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Home My WebLink AboutMO-4118_12328_CA_MRP_20230220 100 East Ruffin Street, Mebane, North Carolina 27302 Telephone (919) 563-9091 ·Facsimile (919) 563-9095 www.terraquestpc.com MONITORING REPORT Monitoring Event Conducted on February 8, 2023 SPRINGS ROAD GAS HOUSE 3360 SPRINGS ROAD NORTHEAST HICKORY, NORTH CAROLINA Latitude: 35.7600°, Longitude: -81.2708° NCDWM-UST Incident No. 12328 Facility ID No. 0-007758 NCDWM-UST Risk Ranking: High (H225R) Release Information Date Discovered: June 1994 Estimated Release Quantity: Unknown Release Source: Commercial UST System Capacity of Former USTs: (1) 12,000-gallon, (1) 8,000-gallon, & (1) 6,000-gallon Gasoline USTs Responsible Party / Property Owner: Quality Oil Company, LLC Attn: Don McIver dmciver@qocnc.com P.O. Box 2736 Winston-Salem, NC 27102-2736 (336) 722-3441 Terraquest Project No. 01694 February 20, 2023 Monitoring Report (2/8/23 event) Springs Road Gas House By: Terraquest Environmental Consultants, P.C. Quality Oil Company, LLC Report Prepared: February 20, 2023 i Hickory, Catawba County, NC CERTIFICATION FOR THE SUBMITTAL OF AN ENVIRONMENTAL / GEOLOGICAL ASSESSMENT Attached is the Monitoring Report for: Responsible Party: Quality Oil Company, LLC Address: Post Office Box 2736 City: Winston-Salem State: NC Zip Code: 27102 Site Name: Springs Road Gas House Address: 3360 Springs Road Northeast City: Hickory State: NC Zip Code: 28688 I, Michael J. Brown, a Licensed Geologist in the State of North Carolina for TERRAQUEST ENVIRONMENTAL CONSULTANTS, P.C. do hereby certify that I am familiar with and have reviewed all material including figures within this report and that to the best of my knowledge the data, site assessment, figures, and other associated materials are correct and accurate. All work was performed under my direct supervision. My seal and signature are affixed below. Terraquest Environmental Consultants, P.C. is licensed to practice geology and engineering in North Carolina. The geology certification number of the corporation is C-291. The engineering certification number of the corporation is C-4634. Engineering is practiced out of the Cary, NC office. TERRAQUEST ENVIRONMENTAL CONSULTANTS, P.C. Ryan D. Kerins Michael J. Brown, P.G. Project Manager President Monitoring Report (2/8/23 event) Springs Road Gas House By: Terraquest Environmental Consultants, P.C. Quality Oil Company, LLC Report Prepared: February 20, 2023 ii Hickory, Catawba County, NC TABLE OF CONTENTS ENVIRONMENTAL ACRONYMS.............................................................................................................. iii EXECUTIVE SUMMARY .......................................................................................................................... iv 1.0 INTRODUCTION ......................................................................................................................... 1 2.0 SITE HISTORY AND SOURCE CHARACTERIZATION ..................................................................... 1 3.0 FREE PRODUCT REMOVAL ......................................................................................................... 6 4.0 GROUNDWATER HYDROGEOLOGY ............................................................................................ 6 5.0 GROUNDWATER SAMPLING ...................................................................................................... 6 6.0 SUMMARY AND CONCLUSIONS ................................................................................................. 7 7.0 LIMITATIONS .............................................................................................................................. 8 REFERENCES ........................................................................................................................................... 9 TABLES 1. Site History (UST and AST System Information) 2. Surrounding Property Owners 3. Monitoring Well Construction Information 4. Water Supply Well Information 5. Summary of Groundwater Analytical Results FIGURES 1. Site Location Map 2. Site Vicinity and Receptor Survey Map 3. Site Layout Map 4. Contaminated Soil Extents Map 5. Verification Soil Sample Results Map 6. Potentiometric Surface Map (7/31/17) 7. Groundwater Analytical Results (2/8/23) APPENDICES A. Technical Methods/Standard Procedures B. Chronological Site History C. Historical Groundwater Data D. Analytical Report ENVIRONMENTAL ACRONYMS Monitoring Report (2/8/23 event) Springs Road Gas House By: Terraquest Environmental Consultants, P.C. Quality Oil Company, LLC Report Prepared: February 20, 2023 iii Hickory, Catawba County, NC 2L Standard Groundwater Standards Title 15A NCAC 2L 0.0202(g) 2B Standard Surface Water Standards Title 15A NCAC 2B AFVR Aggressive Fluid-Vapor Recovery AST Aboveground Storage Tank BGL Below Ground Level BTEX Benzene, toluene, ethylbenzene, xylenes C&D Construction and Demolition CAP Corrective Action Plan CAPR Corrective Action Performance Report CADR Corrective Action Design Report CSA Comprehensive Site Assessment DPE Dual-phase Extraction EPA Environmental Protection Agency ePATA Electronic Pre-Approval Task Authorization EPH Extractable Petroleum Hydrocarbons ESA Environmental Site Assessment GCL Gross Contamination Level LEL Lower Explosive Limit LSA Limited Site Assessment IPE di-Isopropyl Ether ISCO In-situ Chemical Oxidation MADEP Massachusetts Department of Environmental Protection MDL Method Detection Limit MNA Monitored Natural Attenuation MMPE Mobile Multi Phase Extraction MSCC Maximum Soil Contaminant Concentration MSL Mean Sea Level MSW Municipal Solid Waste MTBE Methyl tertiary-Butyl Ether NC North Carolina NCAC NC Administrative Code NCDENR NC Department of Environment and Natural Resources NCDEQ NC Department of Environmental Quality NCDOT NC Department of Transportation NCDWM-SW NC Division of Waste Management’s Solid Waste Section NCDWM-UST NC Division of Waste Management’s UST Section NCDWQ NC Division of Water Quality NFA No Further Action NORR Notice of Regulatory Requirements NORP Notice of Residual Petroleum NOV Notice of Violation NPDES National Pollutant Discharge Elimination System OVM Organic Vapor Meter PID Photoionization Detector PLC Programmable Logic Controller POE Point of Entry (water treatment system) POTW Publicly Owned Treatment Works RBCA Risk Based Corrective Action RDL Reporting Detection Limit RP Responsible Party SCFM Standard Cubic Feet per Minute SVE Soil Vapor Extraction STF Leaking UST State Trust Fund STG Soil to Groundwater TA Task Authorization TCC Target Cleanup Concentrations Terraquest Terraquest Environmental Consultants, P.C. TPH Total Petroleum Hydrocarbon UVF Ultraviolet Fluorescence UST Underground Storage Tank VOA Volatile Organic Analysis VOC Volatile Organic Compound VPH Volatile Petroleum Hydrocarbons XP Explosion Proof Monitoring Report (2/8/23 event) Springs Road Gas House By: Terraquest Environmental Consultants, P.C. Quality Oil Company, LLC Report Prepared: February 20, 2023 iv Hickory, Catawba County, NC EXECUTIVE SUMMARY On behalf of Quality Oil Company, LLC, Terraquest Environmental Consultants, P.C. has prepared this Monitoring Report for the release incident at the Springs Road Gas House facility located in Hickory, Catawba County, North Carolina. The release incident has been ranked a High Risk (H225R) due to the presence of dissolved-phase groundwater contamination exceeding the 2L Standard and the presence of active sole-source potable supply wells within 1,000 feet of the release. Under the approved 1997 CAP, the NCDWM-UST Section required the installation and utilization of a pump-and-treat groundwater remediation system enhanced with soil vapor extraction technologies. A secondary CAP was completed for the release incident in 2003 to better address contamination that had migrated into the underlying bedrock. To facilitate the second CAP, additional deep wells were drilled and connected to the site’s remediation system. The remediation system ran until the passing of Session Law 2004-124 at which point in January 2005 the system was turned off. In 2007, The NCDWM-UST Section approved costs to restart the groundwater portion of the remediation system, but not the SVE portion because soil had been previously deemed remediated to target clean-up levels. The groundwater remediation system ran until 2010 at which time the air compressor was discovered to have broken and the NCDWM- UST Section made a determination to not repair the system at that time. In an NORR dated February 14, 2011, the NCDWM-UST directed reactivation of the groundwater treatment system. Subsequent to the discovery of the EOS being damaged in August 2012, Terraquest was directed to leave the system off. Since 2012, Terraquest has been monitoring the release incident for natural attenuation on a semi-annual basis. The groundwater sampling event conducted on February 3, 2023 revealed the continued presence of a 2L Standard violation in the bedrock aquifer that feeds nearby water supply wells used as the sole source. Generally, the contaminant plume appears to be declining. The previous active remediation removed the bulk of the contaminant mass in soil and groundwater. The remaining contaminant mass exists in a dissolved-phase within groundwater. The phreatic aquifer did not have 2L Standard violations for five sampling events in a row and was not sampled as part of this recent event, however, it is considered acceptably treated at this time. The contaminant mass within the bedrock aquifer is now reported as only one compound in one well. The risk of contaminating a sensitive receptor is low. Terraquest recommends closing this release incident. Monitoring Report (2/8/23 event) Springs Road Gas House By: Terraquest Environmental Consultants, P.C. Quality Oil Company, LLC Report Prepared: February 20, 2023 1 Hickory, Catawba County, NC 1.0 INTRODUCTION On behalf of the responsible party, Quality Oil Company, LLC, Terraquest Environmental Consultants, P.C. has prepared this Groundwater Monitoring Report for the Springs Road Gas House facility located in Hickory, NC. The release incident has been ranked a High Risk (H225R) due to the presence of dissolved-phase groundwater contamination exceeding the 2L Standard and the presence of active sole-source potable supply wells within 1,000 feet of the release. This report details the groundwater monitoring event that took place on February 8, 2023. The performed work was authorized under ePATA 12382-070. The site location is depicted in Figure 1. A site vicinity map showing sensitive receptors in the area is provided as Figure 2. The site layout, including the monitoring/recovery well network, is depicted in Figure 3. Terraquest’s technical methods and standard procedures are detailed in Appendix A. A detailed site chronology is provided in Appendix B. 2.0 SITE HISTORY AND SOURCE CHARACTERIZATION UST and Release Information On April 26, 1994, Quality closed the UST system at the site consisting of one 12,000-gallon, one 8,000-gallon, and one 6,000-gallon gasoline USTs. The USTs were replaced with new USTs as part of a planned facility upgrade and remodeling. During the UST closure, petroleum impacted soil was discovered. The North Carolina Department of Water Quality (NCDWQ) was notified of the release and corrective action was initiated. Initial abatement action included the closure of the former USTs and the excavation and disposal of 39 tons of contaminated soils. The results of the UST Closure and Initial Site Characterization studies indicate that the petroleum release is associated with the central and northernmost former dispenser islands. The petroleum release is likely the result of sporadic leakages from the product line joints beneath individual dispensers. The estimated quantity of the subsurface petroleum release is unknown. Monitoring Report (2/8/23 event) Springs Road Gas House By: Terraquest Environmental Consultants, P.C. Quality Oil Company, LLC Report Prepared: February 20, 2023 2 Hickory, Catawba County, NC The current UST system at the site consists of one 12,000-gallon gasoline, one 8,000-gallon gasoline, and one 8,000-gallon diesel USTs. One 550-gallon kerosene AST is also currently active. A site history detailing former and current UST and AST sizes, contents stored, dates of installation, and dates of closure is detailed in Table 1. Site and Surrounding Area Information The site is located in a district of commercial and residential establishments. The vicinity is bordered on two sides by state routes, Springs Road and Section House Road. These routes are maintained by the NCDOT. Their right-of-ways bound the property on the northwest and northeast. The property to the south is occupied by Central Telephone Company. Properties across Springs Road are residential and commercial. Zoning classifications and property boundaries are shown on Figure 2. Surrounding property owner information is listed in Table 2. Land use in the site vicinity is primarily residential with limited commercial development. Topography in the vicinity of the site may be described as hummocky. The elevation of the site is approximately 1,130 feet above MSL. The topography in the immediate site vicinity slopes toward the west-southwest in the direction of a tributary of Snow Creek. The topographic relief between the site location and Snow Creek is approximately 120 feet. The land cover of the site consists of an asphalt lot with some concrete areas and a surrounding grass landscaped yard. The site lies within the Inner Piedmont lithotectonic province, a subdivision of the Appalachian Piedmont Province of North Carolina (Brown, et al, 1985). The Inner Piedmont Belt consists primarily of metamorphosed sedimentary and volcanic rocks of late Proterozoic to early Cambrian age, intruded by granodioritic to granitic plutonic bodies of early, middle, and late Paleozoic age. Scattered Triassic-Jurassic age diabase dikes occur throughout the Inner Piedmont. The lithology immediately underlying the site is mapped as sillimanite-mica schist and gneiss of late Proterozoic to early Cambrian age. Monitoring Report (2/8/23 event) Springs Road Gas House By: Terraquest Environmental Consultants, P.C. Quality Oil Company, LLC Report Prepared: February 20, 2023 3 Hickory, Catawba County, NC The subsurface geology at the site was determined by split spoon sampling during well installations and the soil boring investigation. Site lithology is comprised of three units. The first is a reddish-brown to purplish, slightly micaceous, silty clay extending from grade level to depths of 7.0-9.5 feet below ground level (BGL). Below this unit is a gneissic saprolite unit consisting of fine to coarse grained quartz and weathered plagioclase with trace amounts of biotite and muscovite. Quartz feldspar banding was encountered in the saprolite unit at depths of approximately 9.5' and 14.5' BGL. Apparent dips of approximately 45o SW were noted for the banding encountered during test pit excavations conducted as part of the initial site characterization. These remnant textures are more permeable than the surrounding saprolite and could act as preferential conduits to the water table. The third and lowermost unit is a fine to coarse grained weathered garnet-mica-quartz-feldspar gneiss encountered at depths beginning at approximately 28-30 feet BGL. Depth-to-water measurements have been collected from the monitoring wells during various stages of the assessment to estimate the direction of groundwater flow. Groundwater elevation measurements were reduced to a common datum by surveying the relative elevation of the top of the casing for each monitoring well. The water table elevation data was then used to create a potentiometric surface map which illustrates the interpreted direction and gradient of groundwater flow. Groundwater flow direction has been observed to vary on different sampling dates, but most notably, flow trends towards the west. Historical groundwater elevation data is provided in Appendix C. Well construction information is listed in Table 3. Calculations from the CSA indicate that the bedrock aquifer is characterized by a variable vertical head gradient. Measurements collected on January 4, 1995 reveal that the bedrock aquifer had a vertical head gradient of 0.012. Measurements collected on January 18, 1995 indicate that the bedrock aquifer had a vertical head gradient of - 0.0043. Terraquest performed vertical head gradient calculations to evaluate the gradients existing in the Type III monitoring wells MW6 and MW11. These calculations continue to indicate that a variable, yet positive head gradient exists Monitoring Report (2/8/23 event) Springs Road Gas House By: Terraquest Environmental Consultants, P.C. Quality Oil Company, LLC Report Prepared: February 20, 2023 4 Hickory, Catawba County, NC between the phreatic and bedrock aquifers. Negative head gradients indicate the tendency for groundwater to flow in an upward direction, while positive head gradients indicate the tendency for groundwater to flow in a downward direction. Given the relative location of the site topographically, it is probably located in an area of recharge where groundwater tends to have a downward directed head gradient. Note that the positive head gradients will contribute to the downward migration of contaminants from the phreatic aquifer into the bedrock aquifer. Sensitive Receptors Potable water is supplied to the site and the vicinity by the City of Hickory utilities department. Distribution lines run along Springs Road and Section House Road across from the site. The lines are 12-inch PVC buried approximately 3-4 feet below ground. This depth is above the water table in the site vicinity. As part of previous assessment work, Terraquest identified 18 residential wells within 1,000 feet of the site. Of these, ten wells serve as the primary water supply for the residence. Figure 2 depicts the locations of these wells, and Table 4 summarizes information associated with the wells. Potable wells #3 and #4 are the most likely to be affected by groundwater impacts at the site. They are downgradient and 180 feet and 500 feet from the edge of the plume, respectively. Well #5 is approximately 150 feet upgradient from the edge of the plume. All three are primary water sources for the residences. Construction details on wells #3 and #5 are unknown. Well #4 consists of unscreened 24-inch diameter clay tile to a depth of 48 feet. The bottom is open and the tile joints are not sealed. Chronology of Soil Assessment and Remediation Initially, contaminated soils were discovered in 1994 during UST closure for the original UST system. During the UST closure process, soil samples were collected from beneath each UST, Monitoring Report (2/8/23 event) Springs Road Gas House By: Terraquest Environmental Consultants, P.C. Quality Oil Company, LLC Report Prepared: February 20, 2023 5 Hickory, Catawba County, NC along product line runs, and beneath dispensers. Analysis of soil samples collected during closure activities indicated the presence of TPH concentrations as gasoline up to 13,411 ppm in the vicinity of the central dispenser island and up to 2,748 ppm in the vicinity of the northernmost dispenser island. TPH concentrations above method detection limits were not detected in the closure samples collected below the USTs. As part of Initial Site Characterization activities, a series of twelve (12) soil borings and test pits were installed at the site to determine the groundwater depth, to investigate the horizontal and vertical extent of petroleum impact to soil, and to determine if petroleum-impacted soil was in contact with groundwater. Analysis of soil samples detected TPH concentrations up to 954 ppm in the depth interval above the water table. Soil sample locations and results are depicted on Figure 4. As part of the CSA, a series of eleven (11) drilled soil borings (MW-1 through MW-4, B-11 through B-17) were advanced at the site to determine the horizontal and vertical extent of vadose zone petroleum hydrocarbon impact. Soil samples were analyzed per TPH 5030 for GRO. Soil sample locations and analytical results are depicted on Figure 4. Compilation of the Initial Site Characterization and CSA soil sample results on Figure 4 were utilized to delineate the extent of soil contamination where contaminant concentrations exceeded the historically applicable 10 mg/kg TPH Action Limit. The approved CAP required the installation and operation of a SVE system to remediate the soil plume. The SVE system was installed in late 1997 and ran continuously through early 2003. At that time, Terraquest supervised to advancement of five soil borings (CS1 – CS5) to assess the progress of soil cleanup and determine whether additional remediation was necessary. Analytical results of soil samples collected from CS1 – CS5 revealed no petroleum-type contaminant concentrations in excess of the STG MSCCs. Sample locations and results are depicted on Figure 5. Monitoring Report (2/8/23 event) Springs Road Gas House By: Terraquest Environmental Consultants, P.C. Quality Oil Company, LLC Report Prepared: February 20, 2023 6 Hickory, Catawba County, NC Reporting To date, an UST Closure Report, Site Check Report, Initial Abatement Action Report, Initial Site Characterization Report, CSA, Free Product Recovery Reports, CAP, multiple Active Remediation Monitoring Reports, and multiple Groundwater Monitoring Reports have been submitted for this release incident. 3.0 FREE PRODUCT REMOVAL Free product was not encountered during the February 8, 2023 groundwater monitoring event. 4.0 GROUNDWATER HYDROGEOLOGY No Type II wells were authorized for sampling during this event. The potentiometric surface on the date of sampling is unknown. The potentiometric surface map from the previous sampling event conducted on July 31, 2017 has been included as Figure 6 for reference. Historical groundwater elevation data is provided in Appendix C. 5.0 GROUNDWATER SAMPLING On February 8, 2023, Terraquest personnel sampled monitoring wells chosen by the NCDWM- UST including MW12, MW13, MW14, MW15, and potable wells PW3 and PW4. Prior to sampling, the monitoring and recovery wells were purged of at least three well volumes of water using a new disposable bailer. The same bailers were then used to collect a representative sample from each monitoring/recovery well. The PW3 sample was retrieved from the well using a new disposable bailer, no purging occurred. The PW4 sample was collected from the first available spigot toward the wellhead after the water was allowed to run for several minutes to purge the well and allow for a more representative sample. Upon collection, samples were placed into the appropriate laboratory-prepared containers, and packed on ice pending shipment to a North Monitoring Report (2/8/23 event) Springs Road Gas House By: Terraquest Environmental Consultants, P.C. Quality Oil Company, LLC Report Prepared: February 20, 2023 7 Hickory, Catawba County, NC Carolina-certified laboratory for analysis. All groundwater samples were analyzed for volatile organic compounds by EPA Method 6200B. The analytical results of the February 8, 2023 groundwater sampling event reveal the presence of only one 2L Standard violation in one monitoring well. Monitoring well MW15 had a reported concentration of 31.7 ug/L of naphthalene, exceeding the 6 ug/L 2L Standard for that compound. No petroleum-type compounds were reported above the 2L Standards for any of the other monitoring or water supply wells. Groundwater analytical results are summarized in Table 5 and on Figure 7. Historical groundwater analytical data sheets and graphs are provided in Appendix C. The full analytical report is provided in Appendix D. 6.0 SUMMARY AND CONCLUSIONS The groundwater sampling event conducted on February 8, 2023 confirmed the continued decline of the contamination plume that now has only one compound above the 2L Standards in one well. The risk of contaminating a nearby receptor is low. Terraquest recommends closure of this release incident. Monitoring Report (2/8/23 event) Springs Road Gas House By: Terraquest Environmental Consultants, P.C. Quality Oil Company, LLC Report Prepared: February 20, 2023 8 Hickory, Catawba County, NC 7.0 LIMITATIONS This report is limited to the investigation of dissolved petroleum-hydrocarbons, such as gasoline in groundwater, and does not imply that other unforeseen adverse impacts to the environment are not present at or around the subject facility. In addition, subsurface heterogeneities not identified during the current study may influence the migration of groundwater or contaminants in unpredicted ways. The limited amount of sampling and testing conducted during this study cannot practically reveal all subsurface heterogeneities. Furthermore, the subsurface conditions, particularly groundwater flow, elevations, and water quality may very through time. The opinions and conclusions arrived at in this report are in accordance with industry-accepted geologic and hydrogeologic practices at this time and location. No warranty is implied or intended. Monitoring Report (2/8/23 event) Springs Road Gas House By: Terraquest Environmental Consultants, P.C. Quality Oil Company, LLC Report Prepared: February 20, 2023 9 Hickory, Catawba County, NC REFERENCES Brown, Philip M. et al. 1985. Geologic Map of North Carolina, 1 : 500,000 Scale. North Carolina Department of Natural Resources and Community Development. TABLES Table 1 Date: 2/9/23 Facility ID No.: 0.007758 UST/AST Product Capacity (gallons)Date Installed Date Closed Release Discovered? T1 Gasoline 12,000 5/3/1976 4/26/1994 Yes T2 Gasoline 8,000 5/3/1976 4/26/1994 Yes T3 Gasoline 6,000 5/3/1976 4/26/1994 Yes T4 Gasoline 12,000 4/28/1994 In Use NA T5 Gasoline 8,000 4/28/1994 In Use NA T6 Diesel 8,000 4/28/1994 In Use NA AST Kerosene 550 Unknown InUse NA Notes:1. Information obtained from NC UST Database Records and Turner personel observations during UST closure activities.2. The current UST locations are depicted in Figure 3. SITE HISTORY (UST and AST SYSTEM INFORMATION) Incident Name: Springs Rd. Gas House Incident No.: 12328 Table 2 Date: 2/9/23 Facility ID No. 0-007758 Tax Parcel Number (PIN Number)Property Owner Property Owner Address Property Address DESKINS HOBERT RAY JR 2571 SECTION HOUSE RD NE 2571 SECTION HOUSE RD NE HICKORY NC 28601-9386 HICKORY NC 28601-9386 PROPST HOWARD M LIMITED PARTNERSHIP II RLLLP PO BOX 2007 SPRINGS RD NE HICKORY NC 28601-9386 HICKORY NC 28601-9386 JOHNSON CHARLES O 1134 ELGIN DR SPRINGS RD NE CONOVER NC 28613-7718 HICKORY NC 28601-9386 CENTRAL TELEPHONE PROPERTY TAX DEPT PO BOX 12913 3350 SPRINGS RD NE SHAWNEE MISSION KS 66212-2913 HICKORY NC 28601-9386 STARNES INDUSTRIES INC 3351 SPRINGS RD NE 3351 SPRINGS RD NE HICKORY NC 28601-9100 HICKORY NC 28601-9100 STARNES INDUSTRIES INC 1948 28TH ST NE 3355 SPRINGS RD NE HICKORY NC 28601-3151 HICKORY NC 28601 KILLIAN ANDY 3824 TOUCHBERRY LN NE 3361 SPRINGS RD NE HICKORY NC 28601-8758 HICKORY, NC 28601 QUALITY OIL COMPANY LIMITED PARTNERSHIP 1540 SILAS CREEK PKWY 3360 SPRINGS RD NE WINSTON SALEM NC 27127-3758 HICKORY 28601 Notes: 1. Information gathered from field interviews and Catawba County Geographic Information System. 2. Last 4 digits of PIN number correspond with those displayed on Figure 2. SURROUNDING PROPERTY OWNERS Incident Name: Springs Road Gas House Incident No.: 12328 SITE 372307696260 372307694296 372307698676 372307693683 372307694112 372307692227 372307692472 372307693448 Table 3Date: 2/9/23 Facility ID No: 0-007758 Date Water Depth to Water Level Screened Interval Bottom of Well Top of Casing from Top Free Product Groundwater Measured (x to y ft. BGS)(ft. BGS)Elevation (ft.) of Casing (ft.) Thickness (ft.) Elevation (ft.)CommentsMW18/10/94 -20-35 35 100.00 ---2" diameter Type II monitoring well MW2 8/10/94 -10-25 25 96.13 ---2" diameter Type II monitoring wellMW38/10/94 -11-26 26 99.67 ---2" diameter Type II monitoring well MW3A 1/14/03 -11-35 35 99.83 ---2" diameter Type II monitoring wellMW511/10/94 -11-31 31 98.92 ---4" diameter Type II monitoring wellMW611/10/94 -37.5-42.5 42.5 96.20 ---2" diameter Type III monitoring wellMW812/13/94 -15-25 25 93.71 ---2" diameter Type II monitoring wellMW91/31/96 -12-27 27 100.44 ---2" diameter Type II monitoring well MW10 1/31/96 -15-30 30 101.09 ---2" diameter Type II monitoring wellMW116/19 - 21/2001 -OC: 40 IC: 83 83-93 93 96.44 ---2" diameter Type III monitoring wellMW121/13 - 15/03 2/8/23 38-43 43 96.13 14.57 -81.56 2" diameter Type III monitoring wellMW131/13 - 15/03 2/8/23 38-43 43 97.87 15.83 -82.04 2" diameter Type III monitoring wellMW141/13 - 15/03 2/8/23 40-45 45 97.70 16.15 -81.55 2" diameter Type III monitoring wellMW151/13 - 15/03 2/8/23 45-50 50 100.12 17.89 -82.23 2" diameter Type III monitoring wellMW1610/16/08 -10-35 35 102.29 ---2" diameter Type III monitoring wellRW16/30/97 - 7/2/97 -6-33 33 ----4" diameter Type II recovery wellRW26/30/97 - 7/2/97 -6-33 33 ----4" diameter Type II recovery wellRW36/30/97 - 7/2/97 -6-33 33 ----4" diameter Type II recovery wellRW46/30/97 - 7/2/97 -6-33 33 ----4" diameter Type II recovery wellRW56/30/97 - 7/2/97 -12-27 27 ----4" diameter Type II recovery wellMW48/10/94 -10-25 25 102.97 ---always dry - well abandoned 10/6/08MW78/10/94 -10-25 25 96.97 ---property owner refuses access to wellNotes:1. ft BGS = feet below ground surface 2. OC and IC denote the depth at which the outer and inner casings of the Type III monitoring wells were set. MONITORING WELL CONSTRUCTION INFORMATIONIncident Name: Springs Rd. Gas House Incident No. 12328 Well ID Date Installed Well Casing Depth (ft. BGS) 0 - 200 - 10 0 - 110 - 11 0 - 11OC: 28 IC: 37.50 - 15 0 - 120 - 15 OC: 73OC: 31 IC: 38OC: 31 IC: 38OC: 35 IC: 40OC: 40 IC: 45 0 - 100 - 10 3. Monitoring well MW11 has two outer casings. A ten-inch diameter casing is set at forty feet and a six-inch casing is set at seventy-three feet. The inner-most casing was set at eighty-three feet with an additional ten feet of screen extending to a total depth of ninety-three feet. 0 - 100 - 60 - 60 - 60 - 60 - 12 Table 4Date: 2/9/23 Facility ID No. 0-007758 Primary Sourceof Drinking WaterDonna Abernathy3599 Farmfield Dr.3377 Springs Rd NE Inactive Municipal unknown unknown unknown unknown 688Claremont, NC 28610 Hickory, NC 28601Fred W. Stafford3221 26th Ave. Place NE 3221 26th Ave Pl NE Inactive Municipal unknown unknown unknown unknown 510Hickory, NC 28601 Hickory, NC 28601Andy Killian3824 Touchberry Ln NE 3361 Springs Rd NE Sole-Source Well unknown Bored unknown unknown 225Hickory, NC 28601 Hickory, NC 28601 InactiveBrightstar Properties, LLCPO Box 2570 3307 Springs Rd NE Sole-Source Well 48 Bored 48 none 620Hickory, NC 28603 Hickory, NC 28601 tileHobert Deskins 2571 Section House Rd.2571 Section House Rd NE Non-Potable Municipal unknown unknown unknown unknown 172Hickory, NC 28601 Hickory, NC 28601 Irrigation Dana Isenhour RR 4 Box 399 EA 2564 Section House Rd NE Sole-Source Well unknown Bored unknown unknown 472 Conover, NC 28613 Hickory, NC 28601James T. Boleman2610 34th St Place NE 2610 34th St Place NE Inactive Municipal unknown unknown unknown unknown 688Hickory, NC 28601 Hickory, NC 28601Reginald B. Deal 2602 34th St. PL NE 2602 34th St. PL NE Inactive Municipal unknown unknown unknown unknown 662 Hickory, NC 28601 Hickory, NC 28601Jason Taylor2531 Section House Rd.2531 Section House Rd NE Inactive Municipal unknown unknown unknown unknown 833Hickory, NC 28601 Hickory, NC 28601Clarence W. Austin/ Willine B. Zettie 2381 26th St. NE 3410 25th Ave NE Inactive Municipal unknown unknown unknown unknown 805 Hickory, NC 28601 Hickory, NC 28601Kao Yang 2520 33rd St. Pl NE 2520 33rd St NE Inactive Municipal unknown unknown unknown unknown 513 Hickory, NC 28601 Hickory, NC 28601Maria Lemon De Ibassa 2540 33rd St. PL NE 2540 33rd St. PL NE Inactive Municipal unknown unknown unknown unknown 361 Hickory, NC 28601 Hickory, NC 28601 Barbara P. White3335 25th Ave. NE 3335 25th Ave. NE Inactive Municipal 40 Bored 40 none 602 Hickory, NC 28601 Hickory, NC 28601 tileEverette C. Mathews 3325 25th Ave. NE 3325 25th Ave. NE Inactive Municipal unknown Bored 40 none 595 Hickory, NC 28601 Hickory, NC 28601 tileWilliam B. Huffman2123 35th Street NE 3334 25th Ave Pl NE Inactive Municipal unknown unknown unknown unknown 810 Hickory, NC 28601 Hickory, NC 28601Holcombe Properties of Hickory, LLC6345 Sulfur Springs Rd. NE 2448 33rd St NE Inactive Municipal unknown unknown unknown unknown 769Hickory, NC 28601 Hickory, NC 28601Katherine B. and Roger A. Ledford 2615 34th St. PL NE 2615 34th St Pl NE Sole-Source Well unknown Bored unknown unknown 513Hickory, NC 28601 Hickory, NC 28601Donna Abernethy 3599 Farmfield Dr.3381 Springs Rd Sole-Source Well unknown Bored unknown unknown 753Claremont, NC 28610 Hickory, NC 28601 InactiveNotes:1. ft. BGS - feet below ground surface2. Information obtained from TerraQuest field interviews, Catawba County GIS, and Town of Hickory Water Department3. Well ID numbers are displayed on Figure 2. Distance from Source Area of Release (ft.)Well Use Well Depth (ft. BGS)Type of Well Casing Depth (ft. BGS) Incident Name: Springs Road Gas House Incident No. 12328 Parcel No.Well Owner/Address Well Address WATER SUPPLY WELL INFORMATION Screen Interval (ft. BGS)Map Ref. No. 1 2 3 4 5 6 16 17 18 7 8 9 10 11 12 1146 1006 0677 13 14 15 5061 2802 3448 9071 6260 9233 1556 9395 6131 6473 5880 6905 4702 3713 3431 Table 5 Date: 2/20/2023 6200B6200B6200B6200B6200B6200B6200B6200B6200B6200B6200B6200BSample ID Date Collected PW3 2/8/2023 < 0.130 < 0.410 < 0.500 < 1.60 < 0.220 < 0.760 < 0.700 < 1.00 < 0.530 < 3.00 < 0.690 < 0.820 PW4 2/8/2023 < 0.130 < 0.410 < 0.500 < 1.60 < 0.220 < 0.760 < 0.700 < 1.00 < 0.530 < 3.00 < 0.690 < 0.820 MW12 2/8/2023 < 0.130 < 0.410 < 0.500 < 1.60 16.3 < 0.760 < 0.700 1.01 < 0.530 < 3.00 < 0.690 < 0.820 MW13 2/8/2023 < 0.130 < 0.410 < 0.500 < 1.60 < 0.220 < 0.760 < 0.700 < 1.00 < 0.530 < 3.00 < 0.690 < 0.820 MW14 2/8/2023 < 0.130 < 0.410 < 0.500 < 1.60 0.694 < 0.760 < 0.700 1.85 < 0.530 < 3.00 < 0.690 < 0.820MW152/8/2023 0.349 < 0.410 0.776 < 1.60 3.74 1.12 1.37 < 1.00 5.37 31.7 1.27 0.93 1 600 600 500 20 70 70 70 70 6 70 400Note: 1. All results in parts per billion. 2. Bold denotes a detected compound. 3. Shading denotes a 2L Standard violation. BEDROCK AQUIFER MONITORING WELL SAMPLING 2L Standards IsopropylbenzeneNaphthalenen-Propylbenzene1,2,4-TrimethylbenzenFacility ID No. : 0-007758Incident Name: Springs Road Gas House Incident No.: 12328 n-ButylbenzeneSec-ButylbenzeneChloroformPOTABLE WELL SAMPLING SUMMARY OF GROUNDWATER SAMPLING RESULTS * Analytical Method Contaminant of Concern BenzeneTolueneEthylbenzeneTotal XylenesMethyl tert-butyl ethe FIGURES NVIRONMENTAL ONSULTANTS, P.C.E C ZONINGNC: NEIGHBORHOOD COMMERCIALCC-2: COMMERCIAL CORRIDORR-1: RESIDENTIALNCNCR-1R-1R-1R-1CC-2CC-2SURROUNDING PROPERTY OWNERS"4112"-CORRESPONDS TO LAST 4 OFPIN NUMBERS LISTED IN TABLE 2. APPENDIX A Page 1 of 8 TECHNICAL METHODS/STANDARD PROCEDURES Equipment Decontamination All soil sampling equipment utilized during site assessment activities is decontaminated according to standard and accepted protocol. Cleaning solutions range from clean potable water to acidic solutions or organic solvents depending on the contaminants present at the site. Equipment utilized at sites, such as hand augers, contaminated with petroleum hydrocarbons, is generally decontaminated with a low‐sudsing detergent such as Luiquinox® and triple rinsed with distilled water. Larger equipment, such as drill rigs and associated tools, is steam cleaned. All decontamination procedures are completed within an established decontamination area which is located away from the active study area. Frequency of equipment decontamination depends on the nature of work being performed, but in no case is decontamination performed less frequently than once per test (i.e., soil boring, well installation, sample collection, etc.). Equipment blanks are collected as a quality control measure when required by job specifications. Soil Boring Installation Soil borings are completed using hand‐operated sampling tools, truck‐mounted drills, or Geoprobe® drilling rigs depending on the depth of sample collection and other site‐specific conditions. Hand operated stainless‐steel bucket augers are utilized to collect soil samples at regular intervals to determine site stratigraphy and to test for the presence of volatile organic compounds. Samples retrieved from the hand auger are necessarily disturbed during the augering process, but can provide accurate information on soil type and contaminant concentrations when properly interpreted. Soil samples from hand augered borings are generally retrieved at one to two foot intervals. Truck‐mounted or Geoprobe® drilling equipment is often utilized when sample retrieval depths exceed twenty feet or subsurface conditions prevent utilization of hand augers (i.e., buried rocks, wood, bricks or other materials occur in the subsurface). Truck‐mounted drilling rigs usually retrieve soil via a hollow‐stem auger/split spoon collection method. Geoprobe® rigs usually employ a Macro‐Core® tube retrieval system. Hollow stem augers provide relatively undisturbed 2‐foot cores of soil samples. Soil samples are generally collected at five foot intervals utilizing standard penetration test procedures as defined by the American Society for Testing and Materials (ASTM) or are pushed to the desired depth using the head of the drill rig. The standard penetration test involves driving a 2" outside diameter by 1‐ 3/8" inside diameter split‐spoon sampler a minimum distance of one foot with a 340‐lb. slide hammer falling a distance of 30 inches. A Geoprobe® rig is a hydraulically‐powered soil probing machine. The probe utilizes static force and percussion to advance a small diameter sampling device into the subsurface. The sampling apparatus provides relatively undisturbed 5‐foot cores of soil samples. Soil samples are collected Page 2 of 8 continuously. The Macro‐Core® tube contains an inserted poly‐vinyl chloride (PVC) liner which retains the soil sample as the tube is driven into the ground. The Macro‐Core® tube is decontaminated between each 5‐foot sample interval in a soil boring using a Liquinox and tap‐ water mixture. A new PVC liner is used to collect soil from each sample interval in a soil boring. Soil samples retrieved from the hollow‐stem augers or Geoprobe are then carefully described according to the Unified Soil Classification System. Soil descriptions are recorded on a soil boring log. Soil Sampling Soils to be analyzed by a North Carolina‐certified laboratory are prepared according to the specified analytical method. Initially, soil samples are removed from the ground using either a hand auger, backhoe bucket, spilt spoon auger, or a Macro‐Core® sampling tube. During the removal, care is taken to keep the disturbance of the soil structure to a minimum to reduce the loss of contaminants. Once removed, the samples are placed in the proper sample container for the specified analytical method. For samples collected for the MADEP VPH and EPA Method 8260, a TerraCore® sampler is used to collect one 5‐gram allotment of soil. The allotment is placed in methanol‐preserved 40 mL vials. Also, one 5‐gram allotment of soil is placed into sodium bisulfate‐ preserved 40 mL vials (one 5‐gram allotment per vial, 2 vials per sample) for the 8260 low concentration method. A 250‐mL glass jar of the sampled soil is also collected to provide moisture content information. Soils sampled for MADEP EPH, EPA Method 8270 and TPH 5030 and 3550 are placed in a 250‐mL glass jar (for MADEP EPH analysis an amber jar is required). TPH 5030 samples are preserved in methanol similar to the 8260 analysis. Field personnel wear new, disposable nitrile gloves during the collection of each sample. The soil samples are labeled with the sample location, sample identification, date and time of collection, and the analytical method. The samples are placed on ice, sent to a laboratory, and analyzed before the expiration of an analytical method’s prescribed holding time. Chain‐of‐custody documentation is maintained for each sample collected in the field. If the soil is being sampled for volatile or semi‐volatile compounds, a portion of the collected soil is placed in a sealable bag and screened for volatile organic vapors. Head screening procedures are described in the following paragraph. Headspace Screening Collected soil samples are routinely tested for the presence of volatile organic compounds (VOCs). After retrieval from the ground, a portion of a soil sample is placed in a sealable plastic bag. The soil samples are then set aside for approximately five minutes so that volatile constituents present in the sample can reach equilibrium concentrations with headspace gases in the bag. Once a suitable time period has passed, the probe of the sampling instrument, typically an Organic Vapor Monitor (OVM) or a Photo Ionization Detector (PID), is inserted into the bag and the relative concentration of total VOCs is measured and permanently recorded in a field note book. VOC Page 3 of 8 concentrations are measured using either a Thermo Electron Corp. Innova Series catalytic OVM or an Ion Science PhoCheck PID. Both the OVM and PID instrumentation are periodically calibrated according to the manufacturer’s recommended procedures. The OVM and PID are qualitative tools employed to detect and estimate the concentration of organic or hydrocarbon vapors. A thin probe is inserted through a small break in the seal of a bagged soil sample. For the OVM, an air sample from the headspace of the bag is drawn through the probe into an internal chamber where the vapors are catalyzed. The concentration of the VOCs is registered on a digital scale in parts per million (ppm). For the PID, an air sample from the headspace of the bag is drawn across the face of a lamp causing the sample to emit photons, the presence of which are converted into a VOC ppm reading that is displayed. Oxygen levels are field calibrated prior to each use. VOC calibration occurs periodically depending upon use by using a span gas of known concentration in a process recommended by the manufacturer. Well Installation/Construction Monitoring wells are installed using hand‐operated sampling tools, a truck‐mounted drill rig, or a Geoprobe drilling rig depending on the depth of well and other site‐specific conditions. All monitoring wells are installed according to the requirements of 15A NCAC 2C‐Well Construction Standards. Specifically, individual monitoring wells are constructed of 2‐inch diameter, schedule 40 PVC casing riser and screen. The screen interval is generally 10 to 15 feet of machine slotted PVC with a slot size of 0.010". Only flush threaded joints are used. The annulus space around the screen is filled with washed filter pack No. 2 sand. The filter pack extends one to two feet above the top of the screen. A one to two foot‐thick bentonite pellet seal is then placed above the filter pack. The remainder of the well annulus is completely filled with a Portland (Type I/II) cement grout mixture. A protective outer steel manhole, locking cap, and concrete pad is installed for each well. Type II Monitoring Well Construction Single‐cased monitoring wells are generally used in delineation of groundwater quality within the surficial aquifer. The wells are constructed of 2‐inch diameter, schedule 40 PVC casing and screen. The screen interval is generally 10 to 15 feet of machine slotted PVC with a slot size of 0.010". Only flush threaded joints are used. The annulus space around the screen is filled with washed filter pack No. 2 sand. The filter pack extends one to two feet above the top of the screen. A one to two foot‐thick bentonite pellet seal is then placed above the filter pack. The remainder of the well annulus is completely filled with a Portland (Type I/II) cement grout mixture. A protective outer steel manhole, locking cap, and concrete pad are installed for each well. Type III Monitoring Well Construction Double‐cased monitoring wells are used in the delineation of groundwater quality within a deeper portion of the surficial aquifer or an additional aquifer (e.g. aquitard, bedrock). A four to six‐inch outer casing is installed through the surficial aquifer until a sufficient depth or until the deeper Page 4 of 8 aquifer is encountered. The casing is secured with a Portland‐grout collar that is tremmied into the annular spaced from the bottom of the bore hole to the surface. Once the grout has sufficiently cured, the bore hole is continued through the bottom of the outer casing to a depth approximately 15 ‐ 20 feet beneath the outer casing. The inner casing is constructed of 2‐inch diameter, schedule 40 PVC casing riser and screen. The screen interval is generally 5 to 10 feet of machine slotted PVC with a slot size of 0.010". Only flush threaded joints are used. The annulus space around the screen is filled with washed filter pack No. 2 sand. The filter pack extends one to two feet above the top of the screen. A one to two foot‐thick bentonite pellet seal is then placed above the filter pack. The remainder of the well annulus is completely filled with the same Portland grout mixture used in the outer casing. A protective outer steel manhole, locking cap, and concrete pad are installed for each well. Well Development Following installation of each well, surging and pumping or bailing techniques will be used to remove fines from the screened interval. Groundwater is removed from each well until clear water is retrieved or a noticeable reduction in the amount of silt is achieved. Purged groundwater is disposed of in an environmentally safe manner. Groundwater Sampling Petroleum Sites Groundwater samples are collected from temporary or permanent monitoring wells according to established sampling protocol. When multiple monitoring wells or sampling points are sampled, sampling is completed beginning with the least contaminated well to the most contaminated well, if it is known. When permanent monitoring wells for petroleum sites are sampled, the well is purged of a minimum of three well‐bore volumes prior to sample collection in order to assure that sampled water is representative of aquifer conditions. In temporary wells, the first water which migrates into the open borehole is sampled. Samples from both temporary and permanent monitoring wells are collected using individually wrapped disposable polyethylene bailers by field personnel wearing disposable nitrile gloves. Only one well is sampled with a given bailer in order to prevent sample cross‐contamination. During both well purging and sampling, proper protective clothing and equipment is used and is dependent upon the type and level of contaminants present. Also, field personnel change gloves between different samples to reduce the chance of cross‐ contamination. Water samples are transferred from the bailer to laboratory‐prepared sampling containers using slow emptying devices to reduce the chance of contamination loss through volatilization. Preservatives, such as acids, are provided by the laboratory in pre‐prepared containers in which collected samples are placed if in‐field preservation is necessary. The samples are labeled with the project name, project number, sample identification, required analysis, and date and time of collection. The samples are placed on ice, shipped to a certified laboratory, and analyzed before the expiration of an analytical method’s prescribed holding time. Chain‐of‐custody documentation is maintained for each sample collected in the field. Page 5 of 8 Other Groundwater Sampling Protocols When required by state or federal regulations, low‐flow groundwater sampling procedures are instituted. Groundwater samples collected in low‐flow situations are collected using a peristaltic pump. A peristaltic pump is a type of positive displacement pump. The fluid is contained within a flexible tube fitted inside a circular pump casing. A rotor with a number of rollers attached to the external circumference compresses the flexible tube. As the rotor turns, the part of tube under compression closes thus forcing the fluid to be pumped to move through the tube. Groundwater parameters such as water level drawdown, pH, conductivity, dissolved oxygen (DO) and turbidity. Pumping rate, drawdown, and the time or volume required to obtain stabilization of parameter readings can be used as a future guide to purge the well. Measurements are collected at a pre‐ pumping established interval (typically five to ten minutes). Once all or a majority of the parameters have stabilized for three successive readings, stabilization has been achieved. In lieu of measuring all five parameters, a minimum subset would include pH, conductivity, and turbidity or DO. Three successive readings should be within ± 0.1 for pH, ± 3% for conductivity, and ± 10% for turbidity and DO. Upon parameter stabilization, sampling is initiated. Sampling flow rate is maintained at the estab‐ lished purge rate or is adjusted slightly to minimize aeration, bubble formation, turbulent filling of sample bottles, or loss of volatiles due to extended residence time in tubing. The same device used for purging is used to collect the groundwater sample. Generally, volatile parameters are sampled first. The sequence in which samples for inorganic parameters are collected is not determined unless filtered (dissolved) samples are collected. Preservatives, such as acids, are provided by the laboratory in pre‐prepared containers in which collected samples are placed if in‐field preservation is necessary. The samples are labeled with the project name, project number, sample identification, required analysis, and date and time of collection. The samples are placed on ice, shipped to a certified laboratory, and analyzed before the expiration of an analytical method’s prescribed holding time. Chain‐of‐custody documentation is maintained for each sample collected in the field. During both well purging and sampling, proper protective clothing and equipment is used and is dependent upon the type and level of contaminants present. Also, field personnel change gloves between different monitoring wells or sampling points to reduce the chance of cross‐ contamination. When multiple monitoring wells or sampling points are sampled, sampling is completed beginning with the least contaminated well to the most contaminated well, if it is known. Stockpile Sampling The number of composite samples collected from a stockpile or a total quantity of excavated soil is based upon the cubic yardage. One composite sample is collected for every 100 cubic yards of contaminated soil excavated. The volume of a stockpile or total quantity of excavated soil is calculated by approximating the general geometry of a stockpile or estimating the capacity of the Page 6 of 8 dump trucks used for hauling. If a stockpile is sampled, a grid pattern is laid out on the stockpile, dividing the stockpile into segments of approximately 200 cubic yards. Two soil borings are advanced within a grid and three soil samples are collected from each soil boring at various depths. The six soil samples are mixed into a composite sample by a trained TerraQuest technician. If truck loads are sampled, an aliquot sample is collected from the hauling trucks at a frequency based upon the capacity of the hauling trucks. Aliquots are gently mixed into a composite sample by a trained TerraQuest technician. Every effort is made to minimize the loss of contaminants through volatilization. The composited soil samples are jarred in the appropriate laboratory‐prepared containers, labeled with the sample location, sample identification, date of collection, time of collection, the analytical method, and the preservative. The samples are placed on ice, shipped to a laboratory, and analyzed before the expiration of an analytical method’s prescribed holding time. Chain‐of‐custody documentation is maintained for each sample collected in the field. Surface Water Sampling Surface water samples, specifically samples from creeks or streams, are collected from a moving/flowing portion of the creek or stream to ensure that stagnant water is not collected. Field personnel are careful to collect samples from flowing areas that are not so turbulent as to cause a loss of volatile contaminants which might have been contained in the creek’s/stream’s water. Samples are collected by field personnel wearing disposable nitrile gloves. Field personnel change gloves between different locations to reduce the chance of cross‐contamination. Samples are collected directly from the appropriate creek or stream location and placed into the appropriate laboratory‐prepared containers. Preservatives, such as acids, are provided by the laboratory in pre‐ prepared containers in which collected samples are placed if in‐field preservation is necessary. The samples are labeled with the project name, project number, sample identification, required analysis, and date and time of collection. The samples are cooled on ice to approximately four degrees centigrade, shipped to a certified laboratory, and analyzed before the expiration of an analytical method’s prescribed holding time. Chain‐of‐custody documentation is maintained for each sample collected in the field. Potable Well Sampling Groundwater samples from potable wells are collected from sampling points, typically spigots, located in the closest proximity to the potable well pump house as possible. Prior to sample collection, the water is run for a sufficient amount of time to purge the bladder tank and assure that sampled water is representative of aquifer conditions. Once purged, the flow rate is reduced and samples are placed in the appropriate laboratory prepared containers with the appropriate acid preservatives added if preservation of the sample is necessary. The samples are labeled with the project name, project number, sample identification, required analysis, and date and time of collection. The samples are placed on ice, shipped to a laboratory, and analyzed before the expiration of an analytical method’s prescribed holding time. Chain‐of‐custody documentation is maintained for each sample collected in the field. Page 7 of 8 Public Water Supply Line Sampling Groundwater samples from public water supply lines are collected from sampling points, typically spigots. To sample the spigot, the flow rate is reduced and samples are placed in the appropriate laboratory prepared containers. The samples are labeled with the sample location, sample identification, date of collection, time of collection, and required analytical method. The samples are placed on ice, shipped to a laboratory, and analyzed before the expiration of an analytical method’s prescribed holding time. Chain‐of‐custody documentation is maintained for each sample collected in the field. Air Sampling Air samples are collected with the aide of a manually operated MityVac® pump manufactured by Pristech, Inc. The air sampling process begins by connecting a length of rubber hose from the MityVac® pump to the port to be sampled, or by hanging the hose inside of an emissions stack in such a manner as to ensure no outside air causes dilution. Another length of hose is fixed to the outlet port of the pump and is connected to a new Tedlar bag. Once the pump is hooked up, a valve on the Tedlar collection bag is opened and air is manually forced into the bag by the pumping action of sampling personnel. Field Measurements Field measurements taken to determine the pH, conductivity, temperature, and dissolved oxygen concentration of a particular groundwater sample are taken directly after a particular monitoring well has been adequately purged. This ensures that the groundwater parameter data collected is representative of the aquifer conditions at a given location. Once purging of the monitoring well is complete, the decontaminated probe head and cord of the appropriate unit is lowered into the required monitoring well. If the depth to water in a specific monitoring well is greater than the length of cord for a particular unit, a new, disposable bailer is slowly lowered into the appropriate monitoring well and a representative groundwater sample is retrieved. A slow pouring device is fitted onto the end of the disposable bailer and the sample is slowly poured into a new, disposable plastic cup. Groundwater parameter data are then collected from the groundwater in the cup using the required unit. For pH, conductivity, and temperature, a Hanna Instruments Model 991300 portable meter is utilized. This unit is periodically calibrated and maintained in accordance with the unit’s operations manual by field personnel. Prior to data collection, the unit is properly decontaminated to prevent cross‐contamination. The unit is decontaminated between each sample. The procedure used for sample measurement involves lowering the meter’s probe into the new, disposable cup containing the groundwater sample to be measured and slowly stirring the probe to force groundwater across the probe’s membrane. The measurements displayed by the meter are then recorded. For dissolved oxygen concentration measurements, a YSI® Model 55 Handheld Dissolved Oxygen System is utilized. This unit is periodically calibrated and maintained in accordance with the unit’s Page 8 of 8 operations manual by field personnel. Prior to data collection, the unit is properly decontaminated to prevent cross‐contamination. The unit is decontaminated between each sample. The procedure used for sample measurement involves adjusting the unit for the correct altitude where the sampling will take place and adjusting the reported units desired. Once this is done, the unit’s probe is inserted into the groundwater sample to be measured and the probe is slowly stirred to force the groundwater across the probe’s membrane. The measurements displayed by the unit are then recorded. For turbidity measurements, a Hach 2100P Portable Turbidity meter or equal equivalent is utilized. The unit is calibrated prior to use in accordance with the unit’s operations manual by field personnel. Groundwater samples are collected in glass containers for measurement by the instrument. The glass containers are washed with bottled‐water between each measurement collection. Once the sample is collected and inserted into the instrument, the measurements displayed by the instrument are then recorded. APPENDIX B Terraquest Environmental Consultants, P.C. 100 E Ruffin St, Mebane, NC 27302 (919) 563-9091 Page 1 of 8 CHRONOLOGICAL SITE HISTORY SPRINGS ROAD GAS HOUSE 3360 SPRINGS ROAD NORTHEAST HICKORY, NORTH CAROLINA NCDWM-UST Incident No. 12328 Facility ID No. 0-007758 April 26, 1994 Quality closed the UST system at the site. The UST system consisted of one 12,000 gallon, one 8,000 gallon, and one 6,000 gallon gasoline UST. Approximately 39 tons of petroleum contaminated soil was excavated and disposed of offsite. May 24, 1994 Turner submitted the UST Closure, Site Check, and Initial Abatement Report. June 27, 1994 The NCDWQ issued Quality an NORR requesting compliance with the release response and corrective action requirements of Title 15A NCAC 2N. July 5, 1994 Turner submitted the Initial Site Characterization Report. The report summarized the site assessment activities in order to comply with regulations under Title 15A NCAC 2N .0704. Analytical results from soil samples collected from test pits and soil borings revealed that petroleum impacted soil was in contact with groundwater. August 10, 1994 Turner supervised the installation of four Type II groundwater monitoring wells (MW1 - MW4). These wells were installed to delineate groundwater impact for the development of a Comprehensive Site Assessment (CSA). LNAPL was detected in monitoring well MW3 during installation. August 24, 1994 Turner personnel initiated free product recovery efforts. November 1, 1994 Turner submitted a letter to the NCDWQ requesting additional time to complete the CSA. November 10, 1994 Turner personnel supervised the installation of two Type II wells (MW5 and MW7) and one Type III well (MW6). December 2, 1994 The NCDWQ issued Quality an NOV in response to the November 1, 1994 letter. The NOV was directed at the detection of LNAPL and specified that free product recovery efforts should continue and Quality should submit quarterly free product recovery reports. Terraquest Environmental Consultants, P.C. 100 E Ruffin St, Mebane, NC 27302 (919) 563-9091 Page 2 of 8 December 8, 1994 Turner personnel supervised the installation of one Type II groundwater monitoring well (MW8). January 1995 Turner submitted the first Free Product Recovery Report for the facility. The report detailed recovery efforts since the installation of a passive skimming system in monitoring well MW3 on August 24, 1994. April 1995 Turner submitted a Comprehensive Site Assessment Report to the NCDWQ. May 1995 Turner submitted the second Free Product Recovery Report for the facility. September 1995 Turner submitted the third Free Product Recovery Report for the facility. January 11, 1996 The NCDWQ issued Quality a NOV siting an incomplete CSA. Deficiencies in the CSA were primarily related to a surrounding potable well survey which did not show potable wells within a 1,500' radius of the site. The NCDWQ also requested the installation of a monitoring well in the vicinity of the septic field to determine if the field could be acting as a preferential pathway for the migration of contaminants. January 31, 1996 Tuner personnel supervised the installation of two Type II groundwater monitoring wells (MW9 - MW10). Monitoring well MW9 was installed at the request of the NCDWQ, and MW10 was installed to provide better plume definition in the upgradient direction. February 1996 Turner submitted the fourth Free Product Recovery Report for the facility. March 6, 1996 Turner personnel conducted a more comprehensive receptor survey. The primary goal of the receptor survey was to locate any potable wells, surface water bodies, or other potentially sensitive receptors within 1,500 feet downgradient of the contamination. Eighteen (18) potable wells were identified within the immediate vicinity of the site. April 1996 Turner submitted a CSA Addendum. The CSA Addendum detailed the installation and sampling of two additional groundwater monitoring wells and results of the receptor survey. April 3-4, 1996 Turner performed a 24-hour groundwater pumping test at the site. The purpose of the test was to determine aquifer parameters for the design of a groundwater treatment system. Terraquest Environmental Consultants, P.C. 100 E Ruffin St, Mebane, NC 27302 (919) 563-9091 Page 3 of 8 May 1996 Turner submitted the fifth Free Product Recovery Report for the facility. This report also presented revised casing elevation data from the groundwater monitoring wells. The wells were resurveyed because an error in the previous survey was suspected. July 18, 1996 The NCDWQ issued a site priority ranking to Quality. The site priority ranking was brought about to address the continued solvency of the Leaking Petroleum UST Trust Fund. The site was ranked “B” indicating high priority status. July 1996 Turner submitted the sixth Free Product Recovery Report for the facility. August 7, 1996 Turner personnel conducted an SVE test at the site. The purpose of the test was to determine the suitability of SVE. August 8, 1996 The NCDWQ issued Quality an NORR indicating that the CSA Addendum was complete and that a CAP should be prepared. September 1996 Turner submitted the first Groundwater Monitoring Report for the facility. The report detailed the analytical results of the sampling of monitoring wells MW1 - MW10 on August 8, 1996. January 1997 Turner submitted a Groundwater Monitoring Report detailing a November 11, 1996 sampling of monitoring wells MW1 – MW10. October/November 1997 The soil and groundwater remediation system was installed. November 17, 1997 The remediation system was started. Three of the five recovery wells, RW1, RW2, and RW3, were turned on initially. February 1998 Turner submitted a Groundwater Monitoring Report documenting the May 12, 1997 and the August 25, 1997 sampling events. March of 1998 The pump for recovery well RW4 was turned on. April of 1998 The pump in well RW5 was turned on. October 9, 1998 Turner submitted an Active Remediation Monitoring Report documenting sampling events on April 29, 1998 and on July 28, 1998. January 7, 1999 Turner submitted an Active Remediation Monitoring Report documenting the October 26, 1998 sampling event. March 17, 1999 Turner submitted an Active Remediation Monitoring Report documenting the February 9, 1999 sampling event. Terraquest Environmental Consultants, P.C. 100 E Ruffin St, Mebane, NC 27302 (919) 563-9091 Page 4 of 8 July 27, 1999 Turner submitted an Active Remediation Monitoring Report documenting the June 21, 1999 sampling event. March 14, 2000 Turner submitted an Active Remediation Monitoring Report documenting the January 28, 2000 sampling event. May 24, 2000 At the NCDWM-UST’s request, monitoring well RW5 was turned off. July 26, 2000 Turner submitted an Active Remediation Monitoring Report documenting the June 21, 2000 sampling event. February 23, 2001 Terraquest submitted an Active Remediation Monitoring Report documenting the December 21, 2000 sampling event. July 25, 2001 Terraquest personnel sampled monitoring wells MW1, MW2, MW5 - MW11, and potable wells, PW3 and PW5 March 1, 2002 Terraquest submitted an Active Remediation Monitoring Report documenting the January 29, 2002 sampling event. August, 2002 Terraquest submitted a System Enhancement Recommendation Report to the NCDWM-UST. September 10, 2002 Terraquest submitted an Active Remediation Monitoring Report documenting the July 24, 2002 sampling event. October 10, 2002 The NCDWM-UST issued an NORR requesting the completion of a bedrock assessment CAP. February 5, 2003 Terraquest submitted a Corrective Action Plan for Bedrock Contamination. February 7, 2003 Terraquest submitted an Active Remediation Monitoring Report documenting the January 27, 2003 sampling event. March 3, 2003 The NCDWM-UST approved the bedrock CAP submitted by TerraQuest. March 5, 2003 In an NORR, the NCDWM-UST requested that the SVE portion of the remediation system be shut off. August 4 – 8, 2003 Terraquest personnel supervised the installation of remediation equipment to target bedrock contamination. August 28, 2003 Terraquest submitted an Active Remediation Monitoring Report documenting the July 24, 2003 sampling event. Terraquest Environmental Consultants, P.C. 100 E Ruffin St, Mebane, NC 27302 (919) 563-9091 Page 5 of 8 November 6, 2003 Terraquest personnel supervised the advancement of five soil borings (CS1 through CS5) to determine if active soil remediation was still required. January 29, 2004 Terraquest submitted an Active Remediation Monitoring Report documenting the January 8, 2004 sampling event. August 11, 2004 Terraquest submitted an Active Remediation Monitoring Report documenting the July 27, 2004 sampling event. November 4, 2004 The NCDWM-UST sent Quality an NORR that informed Quality that with the passing of Session Law 2004-124 the release incident at the Springs Road Gas House did not require further assessment or corrective action at this time. January 28, 2005 After conducting a groundwater sampling event, Terraquest personnel shut off the remediation system at the site in accordance with the 11/4/04 NORR, February 22, 2005 Terraquest submitted an Active Remediation Monitoring Report documenting the January 28, 2005 sampling event. May 10, 2007 Due to a drop in the risk ranking required for directed work, the NCDWM-UST issued Quality an NORR requesting a groundwater sampling event. July 20, 2007 Terraquest personnel conducted a groundwater sampling event at the site. August 2007 Terraquest submitted a Groundwater Monitoring Report documenting the July 20, 2007 event. September 6, 2007 Following review of the August 2007 Report, the NCDWM-UST issued an NORR that requested that the remediation system be re-activated. September 12, 2007 Terraquest requested approval of costs associated with restarting the remediation system and conducting a groundwater monitoring event. October 2007 The NCDWM-UST granted pre-approval of the restart costs. November 2007 Following repairs the groundwater treatment system was restarted. (Recall that soil cleanup has been deemed complete) January 24, 2008 Terraquest personnel conducted a groundwater monitoring event at the site. Terraquest Environmental Consultants, P.C. 100 E Ruffin St, Mebane, NC 27302 (919) 563-9091 Page 6 of 8 July 14, 2008 Terraquest personnel conducted a groundwater monitoring event at the site. January 14, 2009 Terraquest personnel conducted a groundwater monitoring event at the site. July 20, 2009 Terraquest personnel conducted a groundwater monitoring event at the site. January 5, 2010 Terraquest personnel conducted a groundwater monitoring event at the site. March 4, 2010 The air compressor for the remediation system is found broken leaving the treatment system off. March 11, 2010 The NCDWM-UST issues an acknowledgement of report receipt correspondence stating that the treatment system should be left off. April 5, 2010 Field personnel secure the treatment system for indefinitely being off. A subcontractor vacuums all water out of the system. July 9, 2010 Terraquest personnel conducted a groundwater monitoring event at the site. January 3, 2011 Terraquest personnel conducted a groundwater monitoring event at the site. February 14, 2011 The NCDWM-UST issued an NORR requesting re-activation of the pump and treat system. April 4, 2011 The groundwater system was restarted. Groundwater from the bedrock and phreatic aquifers was recovered for treatment. July 28, 2011 Terraquest personnel conducted a groundwater monitoring event at the site. August 24, 2012 During a site visit to perform system maintenance, the EOS for the groundwater remediation system was found to be damaged by an electrical surge and the system had turned off. Following discussion with the NCDWM-UST Incident Manager, the system was left off. January 24, 2012 Terraquest personnel conducted a groundwater monitoring event at the site. Terraquest Environmental Consultants, P.C. 100 E Ruffin St, Mebane, NC 27302 (919) 563-9091 Page 7 of 8 July 31, 2012 Terraquest personnel conducted a groundwater sampling event at the site. January 7, 2013 Terraquest personnel conducted a groundwater sampling event at the site. July 29, 2013 Terraquest personnel conducted a groundwater sampling event at the site. January 27, 2014 Terraquest personnel conducted a groundwater sampling event at the site. July 24, 2014 Terraquest personnel conducted a groundwater sampling event at the site. January 7, 2015 Terraquest personnel conducted a groundwater sampling event at the site. July 22, 2015 Terraquest personnel conducted a groundwater sampling event at the site. January 14, 2016 Terraquest personnel conducted a groundwater sampling event at the site. July 26, 2016 Terraquest personnel conducted a groundwater sampling event at the site. January 16, 2017 Terraquest personnel conducted a groundwater sampling event at the site. July 31, 2017 Terraquest personnel conducted a groundwater sampling event at the site. February 13, 2018 Terraquest personnel conducted a groundwater sampling event at the site. August 22, 2018 Terraquest personnel conducted a groundwater sampling event at the site. February 20, 2019 Terraquest personnel conducted a groundwater sampling event at the site. August 26, 2019 Terraquest personnel conducted a groundwater sampling event at the site. Terraquest Environmental Consultants, P.C. 100 E Ruffin St, Mebane, NC 27302 (919) 563-9091 Page 8 of 8 February 5, 2020 Terraquest personnel conducted a groundwater sampling event at the site. September 3, 2020 Terraquest personnel conducted a groundwater sampling event at the site. February 1, 2021 Terraquest personnel conducted a groundwater sampling event at the site. August 23, 2021 Terraquest personnel conducted a groundwater sampling event at the site. February 8, 2022 Terraquest personnel conducted a groundwater sampling event at the site. October 4, 2022 Terraquest personnel conducted a groundwater sampling event at the site. February 8, 2023 Terraquest personnel conducted a groundwater sampling event at the site. APPENDIX C Casing Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to WaterWellElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationMW1100.00 19.65 80.35 20.56 79.44 16.80 83.20 18.70 81.30 19.37 80.63 17.83 82.17 18.35 81.65 20.97 79.03 MW2 96.13 16.34 79.79 16.44 79.69 13.67 82.46 15.41 80.72 15.4 80.73 14.36 81.77 14.95 81.18 17.31 78.82MW399.67 20.70 *78.97 22.42 *77.25 17.81 *81.86 18.08 *81.59 23.61 *76.06 19.15 *80.52 18.07 *81.60 20.51 *79.16MW4102.97 22.49 80.48 23.65 79.32 20.27 82.70 21.60 81.37 22.93 80.04 21.02 81.95 21.00 81.97 23.70 79.27 MW5 98.92 18.83 80.09 19.65 79.27 16.29 82.63 17.95 80.97 18.43 80.49 17.25 81.67 16.97 81.95 19.60 79.32MW696.20 17.26 78.94 17.88 78.32 14.61 81.59 16.33 79.87 16.38 79.82 15.29 80.91 15.81 80.39 18.19 78.01MW796.97 16.80 80.17 17.75 79.22 14.27 82.70 15.82 81.15 16.08 80.89 14.70 82.27 15.27 81.70 17.76 79.21 MW8 93.71 13.92 79.79 14.25 79.46 11.11 82.60 13.03 80.68 12.19 81.52 11.47 82.24 12.53 81.18 15.77 77.94MW9100.44 20.06 80.38 21.13 79.31 17.84 82.60 19.17 81.27 20.43 80.01 18.66 81.78 18.56 81.88 21.18 79.26MW10101.09 20.63 80.46 21.78 79.31 18.39 82.70 19.76 81.33 21.14 79.95 19.20 81.89 19.18 81.91 21.86 79.23 Casing Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to WaterWellElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationMW1100.00 20.95 79.05 20.88 79.12 22.71 77.29 22.10 77.90 25.73 74.27 25.25 74.75 25.92 74.08 26.67 73.33MW296.13 16.98 79.15 17.38 78.75 18.67 77.46 18.44 77.69 21.77 74.36 21.20 74.93 21.70 74.43 23.00 73.13MW399.67 19.90 *79.77 21.71 *77.96 21.90 *77.77 *-*-*-25.40 74.27 25.03 74.64MW3A99.83 ---------------- MW4 102.97 24.28 78.69 20.80 82.17 24.28 78.69 well dry -well dry -well dry -24.90 78.07 well dry -MW5 98.92 19.88 79.04 20.13 78.79 21.51 77.41 21.59 77.33 24.54 74.38 23.80 75.12 24.28 75.64 25.80 73.12MW696.20 17.95 78.25 18.36 77.84 19.47 76.73 21.17 75.03 22.30 73.90 21.82 74.38 21.90 74.30 23.90 72.30 MW7 96.97 17.99 78.98 17.89 79.08 19.83 77.14 18.81 78.16 22.40 74.57 21.82 75.15 23.00 73.97 23.40 73.57MW893.71 13.89 79.82 14.74 78.97 15.57 78.14 15.73 77.98 18.93 74.78 18.49 75.22 18.47 75.24 20.55 73.16MW9100.44 21.80 78.64 20.26 80.18 23.31 77.13 23.10 77.34 25.75 74.69 25.24 75.20 25.77 74.67 25.76 74.68 MW10 101.09 22.59 78.50 22.38 78.71 24.10 76.99 24.33 76.76 26.67 74.42 26.08 75.01 27.85 73.24 27.61 73.48MW1196.44 --------25.23 71.21 22.91 73.53 23.75 72.69 24.40 72.04 Casing Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to WaterWellElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationMW1100.00 24.40 75.60 15.75 84.25 19.57 80.43 19.40 80.60 18.83 81.17 21.86 78.14 25.32 74.68 25.14 74.86 MW2 96.13 20.01 76.12 12.86 83.27 16.73 79.40 16.31 79.82 15.19 80.94 18.44 77.69 21.37 74.76 21.29 74.84MW399.67 25.12 74.55 15.64 84.03 --20.32 79.35 18.51 81.16 21.43 78.24 24.86 74.81 24.90 74.77MW3A99.83 25.40 74.43 15.84 83.99 21.55 78.28 20.25 79.58 18.74 81.09 21.62 78.21 25.01 74.82 -- MW4 102.97 well dry -18.90 84.07 23.20 79.77 22.58 80.39 21.99 80.98 24.23 78.74 24.91 78.06 DRY DRY MW5 98.92 23.37 75.55 15.36 83.56 19.95 78.97 19.12 79.80 17.90 81.02 20.99 77.93 24.14 74.78 24.00 74.92MW696.20 22.03 74.17 13.62 82.58 17.24 78.96 17.29 78.91 17.37 78.83 ----22.02 NA MW7 96.97 21.05 75.92 13.24 83.73 16.05 80.92 16.50 80.47 15.80 81.17 ----18.42 NAMW893.71 16.75 76.96 11.73 81.98 12.86 80.85 13.86 79.85 13.10 80.61 16.01 77.70 18.52 75.19 25.58 68.13MW9100.44 25.38 75.06 16.55 83.89 20.56 79.88 20.14 80.30 19.41 81.03 22.14 78.30 25.75 74.69 26.29 74.15MW10101.09 26.30 74.79 17.50 83.59 21.62 79.47 20.73 80.36 20.10 80.99 23.29 77.80 26.58 74.51 23.14 77.95MW1196.44 22.49 73.95 14.30 82.14 15.88 80.56 17.00 79.44 17.20 79.24 18.91 77.53 23.53 72.91 21.35 75.09MW1296.13 19.99 76.14 12.92 83.21 16.79 79.34 16.44 79.69 15.15 80.98 18.54 77.59 21.38 74.75 22.76 73.37MW1397.87 21.94 75.93 14.64 83.23 18.10 79.77 17.75 80.12 17.53 80.34 19.79 78.08 --22.97 NAMW1497.70 21.93 75.77 17.38 80.32 18.24 79.46 17.84 79.86 17.73 79.97 19.97 77.73 --25.12 NAMW15100.12 25.03 75.09 16.21 83.91 22.32 77.80 20.00 80.12 20.75 79.37 20.78 79.34 24.03 76.09 25.32 74.80 Casing Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to WaterWellElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationMW1100.00 25.83 74.17 21.74 78.26 21.43 78.57 19.46 80.54 22.51 77.49 22.55 77.45 22.40 77.60 21.42 -78.58 MW2 96.13 21.61 74.52 18.16 77.97 18.36 77.77 16.28 79.85 18.71 77.42 18.98 77.15 18.36 77.77 17.83 -78.30MW399.67 dry dry 21.35 78.32 21.78 77.89 19.13 80.54 22.09 77.58 22.16 77.51 22.05 77.62 21.01 -78.66MW3A99.83 26.15 73.68 21.92 77.91 22.19 77.64 19.33 80.50 22.32 77.51 22.36 77.47 22.06 77.77 21.22 -78.61 MW5 98.92 24.99 73.93 20.58 78.34 21.00 77.92 18.79 80.13 21.48 77.44 21.65 77.27 21.27 77.65 20.50 -78.42MW696.20 22.37 73.83 ------19.46 76.74 --8.85 87.35 18.71 -77.49MW893.71 18.56 75.15 15.72 77.99 14.26 79.45 14.04 79.67 15.85 77.86 16.54 77.17 15.23 78.48 15.26 -78.45 MW9 100.44 dry dry 22.37 78.07 22.37 78.07 19.79 80.65 23.04 77.40 22.93 77.51 23.18 77.26 21.88 -78.56MW10101.09 27.51 73.58 23.18 77.91 23.23 77.86 20.40 80.69 23.80 77.29 23.60 77.49 23.98 77.11 22.54 -78.55MW1196.44 23.21 73.23 20.26 76.18 19.33 77.11 18.30 78.14 19.04 77.40 20.77 75.67 20.72 75.72 20.19 -76.25 MW12 96.13 21.60 74.53 18.33 77.80 17.88 78.25 16.44 79.69 18.54 77.59 19.08 77.05 18.39 77.74 17.91 -78.22MW1397.87 23.14 74.73 ------20.90 76.97 ----20.09 -77.78MW1497.70 23.61 74.09 ------20.74 76.96 ----19.51 -78.19 MW15 100.12 25.86 74.26 ------24.47 75.65 ----21.30 -78.82MW16102.29 28.67 73.62 24.40 77.89 24.45 77.84 21.54 80.75 24.98 77.31 24.80 77.49 25.26 77.03 23.75 -78.54 1/19/03 1/24/12 7/31/121/14/09 7/20/09 1/5/10 7/9/10 1/13/11 HISTORICAL GROUNDWATER ELEVATION DATA 4/29/98 7/24/016/21/99 1/27/00 6/21/00 7/28/98 2/9/99 1/29/02 7/23/0212/20/00 Incident Name: Springs Rd. Gas House Incident No. 12328 10/26/987/31/96 11/18/96 5/12/97 8/25/97 2/13/98 7/14/087/23/03 1/7/04 7/27/04 1/27/05 7/19/07 1/24/08 7/28/11 Page 1 of 2 HISTORICAL GROUNDWATER ELEVATION DATAIncident Name: Springs Rd. Gas House Incident No. 12328 Casing Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to WaterWellElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationMW1100.00 23.94 76.06 18.17 81.83 18.09 81.91 19.36 80.64 20.76 79.24 21.15 78.85 --18.80 81.20 MW2 96.13 19.90 76.23 14.63 81.50 14.60 81.53 16.17 79.96 16.88 79.25 17.84 78.29 --15.48 80.65MW399.67 23.40 76.27 17.75 81.92 17.79 81.88 18.92 80.75 20.32 79.35 20.79 78.88 18.63 81.04 18.40 81.27MW3A99.83 23.62 76.21 18.03 81.80 17.99 81.84 19.13 80.70 20.53 79.30 20.99 78.84 18.81 81.02 18.65 81.18 MW5 98.92 22.62 76.30 16.40 82.52 17.28 81.64 18.63 80.29 19.46 79.46 20.38 78.54 --18.03 80.89MW696.20 --10.12 86.08 36.93 59.27 12.64 83.56 17.68 78.52 8.14 88.06 13.28 82.92 16.29 79.91MW893.71 16.84 76.87 12.48 81.23 12.15 81.56 14.04 79.67 13.78 79.93 15.62 78.09 ---- MW9 100.44 24.40 76.04 19.16 81.28 18.75 81.69 19.50 80.94 21.35 79.09 21.50 78.94 ----MW10 101.09 25.20 75.89 19.83 81.26 19.43 81.66 20.08 81.01 21.98 79.11 22.10 78.99 ----MW11 96.44 20.76 75.68 17.28 79.16 18.88 77.56 16.94 79.50 17.36 79.08 18.93 77.51 ---- MW12 96.13 19.95 76.18 14.75 81.38 14.70 81.43 16.32 79.81 16.91 79.22 17.96 78.17 15.35 80.78 15.63 80.50MW1397.87 --15.91 81.96 15.97 81.90 17.48 80.39 18.27 79.60 19.13 78.74 16.65 81.22 16.81 81.06MW1497.70 --16.19 81.51 16.22 81.48 17.62 80.08 18.50 79.20 19.33 78.37 16.97 80.73 17.00 80.70MW15100.12 --18.11 82.01 17.84 82.28 18.92 81.20 20.23 79.89 20.42 79.70 18.90 81.22 18.48 81.64MW16102.29 26.40 75.89 21.10 81.19 20.66 81.63 21.24 81.05 23.30 78.99 23.30 78.99 ---- Casing Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Well Elevation Water Elevation Water Elevation Water Elevation Water Elevation Water Elevation Water Elevation Water Elevation Water ElevationMW1100.00 22.40 77.60 19.54 80.46 ------------MW2 96.13 18.60 77.53 16.00 80.13 ------------ MW3 99.67 22.00 77.67 19.55 80.12 20.01 79.66 18.00 81.67 17.70 81.97 16.15 83.52 ----MW3A 99.83 22.22 77.61 19.53 80.30 20.25 79.58 18.20 81.63 15.10 84.73 16.32 83.51 ----MW5 98.92 21.39 77.53 18.80 80.12 ------------ MW6 96.20 19.28 76.92 22.00 74.20 ------------MW12 96.13 18.65 77.48 16.24 79.89 16.57 79.56 15.00 81.13 12.25 83.88 13.65 82.48 13.62 82.51 12.20 83.93MW1397.87 20.00 77.87 17.55 80.32 17.94 79.93 16.25 81.62 13.46 84.41 14.73 83.14 14.92 82.95 13.42 84.45 MW14 97.70 20.23 77.47 17.71 79.99 18.20 79.50 16.48 81.22 13.65 84.05 14.90 82.80 15.10 82.60 13.60 84.10MW15100.12 21.70 78.42 19.42 80.70 19.52 80.60 18.72 81.40 15.05 85.07 15.70 84.42 16.70 83.42 14.83 85.29 Casing Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to Water Depth to WaterWellElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationWaterElevationMW1296.13 11.65 84.48 14.29 81.84 16.77 79.36 16.05 80.08 14.57 81.56 MW13 97.87 12.74 85.13 14.19 83.68 18.06 79.81 41.88 55.99 15.83 82.04MW1497.70 12.89 84.81 15.70 82.00 18.36 79.34 17.69 80.01 16.15 81.55MW15100.12 14.13 85.99 17.19 82.93 20.31 79.81 19.43 80.69 17.89 82.23 1. All units in feet.2. Elevations referenced to arbitrary datum of 100.00 feet at MW1.3. * Indicates free product is present. Measurement should not be used to represent the potentiometric surface.4. - indicates no data collected during monitoring event. 2/1/21 8/23/21 2/8/22 10/4/22 2/8/23 1/14/16 7/26/161/7/13 7/29/13 1/27/14 7/24/14 1/7/15 7/22/15 2/5/20 9/8/201/16/17 7/31/17 2/13/18 8/22/18 2/20/19 8/26/19 Page 2 of 2 Groundwater Analytical Data History for MW12Springs Road Gas House, Hickory, NC Quality Oil Company, LLC Date U.S. EPA Method BenzeneTolueneEthylbenzeneTotal XylenesMTBEIsopropyl ether (IPE)ChloroformNaphthalene2-Butanone (MEK)C5-C8 AliphaticsC9-C12 Aliphatics C9-C10 AromaticsLead1/19/2003 601/602+MtBE+IPE*<1.0 <5.0 <1.0 1.7 22 <5.0 1 <5.0 -<100 <100 <100 <5.07/24/2003 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 22 <5.0 1.8 <5.0 -----1/8/2004 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 5.9 <5.0 <1.0 <5.0 ----- 7/27/2004 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5.0 <1.0 <5.0 -----1/28/2005 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5.0 <1.0 <5.0 ----- 7/20/2007 6210D+MtBE+IPE <1.0 <5.0 <1.0 <3.0 2.8 <1.0 <5.0 <5.0 -----1/24/2008 6210D+MtBE+IPE <1.0 <5.0 <1.0 <3.0 29 4.0 <5.0 <5.0 ----- 7/14/2008 6210D+MtBE+IPE <1 <5 <1 <3 16 1.8 <5 <5 -----1/14/2009 6200B <1 <5 <1 <3 19 1.8 <5 <5 ----- 7/20/2009 6200B <1 <5 <1 <3 1.9 <1 <5 <5 -----1/5/2010 6200B <0.060 <0.060 <0.050 <0.14 3 0.20 <0.070 <0.34 ----- 7/9/2010 6200B <0.11 <0.11 <0.11 <0.32 3.2 1.7 <0.18 <0.11 -----1/3/2011 6200B <0.11 <0.11 <0.11 <0.32 8.5 4.3 <0.18 0.19 J ----- 7/28/2011 6200B <0.13 <0.13 <0.15 <0.30 6.8 1.9 <0.16 <0.10 -----1/24/2012 6200B <1 <5 <1 <3 15 <1 <5 <5 ----- 7/31/2012 6200B <1 <5 <1 <3 7 <1 <5 <5 -----1/7/2013 6200B <1 <5 <1 <3 7.3 <1 <5 <5 ----- 7/29/2013 6200B <0.119 <0.0570 <0.0920 <0.298 7.28 <0.0920 <0.172 <0.0940 -----1/27/2014 6200B <0.119 <0.0570 <0.0920 <0.298 4.84 <0.0920 <0.172 <0.0940 ----- 7/24/2014 6200B <0.119 <0.0570 <0.0920 <0.298 8.62 <0.0920 <0.172 <0.0940 -----1/7/2015 6200B <0.119 <0.0570 <0.0920 <0.298 24.9 <0.0920 <0.172 <0.0940 -----7/22/2015 6200B <0.119 <0.0570 <0.0920 <0.298 36.2 <0.0920 <0.172 <0.0940 -----1/14/2016 6200B <0.119 <0.0570 <0.0920 <0.298 190 <0.0920 <0.172 <0.0940 -----7/27/2016 6200B <0.119 <0.0570 <0.0920 <0.298 124 <0.0920 <0.172 <0.0940 -----1/16/2017 6200B 1.5 <0.285 <0.460 <0.900 729 1.55 <0.860 <0.470 -----7/31/2017 6200B <0.595 <0.285 <0.460 <0.900 434 1.1 <0.860 <0.470 -----2/13/2018 6200B <0.119 <0.0570 <0.0920 <0.180 464 1.65 0.22 <0.0940 1.04 ----8/22/2018 6200B < 0.595 < 0.285 < 0.460 < 0.61 326 < 0.460 < 0.800 < 0.470 <---- 2/20/2019 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 119 < 0.0920 0.73 < 0.0940 <----8/26/2019 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 88.3 < 0.0920 3.91 < 0.0940 <---- 2/5/2020 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 116 < 0.0920 3.16 < 0.0940 <----9/3/2020 6200B < 0.388 < 0.366 < 0.355 < 0.359 2.22 < 0.359 < 0.382 < 0.256 <---- 2/1/2021 6200B < 0.380 < 0.410 < 0.500 < 1.60 < 0.740 < 0.700 < 0.600 < 1.00 <----8/23/2021 6200B < 0.380 < 0.410 < 0.500 < 1.60 4.08 < 0.700 0.874 < 1.00 <---- 2/8/2022 6200B < 0.130 < 0.410 < 0.500 < 1.60 9.37 < 0.200 2.32 < 1.00 <----10/4/2022 6200B < 0.130 < 0.410 < 0.500 < 1.60 < 0.220 < 0.200 <<<---- 2/8/2023 6200B < 0.130 < 0.410 < 0.500 < 1.60 16.3 < 0.200 1.01 < 3.00 <----1 600 600 500 20 70 70 6 4,000 400 700 200 15 Notes:1. All results in µg/L.2. Bold denotes a detected concentration, shading denotes a concentration in excess of 2L standards. 3. Only selected analytes are listed. Analytical reports contain a complete list of analytes and results.4. - = not sampled, < = less than method detection limit. 5. TCCs revised 2/26/01 so that TCCs calculated in CAP do not exceed GCLs established by RBCA.6. * The 2L Standards listed for the C9-C12 Aliphatic and C9-C10 Aromatic carbon fraction classes are actually the C9-C18 Aliphatic and C9-C22 Aromatic fraction class 2L Standards. 2L Standards Date U.S. EPA Method BenzeneTolueneEthylbenzeneTotal XylenesMTBEIsopropyl ether (IPE)Ethylenedibromide (EDB)n-Butylbenzenesec-Butylbenzeneo-ChlorotolueneChloroform1,1-DichloroethaneIsopropylbenzene4-IsopropyltolueneNaphthalenen-Propylbenzene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneC5-C8 AliphaticsC9-C12 Aliphatics C9-C10 AromaticsLead1/19/2003 601/602+MtBE+IPE*9.8 <5.0 <1.0 12.2 78 <5.0 <0.010 ---3.1 ---<5.0 -<1.0 <1.0 620 230 <100 <5.07/24/2003 601/602+MtBE+IPE 38 <5.0 2.2 70 420 13 <1.0 ---11 ---<5.0 -<1.0 <1.0 ----1/8/2004 601/602+MtBE+IPE 2.6 <5.0 <1.0 4.7 150 <5.0 <1.0 ---2.3 ---<5.0 -<1.0 <1.0 ----7/27/2004 601/602+MtBE+IPE <1.0 <5.0 <1.0 1.1 180 6 <1.0 ---4.6 ---<5.0 -<1.0 <1.0 ----1/28/2005 601/602+MtBE+IPE <1.0 <5.0 <1.0 2.6 170 5.5 <1.0 ---4.0 ---<5.0 -<1.0 <1.0 ----7/20/2007 6210D+MtBE+IPE <1.0 <5.0 3.7 32.7 43 <1.0 <1.0 ---<5.0 ---5.5 -7.6 2.1 ----1/24/2008 6210D+MtBE+IPE 4 <5.0 9.7 250 42 1.4 <1.0 -1.3 -<5.0 -6.3 -83 3.5 46 36 ----7/14/2008 6210D+MtBE+IPE <1 <5 <1 42.6 90 1.8 --<1 -<5 -<1 -16 <1 4 5.4 ----1/14/2009 6200B <1 <5 <1 3.2 350 <1 --<1 -<5 4.4 <1 -<5 <1 <1 <1 ----7/20/2009 6200B <1 <5 <1 9.6 110 2.8 --<1 -<5 <1 <1 -<5 <1 <1 <1 ---- 1/5/2010 6200B 0.096 <0.060 <0.050 7.87 135 2 <0.090 -<0.10 0.055 0.95 <0.070 0.16 -4 <0.050 0.58 0.45 ----7/9/2010 6200B 0.49 0.12 J 0.36 J 46.78 523 2 <0.10 0.44 J 0.39 J <0.11 0.41 J <0.14 2 -22.3 J 0.32 J 1.6 0.91 ---- 1/3/2011 6200B <1.1 <1.1 1.2 J 48.8 435 <1.2 -<1 <1 <1.1 <1.8 <1.2 3.5 J -86.9 <1.1 2.7 J <1.1 ----7/28/2011 6200B 0.66 <0.13 <0.15 10.27 260 1 -<0.10 <0.10 <0.11 1 <0.12 0.12 J -4.1 <0.11 0.53 0.41 ---- 1/24/2012 6200B <1 <5 <1 11.7 390 <1 <1 <1 <1 <1 <5 <1 <1 -13 <1 <1 <1 ---- 7/31/2012 6200B <2 <10 <2 <6 680 <2 <2 <2 <2 <2 <10 <2 <2 -<10 <2 <2 <2 ---- 1/7/2013 6200B <5 <25 <5 <15 330 <5 <5 <5 <5 <5 <25 <5 <5 -<25 <5 <5 <5 ---- 7/29/2013 6200B 5.55 <0.285 <0.460 2.6 1,150 4.05 -<0.300 <0.460 -<0.860 -<0.490 -12.4 <0.325 <0.515 <0.435 ---- 1/27/2014 6200B 3.25 3.95 <0.460 2.96 1,140 <0.460 <0.900 <0.300 <0.460 <0.440 <0.860 <0.605 <0.490 -5.3 <0.325 <0.515 <0.435 ---- 7/24/2014 6200B <0.119 <0.0570 <0.0920 4.036 336 D 0.51 <0.180 <0.0600 <0.0920 <0.0880 0.43 J <0.0900 0.58 -7.44 <0.0650 <0.103 <0.0870 ---- 1/7/2015 6200B <0.119 <0.0570 <0.0920 2.186 161 0.25 J <0.180 0.81J 0.72 <0.0880 0.21 J <0.0900 2.55 0.52 49 0.27 J 0.37 J <0.0870 ---- 7/22/2015 6200B <0.119 <0.0570 <0.0920 3.866 182 D <0.0920 <0.180 <0.0600 <0.0920 <0.0880 <0.172 <0.121 2.34 <0.0890 32.5 F <0.0650 <0.103 <0.0870 ----1/14/2016 6200B 0.330 J <0.0570 <0.0920 3.736 309 D 0.56 <0.0920 0.850 J 0.69 <0.0880 0.500 J <0.121 2.09 0.300 J 32.5 <0.0650 <0.103 <0.0870 ---- 7/27/2016 6200B <0.119 <0.0570 <0.0920 2.31 95.1 <0.0920 <0.180 <0.0600 <0.0920 <0.0880 <0.172 <0.121 <0.490 <0.0890 2.47 <0.0650 <0.103 <0.0870 ----1/16/2017 6200B <0.119 <0.0570 0.67 14.5 51.6 <0.0920 <2.5 <<<0.172 <12.9 1.05 116 1.53 3.32 <0.0870 ---- 7/31/2017 6200B 0.17 <0.0570 <0.0920 8.37 110 0.24 <0.52 <<0.66 <2.28 <0.0890 29.2 0.12 <0.103 <0.0870 ---- 2/13/2018 6200B <0.119 <0.0570 <0.0920 <0.180 99.2 <0.0920 <2.98 <<<0.172 <7.74 <0.0890 63.1 0.26 0.31 0.17 ----8/22/2018 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 39.2 < 0.0920 << 0.0600 <<<<< 0.0980 < 0.0890 < 0.0940 < 0.0650 < 0.103 < 0.0870 ---- 2/20/2019 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 60.8 < 0.0920 << 0.0600 < 0.0920 << 0.160 << 0.0980 < 0.0890 < 0.0940 < 0.0650 < 0.103 < 0.0870 ----8/26/2019 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 35.7 < 0.0920 << 0.0600 <<< 0.160 << 0.0980 < 0.0890 < 0.0940 < 0.0650 < 0.103 < 0.0870 ---- 2/5/2020 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 1.54 < 0.0920 << 0.0600 < 0.0920 <0.76 <0.54 <3.73 < 0.0650 < 0.103 < 0.0870 ----9/3/2020 6200B < 0.388 < 0.366 < 0.355 < 0.359 0.6 < 0.359 << 0.342 < 0.336 <<<< 0.363 << 0.256 < 0.307 < 0.335 < 0.352 ---- 2/1/2021 6200B < 0.380 < 0.410 < 0.500 < 1.60 < 0.740 < 0.700 << 0.760 <<< 0.600 << 0.530 << 1.00 < 0.690 < 0.820 < 0.560 ---- 8/23/2021 6200B < 0.380 < 0.410 < 0.500 < 1.60 < 0.740 < 0.700 << 0.760 <<< 0.600 << 0.530 << 1.00 < 0.690 < 0.820 < 0.560 ---- 2/8/2022 6200B < 0.130 < 0.410 < 0.500 < 1.60 < 0.220 < 0.200 <<<<< 10.0 < 0.190 < 0.530 << 1.00 << 0.820 <---- 10/4/2022 6200B < 0.130 < 0.410 < 0.500 < 1.60 < 0.220 < 0.200 <<<<<<<<<<<<----2/8/2023 6200B < 0.130 < 0.410 < 0.500 < 1.60 < 0.220 < 0.200 <<<<<<<<<<<<---- 1 600 600 500 20 70 0.02 70 70 100 70 70 70 25 6 70 400 400 400 700 200 15 Notes:1. All results in µg/L. 2. Bold denotes a detected concentration, shading denotes a concentration in excess of 2L standards. 3. Only selected analytes are listed. Analytical reports contain a complete list of analytes and results. 4. - = not sampled, < = less than method detection limit. 5. Method 601/602+MtBE+IPE also included 504.1 EDB, MADEP VPH, and lead (by 3030C digestion) on the 1/19/03 event. 6. TCCs revised 2/26/01 so that TCCs calculated in CAP do not exceed GCLs established by RBCA. 7. * The 2L Standards listed for the C9-C12 Aliphatic and C9-C10 Aromatic carbon fraction classes are actually the C9-C18 Aliphatic and C9-C22 Aromatic fraction class 2L Standards. 8. "J" - Indicates an estimated value. Groundwater Analytical Data History for MW13 Springs Road Gas House, Hickory, NCQuality Oil Company, LLC 2L Standards Date U.S. EPA Method BenzeneTolueneEthylbenzeneTotal XylenesMTBEIsopropyl ether (IPE)n-Butylbenzenesec-ButylbenzeneChloroform1,2-DichloroethaneEthylenedibromide (EDB)IsopropylbenzeneMethylene ChlorideNaphthalenen-Propylbenzene1,2,3-Trichloropropane1,2,4-Trimethylbenzene1,3,5-Trimethylbenzene4-IsopropyltolueneC5-C8 AliphaticsC9-C12 Aliphatics C9-C10 AromaticsLead1/19/2003 601/602+MtBE+IPE*140 <5.0 3.3 66 75 <5.0 ---<1.0 2.4 <1.0 -5.2 -<<1.0 <1.0 <18,000 9,800 <5,000 <5.07/24/2003 601/602+MtBE+IPE 200 <25.<5.0 112 360 <25.---<1.0 <5.0 <1.0 47 36 -<<1.0 <1.0 <----1/8/2004 601/602+MtBE+IPE 22 <5.0 1.9 20.7 82 <5.0 ---<1.0 <1.0 <1.0 <5.0 <5.0 -<<1.0 <1.0 <----7/27/2004 601/602+MtBE+IPE 5 <5.0 <1.0 3.1 58 <5.0 ---2.4 <1.0 <1.0 <5.0 <5.0 -<<1.0 <1.0 <----1/28/2005 601/602+MtBE+IPE 1.7 <5.0 <1.0 1.7 78 <5.0 --1.2 4.4 <1.0 <1.0 <5.0 <5.0 -<<1.0 <1.0 <----7/20/2007 6210D+MtBE+IPE 120 <5.0 <1.0 38 140 7 --<5.0 7.1 <1.0 1.2 <5.0 7 -<2.1 <1.0 <----1/24/2008 6210D+MtBE+IPE 14 <5.0 <1.0 9 40 2.5 --<5.0 3 <1.0 <1.0 <5.0 5.1 -<<1.0 <1.0 <----7/14/2008 6210D+MtBE+IPE 23 <5 <1 11.8 39 1.8 --<5 2.3 -<1 <5 <5 -<1.4 <1 <----1/14/2009 6200B 1.1 <5 <1 <3 28 <1 --<5 <1 -<1 <5 <5 -<<1 <1 <----7/20/2009 6200B <1 <5 <1 <3 10 <1 --<5 <1 -<1 <5 <5 -<<1 <1 <----1/5/2010 6200B 0.86 <0.060 <0.050 0.6 3.9 0.13 --3.4 0.24 <0.090 <0.050 <0.52 <0.34 -<<0.10 <0.10 <----7/9/2010 6200B 9.5 0.87 0.25 J 42.39 15.4 0.50 0.76 0.38 J 3.1 0.69 0.19 J 2.1 <1 25.5 0.23 J <0.41 J 0.19 J <----1/3/2011 6200B 5 <0.11 <0.11 19.01 5.1 0.31 J 0.38 J 0.18 J 2.9 0.44 -1.1 <1 17.6 <0.11 <<0.10 <0.11 <----7/28/2011 6200B 1.2 <0.13 <0.15 0.48 10.1 0.33 J <0.10 <0.10 1.7 0.72 -<0.10 <1 0.32 J <0.11 <<0.10 <0.10 <----1/24/2012 6200B <1 <5 <1 3.4 2.6 <1 <1 <1 <5 <1 <1 <1 <5 <5 <1 <<1 <1 <----7/31/2012 6200B <1 <5 <1 5.6 2.5 <1 <1 <1 <5 <1 <1 <1 <5 <5 <1 <<1 <1 <----1/7/2013 6200B 1.7 <5 <1 7.6 2.1 <1 <1 <1 <5 <1 <1 <1 <5 12 <1 <<1 <1 <----7/29/2013 6200B 0.58 <0.0570 <0.0920 3.13 1.75 <0.0920 <0.0600 <0.0920 1.9 <0.0900 -<0.0980 -2.81 <0.0650 <<0.103 1.83 <----1/27/2014 6200B 0.73 0.1 <0.0920 3.806 1.28 <0.0920 <0.0600 <0.0920 1.06 <0.0900 <0.180 <0.0980 3 5.35 <0.0650 <1.1 <0.0870 <----7/24/2014 6200B 4.17 <0.0570 <0.0920 20.822 5.4 <0.0920 <0.0600 <0.0920 1.65 <0.0900 <0.180 2.16 <0.190 38.5 <0.0650 <<0.103 <0.0870 <----1/7/2015 6200B 1.93 <0.0570 <0.0920 14.376 2.76 <0.0920 <0.0600 <0.0920 1.38 <0.0900 <0.180 1.27 <0.190 21.2 H <0.0650 <<0.103 <0.0870 <----7/22/2015 6200B 2.78 <0.0570 <0.0920 16.476 4.23 <0.0920 <0.0600 <0.0920 2.18 <0.0900 <0.180 1.67 <0.190 28.4 F <0.0650 <<0.103 <0.0870 <----1/14/2016 6200B 1.59 <0.0570 <0.0920 17.176 1.81 <0.0920 <0.0600 <0.0920 <0.172 <0.0900 <0.180 1.06 <0.190 20.5 <0.0650 <<0.103 <0.0870 <----7/27/2016 6200B 2.8 <0.0570 <0.0920 26.1 5.15 <0.0920 <0.0600 <0.0920 1.14 <0.0900 <0.180 1.83 <0.190 21.6 <0.0650 <<0.103 <0.0870 <----1/16/2017 6200B 4.19 0.12 <0.0920 53.6 4.93 0.34 <0.0600 <0.92 <0.0900 <2.92 <49.1 <0.0650 <<0.103 <0.0870 0.37 ----7/31/2017 6200B 3.15 <0.0570 <0.0920 38 4.03 0.24 0.74 <0.76 <0.0901 <2.00 <38.5 0.1 <<0.103 <0.0870 <0.0890 ----2/13/2018 6200B 3.33 <0.0570 <0.0920 57.4 3.85 0.23 2.54 <0.76 <0.0901 <3.32 <39.5 <0.0650 <<0.103 <0.0870 <0.0890 ----8/22/2018 6200B 0.64 < 0.0570 < 0.0920 53.2 0.61 < 0.0920 1.57 <3.08 <<3.1 <14.4 < 0.0650 << 0.103 < 0.0870 1 ----2/20/2019 6200B 4.04 < 0.0570 < 0.0920 156 3.57 < 0.0920 2.82 1.72 0.91 <<7.26 <65.4 < 0.0650 << 0.103 < 0.0870 < 0.0890 ----8/26/2019 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 3.13 < 0.0920 < 0.0600 <1.12 <<< 0.0980 << 0.0940 < 0.0650 << 0.103 < 0.0870 < 0.0890 ----2/5/2020 6200B 2.05 < 0.0570 < 0.0920 93.4 4.1 < 0.0920 3.41 1.8 0.6 < 0.0900 <7.06 <85.3 < 0.0650 << 0.103 0.71 <----9/3/2020 6200B < 0.388 < 0.366 < 0.355 < 0.359 1.53 < 0.359 < 0.342 < 0.336 < 0.382 < 0.405 << 0.363 << 0.256 < 0.307 0.39 < 0.335 < 0.352 <----2/1/2021 6200B 0.594 < 0.410 < 0.500 9.88 2.48 < 0.700 < 0.760 << 0.600 0.574 <1.03 <15.2 < 0.690 << 0.820 < 0.560 <----8/23/2021 6200B < 0.380 < 0.410 < 0.500 < 1.60 2.24 < 0.700 <<< 0.600 < 0.500 << 0.530 << 1.00 <<< 0.820 <<----2/8/2022 6200B < 0.130 < 0.410 < 0.500 < 1.60 0.571 < 0.200 <<< 1.00 <<< 0.530 << 1.00 <<< 0.820 <<----10/4/2022 6200B < 0.130 < 0.410 < 0.500 < 1.60 1.1 < 0.200 <<3.64 <<<<<<<<<<----2/8/2023 6200B < 0.130 < 0.410 < 0.500 < 1.60 0.694 < 0.200 <<<<<<<<<<<<<----1 600 600 500 20 70 70 70 70 0.4 0.02 70 5 6 70 0.005 400 400 25 400 700 200 15Notes:1. All results in µg/L.2. Bold denotes a detected concentration, shading denotes a concentration in excess of 2L standards.3. Only selected analytes are listed. Analytical reports contain a complete list of analytes and results.4. - = not sampled, < = less than method detection limit. 5. Method 601/602+MtBE+IPE also included 504.1 EDB, MADEP VPH, and lead (by 3030C digestion) on the 1/19/03 event. 6. TCCs revised 2/26/01 so that TCCs calculated in CAP do not exceed GCLs established by RBCA.7. * The 2L Standards listed for the C9-C12 Aliphatic and C9-C10 Aromatic carbon fraction classes are actually the C9-C18 Aliphatic and C9-C22 Aromatic fraction class 2L Standards.8. "J" - Indicates an estimated value.9. H - The LCS data for this analytical batch was reported above the laboratory control limits. Supporting QC Data were reviewed by the Department Supervisor and QA Director. Data were determined to be valid for reporting. Groundwater Analytical Data History for MW14Springs Road Gas House, Hickory, NCQuality Oil Company, LLC 2L Standards Date U.S. EPA Method BenzeneTolueneEthylbenzeneTotal XylenesMTBEIsopropyl ether (IPE)Ethylenedibromide (EDB)AcetoneIsopropylbenzene4-IsopropyltolueneNaphthalenen-Propylbenzenen-Butylbenzenesec-Butylbenzenetert-Butylbenzene1,2,3-Trichloropropane1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneChloroform1,2-Dibromoethane1,2-DichloroehtaneMethylene Chloride4-Methyl-2-pentanone (MIBK)C5-C8 AliphaticsC9-C12 Aliphatics C9-C10 AromaticsLead1/19/2003 601/602+MtBE+IPE*<1.0 <5.0 <1.0 <2.0 <5.0 <5.0 0.49 -<1.0 <1.0 <5.0 <1.0 ----<1.0 <1.0 1.3 ---<<100 <100 <100 <5.07/24/2003 601/602+MtBE+IPE <1.0 <5.0 <1.0 <1.0 <5.0 <5.0 <1.0 -<1.0 <1.0 <5.0 <1.0 ----<1.0 <1.0 <1.0 --6.9 <----1/8/2004 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5.0 <1.0 -<1.0 <1.0 <5.0 <1.0 ----<1.0 <1.0 <1.0 --<5.0 <----7/27/2004 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5.0 <1.0 -<1.0 <1.0 <5.0 <1.0 ----<1.0 <1.0 <1.0 --<5.0 <----1/28/2005 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5.0 <1.0 -<1.0 <1.0 <5.0 <1.0 ----<1.0 <1.0 2.4 -2.1 <5.0 <----7/20/2007 6210D+MtBE+IPE 2.2 <5.0 8.3 155 11 <1.0 <1.0 -3.7 1.6 97 6.1 ----30 20 <5.0 -2.1 <5.0 <----1/24/2008 6210D+MtBE+IPE 34.0 <5.0 1.9 51 41.0 7.2 <1.0 -1.8 <1.0 29 1.7 ----3.4 3.1 <5.0 -9.4 <5.0 <----7/14/2008 6210D+MtBE+IPE 17 <5 <1 41 35 5.2 --2.1 <1 29 1.2 ---1.1 <1 1.4 <5 -8 <5 <----1/14/2009 6200B 54 62 82 390 57 7.4 --5.6 3.9 130 14 -1.1 -<1 120 48 <5 1.3 11 <5 <----7/20/2009 6200B 28 110 110 630 31 3.2 --7.8 5.6 190 20 3.5 1.6 -<1 220 72 <5 1.6 4.7 <5 <----1/5/2010 6200B 11.9 78.5 105 624 17.8 <1 <1.8 -8 <1.2 250 23.1 4.1 <2 -<5.8 235 79.7 6 <1.8 3.2 56.7 <---- 7/9/2010 6200B 45.1 2.5 J 58.5 237.5 47.5 5.1 <1 24.7 J 6.6 <1 100 14.5 2.1 J <1 -1.2 J 53.2 28.4 <1.8 <1 6.8 <10 <----1/3/2011 6200B 103 2.6 J 41.4 276.3 75.8 9.6 -<20 21.7 <1 312 33 6.5 3.1 J -2.5 J 49.2 42.6 <1.8 <1 12.2 <10 <----7/28/2011 6200B 2.9 1.2 1.9 21.3 25 1.8 -<20 <0.11 J <0.10 8.6 0.22 <0.10 <0.10 -0.6 6.1 3.2 <0.16 <2.1 <2.4 <20 <----1/24/2012 6200B <5 <25 44 232 20 <5 <5 <250 5.3 <5 42 10 <5 <5 -<1 16 55 <25 <5 <5 <25 <----7/31/2012 6200B 1.1 <5 26 45.3 11 <1 <1 <50 7.6 1 70 14 2.8 1.7 -<2.5 7.2 19 <5 <1 <1 <5 <----1/7/2013 6200B <1 <5 8.2 11.7 8.6 <1 <1 <50 2.1 <1 33 3.3 <1 <1 -<2.5 2.8 5.6 <5 <1 <1 <5 <---- 7/29/2013 6200B 1.91 2.77 35.7 89.5 5.44 <0.0920 --8.07 0.9 164 16.4 <0.0600 1.44 2.15 -25.2 17.2 <0.172 -<0.0900 -<----1/27/2014 6200B <0.119 <0.0570 3.5 1.582 6.5 0.45 <0.180 <0.352 1.49 <0.0890 80.6 3.01 1.42 <0.0920 <0.0890 <0.138 <0.103 2.23 <0.172 <0.180 <0.0900 <0.190 <----7/24/2014 6200B 2.33 4.37 32.3 168 D 12.9 1.1 <0.180 <0.352 9.17 1.28 154 D 14.7 <0.0600 1.67 <0.0890 <0.138 44.7 32.4 <0.172 <0.180 <0.0900 <0.190 <----1/7/2015 6200B 21 0.8 14.9 35.1 25.1 2.73 <0.180 <0.352 14.7 1.25 259 D 17.3 <0.0600 2.69 0.22 J <0.138 24.3 15.5 <0.172 <0.180 4.02 <0.190 <----7/22/2015 6200B 6.17 1.2 9.6 20.63 10.9 1.49 <0.180 <0.352 11.8 <0.0890 249 DF 11.3 6.06 2.51 <0.0890 <0.138 8.65 5.05 <0.172 <0.180 <0.0900 <0.190 <----1/14/2016 6200B <0.119 <0.0570 5.12 17.13 <0.169 <0.0920 <0.180 <0.352 6.64 <0.0890 90 D 10.9 <0.0600 1.47 <0.0890 <0.138 2.19 7.26 <0.172 <0.180 <0.0900 <0.190 <---- 7/27/2016 6200B 3.8 1.1 15.8 23.9 8.86 0.66 <0.180 <0.352 12.8 <0.0890 220 16.9 8.09 3 <0.0890 <0.138 13.4 5.85 <0.172 <0.180 <0.0900 <0.190 <----1/16/2017 6200B 26.2 1.47 15.6 88.4 21.6 2.46 <<11.5 2.63 131 12.2 <0.0600 <<<43.9 18.7 <0.172 <3.08 <<----7/31/2017 6200B <0.119 <0.0570 <0.0920 <0.180 0.26 <0.0920 <<<0.0980 <0.0890 <0.0940 <0.0650 <0.0601 <<<<0.103 <0.0870 <0.172 <<0.0900 <<----2/13/2018 6200B 1.03 0.6 6.33 31.2 4.29 <0.0920 <<7.48 0.82 100 8.9 5.14 <0.23 <5.99 1.52 <0.172 <<0.0900 <<----8/22/2018 6200B 1.87 < 0.0570 14.1 27.1 < 0.169 < 0.0920 << 0.352 18.2 1.76 252 20.2 8.45 <<<11.4 < 0.0870 < 0.160 <<<<----2/20/2019 6200B 1.73 < 0.0570 16.1 18.01 5.99 < 0.0920 << 0.352 21 1.38 217 23 9.34 4.77 <<16.1 < 0.0870 < 0.160 <<<0.91 ---- 8/26/2019 6200B 45 0.91 6.55 66.1 40.7 3.46 <<6.7 0.8 99.3 6.58 4.09 <<<28.3 0.94 < 0.160 <6.78 <<----2/5/2020 6200B 15.7 < 0.0570 5.57 10.95 20.2 1.93 <<11.6 <125 9.39 6.29 2.91 <<8.6 0.66 < 0.160 <2.91 <<---- 9/3/2020 6200B 34.8 0.46 2.84 38.21 26.7 3.65 <<4.59 <53.8 3.49 2.3 1.18 << 0.359 14 1.79 < 0.382 <6.21 <<----2/1/2021 6200B 16.8 < 0.410 0.876 12.1 24.5 3.19 <11.8 1.75 <17.2 1.06 0.89 <<<3.97 1.37 < 0.600 <4.71 <<----8/23/2021 6200B 25.5 < 0.410 0.658 6.89 58.2 6.09 <<0.758 <16.5 <<<<<4.53 << 0.600 <12.1 <<---- 2/8/2022 6200B 8.26 < 0.410 0.659 1.88 43.8 8.65 <<1.46 <9.57 <<<<<1.35 <<<8.51 <<----10/4/2022 6200B 0.99 < 0.410 < 0.500 < 1.60 5.6 0.248 <<5.03 <26.4 1.1 1.0 1.4 <<<<<<<<<---- 2/8/2023 6200B 0.349 < 0.410 0.776 < 1.60 3.74 < 0.200 <<5.37 <31.7 1.27 1.12 1.37 <<0.93 <<<<<<----1 600 600 500 20 70 0.02 6,000 70 200 6 70 70 70 70 NE 400 400 70 0.02 0.04 5 100 400 700 200 15Notes:1: All results in µg/L.2. Bold denotes a detected concentration, shading denotes a concentration in excess of 2L standards.3. Only selected analytes are listed. Analytical reports contain a complete list of analytes and results.4. - = not sampled, < = less than method detection limit. 5. Method 601/602+MtBE+IPE also included 504.1 EDB, MADEP VPH, and lead (by 3030C digestion) on the 1/19/03 event. 6. TCCs revised 2/26/01 so that TCCs calculated in CAP do not exceed GCLs established by RBCA.7. * The 2L Standards listed for the C9-C12 Aliphatic and C9-C10 Aromatic carbon fraction classes are actually the C9-C18 Aliphatic and C9-C22 Aromatic fraction class 2L Standards.8. NE = Not Established.9. J - The target analyte was positively identified below the quantitation limitand above the detection limit.10. D - The sample(s) were diluted due to targets detected over the highest point of the calibration curve, or due to matrix interference. Dilution factors are included in the final results. The result is from a diluted sample. Groundwater Analytical Data History for MW15Springs Road Gas House, Hickory, NC Quality Oil Company, LLC 2L Standards Groundwater Analytical Data History for PW3 Springs Road Gas House, Hickory, NCQuality Oil Company, LLC Date U.S. EPA Method BenzeneTolueneEthylbenzeneTotal XylenesMTBEIsopropyl ether (IPE)AcetoneChloroformMethylene Chloride1,2,4-Trimethylbenzene1,3,5-Trimethylbenzene11/18/96 502.2 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 -<1.0 -<1.0 <1.0 2/28/97 502.2 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 -<1.0 -<1.0 <1.0 5/12/97 6230 D/504.1 <1.0 <1.0 <1.0 <3.0 <1.0 <1.0 -<1.0 -<1.0 <1.02/13/98 6230 D <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 -<0.5 -<0.5 <0.54/29/98 6210D <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 -<0.5 -<0.5 <0.5 7/28/98 6210D+MtBE+IPE <1.0 <1.0 <1.0 <3.0 <1.0 <1.0 -<1.0 -<1.0 <1.010/26/98 6210D+MtBE+IPE <1.0 <1.0 <1.0 <3.0 <1.0 <1.0 -<5 -<1.0 <1.0 2/9/99 601/602+MtBE+IPE+EDB <0.5 <0.5 <0.5 <1.5 <5.0 <5 -<0.5 --- 6/21/99 601/602+MtBE+IPE+EDB <1.0 <1.0 <1.0 <3.0 <5.0 <5 -<1.0 --- 7/25/01 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5 -<1.0 --- 1/29/02 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5 -<1.0 ---7/24/02 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5.0 -<1.0 --- 1/27/03 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5.0 -<1.0 --- 7/24/03 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5.0 -<1.0 --- 1/8/04 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5.0 -<1.0 --- 7/27/04 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5.0 -<1.0 ---1/27/05 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5.0 -2.0 --- 7/20/07 6210D+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 <5.0 -<5.0 -<1.0 <1.0 1/24/08 6210D+MtBE+IPE <1.0 <5.0 <1.0 <3.0 <1.0 <1.0 -<5.0 -<1.0 <1.0 7/14/08 6210D+MtBE+IPE <1 <5 <1 <3 <1 <1 -<5 -<1 <1 1/14/09 6200B <1 <5 <1 <3 <1 <1 -<5 -<1 <17/20/09 6200B <1 <5 <1 <3 <1 <1 -<5 -<1 <1 1/5/10 6200B <0.060 <0.060 <0.050 <0.14 <0.060 <0.050 -<0.050 -<0.10 <0.10 7/9/10 6200B <0.11 <0.11 <0.11 <0.32 <0.12 <0.12 -<0.18 -<0.10 <0.11 1/3/11 6200B <0.11 <0.11 <0.11 <0.32 <0.12 <0.12 -<0.18 -<0.10 <0.11 7/28/11 6200B <0.13 <0.13 <0.15 <0.30 <0.13 <0.11 -<0.16 -<0.10 <0.101/24/12 6200B <1 <5 <1 <3 <1 <1 -<5 -<1 <1 7/31/12 6200B <1 <5 <1 <3 <1 <1 -<5 -<1 <1 1/7/13 6200B <1 <5 <1 <3 <1 <1 -<5 -<1 <1 7/29/13 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 -<0.172 -<0.103 <0.0870 1/27/14 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 0.43 <0.172 2.83 <0.103 <0.08707/24/14 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 <0.352 <0.172 <0.190 <0.103 <0.0870 7/22/15 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 <0.352 <0.172 <0.190 <0.103 <0.0870 1/14/16 6200B <0.119 6.99 <0.0920 <0.298 <0.169 <0.0920 <0.352 <0.172 <0.190 <0.103 <0.0870 7/27/16 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 <0.352 <0.172 <0.190 <0.103 <0.0870 1/16/17 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 <0.352 <0.172 <0.190 <0.103 <0.08707/31/17 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 1.89 <0.172 <0.190 <0.103 <0.0870 2/13/18 6200B <0.119 <0.0570 <0.0920 <0.180 0.31 <0.0920 <0.352 <0.172 <0.190 <0.103 <0.0870 8/22/18 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 < 0.169 < 0.0920 < 0.352 < 0.160 <0.190 < 0.103 < 0.0870 2/20/19 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 < 0.169 < 0.0920 < 0.352 < 0.160 <0.190 < 0.103 < 0.0870 8/26/19 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 < 0.169 < 0.0920 < 0.352 < 0.160 <0.190 < 0.103 < 0.0870 2/5/20 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 < 0.169 < 0.0920 < 0.352 < 0.160 <0.190 < 0.103 < 0.0870 9/3/20 6200B < 0.388 < 0.366 < 0.355 < 0.359 < 0.198 < 0.359 <<<< 0.335 < 0.352 2/1/21 6200B < 0.380 < 0.410 < 0.500 < 1.60 < 0.740 < 0.700 < 10.0 < 0.600 << 0.820 < 0.560 8/23/21 6200B < 0.380 < 0.410 < 0.500 < 1.60 < 0.740 < 0.700 < 10.0 < 0.600 << 0.820 < 0.560 2/8/22 6200B < 0.130 < 0.410 < 0.500 < 1.60 < 0.220 < 0.200 << 10.0 << 0.820 <10/4/22 6200B < 0.130 0.412 < 0.500 < 1.60 < 0.220 <<<<<< 2/8/23 6200B < 0.130 < 0.410 < 0.500 < 1.60 < 0.220 < 0.200 <<<<<1 600 600 500 20 70 6,000 0.19 5 400 400 Notes:1. All results in µg/L. 2. Bold denotes a detected concentration, shading denotes a concentration in excess of 2L standards. 3. Only selected analytes are listed. Analytical reports contain a complete list of analytes and results. 4. - = not sampled, < = less than method detection limit, NE = 2L limits not established, ND = 2L limit not established for compounds determined to be naturally occurring.5. Methods 502.2 and 6230D include MtBE and IPE on certain sampling events. 6. TCCs revised 2/26/01 so that TCCs calculated in CAP do not exceed GCLs established by RBCA. 2L Standards Date U.S. EPA Method BenzeneTolueneEthylbenzeneTotal XylenesMTBEIPEChloromethaneChloroformAcetone2-Butanone (MEK)8/2/02 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 -----7/24/03 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 -----1/8/04 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 -----7/27/04 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 -----1/27/05 601/602+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 --2.2 -- 7/20/07 6210D+MtBE+IPE <1.0 <5.0 <1.0 <2.0 <5.0 --<5.0 -- 1/24/08 6210D+MtBE+IPE <1.0 <5.0 <1.0 <3.0 <1.0 --<5.0 -- 7/14/08 6210D+MtBE+IPE <1 <5 <1 <3 <1 --<5 --1/14/09 6200B <1 <5 <1 <3 <1 --<5 <-7/20/09 6200B <1 <5 <1 <3 <1 --<5 <-1/5/10 6200B <0.060 <0.060 <0.050 <0.14 <0.060 --<0.050 <-7/9/10 6200B <0.11 <0.11 <0.11 <0.32 <0.12 --<0.18 <-7/28/11 6200B <0.13 <0.13 <0.15 <0.30 <0.13 --<0.16 <- 1/24/12 6200B <1 <5 <1 <3 <1 --<5 <- 7/31/12 6200B <1 <5 <1 <3 <1 --<5 <- 7/31/12 6200B <1 <5 <1 <3 <1 --<5 <- 1/7/13 6200B <1 <5 <1 <3 <1 --<5 <-7/29/13 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 1.32 <0.172 <<0.3781/27/14 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 <0.0850 <0.172 <<0.3787/24/14 6200B <0.119 <0.0570 <0.0920 <0.298 0.53 <0.0920 <0.0850 <0.172 <<0.3781/7/15 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 <0.0850 <0.172 <<0.3787/22/15 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 <0.0850 <0.172 <<0.378 1/14/16 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 <0.0850 <0.172 <<0.378 7/27/16 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 <0.0850 <0.172 <<0.378 1/16/17 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 <0.0850 <0.172 <<0.378 7/31/17 6200B <0.119 <0.0570 <0.0920 <0.298 <0.169 <0.0920 <0.0850 <0.172 <<0.3782/13/18 6200B <0.119 <0.0570 <0.0920 <0.180 0.27 <0.0920 <0.0850 <0.172 <0.388/22/18 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 0.51 < 0.0920 << 0.160 8.75 < 2/20/19 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 < 0.169 < 0.0920 <0.0850 <0.172 < 0.352 <0.378 8/26/19 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 < 0.169 < 0.0920 <0.0850 0.95 < 0.352 <0.3782/5/20 6200B < 0.119 < 0.0570 < 0.0920 < 0.122 < 0.169 < 0.0920 <0.0850 < 0.160 < 0.352 <0.3789/3/20 6200B < 0.388 < 0.366 < 0.355 < 0.359 < 0.198 < 0.359 <0.81 <<2/1/21 6200B < 0.380 < 0.410 < 0.500 < 1.60 < 0.740 < 0.700 <1.31 < 10.0 <8/23/21 6200B < 0.380 < 0.410 < 0.500 < 1.60 < 0.740 < 0.700 << 0.600 < 10.0 < 2/8/22 6200B < 0.130 < 0.410 < 0.500 < 1.60 < 0.220 < 0.200 << 10.0 < 10/4/22 6200B < 0.130 < 0.410 < 0.500 < 1.60 < 0.220 < 0.200 0.706 <<< 2/8/23 6200B < 0.130 < 0.410 < 0.500 < 1.60 < 0.220 < 0.200 <<<< 1 600 600 500 20 70 3 70 6,000 4,000Notes:1: All results in µg/L.2: Only selected analytes are listed. Analytical reports contain a complete list of analytes and results.3: TCCs revised 2/26/01 so that TCCs calculated in CAP do not exceed GCLs established by RBCA. 2L Standards Groundwater Analytical Data History for PW4Springs Road Gas House, Hickory, NCQuality Oil Company, LLC APPENDIX D ANALYTICAL REPORT PREPARED FOR Attn: Ryan Kerins Terraquest Environmental Consultants, PC 100 E. Ruffin Street Mebane, North Carolina 27302 Generated 2/17/2023 6:05:02 PM JOB DESCRIPTION Springs Road Gas House JOB NUMBER 400-233070-1 See page two for job notes and contact information. Pensacola FL 32514 3355 McLemore Drive Eurofins Pensacola Page 1 of 34 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Eurofins Pensacola Eurofins Pensacola is a laboratory within Eurofins Environment Testing Southeast, LLC, a company within Eurofins Environment Testing Group of Companies Job Notes The test results in this report meet all NELAP requirements for accredited parameters, unless otherwise noted, and relate only to the referenced samples. Pursuant to NELAP, this report may not be reproduced, except in full, without written approval from the laboratory. For questions please contact the Project Manager at the e-mail address listed on this page, or the telephone number at the bottom of the page. Eurofins Environment Testing Southeast LLC, Pensacola Certifications and Approvals: Alabama (40150), Arizona (AZ0710), Arkansas (88-0689), Florida (E81010), Illinois (200041), Iowa (367), Kansas (E-10253), Kentucky UST (53), Louisiana (30748), Maryland (233), Massachusetts (M-FL094), Michigan (9912), New Hampshire (250510), New Jersey (FL006), North Carolina (314), Oklahoma (9810), Pennsylvania (68-00467), Rhode Island (LAO00307), South Carolina (96026), Tennessee (TN02907), Texas (T104704286-10-2), Virginia (00008), Washington (C2043), West Virginia (136), USDA Foreign Soil Permit (P330-08-00006). The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins Environment Testing Southeast, LLC Project Manager. Authorization Generated 2/17/2023 6:05:02 PM Authorized for release by Chad Bechtold, Project Manager Chad.Bechtold@et.eurofinsus.com (813)690-3563 Page 2 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Table of Contents Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Laboratory Job ID: 400-233070-1 Page 3 of 34 Eurofins Pensacola2/17/2023 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: Terraquest Environmental Consultants, PC Job ID: 400-233070-1 Project/Site: Springs Road Gas House Job ID: 400-233070-1 Laboratory: Eurofins Pensacola Narrative Job Narrative 400-233070-1 Receipt The samples were received on 2/10/2023 8:53 AM. Unless otherwise noted below, the samples arrived in good condition, and, where required, properly preserved and on ice. The temperature of the cooler at receipt time was 0.9°C GC/MS VOA No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page. Eurofins PensacolaPage 4 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Client Sample ID: MW12 Lab Sample ID: 400-233070-1 Chloroform RL 1.00 ug/L MDL 1.00 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA11.01 SM6200-B Methyl tert-butyl ether 1.00 ug/L0.220 Total/NA116.3 SM6200-B Client Sample ID: MW13 Lab Sample ID: 400-233070-2 No Detections. Client Sample ID: MW14 Lab Sample ID: 400-233070-3 Chloroform RL 1.00 ug/L MDL 1.00 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA11.85 SM6200-B Methyl tert-butyl ether 1.00 ug/L0.220 Total/NA10.694 J SM6200-B Client Sample ID: MW15 Lab Sample ID: 400-233070-4 1,2,4-Trimethylbenzene RL 1.00 ug/L MDL 0.820 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.930 SM6200-B Benzene 1.00 ug/L0.130 Total/NA10.349 J SM6200-B Ethylbenzene 1.00 ug/L0.500 Total/NA10.776 J SM6200-B Isopropylbenzene 1.00 ug/L0.530 Total/NA15.37 SM6200-B Methyl tert-butyl ether 1.00 ug/L0.220 Total/NA13.74 SM6200-B Naphthalene 5.00 ug/L3.00 Total/NA131.7 SM6200-B n-Butylbenzene 1.00 ug/L0.760 Total/NA11.12 SM6200-B N-Propylbenzene 1.00 ug/L0.690 Total/NA11.27 SM6200-B sec-Butylbenzene 1.00 ug/L0.700 Total/NA11.37 SM6200-B Client Sample ID: PW3 Lab Sample ID: 400-233070-5 No Detections. Client Sample ID: PW4 Lab Sample ID: 400-233070-6 No Detections. Eurofins Pensacola This Detection Summary does not include radiochemical test results. Page 5 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sample Summary Client: Terraquest Environmental Consultants, PC Job ID: 400-233070-1 Project/Site: Springs Road Gas House Lab Sample ID Client Sample ID Matrix Collected Received 400-233070-1 MW12 Water 02/08/23 09:15 02/10/23 08:53 400-233070-2 MW13 Water 02/08/23 09:24 02/10/23 08:53 400-233070-3 MW14 Water 02/08/23 09:32 02/10/23 08:53 400-233070-4 MW15 Water 02/08/23 09:44 02/10/23 08:53 400-233070-5 PW3 Water 02/08/23 10:01 02/10/23 08:53 400-233070-6 PW4 Water 02/08/23 10:15 02/10/23 08:53 Eurofins PensacolaPage 6 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Lab Sample ID: 400-233070-1Client Sample ID: MW12 Matrix: WaterDate Collected: 02/08/23 09:15 Date Received: 02/10/23 08:53 Method: SM6200-B - Volatile Organic Compounds RL MDL 0.160 U 1.00 0.160 ug/L 02/16/23 08:24 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.180 ug/L 02/16/23 08:24 10.180 U1,1,1-Trichloroethane 1.00 0.500 ug/L 02/16/23 08:24 10.500 U1,1,2,2-Tetrachloroethane 5.00 0.210 ug/L 02/16/23 08:24 10.210 U1,1,2-Trichloroethane 1.00 0.500 ug/L 02/16/23 08:24 10.500 U1,1-Dichloroethane 1.00 0.500 ug/L 02/16/23 08:24 10.500 U1,1-Dichloroethene 1.00 0.500 ug/L 02/16/23 08:24 10.500 U1,1-Dichloropropene 1.00 0.900 ug/L 02/16/23 08:24 10.900 U1,2,3-Trichlorobenzene 5.00 0.840 ug/L 02/16/23 08:24 10.840 U1,2,3-Trichloropropane 1.00 0.820 ug/L 02/16/23 08:24 10.820 U1,2,4-Trichlorobenzene 1.00 0.820 ug/L 02/16/23 08:24 10.820 U1,2,4-Trimethylbenzene 1.00 0.230 ug/L 02/16/23 08:24 10.230 U1,2-Dibromoethane (EDB) 1.00 0.500 ug/L 02/16/23 08:24 10.500 U1,2-Dichlorobenzene 1.00 0.190 ug/L 02/16/23 08:24 10.190 U1,2-Dichloroethane 1.00 0.500 ug/L 02/16/23 08:24 10.500 U1,2-Dichloropropane 1.00 0.560 ug/L 02/16/23 08:24 10.560 U1,3,5-Trimethylbenzene 1.00 0.540 ug/L 02/16/23 08:24 10.540 U1,3-Dichlorobenzene 1.00 0.500 ug/L 02/16/23 08:24 10.500 U1,3-Dichloropropane 1.00 0.640 ug/L 02/16/23 08:24 10.640 U1,4-Dichlorobenzene 1.00 0.500 ug/L 02/16/23 08:24 10.500 U2,2-Dichloropropane 25.0 2.60 ug/L 02/16/23 08:24 12.60 U2-Butanone (MEK) 1.00 0.570 ug/L 02/16/23 08:24 10.570 U2-Chlorotoluene 25.0 1.40 ug/L 02/16/23 08:24 11.40 U2-Hexanone 1.00 0.560 ug/L 02/16/23 08:24 10.560 U4-Chlorotoluene 25.0 1.80 ug/L 02/16/23 08:24 11.80 U4-Methyl-2-pentanone (MIBK) 25.0 10.0 ug/L 02/16/23 08:24 110.0 UAcetone 1.00 0.130 ug/L 02/16/23 08:24 10.130 UBenzene 1.00 0.540 ug/L 02/16/23 08:24 10.540 UBromobenzene 1.00 0.210 ug/L 02/16/23 08:24 10.210 UBromochloromethane 1.00 0.500 ug/L 02/16/23 08:24 10.500 UBromodichloromethane 5.00 0.250 ug/L 02/16/23 08:24 10.250 UBromoform 1.00 0.980 ug/L 02/16/23 08:24 10.980 UBromomethane 1.00 0.190 ug/L 02/16/23 08:24 10.190 UCarbon tetrachloride 1.00 0.150 ug/L 02/16/23 08:24 10.150 UChlorobenzene 1.00 0.760 ug/L 02/16/23 08:24 10.760 UChloroethane 1.00 1.00 ug/L 02/16/23 08:24 11.01Chloroform 1.00 0.320 ug/L 02/16/23 08:24 10.320 UChloromethane 1.00 0.200 ug/L 02/16/23 08:24 10.200 Ucis-1,2-Dichloroethene 5.00 0.500 ug/L 02/16/23 08:24 10.500 Ucis-1,3-Dichloropropene 1.00 0.240 ug/L 02/16/23 08:24 10.240 UDibromochloromethane 1.00 0.850 ug/L 02/16/23 08:24 10.850 UDichlorodifluoromethane 1.00 0.200 ug/L 02/16/23 08:24 10.200 UDiisopropyl ether 100 24.0 ug/L 02/16/23 08:24 124.0 UEthanol 1.00 0.500 ug/L 02/16/23 08:24 10.500 UEthylbenzene 1.00 0.530 ug/L 02/16/23 08:24 10.530 UIsopropylbenzene 1.00 0.220 ug/L 02/16/23 08:24 116.3Methyl tert-butyl ether 5.00 3.00 ug/L 02/16/23 08:24 13.00 UMethylene Chloride 5.00 0.630 ug/L 02/16/23 08:24 10.630 Um-Xylene & p-Xylene 5.00 3.00 ug/L 02/16/23 08:24 13.00 UNaphthalene Eurofins Pensacola Page 7 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Lab Sample ID: 400-233070-1Client Sample ID: MW12 Matrix: WaterDate Collected: 02/08/23 09:15 Date Received: 02/10/23 08:53 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 0.760 U 1.00 0.760 ug/L 02/16/23 08:24 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier n-Butylbenzene 1.00 0.690 ug/L 02/16/23 08:24 10.690 UN-Propylbenzene 5.00 0.600 ug/L 02/16/23 08:24 10.600 Uo-Xylene 1.00 0.710 ug/L 02/16/23 08:24 10.710 Up-Cymene (p-Isopropyltoluene) 1.00 0.700 ug/L 02/16/23 08:24 10.700 Usec-Butylbenzene 1.00 1.00 ug/L 02/16/23 08:24 11.00 UStyrene 1.00 0.630 ug/L 02/16/23 08:24 10.630 Utert-Butylbenzene 1.00 0.900 ug/L 02/16/23 08:24 10.900 UTetrachloroethene 1.00 0.410 ug/L 02/16/23 08:24 10.410 UToluene 1.00 0.500 ug/L 02/16/23 08:24 10.500 Utrans-1,2-Dichloroethene 5.00 0.200 ug/L 02/16/23 08:24 10.200 Utrans-1,3-Dichloropropene 1.00 0.150 ug/L 02/16/23 08:24 10.150 UTrichloroethene 1.00 0.520 ug/L 02/16/23 08:24 10.520 UTrichlorofluoromethane 25.0 0.930 ug/L 02/16/23 08:24 10.930 UVinyl acetate 1.00 0.500 ug/L 02/16/23 08:24 10.500 UVinyl chloride 10.0 1.60 ug/L 02/16/23 08:24 11.60 UXylenes, Total 4-Bromofluorobenzene 97 72-119 02/16/23 08:24 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 97 02/16/23 08:24 175-126 Toluene-d8 (Surr)96 02/16/23 08:24 164-132 Eurofins Pensacola Page 8 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Lab Sample ID: 400-233070-2Client Sample ID: MW13 Matrix: WaterDate Collected: 02/08/23 09:24 Date Received: 02/10/23 08:53 Method: SM6200-B - Volatile Organic Compounds RL MDL 0.160 U 1.00 0.160 ug/L 02/16/23 08:46 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.180 ug/L 02/16/23 08:46 10.180 U1,1,1-Trichloroethane 1.00 0.500 ug/L 02/16/23 08:46 10.500 U1,1,2,2-Tetrachloroethane 5.00 0.210 ug/L 02/16/23 08:46 10.210 U1,1,2-Trichloroethane 1.00 0.500 ug/L 02/16/23 08:46 10.500 U1,1-Dichloroethane 1.00 0.500 ug/L 02/16/23 08:46 10.500 U1,1-Dichloroethene 1.00 0.500 ug/L 02/16/23 08:46 10.500 U1,1-Dichloropropene 1.00 0.900 ug/L 02/16/23 08:46 10.900 U1,2,3-Trichlorobenzene 5.00 0.840 ug/L 02/16/23 08:46 10.840 U1,2,3-Trichloropropane 1.00 0.820 ug/L 02/16/23 08:46 10.820 U1,2,4-Trichlorobenzene 1.00 0.820 ug/L 02/16/23 08:46 10.820 U1,2,4-Trimethylbenzene 1.00 0.230 ug/L 02/16/23 08:46 10.230 U1,2-Dibromoethane (EDB) 1.00 0.500 ug/L 02/16/23 08:46 10.500 U1,2-Dichlorobenzene 1.00 0.190 ug/L 02/16/23 08:46 10.190 U1,2-Dichloroethane 1.00 0.500 ug/L 02/16/23 08:46 10.500 U1,2-Dichloropropane 1.00 0.560 ug/L 02/16/23 08:46 10.560 U1,3,5-Trimethylbenzene 1.00 0.540 ug/L 02/16/23 08:46 10.540 U1,3-Dichlorobenzene 1.00 0.500 ug/L 02/16/23 08:46 10.500 U1,3-Dichloropropane 1.00 0.640 ug/L 02/16/23 08:46 10.640 U1,4-Dichlorobenzene 1.00 0.500 ug/L 02/16/23 08:46 10.500 U2,2-Dichloropropane 25.0 2.60 ug/L 02/16/23 08:46 12.60 U2-Butanone (MEK) 1.00 0.570 ug/L 02/16/23 08:46 10.570 U2-Chlorotoluene 25.0 1.40 ug/L 02/16/23 08:46 11.40 U2-Hexanone 1.00 0.560 ug/L 02/16/23 08:46 10.560 U4-Chlorotoluene 25.0 1.80 ug/L 02/16/23 08:46 11.80 U4-Methyl-2-pentanone (MIBK) 25.0 10.0 ug/L 02/16/23 08:46 110.0 UAcetone 1.00 0.130 ug/L 02/16/23 08:46 10.130 UBenzene 1.00 0.540 ug/L 02/16/23 08:46 10.540 UBromobenzene 1.00 0.210 ug/L 02/16/23 08:46 10.210 UBromochloromethane 1.00 0.500 ug/L 02/16/23 08:46 10.500 UBromodichloromethane 5.00 0.250 ug/L 02/16/23 08:46 10.250 UBromoform 1.00 0.980 ug/L 02/16/23 08:46 10.980 UBromomethane 1.00 0.190 ug/L 02/16/23 08:46 10.190 UCarbon tetrachloride 1.00 0.150 ug/L 02/16/23 08:46 10.150 UChlorobenzene 1.00 0.760 ug/L 02/16/23 08:46 10.760 UChloroethane 1.00 1.00 ug/L 02/16/23 08:46 11.00 UChloroform 1.00 0.320 ug/L 02/16/23 08:46 10.320 UChloromethane 1.00 0.200 ug/L 02/16/23 08:46 10.200 Ucis-1,2-Dichloroethene 5.00 0.500 ug/L 02/16/23 08:46 10.500 Ucis-1,3-Dichloropropene 1.00 0.240 ug/L 02/16/23 08:46 10.240 UDibromochloromethane 1.00 0.850 ug/L 02/16/23 08:46 10.850 UDichlorodifluoromethane 1.00 0.200 ug/L 02/16/23 08:46 10.200 UDiisopropyl ether 100 24.0 ug/L 02/16/23 08:46 124.0 UEthanol 1.00 0.500 ug/L 02/16/23 08:46 10.500 UEthylbenzene 1.00 0.530 ug/L 02/16/23 08:46 10.530 UIsopropylbenzene 1.00 0.220 ug/L 02/16/23 08:46 10.220 UMethyl tert-butyl ether 5.00 3.00 ug/L 02/16/23 08:46 13.00 UMethylene Chloride 5.00 0.630 ug/L 02/16/23 08:46 10.630 Um-Xylene & p-Xylene 5.00 3.00 ug/L 02/16/23 08:46 13.00 UNaphthalene Eurofins Pensacola Page 9 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Lab Sample ID: 400-233070-2Client Sample ID: MW13 Matrix: WaterDate Collected: 02/08/23 09:24 Date Received: 02/10/23 08:53 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 0.760 U 1.00 0.760 ug/L 02/16/23 08:46 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier n-Butylbenzene 1.00 0.690 ug/L 02/16/23 08:46 10.690 UN-Propylbenzene 5.00 0.600 ug/L 02/16/23 08:46 10.600 Uo-Xylene 1.00 0.710 ug/L 02/16/23 08:46 10.710 Up-Cymene (p-Isopropyltoluene) 1.00 0.700 ug/L 02/16/23 08:46 10.700 Usec-Butylbenzene 1.00 1.00 ug/L 02/16/23 08:46 11.00 UStyrene 1.00 0.630 ug/L 02/16/23 08:46 10.630 Utert-Butylbenzene 1.00 0.900 ug/L 02/16/23 08:46 10.900 UTetrachloroethene 1.00 0.410 ug/L 02/16/23 08:46 10.410 UToluene 1.00 0.500 ug/L 02/16/23 08:46 10.500 Utrans-1,2-Dichloroethene 5.00 0.200 ug/L 02/16/23 08:46 10.200 Utrans-1,3-Dichloropropene 1.00 0.150 ug/L 02/16/23 08:46 10.150 UTrichloroethene 1.00 0.520 ug/L 02/16/23 08:46 10.520 UTrichlorofluoromethane 25.0 0.930 ug/L 02/16/23 08:46 10.930 UVinyl acetate 1.00 0.500 ug/L 02/16/23 08:46 10.500 UVinyl chloride 10.0 1.60 ug/L 02/16/23 08:46 11.60 UXylenes, Total 4-Bromofluorobenzene 99 72-119 02/16/23 08:46 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 96 02/16/23 08:46 175-126 Toluene-d8 (Surr)96 02/16/23 08:46 164-132 Eurofins Pensacola Page 10 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Lab Sample ID: 400-233070-3Client Sample ID: MW14 Matrix: WaterDate Collected: 02/08/23 09:32 Date Received: 02/10/23 08:53 Method: SM6200-B - Volatile Organic Compounds RL MDL 0.160 U 1.00 0.160 ug/L 02/16/23 09:09 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.180 ug/L 02/16/23 09:09 10.180 U1,1,1-Trichloroethane 1.00 0.500 ug/L 02/16/23 09:09 10.500 U1,1,2,2-Tetrachloroethane 5.00 0.210 ug/L 02/16/23 09:09 10.210 U1,1,2-Trichloroethane 1.00 0.500 ug/L 02/16/23 09:09 10.500 U1,1-Dichloroethane 1.00 0.500 ug/L 02/16/23 09:09 10.500 U1,1-Dichloroethene 1.00 0.500 ug/L 02/16/23 09:09 10.500 U1,1-Dichloropropene 1.00 0.900 ug/L 02/16/23 09:09 10.900 U1,2,3-Trichlorobenzene 5.00 0.840 ug/L 02/16/23 09:09 10.840 U1,2,3-Trichloropropane 1.00 0.820 ug/L 02/16/23 09:09 10.820 U1,2,4-Trichlorobenzene 1.00 0.820 ug/L 02/16/23 09:09 10.820 U1,2,4-Trimethylbenzene 1.00 0.230 ug/L 02/16/23 09:09 10.230 U1,2-Dibromoethane (EDB) 1.00 0.500 ug/L 02/16/23 09:09 10.500 U1,2-Dichlorobenzene 1.00 0.190 ug/L 02/16/23 09:09 10.190 U1,2-Dichloroethane 1.00 0.500 ug/L 02/16/23 09:09 10.500 U1,2-Dichloropropane 1.00 0.560 ug/L 02/16/23 09:09 10.560 U1,3,5-Trimethylbenzene 1.00 0.540 ug/L 02/16/23 09:09 10.540 U1,3-Dichlorobenzene 1.00 0.500 ug/L 02/16/23 09:09 10.500 U1,3-Dichloropropane 1.00 0.640 ug/L 02/16/23 09:09 10.640 U1,4-Dichlorobenzene 1.00 0.500 ug/L 02/16/23 09:09 10.500 U2,2-Dichloropropane 25.0 2.60 ug/L 02/16/23 09:09 12.60 U2-Butanone (MEK) 1.00 0.570 ug/L 02/16/23 09:09 10.570 U2-Chlorotoluene 25.0 1.40 ug/L 02/16/23 09:09 11.40 U2-Hexanone 1.00 0.560 ug/L 02/16/23 09:09 10.560 U4-Chlorotoluene 25.0 1.80 ug/L 02/16/23 09:09 11.80 U4-Methyl-2-pentanone (MIBK) 25.0 10.0 ug/L 02/16/23 09:09 110.0 UAcetone 1.00 0.130 ug/L 02/16/23 09:09 10.130 UBenzene 1.00 0.540 ug/L 02/16/23 09:09 10.540 UBromobenzene 1.00 0.210 ug/L 02/16/23 09:09 10.210 UBromochloromethane 1.00 0.500 ug/L 02/16/23 09:09 10.500 UBromodichloromethane 5.00 0.250 ug/L 02/16/23 09:09 10.250 UBromoform 1.00 0.980 ug/L 02/16/23 09:09 10.980 UBromomethane 1.00 0.190 ug/L 02/16/23 09:09 10.190 UCarbon tetrachloride 1.00 0.150 ug/L 02/16/23 09:09 10.150 UChlorobenzene 1.00 0.760 ug/L 02/16/23 09:09 10.760 UChloroethane 1.00 1.00 ug/L 02/16/23 09:09 11.85Chloroform 1.00 0.320 ug/L 02/16/23 09:09 10.320 UChloromethane 1.00 0.200 ug/L 02/16/23 09:09 10.200 Ucis-1,2-Dichloroethene 5.00 0.500 ug/L 02/16/23 09:09 10.500 Ucis-1,3-Dichloropropene 1.00 0.240 ug/L 02/16/23 09:09 10.240 UDibromochloromethane 1.00 0.850 ug/L 02/16/23 09:09 10.850 UDichlorodifluoromethane 1.00 0.200 ug/L 02/16/23 09:09 10.200 UDiisopropyl ether 100 24.0 ug/L 02/16/23 09:09 124.0 UEthanol 1.00 0.500 ug/L 02/16/23 09:09 10.500 UEthylbenzene 1.00 0.530 ug/L 02/16/23 09:09 10.530 UIsopropylbenzene 1.00 0.220 ug/L 02/16/23 09:09 10.694 JMethyl tert-butyl ether 5.00 3.00 ug/L 02/16/23 09:09 13.00 UMethylene Chloride 5.00 0.630 ug/L 02/16/23 09:09 10.630 Um-Xylene & p-Xylene 5.00 3.00 ug/L 02/16/23 09:09 13.00 UNaphthalene Eurofins Pensacola Page 11 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Lab Sample ID: 400-233070-3Client Sample ID: MW14 Matrix: WaterDate Collected: 02/08/23 09:32 Date Received: 02/10/23 08:53 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 0.760 U 1.00 0.760 ug/L 02/16/23 09:09 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier n-Butylbenzene 1.00 0.690 ug/L 02/16/23 09:09 10.690 UN-Propylbenzene 5.00 0.600 ug/L 02/16/23 09:09 10.600 Uo-Xylene 1.00 0.710 ug/L 02/16/23 09:09 10.710 Up-Cymene (p-Isopropyltoluene) 1.00 0.700 ug/L 02/16/23 09:09 10.700 Usec-Butylbenzene 1.00 1.00 ug/L 02/16/23 09:09 11.00 UStyrene 1.00 0.630 ug/L 02/16/23 09:09 10.630 Utert-Butylbenzene 1.00 0.900 ug/L 02/16/23 09:09 10.900 UTetrachloroethene 1.00 0.410 ug/L 02/16/23 09:09 10.410 UToluene 1.00 0.500 ug/L 02/16/23 09:09 10.500 Utrans-1,2-Dichloroethene 5.00 0.200 ug/L 02/16/23 09:09 10.200 Utrans-1,3-Dichloropropene 1.00 0.150 ug/L 02/16/23 09:09 10.150 UTrichloroethene 1.00 0.520 ug/L 02/16/23 09:09 10.520 UTrichlorofluoromethane 25.0 0.930 ug/L 02/16/23 09:09 10.930 UVinyl acetate 1.00 0.500 ug/L 02/16/23 09:09 10.500 UVinyl chloride 10.0 1.60 ug/L 02/16/23 09:09 11.60 UXylenes, Total 4-Bromofluorobenzene 99 72-119 02/16/23 09:09 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 98 02/16/23 09:09 175-126 Toluene-d8 (Surr)96 02/16/23 09:09 164-132 Eurofins Pensacola Page 12 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Lab Sample ID: 400-233070-4Client Sample ID: MW15 Matrix: WaterDate Collected: 02/08/23 09:44 Date Received: 02/10/23 08:53 Method: SM6200-B - Volatile Organic Compounds RL MDL 0.160 U 1.00 0.160 ug/L 02/16/23 09:32 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.180 ug/L 02/16/23 09:32 10.180 U1,1,1-Trichloroethane 1.00 0.500 ug/L 02/16/23 09:32 10.500 U1,1,2,2-Tetrachloroethane 5.00 0.210 ug/L 02/16/23 09:32 10.210 U1,1,2-Trichloroethane 1.00 0.500 ug/L 02/16/23 09:32 10.500 U1,1-Dichloroethane 1.00 0.500 ug/L 02/16/23 09:32 10.500 U1,1-Dichloroethene 1.00 0.500 ug/L 02/16/23 09:32 10.500 U1,1-Dichloropropene 1.00 0.900 ug/L 02/16/23 09:32 10.900 U1,2,3-Trichlorobenzene 5.00 0.840 ug/L 02/16/23 09:32 10.840 U1,2,3-Trichloropropane 1.00 0.820 ug/L 02/16/23 09:32 10.820 U1,2,4-Trichlorobenzene 1.00 0.820 ug/L 02/16/23 09:32 10.930 J1,2,4-Trimethylbenzene 1.00 0.230 ug/L 02/16/23 09:32 10.230 U1,2-Dibromoethane (EDB) 1.00 0.500 ug/L 02/16/23 09:32 10.500 U1,2-Dichlorobenzene 1.00 0.190 ug/L 02/16/23 09:32 10.190 U1,2-Dichloroethane 1.00 0.500 ug/L 02/16/23 09:32 10.500 U1,2-Dichloropropane 1.00 0.560 ug/L 02/16/23 09:32 10.560 U1,3,5-Trimethylbenzene 1.00 0.540 ug/L 02/16/23 09:32 10.540 U1,3-Dichlorobenzene 1.00 0.500 ug/L 02/16/23 09:32 10.500 U1,3-Dichloropropane 1.00 0.640 ug/L 02/16/23 09:32 10.640 U1,4-Dichlorobenzene 1.00 0.500 ug/L 02/16/23 09:32 10.500 U2,2-Dichloropropane 25.0 2.60 ug/L 02/16/23 09:32 12.60 U2-Butanone (MEK) 1.00 0.570 ug/L 02/16/23 09:32 10.570 U2-Chlorotoluene 25.0 1.40 ug/L 02/16/23 09:32 11.40 U2-Hexanone 1.00 0.560 ug/L 02/16/23 09:32 10.560 U4-Chlorotoluene 25.0 1.80 ug/L 02/16/23 09:32 11.80 U4-Methyl-2-pentanone (MIBK) 25.0 10.0 ug/L 02/16/23 09:32 110.0 UAcetone 1.00 0.130 ug/L 02/16/23 09:32 10.349 JBenzene 1.00 0.540 ug/L 02/16/23 09:32 10.540 UBromobenzene 1.00 0.210 ug/L 02/16/23 09:32 10.210 UBromochloromethane 1.00 0.500 ug/L 02/16/23 09:32 10.500 UBromodichloromethane 5.00 0.250 ug/L 02/16/23 09:32 10.250 UBromoform 1.00 0.980 ug/L 02/16/23 09:32 10.980 UBromomethane 1.00 0.190 ug/L 02/16/23 09:32 10.190 UCarbon tetrachloride 1.00 0.150 ug/L 02/16/23 09:32 10.150 UChlorobenzene 1.00 0.760 ug/L 02/16/23 09:32 10.760 UChloroethane 1.00 1.00 ug/L 02/16/23 09:32 11.00 UChloroform 1.00 0.320 ug/L 02/16/23 09:32 10.320 UChloromethane 1.00 0.200 ug/L 02/16/23 09:32 10.200 Ucis-1,2-Dichloroethene 5.00 0.500 ug/L 02/16/23 09:32 10.500 Ucis-1,3-Dichloropropene 1.00 0.240 ug/L 02/16/23 09:32 10.240 UDibromochloromethane 1.00 0.850 ug/L 02/16/23 09:32 10.850 UDichlorodifluoromethane 1.00 0.200 ug/L 02/16/23 09:32 10.200 UDiisopropyl ether 100 24.0 ug/L 02/16/23 09:32 124.0 UEthanol 1.00 0.500 ug/L 02/16/23 09:32 10.776 JEthylbenzene 1.00 0.530 ug/L 02/16/23 09:32 15.37Isopropylbenzene 1.00 0.220 ug/L 02/16/23 09:32 13.74Methyl tert-butyl ether 5.00 3.00 ug/L 02/16/23 09:32 13.00 UMethylene Chloride 5.00 0.630 ug/L 02/16/23 09:32 10.630 Um-Xylene & p-Xylene 5.00 3.00 ug/L 02/16/23 09:32 131.7Naphthalene Eurofins Pensacola Page 13 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Lab Sample ID: 400-233070-4Client Sample ID: MW15 Matrix: WaterDate Collected: 02/08/23 09:44 Date Received: 02/10/23 08:53 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 1.12 1.00 0.760 ug/L 02/16/23 09:32 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier n-Butylbenzene 1.00 0.690 ug/L 02/16/23 09:32 11.27N-Propylbenzene 5.00 0.600 ug/L 02/16/23 09:32 10.600 Uo-Xylene 1.00 0.710 ug/L 02/16/23 09:32 10.710 Up-Cymene (p-Isopropyltoluene) 1.00 0.700 ug/L 02/16/23 09:32 11.37sec-Butylbenzene 1.00 1.00 ug/L 02/16/23 09:32 11.00 UStyrene 1.00 0.630 ug/L 02/16/23 09:32 10.630 Utert-Butylbenzene 1.00 0.900 ug/L 02/16/23 09:32 10.900 UTetrachloroethene 1.00 0.410 ug/L 02/16/23 09:32 10.410 UToluene 1.00 0.500 ug/L 02/16/23 09:32 10.500 Utrans-1,2-Dichloroethene 5.00 0.200 ug/L 02/16/23 09:32 10.200 Utrans-1,3-Dichloropropene 1.00 0.150 ug/L 02/16/23 09:32 10.150 UTrichloroethene 1.00 0.520 ug/L 02/16/23 09:32 10.520 UTrichlorofluoromethane 25.0 0.930 ug/L 02/16/23 09:32 10.930 UVinyl acetate 1.00 0.500 ug/L 02/16/23 09:32 10.500 UVinyl chloride 10.0 1.60 ug/L 02/16/23 09:32 11.60 UXylenes, Total 4-Bromofluorobenzene 98 72-119 02/16/23 09:32 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 99 02/16/23 09:32 175-126 Toluene-d8 (Surr)97 02/16/23 09:32 164-132 Eurofins Pensacola Page 14 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Lab Sample ID: 400-233070-5Client Sample ID: PW3 Matrix: WaterDate Collected: 02/08/23 10:01 Date Received: 02/10/23 08:53 Method: SM6200-B - Volatile Organic Compounds RL MDL 0.160 U 1.00 0.160 ug/L 02/16/23 09:54 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.180 ug/L 02/16/23 09:54 10.180 U1,1,1-Trichloroethane 1.00 0.500 ug/L 02/16/23 09:54 10.500 U1,1,2,2-Tetrachloroethane 5.00 0.210 ug/L 02/16/23 09:54 10.210 U1,1,2-Trichloroethane 1.00 0.500 ug/L 02/16/23 09:54 10.500 U1,1-Dichloroethane 1.00 0.500 ug/L 02/16/23 09:54 10.500 U1,1-Dichloroethene 1.00 0.500 ug/L 02/16/23 09:54 10.500 U1,1-Dichloropropene 1.00 0.900 ug/L 02/16/23 09:54 10.900 U1,2,3-Trichlorobenzene 5.00 0.840 ug/L 02/16/23 09:54 10.840 U1,2,3-Trichloropropane 1.00 0.820 ug/L 02/16/23 09:54 10.820 U1,2,4-Trichlorobenzene 1.00 0.820 ug/L 02/16/23 09:54 10.820 U1,2,4-Trimethylbenzene 1.00 0.230 ug/L 02/16/23 09:54 10.230 U1,2-Dibromoethane (EDB) 1.00 0.500 ug/L 02/16/23 09:54 10.500 U1,2-Dichlorobenzene 1.00 0.190 ug/L 02/16/23 09:54 10.190 U1,2-Dichloroethane 1.00 0.500 ug/L 02/16/23 09:54 10.500 U1,2-Dichloropropane 1.00 0.560 ug/L 02/16/23 09:54 10.560 U1,3,5-Trimethylbenzene 1.00 0.540 ug/L 02/16/23 09:54 10.540 U1,3-Dichlorobenzene 1.00 0.500 ug/L 02/16/23 09:54 10.500 U1,3-Dichloropropane 1.00 0.640 ug/L 02/16/23 09:54 10.640 U1,4-Dichlorobenzene 1.00 0.500 ug/L 02/16/23 09:54 10.500 U2,2-Dichloropropane 25.0 2.60 ug/L 02/16/23 09:54 12.60 U2-Butanone (MEK) 1.00 0.570 ug/L 02/16/23 09:54 10.570 U2-Chlorotoluene 25.0 1.40 ug/L 02/16/23 09:54 11.40 U2-Hexanone 1.00 0.560 ug/L 02/16/23 09:54 10.560 U4-Chlorotoluene 25.0 1.80 ug/L 02/16/23 09:54 11.80 U4-Methyl-2-pentanone (MIBK) 25.0 10.0 ug/L 02/16/23 09:54 110.0 UAcetone 1.00 0.130 ug/L 02/16/23 09:54 10.130 UBenzene 1.00 0.540 ug/L 02/16/23 09:54 10.540 UBromobenzene 1.00 0.210 ug/L 02/16/23 09:54 10.210 UBromochloromethane 1.00 0.500 ug/L 02/16/23 09:54 10.500 UBromodichloromethane 5.00 0.250 ug/L 02/16/23 09:54 10.250 UBromoform 1.00 0.980 ug/L 02/16/23 09:54 10.980 UBromomethane 1.00 0.190 ug/L 02/16/23 09:54 10.190 UCarbon tetrachloride 1.00 0.150 ug/L 02/16/23 09:54 10.150 UChlorobenzene 1.00 0.760 ug/L 02/16/23 09:54 10.760 UChloroethane 1.00 1.00 ug/L 02/16/23 09:54 11.00 UChloroform 1.00 0.320 ug/L 02/16/23 09:54 10.320 UChloromethane 1.00 0.200 ug/L 02/16/23 09:54 10.200 Ucis-1,2-Dichloroethene 5.00 0.500 ug/L 02/16/23 09:54 10.500 Ucis-1,3-Dichloropropene 1.00 0.240 ug/L 02/16/23 09:54 10.240 UDibromochloromethane 1.00 0.850 ug/L 02/16/23 09:54 10.850 UDichlorodifluoromethane 1.00 0.200 ug/L 02/16/23 09:54 10.200 UDiisopropyl ether 100 24.0 ug/L 02/16/23 09:54 124.0 UEthanol 1.00 0.500 ug/L 02/16/23 09:54 10.500 UEthylbenzene 1.00 0.530 ug/L 02/16/23 09:54 10.530 UIsopropylbenzene 1.00 0.220 ug/L 02/16/23 09:54 10.220 UMethyl tert-butyl ether 5.00 3.00 ug/L 02/16/23 09:54 13.00 UMethylene Chloride 5.00 0.630 ug/L 02/16/23 09:54 10.630 Um-Xylene & p-Xylene 5.00 3.00 ug/L 02/16/23 09:54 13.00 UNaphthalene Eurofins Pensacola Page 15 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Lab Sample ID: 400-233070-5Client Sample ID: PW3 Matrix: WaterDate Collected: 02/08/23 10:01 Date Received: 02/10/23 08:53 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 0.760 U 1.00 0.760 ug/L 02/16/23 09:54 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier n-Butylbenzene 1.00 0.690 ug/L 02/16/23 09:54 10.690 UN-Propylbenzene 5.00 0.600 ug/L 02/16/23 09:54 10.600 Uo-Xylene 1.00 0.710 ug/L 02/16/23 09:54 10.710 Up-Cymene (p-Isopropyltoluene) 1.00 0.700 ug/L 02/16/23 09:54 10.700 Usec-Butylbenzene 1.00 1.00 ug/L 02/16/23 09:54 11.00 UStyrene 1.00 0.630 ug/L 02/16/23 09:54 10.630 Utert-Butylbenzene 1.00 0.900 ug/L 02/16/23 09:54 10.900 UTetrachloroethene 1.00 0.410 ug/L 02/16/23 09:54 10.410 UToluene 1.00 0.500 ug/L 02/16/23 09:54 10.500 Utrans-1,2-Dichloroethene 5.00 0.200 ug/L 02/16/23 09:54 10.200 Utrans-1,3-Dichloropropene 1.00 0.150 ug/L 02/16/23 09:54 10.150 UTrichloroethene 1.00 0.520 ug/L 02/16/23 09:54 10.520 UTrichlorofluoromethane 25.0 0.930 ug/L 02/16/23 09:54 10.930 UVinyl acetate 1.00 0.500 ug/L 02/16/23 09:54 10.500 UVinyl chloride 10.0 1.60 ug/L 02/16/23 09:54 11.60 UXylenes, Total 4-Bromofluorobenzene 99 72-119 02/16/23 09:54 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 97 02/16/23 09:54 175-126 Toluene-d8 (Surr)95 02/16/23 09:54 164-132 Eurofins Pensacola Page 16 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Lab Sample ID: 400-233070-6Client Sample ID: PW4 Matrix: WaterDate Collected: 02/08/23 10:15 Date Received: 02/10/23 08:53 Method: SM6200-B - Volatile Organic Compounds RL MDL 0.160 U 1.00 0.160 ug/L 02/16/23 10:16 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.180 ug/L 02/16/23 10:16 10.180 U1,1,1-Trichloroethane 1.00 0.500 ug/L 02/16/23 10:16 10.500 U1,1,2,2-Tetrachloroethane 5.00 0.210 ug/L 02/16/23 10:16 10.210 U1,1,2-Trichloroethane 1.00 0.500 ug/L 02/16/23 10:16 10.500 U1,1-Dichloroethane 1.00 0.500 ug/L 02/16/23 10:16 10.500 U1,1-Dichloroethene 1.00 0.500 ug/L 02/16/23 10:16 10.500 U1,1-Dichloropropene 1.00 0.900 ug/L 02/16/23 10:16 10.900 U1,2,3-Trichlorobenzene 5.00 0.840 ug/L 02/16/23 10:16 10.840 U1,2,3-Trichloropropane 1.00 0.820 ug/L 02/16/23 10:16 10.820 U1,2,4-Trichlorobenzene 1.00 0.820 ug/L 02/16/23 10:16 10.820 U1,2,4-Trimethylbenzene 1.00 0.230 ug/L 02/16/23 10:16 10.230 U1,2-Dibromoethane (EDB) 1.00 0.500 ug/L 02/16/23 10:16 10.500 U1,2-Dichlorobenzene 1.00 0.190 ug/L 02/16/23 10:16 10.190 U1,2-Dichloroethane 1.00 0.500 ug/L 02/16/23 10:16 10.500 U1,2-Dichloropropane 1.00 0.560 ug/L 02/16/23 10:16 10.560 U1,3,5-Trimethylbenzene 1.00 0.540 ug/L 02/16/23 10:16 10.540 U1,3-Dichlorobenzene 1.00 0.500 ug/L 02/16/23 10:16 10.500 U1,3-Dichloropropane 1.00 0.640 ug/L 02/16/23 10:16 10.640 U1,4-Dichlorobenzene 1.00 0.500 ug/L 02/16/23 10:16 10.500 U2,2-Dichloropropane 25.0 2.60 ug/L 02/16/23 10:16 12.60 U2-Butanone (MEK) 1.00 0.570 ug/L 02/16/23 10:16 10.570 U2-Chlorotoluene 25.0 1.40 ug/L 02/16/23 10:16 11.40 U2-Hexanone 1.00 0.560 ug/L 02/16/23 10:16 10.560 U4-Chlorotoluene 25.0 1.80 ug/L 02/16/23 10:16 11.80 U4-Methyl-2-pentanone (MIBK) 25.0 10.0 ug/L 02/16/23 10:16 110.0 UAcetone 1.00 0.130 ug/L 02/16/23 10:16 10.130 UBenzene 1.00 0.540 ug/L 02/16/23 10:16 10.540 UBromobenzene 1.00 0.210 ug/L 02/16/23 10:16 10.210 UBromochloromethane 1.00 0.500 ug/L 02/16/23 10:16 10.500 UBromodichloromethane 5.00 0.250 ug/L 02/16/23 10:16 10.250 UBromoform 1.00 0.980 ug/L 02/16/23 10:16 10.980 UBromomethane 1.00 0.190 ug/L 02/16/23 10:16 10.190 UCarbon tetrachloride 1.00 0.150 ug/L 02/16/23 10:16 10.150 UChlorobenzene 1.00 0.760 ug/L 02/16/23 10:16 10.760 UChloroethane 1.00 1.00 ug/L 02/16/23 10:16 11.00 UChloroform 1.00 0.320 ug/L 02/16/23 10:16 10.320 UChloromethane 1.00 0.200 ug/L 02/16/23 10:16 10.200 Ucis-1,2-Dichloroethene 5.00 0.500 ug/L 02/16/23 10:16 10.500 Ucis-1,3-Dichloropropene 1.00 0.240 ug/L 02/16/23 10:16 10.240 UDibromochloromethane 1.00 0.850 ug/L 02/16/23 10:16 10.850 UDichlorodifluoromethane 1.00 0.200 ug/L 02/16/23 10:16 10.200 UDiisopropyl ether 100 24.0 ug/L 02/16/23 10:16 124.0 UEthanol 1.00 0.500 ug/L 02/16/23 10:16 10.500 UEthylbenzene 1.00 0.530 ug/L 02/16/23 10:16 10.530 UIsopropylbenzene 1.00 0.220 ug/L 02/16/23 10:16 10.220 UMethyl tert-butyl ether 5.00 3.00 ug/L 02/16/23 10:16 13.00 UMethylene Chloride 5.00 0.630 ug/L 02/16/23 10:16 10.630 Um-Xylene & p-Xylene 5.00 3.00 ug/L 02/16/23 10:16 13.00 UNaphthalene Eurofins Pensacola Page 17 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Lab Sample ID: 400-233070-6Client Sample ID: PW4 Matrix: WaterDate Collected: 02/08/23 10:15 Date Received: 02/10/23 08:53 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 0.760 U 1.00 0.760 ug/L 02/16/23 10:16 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier n-Butylbenzene 1.00 0.690 ug/L 02/16/23 10:16 10.690 UN-Propylbenzene 5.00 0.600 ug/L 02/16/23 10:16 10.600 Uo-Xylene 1.00 0.710 ug/L 02/16/23 10:16 10.710 Up-Cymene (p-Isopropyltoluene) 1.00 0.700 ug/L 02/16/23 10:16 10.700 Usec-Butylbenzene 1.00 1.00 ug/L 02/16/23 10:16 11.00 UStyrene 1.00 0.630 ug/L 02/16/23 10:16 10.630 Utert-Butylbenzene 1.00 0.900 ug/L 02/16/23 10:16 10.900 UTetrachloroethene 1.00 0.410 ug/L 02/16/23 10:16 10.410 UToluene 1.00 0.500 ug/L 02/16/23 10:16 10.500 Utrans-1,2-Dichloroethene 5.00 0.200 ug/L 02/16/23 10:16 10.200 Utrans-1,3-Dichloropropene 1.00 0.150 ug/L 02/16/23 10:16 10.150 UTrichloroethene 1.00 0.520 ug/L 02/16/23 10:16 10.520 UTrichlorofluoromethane 25.0 0.930 ug/L 02/16/23 10:16 10.930 UVinyl acetate 1.00 0.500 ug/L 02/16/23 10:16 10.500 UVinyl chloride 10.0 1.60 ug/L 02/16/23 10:16 11.60 UXylenes, Total 4-Bromofluorobenzene 99 72-119 02/16/23 10:16 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 99 02/16/23 10:16 175-126 Toluene-d8 (Surr)96 02/16/23 10:16 164-132 Eurofins Pensacola Page 18 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Definitions/Glossary Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Qualifiers GC/MS VOA Qualifier Description J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Qualifier U Indicates the analyte was analyzed for but not detected. Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Pensacola Page 19 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Method: SM6200-B - Volatile Organic Compounds Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (72-119)(75-126)(64-132) BFB DBFM TOL 97 97 96400-233070-1 Percent Surrogate Recovery (Acceptance Limits) MW12 97 97 97400-233070-1 MS MW12 97 99 97400-233070-1 MSD MW12 99 96 96400-233070-2 MW13 99 98 96400-233070-3 MW14 98 99 97400-233070-4 MW15 99 97 95400-233070-5 PW3 99 99 96400-233070-6 PW4 97 97 97LCS 400-612669/1002 Lab Control Sample 98 99 96MB 400-612669/4 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene DBFM = Dibromofluoromethane TOL = Toluene-d8 (Surr) Eurofins Pensacola Page 20 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House GC/MS VOA Analysis Batch: 612669 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water SM6200-B400-233070-1 MW12 Total/NA Water SM6200-B400-233070-2 MW13 Total/NA Water SM6200-B400-233070-3 MW14 Total/NA Water SM6200-B400-233070-4 MW15 Total/NA Water SM6200-B400-233070-5 PW3 Total/NA Water SM6200-B400-233070-6 PW4 Total/NA Water SM6200-BMB 400-612669/4 Method Blank Total/NA Water SM6200-BLCS 400-612669/1002 Lab Control Sample Total/NA Water SM6200-B400-233070-1 MS MW12 Total/NA Water SM6200-B400-233070-1 MSD MW12 Total/NA Eurofins Pensacola Page 21 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Method: SM6200-B - Volatile Organic Compounds Client Sample ID: Method BlankLab Sample ID: MB 400-612669/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 612669 RL MDL 1,1,1,2-Tetrachloroethane 0.160 U 1.00 0.160 ug/L 02/16/23 08:02 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier 0.180 U 0.1801.00 ug/L 02/16/23 08:02 11,1,1-Trichloroethane 0.500 U 0.5001.00 ug/L 02/16/23 08:02 11,1,2,2-Tetrachloroethane 0.210 U 0.2105.00 ug/L 02/16/23 08:02 11,1,2-Trichloroethane 0.500 U 0.5001.00 ug/L 02/16/23 08:02 11,1-Dichloroethane 0.500 U 0.5001.00 ug/L 02/16/23 08:02 11,1-Dichloroethene 0.500 U 0.5001.00 ug/L 02/16/23 08:02 11,1-Dichloropropene 0.900 U 0.9001.00 ug/L 02/16/23 08:02 11,2,3-Trichlorobenzene 0.840 U 0.8405.00 ug/L 02/16/23 08:02 11,2,3-Trichloropropane 0.820 U 0.8201.00 ug/L 02/16/23 08:02 11,2,4-Trichlorobenzene 0.820 U 0.8201.00 ug/L 02/16/23 08:02 11,2,4-Trimethylbenzene 0.230 U 0.2301.00 ug/L 02/16/23 08:02 11,2-Dibromoethane (EDB) 0.500 U 0.5001.00 ug/L 02/16/23 08:02 11,2-Dichlorobenzene 0.190 U 0.1901.00 ug/L 02/16/23 08:02 11,2-Dichloroethane 0.500 U 0.5001.00 ug/L 02/16/23 08:02 11,2-Dichloropropane 0.560 U 0.5601.00 ug/L 02/16/23 08:02 11,3,5-Trimethylbenzene 0.540 U 0.5401.00 ug/L 02/16/23 08:02 11,3-Dichlorobenzene 0.500 U 0.5001.00 ug/L 02/16/23 08:02 11,3-Dichloropropane 0.640 U 0.6401.00 ug/L 02/16/23 08:02 11,4-Dichlorobenzene 0.500 U 0.5001.00 ug/L 02/16/23 08:02 12,2-Dichloropropane 2.60 U 2.6025.0 ug/L 02/16/23 08:02 12-Butanone (MEK) 0.570 U 0.5701.00 ug/L 02/16/23 08:02 12-Chlorotoluene 1.40 U 1.4025.0 ug/L 02/16/23 08:02 12-Hexanone 0.560 U 0.5601.00 ug/L 02/16/23 08:02 14-Chlorotoluene 1.80 U 1.8025.0 ug/L 02/16/23 08:02 14-Methyl-2-pentanone (MIBK) 10.0 U 10.025.0 ug/L 02/16/23 08:02 1Acetone 0.130 U 0.1301.00 ug/L 02/16/23 08:02 1Benzene 0.540 U 0.5401.00 ug/L 02/16/23 08:02 1Bromobenzene 0.210 U 0.2101.00 ug/L 02/16/23 08:02 1Bromochloromethane 0.500 U 0.5001.00 ug/L 02/16/23 08:02 1Bromodichloromethane 0.250 U 0.2505.00 ug/L 02/16/23 08:02 1Bromoform 0.980 U 0.9801.00 ug/L 02/16/23 08:02 1Bromomethane 0.190 U 0.1901.00 ug/L 02/16/23 08:02 1Carbon tetrachloride 0.150 U 0.1501.00 ug/L 02/16/23 08:02 1Chlorobenzene 0.760 U 0.7601.00 ug/L 02/16/23 08:02 1Chloroethane 1.00 U 1.001.00 ug/L 02/16/23 08:02 1Chloroform 0.320 U 0.3201.00 ug/L 02/16/23 08:02 1Chloromethane 0.200 U 0.2001.00 ug/L 02/16/23 08:02 1cis-1,2-Dichloroethene 0.500 U 0.5005.00 ug/L 02/16/23 08:02 1cis-1,3-Dichloropropene 0.240 U 0.2401.00 ug/L 02/16/23 08:02 1Dibromochloromethane 0.850 U 0.8501.00 ug/L 02/16/23 08:02 1Dichlorodifluoromethane 0.200 U 0.2001.00 ug/L 02/16/23 08:02 1Diisopropyl ether 24.0 U 24.0100 ug/L 02/16/23 08:02 1Ethanol 0.500 U 0.5001.00 ug/L 02/16/23 08:02 1Ethylbenzene 0.530 U 0.5301.00 ug/L 02/16/23 08:02 1Isopropylbenzene 0.220 U 0.2201.00 ug/L 02/16/23 08:02 1Methyl tert-butyl ether 3.00 U 3.005.00 ug/L 02/16/23 08:02 1Methylene Chloride 0.630 U 0.6305.00 ug/L 02/16/23 08:02 1m-Xylene & p-Xylene Eurofins Pensacola Page 22 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-612669/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 612669 RL MDL Naphthalene 3.00 U 5.00 3.00 ug/L 02/16/23 08:02 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier 0.760 U 0.7601.00 ug/L 02/16/23 08:02 1n-Butylbenzene 0.690 U 0.6901.00 ug/L 02/16/23 08:02 1N-Propylbenzene 0.600 U 0.6005.00 ug/L 02/16/23 08:02 1o-Xylene 0.710 U 0.7101.00 ug/L 02/16/23 08:02 1p-Cymene (p-Isopropyltoluene) 0.700 U 0.7001.00 ug/L 02/16/23 08:02 1sec-Butylbenzene 1.00 U 1.001.00 ug/L 02/16/23 08:02 1Styrene 0.630 U 0.6301.00 ug/L 02/16/23 08:02 1tert-Butylbenzene 0.900 U 0.9001.00 ug/L 02/16/23 08:02 1Tetrachloroethene 0.410 U 0.4101.00 ug/L 02/16/23 08:02 1Toluene 0.500 U 0.5001.00 ug/L 02/16/23 08:02 1trans-1,2-Dichloroethene 0.200 U 0.2005.00 ug/L 02/16/23 08:02 1trans-1,3-Dichloropropene 0.150 U 0.1501.00 ug/L 02/16/23 08:02 1Trichloroethene 0.520 U 0.5201.00 ug/L 02/16/23 08:02 1Trichlorofluoromethane 0.930 U 0.93025.0 ug/L 02/16/23 08:02 1Vinyl acetate 0.500 U 0.5001.00 ug/L 02/16/23 08:02 1Vinyl chloride 1.60 U 1.6010.0 ug/L 02/16/23 08:02 1Xylenes, Total 4-Bromofluorobenzene 98 72-119 02/16/23 08:02 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 99 02/16/23 08:02 1Dibromofluoromethane75-126 96 02/16/23 08:02 1Toluene-d8 (Surr)64-132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-612669/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 612669 1,1,1,2-Tetrachloroethane 50.0 42.82 ug/L 86 67 -131 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 1,1,1-Trichloroethane 50.0 38.14 ug/L 76 68 -130 1,1,2,2-Tetrachloroethane 50.0 43.93 ug/L 88 70 -131 1,1,2-Trichloroethane 50.0 42.93 ug/L 86 70 -130 1,1-Dichloroethane 50.0 41.20 ug/L 82 70 -130 1,1-Dichloroethene 50.0 41.61 ug/L 83 63 -134 1,1-Dichloropropene 50.0 40.74 ug/L 81 70 -130 1,2,3-Trichlorobenzene 50.0 51.12 ug/L 102 60 -138 1,2,3-Trichloropropane 50.0 42.57 ug/L 85 70 -130 1,2,4-Trichlorobenzene 50.0 49.69 ug/L 99 60 -140 1,2,4-Trimethylbenzene 50.0 43.15 ug/L 86 70 -130 1,2-Dibromoethane (EDB)50.0 44.47 ug/L 89 70 -130 1,2-Dichlorobenzene 50.0 45.18 ug/L 90 67 -130 1,2-Dichloroethane 50.0 38.28 ug/L 77 69 -130 1,2-Dichloropropane 50.0 42.33 ug/L 85 70 -130 1,3,5-Trimethylbenzene 50.0 41.79 ug/L 84 69 -130 1,3-Dichlorobenzene 50.0 44.73 ug/L 89 70 -130 1,3-Dichloropropane 50.0 44.39 ug/L 89 70 -130 1,4-Dichlorobenzene 50.0 44.61 ug/L 89 70 -130 2,2-Dichloropropane 50.0 41.46 ug/L 83 52 -135 Eurofins Pensacola Page 23 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-612669/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 612669 2-Butanone (MEK)200 159.6 ug/L 80 61 -145 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 2-Chlorotoluene 50.0 40.94 ug/L 82 70 -130 2-Hexanone 200 163.0 ug/L 82 65 -137 4-Chlorotoluene 50.0 41.14 ug/L 82 70 -130 4-Methyl-2-pentanone (MIBK)200 174.6 ug/L 87 69 -138 Acetone 200 144.0 ug/L 72 43 -160 Benzene 50.0 41.98 ug/L 84 70 -130 Bromobenzene 50.0 43.72 ug/L 87 70 -132 Bromochloromethane 50.0 43.72 ug/L 87 70 -130 Bromodichloromethane 50.0 41.68 ug/L 83 67 -133 Bromoform 50.0 45.14 ug/L 90 57 -140 Bromomethane 50.0 45.53 ug/L 91 10 -160 Carbon tetrachloride 50.0 38.32 ug/L 77 61 -137 Chlorobenzene 50.0 42.45 ug/L 85 70 -130 Chloroethane 50.0 38.12 ug/L 76 55 -141 Chloroform 50.0 40.47 ug/L 81 69 -130 Chloromethane 50.0 35.21 ug/L 70 58 -137 cis-1,2-Dichloroethene 50.0 39.51 ug/L 79 68 -130 cis-1,3-Dichloropropene 50.0 43.69 ug/L 87 69 -132 Dibromochloromethane 50.0 42.89 ug/L 86 67 -135 Dichlorodifluoromethane 50.0 33.39 ug/L 67 41 -146 Diisopropyl ether 50.0 43.46 ug/L 87 64 -132 Ethanol 2000 1114 ug/L 56 20 -160 Ethylbenzene 50.0 40.32 ug/L 81 70 -130 Isopropylbenzene 50.0 40.67 ug/L 81 70 -130 Methyl tert-butyl ether 50.0 43.34 ug/L 87 66 -130 Methylene Chloride 50.0 43.79 ug/L 88 66 -135 m-Xylene & p-Xylene 50.0 40.44 ug/L 81 70 -130 Naphthalene 50.0 57.89 ug/L 116 47 -149 n-Butylbenzene 50.0 42.56 ug/L 85 67 -130 N-Propylbenzene 50.0 42.06 ug/L 84 70 -130 o-Xylene 50.0 40.88 ug/L 82 70 -130 p-Cymene (p-Isopropyltoluene)50.0 41.76 ug/L 84 65 -130 sec-Butylbenzene 50.0 40.86 ug/L 82 66 -130 Styrene 50.0 41.80 ug/L 84 70 -130 tert-Butylbenzene 50.0 44.18 ug/L 88 64 -139 Tetrachloroethene 50.0 43.13 ug/L 86 65 -130 Toluene 50.0 41.56 ug/L 83 70 -130 trans-1,2-Dichloroethene 50.0 36.61 ug/L 73 70 -130 trans-1,3-Dichloropropene 50.0 42.17 ug/L 84 63 -130 Trichloroethene 50.0 43.20 ug/L 86 70 -130 Trichlorofluoromethane 50.0 40.65 ug/L 81 65 -138 Vinyl acetate 100 88.04 ug/L 88 26 -160 Vinyl chloride 50.0 41.17 ug/L 82 59 -136 Xylenes, Total 100 81.32 ug/L 81 70 -130 4-Bromofluorobenzene 72 -119 Surrogate 97 LCS LCS Qualifier Limits%Recovery Eurofins Pensacola Page 24 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-612669/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 612669 Dibromofluoromethane 75 -126 Surrogate 97 LCS LCS Qualifier Limits%Recovery 97Toluene-d8 (Surr)64 -132 Client Sample ID: MW12Lab Sample ID: 400-233070-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 612669 1,1,1,2-Tetrachloroethane 0.160 U 50.0 35.06 ug/L 70 59 -137 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,1,1-Trichloroethane 0.180 U 50.0 32.30 ug/L 65 57 -142 1,1,2,2-Tetrachloroethane 0.500 U 50.0 36.75 ug/L 74 66 -135 1,1,2-Trichloroethane 0.210 U 50.0 36.44 ug/L 73 66 -131 1,1-Dichloroethane 0.500 U 50.0 35.12 ug/L 70 61 -144 1,1-Dichloroethene 0.500 U 50.0 35.43 ug/L 71 54 -147 1,1-Dichloropropene 0.500 U 50.0 33.79 ug/L 68 65 -136 1,2,3-Trichlorobenzene 0.900 U 50.0 39.61 ug/L 79 43 -145 1,2,3-Trichloropropane 0.840 U 50.0 35.25 ug/L 70 65 -133 1,2,4-Trichlorobenzene 0.820 U 50.0 37.51 ug/L 75 39 -148 1,2,4-Trimethylbenzene 0.820 U 50.0 31.87 ug/L 64 50 -139 1,2-Dibromoethane (EDB)0.230 U 50.0 37.41 ug/L 75 64 -132 1,2-Dichlorobenzene 0.500 U 50.0 35.03 ug/L 70 52 -137 1,2-Dichloroethane 0.190 U 50.0 32.19 ug/L 64 60 -141 1,2-Dichloropropane 0.500 U 50.0 36.41 ug/L 73 66 -137 1,3,5-Trimethylbenzene 0.560 U 50.0 31.82 ug/L 64 52 -135 1,3-Dichlorobenzene 0.540 U 50.0 34.27 ug/L 69 54 -135 1,3-Dichloropropane 0.500 U 50.0 37.24 ug/L 74 66 -133 1,4-Dichlorobenzene 0.640 U 50.0 34.19 ug/L 68 53 -135 2,2-Dichloropropane 0.500 U 50.0 34.88 ug/L 70 42 -144 2-Butanone (MEK)2.60 U 200 132.1 ug/L 66 55 -150 2-Chlorotoluene 0.570 U 50.0 31.24 ug/L 62 53 -134 2-Hexanone 1.40 U 200 135.9 ug/L 68 65 -140 4-Chlorotoluene 0.560 U 50.0 31.55 ug/L 63 54 -133 4-Methyl-2-pentanone (MIBK)1.80 U 200 146.9 ug/L 73 63 -146 Acetone 10.0 U 200 111.6 ug/L 56 43 -150 Benzene 0.130 U 50.0 35.60 ug/L 71 56 -142 Bromobenzene 0.540 U 50.0 34.92 ug/L 70 59 -136 Bromochloromethane 0.210 U 50.0 38.56 ug/L 77 64 -140 Bromodichloromethane 0.500 U 50.0 35.09 ug/L 70 59 -143 Bromoform 0.250 U 50.0 37.60 ug/L 75 50 -140 Bromomethane 0.980 U 50.0 43.54 ug/L 87 10 -150 Carbon tetrachloride 0.190 U 50.0 32.72 ug/L 65 55 -145 Chlorobenzene 0.150 U 50.0 34.38 ug/L 69 64 -130 Chloroethane 0.760 U 50.0 35.16 ug/L 70 50 -150 Chloroform 1.01 50.0 35.18 ug/L 68 60 -141 Chloromethane 0.320 U 50.0 32.48 ug/L 65 49 -148 cis-1,2-Dichloroethene 0.200 U 50.0 34.08 ug/L 68 59 -143 cis-1,3-Dichloropropene 0.500 U 50.0 37.03 ug/L 74 57 -140 Dibromochloromethane 0.240 U 50.0 35.69 ug/L 71 56 -143 Eurofins Pensacola Page 25 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: MW12Lab Sample ID: 400-233070-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 612669 Dichlorodifluoromethane 0.850 U 50.0 31.49 ug/L 63 16 -150 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Diisopropyl ether 0.200 U 50.0 37.64 ug/L 75 60 -144 Ethanol 24.0 U 2000 722.6 ug/L 36 10 -150 Ethylbenzene 0.500 U 50.0 32.32 ug/L 65 58 -131 Isopropylbenzene 0.530 U 50.0 31.60 ug/L 63 56 -133 Methyl tert-butyl ether 16.3 50.0 52.54 ug/L 73 59 -137 Methylene Chloride 3.00 U 50.0 35.65 ug/L 71 60 -146 m-Xylene & p-Xylene 0.630 U 50.0 32.03 ug/L 64 57 -130 Naphthalene 3.00 U 50.0 52.87 ug/L 106 25 -150 n-Butylbenzene 0.760 U 50.0 30.66 ug/L 61 41 -142 N-Propylbenzene 0.690 U 50.0 32.58 ug/L 65 51 -138 o-Xylene 0.600 U 50.0 32.25 ug/L 65 61 -130 p-Cymene (p-Isopropyltoluene)0.710 U 50.0 30.72 ug/L 61 48 -139 sec-Butylbenzene 0.700 U 50.0 30.52 ug/L 61 50 -138 Styrene 1.00 U 50.0 33.10 ug/L 66 58 -131 tert-Butylbenzene 0.630 U 50.0 33.54 ug/L 67 54 -146 Tetrachloroethene 0.900 U 50.0 34.18 ug/L 68 52 -133 Toluene 0.410 U 50.0 33.48 ug/L 67 65 -130 trans-1,2-Dichloroethene 0.500 U 50.0 32.62 ug/L 65 61 -143 trans-1,3-Dichloropropene 0.200 U 50.0 34.81 ug/L 70 53 -133 Trichloroethene 0.150 U 50.0 35.65 ug/L 71 64 -136 Trichlorofluoromethane 0.520 U 50.0 35.06 ug/L 70 54 -150 Vinyl acetate 0.930 U 100 83.55 ug/L 84 26 -150 Vinyl chloride 0.500 U 50.0 38.17 ug/L 76 46 -150 Xylenes, Total 1.60 U 100 64.28 ug/L 64 59 -130 4-Bromofluorobenzene 72 -119 Surrogate 97 MS MS Qualifier Limits%Recovery 97Dibromofluoromethane 75 -126 97Toluene-d8 (Surr)64 -132 Client Sample ID: MW12Lab Sample ID: 400-233070-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 612669 1,1,1,2-Tetrachloroethane 0.160 U 50.0 40.19 ug/L 80 59 -137 14 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 1,1,1-Trichloroethane 0.180 U 50.0 37.12 ug/L 74 57 -142 14 30 1,1,2,2-Tetrachloroethane 0.500 U 50.0 43.23 ug/L 86 66 -135 16 30 1,1,2-Trichloroethane 0.210 U 50.0 42.21 ug/L 84 66 -131 15 30 1,1-Dichloroethane 0.500 U 50.0 40.22 ug/L 80 61 -144 14 30 1,1-Dichloroethene 0.500 U 50.0 38.77 ug/L 78 54 -147 9 30 1,1-Dichloropropene 0.500 U 50.0 39.04 ug/L 78 65 -136 14 30 1,2,3-Trichlorobenzene 0.900 U 50.0 43.73 ug/L 87 43 -145 10 30 1,2,3-Trichloropropane 0.840 U 50.0 42.11 ug/L 84 65 -133 18 30 1,2,4-Trichlorobenzene 0.820 U 50.0 41.56 ug/L 83 39 -148 10 30 1,2,4-Trimethylbenzene 0.820 U 50.0 38.47 ug/L 77 50 -139 19 30 1,2-Dibromoethane (EDB)0.230 U 50.0 43.56 ug/L 87 64 -132 15 30 Eurofins Pensacola Page 26 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: MW12Lab Sample ID: 400-233070-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 612669 1,2-Dichlorobenzene 0.500 U 50.0 40.92 ug/L 82 52 -137 15 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 1,2-Dichloroethane 0.190 U 50.0 37.55 ug/L 75 60 -141 15 30 1,2-Dichloropropane 0.500 U 50.0 40.99 ug/L 82 66 -137 12 30 1,3,5-Trimethylbenzene 0.560 U 50.0 38.17 ug/L 76 52 -135 18 30 1,3-Dichlorobenzene 0.540 U 50.0 40.09 ug/L 80 54 -135 16 30 1,3-Dichloropropane 0.500 U 50.0 43.26 ug/L 87 66 -133 15 30 1,4-Dichlorobenzene 0.640 U 50.0 40.17 ug/L 80 53 -135 16 30 2,2-Dichloropropane 0.500 U 50.0 39.20 ug/L 78 42 -144 12 31 2-Butanone (MEK)2.60 U 200 163.8 ug/L 82 55 -150 21 30 2-Chlorotoluene 0.570 U 50.0 37.05 ug/L 74 53 -134 17 30 2-Hexanone 1.40 U 200 165.3 ug/L 83 65 -140 20 30 4-Chlorotoluene 0.560 U 50.0 36.76 ug/L 74 54 -133 15 30 4-Methyl-2-pentanone (MIBK)1.80 U 200 177.3 ug/L 89 63 -146 19 30 Acetone 10.0 U 200 136.5 ug/L 68 43 -150 20 30 Benzene 0.130 U 50.0 40.68 ug/L 81 56 -142 13 30 Bromobenzene 0.540 U 50.0 40.55 ug/L 81 59 -136 15 30 Bromochloromethane 0.210 U 50.0 42.90 ug/L 86 64 -140 11 30 Bromodichloromethane 0.500 U 50.0 39.82 ug/L 80 59 -143 13 30 Bromoform 0.250 U 50.0 43.26 ug/L 87 50 -140 14 30 Bromomethane 0.980 U 50.0 43.32 ug/L 87 10 -150 1 50 Carbon tetrachloride 0.190 U 50.0 37.24 ug/L 74 55 -145 13 30 Chlorobenzene 0.150 U 50.0 39.91 ug/L 80 64 -130 15 30 Chloroethane 0.760 U 50.0 37.91 ug/L 76 50 -150 8 30 Chloroform 1.01 50.0 40.26 ug/L 79 60 -141 13 30 Chloromethane 0.320 U 50.0 36.38 ug/L 73 49 -148 11 31 cis-1,2-Dichloroethene 0.200 U 50.0 38.92 ug/L 78 59 -143 13 30 cis-1,3-Dichloropropene 0.500 U 50.0 42.69 ug/L 85 57 -140 14 30 Dibromochloromethane 0.240 U 50.0 40.81 ug/L 82 56 -143 13 30 Dichlorodifluoromethane 0.850 U 50.0 33.60 ug/L 67 16 -150 6 31 Diisopropyl ether 0.200 U 50.0 45.10 ug/L 90 60 -144 18 30 Ethanol 24.0 U 2000 1075 ug/L 54 10 -150 39 40 Ethylbenzene 0.500 U 50.0 37.94 ug/L 76 58 -131 16 30 Isopropylbenzene 0.530 U 50.0 37.38 ug/L 75 56 -133 17 30 Methyl tert-butyl ether 16.3 50.0 58.47 ug/L 84 59 -137 11 30 Methylene Chloride 3.00 U 50.0 41.83 ug/L 84 60 -146 16 32 m-Xylene & p-Xylene 0.630 U 50.0 37.21 ug/L 74 57 -130 15 30 Naphthalene 3.00 U 50.0 54.46 ug/L 109 25 -150 3 30 n-Butylbenzene 0.760 U 50.0 37.03 ug/L 74 41 -142 19 31 N-Propylbenzene 0.690 U 50.0 38.62 ug/L 77 51 -138 17 30 o-Xylene 0.600 U 50.0 37.96 ug/L 76 61 -130 16 30 p-Cymene (p-Isopropyltoluene)0.710 U 50.0 36.72 ug/L 73 48 -139 18 30 sec-Butylbenzene 0.700 U 50.0 36.72 ug/L 73 50 -138 18 30 Styrene 1.00 U 50.0 38.91 ug/L 78 58 -131 16 30 tert-Butylbenzene 0.630 U 50.0 39.73 ug/L 79 54 -146 17 30 Tetrachloroethene 0.900 U 50.0 40.14 ug/L 80 52 -133 16 30 Toluene 0.410 U 50.0 38.85 ug/L 78 65 -130 15 30 trans-1,2-Dichloroethene 0.500 U 50.0 39.67 ug/L 79 61 -143 20 30 trans-1,3-Dichloropropene 0.200 U 50.0 40.40 ug/L 81 53 -133 15 30 Trichloroethene 0.150 U 50.0 41.27 ug/L 83 64 -136 15 30 Eurofins Pensacola Page 27 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: MW12Lab Sample ID: 400-233070-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 612669 Trichlorofluoromethane 0.520 U 50.0 38.49 ug/L 77 54 -150 9 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Vinyl acetate 0.930 U 100 97.89 ug/L 98 26 -150 16 33 Vinyl chloride 0.500 U 50.0 42.27 ug/L 85 46 -150 10 30 Xylenes, Total 1.60 U 100 75.17 ug/L 75 59 -130 16 30 4-Bromofluorobenzene 72 -119 Surrogate 97 MSD MSD Qualifier Limits%Recovery 99Dibromofluoromethane 75 -126 97Toluene-d8 (Surr)64 -132 Eurofins Pensacola Page 28 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: Terraquest Environmental Consultants, PC Job ID: 400-233070-1 Project/Site: Springs Road Gas House Client Sample ID: MW12 Lab Sample ID: 400-233070-1 Matrix: WaterDate Collected: 02/08/23 09:15 Date Received: 02/10/23 08:53 Analysis SM6200-B WPD02/16/23 08:241 EET PEN612669 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW13 Lab Sample ID: 400-233070-2 Matrix: WaterDate Collected: 02/08/23 09:24 Date Received: 02/10/23 08:53 Analysis SM6200-B WPD02/16/23 08:461 EET PEN612669 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW14 Lab Sample ID: 400-233070-3 Matrix: WaterDate Collected: 02/08/23 09:32 Date Received: 02/10/23 08:53 Analysis SM6200-B WPD02/16/23 09:091 EET PEN612669 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW15 Lab Sample ID: 400-233070-4 Matrix: WaterDate Collected: 02/08/23 09:44 Date Received: 02/10/23 08:53 Analysis SM6200-B WPD02/16/23 09:321 EET PEN612669 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: PW3 Lab Sample ID: 400-233070-5 Matrix: WaterDate Collected: 02/08/23 10:01 Date Received: 02/10/23 08:53 Analysis SM6200-B WPD02/16/23 09:541 EET PEN612669 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: PW4 Lab Sample ID: 400-233070-6 Matrix: WaterDate Collected: 02/08/23 10:15 Date Received: 02/10/23 08:53 Analysis SM6200-B WPD02/16/23 10:161 EET PEN612669 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Method Blank Lab Sample ID: MB 400-612669/4 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis SM6200-B WPD02/16/23 08:021 EET PEN612669 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Eurofins Pensacola Page 29 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: Terraquest Environmental Consultants, PC Job ID: 400-233070-1 Project/Site: Springs Road Gas House Client Sample ID: Lab Control Sample Lab Sample ID: LCS 400-612669/1002 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis SM6200-B WPD02/16/23 07:191 EET PEN612669 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW12 Lab Sample ID: 400-233070-1 MS Matrix: WaterDate Collected: 02/08/23 09:15 Date Received: 02/10/23 08:53 Analysis SM6200-B WPD02/16/23 12:151 EET PEN612669 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW12 Lab Sample ID: 400-233070-1 MSD Matrix: WaterDate Collected: 02/08/23 09:15 Date Received: 02/10/23 08:53 Analysis SM6200-B WPD02/16/23 12:371 EET PEN612669 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Laboratory References: EET PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Pensacola Page 30 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Method Summary Job ID: 400-233070-1Client: Terraquest Environmental Consultants, PC Project/Site: Springs Road Gas House Method Method Description LaboratoryProtocol SMSM6200-B Volatile Organic Compounds EET PEN SW8465030BPurge and Trap EET PEN Protocol References: SM = "Standard Methods For The Examination Of Water And Wastewater" SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: EET PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Pensacola Page 31 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Accreditation/Certification Summary Client: Terraquest Environmental Consultants, PC Job ID: 400-233070-1 Project/Site: Springs Road Gas House Laboratory: Eurofins Pensacola Unless otherwise noted, all analytes for this laboratory were covered under each accreditation/certification below. Authority Program Identification Number Expiration Date North Carolina (WW/SW)State 314 12-31-23 The following analytes are included in this report, but the laboratory is not certified by the governing authority. This list may include analytes for which the agency does not offer certification. Analysis Method Prep Method Matrix Analyte SM6200-B Water 2-Butanone (MEK) SM6200-B Water 2-Hexanone SM6200-B Water 4-Methyl-2-pentanone (MIBK) SM6200-B Water Acetone SM6200-B Water Vinyl acetate Eurofins Pensacola Page 32 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 33 of 34 2/17/2023 1234567 8 9 10 11 12 13 14 15 Login Sample Receipt Checklist Client: Terraquest Environmental Consultants, PC Job Number: 400-233070-1 Login Number: 233070 Question Answer Comment Creator: Perez, Trina M List Source: Eurofins Pensacola List Number: 1 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. TrueThe cooler's custody seal, if present, is intact. N/ASample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded.0.9°C IR-11 TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. N/ASample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Pensacola Page 34 of 34 2/17/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15