Andrew Nichols Remediation Division Minnesota Pollution Control Agency 520 Lafayette Road St. Paul, MN 55155

Transcription

1 Integral Consulting Inc. 285 Century Place Suite 190 Louisville, CO telephone: facsimile: June 19, 2017 Project No. C594 Andrew Nichols Remediation Division Minnesota Pollution Control Agency 520 Lafayette Road St. Paul, MN Subject: Soil Vapor Extraction Shutdown Evaluation Report Former Ashland Lease Area Soo Line Shoreham Yard (SF) Site ID SR380 Dear Andrew: On behalf of Ashland Inc. (Ashland), this letter provides the results for shutdown testing of the Former Ashland Lease Area (FALA) soil vapor extraction (SVE) system and a work plan for soil gas sampling on the east side of Central Avenue. SHUTDOWN EVALUATION Per the 2005 interim response action plan (IRAP) 1, SVE shutdown testing in the form of rebound and restart evaluations can commence at the point that an asymptotically low rate of mass removal is observed. The IRAP states that if the mass removal rate repeatedly rebounds not more than 15 percent higher than the asymptotic removal rate, the system will be shut down. The FALA alluvium SVE system reached a state of asymptotic removal in The till SVE system was near asymptotic in 2012, with low mass removal rates, and continued to operate to stimulate aerobic degradation at the water table until late 2016, when the till system also reached an asymptotic state. The FALA SVE shutdown test occurred from December 2016 to January 2017 and consisted of three cycles, each with one 1 Golder Interim response action plan for the former Ashland/Rocket lease area, East Side Shoreham facility, VIC program site ID VP5080 and the Petroleum Brownfields Program leak site No , Minneapolis, MN. May. Golder Associates Inc., Cherry Hill, NJ.

2 Andrew Nichols June 19, 2017 Page 2 week of system shutdown followed by one week of system operation. The test was performed in accordance with the October 3, work plan, approved by the Minnesota Pollution Control Agency (MPCA) on November 2, Prior to the start of the test, an ad hoc soil gas sample was collected for volatile organic compound (VOC) analysis by U.S. Environmental Protection Agency TO-15 from the shallow vapor monitoring point T-VM-4S. T-VM-4S serves as a receptor-depth (4 feet below ground surface) location on the east side of Central Avenue (Figure 1). Sampling of T-VM-4S began in 2013, upon temporary shutdown of the alluvium SVE system, and sampling was suspended in 2014, after trichloroethene (TCE) concentrations in two successive warm weather samples were below the MPCA intrusion screening value (ISV) for commercial/industrial sub-slab air. T-VM-4S was not scheduled to be monitored again until after final rebound testing; however, it was decided sampling before rebound testing (till system in operation) would be beneficial to evaluate conditions after the 2-year alluvium system shutdown period. Additional ad hoc VOC samples from T-VM-4S were planned during the rebound test while both SVE systems were off. However, no further samples could be collected as the shallow vapor monitoring point was blocked by ice near the ground surface for the duration of the test. Following collection of the soil gas sample on December 6, 2016, the alluvium system was restarted. Initial samples for VOC analysis were collected from the till and alluvium manifolds on December 13 and 14, 2016, respectively, after the alluvium system had been on for 1 week. The sample canister for the initial alluvium manifold sample was received without vacuum, delaying the sample collection and start of the test by 1 day until a replacement canister was obtained. No further sample collection issues were encountered during the test. The first shutdown test cycle began on December 14, 2016, with the shutdown of both the till and alluvium systems. On December 20, 2016, after the 1-week rebound period, both systems were turned on and VOC samples were collected from the till and alluvium manifolds at 2 hours, 24 hours, 72 hours, and 1 week after system restart. The manifolds were also monitored by photoionization detector (PID) at the same time intervals after system restart. System operational data were collected during each site visit. The second and third shutdown test cycles proceeded in the same manner, and the test was concluded on January 24, The alluvium system was shut off at the conclusion of the test and the till system remained on. 2 Integral Soil vapor extraction system operations, Former Ashland Lease Area Soo Line Shoreham Yard (SF), Site ID SR380. October 3. Integral Consulting Inc., Louisville, CO.

3 Andrew Nichols June 19, 2017 Page 3 SHUTDOWN EVALUATION RESULTS VOC results for the till and alluvium manifolds are presented in Tables 1 and 2, respectively. The sum of chlorinated, non-chlorinated, and all VOCs is presented at the bottom of each table. VOCs detected in both systems consisted mainly of chlorinated VOCs and ranged from 158 to 1,252 µg/m 3 total VOCs in the till and 64 to 1,285 µg/m 3 total VOCs in the alluvium. PID readings were low throughout the test, ranging from 0 to 0.2 ppm, and therefore were not used in the rebound evaluation. All VOC laboratory reports are attached in Appendix A. Table 3 contains a summary of VOC concentrations, flow rates, mass removed, and mass removal rates for each system. First, instantaneous removal rates were calculated at each sample time by multiplying the concentration by the flow rate. Then, the mass removed for each time interval was calculated using the instantaneous removal rates (e.g., the 2-hour sample was used to calculate the mass removed from 0 to 2 hours after system restart, the average of the 2-hour and 24-hour samples was used to calculate the mass removed from 2 to 24 hours). An average cycle recovery rate was calculated by dividing the total mass removed by the total elapsed time, including the shutdown period (i.e., the entire 2-week cycle). The rates for the three cycles were then averaged to determine the overall shutdown test removal rates. At the bottom of Table 3, the overall average shutdown test removal rate (average of the three cycles) is compared to the average asymptotic removal rate for each system. The shutdown test rates were an order of magnitude lower than the asymptotic rates for both systems, lb/hr versus lb/hr in the till system and lb/hr versus lb/hr in the alluvium system. The asymptotic removal rates are defined as the average rate for the period used in the Mann-Kendall trend analysis (presented in August 14, and October 3, letters to MPCA). The average rates as well as the instantaneous rates are displayed in Figure 2. In addition to the low shutdown test removal rates, no single instantaneous removal rate rebounded above the average asymptotic rates in the respective systems. Table 4 presents TCE results from shallow vapor monitoring point, T-VM-4S, on the east side of Central Avenue. The December 6, 2016, sample, collected prior to the test, contained 96 µg/m 3 TCE. Although this concentration is increased compared to the samples collected in 2013 and 2014, it is below the MPCA commercial/industrial sub-slab 3 Integral Vapor investigation and soil vapor extraction system operations, Former Ashland Lease Area Soo Line Shoreham Yard (SF), Site ID SR380. August 14. Integral Consulting Inc., Louisville, CO. 4 See footnote 2.

4 Andrew Nichols June 19, 2017 Page 4 air ISV of 230 µg/m 3 (i.e., 33 times the commercial/industrial indoor air ISV). 5 All other detected compounds were also below their respective commercial/industrial sub-slab air ISVs. SYSTEM SHUTDOWN AND SOIL GAS REBOUND TESTING Because recent shutdown testing performed at the FALA did not rebound above the asymptotic removal rate, it is recommended that the FALA till and alluvium systems be shut down while confirmatory soil and soil gas testing are performed. The IRAP states soil gas testing shall be performed in the median of Central Avenue and at the eastern side of Central Avenue. Because of access issues on the median of Central Avenue and the low recovery rates observed during rebound testing, Ashland proposes to monitor only the T-VM-4S point on the east side of Central Avenue, commencing in the third quarter of Soil gas rebound testing would proceed in the same manner as outlined in the August 14, 2012, letter when the alluvium system was first shut down. Samples will be collected quarterly for one year and analyzed for VOCs by TO-15. If two successive warm weather samples (when concentrations peak) are less than the commercial/industrial subslab air ISVs, soil gas monitoring will be concluded. However, if T-VM-4S VOC concentrations are above the commercial/industrial sub-slab air ISVs, then a plan for delineation of the extent of soil gas above ISVs will be submitted to MPCA. A separate work plan will be submitted for confirmatory soil testing. We would appreciate a response to this letter by June 30, 2017, so that we may initiate soil gas testing for the remaining warm weather season in If you have any questions, please call me at (720) Sincerely, Steven O. Helgen Principal Geochemist Enclosures 5 MPCA Interim ISV short guidance. February 13. Minnesota Pollution Control Agency, Minneapolis, MN.

5 Andrew Nichols June 19, 2017 Page 5 cc: Tom Frame, City of Minneapolis James Vondracek, Ashland LeeAnn Thomas, CP Aimee Zack, CP Steve Finn, Golder Claire Mackler, Golder Councilman Kevin Reich, Minneapolis City Council First Ward Michelle Brodin, Stinson Leonard Street

6 FIGURES

7 } } } } } } } } } } } } } } } } } } } } } } } N:\GIS\Projects\C594_AshlandAve_AI\Production_MXDs\2013_Site_Report\Figure_2-1_SVE_&_monitoring_points_ mxd } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } VEW A50N VEW T-1 VEW A VEW05-79-T-7 } } } } #* #* #* #* } } } } } A-VM-1 T-VM-1 VEW05-73-A-4 #* VEW05-76-T-4 VEW05-75-T-3 T-VM-2 A-VM-2 #* #* #* #* } } } } } } } } VEW05-80-T-8 VEW05-74-A-5 VEW05-81-T-9 T-VM-7 A-VM-5 VEW05-77-T-5 T-VM-3 #* VEW A40-E VEW T-30N T-VM-5 A-VM-4 T-VM-6 VEW05-78-T-6 A-VM-3 #* T-VM-4S T-VM Feet Map Features #* #* Till, Vapor Monitoring Well FALA Boundary Alluvium, Vapor Monitoring Well } } Fence Till, SVE Well Gate Alluvium, SVE Well SVE Pipe Figure 1. Location of SVE Vapor Extraction Wells and Monitoring Points at the Former Ashland Lease Area

8 0.005 FALA SVE Shutdown Test VOC Mass Removal Rates Alluvium Average Asymptotic Mass Removal Rate (April 2010 to April 2012) /14/ /15/ /16/ /17/ /18/ /19/ /20/ /21/ /22/ /23/ /24/ /25/ /26/ /27/ /28/ /29/ /30/ /31/2016 1/1/2017 1/2/2017 1/3/2017 1/4/2017 1/5/2017 1/6/2017 1/7/2017 1/8/2017 1/9/2017 1/10/2017 1/11/2017 1/12/2017 1/13/2017 1/14/2017 1/15/2017 1/16/2017 1/17/2017 1/18/2017 1/19/2017 1/20/2017 VOC Mass Removal Rate (lb/hr) 1/21/2017 1/22/2017 1/23/2017 1/24/2017 Till Average Asymptotic Mass Removal Rate (June 2014 to March 2016) Rebound System OFF Restart System ON CYCLE 1 Rebound System OFF Restart System ON CYCLE 2 Rebound System OFF Restart System ON CYCLE 3 Till Shutdown Test Till Shutdown Test Avg Till Asymptotic Avg Alluvium Shutdown Test Alluvium Shutdown Test Avg Alluvium Asymptotic Avg Figure 2. SVE Shutdown Test VOC Mass Removal Rates and Average Shutdown Test and Average Asymptotic Removal Rates in the Till and Alluvium SVE Systems

9 TABLES

10 SVE Shutdown Evaluation Report Former Ashland Lease Area June 19, 2017 Table 1. VOCs Measured ( TO-15) in the Till Manifold Till Manifold Concentration (µg/m 3 ) Cycle 1 Cycle 2 Cycle 3 Initial Off On 2 hr On 24 hr On 72 hr On 1 wk Off On 2 hr On 24 hr On 72 hr On 1 wk Off On 2 hr On 24 hr On 72 hr On 1 wk Analyte 12/13/ /20/ /21/ /23/ /27/2016 1/3/2017 1/4/2017 1/6/2017 1/10/2017 1/17/2017 1/18/2017 1/20/2017 1/24/2017 Freon ND ND ND ND ND ND ND ND ND ND ND ND Freon 114 ND ND ND ND ND ND ND ND ND ND ND ND ND Chloromethane ND ND ND ND ND ND ND ND ND ND ND ND ND Vinyl Chloride ND ND ND ND ND ND ND ND ND ND ND ND ND 1,3-Butadiene ND ND ND ND ND ND ND ND ND ND ND ND ND Bromomethane ND ND ND ND ND ND ND ND ND ND ND ND ND Chloroethane ND ND ND ND ND ND ND ND ND ND ND ND ND Freon 11 ND ND ND ND ND ND ND ND ND ND ND ND ND Ethanol ND ND ND 7.9 ND ND ND 7.1 ND ND Freon 113 ND ND ND ND ND ND ND ND ND ND ND ND ND 1,1-Dichloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND Acetone 22 ND ND 40 ND ND ND 23 ND ND ND 2-Propanol ND ND ND ND ND ND ND ND ND ND ND Carbon Disulfide ND ND ND ND ND ND ND ND ND ND ND ND ND 3-Chloropropene ND ND ND ND ND ND ND ND ND ND ND ND ND Methylene Chloride ND ND ND ND ND ND ND ND ND ND ND ND ND Methyl tert-butyl Ether ND ND ND ND ND ND ND ND ND ND ND ND ND trans-1,2-dichloroethene 3.7 ND ND ND ND ND ND ND ND ND ND ND ND Hexane 4.2 ND ND ND ND ND ND ND ND ND ND ND ND 1,1-Dichloroethane 11 5 ND ND ND 3.7 ND ND ND 3.4 ND ND ND 2-Butanone (Methyl Ethyl Ketone) 9.5 ND ND 13 ND ND ND ND ND ND ND cis-1,2-dichloroethene Tetrahydrofuran ND ND ND ND ND ND ND ND ND ND ND ND ND Chloroform ND ND ND ND ND ND ND ND ND ND ND ND ND 1,1,1-Trichloroethane Cyclohexane ND ND ND ND ND ND ND ND ND ND ND ND ND Carbon Tetrachloride ND ND ND ND ND ND ND ND ND ND ND ND ND 2,2,4-Trimethylpentane ND ND ND ND ND ND ND ND ND ND ND ND ND Benzene ND ND ND ND ND ND ND ND ND ND 3.3 ND ND 1,2-Dichloroethane ND ND ND ND ND ND ND ND ND ND ND ND ND Heptane ND ND ND ND ND ND ND ND ND ND ND ND ND Trichloroethene ,2-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND 1,4-Dioxane ND ND ND ND ND ND ND ND ND ND ND ND ND Bromodichloromethane ND ND ND ND ND ND ND ND ND ND ND ND ND cis-1,3-dichloropropene ND ND ND ND ND ND ND ND ND ND ND ND ND 4-Methyl-2-Pentanone ND ND ND ND ND ND ND ND ND ND ND ND ND Toluene 9 ND ND ND ND ND ND 4.4 ND ND 5.9 ND ND Integral Consulting Inc. Page 1 of 2

11 SVE Shutdown Evaluation Report Former Ashland Lease Area June 19, 2017 Table 1. VOCs Measured ( TO-15) in the Till Manifold Cycle 1 Till Manifold Concentration (µg/m 3 ) Cycle 2 Cycle 3 Initial On 2 hr On 24 hr On 72 hr On 1 wk On 2 hr On 24 hr On 72 hr On 1 wk On 2 hr On 24 hr On 72 hr On 1 wk Off Off Off Analyte 12/13/ /20/ /21/ /23/ /27/2016 1/3/2017 1/4/2017 1/6/2017 1/10/2017 1/17/2017 1/18/2017 1/20/2017 1/24/2017 trans-1,3-dichloropropene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,1,2-Trichloroethane Tetrachloroethene Hexanone ND ND ND ND ND ND ND ND ND ND ND ND ND Dibromochloromethane ND ND ND ND ND ND ND ND ND ND ND ND ND 1,2-Dibromoethane (EDB) ND ND ND ND ND ND ND ND ND ND ND ND ND Chlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND Ethyl Benzene ND ND ND ND ND ND ND ND ND ND ND ND ND m,p-xylene ND ND ND ND ND ND ND ND ND ND ND o-xylene ND ND ND ND ND ND ND ND ND ND ND ND ND Styrene ND ND ND ND ND ND ND ND ND ND ND ND ND Bromoform ND ND ND ND ND ND ND ND ND ND ND ND ND Cumene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,1,2,2-Tetrachloroethane ND ND ND ND ND ND ND ND ND ND ND ND ND Propylbenzene ND ND ND ND ND ND ND ND ND ND ND ND ND 4-Ethyltoluene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,3,5-Trimethylbenzene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,2,4-Trimethylbenzene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,3-Dichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,4-Dichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND alpha-chlorotoluene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,2-Dichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,2,4-Trichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND Hexachlorobutadiene ND ND ND ND ND ND ND ND ND ND ND ND ND Chlorinated Organics (µg/m 3 ) 1, Non-chlorinated Organics (µg/m 3 ) Total Organics (µg/m 3 ) 1, Notes: ND = analyte not detected VOC = volatile organic compound Integral Consulting Inc. Page 2 of 2

12 SVE Shutdown Evaluation Report Former Ashland Lease Area June 19, 2017 Table 2. VOCs Measured ( TO-15) in the Alluvium Manifold Alluvium Manifold Concentration (µg/m 3 ) Cycle 1 Cycle 2 Cycle 3 Initial Off On 2 hr On 24 hr On 72 hr On 1 wk Off On 2 hr On 24 hr On 72 hr On 1 wk Off On 2 hr On 24 hr On 72 hr On 1 wk Analyte 12/14/ /20/ /21/ /23/ /27/2016 1/3/2017 1/4/2017 1/6/2017 1/10/2017 1/17/2017 1/18/2017 1/20/2017 1/24/2017 Freon ND ND 4.6 ND ND ND 5.2 Freon 114 ND ND ND ND ND ND ND ND ND ND ND ND ND Chloromethane ND ND ND ND ND ND ND ND ND ND ND ND ND Vinyl Chloride ND ND ND ND ND ND ND ND ND ND ND ND ND 1,3-Butadiene ND ND ND ND ND ND ND ND ND ND ND ND ND Bromomethane ND ND ND ND ND ND ND ND ND ND ND ND ND Chloroethane ND ND ND ND ND ND ND ND ND ND ND ND ND Freon 11 ND ND ND ND ND ND ND ND ND ND ND ND ND Ethanol ND ND 6.1 ND ND ND ND ND ND ND ND 19 ND Freon 113 ND ND ND ND ND ND ND ND ND ND ND ND ND 1,1-Dichloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND Acetone ND ND ND ND ND ND ND ND ND ND ND 20 ND 2-Propanol ND ND 8.7 ND ND ND ND ND 10 ND ND 8.9 ND Carbon Disulfide ND ND ND ND ND ND ND ND ND ND ND ND ND 3-Chloropropene ND ND ND ND ND ND ND ND ND ND ND ND ND Methylene Chloride ND ND ND ND ND ND ND ND ND ND ND ND ND Methyl tert-butyl Ether ND ND ND ND ND ND ND ND ND ND ND ND ND trans-1,2-dichloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND Hexane ND ND ND ND ND ND ND ND ND ND ND ND 3.1 1,1-Dichloroethane ND ND ND ND ND ND ND ND ND 2-Butanone (Methyl Ethyl Ketone) ND ND ND ND ND ND ND 15 ND ND ND 10 ND cis-1,2-dichloroethene ND ND ND ND 5.1 ND 6.1 Tetrahydrofuran ND ND ND ND ND ND ND ND ND ND ND 2.3 ND Chloroform ND ND ND ND ND ND ND ND ND ND ND ND ND 1,1,1-Trichloroethane ND Cyclohexane ND ND 6.6 ND ND ND ND ND ND ND ND ND ND Carbon Tetrachloride ND ND ND ND ND ND ND ND ND ND ND ND ND 2,2,4-Trimethylpentane ND ND ND ND ND ND ND ND ND ND ND ND ND Benzene ND ND ND ND ND ND ND ND ND ND ND 3.8 ND 1,2-Dichloroethane ND ND ND ND ND ND ND ND ND ND ND ND ND Heptane ND ND ND ND ND ND ND ND ND ND ND ND ND Trichloroethene ,2-Dichloropropane ND ND ND ND ND ND ND ND ND ND ND ND ND 1,4-Dioxane ND ND ND ND ND ND ND ND ND ND ND ND ND Bromodichloromethane ND ND ND ND ND ND ND ND ND ND ND ND ND cis-1,3-dichloropropene ND ND ND ND ND ND ND ND ND ND ND ND ND 4-Methyl-2-Pentanone ND ND ND ND ND ND ND ND ND ND ND ND ND Toluene ND ND ND ND ND ND ND ND ND ND ND ND ND Integral Consulting Inc. Page 1 of 2

13 SVE Shutdown Evaluation Report Former Ashland Lease Area June 19, 2017 Table 2. VOCs Measured ( TO-15) in the Alluvium Manifold Cycle 1 Alluvium Manifold Concentration (µg/m 3 ) Cycle 2 Cycle 3 Initial On 2 hr On 24 hr On 72 hr On 1 wk On 2 hr On 24 hr On 72 hr On 1 wk On 2 hr On 24 hr On 72 hr On 1 wk Off Off Off Analyte 12/14/ /20/ /21/ /23/ /27/2016 1/3/2017 1/4/2017 1/6/2017 1/10/2017 1/17/2017 1/18/2017 1/20/2017 1/24/2017 trans-1,3-dichloropropene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,1,2-Trichloroethane ND ND 5.5 ND 6.7 ND 4.5 Tetrachloroethene Hexanone ND ND ND ND ND ND ND ND ND ND ND ND ND Dibromochloromethane ND ND ND ND ND ND ND ND ND ND ND ND ND 1,2-Dibromoethane (EDB) ND ND ND ND ND ND ND ND ND ND ND ND ND Chlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND Ethyl Benzene ND ND ND ND ND ND ND ND ND ND ND ND ND m,p-xylene ND ND ND ND ND ND ND ND ND ND ND ND ND o-xylene ND ND ND ND ND ND ND ND ND ND ND ND ND Styrene ND ND ND ND ND ND ND ND ND ND ND ND ND Bromoform ND ND ND ND ND ND ND ND ND ND ND ND ND Cumene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,1,2,2-Tetrachloroethane ND ND ND ND ND ND ND ND ND ND ND ND ND Propylbenzene ND ND ND ND ND ND ND ND ND ND ND ND ND 4-Ethyltoluene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,3,5-Trimethylbenzene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,2,4-Trimethylbenzene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,3-Dichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,4-Dichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND alpha-chlorotoluene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,2-Dichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND 1,2,4-Trichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND Hexachlorobutadiene ND ND ND ND ND ND ND ND ND ND ND ND ND Chlorinated Organics (µg/m 3 ) 290 1,285 1, Non-chlorinated Organics (µg/m 3 ) Total Organics (µg/m 3 ) 290 1,285 1, Notes: ND = analyte not detected VOC = volatile organic compound Integral Consulting Inc. Page 2 of 2

14 SVE Shutdown Evaluation Report Former Ashland Lease Area June 19, 2017 Table 3. Summary of SVE Shutdown Evaluation Results Cycle and Sample Time Total VOCs (µg/m 3 ) Flow Rate (SCFM) Instantaneous Removal Rate (lb/hr) Mass Removed (lb) Time Interval (hr) Average Cycle Removal Rate (lb/hr) Till Alluvium Till Alluvium Till Alluvium Till Alluvium Till Alluvium Sample Date 12/13/2016, 12/14/2016 a Initial 1, Cycle 1 - Off 1 wk /20/2016 Cycle 1 - On 2 hr 772 1, b b 12/21/2016 Cycle 1 - On 24 hr 400 1, b b 12/23/2016 Cycle 1 - On 72 hr /27/2016 Cycle 1 - On 1 wk Cycle 1 - Sum Cycle 2 - Off 1 wk /3/2017 Cycle 2 - On 2 hr /4/2017 Cycle 2 - On 24 hr b b /6/2017 Cycle 2 - On 72 hr b b /10/2017 Cycle 2 - On 1 wk Cycle 2 - Sum Cycle 3 - Off 1 wk /17/2017 Cycle 3 - On 2 hr /18/2017 Cycle 3 - On 24 hr b b /20/2017 Cycle 3 - On 72 hr b b /24/2017 Cycle 3 - On 1 wk Cycle 3 - Sum Shutdown Test Average Removal Rate Asymptotic Average Removal Rate Notes: SCFM = standard cubic feet per minute SVE = soil vapor extraction VOC = volatile organic compound -- = not available Nondetected values were not included in the total VOCs sum. a Due to receipt of a sample canister without vacuum, the till sample was collected on 12/13/2016 and the alluvium sample was collected on 12/14/2016. The first rebound cycle was begun on 12/14/2016 and is therefore 6 days in length. b Flow rates were not recorded for 24-hr and 72-hr samples. An average of the 2-hr and 1-wk cycle samples was used to calculate mass removal rates. Integral Consulting Inc. Page 1 of 1

15 SVE Shutdown Evaluation Report Former Ashland Lease Area June 19, 2017 Table 4. Concentrations of Trichloroethene (TCE) in Shallow Monitoring Point T-VM-4S Sampling Location Sampling Date TCE Concentration (µg/m 3 ) System Operating Status Alluvium SVE Till SVE 7/16/2013 ND On On 9/24/ Off On T-VM-4S 12/18/2013 ND Off On 3/31/2014 ND Off On Notes: ND = non-detect SVE = soil vapor extraction 6/23/2014 ND Off On 9/9/ Off On 12/6/ Off On Integral Consulting Inc. Page 1 of 1

16 APPENDIX A ANALYTICAL DATA REPORTS

17 12/28/2016 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 12/13/2016 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 14

18 WORK ORDER #: Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 12/13/2016 DATE COMPLETED: 12/28/2016 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A T-VM-4S TO "Hg 5 psi 02A Lab Blank TO-15 NA NA 03A CCV TO-15 NA NA 04A LCS TO-15 NA NA 04AA LCSD TO-15 NA NA CERTIFIED BY: DATE: 12/28/16 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 14

19 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# One 6 Liter Summa Canister (100% Certified) sample was received on December 13, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes Sample T-VM-4S was received with significant vacuum remaining in the canister. The residual canister vacuum resulted in elevated reporting limits. Analytical Notes There were no analytical discrepancies. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 14

20 Summary of Detected s Client Sample ID: T-VM-4S Lab ID#: A Tetrahydrofuran 1,1,1-Trichloroethane Trichloroethene Tetrachloroethene Page 4 of 14

21 File Name: p Dil. Factor: 2.77 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: T-VM-4S Lab ID#: A Date of Collection: 12/6/16 9:47:00 AM Date of Analysis: 12/21/16 06:01 PM 1.4 Not Detected 6.8 Not Detected 1.4 Not Detected 9.7 Not Detected 14 Not Detected 29 Not Detected 1.4 Not Detected 3.5 Not Detected 1.4 Not Detected 3.1 Not Detected 14 Not Detected 54 Not Detected 5.5 Not Detected 15 Not Detected 1.4 Not Detected 7.8 Not Detected 5.5 Not Detected 10 Not Detected 1.4 Not Detected 11 Not Detected 1.4 Not Detected 5.5 Not Detected 14 Not Detected 33 Not Detected 5.5 Not Detected 14 Not Detected 5.5 Not Detected 17 Not Detected 5.5 Not Detected 17 Not Detected 14 Not Detected 48 Not Detected 5.5 Not Detected 20 Not Detected 1.4 Not Detected 5.5 Not Detected 1.4 Not Detected 4.9 Not Detected 1.4 Not Detected 5.6 Not Detected 5.5 Not Detected 16 Not Detected 1.4 Not Detected 5.5 Not Detected Not Detected 6.8 Not Detected Not Detected 4.8 Not Detected 1.4 Not Detected 8.7 Not Detected 1.4 Not Detected 6.5 Not Detected 1.4 Not Detected 4.4 Not Detected 1.4 Not Detected 5.6 Not Detected 1.4 Not Detected 5.7 Not Detected Not Detected 6.4 Not Detected 5.5 Not Detected 20 Not Detected 1.4 Not Detected 9.3 Not Detected 1.4 Not Detected 6.3 Not Detected 1.4 Not Detected 5.7 Not Detected 1.4 Not Detected 5.2 Not Detected 1.4 Not Detected 6.3 Not Detected 1.4 Not Detected 7.6 Not Detected Not Detected 23 Not Detected Page 5 of 14

22 File Name: p Dil. Factor: 2.77 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: T-VM-4S Lab ID#: A Date of Collection: 12/6/16 9:47:00 AM Date of Analysis: 12/21/16 06:01 PM 1.4 Not Detected 12 Not Detected 1.4 Not Detected 11 Not Detected 1.4 Not Detected 6.4 Not Detected 1.4 Not Detected 6.0 Not Detected 1.4 Not Detected 6.0 Not Detected 1.4 Not Detected 6.0 Not Detected 1.4 Not Detected 5.9 Not Detected 1.4 Not Detected 14 Not Detected 1.4 Not Detected 6.8 Not Detected 1.4 Not Detected 9.5 Not Detected 1.4 Not Detected 6.8 Not Detected 1.4 Not Detected 6.8 Not Detected 1.4 Not Detected 6.8 Not Detected 1.4 Not Detected 6.8 Not Detected 1.4 Not Detected 8.3 Not Detected 1.4 Not Detected 8.3 Not Detected 1.4 Not Detected 7.2 Not Detected 1.4 Not Detected 8.3 Not Detected 5.5 Not Detected 41 Not Detected 5.5 Not Detected 59 Not Detected Container Type: 6 Liter Summa Canister (100% Certified) Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 14

23 File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 12/21/16 01:22 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 7 of 14

24 File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 12/21/16 01:22 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 14

25 Client Sample ID: CCV Lab ID#: A File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 12/21/16 11:15 AM Page 9 of 14

26 Client Sample ID: CCV Lab ID#: A File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 12/21/16 11:15 AM Page 10 of 14

27 Client Sample ID: LCS Lab ID#: A File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 12/21/16 11:40 AM Page 11 of 14

28 Client Sample ID: LCS Lab ID#: A File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 12/21/16 11:40 AM Page 12 of 14

29 Client Sample ID: LCSD Lab ID#: AA File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 12/21/16 12:04 PM Page 13 of 14

30 Client Sample ID: LCSD Lab ID#: AA File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 12/21/16 12:04 PM Page 14 of 14

31

32 1/4/2017 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: A Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 12/19/2016 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 24

33 WORK ORDER #: A Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 12/19/2016 DATE COMPLETED: 01/04/2017 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # /43500/220 Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A Till TO "Hg 5 psi 02A Alluvium TO "Hg 5 psi 03A Lab Blank TO-15 NA NA 03B Lab Blank TO-15 NA NA 04A CCV TO-15 NA NA 04B CCV TO-15 NA NA 05A LCS TO-15 NA NA 05AA LCSD TO-15 NA NA 05B LCS TO-15 NA NA 05BB LCSD TO-15 NA NA CERTIFIED BY: DATE: 01/04/17 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 24

34 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# A Two 6 Liter Summa Canister samples were received on December 19, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes There was a significant difference (greater than 5.0" Hg) between the measured canister receipt vacuum and that which was reported on the Chain of Custody (COC) for sample Alluvium. A leak test indicated that the valve was functioning properly. Analytical Notes All Quality Control Limit exceedances and affected sample results are noted by flags. Each flag is defined at the bottom of this Case Narrative and on each Sample Result Summary page. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 24

35 Summary of Detected s Client Sample ID: Till Lab ID#: A-01A Freon 12 Acetone trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene Toluene 1,1,2-Trichloroethane Tetrachloroethene Client Sample ID: Alluvium Lab ID#: A-02A Freon 12 cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Page 4 of 24

36 File Name: Dil. Factor: 1.55 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Till Lab ID#: A-01A Date of Collection: 12/13/16 1:34:00 PM Date of Analysis: 12/28/16 04:30 PM Not Detected 5.4 Not Detected 7.8 Not Detected 16 Not Detected 0.78 Not Detected 2.0 Not Detected 0.78 Not Detected 1.7 Not Detected 7.8 Not Detected 30 Not Detected 3.1 Not Detected 8.2 Not Detected 0.78 Not Detected 4.4 Not Detected 3.1 Not Detected 5.8 Not Detected 0.78 Not Detected 5.9 Not Detected 0.78 Not Detected 3.1 Not Detected Not Detected 7.6 Not Detected 3.1 Not Detected 9.6 Not Detected 3.1 Not Detected 9.7 Not Detected 7.8 Not Detected 27 Not Detected 3.1 Not Detected 11 Not Detected Not Detected 2.3 Not Detected 0.78 Not Detected 3.8 Not Detected Not Detected 2.7 Not Detected 0.78 Not Detected 4.9 Not Detected 0.78 Not Detected 3.6 Not Detected 0.78 Not Detected 2.5 Not Detected 0.78 Not Detected 3.1 Not Detected 0.78 Not Detected 3.2 Not Detected Not Detected 3.6 Not Detected 3.1 Not Detected 11 Not Detected 0.78 Not Detected 5.2 Not Detected 0.78 Not Detected 3.5 Not Detected 0.78 Not Detected 3.2 Not Detected Not Detected 3.5 Not Detected Not Detected 13 Not Detected Page 5 of 24

37 File Name: Dil. Factor: 1.55 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Till Lab ID#: A-01A Date of Collection: 12/13/16 1:34:00 PM Date of Analysis: 12/28/16 04:30 PM 0.78 Not Detected 6.6 Not Detected 0.78 Not Detected 6.0 Not Detected 0.78 Not Detected 3.6 Not Detected 0.78 Not Detected 3.4 Not Detected 0.78 Not Detected 3.4 Not Detected 0.78 Not Detected 3.4 Not Detected 0.78 Not Detected 3.3 Not Detected 0.78 Not Detected 8.0 Not Detected 0.78 Not Detected 3.8 Not Detected 0.78 Not Detected 5.3 Not Detected 0.78 Not Detected 3.8 Not Detected 0.78 Not Detected 3.8 Not Detected 0.78 Not Detected 3.8 Not Detected 0.78 Not Detected 3.8 Not Detected 0.78 Not Detected 4.6 Not Detected 0.78 Not Detected 4.6 Not Detected 0.78 Not Detected 4.0 Not Detected 0.78 Not Detected 4.6 Not Detected 3.1 Not Detected 23 Not Detected 3.1 Not Detected 33 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 24

38 File Name: a Dil. Factor: 1.39 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Alluvium Lab ID#: A-02A Date of Collection: 12/14/16 11:36:00 A Date of Analysis: 12/22/16 11:29 PM Not Detected 4.8 Not Detected 7.0 Not Detected 14 Not Detected 0.70 Not Detected 1.8 Not Detected 0.70 Not Detected 1.5 Not Detected 7.0 Not Detected 27 Not Detected 2.8 Not Detected 7.3 Not Detected 0.70 Not Detected 3.9 Not Detected 2.8 Not Detected 5.2 Not Detected 0.70 Not Detected 5.3 Not Detected 0.70 Not Detected 2.8 Not Detected 7.0 Not Detected 16 Not Detected 2.8 Not Detected 6.8 Not Detected 2.8 Not Detected 8.6 Not Detected 2.8 Not Detected 8.7 Not Detected 7.0 Not Detected 24 Not Detected 2.8 Not Detected 10 Not Detected 0.70 Not Detected 2.8 Not Detected 0.70 Not Detected 2.4 Not Detected 0.70 Not Detected 2.8 Not Detected 2.8 Not Detected 8.2 Not Detected Not Detected 2.0 Not Detected 0.70 Not Detected 3.4 Not Detected Not Detected 2.4 Not Detected 0.70 Not Detected 4.4 Not Detected 0.70 Not Detected 3.2 Not Detected 0.70 Not Detected 2.2 Not Detected 0.70 Not Detected 2.8 Not Detected 0.70 Not Detected 2.8 Not Detected Not Detected 3.2 Not Detected 2.8 Not Detected 10 Not Detected 0.70 Not Detected 4.6 Not Detected 0.70 Not Detected 3.2 Not Detected 0.70 Not Detected 2.8 Not Detected 0.70 Not Detected 2.6 Not Detected 0.70 Not Detected 3.2 Not Detected Not Detected 11 Not Detected Page 7 of 24

39 File Name: a Dil. Factor: 1.39 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Alluvium Lab ID#: A-02A Date of Collection: 12/14/16 11:36:00 A Date of Analysis: 12/22/16 11:29 PM 0.70 Not Detected 5.9 Not Detected 0.70 Not Detected 5.3 Not Detected 0.70 Not Detected 3.2 Not Detected 0.70 Not Detected 3.0 Not Detected 0.70 Not Detected 3.0 Not Detected 0.70 Not Detected 3.0 Not Detected 0.70 Not Detected 3.0 Not Detected 0.70 Not Detected 7.2 Not Detected 0.70 Not Detected 3.4 Not Detected 0.70 Not Detected 4.8 Not Detected 0.70 Not Detected 3.4 Not Detected 0.70 Not Detected 3.4 Not Detected 0.70 Not Detected 3.4 Not Detected 0.70 Not Detected 3.4 Not Detected 0.70 Not Detected 4.2 Not Detected 0.70 Not Detected 4.2 Not Detected 0.70 Not Detected 3.6 Not Detected 0.70 Not Detected 4.2 Not Detected 2.8 Not Detected 21 Not Detected 2.8 Not Detected 30 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 24

40 File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A-03A Date of Collection: NA Date of Analysis: 12/22/16 02:31 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 9 of 24

41 File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A-03A Date of Collection: NA Date of Analysis: 12/22/16 02:31 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 10 of 24

42 File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A-03B Date of Collection: NA Date of Analysis: 12/28/16 01:36 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 11 of 24

43 File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A-03B Date of Collection: NA Date of Analysis: 12/28/16 01:36 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 12 of 24

44 Client Sample ID: CCV Lab ID#: A-04A File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 12/22/16 10:07 AM Page 13 of 24

45 Client Sample ID: CCV Lab ID#: A-04A File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 12/22/16 10:07 AM Page 14 of 24

46 Client Sample ID: CCV Lab ID#: A-04B File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 12/28/16 09:16 AM Page 15 of 24

47 Client Sample ID: CCV Lab ID#: A-04B File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 12/28/16 09:16 AM Page 16 of 24

48 Client Sample ID: LCS Lab ID#: A-05A File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 12/22/16 10:32 AM Q Page 17 of 24

49 Client Sample ID: LCS Lab ID#: A-05A File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Q = Exceeds Quality Control limits. Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 12/22/16 10:32 AM Page 18 of 24

50 Client Sample ID: LCSD Lab ID#: A-05AA File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 12/22/16 10:57 AM Q Page 19 of 24

51 Client Sample ID: LCSD Lab ID#: A-05AA File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Q = Exceeds Quality Control limits. Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 12/22/16 10:57 AM Page 20 of 24

52 Client Sample ID: LCS Lab ID#: A-05B File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 12/28/16 09:45 AM Q Page 21 of 24

53 Client Sample ID: LCS Lab ID#: A-05B File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Q = Exceeds Quality Control limits. Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 12/28/16 09:45 AM Page 22 of 24

54 Client Sample ID: LCSD Lab ID#: A-05BB File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 12/28/16 10:13 AM Q Page 23 of 24

55 Client Sample ID: LCSD Lab ID#: A-05BB File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Q = Exceeds Quality Control limits. Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 12/28/16 10:13 AM Page 24 of 24

56

57 1/4/2017 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 12/23/2016 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 16

58 WORK ORDER #: Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 12/23/2016 DATE COMPLETED: 01/04/2017 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # /43500/220 Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A Till TO "Hg 4.8 psi 02A Alluvium TO "Hg 5 psi 03A Lab Blank TO-15 NA NA 04A CCV TO-15 NA NA 05A LCS TO-15 NA NA 05AA LCSD TO-15 NA NA CERTIFIED BY: DATE: 01/04/17 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 16

59 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# Two 6 Liter Summa Canister samples were received on December 23, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes There were no receiving discrepancies. Analytical Notes There were no analytical discrepancies. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 16

60 Summary of Detected s Client Sample ID: Till Lab ID#: A 1,1-Dichloroethane cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Client Sample ID: Alluvium Lab ID#: A Freon 12 1,1-Dichloroethane cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Page 4 of 16

61 File Name: p Dil. Factor: 1.58 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Till Lab ID#: A Date of Collection: 12/20/16 12:35:00 P Date of Analysis: 1/3/17 03:25 PM 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 5.5 Not Detected 7.9 Not Detected 16 Not Detected 0.79 Not Detected 2.0 Not Detected 0.79 Not Detected 1.7 Not Detected 7.9 Not Detected 31 Not Detected 3.2 Not Detected 8.3 Not Detected 0.79 Not Detected 4.4 Not Detected 3.2 Not Detected 6.0 Not Detected 0.79 Not Detected 6.0 Not Detected 0.79 Not Detected 3.1 Not Detected 7.9 Not Detected 19 Not Detected 3.2 Not Detected 7.8 Not Detected 3.2 Not Detected 9.8 Not Detected 3.2 Not Detected 9.9 Not Detected 7.9 Not Detected 27 Not Detected 3.2 Not Detected 11 Not Detected 0.79 Not Detected 3.1 Not Detected 0.79 Not Detected 2.8 Not Detected Not Detected 9.3 Not Detected Not Detected 2.3 Not Detected 0.79 Not Detected 3.8 Not Detected Not Detected 2.7 Not Detected 0.79 Not Detected 5.0 Not Detected 0.79 Not Detected 3.7 Not Detected 0.79 Not Detected 2.5 Not Detected 0.79 Not Detected 3.2 Not Detected 0.79 Not Detected 3.2 Not Detected Not Detected 3.6 Not Detected 3.2 Not Detected 11 Not Detected 0.79 Not Detected 5.3 Not Detected 0.79 Not Detected 3.6 Not Detected 0.79 Not Detected 3.2 Not Detected 0.79 Not Detected 3.0 Not Detected 0.79 Not Detected 3.6 Not Detected Not Detected 13 Not Detected Page 5 of 16

62 File Name: p Dil. Factor: 1.58 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Till Lab ID#: A Date of Collection: 12/20/16 12:35:00 P Date of Analysis: 1/3/17 03:25 PM 0.79 Not Detected 6.7 Not Detected 0.79 Not Detected 6.1 Not Detected 0.79 Not Detected 3.6 Not Detected 0.79 Not Detected 3.4 Not Detected 0.79 Not Detected 3.4 Not Detected 0.79 Not Detected 3.4 Not Detected 0.79 Not Detected 3.4 Not Detected 0.79 Not Detected 8.2 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 5.4 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 4.8 Not Detected 0.79 Not Detected 4.8 Not Detected 0.79 Not Detected 4.1 Not Detected 0.79 Not Detected 4.7 Not Detected 3.2 Not Detected 23 Not Detected 3.2 Not Detected 34 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 16

63 File Name: p Dil. Factor: 1.59 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Alluvium Lab ID#: A Date of Collection: 12/20/16 12:39:00 P Date of Analysis: 1/3/17 03:51 PM Not Detected 5.6 Not Detected 8.0 Not Detected 16 Not Detected 0.80 Not Detected 2.0 Not Detected 0.80 Not Detected 1.8 Not Detected 8.0 Not Detected 31 Not Detected 3.2 Not Detected 8.4 Not Detected 0.80 Not Detected 4.5 Not Detected 3.2 Not Detected 6.0 Not Detected 0.80 Not Detected 6.1 Not Detected 0.80 Not Detected 3.2 Not Detected 8.0 Not Detected 19 Not Detected 3.2 Not Detected 7.8 Not Detected 3.2 Not Detected 9.9 Not Detected 3.2 Not Detected 10 Not Detected 8.0 Not Detected 28 Not Detected 3.2 Not Detected 11 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 2.8 Not Detected Not Detected 9.4 Not Detected Not Detected 2.3 Not Detected 0.80 Not Detected 3.9 Not Detected Not Detected 2.7 Not Detected 0.80 Not Detected 5.0 Not Detected 0.80 Not Detected 3.7 Not Detected 0.80 Not Detected 2.5 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 3.2 Not Detected Not Detected 3.7 Not Detected 3.2 Not Detected 11 Not Detected 0.80 Not Detected 5.3 Not Detected 0.80 Not Detected 3.6 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 3.0 Not Detected 0.80 Not Detected 3.6 Not Detected Not Detected 13 Not Detected Page 7 of 16

64 File Name: p Dil. Factor: 1.59 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Alluvium Lab ID#: A Date of Collection: 12/20/16 12:39:00 P Date of Analysis: 1/3/17 03:51 PM 0.80 Not Detected 6.8 Not Detected 0.80 Not Detected 6.1 Not Detected 0.80 Not Detected 3.6 Not Detected 0.80 Not Detected 3.4 Not Detected 0.80 Not Detected 3.4 Not Detected 0.80 Not Detected 3.4 Not Detected 0.80 Not Detected 3.4 Not Detected 0.80 Not Detected 8.2 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 5.4 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.1 Not Detected 0.80 Not Detected 4.8 Not Detected 3.2 Not Detected 24 Not Detected 3.2 Not Detected 34 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 16

65 File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/3/17 12:10 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 9 of 16

66 File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/3/17 12:10 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 10 of 16

67 Client Sample ID: CCV Lab ID#: A File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/3/17 09:41 AM Page 11 of 16

68 Client Sample ID: CCV Lab ID#: A File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/3/17 09:41 AM Page 12 of 16

69 Client Sample ID: LCS Lab ID#: A File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/3/17 10:05 AM Page 13 of 16

70 Client Sample ID: LCS Lab ID#: A File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/3/17 10:05 AM Page 14 of 16

71 Client Sample ID: LCSD Lab ID#: AA File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/3/17 10:30 AM Page 15 of 16

72 Client Sample ID: LCSD Lab ID#: AA File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/3/17 10:30 AM Page 16 of 16

73 1/10/2017 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 12/23/2016 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 16

74 WORK ORDER #: Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 12/23/2016 DATE COMPLETED: 01/10/2017 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # /43500/220 Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A Till TO "Hg 4.8 psi 02A Alluvium TO "Hg 5 psi 03A Lab Blank TO-15 NA NA 04A CCV TO-15 NA NA 05A LCS TO-15 NA NA 05AA LCSD TO-15 NA NA CERTIFIED BY: DATE: 01/10/17 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 16

75 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# Two 6 Liter Summa Canister samples were received on December 23, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes There were no receiving discrepancies. Analytical Notes There were no analytical discrepancies. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 16

76 Summary of Detected s Client Sample ID: Till Lab ID#: A cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Client Sample ID: Alluvium Lab ID#: A Freon 12 Ethanol 2-Propanol 1,1-Dichloroethane cis-1,2-dichloroethene 1,1,1-Trichloroethane Cyclohexane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Page 4 of 16

77 File Name: p Dil. Factor: 1.62 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Till Lab ID#: A Date of Collection: 12/21/16 10:32:00 A Date of Analysis: 1/3/17 10:13 PM 0.81 Not Detected 4.0 Not Detected 0.81 Not Detected 5.7 Not Detected 8.1 Not Detected 17 Not Detected 0.81 Not Detected 2.1 Not Detected 0.81 Not Detected 1.8 Not Detected 8.1 Not Detected 31 Not Detected 3.2 Not Detected 8.5 Not Detected 0.81 Not Detected 4.6 Not Detected 3.2 Not Detected 6.1 Not Detected 0.81 Not Detected 6.2 Not Detected 0.81 Not Detected 3.2 Not Detected 8.1 Not Detected 19 Not Detected 3.2 Not Detected 8.0 Not Detected 3.2 Not Detected 10 Not Detected 3.2 Not Detected 10 Not Detected 8.1 Not Detected 28 Not Detected 3.2 Not Detected 12 Not Detected 0.81 Not Detected 3.2 Not Detected 0.81 Not Detected 2.8 Not Detected 0.81 Not Detected 3.3 Not Detected 3.2 Not Detected 9.6 Not Detected Not Detected 2.4 Not Detected 0.81 Not Detected 4.0 Not Detected Not Detected 2.8 Not Detected 0.81 Not Detected 5.1 Not Detected 0.81 Not Detected 3.8 Not Detected 0.81 Not Detected 2.6 Not Detected 0.81 Not Detected 3.3 Not Detected 0.81 Not Detected 3.3 Not Detected Not Detected 3.7 Not Detected 3.2 Not Detected 12 Not Detected 0.81 Not Detected 5.4 Not Detected 0.81 Not Detected 3.7 Not Detected 0.81 Not Detected 3.3 Not Detected 0.81 Not Detected 3.0 Not Detected 0.81 Not Detected 3.7 Not Detected Not Detected 13 Not Detected Page 5 of 16

78 File Name: p Dil. Factor: 1.62 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Till Lab ID#: A Date of Collection: 12/21/16 10:32:00 A Date of Analysis: 1/3/17 10:13 PM 0.81 Not Detected 6.9 Not Detected 0.81 Not Detected 6.2 Not Detected 0.81 Not Detected 3.7 Not Detected 0.81 Not Detected 3.5 Not Detected 0.81 Not Detected 3.5 Not Detected 0.81 Not Detected 3.5 Not Detected 0.81 Not Detected 3.4 Not Detected 0.81 Not Detected 8.4 Not Detected 0.81 Not Detected 4.0 Not Detected 0.81 Not Detected 5.6 Not Detected 0.81 Not Detected 4.0 Not Detected 0.81 Not Detected 4.0 Not Detected 0.81 Not Detected 4.0 Not Detected 0.81 Not Detected 4.0 Not Detected 0.81 Not Detected 4.9 Not Detected 0.81 Not Detected 4.9 Not Detected 0.81 Not Detected 4.2 Not Detected 0.81 Not Detected 4.9 Not Detected 3.2 Not Detected 24 Not Detected 3.2 Not Detected 34 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 16

79 File Name: p Dil. Factor: 1.61 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Alluvium Lab ID#: A Date of Collection: 12/21/16 10:38:00 A Date of Analysis: 1/3/17 10:39 PM Not Detected 5.6 Not Detected 8.0 Not Detected 17 Not Detected 0.80 Not Detected 2.0 Not Detected 0.80 Not Detected 1.8 Not Detected 8.0 Not Detected 31 Not Detected 3.2 Not Detected 8.5 Not Detected 0.80 Not Detected 4.5 Not Detected Not Detected 6.2 Not Detected 0.80 Not Detected 3.2 Not Detected 8.0 Not Detected 19 Not Detected Not Detected 10 Not Detected 3.2 Not Detected 10 Not Detected 8.0 Not Detected 28 Not Detected 3.2 Not Detected 12 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 2.8 Not Detected Not Detected 9.5 Not Detected Not Detected 2.4 Not Detected 0.80 Not Detected 3.9 Not Detected Not Detected 5.1 Not Detected 0.80 Not Detected 3.8 Not Detected 0.80 Not Detected 2.6 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 3.3 Not Detected Not Detected 3.7 Not Detected 3.2 Not Detected 12 Not Detected 0.80 Not Detected 5.4 Not Detected 0.80 Not Detected 3.6 Not Detected 0.80 Not Detected 3.3 Not Detected 0.80 Not Detected 3.0 Not Detected 0.80 Not Detected 3.6 Not Detected Not Detected 13 Not Detected Page 7 of 16

80 File Name: p Dil. Factor: 1.61 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Alluvium Lab ID#: A Date of Collection: 12/21/16 10:38:00 A Date of Analysis: 1/3/17 10:39 PM 0.80 Not Detected 6.8 Not Detected 0.80 Not Detected 6.2 Not Detected 0.80 Not Detected 3.7 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.4 Not Detected 0.80 Not Detected 8.3 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 5.5 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.2 Not Detected 0.80 Not Detected 4.8 Not Detected 3.2 Not Detected 24 Not Detected 3.2 Not Detected 34 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 16

81 File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/3/17 12:10 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 9 of 16

82 File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/3/17 12:10 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 10 of 16

83 Client Sample ID: CCV Lab ID#: A File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/3/17 09:41 AM Page 11 of 16

84 Client Sample ID: CCV Lab ID#: A File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/3/17 09:41 AM Page 12 of 16

85 Client Sample ID: LCS Lab ID#: A File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/3/17 10:05 AM Page 13 of 16

86 Client Sample ID: LCS Lab ID#: A File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/3/17 10:05 AM Page 14 of 16

87 Client Sample ID: LCSD Lab ID#: AA File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/3/17 10:30 AM Page 15 of 16

88 Client Sample ID: LCSD Lab ID#: AA File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/3/17 10:30 AM Page 16 of 16

89

90

91 1/11/2017 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 12/30/2016 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 16

92 WORK ORDER #: Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 12/30/2016 DATE COMPLETED: 01/11/2017 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # /43500/220 Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A Till TO "Hg 5.1 psi 02A Alluvium TO "Hg 5.1 psi 03A Lab Blank TO-15 NA NA 04A CCV TO-15 NA NA 05A LCS TO-15 NA NA 05AA LCSD TO-15 NA NA CERTIFIED BY: DATE: 01/11/17 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 16

93 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# Two 6 Liter Summa Canister samples were received on December 30, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes There were no receiving discrepancies. Analytical Notes There were no analytical discrepancies. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 16

94 Summary of Detected s Client Sample ID: Till Lab ID#: A Ethanol Acetone 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Client Sample ID: Alluvium Lab ID#: A Freon 12 1,1-Dichloroethane cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Page 4 of 16

95 File Name: p Dil. Factor: 1.68 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Till Lab ID#: A Date of Collection: 12/23/16 10:10:00 A Date of Analysis: 1/9/17 03:51 PM 0.84 Not Detected 4.2 Not Detected 0.84 Not Detected 5.9 Not Detected 8.4 Not Detected 17 Not Detected 0.84 Not Detected 2.1 Not Detected 0.84 Not Detected 1.8 Not Detected 8.4 Not Detected 33 Not Detected 3.4 Not Detected 8.9 Not Detected 0.84 Not Detected 4.7 Not Detected Not Detected 6.4 Not Detected 0.84 Not Detected 3.3 Not Detected Not Detected 8.2 Not Detected 3.4 Not Detected 10 Not Detected 3.4 Not Detected 10 Not Detected 8.4 Not Detected 29 Not Detected 3.4 Not Detected 12 Not Detected 0.84 Not Detected 3.3 Not Detected 0.84 Not Detected 3.0 Not Detected 0.84 Not Detected 3.4 Not Detected Not Detected 2.5 Not Detected 0.84 Not Detected 4.1 Not Detected Not Detected 2.9 Not Detected 0.84 Not Detected 5.3 Not Detected 0.84 Not Detected 3.9 Not Detected 0.84 Not Detected 2.7 Not Detected 0.84 Not Detected 3.4 Not Detected 0.84 Not Detected 3.4 Not Detected Not Detected 3.9 Not Detected 3.4 Not Detected 12 Not Detected 0.84 Not Detected 5.6 Not Detected 0.84 Not Detected 3.8 Not Detected 0.84 Not Detected 3.4 Not Detected 0.84 Not Detected 3.2 Not Detected 0.84 Not Detected 3.8 Not Detected Not Detected 14 Not Detected Page 5 of 16

96 File Name: p Dil. Factor: 1.68 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Till Lab ID#: A Date of Collection: 12/23/16 10:10:00 A Date of Analysis: 1/9/17 03:51 PM 0.84 Not Detected 7.2 Not Detected 0.84 Not Detected 6.4 Not Detected 0.84 Not Detected 3.9 Not Detected 0.84 Not Detected 3.6 Not Detected 0.84 Not Detected 3.6 Not Detected 0.84 Not Detected 3.6 Not Detected 0.84 Not Detected 3.6 Not Detected 0.84 Not Detected 8.7 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 5.8 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 5.0 Not Detected 0.84 Not Detected 5.0 Not Detected 0.84 Not Detected 4.3 Not Detected 0.84 Not Detected 5.0 Not Detected 3.4 Not Detected 25 Not Detected 3.4 Not Detected 36 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 16

97 File Name: p Dil. Factor: 1.62 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Alluvium Lab ID#: A Date of Collection: 12/23/16 10:17:00 A Date of Analysis: 1/9/17 04:17 PM Not Detected 5.7 Not Detected 8.1 Not Detected 17 Not Detected 0.81 Not Detected 2.1 Not Detected 0.81 Not Detected 1.8 Not Detected 8.1 Not Detected 31 Not Detected 3.2 Not Detected 8.5 Not Detected 0.81 Not Detected 4.6 Not Detected 3.2 Not Detected 6.1 Not Detected 0.81 Not Detected 6.2 Not Detected 0.81 Not Detected 3.2 Not Detected 8.1 Not Detected 19 Not Detected 3.2 Not Detected 8.0 Not Detected 3.2 Not Detected 10 Not Detected 3.2 Not Detected 10 Not Detected 8.1 Not Detected 28 Not Detected 3.2 Not Detected 12 Not Detected 0.81 Not Detected 3.2 Not Detected 0.81 Not Detected 2.8 Not Detected Not Detected 9.6 Not Detected Not Detected 2.4 Not Detected 0.81 Not Detected 4.0 Not Detected Not Detected 2.8 Not Detected 0.81 Not Detected 5.1 Not Detected 0.81 Not Detected 3.8 Not Detected 0.81 Not Detected 2.6 Not Detected 0.81 Not Detected 3.3 Not Detected 0.81 Not Detected 3.3 Not Detected Not Detected 3.7 Not Detected 3.2 Not Detected 12 Not Detected 0.81 Not Detected 5.4 Not Detected 0.81 Not Detected 3.7 Not Detected 0.81 Not Detected 3.3 Not Detected 0.81 Not Detected 3.0 Not Detected 0.81 Not Detected 3.7 Not Detected Not Detected 13 Not Detected Page 7 of 16

98 File Name: p Dil. Factor: 1.62 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Alluvium Lab ID#: A Date of Collection: 12/23/16 10:17:00 A Date of Analysis: 1/9/17 04:17 PM 0.81 Not Detected 6.9 Not Detected 0.81 Not Detected 6.2 Not Detected 0.81 Not Detected 3.7 Not Detected 0.81 Not Detected 3.5 Not Detected 0.81 Not Detected 3.5 Not Detected 0.81 Not Detected 3.5 Not Detected 0.81 Not Detected 3.4 Not Detected 0.81 Not Detected 8.4 Not Detected 0.81 Not Detected 4.0 Not Detected 0.81 Not Detected 5.6 Not Detected 0.81 Not Detected 4.0 Not Detected 0.81 Not Detected 4.0 Not Detected 0.81 Not Detected 4.0 Not Detected 0.81 Not Detected 4.0 Not Detected 0.81 Not Detected 4.9 Not Detected 0.81 Not Detected 4.9 Not Detected 0.81 Not Detected 4.2 Not Detected 0.81 Not Detected 4.9 Not Detected 3.2 Not Detected 24 Not Detected 3.2 Not Detected 34 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 16

99 File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/9/17 01:43 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 9 of 16

100 File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/9/17 01:43 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 10 of 16

101 Client Sample ID: CCV Lab ID#: A File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/9/17 10:54 AM Page 11 of 16

102 Client Sample ID: CCV Lab ID#: A File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/9/17 10:54 AM Page 12 of 16

103 Client Sample ID: LCS Lab ID#: A File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/9/17 11:20 AM Page 13 of 16

104 Client Sample ID: LCS Lab ID#: A File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/9/17 11:20 AM Page 14 of 16

105 Client Sample ID: LCSD Lab ID#: AA File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/9/17 11:46 AM Page 15 of 16

106 Client Sample ID: LCSD Lab ID#: AA File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/9/17 11:46 AM Page 16 of 16

107

108 1/11/2017 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 12/30/2016 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 16

109 WORK ORDER #: Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 12/30/2016 DATE COMPLETED: 01/11/2017 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # /43500/220 Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A Till TO "Hg 5 psi 02A Alluvium TO "Hg 5 psi 03A Lab Blank TO-15 NA NA 04A CCV TO-15 NA NA 05A LCS TO-15 NA NA 05AA LCSD TO-15 NA NA CERTIFIED BY: DATE: 01/11/17 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 16

110 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# Two 6 Liter Summa Canister samples were received on December 30, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes There were no receiving discrepancies. Analytical Notes There were no analytical discrepancies. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 16

111 Summary of Detected s Client Sample ID: Till Lab ID#: A cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Client Sample ID: Alluvium Lab ID#: A Freon 12 1,1-Dichloroethane cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Page 4 of 16

112 File Name: p Dil. Factor: 1.67 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Till Lab ID#: A Date of Collection: 12/27/16 11:46:00 A Date of Analysis: 1/5/17 10:29 PM 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 5.8 Not Detected 8.4 Not Detected 17 Not Detected 0.84 Not Detected 2.1 Not Detected 0.84 Not Detected 1.8 Not Detected 8.4 Not Detected 32 Not Detected 3.3 Not Detected 8.8 Not Detected 0.84 Not Detected 4.7 Not Detected 3.3 Not Detected 6.3 Not Detected 0.84 Not Detected 6.4 Not Detected 0.84 Not Detected 3.3 Not Detected 8.4 Not Detected 20 Not Detected 3.3 Not Detected 8.2 Not Detected 3.3 Not Detected 10 Not Detected 3.3 Not Detected 10 Not Detected 8.4 Not Detected 29 Not Detected 3.3 Not Detected 12 Not Detected 0.84 Not Detected 3.3 Not Detected 0.84 Not Detected 2.9 Not Detected 0.84 Not Detected 3.4 Not Detected 3.3 Not Detected 9.8 Not Detected Not Detected 2.5 Not Detected 0.84 Not Detected 4.1 Not Detected Not Detected 2.9 Not Detected 0.84 Not Detected 5.2 Not Detected 0.84 Not Detected 3.9 Not Detected 0.84 Not Detected 2.7 Not Detected 0.84 Not Detected 3.4 Not Detected 0.84 Not Detected 3.4 Not Detected Not Detected 3.8 Not Detected 3.3 Not Detected 12 Not Detected 0.84 Not Detected 5.6 Not Detected 0.84 Not Detected 3.8 Not Detected 0.84 Not Detected 3.4 Not Detected 0.84 Not Detected 3.1 Not Detected 0.84 Not Detected 3.8 Not Detected Not Detected 14 Not Detected Page 5 of 16

113 File Name: p Dil. Factor: 1.67 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Till Lab ID#: A Date of Collection: 12/27/16 11:46:00 A Date of Analysis: 1/5/17 10:29 PM 0.84 Not Detected 7.1 Not Detected 0.84 Not Detected 6.4 Not Detected 0.84 Not Detected 3.8 Not Detected 0.84 Not Detected 3.6 Not Detected 0.84 Not Detected 3.6 Not Detected 0.84 Not Detected 3.6 Not Detected 0.84 Not Detected 3.6 Not Detected 0.84 Not Detected 8.6 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 5.7 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 5.0 Not Detected 0.84 Not Detected 5.0 Not Detected 0.84 Not Detected 4.3 Not Detected 0.84 Not Detected 5.0 Not Detected 3.3 Not Detected 25 Not Detected 3.3 Not Detected 36 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 16

114 File Name: p Dil. Factor: 1.52 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Alluvium Lab ID#: A Date of Collection: 12/27/16 11:53:00 A Date of Analysis: 1/5/17 10:55 PM Not Detected 5.3 Not Detected 7.6 Not Detected 16 Not Detected 0.76 Not Detected 1.9 Not Detected 0.76 Not Detected 1.7 Not Detected 7.6 Not Detected 30 Not Detected 3.0 Not Detected 8.0 Not Detected 0.76 Not Detected 4.3 Not Detected 3.0 Not Detected 5.7 Not Detected 0.76 Not Detected 5.8 Not Detected 0.76 Not Detected 3.0 Not Detected 7.6 Not Detected 18 Not Detected 3.0 Not Detected 7.5 Not Detected 3.0 Not Detected 9.5 Not Detected 3.0 Not Detected 9.5 Not Detected 7.6 Not Detected 26 Not Detected 3.0 Not Detected 11 Not Detected 0.76 Not Detected 3.0 Not Detected 0.76 Not Detected 2.7 Not Detected Not Detected 9.0 Not Detected Not Detected 2.2 Not Detected 0.76 Not Detected 3.7 Not Detected Not Detected 2.6 Not Detected 0.76 Not Detected 4.8 Not Detected 0.76 Not Detected 3.6 Not Detected 0.76 Not Detected 2.4 Not Detected 0.76 Not Detected 3.1 Not Detected 0.76 Not Detected 3.1 Not Detected Not Detected 3.5 Not Detected 3.0 Not Detected 11 Not Detected 0.76 Not Detected 5.1 Not Detected 0.76 Not Detected 3.4 Not Detected 0.76 Not Detected 3.1 Not Detected 0.76 Not Detected 2.9 Not Detected 0.76 Not Detected 3.4 Not Detected Not Detected 12 Not Detected Page 7 of 16

115 File Name: p Dil. Factor: 1.52 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Alluvium Lab ID#: A Date of Collection: 12/27/16 11:53:00 A Date of Analysis: 1/5/17 10:55 PM 0.76 Not Detected 6.5 Not Detected 0.76 Not Detected 5.8 Not Detected 0.76 Not Detected 3.5 Not Detected 0.76 Not Detected 3.3 Not Detected 0.76 Not Detected 3.3 Not Detected 0.76 Not Detected 3.3 Not Detected 0.76 Not Detected 3.2 Not Detected 0.76 Not Detected 7.8 Not Detected 0.76 Not Detected 3.7 Not Detected 0.76 Not Detected 5.2 Not Detected 0.76 Not Detected 3.7 Not Detected 0.76 Not Detected 3.7 Not Detected 0.76 Not Detected 3.7 Not Detected 0.76 Not Detected 3.7 Not Detected 0.76 Not Detected 4.6 Not Detected 0.76 Not Detected 4.6 Not Detected 0.76 Not Detected 3.9 Not Detected 0.76 Not Detected 4.6 Not Detected 3.0 Not Detected 22 Not Detected 3.0 Not Detected 32 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 16

116 File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/5/17 01:59 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 9 of 16

117 File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/5/17 01:59 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 10 of 16

118 Client Sample ID: CCV Lab ID#: A File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/5/17 12:06 PM Page 11 of 16

119 Client Sample ID: CCV Lab ID#: A File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/5/17 12:06 PM Page 12 of 16

120 Client Sample ID: LCS Lab ID#: A File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/5/17 12:32 PM Page 13 of 16

121 Client Sample ID: LCS Lab ID#: A File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/5/17 12:32 PM Page 14 of 16

122 Client Sample ID: LCSD Lab ID#: AA File Name: p Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/5/17 12:59 PM Page 15 of 16

123 Client Sample ID: LCSD Lab ID#: AA File Name: p Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/5/17 12:59 PM Page 16 of 16

124

125 1/17/2017 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 1/5/2017 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 16

126 WORK ORDER #: Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 01/05/2017 DATE COMPLETED: 01/17/2017 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # /22100/220 Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A Till TO "Hg 5.1 psi 02A Alluvium TO "Hg 4.5 psi 03A Lab Blank TO-15 NA NA 04A CCV TO-15 NA NA 05A LCS TO-15 NA NA 05AA LCSD TO-15 NA NA CERTIFIED BY: DATE: 01/17/17 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 16

127 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# Two 6 Liter Summa Canister samples were received on January 05, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes There were no receiving discrepancies. Analytical Notes There were no analytical discrepancies. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 16

128 Summary of Detected s Client Sample ID: Till Lab ID#: A 1,1-Dichloroethane cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Client Sample ID: Alluvium Lab ID#: A Freon 12 cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Page 4 of 16

129 File Name: Dil. Factor: 1.64 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Till Lab ID#: A Date of Collection: 1/3/17 1:00:00 PM Date of Analysis: 1/9/17 11:14 PM 0.82 Not Detected 4.0 Not Detected 0.82 Not Detected 5.7 Not Detected 8.2 Not Detected 17 Not Detected 0.82 Not Detected 2.1 Not Detected 0.82 Not Detected 1.8 Not Detected 8.2 Not Detected 32 Not Detected 3.3 Not Detected 8.6 Not Detected 0.82 Not Detected 4.6 Not Detected 3.3 Not Detected 6.2 Not Detected 0.82 Not Detected 6.3 Not Detected 0.82 Not Detected 3.2 Not Detected 8.2 Not Detected 19 Not Detected 3.3 Not Detected 8.1 Not Detected 3.3 Not Detected 10 Not Detected 3.3 Not Detected 10 Not Detected 8.2 Not Detected 28 Not Detected 3.3 Not Detected 12 Not Detected 0.82 Not Detected 3.2 Not Detected 0.82 Not Detected 2.9 Not Detected Not Detected 9.7 Not Detected Not Detected 2.4 Not Detected 0.82 Not Detected 4.0 Not Detected Not Detected 2.8 Not Detected 0.82 Not Detected 5.2 Not Detected 0.82 Not Detected 3.8 Not Detected 0.82 Not Detected 2.6 Not Detected 0.82 Not Detected 3.3 Not Detected 0.82 Not Detected 3.4 Not Detected Not Detected 3.8 Not Detected 3.3 Not Detected 12 Not Detected 0.82 Not Detected 5.5 Not Detected 0.82 Not Detected 3.7 Not Detected 0.82 Not Detected 3.4 Not Detected 0.82 Not Detected 3.1 Not Detected 0.82 Not Detected 3.7 Not Detected Not Detected 13 Not Detected Page 5 of 16

130 File Name: Dil. Factor: 1.64 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Till Lab ID#: A Date of Collection: 1/3/17 1:00:00 PM Date of Analysis: 1/9/17 11:14 PM 0.82 Not Detected 7.0 Not Detected 0.82 Not Detected 6.3 Not Detected 0.82 Not Detected 3.8 Not Detected 0.82 Not Detected 3.6 Not Detected 0.82 Not Detected 3.6 Not Detected 0.82 Not Detected 3.6 Not Detected 0.82 Not Detected 3.5 Not Detected 0.82 Not Detected 8.5 Not Detected 0.82 Not Detected 4.0 Not Detected 0.82 Not Detected 5.6 Not Detected 0.82 Not Detected 4.0 Not Detected 0.82 Not Detected 4.0 Not Detected 0.82 Not Detected 4.0 Not Detected 0.82 Not Detected 4.0 Not Detected 0.82 Not Detected 4.9 Not Detected 0.82 Not Detected 4.9 Not Detected 0.82 Not Detected 4.2 Not Detected 0.82 Not Detected 4.9 Not Detected 3.3 Not Detected 24 Not Detected 3.3 Not Detected 35 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 16

131 File Name: Dil. Factor: 1.61 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/3/17 1:12:00 PM Date of Analysis: 1/9/17 11:40 PM Not Detected 5.6 Not Detected 8.0 Not Detected 17 Not Detected 0.80 Not Detected 2.0 Not Detected 0.80 Not Detected 1.8 Not Detected 8.0 Not Detected 31 Not Detected 3.2 Not Detected 8.5 Not Detected 0.80 Not Detected 4.5 Not Detected 3.2 Not Detected 6.1 Not Detected 0.80 Not Detected 6.2 Not Detected 0.80 Not Detected 3.2 Not Detected 8.0 Not Detected 19 Not Detected 3.2 Not Detected 7.9 Not Detected 3.2 Not Detected 10 Not Detected 3.2 Not Detected 10 Not Detected 8.0 Not Detected 28 Not Detected 3.2 Not Detected 12 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 2.8 Not Detected 0.80 Not Detected 3.2 Not Detected 3.2 Not Detected 9.5 Not Detected Not Detected 2.4 Not Detected 0.80 Not Detected 3.9 Not Detected Not Detected 2.8 Not Detected 0.80 Not Detected 5.1 Not Detected 0.80 Not Detected 3.8 Not Detected 0.80 Not Detected 2.6 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 3.3 Not Detected Not Detected 3.7 Not Detected 3.2 Not Detected 12 Not Detected 0.80 Not Detected 5.4 Not Detected 0.80 Not Detected 3.6 Not Detected 0.80 Not Detected 3.3 Not Detected 0.80 Not Detected 3.0 Not Detected 0.80 Not Detected 3.6 Not Detected Not Detected 13 Not Detected Page 7 of 16

132 File Name: Dil. Factor: 1.61 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/3/17 1:12:00 PM Date of Analysis: 1/9/17 11:40 PM 0.80 Not Detected 6.8 Not Detected 0.80 Not Detected 6.2 Not Detected 0.80 Not Detected 3.7 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.4 Not Detected 0.80 Not Detected 8.3 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 5.5 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.2 Not Detected 0.80 Not Detected 4.8 Not Detected 3.2 Not Detected 24 Not Detected 3.2 Not Detected 34 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 16

133 File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/9/17 03:43 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 9 of 16

134 File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/9/17 03:43 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 10 of 16

135 Client Sample ID: CCV Lab ID#: A File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/9/17 12:22 PM Page 11 of 16

136 Client Sample ID: CCV Lab ID#: A File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/9/17 12:22 PM Page 12 of 16

137 Client Sample ID: LCS Lab ID#: A File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/9/17 12:48 PM Page 13 of 16

138 Client Sample ID: LCS Lab ID#: A File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/9/17 12:48 PM Page 14 of 16

139 Client Sample ID: LCSD Lab ID#: AA File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/9/17 01:15 PM Page 15 of 16

140 Client Sample ID: LCSD Lab ID#: AA File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/9/17 01:15 PM Page 16 of 16

141

142 1/16/2017 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 1/9/2017 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 16

143 WORK ORDER #: Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 01/09/2017 DATE COMPLETED: 01/16/2017 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A Till TO "Hg 5 psi 02A Alluvium TO "Hg 5.1 psi 03A Lab Blank TO-15 NA NA 04A CCV TO-15 NA NA 05A LCS TO-15 NA NA 05AA LCSD TO-15 NA NA CERTIFIED BY: DATE: 01/16/17 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 16

144 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# Two 6 Liter Summa Canister samples were received on January 09, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes There were no receiving discrepancies. Analytical Notes All Quality Control Limit exceedances and affected sample results are noted by flags. Each flag is defined at the bottom of this Case Narrative and on each Sample Result Summary page. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 16

145 Summary of Detected s Client Sample ID: Till Lab ID#: A cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene J J Client Sample ID: Alluvium Lab ID#: A Trichloroethene Tetrachloroethene Page 4 of 16

146 File Name: Dil. Factor: 1.65 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Till Lab ID#: A Date of Collection: 1/4/17 1:00:00 PM Date of Analysis: 1/11/17 11:55 PM 0.82 Not Detected 4.1 Not Detected 0.82 Not Detected 5.8 Not Detected 8.2 Not Detected 17 Not Detected 0.82 Not Detected 2.1 Not Detected 0.82 Not Detected 1.8 Not Detected 8.2 Not Detected 32 Not Detected 3.3 Not Detected 8.7 Not Detected 0.82 Not Detected 4.6 Not Detected 3.3 Not Detected 6.2 Not Detected 0.82 Not Detected 6.3 Not Detected 0.82 Not Detected 3.3 Not Detected 8.2 Not Detected 20 Not Detected 3.3 Not Detected 8.1 Not Detected 3.3 Not Detected 10 Not Detected 3.3 Not Detected 10 Not Detected 8.2 Not Detected 29 Not Detected 3.3 Not Detected 12 Not Detected 0.82 Not Detected 3.3 Not Detected 0.82 Not Detected 2.9 Not Detected 0.82 Not Detected 3.3 Not Detected 3.3 Not Detected 9.7 Not Detected J J 0.82 Not Detected 2.4 Not Detected 0.82 Not Detected 4.0 Not Detected Not Detected 2.8 Not Detected 0.82 Not Detected 5.2 Not Detected 0.82 Not Detected 3.8 Not Detected 0.82 Not Detected 2.6 Not Detected 0.82 Not Detected 3.3 Not Detected 0.82 Not Detected 3.4 Not Detected Not Detected 3.8 Not Detected 3.3 Not Detected 12 Not Detected 0.82 Not Detected 5.5 Not Detected 0.82 Not Detected 3.7 Not Detected 0.82 Not Detected 3.4 Not Detected 0.82 Not Detected 3.1 Not Detected 0.82 Not Detected 3.7 Not Detected Not Detected 14 Not Detected Page 5 of 16

147 File Name: Dil. Factor: 1.65 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Till Lab ID#: A Date of Collection: 1/4/17 1:00:00 PM Date of Analysis: 1/11/17 11:55 PM 0.82 Not Detected 7.0 Not Detected 0.82 Not Detected 6.3 Not Detected 0.82 Not Detected 3.8 Not Detected 0.82 Not Detected 3.6 Not Detected 0.82 Not Detected 3.6 Not Detected 0.82 Not Detected 3.6 Not Detected 0.82 Not Detected 3.5 Not Detected 0.82 Not Detected 8.5 Not Detected 0.82 Not Detected 4.0 Not Detected 0.82 Not Detected 5.7 Not Detected 0.82 Not Detected 4.0 Not Detected 0.82 Not Detected 4.0 Not Detected 0.82 Not Detected 4.0 Not Detected 0.82 Not Detected 4.0 Not Detected 0.82 Not Detected 5.0 Not Detected 0.82 Not Detected 5.0 Not Detected 0.82 Not Detected 4.3 Not Detected 0.82 Not Detected 5.0 Not Detected 3.3 Not Detected 24 Not Detected 3.3 Not Detected 35 Not Detected J = Estimated value. Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 16

148 File Name: Dil. Factor: 1.60 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/4/17 1:20:00 PM Date of Analysis: 1/12/17 12:21 AM 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 5.6 Not Detected 8.0 Not Detected 16 Not Detected 0.80 Not Detected 2.0 Not Detected 0.80 Not Detected 1.8 Not Detected 8.0 Not Detected 31 Not Detected 3.2 Not Detected 8.4 Not Detected 0.80 Not Detected 4.5 Not Detected 3.2 Not Detected 6.0 Not Detected 0.80 Not Detected 6.1 Not Detected 0.80 Not Detected 3.2 Not Detected 8.0 Not Detected 19 Not Detected 3.2 Not Detected 7.9 Not Detected 3.2 Not Detected 10 Not Detected 3.2 Not Detected 10 Not Detected 8.0 Not Detected 28 Not Detected 3.2 Not Detected 12 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 2.8 Not Detected 0.80 Not Detected 3.2 Not Detected 3.2 Not Detected 9.4 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 2.4 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 4.4 Not Detected 0.80 Not Detected 2.8 Not Detected 0.80 Not Detected 5.0 Not Detected 0.80 Not Detected 3.7 Not Detected 0.80 Not Detected 2.6 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 3.3 Not Detected Not Detected 3.7 Not Detected 3.2 Not Detected 12 Not Detected 0.80 Not Detected 5.4 Not Detected 0.80 Not Detected 3.6 Not Detected 0.80 Not Detected 3.3 Not Detected 0.80 Not Detected 3.0 Not Detected 0.80 Not Detected 3.6 Not Detected 0.80 Not Detected 4.4 Not Detected Not Detected 13 Not Detected Page 7 of 16

149 File Name: Dil. Factor: 1.60 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/4/17 1:20:00 PM Date of Analysis: 1/12/17 12:21 AM 0.80 Not Detected 6.8 Not Detected 0.80 Not Detected 6.1 Not Detected 0.80 Not Detected 3.7 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.4 Not Detected 0.80 Not Detected 8.3 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 5.5 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.1 Not Detected 0.80 Not Detected 4.8 Not Detected 3.2 Not Detected 24 Not Detected 3.2 Not Detected 34 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 16

150 File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/11/17 02:11 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 9 of 16

151 File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/11/17 02:11 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 10 of 16

152 Client Sample ID: CCV Lab ID#: A File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/11/17 11:53 AM Page 11 of 16

153 Client Sample ID: CCV Lab ID#: A File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/11/17 11:53 AM Page 12 of 16

154 Client Sample ID: LCS Lab ID#: A File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/11/17 10:06 AM Q Page 13 of 16

155 Client Sample ID: LCS Lab ID#: A File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Q = Exceeds Quality Control limits. Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/11/17 10:06 AM Page 14 of 16

156 Client Sample ID: LCSD Lab ID#: AA File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/11/17 10:32 AM Q Page 15 of 16

157 Client Sample ID: LCSD Lab ID#: AA File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Q = Exceeds Quality Control limits. Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/11/17 10:32 AM Page 16 of 16

158

159 1/23/2017 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: R1 Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 1/20/2017 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 16

160 WORK ORDER #: R1 Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 01/20/2017 DATE COMPLETED: 01/18/2017 DATE REISSUED: 01/23/2017 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # /22100/220 Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A Till TO "Hg 5.1 psi 02A Alluvium TO "Hg 4.9 psi 03A Lab Blank TO-15 NA NA 04A CCV TO-15 NA NA 05A LCS TO-15 NA NA 05AA LCSD TO-15 NA NA CERTIFIED BY: DATE: 01/23/17 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 16

161 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# R1 Two 6 Liter Summa Canister samples were received on January 10, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes There were no receiving discrepancies. Analytical Notes There were no analytical discrepancies. The workorder was reissued on January 23, 2017 to correct the surrogate recoveries in samples Till and Alluvium due to laboratory error. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 16

162 Summary of Detected s Client Sample ID: Till Lab ID#: R1-01A Ethanol Acetone cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene Toluene 1,1,2-Trichloroethane Tetrachloroethene Client Sample ID: Alluvium Lab ID#: R1-02A 2-Butanone (Methyl Ethyl Ketone) 1,1,1-Trichloroethane Trichloroethene Tetrachloroethene Page 4 of 16

163 File Name: r1 Dil. Factor: 1.73 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Till Lab ID#: R1-01A Date of Collection: 1/6/17 1:00:00 PM Date of Analysis: 1/12/17 07:29 PM 0.86 Not Detected 4.3 Not Detected 0.86 Not Detected 6.0 Not Detected 8.6 Not Detected 18 Not Detected 0.86 Not Detected 2.2 Not Detected 0.86 Not Detected 1.9 Not Detected 8.6 Not Detected 34 Not Detected 3.5 Not Detected 9.1 Not Detected 0.86 Not Detected 4.9 Not Detected Not Detected 6.6 Not Detected 0.86 Not Detected 3.4 Not Detected Not Detected 8.5 Not Detected 3.5 Not Detected 11 Not Detected 3.5 Not Detected 11 Not Detected 8.6 Not Detected 30 Not Detected 3.5 Not Detected 12 Not Detected 0.86 Not Detected 3.4 Not Detected 0.86 Not Detected 3.0 Not Detected 0.86 Not Detected 3.5 Not Detected 3.5 Not Detected 10 Not Detected Not Detected 2.6 Not Detected 0.86 Not Detected 4.2 Not Detected Not Detected 3.0 Not Detected 0.86 Not Detected 5.4 Not Detected 0.86 Not Detected 4.0 Not Detected 0.86 Not Detected 2.8 Not Detected 0.86 Not Detected 3.5 Not Detected 0.86 Not Detected 3.5 Not Detected Not Detected 4.0 Not Detected 3.5 Not Detected 12 Not Detected 0.86 Not Detected 5.8 Not Detected 0.86 Not Detected 3.9 Not Detected 0.86 Not Detected 3.5 Not Detected Not Detected 3.9 Not Detected Not Detected 14 Not Detected Page 5 of 16

164 File Name: r1 Dil. Factor: 1.73 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Till Lab ID#: R1-01A Date of Collection: 1/6/17 1:00:00 PM Date of Analysis: 1/12/17 07:29 PM 0.86 Not Detected 7.4 Not Detected 0.86 Not Detected 6.6 Not Detected 0.86 Not Detected 4.0 Not Detected 0.86 Not Detected 3.8 Not Detected 0.86 Not Detected 3.8 Not Detected 0.86 Not Detected 3.8 Not Detected 0.86 Not Detected 3.7 Not Detected 0.86 Not Detected 8.9 Not Detected 0.86 Not Detected 4.2 Not Detected 0.86 Not Detected 5.9 Not Detected 0.86 Not Detected 4.2 Not Detected 0.86 Not Detected 4.2 Not Detected 0.86 Not Detected 4.2 Not Detected 0.86 Not Detected 4.2 Not Detected 0.86 Not Detected 5.2 Not Detected 0.86 Not Detected 5.2 Not Detected 0.86 Not Detected 4.5 Not Detected 0.86 Not Detected 5.2 Not Detected 3.5 Not Detected 26 Not Detected 3.5 Not Detected 37 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 16

165 File Name: r1 Dil. Factor: 1.58 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Alluvium Lab ID#: R1-02A Date of Collection: 1/6/17 1:15:00 PM Date of Analysis: 1/12/17 07:00 PM 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 5.5 Not Detected 7.9 Not Detected 16 Not Detected 0.79 Not Detected 2.0 Not Detected 0.79 Not Detected 1.7 Not Detected 7.9 Not Detected 31 Not Detected 3.2 Not Detected 8.3 Not Detected 0.79 Not Detected 4.4 Not Detected 3.2 Not Detected 6.0 Not Detected 0.79 Not Detected 6.0 Not Detected 0.79 Not Detected 3.1 Not Detected 7.9 Not Detected 19 Not Detected 3.2 Not Detected 7.8 Not Detected 3.2 Not Detected 9.8 Not Detected 3.2 Not Detected 9.9 Not Detected 7.9 Not Detected 27 Not Detected 3.2 Not Detected 11 Not Detected 0.79 Not Detected 3.1 Not Detected 0.79 Not Detected 2.8 Not Detected 0.79 Not Detected 3.2 Not Detected Not Detected 3.1 Not Detected 0.79 Not Detected 2.3 Not Detected 0.79 Not Detected 3.8 Not Detected Not Detected 2.7 Not Detected 0.79 Not Detected 5.0 Not Detected 0.79 Not Detected 3.7 Not Detected 0.79 Not Detected 2.5 Not Detected 0.79 Not Detected 3.2 Not Detected 0.79 Not Detected 3.2 Not Detected Not Detected 3.6 Not Detected 3.2 Not Detected 11 Not Detected 0.79 Not Detected 5.3 Not Detected 0.79 Not Detected 3.6 Not Detected 0.79 Not Detected 3.2 Not Detected 0.79 Not Detected 3.0 Not Detected 0.79 Not Detected 3.6 Not Detected 0.79 Not Detected 4.3 Not Detected Not Detected 13 Not Detected Page 7 of 16

166 File Name: r1 Dil. Factor: 1.58 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Alluvium Lab ID#: R1-02A Date of Collection: 1/6/17 1:15:00 PM Date of Analysis: 1/12/17 07:00 PM 0.79 Not Detected 6.7 Not Detected 0.79 Not Detected 6.1 Not Detected 0.79 Not Detected 3.6 Not Detected 0.79 Not Detected 3.4 Not Detected 0.79 Not Detected 3.4 Not Detected 0.79 Not Detected 3.4 Not Detected 0.79 Not Detected 3.4 Not Detected 0.79 Not Detected 8.2 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 5.4 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 4.8 Not Detected 0.79 Not Detected 4.8 Not Detected 0.79 Not Detected 4.1 Not Detected 0.79 Not Detected 4.7 Not Detected 3.2 Not Detected 23 Not Detected 3.2 Not Detected 34 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 16

167 File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: R1-03A Date of Collection: NA Date of Analysis: 1/12/17 12:25 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 9 of 16

168 File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: R1-03A Date of Collection: NA Date of Analysis: 1/12/17 12:25 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 10 of 16

169 Client Sample ID: CCV Lab ID#: R1-04A File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/12/17 10:53 AM Page 11 of 16

170 Client Sample ID: CCV Lab ID#: R1-04A File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/12/17 10:53 AM Page 12 of 16

171 Client Sample ID: LCS Lab ID#: R1-05A File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/12/17 11:20 AM Page 13 of 16

172 Client Sample ID: LCS Lab ID#: R1-05A File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/12/17 11:20 AM Page 14 of 16

173 Client Sample ID: LCSD Lab ID#: R1-05AA File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/12/17 11:47 AM Page 15 of 16

174 Client Sample ID: LCSD Lab ID#: R1-05AA File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/12/17 11:47 AM Page 16 of 16

175

176 1/30/2017 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 1/19/2017 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 16

177 WORK ORDER #: Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 01/19/2017 DATE COMPLETED: 01/30/2017 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A Till TO "Hg 5.2 psi 02A Alluvium TO "Hg 5.2 psi 03A Lab Blank TO-15 NA NA 04A CCV TO-15 NA NA 05A LCS TO-15 NA NA 05AA LCSD TO-15 NA NA CERTIFIED BY: DATE: 01/30/17 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 16

178 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# Two 6 Liter Summa Canister samples were received on January 19, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes According to the Chain of Custody (COC), samples Till and Alluvium were collected on 1/10/17. However, the date on the sample tag reflects a collection date of 1/10/16. Therefore the date on the COC was used to calculate the sample holding time. Analytical Notes There were no analytical discrepancies. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 16

179 Summary of Detected s Client Sample ID: Till Lab ID#: A cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Client Sample ID: Alluvium Lab ID#: A Freon 12 2-Propanol 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Page 4 of 16

180 File Name: Dil. Factor: 1.86 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Till Lab ID#: A Date of Collection: 1/10/17 10:50:00 AM Date of Analysis: 1/25/17 03:20 AM 0.93 Not Detected 4.6 Not Detected 0.93 Not Detected 6.5 Not Detected 9.3 Not Detected 19 Not Detected 0.93 Not Detected 2.4 Not Detected 0.93 Not Detected 2.0 Not Detected 9.3 Not Detected 36 Not Detected 3.7 Not Detected 9.8 Not Detected 0.93 Not Detected 5.2 Not Detected 3.7 Not Detected 7.0 Not Detected 0.93 Not Detected 7.1 Not Detected 0.93 Not Detected 3.7 Not Detected 9.3 Not Detected 22 Not Detected 3.7 Not Detected 9.1 Not Detected 3.7 Not Detected 12 Not Detected 3.7 Not Detected 12 Not Detected 9.3 Not Detected 32 Not Detected 3.7 Not Detected 13 Not Detected 0.93 Not Detected 3.7 Not Detected 0.93 Not Detected 3.3 Not Detected 0.93 Not Detected 3.8 Not Detected 3.7 Not Detected 11 Not Detected Not Detected 2.7 Not Detected 0.93 Not Detected 4.5 Not Detected Not Detected 3.2 Not Detected 0.93 Not Detected 5.8 Not Detected 0.93 Not Detected 4.3 Not Detected 0.93 Not Detected 3.0 Not Detected 0.93 Not Detected 3.8 Not Detected 0.93 Not Detected 3.8 Not Detected Not Detected 4.3 Not Detected 3.7 Not Detected 13 Not Detected 0.93 Not Detected 6.2 Not Detected 0.93 Not Detected 4.2 Not Detected 0.93 Not Detected 3.8 Not Detected 0.93 Not Detected 3.5 Not Detected 0.93 Not Detected 4.2 Not Detected Not Detected 15 Not Detected Page 5 of 16

181 File Name: Dil. Factor: 1.86 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Till Lab ID#: A Date of Collection: 1/10/17 10:50:00 AM Date of Analysis: 1/25/17 03:20 AM 0.93 Not Detected 7.9 Not Detected 0.93 Not Detected 7.1 Not Detected 0.93 Not Detected 4.3 Not Detected 0.93 Not Detected 4.0 Not Detected 0.93 Not Detected 4.0 Not Detected 0.93 Not Detected 4.0 Not Detected 0.93 Not Detected 4.0 Not Detected 0.93 Not Detected 9.6 Not Detected 0.93 Not Detected 4.6 Not Detected 0.93 Not Detected 6.4 Not Detected 0.93 Not Detected 4.6 Not Detected 0.93 Not Detected 4.6 Not Detected 0.93 Not Detected 4.6 Not Detected 0.93 Not Detected 4.6 Not Detected 0.93 Not Detected 5.6 Not Detected 0.93 Not Detected 5.6 Not Detected 0.93 Not Detected 4.8 Not Detected 0.93 Not Detected 5.6 Not Detected 3.7 Not Detected 28 Not Detected 3.7 Not Detected 40 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 16

182 File Name: Dil. Factor: 1.86 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/10/17 11:00:00 AM Date of Analysis: 1/25/17 03:48 AM Not Detected 6.5 Not Detected 9.3 Not Detected 19 Not Detected 0.93 Not Detected 2.4 Not Detected 0.93 Not Detected 2.0 Not Detected 9.3 Not Detected 36 Not Detected 3.7 Not Detected 9.8 Not Detected 0.93 Not Detected 5.2 Not Detected 3.7 Not Detected 7.0 Not Detected 0.93 Not Detected 7.1 Not Detected 0.93 Not Detected 3.7 Not Detected 9.3 Not Detected 22 Not Detected Not Detected 12 Not Detected 3.7 Not Detected 12 Not Detected 9.3 Not Detected 32 Not Detected 3.7 Not Detected 13 Not Detected 0.93 Not Detected 3.7 Not Detected 0.93 Not Detected 3.3 Not Detected 0.93 Not Detected 3.8 Not Detected 3.7 Not Detected 11 Not Detected 0.93 Not Detected 3.7 Not Detected 0.93 Not Detected 2.7 Not Detected 0.93 Not Detected 4.5 Not Detected Not Detected 3.2 Not Detected 0.93 Not Detected 5.8 Not Detected 0.93 Not Detected 4.3 Not Detected 0.93 Not Detected 3.0 Not Detected 0.93 Not Detected 3.8 Not Detected 0.93 Not Detected 3.8 Not Detected Not Detected 4.3 Not Detected 3.7 Not Detected 13 Not Detected 0.93 Not Detected 6.2 Not Detected 0.93 Not Detected 4.2 Not Detected 0.93 Not Detected 3.8 Not Detected 0.93 Not Detected 3.5 Not Detected 0.93 Not Detected 4.2 Not Detected Not Detected 15 Not Detected Page 7 of 16

183 File Name: Dil. Factor: 1.86 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/10/17 11:00:00 AM Date of Analysis: 1/25/17 03:48 AM 0.93 Not Detected 7.9 Not Detected 0.93 Not Detected 7.1 Not Detected 0.93 Not Detected 4.3 Not Detected 0.93 Not Detected 4.0 Not Detected 0.93 Not Detected 4.0 Not Detected 0.93 Not Detected 4.0 Not Detected 0.93 Not Detected 4.0 Not Detected 0.93 Not Detected 9.6 Not Detected 0.93 Not Detected 4.6 Not Detected 0.93 Not Detected 6.4 Not Detected 0.93 Not Detected 4.6 Not Detected 0.93 Not Detected 4.6 Not Detected 0.93 Not Detected 4.6 Not Detected 0.93 Not Detected 4.6 Not Detected 0.93 Not Detected 5.6 Not Detected 0.93 Not Detected 5.6 Not Detected 0.93 Not Detected 4.8 Not Detected 0.93 Not Detected 5.6 Not Detected 3.7 Not Detected 28 Not Detected 3.7 Not Detected 40 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 16

184 File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/24/17 01:49 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 9 of 16

185 File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/24/17 01:49 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 10 of 16

186 Client Sample ID: CCV Lab ID#: A File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/24/17 09:47 AM Page 11 of 16

187 Client Sample ID: CCV Lab ID#: A File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/24/17 09:47 AM Page 12 of 16

188 Client Sample ID: LCS Lab ID#: A File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/24/17 10:16 AM Page 13 of 16

189 Client Sample ID: LCS Lab ID#: A File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/24/17 10:16 AM Page 14 of 16

190 Client Sample ID: LCSD Lab ID#: AA File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/24/17 10:43 AM Page 15 of 16

191 Client Sample ID: LCSD Lab ID#: AA File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/24/17 10:43 AM Page 16 of 16

192

193 2/2/2017 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 1/24/2017 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 16

194 WORK ORDER #: Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 01/24/2017 DATE COMPLETED: 02/02/2017 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A Till TO "Hg 4.9 psi 02A Alluvium TO "Hg 4.8 psi 03A Lab Blank TO-15 NA NA 04A CCV TO-15 NA NA 05A LCS TO-15 NA NA 05AA LCSD TO-15 NA NA CERTIFIED BY: DATE: 02/02/17 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 16

195 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# Two 6 Liter Summa Canister samples were received on January 24, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes There were no receiving discrepancies. Analytical Notes There were no analytical discrepancies. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 16

196 Summary of Detected s Client Sample ID: Till Lab ID#: A Ethanol 1,1-Dichloroethane cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene J J Client Sample ID: Alluvium Lab ID#: A 1,1,1-Trichloroethane Trichloroethene Tetrachloroethene Page 4 of 16

197 File Name: a Dil. Factor: 1.67 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Till Lab ID#: A Date of Collection: 1/17/17 2:10:00 PM Date of Analysis: 1/27/17 09:20 PM 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 5.8 Not Detected 8.4 Not Detected 17 Not Detected 0.84 Not Detected 2.1 Not Detected 0.84 Not Detected 1.8 Not Detected 8.4 Not Detected 32 Not Detected 3.3 Not Detected 8.8 Not Detected 0.84 Not Detected 4.7 Not Detected Not Detected 6.4 Not Detected 0.84 Not Detected 3.3 Not Detected 8.4 Not Detected 20 Not Detected 3.3 Not Detected 8.2 Not Detected 3.3 Not Detected 10 Not Detected 3.3 Not Detected 10 Not Detected 8.4 Not Detected 29 Not Detected 3.3 Not Detected 12 Not Detected 0.84 Not Detected 3.3 Not Detected 0.84 Not Detected 2.9 Not Detected J J 3.3 Not Detected 9.8 Not Detected Not Detected 2.5 Not Detected 0.84 Not Detected 4.1 Not Detected Not Detected 2.9 Not Detected 0.84 Not Detected 5.2 Not Detected 0.84 Not Detected 3.9 Not Detected 0.84 Not Detected 2.7 Not Detected 0.84 Not Detected 3.4 Not Detected 0.84 Not Detected 3.4 Not Detected Not Detected 3.8 Not Detected 3.3 Not Detected 12 Not Detected 0.84 Not Detected 5.6 Not Detected 0.84 Not Detected 3.8 Not Detected 0.84 Not Detected 3.4 Not Detected 0.84 Not Detected 3.1 Not Detected 0.84 Not Detected 3.8 Not Detected Not Detected 14 Not Detected Page 5 of 16

198 File Name: a Dil. Factor: 1.67 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Till Lab ID#: A Date of Collection: 1/17/17 2:10:00 PM Date of Analysis: 1/27/17 09:20 PM 0.84 Not Detected 7.1 Not Detected 0.84 Not Detected 6.4 Not Detected 0.84 Not Detected 3.8 Not Detected 0.84 Not Detected 3.6 Not Detected 0.84 Not Detected 3.6 Not Detected 0.84 Not Detected 3.6 Not Detected 0.84 Not Detected 3.6 Not Detected 0.84 Not Detected 8.6 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 5.7 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 4.1 Not Detected 0.84 Not Detected 5.0 Not Detected 0.84 Not Detected 5.0 Not Detected 0.84 Not Detected 4.3 Not Detected 0.84 Not Detected 5.0 Not Detected 3.3 Not Detected 25 Not Detected 3.3 Not Detected 36 Not Detected J = Estimated value. Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 16

199 File Name: a Dil. Factor: 1.60 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/17/17 2:20:00 PM Date of Analysis: 1/27/17 09:46 PM 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 5.6 Not Detected 8.0 Not Detected 16 Not Detected 0.80 Not Detected 2.0 Not Detected 0.80 Not Detected 1.8 Not Detected 8.0 Not Detected 31 Not Detected 3.2 Not Detected 8.4 Not Detected 0.80 Not Detected 4.5 Not Detected 3.2 Not Detected 6.0 Not Detected 0.80 Not Detected 6.1 Not Detected 0.80 Not Detected 3.2 Not Detected 8.0 Not Detected 19 Not Detected 3.2 Not Detected 7.9 Not Detected 3.2 Not Detected 10 Not Detected 3.2 Not Detected 10 Not Detected 8.0 Not Detected 28 Not Detected 3.2 Not Detected 12 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 2.8 Not Detected 0.80 Not Detected 3.2 Not Detected 3.2 Not Detected 9.4 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 2.4 Not Detected 0.80 Not Detected 3.9 Not Detected Not Detected 2.8 Not Detected 0.80 Not Detected 5.0 Not Detected 0.80 Not Detected 3.7 Not Detected 0.80 Not Detected 2.6 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 3.3 Not Detected Not Detected 3.7 Not Detected 3.2 Not Detected 12 Not Detected 0.80 Not Detected 5.4 Not Detected 0.80 Not Detected 3.6 Not Detected 0.80 Not Detected 3.3 Not Detected 0.80 Not Detected 3.0 Not Detected 0.80 Not Detected 3.6 Not Detected 0.80 Not Detected 4.4 Not Detected Not Detected 13 Not Detected Page 7 of 16

200 File Name: a Dil. Factor: 1.60 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/17/17 2:20:00 PM Date of Analysis: 1/27/17 09:46 PM 0.80 Not Detected 6.8 Not Detected 0.80 Not Detected 6.1 Not Detected 0.80 Not Detected 3.7 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.4 Not Detected 0.80 Not Detected 8.3 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 5.5 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.1 Not Detected 0.80 Not Detected 4.8 Not Detected 3.2 Not Detected 24 Not Detected 3.2 Not Detected 34 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 16

201 File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/27/17 12:44 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 9 of 16

202 File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/27/17 12:44 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 10 of 16

203 Client Sample ID: CCV Lab ID#: A File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/27/17 08:36 AM Page 11 of 16

204 Client Sample ID: CCV Lab ID#: A File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/27/17 08:36 AM Page 12 of 16

205 Client Sample ID: LCS Lab ID#: A File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/27/17 09:01 AM Page 13 of 16

206 Client Sample ID: LCS Lab ID#: A File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/27/17 09:01 AM Page 14 of 16

207 Client Sample ID: LCSD Lab ID#: AA File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/27/17 09:26 AM Page 15 of 16

208 Client Sample ID: LCSD Lab ID#: AA File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/27/17 09:26 AM Page 16 of 16

209

210 2/2/2017 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 1/24/2017 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 16

211 WORK ORDER #: Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 01/24/2017 DATE COMPLETED: 02/02/2017 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A Till TO "Hg 4.9 psi 02A Alluvium TO "Hg 5 psi 03A Lab Blank TO-15 NA NA 04A CCV TO-15 NA NA 05A LCS TO-15 NA NA 05AA LCSD TO-15 NA NA CERTIFIED BY: DATE: 02/02/17 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 16

212 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# Two 6 Liter Summa Canister samples were received on January 24, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes There were no receiving discrepancies. Analytical Notes There were no analytical discrepancies. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 16

213 Summary of Detected s Client Sample ID: Till Lab ID#: A Ethanol Acetone 2-Propanol 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene 1,1,1-Trichloroethane Benzene Trichloroethene Toluene 1,1,2-Trichloroethane Tetrachloroethene m,p-xylene Client Sample ID: Alluvium Lab ID#: A cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Page 4 of 16

214 File Name: a Dil. Factor: 1.76 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Till Lab ID#: A Date of Collection: 1/18/17 1:30:00 PM Date of Analysis: 1/27/17 07:21 PM 0.88 Not Detected 4.4 Not Detected 0.88 Not Detected 6.2 Not Detected 8.8 Not Detected 18 Not Detected 0.88 Not Detected 2.2 Not Detected 0.88 Not Detected 1.9 Not Detected 8.8 Not Detected 34 Not Detected 3.5 Not Detected 9.3 Not Detected 0.88 Not Detected 4.9 Not Detected Not Detected 6.7 Not Detected 0.88 Not Detected 3.5 Not Detected Not Detected 11 Not Detected 3.5 Not Detected 11 Not Detected 8.8 Not Detected 30 Not Detected 3.5 Not Detected 13 Not Detected 0.88 Not Detected 3.5 Not Detected 0.88 Not Detected 3.1 Not Detected 0.88 Not Detected 3.6 Not Detected Not Detected 2.6 Not Detected 0.88 Not Detected 4.3 Not Detected Not Detected 3.0 Not Detected 0.88 Not Detected 5.5 Not Detected 0.88 Not Detected 4.1 Not Detected Not Detected 3.6 Not Detected 0.88 Not Detected 3.6 Not Detected Not Detected 4.1 Not Detected 3.5 Not Detected 13 Not Detected 0.88 Not Detected 5.9 Not Detected 0.88 Not Detected 4.0 Not Detected 0.88 Not Detected 3.6 Not Detected Not Detected 4.0 Not Detected Not Detected 14 Not Detected Page 5 of 16

215 File Name: a Dil. Factor: 1.76 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Till Lab ID#: A Date of Collection: 1/18/17 1:30:00 PM Date of Analysis: 1/27/17 07:21 PM 0.88 Not Detected 7.5 Not Detected 0.88 Not Detected 6.8 Not Detected 0.88 Not Detected 4.0 Not Detected 0.88 Not Detected 3.8 Not Detected Not Detected 3.8 Not Detected 0.88 Not Detected 3.7 Not Detected 0.88 Not Detected 9.1 Not Detected 0.88 Not Detected 4.3 Not Detected 0.88 Not Detected 6.0 Not Detected 0.88 Not Detected 4.3 Not Detected 0.88 Not Detected 4.3 Not Detected 0.88 Not Detected 4.3 Not Detected 0.88 Not Detected 4.3 Not Detected 0.88 Not Detected 5.3 Not Detected 0.88 Not Detected 5.3 Not Detected 0.88 Not Detected 4.6 Not Detected 0.88 Not Detected 5.3 Not Detected 3.5 Not Detected 26 Not Detected 3.5 Not Detected 38 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 16

216 File Name: a Dil. Factor: 1.61 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/18/17 1:45:00 PM Date of Analysis: 1/27/17 06:54 PM 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 5.6 Not Detected 8.0 Not Detected 17 Not Detected 0.80 Not Detected 2.0 Not Detected 0.80 Not Detected 1.8 Not Detected 8.0 Not Detected 31 Not Detected 3.2 Not Detected 8.5 Not Detected 0.80 Not Detected 4.5 Not Detected 3.2 Not Detected 6.1 Not Detected 0.80 Not Detected 6.2 Not Detected 0.80 Not Detected 3.2 Not Detected 8.0 Not Detected 19 Not Detected 3.2 Not Detected 7.9 Not Detected 3.2 Not Detected 10 Not Detected 3.2 Not Detected 10 Not Detected 8.0 Not Detected 28 Not Detected 3.2 Not Detected 12 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 2.8 Not Detected 0.80 Not Detected 3.2 Not Detected 3.2 Not Detected 9.5 Not Detected Not Detected 2.4 Not Detected 0.80 Not Detected 3.9 Not Detected Not Detected 2.8 Not Detected 0.80 Not Detected 5.1 Not Detected 0.80 Not Detected 3.8 Not Detected 0.80 Not Detected 2.6 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 3.3 Not Detected Not Detected 3.7 Not Detected 3.2 Not Detected 12 Not Detected 0.80 Not Detected 5.4 Not Detected 0.80 Not Detected 3.6 Not Detected 0.80 Not Detected 3.3 Not Detected 0.80 Not Detected 3.0 Not Detected 0.80 Not Detected 3.6 Not Detected Not Detected 13 Not Detected Page 7 of 16

217 File Name: a Dil. Factor: 1.61 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/18/17 1:45:00 PM Date of Analysis: 1/27/17 06:54 PM 0.80 Not Detected 6.8 Not Detected 0.80 Not Detected 6.2 Not Detected 0.80 Not Detected 3.7 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.4 Not Detected 0.80 Not Detected 8.3 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 5.5 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 4.0 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.2 Not Detected 0.80 Not Detected 4.8 Not Detected 3.2 Not Detected 24 Not Detected 3.2 Not Detected 34 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 16

218 File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/27/17 12:44 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 9 of 16

219 File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/27/17 12:44 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 10 of 16

220 Client Sample ID: CCV Lab ID#: A File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/27/17 08:36 AM Page 11 of 16

221 Client Sample ID: CCV Lab ID#: A File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/27/17 08:36 AM Page 12 of 16

222 Client Sample ID: LCS Lab ID#: A File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/27/17 09:01 AM Page 13 of 16

223 Client Sample ID: LCS Lab ID#: A File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/27/17 09:01 AM Page 14 of 16

224 Client Sample ID: LCSD Lab ID#: AA File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/27/17 09:26 AM Page 15 of 16

225 Client Sample ID: LCSD Lab ID#: AA File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/27/17 09:26 AM Page 16 of 16

226

227 2/7/2017 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 1/27/2017 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 16

228 WORK ORDER #: Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 01/27/2017 DATE COMPLETED: 02/03/2017 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A Till TO "Hg 4.9 psi 02A Alluvium TO "Hg 4.8 psi 03A Lab Blank TO-15 NA NA 04A CCV TO-15 NA NA 05A LCS TO-15 NA NA 05AA LCSD TO-15 NA NA CERTIFIED BY: DATE: 02/07/17 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 16

229 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# Two 6 Liter Summa Canister samples were received on January 27, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes There were no receiving discrepancies. Analytical Notes There were no analytical discrepancies. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 16

230 Summary of Detected s Client Sample ID: Till Lab ID#: A Ethanol Acetone 2-Propanol 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene m,p-xylene Client Sample ID: Alluvium Lab ID#: A Ethanol Acetone 2-Propanol 2-Butanone (Methyl Ethyl Ketone) Tetrahydrofuran 1,1,1-Trichloroethane Benzene Trichloroethene Tetrachloroethene Page 4 of 16

231 File Name: Dil. Factor: 1.72 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Till Lab ID#: A Date of Collection: 1/20/17 11:00:00 AM Date of Analysis: 2/1/17 02:21 AM 0.86 Not Detected 4.2 Not Detected 0.86 Not Detected 6.0 Not Detected 8.6 Not Detected 18 Not Detected 0.86 Not Detected 2.2 Not Detected 0.86 Not Detected 1.9 Not Detected 8.6 Not Detected 33 Not Detected 3.4 Not Detected 9.1 Not Detected 0.86 Not Detected 4.8 Not Detected Not Detected 6.6 Not Detected 0.86 Not Detected 3.4 Not Detected Not Detected 11 Not Detected 3.4 Not Detected 11 Not Detected 8.6 Not Detected 30 Not Detected 3.4 Not Detected 12 Not Detected 0.86 Not Detected 3.4 Not Detected 0.86 Not Detected 3.0 Not Detected 0.86 Not Detected 3.5 Not Detected Not Detected 2.5 Not Detected 0.86 Not Detected 4.2 Not Detected Not Detected 3.0 Not Detected 0.86 Not Detected 5.4 Not Detected 0.86 Not Detected 4.0 Not Detected 0.86 Not Detected 2.7 Not Detected 0.86 Not Detected 3.5 Not Detected 0.86 Not Detected 3.5 Not Detected Not Detected 4.0 Not Detected 3.4 Not Detected 12 Not Detected 0.86 Not Detected 5.8 Not Detected 0.86 Not Detected 3.9 Not Detected 0.86 Not Detected 3.5 Not Detected 0.86 Not Detected 3.2 Not Detected 0.86 Not Detected 3.9 Not Detected Not Detected 14 Not Detected Page 5 of 16

232 File Name: Dil. Factor: 1.72 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Till Lab ID#: A Date of Collection: 1/20/17 11:00:00 AM Date of Analysis: 2/1/17 02:21 AM 0.86 Not Detected 7.3 Not Detected 0.86 Not Detected 6.6 Not Detected 0.86 Not Detected 4.0 Not Detected 0.86 Not Detected 3.7 Not Detected Not Detected 3.7 Not Detected 0.86 Not Detected 3.7 Not Detected 0.86 Not Detected 8.9 Not Detected 0.86 Not Detected 4.2 Not Detected 0.86 Not Detected 5.9 Not Detected 0.86 Not Detected 4.2 Not Detected 0.86 Not Detected 4.2 Not Detected 0.86 Not Detected 4.2 Not Detected 0.86 Not Detected 4.2 Not Detected 0.86 Not Detected 5.2 Not Detected 0.86 Not Detected 5.2 Not Detected 0.86 Not Detected 4.4 Not Detected 0.86 Not Detected 5.2 Not Detected 3.4 Not Detected 26 Not Detected 3.4 Not Detected 37 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 16

233 File Name: Dil. Factor: 1.58 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/20/17 11:15:00 AM Date of Analysis: 2/1/17 02:49 AM 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 5.5 Not Detected 7.9 Not Detected 16 Not Detected 0.79 Not Detected 2.0 Not Detected 0.79 Not Detected 1.7 Not Detected 7.9 Not Detected 31 Not Detected 3.2 Not Detected 8.3 Not Detected 0.79 Not Detected 4.4 Not Detected Not Detected 6.0 Not Detected 0.79 Not Detected 3.1 Not Detected Not Detected 9.8 Not Detected 3.2 Not Detected 9.9 Not Detected 7.9 Not Detected 27 Not Detected 3.2 Not Detected 11 Not Detected 0.79 Not Detected 3.1 Not Detected 0.79 Not Detected 2.8 Not Detected 0.79 Not Detected 3.2 Not Detected Not Detected 3.1 Not Detected Not Detected 3.8 Not Detected Not Detected 2.7 Not Detected 0.79 Not Detected 5.0 Not Detected 0.79 Not Detected 3.7 Not Detected Not Detected 3.2 Not Detected 0.79 Not Detected 3.2 Not Detected Not Detected 3.6 Not Detected 3.2 Not Detected 11 Not Detected 0.79 Not Detected 5.3 Not Detected 0.79 Not Detected 3.6 Not Detected 0.79 Not Detected 3.2 Not Detected 0.79 Not Detected 3.0 Not Detected 0.79 Not Detected 3.6 Not Detected 0.79 Not Detected 4.3 Not Detected Not Detected 13 Not Detected Page 7 of 16

234 File Name: Dil. Factor: 1.58 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/20/17 11:15:00 AM Date of Analysis: 2/1/17 02:49 AM 0.79 Not Detected 6.7 Not Detected 0.79 Not Detected 6.1 Not Detected 0.79 Not Detected 3.6 Not Detected 0.79 Not Detected 3.4 Not Detected 0.79 Not Detected 3.4 Not Detected 0.79 Not Detected 3.4 Not Detected 0.79 Not Detected 3.4 Not Detected 0.79 Not Detected 8.2 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 5.4 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 3.9 Not Detected 0.79 Not Detected 4.8 Not Detected 0.79 Not Detected 4.8 Not Detected 0.79 Not Detected 4.1 Not Detected 0.79 Not Detected 4.7 Not Detected 3.2 Not Detected 23 Not Detected 3.2 Not Detected 34 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 16

235 File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/31/17 04:09 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 9 of 16

236 File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 1/31/17 04:09 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 10 of 16

237 Client Sample ID: CCV Lab ID#: A File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/31/17 09:51 AM Page 11 of 16

238 Client Sample ID: CCV Lab ID#: A File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/31/17 09:51 AM Page 12 of 16

239 Client Sample ID: LCS Lab ID#: A File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/31/17 10:18 AM Page 13 of 16

240 Client Sample ID: LCS Lab ID#: A File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/31/17 10:18 AM Page 14 of 16

241 Client Sample ID: LCSD Lab ID#: AA File Name: Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 1/31/17 10:45 AM Page 15 of 16

242 Client Sample ID: LCSD Lab ID#: AA File Name: Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 1/31/17 10:45 AM Page 16 of 16

243 2/7/2017 Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan MN Project Name: Shoreham Yards Project #: Workorder #: Dear Mr. Brian Deering The following report includes the data for the above referenced project for sample(s) received on 1/27/2017 at Air Toxics Ltd. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics Inc. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Ausha Scott at if you have any questions regarding the data in this report. Regards, Ausha Scott Project Manager Page 1 of 16

244 WORK ORDER #: Work Order Summary CLIENT: PHONE: FAX: Mr. Brian Deering Groundwater & Environmental Services, Inc. (GES) 1285 Corporate Center Drive Suite 120 Eagan, MN DATE RECEIVED: 01/27/2017 DATE COMPLETED: 02/07/2017 BILL TO: PROJECT # CONTACT: Accounts Payable Groundwater & Environmental Services, Inc. (GES) 1350 Blair Drive, Suite A Odenton, MD P.O. # Shoreham Yards Ausha Scott RECEIPT FRACTION # NAME TEST VAC./PRES. FINAL PRESSURE 01A Till TO "Hg 4.9 psi 02A Alluvium TO "Hg 5.1 psi 03A Lab Blank TO-15 NA NA 04A CCV TO-15 NA NA 05A LCS TO-15 NA NA 05AA LCSD TO-15 NA NA CERTIFIED BY: DATE: 02/07/17 Technical Director Certification numbers: AZ Licensure AZ0775, NJ NELAP - CA016, NY NELAP , TX NELAP - T , UT NELAP CA , VA NELAP , WA NELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) Accreditation number: CA300005, Effective date: 10/18/2016, Expiration date: 10/17/2017. Eurofins Air Toxics Inc.. certifies that the test results contained in this report meet all requirements of the NELAC standards This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, Inc. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA (916) (800) FAX (916) Page 2 of 16

245 LABORATORY NARRATIVE EPA TO-15 Groundwater & Environmental Services, Inc. (GES) Workorder# Two 6 Liter Summa Canister samples were received on January 27, The laboratory performed analysis via EPA TO-15 using GC/MS in the full scan mode. This workorder was independently validated prior to submittal using 'USEPA National Functional Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control requirements and verification of all quantified amounts. Receiving Notes There were no receiving discrepancies. Analytical Notes There were no analytical discrepancies. Definition of Data Qualifying Flags Eight qualifiers may have been used on the data analysis sheets and indicates as follows: B - present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. File extensions may have been used on the data analysis sheets and indicates as follows: a-file was requantified b-file was quantified by a second column and detector r1-file was requantified for the purpose of reissue Page 3 of 16

246 Summary of Detected s Client Sample ID: Till Lab ID#: A cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Client Sample ID: Alluvium Lab ID#: A Freon 12 Hexane cis-1,2-dichloroethene 1,1,1-Trichloroethane Trichloroethene 1,1,2-Trichloroethane Tetrachloroethene Page 4 of 16

247 File Name: a Dil. Factor: 1.56 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Till Lab ID#: A Date of Collection: 1/24/17 10:00:00 AM Date of Analysis: 2/2/17 10:48 PM 0.78 Not Detected 3.8 Not Detected 0.78 Not Detected 5.4 Not Detected 7.8 Not Detected 16 Not Detected 0.78 Not Detected 2.0 Not Detected 0.78 Not Detected 1.7 Not Detected 7.8 Not Detected 30 Not Detected 3.1 Not Detected 8.2 Not Detected 0.78 Not Detected 4.4 Not Detected 3.1 Not Detected 5.9 Not Detected 0.78 Not Detected 6.0 Not Detected 0.78 Not Detected 3.1 Not Detected 7.8 Not Detected 18 Not Detected 3.1 Not Detected 7.7 Not Detected 3.1 Not Detected 9.7 Not Detected 3.1 Not Detected 9.8 Not Detected 7.8 Not Detected 27 Not Detected 3.1 Not Detected 11 Not Detected 0.78 Not Detected 3.1 Not Detected 0.78 Not Detected 2.7 Not Detected 0.78 Not Detected 3.2 Not Detected 3.1 Not Detected 9.2 Not Detected Not Detected 2.3 Not Detected 0.78 Not Detected 3.8 Not Detected Not Detected 2.7 Not Detected 0.78 Not Detected 4.9 Not Detected 0.78 Not Detected 3.6 Not Detected 0.78 Not Detected 2.5 Not Detected 0.78 Not Detected 3.2 Not Detected 0.78 Not Detected 3.2 Not Detected Not Detected 3.6 Not Detected 3.1 Not Detected 11 Not Detected 0.78 Not Detected 5.2 Not Detected 0.78 Not Detected 3.5 Not Detected 0.78 Not Detected 3.2 Not Detected 0.78 Not Detected 2.9 Not Detected 0.78 Not Detected 3.5 Not Detected Not Detected 13 Not Detected Page 5 of 16

248 File Name: a Dil. Factor: 1.56 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Till Lab ID#: A Date of Collection: 1/24/17 10:00:00 AM Date of Analysis: 2/2/17 10:48 PM 0.78 Not Detected 6.6 Not Detected 0.78 Not Detected 6.0 Not Detected 0.78 Not Detected 3.6 Not Detected 0.78 Not Detected 3.4 Not Detected 0.78 Not Detected 3.4 Not Detected 0.78 Not Detected 3.4 Not Detected 0.78 Not Detected 3.3 Not Detected 0.78 Not Detected 8.1 Not Detected 0.78 Not Detected 3.8 Not Detected 0.78 Not Detected 5.4 Not Detected 0.78 Not Detected 3.8 Not Detected 0.78 Not Detected 3.8 Not Detected 0.78 Not Detected 3.8 Not Detected 0.78 Not Detected 3.8 Not Detected 0.78 Not Detected 4.7 Not Detected 0.78 Not Detected 4.7 Not Detected 0.78 Not Detected 4.0 Not Detected 0.78 Not Detected 4.7 Not Detected 3.1 Not Detected 23 Not Detected 3.1 Not Detected 33 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 6 of 16

249 File Name: a Dil. Factor: 1.60 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/24/17 10:15:00 AM Date of Analysis: 2/2/17 11:15 PM Not Detected 5.6 Not Detected 8.0 Not Detected 16 Not Detected 0.80 Not Detected 2.0 Not Detected 0.80 Not Detected 1.8 Not Detected 8.0 Not Detected 31 Not Detected 3.2 Not Detected 8.4 Not Detected 0.80 Not Detected 4.5 Not Detected 3.2 Not Detected 6.0 Not Detected 0.80 Not Detected 6.1 Not Detected 0.80 Not Detected 3.2 Not Detected 8.0 Not Detected 19 Not Detected 3.2 Not Detected 7.9 Not Detected 3.2 Not Detected 10 Not Detected 3.2 Not Detected 10 Not Detected 8.0 Not Detected 28 Not Detected 3.2 Not Detected 12 Not Detected 0.80 Not Detected 3.2 Not Detected Not Detected 3.2 Not Detected 3.2 Not Detected 9.4 Not Detected Not Detected 2.4 Not Detected 0.80 Not Detected 3.9 Not Detected Not Detected 2.8 Not Detected 0.80 Not Detected 5.0 Not Detected 0.80 Not Detected 3.7 Not Detected 0.80 Not Detected 2.6 Not Detected 0.80 Not Detected 3.2 Not Detected 0.80 Not Detected 3.3 Not Detected Not Detected 3.7 Not Detected 3.2 Not Detected 12 Not Detected 0.80 Not Detected 5.4 Not Detected 0.80 Not Detected 3.6 Not Detected 0.80 Not Detected 3.3 Not Detected 0.80 Not Detected 3.0 Not Detected 0.80 Not Detected 3.6 Not Detected Not Detected 13 Not Detected Page 7 of 16

250 File Name: a Dil. Factor: 1.60 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Alluvium Lab ID#: A Date of Collection: 1/24/17 10:15:00 AM Date of Analysis: 2/2/17 11:15 PM 0.80 Not Detected 6.8 Not Detected 0.80 Not Detected 6.1 Not Detected 0.80 Not Detected 3.7 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.5 Not Detected 0.80 Not Detected 3.4 Not Detected 0.80 Not Detected 8.3 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 5.5 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 3.9 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.8 Not Detected 0.80 Not Detected 4.1 Not Detected 0.80 Not Detected 4.8 Not Detected 3.2 Not Detected 24 Not Detected 3.2 Not Detected 34 Not Detected Container Type: 6 Liter Summa Canister Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 8 of 16

251 File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 2/2/17 02:42 PM 0.50 Not Detected 2.5 Not Detected 0.50 Not Detected 3.5 Not Detected 5.0 Not Detected 10 Not Detected 0.50 Not Detected 1.3 Not Detected 0.50 Not Detected 1.1 Not Detected 5.0 Not Detected 19 Not Detected 2.0 Not Detected 5.3 Not Detected 0.50 Not Detected 2.8 Not Detected 2.0 Not Detected 3.8 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.0 Not Detected 5.0 Not Detected 12 Not Detected 2.0 Not Detected 4.9 Not Detected 2.0 Not Detected 6.2 Not Detected 2.0 Not Detected 6.3 Not Detected 5.0 Not Detected 17 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.8 Not Detected 0.50 Not Detected 2.0 Not Detected 2.0 Not Detected 5.9 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.5 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 1.7 Not Detected 0.50 Not Detected 3.1 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 1.6 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 2.3 Not Detected 2.0 Not Detected 7.2 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.0 Not Detected 0.50 Not Detected 1.9 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.7 Not Detected 0.50 Not Detected 3.4 Not Detected 2.0 Not Detected 8.2 Not Detected Page 9 of 16

252 File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Client Sample ID: Lab Blank Lab ID#: A Date of Collection: NA Date of Analysis: 2/2/17 02:42 PM 0.50 Not Detected 4.2 Not Detected 0.50 Not Detected 3.8 Not Detected 0.50 Not Detected 2.3 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.2 Not Detected 0.50 Not Detected 2.1 Not Detected 0.50 Not Detected 5.2 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 2.4 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 3.0 Not Detected 0.50 Not Detected 2.6 Not Detected 0.50 Not Detected 3.0 Not Detected 2.0 Not Detected 15 Not Detected 2.0 Not Detected 21 Not Detected Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Page 10 of 16

253 Client Sample ID: CCV Lab ID#: A File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 2/2/17 10:10 AM Page 11 of 16

254 Client Sample ID: CCV Lab ID#: A File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 2/2/17 10:10 AM Page 12 of 16

255 Client Sample ID: LCS Lab ID#: A File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 2/2/17 10:35 AM Page 13 of 16

256 Client Sample ID: LCS Lab ID#: A File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 2/2/17 10:35 AM Page 14 of 16

257 Client Sample ID: LCSD Lab ID#: AA File Name: a Dil. Factor: 1.00 Freon 12 Freon 114 Chloromethane Vinyl Chloride 1,3-Butadiene Bromomethane Chloroethane Freon 11 Ethanol Freon 113 1,1-Dichloroethene Acetone 2-Propanol Carbon Disulfide 3-Chloropropene Methylene Chloride Methyl tert-butyl ether trans-1,2-dichloroethene Hexane 1,1-Dichloroethane 2-Butanone (Methyl Ethyl Ketone) cis-1,2-dichloroethene Tetrahydrofuran Chloroform 1,1,1-Trichloroethane Cyclohexane Carbon Tetrachloride 2,2,4-Trimethylpentane Benzene 1,2-Dichloroethane Heptane Trichloroethene 1,2-Dichloropropane 1,4-Dioxane Bromodichloromethane cis-1,3-dichloropropene 4-Methyl-2-pentanone Toluene trans-1,3-dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Date of Collection: NA Date of Analysis: 2/2/17 11:00 AM Page 15 of 16

258 Client Sample ID: LCSD Lab ID#: AA File Name: a Dil. Factor: 1.00 Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene m,p-xylene o-xylene Styrene Bromoform Cumene 1,1,2,2-Tetrachloroethane Propylbenzene 4-Ethyltoluene 1,3,5-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene alpha-chlorotoluene 1,2-Dichlorobenzene 1,2,4-Trichlorobenzene Hexachlorobutadiene Container Type: NA - Not Applicable Surrogates Toluene-d8 1,2-Dichloroethane-d4 4-Bromofluorobenzene Date of Collection: NA Date of Analysis: 2/2/17 11:00 AM Page 16 of 16

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