug/L 07/09/13 -- -- 10 1.50 J ND ND ND -- -- ND ug/L 01/30/14 -- -- 10 ND 1.58 J 1.27 J 1.91 J -- -- ND ug/L 07/08/14 -- -- 10 dry ND dry ND -- -- ND ug/L 03/03/15 1.1 -- 10 ND 2.65 J ND 1.35 J -- -- ND ug/L 08/12/15 1.1 -- 10 dry 20.2 dry 17.8 -- -- ND ug/L 02/17/16 1.1 -- 10 1.18 J 6.32 J 1.36 J 168 -- -- ND ug/L 07/14/16 1.1 -- 10 1.34 J ND 2.94 J ND -- -- ND ug/L 01/11/17 1.1 -- 10 ND ND 1.95 J 1.82 J -- -- ND ug/L 07/11/17 1.1 -- 10 dry dry ND ND -- -- ND ug/L 01/09/18 1.1 - 10 ND ND ND ND -- -- ND ug/L 07/26/18 1.4 10 -- dry ND dry ND -- -- ND ug/L 01/30/19 1.4 10 -- ND ND ND ND -- -- ND ug/L 07/10/19 1.4 10 -- 2.65 J ND dry ND -- -- ND ug/L 01/30/20 1.4 10 -- ND 1.63 J ND 1.88 J -- -- ND ug/L 07/07/20 1.4 10 -- dry ND dry ND -- -- ND ug/L 01/19/21 1.4 10 -- ND 1.68 J 1.92 J ND -- -- ND ug/L 08/18/21 1.4 10 -- ND ND ND ND 7.33 J 1.49 J ND ug/L 01/26/22 1.4 10 -- ND ND ND ND 13.0 ND ND Verification Event ug/L 04/04/22 1.3 10 -- -- -- -- -- 10.3 - ND Dissolved ug/L 04/04/22 1.3 10 -- 9.68 J ND ug/L 07/06/22 1.3 10 -- dry ND dry ND 10.6 ND ND u /L 01/23/23 1 1.4 10 1 ND ND ND ND 15.0 ND ND Copper ug/L 01/16/07 -- -- 10 ND 1.50 J 1.00 J ND -- -- ND Freshwater Acute SW Standard(uq/L) ug/L 07/02/07 -- -- 10 dry ND dry ND -- -- ND SW-1 = 5.67 ug/L 01/29/08 -- -- 10 1.00 J 1.20 J ND 1.10 J -- -- ND SW-2 = 9.60 ug/L 07/1%8 -- -- 10 dry ND dry 1.90 J -- -- ND SW-3 = 12.0 ug/L 02/27/09 -- -- 10 1.90 J ND 1.80 J ND -- -- ND SW-4, SW-5, SW-6 = 11.7 ug/L 07/16/09 -- -- 10 dry 7.67 B dry 5.37 B -- -- 6.42 J ug/L 01/04/10 -- -- 10 2.39 J 4.12 J ND 2.06 J -- -- ND Freshwater Chronic SW Standard (ug/L) ug/L 07/01/10 -- -- 10 dry dry dry ND -- -- ND SW-1 = 4.09 ug/L 01/13/11 -- -- 10 ND ND ND ND -- -- ND SW-2 = 6.60 ug/L 07/21/11 -- -- 10 dry 1.69 B 1.62 B -- -- 1.65 J SW-3 = 8.11 ug/L 01/16/12 -- -- 10 ND ND 2.89 J ND -- -- ND SW-4, SW-5, SW-6 = 7.87 ug/L 07/09/12 -- -- 10 dry ND dry ND -- -- ND ug/L 01/14/13 -- -- 10 5.01 J 4.24 J ND 13.4 -- -- ND ug/L 07/09/13 -- -- 10 1.63 J 2.44 J ND 2.28 J -- -- ND ug/L 01/30/14 -- -- 10 ND ND ND ND -- -- ND ug/L 07/08/14 -- 10 dry ND dry 1.63 J -- -- ND ug/L 03/03/15 1.6 -- 10 3.91 J 10.4 3.79 J 8.05 J -- -- ND ug/L 08/12/15 1.6 -- 10 dry 52.4 dry 43.3 -- -- ND ug/L 02/17/i6 1.6 -- 10 4.03 B 14.4 B 2.76 B 357 -- -- 3.66 J ug/L 07/14/i6 1.6 -- 10 ND ND 7.98 a 2.96 a -- -- 3.50 J ug/L 01/11/17 1.6 -- 10 6.07 B 4.16 B 7.82 B 7.32 B -- -- 6.33 J ug/L 07/11/17 1.6 - 10 dry dry 2.29 J 1.73 J -- - ND ug/L 0110 18 1.6 -- 10 ND ND ND ND -- - ND ug/L 07/26/18 1.6 10 -- dry 2.50 B dry 1.64 B -- - 2.02 J ug/L 01/30/11 1.6 10 -- 3.48 J 2.94 J ND 2.59 J -- - ND ug/L 07/10/19 1.6 10 -- 2.12 B 3.28 B dry 2.96 B -- - 3.52 J ug/L 01/30/20 1.6 10 -- 4.14 J 2.56 J 1.77 J 2 .0 1 J -- - ND ug/L 07/07/20 1.6 10 -- dry ND dry ND -- - ND ug/L 01/19/21 1.6 10 -- 2.72 J ND ND ND - ND ug/L 08/18/21 1.6 10 - 2.16 J 4.17 J ND 2.34 J ND 1.97 J ND ug/L 01/26/22 1.6 10 - 1.62 J ND ND ND ND ND ND ug/L 07/06/22 1.6 10 -- dry ND dry ND ND ND ND ug/L 01/23/23 3.2 20 5.00 J 5.5 J 3.2 J 4.7 J ND 6.0 J ND Lead ug/L 10/08/03 -- -- 10 ND ND ND ND -- - ND Freshwater Acute SW Standard(uq/L) ug/L 01/23/04 -- -- 10 ND ND ND ND -- - ND SW-1 = 23.5 ug/L 07/08/04 -- - 10 ND ND ND ND -- - ND SW-2=43.7 ug/L 01/25/05 -- - 10 ND ND ND ND -- - ND SW-3=56.9 ug/L 07/06/OS -- - 10 dry ND dry ND -- - ND SW-4, SW-5, SW-6 = 54.8 ug/L 01/09/06 -- - 10 ND ND ND ND -- - ND ug/L 07/12/O6 -- - 10 ND ND ND ND -- - ND Freshwater Chronic SW Standard (ug/L) ug/L 01/16/07 -- - 10 4.6 J ND 2.6 J 3.6 J -- -- ND SW-1 = 0.92 ug/L 07/02/07 -- - 10 dry ND dry ND -- - ND SW-2=1.70 ug/L 01/29/08 -- - 10 ND ND ND ND -- - ND SW-3 = 2.22 ug/L 07/17/08 -- - 10 dry ND dry ND -- - ND SW-4, SW-5, SW-6 = 2.13 ug/L OZ/27/09 -- - 10 ND ND ND ND -- - ND ug/L 07/16/09 -- - 10 dry 4.30 J dry 4.68 J -- -- ND ug/L 01/04/10 -- - 10 1.68 B 4.41 B ND ND -- - 1.24 J ug/L 07/01/10 - - 10 dry dry dry 2.56 J -- -- ND ug/L 01/13/11 - - 10 ND ND ND ND -- - ND ug/L 07/21/11 - - 10 dry ND 2.32 J -- -- ND ug/L 01/16/12 - - 10 ND ND ND ND -- - ND ug/L 07/09/12 - - 10 dry ND dry ND -- - ND ug/L 01/14/13 - - 10 ND ND ND 3.58 J -- -- ND ug/L 07/09/13 -- -- 10 ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 10 ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 10 dry ND dry ND -- -- ND ug/L 03/03/15 2.1 -- 10 ND ND ND ND -- -- ND ug/L 08/12/15 3.1 -- 10 dry 15.7 dry 14.8 -- -- ND ug/L O2/17/i6 3.1 -- 10 ND ND ND 32.5 J -- -- ND ug/L 07/14/i6 3.1 -- 10 ND ND ND ND -- -- ND ug/L 01/11/17 3.1 -- 10 ND ND ND ND -- -- ND ug/L 07/11/17 3.1 -- 10 dry dry ND ND -- -- ND ug/L 01/09/18 3.1 - 10 ND ND ND ND -- -- ND ug/L 07/26/18 3.1 10 -- dry ND dry ND -- -- ND ug/L 01130/11 3.1 10 -- ND ND ND ND -- -- ND ug/L 07/10/19 3.1 10 -- ND ND dry ND -- -- ND ug/L 01/30/20 3.1 10 -- ND ND ND ND -- -- ND ug/L 07/07/20 3.1 10 -- dry ND dry ND -- -- ND ug/L 01/19/21 3.1 10 -- ND ND ND ND -- -- ND ug/L 08/18/21 3.1 10 -- ND ND ND ND ND ND ND ug/L 01/26/22 3.1 10 -- ND ND ND ND ND ND ND ug/L 07/06/22 3.1 10 -- dry ND dry ND ND ND ND ug/L 1 01/23/23 1 6.6 1 10 1 1 ND ND I ND ND ND ND ND 1 3 of April 2023 31405795.004 TABLES Summary of Detected Constituents in Surface Water Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Parameter Reporting Sample MDL MRL SWS Reporting Upstream Downstream Blanks SW-1 SW-3 SW-2 SW-4 SW-5 SW-6 Units Data Limit Nickel ug/L 01/16/07 -- -- 50 2.9 J ND ND ND -- -- ND Freshwater Acute SW Standard(ug/L) ug/L 07/02/07 -- -- 50 dry ND dry 1.7 J -- -- ND SW-1 = 216 ug/L 01/29/08 -- -- 50 4.8 J ND ND ND -- -- ND SW-2 = 346 ug/L 07/17/08 -- -- 50 dry ND dry ND -- -- ND SW-3 =424 ug/L 02/27/09 -- -- 50 2.4 J ND ND ND -- -- ND SW-4,SW-5,SW-6=412 ug/L 07/16/09 -- -- 50 dry 3.92 B dry 3.42 B -- -- 3.80 J ug/L 01/04/10 -- -- 50 ND ND ND ND -- -- ND Freshwater Chronic SW Standard (ug/L) ug/L 07/01/10 -- -- 50 dry dry dry ND -- -- ND SW-1 = 24.0 ug/L 01/13/11 -- -- 50 ND ND ND ND -- -- ND SW-2 = 38.5 ug/L 07/21/11 -- -- 50 dry ND -- ND -- -- ND SW-3 =47.1 ug/L 01/16/12 -- -- 50 ND ND ND ND -- -- ND SW-4, SW-5, SW-6 = 45.8 ug/L 07/09/12 -- -- 50 dry ND dry ND -- -- ND ug/L 01/14/13 -- -- 50 2.29 J ND ND 2.84 J -- -- ND ug/L 07/09/13 -- -- 50 1.91 J ND ND ND -- -- ND ug/L 01/30/14 -- -- 50 ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 50 dry ND dry ND -- -- ND ug/L 03/03/15 1.8 -- 50 ND 3.67 J ND ND -- -- ND ug/L 08/12/15 1.8 -- 50 dry 29.9 J dry 25.3 J -- -- ND ug/L 02/17/16 1.8 -- 50 ND 8.79 J ND 230 -- -- ND ug/L 07/14/16 2.2 -- 50 3.23 B ND 5.87 B 2.24 B -- -- 11.9 J ug/L 01/11/17 2.2 -- 50 2.60 J ND 3.47 J 3.28 J -- -- ND ug/L 07/11/17 2.2 -- 50 dry dry ND ND -- -- ND ug/L 01/09/18 2.2 -- 50 ND ND ND 2.34 J -- -- ND ug/L 07/26/18 2.2 10 -- dry 2.25 J dry 2.83 J -- -- ND ug/L 01/30/19 2.2 10 -- ND ND ND ND -- -- ND ug/L 07/10/19 2.2 10 -- ND ND dry ND -- -- ND ug/L 01/30/20 2.2 10 -- 2.26 J ND ND ND -- -- ND ug/L 07/07/20 2.2 10 -- dry ND dry ND - -- ND ug/L 01/19/21 2.2 10 -- ND ND ND ND -- ND ug/L 08/18/21 2.2 10 -- ND ND ND ND 5.05 J NO ND ug/L 01/26/22 2.2 10 -- ND ND ND ND 2.55 J ND ND ug/L 07/06/22 2.2 10 -- dry 2.21 dry ND 5.16 J ND ND u /L 01/23/23 1 3.3 40 ND ND ND ND 4.5 J ND ND Selenium ug/L 10/08/03 -- -- 20 ND ND ND ND -- - ND Freshwater Acute SW Standard = 5 ug/L ug/L 01/23/04 -- -- 20 ND ND ND ND -- - ND Freshwater Chronic SW Standard = 5 ug/L ug/L 07/08/04 -- -- 20 ND ND ND ND -- -- ND ug/L 01/25/05 -- -- 20 ND ND ND ND -- -- ND ug/L 07/06/05 -- -- 20 -- ND -- ND -- -- ND ug/L 01/09/06 -- -- 20 ND ND ND ND -- -- ND ug/L 07/12/06 -- -- 20 ND ND ND ND -- -- ND ug/L 01/16/07 -- -- 10 ND ND ND ND -- -- ND ug/L 07/02/07 -- -- 10 -- ND -- ND -- -- ND ug/L 01/29/08 -- -- 10 ND ND ND ND -- -- ND ug/L 07/17/08 -- -- 10 -- ND -- ND -- -- ND ug/L 02/27/09 -- -- 10 4.7 J ND 5.8 J ND -- -- ND ug/L 07/16/09 -- -- 10 dry ND dry ND -- -- ND ug/L 01/04/10 -- -- 10 ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 10 dry dry dry ND -- -- ND ug/L 01/13/11 -- -- 10 ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 10 dry ND ND -- -- ND ug/L 01/16/12 -- -- 10 ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 10 dry ND dry ND -- -- ND ug/L 01/14/13 -- -- 10 ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 10 ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 10 ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 10 dry ND dry ND -- -- ND ug/L 03/03/15 5 - 10 ND ND ND ND -- - ND ug/L 08/12/15 5 - 10 dry ND dry ND -- - NO ug/L 02/17/16 5 - 10 ND ND ND ND -- - NO ug/L 07/14/16 6.2 - 10 ND ND ND ND -- - NO ug/L 01/11/17 6.2 - 10 ND ND ND ND -- - NO ug/L 07/11/17 6.2 -- 10 dry dry ND ND -- - NO ug/L 01/09/18 6.2 - 10 ND ND ND ND -- - NO ug/L 07/26/18 6.2 10 -- dry ND dry ND -- - NO ug/L 01/30/19 6.2 10 -- ND ND ND ND -- - NO ug/L 07/10/19 6.2 10 -- ND ND dry ND -- - NO ug/L 01/30/20 6.2 10 -- ND ND ND ND -- - NO ug/L 07/07/20 6.2 10 -- dry ND dry ND -- - NO ug/L 01/19/21 6.2 10 -- ND ND ND ND - NO ug/L 08/18/21 6.2 10 -- ND ND ND ND ND NO NO ug/L 01/26/22 6.2 10 - ND ND ND ND ND NO NO ug/L 07/06/22 6.2 10 - dry ND dry ND ND NO NO ug/L 01/23/23 1 10 20 ND ND ND ND ND ND NO Silver ug/L 10/08/03 -- - 10 ND ND ND ND -- - NO Freshwater Acute SW Standard(uq/L) ug/L 01/23/04 - - 10 ND ND ND ND -- - NO SW-1 = 0.67 ug/L 07/08/04 - - 10 ND ND ND ND -- - NO SW-2 = 1.74 ug/L 01/25/OS - - 10 ND ND ND ND -- - ND SW-3=2.63 ug/L 07/06/05 - - 10 -- ND -- ND -- - ND SW-4, SW-5, SW-6 = 2.48 ug/L 01/09/06 - - 10 ND ND ND ND - - ND ug/L 07/12/O6 - - 10 ND ND ND ND - - ND Freshwater Chronic Standard = 0.06 uq/L ug/L 01/16/07 - - 10 ND ND ND ND - - ND ug/L 07/02/07 - - 10 -- ND -- ND - - ND ug/L 01/29/08 - - 10 ND ND ND ND -- - ND ug/L 07/17/08 - - 10 -- ND -- ND -- - ND ug/L 02/27/09 - - 10 ND ND ND ND -- - ND ug/L 07/16/09 - - 10 dry ND dry ND -- - ND ug/L 01/04/10 - - 10 ND ND ND ND -- - ND ug/L 07/01/10 -- - 10 dry dry dry ND - - ND uq/L 01/13/11 -- -- 10 ND ND ND ND -- -- ND uq/L 07/21/11 -- -- 10 dry ND -- ND -- -- ND uq/L 01/16/12 -- -- 10 ND ND ND ND -- -- ND uq/L 07/09/12 -- -- 10 dry ND dry ND -- -- ND uq/L 01/14/13 -- -- 10 ND ND ND ND -- -- ND uq/L 07/09/13 -- -- 10 ND ND ND ND -- -- ND uq/L 01/30/14 -- -- 10 ND ND ND ND -- -- ND uq/L 07/08/14 -- -- 10 dry ND dry ND -- -- ND uq/L 03/03/15 1.9 -- 10 ND ND ND ND -- -- ND uq/L 08/12/15 1.9 -- 10 dry ND dry ND -- -- 2.59 J uq/L 02/17/ 6 1.9 -- 10 ND ND ND ND -- -- ND uq/L 07/14/i6 1.9 -- 10 ND ND ND ND -- -- ND uq/L 01/11/17 1.9 -- 10 ND ND ND ND -- -- ND uq/L 07/11/17 1.9 -- 10 dry dry ND ND -- -- ND ug/L 01/09/18 1.9 -- 10 1.92 J 2.26 J 1.96 J ND -- -- ND uq/L 07126 8 1.9 10 - dry ND dry ND -- -- ND uq/L 01/30/19 1.9 10 -- ND ND ND ND -- -- ND uq/L 07/10/19 1.9 10 -- ND ND dry ND -- -- ND uq/L 01/30/20 1.9 10 -- ND ND ND ND -- -- ND ug/L 07/07/20 1.9 10 -- dry ND dry ND -- -- ND uq/L 01/19/21 1.9 10 -- ND ND ND ND -- -- ND uq/L 08/18/21 1.9 10 -- ND ND ND ND ND ND ND uq/L 01/26/22 1.9 10 -- ND ND ND ND ND ND ND uq/L 07/06/22 1.9 10 -- dry ND dry ND ND ND ND uq/L 1 01/23/23 1 1.5 1 10 1 1 ND ND I ND ND ND ND ND 1 4 of7 April 2023 31405795.004 TABLES Summary of Detected Constituents in Surface Water Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Parameter Reporting Sample MDL MRL SWS Reporting Upstream Downstream Blanks SW-1 SW-3 SW-2 SW-4 SW-5 SW-6 Units Data Limit Thallium ug/L 01/16/07 -- -- 5.5 ND ND ND ND -- -- ND Human Health Sid. = 0.47 ug/L ug/L 07/02/07 -- -- 5.5 dry ND dry ND -- -- ND ug/L 01/29/08 -- -- 5.5 ND ND 0.041 J ND -- -- ND ug/L 07/17/08 -- -- 5.5 dry ND dry ND -- -- ND ug/L 02/27/09 -- -- 5.5 ND ND ND ND -- -- ND ug/L 07/16/09 -- -- 5.5 dry ND dry ND -- -- ND ug/L 01/04/10 -- -- 5.5 ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 5.5 dry dry dry ND -- -- ND ug/L 01/13/11 -- -- 5.5 ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 5.5 dry ND -- ND -- -- ND ug/L 01/16/12 -- -- 5.5 ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 5.5 dry ND dry ND -- -- ND ug/L 01/14/13 -- -- 5.5 ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 5.5 ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 5.5 ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 5.5 dry ND dry ND -- -- ND ug/L 03/03/15 0.11 -- 5.5 ND ND ND ND -- -- ND ug/L 08/12/15 0.11 -- 5.5 dry ND dry ND -- -- ND ug/L 02/17/16 0.11 -- 5.5 ND ND ND ND -- -- ND ug/L 07/14/16 0.11 -- 5.5 0.270 J 0.313 J 0.323 J 0.315 J -- -- ND ug/L 01/11/17 0.11 -- 5.5 ND ND ND ND -- -- ND ug/L 07/11/17 0.11 -- 5.5 dry dry 0.117 J ND -- -- ND ug/L 01/09/18 0.05 -- 5.5 ND ND ND ND -- -- ND ug/L 07/26/18 0.55 5.0 -- dry ND dry ND -- -- ND ug/L 01/30/19 0.22 2.0 -- ND 0.230 J ND ND -- -- ND uq/L 07/10/19 0.22 2.0 -- ND ND dry ND -- -- ND uq/L 01/30/20 0.22 2.0 -- ND ND ND ND -- -- ND ug/L 07/07/20 0.22 2.0 -- dry ND dry ND -- -- ND uq/L 01/19/21 0.22 2.0 -- 0.448 J 0.438 J 0.414 J 0.369 J -- ND uq/L 08/18/21 0.22 2.0 -- ND ND ND ND ND ND ND uq/L 01/26/22 0.22 2.0 -- ND ND ND ND ND ND ND uq/L 07/06/22 0.22 2.0 -- dry ND dry ND ND ND ND u /L 01/23/23 1 0.26 1.0 ND ND ND ND ND ND ND Vanadium uq/L 01/16/07 -- -- 25 ND ND ND ND -- -- ND (No SW Standard) uq/L 07/02/07 -- -- 25 dry 2.1 J dry 2.6 J -- -- ND uq/L 01/29/08 -- -- 25 ND ND ND ND -- -- ND uq/L 07/17/08 -- -- 25 dry ND dry 1.7 J -- -- ND uq/L 02/27/09 -- -- 25 ND ND ND ND -- -- ND uq/L 07/16/09 -- -- 25 dry 23.4 J dry 16.1 J -- -- ND uq/L 01/04/10 -- -- 25 1.27 J 7.24 J 0.821 J 4.46 J -- -- ND uq/L 07/01/10 -- -- 25 dry dry dry 4.33 J -- -- ND uq/L 01/13/11 -- -- 25 ND ND ND ND -- -- ND uq/L 07/21/11 -- -- 25 dry 2.31 J 2.39 J -- -- ND uq/L 01/16/12 -- -- 25 1.52 J 1.79 J 701 J 4.69 J -- -- ND uq/L 07/09/12 -- -- 25 dry ND dry 1.81 J -- -- ND uq/L 01/14/13 25 3.46 J 621 J ND 14.0 J -- -- ND u 07/09/13 25 ND 2.85 J ND 279 J ND 01/30/14 25 ND .5 13 JND 1 2.7 J NDuq/L u 07/08/14 25 dry 2.53 J dry 4 J -- -- ND uq/L 03/03/15 1.4 -- 25 ND 17.3 J ND 8.48 J -- -- ND uq/L 08/12/15 1.4 -- 25 dry 155 dry 118 -- -- ND uq/L 02/17/116 1.4 -- 25 ND 35.2 ND 853 -- -- ND uq/L 07/14/i6 1.4 -- 25 ND ND 19.8 J 4.62 J -- -- ND ug/L 01/11/17 1.4 -- 25 ND ND 7.90 J 6.16 J -- -- ND uq/L 07/11/17 1.4 -- 25 dry dry ND ND -- -- ND uq/L 0110 18 1.4 - 25 ND ND ND ND -- -- ND ug/L 07/26/18 1.4 10 -- dry 5.34 J dry 4.65 J -- - ND uq/L 01/30/19 1.4 10 -- 1.76 J 1.91 J ND 1.60 J -- - ND ug/L 07/10/19 1.4 10 -- 3.82 J 1.47 J dry 1.52 J -- - ND uq/L 01/30/20 1.4 10 -- 1.49 J 1.51 J ND 1.91 J -- - ND ug/L 07/07/20 1.4 10 -- dry 2.63 J dry 1.75 J -- - ND uq/L 01/19/21 1.4 10 - ND ND ND ND ND uq/L 08/18/21 1.4 10 - 2.51 J 2.91 J ND 3.35 J ND 2.91 J ND uq/L 01/26/22 1.4 10 -- ND ND ND ND ND ND ND uq/L 07/06/22 1.4 10 -- dry ND dry ND ND ND ND uq/L 01/23/23 1.0 10 3.7 J 6.1 J ND 5.3 J 2.4 J 7.0 J ND Zinc uq/L 01/16/07 -- -- 10 27.0 B 9.5 B 27.1 B 4.2 B -- - 10.0 Freshwater Acute SW Standard(uq/L) uq/L 07/02/07 -- - 10 dry ND dry 7.6 J -- - ND SW-1 = 53.9 uq/L 01/29/08 -- - 10 112 10.6 26.9 6.8 B -- - 1.6 J SW-2-8 .6 uq/L 07/17/08 -- - 10 dry 3.8 J dry 4.1 J -- - ND SW-3 = 106.2 uq/L 02/27/09 -- - 10 29.8 13.8 7.8 J 13.2 -- - ND SW-4, SW-5, SW-6 = 103.1 uq/L 07/16/09 -- - 10 dry 14.0 B dry 26.9 B -- - 20.5 uq/L 01/04/10 -- - 10 24.0 11.9 15.3 7.12 B -- - 2.25 J Freshwater Chronic SW Standard (uq/L) uq/L 07/01/10 -- - 10 dry dry dry 8.81 J -- - ND SW-1 = 54.4 uq/L 01/13/11 -- - 10 32.6 ND 7.26 J ND -- - ND SW-2 = 87.3 uq/L 07/21/11 -- - 10 dry ND -- ND -- - ND SW-3 = 107.0 uq/L 01/16/12 -- - 10 23.1 11.2 7.09 J ND -- - ND SW-4, SW-5, SW-6 = 104.0 uq/L 07/09/12 -- - 10 dry ND dry ND -- - ND uq/L 01/14/13 -- - 10 31.4 7.14 J 4.15 J 21.7 -- - ND uq/L 07/09/13 -- - 10 9.74 J ND ND ND -- - ND uq/L 01/30/14 -- - 10 33.7 9.78 J 17.5 7.46 J -- - ND uq/L 07/08/14 -- - 10 dry ND dry 3.89 J -- - ND uq/L 03/03/15 3.8 - 10 36.9 20.7 19.5 10.6 -- - ND ug/L 08/12/15 3.8 - 10 dry 53.6 dry 55.1 -- - ND uq/L O2/17/i6 3.8 - 10 16.7 20.1 14.4 306 -- -- ND uq/L 07/14/116 4.4 - 10 6.34 J ND 5.57 J ND -- - ND uq/L 01/11/17 4.4 - 10 40.6 4.95 J 11.8 10.1 -- - ND uq/L 07/11/17 4.4 -- 10 dry dry ND ND -- - ND ug/L 01/09/18 4.4 -- 10 17.8 4.49 J ND ND -- -- ND ug/L 07/26/18 4.4 10 -- dry 11.9 dry 8.19 J -- -- ND ug/L 01130/11 4.4 10 -- 17.4 6.13 J 10.1 ND -- -- ND ug/L 07/10/19 4.4 10 -- 7.32 J ND dry ND -- -- ND ug/L 01/30/20 4.4 10 -- 34.8 6.41 J 12.1 4.85 J -- -- ND ug/L 07/07/20 4.4 10 -- dry ND dry ND -- -- ND ug/L 01/19/21 4.4 10 -- 15.9 4.52 J 6.98 J ND -- -- ND ug/L 08/18/21 4.4 10 -- ND 6.94 J 5.28 J 5.03 J ND ND ND ug/L 01/26/22 4.4 10 -- 60.8 6.86 J 12.1 4.49 J ND 5.98 J ND ug/L 07/06/22 4.4 10 -- dry ND dry ND ND ND ND ug/L 1 01/23/23 1 8.7 1 20 1 1 19.0 J ND ND ND ND ND ND 1 5 of7 April 2023 31405795.004 TABLES Summary of Detected Constituents in Surface Water Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Parameter Reporting Sample MDL MRL SWS Reporting Upstream Downstream Blanks SW-1 SW-3 SW-2 SW-4 SW-5 SW-6 Units Data Limit Acetone ug/L 01/29/08 -- -- 100 ND ND ND ND -- -- ND Freshwater Aquatic Std. = 2,000 ug/L ug/L 07/17/08 -- -- 100 -- ND -- ND -- -- ND ug/L 02/27/09 -- -- 100 ND ND ND ND -- -- ND ug/L 07/16/09 -- -- 100 dry ND dry ND -- -- ND ug/L 01/04/10 -- -- 100 ND ND ND ND -- -- 7.1 J ug/L 07/01/10 -- -- 100 dry dry dry ND -- -- ND ug/L 01/13/11 -- -- 100 ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 100 dry ND -- ND -- -- ND ug/L 01/16/12 -- -- 100 ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 100 dry ND dry ND -- -- ND ug/L 01/14/13 -- -- 100 ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 100 ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 100 ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 100 dry ND dry ND -- -- ND ug/L 03/03/15 1.2 -- 100 ND 9.6 J ND 3.6 J -- -- ND ug/L 08/12/15 1.2 -- 100 dry ND dry ND -- -- ND ug/L 02/17/16 1.2 -- 100 ND ND ND ND -- -- ND ug/L 07/14/16 10 -- 100 ND ND ND ND -- -- ND ug/L 01/11/17 10 -- 100 ND ND ND ND -- -- 11 J ug/L 07/11/17 10 -- 100 dry dry ND ND -- -- ND ug/L 01/09/18 10 -- 100 ND ND ND ND -- -- 17 J ug/L 07/26/18 10 20 -- dry ND dry ND -- -- ND ug/L 01/30/19 10 20 -- ND ND ND ND -- -- ND ug/L 07/10/19 10 20 -- ND ND dry ND -- -- ND ug/L 01/30/20 10 20 -- ND ND ND ND -- -- ND ug/L 07/07/20 10 20 -- dry ND dry ND -- -- ND ug/L 01/19/21 10 20 -- ND ND ND ND -- 25 ug/L 08/18/21 10 20 -- ND ND ND ND ND ND ND ug/L 01/26/22 10 20 -- ND ND ND ND ND ND 13 J ug/L 07/06/22 10 20 -- dry ND dry ND ND ND ND u /L 01/23/23 1 10 20 ND 12 B ND ND 12 B 11 B 21 Methylene chloride ug/L 01/29/08 -- -- 1 ND ND ND ND -- - ND ug/L 07/17/08 -- -- 1 -- ND -- ND -- - ND ug/L 02/27/09 -- -- 1 ND ND ND ND -- - ND ug/L 07/16/09 -- -- 1 dry ND dry ND -- -- ND ug/L 01/04/10 -- -- 1 ND ND ND ND -- -- ND ug/L 07/01/10 -- -- 1 dry dry dry ND -- -- ND ug/L 01/13/11 -- -- 1 ND ND ND ND -- -- ND ug/L 07/21/11 -- -- 1 dry ND -- ND -- -- ND ug/L 01/16/12 -- -- 1 ND ND ND ND -- -- ND ug/L 07/09/12 -- -- 1 dry ND dry ND -- -- ND ug/L 01/14/13 -- -- 1 ND ND ND ND -- -- ND ug/L 07/09/13 -- -- 1 ND ND ND ND -- -- ND ug/L 01/30/14 -- -- 1 ND ND ND ND -- -- ND ug/L 07/08/14 -- -- 1 dry ND dry ND -- -- ND ug/L 03/03/15 -- -- 1 ND ND ND ND -- -- ND ug/L 08/12/15 0.23 -- 1 dry ND dry ND -- -- ND ug/L 02/17/16 0.23 -- 1 ND ND ND ND -- -- ND ug/L 07/14/16 0.23 -- 1 ND ND ND ND -- -- ND ug/L 01/11/17 0.23 -- 1 ND ND ND ND -- -- 0.57 J ug/L 07/11/17 0.23 -- 1 -- -- ND ND -- -- ND ug/L 01/09/18 0.23 -- 1 ND ND ND ND -- -- ND ug/L 07/26/18 0.23 1.0 -- dry ND dry ND -- - ND ug/L 01/30/19 0.23 1.0 -- ND ND ND ND -- - ND ug/L 07/10/19 0.23 1.0 -- ND ND dry ND -- - 0.53 J ug/L 01/30/20 0.23 1.0 -- ND ND ND ND -- - ND ug/L 07/07/20 0.23 1.0 -- dry ND dry ND -- - ND ug/L 01/19/21 0.23 1.0 -- ND ND ND ND -- - ND ug/L 08/18/21 0.23 1.0 -- ND ND ND ND ND ND ND ug/L 01/26/22 0.23 1.0 - ND ND ND ND ND ND ND ug/L 07/06/22 0.23 1.0 -- dry ND dry ND ND ND ND u /L 01/23/23 0.23 1.0 ND 0.25 B ND ND ND ND 0.26 J 2-Butanone ug/L 01/29/08 - - 100 ND ND ND ND -- - ND Human Health Std. = 750,000 ug/L ug/L 07/17/08 - - 100 -- ND -- ND -- - ND ug/L 02/27/09 - - 100 ND ND ND ND -- - ND ug/L 07/16/09 - - 100 dry ND dry ND -- - ND ug/L 01/04/10 - - 100 ND ND ND ND - - ND ug/L 07/01/10 - - 100 dry dry dry ND - - ND ug/L 01/13/11 - - 100 ND ND ND ND - - ND ug/L 07/21/11 - - 100 dry ND -- ND -- - ND ug/L 01/16/12 - - 100 ND ND ND ND -- - ND ug/L 07/09/12 - - 100 dry ND dry ND -- - ND ug/L 01/14/13 - - 100 ND ND ND ND -- - ND ug/L 07/09/13 - - 100 ND ND ND ND - - ND ug/L 01/30/14 - - 100 ND ND ND ND - - ND ug/L 07/08/14 -- - 100 dry ND dry ND - - ND ug/L 03/03/15 1.3 - 100 ND 3.9 J ND ND -- - ND ug/L 08/12/15 1.3 - 100 dry ND dry ND -- - ND ug/L 02/17/16 1.3 -- 100 ND ND ND ND -- - ND ug/L 07/14/16 1.3 -- 100 ND ND ND ND -- -- ND ug/L 01/11/17 1.3 -- 100 ND ND ND ND -- -- ND ug/L 07/11/17 1.3 -- 100 dry dry ND ND -- -- ND ug/L 01/09/18 1.3 -- 100 ND ND ND ND -- -- ND ug/L 07/26/18 1.3 5.0 -- dry ND dry ND -- -- ND ug/L 01/30/19 1.3 5.0 -- ND ND ND ND -- -- ND ug/L 07/10/19 1.3 5.0 -- ND ND dry ND -- -- ND ug/L 01/30/20 1.3 5.0 -- ND ND ND ND -- -- ND ug/L 07/07/20 1.3 5.0 -- dry ND dry ND -- -- ND ug/L 01/19/21 1.3 5.0 -- ND ND ND ND -- -- ND ug/L 08/18/21 1.3 5.0 -- ND ND ND ND ND ND ND ug/L 01/26/22 1.3 5.0 -- ND ND ND ND ND ND ND ug/L 07/06/22 1.3 5.0 -- dry ND dry ND ND ND ND u /L 01/23/23 10 20 ND 10 ND ND ND ND ND 1 6 of April 2023 31405795.004 TABLES Summary of Detected Constituents in Surface Water Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Parameter Reporting Units Sample Date MDL MRL SWS Reporting Limit Upstream Downstream Blanks SW-1 SW-3 SW-2 SW-4 SW-5 SW-6 1,4-Dioxane (Human Health Std. = 0.35 ug/L) ug/L 07/26/18 1.2 2.0 -- dry 5.4 dry 5.2 -- -- ND ug/L 01/30/19 1.2 2.0 -- ND 4.5 2.1 3.4 -- -- ND ug/L 07/10/19 1.2 2.0 -- ND 8.0 dry 4.3 -- -- ND ug/L 01/30/20 1.2 2.0 -- ND 3.1 1.6 J 4.1 -- -- ND ug/L 07/07/20 0.8 2.0 -- dry 6.6 dry 4.0 -- -- ND ug/L 01/19/21 0.8 2.0 -- 0.83 J 4.9 3.0 4.6 -- -- ND ug/L 08/18/21 0.8 2.0 -- 1.9 J 5.0 5.1 5.8 19 6.6 ND ug/L 01/26/22 0.8 2.0 -- 3.1 B 5.4 B 4.9 B 9.2 B 18 B 5.7 B 6.5 ug/L 07/06/22 0.8 2.0 -- dry 9.6 dry 4.1 21 7.5 ND u /L 01/23/23 0.32 0.50 ND 1.7 1.4 2.0 14 2.15 ND Notes: 1. SW = surface water monitoring point 2. ug/L = micrograms per liter 3. J = Prior to the 07/18 event, J Flags are estimated values below the SWS Reporting limit. Beginning with the 07/18 event, J flags are estimated values between MDL and PQL. 4. B = blank -qualified data 5. ND = not detected at or above the stated reporting limit 6. Surface Water Standards for NC Appendix I constituents based on Class C Freshwater Aquatic Life stream classification per 15A NCAC 2B. 7. (AL) = SW Standard is an action level 8. (N) = SW Standard is a narrative standard 9. --= no data available 10. Bold = concentrations above Human Health or Chronic Surface Water Standard 11. Shaded and Bold = cencentmi on above Acute and Chronic Surface Water Standards 12. Blanks = field, trip and laboratory blanks. 13. SWS Reporting Limit = NCPQL prior to 2007 and NCSWSL starting in 01/18/07 14. Data prior to 01/0-6 provided by Joyce Engineering, Inc. 15. The following dilutions were noted for the July 2022 event: Antimony/Thallium 2x all locations 16. Hardness values were taken most recently during the January 2021 sampling event and are reported in mg/L: SW-1 = 40, SW-2 = 70, SW-3 = 89, SW-4 = 86. 17. Hardness values for SW4 were used to determine hardness dependent surface water standards for SW-5 and SW-6. 1 7 of April 2023 31405795.004 TABLE 9 Summary of Field Parameters in Surface Water Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Reporting Sample Upstream Downstream Parameter Units Date SW-1 SW-3 SW-2 SW-4 SW-5 SW-6 pH (Field) S.U. 07/06/05 -- 6.49 -- 7.02 S.U. 01/09/06 6.70 6.45 6.01 6.72 S.U. 07/12/06 6.28 6.38 5.86 6.78 S.U. 01/16/07 7.44 6.10 6.02 6.35 S.U. 07/02/07 dry 6.95 dry 8.19 S.U. 01/29/08 5.96 5.76 5.91 6.36 S.U. 07/17/08 dry 7.24 dry 7.20 S.U. 01/14/09 6.63 6.74 6.37 6.98 S.U. 07/16/09 dry 6.65 dry 7.39 S.U. 01/04/10 6.43 6.00 5.62 6.72 S.U. 07/01/10 dry dry dry 7.62 S.U. 01/13/11 5.84 6.69 6.30 6.86 S.U. 07/21/11 dry 6.80 -- 7.35 S.U. 01/16/12 7.12 6.30 5.95 7.31 S.U. 07/09/12 dry 6.64 dry 7.07 S.U. 01/14/13 6.64 7.01 6.51 7.15 S.U. 07/09/13 5.33 6.40 6.23 6.31 S.U. 01/30/14 7.13 6.50 6.12 7.45 S.U. 07/08/14 dry 6.77 dry 7.53 S.U. 03/03/15 7.16 6.54 6.03 6.90 S.U. 08/12/15 dry 5.99 dry 8.74 S.U. 02/17/16 5.81 6.06 5.85 7.53 S.U. 07/14/16 6.30 6.06 6.97 7.54 S.U. 01/11/17 5.24 5.64 5.43 5.86 S.U. 07/11/17 dry 7.05 dry 7.48 S.U. 01/09/18 6.03 6.61 6.78 7.86 S.U. 07/27/18 dry 7.86 dry 7.72 S.U. 01/30/19 6.82 7.29 7.37 7.54 S.U. 07/10/19 6.28 7.04 dry 7.58 S.U. 01/29/20 6.95 7.57 7.79 7.81 S.U. 07/07/20 dry 7.04 dry 7.80 S.U. 01/19/21 7.94 6.76 6.39 7.92 -- -- S.U. 08/18/21 7.17 7.79 7.69 8.22 7.46 7.57 S.U. 01/26/22 6.26 7.43 7.17 7.93 6.93 7.76 Verification Event S.U. 04/04/22 -- -- -- -- 7.23 -- S.U. 07/05/22 dry 7.45 dry 8.47 7.72 8.44 S.U. 01/23/23 7.40 7.97 7.88 8.33 7.14 8.31 Specific Conductance (Field) us/cm 07/06/05 -- 407 -- 366 -- -- us/cm 01/09/06 123 143 155 110 us/cm 07/12/06 175 258 237 213 us/cm 01/16/07 124 184 120 162 us/cm 07/02/07 dry 298 dry 143 us/cm 01/29/08 343 390 311 416 us/cm 07/17/08 dry 317 dry 316 us/cm 01/14/09 160 159 200 183 us/cm 07/16/09 dry 257 dry 255 us/cm 01/04/10 159 216 159 194 us/cm 07/01/10 dry dry dry 333 us/cm 01/13/11 378 419 270 340 us/cm 07/21/11 dry 349 -- 245 us/cm 01/16/12 159 182 162 159 us/cm 07/09/12 dry 380 dry 311 us/cm 01/14/13 218 286 282 264 us/cm 07/09/13 432 268 313 240 us/cm 01/30/14 234 275 239 221 us/cm 07/08/14 dry 399 dry 314 us/cm 03/03/15 264 198 254 197 us/cm 08/12/15 dry 140 dry 138 us/cm 02/17/16 155 181 165 117 us/cm 07/14/16 312 284 307 314 us/cm 01/11/17 326 336 253 302 us/cm 07/11/17 dry 349 dry 258 us/cm 01/09/18 320 330 518 346 us/cm 07/27/18 dry 306 dry 311 us/cm 01/30/19 114 167 213 170 us/cm 07/10/19 207 297 dry 232 us/cm 01/29/20 136 238 218 263 us/cm 07/07/20 dry 285 dry 227 us/cm 01/19/21 145 235 241 245 -- -- us/cm 08/18/21 189 193 269 256 879 278 us/cm 01/26/22 195 315 350 294 755 313 Verification Event us/cm 04/04/22 -- -- -- -- 514 -- us/cm 07/05/22 dry 465 dry 413 1005 471 us/cm 01/23/23 140 175 191 200 669 174 1 of 3 April 2023 31405795.004 TABLE 9 Summary of Field Parameters in Surface Water Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Reporting Sample Upstream Downstream Parameter Units Date SW-1 SW-3 SW-2 SW-4 SW-5 SW-6 Temperature (Field) C 07/06/05 dry 23.3 dry 24.6 °C 01/09/06 10.78 7.15 7.30 9.61 °C 07/12/06 19.96 22.28 22.51 23.03 °C 01/16/07 10.70 11.80 11.60 11.50 °C 07/02/07 dry 20.87 dry 23.49 °C 01/29/08 8.39 6.21 6.93 6.99 °C 07/17/08 dry 20.94 dry 19.01 °C 01/14/09 6.17 5.63 4.98 4.78 °C 07/16/09 dry 20.68 dry 20.93 °C 01/04/10 3.37 1.19 1.43 1.63 °C 07/01/10 dry dry dry 18.27 °C 01/13/11 3.22 1.08 0.97 1.70 °C 07/21/11 dry 23.70 -- 27.15 °C 01/16/12 5.21 5.58 5.91 6.30 °C 07/09/12 dry 23.77 dry 28.19 °C 01/14/13 12.1 12.8 12.9 12.9 °C 07/09/13 21.03 23.01 23.06 25.16 C 01/30/14 0.90 0.70 0.60 0.40 C 07/08/14 dry 22.4 dry 24.0 C 03/03/15 5.01 6.61 5.31 5.70 C 08/12/15 dry 21.7 dry 24.1 °C 02/17/16 6.5 4.9 5.1 8.3 °C 07/14/16 23.5 23.8 23.2 26.3 °C 01/11/17 5.6 4.5 5.2 4.0 C 07/11/17 dry 22.8 dry 24.0 °C 01/09/18 7.0 1.0 0.6 0.4 °C 07/27/18 dry 21.7 dry 22.2 °C 01/30/19 5.4 1.9 1.8 4.9 °C 07/10/19 23.2 12.2 dry 25.7 °C 01/29/20 6.7 6.5 6.8 8.3 °C 07/07/20 dry 21.0 dry 24.2 °C 01/19/21 6.8 4.5 4.9 6.3 -- -- °C 08/18/21 25.2 23.0 23.4 22.2 19.7 22.3 °C 01/26/22 4.9 3.8 4.0 5.6 6.8 4.2 Verification Event °C 04/04/22 -- -- -- -- 17.7 -- °C 07/05/22 dry 21.2 dry 25.0 21.7 28.6 °C 01/23/23 8.4 6.7 7.3 6.8 12.7 5.2 Turbidity (Field) NTU 07/06/05 dry 15.5 dry 17.2 -- -- NTU 01/09/06 dry 61.3 dry 68.4 NTU 07/12/06 134 dry dry 5.1 NTU 01/16/07 5.8 37.7 39.5 32.3 NTU 07/02/07 dry 27.1 dry 124 NTU 01/29/08 3.4 100.0 15.2 94.9 NTU 07/17/08 dry 16.2 dry 17.7 NTU 01/14/09 12.6 8.87 16.6 15.2 NTU 07/16/09 dry 194 dry 125 NTU 01/04/10 10.2 33.2 18.7 54.7 NTU 07/01/10 dry dry dry 68.2 NTU 01/13/11 20.2 18.6 25.3 11.2 NTU 07/21/11 dry 19.8 -- 18.5 NTU 01/16/12 10.2 52.9 16.9 38.4 NTU 07/09/12 dry 23.7 dry 28.1 NTU 01/14/13 63.1 51.5 11.8 169 NTU 07/09/13 31.6 24.5 11.5 23.8 NTU 01/30/14 12.0 16.8 7.02 23.2 NTU 07/08/14 dry 15.3 dry 25.8 NTU 03/03/15 9.24 122 12.4 75.1 NTU 08/12/15 dry 927 dry >1000 NTU 02/17/16 13.9 212 13.1 >1000 NTU 07/14/16 23.2 122 12.1 25.0 NTU 01/11/17 28.4 58.5 7.09 68.1 NTU 07/11/17 dry 6.13 dry 5.29 NTU 01/09/18 6.82 5.43 2.48 4.85 NTU 07/27/18 dry 57.8 dry 63.6 NTU 01/30/19 20.3 13.0 15.5 16.3 NTU 07/10/19 49.2 8.91 dry 11.2 NTU 01/29/20 11.7 14.8 10.8 14.5 NTU 07/07/20 dry 5.94 dry 6.80 NTU 01/19/21 16.5 11.5 10.8 14.1 -- -- NTU 08/18/21 7.17 87.6 11.5 127 149 114 NTU 01/26/22 8.03 29.6 6.5 26 4.24 34 Verification Event NTU 04/04/22 -- -- -- -- 23.2 -- NTU 07/05/22 dry 33.0 dry 4.41 14.2 8.63 NTU 01/23/23 20.6 29.9 20.9 45.0 7.63 30.5 2of3 April 2023 31405795.004 TABLE 9 Summary of Field Parameters in Surface Water Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina Reporting Sample Upstream Downstream Parameter Units Date SW-1 SW-3 SW-2 SW-4 SW-5 SW-6 Oxidation Reduction mV 01/29/08 165 202 214 182 Potential (Field) mV 07/17/08 dry 75 dry 76 mV 01/14/09 92.8 113.6 139.6 156.6 mV 07/16/09 dry 126.1 dry 45.5 mV 01/04/10 82.5 122.6 176.4 5.8 mV 07/01/10 dry dry dry 140.9 mV 01/13/11 141.9 191.8 224.4 145.8 mV 07/21/11 dry 45.8 -- 55.8 mV 01/16/12 31.9 137.1 218.6 64.6 mV 07/09/12 dry -7.3 dry -4.3 mV 01/14/13 -- -- -- -- mV 07/09/13 67.0 33.4 21.1 71.7 mV 01/30/14 18.1 31.7 96.4 -3.0 mV 07/08/14 dry 43.0 dry 280.2 mV 03/03/15 -0.8 131.9 143.9 73.2 mV 08/12/15 dry 32.0 dry 47.6 mV 02/17/16 140.1 184.6 240.4 288.2 mV 07/14/16 -12.1 70.1 92.7 81.1 mV 01/11/17 201.6 226.5 250.6 216.9 mV 07/11/17 dry 103.0 dry 140.1 mV 01/09/18 234.1 mV 07/27/18 dry 9.0 dry 126.3 mV 01/30/19 -14.3 54.9 51.7 32.1 mV 07/10/19 72.2 122.6 dry 97.5 mV 01/29/20 191.7 210.3 203.4 -95.5 mV 07/07/20 dry 105.4 dry 62.7 mV 01/19/21 -91.8 38.5 63.6 31.4 -- mV 08/18/21 10.9 101.7 96.4 90.2 -- 54.6 mV 01/26/22 82.6 91.1 91.5 118.7 25.3 65.4 Verification Event mV 04/04/22 -- -- -- -- -69.9 -- mV 07/05/22 dry 135.4 dry 72.9 25.6 87.0 mV 01/23/23 -167.1 70.7 130.2 -186.8 46.6 232.5 Dissolved Oxygen (Field) mg/L 01/29/08 11.03 11.61 11.13 11.98 -- -- mg/L 07/17/08 dry 3.33 dry 7.08 mg/L 01/14/09 11.52 12.78 13.94 13.96 mg/L 07/16/09 dry 6.33 dry 7.76 mg/L 01/04/10 12.43 14.99 15.13 15.05 mg/L 07/01/10 dry dry dry 8.71 mg/L 01/13/11 6.81 15.62 15.94 16.10 mg/L 07/21/11 dry 5.70 -- 5.41 mg/L 01/16/12 10.68 13.44 14.39 13.62 mg/L 07/09/12 dry 7.00 dry 9.31 mg/L 01/14/13 -- -- -- -- mg/L 07/09/13 5.31 7.12 5.97 8.51 mg/L 01/30/14 12.43 13.28 14.04 14.86 mg/L 07/08/14 dry 6.05 dry 8.06 mg/L 03/03/15 9.90 11.23 11.65 11.50 mg/L 08/12/15 dry 8.96 dry 8.50 mg/L 02/17/16 8.95 9.52 7.83 10.03 mg/L 07/14/16 2.91 5.55 5.71 6.45 mg/L 01/11/17 9.64 11.55 10.44 12.71 mg/L 07/11/17 dry 6.08 dry 6.01 mg/L 01/09/18 12.68 mg/L 07/27/18 dry 6.08 dry 5.19 mg/L 01/30/19 10.90 13.18 12.95 12.53 mg/L 07/10/19 1.24 6.30 dry 5.70 mg/L 01/29/20 9.86 9.94 9.10 9.10 mg/L 07/07/20 dry 6.71 dry 5.82 mg/L 01/19/21 9.72 12.45 11.92 13.47 -- mg/L 08/18/21 5.13 5.81 5.46 6.39 -- 6.18 mg/L 01/26/22 10.64 12.10 11.54 12.77 4.99 11.50 Verification Event mg/L 04/04/22 -- -- -- -- 8.61 -- mg/L 07/05/22 dry 0.74 dry 3.05 4.21 8.63 mg/L 01/23/23 10.11 9.09 9.57 10.42 6.47 10.72 Notes: 1. SW = surface water monitoring point 2. mg/L = milligrams per liter 3. S.U. = Standard Units 4. NTU = Nephelometric Turbidity Units 5. uS/cm = microsiemens per centimeter 6. "C = centigrade 7. mV = millivolts 8. -- = no data available 9. Data prior to 01/09/06 provided by Joyce Engineering, Inc. 3of3 Figure '0 ` 08 / OL 09/f 09 ■ r� r FACILITY SCALE P, Mw- HOUSE IN 19 748. P I�MW-3 / �\ 738.48 -�I r/• P —740 730 SW-2 MW 4D21 SW- M 72.91 8.91 \ 'sue 29.56 �,— �f AM -2 r.. • .... 726.6 PWS-6 \ MW-5 738.07 " \ V.L. 741.0 � �SB-3 1 7gQ �.-� ER LINES, 1 \ OVEFtHEA� POW 1STING . ❑ \ '♦ Or I 0L_ _I 09 I \J \ I �,O Ammon - a MW-7S I 73 - w \ MW-7D ` 737.72 _ ,... D SE T ES SW-5 0 \L NT WIHIGHPOINT LANDFILL LLC CONSULTANT � 4 SITE LOCATION MAP LEGEND EXISTING 10' CONTOURS - EXISTING 2' CONTOURS PROPERTY LINE STREAM -790 / ...TREELINE - - 780 EXISTING ROAD - - - - PROPOSED OR EXISTING LIMITS OF WASTE MW-3 MONITORING WELL LOCATION IDENTIFICATION AND 738.48 GROUNDWATER ELEVATION ❑ SW-1 SURFACE WATER MONITORING POINT 84.57 PROPOSED MONITORING WELL LOCATION ® BM-1 BENCH MARK IS LFG-1 LANDFILL GAS MONITORING WELL LOCATIONS 0 GAS VENT SB-1 SEDIMENT BASIN I — 760 GROUNDWATER SURFACE CONTOURS GROUNDWATER FLOW SEGMENT USED TO CALCULATE GRADIENT \ i O PWS-6 PORE WATER SAMPLING LOCATION NOTES - 1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET r n 2. GROUNDWATER SURFACE CONTOUR INTERVAL = 10 FEET 3. GROUNDWATER ELEVATIONS MEASURED ON JANUARY 23, 2023. c \ 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. I \ 5. GROUNDWATER CONTOURS LINES SHOW THE WATER TABLE SHAPE AND ELEVATION. THESE I \ I CONTOURS ARE INFERRED LINES FOLLOWING THE GROUNDWATER SURFACE AT A CONSTANT I \ 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. F O\ 6. THE GROUNDWATER ELEVATIONS FOR MW-4D AND MW-7D WERE NOT USED IN THE CONSTRUCTION OF GROUNDWATER CONTOURS. 7. DRAWING BASED ON SITE PLAN PLAN PREPARED BY JOYCE ENGINEERING, INC DATED JULY 7, 2004. \ I 8. UPDATED TOPOGRAPHY IN VICINITY OF LANDFILL PROVIDED FROM AERIAL SURVEY PREPARED F BY COOPER AERIAL SURVEY COMPANY, DATE JANUARY 28, 2023. i 0 200 400 , _ g \ HIGH POINT, NORTH CAROLINA 7.5-MINUTE QUADRANGLE MAP OBTAINED FROM US GEOLOGIC SURVEY, DATE AUGUST 7, 2019. �\ SCALE FEET 2a, c PROJECT CONSTRUCTION AND DEMOLITION DEBRIS LANDFILL AND L RECLAMATION FACILITY GUILFORD COUNTY, NORTH CAROLINA YYYY-MM-DD 2023-04-07 TITLE GROUNDWATER CONTOUR MAP PREPARED SIB JANUARY 23, 2023 DESIGN NTT REVIEW TM PROJECT No. Rev. FIGURE APPROVED GCW 31405795.004 0 0 APPENDIX A Groundwater and Surface Water Sampling Logs Project Name: High Point C&D LF Well ID: W ( Well Diameter: 2 inches Depth to Bottom: ZA . I, feet Pumping Rate: 1%0 ml Imin. DATE: 1I7,3IU 3 GROUNDWATER SAMPLING LOG Project No./Phase No.: 31405q7J5, (goy Sampler(s): Nicolas TejedalJohnathan Serancsics Initial Depth to Water: �, (� feet Water Column Thickness: ��_ feet System Volume: I mL Equipment: Turbidimeter, YSI ProPlus, WL Meter 0� T`M Dedicated 8P. MP-15 1 -Sp. Cond. I ® r `,MINE, • ' mum -MEN Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Pure 0 ' Weather: �l,�r�r, fa-) q6>_�' Signature: QA/QC Sign Off: Date: 431Z67--� Date: L4 /It /2,; i NX %% I ) DATE: (l GROUNDWATER SAMPLING LOG Project Name: High Point C&Q F Project No./Phase No.: -51Wa 5-MFbo4 Well ID: Hu- Z. t h-A K., Sampler(s): Nicolas Tejeda!_J_ohnaMar Serencsics Well Diameter; 2 inches Initial Depth to Water: `j . (06 feet Depth to Bottom: j feet Water Column Thickness:(!, feet Pumping Rate: lup mL/min. System Volume: mL Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated BP. MP-15 Time pH (S.U.) Sp. Cond. (US/cm) Turb (NTU) Dis 02 (mg/L) Temp. (°C) ORP (millivolts) DTW (feet) 11U, 21 (0. n3 )2.1 9 . I S-4-e t -3 y 7A43 i 00 S-4'2 2-0 i `.` O kl 4U.k -11 ! .p Ili .�3 2.t�t � .� •s. 1�,. -s��. 'L ..4 57 43 L t 10 Zcs- Io �. U ` W 3 S. +-f L�. z. 2 -- S. 60 � 6. 2v� U •91 1 . � ��. S. � Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ IIY. Weather: 6� gat -- Signature: QAlQC Sign Off: Date: Date: PAV le DATE: ( 1 EL-1 ! F.3 GROUNDWATER SAMPLING LOG Project Name: High Point C&D LF Project No./Phase No.: 1 Ll p5 •ooy Well ID: J{ALI - 3 Sampler(s): Nicolas Tejeda/ Johnathan Serenesics Well Diameter: 2 inches Initial Depth to Water: feet Depth to Bottom: . �o feet Water Column Thickness: } 3.�L feet Pumping Rate: is.to -� lve mUmin. System Volume: C90 mL Equipment: Turbidimeter, YSl ProPlus, WL Meter Dedicated BP. MP-15 Time pH (S.U.) Sp. Cond. (US/cm) Turb (NTU) Dis 02 (mg/L) Temp. (°((C) ORP (millivolts) DTW --••(feet) 1?0 Ll , caw It c. - {a .s ;1. .LI 1. 1 5. -I ..1 C Z 0 I { 11.3 -1�'+ Z I-q . 2$ �zp6, to �;.c .: D Il.. - f Elos _ix) o t •o$ qb.Z IS•1 .�, t1•� - t-L 1 �•03 l; i{.�� G.7'l ,. -2Zc� 2 1�a .254 11 TO f ,oa s. b 4 .�i' r2 4 o i8 Lz Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Pure @ U Weather:, Signature: f Date: QA1aC Sign Off: Date: r f 11! 2- 3 Darr=: � (7- �-i 1 z!'3 AN GROUNDWATER SAMPLING LOG Project Name: High Point C&D LF Project No./Phase No.: Well ID. MW - H!b Sampler(s): Nloolas Tejeda/ Johnathan Serencsics Well Diameter-, 2 inches Initial Depth to Water: U qd feet Depth to Bottom: Pumping Rate: Equipment: 27- 20 feet jg-t )W mUmin Water Column Thickness: X-9 feet System Volume: 62.5 mL Turbidimeter, YS! ProPlus, WL Meter Dedicated BP. MP-15 - Time pH (S.U.) Sp. Cond. (US/cm) Turks (NTU) Dis 02 (m !L) Temp. (°C) ORP (millivolts)(feet) DTW 1 S .iZ 1 11 . 10 1-S -Z'50. S 1k,4 j, 1 D J .--Z 11..E .(r .1 6 I Z. . OR Z G 12. 2 - $. 1'N 1 4 "? 1 Y,q AV4 . G 3 0• -k 1 4� .. 4 G• 5.$6 1 to. z- �5.z 0 ti, ,a -Z1Z 5.LI .1w , l 11A.3 .5 S-06 1 15 15•_f I'A. M -Z15•LI .O -ktzoa15 .1* ..L 'k 3.15 a . 1� 1-1 », t> - Z 1 q 5.041 � Z0,5 A5.icj )-40. 13.1 b S'j 13.D -ZZ3.'� 5.0-F 1 . GOD 110.0 Jz`G ?-a 13.1 - Z vl, 1� A 61.1 b.1,j 13.Z -Z19•T 51611 d+Jl/VJ05 Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge Cam? \10,5 Weather::5uLoy)Lio Signature: --- Date: 1' Ll /Z5 QAIQC Sign Off: Date: Project Name: High Point C&❑ LF Well ID: AAW- Well Diameter: 2 inches Depth to Bottom: Pumping date: Equipment: 2 -4. N feet IL1 D '� I06 mUmin. DATE: � 9 r GROUNDWATER SAMPLING LOG Project No./Phase No.: -3 iHb5l-�5. oo _ Sampler($): Nicolas Te'eda/ Johnathan Serencsics Initial Depth to Water: '4(t feet Water Column Thickness: i feet System Volume:;1' _ mL Turdidimeter, YSI ProPlus, WL Meter Dedicated BP. MP-15 Time pH (S.U.) Sp. Cond. (us/cm) Turb (NTU) Dis Ox (mg/L.) Temp. (°C) ORP (millivolts) DTW (feet) L 4 t�5 -Si •Z.S �- I ti� --"z 1 Z� ' . Z `14 q 0 .65 74 -e1-4.0 10. 0- Lill "_� 1U.2 Z9 .WkzJ - Z-1 .4 to:94 Ll 40 .3; 1 efcl`. 0154 2. 1 - Z-19 . L 16 9 15 1 Z' a- F 6 � ��a �� o� a- q I Z,"3 - q•$ tit.o --Z► L_15t,a b5- Z a-lZ IZ•0 rZU'1 v. - 1e, 91.0 014( Z.c yI 'r ,'g 6,50 il.01 o.�4 d MOd•Z y ��.i ,'� 0_ zi5tiz -ZL!.z Y Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purqe @ ILA 1S Weather: Signature: I - QAlQC Sign Off: Date: l 12 '&i z Date: 4 r + 1 r 2 DATE: GROUNDWATER SAMPLING LOG Project Name: High Point C&D LF Project No./Phase No.: 31�10� ` 5.Ob Li Well ID: Sampler(s): Nicolas TejedaJJohnathan Serencsics Well Diameter. 2 inches Initial Depth to Water: feet Depth to Bottom: , GU feet Water Column Thickness: iZ�33 feat Pumping Rate: I Zc --> 1U, mLlmin. System Volume: L Zo mL Equipment: Turbidimeter, YSl ProPlus, WL Meter Dedicated BP, MP-15 Time pH S.U. Sp. Cond. (uSlcm) Turb (NTU) Dis 02 (mg1L) Temp. (°C) ORP (millivolts) DTW (feet) .C)r 3m. - 11%, 6•15)4 AID ,Lz ZI('C, -1$. -2 9 SO U-Z Z.0 t,o �Vi S1 -4 '4 �t q51t I.i'-+ f, iCL1. -, o G 2 4q ?-.' 0,9 lh.,` t b-+.o fi. 16,5 OD �. q45. i 4) <T �•t d o `f32 1b It. YI �P.t t 91 -42 Sc5. 4•� 1t t - ,i� ozz4a6 L,2 a• ct.l -I ,w to L 45" z S z Z •Z 6.14r t•% �1-fs•z 6 It, 3it 7-1 5b 26.1. 3 1. 3 1 '�. L r G Z 1;' Iw - I D Z!o 11. 4 -- w 7. v 6,16 L&W6.6 0,71 11, L I-`,,L 10 ' G.S a. 3 1110 (_,--47 L264 111.14.7 0-Z3 11 -I$i._1 -i.$F_ Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge _ n�c s- w o Weather:...�n� r Signature: QAIQC Sign Off: Date: 1 f 713, 03 Date: Ll ) -2 3 DATE: IL,( I LV 2-3 GROUNDWATER SAMPLING LOG Project Name: High Point C&D LF project No./Phase No.: S I y 0 S--� 16.40"1 Well ID: Samplers): Nicolas Tejeda/Johnalhan Serencsics Well Diameter: 2 inches Initial Depth to Water: 3.} feet Depth to Bottom: � feet Water Column Thickness: 3„ feet Pumping Rate: (' 0 mVmin. System Volume: v 64.mL Equipment: Turbidimeter, YSl ProPlus, WL Meter Dedicated SP. MP-15 ®Sp. Cond. ® Dis '� RP • ' Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Pume @ l63F5__ -- Weather: c+rnr„ Signature: QA/QC Sign Off: Date: Date: I !I DATE: I LS3I?"7't -t GROUNDWATER SAMPLING LOG Project Name: High Paint C&D L1= Project No./Phase No.: 51 q05:�f,�{ 604 Well ID: hw - % Sampler(s): Nicolas Tejedal Johnalhan Serencsics Well Diameter: 2 inches Initial Depth to Water: eet Depth to Bottom: `N,.tU feet Water Column Thickness: ,, feet Pumping Rate: 'Nurq mUmin. System Volume: (.�` mL Equipment; Turbidimeter, YSI PrOPlus, WL Meter Dedicated SP, MP-15 . '� •-�oil Comments (weather conditions, color, type of sample, purge -Water management, etc.): Begin Pure @ Ic3G' Weather; -3i \A yog Signature: QAlQC Sign Off: Date:. — Date: � / 11 P-3 M DATE: Z G GROUNDWATER SAMPLING LOG Project Name: Hiph Point C&D LF Project No./Phase No.: _3H65-+16.06W Well ID: Ahw " i Sampler(s): Nicolas Tejeda/ Johnathan Serencsics Well Diameter: 2 inches Initial Depth to Water: S, 40 feet Depth to Bottom: Pumping Rate: 10 +G •C0 feet mUmin. Water Column Thickness: q.$0 feet System Volume: slo mL Equipment: Turbidimeter, YSI ProPlus, WL Meter Dedicated SP, MP-15 Sp. Cond. (US/CM) ORP (millivolts) Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ I UO� Weather: C\ u rt a aF Signature: QA1QC Sign Off: Date: l i MIL'2-3 Date: l/ h /2-3 DATE: Z. 1 GROUNDWATER SAMPLING LOG Project Name: High Point C&U L_P Project No./Phase No.: 3NO5416.0011 Well ID: lot A t,r ` Z Sampler(s): Nicolas Tejedaf Johnathan Serencsics Well Diameter: 2 inches Initial Depth to Water: : • feet Depth to Bottom: `, pt} feet Water Column Thickness: 7m feet Pumping Rate: mLlmin. System Volume: IC,C 'S 11, I'Z mL Equipment: Turbidimeter, Y51 ProPlus, WL Meter Dedicated BP. MP- 15 Time pH (S.U.) Sp. Cond. (uS/cm) Turf (NTU) Dis 02 (mg/L) Temp. VC) ORP (millivolts) DTW (feet) 125�1143 :5i.4 13 1 Z111 Io-,+ 1-f . U .9 1�6InLk AD,0 7,'T`i 16.6 --1%ct5 3.916 ISO c' (.•59 ll 1413.E4 It> t. M-3 3. i 1 0 '&.56 M.1 1 .51 Z, 0 10. - 4$.3 1 5,16 1!,b 6.5f0 '1204 Z.34 16.Q, w M. 319& 115 - 1' IL'. - IqT. & 13ZO b.5 11`�`� i 2,� 3 1(9 e. Comments (weather conditions, color, type of sample, purge -water management, etc.): Begin Purge @ 1Z 4 Weather: Signature: QA/OC Sign Off: ' Date: 11 is ! G,3 Date: b'r jl r 2 3 ILA o l � DATE:' 5 GROUNDWATER SAMPLING LOG .e Project Name: High Poini C&D LF Project Na./Phase No.: _3 i4 0onW Well ID: P. Sampler(s): Nicolas 7eeda/.tohnathanSerencsics Well Diameter: 2 inches Initial Depth to Water: 4 5- feet Depth to Bottom: •-L , a Z feet Water Column Thickness: feet Pumping Rate: 1W--p I mUmin. System Volume: �0 mL k (4 6 Equipment: Turbidimeter, YSI ProPlus, WL Meter rY Time pH (S.U.) Sp. Cond. (US/CM) Turb (NTII! Dis Op (mg/L) Temp. (°C) QRP (millivolts) DTW (feet) �I S 1 l7. 2 . 1Z . Imo. . z, ' yZ- —4.6cl 0.0 �.� 1,740 I'L.5 Z�'�-� �. , G I bpi-r� 6- i Z II7z. z- z L. z tt { 1. Jj ." • ( I2 - Z. J�. Comments (weather conditions, color, type of sa� Begin Purge . 2. V i �iI.PA 1� ment, etc�dd,4,aMI Weather: ),?r , 1 7 `3 C[,-,' ,Aft-L t4. 2p ►.I`111. ` Signature: QA/QC Sign Off: Date: Date: j r DATE: 4 � 202 SAMPLING LOG Project Name: High Point G&D LF Project No./Phase No.: .'�1LI05-+15.009 Sample ID. ji,,,� ( Sampler(s): Nicolas Teje4a/ Johnathan Serenesics Sampling Location: Equipment: YSI, MACH 21000 Ti me i pH S.U. Sp. Cond. us/cm t1l�L7.t Turb. ntu " Temp. aC Vv l R Sampling Location Sketch 00 Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QA/QC Sign Off: G L%{'j. t Date: Date: / I! Z'3 DATE:�r i SURFACE WATER SAMPLING LOG Project Name: High point C&D LF Project No./Phase No.: 31Nt 6711j. odd Sample ID: Sampler(s): Nicolas Tejedal Johnathan 9erencsics Sampling Location: Equipment: YSI, Turbidimeter Time oc) pH S.U. Sp. Cond. US/cm `?U Turb. ntu� Dis. 02 mg/L Temp. °C , ORP m 130 7 Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QAIQC Sign Off: Date: ] Date: � 1 r 1 l7 3 DATE:l SURFACE WATER SAMPLING LOG Project Name: High point C&D LF Project NodPhase No.: :�tiL4 015I` 5,C-)D 1 Sample ID: la -� Sampler(s): ' Os Teje /Johnathan Serencsics Sampling Location: Equipment: YS11 Turbidimeter Time ) 1 pH SM. Sp. Cond. US/cm� Turla. ntu {� Dis. Qz g Temp. OC (} ORP my Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QAIQC Sign Off: i UVAW -L � --t) J Date: 11 2-q�2 1 Date: / 1 DATE: � I Z 5 �E� xI ) SURFACE WATER SAMPLING LOG Project Name: High paint C&D LF Project No./Phase No.: Sample ID: t,i Sampler(s): Nicolas Teje a6/JohnathanSeren ` s Sampling Location: —� Equipment: YSI, Turhidimeter Iluke�, Time '� 10 pH S.U. Sp. Cond. us/cm zoo, Tu rb. ntu Dis. 02 mg1L Temp. 0C V 4RP my I� Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): 1�w + �1 Signature: _ i . t� _ Date: QAIOC Sign Off: � Date:" DATE: 1 i. /,, > I SURFACE WATER SAMPLING LOG Project Name: High point C&D LF Project NoJPhase No.: S1 g054g5•bo� Sample ID: `jlN Sampler(s): Nicolas Tejeda/Johnathan Serencsics Sampling Location: Equipment; YSI, Turbidimeter Time pH S.U. • L�{ Sp. Cond. us/cm� Turb. ntu G�J Dis. Oz mg/L �+ *'( Temp. 0C DRP my Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): Signature: QA/QC Sign Off: Date:((7-C) 2-� Date: J 1Z 3 DATE: G Dy- SURFACE WATER SAMPLING LOG Project Name: High point C&D LF Project No./Phase No.: 3146 5V 5. bN Sample ID: - Sampier(s): Nicolas Tai-e--d3f Johnathan Serancsics Sampling Location: Y- m Equipment: YSI, Turbidimeter Time pH s.u. `1 Sp. Cond. us/cm (_ I� Turb. ntu Dls. 02 mg/L (� Temp. °C. 2. ORP m� �. 3-0 br'o'4VL' 5 Surface Water Sampling Location Sketch Comments (sample methodology, weather conditions, color, silt, etc.): S0 •-5- Signature: Date:L2Z-2- L, AI QAIQC Sign Off: Date: APPENDIX B Groundwater and Surface Water Certificate -of -Analysis, Chain -of - Custodies, and Lab Data Reviews %, eurofins Environment Testing I ANALYTICAL REPORT C PREPARED FOR Attn: Mr. Travis Martinez WSP USA Inc 5B Oak Branch Drive C Greensboro, North Carolina 27407 I Generated 2/21/2023 12:41:34 PM JOB DESCRIPTION High Point High Point JOB NUMBER 752-1612-1 The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins Environment Testing Southeast, LLC Project Manager. av q- Generated 2/21/2023 12:41:34 PM Authorized for release by Amanda Gaines, Project Manager amanda.gainesCcD,et.eurofinsus.com (919)677-1669 Eurofins Savannah is a laboratory within Eurofins Environment Testing Southeast, LLC, a company within Eurofins Environment Testing Group of Companies Page 2 of 98 2/21 /2023 Client: WSP USA Inc Project/Site: High Point Table of Contents Laboratory Job ID: 752-1612-1 C Cover Page .............................................. 1 Table of Contents ......................................... 3 Definitions/Glossary....................................... 4 L Case Narrative ........................................... 6 Detection Summary ........................................ 8 Client Sample Results ...................................... 14 Surrogate Summary ....................................... 49 QC Sample Results ........................................ 51 QC Association Summary ................................... 69 C Lab Chronicle ............................................ 75 Certification Summary ...................................... 81 Method Summary ......................................... 82 Sample Summary ......................................... 83 Chain of Custody .......................................... 84 Receipt Checklists ......................................... 95 Eurofins Raleigh Page 3 of 98 2/21 /2023 Definitions/Glossary Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Qualifiers GC/MS VOA Qualifier Qualifier Description LCS and/or LCSD is outside acceptance limits, low biased. `+ LCS and/or LCSD is outside acceptance limits, high biased. B Compound was found in the blank and sample. H Sample was prepped or analyzed beyond the specified holding time H4 Container indicated preservation, however measured pH was >2 at time of analysis. Analysis date was more than 7 days from sampling date, as required for samples not preserved to pH<2. J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. S1+ Surrogate recovery exceeds control limits, high biased. HPLC/IC E: Qualifier Qualifier Description 4 MS, MSD: The analyte present in the original sample is greater than 4 times the matrix spike concentration; therefore, control limits are not applicable. Metals Qualifier Qualifier Description B Compound was found in the blank and sample. F1 MS and/or MSD recovery exceeds control limits. F2 MS/MSD RPD exceeds control limits J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Glossary Abbreviation These commonly used abbreviations may or may not be present in this report. n Listed under the "Y column to designate that the result is reported on a dry weight basis %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re -analysis, Re -extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level' MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present IDOL Practical Quantitation Limit PRIES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) Eurofins Raleigh Page 4 of 98 2/21 /2023 Definitions/Glossary Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Glossary (Continued) Abbreviation These commonly used abbreviations may or may not be present in this report. TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Raleigh Page 5 of 98 2/21 /2023 Case Narrative Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Laboratory: Eurofins Raleigh Narrative Job Narrative 752-1612-1 Comments No additional comments. Job ID: 752-1612-1 0 Receipt The samples were received on 1/24/2023 12:00 PM and 1/25/2023 2:45 PM. Unless otherwise noted below, the samples arrive good condition, and where required, properly preserved and on ice. The temperatures of the 2 coolers at receipt time were 0.20 and 0.20 C. E: GC/MS VOA Method 8260D: The method blank for analytical batch 752-879 contained 2-Butanone (MEK) and trans-1,2-Dichloroethene abov the method detection limit (MDL). Associated samples were not re -analyzed because results were less than the reporting limit (RL) OR practical quantitation limit (PQL). 2-Butanone MDL recently adjusted to 10 ug/L with a RL of 20 ug/L. Method 8260D: The continuing calibration verification (CCV) associated with batch 752-879 recovered outside acceptance criter low biased, for Chloroethane. A reporting limit (RL) standard was analyzed, and the target analytes are detected. Since the associated samples were non -detect for the analyte(s), the data are reported. Method 8260D: The laboratory control sample and/or the laboratory control sample duplicate (LCS/LCSD) for analytical batch 752-879 recovered outside control limits for the following analyte(s): 2-Butanone (MEK). 2-Butanone (MEK) has been identified a poor performing analyte when analyzed using this method; therefore, re-extraction/re-analysis was not performed. Method 8260D: The LCS and/or LCSD recovered low for 1,2-Dichloropropane, Benzene, Chlorobenzene, Chloroform, Styrene 1,4-Dichlorobenzene. A MRL sample was analyzed and all target compounds were detected. Samples with target non -detects ai reported. Samples with target compounds detected > reporting limit (RL) will be re -analyzed. (LCS 752-879/3) and (LCSD 752-879/4) Method 8260D: Sample 4116-Field Blank (752-1993-11) detected Acetone at 21 ug/L. The sample was reanalyzed out of hold w confirming results. The in hold data were reported. 4116-Field Blank (752-1993-11) Method 8260D: Reanalysis of the following sample(s) was performed outside of the analytical holding time due to failure of quali control parameters in the initial analysis. 4116-MW2 (752-1612-2), 4116-MW6 (752-1612-4), 4116-MW8 (752-1612-5) and 4116-MW7S (752-1993-10) Method 8260D: The MRL sample (MRL 752-1195/4) was double spiked by the instrument. The surrogate recoveries are elevate The data were reported. (MRL 752-1195/4) Method 8260D SIM 14D: The following sample(s) was collected in a properly preserved vial; however, the pH was outside the required criteria when verified by the laboratory. The sample was analyzed outside the 7-day holding time specified for unpreserved samples but within the 14-day holding time specified for preserved samples: 4116-MW6 (752-1612-4). No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. HPLC/IC No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Eurofins Raleigh Page 6 of 98 2/21 /2023 Case Narrative C Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Job ID: 752-1612-1 (Continued) Laboratory: Eurofins Raleigh (Continued) Metals Method 6020B: The method blank for preparation batch 680-760799 and analytical batch 680-761081 contained antimony abov, the method detection limit (MDL). Associated samples were not re -analyzed because results were less than the reporting limit (RL. Method 6020B: The method blank for preparation batch 680-761891 and analytical batch 680-762158 contained antimony abov, the method detection limit (MDL). Associated samples were not re -analyzed because results were less than the reporting limit (RL) OR practical quantitation limit (PQL). No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. General Chemistry Method 300.0: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 752-867 were outside control limits for one or more analytes, see QC Sample Results for detail. Sample matrix interference and/or non -homogeneity are suspected because the associated laboratory control sample (LCS) recovery is within acceptance limits. Method SM 2540C: TDS/CONDUCTIVITY Ratio exceeds requirements 4116-MW5 (752-1612-3) E: Method 300.0: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 752-885 were outside control limits for one or more analytes, see QC Sample Results for detail. Sample matrix interference and/or non -homogeneity are suspected because the associated laboratory control sample (LCS) recovery is within acceptance limits. Method SM 2540C: TDS/Conductivity ratio outside of requirements 4116-MW3 (752-1993-8), 4116-MW4S (752-1993-9), 4116-MW7S (752-1993-10), (752-1743-D-1) and (752-1743-D-1 DU) Method 300.0: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 752-925 were outside control limits for one or more analytes, see QC Sample Results for detail. Sample matrix interference and/or non -homogeneity are suspected because the associated laboratory control sample (LCS) recovery is within acceptance limits. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. VOA Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Eurofins Raleigh Page 7 of 98 2/21 /2023 Detection Summary Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-MW1 Lab Sample ID: 752-1612-1 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type Chloride 15 0.50 0.20 mg/L 1 300.0 Total/NA Sulfate 190 1.0 0.40 mg/L 1 300.0 Total/NA Barium 33 10 4.4 ug/L 1 6010D Total Recoverable Nickel 3.7 J 40 3.3 ug/L 1 6010D Total Recoverable Vanadium 1.6 J 10 1.0 ug/L 1 6010D Total Recoverable Manganese 4.7 J 10 1.3 ug/L 1 6010D Total Recoverable Antimony 0.36 J B 5.0 0.34 ug/L 1 6020B Total Recoverable Total Dissolved Solids 410 50 50 mg/L 1 SM 2540C Total/NA Client Sample ID: 4116-MW2 Lab Sample ID: 752-1612-2 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type 1,4-Dioxane 41 5.0 3.2 ug/L 10 8260D SIM 14D Total/NA Acetone 23 20 10 ug/L 1 8260D Total/NA Benzene 1.5 H 1.0 0.15 ug/L 1 8260D Total/NA Toluene 0.18 J 1.0 0.14 ug/L 1 8260D Total/NA Chloride 110 0.50 0.20 mg/L 1 300.0 Total/NA Sulfate 39 1.0 0.40 mg/L 1 300.0 Total/NA Barium 690 10 4.4 ug/L 1 6010D Total Recoverable Chromium 2.0 J 10 1.1 ug/L 1 6010D Total Recoverable Cobalt 7.3 J 10 1.4 ug/L 1 6010D Total Recoverable Nickel 5.5 J 40 3.3 ug/L 1 6010D Total Recoverable Vanadium 2.0 J 10 1.0 ug/L 1 6010D Total Recoverable Iron 19000 100 20 ug/L 1 6010D Total Recoverable Manganese 6900 10 1.3 ug/L 1 6010D Total Recoverable Antimony 0.39 J B 5.0 0.34 ug/L 1 6020B Total Recoverable Total Dissolved Solids 1200 50 50 mg/L 1 SM 2540C Total/NA Client Sample ID: 4116-MW5 Lab Sample ID: 752-1612-3 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type 1,4-Dioxane 1.5 0.50 0.32 ug/L 1 8260D SIM 14D Total/NA Chloride 2.7 0.50 0.20 mg/L 1 300.0 Total/NA Sulfate 14 1.0 0.40 mg/L 1 300.0 Total/NA Barium 35 10 4.4 ug/L 1 6010D Total Recoverable Vanadium 1.5 J 10 1.0 ug/L 1 6010D Total Recoverable Iron 35000 100 20 ug/L 1 6010D Total Recoverable Manganese 1300 10 1.3 ug/L 1 6010D Total Recoverable Total Dissolved Solids 120 50 50 mg/L 1 SM 2540C Total/NA This Detection Summary does not include radiochemical test results. Page 8 of 98 Eurofins Raleigh 2/21 /2023 Detection Summary Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-MW6 Lab Sample ID: 752-1612-4 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type 1,4-Dioxane 140 H4 5.0 3.2 ug/L 10 8260D SIM 14D Total/NA Acetone 49 20 10 ug/L 1 8260D Total/NA Benzene 2.8 H 1.0 0.15 ug/L 1 8260D Total/NA Toluene 0.17 J 1.0 0.14 ug/L 1 8260D Total/NA Tetrahydrofuran 99 1.0 0.53 ug/L 1 8260D Total/NA Chloride 160 0.50 0.20 mg/L 1 300.0 Total/NA Sulfate 61 1.0 0.40 mg/L 1 300.0 Total/NA Barium 490 10 4.4 ug/L 1 6010D Total Recoverable Chromium 2.7 J 10 1.1 ug/L 1 6010D Total Recoverable Cobalt 14 10 1.4 ug/L 1 6010D Total Recoverable Nickel 8.2 J 40 3.3 ug/L 1 6010D Total Recoverable Vanadium 3.5 J 10 1.0 ug/L 1 6010D Total Recoverable Iron 13000 100 20 ug/L 1 6010D Total Recoverable Manganese 4800 10 1.3 ug/L 1 6010D Total Recoverable Antimony 0.35 J B 5.0 0.34 ug/L 1 6020B Total Recoverable Total Dissolved Solids 1700 50 50 mg/L 1 SM 2540C Total/NA Client Sample ID: 4116-MW8 Lab Sample ID: 752-1612-5 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type 1,4-Dioxane 58 5.0 3.2 ug/L 10 8260D SIM 14D Total/NA Acetone 21 20 10 ug/L 1 8260D Total/NA Benzene 1.6 H 1.0 0.15 ug/L 1 8260D Total/NA Toluene 0.31 J 1.0 0.14 ug/L 1 8260D Total/NA Vinyl chloride 0.96 J 1.0 0.32 ug/L 1 8260D Total/NA Chloride 170 0.50 0.20 mg/L 1 300.0 Total/NA Sulfate 65 1.0 0.40 mg/L 1 300.0 Total/NA Barium 230 10 4.4 ug/L 1 6010D Total Recoverable Cobalt 9.5 J 10 1.4 ug/L 1 6010D Total Recoverable Nickel 8.5 J 40 3.3 ug/L 1 6010D Total Recoverable Vanadium 1.1 J 10 1.0 ug/L 1 6010D Total Recoverable Iron 4300 100 20 ug/L 1 6010D Total Recoverable Manganese 34000 100 13 ug/L 10 6010D Total Recoverable Total Dissolved Solids 1500 50 50 mg/L 1 SM 2540C Total/NA Client Sample ID: 4116-AMW1 Lab Sample ID: 752-1612-6 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type 1,4-Dioxane 23 5.0 3.2 ug/L 10 8260D SIM 14D Total/NA Acetone 13 J 20 10 ug/L 1 8260D Total/NA Benzene 0.62 J "- 1.0 0.15 ug/L 1 8260D Total/NA This Detection Summary does not include radiochemical test results. Page 9 of 98 Eurofins Raleigh 2/21 /2023 Detection Summary Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-AMW1 (Continued) Lab Sample ID: 752-1612-6 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type Chloride 72 0.50 0.20 mg/L 1 300.0 Total/NA Sulfate 46 1.0 0.40 mg/L 1 300.0 Total/NA Barium 360 10 4.4 ug/L 1 6010D Total Recoverable Cobalt 9.5 J 10 1.4 ug/L 1 6010D Total Recoverable Nickel 4.4 J 40 3.3 ug/L 1 6010D Total Recoverable Vanadium 1.9 J 10 1.0 ug/L 1 6010D Total Recoverable Iron 13000 100 20 ug/L 1 6010D Total Recoverable Manganese 5800 10 1.3 ug/L 1 6010D Total Recoverable LTotal Dissolved Solids 840 50 50 mg/L 1 SM 2540C Total/NA Client Sample ID: 4116-AMW2 Lab Sample ID: 752-1612-7 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type 1,4-Dioxane 54 5.0 3.2 ug/L 10 8260D SIM 14D Total/NA Acetone 11 J 20 10 ug/L 1 8260D Total/NA Benzene 0.87 J - 1.0 0.15 ug/L 1 8260D Total/NA Tetrahydrofuran 54 1.0 0.53 ug/L 1 8260D Total/NA Chloride 73 0.50 0.20 mg/L 1 300.0 Total/NA Sulfate 32 1.0 0.40 mg/L 1 300.0 Total/NA Barium 210 10 4.4 ug/L 1 6010D Total Recoverable Chromium 1.3 J 10 1.1 ug/L 1 6010D Total Recoverable Cobalt 9.3 J 10 1.4 ug/L 1 6010D Total Recoverable Nickel 5.2 J 40 3.3 ug/L 1 6010D Total Recoverable Vanadium 1.3 J 10 1.0 ug/L 1 6010D Total Recoverable Iron 2600 100 20 ug/L 1 6010D Total Recoverable Manganese 2700 10 1.3 ug/L 1 6010D Total Recoverable Total Dissolved Solids 810 50 50 mg/L 1 SM 2540C Total/NA Client Sample ID: 4116-P3 Lab Sample ID: 752-1993-1 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type Barium 61 10 4.4 ug/L 1 6010D Total Recoverable Cadmium 2.5 J 5.0 0.44 ug/L 1 6010D Total Recoverable Chromium 4.4 J 10 1.1 ug/L 1 6010D Total Recoverable Cobalt 2.3 J 10 1.4 ug/L 1 6010D Total Recoverable Copper 8.9 J 20 3.2 ug/L 1 6010D Total Recoverable Nickel 4.6 J 40 3.3 ug/L 1 6010D Total Recoverable This Detection Summary does not include radiochemical test results. Page 10 of 98 Eurofins Raleigh 2/21 /2023 Detection Summary Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-P3 (Continued) Lab Sample ID: 752-1993-1 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type Vanadium 11 10 1.0 ug/L 1 6010D Total Recoverable Iron 3600 100 20 ug/L 1 6010D Total Recoverable Manganese 390 10 1.3 ug/L 1 6010D Total Recoverable Antimony 0.87 J F2 F1 B 5.0 0.34 ug/L 1 6020B Total Recoverable Client Sample ID: 4116-SW1 Lab Sample ID: 752-1993-2 Analyte Result Qualifier RL MDL Unit DII Fac D Method Prep Type Barium 40 10 4.4 ug/L 1 6010D Total Recoverable Chromium 1.1 J 10 1.1 ug/L 1 6010D Total Recoverable Copper 5.0 J 20 3.2 ug/L 1 6010D Total Recoverable Vanadium 3.7 J 10 1.0 ug/L 1 6010D Total Recoverable Zinc 19 J 20 8.7 ug/L 1 6010D Total Recoverable Antimony 0.84 J B 5.0 0.34 ug/L 1 6020B Total Recoverable Client Sample ID: 4116-SW2 Lab Sample ID: 752-1993-3 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type 1,4-Dioxane 1.4 0.50 0.32 ug/L 1 8260D SIM 14D Total/NA Barium 43 10 4.4 ug/L 1 6010D Total Recoverable Copper 3.2 J 20 3.2 ug/L 1 6010D Total Recoverable Antimony 0.61 J B 5.0 0.34 ug/L 1 6020B Total Recoverable Client Sample ID: 4116-SW3 Lab Sample ID: 752-1993-4 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type 1,4-Dioxane 1.7 0.50 0.32 ug/L 1 8260D SIM 14D Total/NA 2-Butanone (MEK) 10 J B *+ 20 10 ug/L 1 8260D Total/NA Acetone 12 J 20 10 ug/L 1 8260D Total/NA Methylene Chloride 0.25 J 1.0 0.23 ug/L 1 8260D Total/NA Barium 56 10 4.4 ug/L 1 6010D Total Recoverable Chromium 2.7 J 10 1.1 ug/L 1 6010D Total Recoverable Copper 5.5 J 20 3.2 ug/L 1 6010D Total Recoverable Vanadium 6.1 J 10 1.0 ug/L 1 6010D Total Recoverable Antimony 0.46 J B 5.0 0.34 ug/L 1 6020B Total Recoverable This Detection Summary does not include radiochemical test results. Page 11 of 98 Eurofins Raleigh 2/21 /2023 Detection Summary Client: WSP USA Inc Project/Site: High Point Client Sample ID: 4116-SW4 Analyte 1,4-Dioxane Barium Chromium Copper Vanadium Antimony L Client Sample ID: 4116-SW5 Analyte 1,4-Dioxane Acetone Barium Cobalt Nickel Vanadium Antimony Client Sample ID: 4116-SW6 Result Qualifier RL MDL Unit 2.0 0.50 0.32 ug/L 50 10 4.4 ug/L 2.3 J 10 1.1 ug/L 4.7 J 20 3.2 ug/L 5.3 J 10 1.0 ug/L 0.40 J B 5.0 0.34 ug/L Result Qualifier RL MDL Unit 14 5.0 3.2 ug/L 12 J 20 10 ug/L 160 10 4.4 ug/L 15 10 1.4 ug/L 4.5 J 40 3.3 ug/L 2.4 J 10 1.0 ug/L 0.34 J B 5.0 0.34 ug/L F Job ID: 752-1612-1 Lab Sample ID: 752-1993-5 Dil Fac D Method Prep Type 1 8260D SIM 14D Total/NA 1 6010D Total Recoverable 1 6010D Total Recoverable 1 6010D Total Recoverable 1 6010D Total Recoverable 1 60206 Total Recoverable Lab Sample ID: 752-1993-6 Dil Fac D Method Prep Type 10 8260D SIM 14D Total/NA 1 8260D Total/NA 1 6010D Total Recoverable 1 6010D Total Recoverable 1 6010D Total Recoverable 1 6010D Total Recoverable 1 6020B Total Recoverable Lab Sample ID: 752-1993-7 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type 1,4-Dioxane 2.1 0.50 0.32 ug/L 1 8260D SIM 14D Total/NA Acetone 11 J 20 10 ug/L 1 8260D Total/NA Barium 54 10 4.4 ug/L 1 6010D Total Recoverable Chromium 3.2 J 10 1.1 ug/L 1 6010D Total Recoverable Copper 6.0 J 20 3.2 ug/L 1 6010D Total Recoverable Vanadium 7.0 J 10 1.0 ug/L 1 6010D Total Recoverable Antimony 0.39 J B 5.0 0.34 ug/L 1 6020B Total Recoverable Client Sample ID: 4116-MW3 Lab Sample ID: 752-1993-8 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type 1,4-Dioxane 2.3 0.50 0.32 ug/L 1 8260D SIM 14D Total/NA Chloride 14 5.0 2.2 mg/L 1 300.0 Total/NA Sulfate 9.7 5.0 2.9 mg/L 1 300.0 Total/NA Barium 51 10 4.4 ug/L 1 6010D Total Recoverable Chromium 4.8 J 10 1.1 ug/L 1 6010D Total Recoverable Cobalt 2.2 J 10 1.4 ug/L 1 6010D Total Recoverable This Detection Summary does not include radiochemical test results. Page 12 of 98 Eurofins Raleigh 2/21 /2023 Detection Summary Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-MW3 (Continued) Lab Sample ID: 752-1993-8 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type Vanadium 1.4 J 10 1.0 ug/L 1 601OD Total Recoverable Iron 4700 100 20 ug/L 1 6010D Total Recoverable Manganese 150 10 1.3 ug/L 1 6010D Total Recoverable Total Dissolved Solids 160 50 50 mg/L 1 SM 2540C Total/NA Client Sample ID: 4116-MW4S Lab Sample ID: 752-1993-9 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type 1,4-Dioxane 2.3 0.50 0.32 ug/L 1 8260D SIM 14D Total/NA Chloride 17 5.0 2.2 mg/L 1 300.0 Total/NA Sulfate 26 5.0 2.9 mg/L 1 300.0 Total/NA Barium 91 10 4.4 ug/L 1 6010D Total Recoverable Vanadium 1.4 J 10 1.0 ug/L 1 6010D Total Recoverable Iron 810 100 20 ug/L 1 6010D Total Recoverable Manganese 33 10 1.3 ug/L 1 6010D Total Recoverable Total Dissolved Solids 840 50 50 mg/L 1 SM 2540C Total/NA Client Sample ID: 4116-MW7S Lab Sample ID: 752-1993-10 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type 1,4-Dioxane 23 5.0 3.2 ug/L 10 8260D SIM 14D Total/NA Benzene 1.2 H 1.0 0.15 ug/L 1 8260D Total/NA Methylene Chloride 0.58 J 1.0 0.23 ug/L 1 8260D Total/NA Chloride 82 5.0 2.2 mg/L 1 300.0 Total/NA Sulfate 46 5.0 2.9 mg/L 1 300.0 Total/NA Barium 790 10 4.4 ug/L 1 6010D Total Recoverable Nickel 20 J 40 3.3 ug/L 1 6010D Total Recoverable Vanadium 9.3 J 10 1.0 ug/L 1 6010D Total Recoverable Iron 65 J 100 20 ug/L 1 6010D Total Recoverable Manganese 180 10 1.3 ug/L 1 6010D Total Recoverable Total Dissolved Solids 140 50 50 mg/L 1 SM 2540C Total/NA Client Sample ID: 4116-Field Blank Lab Sample ID: 752-1993-11 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type Acetone 21 20 10 ug/L 1 8260D Total/NA Client Sample ID: 4116-Trip Blank Lab Sample ID: 752-1993-12 Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type Chloroform 0.33 J *- 1.0 0.18 ug/L 1 8260D Total/NA Methylene Chloride 0.26 J 1.0 0.23 ug/L 1 8260D Total/NA This Detection Summary does not include radiochemical test results. Eurofins Raleigh Page 13 of 98 2/21 /2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-MW1 Lab Sample ID: 752-1612-1 Date Collected: 01/23/23 09:04 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,4-Dioxane <0.32 0.50 0.32 ug/L 02/02/2315:12 1 • Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 105 70 - 130 02102123 15:12 1 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,1,1,2-Tetrachloroethane <0.17 1.0 0.17 ug/L - 02/02/23 22:32 1 1,1,1-Trichloroethane <0.12 1.0 0.12 ug/L 02/02/23 22:32 1 1,1,2,2-Tetrachloroethane <0.28 1.0 0.28 ug/L 02/02/23 22:32 1 1,1,2-Trichloroethane <0.14 1.0 0.14 ug/L 02/02/23 22:32 1 1,1-Dichloroethane <0.13 1.0 0.13 ug/L 02/02/23 22:32 1 1,1-Dichloroethene <0.21 1.0 0.21 ug/L 02/02/23 22:32 1 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/02/23 22:32 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/02/23 22:32 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/02/23 22:32 1 1,2-Dichloropropane <0.10 * 1.0 0.10 ug/L 02/02/23 22:32 1 2-Butanone (MEK) <10 *+ 20 10 ug/L 02/02/23 22:32 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/02/23 22:32 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/02/23 22:32 1 Acetone <10 20 10 ug/L 02/02/23 22:32 1 Acrylonitrile <3.5 10 3.5 ug/L 02/02/23 22:32 1 Benzene <0.15 *- 1.0 0.15 ug/L 02/02/23 22:32 1 Bromoform <0.22 1.0 0.22 ug/L 02/02/23 22:32 1 Bromomethane <0.14 1.0 0.14 ug/L 02/02/23 22:32 1 Carbon disulfide <1.5 5.0 1.5 ug/L 02/02/23 22:32 1 Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/02/23 22:32 1 Chlorobenzene <0.17 `- 1.0 0.17 ug/L 02/02/23 22:32 1 Chloroethane <0.23 1.0 0.23 ug/L 02/02/23 22:32 1 Chloroform <0.18 *- 1.0 0.18 ug/L 02/02/23 22:32 1 Chloromethane <0.13 1.0 0.13 ug/L 02/02/23 22:32 1 cis-1,2-Dichloroethene <0.15 1.0 0.15 ug/L 02/02/23 22:32 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/02/23 22:32 1 Bromochloromethane <0.48 1.0 0.48 ug/L 02/02/23 22:32 1 Dibromochloromethane <0.17 1.0 0.17 ug/L 02/02/23 22:32 1 Bromodichloromethane <0.17 1.0 0.17 ug/L 02/02/23 22:32 1 Ethylbenzene <0.13 1.0 0.13 ug/L 02/02/23 22:32 1 Iodomethane <1.7 5.0 1.7 ug/L 02/02/23 22:32 1 Methylene Chloride <0.23 1.0 0.23 ug/L 02/02/23 22:32 1 Styrene <0.11 `- 1.0 0.11 ug/L 02/02/23 22:32 1 Tetrachloroethene <0.17 1.0 0.17 ug/L 02/02/23 22:32 1 Toluene <0.14 1.0 0.14 ug/L 02/02/23 22:32 1 trans- 1,2-Dichloroethene <0.21 1.0 0.21 ug/L 02/02/23 22:32 1 trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/02/23 22:32 1 trans- 1,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/02/23 22:32 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/02/23 22:32 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/02/23 22:32 1 Vinyl chloride <0.32 1.0 0.32 ug/L 02/02/23 22:32 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/02/23 22:32 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/02/23 22:32 1 Eurofins Raleigh Page 14 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-MW1 Lab Sample ID: 752-1612-1 Date Collected: 01/23/23 09:04 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/02/23 22:32 1 1,4-Dichlorobenzene <0.19 *- 1.0 0.19 ug/L 02/02/23 22:32 1 �. Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/02/23 22:32 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/02/23 22:32 1 Tetrahydrofuran <0.53 1.0 0.53 ug/L 02/02/23 22:32 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 104 53 - 136 02102123 22:32 1 Dibromofluoromethane (Surr) 109 67- 129 02/02/23 22:32 1 Toluene-d8 (Surr) 110 59 - 134 02/02/23 22:32 1 Method: EPA 300.0 - Anions, Ion Chromatography Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Chloride 15 0.50 0.20 mg/L 02/16/2319:46 1 Sulfate 190 1.0 0.40 mg/L 02/16/2319:46 1 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 01/27/23 06:03 01/27/23 14:02 1 Barium 33 10 4.4 ug/L 01/27/23 06:03 01/27/23 14:02 1 Beryllium <0.30 4.0 0.30 ug/L 01/27/23 06:03 01/27/23 14:02 1 Cadmium <0.44 5.0 0.44 ug/L 01/27/23 06:03 01/27/23 14:02 1 Chromium <1.1 10 1.1 ug/L 01/27/23 06:03 01/27/23 14:02 1 Cobalt <1.4 10 1.4 ug/L 01/27/23 06:03 01/27/23 14:02 1 Copper <3.2 20 3.2 ug/L 01/27/23 06:03 01/27/23 14:02 1 Selenium <10 20 10 ug/L 01/27/23 06:03 01/27/23 14:02 1 Lead <6.6 10 6.6 ug/L 01/27/23 06:03 01/27/23 14:02 1 Nickel 3.7 J 40 3.3 ug/L 01/27/23 06:03 01/27/23 14:02 1 Silver <1.5 10 1.5 ug/L 01/27/23 06:03 01/27/23 14:02 1 Vanadium 1.6 J 10 1.0 ug/L 01/27/23 06:03 01/27/23 14:02 1 Zinc <8.7 20 8.7 ug/L 01/27/23 06:03 01/27/23 14:02 1 Iron <20 100 20 ug/L 01/27/23 06:03 01/27/23 14:02 1 Manganese 4.7 J 10 1.3 ug/L 01/27/23 06:03 01/27/23 14:02 1 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony 0.36 J B 5.0 0.34 ug/L 01/27/23 06:03 01/27/23 16:24 1 Thallium <0.26 1.0 0.26 ug/L 01/27/23 06:03 01/27/23 16:24 1 Method: SW846 7470A - Mercury (CVAA) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Mercury <0.080 0.20 0.080 ug/L 01/30/2312:33 01/31/2310:48 1 General Chemistry Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Total Dissolved Solids (SM 2540C) 410 50 50 mg/L 01/30/23 13:36 1 Eurofins Raleigh Page 15 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-MW2 Lab Sample ID: 752-1612-2 Date Collected: 01/23/23 12:35 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,4-Dioxane 41 5.0 3.2 ug/L 02/02/2317:55 10 • Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 105 70 - 130 02102123 17:55 10 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,1,1,2-Tetrachloroethane <0.17 1.0 0.17 ug/L - 02/02/23 23:04 1 1,1,1-Trichloroethane <0.12 1.0 0.12 ug/L 02/02/23 23:04 1 1,1,2,2-Tetrachloroethane <0.28 1.0 0.28 ug/L 02/02/23 23:04 1 1,1,2-Trichloroethane <0.14 1.0 0.14 ug/L 02/02/23 23:04 1 1,1-Dichloroethane <0.13 1.0 0.13 ug/L 02/02/23 23:04 1 1,1-Dichloroethene <0.21 1.0 0.21 ug/L 02/02/23 23:04 1 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/02/23 23:04 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/02/23 23:04 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/02/23 23:04 1 1,2-Dichloropropane <0.10 * 1.0 0.10 ug/L 02/02/23 23:04 1 2-Butanone (MEK) <10 *+ 20 10 ug/L 02/02/23 23:04 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/02/23 23:04 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/02/23 23:04 1 Acetone 23 20 10 ug/L 02/02/23 23:04 1 Acrylonitrile <3.5 10 3.5 ug/L 02/02/23 23:04 1 Benzene 1.5 H 1.0 0.15 ug/L 02/16/23 01:41 1 Bromoform <0.22 1.0 0.22 ug/L 02/02/23 23:04 1 Bromomethane <0.14 1.0 0.14 ug/L 02/02/23 23:04 1 Carbon disulfide <1.5 5.0 1.5 ug/L 02/02/23 23:04 1 Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/02/23 23:04 1 Chlorobenzene <0.17 `- 1.0 0.17 ug/L 02/02/23 23:04 1 Chloroethane <0.23 1.0 0.23 ug/L 02/02/23 23:04 1 Chloroform <0.18 *- 1.0 0.18 ug/L 02/02/23 23:04 1 Chloromethane <0.13 1.0 0.13 ug/L 02/02/23 23:04 1 cis-1,2-Dichloroethene <0.15 1.0 0.15 ug/L 02/02/23 23:04 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/02/23 23:04 1 Bromochloromethane <0.48 1.0 0.48 ug/L 02/02/23 23:04 1 Dibromochloromethane <0.17 1.0 0.17 ug/L 02/02/23 23:04 1 Bromodichloromethane <0.17 1.0 0.17 ug/L 02/02/23 23:04 1 Ethylbenzene <0.13 1.0 0.13 ug/L 02/02/23 23:04 1 Iodomethane <1.7 5.0 1.7 ug/L 02/02/23 23:04 1 Methylene Chloride <0.23 1.0 0.23 ug/L 02/02/23 23:04 1 Styrene <0.11 `- 1.0 0.11 ug/L 02/02/23 23:04 1 Tetrachloroethene <0.17 1.0 0.17 ug/L 02/02/23 23:04 1 Toluene 0.18 J 1.0 0.14 ug/L 02/02/23 23:04 1 trans- 1,2-Dichloroethene <0.21 1.0 0.21 ug/L 02/02/23 23:04 1 trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/02/23 23:04 1 trans- 1,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/02/23 23:04 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/02/23 23:04 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/02/23 23:04 1 Vinyl chloride <0.32 1.0 0.32 ug/L 02/02/23 23:04 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/02/23 23:04 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/02/23 23:04 1 Eurofins Raleigh Page 16 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-MW2 Lab Sample ID: 752-1612-2 Date Collected: 01/23/23 12:35 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/02/23 23:04 1 1,4-Dichlorobenzene <0.19 *- 1.0 0.19 ug/L 02/02/23 23:04 1 �. Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/02/23 23:04 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/02/23 23:04 1 Tetrahydrofuran <0.53 1.0 0.53 ug/L 02/02/23 23:04 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 106 53 - 136 02102123 23:04 1 4-Bromofluorobenzene (Surr) 130 53 - 136 02/16/23 01:41 1 Dibromofluoromethane (Surr) 108 67- 129 02/02/23 23:04 1 Dibromofluoromethane (Surr) 94 67- 129 02116123 01:41 1 Toluene-d8 (Surr) 107 59 - 134 02102123 23:04 1 Toluene-d8 (Surr) 120 59 - 134 02116123 01:41 1 Method: EPA 300.0 - Anions, Ion Chromatography Analyte Result Qualifier RL MDL Unit D Prepared Analyzed DII Fac Chloride 110 0.50 0.20 mg/L 02/16/2319:59 1 Sulfate 39 1.0 0.40 mg/L 02/16/2319:59 1 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 01/27/23 06:03 01/27/23 14:10 1 Barium 690 10 4.4 ug/L 01/27/23 06:03 01/27/23 14:10 1 Beryllium <0.30 4.0 0.30 ug/L 01/27/23 06:03 01/27/23 14:10 1 Cadmium <0.44 5.0 0.44 ug/L 01/27/23 06:03 01/27/23 14:10 1 Chromium 2.0 J 10 1.1 ug/L 01/27/23 06:03 01/27/23 14:10 1 Cobalt 7.3 J 10 1.4 ug/L 01/27/23 06:03 01/27/23 14:10 1 Copper <3.2 20 3.2 ug/L 01/27/23 06:03 01/27/23 14:10 1 Selenium <10 20 10 ug/L 01/27/23 06:03 01/27/23 14:10 1 Lead <6.6 10 6.6 ug/L 01/27/23 06:03 01/27/23 14:10 1 Nickel 5.5 J 40 3.3 ug/L 01/27/23 06:03 01/27/23 14:10 1 Silver <1.5 10 1.5 ug/L 01/27/23 06:03 01/27/23 14:10 1 Vanadium 2.0 J 10 1.0 ug/L 01/27/23 06:03 01/27/23 14:10 1 Zinc <8.7 20 8.7 ug/L 01/27/23 06:03 01/27/23 14:10 1 Iron 19000 100 20 ug/L 01/27/23 06:03 01/27/23 14:10 1 Manganese 6900 10 1.3 ug/L 01/27/23 06:03 01/27/23 14:10 1 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony 0.39 J B 5.0 0.34 ug/L 01/27/23 06:03 01/27/23 16:36 1 Thallium <0.26 1.0 0.26 ug/L 01/27/23 06:03 01/27/23 16:36 1 Method: SW846 7470A - Mercury (CVAA) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Mercury <0.080 0.20 0.080 ug/L 01/30/2312:33 01/31/2310:50 1 General Chemistry Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Total Dissolved Solids (SM 2540C) 1200 50 50 mg/L 01/30/23 13:36 1 Eurofins Raleigh Page 17 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-MW5 Lab Sample ID: 752-1612-3 Date Collected: 01/23/23 15:30 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,4-Dioxane 1.5 0.50 0.32 ug/L 02/02/2315:40 1 • Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 100 70 - 130 02102123 15:40 1 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,1,1,2-Tetrachloroethane <0.17 1.0 0.17 ug/L - 02/02/23 23:35 1 1,1,1-Trichloroethane <0.12 1.0 0.12 ug/L 02/02/23 23:35 1 1,1,2,2-Tetrachloroethane <0.28 1.0 0.28 ug/L 02/02/23 23:35 1 1,1,2-Trichloroethane <0.14 1.0 0.14 ug/L 02/02/23 23:35 1 1,1-Dichloroethane <0.13 1.0 0.13 ug/L 02/02/23 23:35 1 1,1-Dichloroethene <0.21 1.0 0.21 ug/L 02/02/23 23:35 1 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/02/23 23:35 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/02/23 23:35 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/02/23 23:35 1 1,2-Dichloropropane <0.10 * 1.0 0.10 ug/L 02/02/23 23:35 1 2-Butanone (MEK) <10 *+ 20 10 ug/L 02/02/23 23:35 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/02/23 23:35 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/02/23 23:35 1 Acetone <10 20 10 ug/L 02/02/23 23:35 1 Acrylonitrile <3.5 10 3.5 ug/L 02/02/23 23:35 1 Benzene <0.15 *- 1.0 0.15 ug/L 02/02/23 23:35 1 Bromoform <0.22 1.0 0.22 ug/L 02/02/23 23:35 1 Bromomethane <0.14 1.0 0.14 ug/L 02/02/23 23:35 1 Carbon disulfide <1.5 5.0 1.5 ug/L 02/02/23 23:35 1 Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/02/23 23:35 1 Chlorobenzene <0.17 `- 1.0 0.17 ug/L 02/02/23 23:35 1 Chloroethane <0.23 1.0 0.23 ug/L 02/02/23 23:35 1 Chloroform <0.18 *- 1.0 0.18 ug/L 02/02/23 23:35 1 Chloromethane <0.13 1.0 0.13 ug/L 02/02/23 23:35 1 cis-1,2-Dichloroethene <0.15 1.0 0.15 ug/L 02/02/23 23:35 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/02/23 23:35 1 Bromochloromethane <0.48 1.0 0.48 ug/L 02/02/23 23:35 1 Dibromochloromethane <0.17 1.0 0.17 ug/L 02/02/23 23:35 1 Bromodichloromethane <0.17 1.0 0.17 ug/L 02/02/23 23:35 1 Ethylbenzene <0.13 1.0 0.13 ug/L 02/02/23 23:35 1 Iodomethane <1.7 5.0 1.7 ug/L 02/02/23 23:35 1 Methylene Chloride <0.23 1.0 0.23 ug/L 02/02/23 23:35 1 Styrene <0.11 `- 1.0 0.11 ug/L 02/02/23 23:35 1 Tetrachloroethene <0.17 1.0 0.17 ug/L 02/02/23 23:35 1 Toluene <0.14 1.0 0.14 ug/L 02/02/23 23:35 1 trans- 1,2-Dichloroethene <0.21 1.0 0.21 ug/L 02/02/23 23:35 1 trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/02/23 23:35 1 trans- 1,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/02/23 23:35 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/02/23 23:35 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/02/23 23:35 1 Vinyl chloride <0.32 1.0 0.32 ug/L 02/02/23 23:35 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/02/23 23:35 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/02/23 23:35 1 Eurofins Raleigh Page 18 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-MW5 Lab Sample ID: 752-1612-3 Date Collected: 01/23/23 15:30 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/02/23 23:35 1 1,4-Dichlorobenzene <0.19 *- 1.0 0.19 ug/L 02/02/23 23:35 1 �. Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/02/23 23:35 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/02/23 23:35 1 Tetrahydrofuran <0.53 1.0 0.53 ug/L 02/02/23 23:35 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 104 53 - 136 02102123 23:35 1 Dibromofluoromethane (Surr) 109 67- 129 02/02/23 23:35 1 Toluene-d8 (Surr) 109 59 - 134 02/02/23 23:35 1 Method: EPA 300.0 - Anions, Ion Chromatography Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Chloride 2.7 0.50 0.20 mg/L 02/16/23 20:12 1 Sulfate 14 1.0 0.40 mg/L 02/16/23 20:12 1 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 01/27/23 06:03 01/27/23 14:12 1 Barium 35 10 4.4 ug/L 01/27/23 06:03 01/27/23 14:12 1 Beryllium <0.30 4.0 0.30 ug/L 01/27/23 06:03 01/27/23 14:12 1 Cadmium <0.44 5.0 0.44 ug/L 01/27/23 06:03 01/27/23 14:12 1 Chromium <1.1 10 1.1 ug/L 01/27/23 06:03 01/27/23 14:12 1 Cobalt <1.4 10 1.4 ug/L 01/27/23 06:03 01/27/23 14:12 1 Copper <3.2 20 3.2 ug/L 01/27/23 06:03 01/27/23 14:12 1 Selenium <10 20 10 ug/L 01/27/23 06:03 01/27/23 14:12 1 Lead <6.6 10 6.6 ug/L 01/27/23 06:03 01/27/23 14:12 1 Nickel <3.3 40 3.3 ug/L 01/27/23 06:03 01/27/23 14:12 1 Silver <1.5 10 1.5 ug/L 01/27/23 06:03 01/27/23 14:12 1 Vanadium 1.5 J 10 1.0 ug/L 01/27/23 06:03 01/27/23 14:12 1 Zinc <8.7 20 8.7 ug/L 01/27/23 06:03 01/27/23 14:12 1 Iron 35000 100 20 ug/L 01/27/23 06:03 01/27/23 14:12 1 Manganese 1300 10 1.3 ug/L 01/27/23 06:03 01/27/23 14:12 1 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony <0.34 5.0 0.34 ug/L 01/27/23 06:03 01/27/23 16:40 1 Thallium <0.26 1.0 0.26 ug/L 01/27/23 06:03 01/27/23 16:40 1 Method: SW846 7470A - Mercury (CVAA) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Mercury <0.080 0.20 0.080 ug/L 01/30/2313:47 01/31/2311:01 1 General Chemistry Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Total Dissolved Solids (SM 2540C) 120 50 50 mg/L 01/30/23 13:36 1 Eurofins Raleigh Page 19 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-MW6 Lab Sample ID: 752-1612-4 Date Collected: 01/23/23 11:10 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,4-Dioxane 140 H4 5.0 3.2 ug/L 02/02/2318:23 10 • Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 106 70 - 130 02102123 18:23 10 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,1,1,2-Tetrachloroethane <0.17 1.0 0.17 ug/L - 02/03/23 00:06 1 1,1,1-Trichloroethane <0.12 1.0 0.12 ug/L 02/03/23 00:06 1 1,1,2,2-Tetrachloroethane <0.28 1.0 0.28 ug/L 02/03/23 00:06 1 1,1,2-Trichloroethane <0.14 1.0 0.14 ug/L 02/03/23 00:06 1 1,1-Dichloroethane <0.13 1.0 0.13 ug/L 02/03/23 00:06 1 1,1-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 00:06 1 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/03/23 00:06 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/03/23 00:06 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/03/23 00:06 1 1,2-Dichloropropane <0.10 * 1.0 0.10 ug/L 02/03/23 00:06 1 2-Butanone (MEK) <10 *+ 20 10 ug/L 02/03/23 00:06 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/03/23 00:06 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/03/23 00:06 1 Acetone 49 20 10 ug/L 02/03/23 00:06 1 Acrylonitrile <3.5 10 3.5 ug/L 02/03/23 00:06 1 Benzene 2.8 H 1.0 0.15 ug/L 02/16/23 02:13 1 Bromoform <0.22 1.0 0.22 ug/L 02/03/23 00:06 1 Bromomethane <0.14 1.0 0.14 ug/L 02/03/23 00:06 1 Carbon disulfide <1.5 5.0 1.5 ug/L 02/03/23 00:06 1 Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/03/23 00:06 1 Chlorobenzene <0.17 `- 1.0 0.17 ug/L 02/03/23 00:06 1 Chloroethane <0.23 1.0 0.23 ug/L 02/03/23 00:06 1 Chloroform <0.18 *- 1.0 0.18 ug/L 02/03/23 00:06 1 Chloromethane <0.13 1.0 0.13 ug/L 02/03/23 00:06 1 cis-1,2-Dichloroethene <0.15 1.0 0.15 ug/L 02/03/23 00:06 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/03/23 00:06 1 Bromochloromethane <0.48 1.0 0.48 ug/L 02/03/23 00:06 1 Dibromochloromethane <0.17 1.0 0.17 ug/L 02/03/23 00:06 1 Bromodichloromethane <0.17 1.0 0.17 ug/L 02/03/23 00:06 1 Ethylbenzene <0.13 1.0 0.13 ug/L 02/03/23 00:06 1 Iodomethane <1.7 5.0 1.7 ug/L 02/03/23 00:06 1 Methylene Chloride <0.23 1.0 0.23 ug/L 02/03/23 00:06 1 Styrene <0.11 `- 1.0 0.11 ug/L 02/03/23 00:06 1 Tetrachloroethene <0.17 1.0 0.17 ug/L 02/03/23 00:06 1 Toluene 0.17 J 1.0 0.14 ug/L 02/03/23 00:06 1 trans- 1,2-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 00:06 1 trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/03/23 00:06 1 trans- 1,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/03/23 00:06 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/03/23 00:06 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/03/23 00:06 1 Vinyl chloride <0.32 1.0 0.32 ug/L 02/03/23 00:06 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/03/23 00:06 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/03/23 00:06 1 Eurofins Raleigh Page 20 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-MW6 Lab Sample ID: 752-1612-4 Date Collected: 01/23/23 11:10 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/03/23 00:06 1 1,4-Dichlorobenzene <0.19 *- 1.0 0.19 ug/L 02/03/23 00:06 1 �. Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/03/23 00:06 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/03/23 00:06 1 Tetrahydrofuran 99 1.0 0.53 ug/L 02/03/23 00:06 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 108 53 - 136 02103123 00:06 1 4-Bromofluorobenzene (Surr) 134 53 - 136 02/16/23 02:13 1 Dibromofluoromethane (Surr) 104 67- 129 02/03/23 00:06 1 Dibromofluoromethane (Surr) 95 67- 129 02116123 02:13 1 Toluene-d8 (Surr) 108 59 - 134 02103123 00:06 1 Toluene-d8 (Surr) 121 59 - 134 02116123 02:13 1 Method: EPA 300.0 - Anions, Ion Chromatography Analyte Result Qualifier RL MDL Unit D Prepared Analyzed DII Fac Chloride 160 0.50 0.20 mg/L 02/16/23 20:25 1 Sulfate 61 1.0 0.40 mg/L 02/16/23 20:25 1 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 01/27/23 06:03 01/27/23 14:15 1 Barium 490 10 4.4 ug/L 01/27/23 06:03 01/27/23 14:15 1 Beryllium <0.30 4.0 0.30 ug/L 01/27/23 06:03 01/27/23 14:15 1 Cadmium <0.44 5.0 0.44 ug/L 01/27/23 06:03 01/27/23 14:15 1 Chromium 2.7 J 10 1.1 ug/L 01/27/23 06:03 01/27/23 14:15 1 Cobalt 14 10 1.4 ug/L 01/27/23 06:03 01/27/23 14:15 1 Copper <3.2 20 3.2 ug/L 01/27/23 06:03 01/27/23 14:15 1 Selenium <10 20 10 ug/L 01/27/23 06:03 01/27/23 14:15 1 Lead <6.6 10 6.6 ug/L 01/27/23 06:03 01/27/23 14:15 1 Nickel 8.2 J 40 3.3 ug/L 01/27/23 06:03 01/27/23 14:15 1 Silver <1.5 10 1.5 ug/L 01/27/23 06:03 01/27/23 14:15 1 Vanadium 3.5 J 10 1.0 ug/L 01/27/23 06:03 01/27/23 14:15 1 Zinc <8.7 20 8.7 ug/L 01/27/23 06:03 01/27/23 14:15 1 Iron 13000 100 20 ug/L 01/27/23 06:03 01/27/23 14:15 1 Manganese 4800 10 1.3 ug/L 01/27/23 06:03 01/27/23 14:15 1 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony 0.35 J B 5.0 0.34 ug/L 01/27/23 06:03 01/27/23 16:44 1 Thallium <0.26 1.0 0.26 ug/L 01/27/23 06:03 01/27/23 16:44 1 Method: SW846 7470A - Mercury (CVAA) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Mercury <0.080 0.20 0.080 ug/L 01/30/2313:47 01/31/2311:08 1 General Chemistry Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Total Dissolved Solids (SM 2540C) 1700 50 50 mg/L 01/30/23 13:36 1 Eurofins Raleigh Page 21 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-MW8 Lab Sample ID: 752-1612-5 Date Collected: 01/23/23 10:23 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,4-Dioxane 58 5.0 3.2 ug/L 02/02/2318:50 10 • Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 94 70 - 130 02102123 18:50 10 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,1,1,2-Tetrachloroethane <0.17 1.0 0.17 ug/L - 02/03/23 00:38 1 1,1,1-Trichloroethane <0.12 1.0 0.12 ug/L 02/03/23 00:38 1 1,1,2,2-Tetrachloroethane <0.28 1.0 0.28 ug/L 02/03/23 00:38 1 1,1,2-Trichloroethane <0.14 1.0 0.14 ug/L 02/03/23 00:38 1 1,1-Dichloroethane <0.13 1.0 0.13 ug/L 02/03/23 00:38 1 1,1-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 00:38 1 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/03/23 00:38 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/03/23 00:38 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/03/23 00:38 1 1,2-Dichloropropane <0.10 * 1.0 0.10 ug/L 02/03/23 00:38 1 2-Butanone (MEK) <10 *+ 20 10 ug/L 02/03/23 00:38 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/03/23 00:38 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/03/23 00:38 1 Acetone 21 20 10 ug/L 02/03/23 00:38 1 Acrylonitrile <3.5 10 3.5 ug/L 02/03/23 00:38 1 Benzene 1.6 H 1.0 0.15 ug/L 02/16/23 02:44 1 Bromoform <0.22 1.0 0.22 ug/L 02/03/23 00:38 1 Bromomethane <0.14 1.0 0.14 ug/L 02/03/23 00:38 1 Carbon disulfide <1.5 5.0 1.5 ug/L 02/03/23 00:38 1 Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/03/23 00:38 1 Chlorobenzene <0.17 `- 1.0 0.17 ug/L 02/03/23 00:38 1 Chloroethane <0.23 1.0 0.23 ug/L 02/03/23 00:38 1 Chloroform <0.18 *- 1.0 0.18 ug/L 02/03/23 00:38 1 Chloromethane <0.13 1.0 0.13 ug/L 02/03/23 00:38 1 cis-1,2-Dichloroethene <0.15 1.0 0.15 ug/L 02/03/23 00:38 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/03/23 00:38 1 Bromochloromethane <0.48 1.0 0.48 ug/L 02/03/23 00:38 1 Dibromochloromethane <0.17 1.0 0.17 ug/L 02/03/23 00:38 1 Bromodichloromethane <0.17 1.0 0.17 ug/L 02/03/23 00:38 1 Ethylbenzene <0.13 1.0 0.13 ug/L 02/03/23 00:38 1 Iodomethane <1.7 5.0 1.7 ug/L 02/03/23 00:38 1 Methylene Chloride <0.23 1.0 0.23 ug/L 02/03/23 00:38 1 Styrene <0.11 `- 1.0 0.11 ug/L 02/03/23 00:38 1 Tetrachloroethene <0.17 1.0 0.17 ug/L 02/03/23 00:38 1 Toluene 0.31 J 1.0 0.14 ug/L 02/03/23 00:38 1 trans- 1,2-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 00:38 1 trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/03/23 00:38 1 trans- 1,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/03/23 00:38 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/03/23 00:38 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/03/23 00:38 1 Vinyl chloride 0.96 J 1.0 0.32 ug/L 02/03/23 00:38 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/03/23 00:38 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/03/23 00:38 1 Eurofins Raleigh Page 22 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-MW8 Lab Sample ID: 752-1612-5 Date Collected: 01/23/23 10:23 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/03/23 00:38 1 1,4-Dichlorobenzene <0.19 *- 1.0 0.19 ug/L 02/03/23 00:38 1 �. Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/03/23 00:38 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/03/23 00:38 1 Tetrahydrofuran <0.53 1.0 0.53 ug/L 02/03/23 00:38 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 107 53 - 136 02103123 00:38 1 4-Bromofluorobenzene (Surr) 137 S1+ 53- 136 02/16/23 02:44 1 Dibromofluoromethane (Surr) 110 67- 129 02/03/23 00:38 1 Dibromofluoromethane (Surr) 100 67- 129 02116123 02:44 1 Toluene-d8 (Surr) 112 59 - 134 02103123 00:38 1 Toluene-d8 (Surr) 125 59 - 134 02116123 02:44 1 Method: EPA 300.0 - Anions, Ion Chromatography Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Chloride 170 0.50 0.20 mg/L 02/16/23 20:38 1 Sulfate 65 1.0 0.40 mg/L 02/16/23 20:38 1 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 01/27/23 06:03 01/27/23 14:17 1 Barium 230 10 4.4 ug/L 01/27/23 06:03 01/27/23 14:17 1 Beryllium <0.30 4.0 0.30 ug/L 01/27/23 06:03 01/27/23 14:17 1 Cadmium <0.44 5.0 0.44 ug/L 01/27/23 06:03 01/27/23 14:17 1 Chromium <1.1 10 1.1 ug/L 01/27/23 06:03 01/27/23 14:17 1 Cobalt 9.5 J 10 1.4 ug/L 01/27/23 06:03 01/27/23 14:17 1 Copper <3.2 20 3.2 ug/L 01/27/23 06:03 01/27/23 14:17 1 Selenium <100 200 100 ug/L 01/27/23 06:03 01/30/23 14:32 10 Lead <6.6 10 6.6 ug/L 01/27/23 06:03 01/27/23 14:17 1 Nickel 8.5 J 40 3.3 ug/L 01/27/23 06:03 01/27/23 14:17 1 Silver <15 100 15 ug/L 01/27/23 06:03 01/30/23 14:32 10 Vanadium 1.1 J 10 1.0 ug/L 01/27/23 06:03 01/27/23 14:17 1 Zinc <8.7 20 8.7 ug/L 01/27/23 06:03 01/27/23 14:17 1 Iron 4300 100 20 ug/L 01/27/23 06:03 01/27/23 14:17 1 Manganese 34000 100 13 ug/L 01/27/23 06:03 01/30/23 14:32 10 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony <0.34 5.0 0.34 ug/L 01/27/23 06:03 01/27/23 16:48 1 Thallium <0.26 1.0 0.26 ug/L 01/27/23 06:03 01/27/23 16:48 1 Method: SW846 7470A - Mercury (CVAA) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Mercury <0.080 0.20 0.080 ug/L 01/30/2313:47 01/31/2311:16 1 General Chemistry Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Total Dissolved Solids (SM 2540C) 1500 50 50 mg/L 01/30/23 13:36 1 Eurofins Raleigh Page 23 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-AMW1 Lab Sample ID: 752-1612-6 Date Collected: 01/23/23 15:00 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,4-Dioxane 23 5.0 3.2 ug/L 02/02/2319:17 10 • Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 102 70 - 130 02102123 19:17 10 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,1,1,2-Tetrachloroethane <0.17 1.0 0.17 ug/L - 02/03/23 01:09 1 1,1,1-Trichloroethane <0.12 1.0 0.12 ug/L 02/03/23 01:09 1 1,1,2,2-Tetrachloroethane <0.28 1.0 0.28 ug/L 02/03/23 01:09 1 1,1,2-Trichloroethane <0.14 1.0 0.14 ug/L 02/03/23 01:09 1 1,1-Dichloroethane <0.13 1.0 0.13 ug/L 02/03/23 01:09 1 1,1-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 01:09 1 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/03/23 01:09 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/03/23 01:09 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/03/23 01:09 1 1,2-Dichloropropane <0.10 * 1.0 0.10 ug/L 02/03/23 01:09 1 2-Butanone (MEK) <10 *+ 20 10 ug/L 02/03/23 01:09 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/03/23 01:09 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/03/23 01:09 1 Acetone 13 J 20 10 ug/L 02/03/23 01:09 1 Acrylonitrile <3.5 10 3.5 ug/L 02/03/23 01:09 1 Benzene 0.62 J *- 1.0 0.15 ug/L 02/03/23 01:09 1 Bromoform <0.22 1.0 0.22 ug/L 02/03/23 01:09 1 Bromomethane <0.14 1.0 0.14 ug/L 02/03/23 01:09 1 Carbon disulfide <1.5 5.0 1.5 ug/L 02/03/23 01:09 1 Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/03/23 01:09 1 Chlorobenzene <0.17 `- 1.0 0.17 ug/L 02/03/23 01:09 1 Chloroethane <0.23 1.0 0.23 ug/L 02/03/23 01:09 1 Chloroform <0.18 *- 1.0 0.18 ug/L 02/03/23 01:09 1 Chloromethane <0.13 1.0 0.13 ug/L 02/03/23 01:09 1 cis-1,2-Dichloroethene <0.15 1.0 0.15 ug/L 02/03/23 01:09 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/03/23 01:09 1 Bromochloromethane <0.48 1.0 0.48 ug/L 02/03/23 01:09 1 Dibromochloromethane <0.17 1.0 0.17 ug/L 02/03/23 01:09 1 Bromodichloromethane <0.17 1.0 0.17 ug/L 02/03/23 01:09 1 Ethylbenzene <0.13 1.0 0.13 ug/L 02/03/23 01:09 1 Iodomethane <1.7 5.0 1.7 ug/L 02/03/23 01:09 1 Methylene Chloride <0.23 1.0 0.23 ug/L 02/03/23 01:09 1 Styrene <0.11 `- 1.0 0.11 ug/L 02/03/23 01:09 1 Tetrachloroethene <0.17 1.0 0.17 ug/L 02/03/23 01:09 1 Toluene <0.14 1.0 0.14 ug/L 02/03/23 01:09 1 trans- 1,2-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 01:09 1 trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/03/23 01:09 1 trans- 1,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/03/23 01:09 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/03/23 01:09 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/03/23 01:09 1 Vinyl chloride <0.32 1.0 0.32 ug/L 02/03/23 01:09 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/03/23 01:09 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/03/23 01:09 1 Eurofins Raleigh Page 24 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-AMW1 Lab Sample ID: 752-1612-6 Date Collected: 01/23/23 15:00 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/03/23 01:09 1 1,4-Dichlorobenzene <0.19 *- 1.0 0.19 ug/L 02/03/23 01:09 1 �. Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/03/23 01:09 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/03/23 01:09 1 Tetrahydrofuran <0.53 1.0 0.53 ug/L 02/03/23 01:09 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 102 53 - 136 02103123 01:09 1 Dibromofluoromethane (Surr) 108 67- 129 02/03/23 01:09 1 Toluene-d8 (Surr) ill 59 - 134 02/03/23 01:09 1 Method: EPA 300.0 - Anions, Ion Chromatography Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Chloride 72 0.50 0.20 mg/L 02/16/23 21:18 1 Sulfate 46 1.0 0.40 mg/L 02/16/23 21:18 1 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 01/27/23 06:03 01/27/23 14:20 1 Barium 360 10 4.4 ug/L 01/27/23 06:03 01/27/23 14:20 1 Beryllium <0.30 4.0 0.30 ug/L 01/27/23 06:03 01/27/23 14:20 1 Cadmium <0.44 5.0 0.44 ug/L 01/27/23 06:03 01/27/23 14:20 1 Chromium <1.1 10 1.1 ug/L 01/27/23 06:03 01/27/23 14:20 1 Cobalt 9.5 J 10 1.4 ug/L 01/27/23 06:03 01/27/23 14:20 1 Copper <3.2 20 3.2 ug/L 01/27/23 06:03 01/27/23 14:20 1 Selenium <10 20 10 ug/L 01/27/23 06:03 01/27/23 14:20 1 Lead <6.6 10 6.6 ug/L 01/27/23 06:03 01/27/23 14:20 1 Nickel 4.4 J 40 3.3 ug/L 01/27/23 06:03 01/27/23 14:20 1 Silver <1.5 10 1.5 ug/L 01/27/23 06:03 01/27/23 14:20 1 Vanadium 1.9 J 10 1.0 ug/L 01/27/23 06:03 01/27/23 14:20 1 Zinc <8.7 20 8.7 ug/L 01/27/23 06:03 01/27/23 14:20 1 Iron 13000 100 20 ug/L 01/27/23 06:03 01/27/23 14:20 1 Manganese 5800 10 1.3 ug/L 01/27/23 06:03 01/27/23 14:20 1 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony <0.34 5.0 0.34 ug/L 01/27/23 06:03 01/27/23 16:52 1 Thallium <0.26 1.0 0.26 ug/L 01/27/23 06:03 01/27/23 16:52 1 Method: SW846 7470A - Mercury (CVAA) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Mercury <0.080 0.20 0.080 ug/L 01/30/2313:47 01/31/2311:18 1 General Chemistry Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Total Dissolved Solids (SM 2540C) 840 50 50 mg/L 01/30/23 13:36 1 Eurofins Raleigh Page 25 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-AMW2 Lab Sample ID: 752-1612-7 Date Collected: 01/23/23 13:20 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,4-Dioxane 54 5.0 3.2 ug/L 02/02/2319:44 10 • Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 99 70 - 130 02102123 19:44 10 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,1,1,2-Tetrachloroethane <0.17 1.0 0.17 ug/L - 02/03/23 01:40 1 1,1,1-Trichloroethane <0.12 1.0 0.12 ug/L 02/03/23 01:40 1 1,1,2,2-Tetrachloroethane <0.28 1.0 0.28 ug/L 02/03/23 01:40 1 1,1,2-Trichloroethane <0.14 1.0 0.14 ug/L 02/03/23 01:40 1 1,1-Dichloroethane <0.13 1.0 0.13 ug/L 02/03/23 01:40 1 1,1-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 01:40 1 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/03/23 01:40 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/03/23 01:40 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/03/23 01:40 1 1,2-Dichloropropane <0.10 * 1.0 0.10 ug/L 02/03/23 01:40 1 2-Butanone (MEK) <10 *+ 20 10 ug/L 02/03/23 01:40 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/03/23 01:40 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/03/23 01:40 1 Acetone 11 J 20 10 ug/L 02/03/23 01:40 1 Acrylonitrile <3.5 10 3.5 ug/L 02/03/23 01:40 1 Benzene 0.87 J *- 1.0 0.15 ug/L 02/03/23 01:40 1 Bromoform <0.22 1.0 0.22 ug/L 02/03/23 01:40 1 Bromomethane <0.14 1.0 0.14 ug/L 02/03/23 01:40 1 Carbon disulfide <1.5 5.0 1.5 ug/L 02/03/23 01:40 1 Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/03/23 01:40 1 Chlorobenzene <0.17 `- 1.0 0.17 ug/L 02/03/23 01:40 1 Chloroethane <0.23 1.0 0.23 ug/L 02/03/23 01:40 1 Chloroform <0.18 *- 1.0 0.18 ug/L 02/03/23 01:40 1 Chloromethane <0.13 1.0 0.13 ug/L 02/03/23 01:40 1 cis-1,2-Dichloroethene <0.15 1.0 0.15 ug/L 02/03/23 01:40 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/03/23 01:40 1 Bromochloromethane <0.48 1.0 0.48 ug/L 02/03/23 01:40 1 Dibromochloromethane <0.17 1.0 0.17 ug/L 02/03/23 01:40 1 Bromodichloromethane <0.17 1.0 0.17 ug/L 02/03/23 01:40 1 Ethylbenzene <0.13 1.0 0.13 ug/L 02/03/23 01:40 1 Iodomethane <1.7 5.0 1.7 ug/L 02/03/23 01:40 1 Methylene Chloride <0.23 1.0 0.23 ug/L 02/03/23 01:40 1 Styrene <0.11 `- 1.0 0.11 ug/L 02/03/23 01:40 1 Tetrachloroethene <0.17 1.0 0.17 ug/L 02/03/23 01:40 1 Toluene <0.14 1.0 0.14 ug/L 02/03/23 01:40 1 trans- 1,2-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 01:40 1 trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/03/23 01:40 1 trans- 1,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/03/23 01:40 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/03/23 01:40 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/03/23 01:40 1 Vinyl chloride <0.32 1.0 0.32 ug/L 02/03/23 01:40 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/03/23 01:40 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/03/23 01:40 1 Eurofins Raleigh Page 26 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-AMW2 Lab Sample ID: 752-1612-7 Date Collected: 01/23/23 13:20 Matrix: Water Date Received: 01/24/23 12:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/03/23 01:40 1 1,4-Dichlorobenzene <0.19 *- 1.0 0.19 ug/L 02/03/23 01:40 1 �. Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/03/23 01:40 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/03/23 01:40 1 Tetrahydrofuran 54 1.0 0.53 ug/L 02/03/23 01:40 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 108 53 - 136 02103123 01:40 1 Dibromofluoromethane (Surr) 108 67- 129 02/03/23 01:40 1 Toluene-d8 (Surr) 112 59 - 134 02/03/23 01:40 1 Method: EPA 300.0 - Anions, Ion Chromatography Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Chloride 73 0.50 0.20 mg/L 02/16/23 21:57 1 Sulfate 32 1.0 0.40 mg/L 02/16/23 21:57 1 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 01/27/23 06:03 01/27/23 14:28 1 Barium 210 10 4.4 ug/L 01/27/23 06:03 01/27/23 14:28 1 Beryllium <0.30 4.0 0.30 ug/L 01/27/23 06:03 01/27/23 14:28 1 Cadmium <0.44 5.0 0.44 ug/L 01/27/23 06:03 01/27/23 14:28 1 Chromium 1.3 J 10 1.1 ug/L 01/27/23 06:03 01/27/23 14:28 1 Cobalt 9.3 J 10 1.4 ug/L 01/27/23 06:03 01/27/23 14:28 1 Copper <3.2 20 3.2 ug/L 01/27/23 06:03 01/27/23 14:28 1 Selenium <10 20 10 ug/L 01/27/23 06:03 01/27/23 14:28 1 Lead <6.6 10 6.6 ug/L 01/27/23 06:03 01/27/23 14:28 1 Nickel 5.2 J 40 3.3 ug/L 01/27/23 06:03 01/27/23 14:28 1 Silver <1.5 10 1.5 ug/L 01/27/23 06:03 01/27/23 14:28 1 Vanadium 1.3 J 10 1.0 ug/L 01/27/23 06:03 01/27/23 14:28 1 Zinc <8.7 20 8.7 ug/L 01/27/23 06:03 01/27/23 14:28 1 Iron 2600 100 20 ug/L 01/27/23 06:03 01/27/23 14:28 1 Manganese 2700 10 1.3 ug/L 01/27/23 06:03 01/27/23 14:28 1 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony <0.34 5.0 0.34 ug/L 01/27/23 06:03 01/27/23 16:56 1 Thallium <0.26 1.0 0.26 ug/L 01/27/23 06:03 01/27/23 16:56 1 Method: SW846 7470A - Mercury (CVAA) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Mercury <0.080 0.20 0.080 ug/L 01/30/2313:47 01/31/2311:21 1 General Chemistry Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Total Dissolved Solids (SM 2540C) 810 50 50 mg/L 01/30/23 13:36 1 Eurofins Raleigh Page 27 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-P3 Lab Sample ID: 752-1993-1 Date Collected: 01/24/23 09:37 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 02/03/2312:17 02/06/2312:21 1 Barium 61 10 4.4 ug/L 02/03/2312:17 02/06/2312:21 1 Beryllium <0.30 4.0 0.30 ug/L 02/03/2312:17 02/06/2312:21 1 Cadmium 2.5 J 5.0 0.44 ug/L 02/03/2312:17 02/06/2312:21 1 Chromium 4.4 J 10 1.1 ug/L 02/03/2312:17 02/06/2312:21 1 Cobalt 2.3 J 10 1.4 ug/L 02/03/2312:17 02/06/2312:21 1 Copper 8.9 J 20 3.2 ug/L 02/03/2312:17 02/06/2312:21 1 Selenium <10 20 10 ug/L 02/03/2312:17 02/06/2312:21 1 Lead <6.6 10 6.6 ug/L 02/03/2312:17 02/06/2312:21 1 Nickel 4.6 J 40 3.3 ug/L 02/03/2312:17 02/06/2312:21 1 Silver <1.5 10 1.5 ug/L 02/03/2312:17 02/06/2312:21 1 Vanadium 11 10 1.0 ug/L 02/03/2312:17 02/06/2312:21 1 Zinc <8.7 20 8.7 ug/L 02/03/2312:17 02/06/2312:21 1 Iron 3600 100 20 ug/L 02/03/2312:17 02/06/2312:21 1 Manganese 390 10 1.3 ug/L 02/03/2312:17 02/06/2312:21 1 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed DII Fac Antimony 0.87 J F2 F1 B 5.0 0.34 ug/L 02/03/23 12:17 02/06/23 11:35 1 Thallium <0.26 F2 1.0 0.26 ug/L 02/03/2312:17 02/06/2311:35 1 Method: SW846 7470A - Mercury (CVAA) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Mercury <0.080 0.20 0.080 ug/L 02/03/2313:06 02/06/2312:18 1 Client Sample ID: 4116-SW1 Lab Sample ID: 752-1993-2 Date Collected: 01/24/23 13:31 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,4-Dioxane <0.32 0.50 0.32 ug/L 02/03/2314:15 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 104 70 - 130 02/03/23 14:15 1 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,1,1,2-Tetrachloroethane <0.17 1.0 0.17 ug/L 02/03/23 02:11 1 1,1,1-Trichloroethane <0.12 1.0 0.12 ug/L 02/03/23 02:11 1 1,1,2,2-Tetrachloroethane <0.28 1.0 0.28 ug/L 02/03/23 02:11 1 1,1,2-Trichloroethane <0.14 1.0 0.14 ug/L 02/03/23 02:11 1 1,1-Dichloroethane <0.13 1.0 0.13 ug/L 02/03/23 02:11 1 1,1-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 02:11 1 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/03/23 02:11 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/03/23 02:11 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/03/23 02:11 1 1,2-Dichloropropane <0.10 * 1.0 0.10 ug/L 02/03/23 02:11 1 2-Butanone (MEK) <10 *+ 20 10 ug/L 02/03/23 02:11 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/03/23 02:11 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/03/23 02:11 1 Eurofins Raleigh Page 28 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-SW1 Lab Sample ID: 752-1993-2 Date Collected: 01/24/23 13:31 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Acetone <10 20 10 ug/L 02/03/23 02:11 1 Acrylonitrile <3.5 10 3.5 ug/L 02/03/23 02:11 1 Benzene <0.15 *- 1.0 0.15 ug/L 02/03/23 02:11 1 Bromoform <0.22 1.0 0.22 ug/L 02/03/23 02:11 1 Bromomethane <0.14 1.0 0.14 ug/L 02/03/23 02:11 1 Carbon disulfide <1.5 5.0 1.5 ug/L 02/03/23 02:11 1 Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/03/23 02:11 1 Chlorobenzene <0.17 *- 1.0 0.17 ug/L 02/03/23 02:11 1 Chloroethane <0.23 1.0 0.23 ug/L 02/03/23 02:11 1 Chloroform <0.18 * 1.0 0.18 ug/L 02/03/23 02:11 1 Chloromethane <0.13 1.0 0.13 ug/L 02/03/23 02:11 1 cis-1,2-Dichloroethene <0.15 1.0 0.15 ug/L 02/03/23 02:11 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/03/23 02:11 1 Bromochloromethane <0.48 1.0 0.48 ug/L 02/03/23 02:11 1 Dibromochloromethane <0.17 1.0 0.17 ug/L 02/03/23 02:11 1 Bromodichloromethane <0.17 1.0 0.17 ug/L 02/03/23 02:11 1 Ethylbenzene <0.13 1.0 0.13 ug/L 02/03/23 02:11 1 lodomethane <1.7 5.0 1.7 ug/L 02/03/23 02:11 1 Methylene Chloride <0.23 1.0 0.23 ug/L 02/03/23 02:11 1 Styrene <0.11 *- 1.0 0.11 ug/L 02/03/23 02:11 1 Tetrachloroethene <0.17 1.0 0.17 ug/L 02/03/23 02:11 1 Toluene <0.14 1.0 0.14 ug/L 02/03/23 02:11 1 trans- 1,2-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 02:11 1 trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/03/23 02:11 1 trans- 1,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/03/23 02:11 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/03/23 02:11 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/03/23 02:11 1 Vinyl chloride <0.32 1.0 0.32 ug/L 02/03/23 02:11 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/03/23 02:11 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/03/23 02:11 1 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/03/23 02:11 1 1,4-Dichlorobenzene <0.19 *- 1.0 0.19 ug/L 02/03/23 02:11 1 Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/03/23 02:11 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/03/23 02:11 1 Tetrahydrofuran <0.53 1.0 0.53 ug/L 02/03/23 02:11 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 105 53 - 136 02/03/23 02 11 1 Dibromofluoromethane (Surr) 113 67- 129 02/03/23 02:11 1 Toluene-d8 (Surr) 110 59 - 134 02/03/23 02:11 1 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 02/03/2312:17 02/06/2312:36 1 Barium 40 10 4.4 ug/L 02/03/2312:17 02/06/2312:36 1 Beryllium <0.30 4.0 0.30 ug/L 02/03/2312:17 02/06/2312:36 1 Cadmium <0.44 5.0 0.44 ug/L 02/03/2312:17 02/06/2312:36 1 Chromium 1.1 J 10 1.1 ug/L 02/03/2312:17 02/06/2312:36 1 Cobalt <1.4 10 1.4 ug/L 02/03/2312:17 02/06/2312:36 1 Copper 5.0 J 20 3.2 ug/L 02/03/2312:17 02/06/2312:36 1 0 Eurofins Raleigh Page 29 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-SW1 Lab Sample ID: 752-1993-2 Date Collected: 01/24/23 13:31 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 6010D - Metals (ICP) - Total Recoverable (Continued) Analyte Result Qualifier RL MDL Unit Selenium <10 20 10 ug/L Lead <6.6 10 6.6 ug/L Nickel <3.3 40 3.3 ug/L Silver <1.5 10 1.5 ug/L Vanadium 3.7 J 10 1.0 ug/L 19 J 20 8.7 ug/L -Zinc Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit Antimony 0.84 J B 5.0 0.34 ug/L Thallium <0.26 1.0 0.26 ug/L D Prepared Analyzed Dil Fac 02/03/2312:17 02/06/2312:36 1 02/03/2312:17 02/06/2312:36 1 02/03/2312:17 02/06/2312:36 1 02/03/2312:17 02/06/2312:36 1 02/03/2312:17 02/06/2312:36 1 02/03/2312:17 02/06/2312:36 1 D Prepared Analyzed Dil Fac C 02/03/2312:17 02/06/2311:48 1 02/03/2312:17 02/06/2311:48 1 Client Sample ID: 4116-SW2 Lab Sample ID: 752-1993-3 Date Collected: 01/24/23 13:09 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit 1,4-Dioxane 1.4 0.50 0.32 ug/L D Prepared Analyzed Dil Fac C 02/03/23 14:42 1 Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surd 120 70 - 130 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL MDL Unit Prepared Analyzed 02/03/23 14:42 D Prepared Analyzed DU Fac 1 Dil Fac 1,1,1,2-Tetrachloroethane <0.17 1.0 0.17 ug/L 02/03/23 02:43 1 1,1,1-Trichloroethane <0.12 1.0 0.12 ug/L 02/03/23 02:43 1 1,1,2,2-Tetrachloroethane <0.28 1.0 0.28 ug/L 02/03/23 02:43 1 1,1,2-Trichloroethane <0.14 1.0 0.14 ug/L 02/03/23 02:43 1 1,1-Dichloroethane <0.13 1.0 0.13 ug/L 02/03/23 02:43 1 1,1-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 02:43 1 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/03/23 02:43 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/03/23 02:43 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/03/23 02:43 1 1,2-Dichloropropane <0.10 *- 1.0 0.10 ug/L 02/03/23 02:43 1 2-Butanone (MEK) <10 *+ 20 10 ug/L 02/03/23 02:43 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/03/23 02:43 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/03/23 02:43 1 Acetone <10 20 10 ug/L 02/03/23 02:43 1 Acrylonitrile <3.5 10 3.5 ug/L 02/03/23 02:43 1 Benzene <0.15 *- 1.0 0.15 ug/L 02/03/23 02:43 1 Bromoform <0.22 1.0 0.22 ug/L 02/03/23 02:43 1 Bromomethane <0.14 1.0 0.14 ug/L 02/03/23 02:43 1 Carbon disulfide <1.5 5.0 1.5 ug/L 02/03/23 02:43 1 Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/03/23 02:43 1 Chlorobenzene <0.17 *- 1.0 0.17 ug/L 02/03/23 02:43 1 Chloroethane <0.23 1.0 0.23 ug/L 02/03/23 02:43 1 Chloroform <0.18 * 1.0 0.18 ug/L 02/03/23 02:43 1 Chloromethane <0.13 1.0 0.13 ug/L 02/03/23 02:43 1 cis-1,2-Dichloroethene <0.15 1.0 0.15 ug/L 02/03/23 02:43 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/03/23 02:43 1 Eurofins Raleigh Page 30 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-SW2 Lab Sample ID: 752-1993-3 Date Collected: 01/24/23 13:09 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit Bromochloromethane <0.48 1.0 0.48 ug/L Dibromochloromethane <0.17 1.0 0.17 ug/L Bromodichloromethane <0.17 1.0 0.17 ug/L Ethylbenzene <0.13 1.0 0.13 ug/L lodomethane <1.7 5.0 1.7 ug/L Methylene Chloride <0.23 1.0 0.23 ug/L Styrene <0.11 *- 1.0 0.11 ug/L Tetrachloroethene <0.17 1.0 0.17 ug/L Toluene <0.14 1.0 0.14 ug/L trans- 1,2-Dichloroethene <0.21 1.0 0.21 ug/L trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L trans- 1,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L Trichloroethene <0.15 1.0 0.15 ug/L Vinyl acetate <0.95 5.0 0.95 ug/L Vinyl chloride <0.32 1.0 0.32 ug/L Xylenes, Total <0.45 3.0 0.45 ug/L Dibromomethane <0.27 1.0 0.27 ug/L 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 1,4-Dichlorobenzene <0.19 *- 1.0 0.19 ug/L Trichlorofluoromethane <0.24 1.0 0.24 ug/L 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L Tetrahydrofuran <0.53 1.0 0.53 ug/L Surrogate 4-Bromofluorobenzene (Surr) Dibromofluoromethane (Surr) Toluene-d8 (Surr) D Prepared Analyzed Dil Fac 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 02/03/23 02:43 1 %Recovery Qualifier Limits Prepared Analyzed Dil Fac 104 53 - 136 02/03/23 02:43 1 111 67 - 129 02103123 02:43 1 111 59 - 134 02103123 02:43 1 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 02/03/2312:17 02/06/2312:39 1 Barium 43 10 4.4 ug/L 02/03/2312:17 02/06/2312:39 1 Beryllium <0.30 4.0 0.30 ug/L 02/03/2312:17 02/06/2312:39 1 Cadmium <0.44 5.0 0.44 ug/L 02/03/2312:17 02/06/2312:39 1 Chromium <1.1 10 1.1 ug/L 02/03/2312:17 02/06/2312:39 1 Cobalt <1.4 10 1.4 ug/L 02/03/2312:17 02/06/2312:39 1 Copper 3.2 J 20 3.2 ug/L 02/03/2312:17 02/06/2312:39 1 Selenium <10 20 10 ug/L 02/03/2312:17 02/06/2312:39 1 Lead <6.6 10 6.6 ug/L 02/03/2312:17 02/06/2312:39 1 Nickel <3.3 40 3.3 ug/L 02/03/2312:17 02/06/2312:39 1 Silver <1.5 10 1.5 ug/L 02/03/2312:17 02/06/2312:39 1 Vanadium <1.0 10 1.0 ug/L 02/03/2312:17 02/06/2312:39 1 Zinc <8.7 20 8.7 ug/L 02/03/2312:17 02/06/2312:39 1 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony 0.61 J B 5.0 0.34 ug/L 02/03/23 12:17 02/06/23 11:52 1 Thallium <0.26 1.0 0.26 ug/L 02/03/2312:17 02/06/2311:52 1 Eurofins Raleigh Page 31 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-SW3 Lab Sample ID: 752-1993-4 Date Collected: 01/24/23 12:53 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,4-Dioxane 1.7 0.50 0.32 ug/L 02/03/2315:09 1 • Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 118 70 - 130 02103123 15:09 1 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,1,1,2-Tetrachloroethane <0.17 1.0 0.17 ug/L - 02/03/23 03:14 1 1,1,1-Trichloroethane <0.12 1.0 0.12 ug/L 02/03/23 03:14 1 1,1,2,2-Tetrachloroethane <0.28 1.0 0.28 ug/L 02/03/23 03:14 1 1,1,2-Trichloroethane <0.14 1.0 0.14 ug/L 02/03/23 03:14 1 1,1-Dichloroethane <0.13 1.0 0.13 ug/L 02/03/23 03:14 1 1,1-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 03:14 1 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/03/23 03:14 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/03/23 03:14 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/03/23 03:14 1 1,2-Dichloropropane <0.10 * 1.0 0.10 ug/L 02/03/23 03:14 1 2-Butanone (MEK) 10 J B *+ 20 10 ug/L 02/03/23 03:14 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/03/23 03:14 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/03/23 03:14 1 Acetone 12 J 20 10 ug/L 02/03/23 03:14 1 Acrylonitrile <3.5 10 3.5 ug/L 02/03/23 03:14 1 Benzene <0.15 *- 1.0 0.15 ug/L 02/03/23 03:14 1 Bromoform <0.22 1.0 0.22 ug/L 02/03/23 03:14 1 Bromomethane <0.14 1.0 0.14 ug/L 02/03/23 03:14 1 Carbon disulfide <1.5 5.0 1.5 ug/L 02/03/23 03:14 1 Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/03/23 03:14 1 Chlorobenzene <0.17 *- 1.0 0.17 ug/L 02/03/23 03:14 1 Chloroethane <0.23 1.0 0.23 ug/L 02/03/23 03:14 1 Chloroform <0.18 *- 1.0 0.18 ug/L 02/03/23 03:14 1 Chloromethane <0.13 1.0 0.13 ug/L 02/03/23 03:14 1 cis-1,2-Dichloroethene <0.15 1.0 0.15 ug/L 02/03/23 03:14 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/03/23 03:14 1 Bromochloromethane <0.48 1.0 0.48 ug/L 02/03/23 03:14 1 Dibromochloromethane <0.17 1.0 0.17 ug/L 02/03/23 03:14 1 Bromodichloromethane <0.17 1.0 0.17 ug/L 02/03/23 03:14 1 Ethylbenzene <0.13 1.0 0.13 ug/L 02/03/23 03:14 1 Iodomethane <1.7 5.0 1.7 ug/L 02/03/23 03:14 1 Methylene Chloride 0.25 J 1.0 0.23 ug/L 02/03/23 03:14 1 Styrene <0.11 *- 1.0 0.11 ug/L 02/03/23 03:14 1 Tetrachloroethene <0.17 1.0 0.17 ug/L 02/03/23 03:14 1 Toluene <0.14 1.0 0.14 ug/L 02/03/23 03:14 1 trans- 1,2-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 03:14 1 trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/03/23 03:14 1 trans- 1,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/03/23 03:14 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/03/23 03:14 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/03/23 03:14 1 Vinyl chloride <0.32 1.0 0.32 ug/L 02/03/23 03:14 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/03/23 03:14 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/03/23 03:14 1 Eurofins Raleigh Page 32 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-SW3 Lab Sample ID: 752-1993-4 Date Collected: 01/24/23 12:53 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/03/23 03:14 1 1,4-Dichlorobenzene <0.19 *- 1.0 0.19 ug/L 02/03/23 03:14 1 �. Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/03/23 03:14 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/03/23 03:14 1 Tetrahydrofuran <0.53 1.0 0.53 ug/L 02/03/23 03:14 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 104 53 - 136 02103123 03:14 1 Dibromofluoromethane (Surr) 110 67- 129 02/03/23 03:14 1 Toluene-d8 (Surr) 110 59 - 134 02/03/23 03:14 1 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 02/03/2312:17 02/06/2312:42 1 Barium 56 10 4.4 ug/L 02/03/2312:17 02/06/2312:42 1 Beryllium <0.30 4.0 0.30 ug/L 02/03/2312:17 02/06/2312:42 1 Cadmium <0.44 5.0 0.44 ug/L 02/03/2312:17 02/06/2312:42 1 Chromium 2.7 J 10 1.1 ug/L 02/03/2312:17 02/06/2312:42 1 Cobalt <1.4 10 1.4 ug/L 02/03/2312:17 02/06/2312:42 1 Copper 5.5 J 20 3.2 ug/L 02/03/2312:17 02/06/2312:42 1 Selenium <10 20 10 ug/L 02/03/2312:17 02/06/2312:42 1 Lead <6.6 10 6.6 ug/L 02/03/2312:17 02/06/2312:42 1 Nickel <3.3 40 3.3 ug/L 02/03/2312:17 02/06/2312:42 1 Silver <1.5 10 1.5 ug/L 02/03/2312:17 02/06/2312:42 1 Vanadium 6.1 J 10 1.0 ug/L 02/03/2312:17 02/06/2312:42 1 Zinc <8.7 20 8.7 ug/L 02/03/2312:17 02/06/2312:42 1 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony 0.46 J B 5.0 0.34 ug/L 02/03/23 12:17 02/06/23 11:56 1 Thallium <0.26 1.0 0.26 ug/L 02/03/2312:17 02/06/2311:56 1 Client Sample ID: 4116-SW4 Date Collected: 01/25/23 09:10 Date Received: 01/25/23 14:45 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit 1,4-Dioxane 2.0 0.50 0.32 ug/L Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 99 70 - 130 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL 1,1,1,2-Tetrachloroethane <0.17 1.0 1,1,1-Trichloroethane <0.12 1.0 1,1,2,2-Tetrachloroethane <0.28 1.0 1,1,2-Trichloroethane <0.14 1.0 1,1-Dichloroethane <0.13 1.0 1,1-Dichloroethene <0.21 1.0 Lab Sample ID: 752-1993-5 Matrix: Water D Prepared Analyzed Dil Fac 02/03/23 15:36 1 Prepared Analyzed Dil Fac 02103123 15:36 1 MDL Unit D Prepared Analyzed Dil Fac 0.17 ug/L 02/03/23 03:45 1 0.12 ug/L 02/03/23 03:45 1 0.28 ug/L 02/03/23 03:45 1 0.14 ug/L 02/03/23 03:45 1 0.13 ug/L 02/03/23 03:45 1 0.21 ug/L 02/03/23 03:45 1 Eurofins Raleigh Page 33 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-SW4 Lab Sample ID: 752-1993-5 Date Collected: 01/25/23 09:10 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/03/23 03:45 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/03/23 03:45 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/03/23 03:45 1 1,2-Dichloropropane <0.10 *- 1.0 0.10 ug/L 02/03/23 03:45 1 2-Butanone (MEK) <10 *+ 20 10 ug/L 02/03/23 03:45 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/03/23 03:45 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/03/23 03:45 1 Acetone <10 20 10 ug/L 02/03/23 03:45 1 Acrylonitrile <3.5 10 3.5 ug/L 02/03/23 03:45 1 Benzene <0.15 *- 1.0 0.15 ug/L 02/03/23 03:45 1 Bromoform <0.22 1.0 0.22 ug/L 02/03/23 03:45 1 Bromomethane <0.14 1.0 0.14 ug/L 02/03/23 03:45 1 Carbon disulfide <1.5 5.0 1.5 ug/L 02/03/23 03:45 1 Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/03/23 03:45 1 Chlorobenzene <0.17 *- 1.0 0.17 ug/L 02/03/23 03:45 1 Chloroethane <0.23 1.0 0.23 ug/L 02/03/23 03:45 1 Chloroform <0.18 *- 1.0 0.18 ug/L 02/03/23 03:45 1 Chloromethane <0.13 1.0 0.13 ug/L 02/03/23 03:45 1 cis-1,2-Dichloroethene <0.15 1.0 0.15 ug/L 02/03/23 03:45 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/03/23 03:45 1 Bromochloromethane <0.48 1.0 0.48 ug/L 02/03/23 03:45 1 Dibromochloromethane <0.17 1.0 0.17 ug/L 02/03/23 03:45 1 Bromodichloromethane <0.17 1.0 0.17 ug/L 02/03/23 03:45 1 Ethylbenzene <0.13 1.0 0.13 ug/L 02/03/23 03:45 1 Iodomethane <1.7 5.0 1.7 ug/L 02/03/23 03:45 1 Methylene Chloride <0.23 1.0 0.23 ug/L 02/03/23 03:45 1 Styrene <0.11 *- 1.0 0.11 ug/L 02/03/23 03:45 1 Tetrachloroethene <0.17 1.0 0.17 ug/L 02/03/23 03:45 1 Toluene <0.14 1.0 0.14 ug/L 02/03/23 03:45 1 trans- 1,2-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 03:45 1 trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/03/23 03:45 1 trans- l,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/03/23 03:45 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/03/23 03:45 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/03/23 03:45 1 Vinyl chloride <0.32 1.0 0.32 ug/L 02/03/23 03:45 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/03/23 03:45 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/03/23 03:45 1 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/03/23 03:45 1 1,4-Dichlorobenzene <0.19 * 1.0 0.19 ug/L 02/03/23 03:45 1 Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/03/23 03:45 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/03/23 03:45 1 Tetrahydrofuran <0.53 1.0 0.53 ug/L 02/03/23 03:45 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 104 53 - 136 02103123 03:45 1 Dibromofluoromethane (Surr) 112 67- 129 02103123 03:45 1 Toluene-d8 (Surr) 110 59 - 134 02103123 03:45 1 0 Eurofins Raleigh Page 34 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-SW4 Lab Sample ID: 752-1993-5 Date Collected: 01/25/23 09:10 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 02/03/2312:17 02/06/2312:45 1 Barium 50 10 4.4 ug/L 02/03/2312:17 02/06/2312:45 1 Beryllium <0.30 4.0 0.30 ug/L 02/03/2312:17 02/06/2312:45 1 Cadmium <0.44 5.0 0.44 ug/L 02/03/2312:17 02/06/2312:45 1 Chromium 2.3 J 10 1.1 ug/L 02/03/2312:17 02/06/2312:45 1 Cobalt <1.4 10 1.4 ug/L 02/03/2312:17 02/06/2312:45 1 Copper 4.7 J 20 3.2 ug/L 02/03/2312:17 02/06/2312:45 1 Selenium <10 20 10 ug/L 02/03/2312:17 02/06/2312:45 1 Lead <6.6 10 6.6 ug/L 02/03/2312:17 02/06/2312:45 1 Nickel <3.3 40 3.3 ug/L 02/03/2312:17 02/06/2312:45 1 Silver <1.5 10 1.5 ug/L 02/03/2312:17 02/06/2312:45 1 Vanadium 5.3 J 10 1.0 ug/L 02/03/2312:17 02/06/2312:45 1 Zinc <8.7 20 8.7 ug/L 02/03/2312:17 02/06/2312:45 1 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony 0.40 J B 5.0 0.34 ug/L 02/03/23 12:17 02/06/23 12:00 1 Thallium <0.26 1.0 0.26 ug/L 02/03/2312:17 02/06/2312:00 1 Client Sample ID: 4116-SW5 Lab Sample ID: 752-1993-6 Date Collected: 01/24/23 12:16 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,4-Dioxane 14 5.0 3.2 ug/L 02/03/2317:24 10 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 102 70 - 130 02/03/23 17:24 10 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,1,1,2-Tetrachloroethane <0.17 1.0 0.17 ug/L 02/03/23 04:17 1 1,1,1-Trichloroethane <0.12 1.0 0.12 ug/L 02/03/23 04:17 1 1,1,2,2-Tetrachloroethane <0.28 1.0 0.28 ug/L 02/03/23 04:17 1 1,1,2-Trichloroethane <0.14 1.0 0.14 ug/L 02/03/23 04:17 1 1,1-Dichloroethane <0.13 1.0 0.13 ug/L 02/03/23 04:17 1 1,1-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 04:17 1 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/03/23 04:17 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/03/23 04:17 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/03/23 04:17 1 1,2-Dichloropropane <0.10 *- 1.0 0.10 ug/L 02/03/23 04:17 1 2-Butanone (MEK) <10 *+ 20 10 ug/L 02/03/23 04:17 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/03/23 04:17 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/03/23 04:17 1 Acetone 12 J 20 10 ug/L 02/03/23 04:17 1 Acrylonitrile <3.5 10 3.5 ug/L 02/03/23 04:17 1 Benzene <0.15 *- 1.0 0.15 ug/L 02/03/23 04:17 1 Bromoform <0.22 1.0 0.22 ug/L 02/03/23 04:17 1 Bromomethane <0.14 1.0 0.14 ug/L 02/03/23 04:17 1 Carbon disulfide <1.5 5.0 1.5 ug/L 02/03/23 04:17 1 Eurofins Raleigh Page 35 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-SW5 Lab Sample ID: 752-1993-6 Date Collected: 01/24/23 12:16 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/03/23 04:17 1 Chlorobenzene <0.17 *- 1.0 0.17 ug/L 02/03/23 04:17 1 Chloroethane <0.23 1.0 0.23 ug/L 02/03/23 04:17 1 Chloroform <0.18 "- 1.0 0.18 ug/L 02/03/23 04:17 1 Chloromethane <0.13 1.0 0.13 ug/L 02/03/23 04:17 1 cis-1,2-Dichloroethene <0.15 1.0 0.15 ug/L 02/03/23 04:17 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/03/23 04:17 1 Bromochloromethane <0.48 1.0 0.48 ug/L 02/03/23 04:17 1 Dibromochloromethane <0.17 1.0 0.17 ug/L 02/03/23 04:17 1 Bromodichloromethane <0.17 1.0 0.17 ug/L 02/03/23 04:17 1 Ethylbenzene <0.13 1.0 0.13 ug/L 02/03/23 04:17 1 lodomethane <1.7 5.0 1.7 ug/L 02/03/23 04:17 1 Methylene Chloride <0.23 1.0 0.23 ug/L 02/03/23 04:17 1 Styrene <0.11- 1.0 0.11 ug/L 02/03/23 04:17 1 Tetrachloroethene <0.17 1.0 0.17 ug/L 02/03/23 04:17 1 Toluene <0.14 1.0 0.14 ug/L 02/03/23 04:17 1 trans- 1,2-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 04:17 1 trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/03/23 04:17 1 trans- l,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/03/23 04:17 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/03/23 04:17 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/03/23 04:17 1 Vinyl chloride <0.32 1.0 0.32 ug/L 02/03/23 04:17 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/03/23 04:17 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/03/23 04:17 1 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/03/23 04:17 1 1,4-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/03/23 04:17 1 Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/03/23 04:17 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/03/23 04:17 1 Tetrahydrofuran <0.53 1.0 0.53 ug/L 02/03/23 04:17 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 104 53 - 136 02103123 04:17 1 Dibromofluoromethane (Surr) 112 67- 129 02103123 04:17 1 Toluene-d8 (Surr) 110 59 - 134 02103123 04:17 1 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 02/03/2312:17 02/06/2312:48 1 Barium 160 10 4.4 ug/L 02/03/2312:17 02/06/2312:48 1 Beryllium <0.30 4.0 0.30 ug/L 02/03/2312:17 02/06/2312:48 1 Cadmium <0.44 5.0 0.44 ug/L 02/03/2312:17 02/06/2312:48 1 Chromium <1.1 10 1.1 ug/L 02/03/2312:17 02/06/2312:48 1 Cobalt 15 10 1.4 ug/L 02/03/2312:17 02/06/2312:48 1 Copper <3.2 20 3.2 ug/L 02/03/2312:17 02/06/2312:48 1 Selenium <10 20 10 ug/L 02/03/2312:17 02/06/2312:48 1 Lead <6.6 10 6.6 ug/L 02/03/2312:17 02/06/2312:48 1 Nickel 4.5 J 40 3.3 ug/L 02/03/2312:17 02/06/2312:48 1 Silver <1.5 10 1.5 ug/L 02/03/2312:17 02/06/2312:48 1 Vanadium 2.4 J 10 1.0 ug/L 02/03/2312:17 02/06/2312:48 1 Zinc <8.7 20 8.7 ug/L 02/03/2312:17 02/06/2312:48 1 0 Eurofins Raleigh Page 36 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-SW5 Lab Sample ID: 752-1993-6 Date Collected: 01/24/23 12:16 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit Antimony 0.34 J B 5.0 0.34 ug/L Thallium <0.26 1.0 0.26 ug/L Client Sample ID: 4116-SW6 Date Collected: 01/24/23 12:07 Date Received: 01/25/23 14:45 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit 1,4-Dioxane 2.1 0.50 0.32 ug/L Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 107 70 - 130 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL 1,1,1,2-Tetrachloroethane <0.17 1.0 1,1,1-Trichloroethane <0.12 1.0 1,1,2,2-Tetrachloroethane <0.28 1.0 1,1,2-Trichloroethane <0.14 1.0 1,1-Dichloroethane <0.13 1.0 1,1-Dichloroethene <0.21 1.0 1,2-Dibromo-3-Chloropropane <0.48 1.0 1,2-Dichlorobenzene <0.19 1.0 1,2-Dichloroethane <0.21 1.0 1,2-Dichloropropane <0.10 1.0 2-Butanone (MEK) <10 ,+ 20 2-Hexanone <0.88 5.0 4-Methyl-2-pentanone (MIBK) <1.1 5.0 Acetone 11 J 20 Acrylonitrile <3.5 10 Benzene <0.15 '- 1.0 Bromoform <0.22 1.0 Bromomethane <0.14 1.0 Carbon disulfide <1.5 5.0 Carbon tetrachloride <0.17 1.0 Chlorobenzene <0.17 `- 1.0 Chloroethane <0.23 1.0 Chloroform <0.18 "- 1.0 Chloromethane <0.13 1.0 cis-1,2-Dichloroethene <0.15 1.0 cis-1,3-Dichloropropene <0.20 1.0 Bromochloromethane <0.48 1.0 Dibromochloromethane <0.17 1.0 Bromodichloromethane <0.17 1.0 Ethylbenzene <0.13 1.0 Iodomethane <1.7 5.0 Methylene Chloride <0.23 1.0 Styrene <0.11- 1.0 Tetrachloroethene <0.17 1.0 D Prepared Analyzed Dil Fac 02/03/2312:17 02/06/2312:04 1 02/03/2312:17 02/06/2312:04 1 Lab Sample ID: 752-1993-7 Matrix: Water L D Prepared Analyzed Dil Fac C 02/03/23 16:03 1 Prepared Analyzed Dil Fac 02/03/23 16:03 1 MDL Unit D Prepared Analyzed Dil Fac 0.17 ug/L 02/03/23 04:48 1 0.12 ug/L 02/03/23 04:48 1 0.28 ug/L 02/03/23 04:48 1 0.14 ug/L 02/03/23 04:48 1 0.13 ug/L 02/03/23 04:48 1 0.21 ug/L 02/03/23 04:48 1 0.48 ug/L 02/03/23 04:48 1 0.19 ug/L 02/03/23 04:48 1 0.21 ug/L 02/03/23 04:48 1 0.10 ug/L 02/03/23 04:48 1 10 ug/L 02/03/23 04:48 1 0.88 ug/L 02/03/23 04:48 1 1.1 ug/L 02/03/23 04:48 1 10 ug/L 02/03/23 04:48 1 3.5 ug/L 02/03/23 04:48 1 0.15 ug/L 02/03/23 04:48 1 0.22 ug/L 02/03/23 04:48 1 0.14 ug/L 02/03/23 04:48 1 1.5 ug/L 02/03/23 04:48 1 0.17 ug/L 02/03/23 04:48 1 0.17 ug/L 02/03/23 04:48 1 0.23 ug/L 02/03/23 04:48 1 0.18 ug/L 02/03/23 04:48 1 0.13 ug/L 02/03/23 04:48 1 0.15 ug/L 02/03/23 04:48 1 0.20 ug/L 02/03/23 04:48 1 0.48 ug/L 02/03/23 04:48 1 0.17 ug/L 02/03/23 04:48 1 0.17 ug/L 02/03/23 04:48 1 0.13 ug/L 02/03/23 04:48 1 1.7 ug/L 02/03/23 04:48 1 0.23 ug/L 02/03/23 04:48 1 0.11 ug/L 02/03/23 04:48 1 0.17 ug/L 02/03/23 04:48 1 Eurofins Raleigh Page 37 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-SW6 Lab Sample ID: 752-1993-7 Date Collected: 01/24/23 12:07 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Toluene <0.14 1.0 0.14 ug/L 02/03/23 04:48 1 trans- 1,2-Dichloroethene <0.21 1.0 0.21 ug/L 02/03/23 04:48 1 �. trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/03/23 04:48 1 trans- l,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/03/23 04:48 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/03/23 04:48 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/03/23 04:48 1 Vinyl chloride <0.32 1.0 0.32 ug/L 02/03/23 04:48 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/03/23 04:48 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/03/23 04:48 1 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/03/23 04:48 1 1,4-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/03/23 04:48 1 Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/03/23 04:48 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/03/23 04:48 1 Tetrahydrofuran <0.53 1.0 0.53 ug/L 02/03/23 04:48 1 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 106 53 - 136 02103123 04:48 1 Dibromofluoromethane (Surr) 113 67- 129 02103123 04.48 1 Toluene-d8 (Surr) 113 59 - 134 02103123 04:48 1 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 02/03/2312:17 02/06/2312:51 1 Barium 54 10 4.4 ug/L 02/03/2312:17 02/06/2312:51 1 Beryllium <0.30 4.0 0.30 ug/L 02/03/2312:17 02/06/2312:51 1 Cadmium <0.44 5.0 0.44 ug/L 02/03/2312:17 02/06/2312:51 1 Chromium 3.2 J 10 1.1 ug/L 02/03/2312:17 02/06/2312:51 1 Cobalt <1.4 10 1.4 ug/L 02/03/2312:17 02/06/2312:51 1 Copper 6.0 J 20 3.2 ug/L 02/03/2312:17 02/06/2312:51 1 Selenium <10 20 10 ug/L 02/03/2312:17 02/06/2312:51 1 Lead <6.6 10 6.6 ug/L 02/03/2312:17 02/06/2312:51 1 Nickel <3.3 40 3.3 ug/L 02/03/2312:17 02/06/2312:51 1 Silver <1.5 10 1.5 ug/L 02/03/2312:17 02/06/2312:51 1 Vanadium 7.0 J 10 1.0 ug/L 02/03/2312:17 02/06/2312:51 1 Zinc <8.7 20 8.7 ug/L 02/03/2312:17 02/06/2312:51 1 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony 0.39 J B 5.0 0.34 ug/L 02/03/23 12:17 02/06/23 12:16 1 Thallium <0.26 1.0 0.26 ug/L 02/03/2312:17 02/06/2312:16 1 Client Sample ID: 4116-MW3 Lab Sample ID: 752-1993-8 Date Collected: 01/24/23 09:50 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit D 1,4-Dioxane 2.3 0.50 0.32 ug/L Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 99 70 - 130 Prepared Analyzed Dil Fac 02/03/23 16:30 1 Prepared Analyzed Dil Fac 02/03/23 16:30 1 Eurofins Raleigh Page 38 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-MW3 Lab Sample ID: 752-1993-8 Date Collected: 01/24/23 09:50 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL 1,1,1,2-Tetrachloroethane <0.17 1.0 1,1,1-Trichloroethane <0.12 1.0 1,1,2,2-Tetrachloroethane <0.28 1.0 1,1,2-Trichloroethane <0.14 1.0 1,1-Dichloroethane <0.13 1.0 1,1-Dichloroethene <0.21 1.0 1,2-Dibromo-3-Chloropropane <0.48 1.0 1,2-Dichlorobenzene <0.19 1.0 1,2-Dichloroethane <0.21 1.0 1,2-Dichloropropane <0.10 *- 1.0 2-Butanone (MEK) <10 *+ 20 2-Hexanone <0.88 5.0 4-Methyl-2-pentanone (MIBK) <1.1 5.0 Acetone <10 20 Acrylonitrile <3.5 10 Benzene <0.15 *- 1.0 Bromoform <0.22 1.0 Bromomethane <0.14 1.0 Carbon disulfide <1.5 5.0 Carbon tetrachloride <0.17 1.0 Chlorobenzene <0.17 *- 1.0 Chloroethane <0.23 1.0 Chloroform <0.18 * 1.0 Chloromethane <0.13 1.0 cis-1,2-Dichloroethene <0.15 1.0 cis-1,3-Dichloropropene <0.20 1.0 Bromochloromethane <0.48 1.0 Dibromochloromethane <0.17 1.0 Bromodichloromethane <0.17 1.0 Ethylbenzene <0.13 1.0 lodomethane <1.7 5.0 Methylene Chloride <0.23 1.0 Styrene <0.11 *- 1.0 Tetrachloroethene <0.17 1.0 Toluene <0.14 1.0 trans- 1,2-Dichloroethene <0.21 1.0 trans- 1,3-Dichloropropene <0.15 1.0 trans- 1,4-Dichloro-2-butene <0.70 1.0 Trichloroethene <0.15 1.0 Vinyl acetate <0.95 5.0 Vinyl chloride <0.32 1.0 Xylenes, Total <0.45 3.0 Dibromomethane <0.27 1.0 1,2-Dibromoethane <0.66 1.0 1,4-Dichlorobenzene <0.19 *- 1.0 Trichlorofluoromethane <0.24 1.0 1,2,3-Trichloropropane <0.49 1.0 Tetrahydrofuran <0.53 1.0 MDL Unit D Prepared Analyzed Dil Fac 0.17 ug/L 02/03/23 05:19 1 0.12 ug/L 02/03/23 05:19 1 0.28 ug/L 02/03/23 05:19 1 0.14 ug/L 02/03/23 05:19 1 0.13 ug/L 02/03/23 05:19 1 0.21 ug/L 02/03/23 05:19 1 0.48 ug/L 02/03/23 05:19 1 0.19 ug/L 02/03/23 05:19 1 0.21 ug/L 02/03/23 05:19 1 0.10 ug/L 02/03/23 05:19 1 10 ug/L 02/03/23 05:19 1 0.88 ug/L 02/03/23 05:19 1 1.1 ug/L 02/03/23 05:19 1 10 ug/L 02/03/23 05:19 1 3.5 ug/L 02/03/23 05:19 1 0.15 ug/L 02/03/23 05:19 1 0.22 ug/L 02/03/23 05:19 1 0.14 ug/L 02/03/23 05:19 1 1.5 ug/L 02/03/23 05:19 1 0.17 ug/L 02/03/23 05:19 1 0.17 ug/L 02/03/23 05:19 1 0.23 ug/L 02/03/23 05:19 1 0.18 ug/L 02/03/23 05:19 1 0.13 ug/L 02/03/23 05:19 1 0.15 ug/L 02/03/23 05:19 1 0.20 ug/L 02/03/23 05:19 1 0.48 ug/L 02/03/23 05:19 1 0.17 ug/L 02/03/23 05:19 1 0.17 ug/L 02/03/23 05:19 1 0.13 ug/L 02/03/23 05:19 1 1.7 ug/L 02/03/23 05:19 1 0.23 ug/L 02/03/23 05:19 1 0.11 ug/L 02/03/23 05:19 1 0.17 ug/L 02/03/23 05:19 1 0.14 ug/L 02/03/23 05:19 1 0.21 ug/L 02/03/23 05:19 1 0.15 ug/L 02/03/23 05:19 1 0.70 ug/L 02/03/23 05:19 1 0.15 ug/L 02/03/23 05:19 1 0.95 ug/L 02/03/23 05:19 1 0.32 ug/L 02/03/23 05:19 1 0.45 ug/L 02/03/23 05:19 1 0.27 ug/L 02/03/23 05:19 1 0.66 ug/L 02/03/23 05:19 1 0.19 ug/L 02/03/23 05:19 1 0.24 ug/L 02/03/23 05:19 1 0.49 ug/L 02/03/23 05:19 1 0.53 ug/L 02/03/23 05:19 1 0 Eurofins Raleigh Page 39 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-MW3 Lab Sample ID: 752-1993-8 Date Collected: 01/24/23 09:50 Matrix: Water Date Received: 01/25/23 14:45 Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 102 53 - 136 Dibromofluoromethane (Surr) 114 67- 129 Toluene-d8 (Surr) 110 59 - 134 Method: EPA 300.0 - Anions, Ion Chromatography Analyte Result Qualifier RL Chloride 14 5.0 Sulfate 9.7 5.0 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL Arsenic <6.4 20 Barium 51 10 Beryllium <0.30 4.0 Cadmium <0.44 5.0 Chromium 4.8 J 10 Cobalt 2.2 J 10 Copper <3.2 20 Selenium <10 20 Lead <6.6 10 Nickel <3.3 40 Silver <1.5 10 Vanadium 1.4 J 10 Zinc <8.7 20 Iron 4700 100 Manganese 150 10 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL Antimony <0.34 5.0 Thallium <0.26 1.0 Method: SW846 7470A - Mercury (CVAA) MDL Unit 2.2 mg/L 2.9 mg/L MDL Unit 6.4 ug/L 4.4 ug/L 0.30 ug/L 0.44 ug/L 1.1 ug/L 1.4 ug/L 3.2 ug/L 10 ug/L 6.6 ug/L 3.3 ug/L 1.5 ug/L 1.0 ug/L 8.7 ug/L 20 ug/L 1.3 ug/L MDL Unit 0.34 ug/L 0.26 ug/L Analyte Result Qualifier RL MDL Unit Mercury <0.080 0.20 0.080 ug/L General Chemistry Analyte Result Qualifier RL MDL Unit Total Dissolved Solids (SM 2540C) 160 50 50 mg/L Client Sample ID: 4116-MW4S Date Collected: 01/24/23 12:15 Date Received: 01/25/23 14:45 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit 1,4-Dioxane 2.3 0.50 0.32 ug/L Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 97 70- 130 Prepared Analyzed 02103123 05:19 02103123 05:19 02103123 05:19 D Prepared Analyzed 02/02/23 21:09 02/02/23 21:09 D Prepared Analyzed 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 02/03/2312:17 02/06/2312:54 D Prepared Analyzed Dil Fac 02/03/2312:17 02/06/2312:20 1 02/03/2312:17 02/06/2312:20 1 D Prepared Analyzed Dil Fac 02/03/2313:06 02/06/2312:41 1 D Prepared Analyzed Dil Fac 01 /31 /23 10:37 1 Lab Sample ID: 752-1993-9 Matrix: Water D Prepared Analyzed Dil Fac 02/03/23 16:57 1 Prepared Analyzed Dil Fac 02103123 16:57 1 Eurofins Raleigh Page 40 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-MW4S Lab Sample ID: 752-1993-9 Date Collected: 01/24/23 12:15 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL 1,1,1,2-Tetrachloroethane <0.17 1.0 1,1,1-Trichloroethane <0.12 1.0 1,1,2,2-Tetrachloroethane <0.28 1.0 1,1,2-Trichloroethane <0.14 1.0 1,1-Dichloroethane <0.13 1.0 1,1-Dichloroethene <0.21 1.0 1,2-Dibromo-3-Chloropropane <0.48 1.0 1,2-Dichlorobenzene <0.19 1.0 1,2-Dichloroethane <0.21 1.0 1,2-Dichloropropane <0.10 *- 1.0 2-Butanone (MEK) <10 *+ 20 2-Hexanone <0.88 5.0 4-Methyl-2-pentanone (MIBK) <1.1 5.0 Acetone <10 20 Acrylonitrile <3.5 10 Benzene <0.15 *- 1.0 Bromoform <0.22 1.0 Bromomethane <0.14 1.0 Carbon disulfide <1.5 5.0 Carbon tetrachloride <0.17 1.0 Chlorobenzene <0.17 *- 1.0 Chloroethane <0.23 1.0 Chloroform <0.18 * 1.0 Chloromethane <0.13 1.0 cis-1,2-Dichloroethene <0.15 1.0 cis-1,3-Dichloropropene <0.20 1.0 Bromochloromethane <0.48 1.0 Dibromochloromethane <0.17 1.0 Bromodichloromethane <0.17 1.0 Ethylbenzene <0.13 1.0 lodomethane <1.7 5.0 Methylene Chloride <0.23 1.0 Styrene <0.11 *- 1.0 Tetrachloroethene <0.17 1.0 Toluene <0.14 1.0 trans- 1,2-Dichloroethene <0.21 1.0 trans- 1,3-Dichloropropene <0.15 1.0 trans- 1,4-Dichloro-2-butene <0.70 1.0 Trichloroethene <0.15 1.0 Vinyl acetate <0.95 5.0 Vinyl chloride <0.32 1.0 Xylenes, Total <0.45 3.0 Dibromomethane <0.27 1.0 1,2-Dibromoethane <0.66 1.0 1,4-Dichlorobenzene <0.19 *- 1.0 Trichlorofluoromethane <0.24 1.0 1,2,3-Trichloropropane <0.49 1.0 Tetrahydrofuran <0.53 1.0 MDL Unit D Prepared Analyzed Dil Fac 0.17 ug/L 02/03/23 05:51 1 0.12 ug/L 02/03/23 05:51 1 0.28 ug/L 02/03/23 05:51 1 0.14 ug/L 02/03/23 05:51 1 0.13 ug/L 02/03/23 05:51 1 0.21 ug/L 02/03/23 05:51 1 0.48 ug/L 02/03/23 05:51 1 0.19 ug/L 02/03/23 05:51 1 0.21 ug/L 02/03/23 05:51 1 0.10 ug/L 02/03/23 05:51 1 10 ug/L 02/03/23 05:51 1 0.88 ug/L 02/03/23 05:51 1 1.1 ug/L 02/03/23 05:51 1 10 ug/L 02/03/23 05:51 1 3.5 ug/L 02/03/23 05:51 1 0.15 ug/L 02/03/23 05:51 1 0.22 ug/L 02/03/23 05:51 1 0.14 ug/L 02/03/23 05:51 1 1.5 ug/L 02/03/23 05:51 1 0.17 ug/L 02/03/23 05:51 1 0.17 ug/L 02/03/23 05:51 1 0.23 ug/L 02/03/23 05:51 1 0.18 ug/L 02/03/23 05:51 1 0.13 ug/L 02/03/23 05:51 1 0.15 ug/L 02/03/23 05:51 1 0.20 ug/L 02/03/23 05:51 1 0.48 ug/L 02/03/23 05:51 1 0.17 ug/L 02/03/23 05:51 1 0.17 ug/L 02/03/23 05:51 1 0.13 ug/L 02/03/23 05:51 1 1.7 ug/L 02/03/23 05:51 1 0.23 ug/L 02/03/23 05:51 1 0.11 ug/L 02/03/23 05:51 1 0.17 ug/L 02/03/23 05:51 1 0.14 ug/L 02/03/23 05:51 1 0.21 ug/L 02/03/23 05:51 1 0.15 ug/L 02/03/23 05:51 1 0.70 ug/L 02/03/23 05:51 1 0.15 ug/L 02/03/23 05:51 1 0.95 ug/L 02/03/23 05:51 1 0.32 ug/L 02/03/23 05:51 1 0.45 ug/L 02/03/23 05:51 1 0.27 ug/L 02/03/23 05:51 1 0.66 ug/L 02/03/23 05:51 1 0.19 ug/L 02/03/23 05:51 1 0.24 ug/L 02/03/23 05:51 1 0.49 ug/L 02/03/23 05:51 1 0.53 ug/L 02/03/23 05:51 1 0 Eurofins Raleigh Page 41 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-MW4S Lab Sample ID: 752-1993-9 Date Collected: 01/24/23 12:15 Matrix: Water Date Received: 01/25/23 14:45 Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 103 53 - 136 Dibromofluoromethane (Surr) 112 67- 129 Toluene-d8 (Surr) 112 59 - 134 Method: EPA 300.0 - Anions, Ion Chromatography Analyte Result Qualifier RL Chloride 17 5.0 Sulfate 26 5.0 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL Arsenic <6.4 20 Barium 91 10 Beryllium <0.30 4.0 Cadmium <0.44 5.0 Chromium <1.1 10 Cobalt <1.4 10 Copper <3.2 20 Selenium <10 20 Lead <6.6 10 Nickel <3.3 40 Silver <1.5 10 Vanadium 1.4 J 10 Zinc <8.7 20 Iron 810 100 Manganese 33 10 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL Antimony <0.34 5.0 Thallium <0.26 1.0 Method: SW846 7470A - Mercury (CVAA) MDL Unit 2.2 mg/L 2.9 mg/L MDL Unit 6.4 ug/L 4.4 ug/L 0.30 ug/L 0.44 ug/L 1.1 ug/L 1.4 ug/L 3.2 ug/L 10 ug/L 6.6 ug/L 3.3 ug/L 1.5 ug/L 1.0 ug/L 8.7 ug/L 20 ug/L 1.3 ug/L MDL Unit 0.34 ug/L 0.26 ug/L Analyte Result Qualifier RL MDL Unit Mercury <0.080 0.20 0.080 ug/L General Chemistry Analyte Result Qualifier RL MDL Unit Total Dissolved Solids (SM 2540C) 840 50 50 mg/L Client Sample ID: 4116-MW7S Date Collected: 01/24/23 11:01 Date Received: 01/25/23 14:45 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit 1,4-Dioxane 23 5.0 3.2 ug/L Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 103 70 - 130 Prepared Analyzed 02103123 05:51 02103123 05:51 02103123 05:51 D Prepared Analyzed 02/02/23 21:24 02/02/23 21:24 D Prepared Analyzed 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 02/03/2312:17 02/06/2312:57 D Prepared Analyzed Dil Fac 02/03/2312:17 02/06/2312:24 1 02/03/2312:17 02/06/2312:24 1 D Prepared Analyzed Dil Fac 02/03/2313:06 02/06/2312:44 1 D Prepared Analyzed Dil Fac 01 /31 /23 10:37 1 Lab Sample ID: 752-1993-10 Matrix: Water D Prepared Analyzed Dil Fac 02/03/23 17:52 10 Prepared Analyzed Dil Fac 02103123 17:52 10 Eurofins Raleigh Page 42 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-MW7S Lab Sample ID: 752-1993-10 Date Collected: 01/24/23 11:01 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL 1,1,1,2-Tetrachloroethane <0.17 1.0 1,1,1-Trichloroethane <0.12 1.0 1,1,2,2-Tetrachloroethane <0.28 1.0 1,1,2-Trichloroethane <0.14 1.0 1,1-Dichloroethane <0.13 1.0 1,1-Dichloroethene <0.21 1.0 1,2-Dibromo-3-Chloropropane <0.48 1.0 1,2-Dichlorobenzene <0.19 1.0 1,2-Dichloroethane <0.21 1.0 1,2-Dichloropropane <0.10 *- 1.0 2-Butanone (MEK) <10 *+ 20 2-Hexanone <0.88 5.0 4-Methyl-2-pentanone (MIBK) <1.1 5.0 Acetone <10 20 Acrylonitrile <3.5 10 Benzene 1.2 H 1.0 Bromoform <0.22 1.0 Bromomethane <0.14 1.0 Carbon disulfide <1.5 5.0 Carbon tetrachloride <0.17 1.0 Chlorobenzene <0.17 *- 1.0 Chloroethane <0.23 1.0 Chloroform <0.18 * 1.0 Chloromethane <0.13 1.0 cis-1,2-Dichloroethene <0.15 1.0 cis-1,3-Dichloropropene <0.20 1.0 Bromochloromethane <0.48 1.0 Dibromochloromethane <0.17 1.0 Bromodichloromethane <0.17 1.0 Ethylbenzene <0.13 1.0 lodomethane <1.7 5.0 Methylene Chloride 0.58 J 1.0 Styrene <0.11 *- 1.0 Tetrachloroethene <0.17 1.0 Toluene <0.14 1.0 trans- 1,2-Dichloroethene <0.21 1.0 trans- 1,3-Dichloropropene <0.15 1.0 trans- 1,4-Dichloro-2-butene <0.70 1.0 Trichloroethene <0.15 1.0 Vinyl acetate <0.95 5.0 Vinyl chloride <0.32 1.0 Xylenes, Total <0.45 3.0 Dibromomethane <0.27 1.0 1,2-Dibromoethane <0.66 1.0 1,4-Dichlorobenzene <0.19 *- 1.0 Trichlorofluoromethane <0.24 1.0 1,2,3-Trichloropropane <0.49 1.0 Tetrahydrofuran <0.53 1.0 MDL Unit D Prepared Analyzed Dil Fac 0.17 ug/L 02/03/23 06:22 1 0.12 ug/L 02/03/23 06:22 1 0.28 ug/L 02/03/23 06:22 1 0.14 ug/L 02/03/23 06:22 1 0.13 ug/L 02/03/23 06:22 1 0.21 ug/L 02/03/23 06:22 1 0.48 ug/L 02/03/23 06:22 1 0.19 ug/L 02/03/23 06:22 1 0.21 ug/L 02/03/23 06:22 1 0.10 ug/L 02/03/23 06:22 1 10 ug/L 02/03/23 06:22 1 0.88 ug/L 02/03/23 06:22 1 1.1 ug/L 02/03/23 06:22 1 10 ug/L 02/03/23 06:22 1 3.5 ug/L 02/03/23 06:22 1 0.15 ug/L 02/16/23 03:15 1 0.22 ug/L 02/03/23 06:22 1 0.14 ug/L 02/03/23 06:22 1 1.5 ug/L 02/03/23 06:22 1 0.17 ug/L 02/03/23 06:22 1 0.17 ug/L 02/03/23 06:22 1 0.23 ug/L 02/03/23 06:22 1 0.18 ug/L 02/03/23 06:22 1 0.13 ug/L 02/03/23 06:22 1 0.15 ug/L 02/03/23 06:22 1 0.20 ug/L 02/03/23 06:22 1 0.48 ug/L 02/03/23 06:22 1 0.17 ug/L 02/03/23 06:22 1 0.17 ug/L 02/03/23 06:22 1 0.13 ug/L 02/03/23 06:22 1 1.7 ug/L 02/03/23 06:22 1 0.23 ug/L 02/03/23 06:22 1 0.11 ug/L 02/03/23 06:22 1 0.17 ug/L 02/03/23 06:22 1 0.14 ug/L 02/03/23 06:22 1 0.21 ug/L 02/03/23 06:22 1 0.15 ug/L 02/03/23 06:22 1 0.70 ug/L 02/03/23 06:22 1 0.15 ug/L 02/03/23 06:22 1 0.95 ug/L 02/03/23 06:22 1 0.32 ug/L 02/03/23 06:22 1 0.45 ug/L 02/03/23 06:22 1 0.27 ug/L 02/03/23 06:22 1 0.66 ug/L 02/03/23 06:22 1 0.19 ug/L 02/03/23 06:22 1 0.24 ug/L 02/03/23 06:22 1 0.49 ug/L 02/03/23 06:22 1 0.53 ug/L 02/03/23 06:22 1 0 Eurofins Raleigh Page 43 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-MW7S Lab Sample ID: 752-1993-10 Date Collected: 01/24/23 11:01 Matrix: Water Date Received: 01/25/23 14:45 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 105 53 - 136 02103123 06:22 1 4-Bromofluorobenzene (Surr) 126 53 - 136 02116123 03:15 1 Dibromofluoromethane (Surr) 110 67- 129 02103123 06:22 1 MM Dibromofluoromethane (Surr) 104 67- 129 02116123 03:15 1 Toluene-d8 (Surr) 110 59 - 134 02103123 06:22 1 Toluene-d8 (Surr) 123 59 - 134 02116123 03:15 1 Method: EPA 300.0 - Anions, Ion Chromatography Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Chloride 82 5.0 2.2 mg/L 02/02/23 21:38 1 Sulfate 46 5.0 2.9 mg/L 02/02/23 21:38 1 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 02/03/2312:17 02/06/2313:00 1 Barium 790 10 4.4 ug/L 02/03/2312:17 02/06/2313:00 1 Beryllium <0.30 4.0 0.30 ug/L 02/03/2312:17 02/06/2313:00 1 Cadmium <0.44 5.0 0.44 ug/L 02/03/2312:17 02/06/2313:00 1 Chromium <1.1 10 1.1 ug/L 02/03/2312:17 02/06/2313:00 1 Cobalt <1.4 10 1.4 ug/L 02/03/2312:17 02/06/2313:00 1 Copper <3.2 20 3.2 ug/L 02/03/2312:17 02/06/2313:00 1 Selenium <10 20 10 ug/L 02/03/2312:17 02/06/2313:00 1 Lead <6.6 10 6.6 ug/L 02/03/2312:17 02/06/2313:00 1 Nickel 20 J 40 3.3 ug/L 02/03/2312:17 02/06/2313:00 1 Silver <1.5 10 1.5 ug/L 02/03/2312:17 02/06/2313:00 1 Vanadium 9.3 J 10 1.0 ug/L 02/03/2312:17 02/06/2313:00 1 Zinc <8.7 20 8.7 ug/L 02/03/2312:17 02/06/2313:00 1 Iron 65 J 100 20 ug/L 02/03/2312:17 02/06/2313:00 1 Manganese 180 10 1.3 ug/L 02/03/2312:17 02/06/2313:00 1 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony <0.34 5.0 0.34 ug/L 02/03/2312:17 02/06/2312:29 1 Thallium <0.26 1.0 0.26 ug/L 02/03/2312:17 02/06/2312:29 1 Method: SW846 7470A - Mercury (CVAA) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Mercury <0.080 0.20 0.080 ug/L 02/03/2313:06 02/06/2312:46 1 General Chemistry Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Total Dissolved Solids (SM 2540C) 140 50 50 mg/L 01/31/23 10:37 1 Client Sample ID: 4116-Field Blank Lab Sample ID: 752-1993-11 Date Collected: 01/24/23 14:02 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,4-Dioxane <0.32 0.50 0.32 ug/L 02/03/2313:48 1 Eurofins Raleigh Page 44 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-Field Blank Lab Sample ID: 752-1993-11 Date Collected: 01/24/23 14:02 Matrix: Water Date Received: 01/25/23 14:45 Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 97 70 - 130 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL 1,1,1,2-Tetrachloroethane <0.17 1.0 1,1,1-Trichloroethane <0.12 1.0 1,1,2,2-Tetrachloroethane <0.28 1.0 1,1,2-Trichloroethane <0.14 1.0 1,1-Dichloroethane <0.13 1.0 1,1-Dichloroethene <0.21 1.0 1,2-Dibromo-3-Chloropropane <0.48 1.0 1,2-Dichlorobenzene <0.19 1.0 1,2-Dichloroethane <0.21 1.0 1,2-Dichloropropane <0.10 `- 1.0 2-Butanone (MEK) <10 <+ 20 2-Hexanone <0.88 5.0 4-Methyl-2-pentanone (MIBK) <1.1 5.0 Acetone 21 20 Acrylonitrile <3.5 10 Benzene <0.15 1.0 Bromoform <0.22 1.0 Bromomethane <0.14 1.0 Carbon disulfide <1.5 5.0 Carbon tetrachloride <0.17 1.0 Chlorobenzene <0.17 *- 1.0 Chloroethane <0.23 1.0 Chloroform <0.18- 1.0 Chloromethane <0.13 1.0 cis-1,2-Dichloroethene <0.15 1.0 cis-1,3-Dichloropropene <0.20 1.0 Bromochloromethane <0.48 1.0 Dibromochloromethane <0.17 1.0 Bromodichloromethane <0.17 1.0 Ethylbenzene <0.13 1.0 lodomethane <1.7 5.0 Methylene Chloride <0.23 1.0 Styrene <0.11 '- 1.0 Tetrachloroethene <0.17 1.0 Toluene <0.14 1.0 trans- 1,2-Dichloroethene <0.21 1.0 trans- 1,3-Dichloropropene <0.15 1.0 trans- 1,4-Dichloro-2-butene <0.70 1.0 Trichloroethene <0.15 1.0 Vinyl acetate <0.95 5.0 Vinyl chloride <0.32 1.0 Xylenes, Total <0.45 3.0 Dibromomethane <0.27 1.0 1,2-Dibromoethane <0.66 1.0 1,4-Dichlorobenzene <0.19- 1.0 Trichlorofluoromethane <0.24 1.0 Prepared Analyzed Dil Fac 02103123 13:48 1 MDL Unit D Prepared Analyzed Dil Fac 0.17 ug/L 02/02/23 22:01 1 0.12 ug/L 02/02/23 22:01 1 0.28 ug/L 02/02/23 22:01 1 0.14 ug/L 02/02/23 22:01 1 0.13 ug/L 02/02/23 22:01 1 0.21 ug/L 02/02/23 22:01 1 0.48 ug/L 02/02/23 22:01 1 0.19 ug/L 02/02/23 22:01 1 0.21 ug/L 02/02/23 22:01 1 0.10 ug/L 02/02/23 22:01 1 10 ug/L 02/02/23 22:01 1 0.88 ug/L 02/02/23 22:01 1 1.1 ug/L 02/02/23 22:01 1 10 ug/L 02/02/23 22:01 1 3.5 ug/L 02/02/23 22:01 1 0.15 ug/L 02/02/23 22:01 1 0.22 ug/L 02/02/23 22:01 1 0.14 ug/L 02/02/23 22:01 1 1.5 ug/L 02/02/23 22:01 1 0.17 ug/L 02/02/23 22:01 1 0.17 ug/L 02/02/23 22:01 1 0.23 ug/L 02/02/23 22:01 1 0.18 ug/L 02/02/23 22:01 1 0.13 ug/L 02/02/23 22:01 1 0.15 ug/L 02/02/23 22:01 1 0.20 ug/L 02/02/23 22:01 1 0.48 ug/L 02/02/23 22:01 1 0.17 ug/L 02/02/23 22:01 1 0.17 ug/L 02/02/23 22:01 1 0.13 ug/L 02/02/23 22:01 1 1.7 ug/L 02/02/23 22:01 1 0.23 ug/L 02/02/23 22:01 1 0.11 ug/L 02/02/23 22:01 1 0.17 ug/L 02/02/23 22:01 1 0.14 ug/L 02/02/23 22:01 1 0.21 ug/L 02/02/23 22:01 1 0.15 ug/L 02/02/23 22:01 1 0.70 ug/L 02/02/23 22:01 1 0.15 ug/L 02/02/23 22:01 1 0.95 ug/L 02/02/23 22:01 1 0.32 ug/L 02/02/23 22:01 1 0.45 ug/L 02/02/23 22:01 1 0.27 ug/L 02/02/23 22:01 1 0.66 ug/L 02/02/23 22:01 1 0.19 ug/L 02/02/23 22:01 1 0.24 ug/L 02/02/23 22:01 1 0 Eurofins Raleigh Page 45 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-Field Blank Lab Sample ID: 752-1993-11 Date Collected: 01/24/23 14:02 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) Analyte Result Qualifier RL MDL Unit 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L Tetrahydrofuran <0.53 1.0 0.53 ug/L Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 104 53 - 136 4-Bromofluorobenzene (Surr) 119 53 - 136 Dibromofluoromethane (Surr) 108 67- 129 Dibromofluoromethane (Surr) 104 67- 129 Toluene-d8 (Surr) 110 59 - 134 Toluene-d8 (Surr) 120 59 - 134 Method: SW846 6010D - Metals (ICP) - Total Recoverable Analyte Result Qualifier RL Arsenic <6.4 20 Barium <4.4 10 Beryllium <0.30 4.0 Cadmium <0.44 5.0 Chromium <1.1 10 Cobalt <1.4 10 Copper <3.2 20 Selenium <10 20 Lead <6.6 10 Nickel <3.3 40 Silver <1.5 10 Vanadium <1.0 10 Zinc <8.7 20 Iron <20 100 Manganese <1.3 10 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable Analyte Result Qualifier RL Antimony <0.34 5.0 Thallium <0.26 1.0 MDL Unit 6.4 ug/L 4.4 ug/L 0.30 ug/L 0.44 ug/L 1.1 ug/L 1.4 ug/L 3.2 ug/L 10 ug/L 6.6 ug/L 3.3 ug/L 1.5 ug/L 1.0 ug/L 8.7 ug/L 20 ug/L 1.3 ug/L MDL Unit 0.34 ug/L 0.26 ug/L D Prepared Analyzed 02/02/23 22:01 02/02/23 22:01 Prepared Analyzed 02102123 22:01 02116123 04:18 02102123 22:01 02/16/23 04:18 02/02/23 22:01 02/16/23 04:18 D Prepared Analyzed 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 02/03/2312:17 02/06/2313:09 D Prepared Analyzed 02/03/2312:17 02/06/2312:33 02/03/2312:17 02/06/2312:33 Method: SW846 7470A - Mercury (CVAA) Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Mercury <0.080 0.20 0.080 ug/L 02/03/2313:06 02/06/2312:49 1 Client Sample ID: 4116-Trip Blank Lab Sample ID: 752-1993-12 Date Collected: 01/24/23 09:50 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Analyte Result Qualifier RL MDL Unit 1,4-Dioxane <0.32 0.50 0.32 ug/L Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 108 70 - 130 D Prepared Analyzed Dil Fac 02/03/23 13:20 1 Prepared Analyzed Dil Fac 02103123 13:20 1 Eurofins Raleigh Page 46 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Client Sample ID: 4116-Trip Blank Lab Sample ID: 752-1993-12 Date Collected: 01/24/23 09:50 Matrix: Water Date Received: 01/25/23 14:45 Method: SW846 8260D - Volatile Organic Compounds by GC/MS Analyte Result Qualifier RL 1,1,1,2-Tetrachloroethane <0.17 1.0 1,1,1-Trichloroethane <0.12 1.0 1,1,2,2-Tetrachloroethane <0.28 1.0 1,1,2-Trichloroethane <0.14 1.0 1,1-Dichloroethane <0.13 1.0 1,1-Dichloroethene <0.21 1.0 1,2-Dibromo-3-Chloropropane <0.48 1.0 1,2-Dichlorobenzene <0.19 1.0 1,2-Dichloroethane <0.21 1.0 1,2-Dichloropropane <0.10- 1.0 2-Butanone (MEK) <10 *+ 20 2-Hexanone <0.88 5.0 4-Methyl-2-pentanone (MIBK) <1.1 5.0 Acetone <10 20 Acrylonitrile <3.5 10 Benzene <0.15- 1.0 Bromoform <0.22 1.0 Bromomethane <0.14 1.0 Carbon disulfide <1.5 5.0 Carbon tetrachloride <0.17 1.0 Chlorobenzene <0.17 "- 1.0 Chloroethane <0.23 1.0 Chloroform 0.33 J *- 1.0 Chloromethane <0.13 1.0 cis-1,2-Dichloroethene <0.15 1.0 cis-1,3-Dichloropropene <0.20 1.0 Bromochloromethane <0.48 1.0 Dibromochloromethane <0.17 1.0 Bromodichloromethane <0.17 1.0 Ethylbenzene <0.13 1.0 lodomethane <1.7 5.0 Methylene Chloride 0.26 J 1.0 Styrene <0.11 "- 1.0 Tetrachloroethene <0.17 1.0 Toluene <0.14 1.0 trans- 1,2-Dichloroethene <0.21 1.0 trans- 1,3-Dichloropropene <0.15 1.0 trans- 1,4-Dichloro-2-butene <0.70 1.0 Trichloroethene <0.15 1.0 Vinyl acetate <0.95 5.0 Vinyl chloride <0.32 1.0 Xylenes, Total <0.45 3.0 Dibromomethane <0.27 1.0 1,2-Dibromoethane <0.66 1.0 1,4-Dichlorobenzene <0.19 `- 1.0 Trichlorofluoromethane <0.24 1.0 1,2,3-Trichloropropane <0.49 1.0 Tetrahydrofuran <0.53 1.0 MDL Unit D Prepared Analyzed Dil Fac 0.17 ug/L 02/02/23 21:30 1 0.12 ug/L 02/02/23 21:30 1 0.28 ug/L 02/02/23 21:30 1 0.14 ug/L 02/02/23 21:30 1 0.13 ug/L 02/02/23 21:30 1 0.21 ug/L 02/02/23 21:30 1 0.48 ug/L 02/02/23 21:30 1 0.19 ug/L 02/02/23 21:30 1 0.21 ug/L 02/02/23 21:30 1 0.10 ug/L 02/02/23 21:30 1 10 ug/L 02/02/23 21:30 1 0.88 ug/L 02/02/23 21:30 1 1.1 ug/L 02/02/23 21:30 1 10 ug/L 02/02/23 21:30 1 3.5 ug/L 02/02/23 21:30 1 0.15 ug/L 02/02/23 21:30 1 0.22 ug/L 02/02/23 21:30 1 0.14 ug/L 02/02/23 21:30 1 1.5 ug/L 02/02/23 21:30 1 0.17 ug/L 02/02/23 21:30 1 0.17 ug/L 02/02/23 21:30 1 0.23 ug/L 02/02/23 21:30 1 0.18 ug/L 02/02/23 21:30 1 0.13 ug/L 02/02/23 21:30 1 0.15 ug/L 02/02/23 21:30 1 0.20 ug/L 02/02/23 21:30 1 0.48 ug/L 02/02/23 21:30 1 0.17 ug/L 02/02/23 21:30 1 0.17 ug/L 02/02/23 21:30 1 0.13 ug/L 02/02/23 21:30 1 1.7 ug/L 02/02/23 21:30 1 0.23 ug/L 02/02/23 21:30 1 0.11 ug/L 02/02/23 21:30 1 0.17 ug/L 02/02/23 21:30 1 0.14 ug/L 02/02/23 21:30 1 0.21 ug/L 02/02/23 21:30 1 0.15 ug/L 02/02/23 21:30 1 0.70 ug/L 02/02/23 21:30 1 0.15 ug/L 02/02/23 21:30 1 0.95 ug/L 02/02/23 21:30 1 0.32 ug/L 02/02/23 21:30 1 0.45 ug/L 02/02/23 21:30 1 0.27 ug/L 02/02/23 21:30 1 0.66 ug/L 02/02/23 21:30 1 0.19 ug/L 02/02/23 21:30 1 0.24 ug/L 02/02/23 21:30 1 0.49 ug/L 02/02/23 21:30 1 0.53 ug/L 02/02/23 21:30 1 0 Eurofins Raleigh Page 47 of 98 2/21/2023 Client Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-Trip Blank Lab Sample ID: 752-1993-12 Date Collected: 01/24/23 09:50 Matrix: Water Date Received: 01/25/23 14:45 Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 107 53 - 136 02102123 21:30 1 Dibromofluoromethane (Surr) 109 67- 129 02102123 21:30 1 Toluene-d8 (Surr) 107 59 - 134 02102123 21:30 1 Eurofins Raleigh Page 48 of 98 2/21/2023 Surrogate Summary Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Method: 8260D - Volatile Organic Compounds by GC/MS Matrix: Water Prep TVDe: Total/NA Percent Surrogate Recovery (Acceptance Limits) Lab Sample ID Client Sample ID BFB (53-136) DBFM (67-129) TOL (59-134) 752-1612-1 4116-M W 1 104 109 110 752-1612-2 4116-MW2 130 94 120 752-1612-2 4116-MW2 106 108 107 752-1612-3 4116-MW5 104 109 109 752-1612-4 4116-MW6 134 95 121 752-1612-4 4116-MW6 108 104 108 752-1612-5 4116-MW8 137 S1+ 100 125 752-1612-5 4116-MW8 107 110 112 752-1612-6 4116-AM W 1 102 108 111 752-1612-7 4116-AMW2 108 108 112 752-1993-2 4116-SW 1 105 113 110 752-1993-3 4116-SW2 104 111 111 752-1993-4 4116-SW3 104 110 110 752-1993-5 4116-SW4 104 112 110 752-1993-6 4116-SW5 104 112 110 752-1993-7 4116-SW6 106 113 113 752-1993-8 4116-MW3 102 114 110 752-1993-9 4116-MW4S 103 112 112 752-1993-10 4116-MW7S 126 104 123 752-1993-10 4116-MW7S 105 110 110 752-1993-11 4116-Field Blank 119 104 120 752-1993-11 4116-Field Blank 104 108 110 752-1993-12 4116-Trip Blank 107 109 107 LCS 752-1195/5 Lab Control Sample 123 99 122 LCS 752-879/3 Lab Control Sample 108 100 108 LCSD 752-1195/6 Lab Control Sample Dup 117 97 120 LCSD 752-879/4 Lab Control Sample Dup 107 100 107 MB 752-1195/8 Method Blank 122 107 124 MB 752-879/6 Method Blank 107 102 106 MRL 752-1195/4 Lab Control Sample 289 222 285 MRL 752-879/2 Lab Control Sample 107 103 107 Surrogate Legend BFB = 4-Bromofluorobenzene (Surr) DBFM = Dibromofluoromethane (Surr) TOL = Toluene-d8 (Surr) Method: 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Matrix: Water Prep Type: Total/NA Lab Sample ID Client Sample ID BFB (70-130) 752-1612-1 4116-M W 1 105 752-1612-2 4116-MW2 105 752-1612-3 4116-MW5 100 752-1612-4 4116-MW6 106 752-1612-5 4116-MW8 94 752-1612-6 4116-AM W 1 102 752-1612-7 4116-AMW2 99 Percent Surrogate Recovery (Acceptance Limits) Eurofins Raleigh Page 49 of 98 2/21/2023 Surrogate Summary Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Method: 8260D SIM 14D - Volatile Organic Compounds (GC/MS) (Continued) Matrix: Water Prep Type: Total/NA Percent Surrogate Recovery (Acceptance Limits) Lab Sample ID Client Sample ID BFB (70-130) 752-1993-2 4116-SW 1 104 752-1993-3 4116-SW2 120 752-1993-4 4116-SW3 118 752-1993-5 4116-SW4 99 752-1993-6 4116-SW5 102 752-1993-7 4116-SW6 107 752-1993-8 4116-MW3 99 752-1993-9 4116-MW4S 97 752-1993-10 4116-MW7S 103 752-1993-11 4116-Field Blank 97 752-1993-12 4116-Trip Blank 108 LCS 680-761663/3 Lab Control Sample 116 LCS 680-761808/3 Lab Control Sample 89 MB 680-761663/5 Method Blank 102 MB 680-761808/5 Method Blank 82 Surrogate Legend BFB = 4-Bromofluorobenzene (Surr) Eurofins Raleigh Page 50 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Method: 8260D - Volatile Organic Compounds by GUMS Lab Sample ID: MB 752-1195/8 Client Sample ID: Method Blank Matrix: Water Prep Type: Total/NA Analysis Batch: 1195 MB MB Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,1,1,2-Tetrachloroethane <0.17 1.0 0.17 ug/L 02/15/23 20:27 1 1,1,1-Trichloroethane <0.12 1.0 0.12 ug/L 02/15/23 20:27 1 1,1,2,2-Tetrachloroethane <0.28 1.0 0.28 ug/L 02/15/23 20:27 1 1,1,2-Trichloroethane <0.14 1.0 0.14 ug/L 02/15/23 20:27 1 1,1-Dichloroethane <0.13 1.0 0.13 ug/L 02/15/23 20:27 1 1,1-Dichloroethene 0.220 J 1.0 0.21 ug/L 02/15/23 20:27 1 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/15/23 20:27 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/15/23 20:27 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/15/23 20:27 1 1,2-Dichloropropane <0.10 1.0 0.10 ug/L 02/15/23 20:27 1 2-Butanone (MEK) <10 20 10 ug/L 02/15/23 20:27 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/15/23 20:27 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/15/23 20:27 1 Acetone <10 20 10 ug/L 02/15/23 20:27 1 Acrylonitrile <3.5 10 3.5 ug/L 02/15/23 20:27 1 Benzene <0.15 1.0 0.15 ug/L 02/15/23 20:27 1 Bromoform <0.22 1.0 0.22 ug/L 02/15/23 20:27 1 Bromomethane <0.14 1.0 0.14 ug/L 02/15/23 20:27 1 Carbon disulfide 2.12 J 5.0 1.5 ug/L 02/15/23 20:27 1 Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/15/23 20:27 1 Chlorobenzene <0.17 1.0 0.17 ug/L 02/15/23 20:27 1 Chloroethane <0.23 1.0 0.23 ug/L 02/15/23 20:27 1 Chloroform <0.18 1.0 0.18 ug/L 02/15/23 20:27 1 Chloromethane <0.13 1.0 0.13 ug/L 02/15/23 20:27 1 cis-1,2-Dichloroethene 0.164 J 1.0 0.15 ug/L 02/15/23 20:27 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/15/23 20:27 1 Bromochloromethane <0.48 1.0 0.48 ug/L 02/15/23 20:27 1 Dibromochloromethane <0.17 1.0 0.17 ug/L 02/15/23 20:27 1 Bromodichloromethane <0.17 1.0 0.17 ug/L 02/15/23 20:27 1 Ethylbenzene <0.13 1.0 0.13 ug/L 02/15/23 20:27 1 lodomethane <1.7 5.0 1.7 ug/L 02/15/23 20:27 1 Methylene Chloride <0.23 1.0 0.23 ug/L 02/15/23 20:27 1 Styrene <0.11 1.0 0.11 ug/L 02/15/23 20:27 1 Tetrachloroethene <0.17 1.0 0.17 ug/L 02/15/23 20:27 1 Toluene <0.14 1.0 0.14 ug/L 02/15/23 20:27 1 trans- 1,2-Dichloroethene 0.563 J 1.0 0.21 ug/L 02/15/23 20:27 1 trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/15/23 20:27 1 trans- 1,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/15/23 20:27 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/15/23 20:27 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/15/23 20:27 1 Vinyl chloride <0.32 1.0 0.32 ug/L 02/15/23 20:27 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/15/23 20:27 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/15/23 20:27 1 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/15/23 20:27 1 1,4-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/15/23 20:27 1 Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/15/23 20:27 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/15/23 20:27 1 Tetrahydrofuran <0.53 1.0 0.53 ug/L 02/15/23 20:27 1 0 Eurofins Raleigh Page 51 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Method: 8260D - Volatile Organic Compounds by GUMS (Continued) Lab Sample ID: MB 752-1195/8 Client Sample ID: Method Blank Matrix: Water Prep Type: Total/NA Analysis Batch: 1195 MB MB L Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 122 53 - 136 02115123 20:27 1 Dibromofluoromethane (Surr) 107 67- 129 02115123 20:27 1 Toluene-d8 (Surr) 124 59 - 134 02115123 20:27 1 Lab Sample ID: LCS 752-1195/5 Client Sample ID: Lab Control Sample Matrix: Water Prep Type: Total/NA Analysis Batch: 1195 Spike LCS LCS %Rec Analyte Added Result Qualifier Unit D %Rec Limits 1,1,1,2-Tetrachloroethane 20.0 18.0 ug/L 90 71-120 1,1,1-Trichloroethane 20.0 19.0 ug/L 95 72-143 1,1,2,2-Tetrachloroethane 20.0 19.3 ug/L 96 59-133 1,1,2-Trichloroethane 20.0 18.3 ug/L 92 67-120 1,1-Dichloroethane 20.0 18.7 ug/L 93 79-141 1,1-Dichloroethene 20.0 18.2 ug/L 91 75-133 1,2-Dibromo-3-Chloropropane 20.0 18.8 ug/L 94 37-157 1,2-Dichlorobenzene 20.0 18.4 ug/L 92 76 -120 1,2-Dichloroethane 20.0 18.7 ug/L 94 72 -151 1,2-Dichloropropane 20.0 18.4 ug/L 92 78 -125 2-Butanone (MEK) 40.0 45.0 ug/L 113 36 -135 2-Hexanone 40.0 35.0 ug/L 88 36 -191 4-Methyl-2-pentanone (MIBK) 40.0 35.7 ug/L 89 56-166 Acetone 40.0 38.8 ug/L 97 10 -158 Acrylonitrile 60.0 53.7 ug/L 90 10 - 200 Benzene 20.0 17.9 ug/L 89 80-134 Bromoform 20.0 19.2 ug/L 96 73 -120 Bromomethane 20.0 16.6 ug/L 83 38 -189 Carbon disulfide 20.0 24.5 ug/L 122 65 -173 Carbon tetrachloride 20.0 20.0 ug/L 100 68 -142 Chlorobenzene 20.0 18.4 ug/L 92 80 -120 Chloroethane 20.0 13.9 ug/L 69 45 - 213 Chloroform 20.0 17.6 ug/L 88 78 -138 Chloromethane 20.0 18.2 ug/L 91 56 -171 cis-1,2-Dichloroethene 20.0 16.7 ug/L 84 69 -120 cis-1,3-Dichloropropene 20.0 19.4 ug/L 97 63 -125 Bromochloromethane 20.0 19.0 ug/L 95 74 -128 Dibromochloromethane 20.0 18.8 ug/L 94 73 -120 Bromodichloromethane 20.0 19.1 ug/L 96 72 -129 Ethylbenzene 20.0 17.6 ug/L 88 68 -124 lodomethane 20.0 19.9 ug/L 99 34 -140 Methylene Chloride 20.0 18.9 ug/L 95 68 -128 Styrene 20.0 17.0 ug/L 85 73 -120 Tetrachloroethene 20.0 19.9 ug/L 100 40 -181 Toluene 20.0 20.7 ug/L 103 71 -120 trans- 1,2-Dichloroethene 20.0 18.6 ug/L 93 75-139 trans- 1,3-Dichloropropene 20.0 21.2 ug/L 106 65-152 trans- 1,4-Dichloro-2-butene 20.0 22.0 ug/L 110 10-142 Trichloroethene 20.0 18.5 ug/L 93 74 -120 Eurofins Raleigh Page 52 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Method: 8260D - Volatile Organic Compounds by GUMS (Continued) Lab Sample ID: LCS 752-119515 Client Sample ID: Lab Control Sample Matrix: Water Prep Type: Total/NA Analysis Batch: 1195 Spike LCS LCS %Rec Analyte Added Result Qualifier Unit D %Rec Limits Vinyl acetate 20.0 21.4 ug/L 107 10 -198 Vinyl chloride 20.0 16.0 ug/L 80 49 -150 Xylenes, Total 60.0 55.4 ug/L 92 77 -121 Dibromomethane 20.0 19.0 ug/L 95 76 -124 1,2-Dibromoethane 20.0 20.2 ug/L 101 66-123 1,4-Dichlorobenzene 20.0 17.5 ug/L 88 76 -122 Trichlorofluoromethane 20.0 15.8 ug/L 79 68 -183 1,2,3-Trichloropropane 20.0 18.6 ug/L 93 69-127 Tetrahydrofuran 20.0 20.3 ug/L 101 0 - 200 LCS LCS Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 123 53 - 136 Dibromofluoromethane (Surr) 99 67 - 129 Toluene-d8 (Surr) 122 59 - 134 Lab Sample ID: LCSD 752-1195/6 Client Sample ID: Lab Control Sample Dup Matrix: Water Prep Type: Total/NA Analysis Batch: 1195 Spike LCSD LCSD %Rec RPD Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit 1,1,1,2-Tetrachloroethane 20.0 18.3 ug/L 92 71-120 2 16 1,1,1-Trichloroethane 20.0 19.6 ug/L 98 72-143 3 18 1,1,2,2-Tetrachloroethane 20.0 19.3 ug/L 97 59-133 0 16 1,1,2-Trichloroethane 20.0 18.4 ug/L 92 67-120 0 18 1,1-Dichloroethane 20.0 19.2 ug/L 96 79-141 3 19 1,1-Dichloroethene 20.0 19.9 ug/L 100 75-133 9 20 1,2-Dibromo-3-Chloropropane 20.0 18.6 ug/L 93 37-157 1 18 1,2-Dichlorobenzene 20.0 19.0 ug/L 95 76 -120 3 16 1,2-Dichloroethane 20.0 19.4 ug/L 97 72 -151 4 16 1,2-Dichloropropane 20.0 19.4 ug/L 97 78 -125 5 19 2-Butanone (MEK) 40.0 47.6 ug/L 119 36 -135 6 19 2-Hexanone 40.0 34.8 ug/L 87 36 -191 1 17 4-Methyl-2-pentanone (MIBK) 40.0 36.9 ug/L 92 56-166 3 19 Acetone 40.0 40.3 ug/L 101 10 -158 4 78 Acrylonitrile 60.0 55.4 ug/L 92 10 - 200 3 36 Benzene 20.0 18.7 ug/L 94 80-134 5 17 Bromoform 20.0 19.2 ug/L 96 73 -120 0 44 Bromomethane 20.0 18.2 ug/L 91 38 -189 9 27 Carbon disulfide 20.0 23.9 ug/L 120 65 -173 2 38 Carbon tetrachloride 20.0 20.1 ug/L 101 68 -142 1 17 Chlorobenzene 20.0 19.0 ug/L 95 80 -120 4 16 Chloroethane 20.0 15.6 ug/L 78 45 - 213 12 26 Chloroform 20.0 18.3 ug/L 91 78 -138 4 17 Chloromethane 20.0 19.0 ug/L 95 56 -171 4 28 cis-1,2-Dichloroethene 20.0 17.9 ug/L 89 69 -120 7 18 cis-1,3-Dichloropropene 20.0 20.2 ug/L 101 63 -125 4 17 Bromochloromethane 20.0 19.4 ug/L 97 74.128 2 18 Dibromochloromethane 20.0 18.2 ug/L 91 73 -120 3 16 0 Eurofins Raleigh Page 53 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Method: 8260D - Volatile Organic Compounds by GUMS (Continued) Lab Sample ID: LCSD 752-1195/6 Client Sample ID: Lab Control Sample Dup Matrix: Water Prep Type: Total/NA Analysis Batch: 1195 Spike LCSD LCSD %Rec RPD Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit Bromodichloromethane 20.0 20.0 ug/L 100 72 -129 4 16 Ethylbenzene 20.0 18.5 ug/L 93 68 -124 5 16 lodomethane 20.0 19.9 ug/L 100 34 -140 0 15 Methylene Chloride 20.0 19.3 ug/L 97 68 -128 2 17 Styrene 20.0 17.9 ug/L 90 73 -120 5 23 Tetrachloroethene 20.0 19.5 ug/L 98 40 -181 2 26 Toluene 20.0 20.8 ug/L 104 71 -120 1 17 trans- 1,2-Dichloroethene 20.0 18.6 ug/L 93 75-139 0 19 trans- 1,3-Dichloropropene 20.0 22.2 ug/L 111 65-152 4 16 trans- 1,4-Dichloro-2-butene 20.0 21.7 ug/L 108 10-142 2 28 Trichloroethene 20.0 18.9 ug/L 95 74 -120 2 22 Vinyl acetate 20.0 22.8 ug/L 114 10 -198 6 21 Vinyl chloride 20.0 16.5 ug/L 83 49 -150 3 27 Xylenes, Total 60.0 57.6 ug/L 96 77 -121 4 16 Dibromomethane 20.0 20.0 ug/L 100 76 -124 5 15 1,2-Dibromoethane 20.0 19.5 ug/L 98 66-123 3 15 1,4-Dichlorobenzene 20.0 18.9 ug/L 95 76 -122 8 16 Trichlorofluoromethane 20.0 18.2 ug/L 91 68 -183 14 22 1,2,3-Trichloropropane 20.0 19.1 ug/L 96 69-127 3 17 Tetrahydrofuran 20.0 20.1 ug/L 100 0 - 200 1 50 LCSD LCSD Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 117 53 - 136 Dibromofluoromethane (Surr) 97 67 - 129 LToluene-d8 (Surr) 120 59 - 134 Lab Sample ID: MRL 752-119514 Client Sample ID: Lab Control Sample Matrix: Water Prep Type: Total/NA Analysis Batch: 1195 Spike MRL MRL %Rec Analyte Added Result Qualifier Unit D %Rec Limits 1,1,1,2-Tetrachloroethane 1.00 1.21 ug/L 121 1,1,1-Trichloroethane 1.00 0.963 J ug/L 96 1,1,2,2-Tetrachloroethane 1.00 1.24 ug/L 124 1,1,2-Trichloroethane 1.00 1.11 ug/L ill 1,1-Dichloroethane 1.00 1.06 ug/L 106 1,1-Dichloroethene 1.00 1.70 ug/L 170 1,2-Dibromo-3-Chloropropane 1.00 0.965 J ug/L 96 1,2-Dichlorobenzene 1.00 1.60 ug/L 160 1,2-Dichloroethane 1.00 1.36 ug/L 136 1,2-Dichloropropane 1.00 1.27 ug/L 127 2-Butanone (MEK) 2.00 17.4 J ug/L 871 2-Hexanone 2.00 4.76 J ug/L 238 4-Methyl-2-pentanone (MIBK) 2.00 4.51 J ug/L 225 Acetone 2.00 10.5 J ug/L 524 Acrylonitrile 5.00 6.08 J ug/L 122 Benzene 1.00 1.09 ug/L 109 Bromoform 1.00 0.914 J ug/L 91 Eurofins Raleigh Page 54 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Project/Site: High Point Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: MRL 752-1195/4 Matrix: Water Analysis Batch: 1195 Job ID: 752-1612-1 Client Sample ID: Lab Control Sample Prep Type: Total/NA Spike MRL MRL %Rec Analyte Added Result Qualifier Unit D %Rec Limits Bromomethane 1.00 1.51 ug/L 151 Carbon disulfide 2.00 13.5 ug/L 676 Carbon tetrachloride 1.00 1.05 ug/L 105 Chlorobenzene 1.00 1.46 ug/L 146 Chloroethane 1.00 1.41 ug/L 141 Chloroform 1.00 0.849 J ug/L 85 Chloromethane 1.00 2.49 ug/L 249 cis-1,2-Dichloroethene 1.00 1.72 ug/L 172 cis-1,3-Dichloropropene 1.00 1.28 ug/L 128 Bromochloromethane 1.00 1.73 ug/L 173 Dibromochloromethane 1.00 1.20 ug/L 120 Bromodichloromethane 1.00 1.15 ug/L 115 Ethylbenzene 1.00 1.14 ug/L 114 lodomethane 2.00 3.46 J ug/L 173 Methylene Chloride 1.00 2.14 ug/L 214 Styrene 1.00 1.55 ug/L 155 Tetrachloroethene 1.00 1.45 ug/L 145 Toluene 1.00 1.61 ug/L 161 trans- 1,2-Dichloroethene 1.00 3.80 ug/L 380 trans- 1,3-Dichloropropene 1.00 1.68 ug/L 168 trans- 1,4-Dichloro-2-butene 1.00 1.21 ug/L 121 Trichloroethene 1.00 1.85 ug/L 185 Vinyl acetate 2.00 4.67 J ug/L 233 Vinyl chloride 1.00 2.67 ug/L 267 Xylenes, Total 3.00 3.28 ug/L 109 Dibromomethane 1.00 1.70 ug/L 170 1,2-Dibromoethane 1.00 1.34 ug/L 134 1,4-Dichlorobenzene 1.00 1.74 ug/L 174 Trichlorofluoromethane 1.00 0.819 J ug/L 82 1,2,3-Trichloropropane 1.00 1.28 ug/L 128 Tetrahydrofuran 1.00 1.53 ug/L 153 MRL MRL Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 289 53 - 136 Dibromofluoromethane (Surr) 222 67- 129 Toluene-d8 (Surr) 285 59 - 134 Lab Sample ID: MB 752-879/6 Matrix: Water Analysis Batch: 879 MB MB Analyte Result Qualifier 1,1,1,2-Tetrachloroethane <0.17 1,1,1-Trichloroethane <0.12 1,1,2,2-Tetrachloroethane <0.28 1,1,2-Trichloroethane <0.14 1,1-Dichloroethane <0.13 1,1-Dichloroethene <0.21 Client Sample ID: Method Blank Prep Type: Total/NA RL MDL Unit D Prepared Analyzed Dil Fac 1.0 0.17 ug/L 02/02/23 20:59 1 1.0 0.12 ug/L 02/02/23 20:59 1 1.0 0.28 ug/L 02/02/23 20:59 1 1.0 0.14 ug/L 02/02/23 20:59 1 1.0 0.13 ug/L 02/02/23 20:59 1 1.0 0.21 ug/L 02/02/23 20:59 1 0 Eurofins Raleigh Page 55 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 Method: 8260D - Volatile Organic Compounds by GUMS (Continued) Lab Sample ID: MB 752-879/6 Client Sample ID: Method Blank Matrix: Water Prep Type: Total/NA Analysis Batch: 879 MB MB Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,2-Dibromo-3-Chloropropane <0.48 1.0 0.48 ug/L 02/02/23 20:59 1 1,2-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/02/23 20:59 1 1,2-Dichloroethane <0.21 1.0 0.21 ug/L 02/02/23 20:59 1 1,2-Dichloropropane <0.10 1.0 0.10 ug/L 02/02/23 20:59 1 2-Butanone (MEK) 10.8 J 20 10 ug/L 02/02/23 20:59 1 2-Hexanone <0.88 5.0 0.88 ug/L 02/02/23 20:59 1 4-Methyl-2-pentanone (MIBK) <1.1 5.0 1.1 ug/L 02/02/23 20:59 1 Acetone <10 20 10 ug/L 02/02/23 20:59 1 Acrylonitrile <3.5 10 3.5 ug/L 02/02/23 20:59 1 Benzene <0.15 1.0 0.15 ug/L 02/02/23 20:59 1 Bromoform <0.22 1.0 0.22 ug/L 02/02/23 20:59 1 Bromomethane <0.14 1.0 0.14 ug/L 02/02/23 20:59 1 Carbon disulfide <1.5 5.0 1.5 ug/L 02/02/23 20:59 1 Carbon tetrachloride <0.17 1.0 0.17 ug/L 02/02/23 20:59 1 Chlorobenzene <0.17 1.0 0.17 ug/L 02/02/23 20:59 1 Chloroethane <0.23 1.0 0.23 ug/L 02/02/23 20:59 1 Chloroform <0.18 1.0 0.18 ug/L 02/02/23 20:59 1 Chloromethane <0.13 1.0 0.13 ug/L 02/02/23 20:59 1 cis-1,2-Dichloroethene 0.194 J 1.0 0.15 ug/L 02/02/23 20:59 1 cis-1,3-Dichloropropene <0.20 1.0 0.20 ug/L 02/02/23 20:59 1 Bromochloromethane <0.48 1.0 0.48 ug/L 02/02/23 20:59 1 Dibromochloromethane <0.17 1.0 0.17 ug/L 02/02/23 20:59 1 Bromodichloromethane <0.17 1.0 0.17 ug/L 02/02/23 20:59 1 Ethylbenzene <0.13 1.0 0.13 ug/L 02/02/23 20:59 1 lodomethane <1.7 5.0 1.7 ug/L 02/02/23 20:59 1 Methylene Chloride <0.23 1.0 0.23 ug/L 02/02/23 20:59 1 Styrene <0.11 1.0 0.11 ug/L 02/02/23 20:59 1 Tetrachloroethene <0.17 1.0 0.17 ug/L 02/02/23 20:59 1 Toluene <0.14 1.0 0.14 ug/L 02/02/23 20:59 1 trans- 1,2-Dichloroethene 0.506 J 1.0 0.21 ug/L 02/02/23 20:59 1 trans- 1,3-Dichloropropene <0.15 1.0 0.15 ug/L 02/02/23 20:59 1 trans- l,4-Dichloro-2-butene <0.70 1.0 0.70 ug/L 02/02/23 20:59 1 Trichloroethene <0.15 1.0 0.15 ug/L 02/02/23 20:59 1 Vinyl acetate <0.95 5.0 0.95 ug/L 02/02/23 20:59 1 Vinyl chloride <0.32 1.0 0.32 ug/L 02/02/23 20:59 1 Xylenes, Total <0.45 3.0 0.45 ug/L 02/02/23 20:59 1 Dibromomethane <0.27 1.0 0.27 ug/L 02/02/23 20:59 1 1,2-Dibromoethane <0.66 1.0 0.66 ug/L 02/02/23 20:59 1 1,4-Dichlorobenzene <0.19 1.0 0.19 ug/L 02/02/23 20:59 1 Trichlorofluoromethane <0.24 1.0 0.24 ug/L 02/02/23 20:59 1 1,2,3-Trichloropropane <0.49 1.0 0.49 ug/L 02/02/23 20:59 1 Tetrahydrofuran <0.53 1.0 0.53 ug/L 02/02/23 20:59 1 MB MB Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 107 53 - 136 02102123 20:59 1 Dibromofluoromethane (Surr) 102 67- 129 02102123 20:59 1 Toluene-d8 (Surr) 106 59 - 134 02102123 20:59 1 Eurofins Raleigh Page 56 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Method: 8260D - Volatile Organic Compounds by GUMS (Continued) Lab Sample ID: LCS 752-879/3 Client Sample ID: Lab Control Sample Matrix: Water Prep Type: Total/NA Analysis Batch: 879 Spike LCS LCS %Rec Analyte Added Result Qualifier Unit D %Rec Limits 1,1,1,2-Tetrachloroethane 20.0 15.0 ug/L 75 71-120 1,1,1-Trichloroethane 20.0 15.8 ug/L 79 72-143 1,1,2,2-Tetrachloroethane 20.0 17.3 ug/L 86 59-133 1,1,2-Trichloroethane 20.0 15.1 ug/L 76 67-120 1,1-Dichloroethane 20.0 16.3 ug/L 81 79-141 1,1-Dichloroethene 20.0 17.7 ug/L 88 75-133 1,2-Dibromo-3-Chloropropane 20.0 18.0 ug/L 90 37-157 1,2-Dichlorobenzene 20.0 15.9 ug/L 79 76 -120 1,2-Dichloroethane 20.0 15.7 ug/L 78 72 -151 1,2-Dichloropropane 20.0 15.0 *- ug/L 75 78 -125 2-Butanone (MEK) 40.0 58.3 *+ ug/L 146 36 -135 2-Hexanone 40.0 39.2 ug/L 98 36 -191 4-Methyl-2-pentanone (MIBK) 40.0 43.4 ug/L 109 56-166 Acetone 40.0 54.1 ug/L 135 10 -158 Acrylonitrile 60.0 64.4 ug/L 107 10 - 200 Benzene 20.0 15.5 *- ug/L 78 80 -134 Bromoform 20.0 16.9 ug/L 85 73 -120 Bromomethane 20.0 16.2 ug/L 81 38 -189 Carbon disulfide 20.0 20.1 ug/L 101 65 -173 Carbon tetrachloride 20.0 16.4 ug/L 82 68 -142 Chlorobenzene 20.0 15.2 *- ug/L 76 80 -120 Chloroethane 20.0 13.6 ug/L 68 45 - 213 Chloroform 20.0 15.4 *- ug/L 77 78 -138 Chloromethane 20.0 16.4 ug/L 82 56 -171 cis-1,2-Dichloroethene 20.0 15.8 ug/L 79 69 -120 cis-1,3-Dichloropropene 20.0 16.1 ug/L 81 63 -125 Bromochloromethane 20.0 15.6 ug/L 78 74 -128 Dibromochloromethane 20.0 15.6 ug/L 78 73 -120 Bromodichloromethane 20.0 15.8 ug/L 79 72 -129 Ethylbenzene 20.0 14.8 ug/L 74 68 -124 lodomethane 20.0 15.4 ug/L 77 34 -140 Methylene Chloride 20.0 16.9 ug/L 84 68 -128 Styrene 20.0 13.1 *- ug/L 66 73 -120 Tetrachloroethene 20.0 15.6 ug/L 78 40 -181 Toluene 20.0 16.7 ug/L 83 71 -120 trans- 1,2-Dichloroethene 20.0 16.0 ug/L 80 75-139 trans- 1,3-Dichloropropene 20.0 17.7 ug/L 89 65-152 trans- 1,4-Dichloro-2-butene 20.0 19.6 ug/L 98 10-142 Trichloroethene 20.0 15.1 ug/L 76 74 -120 Vinyl acetate 20.0 22.6 ug/L 113 10 -198 Vinyl chloride 20.0 16.1 ug/L 80 49 -150 Xylenes, Total 60.0 46.1 ug/L 77 77 -121 Dibromomethane 20.0 15.9 ug/L 79 76 -124 1,2-Dibromoethane 20.0 16.4 ug/L 82 66-123 1,4-Dichlorobenzene 20.0 15.0 *- ug/L 75 76 -122 Trichlorofluoromethane 20.0 15.2 ug/L 76 68 -183 1,2,3-Trichloropropane 20.0 16.9 ug/L 84 69-127 Tetrahydrofuran 20.0 24.2 ug/L 121 0 - 200 0 Eurofins Raleigh Page 57 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Method: 8260D - Volatile Organic Compounds by GUMS (Continued) Lab Sample ID: LCS 752-879/3 Client Sample ID: Lab Control Sample Matrix: Water Prep Type: Total/NA Analysis Batch: 879 LCS LCS L Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 108 53 - 136 Dibromofluoromethane (Surr) 100 67- 129 Toluene-d8 (Surr) 108 59 - 134 Lab Sample ID: LCSD 752-879/4 Client Sample ID: Lab Control Sample Dup Matrix: Water Prep Type: Total/NA Analysis Batch: 879 Spike LCSD LCSD %Rec RPD Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit 1,1,1,2-Tetrachloroethane 20.0 15.1 ug/L 76 71-120 1 16 1,1,1-Trichloroethane 20.0 15.9 ug/L 80 72-143 1 18 1,1,2,2-Tetrachloroethane 20.0 17.1 ug/L 86 59-133 1 16 1,1,2-Trichloroethane 20.0 16.3 ug/L 81 67-120 7 18 1,1-Dichloroethane 20.0 16.6 ug/L 83 79-141 2 19 1,1-Dichloroethene 20.0 17.6 ug/L 88 75-133 0 20 1,2-Dibromo-3-Chloropropane 20.0 18.5 ug/L 92 37-157 3 18 1,2-Dichlorobenzene 20.0 16.0 ug/L 80 76 -120 1 16 1,2-Dichloroethane 20.0 15.8 ug/L 79 72 -151 1 16 1,2-Dichloropropane 20.0 15.1 "- ug/L 75 78 -125 0 19 2-Butanone (MEK) 40.0 56.8 .+ ug/L 142 36 -135 3 19 2-Hexanone 40.0 39.9 ug/L 100 36 -191 2 17 4-Methyl-2-pentanone (MIBK) 40.0 44.2 ug/L 110 56-166 2 19 Acetone 40.0 45.3 ug/L 113 10 -158 18 78 Acrylonitrile 60.0 65.8 ug/L 110 10 - 200 2 36 Benzene 20.0 15.5 ug/L 78 80 -134 0 17 Bromoform 20.0 16.8 ug/L 84 73 -120 1 44 Bromomethane 20.0 16.6 ug/L 83 38 -189 2 27 Carbon disulfide 20.0 19.0 ug/L 95 65 -173 6 38 Carbon tetrachloride 20.0 16.0 ug/L 80 68 -142 2 17 Chlorobenzene 20.0 15.7 *- ug/L 79 80 -120 3 16 Chloroethane 20.0 13.2 ug/L 66 45 - 213 3 26 Chloroform 20.0 15.5- ug/L 77 78 -138 1 17 Chloromethane 20.0 16.9 ug/L 84 56 -171 3 28 cis-1,2-Dichloroethene 20.0 15.8 ug/L 79 69 -120 0 18 cis-1,3-Dichloropropene 20.0 16.3 ug/L 82 63 -125 1 17 Bromochloromethane 20.0 16.5 ug/L 82 74 -128 5 18 Dibromochloromethane 20.0 16.0 ug/L 80 73 -120 2 16 Bromodichloromethane 20.0 16.2 ug/L 81 72 -129 3 16 Ethylbenzene 20.0 15.4 ug/L 77 68 -124 4 16 lodomethane 20.0 17.3 ug/L 87 34 -140 12 15 Methylene Chloride 20.0 17.4 ug/L 87 68 -128 3 17 Styrene 20.0 13.4 "- ug/L 67 73 -120 2 23 Tetrachloroethene 20.0 16.5 ug/L 82 40 -181 6 26 Toluene 20.0 16.9 ug/L 84 71 -120 1 17 trans- 1,2-Dichloroethene 20.0 16.1 ug/L 81 75-139 0 19 trans- 1,3-Dichloropropene 20.0 18.8 ug/L 94 65-152 6 16 trans- 1,4-Dichloro-2-butene 20.0 19.3 ug/L 96 10-142 2 28 Trichloroethene 20.0 15.6 ug/L 78 74 -120 3 22 Eurofins Raleigh Page 58 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Method: 8260D - Volatile Organic Compounds by GUMS (Continued) Lab Sample ID: LCSD 752-87914 Client Sample ID: Lab Control Sample Dup Matrix: Water Prep Type: Total/NA Analysis Batch: 879 Spike LCSD LCSD %Rec RPD Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit Vinyl acetate 20.0 23.6 ug/L 118 10 -198 4 21 Vinyl chloride 20.0 16.0 ug/L 80 49 -150 0 27 Xylenes, Total 60.0 48.0 ug/L 80 77 -121 4 16 Dibromomethane 20.0 16.4 ug/L 82 76 -124 3 15 1,2-Dibromoethane 20.0 16.7 ug/L 84 66-123 2 15 1,4-Dichlorobenzene 20.0 15.4 ug/L 77 76 -122 2 16 Trichlorofluoromethane 20.0 14.9 ug/L 74 68 -183 2 22 1,2,3-Trichloropropane 20.0 17.0 ug/L 85 69-127 1 17 Tetrahydrofuran 20.0 22.0 ug/L 110 0 - 200 10 50 LCSD LCSD Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 107 53 - 136 Dibromofluoromethane (Surr) 100 67 - 129 Toluene-d8 (Surr) 107 59 - 134 Lab Sample ID: MRL 752-879/2 Client Sample ID: Lab Control Sample C Matrix: Water Prep Type: Total/NA Analysis Batch: 879 Spike MRL MRL %Rec Analyte Added Result Qualifier Unit D %Rec Limits 1,1,1,2-Tetrachloroethane 1.00 0.926 J ug/L 93 1,1,1-Trichloroethane 1.00 0.807 J ug/L 81 1,1,2,2-Tetrachloroethane 1.00 1.07 ug/L 107 1,1,2-Trichloroethane 1.00 1.12 ug/L 112 1,1-Dichloroethane 1.00 0.945 J ug/L 95 1,1-Dichloroethene 1.00 1.60 ug/L 160 1,2-Dibromo-3-Chloropropane 1.00 1.12 ug/L 112 1,2-Dichlorobenzene 1.00 1.32 ug/L 132 1,2-Dichloroethane 1.00 1.17 ug/L 117 1,2-Dichloropropane 1.00 1.01 ug/L 101 2-Butanone (MEK) 2.00 10.2 J ug/L 508 2-Hexanone 2.00 5.04 ug/L 252 4-Methyl-2-pentanone (MIBK) 2.00 2.29 J ug/L 115 Acetone 2.00 <10 ug/L 444 Acrylonitrile 5.00 7.74 J ug/L 155 Benzene 1.00 1.03 ug/L 103 Bromoform 1.00 1.03 ug/L 103 Bromomethane 1.00 1.33 ug/L 133 Carbon disulfide 2.00 11.1 ug/L 556 Carbon tetrachloride 1.00 0.761 J ug/L 76 Chlorobenzene 1.00 1.26 ug/L 126 Chloroethane 1.00 1.31 ug/L 131 Chloroform 1.00 1.05 ug/L 105 Chloromethane 1.00 1.11 ug/L ill cis-1,2-Dichloroethene 1.00 1.64 ug/L 164 cis-1,3-Dichloropropene 1.00 1.23 ug/L 123 Bromochloromethane 1.00 1.60 ug/L 160 Dibromochloromethane 1.00 0.988 J ug/L 99 Eurofins Raleigh Page 59 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Project/Site: High Point F Job ID: 752-1612-1 Method: 8260D - Volatile Organic Compounds by GUMS (Continued) Lab Sample ID: MRL 752-879/2 Client Sample ID: Lab Control Sample Matrix: Water Prep Type: Total/NA Analysis Batch: 879 Spike MRL MRL %Rec Analyte Added Result Qualifier Unit D %Rec Limits Bromodichloromethane 1.00 0.912 J ug/L 91 Ethylbenzene 1.00 1.03 ug/L 103 lodomethane 2.00 3.20 J ug/L 160 Methylene Chloride 1.00 1.69 ug/L 169 Styrene 1.00 1.53 ug/L 153 Tetrachloroethene 1.00 1.18 ug/L 118 Toluene 1.00 1.27 ug/L 127 trans- 1,2-Dichloroethene 1.00 3.35 ug/L 335 trans- 1,3-Dichloropropene 1.00 1.25 ug/L 125 trans- 1,4-Dichloro-2-butene 1.00 1.13 ug/L 113 Trichloroethene 1.00 1.62 ug/L 162 Vinyl acetate 2.00 3.66 J ug/L 183 Vinyl chloride 1.00 2.89 ug/L 289 Xylenes, Total 3.00 2.79 J ug/L 93 Dibromomethane 1.00 1.48 ug/L 148 1,2-Dibromoethane 1.00 1.11 ug/L ill 1,4-Dichlorobenzene 1.00 1.60 ug/L 160 Trichlorofluoromethane 1.00 0.718 J ug/L 72 1,2,3-Trichloropropane 1.00 4.16 ug/L 416 Tetrahydrofuran 1.00 1.59 ug/L 159 MRL MRL Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 107 53 -136 Dibromofluoromethane (Surr) 103 67-129 Toluene-d8 (Surr) 107 59 -134 Method: 8260D SIM 14D - Volatile Organic Compounds (GC/MS) Lab Sample ID: MB 680-761663/5 Client Sample ID: Method Blank Matrix: Water Prep Type: Total/NA Analysis Batch: 761663 MB MB Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,4-Dioxane <0.32 0.50 0.32 ug/L 02/02/2311:35 1 MB MB Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac 4-Bromofluorobenzene (Surr) 102 70 - 130 02102123 11:35 1 Lab Sample ID: LCS 680-761663/3 Client Sample ID: Lab Control Sample Matrix: Water Prep Type: Total/NA Analysis Batch: 761663 Spike LCS LCS %Rec Analyte Added Result Qualifier Unit D %Rec Limits 1,4-Dioxane 10.0 10.2 ug/L 102 70 -130 LCS LCS Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 116 70 - 130 0 Page 60 of 98 Eurofins Raleigh 2/21 /2023 QC Sample Results Client: WSP USA Inc Project/Site: High Point F Job ID: 752-1612-1 Method: 8260D SIM 14D - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: MB 680-761808/5 Client Sample ID: Method Blank Matrix: Water Prep Type: Total/NA Analysis Batch: 761808 MB MB Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 1,4-Dioxane <0.32 0.50 0.32 ug/L 02/03/2311:33 1 MB MB Surrogate %Recovery Qualifier Limits Prepared Analyzed DU Fac 4-Bromofluorobenzene (Surr) 82 70 - 130 02/03/23 11:33 1 • Lab Sample ID: LCS 680-761808/3 Client Sample ID: Lab Control Sample Matrix: Water Prep Type: Total/NA Analysis Batch: 761808 Spike LCS LCS %Rec Analyte Added Result Qualifier Unit D %Rec Limits 1,4-Dioxane 10.0 9.39 ug/L 94 70-130 LCS LCS Surrogate %Recovery Qualifier Limits 4-Bromofluorobenzene (Surr) 89 70 -130 Method: 300.0 - Anions. Ion Chromatoaraohv FLab Sample ID: MB 680-763712/33 Matrix: Water Analysis Batch: 763712 Client Sample ID: Method Blank Prep Type: Total/NA MB MB Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Chloride <0.20 0.50 0.20 mg/L 02/16/2317:34 1 Sulfate <0.40 1.0 0.40 mg/L 02/16/2317:34 1 Lab Sample ID: LCS 680-763712/34 Client Sample ID: Lab Control Sample Matrix: Water Prep Type: Total/NA Analysis Batch: 763712 Spike LCS LCS %Rec Analyte Added Result Qualifier Unit D %Rec Limits Chloride 10.0 10.5 mg/L 105 90-110 Sulfate 10.0 10.1 mg/L 101 90 -110 Lab Sample ID: LCSD 680-763712/35 Client Sample ID: Lab Control Sample Dup Matrix: Water Prep Type: Total/NA Analysis Batch: 763712 Spike LCSD LCSD %Rec RPD Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit Chloride 10.0 10.6 mg/L 106 90-110 0 15 Sulfate 10.0 10.2 mg/L 102 90 -110 1 15 Lab Sample ID: 752-1612-6 MS Client Sample ID: 4116-AMW1 Matrix: Water Prep Type: Total/NA Analysis Batch: 763712 Sample Sample Spike MS MS %Rec Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits Chloride 72 10.0 81.9 4 mg/L 94 80-120 Sulfate 46 10.0 56.2 4 mg/L 101 80 -120 Eurofins Raleigh Page 61 of 98 2/21 /2023 QC Sample Results Client: WSP USA Inc Project/Site: High Point Method: 300.0 - Anions, Ion Chromatography (Continued) Lab Sample ID: 752-1612-6 MSD Matrix: Water Analysis Batch: 763712 F Job ID: 752-1612-1 Client Sample ID: 4116-AMW1 Prep Type: Total/NA Sample Sample Spike MSD MSD %Rec RPD Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit Chloride 72 10.0 81.8 4 mg/L 94 80 -120 0 15 Sulfate 46 10.0 56.0 4 mg/L 99 80 -120 0 15 Lab Sample ID: MB 752-885/21 Client Sample ID: Method Blank Matrix: Water Prep Type: Total/NA Analysis Batch: 885 MB MB Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Chloride <2.2 5.0 2.2 mg/L 02/02/2316:48 1 Sulfate <2.9 5.0 2.9 mg/L 02/02/2316:48 1 Lab Sample ID: MB 752-885/4 Client Sample ID: Method Blank Matrix: Water Prep Type: Total/NA Analysis Batch: 885 MB MB Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Chloride <2.2 5.0 2.2 mg/L 02/02/2312:42 1 Sulfate <2.9 5.0 2.9 mg/L 02/02/2312:42 1 Lab Sample ID: LCS 752-885/22 Client Sample ID: Lab Control Sample Matrix: Water Prep Type: Total/NA Analysis Batch: 885 Spike LCS LCS %Rec Analyte Added Result Qualifier Unit D %Rec Limits Chloride 50.0 47.4 mg/L 95 90 -110 Sulfate 50.0 48.1 mg/L 96 90 -110 Lab Sample ID: MRL 752-885/3 Client Sample ID: Lab Control Sample Matrix: Water Prep Type: Total/NA Analysis Batch: 885 Spike MRL MRL %Rec Analyte Added Result Qualifier Unit D %Rec Limits Chloride 5.00 5.01 mg/L 100 Sulfate 5.00 5.60 mg/L 112 Method: 6010D - Metals (ICP) Lab Sample ID: 752-1612-1 MS Client Sample ID: 4116-MW1 Matrix: Water Prep Type: Total Recoverable Analysis Batch: 760952 Prep Batch: 760798 Sample Sample Spike MS MS %Rec Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits Arsenic <6.4 100 83.9 ug/L 84 75 -125 Barium 33 100 120 ug/L 87 75-125 Beryllium <0.30 50.0 43.8 ug/L 88 75 -125 Cadmium <0.44 50.0 42.1 ug/L 84 75 -125 Chromium <1.1 100 88.3 ug/L 88 75 -125 Cobalt <1.4 50.0 43.1 ug/L 86 75 -125 Copper <3.2 100 98.0 ug/L 98 75 -125 Selenium <10 100 84.3 ug/L 84 75 -125 Eurofins Raleigh Page 62 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Method: 6010D - Metals (ICP) (Continued) Lab Sample ID: 752-1612-1 MS Client Sample ID: 4116-MW1 Matrix: Water Prep Type: Total Recoverable Analysis Batch: 760952 Prep Batch: 760798 Sample Sample Spike MS MS %Rec Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits Lead <6.6 505 415 ug/L 82 75-125 Nickel 3.7 J 100 92.0 ug/L 88 75 -125 Silver <1.5 50.0 43.0 ug/L 86 75 -125 Vanadium 1.6 J 100 90.1 ug/L 89 75 -125 Zinc <8.7 100 88.8 ug/L 89 75 -125 Iron <20 5000 4480 ug/L 90 75 -125 Manganese 4.7 J 400 363 ug/L 89 75 -125 Lab Sample ID: 752-1612-1 MSD Client Sample ID: 4116-MW1 Matrix: Water Prep Type: Total Recoverable Analysis Batch: 760952 Prep Batch: 760798 Sample Sample Spike MSD MSD %Rec RPD Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit Arsenic <6.4 100 81.4 ug/L 81 75 -125 3 20 Barium 33 100 120 ug/L 87 75-125 0 20 Beryllium <0.30 50.0 43.7 ug/L 87 75 -125 0 20 Cadmium <0.44 50.0 41.9 ug/L 84 75 -125 0 20 Chromium <1.1 100 88.3 ug/L 88 75 -125 0 20 Cobalt <1.4 50.0 42.8 ug/L 86 75 -125 1 20 Copper <3.2 100 93.0 ug/L 93 75 -125 5 20 Selenium <10 100 80.8 ug/L 81 75 -125 4 20 Lead <6.6 505 410 ug/L 81 75-125 1 20 Nickel 3.7 J 100 91.7 ug/L 88 75 -125 0 20 Silver <1.5 50.0 42.5 ug/L 85 75 -125 1 20 Vanadium 1.6 J 100 91.9 ug/L 90 75 -125 2 20 Zinc <8.7 100 88.7 ug/L 89 75 -125 0 20 Iron <20 5000 4520 ug/L 90 75 -125 1 20 Manganese 4.7 J 400 361 ug/L 89 75 -125 0 20 Lab Sample ID: MB 680-761890/1-A Client Sample ID: Method Blank Matrix: Water Prep Type: Total Recoverable Analysis Batch: 762150 Prep Batch: 761890 MB MB Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Arsenic <6.4 20 6.4 ug/L 02/03/2312:17 02/06/2312:15 1 Barium <4.4 10 4.4 ug/L 02/03/2312:17 02/06/2312:15 1 Beryllium <0.30 4.0 0.30 ug/L 02/03/2312:17 02/06/2312:15 1 Cadmium <0.44 5.0 0.44 ug/L 02/03/2312:17 02/06/2312:15 1 Chromium <1.1 10 1.1 ug/L 02/03/2312:17 02/06/2312:15 1 Cobalt <1.4 10 1.4 ug/L 02/03/2312:17 02/06/2312:15 1 Copper <3.2 20 3.2 ug/L 02/03/2312:17 02/06/2312:15 1 Selenium <10 20 10 ug/L 02/03/2312:17 02/06/2312:15 1 Lead <6.6 10 6.6 ug/L 02/03/2312:17 02/06/2312:15 1 Nickel <3.3 40 3.3 ug/L 02/03/2312:17 02/06/2312:15 1 Silver <1.5 10 1.5 ug/L 02/03/2312:17 02/06/2312:15 1 Vanadium <1.0 10 1.0 ug/L 02/03/2312:17 02/06/2312:15 1 Zinc <8.7 20 8.7 ug/L 02/03/2312:17 02/06/2312:15 1 Iron <20 100 20 ug/L 02/03/2312:17 02/06/2312:15 1 Manganese <1.3 10 1.3 ug/L 02/03/2312:17 02/06/2312:15 1 Eurofins Raleigh Page 63 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Project/Site: High Point Method: 6010D - Metals (ICP) (Continued) Lab Sample ID: LCS 680-761890/2-A Matrix: Water Analysis Batch: 762150 Analyte Spike Added LCS LCS Result Qualifier Arsenic 100 98.6 Barium 100 102 Beryllium 50.0 48.3 Cadmium 50.0 48.8 Chromium 100 103 Cobalt 50.0 49.3 Copper 100 104 Selenium 100 91.8 Lead 505 498 Nickel 100 101 Silver 50.0 49.6 Vanadium 100 101 Zinc 100 97.9 Iron 5000 5010 Manganese 400 405 Lab Sample ID: 752-1993-1 MS Matrix: Water Analysis Batch: 762150 Job ID: 752-1612-1 Client Sample ID: Lab Control Sample Prep Type: Total Recoverable Prep Batch: 761890 %Rec Unit D %Rec Limits ug/L 99 80-120 ug/L 102 80-120 ug/L 97 80-120 ug/L 98 80-120 ug/L 103 80-120 ug/L 99 80-120 ug/L 104 80-120 ug/L 92 80-120 ug/L 99 80-120 ug/L 101 80-120 ug/L 99 80-120 ug/L 101 80-120 ug/L 98 80-120 ug/L 100 80-120 ug/L 101 80-120 Analyte Sample Result Sample Qualifier Spike Added MS MS Result Qualifier Unit Arsenic <6.4 100 95.2 ug/L Barium 61 100 159 ug/L Beryllium <0.30 50.0 47.9 ug/L Cadmium 2.5 J 50.0 49.8 ug/L Chromium 4.4 J 100 104 ug/L Cobalt 2.3 J 50.0 50.3 ug/L Copper 8.9 J 100 110 ug/L Selenium <10 100 93.0 ug/L Lead <6.6 505 484 ug/L Nickel 4.6 J 100 102 ug/L Silver <1.5 50.0 48.5 ug/L Vanadium 11 100 109 ug/L Zinc <8.7 100 99.1 ug/L Iron 3600 5000 8490 ug/L Manganese 390 400 778 ug/L Lab Sample ID: 752-1993-1 MSD Matrix: Water Analysis Batch: 762150 Analyte Sample Result Sample Qualifier Spike Added MSD MSD Result Qualifier Unit Arsenic <6.4 100 99.9 ug/L Barium 61 100 164 ug/L Beryllium <0.30 50.0 48.7 ug/L Cadmium 2.5 J 50.0 51.4 ug/L Chromium 4.4 J 100 107 ug/L Cobalt 2.3 J 50.0 51.6 ug/L Copper 8.9 J 100 113 ug/L Client Sample ID: 4116-1133 Prep Type: Total Recoverable Prep Batch: 761890 %Rec D %Rec Limits 95 75-125 98 75-125 96 75-125 95 75-125 100 75-125 96 75-125 101 75-125 93 75-125 96 75-125 97 75-125 97 75-125 98 75-125 99 75-125 99 75-125 96 75-125 Client Sample ID: 4116-1133 Prep Type: Total Recoverable Prep Batch: 761890 %Rec RPD D %Rec Limits RPD Limit 100 75-125 5 20 103 75-125 3 20 97 75-125 2 20 98 75-125 3 20 102 75-125 3 20 99 75-125 3 20 104 75-125 3 20 0 Eurofins Raleigh Page 64 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Method: 6010D - Metals (ICP) (Continued) Lab Sample ID: 752-1993-1 MSD Client Sample ID: 4116-P3 Matrix: Water Prep Type: Total Recoverable Analysis Batch: 762150 Prep Batch: 761890 Sample Sample Spike MSD MSD %Rec RPD Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit Selenium <10 100 94.3 ug/L 94 75 -125 1 20 Lead <6.6 505 498 ug/L 99 75-125 3 20 Nickel 4.6 J 100 104 ug/L 100 75 -125 2 20 Silver <1.5 50.0 49.4 ug/L 99 75 -125 2 20 Vanadium 11 100 112 ug/L 100 75 -125 2 20 Zinc <8.7 100 103 ug/L 103 75 -125 4 20 Iron 3600 5000 8700 ug/L 103 75-125 2 20 Manganese 390 400 806 ug/L 103 75-125 4 20 Method: 6020B - Metals (ICP/MS) Lab Sample ID: MB 680-760799/1-A Client Sample ID: Method Blank Matrix: Water Prep Type: Total Recoverable Analysis Batch: 761081 Prep Batch: 760799 MB MB Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony 0.355 J 5.0 0.34 ug/L 01/27/23 06:03 01/27/23 16:08 1 Thallium <0.26 1.0 0.26 ug/L 01/27/23 06:03 01/27/23 16:08 1 Lab Sample ID: LCS 680-760799/2-A Client Sample ID: Lab Control Sample Matrix: Water Prep Type: Total Recoverable Analysis Batch: 761081 Prep Batch: 760799 Spike LCS LCS %Rec Analyte Added Result Qualifier Unit D %Rec Limits Antimony 50.0 43.1 ug/L 86 80 -120 Thallium 50.0 40.8 ug/L 82 80-120 Lab Sample ID: 752-1612-1 MS Client Sample ID: 4116-MW1 Matrix: Water Prep Type: Total Recoverable Analysis Batch: 761081 Prep Batch: 760799 Sample Sample Spike MS MS %Rec Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits Antimony 0.36 J B 50.0 56.5 ug/L 112 75 -125 Thallium <0.26 50.0 52.6 ug/L 105 75-125 Lab Sample ID: 752-1612-1 MSD Client Sample ID: 4116-MW1 Matrix: Water Prep Type: Total Recoverable Analysis Batch: 761081 Prep Batch: 760799 Sample Sample Spike MSD MSD %Rec RPD Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit Antimony 0.36 J B 50.0 46.7 ug/L 93 75 -125 19 20 Thallium <0.26 50.0 43.1 ug/L 86 75-125 20 20 Lab Sample ID: MB 680-761891/1-A Client Sample ID: Method Blank Matrix: Water Prep Type: Total Recoverable Analysis Batch: 762158 Prep Batch: 761891 MB MB Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac Antimony 1.14 J 5.0 0.34 ug/L 02/03/2312:17 02/06/2311:27 1 Thallium <0.26 1.0 0.26 ug/L 02/03/2312:17 02/06/2311:27 1 Eurofins Raleigh Page 65 of 98 2/21/2023 QC Sample Results Client: WSP USA Inc Project/Site: High Point Method: 6020B - Metals (ICP/MS) (Continued) Lab Sample ID: LCS 680-761891/2-A Matrix: Water Analysis Batch: 762158 Analyte Antimony Thallium Lab Sample ID: 752-1993-1 MS Matrix: Water Analysis Batch: 762158 Sample Sample Analyte Result Qualifier Antimony 0.87 J F2 F1 B Thallium <0.26 F2 LLab Sample ID: 752-1993-1 MSD Matrix: Water Analysis Batch: 762158 Spike Added 50.0 50.0 Spike Added 50.0 50.0 Sample Sample Spike Analyte Result Qualifier Added Antimony 0.87 J F2 F1 B 50.0 Thallium <0.26 F2 50.0 Method: 7470A - Mercury (CVA/ Lab Sample ID: MB 680-761187/1-A Matrix: Water Analysis Batch: 761371 MB MB Analyte Result Qualifier Mercury <0.080 Lab Sample ID: LCS 680-761187/2-A Matrix: Water Analysis Batch: 761371 Analyte LMercury Lab Sample ID: MB 680-761202/1-A Matrix: Water Analysis Batch: 761371 MB MB Analyte Result Qualifier Mercury <0.080 LLab Sample ID: LCS 680-761202/2-A Matrix: Water Analysis Batch: 761371 Analyte Mercury Job ID: 752-1612-1 Client Sample ID: Lab Control Sample Prep Type: Total Recoverable Prep Batch: 761891 LCS LCS %Rec Result Qualifier Unit D %Rec Limits 53.1 ug/L 106 80 -120 49.1 ug/L 98 80 -120 Client Sample ID: 4116-P3 Prep Type: Total Recoverable Prep Batch: 761891 MS MS %Rec Result Qualifier Unit D %Rec Limits 51.2 ug/L 101 75 -125 47.5 ug/L 95 75 -125 Client Sample ID: 4116-P3 Prep Type: Total Recoverable Prep Batch: 761891 MSD MSD %Rec RPD Result Qualifier Unit D %Rec Limits RPD Limit 65.8 F1 F2 ug/L 130 75-125 25 20 62.1 F2 ug/L 124 75 -125 27 20 Client Sample ID: Method Blank Prep Type: Total/NA Prep Batch: 761187 RL MDL Unit D Prepared Analyzed Dil Fac 0.20 0.080 ug/L 01/30/23 12:33 01/31/23 09:44 1 Client Sample ID: Lab Control Sample Prep Type: Total/NA Prep Batch: 761187 Spike LCS LCS %Rec Added Result Qualifier Unit D %Rec Limits 2.50 2.47 ug/L 99 80 -120 Client Sample ID: Method Blank Prep Type: Total/NA Prep Batch: 761202 RL MDL Unit D Prepared Analyzed Dil Fac 0.20 0.080 ug/L 01/30/2313:47 01/31/2310:55 1 Client Sample ID: Lab Control Sample Prep Type: Total/NA Prep Batch: 761202 Spike LCS LCS %Rec Added Result Qualifier Unit D %Rec Limits 2.50 2.46 ug/L 98 80 -120 Page 66 of 98 Eurofins Raleigh 2/21 /2023 QC Sample Results Client: WSP USA Inc Project/Site: High Point Method: 7470A - Mercury (CVAA) (Continued) Lab Sample ID: 752-1612-3 MS Matrix: Water Analysis Batch: 761371 Sample Sample Spike Analyte Result Qualifier Added Mercury <0.080 1.00 Lab Sample ID: 752-1612-3 MSD Matrix: Water Analysis Batch: 761371 Sample Sample Spike Analyte Result Qualifier Added Mercury <0.080 1.00 Lab Sample ID: MB 680-761902/1-A Matrix: Water Analysis Batch: 762145 MB MB Analyte Result Qualifier Mercury <0.080 Lab Sample ID: LCS 680-761902/2-A Matrix: Water Analysis Batch: 762145 Spike Analyte Added Mercury 2.50 Method: SM 2540C - Solids, Total Dissolved (TD Lab Sample ID: MB 752-714/1 Matrix: Water Analysis Batch: 714 MB MB Analyte Result Qualifier Total Dissolved Solids <50 Lab Sample ID: LCS 752-714/2 Matrix: Water Analysis Batch: 714 Spike Analyte Added Total Dissolved Solids 1000 Lab Sample ID: 752-1612-1 DU Matrix: Water Analysis Batch: 714 Sample Sample Analyte Result Qualifier Total Dissolved Solids 410 F Job ID: 752-1612-1 MS MS Result Qualifier Client Sample ID: 4116-MW5 Prep Type: Total/NA Prep Batch: 761202 %Rec Unit D %Rec Limits 0.971 ug/L 97 80 - 120 Client Sample ID: 4116-MW5 Prep Type: Total/NA Prep Batch: 761202 Iw MSD MSD %Rec RPD Result Qualifier Unit D %Rec Limits RPD Limit 0.957 ug/L 96 80-120 1 20 Client Sample ID: Method Blank Prep Type: Total/NA Prep Batch: 761902 RL MDL Unit D Prepared Analyzed Dil Fac 0.20 0.080 ug/L 02/03/2313:06 02/06/2311:58 1 Client Sample ID: Lab Control Sample Prep Type: Total/NA Prep Batch: 761902 LCS LCS %Rec Result Qualifier Unit D %Rec Limits 2.57 ug/L 103 80 -120 Client Sample ID: Method Blank Prep Type: Total/NA RL MDL Unit D Prepared Analyzed Dil Fac 50 50 mg/L 01/30/2313:36 1 Client Sample ID: Lab Control Sample Prep Type: Total/NA LCS LCS Result Qualifier Unit 998 mg/L DU DU Result Qualifier Unit 414 mg/L %Rec D %Rec Limits 100 90-110 Client Sample ID: 4116-MW1 Prep Type: Total/NA RPD D RPD Limit 1 10 Eurofins Raleigh Page 67 of 98 2/21 /2023 QC Sample Results Client: WSP USA Inc Project/Site: High Point F Job ID: 752-1612-1 Method: SM 2540C - Solids, Total Dissolved (TDS) (Continued) Lab Sample ID: 752-1612-2 DU Client Sample ID: 4116-MW2 Matrix: Water Prep Type: Total/NA Analysis Batch: 714 Sample Sample DU DU RPD Analyte Result Qualifier Result Qualifier Unit D RPD Limit Total Dissolved Solids 1200 1270 mg/L 4 10 Lab Sample ID: MB 752-726/1 Matrix: Water Analysis Batch: 726 MB MB Analyte Result Qualifier RL MDL Unit Total Dissolved Solids <50 50 50 mg/L Lab Sample ID: LCS 752-726/2 Matrix: Water Analysis Batch: 726 Client Sample ID: Method Blank Prep Type: Total/NA D Prepared Analyzed Dil Fac 01 /31 /23 10:37 1 Client Sample ID: Lab Control Sample Prep Type: Total/NA Spike LCS LCS %Rec Analyte Added Result Qualifier Unit D %Rec Limits Total Dissolved Solids 1000 1040 mg/L 104 90 -110 Eurofins Raleigh Page 68 of 98 2/21 /2023 QC Association Summary Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point GC/MS VOA Analysis Batch: 879 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1612-1 4116-MW1 Total/NA Water 8260D 752-1612-2 4116-MW2 Total/NA Water 8260D 752-1612-3 4116-MW5 Total/NA Water 8260D 752-1612-4 4116-MW6 Total/NA Water 8260D 752-1612-5 4116-MW8 Total/NA Water 8260D 752-1612-6 4116-AMW1 Total/NA Water 8260D 752-1612-7 4116-AMW2 Total/NA Water 8260D 752-1993-2 4116-SW1 Total/NA Water 8260D 752-1993-3 4116-SW2 Total/NA Water 8260D 752-1993-4 4116-SW3 Total/NA Water 8260D 752-1993-5 4116-SW4 Total/NA Water 8260D 752-1993-6 4116-SW5 Total/NA Water 8260D 752-1993-7 4116-SW6 Total/NA Water 8260D 752-1993-8 4116-MW3 Total/NA Water 8260D 752-1993-9 4116-MW4S Total/NA Water 8260D 752-1993-10 4116-MW7S Total/NA Water 8260D 752-1993-11 4116-Field Blank Total/NA Water 8260D 752-1993-12 4116-Trip Blank Total/NA Water 8260D MB 752-879/6 Method Blank Total/NA Water 8260D LCS 752-879/3 Lab Control Sample Total/NA Water 8260D LCSD 752-879/4 Lab Control Sample Dup Total/NA Water 8260D MRL 752-879/2 Lab Control Sample Total/NA Water 8260D Analysis Batch: 1195 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1612-2 4116-MW2 Total/NA Water 8260D 752-1612-4 4116-MW6 Total/NA Water 8260D 752-1612-5 4116-MW8 Total/NA Water 8260D 752-1993-10 4116-MW7S Total/NA Water 8260D 752-1993-11 4116-Field Blank Total/NA Water 8260D MB 752-1195/8 Method Blank Total/NA Water 8260D LCS 752-1195/5 Lab Control Sample Total/NA Water 8260D LCSD 752-1195/6 Lab Control Sample Dup Total/NA Water 8260D MRL 752-1195/4 Lab Control Sample Total/NA Water 8260D Analysis Batch: 761663 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1612-1 4116-MW1 Total/NA Water 8260D SIM 14D 752-1612-2 4116-MW2 Total/NA Water 8260D SIM 14D 752-1612-3 4116-MW5 Total/NA Water 8260D SIM 14D 752-1612-4 4116-MW6 Total/NA Water 8260D SIM 14D 752-1612-5 4116-MW8 Total/NA Water 8260D SIM 14D 752-1612-6 4116-AMW1 Total/NA Water 8260D SIM 14D 752-1612-7 4116-AMW2 Total/NA Water 8260D SIM 14D MB 680-761663/5 Method Blank Total/NA Water 8260D SIM 14D LCS 680-761663/3 Lab Control Sample Total/NA Water 8260D SIM 14D Analysis Batch: 761808 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1993-2 4116-SW1 Total/NA Water 8260D SIM 14D 752-1993-3 4116-SW2 Total/NA Water 8260D SIM 14D Eurofins Raleigh Page 69 of 98 2/21/2023 QC Association Summary Client: WSP USA Inc Project/Site: High Point Job ID: 752-1612-1 GC/MS VOA (Continued) Analysis Batch: 761808 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1993-4 4116-SW3 Total/NA Water 8260D SIM 14D 752-1993-5 4116-SW4 Total/NA Water 8260D SIM 14D 752-1993-6 4116-SW5 Total/NA Water 8260D SIM 14D 752-1993-7 4116-SW6 Total/NA Water 8260D SIM 14D 752-1993-8 4116-MW3 Total/NA Water 8260D SIM 14D 752-1993-9 4116-MW4S Total/NA Water 8260D SIM 14D 752-1993-10 4116-MW7S Total/NA Water 8260D SIM 14D 752-1993-11 4116-Field Blank Total/NA Water 8260D SIM 14D 752-1993-12 4116-Trip Blank Total/NA Water 8260D SIM 14D MB 680-761808/5 Method Blank Total/NA Water 8260D SIM 14D LCS 680-761808/3 Lab Control Sample Total/NA Water 8260D SIM 14D HPLC/IC Analysis Batch: 885 Lab Sample ID Client Sample ID Prep Type Matrix Method 752-1993-8 4116-MW3 Total/NA Water 300.0 752-1993-9 4116-MW4S Total/NA Water 300.0 752-1993-10 4116-MW7S Total/NA Water 300.0 MB 752-885/21 Method Blank Total/NA Water 300.0 MB 752-885/4 Method Blank Total/NA Water 300.0 LCS 752-885/22 Lab Control Sample Total/NA Water 300.0 MRL 752-885/3 Lab Control Sample Total/NA Water 300.0 Analysis Batch: 763712 Prep Batch Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1612-1 4116-MW1 Total/NA Water 300.0 752-1612-2 4116-MW2 Total/NA Water 300.0 752-1612-3 4116-MW5 Total/NA Water 300.0 752-1612-4 4116-MW6 Total/NA Water 300.0 752-1612-5 4116-MW8 Total/NA Water 300.0 752-1612-6 4116-AMW1 Total/NA Water 300.0 752-1612-7 4116-AMW2 Total/NA Water 300.0 MB 680-763712/33 Method Blank Total/NA Water 300.0 LCS 680-763712/34 Lab Control Sample Total/NA Water 300.0 LCSD 680-763712/35 Lab Control Sample Dup Total/NA Water 300.0 752-1612-6 MS 4116-AMW1 Total/NA Water 300.0 752-1612-6 MSD 4116-AMW1 Total/NA Water 300.0 Metals Prep Batch: 760798 Lab Sample ID Client Sample ID 752-1612-1 4116-M W 1 752-1612-2 4116-MW2 752-1612-3 4116-MW5 752-1612-4 4116-MW6 752-1612-5 4116-MW8 752-1612-6 4116-AM W 1 752-1612-7 4116-AMW2 752-1612-1 MS 4116-MW1 752-1612-1 MSD 4116-MW1 Prep Type Matrix Method Prep Batch Total Recoverable Water 3005A Total Recoverable Water 3005A Total Recoverable Water 3005A Total Recoverable Water 3005A Total Recoverable Water 3005A Total Recoverable Water 3005A Total Recoverable Water 3005A Total Recoverable Water 3005A Total Recoverable Water 3005A 0 Page 70 of 98 Eurofins Raleigh 2/21 /2023 QC Association Summary Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Metals Prep Batch: 760799 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1612-1 4116-MW1 Total Recoverable Water 3005A 752-1612-2 4116-MW2 Total Recoverable Water 3005A 752-1612-3 4116-MW5 Total Recoverable Water 3005A 752-1612-4 4116-MW6 Total Recoverable Water 3005A 752-1612-5 4116-MW8 Total Recoverable Water 3005A 752-1612-6 4116-AMW1 Total Recoverable Water 3005A 752-1612-7 4116-AMW2 Total Recoverable Water 3005A MB 680-760799/1-A Method Blank Total Recoverable Water 3005A LCS 680-760799/2-A Lab Control Sample Total Recoverable Water 3005A 752-1612-1 MS 4116-MW1 Total Recoverable Water 3005A 752-1612-1 MSD 4116-MW1 Total Recoverable Water 3005A Analysis Batch: 760952 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1612-1 4116-MW1 Total Recoverable Water 6010D 760798 752-1612-2 4116-MW2 Total Recoverable Water 6010D 760798 752-1612-3 4116-MW5 Total Recoverable Water 6010D 760798 752-1612-4 4116-MW6 Total Recoverable Water 6010D 760798 752-1612-5 4116-MW8 Total Recoverable Water 6010D 760798 752-1612-6 4116-AMW1 Total Recoverable Water 6010D 760798 752-1612-7 4116-AMW2 Total Recoverable Water 6010D 760798 752-1612-1 MS 4116-MW1 Total Recoverable Water 6010D 760798 752-1612-1 MSD 4116-MW1 Total Recoverable Water 6010D 760798 Analysis Batch: 761081 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1612-1 4116-MW1 Total Recoverable Water 6020B 760799 752-1612-2 4116-MW2 Total Recoverable Water 6020B 760799 752-1612-3 4116-MW5 Total Recoverable Water 6020E 760799 752-1612-4 4116-MW6 Total Recoverable Water 6020B 760799 752-1612-5 4116-MW8 Total Recoverable Water 6020B 760799 752-1612-6 4116-AMW1 Total Recoverable Water 6020B 760799 752-1612-7 4116-AMW2 Total Recoverable Water 6020B 760799 MB 680-760799/1-A Method Blank Total Recoverable Water 6020B 760799 LCS 680-760799/2-A Lab Control Sample Total Recoverable Water 6020B 760799 752-1612-1 MS 4116-MW1 Total Recoverable Water 6020B 760799 752-1612-1 MSD 4116-MW1 Total Recoverable Water 6020E 760799 Prep Batch: 761187 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1612-1 4116-MW1 Total/NA Water 7470A 752-1612-2 4116-MW2 Total/NA Water 7470A MB 680-761187/1-A Method Blank Total/NA Water 7470A LCS 680-761187/2-A Lab Control Sample Total/NA Water 7470A Prep Batch: 761202 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1612-3 4116-MW5 Total/NA Water 7470A 752-1612-4 4116-MW6 Total/NA Water 7470A 752-1612-5 4116-MW8 Total/NA Water 7470A 752-1612-6 4116-AMW1 Total/NA Water 7470A Eurofins Raleigh Page 71 of 98 2/21/2023 QC Association Summary Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Metals (Continued) Prep Batch: 761202 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1612-7 4116-AMW2 Total/NA Water 7470A MB 680-761202/1-A Method Blank Total/NA Water 7470A LCS 680-761202/2-A Lab Control Sample Total/NA Water 7470A 752-1612-3 MS 4116-MW5 Total/NA Water 7470A 752-1612-3 MSD 4116-MW5 Total/NA Water 7470A Analysis Batch: 761217 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1612-5 4116-MW8 Total Recoverable Water 6010D 760798 Analysis Batch: 761371 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1612-1 4116-MW1 Total/NA Water 7470A 761187 752-1612-2 4116-MW2 Total/NA Water 7470A 761187 752-1612-3 4116-MW5 Total/NA Water 7470A 761202 752-1612-4 4116-MW6 Total/NA Water 7470A 761202 752-1612-5 4116-MW8 Total/NA Water 7470A 761202 752-1612-6 4116-AMW1 Total/NA Water 7470A 761202 752-1612-7 4116-AMW2 Total/NA Water 7470A 761202 MB 680-761187/1-A Method Blank Total/NA Water 7470A 761187 MB 680-761202/1-A Method Blank Total/NA Water 7470A 761202 LCS 680-761187/2-A Lab Control Sample Total/NA Water 7470A 761187 LCS 680-761202/2-A Lab Control Sample Total/NA Water 7470A 761202 752-1612-3 MS 4116-MW5 Total/NA Water 7470A 761202 752-1612-3 MSD 4116-MW5 Total/NA Water 7470A 761202 Prep Batch: 761890 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1993-1 4116-P3 Total Recoverable Water 3005A 752-1993-2 4116-SW1 Total Recoverable Water 3005A 752-1993-3 4116-SW2 Total Recoverable Water 3005A 752-1993-4 4116-SW3 Total Recoverable Water 3005A 752-1993-5 4116-SW4 Total Recoverable Water 3005A 752-1993-6 4116-SW5 Total Recoverable Water 3005A 752-1993-7 4116-SW6 Total Recoverable Water 3005A 752-1993-8 4116-MW3 Total Recoverable Water 3005A 752-1993-9 4116-MW4S Total Recoverable Water 3005A 752-1993-10 4116-MW7S Total Recoverable Water 3005A 752-1993-11 4116-Field Blank Total Recoverable Water 3005A MB 680-761890/1-A Method Blank Total Recoverable Water 3005A LCS 680-761890/2-A Lab Control Sample Total Recoverable Water 3005A 752-1993-1 MS 4116-P3 Total Recoverable Water 3005A 752-1993-1 MSD 4116-P3 Total Recoverable Water 3005A Prep Batch: 761891 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1993-1 4116-P3 Total Recoverable Water 3005A 752-1993-2 4116-SW1 Total Recoverable Water 3005A 752-1993-3 4116-SW2 Total Recoverable Water 3005A 752-1993-4 4116-SW3 Total Recoverable Water 3005A 752-1993-5 4116-SW4 Total Recoverable Water 3005A Eurofins Raleigh Page 72 of 98 2/21/2023 QC Association Summary Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Metals (Continued) Prep Batch: 761891 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1993-6 4116-SW5 Total Recoverable Water 3005A 752-1993-7 4116-SW6 Total Recoverable Water 3005A 752-1993-8 4116-MW3 Total Recoverable Water 3005A 752-1993-9 4116-MW4S Total Recoverable Water 3005A 752-1993-10 4116-MW7S Total Recoverable Water 3005A 752-1993-11 4116-Field Blank Total Recoverable Water 3005A MB 680-761891/1-A Method Blank Total Recoverable Water 3005A LCS 680-761891/2-A Lab Control Sample Total Recoverable Water 3005A 752-1993-1 MS 4116-P3 Total Recoverable Water 3005A 752-1993-1 MSD 4116-P3 Total Recoverable Water 3005A Prep Batch: 761902 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1993-1 4116-P3 Total/NA Water 7470A 752-1993-8 4116-MW3 Total/NA Water 7470A 752-1993-9 4116-MW4S Total/NA Water 7470A 752-1993-10 4116-MW7S Total/NA Water 7470A 752-1993-11 4116-Field Blank Total/NA Water 7470A MB 680-761902/1-A Method Blank Total/NA Water 7470A LCS 680-761902/2-A Lab Control Sample Total/NA Water 7470A Analysis Batch: 762145 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1993-1 4116-P3 Total/NA Water 7470A 761902 752-1993-8 4116-MW3 Total/NA Water 7470A 761902 752-1993-9 4116-MW4S Total/NA Water 7470A 761902 752-1993-10 4116-MW7S Total/NA Water 7470A 761902 752-1993-11 4116-Field Blank Total/NA Water 7470A 761902 MB 680-761902/1-A Method Blank Total/NA Water 7470A 761902 LCS 680-761902/2-A Lab Control Sample Total/NA Water 7470A 761902 Analysis Batch: 762150 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1993-1 4116-P3 Total Recoverable Water 6010D 761890 752-1993-2 4116-SW1 Total Recoverable Water 6010D 761890 752-1993-3 4116-SW2 Total Recoverable Water 6010D 761890 752-1993-4 4116-SW3 Total Recoverable Water 6010D 761890 752-1993-5 4116-SW4 Total Recoverable Water 6010D 761890 752-1993-6 4116-SW5 Total Recoverable Water 6010D 761890 752-1993-7 4116-SW6 Total Recoverable Water 6010D 761890 752-1993-8 4116-MW3 Total Recoverable Water 6010D 761890 752-1993-9 4116-MW4S Total Recoverable Water 6010D 761890 752-1993-10 4116-MW7S Total Recoverable Water 6010D 761890 752-1993-11 4116-Field Blank Total Recoverable Water 6010D 761890 MB 680-761890/1-A Method Blank Total Recoverable Water 6010D 761890 LCS 680-761890/2-A Lab Control Sample Total Recoverable Water 6010D 761890 752-1993-1 MS 4116-P3 Total Recoverable Water 6010D 761890 752-1993-1 MSD 4116-P3 Total Recoverable Water 6010D 761890 Eurofins Raleigh Page 73 of 98 2/21/2023 QC Association Summary Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Metals Analysis Batch: 762158 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1993-1 4116-P3 Total Recoverable Water 6020B 761891 752-1993-2 4116-SW1 Total Recoverable Water 6020B 761891 752-1993-3 4116-SW2 Total Recoverable Water 6020B 761891 752-1993-4 4116-SW3 Total Recoverable Water 6020B 761891 752-1993-5 4116-SW4 Total Recoverable Water 6020B 761891 752-1993-6 4116-SW5 Total Recoverable Water 6020B 761891 752-1993-7 4116-SW6 Total Recoverable Water 6020B 761891 752-1993-8 4116-MW3 Total Recoverable Water 6020B 761891 752-1993-9 4116-MW4S Total Recoverable Water 6020B 761891 752-1993-10 4116-MW7S Total Recoverable Water 6020B 761891 752-1993-11 4116-Field Blank Total Recoverable Water 6020B 761891 MB 680-761891/1-A Method Blank Total Recoverable Water 6020B 761891 LCS 680-761891/2-A Lab Control Sample Total Recoverable Water 6020E 761891 752-1993-1 MS 4116-P3 Total Recoverable Water 6020E 761891 752-1993-1 MSD 4116-P3 Total Recoverable Water 6020E 761891 General Chemistry Analysis Batch: 714 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1612-1 4116-MW1 Total/NA Water SM 2540C 752-1612-2 4116-MW2 Total/NA Water SM 2540C 752-1612-3 4116-MW5 Total/NA Water SM 2540C 752-1612-4 4116-MW6 Total/NA Water SM 2540C 752-1612-5 4116-MW8 Total/NA Water SM 2540C 752-1612-6 4116-AMW1 Total/NA Water SM 2540C 752-1612-7 4116-AMW2 Total/NA Water SM 2540C MB 752-714/1 Method Blank Total/NA Water SM 2540C LCS 752-714/2 Lab Control Sample Total/NA Water SM 2540C 752-1612-1 DU 4116-MW1 Total/NA Water SM 2540C 752-1612-2 DU 4116-MW2 Total/NA Water SM 2540C Analysis Batch: 726 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch 752-1993-8 4116-MW3 Total/NA Water SM 2540C 752-1993-9 4116-MW4S Total/NA Water SM 2540C 752-1993-10 4116-MW7S Total/NA Water SM 2540C MB 752-726/1 Method Blank Total/NA Water SM 2540C LCS 752-726/2 Lab Control Sample Total/NA Water SM 2540C Eurofins Raleigh Page 74 of 98 2/21/2023 Lab Chronicle Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-MW1 Lab Sample ID: 752-1612-1 Date Collected: 01/23/23 09:04 Matrix: Water Date Received: 01/24/23 12:00 Batch Batch Dilution Batch Prepared Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/02/23 22:32 Total/NA Analysis 8260D SIM 14D 1 761663 SMP EET SAV 02/02/23 15:12 Total/NA Analysis 300.0 1 763712 T1C EET SAV 02/16/23 19:46 Total Recoverable Prep 3005A 760798 RR EET SAV 01/27/23 06:03 Total Recoverable Analysis 6010D 1 760952 BCB EET SAV 01/27/23 14:02 Total Recoverable Prep 3005A 760799 RR EET SAV 01/27/23 06:03 Total Recoverable Analysis 6020B 1 761081 BJB EET SAV 01/27/23 16:24 Total/NA Prep 7470A 761187 JKL EET SAV 01/30/23 12:33 Total/NA Analysis 7470A 1 761371 JKL EET SAV 01/31/23 10:48 m Total/NA Analysis SM 2540C 1 714 CB EET ESC 01/30/23 13:36 Client Sample ID: 4116-MW2 Lab Sample ID: 752-1612-2 Date Collected: 01/23/23 12:35 Matrix: Water Date Received: 01/24/23 12:00 Batch Batch Dilution Batch Prepared C Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/02/23 23:04 Total/NA Analysis 8260D 1 1195 RY EET ESC 02/16/23 01:41 Total/NA Analysis 8260D SIM 14D 10 761663 SMP EET SAV 02/02/23 17:55 Total/NA Analysis 300.0 1 763712 T1C EET SAV 02/16/23 19:59 Total Recoverable Prep 3005A 760798 RR EET SAV 01/27/23 06:03 Total Recoverable Analysis 6010D 1 760952 BCB EET SAV 01/27/23 14:10 Total Recoverable Prep 3005A 760799 RR EET SAV 01/27/23 06:03 Total Recoverable Analysis 6020E 1 761081 BJB EET SAV 01/27/23 16:36 Total/NA Prep 7470A 761187 JKL EET SAV 01/30/23 12:33 Total/NA Analysis 7470A 1 761371 JKL EET SAV 01/31/23 10:50 Total/NA Analysis SM 2540C 1 714 CB EET ESC 01/30/23 13:36 Client Sample ID: 4116-MW5 Lab Sample ID: 752-1612-3 Date Collected: 01/23/23 15:30 Matrix: Water Date Received: 01/24/23 12:00 Batch Batch Dilution Batch Prepared Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/02/23 23:35 Total/NA Analysis 8260D SIM 14D 1 761663 SMP EET SAV 02/02/23 15:40 Total/NA Analysis 300.0 1 763712 T1C EET SAV 02/16/23 20:12 Total Recoverable Prep 3005A 760798 RR EET SAV 01/27/23 06:03 Total Recoverable Analysis 6010D 1 760952 BCB EET SAV 01/27/23 14:12 Total Recoverable Prep 3005A 760799 RR EET SAV 01/27/23 06:03 Total Recoverable Analysis 6020E 1 761081 BJB EET SAV 01/27/23 16:40 Total/NA Prep 7470A 761202 JKL EET SAV 01/30/23 13:47 Total/NA Analysis 7470A 1 761371 JKL EET SAV 01/31/23 11:01 Total/NA Analysis SM 2540C 1 714 CB EET ESC 01/30/23 13:36 Eurofins Raleigh Page 75 of 98 2/21/2023 Lab Chronicle Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-MW6 Lab Sample ID: 752-1612-4 Date Collected: 01/23/23 11:10 Matrix: Water Date Received: 01/24/23 12:00 Batch Batch Dilution Batch Prepared Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/03/23 00:06 Total/NA Analysis 8260D 1 1195 RY EET ESC 02/16/23 02:13 Total/NA Analysis 8260D SIM 14D 10 761663 SMP EET SAV 02/02/23 18:23 Total/NA Analysis 300.0 1 763712 T1 C EET SAV 02/16/23 20:25 Total Recoverable Prep 3005A 760798 RR EET SAV 01/27/23 06:03 Total Recoverable Analysis 6010D 1 760952 BCB EET SAV 01/27/23 14:15 Total Recoverable Prep 3005A 760799 RR EET SAV 01/27/23 06:03 Total Recoverable Analysis 6020B 1 761081 BJB EET SAV 01/27/23 16:44 Total/NA Prep 7470A 761202 JKL EET SAV 01/30/23 13:47 m Total/NA Analysis 7470A 1 761371 JKL EET SAV 01/31/23 11:08 Total/NA Analysis SM 2540C 1 714 CB EET ESC 01/30/23 13:36 Client Sample ID: 4116-MW8 Lab Sample ID: 752-1612-5 Date Collected: 01/23/23 10:23 Matrix: Water Date Received: 01/24/23 12:00 Batch Batch Dilution Batch Prepared Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/03/23 00:38 Total/NA Analysis 8260D 1 1195 RY EET ESC 02/16/23 02:44 Total/NA Analysis 8260D SIM 14D 10 761663 SMP EET SAV 02/02/23 18:50 Total/NA Analysis 300.0 1 763712 T1 C EET SAV 02/16/23 20:38 Total Recoverable Prep 3005A 760798 RR EET SAV 01/27/23 06:03 Total Recoverable Analysis 6010D 1 760952 BCB EET SAV 01/27/23 14:17 Total Recoverable Prep 3005A 760798 RR EET SAV 01/27/23 06:03 Total Recoverable Analysis 6010D 10 761217 BCB EET SAV 01/30/23 14:32 Total Recoverable Prep 3005A 760799 RR EET SAV 01/27/23 06:03 Total Recoverable Analysis 6020E 1 761081 BJB EET SAV 01/27/23 16:48 Total/NA Prep 7470A 761202 JKL EET SAV 01/30/23 13:47 Total/NA Analysis 7470A 1 761371 JKL EET SAV 01/31/23 11:16 Total/NA Analysis SM 2540C 1 714 CB EET ESC 01/30/23 13:36 Client Sample ID: 4116-AMW1 Lab Sample ID: 752-1612-6 Date Collected: 01/23/23 15:00 Matrix: Water Date Received: 01/24/23 12:00 Batch Batch Dilution Batch Prepared Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/03/23 01:09 Total/NA Analysis 8260D SIM 14D 10 761663 SMP EET SAV 02/02/23 19:17 Total/NA Analysis 300.0 1 763712 T1 C EET SAV 02/16/23 21:18 Total Recoverable Prep 3005A 760798 RR EET SAV 01/27/23 06:03 Total Recoverable Analysis 6010D 1 760952 BCB EET SAV 01/27/23 14:20 Total Recoverable Prep 3005A 760799 RR EET SAV 01/27/23 06:03 Total Recoverable Analysis 6020B 1 761081 BJB EET SAV 01/27/23 16:52 Eurofins Raleigh Page 76 of 98 2/21/2023 Lab Chronicle Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-AMW1 Lab Sample ID: 752-1612-6 Date Collected: 01/23/23 15:00 Matrix: Water Date Received: 01/24/23 12:00 Batch Batch Dilution Batch Prepared Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Prep 7470A 761202 JKL EET SAV 01/30/23 13:47 Total/NA Analysis 7470A 1 761371 JKL EET SAV 01/31/23 11:18 Total/NA Analysis SM 2540C 1 714 CB EET ESC 01/30/23 13:36 Client Sample ID: 4116-AMW2 Date Collected: 01/23/23 13:20 Date Received: 01/24/23 12:00 Batch Batch Prep Type Type Method Total/NA Analysis 8260D Total/NA Analysis 8260D SIM 14D Total/NA Analysis 300.0 Total Recoverable Prep 3005A Total Recoverable Analysis 6010D Total Recoverable Prep 3005A Total Recoverable Analysis 6020B Total/NA Prep 7470A Total/NA Analysis 7470A Total/NA Analysis SM 2540C Dilution Run Factor 1 10 1 Lab Sample ID: 752-1612-7 Matrix: Water Batch Prepared Number Analyst Lab or Analyzed 879 RY EET ESC 02/03/23 01:40 ED 761663 SMP EET SAV 02/02/23 19:44 763712 T1 C EET SAV 02/16/23 21:57 760798 RR EET SAV 01/27/23 06:03 760952 BCB EET SAV 01/27/23 14:28 760799 RR EET SAV 01/27/23 06:03 761081 BJB EET SAV 01/27/23 16:56 761202 JKL EET SAV 01/30/23 13:47 761371 JKL EET SAV 01/31/23 11:21 714 CB EET ESC 01/30/23 13:36 Client Sample ID: 4116-P3 Lab Sample ID: 752-1993-1 Date Collected: 01/24/23 09:37 Matrix: Water Date Received: 01/25/23 14:45 Prep Type Batch Type Batch Method Dilution Run Factor Batch Number Analyst Lab Prepared or Analyzed Total Recoverable Prep 3005A 761890 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6010D 1 762150 BCB EET SAV 02/06/23 12:21 Total Recoverable Prep 3005A 761891 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6020B 1 762158 BJB EET SAV 02/06/23 11:35 Total/NA Prep 7470A 761902 JKL EET SAV 02/03/23 13:06 Total/NA Analysis 7470A 1 762145 JKL EET SAV 02/06/23 12:18 Client Sample ID: 4116-SW1 Date Collected: 01/24/23 13:31 Date Received: 01/25/23 14:45 Batch Batch Prep Type Type Method Total/NA Analysis 8260D Total/NA Analysis 8260D SIM 14D Total Recoverable Prep 3005A Total Recoverable Analysis 6010D Total Recoverable Prep 3005A Total Recoverable Analysis 6020B Lab Sample ID: 752-1993-2 Matrix: Water Dilution Run Factor Batch Number Analyst Lab Prepared or Analyzed 1 879 RY EET ESC 02/03/23 02:11 1 761808 SMP EET SAV 02/03/23 14:15 761890 RR EET SAV 02/03/23 12:17 1 762150 BCB EET SAV 02/06/23 12:36 761891 RR EET SAV 02/03/23 12:17 1 762158 BJB EET SAV 02/06/23 11:48 Eurofins Raleigh Page 77 of 98 2/21/2023 Lab Chronicle Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-SW2 Lab Sample ID: 752-1993-3 Date Collected: 01/24/23 13:09 Matrix: Water Date Received: 01/25/23 14:45 Batch Batch Dilution Batch Prepared Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/03/23 02:43 Total/NA Analysis 8260D SIM 14D 1 761808 SMP EET SAV 02/03/23 14:42 Total Recoverable Prep 3005A 761890 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6010D 1 762150 BCB EET SAV 02/06/23 12:39 Total Recoverable Prep 3005A 761891 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6020B 1 762158 BJB EET SAV 02/06/23 11:52 Client Sample ID: 4116-SW3 Lab Sample ID: 752-1993-4 Date Collected: 01/24/23 12:53 Matrix: Water Date Received: 01/25/23 14:45 Batch Batch Dilution Batch Prepared Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/03/23 03:14 Total/NA Analysis 8260D SIM 14D 1 761808 SMP EET SAV 02/03/23 15:09 Total Recoverable Prep 3005A 761890 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6010D 1 762150 BCB EET SAV 02/06/23 12:42 Total Recoverable Prep 3005A 761891 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6020B 1 762158 BJB EET SAV 02/06/23 11:56 Client Sample ID: 4116-SW4 Lab Sample ID: 752-1993-5 Date Collected: 01/25/23 09:10 Matrix: Water Date Received: 01/25/23 14:45 Batch Batch Dilution Batch Prepared Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/03/23 03:45 Total/NA Analysis 8260D SIM 14D 1 761808 SMP EET SAV 02/03/23 15:36 Total Recoverable Prep 3005A 761890 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6010D 1 762150 BCB EET SAV 02/06/23 12:45 Total Recoverable Prep 3005A 761891 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6020E 1 762158 BJB EET SAV 02/06/23 12:00 Client Sample ID: 4116-SW5 Lab Sample ID: 752-1993-6 Date Collected: 01/24/23 12:16 Matrix: Water Date Received: 01/25/23 14:45 Prep Type Batch Type Batch Method Dilution Run Factor Batch Number Analyst Lab Prepared or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/03/23 04:17 Total/NA Analysis 8260D SIM 14D 10 761808 SMP EET SAV 02/03/23 17:24 Total Recoverable Prep 3005A 761890 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6010D 1 762150 BCB EET SAV 02/06/23 12:48 Total Recoverable Prep 3005A 761891 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6020E 1 762158 BJB EET SAV 02/06/23 12:04 Eurofins Raleigh Page 78 of 98 2/21/2023 Lab Chronicle Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Client Sample ID: 4116-SW6 Lab Sample ID: 752-1993-7 Date Collected: 01/24/23 12:07 Matrix: Water Date Received: 01/25/23 14:45 Batch Batch Dilution Batch Prepared Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/03/23 04:48 Total/NA Analysis 8260D SIM 14D 1 761808 SMP EET SAV 02/03/23 16:03 Total Recoverable Prep 3005A 761890 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6010D 1 762150 BCB EET SAV 02/06/23 12:51 Total Recoverable Prep 3005A 761891 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6020B 1 762158 BJB EET SAV 02/06/23 12:16 Client Sample ID: 4116-MW3 Lab Sample ID: 752-1993-8 Date Collected: 01/24/23 09:50 Matrix: Water Date Received: 01/25/23 14:45 Batch Batch Dilution Batch Prepared Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/03/23 05:19 Total/NA Analysis 8260D SIM 14D 1 761808 SMP EET SAV 02/03/23 16:30 Total/NA Analysis 300.0 1 885 CB EET ESC 02/02/23 21:09 Total Recoverable Prep 3005A 761890 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6010D 1 762150 BCB EET SAV 02/06/23 12:54 Total Recoverable Prep 3005A 761891 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6020B 1 762158 BJB EET SAV 02/06/23 12:20 Total/NA Prep 7470A 761902 JKL EET SAV 02/03/23 13:06 Total/NA Analysis 7470A 1 762145 JKL EET SAV 02/06/23 12:41 Total/NA Analysis SM 2540C 1 726 CB EET ESC 01/31/23 10:37 Client Sample ID: 4116-MW4S Lab Sample ID: 752-1993-9 Date Collected: 01/24/23 12:15 Matrix: Water Date Received: 01/25/23 14:45 Batch Batch Dilution Batch Prepared Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/03/23 05:51 Total/NA Analysis 8260D SIM 14D 1 761808 SMP EET SAV 02/03/23 16:57 Total/NA Analysis 300.0 1 885 CB EET ESC 02/02/23 21:24 Total Recoverable Prep 3005A 761890 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6010D 1 762150 BCB EET SAV 02/06/23 12:57 Total Recoverable Prep 3005A 761891 RR EET SAV 02/03/23 12:17 Total Recoverable Analysis 6020E 1 762158 BJB EET SAV 02/06/23 12:24 Total/NA Prep 7470A 761902 JKL EET SAV 02/03/23 13:06 Total/NA Analysis 7470A 1 762145 JKL EET SAV 02/06/23 12:44 Total/NA Analysis SM 2540C 1 726 CB EET ESC 01/31/23 10:37 Eurofins Raleigh Page 79 of 98 2/21/2023 Lab Chronicle Client: WSP USA Inc Project/Site: High Point F Job ID: 752-1612-1 Client Sample ID: 4116-MW7S Lab Sample ID: 752-1993-10 Date Collected: 01/24/23 11:01 Matrix: Water Date Received: 01/25/23 14:45 Batch Batch Prep Type Type Method Total/NA Analysis 8260D Total/NA Analysis 8260D Total/NA Analysis 8260D SIM 14D Total/NA Analysis 300.0 Total Recoverable Prep 3005A Total Recoverable Analysis 6010D Total Recoverable Prep 3005A Total Recoverable Analysis 6020B Total/NA Prep 7470A Total/NA Analysis 7470A Total/NA Analysis SM 2540C Client Sample ID: 4116-Field Blank Date Collected: 01/24/23 14:02 Date Received: 01/25/23 14:45 Batch Batch Prep Type Type Method Total/NA Analysis 8260D Total/NA Analysis 8260D Total/NA Analysis 8260D SIM 14D Total Recoverable Prep 3005A Total Recoverable Analysis 6010D Total Recoverable Prep 3005A Total Recoverable Analysis 6020E Total/NA Prep 7470A Total/NA Analysis 7470A Client Sample ID: 4116-Trip Blank Date Collected: 01/24/23 09:50 Date Received: 01/25/23 14:45 Dilution Batch Prepared Run Factor Number Analyst Lab or Analyzed 1 879 RY EET ESC 02/03/23 06:22 1 1195 RY EET ESC 02/16/23 03:15 10 761808 SMP EET SAV 02/03/23 17:52 1 885 CB EET ESC 02/02/23 21:38 761890 RR EET SAV 02/03/23 12:17 1 762150 BCB EET SAV 02/06/23 13:00 761891 RR EET SAV 02/03/23 12:17 1 762158 BJB EET SAV 02/06/23 12:29 761902 JKL EET SAV 02/03/23 13:06 m 1 762145 JKL EET SAV 02/06/23 12:46 1 726 CB EET ESC 01/31/23 10:37 Lab Sample ID: 752-1993-11 Matrix: Water Dilution Batch Prepared Run Factor Number Analyst Lab or Analyzed 1 879 RY EET ESC 02/02/23 22:01 1 1195 RY EET ESC 02/16/23 04:18 1 761808 SMP EET SAV 02/03/23 13:48 761890 RR EET SAV 02/03/23 12:17 1 762150 BCB EET SAV 02/06/23 13:09 761891 RR EET SAV 02/03/23 12:17 1 762158 BJB EET SAV 02/06/23 12:33 761902 JKL EET SAV 02/03/23 13:06 1 762145 JKL EET SAV 02/06/23 12:49 Lab Sample ID: 752-1993-12 Matrix: Water Batch Batch Dilution Batch Prepared Prep Type Type Method Run Factor Number Analyst Lab or Analyzed Total/NA Analysis 8260D 1 879 RY EET ESC 02/02/23 21:30 Total/NA Analysis 8260D SIM 14D 1 761808 SMP EET SAV 02/03/23 13:20 Laboratory References: EET ESC = Eurofins Raleigh, 102-A Woodwinds Industrial Court, Cary, NC 27511, TEL (919)677-1669 EET SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL (912)354-7858 Eurofins Raleigh Page 80 of 98 2/21/2023 Accreditation/Certification Summary Client: WSP USA Inc Project/Site: High Point Laboratory: Eurofins Raleigh The accreditations/certifications listed below are applicable to this report. Authority Program Identification Number Expiration Date North Carolina (WW/SW) State 591 12-31-23 Laboratory: Eurofins Savannah The accreditations/certifications listed below are applicable to this report. Authority Program Identification Number Expiration Date North Carolina (WW/SW) State 269 12-31-23 F Job ID: 752-1612-1 Eurofins Raleigh Page 81 of 98 2/21 /2023 Method Summary C Client: WSP USA Inc Job ID: 752-1612-1 Project/Site: High Point Method Method Description Protocol Laboratory 8260D Volatile Organic Compounds by GC/MS SW846 EET ESC 8260D SIM 14D Volatile Organic Compounds (GC/MS) SW846 EET SAV 300.0 Anions, Ion Chromatography EPA EET ESC 300.0 Anions, Ion Chromatography EPA EET SAV 6010D Metals (ICP) SW846 EET SAV 6020B Metals (ICP/MS) SW846 EET SAV 7470A Mercury (CVAA) SW846 EET SAV SM 2540C Solids, Total Dissolved (TDS) SM EET ESC 3005A Preparation, Total Recoverable or Dissolved Metals SW846 EET SAV 5030C Purge and Trap SW846 EET ESC 5030C Purge and Trap SW846 EET SAV 7470A Preparation, Mercury SW846 EET SAV Protocol References: EPA= US Environmental Protection Agency SM = "Standard Methods For The Examination Of Water And Wastewater" SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: EET ESC = Eurofins Raleigh, 102-A Woodwinds Industrial Court, Cary, NC 27511, TEL (919)677-1669 EET SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL (912)354-7858 Eurofins Raleigh Page 82 of 98 2/21/2023 Client: WSP USA Inc Sample Summary Job ID: 752-1612-1 Project/Site: High Point Lab Sample ID Client Sample ID Matrix Collected Received 752-1612-1 4116-MW1 Water 01/23/23 09:04 01/24/23 12:00 752-1612-2 4116-MW2 Water 01/23/2312:35 01/24/2312:00 752-1612-3 4116-MW5 Water 01/23/2315:30 01/24/2312:00 752-1612-4 4116-MW6 Water 01/23/2311:10 01/24/2312:00 752-1612-5 4116-MW8 Water 01/23/2310:23 01/24/2312:00 752-1612-6 4116-AMW1 Water 01/23/2315:00 01/24/2312:00 752-1612-7 4116-AMW2 Water 01/23/2313:20 01/24/2312:00 752-1993-1 4116-P3 Water 01/24/23 09:37 01/25/23 14:45 752-1993-2 4116-SW1 Water 01/24/2313:31 01/25/23 14:45 752-1993-3 4116-SW2 Water 01/24/2313:09 01/25/23 14:45 752-1993-4 4116-SW3 Water 01/24/2312:53 01/25/23 14:45 752-1993-5 4116-SW4 Water 01/25/23 09:10 01/25/23 14:45 752-1993-6 4116-SW5 Water 01/24/2312:16 01/25/23 14:45 752-1993-7 4116-SW6 Water 01/24/2312:07 01/25/23 14:45 752-1993-8 4116-MW3 Water 01/24/23 09:50 01/25/23 14:45 752-1993-9 4116-MW4S Water 01/24/2312:15 01/25/23 14:45 752-1993-10 4116-MW7S Water 01/24/2311:01 01/25/23 14:45 752-1993-11 4116-Field Blank Water 01/24/23 14:02 01/25/23 14:45 752-1993-12 4116-Trip Blank Water 01/24/23 09:50 01/25/23 14:45 Page 83 of 98 EurofinsON1403 O U i m •� C (° (D 'C N r- IA b N 0 z T. 3 N Z o LLJ U LL y-. 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CD 0 0 (A m Ln 8 9 CI) m (b )>, aM, U) U) 0 CD 3 5 5 q 3 3 O(b X 71 (D m @ ITO c ,n z � 0 (D 0 3 o CD C. a) (D 5.of --i ct. o d al o r- (n wa TL o aj, 3 lb m 3 to = EF m a lotial, Wool) of Containers rn 2 a: o m C) a] > '0 -j (fin -u w -4 (p o m I MM!22 >>KZZNZ:E 0 4t m (D NO COD Oq� 3 (D 8 , 0 X 0 � > Z (D 3 CD > a � T- 0 W > 0 a a cmr tb 0 - 5 " Q % o > 0 0 cn o CL N < C -4 U) X 0 T () Z Z3 n- Jm 0 > Er o in U) o0w DJ N A (n6 " 0 0 0 . (n z 0 0 O 12AQ@ 194 f U 02 A 0 0 C: 4 I kA 7' ?112023 Login Sample Receipt Checklist Client: WSP USA Inc Job Number: 752-1612-1 Login Number: 1612 List Number: 1 Creator: Yonish, Rachel Question List Source: Eurofins Raleigh Answer Comment Radioactivity wasn't checked or is </= background as measured by a survey True meter. The cooler's custody seal, if present, is intact. True Sample custody seals, if present, are intact. True The cooler or samples do not appear to have been compromised or True tampered with. Samples were received on ice. True Cooler Temperature is acceptable. True Cooler Temperature is recorded. True COC is present. True COC is filled out in ink and legible. True COC is filled out with all pertinent information. True Is the Field Sampler's name present on COC? True There are no discrepancies between the containers received and the COC. True Samples are received within Holding Time (excluding tests with immediate True HTs) Sample containers have legible labels. True Containers are not broken or leaking. True Sample collection date/times are provided. True Appropriate sample containers are used. True Sample bottles are completely filled. True Sample Preservation Verified. True There is sufficient vol. for all requested analyses, incl. any requested True MS/MSDs Containers requiring zero headspace have no headspace or bubble is True <6mm (1/4"). Multiphasic samples are not present. True Samples do not require splitting or compositing. True Residual Chlorine Checked. True Eurofins Raleigh Page 95 of 98 2/21/2023 Client: WSP USA Inc Login Number: 1612 List Number: 2 Creator: Padayao, Abigail Question Login Sample Receipt Checklist Answer Comment Radioactivity wasn't checked or is </= background as measured by a survey N/A meter. The cooler's custody seal, if present, is intact. True Sample custody seals, if present, are intact. True The cooler or samples do not appear to have been compromised or True tampered with. Samples were received on ice. False Cooler Temperature is acceptable. True Cooler Temperature is recorded. True COC is present. True COC is filled out in ink and legible. True COC is filled out with all pertinent information. True Is the Field Sampler's name present on COC? N/A There are no discrepancies between the containers received and the COC. True Samples are received within Holding Time (excluding tests with immediate True HTs) Sample containers have legible labels. True Containers are not broken or leaking. True Sample collection date/times are provided. True Appropriate sample containers are used. True Sample bottles are completely filled. True Sample Preservation Verified. N/A There is sufficient vol. for all requested analyses, incl. any requested True MS/MSDs Containers requiring zero headspace have no headspace or bubble is N/A <6mm (1/4"). Multiphasic samples are not present. True Samples do not require splitting or compositing. True Residual Chlorine Checked. N/A Job Number: 752-1612-1 List Source: Eurofins Savannah List Creation: 01/25/23 12:48 PM Thermal preservation not required. Eurofins Raleigh Page 96 of 98 2/21/2023 Login Sample Receipt Checklist Client: WSP USA Inc Job Number: 752-1612-1 Login Number: 1993 List Number: 1 Creator: Hyatt, Samantha Question List Source: Eurofins Raleigh Answer Comment Radioactivity wasn't checked or is </= background as measured by a survey True meter. The cooler's custody seal, if present, is intact. True Sample custody seals, if present, are intact. True The cooler or samples do not appear to have been compromised or True tampered with. Samples were received on ice. True Cooler Temperature is acceptable. True Cooler Temperature is recorded. True COC is present. True COC is filled out in ink and legible. True COC is filled out with all pertinent information. True Is the Field Sampler's name present on COC? True There are no discrepancies between the containers received and the COC. True Samples are received within Holding Time (excluding tests with immediate True HTs) Sample containers have legible labels. True Containers are not broken or leaking. True Sample collection date/times are provided. True Appropriate sample containers are used. True Sample bottles are completely filled. True Sample Preservation Verified. True There is sufficient vol. for all requested analyses, incl. any requested True MS/MSDs Containers requiring zero headspace have no headspace or bubble is True <6mm (1/4"). Multiphasic samples are not present. True Samples do not require splitting or compositing. True Residual Chlorine Checked. True Eurofins Raleigh Page 97 of 98 2/21/2023 Login Sample Receipt Checklist Client: WSP USA Inc Job Number: 752-1612-1 Login Number: 1993 List Number: 2 Creator: Harley, Tynisha Question List Source: Eurofins Savannah List Creation: 02/02/23 02:57 PM Answer Comment Radioactivity wasn't checked or is </= background as measured by a survey N/A meter. The cooler's custody seal, if present, is intact. True Sample custody seals, if present, are intact. True The cooler or samples do not appear to have been compromised or True tampered with. Samples were received on ice. True Cooler Temperature is acceptable. True Cooler Temperature is recorded. True COC is present. True COC is filled out in ink and legible. True COC is filled out with all pertinent information. True Is the Field Sampler's name present on COC? True There are no discrepancies between the containers received and the COC. True Samples are received within Holding Time (excluding tests with immediate True HTs) Sample containers have legible labels. True Containers are not broken or leaking. True Sample collection date/times are provided. True Appropriate sample containers are used. True Sample bottles are completely filled. True Sample Preservation Verified. N/A There is sufficient vol. for all requested analyses, incl. any requested True MS/MSDs Containers requiring zero headspace have no headspace or bubble is N/A <6mm (1/4"). Multiphasic samples are not present. True Samples do not require splitting or compositing. True Residual Chlorine Checked. N/A Eurofins Raleigh Page 98 of 98 2/21/2023 WSP USA Inc. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 5 Project Name: High Point C&D Landfill Project Reference Number., 31405795.004 Sampling Event Date: January 23-25, 2023 Review Date: February 23, 2023 Report #: 752-1612-1 Initials: NTT QA/QC: TJM 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. WSP USA 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 List (.500 Rules) NC C & D List (New Rules) NC Appendix I NC Appendix I + Detects NC Appendix II + cyanide, sulfide (MW-8) NC Subtitle D Leachate List X Other: NC Appendix I + Mercury, Manganese, Iron, tetrahydrofuran & 1,4-dioxane, sulfate, chloride, Alkalinity, and TDS 1.0 CHAIN OF CUSTODY (COC) REVIEW NTT COC was properly signed by all parties. NTT Correct project name and number are on the form. ➢ No project number on COC; PO#31405795.004 NTT Sample receipt condition at laboratory was acceptable. NTT Each sample and blank submitted for analysis appears in the report. WSP USA Inc. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 5 2.0 SAMPLE HOLDING TIMES NTT Holding times for extraction and/or analysis were met for each analytical Method (see below for reference). y Method 8260D: Sample 4116-Field Blank (752-1993-11) detected Acetone at 21 ug/L. The sample was reanalyzed out of hold with confirming results. The in -hold data were reported. Method 8260D: Reanalysis of the following sample(s) was performed outside of the analytical holding time due to failure of quality control parameters in the initial analysis. 4116-MW2 (752-1612-2), 4116-MW6 (752-1612-4), 4116-MW8 (752-1612-5) and 4116-MW7S (752-1993-10) r Method 8260D SIM 14D: The following sample(s) was collected in a properly preserved vial; however, the pH was outside the required criteria when verified by the laboratory. The sample was analyzed outside the 7-day holding time specified for unpreserved samples but within the 14-day holding time specified for preserved samples: 4116-MW6 (752-1612- 4). Review Criteria Method Anal tes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW NTT Laboratory analyzed at least one internal blank for each method, where applicable. NTT Laboratory blank is interference -free. NTT Surrogate recoveries are provided for each analytical method, where applicable. y Method 8260D: The MRL sample (MRL 752-1195/4) was double spiked by the instrument. The surrogate recoveries are elevated. The data were reported. NTT Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). NTT MS/MSD/LCS data results are provided for each analytical method. NTT MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). WSP USA Inc. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 3 of 5 The Method 8260D: The method blank for analytical batch 752-879 contained 2-Butanone (MEK) and trans-1,2-Dichloroethene above the method detection limit (MDL). Associated samples were not re -analyzed because results were less than the reporting limit (RL) OR practical quantitation limit (PQL). 2-Butanone MDL recently adjusted to 10 ug/L with a RL of 20 ug/L. Method 8260D: The continuing calibration verification (CCV) associated with batch 752-879 recovered outside acceptance criteria, low biased, for Chloroethane. A reporting limit (RL) standard was analyzed, and the target analytes are detected. Since the associated samples were non -detect for the analyte(s), the data are reported. y Method 8260D: The laboratory control sample and/or the laboratory control sample duplicate (LCS/LCSD) for analytical batch 752-879 recovered outside control limits for the following analyte(s): 2-Butanone (MEK). 2-Butanone (MEK) has been identified as a poor performing analyte when analyzed using this method; therefore, re-extraction/re-analysis was not performed. r Method 8260D: The LCS and/or LCSD recovered low for 1,2-Dichloropropane, Benzene, Chlorobenzene, Chloroform, Styrene and 1,4-Dichlorobenzene. A MRL sample was analyzed and all target compounds were detected. Samples with target non -detects are reported. Samples with target compounds detected > reporting limit (RL) will be re- analyzed. r Method 602OB: The method blank for preparation batch 680-760799 and analytical batch 680-761081 contained antimony above the method detection limit (MDL). Associated samples were not re -analyzed because results were less than the reporting limit (RL). r Method 300.0: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 752-867 were outside control limits for one or more analytes, see QC Sample Results for detail. Sample matrix interference and/or non -homogeneity are suspected because the associated laboratory control sample (LCS) recovery is within acceptance limits. 4.0 ANALYTE LISTS/METHODS NTT The proper number of constituents are present for each analyte list as identified above (including detects where applicable). NTT Proper EPA SM 2540C-1997 analytical methods were used for analysis. 5.0 DATA REPORTING NTT All analytical reporting associated with the event was performed by the contracted lab. NTT Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been `flagged' with a `B' where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 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. y Trip Blank: Chloroform @ 0.33 ug/L (J), methylene chloride @ 0.26 ug/L (J) WSP USA Inc. N ■ %% I QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 4 of 5 ■ Add B-flags for methylene chloride to MW-7S, SW-3 Field Blank: Acetone @ 21.0 ug/L ■ Add B-flags to MW-2, MW-6, MW-8, AMW-1, AMW-2, SW-3, SW-5, SW-6 ➢ Method Blank: Antimony @ 1.14 ug/L (J) ■ Add B-flags to MW-1, MW-2, P-3, MW-6, SW-1, SW-2, SW-3, SW-4, SW-5, SW-6 NTT It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. ➢ 1,4-Dioxane (10x): MW-2, MW-6, MW-7S, MW-8, AMW-1, AMW-2, SW-5 ➢ Selenium (10x): MW-8 ➢ Silver (10x): MW-8 ➢ Manganese (10x): MW-8 NTT The report provides the reporting limit for each constituent. NTT The results were reported at or below their proper reporting limits (i.e., MDLs with PQLs reported). 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 dilution. NTT No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards/GWPS in wells, or field/equipment/trip blanks, or above applicable surface water standards in surface water points Benzene (NC 2L = 1 uq/L) ➢ Iron (NC 2L = 300 uq/L) o MW-2 @ 1.5 ug/L o P-3 @ 3,600 ug/L o MW-6 @ 2.8 ug/L o MW-2 @ 19,000 ug/L o MW-7S @ 1.2 ug/L o MW-3 @ 4,700 ug/L o MW-8 @ 1.6 ug/L o MW-4S @ 810 ug/L o MW-5 @ 35,000 ug/L Barium (NC 2L = 700 uq/L) o MW-6 @ 13,000 ug/L o MW-7S @ 790 ug/L o MW-8 @ 4,300 ug/L o AMW-1 @ 13,000 ug/L Cadmium (NC 2L = 2 uq/L) o AMW-2 @ 2,600 ug/L o P-3 @ 2.5 ug/L (J) Manganese (NC 2L = 50 uq/L) Cobalt (NC 2L = 1 uq/L) o P-3 @ 390 ug/L o P-3 @ 2.3 ug/L (J) o MW-2 @ 6,900 ug/L o MW-2 @ 7.3 ug/L (J) o MW-3 @ 150 ug/L o MW-3 @ 2.2 ug/L (J) o MW-5 @ 1,300 ug/L o MW-6 @ 14.0 ug/L o MW-6 @ 4,800 ug/L o MW-8 @ 9.5 ug/L (J) o MW-7S @ 180 ug/L o AMW-1 @ 9.5 ug/L (J) o MW-8 @ 34,000 ug/L o AMW-2 @ 9.3 ug/L (J) o AMW-1 @ 5,800 ug/L o AMW-2 @ 2,700 ug/L WSP USA Inc. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 5 of 5 Total Dissolved Solids (NC 2L = ➢ Vanadium (NC 2L = 7 uq/L) 500 m /L) o P-3 @ 11.0 ug/L o MW-2 @ 1,200 mg/L o MW-7S @ 9.3 ug/L (J) o MW-4S @ 840 mg/L o MW-6 @ 1,700 mg/L ➢ 1,4-Dioxane (Human Health = 0.35 o MW-8 @ 1,500 mg/L uq/L) o AMW-1 @ 840 mg/L o SW-3 @ 1.7 ug/L — upstream o AMW-2 @ 810 mg/L o SW-2 @ 1.4 ug/L o SW-4 @ 2.0 ug/L 1,4-Dioxane (NC 2L = 3 uq/L) o SW-5 @ 14 ug/L o MW-2 @ 41 ug/L o SW-6 @ 2.1 ug/L o MW-6 @ 140 ug/L o MW-7S @ 23 ug/L ➢ Cobalt (Human Health = 0.40 o MW-8 @ 58 ug/L u /L o AMW-1 @ 23 ug/L o SW-5 @ 15.0 ug/L o AMW-2 @ 54 ug/L Y Copper (Freshwater Chronic SW Y Vinyl Chloride (NC 2L = 0.03 uq/L) standard; SW-1 = 4.09 ug/L) o MW-8 @ 0.96 ug/L (J) o SW-1 @ 5.0 ug/L (J) NTT 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). Y Antimony: first time detection in SW-5, SW-6 Y Vanadium: first time detection in AMW-1, AMW-2, P-3, SW-5 Y Toluene: first time detection in MW-6 v Iron: 5X historical concentration in P-3 v Acetone: first time detection in SW-5 (B), SW-6 (B) NTT Other report issues/Communications with laboratory/etc.: v Contacted the lab on March 28, 2023, to correct the following issues: o Alkalinity reported on J1606-1 (additional) report o Incorrectly reported alkalinity, chloride, sulfate, TDS, for P-3 J1606-1 (not on COC) o Chloride reported on the wrong report (J1606-1) should be on J1612-1 APPENDIX C USGS National Geochemical Survey Database Summary April 2023 APPENDIX C USGS National Geochemical Survey Database Summary Waste Industries of High Point Construction and Demolition Landfill, Permit No. 41-16 Guilford County, North Carolina 31405795.004 NURE Record ID Lab ID Collection Date Datum Latitude Longitude Medium Source Units Cobalt 5289485 C-110775 07/21/76 NAD27 36.2239 -80.0316 Sediment Stream ppm 8 5289485 C-110871 07/21/76 NAD27 36.2239 -80.0316 Sediment Stream ppm 8 5299850 C-210800 07/23/76 NAD27 36.1404 -79.8577 Sediment Stream ppm 15 5282810 C-110092 09/12/76 NAD27 35.9952 -80.2418 Sediment Stream ppm <2 5282670 C-110270 09/09/76 NAD27 35.9945 -80.0553 Sediment Stream ppm 12 5286508 C-143285 07/21/76 NAD27 35.9839 -79.8933 Sediment Stream ppm 19 5299838 C-210846 07/22/17 NAD27 36.0091 -79.6967 Sediment Stream ppm 12 5282822 C-110100 09/12/76 NAD27 35.9098 -80.214 Sediment Stream ppm <2 5286506 C-110103 07/20/76 NAD27 35.9408 -79.9033 Sediment Stream ppm 6 5286506 C-110855 07/20/76 NAD27 35.9408 -79.9033 Sediment Stream ppm 6 5286519 C-143841 07/22/76 NAD27 35.9399 -79.6065 Sediment Stream ppm 4 5287114 C-143617 12/01/76 NAD27 35.805 -79.9971 Sediment Stream ppm 18 5287156 C-143520 12/05/76 NAD27 35.7936 -79.7273 Sediment Stream ppm 16 5282722 C-210888 09/10/76 NAD27 35.7553 -80.0672 Sediment Stream ppm 24 Average 11 Notes: 1. NURE = National Uranium Resource Evaluation 2. ID = identification 3. ND = non -detect 4. Inorganic analysis performed by ICP40. 5. ppm = parts per million 6. Sample locations are within 25 miles of the Henderson County MSW Landfill 7. Source of data is the United States Geological Survey National Geochemical Survey Database. 1 of 1 INs I )