April 16, Mr. Stephen Jerrick A. Morton Thomas & Associates, Inc. 800 King Farm Blvd, Fourth Floor Rockville, MD 20850

Transcription

1 April 16, 2018 Mr. Stephen Jerrick A. Morton Thomas & Associates, Inc. 800 King Farm Blvd, Fourth Floor Rockville, MD Re: Quarterly Monitoring Report 1 st Quarter 2018 Groundwater Monitoring North Point Government Center 7701 Wise Avenue Dundalk, Maryland OCP Case No.: BA Apex Job No.: AMORT-009 Dear Mr. Jerrick: Apex Companies, LLC (Apex) has prepared this report for the above-referenced site (subject property) on behalf of the A. Morton Thomas & Associates, Inc. (AMT) to document activities completed during the 1 st Quarter A site location map is included as Figure 1. In February 2016, Oil Control Program (OCP) Case BA was opened following a confirmed release from a supply line associated with an underground storage tank (UST) located at the subject property. Apex completed a site investigation in August 2016 that identified petroleum impacted soil and groundwater in the vicinity of the former UST system, which was removed in February Based on Apex s site assessment, MDE recommended additional work that included the installation of three groundwater monitoring wells; monthly gauging of four wells identified as MW-1, MW-4, MW-5, and MW-6 as well as quarterly sampling of these four wells. The following is a summary of activities completed at the site: Discovery of suspected leak February 2016 UST system removal and Closure Report March 2016 MDE Request for Work Plan May 2016 Work Plan for site assessment activities submitted and approved June/July 2016 Soil and groundwater sampling, storm drain inspection and sampling August 2016 Site Assessment Report September 2016 Stream Inspection and Re-inspection Reports September/October 2016 MDE Request for Work Plan December 2016 Work Plan for additional site assessment activities submitted and approved January/February 2017 Completion of monitoring well installations and storm drain cleaning March 2017 Commence monthly gauging and quarterly sampling April 2017 Additional Site Assessment Report May 2017 Abandonment of MW-5 February 2018 Apex Companies, LLC Crabbs Branch Way, Suite 200 Rockville, MD T F apexcos.com

2 Mr. Steve Jerrick, A. Morton Thomas & Associates, Inc. April 16, st QMR 2018 North Point Government Center - OCP Case BA Page 2 MONITORING WELL GAUGING During January, February, and March 2018, Apex completed monthly gauging of the four monitoring wells identified as MW-1, MW-4, MW-5, and MW-6. MW-5 was not gauged In February and March 2018 due damage sustained by the well, which is discussed below. Monitoring well locations are provided on Figure 2. Results of the monthly gauging completed during the 1 st Quarter 2017 are provided in Table 1. Measurable Light Non-Aqueous Phase Liquids (LNAPL) or free product was not detected in the four on-site wells gauged as part of the monthly monitoring, with the exception of MW-5 in January TABLE 1 Monthly Well Gauging Summary North Point Government Center 7701 Wise Avenue Dundalk, Maryland Well MW-1 MW-4 MW-5 MW-6 Date 1/10/2018 TOC Elevation (feet) Depth to Product from TOC (feet) Depth to Water from TOC (feet) Product Thickness (feet) Groundwater Elevation (feet) Corrected Groundwater Elevation (feet) /14/ /29/ /10/ /14/ /29/ /10/ /14/ NG /29/ NG /10/ /14/ /29/ During the February 2018 well gauging, Apex observed undermining of the soils around MW-5 that had created a void underneath the asphalt. As a result of the shift in soils, the well construction of MW-5 had become compromised and the associated PVC piping was broken at approximately five feet below ground surface (bgs). Apex pulled the manhole lid of the Stormwater structure located approximately 10 feet away from MW-5. Apex observed soil, stone, and pieces of asphalt at the bottom of the Stormwater structure which is located approximately 7.5 feet bgs. The debris appeared to have originated from a Stormwater line running northwest towards the building and underneath the former piping run. On March 5, 2018, Apex mobilized to the site to expose and assess the damage to the Stormwater line and make repairs to MW-5. Apex excavated to approximately 6.5 feet to expose the Stormwater line and observed an approximately 3-foot section of the line was damaged. The Stormwater line was damaged during drilling and installation of MW-5. Given the location of MW- 5, the monitoring well was abandoned to allow for repairs to the Stormwater line to be completed. AMT-NorthPoint-1stQMR2018_rpt;(AMORT-009);trp/ttn

3 Mr. Steve Jerrick, A. Morton Thomas & Associates, Inc. April 16, st QMR 2018 North Point Government Center - OCP Case BA Page 3 Apex contracted with a Maryland licensed well drill to properly abandon the monitoring well. The well was abandoned by pulling the 4-inch PVC piping from the ground and backfilling the void with bentonite. The monitoring well abandonment report is provided in Attachment 1. On March 8, 2018, Apex met on site with representatives from Baltimore County and MDE to discuss the replacement of MW-5. Representatives on site discussed multiple locations for the replacement well within the former piping run and within areas were LNAPL was previously observed in temporary wells. MDE recommended the replacement well be installed within close proximity of the former MW-5 location. However, Apex notes that this location was outside of the former piping run, but within a few feet of MW-5. At MDE s recommendation, all parties agreed on the replacement well location. Prior to preparation of this report, the replacement well has not been installed, but is anticipated to be installed prior to the end of April. MONITORING WELL SAMPLING On March 29, 2018, Apex mobilized to the site to sample the on-site monitoring wells (MW-1, MW-4, and MW-6). MW-5 was abandoned on March 5, 2018 and a replacement well will be installed at a later date. Prior to sampling, the monitoring wells were gauged with an oil/water interface probe. Measurable LNAPL was not detected in the three monitoring wells during the 1 st Quarter 2018 sampling event. The monitoring well locations are depicted on Figure 2. Relative groundwater elevations were calculated by subtracting the depth-to-water reading from the top of casing elevation in each monitoring well. The recorded depth-to-water levels are presented in Table 1. A summary of groundwater elevations to date is provided in Table 2. An approximated groundwater contour map was constructed and is presented as Figure 3. Based on the relative groundwater elevations, groundwater flow is anticipated to be in a south-southeast direction. The groundwater samples were collected from each monitoring well using low-flow purging and sampling procedures. A bladder pump and dedicated disposable polyethylene (PE) tubing were used to purge the wells. Once groundwater parameters stabilized (+/- 10%), the groundwater samples were collected. The samples were retained in laboratory prepared glassware, labeled, and placed in a cooler with ice for preservation. Samples were then delivered to SGS Accutest Laboratories for analysis following proper chain-of-custody procedures. The samples were analyzed for volatile organic compounds (VOCs) including fuel oxygenates and naphthalene using U.S. Environmental Protection Agency (EPA) Method 8260; and total petroleum hydrocarbons for diesel range organics (TPH-DRO) using EPA Method 8015C. Apex compared the groundwater sample analytical results to the Maryland Generic Numeric Cleanup Standards for Groundwater (Groundwater Cleanup Standards) published in the MDE Interim Final Guidance dated June The laboratory analytical results are summarized on Table 3 and the laboratory data sheets are included in Attachment 2. Based on the results of the 1 st Quarter 2018 sampling, concentrations of TPH-DRO and VOCs were not detected at concentrations that exceeded the Groundwater Cleanup Standards. AMT-NorthPoint-1stQMR2018_rpt;(AMORT-009);trp/ttn

4 Mr. Steve Jerrick, A. Morton Thomas & Associates, Inc. April 16, st QMR 2018 North Point Government Center - OCP Case BA Page 4 SUMMARY AND ACTIVITIES TO BE COMPLETED IN THE 2 nd Quarter 2018 During the 1 st Quarter 2018, Apex gauged the four monitoring wells (MW-1, MW-4, MW-5, and MW- 6) on a monthly basis. Measurable LNAPL was observed in MW-5 at a thickness of 0.75 feet on January 10, MW-5 was not gauged in February and March due to damage sustained to the monitoring well. Measurable LNAPL was not detected in the remaining three monitoring wells during the 1 st Quarter Based on the results of the 1 st Quarter 2018 sampling, concentrations of TPH-DRO and VOCs were not detected at concentrations that exceeded the Groundwater Cleanup Standards. Apex notes that MW-5 was abandoned on March 5, Activities planned for the 2 nd Quarter 2018 include installation of a replacement monitoring well for MW-5, continued monthly gauging and quarterly sampling of the four monitoring wells during June of In addition, if LNAPL is observed in any of the onsite monitoring well, the LNAPL will be bailed from the monitoring well and stored in a 55-gallon steel drum for later disposal. Apex appreciates the opportunity to provide these services. Should you have any questions or require additional information, please contact us at (301) Sincerely, Apex Companies, LLC Todd R. Passmore Project Manager Maryland Division AMT-NorthPoint-1stQMR2018_rpt;(AMORT-009);trp/ttn

5 TABLES and FIGURES

6 Table 2 - Groundwater Gauging Results North Point Government Center 7701 Wise Avenue, Dundalk, Maryland Well Date TOC Elevation (feet) Depth to Product from TOC (feet) Depth to Water from TOC (feet) Product Thickness (feet) Groundwater Elevation (feet) 4/3/ /17/ /14/ /12/ /9/ /13/ MW /10/ /8/ /13/ /10/ /14/ /29/ /3/ /17/ /14/ /12/ /9/ /13/ MW /10/ /8/ /13/ /10/ /14/ /29/ /3/ /17/ /14/ /12/ /9/ MW /13/ /10/ /8/ /13/ /10/

7 Well Date TOC Elevation (feet) Depth to Product from TOC (feet) Depth to Water from TOC (feet) Product Thickness (feet) Groundwater Elevation (feet) 4/3/ /17/ /14/ /12/ /9/ /13/ MW /10/ /8/ /13/ /10/ /14/ /29/ Notes: TOC = Top of Casing -- = product not detected 2

8 Apex Companies, LLC Project Number: AMORT-009 Table 3 - Groundwater Results Legend: Hit Exceed Client Sample ID: MD Cleanup Standards - Groundwater MW1 MW4 Lab Sample ID: Type I and II JC JC JC JC JC JC JC Date Sampled: Aquifers (MDE 6/14/2017 9/13/ /13/2017 3/29/2018 4/3/2017 6/14/2017 9/13/ /13/2017 3/29/2018 Matrix: 6/2008) Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater GC/MS Volatiles (SW C) Acetone µg/l 550 ND (5.0) ND (5.0) ND (5.0) ND (5.0) ND (5.0) ND (5.0) ND (5.0) ND (5.0) ND (5.0) Benzene µg/l 5 ND (0.17) ND (0.17) ND (0.17) ND (0.17) ND (0.14) ND (0.17) ND (0.17) ND (0.17) ND (0.17) Bromobenzene µg/l - ND (0.25) ND (0.25) ND (0.25) ND (0.25) ND (0.22) ND (0.25) ND (0.25) ND (0.25) ND (0.25) Bromochloromethane µg/l - ND (0.38) ND (0.38) ND (0.38) ND (0.38) ND (0.46) ND (0.38) ND (0.38) ND (0.38) ND (0.38) Bromodichloromethane µg/l 80 ND (0.22) ND (0.22) ND (0.22) ND (0.22) ND (0.55) ND (0.22) ND (0.22) ND (0.22) ND (0.22) Bromoform µg/l 80 ND (0.42) ND (0.42) ND (0.42) ND (0.42) ND (0.34) ND (0.42) ND (0.42) ND (0.42) ND (0.42) Bromomethane µg/l 0.85 ND (1.4) ND (1.4) ND (1.4) ND (1.4) ND (0.46) ND (1.4) ND (1.4) ND (1.4) ND (1.4) 2-Butanone (MEK) µg/l 700 ND (4.8) ND (4.8) ND (4.8) ND (4.8) ND (1.9) ND (4.8) ND (4.8) ND (4.8) ND (4.8) n-butylbenzene µg/l - ND (0.27) ND (0.27) ND (0.27) ND (0.27) ND (0.28) ND (0.27) ND (0.27) ND (0.27) ND (0.27) sec-butylbenzene µg/l - ND (0.27) ND (0.27) ND (0.27) ND (0.27) ND (1.0) ND (0.27) ND (0.27) ND (0.27) ND (0.27) tert-butylbenzene µg/l - ND (0.34) ND (0.34) ND (0.34) ND (0.34) ND (0.28) ND (0.34) ND (0.34) ND (0.34) ND (0.34) Carbon tetrachloride µg/l 5 ND (0.34) ND (0.34) ND (0.34) ND (0.34) ND (0.54) ND (0.34) ND (0.34) ND (0.34) ND (0.34) Chlorobenzene µg/l 100 ND (0.24) ND (0.24) ND (0.24) ND (0.24) ND (0.17) ND (0.24) ND (0.24) ND (0.24) ND (0.24) Chloroethane µg/l 3.6 ND (0.59) ND (0.59) ND (0.59) ND (0.59) ND (0.44) ND (0.59) ND (0.59) ND (0.59) ND (0.59) Chloroform µg/l Chloromethane µg/l 19 ND (0.53) ND (0.53) ND (0.53) ND (0.53) ND (0.96) ND (0.53) ND (0.53) ND (0.53) ND (0.53) o-chlorotoluene µg/l - ND (0.30) ND (0.30) ND (0.30) ND (0.30) ND (0.18) ND (0.30) ND (0.30) ND (0.30) ND (0.30) p-chlorotoluene µg/l - ND (0.24) ND (0.24) ND (0.24) ND (0.24) ND (0.29) ND (0.24) ND (0.24) ND (0.24) ND (0.24) Di-Isopropyl ether µg/l - ND (0.20) ND (0.20) ND (0.20) ND (0.20) ND (0.41) ND (0.20) ND (0.20) ND (0.20) ND (0.20) 1,2-Dibromo-3-chloropropane µg/l 0.2 ND (0.69) ND (0.69) ND (0.69) ND (0.69) ND (0.69) ND (0.69) ND (0.69) ND (0.69) ND (0.69) Dibromochloromethane µg/l 80 ND (0.16) ND (0.16) ND (0.16) ND (0.16) ND (0.23) ND (0.16) ND (0.16) ND (0.16) ND (0.16) 1,2-Dibromoethane µg/l 0.05 ND (0.21) ND (0.21) ND (0.21) ND (0.21) ND (0.22) ND (0.21) ND (0.21) ND (0.21) ND (0.21) 1,2-Dichlorobenzene µg/l 600 ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.23) ND (0.50) ND (0.50) ND (0.50) ND (0.50) 1,3-Dichlorobenzene µg/l 1.8 ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.19) ND (0.50) ND (0.50) ND (0.50) ND (0.50) 1,4-Dichlorobenzene µg/l 75 ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.21) ND (0.50) ND (0.50) ND (0.50) ND (0.50) Dichlorodifluoromethane µg/l - ND (1.9) ND (1.9) ND (1.9) ND (1.9) ND (0.70) ND (1.9) ND (1.9) ND (1.9) ND (1.9) 1,1-Dichloroethane µg/l 90 ND (0.21) ND (0.21) ND (0.21) ND (0.21) ND (0.21) ND (0.21) ND (0.21) ND (0.21) ND (0.21) 1,2-Dichloroethane µg/l 5 ND (0.20) ND (0.20) ND (0.20) ND (0.20) ND (0.39) ND (0.20) ND (0.20) ND (0.20) ND (0.20) 1,1-Dichloroethene µg/l 7 ND (0.47) ND (0.47) ND (0.47) ND (0.47) ND (0.20) ND (0.47) ND (0.47) ND (0.47) ND (0.47) cis-1,2-dichloroethene µg/l 70 ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.31) ND (0.50) ND (0.50) ND (0.50) ND (0.50) trans-1,2-dichloroethene µg/l 100 ND (0.40) ND (0.40) ND (0.40) ND (0.40) ND (0.36) ND (0.40) ND (0.40) ND (0.40) ND (0.40) 1,2-Dichloropropane µg/l 5 ND (0.24) ND (0.24) ND (0.24) ND (0.24) ND (0.33) ND (0.24) ND (0.24) ND (0.24) ND (0.24) 1,3-Dichloropropane µg/l - ND (0.28) ND (0.28) ND (0.28) ND (0.28) ND (0.28) ND (0.28) ND (0.28) ND (0.28) ND (0.28) 2,2-Dichloropropane µg/l - ND (0.30) ND (0.30) ND (0.30) ND (0.30) ND (0.42) ND (0.30) ND (0.30) ND (0.30) ND (0.30) 1,1-Dichloropropene µg/l - ND (0.29) ND (0.29) ND (0.29) ND (0.29) ND (0.20) ND (0.29) ND (0.29) ND (0.29) ND (0.29) cis-1,3-dichloropropene µg/l 0.44 ND (0.25) ND (0.25) ND (0.25) ND (0.25) ND (0.19) ND (0.25) ND (0.25) ND (0.25) ND (0.25) 1

9 Client Sample ID: MD Cleanup Standards - Groundwater MW1 MW4 Lab Sample ID: Type I and II JC JC JC JC JC JC JC Date Sampled: Aquifers (MDE 6/14/2017 9/13/ /13/2017 3/29/2018 4/3/2017 6/14/2017 9/13/ /13/2017 3/29/2018 Matrix: 6/2008) Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater GC/MS Volatiles (SW C) trans-1,3-dichloropropene µg/l 0.44 ND (0.22) ND (0.22) ND (0.22) ND (0.22) ND (0.26) ND (0.22) ND (0.22) ND (0.22) ND (0.22) Ethylbenzene µg/l 700 ND (0.22) ND (0.22) ND (0.22) ND (0.22) ND (0.20) ND (0.22) ND (0.22) ND (0.22) ND (0.22) Hexachlorobutadiene µg/l 0.86 ND (0.34) ND (0.34) ND (0.34) ND (0.34) ND (0.22) ND (0.34) ND (0.34) ND (0.34) ND (0.34) Isopropylbenzene µg/l 66 ND (0.25) ND (0.25) ND (0.25) ND (0.25) ND (0.16) ND (0.25) ND (0.25) ND (0.25) ND (0.25) p-isopropyltoluene µg/l - ND (0.24) ND (0.24) ND (0.24) ND (0.24) ND (1.0) ND (0.24) ND (0.24) ND (0.24) ND (0.24) Methyl Tert Butyl Ether µg/l 20 ND (0.25) ND (0.25) ND (0.25) ND (0.25) ND (0.34) ND (0.25) ND (0.25) ND (0.25) ND (0.25) 4-Methyl-2-pentanone(MIBK) µg/l 630 ND (3.0) ND (3.0) ND (3.0) ND (3.0) ND (1.2) ND (3.0) ND (3.0) ND (3.0) ND (3.0) Methylene bromide µg/l - ND (0.45) ND (0.45) ND (0.45) ND (0.45) ND (0.28) ND (0.45) ND (0.45) ND (0.45) ND (0.45) Methylene chloride µg/l 5 ND (1.0) ND (1.0) ND (1.0) ND (1.0) ND (1.0) ND (1.0) ND (1.0) ND (1.0) ND (1.0) Naphthalene µg/l 0.65 ND (1.1) ND (1.1) ND (1.1) ND (1.1) ND (1.0) ND (1.1) ND (1.1) ND (1.1) ND (1.1) n-propylbenzene µg/l - ND (0.24) ND (0.24) ND (0.24) ND (0.24) ND (0.17) ND (0.24) ND (0.24) ND (0.24) ND (0.24) Styrene µg/l 100 ND (0.24) ND (0.24) ND (0.24) ND (0.24) ND (0.27) ND (0.24) ND (0.24) ND (0.24) ND (0.24) Tert Butyl Alcohol µg/l - ND (7.0) ND (7.0) ND (7.0) ND (7.0) ND (3.0) ND (7.0) ND (7.0) ND (7.0) ND (7.0) tert-amyl Methyl Ether µg/l - ND (0.37) ND (0.37) ND (0.37) ND (0.37) ND (0.23) ND (0.37) ND (0.37) ND (0.37) ND (0.37) tert-butyl Ethyl Ether µg/l - ND (0.20) ND (0.20) ND (0.20) ND (0.20) ND (0.23) ND (0.20) ND (0.20) ND (0.20) ND (0.20) 1,1,1,2-Tetrachloroethane µg/l - ND (0.19) ND (0.19) ND (0.19) ND (0.19) ND (0.17) ND (0.19) ND (0.19) ND (0.19) ND (0.19) 1,1,2,2-Tetrachloroethane µg/l ND (0.17) ND (0.17) ND (0.17) ND (0.17) ND (0.39) ND (0.17) ND (0.17) ND (0.17) ND (0.17) Tetrachloroethene µg/l 5 ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.23) ND (0.50) ND (0.50) ND (0.50) ND (0.50) Toluene µg/l 1000 ND (0.25) ND (0.25) ND (0.25) ND (0.25) ND (0.23) ND (0.25) ND (0.25) ND (0.25) ND (0.25) 1,2,3-Trichlorobenzene µg/l - ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) 1,2,4-Trichlorobenzene µg/l 70 ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) 1,1,1-Trichloroethane µg/l 200 ND (0.25) ND (0.25) ND (0.25) ND (0.25) ND (0.22) ND (0.25) ND (0.25) ND (0.25) ND (0.25) 1,1,2-Trichloroethane µg/l 5 ND (0.24) ND (0.24) ND (0.24) ND (0.24) ND (0.28) ND (0.24) ND (0.24) ND (0.24) ND (0.24) Trichloroethene µg/l 5 ND (0.27) ND (0.27) ND (0.27) ND (0.27) ND (0.26) ND (0.27) ND (0.27) ND (0.27) ND (0.27) Trichlorofluoromethane µg/l - ND (0.60) ND (0.60) ND (0.60) ND (0.60) ND (0.58) ND (0.60) ND (0.60) ND (0.60) ND (0.60) 1,2,3-Trichloropropane µg/l - ND (0.47) ND (0.47) ND (0.47) ND (0.47) ND (0.75) ND (0.47) ND (0.47) ND (0.47) ND (0.47) 1,2,4-Trimethylbenzene µg/l - ND (0.24) ND (0.24) ND (0.24) ND (0.24) ND (0.26) ND (0.24) ND (0.24) ND (0.24) ND (0.24) 1,3,5-Trimethylbenzene µg/l - ND (0.20) ND (0.20) ND (0.20) ND (0.20) ND (0.32) ND (0.20) ND (0.20) ND (0.20) ND (0.20) Vinyl chloride µg/l 2 ND (0.62) ND (0.62) ND (0.62) ND (0.62) ND (0.33) ND (0.62) ND (0.62) ND (0.62) ND (0.62) m,p-xylene µg/l ND (0.43) ND (0.43) ND (0.43) ND (0.43) ND (0.42) ND (0.43) ND (0.43) ND (0.43) ND (0.43) o-xylene µg/l ND (0.22) ND (0.22) ND (0.22) ND (0.22) ND (0.21) ND (0.22) ND (0.22) ND (0.22) ND (0.22) Xylene (total) µg/l ND (0.22) ND (0.22) ND (0.22) ND (0.22) ND (0.21) ND (0.22) ND (0.22) ND (0.22) ND (0.22) GC Semi-volatiles (SW C) TPH-DRO (C10-C28) mg/l ND (0.083) ND (0.083) ND (0.083) ND (0.064) ND (0.064) ND (0.083) ND (0.083) ND (0.083) Regulatory limits listed in this document have been obtained from the latest version of the regulations cited and are used for advisory purposes only. SGS Accutest assumes no responsibility for errors in regulatory documents or changes to criteria detailed in later versions of the referenced regulation. It is the responsibility of the user to verify these limits before using or reporting any data. NS- Not Sampled 2

10 Apex Companies, LLC Project Number: AMORT-009 Table 3 - Groundwater Results (cont'd.) Legend: Hit Exceed Client Sample ID: MD Cleanup Standards - Groundwater MW5 MW6 Lab Sample ID: Type I and II JC JC JC JC JC JC JC Date Sampled: Aquifers (MDE 4/3/2017 6/14/2017 9/13/2017 4/3/2017 6/13/2017 9/13/ /13/2017 3/29/2018 Matrix: 6/2008) Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Ground Water GC/MS Volatiles (SW C) Acetone µg/l 550 ND (5.0) ND (5.0) 5.0 J ND (5.0) ND (5.0) ND (5.0) ND (5.0) ND (5.0) Benzene µg/l 5 ND (0.14) ND (0.17) ND (0.17) ND (0.14) ND (0.17) ND (0.17) ND (0.17) ND (0.17) Bromobenzene µg/l - ND (0.22) ND (0.25) ND (0.25) ND (0.22) ND (0.25) ND (0.25) ND (0.25) ND (0.25) Bromochloromethane µg/l - ND (0.46) ND (0.38) ND (0.38) ND (0.46) ND (0.38) ND (0.38) ND (0.38) ND (0.38) Bromodichloromethane µg/l 80 ND (0.55) ND (0.22) ND (0.22) ND (0.55) ND (0.22) ND (0.22) ND (0.22) ND (0.22) Bromoform µg/l 80 ND (0.34) ND (0.42) ND (0.42) ND (0.34) ND (0.42) ND (0.42) ND (0.42) ND (0.42) Bromomethane µg/l 0.85 ND (0.46) ND (1.4) ND (1.4) ND (0.46) ND (1.4) ND (1.4) ND (1.4) ND (1.4) 2-Butanone (MEK) µg/l 700 ND (1.9) ND (4.8) ND (4.8) ND (1.9) ND (4.8) ND (4.8) ND (4.8) ND (4.8) n-butylbenzene µg/l - ND (0.28) ND (0.27) 0.68 J ND (0.28) ND (0.27) ND (0.27) ND (0.27) ND (0.27) sec-butylbenzene µg/l - ND (1.0) 0.27 J 0.46 J ND (1.0) ND (0.27) ND (0.27) ND (0.27) ND (0.27) tert-butylbenzene µg/l - ND (0.28) ND (0.34) ND (0.34) ND (0.28) ND (0.34) ND (0.34) ND (0.34) ND (0.34) Carbon tetrachloride µg/l 5 ND (0.54) ND (0.34) ND (0.34) ND (0.54) ND (0.34) ND (0.34) ND (0.34) ND (0.34) Chlorobenzene µg/l 100 ND (0.17) ND (0.24) ND (0.24) ND (0.17) ND (0.24) ND (0.24) ND (0.24) ND (0.24) Chloroethane µg/l 3.6 ND (0.44) ND (0.59) ND (0.59) ND (0.44) ND (0.59) ND (0.59) ND (0.59) ND (0.59) Chloroform µg/l ND (0.29) Chloromethane µg/l 19 ND (0.96) ND (0.53) ND (0.53) ND (0.96) ND (0.53) ND (0.53) ND (0.53) ND (0.53) o-chlorotoluene µg/l - ND (0.18) ND (0.30) ND (0.30) ND (0.18) ND (0.30) ND (0.30) ND (0.30) ND (0.30) p-chlorotoluene µg/l - ND (0.29) ND (0.24) ND (0.24) ND (0.29) ND (0.24) ND (0.24) ND (0.24) ND (0.24) Di-Isopropyl ether µg/l - ND (0.41) ND (0.20) ND (0.20) ND (0.41) ND (0.20) ND (0.20) ND (0.20) ND (0.20) 1,2-Dibromo-3-chloropropane µg/l 0.2 ND (0.69) ND (0.69) ND (0.69) ND (0.69) ND (0.69) ND (0.69) ND (0.69) ND (0.69) Dibromochloromethane µg/l 80 ND (0.23) ND (0.16) ND (0.16) ND (0.23) ND (0.16) ND (0.16) ND (0.16) ND (0.16) 1,2-Dibromoethane µg/l 0.05 ND (0.22) ND (0.21) ND (0.21) ND (0.22) ND (0.21) ND (0.21) ND (0.21) ND (0.21) 1,2-Dichlorobenzene µg/l 600 ND (0.23) ND (0.50) ND (0.50) ND (0.23) ND (0.50) ND (0.50) ND (0.50) ND (0.50) 1,3-Dichlorobenzene µg/l 1.8 ND (0.19) ND (0.50) ND (0.50) ND (0.19) ND (0.50) ND (0.50) ND (0.50) ND (0.50) 1,4-Dichlorobenzene µg/l 75 ND (0.21) ND (0.50) ND (0.50) ND (0.21) ND (0.50) ND (0.50) ND (0.50) ND (0.50) Dichlorodifluoromethane µg/l - ND (0.70) ND (1.9) ND (1.9) ND (0.70) ND (1.9) ND (1.9) ND (1.9) ND (1.9) 1,1-Dichloroethane µg/l 90 ND (0.21) ND (0.21) ND (0.21) ND (0.21) ND (0.21) ND (0.21) ND (0.21) ND (0.21) 1,2-Dichloroethane µg/l 5 ND (0.39) ND (0.20) ND (0.20) ND (0.39) ND (0.20) ND (0.20) ND (0.20) ND (0.20) 1,1-Dichloroethene µg/l 7 ND (0.20) ND (0.47) ND (0.47) ND (0.20) ND (0.47) ND (0.47) ND (0.47) ND (0.47) cis-1,2-dichloroethene µg/l 70 ND (0.31) ND (0.50) ND (0.50) ND (0.31) ND (0.50) ND (0.50) ND (0.50) ND (0.50) trans-1,2-dichloroethene µg/l 100 ND (0.36) ND (0.40) ND (0.40) ND (0.36) ND (0.40) ND (0.40) ND (0.40) ND (0.40) 1,2-Dichloropropane µg/l 5 ND (0.33) ND (0.24) ND (0.24) ND (0.33) ND (0.24) ND (0.24) ND (0.24) ND (0.24) 1,3-Dichloropropane µg/l - ND (0.28) ND (0.28) ND (0.28) ND (0.28) ND (0.28) ND (0.28) ND (0.28) ND (0.28) 2,2-Dichloropropane µg/l - ND (0.42) ND (0.30) ND (0.30) ND (0.42) ND (0.30) ND (0.30) ND (0.30) ND (0.30) 1,1-Dichloropropene µg/l - ND (0.20) ND (0.29) ND (0.29) ND (0.20) ND (0.29) ND (0.29) ND (0.29) ND (0.29) cis-1,3-dichloropropene µg/l 0.44 ND (0.19) ND (0.25) ND (0.25) ND (0.19) ND (0.25) ND (0.25) ND (0.25) ND (0.25) 3

11 Client Sample ID: MD Cleanup Standards - Groundwater MW5 MW6 Lab Sample ID: Type I and II JC JC JC JC JC JC JC Date Sampled: Aquifers (MDE 4/3/2017 6/14/2017 9/13/2017 4/3/2017 6/13/2017 9/13/ /13/2017 3/29/2018 Matrix: 6/2008) Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Ground Water GC/MS Volatiles (SW C) trans-1,3-dichloropropene µg/l 0.44 ND (0.26) ND (0.22) ND (0.22) ND (0.26) ND (0.22) ND (0.22) ND (0.22) ND (0.22) Ethylbenzene µg/l J 0.35 J ND (0.20) ND (0.20) ND (0.22) ND (0.22) ND (0.22) ND (0.22) Hexachlorobutadiene µg/l 0.86 ND (0.22) ND (0.34) ND (0.22) ND (0.22) ND (0.34) ND (0.34) ND (0.34) ND (0.34) Isopropylbenzene µg/l J 0.27 J ND (0.16) ND (0.16) ND (0.25) ND (0.25) ND (0.25) ND (0.25) p-isopropyltoluene µg/l J 0.63 J 0.41 J ND (1.0) ND (0.24) ND (0.24) ND (0.24) ND (0.24) Methyl Tert Butyl Ether µg/l 20 ND (0.34) ND (0.25) ND (0.25) ND (0.34) ND (0.25) ND (0.25) ND (0.25) ND (0.25) 4-Methyl-2-pentanone(MIBK) µg/l 630 ND (1.2) ND (3.0) ND (3.0) ND (1.2) ND (3.0) ND (3.0) ND (3.0) ND (3.0) Methylene bromide µg/l - ND (0.28) ND (0.45) ND (0.45) ND (0.28) ND (0.45) ND (0.45) ND (0.45) ND (0.45) Methylene chloride µg/l 5 ND (1.0) ND (1.0) ND (1.0) ND (1.0) ND (1.0) ND (1.0) ND (1.0) ND (1.0) Naphthalene µg/l J 1.3 J ND (1.0) ND (1.0) ND (1.1) ND (1.1) ND (1.1) ND (1.1) n-propylbenzene µg/l J 0.42 J ND (0.17) ND (0.17) ND (0.24) ND (0.24) ND (0.24) ND (0.24) Styrene µg/l 100 ND (0.27) ND (0.24) ND (0.24) ND (0.27) ND (0.24) ND (0.24) ND (0.24) ND (0.24) Tert Butyl Alcohol µg/l - ND (3.0) ND (7.0) ND (7.0) ND (3.0) ND (7.0) ND (7.0) ND (7.0) ND (7.0) tert-amyl Methyl Ether µg/l - ND (0.23) ND (0.37) ND (0.37) ND (0.23) ND (0.37) ND (0.37) ND (0.37) ND (0.37) tert-butyl Ethyl Ether µg/l - ND (0.23) ND (0.20) ND (0.20) ND (0.23) ND (0.20) ND (0.20) ND (0.20) ND (0.20) 1,1,1,2-Tetrachloroethane µg/l - ND (0.17) ND (0.19) ND (0.19) ND (0.17) ND (0.19) ND (0.19) ND (0.19) ND (0.19) 1,1,2,2-Tetrachloroethane µg/l ND (0.39) ND (0.17) ND (0.17) ND (0.39) ND (0.17) ND (0.17) ND (0.17) ND (0.17) Tetrachloroethene µg/l 5 ND (0.23) ND (0.50) ND (0.50) ND (0.23) ND (0.50) ND (0.50) ND (0.50) ND (0.50) Toluene µg/l 1000 ND (0.23) ND (0.25) ND (0.25) ND (0.23) ND (0.25) ND (0.25) ND (0.25) ND (0.25) 1,2,3-Trichlorobenzene µg/l - ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) 1,2,4-Trichlorobenzene µg/l 70 ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) ND (0.50) 1,1,1-Trichloroethane µg/l 200 ND (0.22) ND (0.25) ND (0.25) ND (0.22) ND (0.25) ND (0.25) ND (0.25) ND (0.25) 1,1,2-Trichloroethane µg/l 5 ND (0.28) ND (0.24) ND (0.24) ND (0.28) ND (0.24) ND (0.24) ND (0.24) ND (0.24) Trichloroethene µg/l 5 ND (0.26) ND (0.27) ND (0.27) ND (0.26) ND (0.27) ND (0.27) ND (0.27) ND (0.27) Trichlorofluoromethane µg/l - ND (0.58) ND (0.60) ND (0.60) ND (0.58) ND (0.60) ND (0.60) ND (0.60) ND (0.60) 1,2,3-Trichloropropane µg/l - ND (0.75) ND (0.47) ND (0.47) ND (0.75) ND (0.47) ND (0.47) ND (0.47) ND (0.47) 1,2,4-Trimethylbenzene µg/l J ND (0.26) ND (0.24) ND (0.24) ND (0.24) ND (0.24) 1,3,5-Trimethylbenzene µg/l J ND (0.32) ND (0.20) ND (0.20) ND (0.20) ND (0.20) Vinyl chloride µg/l 2 ND (0.33) ND (0.62) ND (0.62) ND (0.33) ND (0.62) ND (0.62) ND (0.62) ND (0.62) m,p-xylene µg/l ND (0.43) ND (0.42) ND (0.43) ND (0.43) ND (0.43) ND (0.43) o-xylene µg/l ND (0.22) ND (0.21) ND (0.22) ND (0.22) ND (0.22) ND (0.22) Xylene (total) µg/l ND (0.22) ND (0.21) ND (0.22) ND (0.22) ND (0.22) ND (0.22) GC Semi-volatiles (SW C) TPH-DRO (C10-C28) mg/l ND (0.083) ND (0.083) ND (0.083) Regulatory limits listed in this document have been obtained from the latest version of the regulations cited and are used for advisory purposes only. SGS Accutest assumes no responsibility for errors in regulatory documents or changes to criteria detailed in later versions of the referenced regulation. It is the responsibility of the user to verify these limits before using or reporting any data. NS- Not Sampled 4

12 Figure 1 Site Location North Point Government Center 7701 Wise Avenue Dundalk, Maryland Subject Property Crabbs Branch Way Suite 200 Rockville, MD Telephone: (301) Legend Quarterly Monitoring Report Client: A. Morton Thomas Project No.: AMORT-009

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15 ATTACHMENT 1 Monitoring Well Abandonment Report

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20 ATTACHMENT 2 Laboratory Analytical Data

21 04/13/18 Dayton, NJ 04/13/18 The results set forth herein are provided by SGS North America Inc. e-hardcopy 2.0 Automated Report Technical Report for Apex Companies, LLC AMORT-009 SGS Job Number: Sampling Date: 03/29/18 Report to: Apex Companies, LLC Crabbs Branch Way Rockville, MD ATTN: Todd Passmore Total number of pages in report: 38 Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Program and/or state specific certification programs as applicable. Nancy Cole Laboratory Director Client Service contact: Kristin Degraw Certifications: NJ(12129), NY(10983), CA, CT, FL, IL, IN, KS, KY, LA, MA, MD, ME, MN, NC, OH VAP (CL0056), AK (UST-103), AZ (AZ0786), PA, RI, SC, TX, UT, VA, WV, DoD ELAP (ANAB L2248) This report shall not be reproduced, except in its entirety, without the written approval of SGS. Test results relate only to samples analyzed. SGS is the sole authority for authorizing edits or modifications to this document. Unauthorized modification of this report is strictly prohibited. Review standard terms at: SGS North America Inc Route 130 Dayton, NJ tel: fax: Please share your ideas about how we can serve you better at: 1 of 38

22 Table of Contents Section 1: Sample Summary... 3 Section 2: Summary of Hits... 4 Section 3: Sample Results : -1: MW : -2: MW : -3: MW Section 4: Misc. Forms : Chain of Custody Section 5: MS Volatiles - QC Data Summaries : Method Blank Summary : Blank Spike Summary : Matrix Spike/Matrix Spike Duplicate Summary : Instrument Performance Checks (BFB) : Surrogate Recovery Summaries Section 6: GC/LC Semi-volatiles - QC Data Summaries : Method Blank Summary : Blank Spike Summary : Matrix Spike/Matrix Spike Duplicate Summary : Surrogate Recovery Summaries Sections: of 38

23 1 SGS North America Inc. Apex Companies, LLC Sample Summary Project No: AMORT-009 Job No: Sample Collected Matrix Client Number Date Time By Received Code Type Sample ID -1 03/29/18 07:50 TP 03/30/18 AQ Ground Water MW /29/18 08:50 TP 03/30/18 AQ Ground Water MW /29/18 08:20 TP 03/30/18 AQ Ground Water MW-6 3 of 38

24 Summary of Hits Page 1 of 1 Job Number: Account: Apex Companies, LLC Collected: 03/29/18 2 Lab Sample ID Client Sample ID Result/ Analyte Qual RL MDL Units Method -1 MW-1 Chloroform ug/l SW C -2 MW-4 Chloroform ug/l SW C -3 MW-6 Chloroform ug/l SW C 4 of 38

25 SGS North America Inc. Dayton, NJ Section 3 3 Sample Results Report of Analysis 5 of 38

26 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID: MW-1 Lab Sample ID: -1 Date Sampled: 03/29/18 Matrix: AQ - Ground Water Date Received: 03/30/18 Method: SW C Percent Solids: n/a File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 L D 1 04/04/18 16:57 VP n/a n/a VL8520 Run #2 Run #1 Run #2 Purge Volume 5.0 ml VOA Full List + Oxygenates CAS No. Compound Result RL MDL Units Q Acetone a ND ug/l Benzene ND ug/l Bromobenzene ND ug/l Bromochloromethane ND ug/l Bromodichloromethane ND ug/l Bromoform ND ug/l Bromomethane ND ug/l Butanone (MEK) ND ug/l n-butylbenzene ND ug/l sec-butylbenzene ND ug/l tert-butylbenzene ND ug/l Carbon tetrachloride ND ug/l Chlorobenzene ND ug/l Chloroethane ND ug/l Chloroform ug/l Chloromethane ND ug/l o-chlorotoluene ND ug/l p-chlorotoluene ND ug/l Di-Isopropyl ether ND ug/l ,2-Dibromo-3-chloropropane ND ug/l Dibromochloromethane ND ug/l ,2-Dibromoethane ND ug/l ,2-Dichlorobenzene ND ug/l ,3-Dichlorobenzene ND ug/l ,4-Dichlorobenzene ND ug/l Dichlorodifluoromethane ND ug/l ,1-Dichloroethane ND ug/l ,2-Dichloroethane ND ug/l ,1-Dichloroethene ND ug/l cis-1,2-dichloroethene ND ug/l trans-1,2-dichloroethene ND ug/l ,2-Dichloropropane ND ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 6 of 38

27 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID: MW-1 Lab Sample ID: -1 Date Sampled: 03/29/18 Matrix: AQ - Ground Water Date Received: 03/30/18 Method: SW C Percent Solids: n/a VOA Full List + Oxygenates CAS No. Compound Result RL MDL Units Q ,3-Dichloropropane ND ug/l ,2-Dichloropropane ND ug/l ,1-Dichloropropene ND ug/l cis-1,3-dichloropropene ND ug/l trans-1,3-dichloropropene ND ug/l Ethylbenzene ND ug/l Hexachlorobutadiene ND ug/l Isopropylbenzene ND ug/l p-isopropyltoluene ND ug/l Methyl Tert Butyl Ether ND ug/l Methyl-2-pentanone(MIBK) ND ug/l Methylene bromide ND ug/l Methylene chloride ND ug/l Naphthalene ND ug/l n-propylbenzene ND ug/l Styrene ND ug/l Tert Butyl Alcohol ND ug/l tert-amyl Methyl Ether ND ug/l tert-butyl Ethyl Ether ND ug/l ,1,1,2-Tetrachloroethane ND ug/l ,1,2,2-Tetrachloroethane ND ug/l Tetrachloroethene ND ug/l Toluene ND ug/l ,2,3-Trichlorobenzene ND ug/l ,2,4-Trichlorobenzene ND ug/l ,1,1-Trichloroethane ND ug/l ,1,2-Trichloroethane ND ug/l Trichloroethene ND ug/l Trichlorofluoromethane ND ug/l ,2,3-Trichloropropane ND ug/l ,2,4-Trimethylbenzene ND ug/l ,3,5-Trimethylbenzene ND ug/l Vinyl chloride ND ug/l m,p-xylene ND ug/l o-xylene ND ug/l Xylene (total) ND ug/l CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits Dibromofluoromethane 91% % ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 7 of 38

28 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID: MW-1 Lab Sample ID: -1 Date Sampled: 03/29/18 Matrix: AQ - Ground Water Date Received: 03/30/18 Method: SW C Percent Solids: n/a VOA Full List + Oxygenates CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits ,2-Dichloroethane-D4 101% % Toluene-D8 98% % Bromofluorobenzene 89% % (a) Associated CCV outside of control limits low. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 8 of 38

29 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID: MW-1 Lab Sample ID: -1 Date Sampled: 03/29/18 Matrix: AQ - Ground Water Date Received: 03/30/18 Method: SW C SW C Percent Solids: n/a File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2Z68460.D 1 04/03/18 19:51 RK 04/03/18 05:45 OP11030 G2Z2572 Run #2 Initial Volume Final Volume Run #1 300 ml 1.0 ml Run #2 CAS No. Compound Result RL MDL Units Q TPH-DRO (C10-C28) ND mg/l CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits o-terphenyl 73% % Tetracosane-d50 79% % a-Androstane 70% % ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 9 of 38

30 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID: MW-4 Lab Sample ID: -2 Date Sampled: 03/29/18 Matrix: AQ - Ground Water Date Received: 03/30/18 Method: SW C Percent Solids: n/a File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 L D 1 04/04/18 17:24 VP n/a n/a VL8520 Run #2 Run #1 Run #2 Purge Volume 5.0 ml VOA Full List + Oxygenates CAS No. Compound Result RL MDL Units Q Acetone a ND ug/l Benzene ND ug/l Bromobenzene ND ug/l Bromochloromethane ND ug/l Bromodichloromethane ND ug/l Bromoform ND ug/l Bromomethane ND ug/l Butanone (MEK) ND ug/l n-butylbenzene ND ug/l sec-butylbenzene ND ug/l tert-butylbenzene ND ug/l Carbon tetrachloride ND ug/l Chlorobenzene ND ug/l Chloroethane ND ug/l Chloroform ug/l Chloromethane ND ug/l o-chlorotoluene ND ug/l p-chlorotoluene ND ug/l Di-Isopropyl ether ND ug/l ,2-Dibromo-3-chloropropane ND ug/l Dibromochloromethane ND ug/l ,2-Dibromoethane ND ug/l ,2-Dichlorobenzene ND ug/l ,3-Dichlorobenzene ND ug/l ,4-Dichlorobenzene ND ug/l Dichlorodifluoromethane ND ug/l ,1-Dichloroethane ND ug/l ,2-Dichloroethane ND ug/l ,1-Dichloroethene ND ug/l cis-1,2-dichloroethene ND ug/l trans-1,2-dichloroethene ND ug/l ,2-Dichloropropane ND ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 10 of 38

31 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID: MW-4 Lab Sample ID: -2 Date Sampled: 03/29/18 Matrix: AQ - Ground Water Date Received: 03/30/18 Method: SW C Percent Solids: n/a VOA Full List + Oxygenates CAS No. Compound Result RL MDL Units Q ,3-Dichloropropane ND ug/l ,2-Dichloropropane ND ug/l ,1-Dichloropropene ND ug/l cis-1,3-dichloropropene ND ug/l trans-1,3-dichloropropene ND ug/l Ethylbenzene ND ug/l Hexachlorobutadiene ND ug/l Isopropylbenzene ND ug/l p-isopropyltoluene ND ug/l Methyl Tert Butyl Ether ND ug/l Methyl-2-pentanone(MIBK) ND ug/l Methylene bromide ND ug/l Methylene chloride ND ug/l Naphthalene ND ug/l n-propylbenzene ND ug/l Styrene ND ug/l Tert Butyl Alcohol ND ug/l tert-amyl Methyl Ether ND ug/l tert-butyl Ethyl Ether ND ug/l ,1,1,2-Tetrachloroethane ND ug/l ,1,2,2-Tetrachloroethane ND ug/l Tetrachloroethene ND ug/l Toluene ND ug/l ,2,3-Trichlorobenzene ND ug/l ,2,4-Trichlorobenzene ND ug/l ,1,1-Trichloroethane ND ug/l ,1,2-Trichloroethane ND ug/l Trichloroethene ND ug/l Trichlorofluoromethane ND ug/l ,2,3-Trichloropropane ND ug/l ,2,4-Trimethylbenzene ND ug/l ,3,5-Trimethylbenzene ND ug/l Vinyl chloride ND ug/l m,p-xylene ND ug/l o-xylene ND ug/l Xylene (total) ND ug/l CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits Dibromofluoromethane 95% % ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 11 of 38

32 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID: MW-4 Lab Sample ID: -2 Date Sampled: 03/29/18 Matrix: AQ - Ground Water Date Received: 03/30/18 Method: SW C Percent Solids: n/a VOA Full List + Oxygenates CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits ,2-Dichloroethane-D4 102% % Toluene-D8 97% % Bromofluorobenzene 90% % (a) Associated CCV outside of control limits low. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 12 of 38

33 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID: MW-4 Lab Sample ID: -2 Date Sampled: 03/29/18 Matrix: AQ - Ground Water Date Received: 03/30/18 Method: SW C SW C Percent Solids: n/a File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2Z68463.D 1 04/03/18 21:31 RK 04/03/18 05:45 OP11030 G2Z2572 Run #2 Initial Volume Final Volume Run #1 300 ml 1.0 ml Run #2 CAS No. Compound Result RL MDL Units Q TPH-DRO (C10-C28) ND mg/l CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits o-terphenyl 68% % Tetracosane-d50 71% % a-Androstane 62% % ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 13 of 38

34 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID: MW-6 Lab Sample ID: -3 Date Sampled: 03/29/18 Matrix: AQ - Ground Water Date Received: 03/30/18 Method: SW C Percent Solids: n/a File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 L D 1 04/04/18 17:51 VP n/a n/a VL8520 Run #2 Run #1 Run #2 Purge Volume 5.0 ml VOA Full List + Oxygenates CAS No. Compound Result RL MDL Units Q Acetone a ND ug/l Benzene ND ug/l Bromobenzene ND ug/l Bromochloromethane ND ug/l Bromodichloromethane ND ug/l Bromoform ND ug/l Bromomethane ND ug/l Butanone (MEK) ND ug/l n-butylbenzene ND ug/l sec-butylbenzene ND ug/l tert-butylbenzene ND ug/l Carbon tetrachloride ND ug/l Chlorobenzene ND ug/l Chloroethane ND ug/l Chloroform ug/l Chloromethane ND ug/l o-chlorotoluene ND ug/l p-chlorotoluene ND ug/l Di-Isopropyl ether ND ug/l ,2-Dibromo-3-chloropropane ND ug/l Dibromochloromethane ND ug/l ,2-Dibromoethane ND ug/l ,2-Dichlorobenzene ND ug/l ,3-Dichlorobenzene ND ug/l ,4-Dichlorobenzene ND ug/l Dichlorodifluoromethane ND ug/l ,1-Dichloroethane ND ug/l ,2-Dichloroethane ND ug/l ,1-Dichloroethene ND ug/l cis-1,2-dichloroethene ND ug/l trans-1,2-dichloroethene ND ug/l ,2-Dichloropropane ND ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 14 of 38

35 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID: MW-6 Lab Sample ID: -3 Date Sampled: 03/29/18 Matrix: AQ - Ground Water Date Received: 03/30/18 Method: SW C Percent Solids: n/a VOA Full List + Oxygenates CAS No. Compound Result RL MDL Units Q ,3-Dichloropropane ND ug/l ,2-Dichloropropane ND ug/l ,1-Dichloropropene ND ug/l cis-1,3-dichloropropene ND ug/l trans-1,3-dichloropropene ND ug/l Ethylbenzene ND ug/l Hexachlorobutadiene ND ug/l Isopropylbenzene ND ug/l p-isopropyltoluene ND ug/l Methyl Tert Butyl Ether ND ug/l Methyl-2-pentanone(MIBK) ND ug/l Methylene bromide ND ug/l Methylene chloride ND ug/l Naphthalene ND ug/l n-propylbenzene ND ug/l Styrene ND ug/l Tert Butyl Alcohol ND ug/l tert-amyl Methyl Ether ND ug/l tert-butyl Ethyl Ether ND ug/l ,1,1,2-Tetrachloroethane ND ug/l ,1,2,2-Tetrachloroethane ND ug/l Tetrachloroethene ND ug/l Toluene ND ug/l ,2,3-Trichlorobenzene ND ug/l ,2,4-Trichlorobenzene ND ug/l ,1,1-Trichloroethane ND ug/l ,1,2-Trichloroethane ND ug/l Trichloroethene ND ug/l Trichlorofluoromethane ND ug/l ,2,3-Trichloropropane ND ug/l ,2,4-Trimethylbenzene ND ug/l ,3,5-Trimethylbenzene ND ug/l Vinyl chloride ND ug/l m,p-xylene ND ug/l o-xylene ND ug/l Xylene (total) ND ug/l CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits Dibromofluoromethane 90% % ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 15 of 38

36 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID: MW-6 Lab Sample ID: -3 Date Sampled: 03/29/18 Matrix: AQ - Ground Water Date Received: 03/30/18 Method: SW C Percent Solids: n/a VOA Full List + Oxygenates CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits ,2-Dichloroethane-D4 100% % Toluene-D8 99% % Bromofluorobenzene 88% % (a) Associated CCV outside of control limits low. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 16 of 38

37 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID: MW-6 Lab Sample ID: -3 Date Sampled: 03/29/18 Matrix: AQ - Ground Water Date Received: 03/30/18 Method: SW C SW C Percent Solids: n/a File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2Z68464.D 1 04/03/18 22:04 RK 04/03/18 05:45 OP11030 G2Z2572 Run #2 Initial Volume Final Volume Run #1 300 ml 1.0 ml Run #2 CAS No. Compound Result RL MDL Units Q TPH-DRO (C10-C28) ND mg/l CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits o-terphenyl 71% % Tetracosane-d50 83% % a-Androstane 75% % ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 17 of 38

38 SGS North America Inc. Dayton, NJ Section 4 Misc. Forms 4 Custody Documents and Other Forms Includes the following where applicable: Chain of Custody 18 of 38

39 1111 c.vj CHAIN OF CUSTODY PAGE L OF --' IIAOOUTES-r. Ac<:u18l1 SampJe# LA.ORATORI 2235 Route 130, Dayton, NJ TEL FAX: /3480 FED EX Tracking # ProJect NiVC't+h. ~.k..l 4 ~ ~A State C'_ ~. -!lao ~~ 'N ~ Project # Street Address ~,~,AMaf-T -G>o ~ ~ '.,,,. CII,,,,.._..O",,,' C'W S... Zlp ~ ma(s) Phone # Attention: Q Field 10 I Point of Collection \.M(J 2 l\/lw~y ') I.MW'~ MEOH/DI Vial # Data I Collection Number!lf praserved Bottles '-::::t, Time Sampled by :t ~ I ~ ~ ~ is ~ ~ I 'V lop)c>ivi'wi\vi"1iiiiiiii )c.i~ Accutest Quota # Al::cutllst Job # -S. 1\F\'1)1:lrU'03 Il.l Y- J(oq Matrix Codes DW Drinking Water GW - Ground Water WW-Water SW - Surface Water SO-Soli SL- Sludge SED-Sediment LIC - Other Liquid AIR-Air SOL - other Solid WP-Wipe FB-Fleld Blank EB-Equlpment Blank RB- Rinse Blank TB-Trip Blank LAB USE ONLY _Turnaround Time (R,u.i...""" rla",,\!xi Std. 10 Business Days DsDayRUsH 3 Day RUSH o 2DayRUSH D 1 Day RUSH o other Emergency & Rush T/A data available VIA Lablink Approved By (Accuteet PM): I Date: D Commercial "A" (Level 1) NYASP Category A G(J Commercial "B" ( Level 2) D NY ASP Category B FULLT1 (Level 3+4 ) D State Forms NJ Reduced D EDD Format o Commercial "cn D Other D Data NJ Data ofknown Quality Protocol Reporting ",ommercial "A" = Results Only. Commercial "9" = Resu NJ Reduced = Results + CC Su 'a L?r d b lo~ach time sampl~ chang~potlsess' ~~7H-- 13lJ1I,N - ru~:':<::-~~~',lc:.lt, V;~ 13':~#~CeIVedBY: 01,,' I~ate - Relinquished by Sampler: Time: l;ecelved By: Relinquished By: Date Time: Received By: Jor Relinquished by: IDate Time: I;ecelved By: ICustOdY Seal # f'reserved where applicable Cooler T"mp. 5 o o Intact o Not intact I i I Special : Chain of Custody Page 1 of 2 19 of 38