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Home My WebLink AboutMO-28375_47627_CA_MRP_20221213 100 East Ruffin Street, Mebane, North Carolina 27302 Telephone (919) 563-9091 ·Facsimile (919) 563-9095 www.terraquestpc.com MONITORING REPORT (December 1, 2022 sampling event) BARKER’S GROCERY-2 104 HOUPE ROAD STATESVILLE, IREDELL COUNTY, NC, 28625-9501 Latitude: 35.84112° N Longitude: -80.86818° W Release Information: Date Discovered: January 6, 2021 (Laboratory Confirmation) Estimated Release Quantity: Unknown Release Cause/Source: Commercial Underground Storage Tank System Facility ID No.: 0-027378 NCDWM-UST Incident No.: 47627 (8489 closed via NFA) UST Capacities: 1990 closure: (1) 2,000-gallon diesel, (1) 560-gallon kerosene, (1) 1,000-gallon, (1) 1,065-gallon, and (1) 2,000-gallon gasoline 2020 closure: (1) 4,000-gallon diesel, (1) 2,000-gallon kerosene, (3) 8,000-gallon gasoline Responsible Party: Property Owners: Beroth Oil Company Don & Sue Barker P.O. Box 4089 131 Dunlap Loop Winston-Salem, NC 27150 Statesville, NC 28625 Terraquest Project No. 09606 December 13, 2022 Monitoring Report (12/1/22) Beroth Oil Company, Inc. Prepared by: Terraquest Environmental Consultants, P.C. (#47627) Barker’s Grocery-2 Report Prepared: December 13, 2022 i Statesville, NC CERTIFICATION FOR THE SUBMITTAL OF AN ENVIRONMENTAL / GEOLOGICAL ASSESSMENT Attached is the Monitoring Report for: Site Name: Barker’s Grocery Address: 104 Houpe Road City: Statesville State: NC Zip Code: 28625-9501 Property Owner: Don & Sue Barker Address: 131 Dunlap Loop City: Statesville State: NC Zip Code: 28625 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 (12/1/22) Beroth Oil Company, Inc. Prepared by: Terraquest Environmental Consultants, P.C. (#47627) Barker’s Grocery-2 Report Prepared: December 13, 2022 ii Statesville, NC TABLE OF CONTENTS ENVIRONMENTAL ACRONYMS ....................................................................................................... iii EXECUTIVE SUMMARY .................................................................................................................... iv 1.0 INTRODUCTION ................................................................................................................... 1 2.0 SITE HISTORY AND CHARACTERIZATION ............................................................................. 1 3.0 SOIL QUALITY ASSESSMENT ................................................................................................ 3 4.0 GROUNDWATER QUALITY ASSESSMENT ............................................................................ 5 5.0 CONCLUSIONS ..................................................................................................................... 6 6.0 LIMITATIONS ....................................................................................................................... 6 REFERENCES .................................................................................................................................... 7 TABLES 1. Site History (UST System Information) 2. Surrounding Property Owners 3. Water Supply Well Information 4. Summary of Soil Sampling Results – 2020 UST Closure 5. Summary of Soil Sampling Results – 7-2021 Risk Assessment 6. Monitoring Well Construction Information 7. Summary of Groundwater Sampling Results FIGURES 1. Site Location Map 2. Site Vicinity Map 3. Site Layout Map 4. Soil Sample Location Map 5. Potentiometric Surface Map (12/1/22) 6. Groundwater Analytical Results (12/1/22) APPENDICES A. Technical Methods/Standard Procedures B. Groundwater Data C. Analytical Report ENVIRONMENTAL ACRONYMS Monitoring Report (12/1/22) Beroth Oil Company, Inc. Prepared by: Terraquest Environmental Consultants, P.C. (#47627) Barker’s Grocery-2 Report Prepared: December 13, 2022 iii Statesville, 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 UST Underground Storage Tank VOA Volatile Organic Analysis VOC Volatile Organic Compound VPH Volatile Petroleum Hydrocarbons XP Explosion Proof Monitoring Report (12/1/22) Beroth Oil Company, Inc. Prepared by: Terraquest Environmental Consultants, P.C. (#47627) Barker’s Grocery-2 Report Prepared: December 13, 2022 iv Statesville, NC EXECUTIVE SUMMARY Terraquest Environmental Consultants, P.C. has performed a groundwater sampling event for the Barker’s Grocery 2 petroleum UST release incident. The site is in Statesville, Iredell County, North Carolina and the work was performed for the responsible party, Beroth Oil Company. Recent assessment activities have confirmed the absence of GCL violations in the five sampled wells at the site. With the reported groundwater flow direction and lack of GCL violations, Terraquest recommends taking steps toward closure for this release incident. The Risk Ranking should be lowered. Monitoring Report (12/1/22) Beroth Oil Company, Inc. Prepared by: Terraquest Environmental Consultants, P.C. (#47627) Barker’s Grocery-2 Report Prepared: December 13, 2022 1 Statesville, NC 1.0 INTRODUCTION On behalf of the responsible party, Beroth Oil Company, Inc., Terraquest Environmental Consultants, P.C. performed a groundwater sampling event in December 2022 for the Barkers Grocery-2 release incident. The site is located in Statesville, Iredell County, North Carolina. The work concerns the release incident discovered during the 12/2020 UST closure, Incident 47627. A previous release incident (8489) was opened and closed at this site. Activities in this report were pre-approved on ePATA 8489/47627-038. Note that this is the second groundwater sampling event since the April 4-8, 2022 Mobile Multi- Phase Extraction (MMPE) performed to reduce GCL violations as a measure of lowering risk to a lateral water supply well. The site location, vicinity, and layout are depicted in Figures 1, 2, and 3, respectively. Terraquest’s technical methods and standard procedures are detailed in Appendix A. 2.0 SITE HISTORY AND CHARACTERIZATION Beroth Oil Company is the owner of two generations of tanks at this site. As shown in Table 1, the first set of tanks included 1, 2,000-gallon diesel, 1, 560-gallon kerosene, 1, 1,000-gallon gasoline, 1, 1,056-gallon gasoline, and one 2,000-gallon kerosene. The second generation of tanks included 1, 4,000-gallon diesel, 1, 2,000-gallon kerosene, and 3, 8,000-gallon gasoline. The first generation of tanks were closed in 1990 and the second in 2020. Further tank details are provided in Table 1. The site is located on Hwy 21 in a rural area north of Statesville, NC. Land use surrounding the facility is chiefly residential with some businesses located along Turnersburg Highway. All properties within 1,500 feet of the site are zoned R-20 (residential) according to the Iredell County website. Surrounding property owner information is provided in Table 2. Monitoring Report (12/1/22) Beroth Oil Company, Inc. Prepared by: Terraquest Environmental Consultants, P.C. (#47627) Barker’s Grocery-2 Report Prepared: December 13, 2022 2 Statesville, NC A prior release incident (#8489) identified soil contamination but no groundwater contamination in excess of applicable limits. A Soil Vapor Extraction (SVE) remedial system was installed in April 2012 and was active until its shut down in December 2016. Following public notice, the NCWM- UST issued a No Further Action Letter for the #8489 release incident. As part of closure activities in December 2020, Terraquest personnel collected samples around the UST basin and at prescribed locations near product lines and dispensers. The large amount of pea gravel in the UST basin prevented the collection of soil samples directly beneath the tanks and a groundwater monitoring well was installed instead. The analytical results of a groundwater sample collected from that well (MW1), revealed the presence of petroleum-type contaminants at concentrations exceeding the 2L Standards. The UST Closure Report (UST-12) (January 29, 2021) previously submitted to the NCDWM-UST detailed these activities. Following review of the UST Closure Report, the NCDWM-UST’s March 19, 2021 Acknowledgement of Report Receipt correspondence agreed with the conclusions to move forward with risk-ranking activities similar to an LSA. Prior work associated with the closed release incident 8489, identified two sole-source potable wells within a 1,500-foot radius of the site. One of these wells is located within 1,000 feet of the source area. A production well operated by Iredell County was found at a distance of 1,570 feet from the source area. This well provides municipal water for the entire surrounding community not using their own potable wells. Two non-potable use wells were also identified within 1,500 feet of the site. The well locations are shown on Figure 2 and detailed on Table 3. These wells were confirmed through July 7, 2021 reconnaissance efforts. Terraquest inquired with the property owner of the potable well located within 1,000 feet of the release area if he would be interested in connecting to the municipal water supply system. The bare-chested man Monitoring Report (12/1/22) Beroth Oil Company, Inc. Prepared by: Terraquest Environmental Consultants, P.C. (#47627) Barker’s Grocery-2 Report Prepared: December 13, 2022 3 Statesville, NC quickly closed the door while stating that he was “not interested”. The release incident remains a High Risk based on this sole-source well use. As part of the reconnaissance effort, Terraquest also searched for any surface water bodies within a 500-foot radius of the site. A dried pond basin was noted to the west of the site in the location shown on Figure 2. The USGS Statesville East and Statesville West quadrangle maps of the area show the presence of Fifth Creek located to the north. The Iredell County GIS website shows un-named tributaries to Fifth Creek in the locations shown on Figure 2. The dried pond observed by Terraquest was confirmed by this website as located to the west of the site. The site is located in the Piedmont Physiographic Province of North Carolina. The Piedmont is characterized by a hummocky terrain with variable topographic relief. The site lies within the Inner Piedmont Lithotectonic Province of North Carolina, a subdivision of the Appalachian Piedmont Province. The Inner Piedmont Belt primarily consists of metamorphosed sedimentary and volcanic rocks of upper Proterozoic to lower Cambrian age. Specifically, the lithology noted for the site on the Geologic Map of North Carolina consists of gneiss’s and schists that are inequigranular, have locally abundant potassic feldspar and garnet, are interlayered and gradational with calc-silicate rock, and sillimanite-mica shist, mica schist, and amphibolite may be present (Brown, et al., 1985). The lithology has been mapped by Goldsmith, et al. (1988) as upper Proterozoic - Cambrian biotite gneiss. This unit is composed of thin to thick layered biotite- quartz-feldspar gneiss with local layers of mica schist. The encountered lithology at the site was a silt (ML) from the surface to a depth of 45 feet below ground level (BGL). The silt was logged as soft, brown/dark brown/orange/maroon/tan, with varying amounts of mica. 3.0 SOIL QUALITY ASSESSMENT During the December 2020 UST closure, Soil samples were collected every ten feet along the product lines and beneath each of the four dispensers. The product line samples were collected 5 feet BGL and the dispenser samples at 3 feet BGL. The tanks were bed in such a large volume Monitoring Report (12/1/22) Beroth Oil Company, Inc. Prepared by: Terraquest Environmental Consultants, P.C. (#47627) Barker’s Grocery-2 Report Prepared: December 13, 2022 4 Statesville, NC of pea gravel that native soil was not encountered by the excavator performing removal. The prior removal of tanks was likely the reason that so much pea gravel was present during the current work. Without removing all of the pea gravel, which fills in each scoop removed, it was not possible to reasonably reach native soil. Additional support via shoring was required to prevent undermining of the excavated area and possible structural damage to the onsite building and was outside the scope of this project. The dispenser and product line samples were collected from the track-hoe bucket and groundwater samples from a new, disposable bailer. All samples were collected by Terraquest personnel donning new disposable nitrile gloves. Samples were then placed into laboratory containers, preserved with acid as required and packed on ice pending onsite lab analysis. Chain- of-custody documentation was maintained for each sample. All UST closure soil samples were analyzed utilizing UVF technology targeting TPH GRO and DRO. Those results reported no TPH Action Level exceedances in any sample. Sample IDs, depths, dates, and analytical results are listed in Table 4 and the locations are provided on Figure 4. As part of additional risk assessment activities, Terraquest personnel supervised the collection of soil samples as close to the bottom of the tank basin as possible on July 7, 2021. Following utility location by a private locator, a soil boring, B1, was advanced at the location shown on Figure 4. A sample could not be collected from directly beneath the UST basin as it was filled with pea gravel to an unknown depth. The boring location was away from septic lines and other utilities in the area. A NC-licensed driller advanced the boring using a Geoprobe 7822 drilling unit. Soil samples were collected from beneath the location of the former USTs in intervals until the water table was reached. The exact intervals were from 20-23 feet BGL and from 30-33 feet BGL. An additional sample was collected within the water table from 37-40 feet BGL. The samples were placed into the appropriate laboratory-supplied containers, labeled, packed on ice, and transported to an NC-certified lab for analysis per 8260 and MADEP VPH. Monitoring Report (12/1/22) Beroth Oil Company, Inc. Prepared by: Terraquest Environmental Consultants, P.C. (#47627) Barker’s Grocery-2 Report Prepared: December 13, 2022 5 Statesville, NC The analytical results reveal the presence of petroleum-type contaminants, however, neither of the vadose zone soil samples, 20-23’ and 30-33’, had reported concentrations in excess of the soil-to-groundwater maximum soil contaminant concentrations (STG MSCCs). The analytical results are summarized in Table 5. 4.0 GROUNDWATER QUALITY ASSESSMENT Prior to purging and sampling the monitoring well network on December 1, 2022, Terraquest personnel first measured the depth-to-water in each well. Those measurements were used in conjunction with surveyed top of casing elevations to determine the direction of groundwater flow. Figure 5 was generated to show the potentiometric surface which is decreasing to the east/northeast. Groundwater elevation data is summarized in Table 6. Historical groundwater data is shown in Appendix B that reveals that, on average, the water table has dropped by over four feet since last measured in June 2022. On December 1, 2022, Terraquest personnel collected groundwater samples from monitoring wells TQMW1-TQMW5. Prior to sampling, each well was purged of at least three well volumes of water using a new disposable bailer. Bailers were then used to retrieve a representative groundwater sample from each well. Upon retrieval, the samples were placed into the appropriate laboratory-prepared sample containers, labeled, and packed on ice pending shipment to a North Carolina-certified laboratory for analysis. All the collected groundwater samples were submitted for analysis per 6200B for VOC’s. The groundwater results from the December 1, 2022 sampling event reveal no GCL violations. Note that the April 2022 MMPE event was previously performed with that goal in mind and was backed up with the June 2022 and now December 2022 data showing a stable plume. While 2L Standard violations remain, they are below the GCLs and are located in an upgradient and lateral direction from the sole active water supply well ranking this site a High Risk. Monitoring Report (12/1/22) Beroth Oil Company, Inc. Prepared by: Terraquest Environmental Consultants, P.C. (#47627) Barker’s Grocery-2 Report Prepared: December 13, 2022 6 Statesville, NC Groundwater analytical results are summarized on Figure 6 and detailed on Table 7. Historical groundwater data is shown in Appendix B. The full analytical report is provided in Appendix C. There is no GCL plume reported. The 2L Standard violation plume covers an area of 6,600 square feet. That is a reduction from the 8,700 square feet reported for the previous October 2021 sampling event and is the same size and shape as the June 2022 plume. The plume is stable with many contaminants reducing in concentration. 5.0 CONCLUSIONS Recent assessment activities have confirmed the absence of GCL violations in the five sampled wells at the site. With the reported groundwater flow direction and lack of GCL violations, As this is the second event confirming the absence of GCL violations and stability of the plume, Terraquest recommends moving this release incident toward closure. 6.0 LIMITATIONS This report is limited to the investigation of petroleum hydrocarbons only and does not imply that other unforeseen adverse impacts to the environment are not present at the 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, elevation, 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 (12/1/22) Beroth Oil Company, Inc. Prepared by: Terraquest Environmental Consultants, P.C. (#47627) Barker’s Grocery-2 Report Prepared: December 13, 2022 7 Statesville, NC REFERENCES Brown, et al, 1985, Geologic Map of North Carolina, North Carolina Department of Natural Resources and Community Development, 1:500,000 scale. Goldsmith, R., D.J. Milton, and J.W. Horton, Jr. 1988. Geologic Map of the Charlotte 1o x 2o Quadrangle, North Carolina and South Carolina. USGS Miscellaneous Investigations Series Map I-1251-E. TABLES Table 1 Date: 12/13/22 Facility ID No. 0-027378 UST Product Capacity (gallons)Date Installed Date Closed Release Discovered? A1 Diesel 4,000 7/1/1990 12/2/20 NO A2 Kerosene 2,000 7/1/1990 12/2/20 NO A3 Gasoline 8,000 7/1/1990 12/2/20 YES A4 Gasoline 8,000 7/1/1990 12/2/20 YES A5 Gasoline 8,000 6/8/1990 12/2/20 YES 1 Diesel 2,000 1/1/1964 6/8/1990 NO 2 Kerosene 560 1/1/1964 6/8/1990 YES 3 Gasoline 1,000 1/1/1964 6/8/1990 NO 4 Gasoline 1,056 1/1/1964 6/8/1990 NO 5 Gasoline 2,000 1/1/1964 1/1/1990 NO Notes: 1. Information obtained from NC UST Database. 2. Refer to Figure 3 for the locations of the former USTs. Incident Name: Barkers Grocery Incident No. 47627 (8489 closed via NFA) SITE HISTORY (UST SYSTEM INFORMATION) Facility ID No. 0-027378 Property Owner Property Owner Address Property Address William Nicholson, et al 449 Bell Farm Rd Strawberry Lane Statesville, NC 28677 Statesville, NC 28625Priscilla Nicholson 869 Blackwelder Rd 698 Turnersburg HwyStatesville, NC 28625 Statesville, NC 28625-9457Judy S Hooks 125 Mann Rd 120 Houpe RdHarmony, NC 28634 Statesville, NC 28625 Pamela Cloar 126 Houpe Rd 126 Houpe Rd Statesville, NC 28625 Statesville, NC 28625Shannon O'Neill 134 Houpe Rd 134 Houpe RdStatesville, NC 28625 Statesville, NC 28625Lowell E Harmon 747 Turnersburg Hwy 747 Turnersburg HwyStatesville, NC 28625 Statesville, NC 28625 Iredell County Farm Bureau Inc 727 Turnersburg Hwy 719 Turnersburg Hwy Statesville, NC 28625 Statesville, NC 28625 Robert Taylor and Michael Barker 115 Mattie Ln 104 Houpe RoadStatesville, NC 28625 Statesville, NC 28625Notes: 1. Information gathered from Iredell County GIS online system. 2. BOLD portion of tax PIN numbers correspond with those displayed on Figure 2. Table 2Date: 12/13/22 Tax Account Number SURROUNDING PROPERTY OWNERSIncident Name: Barkers Grocery Incident No. 8489 4746665231 4746663063 4746661717 4746660580 4746660676 4746676347 4746564290 SITE 4746665635 Table 3Date: 12/13/22 Facility ID No. 0-027378 Well Depth Casing Depth Screen Interval Distance from SourceWell ID No. Well Owner/Address Well Address Phone No.Well Use (feet BGS)Type of Well (feet BGS)(feet BGS) Area of Release (feet)Tommy Dennison 690 Turnersburg Highway Primary Potable Source1Statesville, NC NA "not interested" in NA NA NA NA 465connecting to city waterGeorge Chambers, et. al.115 Sharon Crest Dr2Statesville, NC NA Primary Potable Source NA NA NA NA 1,125 Russell and Sue Flewelling 105 Strawberry Lane 3 Statesville, NC NA Inactive NA NA NA NA 450 Martha Harmon 119 Strawberry Lane4Statesville, NC NA Inactive 39 NA NA NA 655 Tiffany Fox 694 Turnersburg Highway4Statesville, NC NA Inactive NA NA NA NA 370 Iredell Water Corp.482 Nixon Road drilled5Statesville, NC (704) 878-3562 Public Water Supply 245 installed 1977 8" to 31'NA 1,570(450 gallon/minute)Notes:1. "BGS" = below ground surface, "NA" = not available.2. Information obtained from returned survey form. 3. Well ID number is displayed on Figure 2. . WATER SUPPLY WELL INFORMATIONIncident Name: Barkers Grocery Incident No. 47627 (8489 closed via NFA) Table 4 Date: 12/13/22 Facility ID No. 0-027378 Ph o t o i o n i z a t i o n D e t e c t o r ( P I D ) TP H 5 0 3 0 TP H 3 5 5 0 Sample ID 6.24 1.04 10.64 8.18 4.56 3.72 1.8 3.92 2.88 0.28 1.92 0.28 2.78 0.34 2.68 0.54 1.32 2.1 15.68 2.4 1 0.72 Bold denotes a compound detection. Analytical Method Contaminant of Concern Facility ID No. 0-027378 82 6 0 82 6 0 82 6 0 82 6 0 82 6 0 82 6 0 82 6 0 82 6 0 82 6 0 82 6 0 82 6 0 MA D E P V P H MA D E P V P H MA D E P V P H 0.00197 < 0.00110 < 0.000671 < 0.00209 < 0.00110 < 0.000605 0.152 0.027 0.0143 0.167 < 0.0814 <3.98 < 2.06 < 1.11 0.00269 0.00182 < 0.000671 < 0.00209 < 0.00110 0.000868 0.277 0.0263 0.0207 0.34 < 0.0815 < 3.57 < 1.85 < 0.992 0.0123*0.00773 < 0.000635 0.00237 < 0.00104 0.002 0.195 0.0273 0.0193 0.275 < 0.0771 < 4.13 < 2.14 < 1.15 Bold denotes a compound detection. Sample ID Table 6 Date: 12/13/22 Facility ID No. 0-021926 Well ID Date Installed Date Water Level Well Casing Depth (ft. Interval (x to y ft. Bottom of Well (ft. Casing Elevation Top of Product Thickness Table 7 Date: 12/13/22 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B Sample ID 1,610 363 19 928 17.3 233 60.8 32.2 111 < 14.0 266 < 5.30 < 30.0 < 7.60 < 6.90 < 7.10 < 7.00 < 6.302,600 3,010 385 3,260 14.5 169 579 172 < 52.0 < 28.0 < 200 19.9 174 22.6 49.6 < 14.2 < 14.0 < 12.6 2.92 3.32 8.15 60.8 < 0.220 0.22 25.8 56.8 < 2.60 1.77 < 10.0 3.13 49.9 < 0.760 2.65 2.91 1.5 2.81 Bold denotes a detection Analytical Method FIGURES EN V I R O N M E N T A L C O N S U L T A N T S , P . C . EN V I R O N M E N T A L C O N S U L T A N T S , P . C . EN V I R O N M E N T A L C O N S U L T A N T S , P . C . EN V I R O N M E N T A L C O N S U L T A N T S , P . C . 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 10/28/21 6/9/22 12/1/22 Well ID Top of Casing Free Product Groundwater Free Product Groundwater Free Product Groundwater Facility ID. No. 0-027378 62 1 0 D / 6 2 0 0 B 62 1 0 D / 6 2 0 0 B 62 1 0 D / 6 2 0 0 B 62 1 0 D / 6 2 0 0 B 62 1 0 D / 6 2 0 0 B 62 1 0 D / 6 2 0 0 B 62 1 0 D / 6 2 0 0 B 62 1 0 D / 6 2 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 1 0 D / 6 2 0 0 B - 6 2 5 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 62 0 0 B 60 1 0 B MA D E P V P H MA D E P V P H / E P H MA D E P E P H MA D E P V P H / E P H Sample ID Date Collected 18.0 <100 <200 <100 <200 715 1,260 116 588 < 1.98 18.7 37.5 18 99 44.1 37 <<5.5 3.4-<0.542 -11.6 <<<-4,970 919.2 < 80.0 300 1,380 2,480 191 995 < 14.8 70.5 66.1 30 133 92.6 66.7 213 << 10.6 < 20.0 -16.1 <<<----- 1,130 949 39.9 761 4.27 53.3 45.1 21.1 11.3 60.8 47.9 < 10.0 0.97 4.78 < 1.00 0.839 9.32 <<<----- 1,420 507 9.35 1,050 2.86 89.2 69.6 28 <<<< 100 < 10.0 << 30.0 << 6.90 < 7.10 << 6.30 ----- 1,610 363 19 928 17.3 233 60.8 32.2 111 < 14.0 <266 << 5.30 < 30.0 < 7.60 < 6.90 < 7.10 < 7.00 < 6.30 ----- 5,440 17,500 1,650 8,470 < 22.0 232 1,270 340 < 260 249 < 180 < 1000 < 60.0 55.9 254 < 76.0 182 <<<----- 2,990 7,130 693 4,000 20.9 202 782 170 <<<< 500 < 50.0 <309 74 < 35.5 << 31.5 ----- 2,600 3,010 385 3,260 14.5 169 579 172 < 52.0 < 28.0 << 200 <19.9 174 22.6 49.6 < 14.2 < 14.0 < 12.6 ----- 129 251 20 70.7 < 0.220 0.649 4.3 7.78 14.1 11 4.74 45.5 < 0.600 0.828 5.26 < 0.760 1.51 <<<----- 6.31 11 1.93 6.16 < 0.220 0.376 2.25 5.43 <<<79.3 1.06 <4.25 << 0.690 0.726 <0.633 ----- 2.92 3.32 8.15 60.8 < 0.220 0.22 25.8 56.8 < 2.60 1.77 << 10.0 <3.13 49.9 < 0.760 2.65 2.91 1.5 2.81 ----- 0.279 0.627 < 0.500 1.61 < 0.220 < 0.200 0.96 1.17 4.77 4.58 < 1.80 16.9 < 0.600 < 0.530 1.99 < 0.760 < 0.690 <<<----- ----- Bold denotes a detection APPENDIX C ANALYTICAL REPORT PREPARED FOR Attn: Ryan Kerins Terraquest Environmental Consultants, PC 100 E. Ruffin Street Mebane, North Carolina 27302 Generated 12/9/2022 6:18:47 PM JOB DESCRIPTION Barkers JOB NUMBER 400-229832-1 See page two for job notes and contact information. Pensacola FL 32514 3355 McLemore Drive Eurofins Pensacola Page 1 of 33 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 12/9/2022 6:18:47 PM Authorized for release by Chad Bechtold, Project Manager Chad.Bechtold@et.eurofinsus.com (813)690-3563 Page 2 of 33 12/9/2022 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: Barkers Laboratory Job ID: 400-229832-1 Page 3 of 33 Eurofins Pensacola12/9/2022 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: Terraquest Environmental Consultants, PC Job ID: 400-229832-1 Project/Site: Barkers Job ID: 400-229832-1 Laboratory: Eurofins Pensacola Narrative Job Narrative 400-229832-1 Receipt The samples were received on 12/2/2022 9:02 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 9.6°C Receipt Exceptions The following samples were received at the laboratory outside the required temperature criteria: TQMW1 (400-229832-1), TQMW2 (400-229832-2), TQMW3 (400-229832-3), TQMW4 (400-229832-4) and TQMW5 (400-229832-5). The client was contacted regarding this issue, and the laboratory was instructed to proceed with the analysis. GC/MS VOA Method SM6200_B: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 400-603986 were outside control limits for one or more analytes. Sample matrix interference is suspected because the associated laboratory control sample (LCS) recovery is within acceptance limits. Method SM6200_B: The following samples were diluted to bring the concentration of target analytes within the calibration range: TQMW1 (400-229832-1) and TQMW2 (400-229832-2). Elevated reporting limits (RLs) are provided. No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page. Eurofins PensacolaPage 4 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Client Sample ID: TQMW1 Lab Sample ID: 400-229832-1 1,2,4-Trimethylbenzene RL 10.0 ug/L MDL 8.20 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1060.8 SM6200-B 1,3,5-Trimethylbenzene 10.0 ug/L5.60 Total/NA1032.2 SM6200-B 2-Butanone (MEK)250 ug/L26.0 Total/NA10111JSM6200-B Acetone 250 ug/L100 Total/NA10266SM6200-B Benzene 10.0 ug/L1.30 Total/NA101610SM6200-B Diisopropyl ether 10.0 ug/L2.00 Total/NA10233SM6200-B Ethylbenzene 10.0 ug/L5.00 Total/NA1019.0 SM6200-B Methyl tert-butyl ether 10.0 ug/L2.20 Total/NA1017.3 SM6200-B m-Xylene & p-Xylene 50.0 ug/L6.30 Total/NA10659SM6200-B o-Xylene 50.0 ug/L6.00 Total/NA10269SM6200-B Toluene 10.0 ug/L4.10 Total/NA10363SM6200-B Xylenes, Total 100 ug/L16.0 Total/NA10928SM6200-B Client Sample ID: TQMW2 Lab Sample ID: 400-229832-2 1,2,4-Trimethylbenzene RL 20.0 ug/L MDL 16.4 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA20579SM6200-B 1,3,5-Trimethylbenzene 20.0 ug/L11.2 Total/NA20172SM6200-B Benzene 20.0 ug/L2.60 Total/NA202600SM6200-B Diisopropyl ether 20.0 ug/L4.00 Total/NA20169SM6200-B Ethylbenzene 20.0 ug/L10.0 Total/NA20385SM6200-B Isopropylbenzene 20.0 ug/L10.6 Total/NA2019.9 J SM6200-B Methyl tert-butyl ether 20.0 ug/L4.40 Total/NA2014.5 J SM6200-B m-Xylene & p-Xylene 100 ug/L12.6 Total/NA202340SM6200-B Naphthalene 100 ug/L60.0 Total/NA20174SM6200-B n-Butylbenzene 20.0 ug/L15.2 Total/NA2022.6 SM6200-B N-Propylbenzene 20.0 ug/L13.8 Total/NA2049.6 SM6200-B o-Xylene 100 ug/L12.0 Total/NA20923SM6200-B Toluene 20.0 ug/L8.20 Total/NA203010SM6200-B Xylenes, Total 200 ug/L32.0 Total/NA203260SM6200-B Client Sample ID: TQMW3 Lab Sample ID: 400-229832-3 1,2,4-Trimethylbenzene RL 1.00 ug/L MDL 0.820 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA125.8 SM6200-B 1,3,5-Trimethylbenzene 1.00 ug/L0.560 Total/NA156.8 SM6200-B 2-Hexanone 25.0 ug/L1.40 Total/NA11.77 J SM6200-B Benzene 1.00 ug/L0.130 Total/NA12.92 SM6200-B Diisopropyl ether 1.00 ug/L0.200 Total/NA10.220 J SM6200-B Ethylbenzene 1.00 ug/L0.500 Total/NA18.15 SM6200-B Isopropylbenzene 1.00 ug/L0.530 Total/NA13.13 SM6200-B m-Xylene & p-Xylene 5.00 ug/L0.630 Total/NA129.1 SM6200-B Naphthalene 5.00 ug/L3.00 Total/NA149.9 SM6200-B N-Propylbenzene 1.00 ug/L0.690 Total/NA12.65 SM6200-B o-Xylene 5.00 ug/L0.600 Total/NA131.8 SM6200-B p-Cymene (p-Isopropyltoluene)1.00 ug/L0.710 Total/NA12.91 SM6200-B sec-Butylbenzene 1.00 ug/L0.700 Total/NA11.50 SM6200-B tert-Butylbenzene 1.00 ug/L0.630 Total/NA12.81 SM6200-B Toluene 1.00 ug/L0.410 Total/NA13.32 SM6200-B Xylenes, Total 10.0 ug/L1.60 Total/NA160.8 SM6200-B Eurofins Pensacola This Detection Summary does not include radiochemical test results. Page 5 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Client Sample ID: TQMW4 Lab Sample ID: 400-229832-4 No Detections. Client Sample ID: TQMW5 Lab Sample ID: 400-229832-5 No Detections. Eurofins Pensacola This Detection Summary does not include radiochemical test results. Page 6 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sample Summary Client: Terraquest Environmental Consultants, PC Job ID: 400-229832-1 Project/Site: Barkers Lab Sample ID Client Sample ID Matrix Collected Received 400-229832-1 TQMW1 Water 12/01/22 13:05 12/02/22 09:02 400-229832-2 TQMW2 Water 12/01/22 13:12 12/02/22 09:02 400-229832-3 TQMW3 Water 12/01/22 13:21 12/02/22 09:02 400-229832-4 TQMW4 Water 12/01/22 13:30 12/02/22 09:02 400-229832-5 TQMW5 Water 12/01/22 13:38 12/02/22 09:02 Eurofins PensacolaPage 7 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Lab Sample ID: 400-229832-1Client Sample ID: TQMW1 Matrix: WaterDate Collected: 12/01/22 13:05 Date Received: 12/02/22 09:02 Method: SM6200-B - Volatile Organic Compounds RL MDL 1.60 U 10.0 1.60 ug/L 12/08/22 12:24 10 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 10.0 1.80 ug/L 12/08/22 12:24 101.80 U1,1,1-Trichloroethane 10.0 5.00 ug/L 12/08/22 12:24 105.00 U1,1,2,2-Tetrachloroethane 50.0 2.10 ug/L 12/08/22 12:24 102.10 U1,1,2-Trichloroethane 10.0 5.00 ug/L 12/08/22 12:24 105.00 U1,1-Dichloroethane 10.0 5.00 ug/L 12/08/22 12:24 105.00 U1,1-Dichloroethene 10.0 5.00 ug/L 12/08/22 12:24 105.00 U1,1-Dichloropropene 10.0 9.00 ug/L 12/08/22 12:24 109.00 U1,2,3-Trichlorobenzene 50.0 8.40 ug/L 12/08/22 12:24 108.40 U1,2,3-Trichloropropane 10.0 8.20 ug/L 12/08/22 12:24 108.20 U1,2,4-Trichlorobenzene 10.0 8.20 ug/L 12/08/22 12:24 1060.81,2,4-Trimethylbenzene 10.0 2.30 ug/L 12/08/22 12:24 102.30 U1,2-Dibromoethane (EDB) 10.0 5.00 ug/L 12/08/22 12:24 105.00 U1,2-Dichlorobenzene 10.0 1.90 ug/L 12/08/22 12:24 101.90 U1,2-Dichloroethane 10.0 5.00 ug/L 12/08/22 12:24 105.00 U1,2-Dichloropropane 10.0 5.60 ug/L 12/08/22 12:24 1032.21,3,5-Trimethylbenzene 10.0 5.40 ug/L 12/08/22 12:24 105.40 U1,3-Dichlorobenzene 10.0 5.00 ug/L 12/08/22 12:24 105.00 U1,3-Dichloropropane 10.0 6.40 ug/L 12/08/22 12:24 106.40 U1,4-Dichlorobenzene 10.0 5.00 ug/L 12/08/22 12:24 105.00 U2,2-Dichloropropane 250 26.0 ug/L 12/08/22 12:24 10111J2-Butanone (MEK) 10.0 5.70 ug/L 12/08/22 12:24 105.70 U2-Chlorotoluene 250 14.0 ug/L 12/08/22 12:24 1014.0 U2-Hexanone 10.0 5.60 ug/L 12/08/22 12:24 105.60 U4-Chlorotoluene 250 18.0 ug/L 12/08/22 12:24 1018.0 U4-Methyl-2-pentanone (MIBK) 250 100 ug/L 12/08/22 12:24 10266Acetone 10.0 1.30 ug/L 12/08/22 12:24 101610Benzene 10.0 5.40 ug/L 12/08/22 12:24 105.40 UBromobenzene 10.0 2.10 ug/L 12/08/22 12:24 102.10 UBromochloromethane 10.0 5.00 ug/L 12/08/22 12:24 105.00 UBromodichloromethane 50.0 2.50 ug/L 12/08/22 12:24 102.50 UBromoform 10.0 9.80 ug/L 12/08/22 12:24 109.80 UBromomethane 10.0 1.90 ug/L 12/08/22 12:24 101.90 UCarbon tetrachloride 10.0 1.50 ug/L 12/08/22 12:24 101.50 UChlorobenzene 10.0 7.60 ug/L 12/08/22 12:24 107.60 UChloroethane 10.0 10.0 ug/L 12/08/22 12:24 1010.0 UChloroform 10.0 3.20 ug/L 12/08/22 12:24 103.20 UChloromethane 10.0 2.00 ug/L 12/08/22 12:24 102.00 Ucis-1,2-Dichloroethene 50.0 5.00 ug/L 12/08/22 12:24 105.00 Ucis-1,3-Dichloropropene 10.0 2.40 ug/L 12/08/22 12:24 102.40 UDibromochloromethane 10.0 8.50 ug/L 12/08/22 12:24 108.50 UDichlorodifluoromethane 10.0 2.00 ug/L 12/08/22 12:24 10233Diisopropyl ether 1000 240 ug/L 12/08/22 12:24 10240UEthanol 10.0 5.00 ug/L 12/08/22 12:24 1019.0Ethylbenzene 10.0 5.30 ug/L 12/08/22 12:24 105.30 UIsopropylbenzene 10.0 2.20 ug/L 12/08/22 12:24 1017.3Methyl tert-butyl ether 50.0 30.0 ug/L 12/08/22 12:24 1030.0 UMethylene Chloride 50.0 6.30 ug/L 12/08/22 12:24 10659m-Xylene & p-Xylene 50.0 30.0 ug/L 12/08/22 12:24 1030.0 UNaphthalene Eurofins Pensacola Page 8 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Lab Sample ID: 400-229832-1Client Sample ID: TQMW1 Matrix: WaterDate Collected: 12/01/22 13:05 Date Received: 12/02/22 09:02 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 7.60 U 10.0 7.60 ug/L 12/08/22 12:24 10 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier n-Butylbenzene 10.0 6.90 ug/L 12/08/22 12:24 106.90 UN-Propylbenzene 50.0 6.00 ug/L 12/08/22 12:24 10269o-Xylene 10.0 7.10 ug/L 12/08/22 12:24 107.10 Up-Cymene (p-Isopropyltoluene) 10.0 7.00 ug/L 12/08/22 12:24 107.00 Usec-Butylbenzene 10.0 10.0 ug/L 12/08/22 12:24 1010.0 UStyrene 10.0 6.30 ug/L 12/08/22 12:24 106.30 Utert-Butylbenzene 10.0 9.00 ug/L 12/08/22 12:24 109.00 UTetrachloroethene 10.0 4.10 ug/L 12/08/22 12:24 10363Toluene 10.0 5.00 ug/L 12/08/22 12:24 105.00 Utrans-1,2-Dichloroethene 50.0 2.00 ug/L 12/08/22 12:24 102.00 Utrans-1,3-Dichloropropene 10.0 1.50 ug/L 12/08/22 12:24 101.50 UTrichloroethene 10.0 5.20 ug/L 12/08/22 12:24 105.20 UTrichlorofluoromethane 250 9.30 ug/L 12/08/22 12:24 109.30 UVinyl acetate 10.0 5.00 ug/L 12/08/22 12:24 105.00 UVinyl chloride 100 16.0 ug/L 12/08/22 12:24 10928Xylenes, Total 4-Bromofluorobenzene 98 72-119 12/08/22 12:24 10 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 98 12/08/22 12:24 1075-126 Toluene-d8 (Surr)89 12/08/22 12:24 1064-132 Eurofins Pensacola Page 9 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Lab Sample ID: 400-229832-2Client Sample ID: TQMW2 Matrix: WaterDate Collected: 12/01/22 13:12 Date Received: 12/02/22 09:02 Method: SM6200-B - Volatile Organic Compounds RL MDL 3.20 U 20.0 3.20 ug/L 12/08/22 13:12 20 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 20.0 3.60 ug/L 12/08/22 13:12 203.60 U1,1,1-Trichloroethane 20.0 10.0 ug/L 12/08/22 13:12 2010.0 U1,1,2,2-Tetrachloroethane 100 4.20 ug/L 12/08/22 13:12 204.20 U1,1,2-Trichloroethane 20.0 10.0 ug/L 12/08/22 13:12 2010.0 U1,1-Dichloroethane 20.0 10.0 ug/L 12/08/22 13:12 2010.0 U1,1-Dichloroethene 20.0 10.0 ug/L 12/08/22 13:12 2010.0 U1,1-Dichloropropene 20.0 18.0 ug/L 12/08/22 13:12 2018.0 U1,2,3-Trichlorobenzene 100 16.8 ug/L 12/08/22 13:12 2016.8 U1,2,3-Trichloropropane 20.0 16.4 ug/L 12/08/22 13:12 2016.4 U1,2,4-Trichlorobenzene 20.0 16.4 ug/L 12/08/22 13:12 205791,2,4-Trimethylbenzene 20.0 4.60 ug/L 12/08/22 13:12 204.60 U1,2-Dibromoethane (EDB) 20.0 10.0 ug/L 12/08/22 13:12 2010.0 U1,2-Dichlorobenzene 20.0 3.80 ug/L 12/08/22 13:12 203.80 U1,2-Dichloroethane 20.0 10.0 ug/L 12/08/22 13:12 2010.0 U1,2-Dichloropropane 20.0 11.2 ug/L 12/08/22 13:12 201721,3,5-Trimethylbenzene 20.0 10.8 ug/L 12/08/22 13:12 2010.8 U1,3-Dichlorobenzene 20.0 10.0 ug/L 12/08/22 13:12 2010.0 U1,3-Dichloropropane 20.0 12.8 ug/L 12/08/22 13:12 2012.8 U1,4-Dichlorobenzene 20.0 10.0 ug/L 12/08/22 13:12 2010.0 U2,2-Dichloropropane 500 52.0 ug/L 12/08/22 13:12 2052.0 U2-Butanone (MEK) 20.0 11.4 ug/L 12/08/22 13:12 2011.4 U2-Chlorotoluene 500 28.0 ug/L 12/08/22 13:12 2028.0 U2-Hexanone 20.0 11.2 ug/L 12/08/22 13:12 2011.2 U4-Chlorotoluene 500 36.0 ug/L 12/08/22 13:12 2036.0 U4-Methyl-2-pentanone (MIBK) 500 200 ug/L 12/08/22 13:12 20200UAcetone 20.0 2.60 ug/L 12/08/22 13:12 202600Benzene 20.0 10.8 ug/L 12/08/22 13:12 2010.8 UBromobenzene 20.0 4.20 ug/L 12/08/22 13:12 204.20 UBromochloromethane 20.0 10.0 ug/L 12/08/22 13:12 2010.0 UBromodichloromethane 100 5.00 ug/L 12/08/22 13:12 205.00 UBromoform 20.0 19.6 ug/L 12/08/22 13:12 2019.6 UBromomethane 20.0 3.80 ug/L 12/08/22 13:12 203.80 UCarbon tetrachloride 20.0 3.00 ug/L 12/08/22 13:12 203.00 UChlorobenzene 20.0 15.2 ug/L 12/08/22 13:12 2015.2 UChloroethane 20.0 20.0 ug/L 12/08/22 13:12 2020.0 UChloroform 20.0 6.40 ug/L 12/08/22 13:12 206.40 UChloromethane 20.0 4.00 ug/L 12/08/22 13:12 204.00 Ucis-1,2-Dichloroethene 100 10.0 ug/L 12/08/22 13:12 2010.0 Ucis-1,3-Dichloropropene 20.0 4.80 ug/L 12/08/22 13:12 204.80 UDibromochloromethane 20.0 17.0 ug/L 12/08/22 13:12 2017.0 UDichlorodifluoromethane 20.0 4.00 ug/L 12/08/22 13:12 20169Diisopropyl ether 2000 480 ug/L 12/08/22 13:12 20480UEthanol 20.0 10.0 ug/L 12/08/22 13:12 20385Ethylbenzene 20.0 10.6 ug/L 12/08/22 13:12 2019.9 JIsopropylbenzene 20.0 4.40 ug/L 12/08/22 13:12 2014.5 JMethyl tert-butyl ether 100 60.0 ug/L 12/08/22 13:12 2060.0 UMethylene Chloride 100 12.6 ug/L 12/08/22 13:12 202340m-Xylene & p-Xylene 100 60.0 ug/L 12/08/22 13:12 20174Naphthalene Eurofins Pensacola Page 10 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Lab Sample ID: 400-229832-2Client Sample ID: TQMW2 Matrix: WaterDate Collected: 12/01/22 13:12 Date Received: 12/02/22 09:02 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 22.6 20.0 15.2 ug/L 12/08/22 13:12 20 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier n-Butylbenzene 20.0 13.8 ug/L 12/08/22 13:12 2049.6N-Propylbenzene 100 12.0 ug/L 12/08/22 13:12 20923o-Xylene 20.0 14.2 ug/L 12/08/22 13:12 2014.2 Up-Cymene (p-Isopropyltoluene) 20.0 14.0 ug/L 12/08/22 13:12 2014.0 Usec-Butylbenzene 20.0 20.0 ug/L 12/08/22 13:12 2020.0 UStyrene 20.0 12.6 ug/L 12/08/22 13:12 2012.6 Utert-Butylbenzene 20.0 18.0 ug/L 12/08/22 13:12 2018.0 UTetrachloroethene 20.0 8.20 ug/L 12/08/22 13:12 203010Toluene 20.0 10.0 ug/L 12/08/22 13:12 2010.0 Utrans-1,2-Dichloroethene 100 4.00 ug/L 12/08/22 13:12 204.00 Utrans-1,3-Dichloropropene 20.0 3.00 ug/L 12/08/22 13:12 203.00 UTrichloroethene 20.0 10.4 ug/L 12/08/22 13:12 2010.4 UTrichlorofluoromethane 500 18.6 ug/L 12/08/22 13:12 2018.6 UVinyl acetate 20.0 10.0 ug/L 12/08/22 13:12 2010.0 UVinyl chloride 200 32.0 ug/L 12/08/22 13:12 203260Xylenes, Total 4-Bromofluorobenzene 95 72-119 12/08/22 13:12 20 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 96 12/08/22 13:12 2075-126 Toluene-d8 (Surr)91 12/08/22 13:12 2064-132 Eurofins Pensacola Page 11 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Lab Sample ID: 400-229832-3Client Sample ID: TQMW3 Matrix: WaterDate Collected: 12/01/22 13:21 Date Received: 12/02/22 09:02 Method: SM6200-B - Volatile Organic Compounds RL MDL 0.160 U 1.00 0.160 ug/L 12/08/22 10:57 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.180 ug/L 12/08/22 10:57 10.180 U1,1,1-Trichloroethane 1.00 0.500 ug/L 12/08/22 10:57 10.500 U1,1,2,2-Tetrachloroethane 5.00 0.210 ug/L 12/08/22 10:57 10.210 U1,1,2-Trichloroethane 1.00 0.500 ug/L 12/08/22 10:57 10.500 U1,1-Dichloroethane 1.00 0.500 ug/L 12/08/22 10:57 10.500 U1,1-Dichloroethene 1.00 0.500 ug/L 12/08/22 10:57 10.500 U1,1-Dichloropropene 1.00 0.900 ug/L 12/08/22 10:57 10.900 U1,2,3-Trichlorobenzene 5.00 0.840 ug/L 12/08/22 10:57 10.840 U1,2,3-Trichloropropane 1.00 0.820 ug/L 12/08/22 10:57 10.820 U1,2,4-Trichlorobenzene 1.00 0.820 ug/L 12/08/22 10:57 125.81,2,4-Trimethylbenzene 1.00 0.230 ug/L 12/08/22 10:57 10.230 U1,2-Dibromoethane (EDB) 1.00 0.500 ug/L 12/08/22 10:57 10.500 U1,2-Dichlorobenzene 1.00 0.190 ug/L 12/08/22 10:57 10.190 U1,2-Dichloroethane 1.00 0.500 ug/L 12/08/22 10:57 10.500 U1,2-Dichloropropane 1.00 0.560 ug/L 12/08/22 10:57 156.81,3,5-Trimethylbenzene 1.00 0.540 ug/L 12/08/22 10:57 10.540 U1,3-Dichlorobenzene 1.00 0.500 ug/L 12/08/22 10:57 10.500 U1,3-Dichloropropane 1.00 0.640 ug/L 12/08/22 10:57 10.640 U1,4-Dichlorobenzene 1.00 0.500 ug/L 12/08/22 10:57 10.500 U2,2-Dichloropropane 25.0 2.60 ug/L 12/08/22 10:57 12.60 U2-Butanone (MEK) 1.00 0.570 ug/L 12/08/22 10:57 10.570 U2-Chlorotoluene 25.0 1.40 ug/L 12/08/22 10:57 11.77 J2-Hexanone 1.00 0.560 ug/L 12/08/22 10:57 10.560 U4-Chlorotoluene 25.0 1.80 ug/L 12/08/22 10:57 11.80 U4-Methyl-2-pentanone (MIBK) 25.0 10.0 ug/L 12/08/22 10:57 110.0 UAcetone 1.00 0.130 ug/L 12/08/22 10:57 12.92Benzene 1.00 0.540 ug/L 12/08/22 10:57 10.540 UBromobenzene 1.00 0.210 ug/L 12/08/22 10:57 10.210 UBromochloromethane 1.00 0.500 ug/L 12/08/22 10:57 10.500 UBromodichloromethane 5.00 0.250 ug/L 12/08/22 10:57 10.250 UBromoform 1.00 0.980 ug/L 12/08/22 10:57 10.980 UBromomethane 1.00 0.190 ug/L 12/08/22 10:57 10.190 UCarbon tetrachloride 1.00 0.150 ug/L 12/08/22 10:57 10.150 UChlorobenzene 1.00 0.760 ug/L 12/08/22 10:57 10.760 UChloroethane 1.00 1.00 ug/L 12/08/22 10:57 11.00 UChloroform 1.00 0.320 ug/L 12/08/22 10:57 10.320 UChloromethane 1.00 0.200 ug/L 12/08/22 10:57 10.200 Ucis-1,2-Dichloroethene 5.00 0.500 ug/L 12/08/22 10:57 10.500 Ucis-1,3-Dichloropropene 1.00 0.240 ug/L 12/08/22 10:57 10.240 UDibromochloromethane 1.00 0.850 ug/L 12/08/22 10:57 10.850 UDichlorodifluoromethane 1.00 0.200 ug/L 12/08/22 10:57 10.220 JDiisopropyl ether 100 24.0 ug/L 12/08/22 10:57 124.0 UEthanol 1.00 0.500 ug/L 12/08/22 10:57 18.15Ethylbenzene 1.00 0.530 ug/L 12/08/22 10:57 13.13Isopropylbenzene 1.00 0.220 ug/L 12/08/22 10:57 10.220 UMethyl tert-butyl ether 5.00 3.00 ug/L 12/08/22 10:57 13.00 UMethylene Chloride 5.00 0.630 ug/L 12/08/22 10:57 129.1m-Xylene & p-Xylene 5.00 3.00 ug/L 12/08/22 10:57 149.9Naphthalene Eurofins Pensacola Page 12 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Lab Sample ID: 400-229832-3Client Sample ID: TQMW3 Matrix: WaterDate Collected: 12/01/22 13:21 Date Received: 12/02/22 09:02 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 0.760 U 1.00 0.760 ug/L 12/08/22 10:57 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier n-Butylbenzene 1.00 0.690 ug/L 12/08/22 10:57 12.65N-Propylbenzene 5.00 0.600 ug/L 12/08/22 10:57 131.8o-Xylene 1.00 0.710 ug/L 12/08/22 10:57 12.91p-Cymene (p-Isopropyltoluene) 1.00 0.700 ug/L 12/08/22 10:57 11.50sec-Butylbenzene 1.00 1.00 ug/L 12/08/22 10:57 11.00 UStyrene 1.00 0.630 ug/L 12/08/22 10:57 12.81tert-Butylbenzene 1.00 0.900 ug/L 12/08/22 10:57 10.900 UTetrachloroethene 1.00 0.410 ug/L 12/08/22 10:57 13.32Toluene 1.00 0.500 ug/L 12/08/22 10:57 10.500 Utrans-1,2-Dichloroethene 5.00 0.200 ug/L 12/08/22 10:57 10.200 Utrans-1,3-Dichloropropene 1.00 0.150 ug/L 12/08/22 10:57 10.150 UTrichloroethene 1.00 0.520 ug/L 12/08/22 10:57 10.520 UTrichlorofluoromethane 25.0 0.930 ug/L 12/08/22 10:57 10.930 UVinyl acetate 1.00 0.500 ug/L 12/08/22 10:57 10.500 UVinyl chloride 10.0 1.60 ug/L 12/08/22 10:57 160.8Xylenes, Total 4-Bromofluorobenzene 96 72-119 12/08/22 10:57 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 98 12/08/22 10:57 175-126 Toluene-d8 (Surr)91 12/08/22 10:57 164-132 Eurofins Pensacola Page 13 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Lab Sample ID: 400-229832-4Client Sample ID: TQMW4 Matrix: WaterDate Collected: 12/01/22 13:30 Date Received: 12/02/22 09:02 Method: SM6200-B - Volatile Organic Compounds RL MDL 0.160 U 1.00 0.160 ug/L 12/08/22 11:19 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.180 ug/L 12/08/22 11:19 10.180 U1,1,1-Trichloroethane 1.00 0.500 ug/L 12/08/22 11:19 10.500 U1,1,2,2-Tetrachloroethane 5.00 0.210 ug/L 12/08/22 11:19 10.210 U1,1,2-Trichloroethane 1.00 0.500 ug/L 12/08/22 11:19 10.500 U1,1-Dichloroethane 1.00 0.500 ug/L 12/08/22 11:19 10.500 U1,1-Dichloroethene 1.00 0.500 ug/L 12/08/22 11:19 10.500 U1,1-Dichloropropene 1.00 0.900 ug/L 12/08/22 11:19 10.900 U1,2,3-Trichlorobenzene 5.00 0.840 ug/L 12/08/22 11:19 10.840 U1,2,3-Trichloropropane 1.00 0.820 ug/L 12/08/22 11:19 10.820 U1,2,4-Trichlorobenzene 1.00 0.820 ug/L 12/08/22 11:19 10.820 U1,2,4-Trimethylbenzene 1.00 0.230 ug/L 12/08/22 11:19 10.230 U1,2-Dibromoethane (EDB) 1.00 0.500 ug/L 12/08/22 11:19 10.500 U1,2-Dichlorobenzene 1.00 0.190 ug/L 12/08/22 11:19 10.190 U1,2-Dichloroethane 1.00 0.500 ug/L 12/08/22 11:19 10.500 U1,2-Dichloropropane 1.00 0.560 ug/L 12/08/22 11:19 10.560 U1,3,5-Trimethylbenzene 1.00 0.540 ug/L 12/08/22 11:19 10.540 U1,3-Dichlorobenzene 1.00 0.500 ug/L 12/08/22 11:19 10.500 U1,3-Dichloropropane 1.00 0.640 ug/L 12/08/22 11:19 10.640 U1,4-Dichlorobenzene 1.00 0.500 ug/L 12/08/22 11:19 10.500 U2,2-Dichloropropane 25.0 2.60 ug/L 12/08/22 11:19 12.60 U2-Butanone (MEK) 1.00 0.570 ug/L 12/08/22 11:19 10.570 U2-Chlorotoluene 25.0 1.40 ug/L 12/08/22 11:19 11.40 U2-Hexanone 1.00 0.560 ug/L 12/08/22 11:19 10.560 U4-Chlorotoluene 25.0 1.80 ug/L 12/08/22 11:19 11.80 U4-Methyl-2-pentanone (MIBK) 25.0 10.0 ug/L 12/08/22 11:19 110.0 UAcetone 1.00 0.130 ug/L 12/08/22 11:19 10.130 UBenzene 1.00 0.540 ug/L 12/08/22 11:19 10.540 UBromobenzene 1.00 0.210 ug/L 12/08/22 11:19 10.210 UBromochloromethane 1.00 0.500 ug/L 12/08/22 11:19 10.500 UBromodichloromethane 5.00 0.250 ug/L 12/08/22 11:19 10.250 UBromoform 1.00 0.980 ug/L 12/08/22 11:19 10.980 UBromomethane 1.00 0.190 ug/L 12/08/22 11:19 10.190 UCarbon tetrachloride 1.00 0.150 ug/L 12/08/22 11:19 10.150 UChlorobenzene 1.00 0.760 ug/L 12/08/22 11:19 10.760 UChloroethane 1.00 1.00 ug/L 12/08/22 11:19 11.00 UChloroform 1.00 0.320 ug/L 12/08/22 11:19 10.320 U F1Chloromethane 1.00 0.200 ug/L 12/08/22 11:19 10.200 Ucis-1,2-Dichloroethene 5.00 0.500 ug/L 12/08/22 11:19 10.500 Ucis-1,3-Dichloropropene 1.00 0.240 ug/L 12/08/22 11:19 10.240 UDibromochloromethane 1.00 0.850 ug/L 12/08/22 11:19 10.850 UDichlorodifluoromethane 1.00 0.200 ug/L 12/08/22 11:19 10.200 UDiisopropyl ether 100 24.0 ug/L 12/08/22 11:19 124.0 U F1Ethanol 1.00 0.500 ug/L 12/08/22 11:19 10.500 UEthylbenzene 1.00 0.530 ug/L 12/08/22 11:19 10.530 UIsopropylbenzene 1.00 0.220 ug/L 12/08/22 11:19 10.220 UMethyl tert-butyl ether 5.00 3.00 ug/L 12/08/22 11:19 13.00 UMethylene Chloride 5.00 0.630 ug/L 12/08/22 11:19 10.630 Um-Xylene & p-Xylene 5.00 3.00 ug/L 12/09/22 10:36 13.00 UNaphthalene Eurofins Pensacola Page 14 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Lab Sample ID: 400-229832-4Client Sample ID: TQMW4 Matrix: WaterDate Collected: 12/01/22 13:30 Date Received: 12/02/22 09:02 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 0.760 U 1.00 0.760 ug/L 12/08/22 11:19 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier n-Butylbenzene 1.00 0.690 ug/L 12/08/22 11:19 10.690 UN-Propylbenzene 5.00 0.600 ug/L 12/08/22 11:19 10.600 Uo-Xylene 1.00 0.710 ug/L 12/08/22 11:19 10.710 Up-Cymene (p-Isopropyltoluene) 1.00 0.700 ug/L 12/08/22 11:19 10.700 Usec-Butylbenzene 1.00 1.00 ug/L 12/08/22 11:19 11.00 UStyrene 1.00 0.630 ug/L 12/08/22 11:19 10.630 Utert-Butylbenzene 1.00 0.900 ug/L 12/08/22 11:19 10.900 UTetrachloroethene 1.00 0.410 ug/L 12/08/22 11:19 10.410 UToluene 1.00 0.500 ug/L 12/08/22 11:19 10.500 Utrans-1,2-Dichloroethene 5.00 0.200 ug/L 12/08/22 11:19 10.200 Utrans-1,3-Dichloropropene 1.00 0.150 ug/L 12/08/22 11:19 10.150 UTrichloroethene 1.00 0.520 ug/L 12/08/22 11:19 10.520 UTrichlorofluoromethane 25.0 0.930 ug/L 12/08/22 11:19 10.930 UVinyl acetate 1.00 0.500 ug/L 12/08/22 11:19 10.500 UVinyl chloride 10.0 1.60 ug/L 12/08/22 11:19 11.60 UXylenes, Total 4-Bromofluorobenzene 96 72-119 12/08/22 11:19 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 4-Bromofluorobenzene 97 12/09/22 10:36 172-119 Dibromofluoromethane 98 12/08/22 11:19 175-126 Dibromofluoromethane 105 12/09/22 10:36 175-126 Toluene-d8 (Surr)91 12/08/22 11:19 164-132 Toluene-d8 (Surr)85 12/09/22 10:36 164-132 Eurofins Pensacola Page 15 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Lab Sample ID: 400-229832-5Client Sample ID: TQMW5 Matrix: WaterDate Collected: 12/01/22 13:38 Date Received: 12/02/22 09:02 Method: SM6200-B - Volatile Organic Compounds RL MDL 0.160 U 1.00 0.160 ug/L 12/08/22 11:40 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.180 ug/L 12/08/22 11:40 10.180 U1,1,1-Trichloroethane 1.00 0.500 ug/L 12/08/22 11:40 10.500 U1,1,2,2-Tetrachloroethane 5.00 0.210 ug/L 12/08/22 11:40 10.210 U1,1,2-Trichloroethane 1.00 0.500 ug/L 12/08/22 11:40 10.500 U1,1-Dichloroethane 1.00 0.500 ug/L 12/08/22 11:40 10.500 U1,1-Dichloroethene 1.00 0.500 ug/L 12/08/22 11:40 10.500 U1,1-Dichloropropene 1.00 0.900 ug/L 12/08/22 11:40 10.900 U1,2,3-Trichlorobenzene 5.00 0.840 ug/L 12/08/22 11:40 10.840 U1,2,3-Trichloropropane 1.00 0.820 ug/L 12/08/22 11:40 10.820 U1,2,4-Trichlorobenzene 1.00 0.820 ug/L 12/08/22 11:40 10.820 U1,2,4-Trimethylbenzene 1.00 0.230 ug/L 12/08/22 11:40 10.230 U1,2-Dibromoethane (EDB) 1.00 0.500 ug/L 12/08/22 11:40 10.500 U1,2-Dichlorobenzene 1.00 0.190 ug/L 12/08/22 11:40 10.190 U1,2-Dichloroethane 1.00 0.500 ug/L 12/08/22 11:40 10.500 U1,2-Dichloropropane 1.00 0.560 ug/L 12/08/22 11:40 10.560 U1,3,5-Trimethylbenzene 1.00 0.540 ug/L 12/08/22 11:40 10.540 U1,3-Dichlorobenzene 1.00 0.500 ug/L 12/08/22 11:40 10.500 U1,3-Dichloropropane 1.00 0.640 ug/L 12/08/22 11:40 10.640 U1,4-Dichlorobenzene 1.00 0.500 ug/L 12/08/22 11:40 10.500 U2,2-Dichloropropane 25.0 2.60 ug/L 12/08/22 11:40 12.60 U2-Butanone (MEK) 1.00 0.570 ug/L 12/08/22 11:40 10.570 U2-Chlorotoluene 25.0 1.40 ug/L 12/08/22 11:40 11.40 U2-Hexanone 1.00 0.560 ug/L 12/08/22 11:40 10.560 U4-Chlorotoluene 25.0 1.80 ug/L 12/08/22 11:40 11.80 U4-Methyl-2-pentanone (MIBK) 25.0 10.0 ug/L 12/08/22 11:40 110.0 UAcetone 1.00 0.130 ug/L 12/08/22 11:40 10.130 UBenzene 1.00 0.540 ug/L 12/08/22 11:40 10.540 UBromobenzene 1.00 0.210 ug/L 12/08/22 11:40 10.210 UBromochloromethane 1.00 0.500 ug/L 12/08/22 11:40 10.500 UBromodichloromethane 5.00 0.250 ug/L 12/08/22 11:40 10.250 UBromoform 1.00 0.980 ug/L 12/08/22 11:40 10.980 UBromomethane 1.00 0.190 ug/L 12/08/22 11:40 10.190 UCarbon tetrachloride 1.00 0.150 ug/L 12/08/22 11:40 10.150 UChlorobenzene 1.00 0.760 ug/L 12/08/22 11:40 10.760 UChloroethane 1.00 1.00 ug/L 12/08/22 11:40 11.00 UChloroform 1.00 0.320 ug/L 12/08/22 11:40 10.320 UChloromethane 1.00 0.200 ug/L 12/08/22 11:40 10.200 Ucis-1,2-Dichloroethene 5.00 0.500 ug/L 12/08/22 11:40 10.500 Ucis-1,3-Dichloropropene 1.00 0.240 ug/L 12/08/22 11:40 10.240 UDibromochloromethane 1.00 0.850 ug/L 12/08/22 11:40 10.850 UDichlorodifluoromethane 1.00 0.200 ug/L 12/08/22 11:40 10.200 UDiisopropyl ether 100 24.0 ug/L 12/08/22 11:40 124.0 UEthanol 1.00 0.500 ug/L 12/08/22 11:40 10.500 UEthylbenzene 1.00 0.530 ug/L 12/08/22 11:40 10.530 UIsopropylbenzene 1.00 0.220 ug/L 12/08/22 11:40 10.220 UMethyl tert-butyl ether 5.00 3.00 ug/L 12/08/22 11:40 13.00 UMethylene Chloride 5.00 0.630 ug/L 12/08/22 11:40 10.630 Um-Xylene & p-Xylene 5.00 3.00 ug/L 12/08/22 11:40 13.00 UNaphthalene Eurofins Pensacola Page 16 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Lab Sample ID: 400-229832-5Client Sample ID: TQMW5 Matrix: WaterDate Collected: 12/01/22 13:38 Date Received: 12/02/22 09:02 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 0.760 U 1.00 0.760 ug/L 12/08/22 11:40 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier n-Butylbenzene 1.00 0.690 ug/L 12/08/22 11:40 10.690 UN-Propylbenzene 5.00 0.600 ug/L 12/08/22 11:40 10.600 Uo-Xylene 1.00 0.710 ug/L 12/08/22 11:40 10.710 Up-Cymene (p-Isopropyltoluene) 1.00 0.700 ug/L 12/08/22 11:40 10.700 Usec-Butylbenzene 1.00 1.00 ug/L 12/08/22 11:40 11.00 UStyrene 1.00 0.630 ug/L 12/08/22 11:40 10.630 Utert-Butylbenzene 1.00 0.900 ug/L 12/08/22 11:40 10.900 UTetrachloroethene 1.00 0.410 ug/L 12/08/22 11:40 10.410 UToluene 1.00 0.500 ug/L 12/08/22 11:40 10.500 Utrans-1,2-Dichloroethene 5.00 0.200 ug/L 12/08/22 11:40 10.200 Utrans-1,3-Dichloropropene 1.00 0.150 ug/L 12/08/22 11:40 10.150 UTrichloroethene 1.00 0.520 ug/L 12/08/22 11:40 10.520 UTrichlorofluoromethane 25.0 0.930 ug/L 12/08/22 11:40 10.930 UVinyl acetate 1.00 0.500 ug/L 12/08/22 11:40 10.500 UVinyl chloride 10.0 1.60 ug/L 12/08/22 11:40 11.60 UXylenes, Total 4-Bromofluorobenzene 97 72-119 12/08/22 11:40 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 99 12/08/22 11:40 175-126 Toluene-d8 (Surr)91 12/08/22 11:40 164-132 Eurofins Pensacola Page 17 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Definitions/Glossary Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Qualifiers GC/MS VOA Qualifier Description E Result exceeded calibration range. Qualifier F1 MS and/or MSD recovery exceeds control limits. J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. 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 18 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers 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 98 98 89400-229832-1 Percent Surrogate Recovery (Acceptance Limits) TQMW1 95 96 91400-229832-2 TQMW2 96 98 91400-229832-3 TQMW3 96 98 91400-229832-4 TQMW4 97 105 85400-229832-4 TQMW4 93 99 91400-229832-4 MS TQMW4 94 98 91400-229832-4 MSD TQMW4 97 99 91400-229832-5 TQMW5 96 97 90LCS 400-603986/1002 Lab Control Sample 91 102 87LCS 400-604170/1002 Lab Control Sample 98 103 92MB 400-603986/4 Method Blank 97 104 87MB 400-604170/4 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene DBFM = Dibromofluoromethane TOL = Toluene-d8 (Surr) Eurofins Pensacola Page 19 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers GC/MS VOA Analysis Batch: 603986 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water SM6200-B400-229832-1 TQMW1 Total/NA Water SM6200-B400-229832-2 TQMW2 Total/NA Water SM6200-B400-229832-3 TQMW3 Total/NA Water SM6200-B400-229832-4 TQMW4 Total/NA Water SM6200-B400-229832-5 TQMW5 Total/NA Water SM6200-BMB 400-603986/4 Method Blank Total/NA Water SM6200-BLCS 400-603986/1002 Lab Control Sample Total/NA Water SM6200-B400-229832-4 MS TQMW4 Total/NA Water SM6200-B400-229832-4 MSD TQMW4 Total/NA Analysis Batch: 604170 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water SM6200-B400-229832-4 TQMW4 Total/NA Water SM6200-BMB 400-604170/4 Method Blank Total/NA Water SM6200-BLCS 400-604170/1002 Lab Control Sample Total/NA Eurofins Pensacola Page 20 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Method: SM6200-B - Volatile Organic Compounds Client Sample ID: Method BlankLab Sample ID: MB 400-603986/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 603986 RL MDL 1,1,1,2-Tetrachloroethane 0.160 U 1.00 0.160 ug/L 12/08/22 10:34 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier 0.180 U 0.1801.00 ug/L 12/08/22 10:34 11,1,1-Trichloroethane 0.500 U 0.5001.00 ug/L 12/08/22 10:34 11,1,2,2-Tetrachloroethane 0.210 U 0.2105.00 ug/L 12/08/22 10:34 11,1,2-Trichloroethane 0.500 U 0.5001.00 ug/L 12/08/22 10:34 11,1-Dichloroethane 0.500 U 0.5001.00 ug/L 12/08/22 10:34 11,1-Dichloroethene 0.500 U 0.5001.00 ug/L 12/08/22 10:34 11,1-Dichloropropene 0.900 U 0.9001.00 ug/L 12/08/22 10:34 11,2,3-Trichlorobenzene 0.840 U 0.8405.00 ug/L 12/08/22 10:34 11,2,3-Trichloropropane 0.820 U 0.8201.00 ug/L 12/08/22 10:34 11,2,4-Trichlorobenzene 0.820 U 0.8201.00 ug/L 12/08/22 10:34 11,2,4-Trimethylbenzene 0.230 U 0.2301.00 ug/L 12/08/22 10:34 11,2-Dibromoethane (EDB) 0.500 U 0.5001.00 ug/L 12/08/22 10:34 11,2-Dichlorobenzene 0.190 U 0.1901.00 ug/L 12/08/22 10:34 11,2-Dichloroethane 0.500 U 0.5001.00 ug/L 12/08/22 10:34 11,2-Dichloropropane 0.560 U 0.5601.00 ug/L 12/08/22 10:34 11,3,5-Trimethylbenzene 0.540 U 0.5401.00 ug/L 12/08/22 10:34 11,3-Dichlorobenzene 0.500 U 0.5001.00 ug/L 12/08/22 10:34 11,3-Dichloropropane 0.640 U 0.6401.00 ug/L 12/08/22 10:34 11,4-Dichlorobenzene 0.500 U 0.5001.00 ug/L 12/08/22 10:34 12,2-Dichloropropane 2.60 U 2.6025.0 ug/L 12/08/22 10:34 12-Butanone (MEK) 0.570 U 0.5701.00 ug/L 12/08/22 10:34 12-Chlorotoluene 1.40 U 1.4025.0 ug/L 12/08/22 10:34 12-Hexanone 0.560 U 0.5601.00 ug/L 12/08/22 10:34 14-Chlorotoluene 1.80 U 1.8025.0 ug/L 12/08/22 10:34 14-Methyl-2-pentanone (MIBK) 10.0 U 10.025.0 ug/L 12/08/22 10:34 1Acetone 0.130 U 0.1301.00 ug/L 12/08/22 10:34 1Benzene 0.540 U 0.5401.00 ug/L 12/08/22 10:34 1Bromobenzene 0.210 U 0.2101.00 ug/L 12/08/22 10:34 1Bromochloromethane 0.500 U 0.5001.00 ug/L 12/08/22 10:34 1Bromodichloromethane 0.250 U 0.2505.00 ug/L 12/08/22 10:34 1Bromoform 0.980 U 0.9801.00 ug/L 12/08/22 10:34 1Bromomethane 0.190 U 0.1901.00 ug/L 12/08/22 10:34 1Carbon tetrachloride 0.150 U 0.1501.00 ug/L 12/08/22 10:34 1Chlorobenzene 0.760 U 0.7601.00 ug/L 12/08/22 10:34 1Chloroethane 1.00 U 1.001.00 ug/L 12/08/22 10:34 1Chloroform 0.320 U 0.3201.00 ug/L 12/08/22 10:34 1Chloromethane 0.200 U 0.2001.00 ug/L 12/08/22 10:34 1cis-1,2-Dichloroethene 0.500 U 0.5005.00 ug/L 12/08/22 10:34 1cis-1,3-Dichloropropene 0.240 U 0.2401.00 ug/L 12/08/22 10:34 1Dibromochloromethane 0.850 U 0.8501.00 ug/L 12/08/22 10:34 1Dichlorodifluoromethane 0.200 U 0.2001.00 ug/L 12/08/22 10:34 1Diisopropyl ether 24.0 U 24.0100 ug/L 12/08/22 10:34 1Ethanol 0.500 U 0.5001.00 ug/L 12/08/22 10:34 1Ethylbenzene 0.530 U 0.5301.00 ug/L 12/08/22 10:34 1Isopropylbenzene 0.220 U 0.2201.00 ug/L 12/08/22 10:34 1Methyl tert-butyl ether 3.00 U 3.005.00 ug/L 12/08/22 10:34 1Methylene Chloride 0.630 U 0.6305.00 ug/L 12/08/22 10:34 1m-Xylene & p-Xylene Eurofins Pensacola Page 21 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-603986/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 603986 RL MDL Naphthalene 3.00 U 5.00 3.00 ug/L 12/08/22 10:34 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier 0.760 U 0.7601.00 ug/L 12/08/22 10:34 1n-Butylbenzene 0.690 U 0.6901.00 ug/L 12/08/22 10:34 1N-Propylbenzene 0.600 U 0.6005.00 ug/L 12/08/22 10:34 1o-Xylene 0.710 U 0.7101.00 ug/L 12/08/22 10:34 1p-Cymene (p-Isopropyltoluene) 0.700 U 0.7001.00 ug/L 12/08/22 10:34 1sec-Butylbenzene 1.00 U 1.001.00 ug/L 12/08/22 10:34 1Styrene 0.630 U 0.6301.00 ug/L 12/08/22 10:34 1tert-Butylbenzene 0.900 U 0.9001.00 ug/L 12/08/22 10:34 1Tetrachloroethene 0.410 U 0.4101.00 ug/L 12/08/22 10:34 1Toluene 0.500 U 0.5001.00 ug/L 12/08/22 10:34 1trans-1,2-Dichloroethene 0.200 U 0.2005.00 ug/L 12/08/22 10:34 1trans-1,3-Dichloropropene 0.150 U 0.1501.00 ug/L 12/08/22 10:34 1Trichloroethene 0.520 U 0.5201.00 ug/L 12/08/22 10:34 1Trichlorofluoromethane 0.930 U 0.93025.0 ug/L 12/08/22 10:34 1Vinyl acetate 0.500 U 0.5001.00 ug/L 12/08/22 10:34 1Vinyl chloride 1.60 U 1.6010.0 ug/L 12/08/22 10:34 1Xylenes, Total 4-Bromofluorobenzene 98 72-119 12/08/22 10:34 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 103 12/08/22 10:34 1Dibromofluoromethane75-126 92 12/08/22 10:34 1Toluene-d8 (Surr)64-132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-603986/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 603986 1,1,1,2-Tetrachloroethane 50.0 48.15 ug/L 96 67 -131 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 1,1,1-Trichloroethane 50.0 52.72 ug/L 105 68 -130 1,1,2,2-Tetrachloroethane 50.0 43.99 ug/L 88 70 -131 1,1,2-Trichloroethane 50.0 46.10 ug/L 92 70 -130 1,1-Dichloroethane 50.0 57.40 ug/L 115 70 -130 1,1-Dichloroethene 50.0 48.92 ug/L 98 63 -134 1,1-Dichloropropene 50.0 52.47 ug/L 105 70 -130 1,2,3-Trichlorobenzene 50.0 51.69 ug/L 103 60 -138 1,2,3-Trichloropropane 50.0 43.48 ug/L 87 70 -130 1,2,4-Trichlorobenzene 50.0 51.16 ug/L 102 60 -140 1,2,4-Trimethylbenzene 50.0 46.07 ug/L 92 70 -130 1,2-Dibromoethane (EDB)50.0 45.77 ug/L 92 70 -130 1,2-Dichlorobenzene 50.0 48.45 ug/L 97 67 -130 1,2-Dichloroethane 50.0 51.74 ug/L 103 69 -130 1,2-Dichloropropane 50.0 60.64 ug/L 121 70 -130 1,3,5-Trimethylbenzene 50.0 46.44 ug/L 93 69 -130 1,3-Dichlorobenzene 50.0 49.16 ug/L 98 70 -130 1,3-Dichloropropane 50.0 44.98 ug/L 90 70 -130 1,4-Dichlorobenzene 50.0 47.77 ug/L 96 70 -130 2,2-Dichloropropane 50.0 56.09 ug/L 112 52 -135 Eurofins Pensacola Page 22 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-603986/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 603986 2-Butanone (MEK)200 210.8 ug/L 105 61 -145 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 2-Chlorotoluene 50.0 45.39 ug/L 91 70 -130 2-Hexanone 200 200.4 ug/L 100 65 -137 4-Chlorotoluene 50.0 46.60 ug/L 93 70 -130 4-Methyl-2-pentanone (MIBK)200 232.1 ug/L 116 69 -138 Acetone 200 201.5 ug/L 101 43 -160 Benzene 50.0 51.62 ug/L 103 70 -130 Bromobenzene 50.0 46.23 ug/L 92 70 -132 Bromochloromethane 50.0 57.30 ug/L 115 70 -130 Bromodichloromethane 50.0 51.39 ug/L 103 67 -133 Bromoform 50.0 43.02 ug/L 86 57 -140 Bromomethane 50.0 44.93 ug/L 90 10 -160 Carbon tetrachloride 50.0 51.80 ug/L 104 61 -137 Chlorobenzene 50.0 50.40 ug/L 101 70 -130 Chloroethane 50.0 48.03 ug/L 96 55 -141 Chloroform 50.0 49.37 ug/L 99 69 -130 Chloromethane 50.0 67.50 ug/L 135 58 -137 cis-1,2-Dichloroethene 50.0 59.71 ug/L 119 68 -130 cis-1,3-Dichloropropene 50.0 54.05 ug/L 108 69 -132 Dibromochloromethane 50.0 46.72 ug/L 93 67 -135 Dichlorodifluoromethane 50.0 46.81 ug/L 94 41 -146 Diisopropyl ether 50.0 52.30 ug/L 105 64 -132 Ethanol 2000 2881 ug/L 144 20 -160 Ethylbenzene 50.0 47.77 ug/L 96 70 -130 Isopropylbenzene 50.0 48.57 ug/L 97 70 -130 Methyl tert-butyl ether 50.0 49.72 ug/L 99 66 -130 Methylene Chloride 50.0 49.23 ug/L 98 66 -135 m-Xylene & p-Xylene 50.0 48.63 ug/L 97 70 -130 Naphthalene 50.0 54.43 ug/L 109 47 -149 n-Butylbenzene 50.0 48.64 ug/L 97 67 -130 N-Propylbenzene 50.0 48.25 ug/L 97 70 -130 o-Xylene 50.0 48.61 ug/L 97 70 -130 p-Cymene (p-Isopropyltoluene)50.0 49.24 ug/L 98 65 -130 sec-Butylbenzene 50.0 46.97 ug/L 94 66 -130 Styrene 50.0 48.71 ug/L 97 70 -130 tert-Butylbenzene 50.0 52.59 ug/L 105 64 -139 Tetrachloroethene 50.0 50.22 ug/L 100 65 -130 Toluene 50.0 48.43 ug/L 97 70 -130 trans-1,2-Dichloroethene 50.0 52.58 ug/L 105 70 -130 trans-1,3-Dichloropropene 50.0 45.45 ug/L 91 63 -130 Trichloroethene 50.0 55.41 ug/L 111 70 -130 Trichlorofluoromethane 50.0 50.60 ug/L 101 65 -138 Vinyl acetate 100 99.72 ug/L 100 26 -160 Vinyl chloride 50.0 52.79 ug/L 106 59 -136 Xylenes, Total 100 97.24 ug/L 97 70 -130 4-Bromofluorobenzene 72 -119 Surrogate 96 LCS LCS Qualifier Limits%Recovery Eurofins Pensacola Page 23 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-603986/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 603986 Dibromofluoromethane 75 -126 Surrogate 97 LCS LCS Qualifier Limits%Recovery 90Toluene-d8 (Surr)64 -132 Client Sample ID: TQMW4Lab Sample ID: 400-229832-4 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 603986 1,1,1,2-Tetrachloroethane 0.160 U 50.0 43.28 ug/L 87 59 -137 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,1,1-Trichloroethane 0.180 U 50.0 50.19 ug/L 100 57 -142 1,1,2,2-Tetrachloroethane 0.500 U 50.0 40.03 ug/L 80 66 -135 1,1,2-Trichloroethane 0.210 U 50.0 44.02 ug/L 88 66 -131 1,1-Dichloroethane 0.500 U 50.0 56.76 ug/L 114 61 -144 1,1-Dichloroethene 0.500 U 50.0 43.17 ug/L 86 54 -147 1,1-Dichloropropene 0.500 U 50.0 48.41 ug/L 97 65 -136 1,2,3-Trichlorobenzene 0.900 U 50.0 39.98 ug/L 80 43 -145 1,2,3-Trichloropropane 0.840 U 50.0 39.08 ug/L 78 65 -133 1,2,4-Trichlorobenzene 0.820 U 50.0 38.43 ug/L 77 39 -148 1,2,4-Trimethylbenzene 0.820 U 50.0 34.98 ug/L 70 50 -139 1,2-Dibromoethane (EDB)0.230 U 50.0 42.15 ug/L 84 64 -132 1,2-Dichlorobenzene 0.500 U 50.0 37.58 ug/L 75 52 -137 1,2-Dichloroethane 0.190 U 50.0 52.49 ug/L 105 60 -141 1,2-Dichloropropane 0.500 U 50.0 58.28 ug/L 117 66 -137 1,3,5-Trimethylbenzene 0.560 U 50.0 34.58 ug/L 69 52 -135 1,3-Dichlorobenzene 0.540 U 50.0 36.84 ug/L 74 54 -135 1,3-Dichloropropane 0.500 U 50.0 42.10 ug/L 84 66 -133 1,4-Dichlorobenzene 0.640 U 50.0 35.87 ug/L 72 53 -135 2,2-Dichloropropane 0.500 U 50.0 54.95 ug/L 110 42 -144 2-Butanone (MEK)2.60 U 200 212.6 ug/L 106 55 -150 2-Chlorotoluene 0.570 U 50.0 32.99 ug/L 66 53 -134 2-Hexanone 1.40 U 200 194.5 ug/L 97 65 -140 4-Chlorotoluene 0.560 U 50.0 34.41 ug/L 69 54 -133 4-Methyl-2-pentanone (MIBK)1.80 U 200 236.1 ug/L 118 63 -146 Acetone 10.0 U 200 207.8 ug/L 104 43 -150 Benzene 0.130 U 50.0 49.80 ug/L 100 56 -142 Bromobenzene 0.540 U 50.0 37.76 ug/L 76 59 -136 Bromochloromethane 0.210 U 50.0 56.74 ug/L 113 64 -140 Bromodichloromethane 0.500 U 50.0 47.88 ug/L 96 59 -143 Bromoform 0.250 U 50.0 38.83 ug/L 78 50 -140 Bromomethane 0.980 U 50.0 51.17 ug/L 102 10 -150 Carbon tetrachloride 0.190 U 50.0 49.13 ug/L 98 55 -145 Chlorobenzene 0.150 U 50.0 43.48 ug/L 87 64 -130 Chloroethane 0.760 U 50.0 58.17 ug/L 116 50 -150 Chloroform 1.00 U 50.0 48.43 ug/L 97 60 -141 Chloromethane 0.320 U F1 50.0 78.83 F1 ug/L 158 49 -148 cis-1,2-Dichloroethene 0.200 U 50.0 57.67 ug/L 115 59 -143 cis-1,3-Dichloropropene 0.500 U 50.0 50.36 ug/L 101 57 -140 Dibromochloromethane 0.240 U 50.0 43.68 ug/L 87 56 -143 Eurofins Pensacola Page 24 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: TQMW4Lab Sample ID: 400-229832-4 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 603986 Dichlorodifluoromethane 0.850 U 50.0 56.11 ug/L 112 16 -150 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Diisopropyl ether 0.200 U 50.0 55.86 ug/L 112 60 -144 Ethanol 24.0 U F1 2000 4277 E F1 ug/L 214 10 -150 Ethylbenzene 0.500 U 50.0 40.48 ug/L 81 58 -131 Isopropylbenzene 0.530 U 50.0 39.34 ug/L 79 56 -133 Methyl tert-butyl ether 0.220 U 50.0 49.28 ug/L 99 59 -137 Methylene Chloride 3.00 U 50.0 48.42 ug/L 97 60 -146 m-Xylene & p-Xylene 0.630 U 50.0 40.34 ug/L 81 57 -130 Naphthalene 4.92 J 50.0 48.12 ug/L 86 25 -150 n-Butylbenzene 0.760 U 50.0 33.98 ug/L 68 41 -142 N-Propylbenzene 0.690 U 50.0 35.88 ug/L 72 51 -138 o-Xylene 0.600 U 50.0 40.87 ug/L 82 61 -130 p-Cymene (p-Isopropyltoluene)0.710 U 50.0 35.57 ug/L 71 48 -139 sec-Butylbenzene 0.700 U 50.0 34.80 ug/L 70 50 -138 Styrene 1.00 U 50.0 40.46 ug/L 81 58 -131 tert-Butylbenzene 0.630 U 50.0 39.34 ug/L 79 54 -146 Tetrachloroethene 0.900 U 50.0 41.84 ug/L 84 52 -133 Toluene 0.410 U 50.0 42.89 ug/L 86 65 -130 trans-1,2-Dichloroethene 0.500 U 50.0 49.80 ug/L 100 61 -143 trans-1,3-Dichloropropene 0.200 U 50.0 40.92 ug/L 82 53 -133 Trichloroethene 0.150 U 50.0 52.09 ug/L 104 64 -136 Trichlorofluoromethane 0.520 U 50.0 61.18 ug/L 122 54 -150 Vinyl acetate 0.930 U 100 118.7 ug/L 119 26 -150 Vinyl chloride 0.500 U 50.0 64.91 ug/L 130 46 -150 Xylenes, Total 1.60 U 100 81.21 ug/L 81 59 -130 4-Bromofluorobenzene 72 -119 Surrogate 93 MS MS Qualifier Limits%Recovery 99Dibromofluoromethane 75 -126 91Toluene-d8 (Surr)64 -132 Client Sample ID: TQMW4Lab Sample ID: 400-229832-4 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 603986 1,1,1,2-Tetrachloroethane 0.160 U 50.0 40.76 ug/L 82 59 -137 6 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 49.23 ug/L 98 57 -142 2 30 1,1,2,2-Tetrachloroethane 0.500 U 50.0 39.21 ug/L 78 66 -135 2 30 1,1,2-Trichloroethane 0.210 U 50.0 42.90 ug/L 86 66 -131 3 30 1,1-Dichloroethane 0.500 U 50.0 56.25 ug/L 113 61 -144 1 30 1,1-Dichloroethene 0.500 U 50.0 50.57 ug/L 101 54 -147 16 30 1,1-Dichloropropene 0.500 U 50.0 48.02 ug/L 96 65 -136 1 30 1,2,3-Trichlorobenzene 0.900 U 50.0 30.31 ug/L 61 43 -145 28 30 1,2,3-Trichloropropane 0.840 U 50.0 38.21 ug/L 76 65 -133 2 30 1,2,4-Trichlorobenzene 0.820 U 50.0 28.88 ug/L 58 39 -148 28 30 1,2,4-Trimethylbenzene 0.820 U 50.0 29.83 ug/L 60 50 -139 16 30 1,2-Dibromoethane (EDB)0.230 U 50.0 41.32 ug/L 83 64 -132 2 30 Eurofins Pensacola Page 25 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: TQMW4Lab Sample ID: 400-229832-4 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 603986 1,2-Dichlorobenzene 0.500 U 50.0 31.30 ug/L 63 52 -137 18 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 1,2-Dichloroethane 0.190 U 50.0 51.58 ug/L 103 60 -141 2 30 1,2-Dichloropropane 0.500 U 50.0 56.93 ug/L 114 66 -137 2 30 1,3,5-Trimethylbenzene 0.560 U 50.0 30.76 ug/L 62 52 -135 12 30 1,3-Dichlorobenzene 0.540 U 50.0 30.16 ug/L 60 54 -135 20 30 1,3-Dichloropropane 0.500 U 50.0 41.16 ug/L 82 66 -133 2 30 1,4-Dichlorobenzene 0.640 U 50.0 28.52 ug/L 57 53 -135 23 30 2,2-Dichloropropane 0.500 U 50.0 53.28 ug/L 107 42 -144 3 31 2-Butanone (MEK)2.60 U 200 216.7 ug/L 108 55 -150 2 30 2-Chlorotoluene 0.570 U 50.0 30.66 ug/L 61 53 -134 7 30 2-Hexanone 1.40 U 200 191.4 ug/L 96 65 -140 2 30 4-Chlorotoluene 0.560 U 50.0 29.24 ug/L 58 54 -133 16 30 4-Methyl-2-pentanone (MIBK)1.80 U 200 240.0 ug/L 120 63 -146 2 30 Acetone 10.0 U 200 205.0 ug/L 102 43 -150 1 30 Benzene 0.130 U 50.0 48.31 ug/L 97 56 -142 3 30 Bromobenzene 0.540 U 50.0 33.80 ug/L 68 59 -136 11 30 Bromochloromethane 0.210 U 50.0 56.01 ug/L 112 64 -140 1 30 Bromodichloromethane 0.500 U 50.0 48.19 ug/L 96 59 -143 1 30 Bromoform 0.250 U 50.0 36.44 ug/L 73 50 -140 6 30 Bromomethane 0.980 U 50.0 52.75 ug/L 105 10 -150 3 50 Carbon tetrachloride 0.190 U 50.0 48.53 ug/L 97 55 -145 1 30 Chlorobenzene 0.150 U 50.0 39.98 ug/L 80 64 -130 8 30 Chloroethane 0.760 U 50.0 50.08 ug/L 100 50 -150 15 30 Chloroform 1.00 U 50.0 47.94 ug/L 96 60 -141 1 30 Chloromethane 0.320 U F1 50.0 70.54 ug/L 141 49 -148 11 31 cis-1,2-Dichloroethene 0.200 U 50.0 57.92 ug/L 116 59 -143 0 30 cis-1,3-Dichloropropene 0.500 U 50.0 49.23 ug/L 98 57 -140 2 30 Dibromochloromethane 0.240 U 50.0 41.75 ug/L 83 56 -143 5 30 Dichlorodifluoromethane 0.850 U 50.0 51.62 ug/L 103 16 -150 8 31 Diisopropyl ether 0.200 U 50.0 59.17 ug/L 118 60 -144 6 30 Ethanol 24.0 U F1 2000 4091 E F1 ug/L 205 10 -150 4 40 Ethylbenzene 0.500 U 50.0 37.69 ug/L 75 58 -131 7 30 Isopropylbenzene 0.530 U 50.0 35.74 ug/L 71 56 -133 10 30 Methyl tert-butyl ether 0.220 U 50.0 50.65 ug/L 101 59 -137 3 30 Methylene Chloride 3.00 U 50.0 46.86 ug/L 94 60 -146 3 32 m-Xylene & p-Xylene 0.630 U 50.0 36.56 ug/L 73 57 -130 10 30 Naphthalene 4.92 J 50.0 40.14 ug/L 70 25 -150 18 30 n-Butylbenzene 0.760 U 50.0 28.00 ug/L 56 41 -142 19 31 N-Propylbenzene 0.690 U 50.0 32.24 ug/L 64 51 -138 11 30 o-Xylene 0.600 U 50.0 37.13 ug/L 74 61 -130 10 30 p-Cymene (p-Isopropyltoluene)0.710 U 50.0 29.54 ug/L 59 48 -139 19 30 sec-Butylbenzene 0.700 U 50.0 30.31 ug/L 61 50 -138 14 30 Styrene 1.00 U 50.0 36.62 ug/L 73 58 -131 10 30 tert-Butylbenzene 0.630 U 50.0 35.23 ug/L 70 54 -146 11 30 Tetrachloroethene 0.900 U 50.0 40.47 ug/L 81 52 -133 3 30 Toluene 0.410 U 50.0 40.23 ug/L 80 65 -130 6 30 trans-1,2-Dichloroethene 0.500 U 50.0 49.07 ug/L 98 61 -143 1 30 trans-1,3-Dichloropropene 0.200 U 50.0 39.44 ug/L 79 53 -133 4 30 Trichloroethene 0.150 U 50.0 51.65 ug/L 103 64 -136 1 30 Eurofins Pensacola Page 26 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: TQMW4Lab Sample ID: 400-229832-4 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 603986 Trichlorofluoromethane 0.520 U 50.0 57.38 ug/L 115 54 -150 6 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Vinyl acetate 0.930 U 100 105.5 ug/L 105 26 -150 12 33 Vinyl chloride 0.500 U 50.0 58.87 ug/L 118 46 -150 10 30 Xylenes, Total 1.60 U 100 73.70 ug/L 74 59 -130 10 30 4-Bromofluorobenzene 72 -119 Surrogate 94 MSD MSD Qualifier Limits%Recovery 98Dibromofluoromethane 75 -126 91Toluene-d8 (Surr)64 -132 Client Sample ID: Method BlankLab Sample ID: MB 400-604170/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 604170 RL MDL Naphthalene 3.00 U 5.00 3.00 ug/L 12/09/22 08:21 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier 4-Bromofluorobenzene 97 72-119 12/09/22 08:21 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 104 12/09/22 08:21 1Dibromofluoromethane75-126 87 12/09/22 08:21 1Toluene-d8 (Surr)64-132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-604170/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 604170 Naphthalene 50.0 51.80 ug/L 104 47 -149 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 4-Bromofluorobenzene 72 -119 Surrogate 91 LCS LCS Qualifier Limits%Recovery 102Dibromofluoromethane 75 -126 87Toluene-d8 (Surr)64 -132 Eurofins Pensacola Page 27 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: Terraquest Environmental Consultants, PC Job ID: 400-229832-1 Project/Site: Barkers Client Sample ID: TQMW1 Lab Sample ID: 400-229832-1 Matrix: WaterDate Collected: 12/01/22 13:05 Date Received: 12/02/22 09:02 Analysis SM6200-B WPD12/08/22 12:2410 EET PEN603986 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: TQMW2 Lab Sample ID: 400-229832-2 Matrix: WaterDate Collected: 12/01/22 13:12 Date Received: 12/02/22 09:02 Analysis SM6200-B WPD12/08/22 13:1220 EET PEN603986 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: TQMW3 Lab Sample ID: 400-229832-3 Matrix: WaterDate Collected: 12/01/22 13:21 Date Received: 12/02/22 09:02 Analysis SM6200-B WPD12/08/22 10:571 EET PEN603986 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: TQMW4 Lab Sample ID: 400-229832-4 Matrix: WaterDate Collected: 12/01/22 13:30 Date Received: 12/02/22 09:02 Analysis SM6200-B WPD12/08/22 11:191 EET PEN603986 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis SM6200-B 1 604170 12/09/22 10:36 WPD EET PENTotal/NA 5 mL 5 mL Client Sample ID: TQMW5 Lab Sample ID: 400-229832-5 Matrix: WaterDate Collected: 12/01/22 13:38 Date Received: 12/02/22 09:02 Analysis SM6200-B WPD12/08/22 11:401 EET PEN603986 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 400-603986/4 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis SM6200-B WPD12/08/22 10:341 EET PEN603986 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 400-604170/4 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis SM6200-B WPD12/09/22 08:211 EET PEN604170 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 28 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: Terraquest Environmental Consultants, PC Job ID: 400-229832-1 Project/Site: Barkers Client Sample ID: Lab Control Sample Lab Sample ID: LCS 400-603986/1002 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis SM6200-B WPD12/08/22 09:251 EET PEN603986 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: Lab Control Sample Lab Sample ID: LCS 400-604170/1002 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis SM6200-B WPD12/09/22 07:111 EET PEN604170 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: TQMW4 Lab Sample ID: 400-229832-4 MS Matrix: WaterDate Collected: 12/01/22 13:30 Date Received: 12/02/22 09:02 Analysis SM6200-B WPD12/08/22 14:171 EET PEN603986 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: TQMW4 Lab Sample ID: 400-229832-4 MSD Matrix: WaterDate Collected: 12/01/22 13:30 Date Received: 12/02/22 09:02 Analysis SM6200-B WPD12/08/22 14:421 EET PEN603986 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 29 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Method Summary Job ID: 400-229832-1Client: Terraquest Environmental Consultants, PC Project/Site: Barkers 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 30 of 33 12/9/2022 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: 400-229832-1 Project/Site: Barkers 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 12-31-22 Eurofins Pensacola Page 31 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Pa g e 3 2 o f 3 3 12 / 9 / 2 0 2 2 123456789101112131415 Login Sample Receipt Checklist Client: Terraquest Environmental Consultants, PC Job Number: 400-229832-1 Login Number: 229832 Question Answer Comment Creator: Whitley, Adrian List Source: Eurofins Pensacola List Number: 1 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. N/AThe 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. FalseCooler Temperature is acceptable.Cooler temperature outside required temperature criteria. TrueCooler Temperature is recorded.9.6°C IR8 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 33 of 33 12/9/2022 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15