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HomeMy WebLinkAboutWA-27119_38285_CA_RPTS_20170301_MRP Environment Submitted to 7-Eleven, Inc. 3200 Hackberry Road Irving, TX 75063 Prepared by AECOM Raleigh, NC 60338486 March 2017 Groundwater Monitoring Report 7-Eleven Store No. 19847 1610 South Croatan Highway Kill Devil Hills, North Carolina Incident # 38285 Environment Submitted to 7-Eleven, Inc. 3200 Hackberry Road Irving, TX 75063 Prepared by AECOM Raleigh, NC 60338486 March 2017 Groundwater Monitoring Report _________________________________ Prepared By Nathan Pinsker _________________________________ Reviewed By Michelle Friedman, P.G. _________________________________ Reviewed By Marie Treiber 7-Eleven Store No. 19847 1610 South Croatan Highway Kill Devil Hills, North Carolina Incident # 38285 AECOM Environment i 7-Eleven #19847 Groundwater Monitoring Report March 2017 Executive Summary ............................................................................................................................................................. ES-1 1 Introduction ......................................................................................................................................................................... 1-1 2 Site Information ................................................................................................................................................................... 2-1 2.1 Site Identification ......................................................................................................................................................... 2-1 2.2 Contact Information ..................................................................................................................................................... 2-1 2.3 Information about the Release .................................................................................................................................... 2-1 3 Site History and Characterization ...................................................................................................................................... 3-1 3.1 Underground Storage Tank Systems .......................................................................................................................... 3-1 3.2 Aboveground Storage Tank Systems ......................................................................................................................... 3-1 3.3 Historical Release Information .................................................................................................................................... 3-1 3.4 Site Characteristics and Land Use .............................................................................................................................. 3-1 3.5 Site Geology and Hydrogeology ................................................................................................................................. 3-2 3.6 Current Status of Remediation .................................................................................................................................... 3-2 4 Field Activities ..................................................................................................................................................................... 4-1 4.1 Groundwater Sampling ............................................................................................................................................... 4-1 4.2 Water Supply Well Sampling ....................................................................................................................................... 4-1 5 Results ................................................................................................................................................................................. 5-1 5.1 Gauging Results ......................................................................................................................................................... 5-1 5.2 Groundwater Sampling Results .................................................................................................................................. 5-1 5.3 Groundwater Concentration Trends ............................................................................................................................ 5-1 5.4 Private Water Well Sampling Results ......................................................................................................................... 5-2 5.5 Soil Sampling Results ................................................................................................................................................. 5-2 6 Conclusions and Recommendations ................................................................................................................................ 6-1 7 References ........................................................................................................................................................................... 7-1 List of Appendices Appendix A Notice of Regulatory Requirements Laboratory Analytical Results Appendix B MW-3/MW-3R, MW-5, and MW-10 Trend Graphs Appendix C Table of Contents AECOM Environment ii 7-Eleven #19847 Groundwater Monitoring Report March 2017 List of Tables Table 3-1. (Reporting Table B-2) Site History – UST Owner/Operator and Other Responsible party Information Table 3-2. (Reporting Table B-1) Site History – UST/AST System and Other Release Information Table 3-3. (Reporting Table B-5) Public and Private Water Supply Wells and Other Receptor Information Table 4-1. (Reporting Table B-7) Monitoring and Remediation Well Construction Information Table 5-1. (Reporting Table B-4a) Summary of Groundwater Sampling Results Table 5-2. (Reporting Table B-4b) Historical Groundwater Sampling Results Table 5-3. (Reporting Table B-3) Summary of Soil Sampling Results List of Figures Figure 1-1. Site Location Map Figure 1-2. Site Map Figure 3-1. Private Well Location Map Figure 5-1. Groundwater Elevation Map, February 2017 Figure 5-2. Dissolved Benzene Isoconcentration Map, February 2017 Figure 5-3. Dissolved Xylene Isoconcentration Map, February 2017 Figure 5-4. Dissolved Naphthalene Isoconcentration Map, February 2017 Figure 5-5. Dissolved n-Propylbenzene Isoconcentration Map, February 2017 AECOM Environment iii 7-Eleven #19847 Groundwater Monitoring Report March 2017 List of Acronyms 2L Standard Title 15A North Carolina Administrative Code 2L Groundwater Standard AECOM AECOM Technical Services of North Carolina, Inc. AST aboveground storage tanks bgs below ground surface CSA Comprehensive Site Assessment DW deep well EPA United States Environmental Protection Agency ft/ft feet per foot GPS global positioning system MW monitoring well NC North Carolina NCDEQ North Carolina Department of Environmental Quality Site 7-Eleven Store No. 19847 Test America Test America Laboratories, Inc. TN Tennessee TX Texas USCS Unified Soil Classification System UST underground storage tank VOCs volatile organic compounds VPH volatile petroleum hydrocarbon µg/L micrograms per liter AECOM Environment ES-1 7-Eleven #19847 Groundwater Monitoring Report March 2017 As required by the North Carolina Department of Environmental Quality in correspondence dated September 28, 2016, AECOM Technical Services of North Carolina, Inc. (AECOM) prepared this Groundwater Monitoring Report for activities conducted at the 7-Eleven Store No. 19847 (Site), located at 1610 South Croatan Highway, Kill Devil Hills, North Carolina. The Site has been classified as high risk due to the presence of nearby irrigation wells. The Site is currently used as a 7-Eleven convenience store only; site underground storage tanks (USTs) were removed in February 2013. On February 17, 2017, ten on- and off-site monitoring wells (MW) (MW-2R, MW-3R, MW-4 to MW-10, and DW-1) were sampled. Groundwater samples were analyzed for volatile organic compounds (VOCs). During sampling, three VOCs were detected above their respective Title 15A North Carolina Administrative Code 2L Groundwater Standards (2L Standards) in wells MW-3, MW-5, and/or MW-10: benzene, naphthalene, and n-propylbenzene. No other compounds exceeded the 2L Standards during the February 2017 sampling event. Groundwater concentrations of VOC compounds have decreased, and concentrations remained stable or decreased from July 2016 to February 2017 with the exception of MW-8, which had detectable amounts of several VOCs below 2L Standards. Since August 2012, prior to the removal of the site USTs, concentrations of benzene, naphthalene, toluene, ethylbenzene, 1,2,4-trimethylbenzene, and total xylenes in MW-3 have decreased by more than an order of magnitude. Similar, though less dramatic decreases, occurred at MW-5. Since installation of MW-10 in January 2015, concentrations of petroleum-related compounds have decreased. The groundwater flow direction during the February 17, 2017 event was to the east, with a gradient of approximately 0.003 feet per foot. This is consistent with historical observations of site groundwater flow. AECOM attempted to contact two nearby property owners to sample their irrigation wells. AECOM was unable to successfully contact the property owner at 1617 Wrightsville Avenue or 1620 South Memorial Boulevard. Historically, the property owner at 1617 Wrightsville Avenue refused access. AECOM recommends continued semi-annual sampling. Executive Summary AECOM Environment 1-1 7-Eleven #19847 Groundwater Monitoring Report March 2017 As required by the North Carolina Departmental of Environmental Quality (NCDEQ) in correspondence dated September 28, 2016 (also included in Appendix A), AECOM Technical Services of North Carolina, Inc. (AECOM) conducted a site-wide groundwater monitoring event at the 7-Eleven Store No. 19847 (Site), located at 1610 S. Croatan Highway, Kill Devil Hills, North Carolina (NC) (Figure 1-1 and Figure 1-2). A release was discovered during the in-place abandonment of underground storage tank (UST) #2 on April 10, 2012 (AECOM, 2012a). An Initial Abatement Action Report (AECOM, 2012b), a Limited Site Assessment (AECOM, 2012c), a UST closure report (AECOM, 2013a), and a Comprehensive Site Assessment (CSA) (AECOM, 2013b) have been completed at the Site. The Site is currently on a semi-annual groundwater monitoring schedule. 1 Introduction AECOM Environment 2-1 7-Eleven #19847 Groundwater Monitoring Report March 2017 The following sections provide site background and contact information. 2.1 Site Identification − Date of Incident Report: April 11, 2012 − Facility ID: 0-011788 Incident Number: 38285 Site Risk Classification: High − Site Rank: H 162 D − Site Name: 7-Eleven Store No. 19847 − Site Street Address: 1610 South Croatan Highway (Note: the Site is identified as 1601 South Croatan Highway in the Dare County geographic information system mapper, available online at http://daregis.darenc.com/website/dare/viewer.htm.) − City/Town: Kill Devil Hills Zip Code: 27948 County: Dare − Description of Geographical Data Point (e.g., dispenser): UST fill port − Location Method (global positioning system [GPS], topographical map, other): GPS − Latitude (decimal degrees): 35.9986° Longitude (decimal degrees): 75.6513° 2.2 Contact Information − UST Owner: 7-Eleven, Inc.; Address: 1722 Routh Street, Dallas, Texas (TX); Telephone: (972) 828-0711 − UST Operator: 7-Eleven, Inc.; Address: 1610 South Croatan Highway, Kill Devil Hills, NC; Telephone: (252) 441-4549 − Property Owner: 7-Eleven, Inc. Employees’ Trust, c/o Evercore Trust Company; Address: 601 South Figueroa Street, 44th Floor, Los Angeles, California 90017; Telephone: (213) 443-2626 − Property Occupant: 7-Eleven,Inc.; Address: 1722 Routh Street, Dallas, TX; Telephone: (972) 828-0711 − Consultant/Contractor: AECOM; Address: 1600 Perimeter Park Drive, Suite 400, Raleigh NC 27560; Telephone: (919) 461-1100 − Analytical Laboratory: Test America Laboratories, Inc. (Test America), State Certification No. 387; Address: 2960 Foster Creighton Drive, Nashville, Tennessee (TN) 37204; Telephone: (615) 301-5042 2.3 Information about the Release After removing UST #2 from service in May 2011 due to false leak detection warnings, 7-Eleven decided to abandon it in place. On April 10, 2012, strong petroleum odors were observed during the installation of two soil borings, one of which was converted into a groundwater monitoring well (MW). A suspected release was reported to NCDEQ on April 11, 2012. The release was confirmed with the receipt of analytical data, received April 18, 2012. In February 2013, the three USTs were removed, including UST #2. Petroleum odors and soil staining were observed, and a sheen of non-aqueous phase liquid was observed in the tank field following the removal of the USTs. Pinhole leaks were observed in the walls of the fiberglass USTs. 2 Site Information AECOM Environment 3-1 7-Eleven #19847 Groundwater Monitoring Report March 2017 The following sections provide information on the USTs operated at the Site and follows the general outline established in Guidelines for Assessment and Corrective Action for UST Releases. 3.1 Underground Storage Tank Systems UST owner operator and other responsible party information are provided in Table 3-1. A summary of current and former USTs maintained at the Site is provided below and summarized in Table 3-2. Three 10,000-gallon USTs were installed on-site in 1985. UST #2 was removed from service in May 2011 due to false leak detection warnings, and was abandoned in place on April 10, 2012. A suspected release was reported to NCDEQ on April 11, 2012. The three USTs were removed from the Site on February 6, 2013. The USTs were single-walled fiberglass, with single-walled fiberglass piping and under dispenser containment. Since installation, the USTs contained gasoline. At the time of removal, pinhole leaks were observed in the side of the USTs. Based on observations made during the February 2013 tank removal, all three of the USTs may have contributed to the release. AECOM has not conducted previous (pre-2012) investigations at this site. No reports of previous site investigations (pre-2012) are known. 3.2 Aboveground Storage Tank Systems No aboveground storage tank systems (ASTs) are currently present on-site. Based on available information, no ASTs have historically been present at the Site. 3.3 Historical Release Information No historical releases, prior to the release discovered during the 2012 UST abandonment activities, are known. 3.4 Site Characteristics and Land Use The location of the Site is shown on a portion of the United States Geological Survey 7.5-minute topographic map of the Kill Devil Hills, NC (1984) Quadrangle (Figure 1-1). The layout of the Site is found on Figure 1-2. The Site is currently an active 7-Eleven convenience store located on the east side of South Croatan Highway (US-158). The majority of the Site is occupied by the 7-Eleven building and paved parking area, with some grassy area along the southern side of the Site. A drainage ditch is located along the west side of the Site. The Site and surrounding properties are located within the Town of Kill Devil Hills and Dare County. Use of the Site and surrounding properties is consistent with business and residential areas in an urban setting. The Site and properties located within the Town of Kill Devil Hills generally receive municipal water from the Town of Kill Devil Hills, which receives its water from Dare County Water Department. Properties located within Dare County receive municipal water from Dare County or private wells. No potable wells have been identified within 1,500 feet of the Site (AECOM, 2012b), and municipal water (from the Town of Kill Devil Hills) is available to properties within 1,500 feet of the Site. Two irrigation wells have been identified within 500 feet of the Site: − 1617 Wrightsville Avenue (approximately 250 feet southeast of the tank field) – The well was installed in 2000 to a depth of 75 feet below ground surface (bgs) and is used for irrigation. Based on site reconnaissance, the well may be located in a small structure adjacent to the residence; however, the well location could not be confirmed as the 3 Site History and Characterization AECOM Environment 3-2 7-Eleven #19847 Groundwater Monitoring Report March 2017 resident was not at home during the site reconnaissance. The approximate location of the structure is shown on Figure 3-1. − 1620 South Memorial Boulevard (approximately 400 feet southeast of the tank field) – The well was installed in 2001 to a depth of 50 feet bgs and is used for irrigation. No well-related structures were identified during the February 2013 reconnaissance; a presumed location of the well is shown on Figure 3-1. Two additional irrigation wells were identified within 1,000 feet of the Site based on information provided by Mr. Charles Spry (owner of 1617 Wrightsville Avenue) and confirmed by discussions with representatives of the property owners. One irrigation well is present at Nags Head Hammocks, located at 1801 Croatan Highway and approximately 750 feet cross-gradient from the Site, and one irrigation well is present at Wings, located at 1405 South Croatan Highway and approximately 650 feet cross-gradient of the Site. The information on private wells is summarized on Table 3-3. 3.5 Site Geology and Hydrogeology The Site is located within the Coastal Plain physiographic province. Based on observations made during the installation of the six site monitoring wells, subsurface soils consist predominantly of brown to gray fine sand (Unified Soil Classification System [USCS] symbol SP) to 20 feet bgs. A layer of poorly sorted sand (USCS symbol SW) was observed at deep well (DW-1) from a depth of 20-25 feet, below which brown-gray fine sand continued to a depth of 53 feet. A gray clay layer containing shell material (USCS symbol CL) was encountered from 53-54 feet bgs. Below the clay layer, the brown-gray fine sand continued until the monitoring well boring was terminated at 70 feet bgs. Petroleum odors and elevated photo ionization detector readings were noted during the installation of MW-5 and DW-1. No odor, staining, or other evidence of petroleum contamination was observed during the installation of wells MW-2R and MW-6, located north and west of the tank field, respectively. The Site topography is generally flat. Historically, groundwater has been encountered between roughly 1.5 feet bgs and 4.5 feet bgs. Aquifer testing was attempted in August 2013 during the CSA phase, but was not completed due to the quick recharge of the Site monitoring wells. Based on Site lithology and literature values, the hydraulic conductivity of the surficial aquifer was estimated to be approximately 0.0032 centimeters per second or 9 feet per day (AECOM, 2013b). Assuming the shallow wells to be fully penetrating (aquifer thickness of 12 feet) and using aforementioned literature value for hydraulic conductivity, the calculated transmissivity is 1.17 centimeters squared per second or 108 square feet per day. Groundwater flow was determined to be eastward toward the Atlantic Ocean. The hydraulic gradient was approximately 0.004 feet per foot (ft/ft) in July 2016. Based on liquid level data, it appears that the gradient flattens out across the former tank field, which is likely related to the presence of fill material. 3.6 Current Status of Remediation To address the subsurface contamination, 102,617 gallons of petroleum-impacted water was removed from the tank field wells and well MW-3 and 351.69 tons of petroleum-impacted soils were removed from the subsurface. These initial abatement measures were conducted with approval from NCDEQ during UST removal. The following post-excavation activities have been conducted at the Site as part of the groundwater monitoring investigation: − In October 2012, monitoring well MW-3 was over-drilled and replaced with a 4-inch diameter well (MW-3R). − In July 2013, monitoring wells MW-2R and MW-6 were installed to replace monitoring wells MW-1 and MW-2, which were destroyed during the UST removal. − In July 2013, monitoring wells MW-5 and DW-1 were installed to further characterize site groundwater conditions. − In May 2014, monitoring wells MW-7 to MW-9 were installed off-site. − In January 2015, monitoring well MW-10 was installed off-site. AECOM Environment 4-1 7-Eleven #19847 Groundwater Monitoring Report March 2017 Site activities were conducted in accordance with the Region 4 United States Environmental Protection Agency (EPA) Environmental Investigations Standard Operating Procedures and Quality Manual. 4.1 Groundwater Sampling A groundwater sample was collected from each of the 10 site groundwater monitoring wells (MW-2R to MW-10 and DW-1) on February 17, 2017. Prior to sampling, each well was gauged using an oil/water interface probe. Figure 1-2 shows the monitoring well locations. The elevation summary for the wells is provided in Table 4-1. A decontaminated whale pump was used to purge monitoring wells MW-2R, MW-4, MW-6, MW-7, MW-8, MW-9, and DW-1. Dedicated disposable bailers were used to sample the wells. Dedicated disposable bailers were also used to purge and sample monitoring wells MW-3R, MW-5, and MW-10. Three well volumes were purged from each monitoring well prior to sample collection. The purging was performed on all wells prior to any sampling activities. The samples were collected directly in laboratory prepared containers for shipment to the laboratory as described in the preceding section. Groundwater samples were analyzed for volatile organic compounds (VOCs) via EPA Method SM 6200B. Samples were sent to Test America of Nashville, TN, for analysis. 4.2 Water Supply Well Sampling NCDEQ correspondence to 7-Eleven, dated September 28, 2016, required the sampling of the two water supply wells identified within 500 feet of the Site (1617 Wrightsville Avenue and 1620 South Memorial Boulevard). The property owner at 1617 Wrightsville Avenue and 1620 South Memorial Boulevard could not be reached prior to the February 2017 groundwater sampling event to confirm the well’s operational status and obtain permission to sample the well. Historically, the property owner at 1617 Wrightsville Avenue refused access. To date, the private wells have not been sampled by AECOM. 4 Field Activities AECOM Environment 5-1 7-Eleven #19847 Groundwater Monitoring Report March 2017 5.1 Gauging Results On February 16, 2017, groundwater was encountered between 2.00 feet bgs (MW-9) to 3.88 feet bgs (DW-1). Groundwater flow was estimated to be toward the east, with a gradient of approximately 0.003 ft/ft (Figure 5-1). Groundwater gauging data and monitoring well details are summarized on Table 4-1. 5.2 Groundwater Sampling Results The following compounds were detected above their Title 15A North Carolina Administrative Code 2L Groundwater Standard (2L Standard) in one or more wells: − Benzene exceeded its 2L Standard of 1 microgram per liter (µg/L) in well MW-3R (17.5 µg/L), MW-5 (11.1 µg/L), and MW-10 (9.23 µg/L). − Naphthalene exceeded its 2L Standard of 6 µg/L in well MW-3R (53.8 µg/L), MW-5 (191 µg/L), and MW-10 (153 µg/L). − n-Propylbenzene exceeded its 2L Standard of 70 µg/L in well MW-5 (70.8 µg/L). Ten compounds were only detected below 2L Standards in one or more wells: ethylbenzene, methyl tert-butyl ether, n-butylbenzene, sec-butylbenzene, isopropylbenzene, p-isopropyltoluene, toluene, 1,2,4-trimethylbenzene,1,3,5-trimethylbenzene, and total xylenes. No VOC compounds were detected in the samples collected from monitoring wells MW-2R, MW-4, MW-6, MW-7, and MW-9 during the February 2017 monitoring event. Analytical results for the February 2017 monitoring event are summarized in Table 5-1 and historical analytical data is included in Table 5-2. Figures 5-2 to 5-5 include isoconcentration maps for benzene, xylene, naphthalene, and n-propylbenzene, respectively. Laboratory analytical reports are included in Appendix B. 5.3 Groundwater Concentration Trends Groundwater concentrations of VOC compounds in wells MW-3/MW-3R and MW-5 have generally decreased. Overall, concentrations of benzene, naphthalene, toluene, 1,2,4-trimethylbenzene, total xylenes, and volatile petroleum hydrocarbon (VPH) compounds in MW-3/MW-3R have decreased by approximately an order of magnitude since installation of this well in 2012. Mann-Kendall analysis of the trends concentrations of benzene, ethylbenzene, naphthalene, and xylenes in well MW- 3/MW-3R and MW-5 are “decreasing.” VPH compounds were not analyzed during the current groundwater monitoring event; through January 2015, VPH compound trends are “stable,” “decreasing,” or “probably decreasing.” Well MW-10 was installed in January 2015, and five sampling events have been conducted to date. Though concentrations have fluctuated slightly, Mann-Kendall analysis suggests concentrations are stable (naphthalene), decreasing (benzene and ethylbenzene), or lack a trend (xylenes, concentrations below 2L Standard). The GSI Mann-Kendall Toolkit trend graphs for MW-3R, MW-5, and MW-10 are included as Appendix C. 5 Results AECOM Environment 5-2 7-Eleven #19847 Groundwater Monitoring Report March 2017 5.4 Private Water Well Sampling Results As discussed in Section 4.2, no private wells were sampled during the February 2017 sampling event. 5.5 Soil Sampling Results Historical soil sampling results are included on Table 5-3. Petroleum-impacted soils were unable to be excavated on the eastern side of the Site due to the presence of underground utilities. AECOM Environment 6-1 7-Eleven #19847 Groundwater Monitoring Report March 2017 Based on the February 2017 groundwater sampling event, the following conclusions are made: − Groundwater flow is expected to be toward the east. − The plume is delineated to 2L Standards vertically and to the west, south, and east. − Multiple compounds exceeded 2L Standards in monitoring wells MW-3R, MW-5, and MW-10. − Overall, concentrations have decreased since the 2013 removal of the site USTs. This suggests that the removal of the USTs and more than 300 tons of petroleum-impacted soils is aiding natural attenuation. − The two nearby irrigation wells were not available for sampling during this event. AECOM has been unable to contact the property owners at 1617 Wrightsville Avenue and 1620 South Memorial Boulevard. AECOM recommends the following: − Sample the site monitoring wells in August 2017. − Sample the off-site irrigation wells, if access is granted by the property owners. − Submit a semi-annual groundwater monitoring report by October 31, 2017. 6 Conclusions and Recommendations AECOM Environment 7-1 7-Eleven #19847 Groundwater Monitoring Report March 2017 AECOM, 2012a. 20-Day Report, 7-Eleven Store No. 19847, 1610 S. Croatan Highway, Kill Devil Hills, NC. May 2012. AECOM, 2012b. Initial Abatement Action Report, 7-Eleven Store No. 19847, 1610 South Croatan Highway, Kill Devil Hills, NC. July 2012. AECOM, 2012c. Limited Site Assessment Report, 7-Eleven Store No. 19847, 1610 South Croatan Highway, Kill Devil Hills, NC. August 2012. AECOM, 2013a. Pre-Corrective Action Plan Groundwater Monitoring and Underground Storage Tank Closure Report, 7-Eleven Store No. 19847, 1610 South Croatan Highway, Kill Devil Hills, NC. March 2013. AECOM, 2013b Comprehensive Site Assessment Report, 7-Eleven Store No. 19847, 1610 South Croatan Highway, Kill Devil Hills, NC. September 2013. 7 References AECOM Environment 7-Eleven #19847 Groundwater Monitoring Report March 2017 Tables Table 3-1 Site History - UST Owner/Operator and Other Responsible Party Information 7-Eleven Store No. 19847 Kill Devil Hills, NC Incident Number: 38285 Facility ID #: 0-011788 Revision Date: 09/19/2013 UST ID Number 1,2,3 (All removed February 2013)Facility ID Number 0-011788 City State Zip Telephone Number Dallas TX 75201 978-828-0711 City State Zip Telephone Number Kill Devil Hills NC 27948 252-441-4549 Notes: NC - North CarolinaTX - Texas Name of UST Owner Date of Operation Address 1722 Routh Street, Suite 1000 Name of UST Operator Date of Operation Address 1601 South Croatan Highway 7-Eleven, Inc. 1985 to Present 7-Eleven, Inc. 1985 to Present AECOM Table 3-2Site History - UST/AST System and Other Release Information7-Eleven Store No. 19847Kill Devil Hills, NCIncident Number: 38285 Facility ID #: 0-011788 Revision Date: 09/19/2013UST ID NumberCurrent / Last ContentsPrevious ContentsCapacity (gallons)Construction DetailsTank Dimensions (feet)Associated Piping and PumpsDate Installed Current StatusWas release associated with UST System?1Regular Unleaded GasolineGasoline 10,000Single-walled fiberglass8 x 27Single-walled fiberglassApril 1985RemovedFebruary 2013Yes2Regular Unleaded GasolineGasoline 10,000Single-walled fiberglass8 x 27Single-walled fiberglassApril 1985Abandoned in Place April 2012; removed February 2013Yes3Premium Unleaded GasolineGasoline 10,000Single-walled fiberglass8 x 27Single-walled fiberglassApril 1985RemovedFebruary 2013YesIncident NumberMaterial ReleasedDate of Release38285 Gasoline April 10, 2012Note:UST - Underground Storage TankDescription of ReleasePetroleum odors observed during installation of soil borings. Analytical results, received April 18, 2012, confirmed presence of petroleum in soil and groundwater.AECOM Table 3-3Public and Private Water Supply Wells and Other Receptor Information7-Eleven Store No. 19847Kill Devil Hills, NCIncident Number: 38285 Facility ID #: 0-011788 Revision Date: 3/24/2017Map ID 1PINWell Owner 2Property Address Mailing Address Phone Number Well UseWell Depth (ft bgs)Type of WellWell Casing Depth (ft bgs)Well Screen Interval (ft bgs)Distance from source area of release 3(ft)Up or Downgradient4PW-1 989309058019 Scruggs and Simmons1620 S. Memorial BoulevardKill Devil Hills, NC 2794814441 Makenzie Lee Road Disputanta, VA 23842804-861-1761 Irrigation 50 N/A N/A N/A 400 Cross-gradientPW-2 989309056085 Charles and Kim Spry1617 Wrightsville Avenue Kill Devil Hills, NC 27948 1617 Wrightsville Avenue Kill Devil Hills, NC 27948 252-480-0794 Irrigation 75 N/A N/A N/A 250 Cross-gradient989313046470 Nags Head Hammocks1801 Croatan HighwayKill Devil Hills, NC1801 Croatan HighwayKill Devil Hills, NCBill252-441-6115Irrigation N/A N/A N/A N/A 750 Cross-gradient988312959785 Wings1405 S. Croatan HighwayKill Devil Hills, NC1405 S. Croatan HighwayKill Devil Hills, NCWendy252-480-0009x21Irrigation N/A N/A N/A N/A 650 Cross-gradientContact Phone NumberDistance from source area of release (ft)Up or Downgradient2N/A N/A 1,200 Up-GradientN/A N/A 1,500 Up-GradientNotes:1 - Map ID refers to Figure 3-1.2 - Well Owner information based on results of the well survey. 3 - Exact location of well unknown; distance from source area calculated based on the nearest property boundary4 - Groundwater gradient is expected to be toward the east-northeast based on gauging data collected in Janary 2016ft - feetft bgs - feet below ground surfaceN/A - not availableNC - North CarolinaNW - NorthwestPIN - Parcel Identification NumberSW - SouthwestVA - VirginiaWell Survey (within 500 feet)Other ReceptorsReceptor IDDescriptionUsagePWS 0428030 Dare County Water System Wellhead Protection Area (NW of Site)Wellhead Protection AreaPWS 0428030 Dare County Water System Wellhead Protection Area (SW of Site)Wellhead Protection AreaAECOM Table 4-1Monitoring and Remediation Well Construction Information7-Eleven Store No. 19847Kill Devil Hills, NCIncident Number: 38285 Facility ID #: 0-011788 Revision Date: 03/23/2017Well ID Date InstalledDate Water Level MeasuredWell Casing Diameter (in)Well Casing Depth (ft bgs)Screened Interval (ft bgs)Depth of well (ft bgs)Top of Casing Elevation (msl)Depth to Water from TOC (ft)Free Product Thickness (ft)Groundwater Elevation (ft)Comments4/9/2012 44/9/2012 N/A N/A 8.53 3.18 0 5.748/9/2012 N/A N/A 8.53 1.90 0 7.024/9/2012 N/A N/A 8.26 3.53 0 5.388/9/2012 N/A N/A 8.26 1.85 0 7.064/9/2012 44/10/20123.75 05.628/12/20122.47 06.908/12/201220 - 2.5 2.5 - 15 15 8.56 1.67 06.898/12/201220 - 2.5 2.5 - 15 15 9.43 2.60 06.838/2/20133.12 05.402/7/20142.42 06.108/5/20142.05 06.471/21/20152.27 06.257/30/20153.04 05.481/14/20162.49 06.037/25/20163.10 05.422/16/20172.68 05.848/2/20134.10 05.232/7/20143.39 05.948/5/20143.01 06.321/21/20153.25 06.087/30/20154.08 05.251/14/20163.46 05.877/25/20164.11 05.222/16/20173.67 05.66MW-3 8/9/2012Well destroyed during February 2012 UST removal activitiesWell destroyed during February 2012 UST removal activitiesWell destroyed during February 2012 UST removal activitiesWell destroyed during February 2012 UST removal activitiesWell Abandoned 10/26/2012Well Abandoned 10/26/2012Well over-drilled and replaced with a 4-inch well (MW-3R) on 10/26/2012TF-2 N/AMW-2 8/9/201215 9.372 0 - 2.5 2.5 - 15MW-1 4/10/2012unable to remove well cap - could not gaugeunable to remove well cap - could not gauge448.928.91TF-1 N/ATF-4 N/AN/ATF-312 8.52MW-3R 10/26/2012 4 0 - 2.5 2.5 - 15 15 9.33MW-2R 7/30/2013 2 0-2 2 - 12AECOMPage 1 of 3 Table 4-1Monitoring and Remediation Well Construction Information7-Eleven Store No. 19847Kill Devil Hills, NCIncident Number: 38285 Facility ID #: 0-011788 Revision Date: 03/23/2017Well ID Date InstalledDate Water Level MeasuredWell Casing Diameter (in)Well Casing Depth (ft bgs)Screened Interval (ft bgs)Depth of well (ft bgs)Top of Casing Elevation (msl)Depth to Water from TOC (ft)Free Product Thickness (ft)Groundwater Elevation (ft)Comments8/2/20133.31 05.582/7/20142.64 06.258/5/20142.31 06.581/21/20152.51 06.387/30/20153.24 05.651/14/20162.73 06.167/25/20163.31 05.582/16/20172.91 05.988/2/20134.17 05.192/7/20143.47 05.898/5/20143.10 06.261/21/20153.31 06.057/30/20154.13 05.231/14/20163.51 05.857/25/20164.18 05.182/16/20173.72 05.648/2/20133.93 05.382/7/20143.27 06.048/5/20142.91 06.401/21/20153.13 06.187/30/20153.87 05.441/14/20163.33 05.987/25/20163.93 05.382/16/20173.51 05.808/5/20142.22 05.931/21/20152.51 05.647/30/20153.43 04.721/14/20162.70 05.457/25/20163.36 04.792/16/20172.93 05.2215 8.89MW-5MW-6MW-7 5/12/20147/30/20137/30/2013 2 0-2 2 - 12 12 9.369.31122 - 12MW-4 8/9/2012 2 0 - 2.5 2.5 - 150-222 12 8.150-2 2 - 12AECOMPage 2 of 3 Table 4-1Monitoring and Remediation Well Construction Information7-Eleven Store No. 19847Kill Devil Hills, NCIncident Number: 38285 Facility ID #: 0-011788 Revision Date: 03/23/2017Well ID Date InstalledDate Water Level MeasuredWell Casing Diameter (in)Well Casing Depth (ft bgs)Screened Interval (ft bgs)Depth of well (ft bgs)Top of Casing Elevation (msl)Depth to Water from TOC (ft)Free Product Thickness (ft)Groundwater Elevation (ft)Comments8/5/20141.94 05.871/21/20152.18 05.637/30/20153.08 04.731/14/20162.35 05.467/25/20163.13 04.682/16/20172.60 05.218/5/20141.33 06.001/21/20151.58 05.757/30/20152.48 04.851/14/20161.77 05.567/25/20162.54 04.792/16/20172.00 05.331/21/20151.74 05.837/30/20152.60 04.971/14/20161.89 05.687/25/20162.63 04.942/16/20172.11 05.468/2/20134.37 04.902/7/20143.68 05.598/5/20143.27 06.001/21/20153.54 05.737/30/20154.35 04.921/14/20163.66 05.617/25/20164.40 04.872/16/20173.88 05.39Notes:ft - feetft bgs - feet below ground surfacein - inchesmsl - mean sea levelN/A - not availableNC - North CarolinaNM - not measuredNS - not surveyedSite wells constructed as a flush-mount wells. TOC - top of casingMW-8MW-9DW-1 7/31/20135/12/20145/12/2014MW-10 1/19/2015222 0-2 2 - 12 12 7.8112 7.572 0-60 60 - 70 70 9.2712 7.330-2 2 - 120-2 2 - 12AECOMPage 3 of 3 Table 5-1Summary of Groundwater Sampling Results February 20177-Eleven Store No. 19847Kill Devil Hills, NCIncident Number: 38285 Facility ID #: 0-011788 Revision Date: 03/23/2017WellDate CollectedChloroformMW-2R 2/17/2017<0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0MW-3R2/17/201717.5 17 5.33<0.5 <0.538.4 9.3<0.5 <0.553.8 35.8 9.25 0.801 3.77 1.37 20.1MW-42/17/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0MW-52/17/201711.1 15.1 6.29<0.5 <0.5336 25.7 1.84<0.5191 70.8 53.4<0.5188 64.6 497MW-62/17/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0MW-72/17/2017 <0.5 <0.5 <0.50.946<0.5 <0.5 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0MW-82/17/2017 <0.5 <0.5 <0.5 <0.5 <0.50.998<0.5 <0.5 <0.5 <0.50.643<0.5 <0.51.41 0.693 1.05MW-92/17/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0MW-102/17/20179.23 8.18 4.1<0.5 <0.590.1 27.7<0.5 <0.5153 65.6 4.72<0.512.1 3.18 124DW-12/17/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.50.534<5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.01 70 70 70 70 600 70 -- 20 6 70 600 0.005400 400 500-- -- -- -- -- -- 25 -- -- -- -- -- -- -- --5,000 6,900 8,500 70,000 70,000 84,500 25,000 11,700 20,000 6,000 30,000 260,000 -- 28,500 25,000 85,500Notes:µg/L - micrograms per liter2L Standard - NCAC 2L Groundwater StandardBold - detected valueEPA - United States Environmental Protection AgencyGCL - gross contamination levelIMAC - NCAC Interim Maximum Allowable ConcentrationNC - North Carolina2L Standard (µg/L)IMAC (µg/L)GCL (µg/L)Isopropylbenzenep-IsopropyltolueneMethyl tert-butyl ether (MTBE)NaphthaleneBenzenen-Butylbenzenesec-ButylbenzeneDi-isopropyl ethern-PropylbenzeneToluene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneXylenes, total1,2,3-TrichloropropaneEthylbenzeneVOCs by EPA Method 6200BContaminant of ConcernAECOM Table 5-2Historical Groundwater Sampling Results7-Eleven Store No. 19847Kill Devil Hills, NCIncident Number: 38285 Facility ID #: 0-011788 Revision Date: 03/23/2017504.16010BWellDate CollectedSource Area Sample IDIncident Phase 4/10/2012MW-1 UST Closure860 1,200<100 <500190 6,300<0.5760 200 4,800<0.0114,000 9,700 6,600 1,800<5.08/12/2012MW-1 LSA690 1,000<50640 150 6,200<0.51200 300 6,800NA19,000 12,000 10,000 3,000<5.08/12/2012MW-2 LSA560 2,300<25570 220 13,000<0.51800 460 12,700NA36,000 23,000 17,000 3,700<5.08/2/2013MW-2R CSA <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100<5.02/7/2014MW-2R Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100<5.08/5/2014MW-2R Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100NA1/21/2015MW-2R Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100NA7/30/2015MW-2R Monitoring <0.50.868<0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NANA1/14/2016MW-2R Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NANA7/25/2016MW-2R Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NANA2/17/2017MW-2R Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NANAMW-3 8/12/2012 East of TFMW-3 LSA2700 1,500<501100 170 13,000<0.52300 620 12,800NA38,000 25,000 19,000 5,200<5.02/5/2013 MW 3 Dewater*430 630<10280 140 1,700<0.5550 200 2,380NA9,500 5,600 5,700 1,700NA2/11/2013 MW 3 Dewater*330 460<10260 120 1,400<0.5530 180 1,890NA7,800 4,600 4,800 1,600NA2/11/2013 MW-3R UST Closure91 54<1.0170 97 58<0.556 40 178NA2,300 1,600 1,400 760<5.08/2/2013 MW-3R CSA1100 1,800<50540 280 1,700<0.52400 600 4,700NA18,000 8,200 14,000 4,400<5.02/7/2014 MW-3R Monitoring400 770<50 <250160<250 <0.5890 260 1,030NA5,300 3,000 4,600 2,300<5.08/5/2014 MW-3R Monitoring120 360<5110 82<25 <0.5210 65 481NA3,900 1,500 2,300<1,000 NA1/21/2015 MW-3R Monitoring140 320<10160 120 410<0.5370 92 630NA4,800 2,800 3,500 1,500NA7/30/2015 MW-3R Monitoring39.4 326<0.5273 140 9.02<0.586 18.5 411NA NA NA NA NA NA1/14/2016 MW-3R Monitoring33.4 158<0.591.4 73.8 9.08<0.592.5 19.2 151NA NA NA NA NA NA7/25/2016 MW-3R Monitoring19.1 59.1<0.5135 84.8 2.99<0.513.4 5.04 22NA NA NA NA NA NA2/17/2017 MW-3R Monitoring17.5 38.4<0.553.8 35.8 9.25 0.801 3.77 1.37 20.1NA NA NA NA NA NAWell Abandoned 10/26/2012East of TFMW-2RNorth of TFVOCs by EPA Method 6200B MADEP VPHLeadBenzeneToluene1,2,4-TrimethylbenzeneC5-C8 AliphaticsEthylene Dibromide1,3,5-TrimethylbenzeneXylenes, totalVolatile Petroleum HydrocarbonsNaphthalenen-PropylbenzeneMethyl tert-butyl ether (MTBE)Contaminant of ConcernWell Abandoned 10/26/20121,2,3-TrichloropropaneC9-C12 AliphaticsC9-C10 AromaticsSouth of TFEthylbenzeneAnalytical Method (e.g. VOCs by EPA 8260)DewateringMW-2MW-1MW-3 over-drilled and replaced with 4-inch well (MW-3R) on 10/26/2012North of TFMW-3RAECOMPage 1 of 4 Table 5-2Historical Groundwater Sampling Results7-Eleven Store No. 19847Kill Devil Hills, NCIncident Number: 38285 Facility ID #: 0-011788 Revision Date: 03/23/2017504.16010BWellDate CollectedSource Area Sample IDIncident Phase VOCs by EPA Method 6200B MADEP VPHLeadBenzeneToluene1,2,4-TrimethylbenzeneC5-C8 AliphaticsEthylene Dibromide1,3,5-TrimethylbenzeneXylenes, totalVolatile Petroleum HydrocarbonsNaphthalenen-PropylbenzeneMethyl tert-butyl ether (MTBE)Contaminant of Concern1,2,3-TrichloropropaneC9-C12 AliphaticsC9-C10 AromaticsEthylbenzeneAnalytical Method (e.g. VOCs by EPA 8260)8/12/2012 MW-4 LSA <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 <5.08/2/2013 MW-4 CSA <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <1008.82/7/2014 MW-4 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 <5.08/5/2014 MW-4 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 NA1/21/2015 MW-4 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 NA7/31/2015 MW-4 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA1/14/2016 MW-4 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA7/25/2016 MW-4 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA2/17/2017 MW-4 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA8/2/2013 MW-5 CSA550 720<25330 200 580<0.5860 230 2,930NA7,800 3,200 6,300 1,800 7.52/7/2014 MW-5 Monitoring520 700<1.0290 92 42<0.51000 160 3,054NA7,100 2,900 7,000 2,800<5.08/5/2014 MW-5 Monitoring230 440<5240 86<25 <0.5590 160 1,300NA3,500 1,100 4,100 1,600NA1/21/2015 MW-5 Monitoring150 530<10210 100<50 <0.5480 100 802NA3,500 1,400 3,400 1,200NA7/30/2015 MW-5 Monitoring48.3 416<0.5159 66.6 3.15<0.5237 16.5 344NA NA NA NA NA NA1/14/2016 MW-5 Monitoring27.6 249<0.5161 75.6 7.10<0.5281 43.7 438NA NA NA NA NA NA7/25/2016 MW-5 Monitoring4.73 124<0.572.4 32.5 0.99<0.524.6 0.798 70NA NA NA NA NA NA2/17/2017 MW-5 Monitoring11.1 336<0.5191 70.8 53.4<0.5188 64.6 497NA NA NA NA NA NA8/2/2013 MW-6 CSA <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 <5.02/7/2014 MW-6 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.01.5<3.0 NA <100 <100 <100 <100 <5.08/5/2014 MW-6 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 NA1/21/2015 MW-6 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 NA7/31/2015 MW-6 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA1/14/2016 MW-6 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA7/25/2016 MW-6 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA2/17/2017 MW-6 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NASouth of TFMW-6MW-5 Southeast of TFMW-4 West of TFAECOMPage 2 of 4 Table 5-2Historical Groundwater Sampling Results7-Eleven Store No. 19847Kill Devil Hills, NCIncident Number: 38285 Facility ID #: 0-011788 Revision Date: 03/23/2017504.16010BWellDate CollectedSource Area Sample IDIncident Phase VOCs by EPA Method 6200B MADEP VPHLeadBenzeneToluene1,2,4-TrimethylbenzeneC5-C8 AliphaticsEthylene Dibromide1,3,5-TrimethylbenzeneXylenes, totalVolatile Petroleum HydrocarbonsNaphthalenen-PropylbenzeneMethyl tert-butyl ether (MTBE)Contaminant of Concern1,2,3-TrichloropropaneC9-C12 AliphaticsC9-C10 AromaticsEthylbenzeneAnalytical Method (e.g. VOCs by EPA 8260)5/12/2014 MW-7 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 <5.08/5/2014 MW-7 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 NA1/21/2015 MW-7 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 NA7/31/2015 MW-7 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA1/14/2016 MW-7 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA7/25/2016 MW-7 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA2/17/2017 MW-7 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA5/12/2014 MW-8 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 <5.08/5/2014 MW-8 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 NA1/21/2015 MW-8 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <0.5 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 NA7/31/2015 MW-8 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA1/14/2016 MW-8 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA7/25/2016 MW-8 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA2/17/2017 MW-8 Monitoring <0.50.998<0.5 <0.50.643<0.5 <0.51.41 0.693 1.05NA NA NA NA NA NA5/12/2014 MW-9 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <5.0 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 <5.08/5/2014 MW-9 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <5.0 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 NA1/21/2015 MW-9 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <5.0 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 NA7/31/2015 MW-9 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <5.0 <0.5 <0.5 <1.0 NA NA NA NA NA NA1/14/2016 MW-9 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA7/25/2016 MW-9 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA2/17/2017 MW-9 Monitoring <0.5 <0.5 <0.5 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA1/21/2015 MW-10 Monitoring230 710<10320 160<50 <0.570 19 320NA3,800 1,900 2,900 1,000NA7/31/2015 MW-10 Monitoring113 553<0.5217 102 287<0.5267 103 1,520NA NA NA NA NA NA1/14/2016 MW-10 Monitoring36.5 405<0.5449 226 9.48<0.5185 23.7 595NA NA NA NA NA NA7/25/2016 MW-10 Monitoring15.7 5.75<0.560.2 25.1 4.43<0.58.03 5.27 51.4NA NA NA NA NA NA2/17/2017 MW-10 Monitoring9.23 90.1<0.5153 65.6 4.72<0.512.1 3.18 124NA NA NA NA NA NAEast of TFMW-10MW-9 Southeast of TFEast of TFMW-8MW-7 East of TFAECOMPage 3 of 4 Table 5-2Historical Groundwater Sampling Results7-Eleven Store No. 19847Kill Devil Hills, NCIncident Number: 38285 Facility ID #: 0-011788 Revision Date: 03/23/2017504.16010BWellDate CollectedSource Area Sample IDIncident Phase VOCs by EPA Method 6200B MADEP VPHLeadBenzeneToluene1,2,4-TrimethylbenzeneC5-C8 AliphaticsEthylene Dibromide1,3,5-TrimethylbenzeneXylenes, totalVolatile Petroleum HydrocarbonsNaphthalenen-PropylbenzeneMethyl tert-butyl ether (MTBE)Contaminant of Concern1,2,3-TrichloropropaneC9-C12 AliphaticsC9-C10 AromaticsEthylbenzeneAnalytical Method (e.g. VOCs by EPA 8260)8/2/2013 DW-1 CSA <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <5.0 <1.0 <1.0 <3.0 NA <100 <100 <100 <1005.22/7/2014 DW-1 Monitoring <1.0 <1.01.3<5.0 <1.0 <5.0 <5.0 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 <5.08/5/2014 DW-1 Monitoring <1.0 <1.0 <1.0 <5.0 <1.0 <5.0 <5.0 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 NA1/21/2015 DW-1 Monitoring <1.0 <1.01.1<5.0 <1.0 <5.0 <5.0 <1.0 <1.0 <3.0 NA <100 <100 <100 <100 NA7/30/2015 DW-1 Monitoring <0.5 <0.51.46<5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA1/14/2016 DW-1 Monitoring <0.5 <0.50.705<5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA7/25/2016 DW-1 Monitoring <0.5 <0.51.14<5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA2/17/2017 DW-1 Monitoring <0.5 <0.50.534<5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 NA NA NA NA NA NA1 600 20 6 70 600 0.005 400 400 500 0.02-- 400 700 200 15-- -- -- -- -- -- -- -- -- -- ------ -- ----5,000 84,500 20,000 6,000 30,000 260,000 -- 28,500 25,000 85,500 50-- 400,000 700,000 200,000 15,000Notes:µg/L - micrograms per literLSA - Limited Site Assessment2L Standard - NCAC 2L Groundwater StandardMADEP VPH - Massachusetts Department of Environmental Protection Volatile Petroleum HydrocarbonsBold - detected valueNA - not analyzedEPA - United States Environmental Protection AgencyShaded - value exceeds the 2L StandardGCL - gross contamination levelTF - tank fieldIMAC - NCAC Interim Maximum Allowable ConcentrationVOC - volatile organic compoundNC - North Carolina*MW 3 Dewater samples collected from the piping to the tank field. The UST Closure sample collected from MW-3 was collected via bailer after dewatering activities had ceasedDW-1 Southeast of TFGCL (µg/L)2L Standard (µg/L)IMAC (µg/L)AECOMPage 4 of 4 Table 5-3Summary of Soil Sampling Results7-Eleven Store No. 19847Kill Devil Hills, NCIncident Number: 38285 Facility ID #: 0-011788 Revision Date: 03/23/2017Sample IDDate CollectedSource AreaSample Depth (ft bgs)Incident Phase TPH-GROSB-01 (3.5-4) 4/10/2012 South of Tank 2 3.5-40.37<0.241.2<0.2412 2.3 0.96<2.411 6.2<0.2419 73 16 24 100NA NA NA NA1,000SB-02 (3-3.5) 4/10/2012 North of Tank 2 3-3.56.4<2.46.8<2.4170 23 4.9<2453 74<2.4270 420 82 140 820NA NA NA NA10,000D-1 2/5/2013 Dispenser 1 2.5 ft <0.00100.0013<0.0010 <0.00100.011 0.0022<0.0010 <0.00100.024 0.0059 0.0029 0.0087 0.047 0.014 0.013 0.082NA NA NA NA < 5D-2 2/5/2013 Dispenser 2 2.5 ft <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0050 <0.0010 <0.0010 <0.0050 <0.0010 <0.0010 <0.0010 <0.0030 NA NA NA NA < 4.3PL-1 2/7/2013 Product Line 2.5 ft <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.010 <0.0050 <0.0010 <0.0010 <0.0050 <0.0010 <0.0010<0.0010 <0.0030 NA NA NA NA <4.6PL-2 2/7/2013 Product Line 2.5 ft <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.010 <0.0050 <0.0010 <0.0010 <0.0050 <0.0010 <0.0010<0.0010 <0.0030 NA NA NA NA <4.9PL-3 2/7/2013 Product Line 2.5 ft <0.480.91<0.48 <0.481.6 0.53<0.48 <4.84.4 2.3<0.48 <2.418 4.1 5.5 8.9NA NA NA NA180PRSW-1 2/6/2013 2.5 ft <1.79.3 3.9<1.770 10 2.4 21 38 37<1.757 240 52 73 400NA NA NA NA3,400PRSW-2 2/6/2013 2.5 ft <0.8911 4.1<0.8952 12 2.1 31 29 43<0.89 <4.4360 60 78 260NA NA NA NA4,200PRSW-3 2/6/2013 2.5 ft <2.314 6.2<2.396 18 3.6 35 54 65<2.3 <11370 78 110 480NA NA NA NA5,800PRSW-4 2/6/2013 2.5 ft <2.06.9 3<2.05.8 6.1<2.0 <20 <1025<2.0 <10140 25 45 21NA NA NA NA4,000PRSE-1 2/6/2013 2.5 ft <2.210 6.1<2.232 10 3.3<2266 26<2.230 400 91 130 430NA NA NA NA4,300PRSE-2 2/6/2013 2.5 ft <9.516<9.5 <9.555 14<9.5 <9571 45<9.5 <48430 92 130 510NA NA NA NA4,600PRSE-3 2/6/2013 2.5 ft <8.89.2<8.8 <8.845 9.1<8.8 <88 <4433<8.8 <44220 46 70 280NA NA NA NA2,900PRSE-4 2/6/2013 2.5 ft <9.617<9.6 <9.6110 19<9.6 <9662 69<9.6100 440 88 140 650NA NA NA NA4,900PRSN-1 2/6/2013 2.5 ft <0.048 <0.048 <0.048 <0.048 <0.048 <0.048 <0.048 <0.480.25<0.048 <0.048 <0.240.16 0.065 0.051<0.14 NA NA NA NA <4.8PRSN-2 2/6/2013 2.5 ft <4.68.2<4.629 44 8.2<4.6 <4632 30<4.642 200 41 60 260NA NA NA NA2,600PRSN-3 2/6/2013 2.5 ft <0.471.3 0.51<0.472.2 0.76<0.47 <4.76.2 2.8<0.47 <2.425 5.6 7.6 16NA NA NA NA1,800PRSN-4 2/6/2013 2.5 ft <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.010 <0.0050 <0.0010 <0.0010 <0.00500.002<0.0010 <0.0010 <0.0030 NA NA NA NA <4.8PRSS-1 2/6/2013 2.5 ft <0.046 <0.046 <0.046 <0.046 <0.046 <0.046 <0.046 <0.460.55<0.046 <0.046 <0.230.28 0.16 0.12<0.14 NA NA NA NA <4.6PRSS-2 2/6/2013 2.5 ft <4.812 4.8<4.850 10<4.8 <4841 35<4.842 280 58 89 360NA NA NA NA4,000PRSS-3 2/6/2013 2.5 ft <2.26 2.4<2.226 4.8<2.2 <2220 18<2.225 140 31 42 190NA NA NA NA2,300PRSS-4 2/6/2013 2.5 ft6.6 16 5.8 56 140 18 3.6<9.255 64<0.92310 430 88 120 920NA NA NA NA8,800OEN 2/7/2013 North of Tank Field 2.5 ft <1.09.2 3.6<1.026 6.8 2.5<106.8 2.5<1.0 <5.127 44 62 160 920 2001500 840NAOES 2/7/2013 South of Tank Field 2.5 ft <0.100.63 0.18<0.100.39 0.19 0.12<1.04.7 0.83<0.10 <0.509.2 2.6 2.6 3.3 35<5.087 52NAOEW 2/7/2013 West of Tank Field 2.5 ft <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.010 <0.0051 <0.0010 <0.0010 <0.0051 <0.0010 <0.0010 <0.0010 <0.0031 <4.8 <4.8 <4.8 <4.8 NAOEE 2/12/2012 East of Tank Field 2.57.4 21 9.1<4.8120 21 18<4873 75<4.8280 600 120 190 1000 28001300 2700 1200NAMW-2R 7/30/2013 North of Tank Field 3-3.5 ft CSA <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.012 <0.0062 <0.0012 <0.0012 <0.0062<0.0012 <0.0012 <0.0012 <0.0037 <4.2 <4.2 <4.2 <4.2 NAMW-5 7/30/2013Southeast of Tank Field3-3.5 ft CSA <0.0013 <0.0013 <0.0013 <0.0013 <0.0013 <0.0013 <0.0013 <0.013 <0.0064 <0.0013 <0.0013 <0.0064 <0.0013 <0.0013 <0.0013 <0.0038 <6.4 <6.4 <6.4 <6.4 NAMW-6 7/30/2013 South of Tank Field 3-3.5 ft CSA <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.0012 <0.012 <0.0060 <0.0012 <0.0012 <0.0060 <0.0012 <0.0012 <0.0012 <0.0036 <5.9 <5.9 <5.9 <5.9 NA0.0056 4.3 3.3 3.4 4.9 1.7 0.12 16 0.16 1.7 1.5 4.3 8.5 -- 8.3 4.6 -- 68 540 31 --18 626 626 626 1,560 1,560 100 9,385 313 626 3128 1,200 782 -- 782 3,129 -- 939 1,500 469 --164 16,350 16,350 16,350 40,000 40,000 4,000 245,280 8,176 16,350 81,760 32,000 20,440 -- 20,440 81,760 -- 24,528 40,000 12,264 --Notes:Bold - detected valueRed - value exceeds the residential MSCC EPA - Environmental Protection Agency Results reported in milligrams-per-kilogram (mg/kg)ft bgs - feet below ground surface Shaded - value exceeds Soil to Groundwater MSCCGRO - Gasoline Range Organics TPH - Total Petroleum Hydrocarbonsmg/kg - milligrams per kilogram UST - Underground Storage TankMSCC - maximum soil contaminant concentration VOC - volatile organic compoundNC ‐ North CarolinaSoil to Groundwater MSCC (mg/kg)C5-C8 AliphaticsC9-C12 Aliphatics* C9-C10 Aromatics **n-Butylbenzenesec-Butylbenzenep-Isopropyltoluenen-Propylbenzene1,2,3-TrimethylbenzeneStyrenetert-ButylbenzeneUST Closure: In-place abandonment of UST #2UST Closure: Removal of site USTsWest of Tank FieldEast of Tank FieldResidential MSCC (mg/kg)Industrial/Commercial MSCC (mg/kg)1,3,5-TrimethylbenzeneXylenes, totalVolatile Petroleum Hydrocarbons1,2,4-Trimethylbenzene2-Butanone (MEK)North of Tank FieldSouth of Tank FieldOver-excavationAnalytical Method (e.g. VOCs by EPA 8260)Contaminant of ConcernBenzeneEthylbenzeneNaphthaleneMADEP VPHGRO by 8015IsopropylbenzeneTolueneVOCs by EPA Method 8260AECOM AECOM Environment 7-Eleven #19847 Groundwater Monitoring Report March 2017 Figures Site Location Copyright:© 2013 National Geographic Society, i-cubed Map Location March 2017 60338486 5-5.18 Site Location Map1610 S. Croatan HighwayKill Devil Hills, NC 27948 Figure 1-1 AECOM North Carolina, Inc.1600 Perimeter Park Drive, Suite 400Morrisville, NC 27560Phone: (919) 461-1100Fax: (919) 461-1325Web: http://www.aecom.com 0 2,000 4,000Feet ¦NC VA SCGA KY TN WV MD Kill Devil Hills, NC USGS Topographic Quadrangle (1984) 7-Eleven #19847 PW-1 PW-1 S.Cr o at anHi g hway S.Memo ri a l Boul ev ar dWri ght s v ill eBoul e v ar d C arolynDrive1620 S. Memorial Blvd. 1617 Wrightsville Blvd. _______________ Figure: 3-1 PRIVATE WELL LOCATION MAP Project No.: 60338486 Kell Devil Hills, North Carolina 1610 S. Croatan Highway7-Eleven Store No. 19847 Date: 03-24-2017 LEGEND PRIVATE WELL LOCATION NOTES: 1. Properties with a well(s), as determined by the well survey responces, are indicated with a blue PW symbol.The numbers correspond to those on Table 3-3. The approximate well locations are shown, based on sitereconnaissance in February 2013. 2. Map aerial background obtained from Google Maps, 2016. AECOM Environment 7-Eleven #19847 Groundwater Monitoring Report March 2017 Appendix A. Notice of Regulatory Requirements AECOM Environment 7-Eleven #19847 Groundwater Monitoring Report March 2017 Appendix B. Laboratory Analytical Results ANALYTICAL REPORT TestAmerica Laboratories, Inc. TestAmerica Nashville 2960 Foster Creighton Drive Nashville, TN 37204 Tel: (615)726-0177 TestAmerica Job ID: 490-122245-1 TestAmerica SDG: 1610 South Croatan Hwy, Kill Devil Hills, NC Client Project/Site: 19847.KDH.EL (NC) For: AECOM Technical Services Inc. 701 Corporate Center Drive Suite 475 Raleigh, North Carolina 27607 Attn: Ms. Michelle Friedman Authorized for release by: 2/27/2017 10:16:47 AM Sherry Salomon, Manager of Project Management Assistants (615)301-5033 sherry.salomon@testamericainc.com The test results in this report meet all 2003 NELAC and 2009 TNI requirements for accredited parameters, exceptions are noted in this report. This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Results relate only to the items tested and the sample(s) as received by the laboratory. 1 2 3 4 5 6 7 8 9 10 11 12 13 Table of Contents Client: AECOM Technical Services Inc. Project/Site: 19847.KDH.EL (NC) TestAmerica Job ID: 490-122245-1 SDG: 1610 South Croatan Hwy, Kill Devil Hills, NC Page 2 of 50 TestAmerica Nashville2/27/2017 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 1 2 3 4 5 6 7 8 9 10 11 12 13 Sample Summary TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID Client Sample ID ReceivedCollectedMatrix 490-122245-1 MW-2R Water 02/17/17 10:20 02/18/17 08:50 490-122245-2 MW-3R Water 02/17/17 10:50 02/18/17 08:50 490-122245-3 MW-4 Water 02/17/17 10:10 02/18/17 08:50 490-122245-4 MW-5 Water 02/17/17 11:10 02/18/17 08:50 490-122245-5 MW-6 Water 02/17/17 09:50 02/18/17 08:50 490-122245-6 MW-7 Water 02/17/17 08:15 02/18/17 08:50 490-122245-7 MW-8 Water 02/17/17 08:40 02/18/17 08:50 490-122245-8 MW-9 Water 02/17/17 09:00 02/18/17 08:50 490-122245-9 MW-10 Water 02/17/17 09:30 02/18/17 08:50 490-122245-10 DW-1 Water 02/17/17 11:05 02/18/17 08:50 TestAmerica Nashville Page 3 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Case Narrative Client: AECOM Technical Services Inc.TestAmerica Job ID: 490-122245-1 Project/Site: 19847.KDH.EL (NC)SDG: 1610 South Croatan Hwy, Kill Devil Hills, NC Job ID: 490-122245-1 Laboratory: TestAmerica Nashville Narrative Job Narrative 490-122245-1 Comments No additional comments. Receipt The samples were received on 2/18/2017 at 8:50 AM; the samples arrived in good condition, properly preserved and, where required, on ice. The temperature of the cooler at receipt was 4.2º C. Receipt Exceptions Two VOA vials for the following sample were received broken: MW-2R (490-122245-1). One VOA vial for the following sample was received broken: DW-1 (490-122245-10). GC/MS VOA Method(s) SM6200-B: The %RPD of the laboratory control sample (LCS) and laboratory control standard duplicate (LCSD) for analytical batch analytical batch 490-410127 recovered outside control limits for the following analyte: 2-Chlorotoluene. The individual LCS/LCSD analyte recoveries, however, were within acceptance criteria. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. VOA Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. TestAmerica NashvillePage 4 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Definitions/Glossary TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Qualifiers GC/MS VOA Qualifier Description *RPD of the LCS and LCSD exceeds the control limits Qualifier F2 MS/MSD RPD exceeds control limits Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CNF Contains no Free Liquid DER Duplicate error ratio (normalized absolute difference) Dil Fac Dilution Factor DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision level concentration MDA Minimum detectable activity EDL Estimated Detection Limit MDC Minimum detectable concentration MDL Method Detection Limit ML Minimum Level (Dioxin) NC Not Calculated ND Not detected at the reporting limit (or MDL or EDL if shown) PQL Practical Quantitation Limit QC Quality Control RER Relative error ratio RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TestAmerica Nashville Page 5 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-1Client Sample ID: MW-2R Matrix: WaterDate Collected: 02/17/17 10:20 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds RL MDL Benzene ND 0.500 ug/L 02/23/17 17:59 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 17:59 1BromobenzeneND 0.500 ug/L 02/23/17 17:59 1BromochloromethaneND 0.500 ug/L 02/23/17 17:59 1BromodichloromethaneND 0.500 ug/L 02/23/17 17:59 1BromoformND 0.500 ug/L 02/23/17 17:59 1BromomethaneND 0.500 ug/L 02/23/17 17:59 1Carbon tetrachloride ND 0.500 ug/L 02/23/17 17:59 1ChlorobenzeneND 0.500 ug/L 02/23/17 17:59 1ChloroethaneND 0.500 ug/L 02/23/17 17:59 1ChloroformND 0.500 ug/L 02/23/17 17:59 1ChloromethaneND 0.500 ug/L 02/23/17 17:59 12-Chlorotoluene ND * 0.500 ug/L 02/23/17 17:59 14-Chlorotoluene ND 0.500 ug/L 02/23/17 17:59 1cis-1,2-Dichloroethene ND 0.500 ug/L 02/23/17 17:59 1cis-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 17:59 1DibromochloromethaneND 5.00 ug/L 02/23/17 17:59 11,2-Dibromo-3-Chloropropane ND 0.500 ug/L 02/23/17 17:59 11,2-Dibromoethane (EDB)ND 0.500 ug/L 02/23/17 17:59 1DibromomethaneND 0.500 ug/L 02/23/17 17:59 11,2-Dichlorobenzene ND 0.500 ug/L 02/23/17 17:59 11,3-Dichlorobenzene ND 0.500 ug/L 02/23/17 17:59 11,4-Dichlorobenzene ND 0.500 ug/L 02/23/17 17:59 1DichlorodifluoromethaneND 0.500 ug/L 02/23/17 17:59 11,1-Dichloroethane ND 0.500 ug/L 02/23/17 17:59 11,2-Dichloroethane ND 0.500 ug/L 02/23/17 17:59 11,1-Dichloroethene ND 0.500 ug/L 02/23/17 17:59 11,2-Dichloropropane ND 0.500 ug/L 02/23/17 17:59 11,3-Dichloropropane ND 0.500 ug/L 02/23/17 17:59 12,2-Dichloropropane ND 0.500 ug/L 02/23/17 17:59 11,1-Dichloropropene ND 0.500 ug/L 02/23/17 17:59 1Diisopropyl ether ND 100 ug/L 02/23/17 17:59 1EthanolND 0.500 ug/L 02/23/17 17:59 1EthylbenzeneND 1.00 ug/L 02/23/17 17:59 1HexachlorobutadieneND 1.00 ug/L 02/23/17 17:59 1IsopropylbenzeneND 5.00 ug/L 02/23/17 17:59 1Methylene Chloride ND 0.500 ug/L 02/23/17 17:59 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/17 17:59 1NaphthaleneND 0.500 ug/L 02/23/17 17:59 1n-Butylbenzene ND 0.500 ug/L 02/23/17 17:59 1N-Propylbenzene ND 0.500 ug/L 02/23/17 17:59 1p-Isopropyltoluene ND 0.500 ug/L 02/23/17 17:59 1sec-Butylbenzene ND 0.500 ug/L 02/23/17 17:59 1StyreneND 0.500 ug/L 02/23/17 17:59 1tert-Butylbenzene ND 0.500 ug/L 02/23/17 17:59 11,1,1,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 17:59 11,1,2,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 17:59 1TetrachloroetheneND 0.500 ug/L 02/23/17 17:59 1TolueneND 0.500 ug/L 02/23/17 17:59 1trans-1,2-Dichloroethene ND TestAmerica Nashville Page 6 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-1Client Sample ID: MW-2R Matrix: WaterDate Collected: 02/17/17 10:20 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL trans-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 17:59 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 17:59 11,2,3-Trichlorobenzene ND 0.500 ug/L 02/23/17 17:59 11,2,4-Trichlorobenzene ND 0.500 ug/L 02/23/17 17:59 11,1,1-Trichloroethane ND 0.500 ug/L 02/23/17 17:59 11,1,2-Trichloroethane ND 0.500 ug/L 02/23/17 17:59 1TrichloroetheneND 0.500 ug/L 02/23/17 17:59 1TrichlorofluoromethaneND 0.500 ug/L 02/23/17 17:59 11,2,3-Trichloropropane ND 0.500 ug/L 02/23/17 17:59 11,2,4-Trimethylbenzene ND 0.500 ug/L 02/23/17 17:59 11,3,5-Trimethylbenzene ND 0.500 ug/L 02/23/17 17:59 1Vinyl chloride ND 1.00 ug/L 02/23/17 17:59 1Xylenes, Total ND 4-Bromofluorobenzene (Surr)105 70-130 02/23/17 17:59 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)100 02/23/17 17:59 170-130 1,2-Dichloroethane-d4 (Surr)103 02/23/17 17:59 170-130 Toluene-d8 (Surr)98 02/23/17 17:59 170-130 TestAmerica Nashville Page 7 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-2Client Sample ID: MW-3R Matrix: WaterDate Collected: 02/17/17 10:50 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds RL MDL Benzene 17.5 0.500 ug/L 02/23/17 18:26 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 18:26 1BromobenzeneND 0.500 ug/L 02/23/17 18:26 1BromochloromethaneND 0.500 ug/L 02/23/17 18:26 1BromodichloromethaneND 0.500 ug/L 02/23/17 18:26 1BromoformND 0.500 ug/L 02/23/17 18:26 1BromomethaneND 0.500 ug/L 02/23/17 18:26 1Carbon tetrachloride ND 0.500 ug/L 02/23/17 18:26 1ChlorobenzeneND 0.500 ug/L 02/23/17 18:26 1ChloroethaneND 0.500 ug/L 02/23/17 18:26 1ChloroformND 0.500 ug/L 02/23/17 18:26 1ChloromethaneND 0.500 ug/L 02/23/17 18:26 12-Chlorotoluene ND * 0.500 ug/L 02/23/17 18:26 14-Chlorotoluene ND 0.500 ug/L 02/23/17 18:26 1cis-1,2-Dichloroethene ND 0.500 ug/L 02/23/17 18:26 1cis-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 18:26 1DibromochloromethaneND 5.00 ug/L 02/23/17 18:26 11,2-Dibromo-3-Chloropropane ND 0.500 ug/L 02/23/17 18:26 11,2-Dibromoethane (EDB)ND 0.500 ug/L 02/23/17 18:26 1DibromomethaneND 0.500 ug/L 02/23/17 18:26 11,2-Dichlorobenzene ND 0.500 ug/L 02/23/17 18:26 11,3-Dichlorobenzene ND 0.500 ug/L 02/23/17 18:26 11,4-Dichlorobenzene ND 0.500 ug/L 02/23/17 18:26 1DichlorodifluoromethaneND 0.500 ug/L 02/23/17 18:26 11,1-Dichloroethane ND 0.500 ug/L 02/23/17 18:26 11,2-Dichloroethane ND 0.500 ug/L 02/23/17 18:26 11,1-Dichloroethene ND 0.500 ug/L 02/23/17 18:26 11,2-Dichloropropane ND 0.500 ug/L 02/23/17 18:26 11,3-Dichloropropane ND 0.500 ug/L 02/23/17 18:26 12,2-Dichloropropane ND 0.500 ug/L 02/23/17 18:26 11,1-Dichloropropene ND 0.500 ug/L 02/23/17 18:26 1Diisopropyl ether ND 100 ug/L 02/23/17 18:26 1EthanolND 0.500 ug/L 02/23/17 18:26 1Ethylbenzene38.4 1.00 ug/L 02/23/17 18:26 1HexachlorobutadieneND 1.00 ug/L 02/23/17 18:26 1Isopropylbenzene9.30 5.00 ug/L 02/23/17 18:26 1Methylene Chloride ND 0.500 ug/L 02/23/17 18:26 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/17 18:26 1Naphthalene53.8 0.500 ug/L 02/23/17 18:26 1n-Butylbenzene 17.0 0.500 ug/L 02/23/17 18:26 1N-Propylbenzene 35.8 0.500 ug/L 02/23/17 18:26 1p-Isopropyltoluene ND 0.500 ug/L 02/23/17 18:26 1sec-Butylbenzene 5.33 0.500 ug/L 02/23/17 18:26 1StyreneND 0.500 ug/L 02/23/17 18:26 1tert-Butylbenzene ND 0.500 ug/L 02/23/17 18:26 11,1,1,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 18:26 11,1,2,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 18:26 1TetrachloroetheneND 0.500 ug/L 02/23/17 18:26 1Toluene9.25 0.500 ug/L 02/23/17 18:26 1trans-1,2-Dichloroethene ND TestAmerica Nashville Page 8 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-2Client Sample ID: MW-3R Matrix: WaterDate Collected: 02/17/17 10:50 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL trans-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 18:26 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 18:26 11,2,3-Trichlorobenzene ND 0.500 ug/L 02/23/17 18:26 11,2,4-Trichlorobenzene ND 0.500 ug/L 02/23/17 18:26 11,1,1-Trichloroethane ND 0.500 ug/L 02/23/17 18:26 11,1,2-Trichloroethane ND 0.500 ug/L 02/23/17 18:26 1TrichloroetheneND 0.500 ug/L 02/23/17 18:26 1TrichlorofluoromethaneND 0.500 ug/L 02/23/17 18:26 11,2,3-Trichloropropane 0.801 0.500 ug/L 02/23/17 18:26 11,2,4-Trimethylbenzene 3.77 0.500 ug/L 02/23/17 18:26 11,3,5-Trimethylbenzene 1.37 0.500 ug/L 02/23/17 18:26 1Vinyl chloride ND 1.00 ug/L 02/23/17 18:26 1Xylenes, Total 20.1 4-Bromofluorobenzene (Surr)105 70-130 02/23/17 18:26 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)102 02/23/17 18:26 170-130 1,2-Dichloroethane-d4 (Surr)102 02/23/17 18:26 170-130 Toluene-d8 (Surr)93 02/23/17 18:26 170-130 TestAmerica Nashville Page 9 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-3Client Sample ID: MW-4 Matrix: WaterDate Collected: 02/17/17 10:10 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds RL MDL Benzene ND 0.500 ug/L 02/23/17 18:53 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 18:53 1BromobenzeneND 0.500 ug/L 02/23/17 18:53 1BromochloromethaneND 0.500 ug/L 02/23/17 18:53 1BromodichloromethaneND 0.500 ug/L 02/23/17 18:53 1BromoformND 0.500 ug/L 02/23/17 18:53 1BromomethaneND 0.500 ug/L 02/23/17 18:53 1Carbon tetrachloride ND 0.500 ug/L 02/23/17 18:53 1ChlorobenzeneND 0.500 ug/L 02/23/17 18:53 1ChloroethaneND 0.500 ug/L 02/23/17 18:53 1ChloroformND 0.500 ug/L 02/23/17 18:53 1ChloromethaneND 0.500 ug/L 02/23/17 18:53 12-Chlorotoluene ND * 0.500 ug/L 02/23/17 18:53 14-Chlorotoluene ND 0.500 ug/L 02/23/17 18:53 1cis-1,2-Dichloroethene ND 0.500 ug/L 02/23/17 18:53 1cis-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 18:53 1DibromochloromethaneND 5.00 ug/L 02/23/17 18:53 11,2-Dibromo-3-Chloropropane ND 0.500 ug/L 02/23/17 18:53 11,2-Dibromoethane (EDB)ND 0.500 ug/L 02/23/17 18:53 1DibromomethaneND 0.500 ug/L 02/23/17 18:53 11,2-Dichlorobenzene ND 0.500 ug/L 02/23/17 18:53 11,3-Dichlorobenzene ND 0.500 ug/L 02/23/17 18:53 11,4-Dichlorobenzene ND 0.500 ug/L 02/23/17 18:53 1DichlorodifluoromethaneND 0.500 ug/L 02/23/17 18:53 11,1-Dichloroethane ND 0.500 ug/L 02/23/17 18:53 11,2-Dichloroethane ND 0.500 ug/L 02/23/17 18:53 11,1-Dichloroethene ND 0.500 ug/L 02/23/17 18:53 11,2-Dichloropropane ND 0.500 ug/L 02/23/17 18:53 11,3-Dichloropropane ND 0.500 ug/L 02/23/17 18:53 12,2-Dichloropropane ND 0.500 ug/L 02/23/17 18:53 11,1-Dichloropropene ND 0.500 ug/L 02/23/17 18:53 1Diisopropyl ether ND 100 ug/L 02/23/17 18:53 1EthanolND 0.500 ug/L 02/23/17 18:53 1EthylbenzeneND 1.00 ug/L 02/23/17 18:53 1HexachlorobutadieneND 1.00 ug/L 02/23/17 18:53 1IsopropylbenzeneND 5.00 ug/L 02/23/17 18:53 1Methylene Chloride ND 0.500 ug/L 02/23/17 18:53 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/17 18:53 1NaphthaleneND 0.500 ug/L 02/23/17 18:53 1n-Butylbenzene ND 0.500 ug/L 02/23/17 18:53 1N-Propylbenzene ND 0.500 ug/L 02/23/17 18:53 1p-Isopropyltoluene ND 0.500 ug/L 02/23/17 18:53 1sec-Butylbenzene ND 0.500 ug/L 02/23/17 18:53 1StyreneND 0.500 ug/L 02/23/17 18:53 1tert-Butylbenzene ND 0.500 ug/L 02/23/17 18:53 11,1,1,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 18:53 11,1,2,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 18:53 1TetrachloroetheneND 0.500 ug/L 02/23/17 18:53 1TolueneND 0.500 ug/L 02/23/17 18:53 1trans-1,2-Dichloroethene ND TestAmerica Nashville Page 10 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-3Client Sample ID: MW-4 Matrix: WaterDate Collected: 02/17/17 10:10 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL trans-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 18:53 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 18:53 11,2,3-Trichlorobenzene ND 0.500 ug/L 02/23/17 18:53 11,2,4-Trichlorobenzene ND 0.500 ug/L 02/23/17 18:53 11,1,1-Trichloroethane ND 0.500 ug/L 02/23/17 18:53 11,1,2-Trichloroethane ND 0.500 ug/L 02/23/17 18:53 1TrichloroetheneND 0.500 ug/L 02/23/17 18:53 1TrichlorofluoromethaneND 0.500 ug/L 02/23/17 18:53 11,2,3-Trichloropropane ND 0.500 ug/L 02/23/17 18:53 11,2,4-Trimethylbenzene ND 0.500 ug/L 02/23/17 18:53 11,3,5-Trimethylbenzene ND 0.500 ug/L 02/23/17 18:53 1Vinyl chloride ND 1.00 ug/L 02/23/17 18:53 1Xylenes, Total ND 4-Bromofluorobenzene (Surr)102 70-130 02/23/17 18:53 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)103 02/23/17 18:53 170-130 1,2-Dichloroethane-d4 (Surr)106 02/23/17 18:53 170-130 Toluene-d8 (Surr)97 02/23/17 18:53 170-130 TestAmerica Nashville Page 11 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-4Client Sample ID: MW-5 Matrix: WaterDate Collected: 02/17/17 11:10 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds RL MDL Benzene 11.1 0.500 ug/L 02/23/17 19:19 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 19:19 1BromobenzeneND 0.500 ug/L 02/23/17 19:19 1BromochloromethaneND 0.500 ug/L 02/23/17 19:19 1BromodichloromethaneND 0.500 ug/L 02/23/17 19:19 1BromoformND 0.500 ug/L 02/23/17 19:19 1BromomethaneND 0.500 ug/L 02/23/17 19:19 1Carbon tetrachloride ND 0.500 ug/L 02/23/17 19:19 1ChlorobenzeneND 0.500 ug/L 02/23/17 19:19 1ChloroethaneND 0.500 ug/L 02/23/17 19:19 1ChloroformND 0.500 ug/L 02/23/17 19:19 1ChloromethaneND 0.500 ug/L 02/23/17 19:19 12-Chlorotoluene ND * 0.500 ug/L 02/23/17 19:19 14-Chlorotoluene ND 0.500 ug/L 02/23/17 19:19 1cis-1,2-Dichloroethene ND 0.500 ug/L 02/23/17 19:19 1cis-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 19:19 1DibromochloromethaneND 5.00 ug/L 02/23/17 19:19 11,2-Dibromo-3-Chloropropane ND 0.500 ug/L 02/23/17 19:19 11,2-Dibromoethane (EDB)ND 0.500 ug/L 02/23/17 19:19 1DibromomethaneND 0.500 ug/L 02/23/17 19:19 11,2-Dichlorobenzene ND 0.500 ug/L 02/23/17 19:19 11,3-Dichlorobenzene ND 0.500 ug/L 02/23/17 19:19 11,4-Dichlorobenzene ND 0.500 ug/L 02/23/17 19:19 1DichlorodifluoromethaneND 0.500 ug/L 02/23/17 19:19 11,1-Dichloroethane ND 0.500 ug/L 02/23/17 19:19 11,2-Dichloroethane ND 0.500 ug/L 02/23/17 19:19 11,1-Dichloroethene ND 0.500 ug/L 02/23/17 19:19 11,2-Dichloropropane ND 0.500 ug/L 02/23/17 19:19 11,3-Dichloropropane ND 0.500 ug/L 02/23/17 19:19 12,2-Dichloropropane ND 0.500 ug/L 02/23/17 19:19 11,1-Dichloropropene ND 0.500 ug/L 02/23/17 19:19 1Diisopropyl ether ND 100 ug/L 02/23/17 19:19 1EthanolND 5.00 ug/L 02/24/17 08:34 10Ethylbenzene336 1.00 ug/L 02/23/17 19:19 1HexachlorobutadieneND 1.00 ug/L 02/23/17 19:19 1Isopropylbenzene25.7 5.00 ug/L 02/23/17 19:19 1Methylene Chloride ND 0.500 ug/L 02/23/17 19:19 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/17 19:19 1Naphthalene191 0.500 ug/L 02/23/17 19:19 1n-Butylbenzene 15.1 0.500 ug/L 02/23/17 19:19 1N-Propylbenzene 70.8 0.500 ug/L 02/23/17 19:19 1p-Isopropyltoluene 1.84 0.500 ug/L 02/23/17 19:19 1sec-Butylbenzene 6.29 0.500 ug/L 02/23/17 19:19 1StyreneND 0.500 ug/L 02/23/17 19:19 1tert-Butylbenzene ND 0.500 ug/L 02/23/17 19:19 11,1,1,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 19:19 11,1,2,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 19:19 1TetrachloroetheneND 0.500 ug/L 02/23/17 19:19 1Toluene53.4 0.500 ug/L 02/23/17 19:19 1trans-1,2-Dichloroethene ND TestAmerica Nashville Page 12 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-4Client Sample ID: MW-5 Matrix: WaterDate Collected: 02/17/17 11:10 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL trans-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 19:19 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 19:19 11,2,3-Trichlorobenzene ND 0.500 ug/L 02/23/17 19:19 11,2,4-Trichlorobenzene ND 0.500 ug/L 02/23/17 19:19 11,1,1-Trichloroethane ND 0.500 ug/L 02/23/17 19:19 11,1,2-Trichloroethane ND 0.500 ug/L 02/23/17 19:19 1TrichloroetheneND 0.500 ug/L 02/23/17 19:19 1TrichlorofluoromethaneND 0.500 ug/L 02/23/17 19:19 11,2,3-Trichloropropane ND 0.500 ug/L 02/23/17 19:19 11,2,4-Trimethylbenzene 188 0.500 ug/L 02/23/17 19:19 11,3,5-Trimethylbenzene 64.6 0.500 ug/L 02/23/17 19:19 1Vinyl chloride ND 10.0 ug/L 02/24/17 08:34 10Xylenes, Total 497 4-Bromofluorobenzene (Surr)102 70-130 02/23/17 19:19 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 4-Bromofluorobenzene (Surr)106 02/24/17 08:34 1070-130 Dibromofluoromethane (Surr)102 02/23/17 19:19 170-130 Dibromofluoromethane (Surr)101 02/24/17 08:34 1070-130 1,2-Dichloroethane-d4 (Surr)100 02/23/17 19:19 170-130 1,2-Dichloroethane-d4 (Surr)103 02/24/17 08:34 1070-130 Toluene-d8 (Surr)94 02/23/17 19:19 170-130 Toluene-d8 (Surr)95 02/24/17 08:34 1070-130 TestAmerica Nashville Page 13 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-5Client Sample ID: MW-6 Matrix: WaterDate Collected: 02/17/17 09:50 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds RL MDL Benzene ND 0.500 ug/L 02/23/17 19:46 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 19:46 1BromobenzeneND 0.500 ug/L 02/23/17 19:46 1BromochloromethaneND 0.500 ug/L 02/23/17 19:46 1BromodichloromethaneND 0.500 ug/L 02/23/17 19:46 1BromoformND 0.500 ug/L 02/23/17 19:46 1BromomethaneND 0.500 ug/L 02/23/17 19:46 1Carbon tetrachloride ND 0.500 ug/L 02/23/17 19:46 1ChlorobenzeneND 0.500 ug/L 02/23/17 19:46 1ChloroethaneND 0.500 ug/L 02/23/17 19:46 1ChloroformND 0.500 ug/L 02/23/17 19:46 1ChloromethaneND 0.500 ug/L 02/23/17 19:46 12-Chlorotoluene ND * 0.500 ug/L 02/23/17 19:46 14-Chlorotoluene ND 0.500 ug/L 02/23/17 19:46 1cis-1,2-Dichloroethene ND 0.500 ug/L 02/23/17 19:46 1cis-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 19:46 1DibromochloromethaneND 5.00 ug/L 02/23/17 19:46 11,2-Dibromo-3-Chloropropane ND 0.500 ug/L 02/23/17 19:46 11,2-Dibromoethane (EDB)ND 0.500 ug/L 02/23/17 19:46 1DibromomethaneND 0.500 ug/L 02/23/17 19:46 11,2-Dichlorobenzene ND 0.500 ug/L 02/23/17 19:46 11,3-Dichlorobenzene ND 0.500 ug/L 02/23/17 19:46 11,4-Dichlorobenzene ND 0.500 ug/L 02/23/17 19:46 1DichlorodifluoromethaneND 0.500 ug/L 02/23/17 19:46 11,1-Dichloroethane ND 0.500 ug/L 02/23/17 19:46 11,2-Dichloroethane ND 0.500 ug/L 02/23/17 19:46 11,1-Dichloroethene ND 0.500 ug/L 02/23/17 19:46 11,2-Dichloropropane ND 0.500 ug/L 02/23/17 19:46 11,3-Dichloropropane ND 0.500 ug/L 02/23/17 19:46 12,2-Dichloropropane ND 0.500 ug/L 02/23/17 19:46 11,1-Dichloropropene ND 0.500 ug/L 02/23/17 19:46 1Diisopropyl ether ND 100 ug/L 02/23/17 19:46 1EthanolNDF2 0.500 ug/L 02/23/17 19:46 1EthylbenzeneND 1.00 ug/L 02/23/17 19:46 1HexachlorobutadieneND 1.00 ug/L 02/23/17 19:46 1IsopropylbenzeneND 5.00 ug/L 02/23/17 19:46 1Methylene Chloride ND 0.500 ug/L 02/23/17 19:46 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/17 19:46 1NaphthaleneND 0.500 ug/L 02/23/17 19:46 1n-Butylbenzene ND 0.500 ug/L 02/23/17 19:46 1N-Propylbenzene ND 0.500 ug/L 02/23/17 19:46 1p-Isopropyltoluene ND 0.500 ug/L 02/23/17 19:46 1sec-Butylbenzene ND 0.500 ug/L 02/23/17 19:46 1StyreneND 0.500 ug/L 02/23/17 19:46 1tert-Butylbenzene ND 0.500 ug/L 02/23/17 19:46 11,1,1,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 19:46 11,1,2,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 19:46 1TetrachloroetheneND 0.500 ug/L 02/23/17 19:46 1TolueneND 0.500 ug/L 02/23/17 19:46 1trans-1,2-Dichloroethene ND TestAmerica Nashville Page 14 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-5Client Sample ID: MW-6 Matrix: WaterDate Collected: 02/17/17 09:50 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL trans-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 19:46 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 19:46 11,2,3-Trichlorobenzene ND 0.500 ug/L 02/23/17 19:46 11,2,4-Trichlorobenzene ND 0.500 ug/L 02/23/17 19:46 11,1,1-Trichloroethane ND 0.500 ug/L 02/23/17 19:46 11,1,2-Trichloroethane ND 0.500 ug/L 02/23/17 19:46 1TrichloroetheneND 0.500 ug/L 02/23/17 19:46 1TrichlorofluoromethaneND 0.500 ug/L 02/23/17 19:46 11,2,3-Trichloropropane ND 0.500 ug/L 02/23/17 19:46 11,2,4-Trimethylbenzene ND 0.500 ug/L 02/23/17 19:46 11,3,5-Trimethylbenzene ND 0.500 ug/L 02/23/17 19:46 1Vinyl chloride ND 1.00 ug/L 02/23/17 19:46 1Xylenes, Total ND 4-Bromofluorobenzene (Surr)105 70-130 02/23/17 19:46 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)102 02/23/17 19:46 170-130 1,2-Dichloroethane-d4 (Surr)103 02/23/17 19:46 170-130 Toluene-d8 (Surr)98 02/23/17 19:46 170-130 TestAmerica Nashville Page 15 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-6Client Sample ID: MW-7 Matrix: WaterDate Collected: 02/17/17 08:15 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds RL MDL Benzene ND 0.500 ug/L 02/23/17 20:39 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 20:39 1BromobenzeneND 0.500 ug/L 02/23/17 20:39 1BromochloromethaneND 0.500 ug/L 02/23/17 20:39 1BromodichloromethaneND 0.500 ug/L 02/23/17 20:39 1BromoformND 0.500 ug/L 02/23/17 20:39 1BromomethaneND 0.500 ug/L 02/23/17 20:39 1Carbon tetrachloride ND 0.500 ug/L 02/23/17 20:39 1ChlorobenzeneND 0.500 ug/L 02/23/17 20:39 1ChloroethaneND 0.500 ug/L 02/23/17 20:39 1Chloroform0.946 0.500 ug/L 02/23/17 20:39 1ChloromethaneND 0.500 ug/L 02/23/17 20:39 12-Chlorotoluene ND * 0.500 ug/L 02/23/17 20:39 14-Chlorotoluene ND 0.500 ug/L 02/23/17 20:39 1cis-1,2-Dichloroethene ND 0.500 ug/L 02/23/17 20:39 1cis-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 20:39 1DibromochloromethaneND 5.00 ug/L 02/23/17 20:39 11,2-Dibromo-3-Chloropropane ND 0.500 ug/L 02/23/17 20:39 11,2-Dibromoethane (EDB)ND 0.500 ug/L 02/23/17 20:39 1DibromomethaneND 0.500 ug/L 02/23/17 20:39 11,2-Dichlorobenzene ND 0.500 ug/L 02/23/17 20:39 11,3-Dichlorobenzene ND 0.500 ug/L 02/23/17 20:39 11,4-Dichlorobenzene ND 0.500 ug/L 02/23/17 20:39 1DichlorodifluoromethaneND 0.500 ug/L 02/23/17 20:39 11,1-Dichloroethane ND 0.500 ug/L 02/23/17 20:39 11,2-Dichloroethane ND 0.500 ug/L 02/23/17 20:39 11,1-Dichloroethene ND 0.500 ug/L 02/23/17 20:39 11,2-Dichloropropane ND 0.500 ug/L 02/23/17 20:39 11,3-Dichloropropane ND 0.500 ug/L 02/23/17 20:39 12,2-Dichloropropane ND 0.500 ug/L 02/23/17 20:39 11,1-Dichloropropene ND 0.500 ug/L 02/23/17 20:39 1Diisopropyl ether ND 100 ug/L 02/23/17 20:39 1EthanolND 0.500 ug/L 02/23/17 20:39 1EthylbenzeneND 1.00 ug/L 02/23/17 20:39 1HexachlorobutadieneND 1.00 ug/L 02/23/17 20:39 1IsopropylbenzeneND 5.00 ug/L 02/23/17 20:39 1Methylene Chloride ND 0.500 ug/L 02/23/17 20:39 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/17 20:39 1NaphthaleneND 0.500 ug/L 02/23/17 20:39 1n-Butylbenzene ND 0.500 ug/L 02/23/17 20:39 1N-Propylbenzene ND 0.500 ug/L 02/23/17 20:39 1p-Isopropyltoluene ND 0.500 ug/L 02/23/17 20:39 1sec-Butylbenzene ND 0.500 ug/L 02/23/17 20:39 1StyreneND 0.500 ug/L 02/23/17 20:39 1tert-Butylbenzene ND 0.500 ug/L 02/23/17 20:39 11,1,1,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 20:39 11,1,2,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 20:39 1TetrachloroetheneND 0.500 ug/L 02/23/17 20:39 1TolueneND 0.500 ug/L 02/23/17 20:39 1trans-1,2-Dichloroethene ND TestAmerica Nashville Page 16 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-6Client Sample ID: MW-7 Matrix: WaterDate Collected: 02/17/17 08:15 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL trans-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 20:39 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 20:39 11,2,3-Trichlorobenzene ND 0.500 ug/L 02/23/17 20:39 11,2,4-Trichlorobenzene ND 0.500 ug/L 02/23/17 20:39 11,1,1-Trichloroethane ND 0.500 ug/L 02/23/17 20:39 11,1,2-Trichloroethane ND 0.500 ug/L 02/23/17 20:39 1TrichloroetheneND 0.500 ug/L 02/23/17 20:39 1TrichlorofluoromethaneND 0.500 ug/L 02/23/17 20:39 11,2,3-Trichloropropane ND 0.500 ug/L 02/23/17 20:39 11,2,4-Trimethylbenzene ND 0.500 ug/L 02/23/17 20:39 11,3,5-Trimethylbenzene ND 0.500 ug/L 02/23/17 20:39 1Vinyl chloride ND 1.00 ug/L 02/23/17 20:39 1Xylenes, Total ND 4-Bromofluorobenzene (Surr)101 70-130 02/23/17 20:39 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)103 02/23/17 20:39 170-130 1,2-Dichloroethane-d4 (Surr)104 02/23/17 20:39 170-130 Toluene-d8 (Surr)99 02/23/17 20:39 170-130 TestAmerica Nashville Page 17 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-7Client Sample ID: MW-8 Matrix: WaterDate Collected: 02/17/17 08:40 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds RL MDL Benzene ND 0.500 ug/L 02/24/17 01:32 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/24/17 01:32 1BromobenzeneND 0.500 ug/L 02/24/17 01:32 1BromochloromethaneND 0.500 ug/L 02/24/17 01:32 1BromodichloromethaneND 0.500 ug/L 02/24/17 01:32 1BromoformND 0.500 ug/L 02/24/17 01:32 1BromomethaneND 0.500 ug/L 02/24/17 01:32 1Carbon tetrachloride ND 0.500 ug/L 02/24/17 01:32 1ChlorobenzeneND 0.500 ug/L 02/24/17 01:32 1ChloroethaneND 0.500 ug/L 02/24/17 01:32 1ChloroformND 0.500 ug/L 02/24/17 01:32 1ChloromethaneND 0.500 ug/L 02/24/17 01:32 12-Chlorotoluene ND 0.500 ug/L 02/24/17 01:32 14-Chlorotoluene ND 0.500 ug/L 02/24/17 01:32 1cis-1,2-Dichloroethene ND 0.500 ug/L 02/24/17 01:32 1cis-1,3-Dichloropropene ND 0.500 ug/L 02/24/17 01:32 1DibromochloromethaneND 5.00 ug/L 02/24/17 01:32 11,2-Dibromo-3-Chloropropane ND 0.500 ug/L 02/24/17 01:32 11,2-Dibromoethane (EDB)ND 0.500 ug/L 02/24/17 01:32 1DibromomethaneND 0.500 ug/L 02/24/17 01:32 11,2-Dichlorobenzene ND 0.500 ug/L 02/24/17 01:32 11,3-Dichlorobenzene ND 0.500 ug/L 02/24/17 01:32 11,4-Dichlorobenzene ND 0.500 ug/L 02/24/17 01:32 1DichlorodifluoromethaneND 0.500 ug/L 02/24/17 01:32 11,1-Dichloroethane ND 0.500 ug/L 02/24/17 01:32 11,2-Dichloroethane ND 0.500 ug/L 02/24/17 01:32 11,1-Dichloroethene ND 0.500 ug/L 02/24/17 01:32 11,2-Dichloropropane ND 0.500 ug/L 02/24/17 01:32 11,3-Dichloropropane ND 0.500 ug/L 02/24/17 01:32 12,2-Dichloropropane ND 0.500 ug/L 02/24/17 01:32 11,1-Dichloropropene ND 0.500 ug/L 02/24/17 01:32 1Diisopropyl ether ND 100 ug/L 02/24/17 01:32 1EthanolND 0.500 ug/L 02/24/17 01:32 1Ethylbenzene0.998 1.00 ug/L 02/24/17 01:32 1HexachlorobutadieneND 1.00 ug/L 02/24/17 01:32 1IsopropylbenzeneND 5.00 ug/L 02/24/17 01:32 1Methylene Chloride ND 0.500 ug/L 02/24/17 01:32 1Methyl tert-butyl ether ND 5.00 ug/L 02/24/17 01:32 1NaphthaleneND 0.500 ug/L 02/24/17 01:32 1n-Butylbenzene ND 0.500 ug/L 02/24/17 01:32 1N-Propylbenzene 0.643 0.500 ug/L 02/24/17 01:32 1p-Isopropyltoluene ND 0.500 ug/L 02/24/17 01:32 1sec-Butylbenzene ND 0.500 ug/L 02/24/17 01:32 1StyreneND 0.500 ug/L 02/24/17 01:32 1tert-Butylbenzene ND 0.500 ug/L 02/24/17 01:32 11,1,1,2-Tetrachloroethane ND 0.500 ug/L 02/24/17 01:32 11,1,2,2-Tetrachloroethane ND 0.500 ug/L 02/24/17 01:32 1TetrachloroetheneND 0.500 ug/L 02/24/17 01:32 1TolueneND 0.500 ug/L 02/24/17 01:32 1trans-1,2-Dichloroethene ND TestAmerica Nashville Page 18 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-7Client Sample ID: MW-8 Matrix: WaterDate Collected: 02/17/17 08:40 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL trans-1,3-Dichloropropene ND 0.500 ug/L 02/24/17 01:32 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/24/17 01:32 11,2,3-Trichlorobenzene ND 0.500 ug/L 02/24/17 01:32 11,2,4-Trichlorobenzene ND 0.500 ug/L 02/24/17 01:32 11,1,1-Trichloroethane ND 0.500 ug/L 02/24/17 01:32 11,1,2-Trichloroethane ND 0.500 ug/L 02/24/17 01:32 1TrichloroetheneND 0.500 ug/L 02/24/17 01:32 1TrichlorofluoromethaneND 0.500 ug/L 02/24/17 01:32 11,2,3-Trichloropropane ND 0.500 ug/L 02/24/17 01:32 11,2,4-Trimethylbenzene 1.41 0.500 ug/L 02/24/17 01:32 11,3,5-Trimethylbenzene 0.693 0.500 ug/L 02/24/17 01:32 1Vinyl chloride ND 1.00 ug/L 02/24/17 01:32 1Xylenes, Total 1.05 4-Bromofluorobenzene (Surr)103 70-130 02/24/17 01:32 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)99 02/24/17 01:32 170-130 1,2-Dichloroethane-d4 (Surr)105 02/24/17 01:32 170-130 Toluene-d8 (Surr)102 02/24/17 01:32 170-130 TestAmerica Nashville Page 19 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-8Client Sample ID: MW-9 Matrix: WaterDate Collected: 02/17/17 09:00 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds RL MDL Benzene ND 0.500 ug/L 02/24/17 01:58 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/24/17 01:58 1BromobenzeneND 0.500 ug/L 02/24/17 01:58 1BromochloromethaneND 0.500 ug/L 02/24/17 01:58 1BromodichloromethaneND 0.500 ug/L 02/24/17 01:58 1BromoformND 0.500 ug/L 02/24/17 01:58 1BromomethaneND 0.500 ug/L 02/24/17 01:58 1Carbon tetrachloride ND 0.500 ug/L 02/24/17 01:58 1ChlorobenzeneND 0.500 ug/L 02/24/17 01:58 1ChloroethaneND 0.500 ug/L 02/24/17 01:58 1ChloroformND 0.500 ug/L 02/24/17 01:58 1ChloromethaneND 0.500 ug/L 02/24/17 01:58 12-Chlorotoluene ND 0.500 ug/L 02/24/17 01:58 14-Chlorotoluene ND 0.500 ug/L 02/24/17 01:58 1cis-1,2-Dichloroethene ND 0.500 ug/L 02/24/17 01:58 1cis-1,3-Dichloropropene ND 0.500 ug/L 02/24/17 01:58 1DibromochloromethaneND 5.00 ug/L 02/24/17 01:58 11,2-Dibromo-3-Chloropropane ND 0.500 ug/L 02/24/17 01:58 11,2-Dibromoethane (EDB)ND 0.500 ug/L 02/24/17 01:58 1DibromomethaneND 0.500 ug/L 02/24/17 01:58 11,2-Dichlorobenzene ND 0.500 ug/L 02/24/17 01:58 11,3-Dichlorobenzene ND 0.500 ug/L 02/24/17 01:58 11,4-Dichlorobenzene ND 0.500 ug/L 02/24/17 01:58 1DichlorodifluoromethaneND 0.500 ug/L 02/24/17 01:58 11,1-Dichloroethane ND 0.500 ug/L 02/24/17 01:58 11,2-Dichloroethane ND 0.500 ug/L 02/24/17 01:58 11,1-Dichloroethene ND 0.500 ug/L 02/24/17 01:58 11,2-Dichloropropane ND 0.500 ug/L 02/24/17 01:58 11,3-Dichloropropane ND 0.500 ug/L 02/24/17 01:58 12,2-Dichloropropane ND 0.500 ug/L 02/24/17 01:58 11,1-Dichloropropene ND 0.500 ug/L 02/24/17 01:58 1Diisopropyl ether ND 100 ug/L 02/24/17 01:58 1EthanolND 0.500 ug/L 02/24/17 01:58 1EthylbenzeneND 1.00 ug/L 02/24/17 01:58 1HexachlorobutadieneND 1.00 ug/L 02/24/17 01:58 1IsopropylbenzeneND 5.00 ug/L 02/24/17 01:58 1Methylene Chloride ND 0.500 ug/L 02/24/17 01:58 1Methyl tert-butyl ether ND 5.00 ug/L 02/24/17 01:58 1NaphthaleneND 0.500 ug/L 02/24/17 01:58 1n-Butylbenzene ND 0.500 ug/L 02/24/17 01:58 1N-Propylbenzene ND 0.500 ug/L 02/24/17 01:58 1p-Isopropyltoluene ND 0.500 ug/L 02/24/17 01:58 1sec-Butylbenzene ND 0.500 ug/L 02/24/17 01:58 1StyreneND 0.500 ug/L 02/24/17 01:58 1tert-Butylbenzene ND 0.500 ug/L 02/24/17 01:58 11,1,1,2-Tetrachloroethane ND 0.500 ug/L 02/24/17 01:58 11,1,2,2-Tetrachloroethane ND 0.500 ug/L 02/24/17 01:58 1TetrachloroetheneND 0.500 ug/L 02/24/17 01:58 1TolueneND 0.500 ug/L 02/24/17 01:58 1trans-1,2-Dichloroethene ND TestAmerica Nashville Page 20 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-8Client Sample ID: MW-9 Matrix: WaterDate Collected: 02/17/17 09:00 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL trans-1,3-Dichloropropene ND 0.500 ug/L 02/24/17 01:58 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/24/17 01:58 11,2,3-Trichlorobenzene ND 0.500 ug/L 02/24/17 01:58 11,2,4-Trichlorobenzene ND 0.500 ug/L 02/24/17 01:58 11,1,1-Trichloroethane ND 0.500 ug/L 02/24/17 01:58 11,1,2-Trichloroethane ND 0.500 ug/L 02/24/17 01:58 1TrichloroetheneND 0.500 ug/L 02/24/17 01:58 1TrichlorofluoromethaneND 0.500 ug/L 02/24/17 01:58 11,2,3-Trichloropropane ND 0.500 ug/L 02/24/17 01:58 11,2,4-Trimethylbenzene ND 0.500 ug/L 02/24/17 01:58 11,3,5-Trimethylbenzene ND 0.500 ug/L 02/24/17 01:58 1Vinyl chloride ND 1.00 ug/L 02/24/17 01:58 1Xylenes, Total ND 4-Bromofluorobenzene (Surr)100 70-130 02/24/17 01:58 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)99 02/24/17 01:58 170-130 1,2-Dichloroethane-d4 (Surr)104 02/24/17 01:58 170-130 Toluene-d8 (Surr)98 02/24/17 01:58 170-130 TestAmerica Nashville Page 21 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-9Client Sample ID: MW-10 Matrix: WaterDate Collected: 02/17/17 09:30 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds RL MDL Benzene 9.23 0.500 ug/L 02/24/17 02:25 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/24/17 02:25 1BromobenzeneND 0.500 ug/L 02/24/17 02:25 1BromochloromethaneND 0.500 ug/L 02/24/17 02:25 1BromodichloromethaneND 0.500 ug/L 02/24/17 02:25 1BromoformND 0.500 ug/L 02/24/17 02:25 1BromomethaneND 0.500 ug/L 02/24/17 02:25 1Carbon tetrachloride ND 0.500 ug/L 02/24/17 02:25 1ChlorobenzeneND 0.500 ug/L 02/24/17 02:25 1ChloroethaneND 0.500 ug/L 02/24/17 02:25 1ChloroformND 0.500 ug/L 02/24/17 02:25 1ChloromethaneND 0.500 ug/L 02/24/17 02:25 12-Chlorotoluene ND 0.500 ug/L 02/24/17 02:25 14-Chlorotoluene ND 0.500 ug/L 02/24/17 02:25 1cis-1,2-Dichloroethene ND 0.500 ug/L 02/24/17 02:25 1cis-1,3-Dichloropropene ND 0.500 ug/L 02/24/17 02:25 1DibromochloromethaneND 5.00 ug/L 02/24/17 02:25 11,2-Dibromo-3-Chloropropane ND 0.500 ug/L 02/24/17 02:25 11,2-Dibromoethane (EDB)ND 0.500 ug/L 02/24/17 02:25 1DibromomethaneND 0.500 ug/L 02/24/17 02:25 11,2-Dichlorobenzene ND 0.500 ug/L 02/24/17 02:25 11,3-Dichlorobenzene ND 0.500 ug/L 02/24/17 02:25 11,4-Dichlorobenzene ND 0.500 ug/L 02/24/17 02:25 1DichlorodifluoromethaneND 0.500 ug/L 02/24/17 02:25 11,1-Dichloroethane ND 0.500 ug/L 02/24/17 02:25 11,2-Dichloroethane ND 0.500 ug/L 02/24/17 02:25 11,1-Dichloroethene ND 0.500 ug/L 02/24/17 02:25 11,2-Dichloropropane ND 0.500 ug/L 02/24/17 02:25 11,3-Dichloropropane ND 0.500 ug/L 02/24/17 02:25 12,2-Dichloropropane ND 0.500 ug/L 02/24/17 02:25 11,1-Dichloropropene ND 0.500 ug/L 02/24/17 02:25 1Diisopropyl ether ND 100 ug/L 02/24/17 02:25 1EthanolND 0.500 ug/L 02/24/17 02:25 1Ethylbenzene90.1 1.00 ug/L 02/24/17 02:25 1HexachlorobutadieneND 1.00 ug/L 02/24/17 02:25 1Isopropylbenzene27.7 5.00 ug/L 02/24/17 02:25 1Methylene Chloride ND 0.500 ug/L 02/24/17 02:25 1Methyl tert-butyl ether ND 5.00 ug/L 02/24/17 02:25 1Naphthalene153 0.500 ug/L 02/24/17 02:25 1n-Butylbenzene 8.18 0.500 ug/L 02/24/17 02:25 1N-Propylbenzene 65.6 0.500 ug/L 02/24/17 02:25 1p-Isopropyltoluene ND 0.500 ug/L 02/24/17 02:25 1sec-Butylbenzene 4.10 0.500 ug/L 02/24/17 02:25 1StyreneND 0.500 ug/L 02/24/17 02:25 1tert-Butylbenzene ND 0.500 ug/L 02/24/17 02:25 11,1,1,2-Tetrachloroethane ND 0.500 ug/L 02/24/17 02:25 11,1,2,2-Tetrachloroethane ND 0.500 ug/L 02/24/17 02:25 1TetrachloroetheneND 0.500 ug/L 02/24/17 02:25 1Toluene4.72 0.500 ug/L 02/24/17 02:25 1trans-1,2-Dichloroethene ND TestAmerica Nashville Page 22 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-9Client Sample ID: MW-10 Matrix: WaterDate Collected: 02/17/17 09:30 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL trans-1,3-Dichloropropene ND 0.500 ug/L 02/24/17 02:25 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/24/17 02:25 11,2,3-Trichlorobenzene ND 0.500 ug/L 02/24/17 02:25 11,2,4-Trichlorobenzene ND 0.500 ug/L 02/24/17 02:25 11,1,1-Trichloroethane ND 0.500 ug/L 02/24/17 02:25 11,1,2-Trichloroethane ND 0.500 ug/L 02/24/17 02:25 1TrichloroetheneND 0.500 ug/L 02/24/17 02:25 1TrichlorofluoromethaneND 0.500 ug/L 02/24/17 02:25 11,2,3-Trichloropropane ND 0.500 ug/L 02/24/17 02:25 11,2,4-Trimethylbenzene 12.1 0.500 ug/L 02/24/17 02:25 11,3,5-Trimethylbenzene 3.18 0.500 ug/L 02/24/17 02:25 1Vinyl chloride ND 1.00 ug/L 02/24/17 02:25 1Xylenes, Total 124 4-Bromofluorobenzene (Surr)105 70-130 02/24/17 02:25 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)103 02/24/17 02:25 170-130 1,2-Dichloroethane-d4 (Surr)98 02/24/17 02:25 170-130 Toluene-d8 (Surr)95 02/24/17 02:25 170-130 TestAmerica Nashville Page 23 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-10Client Sample ID: DW-1 Matrix: WaterDate Collected: 02/17/17 11:05 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds RL MDL Benzene ND 0.500 ug/L 02/23/17 17:33 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 17:33 1BromobenzeneND 0.500 ug/L 02/23/17 17:33 1BromochloromethaneND 0.500 ug/L 02/23/17 17:33 1BromodichloromethaneND 0.500 ug/L 02/23/17 17:33 1BromoformND 0.500 ug/L 02/23/17 17:33 1BromomethaneND 0.500 ug/L 02/23/17 17:33 1Carbon tetrachloride ND 0.500 ug/L 02/23/17 17:33 1ChlorobenzeneND 0.500 ug/L 02/23/17 17:33 1ChloroethaneND 0.500 ug/L 02/23/17 17:33 1ChloroformND 0.500 ug/L 02/23/17 17:33 1ChloromethaneND 0.500 ug/L 02/23/17 17:33 12-Chlorotoluene ND * 0.500 ug/L 02/23/17 17:33 14-Chlorotoluene ND 0.500 ug/L 02/23/17 17:33 1cis-1,2-Dichloroethene ND 0.500 ug/L 02/23/17 17:33 1cis-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 17:33 1DibromochloromethaneND 5.00 ug/L 02/23/17 17:33 11,2-Dibromo-3-Chloropropane ND 0.500 ug/L 02/23/17 17:33 11,2-Dibromoethane (EDB)ND 0.500 ug/L 02/23/17 17:33 1DibromomethaneND 0.500 ug/L 02/23/17 17:33 11,2-Dichlorobenzene ND 0.500 ug/L 02/23/17 17:33 11,3-Dichlorobenzene ND 0.500 ug/L 02/23/17 17:33 11,4-Dichlorobenzene ND 0.500 ug/L 02/23/17 17:33 1DichlorodifluoromethaneND 0.500 ug/L 02/23/17 17:33 11,1-Dichloroethane ND 0.500 ug/L 02/23/17 17:33 11,2-Dichloroethane ND 0.500 ug/L 02/23/17 17:33 11,1-Dichloroethene ND 0.500 ug/L 02/23/17 17:33 11,2-Dichloropropane ND 0.500 ug/L 02/23/17 17:33 11,3-Dichloropropane ND 0.500 ug/L 02/23/17 17:33 12,2-Dichloropropane ND 0.500 ug/L 02/23/17 17:33 11,1-Dichloropropene ND 0.500 ug/L 02/23/17 17:33 1Diisopropyl ether ND 100 ug/L 02/23/17 17:33 1EthanolND 0.500 ug/L 02/23/17 17:33 1EthylbenzeneND 1.00 ug/L 02/23/17 17:33 1HexachlorobutadieneND 1.00 ug/L 02/23/17 17:33 1IsopropylbenzeneND 5.00 ug/L 02/23/17 17:33 1Methylene Chloride ND 0.500 ug/L 02/23/17 17:33 1Methyl tert-butyl ether 0.534 5.00 ug/L 02/23/17 17:33 1NaphthaleneND 0.500 ug/L 02/23/17 17:33 1n-Butylbenzene ND 0.500 ug/L 02/23/17 17:33 1N-Propylbenzene ND 0.500 ug/L 02/23/17 17:33 1p-Isopropyltoluene ND 0.500 ug/L 02/23/17 17:33 1sec-Butylbenzene ND 0.500 ug/L 02/23/17 17:33 1StyreneND 0.500 ug/L 02/23/17 17:33 1tert-Butylbenzene ND 0.500 ug/L 02/23/17 17:33 11,1,1,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 17:33 11,1,2,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 17:33 1TetrachloroetheneND 0.500 ug/L 02/23/17 17:33 1TolueneND 0.500 ug/L 02/23/17 17:33 1trans-1,2-Dichloroethene ND TestAmerica Nashville Page 24 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Lab Sample ID: 490-122245-10Client Sample ID: DW-1 Matrix: WaterDate Collected: 02/17/17 11:05 Date Received: 02/18/17 08:50 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL trans-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 17:33 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 0.500 ug/L 02/23/17 17:33 11,2,3-Trichlorobenzene ND 0.500 ug/L 02/23/17 17:33 11,2,4-Trichlorobenzene ND 0.500 ug/L 02/23/17 17:33 11,1,1-Trichloroethane ND 0.500 ug/L 02/23/17 17:33 11,1,2-Trichloroethane ND 0.500 ug/L 02/23/17 17:33 1TrichloroetheneND 0.500 ug/L 02/23/17 17:33 1TrichlorofluoromethaneND 0.500 ug/L 02/23/17 17:33 11,2,3-Trichloropropane ND 0.500 ug/L 02/23/17 17:33 11,2,4-Trimethylbenzene ND 0.500 ug/L 02/23/17 17:33 11,3,5-Trimethylbenzene ND 0.500 ug/L 02/23/17 17:33 1Vinyl chloride ND 1.00 ug/L 02/23/17 17:33 1Xylenes, Total ND 4-Bromofluorobenzene (Surr)103 70-130 02/23/17 17:33 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)102 02/23/17 17:33 170-130 1,2-Dichloroethane-d4 (Surr)103 02/23/17 17:33 170-130 Toluene-d8 (Surr)97 02/23/17 17:33 170-130 TestAmerica Nashville Page 25 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds Client Sample ID: Method BlankLab Sample ID: MB 490-410127/7 Matrix: Water Prep Type: Total/NA Analysis Batch: 410127 RL MDL Benzene ND 0.500 ug/L 02/23/17 12:52 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.500 ug/L 02/23/17 12:52 1Bromobenzene ND 0.500 ug/L 02/23/17 12:52 1Bromochloromethane ND 0.500 ug/L 02/23/17 12:52 1Bromodichloromethane ND 0.500 ug/L 02/23/17 12:52 1Bromoform ND 0.500 ug/L 02/23/17 12:52 1Bromomethane ND 0.500 ug/L 02/23/17 12:52 1Carbon tetrachloride ND 0.500 ug/L 02/23/17 12:52 1Chlorobenzene ND 0.500 ug/L 02/23/17 12:52 1Chloroethane ND 0.500 ug/L 02/23/17 12:52 1Chloroform ND 0.500 ug/L 02/23/17 12:52 1Chloromethane ND 0.500 ug/L 02/23/17 12:52 12-Chlorotoluene ND 0.500 ug/L 02/23/17 12:52 14-Chlorotoluene ND 0.500 ug/L 02/23/17 12:52 1cis-1,2-Dichloroethene ND 0.500 ug/L 02/23/17 12:52 1cis-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 12:52 1Dibromochloromethane ND 5.00 ug/L 02/23/17 12:52 11,2-Dibromo-3-Chloropropane ND 0.500 ug/L 02/23/17 12:52 11,2-Dibromoethane (EDB) ND 0.500 ug/L 02/23/17 12:52 1Dibromomethane ND 0.500 ug/L 02/23/17 12:52 11,2-Dichlorobenzene ND 0.500 ug/L 02/23/17 12:52 11,3-Dichlorobenzene ND 0.500 ug/L 02/23/17 12:52 11,4-Dichlorobenzene ND 0.500 ug/L 02/23/17 12:52 1Dichlorodifluoromethane ND 0.500 ug/L 02/23/17 12:52 11,1-Dichloroethane ND 0.500 ug/L 02/23/17 12:52 11,2-Dichloroethane ND 0.500 ug/L 02/23/17 12:52 11,1-Dichloroethene ND 0.500 ug/L 02/23/17 12:52 11,2-Dichloropropane ND 0.500 ug/L 02/23/17 12:52 11,3-Dichloropropane ND 0.500 ug/L 02/23/17 12:52 12,2-Dichloropropane ND 0.500 ug/L 02/23/17 12:52 11,1-Dichloropropene ND 0.500 ug/L 02/23/17 12:52 1Diisopropyl ether ND 100 ug/L 02/23/17 12:52 1Ethanol ND 0.500 ug/L 02/23/17 12:52 1Ethylbenzene ND 1.00 ug/L 02/23/17 12:52 1Hexachlorobutadiene ND 1.00 ug/L 02/23/17 12:52 1Isopropylbenzene ND 5.00 ug/L 02/23/17 12:52 1Methylene Chloride ND 0.500 ug/L 02/23/17 12:52 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/17 12:52 1Naphthalene ND 0.500 ug/L 02/23/17 12:52 1n-Butylbenzene ND 0.500 ug/L 02/23/17 12:52 1N-Propylbenzene ND 0.500 ug/L 02/23/17 12:52 1p-Isopropyltoluene ND 0.500 ug/L 02/23/17 12:52 1sec-Butylbenzene ND 0.500 ug/L 02/23/17 12:52 1Styrene ND 0.500 ug/L 02/23/17 12:52 1tert-Butylbenzene ND 0.500 ug/L 02/23/17 12:52 11,1,1,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 12:52 11,1,2,2-Tetrachloroethane ND 0.500 ug/L 02/23/17 12:52 1Tetrachloroethene ND 0.500 ug/L 02/23/17 12:52 1Toluene TestAmerica Nashville Page 26 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Method BlankLab Sample ID: MB 490-410127/7 Matrix: Water Prep Type: Total/NA Analysis Batch: 410127 RL MDL trans-1,2-Dichloroethene ND 0.500 ug/L 02/23/17 12:52 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.500 ug/L 02/23/17 12:52 1trans-1,3-Dichloropropene ND 0.500 ug/L 02/23/17 12:52 11,2,3-Trichlorobenzene ND 0.500 ug/L 02/23/17 12:52 11,2,4-Trichlorobenzene ND 0.500 ug/L 02/23/17 12:52 11,1,1-Trichloroethane ND 0.500 ug/L 02/23/17 12:52 11,1,2-Trichloroethane ND 0.500 ug/L 02/23/17 12:52 1Trichloroethene ND 0.500 ug/L 02/23/17 12:52 1Trichlorofluoromethane ND 0.500 ug/L 02/23/17 12:52 11,2,3-Trichloropropane ND 0.500 ug/L 02/23/17 12:52 11,2,4-Trimethylbenzene ND 0.500 ug/L 02/23/17 12:52 11,3,5-Trimethylbenzene ND 0.500 ug/L 02/23/17 12:52 1Vinyl chloride ND 1.00 ug/L 02/23/17 12:52 1Xylenes, Total 4-Bromofluorobenzene (Surr)104 70-130 02/23/17 12:52 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 102 02/23/17 12:52 1Dibromofluoromethane (Surr)70-130 106 02/23/17 12:52 11,2-Dichloroethane-d4 (Surr)70-130 96 02/23/17 12:52 1Toluene-d8 (Surr)70-130 Client Sample ID: Lab Control SampleLab Sample ID: LCS 490-410127/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 410127 Benzene 20.0 16.61 ug/L 83 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec. Limits Bromobenzene 20.0 18.98 ug/L 95 70-130 Bromochloromethane 20.0 16.98 ug/L 85 70-130 Bromodichloromethane 20.0 17.04 ug/L 85 70-130 Bromoform 20.0 17.17 ug/L 86 70-130 Bromomethane 20.0 17.24 ug/L 86 60-140 Carbon tetrachloride 20.0 16.64 ug/L 83 70-130 Chlorobenzene 20.0 16.25 ug/L 81 70-130 Chloroethane 20.0 17.12 ug/L 86 60-140 Chloroform 20.0 16.44 ug/L 82 70-130 Chloromethane 20.0 16.90 ug/L 84 60-140 2-Chlorotoluene 20.0 15.41 ug/L 77 70-130 4-Chlorotoluene 20.0 16.15 ug/L 81 70-130 cis-1,2-Dichloroethene 20.0 16.73 ug/L 84 70-130 cis-1,3-Dichloropropene 20.0 16.37 ug/L 82 70-130 Dibromochloromethane 20.0 17.34 ug/L 87 70-130 1,2-Dibromo-3-Chloropropane 20.0 15.84 ug/L 79 70-130 Dibromomethane 20.0 16.97 ug/L 85 70-130 1,2-Dichlorobenzene 20.0 17.10 ug/L 85 70-130 1,3-Dichlorobenzene 20.0 16.95 ug/L 85 70-130 1,4-Dichlorobenzene 20.0 16.59 ug/L 83 70-130 Dichlorodifluoromethane 20.0 18.15 ug/L 91 60-140 1,1-Dichloroethane 20.0 16.50 ug/L 83 70-130 TestAmerica Nashville Page 27 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 490-410127/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 410127 1,2-Dichloroethane 20.0 16.60 ug/L 83 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec. Limits 1,1-Dichloroethene 20.0 15.92 ug/L 80 70-130 1,2-Dichloropropane 20.0 16.94 ug/L 85 70-130 1,3-Dichloropropane 20.0 16.10 ug/L 81 70-130 2,2-Dichloropropane 20.0 18.47 ug/L 92 70-130 1,1-Dichloropropene 20.0 15.81 ug/L 79 70-130 Diisopropyl ether 20.0 17.72 ug/L 89 70-130 Ethanol 800 643.4 ug/L 80 60-140 Ethylbenzene 20.0 16.39 ug/L 82 70-130 Hexachlorobutadiene 20.0 20.56 ug/L 103 70-130 Isopropylbenzene 20.0 16.66 ug/L 83 70-130 Methylene Chloride 20.0 17.32 ug/L 87 70-130 Methyl tert-butyl ether 20.0 16.94 ug/L 85 70-130 Naphthalene 20.0 16.94 ug/L 85 70-130 n-Butylbenzene 20.0 18.94 ug/L 95 70-130 N-Propylbenzene 20.0 17.15 ug/L 86 70-130 p-Isopropyltoluene 20.0 17.71 ug/L 89 70-130 sec-Butylbenzene 20.0 17.61 ug/L 88 70-130 Styrene 20.0 16.51 ug/L 83 70-130 tert-Butylbenzene 20.0 16.84 ug/L 84 70-130 1,1,1,2-Tetrachloroethane 20.0 15.76 ug/L 79 70-130 1,1,2,2-Tetrachloroethane 20.0 16.39 ug/L 82 70-130 Tetrachloroethene 20.0 15.32 ug/L 77 70-130 Toluene 20.0 15.77 ug/L 79 70-130 trans-1,2-Dichloroethene 20.0 16.18 ug/L 81 70-130 trans-1,3-Dichloropropene 20.0 18.12 ug/L 91 70-130 1,2,3-Trichlorobenzene 20.0 17.73 ug/L 89 70-130 1,2,4-Trichlorobenzene 20.0 17.54 ug/L 88 70-130 1,1,1-Trichloroethane 20.0 15.92 ug/L 80 70-130 1,1,2-Trichloroethane 20.0 15.94 ug/L 80 70-130 Trichloroethene 20.0 16.09 ug/L 80 70-130 Trichlorofluoromethane 20.0 17.93 ug/L 90 60-140 1,2,3-Trichloropropane 20.0 16.40 ug/L 82 70-130 1,2,4-Trimethylbenzene 20.0 16.87 ug/L 84 70-130 1,3,5-Trimethylbenzene 20.0 16.58 ug/L 83 70-130 Vinyl chloride 20.0 17.31 ug/L 87 60-140 Xylenes, Total 40.0 32.83 ug/L 82 70-130 4-Bromofluorobenzene (Surr)70 -130 Surrogate 101 LCS LCS Qualifier Limits%Recovery 105Dibromofluoromethane (Surr)70 -130 1031,2-Dichloroethane-d4 (Surr)70 -130 95Toluene-d8 (Surr)70 -130 TestAmerica Nashville Page 28 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 490-410127/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 410127 Benzene 20.0 19.07 ug/L 95 70-130 14 20 Analyte LCSD LCSD DUnitResultQualifier %Rec Spike Added %Rec. Limits LimitRPD RPD Bromobenzene 20.0 21.08 ug/L 105 70-130 10 20 Bromochloromethane 20.0 19.12 ug/L 96 70-130 12 20 Bromodichloromethane 20.0 19.00 ug/L 95 70-130 11 20 Bromoform 20.0 19.78 ug/L 99 70-130 14 20 Bromomethane 20.0 18.16 ug/L 91 60-140 5 20 Carbon tetrachloride 20.0 19.08 ug/L 95 70-130 14 20 Chlorobenzene 20.0 18.78 ug/L 94 70-130 14 20 Chloroethane 20.0 17.23 ug/L 86 60-140 1 20 Chloroform 20.0 18.89 ug/L 94 70-130 14 20 Chloromethane 20.0 17.16 ug/L 86 60-140 2 20 2-Chlorotoluene 20.0 20.45 *ug/L 102 70-130 28 20 4-Chlorotoluene 20.0 18.51 ug/L 93 70-130 14 20 cis-1,2-Dichloroethene 20.0 19.12 ug/L 96 70-130 13 20 cis-1,3-Dichloropropene 20.0 19.25 ug/L 96 70-130 16 20 Dibromochloromethane 20.0 19.87 ug/L 99 70-130 14 20 1,2-Dibromo-3-Chloropropane 20.0 16.15 ug/L 81 70-130 2 20 Dibromomethane 20.0 19.60 ug/L 98 70-130 14 20 1,2-Dichlorobenzene 20.0 18.54 ug/L 93 70-130 8 20 1,3-Dichlorobenzene 20.0 19.04 ug/L 95 70-130 12 20 1,4-Dichlorobenzene 20.0 18.53 ug/L 93 70-130 11 20 Dichlorodifluoromethane 20.0 18.73 ug/L 94 60-140 3 20 1,1-Dichloroethane 20.0 18.58 ug/L 93 70-130 12 20 1,2-Dichloroethane 20.0 19.61 ug/L 98 70-130 17 20 1,1-Dichloroethene 20.0 17.91 ug/L 90 70-130 12 20 1,2-Dichloropropane 20.0 18.79 ug/L 94 70-130 10 20 1,3-Dichloropropane 20.0 18.50 ug/L 92 70-130 14 20 2,2-Dichloropropane 20.0 21.16 ug/L 106 70-130 14 20 1,1-Dichloropropene 20.0 18.44 ug/L 92 70-130 15 20 Diisopropyl ether 20.0 20.25 ug/L 101 70-130 13 20 Ethanol 800 727.4 ug/L 91 60-140 12 20 Ethylbenzene 20.0 18.65 ug/L 93 70-130 13 20 Hexachlorobutadiene 20.0 22.71 ug/L 114 70-130 10 20 Isopropylbenzene 20.0 19.11 ug/L 96 70-130 14 20 Methylene Chloride 20.0 19.52 ug/L 98 70-130 12 20 Methyl tert-butyl ether 20.0 20.15 ug/L 101 70-130 17 20 Naphthalene 20.0 19.54 ug/L 98 70-130 14 20 n-Butylbenzene 20.0 20.96 ug/L 105 70-130 10 20 N-Propylbenzene 20.0 19.03 ug/L 95 70-130 10 20 p-Isopropyltoluene 20.0 19.55 ug/L 98 70-130 10 20 sec-Butylbenzene 20.0 19.39 ug/L 97 70-130 10 20 Styrene 20.0 18.97 ug/L 95 70-130 14 20 tert-Butylbenzene 20.0 18.68 ug/L 93 70-130 10 20 1,1,1,2-Tetrachloroethane 20.0 17.83 ug/L 89 70-130 12 20 1,1,2,2-Tetrachloroethane 20.0 19.42 ug/L 97 70-130 17 20 Tetrachloroethene 20.0 17.66 ug/L 88 70-130 14 20 Toluene 20.0 17.97 ug/L 90 70-130 13 20 trans-1,2-Dichloroethene 20.0 18.67 ug/L 93 70-130 14 20 TestAmerica Nashville Page 29 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 490-410127/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 410127 trans-1,3-Dichloropropene 20.0 20.81 ug/L 104 70-130 14 20 Analyte LCSD LCSD DUnitResultQualifier %Rec Spike Added %Rec. Limits LimitRPD RPD 1,2,3-Trichlorobenzene 20.0 20.37 ug/L 102 70-130 14 20 1,2,4-Trichlorobenzene 20.0 20.01 ug/L 100 70-130 13 20 1,1,1-Trichloroethane 20.0 18.06 ug/L 90 70-130 13 20 1,1,2-Trichloroethane 20.0 18.60 ug/L 93 70-130 15 20 Trichloroethene 20.0 18.27 ug/L 91 70-130 13 20 Trichlorofluoromethane 20.0 18.26 ug/L 91 60-140 2 20 1,2,3-Trichloropropane 20.0 18.38 ug/L 92 70-130 11 20 1,2,4-Trimethylbenzene 20.0 18.82 ug/L 94 70-130 11 20 1,3,5-Trimethylbenzene 20.0 18.51 ug/L 93 70-130 11 20 Vinyl chloride 20.0 17.78 ug/L 89 60-140 3 20 Xylenes, Total 40.0 37.29 ug/L 93 70-130 13 20 4-Bromofluorobenzene (Surr)70 -130 Surrogate 98 LCSD LCSD Qualifier Limits%Recovery 104Dibromofluoromethane (Surr)70 -130 1031,2-Dichloroethane-d4 (Surr)70 -130 95Toluene-d8 (Surr)70 -130 Client Sample ID: MW-6Lab Sample ID: 490-122245-5 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 410127 Benzene ND 20.0 19.71 ug/L 99 70-130 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec. Limits Bromobenzene ND 20.0 20.79 ug/L 104 70-130 Bromochloromethane ND 20.0 18.67 ug/L 93 70-130 Bromodichloromethane ND 20.0 18.98 ug/L 95 70-130 Bromoform ND 20.0 18.82 ug/L 94 70-130 Bromomethane ND 20.0 15.94 ug/L 80 60-140 Carbon tetrachloride ND 20.0 20.25 ug/L 101 70-130 Chlorobenzene ND 20.0 19.05 ug/L 95 70-130 Chloroethane ND 20.0 20.17 ug/L 101 60-140 Chloroform ND 20.0 19.27 ug/L 96 70-130 Chloromethane ND 20.0 18.33 ug/L 92 60-140 2-Chlorotoluene ND *20.0 17.10 ug/L 85 70-130 4-Chlorotoluene ND 20.0 18.35 ug/L 92 70-130 cis-1,2-Dichloroethene ND 20.0 19.25 ug/L 96 70-130 cis-1,3-Dichloropropene ND 20.0 19.06 ug/L 95 70-130 Dibromochloromethane ND 20.0 19.48 ug/L 97 70-130 1,2-Dibromo-3-Chloropropane ND 20.0 16.36 ug/L 82 70-130 Dibromomethane ND 20.0 18.87 ug/L 94 70-130 1,2-Dichlorobenzene ND 20.0 18.09 ug/L 90 70-130 1,3-Dichlorobenzene ND 20.0 18.82 ug/L 94 70-130 1,4-Dichlorobenzene ND 20.0 18.48 ug/L 92 70-130 Dichlorodifluoromethane ND 20.0 21.83 ug/L 109 60-140 1,1-Dichloroethane ND 20.0 19.42 ug/L 97 70-130 1,2-Dichloroethane ND 20.0 18.73 ug/L 94 70-130 TestAmerica Nashville Page 30 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: MW-6Lab Sample ID: 490-122245-5 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 410127 1,1-Dichloroethene ND 20.0 19.36 ug/L 97 70-130 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec. Limits 1,2-Dichloropropane ND 20.0 19.14 ug/L 96 70-130 1,3-Dichloropropane ND 20.0 18.72 ug/L 94 70-130 2,2-Dichloropropane ND 20.0 22.05 ug/L 110 70-130 1,1-Dichloropropene ND 20.0 19.67 ug/L 98 70-130 Diisopropyl ether ND 20.0 19.86 ug/L 99 70-130 Ethanol ND F2 800 898.4 ug/L 112 60-140 Ethylbenzene ND 20.0 19.69 ug/L 97 70-130 Hexachlorobutadiene ND 20.0 20.94 ug/L 105 70-130 Isopropylbenzene ND 20.0 19.94 ug/L 100 70-130 Methylene Chloride ND 20.0 19.30 ug/L 96 70-130 Methyl tert-butyl ether ND 20.0 19.06 ug/L 95 70-130 Naphthalene ND 20.0 18.77 ug/L 72 70-130 n-Butylbenzene ND 20.0 20.44 ug/L 102 70-130 N-Propylbenzene ND 20.0 19.68 ug/L 98 70-130 p-Isopropyltoluene ND 20.0 19.85 ug/L 99 70-130 sec-Butylbenzene ND 20.0 19.89 ug/L 99 70-130 Styrene ND 20.0 18.94 ug/L 95 70-130 tert-Butylbenzene ND 20.0 19.42 ug/L 97 70-130 1,1,1,2-Tetrachloroethane ND 20.0 17.89 ug/L 89 70-130 1,1,2,2-Tetrachloroethane ND 20.0 18.82 ug/L 94 70-130 Tetrachloroethene ND 20.0 19.44 ug/L 97 70-130 Toluene ND 20.0 19.54 ug/L 98 70-130 trans-1,2-Dichloroethene ND 20.0 19.09 ug/L 95 70-130 trans-1,3-Dichloropropene ND 20.0 20.26 ug/L 101 70-130 1,2,3-Trichlorobenzene ND 20.0 18.78 ug/L 94 70-130 1,2,4-Trichlorobenzene ND 20.0 18.91 ug/L 95 70-130 1,1,1-Trichloroethane ND 20.0 19.42 ug/L 97 70-130 1,1,2-Trichloroethane ND 20.0 18.71 ug/L 94 70-130 Trichloroethene ND 20.0 19.23 ug/L 96 70-130 Trichlorofluoromethane ND 20.0 22.16 ug/L 111 60-140 1,2,3-Trichloropropane ND 20.0 18.25 ug/L 91 70-130 1,2,4-Trimethylbenzene ND 20.0 18.98 ug/L 93 70-130 1,3,5-Trimethylbenzene ND 20.0 18.66 ug/L 93 70-130 Vinyl chloride ND 20.0 20.74 ug/L 104 60-140 Xylenes, Total ND 40.0 38.52 ug/L 96 70-130 4-Bromofluorobenzene (Surr)70 -130 Surrogate 98 MS MS Qualifier Limits%Recovery 102Dibromofluoromethane (Surr)70 -130 981,2-Dichloroethane-d4 (Surr)70 -130 98Toluene-d8 (Surr)70 -130 TestAmerica Nashville Page 31 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: MW-6Lab Sample ID: 490-122245-5 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 410127 Benzene ND 20.0 19.34 ug/L 97 70-130 2 20 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec. Limits LimitRPD RPD Bromobenzene ND 20.0 21.04 ug/L 105 70-130 1 20 Bromochloromethane ND 20.0 19.09 ug/L 95 70-130 2 20 Bromodichloromethane ND 20.0 18.75 ug/L 94 70-130 1 20 Bromoform ND 20.0 19.17 ug/L 96 70-130 2 20 Bromomethane ND 20.0 18.49 ug/L 92 60-140 15 20 Carbon tetrachloride ND 20.0 20.61 ug/L 103 70-130 2 20 Chlorobenzene ND 20.0 19.06 ug/L 95 70-130 0 20 Chloroethane ND 20.0 20.12 ug/L 101 60-140 0 20 Chloroform ND 20.0 18.84 ug/L 94 70-130 2 20 Chloromethane ND 20.0 18.29 ug/L 91 60-140 0 20 2-Chlorotoluene ND *20.0 17.63 ug/L 88 70-130 3 20 4-Chlorotoluene ND 20.0 18.24 ug/L 91 70-130 1 20 cis-1,2-Dichloroethene ND 20.0 19.49 ug/L 97 70-130 1 20 cis-1,3-Dichloropropene ND 20.0 18.66 ug/L 93 70-130 2 20 Dibromochloromethane ND 20.0 19.67 ug/L 98 70-130 1 20 1,2-Dibromo-3-Chloropropane ND 20.0 17.08 ug/L 85 70-130 4 20 Dibromomethane ND 20.0 19.08 ug/L 95 70-130 1 20 1,2-Dichlorobenzene ND 20.0 19.09 ug/L 95 70-130 5 20 1,3-Dichlorobenzene ND 20.0 19.12 ug/L 96 70-130 2 20 1,4-Dichlorobenzene ND 20.0 18.78 ug/L 94 70-130 2 20 Dichlorodifluoromethane ND 20.0 21.91 ug/L 110 60-140 0 20 1,1-Dichloroethane ND 20.0 19.01 ug/L 95 70-130 2 20 1,2-Dichloroethane ND 20.0 18.77 ug/L 94 70-130 0 20 1,1-Dichloroethene ND 20.0 19.82 ug/L 99 70-130 2 20 1,2-Dichloropropane ND 20.0 19.29 ug/L 96 70-130 1 20 1,3-Dichloropropane ND 20.0 18.63 ug/L 93 70-130 0 20 2,2-Dichloropropane ND 20.0 22.04 ug/L 110 70-130 0 20 1,1-Dichloropropene ND 20.0 19.29 ug/L 96 70-130 2 20 Diisopropyl ether ND 20.0 19.54 ug/L 98 70-130 2 20 Ethanol ND F2 800 506.6 F2 ug/L 63 60-140 56 20 Ethylbenzene ND 20.0 19.66 ug/L 97 70-130 0 20 Hexachlorobutadiene ND 20.0 22.23 ug/L 111 70-130 6 20 Isopropylbenzene ND 20.0 20.13 ug/L 101 70-130 1 20 Methylene Chloride ND 20.0 19.38 ug/L 97 70-130 0 20 Methyl tert-butyl ether ND 20.0 18.79 ug/L 94 70-130 1 20 Naphthalene ND 20.0 19.22 ug/L 74 70-130 2 20 n-Butylbenzene ND 20.0 21.33 ug/L 107 70-130 4 20 N-Propylbenzene ND 20.0 20.03 ug/L 100 70-130 2 20 p-Isopropyltoluene ND 20.0 20.27 ug/L 101 70-130 2 20 sec-Butylbenzene ND 20.0 20.46 ug/L 102 70-130 3 20 Styrene ND 20.0 19.19 ug/L 96 70-130 1 20 tert-Butylbenzene ND 20.0 19.88 ug/L 99 70-130 2 20 1,1,1,2-Tetrachloroethane ND 20.0 18.25 ug/L 91 70-130 2 20 1,1,2,2-Tetrachloroethane ND 20.0 18.81 ug/L 94 70-130 0 20 Tetrachloroethene ND 20.0 19.09 ug/L 95 70-130 2 20 Toluene ND 20.0 19.16 ug/L 96 70-130 2 20 trans-1,2-Dichloroethene ND 20.0 18.91 ug/L 95 70-130 1 20 TestAmerica Nashville Page 32 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: MW-6Lab Sample ID: 490-122245-5 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 410127 trans-1,3-Dichloropropene ND 20.0 19.89 ug/L 99 70-130 2 20 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec. Limits LimitRPD RPD 1,2,3-Trichlorobenzene ND 20.0 19.33 ug/L 97 70-130 3 20 1,2,4-Trichlorobenzene ND 20.0 19.22 ug/L 96 70-130 2 20 1,1,1-Trichloroethane ND 20.0 19.24 ug/L 96 70-130 1 20 1,1,2-Trichloroethane ND 20.0 18.62 ug/L 93 70-130 0 20 Trichloroethene ND 20.0 19.00 ug/L 95 70-130 1 20 Trichlorofluoromethane ND 20.0 22.18 ug/L 111 60-140 0 20 1,2,3-Trichloropropane ND 20.0 17.95 ug/L 90 70-130 2 20 1,2,4-Trimethylbenzene ND 20.0 19.45 ug/L 95 70-130 2 20 1,3,5-Trimethylbenzene ND 20.0 18.94 ug/L 95 70-130 1 20 Vinyl chloride ND 20.0 20.54 ug/L 103 60-140 1 20 Xylenes, Total ND 40.0 38.63 ug/L 97 70-130 0 20 4-Bromofluorobenzene (Surr)70 -130 Surrogate 97 MSD MSD Qualifier Limits%Recovery 100Dibromofluoromethane (Surr)70 -130 951,2-Dichloroethane-d4 (Surr)70 -130 96Toluene-d8 (Surr)70 -130 Client Sample ID: Method BlankLab Sample ID: MB 490-410133/7 Matrix: Water Prep Type: Total/NA Analysis Batch: 410133 RL MDL Benzene ND 0.500 ug/L 02/24/17 01:05 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.500 ug/L 02/24/17 01:05 1Bromobenzene ND 0.500 ug/L 02/24/17 01:05 1Bromochloromethane ND 0.500 ug/L 02/24/17 01:05 1Bromodichloromethane ND 0.500 ug/L 02/24/17 01:05 1Bromoform ND 0.500 ug/L 02/24/17 01:05 1Bromomethane ND 0.500 ug/L 02/24/17 01:05 1Carbon tetrachloride ND 0.500 ug/L 02/24/17 01:05 1Chlorobenzene ND 0.500 ug/L 02/24/17 01:05 1Chloroethane ND 0.500 ug/L 02/24/17 01:05 1Chloroform ND 0.500 ug/L 02/24/17 01:05 1Chloromethane ND 0.500 ug/L 02/24/17 01:05 12-Chlorotoluene ND 0.500 ug/L 02/24/17 01:05 14-Chlorotoluene ND 0.500 ug/L 02/24/17 01:05 1cis-1,2-Dichloroethene ND 0.500 ug/L 02/24/17 01:05 1cis-1,3-Dichloropropene ND 0.500 ug/L 02/24/17 01:05 1Dibromochloromethane ND 5.00 ug/L 02/24/17 01:05 11,2-Dibromo-3-Chloropropane ND 0.500 ug/L 02/24/17 01:05 11,2-Dibromoethane (EDB) ND 0.500 ug/L 02/24/17 01:05 1Dibromomethane ND 0.500 ug/L 02/24/17 01:05 11,2-Dichlorobenzene ND 0.500 ug/L 02/24/17 01:05 11,3-Dichlorobenzene ND 0.500 ug/L 02/24/17 01:05 11,4-Dichlorobenzene ND 0.500 ug/L 02/24/17 01:05 1Dichlorodifluoromethane ND 0.500 ug/L 02/24/17 01:05 11,1-Dichloroethane TestAmerica Nashville Page 33 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Method BlankLab Sample ID: MB 490-410133/7 Matrix: Water Prep Type: Total/NA Analysis Batch: 410133 RL MDL 1,2-Dichloroethane ND 0.500 ug/L 02/24/17 01:05 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.500 ug/L 02/24/17 01:05 11,1-Dichloroethene ND 0.500 ug/L 02/24/17 01:05 11,2-Dichloropropane ND 0.500 ug/L 02/24/17 01:05 11,3-Dichloropropane ND 0.500 ug/L 02/24/17 01:05 12,2-Dichloropropane ND 0.500 ug/L 02/24/17 01:05 11,1-Dichloropropene ND 0.500 ug/L 02/24/17 01:05 1Diisopropyl ether ND 100 ug/L 02/24/17 01:05 1Ethanol ND 0.500 ug/L 02/24/17 01:05 1Ethylbenzene ND 1.00 ug/L 02/24/17 01:05 1Hexachlorobutadiene ND 1.00 ug/L 02/24/17 01:05 1Isopropylbenzene ND 5.00 ug/L 02/24/17 01:05 1Methylene Chloride ND 0.500 ug/L 02/24/17 01:05 1Methyl tert-butyl ether ND 5.00 ug/L 02/24/17 01:05 1Naphthalene ND 0.500 ug/L 02/24/17 01:05 1n-Butylbenzene ND 0.500 ug/L 02/24/17 01:05 1N-Propylbenzene ND 0.500 ug/L 02/24/17 01:05 1p-Isopropyltoluene ND 0.500 ug/L 02/24/17 01:05 1sec-Butylbenzene ND 0.500 ug/L 02/24/17 01:05 1Styrene ND 0.500 ug/L 02/24/17 01:05 1tert-Butylbenzene ND 0.500 ug/L 02/24/17 01:05 11,1,1,2-Tetrachloroethane ND 0.500 ug/L 02/24/17 01:05 11,1,2,2-Tetrachloroethane ND 0.500 ug/L 02/24/17 01:05 1Tetrachloroethene ND 0.500 ug/L 02/24/17 01:05 1Toluene ND 0.500 ug/L 02/24/17 01:05 1trans-1,2-Dichloroethene ND 0.500 ug/L 02/24/17 01:05 1trans-1,3-Dichloropropene ND 0.500 ug/L 02/24/17 01:05 11,2,3-Trichlorobenzene ND 0.500 ug/L 02/24/17 01:05 11,2,4-Trichlorobenzene ND 0.500 ug/L 02/24/17 01:05 11,1,1-Trichloroethane ND 0.500 ug/L 02/24/17 01:05 11,1,2-Trichloroethane ND 0.500 ug/L 02/24/17 01:05 1Trichloroethene ND 0.500 ug/L 02/24/17 01:05 1Trichlorofluoromethane ND 0.500 ug/L 02/24/17 01:05 11,2,3-Trichloropropane ND 0.500 ug/L 02/24/17 01:05 11,2,4-Trimethylbenzene ND 0.500 ug/L 02/24/17 01:05 11,3,5-Trimethylbenzene ND 0.500 ug/L 02/24/17 01:05 1Vinyl chloride ND 1.00 ug/L 02/24/17 01:05 1Xylenes, Total 4-Bromofluorobenzene (Surr)103 70-130 02/24/17 01:05 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 101 02/24/17 01:05 1Dibromofluoromethane (Surr)70-130 102 02/24/17 01:05 11,2-Dichloroethane-d4 (Surr)70-130 95 02/24/17 01:05 1Toluene-d8 (Surr)70-130 TestAmerica Nashville Page 34 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 490-410133/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 410133 Benzene 20.0 18.93 ug/L 95 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec. Limits Bromobenzene 20.0 20.38 ug/L 102 70-130 Bromochloromethane 20.0 19.02 ug/L 95 70-130 Bromodichloromethane 20.0 19.22 ug/L 96 70-130 Bromoform 20.0 19.80 ug/L 99 70-130 Bromomethane 20.0 18.81 ug/L 94 60-140 Carbon tetrachloride 20.0 19.18 ug/L 96 70-130 Chlorobenzene 20.0 18.70 ug/L 93 70-130 Chloroethane 20.0 19.01 ug/L 95 60-140 Chloroform 20.0 18.79 ug/L 94 70-130 Chloromethane 20.0 18.36 ug/L 92 60-140 2-Chlorotoluene 20.0 16.71 ug/L 84 70-130 4-Chlorotoluene 20.0 18.31 ug/L 92 70-130 cis-1,2-Dichloroethene 20.0 18.66 ug/L 93 70-130 cis-1,3-Dichloropropene 20.0 18.84 ug/L 94 70-130 Dibromochloromethane 20.0 19.73 ug/L 99 70-130 1,2-Dibromo-3-Chloropropane 20.0 17.02 ug/L 85 70-130 Dibromomethane 20.0 19.59 ug/L 98 70-130 1,2-Dichlorobenzene 20.0 18.08 ug/L 90 70-130 1,3-Dichlorobenzene 20.0 18.34 ug/L 92 70-130 1,4-Dichlorobenzene 20.0 17.96 ug/L 90 70-130 Dichlorodifluoromethane 20.0 20.32 ug/L 102 60-140 1,1-Dichloroethane 20.0 18.40 ug/L 92 70-130 1,2-Dichloroethane 20.0 19.10 ug/L 96 70-130 1,1-Dichloroethene 20.0 18.20 ug/L 91 70-130 1,2-Dichloropropane 20.0 19.24 ug/L 96 70-130 1,3-Dichloropropane 20.0 18.95 ug/L 95 70-130 2,2-Dichloropropane 20.0 19.99 ug/L 100 70-130 1,1-Dichloropropene 20.0 18.27 ug/L 91 70-130 Diisopropyl ether 20.0 19.57 ug/L 98 70-130 Ethanol 800 726.6 ug/L 91 60-140 Ethylbenzene 20.0 18.67 ug/L 93 70-130 Hexachlorobutadiene 20.0 20.85 ug/L 104 70-130 Isopropylbenzene 20.0 18.69 ug/L 93 70-130 Methylene Chloride 20.0 18.98 ug/L 95 70-130 Methyl tert-butyl ether 20.0 19.49 ug/L 97 70-130 Naphthalene 20.0 19.43 ug/L 97 70-130 n-Butylbenzene 20.0 19.56 ug/L 98 70-130 N-Propylbenzene 20.0 18.63 ug/L 93 70-130 p-Isopropyltoluene 20.0 18.98 ug/L 95 70-130 sec-Butylbenzene 20.0 19.06 ug/L 95 70-130 Styrene 20.0 18.88 ug/L 94 70-130 tert-Butylbenzene 20.0 18.45 ug/L 92 70-130 1,1,1,2-Tetrachloroethane 20.0 18.05 ug/L 90 70-130 1,1,2,2-Tetrachloroethane 20.0 18.76 ug/L 94 70-130 Tetrachloroethene 20.0 17.78 ug/L 89 70-130 Toluene 20.0 18.31 ug/L 92 70-130 trans-1,2-Dichloroethene 20.0 18.01 ug/L 90 70-130 TestAmerica Nashville Page 35 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 490-410133/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 410133 trans-1,3-Dichloropropene 20.0 19.80 ug/L 99 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec. Limits 1,2,3-Trichlorobenzene 20.0 19.85 ug/L 99 70-130 1,2,4-Trichlorobenzene 20.0 19.15 ug/L 96 70-130 1,1,1-Trichloroethane 20.0 18.26 ug/L 91 70-130 1,1,2-Trichloroethane 20.0 18.30 ug/L 91 70-130 Trichloroethene 20.0 18.51 ug/L 93 70-130 Trichlorofluoromethane 20.0 20.37 ug/L 102 60-140 1,2,3-Trichloropropane 20.0 17.81 ug/L 89 70-130 1,2,4-Trimethylbenzene 20.0 18.48 ug/L 92 70-130 1,3,5-Trimethylbenzene 20.0 18.08 ug/L 90 70-130 Vinyl chloride 20.0 19.56 ug/L 98 60-140 Xylenes, Total 40.0 36.50 ug/L 91 70-130 4-Bromofluorobenzene (Surr)70 -130 Surrogate 98 LCS LCS Qualifier Limits%Recovery 103Dibromofluoromethane (Surr)70 -130 991,2-Dichloroethane-d4 (Surr)70 -130 97Toluene-d8 (Surr)70 -130 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 490-410133/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 410133 Benzene 20.0 19.50 ug/L 97 70-130 3 20 Analyte LCSD LCSD DUnitResultQualifier %Rec Spike Added %Rec. Limits LimitRPD RPD Bromobenzene 20.0 19.11 ug/L 96 70-130 6 20 Bromochloromethane 20.0 19.40 ug/L 97 70-130 2 20 Bromodichloromethane 20.0 19.79 ug/L 99 70-130 3 20 Bromoform 20.0 21.46 ug/L 107 70-130 8 20 Bromomethane 20.0 17.91 ug/L 90 60-140 5 20 Carbon tetrachloride 20.0 19.35 ug/L 97 70-130 1 20 Chlorobenzene 20.0 19.55 ug/L 98 70-130 4 20 Chloroethane 20.0 17.96 ug/L 90 60-140 6 20 Chloroform 20.0 19.22 ug/L 96 70-130 2 20 Chloromethane 20.0 17.09 ug/L 85 60-140 7 20 2-Chlorotoluene 20.0 18.05 ug/L 90 70-130 8 20 4-Chlorotoluene 20.0 19.00 ug/L 95 70-130 4 20 cis-1,2-Dichloroethene 20.0 18.97 ug/L 95 70-130 2 20 cis-1,3-Dichloropropene 20.0 19.91 ug/L 100 70-130 6 20 Dibromochloromethane 20.0 21.35 ug/L 107 70-130 8 20 1,2-Dibromo-3-Chloropropane 20.0 19.39 ug/L 97 70-130 13 20 Dibromomethane 20.0 19.88 ug/L 99 70-130 1 20 1,2-Dichlorobenzene 20.0 20.09 ug/L 100 70-130 11 20 1,3-Dichlorobenzene 20.0 19.95 ug/L 100 70-130 8 20 1,4-Dichlorobenzene 20.0 19.33 ug/L 97 70-130 7 20 Dichlorodifluoromethane 20.0 20.00 ug/L 100 60-140 2 20 1,1-Dichloroethane 20.0 19.02 ug/L 95 70-130 3 20 1,2-Dichloroethane 20.0 19.83 ug/L 99 70-130 4 20 TestAmerica Nashville Page 36 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 490-410133/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 410133 1,1-Dichloroethene 20.0 18.28 ug/L 91 70-130 0 20 Analyte LCSD LCSD DUnitResultQualifier %Rec Spike Added %Rec. Limits LimitRPD RPD 1,2-Dichloropropane 20.0 19.53 ug/L 98 70-130 1 20 1,3-Dichloropropane 20.0 20.01 ug/L 100 70-130 5 20 2,2-Dichloropropane 20.0 20.73 ug/L 104 70-130 4 20 1,1-Dichloropropene 20.0 18.62 ug/L 93 70-130 2 20 Diisopropyl ether 20.0 20.57 ug/L 103 70-130 5 20 Ethanol 800 853.2 ug/L 107 60-140 16 20 Ethylbenzene 20.0 19.56 ug/L 98 70-130 5 20 Hexachlorobutadiene 20.0 22.58 ug/L 113 70-130 8 20 Isopropylbenzene 20.0 19.82 ug/L 99 70-130 6 20 Methylene Chloride 20.0 20.19 ug/L 101 70-130 6 20 Methyl tert-butyl ether 20.0 20.48 ug/L 102 70-130 5 20 Naphthalene 20.0 21.21 ug/L 106 70-130 9 20 n-Butylbenzene 20.0 21.04 ug/L 105 70-130 7 20 N-Propylbenzene 20.0 20.11 ug/L 101 70-130 8 20 p-Isopropyltoluene 20.0 20.34 ug/L 102 70-130 7 20 sec-Butylbenzene 20.0 20.24 ug/L 101 70-130 6 20 Styrene 20.0 19.70 ug/L 99 70-130 4 20 tert-Butylbenzene 20.0 19.88 ug/L 99 70-130 7 20 1,1,1,2-Tetrachloroethane 20.0 19.29 ug/L 96 70-130 7 20 1,1,2,2-Tetrachloroethane 20.0 20.74 ug/L 104 70-130 10 20 Tetrachloroethene 20.0 18.28 ug/L 91 70-130 3 20 Toluene 20.0 19.06 ug/L 95 70-130 4 20 trans-1,2-Dichloroethene 20.0 18.60 ug/L 93 70-130 3 20 trans-1,3-Dichloropropene 20.0 21.24 ug/L 106 70-130 7 20 1,2,3-Trichlorobenzene 20.0 21.48 ug/L 107 70-130 8 20 1,2,4-Trichlorobenzene 20.0 20.80 ug/L 104 70-130 8 20 1,1,1-Trichloroethane 20.0 18.83 ug/L 94 70-130 3 20 1,1,2-Trichloroethane 20.0 19.66 ug/L 98 70-130 7 20 Trichloroethene 20.0 18.84 ug/L 94 70-130 2 20 Trichlorofluoromethane 20.0 18.88 ug/L 94 60-140 8 20 1,2,3-Trichloropropane 20.0 20.19 ug/L 101 70-130 13 20 1,2,4-Trimethylbenzene 20.0 19.80 ug/L 99 70-130 7 20 1,3,5-Trimethylbenzene 20.0 19.15 ug/L 96 70-130 6 20 Vinyl chloride 20.0 18.42 ug/L 92 60-140 6 20 Xylenes, Total 40.0 38.98 ug/L 97 70-130 7 20 4-Bromofluorobenzene (Surr)70 -130 Surrogate 100 LCSD LCSD Qualifier Limits%Recovery 100Dibromofluoromethane (Surr)70 -130 961,2-Dichloroethane-d4 (Surr)70 -130 96Toluene-d8 (Surr)70 -130 TestAmerica Nashville Page 37 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 490-122478-C-2 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 410133 Benzene ND 20.0 19.02 ug/L 95 70-130 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec. Limits Bromobenzene ND 20.0 19.74 ug/L 99 70-130 Bromochloromethane ND 20.0 18.02 ug/L 90 70-130 Bromodichloromethane ND 20.0 18.16 ug/L 91 70-130 Bromoform ND 20.0 17.56 ug/L 88 70-130 Bromomethane ND F2 20.0 12.06 ug/L 60 60-140 Carbon tetrachloride ND 20.0 19.61 ug/L 98 70-130 Chlorobenzene ND 20.0 18.20 ug/L 91 70-130 Chloroethane ND 20.0 19.06 ug/L 95 60-140 Chloroform ND 20.0 18.47 ug/L 92 70-130 Chloromethane ND 20.0 17.76 ug/L 89 60-140 2-Chlorotoluene ND 20.0 20.41 ug/L 102 70-130 4-Chlorotoluene ND 20.0 17.72 ug/L 89 70-130 cis-1,2-Dichloroethene ND 20.0 18.45 ug/L 92 70-130 cis-1,3-Dichloropropene ND 20.0 17.29 ug/L 86 70-130 Dibromochloromethane ND 20.0 18.34 ug/L 92 70-130 1,2-Dibromo-3-Chloropropane ND 20.0 15.07 ug/L 75 70-130 Dibromomethane ND 20.0 17.57 ug/L 88 70-130 1,2-Dichlorobenzene ND 20.0 17.51 ug/L 88 70-130 1,3-Dichlorobenzene ND 20.0 18.38 ug/L 92 70-130 1,4-Dichlorobenzene ND 20.0 17.60 ug/L 88 70-130 Dichlorodifluoromethane ND 20.0 21.57 ug/L 108 60-140 1,1-Dichloroethane ND 20.0 18.72 ug/L 94 70-130 1,2-Dichloroethane ND 20.0 17.60 ug/L 88 70-130 1,1-Dichloroethene ND 20.0 18.71 ug/L 94 70-130 1,2-Dichloropropane ND 20.0 18.13 ug/L 91 70-130 1,3-Dichloropropane ND 20.0 17.25 ug/L 86 70-130 2,2-Dichloropropane ND 20.0 20.81 ug/L 104 70-130 1,1-Dichloropropene ND 20.0 18.76 ug/L 94 70-130 Diisopropyl ether ND 20.0 18.38 ug/L 92 70-130 Ethanol ND 800 636.9 ug/L 80 60-140 Ethylbenzene ND 20.0 18.68 ug/L 93 70-130 Hexachlorobutadiene ND 20.0 22.73 ug/L 114 70-130 Isopropylbenzene ND 20.0 19.18 ug/L 96 70-130 Methylene Chloride ND 20.0 18.47 ug/L 92 70-130 Methyl tert-butyl ether ND 20.0 17.47 ug/L 86 70-130 Naphthalene ND 20.0 18.86 ug/L 94 70-130 n-Butylbenzene ND 20.0 20.16 ug/L 101 70-130 N-Propylbenzene ND 20.0 19.24 ug/L 96 70-130 p-Isopropyltoluene ND 20.0 19.23 ug/L 96 70-130 sec-Butylbenzene ND 20.0 19.62 ug/L 98 70-130 Styrene ND 20.0 18.11 ug/L 91 70-130 tert-Butylbenzene ND 20.0 18.63 ug/L 93 70-130 1,1,1,2-Tetrachloroethane ND 20.0 17.37 ug/L 87 70-130 1,1,2,2-Tetrachloroethane ND 20.0 17.33 ug/L 87 70-130 Tetrachloroethene ND 20.0 17.82 ug/L 89 70-130 Toluene ND 20.0 17.78 ug/L 89 70-130 trans-1,2-Dichloroethene ND 20.0 18.76 ug/L 94 70-130 TestAmerica Nashville Page 38 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 490-122478-C-2 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 410133 trans-1,3-Dichloropropene ND 20.0 17.66 ug/L 88 70-130 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec. Limits 1,2,3-Trichlorobenzene ND 20.0 18.45 ug/L 92 70-130 1,2,4-Trichlorobenzene ND 20.0 18.17 ug/L 91 70-130 1,1,1-Trichloroethane ND 20.0 18.55 ug/L 93 70-130 1,1,2-Trichloroethane ND 20.0 16.95 ug/L 85 70-130 Trichloroethene ND 20.0 18.58 ug/L 93 70-130 Trichlorofluoromethane ND 20.0 21.30 ug/L 106 60-140 1,2,3-Trichloropropane ND 20.0 16.50 ug/L 82 70-130 1,2,4-Trimethylbenzene ND 20.0 18.69 ug/L 93 70-130 1,3,5-Trimethylbenzene ND 20.0 18.16 ug/L 91 70-130 Vinyl chloride ND 20.0 19.80 ug/L 99 60-140 Xylenes, Total ND 40.0 36.69 ug/L 92 70-130 4-Bromofluorobenzene (Surr)70 -130 Surrogate 100 MS MS Qualifier Limits%Recovery 97Dibromofluoromethane (Surr)70 -130 941,2-Dichloroethane-d4 (Surr)70 -130 94Toluene-d8 (Surr)70 -130 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 490-122478-D-2 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 410133 Benzene ND 20.0 19.32 ug/L 97 70-130 2 20 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec. Limits LimitRPD RPD Bromobenzene ND 20.0 20.04 ug/L 100 70-130 2 20 Bromochloromethane ND 20.0 18.18 ug/L 91 70-130 1 20 Bromodichloromethane ND 20.0 19.06 ug/L 95 70-130 5 20 Bromoform ND 20.0 19.48 ug/L 97 70-130 10 20 Bromomethane ND F2 20.0 15.54 F2 ug/L 78 60-140 25 20 Carbon tetrachloride ND 20.0 20.55 ug/L 103 70-130 5 20 Chlorobenzene ND 20.0 18.57 ug/L 93 70-130 2 20 Chloroethane ND 20.0 19.81 ug/L 99 60-140 4 20 Chloroform ND 20.0 18.89 ug/L 94 70-130 2 20 Chloromethane ND 20.0 17.52 ug/L 88 60-140 1 20 2-Chlorotoluene ND 20.0 16.99 ug/L 85 70-130 18 20 4-Chlorotoluene ND 20.0 18.30 ug/L 91 70-130 3 20 cis-1,2-Dichloroethene ND 20.0 19.13 ug/L 96 70-130 4 20 cis-1,3-Dichloropropene ND 20.0 18.48 ug/L 92 70-130 7 20 Dibromochloromethane ND 20.0 20.20 ug/L 101 70-130 10 20 1,2-Dibromo-3-Chloropropane ND 20.0 16.04 ug/L 80 70-130 6 20 Dibromomethane ND 20.0 18.75 ug/L 94 70-130 6 20 1,2-Dichlorobenzene ND 20.0 18.03 ug/L 90 70-130 3 20 1,3-Dichlorobenzene ND 20.0 18.42 ug/L 92 70-130 0 20 1,4-Dichlorobenzene ND 20.0 17.90 ug/L 90 70-130 2 20 Dichlorodifluoromethane ND 20.0 22.19 ug/L 111 60-140 3 20 1,1-Dichloroethane ND 20.0 19.02 ug/L 95 70-130 2 20 1,2-Dichloroethane ND 20.0 18.78 ug/L 94 70-130 6 20 TestAmerica Nashville Page 39 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 490-122478-D-2 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 410133 1,1-Dichloroethene ND 20.0 19.16 ug/L 96 70-130 2 20 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec. Limits LimitRPD RPD 1,2-Dichloropropane ND 20.0 18.79 ug/L 94 70-130 4 20 1,3-Dichloropropane ND 20.0 18.18 ug/L 91 70-130 5 20 2,2-Dichloropropane ND 20.0 21.38 ug/L 107 70-130 3 20 1,1-Dichloropropene ND 20.0 18.96 ug/L 95 70-130 1 20 Diisopropyl ether ND 20.0 19.57 ug/L 98 70-130 6 20 Ethanol ND 800 679.9 ug/L 85 60-140 7 20 Ethylbenzene ND 20.0 19.02 ug/L 95 70-130 2 20 Hexachlorobutadiene ND 20.0 22.26 ug/L 111 70-130 2 20 Isopropylbenzene ND 20.0 19.53 ug/L 98 70-130 2 20 Methylene Chloride ND 20.0 18.92 ug/L 95 70-130 2 20 Methyl tert-butyl ether ND 20.0 18.85 ug/L 93 70-130 8 20 Naphthalene ND 20.0 19.19 ug/L 96 70-130 2 20 n-Butylbenzene ND 20.0 20.60 ug/L 103 70-130 2 20 N-Propylbenzene ND 20.0 19.27 ug/L 96 70-130 0 20 p-Isopropyltoluene ND 20.0 19.60 ug/L 98 70-130 2 20 sec-Butylbenzene ND 20.0 19.80 ug/L 99 70-130 1 20 Styrene ND 20.0 18.97 ug/L 95 70-130 5 20 tert-Butylbenzene ND 20.0 18.83 ug/L 94 70-130 1 20 1,1,1,2-Tetrachloroethane ND 20.0 18.05 ug/L 90 70-130 4 20 1,1,2,2-Tetrachloroethane ND 20.0 18.07 ug/L 90 70-130 4 20 Tetrachloroethene ND 20.0 18.12 ug/L 91 70-130 2 20 Toluene ND 20.0 18.29 ug/L 91 70-130 3 20 trans-1,2-Dichloroethene ND 20.0 18.34 ug/L 92 70-130 2 20 trans-1,3-Dichloropropene ND 20.0 19.20 ug/L 96 70-130 8 20 1,2,3-Trichlorobenzene ND 20.0 19.76 ug/L 99 70-130 7 20 1,2,4-Trichlorobenzene ND 20.0 19.25 ug/L 96 70-130 6 20 1,1,1-Trichloroethane ND 20.0 18.65 ug/L 93 70-130 1 20 1,1,2-Trichloroethane ND 20.0 18.21 ug/L 91 70-130 7 20 Trichloroethene ND 20.0 18.71 ug/L 94 70-130 1 20 Trichlorofluoromethane ND 20.0 21.18 ug/L 106 60-140 1 20 1,2,3-Trichloropropane ND 20.0 17.59 ug/L 88 70-130 6 20 1,2,4-Trimethylbenzene ND 20.0 18.64 ug/L 93 70-130 0 20 1,3,5-Trimethylbenzene ND 20.0 18.27 ug/L 91 70-130 1 20 Vinyl chloride ND 20.0 19.86 ug/L 99 60-140 0 20 Xylenes, Total ND 40.0 38.03 ug/L 95 70-130 4 20 4-Bromofluorobenzene (Surr)70 -130 Surrogate 97 MSD MSD Qualifier Limits%Recovery 103Dibromofluoromethane (Surr)70 -130 961,2-Dichloroethane-d4 (Surr)70 -130 97Toluene-d8 (Surr)70 -130 TestAmerica Nashville Page 40 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Association Summary TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) GC/MS VOA Analysis Batch: 410127 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water SM6200-B490-122245-1 MW-2R Total/NA Water SM6200-B490-122245-2 MW-3R Total/NA Water SM6200-B490-122245-3 MW-4 Total/NA Water SM6200-B490-122245-4 MW-5 Total/NA Water SM6200-B490-122245-5 MW-6 Total/NA Water SM6200-B490-122245-6 MW-7 Total/NA Water SM6200-B490-122245-10 DW-1 Total/NA Water SM6200-BMB 490-410127/7 Method Blank Total/NA Water SM6200-BLCS 490-410127/3 Lab Control Sample Total/NA Water SM6200-BLCSD 490-410127/4 Lab Control Sample Dup Total/NA Water SM6200-B490-122245-5 MS MW-6 Total/NA Water SM6200-B490-122245-5 MSD MW-6 Total/NA Analysis Batch: 410133 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water SM6200-B490-122245-4 MW-5 Total/NA Water SM6200-B490-122245-7 MW-8 Total/NA Water SM6200-B490-122245-8 MW-9 Total/NA Water SM6200-B490-122245-9 MW-10 Total/NA Water SM6200-BMB 490-410133/7 Method Blank Total/NA Water SM6200-BLCS 490-410133/3 Lab Control Sample Total/NA Water SM6200-BLCSD 490-410133/4 Lab Control Sample Dup Total/NA Water SM6200-B490-122478-C-2 MS Matrix Spike Total/NA Water SM6200-B490-122478-D-2 MSD Matrix Spike Duplicate Total/NA TestAmerica Nashville Page 41 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: AECOM Technical Services Inc.TestAmerica Job ID: 490-122245-1 Project/Site: 19847.KDH.EL (NC)SDG: 1610 South Croatan Hwy, Kill Devil Hills, NC Client Sample ID: MW-2R Lab Sample ID: 490-122245-1 Matrix: WaterDate Collected: 02/17/17 10:20 Date Received: 02/18/17 08:50 Analysis SM6200-B AK102/23/17 17:591 TAL NSH410127 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 10 mL 10 mL Client Sample ID: MW-3R Lab Sample ID: 490-122245-2 Matrix: WaterDate Collected: 02/17/17 10:50 Date Received: 02/18/17 08:50 Analysis SM6200-B AK102/23/17 18:261 TAL NSH410127 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 10 mL 10 mL Client Sample ID: MW-4 Lab Sample ID: 490-122245-3 Matrix: WaterDate Collected: 02/17/17 10:10 Date Received: 02/18/17 08:50 Analysis SM6200-B AK102/23/17 18:531 TAL NSH410127 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 10 mL 10 mL Client Sample ID: MW-5 Lab Sample ID: 490-122245-4 Matrix: WaterDate Collected: 02/17/17 11:10 Date Received: 02/18/17 08:50 Analysis SM6200-B AK102/23/17 19:191 TAL NSH410127 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 10 mL 10 mL Analysis SM6200-B 10 410133 02/24/17 08:34 JJR TAL NSHTotal/NA 10 mL 10 mL Client Sample ID: MW-6 Lab Sample ID: 490-122245-5 Matrix: WaterDate Collected: 02/17/17 09:50 Date Received: 02/18/17 08:50 Analysis SM6200-B AK102/23/17 19:461 TAL NSH410127 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 10 mL 10 mL Client Sample ID: MW-7 Lab Sample ID: 490-122245-6 Matrix: WaterDate Collected: 02/17/17 08:15 Date Received: 02/18/17 08:50 Analysis SM6200-B AK102/23/17 20:391 TAL NSH410127 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 10 mL 10 mL TestAmerica Nashville Page 42 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: AECOM Technical Services Inc.TestAmerica Job ID: 490-122245-1 Project/Site: 19847.KDH.EL (NC)SDG: 1610 South Croatan Hwy, Kill Devil Hills, NC Client Sample ID: MW-8 Lab Sample ID: 490-122245-7 Matrix: WaterDate Collected: 02/17/17 08:40 Date Received: 02/18/17 08:50 Analysis SM6200-B JJR02/24/17 01:321 TAL NSH410133 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 10 mL 10 mL Client Sample ID: MW-9 Lab Sample ID: 490-122245-8 Matrix: WaterDate Collected: 02/17/17 09:00 Date Received: 02/18/17 08:50 Analysis SM6200-B JJR02/24/17 01:581 TAL NSH410133 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 10 mL 10 mL Client Sample ID: MW-10 Lab Sample ID: 490-122245-9 Matrix: WaterDate Collected: 02/17/17 09:30 Date Received: 02/18/17 08:50 Analysis SM6200-B JJR02/24/17 02:251 TAL NSH410133 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 10 mL 10 mL Client Sample ID: DW-1 Lab Sample ID: 490-122245-10 Matrix: WaterDate Collected: 02/17/17 11:05 Date Received: 02/18/17 08:50 Analysis SM6200-B AK102/23/17 17:331 TAL NSH410127 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 10 mL 10 mL Laboratory References: TAL NSH = TestAmerica Nashville, 2960 Foster Creighton Drive, Nashville, TN 37204, TEL (615)726-0177 TestAmerica Nashville Page 43 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Method Summary TestAmerica Job ID: 490-122245-1Client: AECOM Technical Services Inc. SDG: 1610 South Croatan Hwy, Kill Devil Hills, NCProject/Site: 19847.KDH.EL (NC) Method Method Description LaboratoryProtocol SMSM6200-B Volatile Organic Compounds TAL NSH Protocol References: SM = "Standard Methods For The Examination Of Water And Wastewater", Laboratory References: TAL NSH = TestAmerica Nashville, 2960 Foster Creighton Drive, Nashville, TN 37204, TEL (615)726-0177 TestAmerica Nashville Page 44 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Certification Summary Client: AECOM Technical Services Inc.TestAmerica Job ID: 490-122245-1 Project/Site: 19847.KDH.EL (NC)SDG: 1610 South Croatan Hwy, Kill Devil Hills, NC Laboratory: TestAmerica Nashville The certifications listed below are applicable to this report. Authority Program EPA Region Certification ID Expiration Date North Carolina (WW/SW)3874State Program 12-31-17 TestAmerica Nashville Page 45 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Page 46 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Page 47 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 1 Huckaba, Jimmy From:Friedman, Michelle <Michelle.Friedman@aecom.com> Sent:Monday, February 20, 2017 12:13 PM To:Huckaba, Jimmy; Salomon, Sherry Cc:Pinsker, Nathan Subject:RE: (Please see note.) TestAmerica Sample Login Confirmation files from 490-122245 19847.KDH.EL (NC) Thank you. At MW-2R, compounds tend to be BDL or near the RL, so dilutions should not be necessary. Hopefully there aren’t any other run issues! Michelle Friedman, P.G. Staff Geologist Environment T 919.461.1422 C 919.619.8470 AECOM 1600 Perimeter Park Drive, Suite 400, Morrisville, NC 27560 T 919.461.1100 F 919.461.1415 From: Huckaba, Jimmy [mailto:jimmy.huckaba@testamericainc.com] Sent: Monday, February 20, 2017 12:40 PM To: Friedman, Michelle; sherry.salomon@testamericainc.com Subject: (Please see note.) TestAmerica Sample Login Confirmation files from 490-122245 19847.KDH.EL (NC) Hello, Attached, please find the Sample Confirmation files for job 490-122245; 19847.KDH.EL (NC) Note: 2 VOAs were received broken in shipment for sample MW-2R. Since we only have 1 VOA received in good condition, we will only be able to run the sample once with no opportunity to run a second time if there are any issues. 1 VOA was received broken in shipment for sample DW-1. Since we received 2 VOAs in good condition, this should not be a problem. Please feel free to contact me or your PM, Sherry Salomon, if you have any questions. Thank you. Please let us know if we met your expectations by rating the service you received from TestAmerica on this project by visiting our website at: Project Feedback JIMMY HUCKABA Project Management Assistant I TestAmerica Nashville THE LEADER IN ENVIRONMENTAL TESTING Tel: 615.726,0177 Page 48 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 2 Reference: [350830] Attachments: 3 Page 49 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 Login Sample Receipt Checklist Client: AECOM Technical Services Inc.Job Number: 490-122245-1 SDG Number: 1610 South Croatan Hwy, Kill Devil Hills, NC Login Number: 122245 Question Answer Comment Creator: Ngo, Phiet List Source: TestAmerica Nashville List Number: 1 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. TrueThe cooler's custody seal, if present, is intact. N/ASample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded. TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. FalseContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. N/ASample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. TestAmerica Nashville Page 50 of 50 2/27/2017 1 2 3 4 5 6 7 8 9 10 11 12 13 AECOM Environment 7-Eleven #19847 Groundwater Monitoring Report March 2017 Appendix C. MW-3/MW-3R, MW-5, and MW-10 Trend Graphs Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:Benzene Ethylbenzene Naphthalene Xylenes C5-C8 Ali C9-C12 Ali C9-C10 Aro Sampling SamplingEventDate 1 8/12/2012 2700 1500 1100 12800 25000 19000 520022/5/2013 430 630 280 2380 5600 5700 1700 3 2/11/2013 330 460 260 1890 4600 4800 1600 4 2/11/2013 91 54 170 178 1600 1400 76058/2/2013 1100 1800 540 4700 8200 14000 4400 6 2/7/2014 400 770 1030 3000 4600 2300 7 8/5/2014 120 360 110 481 1500 230081/21/2015 140 320 160 630 2800 3500 1500 9 7/30/2015 39.4 326 273 411 10 1/14/2016 33.4 158 91.4 151117/25/2016 19.1 59.1 135 22 12 2/17/2017 17.5 38.4 53.8 20.1 13 14 15 16 17 18 19 20 Coefficient of Variation:1.71 1.06 1.04 1.77 1.19 0.90 0.66 Mann-Kendall Statistic (S):-50 -40 -35 -50 -16 -14 -7Confidence Factor:>99.9%99.7%99.7%>99.9%96.9%94.6%80.9% Concentration Trend:Decreasing Decreasing Decreasing Decreasing Decreasing Prob. Decreasing Stable Notes: 1.At least four independent sampling events per well are required for calculating the trend.Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water, 41(3):355-367, 2003. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI Environmental Inc., www.gsi-net.com WELL MW-3/MW-3R CONCENTRATION (ug/L) 22-Mar-17 19847 Kill Devil Hills Well MW-3/MW-3R GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis AECOM 19847 1 10 100 1000 10000 100000 04/12 10/12 05/13 11/13 06/14 12/14 07/15 01/16 08/16 03/17 09/17Concentration(ug/L)Sampling Date Benzene Ethylbenzene Naphthalene Xylenes C5-C8 Ali C9-C12 Ali C9-C10 Aro Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:Benzene Ethylbenzene Naphthalene Xylenes C5-C8 Ali C9-C12 Ali C9-C10 Aro Sampling Sampling Event Date 1 8/2/2013 550 720 330 2930 3200 6300 180022/7/2014 520 700 290 3054 2900 7000 2800 3 8/5/2014 230 440 240 1300 1100 4100 1600 4 1/21/2015 150 530 210 802 1400 3400 120057/31/2015 48.3 416 159 344 6 1/14/2016 27.6 249 161 438 7 7/25/2016 4.73 124 72.4 7082/17/2017 11.1 336 191 497 9 10 11 12 13 14 15 16 17 18 19 20 Coefficient of Variation:1.17 0.47 0.39 1.00 0.49 0.33 0.37 Mann-Kendall Statistic (S):-26 -22 -20 -18 -4 -4 -4Confidence Factor:100.0%99.8%99.3%98.4%83.3%83.3%83.3% Concentration Trend:Decreasing Decreasing Decreasing Decreasing Stable Stable Stable Notes: 1.At least four independent sampling events per well are required for calculating the trend.Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water, 41(3):355-367, 2003. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI Environmental Inc., www.gsi-net.com WELL MW-5 CONCENTRATION (ug/L) 22-Mar-17 19847 Kill Devil Hills Well MW-5 GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis AECOM 19847 1 10 100 1000 10000 05/13 11/13 06/14 12/14 07/15 01/16 08/16 03/17 09/17Concentration(ug/L)Sampling Date Benzene Ethylbenzene Naphthalene Xylenes C5-C8 Ali C9-C12 Ali C9-C10 Aro Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:Benzene Ethylbenzene Naphthalene Xylenes C5-C8 Ali C9-C12 Ali C9-C10 Aro Sampling SamplingEventDate 1 1/21/2015 230 710 320 32027/31/2015 113 553 217 1520 3 1/14/2016 36.5 405 449 595 4 7/25/2016 15.7 5.75 60.2 51.452/17/2017 9.23 90.1 153 124 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Coefficient of Variation:1.15 0.85 0.63 1.14 Mann-Kendall Statistic (S):-10 -8 -4 -4Confidence Factor:99.2%95.8%75.8%75.8% Concentration Trend:Decreasing Decreasing Stable No Trend Notes: 1.At least four independent sampling events per well are required for calculating the trend.Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water, 41(3):355-367, 2003. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI Environmental Inc., www.gsi-net.com WELL MW-10 CONCENTRATION (ug/L) 22-Mar-17 19847 Kill Devil Hills Well MW-10 GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis AECOM 19847 1 10 100 1000 10000 09/14 12/14 04/15 07/15 10/15 01/16 05/16 08/16 11/16 03/17 06/17Concentration(ug/L)Sampling Date Benzene Ethylbenzene Naphthalene Xylenes C5-C8 Ali C9-C12 Ali C9-C10 Aro About AECOM AECOM is built to deliver a better world. We design, build, finance and operate infrastructure assets for governments, businesses and organizations in more than 150 countries. As a fully integrated firm, we connect knowledge and experience across our global network of experts to help clients solve their most complex challenges. From high-performance buildings and infrastructure, to resilient communities and environments, to stable and secure nations, our work is transformative, differentiated and vital. A Fortune 500 firm, AECOM companies have annual revenue of approximately US$18 billion. 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