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Home My WebLink AboutAS-3241_28414_CA_MRP_20230127_ALLAECOM 6000 Fairview Road, Suite 200 Charlotte, North Carolina 28210 Phone: (704) 522-0330 aecom.com January 27, 2023 Mr. Dan Murphy AECOM Project #: 60689928 North Carolina Department of Environmental Quality Division of Waste Management Ashville Regional Office 2090 U.S. Highway 70 Swannanoa, NC 28778 Subject:Groundwater Monitoring Report Speedway Store # 7972 502 Wilkesboro Blvd. Lenoir, Caldwell County, North Carolina UST Incident # 28414 Risk Classification: Intermediate Dear Mr. Murphy, On behalf of Speedway, LLC (Speedway) , AECOM Technical Services of North Carolina, Inc. (AECOM) is pleased to provide one electronic copy of the Groundwater Monitoring Report for the Speedway Store No. 7972, located at 502 Wilkesboro Blvd., Lenoir, Caldwell County, North Carolina. This report summarizes the groundwater, and surface water sampling activities that occurred October 4, 2022, and the MMPE event October 17, through October 21, 2022. If there are any questions or concerns regarding this report, please contact Brett G. Schaefer at (704) 499- 6991. Yours sincerely, Brett G. Schaefer, PE Marie Treiber Project Manager Regional Senior Project Manager Brett.Schaefer@aecom.com Marie.Trieber@aecom.com Speedway, LLC 500 Speedway Drive Enon, Ohio 45323 Phone: (919) 516-8069 Groundwater Monitoring Report Speedway Store No. 7972 502 Wilkesboro Boulevard SE Lenoir, Caldwell County, North Carolina Incident No. 28414 Project No.60689928 January 2023 AECOM ii Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 Quality Information Prepared by Reviewed by Erik Riegel Environmental Scientist Erik.Riegel@aecom.com Brett G. Schaefer, PE Project Manager Brett.Schaefer@aecom.com Reviewed by Marie Treiber Regional Senior Project Manager Marie.Treiber@aecom.com Prepared for: Speedway, LLC 500 Speedway Drive Enon, Ohio 45323 Phone: (919) 516-8069 Prepared by: AECOM Technical Services of North Carolina, Inc. 6000 Fairview Road, Suite 200 Charlotte, North Carolina 28210 Phone: (704) 522-0330 aecom.com Copyright © 2022 by AECOM All rights reserved. No part of this copyrighted work may be reproduced, distributed, or transmitted in any form or by any means without the prior written permission of AECOM. AECOM iii Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 Professional Certification Page I, Brett G. Schaefer, a Licensed Engineer for AECOM Technical Services of North Carolina, Inc., do certify that the information contained in this report is correct and accurate to the best of my knowledge. _________________________________ Brett G. Schaefer, PE AECOM Technical Services of North Carolina, Inc. AECOM Technical Services of North Carolina, Inc. is licensed to practice engineering in North Carolina. The certification number of the company or corporation is F-0458. AECOM iv Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 Table of Contents Executive Summary ............................................................................................................................................. 1-1 1 Introduction ............................................................................................................................................... 1-2 2 Site Background Information...................................................................................................................... 2-3 2.1 Site Identification ............................................................................................................................ 2-3 2.2 Contact Information ........................................................................................................................ 2-3 3 Site History and Characterization ............................................................................................................... 3-1 3.1 Underground Storage Tank Systems ............................................................................................... 3-1 3.2 Aboveground Storage Tank Systems............................................................................................... 3-1 3.3 Historical Releases ......................................................................................................................... 3-1 3.4 Site Characteristics ........................................................................................................................ 3-1 3.4.1 Zoning/Receptor Information ................................................................................................ 3-1 3.4.2 Site Geology and Hydrogeology ........................................................................................... 3-1 4 Receptor Information ................................................................................................................................. 4-1 4.1 Water Supply Wells ........................................................................................................................ 4-1 4.1.1 Private Water Supply Wells .................................................................................................. 4-1 4.1.2 Public Water Systems .......................................................................................................... 4-1 4.2 Surface Water ................................................................................................................................ 4-1 4.3 Wellhead Protection Areas .............................................................................................................. 4-1 5 Groundwater Investigation ......................................................................................................................... 5-2 5.1 Groundwater Gauging .................................................................................................................... 5-2 5.2 Groundwater Sampling ................................................................................................................... 5-2 5.3 Groundwater Analytical Results ...................................................................................................... 5-2 6 Surface Water Investigation ....................................................................................................................... 6-3 6.1 Surface Water Sampling ................................................................................................................. 6-3 7 MMPE Event ............................................................................................................................................. 7-4 7.1 MMPE Field Activities ..................................................................................................................... 7-4 8 Discussion ................................................................................................................................................ 8-1 9 References ............................................................................................................................................... 9-1 AECOM v Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 Appendices Appendix A.Groundwater Analytical Report Appendix B.Mobile Multi-Phase Extraction Report Figures Figure 1:Site Location Map Figure 2: Site Plan Figure 3: Groundwater Elevation Map, October 2022 Figure 4:Dissolved Benzene Iso-concentration Map, October 2022 Tables Table 1:Site History – UST Owner/Operator and Other Responsible Party Information Table 2:Site History – UST System and Other Release Information Table 3:Monitoring Well Construction Details Table 4:Summary of Historical Groundwater Elevations Table 5: Summary of Historical Groundwater Monitoring Results for Selected Compounds Table 6:Summary of Historical Surface Water Sampling Results for Selected Compounds Table 7:Summary of MMPE Event Table 8:Summary of Historical LNAPL Recovery Events AECOM vi Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 Acronyms Advanced Advanced Environmental Services, Inc. AECOM AECOM Technical Services of North Carolina, Inc. ARO Asheville Regional Office AST aboveground storage tanks bgs below ground surface CROMPCO CROMPCO, LLC. DWM Division of Waste Management EPA United States Environmental Protection Agency GCL Gross Contamination Levels GIS Geographic Information System LNAPL light non-aqueous phase liquid LSA Limited Site Assessment Mid-Atlantic Mid-Atlantic Associates, Inc. MMPE Mobile Multi-Phase Extraction NCDEQ North Carolina Department of Environmental Quality NCDENR North Carolina Department of Environment and Natural Resources Pace Pace Analytical PPM parts-per-million Site Speedway Store No. 7972 Speedway Speedway LLC STP submersible turbine pump UST underground storage tank VOC volatile organic compound YSI Yellow Springs Instrument AECOM 1-1 Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 Executive Summary As required by the North Carolina Department of Environmental Quality (NCDEQ), AECOM Technical Services of North Carolina, Inc. (AECOM) on behalf of Speedway, LLC (Speedway) has prepared this Groundwater Monitoring Report for Speedway Store No. 7972 (Site), located at 502 Wilkesboro Boulevard Southeast, Lenoir, Caldwell County, North Carolina (Figure 1). The Site formerly operated as a Wilco-Hess convenience store with gasoline, diesel, and kerosene sales. On October 1, 2014, Speedway acquired the site from Hess Corporation. Currently, the site is operational with convenience store with gasoline, diesel, and kerosene sales. This report includes the mobile multi- phase extraction (MMPE) event and groundwater sampling conducted in October 2022. The leak case was initial discovered on July 7, 2006, when a telephone cable worker noticed petroleum odors in a storm sewer drop inlet located near Wilkesboro Boulevard on the south side of the road. The worker contacted the Lenoir Fire Department which mobilized to the site and identified light non-aqueous phase liquid (LNAPL) in an adjoining drop inlet. Further investigation by the fire department identified LNAPL in the observation wells located adjacent to the gasoline and diesel tank beds. Incident No. 28414 was opened Mid-Atlantic Associates, Inc. (Mid-Atlantic) (Speedway’s former consultant) during one of their semi-annual groundwater and surface water sampling visits on June 8, 2021, discovered approximately four feet of LNAPL in monitoring well MW-1. Testing of the underground storage tank (UST) system was subsequently conducted by Crompco, LLC (CROMPCO) on June 10, 2021, and the regular unleaded gasoline line as well as the premium unleaded gasoline spill bucket failed tightness testing. The line failure occurred across the manifold in the former midgrade unleaded piping run. Tideland Construction capped the line at the dispenser and the former midgrade unleaded submersible turbine pump (STP). Crompco re-tested the regular unleaded line after repairs and obtained passing results on June 14, 2021. Although the spill bucket failed the hydrostatic testing, it is not believed to be a significant contributor to the LNAPL found in monitoring well MW-1. The 2006 release and the 2021 release have been deemed commingled by NCDEQ. A LNAPL gauging event was performed again on March 4, 2022. Measurable LNAPL was not detected in monitoring well MW-8 but monitoring well MW-1 contained approximately 3.84 ft of LNAPL. Two downgradient, offsite monitoring wells (MW-2 and MW-15) were also gauged on March 4, 2022, to confirm LNAPL was not migrating off site. LNAPL was not present in either of the aforementioned wells. The Site is currently in use as a convenience store and retail petroleum dispensing facility and operates two 12,000- gallon regular unleaded gasoline UST, one 12,000-gallon premium unleaded gasoline UST, one 12,000 diesel fuel USTs and one 10,000-gallon kerosene UST. The layout of the facility is showed on Figure 2. This report documents activities conducted October 4, 2022, and October 17, through October 21, 2022, which includes the sampling groundwater monitoring wells without LNAPL and a 96-hour MMPE event. Analysis of the groundwater samples collected on October 4, 2022, indicated benzene and other contaminants of concern continue to impact in the Site monitoring wells MW-1, MW-2, MW-3, MW-6, MW-7, MW-8, and MW-16 but do not exceed gross contamination levels (GCL). LNAPL was not detected in the monitoring wells sampled during this event. Surface water sampled from historic surface water sampling locations were below detection limits. Based on mass-removal calculations 208.29 pounds or 33.86 gallons of volatile organic compounds (VOCs) were removed as vapor during the MMPE event and resulted with no LNAPL being identified in any on site wells. Water level measurements taken from the site indicated that groundwater flow direction corresponded with historical flow direction which has been generally towards the southwest. AECOM, on behalf of Speedway recommends, continuing semi-annual groundwater sampling to monitor plume migration. AECOM 1-2 Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 1 Introduction As required by the North Carolina Department of Environmental Quality (NCDEQ), AECOM Technical Services of North Carolina, Inc. (AECOM) on behalf of Speedway LLC (Speedway) has prepared this Groundwater Monitoring Report for Speedway Store No. 7972 (Site), located at 502 Wilkesboro Boulevard Southeast, Lenoir, Caldwell County, North Carolina (Figure 1 and Figure 2). This report documents activities conducted October 4, 2022, and October 17, through October 21, 2022, which includes the sampling groundwater monitoring wells without LNAPL and a 96-hour Mobile Multi-Phase Extraction (MMPE) event. AECOM 2-3 Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 2 Site Background Information The following sections provide site background and contact information. 2.1 Site Identification – Date of Incident Report:July 18, 2006 – Facility ID: 0-033119 Incident Number: 28414 – Site Rank:Intermediate – Site Name:Speedway Store No. 7972 – Site Street Address:502 Wilkesboro Boulevard Southeast – City/Town: Lenoir Zip Code: 28645 County: Caldwell – Description of Geographical Data Point (e.g., dispenser): Site Property – Location Method (global positioning system, topographical map, other): Google Earth – Latitude (decimal degrees): 35.916295 °, Longitude (decimal degrees): -81.516153 ° 2.2 Contact Information – UST Owner: Speedway LLC. Address: 500 Speedway Drive, Enon, Ohio 45323 Telephone: (919) 516-8069 – UST Operator: Speedway LLC. Address: 500 Speedway Drive, Enon, Ohio 45323 Telephone: (919) 516-8069 – Property Owner: Speedway LLC. Address: 500 Speedway Drive, Enon, Ohio 45323 Telephone: (919) 516-8069 – Property Occupant Speedway LLC. Address: 500 Speedway Drive, Enon, Ohio 45323 Telephone: (919) 516-8069  Consultant/Contractor: AECOM Address: 6000 Fairview Road, Suite 200, Charlotte, North Carolina 28210 Telephone: (704) 522-0330 – Analytical Laboratory: Pace Analytical State Certification No. 5342 Address: 9800 Kincey Avenue, Suite 100, Huntersville, North Carolina 28078 Telephone: (704) 875-9092 AECOM 3-1 Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 3 Site History and Characterization The following sections provide information on the USTs operated at the Site and follows the general outline established in Guidelines for Assessment and Corrective Action for UST Releases (NCDEQ, 2022) and Guidelines for Site Checks, Tank Closure, and Initial Response and Abatement for UST Releases (NCDEQ, 2021) using the Comprehensive Tables for Corrective Action Guidelines Tables (NCDEQ, 2022). 3.1 Underground Storage Tank Systems UST owner operator and other responsible party information are provided in Table 1. A summary of current and former USTs maintained at the Site is provided below and summarized in Table 2. According to the Catawba County, North Carolina Geographic Information System (GIS) mapping service, the current property owner of the subject site is listed as PFJ Southeast LLC. On October 1, 2014, Speedway, LLC purchased the site from Wilco-Hess. On November 14, 2016, Speedway entered a joint venture with Pilot Flying J, while Speedway remains the responsible party of the USTs. 3.2 Aboveground Storage Tank Systems No aboveground storage tank systems (ASTs) are currently present on site. Based on available information, no ASTs have historically been present at the Site. 3.3 Historical Releases On July 7, 2006, a telephone cable worker noticed petroleum odors in a storm sewer drop inlet located near Wilkesboro Boulevard on the south side of the road. The worker contacted the Lenoir Fire Department which mobilized to the site and identified free product in an adjoining drop inlet. Further investigation by the fire department identified LNAPL in the observation wells located adjacent to the gasoline and diesel tank beds. A 24-hour Release and UST Leak Reporting Form was submitted to the North Carolina Division of Environment and Natural Resources (NCDENR), Division of Waste Management (DWM), UST Section, Asheville Regional Office (ARO) on July 18, 2006, and the site was assigned incident number 28414. 3.4 Site Characteristics The location of the Site is shown on a portion of the United States Geological Survey Lenoir, NC (2022) and Kings Creek, NC (2022) digital raster graphic file (Figure 1). The layout of the Site is found on Figure 2. The Site is currently operational. The Site is occupied by a Speedway convenience store with Speedway gasoline operations. The site is located at 502 Wilkesboro Boulevard Southeast, Lenoir, North Carolina and is accessed from Wilkesboro Boulevard, located North of the site and Hibriten Drive, located west of the site. Various commercial and residential properties surround the Site. 3.4.1 Zoning/Receptor Information The Site and adjoining properties are currently zoned Residential and business (Caldwell GIS Viewer). Receptor information for the site was documented in Mid-Atlantic’s November 13, 2006, Phase I LSA Report. A receptor survey update was not completed for this phase of work. For additional details, please refer to the LSA report. 3.4.2 Site Geology and Hydrogeology Site geology was evaluated based on historic consultant Mid-Atlantic Associates, Inc. (Mid-Atlantic) and current investigations. The site is located within the intrusive rocks of the Inner Piedmont physiographic province. The site AECOM 3-2 Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 appears to be located on top of metamorphic rocks described as “Migmatitic Granitic Gneiss - foliated to massive, granitic to quartz dioritic; biotite gneiss and amphibolite common.”. In general, the soils encountered at the Site consist of sandy and clayey silt to a depth of 11.5 feet below ground surface (bgs), where saprolite was encountered. Geoprobe refusal was encountered at 14.0 feet bgs, but hollow stem augers were advanced to a depth of 20 feet bgs without auger refusal. Groundwater is encountered at approximately 8.47 feet bgs (MW-16) to 13.00 feet bgs (MW-3). Based on the results of the October 2022 gauging event, groundwater flow is to the southwest, which is generally consistent with historical groundwater flow. Historical groundwater elevations are summarized on Table 4, and a groundwater flow map (Figure 3) was constructed based on the October 2022 gauging results. The hydraulic gradient, as measured from monitoring well MW-3 to MW-16, is 0.0340 ft/ft [(89.71-83.55)/183.63]. Hydraulic Gradient =Δ𝑦 Δ𝑥 Δy = Change in groundwater elevation from monitoring well MW-3 to MW-16 Δx = Distance between monitoring well MW-3 and MW-16 AECOM 4-1 Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 4 Receptor Information 4.1 Water Supply Wells The previous consultant (Mid Atlantic) conducted a water supply well survey in 2006 to identify the presence of water supply wells within a 1,500-foot radius from the Site and is documented in Mid-Atlantic’s November 13, 2006, Phase I Limited Site Assessment (LSA) Report. 4.1.1 Private Water Supply Wells No water supply wells are present within 250 feet of the source area of the release. Two wells were identified between 250 and 1,000 feet of the source area, both are not in use. And two wells were identified between 1,000 and 1,500 feet of the source area, both are not in use. For additional details, please refer to the Mid Atlantic LSA report. 4.1.2 Public Water Systems The Site obtains water from the City of Lenoir municipal water-supply system, which draws it water from Lake Rhodhiss off of the Catawba River. Based on currently available information, the properties surrounding the site receive their municipal water supplies through buried piping that runs beneath the streets and highway easements. 4.2 Surface Water The nearest surface water is Lower Creek located approximately 450 feet southeast of the subject site. A stormwater drainage ditch is located on the southwestern side of Hibriten Drive, approximately 140 feet from the source area of the release. The ditch, which drains south into Lower Creek. The topographic quadrangle map does not show this drainage ditch. The Site is classified as intermediate risk due to the presence of this surface water body. 4.3 Wellhead Protection Areas According to the NCDEQ Well Head Protection website, last updated in July 2022, there are no approved wellhead protection plans located in Caldwell County. AECOM 5-2 Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 5 Groundwater Investigation During the current monitoring period, activities included groundwater gauging and sampling. 5.1 Groundwater Gauging Monitoring wells MW-1 through MW-8, MW-9D, MW-10 through MW-16, were gauged for depth to water and depth to LNAPL, if present. Depths to groundwater ranged from 8.47 ft bgs (MW-16) to 13.00 ft bgs (MW-3) in the site monitoring wells. Monitoring wells MW-10, MW-11, and MW-15 were not gauged because they were inaccessible at the time of gauging. None of the wells gauged reported LNAPL. 5.2 Groundwater Sampling Prior to the collection of a groundwater sample for laboratory analysis, the depth to liquid or LNAPL was measured using an electronic oil-water interface probe. If no LNAPL was present, the well was purged of at least three well volumes using a disposable bailer. Depth to water and calculated groundwater elevations for the current and historic gauging events are included on Table 4. 5.3 Groundwater Analytical Results During this monitoring period, select monitoring wells were sampled. Monitoring wells MW-1, MW-2, MW-3, MW-6, MW-7, MW-8, MW-9D, MW-10, MW-11, MW-12, MW-13, MW-14, MW-15, and MW-16 were sampled on October 4, 2022 and analyzed for analysis volatile organic compounds (VOCs) via EPA Method SM 6200B. Once the wells had been properly purged, natural attenuation parameter readings were collected using a Yellow Springs Instrument (YSI) meter and groundwater samples were collected from each location using dedicated disposable polyethylene bailers attached to nylon rope. To collect a sample, the bailer was slowly lowered to a depth just beneath the water surface in the well. The bailer was then recovered, and the contents carefully decanted into laboratory supplied sample containers, properly preserved, and delivered to Pace Analytical (Pace), a North Carolina- certified laboratory. Groundwater sampling results indicated petroleum hydrocarbon continued to impact the Site monitoring wells during this reporting period. - Benzene concentrations were not observed above the Gross Contamination Levels (GCL) in site monitoring wells. No other compounds exceeded GCLs. Analytical results are summarized in Table 5. Dissolved benzene Iso-concentration map, October 2022 sampling event are included as Figure 4. Laboratory analytical reports are included in Appendix A. AECOM 6-3 Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 6 Surface Water Investigation During the current monitoring period, activities included surface water sampling. 6.1 Surface Water Sampling During this monitoring period, STREAM-1 STREAM-3 were sampled on October 4, 2022 and analyzed for analysis VOCs via EPA Method SM 6200B. During this event, STREAM-2 was inaccessible and was not sampled during this sampling event. Surface water sampling results indicated surface water samples were below detection limits during this reporting period. - Benzene concentrations were not observed in surface water samples. No other compounds were detected. Analytical results are summarized in Table 6. Dissolved benzene Iso-concentration map, October 2022 sampling event are included as Figure 4. Laboratory analytical reports are included in Appendix A. AECOM 7-4 Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 7 MMPE Event During the current monitoring period, activities included one MMPE event conducted by Advanced Environmental Services, Inc. (Advanced) on October 17, through October 21, 2022. 7.1 MMPE Field Activities During this field event, monitoring wells MW-1 and MW-8 were the extraction point utilized. During the event a total of 4,710 gallons of product/water mix were removed from the site and properly disposed at a certified North Carolina disposal facility. Field gauged VOCs decreased from 7,800 parts per-million (ppm) to 3,600 ppm throughout the event. Based on mass-removal calculations 208.29 pounds or 33.86 gallons of VOCs were removed as vapor. Following the event, no LNAPL was identified in any well. Liquid and vapor removal totals for the current and historic MMPE and LNAPL recovery events are included on Table 7 and Table 8, respectively. For additional details from the event see the Advanced, Mobile Multi-Phase Extraction Report included in Appendix B. AECOM 9-1 Speedway 7972 Lenoir, NCGroundwater Monitoring Report December 2022 8 Discussion Analysis of the groundwater samples collected on October 4, 2022, indicated benzene and other contaminates of concern continue to impact in the Site monitoring wells MW-1, MW-2, MW-3, MW-6, MW-7, MW-8, and MW-16 but do not exceed GCL. Analysis of the surface water samples collected October 4, 2022, indicated no concentration of concerns were impacting the surface water sampling locations during this reporting period and the MMPE event resulted with no LNAPL being identified in any on site well. Based on the results of the groundwater monitoring report:  LNAPL was not detected in the monitoring wells sampled during this event.  Groundwater sampled from on-site wells did not exhibit petroleum compounds at concentrations exceeding their respective GCLs.  Surface water sampled from historic surface water sampling locations were below detection limits.  MMPE event resulted with no LNAPL being identified in any on site wells.  Water level measurements collected from the site indicated that groundwater flow direction corresponded with historical flow direction which has been generally towards the southwest. AECOM, on behalf of Speedway recommends the following additional actions:  Continue semi-annual groundwater sampling to monitor plume migration. 9 References NCDEQ, 2021. Guidelines for Site Checks, Tank Closure, and Initial Response and Abatement for UST Releases. Change 11, effective May 17, 2021. NCDEQ, 2022. Guidelines for Assessment and Corrective Action for UST Releases. Effective March 7, 2022. Figures 2,0002,000 N SITE LOCATION I. DUMITRU FIGURE 1SITE LOCATION MAP Source: Topo USGS 7.5 Minute Topographic Map Quadrangle: Lenoir, NC Copyright: 2022 National Geographic Society DATE:DRAWN BY:REVIEWED BY:PROJECT NO.:Fil e : C : \ C o n f i d e n t i a l \ A E C O M \ 7 - E l e v e n \ S i t e s F o l d e r s \ N o r t h C a r o l i n a \ 4 4 6 9 7 - 7 9 7 2 L e n o i r \ 4 4 6 9 7 - 7 9 7 2 L e n o i r . d w g L a y o u t : S i t e L o c a t i o n M a p D a t e : 0 9 D e c , 2 0 2 2 X r e f s : 00 SCALE IN FEET: NOTE: ALL MAP FEATURES ARE APPROXIMATE IN SCALE AND LOCATION. DECEMBER 2022 E. RIEGEL Speedway Store #7972 502 Wilkesboro Boulevard Northeast Lenoir, NC 28645 60689928 Speedway LLC. Parking Ca r W a s h Grass La n d s c a p i n g SD-2 SD-4 SD-3 Concrete OW-3 OW-4OW-1 OW-2 MW-1 SD-1 MW-3 MW-4 MW-5 MW-6 MW-9D MW-8MW-7 MW-2 MW-10 MW-11 MW-12 MW-13 MW-14 STREAM #2 STREAM #1 Bridge STREAM #3 MW-15 MW-16 Concrete Landscaping Speedway Store #7972 H i b r i t e n D r i v e S o u t h e a s t W i l k e s b o r o B o u l e v a r d N o r t h e a s t L o w e r C r e e k Canopy &Dispenser Is l a n d s Canopy &Dispenser I s l a n d s Dominos Pizza Dominos Pizza Dumpsters Enclosure Tank Field Outfall Sign SCALE IN FEET: 40 400 DATE:DRAWN BY:REVIEWED BY:PROJECT NO.:C: \ C o n f i d e n t i a l \ A E C O M \ 7 - E l e v e n \ S i t e s F o l d e r s \ N o r t h C a r o l i n a \ 4 4 6 9 7 - 7 9 7 2 L e n o i r \ 4 4 6 9 7 - 7 9 7 2 L e n o i r . d w g , 12 / 9 / 2 0 2 2 6 : 5 6 P M , Du m i t r u , I o n u t , PD F 9 9 5 . p c 3 , Us e r 3 2 7 6 7 , 1'- 0 " = 1 ' - 0 " N I. DUMITRUDECEMBER 2022 E. RIEGEL FIGURE 2 SITE PLAN LEGEND 12,000-Gal. PUL Gasoline 12,000-Gal. RUL Gasoline Product Piping Natural Gas Line Stream Storm Sewer Sanitary Sewer NOTE: ALL MAP FEATURES ARE APPROXIMATE IN SCALE AND LOCATION. Speedway Store #7972 502 Wilkesboro Boulevard Northeast Lenoir, NC 28645 60689928 Speedway LLC. 12,000-Gal. Diesel 10,000-Gal. Kerosene Approximate Property Boundary Fence Product Dispenser Underground Storage Tank Utility Pole / Power Pole Light Post / Traffic Light Storm Drain Overhead Wire Monitoring Well Observation Well Surface Water Sample Deep Monitoring Well Parking Ca r W a s h Grass La n d s c a p i n g SD-2 SD-4 SD-3 Concrete OW-3 OW-4OW-1 OW-2 MW-1 SD-1 MW-3 MW-4 MW-5 MW-6 MW-9D MW-7 MW-10 MW-11 MW-12 MW-13 MW-14 STREAM #2 STREAM #1 Bridge STREAM #3 MW-15 MW-16 Concrete Landscaping Speedway Store #7972 H i b r i t e n D r i v e S o u t h e a s t W i l k e s b o r o B o u l e v a r d N o r t h e a s t L o w e r C r e e k Canopy &Dispenser Is l a n d s Canopy &Dispenser Is l a n d s Dominos Pizza Dominos Pizza Dumpsters Enclosure Tank Field Outfall Sign MW-2 MW-8 SCALE IN FEET: 40 400 DATE:DRAWN BY:REVIEWED BY:PROJECT NO.:C:\ C o n f i d e n t i a l \ A E C O M \ 7 - E l e v e n \ S i t e s F o l d e r s \ N o r t h C a r o l i n a \ 4 4 6 9 7 - 7 9 7 2 L e n o i r \ 4 4 6 9 7 - 7 9 7 2 L e n o i r . d w g , 12 / 2 2 / 2 0 2 2 2 : 1 3 P M , Du m i t r u , I o n u t , PD F 9 9 5 . p c 3 , Us e r 3 2 7 6 7 , 1'- 0 " = 1 ' - 0 " N I. DUMITRUDECEMBER 2022 E. RIEGEL FIGURE 3GROUNDWATER ELEVATION MAP OCTOBER 4, 2022 LEGEND 91.60 NM 12,000-Gal. PUL Gasoline 12,000-Gal. RUL Gasoline Product Piping Natural Gas Line Stream Storm Sewer Groundwater Elevation (Ft) Not Measured Groundwater Elevation Contour (Ft) Dashed Where Inferred Approximate Groundwater Flow Direction Sanitary Sewer NOTE: ALL MAP FEATURES ARE APPROXIMATE IN SCALE AND LOCATION. Speedway Store #7972 502 Wilkesboro Boulevard Northeast Lenoir, NC 28645 60689928 Speedway LLC. 12,000-Gal. Diesel 10,000-Gal. Kerosene 92 Approximate Property Boundary Fence Product Dispenser Underground Storage Tank Utility Pole / Power Pole Light Post / Traffic Light Storm Drain Overhead Wire Monitoring Well Observation Well Surface Water Sample Deep Monitoring Well NM 92.71 91.33 89.71 91.56 * 92.67 91.60 90.80 88.60 91.01 84.57 84.00 83.55NM NM 92.84 84 86 88 90 92 84 86 88 90 92 Not Used in Contouring (Deep Well)* Parking Ca r W a s h Grass La n d s c a p i n g SD-2 SD-4 SD-3 Concrete OW-3 OW-4OW-1 OW-2 MW-1 SD-1 MW-3 MW-4 MW-5 MW-6 MW-9D MW-7 MW-10 MW-11 MW-12 MW-13 MW-14 STREAM #2 STREAM #1 Bridge STREAM #3 MW-15 MW-16 Concrete Landscaping Speedway Store #7972 H i b r i t e n D r i v e S o u t h e a s t W i l k e s b o r o B o u l e v a r d N o r t h e a s t L o w e r C r e e k Canopy &Dispenser Is l a n d s Canopy &Dispenser Is l a n d s Dominos Pizza Dominos Pizza Dumpsters Enclosure Tank Field Outfall Sign MW-2 MW-8 12,000-Gal. Diesel 10,000-Gal. Kerosene Approximate Property Boundary Fence Product Dispenser Underground Storage Tank Utility Pole / Power Pole Light Post / Traffic Light Storm Drain Overhead Wire Monitoring Well Observation Well Surface Water Sample Deep Monitoring Well NS NS 27.4 ND* 207 3.7 SCALE IN FEET: 40 400 DATE:DRAWN BY:REVIEWED BY:PROJECT NO.:C:\ C o n f i d e n t i a l \ A E C O M \ 7 - E l e v e n \ S i t e s F o l d e r s \ N o r t h C a r o l i n a \ 4 4 6 9 7 - 7 9 7 2 L e n o i r \ 4 4 6 9 7 - 7 9 7 2 L e n o i r . d w g , 12 / 2 2 / 2 0 2 2 1 : 5 0 P M , Du m i t r u , I o n u t , PD F 9 9 5 . p c 3 , Us e r 3 2 7 6 7 , 1'- 0 " = 1 ' - 0 " N I. DUMITRUDECEMBER 2022 E. RIEGEL FIGURE 4DISSOLVED BENZENE ISO-CONCENTRATION MAP OCTOBER 4, 2022 LEGEND NS µg/L 12,000-Gal. PUL Gasoline 12,000-Gal. RUL Gasoline Product Piping Natural Gas Line Stream Storm Sewer Not Sampled Micrograms per Liter Sanitary Sewer NOTE: ALL MAP FEATURES ARE APPROXIMATE IN SCALE AND LOCATION. Speedway Store #7972 502 Wilkesboro Boulevard Northeast Lenoir, NC 28645 60689928 Speedway LLC. 207 Benzene Isoconcentration in µg/L Estimated Benzene Isoconcentration Contour in µg/L (Dashed Where Inferred) Not Detected At or Above Laboratory's Practical Quantitation Limit 10 NDND ND ND ND NDND ND ND ND 597 ND ND NS 110 10 0 50 0 Not Used in Contouring (Deep Well)* Tables City Telephone Number Enon Speedway 10/1/2014 - Current Incident number 28414 State Zip OH 45323 919-516-8069 Name of UST Operator Date of Operation Name of UST Owner Date of OperationSERVCO Speedway 10/1/2014 - Current Address 500 Speedway Drive TABLE 1 SITE HISTORY - UST OWNER/OPERATOR AND OTHER RESPONSIBLE PARTY INFORMATION SPEEDWAY #7972 LENOIR, NORTH CAROLINA INCIDENT NO.: 28414 UST ID Number 1, 2, 3, 4, 5 Facility ID Number 0-033119 UST ID Number Current / Last Contents Previous Contents Capacity (gallons) Construction Details Tank Dimensions Associated Piping and Date Installed Current Status 1 Regular Unleaded Gasoline Gasoline 12,000 Double-Walled steel/fiberglass 11' x 28'Unk 11/01/1989 Active 2 Regular Unleaded Gasoline Gasoline 12,000 Double-Walled steel/fiberglass 11' x 28'Unk 11/01/1989 Active 3 Premium Unleaded Gasoline Gasoline 12,000 Double-Walled steel/fiberglass 11' x 28'Unk 11/01/1989 Active 4 Diesel Diesel 12,000 Double-Walled steel/fiberglass 11' x 28'Unk 11/01/1989 Active 5 Kerosene Kerosene 10,000 Double-Walled steel/fiberglass 8' x 27'Unk 11/01/1989 Active TABLE 2 SITE HISTORY - UST SYSTEM AND OTHER RELEASE INFORMATION SPEEDWAY #7972 LENOIR, NORTH CAROLINA INCIDENT NO.: 28414 MW-1 2 9/20/2006 20 5 - 20 MW-2 2 5/31/2011 15 5 - 15 MW-3 2 6/1/2011 18 8 - 18 MW-4 2 5/31/2011 16.5 6.5 - 16.5 MW-5 2 5/31/2011 17 7 - 17 MW-6 2 5/31/2011 18 8 - 18 MW-7 2 6/1/2011 17 7 - 17 MW-8 2 6/1/2011 16 6 - 16 MW-9D 2 6/2/2011 80 40 - 80 MW-10 2 8/30/2011 21 11 - 21 MW-11 2 8/29/2011 16 6 - 16 MW-12 2 8/29/2011 17 7 - 17 MW-13 2 8/30/2011 16 6 - 16 MW-14 2 8/30/2011 16 6 - 16 MW-15 2 8/3/2016 17 7 - 17 MW-16 2 8/3/2016 16 6 - 16 NOTES: BLS - Below land surface TABLE 3 MONITORING WELL CONSTRUCTION DETAILS SPEEDWAY 7972 LENOIR, NORTH CAROLINA INCIDENT NO.: 28414 WELL NUMBER DIAMETER (INCHES) CONSTRUCTION DATE CASING DEPTH (FEET BLS)INTERVAL (FEET WELL NUMBER DATE TOC (ft)DTLNAPL (ft)APPARENT LNAPL THICKNESS (ft)DTW (ft), BTOC CORRECTED DTW (ft)BGS (ft) MW-1 09/21/06 102.18 ----11.05 --91.13 MW-1 06/02/11 102.18 ----11.01 --91.17 MW-1 08/29/11 102.18 11.54 0.56 12.10 11.69 90.49 MW-1 04/27/12 102.18 ----10.74 --91.44 MW-1 08/16/12 102.18 ----11.34 --90.84 MW-1 02/13/13 102.18 ----10.81 --91.37 MW-1 09/05/13 102.18 ----10.79 --91.39 MW-1 05/01/14 102.18 ----10.46 --91.72 MW-1 09/23/14 102.18 ----11.30 --90.88 MW-1 10/28/15 102.18 ----10.70 --91.48 MW-1 08/03/16 102.18 ----11.38 --90.80 MW-1 12/21/17 102.18 ----11.10 --91.08 MW-1 06/27/18 102.18 NM NM NM NM NM MW-1 03/25/19 102.18 ----10.49 --91.69 MW-1 11/21/19 102.18 ----11.37 --90.81 MW-1 06/18/20 102.18 ----9.90 --92.28 MW-1 11/18/20 102.18 ----9.31 --92.87 MW-1 06/08/21 102.18 11.85 4.00 15.85 12.93 89.25 MW-1 07/15/21 102.18 10.00 3.38 13.38 10.91 91.27 MW-1 12/20/21 102.18 11.51 0.14 11.65 11.55 90.63 MW-1 03/04/22 102.18 9.41 3.84 13.25 10.45 91.73 MW-1 03/30/22 102.18 9.45 3.74 13.19 10.46 91.72 MW-1 10/04/22 102.18 ----10.58 --91.60 MW-2 Well did not exist MW-2 06/02/11 98.52 ----7.90 --90.62 MW-2 08/29/11 98.52 ----8.45 --90.07 MW-2 04/27/12 98.52 ----7.27 --91.25 MW-2 08/16/12 98.52 ----8.39 --90.13 MW-2 02/13/13 98.52 ----8.09 --90.43 MW-2 09/05/13 98.52 ----8.32 --90.20 MW-2 05/01/14 98.52 ----8.14 --90.38 MW-2 09/23/14 98.52 ----8.51 --90.01 MW-2 10/28/15 98.52 ----8.06 --90.46 MW-2 08/03/16 98.52 NM NM NM NM NM MW-2 12/21/17 98.52 NM NM NM NM NM MW-2 06/27/18 98.52 NM NM NM NM NM MW-2 03/25/19 98.52 NM NM NM NM NM MW-2 11/21/19 98.52 NM NM NM NM NM MW-2 06/18/20 98.52 NM NM NM NM NM MW-2 11/18/20 98.52 NM NM NM NM NM MW-2 06/08/21 98.52 NM NM NM NM NM MW-2 07/15/21 98.52 NM NM NM NM NM MW-2 12/20/21 98.52 NM NM NM NM NM MW-2 03/04/22 98.52 ----8.10 --90.42 MW-2 03/30/22 98.52 ----8.15 --90.37 MW-2 10/04/22 99.52 ----8.51 --91.01 MW-3 Well did not exist MW-3 06/02/11 102.71 ----12.87 --89.84 MW-3 08/29/11 102.71 ----13.50 --89.21 MW-3 04/27/12 102.71 ----12.23 --90.48 MW-3 08/16/12 102.71 ----12.30 --90.41 MW-3 02/13/13 102.71 ----12.09 --90.62 MW-3 09/05/13 102.71 ----12.91 --89.80 MW-3 05/01/14 102.71 ----12.28 --90.43 MW-3 09/23/14 102.71 ----13.19 --89.52 MW-3 10/28/15 102.71 ----11.26 --91.45 MW-3 08/03/16 102.71 ----12.85 --89.86 MW-3 12/21/17 102.71 ----11.86 --90.85 MW-3 06/27/18 102.71 NM NM NM NM NM MW-3 03/25/19 102.71 ----12.70 --90.01 MW-3 11/21/19 102.71 ----13.15 --89.56 MW-3 06/18/20 102.71 ----11.38 --91.33 MW-3 11/18/20 102.71 ----12.01 90.70 MW-3 06/08/21 102.71 ----13.19 --89.52 MW-3 07/15/21 102.71 NM NM NM NM NM MW-3 12/20/21 102.71 ----13.22 --89.49 MW-3 03/30/22 102.71 ----12.53 --90.18 MW-3 10/04/22 102.71 ----13.00 --89.71 TABLE 4SUMMARY OF HISTORICAL GROUNDWATER ELEVATIONSSPEEDWAY 7972LENOIR, NORTH CAROLINAINCIDENT NO.: 28414 WELL NUMBER DATE TOC (ft)DTLNAPL (ft)APPARENT LNAPL THICKNESS (ft)DTW (ft), BTOC CORRECTED DTW (ft)BGS (ft) MW-4 Well did not exist MW-4 06/02/11 103.37 ----11.76 --91.61 MW-4 08/29/11 103.37 ----12.47 --90.90 MW-4 04/27/12 103.37 ----11.41 --91.96 MW-4 08/16/12 103.37 ----12.28 --91.09 MW-4 02/13/13 103.37 ----11.37 --92.00 MW-4 09/05/13 103.37 ----11.60 --91.77 MW-4 05/01/14 103.37 ----11.22 --92.15 MW-4 09/23/14 103.37 ----12.06 --91.31 MW-4 10/28/15 103.37 ----11.92 --91.45 MW-4 08/03/16 103.37 NM NM NM NM NM MW-4 12/21/17 103.37 NM NM NM NM NM MW-4 06/27/18 103.37 NM NM NM NM NM MW-4 03/25/19 103.37 NM NM NM NM NM MW-4 11/21/19 103.37 NM NM NM NM NM MW-4 06/18/20 103.37 NM NM NM NM NM MW-4 11/18/20 103.37 NM NM NM NM NM MW-4 06/08/21 103.37 NM NM NM NM NM MW-4 07/15/21 103.37 NM NM NM NM NM MW-4 12/20/21 103.37 NM NM NM NM NM MW-4 03/30/22 103.37 NM NM NM NM NM MW-4 10/04/22 103.37 ----12.04 --91.33 MW-5 Well did not exist MW-5 06/02/11 103.23 ----10.23 --93.00 MW-5 08/29/11 103.23 ----10.80 --92.43 MW-5 04/27/12 103.23 ----10.14 --93.09 MW-5 08/16/12 103.23 ----10.69 --92.54 MW-5 02/13/13 103.23 ----10.12 --93.11 MW-5 09/05/13 103.23 ----10.09 --93.14 MW-5 05/01/14 103.23 ----10.01 --93.22 MW-5 09/23/14 103.23 ----10.43 --92.80 MW-5 10/28/15 103.23 ----10.53 --92.70 MW-5 08/03/16 103.23 NM NM NM NM NM MW-5 12/21/17 103.23 NM NM NM NM NM MW-5 06/27/18 103.23 NM NM NM NM NM MW-5 03/25/19 103.23 NM NM NM NM NM MW-5 11/21/19 103.23 NM NM NM NM NM MW-5 06/18/20 103.23 NM NM NM NM NM MW-5 11/18/20 103.23 NM NM NM NM NM MW-5 06/08/21 103.23 NM NM NM NM NM MW-5 07/15/21 103.23 NM NM NM NM NM MW-5 12/20/21 103.23 NM NM NM NM NM MW-5 03/30/22 103.23 NM NM NM NM NM MW-5 10/04/22 103.23 ----10.52 --92.71 MW-6 Well did not exist MW-6 06/02/11 103.85 ----10.74 --93.11 MW-6 08/29/11 103.85 ----11.34 --92.51 MW-6 04/27/12 103.85 ----10.69 --93.16 MW-6 08/16/12 103.85 ----11.19 --92.66 MW-6 02/13/13 103.85 ----10.66 --93.19 MW-6 09/05/13 103.85 ----10.59 --93.26 MW-6 05/01/14 103.85 ----10.48 --93.37 MW-6 09/23/14 103.85 ----10.96 --92.89 MW-6 10/28/15 103.85 ----11.04 --92.81 MW-6 08/03/16 103.85 NM NM NM NM NM MW-6 12/21/17 103.85 NM NM NM NM NM MW-6 06/27/18 103.85 NM NM NM NM NM MW-6 03/25/19 103.85 NM NM NM NM NM MW-6 11/21/19 103.85 NM NM NM NM NM MW-6 06/18/20 103.85 NM NM NM NM NM MW-6 11/18/20 103.85 NM NM NM NM NM MW-6 06/08/21 103.85 NM NM NM NM NM MW-6 07/15/21 103.85 NM NM NM NM NM MW-6 12/20/21 103.85 NM NM NM NM NM MW-6 03/30/22 103.85 ----10.65 --93.20 MW-6 10/04/22 103.85 ----11.01 --92.84 WELL NUMBER DATE TOC (ft)DTLNAPL (ft)APPARENT LNAPL THICKNESS (ft)DTW (ft), BTOC CORRECTED DTW (ft)BGS (ft) MW-7 Well did not exist MW-7 06/02/11 101.70 ----9.24 --92.46 MW-7 08/29/11 101.70 ----9.64 --92.06 MW-7 04/27/12 101.70 ----9.18 --92.52 MW-7 08/16/12 101.70 ----9.46 --92.24 MW-7 02/13/13 101.70 ----9.13 --92.57 MW-7 09/05/13 101.70 ----9.02 --92.68 MW-7 05/01/14 101.70 ----8.98 --92.72 MW-7 09/23/14 101.70 ----9.39 --92.31 MW-7 10/28/15 101.70 ----9.18 --92.52 MW-7 08/03/16 101.70 NM NM NM NM NM MW-7 12/21/17 101.70 NM NM NM NM NM MW-7 06/27/18 101.70 NM NM NM NM NM MW-7 03/25/19 101.70 NM NM NM NM NM MW-7 11/21/19 101.70 NM NM NM NM NM MW-7 06/18/20 101.70 NM NM NM NM NM MW-7 11/18/20 101.70 NM NM NM NM NM MW-7 06/08/21 101.70 NM NM NM NM NM MW-7 07/15/21 101.70 NM NM NM NM NM MW-7 12/20/21 101.70 NM NM NM NM NM MW-7 03/30/22 101.70 ----9.03 --92.67 MW-7 10/04/22 101.70 ----9.36 --92.67 MW-8 Well did not exist MW-8 06/02/11 102.29 ----10.92 --91.37 MW-8 08/29/11 102.29 11.74 0.26 12.00 11.81 90.48 MW-8 04/27/12 102.29 ----11.14 --91.15 MW-8 08/16/12 102.29 11.51 0.04 11.55 11.52 90.74 MW-8 02/13/13 102.29 ----11.10 --91.19 MW-8 09/05/13 102.29 ----11.26 --91.03 MW-8 05/01/14 102.29 ----10.09 --92.20 MW-8 09/23/14 102.29 ----11.59 --90.70 MW-8 10/28/15 102.29 ----10.89 --91.40 MW-8 08/03/16 102.29 ----11.61 --90.68 MW-8 12/21/17 102.29 ----11.29 --91.00 MW-8 06/27/18 102.29 NM NM NM NM NM MW-8 11/21/19 102.29 ----11.66 --90.63 MW-8 06/18/20 102.29 ----10.73 --91.56 MW-8 11/18/20 102.29 ----10.74 --91.55 MW-8 06/08/21 102.29 ----11.64 --90.65 MW-8 07/15/21 102.29 NM NM NM NM NM MW-8 12/20/21 102.29 11.92 0.04 11.96 11.93 90.36 MW-8 03/04/22 102.29 ----11.29 --91.00 MW-8 03/30/22 102.29 11.23 0.01 11.24 11.23 91.06 MW-8 10/04/22 102.29 ----11.49 --90.80 MW-9D Well did not exist MW-9D 06/02/11 102.64 ----78.29 --24.35 MW-9D 08/29/11 102.64 ----14.40 --88.24 MW-9D 04/27/12 102.64 ----10.75 --91.89 MW-9D 08/16/12 102.64 ----11.03 --91.61 MW-9D 02/14/13 102.64 ----10.32 --92.32 MW-9D 09/05/13 102.64 ----9.96 --92.68 MW-9D 05/01/14 102.64 ----10.26 --92.38 MW-9D 09/23/14 102.64 ----11.16 --91.48 MW-9D 10/28/15 102.64 ----10.80 --91.84 MW-9D 08/03/16 102.64 NM NM NM NM NM MW-9D 12/21/17 102.64 NM NM NM NM NM MW-9D 06/27/18 102.64 NM NM NM NM NM MW-9D 03/25/19 102.64 NM NM NM NM NM MW-9D 11/21/19 102.64 NM NM NM NM NM MW-9D 06/18/20 102.64 NM NM NM NM NM MW-9D 11/18/20 102.64 NM NM NM NM NM MW-9D 06/08/21 102.64 NM NM NM NM NM MW-9D 07/15/21 102.64 NM NM NM NM NM MW-9D 12/20/21 102.64 NM NM NM NM NM MW-9D 03/30/22 102.64 NM NM NM NM NM MW-9D 10/04/22 102.64 ----11.08 --91.56 WELL NUMBER DATE TOC (ft)DTLNAPL (ft)APPARENT LNAPL THICKNESS (ft)DTW (ft), BTOC CORRECTED DTW (ft)BGS (ft) MW-10 Well did not exist MW-10 08/29/11 98.02 ----15.53 --82.49 MW-10 04/27/12 98.02 ----13.25 --84.77 MW-10 08/16/12 98.02 ----13.77 --84.25 MW-10 02/13/13 98.02 ----13.38 --84.64 MW-10 09/05/13 98.02 ----13.90 --84.12 MW-10 05/01/14 98.02 ----13.11 --84.91 MW-10 09/23/14 98.02 ----14.46 --83.56 MW-10 10/28/15 98.02 ----11.83 --86.19 MW-10 08/03/16 98.02 NM NM NM NM NM MW-10 12/21/17 98.02 NM NM NM NM NM MW-10 06/27/18 98.02 NM NM NM NM NM MW-10 11/21/19 98.02 NM NM NM NM NM MW-10 06/18/20 98.02 NM NM NM NM NM MW-10 11/18/20 98.02 NM NM NM NM NM MW-10 06/08/21 98.02 NM NM NM NM NM MW-10 07/15/21 98.02 NM NM NM NM NM MW-10 12/20/21 98.02 NM NM NM NM NM MW-10 03/30/22 98.02 NM NM NM NM NM MW-10 10/04/22 98.02 NM NM NM NM NM MW-11 Well did not exist MW-11 08/29/11 93.21 ----9.84 --83.37 MW-11 04/27/12 93.21 ----9.29 --83.92 MW-11 08/16/12 93.21 ----9.52 --83.69 MW-11 02/13/13 93.21 ----9.39 --83.82 MW-11 09/05/13 93.21 ----9.62 --83.59 MW-11 05/01/14 93.21 ----9.42 --83.79 MW-11 09/23/14 93.21 ----9.72 --83.49 MW-11 10/28/15 93.21 ----8.95 --84.26 MW-11 08/03/16 93.21 ----9.62 --83.59 MW-11 12/21/17 93.21 ----9.20 --84.01 MW-11 06/27/18 93.21 ----9.20 --84.01 MW-11 03/25/19 93.21 ----9.43 --83.78 MW-11 11/21/19 93.21 ----9.66 --83.55 MW-11 06/18/20 93.21 ----9.17 --84.04 MW-11 11/18/20 93.21 ----9.24 --83.97 MW-11 06/08/21 93.21 ----9.74 --83.47 MW-11 07/15/21 93.21 NM NM NM NM NM MW-11 12/20/21 93.21 ----9.79 --83.42 MW-11 03/30/22 93.21 ----9.49 --83.72 MW-11 10/04/22 93.21 NM NM NM NM NM MW-12 Well did not exist MW-12 08/29/11 94.31 ----10.17 --84.14 MW-12 04/27/12 94.31 ----9.74 --84.57 MW-12 08/16/12 94.31 ----10.12 --84.19 MW-12 02/13/13 94.31 ----9.88 --84.43 MW-12 09/05/13 94.31 ----10.14 --84.17 MW-12 05/01/14 94.31 ----9.94 --84.37 MW-12 09/23/14 94.31 ----10.28 --84.03 MW-12 10/28/15 94.31 ----9.69 --84.62 MW-12 08/03/16 94.31 NM NM NM NM NM MW-12 12/21/17 94.31 NM NM NM NM NM MW-12 06/27/18 94.31 NM NM NM NM NM MW-12 03/25/19 94.31 NM NM NM NM NM MW-12 11/21/19 94.31 NM NM NM NM NM MW-12 06/18/20 94.31 NM NM NM NM NM MW-12 11/18/20 94.31 NM NM NM NM NM MW-12 06/08/21 94.31 NM NM NM NM NM MW-12 07/15/21 94.31 NM NM NM NM NM MW-12 12/20/21 94.31 NM NM NM NM NM MW-12 03/30/22 94.31 NM NM NM NM NM MW-12 10/04/22 94.31 ----10.31 --84.00 WELL NUMBER DATE TOC (ft)DTLNAPL (ft)APPARENT LNAPL THICKNESS (ft)DTW (ft), BTOC CORRECTED DTW (ft)BGS (ft) MW-13 Well did not exist MW-13 08/29/11 95.18 ----9.88 --85.30 MW-13 04/27/12 95.18 ----10.02 --85.16 MW-13 08/16/12 95.18 ----10.08 --85.10 MW-13 02/14/13 95.18 ----10.04 --85.14 MW-13 09/05/13 95.18 ----10.68 --84.50 MW-13 05/01/14 95.18 ----10.58 --84.60 MW-13 09/23/14 95.18 ----10.69 --84.49 MW-13 10/28/15 95.18 ----10.69 --84.49 MW-13 08/03/16 95.18 NM NM NM NM NM MW-13 12/21/17 95.18 NM NM NM NM NM MW-13 06/27/18 95.18 NM NM NM NM NM MW-13 03/25/19 95.18 NM NM NM NM NM MW-13 11/21/19 95.18 NM NM NM NM NM MW-13 06/18/20 95.18 NM NM NM NM NM MW-13 11/18/20 95.18 NM NM NM NM NM MW-13 06/08/21 95.18 NM NM NM NM NM MW-13 07/15/21 95.18 NM NM NM NM NM MW-13 12/20/21 95.18 NM NM NM NM NM MW-13 03/30/22 95.18 NM NM NM NM NM MW-13 10/04/22 95.18 ----10.61 --84.57 MW-14 Well did not exist MW-14 08/29/11 95.92 ----8.90 --87.02 MW-14 04/27/12 95.92 ----8.46 --87.46 MW-14 08/16/12 95.92 ----8.83 --87.09 MW-14 02/14/13 95.92 ----8.29 --87.63 MW-14 09/05/13 95.92 ----8.38 --87.54 MW-14 05/01/14 95.92 ----8.18 --87.74 MW-14 09/23/14 95.92 ----8.41 --87.51 MW-14 10/28/15 95.92 ----8.33 --87.59 MW-14 08/03/16 95.92 NM NM NM NM NM MW-14 12/21/17 95.92 NM NM NM NM NM MW-14 06/27/18 95.92 NM NM NM NM NM MW-14 03/25/19 95.92 NM NM NM NM NM MW-14 11/21/19 95.92 NM NM NM NM NM MW-14 06/18/20 95.92 NM NM NM NM NM MW-14 11/18/20 95.92 NM NM NM NM NM MW-14 06/08/21 95.92 NM NM NM NM NM MW-14 07/15/21 95.92 NM NM NM NM NM MW-14 12/20/21 95.92 NM NM NM NM NM MW-14 03/30/22 95.92 NM NM NM NM NM MW-14 03/30/22 95.92 ----8.32 --87.60 MW-14 10/04/22 96.92 ----8.32 --88.60 MW-15 Well did not exist MW-15 08/03/16 92.12 ----8.35 --83.77 MW-15 12/21/17 92.12 ----8.04 --84.08 MW-15 06/27/18 92.12 ----8.02 --84.10 MW-15 03/25/19 92.12 ----8.15 --83.97 MW-15 11/21/19 92.12 ----8.39 --83.73 MW-15 06/18/20 92.12 ----7.97 --84.15 MW-15 11/18/20 92.12 ----8.02 --84.10 MW-15 06/08/21 92.12 ----8.46 --83.66 MW-15 07/15/21 92.12 NM NM NM NM NM MW-15 12/20/21 92.12 ----8.50 --83.62 MW-15 03/30/22 92.12 ----8.19 --83.93 MW-15 10/04/22 92.12 NM NM NM NM NM MW-16 Well did not exist MW-16 08/03/16 92.02 ----7.64 --84.38 MW-16 12/21/17 92.02 ----8.01 --84.01 MW-16 06/27/18 92.02 ----7.99 --84.03 MW-16 03/25/19 92.02 ----8.17 --83.85 MW-16 11/21/19 92.02 ----8.38 --83.64 MW-16 06/18/20 92.02 ----7.97 --84.05 MW-16 11/18/20 92.02 ----8.02 --84.00 MW-16 06/08/21 92.02 ----8.42 --83.60 MW-16 07/15/21 92.02 NM NM NM NM NM MW-16 12/20/21 92.02 ----8.49 --83.53 MW-16 03/30/22 92.02 ----8.20 --83.82 MW-16 10/04/22 92.02 ----8.47 --83.55 Notes: Shaded cells indicate that the water level has been corrected for the presence of LNAPL BTOC - Below Top of Casing (TOC) DTLNAPL - Depth to LNAPL (in feet) DTW - Depth to Water (in feet) BGS - Static Water Elevation (in feet) NM - Not Measured 5,000 84,500 260,000 85,500 70,000 20,000 MW-1 09/21/06 10,100 910 12,800 4,860 NA 2,070 NA 35,000 8,700 2,000 NA MW-1 06/02/11 1,540 2,480 9,710 11,610 ND NDa 676 26,000 33,300 11,800 0.8 J MW-1 08/29/11 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-1 04/27/12 794 1,900 7,300 10,700 ND NDa NA NA NA NA NA MW-1 08/16/12 536 1,510 2,580 5,550 133 a NA NA NA NA NA MW-1 02/13/13 400 2,400 2,700 9,600 ND 74 J 650 NA NA NA NA MW-1 09/05/13 110 1,100 750 4,100 ND ND 480 J NA NA NA NA MW-1 05/02/14 110 1,100 590 3,700 ND ND NA NA NA NA NA MW-1 09/23/14 46 880 310 2,750 ND ND 270 NA NA NA NA MW-1 10/28/15 22.2 670 107 2,043 ND ND 329 NA NA NA NA MW-1 08/03/16 51.4 633 107 1,877 7.07 J ND 252 NA NA NA NA MW-1 12/21/17 54.8 592 47.5 J 1,670 ND ND 204 J NA NA NA NA MW-1 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-1 03/25/19 182 V3 503 ND ND 40.7 V3 23.9 V3 114 NA NA NA NA MW-1 11/21/19 370 570 1.39 42.20 34.4 7.48 17.7 NA NA NA NA MW-1 06/18/20 200 371 23.8 J 274 17.8 J ND 26.6 J NA NA NA NA MW-1 11/18/20 375 381 664 1,203 74.7 9.52 J 143 NA NA NA NA MW-1 06/08/21 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-1 07/15/21 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-1 12/20/21 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-1 03/30/22 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-1 10/04/22 207 585 275 3,560 39.1 ND 563 NS NS NS NS MW-2 06/02/11 3,200 1,150 6,080 3,960 ND NDa 240 17,200 12,400 a 0.7 J MW-2 08/29/11 1,450 822 820 1,006 74 J 125 J NA NA NA NA NA MW-2 04/27/12 1,400 1,730 1,340 3,322 ND NDa NA NA NA NA NA MW-2 08/16/12 131 141 ND ND ND 22.8 NA NA NA NA NA MW-2 02/13/13 78 37 3.0 2.2 J 0.46 J 14 12 NA NA NA NA MW-2 09/05/13 3.9 1.0 ND ND ND 4.5J ND NA NA NA NA MW-2 05/02/14 2.0 4.9 ND ND ND 12 NA NA NA NA NA MW-2 09/23/14 0.16 J 0.37 J ND ND ND 6.4 ND NA NA NA NA MW-2 10/28/15 ND 1.15 ND 4.48 J ND 3.62 ND NA NA NA NA MW-2 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-2 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-2 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-2 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-2 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-2 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-2 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-2 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-2 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-2 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-2 03/30/22 ND ND ND ND 0.504 J 2.30 ND NA NA NA NA MW-2 10/04/22 ND ND ND ND 0.70 2.50 ND NS NS NS NS MW-3 06/02/11 50.9 25.9 103 122.5 ND ND 8.34 154 ND 191 1.3 J MW-3 08/29/11 155 68.6 129 376.2 23.4 ND NA NA NA NA NA MW-3 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-3 08/16/12 2.56 ND 0.840 J 3.92 J ND ND NA NA NA NA NA MW-3 02/13/13 ND ND ND ND ND ND ND NA NA NA NA MW-3 09/05/13 1.1 1.2 1.8 2.5 J ND ND ND NA NA NA NA MW-3 05/01/14 ND ND ND ND ND ND NA NA NA NA NA MW-3 09/23/14 4.4 5.4 2.6 9.8 ND ND 1.4 NA NA NA NA MW-3 10/28/15 ND ND ND ND ND ND ND NA NA NA NA MW-3 08/03/16 9.12 8.50 4.37 J 21.5 ND ND 7.42 NA NA NA NA MW-3 12/21/17 ND ND ND ND ND ND ND NA NA NA NA MW-3 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-3 03/25/19 ND ND ND ND ND ND 1.76 J NA NA NA NA MW-3 11/21/19 ND ND ND ND ND ND ND NA NA NA NA MW-3 06/18/20 ND ND ND ND ND ND ND NA NA NA NA MW-3 11/18/20 ND ND ND ND ND ND ND NA NA NA NA MW-3 06/08/21 4.29 1.70 1.55 5.14 5.28 0.844 J 3.13 NA NA NA NA MW-3 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-3 12/20/21 37.2 3.20 1.11 1.11 55.4 8.02 2.45 J NA NA NA NA MW-3 03/30/22 ND ND ND ND ND ND ND NA NA NA NA MW-3 10/04/22 27.4 1.0 2.1 4.1 46.9 3.80 15.40 NS NS NS NS MW-4 06/02/11 ND ND ND ND 0.41 6.95 ND ND ND ND 0.8J MW-4 08/29/11 ND ND ND ND ND 3.11 NA NA NA NA NA MW-4 04/27/12 ND ND ND ND ND 1.56 J NA NA NA NA NA MW-4 08/16/12 ND ND ND ND ND 2.54 NA NA NA NA NA MW-4 02/13/13 ND ND ND ND ND 1.1 J ND NA NA NA NA MW-4 09/05/13 ND ND ND ND ND 3.6 J ND NA NA NA NA MW-4 05/01/14 ND ND ND ND ND 1.5*NA NA NA NA NA MW-4 09/23/14 ND ND ND ND 0.26 J 1.8 NA NA NA NA NA MW-4 10/28/15 ND ND ND ND ND 0.927 J ND NA NA NA NA MW-4 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-4 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-4 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-4 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-4 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-4 6/18/2020 NS NS NS NS NS NS NS NS NS NS NS MW-4 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-4 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-4 07/15/21 NS NS NS NS NS NS NS NS NS NS NS C9-C12Aliphatics (ug/l) Benzene (ug/l) Ethylbenzene (ug/l) C9-C10Aromatics (ug/l) Lead (ug/l)Diisopropylether (DIPE) (ug/l) MTBE (ug/l)Naphthalene (ug/l) C5-C8Aliphatics (ug/l) Toluene (ug/l) TotalXylenes (ug/l) Well Number Sample Date TABLE 5.1 SUMMARY OF HISTORICAL GROUNDWATER MONITORING RESULTS FOR SELECTED COMPOUNDS SPEEDWAY 7972 LENOIR, NORTH CAROLINAINCIDENT NO.: 28414GCL (ug/l) 5,000 84,500 260,000 85,500 70,000 20,000 C9-C12 Aliphatics (ug/l) Benzene (ug/l) Ethylbenzene (ug/l) C9-C10 Aromatics (ug/l) Lead (ug/l)Diisopropyl ether (DIPE) (ug/l) MTBE (ug/l)Naphthalene (ug/l) C5-C8 Aliphatics (ug/l) Toluene (ug/l) Total Xylenes (ug/l) Well Number Sample Date TABLE 5.1 SUMMARY OF HISTORICAL GROUNDWATER MONITORING RESULTS FOR SELECTED COMPOUNDSSPEEDWAY 7972 LENOIR, NORTH CAROLINA INCIDENT NO.: 28414 GCL (ug/l) MW-4 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-4 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-4 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-5 06/02/11 ND ND ND ND ND 1.62 ND ND ND ND 0.7 J MW-5 08/29/11 ND ND ND ND ND 1.48 J NA NA NA NA NA MW-5 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-5 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-5 02/13/13 ND ND ND ND ND 0.77 J ND NA NA NA NA MW-5 09/05/13 ND ND ND ND ND 0.76 J ND NA NA NA NA MW-5 05/02/14 ND ND ND ND ND ND NA NA NA NA NA MW-5 09/23/14 ND ND ND ND ND 1.0 NA NA NA NA NA MW-5 10/28/15 ND ND ND ND ND 0.659 J ND NA NA NA NA MW-5 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-5 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-5 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-5 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-5 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-5 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-5 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-5 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-5 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-5 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-5 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-5 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-6 06/02/11 ND ND ND ND ND 3.76 ND ND ND ND 1.2 J MW-6 08/29/11 ND ND ND ND ND 2.58 NA NA NA NA NA MW-6 04/27/12 ND ND ND ND ND 2.00 NA NA NA NA NA MW-6 08/16/12 ND ND ND ND ND 2.68 NA NA NA NA NA MW-6 02/13/13 ND ND ND ND ND 3.2 J ND NA NA NA NA MW-6 09/05/13 ND ND ND ND ND 3.3 J ND NA NA NA NA MW-6 05/01/14 ND ND ND ND 0.49 J 6.1*NA NA NA NA NA MW-6 09/23/14 ND ND ND ND 0.52 4.2 NA NA NA NA NA MW-6 10/28/15 ND ND ND ND 0.640 J 3.41 ND NA NA NA NA MW-6 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-6 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-6 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-6 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-6 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-6 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-6 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-6 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-6 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-6 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-6 03/30/22 ND ND ND ND 2.75 3.46 ND NA NA NA NA MW-6 10/04/22 ND ND ND ND 2.3 2.2 ND NS NS NS NS MW-7 06/02/11 ND ND ND ND ND 0.9 ND ND ND ND 24.1 MW-7 08/29/11 ND ND ND ND ND ND NA NA NA NA NA MW-7 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-7 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-7 02/13/13 ND ND ND ND ND 0.81 J ND NA NA NA NA MW-7 09/05/13 ND ND ND ND ND 0.55 J ND NA NA NA NA MW-7 05/01/14 ND ND ND ND ND ND NA NA NA NA NA MW-7 09/23/14 ND ND ND ND ND 0.80 NA NA NA NA NA MW-7 10/28/15 ND ND ND ND ND 0.980 J ND NA NA NA NA MW-7 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-7 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-7 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-7 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-7 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-7 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-7 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-7 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-7 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-7 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-7 03/30/22 ND ND ND ND ND 0.897 J ND NA NA NA NA MW-7 10/04/22 ND ND ND ND ND 0.65 ND NS NS NS NS MW-8 06/02/11 2,300 1,600 12,500 11,220 NDa NDa 600 22,600 27,900 a 1.1 J MW-8 08/29/11 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-8 04/27/12 805 1,340 5,280 10,240 ND NDa NA NA NA NA NA MW-8 08/16/12 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-8 02/13/13 700 1,800 3,500 12,000 ND ND 880 NA NA NA NA MW-8 09/05/13 730 1,300 6,900 11,000 ND ND 900 NA NA NA NA MW-8 05/02/14 480 1,100 3,800 8,800 ND ND NA NA NA NA NA MW-8 09/23/14 300 1,400 3,800 7,600 ND ND 710 NA NA NA NA MW-8 10/28/15 140 1,740 3,580 8,970 ND ND 875 NA NA NA NA MW-8 08/03/16 655 942 2,300 4,920 39.1 J ND 670 NA NA NA NA MW-8 12/21/17 180 1,100 2,000 5,480 ND ND 556 NA NA NA NA MW-8 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-8 03/25/19 418 668 1090 2487 46.9 7.75 386 NA NA NA NA MW-8 11/21/19 392 585 668 2401 107 ND 193 J NA NA NA NA MW-8 06/18/20 696 445 451 1762 127 19.9 J 197 J NA NA NA NA MW-8 11/18/20 535 376 281 1462 249 35.3 J 236 J NA NA NA NA 5,000 84,500 260,000 85,500 70,000 20,000 C9-C12 Aliphatics (ug/l) Benzene (ug/l) Ethylbenzene (ug/l) C9-C10 Aromatics (ug/l) Lead (ug/l)Diisopropyl ether (DIPE) (ug/l) MTBE (ug/l)Naphthalene (ug/l) C5-C8 Aliphatics (ug/l) Toluene (ug/l) Total Xylenes (ug/l) Well Number Sample Date TABLE 5.1 SUMMARY OF HISTORICAL GROUNDWATER MONITORING RESULTS FOR SELECTED COMPOUNDSSPEEDWAY 7972 LENOIR, NORTH CAROLINA INCIDENT NO.: 28414 GCL (ug/l) MW-8 06/08/21 1250 585 440 2287 791 101 255 NA NA NA NA MW-8 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-8 12/20/21 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-8 03/30/22 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-8 10/04/22 597 630 230 3520 401 30.9 919 NS NS NS NS MW-9d 06/02/11 ND ND 0.64 ND ND ND ND ND ND ND 7.6 MW-9d 08/29/11 ND ND ND ND ND ND NA NA NA NA NA MW-9d 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-9d 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-9d 02/14/13 ND ND ND ND ND ND ND NA NA NA NA MW-9d 09/05/13 ND ND ND ND ND ND ND NA NA NA NA MW-9d 05/02/14 ND ND ND ND ND ND NA NA NA NA NA MW-9d 09/23/14 ND ND ND ND ND ND NA NA NA NA NA MW-9d 10/28/15 ND ND ND ND ND ND ND NA NA NA NA MW-9d 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-9d 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-9d 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-9d 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-9d 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-9d 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-9d 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-9d 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-9d 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-9d 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-9d 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-9d 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-10 Well did not exist MW-10 08/30/11 ND ND ND ND ND ND ND ND ND ND 17.2 MW-10 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-10 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-10 02/13/13 ND ND ND ND ND ND ND NA NA NA NA MW-10 09/05/13 ND ND ND ND ND ND ND NA NA NA NA MW-10 05/02/14 ND ND ND ND ND ND NA NA NA NA NA MW-10 09/23/14 ND ND ND ND ND ND NA NA NA NA NA MW-10 10/28/15 ND ND ND ND ND ND ND NA NA NA NA MW-10 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-10 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-10 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-10 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-10 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-10 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-10 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-10 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-10 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-10 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-10 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-10 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-11 Well did not exist MW-11 08/30/11 303 ND ND ND ND 335 ND 853 ND ND 4.0 J MW-11 04/27/12 ND ND ND ND 6.27 17.2 NA NA NA NA NA MW-11 08/16/12 71.7 ND ND ND 7.70 75.6 NA NA NA NA NA MW-11 02/13/13 ND ND ND ND 10 8.9 ND NA NA NA NA MW-11 09/05/13 ND ND ND ND ND ND ND NA NA NA NA MW-11 05/02/14 ND ND ND ND 1.3 ND NA NA NA NA NA MW-11 09/23/14 ND ND ND ND 0.61 0.97 NA NA NA NA NA MW-11 10/28/15 20.3 ND ND ND 0.719 J 4.27 ND NA NA NA NA MW-11 08/03/16 ND ND ND ND 0.398 J 0.486 J ND NA NA NA NA MW-11 12/21/17 ND ND ND ND 3.34 0.824 J ND NA NA NA NA MW-11 06/27/18 ND ND ND ND 0.511 J ND ND NA NA NA NA MW-11 03/25/19 ND ND ND ND ND ND ND NA NA NA NA MW-11 11/21/19 ND ND ND ND 14.2 1.19 ND NA NA NA NA MW-11 06/18/20 ND ND ND ND ND ND ND NA NA NA NA MW-11 11/18/20 ND ND ND ND ND ND ND NA NA NA NA MW-11 06/08/21 ND ND ND ND 6.52 0.570 J ND NA NA NA NA MW-11 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-11 12/20/21 ND ND ND ND 36.1 3.69 ND NA NA NA NA MW-11 03/30/22 ND ND ND ND 138 7.85 ND NA NA NA NA MW-11 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-12 Well did not exist MW-12 08/30/11 ND ND ND ND ND ND ND ND ND ND 0.9J MW-12 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-12 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-12 02/13/13 ND ND ND ND ND ND ND NA NA NA NA MW-12 09/05/13 ND ND ND ND ND ND ND NA NA NA NA MW-12 05/02/14 ND ND ND ND ND ND NA NA NA NA NA MW-12 09/23/14 ND ND ND ND ND ND NA NA NA NA NA MW-12 10/28/15 ND ND ND ND ND ND ND NA NA NA NA MW-12 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-12 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-12 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-12 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-12 11/21/19 NS NS NS NS NS NS NS NS NS NS NS 5,000 84,500 260,000 85,500 70,000 20,000 C9-C12Aliphatics (ug/l) Benzene (ug/l) Ethylbenzene (ug/l) C9-C10Aromatics (ug/l) Lead (ug/l)Diisopropylether (DIPE) (ug/l) MTBE (ug/l)Naphthalene (ug/l) C5-C8Aliphatics (ug/l) Toluene (ug/l) TotalXylenes (ug/l) Well Number Sample Date TABLE 5.1 SUMMARY OF HISTORICAL GROUNDWATER MONITORING RESULTS FOR SELECTED COMPOUNDS SPEEDWAY 7972LENOIR, NORTH CAROLINAINCIDENT NO.: 28414GCL (ug/l) MW-12 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-12 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-12 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-12 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-12 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-12 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-12 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-13 Well did not exist MW-13 08/30/11 ND ND ND ND ND ND ND ND ND ND 8.5 MW-13 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-13 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-13 02/14/13 ND ND ND ND ND ND ND NA NA NA NA MW-13 09/05/13 ND ND ND ND ND ND ND NA NA NA NA MW-13 05/02/14 ND ND ND ND ND ND NA NA NA NA NA MW-13 09/23/14 ND ND ND ND ND ND NA NA NA NA NA MW-13 10/28/15 ND ND ND ND ND ND ND NA NA NA NA MW-13 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-13 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-13 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-13 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-13 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-13 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-13 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-13 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-13 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-13 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-13 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-13 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-14 Well did not exist MW-14 08/30/11 ND ND ND ND ND ND ND ND ND ND 9.1 MW-14 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-14 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-14 02/14/13 ND ND ND ND ND ND ND NA NA NA NA MW-14 09/05/13 ND ND ND ND ND ND ND NA NA NA NA MW-14 05/02/14 ND ND ND ND ND ND NA NA NA NA NA MW-14 09/23/14 ND ND ND ND ND ND NA NA NA NA NA MW-14 10/28/15 ND ND ND ND ND ND ND NA NA NA NA MW-14 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-14 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-14 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-14 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-14 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-14 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-14 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-14 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-14 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-14 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-14 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-14 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-15 Well did not exist MW-15 08/04/16 2.05 14.7 5.09 37.4 2.75 113 4.96 J 636 492 241 8.72 B MW-15 12/21/17 0.985 J 7.20 0.809 J 5.691 J 2.05 45.2 1.64 J NA NA NA NA MW-15 06/27/18 3.64 3.70 ND 4.88 2.10 40.9 1.30 J NA NA NA NA MW-15 03/25/19 128 20 6.67 12.29 1.55 23.8 3.48 J NA NA NA NA MW-15 11/21/19 ND 0.757 J ND ND 7.47 32.4 ND NA NA NA NA MW-15 06/18/20 62.8 10.6 1.12 7.32 4.00 16.1 1.23 J NA NA NA NA MW-15 11/18/20 1.86 3.95 ND 1.07 J 2.42 12.7 1.25 J NA NA NA NA MW-15 06/08/21 72.1 5.57 1.13 1.60 5.56 17.8 1.00 NA NA NA NA MW-15 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-15 12/20/21 0.145 J 2.07 0.39 J 2.36 7.74 17.0 1.21 J NA NA NA NA MW-15 03/30/22 0.390 J ND ND ND 17.40 14.3 ND NA NA NA NA MW-15 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-16 Well did not exist MW-16 08/04/16 218 368 80.4 1,772 1.45 24.6 181 1,380 4,980 1,720 3.50 B J MW-16 12/21/17 73.6 198 22.2 983 1.55 19.7 77.2 NA NA NA NA MW-16 06/27/18 13.4 J 268 ND 1,432 ND ND 154.0 NA NA NA NA MW-16 03/25/19 2.05 98.2 0.643 J 438 ND ND 79.1 NA NA NA NA MW-16 11/21/19 234 36.5 0.766 J 164.5 3.27 14.3 47.4 NA NA NA NA MW-16 06/18/20 1.90 J 13.7 ND 54.8 1.70 J ND 30.7 J NA NA NA NA MW-16 11/18/20 ND 6.98 J ND 25.9 J 2.39 J ND 23.9 J NA NA NA NA MW-16 06/08/21 28.9 7.45 J ND 29.8 J 1.26 J ND 10.3 J NA NA NA NA MW-16 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-16 12/20/21 ND 14.0 ND 44.3 9.91 J 11.7 19.5 J NA NA NA NA MW-16 03/30/22 14.6 11.4 ND 43.9 1.19 J 1.34 J 12.8 J NA NA NA NA MW-16 10/04/22 3.7 0.56 ND 1.4 54.4 8.3 0.83 J NS NS NS NS Notes: ND - Not detected at or above laboratory's practical quantitation limit MTBE - Methyl tertiary-butyl ether V3 - Analytical results biased high due to sample matrix interference. a - detection limit exceeds NCGQS DIPE - diisopropyl ether EPA NWQC - EPA National Water Quality Criteria NA - Not Analyzed for this parameter * C9-C12 Aliphatics (VPH) only. See laboratory report.NS - Not Sampled NCGQS - North Carolina Groundwater Quality Standard ** C9-C10 Aromatics (VPH) only. See laboratory report. NE - Standard not established B - Same analyte is found in associated blank All concentrations reported in ug/L - micrograms per liter LNAPL- Light non-aqueous phase liquid J- Estimated Value Shaded values exceed 10X 2B NCSWQS, 10X EPA NWQC and/or GCL 51 97 11 450 NE 1,500 12 1,400 NE NE 25 Stream #1 Not sampled on prior datesStream #1 04/13/12 13.5 4.99 15.86 ND ND 1.38 ND ND ND NAStream #1 08/16/12 10.5 2.06 2.44 7.46 ND 1.24 0.870 NA NA NA NAStream #1 02/14/13 15 5.2 6.5 ND 1.4 1.500 NA NA NA NAStream #1 09/05/13 0.71 2.3 1.1 7.2 ND ND 0.79J NA NA NA NAStream #1 05/02/14 6.6 5.0 10 16 ND ND ND NA NA NA NAStream #1 09/23/14 0.21 J 0.57 0.50 1.8 J ND ND ND NA NA NA NAStream #1 12/01/15 4.38 5.86 7.86 16.6 ND 1.11 1.45 J NA NA NA NAStream #1 08/03/16 ND ND ND ND ND ND ND NA NA NA NAStream #1 12/21/17 0.350 J 2.31 2.02 5.53 ND ND 1.60 J NA NA NA NAStream #1 06/27/18 0.464 J 2.38 1.61 7.64 ND ND 1.17 J NA NA NA NAStream #1 03/25/19 0.662 J 3.00 2.25 9.12 ND ND 2.67 J NA NA NA NAStream #1 11/21/19 ND ND ND ND ND ND ND NA NA NA NAStream #1 06/18/20 0.347 J 0.639 J 0.450 J 1.14 J 0.177 J ND ND NA NA NA NAStream #1 11/18/20 0.693 J 2.73 1.29 5.63 J 0.524 J 0.234 J 1.20 J NA NA NA NAStream #1 06/08/21 0.339 J 0.720 J ND 0.732 J 0.440 J 0.104 J ND NA NA NA NAStream #1 07/15/21 1.62 1.21 0.377 J 1.46 J 0.703 J 0.219 J ND NA NA NA NAStream #1 12/20/21 ND 0.569 J ND ND 0.272 J 0.143 J ND NA NA NA NAStream #1 03/30/22 1.64 2.23 1.10 3.68 1.39 0.217 J ND NA NA NA NAStream #1 10/04/22 ND ND ND ND ND ND ND NA NA NA NAStream #2 Not sampled on prior datesStream #2 04/13/12 7.23 3.05 7.83 10.9 ND ND 0.970 ND ND ND NAStream #2 08/16/12 5.67 1.15 1.28 4.13 0.190J 1.55 0.530 NA NA NA NAStream #2 02/14/13 7.6 3.4 9.8 5.2 ND 1.2 0.99J NA NA NA NAStream #2 09/05/13 ND 1.1 0.53 3.4 ND ND ND NA NA NA NAStream #2 05/02/14 2.2 1.9 3.5 6.6 ND ND ND NA NA NA NAStream #2 09/23/14 1.4 1.6 11.3 ND ND 0.59 NA NA NA NAStream #2 12/01/15 1.66 1.76 2.74 J 5.96 ND 0.721 J ND NA NA NA NAStream #2 08/03/16 ND ND ND ND ND ND ND NA NA NA NAStream #2 12/21/17 ND 0.852 J 0.931 J 1.959 J ND ND ND NA NA NA NAStream #2 06/27/18 ND 1.32 0.906 J 3.923 J ND ND ND NA NA NA NAStream #2 03/25/19 ND 0.850 J 0.839 J 2.743 J ND ND ND NA NA NA NAStream #2 11/21/19 ND ND ND ND ND ND ND NA NA NA NAStream #2 06/18/20 0.161 J 0.276 J ND 0.523 J ND ND ND NA NA NA NAStream #2 11/18/20 0.455 J 1.56 1.11 3.38 J 0.468 J 0.209 ND NA NA NA NAStream #2 06/08/21 0.137 J 0.248 J ND ND 0.385 J ND ND NA NA NA NAStream #2 07/15/21 0.916 J 0.642 J ND 0.532 J 0.589 J 0.163 J ND NA NA NA NAStream #2 12/20/21 ND 0.268 J ND ND 0.626 J 0.167 J ND NA NA NA NAStream #2 03/30/22 0.724 J 1.11 0.512 J 1.94 J 1.48 0.201 J ND NA NA NA NAStream #2 10/04/22 NS NS NS NS NS NS NS NS NS NS NSStream #3 Not sampled on prior dates Stream #3 04/13/12 NS NS NS NS NS NS NS NS NS NS NS Stream #3 08/16/12 ND ND ND ND ND ND ND NA NA NA NA Stream #3 02/14/13 ND ND ND ND ND ND ND NA NA NA NA Stream #3 09/05/13 ND ND ND ND ND ND ND NA NA NA NA Stream #3 05/02/14 ND 0.15 J ND ND ND ND ND NA NA NA NA Stream #3 09/23/14 ND ND 0.10 J ND ND ND ND NA NA NA NA Stream #3 12/01/15 ND ND ND ND ND ND ND NA NA NA NAStream #3 08/03/16 ND ND ND ND ND ND ND NA NA NA NA Stream #3 12/21/17 ND ND ND ND ND ND ND NA NA NA NA Stream #3 06/27/18 ND ND ND ND ND ND ND NA NA NA NA Stream #3 03/25/19 ND ND ND ND ND ND ND NA NA NA NA Stream #3 11/21/19 ND ND ND ND ND ND ND NA NA NA NA Stream #3 06/18/20 ND ND ND ND ND ND ND NA NA NA NA Stream #3 11/18/20 ND ND ND ND ND ND ND NA NA NA NA Stream #3 06/08/21 ND ND ND ND ND ND ND NA NA NA NA Stream #3 07/15/21 ND ND ND ND ND ND ND NA NA NA NA Stream #3 12/20/21 ND ND ND ND ND ND ND NA NA NA NA Stream #3 03/30/22 ND ND 0.659 J ND 0.332 J ND ND NA NA NA NA Stream #3 10/04/22 ND ND ND ND ND ND ND NA NA NA NA Notes: NA - Not analyzed for this parameter DIPE - diisopropyl ether NE - Standard not established * C9-C12 Aliphatics (VPH) only. See laboratory report. NS - Not sampled ** C9-C10 Aromatics (VPH) only. See laboratory report. All concentrations reported in ug/L - micrograms per liter J- Estimated Value Bold values exceed NC Surface Water Quality Standards (NCSWQS) and EPA National Water Quality Criteria (NWQC) Note: This table summarizes results for selected compounds. Additional compounds may have been detected. Refer to laboratory reports for additional information Ethylbenzene Toluene C5-C8 Aliphatics C9-C10 Aromatics LeadSample Location Sample Date Benzene Naphthalene INCIDENT NO.: 28414 2B NCSWQS or EPA NWQC Diisopropyl ether (DIPE)MTBE TABLE 6 SUMMARY OF HISTORICAL SURFACE WATER SAMPLING RESULTS FOR SELECTED COMPOUNDS SPEEDWAY 7972 LENOIR, NORTH CAROLINA Total Xylenes C9-C12 Aliphatics WELL ID CASING DIAMETER (INCHES) PRODUCT THICKNESS PRE MMPE (FEET) - 10/17/22 PRODUCT THICKNESS POST MMPE (FEET) - 10/21/22 WATER/ PRODUCT REMOVED (GALLONS) LNAPL REMOVED (GALLONS AS LIQUID) LNAPL REMOVED (GALLONS AS VAPOR) MW-1 2 0.00 0.00 MW-8 2 0.00 0.00 33.86 TOTAL GALLONS OF LNAPL REMOVED = 33.86 TABLE 7 SUMMARY OF MMPE EVENT OCTOBER 17 THROUGH OCTOBER 21, 2022 SPEEDWAY 7972 LENOIR, NORTH CAROLINA INCIDENT NO.: 28414 4,710 0 WELL LOCATIONS RECOVERY METHOD DATE MAXIMUM LNAPL THICKNESS (FT) LIQUID LNAPL REMOVED (GALS.) OFF-GAS EMISSIONS (GALS.) WATER REMOVED (GALS.) OW-1 through OW-4, sewer manholes AFVR 7/7/06 1.5 ft in OW-1 735 Unknown 5,265 OW-2 through OW-4 AFVR 7/12/06 0.20 ft in OW-2 30 49.93 1,460 MW-1 Bailer 5/15/09 3.62 ft in MW-1 4.0 N/A 0.5 MW-1 Bailer 6/25/10 1.12 ft in MW-1 0.75 N/A -- MW-1 Bailer 7/8/10 0.28 ft in MW-1 0.25 N/A 0.75 MW-1 Bailer 7/26/10 1.09 ft in MW-1 0.6 N/A -- MW-1 Bailer 8/9/10 0.06 ft in MW-1 0.03 N/A -- MW-1 Bailer/absorbent socks Oct-Dec 2010 0.02 ft in MW-1, OW-1, and OW-4 0.21 N/A -- MW-1 Bailer/absorbent socks Jan-Feb 2011 No measurable LNAPL detected 0.10 N/A -- MW-1, MW-8 MMPE April 9-13, 2012 0.39 in MW-1 5.0 13.92 3,225 MW-8 MMPE Sept 10-14, 2012 0.06 in MW-8 0.0 6.16 2,822 MW-1, MW-8 MMPE March 18-22, 2013 No measurable LNAPL detected*0.0 0.99 3,652 MW-1 Bailer 6/8/21 **Approx. 4 ft 3.0 N/A 2 MW-1 AFVR 6/14/21 2.15 ft in MW-1 ***N/A 0.14 168 MW-1 Bailer 7/15/21 3.38 ft in MW-1 2.0 N/A 2 MW-1, MW-8 MMPE December 6-10, 2021 3.48 ft in MW-8 12.0 266.88 4,710 MW-1, MW-9 MMPE October 17-21, 2022 No measurable LNAPL detected 0.0 33.86 4,710 792.94 371.88 26,017 Notes: 7/07/06 data reported by STAT (emergency response contractor for the Lenoir Fire Department) *LNAPL globules observed in purge water from well MW-8 **An oil/water interface probe was not on site. LNAPL thickness was estimated based on amount observed in bailer. TOTALS TABLE 8 SUMMARY OF HISTORICAL LNAPL RECOVERY EVENTS SPEEDWAY 7972 LENOIR, NORTH CAROLINA INCIDENT NO.: 28414 Appendix A Groundwater Analytical Report #=CL# October 12, 2022 LIMS USE: FR - BRETT SCHAEFER LIMS OBJECT ID: 92629255 92629255 Project: Pace Project No.: RE: Brett Schaefer AECOM 6000 Fairview Road Suite 200 Charlotte, NC 28210 7972-LENOIR Dear Brett Schaefer: Enclosed are the analytical results for sample(s) received by the laboratory on October 04, 2022. 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, Bonnie Vang bonnie.vang@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 24 #=CP# CERTIFICATIONS Pace Project No.: Project: 92629255 7972-LENOIR 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 24 #=SS# SAMPLE SUMMARY Pace Project No.: Project: 92629255 7972-LENOIR Lab ID Sample ID Matrix Date Collected Date Received 92629255001 MW-1 Water 10/04/22 13:50 10/04/22 17:03 92629255002 MW-2 Water 10/04/22 12:35 10/04/22 17:03 92629255003 MW-3 Water 10/04/22 14:20 10/04/22 17:03 92629255004 MW-6 Water 10/04/22 13:15 10/04/22 17:03 92629255005 MW-7 Water 10/04/22 13:10 10/04/22 17:03 92629255006 MW-8 Water 10/04/22 13:45 10/04/22 17:03 92629255007 MW-16 Water 10/04/22 12:30 10/04/22 17:03 92629255008 STREAM-1 Water 10/04/22 10:45 10/04/22 17:03 92629255009 STREAM-3 Water 10/04/22 10:35 10/04/22 17:03 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 24 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 92629255 7972-LENOIR Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts 92629255001 MW-1 SM 6200B 19 PASI-CSAS 92629255002 MW-2 SM 6200B 19 PASI-CSAS 92629255003 MW-3 SM 6200B 19 PASI-CSAS 92629255004 MW-6 SM 6200B 19 PASI-CSAS 92629255005 MW-7 SM 6200B 19 PASI-CSAS 92629255006 MW-8 SM 6200B 19 PASI-CSAS 92629255007 MW-16 SM 6200B 19 PASI-CSAS 92629255008 STREAM-1 SM 6200B 19 PASI-CSAS 92629255009 STREAM-3 SM 6200B 19 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 24 #=HO# SUMMARY OF DETECTION Pace Project No.: Project: 92629255 7972-LENOIR Parameters AnalyzedResult Lab Sample ID Report Limit QualifiersUnitsMethod Client Sample ID 92629255001 MW-1 Benzene 207 ug/L 10/08/22 21:0610.0SM 6200B Diisopropyl ether 39.1 ug/L 10/08/22 21:0610.0SM 6200B Ethylbenzene 585 ug/L 10/08/22 21:0610.0SM 6200B Naphthalene 563 ug/L 10/08/22 21:0640.0SM 6200B Toluene 275 ug/L 10/08/22 21:06 M110.0SM 6200B Xylene (Total)3560 ug/L 10/08/22 21:0620.0SM 6200B m&p-Xylene 2480 ug/L 10/08/22 21:0620.0SM 6200B o-Xylene 1080 ug/L 10/08/22 21:0610.0SM 6200B 92629255002 MW-2 Diisopropyl ether 0.70 ug/L 10/12/22 02:050.50SM 6200B Methyl-tert-butyl ether 2.5 ug/L 10/12/22 02:050.50SM 6200B 92629255003 MW-3 Benzene 27.4 ug/L 10/12/22 02:230.50SM 6200B tert-Butyl Alcohol 73.0 ug/L 10/12/22 02:2350.0SM 6200B Diisopropyl ether 49.6 ug/L 10/12/22 02:230.50SM 6200B Ethylbenzene 1.0 ug/L 10/12/22 02:230.50SM 6200B Methyl-tert-butyl ether 3.8 ug/L 10/12/22 02:230.50SM 6200B Naphthalene 15.4 ug/L 10/12/22 02:232.0SM 6200B Toluene 2.1 ug/L 10/12/22 02:230.50SM 6200B Xylene (Total)4.1 ug/L 10/12/22 02:231.0SM 6200B m&p-Xylene 1.7 ug/L 10/12/22 02:231.0SM 6200B o-Xylene 2.4 ug/L 10/12/22 02:230.50SM 6200B 92629255004 MW-6 Diisopropyl ether 2.3 ug/L 10/12/22 02:420.50SM 6200B Methyl-tert-butyl ether 2.2 ug/L 10/12/22 02:420.50SM 6200B 92629255005 MW-7 Methyl-tert-butyl ether 0.65 ug/L 10/12/22 03:000.50SM 6200B 92629255006 MW-8 Benzene 597 ug/L 10/12/22 05:0610.0SM 6200B Diisopropyl ether 401 ug/L 10/12/22 05:0610.0SM 6200B Ethylbenzene 630 ug/L 10/12/22 05:0610.0SM 6200B Methyl-tert-butyl ether 30.9 ug/L 10/12/22 05:0610.0SM 6200B Naphthalene 919 ug/L 10/12/22 05:0640.0SM 6200B Toluene 230 ug/L 10/12/22 05:0610.0SM 6200B Xylene (Total)3520 ug/L 10/12/22 05:0620.0SM 6200B m&p-Xylene 2880 ug/L 10/12/22 05:0620.0SM 6200B o-Xylene 643 ug/L 10/12/22 05:0610.0SM 6200B 92629255007 MW-16 Benzene 3.7 ug/L 10/12/22 03:180.50SM 6200B Diisopropyl ether 54.4 ug/L 10/12/22 03:180.50SM 6200B Ethylbenzene 0.56 ug/L 10/12/22 03:180.50SM 6200B Methyl-tert-butyl ether 8.3 ug/L 10/12/22 03:180.50SM 6200B Naphthalene 0.83J ug/L 10/12/22 03:182.0SM 6200B Xylene (Total)1.4 ug/L 10/12/22 03:181.0SM 6200B 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 5 of 24 #=HO# SUMMARY OF DETECTION Pace Project No.: Project: 92629255 7972-LENOIR Parameters AnalyzedResult Lab Sample ID Report Limit QualifiersUnitsMethod Client Sample ID 92629255007 MW-16 m&p-Xylene 1.4 ug/L 10/12/22 03:181.0SM 6200B 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 6 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92629255 7972-LENOIR Sample:MW-1 Lab ID:92629255001 Collected:10/04/22 13:50 Received:10/04/22 17:03 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 10/08/22 21:06 75-85-4200072820 tert-Amylmethyl ether ND ug/L 10/08/22 21:06 994-05-820018520 Benzene 207 ug/L 10/08/22 21:06 71-43-210.0 6.9 20 tert-Butyl Alcohol ND ug/L 10/08/22 21:06 75-65-0100053620 tert-Butyl Formate ND ug/L 10/08/22 21:06 762-75-4100058820 1,2-Dichloroethane ND ug/L 10/08/22 21:06 107-06-210.0 6.4 20 Diisopropyl ether 39.1 ug/L 10/08/22 21:06 108-20-310.0 6.2 20 Ethanol ND ug/L 10/08/22 21:06 64-17-54000144020 Ethylbenzene 585 ug/L 10/08/22 21:06 100-41-410.0 6.1 20 Ethyl-tert-butyl ether ND ug/L 10/08/22 21:06 637-92-320064.8 20 Methyl-tert-butyl ether ND ug/L 10/08/22 21:06 1634-04-410.0 8.4 20 Naphthalene 563 ug/L 10/08/22 21:06 91-20-340.0 12.9 20 Toluene 275 ug/L 10/08/22 21:06 108-88-3 M110.0 9.7 20 Xylene (Total)3560 ug/L 10/08/22 21:06 1330-20-720.0 6.8 20 m&p-Xylene 2480 ug/L 10/08/22 21:06 179601-23-120.0 14.2 20 o-Xylene 1080 ug/L 10/08/22 21:06 95-47-610.0 6.8 20 Surrogates 1,2-Dichloroethane-d4 (S)101 %10/08/22 21:06 17060-07-070-130 20 4-Bromofluorobenzene (S)97 %10/08/22 21:06 460-00-470-130 20 Toluene-d8 (S)72 %10/08/22 21:06 2037-26-570-130 20 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 7 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92629255 7972-LENOIR Sample:MW-2 Lab ID:92629255002 Collected:10/04/22 12:35 Received:10/04/22 17:03 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 10/12/22 02:05 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 10/12/22 02:05 994-05-810.0 9.2 1 Benzene ND ug/L 10/12/22 02:05 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 10/12/22 02:05 75-65-050.0 26.8 1 tert-Butyl Formate ND ug/L 10/12/22 02:05 762-75-450.0 29.4 1 1,2-Dichloroethane ND ug/L 10/12/22 02:05 107-06-20.50 0.32 1 Diisopropyl ether 0.70 ug/L 10/12/22 02:05 108-20-30.50 0.31 1 Ethanol ND ug/L 10/12/22 02:05 64-17-520072.2 1 Ethylbenzene ND ug/L 10/12/22 02:05 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 10/12/22 02:05 637-92-310.0 3.2 1 Methyl-tert-butyl ether 2.5 ug/L 10/12/22 02:05 1634-04-40.50 0.42 1 Naphthalene ND ug/L 10/12/22 02:05 91-20-32.0 0.64 1 Toluene ND ug/L 10/12/22 02:05 108-88-30.50 0.48 1 Xylene (Total)ND ug/L 10/12/22 02:05 1330-20-71.0 0.34 1 m&p-Xylene ND ug/L 10/12/22 02:05 179601-23-11.0 0.71 1 o-Xylene ND ug/L 10/12/22 02:05 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)95 %10/12/22 02:05 17060-07-070-130 1 4-Bromofluorobenzene (S)100 %10/12/22 02:05 460-00-470-130 1 Toluene-d8 (S)105 %10/12/22 02:05 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: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 8 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92629255 7972-LENOIR Sample:MW-3 Lab ID:92629255003 Collected:10/04/22 14:20 Received:10/04/22 17:03 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 10/12/22 02:23 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 10/12/22 02:23 994-05-810.0 9.2 1 Benzene 27.4 ug/L 10/12/22 02:23 71-43-20.50 0.34 1 tert-Butyl Alcohol 73.0 ug/L 10/12/22 02:23 75-65-050.0 26.8 1 tert-Butyl Formate ND ug/L 10/12/22 02:23 762-75-450.0 29.4 1 1,2-Dichloroethane ND ug/L 10/12/22 02:23 107-06-20.50 0.32 1 Diisopropyl ether 49.6 ug/L 10/12/22 02:23 108-20-30.50 0.31 1 Ethanol ND ug/L 10/12/22 02:23 64-17-520072.2 1 Ethylbenzene 1.0 ug/L 10/12/22 02:23 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 10/12/22 02:23 637-92-310.0 3.2 1 Methyl-tert-butyl ether 3.8 ug/L 10/12/22 02:23 1634-04-40.50 0.42 1 Naphthalene 15.4 ug/L 10/12/22 02:23 91-20-32.0 0.64 1 Toluene 2.1 ug/L 10/12/22 02:23 108-88-30.50 0.48 1 Xylene (Total)4.1 ug/L 10/12/22 02:23 1330-20-71.0 0.34 1 m&p-Xylene 1.7 ug/L 10/12/22 02:23 179601-23-11.0 0.71 1 o-Xylene 2.4 ug/L 10/12/22 02:23 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)97 %10/12/22 02:23 17060-07-070-130 1 4-Bromofluorobenzene (S)101 %10/12/22 02:23 460-00-470-130 1 Toluene-d8 (S)101 %10/12/22 02:23 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: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 9 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92629255 7972-LENOIR Sample:MW-6 Lab ID:92629255004 Collected:10/04/22 13:15 Received:10/04/22 17:03 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 10/12/22 02:42 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 10/12/22 02:42 994-05-810.0 9.2 1 Benzene ND ug/L 10/12/22 02:42 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 10/12/22 02:42 75-65-050.0 26.8 1 tert-Butyl Formate ND ug/L 10/12/22 02:42 762-75-450.0 29.4 1 1,2-Dichloroethane ND ug/L 10/12/22 02:42 107-06-20.50 0.32 1 Diisopropyl ether 2.3 ug/L 10/12/22 02:42 108-20-30.50 0.31 1 Ethanol ND ug/L 10/12/22 02:42 64-17-520072.2 1 Ethylbenzene ND ug/L 10/12/22 02:42 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 10/12/22 02:42 637-92-310.0 3.2 1 Methyl-tert-butyl ether 2.2 ug/L 10/12/22 02:42 1634-04-40.50 0.42 1 Naphthalene ND ug/L 10/12/22 02:42 91-20-32.0 0.64 1 Toluene ND ug/L 10/12/22 02:42 108-88-30.50 0.48 1 Xylene (Total)ND ug/L 10/12/22 02:42 1330-20-71.0 0.34 1 m&p-Xylene ND ug/L 10/12/22 02:42 179601-23-11.0 0.71 1 o-Xylene ND ug/L 10/12/22 02:42 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)95 %10/12/22 02:42 17060-07-070-130 1 4-Bromofluorobenzene (S)103 %10/12/22 02:42 460-00-470-130 1 Toluene-d8 (S)106 %10/12/22 02:42 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: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 10 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92629255 7972-LENOIR Sample:MW-7 Lab ID:92629255005 Collected:10/04/22 13:10 Received:10/04/22 17:03 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 10/12/22 03:00 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 10/12/22 03:00 994-05-810.0 9.2 1 Benzene ND ug/L 10/12/22 03:00 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 10/12/22 03:00 75-65-050.0 26.8 1 tert-Butyl Formate ND ug/L 10/12/22 03:00 762-75-450.0 29.4 1 1,2-Dichloroethane ND ug/L 10/12/22 03:00 107-06-20.50 0.32 1 Diisopropyl ether ND ug/L 10/12/22 03:00 108-20-30.50 0.31 1 Ethanol ND ug/L 10/12/22 03:00 64-17-520072.2 1 Ethylbenzene ND ug/L 10/12/22 03:00 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 10/12/22 03:00 637-92-310.0 3.2 1 Methyl-tert-butyl ether 0.65 ug/L 10/12/22 03:00 1634-04-40.50 0.42 1 Naphthalene ND ug/L 10/12/22 03:00 91-20-32.0 0.64 1 Toluene ND ug/L 10/12/22 03:00 108-88-30.50 0.48 1 Xylene (Total)ND ug/L 10/12/22 03:00 1330-20-71.0 0.34 1 m&p-Xylene ND ug/L 10/12/22 03:00 179601-23-11.0 0.71 1 o-Xylene ND ug/L 10/12/22 03:00 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)96 %10/12/22 03:00 17060-07-070-130 1 4-Bromofluorobenzene (S)103 %10/12/22 03:00 460-00-470-130 1 Toluene-d8 (S)105 %10/12/22 03:00 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: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 11 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92629255 7972-LENOIR Sample:MW-8 Lab ID:92629255006 Collected:10/04/22 13:45 Received:10/04/22 17:03 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 10/12/22 05:06 75-85-4200072820 tert-Amylmethyl ether ND ug/L 10/12/22 05:06 994-05-820018520 Benzene 597 ug/L 10/12/22 05:06 71-43-210.0 6.9 20 tert-Butyl Alcohol ND ug/L 10/12/22 05:06 75-65-0100053620 tert-Butyl Formate ND ug/L 10/12/22 05:06 762-75-4100058820 1,2-Dichloroethane ND ug/L 10/12/22 05:06 107-06-210.0 6.4 20 Diisopropyl ether 401 ug/L 10/12/22 05:06 108-20-310.0 6.2 20 Ethanol ND ug/L 10/12/22 05:06 64-17-54000144020 Ethylbenzene 630 ug/L 10/12/22 05:06 100-41-410.0 6.1 20 Ethyl-tert-butyl ether ND ug/L 10/12/22 05:06 637-92-320064.8 20 Methyl-tert-butyl ether 30.9 ug/L 10/12/22 05:06 1634-04-410.0 8.4 20 Naphthalene 919 ug/L 10/12/22 05:06 91-20-340.0 12.9 20 Toluene 230 ug/L 10/12/22 05:06 108-88-310.0 9.7 20 Xylene (Total)3520 ug/L 10/12/22 05:06 1330-20-720.0 6.8 20 m&p-Xylene 2880 ug/L 10/12/22 05:06 179601-23-120.0 14.2 20 o-Xylene 643 ug/L 10/12/22 05:06 95-47-610.0 6.8 20 Surrogates 1,2-Dichloroethane-d4 (S)90 %10/12/22 05:06 17060-07-0 D370-130 20 4-Bromofluorobenzene (S)101 %10/12/22 05:06 460-00-470-130 20 Toluene-d8 (S)106 %10/12/22 05:06 2037-26-570-130 20 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 12 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92629255 7972-LENOIR Sample:MW-16 Lab ID:92629255007 Collected:10/04/22 12:30 Received:10/04/22 17:03 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 10/12/22 03:18 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 10/12/22 03:18 994-05-810.0 9.2 1 Benzene 3.7 ug/L 10/12/22 03:18 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 10/12/22 03:18 75-65-050.0 26.8 1 tert-Butyl Formate ND ug/L 10/12/22 03:18 762-75-450.0 29.4 1 1,2-Dichloroethane ND ug/L 10/12/22 03:18 107-06-20.50 0.32 1 Diisopropyl ether 54.4 ug/L 10/12/22 03:18 108-20-30.50 0.31 1 Ethanol ND ug/L 10/12/22 03:18 64-17-520072.2 1 Ethylbenzene 0.56 ug/L 10/12/22 03:18 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 10/12/22 03:18 637-92-310.0 3.2 1 Methyl-tert-butyl ether 8.3 ug/L 10/12/22 03:18 1634-04-40.50 0.42 1 Naphthalene 0.83J ug/L 10/12/22 03:18 91-20-32.0 0.64 1 Toluene ND ug/L 10/12/22 03:18 108-88-30.50 0.48 1 Xylene (Total)1.4 ug/L 10/12/22 03:18 1330-20-71.0 0.34 1 m&p-Xylene 1.4 ug/L 10/12/22 03:18 179601-23-11.0 0.71 1 o-Xylene ND ug/L 10/12/22 03:18 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)96 %10/12/22 03:18 17060-07-070-130 1 4-Bromofluorobenzene (S)102 %10/12/22 03:18 460-00-470-130 1 Toluene-d8 (S)101 %10/12/22 03:18 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: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 13 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92629255 7972-LENOIR Sample:STREAM-1 Lab ID:92629255008 Collected:10/04/22 10:45 Received:10/04/22 17:03 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 10/12/22 03:36 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 10/12/22 03:36 994-05-810.0 9.2 1 Benzene ND ug/L 10/12/22 03:36 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 10/12/22 03:36 75-65-050.0 26.8 1 tert-Butyl Formate ND ug/L 10/12/22 03:36 762-75-450.0 29.4 1 1,2-Dichloroethane ND ug/L 10/12/22 03:36 107-06-20.50 0.32 1 Diisopropyl ether ND ug/L 10/12/22 03:36 108-20-30.50 0.31 1 Ethanol ND ug/L 10/12/22 03:36 64-17-520072.2 1 Ethylbenzene ND ug/L 10/12/22 03:36 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 10/12/22 03:36 637-92-310.0 3.2 1 Methyl-tert-butyl ether ND ug/L 10/12/22 03:36 1634-04-40.50 0.42 1 Naphthalene ND ug/L 10/12/22 03:36 91-20-32.0 0.64 1 Toluene ND ug/L 10/12/22 03:36 108-88-30.50 0.48 1 Xylene (Total)ND ug/L 10/12/22 03:36 1330-20-71.0 0.34 1 m&p-Xylene ND ug/L 10/12/22 03:36 179601-23-11.0 0.71 1 o-Xylene ND ug/L 10/12/22 03:36 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)94 %10/12/22 03:36 17060-07-070-130 1 4-Bromofluorobenzene (S)101 %10/12/22 03:36 460-00-470-130 1 Toluene-d8 (S)105 %10/12/22 03:36 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: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 14 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92629255 7972-LENOIR Sample:STREAM-3 Lab ID:92629255009 Collected:10/04/22 10:35 Received:10/04/22 17:03 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 10/12/22 03:54 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 10/12/22 03:54 994-05-810.0 9.2 1 Benzene ND ug/L 10/12/22 03:54 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 10/12/22 03:54 75-65-050.0 26.8 1 tert-Butyl Formate ND ug/L 10/12/22 03:54 762-75-450.0 29.4 1 1,2-Dichloroethane ND ug/L 10/12/22 03:54 107-06-20.50 0.32 1 Diisopropyl ether ND ug/L 10/12/22 03:54 108-20-30.50 0.31 1 Ethanol ND ug/L 10/12/22 03:54 64-17-520072.2 1 Ethylbenzene ND ug/L 10/12/22 03:54 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 10/12/22 03:54 637-92-310.0 3.2 1 Methyl-tert-butyl ether ND ug/L 10/12/22 03:54 1634-04-40.50 0.42 1 Naphthalene ND ug/L 10/12/22 03:54 91-20-32.0 0.64 1 Toluene ND ug/L 10/12/22 03:54 108-88-30.50 0.48 1 Xylene (Total)ND ug/L 10/12/22 03:54 1330-20-71.0 0.34 1 m&p-Xylene ND ug/L 10/12/22 03:54 179601-23-11.0 0.71 1 o-Xylene ND ug/L 10/12/22 03:54 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)97 %10/12/22 03:54 17060-07-070-130 1 4-Bromofluorobenzene (S)101 %10/12/22 03:54 460-00-470-130 1 Toluene-d8 (S)106 %10/12/22 03:54 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: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 15 of 24 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92629255 7972-LENOIR 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: 728715 SM 6200B SM 6200B 6200B MSV Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples:92629255001 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:3794976 Associated Lab Samples:92629255001 Matrix:Water AnalyzedMDL 1,2-Dichloroethane ug/L ND 0.50 10/08/22 16:550.32 Benzene ug/L ND 0.50 10/08/22 16:550.34 Diisopropyl ether ug/L ND 0.50 10/08/22 16:550.31 Ethanol ug/L ND 200 10/08/22 16:5572.2 Ethyl-tert-butyl ether ug/L ND 10.0 10/08/22 16:553.2 Ethylbenzene ug/L ND 0.50 10/08/22 16:550.30 m&p-Xylene ug/L ND 1.0 10/08/22 16:550.71 Methyl-tert-butyl ether ug/L ND 0.50 10/08/22 16:550.42 Naphthalene ug/L ND 2.0 10/08/22 16:550.64 o-Xylene ug/L ND 0.50 10/08/22 16:550.34 tert-Amyl Alcohol ug/L ND 100 10/08/22 16:5536.4 tert-Amylmethyl ether ug/L ND 10.0 10/08/22 16:559.2 tert-Butyl Alcohol ug/L ND 50.0 10/08/22 16:5526.8 tert-Butyl Formate ug/L ND 50.0 10/08/22 16:5529.4 Toluene ug/L ND 0.50 10/08/22 16:550.48 Xylene (Total)ug/L ND 1.0 10/08/22 16:550.34 1,2-Dichloroethane-d4 (S)%96 70-130 10/08/22 16:55 4-Bromofluorobenzene (S)%125 70-130 10/08/22 16:55 Toluene-d8 (S)%82 70-130 10/08/22 16:55 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 3794977LABORATORY CONTROL SAMPLE: LCSSpike 1,2-Dichloroethane ug/L 49.050 98 60-140 Benzene ug/L 59.950 120 60-140 Diisopropyl ether ug/L 68.350 137 60-140 Ethanol ug/L 24302000 122 60-140 Ethyl-tert-butyl ether ug/L 121100 121 60-140 Ethylbenzene ug/L 52.550 105 60-140 m&p-Xylene ug/L 103100 103 60-140 Methyl-tert-butyl ether ug/L 64.250 128 60-140 Naphthalene ug/L 53.650 107 60-140 o-Xylene ug/L 50.950 102 60-140 tert-Amyl Alcohol ug/L 10101000 101 60-140 tert-Amylmethyl ether ug/L 109100 109 60-140 tert-Butyl Alcohol ug/L 590500 118 60-140 tert-Butyl Formate ug/L 515400 129 60-140 Toluene ug/L 61.350 123 60-140 Xylene (Total)ug/L 154150 103 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: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 16 of 24 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92629255 7972-LENOIR 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. 3794977LABORATORY CONTROL SAMPLE: LCSSpike 1,2-Dichloroethane-d4 (S)%100 70-130 4-Bromofluorobenzene (S)%102 70-130 Toluene-d8 (S)%122 70-130 Parameter Units MS Result % Rec Limits Qual% RecConc. 3794978MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92629255001 3794979 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. 1,2-Dichloroethane ug/L 400 112 60-140121 8 30400ND446484 Benzene ug/L 400 107 60-140117 6 30400207634674 Diisopropyl ether ug/L 400 109 60-140120 9 3040039.1 475 519 Ethanol ug/L 16000 114 60-140129 12 3016000ND1820020600 Ethyl-tert-butyl ether ug/L 800 105 60-140116 10 30800ND838925 Ethylbenzene ug/L 400 100 60-140109 4 304005859831020 m&p-Xylene ug/L 800 93 60-140106 3 30800248032303330 Methyl-tert-butyl ether ug/L 400 112 60-140122 9 30400ND448488 Naphthalene ug/L 400 105 60-140133 11 304005639841090 o-Xylene ug/L 400 104 60-140108 1 30400108015001510 tert-Amyl Alcohol ug/L 8000 102 60-140124 20 308000ND81709940 tert-Amylmethyl ether ug/L 800 112 60-140125 12 30800ND8931000 tert-Butyl Alcohol ug/L 4000 98 60-140114 16 304000ND39104570 tert-Butyl Formate ug/L 3200 104 60-140117 12 303200ND33403750 Toluene ug/L M140013460-140145 5 30400275809853 Xylene (Total)ug/L 1200 97 60-140107 3 301200356047204840 1,2-Dichloroethane-d4 (S)%99 70-13094 4-Bromofluorobenzene (S)%101 70-130101 Toluene-d8 (S)%101 70-130101 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 17 of 24 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92629255 7972-LENOIR 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: 729414 SM 6200B SM 6200B 6200B MSV Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples:92629255002, 92629255003, 92629255004, 92629255005, 92629255006, 92629255007, 92629255008, 92629255009 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:3798473 Associated Lab Samples:92629255002, 92629255003, 92629255004, 92629255005, 92629255006, 92629255007, 92629255008, 92629255009 Matrix:Water AnalyzedMDL 1,2-Dichloroethane ug/L ND 0.50 10/12/22 00:350.32 Benzene ug/L ND 0.50 10/12/22 00:350.34 Diisopropyl ether ug/L ND 0.50 10/12/22 00:350.31 Ethanol ug/L ND 200 10/12/22 00:3572.2 Ethyl-tert-butyl ether ug/L ND 10.0 10/12/22 00:353.2 Ethylbenzene ug/L ND 0.50 10/12/22 00:350.30 m&p-Xylene ug/L ND 1.0 10/12/22 00:350.71 Methyl-tert-butyl ether ug/L ND 0.50 10/12/22 00:350.42 Naphthalene ug/L ND 2.0 10/12/22 00:350.64 o-Xylene ug/L ND 0.50 10/12/22 00:350.34 tert-Amyl Alcohol ug/L ND 100 10/12/22 00:3536.4 tert-Amylmethyl ether ug/L ND 10.0 10/12/22 00:359.2 tert-Butyl Alcohol ug/L ND 50.0 10/12/22 00:3526.8 tert-Butyl Formate ug/L ND 50.0 10/12/22 00:3529.4 Toluene ug/L ND 0.50 10/12/22 00:350.48 Xylene (Total)ug/L ND 1.0 10/12/22 00:350.34 1,2-Dichloroethane-d4 (S)%96 70-130 10/12/22 00:35 4-Bromofluorobenzene (S)%101 70-130 10/12/22 00:35 Toluene-d8 (S)%105 70-130 10/12/22 00:35 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 3798474LABORATORY CONTROL SAMPLE: LCSSpike 1,2-Dichloroethane ug/L 49.250 98 60-140 Benzene ug/L 45.250 90 60-140 Diisopropyl ether ug/L 51.450 103 60-140 Ethanol ug/L 20102000 101 60-140 Ethyl-tert-butyl ether ug/L 101100 101 60-140 Ethylbenzene ug/L 45.850 92 60-140 m&p-Xylene ug/L 92.2100 92 60-140 Methyl-tert-butyl ether ug/L 54.650 109 60-140 Naphthalene ug/L 52.750 105 60-140 o-Xylene ug/L 45.550 91 60-140 tert-Amyl Alcohol ug/L 10301000 103 60-140 tert-Amylmethyl ether ug/L 102100 102 60-140 tert-Butyl Alcohol ug/L 459500 92 60-140 tert-Butyl Formate ug/L 421400 105 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: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 18 of 24 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92629255 7972-LENOIR 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. 3798474LABORATORY CONTROL SAMPLE: LCSSpike Toluene ug/L 43.750 87 60-140 Xylene (Total)ug/L 138150 92 60-140 1,2-Dichloroethane-d4 (S)%97 70-130 4-Bromofluorobenzene (S)%99 70-130 Toluene-d8 (S)%97 70-130 Parameter Units MS Result % Rec Limits Qual% RecConc. 3798475MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92629685003 3798476 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. 1,2-Dichloroethane ug/L 2000 104 60-140116 10 302000ND20902310 Benzene ug/L M1200011760-140176 18 302000387062007400 Diisopropyl ether ug/L 2000 104 60-140119 14 302000ND20802380 Ethanol ug/L 80000 101 60-140111 10 3080000ND8040088500 Ethyl-tert-butyl ether ug/L 4000 98 60-140111 13 304000ND39004430 Ethylbenzene ug/L M1200010660-140162 23 302000234044505590 m&p-Xylene ug/L M1400010560-140185 25 30400069701120014400 Methyl-tert-butyl ether ug/L M1200011760-140146 17 30200092232603850 Naphthalene ug/L M1200010260-140145 26 30200090029403800 o-Xylene ug/L M1200010260-140171 24 302000294049906360 tert-Amyl Alcohol ug/L 40000 104 60-140116 11 3040000ND4150046400 tert-Amylmethyl ether ug/L 4000 104 60-140117 12 304000ND41504660 tert-Butyl Alcohol ug/L 20000 97 60-140109 12 3020000ND1930021900 tert-Butyl Formate ug/L 16000 93 60-140104 11 3016000ND1490016600 Toluene ug/L M120009760-140279 22 302000128001470018300 Xylene (Total)ug/L MS600010460-140180 25 30600099101620020700 1,2-Dichloroethane-d4 (S)%98 70-13098 4-Bromofluorobenzene (S)%100 70-130102 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: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 19 of 24 #=QL# QUALIFIERS Pace Project No.: Project: 92629255 7972-LENOIR 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 Sample was diluted due to the presence of high levels of non-target analytes or other matrix interference.D3 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1 Analyte recovery in the matrix spike was outside QC limits for one or more of the constituent analytes used in the calculated result.MS REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 20 of 24 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 92629255 7972-LENOIR Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 92629255001 728715MW-1 SM 6200B 92629255002 729414MW-2 SM 6200B 92629255003 729414MW-3 SM 6200B 92629255004 729414MW-6 SM 6200B 92629255005 729414MW-7 SM 6200B 92629255006 729414MW-8 SM 6200B 92629255007 729414MW-16 SM 6200B 92629255008 729414STREAM-1 SM 6200B 92629255009 729414STREAM-3 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: 10/12/2022 12:49 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 21 of 24 Page 22 of 24 Page 23 of 24 Page 24 of 24 Appendix B Mobile Multi-Phase Extraction Report www.AdvancedEnvironmental.com "Your Environmental Solutions Partner" ADVANCED ENVIRONMENTAL SERVICES, INC. PO Box 38218 Greensboro, NC 27438 (336) 282-3586 advservices@aol.com www.AdvancedEnvironmental.com INVOICE BILL TO AECOM, Inc. 6000 Fairview Rd. Suite 200 Charlotte, NC 28210 PM – Erik Riegel SHIP TO PO# 149036 PR# 60689928 INVOICE #2107 DATE 11/18/2022 DUE DATE 01/02/2023 TERMS 45 days JOB#; NAME DATES OF SERVICE PO# OR PM Speedway#7972, Lenoir *** 10/17 - 10/21, 2022 ***PO# 149036 TASK DESCRIPTION QTY RATE UNITS AMOUNT 7.420 MMPE system, power supply and mobe 1 2,500.00 week 2,500.00 7.420a Equipment 1 1,500.00 event 1,500.00 7.420c Fluids disposal 4,710 0.35 gallon 1,648.50 7.420d Time for MMPE prep., system setup, supervision, operation and maintenance, breakdown and non- mobe travel 1 2,500.00 week 2,500.00 12.050 MMPE Contractor Travel 1 250.00 visit 250.00 12.030 Per-diem 4 155.00 night 620.00 PO# 149036 PR# 60689928 PM-Erik Regal Thank you for your business! Past due amounts are subject to finance charges of 1.5% per month plus all applicable attorney's collection fees. SUBTOTAL 9,018.50 TAX 0.00 TOTAL 9,018.50 BALANCE DUE $9,018.50 ADVANCED ENVIRONMENTAL SERVICES, INC. “Your Environmental Solutions Partner” MOBILE MULTI-PHASE EXTRACTION REPORT Site Location: Speedway #7972 502 Wilkesboro Blvd. Lenoir, NC Prepared for: AECOM 6000 Fairview Rd. - Suite 200 Charlotte, NC 28210 PM – Erik Riegel November 16, 2022 TABLE OF CONTENTS EVENT SUMMARY MMPE FIELD LOG MASS-REMOVAL CALCULATION FIELD NOTES DISPOSAL MANIFESTS MOBILE MULTI-PHASE EXTRACTION EVENT SUMMARY November 16, 2022 Location: Speedway #7972 502 Wilkesboro Blvd. Lenoir, NC Client: AECOM 6000 Fairview Rd. - Suite 200 Charlotte, NC 28210 Event Dates: October 17 - 21, 2022 Advanced Job # 10 - 2271 Advanced Personnel: Scott Crook and Gary McDaniel MMPE System: MMPE system rated 280 CFM at 25” hg 8’ discharge stack - 6” diameter 6,000 - gallon tanker 110’ piping 1.5” hose to 2 wells Extraction Well: MW-1 and MW-8 Well Initial FP / WL(ft) Final FP / WL(ft) Stinger depth(ft) Run Time / Changed To MW-1 10.90 13.27 11 96.0 hours MW-8 11.42 13.76 12 96.0 hours Description of Event: The MMPE event ran from 13:05 October 17, through 13:05 October 21, 2022. The MMPE system was active for 96.0 hours. During the event vacuum at the recovery pump ranged from 22.0 to 23.0 inches of mercury (hg) and stabilized at approximately 22.0 inches of mercury. Airflow rates ranged from 1,100 to 1,150 feet per minute and stabilized at approximately 1,150 feet per minute. System temperature ranged from 116 – 136 degrees F and humidity ranged from 44 to 64 percent. Field gauged volatile organic compounds (VOC’s) decreased from 7,800 parts per-million (PPM) to 3,600 (PPM) throughout the event. Groundwater / Product Mix Recovered: During the event a total of 4,710 gallons of product/water mix were removed from the site and properly disposed at a certified North Carolina disposal facility. No measurable free product was identified during the event. Total fluids recovered, was measured based on stick readings conducted during and following the event. Based on 96.0 hours of operation and a total of 4,710 gallons recovered during the event, the average groundwater recovery rate was calculated to be approximately 49.06 gallons per hour. Events Results: Based on mass-removal calculations 208.29 pounds or 33.86 gallons of VOC’s were removed as vapor. Following the event, no free product was identified in any well. MMPE FIELD LOG: CLIENT: AECOM JOB NAME: Speedway #7972 LOCATION: Lenoir, NC MMPE EVENT DATES: October 17 - 21, 2022 EXTRACTION POINTS: MW-1 and MW-8 AES JOB NUMBER: 10 - 2271 DATE TIME FLOW (f/m) HUM.(%) TEMP. (F)VOC's(ppm)VAC. (hg")GALLONS STINGER/WL's EXTRACTION POINTS (hg") MW-1 MW-8 Start 13:05 Stinger(ft)11 12 Initial WL's 10.90 11.42 10/17/22 13:30 1,100 64 116 7,800 23.0 11.0 11.0 14:30 1,100 52 128 6,800 23.0 11.0 11.0 18:10 1,100 50 130 6,100 23.0 11.0 11.0 19:10 1,100 50 130 6,100 23.0 11.0 11.0 10/18/22 8:20 1,100 50 130 5,600 23.0 11.0 11.0 10:20 1,100 48 132 5,500 23.0 11.0 11.0 14:10 1,100 44 136 5,300 23.0 11.0 11.0 16:10 1,100 46 134 5,200 23.0 11.0 11.0 10/19/22 9:00 1,150 50 130 4,600 22.0 10.0 10.0 11:00 1,150 46 134 4,600 22.0 10.0 10.0 13:00 1,150 44 136 4,500 22.0 10.0 10.0 19:20 1,150 48 132 4,400 22.0 10.0 10.0 10/20/22 8:10 1,150 50 130 4,000 22.0 10.0 10.0 10:10 1,150 48 132 4,000 22.0 10.0 10.0 14:00 1,150 44 136 3,900 22.0 10.0 10.0 16:00 1,150 46 134 3,900 22.0 10.0 10.0 10/21/22 11:10 1,150 50 130 3,600 22.0 10.0 10.0 12:10 1,150 48 132 3,600 22.0 10.0 10.0 END 13:05 Total fluids: 4,710 gal.Final WL's 13.27 13.76 Total free product:0 gal. DATE TIME STINGER/WL's Air Sparge Vacuum Influence Well Gauging (ft) Start END Final W/L Page 1 of 1 MOBILE MULTI-PHASE EXTRACTION EVENT SITE NAME: Speedway #7972 CLIENT: AECOM INCIDENT NUMBER: AVERAGE DEPTH TO GROUNDWATER: 10 - 12 feet DESCRIBE SOIL IN THE SATURATED ZONE: AVERAGE HYDRAULIC CONDUCTIVITY (if known): EXTRACTION WELLS USED FOR MMPE: MW-1 and MW-8 SPECIFICATIONS OF THE MMPE SYSTEM (cfm @ in Hg): 280 cfm @ 25.0"Hg DRY STANDARD CUBIC FEET PER MINUTE (DSCFM) AIR FLOW CALCULATIONS (Qstd) Date Hours Vacuum Velocity Pipe ID Temp Rel Humid Water Water Qstd(inches of Hg)(ft/min)(in)(°F)(%)Vapor (Wt%)Vapor (Vol%)(flow) 10/17/22 24.00 23.00 1100.00 6 126 54.0 0.049 0.073 180 10/18/22 48.00 23.00 1100.00 6 133 47.0 0.051 0.076 178 10/19/22 72.00 22.00 1150.00 6 133 47.0 0.051 0.076 186 10/20/22 96.00 22.00 1150.00 6 132 48.0 0.051 0.076 186 10/21/22 NOTES Qstd = Flow at DSCFM Vacuum = The level of vacuum being applied should be recorded from the MMPE system (inches of Hg) Velocity = The rate at which air flows is measured at the blower discharge piping (anemometer or pitot tube) Pipe ID = The inside diameter of the blower discharge piping (from the MMPE system) Temperature = The temperature of the air stream exiting the blower discharge piping (dry bulb temp., in deg.°F)Relative humidity = The % relative humidity of the air stream exiting the blower discharge piping Bwsw = water vapor % by weight, i.e., pounds of water per pound of dry air, derived from the Psychrometric chart (temp Vs relative humidity) Bws = water vapor % by volume EQUATIONS Bws = (Bwsw/18 lb-mole H20)/[(1/28.84 lb-mole dry air) + (Bwsw/18 lb-mole H2O)]Qstd = (1-Water Vapor) * velocity * (PI * (diameter/24)2) * (528°R/(Temp + 460)) EMISSION CALCULATIONS Elapsed Time Flow PPMmeasured PPMwet PPMdry K PPMconc Cc:m Cc PMRc PMRg PMR (hour)(DSCFM)(ppm)(#C - gas)(mg/dsm3)(lb/dscf)(lb/hour)(lb/hour)(lb) 24 180 6700 6700 7226 1 7226 3605 0.000225091 2.44 2.82 67.69 48 178 5400 5400 5841 1 5841 2915 0.000181956 1.94 2.25 53.91 72 186 4525 4525 4895 1 4895 2442 0.000152472 1.70 1.97 47.23 96 186 3775 3775 4083 1 4083 2037 0.000127201 1.42 1.64 39.47 Total emissions in pounds 208.29 Total emissions as gallons (pounds / 6.152)33.86 NOTES PPMmeasured = Actual measurements (ppm) taken with a OVA or TVA at the blower discharge piping PPMwet = "wet" concentration PPMdry = "dry" concentration K = Number of carbons in calibration gas: (Methane K = 1, or Propane K = 3, or Hexane K = 6) PPMc= PPMv, Volumetric concentration of VOC emissions as carbon, dry basis at STP Cc:m = mg/dsm3, mass concentration of VOC emissions as carbon Mc = 12.01 mg/mg-mole, molecular weight of carbon K3 = 24.07 dsm3/106 mg-mole, mass to volume conversion factor at STP Cc = lb/dcsf, mass concentration of VOC emissions as carbon, dry basis at STP PMRc = lb/hr, pollutant mass removal rate of VOC's as carbon PMRg = lb/hr, pollutant mass removal rate of of VOC's as gasolinePMR = lb, pollutant mass removal of VOC's as gasoline EQUATIONS PPMwet = PPMmeasuredPPMdry = (PPMwet)/(1-Bws) PPMc = (PPMd)(K) Cc:m = (PPMc)(Mc / K3)Cc = (Cc:m)(62.43x10-9 lb-m3/mg-ft3) PMRc = (Cc)(Qstd)(60 minute/hour) PMRg = (PMRc)(Mg/Mcg) PMR = (PMRg)(#hours) MMPR Field Log Client: /f EC 8 M 1 Site Name: 'Sr e £ b {,,J f\ '-r ::;tf=' 7 ? '7 z Extraction Wells: rf)w -I , rl"\ c.--> -g JobNwnber: ;o -2 z '7 / Event Dates: loj;'l -1 o/z, J 2 2 /0 -;/'7-2 r ~o -,~ -zz I C> -ZC> -2.-z. o~,o 14:Do rviATERi AL MANIFEST EM ERGENCY PHONE NO. (336) 841 -5276 Name J Street Addre.ss • I, DESCRIPTION OF MATERIALS Manifest Document No. Page of POST OFFICE BOX 357 TEL (336) 841-5276 Zebra Job No. HIGH POINT, NC 27261 FAX (336) 841-5509 GENERATOR INFORMATION US EPAID No. Mailing Address Phone No. Contact .. r (.>(.JI:- HM USDOT Proper Shipping Name (Complete All Items for Hazardous Materials) Hazard UN / NA Packing Containers Total Class or Div ID No. Group Qty. Type Quantity a. 1 u ,J \l 4 l \ n . . ' Jn,. -'1¥lla Unit wt.Nol. b. C. ' y ····--ADDITIONAL INFORMATION ERG No. a. b. C. GENERATOR'S CERTIFICATION This is to certify that the above-described materials are properly classified proper condition for transportation according to the applicable regulations none of the materials described above are a hazardous waste as defined b unless specifically identified above. the materials contain less than 1,000 (2 ppm of PCBs as defined by EPA 40 CFR Parts 279 and 76 , • = rinted ame Transporter Zebra Environmental Address Transporter or EPA ID No. Phone Facility Addreu 901 East Springfield Road High Point, NC 27263 NC0991302669 -. . .. Rewards Program ID: You were checked out by: You were checked in by: Total Balance Due: GP-TSC4503 Lpuebl RHulle 0.00 Quality Inn (NC636) Morganton, NC 28655 2400 South Sterling Street GM.NC636@choicehotels.com (828) 437-0171 Account: Date: Room: Arrival Date: Departure Date: Check In Time: Check Out Time:10/21/22 1:22 PM 10/17/22 3:30 PM 10/21/22 10/17/22 137 LSTATE 11/16/22 839191526 306 BRADLEY ST BURLINGTON GREENSBORO, NC 27410 CROOK, TIMOTHY Post Date Description Comment Amount 10/17/22 Room Charge #137 CROOK, TIMOTHY 78.90 10/17/22 State Tax 5.33 10/17/22 City / County Tax 2.37 10/17/22 BURKE COUNTY Occupancy Tax 2.37 10/18/22 Room Charge #137 CROOK, TIMOTHY 78.90 10/18/22 State Tax 5.33 10/18/22 City / County Tax 2.37 10/18/22 BURKE COUNTY Occupancy Tax 2.37 10/19/22 Room Charge #137 CROOK, TIMOTHY 78.90 10/19/22 State Tax 5.33 10/19/22 City / County Tax 2.37 10/19/22 BURKE COUNTY Occupancy Tax 2.37 10/20/22 Room Charge #137 CROOK, TIMOTHY 78.90 10/20/22 State Tax 5.33 10/20/22 City / County Tax 2.37 10/20/22 BURKE COUNTY Occupancy Tax 2.37 10/21/22 Visa Payment (355.88) XXXXXXXXXXXX9650 Folio Summary 10/17/22 - 10/21/22 Room Charge 315.60 State Tax 21.32 City / County Tax 9.48 BURKE COUNTY Occupancy Tax 9.48 Visa Payment (355.88) Balance Due: 0.00 AECOM 6000 Fairview Road, Suite 200 Charlotte, North Carolina 28210 Phone: (704) 522-0330 aecom.com July 28, 2023 Mr. Dan Murphy AECOM Project #: 60689928 North Carolina Department of Environmental Quality Division of Waste Management Ashville Regional Office 2090 U.S. Highway 70 Swannanoa, NC 28778 Subject:Groundwater Monitoring Report Speedway Store # 7972 502 Wilkesboro Blvd. Lenoir, Caldwell County, North Carolina UST Incident # 28414 Risk Classification: Intermediate Dear Mr. Murphy, On behalf of Speedway, LLC (Speedway), AECOM Technical Services of North Carolina, Inc. (AECOM) is pleased to provide one electronic copy of the Groundwater Monitoring Report for the Speedway Store No. 7972, located at 502 Wilkesboro Blvd., Lenoir, Caldwell County, North Carolina. This report summarizes the groundwater, and surface water sampling activities that occurred June 1, 2023. If there are any questions or concerns regarding this report, please contact Brett G. Schaefer at (704) 499- 6991. Yours sincerely, Brett G. Schaefer, PE Marie Treiber Project Manager Regional Senior Project Manager Brett.Schaefer@aecom.com Marie.Trieber@aecom.com Speedway, LLC 500 Speedway Drive Enon, Ohio 45323 Phone: (937) 864-3000 Groundwater Monitoring Report Speedway Store No. 7972 502 Wilkesboro Boulevard Southeast Lenoir, Caldwell County, North Carolina Incident No. 28414 Project No.60689928 July 28, 2023 AECOM ii Speedway 7972 Lenoir, NCGroundwater Monitoring Report July 2023 Quality Information Prepared by Reviewed by Erik Riegel Environmental Scientist Erik.Riegel@aecom.com Brett G. Schaefer, PE Project Manager Brett.Schaefer@aecom.com Reviewed by Marie Treiber Regional Senior Project Manager Marie.Treiber@aecom.com Prepared for: Speedway, LLC 500 Speedway Drive Enon, Ohio 45323 Phone: (937) 864-3000 Prepared by: AECOM Technical Services of North Carolina, Inc. 6000 Fairview Road, Suite 200 Charlotte, North Carolina 28210 Phone: (704) 522-0330 aecom.com Copyright © 2023 by AECOM All rights reserved. No part of this copyrighted work may be reproduced, distributed, or transmitted in any form or by any means without the prior written permission of AECOM. AECOM iii Speedway 7972 Lenoir, NCGroundwater Monitoring Report July 2023 Professional Certification Page I, Brett G. Schaefer, a Licensed Engineer for AECOM Technical Services of North Carolina, Inc., do certify that the information contained in this report is correct and accurate to the best of my knowledge. _________________________________ Brett G. Schaefer, PE AECOM Technical Services of North Carolina, Inc. AECOM Technical Services of North Carolina, Inc. is licensed to practice engineering in North Carolina. The certification number of the company or corporation is F-0458. AECOM iv Speedway 7972 Lenoir, NCGroundwater Monitoring Report July 2023 Table of Contents Executive Summary ............................................................................................................................................. 1-1 1 Introduction ............................................................................................................................................... 1-2 2 Site Background Information...................................................................................................................... 2-3 2.1 Site Identification ............................................................................................................................ 2-3 2.2 Contact Information ........................................................................................................................ 2-3 3 Site History and Characterization ............................................................................................................... 3-1 3.1 Underground Storage Tank Systems ............................................................................................... 3-1 3.2 Aboveground Storage Tank Systems............................................................................................... 3-1 3.3 Historical Releases ......................................................................................................................... 3-1 3.4 Site Characteristics ........................................................................................................................ 3-1 3.4.1 Zoning/Receptor Information ...........................................................................................3-23-1 3.4.2 Site Geology and Hydrogeology ......................................................................................3-23-1 4 Receptor Information ................................................................................................................................. 4-1 4.1 Water Supply Wells ........................................................................................................................ 4-1 4.1.1 Private Water Supply Wells .................................................................................................. 4-1 4.1.2 Public Water Systems .......................................................................................................... 4-1 4.2 Surface Water ................................................................................................................................ 4-1 4.3 Wellhead Protection Areas .............................................................................................................. 4-1 5 Groundwater Investigation ......................................................................................................................... 5-2 5.1 Groundwater Gauging .................................................................................................................... 5-2 5.2 Groundwater Sampling ................................................................................................................... 5-2 5.3 Groundwater Analytical Results ...................................................................................................... 5-2 6 Surface Water Investigation ....................................................................................................................... 6-3 6.1 Surface Water Sampling ................................................................................................................. 6-3 7 Discussion ................................................................................................................................................ 7-1 8 References ............................................................................................................................................... 8-1 AECOM v Speedway 7972 Lenoir, NCGroundwater Monitoring Report July 2023 Appendices Appendix A.Groundwater Analytical Report Figures Figure 1:Site Location Map Figure 2: Site Plan Figure 3: Groundwater Elevation Map, June 2023 Figure 4:Dissolved Benzene Iso-concentration Map, June 2023 Tables Table 1:Site History – UST Owner/Operator and Other Responsible Party Information Table 2:Site History – UST System and Other Release Information Table 3:Monitoring Well Construction Details Table 4:Summary of Historical Groundwater Elevations Table 5: Summary of Historical Groundwater Monitoring Results for Selected Compounds Table 6:Summary of Historical Surface Water Sampling Results for Selected Compounds AECOM 1-1 Speedway 7972 Lenoir, NCGroundwater Monitoring Report July 2023 Executive Summary As required by the North Carolina Department of Environmental Quality (NCDEQ), AECOM Technical Services of North Carolina, Inc. (AECOM) on behalf of Speedway, LLC (Speedway) has prepared this Groundwater Monitoring Report for Speedway Store No. 7972 (Site), located at 502 Wilkesboro Boulevard Southeast, Lenoir, Caldwell County, North Carolina (Figure 1). The Site formerly operated as a WilcoHess convenience store with gasoline, diesel, and kerosene sales. On October 1, 2014, Speedway acquired the site from Hess Corporation, who had previously acquired the site from WilcoHess, LLC. Currently, the site is operational with convenience store with gasoline, diesel, and kerosene sales. This report includes the groundwater sampling conducted in June 2023. The leak case was initial discovered on July 7, 2006, when a telephone cable worker noticed petroleum odors in a storm sewer drop inlet located near Wilkesboro Boulevard on the south side of the road. The worker contacted the Lenoir Fire Department which mobilized to the site and identified light non-aqueous phase liquid (LNAPL) in an adjoining drop inlet. Further investigation by the fire department identified LNAPL in the observation wells located adjacent to the gasoline and diesel tank beds. Incident No. 28414 was opened Mid-Atlantic Associates, Inc. (Mid-Atlantic) (Speedway’s former consultant) during one of their semi-annual groundwater and surface water sampling visits on June 8, 2021, discovered approximately four feet of LNAPL in monitoring well MW-1. Testing of the underground storage tank (UST) system was subsequently conducted by Crompco, LLC (CROMPCO) on June 10, 2021, and the regular unleaded gasoline line as well as the premium unleaded gasoline spill bucket failed tightness testing. The line failure occurred across the manifold in the former midgrade unleaded piping run. Tideland Construction capped the line at the dispenser and the former midgrade unleaded submersible turbine pump (STP). Crompco re-tested the regular unleaded line after repairs and obtained passing results on June 14, 2021. Although the spill bucket failed the hydrostatic testing, it is not believed to be a significant contributor to the LNAPL found in monitoring well MW-1. On September 24, 2021, NCDEQ assigned Incident Number 48030 based on the results of the UST-61 form and the Soil Sampling Letter (September 20, 2021) The 2006 release (28414) and the 2021 release (48030) have been deemed commingled by NCDEQ. Analysis of the groundwater samples collected on June 1, 2023, indicated benzene and other contaminants of concern continue to impact in the Site monitoring wells MW-1, MW-2, MW-6, MW-7, MW-8, and MW-16 but do not exceed gross contamination levels (GCL). LNAPL was not detected in the monitoring wells sampled during this event. Surface water sampled from historic surface water sampling locations were below detection limits. Water level measurements collected from the site indicate that groundwater flow direction corresponds with historical flow direction which has been generally towards the southwest. The Site is currently in use as a convenience store and retail petroleum dispensing facility and operates two 12,000- gallon regular unleaded gasoline USTs, one 12,000-gallon premium unleaded gasoline UST, one 12,000-gallon diesel fuel UST and one 10,000-gallon kerosene UST. This report documents activities conducted on June 1, 2023, which includes the sampling groundwater monitoring wells without LNAPL and sampling surface water. AECOM, on behalf of Speedway recommends, continuing semi-annual groundwater sampling to monitor plume migration. AECOM 1-2 Speedway 7972 Lenoir, NCGroundwater Monitoring Report July 2023 1 Introduction As required by the North Carolina Department of Environmental Quality (NCDEQ), AECOM Technical Services of North Carolina, Inc. (AECOM) on behalf of Speedway LLC (Speedway) has prepared this Groundwater Monitoring Report for Speedway Store No. 7972 (Site), located at 502 Wilkesboro Boulevard Southeast, Lenoir, Caldwell County, North Carolina (Figure 1 and Figure 2). This report documents activities conducted on June 1, 2023, which includes the sampling groundwater monitoring wells without LNAPL and sampling surface water. AECOM 2-3 Speedway 7972 Lenoir, NCGroundwater Monitoring Report July 2023 2 Site Background Information The following sections provide site background and contact information. 2.1 Site Identification – Date of Incident Report:July 18, 2006 & September 24, 2021 – Facility ID: 0-033119 Incident Number: 28414 & 48030 – Site Rank:Intermediate – Site Name:Speedway Store No. 7972 – Site Street Address:502 Wilkesboro Boulevard Southeast – City/Town: Lenoir Zip Code: 28645 County: Caldwell – Description of Geographical Data Point (e.g., dispenser): Site Property – Location Method (global positioning system, topographical map, other): Google Earth – Latitude (decimal degrees): 35.916295 °, Longitude (decimal degrees): -81.516153 ° 2.2 Contact Information – UST Owner: Speedway LLC. Address: 500 Speedway Drive, Enon, Ohio 45323 Telephone: (937) 864-3000 – UST Operator: Speedway LLC. Address: 500 Speedway Drive, Enon, Ohio 45323 Telephone: (937) 864-3000 – Property Owner: WilcoHess, LLC Address: 539 S. Main Street, Findlay, OH 45840 Telephone: N/A – Property Occupant: Speedway LLC. Address: 500 Speedway Drive, Enon, Ohio 45323 Telephone: (937) 864-3000  Consultant/Contractor: AECOM Address: 6000 Fairview Road, Suite 200 Charlotte, North Carolina 28210 Telephone: (704) 522-0330 – Analytical Laboratory: Pace Analytical State Certification No. 5342 Address: 9800 Kincey Avenue, Suite 100 Huntersville, North Carolina 28078 Telephone: (704) 875-9092 AECOM 3-1 Speedway 7972 Lenoir, NCGroundwater Monitoring Report July 2023 3 Site History and Characterization The following sections provide information on the USTs operated at the Site and follows the general outline established in Guidelines for Assessment and Corrective Action for UST Releases (NCDEQ, 2022) and Guidelines for Site Checks, Tank Closure, and Initial Response and Abatement for UST Releases (NCDEQ, 2021) using the Comprehensive Tables for Corrective Action Guidelines Tables (NCDEQ, 2022). 3.1 Underground Storage Tank Systems UST owner operator and other responsible party information are provided in Table 1. A summary of current and former USTs maintained at the Site is provided below and summarized in Table 2. According to the Caldwell County, North Carolina Geographic Information System (GIS) mapping service, the current property owner of the subject site is listed as WilcoHess, LLC. On October 1, 2014, Speedway, LLC acquired the site from Hess Corporation, who had previously acquired the site from WilcoHess, LLC. Speedway remains the responsible party of the USTs. 3.2 Aboveground Storage Tank Systems No aboveground storage tank systems (ASTs) are currently present on site. Based on available information, no ASTs have historically been present at the Site. 3.3 Historical Releases On July 7, 2006, a telephone cable worker noticed petroleum odors in a storm sewer drop inlet located near Wilkesboro Boulevard on the south side of the road. The worker contacted the Lenoir Fire Department which mobilized to the site and identified free product in an adjoining drop inlet. Further investigation by the fire department identified LNAPL in the observation wells located adjacent to the gasoline and diesel tank beds. A 24-hour Release and UST Leak Reporting Form was submitted to the North Carolina Division of Environment and Natural Resources (NCDENR), Division of Waste Management (DWM), UST Section, Asheville Regional Office (ARO) on July 18, 2006, and the site was assigned incident number 28414. Mid-Atlantic Associates, Inc. (Mid-Atlantic) (Speedway’s former consultant) during one of their semi-annual groundwater and surface water sampling visits on June 8, 2021, discovered approximately four feet of LNAPL in monitoring well MW-1. Testing of the underground storage tank (UST) system was subsequently conducted by Crompco, LLC (CROMPCO) on June 10, 2021, and the regular unleaded gasoline line as well as the premium unleaded gasoline spill bucket failed tightness testing. The line failure occurred across the manifold in the former midgrade unleaded piping run. Tideland Construction capped the line at the dispenser and the former midgrade unleaded submersible turbine pump (STP). Crompco re-tested the regular unleaded line after repairs and obtained passing results on June 14, 2021. Although the spill bucket failed the hydrostatic testing, it is not believed to be a significant contributor to the LNAPL found in monitoring well MW-1. On September 24, 2021, NCDEQ assigned Incident Number 48030 based on the results of the UST-61 form and the Soil Sampling Letter (September 20, 2021) The 2006 release (28414) and the 2021 release (48030) have been deemed commingled by NCDEQ. 3.4 Site Characteristics The location of the Site is shown on a portion of the United States Geological Survey Lenoir, NC (2022) and Kings Creek, NC (2022) digital raster graphic file (Figure 1). The layout of the Site is found on Figure 2. The Site is currently operational. The Site is occupied by a Speedway convenience store with Speedway gasoline operations. The site is located at 502 Wilkesboro Boulevard Southeast, Lenoir, North Carolina and is accessed from Wilkesboro Boulevard, located North of the site and Hibriten Drive, located west of the site. Various commercial and residential properties surround the Site. AECOM 3-2 Speedway 7972 Lenoir, NCGroundwater Monitoring Report July 2023 3.4.1 Zoning/Receptor Information The Site and adjoining properties are currently zoned Residential and business (Caldwell GIS Viewer). Receptor information for the site was documented in Mid-Atlantic’s November 13, 2006, Phase I LSA Report. A receptor survey update was not completed for this phase of work. For additional details, please refer to the LSA report. 3.4.2 Site Geology and Hydrogeology Site geology was evaluated based on historic consultant Mid-Atlantic Associates, Inc. (Mid-Atlantic) and current investigations. The site is located within the intrusive rocks of the Inner Piedmont physiographic province. The site appears to be located on top of metamorphic rocks described as “Migmatitic Granitic Gneiss - foliated to massive, granitic to quartz dioritic; biotite gneiss and amphibolite common.”. In general, the soils encountered at the Site consist of sandy and clayey silt to a depth of 11.5 feet below ground surface (bgs), where saprolite was encountered. Geoprobe refusal was encountered at 14.0 feet bgs, but hollow stem augers were advanced to a depth of 20 feet bgs without auger refusal. Groundwater elevation was encountered at approximately 83.70 feet bgs (MW-16) to 93.14 feet bgs (MW-6). Based on the results of the June 2023 gauging event, groundwater flow is to the southwest, which is generally consistent with historical groundwater flow. Historical groundwater elevations are summarized on Table 4, and a groundwater flow map (Figure 3) was constructed based on the June 2023 gauging results. The hydraulic gradient, as measured from monitoring well MW-3 to MW-16, is 0.0348 ft/ft [(90.10-83.70)/183.63]. Hydraulic Gradient =Δ𝑦 Δ𝑥 Δy = Change in groundwater elevation from monitoring well MW-3 to MW-16 Δx = Distance between monitoring well MW-3 and MW-16 AECOM 4-1 Speedway 7972 Lenoir, NCGroundwater Monitoring Report July 2023 4 Receptor Information 4.1 Water Supply Wells The previous consultant (Mid Atlantic) conducted a water supply well survey in 2006 to identify the presence of water supply wells within a 1,500-foot radius from the Site and is documented in Mid-Atlantic’s November 13, 2006, Phase I Limited Site Assessment (LSA) Report. 4.1.1 Private Water Supply Wells No water supply wells are present within 250 feet of the source area of the release. Two wells were identified between 250 and 1,000 feet of the source area, both are not in use. And two wells were identified between 1,000 and 1,500 feet of the source area, both are not in use. Details of water supply wells are provided in the LSA report completed by Mid Atlantic, (November 13, 2003). 4.1.2 Public Water Systems The Site obtains water from the City of Lenoir municipal water-supply system, which draws it water from Lake Rhodhiss off of the Caldwell River. Based on currently available information, the properties surrounding the site receive their municipal water supplies through buried piping that runs beneath the streets and highway easements. 4.2 Surface Water The nearest surface water is Lower Creek located approximately 450 feet southeast of the subject site. A stormwater drainage ditch is located on the southwestern side of Hibriten Drive, approximately 140 feet from the source area of the release. The stormwater ditch drains south into Lower Creek. The topographic quadrangle map does not show this drainage ditch. The Site is classified as intermediate risk due to the presence of this surface water body. 4.3 Wellhead Protection Areas According to the NCDEQ Well Head Protection website, last updated in May 2023, there are no approved wellhead protection plans located in Caldwell County. AECOM 5-2 Speedway 7972 Lenoir, NCGroundwater Monitoring Report July 2023 5 Groundwater Investigation During the current monitoring period, activities included groundwater gauging and sampling. 5.1 Groundwater Gauging Monitoring wells MW-1 through MW-8, MW-9D, MW-12 through MW-14 and MW-16, were gauged for depth to water and depth to LNAPL, if present. Depths to groundwater ranged from 8.32 ft bgs (MW-16) to 12.61 ft bgs (MW-3) in the site monitoring wells. Monitoring wells MW-10, MW-11, and MW-15 were not gauged because they were inaccessible at the time of gauging. None of the wells gauged reported LNAPL. 5.2 Groundwater Sampling Prior to the collection of a groundwater sample for laboratory analysis, the depth to liquid or LNAPL was measured using an electronic oil-water interface probe. If no LNAPL was present, the well was purged of at least three well volumes using a disposable bailer. Depth to water and calculated groundwater elevations for the current and historic gauging events are included on Table 4. 5.3 Groundwater Analytical Results During this monitoring period, select monitoring wells were sampled. Monitoring wells MW-1, MW-2, MW-3, MW-6, MW-7, MW-8, and MW-16 were sampled on June 1, 2023 and analyzed for analysis volatile organic compounds (VOCs) via EPA Method SM 6200B. Monitoring wells MW-10, MW-11, and MW-15 were not sampled because they were inaccessible at the time of sampling. Once the wells had been properly purged, natural attenuation parameter readings were collected using a Yellow Springs Instrument (YSI) meter and groundwater samples were collected from each location using dedicated disposable polyethylene bailers attached to nylon rope. To collect a sample, the bailer was slowly lowered to a depth just beneath the water surface in the well. The bailer was then recovered, and the contents carefully decanted into laboratory supplied sample containers, properly preserved, and delivered to Pace Analytical (Pace), a North Carolina- certified laboratory. Groundwater sampling results indicated petroleum hydrocarbon continued to impact the Site monitoring wells during this reporting period. - Benzene concentrations were not observed above the Gross Contamination Levels (GCL) in site monitoring wells. No other compounds exceeded GCLs. Analytical results are summarized in Table 5. Dissolved benzene Iso-concentration map, June 2023 sampling event are included as Figure 4. Laboratory analytical reports are included in Appendix A. AECOM 6-3 Speedway 7972 Lenoir, NCGroundwater Monitoring Report July 2023 6 Surface Water Investigation During the current monitoring period, activities included surface water sampling. 6.1 Surface Water Sampling During this monitoring period, STREAM-1 and STREAM-3 were sampled on June 1, 2023 and analyzed for analysis VOCs via EPA Method SM 6200B. During this event, STREAM-2 was inaccessible and was not sampled during this sampling event. Surface water sampling results indicated surface water samples were below detection limits during this reporting period. - Benzene concentrations were not observed in surface water samples. - Levels of Diisopropyl Ether (DIPE) was present at Stream #1 (3.4 µg/L) at levels not exceeding 2B Standards. Analytical results are summarized in Table 6. Dissolved benzene Iso-concentration map, June 2023 sampling event are included as Figure 4. Laboratory analytical reports are included in Appendix A. AECOM 8-1 Speedway 7972 Lenoir, NCGroundwater Monitoring Report July 2023 7 Discussion Analysis of the groundwater samples collected on June 1, 2023, indicated benzene and other contaminates of concern continued to impact in the Site monitoring wells MW-1, MW-2, MW-6, MW-7, MW-8, and MW-16, but did not exceed GCL. Analysis of the surface water samples collected June 1, 2023, indicated concentrations of Diisopropyl Ether at surface water sample location Stream# 1 not exceeding 2B Standards and LNAPL was not detected in any monitoring well sampled during the event. Based on the results of the groundwater monitoring report:  LNAPL was not detected in the monitoring wells sampled during this event.  Groundwater sampled from on-site wells did not exhibit petroleum compounds at concentrations exceeding their respective GCLs.  Surface water sampled from historic surface water sampling locations had concentrations of Diisopropyl Ether at surface water sample location Stream# 1 not exceeding 2B Standards.  Water level measurements collected from the site indicated that groundwater flow direction corresponded with historical flow direction which has been generally towards the southwest. AECOM, on behalf of Speedway recommends the following additional actions:  Continue semi-annual groundwater sampling to monitor plume migration. 8 References NCDEQ, 2021. Guidelines for Site Checks, Tank Closure, and Initial Response and Abatement for UST Releases. Change 11, effective May 17, 2021. NCDEQ, 2022. Guidelines for Assessment and Corrective Action for UST Releases. Effective March 7, 2022. Figures 2,0002,000 N SITE LOCATION I. DUMITRU FIGURE 1SITE LOCATION MAP Source: Topo USGS 7.5 Minute Topographic Map Quadrangle: Lenoir, NC Copyright: 2022 National Geographic Society DATE:DRAWN BY:REVIEWED BY:PROJECT NO.:Fil e : C : \ C o n f i d e n t i a l \ A E C O M \ 7 - E l e v e n \ S i t e s F o l d e r s \ N o r t h C a r o l i n a \ 4 4 6 9 7 - 7 9 7 2 L e n o i r \ 4 4 6 9 7 - 7 9 7 2 L e n o i r . d w g L a y o u t : S i t e L o c a t i o n M a p D a t e : 0 9 D e c , 2 0 2 2 X r e f s : 00 SCALE IN FEET: NOTE: ALL MAP FEATURES ARE APPROXIMATE IN SCALE AND LOCATION. DECEMBER 2022 E. RIEGEL Speedway Store #7972 502 Wilkesboro Boulevard Northeast Lenoir, NC 28645 60689928 Speedway LLC. Parking Ca r W a s h Grass La n d s c a p i n g SD-2 SD-4 SD-3 Concrete OW-3 OW-4OW-1 OW-2 MW-1 SD-1 MW-3 MW-4 MW-5 MW-6 MW-9D MW-8MW-7 MW-2 MW-10 MW-11 MW-12 MW-13 MW-14 STREAM #2 STREAM #1 Bridge STREAM #3 MW-15 MW-16 Concrete Landscaping Speedway Store #7972 H i b r i t e n D r i v e S o u t h e a s t W i l k e s b o r o B o u l e v a r d N o r t h e a s t L o w e r C r e e k Canopy &Dispenser Is l a n d s Canopy &Dispenser I s l a n d s Dominos Pizza Dominos Pizza Dumpsters Enclosure Tank Field Outfall Sign SCALE IN FEET: 40 400 DATE:DRAWN BY:REVIEWED BY:PROJECT NO.:C: \ C o n f i d e n t i a l \ A E C O M \ 7 - E l e v e n \ S i t e s F o l d e r s \ N o r t h C a r o l i n a \ 4 4 6 9 7 - 7 9 7 2 L e n o i r \ 4 4 6 9 7 - 7 9 7 2 L e n o i r . d w g , 12 / 9 / 2 0 2 2 6 : 5 6 P M , Du m i t r u , I o n u t , PD F 9 9 5 . p c 3 , Us e r 3 2 7 6 7 , 1'- 0 " = 1 ' - 0 " N I. DUMITRUDECEMBER 2022 E. RIEGEL FIGURE 2 SITE PLAN LEGEND 12,000-Gal. PUL Gasoline 12,000-Gal. RUL Gasoline Product Piping Natural Gas Line Stream Storm Sewer Sanitary Sewer NOTE: ALL MAP FEATURES ARE APPROXIMATE IN SCALE AND LOCATION. Speedway Store #7972 502 Wilkesboro Boulevard Northeast Lenoir, NC 28645 60689928 Speedway LLC. 12,000-Gal. Diesel 10,000-Gal. Kerosene Approximate Property Boundary Fence Product Dispenser Underground Storage Tank Utility Pole / Power Pole Light Post / Traffic Light Storm Drain Overhead Wire Monitoring Well Observation Well Surface Water Sample Deep Monitoring Well Parking Ca r W a s h Grass La n d s c a p i n g SD-2 SD-4 SD-3 Concrete OW-3 OW-4OW-1 OW-2 MW-1 SD-1 MW-3 MW-4 MW-5 MW-6 MW-9D MW-7 MW-10 MW-11 MW-12 MW-13 MW-14 STREAM #2 STREAM #1 Bridge STREAM #3 MW-15 MW-16 Concrete Landscaping Speedway Store #7972 H i b r i t e n D r i v e S o u t h e a s t W i l k e s b o r o B o u l e v a r d N o r t h e a s t L o w e r C r e e k Canopy &Dispenser I s l a n d s Canopy &Dispenser Is l a n d s Dominos Pizza Dominos Pizza Dumpsters Enclosure Tank Field Outfall Sign MW-2 MW-8 SCALE IN FEET: 40 400 DATE:DRAWN BY:REVIEWED BY:PROJECT NO.: Z: \ C h e l m s f o r d - U S C H L 1 \ S e c u r e _ D C S \ P r o j e c t s \ L e g a c y \ 7 1 1 \ N o r t h C a r o l i n a \ 4 4 6 9 7 - 7 9 7 2 L e n o i r \ 6 0 6 8 9 9 2 8 \ S e c t i o n 5 . 0 R e p o r t s \ R e p o r t s \ T A 2 9 \ F i g u r e \ 4 4 6 9 7 - 7 9 7 2 L e n o i r _ 2 0 2 3 0 7 2 5 . d w g , 7/ 2 6 / 2 0 2 3 1 : 2 8 P M , Rie g e l , E r i k , PD F 9 9 5 . p c 3 , Us e r 3 2 7 6 7 , 1'- 0 " = 1 ' - 0 " N E.RIEGELJULY 2023 B.SCHAEFER FIGURE 3GROUNDWATER ELEVATION MAP JUNE 1, 2023 LEGEND 91.60 NM 12,000-Gal. PUL Gasoline 12,000-Gal. RUL Gasoline Product Piping Natural Gas Line Stream Storm Sewer Groundwater Elevation (Ft) Not Measured Groundwater Elevation Contour (Ft) Dashed Where Inferred Approximate Groundwater Flow Direction Sanitary Sewer NOTE: ALL MAP FEATURES ARE APPROXIMATE IN SCALE AND LOCATION. Speedway Store #7972 502 Wilkesboro Boulevard Northeast Lenoir, NC 28645 60689928 Speedway LLC. 12,000-Gal. Diesel 10,000-Gal. Kerosene 92 Approximate Property Boundary Fence Product Dispenser Underground Storage Tank Utility Pole / Power Pole Light Post / Traffic Light Storm Drain Overhead Wire Monitoring Well Observation Well Surface Water Sample Deep Monitoring Well NM 92.97 91.64 90.10 91.86 * 92.67 92.84 91.10 88.60 91.21 84.64 84.13 83.70NM NM 93.14 84 86 88 90 92 84 86 88 90 92 Not Used in Contouring (Deep Well)* Parking Ca r W a s h Grass La n d s c a p i n g SD-2 SD-4 SD-3 Concrete OW-3 OW-4OW-1 OW-2 MW-1 SD-1 MW-3 MW-4 MW-5 MW-6 MW-9D MW-7 MW-10 MW-11 MW-12 MW-13 MW-14 STREAM #2 STREAM #1 Bridge STREAM #3 MW-15 MW-16 Concrete Landscaping Speedway Store #7972 H i b r i t e n D r i v e S o u t h e a s t W i l k e s b o r o B o u l e v a r d N o r t h e a s t L o w e r C r e e k Canopy &Dispenser I s l a n d s Canopy &Dispenser Is l a n d s Dominos Pizza Dominos Pizza Dumpsters Enclosure Tank Field Outfall Sign MW-2 MW-8 12,000-Gal. Diesel 10,000-Gal. Kerosene Approximate Property Boundary Fence Product Dispenser Underground Storage Tank Utility Pole / Power Pole Light Post / Traffic Light Storm Drain Overhead Wire Monitoring Well Observation Well Surface Water Sample Deep Monitoring Well NS NS ND ND* 59.2 14.0 SCALE IN FEET: 40 400 DATE:DRAWN BY:REVIEWED BY:PROJECT NO.: Z: \ C h e l m s f o r d - U S C H L 1 \ S e c u r e _ D C S \ P r o j e c t s \ L e g a c y \ 7 1 1 \ N o r t h C a r o l i n a \ 4 4 6 9 7 - 7 9 7 2 L e n o i r \ 6 0 6 8 9 9 2 8 \ S e c t i o n 5 . 0 R e p o r t s \ R e p o r t s \ T A 2 9 \ F i g u r e \ 4 4 6 9 7 - 7 9 7 2 L e n o i r _ 2 0 2 3 0 7 2 5 . d w g , 7/ 2 6 / 2 0 2 3 1 : 3 1 P M , Rie g e l , E r i k , PD F 9 9 5 . p c 3 , Us e r 3 2 7 6 7 , 1'- 0 " = 1 ' - 0 " N E. RIEGELJULY 2023 B. SCHAEFER FIGURE 4DISSOLVED BENZENE ISO-CONCENTRATION MAP JUNE 1, 2023 LEGEND NS µg/L 12,000-Gal. PUL Gasoline 12,000-Gal. RUL Gasoline Product Piping Natural Gas Line Stream Storm Sewer Not Sampled Micrograms per Liter Sanitary Sewer NOTE: ALL MAP FEATURES ARE APPROXIMATE IN SCALE AND LOCATION. Speedway Store #7972 502 Wilkesboro Boulevard Northeast Lenoir, NC 28645 60689928 Speedway LLC. 207 Benzene Isoconcentration in µg/L Estimated Benzene Isoconcentration Contour in µg/L (Dashed Where Inferred) Not Detected At or Above Laboratory's Practical Quantitation Limit 10 NDND ND NS NS NSND NS NS NS 703 ND ND NS 110 10 0 50 0 Not Used in Contouring (Deep Well)* Tables City Telephone Number Enon TABLE 1 SITE HISTORY - UST OWNER/OPERATOR AND OTHER RESPONSIBLE PARTY INFORMATION SPEEDWAY #7972 LENOIR, NORTH CAROLINA INCIDENT NO.: 28414 UST ID Number 1, 2, 3, 4, 5 Facility ID Number 0-033119 Date of Operation Name of UST Owner Date of OperationSERVCO Speedway 10/1/2014 - Current Address 500 Speedway Drive Speedway 10/1/2014 - Current Incident number 28414 State Zip OH 45323 919-516-8069 Name of UST Operator UST ID Number Current / Last Contents Previous Contents Capacity (gallons) Construction Details Tank Dimensions Associated Piping and Date Installed Current Status 1 Regular Unleaded Gasoline Gasoline 12,000 Double-Walled steel/fiberglass 11' x 28'Unk 11/01/1989 Active 2 Regular Unleaded Gasoline Gasoline 12,000 Double-Walled steel/fiberglass 11' x 28'Unk 11/01/1989 Active 3 Premium Unleaded Gasoline Gasoline 12,000 Double-Walled steel/fiberglass 11' x 28'Unk 11/01/1989 Active 4 Diesel Diesel 12,000 Double-Walled steel/fiberglass 11' x 28'Unk 11/01/1989 Active 5 Kerosene Kerosene 10,000 Double-Walled steel/fiberglass 8' x 27'Unk 11/01/1989 Active TABLE 2 SITE HISTORY - UST SYSTEM AND OTHER RELEASE INFORMATION SPEEDWAY #7972 LENOIR, NORTH CAROLINA INCIDENT NO.: 28414 MW-1 2 9/20/2006 20 5 - 20 MW-2 2 5/31/2011 15 5 - 15 MW-3 2 6/1/2011 18 8 - 18 MW-4 2 5/31/2011 16.5 6.5 - 16.5 MW-5 2 5/31/2011 17 7 - 17 MW-6 2 5/31/2011 18 8 - 18 MW-7 2 6/1/2011 17 7 - 17 MW-8 2 6/1/2011 16 6 - 16 MW-9D 2 6/2/2011 80 40 - 80 MW-10 2 8/30/2011 21 11 - 21 MW-11 2 8/29/2011 16 6 - 16 MW-12 2 8/29/2011 17 7 - 17 MW-13 2 8/30/2011 16 6 - 16 MW-14 2 8/30/2011 16 6 - 16 MW-15 2 8/3/2016 17 7 - 17 MW-16 2 8/3/2016 16 6 - 16 NOTES: BLS - Below land surface TABLE 3 MONITORING WELL CONSTRUCTION DETAILS SPEEDWAY 7972 LENOIR, NORTH CAROLINA INCIDENT NO.: 28414 WELL NUMBER DIAMETER (INCHES) CONSTRUCTION DATE CASING DEPTH (FEET BLS)INTERVAL (FEET WELL NUMBER DATE TOC (ft)DTLNAPL (ft)APPARENT LNAPL THICKNESS (ft)DTW (ft), BTOC (ft)BGS (ft) MW-1 09/21/06 102.18 ----11.05 --91.13 MW-1 06/02/11 102.18 ----11.01 --91.17 MW-1 08/29/11 102.18 11.54 0.56 12.10 11.69 90.49 MW-1 04/27/12 102.18 ----10.74 --91.44 MW-1 08/16/12 102.18 ----11.34 --90.84 MW-1 02/13/13 102.18 ----10.81 --91.37 MW-1 09/05/13 102.18 ----10.79 --91.39 MW-1 05/01/14 102.18 ----10.46 --91.72 MW-1 09/23/14 102.18 ----11.30 --90.88 MW-1 10/28/15 102.18 ----10.70 --91.48 MW-1 08/03/16 102.18 ----11.38 --90.80 MW-1 12/21/17 102.18 ----11.10 --91.08 MW-1 06/27/18 102.18 NM NM NM NM NM MW-1 03/25/19 102.18 ----10.49 --91.69 MW-1 11/21/19 102.18 ----11.37 --90.81 MW-1 06/18/20 102.18 ----9.90 --92.28 MW-1 11/18/20 102.18 ----9.31 --92.87 MW-1 06/08/21 102.18 11.85 4.00 15.85 12.93 89.25 MW-1 07/15/21 102.18 10.00 3.38 13.38 10.91 91.27 MW-1 12/20/21 102.18 11.51 0.14 11.65 11.55 90.63 MW-1 03/04/22 102.18 9.41 3.84 13.25 10.45 91.73 MW-1 03/30/22 102.18 9.45 3.74 13.19 10.46 91.72 MW-1 10/04/22 102.18 ----10.58 --91.60 MW-1 06/01/23 102.18 ----9.34 --92.84 MW-2 Well did not exist MW-2 06/02/11 98.52 ----7.90 --90.62 MW-2 08/29/11 98.52 ----8.45 --90.07 MW-2 04/27/12 98.52 ----7.27 --91.25 MW-2 08/16/12 98.52 ----8.39 --90.13 MW-2 02/13/13 98.52 ----8.09 --90.43 MW-2 09/05/13 98.52 ----8.32 --90.20 MW-2 05/01/14 98.52 ----8.14 --90.38 MW-2 09/23/14 98.52 ----8.51 --90.01 MW-2 10/28/15 98.52 ----8.06 --90.46 MW-2 08/03/16 98.52 NM NM NM NM NM MW-2 12/21/17 98.52 NM NM NM NM NM MW-2 06/27/18 98.52 NM NM NM NM NM MW-2 03/25/19 98.52 NM NM NM NM NM MW-2 11/21/19 98.52 NM NM NM NM NM MW-2 06/18/20 98.52 NM NM NM NM NM MW-2 11/18/20 98.52 NM NM NM NM NM MW-2 06/08/21 98.52 NM NM NM NM NM MW-2 07/15/21 98.52 NM NM NM NM NM MW-2 12/20/21 98.52 NM NM NM NM NM MW-2 03/04/22 98.52 ----8.10 --90.42 MW-2 03/30/22 98.52 ----8.15 --90.37 MW-2 10/04/22 99.52 ----8.51 --91.01 MW-2 06/01/23 99.52 ----8.31 --91.21 MW-3 Well did not exist MW-3 06/02/11 102.71 ----12.87 --89.84 MW-3 08/29/11 102.71 ----13.50 --89.21 MW-3 04/27/12 102.71 ----12.23 --90.48 MW-3 08/16/12 102.71 ----12.30 --90.41 MW-3 02/13/13 102.71 ----12.09 --90.62 MW-3 09/05/13 102.71 ----12.91 --89.80 MW-3 05/01/14 102.71 ----12.28 --90.43 MW-3 09/23/14 102.71 ----13.19 --89.52 MW-3 10/28/15 102.71 ----11.26 --91.45 MW-3 08/03/16 102.71 ----12.85 --89.86 MW-3 12/21/17 102.71 ----11.86 --90.85 MW-3 06/27/18 102.71 NM NM NM NM NM MW-3 03/25/19 102.71 ----12.70 --90.01 MW-3 11/21/19 102.71 ----13.15 --89.56 MW-3 06/18/20 102.71 ----11.38 --91.33 MW-3 11/18/20 102.71 ----12.01 90.70 MW-3 06/08/21 102.71 ----13.19 --89.52 MW-3 07/15/21 102.71 NM NM NM NM NM MW-3 12/20/21 102.71 ----13.22 --89.49 MW-3 03/30/22 102.71 ----12.53 --90.18 MW-3 10/04/22 102.71 ----13.00 --89.71 MW-3 06/01/23 102.71 ----12.61 --90.10 TABLE 4 SUMMARY OF HISTORICAL GROUNDWATER ELEVATIONSSPEEDWAY 7972LENOIR, NORTH CAROLINAINCIDENT NO.: 28414 WELL NUMBER DATE TOC (ft)DTLNAPL (ft)APPARENT LNAPL THICKNESS (ft)DTW (ft), BTOC (ft)BGS (ft) MW-4 Well did not exist MW-4 06/02/11 103.37 ----11.76 --91.61 MW-4 08/29/11 103.37 ----12.47 --90.90 MW-4 04/27/12 103.37 ----11.41 --91.96 MW-4 08/16/12 103.37 ----12.28 --91.09 MW-4 02/13/13 103.37 ----11.37 --92.00 MW-4 09/05/13 103.37 ----11.60 --91.77 MW-4 05/01/14 103.37 ----11.22 --92.15 MW-4 09/23/14 103.37 ----12.06 --91.31 MW-4 10/28/15 103.37 ----11.92 --91.45 MW-4 08/03/16 103.37 NM NM NM NM NM MW-4 12/21/17 103.37 NM NM NM NM NM MW-4 06/27/18 103.37 NM NM NM NM NM MW-4 03/25/19 103.37 NM NM NM NM NM MW-4 11/21/19 103.37 NM NM NM NM NM MW-4 06/18/20 103.37 NM NM NM NM NM MW-4 11/18/20 103.37 NM NM NM NM NM MW-4 06/08/21 103.37 NM NM NM NM NM MW-4 07/15/21 103.37 NM NM NM NM NM MW-4 12/20/21 103.37 NM NM NM NM NM MW-4 03/30/22 103.37 NM NM NM NM NM MW-4 10/04/22 103.37 ----12.04 --91.33 MW-4 06/01/23 103.37 ----11.73 --91.64 MW-5 Well did not exist MW-5 06/02/11 103.23 ----10.23 --93.00 MW-5 08/29/11 103.23 ----10.80 --92.43 MW-5 04/27/12 103.23 ----10.14 --93.09 MW-5 08/16/12 103.23 ----10.69 --92.54 MW-5 02/13/13 103.23 ----10.12 --93.11 MW-5 09/05/13 103.23 ----10.09 --93.14 MW-5 05/01/14 103.23 ----10.01 --93.22 MW-5 09/23/14 103.23 ----10.43 --92.80 MW-5 10/28/15 103.23 ----10.53 --92.70 MW-5 08/03/16 103.23 NM NM NM NM NM MW-5 12/21/17 103.23 NM NM NM NM NM MW-5 06/27/18 103.23 NM NM NM NM NM MW-5 03/25/19 103.23 NM NM NM NM NM MW-5 11/21/19 103.23 NM NM NM NM NM MW-5 06/18/20 103.23 NM NM NM NM NM MW-5 11/18/20 103.23 NM NM NM NM NM MW-5 06/08/21 103.23 NM NM NM NM NM MW-5 07/15/21 103.23 NM NM NM NM NM MW-5 12/20/21 103.23 NM NM NM NM NM MW-5 03/30/22 103.23 NM NM NM NM NM MW-5 10/04/22 103.23 ----10.52 --92.71 MW-5 06/01/23 103.23 ----10.26 --92.97 MW-6 Well did not exist MW-6 06/02/11 103.85 ----10.74 --93.11 MW-6 08/29/11 103.85 ----11.34 --92.51 MW-6 04/27/12 103.85 ----10.69 --93.16 MW-6 08/16/12 103.85 ----11.19 --92.66 MW-6 02/13/13 103.85 ----10.66 --93.19 MW-6 09/05/13 103.85 ----10.59 --93.26 MW-6 05/01/14 103.85 ----10.48 --93.37 MW-6 09/23/14 103.85 ----10.96 --92.89 MW-6 10/28/15 103.85 ----11.04 --92.81 MW-6 08/03/16 103.85 NM NM NM NM NM MW-6 12/21/17 103.85 NM NM NM NM NM MW-6 06/27/18 103.85 NM NM NM NM NM MW-6 03/25/19 103.85 NM NM NM NM NM MW-6 11/21/19 103.85 NM NM NM NM NM MW-6 06/18/20 103.85 NM NM NM NM NM MW-6 11/18/20 103.85 NM NM NM NM NM MW-6 06/08/21 103.85 NM NM NM NM NM MW-6 07/15/21 103.85 NM NM NM NM NM MW-6 12/20/21 103.85 NM NM NM NM NM MW-6 03/30/22 103.85 ----10.65 --93.20 MW-6 10/04/22 103.85 ----11.01 --92.84 MW-6 06/01/23 103.85 ----10.71 --93.14 WELL NUMBER DATE TOC (ft)DTLNAPL (ft)APPARENT LNAPL THICKNESS (ft)DTW (ft), BTOC (ft)BGS (ft) MW-7 Well did not exist MW-7 06/02/11 101.70 ----9.24 --92.46 MW-7 08/29/11 101.70 ----9.64 --92.06 MW-7 04/27/12 101.70 ----9.18 --92.52 MW-7 08/16/12 101.70 ----9.46 --92.24 MW-7 02/13/13 101.70 ----9.13 --92.57 MW-7 09/05/13 101.70 ----9.02 --92.68 MW-7 05/01/14 101.70 ----8.98 --92.72 MW-7 09/23/14 101.70 ----9.39 --92.31 MW-7 10/28/15 101.70 ----9.18 --92.52 MW-7 08/03/16 101.70 NM NM NM NM NM MW-7 12/21/17 101.70 NM NM NM NM NM MW-7 06/27/18 101.70 NM NM NM NM NM MW-7 03/25/19 101.70 NM NM NM NM NM MW-7 11/21/19 101.70 NM NM NM NM NM MW-7 06/18/20 101.70 NM NM NM NM NM MW-7 11/18/20 101.70 NM NM NM NM NM MW-7 06/08/21 101.70 NM NM NM NM NM MW-7 07/15/21 101.70 NM NM NM NM NM MW-7 12/20/21 101.70 NM NM NM NM NM MW-7 03/30/22 101.70 ----9.03 --92.67 MW-7 10/04/22 101.70 ----9.36 --92.67 MW-7 06/01/23 101.70 ----9.16 --92.67 MW-8 Well did not exist MW-8 06/02/11 102.29 ----10.92 --91.37 MW-8 08/29/11 102.29 11.74 0.26 12.00 11.81 90.48 MW-8 04/27/12 102.29 ----11.14 --91.15 MW-8 08/16/12 102.29 11.51 0.04 11.55 11.52 90.74 MW-8 02/13/13 102.29 ----11.10 --91.19 MW-8 09/05/13 102.29 ----11.26 --91.03 MW-8 05/01/14 102.29 ----10.09 --92.20 MW-8 09/23/14 102.29 ----11.59 --90.70 MW-8 10/28/15 102.29 ----10.89 --91.40 MW-8 08/03/16 102.29 ----11.61 --90.68 MW-8 12/21/17 102.29 ----11.29 --91.00 MW-8 06/27/18 102.29 NM NM NM NM NM MW-8 11/21/19 102.29 ----11.66 --90.63 MW-8 06/18/20 102.29 ----10.73 --91.56 MW-8 11/18/20 102.29 ----10.74 --91.55 MW-8 06/08/21 102.29 ----11.64 --90.65 MW-8 07/15/21 102.29 NM NM NM NM NM MW-8 12/20/21 102.29 11.92 0.04 11.96 11.93 90.36 MW-8 03/04/22 102.29 ----11.29 --91.00 MW-8 03/30/22 102.29 11.23 0.01 11.24 11.23 91.06 MW-8 10/04/22 102.29 ----11.49 --90.80 MW-8 06/01/23 102.29 ----11.19 --91.10 MW-9D Well did not exist MW-9D 06/02/11 102.64 ----78.29 --24.35 MW-9D 08/29/11 102.64 ----14.40 --88.24 MW-9D 04/27/12 102.64 ----10.75 --91.89 MW-9D 08/16/12 102.64 ----11.03 --91.61 MW-9D 02/14/13 102.64 ----10.32 --92.32 MW-9D 09/05/13 102.64 ----9.96 --92.68 MW-9D 05/01/14 102.64 ----10.26 --92.38 MW-9D 09/23/14 102.64 ----11.16 --91.48 MW-9D 10/28/15 102.64 ----10.80 --91.84 MW-9D 08/03/16 102.64 NM NM NM NM NM MW-9D 12/21/17 102.64 NM NM NM NM NM MW-9D 06/27/18 102.64 NM NM NM NM NM MW-9D 03/25/19 102.64 NM NM NM NM NM MW-9D 11/21/19 102.64 NM NM NM NM NM MW-9D 06/18/20 102.64 NM NM NM NM NM MW-9D 11/18/20 102.64 NM NM NM NM NM MW-9D 06/08/21 102.64 NM NM NM NM NM MW-9D 07/15/21 102.64 NM NM NM NM NM MW-9D 12/20/21 102.64 NM NM NM NM NM MW-9D 03/30/22 102.64 NM NM NM NM NM MW-9D 10/04/22 102.64 ----11.08 --91.56 MW-9D 06/01/23 102.64 ----10.78 --91.86 WELL NUMBER DATE TOC (ft)DTLNAPL (ft)APPARENT LNAPL THICKNESS (ft)DTW (ft), BTOC (ft)BGS (ft) MW-10 Well did not exist MW-10 08/29/11 98.02 ----15.53 --82.49 MW-10 04/27/12 98.02 ----13.25 --84.77 MW-10 08/16/12 98.02 ----13.77 --84.25 MW-10 02/13/13 98.02 ----13.38 --84.64 MW-10 09/05/13 98.02 ----13.90 --84.12 MW-10 05/01/14 98.02 ----13.11 --84.91 MW-10 09/23/14 98.02 ----14.46 --83.56 MW-10 10/28/15 98.02 ----11.83 --86.19 MW-10 08/03/16 98.02 NM NM NM NM NM MW-10 12/21/17 98.02 NM NM NM NM NM MW-10 06/27/18 98.02 NM NM NM NM NM MW-10 11/21/19 98.02 NM NM NM NM NM MW-10 06/18/20 98.02 NM NM NM NM NM MW-10 11/18/20 98.02 NM NM NM NM NM MW-10 06/08/21 98.02 NM NM NM NM NM MW-10 07/15/21 98.02 NM NM NM NM NM MW-10 12/20/21 98.02 NM NM NM NM NM MW-10 03/30/22 98.02 NM NM NM NM NM MW-10 10/04/22 98.02 NM NM NM NM NM MW-10 06/01/23 98.02 NM NM NM NM NM MW-11 Well did not exist MW-11 08/29/11 93.21 ----9.84 --83.37 MW-11 04/27/12 93.21 ----9.29 --83.92 MW-11 08/16/12 93.21 ----9.52 --83.69 MW-11 02/13/13 93.21 ----9.39 --83.82 MW-11 09/05/13 93.21 ----9.62 --83.59 MW-11 05/01/14 93.21 ----9.42 --83.79 MW-11 09/23/14 93.21 ----9.72 --83.49 MW-11 10/28/15 93.21 ----8.95 --84.26 MW-11 08/03/16 93.21 ----9.62 --83.59 MW-11 12/21/17 93.21 ----9.20 --84.01 MW-11 06/27/18 93.21 ----9.20 --84.01 MW-11 03/25/19 93.21 ----9.43 --83.78 MW-11 11/21/19 93.21 ----9.66 --83.55 MW-11 06/18/20 93.21 ----9.17 --84.04 MW-11 11/18/20 93.21 ----9.24 --83.97 MW-11 06/08/21 93.21 ----9.74 --83.47 MW-11 07/15/21 93.21 NM NM NM NM NM MW-11 12/20/21 93.21 ----9.79 --83.42 MW-11 03/30/22 93.21 ----9.49 --83.72 MW-11 10/04/22 93.21 NM NM NM NM NM MW-11 06/01/23 93.21 NM NM NM NM NM MW-12 Well did not exist MW-12 08/29/11 94.31 ----10.17 --84.14 MW-12 04/27/12 94.31 ----9.74 --84.57 MW-12 08/16/12 94.31 ----10.12 --84.19 MW-12 02/13/13 94.31 ----9.88 --84.43 MW-12 09/05/13 94.31 ----10.14 --84.17 MW-12 05/01/14 94.31 ----9.94 --84.37 MW-12 09/23/14 94.31 ----10.28 --84.03 MW-12 10/28/15 94.31 ----9.69 --84.62 MW-12 08/03/16 94.31 NM NM NM NM NM MW-12 12/21/17 94.31 NM NM NM NM NM MW-12 06/27/18 94.31 NM NM NM NM NM MW-12 03/25/19 94.31 NM NM NM NM NM MW-12 11/21/19 94.31 NM NM NM NM NM MW-12 06/18/20 94.31 NM NM NM NM NM MW-12 11/18/20 94.31 NM NM NM NM NM MW-12 06/08/21 94.31 NM NM NM NM NM MW-12 07/15/21 94.31 NM NM NM NM NM MW-12 12/20/21 94.31 NM NM NM NM NM MW-12 03/30/22 94.31 NM NM NM NM NM MW-12 10/04/22 94.31 ----10.31 --84.00 MW-12 06/01/23 94.31 ----10.18 --84.13 WELL NUMBER DATE TOC (ft)DTLNAPL (ft)APPARENT LNAPL THICKNESS (ft)DTW (ft), BTOC (ft)BGS (ft) MW-13 Well did not exist MW-13 08/29/11 95.18 ----9.88 --85.30 MW-13 04/27/12 95.18 ----10.02 --85.16 MW-13 08/16/12 95.18 ----10.08 --85.10 MW-13 02/14/13 95.18 ----10.04 --85.14 MW-13 09/05/13 95.18 ----10.68 --84.50 MW-13 05/01/14 95.18 ----10.58 --84.60 MW-13 09/23/14 95.18 ----10.69 --84.49 MW-13 10/28/15 95.18 ----10.69 --84.49 MW-13 08/03/16 95.18 NM NM NM NM NM MW-13 12/21/17 95.18 NM NM NM NM NM MW-13 06/27/18 95.18 NM NM NM NM NM MW-13 03/25/19 95.18 NM NM NM NM NM MW-13 11/21/19 95.18 NM NM NM NM NM MW-13 06/18/20 95.18 NM NM NM NM NM MW-13 11/18/20 95.18 NM NM NM NM NM MW-13 06/08/21 95.18 NM NM NM NM NM MW-13 07/15/21 95.18 NM NM NM NM NM MW-13 12/20/21 95.18 NM NM NM NM NM MW-13 03/30/22 95.18 NM NM NM NM NM MW-13 10/04/22 95.18 ----10.61 --84.57 MW-13 06/01/23 95.18 ----10.54 --84.64 MW-14 Well did not exist MW-14 08/29/11 95.92 ----8.90 --87.02 MW-14 04/27/12 95.92 ----8.46 --87.46 MW-14 08/16/12 95.92 ----8.83 --87.09 MW-14 02/14/13 95.92 ----8.29 --87.63 MW-14 09/05/13 95.92 ----8.38 --87.54 MW-14 05/01/14 95.92 ----8.18 --87.74 MW-14 09/23/14 95.92 ----8.41 --87.51 MW-14 10/28/15 95.92 ----8.33 --87.59 MW-14 08/03/16 95.92 NM NM NM NM NM MW-14 12/21/17 95.92 NM NM NM NM NM MW-14 06/27/18 95.92 NM NM NM NM NM MW-14 03/25/19 95.92 NM NM NM NM NM MW-14 11/21/19 95.92 NM NM NM NM NM MW-14 06/18/20 95.92 NM NM NM NM NM MW-14 11/18/20 95.92 NM NM NM NM NM MW-14 06/08/21 95.92 NM NM NM NM NM MW-14 07/15/21 95.92 NM NM NM NM NM MW-14 12/20/21 95.92 NM NM NM NM NM MW-14 03/30/22 95.92 NM NM NM NM NM MW-14 03/30/22 95.92 ----8.32 --87.60 MW-14 10/04/22 96.92 ----8.32 --88.60 MW-14 06/01/23 96.92 ----8.43 --88.49 MW-15 Well did not exist MW-15 08/03/16 92.12 ----8.35 --83.77 MW-15 12/21/17 92.12 ----8.04 --84.08 MW-15 06/27/18 92.12 ----8.02 --84.10 MW-15 03/25/19 92.12 ----8.15 --83.97 MW-15 11/21/19 92.12 ----8.39 --83.73 MW-15 06/18/20 92.12 ----7.97 --84.15 MW-15 11/18/20 92.12 ----8.02 --84.10 MW-15 06/08/21 92.12 ----8.46 --83.66 MW-15 07/15/21 92.12 NM NM NM NM NM MW-15 12/20/21 92.12 ----8.50 --83.62 MW-15 03/30/22 92.12 ----8.19 --83.93 MW-15 10/04/22 92.12 NM NM NM NM NM MW-15 06/01/23 92.12 NM NM NM NM NM MW-16 Well did not exist MW-16 08/03/16 92.02 ----7.64 --84.38 MW-16 12/21/17 92.02 ----8.01 --84.01 MW-16 06/27/18 92.02 ----7.99 --84.03 MW-16 03/25/19 92.02 ----8.17 --83.85 MW-16 11/21/19 92.02 ----8.38 --83.64 MW-16 06/18/20 92.02 ----7.97 --84.05 MW-16 11/18/20 92.02 ----8.02 --84.00 MW-16 06/08/21 92.02 ----8.42 --83.60 MW-16 07/15/21 92.02 NM NM NM NM NM MW-16 12/20/21 92.02 ----8.49 --83.53 MW-16 03/30/22 92.02 ----8.20 --83.82 MW-16 10/04/22 92.02 ----8.47 --83.55 MW-16 06/01/23 92.02 ----8.32 --83.70 Notes: Shaded cells indicate that the water level has been corrected for the presence of LNAPL BTOC - Below Top of Casing (TOC) DTLNAPL - Depth to LNAPL (in feet) DTW - Depth to Water (in feet) BGS - Static Water Elevation (in feet) NM - Not Measured 5,000 84,500 260,000 85,500 70,000 20,000 MW-1 09/21/06 10,100 910 12,800 4,860 NA 2,070 NA 35,000 8,700 2,000 NA MW-1 06/02/11 1,540 2,480 9,710 11,610 ND a 676 26,000 33,300 11,800 0.8 J MW-1 08/29/11 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-1 04/27/12 794 1,900 7,300 10,700 ND a NA NA NA NA NA MW-1 08/16/12 536 1,510 2,580 5,550 133 a NA NA NA NA NA MW-1 02/13/13 400 2,400 2,700 9,600 ND 74 J 650 NA NA NA NA MW-1 09/05/13 110 1,100 750 4,100 ND ND 480 J NA NA NA NA MW-1 05/02/14 110 1,100 590 3,700 ND ND NA NA NA NA NA MW-1 09/23/14 46 880 310 2,750 ND ND 270 NA NA NA NA MW-1 10/28/15 22.2 670 107 2,043 ND ND 329 NA NA NA NA MW-1 08/03/16 51.4 633 107 1,877 7.07 J ND 252 NA NA NA NA MW-1 12/21/17 54.8 592 47.5 J 1,670 ND ND 204 J NA NA NA NA MW-1 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-1 03/25/19 182 V3 503 ND ND 40.7 V3 23.9 V3 114 NA NA NA NA MW-1 11/21/19 370 570 1.39 42.20 34.4 7.48 17.7 NA NA NA NA MW-1 06/18/20 200 371 23.8 J 274 17.8 J ND 26.6 J NA NA NA NA MW-1 11/18/20 375 381 664 1,203 74.7 9.52 J 143 NA NA NA NA MW-1 06/08/21 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-1 07/15/21 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-1 12/20/21 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-1 03/30/22 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-1 10/04/22 207 585 275 3,560 39.1 ND 563 NS NS NS NS MW-1 06/01/23 59.2 157 32.4 334 5.5 ND 242 NS NS NS NS MW-2 06/02/11 3,200 1,150 6,080 3,960 ND a 240 17,200 12,400 a 0.7 J MW-2 08/29/11 1,450 822 820 1,006 74 J 125 J NA NA NA NA NA MW-2 04/27/12 1,400 1,730 1,340 3,322 ND a NA NA NA NA NA MW-2 08/16/12 131 141 ND ND ND 22.8 NA NA NA NA NA MW-2 02/13/13 78 37 3.0 2.2 J 0.46 J 14 12 NA NA NA NA MW-2 09/05/13 3.9 1.0 ND ND ND 4.5 J ND NA NA NA NA MW-2 05/02/14 2.0 4.9 ND ND ND 12 NA NA NA NA NA MW-2 09/23/14 0.16 J 0.37 J ND ND ND 6.4 ND NA NA NA NA MW-2 10/28/15 ND 1.15 ND 4.48 J ND 3.62 ND NA NA NA NA MW-2 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-2 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-2 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-2 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-2 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-2 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-2 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-2 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-2 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-2 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-2 03/30/22 ND ND ND ND 0.504 J 2.30 ND NA NA NA NA MW-2 10/04/22 ND ND ND ND 0.70 2.50 ND NS NS NS NS MW-2 06/01/23 ND ND ND ND 0.38 J 4.00 ND NS NS NS NS MW-3 06/02/11 50.9 25.9 103 122.5 ND ND 8.34 154 ND 191 1.3 J MW-3 08/29/11 155 68.6 129 376.2 23.4 ND NA NA NA NA NA MW-3 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-3 08/16/12 2.56 ND 0.840 J 3.92 J ND ND NA NA NA NA NA MW-3 02/13/13 ND ND ND ND ND ND ND NA NA NA NA MW-3 09/05/13 1.1 1.2 1.8 2.5 J ND ND ND NA NA NA NA MW-3 05/01/14 ND ND ND ND ND ND NA NA NA NA NA MW-3 09/23/14 4.4 5.4 2.6 9.8 ND ND 1.4 NA NA NA NA MW-3 10/28/15 ND ND ND ND ND ND ND NA NA NA NA MW-3 08/03/16 9.12 8.50 4.37 J 21.5 ND ND 7.42 NA NA NA NA MW-3 12/21/17 ND ND ND ND ND ND ND NA NA NA NA MW-3 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-3 03/25/19 ND ND ND ND ND ND 1.76 J NA NA NA NA MW-3 11/21/19 ND ND ND ND ND ND ND NA NA NA NA MW-3 06/18/20 ND ND ND ND ND ND ND NA NA NA NA MW-3 11/18/20 ND ND ND ND ND ND ND NA NA NA NA MW-3 06/08/21 4.29 1.70 1.55 5.14 5.28 0.844 J 3.13 NA NA NA NA MW-3 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-3 12/20/21 37.2 3.20 1.11 1.11 55.4 8.02 2.45 J NA NA NA NA MW-3 03/30/22 ND ND ND ND ND ND ND NA NA NA NA MW-3 10/04/22 27.4 1.0 2.1 4.1 46.9 3.80 15.40 NS NS NS NS MW-3 06/01/23 ND ND ND ND ND ND ND NA NA NA NA MW-4 06/02/11 ND ND ND ND 0.41 6.95 ND ND ND ND 0.8 J MW-4 08/29/11 ND ND ND ND ND 3.11 NA NA NA NA NA MW-4 04/27/12 ND ND ND ND ND 1.56 J NA NA NA NA NA MW-4 08/16/12 ND ND ND ND ND 2.54 NA NA NA NA NA MW-4 02/13/13 ND ND ND ND ND 1.1 J ND NA NA NA NA MW-4 09/05/13 ND ND ND ND ND 3.6 J ND NA NA NA NA MW-4 05/01/14 ND ND ND ND ND 1.5*NA NA NA NA NA MW-4 09/23/14 ND ND ND ND 0.26 J 1.8 NA NA NA NA NA MW-4 10/28/15 ND ND ND ND ND 0.927 J ND NA NA NA NA MW-4 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-4 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-4 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-4 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-4 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-4 6/18/2020 NS NS NS NS NS NS NS NS NS NS NS MW-4 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-4 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-4 07/15/21 NS NS NS NS NS NS NS NS NS NS NS TABLE 5.1 SUMMARY OF HISTORICAL GROUNDWATER MONITORING RESULTS FOR SELECTED COMPOUNDS SPEEDWAY 7972 LENOIR, NORTH CAROLINA INCIDENT NO.: 28414GCL (ug/l) Toluene (ug/l) Total Xylenes (ug/l) Well Number Sample Date C9-C12 Aliphatics (ug/l) Benzene (ug/l) Ethylbenzene (ug/l) C9-C10 Aromatics (ug/l) Lead (ug/l)Diisopropyl ether (DIPE) (ug/l) MTBE (ug/l)Naphthalene (ug/l) C5-C8 Aliphatics (ug/l) 5,000 84,500 260,000 85,500 70,000 20,000 TABLE 5.1SUMMARY OF HISTORICAL GROUNDWATER MONITORING RESULTS FOR SELECTED COMPOUNDSSPEEDWAY 7972LENOIR, NORTH CAROLINA INCIDENT NO.: 28414GCL (ug/l) Toluene (ug/l) Total Xylenes (ug/l) Well Number Sample Date C9-C12 Aliphatics (ug/l) Benzene (ug/l) Ethylbenzene (ug/l) C9-C10 Aromatics (ug/l) Lead (ug/l)Diisopropyl ether (DIPE) (ug/l) MTBE (ug/l)Naphthalene (ug/l) C5-C8 Aliphatics (ug/l) MW-4 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-4 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-4 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-4 06/01/23 NS NS NS NS NS NS NS NS NS NS NS MW-5 06/02/11 ND ND ND ND ND 1.62 ND ND ND ND 0.7 J MW-5 08/29/11 ND ND ND ND ND 1.48 J NA NA NA NA NA MW-5 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-5 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-5 02/13/13 ND ND ND ND ND 0.77 J ND NA NA NA NA MW-5 09/05/13 ND ND ND ND ND 0.76 J ND NA NA NA NA MW-5 05/02/14 ND ND ND ND ND ND NA NA NA NA NA MW-5 09/23/14 ND ND ND ND ND 1.0 NA NA NA NA NA MW-5 10/28/15 ND ND ND ND ND 0.659 J ND NA NA NA NA MW-5 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-5 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-5 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-5 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-5 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-5 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-5 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-5 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-5 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-5 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-5 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-5 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-5 06/01/23 NS NS NS NS NS NS NS NS NS NS NS MW-6 06/02/11 ND ND ND ND ND 3.76 ND ND ND ND 1.2 J MW-6 08/29/11 ND ND ND ND ND 2.58 NA NA NA NA NA MW-6 04/27/12 ND ND ND ND ND 2.00 NA NA NA NA NA MW-6 08/16/12 ND ND ND ND ND 2.68 NA NA NA NA NA MW-6 02/13/13 ND ND ND ND ND 3.2 J ND NA NA NA NA MW-6 09/05/13 ND ND ND ND ND 3.3 J ND NA NA NA NA MW-6 05/01/14 ND ND ND ND 0.49 J 6.1*NA NA NA NA NA MW-6 09/23/14 ND ND ND ND 0.52 4.2 NA NA NA NA NA MW-6 10/28/15 ND ND ND ND 0.640 J 3.41 ND NA NA NA NA MW-6 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-6 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-6 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-6 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-6 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-6 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-6 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-6 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-6 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-6 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-6 03/30/22 ND ND ND ND 2.75 3.46 ND NA NA NA NA MW-6 10/04/22 ND ND ND ND 2.3 2.2 ND NS NS NS NS MW-6 06/01/23 ND ND ND ND 2.7 2.4 ND NS NS NS NS MW-7 06/02/11 ND ND ND ND ND 0.9 ND ND ND ND 24.1 MW-7 08/29/11 ND ND ND ND ND ND NA NA NA NA NA MW-7 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-7 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-7 02/13/13 ND ND ND ND ND 0.81 J ND NA NA NA NA MW-7 09/05/13 ND ND ND ND ND 0.55 J ND NA NA NA NA MW-7 05/01/14 ND ND ND ND ND ND NA NA NA NA NA MW-7 09/23/14 ND ND ND ND ND 0.80 NA NA NA NA NA MW-7 10/28/15 ND ND ND ND ND 0.980 J ND NA NA NA NA MW-7 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-7 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-7 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-7 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-7 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-7 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-7 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-7 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-7 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-7 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-7 03/30/22 ND ND ND ND ND 0.897 J ND NA NA NA NA MW-7 10/04/22 ND ND ND ND ND 0.65 ND NS NS NS NS MW-7 06/01/23 ND ND ND ND ND 0.67 ND NS NS NS NS MW-8 06/02/11 2,300 1,600 12,500 11,220 a NDa 600 22,600 27,900 a 1.1 J MW-8 08/29/11 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-8 04/27/12 805 1,340 5,280 10,240 ND a NA NA NA NA NA MW-8 08/16/12 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-8 02/13/13 700 1,800 3,500 12,000 ND ND 880 NA NA NA NA MW-8 09/05/13 730 1,300 6,900 11,000 ND ND 900 NA NA NA NA MW-8 05/02/14 480 1,100 3,800 8,800 ND ND NA NA NA NA NA MW-8 09/23/14 300 1,400 3,800 7,600 ND ND 710 NA NA NA NA MW-8 10/28/15 140 1,740 3,580 8,970 ND ND 875 NA NA NA NA MW-8 08/03/16 655 942 2,300 4,920 39.1 J ND 670 NA NA NA NA MW-8 12/21/17 180 1,100 2,000 5,480 ND ND 556 NA NA NA NA MW-8 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-8 03/25/19 418 668 1090 2487 46.9 7.75 386 NA NA NA NA 5,000 84,500 260,000 85,500 70,000 20,000 TABLE 5.1 SUMMARY OF HISTORICAL GROUNDWATER MONITORING RESULTS FOR SELECTED COMPOUNDS SPEEDWAY 7972LENOIR, NORTH CAROLINAINCIDENT NO.: 28414GCL (ug/l) Toluene(ug/l) Total Xylenes(ug/l)Well Number Sample Date C9-C12 Aliphatics(ug/l) Benzene(ug/l)Ethylbenzene(ug/l) C9-C10 Aromatics(ug/l) Lead (ug/l)Diisopropyl ether (DIPE)(ug/l)MTBE (ug/l)Naphthalene(ug/l) C5-C8 Aliphatics(ug/l) MW-8 11/21/19 392 585 668 2401 107 ND 193 J NA NA NA NA MW-8 06/18/20 696 445 451 1762 127 19.9 J 197 J NA NA NA NA MW-8 11/18/20 535 376 281 1462 249 35.3 J 236 J NA NA NA NA MW-8 06/08/21 1250 585 440 2287 791 101 255 NA NA NA NA MW-8 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-8 12/20/21 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-8 03/30/22 LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL LNAPL MW-8 10/04/22 597 630 230 3520 401 30.9 919 NS NS NS NS MW-8 06/01/23 703 1010 502 5090 134 ND 1140 NS NS NS NS MW-9d 06/02/11 ND ND 0.64 ND ND ND ND ND ND ND 7.6 MW-9d 08/29/11 ND ND ND ND ND ND NA NA NA NA NA MW-9d 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-9d 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-9d 02/14/13 ND ND ND ND ND ND ND NA NA NA NA MW-9d 09/05/13 ND ND ND ND ND ND ND NA NA NA NA MW-9d 05/02/14 ND ND ND ND ND ND NA NA NA NA NA MW-9d 09/23/14 ND ND ND ND ND ND NA NA NA NA NA MW-9d 10/28/15 ND ND ND ND ND ND ND NA NA NA NA MW-9d 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-9d 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-9d 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-9d 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-9d 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-9d 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-9d 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-9d 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-9d 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-9d 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-9d 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-9d 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-9d 06/01/23 NS NS NS NS NS NS NS NS NS NS NS MW-10 Well did not exist MW-10 08/30/11 ND ND ND ND ND ND ND ND ND ND 17.2 MW-10 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-10 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-10 02/13/13 ND ND ND ND ND ND ND NA NA NA NA MW-10 09/05/13 ND ND ND ND ND ND ND NA NA NA NA MW-10 05/02/14 ND ND ND ND ND ND NA NA NA NA NA MW-10 09/23/14 ND ND ND ND ND ND NA NA NA NA NA MW-10 10/28/15 ND ND ND ND ND ND ND NA NA NA NA MW-10 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-10 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-10 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-10 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-10 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-10 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-10 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-10 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-10 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-10 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-10 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-10 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-10 06/01/23 NS NS NS NS NS NS NS NS NS NS NS MW-11 Well did not exist MW-11 08/30/11 303 ND ND ND ND 335 ND 853 ND ND 4.0 J MW-11 04/27/12 ND ND ND ND 6.27 17.2 NA NA NA NA NA MW-11 08/16/12 71.7 ND ND ND 7.70 75.6 NA NA NA NA NA MW-11 02/13/13 ND ND ND ND 10 8.9 ND NA NA NA NA MW-11 09/05/13 ND ND ND ND ND ND ND NA NA NA NA MW-11 05/02/14 ND ND ND ND 1.3 ND NA NA NA NA NA MW-11 09/23/14 ND ND ND ND 0.61 0.97 NA NA NA NA NA MW-11 10/28/15 20.3 ND ND ND 0.719 J 4.27 ND NA NA NA NA MW-11 08/03/16 ND ND ND ND 0.398 J 0.486 J ND NA NA NA NA MW-11 12/21/17 ND ND ND ND 3.34 0.824 J ND NA NA NA NA MW-11 06/27/18 ND ND ND ND 0.511 J ND ND NA NA NA NA MW-11 03/25/19 ND ND ND ND ND ND ND NA NA NA NA MW-11 11/21/19 ND ND ND ND 14.2 1.19 ND NA NA NA NA MW-11 06/18/20 ND ND ND ND ND ND ND NA NA NA NA MW-11 11/18/20 ND ND ND ND ND ND ND NA NA NA NA MW-11 06/08/21 ND ND ND ND 6.52 0.570 J ND NA NA NA NA MW-11 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-11 12/20/21 ND ND ND ND 36.1 3.69 ND NA NA NA NA MW-11 03/30/22 ND ND ND ND 138 7.85 ND NA NA NA NA MW-11 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-11 06/01/23 NS NS NS NS NS NS NS NS NS NS NS MW-12 Well did not exist MW-12 08/30/11 ND ND ND ND ND ND ND ND ND ND 0.9 J MW-12 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-12 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-12 02/13/13 ND ND ND ND ND ND ND NA NA NA NA MW-12 09/05/13 ND ND ND ND ND ND ND NA NA NA NA MW-12 05/02/14 ND ND ND ND ND ND NA NA NA NA NA MW-12 09/23/14 ND ND ND ND ND ND NA NA NA NA NA MW-12 10/28/15 ND ND ND ND ND ND ND NA NA NA NA MW-12 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-12 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-12 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-12 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-12 11/21/19 NS NS NS NS NS NS NS NS NS NS NS 5,000 84,500 260,000 85,500 70,000 20,000 TABLE 5.1SUMMARY OF HISTORICAL GROUNDWATER MONITORING RESULTS FOR SELECTED COMPOUNDSSPEEDWAY 7972LENOIR, NORTH CAROLINA INCIDENT NO.: 28414GCL (ug/l) Toluene (ug/l) Total Xylenes (ug/l) Well Number Sample Date C9-C12 Aliphatics (ug/l) Benzene (ug/l) Ethylbenzene (ug/l) C9-C10 Aromatics (ug/l) Lead (ug/l)Diisopropyl ether (DIPE) (ug/l) MTBE (ug/l)Naphthalene (ug/l) C5-C8 Aliphatics (ug/l) MW-12 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-12 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-12 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-12 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-12 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-12 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-12 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-12 06/01/23 NS NS NS NS NS NS NS NS NS NS NS MW-13 Well did not exist MW-13 08/30/11 ND ND ND ND ND ND ND ND ND ND 8.5 MW-13 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-13 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-13 02/14/13 ND ND ND ND ND ND ND NA NA NA NA MW-13 09/05/13 ND ND ND ND ND ND ND NA NA NA NA MW-13 05/02/14 ND ND ND ND ND ND NA NA NA NA NA MW-13 09/23/14 ND ND ND ND ND ND NA NA NA NA NA MW-13 10/28/15 ND ND ND ND ND ND ND NA NA NA NA MW-13 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-13 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-13 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-13 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-13 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-13 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-13 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-13 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-13 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-13 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-13 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-13 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-13 06/01/23 NS NS NS NS NS NS NS NS NS NS NS MW-14 Well did not exist MW-14 08/30/11 ND ND ND ND ND ND ND ND ND ND 9.1 MW-14 04/27/12 ND ND ND ND ND ND NA NA NA NA NA MW-14 08/16/12 ND ND ND ND ND ND NA NA NA NA NA MW-14 02/14/13 ND ND ND ND ND ND ND NA NA NA NA MW-14 09/05/13 ND ND ND ND ND ND ND NA NA NA NA MW-14 05/02/14 ND ND ND ND ND ND NA NA NA NA NA MW-14 09/23/14 ND ND ND ND ND ND NA NA NA NA NA MW-14 10/28/15 ND ND ND ND ND ND ND NA NA NA NA MW-14 08/03/16 NS NS NS NS NS NS NS NS NS NS NS MW-14 12/21/17 NS NS NS NS NS NS NS NS NS NS NS MW-14 06/27/18 NS NS NS NS NS NS NS NS NS NS NS MW-14 03/25/19 NS NS NS NS NS NS NS NS NS NS NS MW-14 11/21/19 NS NS NS NS NS NS NS NS NS NS NS MW-14 06/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-14 11/18/20 NS NS NS NS NS NS NS NS NS NS NS MW-14 06/08/21 NS NS NS NS NS NS NS NS NS NS NS MW-14 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-14 12/20/21 NS NS NS NS NS NS NS NS NS NS NS MW-14 03/30/22 NS NS NS NS NS NS NS NS NS NS NS MW-14 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-14 06/01/23 NS NS NS NS NS NS NS NS NS NS NS MW-15 Well did not exist MW-15 08/04/16 2.05 14.7 5.09 37.4 2.75 113 4.96 J 636 492 241 8.72 B MW-15 12/21/17 0.985 J 7.20 0.809 J 5.691 J 2.05 45.2 1.64 J NA NA NA NA MW-15 06/27/18 3.64 3.70 ND 4.88 2.10 40.9 1.30 J NA NA NA NA MW-15 03/25/19 128 20 6.67 12.29 1.55 23.8 3.48 J NA NA NA NA MW-15 11/21/19 ND 0.757 J ND ND 7.47 32.4 ND NA NA NA NA MW-15 06/18/20 62.8 10.6 1.12 7.32 4.00 16.1 1.23 J NA NA NA NA MW-15 11/18/20 1.86 3.95 ND 1.07 J 2.42 12.7 1.25 J NA NA NA NA MW-15 06/08/21 72.1 5.57 1.13 1.60 5.56 17.8 1.00 NA NA NA NA MW-15 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-15 12/20/21 0.145 J 2.07 0.39 J 2.36 7.74 17.0 1.21 J NA NA NA NA MW-15 03/30/22 0.390 J ND ND ND 17.40 14.3 ND NA NA NA NA MW-15 10/04/22 NS NS NS NS NS NS NS NS NS NS NS MW-15 06/01/23 NS NS NS NS NS NS NS NS NS NS NS MW-16 Well did not exist MW-16 08/04/16 218 368 80.4 1,772 1.45 24.6 181 1,380 4,980 1,720 3.50 B J MW-16 12/21/17 73.6 198 22.2 983 1.55 19.7 77.2 NA NA NA NA MW-16 06/27/18 13.4 J 268 ND 1,432 ND ND 154.0 NA NA NA NA MW-16 03/25/19 2.05 98.2 0.643 J 438 ND ND 79.1 NA NA NA NA MW-16 11/21/19 234 36.5 0.766 J 164.5 3.27 14.3 47.4 NA NA NA NA MW-16 06/18/20 1.90 J 13.7 ND 54.8 1.70 J ND 30.7 J NA NA NA NA MW-16 11/18/20 ND 6.98 J ND 25.9 J 2.39 J ND 23.9 J NA NA NA NA MW-16 06/08/21 28.9 7.45 J ND 29.8 J 1.26 J ND 10.3 J NA NA NA NA MW-16 07/15/21 NS NS NS NS NS NS NS NS NS NS NS MW-16 12/20/21 ND 14.0 ND 44.3 9.91 J 11.7 19.5 J NA NA NA NA MW-16 03/30/22 14.6 11.4 ND 43.9 1.19 J 1.34 J 12.8 J NA NA NA NA MW-16 10/04/22 3.7 0.56 ND 1.4 54.4 8.3 0.83 J NS NS NS NS MW-16 06/01/23 14 2.80 ND 9.5 19.6 2.8 3.5 NS NS NS NS Notes:ND - Not detected at or above laboratory's practical quantitation limit MTBE - Methyl tertiary-butyl ether V3 - Analytical results biased high due to sample matrix interference. a - detection limit exceeds NCGQS DIPE - diisopropyl ether EPA NWQC - EPA National Water Quality Criteria NA - Not Analyzed for this parameter GCL - Gross Contamination Level NS - Not Sampled NCGQS - North Carolina Groundwater Quality Standard ** C9-C10 Aromatics (VPH) only. See laboratory report. NE - Standard not established B - Same analyte is found in associated blank All concentrations reported in ug/L - micrograms per literLNAPL- Light non-aqueous phase liquid J- Estimated Value Shaded values exceed 10X 2B NCSWQS, 10X EPA NWQC and/or GCL 51 97 11 450 NE 1,500 12 1,400 NE NE 25 Stream #1 Not sampled on prior datesStream #1 04/13/12 13.5 4.99 15.86 ND ND 1.38 ND ND ND NAStream #1 08/16/12 10.5 2.06 2.44 7.46 ND 1.24 0.870 NA NA NA NAStream #1 02/14/13 15 5.2 6.5 ND 1.4 1.500 NA NA NA NAStream #1 09/05/13 0.71 2.3 1.1 7.2 ND ND 0.79J NA NA NA NAStream #1 05/02/14 6.6 5.0 10 16 ND ND ND NA NA NA NAStream #1 09/23/14 0.21 J 0.57 0.50 1.8 J ND ND ND NA NA NA NAStream #1 12/01/15 4.38 5.86 7.86 16.6 ND 1.11 1.45 J NA NA NA NAStream #1 08/03/16 ND ND ND ND ND ND ND NA NA NA NAStream #1 12/21/17 0.350 J 2.31 2.02 5.53 ND ND 1.60 J NA NA NA NAStream #1 06/27/18 0.464 J 2.38 1.61 7.64 ND ND 1.17 J NA NA NA NAStream #1 03/25/19 0.662 J 3.00 2.25 9.12 ND ND 2.67 J NA NA NA NAStream #1 11/21/19 ND ND ND ND ND ND ND NA NA NA NAStream #1 06/18/20 0.347 J 0.639 J 0.450 J 1.14 J 0.177 J ND ND NA NA NA NAStream #1 11/18/20 0.693 J 2.73 1.29 5.63 J 0.524 J 0.234 J 1.20 J NA NA NA NAStream #1 06/08/21 0.339 J 0.720 J ND 0.732 J 0.440 J 0.104 J ND NA NA NA NAStream #1 07/15/21 1.62 1.21 0.377 J 1.46 J 0.703 J 0.219 J ND NA NA NA NAStream #1 12/20/21 ND 0.569 J ND ND 0.272 J 0.143 J ND NA NA NA NAStream #1 03/30/22 1.64 2.23 1.10 3.68 1.39 0.217 J ND NA NA NA NAStream #1 10/04/22 ND ND ND ND ND ND ND NA NA NA NAStream #1 06/01/23 ND ND ND ND 3.4 ND ND NA NA NA NAStream #2 Not sampled on prior datesStream #2 04/13/12 7.23 3.05 7.83 10.9 ND ND 0.970 ND ND ND NAStream #2 08/16/12 5.67 1.15 1.28 4.13 0.190J 1.55 0.530 NA NA NA NAStream #2 02/14/13 7.6 3.4 9.8 5.2 ND 1.2 0.99J NA NA NA NAStream #2 09/05/13 ND 1.1 0.53 3.4 ND ND ND NA NA NA NAStream #2 05/02/14 2.2 1.9 3.5 6.6 ND ND ND NA NA NA NAStream #2 09/23/14 1.4 1.6 11.3 ND ND 0.59 NA NA NA NAStream #2 12/01/15 1.66 1.76 2.74 J 5.96 ND 0.721 J ND NA NA NA NAStream #2 08/03/16 ND ND ND ND ND ND ND NA NA NA NAStream #2 12/21/17 ND 0.852 J 0.931 J 1.959 J ND ND ND NA NA NA NAStream #2 06/27/18 ND 1.32 0.906 J 3.923 J ND ND ND NA NA NA NAStream #2 03/25/19 ND 0.850 J 0.839 J 2.743 J ND ND ND NA NA NA NAStream #2 11/21/19 ND ND ND ND ND ND ND NA NA NA NAStream #2 06/18/20 0.161 J 0.276 J ND 0.523 J ND ND ND NA NA NA NAStream #2 11/18/20 0.455 J 1.56 1.11 3.38 J 0.468 J 0.209 ND NA NA NA NAStream #2 06/08/21 0.137 J 0.248 J ND ND 0.385 J ND ND NA NA NA NAStream #2 07/15/21 0.916 J 0.642 J ND 0.532 J 0.589 J 0.163 J ND NA NA NA NAStream #2 12/20/21 ND 0.268 J ND ND 0.626 J 0.167 J ND NA NA NA NAStream #2 03/30/22 0.724 J 1.11 0.512 J 1.94 J 1.48 0.201 J ND NA NA NA NAStream #2 10/04/22 NS NS NS NS NS NS NS NS NS NS NSStream #2 06/01/23 NS NS NS NS NS NS NS NS NS NS NSStream #3 Not sampled on prior datesStream #3 04/13/12 NS NS NS NS NS NS NS NS NS NS NS Stream #3 08/16/12 ND ND ND ND ND ND ND NA NA NA NAStream #3 02/14/13 ND ND ND ND ND ND ND NA NA NA NA Stream #3 09/05/13 ND ND ND ND ND ND ND NA NA NA NA Stream #3 05/02/14 ND 0.15 J ND ND ND ND ND NA NA NA NA Stream #3 09/23/14 ND ND 0.10 J ND ND ND ND NA NA NA NA Stream #3 12/01/15 ND ND ND ND ND ND ND NA NA NA NA Stream #3 08/03/16 ND ND ND ND ND ND ND NA NA NA NA Stream #3 12/21/17 ND ND ND ND ND ND ND NA NA NA NA Stream #3 06/27/18 ND ND ND ND ND ND ND NA NA NA NA Stream #3 03/25/19 ND ND ND ND ND ND ND NA NA NA NAStream #3 11/21/19 ND ND ND ND ND ND ND NA NA NA NA Stream #3 06/18/20 ND ND ND ND ND ND ND NA NA NA NA Stream #3 11/18/20 ND ND ND ND ND ND ND NA NA NA NA Stream #3 06/08/21 ND ND ND ND ND ND ND NA NA NA NA Stream #3 07/15/21 ND ND ND ND ND ND ND NA NA NA NA Stream #3 12/20/21 ND ND ND ND ND ND ND NA NA NA NA Stream #3 03/30/22 ND ND 0.659 J ND 0.332 J ND ND NA NA NA NA Stream #3 10/04/22 ND ND ND ND ND ND ND NA NA NA NA Stream #3 06/01/23 ND ND ND ND ND ND ND NA NA NA NA Notes: NA - Not analyzed for this parameter DIPE - diisopropyl ether NE - Standard not established * C9-C12 Aliphatics (VPH) only. See laboratory report. NS - Not sampled ** C9-C10 Aromatics (VPH) only. See laboratory report. All concentrations reported in ug/L - micrograms per liter J- Estimated Value Bold values exceed NC Surface Water Quality Standards (NCSWQS) and EPA National Water Quality Criteria (NWQC) Note: This table summarizes results for selected compounds. Additional compounds may have been detected. Refer to laboratory reports for additional information INCIDENT NO.: 28414 2B NCSWQS or EPA NWQC Diisopropyl ether (DIPE)MTBE TABLE 6 SUMMARY OF HISTORICAL SURFACE WATER SAMPLING RESULTS FOR SELECTED COMPOUNDS SPEEDWAY 7972 LENOIR, NORTH CAROLINA Total Xylenes C9-C12 Aliphatics Sample Location Sample Date Benzene NaphthaleneEthylbenzene Toluene C5-C8 Aliphatics C9-C10 Aromatics Lead Appendix A Groundwater Analytical Report #=CL# July 12, 2023 LIMS USE: FR - BRETT SCHAEFER LIMS OBJECT ID: 92670243 92670243 Project: Pace Project No.: RE: Brett Schaefer AECOM 6000 Fairview Rd Suite 200 Charlotte, NC 28210 SDWY 7972-LENOIR Dear Brett Schaefer: Enclosed are the analytical results for sample(s) received by the laboratory on June 01, 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, Bonnie Vang bonnie.vang@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 25 #=CP# CERTIFICATIONS Pace Project No.: Project: 92670243 SDWY 7972-LENOIR 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 25 #=SS# SAMPLE SUMMARY Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Lab ID Sample ID Matrix Date Collected Date Received 92670243001 MW-1 Water 06/01/23 12:35 06/01/23 14:35 92670243002 MW-2 Water 06/01/23 13:30 06/01/23 14:35 92670243003 MW-3 Water 06/01/23 13:15 06/01/23 14:35 92670243004 MW-6 Water 06/01/23 13:20 06/01/23 14:35 92670243005 MW-7 Water 06/01/23 12:30 06/01/23 14:35 92670243006 MW-8 Water 06/01/23 13:30 06/01/23 14:35 92670243007 MW-16 Water 06/01/23 13:45 06/01/23 14:35 92670243008 STREAM-1 Water 06/01/23 11:40 06/01/23 14:35 92670243009 STREAM-3 Water 06/01/23 11:15 06/01/23 14:35 92670243010 TRIP BLANK Water 06/01/23 14:35 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 25 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts 92670243001 MW-1 SM 6200B 18 PASI-CSAS 92670243002 MW-2 SM 6200B 18 PASI-CSAS 92670243003 MW-3 SM 6200B 18 PASI-CSAS 92670243004 MW-6 SM 6200B 18 PASI-CSAS 92670243005 MW-7 SM 6200B 18 PASI-CSAS 92670243006 MW-8 SM 6200B 18 PASI-CSAS 92670243007 MW-16 SM 6200B 18 PASI-CSAS 92670243008 STREAM-1 SM 6200B 18 PASI-CSAS 92670243009 STREAM-3 SM 6200B 18 PASI-CSAS 92670243010 TRIP BLANK SM 6200B 18 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 25 #=HO# SUMMARY OF DETECTION Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Parameters AnalyzedResult Lab Sample ID Report Limit QualifiersUnitsMethod Client Sample ID 92670243001 MW-1 Benzene 59.2 ug/L 06/09/23 19:145.0SM 6200B Diisopropyl ether 5.5 ug/L 06/09/23 19:145.0SM 6200B Ethylbenzene 157 ug/L 06/09/23 19:145.0SM 6200B Naphthalene 242 ug/L 06/09/23 19:1420.0SM 6200B Toluene 32.4 ug/L 06/09/23 19:145.0SM 6200B Xylene (Total)334 ug/L 06/09/23 19:1410.0SM 6200B m&p-Xylene 205 ug/L 06/09/23 19:1410.0SM 6200B o-Xylene 129 ug/L 06/09/23 19:145.0SM 6200B 92670243002 MW-2 Diisopropyl ether 0.38J ug/L 06/06/23 08:160.50SM 6200B Methyl-tert-butyl ether 4.0 ug/L 06/06/23 08:160.50SM 6200B 92670243004 MW-6 Diisopropyl ether 2.7 ug/L 06/06/23 08:340.50SM 6200B Methyl-tert-butyl ether 2.4 ug/L 06/06/23 08:340.50SM 6200B 92670243005 MW-7 Methyl-tert-butyl ether 0.67 ug/L 06/06/23 08:520.50SM 6200B 92670243006 MW-8 Benzene 703 ug/L 06/06/23 10:0320.0SM 6200B Diisopropyl ether 134 ug/L 06/06/23 10:0320.0SM 6200B Ethylbenzene 1010 ug/L 06/06/23 10:0320.0SM 6200B Naphthalene 1140 ug/L 06/06/23 10:0380.0SM 6200B Toluene 502 ug/L 06/06/23 10:0320.0SM 6200B Xylene (Total)5090 ug/L 06/06/23 10:0340.0SM 6200B m&p-Xylene 3900 ug/L 06/06/23 10:0340.0SM 6200B o-Xylene 1190 ug/L 06/06/23 10:0320.0SM 6200B 92670243007 MW-16 Benzene 14.0 ug/L 06/06/23 09:100.50SM 6200B Diisopropyl ether 19.6 ug/L 06/06/23 09:100.50SM 6200B Ethylbenzene 2.8 ug/L 06/06/23 09:100.50SM 6200B Methyl-tert-butyl ether 2.8 ug/L 06/06/23 09:100.50SM 6200B Naphthalene 3.5 ug/L 06/06/23 09:102.0SM 6200B Xylene (Total)9.5 ug/L 06/06/23 09:101.0SM 6200B m&p-Xylene 8.1 ug/L 06/06/23 09:101.0SM 6200B o-Xylene 1.4 ug/L 06/06/23 09:100.50SM 6200B 92670243008 STREAM-1 Diisopropyl ether 3.4 ug/L 06/06/23 07:400.50SM 6200B 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 5 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Sample:MW-1 Lab ID:92670243001 Collected:06/01/23 12:35 Received:06/01/23 14:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 06/09/23 19:14 75-85-4100036410 tert-Amylmethyl ether ND ug/L 06/09/23 19:14 994-05-810092.5 10 Benzene 59.2 ug/L 06/09/23 19:14 71-43-25.0 3.4 10 tert-Butyl Alcohol ND ug/L 06/09/23 19:14 75-65-050026810 tert-Butyl Formate ND ug/L 06/09/23 19:14 762-75-450029410 Diisopropyl ether 5.5 ug/L 06/09/23 19:14 108-20-35.0 3.1 10 Ethanol ND ug/L 06/09/23 19:14 64-17-5200072210 Ethylbenzene 157 ug/L 06/09/23 19:14 100-41-45.0 3.0 10 Ethyl-tert-butyl ether ND ug/L 06/09/23 19:14 637-92-310032.4 10 Methyl-tert-butyl ether ND ug/L 06/09/23 19:14 1634-04-45.0 4.2 10 Naphthalene 242 ug/L 06/09/23 19:14 91-20-320.0 6.4 10 Toluene 32.4 ug/L 06/09/23 19:14 108-88-35.0 2.4 10 Xylene (Total)334 ug/L 06/09/23 19:14 1330-20-710.0 3.4 10 m&p-Xylene 205 ug/L 06/09/23 19:14 179601-23-110.0 7.1 10 o-Xylene 129 ug/L 06/09/23 19:14 95-47-65.0 3.4 10 Surrogates 1,2-Dichloroethane-d4 (S)107 %06/09/23 19:14 17060-07-070-130 10 4-Bromofluorobenzene (S)101 %06/09/23 19:14 460-00-470-130 10 Toluene-d8 (S)99 %06/09/23 19:14 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 6 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Sample:MW-2 Lab ID:92670243002 Collected:06/01/23 13:30 Received:06/01/23 14:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 06/06/23 08:16 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 06/06/23 08:16 994-05-810.0 9.2 1 Benzene ND ug/L 06/06/23 08:16 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 06/06/23 08:16 75-65-050.0 26.8 1 tert-Butyl Formate ND ug/L 06/06/23 08:16 762-75-450.0 29.4 1 Diisopropyl ether 0.38J ug/L 06/06/23 08:16 108-20-30.50 0.31 1 Ethanol ND ug/L 06/06/23 08:16 64-17-520072.2 1 Ethylbenzene ND ug/L 06/06/23 08:16 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 06/06/23 08:16 637-92-310.0 3.2 1 Methyl-tert-butyl ether 4.0 ug/L 06/06/23 08:16 1634-04-40.50 0.42 1 Naphthalene ND ug/L 06/06/23 08:16 91-20-32.0 0.64 1 Toluene ND ug/L 06/06/23 08:16 108-88-30.50 0.24 1 Xylene (Total)ND ug/L 06/06/23 08:16 1330-20-71.0 0.34 1 m&p-Xylene ND ug/L 06/06/23 08:16 179601-23-11.0 0.71 1 o-Xylene ND ug/L 06/06/23 08:16 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)109 %06/06/23 08:16 17060-07-070-130 1 4-Bromofluorobenzene (S)99 %06/06/23 08:16 460-00-470-130 1 Toluene-d8 (S)100 %06/06/23 08:16 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 7 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Sample:MW-3 Lab ID:92670243003 Collected:06/01/23 13:15 Received:06/01/23 14:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 06/09/23 18:39 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 06/09/23 18:39 994-05-810.0 9.2 1 Benzene ND ug/L 06/09/23 18:39 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 06/09/23 18:39 75-65-0 M150.0 26.8 1 tert-Butyl Formate ND ug/L 06/09/23 18:39 762-75-4 P550.0 29.4 1 Diisopropyl ether ND ug/L 06/09/23 18:39 108-20-30.50 0.31 1 Ethanol ND ug/L 06/09/23 18:39 64-17-520072.2 1 Ethylbenzene ND ug/L 06/09/23 18:39 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 06/09/23 18:39 637-92-310.0 3.2 1 Methyl-tert-butyl ether ND ug/L 06/09/23 18:39 1634-04-40.50 0.42 1 Naphthalene ND ug/L 06/09/23 18:39 91-20-32.0 0.64 1 Toluene ND ug/L 06/09/23 18:39 108-88-30.50 0.24 1 Xylene (Total)ND ug/L 06/09/23 18:39 1330-20-71.0 0.34 1 m&p-Xylene ND ug/L 06/09/23 18:39 179601-23-11.0 0.71 1 o-Xylene ND ug/L 06/09/23 18:39 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)114 %06/09/23 18:39 17060-07-070-130 1 4-Bromofluorobenzene (S)98 %06/09/23 18:39 460-00-470-130 1 Toluene-d8 (S)101 %06/09/23 18:39 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 8 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Sample:MW-6 Lab ID:92670243004 Collected:06/01/23 13:20 Received:06/01/23 14:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 06/06/23 08:34 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 06/06/23 08:34 994-05-810.0 9.2 1 Benzene ND ug/L 06/06/23 08:34 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 06/06/23 08:34 75-65-050.0 26.8 1 tert-Butyl Formate ND ug/L 06/06/23 08:34 762-75-450.0 29.4 1 Diisopropyl ether 2.7 ug/L 06/06/23 08:34 108-20-30.50 0.31 1 Ethanol ND ug/L 06/06/23 08:34 64-17-520072.2 1 Ethylbenzene ND ug/L 06/06/23 08:34 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 06/06/23 08:34 637-92-310.0 3.2 1 Methyl-tert-butyl ether 2.4 ug/L 06/06/23 08:34 1634-04-40.50 0.42 1 Naphthalene ND ug/L 06/06/23 08:34 91-20-32.0 0.64 1 Toluene ND ug/L 06/06/23 08:34 108-88-30.50 0.24 1 Xylene (Total)ND ug/L 06/06/23 08:34 1330-20-71.0 0.34 1 m&p-Xylene ND ug/L 06/06/23 08:34 179601-23-11.0 0.71 1 o-Xylene ND ug/L 06/06/23 08:34 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)109 %06/06/23 08:34 17060-07-070-130 1 4-Bromofluorobenzene (S)96 %06/06/23 08:34 460-00-470-130 1 Toluene-d8 (S)99 %06/06/23 08:34 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 9 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Sample:MW-7 Lab ID:92670243005 Collected:06/01/23 12:30 Received:06/01/23 14:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 06/06/23 08:52 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 06/06/23 08:52 994-05-810.0 9.2 1 Benzene ND ug/L 06/06/23 08:52 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 06/06/23 08:52 75-65-050.0 26.8 1 tert-Butyl Formate ND ug/L 06/06/23 08:52 762-75-450.0 29.4 1 Diisopropyl ether ND ug/L 06/06/23 08:52 108-20-30.50 0.31 1 Ethanol ND ug/L 06/06/23 08:52 64-17-520072.2 1 Ethylbenzene ND ug/L 06/06/23 08:52 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 06/06/23 08:52 637-92-310.0 3.2 1 Methyl-tert-butyl ether 0.67 ug/L 06/06/23 08:52 1634-04-40.50 0.42 1 Naphthalene ND ug/L 06/06/23 08:52 91-20-32.0 0.64 1 Toluene ND ug/L 06/06/23 08:52 108-88-30.50 0.24 1 Xylene (Total)ND ug/L 06/06/23 08:52 1330-20-71.0 0.34 1 m&p-Xylene ND ug/L 06/06/23 08:52 179601-23-11.0 0.71 1 o-Xylene ND ug/L 06/06/23 08:52 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)108 %06/06/23 08:52 17060-07-070-130 1 4-Bromofluorobenzene (S)97 %06/06/23 08:52 460-00-470-130 1 Toluene-d8 (S)100 %06/06/23 08:52 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 10 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Sample:MW-8 Lab ID:92670243006 Collected:06/01/23 13:30 Received:06/01/23 14:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 06/06/23 10:03 75-85-44000146040 tert-Amylmethyl ether ND ug/L 06/06/23 10:03 994-05-840037040 Benzene 703 ug/L 06/06/23 10:03 71-43-220.0 13.8 40 tert-Butyl Alcohol ND ug/L 06/06/23 10:03 75-65-02000107040 tert-Butyl Formate ND ug/L 06/06/23 10:03 762-75-42000118040 Diisopropyl ether 134 ug/L 06/06/23 10:03 108-20-320.0 12.3 40 Ethanol ND ug/L 06/06/23 10:03 64-17-58000289040 Ethylbenzene 1010 ug/L 06/06/23 10:03 100-41-420.0 12.2 40 Ethyl-tert-butyl ether ND ug/L 06/06/23 10:03 637-92-340013040 Methyl-tert-butyl ether ND ug/L 06/06/23 10:03 1634-04-420.0 16.9 40 Naphthalene 1140 ug/L 06/06/23 10:03 91-20-380.0 25.8 40 Toluene 502 ug/L 06/06/23 10:03 108-88-320.0 9.6 40 Xylene (Total)5090 ug/L 06/06/23 10:03 1330-20-740.0 13.5 40 m&p-Xylene 3900 ug/L 06/06/23 10:03 179601-23-140.0 28.4 40 o-Xylene 1190 ug/L 06/06/23 10:03 95-47-620.0 13.5 40 Surrogates 1,2-Dichloroethane-d4 (S)105 %06/06/23 10:03 17060-07-070-130 40 4-Bromofluorobenzene (S)101 %06/06/23 10:03 460-00-470-130 40 Toluene-d8 (S)99 %06/06/23 10:03 2037-26-570-130 40 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 11 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Sample:MW-16 Lab ID:92670243007 Collected:06/01/23 13:45 Received:06/01/23 14:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 06/06/23 09:10 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 06/06/23 09:10 994-05-810.0 9.2 1 Benzene 14.0 ug/L 06/06/23 09:10 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 06/06/23 09:10 75-65-050.0 26.8 1 tert-Butyl Formate ND ug/L 06/06/23 09:10 762-75-450.0 29.4 1 Diisopropyl ether 19.6 ug/L 06/06/23 09:10 108-20-30.50 0.31 1 Ethanol ND ug/L 06/06/23 09:10 64-17-520072.2 1 Ethylbenzene 2.8 ug/L 06/06/23 09:10 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 06/06/23 09:10 637-92-310.0 3.2 1 Methyl-tert-butyl ether 2.8 ug/L 06/06/23 09:10 1634-04-40.50 0.42 1 Naphthalene 3.5 ug/L 06/06/23 09:10 91-20-32.0 0.64 1 Toluene ND ug/L 06/06/23 09:10 108-88-30.50 0.24 1 Xylene (Total)9.5 ug/L 06/06/23 09:10 1330-20-71.0 0.34 1 m&p-Xylene 8.1 ug/L 06/06/23 09:10 179601-23-11.0 0.71 1 o-Xylene 1.4 ug/L 06/06/23 09:10 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)108 %06/06/23 09:10 17060-07-070-130 1 4-Bromofluorobenzene (S)99 %06/06/23 09:10 460-00-470-130 1 Toluene-d8 (S)98 %06/06/23 09:10 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 12 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Sample:STREAM-1 Lab ID:92670243008 Collected:06/01/23 11:40 Received:06/01/23 14:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 06/06/23 07:40 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 06/06/23 07:40 994-05-810.0 9.2 1 Benzene ND ug/L 06/06/23 07:40 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 06/06/23 07:40 75-65-0 M150.0 26.8 1 tert-Butyl Formate ND ug/L 06/06/23 07:40 762-75-4 P550.0 29.4 1 Diisopropyl ether 3.4 ug/L 06/06/23 07:40 108-20-30.50 0.31 1 Ethanol ND ug/L 06/06/23 07:40 64-17-520072.2 1 Ethylbenzene ND ug/L 06/06/23 07:40 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 06/06/23 07:40 637-92-310.0 3.2 1 Methyl-tert-butyl ether ND ug/L 06/06/23 07:40 1634-04-40.50 0.42 1 Naphthalene ND ug/L 06/06/23 07:40 91-20-32.0 0.64 1 Toluene ND ug/L 06/06/23 07:40 108-88-30.50 0.24 1 Xylene (Total)ND ug/L 06/06/23 07:40 1330-20-71.0 0.34 1 m&p-Xylene ND ug/L 06/06/23 07:40 179601-23-11.0 0.71 1 o-Xylene ND ug/L 06/06/23 07:40 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)110 %06/06/23 07:40 17060-07-070-130 1 4-Bromofluorobenzene (S)97 %06/06/23 07:40 460-00-470-130 1 Toluene-d8 (S)100 %06/06/23 07:40 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 13 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Sample:STREAM-3 Lab ID:92670243009 Collected:06/01/23 11:15 Received:06/01/23 14:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 06/06/23 07:58 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 06/06/23 07:58 994-05-810.0 9.2 1 Benzene ND ug/L 06/06/23 07:58 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 06/06/23 07:58 75-65-050.0 26.8 1 tert-Butyl Formate ND ug/L 06/06/23 07:58 762-75-450.0 29.4 1 Diisopropyl ether ND ug/L 06/06/23 07:58 108-20-30.50 0.31 1 Ethanol ND ug/L 06/06/23 07:58 64-17-520072.2 1 Ethylbenzene ND ug/L 06/06/23 07:58 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 06/06/23 07:58 637-92-310.0 3.2 1 Methyl-tert-butyl ether ND ug/L 06/06/23 07:58 1634-04-40.50 0.42 1 Naphthalene ND ug/L 06/06/23 07:58 91-20-32.0 0.64 1 Toluene ND ug/L 06/06/23 07:58 108-88-30.50 0.24 1 Xylene (Total)ND ug/L 06/06/23 07:58 1330-20-71.0 0.34 1 m&p-Xylene ND ug/L 06/06/23 07:58 179601-23-11.0 0.71 1 o-Xylene ND ug/L 06/06/23 07:58 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)111 %06/06/23 07:58 17060-07-070-130 1 4-Bromofluorobenzene (S)98 %06/06/23 07:58 460-00-470-130 1 Toluene-d8 (S)100 %06/06/23 07:58 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 14 of 25 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Sample:TRIP BLANK Lab ID:92670243010 Collected:Received:06/01/23 14:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV tert-Amyl Alcohol ND ug/L 06/06/23 06:10 75-85-410036.4 1 tert-Amylmethyl ether ND ug/L 06/06/23 06:10 994-05-810.0 9.2 1 Benzene ND ug/L 06/06/23 06:10 71-43-20.50 0.34 1 tert-Butyl Alcohol ND ug/L 06/06/23 06:10 75-65-050.0 26.8 1 tert-Butyl Formate ND ug/L 06/06/23 06:10 762-75-450.0 29.4 1 Diisopropyl ether ND ug/L 06/06/23 06:10 108-20-30.50 0.31 1 Ethanol ND ug/L 06/06/23 06:10 64-17-520072.2 1 Ethylbenzene ND ug/L 06/06/23 06:10 100-41-40.50 0.30 1 Ethyl-tert-butyl ether ND ug/L 06/06/23 06:10 637-92-310.0 3.2 1 Methyl-tert-butyl ether ND ug/L 06/06/23 06:10 1634-04-40.50 0.42 1 Naphthalene ND ug/L 06/06/23 06:10 91-20-32.0 0.64 1 Toluene ND ug/L 06/06/23 06:10 108-88-30.50 0.24 1 Xylene (Total)ND ug/L 06/06/23 06:10 1330-20-71.0 0.34 1 m&p-Xylene ND ug/L 06/06/23 06:10 179601-23-11.0 0.71 1 o-Xylene ND ug/L 06/06/23 06:10 95-47-60.50 0.34 1 Surrogates 1,2-Dichloroethane-d4 (S)108 %06/06/23 06:10 17060-07-070-130 1 4-Bromofluorobenzene (S)98 %06/06/23 06:10 460-00-470-130 1 Toluene-d8 (S)100 %06/06/23 06:10 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 15 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670243 SDWY 7972-LENOIR 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: 778340 SM 6200B SM 6200B 6200B MSV Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples:92670243002, 92670243004, 92670243005, 92670243006, 92670243007, 92670243008, 92670243009, 92670243010 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4037450 Associated Lab Samples:92670243002, 92670243004, 92670243005, 92670243006, 92670243007, 92670243008, 92670243009, 92670243010 Matrix:Water AnalyzedMDL Benzene ug/L ND 0.50 06/06/23 04:590.34 Diisopropyl ether ug/L ND 0.50 06/06/23 04:590.31 Ethanol ug/L ND 200 06/06/23 04:5972.2 Ethyl-tert-butyl ether ug/L ND 10.0 06/06/23 04:593.2 Ethylbenzene ug/L ND 0.50 06/06/23 04:590.30 m&p-Xylene ug/L ND 1.0 06/06/23 04:590.71 Methyl-tert-butyl ether ug/L ND 0.50 06/06/23 04:590.42 Naphthalene ug/L ND 2.0 06/06/23 04:590.64 o-Xylene ug/L ND 0.50 06/06/23 04:590.34 tert-Amyl Alcohol ug/L ND 100 06/06/23 04:5936.4 tert-Amylmethyl ether ug/L ND 10.0 06/06/23 04:599.2 tert-Butyl Alcohol ug/L ND 50.0 06/06/23 04:5926.8 tert-Butyl Formate ug/L ND 50.0 06/06/23 04:5929.4 Toluene ug/L ND 0.50 06/06/23 04:590.24 Xylene (Total)ug/L ND 1.0 06/06/23 04:590.34 1,2-Dichloroethane-d4 (S)%108 70-130 06/06/23 04:59 4-Bromofluorobenzene (S)%98 70-130 06/06/23 04:59 Toluene-d8 (S)%100 70-130 06/06/23 04:59 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4037451LABORATORY CONTROL SAMPLE: LCSSpike Benzene ug/L 21.520 108 60-140 Diisopropyl ether ug/L 22.020 110 60-140 Ethanol ug/L 874800 109 60-140 Ethyl-tert-butyl ether ug/L 42.440 106 60-140 Ethylbenzene ug/L 21.120 106 60-140 m&p-Xylene ug/L 42.540 106 60-140 Methyl-tert-butyl ether ug/L 21.220 106 60-140 Naphthalene ug/L 23.220 116 60-140 o-Xylene ug/L 21.220 106 60-140 tert-Amyl Alcohol ug/L 404400 101 60-140 tert-Amylmethyl ether ug/L 42.940 107 60-140 tert-Butyl Alcohol ug/L 204200 102 60-140 tert-Butyl Formate ug/L 166160 104 60-140 Toluene ug/L 20.620 103 60-140 Xylene (Total)ug/L 63.660 106 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 16 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670243 SDWY 7972-LENOIR 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. 4037451LABORATORY CONTROL SAMPLE: LCSSpike 1,2-Dichloroethane-d4 (S)%106 70-130 4-Bromofluorobenzene (S)%101 70-130 Toluene-d8 (S)%98 70-130 Parameter Units MS Result % Rec Limits Qual% RecConc. 4037452MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92670243008 4037453 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Benzene ug/L 20 111 60-140118 6 3020ND22.2 23.5 Diisopropyl ether ug/L 20 110 60-140122 9 30203.4 25.4 27.8 Ethanol ug/L 800 108 60-140116 7 30800ND865926 Ethyl-tert-butyl ether ug/L 40 102 60-140115 11 3040ND41.0 46.0 Ethylbenzene ug/L 20 109 60-140119 9 3020ND21.9 23.9 m&p-Xylene ug/L 40 112 60-140121 8 3040ND44.6 48.5 Methyl-tert-butyl ether ug/L 20 103 60-140113 10 3020ND20.6 22.7 Naphthalene ug/L 20 105 60-140119 13 3020ND20.9 23.9 o-Xylene ug/L 20 108 60-140118 9 3020ND21.5 23.6 tert-Amyl Alcohol ug/L 400 96 60-140105 8 30400ND386418 tert-Amylmethyl ether ug/L 40 105 60-140114 8 3040ND42.1 45.8 tert-Butyl Alcohol ug/L M120013960-140160 14 30200ND279321 tert-Butyl Formate ug/L P51601560-1401 30160NDNDND Toluene ug/L 20 106 60-140112 6 3020ND21.1 22.4 Xylene (Total)ug/L 60 110 60-140120 9 3060ND66.1 72.1 1,2-Dichloroethane-d4 (S)%104 70-130108 4-Bromofluorobenzene (S)%100 70-130102 Toluene-d8 (S)%99 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 17 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670243 SDWY 7972-LENOIR 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: 778844 SM 6200B SM 6200B 6200B MSV Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples:92670243001, 92670243003 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4039903 Associated Lab Samples:92670243001, 92670243003 Matrix:Water AnalyzedMDL Benzene ug/L ND 0.50 06/09/23 15:570.34 Diisopropyl ether ug/L ND 0.50 06/09/23 15:570.31 Ethanol ug/L ND 200 06/09/23 15:5772.2 Ethyl-tert-butyl ether ug/L ND 10.0 06/09/23 15:573.2 Ethylbenzene ug/L ND 0.50 06/09/23 15:570.30 m&p-Xylene ug/L ND 1.0 06/09/23 15:570.71 Methyl-tert-butyl ether ug/L ND 0.50 06/09/23 15:570.42 Naphthalene ug/L ND 2.0 06/09/23 15:570.64 o-Xylene ug/L ND 0.50 06/09/23 15:570.34 tert-Amyl Alcohol ug/L ND 100 06/09/23 15:5736.4 tert-Amylmethyl ether ug/L ND 10.0 06/09/23 15:579.2 tert-Butyl Alcohol ug/L ND 50.0 06/09/23 15:5726.8 tert-Butyl Formate ug/L ND 50.0 06/09/23 15:5729.4 Toluene ug/L ND 0.50 06/09/23 15:570.24 Xylene (Total)ug/L ND 1.0 06/09/23 15:570.34 1,2-Dichloroethane-d4 (S)%111 70-130 06/09/23 15:57 4-Bromofluorobenzene (S)%98 70-130 06/09/23 15:57 Toluene-d8 (S)%99 70-130 06/09/23 15:57 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4039904LABORATORY CONTROL SAMPLE: LCSSpike Benzene ug/L 20.620 103 60-140 Diisopropyl ether ug/L 23.620 118 60-140 Ethanol ug/L 927800 116 60-140 Ethyl-tert-butyl ether ug/L 45.440 113 60-140 Ethylbenzene ug/L 20.220 101 60-140 m&p-Xylene ug/L 41.040 102 60-140 Methyl-tert-butyl ether ug/L 22.520 113 60-140 Naphthalene ug/L 23.120 116 60-140 o-Xylene ug/L 21.020 105 60-140 tert-Amyl Alcohol ug/L 410400 102 60-140 tert-Amylmethyl ether ug/L 44.940 112 60-140 tert-Butyl Alcohol ug/L 209200 104 60-140 tert-Butyl Formate ug/L 181160 113 60-140 Toluene ug/L 19.720 99 60-140 Xylene (Total)ug/L 62.060 103 60-140 1,2-Dichloroethane-d4 (S)%112 70-130 4-Bromofluorobenzene (S)%102 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 18 of 25 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92670243 SDWY 7972-LENOIR 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. 4039904LABORATORY CONTROL SAMPLE: LCSSpike Toluene-d8 (S)%100 70-130 Parameter Units MS Result % Rec Limits Qual% RecConc. 4043368MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92670243003 4043369 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Benzene ug/L 20 130 60-140122 6 3020ND26.0 24.3 Diisopropyl ether ug/L 20 139 60-140128 8 3020ND27.8 25.6 Ethanol ug/L 800 127 60-140116 9 30800ND1020929 Ethyl-tert-butyl ether ug/L 40 130 60-140118 9 3040ND52.0 47.4 Ethylbenzene ug/L 20 123 60-140120 2 3020ND24.5 23.9 m&p-Xylene ug/L 40 125 60-140121 4 3040ND50.0 48.3 Methyl-tert-butyl ether ug/L 20 126 60-140117 8 3020ND25.3 23.4 Naphthalene ug/L 20 121 60-140121 0 3020ND24.3 24.2 o-Xylene ug/L 20 122 60-140118 3 3020ND24.4 23.6 tert-Amyl Alcohol ug/L 400 108 60-14099 9 30400ND434398 tert-Amylmethyl ether ug/L 40 125 60-140115 8 3040ND50.2 46.1 tert-Butyl Alcohol ug/L M120017260-140157 9 30200ND345315 tert-Butyl Formate ug/L P5160160-1401 30160NDNDND Toluene ug/L 20 121 60-140114 5 3020ND24.1 22.8 Xylene (Total)ug/L 60 124 60-140120 3 3060ND74.5 71.9 1,2-Dichloroethane-d4 (S)%111 70-130109 4-Bromofluorobenzene (S)%103 70-130102 Toluene-d8 (S)%99 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 19 of 25 #=QL# QUALIFIERS Pace Project No.: Project: 92670243 SDWY 7972-LENOIR 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 The EPA or method required sample preservation degrades this compound, therefore acceptable recoveries may not be achieved in sample matrix spikes.P5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 20 of 25 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 92670243 SDWY 7972-LENOIR Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 92670243001 778844MW-1 SM 6200B 92670243002 778340MW-2 SM 6200B 92670243003 778844MW-3 SM 6200B 92670243004 778340MW-6 SM 6200B 92670243005 778340MW-7 SM 6200B 92670243006 778340MW-8 SM 6200B 92670243007 778340MW-16 SM 6200B 92670243008 778340STREAM-1 SM 6200B 92670243009 778340STREAM-3 SM 6200B 92670243010 778340TRIP BLANK 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: 07/12/2023 05:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 21 of 25 Page 22 of 25 Page 23 of 25 Page 24 of 25 Page 25 of 25