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Home My WebLink AboutAS-1025_11200_CA_MRP_20231110 Via Email November 10, 2023 NC Department of Environmental Quality Division of Waste Management - Underground Storage Tanks 2090 U.S. 70 Highway Swannanoa, NC 28778 Attention: Ms. Katie Bernal, PG Re: Groundwater Monitoring Report - Revision 1 NC DOT Maintenance Facility 5426 NC 141 Marble, North Carolina DEQ Incident No. 11200 H&H Job No. DOT-470 Dear Katie, On behalf of the North Carolina Department of Transportation (NC DOT), Hart & Hickman, PC (H&H) is submitting the attached PDF copy of the revised Groundwater Monitoring Report for the NC DOT Maintenance Facility located in Marble, Cherokee County, North Carolina. If you have any questions, please do not hesitate to contact us at (704) 586-0007. Sincerely, Hart & Hickman, PC David Graham , PG Matt Bramblett, PE Senior Project Geologist Principal Attachment Cc: Mr. Jeff Walston, NC DOT (via email) Ms. Jennifer Parish, NC DOT (via email) Groundwater Monitoring Report Revision 1 NC DOT Maintenance Facility Marble, North Carolina NC DEQ Incident Number: 11200 H&H Job No. DOT-470 November 10, 2023 Groundwater Monitoring Report Information Site Location: NC DOT Marble Maintenance Facility 5426 NC 141 Marble, North Carolina 28905 Property Owner: North Carolina Department of Transportation – Fleet and Material Management Unit 4809 Beryl Road Raleigh, North Carolina 27606 Attn: Mr. Jeff Walston, PE (919) 707-2944 Consultant Information: Hart & Hickman, PC 2923 South Tryon Street, Suite 100 Charlotte, North Carolina 28203 Attn: Mr. David Graham, PG – Senior Project Geologist (704) 586-0007 General Site Information: NC DEQ Incident Number: 11200 NC DEQ Risk Classification: High Latitude/Longitude: 35o 08’ 24” N 83o 55’ 31” W (Approximate) Release Discovery Date(s): February 1993 (4 former USTs) February 1993 (USTs and/or product lines) Estimated Quantity of Release: Unknown Cause/Source of Release: Gasoline and Diesel USTs i https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc Groundwater Monitoring Report NC DOT Maintenance Facility Marble, North Carolina H&H Job No. DOT-470 Table of Contents Section Page No. 1.0 Introduction .............................................................................................................................1 2.0 Site History ..............................................................................................................................2 3.0 Geology and Hydrogeology ....................................................................................................6 3.1 Regional Geology and Hydrogeology ...................................................................................6 3.2 Site Geology and Hydrogeology ...........................................................................................7 4.0 Water Supply Wells .................................................................................................................8 5.0 Groundwater Monitoring ........................................................................................................9 5.1 Monitoring Wells and Water Levels ......................................................................................9 5.2 Sample Collection Procedures and Analysis ..........................................................................9 5.3 Groundwater Sampling and Results .......................................................................................9 6.0 Summary and Certification .................................................................................................12 ii https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc List of Tables Table 1 Summary of Known Water Supply Wells Table 2 Summary of Groundwater Analytical Data Table 3 Summary of Monitoring Well Groundwater Elevation and Construction Information Table 4 Natural Attenuation Parameters List of Figures Figure 1 Site Location Map Figure 2 Site Map and Cross Section Layout Figure 3 Water Supply Well Location Map Figure 4 Generalized Cross Section (A-A’) Figure 5 Generalized Cross Section (B-B’) Figure 6 Groundwater Potentiometric Surface Map – August 2023 Figure 7 Groundwater Contaminant Concentration Map – August 2023 List of Appendices Appendix A 1994 CSA Addendum - Figure 2 Appendix B Boring Logs and Well Construction Records Appendix C Laboratory Analytical Data Sheets Appendix D Groundwater Sampling Forms Appendix E Historical Groundwater Results 1 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc Groundwater Monitoring Report NC DOT Maintenance Facility Marble, North Carolina H&H Job No. DOT-470 1.0 Introduction This groundwater monitoring report documents groundwater monitoring activities performed at the North Carolina Department of Transportation (NC DOT) maintenance facility located at 5426 NC 141 in Marble, Cherokee County, North Carolina. A site location map is included as Figure 1, and a site map is included as Figure 2. A release was discovered at the site when four former petroleum underground storage tanks (USTs) and dispensers were removed in February 1993. This release was the result of leaks from the USTs and dispenser piping. Contaminated soil in the excavation area was removed and disposed. The North Carolina Department of Environmental Quality (NC DEQ) has assigned the site a High Risk designation due to the close proximity of water supply wells and lack of available municipal water supply. The DEQ incident number is 11200. The recent assessment work conducted for NC DOT included the following tasks:  Groundwater Monitoring o Sampling of select water supply wells (WS-1, WS-2, WS-3, and WS-18 [Keller Well]) o Sampling of on-site monitoring wells (MW-1, MW-2, MW-4 through MW-13, DW-1, and DW-2)  Data Evaluation and Reporting 2 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc 2.0 Site History In December 1992, NC DOT removed one (1) 500-gallon waste oil tank and one (1) 1,000- gallon kerosene tank from the site. In February 1993, additional tanks were removed including two (2) 10,000-gallon gasoline tanks, one (1) 10,000-gallon diesel tank, and one (1) 1,000-gallon kerosene tank. Analytical results of soil samples collected from the base of the USTs and fuel dispensers indicated total petroleum hydrocarbons (TPH) diesel-range organics (DRO) and gasoline-range organics (GRO) detections of 851 mg/kg and 2,742 mg/kg, respectively. Approximately 150 cubic yards of soil were excavated and stockpiled at the site. In 1993, a Comprehensive Site Assessment (CSA) was submitted by Soil & Materials Engineering (S&ME). Soil samples from eleven soil borings (MW-1 through MW-5 and SB-1 through SB-6) were analyzed for TPH GRO and DRO. Two soil samples (MW-1 and MW-2) exceeded NC DEQ Action Levels for TPH. MW-1 through MW-5 were completed as Type II monitoring wells, and one Type III deeper monitoring well (MW-6) was installed. Groundwater samples collected from MW-1, MW-5, and MW-6 contained petroleum impacts, and MW-2 contained approximately 12 inches of free product. The CSA report suggested the possibility of two separate plumes onsite, and an additional three monitoring wells (MW-7 through MW-9) were installed in December 1993. Benzene, toluene, ethylbenzene, and xylenes (BTEX) were detected at a concentration of 27,120 µg/L in MW-8. S&ME submitted a Corrective Action Plan (CAP) in May 1995, which specified an air sparging and vacuum extraction system. The CAP later changed to a groundwater pump and treat system after pilot tests indicated air sparging and vacuum extraction were not applicable remedial alternatives at the site. In the summer of 1997, Front Royal Environmental Services installed a pump and treat system with six recovery wells with a treatment system containing an oil-water separator (OWS), a stacked-tray aeration unit, and carbon filtration vessels. Records indicate that the pump and treat system was connected to six (6) recovery wells (RW-1 through RW-6). A National Pollutant Discharge Elimination System (NPDES) permit associated with the system (permit number NCG510362) was effective on March 27, 1997. 3 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc H&H conducted an evaluation of the former pump and treat system in 2017. The system building had become dilapidated. The system had been inactive for several years and was in need of major repair. H&H was unable to verify if the system was capable of operation. According to Charles Weaver with the North Carolina Department of Water Resources, the NPDES permit was rescinded in 2017. At NC DOT’s request, H&H decommissioned, removed, and disposed of the remediation system building and its components in December 2021. The recovery wells were left in place for future use (if needed). There are eighteen (18) water supply wells near the site. The DOT maintenance yard has three water supply wells onsite. Water supply well (WS-1) is located on the northwest side of the site, approximately 300 feet cross-gradient from the former UST basin (source area) and is connected to a spigot located inside the wash house. H&H verified that WS-1 is used as a non-potable water supply well only. Water supply well (WS-2) was formerly located at the east end of the wash house. WS-2 replaced with a new water supply well (WS-2) approximately 800 feet southeast and hydrologically cross-gradient from the source area. WS-2 was thought to be abandoned in 1997. However, H&H identified an inactive water supply well near the former wash house during recent groundwater sampling activities in February 2023. The former WS-2 is discussed further below. Water supply well (WS-3) is located behind a warehouse on the northeastern portion of the site, approximately 275 feet upgradient of the source area. During a site visit on May 16, 2017, H&H found WS-3 to still be in operation as a non-potable water supply. The nearest water supply well used for drinking water, WS-18 (Keller Well), is situated approximately 600 feet from the source area. WS-18 (Keller Well) has been sampled for volatile organic compounds (VOCs) multiple times, and no impacts have been detected in the well. At the request of NC DEQ, semi-annual groundwater monitoring events were conducted periodically from 1993 through 2021. Because petroleum impacted groundwater was not fully delineated at the site, and at the request of NC DEQ, H&H conducted additional groundwater assessment activities at the site in December 2021 and July 2022 to evaluate the potential to lower the site risk and obtain incident closure. 4 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc The December 2021 groundwater assessment activities were initiated based on conversations among H&H, NC DOT, and the NC DEQ Incident Manger, Kristin Moyle, to attempt to lower the site risk and achieve incident closure by demonstrating that groundwater impacts at the site will not reach nearby water supply wells via groundwater modeling. As noted above, there are 18 water supply wells near the site including the three non-potable wells located on the site property. The four closest drinking water supply wells are located approximately 500 to 600 ft from the site. The Keller well (WS-18) located to the west and generally topographically downgradient of the groundwater contaminant plume. A summary of water supply well information is included in Table 1, and water supply well locations are shown on Figure 3. Based on the proximity of area water supply wells and the lack of plume delineation, H&H installed additional monitoring wells to further evaluate groundwater impacts at the site. Four Type II monitoring wells (MW-10 through MW-13) and two Type III monitoring wells (DW-1 and DW-2) were installed in December 2021 and July 2022 to delineate the horizontal and vertical extent of petroleum impacted groundwater. Based on petroleum impacts in groundwater above the 2L Standards detected in monitoring well MW-10; the low-level petroleum impacts in downgradient perimeter monitoring well MW-11 (between the source area and WS-18 Keller water supply well) and MW-12; only limited data for the new downgradient wells (MW-10 through MW-13); and discussions between H&H and NC DEQ, H&H recommended collecting more data from these wells to determine the potential for seasonal fluctuations in groundwater analytical data and to evaluate plume stability (i.e. stable, increasing/decreasing trends, etc.) prior to conducting groundwater modeling for the site. In H&H’s Groundwater Assessment and Monitoring Report dated October 28, 2022, H&H recommended conducting two additional comprehensive groundwater monitoring events in February and August 2023 to further evaluate groundwater impacts, plume stability, and the potential to successfully use groundwater modeling at the site. In NC DEQ Notice of Regulatory Requirements (NORR) letter dated November 3, 2022, NCDEQ concurred with continued groundwater monitoring at the site. 5 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc Pursuant to an email request from NC DEQ’s Incident Manager, Mr. Brett Engard, dated November 3, 2022, and subsequent discussion with H&H, H&H searched for compliance wells S103j2 and S103j3 and former water supply well (WS-2) located adjacent to the former wash house that were identified in the 1994 CSA Addendum report for this Incident (see Figure 2 from the 1994 CSA Addendum in Appendix A). H&H identified compliance well S103j2 during groundwater sampling activities in February 2023. However, we were unable to locate compliance well S103j3. Compliance well S103j2 is constructed of 2-inch diameter PVC to a total depth of approximately 49 ft below ground surface (bgs). No well tag was identified near the well. H&H also identified a 6-inch diameter PVC pipe that was cut off and capped (with a PVC cap) near surface grade adjacent to the former wash house. The PVC pipe appears to be the former water supply well WS-2 that was thought to have been abandoned. H&H staff measured the total depth of the well during the August 2023 sampling event. The total depth of the well appeared to be approximately 165 ft bgs. The depth to water was measured in WS-2 to be approximately 47 ft bgs. No piping or pumps were identified near the well. The inactive water supply well WS-2 should be properly abandoned unless it will be used in the future. The locations of compliance well S103j2 and WS-2 are shown on Figure 2. Groundwater monitoring activities and results from the August 2023 groundwater sampling event are discussed below. 6 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc 3.0 Geology and Hydrogeology 3.1 Regional Geology and Hydrogeology The subject property is located within the Blue Ridge Physiographic Province of North Carolina (Blue Ridge). The Blue Ridge is generally characterized by steep mountain ridges, intermontane basins, and trench valleys that intersect. According to the Geologic Map of North Carolina (1985), the bedrock in the vicinity of the subject site is composed of Late Proterozoic age metamorphic rocks including schists, phyllite, and marble. In the Blue Ridge, the bedrock is overlain by a mantle of weathered rock termed saprolite or residuum. The saprolite consists of unconsolidated clay, silt, and sand with lesser amounts of rock fragments. Due to the range of parent rock types and their variable susceptibility to weathering, the saprolite ranges widely in color, texture, and thickness. Generally, the saprolite is thickest near interstream divides and thins toward stream beds. In profile, the saprolite normally grades from clayey soils near the land surface to highly weathered rock above competent bedrock. The occurrence and movement of groundwater in the Blue Ridge is within two separate but interconnected water-bearing zones. A shallow water-bearing zone occurs within the saprolite, and a deeper water-bearing zone occurs within the underlying bedrock. Groundwater in the shallow saprolite zone occurs in the interstitial pore spaces between the grains comprising the saprolitic soils, and is typically under water table or unconfined conditions. Groundwater movement is generally lateral from recharge areas to small streams that serve as localized discharge points. The occurrence and movement of groundwater in the underlying water-bearing zone within the bedrock is controlled by secondary joints, fractures, and faults within the bedrock. On a regional scale, the direction of groundwater flow is typically from uplands to major streams and ground water sinks. The saprolite has a higher porosity than the bedrock and serves as a reservoir that 7 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc supplies water to a network of fractures in the bedrock. PWR (phyllite) was encountered at 10 ft below ground surface (bgs) in monitoring well MW-10. Phyllite is generally a soft rock, and it is difficult to distinguish competent phyllite from weathered phyllite during drilling at the site. In general, the degree of rock weathering decreases with depth. Therefore, we refer to the bedrock aquifer geology as PWR/bedrock. 3.2 Site Geology and Hydrogeology Based on field observations during recent drilling activities conducted between 2021 and 2022 by H&H and boring logs and well construction records (provided by NC DEQ) from monitoring wells installed at the site in the 1990’s by others, soils encountered in the vicinity of monitoring wells generally consist of red, brown, orange, and gray sandy and clayey silts. PWR/bedrock (phyllite) was encountered at various depths across the site. More competent PWR or bedrock was encountered near 85 ft bgs in monitoring well borings DW-1 and DW-2; at various depths ranging from 5 ft bgs to 20 ft bgs in monitoring wells MW-1 through MW-5; and approximately 14 ft bgs to 18 ft bgs in downgradient monitoring well borings MW-11 though MW-13. The topography drops sharply from DW-2 to downgradient wells MW-11 through MW-13 which may explain the rock depth variability. Cross-section locations are provided on Figure 2, and generalized geologic cross-sections are included as Figure 4 and Figure 5. The cross sections were prepared using limited historical data from the 1990’s and data from recent drilling activities in 2021 and 2022. Available monitoring well boring logs and well construction records are included in Appendix B. During the December 2021 and July 2022 groundwater sampling events, hydraulic conductivity tests (slug tests) were performed in monitoring wells MW-2, MW-5, MW-6, MW-10, MW-11, MW-13, DW-1, and DW-2. Based on the mean horizontal gradient of 0.051 ft/ft for shallow and deeper wells at the site, hydraulic conductivity of 0.78 ft/day, and assumed porosity of 0.10, the average horizontal groundwater velocity where monitoring wells MW-2, MW-5, MW-6, MW- 10, MW-11, MW-13, DW-1, and DW-2 are located is estimated to be approximately 0.40 ft/day (approximately 146 feet/year). 8 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc 4.0 Water Supply Wells On August 9, 2023, H&H personnel sampled four water supply wells WS-1, WS-2, WS-3, and WS-18 (Keller Well) (Figure 3). WS-1, WS-2, and WS-3 are located at the DOT maintenance facility and are used for non-potable water supply only. WS-18 (Keller Well) is privately owned and is used to supply drinking water to three residences located west of the site. WS-1, WS-2, and WS-3 are located approximately 300 ft northwest, 800 ft southeast, and 275 feet northwest of the UST area, respectively, and are sampled on a semi-annual basis. The WS-18 (Keller Well) is located approximately 600 ft west of the UST area and is also sampled on a semi-annual basis. In NC DEQ NORR letter dated November 3, 2022, NC DEQ requested that water supply well WS-8 located west and downgradient of the site also be sampled. However, based on discussions between H&H and the property owner for WS-18, there are no water supply wells on the properties where WS-7 and WS-8 are identified on Figure 3. These properties are also supplied water from WS-18. Municipal water supply is not available in the area. Water supply well information for wells near the site is listed in Table 1. Prior to sampling, water supply wells WS-1, WS-2, WS-3, and the WS-18 (Keller Well) were allowed to flow for approximately fifteen minutes. Samples were then collected into laboratory supplied sample containers and submitted to a North Carolina Certified Laboratory for analysis of VOCs by SM 6200B. No VOCs were detected in WS-1, WS-2, and WS-18 (Keller Well). A low level concentration of methyl tert-butyl ether (MTBE) (0.63 ug/L) was detected in WS-3 below the 2L Standard of 20 ug/L. Historical water supply well analytical results are included in Table 2. The laboratory analytical reports are included in Appendix C. 9 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc 5.0 Groundwater Monitoring 5.1 Monitoring Wells and Water Levels The monitoring well network at the site consists of 14 monitoring wells. Monitoring wells MW- 1, MW-2, MW-4 through MW-13, DW-1, and DW-2 were sampled during the August 2023 sampling event. H&H has attempted to locate MW-3 since 2017. However, it cannot be located and is considered destroyed or abandoned. An electronic water level indicator was used to record the static water levels in the monitoring wells on August 7, 2023. The recent August groundwater elevation data indicate water levels for Type II monitoring wells ranged from approximately 21.93 ft (MW-12) to 46.89 ft (MW-10) below top of well casings, and no free product was detected. Table 3 includes a summary of well construction information and the August 2023 groundwater elevation data. The estimated potentiometric surface from August 2023 is depicted on Figure 6. As shown on Figure 6, the potentiometric surface generally flows to the southwest and south. The shallow hydraulic gradient near the source area from monitoring well MW-2 to monitoring well MW-9 is approximately 0.05 ft/ft. 5.2 Sample Collection Procedures and Analysis During the groundwater sampling event, laboratory-supplied sample bottles were used for sample collection. A chain-of-custody record was completed for samples collected and included sample description, date collected, time collected, matrix, sample container information, and analyses required. A chain-of-custody was signed by H&H prior to submitting the samples to the laboratory. Pace Analytical Services, LLC, a North Carolina certified laboratory, analyzed the samples. Groundwater samples were analyzed for VOCs by SM 6200B. Laboratory analytical data sheets are provided in Appendix C. 5.3 Groundwater Sampling and Results After monitoring wells were gauged for depth to water, the wells were purged and sampled using new dedicated 2-inch diameter polyethylene bailers. H&H recorded pH, temperature, oxidation 10 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc reduction potential (ORP), specific conductivity, dissolved oxygen (DO), and turbidity measurements in the field using a YSI Pro Plus and Hach 2100Q Turbidimeter. Once pH, temperature, and conductivity stabilized, a groundwater sample was collected from each monitoring well for laboratory analysis. Field parameter data for the August 2023 sampling event and other recent sampling events are summarized in Table 4. Groundwater sampling forms are included in Appendix D. Laboratory analytical results from the August 2023 groundwater sampling event indicate petroleum-related impacts were detected above 2L Standards in monitoring wells MW-2, MW-5, MW-8, and MW-10. Compounds detected above the NC 2L Standards included benzene, diisopropyl ether, MTBE, naphthalene, n-propylbenzene, 1,2,4-trimethylbenzene (1,2,4-TMB), and/or xylenes. Petroleum impacted groundwater extends from the former UST basin primarily to the southwest. The highest benzene concentrations in shallow groundwater were detected in monitoring wells MW-8 and MW-10 located downgradient and southwest of the source area and in MW-2 located near the source area. Petroleum-related constituent concentrations above the 2L Standards in monitoring wells MW-2, MW-5, MW-8, and MW-10 are summarized below:  Benzene (183 µg/L, 2.0 µg/L, 2,180 µg/L, 202 µg/L) exceeded the 2L Standard (1 µg/L) in wells MW-2, MW-5, MW-8, and MW-10, respectively.  Diisopropyl ether (612 µg/L) exceeded the 2L Standard (70 µg/L) in well MW-8.  MTBE (321 µg/L and 46.1 µg/L) exceeded the 2L Standard (20 µg/L) in wells MW-8 and MW-10, respectively.  Naphthalene (224 µg/L, 629 µg/L, and 439 µg/L) exceeded the 2L Standard (6 µg/L) in wells MW-2, MW-8, and MW-10, respectively.  n-Propylbenzene (145 µg/L and 154 µg/L) exceeded the 2L Standard (70 µg/L) in wells MW-8 and MW-10, respectively.  1,2,4-TMB (515 µg/L and 978 µg/L) exceeded the 2L Standard (400 µg/L) in wells MW- 8 and MW-10 respectively.  Total xylenes (692 µg/L and 684 µg/L) exceeded the 2L Standard (500 µg/L) in wells MW-8 and MW-10, respectively. 11 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc No VOCs were detected above Gross Contamination Levels (GCLs). Low level concentrations of various petroleum-related VOCs were also detected in Type II monitoring wells MW-1, MW-6, MW-7, MW-11, MW-12, and MW-13 at concentrations below the 2L Standards. Monitoring wells MW-11 and MW-12 are the most downgradient wells. MW-11 is the closest monitoring well to water supply well WS-18 (Keller well). No VOCs were detected in Type II monitoring wells MW-4 and MW-9. A low-level concentration of MTBE was detected in Type III well DW-1 below the 2L Standard, and no VOCs were detected in Type III well DW-2. DW-1 and DW-2 are screened at intervals below 100 ft bgs. In general, the August 2023 groundwater analytical data are consistent with the February 2023 analytical data. VOCs were slightly lower in MW-2 and MW-5 compared to the February 2023 data. Excluding recently installed monitoring wells MW-10 through MW-13, DW-1 and DW-2, historical analytical results indicate contaminant concentrations have generally decreased over time with the exception of MW-8 which is slightly downgradient of the source area. Concentrations in MW-8 have generally been stable since 2017. Concentrations are generally stable in monitoring wells MW-10, MW-11, and MW-12. However, benzene concentrations have slightly increased in monitoring well MW-11 (upgradient of WS-18 Keller well) since the July 2022 sampling event. The detected benzene concentrations in MW-11 are slightly below the 2L Standard. The August 2023 groundwater concentrations and the estimated plume extent are shown on Figure 7. A summary of historical groundwater analytical data including the August 2023 sampling event is provided in Table 2. Historical monitoring well analytical data (prior to 2017) are included in Appendix E. 12 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc 6.0 Summary and Certification H&H has completed groundwater monitoring activities at the NC DOT Maintenance Facility in Marble, North Carolina. The findings are summarized below.  Water supply wells WS-1, WS-2, WS-3 and WS-18 (Keller Well) were sampled during the August 2023 groundwater sampling event. WS-18 (Keller well) is downgradient of the plume. No VOCs were detected in water supply wells WS-1, WS-2, and WS-18 (Keller Well). A low-level concentration of MTBE was detected in on-site non-potable well WS-3 below the 2L Standard.  Inactive former water supply well WS-2 near the former wash house should be properly abandoned in accordance with 2C Well Construction Standards, if it will not be used in the future.  Fourteen on-site monitoring wells were sampled for VOCs in August 2023. Groundwater analytical results from the August 2023 sampling event indicate petroleum-related impacts above 2L Standards in monitoring wells MW-2, MW-5, MW-8, and MW-10. Compounds detected above the NC 2L Standards included benzene, diisopropyl ether, MTBE, naphthalene, n-propylbenzene, 1,2,4-TMB, and xylenes. Low level concentrations of various petroleum-related VOCs were also detected in monitoring wells MW-1, MW-6, MW-7, MW-11, MW-12, and MW-13 at concentrations below the 2L Standards. Monitoring wells MW-11 and MW-12 are the most downgradient wells. MW-11 is the closest monitoring well to water supply well WS-18 (Keller well). No VOCs were detected in monitoring wells MW-4 and MW-9. A low level concentration of MTBE was detected in Type III well DW-1 below the 2L Standard, and no VOCs were detected in Type III well DW-2. DW-1 and DW-2 are screened at intervals below 100 ft bgs. Due to the petroleum impacts in groundwater above the 2L Standards detected in monitoring 13 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/AS_1025_11200_CA_MRP_20231110_Monitoring Report Rev 1.doc wells MW-8 and MW-10, the low-level petroleum impacts in downgradient perimeter monitoring well MW-11 (between the source area and WS-18 Keller water supply well) and also MW-12, and the slight increase in benzene concentrations in MW-11, groundwater modeling does not appear to be a viable option for lowering the site risk and closing out this UST Incident at this time. H&H recommends active remediation be conducted to remediate impacted groundwater at the site. Based on discussions with NC DEQ and because groundwater remedial activities were previously conducted at the site using pump and treat technology, H&H recommends conducting bioremediation via injections to reduce petroleum concentrations in groundwater at the site. The goal will be to target the remediation in the plume area with higher concentrations such that the entire plume can attenuate. Prior to conducting a feasibility study for potential injection activities, additional groundwater assessment activities should be conducted downgradient of the source area to better define groundwater impacts and the target area for injection. H&H recommends installation of two Type II monitoring wells to bracket the water table near the center of the petroleum impacted groundwater plume between monitoring wells MW-8 and MW-10. A comprehensive groundwater monitoring event should then be conducted to include field parameters that may be required for evaluating potential injections and pilot testing. Additionally, because municipal water is not available in the area and source area groundwater concentrations are above 2L Standards, the three on-site water supply wells, and the Keller Well should also continue to be sampled on a semi-annual basis. The next semi-annual sampling event is February 2024. Depending on schedule, water supply well sampling may be conducted during the recommended comprehensive groundwater sampling event noted above. Table 1 (Page 1 of 2) Summary of Known Water Supply Wells NC DOT Maintenance Facility Marble, North Carolina H&H Job No. DOT-470 Depth Use WS-1 NC DOT 1501 Mail Service Center Raleigh, NC 27699 5426 HWY 141 Marble, NC 28905 552400811913000 Unknown None Yes, Non-potable water only 1-office building, 1- equipment shed, 1 shelter, 1- maintenance building, 1-gas house onsite 300 No WS-2 NC DOT 1501 Mail Service Center Raleigh, NC 27699 5426 HWY 141 Marble, NC 28905 552400811913000 Unknown None Yes, Non-potable water only 1-office building, 1- equipment shed, 1 shelter, 1- maintenance building, 1-gas house onsite 750 No Former WS-2 NC DOT 1501 Mail Service Center Raleigh, NC 27699 5426 HWY 141 Marble, NC 28905 552400811913000 165 None Inactive 1-office building, 1- equipment shed, 1 shelter, 1- maintenance building, 1-gas house onsite 160 No WS-3 NC DOT 1501 Mail Service Center Raleigh, NC 27699 5426 HWY 141 Marble, NC 28905 552400811913000 Unknown None Yes, Non-potable water only 1-office building, 1- equipment shed, 1 shelter, 1- maintenance building, 1-gas house onsite 275 No WS-4 Greg Huskins PO Box 802 Marble, NC 28905 5560 & 5572 HWY 141 Marble, NC 28905 552400825458000 Unknown Drinking Yes 1-maintenance building, 3-equipment sheds 600 No WS-5 Brenda Huskins PO Box 517 Marble, NC 28905 5530 HWY 141 Marble, NC 28905 552400825346000 Unknown Drinking Yes 1-one story residence building, 2-sheds 700 No WS-6 Brandon Shane Huskins PO Box 2215 Sylva, NC 28779 5612 HWY 141 Marble, NC 28905 552400826788000 Unknown Drinking Yes 1-one story residence building, 1-shed 1000 No WS-7 Jacob & Darla Hicks 5290 HWY 141 Marble, NC 28905 5290 HWY 141 Marble, NC 28905 552400711694000 NA NA Not Present *1-one story residence building, 2-sheds NA No WS-8 Mary Ruth Keller & Phillip Isaac Keller 5374 HWY 141 Marble, NC 28905 5390 HWY 141 Marble, NC 28905 552400609457000 NA NA Not Present*1-one story residence building NA No WS-9 William John & Glenna Sue Stockton 5373 HWY 141 Marble, NC 28905 5373 HWY 141 Marble, NC 28905 552400721070000 Unknown Drinking No 1-residence building, 5- sheds 750 No Notes: NA = not applicable * = In February 2023, the property owner for WS-18 indicated that there are no water supply wells where WS-7 and WS-8 were previsouly indicated. These properties are supplied water from WS-18. Jackson County Water Account?Additional Information Approximate Distance From Source Area of Release (ft) Confirmed Usage May 2017ID Property Owner Mailing Address Physical Address Parcel Number Well Details https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/Tables/Marble Tables_092023 9/26/2023 Table 1 (Page 1 of Page 2) Hart & Hickman, PC Table 1 (Page 2 of 2) Summary of Known Water Supply Wells NC DOT Maintenance Facility Marble, North Carolina H&H Job No. DOT-470 Depth Use WS-10 David Richard Lunsford 5385 HWY 141 Marble, NC 28905 5385 HWY 141 Marble, NC 28905 552400723163000 Unknown Drinking No 1-two story residence building, 1-shed 500 No WS-11 Alan Glenn & Nancy Crooks 150 Long Branch Rd Marble, NC 28905 150 Long Branch Rd Marble, NC 28905 552400721474000 Unknown Drinking No 1-two story residence building, 1-shed 900 No WS-12 Joan Hall 6540 HWY 325 Blairsville, GA 30512 88 Long Branch Rd Marble, NC 28905 552400722588000 Unknown Drinking No 1-two story residence building 850 No WS-13 Junior & Kim McGaha 134 Swan St Andrews, NC 28901 62 Long Branch Rd Marble, NC 28905 552400724525000 Unknown Drinking No 1-two story residence building, 1-shed 750 No WS-14 Larry Huskins PO Box 145 Marble, NC 28905 5557 HWY 141 Marble, NC 28905 552400738230000 Unknown Drinking No 1-two story residence building 750 No WS-15 Larry Huskins PO Box 145 Marble, NC 28905 5555 HWY 141 Marble, NC 28905 552400738230000 Unknown Drinking No 1-two story residence building, 3-sheds 975 No WS-16 Mt. Zion Baptist Church 5521 HWY 141 Marble, NC 28905 5521 HWY 141 Marble, NC 28905 552400820529000 Unknown Drinking No 1-two story building 600 No WS-17 Chance Tristan Rogers 9429 Blue Ridge HWY Blairsville, GA 30512 Unknown 552400825089000 Unknown Drinking No 1-one story building, 1- shed 750 No WS-18 Mary Ruth Keller & Phillip Isaac Keller 5374 HWY 141 Marble, NC 28905 5374 HWY 141 Marble, NC 28905 552400714830000 Unknown Drinking Yes Supplies 3 houses 600 No Notes: NA = not applicable * = In February 2023, the property owner for WS-18 indicated that there are no water supply wells where WS-7 and WS-8 were previsouly indicated. These properties are supplied water from WS-18. Approximate Distance From Source Area of Release (ft) Jackson County Water Account? Well Details Confirmed Usage May 2017 Additional InformationID Property Owner Mailing Address Physical Address Parcel Number https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/Tables/Marble Tables_092023 9/26/2023 Table 1 (Page 2 of Page 2) Hart & Hickman, PC Table 2 (Page 1 of 4) Summary of Groundwater Analytical Data NC DOT Maintenance Facility Marble, North Carolina H&H Job No. DOT-470 Be n z e n e Br o m o f o r m n- B u t y l b e n z e n e se c - B u t y l b e n z e n e Ch l o r o f o r m Ch l o r o m e t h a n e Dib r o m o c h l o r o m e t h a n e Dii s o p r o p y l e t h e r Et h y l b e n z e n e Is o p r o p y l b e n z e n e (C u m e n e ) Me t h y l - t e r t - b u t y l e t h e r Na p h t h a l e n e n- P r o p y l b e n z e n e St y r e n e Te t r a c h l o r o e t h e n e To l u e n e 1, 2 , 4 - T r i m e t h y l b e n z e n e 1, 3 , 5 - T r i m e t h y l b e n z e n e m& p - X y l e n e o- X y l e n e To t a l X y l e n e s 5/17/2017 <0.50 <0.50 <0.50 0.98 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 5.2 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/22/2023 <0.34 <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 <0.31 <0.30 <0.33 0.92 <0.64 <0.34 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/9/2023 <0.079 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 <0.072 <0.081 <0.11 1.1 <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 5/17/2017 1,630 <5.0 58.3 <5.0 <5.0 <10.0 <5.0 330 263 46.0 189 558 <5.0 44.7 <5.0 393 1,470 <5.0 1,380 490 1,870 2/8/2018 2,280 <6.2 <6.2 <6.2 <6.2 <12.5 <6.2 626 304 67.3 556 755 263 17.6 <6.2 149 2,120 <6.2 1,600 269 1,869 8/9/2018 994 <5.0 <5.0 <5.0 <5.0 <10.0 <5.0 198 244 37.4 104 443 151 30.9 <5.0 346 1,430 383 1,240 517 1,757 2/15/2019 659 <5.0 <5.0 <5.0 <5.0 <10.0 <5.0 134 211 34.8 74.1 385 120 30.4 <5.0 343 963 258 912 440 1,352 9/12/2019 896 <5.0 <5.0 <5.0 <50.0 <10.0 <5.0 242 247 41.6 146 458 <5.0 <5.0 <5.0 107 1,190 <5.0 944 276 1,220 2/26/2020 772 <5.0 <5.0 <5.0 <5.0 <10.0 <5.0 160 271 45.2 85.8 482 146 <5.0 <5.0 381 1,160 251 1,200 519 1,719 8/27/2020 487 <5.0 <5.0 <5.0 <5.0 <10.0 <5.0 80.4 183 34.9 38.9 374 121 14.6 <5.0 72.6 928 261 723 160 883 2/24/2021 407 <2.5 <2.5 <2.5 <2.5 <5.0 <2.5 79.1 158 30.8 39.5 275 <2.5 15.7 <2.5 81.8 713 <2.5 613 170 783 12/14/2021 435 <2.5 44.8 <2.5 <2.5 <5.0 <2.5 106 155 36.3 62.1 398 125 8.1 <2.5 25.7 768 205 555 66.9 622 7/19/2022 357 <2.5 <2.5 <2.5 <2.5 <5.0 <2.5 75.3 144 29.0 42.6 301 97.3 4.5 <2.5 21.4 598 163 454 55.8 510 2/21/2023 330 <1.7 <2.4 <2.0 <2.2 <2.7 <1.8 51.9 157 33.0 29.3 416 117 10.2 <1.5 53.4 633 167 543 147 690 8/8/2023 183 <0.79 <0.27 <0.34 <0.28 <0.70 <0.59 <0.29 99.7 20.9 16.5 224 69.4 2.2 <0.34 26.0 397 123 318 61.0 379 5/16/2017 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/21/2023 <0.34 <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 <0.31 <0.30 <0.33 <0.42 <0.64 <0.34 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/8/2023 <0.079 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 <0.072 <0.081 <0.11 <0.053 <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 5/16/2017 89.7 <1.0 <1.0 <1.0 <1.0 5.8 <1.0 224 62.0 3.3 123 36.8 <1.0 <1.0 <1.0 4.8 48.4 <1.0 81.2 9.5 90.7 2/8/2018 105 <1.0 <1.0 <1.0 <1.0 <2.0 <1.0 275 80.4 3.5 154 61.3 <1.0 <1.0 <1.0 6.7 42.7 <1.0 53.1 14.4 67.5 8/9/2018 265 <1.0 <1.0 <1.0 <1.0 <2.0 <1.0 325 281 7.8 161 123 19.7 <1.0 <1.0 7.9 207 <1.0 396 35.6 431.6 2/14/2019 142 <1.2 <1.2 <1.2 <1.2 <2.5 <1.2 323 105 4.9 192 71.7 11.1 <1.2 <1.2 10.2 115 20.1 196 19.2 215.2 9/11/2019 102 <0.50 <0.50 <0.50 <5.0 <1.0 <0.50 126 126 4.6 52.4 59.1 <0.50 <0.50 <0.50 5.8 87.1 <0.50 131 48.2 179.2 2/27/2020 91.8 <1.0 <1.0 <1.0 <1.0 <2.0 <1.0 331 34.6 2.4 201 31.1 4.5 <1.0 <1.0 4.9 25.9 2.7 33.0 7.8 40.8 8/27/2020 22.7 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 146 23.9 1.1 73.0 14.0 1.7 <0.50 <0.50 1.2 15.3 0.90 14.0 6.9 20.9 2/24/2021 91.9 <1.0 <1.0 <1.0 <1.0 <2.0 <1.0 196 73.4 3.4 118 62.1 <1.0 <1.0 <1.0 4.7 79.9 <1.0 66.6 14.9 81.5 12/14/2021 81.4 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 27.6 174 5.7 11.7 59.8 13.9 <0.50 <0.50 13.9 106 13.3 219 65.2 284 7/18/2022 90.7 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 155 145 3.4 71.2 28.3 5.2 <0.50 <0.50 6.4 38.9 7.8 150 27.9 178 2/21/2023 4.5 <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 14.8 9.1 <0.33 8.3 1.7 J 0.54 <0.29 <0.29 <0.24 1.9 <0.33 5.1 0.38 J 5.5 8/9/2023 2.0 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 8.4 3.3 <0.11 5.4 0.40 J <0.10 <0.14 <0.086 <0.090 1.9 <0.071 0.55 J 0.56 1.11 J 5/16/2017 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 11 <0.50 <0.50 6.9 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/8/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 20.2 <0.50 <0.50 11.8 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 8/9/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 20.1 <0.50 <0.50 11.6 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/14/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 10.2 <0.50 <0.50 6.6 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 9/11/2019 <0.50 <0.50 <0.50 <0.50 <5.0 <1.0 <0.50 20.9 <0.50 <0.50 7.6 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/26/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 15.3 <0.50 <0.50 8.8 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 8/27/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 11.7 <0.50 <0.50 7.0 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/24/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 9.9 <0.50 <0.50 6.4 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 12/13/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 12.6 <0.50 <0.50 7.2 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 7/19/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 9.4 <0.50 <0.50 4.2 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/21/2023 <0.34 <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 5.2 <0.30 <0.33 2.7 <0.64 <0.34 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/8/2023 <0.079 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 7.7 <0.081 <0.11 4.6 <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 1 4 70 70 70 3 0.4 70 600 70 20 6 70 70 0.70 600 400 400 NS NS 500 5,000 4,000 5,900 8,800 70,000 3,000 400 70,000 80,000 30,500 20,000 6,000 26,100 70,000 700 260,000 28,500 24,100 NS NS 50,000 Notes: 1) North Carolina Department of Environmental Quality (NC DEQ) 15A NCAC 02L.0202 Groundwater Standards (2L Standards) dated April 2022. 2) NC DEQ Gross Contamination Levels (GCLs) for Groundwater dated September 2022. Bold value exceeds the DEQ 2L Standard. Only compounds detected in at least one sample shown above. Laboratory analytical method shown in parentheses. VOCs = volatile organic compounds; µg/L = micrograms per liter; NA = not analyzed; ND = not detected; NS = not specified SM = Standard Methods for the Examination of Water and Wastewater * = Duplicate sample taken. J = Compound was detected above the laboratory method detection limit but below the laboratory reporting limit resulting in a laboratory estimated concentration. µg/L VOCs (SM 6200B) MW-1 MW-2 MW-4 MW-5 2L Standards (1) GCLs (2) Sa m p l e I D Sa m p l e D a t e MW-6 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/Tables/Marble Tables_092023 9/22/2023 Table 2 (Page 1 of Page 4) Hart & Hickman, PC Table 2 (Page 2 of 4) Summary of Groundwater Analytical Data NC DOT Maintenance Facility Marble, North Carolina H&H Job No. DOT-470 Be n z e n e Br o m o f o r m n- B u t y l b e n z e n e se c - B u t y l b e n z e n e Ch l o r o f o r m Ch l o r o m e t h a n e Dib r o m o c h l o r o m e t h a n e Dii s o p r o p y l e t h e r Et h y l b e n z e n e Is o p r o p y l b e n z e n e (C u m e n e ) Me t h y l - t e r t - b u t y l e t h e r Na p h t h a l e n e n- P r o p y l b e n z e n e St y r e n e Te t r a c h l o r o e t h e n e To l u e n e 1, 2 , 4 - T r i m e t h y l b e n z e n e 1, 3 , 5 - T r i m e t h y l b e n z e n e m& p - X y l e n e o- X y l e n e To t a l X y l e n e s 5/16/2017 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/8/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 8/9/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/14/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 9/11/2019 <0.50 <0.50 <0.50 <0.50 <5.0 <1.0 <0.50 <0.50 <0.50 <0.50 0.56 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/27/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 8/27/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/24/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 12/14/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 7/19/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/21/2023 <0.34 <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 <0.31 <0.30 <0.33 0.53 <0.64 <0.34 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/9/2023 <0.079 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 <0.072 <0.081 <0.11 0.41 J <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 5/17/2017 1,930 <6.2 <6.2 <6.2 <6.2 <12.5 <6.2 648 160 28.9 391 414 <6.2 17.3 <6.2 151 614 <6.2 498 235 733 2/8/2018 2,030 <6.2 <6.2 <6.2 <6.2 <12.5 <6.2 754 133 33.9 429 399 <6.2 15.5 7.6 141 425 <6.2 388 182 570 3/8/2018 1,970 <6.2 <6.2 <6.2 <6.2 <12.5 <6.2 715 128 34.1 448 411 <6.2 13.5 <6.2 93.1 464 <6.2 346 125 471 3/8/2018*1,940 <6.2 <6.2 <6.2 <6.2 <12.5 <6.2 699 129 33.0 435 397 <6.2 12.9 <6.2 97.1 435 <6.2 343 120 463 8/9/2018 1,930 <6.2 <6.2 <6.2 <6.2 <12.6 <6.3 641 195 28.5 304 383 <6.2 <6.2 <6.2 200 440 <6.2 454 100 554 2/14/2019 2,090 <6.2 <6.2 <6.2 <6.2 <12.5 <6.2 655 184 36.3 406 482 96.3 13.6 <6.2 169 399 105 447 147 594 9/11/2019 1,770 <6.2 <6.2 <6.2 <62.5 <12.5 <6.2 541 301 48.8 203 546 <6.2 18.9 <6.2 359 820 <6.2 891 340 1,231 2/27/2020 2,030 <6.2 <6.2 <6.2 <6.2 <12.5 <6.2 781 142 35.0 434 448 84.1 <6.2 <6.2 97.3 315 85.9 304 101 405 8/27/2020 2,270 <6.2 <6.2 <6.2 <6.2 <12.5 <6.2 644 283 38.7 317 515 108 <6.2 <6.2 388 531 131 714 267 981 2/25/2021 1,960 <6.2 <6.2 <6.2 <6.2 <12.5 <6.2 584 247 40.3 351 496 <6.2 8.4 <6.2 127 486 <6.2 567 156 723 12/14/2021 2,020 <6.2 32.6 <6.2 <6.2 <12.5 <6.2 657 337 41.8 300 540 130 <6.2 <6.2 275 652 151 757 155 912 7/18/2022 1,960 <6.2 <6.2 <6.2 <6.2 <12.5 <6.2 609 315 40.4 288 586 124 5.0 J <6.2 276 574 119 658 203 861 2/22/2023 1,450 <4.3 16.4 <5.0 <5.4 <6.8 <4.5 456 198 38.0 278 494 110 <3.6 <3.6 52.7 348 71.9 321 67.3 388 8/8/2023 2,180 <2.5 <0.83 <1.1 <0.86 <2.2 <1.8 612 334 52.2 321 629 145 3.4 J <1.1 150 515 92.0 585 107 692 5/16/2017 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/8/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 8/9/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/14/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 9/11/2019 <0.50 <0.50 <0.50 <0.50 <5.0 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/27/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 8/28/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/25/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 12/14/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 7/19/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/21/2023 <0.34 <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 <0.31 <0.30 <0.33 <0.42 <0.64 <0.34 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/8/2023 <0.079 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 <0.072 <0.081 <0.11 <0.053 <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 12/14/2021 212 <5.0 73.2 <5.0 <5.0 <10.0 <5.0 86.4 356 56.7 54.9 673 207 <5.0 <5.0 100 1,790 416 1,160 550 1,710 7/19/2022 175 <5.0 <5.0 <5.0 <5.0 <10.0 <5.0 66.2 287 44.5 42.8 511 162 7.2 <5.0 51.4 1,250 339 796 267 1,063 2/22/2023 159 <3.4 <4.9. <4.0 <4.3 <5.4 <3.6 58.8 166 43.7 42.7 467 156 <2.9 <2.9 25.4 1,090 310 647 169 816 8/8/2023 202 <2.0 <0.66 <0.85 <0.69 <1.8 <1.5 68.5 187 44.6 46.1 439 154 <1.4 <0.86 15.9 978 300 600 84.0 684 7/19/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 1.8 <0.50 <0.50 2.4 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/22/2023 0.42 J <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 1.2 <0.30 <0.33 0.92 <0.64 <0.34 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/9/2023 0.80 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 2.2 <0.081 <0.11 1.9 <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 1 4 70 70 70 3 0.4 70 600 70 20 6 70 70 0.70 600 400 400 NS NS 500 5,000 4,000 5,900 8,800 70,000 3,000 400 70,000 80,000 30,500 20,000 6,000 26,100 70,000 700 260,000 28,500 24,100 NS NS 50,000 Notes: 1) North Carolina Department of Environmental Quality (NC DEQ) 15A NCAC 02L.0202 Groundwater Standards (2L Standards) dated April 2022. 2) NC DEQ Gross Contamination Levels (GCLs) for Groundwater dated September 2022. Bold value exceeds the DEQ 2L Standard. Only compounds detected in at least one sample shown above. Laboratory analytical method shown in parentheses. VOCs = volatile organic compounds; µg/L = micrograms per liter; NA = not analyzed; ND = not detected; NS = not specified SM = Standard Methods for the Examination of Water and Wastewater * = Duplicate sample taken. J = Compound was detected above the laboratory method detection limit but below the laboratory reporting limit resulting in a laboratory estimated concentration. VOCs (SM 6200B) µg/L MW-7 2L Standards (1) GCLs (2) Sa m p l e I D MW-8 MW-9 Sa m p l e D a t e MW-10 MW-11 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/Tables/Marble Tables_092023 9/22/2023 Table 2 (Page 2 of Page 4) Hart & Hickman, PC Table 2 (Page 3 of 4) Summary of Groundwater Analytical Data NC DOT Maintenance Facility Marble, North Carolina H&H Job No. DOT-470 Be n z e n e Br o m o f o r m n- B u t y l b e n z e n e se c - B u t y l b e n z e n e Ch l o r o f o r m Ch l o r o m e t h a n e Dib r o m o c h l o r o m e t h a n e Dii s o p r o p y l e t h e r Et h y l b e n z e n e Is o p r o p y l b e n z e n e (C u m e n e ) Me t h y l - t e r t - b u t y l e t h e r Na p h t h a l e n e n- P r o p y l b e n z e n e St y r e n e Te t r a c h l o r o e t h e n e To l u e n e 1, 2 , 4 - T r i m e t h y l b e n z e n e 1, 3 , 5 - T r i m e t h y l b e n z e n e m& p - X y l e n e o- X y l e n e To t a l X y l e n e s 7/19/2022 0.92 <0.50 <0.50 2.3 <0.50 <1.0 <0.50 4.7 0.40 J 1.4 2.6 3.2 3.8 <0.50 <0.50 <0.50 3.5 1.6 <1.0 <0.50 ND 2/22/2023 <0.34 <0.34 <0.49 1.8 <0.43 <0.54 <0.36 <0.31 <0.30 1.4 <0.50 2.1 4.0 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/9/2023 0.41 J <0.20 <0.066 2.2 <0.069 <0.18 <0.15 0.79 <0.081 1.2 0.45 J <0.10 2.9 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 7/19/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/20/2023 <0.34 <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 <0.31 <0.30 <0.33 0.43 J <0.64 <0.34 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/9/2023 <0.079 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 0.13 J <0.081 <0.11 0.67 <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 12/13/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 2.4 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 7/19/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 1.6 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/21/2023 <0.34 <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 <0.31 <0.30 <0.33 1.4 <0.64 <0.34 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/8/2023 <0.079 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 <0.072 <0.081 <0.11 2.1 <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 12/13/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 7/19/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/21/2023 <0.34 <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 <0.31 <0.30 <0.33 <0.42 <0.64 <0.34 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/8/2023 <0.079 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 <0.072 <0.081 <0.11 <0.053 <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 5/17/2017 <0.50 0.55 <0.50 <0.50 0.56 <1.0 0.77 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/7/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 8/9/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/15/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 9/12/2019 <0.50 <0.50 <0.50 <0.50 <5.0 <1.0 <0.50 <0.50 <0.50 <0.50 0.53 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/26/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 8/28/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/24/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 12/14/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 7/20/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/22/2023 <0.34 <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 <0.31 <0.30 <0.33 <0.42 <0.64 <0.34 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/9/2023 <0.079 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 <0.072 <0.081 <0.11 <0.053 <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 5/17/2017 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/7/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/15/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 9/11/2019 <0.50 <0.50 <0.50 <0.50 <5.0 <1.0 <0.50 <0.50 <0.50 <0.50 0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/27/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 8/28/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/25/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 12/14/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 7/20/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/22/2023 <0.34 <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 <0.31 <0.30 <0.33 <0.42 <0.64 <0.34 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/9/2023 <0.079 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 <0.072 <0.081 <0.11 <0.053 <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 1 4 70 70 70 3 0.4 70 600 70 20 6 70 70 0.70 600 400 400 NS NS 500 5,000 4,000 5,900 8,800 70,000 3,000 400 70,000 80,000 30,500 20,000 6,000 26,100 70,000 700 260,000 28,500 24,100 NS NS 50,000 Notes: 1) North Carolina Department of Environmental Quality (NC DEQ) 15A NCAC 02L.0202 Groundwater Standards (2L Standards) dated April 2022. 2) NC DEQ Gross Contamination Levels (GCLs) for Groundwater dated September 2022. Bold value exceeds the DEQ 2L Standard. Only compounds detected in at least one sample shown above. Laboratory analytical method shown in parentheses. VOCs = volatile organic compounds; µg/L = micrograms per liter; NA = not analyzed; ND = not detected; NS = not specified SM = Standard Methods for the Examination of Water and Wastewater * = Duplicate sample taken. J = Compound was detected above the laboratory method detection limit but below the laboratory reporting limit resulting in a laboratory estimated concentration. Sa m p l e I D Sa m p l e D a t e VOCs (SM 6200B) MW-12 MW-13 DW-1 DW-2 µg/L 2L Standards (1) GCLs (2) WS-1 WS-2 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/Tables/Marble Tables_092023 9/22/2023 Table 2 (Page 3 of Page 4) Hart & Hickman, PC Table 2 (Page 4 of 4) Summary of Groundwater Analytical Data NC DOT Maintenance Facility Marble, North Carolina H&H Job No. DOT-470 Be n z e n e Br o m o f o r m n- B u t y l b e n z e n e se c - B u t y l b e n z e n e Ch l o r o f o r m Ch l o r o m e t h a n e Dib r o m o c h l o r o m e t h a n e Dii s o p r o p y l e t h e r Et h y l b e n z e n e Is o p r o p y l b e n z e n e (C u m e n e ) Me t h y l - t e r t - b u t y l e t h e r Na p h t h a l e n e n- P r o p y l b e n z e n e St y r e n e Te t r a c h l o r o e t h e n e To l u e n e 1, 2 , 4 - T r i m e t h y l b e n z e n e 1, 3 , 5 - T r i m e t h y l b e n z e n e m& p - X y l e n e o- X y l e n e To t a l X y l e n e s 2/7/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 1.7 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 8/9/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 0.96 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/14/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 1.0 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 9/12/2019 <0.50 <0.50 <0.50 <0.50 <5.0 <1.0 <0.50 <0.50 <0.50 <0.50 0.84 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/27/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 0.73 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 12/14/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 0.85 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 7/18/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 0.69 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/22/2023 <0.34 <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 <0.31 <0.30 <0.33 <0.42 <0.64 <0.34 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/9/2023 <0.079 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 <0.072 <0.081 <0.11 0.63 <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 5/17/2017 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/7/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 8/9/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/15/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 9/12/2019 <0.50 <0.50 <0.50 <0.50 <5.0 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/26/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 8/28/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/25/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 12/15/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 7/20/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 ND 2/22/2023 <0.34 <0.34 <0.49 <0.40 <0.43 <0.54 <0.36 <0.31 <0.30 <0.33 <0.42 <0.64 <0.34 <0.29 <0.29 <0.24 <0.50 <0.33 <0.71 <0.34 ND 8/9/2023 <0.079 <0.20 <0.066 <0.085 <0.069 <0.18 <0.15 <0.072 <0.081 <0.11 <0.053 <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 <0.094 <0.14 ND 1 4 70 70 70 3 0.4 70 600 70 20 6 70 70 0.70 600 400 400 NS NS 500 5,000 4,000 5,900 8,800 70,000 3,000 400 70,000 80,000 30,500 20,000 6,000 26,100 70,000 700 260,000 28,500 24,100 NS NS 50,000 Notes: 1) North Carolina Department of Environmental Quality (NC DEQ) 15A NCAC 02L.0202 Groundwater Standards (2L Standards) dated April 2022. 2) NC DEQ Gross Contamination Levels (GCLs) for Groundwater dated September 2022. Bold value exceeds the DEQ 2L Standard. Only compounds detected in at least one sample shown above. Laboratory analytical method shown in parentheses. VOCs = volatile organic compounds; µg/L = micrograms per liter; NA = not analyzed; ND = not detected; NS = not specified SM = Standard Methods for the Examination of Water and Wastewater * = Duplicate sample taken. J = Compound was detected above the laboratory method detection limit but below the laboratory reporting limit resulting in a laboratory estimated concentration. µg/LSa m p l e I D Sa m p l e D a t e VOCs (SM 6200B) GCLs (2) 2L Standards (1) WS-3 Keller Well (WS-18) https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/Tables/Marble Tables_092023 9/22/2023 Table 2 (Page 4 of Page 4) Hart & Hickman, PC Table 3 (Page 1 of 2) Summary of Monitoring Well Groundwater Elevation and Construction Information NC DOT Maintenance Facility Marble, North Carolina H&H Job No. DOT-470 Well ID Sampling Date (mm/dd/yy) Top of Casing Elevation (ft) Depth To Water (ft below TOC) Groundwater Elevation (ft)Date Installed Well Casing Diameter (in) Screen Interval (ft bgs) Depth of Well (ft bgs) 5/16/2017 31.86 68.14 2/8/2018 40.40 59.60 8/9/2018 28.54 71.46 2/14/2019 23.00 77.00 9/10/2019 38.71 61.29 2/26/2020 18.63 81.37 8/27/2020 32.04 67.96 2/24/2021 23.03 76.97 12/13/2021 35.24 64.76 7/18/2022 35.33 64.67 2/20/2023 22.81 77.19 8/7/2023 27.92 72.08 5/16/2017 32.14 66.65 2/8/2018 40.14 58.65 8/9/2018 29.28 69.51 2/14/2019 23.15 75.64 9/10/2019 39.86 58.93 2/26/2020 19.79 79.00 8/27/2020 32.74 66.05 2/24/2021 23.89 74.90 12/13/2021 36.62 62.17 7/18/2022 36.43 62.36 2/20/2023 23.32 75.47 8/7/2023 28.67 70.12 MW-3 5/16/2017 97.27 Not Found -- 1993 2 51.4-61.4 61.4 5/16/2017 29.66 66.49 2/8/2018 37.80 58.35 8/9/2018 26.47 69.68 2/14/2019 21.78 74.37 9/10/2019 35.49 60.66 2/26/2020 18.97 77.18 8/27/2020 31.16 64.99 2/24/2021 22.92 73.23 12/13/2021 34.31 61.84 7/18/2022 33.68 62.47 2/20/2023 22.14 74.01 8/7/2023 26.41 69.74 5/16/2017 32.34 65.98 2/8/2018 40.39 57.93 8/9/2018 29.30 69.02 2/14/2019 23.51 74.81 9/10/2019 39.26 59.06 2/26/2020 20.82 77.50 8/27/2020 33.18 65.14 2/24/2021 24.34 73.98 12/13/2021 36.61 61.71 7/18/2022 36.35 61.97 2/20/2023 23.89 74.43 8/7/2023 28.91 69.41 5/16/2017 32.45 65.83 2/8/2018 40.16 58.12 8/9/2018 29.51 68.77 2/14/2019 23.68 74.60 9/10/2019 39.82 58.46 2/26/2020 20.24 78.04 8/27/2020 32.99 65.29 2/24/2021 24.12 74.16 12/13/2021 37.64 60.64 7/18/2022 36.56 61.72 2/20/2023 23.65 74.63 8/7/2023 28.84 69.44 Notes: ft bgs = feet below ground surface; TOC = top of well casing; NA = not available * = 6-inch surface casing installed to 103 ft bgs. MW-6 100.1496.5-101.52199398.28 100.00MW-1 43.1335.2-45.22199398.79MW-2 45.1534.8-44.821993 MW-4 44.6834.8-44.8 44.8034.6-44.62199396.15 2199398.32MW-5 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/Tables/Marble Tables_0920239/22/2023 Table 3 ( Page 1 of Page 2) Hart & Hickman, PC Table 3 (Page 2 of 2) Summary of Monitoring Well Groundwater Elevation and Construction Information NC DOT Maintenance Facility Marble, North Carolina H&H Job No. DOT-470 Well ID Sampling Date (mm/dd/yy) Top of Casing Elevation (ft) Depth To Water (ft below TOC) Groundwater Elevation (ft)Date Installed Well Casing Diameter (in) Screen Interval (ft bgs) Depth of Well (ft bgs) 5/16/2017 30.85 67.45 2/8/2018 39.30 59.00 8/9/2018 27.53 70.77 2/14/2019 22.27 76.03 9/10/2019 37.37 60.93 2/26/2020 18.00 80.30 8/27/2020 30.96 67.34 2/24/2021 22.15 76.15 12/13/2021 34.23 64.07 7/18/2022 34.10 64.20 2/20/2023 21.87 76.43 8/7/2023 26.70 71.60 5/16/2017 32.43 65.82 2/8/2018 40.39 57.86 8/9/2018 29.37 68.88 2/14/2019 24.05 74.20 9/10/2019 39.49 74.20 2/26/2020 20.83 77.42 8/27/2020 33.24 65.01 2/24/2021 24.59 73.66 12/13/2021 36.81 61.44 7/18/2022 36.57 61.68 2/20/2023 23.99 74.26 8/7/2023 28.97 69.28 5/16/2017 37.42 58.84 2/8/2018 43.64 52.62 8/9/2018 34.98 61.28 2/14/2019 31.74 64.52 9/10/2019 42.96 53.30 2/26/2020 29.32 66.94 8/27/2020 38.90 57.36 2/24/2021 32.61 63.65 12/13/2021 41.63 54.63 7/18/2022 41.85 54.41 2/20/2023 30.75 65.51 8/7/2023 33.91 62.35 12/13/2021 53.48 43.70 7/18/2022 55.74 41.44 2/20/2023 39.10 58.08 8/7/2023 46.89 50.29 7/18/2022 41.46 44.47 2/20/2023 24.78 61.15 8/7/2023 34.20 51.73 7/18/2022 30.23 48.00 2/20/2023 14.03 64.20 8/7/2023 21.93 56.30 7/18/2022 33.22 46.01 2/20/2023 27.48 51.75 8/7/2023 29.17 50.06 12/13/2021 35.04 66.61 7/18/2022 34.58 67.07 2/20/2023 20.23 81.42 8/7/2023 26.95 74.70 12/13/2021 55.21 42.69 7/18/2022 56.38 41.52 2/20/2023 40.74 57.16 8/7/2023 48.92 48.98 Notes: ft bgs = feet below ground surface; TOC = top of well casing; NA = not available * = 6-inch surface casing installed to 103 ft bgs. MW-13 101.65DW-1* 124109-1242202197.90DW-2* 6353-632202279.23 MW-9 6535-652202197.18MW-10 53.04NA2199396.26 98.30MW-7 46.25NA2199398.25MW-8 48.7NA21993 MW-11 4212-42 125110-12522021 6954-692202285.93 2202278.23MW-12 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/NC DOT -DOT/DOT-470 Marble GW/Reports/2023 Aug GW Monitoring/Tables/Marble Tables_0920239/22/2023 Table 3 ( Page 2 of Page 2) Hart & Hickman, PC Table 4 (Page 1 of 1) Natural Attenuation Parameters NC DOT Maintenance Facility Marble, North Carolina H&H Job No. DOT-470 Well Date pH (SU)Conductivity (µS/cm)Temperature (ºC) ORP (mV)Dissolved Oxygen (mg/L)Turbidity (NTU) 7/18/2022 NM NM NM NM NM NM 2/22/2023 5.07 998 18.9 -120.1 0.45 26.5 8/9/2023 5.29 1,567 19.5 115.8 2.04 25.2 7/19/2022 8.26 350.8 19.3 -13.0 1.01 18.8 2/21/2023 6.20 317.7 18.8 -140.7 0.96 62.2 8/8/2023 6.15 307.1 22.7 -53.9 2.07 117.0 7/18/2020 NM NM NM NM NM NM 7/18/2022 NM NM NM NM NM NM 2/21/2023 5.42 383.3 19.3 94.9 4.99 >1,000 8/8/2023 6.17 237.3 19.7 82.5 3.2 361.0 7/18/2022 6.50 899 20.4 -3.7 1.14 79.9 2/21/2023 6.38 1,136 19.1 -149.1 0.26 51.1 8/9/2023 6.10 303.1 22.7 -62.9 1.69 77.6 7/19/2022 5.93 200.9 18.4 -13.9 0.68 2.87 2/21/2023 5.79 187.3 18.1 61 2.47 0.42 8/8/2023 6.2 224.4 19.4 60.7 1.44 2.54 7/19/2022 6.41 362.8 19.9 121.0 1.37 14.6 2/21/2023 5.52 468.7 19.5 -50.7 1.23 12.1 8/9/2023 5.32 372.2 20.6 29.6 1.15 51.0 7/18/2022 6.36 388.0 20.1 -2.8 1.95 178.2 2/22/2023 6.22 357.1 19.1 -170.3 2.22 7.6 8/8/2023 6.13 415.9 20.8 -52.6 1.12 189.0 7/19/2022 5.98 255.7 18.9 215.5 1.98 64.6 2/21/2023 4.69 360.7 17.6 -84.4 2.98 18.9 8/8/2023 4.8 591 19.1 119.5 1.05 7.08 7/19/2022 6.41 448.0 19.0 38.1 1.89 >1,000 2/22/2023 6.12 464.6 18.7 -35.6 5.62 164.7 8/8/2023 6.07 534.3 21 -74.1 0.77 432.0 7/19/2022 4.89 125.1 17.9 154.2 2.63 >1,000 2/22/2023 5.47 118.2 16.4 80.8 4.40 103.4 8/9/2023 5.7 313.7 17.6 62.9 2.34 223 7/19/2022 5.61 2,764 19.8 -75.4 1.29 >1,000 2/22/2023 5.83 3,886 16.2 40.8 3.60 306.3 8/9/2023 6.7 4,664 16.7 34.1 2.59 829 7/19/2022 5.62 235.2 17.9 219.9 1.33 40.1 2/20/2023 4.99 244.2 16.1 45.1 2.90 5.63 8/9/2023 5.21 265.6 18.1 41.6 1.98 379.0 7/19/2022 6.09 103.5 18.0 26.4 4.56 3.54 2/21/2023 6.12 105.9 17.9 46.4 4.38 2.81 8/8/2023 6.63 235.4 18.5 56.3 2.48 2.67 7/19/2022 5.81 119.2 19.4 -27.5 0.92 14.47 2/21/2023 5.49 66.5 18.4 70.6 2.57 3.11 8/8/2023 6.07 270.9 19.4 77.8 1.40 4.24 Notes: SU = standard units; µS/cm = microsiemens per centimeter; ORP = oxidation-reduction potential; mV = millivolts; mg/L milligrams per liter; NTU = nephelometric turbidity units NM = not measured MW-1 MW-2 MW-3 MW-4 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10 MW-11 MW-12 MW-13 DW-1 DW-2 S:\AAA-Master Projects\NC DOT -DOT\DOT-470 Marble GW\Reports\2023 GW Assessment\Marble Tables_20230224 9/22/2023 Table 4 ( Page 1 of Page 1) Hart & Hickman, PC USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Census Bureau TIGER/Line data; USFS Road Data; Natural Earth Data; U.S. Department of State Humanitarian Information Unit; and NOAA National Centers for Environmental Information, U.S. Coastal Relief Model. Data refreshed April, 2023. SITE LOCATION MAP NC DOT - MARBLE MAINTENANCE YARD 5426 NC HIGHWAY 141 MARBLE, NORTH CAROLINA DATE: 9-5-23 JOB NO: DOT-470 REVISION NO: 0 FIGURE. 1 2923 South Tryon Street - Suite 100Charlotte, North Carolina 28203704-586-0007 (p) 704-586-0373 (f)License # C-1269 / # C-245 Geology TITLE PROJECT 0 2,000 4,000 SCALE IN FEET Path: S:\AAA-Master Projects\NC DOT -DOT\DOT-470 Marble GW\Reports\2023 Aug GW Monitoring\Figures\FIGURE-1.mxd N U.S.G.S. QUADRANGLE MAP MARBLE, NORTH CAROLINA 2022 QUADRANGLE 7.5 MINUTE SERIES (TOPOGRAPHIC) SITE WS-1 KELLER WELL WS-2 WS-3 FORMER WS-2 MW-8 MW-4 MW-3 MW-9 MW-1 MW-10 DW-2 DW-1 MW-12 S103J2 MW-2 MW-6 MW-5 MW-13 MW-11 MW-7 REVISION NO. 0 JOB NO. DOT-470 DATE: 9-5-23 FIGURE NO. 2 NC DOT - MARBLE MAINTENANCE YARD 5426 NC HIGHWAY 141 MARBLE, NORTH CAROLINA LEGEND SITE PROPERTY BOUNDARY EXTENTS OF THE UST BASIN AND DISPENSERS MONITORING WELL LOCATION DESTROYED MONITORING WELL LOCATION DEEP MONITORING WELL LOCATION WATER SUPPLY WELL LOCATION RECOVERY WELL LOCATION INACTIVE WATER SUPPLY WELL CROSS-SECTION TRANSECT LOCATION 2923 South Tryon Street-Suite 100 Charlotte, North Carolina 28203 704-586-0007(p) 704-586-0373(f) License # C-1269 / #C-245 Geology NOTES: 1.AERIAL IMAGERY OBTAINED FROM NC ONEMAP, 2019. 2.LOCATION OF MW-3 IS APPROXIMATE. MULTIPLE ATTEMPTS MADE TO LOCATE WELL. MW-3 IS CONSIDERED TO BE DESTROYED. 3.UST = UNDERGROUND STORAGE TANK 4.RW-5 LOCATION IS APPROXIMATE DUE TO DATA TRANSFER ERROR FROM GPS. NC H I G H W A Y 1 4 1 RW-1 RW-2 RW-3RW-4 RW-6 APPROX. FORMER DISPENSER LOCATION APPROX. FORMER UST LOCATION FORMER REMEDIATION SYSTEM BUILDING RW-5 LON G B R A N C H R O A D FORMER WASH HOUSE SALT STORAGE AREA A A B B' A' SITE MAP AND CROSS-SECTION LAYOUT S: \ A A A - M a s t e r P r o j e c t s \ N C D O T - D O T \ D O T - 4 7 0 M a r b l e G W \ R e p o r t s \ 2 0 2 3 A u g G W M o n i t o r i n g \ F i g u r e s \ D O T . 4 7 0 - S I T E _ 2 0 2 3 0 9 0 5 . d w g , F I G 2 , 9 / 2 2 / 2 0 2 3 7 : 1 2 : 0 7 A M , s h a y n e s REVISION NO. 0 JOB NO. DOT-470 DATE: 9-5-23 FIGURE NO. 3 NC DOT - MARBLE MAINTENANCE YARD 5426 NC HIGHWAY 141 MARBLE, NORTH CAROLINA WATER SUPPLY WELL LOCATION MAP LEGEND SITE PROPERTY BOUNDARY 500 FT BUFFER 1,000 FT BUFFER WATER SUPPLY WELL LOCATION WATER SUPPLY WELL NOT LOCATED 2023 2923 South Tryon Street-Suite 100 Charlotte, North Carolina 28203 704-586-0007(p) 704-586-0373(f) License # C-1269 / #C-245 Geology NC H I G H W A Y 1 4 1 LO N G B R A N C H R O A D NOTES: 1.AERIAL IMAGERY OBTAINED FROM NC ONEMAP, 2019. 2.ACCORDING TO THE PROPERTY OWNER FOR WS-18, THERE ARE NO WATER SUPPLY WELLS WHERE WS-7 AND WS-8 ARE INDICATED ON THE MAP. WATER FOR THESE PROPERTIES IS SUPPLIED BY WS-18. S: \ A A A - M a s t e r P r o j e c t s \ N C D O T - D O T \ D O T - 4 7 0 M a r b l e G W \ R e p o r t s \ 2 0 2 3 A u g G W M o n i t o r i n g \ F i g u r e s \ D O T . 4 7 0 - S I T E _ 2 0 2 3 0 9 0 5 . d w g , F I G 3 , 9 / 5 / 2 0 2 3 2 : 0 0 : 4 8 P M , d r a b u r n 130 100 70 NORTHEAST (FT.) 160 40 10 130 100 70 160 40 10 RE L A T I V E E L E V A T I O N RE L A T I V E E L E V A T I O N DW - 1 RW - 1 MW - 2 MW - 6 MW - 8 RW - 4 MW - 5 DW - 2 MW - 1 0 MW - 1 2 SOUTHWEST (FT.) REVISION NO. 0 JOB NO. DOT-470 DATE: 9-5-23 FIGURE NO. 4 NC DOT - MARBLE MAINTENANCE YARD 5426 NC HIGHWAY 141 MARBLE, NORTH CAROLINA GENERALIZED CROSS-SECTION A-A' 2923 South Tryon Street-Suite 100 Charlotte, North Carolina 28203 704-586-0007(p) 704-586-0373(f) License # C-1269 / #C-245 Geology NOTES: 1.REFER TO FIGURE 2 FOR CROSS-SECTION TRANSECT. 2.MONITORING WELLS GAUGED ON AUGUST 7, 2023. 3.MONITORING WELLS SAMPLED AUGUST 8 AND 9, 2023. 4.BECAUSE MONITORING WELL TOP OF CASING (TOC) ELEVATIONS ARE RELATIVE, THE TOC ELEVATIONS FOR EACH WELL WERE INCREASED BY 50 FEET TO AVOID NEGATIVE ELEVATIONS ON THE VERTICAL AXIS. 5.DEPTH TO WATER FOR MW-10 NOT HONORED FOR CROSS-SECTION. 6.SCREEN INTERVAL FOR MW-8 ESTIMATED BASED ON OTHER MONITORING WELLS INSTALLED DURING THE SAME TIME PERIOD. LEGEND CLAYEY SILT/SILT SANDY SILT PWR / BEDROCK (PHYLLITE) MW - 5 SHALLOW GROUNDWATER ELEVATION (ARBITRARY SITE DATUM) GROUNDWATER IMPACTS ABOVE 2L STANDARDS (SEE FIGURE 7 FOR PETROLEUM CONCENTRATIONS IN GROUNDWATER) APPROXIMATE EXTENT OF FORMER UST BASIN MONITORING WELL DEPICTING SCREEN INTERVAL S: \ A A A - M a s t e r P r o j e c t s \ N C D O T - D O T \ D O T - 4 7 0 M a r b l e G W \ R e p o r t s \ 2 0 2 3 A u g G W M o n i t o r i n g \ F i g u r e s \ D O T . 4 7 0 - S I T E _ 2 0 2 3 0 9 0 5 . d w g , F I G 4 , 9 / 2 6 / 2 0 2 3 1 2 : 3 1 : 2 3 P M , d r a b u r n 130 100 70 160 40 10 130 100 70 160 40 10 RE L A T I V E E L E V A T I O N RE L A T I V E E L E V A T I O N MW - 2 MW - 6 MW - 8 MW - 1 MW - 4 NORTHWEST (FT.) SOUTHEAST (FT.) REVISION NO. 0 JOB NO. DOT-470 DATE: 9-5-23 FIGURE NO. 5 NC DOT - MARBLE MAINTENANCE YARD 5426 NC HIGHWAY 141 MARBLE, NORTH CAROLINA GENERALIZED CROSS-SECTION B-B' 2923 South Tryon Street-Suite 100 Charlotte, North Carolina 28203 704-586-0007(p) 704-586-0373(f) License # C-1269 / #C-245 Geology NOTES: 1.REFER TO FIGURE 2 FOR CROSS-SECTION TRANSECT. 2.MONITORING WELLS GAUGED ON AUGUST 7, 2023. 3.MONITORING WELLS SAMPLED AUGUST 8 AND 9, 2023. 4.BECAUSE MONITORING WELL TOP OF CASING (TOC) ELEVATIONS ARE RELATIVE, THE TOC ELEVATIONS FOR EACH WELL WERE INCREASED BY 50 FEET TO AVOID NEGATIVE ELEVATIONS ON THE VERTICAL AXIS. 5.SCREEN INTERVAL FOR MW-8 ESTIMATED BASED ON OTHER MONITORING WELLS INSTALLED DURING THE SAME TIME PERIOD. LEGEND CLAYEY SILT/SILT SANDY SILT PWR / BEDROCK (PHYLLITE) MW - 6 SHALLOW GROUNDWATER ELEVATION (ARBITRARY SITE DATUM) GROUNDWATER IMPACTS ABOVE 2L STANDARDS (SEE FIGURE 7 FOR PETROLEUM CONCENTRATIONS IN GROUNDWATER) APPROXIMATE EXTENT OF FORMER UST BASIN MONITORING WELL DEPICTING SCREEN INTERVAL S: \ A A A - M a s t e r P r o j e c t s \ N C D O T - D O T \ D O T - 4 7 0 M a r b l e G W \ R e p o r t s \ 2 0 2 3 A u g G W M o n i t o r i n g \ F i g u r e s \ D O T . 4 7 0 - S I T E _ 2 0 2 3 0 9 0 5 . d w g , F I G 5 , 9 / 2 6 / 2 0 2 3 1 2 : 3 1 : 5 4 P M , d r a b u r n 57 57 60 66 66 69 69 (70.12) 63 63 60 72 72 70 54 54 54 54 51 51 (69.28) (69.41) (62.35) (69.74) (72.08) (50.29) (56.30) (50.06) (71.60) (51.73) MW-8 MW-4 MW-3 MW-9 MW-1 MW-10 DW-2 DW-1 MW-12 S103J2 MW-2 MW-6 MW-5 MW-13 MW-11 MW-7 WS-1 KELLER WELL WS-3 FORMER WS-2 REVISION NO. 0 JOB NO. DOT-470 DATE: 9-5-23 FIGURE NO. 6 NC DOT - MARBLE MAINTENANCE YARD 5426 NC HIGHWAY 141 MARBLE, NORTH CAROLINA GROUNDWATER POTENTIOMETRIC SURFACE MAP (AUGUST 2023) LEGEND SITE PROPERTY BOUNDARY MONITORING WELL LOCATION DESTROYED MONITORING WELL LOCATION DEEP MONITORING WELL LOCATION WATER SUPPLY WELL LOCATION INACTIVE WATER SUPPLY WELL LOCATION GROUNDWATER ELEVATION (ARBITRARY SITE DATUM) GROUNDWATER ELEVATION CONTOUR (ARBITRARY SITE DATUM) INFERRED GROUNDWATER FLOW DIRECTION 2923 South Tryon Street-Suite 100 Charlotte, North Carolina 28203 704-586-0007(p) 704-586-0373(f) License # C-1269 / #C-245 Geology NOTES: 1.AERIAL IMAGERY OBTAINED FROM NC ONEMAP, 2019. 2.MONITORING WELLS GAUGED ON AUGUST 7, 2023. 3.LOCATION OF MW-3 IS APPROXIMATE. MULTIPLE ATTEMPTS MADE TO LOCATE WELL. MW-3 IS CONSIDERED TO BE DESTROYED. 4.MW-10 WATER ELEVATION NOT CONSIDERED IN CONTOURING. 72 (72.08) NC H I G H W A Y 1 4 1 S: \ A A A - M a s t e r P r o j e c t s \ N C D O T - D O T \ D O T - 4 7 0 M a r b l e G W \ R e p o r t s \ 2 0 2 3 A u g G W M o n i t o r i n g \ F i g u r e s \ D O T . 4 7 0 - S I T E _ 2 0 2 3 0 9 0 5 . d w g , F I G 6 , 9 / 2 1 / 2 0 2 3 2 : 5 9 : 1 6 P M , s h a y n e s WS-1 KELLER WELL WS-2 WS-3 MW-8 MW-4 MW-3 MW-9 MW-1 MW-10 DW-2 DW-1 MW-12 S103J2 MW-2 MW-6 MW-5 MW-13 FORMER WS-2 MW-11 MW-7 MW-2 (8/8/23) BENZENE 183 ETHYLBENZENE 99.7 ISOPROPYLBENZENE (CUMENE)20.9 METHYL-TERT-BUTYL ETHER 16.5 NAPHTHALENE 224 n-PROPYLBENZENE 69.4 STYRENE 2.2 TOLUENE 26 1,2,4-TRIMETHYLBENZENE 397 1,3,5-TRIMETHYLBENZENE 123 TOTAL XYLENES 379 MW-2 (8/8/23) BENZENE 183 ETHYLBENZENE 99.7 ISOPROPYLBENZENE (CUMENE)20.9 METHYL-TERT-BUTYL ETHER 16.5 NAPHTHALENE 224 n-PROPYLBENZENE 69.4 STYRENE 2.2 TOLUENE 26 1,2,4-TRIMETHYLBENZENE 397 1,3,5-TRIMETHYLBENZENE 123 TOTAL XYLENES 379 REVISION NO. 0 JOB NO. DOT-470 DATE: 9-5-23 FIGURE NO. 7 NC DOT - MARBLE MAINTENANCE YARD 5426 NC HIGHWAY 141 MARBLE, NORTH CAROLINA GROUNDWATER CONTAMINANT CONCENTRATION MAP (AUGUST 2023) LEGEND SITE PROPERTY BOUNDARY MONITORING WELL LOCATION DESTROYED MONITORING WELL LOCATION DEEP MONITORING WELL LOCATION WATER SUPPLY WELL LOCATION GROUNDWATER IMPACTS ABOVE NORTH CAROLINA 2L (NC 2L) STANDARDS 2923 South Tryon Street-Suite 100 Charlotte, North Carolina 28203 704-586-0007(p) 704-586-0373(f) License # C-1269 / #C-245 Geology NOTES: 1. AERIAL IMAGERY OBTAINED FROM NC ONEMAP, 2019. 2. LOCATION OF MW-3 IS APPROXIMATE. MULTIPLE ATTEMPTS MADE TO LOCATE WELL. MW-3 IS CONSIDERED TO BE DESTROYED. 3. ND = CONCENTRATION NOT DETECTED ABOVE THE LABORATORY REPORTING LIMIT μg/L = MICROGRAMS PER LITER 4.BOLD INDICATES EXCEEDANCE OF NC 2L STANDARD. 5. J FLAG DENOTES ESTIMATED CONCENTRATION BETWEEN LABORATORY REPORTING LIMIT AND METHOD DETECTION LIMIT. CONSTITUENT CONCENTRATION (μg/L) SAMPLE ID & DATE MW-5 (8/9/23) BENZENE 2.0 DIISOPROPYL ETHER 8.4 ETHYLBENZENE 3.3 METHYL-TERT-BUTYL ETHER 5.4 NAPHTHALENE 0.40 J 1,2,4-TRIMETHYLBENZENE 1.9 TOTAL XYLENES 1.11 MW-6 (8/8/23) DIISOPROPYL ETHER 7.7 METHYL-TERT-BUTYL ETHER 4.6 WS-1 (8/9/23) ND MW-9 (8/8/23) ND MW-7 (8/9/23) METHYL-TERT-BUTYL ETHER 0.41 J NC H I G H W A Y 1 4 1 MW-4 (8/8/23) ND MW-1 (8/9/23) METHYL-TERT-BUTYL ETHER 1.1 WS-2 (8/9/23) ND KELLER WELL (WS-18) (8/9/23) ND MW-8 (8/8/23) BENZENE 2,180 DIISOPROPYL ETHER 612 ETHYLBENZENE 334 ISOPROPYLBENZENE (CUMENE)52.2 METHYL-TERT-BUTYL ETHER 321 NAPHTHALENE 629 n-PROPYLBENZENE 145 STYRENE 3.4 J TOLUENE 150 1,2,4-TRIMETHYLBENZENE 515 1,3,5-TRIMETHYLBENZENE 92.0 TOTAL XYLENES 692 MW-10 (8/8/23) BENZENE 202 DIISOPROPYL ETHER 68.5 ETHYLBENZENE 187 ISOPROPYLBENZENE (CUMENE)44.6 METHYL-TERT-BUTYL ETHER 46.1 NAPHTHALENE 439 n-PROPYLBENZENE 154 TOLUENE 15.9 1,2,4-TRIMETHYLBENZENE 978 1,3,5-TRIMETHYLBENZENE 300 TOTAL XYLENES 684 DW-1 (8/8/23) METHYL-TERT-BUTYL ETHER 2.1 DW-2 (8/8/23) ND MW-11 (8/9/23) BENZENE 0.80 DIISOPROPYL ETHER 2.2 METHYL-TERT-BUTYL ETHER 1.9 MW-12 (8/9/23) BENZENE 0.41 J sec-BUTYLBENZENE 2.2 DIISOPROPYL ETHER 0.79 ISOPROPYLBENZENE (CUMENE)1.2 METHYL-TERT-BUTYL ETHER 0.45 J n-PROPYLBENZENE 2.9 MW-13 (8/9/23) DIISOPROPYL ETHER 0.13 J METHYL-TERT-BUTYL ETHER 0.67 WS-3 (8/9/23) METHYL-TERT-BUTYL ETHER 0.63 S: \ A A A - M a s t e r P r o j e c t s \ N C D O T - D O T \ D O T - 4 7 0 M a r b l e G W \ R e p o r t s \ 2 0 2 3 A u g G W M o n i t o r i n g \ F i g u r e s \ D O T . 4 7 0 - S I T E _ 2 0 2 3 0 9 0 5 . d w g , F I G 5 , 9 / 1 2 / 2 0 2 3 1 2 : 3 1 : 1 3 P M , d r a b u r n Appendix A 1994 CSA Addendum - Figure 2 Appendix B Boring Logs and Well Construction Records !"#$ # ! 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"#$$$% " & " ' " "# " "# " "# 0 " "#1$ " "#2 "0 " 3 ##4 (( ()( *# +6$ + , %-./ - + ! 0. 1 4 "#$&5( 4 "#"0 &"( 0 "#1$ &!( 6 "# " "#&5( 65 " "#&5( 5!"# 7&5( 3 " &8+9( %+** 2 6 $&5( 6 "0 &"( &"( -"! 1 " 1 " 1 " &!( :" *.3 *.3* /.4(/ 5 * 1 % & 5 ( 3; 3 < 9 6 - 3 = 3 6 3 3 1 % 3 ; 33 0 "0 4 > ! - 7 & 5 ( ;3-?=;@3-;%; 1@- %; & 0 ( 3 0 % & 5 ( . . ) &(%HGURFN3:5%$ "+ B# >"$! "#$ C!""#! "#$ 0" 0 >+! "#$2 E !+! "#$ ! &(4 "# 0" . . ) Robert Miller 2675 SAEDACCO Inc X 12-9-21 MW-10 NC DOT 5426 NC-141 , Marble, NC, 28905 Cherokee X X 1 65 8.25" 4.25" HSA 0 35 2" SCH-40 PVC 35 65 2" .010 SCH-40 PVC 0 30 Portland/BentoniteTrimi 33 65 Silica Sand 20/30 0 65 Tan Silty sand three foot bentonite seal from 30' to 33' 12/16/2021 WELL CONSTRUCTION RECORD (GW-1)For Internal Use Only: Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 6-6-2018 1. Well Contractor Information: Well Contractor Name NC Well Contractor Certification Number Company Name 2. Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.) 3. Well Use (check well use): Water Supply Well: ƑAgricultural ƑMunicipal/Public ƑGeothermal (Heating/Cooling Supply)ƑResidential Water Supply (single) ƑIndustrial/Commercial ƑResidential Water Supply (shared) ƑIrrigation ƑWells > 100,000 GPD Non-Water Supply Well: ƑMonitoring ƑRecovery Injection Well: ƑAquifer Recharge ƑGroundwater Remediation ƑAquifer Storage and Recovery ƑSalinity Barrier ƑAquifer Test ƑStormwater Drainage ƑExperimental Technology ƑSubsidence Control ƑGeothermal (Closed Loop)ƑTracer ƑGeothermal (Heating/Cooling Return) ƑOther (explain under #21 Remarks) 4. Date Well(s) Completed: Well ID# 5a. Well Location: Facility/Owner Name Facility ID# (if applicable) Physical Address, City, and Zip County Parcel Identification No. (PIN) 5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient) N W 6. Is(are) the well(s): ƑPermanent or ƑTemporary 7. Is this a repair to an existing well: ƑYes or ƑNo If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form. 8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wellsdrilled: 9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100ƍ) 10. Static water level below top of casing: (ft.) If water level is above casing, use “+” 11. Borehole diameter: (in.) 12. Well construction method:(i.e. auger, rotary, cable, direct push, etc.) FOR WATER SUPPLY WELLS ONLY: 13a. Yield (gpm) Method of test: 13b. Disinfection type: Amount: 14. WATER ZONES FROM TO DESCRIPTION ft.ft. ft.ft. 15. OUTER CASING (for multi-cased wells) OR LINER (if applicable) FROM TO DIAMETER THICKNESS MATERIAL ft.ft.in. 16. INNER CASING OR TUBING (geothermal closed-loop) FROM TO DIAMETER THICKNESS MATERIAL ft.ft.in. ft.ft.in. 17. SCREEN FROM TO DIAMETER SLOT SIZE THICKNESS MATERIAL ft.ft.in. ft.ft.in. 18. GROUT FROM TO MATERIAL EMPLACEMENT METHOD & AMOUNT ft.ft. ft.ft. ft.ft. 19. SAND/GRAVEL PACK (if applicable) FROM TO MATERIAL EMPLACEMENT METHOD ft.ft. ft.ft. 20. DRILLING LOG (attach additional sheets if necessary) FROM TO DESCRIPTION (color, hardness, soil/rock type, grain size, etc.) ft.ft. ft.ft. ft.ft. ft.ft. ft.ft. ft.ft. ft.ft. 21. REMARKS 22. Certification: Signature of Certified Well Contractor Date By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner. Site diagram or additional well details:You may use the back of this page to provide additional ZHOOFRQVWUXFWLRQLQIRDGG 6HH2YHU LQ5HPDUNV%R[<RXPD\DOVRDWWDFKDGGLWLRQDOSDJHVLIQHFHVVDU\ SUBMITTAL INSTRUCTIONS Submit this GW-1 within 30 days of well completion per the following: 24a. For All Wells:Original form to Division of Water Resources (DWR),Information Processing Unit, 1617 MSC, Raleigh, NC 27699-1617 24b. For Injection Wells:Copy to DWR, Underground Injection Control (IUC)Program, 1636 MSC, Raleigh, NC 27699-1636 24c. For Water Supply and Open-Loop Geothermal Return Wells: Copy to the county environmental health department of the county where installed 24d. For Water Wells producing over 100,000 GPD: Copy to DWR, CCPCUAPermit Program, 1611 MSC, Raleigh, NC 27699-1611 JOHNNY BURR A - 3098 GEOLOGIC EXPLORATION 0.0 54.0 SCH 40 54.0 69.0 .010 ● 0.0 PORTLAND BENTONITE 51.0 20-40 0.0 BROWN PWR 07/13/22 MW-11 63.0 GRAY ROCK NCDOT MAINTENANCE YARD 5426 NC - 141 MARBLE 28905 CHEROKEE BENTONITE SEAL ~ 41.0 - 51.0 FEET 35° 08' 17.81" 83° 55' 31.71"07/29/22 ● 69.0 42.0 6.0 AIR PVC SCH 40 PVC 2.0 2.0 41.0 69.0 63.0 69.0 FINE SILICA SAND SLURRY WELL CONSTRUCTION RECORD (GW-1)For Internal Use Only: Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 6-6-2018 1. Well Contractor Information: Well Contractor Name NC Well Contractor Certification Number Company Name 2. Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.) 3. Well Use (check well use): Water Supply Well: ƑAgricultural ƑMunicipal/Public ƑGeothermal (Heating/Cooling Supply)ƑResidential Water Supply (single) ƑIndustrial/Commercial ƑResidential Water Supply (shared) ƑIrrigation ƑWells > 100,000 GPD Non-Water Supply Well: ƑMonitoring ƑRecovery Injection Well: ƑAquifer Recharge ƑGroundwater Remediation ƑAquifer Storage and Recovery ƑSalinity Barrier ƑAquifer Test ƑStormwater Drainage ƑExperimental Technology ƑSubsidence Control ƑGeothermal (Closed Loop)ƑTracer ƑGeothermal (Heating/Cooling Return) ƑOther (explain under #21 Remarks) 4. Date Well(s) Completed: Well ID# 5a. Well Location: Facility/Owner Name Facility ID# (if applicable) Physical Address, City, and Zip County Parcel Identification No. (PIN) 5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient) N W 6. Is(are) the well(s): ƑPermanent or ƑTemporary 7. Is this a repair to an existing well: ƑYes or ƑNo If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form. 8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wellsdrilled: 9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100ƍ) 10. Static water level below top of casing: (ft.) If water level is above casing, use “+” 11. Borehole diameter: (in.) 12. Well construction method:(i.e. auger, rotary, cable, direct push, etc.) FOR WATER SUPPLY WELLS ONLY: 13a. Yield (gpm) Method of test: 13b. Disinfection type: Amount: 14. WATER ZONES FROM TO DESCRIPTION ft.ft. ft.ft. 15. OUTER CASING (for multi-cased wells) OR LINER (if applicable) FROM TO DIAMETER THICKNESS MATERIAL ft.ft.in. 16. INNER CASING OR TUBING (geothermal closed-loop) FROM TO DIAMETER THICKNESS MATERIAL ft.ft.in. ft.ft.in. 17. SCREEN FROM TO DIAMETER SLOT SIZE THICKNESS MATERIAL ft.ft.in. ft.ft.in. 18. GROUT FROM TO MATERIAL EMPLACEMENT METHOD & AMOUNT ft.ft. ft.ft. ft.ft. 19. SAND/GRAVEL PACK (if applicable) FROM TO MATERIAL EMPLACEMENT METHOD ft.ft. ft.ft. 20. DRILLING LOG (attach additional sheets if necessary) FROM TO DESCRIPTION (color, hardness, soil/rock type, grain size, etc.) ft.ft. ft.ft. ft.ft. ft.ft. ft.ft. ft.ft. ft.ft. 21. REMARKS 22. Certification: Signature of Certified Well Contractor Date By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner. Site diagram or additional well details:You may use the back of this page to provide additional ZHOOFRQVWUXFWLRQLQIRDGG 6HH2YHU LQ5HPDUNV%R[<RXPD\DOVRDWWDFKDGGLWLRQDOSDJHVLIQHFHVVDU\ SUBMITTAL INSTRUCTIONS Submit this GW-1 within 30 days of well completion per the following: 24a. For All Wells:Original form to Division of Water Resources (DWR),Information Processing Unit, 1617 MSC, Raleigh, NC 27699-1617 24b. For Injection Wells:Copy to DWR, Underground Injection Control (IUC)Program, 1636 MSC, Raleigh, NC 27699-1636 24c. For Water Supply and Open-Loop Geothermal Return Wells: Copy to the county environmental health department of the county where installed 24d. For Water Wells producing over 100,000 GPD: Copy to DWR, CCPCUAPermit Program, 1611 MSC, Raleigh, NC 27699-1611 JOHNNY BURR A - 3098 GEOLOGIC EXPLORATION 0.0 12.0 SCH 40 12.0 42.0 .010 ● 0.0 PORTLAND BENTONITE 8.0 20-40 0.0 GRAVEL/TOPSOIL 07/13/22 MW-12 1.0 BROWN/GRAY PWR NCDOT MAINTENANCE YARD 5426 NC - 141 MARBLE 28905 CHEROKEE BENTONITE SEAL ~ 6.0 - 8.0 FEET 35° 08' 17.81" 83° 55' 31.71"07/29/22 ● 42.0 25.0 6.0 AIR PVC SCH 40 PVC 2.0 2.0 6.0 42.0 1.0 42.0 FINE SILICA SAND SLURRY WELL CONSTRUCTION RECORD (GW-1)For Internal Use Only: Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 6-6-2018 1. Well Contractor Information: Well Contractor Name NC Well Contractor Certification Number Company Name 2. Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.) 3. Well Use (check well use): Water Supply Well: ƑAgricultural ƑMunicipal/Public ƑGeothermal (Heating/Cooling Supply)ƑResidential Water Supply (single) ƑIndustrial/Commercial ƑResidential Water Supply (shared) ƑIrrigation ƑWells > 100,000 GPD Non-Water Supply Well: ƑMonitoring ƑRecovery Injection Well: ƑAquifer Recharge ƑGroundwater Remediation ƑAquifer Storage and Recovery ƑSalinity Barrier ƑAquifer Test ƑStormwater Drainage ƑExperimental Technology ƑSubsidence Control ƑGeothermal (Closed Loop)ƑTracer ƑGeothermal (Heating/Cooling Return) ƑOther (explain under #21 Remarks) 4. Date Well(s) Completed: Well ID# 5a. Well Location: Facility/Owner Name Facility ID# (if applicable) Physical Address, City, and Zip County Parcel Identification No. (PIN) 5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient) N W 6. Is(are) the well(s): ƑPermanent or ƑTemporary 7. Is this a repair to an existing well: ƑYes or ƑNo If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form. 8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wellsdrilled: 9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100ƍ) 10. Static water level below top of casing: (ft.) If water level is above casing, use “+” 11. Borehole diameter: (in.) 12. Well construction method:(i.e. auger, rotary, cable, direct push, etc.) FOR WATER SUPPLY WELLS ONLY: 13a. Yield (gpm) Method of test: 13b. Disinfection type: Amount: 14. WATER ZONES FROM TO DESCRIPTION ft.ft. ft.ft. 15. OUTER CASING (for multi-cased wells) OR LINER (if applicable) FROM TO DIAMETER THICKNESS MATERIAL ft.ft.in. 16. INNER CASING OR TUBING (geothermal closed-loop) FROM TO DIAMETER THICKNESS MATERIAL ft.ft.in. ft.ft.in. 17. SCREEN FROM TO DIAMETER SLOT SIZE THICKNESS MATERIAL ft.ft.in. ft.ft.in. 18. GROUT FROM TO MATERIAL EMPLACEMENT METHOD & AMOUNT ft.ft. ft.ft. ft.ft. 19. SAND/GRAVEL PACK (if applicable) FROM TO MATERIAL EMPLACEMENT METHOD ft.ft. ft.ft. 20. DRILLING LOG (attach additional sheets if necessary) FROM TO DESCRIPTION (color, hardness, soil/rock type, grain size, etc.) ft.ft. ft.ft. ft.ft. ft.ft. ft.ft. ft.ft. ft.ft. 21. REMARKS 22. Certification: Signature of Certified Well Contractor Date By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner. Site diagram or additional well details:You may use the back of this page to provide additional ZHOOFRQVWUXFWLRQLQIRDGG 6HH2YHU LQ5HPDUNV%R[<RXPD\DOVRDWWDFKDGGLWLRQDOSDJHVLIQHFHVVDU\ SUBMITTAL INSTRUCTIONS Submit this GW-1 within 30 days of well completion per the following: 24a. For All Wells:Original form to Division of Water Resources (DWR),Information Processing Unit, 1617 MSC, Raleigh, NC 27699-1617 24b. For Injection Wells:Copy to DWR, Underground Injection Control (IUC)Program, 1636 MSC, Raleigh, NC 27699-1636 24c. For Water Supply and Open-Loop Geothermal Return Wells: Copy to the county environmental health department of the county where installed 24d. For Water Wells producing over 100,000 GPD: Copy to DWR, CCPCUAPermit Program, 1611 MSC, Raleigh, NC 27699-1611 JOHNNY BURR A - 3098 GEOLOGIC EXPLORATION 0.0 53.0 SCH 40 53.0 63.0 .010 ● 0.0 PORTLAND BENTONITE 50.0 20-40 0.0 BROWN PWR 07/13/22 MW-13 NCDOT MAINTENANCE YARD 5426 NC - 141 MARBLE 28905 CHEROKEE BENTONITE SEAL ~ 40.0 - 50.0 FEET 35° 08' 17.81" 83° 55' 31.71"07/29/22 ● 63.0 27.0 6.0 AIR PVC SCH 40 PVC 2.0 2.0 40.0 63.0 63.0 FINE SILICA SAND SLURRY Robert Miller 2675 SAEDACCO Inc X 12-6-21 DW-1 NC DOT 5426 NC-141, Marble, NC, 28905 Cherokee X X 1 125 8"/6" 8"/6" Air Hammer 0 103 6" SCH-40 PVC 0 110 2" SCH-40 PVC 110 125 2" .010 SCH-40 PVC 0 103 0 102 Portland/BenUPOJUF Portland/#FOUPOJUF 108' 125' Silica Sand 20/30 0 60' Tan Silty sand 60' 125' weathered rock six foot bentonite seal from 102' to 108' 12/16/2021 Robert Miller 2675 SAEDACCO Inc X 12-9-21 DW-2 NC DOT 5426 NC-141 , Marble, NC, 28905 Cherokee X X 1 124 8"/6" 8"/6" Air Hammer 0 103 6" SCH-40 PVC 0 109 2" SCH-40 PVC 109 124 2" .010 SCH-40 PVC 0 103 0 102 Portland/#FOUPOJUF Portland/#FOUPOJUF 107 124 Silica Sand 20/30 0 60 Tan Silty sand 60 124 weathered rock five foot bentonite seal from 102' to 107' 12/16/2021 Appendix C Laboratory Analytical Data Sheets #=CL# August 17, 2023 LIMS USE: FR - DAVID GRAHAM LIMS OBJECT ID: 92682090 92682090 Project: Pace Project No.: RE: David Graham Hart & Hickman 2923 S. Tryon Street Charlotte, NC 28203 DOT-470 Dear David Graham: Enclosed are the analytical results for sample(s) received by the laboratory on August 10, 2023. The results relate only to the samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report. The test results provided in this final report were generated by each of the following laboratories within the Pace Network: • Pace Analytical Services - Charlotte If you have any questions concerning this report, please feel free to contact me. Sincerely, Taylor M Cannon taylor.cannon@pacelabs.com Project Manager (704)875-9092 Enclosures REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 1 of 57 #=CP# CERTIFICATIONS Pace Project No.: Project: 92682090 DOT-470 Pace Analytical Services Charlotte South Carolina Laboratory ID: 99006 9800 Kincey Ave. Ste 100, Huntersville, NC 28078 North Carolina Drinking Water Certification #: 37706 North Carolina Field Services Certification #: 5342 North Carolina Wastewater Certification #: 12 South Carolina Laboratory ID: 99006 South Carolina Certification #: 99006001 South Carolina Drinking Water Cert. #: 99006003 Florida/NELAP Certification #: E87627 Kentucky UST Certification #: 84 Louisiana DoH Drinking Water #: LA029 Virginia/VELAP Certification #: 460221 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 2 of 57 #=SS# SAMPLE SUMMARY Pace Project No.: Project: 92682090 DOT-470 Lab ID Sample ID Matrix Date Collected Date Received 92682090001 MW-1 Water 08/09/23 09:50 08/10/23 13:15 92682090002 MW-2 Water 08/08/23 11:30 08/10/23 13:15 92682090003 MW-4 Water 08/08/23 16:30 08/10/23 13:15 92682090004 MW-5 Water 08/09/23 10:45 08/10/23 13:15 92682090005 MW-6 Water 08/08/23 15:05 08/10/23 13:15 92682090006 MW-7 Water 08/09/23 12:05 08/10/23 13:15 92682090007 MW-8 Water 08/08/23 14:05 08/10/23 13:15 92682090008 MW-9 Water 08/08/23 16:20 08/10/23 13:15 92682090009 MW-10 Water 08/08/23 10:20 08/10/23 13:15 92682090010 MW-11 Water 08/09/23 11:35 08/10/23 13:15 92682090011 MW-12 Water 08/09/23 14:30 08/10/23 13:15 92682090012 MW-13 Water 08/09/23 14:35 08/10/23 13:15 92682090013 DW-1 Water 08/08/23 12:35 08/10/23 13:15 92682090014 DW-2 Water 08/08/23 10:35 08/10/23 13:15 92682090015 WS-1 Water 08/09/23 15:45 08/10/23 13:15 92682090016 WS-2 Water 08/09/23 16:05 08/10/23 13:15 92682090017 WS-3 Water 08/09/23 16:25 08/10/23 13:15 92682090018 KELLER WELL Water 08/09/23 15:25 08/10/23 13:15 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 3 of 57 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 92682090 DOT-470 Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts 92682090001 MW-1 SM 6200B 63 PASI-CSAS 92682090002 MW-2 SM 6200B 63 PASI-CLMB 92682090003 MW-4 SM 6200B 63 PASI-CSAS 92682090004 MW-5 SM 6200B 63 PASI-CSAS 92682090005 MW-6 SM 6200B 63 PASI-CSAS 92682090006 MW-7 SM 6200B 63 PASI-CSAS 92682090007 MW-8 SM 6200B 63 PASI-CSAS 92682090008 MW-9 SM 6200B 63 PASI-CSAS 92682090009 MW-10 SM 6200B 63 PASI-CSAS 92682090010 MW-11 SM 6200B 63 PASI-CSAS 92682090011 MW-12 SM 6200B 63 PASI-CSAS 92682090012 MW-13 SM 6200B 63 PASI-CSAS 92682090013 DW-1 SM 6200B 63 PASI-CSAS 92682090014 DW-2 SM 6200B 63 PASI-CSAS 92682090015 WS-1 SM 6200B 63 PASI-CSAS 92682090016 WS-2 SM 6200B 63 PASI-CSAS 92682090017 WS-3 SM 6200B 63 PASI-CSAS 92682090018 KELLER WELL SM 6200B 63 PASI-CSAS PASI-C = Pace Analytical Services - Charlotte REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 4 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-1 Lab ID:92682090001 Collected:08/09/23 09:50 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 08/12/23 01:21 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 01:21 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 01:21 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 01:21 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 01:21 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 01:21 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 01:21 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 01:21 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 01:21 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 01:21 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 01:21 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 01:21 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 01:21 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 01:21 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 01:21 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 01:21 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 01:21 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 01:21 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 01:21 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 01:21 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 01:21 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 01:21 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 01:21 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 01:21 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 01:21 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 01:21 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 01:21 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 01:21 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 01:21 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 01:21 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 01:21 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 01:21 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 01:21 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 01:21 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 01:21 10061-02-60.50 0.13 1 Diisopropyl ether ND ug/L 08/12/23 01:21 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 01:21 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 01:21 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 01:21 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 01:21 75-09-22.0 1.9 1 Methyl-tert-butyl ether 1.1 ug/L 08/12/23 01:21 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 01:21 91-20-32.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 01:21 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 01:21 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 01:21 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 5 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-1 Lab ID:92682090001 Collected:08/09/23 09:50 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 01:21 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 01:21 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 01:21 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 01:21 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 01:21 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 01:21 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 01:21 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 01:21 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 01:21 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 01:21 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 01:21 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 01:21 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 01:21 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 01:21 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 01:21 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)99 %08/12/23 01:21 17060-07-070-130 1 4-Bromofluorobenzene (S)97 %08/12/23 01:21 460-00-470-130 1 Toluene-d8 (S)95 %08/12/23 01:21 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 6 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-2 Lab ID:92682090002 Collected:08/08/23 11:30 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene 183 ug/L 08/15/23 20:53 71-43-22.0 0.31 4 Bromobenzene ND ug/L 08/15/23 20:53 108-86-12.0 0.54 4 Bromochloromethane ND ug/L 08/15/23 20:53 74-97-52.0 0.38 4 Bromodichloromethane ND ug/L 08/15/23 20:53 75-27-42.0 0.68 4 Bromoform ND ug/L 08/15/23 20:53 75-25-22.0 0.79 4 Bromomethane ND ug/L 08/15/23 20:53 74-83-920.0 0.89 4 n-Butylbenzene ND ug/L 08/15/23 20:53 104-51-82.0 0.27 4 sec-Butylbenzene ND ug/L 08/15/23 20:53 135-98-82.0 0.34 4 tert-Butylbenzene ND ug/L 08/15/23 20:53 98-06-62.0 0.34 4 Carbon tetrachloride ND ug/L 08/15/23 20:53 56-23-52.0 0.68 4 Chlorobenzene ND ug/L 08/15/23 20:53 108-90-72.0 0.34 4 Chloroethane ND ug/L 08/15/23 20:53 75-00-34.0 0.69 4 Chloroform ND ug/L 08/15/23 20:53 67-66-32.0 0.28 4 Chloromethane ND ug/L 08/15/23 20:53 74-87-34.0 0.70 4 2-Chlorotoluene ND ug/L 08/15/23 20:53 95-49-82.0 0.52 4 4-Chlorotoluene ND ug/L 08/15/23 20:53 106-43-42.0 0.38 4 1,2-Dibromo-3-chloropropane ND ug/L 08/15/23 20:53 96-12-84.0 0.72 4 Dibromochloromethane ND ug/L 08/15/23 20:53 124-48-12.0 0.59 4 1,2-Dibromoethane (EDB)ND ug/L 08/15/23 20:53 106-93-42.0 0.59 4 Dibromomethane ND ug/L 08/15/23 20:53 74-95-32.0 0.75 4 1,2-Dichlorobenzene ND ug/L 08/15/23 20:53 95-50-12.0 0.38 4 1,3-Dichlorobenzene ND ug/L 08/15/23 20:53 541-73-12.0 0.39 4 1,4-Dichlorobenzene ND ug/L 08/15/23 20:53 106-46-72.0 0.36 4 Dichlorodifluoromethane ND ug/L 08/15/23 20:53 75-71-82.0 0.49 4 1,1-Dichloroethane ND ug/L 08/15/23 20:53 75-34-32.0 0.22 4 1,2-Dichloroethane ND ug/L 08/15/23 20:53 107-06-22.0 0.42 4 1,1-Dichloroethene ND ug/L 08/15/23 20:53 75-35-42.0 0.31 4 cis-1,2-Dichloroethene ND ug/L 08/15/23 20:53 156-59-22.0 0.44 4 trans-1,2-Dichloroethene ND ug/L 08/15/23 20:53 156-60-52.0 0.40 4 1,2-Dichloropropane ND ug/L 08/15/23 20:53 78-87-52.0 0.54 4 1,3-Dichloropropane ND ug/L 08/15/23 20:53 142-28-92.0 0.34 4 2,2-Dichloropropane ND ug/L 08/15/23 20:53 594-20-72.0 0.49 4 1,1-Dichloropropene ND ug/L 08/15/23 20:53 563-58-62.0 0.26 4 cis-1,3-Dichloropropene ND ug/L 08/15/23 20:53 10061-01-52.0 0.36 4 trans-1,3-Dichloropropene ND ug/L 08/15/23 20:53 10061-02-62.0 0.53 4 Diisopropyl ether ND ug/L 08/15/23 20:53 108-20-32.0 0.29 4 Ethylbenzene 99.7 ug/L 08/15/23 20:53 100-41-42.0 0.32 4 Hexachloro-1,3-butadiene ND ug/L 08/15/23 20:53 87-68-38.0 1.4 4 Isopropylbenzene (Cumene)20.9 ug/L 08/15/23 20:53 98-82-82.0 0.42 4 Methylene Chloride ND ug/L 08/15/23 20:53 75-09-28.0 7.6 4 Methyl-tert-butyl ether 16.5 ug/L 08/15/23 20:53 1634-04-42.0 0.21 4 Naphthalene 224 ug/L 08/15/23 20:53 91-20-38.0 0.40 4 n-Propylbenzene 69.4 ug/L 08/15/23 20:53 103-65-12.0 0.42 4 Styrene 2.2 ug/L 08/15/23 20:53 100-42-52.0 0.55 4 1,1,1,2-Tetrachloroethane ND ug/L 08/15/23 20:53 630-20-62.0 0.36 4 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 7 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-2 Lab ID:92682090002 Collected:08/08/23 11:30 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/15/23 20:53 79-34-52.0 0.30 4 Tetrachloroethene ND ug/L 08/15/23 20:53 127-18-42.0 0.34 4 Toluene 26.0 ug/L 08/15/23 20:53 108-88-32.0 0.36 4 1,2,3-Trichlorobenzene ND ug/L 08/15/23 20:53 87-61-68.0 0.48 4 1,2,4-Trichlorobenzene ND ug/L 08/15/23 20:53 120-82-18.0 0.62 4 1,1,1-Trichloroethane ND ug/L 08/15/23 20:53 71-55-62.0 0.43 4 1,1,2-Trichloroethane ND ug/L 08/15/23 20:53 79-00-52.0 0.38 4 Trichloroethene ND ug/L 08/15/23 20:53 79-01-62.0 0.68 4 Trichlorofluoromethane ND ug/L 08/15/23 20:53 75-69-44.0 0.58 4 1,2,3-Trichloropropane ND ug/L 08/15/23 20:53 96-18-42.0 0.69 4 1,2,4-Trimethylbenzene 397 ug/L 08/15/23 20:53 95-63-62.0 0.12 4 1,3,5-Trimethylbenzene 123 ug/L 08/15/23 20:53 108-67-82.0 0.29 4 Vinyl chloride ND ug/L 08/15/23 20:53 75-01-44.0 0.60 4 m&p-Xylene 318 ug/L 08/15/23 20:53 179601-23-14.0 0.37 4 o-Xylene 61.0 ug/L 08/15/23 20:53 95-47-62.0 0.58 4 Surrogates 1,2-Dichloroethane-d4 (S)96 %08/15/23 20:53 17060-07-070-130 4 4-Bromofluorobenzene (S)100 %08/15/23 20:53 460-00-470-130 4 Toluene-d8 (S)99 %08/15/23 20:53 2037-26-570-130 4 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 8 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-4 Lab ID:92682090003 Collected:08/08/23 16:30 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 08/12/23 01:39 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 01:39 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 01:39 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 01:39 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 01:39 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 01:39 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 01:39 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 01:39 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 01:39 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 01:39 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 01:39 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 01:39 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 01:39 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 01:39 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 01:39 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 01:39 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 01:39 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 01:39 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 01:39 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 01:39 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 01:39 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 01:39 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 01:39 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 01:39 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 01:39 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 01:39 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 01:39 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 01:39 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 01:39 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 01:39 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 01:39 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 01:39 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 01:39 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 01:39 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 01:39 10061-02-60.50 0.13 1 Diisopropyl ether ND ug/L 08/12/23 01:39 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 01:39 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 01:39 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 01:39 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 01:39 75-09-22.0 1.9 1 Methyl-tert-butyl ether ND ug/L 08/12/23 01:39 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 01:39 91-20-32.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 01:39 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 01:39 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 01:39 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 9 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-4 Lab ID:92682090003 Collected:08/08/23 16:30 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 01:39 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 01:39 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 01:39 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 01:39 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 01:39 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 01:39 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 01:39 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 01:39 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 01:39 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 01:39 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 01:39 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 01:39 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 01:39 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 01:39 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 01:39 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)100 %08/12/23 01:39 17060-07-070-130 1 4-Bromofluorobenzene (S)96 %08/12/23 01:39 460-00-470-130 1 Toluene-d8 (S)94 %08/12/23 01:39 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 10 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-5 Lab ID:92682090004 Collected:08/09/23 10:45 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene 2.0 ug/L 08/12/23 01:57 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 01:57 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 01:57 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 01:57 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 01:57 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 01:57 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 01:57 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 01:57 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 01:57 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 01:57 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 01:57 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 01:57 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 01:57 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 01:57 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 01:57 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 01:57 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 01:57 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 01:57 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 01:57 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 01:57 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 01:57 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 01:57 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 01:57 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 01:57 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 01:57 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 01:57 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 01:57 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 01:57 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 01:57 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 01:57 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 01:57 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 01:57 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 01:57 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 01:57 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 01:57 10061-02-60.50 0.13 1 Diisopropyl ether 8.4 ug/L 08/12/23 01:57 108-20-30.50 0.072 1 Ethylbenzene 3.3 ug/L 08/12/23 01:57 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 01:57 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 01:57 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 01:57 75-09-22.0 1.9 1 Methyl-tert-butyl ether 5.4 ug/L 08/12/23 01:57 1634-04-40.50 0.053 1 Naphthalene 0.40J ug/L 08/12/23 01:57 91-20-32.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 01:57 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 01:57 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 01:57 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 11 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-5 Lab ID:92682090004 Collected:08/09/23 10:45 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 01:57 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 01:57 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 01:57 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 01:57 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 01:57 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 01:57 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 01:57 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 01:57 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 01:57 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 01:57 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene 1.9 ug/L 08/12/23 01:57 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 01:57 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 01:57 75-01-41.0 0.15 1 m&p-Xylene 0.55J ug/L 08/12/23 01:57 179601-23-11.0 0.094 1 o-Xylene 0.56 ug/L 08/12/23 01:57 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)100 %08/12/23 01:57 17060-07-070-130 1 4-Bromofluorobenzene (S)96 %08/12/23 01:57 460-00-470-130 1 Toluene-d8 (S)95 %08/12/23 01:57 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 12 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-6 Lab ID:92682090005 Collected:08/08/23 15:05 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 08/12/23 02:15 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 02:15 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 02:15 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 02:15 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 02:15 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 02:15 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 02:15 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 02:15 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 02:15 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 02:15 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 02:15 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 02:15 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 02:15 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 02:15 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 02:15 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 02:15 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 02:15 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 02:15 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 02:15 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 02:15 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 02:15 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 02:15 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 02:15 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 02:15 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 02:15 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 02:15 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 02:15 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 02:15 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 02:15 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 02:15 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 02:15 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 02:15 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 02:15 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 02:15 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 02:15 10061-02-60.50 0.13 1 Diisopropyl ether 7.7 ug/L 08/12/23 02:15 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 02:15 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 02:15 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 02:15 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 02:15 75-09-22.0 1.9 1 Methyl-tert-butyl ether 4.6 ug/L 08/12/23 02:15 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 02:15 91-20-32.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 02:15 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 02:15 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 02:15 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 13 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-6 Lab ID:92682090005 Collected:08/08/23 15:05 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 02:15 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 02:15 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 02:15 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 02:15 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 02:15 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 02:15 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 02:15 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 02:15 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 02:15 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 02:15 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 02:15 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 02:15 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 02:15 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 02:15 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 02:15 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)99 %08/12/23 02:15 17060-07-070-130 1 4-Bromofluorobenzene (S)97 %08/12/23 02:15 460-00-470-130 1 Toluene-d8 (S)96 %08/12/23 02:15 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 14 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-7 Lab ID:92682090006 Collected:08/09/23 12:05 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 08/12/23 02:34 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 02:34 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 02:34 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 02:34 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 02:34 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 02:34 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 02:34 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 02:34 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 02:34 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 02:34 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 02:34 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 02:34 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 02:34 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 02:34 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 02:34 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 02:34 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 02:34 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 02:34 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 02:34 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 02:34 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 02:34 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 02:34 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 02:34 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 02:34 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 02:34 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 02:34 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 02:34 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 02:34 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 02:34 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 02:34 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 02:34 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 02:34 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 02:34 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 02:34 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 02:34 10061-02-60.50 0.13 1 Diisopropyl ether ND ug/L 08/12/23 02:34 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 02:34 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 02:34 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 02:34 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 02:34 75-09-22.0 1.9 1 Methyl-tert-butyl ether 0.41J ug/L 08/12/23 02:34 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 02:34 91-20-32.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 02:34 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 02:34 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 02:34 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 15 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-7 Lab ID:92682090006 Collected:08/09/23 12:05 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 02:34 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 02:34 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 02:34 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 02:34 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 02:34 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 02:34 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 02:34 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 02:34 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 02:34 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 02:34 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 02:34 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 02:34 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 02:34 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 02:34 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 02:34 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)99 %08/12/23 02:34 17060-07-070-130 1 4-Bromofluorobenzene (S)98 %08/12/23 02:34 460-00-470-130 1 Toluene-d8 (S)96 %08/12/23 02:34 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 16 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-8 Lab ID:92682090007 Collected:08/08/23 14:05 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene 2180 ug/L 08/12/23 06:49 71-43-26.2 0.98 12.5 Bromobenzene ND ug/L 08/12/23 06:49 108-86-16.2 1.7 12.5 Bromochloromethane ND ug/L 08/12/23 06:49 74-97-56.2 1.2 12.5 Bromodichloromethane ND ug/L 08/12/23 06:49 75-27-46.2 2.1 12.5 Bromoform ND ug/L 08/12/23 06:49 75-25-26.2 2.5 12.5 Bromomethane ND ug/L 08/12/23 06:49 74-83-962.5 2.8 12.5 n-Butylbenzene ND ug/L 08/12/23 06:49 104-51-86.2 0.83 12.5 sec-Butylbenzene ND ug/L 08/12/23 06:49 135-98-86.2 1.1 12.5 tert-Butylbenzene ND ug/L 08/12/23 06:49 98-06-66.2 1.1 12.5 Carbon tetrachloride ND ug/L 08/12/23 06:49 56-23-56.2 2.1 12.5 Chlorobenzene ND ug/L 08/12/23 06:49 108-90-76.2 1.1 12.5 Chloroethane ND ug/L 08/12/23 06:49 75-00-312.5 2.2 12.5 Chloroform ND ug/L 08/12/23 06:49 67-66-36.2 0.86 12.5 Chloromethane ND ug/L 08/12/23 06:49 74-87-312.5 2.2 12.5 2-Chlorotoluene ND ug/L 08/12/23 06:49 95-49-86.2 1.6 12.5 4-Chlorotoluene ND ug/L 08/12/23 06:49 106-43-46.2 1.2 12.5 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 06:49 96-12-812.5 2.2 12.5 Dibromochloromethane ND ug/L 08/12/23 06:49 124-48-16.2 1.8 12.5 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 06:49 106-93-46.2 1.8 12.5 Dibromomethane ND ug/L 08/12/23 06:49 74-95-36.2 2.3 12.5 1,2-Dichlorobenzene ND ug/L 08/12/23 06:49 95-50-16.2 1.2 12.5 1,3-Dichlorobenzene ND ug/L 08/12/23 06:49 541-73-16.2 1.2 12.5 1,4-Dichlorobenzene ND ug/L 08/12/23 06:49 106-46-76.2 1.1 12.5 Dichlorodifluoromethane ND ug/L 08/12/23 06:49 75-71-86.2 1.5 12.5 1,1-Dichloroethane ND ug/L 08/12/23 06:49 75-34-36.2 0.70 12.5 1,2-Dichloroethane ND ug/L 08/12/23 06:49 107-06-26.2 1.3 12.5 1,1-Dichloroethene ND ug/L 08/12/23 06:49 75-35-46.2 0.98 12.5 cis-1,2-Dichloroethene ND ug/L 08/12/23 06:49 156-59-26.2 1.4 12.5 trans-1,2-Dichloroethene ND ug/L 08/12/23 06:49 156-60-56.2 1.3 12.5 1,2-Dichloropropane ND ug/L 08/12/23 06:49 78-87-56.2 1.7 12.5 1,3-Dichloropropane ND ug/L 08/12/23 06:49 142-28-96.2 1.1 12.5 2,2-Dichloropropane ND ug/L 08/12/23 06:49 594-20-76.2 1.5 12.5 1,1-Dichloropropene ND ug/L 08/12/23 06:49 563-58-66.2 0.82 12.5 cis-1,3-Dichloropropene ND ug/L 08/12/23 06:49 10061-01-56.2 1.1 12.5 trans-1,3-Dichloropropene ND ug/L 08/12/23 06:49 10061-02-66.2 1.6 12.5 Diisopropyl ether 612 ug/L 08/12/23 06:49 108-20-36.2 0.91 12.5 Ethylbenzene 334 ug/L 08/12/23 06:49 100-41-46.2 1.0 12.5 Hexachloro-1,3-butadiene ND ug/L 08/12/23 06:49 87-68-325.0 4.4 12.5 Isopropylbenzene (Cumene)52.2 ug/L 08/12/23 06:49 98-82-86.2 1.3 12.5 Methylene Chloride ND ug/L 08/12/23 06:49 75-09-225.0 23.6 12.5 Methyl-tert-butyl ether 321 ug/L 08/12/23 06:49 1634-04-46.2 0.67 12.5 Naphthalene 629 ug/L 08/12/23 06:49 91-20-325.0 1.3 12.5 n-Propylbenzene 145 ug/L 08/12/23 06:49 103-65-16.2 1.3 12.5 Styrene 3.4J ug/L 08/12/23 06:49 100-42-56.2 1.7 12.5 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 06:49 630-20-66.2 1.1 12.5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 17 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-8 Lab ID:92682090007 Collected:08/08/23 14:05 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 06:49 79-34-56.2 0.92 12.5 Tetrachloroethene ND ug/L 08/12/23 06:49 127-18-46.2 1.1 12.5 Toluene 150 ug/L 08/12/23 06:49 108-88-36.2 1.1 12.5 1,2,3-Trichlorobenzene ND ug/L 08/12/23 06:49 87-61-625.0 1.5 12.5 1,2,4-Trichlorobenzene ND ug/L 08/12/23 06:49 120-82-125.0 2.0 12.5 1,1,1-Trichloroethane ND ug/L 08/12/23 06:49 71-55-66.2 1.3 12.5 1,1,2-Trichloroethane ND ug/L 08/12/23 06:49 79-00-56.2 1.2 12.5 Trichloroethene ND ug/L 08/12/23 06:49 79-01-66.2 2.1 12.5 Trichlorofluoromethane ND ug/L 08/12/23 06:49 75-69-412.5 1.8 12.5 1,2,3-Trichloropropane ND ug/L 08/12/23 06:49 96-18-46.2 2.2 12.5 1,2,4-Trimethylbenzene 515 ug/L 08/12/23 06:49 95-63-66.2 0.38 12.5 1,3,5-Trimethylbenzene 92.0 ug/L 08/12/23 06:49 108-67-86.2 0.89 12.5 Vinyl chloride ND ug/L 08/12/23 06:49 75-01-412.5 1.9 12.5 m&p-Xylene 585 ug/L 08/12/23 06:49 179601-23-112.5 1.2 12.5 o-Xylene 107 ug/L 08/12/23 06:49 95-47-66.2 1.8 12.5 Surrogates 1,2-Dichloroethane-d4 (S)95 %08/12/23 06:49 17060-07-070-130 12.5 4-Bromofluorobenzene (S)98 %08/12/23 06:49 460-00-470-130 12.5 Toluene-d8 (S)97 %08/12/23 06:49 2037-26-570-130 12.5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 18 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-9 Lab ID:92682090008 Collected:08/08/23 16:20 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 08/12/23 02:52 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 02:52 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 02:52 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 02:52 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 02:52 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 02:52 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 02:52 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 02:52 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 02:52 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 02:52 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 02:52 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 02:52 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 02:52 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 02:52 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 02:52 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 02:52 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 02:52 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 02:52 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 02:52 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 02:52 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 02:52 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 02:52 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 02:52 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 02:52 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 02:52 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 02:52 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 02:52 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 02:52 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 02:52 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 02:52 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 02:52 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 02:52 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 02:52 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 02:52 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 02:52 10061-02-60.50 0.13 1 Diisopropyl ether ND ug/L 08/12/23 02:52 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 02:52 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 02:52 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 02:52 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 02:52 75-09-22.0 1.9 1 Methyl-tert-butyl ether ND ug/L 08/12/23 02:52 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 02:52 91-20-32.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 02:52 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 02:52 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 02:52 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 19 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-9 Lab ID:92682090008 Collected:08/08/23 16:20 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 02:52 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 02:52 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 02:52 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 02:52 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 02:52 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 02:52 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 02:52 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 02:52 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 02:52 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 02:52 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 02:52 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 02:52 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 02:52 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 02:52 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 02:52 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)96 %08/12/23 02:52 17060-07-070-130 1 4-Bromofluorobenzene (S)97 %08/12/23 02:52 460-00-470-130 1 Toluene-d8 (S)95 %08/12/23 02:52 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 20 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-10 Lab ID:92682090009 Collected:08/08/23 10:20 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene 202 ug/L 08/12/23 06:13 71-43-25.0 0.79 10 Bromobenzene ND ug/L 08/12/23 06:13 108-86-15.0 1.4 10 Bromochloromethane ND ug/L 08/12/23 06:13 74-97-55.0 0.94 10 Bromodichloromethane ND ug/L 08/12/23 06:13 75-27-45.0 1.7 10 Bromoform ND ug/L 08/12/23 06:13 75-25-25.0 2.0 10 Bromomethane ND ug/L 08/12/23 06:13 74-83-950.0 2.2 10 n-Butylbenzene ND ug/L 08/12/23 06:13 104-51-85.0 0.66 10 sec-Butylbenzene ND ug/L 08/12/23 06:13 135-98-85.0 0.85 10 tert-Butylbenzene ND ug/L 08/12/23 06:13 98-06-65.0 0.86 10 Carbon tetrachloride ND ug/L 08/12/23 06:13 56-23-55.0 1.7 10 Chlorobenzene ND ug/L 08/12/23 06:13 108-90-75.0 0.85 10 Chloroethane ND ug/L 08/12/23 06:13 75-00-310.0 1.7 10 Chloroform ND ug/L 08/12/23 06:13 67-66-35.0 0.69 10 Chloromethane ND ug/L 08/12/23 06:13 74-87-310.0 1.8 10 2-Chlorotoluene ND ug/L 08/12/23 06:13 95-49-85.0 1.3 10 4-Chlorotoluene ND ug/L 08/12/23 06:13 106-43-45.0 0.96 10 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 06:13 96-12-810.0 1.8 10 Dibromochloromethane ND ug/L 08/12/23 06:13 124-48-15.0 1.5 10 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 06:13 106-93-45.0 1.5 10 Dibromomethane ND ug/L 08/12/23 06:13 74-95-35.0 1.9 10 1,2-Dichlorobenzene ND ug/L 08/12/23 06:13 95-50-15.0 0.94 10 1,3-Dichlorobenzene ND ug/L 08/12/23 06:13 541-73-15.0 0.98 10 1,4-Dichlorobenzene ND ug/L 08/12/23 06:13 106-46-75.0 0.90 10 Dichlorodifluoromethane ND ug/L 08/12/23 06:13 75-71-85.0 1.2 10 1,1-Dichloroethane ND ug/L 08/12/23 06:13 75-34-35.0 0.56 10 1,2-Dichloroethane ND ug/L 08/12/23 06:13 107-06-25.0 1.1 10 1,1-Dichloroethene ND ug/L 08/12/23 06:13 75-35-45.0 0.79 10 cis-1,2-Dichloroethene ND ug/L 08/12/23 06:13 156-59-25.0 1.1 10 trans-1,2-Dichloroethene ND ug/L 08/12/23 06:13 156-60-55.0 1.0 10 1,2-Dichloropropane ND ug/L 08/12/23 06:13 78-87-55.0 1.4 10 1,3-Dichloropropane ND ug/L 08/12/23 06:13 142-28-95.0 0.85 10 2,2-Dichloropropane ND ug/L 08/12/23 06:13 594-20-75.0 1.2 10 1,1-Dichloropropene ND ug/L 08/12/23 06:13 563-58-65.0 0.66 10 cis-1,3-Dichloropropene ND ug/L 08/12/23 06:13 10061-01-55.0 0.90 10 trans-1,3-Dichloropropene ND ug/L 08/12/23 06:13 10061-02-65.0 1.3 10 Diisopropyl ether 68.5 ug/L 08/12/23 06:13 108-20-35.0 0.72 10 Ethylbenzene 187 ug/L 08/12/23 06:13 100-41-45.0 0.81 10 Hexachloro-1,3-butadiene ND ug/L 08/12/23 06:13 87-68-320.0 3.5 10 Isopropylbenzene (Cumene)44.6 ug/L 08/12/23 06:13 98-82-85.0 1.1 10 Methylene Chloride ND ug/L 08/12/23 06:13 75-09-220.0 18.9 10 Methyl-tert-butyl ether 46.1 ug/L 08/12/23 06:13 1634-04-45.0 0.53 10 Naphthalene 439 ug/L 08/12/23 06:13 91-20-320.0 1.0 10 n-Propylbenzene 154 ug/L 08/12/23 06:13 103-65-15.0 1.0 10 Styrene ND ug/L 08/12/23 06:13 100-42-55.0 1.4 10 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 06:13 630-20-65.0 0.91 10 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 21 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-10 Lab ID:92682090009 Collected:08/08/23 10:20 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 06:13 79-34-55.0 0.74 10 Tetrachloroethene ND ug/L 08/12/23 06:13 127-18-45.0 0.86 10 Toluene 15.9 ug/L 08/12/23 06:13 108-88-35.0 0.90 10 1,2,3-Trichlorobenzene ND ug/L 08/12/23 06:13 87-61-620.0 1.2 10 1,2,4-Trichlorobenzene ND ug/L 08/12/23 06:13 120-82-120.0 1.6 10 1,1,1-Trichloroethane ND ug/L 08/12/23 06:13 71-55-65.0 1.1 10 1,1,2-Trichloroethane ND ug/L 08/12/23 06:13 79-00-55.0 0.96 10 Trichloroethene ND ug/L 08/12/23 06:13 79-01-65.0 1.7 10 Trichlorofluoromethane ND ug/L 08/12/23 06:13 75-69-410.0 1.4 10 1,2,3-Trichloropropane ND ug/L 08/12/23 06:13 96-18-45.0 1.7 10 1,2,4-Trimethylbenzene 978 ug/L 08/12/23 06:13 95-63-65.0 0.31 10 1,3,5-Trimethylbenzene 300 ug/L 08/12/23 06:13 108-67-85.0 0.71 10 Vinyl chloride ND ug/L 08/12/23 06:13 75-01-410.0 1.5 10 m&p-Xylene 600 ug/L 08/12/23 06:13 179601-23-110.0 0.94 10 o-Xylene 84.0 ug/L 08/12/23 06:13 95-47-65.0 1.4 10 Surrogates 1,2-Dichloroethane-d4 (S)98 %08/12/23 06:13 17060-07-070-130 10 4-Bromofluorobenzene (S)98 %08/12/23 06:13 460-00-470-130 10 Toluene-d8 (S)96 %08/12/23 06:13 2037-26-570-130 10 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 22 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-11 Lab ID:92682090010 Collected:08/09/23 11:35 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene 0.80 ug/L 08/12/23 03:10 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 03:10 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 03:10 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 03:10 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 03:10 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 03:10 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 03:10 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 03:10 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 03:10 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 03:10 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 03:10 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 03:10 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 03:10 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 03:10 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 03:10 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 03:10 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 03:10 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 03:10 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 03:10 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 03:10 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 03:10 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 03:10 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 03:10 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 03:10 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 03:10 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 03:10 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 03:10 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 03:10 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 03:10 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 03:10 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 03:10 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 03:10 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 03:10 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 03:10 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 03:10 10061-02-60.50 0.13 1 Diisopropyl ether 2.2 ug/L 08/12/23 03:10 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 03:10 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 03:10 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 03:10 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 03:10 75-09-22.0 1.9 1 Methyl-tert-butyl ether 1.9 ug/L 08/12/23 03:10 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 03:10 91-20-32.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 03:10 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 03:10 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 03:10 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 23 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-11 Lab ID:92682090010 Collected:08/09/23 11:35 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 03:10 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 03:10 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 03:10 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 03:10 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 03:10 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 03:10 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 03:10 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 03:10 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 03:10 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 03:10 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 03:10 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 03:10 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 03:10 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 03:10 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 03:10 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)100 %08/12/23 03:10 17060-07-070-130 1 4-Bromofluorobenzene (S)96 %08/12/23 03:10 460-00-470-130 1 Toluene-d8 (S)96 %08/12/23 03:10 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 24 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-12 Lab ID:92682090011 Collected:08/09/23 14:30 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene 0.41J ug/L 08/12/23 03:28 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 03:28 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 03:28 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 03:28 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 03:28 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 03:28 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 03:28 104-51-80.50 0.066 1 sec-Butylbenzene 2.2 ug/L 08/12/23 03:28 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 03:28 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 03:28 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 03:28 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 03:28 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 03:28 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 03:28 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 03:28 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 03:28 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 03:28 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 03:28 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 03:28 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 03:28 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 03:28 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 03:28 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 03:28 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 03:28 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 03:28 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 03:28 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 03:28 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 03:28 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 03:28 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 03:28 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 03:28 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 03:28 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 03:28 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 03:28 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 03:28 10061-02-60.50 0.13 1 Diisopropyl ether 0.79 ug/L 08/12/23 03:28 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 03:28 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 03:28 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)1.2 ug/L 08/12/23 03:28 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 03:28 75-09-22.0 1.9 1 Methyl-tert-butyl ether 0.45J ug/L 08/12/23 03:28 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 03:28 91-20-32.0 0.10 1 n-Propylbenzene 2.9 ug/L 08/12/23 03:28 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 03:28 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 03:28 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 25 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-12 Lab ID:92682090011 Collected:08/09/23 14:30 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 03:28 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 03:28 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 03:28 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 03:28 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 03:28 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 03:28 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 03:28 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 03:28 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 03:28 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 03:28 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 03:28 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 03:28 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 03:28 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 03:28 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 03:28 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)99 %08/12/23 03:28 17060-07-070-130 1 4-Bromofluorobenzene (S)97 %08/12/23 03:28 460-00-470-130 1 Toluene-d8 (S)95 %08/12/23 03:28 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 26 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-13 Lab ID:92682090012 Collected:08/09/23 14:35 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 08/12/23 03:47 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 03:47 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 03:47 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 03:47 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 03:47 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 03:47 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 03:47 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 03:47 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 03:47 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 03:47 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 03:47 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 03:47 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 03:47 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 03:47 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 03:47 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 03:47 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 03:47 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 03:47 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 03:47 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 03:47 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 03:47 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 03:47 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 03:47 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 03:47 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 03:47 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 03:47 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 03:47 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 03:47 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 03:47 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 03:47 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 03:47 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 03:47 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 03:47 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 03:47 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 03:47 10061-02-60.50 0.13 1 Diisopropyl ether 0.13J ug/L 08/12/23 03:47 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 03:47 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 03:47 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 03:47 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 03:47 75-09-22.0 1.9 1 Methyl-tert-butyl ether 0.67 ug/L 08/12/23 03:47 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 03:47 91-20-32.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 03:47 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 03:47 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 03:47 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 27 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:MW-13 Lab ID:92682090012 Collected:08/09/23 14:35 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 03:47 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 03:47 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 03:47 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 03:47 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 03:47 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 03:47 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 03:47 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 03:47 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 03:47 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 03:47 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 03:47 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 03:47 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 03:47 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 03:47 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 03:47 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)98 %08/12/23 03:47 17060-07-070-130 1 4-Bromofluorobenzene (S)97 %08/12/23 03:47 460-00-470-130 1 Toluene-d8 (S)96 %08/12/23 03:47 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 28 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:DW-1 Lab ID:92682090013 Collected:08/08/23 12:35 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 08/12/23 04:05 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 04:05 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 04:05 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 04:05 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 04:05 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 04:05 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 04:05 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 04:05 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 04:05 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 04:05 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 04:05 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 04:05 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 04:05 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 04:05 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 04:05 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 04:05 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 04:05 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 04:05 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 04:05 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 04:05 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 04:05 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 04:05 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 04:05 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 04:05 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 04:05 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 04:05 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 04:05 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 04:05 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 04:05 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 04:05 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 04:05 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 04:05 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 04:05 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 04:05 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 04:05 10061-02-60.50 0.13 1 Diisopropyl ether ND ug/L 08/12/23 04:05 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 04:05 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 04:05 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 04:05 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 04:05 75-09-22.0 1.9 1 Methyl-tert-butyl ether 2.1 ug/L 08/12/23 04:05 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 04:05 91-20-32.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 04:05 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 04:05 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 04:05 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 29 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:DW-1 Lab ID:92682090013 Collected:08/08/23 12:35 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 04:05 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 04:05 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 04:05 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 04:05 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 04:05 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 04:05 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 04:05 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 04:05 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 04:05 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 04:05 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 04:05 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 04:05 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 04:05 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 04:05 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 04:05 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)100 %08/12/23 04:05 17060-07-070-130 1 4-Bromofluorobenzene (S)97 %08/12/23 04:05 460-00-470-130 1 Toluene-d8 (S)96 %08/12/23 04:05 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 30 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:DW-2 Lab ID:92682090014 Collected:08/08/23 10:35 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 08/12/23 04:23 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 04:23 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 04:23 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 04:23 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 04:23 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 04:23 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 04:23 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 04:23 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 04:23 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 04:23 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 04:23 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 04:23 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 04:23 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 04:23 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 04:23 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 04:23 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 04:23 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 04:23 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 04:23 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 04:23 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 04:23 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 04:23 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 04:23 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 04:23 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 04:23 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 04:23 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 04:23 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 04:23 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 04:23 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 04:23 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 04:23 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 04:23 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 04:23 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 04:23 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 04:23 10061-02-60.50 0.13 1 Diisopropyl ether ND ug/L 08/12/23 04:23 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 04:23 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 04:23 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 04:23 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 04:23 75-09-22.0 1.9 1 Methyl-tert-butyl ether ND ug/L 08/12/23 04:23 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 04:23 91-20-32.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 04:23 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 04:23 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 04:23 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 31 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:DW-2 Lab ID:92682090014 Collected:08/08/23 10:35 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 04:23 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 04:23 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 04:23 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 04:23 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 04:23 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 04:23 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 04:23 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 04:23 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 04:23 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 04:23 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 04:23 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 04:23 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 04:23 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 04:23 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 04:23 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)99 %08/12/23 04:23 17060-07-070-130 1 4-Bromofluorobenzene (S)97 %08/12/23 04:23 460-00-470-130 1 Toluene-d8 (S)96 %08/12/23 04:23 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 32 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:WS-1 Lab ID:92682090015 Collected:08/09/23 15:45 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 08/12/23 04:41 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 04:41 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 04:41 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 04:41 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 04:41 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 04:41 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 04:41 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 04:41 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 04:41 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 04:41 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 04:41 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 04:41 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 04:41 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 04:41 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 04:41 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 04:41 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 04:41 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 04:41 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 04:41 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 04:41 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 04:41 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 04:41 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 04:41 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 04:41 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 04:41 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 04:41 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 04:41 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 04:41 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 04:41 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 04:41 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 04:41 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 04:41 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 04:41 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 04:41 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 04:41 10061-02-60.50 0.13 1 Diisopropyl ether ND ug/L 08/12/23 04:41 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 04:41 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 04:41 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 04:41 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 04:41 75-09-22.0 1.9 1 Methyl-tert-butyl ether ND ug/L 08/12/23 04:41 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 04:41 91-20-32.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 04:41 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 04:41 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 04:41 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 33 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:WS-1 Lab ID:92682090015 Collected:08/09/23 15:45 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 04:41 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 04:41 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 04:41 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 04:41 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 04:41 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 04:41 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 04:41 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 04:41 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 04:41 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 04:41 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 04:41 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 04:41 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 04:41 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 04:41 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 04:41 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)101 %08/12/23 04:41 17060-07-070-130 1 4-Bromofluorobenzene (S)98 %08/12/23 04:41 460-00-470-130 1 Toluene-d8 (S)96 %08/12/23 04:41 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 34 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:WS-2 Lab ID:92682090016 Collected:08/09/23 16:05 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 08/12/23 05:00 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 05:00 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 05:00 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 05:00 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 05:00 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 05:00 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 05:00 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 05:00 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 05:00 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 05:00 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 05:00 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 05:00 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 05:00 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 05:00 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 05:00 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 05:00 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 05:00 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 05:00 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 05:00 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 05:00 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 05:00 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 05:00 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 05:00 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 05:00 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 05:00 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 05:00 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 05:00 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 05:00 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 05:00 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 05:00 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 05:00 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 05:00 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 05:00 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 05:00 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 05:00 10061-02-60.50 0.13 1 Diisopropyl ether ND ug/L 08/12/23 05:00 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 05:00 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 05:00 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 05:00 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 05:00 75-09-22.0 1.9 1 Methyl-tert-butyl ether ND ug/L 08/12/23 05:00 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 05:00 91-20-32.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 05:00 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 05:00 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 05:00 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 35 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:WS-2 Lab ID:92682090016 Collected:08/09/23 16:05 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 05:00 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 05:00 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 05:00 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 05:00 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 05:00 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 05:00 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 05:00 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 05:00 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 05:00 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 05:00 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 05:00 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 05:00 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 05:00 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 05:00 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 05:00 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)100 %08/12/23 05:00 17060-07-070-130 1 4-Bromofluorobenzene (S)98 %08/12/23 05:00 460-00-470-130 1 Toluene-d8 (S)96 %08/12/23 05:00 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 36 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:WS-3 Lab ID:92682090017 Collected:08/09/23 16:25 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 08/12/23 00:44 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 00:44 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 00:44 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 00:44 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 00:44 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 00:44 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 00:44 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 00:44 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 00:44 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 00:44 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 00:44 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 00:44 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 00:44 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 00:44 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 00:44 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 00:44 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 00:44 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 00:44 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 00:44 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 00:44 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 00:44 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 00:44 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 00:44 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 00:44 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 00:44 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 00:44 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 00:44 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 00:44 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 00:44 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 00:44 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 00:44 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 00:44 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 00:44 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 00:44 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 00:44 10061-02-60.50 0.13 1 Diisopropyl ether ND ug/L 08/12/23 00:44 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 00:44 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 00:44 87-68-32.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 00:44 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 00:44 75-09-22.0 1.9 1 Methyl-tert-butyl ether 0.63 ug/L 08/12/23 00:44 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 00:44 91-20-32.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 00:44 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 00:44 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 00:44 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 37 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:WS-3 Lab ID:92682090017 Collected:08/09/23 16:25 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 00:44 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 00:44 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 00:44 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 00:44 87-61-62.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 00:44 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 00:44 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 00:44 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 00:44 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 00:44 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 00:44 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 00:44 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 00:44 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 00:44 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 00:44 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 00:44 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)100 %08/12/23 00:44 17060-07-070-130 1 4-Bromofluorobenzene (S)97 %08/12/23 00:44 460-00-470-130 1 Toluene-d8 (S)95 %08/12/23 00:44 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 38 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:KELLER WELL Lab ID:92682090018 Collected:08/09/23 15:25 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 08/12/23 01:02 71-43-20.50 0.079 1 Bromobenzene ND ug/L 08/12/23 01:02 108-86-10.50 0.14 1 Bromochloromethane ND ug/L 08/12/23 01:02 74-97-50.50 0.094 1 Bromodichloromethane ND ug/L 08/12/23 01:02 75-27-40.50 0.17 1 Bromoform ND ug/L 08/12/23 01:02 75-25-20.50 0.20 1 Bromomethane ND ug/L 08/12/23 01:02 74-83-95.0 0.22 1 n-Butylbenzene ND ug/L 08/12/23 01:02 104-51-80.50 0.066 1 sec-Butylbenzene ND ug/L 08/12/23 01:02 135-98-80.50 0.085 1 tert-Butylbenzene ND ug/L 08/12/23 01:02 98-06-60.50 0.086 1 Carbon tetrachloride ND ug/L 08/12/23 01:02 56-23-50.50 0.17 1 Chlorobenzene ND ug/L 08/12/23 01:02 108-90-70.50 0.085 1 Chloroethane ND ug/L 08/12/23 01:02 75-00-31.0 0.17 1 Chloroform ND ug/L 08/12/23 01:02 67-66-30.50 0.069 1 Chloromethane ND ug/L 08/12/23 01:02 74-87-31.0 0.18 1 2-Chlorotoluene ND ug/L 08/12/23 01:02 95-49-80.50 0.13 1 4-Chlorotoluene ND ug/L 08/12/23 01:02 106-43-40.50 0.096 1 1,2-Dibromo-3-chloropropane ND ug/L 08/12/23 01:02 96-12-81.0 0.18 1 Dibromochloromethane ND ug/L 08/12/23 01:02 124-48-10.50 0.15 1 1,2-Dibromoethane (EDB)ND ug/L 08/12/23 01:02 106-93-40.50 0.15 1 Dibromomethane ND ug/L 08/12/23 01:02 74-95-30.50 0.19 1 1,2-Dichlorobenzene ND ug/L 08/12/23 01:02 95-50-10.50 0.094 1 1,3-Dichlorobenzene ND ug/L 08/12/23 01:02 541-73-10.50 0.098 1 1,4-Dichlorobenzene ND ug/L 08/12/23 01:02 106-46-70.50 0.090 1 Dichlorodifluoromethane ND ug/L 08/12/23 01:02 75-71-80.50 0.12 1 1,1-Dichloroethane ND ug/L 08/12/23 01:02 75-34-30.50 0.056 1 1,2-Dichloroethane ND ug/L 08/12/23 01:02 107-06-20.50 0.11 1 1,1-Dichloroethene ND ug/L 08/12/23 01:02 75-35-40.50 0.079 1 cis-1,2-Dichloroethene ND ug/L 08/12/23 01:02 156-59-20.50 0.11 1 trans-1,2-Dichloroethene ND ug/L 08/12/23 01:02 156-60-50.50 0.10 1 1,2-Dichloropropane ND ug/L 08/12/23 01:02 78-87-50.50 0.14 1 1,3-Dichloropropane ND ug/L 08/12/23 01:02 142-28-90.50 0.085 1 2,2-Dichloropropane ND ug/L 08/12/23 01:02 594-20-70.50 0.12 1 1,1-Dichloropropene ND ug/L 08/12/23 01:02 563-58-60.50 0.066 1 cis-1,3-Dichloropropene ND ug/L 08/12/23 01:02 10061-01-50.50 0.090 1 trans-1,3-Dichloropropene ND ug/L 08/12/23 01:02 10061-02-60.50 0.13 1 Diisopropyl ether ND ug/L 08/12/23 01:02 108-20-30.50 0.072 1 Ethylbenzene ND ug/L 08/12/23 01:02 100-41-40.50 0.081 1 Hexachloro-1,3-butadiene ND ug/L 08/12/23 01:02 87-68-3 M12.0 0.35 1 Isopropylbenzene (Cumene)ND ug/L 08/12/23 01:02 98-82-80.50 0.11 1 Methylene Chloride ND ug/L 08/12/23 01:02 75-09-22.0 1.9 1 Methyl-tert-butyl ether ND ug/L 08/12/23 01:02 1634-04-40.50 0.053 1 Naphthalene ND ug/L 08/12/23 01:02 91-20-3 M12.0 0.10 1 n-Propylbenzene ND ug/L 08/12/23 01:02 103-65-10.50 0.10 1 Styrene ND ug/L 08/12/23 01:02 100-42-50.50 0.14 1 1,1,1,2-Tetrachloroethane ND ug/L 08/12/23 01:02 630-20-60.50 0.091 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 39 of 57 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92682090 DOT-470 Sample:KELLER WELL Lab ID:92682090018 Collected:08/09/23 15:25 Received:08/10/23 13:15 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,1,2,2-Tetrachloroethane ND ug/L 08/12/23 01:02 79-34-50.50 0.074 1 Tetrachloroethene ND ug/L 08/12/23 01:02 127-18-40.50 0.086 1 Toluene ND ug/L 08/12/23 01:02 108-88-30.50 0.090 1 1,2,3-Trichlorobenzene ND ug/L 08/12/23 01:02 87-61-6 M12.0 0.12 1 1,2,4-Trichlorobenzene ND ug/L 08/12/23 01:02 120-82-12.0 0.16 1 1,1,1-Trichloroethane ND ug/L 08/12/23 01:02 71-55-60.50 0.11 1 1,1,2-Trichloroethane ND ug/L 08/12/23 01:02 79-00-50.50 0.096 1 Trichloroethene ND ug/L 08/12/23 01:02 79-01-60.50 0.17 1 Trichlorofluoromethane ND ug/L 08/12/23 01:02 75-69-41.0 0.14 1 1,2,3-Trichloropropane ND ug/L 08/12/23 01:02 96-18-40.50 0.17 1 1,2,4-Trimethylbenzene ND ug/L 08/12/23 01:02 95-63-60.50 0.031 1 1,3,5-Trimethylbenzene ND ug/L 08/12/23 01:02 108-67-80.50 0.071 1 Vinyl chloride ND ug/L 08/12/23 01:02 75-01-41.0 0.15 1 m&p-Xylene ND ug/L 08/12/23 01:02 179601-23-11.0 0.094 1 o-Xylene ND ug/L 08/12/23 01:02 95-47-60.50 0.14 1 Surrogates 1,2-Dichloroethane-d4 (S)99 %08/12/23 01:02 17060-07-070-130 1 4-Bromofluorobenzene (S)98 %08/12/23 01:02 460-00-470-130 1 Toluene-d8 (S)96 %08/12/23 01:02 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 40 of 57 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92682090 DOT-470 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 793018 SM 6200B SM 6200B 6200B MSV Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples:92682090001, 92682090003, 92682090004, 92682090005, 92682090006, 92682090007, 92682090008, 92682090009, 92682090010, 92682090011, 92682090012, 92682090013, 92682090014, 92682090015, 92682090016, 92682090017, 92682090018 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4109466 Associated Lab Samples:92682090001, 92682090003, 92682090004, 92682090005, 92682090006, 92682090007, 92682090008, 92682090009, 92682090010, 92682090011, 92682090012, 92682090013, 92682090014, 92682090015, 92682090016, 92682090017, 92682090018 Matrix:Water AnalyzedMDL 1,1,1,2-Tetrachloroethane ug/L ND 0.50 08/12/23 00:070.091 1,1,1-Trichloroethane ug/L ND 0.50 08/12/23 00:070.11 1,1,2,2-Tetrachloroethane ug/L ND 0.50 08/12/23 00:070.074 1,1,2-Trichloroethane ug/L ND 0.50 08/12/23 00:070.096 1,1-Dichloroethane ug/L ND 0.50 08/12/23 00:070.056 1,1-Dichloroethene ug/L ND 0.50 08/12/23 00:070.079 1,1-Dichloropropene ug/L ND 0.50 08/12/23 00:070.066 1,2,3-Trichlorobenzene ug/L ND 2.0 08/12/23 00:070.12 1,2,3-Trichloropropane ug/L ND 0.50 08/12/23 00:070.17 1,2,4-Trichlorobenzene ug/L ND 2.0 08/12/23 00:070.16 1,2,4-Trimethylbenzene ug/L ND 0.50 08/12/23 00:070.031 1,2-Dibromo-3-chloropropane ug/L ND 1.0 08/12/23 00:070.18 1,2-Dibromoethane (EDB)ug/L ND 0.50 08/12/23 00:070.15 1,2-Dichlorobenzene ug/L ND 0.50 08/12/23 00:070.094 1,2-Dichloroethane ug/L ND 0.50 08/12/23 00:070.11 1,2-Dichloropropane ug/L ND 0.50 08/12/23 00:070.14 1,3,5-Trimethylbenzene ug/L ND 0.50 08/12/23 00:070.071 1,3-Dichlorobenzene ug/L ND 0.50 08/12/23 00:070.098 1,3-Dichloropropane ug/L ND 0.50 08/12/23 00:070.085 1,4-Dichlorobenzene ug/L ND 0.50 08/12/23 00:070.090 2,2-Dichloropropane ug/L ND 0.50 08/12/23 00:070.12 2-Chlorotoluene ug/L ND 0.50 08/12/23 00:070.13 4-Chlorotoluene ug/L ND 0.50 08/12/23 00:070.096 Benzene ug/L ND 0.50 08/12/23 00:070.079 Bromobenzene ug/L ND 0.50 08/12/23 00:070.14 Bromochloromethane ug/L ND 0.50 08/12/23 00:070.094 Bromodichloromethane ug/L ND 0.50 08/12/23 00:070.17 Bromoform ug/L ND 0.50 08/12/23 00:070.20 Bromomethane ug/L ND 5.0 08/12/23 00:070.22 Carbon tetrachloride ug/L ND 0.50 08/12/23 00:070.17 Chlorobenzene ug/L ND 0.50 08/12/23 00:070.085 Chloroethane ug/L ND 1.0 08/12/23 00:070.17 Chloroform ug/L ND 0.50 08/12/23 00:070.069 Chloromethane ug/L ND 1.0 08/12/23 00:070.18 cis-1,2-Dichloroethene ug/L ND 0.50 08/12/23 00:070.11 cis-1,3-Dichloropropene ug/L ND 0.50 08/12/23 00:070.090 Dibromochloromethane ug/L ND 0.50 08/12/23 00:070.15 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 41 of 57 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92682090 DOT-470 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4109466 Associated Lab Samples:92682090001, 92682090003, 92682090004, 92682090005, 92682090006, 92682090007, 92682090008, 92682090009, 92682090010, 92682090011, 92682090012, 92682090013, 92682090014, 92682090015, 92682090016, 92682090017, 92682090018 Matrix:Water AnalyzedMDL Dibromomethane ug/L ND 0.50 08/12/23 00:070.19 Dichlorodifluoromethane ug/L ND 0.50 08/12/23 00:070.12 Diisopropyl ether ug/L ND 0.50 08/12/23 00:070.072 Ethylbenzene ug/L ND 0.50 08/12/23 00:070.081 Hexachloro-1,3-butadiene ug/L ND 2.0 08/12/23 00:070.35 Isopropylbenzene (Cumene)ug/L ND 0.50 08/12/23 00:070.11 m&p-Xylene ug/L ND 1.0 08/12/23 00:070.094 Methyl-tert-butyl ether ug/L ND 0.50 08/12/23 00:070.053 Methylene Chloride ug/L ND 2.0 08/12/23 00:071.9 n-Butylbenzene ug/L ND 0.50 08/12/23 00:070.066 n-Propylbenzene ug/L ND 0.50 08/12/23 00:070.10 Naphthalene ug/L ND 2.0 08/12/23 00:070.10 o-Xylene ug/L ND 0.50 08/12/23 00:070.14 sec-Butylbenzene ug/L ND 0.50 08/12/23 00:070.085 Styrene ug/L ND 0.50 08/12/23 00:070.14 tert-Butylbenzene ug/L ND 0.50 08/12/23 00:070.086 Tetrachloroethene ug/L ND 0.50 08/12/23 00:070.086 Toluene ug/L ND 0.50 08/12/23 00:070.090 trans-1,2-Dichloroethene ug/L ND 0.50 08/12/23 00:070.10 trans-1,3-Dichloropropene ug/L ND 0.50 08/12/23 00:070.13 Trichloroethene ug/L ND 0.50 08/12/23 00:070.17 Trichlorofluoromethane ug/L ND 1.0 08/12/23 00:070.14 Vinyl chloride ug/L ND 1.0 08/12/23 00:070.15 1,2-Dichloroethane-d4 (S)%100 70-130 08/12/23 00:07 4-Bromofluorobenzene (S)%98 70-130 08/12/23 00:07 Toluene-d8 (S)%96 70-130 08/12/23 00:07 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4109467LABORATORY CONTROL SAMPLE: LCSSpike 1,1,1,2-Tetrachloroethane ug/L 19.820 99 60-140 1,1,1-Trichloroethane ug/L 18.820 94 60-140 1,1,2,2-Tetrachloroethane ug/L 20.720 104 60-140 1,1,2-Trichloroethane ug/L 20.220 101 60-140 1,1-Dichloroethane ug/L 18.520 92 60-140 1,1-Dichloroethene ug/L 19.220 96 60-140 1,1-Dichloropropene ug/L 20.020 100 60-140 1,2,3-Trichlorobenzene ug/L 18.320 92 60-140 1,2,3-Trichloropropane ug/L 19.520 98 60-140 1,2,4-Trichlorobenzene ug/L 18.420 92 60-140 1,2,4-Trimethylbenzene ug/L 18.820 94 60-140 1,2-Dibromo-3-chloropropane ug/L 17.320 87 60-140 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 42 of 57 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92682090 DOT-470 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4109467LABORATORY CONTROL SAMPLE: LCSSpike 1,2-Dibromoethane (EDB)ug/L 20.020 100 60-140 1,2-Dichlorobenzene ug/L 19.620 98 60-140 1,2-Dichloroethane ug/L 18.920 94 60-140 1,2-Dichloropropane ug/L 19.620 98 60-140 1,3,5-Trimethylbenzene ug/L 19.120 95 60-140 1,3-Dichlorobenzene ug/L 19.120 95 60-140 1,3-Dichloropropane ug/L 19.320 97 60-140 1,4-Dichlorobenzene ug/L 19.220 96 60-140 2,2-Dichloropropane ug/L 16.520 83 60-140 2-Chlorotoluene ug/L 18.620 93 60-140 4-Chlorotoluene ug/L 18.820 94 60-140 Benzene ug/L 19.620 98 60-140 Bromobenzene ug/L 19.120 95 60-140 Bromochloromethane ug/L 19.120 96 60-140 Bromodichloromethane ug/L 18.620 93 60-140 Bromoform ug/L 18.320 91 60-140 Bromomethane ug/L 15.220 76 60-140 Carbon tetrachloride ug/L 19.420 97 60-140 Chlorobenzene ug/L 19.720 98 60-140 Chloroethane ug/L 17.920 89 60-140 Chloroform ug/L 18.320 91 60-140 Chloromethane ug/L 15.120 75 60-140 cis-1,2-Dichloroethene ug/L 18.220 91 60-140 cis-1,3-Dichloropropene ug/L 18.420 92 60-140 Dibromochloromethane ug/L 18.820 94 60-140 Dibromomethane ug/L 19.720 99 60-140 Dichlorodifluoromethane ug/L 19.020 95 60-140 Diisopropyl ether ug/L 17.820 89 60-140 Ethylbenzene ug/L 19.120 96 60-140 Hexachloro-1,3-butadiene ug/L 18.920 95 60-140 Isopropylbenzene (Cumene)ug/L 19.720 99 60-140 m&p-Xylene ug/L 38.840 97 60-140 Methyl-tert-butyl ether ug/L 17.820 89 60-140 Methylene Chloride ug/L 17.020 85 60-140 n-Butylbenzene ug/L 18.620 93 60-140 n-Propylbenzene ug/L 18.220 91 60-140 Naphthalene ug/L 19.520 97 60-140 o-Xylene ug/L 19.220 96 60-140 sec-Butylbenzene ug/L 18.420 92 60-140 Styrene ug/L 19.720 98 60-140 tert-Butylbenzene ug/L 15.520 78 60-140 Tetrachloroethene ug/L 19.020 95 60-140 Toluene ug/L 18.820 94 60-140 trans-1,2-Dichloroethene ug/L 18.720 93 60-140 trans-1,3-Dichloropropene ug/L 18.320 91 60-140 Trichloroethene ug/L 19.920 99 60-140 Trichlorofluoromethane ug/L 19.020 95 60-140 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 43 of 57 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92682090 DOT-470 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4109467LABORATORY CONTROL SAMPLE: LCSSpike Vinyl chloride ug/L 15.220 76 60-140 1,2-Dichloroethane-d4 (S)%95 70-130 4-Bromofluorobenzene (S)%101 70-130 Toluene-d8 (S)%97 70-130 Parameter Units MS Result % Rec Limits Qual% RecConc. 4109468MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92682090018 4109469 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. 1,1,1,2-Tetrachloroethane ug/L 20 117 60-140132 12 3020ND23.4 26.4 1,1,1-Trichloroethane ug/L 20 108 60-140122 12 3020ND21.7 24.4 1,1,2,2-Tetrachloroethane ug/L 20 122 60-140140 13 3020ND24.5 27.9 1,1,2-Trichloroethane ug/L 20 114 60-140130 14 3020ND22.8 26.1 1,1-Dichloroethane ug/L 20 106 60-140120 13 3020ND21.2 24.1 1,1-Dichloroethene ug/L 20 117 60-140130 11 3020ND23.3 26.0 1,1-Dichloropropene ug/L 20 117 60-140130 10 3020ND23.4 25.9 1,2,3-Trichlorobenzene ug/L M12012660-140141 12 3020ND25.1 28.3 1,2,3-Trichloropropane ug/L 20 115 60-140132 14 3020ND23.1 26.4 1,2,4-Trichlorobenzene ug/L 20 120 60-140131 9 3020ND23.9 26.1 1,2,4-Trimethylbenzene ug/L 20 120 60-140134 10 3020ND24.1 26.7 1,2-Dibromo-3- chloropropane ug/L 20 116 60-140133 14 3020ND23.1 26.7 1,2-Dibromoethane (EDB)ug/L 20 118 60-140134 12 3020ND23.6 26.7 1,2-Dichlorobenzene ug/L 20 124 60-140138 10 3020ND24.9 27.5 1,2-Dichloroethane ug/L 20 106 60-140118 11 3020ND21.2 23.7 1,2-Dichloropropane ug/L 20 111 60-140125 11 3020ND22.2 24.9 1,3,5-Trimethylbenzene ug/L 20 123 60-140137 11 3020ND24.7 27.5 1,3-Dichlorobenzene ug/L 20 122 60-140133 9 3020ND24.4 26.7 1,3-Dichloropropane ug/L 20 114 60-140127 11 3020ND22.7 25.4 1,4-Dichlorobenzene ug/L 20 122 60-140136 11 3020ND24.4 27.3 2,2-Dichloropropane ug/L 20 98 60-140109 11 3020ND19.6 21.9 2-Chlorotoluene ug/L 20 121 60-140133 9 3020ND24.3 26.6 4-Chlorotoluene ug/L 20 119 60-140132 10 3020ND23.9 26.4 Benzene ug/L 20 113 60-140125 11 3020ND22.5 25.0 Bromobenzene ug/L 20 121 60-140138 13 3020ND24.3 27.6 Bromochloromethane ug/L 20 110 60-140126 13 3020ND22.0 25.1 Bromodichloromethane ug/L 20 102 60-140117 13 3020ND20.5 23.3 Bromoform ug/L 20 106 60-140124 16 3020ND21.1 24.9 Bromomethane ug/L 20 75 60-14083 10 3020ND15.0 16.5 Carbon tetrachloride ug/L 20 112 60-140130 14 3020ND22.5 25.9 Chlorobenzene ug/L 20 118 60-140133 12 3020ND23.7 26.6 Chloroethane ug/L 20 103 60-140112 8 3020ND20.6 22.3 Chloroform ug/L 20 102 60-140120 16 3020ND20.5 24.0 Chloromethane ug/L 20 84 60-14095 12 3020ND16.8 19.0 cis-1,2-Dichloroethene ug/L 20 105 60-140116 10 3020ND20.9 23.1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 44 of 57 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92682090 DOT-470 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units MS Result % Rec Limits Qual% RecConc. 4109468MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92682090018 4109469 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. cis-1,3-Dichloropropene ug/L 20 100 60-140115 13 3020ND20.0 22.9 Dibromochloromethane ug/L 20 109 60-140124 13 3020ND21.7 24.7 Dibromomethane ug/L 20 110 60-140125 13 3020ND22.0 25.1 Dichlorodifluoromethane ug/L 20 117 60-140130 10 3020ND23.4 26.0 Diisopropyl ether ug/L 20 102 60-140116 13 3020ND20.4 23.2 Ethylbenzene ug/L 20 117 60-140130 10 3020ND23.4 26.0 Hexachloro-1,3-butadiene ug/L M12012760-140141 11 3020ND25.3 28.2 Isopropylbenzene (Cumene)ug/L 20 121 60-140136 11 3020ND24.2 27.1 m&p-Xylene ug/L 40 118 60-140132 11 3040ND47.2 52.9 Methyl-tert-butyl ether ug/L 20 99 60-140113 13 3020ND19.8 22.6 Methylene Chloride ug/L 20 96 60-140110 14 3020ND19.1 22.0 n-Butylbenzene ug/L 20 123 60-140135 9 3020ND24.6 27.0 n-Propylbenzene ug/L 20 119 60-140131 10 3020ND23.8 26.3 Naphthalene ug/L M12013060-140143 10 3020ND25.9 28.6 o-Xylene ug/L 20 117 60-140131 11 3020ND23.4 26.2 sec-Butylbenzene ug/L 20 120 60-140132 10 3020ND23.9 26.3 Styrene ug/L 20 118 60-140133 12 3020ND23.7 26.6 tert-Butylbenzene ug/L 20 99 60-140111 11 3020ND19.8 22.2 Tetrachloroethene ug/L 20 120 60-140132 10 3020ND24.0 26.5 Toluene ug/L 20 110 60-140123 12 3020ND21.9 24.7 trans-1,2-Dichloroethene ug/L 20 107 60-140119 10 3020ND21.4 23.8 trans-1,3-Dichloropropene ug/L 20 102 60-140116 14 3020ND20.3 23.3 Trichloroethene ug/L 20 116 60-140129 11 3020ND23.1 25.9 Trichlorofluoromethane ug/L 20 115 60-140127 10 3020ND23.0 25.5 Vinyl chloride ug/L 20 91 60-140103 12 3020ND18.2 20.6 1,2-Dichloroethane-d4 (S)%96 70-13098 4-Bromofluorobenzene (S)%101 70-130101 Toluene-d8 (S)%97 70-13098 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 45 of 57 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92682090 DOT-470 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 793479 SM 6200B SM 6200B 6200B MSV Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples:92682090002 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4111809 Associated Lab Samples:92682090002 Matrix:Water AnalyzedMDL 1,1,1,2-Tetrachloroethane ug/L ND 0.50 08/15/23 13:410.091 1,1,1-Trichloroethane ug/L ND 0.50 08/15/23 13:410.11 1,1,2,2-Tetrachloroethane ug/L ND 0.50 08/15/23 13:410.074 1,1,2-Trichloroethane ug/L ND 0.50 08/15/23 13:410.096 1,1-Dichloroethane ug/L ND 0.50 08/15/23 13:410.056 1,1-Dichloroethene ug/L ND 0.50 08/15/23 13:410.079 1,1-Dichloropropene ug/L ND 0.50 08/15/23 13:410.066 1,2,3-Trichlorobenzene ug/L ND 2.0 08/15/23 13:410.12 1,2,3-Trichloropropane ug/L ND 0.50 08/15/23 13:410.17 1,2,4-Trichlorobenzene ug/L ND 2.0 08/15/23 13:410.16 1,2,4-Trimethylbenzene ug/L ND 0.50 08/15/23 13:410.031 1,2-Dibromo-3-chloropropane ug/L ND 1.0 08/15/23 13:410.18 1,2-Dibromoethane (EDB)ug/L ND 0.50 08/15/23 13:410.15 1,2-Dichlorobenzene ug/L ND 0.50 08/15/23 13:410.094 1,2-Dichloroethane ug/L ND 0.50 08/15/23 13:410.11 1,2-Dichloropropane ug/L ND 0.50 08/15/23 13:410.14 1,3,5-Trimethylbenzene ug/L ND 0.50 08/15/23 13:410.071 1,3-Dichlorobenzene ug/L ND 0.50 08/15/23 13:410.098 1,3-Dichloropropane ug/L ND 0.50 08/15/23 13:410.085 1,4-Dichlorobenzene ug/L ND 0.50 08/15/23 13:410.090 2,2-Dichloropropane ug/L ND 0.50 08/15/23 13:410.12 2-Chlorotoluene ug/L ND 0.50 08/15/23 13:410.13 4-Chlorotoluene ug/L ND 0.50 08/15/23 13:410.096 Benzene ug/L ND 0.50 08/15/23 13:410.079 Bromobenzene ug/L ND 0.50 08/15/23 13:410.14 Bromochloromethane ug/L ND 0.50 08/15/23 13:410.094 Bromodichloromethane ug/L ND 0.50 08/15/23 13:410.17 Bromoform ug/L ND 0.50 08/15/23 13:410.20 Bromomethane ug/L ND 5.0 08/15/23 13:410.22 Carbon tetrachloride ug/L ND 0.50 08/15/23 13:410.17 Chlorobenzene ug/L ND 0.50 08/15/23 13:410.085 Chloroethane ug/L ND 1.0 08/15/23 13:410.17 Chloroform ug/L ND 0.50 08/15/23 13:410.069 Chloromethane ug/L ND 1.0 08/15/23 13:410.18 cis-1,2-Dichloroethene ug/L ND 0.50 08/15/23 13:410.11 cis-1,3-Dichloropropene ug/L ND 0.50 08/15/23 13:410.090 Dibromochloromethane ug/L ND 0.50 08/15/23 13:410.15 Dibromomethane ug/L ND 0.50 08/15/23 13:410.19 Dichlorodifluoromethane ug/L ND 0.50 08/15/23 13:410.12 Diisopropyl ether ug/L ND 0.50 08/15/23 13:410.072 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 46 of 57 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92682090 DOT-470 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4111809 Associated Lab Samples:92682090002 Matrix:Water AnalyzedMDL Ethylbenzene ug/L ND 0.50 08/15/23 13:410.081 Hexachloro-1,3-butadiene ug/L 1.2J 2.0 08/15/23 13:410.35 Isopropylbenzene (Cumene)ug/L ND 0.50 08/15/23 13:410.11 m&p-Xylene ug/L ND 1.0 08/15/23 13:410.094 Methyl-tert-butyl ether ug/L ND 0.50 08/15/23 13:410.053 Methylene Chloride ug/L ND 2.0 08/15/23 13:411.9 n-Butylbenzene ug/L ND 0.50 08/15/23 13:410.066 n-Propylbenzene ug/L ND 0.50 08/15/23 13:410.10 Naphthalene ug/L ND 2.0 08/15/23 13:410.10 o-Xylene ug/L ND 0.50 08/15/23 13:410.14 sec-Butylbenzene ug/L ND 0.50 08/15/23 13:410.085 Styrene ug/L ND 0.50 08/15/23 13:410.14 tert-Butylbenzene ug/L ND 0.50 08/15/23 13:410.086 Tetrachloroethene ug/L ND 0.50 08/15/23 13:410.086 Toluene ug/L ND 0.50 08/15/23 13:410.090 trans-1,2-Dichloroethene ug/L ND 0.50 08/15/23 13:410.10 trans-1,3-Dichloropropene ug/L ND 0.50 08/15/23 13:410.13 Trichloroethene ug/L ND 0.50 08/15/23 13:410.17 Trichlorofluoromethane ug/L ND 1.0 08/15/23 13:410.14 Vinyl chloride ug/L ND 1.0 08/15/23 13:410.15 1,2-Dichloroethane-d4 (S)%100 70-130 08/15/23 13:41 4-Bromofluorobenzene (S)%100 70-130 08/15/23 13:41 Toluene-d8 (S)%100 70-130 08/15/23 13:41 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4111810LABORATORY CONTROL SAMPLE: LCSSpike 1,1,1,2-Tetrachloroethane ug/L 19.820 99 60-140 1,1,1-Trichloroethane ug/L 19.520 98 60-140 1,1,2,2-Tetrachloroethane ug/L 18.320 92 60-140 1,1,2-Trichloroethane ug/L 20.320 102 60-140 1,1-Dichloroethane ug/L 20.020 100 60-140 1,1-Dichloroethene ug/L 20.020 100 60-140 1,1-Dichloropropene ug/L 21.120 105 60-140 1,2,3-Trichlorobenzene ug/L 21.520 108 60-140 1,2,3-Trichloropropane ug/L 18.820 94 60-140 1,2,4-Trichlorobenzene ug/L 20.920 104 60-140 1,2,4-Trimethylbenzene ug/L 20.320 101 60-140 1,2-Dibromo-3-chloropropane ug/L 19.320 96 60-140 1,2-Dibromoethane (EDB)ug/L 19.220 96 60-140 1,2-Dichlorobenzene ug/L 20.420 102 60-140 1,2-Dichloroethane ug/L 19.820 99 60-140 1,2-Dichloropropane ug/L 19.820 99 60-140 1,3,5-Trimethylbenzene ug/L 20.420 102 60-140 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 47 of 57 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92682090 DOT-470 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4111810LABORATORY CONTROL SAMPLE: LCSSpike 1,3-Dichlorobenzene ug/L 20.420 102 60-140 1,3-Dichloropropane ug/L 20.020 100 60-140 1,4-Dichlorobenzene ug/L 20.020 100 60-140 2,2-Dichloropropane ug/L 19.120 95 60-140 2-Chlorotoluene ug/L 20.420 102 60-140 4-Chlorotoluene ug/L 20.220 101 60-140 Benzene ug/L 19.920 100 60-140 Bromobenzene ug/L 20.220 101 60-140 Bromochloromethane ug/L 20.220 101 60-140 Bromodichloromethane ug/L 20.020 100 60-140 Bromoform ug/L 19.520 98 60-140 Bromomethane ug/L 19.020 95 60-140 Carbon tetrachloride ug/L 19.220 96 60-140 Chlorobenzene ug/L 19.820 99 60-140 Chloroethane ug/L 18.220 91 60-140 Chloroform ug/L 19.620 98 60-140 Chloromethane ug/L 16.520 82 60-140 cis-1,2-Dichloroethene ug/L 20.220 101 60-140 cis-1,3-Dichloropropene ug/L 20.120 101 60-140 Dibromochloromethane ug/L 19.620 98 60-140 Dibromomethane ug/L 19.420 97 60-140 Dichlorodifluoromethane ug/L 17.420 87 60-140 Diisopropyl ether ug/L 19.120 96 60-140 Ethylbenzene ug/L 19.020 95 60-140 Hexachloro-1,3-butadiene ug/L 24.120 121 60-140 Isopropylbenzene (Cumene)ug/L 20.120 100 60-140 m&p-Xylene ug/L 38.640 96 60-140 Methyl-tert-butyl ether ug/L 18.620 93 60-140 Methylene Chloride ug/L 18.720 93 60-140 n-Butylbenzene ug/L 21.020 105 60-140 n-Propylbenzene ug/L 19.720 98 60-140 Naphthalene ug/L 21.920 110 60-140 o-Xylene ug/L 19.720 98 60-140 sec-Butylbenzene ug/L 20.120 100 60-140 Styrene ug/L 19.520 97 60-140 tert-Butylbenzene ug/L 16.620 83 60-140 Tetrachloroethene ug/L 18.920 94 60-140 Toluene ug/L 19.620 98 60-140 trans-1,2-Dichloroethene ug/L 20.320 102 60-140 trans-1,3-Dichloropropene ug/L 19.920 99 60-140 Trichloroethene ug/L 19.820 99 60-140 Trichlorofluoromethane ug/L 17.420 87 60-140 Vinyl chloride ug/L 15.520 78 60-140 1,2-Dichloroethane-d4 (S)%103 70-130 4-Bromofluorobenzene (S)%99 70-130 Toluene-d8 (S)%100 70-130 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 48 of 57 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92682090 DOT-470 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units MS Result % Rec Limits Qual% RecConc. 4111811MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92682423006 4111812 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. 1,1,1,2-Tetrachloroethane ug/L 20 101 60-140110 9 3020ND20.2 22.1 1,1,1-Trichloroethane ug/L 20 107 60-140114 6 3020ND21.4 22.7 1,1,2,2-Tetrachloroethane ug/L 20 92 60-140103 12 3020ND18.3 20.7 1,1,2-Trichloroethane ug/L 20 101 60-140112 11 3020ND20.2 22.5 1,1-Dichloroethane ug/L 20 103 60-140110 7 3020ND20.6 22.0 1,1-Dichloroethene ug/L 20 111 60-140116 5 3020ND22.1 23.3 1,1-Dichloropropene ug/L 20 115 60-140124 7 3020ND23.0 24.8 1,2,3-Trichlorobenzene ug/L 20 104 60-140118 12 3020ND20.9 23.5 1,2,3-Trichloropropane ug/L 20 98 60-140105 7 3020ND19.6 20.9 1,2,4-Trichlorobenzene ug/L 20 104 60-140111 7 3020ND20.8 22.3 1,2,4-Trimethylbenzene ug/L 20 104 60-140113 9 3020ND20.8 22.6 1,2-Dibromo-3- chloropropane ug/L 20 96 60-140109 13 3020ND19.1 21.8 1,2-Dibromoethane (EDB)ug/L 20 98 60-140109 11 3020ND19.6 21.8 1,2-Dichlorobenzene ug/L 20 101 60-140112 10 3020ND20.2 22.3 1,2-Dichloroethane ug/L 20 102 60-140108 5 3020ND20.5 21.5 1,2-Dichloropropane ug/L 20 102 60-140110 7 3020ND20.8 22.2 1,3,5-Trimethylbenzene ug/L 20 105 60-140114 9 3020ND20.9 22.9 1,3-Dichlorobenzene ug/L 20 101 60-140110 9 3020ND20.2 22.1 1,3-Dichloropropane ug/L 20 102 60-140112 9 3020ND20.3 22.3 1,4-Dichlorobenzene ug/L 20 100 60-140109 9 3020ND19.9 21.8 2,2-Dichloropropane ug/L 20 105 60-140111 5 3020ND20.9 22.1 2-Chlorotoluene ug/L 20 101 60-140112 10 3020ND20.2 22.3 4-Chlorotoluene ug/L 20 99 60-140112 12 3020ND19.8 22.4 Benzene ug/L 20 101 60-140109 8 3020ND20.2 21.9 Bromobenzene ug/L 20 99 60-140111 11 3020ND19.8 22.2 Bromochloromethane ug/L 20 101 60-140105 4 3020ND20.2 21.1 Bromodichloromethane ug/L 20 98 60-140108 9 3020ND19.7 21.6 Bromoform ug/L 20 96 60-140106 10 3020ND19.3 21.2 Bromomethane ug/L 20 77 60-14095 21 3020ND15.4 19.0 Carbon tetrachloride ug/L 20 105 60-140114 8 3020ND21.1 22.7 Chlorobenzene ug/L 20 101 60-140110 8 3020ND20.3 22.0 Chloroethane ug/L 20 94 60-14098 4 3020ND18.8 19.5 Chloroform ug/L 20 105 60-140110 5 3020ND21.0 21.9 Chloromethane ug/L 20 82 60-14085 4 3020ND16.6 17.2 cis-1,2-Dichloroethene ug/L 20 106 60-140109 3 3020ND21.2 21.8 cis-1,3-Dichloropropene ug/L 20 99 60-140107 8 3020ND19.8 21.5 Dibromochloromethane ug/L 20 100 60-140106 6 3020ND19.9 21.2 Dibromomethane ug/L 20 95 60-140107 12 3020ND19.0 21.4 Dichlorodifluoromethane ug/L 20 111 60-140115 3 3020ND22.2 23.0 Diisopropyl ether ug/L 20 99 60-140103 4 3020ND19.8 20.7 Ethylbenzene ug/L 20 100 60-140108 7 3020ND20.0 21.5 Hexachloro-1,3-butadiene ug/L 20 112 60-140119 6 3020ND22.4 23.7 Isopropylbenzene (Cumene) ug/L 20 104 60-140113 8 3020ND20.8 22.6 m&p-Xylene ug/L 40 100 60-140109 9 3040ND40.0 43.8 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 49 of 57 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92682090 DOT-470 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units MS Result % Rec Limits Qual% RecConc. 4111811MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92682423006 4111812 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Methyl-tert-butyl ether ug/L 20 96 60-140104 8 3020ND19.2 20.8 Methylene Chloride ug/L 20 94 60-14099 5 3020ND18.8 19.8 n-Butylbenzene ug/L 20 107 60-140119 11 3020ND21.3 23.8 n-Propylbenzene ug/L 20 102 60-140114 11 3020ND20.3 22.8 Naphthalene ug/L 20 113 60-140119 5 3020ND22.6 23.8 o-Xylene ug/L 20 98 60-140109 11 3020ND19.6 21.9 sec-Butylbenzene ug/L 20 101 60-140111 10 3020ND20.6 22.7 Styrene ug/L 20 99 60-140107 8 3020ND19.8 21.4 tert-Butylbenzene ug/L 20 84 60-14094 11 3020ND16.8 18.8 Tetrachloroethene ug/L 20 101 60-140111 10 3020ND20.2 22.3 Toluene ug/L 20 98 60-140107 8 3020ND19.7 21.4 trans-1,2-Dichloroethene ug/L 20 107 60-140113 5 3020ND21.4 22.6 trans-1,3-Dichloropropene ug/L 20 97 60-140108 10 3020ND19.5 21.6 Trichloroethene ug/L 20 101 60-140110 8 3020ND20.3 22.0 Trichlorofluoromethane ug/L 20 103 60-140108 5 3020ND20.6 21.6 Vinyl chloride ug/L 20 87 60-14091 5 3020ND17.4 18.2 1,2-Dichloroethane-d4 (S)%99 70-13098 4-Bromofluorobenzene (S)%98 70-13099 Toluene-d8 (S)%99 70-13099 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 50 of 57 #=QL# QUALIFIERS Pace Project No.: Project: 92682090 DOT-470 DEFINITIONS DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot. ND - Not Detected at or above adjusted reporting limit. TNTC - Too Numerous To Count J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. MDL - Adjusted Method Detection Limit. PQL - Practical Quantitation Limit. RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and bias for a specific analyte in a specific matrix. S - Surrogate 1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is a combined concentration. Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values. LCS(D) - Laboratory Control Sample (Duplicate) MS(D) - Matrix Spike (Duplicate) DUP - Sample Duplicate RPD - Relative Percent Difference NC - Not Calculable. SG - Silica Gel - Clean-Up U - Indicates the compound was analyzed for, but not detected. Acid preservation may not be appropriate for 2 Chloroethylvinyl ether. A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA Method 8260. N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for each analyte is a combined concentration. Reported results are not rounded until the final step prior to reporting. Therefore, calculated parameters that are typically reported as "Total" may vary slightly from the sum of the reported component parameters. Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes. TNI - The NELAC Institute. ANALYTE QUALIFIERS Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 51 of 57 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 92682090 DOT-470 Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 92682090001 793018MW-1 SM 6200B 92682090002 793479MW-2 SM 6200B 92682090003 793018MW-4 SM 6200B 92682090004 793018MW-5 SM 6200B 92682090005 793018MW-6 SM 6200B 92682090006 793018MW-7 SM 6200B 92682090007 793018MW-8 SM 6200B 92682090008 793018MW-9 SM 6200B 92682090009 793018MW-10 SM 6200B 92682090010 793018MW-11 SM 6200B 92682090011 793018MW-12 SM 6200B 92682090012 793018MW-13 SM 6200B 92682090013 793018DW-1 SM 6200B 92682090014 793018DW-2 SM 6200B 92682090015 793018WS-1 SM 6200B 92682090016 793018WS-2 SM 6200B 92682090017 793018WS-3 SM 6200B 92682090018 793018KELLER WELL SM 6200B REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 08/17/2023 09:23 AM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 52 of 57 Page 53 of 57 Page 54 of 57 Page 55 of 57 Page 56 of 57 Page 57 of 57 Appendix D Groundwater Sampling Forms 6?%%%0DVWHU7HPSODWHV?)RUPV)RUPV?/RZ)ORZ*URXQGZDWHU6DPSOLQJ)RUPSGI /DVW8SGDWHG Job No: Well ID: Volume PXUJing DOTemp. S. Cond. pH ORP Turbidity Time PuUJHG Rate (mg//)(oC)(PS/cm)(SU)(mV)(NTU) Other )LHOG Parameters:B__________________________________________________________________________________________________B Parameters taken with: Field Filtration: Yes No 92/80(75,& GROUNDWATER SAMPLING RECORD'DWH: *5281':$7(R ),(/'PARAMETERS 6WDELOL]DWLRQFULWHULDJXLGHOLQHVIURPWKH(3$5HJLRQ/6$6'2SHUDWLQJ3URFHGXUHIRU*URXQGZDWHU6DPSOLQJ $SULO,IILHOGSDUDPHWHUVKDYHQRWVWDELOL]HGDIWHUWKUHHYROXPHVSXUJHDGGLWLRQDOZHOOYROXPHVDQGFRQWDFW3URMHFW0DQDJHU,IDZHOOLVSXUJHGGU\DVDPSOHPD\EHFROOHFWHGIROORZLQJVXIILFLHQWUHFKDUJHDQGZLWKLQKRXUV1RWLI\3URMHFW0DQDJHUDQGFROOHFWILHOGSDUDPHWHUVDWWLPHRIVDPSOHFROOHFWLRQ *HQHUDOL]HGStabilization Criteria 3XUJHDPLQLPXPRIWKUHHZHOOYROXPHV S+68 6SHFLILF&RQGXFWLYLW\ 7XUELGLW\&KHFNZLWK3URMHFW0DQDJHU 6LWH1DPH: 6LWH/RFDWLRQ: :6DPSOLQJ3HUVRQQHO___________________BBBBBBBBBBBBBBBBBBBBB:HDWKHU: ____________ 6FUHHQ,QWHUYDOIW 'HSWKWR:DWHUIW (TXLSPHQW0DWHULDO Well Diameter: 7RWDO:HOO'HSWKIW 6DPSOLQJ(TXLSPHQW &DVLQJ0DWHULDO 7RSRI&DVLQJ(OHYDWLRQIWPVO *DOORQVSHU:HOO9ROXPH 127(6 6DPSOHGDW 6DPSOH&RQGLWLRQ&OHDU&ORXG\2WKHU If \HV, which sample parameters were field filtered: 6DPSOH'HOLYHUHGWR $QDO\WLFDO3DUDPHWHUVDQG&RQWDLQHUV7\SHV1XPEHURI&RQWDLQHUV3UHVHUYDWLYHV DOT-470 NC DOT Marble Maintenance Yard 8/9/23 Marble NC DJH 45.15100.00 2.65 Be in bailin 0913 09:21 09:30 09:41 09:50 2.65 gal 5.30 gal 7.95 gal 10.60 gal 19.7 19.4 19.5 19.5 1,408.0 1,586.0 1,538.0 1,567.0 5.65 5.30 5.31 5.29 76.7 125.6 120.3 115.8 28.3 25.5 21.0 25.2 2.20 1.95 1.94 2.04 N/A YSI-001, HACH-005 x4 40 mL VOAs w/ HCl for VOCs b 6200B Bailer PVC 09:50 Pace Anal tical MW-1 34.8 44.8 Pol eth lene bgs 28.23 80s Cloud bgs JLH 2-inch TOC Clear 6?%%%0DVWHU7HPSODWHV?)RUPV)RUPV?/RZ)ORZ*URXQGZDWHU6DPSOLQJ)RUPSGI /DVW8SGDWHG Job No: Well ID: Volume PXUJing DOTemp. 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Cond. pH ORP Turbidity Time PuUJHG Rate (mg//)(oC)(PS/cm)(SU)(mV)(NTU) Other )LHOG Parameters:B__________________________________________________________________________________________________B Parameters taken with: Field Filtration: Yes No 92/80(75,& GROUNDWATER SAMPLING RECORD'DWH: *5281':$7(R ),(/'PARAMETERS 6WDELOL]DWLRQFULWHULDJXLGHOLQHVIURPWKH(3$5HJLRQ/6$6'2SHUDWLQJ3URFHGXUHIRU*URXQGZDWHU6DPSOLQJ $SULO,IILHOGSDUDPHWHUVKDYHQRWVWDELOL]HGDIWHUWKUHHYROXPHVSXUJHDGGLWLRQDOZHOOYROXPHVDQGFRQWDFW3URMHFW0DQDJHU,IDZHOOLVSXUJHGGU\DVDPSOHPD\EHFROOHFWHGIROORZLQJVXIILFLHQWUHFKDUJHDQGZLWKLQKRXUV1RWLI\3URMHFW0DQDJHUDQGFROOHFWILHOGSDUDPHWHUVDWWLPHRIVDPSOHFROOHFWLRQ *HQHUDOL]HGStabilization Criteria 3XUJHDPLQLPXPRIWKUHHZHOOYROXPHV S+68 6SHFLILF&RQGXFWLYLW\ 7XUELGLW\&KHFNZLWK3URMHFW0DQDJHU 6LWH1DPH: 6LWH/RFDWLRQ: :6DPSOLQJ3HUVRQQHO___________________BBBBBBBBBBBBBBBBBBBBB:HDWKHU: ____________ 6FUHHQ,QWHUYDOIW 'HSWKWR:DWHUIW (TXLSPHQW0DWHULDO Well Diameter: 7RWDO:HOO'HSWKIW 6DPSOLQJ(TXLSPHQW &DVLQJ0DWHULDO 7RSRI&DVLQJ(OHYDWLRQIWPVO *DOORQVSHU:HOO9ROXPH 127(6 6DPSOHGDW 6DPSOH&RQGLWLRQ&OHDU&ORXG\2WKHU If \HV, which sample parameters were field filtered: 6DPSOH'HOLYHUHGWR $QDO\WLFDO3DUDPHWHUVDQG&RQWDLQHUV7\SHV1XPEHURI&RQWDLQHUV3UHVHUYDWLYHV DOT-470 NC DOT Marble Maintenance Yard 8/8/23 Marble NC DJH 6597.18 2.93 Be in bailin 0855; well oes dr consistentl , will ur e 3 volumes then sam le; well has ood rechar e 09:25 10:00 10:20 3 gal 6 gal 9 gal 20.6 22.1 21.0 580.0 536.0 534.3 5.93 6.03 6.07 -87.7 -88.8 -74.1 578 543 432 0.50 0.35 0.77 N/A YSIPP Eastern , HACH-003 x4 40 mL VOAs w/ HCl for VOCs b 6200B Bailer PVC 10:20 Pace Anal tical MW-10 35 65 Pol eth lene bgs 47.07 70s Cloud bgs JLH 2-inch TOC Cloud 6?%%%0DVWHU7HPSODWHV?)RUPV)RUPV?/RZ)ORZ*URXQGZDWHU6DPSOLQJ)RUPSGI /DVW8SGDWHG Job No: Well ID: Volume PXUJing DOTemp. 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Cond. pH ORP Turbidity Time PuUJHG Rate (mg//)(oC)(PS/cm)(SU)(mV)(NTU) Other )LHOG Parameters:B__________________________________________________________________________________________________B Parameters taken with: Field Filtration: Yes No 92/80(75,& GROUNDWATER SAMPLING RECORD'DWH: *5281':$7(R ),(/'PARAMETERS 6WDELOL]DWLRQFULWHULDJXLGHOLQHVIURPWKH(3$5HJLRQ/6$6'2SHUDWLQJ3URFHGXUHIRU*URXQGZDWHU6DPSOLQJ $SULO,IILHOGSDUDPHWHUVKDYHQRWVWDELOL]HGDIWHUWKUHHYROXPHVSXUJHDGGLWLRQDOZHOOYROXPHVDQGFRQWDFW3URMHFW0DQDJHU,IDZHOOLVSXUJHGGU\DVDPSOHPD\EHFROOHFWHGIROORZLQJVXIILFLHQWUHFKDUJHDQGZLWKLQKRXUV1RWLI\3URMHFW0DQDJHUDQGFROOHFWILHOGSDUDPHWHUVDWWLPHRIVDPSOHFROOHFWLRQ *HQHUDOL]HGStabilization Criteria 3XUJHDPLQLPXPRIWKUHHZHOOYROXPHV S+68 6SHFLILF&RQGXFWLYLW\ 7XUELGLW\&KHFNZLWK3URMHFW0DQDJHU 6LWH1DPH: 6LWH/RFDWLRQ: :6DPSOLQJ3HUVRQQHO___________________BBBBBBBBBBBBBBBBBBBBB:HDWKHU: ____________ 6FUHHQ,QWHUYDOIW 'HSWKWR:DWHUIW (TXLSPHQW0DWHULDO Well Diameter: 7RWDO:HOO'HSWKIW 6DPSOLQJ(TXLSPHQW &DVLQJ0DWHULDO 7RSRI&DVLQJ(OHYDWLRQIWPVO *DOORQVSHU:HOO9ROXPH 127(6 6DPSOHGDW 6DPSOH&RQGLWLRQ&OHDU&ORXG\2WKHU If \HV, which sample parameters were field filtered: 6DPSOH'HOLYHUHGWR $QDO\WLFDO3DUDPHWHUVDQG&RQWDLQHUV7\SHV1XPEHURI&RQWDLQHUV3UHVHUYDWLYHV DOT-470 NC DOT Marble Maintenance Yard 8/9/23 Marble NC DJH 6985.93 5.5 Be in bailin 1031 10:43 10:58 11:10 11:22 11:35 5.5 gal 11 gal 16.5 gal 22 gal 27.5 gal 18.4 17.7 17.5 17.8 17.6 343.4 332.9 302.0 299.6 313.7 5.78 5.80 5.72 5.70 5.70 51.1 60.1 58.5 62.6 62.9 70.4 >1000 475 265 223 2.08 2.13 2.28 2.23 2.34 N/A YSI-001, HACH-005 x4 40 mL VOAs w/ HCl for VOCs b 6200B Bailer PVC 11:35 Pace Anal tical MW-11 54 69 Pol eth lene bgs 34.46 80s Cloud bgs JLH 2-inch TOC Cloud 6?%%%0DVWHU7HPSODWHV?)RUPV)RUPV?/RZ)ORZ*URXQGZDWHU6DPSOLQJ)RUPSGI /DVW8SGDWHG Job No: Well ID: Volume PXUJing DOTemp. S. Cond. pH ORP Turbidity Time PuUJHG Rate (mg//)(oC)(PS/cm)(SU)(mV)(NTU) Other )LHOG Parameters:B__________________________________________________________________________________________________B Parameters taken with: Field Filtration: Yes No 92/80(75,& GROUNDWATER SAMPLING RECORD'DWH: *5281':$7(R ),(/'PARAMETERS 6WDELOL]DWLRQFULWHULDJXLGHOLQHVIURPWKH(3$5HJLRQ/6$6'2SHUDWLQJ3URFHGXUHIRU*URXQGZDWHU6DPSOLQJ $SULO,IILHOGSDUDPHWHUVKDYHQRWVWDELOL]HGDIWHUWKUHHYROXPHVSXUJHDGGLWLRQDOZHOOYROXPHVDQGFRQWDFW3URMHFW0DQDJHU,IDZHOOLVSXUJHGGU\DVDPSOHPD\EHFROOHFWHGIROORZLQJVXIILFLHQWUHFKDUJHDQGZLWKLQKRXUV1RWLI\3URMHFW0DQDJHUDQGFROOHFWILHOGSDUDPHWHUVDWWLPHRIVDPSOHFROOHFWLRQ *HQHUDOL]HGStabilization Criteria 3XUJHDPLQLPXPRIWKUHHZHOOYROXPHV S+68 6SHFLILF&RQGXFWLYLW\ 7XUELGLW\&KHFNZLWK3URMHFW0DQDJHU 6LWH1DPH: 6LWH/RFDWLRQ: :6DPSOLQJ3HUVRQQHO___________________BBBBBBBBBBBBBBBBBBBBB:HDWKHU: ____________ 6FUHHQ,QWHUYDOIW 'HSWKWR:DWHUIW (TXLSPHQW0DWHULDO Well Diameter: 7RWDO:HOO'HSWKIW 6DPSOLQJ(TXLSPHQW &DVLQJ0DWHULDO 7RSRI&DVLQJ(OHYDWLRQIWPVO *DOORQVSHU:HOO9ROXPH 127(6 6DPSOHGDW 6DPSOH&RQGLWLRQ&OHDU&ORXG\2WKHU If \HV, which sample parameters were field filtered: 6DPSOH'HOLYHUHGWR $QDO\WLFDO3DUDPHWHUVDQG&RQWDLQHUV7\SHV1XPEHURI&RQWDLQHUV3UHVHUYDWLYHV DOT-470 NC DOT Marble Maintenance Yard 8/9/23 Marble NC DJH 4278.23 3.12 Be in bailin 1338 13:44 13:53 14:01 14:08 14:15 14:21 14:30 3.1 gal 6.2 gal 9.3 gal 12.4 gal 15.5 gal 18.6 gal 21.7 gal 17.9 17.2 17.1 17.6 17.5 17.1 16.7 3,408.0 3,978.0 4,578.0 4,571.0 4,572.0 4,619.0 4,664.0 5.81 5.96 6.08 6.33 6.68 6.75 6.70 71.0 49.7 40.8 42.8 38.6 34.9 34.1 379 >1000 300 735 740 716 829 3.90 2.61 2.74 2.50 2.79 2.78 2.59 N/A YSI-001, HACH-005 x4 40 mL VOAs w/ HCl for VOCs b 6200B Bailer PVC 14:30 Pace Anal tical MW-12 12 42 Pol eth lene bgs 22.44 80s Sunn bgs JLH 2-inch TOC Cloud 6?%%%0DVWHU7HPSODWHV?)RUPV)RUPV?/RZ)ORZ*URXQGZDWHU6DPSOLQJ)RUPSGI /DVW8SGDWHG Job No: Well ID: Volume PXUJing DOTemp. S. Cond. pH ORP Turbidity Time PuUJHG Rate (mg//)(oC)(PS/cm)(SU)(mV)(NTU) Other )LHOG Parameters:B__________________________________________________________________________________________________B Parameters taken with: Field Filtration: Yes No 92/80(75,& GROUNDWATER SAMPLING RECORD'DWH: *5281':$7(R ),(/'PARAMETERS 6WDELOL]DWLRQFULWHULDJXLGHOLQHVIURPWKH(3$5HJLRQ/6$6'2SHUDWLQJ3URFHGXUHIRU*URXQGZDWHU6DPSOLQJ $SULO,IILHOGSDUDPHWHUVKDYHQRWVWDELOL]HGDIWHUWKUHHYROXPHVSXUJHDGGLWLRQDOZHOOYROXPHVDQGFRQWDFW3URMHFW0DQDJHU,IDZHOOLVSXUJHGGU\DVDPSOHPD\EHFROOHFWHGIROORZLQJVXIILFLHQWUHFKDUJHDQGZLWKLQKRXUV1RWLI\3URMHFW0DQDJHUDQGFROOHFWILHOGSDUDPHWHUVDWWLPHRIVDPSOHFROOHFWLRQ *HQHUDOL]HGStabilization Criteria 3XUJHDPLQLPXPRIWKUHHZHOOYROXPHV S+68 6SHFLILF&RQGXFWLYLW\ 7XUELGLW\&KHFNZLWK3URMHFW0DQDJHU 6LWH1DPH: 6LWH/RFDWLRQ: :6DPSOLQJ3HUVRQQHO___________________BBBBBBBBBBBBBBBBBBBBB:HDWKHU: ____________ 6FUHHQ,QWHUYDOIW 'HSWKWR:DWHUIW (TXLSPHQW0DWHULDO Well Diameter: 7RWDO:HOO'HSWKIW 6DPSOLQJ(TXLSPHQW &DVLQJ0DWHULDO 7RSRI&DVLQJ(OHYDWLRQIWPVO *DOORQVSHU:HOO9ROXPH 127(6 6DPSOHGDW 6DPSOH&RQGLWLRQ&OHDU&ORXG\2WKHU If \HV, which sample parameters were field filtered: 6DPSOH'HOLYHUHGWR $QDO\WLFDO3DUDPHWHUVDQG&RQWDLQHUV7\SHV1XPEHURI&RQWDLQHUV3UHVHUYDWLYHV DOT-470 NC DOT Marble Maintenance Yard 8/9/23 Marble NC DJH 6379.23 5.51 Be in bailin 1340 13:55 14:15 14:35 5.5 gal 11 gal 16.5 gal 20.8 17.8 18.1 281.3 267.8 265.6 5.18 5.28 5.21 37.8 52.9 41.6 47.9 526 379 1.58 1.17 1.98 N/A YSIPP Eastern , HACH-003 x4 40 mL VOAs w/ HCl for VOCs b 6200B Bailer PVC 14:35 Pace Anal tical MW-13 53 63 Pol eth lene bgs 29.27 80s Sunn bgs JLH 2-inch TOC Cloud 6?%%%0DVWHU7HPSODWHV?)RUPV)RUPV?/RZ)ORZ*URXQGZDWHU6DPSOLQJ)RUPSGI /DVW8SGDWHG Job No: Well ID: Volume PXUJing DOTemp. S. Cond. pH ORP Turbidity Time PuUJHG Rate (mg//)(oC)(PS/cm)(SU)(mV)(NTU) Other )LHOG Parameters:B__________________________________________________________________________________________________B Parameters taken with: Field Filtration: Yes No 92/80(75,& GROUNDWATER SAMPLING RECORD'DWH: *5281':$7(R ),(/'PARAMETERS 6WDELOL]DWLRQFULWHULDJXLGHOLQHVIURPWKH(3$5HJLRQ/6$6'2SHUDWLQJ3URFHGXUHIRU*URXQGZDWHU6DPSOLQJ $SULO,IILHOGSDUDPHWHUVKDYHQRWVWDELOL]HGDIWHUWKUHHYROXPHVSXUJHDGGLWLRQDOZHOOYROXPHVDQGFRQWDFW3URMHFW0DQDJHU,IDZHOOLVSXUJHGGU\DVDPSOHPD\EHFROOHFWHGIROORZLQJVXIILFLHQWUHFKDUJHDQGZLWKLQKRXUV1RWLI\3URMHFW0DQDJHUDQGFROOHFWILHOGSDUDPHWHUVDWWLPHRIVDPSOHFROOHFWLRQ *HQHUDOL]HGStabilization Criteria 3XUJHDPLQLPXPRIWKUHHZHOOYROXPHV S+68 6SHFLILF&RQGXFWLYLW\ 7XUELGLW\&KHFNZLWK3URMHFW0DQDJHU 6LWH1DPH: 6LWH/RFDWLRQ: :6DPSOLQJ3HUVRQQHO___________________BBBBBBBBBBBBBBBBBBBBB:HDWKHU: ____________ 6FUHHQ,QWHUYDOIW 'HSWKWR:DWHUIW (TXLSPHQW0DWHULDO Well Diameter: 7RWDO:HOO'HSWKIW 6DPSOLQJ(TXLSPHQW &DVLQJ0DWHULDO 7RSRI&DVLQJ(OHYDWLRQIWPVO *DOORQVSHU:HOO9ROXPH 127(6 6DPSOHGDW 6DPSOH&RQGLWLRQ&OHDU&ORXG\2WKHU If \HV, which sample parameters were field filtered: 6DPSOH'HOLYHUHGWR $QDO\WLFDO3DUDPHWHUVDQG&RQWDLQHUV7\SHV1XPEHURI&RQWDLQHUV3UHVHUYDWLYHV DOT-470 NC DOT Marble Maintenance Yard 8/8/23 Marble NC DJH 125101.65 15.7 Be in ur in 1107 11:26 11:45 12:04 12:10 12:35 16 gal 32 gal 48 gal 64 gal 80 gal 19.1 19.1 19.3 18.7 18.5 322.3 292.2 232.7 229.2 235.4 6.57 6.43 6.66 6.65 6.63 30.1 47.9 47.4 51.2 56.3 7.72 5.10 5.13 4.48 2.67 2.39 2.38 2.39 2.52 2.48 N/A YSI-001, HACH-005 x4 40 mL VOAs w/ HCl for VOCs b 6200B Monsoon PVC 12:35 Pace Anal tical DW-1 110 125 Pol eth lene bgs 26.95 80s Partl Cloud bgs JLH 2-inch TOC Clear 6?%%%0DVWHU7HPSODWHV?)RUPV)RUPV?/RZ)ORZ*URXQGZDWHU6DPSOLQJ)RUPSGI /DVW8SGDWHG Job No: Well ID: Volume PXUJing DOTemp. S. Cond. pH ORP Turbidity Time PuUJHG Rate (mg//)(oC)(PS/cm)(SU)(mV)(NTU) Other )LHOG Parameters:B__________________________________________________________________________________________________B Parameters taken with: Field Filtration: Yes No 92/80(75,& GROUNDWATER SAMPLING RECORD'DWH: *5281':$7(R ),(/'PARAMETERS 6WDELOL]DWLRQFULWHULDJXLGHOLQHVIURPWKH(3$5HJLRQ/6$6'2SHUDWLQJ3URFHGXUHIRU*URXQGZDWHU6DPSOLQJ $SULO,IILHOGSDUDPHWHUVKDYHQRWVWDELOL]HGDIWHUWKUHHYROXPHVSXUJHDGGLWLRQDOZHOOYROXPHVDQGFRQWDFW3URMHFW0DQDJHU,IDZHOOLVSXUJHGGU\DVDPSOHPD\EHFROOHFWHGIROORZLQJVXIILFLHQWUHFKDUJHDQGZLWKLQKRXUV1RWLI\3URMHFW0DQDJHUDQGFROOHFWILHOGSDUDPHWHUVDWWLPHRIVDPSOHFROOHFWLRQ *HQHUDOL]HGStabilization Criteria 3XUJHDPLQLPXPRIWKUHHZHOOYROXPHV S+68 6SHFLILF&RQGXFWLYLW\ 7XUELGLW\&KHFNZLWK3URMHFW0DQDJHU 6LWH1DPH: 6LWH/RFDWLRQ: :6DPSOLQJ3HUVRQQHO___________________BBBBBBBBBBBBBBBBBBBBB:HDWKHU: ____________ 6FUHHQ,QWHUYDOIW 'HSWKWR:DWHUIW (TXLSPHQW0DWHULDO Well Diameter: 7RWDO:HOO'HSWKIW 6DPSOLQJ(TXLSPHQW &DVLQJ0DWHULDO 7RSRI&DVLQJ(OHYDWLRQIWPVO *DOORQVSHU:HOO9ROXPH 127(6 6DPSOHGDW 6DPSOH&RQGLWLRQ&OHDU&ORXG\2WKHU If \HV, which sample parameters were field filtered: 6DPSOH'HOLYHUHGWR $QDO\WLFDO3DUDPHWHUVDQG&RQWDLQHUV7\SHV1XPEHURI&RQWDLQHUV3UHVHUYDWLYHV DOT-470 NC DOT Marble Maintenance Yard 8/8/23 Marble NC DJH 12497.90 11.99 Be in ur in 0903 09:25 09:50 10:15 10:35 12 gal 24 gal 36 gal 48 gal 19.5 19.2 19.3 19.4 85.3 284.5 268.4 270.9 6.14 6.15 6.15 6.07 81.4 70.0 75.5 77.8 9.35 4.11 4.54 4.24 2.62 1.42 1.35 1.40 N/A YSI-001, HACH-005 x4 40 mL VOAs w/ HCl for VOCs b 6200B Monsoon PVC 10:35 Pace Anal tical DW-2 109 124 Pol eth lene bgs 49.01 80s Partl Cloud bgs JLH 2-inch TOC Clear Appendix E Historical Groundwater Results