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Home My WebLink AboutAS-3741_28870_CA_MRP_20220228_ALL REPORT OF WATER QUALITY MONITORING JANUARY 2022 PISGAH ELEMENTARY SCHOOL 1495 PISGAH HIGHWAY CANDLER, NORTH CAROLINA 28715 NCDEQ UST INCIDENT NO. 28870 FACILITY ID 0-004505 PREPARED FOR: BUNCOMBE COUNTY SCHOOLS 175 BINGHAM ROAD ASHEVILLE, NORTH CAROLINA 28806 PREPARED BY: WOOD ENVIRONMENT & INFRASTRUCTURE SOLUTIONS, INC. 1308 PATTON AVENUE ASHEVILLE, NORTH CAROLINA 28806 FEBRUARY 28, 2022 WOOD PROJECT 6252-16-0231.07 North Carolina Corporate Engineering License No. F-1253; Geology No. C-247 Wood Environment & Infrastructure Solutions, Inc. 1308-C Patton Avenue Asheville, NC 28806 USA T: 828-252-8130 www.woodplc.com February 28, 2022 Mr. Michael Kowaluk Buncombe County Schools 175 Bingham Road Asheville, North Carolina 28806 Subject: Report of Water Quality Monitoring – January 2022 Pisgah Elementary School 1495 Pisgah Highway, Candler, North Carolina NCDEQ UST Incident No. 28870 Wood Project 6252-16-0231.07 Dear Mr. Kowaluk: Wood Environment & Infrastructure Solutions, Inc. (Wood) is pleased to submit this Report of Water Quality Monitoring for the Pisgah Elementary School site located at 1495 Pisgah Highway in Candler, North Carolina. This report was prepared in general accordance with the requirements for a Monitoring Report, as outlined by the North Carolina Department of Environmental Quality (NCDEQ) Division of Waste Management, Underground Storage Tank (UST) Section. If you have any questions concerning this report, please do not hesitate to contact us at (828) 252- 8130. Sincerely, Wood Environment & Infrastructure Solutions, Inc. Gregory L. Hutchins Technical Professional III Matthew E. Wallace, P.E. Principal Engineer Report of Water Quality Monitoring (January 2022) February 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.07 i TABLE OF CONTENTS 1. INTRODUCTION ...................................................................................................................... 1 1.1. Site-Specific Information ............................................................................................................... 1 1.2. Background Information ................................................................................................................ 2 1.3. Site Geology and Hydrogeology ................................................................................................ 5 2. FIELD ACTIVITIES ...................................................................................................................................... 6 3. LABORATORY RESULTS AND DISCUSSION ................................................................................... 7 4. FREE PRODUCT RECOVERY .................................................................................................................. 8 5. CONCLUSIONS AND RECOMMENDATIONS ................................................................................. 8 6. STATEMENTS AND CERTIFICATION .................................................................................................. 9 TABLES 1 Water Supply Wells within 1,500-Foot Radius of Source 2 Monitoring Well Construction Details 3 Historical Groundwater Elevations 4 Summary of Laboratory Analytical Results 5 Historical Analytical Results FIGURES 1 Topographic Site Map 2 Monitoring Well Location Plan APPENDIX A Laboratory Reports and Chain-of-Custody Records B Field Data Records Report of Water Quality Monitoring (January 2022) February 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.07 1 1. INTRODUCTION This report documents field activities conducted on January 5, 2022. This incident is for a petroleum release from a regulated underground storage tank system consisting of one 10,000-gallon underground storage tank (UST) utilized to store heating fuel for on-site use at the Pisgah Elementary School, (Facility ID #0-004505) in Candler, North Carolina. The Pisgah Elementary School (site) is located at 1495 Pisgah Highway in Candler, North Carolina. The site is located on the southeast side of Pisgah Highway (NC Highway 151), adjacent to its intersection with State Road 1114 and Curtis Creek Road. The site location is depicted on Figure 1, which is comprised of the World Topographic Map which includes data from United States Geological Survey 7.5 minute topographic quadrangles, and depicts the site location and vicinity with relevant topographic features. A site plan, including monitoring well locations, is depicted on Figure 2, which is based on a 2019 aerial photograph obtained from North Carolina Orthoimagery Program. 1.1. Site-Specific Information The following information is specific to the environmental activities conducted at the site. Site Name: Pisgah Elementary School Facility ID: 0-004505 NCDEQ UST Incident Number: 28870 Geographical Data Point: UST #2 Latitude: N 35 30’ 12.47” Longitude: W -82 43’ 53.32” Site Location Map: Figure 1 Risk Classification: High Facility Address: 1495 Pisgah Highway Candler, North Carolina 28715 Buncombe County Responsible Party: Buncombe County Schools 175 Bingham Road Asheville, North Carolina 28806 (828) 255-5921 Report of Water Quality Monitoring (January 2022) February 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.07 2 Primary Consultant: Wood Environment & Infrastructure Solutions, Inc. 1308 Patton Avenue, Suite C Asheville, North Carolina 28806 (828) 252-8130 Release Source/Quantity: Heating oil was reportedly discharged from a vent line to ground surface due to mechanical malfunction of a day tank pumping system in August 2010. 1.2. Background Information The site contains the Pisgah Elementary School and is currently utilized as an elementary school. The following USTs, owned by Buncombe County Schools, are currently, or have been, associated with the site: Tank No. Volume (gallons) Contents (i.e., gasoline, diesel, kerosene, heating oil, waste oil, etc.) Use (resale, heating building, distribution, farm or residential, etc.) Installation Date Date last used Indicate whether UST has been removed or closed in place Date of permanent closure (if applicable) Was a release detected from this UST system? If yes, give date. 1 10,000 Heating oil Heating building Unknown Closed Closed- in-place 7/19/2007 Yes 4/20/1999 2 10,000 Heating oil Heating building 7/1/2007 In Use N/A N/A Yes 8/11/2010 There have been two separate releases of heating oil at the site. The first release of heating oil, Incident No. 20390 on April 20, 1999, was from product lines associated with UST #1. This UST was adjacent to the exterior wall of a boiler room/basement in the southeast portion of the elementary school, which is located in the same general vicinity as the current release/source area. Following the completion of a Comprehensive Site Assessment and several groundwater monitoring events, the first release reportedly qualified for closure under risk-based standards. The second release of heating oil, Incident No. 28870 on August 11, 2010, was reportedly a discharge from a vent line associated with UST #2 to the ground surface on the southeastern side of the elementary school. A 75-gallon day tank reportedly failed to operate properly thereby allowing Report of Water Quality Monitoring (January 2022) February 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.07 3 heating oil from the 10,000-gallon heating oil storage tank to continue to be pumped to the day tank. This condition resulted in a release of approximately 1,000 to 2,000 gallons of heating oil. The day tank is a 75-gallon staging/pumping device located in the basement to allow delivery of product into the boiler upon demand. Additionally, heating oil had reportedly entered a groundwater removal sump located in the boiler room/basement of the elementary school and was subsequently released to the ground surface at a discharge outfall located approximately 150 feet northeast of the release. Initial abatement actions reportedly included the excavation of apparent fuel oil-impacted soil at the base of the vent line adjacent to the southeastern portion of the building and from the sump discharge area in August 2010 (approximately 40 tons), removal of fuel oil-impacted water and free- phase fuel oil from the sump on three occasions between August 2010 and September 2010 (approximately 1,600 gallons) and installation of an oil/water separator on the sump system in the boiler, which is currently inspected and maintained by Mountain Environmental Group, Inc. Confirmation soil samples were reportedly not collected from the sidewalls of either excavation because apparent soil contamination remained in-situ. A Limited Site Assessment Report (LSA report), dated November 11, 2010, by Mountain Environmental Group, Inc. identified the receptor information relative to the site. The LSA Report indicated 11 water supply wells were identified within 1,500 feet of the source area, which is the basis for the high-risk classification of the site. During the August 2020 groundwater monitoring event, Wood performed an update to the receptor survey by requesting information on active water accounts within 1,500 feet of the source area. Information regarding the water supply wells is provided in Table 1. The LSA identified the boiler room/basement at the school as the only known subsurface structure that could be affected by the release. The LSA report indicated that the accumulation of petroleum vapors had not been identified to date. The closest water supply well to the source area is located on-site approximately 300 feet to the southwest of the source area, but is reportedly disconnected and not abandoned. Curtis Creek flows from west to east and is approximately 315 feet south of the source area. The confluence of Curtis Creek and South Hominy Creek is approximately 550 feet southeast of the site. South Hominy Creek is a tributary of the French Broad River water system/basin. The LSA Report indicated the site was not located in a well- head protection area. Report of Water Quality Monitoring (January 2022) February 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.07 4 The LSA report identified concentrations of petroleum constituents p-iropropyltolulene, naphthalene, 1,2,4-trimethylbenzene, 1-methylnaphthalene, C9-C18 aliphatics and C9-C22 aromatics exceeded the soil-to-water maximum soil contaminant concentration levels (MSCCs) and C9-C22 aromatics exceeded its residential MSCC in the source area, as identified in Table 1 of NCDEQs Guidelines for Assessment and Corrective Action for UST Releases, dated July 15, 2008, Change 3, Effective December 1, 2013. Additionally, the LSA report indicated concentrations of petroleum constituents C9-C18 aliphatics and C9-C22 aromatics exceeded the 15 North Carolina Administrative Code 02L.0202 Groundwater Classifications and Standards, dated April 1, 2013, (NCAC 2L groundwater standards) in the groundwater sample collected from MW-2 in the vicinity of the sump discharge outfall. A Comprehensive Site Assessment Addendum (CSA Report), dated August 24, 2011, by Mountain Environmental Group indicated the concentration of petroleum constituent naphthalene exceeded the soil-to-groundwater MSCC in a soil sample collected from the source area in the vicinity of MW-4. The CSA Report also indicated petroleum constituents benzene, naphthalene, C9-C18 aliphatics and C9-C22 aromatics were detected at concentrations that exceeded the NCAC 2L groundwater standard in groundwater samples collected from the source area (MW-1 and MW-4 area), and that free product was detected in MW-4 in July 2011. The CSA report also indicated that the petroleum constituents C9-C18 aliphatics and C9–C22 aromatics were detected at concentrations that exceeded the NCAC 2L groundwater standards in the groundwater sample collected from MW-2. The CSA Report recommended semi-annually groundwater monitoring of monitoring wells MW-1, MW-2, MW-3 and MW-4 be implemented at the site. Skimmer maintenance events were performed at MW-4 from late 2011 to late 2016 and from early 2018 to June 2019. Free product was not observed in MW-4 from late 2016 to early 2018 and skimmer maintenance was not performed during 2017. Free product has not been observed in MW-4 since the July 2019 monitoring event and the skimmer was removed during the August 2020 monitoring event. In a Notice of Regulatory Requirements (NORR) letter, dated August 28, 2019, NCDEQ approved Wood’s recommendation of continued semi-annual groundwater monitoring at the site scheduled for early 2020. In State Trust Fund Electronic Preapproval Task Authorization Forms signed on January 23, Report of Water Quality Monitoring (January 2022) February 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.07 5 2019 and May 16, 2019, NCDEQ indicated analysis of samples for Volatile Petroleum Hydrocarbons (VPH) and Extractable Petroleum Hydrocarbons (EPH) according to the Massachusetts Department of Environmental Protection (MADEP) methods was not authorized/warranted. In response to Wood’s February 2020 Report of Water Quality Monitoring, NCDEQ issued a NORR dated March 9, 2020 which recommended discontinuing monitoring activities at monitoring wells MW-2 and MW-3. NCDEQ recommended analysis of groundwater samples collected from MW-1 and MW-4 for VPH and EPH according to the MADEP methods. Additionally, NCDEQ approved Wood’s recommendation for the removal of the free product skimmer from MW-4. In response to Wood’s February 2021 Report of Water Quality Monitoring, NCDEQ issued a NORR dated February 22, 2021, which concurred with Wood’s recommendation for continued semi-annual monitoring of MW-1 and MW-4 for VPH and EPH according to the MADEP methods. In response to Wood’s August 2021 Report of Water Quality Monitoring, NCDEQ issued a NORR dated September 7, 2021 which recommended, in an effort to achieve site closure, sampling all on- site wells (MW-1 through MW-4) and analyzing the groundwater samples for volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs) in addition to the previously approved MADEP EPH and VPH analysis. 1.3. Site Geology and Hydrogeology The site is located within the Blue Ridge Physiographic Province. Based on a review of the geologic map, the site is underlain by rocks of the Ashe Metamorphic and Tallulah Falls Formation, which are described as metagraywacke (foliated to massive; interlayered and gradational with mica schist, muscovite-biotite gneiss and rare graphitic schist) and/or muscovite-biotite gneiss (interlayered and gradational with mica schist, minor amphibolite and hornblende gneiss). The bedrock in the Blue Ridge Physiographic Province is a complex crystalline formation that has been faulted and contorted by past tectonic movements. The rock has weathered to residual soils, which form the mantle for the hillsides and hilltops. The typical residual soil profile in areas not disturbed by erosion or human activities consists of silty and/or clayey soils near the surface where weathering is more advanced, underlain by sandy silt and silty sand. There may be colluvial (old land-slide) material on the slopes and alluvial sediments in stream valleys and floodplains. Report of Water Quality Monitoring (January 2022) February 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.07 6 According to the Soil Survey of Buncombe County, soils at the site are described as Udorthents, which include soils in areas where the native soil profile has been disturbed by earthwork or development. According to the USGS Topographic Map, dated 1961, photorevised 1990, the site ranges from approximately 2,240 feet to 2,260 feet above mean sea level. Surface drainage at the site appears to generally flow to the southeast towards Curtis Creek. Curtis Creek flows from west to east and is approximately 315 feet south of the source area. The confluence of Curtis Creek and South Hominy Creek is approximately 550 feet southeast of the site. South Hominy Creek is a tributary of the French Broad River water system/basin. Assuming that the groundwater table generally mirrors the local topography, groundwater beneath the site is expected to generally flow to the southeast towards Curtis Creek. Based on the CSA and LSA Reports referenced above, soils in the source area and in the vicinity of the sump discharge outfall reportedly consist of five to eight feet of silty clay fill material overlying sandy silt native material. 2. FIELD ACTIVITIES Wood conducted groundwater sampling activities at the Site on January 5 2022. Monitoring wells MW-1 through MW-4 were gauged for depth to water and presence/absence of free product. Free product was not encountered during the January 5, 2022 monitoring event. The depths to water ranged from 5.37 feet below ground surface in MW-2 to 14.44 feet below ground surface in MW-3, and are presented in Table 2 along with well construction details. Water levels measured in MW-1 through MW-4 are presented along with historical groundwater elevations in Table 3. The groundwater elevations measured during the January 2022 event were generally consistent as compared to the previous events. Following water level measurements, monitoring wells MW-1, MW-2, MW-3, and MW-4 were purged by removing three volumes of water under static conditions with pre-cleaned, single-use, polyethylene bailers. The purge water from the wells was discharged to the ground surface in proximity to the well in a manner that precluded erosion or surface runoff. Field measurements of Report of Water Quality Monitoring (January 2022) February 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.07 7 temperature, specific conductance, and pH of groundwater at each sample location were recorded. Monitoring well locations are depicted on Figure 2. Following purging, groundwater samples were collected from monitoring wells MW-1, MW-2, MW- 3, and MW-4. The groundwater samples were placed into laboratory-prepared containers labeled with sampling information, project information and the requested methods of analysis. The groundwater samples were placed in an ice-chilled cooler and delivered under chain-of-custody via overnight delivery to Pace Analytical National Center (a North Carolina-accredited analytical laboratory). The groundwater samples were submitted for laboratory analysis of VOCs according to EPA method 602, SVOCs according to EPA method 625.1, and VPH and EPH according to the MADEP methods (as authorized/specified by NCDEQ). Groundwater potentiometric maps were not drafted based on the uncertainty of the accuracy of top of casing elevations of the monitoring wells at the site. Based on our review of local surficial topography and available groundwater elevation data, groundwater flow is expected to be to the southeast. 3. LABORATORY RESULTS AND DISCUSSION Laboratory analysis of the groundwater samples reported MADEP EPH petroleum hydrocarbon fractions (C9-C18 aliphatics and C19-C36 aliphatics) in the groundwater sample collected from monitoring well MW-4. Concentrations of VOCs, SVOCs, and MADEP VPH petroleum hydrocarbon fractions were not detected above the laboratory reported detection limit in the groundwater samples. Laboratory analytical results are summarized in Table 4. The laboratory analytical reports and chain-of-custody records are included in Appendix A. The analytical results of the detected compounds in groundwater samples were compared to the 15A North Carolina Administrative Code Chapter 2L groundwater standards (groundwater standards). The concentrations of petroleum hydrocarbon fractions C9-C18 aliphatics and C19-C36 aliphatics detected in the groundwater sample collected from MW-4 were above the laboratory method detection limits, but below the groundwater standards. Report of Water Quality Monitoring (January 2022) February 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.07 8 A summary of historical groundwater analytical results is presented in Table 5. Historically, groundwater samples collected at the site were analyzed for VOCs, SVOCs and MADEP EPH and VPH. Per NCDEQ, analysis of groundwater samples by MADEP EPH and VPH ceased in 2017 and 2018. When compared to the historical results, the MADEP EPH and VPH concentrations detected have continued to decrease since August 2021 and are significantly less, an order of magnitude or more, below the concentrations detected prior to 2016. Concentrations of VOCs and SVOCs at the site continue to not be detected above laboratory detection limits. 4. FREE PRODUCT RECOVERY A sump in the boiler room/basement of the school collects and removes groundwater from the basement, passes the water through an oil/water separator, and discharges to a field located in the northeast portion of the site, in the general vicinity of monitoring well MW-2. Approximately 1,600 gallons of fuel oil-impacted water and/or free-phase fuel oil was removed from the sump on three occasions between August 2010 and September 2010 during initial abatement activities. The occurrence of fuel oil in the sump has diminished with time. The oil water separator is currently maintained and serviced by Mountain Environmental Group, Inc. on a quarterly basis. A passive free product skimmer was installed in monitoring well MW-4 on March 7, 2013. The passive skimmer installed in MW-4 did not contain free product during three consecutive monitoring events in 2019 and 2020. Per NCDEQ’s approval, the free product skimmer was removed from MW-4 in August 2020. Free product was not observed during the January 2022 monitoring event. 5. CONCLUSIONS AND RECOMMENDATIONS Groundwater monitoring results indicate concentrations of petroleum hydrocarbon fractions C9- C18 aliphatics and C9–C36 aliphatics were detected above the laboratory reporting limit in the groundwater sample collected from MW-4; however, the detected concentrations were below their respective groundwater standards. Concentrations of VOCs and SVOCs were not detected above the laboratory reporting limits in samples collected from MW-1, MW-2, MW-3 or MW-4. Report of Water Quality Monitoring (January 2022) February 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.07 9 When compared to the historical results, the MADEP EPH and VPH concentrations detected in MW- 4 were less than those concentrations detected in the previous monitoring event in August 2021 and significantly less, an order of magnitude or more, below concentrations detected prior to 2016. Monitoring well MW-4 contained free product from 2011 to November 2016, and from early 2018 to February 2020. Free product was not observed in monitoring well MW-4 during the January 2022 monitoring event, and has not been observed since February 2020. The results of the January 2022 sampling event indicate concentrations of aromatic and aliphatic carbon chains in samples collected from MW-1, and MADEP VPH carbon chains in samples collected from MW-4, have decreased to non-detect. Concentrations of aromatic and aliphatic carbon chains have not been detected above groundwater standards in samples collected from MW-1 for the past three semi-annual monitoring events. Concentrations of MADEP EPH carbon chains at MW-4 have decreased to below groundwater standards. Wood recommends discontinuing semi-annual ground monitoring at MW-1 and continued performance of semi-annual groundwater monitoring of MW-4 for MADEP VPH and EPH. The next semi-annual groundwater monitoring event should be conducted in August 2022. 6. STATEMENTS AND CERTIFICATION 1 Enter the date the monitoring report was due. 2/28/2022 Will this report be submitted after the established due date? YES NO X 2 Was any required information from the above template missing from this report? YES NO X IF the answer to question #1 or# 2 is “YES”, please provide additional information in this cell to explain what was missing and why. Not Applicable. Report of Water Quality Monitoring (January 2022) Pisgah Elementary School February 28, 2022 Wood Project 6252-16-0231.07 3 4 5 6 If applicable, w ill any of the proposed attenuation milestones under the schedule YES NO approved in the Corrective Action Plan not be met? (within a reasonable margin of error) X IF the answer to question #3 is "NO", skip to the certification under #8 below. IF the answer to question #3 is "YES", please generally describe in this cell the possible reason(s) and outline proposed remedies. (This should be described in more detail in the report text above.) Does any known or suspected source zone soil contamination or free product remain outside of the assessed area that could be inhibiting natural attenuation? Has there been an unexpected increase in contaminant mass sufficient to suggest a potential new release from a separate onsite or offsite source? YES NO X YES NO X IF the answer to either question #4 or #5 is "YES", generally describe in this cell any actions recommended to further assess or clean up this known or suspected source. (This should be described in more detail in the report text above.) Certification: I, Matthew E. Wallace, a Professional Engineer for Wood Environment & Infrastructure Solutions, Inc., do certify that the information contained in this,,n~fi¥A~1);J, correct and accurate to the best of my kn WI d ,,,,~ C ~ ,<,•lf1,, o e ge. ,,''--< y,. f·, r-/ .. .,.✓1, ,''"'=' .. ~..: ............ c~,, ❖_,. ,S-o·" . .,.,0.-'r ';;. S S / ()A~.. { / ~ ~-. /~ v·• . .,,,,~ $ ...,_ /q_ "1/• .. s/ ~ §·-.::;;·, \ y-; :: ' SJ::AL ' = L .n~~ ~~33 i ii -[ , w(X.,{ -::.>'\.. ~,1,.,, / !Jf 1------\--------'----%'/'~ ~,ft::_o IN f..J;.'?;.-'~'f# ,.,. ., 7' $' -----' 'v , ,, Wood Environment & Infrastructure Solutio;f ~~ffi~®\~"~~ practice engineering and geology in North Carolina. The engineering license number of the corporation is F-1253, and the geology license number of the corporation is C-247. 10 TABLES TABLE 1WATER SUPPLY WELLS WITHIN 1,500-FOOT RADIUS OF SOURCEPisgah Elementary School1495 Pisgah HighwayCandler, North CarolinaWood Project 6252-16-0231Well NumberBuncombe County PINWell Owner Property Address Owner AddressActive MunicipalWater AccountComments1 8695-08-6015 Kuykendall, O.L. & Carolyn M.100 Medford Branch Rd.,Candler NC 287153509 Amhurst Dr.,Gastonia NC 28056No Dug well - not in use2 8695-08-6015 Kuykendall, O.L. & Carolyn M.100 Medford Branch Rd.,Candler NC 287163509 Amhurst Dr.,Gastonia NC 28056No Drilled well - used for drinking supply3 8695-08-7837 White Rock Bapt Church91 Medford Branch Rd.,Candler NC 28717776 Upper Glady Fork Rd.,Candler NC 28715No Drilled well - used for drinking supply4 8685-97-6760 Fowler, David J.20 Medford Branch Rd.,Candler NC 2871872 Israel Rd., Candler NC 28715Yes Drilled well - used for drinking supply5 8685-98-5132 Pressley, Carol Jr. & Betty99999 Pisgah HwyCandler NC 287193 Medford Branch Rd.,Candler NC 28715No Dug well - not in use6 8685-97-1941 Loeffler, Benjamine & Rachel Ann1540 Pisgah HwyCandler NC 287201540 Pisgah Hwy Candler NC 28715Yes Drilled well - used for drinking supply7 8685-88-6435 Davis, James Walter & Anita G1512 Pisgah HwyCandler NC 287211512 Pisgah Hwy Candler NC 28715No Drilled well - used for drinking supply8 8685-98-6614 Messer, Bradley Charles & Sarina Shepard1525 Pisgah HwyCandler NC 287221525 Pisgah Hwy Candler NC 28715No Dug well - used for drinking supply9 8685-99-8192 Buncombe County Board Of Education1495 Pisgah HwyCandler NC 28723175 Bingham Rd., Asheville NC 28806Yes Drilled well - not in use10 8685-99-0158 Childs, William Lester & Elizabeth Elaine8 Curtis Creek Rd.,Candler NC 287248 Curtis Creek Rd., Candler NC 28715No Well details not verified11 8685-99-3122 White Rock Bapt Church20 White Rock Church Rd.,Candler NC 28725776 Upper Glady Fork Rd., Candler NC 28715No Well details not verified12 8685-98-0786 Burgess, Shelly & Ryan11 Curtis Creek Rd.,Candler NC 28727385 Farnor Rd., Erwin TN 37650No Well details not verified13 8695-08-6578 The Primitive Quartet Llc1433 Pisgah HwyCandler NC 28728118 Israel Rd., Candler NC 28715No Well details not verifiedN/A 8685-87-5954 Courson, Franklin L.1544 Pisgah HwyCandler NC 287261544 Pisgah Hwy Candler NC 28715No Well details not verified1. Information in Table 1 obtained from Limited Site Assessment Report, dated November 11, 2010, by Mountain Environmental Group, Inc. and from information provided by City of Asheville Water Department dated September 2, 2020Prepared By: RMC 8/27/21Checked by: GLH 8/30/21 TABLE 2MONITORING WELL CONSTRUCTION DETAILSPisgah Elementary School1495 Pisgah HighwayCandler, North Carolina Wood Project 6252-16-0231MW-1 Type II 9/15/2010 99.56 11.90 87.66 2" 5.00 - 30.0030MW-2 Type II 9/21/2010 90.98 5.37 85.61 2" 4.00 - 14.0014MW-3 Type II 5/18/2011 98.57 14.44 84.13 2" 7.00 - 27.0027MW-4 Type II 6/6/2011 98.96 11.19 87.77 2" 10.00 - 30.0030NOTES:1. TOC elevations obtained from Groundwater Monitoring Report, dated October 28, 2015, by Mountain Environmental Group, Inc., which indicates TOC elevation data were estimated with a topographic map and well locations.2. Depths to groundwater were recorded in feet below top of casing elevation on January 5, 2022.TOC = Top Of Casing.Prepared by: GLH 2/17/2022Checked by: MEW 2/17/2022Screened Interval (ft) Total Depth (ft)Well Diameter (inches)Well Well TypeDate InstalledTOC Elevation1 (ft)Estimated Groundwater ElevationDepth to Groundwater2 TABLE 3 HISTORICAL GROUNDWATER ELEVATIONS Pisgah Elementary School 1495 Pisgah Highway Candler, North Carolina Wood Project 6252-16-0231 Well ID Date TOC Elevation Depth to Free Product Depth to Water1 Free Product Thickness Groundwater Elevation2 10/1/2010 -- 12.56 -- 87.00 7/28/2011 -- 12.20 -- 87.36 12/29/2011 -- 11.49 -- 88.07 11/8/2012 -- 13.00 -- 86.56 6/27/2013 -- 11.70 -- 87.86 1/19/2015 -- 11.99 -- 87.57 7/30/2015 -- 13.01 -- 86.55 1/27/2016 -- 11.31 -- 88.25 9/28/2016 -- 12.87 -- 86.69 2/22/2016 -- 12.40 -- 87.16 7/18/2017 -- 12.40 -- 87.16 3/13/2018 -- 11.81 -- 87.75 8/24/2018 -- 11.97 -- 87.59 2/19/2019 -- 11.50 -- 88.06 7/30/2019 -- 11.64 -- 87.92 2/19/2020 -- 11.15 -- 88.41 8/26/2020 -- 11.34 -- 88.22 2/2/2021 -- 11.82 -- 87.74 8/16/2021 -- 12.00 -- 87.56 1/5/2022 -- 11.90 -- 87.66 MW-1 99.56 Page 1 of 4 TABLE 3 HISTORICAL GROUNDWATER ELEVATIONS Pisgah Elementary School 1495 Pisgah Highway Candler, North Carolina Wood Project 6252-16-0231 Well ID Date TOC Elevation Depth to Free Product Depth to Water1 Free Product Thickness Groundwater Elevation2 10/1/2010 -- 6.32 -- 84.66 7/28/2011 -- 6.67 -- 84.31 12/29/2011 -- 5.92 -- 85.06 6/27/2013 -- 6.35 -- 84.63 1/19/2015 -- 5.78 -- 85.20 7/30/2015 -- 7.03 -- 83.95 1/27/2016 -- 3.05 -- 87.93 9/28/2016 -- 6.02 -- 84.96 2/22/2016 -- 6.52 -- 84.46 7/18/2017 -- 6.75 -- 84.23 3/13/2018 -- 5.80 -- 85.18 8/24/2018 -- 7.57 -- 83.41 2/19/2019 -- 4.95 -- 86.03 7/30/2019 -- 5.73 -- 85.25 2/19/2020 -- 5.65 -- 85.33 2/2/2021 -- 6.35 -- 84.63 8/16/2021 -- 6.43 -- 84.55 1/5/2022 -- 5.37 -- 85.61 90.98MW-2 Page 2 of 4 TABLE 3 HISTORICAL GROUNDWATER ELEVATIONS Pisgah Elementary School 1495 Pisgah Highway Candler, North Carolina Wood Project 6252-16-0231 Well ID Date TOC Elevation Depth to Free Product Depth to Water1 Free Product Thickness Groundwater Elevation2 6/6/2011 -- 14.80 -- 83.77 7/28/2011 -- 14.18 -- 84.39 12/29/2011 -- 13.70 -- 84.87 11/8/2012 -- 15.32 -- 83.25 6/27/2013 -- 14.30 -- 84.27 1/19/2015 -- 13.23 -- 85.34 7/30/2015 -- 14.69 -- 83.61 1/27/2016 -- 13.19 -- 85.38 9/28/2016 -- 15.13 -- 83.44 2/22/2016 -- 14.95 -- 83.62 7/18/2017 -- 15.12 -- 83.45 3/13/2018 -- 14.25 -- 84.32 8/24/2018 -- 14.67 -- 83.90 2/19/2019 -- 13.75 -- 84.82 7/30/2019 -- 13.82 -- 84.75 2/19/2020 -- 13.10 -- 85.47 2/2/2021 -- 14.55 -- 84.02 8/16/2021 -- 14.61 -- 83.96 1/5/2022 -- 14.44 -- 84.13 MW-3 98.57 Page 3 of 4 TABLE 3 HISTORICAL GROUNDWATER ELEVATIONS Pisgah Elementary School 1495 Pisgah Highway Candler, North Carolina Wood Project 6252-16-0231 Well ID Date TOC Elevation Depth to Free Product Depth to Water1 Free Product Thickness Groundwater Elevation2 6/6/2011 -- 11.99 -- 86.97 7/28/2011 11.49 11.52 0.03 87.46 12/29/2011 10.89 10.98 0.09 88.05 11/8/2012 12.26 13.24 0.98 86.50 6/27/2013 1/19/2015 10.87 11.27 0.40 88.01 7/30/2015 11.66 11.67 0.01 87.30 1/27/2016 11.00 11.20 0.25 87.96 9/28/2016 12.93 12.95 0.02 86.01 2/22/2016 -- 11.95 -- 87.01 7/18/2017 -- 12.05 -- 86.91 3/13/2018 11.73 11.75 0.02 87.23 8/24/2018 11.45 11.47 0.02 87.51 2/19/2019 10.98 11.00 0.02 87.98 7/30/2019 -- 10.93 -- 88.03 2/19/2020 -- 10.53 -- 88.43 8/26/2020 -- 10.73 -- 88.23 2/2/2021 -- 11.18 -- 87.78 8/16/2021 -- 11.31 -- 87.65 1/5/2022 -- 11.19 -- 87.77 NOTES:Prepared by: GLH 2/16/2022 1. Reported in feet below top of casing.Checked by: MEW 2/17/2022 2. Measured in feet relative to elevation from topographic map. no free product when skimmer removed 3. Groundwater elevations were corrected by subtracting 80% of the free product thickness from the depth to water. MW-4 98.96 Page 4 of 4 TABLE 4SUMMARY OF LABORATORY ANALYTICAL RESULTS - JANUARY 2022 Pisgah Elementary School1495 Pisgah HighwayCandler, North CarolinaWood Project: 6252-16-0231C5-C8 aliphatics *C9-C18 aliphatics **C9-C22 aromatics C19-C36 aliphaticsGroundwater Standard 400 700 200 10,000MW-1 <100 <100 <100 <100MW-2 <100 <100 <100 <100MW-3 <100 <100 <100 <100MW-4 <100 102 <100 110Notes:1. Concentrations reported in micrograms per liter (ug/L).2. <100 - Indicate analyte not detected at or above laboratory reporting limit.3. Groundwater Standard based on 15 North Carolina Administrative Code (NCAC) 02L.0202 Groundwater Classifications and Standards, dated April 1, 2013.4. MADEP - Massachusets Department of Environmental Protection; VPH - Volatile Petroleum Hydrocarbons; EPH - Extractable Petroleum Hydrocarbons 5. MADEP VPH and EPH Results calculated as indicated in North Carolina Department of Environmental Quality's UST Section's Assessment Guidelines, dated January 19, 2021 - Table 10 Worksheet for calculating MADEP Groundwater Results. (*) Calculated by adding C9 - C12 Aliphatics and C9-C18 Aliphatics; (**) Calculated by adding C9-C10 Aromatics and C11-C22 AromaticsPrepared by: GLH 2/17/22Checked by: MEW 2/17/22 TABLE 5HISTORICAL ANALYTICAL RESULTSPisgah Elementary School1495 Pisgah HighwayCandler, North Carolina Wood Project: 6252-16-02311 600 600 500 6 300 60 200 5.6 400 700 200 10,00010/1/2010 ND ND ND 2.7 ND ND ND ND ND ND ND ND ND7/28/201111.95.8 2.6 75.712.8ND ND ND ND - 264 190.3 ND12/29/201122.76.0 7.2 116.519.9ND ND ND ND ND1,137 644ND11/8/2012 ND ND ND 1.1 ND ND ND ND ND ND ND ND ND6/27/2013 0.99 ND 1.8 18.3 ND ND ND ND ND ND2,706 1,915ND1/19/2015 ND ND ND 1.1 ND 9.3 8.1 9.1 ND -58,520 64,929 12,4007/30/2015 ND ND ND ND ND ND ND ND 5.6 ND20,721 8,308.24,7601/27/20161.02ND ND 3.56 1.87 ND ND ND ND ND1,359 7834019/28/2016 ND ND ND 3.53 2.40 ND ND ND ND ND735 5312022/22/2017 ND ND ND ND ND ND ND ND ND ND 122 ND ND7/18/2017 ND ND ND ND ND ND ND ND ND ND ND ND ND3/13/2018 ND ND ND ND 2.05 ND ND ND ND ND 3992331408/24/2018 ND ND ND ND 2.03 ND ND ND ND ND 129278ND2/18/2019 ND ND ND ND ND ND ND ND ND NA NA NA NA7/30/2019 ND ND ND ND ND ND ND ND ND NA NA NA NA2/19/2020 ND ND ND ND ND ND ND ND ND NA NA NA NA8/26/2020 NA NA NA NA NA NA NA NA NA ND1,339 4325342/2/2021 NA NA NA NA NA NA NA NA NA ND 156 139 ND8/16/2021 NA NA NA NA NA NA NA NA NA ND 101 ND ND1/5/2022 ND ND ND ND ND ND ND ND ND ND ND ND ND C19-C36 aliphaticsbenzenetolueneethylbenzenexylenesnaphthalenefluorenephenanthrenebis-(2-ethylhexyl) phthalate*C9-C18 aliphaticspyrene**C9-C22 aromaticsGroundwater StandardC5-C8 aliphaticsMW-1Page 1 of 3 TABLE 5HISTORICAL ANALYTICAL RESULTSPisgah Elementary School1495 Pisgah HighwayCandler, North Carolina Wood Project: 6252-16-02311 600 600 500 6 300 60 200 5.6 400 700 200 10,000 C19-C36 aliphaticsbenzenetolueneethylbenzenexylenesnaphthalenefluorenephenanthrenebis-(2-ethylhexyl) phthalate*C9-C18aliphaticspyrene**C9-C22 aromaticsGroundwater StandardC5-C8 aliphatics10/1/2010 ND ND 1.1 34.4 ND ND ND ND ND ND1,230 288ND7/28/2011 ND ND ND ND 3.7 ND ND ND ND - 114 ND ND12/29/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND11/8/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND6/27/2013 ND ND ND ND ND ND ND ND ND ND ND ND ND1/19/2015 ND ND ND ND ND ND ND ND ND - ND ND ND7/30/2015 ND ND ND ND ND ND ND ND ND ND ND ND ND1/27/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND9/28/2016 ND ND ND ND 1.08 ND ND ND ND ND ND ND ND2/22/2017 ND ND ND ND ND ND ND ND ND ND ND ND ND7/18/2017 ND ND ND ND ND ND ND ND ND ND ND ND ND3/13/2018 ND ND ND ND ND ND ND ND ND ND ND ND ND8/24/2018 ND ND ND ND ND ND ND ND ND ND ND ND ND2/18/2019 ND ND ND ND ND ND ND ND ND NA NA NA NA7/30/2019 ND ND ND ND ND ND ND ND ND NA NA NA NA2/19/2020 ND ND ND ND ND ND ND ND ND NA NA NA NA1/5/2022 ND ND ND ND ND ND ND ND ND ND ND ND ND6/6/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND7/28/2011 ND ND ND ND ND ND ND ND ND - ND ND ND12/29/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND11/8/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND6/27/2013 ND ND ND ND ND ND ND ND ND ND ND ND ND1/19/2015 ND ND ND ND ND ND ND ND ND - ND ND ND7/30/2015 ND ND ND ND ND ND ND ND ND ND ND ND ND1/27/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND9/28/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND2/22/2017 ND ND ND ND ND ND ND ND ND ND ND ND ND7/18/2017 ND ND ND ND ND ND ND ND ND ND ND ND ND3/13/2018 ND ND ND ND ND ND ND ND ND ND ND ND ND8/24/2018 ND ND ND ND ND ND ND ND ND ND ND ND ND2/18/2019 ND ND ND ND ND ND ND ND ND NA NA NA NA7/30/2019 ND ND ND ND ND ND ND ND ND NA NA NA NA2/19/2020 ND ND ND ND ND ND ND ND ND NA NA NA NA1/5/2022 ND ND ND ND ND ND ND ND ND ND ND ND NDMW-2MW-3Page 2 of 3 TABLE 5HISTORICAL ANALYTICAL RESULTSPisgah Elementary School1495 Pisgah HighwayCandler, North Carolina Wood Project: 6252-16-02311 600 600 500 6 300 60 200 5.6 400 700 200 10,000 C19-C36 aliphaticsbenzenetolueneethylbenzenexylenesnaphthalenefluorenephenanthrenebis-(2-ethylhexyl) phthalate*C9-C18 aliphaticspyrene**C9-C22 aromaticsGroundwater StandardC5-C8 aliphatics6/6/20112.512.1 22.5 98.410.8ND ND ND ND ND27,740 10,290ND2/22/2017 ND ND ND ND ND ND ND ND ND ND 4232931487/18/2017 ND ND ND ND ND ND ND ND ND ND 306 156 1027/30/2019 ND ND ND ND ND 1.73 ND 3.02 ND NA NA NA NA2/19/2020 ND ND ND ND ND ND ND ND ND NA NA NA NA8/26/2020 NA NA NA NA NA NA NA NA NA ND1,060 5034852/2/2021 NA NA NA NA NA NA NA NA NA ND 7004272598/16/2021 NA NA NA NA NA NA NA NA NA ND729 3913691/5/2022 ND ND ND ND ND ND ND ND ND ND 102 ND 110NOTES:1. Concentrations reported in micrograms per liter (ug/L).2. ND - Indicate analyte not detected at or above laboratory reporting limit.3. Groundwater Standard based on 15 North Carolina Administrative Code (NCAC) 02L.0202 Groundwater Classifications and Standards, dated April 1, 2013.4. Bold numbers indicate detected concentration is above the Groundwater Standard.5. MADEP - Massachusets Department of Environmental Protection; VPH - Volatile Petroleum Hydrocarbons; EPH - Extractable Petroleum Hydrocarbons 6. MADEP VPH and EPH Results calculated as indicated in North Carolina Department of Environmental Quality's UST Section's Assessment Guidelines, dated January 19, 2021 - Table 10 Worksheet for calculating MADEP Groundwater Results. (*) Calculated by adding C9 - C12 Aliphatics and C9-C18 Aliphatics; (**) Calculated by adding C9-C10 Aromatics and C11-C22 Aromatics (-) Indicates Wood does not have record of laboratory analytical data from this date. NA - Indicates constituent not analyzed. Prepared by: GLH 2/17/2022Checked by: MEW 2/17/2022MW-4Page 3 of 3 FIGURES © OpenStreetMap (and) contributors, CC-BY-SA Sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), swisstopo, © OpenStreetMap contributors, and the GIS User Community Figure No.PREPARED BY: G. HUTCHINS MAP PROJECTION:NC State Plane (NAD83, feet) 4 0 500 1,000 Feet Although every effort has been made to ensure the accuracy of information, errors and conditions originating from the physicalsources used to develop the database may be reflected in the data supplied. The requestor must be aware of data conditions andultimately bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collectionmethodology, currency of data, and other conditions specific to certain data. TITLE: 1 The map shown here has been createdwith all due and reasonable care and isstrictly for use with Wood project6252.16.0231. Wood assumes no liability,direct or indirect, whatsoever or any such third party or unintended use. TOPOGRAPHIC SITE MAP PISGAH ELEMENTARY 1495 PISGAH HIGHWAY CANDLER, NORTH CAROLINA CHECKED BY: M. WALLACE DATE: 3/1/2022 DATE: 3/1/2022 PROJECT NUMBER:6252.16.0231 Document Path: P:\Buncombe County Schools\Pisgah Elementary\GIS\Figure 1 - Topo.mxd Legend SUBJECT PROPERTY SUBJECT PROPERTY CURTIS C R EEK © OpenStreetMap (and) contributors, CC-BY-SA @A @A @A @A MW-1 MW-2 MW-3 MW-4 Figure No.PREPARED BY: G. HUTCHINS MAP PROJECTION:NC State Plane (NAD83, feet) Ê 02550 Feet Although every effort has been made to ensure the accuracy of information, errors and conditions originating from the physicalsources used to develop the database may be reflected in the data supplied. The requestor must be aware of data conditions andultimately bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collectionmethodology, currency of data, and other conditions specific to certain data. TITLE: 2 The map shown here has been createdwith all due and reasonable care and isstrictly for use with Wood project6252.16.0231 Wood assumes no liability,direct or indirect, whatsoever or any such third party or unintended use. MONITORING WELL LOCATION MAP PISGAH ELEMENTARY 1495 PISGAH HIGHWAY CANDLER, NORTH CAROLINA CHECKED BY: M. WALLACE DATE: 3/1/2022 DATE: 3/1/2022 PROJECT NUMBER:6225.16.0231 Document Path: P:\Buncombe County Schools\Pisgah Elementary\GIS\Figure 2 - Site Map.mxd Legend SUBJECT PROPERTY @A MONITORING WELL LOCATION PISGAH HWY ACTIVE FUEL OIL UST MW-1 APPENDIX A LABORATORY REPORTS AND CHAIN-OF-CUSTODY RECORDS ANALYTICAL REPORT January 14, 2022 Wood E&I Solutions Inc. - Asheville, NC Sample Delivery Group:L1448734 Samples Received:01/06/2022 Project Number:6252-16-0231.08 Description:Pisgah Elementary Site:STF INCIDENT 28870 Report To:Rodney Clark 1308-C Patton Avenue Asheville, NC 28806 Entire Report Reviewed By: January 14, 2022 [Preliminary Report] Heather J Wagner Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 1 of 23 January 14, 2022 Heather J Wagner Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 1 of 23 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 MW-1 L1448734-01 5 MW-2 L1448734-02 7 MW-3 L1448734-03 9 MW-4 L1448734-04 11 TRIP BLANK L1448734-05 13 Qc: Quality Control Summary 14 Volatile Petroleum Hydrocarbons by Method MADEPV 14 Volatile Organic Compounds (GC/MS) by Method 602MS 15 TPH by Method MADEPE 16 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 17 Gl: Glossary of Terms 21 Al: Accreditations & Locations 22 Sc: Sample Chain of Custody 23 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 2 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 2 of 23 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-1 L1448734-01 GW 01/05/22 15:00 01/06/22 09:45 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 602MS WG1799550 1 01/10/22 00:45 01/10/22 00:45 JAH Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 625.1 WG1799444 1 01/09/22 20:00 01/10/22 17:46 JNJ Mt. Juliet, TN Collected by Collected date/time Received date/time MW-2 L1448734-02 GW 01/05/22 13:20 01/06/22 09:45 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Petroleum Hydrocarbons by Method MADEPV WG1801473 1 01/13/22 19:11 01/13/22 19:11 BMB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 602MS WG1799550 1 01/10/22 01:07 01/10/22 01:07 JAH Mt. Juliet, TN TPH by Method MADEPE WG1800086 1 01/10/22 11:07 01/11/22 19:35 JN Mt. Juliet, TN TPH by Method MADEPE WG1800086 1 01/10/22 11:07 01/11/22 20:41 JN Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 625.1 WG1799444 1 01/09/22 20:00 01/10/22 18:08 JNJ Mt. Juliet, TN Collected by Collected date/time Received date/time MW-3 L1448734-03 GW 01/05/22 14:00 01/06/22 09:45 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Petroleum Hydrocarbons by Method MADEPV WG1801473 1 01/13/22 19:44 01/13/22 19:44 BMB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 602MS WG1799550 1 01/10/22 01:28 01/10/22 01:28 JAH Mt. Juliet, TN TPH by Method MADEPE WG1800086 1 01/10/22 11:07 01/11/22 19:58 JN Mt. Juliet, TN TPH by Method MADEPE WG1800086 1 01/10/22 11:07 01/11/22 20:20 JN Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 625.1 WG1799444 1 01/09/22 20:00 01/10/22 18:29 JNJ Mt. Juliet, TN Collected by Collected date/time Received date/time MW-4 L1448734-04 GW 01/05/22 16:00 01/06/22 09:45 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 602MS WG1799550 1 01/10/22 01:49 01/10/22 01:49 JAH Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 625.1 WG1799444 1 01/09/22 20:00 01/10/22 18:50 JNJ Mt. Juliet, TN Collected by Collected date/time Received date/time TRIP BLANK L1448734-05 GW 01/05/22 00:00 01/06/22 09:45 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 602MS WG1799550 1 01/10/22 00:24 01/10/22 00:24 JAH Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 3 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 3 of 23 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Heather J Wagner Project Manager 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 4 of 23 Heather J Wagner Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 4 of 23 SAMPLE RESULTS - 01 L1448734 MW-1 Collected date/time: 01/05/22 15:00 Volatile Organic Compounds (GC/MS) by Method 602MS Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 01/10/2022 00:45 WG1799550 Toluene ND 1.00 1 01/10/2022 00:45 WG1799550 Ethylbenzene ND 1.00 1 01/10/2022 00:45 WG1799550 Total Xylenes ND 3.00 1 01/10/2022 00:45 WG1799550 Methyl tert-butyl ether ND 1.00 1 01/10/2022 00:45 WG1799550 Di-isopropyl ether ND 1.00 1 01/10/2022 00:45 WG1799550 (S) Toluene-d8 107 80.0-120 01/10/2022 00:45 WG1799550 (S) 4-Bromofluorobenzene 104 77.0-126 01/10/2022 00:45 WG1799550 (S) 1,2-Dichloroethane-d4 92.7 70.0-130 01/10/2022 00:45 WG1799550 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Acenaphthene ND 1.00 1 01/10/2022 17:46 WG1799444 Acenaphthylene ND 1.00 1 01/10/2022 17:46 WG1799444 Anthracene ND 1.00 1 01/10/2022 17:46 WG1799444 Benzidine ND 10.0 1 01/10/2022 17:46 WG1799444 Benzo(a)anthracene ND 1.00 1 01/10/2022 17:46 WG1799444 Benzo(b)fluoranthene ND 1.00 1 01/10/2022 17:46 WG1799444 Benzo(k)fluoranthene ND 1.00 1 01/10/2022 17:46 WG1799444 Benzo(g,h,i)perylene ND 1.00 1 01/10/2022 17:46 WG1799444 Benzo(a)pyrene ND 1.00 1 01/10/2022 17:46 WG1799444 Bis(2-chlorethoxy)methane ND 10.0 1 01/10/2022 17:46 WG1799444 Bis(2-chloroethyl)ether ND 10.0 1 01/10/2022 17:46 WG1799444 2,2-Oxybis(1-Chloropropane)ND 10.0 1 01/10/2022 17:46 WG1799444 4-Bromophenyl-phenylether ND 10.0 1 01/10/2022 17:46 WG1799444 2-Chloronaphthalene ND 1.00 1 01/10/2022 17:46 WG1799444 4-Chlorophenyl-phenylether ND 10.0 1 01/10/2022 17:46 WG1799444 Chrysene ND 1.00 1 01/10/2022 17:46 WG1799444 Dibenz(a,h)anthracene ND 1.00 1 01/10/2022 17:46 WG1799444 3,3-Dichlorobenzidine ND 10.0 1 01/10/2022 17:46 WG1799444 2,4-Dinitrotoluene ND 10.0 1 01/10/2022 17:46 WG1799444 2,6-Dinitrotoluene ND 10.0 1 01/10/2022 17:46 WG1799444 Fluoranthene ND 1.00 1 01/10/2022 17:46 WG1799444 Fluorene ND 1.00 1 01/10/2022 17:46 WG1799444 Hexachlorobenzene ND 1.00 1 01/10/2022 17:46 WG1799444 Hexachloro-1,3-butadiene ND 10.0 1 01/10/2022 17:46 WG1799444 Hexachlorocyclopentadiene ND 10.0 1 01/10/2022 17:46 WG1799444 Hexachloroethane ND 10.0 1 01/10/2022 17:46 WG1799444 Indeno(1,2,3-cd)pyrene ND 1.00 1 01/10/2022 17:46 WG1799444 Isophorone ND 10.0 1 01/10/2022 17:46 WG1799444 Naphthalene ND 1.00 1 01/10/2022 17:46 WG1799444 Nitrobenzene ND 10.0 1 01/10/2022 17:46 WG1799444 n-Nitrosodimethylamine ND 10.0 1 01/10/2022 17:46 WG1799444 n-Nitrosodiphenylamine ND 10.0 1 01/10/2022 17:46 WG1799444 n-Nitrosodi-n-propylamine ND 10.0 1 01/10/2022 17:46 WG1799444 Phenanthrene ND 1.00 1 01/10/2022 17:46 WG1799444 Benzylbutyl phthalate ND 3.00 1 01/10/2022 17:46 WG1799444 Bis(2-ethylhexyl)phthalate ND 3.00 1 01/10/2022 17:46 WG1799444 Di-n-butyl phthalate ND 3.00 1 01/10/2022 17:46 WG1799444 Diethyl phthalate ND 3.00 1 01/10/2022 17:46 WG1799444 Dimethyl phthalate ND 3.00 1 01/10/2022 17:46 WG1799444 Di-n-octyl phthalate ND 3.00 1 01/10/2022 17:46 WG1799444 Pyrene ND 1.00 1 01/10/2022 17:46 WG1799444 1,2,4-Trichlorobenzene ND 10.0 1 01/10/2022 17:46 WG1799444 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 5 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 5 of 23 SAMPLE RESULTS - 01 L1448734 MW-1 Collected date/time: 01/05/22 15:00 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time 4-Chloro-3-methylphenol ND 10.0 1 01/10/2022 17:46 WG1799444 2-Chlorophenol ND 10.0 1 01/10/2022 17:46 WG1799444 2,4-Dichlorophenol ND 10.0 1 01/10/2022 17:46 WG1799444 2,4-Dimethylphenol ND 10.0 1 01/10/2022 17:46 WG1799444 4,6-Dinitro-2-methylphenol ND 10.0 1 01/10/2022 17:46 WG1799444 2,4-Dinitrophenol ND 10.0 1 01/10/2022 17:46 WG1799444 2-Nitrophenol ND 10.0 1 01/10/2022 17:46 WG1799444 4-Nitrophenol ND 10.0 1 01/10/2022 17:46 WG1799444 Pentachlorophenol ND 10.0 1 01/10/2022 17:46 WG1799444 Phenol ND 10.0 1 01/10/2022 17:46 WG1799444 2,4,6-Trichlorophenol ND 10.0 1 01/10/2022 17:46 WG1799444 (S) 2-Fluorophenol 36.6 10.0-120 01/10/2022 17:46 WG1799444 (S) Phenol-d5 23.7 8.00-424 01/10/2022 17:46 WG1799444 (S) Nitrobenzene-d5 64.7 15.0-314 01/10/2022 17:46 WG1799444 (S) 2-Fluorobiphenyl 71.5 22.0-127 01/10/2022 17:46 WG1799444 (S) 2,4,6-Tribromophenol 71.0 10.0-153 01/10/2022 17:46 WG1799444 (S) p-Terphenyl-d14 89.1 29.0-141 01/10/2022 17:46 WG1799444 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 - TENTATIVELY IDENTIFIED COMPOUNDS Result Qualifier RDL Dilution Analysis Batch CAS #RT Analyte ug/l ug/l date / time Number of TICs found: 0 Tentatively Identified compounds (TIC) refers to substances not present in the list of target compounds. Therefore, not all TICs are identified and quantitated using individual standards. TIC listings are prepared utilizing a computerized library search routine of electron impact mass spectral data and evaluation of the relevant data by a mass spectral data specialist. Quantitation is accomplished by relative peak area of the TIC compared to that of the nearest internal standard from the total ion chromatogram. TICs are identified and quantitated only if the peak area is 10% or more of that of the nearest internal standard. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 6 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 6 of 23 SAMPLE RESULTS - 02 L1448734 MW-2 Collected date/time: 01/05/22 13:20 Volatile Petroleum Hydrocarbons by Method MADEPV Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Unadjusted C5-C8 Aliphatics ND 100 1 01/13/2022 19:11 WG1801473 Unadjusted C9-C12 Aliphatics ND 100 1 01/13/2022 19:11 WG1801473 Unadjusted C9-C10 Aromatics ND 100 1 01/13/2022 19:11 WG1801473 Total VPH ND 100 1 01/13/2022 19:11 WG1801473 (S) 2,5-Dibromotoluene(FID)88.1 70.0-130 01/13/2022 19:11 WG1801473 (S) 2,5-Dibromotoluene(PID)84.2 70.0-130 01/13/2022 19:11 WG1801473 Volatile Organic Compounds (GC/MS) by Method 602MS Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 01/10/2022 01:07 WG1799550 Toluene ND 1.00 1 01/10/2022 01:07 WG1799550 Ethylbenzene ND 1.00 1 01/10/2022 01:07 WG1799550 Total Xylenes ND 3.00 1 01/10/2022 01:07 WG1799550 Methyl tert-butyl ether ND 1.00 1 01/10/2022 01:07 WG1799550 Di-isopropyl ether ND 1.00 1 01/10/2022 01:07 WG1799550 (S) Toluene-d8 109 80.0-120 01/10/2022 01:07 WG1799550 (S) 4-Bromofluorobenzene 105 77.0-126 01/10/2022 01:07 WG1799550 (S) 1,2-Dichloroethane-d4 92.6 70.0-130 01/10/2022 01:07 WG1799550 TPH by Method MADEPE Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Unadjusted C9-C18 Aliphatics ND 100 1 01/11/2022 19:35 WG1800086 Unadjusted C19-C36 Aliphatics ND 100 1 01/11/2022 19:35 WG1800086 Unadjusted C11-C22 Aromatics ND 100 1 01/11/2022 20:41 WG1800086 Unadjusted Total Petroleum Hydrocarbons ND 100 1 01/11/2022 19:35 WG1800086 (S) o-Terphenyl 80.4 40.0-140 01/11/2022 20:41 WG1800086 (S) 1-Chloro-octadecane 76.1 40.0-140 01/11/2022 19:35 WG1800086 (S) 2-Fluorobiphenyl 86.3 40.0-140 01/11/2022 20:41 WG1800086 (S) 2-Bromonaphthalene 88.2 40.0-140 01/11/2022 20:41 WG1800086 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Acenaphthene ND 1.00 1 01/10/2022 18:08 WG1799444 Acenaphthylene ND 1.00 1 01/10/2022 18:08 WG1799444 Anthracene ND 1.00 1 01/10/2022 18:08 WG1799444 Benzidine ND 10.0 1 01/10/2022 18:08 WG1799444 Benzo(a)anthracene ND 1.00 1 01/10/2022 18:08 WG1799444 Benzo(b)fluoranthene ND 1.00 1 01/10/2022 18:08 WG1799444 Benzo(k)fluoranthene ND 1.00 1 01/10/2022 18:08 WG1799444 Benzo(g,h,i)perylene ND 1.00 1 01/10/2022 18:08 WG1799444 Benzo(a)pyrene ND 1.00 1 01/10/2022 18:08 WG1799444 Bis(2-chlorethoxy)methane ND 10.0 1 01/10/2022 18:08 WG1799444 Bis(2-chloroethyl)ether ND 10.0 1 01/10/2022 18:08 WG1799444 2,2-Oxybis(1-Chloropropane)ND 10.0 1 01/10/2022 18:08 WG1799444 4-Bromophenyl-phenylether ND 10.0 1 01/10/2022 18:08 WG1799444 2-Chloronaphthalene ND 1.00 1 01/10/2022 18:08 WG1799444 4-Chlorophenyl-phenylether ND 10.0 1 01/10/2022 18:08 WG1799444 Chrysene ND 1.00 1 01/10/2022 18:08 WG1799444 Dibenz(a,h)anthracene ND 1.00 1 01/10/2022 18:08 WG1799444 3,3-Dichlorobenzidine ND 10.0 1 01/10/2022 18:08 WG1799444 2,4-Dinitrotoluene ND 10.0 1 01/10/2022 18:08 WG1799444 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 7 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 7 of 23 SAMPLE RESULTS - 02 L1448734 MW-2 Collected date/time: 01/05/22 13:20 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time 2,6-Dinitrotoluene ND 10.0 1 01/10/2022 18:08 WG1799444 Fluoranthene ND 1.00 1 01/10/2022 18:08 WG1799444 Fluorene ND 1.00 1 01/10/2022 18:08 WG1799444 Hexachlorobenzene ND 1.00 1 01/10/2022 18:08 WG1799444 Hexachloro-1,3-butadiene ND 10.0 1 01/10/2022 18:08 WG1799444 Hexachlorocyclopentadiene ND 10.0 1 01/10/2022 18:08 WG1799444 Hexachloroethane ND 10.0 1 01/10/2022 18:08 WG1799444 Indeno(1,2,3-cd)pyrene ND 1.00 1 01/10/2022 18:08 WG1799444 Isophorone ND 10.0 1 01/10/2022 18:08 WG1799444 Naphthalene ND 1.00 1 01/10/2022 18:08 WG1799444 Nitrobenzene ND 10.0 1 01/10/2022 18:08 WG1799444 n-Nitrosodimethylamine ND 10.0 1 01/10/2022 18:08 WG1799444 n-Nitrosodiphenylamine ND 10.0 1 01/10/2022 18:08 WG1799444 n-Nitrosodi-n-propylamine ND 10.0 1 01/10/2022 18:08 WG1799444 Phenanthrene ND 1.00 1 01/10/2022 18:08 WG1799444 Benzylbutyl phthalate ND 3.00 1 01/10/2022 18:08 WG1799444 Bis(2-ethylhexyl)phthalate ND 3.00 1 01/10/2022 18:08 WG1799444 Di-n-butyl phthalate ND 3.00 1 01/10/2022 18:08 WG1799444 Diethyl phthalate ND 3.00 1 01/10/2022 18:08 WG1799444 Dimethyl phthalate ND 3.00 1 01/10/2022 18:08 WG1799444 Di-n-octyl phthalate ND 3.00 1 01/10/2022 18:08 WG1799444 Pyrene ND 1.00 1 01/10/2022 18:08 WG1799444 1,2,4-Trichlorobenzene ND 10.0 1 01/10/2022 18:08 WG1799444 4-Chloro-3-methylphenol ND 10.0 1 01/10/2022 18:08 WG1799444 2-Chlorophenol ND 10.0 1 01/10/2022 18:08 WG1799444 2,4-Dichlorophenol ND 10.0 1 01/10/2022 18:08 WG1799444 2,4-Dimethylphenol ND 10.0 1 01/10/2022 18:08 WG1799444 4,6-Dinitro-2-methylphenol ND 10.0 1 01/10/2022 18:08 WG1799444 2,4-Dinitrophenol ND 10.0 1 01/10/2022 18:08 WG1799444 2-Nitrophenol ND 10.0 1 01/10/2022 18:08 WG1799444 4-Nitrophenol ND 10.0 1 01/10/2022 18:08 WG1799444 Pentachlorophenol ND 10.0 1 01/10/2022 18:08 WG1799444 Phenol ND 10.0 1 01/10/2022 18:08 WG1799444 2,4,6-Trichlorophenol ND 10.0 1 01/10/2022 18:08 WG1799444 (S) 2-Fluorophenol 34.6 10.0-120 01/10/2022 18:08 WG1799444 (S) Phenol-d5 22.1 8.00-424 01/10/2022 18:08 WG1799444 (S) Nitrobenzene-d5 58.7 15.0-314 01/10/2022 18:08 WG1799444 (S) 2-Fluorobiphenyl 68.4 22.0-127 01/10/2022 18:08 WG1799444 (S) 2,4,6-Tribromophenol 67.5 10.0-153 01/10/2022 18:08 WG1799444 (S) p-Terphenyl-d14 83.7 29.0-141 01/10/2022 18:08 WG1799444 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 - TENTATIVELY IDENTIFIED COMPOUNDS Result Qualifier RDL Dilution Analysis Batch CAS #RT Analyte ug/l ug/l date / time Number of TICs found: 0 Tentatively Identified compounds (TIC) refers to substances not present in the list of target compounds. Therefore, not all TICs are identified and quantitated using individual standards. TIC listings are prepared utilizing a computerized library search routine of electron impact mass spectral data and evaluation of the relevant data by a mass spectral data specialist. Quantitation is accomplished by relative peak area of the TIC compared to that of the nearest internal standard from the total ion chromatogram. TICs are identified and quantitated only if the peak area is 10% or more of that of the nearest internal standard. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 8 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 8 of 23 SAMPLE RESULTS - 03 L1448734 MW-3 Collected date/time: 01/05/22 14:00 Volatile Petroleum Hydrocarbons by Method MADEPV Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Unadjusted C5-C8 Aliphatics ND 100 1 01/13/2022 19:44 WG1801473 Unadjusted C9-C12 Aliphatics ND 100 1 01/13/2022 19:44 WG1801473 Unadjusted C9-C10 Aromatics ND 100 1 01/13/2022 19:44 WG1801473 Total VPH ND 100 1 01/13/2022 19:44 WG1801473 (S) 2,5-Dibromotoluene(FID)88.1 70.0-130 01/13/2022 19:44 WG1801473 (S) 2,5-Dibromotoluene(PID)84.2 70.0-130 01/13/2022 19:44 WG1801473 Volatile Organic Compounds (GC/MS) by Method 602MS Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 01/10/2022 01:28 WG1799550 Toluene ND 1.00 1 01/10/2022 01:28 WG1799550 Ethylbenzene ND 1.00 1 01/10/2022 01:28 WG1799550 Total Xylenes ND 3.00 1 01/10/2022 01:28 WG1799550 Methyl tert-butyl ether ND 1.00 1 01/10/2022 01:28 WG1799550 Di-isopropyl ether ND 1.00 1 01/10/2022 01:28 WG1799550 (S) Toluene-d8 110 80.0-120 01/10/2022 01:28 WG1799550 (S) 4-Bromofluorobenzene 105 77.0-126 01/10/2022 01:28 WG1799550 (S) 1,2-Dichloroethane-d4 89.9 70.0-130 01/10/2022 01:28 WG1799550 TPH by Method MADEPE Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Unadjusted C9-C18 Aliphatics ND 100 1 01/11/2022 19:58 WG1800086 Unadjusted C19-C36 Aliphatics ND 100 1 01/11/2022 19:58 WG1800086 Unadjusted C11-C22 Aromatics ND 100 1 01/11/2022 20:20 WG1800086 Unadjusted Total Petroleum Hydrocarbons ND 100 1 01/11/2022 19:58 WG1800086 (S) o-Terphenyl 76.3 40.0-140 01/11/2022 20:20 WG1800086 (S) 1-Chloro-octadecane 57.9 40.0-140 01/11/2022 19:58 WG1800086 (S) 2-Fluorobiphenyl 84.2 40.0-140 01/11/2022 20:20 WG1800086 (S) 2-Bromonaphthalene 85.7 40.0-140 01/11/2022 20:20 WG1800086 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Acenaphthene ND 1.00 1 01/10/2022 18:29 WG1799444 Acenaphthylene ND 1.00 1 01/10/2022 18:29 WG1799444 Anthracene ND 1.00 1 01/10/2022 18:29 WG1799444 Benzidine ND 10.0 1 01/10/2022 18:29 WG1799444 Benzo(a)anthracene ND 1.00 1 01/10/2022 18:29 WG1799444 Benzo(b)fluoranthene ND 1.00 1 01/10/2022 18:29 WG1799444 Benzo(k)fluoranthene ND 1.00 1 01/10/2022 18:29 WG1799444 Benzo(g,h,i)perylene ND 1.00 1 01/10/2022 18:29 WG1799444 Benzo(a)pyrene ND 1.00 1 01/10/2022 18:29 WG1799444 Bis(2-chlorethoxy)methane ND 10.0 1 01/10/2022 18:29 WG1799444 Bis(2-chloroethyl)ether ND 10.0 1 01/10/2022 18:29 WG1799444 2,2-Oxybis(1-Chloropropane)ND 10.0 1 01/10/2022 18:29 WG1799444 4-Bromophenyl-phenylether ND 10.0 1 01/10/2022 18:29 WG1799444 2-Chloronaphthalene ND 1.00 1 01/10/2022 18:29 WG1799444 4-Chlorophenyl-phenylether ND 10.0 1 01/10/2022 18:29 WG1799444 Chrysene ND 1.00 1 01/10/2022 18:29 WG1799444 Dibenz(a,h)anthracene ND 1.00 1 01/10/2022 18:29 WG1799444 3,3-Dichlorobenzidine ND 10.0 1 01/10/2022 18:29 WG1799444 2,4-Dinitrotoluene ND 10.0 1 01/10/2022 18:29 WG1799444 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 9 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 9 of 23 SAMPLE RESULTS - 03 L1448734 MW-3 Collected date/time: 01/05/22 14:00 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time 2,6-Dinitrotoluene ND 10.0 1 01/10/2022 18:29 WG1799444 Fluoranthene ND 1.00 1 01/10/2022 18:29 WG1799444 Fluorene ND 1.00 1 01/10/2022 18:29 WG1799444 Hexachlorobenzene ND 1.00 1 01/10/2022 18:29 WG1799444 Hexachloro-1,3-butadiene ND 10.0 1 01/10/2022 18:29 WG1799444 Hexachlorocyclopentadiene ND 10.0 1 01/10/2022 18:29 WG1799444 Hexachloroethane ND 10.0 1 01/10/2022 18:29 WG1799444 Indeno(1,2,3-cd)pyrene ND 1.00 1 01/10/2022 18:29 WG1799444 Isophorone ND 10.0 1 01/10/2022 18:29 WG1799444 Naphthalene ND 1.00 1 01/10/2022 18:29 WG1799444 Nitrobenzene ND 10.0 1 01/10/2022 18:29 WG1799444 n-Nitrosodimethylamine ND 10.0 1 01/10/2022 18:29 WG1799444 n-Nitrosodiphenylamine ND 10.0 1 01/10/2022 18:29 WG1799444 n-Nitrosodi-n-propylamine ND 10.0 1 01/10/2022 18:29 WG1799444 Phenanthrene ND 1.00 1 01/10/2022 18:29 WG1799444 Benzylbutyl phthalate ND 3.00 1 01/10/2022 18:29 WG1799444 Bis(2-ethylhexyl)phthalate ND 3.00 1 01/10/2022 18:29 WG1799444 Di-n-butyl phthalate ND 3.00 1 01/10/2022 18:29 WG1799444 Diethyl phthalate ND 3.00 1 01/10/2022 18:29 WG1799444 Dimethyl phthalate ND 3.00 1 01/10/2022 18:29 WG1799444 Di-n-octyl phthalate ND 3.00 1 01/10/2022 18:29 WG1799444 Pyrene ND 1.00 1 01/10/2022 18:29 WG1799444 1,2,4-Trichlorobenzene ND 10.0 1 01/10/2022 18:29 WG1799444 4-Chloro-3-methylphenol ND 10.0 1 01/10/2022 18:29 WG1799444 2-Chlorophenol ND 10.0 1 01/10/2022 18:29 WG1799444 2,4-Dichlorophenol ND 10.0 1 01/10/2022 18:29 WG1799444 2,4-Dimethylphenol ND 10.0 1 01/10/2022 18:29 WG1799444 4,6-Dinitro-2-methylphenol ND 10.0 1 01/10/2022 18:29 WG1799444 2,4-Dinitrophenol ND 10.0 1 01/10/2022 18:29 WG1799444 2-Nitrophenol ND 10.0 1 01/10/2022 18:29 WG1799444 4-Nitrophenol ND 10.0 1 01/10/2022 18:29 WG1799444 Pentachlorophenol ND 10.0 1 01/10/2022 18:29 WG1799444 Phenol ND 10.0 1 01/10/2022 18:29 WG1799444 2,4,6-Trichlorophenol ND 10.0 1 01/10/2022 18:29 WG1799444 (S) 2-Fluorophenol 33.9 10.0-120 01/10/2022 18:29 WG1799444 (S) Phenol-d5 22.2 8.00-424 01/10/2022 18:29 WG1799444 (S) Nitrobenzene-d5 53.9 15.0-314 01/10/2022 18:29 WG1799444 (S) 2-Fluorobiphenyl 61.9 22.0-127 01/10/2022 18:29 WG1799444 (S) 2,4,6-Tribromophenol 59.5 10.0-153 01/10/2022 18:29 WG1799444 (S) p-Terphenyl-d14 82.1 29.0-141 01/10/2022 18:29 WG1799444 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 - TENTATIVELY IDENTIFIED COMPOUNDS Result Qualifier RDL Dilution Analysis Batch CAS #RT Analyte ug/l ug/l date / time Number of TICs found: 0 Tentatively Identified compounds (TIC) refers to substances not present in the list of target compounds. Therefore, not all TICs are identified and quantitated using individual standards. TIC listings are prepared utilizing a computerized library search routine of electron impact mass spectral data and evaluation of the relevant data by a mass spectral data specialist. Quantitation is accomplished by relative peak area of the TIC compared to that of the nearest internal standard from the total ion chromatogram. TICs are identified and quantitated only if the peak area is 10% or more of that of the nearest internal standard. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 10 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 10 of 23 SAMPLE RESULTS - 04 L1448734 MW-4 Collected date/time: 01/05/22 16:00 Volatile Organic Compounds (GC/MS) by Method 602MS Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 01/10/2022 01:49 WG1799550 Toluene ND 1.00 1 01/10/2022 01:49 WG1799550 Ethylbenzene ND 1.00 1 01/10/2022 01:49 WG1799550 Total Xylenes ND 3.00 1 01/10/2022 01:49 WG1799550 Methyl tert-butyl ether ND 1.00 1 01/10/2022 01:49 WG1799550 Di-isopropyl ether ND 1.00 1 01/10/2022 01:49 WG1799550 (S) Toluene-d8 108 80.0-120 01/10/2022 01:49 WG1799550 (S) 4-Bromofluorobenzene 107 77.0-126 01/10/2022 01:49 WG1799550 (S) 1,2-Dichloroethane-d4 90.6 70.0-130 01/10/2022 01:49 WG1799550 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Acenaphthene ND 1.00 1 01/10/2022 18:50 WG1799444 Acenaphthylene ND 1.00 1 01/10/2022 18:50 WG1799444 Anthracene ND 1.00 1 01/10/2022 18:50 WG1799444 Benzidine ND 10.0 1 01/10/2022 18:50 WG1799444 Benzo(a)anthracene ND 1.00 1 01/10/2022 18:50 WG1799444 Benzo(b)fluoranthene ND 1.00 1 01/10/2022 18:50 WG1799444 Benzo(k)fluoranthene ND 1.00 1 01/10/2022 18:50 WG1799444 Benzo(g,h,i)perylene ND 1.00 1 01/10/2022 18:50 WG1799444 Benzo(a)pyrene ND 1.00 1 01/10/2022 18:50 WG1799444 Bis(2-chlorethoxy)methane ND 10.0 1 01/10/2022 18:50 WG1799444 Bis(2-chloroethyl)ether ND 10.0 1 01/10/2022 18:50 WG1799444 2,2-Oxybis(1-Chloropropane)ND 10.0 1 01/10/2022 18:50 WG1799444 4-Bromophenyl-phenylether ND 10.0 1 01/10/2022 18:50 WG1799444 2-Chloronaphthalene ND 1.00 1 01/10/2022 18:50 WG1799444 4-Chlorophenyl-phenylether ND 10.0 1 01/10/2022 18:50 WG1799444 Chrysene ND 1.00 1 01/10/2022 18:50 WG1799444 Dibenz(a,h)anthracene ND 1.00 1 01/10/2022 18:50 WG1799444 3,3-Dichlorobenzidine ND 10.0 1 01/10/2022 18:50 WG1799444 2,4-Dinitrotoluene ND 10.0 1 01/10/2022 18:50 WG1799444 2,6-Dinitrotoluene ND 10.0 1 01/10/2022 18:50 WG1799444 Fluoranthene ND 1.00 1 01/10/2022 18:50 WG1799444 Fluorene ND 1.00 1 01/10/2022 18:50 WG1799444 Hexachlorobenzene ND 1.00 1 01/10/2022 18:50 WG1799444 Hexachloro-1,3-butadiene ND 10.0 1 01/10/2022 18:50 WG1799444 Hexachlorocyclopentadiene ND 10.0 1 01/10/2022 18:50 WG1799444 Hexachloroethane ND 10.0 1 01/10/2022 18:50 WG1799444 Indeno(1,2,3-cd)pyrene ND 1.00 1 01/10/2022 18:50 WG1799444 Isophorone ND 10.0 1 01/10/2022 18:50 WG1799444 Naphthalene ND 1.00 1 01/10/2022 18:50 WG1799444 Nitrobenzene ND 10.0 1 01/10/2022 18:50 WG1799444 n-Nitrosodimethylamine ND 10.0 1 01/10/2022 18:50 WG1799444 n-Nitrosodiphenylamine ND 10.0 1 01/10/2022 18:50 WG1799444 n-Nitrosodi-n-propylamine ND 10.0 1 01/10/2022 18:50 WG1799444 Phenanthrene ND 1.00 1 01/10/2022 18:50 WG1799444 Benzylbutyl phthalate ND 3.00 1 01/10/2022 18:50 WG1799444 Bis(2-ethylhexyl)phthalate ND 3.00 1 01/10/2022 18:50 WG1799444 Di-n-butyl phthalate ND 3.00 1 01/10/2022 18:50 WG1799444 Diethyl phthalate ND 3.00 1 01/10/2022 18:50 WG1799444 Dimethyl phthalate ND 3.00 1 01/10/2022 18:50 WG1799444 Di-n-octyl phthalate ND 3.00 1 01/10/2022 18:50 WG1799444 Pyrene ND 1.00 1 01/10/2022 18:50 WG1799444 1,2,4-Trichlorobenzene ND 10.0 1 01/10/2022 18:50 WG1799444 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 11 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 11 of 23 SAMPLE RESULTS - 04 L1448734 MW-4 Collected date/time: 01/05/22 16:00 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time 4-Chloro-3-methylphenol ND 10.0 1 01/10/2022 18:50 WG1799444 2-Chlorophenol ND 10.0 1 01/10/2022 18:50 WG1799444 2,4-Dichlorophenol ND 10.0 1 01/10/2022 18:50 WG1799444 2,4-Dimethylphenol ND 10.0 1 01/10/2022 18:50 WG1799444 4,6-Dinitro-2-methylphenol ND 10.0 1 01/10/2022 18:50 WG1799444 2,4-Dinitrophenol ND 10.0 1 01/10/2022 18:50 WG1799444 2-Nitrophenol ND 10.0 1 01/10/2022 18:50 WG1799444 4-Nitrophenol ND 10.0 1 01/10/2022 18:50 WG1799444 Pentachlorophenol ND 10.0 1 01/10/2022 18:50 WG1799444 Phenol ND 10.0 1 01/10/2022 18:50 WG1799444 2,4,6-Trichlorophenol ND 10.0 1 01/10/2022 18:50 WG1799444 (S) 2-Fluorophenol 37.7 10.0-120 01/10/2022 18:50 WG1799444 (S) Phenol-d5 23.2 8.00-424 01/10/2022 18:50 WG1799444 (S) Nitrobenzene-d5 59.6 15.0-314 01/10/2022 18:50 WG1799444 (S) 2-Fluorobiphenyl 70.0 22.0-127 01/10/2022 18:50 WG1799444 (S) 2,4,6-Tribromophenol 70.5 10.0-153 01/10/2022 18:50 WG1799444 (S) p-Terphenyl-d14 89.7 29.0-141 01/10/2022 18:50 WG1799444 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 - TENTATIVELY IDENTIFIED COMPOUNDS Result Qualifier RDL Dilution Analysis Batch CAS #RT Analyte ug/l ug/l date / time Number of TICs found: 0 Tentatively Identified compounds (TIC) refers to substances not present in the list of target compounds. Therefore, not all TICs are identified and quantitated using individual standards. TIC listings are prepared utilizing a computerized library search routine of electron impact mass spectral data and evaluation of the relevant data by a mass spectral data specialist. Quantitation is accomplished by relative peak area of the TIC compared to that of the nearest internal standard from the total ion chromatogram. TICs are identified and quantitated only if the peak area is 10% or more of that of the nearest internal standard. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 12 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 12 of 23 SAMPLE RESULTS - 05 L1448734 TRIP BLANK Collected date/time: 01/05/22 00:00 Volatile Organic Compounds (GC/MS) by Method 602MS Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 01/10/2022 00:24 WG1799550 Toluene ND 1.00 1 01/10/2022 00:24 WG1799550 Ethylbenzene ND 1.00 1 01/10/2022 00:24 WG1799550 Total Xylenes ND 3.00 1 01/10/2022 00:24 WG1799550 Methyl tert-butyl ether ND 1.00 1 01/10/2022 00:24 WG1799550 Di-isopropyl ether ND 1.00 1 01/10/2022 00:24 WG1799550 (S) Toluene-d8 108 80.0-120 01/10/2022 00:24 WG1799550 (S) 4-Bromofluorobenzene 104 77.0-126 01/10/2022 00:24 WG1799550 (S) 1,2-Dichloroethane-d4 87.1 70.0-130 01/10/2022 00:24 WG1799550 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 13 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 13 of 23 QUALITY CONTROL SUMMARYWG1801473 Volatile Petroleum Hydrocarbons by Method MADEPV L1448734-02,03 Method Blank (MB) (MB) R3749877-3 01/13/22 15:21 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Unadjusted C5-C8 Aliphatics U 33.3 100 Unadjusted C9-C12 Aliphatics U 33.3 100 Unadjusted C9-C10 Aromatics U 33.3 100 Total VPH U 33.3 100 (S) 2,5-Dibromotoluene(FID)89.6 70.0-130 (S) 2,5-Dibromotoluene(PID)85.0 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3749877-1 01/13/22 13:09 • (LCSD) R3749877-2 01/13/22 13:42 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Unadjusted C5-C8 Aliphatics 1200 1030 1050 85.8 87.5 70.0-130 1.92 25 Unadjusted C9-C12 Aliphatics 1400 1430 1430 102 102 70.0-130 0.000 25 Unadjusted C9-C10 Aromatics 200 190 188 95.0 94.0 70.0-130 1.06 25 Total VPH 2800 2650 2670 94.6 95.4 70.0-130 0.752 25 (S) 2,5-Dibromotoluene(FID) 91.1 91.3 70.0-130 (S) 2,5-Dibromotoluene(PID) 86.8 86.4 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 14 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 14 of 23 QUALITY CONTROL SUMMARYWG1799550 Volatile Organic Compounds (GC/MS) by Method 602MS L1448734-01,02,03,04,05 Method Blank (MB) (MB) R3748386-3 01/10/22 00:03 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Benzene U 0.0941 1.00 Di-isopropyl ether U 0.105 1.00 Ethylbenzene U 0.137 1.00 Methyl tert-butyl ether U 0.101 1.00 Toluene U 0.278 1.00 Xylenes, Total U 0.174 3.00 (S) Toluene-d8 108 80.0-120 (S) 4-Bromofluorobenzene 105 77.0-126 (S) 1,2-Dichloroethane-d4 89.8 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3748386-1 01/09/22 22:35 • (LCSD) R3748386-2 01/09/22 22:57 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Benzene 5.00 4.74 4.73 94.8 94.6 70.0-123 0.211 20 Di-isopropyl ether 5.00 4.75 4.86 95.0 97.2 58.0-138 2.29 20 Ethylbenzene 5.00 5.18 5.14 104 103 79.0-123 0.775 20 Methyl tert-butyl ether 5.00 4.73 4.90 94.6 98.0 68.0-125 3.53 20 Toluene 5.00 5.07 4.96 101 99.2 79.0-120 2.19 20 Xylenes, Total 15.0 15.7 15.6 105 104 79.0-123 0.639 20 (S) Toluene-d8 106 106 80.0-120 (S) 4-Bromofluorobenzene 104 105 77.0-126 (S) 1,2-Dichloroethane-d4 89.1 91.0 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 15 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 15 of 23 QUALITY CONTROL SUMMARYWG1800086 TPH by Method MADEPE L1448734-02,03 Method Blank (MB) (MB) R3749065-1 01/11/22 14:41 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Unadjusted C9-C18 Aliphatics U 33.3 100 Unadjusted C19-C36 Aliphatics U 33.3 100 (S) 1-Chloro-octadecane 91.3 40.0-140 Method Blank (MB) (MB) R3749065-4 01/11/22 15:47 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Unadjusted C11-C22 Aromatics U 33.3 100 (S) o-Terphenyl 80.5 40.0-140 (S) 2-Fluorobiphenyl 84.6 40.0-140 (S) 2-Bromonaphthalene 85.8 40.0-140 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3749065-2 01/11/22 15:03 • (LCSD) R3749065-3 01/11/22 15:25 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Unadjusted C9-C18 Aliphatics 600 335 346 55.8 57.7 40.0-140 3.23 25 Unadjusted C19-C36 Aliphatics 800 722 745 90.3 93.1 40.0-140 3.14 25 (S) 1-Chloro-octadecane 93.3 96.1 40.0-140 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3749065-5 01/11/22 16:09 • (LCSD) R3749065-6 01/11/22 16:31 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Unadjusted C11-C22 Aromatics 1700 1430 1480 84.1 87.1 40.0-140 3.44 25 (S) o-Terphenyl 82.0 84.5 40.0-140 (S) 2-Fluorobiphenyl 89.1 87.1 40.0-140 (S) 2-Bromonaphthalene 90.8 89.3 40.0-140 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 16 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 16 of 23 QUALITY CONTROL SUMMARYWG1799444 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 L1448734-01,02,03,04 Method Blank (MB) (MB) R3748840-3 01/10/22 17:25 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acenaphthene U 0.0886 1.00 Acenaphthylene U 0.0921 1.00 Anthracene U 0.0804 1.00 Benzidine U 3.74 10.0 Benzo(a)anthracene U 0.199 1.00 Benzo(b)fluoranthene U 0.130 1.00 Benzo(k)fluoranthene U 0.120 1.00 Benzo(g,h,i)perylene U 0.121 1.00 Benzo(a)pyrene U 0.0381 1.00 Bis(2-chlorethoxy)methane U 0.116 10.0 Bis(2-chloroethyl)ether U 0.137 10.0 2,2-Oxybis(1-Chloropropane)U 0.210 10.0 4-Bromophenyl-phenylether U 0.0877 10.0 2-Chloronaphthalene U 0.0648 1.00 4-Chlorophenyl-phenylether U 0.0926 10.0 Chrysene U 0.130 1.00 Dibenz(a,h)anthracene U 0.0644 1.00 3,3-Dichlorobenzidine U 0.212 10.0 2,4-Dinitrotoluene U 0.0983 10.0 2,6-Dinitrotoluene U 0.250 10.0 Fluoranthene U 0.102 1.00 Fluorene U 0.0844 1.00 Hexachlorobenzene U 0.0755 1.00 Hexachloro-1,3-butadiene U 0.0968 10.0 Hexachlorocyclopentadiene U 0.0598 10.0 Hexachloroethane U 0.127 10.0 Indeno(1,2,3-cd)pyrene U 0.279 1.00 Isophorone U 0.143 10.0 Naphthalene U 0.159 1.00 Nitrobenzene U 0.297 10.0 n-Nitrosodimethylamine U 0.998 10.0 n-Nitrosodiphenylamine U 2.37 10.0 n-Nitrosodi-n-propylamine U 0.261 10.0 Phenanthrene U 0.112 1.00 Benzylbutyl phthalate U 0.765 3.00 Bis(2-ethylhexyl)phthalate U 0.895 3.00 Di-n-butyl phthalate U 0.453 3.00 Diethyl phthalate U 0.287 3.00 Dimethyl phthalate U 0.260 3.00 Di-n-octyl phthalate U 0.932 3.00 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 17 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 17 of 23 QUALITY CONTROL SUMMARYWG1799444 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 L1448734-01,02,03,04 Method Blank (MB) (MB) R3748840-3 01/10/22 17:25 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Pyrene U 0.107 1.00 1,2,4-Trichlorobenzene U 0.0698 10.0 4-Chloro-3-methylphenol U 0.131 10.0 2-Chlorophenol U 0.133 10.0 2,4-Dichlorophenol U 0.102 10.0 2,4-Dimethylphenol U 0.0636 10.0 4,6-Dinitro-2-methylphenol U 1.12 10.0 2,4-Dinitrophenol U 5.93 10.0 2-Nitrophenol U 0.117 10.0 4-Nitrophenol U 0.143 10.0 Pentachlorophenol U 0.313 10.0 Phenol U 4.33 10.0 2,4,6-Trichlorophenol U 0.100 10.0 (S) Nitrobenzene-d5 62.0 15.0-314 (S) 2-Fluorobiphenyl 70.0 22.0-127 (S) p-Terphenyl-d14 89.9 29.0-141 (S) Phenol-d5 26.7 8.00-424 (S) 2-Fluorophenol 42.8 10.0-120 (S) 2,4,6-Tribromophenol 73.5 10.0-153 Method Blank (MB) - TENTATIVELY IDENTIFIED COMPOUNDS (MB) R3748840-3 01/10/22 17:25 MB Result MB Qualifier MB MDL MB RDL CAS # Analyte ug/l ug/l ug/l Number of TICs found: 0 Tentatively Identified compounds (TIC) refers to substances not present in the list of target compounds. Therefore, not all TICs are identified and quantitated using individual standards. TIC listings are prepared utilizing a computerized library search routine of electron impact mass spectral data and evaluation of the relevant data by a mass spectral data specialist. Quantitation is accomplished by relative peak area of the TIC compared to that of the nearest internal standard from the total ion chromatogram. TICs are identified and quantitated only if the peak area is 10% or more of that of the nearest internal standard. Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3748840-1 01/10/22 16:43 • (LCSD) R3748840-2 01/10/22 17:04 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Acenaphthene 50.0 35.1 34.4 70.2 68.8 47.0-145 2.01 48 Acenaphthylene 50.0 36.9 36.5 73.8 73.0 33.0-145 1.09 74 Anthracene 50.0 38.8 39.7 77.6 79.4 27.0-133 2.29 66 Benzidine 100 35.3 49.8 35.3 49.8 1.00-120 34.1 36 Benzo(a)anthracene 50.0 45.2 45.2 90.4 90.4 33.0-143 0.000 53 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 18 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 18 of 23 QUALITY CONTROL SUMMARYWG1799444 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 L1448734-01,02,03,04 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3748840-1 01/10/22 16:43 • (LCSD) R3748840-2 01/10/22 17:04 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Benzo(b)fluoranthene 50.0 44.0 42.0 88.0 84.0 24.0-159 4.65 71 Benzo(k)fluoranthene 50.0 42.9 43.0 85.8 86.0 11.0-162 0.233 63 Benzo(g,h,i)perylene 50.0 39.9 39.3 79.8 78.6 1.00-219 1.52 97 Benzo(a)pyrene 50.0 43.5 42.7 87.0 85.4 17.0-163 1.86 72 Bis(2-chlorethoxy)methane 50.0 31.6 31.5 63.2 63.0 1.00-219 0.317 54 Bis(2-chloroethyl)ether 50.0 32.2 33.1 64.4 66.2 33.0-185 2.76 108 2,2-Oxybis(1-Chloropropane)50.0 30.2 31.9 60.4 63.8 36.0-166 5.48 76 4-Bromophenyl-phenylether 50.0 40.2 39.7 80.4 79.4 53.0-127 1.25 43 2-Chloronaphthalene 50.0 33.3 33.7 66.6 67.4 60.0-120 1.19 24 4-Chlorophenyl-phenylether 50.0 36.9 36.7 73.8 73.4 25.0-158 0.543 61 Chrysene 50.0 39.6 39.6 79.2 79.2 17.0-168 0.000 87 Dibenz(a,h)anthracene 50.0 40.4 40.0 80.8 80.0 1.00-227 0.995 126 3,3-Dichlorobenzidine 100 81.1 83.6 81.1 83.6 1.00-262 3.04 108 2,4-Dinitrotoluene 50.0 42.9 42.1 85.8 84.2 39.0-139 1.88 42 2,6-Dinitrotoluene 50.0 40.2 39.8 80.4 79.6 50.0-158 1.00 48 Fluoranthene 50.0 38.4 38.2 76.8 76.4 26.0-137 0.522 66 Fluorene 50.0 37.1 36.4 74.2 72.8 59.0-121 1.90 38 Hexachlorobenzene 50.0 38.7 38.5 77.4 77.0 1.00-152 0.518 55 Hexachloro-1,3-butadiene 50.0 29.1 29.8 58.2 59.6 24.0-120 2.38 62 Hexachlorocyclopentadiene 50.0 25.4 26.8 50.8 53.6 10.0-120 5.36 31 Hexachloroethane 50.0 31.9 33.9 63.8 67.8 40.0-120 6.08 52 Indeno(1,2,3-cd)pyrene 50.0 40.3 39.1 80.6 78.2 1.00-171 3.02 99 Isophorone 50.0 34.0 34.3 68.0 68.6 21.0-196 0.878 93 Naphthalene 50.0 27.4 28.4 54.8 56.8 21.0-133 3.58 65 Nitrobenzene 50.0 29.7 30.8 59.4 61.6 35.0-180 3.64 62 n-Nitrosodimethylamine 50.0 28.3 29.5 56.6 59.0 10.0-120 4.15 34 n-Nitrosodiphenylamine 50.0 37.4 38.2 74.8 76.4 44.0-120 2.12 21 n-Nitrosodi-n-propylamine 50.0 35.6 37.0 71.2 74.0 1.00-230 3.86 87 Phenanthrene 50.0 37.5 37.1 75.0 74.2 54.0-120 1.07 39 Benzylbutyl phthalate 50.0 50.0 49.1 100 98.2 1.00-152 1.82 60 Bis(2-ethylhexyl)phthalate 50.0 45.2 43.7 90.4 87.4 8.00-158 3.37 82 Di-n-butyl phthalate 50.0 44.4 44.0 88.8 88.0 1.00-120 0.905 47 Diethyl phthalate 50.0 40.6 40.5 81.2 81.0 1.00-120 0.247 100 Dimethyl phthalate 50.0 39.6 39.2 79.2 78.4 1.00-120 1.02 183 Di-n-octyl phthalate 50.0 44.5 42.1 89.0 84.2 4.00-146 5.54 69 Pyrene 50.0 43.6 42.9 87.2 85.8 52.0-120 1.62 49 1,2,4-Trichlorobenzene 50.0 28.8 29.3 57.6 58.6 44.0-142 1.72 50 4-Chloro-3-methylphenol 50.0 32.4 32.0 64.8 64.0 22.0-147 1.24 73 2-Chlorophenol 50.0 30.8 32.0 61.6 64.0 23.0-134 3.82 61 2,4-Dichlorophenol 50.0 31.2 31.8 62.4 63.6 39.0-135 1.90 50 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 19 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 19 of 23 QUALITY CONTROL SUMMARYWG1799444 Semi Volatile Organic Compounds (GC/MS) by Method 625.1 L1448734-01,02,03,04 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3748840-1 01/10/22 16:43 • (LCSD) R3748840-2 01/10/22 17:04 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% 2,4-Dimethylphenol 50.0 31.8 31.9 63.6 63.8 32.0-120 0.314 58 4,6-Dinitro-2-methylphenol 50.0 48.8 49.7 97.6 99.4 1.00-181 1.83 203 2,4-Dinitrophenol 50.0 43.0 42.2 86.0 84.4 1.00-191 1.88 132 2-Nitrophenol 50.0 32.1 32.6 64.2 65.2 29.0-182 1.55 55 4-Nitrophenol 50.0 17.1 16.6 34.2 33.2 1.00-132 2.97 131 Pentachlorophenol 50.0 38.7 37.3 77.4 74.6 14.0-176 3.68 86 Phenol 50.0 14.3 14.9 28.6 29.8 5.00-120 4.11 64 2,4,6-Trichlorophenol 50.0 38.3 39.1 76.6 78.2 37.0-144 2.07 58 (S) Nitrobenzene-d5 50.4 59.0 15.0-314 (S) 2-Fluorobiphenyl 69.8 71.7 22.0-127 (S) p-Terphenyl-d14 89.0 87.1 29.0-141 (S) Phenol-d5 26.7 27.1 8.00-424 (S) 2-Fluorophenol 40.5 43.4 10.0-120 (S) 2,4,6-Tribromophenol 80.5 86.0 10.0-153 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 20 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 20 of 23 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. ND Not detected at the Reporting Limit (or MDL where applicable). RDL Reported Detection Limit. Rec.Recovery. RT Retention Time. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description The remainder of this page intentionally left blank, there are no qualifiers applied to this SDG. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 21 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 21 of 23 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 08:00 22 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.08 L1448734 01/14/22 09:14 22 of 23 ANALYTICAL REPORT January 14, 2022 Wood E&I Solutions Inc. - Asheville, NC Sample Delivery Group:L1448800 Samples Received:01/06/2022 Project Number:6252-16-0231.07 Description:Pisgah Elementary Site:STF INCIDENT 28870 Report To:Rodney Clark 1308-C Patton Avenue Asheville, NC 28806 Entire Report Reviewed By: January 14, 2022 [Preliminary Report] Heather J Wagner Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 07:59 1 of 11 January 14, 2022 Heather J Wagner Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 09:19 1 of 11 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 MW-1 L1448800-01 5 MW-4 L1448800-02 6 Qc: Quality Control Summary 7 Volatile Petroleum Hydrocarbons by Method MADEPV 7 TPH by Method MADEPE 8 Gl: Glossary of Terms 9 Al: Accreditations & Locations 10 Sc: Sample Chain of Custody 11 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 07:59 2 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 09:19 2 of 11 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-1 L1448800-01 GW Rodney Clark 01/05/22 15:00 01/06/22 09:45 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Petroleum Hydrocarbons by Method MADEPV WG1801473 1 01/13/22 18:06 01/13/22 18:06 BMB Mt. Juliet, TN TPH by Method MADEPE WG1800086 1 01/10/22 11:07 01/12/22 01:06 JN Mt. Juliet, TN TPH by Method MADEPE WG1800086 1 01/10/22 11:07 01/12/22 02:56 JN Mt. Juliet, TN Collected by Collected date/time Received date/time MW-4 L1448800-02 GW Rodney Clark 01/05/22 16:00 01/06/22 09:45 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Petroleum Hydrocarbons by Method MADEPV WG1801473 1 01/13/22 18:39 01/13/22 18:39 BMB Mt. Juliet, TN TPH by Method MADEPE WG1800086 1 01/10/22 11:07 01/12/22 01:28 JN Mt. Juliet, TN TPH by Method MADEPE WG1800086 1 01/10/22 11:07 01/12/22 02:34 JN Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 07:59 3 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 09:19 3 of 11 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Heather J Wagner Project Manager 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 07:59 4 of 11 Heather J Wagner Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 09:19 4 of 11 SAMPLE RESULTS - 01 L1448800 MW-1 Collected date/time: 01/05/22 15:00 Volatile Petroleum Hydrocarbons by Method MADEPV Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Unadjusted C5-C8 Aliphatics ND 100 1 01/13/2022 18:06 WG1801473 Unadjusted C9-C12 Aliphatics ND 100 1 01/13/2022 18:06 WG1801473 Unadjusted C9-C10 Aromatics ND 100 1 01/13/2022 18:06 WG1801473 Total VPH ND 100 1 01/13/2022 18:06 WG1801473 (S) 2,5-Dibromotoluene(FID)90.9 70.0-130 01/13/2022 18:06 WG1801473 (S) 2,5-Dibromotoluene(PID)86.5 70.0-130 01/13/2022 18:06 WG1801473 TPH by Method MADEPE Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Unadjusted C9-C18 Aliphatics ND 100 1 01/12/2022 01:06 WG1800086 Unadjusted C19-C36 Aliphatics ND 100 1 01/12/2022 01:06 WG1800086 Unadjusted C11-C22 Aromatics ND 100 1 01/12/2022 02:56 WG1800086 Unadjusted Total Petroleum Hydrocarbons 102 100 1 01/12/2022 02:56 WG1800086 (S) o-Terphenyl 81.5 40.0-140 01/12/2022 02:56 WG1800086 (S) 1-Chloro-octadecane 79.6 40.0-140 01/12/2022 01:06 WG1800086 (S) 2-Fluorobiphenyl 86.5 40.0-140 01/12/2022 02:56 WG1800086 (S) 2-Bromonaphthalene 89.9 40.0-140 01/12/2022 02:56 WG1800086 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 07:59 5 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 09:19 5 of 11 SAMPLE RESULTS - 02 L1448800 MW-4 Collected date/time: 01/05/22 16:00 Volatile Petroleum Hydrocarbons by Method MADEPV Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Unadjusted C5-C8 Aliphatics ND 100 1 01/13/2022 18:39 WG1801473 Unadjusted C9-C12 Aliphatics ND 100 1 01/13/2022 18:39 WG1801473 Unadjusted C9-C10 Aromatics ND 100 1 01/13/2022 18:39 WG1801473 Total VPH ND 100 1 01/13/2022 18:39 WG1801473 (S) 2,5-Dibromotoluene(FID)87.8 70.0-130 01/13/2022 18:39 WG1801473 (S) 2,5-Dibromotoluene(PID)85.7 70.0-130 01/13/2022 18:39 WG1801473 TPH by Method MADEPE Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Unadjusted C9-C18 Aliphatics 102 100 1 01/12/2022 01:28 WG1800086 Unadjusted C19-C36 Aliphatics 110 100 1 01/12/2022 01:28 WG1800086 Unadjusted C11-C22 Aromatics ND 100 1 01/12/2022 02:34 WG1800086 Unadjusted Total Petroleum Hydrocarbons 292 100 1 01/12/2022 02:34 WG1800086 (S) o-Terphenyl 79.3 40.0-140 01/12/2022 02:34 WG1800086 (S) 1-Chloro-octadecane 80.6 40.0-140 01/12/2022 01:28 WG1800086 (S) 2-Fluorobiphenyl 87.0 40.0-140 01/12/2022 02:34 WG1800086 (S) 2-Bromonaphthalene 91.0 40.0-140 01/12/2022 02:34 WG1800086 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 07:59 6 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 09:19 6 of 11 QUALITY CONTROL SUMMARYWG1801473 Volatile Petroleum Hydrocarbons by Method MADEPV L1448800-01,02 Method Blank (MB) (MB) R3749877-3 01/13/22 15:21 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Unadjusted C5-C8 Aliphatics U 33.3 100 Unadjusted C9-C12 Aliphatics U 33.3 100 Unadjusted C9-C10 Aromatics U 33.3 100 Total VPH U 33.3 100 (S) 2,5-Dibromotoluene(FID)89.6 70.0-130 (S) 2,5-Dibromotoluene(PID)85.0 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3749877-1 01/13/22 13:09 • (LCSD) R3749877-2 01/13/22 13:42 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Unadjusted C5-C8 Aliphatics 1200 1030 1050 85.8 87.5 70.0-130 1.92 25 Unadjusted C9-C12 Aliphatics 1400 1430 1430 102 102 70.0-130 0.000 25 Unadjusted C9-C10 Aromatics 200 190 188 95.0 94.0 70.0-130 1.06 25 Total VPH 2800 2650 2670 94.6 95.4 70.0-130 0.752 25 (S) 2,5-Dibromotoluene(FID) 91.1 91.3 70.0-130 (S) 2,5-Dibromotoluene(PID) 86.8 86.4 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 07:59 7 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 09:19 7 of 11 QUALITY CONTROL SUMMARYWG1800086 TPH by Method MADEPE L1448800-01,02 Method Blank (MB) (MB) R3749065-1 01/11/22 14:41 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Unadjusted C9-C18 Aliphatics U 33.3 100 Unadjusted C19-C36 Aliphatics U 33.3 100 (S) 1-Chloro-octadecane 91.3 40.0-140 Method Blank (MB) (MB) R3749065-4 01/11/22 15:47 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Unadjusted C11-C22 Aromatics U 33.3 100 (S) o-Terphenyl 80.5 40.0-140 (S) 2-Fluorobiphenyl 84.6 40.0-140 (S) 2-Bromonaphthalene 85.8 40.0-140 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3749065-2 01/11/22 15:03 • (LCSD) R3749065-3 01/11/22 15:25 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Unadjusted C9-C18 Aliphatics 600 335 346 55.8 57.7 40.0-140 3.23 25 Unadjusted C19-C36 Aliphatics 800 722 745 90.3 93.1 40.0-140 3.14 25 (S) 1-Chloro-octadecane 93.3 96.1 40.0-140 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3749065-5 01/11/22 16:09 • (LCSD) R3749065-6 01/11/22 16:31 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Unadjusted C11-C22 Aromatics 1700 1430 1480 84.1 87.1 40.0-140 3.44 25 (S) o-Terphenyl 82.0 84.5 40.0-140 (S) 2-Fluorobiphenyl 89.1 87.1 40.0-140 (S) 2-Bromonaphthalene 90.8 89.3 40.0-140 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 07:59 8 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 09:19 8 of 11 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. ND Not detected at the Reporting Limit (or MDL where applicable). RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description The remainder of this page intentionally left blank, there are no qualifiers applied to this SDG. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 07:59 9 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 09:19 9 of 11 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 07:59 10 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.07 L1448800 01/14/22 09:19 10 of 11 APPENDIX B FIELD DATA RECORDS REPORT OF WATER QUALITY MONITORING SEPTEMBER 2022 PISGAH ELEMENTARY SCHOOL 1495 PISGAH HIGHWAY CANDLER, NORTH CAROLINA 28715 NCDEQ UST INCIDENT NO. 28870 FACILITY ID 0-004505 PREPARED FOR: BUNCOMBE COUNTY SCHOOLS 175 BINGHAM ROAD ASHEVILLE, NORTH CAROLINA 28806 PREPARED BY: WOOD ENVIRONMENT & INFRASTRUCTURE SOLUTIONS, INC. 1308 PATTON AVENUE ASHEVILLE, NORTH CAROLINA 28806 SEPTEMBER 28, 2022 WOOD PROJECT 6252-16-0231.09 North Carolina Corporate Engineering License No. F-1253; Geology No. C-247 Wood Environment & Infrastructure Solutions, Inc. 1308-C Patton Avenue Asheville, NC 28806 USA T: 828-252-8130 www.woodplc.com September 28, 2022 Mr. Michael Kowaluk Buncombe County Schools 175 Bingham Road Asheville, North Carolina 28806 Subject: Report of Water Quality Monitoring – September 2022 Pisgah Elementary School 1495 Pisgah Highway, Candler, North Carolina NCDEQ UST Incident No. 28870 Wood Project 6252-16-0231.07 Dear Mr. Kowaluk: Wood Environment & Infrastructure Solutions, Inc. (Wood) is pleased to submit this Report of Water Quality Monitoring for the Pisgah Elementary School site located at 1495 Pisgah Highway in Candler, North Carolina. This report was prepared in general accordance with the requirements for a Monitoring Report, as outlined by the North Carolina Department of Environmental Quality (NCDEQ) Division of Waste Management, Underground Storage Tank (UST) Section. If you have any questions concerning this report, please do not hesitate to contact us at (828) 252- 8130. Sincerely, Wood Environment & Infrastructure Solutions, Inc. Rodney M. Clark, L.G. Technical Professional II Matthew E. Wallace, P.E. Principal Engineer Report of Water Quality Monitoring (September 2022) September 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.09 i TABLE OF CONTENTS 1. INTRODUCTION ...................................................................................................................... 1 1.1. Site-Specific Information ............................................................................................................... 1 1.2. Background Information ................................................................................................................ 2 1.3. Site Geology and Hydrogeology ................................................................................................ 5 2. FIELD ACTIVITIES ...................................................................................................................................... 6 3. LABORATORY RESULTS AND DISCUSSION ................................................................................... 7 4. FREE PRODUCT RECOVERY .................................................................................................................. 7 5. CONCLUSIONS AND RECOMMENDATIONS ................................................................................. 8 6. STATEMENTS AND CERTIFICATION .................................................................................................. 9 TABLES 1 Water Supply Wells within 1,500-Foot Radius of Source 2 Monitoring Well Construction Details 3 Historical Groundwater Elevations 4 Summary of Laboratory Analytical Results 5 Historical Analytical Results FIGURES 1 Topographic Site Map 2 Monitoring Well Location Plan APPENDICES A Field Data Records B Laboratory Report and Chain-of-Custody Record Report of Water Quality Monitoring (September 2022) September 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.09 1 1. INTRODUCTION This report documents field activities conducted on September 8, 2022. This incident is for a petroleum release from a regulated underground storage tank system consisting of one 10,000- gallon underground storage tank (UST) utilized to store heating fuel for on-site use at the Pisgah Elementary School, (Facility ID #0-004505) in Candler, North Carolina. The Pisgah Elementary School (site) is located at 1495 Pisgah Highway in Candler, North Carolina. The site is located on the southeast side of Pisgah Highway (NC Highway 151), adjacent to its intersection with State Road 1114 and Curtis Creek Road. The site location is depicted on Figure 1, which is comprised of the World Topographic Map which includes data from United States Geological Survey 7.5 minute topographic quadrangles, and depicts the site location and vicinity with relevant topographic features. A site plan, including monitoring well locations, is depicted on Figure 2, which is based on a 2019 aerial photograph obtained from North Carolina Orthoimagery Program. 1.1. Site-Specific Information The following information is specific to the environmental activities conducted at the site. Site Name: Pisgah Elementary School Facility ID: 0-004505 NCDEQ UST Incident Number: 28870 Geographical Data Point: UST #2 Latitude: N 35 30’ 12.47” Longitude: W -82 43’ 53.32” Site Location Map: Figure 1 Risk Classification: High Facility Address: 1495 Pisgah Highway Candler, North Carolina 28715 Buncombe County Responsible Party: Buncombe County Schools 175 Bingham Road Asheville, North Carolina 28806 (828) 255-5921 Report of Water Quality Monitoring (September 2022) September 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.09 2 Primary Consultant: Wood Environment & Infrastructure Solutions, Inc. 1308 Patton Avenue, Suite C Asheville, North Carolina 28806 (828) 252-8130 Release Source/Quantity: Heating oil was reportedly discharged from a vent line to ground surface due to mechanical malfunction of a day tank pumping system in August 2010. 1.2. Background Information The site contains the Pisgah Elementary School and is currently utilized as an elementary school. The following USTs, owned by Buncombe County Schools, are currently, or have been, associated with the site: Tank No. Volume (gallons) Contents (i.e., gasoline, diesel, kerosene, heating oil, waste oil, etc.) Use (resale, heating building, distribution, farm or residential, etc.) Installation Date Date last used Indicate whether UST has been removed or closed in place Date of permanent closure (if applicable) Was a release detected from this UST system? If yes, give date. 1 10,000 Heating oil Heating building Unknown Closed Closed- in-place 7/19/2007 Yes 4/20/1999 2 10,000 Heating oil Heating building 7/1/2007 In Use N/A N/A Yes 8/11/2010 There have been two separate releases of heating oil at the site. The first release of heating oil, Incident No. 20390 on April 20, 1999, was from product lines associated with UST #1. This UST was adjacent to the exterior wall of a boiler room/basement in the southeast portion of the elementary school, which is located in the same general vicinity as the current release/source area. Following the completion of a Comprehensive Site Assessment and several groundwater monitoring events, the first release reportedly qualified for closure under risk-based standards. The second release of heating oil, Incident No. 28870 on August 11, 2010, was reportedly a discharge from a vent line associated with UST #2 to the ground surface on the southeastern side of the elementary school. A 75-gallon day tank reportedly failed to operate properly thereby allowing Report of Water Quality Monitoring (September 2022) September 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.09 3 heating oil from the 10,000-gallon heating oil storage tank to continue to be pumped to the day tank. This condition resulted in a release of approximately 1,000 to 2,000 gallons of heating oil. The day tank is a 75-gallon staging/pumping device located in the basement to allow delivery of product into the boiler upon demand. Additionally, heating oil had reportedly entered a groundwater removal sump located in the boiler room/basement of the elementary school and was subsequently released to the ground surface at a discharge outfall located approximately 150 feet northeast of the release. Initial abatement actions reportedly included the excavation of apparent fuel oil-impacted soil at the base of the vent line adjacent to the southeastern portion of the building and from the sump discharge area in August 2010 (approximately 40 tons), removal of fuel oil-impacted water and free- phase fuel oil from the sump on three occasions between August 2010 and September 2010 (approximately 1,600 gallons) and installation of an oil/water separator on the sump system in the boiler, which is currently inspected and maintained by Mountain Environmental Group, Inc. Confirmation soil samples were reportedly not collected from the sidewalls of either excavation because apparent soil contamination remained in-situ. A Limited Site Assessment Report (LSA report), dated November 11, 2010, by Mountain Environmental Group, Inc. identified the receptor information relative to the site. The LSA Report indicated 11 water supply wells were identified within 1,500 feet of the source area, which is the basis for the high-risk classification of the site. During the August 2020 groundwater monitoring event, Wood performed an update to the receptor survey by requesting information on active water accounts within 1,500 feet of the source area. Information regarding the water supply wells is provided in Table 1. The LSA identified the boiler room/basement at the school as the only known subsurface structure that could be affected by the release. The LSA report indicated that the accumulation of petroleum vapors had not been identified to date. The closest water supply well to the source area is located on-site approximately 300 feet to the southwest of the source area, but is reportedly disconnected and not abandoned. Curtis Creek flows from west to east and is approximately 315 feet south of the source area. The confluence of Curtis Creek and South Hominy Creek is approximately 550 feet southeast of the site. South Hominy Creek is a tributary of the French Broad River water system/basin. The LSA Report indicated the site was not located in a well- head protection area. Report of Water Quality Monitoring (September 2022) September 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.09 4 The LSA report identified concentrations of petroleum constituents p-iropropyltolulene, naphthalene, 1,2,4-trimethylbenzene, 1-methylnaphthalene, C9-C18 aliphatics and C9-C22 aromatics exceeded the soil-to-water maximum soil contaminant concentration levels (MSCCs) and C9-C22 aromatics exceeded its residential MSCC in the source area. Additionally, the LSA report indicated concentrations of petroleum constituents C9-C18 aliphatics and C9-C22 aromatics exceeded the 15 North Carolina Administrative Code 02L.0202 Groundwater Classifications and Standards (2L Groundwater Standards) in the groundwater sample collected from MW-2 in the vicinity of the sump discharge outfall. A Comprehensive Site Assessment Addendum (CSA Report), dated August 24, 2011, by Mountain Environmental Group indicated the concentration of petroleum constituent naphthalene exceeded the soil-to-groundwater MSCC in a soil sample collected from the source area in the vicinity of MW-4. The CSA Report also indicated petroleum constituents benzene, naphthalene, C9-C18 aliphatics and C9-C22 aromatics were detected at concentrations that exceeded the 2L Groundwater Standards in groundwater samples collected from the source area (MW-1 and MW-4 area), and that free product was detected in MW-4 in July 2011. The CSA report also indicated that the petroleum constituents C9-C18 aliphatics and C9–C22 aromatics were detected at concentrations that exceeded the 2L Groundwater Standards in the groundwater sample collected from MW-2. The CSA Report recommended semi-annually groundwater monitoring of monitoring wells MW-1, MW-2, MW-3 and MW-4 be implemented at the site. Free product skimmer maintenance events were performed at MW-4 from late 2011 to late 2016 and from early 2018 to June 2019. Free product was not observed in MW-4 from late 2016 to early 2018 and skimmer maintenance was not performed during 2017. Free product has not been observed in MW-4 since the July 2019 monitoring event and the skimmer was removed during the August 2020 monitoring event. In response to Wood’s August 2021 Report of Water Quality Monitoring, NCDEQ issued a Notice of Regulatory Requirements (NORR) dated September 7, 2021 which recommended, in an effort to achieve site closure, sampling the on-site wells (MW-1 through MW-4) and analyzing the groundwater samples for volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs) in addition to the previously approved Massachusetts Department of Environmental Report of Water Quality Monitoring (September 2022) September 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.09 5 Protection (MADEP) Extractable Petroleum Hydrocarbons (EPH) and Volatile Petroleum Hydrocarbons (VPH) analysis. Concentrations of VOCs and SVOCs were not detected above the laboratory reporting limits in samples collected from MW-1, MW-2, MW-3 or MW-4 in the January 2020 semi- annual water quality monitoring event. In response to Wood’s January 2022 Report of Water Quality Monitoring, NCDEQ issued a NORR dated March 10, 2022, which concurred with Wood’s recommendation for continued semi-annual monitoring of MW-4 for VPH and EPH according to the MADEP methods. 1.3. Site Geology and Hydrogeology The site is located within the Blue Ridge Physiographic Province. Based on a review of the geologic map, the site is underlain by rocks of the Ashe Metamorphic and Tallulah Falls Formation, which are described as metagraywacke (foliated to massive; interlayered and gradational with mica schist, muscovite-biotite gneiss and rare graphitic schist) and/or muscovite-biotite gneiss (interlayered and gradational with mica schist, minor amphibolite and hornblende gneiss). The bedrock in the Blue Ridge Physiographic Province is a complex crystalline formation that has been faulted and contorted by past tectonic movements. The rock has weathered to residual soils, which form the mantle for the hillsides and hilltops. The typical residual soil profile in areas not disturbed by erosion or human activities consists of silty and/or clayey soils near the surface where weathering is more advanced, underlain by sandy silt and silty sand. There may be colluvial (old land-slide) material on the slopes and alluvial sediments in stream valleys and floodplains. According to the Soil Survey of Buncombe County, soils at the site are described as Udorthents, which include soils in areas where the native soil profile has been disturbed by earthwork or development. According to the USGS Topographic Map, dated 1961, photorevised 1990, the site ranges from approximately 2,240 feet to 2,260 feet above mean sea level. Surface drainage at the site appears to generally flow to the southeast towards Curtis Creek. Curtis Creek flows from west to east and is approximately 315 feet south of the source area. The confluence of Curtis Creek and South Hominy Creek is approximately 550 feet southeast of the site. South Hominy Creek is a tributary of the French Broad River water system/basin. Assuming that the groundwater table generally mirrors the Report of Water Quality Monitoring (September 2022) September 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.09 6 local topography, groundwater beneath the site is expected to generally flow to the southeast towards Curtis Creek. Based on the CSA and LSA Reports referenced above, soils in the source area and in the vicinity of the sump discharge outfall reportedly consist of five to eight feet of silty clay fill material overlying sandy silt native material. 2. FIELD ACTIVITIES Wood conducted groundwater sampling activities at the Site on September 8, 2022. Monitoring wells MW-1 through MW-4 were gauged for depth to water and presence/absence of free product. Free product was not encountered during the September 8, 2022 monitoring event. The depths to water ranged from 5.40 feet below ground surface in MW-2 to 14.15 feet below ground surface in MW-3, and are presented in Table 2 along with well construction details. Monitoring well locations are depicted on Figure 2. Water levels measured in MW-1 through MW-4 are presented along with historical groundwater elevations in Table 3. The groundwater elevations measured during the September 2022 event were generally consistent as compared to the previous events. Following water level measurements, monitoring well MW-4 was purged by removing three volumes of water under static conditions with new, single-use, polyethylene bailers. The purge water from the well was discharged to the ground surface in proximity to the well in a manner that precluded erosion or surface runoff. Field measurements of temperature, specific conductance, and pH of groundwater were recorded. Field data records for the sampling are included in Appendix A. Following purging, a groundwater sample was collected from monitoring well MW-4. The groundwater sample was placed into a laboratory-prepared containers labeled with sampling information, project information and the requested methods of analysis. The groundwater sample was placed in an ice-chilled cooler and delivered under chain-of-custody via overnight delivery to Pace Analytical National Center (a North Carolina-accredited analytical laboratory). The groundwater sample was submitted for laboratory analysis of VPH and EPH according to the MADEP methods (as authorized/specified by NCDEQ). Report of Water Quality Monitoring (September 2022) September 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.09 7 Groundwater potentiometric maps were not drafted based on the uncertainty of the accuracy of top of casing elevations of the monitoring wells at the Site. Based on our review of local surficial topography and available groundwater elevation data, groundwater flow is expected to be to the southeast. 3. LABORATORY RESULTS AND DISCUSSION Laboratory analysis of the groundwater samples reported MADEP EPH petroleum hydrocarbon fractions (C9-C18 aliphatics, C19-C36 aliphatics and C9-C22 aromatics) in the groundwater sample collected from monitoring well MW-4. Concentrations of MADEP VPH petroleum hydrocarbon fractions were not detected above the laboratory reported detection limit in the groundwater sample collected from monitoring well MW-4. Laboratory analytical results are summarized in Table 4. The laboratory analytical report and chain-of-custody record are included in Appendix B. MADEP EPH petroleum hydrocarbon fractions C9-C18 aliphatics and C9-C22 aromatics were detected in the groundwater sample collected from monitoring well MW-4 at concentrations which exceed the 2L Groundwater Standards. A summary of historical groundwater analytical results is presented in Table 5. When compared to the historical results, the September 2022 concentrations of the MADEP EPH petroleum hydrocarbon fractions are the highest concentrations detected since early 2017, but are significantly less, an order of magnitude or more, below the concentrations detected prior to 2017. 4. FREE PRODUCT RECOVERY A sump in the boiler room/basement of the school collects and removes groundwater from the basement, passes the water through an oil/water separator, and discharges to a field located in the northeast portion of the site, in the general vicinity of monitoring well MW-2. Approximately 1,600 gallons of fuel oil-impacted water and/or free-phase fuel oil was removed from the sump on three occasions between August 2010 and September 2010 during initial abatement activities. The occurrence of fuel oil in the sump has diminished with time. The oil water separator is currently maintained and serviced by Mountain Environmental Group, Inc. on a quarterly basis. Report of Water Quality Monitoring (September 2022) September 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.09 8 A passive free product skimmer was installed in monitoring well MW-4 on March 7, 2013. The passive skimmer installed in MW-4 did not contain free product during three consecutive monitoring events in 2019 and 2020. Per NCDEQ’s approval, the free product skimmer was removed from MW-4 in August 2020. Free product was not observed during the September 2022 monitoring event. 5. CONCLUSIONS AND RECOMMENDATIONS Groundwater monitoring results indicate petroleum hydrocarbon fractions C9-C18 aliphatics and C9–C22 aromatics were detected at concentrations that exceed their respective 2L Groundwater Standards. When compared to the historical results, the September 2022 concentrations of the MADEP EPH petroleum hydrocarbon fractions are the highest concentrations detected since early 2017, but are significantly less, an order of magnitude or more, below the concentrations detected prior to 2017. Monitoring well MW-4 contained free product from 2011 to November 2016, and from early 2018 to February 2020. Free product was not observed in monitoring well MW-4 during the September 2022 monitoring event and has not been observed since February 2020. Wood recommends performance of semi-annual groundwater monitoring of MW-4 for MADEP VPH and EPH. The next semi-annual groundwater monitoring event should be conducted in February 2023. Report of Water Quality Monitoring (September 2022) September 28, 2022 Pisgah Elementary School Wood Project 6252-16-0231.09 9 6. STATEMENTS AND CERTIFICATION 1 Enter the date the monitoring report was due. 8/31/2022 Will this report be submitted after the established due date? YES X NO 2 Was any required information from the above template missing from this report?YES NO X IF the answer to question #1 or# 2 is “YES”, please provide additional information in this cell to explain what was missing and why. Delay in scheduling and performing work by several weeks. 3 If applicable, will any of the proposed attenuation milestones under the schedule approved in the Corrective Action Plan not be met? (within a reasonable margin of error) YES NO X IF the answer to question #3 is “NO”, skip to the certification under #8 below. IF the answer to question #3 is “YES”, please generally describe in this cell the possible reason(s) and outline proposed remedies. (This should be described in more detail in the report text above.) 4 Does any known or suspected source zone soil contamination or free product remain outside of the assessed area that could be inhibiting natural attenuation? YES NO X 5 Has there been an unexpected increase in contaminant mass sufficient to suggest a potential new release from a separate onsite or offsite source? YES NO X IF the answer to either question #4 or #5 is “YES”, generally describe in this cell any actions recommended to further assess or clean up this known or suspected source. (This should be described in more detail in the report text above.) TABLES TABLE 1WATER SUPPLY WELLS WITHIN 1,500-FOOT RADIUS OF SOURCEPisgah Elementary School1495 Pisgah HighwayCandler, North CarolinaWood Project 6252-16-0231Well NumberBuncombe County PINWell Owner Property Address Owner AddressActive MunicipalWater AccountComments1 8695-08-6015 Kuykendall, O.L. & Carolyn M.100 Medford Branch Rd.,Candler NC 287153509 Amhurst Dr.,Gastonia NC 28056No Dug well - not in use2 8695-08-6015 Kuykendall, O.L. & Carolyn M.100 Medford Branch Rd.,Candler NC 287163509 Amhurst Dr.,Gastonia NC 28056No Drilled well - used for drinking supply3 8695-08-7837 White Rock Bapt Church91 Medford Branch Rd.,Candler NC 28717776 Upper Glady Fork Rd.,Candler NC 28715No Drilled well - used for drinking supply4 8685-97-6760 Fowler, David J.20 Medford Branch Rd.,Candler NC 2871872 Israel Rd., Candler NC 28715Yes Drilled well - used for drinking supply5 8685-98-5132 Pressley, Carol Jr. & Betty99999 Pisgah HwyCandler NC 287193 Medford Branch Rd.,Candler NC 28715No Dug well - not in use6 8685-97-1941 Loeffler, Benjamine & Rachel Ann1540 Pisgah HwyCandler NC 287201540 Pisgah Hwy Candler NC 28715Yes Drilled well - used for drinking supply7 8685-88-6435 Davis, James Walter & Anita G1512 Pisgah HwyCandler NC 287211512 Pisgah Hwy Candler NC 28715No Drilled well - used for drinking supply8 8685-98-6614 Messer, Bradley Charles & Sarina Shepard1525 Pisgah HwyCandler NC 287221525 Pisgah Hwy Candler NC 28715No Dug well - used for drinking supply9 8685-99-8192 Buncombe County Board Of Education1495 Pisgah HwyCandler NC 28723175 Bingham Rd., Asheville NC 28806Yes Drilled well - not in use10 8685-99-0158 Childs, William Lester & Elizabeth Elaine8 Curtis Creek Rd.,Candler NC 287248 Curtis Creek Rd., Candler NC 28715No Well details not verified11 8685-99-3122 White Rock Bapt Church20 White Rock Church Rd.,Candler NC 28725776 Upper Glady Fork Rd., Candler NC 28715No Well details not verified12 8685-98-0786 Burgess, Shelly & Ryan11 Curtis Creek Rd.,Candler NC 28727385 Farnor Rd., Erwin TN 37650No Well details not verified13 8695-08-6578 The Primitive Quartet Llc1433 Pisgah HwyCandler NC 28728118 Israel Rd., Candler NC 28715No Well details not verifiedN/A 8685-87-5954 Courson, Franklin L.1544 Pisgah HwyCandler NC 287261544 Pisgah Hwy Candler NC 28715No Well details not verified1. Information in Table 1 obtained from Limited Site Assessment Report, dated November 11, 2010, by Mountain Environmental Group, Inc. and from information provided by City of Asheville Water Department dated September 2, 2020Prepared By: RMC 9/28/22Checked by: GLH 9/28/22 TABLE 2MONITORING WELL CONSTRUCTION DETAILSPisgah Elementary School1495 Pisgah HighwayCandler, North Carolina Wood Project 6252-16-0231MW-1 Type II 9/15/2010 99.5611.9287.642"5 - 3030MW-2 Type II 9/21/2010 90.985.4085.582"4 - 1414MW-3 Type II 5/18/2011 98.5714.1584.422"7 - 2727MW-4 Type II 6/6/2011 98.9611.2387.732" 10 - 3030NOTES:1. TOC elevations obtained from Groundwater Monitoring Report, dated October 28, 2015, by Mountain Environmental Group, Inc., which indicates TOC elevation data were estimated with a topographic map and well locations.2. Depths to groundwater were recorded in feet below top of casing elevation on September 8, 2022.3. TOC = Top Of Casing.Prepared by: RMC 9/15/2022Checked by: GLH 9/28/2022Screened Interval (ft) Total Depth (ft)Well Diameter (inches)Well Well TypeDate InstalledTOC Elevation1 (ft)Estimated Groundwater ElevationDepth to Groundwater2 TABLE 3 HISTORICAL GROUNDWATER ELEVATIONS Pisgah Elementary School 1495 Pisgah Highway Candler, North Carolina Wood Project 6252-16-0231 Well ID Date TOC Elevation Depth to Free Product Depth to Water1 Free Product Thickness Groundwater Elevation2 10/1/2010 --12.56 --87.00 7/28/2011 --12.20 --87.36 12/29/2011 --11.49 --88.07 11/8/2012 --13.00 --86.56 6/27/2013 --11.70 --87.86 1/19/2015 --11.99 --87.57 7/30/2015 --13.01 --86.55 1/27/2016 --11.31 --88.25 9/28/2016 --12.87 --86.69 2/22/2016 --12.40 --87.16 7/18/2017 --12.40 --87.16 3/13/2018 --11.81 --87.75 8/24/2018 --11.97 --87.59 2/19/2019 --11.50 --88.06 7/30/2019 --11.64 --87.92 2/19/2020 --11.15 --88.41 8/26/2020 --11.34 --88.22 2/2/2021 --11.82 --87.74 8/16/2021 --12.00 --87.56 1/5/2022 --11.90 --87.66 9/8/2022 --11.92 --87.64 99.56MW-1 Page 1 of 4 TABLE 3 HISTORICAL GROUNDWATER ELEVATIONS Pisgah Elementary School 1495 Pisgah Highway Candler, North Carolina Wood Project 6252-16-0231 Well ID Date TOC Elevation Depth to Free Product Depth to Water1 Free Product Thickness Groundwater Elevation2 10/1/2010 --6.32 --84.66 7/28/2011 --6.67 --84.31 12/29/2011 --5.92 --85.06 6/27/2013 --6.35 --84.63 1/19/2015 --5.78 --85.20 7/30/2015 --7.03 --83.95 1/27/2016 --3.05 --87.93 9/28/2016 --6.02 --84.96 2/22/2016 --6.52 --84.46 7/18/2017 --6.75 --84.23 3/13/2018 --5.80 --85.18 8/24/2018 --7.57 --83.41 2/19/2019 --4.95 --86.03 7/30/2019 --5.73 --85.25 2/19/2020 --5.65 --85.33 2/2/2021 --6.35 --84.63 8/16/2021 --6.43 --84.55 1/5/2022 --5.37 --85.61 9/8/2022 --5.40 --85.58 MW-2 90.98 Page 2 of 4 TABLE 3 HISTORICAL GROUNDWATER ELEVATIONS Pisgah Elementary School 1495 Pisgah Highway Candler, North Carolina Wood Project 6252-16-0231 Well ID Date TOC Elevation Depth to Free Product Depth to Water1 Free Product Thickness Groundwater Elevation2 6/6/2011 --14.80 --83.77 7/28/2011 --14.18 --84.39 12/29/2011 --13.70 --84.87 11/8/2012 --15.32 --83.25 6/27/2013 --14.30 --84.27 1/19/2015 --13.23 --85.34 7/30/2015 --14.69 --83.61 1/27/2016 --13.19 --85.38 9/28/2016 --15.13 --83.44 2/22/2016 --14.95 --83.62 7/18/2017 --15.12 --83.45 3/13/2018 --14.25 --84.32 8/24/2018 --14.67 --83.90 2/19/2019 --13.75 --84.82 7/30/2019 --13.82 --84.75 2/19/2020 --13.10 --85.47 2/2/2021 --14.55 --84.02 8/16/2021 --14.61 --83.96 1/5/2022 --14.44 --84.13 9/8/2022 --14.15 --84.42 MW-3 98.57 Page 3 of 4 TABLE 3 HISTORICAL GROUNDWATER ELEVATIONS Pisgah Elementary School 1495 Pisgah Highway Candler, North Carolina Wood Project 6252-16-0231 Well ID Date TOC Elevation Depth to Free Product Depth to Water1 Free Product Thickness Groundwater Elevation2 6/6/2011 --11.99 --86.97 7/28/2011 11.49 11.52 0.03 87.46 12/29/2011 10.89 10.98 0.09 88.05 11/8/2012 12.26 13.24 0.98 86.50 6/27/2013 1/19/2015 10.87 11.27 0.40 88.01 7/30/2015 11.66 11.67 0.01 87.30 1/27/2016 11.00 11.20 0.25 87.96 9/28/2016 12.93 12.95 0.02 86.01 2/22/2016 --11.95 --87.01 7/18/2017 --12.05 --86.91 3/13/2018 11.73 11.75 0.02 87.23 8/24/2018 11.45 11.47 0.02 87.51 2/19/2019 10.98 11.00 0.02 87.98 7/30/2019 --10.93 --88.03 2/19/2020 --10.53 --88.43 8/26/2020 --10.73 --88.23 2/2/2021 --11.18 --87.78 8/16/2021 --11.31 --87.65 1/5/2022 --11.19 --87.77 9/8/2022 --11.23 --87.73 NOTES:Prepared by: RMC 9/15/2022 1. Reported in feet below top of casing.Checked by: GLH 9/28/2022 2. Measured in feet relative to elevation from topographic map. 3. Groundwater elevations were corrected by subtracting 80% of the free product thickness from the depth to water. 98.96MW-4 no free product when skimmer removed Page 4 of 4 TABLE 4SUMMARY OF LABORATORY ANALYTICAL RESULTS - SEPTEMBER 2022 Pisgah Elementary School1495 Pisgah HighwayCandler, North CarolinaWood Project: 6252-16-0231C5-C8 aliphatics*C9-C18 aliphatics**C9-C22 aromatics C19-C36 aliphaticsGroundwater Standard40070020010,000MW-4<1001,140685572Notes:1. Concentrations reported in micrograms per liter (ug/L).2. <100 - Indicate analyte not detected at or above laboratory reporting limit.3. Groundwater Standard based on 15 North Carolina Administrative Code (NCAC) 02L.0202 Groundwater Classifications and Standards, dated April 1, 2022.4. Bold numbers indicate detected concentration is above the Groundwater Standard.5. MADEP - Massachusets Department of Environmental Protection; VPH - Volatile Petroleum Hydrocarbons; EPH - Extractable Petroleum Hydrocarbons 6. MADEP VPH and EPH Results calculated as indicated in North Carolina Department of Environmental Quality's UST Section's Assessment Guidelines, dated January 19, 2021 - Table 11 Worksheet for calculating MADEP Groundwater Results. (*) Calculated by adding C9-C12 Aliphatics and C9-C18 Aliphatics; (**) Calculated by adding C9-C10 Aromatics and C11-C22 AromaticsPrepared by: RMC 9/27/2022Checked by: GLH 9/28/2022 TABLE 5HISTORICAL ANALYTICAL RESULTSPisgah Elementary School1495 Pisgah HighwayCandler, North Carolina Wood Project: 6252-16-02311 600 600 500 6 300 60 200 5.6 400 700 200 10,00010/1/2010 ND ND ND 2.7 ND ND ND ND ND ND ND ND ND7/28/201111.95.8 2.6 75.712.8ND ND ND ND - 264 190.3 ND12/29/201122.76.0 7.2 116.519.9ND ND ND ND ND1,137 644ND11/8/2012 ND ND ND 1.1 ND ND ND ND ND ND ND ND ND6/27/2013 0.99 ND 1.8 18.3 ND ND ND ND ND ND2,706 1,915ND1/19/2015 ND ND ND 1.1 ND 9.3 8.1 9.1 ND -58,520 64,929 12,4007/30/2015 ND ND ND ND ND ND ND ND 5.6 ND20,721 8,308.24,7601/27/20161.02ND ND 3.56 1.87 ND ND ND ND ND1,359 7834019/28/2016 ND ND ND 3.53 2.40 ND ND ND ND ND735 5312022/22/2017 ND ND ND ND ND ND ND ND ND ND 122 ND ND7/18/2017 ND ND ND ND ND ND ND ND ND ND ND ND ND3/13/2018 ND ND ND ND 2.05 ND ND ND ND ND 3992331408/24/2018 ND ND ND ND 2.03 ND ND ND ND ND 129278ND2/18/2019 ND ND ND ND ND ND ND ND ND NA NA NA NA7/30/2019 ND ND ND ND ND ND ND ND ND NA NA NA NA2/19/2020 ND ND ND ND ND ND ND ND ND NA NA NA NA8/26/2020 NA NA NA NA NA NA NA NA NA ND1,339 4325342/2/2021 NA NA NA NA NA NA NA NA NA ND 156 139 ND8/16/2021 NA NA NA NA NA NA NA NA NA ND 101 ND ND1/5/2022 ND ND ND ND ND ND ND ND ND ND ND ND ND C19-C36 aliphaticsbenzenetolueneethylbenzenexylenesnaphthalenefluorenephenanthrenebis-(2-ethylhexyl) phthalate*C9-C18 aliphaticspyrene**C9-C22 aromaticsGroundwater StandardC5-C8 aliphaticsMW-1Page 1 of 4 TABLE 5HISTORICAL ANALYTICAL RESULTSPisgah Elementary School1495 Pisgah HighwayCandler, North Carolina Wood Project: 6252-16-02311 600 600 500 6 300 60 200 5.6 400 700 200 10,000 C19-C36 aliphaticsbenzenetolueneethylbenzenexylenesnaphthalenefluorenephenanthrenebis-(2-ethylhexyl) phthalate*C9-C18aliphaticspyrene**C9-C22 aromaticsGroundwater StandardC5-C8 aliphatics10/1/2010 ND ND 1.1 34.4 ND ND ND ND ND ND1,230 288ND7/28/2011 ND ND ND ND 3.7 ND ND ND ND - 114 ND ND12/29/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND11/8/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND6/27/2013 ND ND ND ND ND ND ND ND ND ND ND ND ND1/19/2015 ND ND ND ND ND ND ND ND ND - ND ND ND7/30/2015 ND ND ND ND ND ND ND ND ND ND ND ND ND1/27/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND9/28/2016 ND ND ND ND 1.08 ND ND ND ND ND ND ND ND2/22/2017 ND ND ND ND ND ND ND ND ND ND ND ND ND7/18/2017 ND ND ND ND ND ND ND ND ND ND ND ND ND3/13/2018 ND ND ND ND ND ND ND ND ND ND ND ND ND8/24/2018 ND ND ND ND ND ND ND ND ND ND ND ND ND2/18/2019 ND ND ND ND ND ND ND ND ND NA NA NA NA7/30/2019 ND ND ND ND ND ND ND ND ND NA NA NA NA2/19/2020 ND ND ND ND ND ND ND ND ND NA NA NA NA1/5/2022 ND ND ND ND ND ND ND ND ND ND ND ND NDMW-2Page 2 of 4 TABLE 5HISTORICAL ANALYTICAL RESULTSPisgah Elementary School1495 Pisgah HighwayCandler, North Carolina Wood Project: 6252-16-02311 600 600 500 6 300 60 200 5.6 400 700 200 10,000 C19-C36 aliphaticsbenzenetolueneethylbenzenexylenesnaphthalenefluorenephenanthrenebis-(2-ethylhexyl) phthalate*C9-C18aliphaticspyrene**C9-C22 aromaticsGroundwater StandardC5-C8 aliphatics6/6/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND7/28/2011 ND ND ND ND ND ND ND ND ND - ND ND ND12/29/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND11/8/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND6/27/2013 ND ND ND ND ND ND ND ND ND ND ND ND ND1/19/2015 ND ND ND ND ND ND ND ND ND - ND ND ND7/30/2015 ND ND ND ND ND ND ND ND ND ND ND ND ND1/27/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND9/28/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND2/22/2017 ND ND ND ND ND ND ND ND ND ND ND ND ND7/18/2017 ND ND ND ND ND ND ND ND ND ND ND ND ND3/13/2018 ND ND ND ND ND ND ND ND ND ND ND ND ND8/24/2018 ND ND ND ND ND ND ND ND ND ND ND ND ND2/18/2019 ND ND ND ND ND ND ND ND ND NA NA NA NA7/30/2019 ND ND ND ND ND ND ND ND ND NA NA NA NA2/19/2020 ND ND ND ND ND ND ND ND ND NA NA NA NA1/5/2022 ND ND ND ND ND ND ND ND ND ND ND ND NDMW-3Page 3 of 4 TABLE 5HISTORICAL ANALYTICAL RESULTSPisgah Elementary School1495 Pisgah HighwayCandler, North Carolina Wood Project: 6252-16-02311 600 600 500 6 300 60 200 5.6 400 700 200 10,000 C19-C36 aliphaticsbenzenetolueneethylbenzenexylenesnaphthalenefluorenephenanthrenebis-(2-ethylhexyl) phthalate*C9-C18aliphaticspyrene**C9-C22 aromaticsGroundwater StandardC5-C8 aliphatics6/6/20112.512.1 22.5 98.410.8ND ND ND ND ND27,740 10,290ND2/22/2017 ND ND ND ND ND ND ND ND ND ND 4232931487/18/2017 ND ND ND ND ND ND ND ND ND ND 306 156 1027/30/2019 ND ND ND ND ND 1.73 ND 3.02 ND NA NA NA NA2/19/2020 ND ND ND ND ND ND ND ND ND NA NA NA NA8/26/2020 NA NA NA NA NA NA NA NA NA ND1,060 5034852/2/2021 NA NA NA NA NA NA NA NA NA ND 7004272598/16/2021 NA NA NA NA NA NA NA NA NA ND729 3913691/5/2022 ND ND ND ND ND ND ND ND ND ND 102 ND 1109/8/2022 NA NA NA NA NA NA NA NA NA ND1,140 685572NOTES:1. Concentrations reported in micrograms per liter (ug/L).2. ND - Indicate analyte not detected at or above laboratory reporting limit.3. Groundwater Standard based on 15 North Carolina Administrative Code (NCAC) 02L.0202 Groundwater Classifications and Standards, dated April 1, 2022.4.Bold numbers indicate detected concentration is above the Groundwater Standard.5. MADEP - Massachusets Department of Environmental Protection; VPH - Volatile Petroleum Hydrocarbons; EPH - Extractable Petroleum Hydrocarbons6. MADEP VPH and EPH Results calculated as indicated in North Carolina Department of Environmental Quality's UST Section's Assessment Guidelines,dated January 19, 2021 - Table 11 Worksheet for calculating MADEP Groundwater Results.(*) Calculated by adding C9 - C12 Aliphatics and C9-C18 Aliphatics;(**) Calculated by adding C9-C10 Aromatics and C11-C22 Aromatics7. (-) Indicates Wood does not have record of laboratory analytical data from this date.8. NA - Indicates constituent not analyzed.Prepared by: RMC 9/27/2022Checked by: GLH 9/28/2022MW-4Page 4 of 4 FIGURES © OpenStreetMap (and) contributors, CC-BY-SA Sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), swisstopo, © OpenStreetMap contributors, and the GIS User Community Figure No.PREPARED BY: G. HUTCHINS MAP PROJECTION:NC State Plane (NAD83, feet) 4 0 500 1,000 Feet Although every effort has been made to ensure the accuracy of information, errors and conditions originating from the physicalsources used to develop the database may be reflected in the data supplied. The requestor must be aware of data conditions andultimately bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collectionmethodology, currency of data, and other conditions specific to certain data. TITLE: 1 The map shown here has been createdwith all due and reasonable care and isstrictly for use with Wood project6252.16.0231. Wood assumes no liability,direct or indirect, whatsoever or any such third party or unintended use. TOPOGRAPHIC SITE MAP PISGAH ELEMENTARY 1495 PISGAH HIGHWAY CANDLER, NORTH CAROLINA CHECKED BY: M. WALLACE DATE: 3/1/2022 DATE: 3/1/2022 PROJECT NUMBER:6252.16.0231 Document Path: P:\Buncombe County Schools\Pisgah Elementary\GIS\Figure 1 - Topo.mxd Legend SUBJECT PROPERTY SUBJECT PROPERTY CURTIS C R EEK © OpenStreetMap (and) contributors, CC-BY-SA @A @A @A @A MW-1 MW-2 MW-3 MW-4 Figure No.PREPARED BY: G. HUTCHINS MAP PROJECTION:NC State Plane (NAD83, feet) Ê 02550 Feet Although every effort has been made to ensure the accuracy of information, errors and conditions originating from the physicalsources used to develop the database may be reflected in the data supplied. The requestor must be aware of data conditions andultimately bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collectionmethodology, currency of data, and other conditions specific to certain data. TITLE: 2 The map shown here has been createdwith all due and reasonable care and isstrictly for use with Wood project6252.16.0231 Wood assumes no liability,direct or indirect, whatsoever or any such third party or unintended use. MONITORING WELL LOCATION MAP PISGAH ELEMENTARY 1495 PISGAH HIGHWAY CANDLER, NORTH CAROLINA CHECKED BY: M. WALLACE DATE: 3/1/2022 DATE: 3/1/2022 PROJECT NUMBER:6225.16.0231 Document Path: P:\Buncombe County Schools\Pisgah Elementary\GIS\Figure 2 - Site Map.mxd Legend SUBJECT PROPERTY @A MONITORING WELL LOCATION PISGAH HWY ACTIVE FUEL OIL UST MW-1 APPENDIX A FIELD DATA RECORDS APPENDIX B LABORATORY REPORT AND CHAIN-OF-CUSTODY RECORD ANALYTICAL REPORT September 23, 2022 Wood E&I Solutions Inc. - Asheville, NC Sample Delivery Group:L1534260 Samples Received:09/09/2022 Project Number:6252-16-0231.09 Description:Pisgah Elementary Site:STF INCIDENT 28870 Report To:Rodney Clark 1308-C Patton Avenue Asheville, NC 28806 Entire Report Reviewed By: September 23, 2022 [Preliminary Report] Heather J Wagner Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:07 1 of 11 September 23, 2022 Heather J Wagner Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:09 1 of 11 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 MW-4 L1534260-01 5 TRIP BLANK L1534260-02 6 Qc: Quality Control Summary 7 Volatile Petroleum Hydrocarbons by Method MADEPV 7 TPH by Method MADEPE 8 Gl: Glossary of Terms 9 Al: Accreditations & Locations 10 Sc: Sample Chain of Custody 11 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:07 2 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:09 2 of 11 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-4 L1534260-01 GW Rodney M. Clark 09/08/22 10:20 09/09/22 08:45 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Petroleum Hydrocarbons by Method MADEPV WG1927206 1 09/17/22 00:32 09/17/22 00:32 MGF Mt. Juliet, TN TPH by Method MADEPE WG1930132 1 09/21/22 07:44 09/23/22 00:43 JDG Mt. Juliet, TN TPH by Method MADEPE WG1930132 1 09/21/22 07:44 09/23/22 04:38 JDG Mt. Juliet, TN Collected by Collected date/time Received date/time TRIP BLANK L1534260-02 GW Rodney M. Clark 09/08/22 00:00 09/09/22 08:45 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Petroleum Hydrocarbons by Method MADEPV WG1927206 1 09/16/22 17:57 09/16/22 17:57 MGF Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:07 3 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:09 3 of 11 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Heather J Wagner Project Manager Project Narrative NC EPH: C9-C18 aliphatic recovered low in the LCS/LCSD. Insufficient hold time remaining for re-extraction. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:07 4 of 11 Heather J Wagner Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:09 4 of 11 SAMPLE RESULTS - 01 L1534260 MW-4 Collected date/time: 09/08/22 10:20 Volatile Petroleum Hydrocarbons by Method MADEPV Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Unadjusted C5-C8 Aliphatics ND 100 1 09/17/2022 00:32 WG1927206 Unadjusted C9-C12 Aliphatics ND 100 1 09/17/2022 00:32 WG1927206 Unadjusted C9-C10 Aromatics ND 100 1 09/17/2022 00:32 WG1927206 Total VPH ND 100 1 09/17/2022 00:32 WG1927206 (S) 2,5-Dibromotoluene(FID) 96.7 70.0-130 09/17/2022 00:32 WG1927206 (S) 2,5-Dibromotoluene(PID) 93.8 70.0-130 09/17/2022 00:32 WG1927206 TPH by Method MADEPE Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Unadjusted C9-C18 Aliphatics 1140 J4 100 1 09/23/2022 00:43 WG1930132 Unadjusted C19-C36 Aliphatics 572 100 1 09/23/2022 00:43 WG1930132 Unadjusted C11-C22 Aromatics 685 100 1 09/23/2022 04:38 WG1930132 Unadjusted Total Petroleum Hydrocarbons 2400 100 1 09/23/2022 04:38 WG1930132 (S) o-Terphenyl 87.2 40.0-140 09/23/2022 04:38 WG1930132 (S) 1-Chloro-octadecane 69.6 40.0-140 09/23/2022 00:43 WG1930132 (S) 2-Fluorobiphenyl 95.1 40.0-140 09/23/2022 04:38 WG1930132 (S) 2-Bromonaphthalene 93.2 40.0-140 09/23/2022 04:38 WG1930132 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:07 5 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:09 5 of 11 SAMPLE RESULTS - 02 L1534260 TRIP BLANK Collected date/time: 09/08/22 00:00 Volatile Petroleum Hydrocarbons by Method MADEPV Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Unadjusted C5-C8 Aliphatics ND 100 1 09/16/2022 17:57 WG1927206 Unadjusted C9-C12 Aliphatics ND 100 1 09/16/2022 17:57 WG1927206 Unadjusted C9-C10 Aromatics ND 100 1 09/16/2022 17:57 WG1927206 Total VPH ND 100 1 09/16/2022 17:57 WG1927206 (S) 2,5-Dibromotoluene(FID) 93.2 70.0-130 09/16/2022 17:57 WG1927206 (S) 2,5-Dibromotoluene(PID) 89.4 70.0-130 09/16/2022 17:57 WG1927206 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:07 6 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:09 6 of 11 QUALITY CONTROL SUMMARYWG1927206 Volatile Petroleum Hydrocarbons by Method MADEPV L1534260-01,02 Method Blank (MB) (MB) R3839093-3 09/16/22 13:35 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Unadjusted C5-C8 Aliphatics U 33.3 100 Unadjusted C9-C12 Aliphatics U 33.3 100 Unadjusted C9-C10 Aromatics U 33.3 100 Total VPH U 33.3 100 (S) 2,5-Dibromotoluene(FID) 92.6 70.0-130 (S) 2,5-Dibromotoluene(PID) 88.6 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3839093-1 09/16/22 11:23 • (LCSD) R3839093-2 09/16/22 11:56 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Unadjusted C5-C8 Aliphatics 1200 1040 1040 86.7 86.7 70.0-130 0.000 25 Unadjusted C9-C12 Aliphatics 1400 1230 1230 87.9 87.9 70.0-130 0.000 25 Unadjusted C9-C10 Aromatics 200 168 165 84.0 82.5 70.0-130 1.80 25 Total VPH 2800 2440 2440 87.1 87.1 70.0-130 0.000 25 (S) 2,5-Dibromotoluene(FID) 92.2 93.9 70.0-130 (S) 2,5-Dibromotoluene(PID) 87.4 88.2 70.0-130 L1534070-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1534070-05 09/16/22 16:19 • (MS) R3839093-4 09/17/22 01:05 • (MSD) R3839093-5 09/17/22 01:38 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Unadjusted C5-C8 Aliphatics 1200 ND 1190 1070 99.2 89.2 1 70.0-130 10.6 25 Unadjusted C9-C12 Aliphatics 1400 ND 1330 1190 95.0 85.0 1 70.0-130 11.1 25 Unadjusted C9-C10 Aromatics 200 ND 165 147 82.5 73.5 1 70.0-130 11.5 25 Total VPH 2800 ND 2690 2410 96.1 86.1 1 70.0-130 11.0 25 (S) 2,5-Dibromotoluene(FID) 99.2 96.9 70.0-130 (S) 2,5-Dibromotoluene(PID) 90.8 88.9 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:07 7 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:09 7 of 11 QUALITY CONTROL SUMMARYWG1930132 TPH by Method MADEPE L1534260-01 Method Blank (MB) (MB) R3840604-1 09/22/22 16:35 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Unadjusted C9-C18 Aliphatics U 33.3 100 Unadjusted C19-C36 Aliphatics U 33.3 100 (S) 1-Chloro-octadecane 83.8 40.0-140 Method Blank (MB) (MB) R3840604-4 09/22/22 17:44 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Unadjusted C11-C22 Aromatics 33.9 J 33.3 100 (S) o-Terphenyl 89.6 40.0-140 (S) 2-Fluorobiphenyl 102 40.0-140 (S) 2-Bromonaphthalene 100 40.0-140 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3840604-2 09/22/22 16:58 • (LCSD) R3840604-3 09/22/22 17:21 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Unadjusted C9-C18 Aliphatics 600 198 175 33.0 29.2 40.0-140 J4 J4 12.3 25 Unadjusted C19-C36 Aliphatics 800 760 660 95.0 82.5 40.0-140 14.1 25 (S) 1-Chloro-octadecane 88.6 79.4 40.0-140 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3840604-5 09/22/22 18:07 • (LCSD) R3840604-6 09/22/22 18:30 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Unadjusted C11-C22 Aromatics 1700 1310 1310 77.1 77.1 40.0-140 0.000 25 (S) o-Terphenyl 85.4 83.5 40.0-140 (S) 2-Fluorobiphenyl 95.4 96.7 40.0-140 (S) 2-Bromonaphthalene 94.6 96.1 40.0-140 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:07 8 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:09 8 of 11 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. ND Not detected at the Reporting Limit (or MDL where applicable). RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description J The identification of the analyte is acceptable; the reported value is an estimate. J4 The associated batch QC was outside the established quality control range for accuracy. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:07 9 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:09 9 of 11 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:07 10 of 11 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Wood E&I Solutions Inc. - Asheville, NC 6252-16-0231.09 L1534260 09/23/22 14:09 10 of 11