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Home My WebLink AboutWI0300282_Monitoring (Report)_20170523MARCH 2O17 GROUNDWATER MONITORING REPORT FORMER PRESLAR'S EXXON 901 NC HWY 24/27 MIDLAND, CABARRUS COUNTY, NORTH CAROLINA GROUNDWATER INCIDENT # 13546 NCDOT PROJECT # R-0615B NCDOT WBS # 34348.3.5 UIC PERMIT #WI0300282 Prepared for: North Carolina Department of Transportation Geotechnical Engineering Unit 1589 Mail Service Center Raleigh, NC 27699-1589 Prepared by: Solutions-IES, Inc., a Division of Draper Aden Associates 1101 Nowell Road Raleigh, North Carolina 27607 SIES-DAA Project No. 2014.0009.NDOT May 23, 2017 Michael W. Branson, P.G. Senior Project Manager John E. Palmer, P.G. Senior Hydrogeologist %Solutions-IES a division of 6 Draper Aden Associates TABLE OF CONTENTS 1.0 INTRODUCTION............................................................................................................. I 1.1 SITE BACKGROUND..........................................................................................................1 2.0 GROUNDWATER MONITORING............................................................................... 5 2.1 GROUNDWATER ELEVATIONS....................................................................................... 5 2.2 GROUNDWATER SAMPLING........................................................................................... 5 2.3 GROUNDWATER MONITORING RESULTS................................................................... 6 3.0 CONCLUSIONS............................................................................................................... 8 4.0 REFERENCES..................................................................................................................9 FIGURES Figure 1 Site Location Map Figure 2 Site Map Figure 3 Shallow Groundwater Potentiometric Map — March 2017 Figure 4 Benzene Isoconcentration Map — March 2017 TABLES Table 1 Summary of Groundwater Elevation Data Table 2 Summary of Field Parameters Table 3 Summary of Post -Injection Groundwater Analytical Results Table 4 Summary of Historical Groundwater Analytical Results APPENDICES Appendix A Laboratory Analytical Report Appendix B Groundwater Concentration Trends in Selected Wells i Site Name and Location: Former Preslar's Exxon 901 Hwy 24/27 Midland, North Carolina Facility ID Number: 00-0-0000007704 Latitude and Longitude: 35.265833 North, 80.558333 West Date of Report: May 23, 2017 Land Use Category: Industrial (Highway) UST System Owner: Former Preslar's Exxon Land Owner: North Carolina Department of Transportation Geotechnical Engineering Unit 1589 Mail Service Center Raleigh, North Carolina 27699-1589 Phone: 919-707-6859 Consultant: Solutions-IES, a Division of Draper Aden Associates 1101 Nowell Road Raleigh, North Carolina 27607 Attn: Mr. Mike Branson Phone: 919-873-1060 Release Information: The UST system at the referenced site included one 2,000-gallon and two 3,000-gallon gasoline USTs and one 550-gallon kerosene UST. The gasoline and kerosene tanks were located in two different areas, now occupied by the median of NC Highway 24/27. A Comprehensive Site Assessment indicated that groundwater was contaminated with petroleum constituents. No free product was detected. In 2014, a Corrective Action Plan Addendum that proposed injection of a sulfate substrate was approved. Injections were completed in May 2015 and April 2016 with the results suggesting decreased contaminant concentrations. Seal and Signature of Certifying Licensed Geologist I, Michael W. Branson, a Licensed Geologist for Solutions-IES, Inc., do certify that the information contained in this report is correct and accurate to the best of my knowledge. CARO / Michael W. Branson, P.G. 5 E Al NC License No. 467 467 - 5,: .Ot OG, •5,�. W. Solutions-IES, a Division of Draper Aden Associates, is licensed to practice Carolina. The certification number of the company or corporation is C-379. geology in North ii March 2017 Groundwater Monitoring Report SIES-DAA Project No. 2014.0009.NDOT Former Preslar's Exxon NCDOT WBS # 34348.3.5 Midland, Cabarrus County, NC May 23, 2017 1.0 INTRODUCTION Solutions-IES, Inc., a Division of Draper Aden Associates (SIES), is continuing to implement the approved groundwater remediation program at the Former Preslar's Exxon Site (Site) located at 901 NC Hwy 24/27 in Midland, Cabarrus County, North Carolina (Figure 1). This March 2017 Groundwater Monitoring Report has been prepared for the North Carolina Department of Transportation (NCDOT) Geotechnical Engineering Unit to document the groundwater conditions in accordance with Underground Injection Control (UIC) Program Permit No. WI0300282. It describes the activities and results of the groundwater sampling event that took place in March 2017. 1.1 SITE BACKGROUND Prior to NCDOT acquisition, the Site was operated as a convenience store and gasoline station from 1968 to 1994 (S&ME, 2001). The underground storage tank (UST) system at the former station consisted of four USTs and one pump island with associated product dispensers. The NCDOT purchased the property from Mr. Walter Preslar in 1994, and removed the USTs from the Site during tank closure activities in January 1995. The NCDOT demolished the remaining building on site shortly after the tank closure activities to accommodate widening NC Highway 24/27. After road construction was finished, the grass median between the eastbound and westbound lanes of NC Highway 24/27 contained the former UST basin (Figure 2). In August 1995, S&ME, Inc. (S&ME) completed a receptor survey that identified 13 water supply wells located within 1,500 feet of the site. These wells resulted in the site receiving a high -risk groundwater classification. Subsequent to the classification, the NCDOT successfully negotiated closure of all but two of the wells. Thirteen monitoring wells (Table 1 and Figure 2) have been installed at the Site since the USTs were removed in 1995. A Comprehensive Site Assessment (CSA) completed in August 2001 (S&ME, 2001) identified petroleum contamination in groundwater originating from a probable source area near the former gasoline USTs. A CSA addendum in January 2002 completed the March 2017 Groundwater Monitoring Report SIES-DAA Project No. 2014.0009.NDOT Former Preslar's Exxon NCDOT WBS # 34348.3.5 Midland, Cabarrus County, NC May 23, 2017 groundwater plume delineation (S&ME, 2002a). S&ME completed the soil contamination delineation and prepared a second addendum in November 2002 (S&ME, 2002b). The CSA reported detections of petroleum constituents above 15A NCAC 2L 0.0202 Groundwater Standards (NC 2L Standards) in four of the 13 monitoring wells (MW-1, MW-3, MW-4, and MW-5). Benzene, ethylbenzene, toluene, total xylenes, methyl-tert-butylether (MTBE), isopropylether (IPE), naphthalene, C5-C8 aliphatics, C9-C 18 aliphatics, and C9-C22 aromatics exceeded the NC 2L Standards in one or more of the monitoring wells. The analyses also detected the halogenated compounds chloroform, bromodichloromethane, and dibromochloromethane above NC 2L Standards in groundwater samples collected from monitoring wells MW-3, MW-6, MW-7 and MW-8 located south of NC Highway 24/27. These trihalomethanes in the groundwater were presumed to be the result of well construction activities that used treated municipal water in the well construction process. The CSA concluded that the presence of these halogenated compounds in the groundwater was not likely related to the petroleum -release incident at the Site. In March 2005, SIES prepared a Corrective Action Plan (CAP) for the North Carolina Department of Environment and Natural Resources, now the North Carolina Department of Environmental Quality (NCDEQ) UST Section, Mooresville Regional Office (MRO), that recommended in situ chemical oxidation (ISCO) using an iron- and steam -activated sodium persulfate injection as the remediation alternative (SIES, 2005). From 2005 to 2012, the NCDOT made attempts to reduce the risk classification of the site by abandoning nearby water supply wells and irrigation wells within 1000 feet of the source area. However, a replacement well for one of the closer irrigation wells did not yield sufficient water for the owner's use, so the original irrigation well could not be abandoned and reclassification was not an option. As a result of groundwater sampling throughout this period, SIES determined that the groundwater was in an anaerobic state, not aerobic and ISCO would not be a suitable remedy. Instead, a CAP Addendum (SIES, 2012) compared a sulfate -enhanced bioremediation using EASr" (for anaerobic conditions) with vacuum extraction/air sparging. The CAP Addendum recommended 2 March 2017 Groundwater Monitoring Report SIES-DAA Project No. 2014.0009.NDOT Former Preslar's Exxon NCDOT WBS # 34348.3.5 Midland, Cabarrus County, NC May 23, 2017 the sulfate -enhanced bioremediation as the preferred groundwater remedy. The UST Section MRO issued a Notice of Regulatory Requirements (NORR) to NCDOT dated August 14, 2012, requesting results of pilot testing of the EAS® technology before completing their review of the addendum. SIES implemented the pilot test in June 2012, and submitted the EAS Technology Evaluation Report (SIES, 2013) on January 23, 2013. The UST Section MRO provided approval of the CAP Addendum in a NORR dated August 14, 2013. On March 31, 2015, the NCDOT received Injection Permit W10300282 from the NCDEQ Division of Water Resources (DWR) UIC Program for the installation of 21 injection wells and approval to inject EAS® substrate into the groundwater at the Site. In April 2015, 19 permanent injection wells were installed at the site. Two previously installed pilot study wells were used as injection wells, which brought the total number of injection wells to 21. The initial full-scale injection event was performed on May 18 to 20, 2015, in which 1,113 gallons of EAS® were injected (SIES, 2015). Following the injection, SIES conducted post -injection groundwater monitoring events at 1-, 3-, and 6-month intervals. The analytical results indicated that petroleum compounds were decreasing in the 1- and 3-month intervals, but had increased to pre - injection concentrations at the 6-month interval. Based on these results, SIES and NCDOT requested approval to conduct a second injection event. A second injection event was approved and was conducted in April, 2016 (SIES, 2016). From April 11 to 14, 2016, SIES gravity -fed EAS® into each injection point directly from the 55- gallon drum in which it was shipped. As with the first injection event, 1,113 gallons of EAS® were injected into the 21 injection wells. A 6-month post -injection groundwater monitoring event indicated a reduction in contamination. On June 1, 2016, the NCDEQ issued "North Carolina Petroleum UST Release Corrective Action Phase Project Management: A Calibrated Risk -based Corrective Action Decision & Implementation Guide." This document states that when groundwater contamination is below the Gross Contaminant Levels (GCLs) and is shown to be stable, active remediation may be halted and either MNA continues or the site is closed. Based on the April 2016 data, the 3 March 2017 Groundwater Monitoring Report SIES-DAA Project No. 2014.0009.NDOT Former Preslar's Exxon NCDOT WBS # 34348.3.5 Midland, Cabarrus County, NC May 23, 2017 NCDEQ directive, and personal conversations with the NCDEQ incident manager for this site, the NCDOT was directed that monitoring -only was required for the Site. March 2017 Groundwater Monitoring Report SIES-DAA Project No. 2014.0009.NDOT Former Preslar's Exxon NCDOT WBS # 34348.3.5 Midland, Cabarrus County, NC May 23, 2017 2.0 GROUNDWATER MONITORING The injection permit approved monitoring plan requires groundwater level measurement and sampling at the 13 monitoring wells. The permit also requires that groundwater samples be collected from two water supply wells (WSW-10 and WSW-11). 2.1 GROUNDWATER ELEVATIONS Prior to collecting groundwater level measurements, SIES personnel opened each monitoring well to allow the water level to equilibrate. Field personnel used an electronic water level indicator with a decontaminated down -hole probe to measure water levels in each monitoring well. The depth -to -water measurements were converted to elevations by subtracting the depth - to -water measurement from the top -of -casing elevation that was surveyed by the NCDOT. Table 1 presents the March 2017 water level data and previous water level measurements. The data suggest that seasonal fluctuations of several feet can occur. The groundwater elevation data for wells screened in the shallow aquifer were used to develop a shallow potentiometric surface map for March 2017 (Figure 3). The groundwater contour map suggests that shallow groundwater generally flows to the southeast, which is similar to previous findings. However, because bedrock is present at a depth of about 4 to 6 ft bgs, groundwater flow may be fracture -controlled and variations to the apparent flow direction may be present. 2.2 GROUNDWATER SAMPLING SIES collected groundwater samples using low -flow purging methods after measuring the water level in each monitoring well. While purging, personnel recorded pH, temperature, specific conductance, dissolved oxygen (DO), and oxidation-reduction potential (ORP) (Table 2) until each parameter stabilized or until the wells were nearly purged dry. Prior to collecting the water samples at water supply wells WSW-10 and WSW-11, the pumps in the water supply wells were turned on and left running for approximately 15 minutes to purge the well. This purge time was considered appropriate because the well depths were unknown and the wells were not used M March 2017 Groundwater Monitoring Report SIES-DAA Project No. 2014.0009.NDOT Former Preslar's Exxon NCDOT WBS # 34348.3.5 Midland, Cabarrus County, NC May 23, 2017 regularly; therefore, the water after 15 minutes was considered representative of formation water. Field parameters for the water supply wells were recorded at the time of sampling Groundwater samples from the monitoring wells were collected directly into laboratory -supplied containers via peristaltic pump. Groundwater samples from the water supply wells were collected from spigots directly into the bottles. The samples were stored on ice and transported under chain -of -custody control to Pace Analytical Services (Pace Lab) in Huntersville, North Carolina for analysis of sulfate by EPA Method 300.0 and volatile organic compounds (VOCs) by SM 6200B. 2.3 GROUNDWATER MONITORING RESULTS Table 3 summarizes the results of the target compounds detected since the initial injection was conducted and Table 4 summarizes the historical results of all detections. The applicable NC 2L Standards are included for comparison. The laboratory analytical report for the March 2017 monitoring event is provided in Appendix A. Benzene and naphthalene in samples MW-4 and MW-13 and n-propylbenzene in sample MW-13 were detected above their respective NC 2L Standards. Other constituents detected, but not exceeding the NC 2L Standards in samples MW-4 and MW-13 include ethylbenzene, IPE, toluene, total xylenes, sec-butylbenzene, isopropylbenzene, 1,2,4-trimethylbenzene, and 1,3,5- trimethylbenzene. With the exception of a minor concentration of IPE in sample MW-12, the remaining wells contained no detectable concentrations of VOCs for constituents analyzed. Figure 4 presents an interpretation of the lateral extent of benzene impacts identified in the shallow groundwater. No VOCs were detected in water supply wells WSW-10 and WSW-11. Benzene in MW-1 has shown no Mann -Kendall trend in concentrations since implementation of the full-scale injection program(Appendix B). However, the concentrations of benzene in samples from that well have been below the NC 2L Standards for the last two sampling events. The benzene Mann -Kendall analysis also shows a stable trend in the concentrations in well MW- 13, and a downward trend in concentrations from well MW-4. The naphthalene Mann -Kendall E March 2017 Groundwater Monitoring Report SIES-DAA Project No. 2014.0009.NDOT Former Preslar's Exxon NCDOT WBS # 34348.3.5 Midland, Cabarrus County, NC May 23, 2017 analyses for MW-4 and MW-13 shows no trend and decreasing trend, respectively. The relationships are illustrated on the charts in Appendix B. The laboratory conducted sulfate analysis on all the monitoring well samples collected. The results indicate detections of sulfate in all the monitoring well samples ranging from not detected to 122 milligrams per liter (mg/L). None of these results are above the NC 2L Standard of 250 mg/L for sulfate. For samples from wells MW-1, MW-4, and MW-13 (within the contamination zone), the sulfate concentrations are decreasing. The concentrations in the remainder of the well samples appear stable at or near the naturally -occurring concentrations. The depletion of sulfate in the contamination area indicates microbial action and ongoing natural attenuation. 7 March 2017 Groundwater Monitoring Report SIES-DAA Project No. 2014.0009.NDOT Former Preslar's Exxon NCDOT WBS # 34348.3.5 Midland, Cabarrus County, NC May 23, 2017 3.0 CONCLUSIONS The petroleum source area for the Site is located in the median of NC Highway 24/27. The contaminant plume encompasses the source area as well as a small area along the eastbound right-of-way. Based on the laboratory results presented in Table 3 and the discussion above, the primary constituents above the NC 2L Standards are limited to benzene, n-propylbenzene, and naphthalene. Although other VOCs were detected, their concentrations were below the NC 2L Standards. Based on the available data, shallow groundwater appears to flow to the southeast. Based on the analytical results for the March 2017 sampling event, benzene and naphthalene concentrations in samples from monitoring wells MW-4 and MW-13 continue to be detected above the remediation goals. These constituents continue to show a general downward trend in the injection performance monitoring wells. Therefore, continued monitoring is recommended as discussed below. The next sampling event is scheduled for October 2017. In accordance with the 2016 NCDEQ Decision & Implementation Guide, the site concentrations were compared to the Gross Contaminant Levels (GCLs). The primary concentrations of concern, benzene and naphthalene, are below the GCLs and appear stable or decreasing in the areas of highest concentrations (Appendix B). However, continued monitoring will be required since the site remains a high risk. No active remediation is currently indicated. Approval from the NCDEQ UST Section will be required should additional active remediation activities be necessary. g March 2017 Groundwater Monitoring Report SIES-DAA Project No. 2014.0009.NDOT Former Preslar's Exxon NCDOT WBS # 34348.3.5 Midland, Cabarrus County, NC May 23, 2017 4.0 REFERENCES S&ME, 2001. Comprehensive Site Assessment, Preslar's Exxon, prepared by S&ME, 3118 Spring Forest Road, Raleigh, North Carolina, August 27, 2001. S&ME, 2002a. Comprehensive Site Assessment Addendum, Preslar's Exxon, prepared by S&ME, 3118 Spring Forest Road, Raleigh, North Carolina, January 25, 2002. S&ME, 2002b. Comprehensive Site Assessment Addendum II, Preslar's Exxon, prepared by S&ME, 3118 Spring Forest Road, Raleigh, North Carolina, November 7, 2002. Solutions-IES (SIES), 2005. Corrective Action Plan, Former Preslar's Exxon, prepared by Solutions-IES, Inc., 1101 Nowell Road, Raleigh, North Carolina, March 2005. SIES, 2012. Corrective Action Plan Addendum, Former Preslar's Exxon, prepared by Solutions- IES, Inc., 1101 Nowell Road, Raleigh, North Carolina, March 2005. SIES, 2013. EAS Technology Evaluation Report, prepared by Solutions-IES, Inc., 1101 Nowell Road, Raleigh, North Carolina, January 23, 2013. SIES, 2015. Baseline Groundwater Monitoring Report, Former Preslar's Exxon, 901 Hwy 24127, Midland, Cabarrus County, North Carolina, Groundwater Incident #13546, NCDOT Project # R-0615B, NCDOT WBS # 34348.3.5, prepared by Solutions-IES, Inc., 1101 Nowell Road, Raleigh, North Carolina, January 23, 2013. SIES, 2016. March 2016 Groundwater Monitoring and April 2016 Injection Event Report, Former Preslar's Exxon, 901 Hwy 24127, Midland, Cabarrus County, North Carolina, Groundwater Incident #13546, NCDOT Project # R-0615B, NCDOT WBS # 34348.3.5, prepared by Solutions-IES, Inc., 1101 Nowell Road, Raleigh, North Carolina, May 18, 2016. 9 FIGURES �/ o �� c O 400�3 O � o V Z O w 0 0 IL N��O O O HONE Slid wY < 0 b\ Q -650 Sy1j Nn) >_ co0 N � LU �� 0 7Q9 c��a ' � w x P 650 650 0 o LU V a am w IL o 00 v 24 27 °� O U a � o 0 65 O �� SITE �o 0 O H Z00 0 \muddy Cr r n� �E P CabaPTilS O Q o z o SLEE f yHo Q Pq�ell i650 O C �6� ) CABARRUS=STATION RD \ 1 N co co m a 0 D v REFERENCE: USGS 7.5 MINUTE TOPOGRAPHIC MAP MIDLAND, NC 2013 CONCORD SE, NC 2013 1 `ro v7 li 0 2000 4000LU F, J V0A SCALE IN FEET slim _TT! [� T'SO'Ut'OnS1 `� SITE LOCATION MAP FORMER PRESLAR'S EXXON FIGURE: 1 1101 NowELLRoao Industrial & Environmental Services RALEIGH, NC27607 TEL.: (919) 873-1060 a division of d Draper Aden Associates FAX.: (919) 873-1074 901 NC HWY 24/27 NCDOT PROJECT R-0615B, WBS 34348.3.5 MIDLAND, CABARRUS COUNTY, NORTH CAROLINA Project Files\NCDOT\GeoEnvironmental\3940.07A3.NDOT Preslar's Sampling -Trust & Fund Reimb\CAD\Current Drawings\Preslars Baseline.dwg 0 Z wC) W O � O p O INC HIGHWAY 24/27 ( WEST BOUND LANE) U N W O I0f a WSW-5 b Ha�SE a H USE M W-2 MW-1 MW-5 O �MW-11 MW-10 INC HIGHWAY 24127 (EAST BOUND LANE) MW-13-12 HOUSE 1 7- W LL �I WSW-10 p I L HWu E 00 w �J W a O U 2 WSW-9 U 0f W Q H � U W O 0f a 0 N M W H Q p 0 MW6� / I WSW- QWSW-12 \ I \ / \ � MWO-7 \ 1JVh1 I � I � I \ 0WSW-13 G LEGEND O SHALLOW MONITORING WELL O DEEP MONITORING WELL WATER SUPPLY WELL -- PROPERTY LINE Notes: Base map provided by S&ME, Inc. and Cabarrus County GIS. Monitoring well locations are approximate. 0 150 300 SCALE IN FEET FIGURE: SITE MAP Solutio %ns _�FORMER PRESLAR'S EXXON 1101 NOWELLROAD 901 NC HWY 24/27 2 Industrial & Environmental Services RALEIGH, NC27607 NCDOT PROJECT R-0615B, WBS 34348.3.5 = a division of Draper Aden Associates FAK: (919) 873-1060 d P AX.:(919)873-1074 MIDLAND, CABARRUS COUNTY, NORTH CAROLINA J:\Project Files\NCDOT\GeoEnvironmental\3940.07A3.NDOT Preslar's Sampling -Trust & Fund Reimb\CAD\Current Drawings\Preslars Baseline.dwg LEGEND 1 — — — — Q� \ O SHALLOW MONITORING WELL I O DEEP MONITORING WELL n I WSW-5 I \ 00 WATER SUPPLY WELL Z N HOUSE wo -- PROPERTY LINE H USE 2 CD o —656— GROUNDWATER CONTOUR D I \ �N m APPARENT DIRECTION OF I O 0 GROUNDWATER FLOW I I WSW-6 a 656.85 GROUNDWATER ELEVATION (ft amsl) — — — — — — — — — — J Notes: Base map provided by S&ME, Inc. and Cabarrus County — — — — — — — — — — — — — — — — — — — — — — GIS. Monitoring well locations are approximate. Of H Groundwater flow direction is assumed without M W-2 Y consideration of preferential pathways associated with 655.68 LL Q bedrock. IY Groundwater levels collected March 13, 2017. MW-5 is a deep well and was not used in determining 655.06 contour lines. MW-1 M W- 654.26 w0 75 150 . MW-11 SCALE IN FEET MW-10 NC HIGHWAY 24127 (EAST BOUND LANE) 655.12 M W-3 W-4 M W-9 652.82 w 1;605 654.21 O �O 652.96 O a MW-13 O 652.62 W� ----�--------- 653.1S--MW_12------- a I of I 653 / N WSW-10 I i HOUSE MW-6 O 0 I WSW-11 651.84 I 2/ MW-8 I O 651.85 I � g5� iM :7 / m O / Cn \ 649.67 N N - m \ \ \ ;n \ tl \ \ / J I \\ lL \ FIGURE: SHALLOW GROUNDWATER POTENTIOMETRIC MAP - MARCH 2O17 SolutioFORMER%ns _� PRESLAR'S EXXON 1101 NOWELLROAD 901 NC HWY 24/27 3 Industrial & Environmental Services RALEIGH, NC27607 NCDOT PROJECT R-061513, WBS 34348.3.5 a division of = Draper Aden Associates TEL.: (919) 873-1060 d P FAK: (9 19) 873-1074 MIDLAND, CABARRUS COUNTY, NORTH CAROLINA J:\Project Files\NCDOT\GeoEnvironmental\3940.07A3.NDOT Preslar's Sampling -Trust & Fund Reimb\CAD\Current Drawings\Preslars Baseline.dwg 0 0 z Wo wo mo go zo ~ N U W 0 0 a wY a WEST BOUND LANE) }m m� W WSW-5 HOUSE � � I � �I I WSW-6 - — — — — — — — — — — — — — — — — — — — — — — — — M W-2 of W a am U W - O of TI — — — — — — — — - a I �I 010 N M I W� I WSW - LEGEND O SHALLOW MONITORING WELL Op DEEP MONITORING WELL WATER SUPPLY WELL — — PROPERTY LINE \� BENZENE ISOCONCENTRATION LINE (1 pg/L) p) 46.9 BENZENE CONCENTRATION (Ng/L) aN Notes: C a) Base map provided by S&ME, Inc. and Cabarrus County Cn GIS. Monitoring well locations are approximate. 00 MW-5 is a deep well and non -detect. u! Groundwater samples collected in March 2017. N a 0 75 150 w J_ w SCALE IN FEET IInnMW��- MW-10 0 MW-8 O MW-11 AY 24/27 (EAST BOUND LANE) J -4 MW-9 MW-12 HOUSE / MW-6 O / N MW- / / / / / / / / / 7 / FIGURE: BENZENE ISOCONCENTRATION MAP - MARCH 2O17 Solutio �..� ^ _� FORMER PRESLAR'S EXXON 1s 1101 NDWELLROAD 901 NC HWY 24/27 4 Industrial & Environmental Services RALEIGH, NC27607 NCDOT PROJECT R-0615B, WBS 34348.3.5 a division of P Draper Aden Associates TEL.: (919) 873-1060 d P FAK: (9 19) 873-1074 MIDLAND, CABARRUS COUNTY, NORTH CAROLINA TABLES TABLE 1 Summary of Groundwater Elevation Data Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-0615B, WBS 34348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Well ID Date Installed Date Measured Well Casing Depth (ft bgs) Screened Interval (ft bgs) Bottom of Well (ft bgs) Top of Casing Elevation (ft amsl)' Depth to Water (ft btoc) Groundwater Elevation (ft amsl) MW-1 7/16/1998 7/16/1998 1 663.79 11.00 652.79 7/5/2001 10.40 653.39 12/17/2001 13.72 650.07 6/25/2003 4.54 659.25 1/19/2004 8.74 655.05 7/14/2004 11.14 652.65 2/2/2005 7.77 656.02 12/20/2007 14.59 649.20 12/30/2008 8.08 655.71 3/26/2009 6.14 657.65 10/8/2009 11.93 651.86 4/7/2010 6.35 657.44 10/13/2010 9.34 654.45 4/25/2011 7.55 656.24 8/l/2012 12.97 650.82 4/10/2013 6.89 656.90 10/8/2013 10.04 653.75 4/28/2015 5.65 658.14 6/16/2015 663.04 9.81 653.23 8/11/2015 12.47 650.57 11/16/2015 7.03 656.01 2/29/2016 5.00 658.04 10/17/2016 8.77 654.27 3/13/2017 7.98 655.06 MW-2 8/11/1998 8/11/1998 6 1 6-21.5 25 664.46 9.25 655.21 7/5/2001 10.43 654.03 12/17/2001 14.15 650.31 6/26/2003 4.15 660.31 1/19/2004 8.84 655.62 7/14/2004 11.10 653.36 2/2/2005 7.78 656.68 12/20/2007 14.90 649.56 12/30/2008 8.14 656.32 3/26/2009 6.00 658.46 10/8/2009 11.98 652.48 4/7/2010 6.11 658.35 10/13/2010 9.25 655.21 4/25/2011 7.46 657.00 8/1/2012 12.98 651.48 4/10/2013 6.80 657.66 10/8/2013 9.88 654.58 4/28/2015 5.48 658.98 6/16/2015 663.70 9.61 654.09 8/11/2015 12.35 651.35 11/16/2015 6.91 656.79 2/29/2016 1 4.72 658.98 10/17/2016 8.60 655.10 3/13/2017 8.02 655.68 1 of 6 TABLE 1 Summary of Groundwater Elevation Data Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-0615B, WBS 34348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Well ID Date Installed Date Measured Well Casing Depth (ft bgs) Screened Interval (ft bgs) Bottom of Well (ft bgs) Top of Casing Elevation (ft amsl)' Depth to Water (ft btoc) Groundwater Elevation (ft amsl) MW-3 8/11/1998 8/11/1998 5 5-25 25 663.79 11.00 652.79 7/5/2001 11.04 652.75 12/17/2001 14.13 649.66 6/26/2003 5.92 657.87 1/19/2004 9.41 654.38 7/14/2004 11.94 651.85 2/2/2005 8.50 655.29 12/20/2007 14.95 648.84 12/30/2008 8.82 654.97 3/26/2009 7.07 656.72 10/8/2009 12.62 651.17 4/7/2010 7.33 656.46 10/13/2010 10.12 653.67 4/25/2011 8.40 655.39 8/1/2012 13.73 650.06 4/10/2013 7.72 656.07 10/8/2013 10.85 652.94 4/28/2015 6.81 656.98 6/16/2015 663.02 10.77 652.25 8/11/2015 13.35 649.67 11/16/2015 7.94 655.08 2/29/2016 6.17 656.85 10/17/2016 9.66 653.36 3/13/2017 8.81 654.21 MW-4 8/11/1998 8/11/1998 5 6.5-21.5 1 21.5 1 664.45 12.48 651.97 7/5/2001 12.84 651.61 12/17/2001 15.38 649.07 6/25/2003 7.81 656.64 1/19/2004 11.15 653.30 7/14/2004 13.63 650.82 2/2/2005 10.40 654.05 12/20/2007 16.28 648.17 12/30/2008 10.88 653.57 3/26/2009 8.90 655.55 10/8/2009 14.41 650.04 4/7/2010 9.11 655.34 10/13/2010 12.15 652.30 4/25/2011 10.30 654.15 8/1/2012 15.50 648.95 4/10/2013 9.72 654.73 10/8/2013 12.78 651.67 4/28/2015 8.71 655.74 6/16/2015 663.68 1 12.58 651.10 8/11/2015 15.12 648.56 11/16/2015 10.12 1 653.56 2/29/2016 7.90 655.78 10/17/2016 11.81 651.87 3/13/2017 10.72 652.96 2of6 TABLE 1 Summary of Groundwater Elevation Data Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-0615B, WBS 34348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Well ID Date Installed Date Measured Well Casing Depth (ft bgs) Screened Interval (ft bgs) Bottom of Well (ft bgs) Top of Casing Elevation (ft amsl)' Depth to Water (ft btoc) Groundwater Elevation (ft amsl) MW-5 8/17/1998 8/17/1998 50 50-60 60 664.27 14.15 650.12 7/5/2001 10.10 654.17 12/17/2001 14.80 649.47 6/25/2003 6.02 658.25 1/19/2004 8.87 655.40 7/14/2004 11.84 652.43 2/2/2005 8.98 655.29 12/20/2007 15.61 648.66 12/30/2008 10.53 653.74 3/26/2009 7.47 656.80 10/8/2009 12.61 651.66 4/7/2010 7.00 657.27 10/13/2010 10.36 653.91 4/25/2011 5.48 658.79 8/1/2012 14.15 650.12 4/10/2013 8.66 655.61 10/8/2013 10.89 653.38 4/28/2015 6.67 657.60 6/16/2015 663.52 11.44 652.08 8/11/2015 12.93 650.59 11/16/2015 6.97 656.55 2/29/2016 6.02 657.50 10/17/2016 9.65 653.87 3/13/2017 8.83 654.69 MW-6 7/3/2001 7/6/2001 8 8-18 18 656.79 6.59 650.20 12/17/2001 8.68 648.11 6/25/2003 5.88 650.91 1/19/2004 6.55 650.24 7/14/2004 7.47 649.32 2/2/2005 4.46 652.33 12/20/2007 9.24 647.55 12/30/2008 4.98 651.81 3/26/2009 2.99 653.80 10/8/2009 9.94 646.85 4/7/2010 3.31 653.48 10/13/2010 5.98 650.81 4/25/2011 4.03 652.76 8/1/2012 9.19 647.60 4/10/2013 4.43 652.36 10/8/2013 6.44 650.35 4/28/2015 2.98 653.81 6/16/2015 655.95 6.69 649.26 8/11/2015 9.02 646.93 11/16/2015 4.00 651.95 2/29/2016 2.20 653.75 10/17/2016 5.64 650.31 3/13/2017 4.11 651.84 3 of 6 TABLE 1 Summary of Groundwater Elevation Data Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-0615B, WBS 34348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Well ID Date Installed Date Measured Well Casing Depth (ft bgs) Screened Interval (ft bgs) Bottom of Well (ft bgs) Top of Casing Elevation (ft amsl)' Depth to Water (ft btoc) Groundwater Elevation (ft amsl) MW-7 7/3/2001 7/6/2001 8 8-18 18 652.10 9.90 642.20 12/17/2001 5.52 646.58 6/25/2003 4.13 647.97 1/19/2004 1.58 650.52 7/14/2004 4.48 647.62 2/2/2005 0.73 651.37 12/20/2007 NM NM 12/30/2008 1.35 650.75 3/26/2009 0.50 651.60 10/8/2009 4.09 648.01 4/7/2010 0.65 651.45 10/13/2010 3.08 649.02 4/25/2011 2.61 649.49 8/1/2012 5.82 646.28 4/10/2013 1.00 651.10 10/8/2013 3.20 648.90 4/28/2015 1.43 650.67 6/16/2015 651.30 4.20 647.10 8/11/2015 5.61 645.69 11/16/2015 2.74 648.56 2/29/2016 0.68 650.62 10/17/2016 2.34 648.96 3/13/2017 1.63 649.67 MW-8 7/2/2001 7/5/2001 10 1 12-20 1 20 1 660.73 11.50 649.23 12/14/2001 12.40 648.33 6/25/2003 6.25 654.48 1/19/2004 8.52 652.21 7/14/2004 11.26 649.47 2/2/2005 7.76 652.97 12/20/2007 13.19 647.54 12/30/2008 8.20 652.53 3/26/2009 6.73 654.00 10/8/2009 11.74 648.99 4/7/2010 7.19 653.54 10/13/2010 9.65 651.08 4/25/2011 7.99 652.74 8/1/2012 12.92 647.81 4/10/2013 7.41 653.32 10/8/2013 10.28 650.45 4/28/2015 7.01 653.72 6/16/2015 659.99 1 10.31 649.68 8/11/2015 12.70 647.29 11/16/2015 7.76 652.23 2/29/2016 6.15 653.84 10/17/2016 9.27 650.72 3/13/2017 8.14 1 651.85 4of6 TABLE 1 Summary of Groundwater Elevation Data Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-0615B, WBS 34348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Well ID Date Installed Date Measured Well Casing Depth (ft bgs) Screened Interval (ft bgs) Bottom of Well (ft bgs) Top of Casing Elevation (ft amsl)' Depth to Water (ft btoc) Groundwater Elevation (ft amsl) MW-9 10/22/2001 10/24/2001 10 10-25 25 665.15 16.15 649.00 12/17/2001 16.32 648.83 6/25/2003 9.35 655.80 1/19/2004 11.96 653.19 7/14/2004 14.45 650.70 2/2/2005 11.29 653.86 12/20/2007 17.06 648.09 12/30/2008 11.84 653.31 3/26/2009 9.91 655.24 10/8/2009 15.24 649.91 4/7/2010 10.03 655.12 10/13/2010 13.07 652.08 4/25/2011 11.21 653.94 8/1/2012 16.34 648.81 4/10/2013 10.79 654.36 10/8/2013 13.66 651.49 4/28/2015 9.75 655.40 6/16/2015 664.37 13.43 650.94 8/11/2015 15.95 648.42 11/16/2015 11.04 653.33 2/29/2016 8.82 655.55 10/17/2016 12.75 651.62 3/13/2017 11.55 652.82 MW-10 3/25/2009 3/26/2009 5 5-15 15 662.82 5.51 657.31 10/8/2009 11.82 651.00 4/7/2010 6.16 656.66 10/13/2010 9.21 653.61 4/25/2011 7.41 655.41 8/1/2012 12.87 649.95 4/10/2013 6.72 656.10 10/8/2013 9.90 652.92 4/28/2015 5.41 657.41 6/16/2015 662.96 9.56 653.40 8/11/2015 12.26 650.70 11/16/2015 6.82 656.14 2/29/2016 4.90 658.06 10/17/2016 8.63 654.33 3/13/2017 7.84 655.12 MW-11 3/25/2009 3/26/2009 6 6-16 16 663.85 11.03 652.82 10/8/2009 13.54 650.31 4/7/2010 7.31 656.54 10/13/2010 10.54 653.31 4/25/2011 9.27 654.58 8/1/2012 14.30 649.55 4/10/2013 6.38 657.47 10/8/2013 11.78 652.07 4/28/2015 7.16 656.69 6/16/2015 663.97 11.56 652.41 8/11/2015 13.85 650.12 11/16/2015 6.85 657.12 2/29/2016 5.88 658.09 10/17/2016 10.39 65 3/13/2017 9.71 654.26 TABLE 1 Summary of Groundwater Elevation Data Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-0615B, WBS 34348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Well ID Date Installed Date Measured Well Casing Depth (ft bgs) Screened Interval (ft bgs) Bottom of Well (ft bgs) Top of Casing Elevation (ft amsl)' Depth to Water (ft btoc) Groundwater Elevation (ft amsl) MW-12 3/25/09 3/26/2009 9 9-19 19 664.61 10.43 654.18 10/8/2009 15.55 649.06 4/7/2010 10.62 653.99 10/13/2010 13.57 651.04 4/25/2011 11.75 652.86 8/1/2012 16.83 647.78 4/10/2013 11.31 653.30 10/8/2013 14.20 650.41 4/28/2015 10.01 654.60 6/16/2015 664.72 14.04 650.68 8/11/2015 16.52 648.20 11/16/2015 11.61 653.11 2/29/2016 9.46 655.26 10/17/2016 13.25 651.47 3/13/2017 12.10 652.62 MW-13 3/25/09 3/26/2009 9 9-19 19 663.22 7.45 655.77 10/8/2009 13.99 649.23 4/7/2010 8.93 654.29 10/13/2010 11.65 651.57 4/25/2011 9.81 653.41 8/1/2012 15.09 648.13 4/10/2013 9.23 653.99 10/8/2013 12.33 650.89 4/28/2015 8.29 654.93 6/16/2015 663.35 12.18 651.17 8/11/2015 14.75 648.60 11/16/2015 9.43 653.92 2/29/2016 7.75 655.60 10/17/2016 11.19 652.16 3/13/2017 10.19 653.16 Notes: ft bgs: feet below ground surface ft amsl: feet above mean sea level ft btoc: feet below top of casing Data before 6/25/03 are from Comprehensive Site Assessment Addendum dated January 25, 2002 prepared by S&ME, Inc. NM - Not Measured, MW-7 could not be located during the 12/20/07 sampling event. 1 - All monitoring, injection and water supply well locations were surveyed by NCDOT on June 16, 2015. Top of casing elevations were determined for all monitoring wells 6 of 6 TABLE 2 Summary of Field Parameters Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-061511, WBS 34348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Well ID Date PH (SU) Temperature (1C) Specific Conductivity (µS/cm) DO (-g/L) ORP (MV) Baseline 6.43 20.32 625 0.36 76.2 6/16/2015 6.21 23.38 1155 0.18 -25.2 8/10/2015 5.29 21.30 848 0.76 65.9 MW-1 11/16/2015 6.49 21.17 1058 0.46 -34.4 3/1/2016 6.82 17.49 1337 0.23 0.9 10/17/2016 6.41 23.24 700 0.25 21.0 3/14/2017 6.37 17.1 454 1.16 33.2 Baseline 5.92 18.32 489 0.65 84.8 6/16/2015 5.75 21.41 441 0.38 29.2 8/11/2015 6.50 20.77 474 0.41 27.1 MW-2 11/16/2015 6.61 19.60 452 0.94 108.5 3/1/2016 6.62 16.03 512 1.12 105.9 10/18/2016 6.51 21.52 415 0.63 141.2 3/13/2017 6.55 14.1 420.2 2.21 173.0 MW-3 Baseline 6.41 17.60 809 0.74 101.5 6/17/2015 5.60 19.75 886 0.19 31.8 8/11/2015 6.37 20.17 801 0.22 134.7 11/16/2015 6.64 19.60 734 0.34 96.8 3/1/2016 6.74 16.63 842 0.35 128.4 10/18/2016 6.51 21.87 736 0.26 2.1 3/14/2017 6.48 16.2 816 0.29 -37.7 MW-4 Baseline 6.30 18.11 759 0.56 87.6 6/17/2015 6.46 19.29 998 0.93 -64.8 8/11/2015 6.30 20.62 1047 0.17 -174.5 11/17/2015 6.43 17.57 566 0.30 -88.0 3/1/2016 6.42 17.70 988 0.21 -113.1 10/18/2016 6.22 21.26 610 0.26 -243.0 3/13/2017 6.29 13.4 569.4 0.80 -35.1 Baseline 6.76 21.91 655 3.96 135.4 MW-5 6/16/2015 7.00 27.30 658 0.43 -2.7 8/11/2015 6.73 20.72 634 2.01 24.1 11/16/2015 7.28 20.04 637 2.26 71.9 2/29/2016 7.06 1 18.63 1 699 1 1.88 68.6 10/18/2016 Dry 3/13/2017 Dry 10/18/2016 6.41 16.01 865 0.29 71.2 6/16/2015 6.44 19.27 992 0.87 10.7 MW-6 8/11/2015 6.50 18.33 856 0.19 -179.7 11/16/2015 6.67 16.90 897 0.31 -66.2 2/29/2016 6.20 14.78 1 812 1 0.38 113.4 10/18/2016 1 6.57 18.93 712 0.45 -54.4 3/14/2017 1 6.69 13.6 1046 0.76 -56.3 1 of 3 TABLE 2 Summary of Field Parameters Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-061511, WBS 34348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Well ID Date pH (SU) Temperature (°C) Specific Conductivity (µS/cm) DO (mg/L) ORP (mV) MW-7 Baseline 5.57 14.91 534 0.17 117.5 6/16/2015 6.25 18.79 551 1.05 149.5 8/11/2015 6.35 18.03 513 0.29 92.5 11/16/2015 6.79 16.99 773 0.49 23.2 2/29/2016 6.11 14.74 539 0.63 128.1 10/17/2016 6.23 19.02 460 0.77 102.9 3/14/2017 6.41 12.6 509.7 1.01 39.8 Baseline 6.02 17.23 640 0.80 147.5 6/16/2015 6.17 21.24 656 1.83 149.1 8/11/2015 6.51 19.98 594 0.56 -12.5 MW-8 8/16/2015 6.49 19.14 524 3.37 107.8 2/29/2016 6.21 18.37 524 1.60 125.5 10/17/2016 6.47 22.09 685 0.96 142.5 3/14/2017 6.57 15.8 729 1.75 52.4 Baseline 6.70 17.47 1 559 2.68 39.9 MW-9 6/16/2015 6.42 25.05 577 2.05 76.5 8/11/2015 6.32 20.32 572 0.69 13.0 11/17/2015 6.77 18.50 219 2.45 102.1 3/1/2016 7.21 18.15 678 1.13 -11.3 10/18/2016 6.69 20.46 560 0.18 150.7 3/14/2017 6.81 15.0 488.7 2.28 134.9 Baseline 6.14 18.50 409 5.23 104.8 MW-10 6/16/2015 5.43 22.12 521 5.85 31.6 8/10/2015 5.66 24.56 436 3.63 51.7 11/16/2015 6.28 21.84 415 1.98 45.8 3/1/2016 6.63 17.35 848 2.31 19.5 10/17/2016 6.23 24.63 648 0.88 279.3 3/14/2017 6.25 15.2 555 2.01 53.9 Baseline 6.78 18.10 882 0.31 123.4 MW-11 6/16/2015 6.09 23.70 882 0.26 36.4 8/10/2015 6.30 25.31 887 0.80 5.0 11/16/2015 6.98 20.88 854 0.41 -1.8 3/1/2016 7.28 16.61 835 1.38 3 10/17/2016 6.76 24.28 791 0.71 139.8 3/14/2017 6.80 15.8 743 0.77 40.7 MW-12 Baseline 6.44 16.88 1526 0.15 30.4 6/16/2015 6.39 22.70 1531 0.63 5.9 8/11/2015 6.06 19.81 1333 0.84 7.0 11/17/2015 6.75 18.14 1450 0.45 -69.5 2/29/2016 6.44 16.08 1693 0.32 51.9 10/18/2016 6.66 20.57 1117 0.22 -40.5 3/14/2017 6.77 14.1 1181 0.90 -22.3 2 of 3 TABLE 2 Summary of Field Parameters Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-061511, WBS 34348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Well ID Date pH (SU) Temperature (1C) Specific Conductivity (µS/cm) DO (-g/L) ORP (mV) Baseline 6.39 16.86 1075 0.16 13.7 6/17/2015 6.16 21.01 1043 0.24 -8.4 8/11/2015 6.51 20.26 1212 0.18 -210.4 MW-13 11/17/2015 6.68 18.32 677 0.23 -88.3 3/1/2016 6.51 15.38 1231 0.29 -90.3 10/18/2016 6.52 21.22 900 0.28 -106.8 3/14/2017 6.56 15.7 926 0.29 -172.1 Notes: SU = Standard units °C = degrees centigrade µS/cm = Microsiemens per centimeter DO = Dissolved oxyger mg/L = milligrams per liter ORP = Oxidation Reduction Potential my = Millivolts Baseline samples collected April 28, 2015. 3 of 3 TABLE 3 Summary of Post -Injection Groundwater Analytical Results Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-O61513, WBS 34348.3.5 Incident#13543 SIES-DAA Project No. 2O14.O0O9.NDOT Analytical Method VOCs by EPA Method 601/602 Extended (ug/L) EPA Method 300.0 (mg/L) Well ID Date Benzene Ethylbenzene MTBE IPE Toluene Total Xylenes sec-Butylbenzene Isopropylbenzene 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene n-Propylbenzene Naphthalene Sulfate 15A NCAC 2L Standards 1 600 20 70 600 500 70 70 400 400 70 6 250 Injection Performance Monitoring Wells 5/5/2015 Baseline 15.0 17.0 1.8 15.1 1.5 5.2 NA NA NA NA NA <2.0 35.3 6/16/2015 Post Injection 5.3 4.2 <1.0 <1.0 <1.0 2.7 NA NA NA NA NA 3.1 461 8/11/2015 Post Injection 15.7 19.7 <0.5 2.4 0.73 <0.5 1.5 7.2 4.3 <0.5 4.6 6 210 MW-1 11/16/2015 Post Injection 4.0 7.1 <1.0 <1.0 0.61 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 2.4 313 3/1/2016 Post Injection 1.3 2.6 <LO <1.0 <0.5 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 219 10/17/2016 Post Injection <0.5 0.56 <0.5 0.51 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 124 3/14/2017 <0.5 <0.5 <0.5 1 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 1 55.8 5/5/2015 Baseline 503 228 <5.0 23.2 221 598 NA NA NA NA NA 33.9 3.3 6/16/2015 Post Injection 733 440 <5.0 38 266 694 NA NA NA NA NA 65.2 19.5 8/11/2015 Post Injection 960 644 4.8 91.9 330 962 <2.5 25.2 419 71.1 64.3 125 <2.0 MW-4 11/17/2015 Post Injection 419 609 <2.5 <5.0 162 927 <2.5 <2.5 <2.5 <2.5 <2.5 118 <2.0 3/1/2016 Post Injection 159 202 <2.5 <5.0 71 258 <2.5 <2.5 <2.5 <2.5 <2.5 19.4 70.3 10/18/2016 Post Injection 287 434 <2.0 8.5 53.7 241.5 1 <2.0 18.0 196 15.3 46.1 20.1 2.4 3/13/2017 155 319 <1.2 7.4 1 29.8 154.6 2.2 14.3 174 15.0 38.8 27.2 <2.0 5/5/2015 Baseline 88.4 434 <1.0 4.9 95.1 846 NA NA NA NA NA 286 7.5 6/16/2015 Post Injection 40.8 179 <1.0 1.8 23.4 369 NA NA NA NA NA 91.2 33.6 8/11/2015 Post Injection 171 694 1 8.3 84.1 1113 <0.5 69.8 1150 102 189 325 53.8 MW-13 11/16/2015 Post Injection 15.3 152 <1.0 <1.0 10.6 221 <1.0 <1.0 <I.0 <1.0 <I.0 68.2 6.2 3/1/2016 Post Injection 46.9 333 <LO <1.0 22.9 426 <1.0 <1.0 <LO <1.0 <L0 61.2 23.4 10/18/2016 Post Injection 17.9 137 <1.0 0.86 3.2 66.4 3.7 22.8 136 8.2 56.6 29.9 21.4 3/14/2017 26.6 182 1 <0.5 1 1.3 1 4.6 1 59.0 1 4.7 29.4 187 8.8 76.1 17.9 1 3.4 Perimeter Compliance Wells 5/5/2015 Baseline <1.0 <1.0 <I.0 <1.0 <LO <2.0 NA NA NA NA NA <2.0 21.2 6/16/2015 Post Injection <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 22.2 8/11/2015 Post Injection <0.5 <0.5 <I.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 21.8 MW-2 11/16/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 21.7 3/1/2016 Post Injection <0.5 <0.5 <I.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 23.4 10/18/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 21.2 3/13/2017 <0.5 <0.5 <0.5 1<0.5 <0.5 1 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 22.8 5/5/2015 Baseline <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 30.0 6/16/2015 Post Injection <I.0 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 53.5 8/11/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 77.5 MW-3 11/16/2015 Post Injection <0.5 <0.5 <I.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 39.3 3/1/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 47.3 10/18/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 94.6 3/14/2017 <0.5 <0.5 <0.5 <0.5 <OS <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 122 1 of 4 TABLE 3 Summary of Post -Injection Groundwater Analytical Results Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-061513, WBS 34348.3.5 Incident#13543 SIES-DAA Project No. 2014.0009.NDOT Analytical Method VOCs by EPA Method 601/602 Extended (ug/L) EPA Method 300.0 (mg/L) Well ID Date Benzene Ethylbenzene MTBE IPE Toluene Total Xylenes sec-Butylbenzene Isopropylbenzene 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene n-Propylbenzene Naphthalene Sulfate 15A NCAC 2L Standards 1 600 20 70 600 500 70 70 400 400 70 6 250 5/5/2015 Baseline <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 8.5 6/16/2015 Post Injection <I.0 <1.0 <I.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 15.0 8/11/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 27.0 MW-6 11/16/2015 Post Injection <0.5 <0.5 <I.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 43.2 3/l/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 36.8 10/18/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 40.1 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 27.9 5/5/2015 Baseline <1.0 <1.0 <1.0 <1.0 <LO <2.0 NA NA NA NA NA <2.0 29.8 6/16/2015 Post Injection <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 30.1 8/11/2015 Post Injection <0.5 <0.5 <I.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 30.2 MW-7 11/16/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 41.6 3/1/2016 Post Injection <0.5 <0.5 <I.0 <0.5 1 <0.5 <1.0 1 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 28.3 10/17/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 26.0 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 25.7 5/5/2015 Baseline <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 31.9 6/16/2015 Post Injection <1.0 <1.0 <I.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 33.6 8/11/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 38.8 MW-8 11/16/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 37.5 3/1/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 44.9 10/17/2016 Post Injection <0.5 <0.5 <1.0 <0.5 1 <0.5 <1.0 1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 90.1 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 102 5/5/2015 Baseline <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 8.5 6/16/2015 Post Injection <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 12.4 8/11/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 16.3 MW-9 11/16/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 3.2 3/1/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 9.1 10/18/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 24.2 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 9.5 5/5/2015 Baseline <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 42.0 6/16/2015 Post Injection <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 73.7 8/11/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 41.8 MW-10 11/16/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 41.0 3/1/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 54.5 10/17/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 39.6 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 39.6 2 of 4 TABLE 3 Summary of Post -Injection Groundwater Analytical Results Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-061513, WBS 34348.3.5 Incident#13543 SIES-DAA Project No. 2014.0009.NDOT Analytical Method VOCs by EPA Method 601/602 Extended (ug/L) EPA Method 300.0 (mg/L) Well ID Date Benzene Ethylbenzene MTBE IPE Toluene Total Xylenes sec-Butylbenzene Isopropylbenzene 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene n-Propylbenzene Naphthalene Sulfate 15A NCAC 2L Standards 1 600 20 70 600 500 70 70 400 400 70 6 250 5/5/2015 Baseline <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 64.4 6/16/2015 Post Injection <I.0 <1.0 <I.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 41.8 8/11/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 49.0 MW-11 11/16/2015 Post Injection <0.5 <0.5 <I.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 45.1 3/l/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 53.5 10/17/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 29.9 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 33.9 5/5/2015 Baseline <1.0 <1.0 <1.0 <1.0 <LO <2.0 NA NA NA NA NA <2.0 24.7 6/16/2015 Post Injection <1.0 <1.0 <1.0 1.3 <1.0 <2.0 NA NA NA NA NA <2.0 14.3 8/11/2015 Post Injection <0.5 <0.5 <I.0 <0.5 <0.5 <1.0 <0.5 1 <0.5 1 <0.5 1 <0.5 1 <0.5 1 <2.0 1 9.2 MW-12 11/16/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 57.7 3/1/2016 Post Injection <0.5 <0.5 <L0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 34.6 10/18/2016 Post Injection <0.5 <0.5 <1.0 1.7 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 27.4 3/14/2017 <0.5 <0.5 <0.5 0.85 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 11.1 Deep Monitoring Well 5/5/2015 Baseline 4.7 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 38.0 6/16/2015 Post Injection <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 NA NA NA NA NA <5.0 36.6 8/11/2015 Post injection <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 39.5 MW-5 11/16/2015 Post Injection 2.9 <0.5 <1.0 <0.5 0.75 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 24.6 3/1/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 36.9 10/17/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 37.8 3/13/2017 <0.51 <0.5 1 <0.5 1 <0.5 1 <0.5 1 <1.0 1 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 32.2 3 of 4 TABLE 3 Summary of Post -Injection Groundwater Analytical Results Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-061513, WBS 34348.3.5 Incident#13543 SIES-DAA Project No. 2014.0009.NDOT Analytical Method VOCs by EPA Method 601/602 Extended (ug/L) EPA Method 300.0 (mg/L) Well ID Date Benzene Ethylbenzene MTBE IPE Toluene Total Xylenes sec-Butylbenzene Isopropylbenzene 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene n-Propylbenzene Naphthalene Sulfate 15A NCAC 2L Standards 1 600 20 70 600 500 70 70 400 400 70 6 250 Water Supply Wells 5/5/2015 Baseline <I.0 <1.0 <1.0 <LO <1.0 <2.0 NA NA NA NA NA <2.0 38.1 WSW-9 6/16/2015 Post Injection - -- - -- -- -- -- -- -- -- -- -- -- 5/5/2015 Baseline -- -- -- -- -- -- -- -- -- -- -- -- -- 6/16/2015 Post Injection <I.0 <1.0 <I.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 39.2 8/11/2015 Post Injection <0.5 <0.5 <I.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 38.4 WSW-10 11/16/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 38.6 3/1/2016 Post Injection <0.5 <0.5 <I.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 37.8 10/18/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 34.8 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 NA 5/5/2015 Baseline <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 32.1 6/16/2015 Post Injection <I.0 <1.0 <1.0 <1.0 <1.0 <2.0 NA NA NA NA NA <2.0 115 8/11/2015 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 178 WSW-11 11/16/2015 Post Injection <0.5 <0.5 <I.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 104 3/1/2016 Post Injection <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 78 10/18/2016 Post Injection <0.5 <0.5 <I.0 1 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 118 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 NA 5/5/2015 Baseline -- -- -- -- -- -- -- -- -- WSW -12 6/16/2015 Post Injection -- -- - - Notes: ug/L = micrograms per liter mg/L = milligrams per liter Bold values indicate detected constituents; shaded values exceed the NCAC 2L Groundwater Standards. NA - Not analyzed -- Water supply wells WSW-9 and WSW-12 were removed from the monitoring plan on August 21, 2015. 4 of 4 TABLE 4 Summary of Historical Groundwater Analytical Results Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-061513, WBS 343348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Analytical Method VOCs by EPA Method 6200B (ug/L) Well ID Start Date Collected 1,2- Dichloroethane 1,2- Dichloropropane Benzene Ethylbenzene MTBE IPE Toluene Total xylenes sec-Rulylbenzene Isopropylbenzene 1,2,4- Trimethylbenzene 1,3,5- Trimethylbenzene n-Propylbenzene Naphthalene 15A NCAC 2L Standards 0.4 0.6 1 600 20 70 600 500 70 70 400 400 70 6 MONITORING WELLS MW-1 7/17/1998 <1.0 ND 241 82.5 6,580 2,300 103 1 145 I Not included on target compound list until August 2015 1 NA 7/5/2001 <1.0 ND 1000 310 1,300 1,300 85 170 20 6/25/2003 <1.0 ND 490 69 1,200 1,300 10 47 NA 1/20/2004 <10 ND IN 55 180 350 <10 <30 <50 7/14/2004 <1.0 <1.0 270 270 69 140 26 140 57 2/2/2005 <1.0 <1.0 200 180 58 190 10 81 33 12/20/2007 <50 <50 190 <50 102 728 <50 <100 <100 12/30/2008 <1.0 <1.0 120 61 34 120 4.4 17.3 9.2 10/8/2009 <1.0 <1.0 480 290 49 310 38 195 48 4/7/2010 <1.0 <1.0 200 170 34 160 25 61 19 10/13/2010 <1.0 <1.0 280 240 60 280 8.1 65.6 39 4/25/2011 <1.0 <1.0 77.4 53.5 41.9 167 5.4 26.5 7.9 8/2/2012 <1.0 <1.0 223 193 4.3 36.6 12.7 37.3 27.2 4/10/2013 <1.0 <1.0 18.5 10.5 <I.0 3.7 <1.0 <2.0 <2.0 10/8/2013 <1.0 <1.0 59.1 32 3.0 14.4 1.4 2.4 2.9 5/4/2015 <1.0 <1.0 151 17 1.8 15.1 1.5 1 5.2 12.0 Full Scale Injection 6/16/2015 <1.0 <1.0 5.3 4.2 <1.0 <1.0 <1.0 2.7 <2.0 8/11/2015 <0.5 <0.5 15.7 19.7 <0.5 2.4 0.73 <0.5 1.5 7.2 4.3 <0.5 4.6 6 11/16/2015 <0.5 <0.5 4 7.1 <0.5 <0.5 0.61 <1.0 <0.5 1.5 1.6 <0.5 0.69 2.4 3/1/2016 <0.5 <0.5 1.3 2.6 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 10/17/2016 <0.5 <0.5 <0.5 0.6 <0.5 0.51 <0.5 <0.5 <0 .5 <0.5 <0.5 <0.5 <0.5 <0.5 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 MW 2 8/11/1998 <1.0 ND <1.0 <LO <I.0 <LO <1.0 <LO Not included on target compound list until August 2015 1 NA 7/5/2001 <I.0 ND <1.0 <LO <I.0 <LO <1.0 I <Lo <5.3 6/26/2003 <I.0 ND <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 NA 1/20/2004 <I.0 ND <1.0 <1.0 <5.0 <5.0 <LO <3.0 <5.0 7/14/2004 <I.0 <I.0 <1.0 <I.0 <5.0 <5.0 <I.0 2.3 J <5.0 2/2/2005 <I.0 <I.0 <1.0 <I.0 <I.0 <1.0 <I.0 <I.0 12.0 12/20/2007 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 12/30/2008 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 10/8/2009 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 4/7/2010 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 1 <2.0 <1.0 10/13/2010 <1.0 <1.0 <0.50 <1.0 <5.0 <5.0 <1.0 <1.0 <5.0 4/25/2011 <1.0 <1.0 <1.0 4.3 <1.0 <1.0 <1.0 3.5 4.3 8/2/2012 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 4/10/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 10/8/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 5/4/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 6/16/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/11/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 I <1.0 1 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 11/16/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 Q.0 3/1/2016 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 Q.0 10/18/2016 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 3/13/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 1 of 8 TABLE 4 Summary of Historical Groundwater Analytical Results Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-0615B, WBS 343348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Analytical Method VOCs by EPA Method 6200B (ug/L) Well ID Start Date Collected 1,2- Dichloroethane 1,2- Dichloropropane Benzene Ethylbenzene MTBE IPE Toluene Total xylenes sec-Butylbenzene Isopropylbenzene 1,2,4- Trimethylbenzene 1,3,5- Trimethylbenzene n_Propylbenzene Naphthalene 15A NCAC 2L Standards 0.4 0.6 t 600 20 70 600 500 70 70 400 400 70 6 MW-3 8/11/1998 <I.0 ND <1.0 <1.0 432 190 5.6 52.6 Not included on target compound list until August 2015 NA 7/5/2001 <I.0 ND <1.0 <1.0 40 24 <1.0 <1.0 <5.1 6/26/2003 <1.0 ND <1.0 <1.0 30 32 <1.0 <3.0 NA 1/20/2004 <1.0 ND <1.0 <1.0 5.6 3.3 J <1.0 <3.0 5.9 7/14/2004 <1.0 <1.0 <1.0 <1.0 3.3 J <5.0 <1.0 2.1 J 4.5 J 2/2/2005 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 10 12/20/2007 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 12/30/2008 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 2.5 10/8/2009 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 4/7/2010 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 10/13/2010 <1.0 <1.0 <0.50 <1.0 <5.0 <5.0 <1.0 <1.0 <5.0 4/25/2011 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/1/2012 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1 <2.0 <2.0 4/10/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 10/8/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 5/5/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 6/16/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/11/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 11/16/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 3/1/2016 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 10/18/2016 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 MW 4 8/11/1998 <1.0 ND 762 180 1,780 3,440 968 637 1 Not included on target compound list until August 2015 1 1 NA 7/5/2001 <1.0 ND 3,100 590 500 5,000 810 1,560 50 6/25/2003 <1.0 ND 4,100 1,600 220 2,300 2,800 4,400 NA 1/20/2004 <40 ND 4,500 1,400 190 J 1,600 9,400 8,200 520 7/14/2004 10 5.OJ 7,000 3,400 290 2,800 13,000 17,000 1,700 2/2/2005 <500 <500 6,500 4,300 <500 3,300 15,000 18,000 3,100 12/20/2007 <50 1 <50 2,520 2,520 1 <50 <50 2,540 8,100 744 12/30/2008 <10 <10 250 810 <50 94 390 2,460 270 10/8/2009 <10 <10 1,600 1,600 <50 320 620 4,160 390 4/7/2010 <10 <10 1,100 1,400 <50 310 1,300 4,700 410 10/13/2010 <1.0 <1.0 600 1,100 180 200 440 3,190 410 4/25/2011 <5.0 <5.0 749 631 <5.0 50.9 519 1 2,070 176 6/21/2012 Pilot Study HAS® Injection 8/1/2012 <5.0 <5.0 1,100 790 <5.0 72.9 504 2,020 226 4/10/2013 <2.0 :2.0 238 173 <2.0 12.3 107 413 29.8 10/8/2013 <2.0 <2.0 924 782 2.5 42.6 583 2,050 198 5/5/2015 <5 <5 503 228 <5 23.2 221 598 33.9 Full Scale Injection 6/16/2015 <5 <5 733 440 <5 38 266 694 65.2 8/11/2015 <2.5 <2.5 960 644 4.8 91.9 330 962 <2.5 25.2 419 71.1 64.3 125 11/17/2015 <2.0 <2.0 419 609 <2.0 15.8 162 927.3 <2.0 33.9 <8.0 <8.0 87 118 3/1/2016 <0.5 <0.5 159 202 <0.5 4.9 71 258.4 <0.5 11.2 166 17.8 32.5 19.4 l0/18/2016 <0.5 <0.5 287 434 <2 8.5 53.7 241.5 <2 18.0 196.0 15.3 46.1 20.1 3/13/2017 <1.2 <1.2 155 319 <1.2 7.4 29.8 154.6 2.2 14.3 174 15.0 38.8 27.2 2of8 TABLE 4 Summary of Historical Groundwater Analytical Results Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-0615B, WBS 343348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Analytical Method VOCs by EPA Method 6200B (ug/L) Well ID Start Date Collected 1,2- Dichloroethane 1,2- Dichloropropane Benzene Ethylbenzene MTBE IPE Toluene Total xylenes sec-Bu[y[benzene Isopropylbenzene 1,2,4- Trimethylbenzene 1,3,5- Trimethylbenzene n-Propylbenzene Naphthalene 15A NCAC 2L Standards 0.4 0.6 1 600 20 70 600 500 70 70 400 400 70 6 MW-5 (deep) 8/17/1998 <I.0 ND 1.5 3.2 12.3 4.3 9.2 12.3 Not included on target compound list until August 2015 NA 7/5/2001 <I.0 ND <1.0 <1.0 9.2 2.9 3 4.6 <5.0 6/25/2003 <1.0 ND <1.0 <1.0 6.8 <5.0 <1.0 <3.0 NA 1/20/2004 <1.0 ND <1.0 <1.0 7.9 1.6 J <1.0 <3.0 <5.0 7/14/2004 <1.0 <1.0 <1.0 <1.0 5.5 <5.0 <1.0 1.8J <5.0 2/2/2005 <1.0 <1.0 <1.0 <1.0 3.9 <1.0 <1.0 <1.0 12.0 12/20/2007 <1.0 <1.0 <1.0 <1.0 2 <1.0 <1.0 <1.0 <2.0 12/30/2008 <1.0 <1.0 <o.s <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 10/8/2009 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 4/7/2010 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 10/13/2010 <1.0 <1.0 <0.50 <1.0 <5.0 <5.0 <1.0 <1.0 <5.0 4/25/2011 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/2/2012 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 4/10/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 10/9/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 12.0 5/4/2015 <1.0 <1.0 4.7 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 6/16/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/11/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 1 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 11/16/2015 <0.5 <0.5 2.9 <0.5 <0.5 <0.5 0.75 <1.0 1 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 2/29/2016 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 10/17/2016 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 3/13/2017 <0.5 <0.5 1 <o.s <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 MW-6 7/6/2001 <1.0 ND <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 Not included on target compound list until August 2015 <5.1 6/25/2003 <1.0 ND <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 NA 1/20/2004 <1.0 ND <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 <5.0 7/14/2004 <1.0 <1.0 <1.0 <1.0 <5.0 <5.0 <1.0 1.8 J <5.0 2/2/2005 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 12/20/2007 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 12/30/2008 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 10/9/2009 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 a/vzolo <1.0 <1.0 <0.5 <1.0 <s.o <s.o <1.0 <z.o <l.o 10/13/2010 <1.0 <1.0 <0.50 <1.0 <5.0 <5.0 <1.0 <1.0 <5.0 4/25/2011 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1 <2.0 <2.0 8/2/2012 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 4/10/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 10/9/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 5/4/2015 <1.0 I <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 6/16/2015 <1.0<1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/11/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 1 <2.0 11/16/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 2/29/2016 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 1<0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 10/18/2016 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 1 <0.5 1 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 3 of 8 TABLE 4 Summary of Historical Groundwater Analytical Results Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-0615B, WBS 343348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Analytical Method VOCs by EPA Method 6200B (ug/L) Well ID Start Date Collected 1,2- Dichloroethane 1,2- Dichloropropane Benzene Ethylbenzene MTBE IPE Toluene Total xylenes sec-Bu[y[benzene Isopropylbenzene 1,2,4- Trimethylbenzene 1,3,5- Trimethylbenzene n-Propylbenzene Naphthalene 15A NCAC 2L Standards 0.4 0.6 1 600 20 70 600 500 70 70 400 400 70 6 MW-7 7/6/2001 <I.0 ND <1.0 <I.0 <LO <1.0 <LO <I.0 Not included on target compound list until August 2015 <5.2 6/25/2003 <LO ND <1.0 <1.0 <5.0 <5.0 <LO <3.0 NA 1/20/2004 <1.0 ND <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 <5.0 7/14/2004 <1.0 <1.0 <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 <5.0 2/2/2005 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 12/20/2007 * NA NA NA NA NA NA NA NA NA 12/30/2008** <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 10/9/2009 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 a/vzolo <1.0 <1.0 <0.5 <1.0 <s.o <s.o <1.0 <z.o <1.0 10/13/2010 <1.0 <1.0 <0.50 <1.0 <5.0 <5.0 <1.0 <1.0 <5.0 4/25/2011 <1.0 <1.0 <1.0 <1.0 I <1.0 <1.0 <1.0 <2.0 <2.0 8/2/2012 <1.0 I <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 4/10/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 10/9/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 5/4/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 6/16/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/11/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 11/16/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 2/29/2016 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 720 10/17/2016 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 3/14/2017 <0.5 <0.5 1 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 MW-8 7/5/2001 <1.0 ND <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 Not included on target compound list until August 2015 <5.1 6/25/2003 <1.0 ND <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 NA 1/20/2004 <1.0 ND <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 <5.0 7/14/2004 <1.0 <1.0 <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 <5.0 2/2/2005 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 12/20/2007 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 12/30/2008 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 10/9/2009 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 1 <2.0 <1.0 4/7/2010 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <z.o <1.0 10/13/2010 <1.0 <1.0 <0.50 <1.0 <5.0 <5.0 <1.0 <1.0 <5.0 4/25/2011 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/2/2012 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 4/10/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 10/9/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 5/4/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 6/16/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1 <2.0 <2.0 8/11/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 11/16/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 2/29/2016 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 10/17/2016 <0.5 <0.5 <0.5 <0.5 1<1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 4of8 TABLE 4 Summary of Historical Groundwater Analytical Results Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-0615B, WBS 343348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Analytical Method VOCs by EPA Method 6200B (ug/L) Well ID Start Date Collected 1,2- Dichloroethane 1,2- Dichloropropane Benzene Ethylbenzene MTBE IPE Toluene Total xylenes sec- Isopropylbenzene 1,2,4- Trimethylbenzene 1,3,5- Trimethylbenzene n_Propylbenzene Naphthalene 15A NCAC 2L Standards 0.4 0.6 1 600 20 70 600 500 70 70 400 400 70 6 MW-9 10/24/2001 <I.0 ND <1.0 <I.0 <LO <1.0 <LO <2.0 Not included on target compound list until August 2015 NA 6/25/2003 <I.0 ND <1.0 <1.0 <5.0 <5.0 <LO <3.0 NA 1/20/2004 <1.0 ND <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 <5.0 7/14/2004 <1.0 <1.0 <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 <5.0 2/2/2005 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 12/20/2007 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <3.0 12.0 12/30/2008 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 10/9/2009 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 a/vzolo <l.o <l.o <0.5 <1.0 <s.o <s.o <1.0 <z.o <1.0 10/13/2010 <1.0 <1.0 <0.50 <1.0 <5.0 <5.0 <1.0 <1.0 <5.0 4/25/2011 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 12.0 8/1/2012 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 4/10/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 10/9/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 5/5/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 6/16/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/11/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 11/17/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 3/1/2016 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 10/18/2016 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 MW-10 3/26/2009 <1.0 <1.0 <0.5 2.3 <5.0 <5.0 0.85 J 2.8 Not included on target compound list until August 2015 <1.0 10/9/2009 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 4/7/2010 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 10/13/2010 <1.0 <0.50 <1.0 <5.0 <5.0 <1.0 <1.0 <5.0 4/25/2011 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/2/2012 4.0 d.0 <1.0 d.0 <1.0 <1.0 d.0 <2.0 <2.0 4/10/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 10/8/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 5/4/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 6/16/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/11/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 1 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 11/16/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 1 <1.0 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 3/1/2016 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 Q.0 10/17/2016 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 3/14/2017 1 <0.5 1 <0.5 1 <0.5 <0.5 <0.5 <0.5 1 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 5 of 8 TABLE 4 Summary of Historical Groundwater Analytical Results Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-061513, WBS 343348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Analytical Method VOCs by EPA Method 6200B (ug/L) Well ID Start Date Collected 1,2- Dichloroethane 1,2- Dichloropropane Benzene Ethylbenzene MTBE IPE Toluene Total xylenes sec-Rulylbenzene Isopropylbenzene 1,2,4- Trimethylbenzene 1,3,5- Trimethylbenzene n-Propylbenzene Naphthalene 15A NCAC 2L Standards 0.4 0.6 1 600 20 70 600 500 70 70 400 400 70 6 MW 11 3/26/2009 <40 <40 2,800 3,800 <200 220 4,800 10,600 Not included on target compound list until August 2015 780 10/9/2009 <10 <10 65 940 <50 <50 38 1,240 220 4/7/2010 <1.0 <1.0 1.9 150 <5.0 <5.0 4.5 17 30 10/13/2010 <1.0 <1.0 4.4 130 <5.0 <5.0 8.8 106 33 4/25/2011 <1.0 <1.0 <1.0 40.6 <1.0 <1.0 <1.0 28.3 11.4 8/2/2012 <1.0 <1.0 2.3 6.4 <1.0 <1.0 <1.0 <2.0 5.6 4/10/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 12.0 10/8/2013 <1.0 <1.0 1.6 1.1 <1.0 <1.0 <1.0 <2.0 <2.0 5/4/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 Full Scale Injection 6/16/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/11/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <I.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 11/16/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <I.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 3/1/2016 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 10/17/2016 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 MW-12 3/26/2009 <1.0 <1.0 <0.5 <1.0 <5.0 19 <1.0 11.2 Not included on target compound list until August 2015 4.2 10/9/2009 <1.0 I <1.0 <0.5 <1.0 <5.0 1 9.2 <1.0 1 <2.0 <1.0 4/7/2010 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 10/13/2010 <1.0 <1.0 <0.50 <1.0 <5.0 <5.0 <1.0 <1.0 <5.0 4/25/2011-** <1.0 <1.0 559 8.5 228 1,790 354 8/1/2012 <1.0 Q.0 <1.0 d.0 Q.0 1.8 d.0 <2.0 <2.0 4/10/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 10/9/2013 <1.0 <1.0 <1.0 <1.0 <1.0 5.2 <1.0 <2.0 <2.0 5/5/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 6/16/2015 <1.0 I <1.0 <1.0 <1.0 <1.0 1.3 <1.0 <2.0 <2.0 8/11/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 11/17/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 2/29/2016 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 10/18/2016 <0.5 <0.5 <0.5 <0.5 <1.0 1.7 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 3/14/2017 <0.5 <0.5 <0.5 <0.5 <0.5 0.85 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 MW-13 3/26/2009 <10 <10 630 380 37 J 610 550 1,270 1 Not included on target compound list until August 2015 1 230 10/9/2009 <10 <10 360 300 <50 560 140 930 210 4/7/2010 <10 I <10 290 720 <50 350 300 1,980 390 10/13/2010 <1.0 <1.0 320 860 <50 320 330 3,300 490 4/25/2011 <1.0 <1.0 246 516 8.4 179 209 1,660 345 6/21/2012 Pilot Study EASO Injection 8/1/2012 <5.0 <5.0 249 600 <5.0 102 205 1,650 534 4/10/2013 <5.0 <5.0 57.3 210 <5.0 7.2 45.8 536.0 163 10/8/2013 <2.5 <2.5 54.6 178 <2.5 3.3 38.5 321 136 5/5/2015 <1.0 <1.0 88.4 434 <1.0 4.9 95.1 846 286 Full Scale Injection 6/16/2015 <1.0 <1.0 40.8 179 <1.0 1.8 23.4 1 369 91.2 8/11/2015 <0.5 <0.5 171 694 1 8.3 84.1 1112.5 <0.5 69.8 1150 102 189 325 11/17/2015 <1.0 <1.0 15.3 152 <1.0 <1.0 10.6 221.3 <1.0 30.8 186 17.7 74.3 68.2 3/1/2016 <1.2 <1.2 46.9 333 <1.2 1.6 22.9 425.7 <1.2 31.1 427 46.2 83 1 61.2 10/18/2016 <0.5 <0.5 17.9 137 <1.0 O.S6 3.2 66.4 3.7 22.5 136.0 S.2 56.6 29.9 3/14/2017 <0.5 <0.5 26.6 182 <0.5 1.3 4.6 59.0 4.7 29.4 187.0 8.8 76.1 1 17.9 6of8 TABLE 4 Summary of Historical Groundwater Analytical Results Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-0615B, WBS 343348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Analytical Method VOCs by EPA Method 6200B (ug/L) Well ID Start Date Collected 1,2- Dichloroethane 1,2- Dichloropropane Benzene Ethylbenzene MTBE IPE Toluene Total xylenes sec-Butylbenzene Isopropylbenzene 1,2,4- Trimethylbenzene 1,3,5- Trimethylbenzene n-Propylbenzene Naphthalene 15A NCAC 21, Standards 0.4 0.6 1 600 20 70 600 500 70 70 400 400 70 6 WATER SUPPLY WELLS WSW-9 2/26/2002 <I.0 ND <1.0 <LO <I.0 <LO <LO <LO Not included on target compound list until August 2015 NA 6/25/2002 <I.0 ND <1.0 <1.0 <I.0 <1.0 <LO <LO NA 10/15/2002 <1.0 ND <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 NA 2/12/2003 <1.0 ND <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 NA 6/25/2003 <1.0 ND <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 NA 7/14/2004 <1.0 <1.0 <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 <5.0 12/20/2007 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 <1.0 <3.0 <2.0 12/30/2008 4.0 <1.0 <0.5 <1.0 <5.0 <5.0 d.0 1 <2.0 <1.0 10/9/2009 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 10/13/2010 <1.0 <1.0 <0.50 <1.0 <5.0 <5.0 <1.0 <1.0 <5.0 2/8/2012 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 4/10/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 5/5/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 /16/2015*** NS NS NS NS NS NS NS NS NS WSW-10 2/26/2002 <I.0 ND <1.0 <I.0 <1.0 <1.0 <1.0 <LO Not Sampled NA 6/25/2002 29 ND <1.0 <I.0 1.9 <1.0 <1.0 <1.0 NA 10/15/2002 <1.0 ND <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 NA 2/12/2003 <1.0 ND <1.0 d.0 <5.0 <5.0 d.0 <2.0 NA 5/5/2015**** NA NA NA NA NA NA NA NA NA 6/16/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/11/2015 <0.5 1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 11/16/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 3/1/2016 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 10/18/2016 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 3/14/2017 <0.5 <0.5 1 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 1 <0.5 <2.0 WSW-11 2/26/2002 <1.0 ND <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 Not included on target compound list until August 2015 NA 6/25/2002 <1.0 ND <1.0 <1.0 1.3 1.9 <1.0 <1.0 NA 10/15/2002 <1.0 ND <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 NA 6/25/2003 <1.0 ND <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 NA 7/14/2004 <1.0 <1.0 <1.0 <1.0 <5.0 <5.0 <1.0 <3.0 <5.0 12/20/2007 <1.0 <1.0 <1.0 <1.0 <5.0 1 <5.0 <1.0 <3.0 <5.0 12/30/2008 <1.0 I <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 10/8/2009 <1.0 <1.0 <0.5 <1.0 <5.0 <5.0 <1.0 <2.0 <1.0 2/8/2012 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 4/10/2013 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 5/5/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 6/16/2015 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 8/11/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <I.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 11/16/2015 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 3/1/2016 <0.5 <0.5 <0.5 <0.5 <0.5 1 0.94 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 10/18/2016 <0.5 1 <0.5 <0.5 <0.5 <1.0 1 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 3/14/2017 <0.5 1 <0.5 <0.5 <0.5 <0.5 1 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 7of8 TABLE 4 Summary of Historical Groundwater Analytical Results Former Preslar's Exxon 901 NC Hwy 24/27 Midland, Cabarrus County, North Carolina NCDOT Project R-061513, WBS 343348.3.5 Incident #13543 SIES-DAA Project No. 2014.0009.NDOT Analytical Method VOCs by EPA Method 6200B (ug/L) Well ID Start Date Collected 1,2- Dichloroethane 112- Dichloropropane Benzene Rthylbenzene M"LBF, WE Toluene Total Xylenes sec-Butylbenzene lsopropylbenzene 1,2,4 Trimethylbenzene 1'3'S Trimethylbenzene n-Propylbenzene Naphthalene 15A NCAC 2L Standards 0.4 0.6 t 600 20 70 600 500 70 70 400 400 70 6 WSW-12 2/26/2002 <I.0 ND <1.0 <I.0 <I.0 <LO <LO <I.0 Not Sampled NA 6/25/2002 <I.0 ND <1.0 <I.0 <I.0 <1.0 <LO <I.0 NA 10/15/2002 <I.0 ND <1.0 <I.0 <I.0 <1.0 <LO <I.0 NA 2/12/2003 <I.0 ND <1.0 <I.0 <5.0 <5.0 <LO <3.0 NA 7/14/2004 <I.0 <I.0 <1.0 <I.0 <5.0 <5.0 <I.0 2.0 J <5.0 12/20/2007 <I.0 <I.0 <1.0 <I.0 <I.0 <1.0 <I.0 <I.0 <2.0 12/30/2008 <I.0 <I.0 <0.5 <I.0 <5.0 <5.0 <I.0 <2.0 <1.0 10/8/2009 <1.0 <I.0 <0.5 <I.0 <5.0 <5.0 <I.0 <2.0 <1.0 10/13/2010 <I.0 <I.0 <0.50 <I.0 <5.0 <5.0 <1.0 <I.0 <5.0 2/8/2012 <10 <I.0 <1.0 <I.0 <I.0 <5.0 <I.0 <2.0 NA 4/10/2013 <L0 <1.0 <1.0 <I.0 <I.0 <1.0 <I.0 <2.0 1 NA 5/5/2015-***l NS NS NS NS NS NS NS NS NS 6/16/2015***l NS NS NS NS NS NS NS NS NS Notes: ug/L = micrograms per liter Compounds not listed were below the quantitation limit. Data before 10/15/02 are from Corrective Action Plan dated January 15, 2002 prepared by S&ME, Inc. ND - Not Detected Bolded values indicate detected constituents; shaded values exceed the NCAC 2L Groundwater Standards. NA - Not Analyzed J - Estimated concentration between the method detection limit and the reporting limit. * MW-7 could not be located during the 12/20/07 sampling event. ** Chloromethane was detected in this sample at a concentration of 1.7 ug/L, but this value is estimated below the laboratory reporting limit. Water supply wells WSW-9 and WSW-12 were removed from the monitoring plan on August 21, 2015. *** Analytical results were challenged by Solutions-IES and historical trends will be confirmed during the next sampling event. NS - Not Sampled **** WSW-10 and WSW-12 could not be accessed during the 5/5/2015 sampling event; WSW-9 and WSW-12 were not accessible 6/16/2015 8of8 APPENDIX A LABORATORY ANALYTICAL REPORT (CD ONLY) aceAnalytical —pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 March 28, 2017 Candy Elliott Soutions-IES 1101 Nowell Rd Raleigh, NC 27607 RE: Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Dear Candy Elliott: Enclosed are the analytical results for sample(s) received by the laboratory on March 16, 2017. The results relate only to the samples included in this report. Results reported herein conform to the most current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual, where applicable, unless otherwise noted in the body of the report. If you have any questions concerning this report, please feel free to contact me. Sincerely, p Taylor Ezell taylor.ezell@pacelabs.com (704)875-9092 Project Manager Enclosures cc: Mike Branson, Solutions-IES Chemical Testing Engineer, NCDOT REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 1 of 54 aceAnalytical —pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Charlotte Certification IDs 9800 Kincey Ave. Ste 100, Huntersville, NC 28078 North Carolina Drinking Water Certification #: 37706 North Carolina Field Services Certification #: 5342 North Carolina Wastewater Certification #: 12 Asheville Certification IDs 2225 Riverside Drive, Asheville, NC 28804 Florida/NELAP Certification #: E87648 Massachusetts Certification #: M-NC030 North Carolina Drinking Water Certification #: 37712 CERTIFICATIONS South Carolina Certification #: 99006001 Florida/NELAP Certification #: E87627 Kentucky UST Certification #: 84 Virginia/VELAP Certification #: 460221 North Carolina Wastewater Certification #: 40 South Carolina Certification #: 99030001 Virginia/VELAP Certification #: 460222 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 2 of 54 aceAnalytical —pacelabsxom Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 SAMPLE SUMMARY Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Lab ID Sample ID Matrix Date Collected Date Received 92333647001 MW-1 Water 03/14/17 10:55 03/16/17 08:30 92333647002 MW-2 Water 03/13/17 14:20 03/16/17 08:30 92333647003 MW-3 Water 03/14/17 14:05 03/16/17 08:30 92333647004 MW-4 Water 03/13/17 15:15 03/16/17 08:30 92333647005 MW-5 Water 03/13/17 15:20 03/16/17 08:30 92333647006 MW-6 Water 03/14/17 12:25 03/16/17 08:30 92333647007 MW-7 Water 03/14/17 14:08 03/16/17 08:30 92333647008 MW-8 Water 03/14/17 14:47 03/16/17 08:30 92333647009 MW-9 Water 03/14/17 09:47 03/16/17 08:30 92333647010 MW-10 Water 03/14/17 10:10 03/16/17 08:30 92333647011 MW-11 Water 03/14/17 12:20 03/16/17 08:30 92333647012 MW-12 Water 03/14/17 10:55 03/16/17 08:30 92333647013 MW-13 Water 03/14/17 13:10 03/16/17 08:30 92333647014 WSW-10 Water 03/14/17 15:10 03/16/17 08:30 92333647015 WSW-11 Water 03/14/17 15:10 03/16/17 08:30 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 3 of 54 aceAnalytical —pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 SAMPLE ANALYTE COUNT Project: Pace Project No.: PRESLARS EXXON NC WBS#34348.3 92333647 Analytes Lab ID Sample ID Method Analysts Reported Laboratory 92333647001 MW-1 SM 6200B CAH 63 PASI-C EPA 300.0 AES2 1 PASI-A 92333647002 MW-2 SM 6200B CAH 63 PASI-C EPA 300.0 AES2 1 PASI-A 92333647003 MW-3 SM 6200B CAH 63 PASI-C EPA 300.0 AES2 1 PASI-A 92333647004 MW-4 SM 6200B CAH 63 PASI-C EPA 300.0 AES2 1 PASI-A 92333647005 MW-5 SM 6200B CAH 63 PASI-C EPA 300.0 AES2 1 PASI-A 92333647006 MW-6 SM 6200B CAH 63 PASI-C EPA 300.0 AES2 1 PASI-A 92333647007 MW-7 SM 6200B CAH 63 PASI-C EPA 300.0 AES2 1 PASI-A 92333647008 MW-8 SM 6200B CAH 63 PASI-C EPA 300.0 AES2 1 PASI-A 92333647009 MW-9 SM 6200B CAH 63 PASI-C EPA 300.0 AES2 1 PASI-A 92333647010 MW-10 SM 6200B CAH 63 PASI-C EPA 300.0 AES2 1 PASI-A 92333647011 MW-11 SM 6200B CAH 63 PASI-C EPA 300.0 AES2 1 PASI-A 92333647012 MW-12 SM 6200B CAH 63 PASI-C EPA 300.0 AES2 1 PASI-A 92333647013 MW-13 SM 6200B CAH 63 PASI-C EPA 300.0 AES2 1 PASI-A 92333647014 WSW-10 SM 6200B CAH 63 PASI-C 92333647015 WSW-11 SM 6200B CAH 63 PASI-C REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 4 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-1 Lab ID: 92333647001 Collected: 03/14/17 10:55 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene ND ug/L 0.50 0.25 1 03/16/17 18:59 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/16/17 18:59 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/16/17 18:59 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/16/17 18:59 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/16/17 18:59 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/16/17 18:59 74-83-9 n-Butylbenzene ND ug/L 0.50 0.25 1 03/16/17 18:59 104-51-8 sec-Butylbenzene ND ug/L 0.50 0.25 1 03/16/17 18:59 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/16/17 18:59 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/16/17 18:59 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/16/17 18:59 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/16/17 18:59 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/16/17 18:59 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/16/17 18:59 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/16/17 18:59 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/16/17 18:59 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/16/17 18:59 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/16/17 18:59 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/16/17 18:59 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/16/17 18:59 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/16/17 18:59 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/16/17 18:59 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/16/17 18:59 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/16/17 18:59 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/16/17 18:59 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/16/17 18:59 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/16/17 18:59 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/16/17 18:59 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/16/17 18:59 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/16/17 18:59 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/16/17 18:59 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/16/17 18:59 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/16/17 18:59 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/16/17 18:59 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/16/17 18:59 10061-02-6 Diisopropyl ether ND ug/L 0.50 0.25 1 03/16/17 18:59 108-20-3 Ethylbenzene ND ug/L 0.50 0.25 1 03/16/17 18:59 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/16/17 18:59 87-68-3 Isopropylbenzene (Cumene) ND ug/L 0.50 0.25 1 03/16/17 18:59 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/16/17 18:59 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/16/17 18:59 1634-04-4 Naphthalene ND ug/L 2.0 1.0 1 03/16/17 18:59 91-20-3 n-Propylbenzene ND ug/L 0.50 0.25 1 03/16/17 18:59 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/16/17 18:59 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/16/17 18:59 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/16/17 18:59 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 5 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-1 Lab ID: 92333647001 Collected: 03/14/17 10:55 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/16/17 18:59 127-18-4 Toluene ND ug/L 0.50 0.25 1 03/16/17 18:59 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/16/17 18:59 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/16/17 18:59 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/16/17 18:59 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/16/17 18:59 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/16/17 18:59 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/16/17 18:59 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/16/17 18:59 96-18-4 1,2,4-Trimethylbenzene ND ug/L 0.50 0.25 1 03/16/17 18:59 95-63-6 1,3,5-Trimethylbenzene ND ug/L 0.50 0.25 1 03/16/17 18:59 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/16/17 18:59 75-01-4 m&p-Xylene ND ug/L 1.0 0.50 1 03/16/17 18:59 179601-23-1 o-Xylene ND ug/L 0.50 0.25 1 03/16/17 18:59 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 103 % 70-130 1 03/16/17 18:59 17060-07-0 4-Bromofluorobenzene (S) 94 % 70-130 1 03/16/17 18:59 460-00-4 Toluene-d8 (S) 98 % 70-130 1 03/16/17 18:59 2037-26-5 300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Sulfate 55.8 mg/L 20.0 10.0 10 03/17/1715:59 14808-79-8 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 6 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-2 Lab ID: 92333647002 Collected: 03/13/17 14:20 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene ND ug/L 0.50 0.25 1 03/16/17 19:16 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/16/17 19:16 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/16/17 19:16 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/16/17 19:16 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/16/17 19:16 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/16/17 19:16 74-83-9 M1 n-Butylbenzene ND ug/L 0.50 0.25 1 03/16/17 19:16 104-51-8 sec-Butylbenzene ND ug/L 0.50 0.25 1 03/16/17 19:16 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/16/17 19:16 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/16/17 19:16 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/16/17 19:16 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/16/17 19:16 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/16/17 19:16 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/16/17 19:16 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/16/17 19:16 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/16/17 19:16 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/16/17 19:16 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/16/17 19:16 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/16/17 19:16 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/16/17 19:16 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/16/17 19:16 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/16/17 19:16 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/16/17 19:16 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/16/17 19:16 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/16/17 19:16 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/16/17 19:16 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/16/17 19:16 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/16/17 19:16 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/16/17 19:16 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/16/17 19:16 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/16/17 19:16 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/16/17 19:16 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/16/17 19:16 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/16/17 19:16 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/16/17 19:16 10061-02-6 Diisopropyl ether ND ug/L 0.50 0.25 1 03/16/17 19:16 108-20-3 Ethylbenzene ND ug/L 0.50 0.25 1 03/16/17 19:16 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/16/17 19:16 87-68-3 Isopropylbenzene (Cumene) ND ug/L 0.50 0.25 1 03/16/17 19:16 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/16/17 19:16 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/16/17 19:16 1634-04-4 Naphthalene ND ug/L 2.0 1.0 1 03/16/17 19:16 91-20-3 n-Propylbenzene ND ug/L 0.50 0.25 1 03/16/17 19:16 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/16/17 19:16 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/16/17 19:16 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/16/17 19:16 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 7 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-2 Lab ID: 92333647002 Collected: 03/13/17 14:20 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/16/17 19:16 127-18-4 Toluene ND ug/L 0.50 0.25 1 03/16/17 19:16 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/16/17 19:16 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/16/17 19:16 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/16/17 19:16 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/16/17 19:16 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/16/17 19:16 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/16/17 19:16 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/16/17 19:16 96-18-4 1,2,4-Trimethylbenzene ND ug/L 0.50 0.25 1 03/16/17 19:16 95-63-6 1,3,5-Trimethylbenzene ND ug/L 0.50 0.25 1 03/16/17 19:16 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/16/17 19:16 75-01-4 m&p-Xylene ND ug/L 1.0 0.50 1 03/16/17 19:16 179601-23-1 o-Xylene ND ug/L 0.50 0.25 1 03/16/17 19:16 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 102 % 70-130 1 03/16/17 19:16 17060-07-0 4-Bromofluorobenzene (S) 96 % 70-130 1 03/16/17 19:16 460-00-4 Toluene-d8 (S) 97 % 70-130 1 03/16/17 19:16 2037-26-5 300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Sulfate 22.8 mg/L 2.0 1.0 1 03/17/1715:59 14808-79-8 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 8 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-3 Lab ID: 92333647003 Collected: 03/14/17 14:05 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene ND ug/L 0.50 0.25 1 03/17/17 02:35 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/17/17 02:35 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/17/17 02:35 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/17/17 02:35 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/17/17 02:35 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/17/17 02:35 74-83-9 n-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 02:35 104-51-8 sec-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 02:35 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/17/17 02:35 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/17/17 02:35 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/17/17 02:35 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/17/17 02:35 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/17/17 02:35 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/17/17 02:35 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 02:35 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 02:35 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/17/17 02:35 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/17/17 02:35 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/17/17 02:35 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/17/17 02:35 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 02:35 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 02:35 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 02:35 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/17/17 02:35 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 02:35 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 02:35 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 02:35 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 02:35 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 02:35 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 02:35 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 02:35 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 02:35 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 02:35 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 02:35 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 02:35 10061-02-6 Diisopropyl ether ND ug/L 0.50 0.25 1 03/17/17 02:35 108-20-3 Ethylbenzene ND ug/L 0.50 0.25 1 03/17/17 02:35 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/17/17 02:35 87-68-3 Isopropylbenzene (Cumene) ND ug/L 0.50 0.25 1 03/17/17 02:35 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/17/17 02:35 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/17/17 02:35 1634-04-4 Naphthalene ND ug/L 2.0 1.0 1 03/17/17 02:35 91-20-3 n-Propylbenzene ND ug/L 0.50 0.25 1 03/17/17 02:35 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/17/17 02:35 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 02:35 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 02:35 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 9 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-3 Lab ID: 92333647003 Collected: 03/14/17 14:05 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/17/17 02:35 127-18-4 Toluene ND ug/L 0.50 0.25 1 03/17/17 02:35 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 02:35 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 02:35 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 02:35 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 02:35 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/17/17 02:35 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/17/17 02:35 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/17/17 02:35 96-18-4 1,2,4-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 02:35 95-63-6 1,3,5-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 02:35 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/17/17 02:35 75-01-4 m&p-Xylene ND ug/L 1.0 0.50 1 03/17/17 02:35 179601-23-1 o-Xylene ND ug/L 0.50 0.25 1 03/17/17 02:35 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 100 % 70-130 1 03/17/17 02:35 17060-07-0 4-Bromofluorobenzene (S) 94 % 70-130 1 03/17/17 02:35 460-00-4 Toluene-d8 (S) 100 % 70-130 1 03/17/17 02:35 2037-26-5 300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Sulfate 122 mg/L 6.0 3.0 3 03/17/1715:59 14808-79-8 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 10 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-4 Lab ID: 92333647004 Collected: 03/13/17 15:15 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene 155 ug/L 1.2 0.62 2.5 03/17/17 06:49 71-43-2 Bromobenzene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 108-86-1 Bromochloromethane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 74-97-5 Bromodichloromethane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 75-27-4 Bromoform ND ug/L 1.2 0.62 2.5 03/17/17 06:49 75-25-2 Bromomethane ND ug/L 12.5 1.2 2.5 03/17/17 06:49 74-83-9 n-Butylbenzene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 104-51-8 sec-Butylbenzene 2.2 ug/L 1.2 0.62 2.5 03/17/17 06:49 135-98-8 tert-Butyl benzene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 98-06-6 Carbon tetrachloride ND ug/L 1.2 0.62 2.5 03/17/17 06:49 56-23-5 Chlorobenzene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 108-90-7 Chloroethane ND ug/L 2.5 1.2 2.5 03/17/17 06:49 75-00-3 Chloroform ND ug/L 1.2 0.62 2.5 03/17/17 06:49 67-66-3 Chloromethane ND ug/L 2.5 1.2 2.5 03/17/17 06:49 74-87-3 2-Chlorotoluene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 95-49-8 4-Chlorotoluene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 2.5 1.2 2.5 03/17/17 06:49 96-12-8 Dibromochloromethane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 1.2 0.62 2.5 03/17/17 06:49 106-93-4 Dibromomethane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 74-95-3 1,2-Dichlorobenzene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 95-50-1 1,3-Dichlorobenzene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 541-73-1 1,4-Dichlorobenzene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 106-46-7 Dichlorodifluoromethane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 75-71-8 1,1-Dichloroethane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 75-34-3 1,2-Dichloroethane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 107-06-2 1,1-Dichloroethene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 75-35-4 cis-1,2-Dichloroethene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 156-59-2 trans-1,2-Dichloroethene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 156-60-5 1,2-Dichloropropane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 78-87-5 1,3-Dichloropropane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 142-28-9 2,2-Dichloropropane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 594-20-7 1,1-Dichloropropene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 563-58-6 cis-1,3-Dichloropropene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 10061-02-6 Diisopropyl ether 7.4 ug/L 1.2 0.62 2.5 03/17/17 06:49 108-20-3 Ethylbenzene 319 ug/L 1.2 0.62 2.5 03/17/17 06:49 100-41-4 Hexachloro-1,3-butadiene ND ug/L 5.0 2.5 2.5 03/17/17 06:49 87-68-3 Isopropylbenzene (Cumene) 14.3 ug/L 1.2 0.62 2.5 03/17/17 06:49 98-82-8 Methylene Chloride 5.8 ug/L 5.0 2.5 2.5 03/17/17 06:49 75-09-2 C9 Methyl-tert-butyl ether ND ug/L 1.2 0.62 2.5 03/17/17 06:49 1634-04-4 Naphthalene 27.2 ug/L 5.0 2.5 2.5 03/17/17 06:49 91-20-3 n-Propylbenzene 38.8 ug/L 1.2 0.62 2.5 03/17/17 06:49 103-65-1 Styrene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 11 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-4 Lab ID: 92333647004 Collected: 03/13/17 15:15 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 127-18-4 Toluene 29.8 ug/L 1.2 0.62 2.5 03/17/17 06:49 108-88-3 1,2,3-Trichlorobenzene ND ug/L 5.0 2.5 2.5 03/17/17 06:49 87-61-6 1,2,4-Trichlorobenzene ND ug/L 5.0 2.5 2.5 03/17/17 06:49 120-82-1 1,1,1-Trichloroethane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 71-55-6 1,1,2-Trichloroethane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 79-00-5 Trichloroethene ND ug/L 1.2 0.62 2.5 03/17/17 06:49 79-01-6 Trichlorofluoromethane ND ug/L 2.5 1.2 2.5 03/17/17 06:49 75-69-4 1,2,3-Trichloropropane ND ug/L 1.2 0.62 2.5 03/17/17 06:49 96-18-4 1,2,4-Trimethylbenzene 174 ug/L 1.2 0.62 2.5 03/17/17 06:49 95-63-6 1,3,5-Trimethylbenzene 15.0 ug/L 1.2 0.62 2.5 03/17/17 06:49 108-67-8 Vinyl chloride ND ug/L 2.5 0.62 2.5 03/17/17 06:49 75-01-4 m&p-Xylene 129 ug/L 2.5 1.2 2.5 03/17/17 06:49 179601-23-1 o-Xylene 25.6 ug/L 1.2 0.62 2.5 03/17/17 06:49 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 103 % 70-130 2.5 03/17/17 06:49 17060-07-0 4-Bromofluorobenzene (S) 96 % 70-130 2.5 03/17/17 06:49 460-00-4 Toluene-d8 (S) 99 % 70-130 2.5 03/17/17 06:49 2037-26-5 300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Sulfate ND mg/L 2.0 1.0 1 03/17/1715:59 14808-79-8 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 12 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-5 Lab ID: 92333647005 Collected: 03/13/17 15:20 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene ND ug/L 0.50 0.25 1 03/17/17 02:52 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/17/17 02:52 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/17/17 02:52 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/17/17 02:52 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/17/17 02:52 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/17/17 02:52 74-83-9 n-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 02:52 104-51-8 sec-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 02:52 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/17/17 02:52 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/17/17 02:52 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/17/17 02:52 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/17/17 02:52 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/17/17 02:52 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/17/17 02:52 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 02:52 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 02:52 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/17/17 02:52 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/17/17 02:52 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/17/17 02:52 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/17/17 02:52 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 02:52 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 02:52 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 02:52 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/17/17 02:52 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 02:52 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 02:52 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 02:52 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 02:52 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 02:52 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 02:52 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 02:52 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 02:52 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 02:52 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 02:52 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 02:52 10061-02-6 Diisopropyl ether ND ug/L 0.50 0.25 1 03/17/17 02:52 108-20-3 Ethylbenzene ND ug/L 0.50 0.25 1 03/17/17 02:52 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/17/17 02:52 87-68-3 Isopropylbenzene (Cumene) ND ug/L 0.50 0.25 1 03/17/17 02:52 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/17/17 02:52 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/17/17 02:52 1634-04-4 Naphthalene ND ug/L 2.0 1.0 1 03/17/17 02:52 91-20-3 n-Propylbenzene ND ug/L 0.50 0.25 1 03/17/17 02:52 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/17/17 02:52 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 02:52 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 02:52 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 13 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-5 Lab ID: 92333647005 Collected: 03/13/17 15:20 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/17/17 02:52 127-18-4 Toluene ND ug/L 0.50 0.25 1 03/17/17 02:52 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 02:52 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 02:52 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 02:52 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 02:52 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/17/17 02:52 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/17/17 02:52 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/17/17 02:52 96-18-4 1,2,4-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 02:52 95-63-6 1,3,5-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 02:52 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/17/17 02:52 75-01-4 m&p-Xylene ND ug/L 1.0 0.50 1 03/17/17 02:52 179601-23-1 o-Xylene ND ug/L 0.50 0.25 1 03/17/17 02:52 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 102 % 70-130 1 03/17/17 02:52 17060-07-0 4-Bromofluorobenzene (S) 97 % 70-130 1 03/17/17 02:52 460-00-4 Toluene-d8 (S) 99 % 70-130 1 03/17/17 02:52 2037-26-5 300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Sulfate 32.2 mg/L 2.0 1.0 1 03/17/1715:59 14808-79-8 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 14 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-6 Lab ID: 92333647006 Collected: 03/14/17 12:25 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene ND ug/L 0.50 0.25 1 03/17/17 03:09 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/17/17 03:09 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/17/17 03:09 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/17/17 03:09 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/17/17 03:09 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/17/17 03:09 74-83-9 n-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:09 104-51-8 sec-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:09 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/17/17 03:09 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/17/17 03:09 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/17/17 03:09 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/17/17 03:09 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/17/17 03:09 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/17/17 03:09 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 03:09 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 03:09 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/17/17 03:09 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/17/17 03:09 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/17/17 03:09 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/17/17 03:09 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 03:09 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 03:09 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 03:09 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/17/17 03:09 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 03:09 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 03:09 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 03:09 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 03:09 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 03:09 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 03:09 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 03:09 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 03:09 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 03:09 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 03:09 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 03:09 10061-02-6 Diisopropyl ether ND ug/L 0.50 0.25 1 03/17/17 03:09 108-20-3 Ethylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:09 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/17/17 03:09 87-68-3 Isopropylbenzene (Cumene) ND ug/L 0.50 0.25 1 03/17/17 03:09 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/17/17 03:09 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/17/17 03:09 1634-04-4 Naphthalene ND ug/L 2.0 1.0 1 03/17/17 03:09 91-20-3 n-Propylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:09 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/17/17 03:09 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 03:09 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 03:09 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 15 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-6 Lab ID: 92333647006 Collected: 03/14/17 12:25 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/17/17 03:09 127-18-4 Toluene ND ug/L 0.50 0.25 1 03/17/17 03:09 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 03:09 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 03:09 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 03:09 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 03:09 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/17/17 03:09 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/17/17 03:09 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/17/17 03:09 96-18-4 1,2,4-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:09 95-63-6 1,3,5-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:09 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/17/17 03:09 75-01-4 m&p-Xylene ND ug/L 1.0 0.50 1 03/17/17 03:09 179601-23-1 o-Xylene ND ug/L 0.50 0.25 1 03/17/17 03:09 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 101 % 70-130 1 03/17/17 03:09 17060-07-0 4-Bromofluorobenzene (S) 96 % 70-130 1 03/17/17 03:09 460-00-4 Toluene-d8 (S) 99 % 70-130 1 03/17/17 03:09 2037-26-5 300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Sulfate 27.9 mg/L 2.0 1.0 1 03/17/1715:59 14808-79-8 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 16 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-7 Lab ID: 92333647007 Collected: 03/14/17 14:08 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene ND ug/L 0.50 0.25 1 03/17/17 03:26 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/17/17 03:26 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/17/17 03:26 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/17/17 03:26 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/17/17 03:26 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/17/17 03:26 74-83-9 n-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:26 104-51-8 sec-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:26 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/17/17 03:26 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/17/17 03:26 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/17/17 03:26 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/17/17 03:26 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/17/17 03:26 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/17/17 03:26 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 03:26 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 03:26 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/17/17 03:26 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/17/17 03:26 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/17/17 03:26 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/17/17 03:26 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 03:26 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 03:26 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 03:26 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/17/17 03:26 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 03:26 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 03:26 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 03:26 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 03:26 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 03:26 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 03:26 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 03:26 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 03:26 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 03:26 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 03:26 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 03:26 10061-02-6 Diisopropyl ether ND ug/L 0.50 0.25 1 03/17/17 03:26 108-20-3 Ethylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:26 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/17/17 03:26 87-68-3 Isopropylbenzene (Cumene) ND ug/L 0.50 0.25 1 03/17/17 03:26 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/17/17 03:26 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/17/17 03:26 1634-04-4 Naphthalene ND ug/L 2.0 1.0 1 03/17/17 03:26 91-20-3 n-Propylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:26 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/17/17 03:26 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 03:26 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 03:26 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 17 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-7 Lab ID: 92333647007 Collected: 03/14/17 14:08 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/17/17 03:26 127-18-4 Toluene ND ug/L 0.50 0.25 1 03/17/17 03:26 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 03:26 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 03:26 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 03:26 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 03:26 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/17/17 03:26 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/17/17 03:26 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/17/17 03:26 96-18-4 1,2,4-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:26 95-63-6 1,3,5-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:26 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/17/17 03:26 75-01-4 m&p-Xylene ND ug/L 1.0 0.50 1 03/17/17 03:26 179601-23-1 o-Xylene ND ug/L 0.50 0.25 1 03/17/17 03:26 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 99 % 70-130 1 03/17/17 03:26 17060-07-0 4-Bromofluorobenzene (S) 97 % 70-130 1 03/17/17 03:26 460-00-4 Toluene-d8 (S) 100 % 70-130 1 03/17/17 03:26 2037-26-5 300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Sulfate 25.7 mg/L 2.0 1.0 1 03/17/1715:59 14808-79-8 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 18 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-8 Lab ID: 92333647008 Collected: 03/14/17 14:47 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene ND ug/L 0.50 0.25 1 03/17/17 03:43 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/17/17 03:43 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/17/17 03:43 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/17/17 03:43 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/17/17 03:43 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/17/17 03:43 74-83-9 n-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:43 104-51-8 sec-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:43 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/17/17 03:43 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/17/17 03:43 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/17/17 03:43 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/17/17 03:43 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/17/17 03:43 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/17/17 03:43 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 03:43 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 03:43 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/17/17 03:43 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/17/17 03:43 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/17/17 03:43 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/17/17 03:43 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 03:43 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 03:43 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 03:43 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/17/17 03:43 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 03:43 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 03:43 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 03:43 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 03:43 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 03:43 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 03:43 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 03:43 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 03:43 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 03:43 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 03:43 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 03:43 10061-02-6 Diisopropyl ether ND ug/L 0.50 0.25 1 03/17/17 03:43 108-20-3 Ethylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:43 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/17/17 03:43 87-68-3 Isopropylbenzene (Cumene) ND ug/L 0.50 0.25 1 03/17/17 03:43 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/17/17 03:43 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/17/17 03:43 1634-04-4 Naphthalene ND ug/L 2.0 1.0 1 03/17/17 03:43 91-20-3 n-Propylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:43 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/17/17 03:43 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 03:43 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 03:43 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 19 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-8 Lab ID: 92333647008 Collected: 03/14/17 14:47 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/17/17 03:43 127-18-4 Toluene ND ug/L 0.50 0.25 1 03/17/17 03:43 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 03:43 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 03:43 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 03:43 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 03:43 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/17/17 03:43 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/17/17 03:43 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/17/17 03:43 96-18-4 1,2,4-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:43 95-63-6 1,3,5-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 03:43 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/17/17 03:43 75-01-4 m&p-Xylene ND ug/L 1.0 0.50 1 03/17/17 03:43 179601-23-1 o-Xylene ND ug/L 0.50 0.25 1 03/17/17 03:43 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 101 % 70-130 1 03/17/17 03:43 17060-07-0 4-Bromofluorobenzene (S) 95 % 70-130 1 03/17/17 03:43 460-00-4 Toluene-d8 (S) 98 % 70-130 1 03/17/17 03:43 2037-26-5 300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Sulfate 102 mg/L 4.0 2.0 2 03/22/1713:21 14808-79-8 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 20 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-9 Lab ID: 92333647009 Collected: 03/14/17 09:47 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene ND ug/L 0.50 0.25 1 03/17/17 04:00 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/17/17 04:00 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/17/17 04:00 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/17/17 04:00 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/17/17 04:00 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/17/17 04:00 74-83-9 n-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:00 104-51-8 sec-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:00 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/17/17 04:00 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/17/17 04:00 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:00 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/17/17 04:00 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/17/17 04:00 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/17/17 04:00 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 04:00 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 04:00 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/17/17 04:00 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/17/17 04:00 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/17/17 04:00 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/17/17 04:00 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:00 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:00 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:00 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/17/17 04:00 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:00 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:00 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:00 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:00 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:00 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:00 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:00 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:00 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 04:00 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 04:00 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 04:00 10061-02-6 Diisopropyl ether ND ug/L 0.50 0.25 1 03/17/17 04:00 108-20-3 Ethylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:00 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/17/17 04:00 87-68-3 Isopropylbenzene (Cumene) ND ug/L 0.50 0.25 1 03/17/17 04:00 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/17/17 04:00 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/17/17 04:00 1634-04-4 Naphthalene ND ug/L 2.0 1.0 1 03/17/17 04:00 91-20-3 n-Propylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:00 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/17/17 04:00 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 04:00 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 04:00 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 21 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-9 Lab ID: 92333647009 Collected: 03/14/17 09:47 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/17/17 04:00 127-18-4 Toluene ND ug/L 0.50 0.25 1 03/17/17 04:00 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 04:00 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 04:00 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:00 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:00 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:00 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/17/17 04:00 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:00 96-18-4 1,2,4-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:00 95-63-6 1,3,5-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:00 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/17/17 04:00 75-01-4 m&p-Xylene ND ug/L 1.0 0.50 1 03/17/17 04:00 179601-23-1 o-Xylene ND ug/L 0.50 0.25 1 03/17/17 04:00 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 103 % 70-130 1 03/17/17 04:00 17060-07-0 4-Bromofluorobenzene (S) 97 % 70-130 1 03/17/17 04:00 460-00-4 Toluene-d8 (S) 101 % 70-130 1 03/17/17 04:00 2037-26-5 300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Sulfate 9.5 mg/L 2.0 1.0 1 03/22/1713:21 14808-79-8 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 22 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-10 Lab ID: 92333647010 Collected: 03/14/17 10:10 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene ND ug/L 0.50 0.25 1 03/17/17 04:17 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/17/17 04:17 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/17/17 04:17 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/17/17 04:17 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/17/17 04:17 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/17/17 04:17 74-83-9 n-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:17 104-51-8 sec-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:17 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/17/17 04:17 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/17/17 04:17 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:17 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/17/17 04:17 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/17/17 04:17 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/17/17 04:17 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 04:17 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 04:17 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/17/17 04:17 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/17/17 04:17 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/17/17 04:17 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/17/17 04:17 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:17 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:17 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:17 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/17/17 04:17 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:17 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:17 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:17 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:17 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:17 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:17 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:17 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:17 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 04:17 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 04:17 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 04:17 10061-02-6 Diisopropyl ether ND ug/L 0.50 0.25 1 03/17/17 04:17 108-20-3 Ethylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:17 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/17/17 04:17 87-68-3 Isopropylbenzene (Cumene) ND ug/L 0.50 0.25 1 03/17/17 04:17 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/17/17 04:17 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/17/17 04:17 1634-04-4 Naphthalene ND ug/L 2.0 1.0 1 03/17/17 04:17 91-20-3 n-Propylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:17 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/17/17 04:17 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 04:17 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 04:17 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 23 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-10 Lab ID: 92333647010 Collected: 03/14/17 10:10 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/17/17 04:17 127-18-4 Toluene ND ug/L 0.50 0.25 1 03/17/17 04:17 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 04:17 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 04:17 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:17 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:17 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:17 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/17/17 04:17 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:17 96-18-4 1,2,4-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:17 95-63-6 1,3,5-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:17 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/17/17 04:17 75-01-4 m&p-Xylene ND ug/L 1.0 0.50 1 03/17/17 04:17 179601-23-1 o-Xylene ND ug/L 0.50 0.25 1 03/17/17 04:17 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 102 % 70-130 1 03/17/17 04:17 17060-07-0 4-Bromofluorobenzene (S) 97 % 70-130 1 03/17/17 04:17 460-00-4 Toluene-d8 (S) 99 % 70-130 1 03/17/17 04:17 2037-26-5 300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Sulfate 39.6 mg/L 2.0 1.0 1 03/22/1713:21 14808-79-8 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 24 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-11 Lab ID: 92333647011 Collected: 03/14/17 12:20 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene ND ug/L 0.50 0.25 1 03/17/17 04:34 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/17/17 04:34 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/17/17 04:34 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/17/17 04:34 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/17/17 04:34 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/17/17 04:34 74-83-9 n-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:34 104-51-8 sec-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:34 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/17/17 04:34 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/17/17 04:34 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:34 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/17/17 04:34 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/17/17 04:34 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/17/17 04:34 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 04:34 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 04:34 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/17/17 04:34 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/17/17 04:34 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/17/17 04:34 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/17/17 04:34 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:34 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:34 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:34 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/17/17 04:34 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:34 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:34 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:34 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:34 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:34 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:34 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:34 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:34 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 04:34 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 04:34 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 04:34 10061-02-6 Diisopropyl ether ND ug/L 0.50 0.25 1 03/17/17 04:34 108-20-3 Ethylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:34 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/17/17 04:34 87-68-3 Isopropylbenzene (Cumene) ND ug/L 0.50 0.25 1 03/17/17 04:34 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/17/17 04:34 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/17/17 04:34 1634-04-4 Naphthalene ND ug/L 2.0 1.0 1 03/17/17 04:34 91-20-3 n-Propylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:34 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/17/17 04:34 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 04:34 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 04:34 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 25 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-11 Lab ID: 92333647011 Collected: 03/14/17 12:20 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/17/17 04:34 127-18-4 Toluene ND ug/L 0.50 0.25 1 03/17/17 04:34 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 04:34 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 04:34 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:34 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:34 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:34 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/17/17 04:34 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:34 96-18-4 1,2,4-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:34 95-63-6 1,3,5-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:34 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/17/17 04:34 75-01-4 m&p-Xylene ND ug/L 1.0 0.50 1 03/17/17 04:34 179601-23-1 o-Xylene ND ug/L 0.50 0.25 1 03/17/17 04:34 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 99 % 70-130 1 03/17/17 04:34 17060-07-0 4-Bromofluorobenzene (S) 96 % 70-130 1 03/17/17 04:34 460-00-4 Toluene-d8 (S) 98 % 70-130 1 03/17/17 04:34 2037-26-5 300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Sulfate 33.9 mg/L 2.0 1.0 1 03/22/1713:21 14808-79-8 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 26 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-12 Lab ID: 92333647012 Collected: 03/14/17 10:55 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene ND ug/L 0.50 0.25 1 03/17/17 04:51 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/17/17 04:51 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/17/17 04:51 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/17/17 04:51 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/17/17 04:51 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/17/17 04:51 74-83-9 n-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:51 104-51-8 sec-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:51 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/17/17 04:51 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/17/17 04:51 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:51 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/17/17 04:51 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/17/17 04:51 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/17/17 04:51 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 04:51 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 04:51 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/17/17 04:51 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/17/17 04:51 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/17/17 04:51 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/17/17 04:51 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:51 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:51 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 04:51 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/17/17 04:51 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:51 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:51 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:51 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:51 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:51 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:51 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:51 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:51 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 04:51 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 04:51 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 04:51 10061-02-6 Diisopropyl ether 0.85 ug/L 0.50 0.25 1 03/17/17 04:51 108-20-3 Ethylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:51 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/17/17 04:51 87-68-3 Isopropylbenzene (Cumene) ND ug/L 0.50 0.25 1 03/17/17 04:51 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/17/17 04:51 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/17/17 04:51 1634-04-4 Naphthalene ND ug/L 2.0 1.0 1 03/17/17 04:51 91-20-3 n-Propylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:51 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/17/17 04:51 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 04:51 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 04:51 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 27 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-12 Lab ID: 92333647012 Collected: 03/14/17 10:55 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/17/17 04:51 127-18-4 Toluene ND ug/L 0.50 0.25 1 03/17/17 04:51 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 04:51 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 04:51 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:51 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 04:51 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/17/17 04:51 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/17/17 04:51 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/17/17 04:51 96-18-4 1,2,4-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:51 95-63-6 1,3,5-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 04:51 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/17/17 04:51 75-01-4 m&p-Xylene ND ug/L 1.0 0.50 1 03/17/17 04:51 179601-23-1 o-Xylene ND ug/L 0.50 0.25 1 03/17/17 04:51 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 102 % 70-130 1 03/17/17 04:51 17060-07-0 4-Bromofluorobenzene (S) 96 % 70-130 1 03/17/17 04:51 460-00-4 Toluene-d8 (S) 99 % 70-130 1 03/17/17 04:51 2037-26-5 300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Sulfate 11.1 mg/L 2.0 1.0 1 03/22/1713:21 14808-79-8 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 28 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-13 Lab ID: 92333647013 Collected: 03/14/17 13:10 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene 26.6 ug/L 0.50 0.25 1 03/17/17 07:40 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/17/17 07:40 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/17/17 07:40 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/17/17 07:40 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/17/17 07:40 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/17/17 07:40 74-83-9 n-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 07:40 104-51-8 sec-Butylbenzene 4.7 ug/L 0.50 0.25 1 03/17/17 07:40 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/17/17 07:40 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/17/17 07:40 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/17/17 07:40 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/17/17 07:40 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/17/17 07:40 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/17/17 07:40 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 07:40 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 07:40 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/17/17 07:40 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/17/17 07:40 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/17/17 07:40 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/17/17 07:40 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 07:40 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 07:40 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 07:40 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/17/17 07:40 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 07:40 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 07:40 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 07:40 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 07:40 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 07:40 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 07:40 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 07:40 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 07:40 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 07:40 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 07:40 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 07:40 10061-02-6 Diisopropyl ether 1.3 ug/L 0.50 0.25 1 03/17/17 07:40 108-20-3 Ethylbenzene 182 ug/L 0.50 0.25 1 03/17/17 07:40 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/17/17 07:40 87-68-3 Isopropylbenzene (Cumene) 29.4 ug/L 0.50 0.25 1 03/17/17 07:40 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/17/17 07:40 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/17/17 07:40 1634-04-4 Naphthalene 17.9 ug/L 2.0 1.0 1 03/17/17 07:40 91-20-3 n-Propylbenzene 76.1 ug/L 0.50 0.25 1 03/17/17 07:40 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/17/17 07:40 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 07:40 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 07:40 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 29 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: MW-13 Lab ID: 92333647013 Collected: 03/14/17 13:10 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/17/17 07:40 127-18-4 Toluene 4.6 ug/L 0.50 0.25 1 03/17/17 07:40 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 07:40 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 07:40 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 07:40 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 07:40 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/17/17 07:40 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/17/17 07:40 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/17/17 07:40 96-18-4 1,2,4-Trimethylbenzene 187 ug/L 0.50 0.25 1 03/17/17 07:40 95-63-6 1,3,5-Trimethylbenzene 8.8 ug/L 0.50 0.25 1 03/17/17 07:40 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/17/17 07:40 75-01-4 m&p-Xylene 51.6 ug/L 1.0 0.50 1 03/17/17 07:40 179601-23-1 o-Xylene 7.4 ug/L 0.50 0.25 1 03/17/17 07:40 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 103 % 70-130 1 03/17/17 07:40 17060-07-0 4-Bromofluorobenzene (S) 96 % 70-130 1 03/17/17 07:40 460-00-4 Toluene-d8 (S) 99 % 70-130 1 03/17/17 07:40 2037-26-5 300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Sulfate 3.4 mg/L 2.0 1.0 1 03/25/1713:09 14808-79-8 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 30 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: WSW-10 Lab ID: 92333647014 Collected: 03/14/17 15:10 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene ND ug/L 0.50 0.25 1 03/17/17 05:08 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/17/17 05:08 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/17/17 05:08 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/17/17 05:08 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/17/17 05:08 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/17/17 05:08 74-83-9 n-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 05:08 104-51-8 sec-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 05:08 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/17/17 05:08 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/17/17 05:08 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/17/17 05:08 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/17/17 05:08 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/17/17 05:08 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/17/17 05:08 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 05:08 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 05:08 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/17/17 05:08 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/17/17 05:08 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/17/17 05:08 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/17/17 05:08 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 05:08 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 05:08 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 05:08 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/17/17 05:08 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 05:08 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 05:08 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 05:08 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 05:08 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 05:08 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 05:08 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 05:08 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 05:08 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 05:08 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 05:08 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 05:08 10061-02-6 Diisopropyl ether ND ug/L 0.50 0.25 1 03/17/17 05:08 108-20-3 Ethylbenzene ND ug/L 0.50 0.25 1 03/17/17 05:08 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/17/17 05:08 87-68-3 Isopropylbenzene (Cumene) ND ug/L 0.50 0.25 1 03/17/17 05:08 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/17/17 05:08 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/17/17 05:08 1634-04-4 Naphthalene ND ug/L 2.0 1.0 1 03/17/17 05:08 91-20-3 n-Propylbenzene ND ug/L 0.50 0.25 1 03/17/17 05:08 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/17/17 05:08 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 05:08 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 05:08 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 31 of 54 aceAnalytical —pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: WSW-10 Lab ID: 92333647014 Collected: 03/14/17 15:10 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/17/17 05:08 127-18-4 Toluene ND ug/L 0.50 0.25 1 03/17/17 05:08 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 05:08 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 05:08 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 05:08 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 05:08 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/17/17 05:08 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/17/17 05:08 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/17/17 05:08 96-18-4 1,2,4-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 05:08 95-63-6 1,3,5-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 05:08 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/17/17 05:08 75-01-4 m&p-Xylene ND ug/L 1.0 0.50 1 03/17/17 05:08 179601-23-1 o-Xylene ND ug/L 0.50 0.25 1 03/17/17 05:08 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 99 % 70-130 1 03/17/17 05:08 17060-07-0 4-Bromofluorobenzene (S) 97 % 70-130 1 03/17/17 05:08 460-00-4 Toluene-d8 (S) 99 % 70-130 1 03/17/17 05:08 2037-26-5 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 32 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: WSW-11 Lab ID: 92333647015 Collected: 03/14/17 15:10 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Benzene ND ug/L 0.50 0.25 1 03/17/17 05:25 71-43-2 Bromobenzene ND ug/L 0.50 0.25 1 03/17/17 05:25 108-86-1 Bromochloromethane ND ug/L 0.50 0.25 1 03/17/17 05:25 74-97-5 Bromodichloromethane ND ug/L 0.50 0.25 1 03/17/17 05:25 75-27-4 Bromoform ND ug/L 0.50 0.25 1 03/17/17 05:25 75-25-2 Bromomethane ND ug/L 5.0 0.50 1 03/17/17 05:25 74-83-9 n-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 05:25 104-51-8 sec-Butylbenzene ND ug/L 0.50 0.25 1 03/17/17 05:25 135-98-8 tert-Butyl benzene ND ug/L 0.50 0.25 1 03/17/17 05:25 98-06-6 Carbon tetrachloride ND ug/L 0.50 0.25 1 03/17/17 05:25 56-23-5 Chlorobenzene ND ug/L 0.50 0.25 1 03/17/17 05:25 108-90-7 Chloroethane ND ug/L 1.0 0.50 1 03/17/17 05:25 75-00-3 Chloroform ND ug/L 0.50 0.25 1 03/17/17 05:25 67-66-3 Chloromethane ND ug/L 1.0 0.50 1 03/17/17 05:25 74-87-3 2-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 05:25 95-49-8 4-Chlorotoluene ND ug/L 0.50 0.25 1 03/17/17 05:25 106-43-4 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.50 1 03/17/17 05:25 96-12-8 Dibromochloromethane ND ug/L 0.50 0.25 1 03/17/17 05:25 124-48-1 1,2-Dibromoethane (EDB) ND ug/L 0.50 0.25 1 03/17/17 05:25 106-93-4 Dibromomethane ND ug/L 0.50 0.25 1 03/17/17 05:25 74-95-3 1,2-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 05:25 95-50-1 1,3-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 05:25 541-73-1 1,4-Dichlorobenzene ND ug/L 0.50 0.25 1 03/17/17 05:25 106-46-7 Dichlorodifluoromethane ND ug/L 0.50 0.25 1 03/17/17 05:25 75-71-8 1,1-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 05:25 75-34-3 1,2-Dichloroethane ND ug/L 0.50 0.25 1 03/17/17 05:25 107-06-2 1,1-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 05:25 75-35-4 cis-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 05:25 156-59-2 trans-1,2-Dichloroethene ND ug/L 0.50 0.25 1 03/17/17 05:25 156-60-5 1,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 05:25 78-87-5 1,3-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 05:25 142-28-9 2,2-Dichloropropane ND ug/L 0.50 0.25 1 03/17/17 05:25 594-20-7 1,1-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 05:25 563-58-6 cis-1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 05:25 10061-01-5 trans- 1,3-Dichloropropene ND ug/L 0.50 0.25 1 03/17/17 05:25 10061-02-6 Diisopropyl ether ND ug/L 0.50 0.25 1 03/17/17 05:25 108-20-3 Ethylbenzene ND ug/L 0.50 0.25 1 03/17/17 05:25 100-41-4 Hexachloro-1,3-butadiene ND ug/L 2.0 1.0 1 03/17/17 05:25 87-68-3 Isopropylbenzene (Cumene) ND ug/L 0.50 0.25 1 03/17/17 05:25 98-82-8 Methylene Chloride ND ug/L 2.0 1.0 1 03/17/17 05:25 75-09-2 Methyl-tert-butyl ether ND ug/L 0.50 0.25 1 03/17/17 05:25 1634-04-4 Naphthalene ND ug/L 2.0 1.0 1 03/17/17 05:25 91-20-3 n-Propylbenzene ND ug/L 0.50 0.25 1 03/17/17 05:25 103-65-1 Styrene ND ug/L 0.50 0.25 1 03/17/17 05:25 100-42-5 1,1,1,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 05:25 630-20-6 1,1,2,2-Tetrachloroethane ND ug/L 0.50 0.25 1 03/17/17 05:25 79-34-5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 33 of 54 aceAnalytical —pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 ANALYTICAL RESULTS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Sample: WSW-11 Lab ID: 92333647015 Collected: 03/14/17 15:10 Received: 03/16/17 08:30 Matrix: Water Report Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual 6200B MSV Analytical Method: SM 6200B Tetrachloroethene ND ug/L 0.50 0.25 1 03/17/17 05:25 127-18-4 Toluene ND ug/L 0.50 0.25 1 03/17/17 05:25 108-88-3 1,2,3-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 05:25 87-61-6 1,2,4-Trichlorobenzene ND ug/L 2.0 1.0 1 03/17/17 05:25 120-82-1 1,1,1-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 05:25 71-55-6 1,1,2-Trichloroethane ND ug/L 0.50 0.25 1 03/17/17 05:25 79-00-5 Trichloroethene ND ug/L 0.50 0.25 1 03/17/17 05:25 79-01-6 Trichlorofluoromethane ND ug/L 1.0 0.50 1 03/17/17 05:25 75-69-4 1,2,3-Trichloropropane ND ug/L 0.50 0.25 1 03/17/17 05:25 96-18-4 1,2,4-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 05:25 95-63-6 1,3,5-Trimethylbenzene ND ug/L 0.50 0.25 1 03/17/17 05:25 108-67-8 Vinyl chloride ND ug/L 1.0 0.25 1 03/17/17 05:25 75-01-4 m&p-Xylene ND ug/L 1.0 0.50 1 03/17/17 05:25 179601-23-1 o-Xylene ND ug/L 0.50 0.25 1 03/17/17 05:25 95-47-6 Surrogates 1,2-Dichloroethane-d4 (S) 103 % 70-130 1 03/17/17 05:25 17060-07-0 4-Bromofluorobenzene (S) 96 % 70-130 1 03/17/17 05:25 460-00-4 Toluene-d8 (S) 99 % 70-130 1 03/17/17 05:25 2037-26-5 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Page 34 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 QC Batch: 352561 Analysis Method: SM 6200B QC Batch Method: SM 6200B Analysis Description: 6200E MSV Associated Lab Samples: 92333647001, 92333647002 METHOD BLANK: 1955890 Associated Lab Samples: 92333647001, 92333647002 Parameter Units Matrix: Blank Result Water Reporting Limit MDL Analyzed 1,1,1,2-Tetrachloroethane ug/L ND 0.50 0.25 03/16/17 17:35 1,1,1-Trichloroethane ug/L ND 0.50 0.25 03/16/17 17:35 1,1,2,2-Tetrachloroethane ug/L ND 0.50 0.25 03/16/17 17:35 1,1,2-Trichloroethane ug/L ND 0.50 0.25 03/16/17 17:35 1,1-Dichloroethane ug/L ND 0.50 0.25 03/16/17 17:35 1,1-Dichloroethene ug/L ND 0.50 0.25 03/16/17 17:35 1,1-Dichloropropene ug/L ND 0.50 0.25 03/16/17 17:35 1,2,3-Trichlorobenzene ug/L ND 2.0 1.0 03/16/17 17:35 1,2,3-Trichloropropane ug/L ND 0.50 0.25 03/16/17 17:35 1,2,4-Trichlorobenzene ug/L ND 2.0 1.0 03/16/17 17:35 1,2,4-Trimethylbenzene ug/L ND 0.50 0.25 03/16/17 17:35 1,2-Dibromo-3-chloropropane ug/L ND 1.0 0.50 03/16/17 17:35 1,2-Dibromoethane (EDB) ug/L ND 0.50 0.25 03/16/17 17:35 1,2-Dichlorobenzene ug/L ND 0.50 0.25 03/16/17 17:35 1,2-Dichloroethane ug/L ND 0.50 0.25 03/16/17 17:35 1,2-Dichloropropane ug/L ND 0.50 0.25 03/16/17 17:35 1,3,5-Trimethylbenzene ug/L ND 0.50 0.25 03/16/17 17:35 1,3-Dichlorobenzene ug/L ND 0.50 0.25 03/16/17 17:35 1,3-Dichloropropane ug/L ND 0.50 0.25 03/16/17 17:35 1,4-Dichlorobenzene ug/L ND 0.50 0.25 03/16/17 17:35 2,2-Dichloropropane ug/L ND 0.50 0.25 03/16/17 17:35 2-Chlorotoluene ug/L ND 0.50 0.25 03/16/17 17:35 4-Chlorotoluene ug/L ND 0.50 0.25 03/16/17 17:35 Benzene ug/L ND 0.50 0.25 03/16/17 17:35 Bromobenzene ug/L ND 0.50 0.25 03/16/17 17:35 Bromochloromethane ug/L ND 0.50 0.25 03/16/17 17:35 Bromodichloromethane ug/L ND 0.50 0.25 03/16/17 17:35 Bromoform ug/L ND 0.50 0.25 03/16/17 17:35 Bromomethane ug/L ND 5.0 0.50 03/16/17 17:35 Carbon tetrachloride ug/L ND 0.50 0.25 03/16/17 17:35 Chlorobenzene ug/L ND 0.50 0.25 03/16/17 17:35 Chloroethane ug/L ND 1.0 0.50 03/16/17 17:35 Chloroform ug/L ND 0.50 0.25 03/16/17 17:35 Chloromethane ug/L ND 1.0 0.50 03/16/17 17:35 cis-1,2-Dichloroethene ug/L ND 0.50 0.25 03/16/17 17:35 cis-1,3-Dichloropropene ug/L ND 0.50 0.25 03/16/17 17:35 Dibromochloromethane ug/L ND 0.50 0.25 03/16/17 17:35 Dibromomethane ug/L ND 0.50 0.25 03/16/17 17:35 Dichlorodifluoromethane ug/L ND 0.50 0.25 03/16/17 17:35 Diisopropyl ether ug/L ND 0.50 0.25 03/16/17 17:35 Ethylbenzene ug/L ND 0.50 0.25 03/16/17 17:35 Qualifiers Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 35 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 METHOD BLANK: 1955890 Associated Lab Samples: 92333647001, 92333647002 Parameter Units Matrix: Blank Result Water Reporting Limit MDL Analyzed Hexachloro-1,3-butadiene ug/L ND 2.0 1.0 03/16/17 17:35 Isopropylbenzene (Cumene) ug/L ND 0.50 0.25 03/16/17 17:35 m&p-Xylene ug/L ND 1.0 0.50 03/16/17 17:35 Methyl-tert-butyl ether ug/L ND 0.50 0.25 03/16/17 17:35 Methylene Chloride ug/L ND 2.0 1.0 03/16/17 17:35 n-Butylbenzene ug/L ND 0.50 0.25 03/16/17 17:35 n-Propylbenzene ug/L ND 0.50 0.25 03/16/17 17:35 Naphthalene ug/L ND 2.0 1.0 03/16/17 17:35 o-Xylene ug/L ND 0.50 0.25 03/16/17 17:35 sec-Butylbenzene ug/L ND 0.50 0.25 03/16/17 17:35 Styrene ug/L ND 0.50 0.25 03/16/17 17:35 tert-Butyl benzene ug/L ND 0.50 0.25 03/16/17 17:35 Tetrachloroethene ug/L ND 0.50 0.25 03/16/17 17:35 Toluene ug/L ND 0.50 0.25 03/16/17 17:35 trans-1,2-Dichloroethene ug/L ND 0.50 0.25 03/16/17 17:35 trans- 1,3-Dichloropropene ug/L ND 0.50 0.25 03/16/17 17:35 Trichloroethene ug/L ND 0.50 0.25 03/16/17 17:35 Trichlorofluoromethane ug/L ND 1.0 0.50 03/16/17 17:35 Vinyl chloride ug/L ND 1.0 0.25 03/16/17 17:35 1,2-Dichloroethane-d4 (S) % 100 70-130 03/16/17 17:35 4-Bromofluorobenzene (S) % 93 70-130 03/16/17 17:35 Toluene-d8 (S) % 98 70-130 03/16/17 17:35 LABORATORY CONTROL SAMPLE: Parameter 1955891 Units Spike Conc. LCS Result LCS % Rec % Rec Limits 1,1,1,2-Tetrachloroethane ug/L 50 49.0 98 60-140 1,1,1-Trichloroethane ug/L 50 46.7 93 60-140 1,1,2,2-Tetrachloroethane ug/L 50 49.5 99 60-140 1,1,2-Trichloroethane ug/L 50 48.4 97 60-140 1,1-Dichloroethane ug/L 50 46.1 92 60-140 1,1-Dichloroethene ug/L 50 48.1 96 60-140 1,1-Dichloropropene ug/L 50 47.4 95 60-140 1,2,3-Trichlorobenzene ug/L 50 48.3 97 60-140 1,2,3-Trichloropropane ug/L 50 50.0 100 60-140 1,2,4-Trichlorobenzene ug/L 50 47.4 95 60-140 1,2,4-Trimethylbenzene ug/L 50 49.6 99 60-140 1,2-Dibromo-3-chloropropane ug/L 50 51.6 103 60-140 1,2-Dibromoethane (EDB) ug/L 50 47.1 94 60-140 1,2-Dichlorobenzene ug/L 50 48.9 98 60-140 1,2-Dichloroethane ug/L 50 42.8 86 60-140 1,2-Dichloropropane ug/L 50 47.4 95 60-140 1,3,5-Trimethylbenzene ug/L 50 49.0 98 60-140 1,3-Dichlorobenzene ug/L 50 47.3 95 60-140 Qualifiers Qualifiers Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 36 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 LABORATORY CONTROL SAMPLE: Parameter 1955891 Units Spike Conc. LCS Result LCS % Rec % Rec Limits 1,3-Dichloropropane ug/L 50 48.8 98 60-140 1,4-Dichlorobenzene ug/L 50 47.4 95 60-140 2,2-Dichloropropane ug/L 50 52.2 104 60-140 2-Chlorotoluene ug/L 50 49.9 100 60-140 4-Chlorotoluene ug/L 50 48.8 98 60-140 Benzene ug/L 50 48.0 96 60-140 Bromobenzene ug/L 50 50.3 101 60-140 Bromochloromethane ug/L 50 46.6 93 60-140 Bromodichloromethane ug/L 50 49.8 100 60-140 Bromoform ug/L 50 49.5 99 60-140 Bromomethane ug/L 50 42.8 86 60-140 Carbon tetrachloride ug/L 50 47.1 94 60-140 Chlorobenzene ug/L 50 46.9 94 60-140 Chloroethane ug/L 50 49.5 99 60-140 Chloroform ug/L 50 45.4 91 60-140 Chloromethane ug/L 50 40.6 81 60-140 cis-1,2-Dichloroethene ug/L 50 42.9 86 60-140 cis-1,3-Dichloropropene ug/L 50 49.2 98 60-140 Dibromochloromethane ug/L 50 49.4 99 60-140 Dibromomethane ug/L 50 46.6 93 60-140 Dichlorodifluoromethane ug/L 50 46.2 92 60-140 Diisopropyl ether ug/L 50 45.9 92 60-140 Ethylbenzene ug/L 50 47.5 95 60-140 Hexachloro-1,3-butadiene ug/L 50 49.9 100 60-140 Isopropylbenzene (Cumene) ug/L 50 48.2 96 60-140 m&p-Xylene ug/L 100 96.2 96 60-140 Methyl-tert-butyl ether ug/L 50 48.7 97 60-140 Methylene Chloride ug/L 50 42.6 85 60-140 n-Butylbenzene ug/L 50 48.7 97 60-140 n-Propylbenzene ug/L 50 49.3 99 60-140 Naphthalene ug/L 50 50.8 102 60-140 o-Xylene ug/L 50 47.9 96 60-140 sec-Butylbenzene ug/L 50 49.8 100 60-140 Styrene ug/L 50 49.5 99 60-140 tert-Butyl benzene ug/L 50 40.8 82 60-140 Tetrachloroethene ug/L 50 46.1 92 60-140 Toluene ug/L 50 47.4 95 60-140 trans-1,2-Dichloroethene ug/L 50 46.7 93 60-140 trans- 1,3-Dichloropropene ug/L 50 51.2 102 60-140 Trichloroethene ug/L 50 45.3 91 60-140 Trichlorofluoromethane ug/L 50 49.7 99 60-140 Vinyl chloride ug/L 50 40.7 81 60-140 1,2-Dichloroethane-d4 (S) % 101 70-130 4-Bromofluorobenzene (S) % 97 70-130 Toluene-d8 (S) % 100 70-130 Qualifiers Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 37 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 1955892 1955893 MS MSD 92333647002 Spike Spike MS MSD MS MSD Parameter Units Result Conc. Conc. Result Result % Rec % Rec 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1, 2,2-Tetrachloroethane 1,1, 2-Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethyl benzene 1,2-Dibromo-3- chloropropane 1,2-Dibromoethane (EDB) 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethyl benzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Diisopropyl ether Ethylbenzene Hexachloro-1,3-butadiene Isopropylbenzene (Cumene) m&p-Xylene Methyl-tert-butyl ether ug/L ND 20 20 21.0 21.6 105 108 ug/L ND 20 20 20.7 21.7 104 109 ug/L ND 20 20 21.0 22.2 105 111 ug/L ND 20 20 20.4 21.7 102 108 ug/L ND 20 20 20.2 21.5 101 107 ug/L ND 20 20 21.2 22.1 106 111 ug/L ND 20 20 21.4 22.5 107 112 ug/L ND 20 20 21.9 23.1 109 115 ug/L ND 20 20 21.9 23.0 110 115 ug/L ND 20 20 21.4 22.7 107 113 ug/L ND 20 20 23.1 23.9 116 119 ug/L ND 20 20 22.0 22.0 110 110 % Rec Max Limits RPD RPD Qual 60-140 3 30 60-140 5 30 60-140 6 30 60-140 6 30 60-140 6 30 60-140 4 30 60-140 5 30 60-140 5 30 60-140 5 30 60-140 6 30 60-140 3 30 60-140 0 30 ug/L ND 20 20 20.1 20.9 101 105 60-140 4 30 ug/L ND 20 20 21.5 22.8 108 114 60-140 6 30 ug/L ND 20 20 18.7 19.3 93 96 60-140 3 30 ug/L ND 20 20 20.5 21.6 102 108 60-140 6 30 ug/L ND 20 20 22.5 23.5 112 117 60-140 4 30 ug/L ND 20 20 21.4 22.3 107 111 60-140 4 30 ug/L ND 20 20 21.3 22.6 107 113 60-140 6 30 ug/L ND 20 20 21.1 22.3 106 111 60-140 5 30 ug/L ND 20 20 21.5 22.3 107 112 60-140 4 30 ug/L ND 20 20 22.2 23.7 111 119 60-140 6 30 ug/L ND 20 20 22.1 23.5 111 117 60-140 6 30 ug/L ND 20 20 22.1 22.9 110 115 60-140 4 30 ug/L ND 20 20 22.2 23.3 111 116 60-140 5 30 ug/L ND 20 20 19.9 21.0 100 105 60-140 6 30 ug/L ND 20 20 20.4 21.6 102 108 60-140 6 30 ug/L ND 20 20 19.3 20.6 97 103 60-140 6 30 ug/L ND 20 20 10.5 13.0 53 65 60-140 21 30 M1 ug/L ND 20 20 20.3 21.5 101 107 60-140 6 30 ug/L ND 20 20 21.2 22.0 106 110 60-140 4 30 ug/L ND 20 20 21.4 21.2 107 106 60-140 1 30 ug/L ND 20 20 20.3 20.8 102 104 60-140 2 30 ug/L ND 20 20 17.5 20.9 88 105 60-140 18 30 ug/L ND 20 20 18.5 19.7 93 98 60-140 6 30 ug/L ND 20 20 20.5 21.7 102 108 60-140 6 30 ug/L ND 20 20 19.7 21.1 98 106 60-140 7 30 ug/L ND 20 20 19.8 21.2 99 106 60-140 7 30 ug/L ND 20 20 21.5 22.7 108 113 60-140 5 30 ug/L ND 20 20 19.4 20.2 97 101 60-140 4 30 ug/L ND 20 20 22.6 22.9 113 115 60-140 2 30 ug/L ND 20 20 22.7 25.2 113 126 60-140 10 30 ug/L ND 20 20 21.9 22.3 110 112 60-140 2 30 ug/L ND 40 40 44.7 46.0 112 115 60-140 3 30 ug/L ND 20 20 20.8 21.8 104 109 60-140 4 30 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 38 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 1955892 1955893 MS MSD 92333647002 Spike Spike MS MSD MS MSD % Rec Max Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual Methylene Chloride ug/L ND 20 20 18.1 18.5 90 92 60-140 2 30 n-Butylbenzene ug/L ND 20 20 21.6 23.0 108 115 60-140 6 30 n-Propylbenzene ug/L ND 20 20 22.7 23.7 113 118 60-140 4 30 Naphthalene ug/L ND 20 20 24.1 25.1 121 125 60-140 4 30 o-Xylene ug/L ND 20 20 22.1 22.6 110 113 60-140 2 30 sec-Butylbenzene ug/L ND 20 20 23.0 24.1 115 121 60-140 5 30 Styrene ug/L ND 20 20 21.4 21.9 107 109 60-140 2 30 tert-Butylbenzene ug/L ND 20 20 18.6 19.6 93 98 60-140 5 30 Tetrachloroethene ug/L ND 20 20 21.4 21.9 107 110 60-140 2 30 Toluene ug/L ND 20 20 22.3 22.8 111 114 60-140 2 30 trans-1,2-Dichloroethene ug/L ND 20 20 20.7 22.0 103 110 60-140 6 30 trans-1,3-Dichloropropene ug/L ND 20 20 20.1 21.5 101 107 60-140 7 30 Trichloroethene ug/L ND 20 20 20.1 21.1 100 105 60-140 5 30 Trichlorofluoromethane ug/L ND 20 20 22.3 23.1 111 116 60-140 4 30 Vinyl chloride ug/L ND 20 20 17.4 18.5 87 92 60-140 6 30 1,2-Dichloroethane-d4 (S) % 99 100 70-130 4-Bromofluorobenzene (S) % 99 98 70-130 Toluene-d8 (S) % 98 98 70-130 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 39 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 QC Batch: 352562 Analysis Method: SM 6200B QC Batch Method: SM 6200B Analysis Description: 6200E MSV Associated Lab Samples: 92333647003, 92333647004, 92333647005, 92333647006, 92333647007, 92333647008, 92333647009, 92333647010,92333647011,92333647012,92333647013,92333647014,92333647015 METHOD BLANK: 1955895 Matrix: Water Associated Lab Samples: 92333647003, 92333647004, 92333647005, 92333647006, 92333647007, 92333647008, 92333647009, 92333647010,92333647011,92333647012,92333647013,92333647014,92333647015 Blank Reporting Parameter Units Result Limit MDL Analyzed Qualifiers 1,1,1,2-Tetrachloroethane ug/L ND 0.50 0.25 03/17/17 02:19 1,1,1-Trichloroethane ug/L ND 0.50 0.25 03/17/17 02:19 1,1,2,2-Tetrachloroethane ug/L ND 0.50 0.25 03/17/17 02:19 1,1,2-Trichloroethane ug/L ND 0.50 0.25 03/17/17 02:19 1,1-Dichloroethane ug/L ND 0.50 0.25 03/17/17 02:19 1,1-Dichloroethene ug/L ND 0.50 0.25 03/17/17 02:19 1,1-Dichloropropene ug/L ND 0.50 0.25 03/17/17 02:19 1,2,3-Trichlorobenzene ug/L ND 2.0 1.0 03/17/17 02:19 1,2,3-Trichloropropane ug/L ND 0.50 0.25 03/17/17 02:19 1,2,4-Trichlorobenzene ug/L ND 2.0 1.0 03/17/17 02:19 1,2,4-Trimethylbenzene ug/L ND 0.50 0.25 03/17/17 02:19 1,2-Dibromo-3-chloropropane ug/L ND 1.0 0.50 03/17/17 02:19 1,2-Dibromoethane (EDB) ug/L ND 0.50 0.25 03/17/17 02:19 1,2-Dichlorobenzene ug/L ND 0.50 0.25 03/17/17 02:19 1,2-Dichloroethane ug/L ND 0.50 0.25 03/17/17 02:19 1,2-Dichloropropane ug/L ND 0.50 0.25 03/17/17 02:19 1,3,5-Trimethylbenzene ug/L ND 0.50 0.25 03/17/17 02:19 1,3-Dichlorobenzene ug/L ND 0.50 0.25 03/17/17 02:19 1,3-Dichloropropane ug/L ND 0.50 0.25 03/17/17 02:19 1,4-Dichlorobenzene ug/L ND 0.50 0.25 03/17/17 02:19 2,2-Dichloropropane ug/L ND 0.50 0.25 03/17/17 02:19 2-Chlorotoluene ug/L ND 0.50 0.25 03/17/17 02:19 4-Chlorotoluene ug/L ND 0.50 0.25 03/17/17 02:19 Benzene ug/L ND 0.50 0.25 03/17/17 02:19 Bromobenzene ug/L ND 0.50 0.25 03/17/17 02:19 Bromochloromethane ug/L ND 0.50 0.25 03/17/17 02:19 Bromodichloromethane ug/L ND 0.50 0.25 03/17/17 02:19 Bromoform ug/L ND 0.50 0.25 03/17/17 02:19 Bromomethane ug/L ND 5.0 0.50 03/17/17 02:19 Carbon tetrachloride ug/L ND 0.50 0.25 03/17/17 02:19 Chlorobenzene ug/L ND 0.50 0.25 03/17/17 02:19 Chloroethane ug/L ND 1.0 0.50 03/17/17 02:19 Chloroform ug/L ND 0.50 0.25 03/17/17 02:19 Chloromethane ug/L ND 1.0 0.50 03/17/17 02:19 cis-1,2-Dichloroethene ug/L ND 0.50 0.25 03/17/17 02:19 cis-1,3-Dichloropropene ug/L ND 0.50 0.25 03/17/17 02:19 Dibromochloromethane ug/L ND 0.50 0.25 03/17/17 02:19 Dibromomethane ug/L ND 0.50 0.25 03/17/17 02:19 Dichlorodifluoromethane ug/L ND 0.50 0.25 03/17/17 02:19 Diisopropyl ether ug/L ND 0.50 0.25 03/17/17 02:19 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 40 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 METHOD BLANK: 1955895 Matrix: Water Associated Lab Samples: 92333647003, 92333647004, 92333647005, 92333647006, 92333647007, 92333647008, 92333647009, 92333647010,92333647011,92333647012,92333647013,92333647014,92333647015 Blank Reporting Parameter Units Result Limit MDL Analyzed Qualifiers Ethylbenzene ug/L ND 0.50 0.25 03/17/17 02:19 Hexachloro-1,3-butadiene ug/L ND 2.0 1.0 03/17/17 02:19 Isopropylbenzene (Cumene) ug/L ND 0.50 0.25 03/17/17 02:19 m&p-Xylene ug/L ND 1.0 0.50 03/17/17 02:19 Methyl-tert-butyl ether ug/L ND 0.50 0.25 03/17/17 02:19 Methylene Chloride ug/L ND 2.0 1.0 03/17/17 02:19 n-Butylbenzene ug/L ND 0.50 0.25 03/17/17 02:19 n-Propylbenzene ug/L ND 0.50 0.25 03/17/17 02:19 Naphthalene ug/L ND 2.0 1.0 03/17/17 02:19 o-Xylene ug/L ND 0.50 0.25 03/17/17 02:19 sec-Butylbenzene ug/L ND 0.50 0.25 03/17/17 02:19 Styrene ug/L ND 0.50 0.25 03/17/17 02:19 tert-Butyl benzene ug/L ND 0.50 0.25 03/17/17 02:19 Tetrachloroethene ug/L ND 0.50 0.25 03/17/17 02:19 Toluene ug/L ND 0.50 0.25 03/17/17 02:19 trans-1,2-Dichloroethene ug/L ND 0.50 0.25 03/17/17 02:19 trans- 1,3-Dichloropropene ug/L ND 0.50 0.25 03/17/17 02:19 Trichloroethene ug/L ND 0.50 0.25 03/17/17 02:19 Trichlorofluoromethane ug/L ND 1.0 0.50 03/17/17 02:19 Vinyl chloride ug/L ND 1.0 0.25 03/17/17 02:19 1,2-Dichloroethane-d4 (S) % 98 70-130 03/17/17 02:19 4-Bromofluorobenzene (S) % 96 70-130 03/17/17 02:19 Toluene-d8 (S) % 98 70-130 03/17/17 02:19 LABORATORY CONTROL SAMPLE: 1955896 Spike LCS LCS % Rec Parameter Units Conc. Result % Rec Limits Qualifiers 1,1,1,2-Tetrachloroethane ug/L 50 49.5 99 60-140 1,1,1-Trichloroethane ug/L 50 47.4 95 60-140 1,1,2,2-Tetrachloroethane ug/L 50 49.7 99 60-140 1,1,2-Trichloroethane ug/L 50 47.7 95 60-140 1,1-Dichloroethane ug/L 50 45.5 91 60-140 1,1-Dichloroethene ug/L 50 47.4 95 60-140 1,1-Dichloropropene ug/L 50 46.8 94 60-140 1,2,3-Trichlorobenzene ug/L 50 51.0 102 60-140 1,2,3-Trichloropropane ug/L 50 49.3 99 60-140 1,2,4-Trichlorobenzene ug/L 50 49.5 99 60-140 1,2,4-Trimethylbenzene ug/L 50 50.4 101 60-140 1,2-Dibromo-3-chloropropane ug/L 50 51.9 104 60-140 1,2-Dibromoethane (EDB) ug/L 50 47.2 94 60-140 1,2-Dichlorobenzene ug/L 50 49.4 99 60-140 1,2-Dichloroethane ug/L 50 42.2 84 60-140 1,2-Dichloropropane ug/L 50 47.7 95 60-140 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 41 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 LABORATORY CONTROL SAMPLE: Parameter 1955896 Units Spike Conc. LCS Result LCS % Rec % Rec Limits 1,3,5-Trimethylbenzene ug/L 50 50.1 100 60-140 1,3-Dichlorobenzene ug/L 50 47.8 96 60-140 1,3-Dichloropropane ug/L 50 49.9 100 60-140 1,4-Dichlorobenzene ug/L 50 47.9 96 60-140 2,2-Dichloropropane ug/L 50 49.3 99 60-140 2-Chlorotoluene ug/L 50 49.8 100 60-140 4-Chlorotoluene ug/L 50 49.9 100 60-140 Benzene ug/L 50 48.2 96 60-140 Bromobenzene ug/L 50 50.1 100 60-140 Bromochloromethane ug/L 50 46.9 94 60-140 Bromodichloromethane ug/L 50 48.9 98 60-140 Bromoform ug/L 50 48.5 97 60-140 Bromomethane ug/L 50 37.6 75 60-140 Carbon tetrachloride ug/L 50 46.9 94 60-140 Chlorobenzene ug/L 50 47.1 94 60-140 Chloroethane ug/L 50 44.7 89 60-140 Chloroform ug/L 50 45.1 90 60-140 Chloromethane ug/L 50 37.7 75 60-140 cis-1,2-Dichloroethene ug/L 50 42.0 84 60-140 cis-1,3-Dichloropropene ug/L 50 49.6 99 60-140 Dibromochloromethane ug/L 50 48.6 97 60-140 Dibromomethane ug/L 50 46.3 93 60-140 Dichlorodifluoromethane ug/L 50 45.0 90 60-140 Diisopropyl ether ug/L 50 44.7 89 60-140 Ethylbenzene ug/L 50 48.5 97 60-140 Hexachloro-1,3-butadiene ug/L 50 53.9 108 60-140 Isopropylbenzene (Cumene) ug/L 50 49.0 98 60-140 m&p-Xylene ug/L 100 97.7 98 60-140 Methyl-tert-butyl ether ug/L 50 48.1 96 60-140 Methylene Chloride ug/L 50 41.4 83 60-140 n-Butylbenzene ug/L 50 49.8 100 60-140 n-Propylbenzene ug/L 50 49.3 99 60-140 Naphthalene ug/L 50 52.8 106 60-140 o-Xylene ug/L 50 48.5 97 60-140 sec-Butylbenzene ug/L 50 50.7 101 60-140 Styrene ug/L 50 50.4 101 60-140 tert-Butyl benzene ug/L 50 41.6 83 60-140 Tetrachloroethene ug/L 50 47.5 95 60-140 Toluene ug/L 50 48.1 96 60-140 trans-1,2-Dichloroethene ug/L 50 46.1 92 60-140 trans- 1,3-Dichloropropene ug/L 50 50.2 100 60-140 Trichloroethene ug/L 50 45.8 92 60-140 Trichlorofluoromethane ug/L 50 47.9 96 60-140 Vinyl chloride ug/L 50 37.7 75 60-140 1,2-Dichloroethane-d4 (S) % 100 70-130 4-Bromofluorobenzene (S) % 100 70-130 Toluene-d8 (S) % 99 70-130 Qualifiers Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 42 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 1956734 1956735 MS MSD 92333647008 Spike Spike MS MSD MS MSD Parameter Units Result Conc. Conc. Result Result % Rec % Rec 1,1,1,2-Tetrachloroethane 1,1,1-Trichloroethane 1,1, 2,2-Tetrachloroethane 1,1, 2-Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-Dichloropropene 1,2,3-Trichlorobenzene 1,2,3-Trichloropropane 1,2,4-Trichlorobenzene 1,2,4-Trimethyl benzene 1,2-Dibromo-3- chloropropane 1,2-Dibromoethane (EDB) 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethyl benzene 1,3-Dichlorobenzene 1,3-Dichloropropane 1,4-Dichlorobenzene 2,2-Dichloropropane 2-Chlorotoluene 4-Chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene cis-1,3-Dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Diisopropyl ether Ethylbenzene Hexachloro-1,3-butadiene Isopropylbenzene (Cumene) m&p-Xylene Methyl-tert-butyl ether ug/L ND 20 20 22.4 20.9 112 104 ug/L ND 20 20 22.6 22.4 113 112 ug/L ND 20 20 22.3 21.4 111 107 ug/L ND 20 20 21.4 20.5 107 103 ug/L ND 20 20 21.7 21.7 108 108 ug/L ND 20 20 23.3 23.0 117 115 ug/L ND 20 20 22.9 23.2 114 116 ug/L ND 20 20 23.0 22.5 115 113 ug/L ND 20 20 22.4 21.0 112 105 ug/L ND 20 20 22.8 22.4 114 112 ug/L ND 20 20 23.6 22.6 118 113 ug/L ND 20 20 24.0 22.9 120 115 % Rec Max Limits RPD RPD Qual 60-140 7 30 60-140 1 30 60-140 4 30 60-140 4 30 60-140 0 30 60-140 2 30 60-140 1 30 60-140 2 30 60-140 6 30 60-140 2 30 60-140 4 30 60-140 4 30 ug/L ND 20 20 21.1 20.2 105 101 60-140 4 30 ug/L ND 20 20 23.1 21.8 115 109 60-140 6 30 ug/L ND 20 20 19.4 19.7 97 98 60-140 1 30 ug/L ND 20 20 21.8 21.2 109 106 60-140 3 30 ug/L ND 20 20 23.3 22.4 116 112 60-140 4 30 ug/L ND 20 20 22.0 21.2 110 106 60-140 4 30 ug/L ND 20 20 22.9 21.9 114 110 60-140 4 30 ug/L ND 20 20 22.2 21.4 111 107 60-140 4 30 ug/L ND 20 20 25.2 24.2 126 121 60-140 4 30 ug/L ND 20 20 23.4 22.8 117 114 60-140 3 30 ug/L ND 20 20 23.1 22.5 115 113 60-140 2 30 ug/L ND 20 20 22.3 21.8 112 109 60-140 2 30 ug/L ND 20 20 23.7 22.6 118 113 60-140 5 30 ug/L ND 20 20 22.4 21.3 112 107 60-140 5 30 ug/L ND 20 20 22.2 21.8 111 109 60-140 2 30 ug/L ND 20 20 21.0 20.5 105 103 60-140 2 30 ug/L ND 20 20 17.7 18.2 88 91 60-140 3 30 ug/L ND 20 20 22.3 21.9 111 110 60-140 1 30 ug/L ND 20 20 22.0 21.5 110 107 60-140 2 30 ug/L ND 20 20 22.1 21.6 111 108 60-140 3 30 ug/L ND 20 20 21.2 20.9 106 105 60-140 1 30 ug/L ND 20 20 21.0 20.4 105 102 60-140 3 30 ug/L ND 20 20 20.2 20.1 101 100 60-140 1 30 ug/L ND 20 20 22.5 21.8 113 109 60-140 3 30 ug/L ND 20 20 22.3 20.8 112 104 60-140 7 30 ug/L ND 20 20 21.3 20.0 106 100 60-140 6 30 ug/L ND 20 20 18.9 18.6 95 93 60-140 2 30 ug/L ND 20 20 20.9 20.9 105 105 60-140 0 30 ug/L ND 20 20 22.6 22.0 113 110 60-140 3 30 ug/L ND 20 20 26.7 26.1 134 130 60-140 2 30 ug/L ND 20 20 22.6 22.2 113 111 60-140 2 30 ug/L ND 40 40 45.5 44.1 113 110 60-140 3 30 ug/L ND 20 20 22.0 21.6 110 108 60-140 2 30 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 43 of 54 aceAnalytical -pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 1956734 1956735 MS MSD 92333647008 Spike Spike MS MSD MS MSD % Rec Max Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual Methylene Chloride ug/L ND 20 20 19.4 19.3 96 96 60-140 1 30 n-Butylbenzene ug/L ND 20 20 23.4 22.4 117 112 60-140 4 30 n-Propylbenzene ug/L ND 20 20 23.5 22.9 118 115 60-140 2 30 Naphthalene ug/L ND 20 20 24.3 23.7 122 119 60-140 3 30 o-Xylene ug/L ND 20 20 22.8 21.6 114 108 60-140 5 30 sec-Butylbenzene ug/L ND 20 20 24.0 23.2 120 116 60-140 3 30 Styrene ug/L ND 20 20 22.3 21.3 112 107 60-140 4 30 tert-Butylbenzene ug/L ND 20 20 19.5 18.8 98 94 60-140 4 30 Tetrachloroethene ug/L ND 20 20 22.2 21.5 111 107 60-140 3 30 Toluene ug/L ND 20 20 22.0 21.6 109 108 60-140 2 30 trans-1,2-Dichloroethene ug/L ND 20 20 22.2 22.4 111 112 60-140 1 30 trans-1,3-Dichloropropene ug/L ND 20 20 22.1 21.5 110 108 60-140 3 30 Trichloroethene ug/L ND 20 20 21.3 20.9 107 105 60-140 2 30 Trichlorofluoromethane ug/L ND 20 20 24.2 23.7 121 118 60-140 2 30 Vinyl chloride ug/L ND 20 20 18.8 18.6 94 93 60-140 1 30 1,2-Dichloroethane-d4 (S) % 101 102 70-130 4-Bromofluorobenzene (S) % 97 97 70-130 Toluene-d8 (S) % 98 99 70-130 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 44 of 54 aceAnalytical —pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 QC Batch: 352674 Analysis Method: EPA 300.0 QC Batch Method: EPA 300.0 Analysis Description: 300.0 IC Anions Associated Lab Samples: 92333647001, 92333647002, 92333647003, 92333647004, 92333647005, 92333647006, 92333647007 METHOD BLANK: 1956320 Matrix: Water Associated Lab Samples: 92333647001, 92333647002, 92333647003, 92333647004, 92333647005, 92333647006, 92333647007 Blank Reporting Parameter Units Result Limit MDL Analyzed Qualifiers Sulfate mg/L ND 2.0 1.0 03/17/1715:59 LABORATORY CONTROL SAMPLE: 1956321 Spike LCS LCS % Rec Parameter Units Conc. Result % Rec Limits Qualifiers Sulfate mg/L 50 46.3 93 90-110 MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 1956322 1956323 MS MSD 92333739001 Spike Spike MS MSD MS MSD % Rec Max Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual Sulfate mg/L 5.8 50 50 54.4 54.3 97 97 90-110 0 10 MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 1956324 1956325 MS MSD 92333433003 Spike Spike MS MSD MS MSD % Rec Max Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual Sulfate mg/L ND 50 50 48.3 48.2 96 96 90-110 0 10 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 45 of 54 aceAnalytical —pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 QC Batch: 353061 Analysis Method: EPA 300.0 QC Batch Method: EPA 300.0 Analysis Description: 300.0 IC Anions Associated Lab Samples: 92333647008, 92333647009, 92333647010, 92333647011, 92333647012 METHOD BLANK: 1958262 Matrix: Water Associated Lab Samples: 92333647008, 92333647009, 92333647010, 92333647011, 92333647012 Blank Reporting Parameter Units Result Limit MDL Analyzed Qualifiers Sulfate mg/L ND 2.0 1.0 03/22/1713:21 LABORATORY CONTROL SAMPLE: 1958263 Spike LCS LCS % Rec Parameter Units Conc. Result % Rec Limits Qualifiers Sulfate mg/L 50 49.1 98 90-110 MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 1958264 1958265 MS MSD 92333433002 Spike Spike MS MSD MS MSD % Rec Max Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual Sulfate mg/L 574 50 50 618 621 88 95 90-110 1 10 M6 MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 1958266 1958267 MS MSD 92333647010 Spike Spike MS MSD MS MSD % Rec Max Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual Sulfate mg/L 39.6 50 50 91.2 91.4 103 103 90-110 0 10 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 46 of 54 aceAnalytical —pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 QC Batch: 353775 Analysis Method: EPA 300.0 QC Batch Method: EPA 300.0 Analysis Description: 300.0 IC Anions Associated Lab Samples: 92333647013 METHOD BLANK: 1962584 Matrix: Water Associated Lab Samples: 92333647013 Blank Reporting Parameter Units Result Limit MDL Analyzed Qualifiers Sulfate mg/L ND 2.0 1.0 03/25/1713:09 LABORATORY CONTROL SAMPLE: 1962585 Spike LCS LCS % Rec Parameter Units Conc. Result % Rec Limits Qualifiers Sulfate mg/L 50 50.8 102 90-110 MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 1962586 1962587 MS MSD 92333647013 Spike Spike MS MSD MS MSD % Rec Max Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual Sulfate mg/L 3.4 50 50 53.0 53.0 99 99 90-110 0 10 MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 1962588 1962589 MS MSD 92334230006 Spike Spike MS MSD MS MSD % Rec Max Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual Sulfate mg/L ND 50 50 49.8 50.0 98 99 90-110 0 10 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 47 of 54 aceAnalytical —pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALIFIERS Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 DEFINITIONS DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot. ND - Not Detected at or above adjusted reporting limit. J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. MDL -Adjusted Method Detection Limit. PQL - Practical Quantitation Limit. RL - Reporting Limit. S - Surrogate 1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is a combined concentration. Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values. LCS(D) - Laboratory Control Sample (Duplicate) MS(D) - Matrix Spike (Duplicate) DUP - Sample Duplicate RPD - Relative Percent Difference NC - Not Calculable. SG - Silica Gel - Clean -Up U - Indicates the compound was analyzed for, but not detected. Acid preservation may not be appropriate for 2 Chloroethylvinyl ether. A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA Method 8260. N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for each analyte is a combined concentration. Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes. TN -The NELAC Institute. LABORATORIES PASI-A Pace Analytical Services - Asheville PASI-C Pace Analytical Services - Charlotte ANALYTE QUALIFIERS C9 Common Laboratory Contaminant. M1 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery. M6 Matrix spike and Matrix spike duplicate recovery not evaluated against control limits due to sample dilution. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, Date: 03/28/2017 04:32 PM without the written consent of Pace Analytical Services, LLC. Page 48 of 54 aceAnalytical —pacelabs.com Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 QUALITY CONTROL DATA CROSS REFERENCE TABLE Project: PRESLARS EXXON NC WBS#34348.3 Pace Project No.: 92333647 Lab ID Sample ID QC Batch Method QC Batch 92333647001 MW-1 SM 6200B 352561 92333647002 MW-2 SM 6200B 352561 92333647003 MW-3 SM 6200B 352562 92333647004 MW-4 SM 6200B 352562 92333647005 MW-5 SM 6200B 352562 92333647006 MW-6 SM 6200B 352562 92333647007 MW-7 SM 6200B 352562 92333647008 MW-8 SM 6200B 352562 92333647009 MW-9 SM 6200B 352562 92333647010 MW-10 SM 6200B 352562 92333647011 MW-11 SM 6200B 352562 92333647012 MW-12 SM 6200B 352562 92333647013 MW-13 SM 6200B 352562 92333647014 WSW-10 SM 6200E 352562 92333647015 WSW-11 SM 6200E 352562 92333647001 MW-1 EPA 300.0 352674 92333647002 MW-2 EPA 300.0 352674 92333647003 MW-3 EPA 300.0 352674 92333647004 MW-4 EPA 300.0 352674 92333647005 MW-5 EPA 300.0 352674 92333647006 MW-6 EPA 300.0 352674 92333647007 MW-7 EPA 300.0 352674 92333647008 MW-8 EPA 300.0 353061 92333647009 MW-9 EPA 300.0 353061 92333647010 MW-10 EPA 300.0 353061 92333647011 MW-11 EPA 300.0 353061 92333647012 MW-12 EPA 300.0 353061 92333647013 MW-13 EPA 300.0 353775 Date: 03/28/2017 04:32 PM REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Analytical Method Analytical Batch Page 49 of 54 Document Name: Document Revised: Sept. 21, 2016 �AceAr�alyticalm Sample Condition Upon Receipt(SCUR) Page 1 of 2 Document No.: Issuing Authority: F-CAR-CS-033-Rev.41 Pace Quality Office Laboratory receiving samples: Asheville ❑ Eden❑ Greenwood ❑ Huntersvillko� Raleigh[] Mechanicsville❑ ConditionSample Receipt p. Client Name-. - Project #: Wp# : 92333647 Courier: ❑Fed Ex ❑E1P5 -CUSPS ❑Client ❑ Commercial ace ❑Other: I + I + 92333647 Custody Seal Present? ❑Yes I:UNo Seals Intact? ❑Yes No Packing Material: ❑Bubble WrapB�ubble Bags ❑None ❑other: Thermometer: IR Gun ID: �1 �D� Type of c et ❑Blue []None5mples on ice, cooling process has begun Correction Factor; Cooler Temp Corrected (°C), Biological Tissue Frozen? Dyes �� o 0/ N A Temp should be above .freezing to 6°C USDA Regulated so cN/A, water sample) Did samples priginate in quarantine zone within the United States: CA, NY, or SC (check maps)? Chain of Custody Present? Samples Arrived within Hold Time? Short Hold Time Analysis (<72 hr.)? Rush Turn Around Time Requested? Sufficient Volume? Correct Cortainers Used? -Pace Containers Used? Containers Intact? Samples Field Filtered? Sample Labels Match COC? -Includes Date/Time/ID/Analysis Matrix: Headspace in VOA Vials (>5.6mm)? Trip Blank Present? Trip Blank Custody Seals Present? CLIENT NOTIFICATION/RESOLUTION Person Contacted: Comments/Sample Discrepancy: '-,Wes ❑No ❑N/A FErYes nNo I71N/A Date/Initials Person Examining Contents: Did samples originate from a foreign source including Hawaii and Puerto Rico)? ❑Yes Comments/Discrepancy: uNo L_]N/A 7. ❑No /A 8. Note if sediment is visible in the dissolved container [!]No [-I N/A 9. UYes 6W6 ❑N/A 1 10. ❑Yes �]�Jo ❑N/A 11. ❑Yes ❑No <-��IA Date/Time: Field Data Required? ❑Yes ❑No Project Manager SCURF Review: Date: 3! 1'7 Project Manager SRF Review: Date: Note: Whenever there is a discrepancy affecting North Carolina compliance samples, a copy of this form will be sent to the North Carolina DEHNR Certification Office (i.e. Out of hold, incorrect preservative, out of temp, incorrect containers) Page 50 of 54 Document Name: Document Revised: Sept. 21, 2016 Sample Condition Upon Receipt(SCUR) Page 2 of 2 _ 2eAnalytica( Document No.: Issuing Authority: F-CAR-CS-033-Rev.01 Pace Quality Office waft A' *Check mark top half of box if pH and/or dechlorination is verified and within the acceptance range for preservation samples. ) **Bottom half of box is to list number of bottles �, N Projec WO# : gzJJJ04 PM: PTE Due Date: 03/27/17 CLIENT: 92—NCOOT v z '6 dl v n fN0 J ul 1H na. m z V N N a 7 f�4 J O N a. m Q z N G/ a N J O V1 a m a -0 N v ° i+ N d e-0 a m v V fl. O N a-. r E lLA ,y a m V fl. p z R Q - N z a m O Z a z N 8. J s= OLo N IV a M u N H. n N C J N 0 a m v = l7 f0� C V LL 3 `Z "6 r A E Q al ri 7 vl C7 a _ V - .Q � Q Y r-I 2 11 C7 a W C O G Q J 0 N 7 M U' a O N .0 E Q Gl �.y V! ai l7 a N _ p. to i Q J O N V1 M 0 a = Z 6 G C1Z. N M O a M C7 a z ..r a p E ? dt (D o>> Q O vN, Q O E F tl1 C7 z a Q 0 , Y O� l7 Q v T p a Q � J C a 01 l7 a>> 4 2_. ;+ Y o ,? p, >; " Y a O z ."' Y a .Y M N 7 m' Y 47 N 4 ,� .� � J N " it a. v, I a z U SA C O N N n, CA O N x 2 � C a N M a m m d 0 W Z H 16 0 G LO o N 7 � v� z 1 i z 3 iy 4 f 5 I� 6 \NN N �4 7 8 f� 10 12 pH Adjustment Log for preserved Samples Sample ID Type of Preservative pH upon receipt Date preservation adjusted Time preservation adjusted Amount of Preservative added Lot # Page 51 of 54 Analytical Document Name: Sample Condition Upon Receil Document No.: F-CAR-CS-033-Rev.01 *Check mark top half of box if pH and/or dechlorination is verified and within the acceptance range for preservation samples. "Bottom half of box is to list number of bottles Project # Document Revised: Sept. 21, 2016 Page 2 of 2 Issuing Authority: D.. n, ;;lity office Wa#:92333647 PM' PTE Due Date: 03/27/17 CLIENT. 92-NCOOT Yl z U CI GJ c Y a J v] rEl a CO z a al Z N c D u a J O LO N5 0. m z Gl Z T C V n J O E a d m ¢ M d U7 Q � cOi R (1 e-I d CO U N `� x 7 N 2 V M LNNN d CO N V x a M O = Y a J Z a ca O W M u a z N emu-, p N a m U z o S O �+ a V Q. M a M � d 1=i 3 Z v z ci `a G m E Q ri 7 •4 l7 a N V a �- U aJ E Q Wo r-1 T i••1 U' a a d ? a1 N a c A a J LO N M l7 a N V s a V p N = W E Q •--1 Y1 ri C7 a V 2 a O N 2 E Q J LA N V1 M U" a a U S z .A E a J E o N _ a M l7 a Q z _r l..l T a O O Ol l7 o = M NN y� M z Q p J E O F O1 C7 > Q z d c a O E O Ch l7 > ¢ Z a d cn O E O C6 C1 V' o \ x M o t a %D Y a > > a+ Y m = ri 7 F+ a N M Y > I = V u d n J kn ti H a I z •� C CJ n Jf o N a In Q7 O u N x Z U a JE Ln N en 0. CO v C _ a 7 - m > c l4 in Jf o N > +� 1 N\N \NN 5 6 7 8 9 \ \\N 10 11 12 pH Adjustment Log for Preserved Samples Sample ID Type of Preservative pH upon receipt Date preservation adjusted Time preservation adjusted Amount of Preservative added Lot # Page 52 of 54 A ro m X) 0 M 1 ns o m co ti a) ue A w ro -+ ITEM # c m n3 c 1 � a az N ry S N 3 m ,n W o V Z o ram-- 30 m c g w!} :4 0p Fn ALnn 0 K o O 3 3 K ❑ m 3 ' M z C N ti F 0 0 a M qq R 6 n 9 •C O C ' A N m O p d 3 O v p m a # O 4 - E- �, • x MATRUC CCOE (see vatic cows to left} j y N , �` r �y{-; Si ; �, ,�j y, .`7 SAMPLE TYPE (G=GRAS C=COMP) W _ _. � m a n n0 o , Z _ S' it b v Ca V` vt r m m o L� D m A % C Z -� -P�Z Z I) O D -ni M W R m S m n m a a n' v a a o N 0 h m m w r Z - v, ,�. ,r l �•� ('� a �,! �� {'. -• ♦S SAMPLE TEMP AT COLLECTION " IL-, m • m d m n 3 in c ^� ;� J V, !r v 1 c+'� BOF CONTAINERS _ — Unpreservetl 3 ro ro o w Y ii H2SO4 m ELv o HNO3 m HCICD ^� '--G- -'� -l- NaDH v n Na2S2O3 N w ,m o Methanol n m Other - r� N Analyses Test Y/N va voC by 6200 y ry 1 p 3 ` Sulfate by 300,0 p m � w a U a D d 21 Nr M 3 a Z C y 3 m w TEMP In C _ m -- Residual Chlorine [YIN) y Z n o wS. a Received on Ice Fti usy Sealee d � Cooler YIN N Jam_ Samples• Intact (YIN[ CID = =r D m 7Z 71 o O c a /C/� N V/ r 0 M 0 Gi r � n n m q Z " D — {v m < CD M C mD 11 N rt :1v �0 n C o 3 m 0. m n C N m r 01,'VJ Al Page 53 of 54 ra o m m .i a ea a w ra � ITEM # � � 3 a o m ,p 3 z N N d» m m� n a V1, 3 a 6 3 a G z n D � m U) c o o a � o�� o 0 D .� o O` Z G O z C T - rl 0 A m M li! ' T 1✓ r o Y 9-1 z m J N CZ 6-4p�Qoverg�v �i q 0 m M 0 o a_ a WkU�� m N n n d -0A c' 0 ~ z Z m O CL 3 Z m m O 0 v Co y MATRIX CODE (See vaild codes to ten) r z z SAMPLE TYPE (G=GRAB C=COMP) \ m rn rn o, m Z 1 y N Y 'U v n C 3 r-J m a W Z t%^ u Irn z z 5 rr- 0 cri o G c� n -+ z ra Y m 0 o0 m ❑ 1 M 3 D i o (1 m 0 Z w b w� N n n z O m -� T v > r y m an m A SAMPLE TEMP AT COLLECTION m o n # OF CONTAINERS o a S l �'l m ?k Unpreserved H2504 tt d o 0 HN0.3 b 3 3 w HCl m e NaOH ~ g t n Na2S203 y ' m Methanol v rn o Other iAnalysis Test Yr N m r y ram' K V t3 L 0 �1 3 o m T A Fi Sul(,A 1( 00,E M N C C M �7 z h a n r n C tin Z 1, m -n L 11 01 m ni 3 co o � � a I > j ti m C) m d A Z z D C7 0 Temp in'C " v Residual Chlorine (YIN) y m an N A ND Ice (YlN) s > r � n i "' OO m � co Custody SealedCoplar C (Y!N) (_. o .• m x U1 A Ln Samples Intact �' a' m (YIN) — A Pag ro' � m � C9 A� CL m T N N 3 CD CD 0 y rt g Q @ 0 m a n n C c — 54 of 54 APPENDIX B GROUNDWATER CONCENTRATION TRENDS IN SELECTED WELLS TOOLKIT for Constituent Trend Analysis Evaluation Date: 117-Apr-17 Job ID: 2014.009.NDOT Facility Name:1 Former Preslar's Exxon Constituent:1 Benzene Conducted By: I Branson Concentration Units: I N /L Sampling PointlD: MW-1 I MW-4 I MW-13 Sampling M' Event Sampling Date R• 1 5/5/15 15.0 503 88.4 2 6/16/15 5.3 733 40.8 3 8/11/15 15.7 960 171 4 11/16/15 4.0 419 15.3 5 3/1/16 1.3 159 46.9 6 10/17/16 0.3 287 17.9 7 3/13/2017 0.3 155 26.6 8 9 10 11 12 13 14 15 16 17 18 19 20 Coefficient of Variation: Mann -Kendall Statistic (S): Confidence Factor: Concentration Trend: No Trend Decreasing Stable 1000 � MW-1 - MW-4 100 -BMW-13 10 C O 1 v c L0.1 12114 04115 07115 10115 OV16 05116 08116 IV16 03117 06117 7 i Sampling Date 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:50, 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., wwwgsi-net.com TOOLKIT for Constituent Trend Analysis Evaluation Date: 117-Apr-17 Job ID: 2014.009.NDOT Facility Name:1 Former Preslar's Exxon Constituent:1 Naphthalene Conducted By: I Branson Concentration Units: N /L Sampling Point ID:J MW-4 I MW-13 Sampling M' Event � • ate • ON 1 5/5/15 33.9 286 2 6/16/15 65.2 91.2 3 8/11/15 125 325 4 11/16/15 118 68.2 5 3/1/16 19.4 61.2 6 10/17/16 20.1 29.9 7 3/13/2017 27.2 17.9 8 9 10 11 12 13 14 15 16 17 18 19 20 Coefficient of Variation: Mann -Kendall Statistic (S): Confidence Factor: Concentration Trend: No Trend Decreasing 1000 ` MW-13 ? 100 0 c 10 O r, c 12114 04115 07115 10115 OV16 05116 08116 IV16 03117 06117 7 L1 i Sampling Date 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:50, 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., wwwgsi-net.com 1000 100 1 0.1 Baseline 6/16/2015 8/11/2015 11/16/2015 3/l/2016 10/18/2016 DATE 3/13/2017 Benzene t Sulfate Benzene NCAC 2L Standard 1000 100 1 0.1 Baseline 6/16/2015 8/11 /2015 11 /16/2015 DATE MW-4 3/1/2016 10/18/2016 3/13/2017 f Benzene f Sulfate Naphthalene Benzene NCAC 2L Standard • Naphthalene NCAC 2L Standard 11111111 100 1 0.1 Baseline 6/16/2015 8/11/2015 11/16/2015 DATE MW-13 3/1/2016 10/18/2016 3/13/2017 Benzene t Sulfate Naphthalene Benzene NCAC 2L Standard • Naphthalene NCAC 2L Standard