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December 29, 2016 | Page 4 File No. 0504-119-00 TestAmerica’s laboratory report is included in Appendix B; chemical analytical results are summarized and compared to MTCA Method A cleanup levels for unrestricted land use in Summary of Chemical Analytical Results – Soil, Tables 1 and 2. BTEX constituents were not reported greater than the laboratory method reporting limits in five of the soil samples submitted (from borings B-3 through B-7); however, the benzene reporting limits for the soil samples collected from borings B-4 and B-6 were greater than the MTCA Method A cleanup levels. GRPH was detected greater than reporting limits in the sample collected from B-5 and DRPH and ORPH were detected above the laboratory method reporting limits in borings B-1 and B-3, but reported concentrations did not exceed the MTCA Method A cleanup levels. Benzene concentrations in the sample collected from boring B-1 and GRPH concentrations in the samples collected from borings B-1 and B-2 exceeded the respective MTCA Method A cleanup levels. TABLE 1. SUMMARY OF CHEMICAL ANALYTICAL RESULTS – SOIL (BTEXN) Sample Identification Date Sampled Units Benzene Toluene Ethylbenzene m,p-Xylene o-Xylene Total Xylenes Naphthalene Site-3:B- 1(4.5-4.75) 12/02/16 mg/kg <0.10 0.61 <0.51 <2.0 <1.0 <3.0 <1.0 Site-3:B- 2(4.5-4.75) 12/02/16 mg/kg 0.032 <0.14 <0.14 <0.55 <0.28 <0.83 <0.28 Site-3:B- 3(6.5-6.75) 12/02/16 mg/kg <0.030 <0.15 <0.15 <0.60 <0.30 <0.90 <0.30 Site-3:B-4 (6-6.25) 12/02/16 mg/kg <0.031 <0.16 <0.16 <0.62 <0.31 <0.93 <0.31 Site-3:B-5 (4.75-5) 12/02/16 mg/kg <0.023 <0.12 <0.12 <0.46 <0.23 <0.70 <0.23 Site-3:B-6 (8-8.25) 12/02/16 mg/kg <0.023 <0.12 <0.12 <0.46 <0.23 <0.70 <0.23 Site-3: B-7 (6-6.25) 12/02/16 mg/kg <0.033 <0.16 <0.16 <0.66 <0.33 <0.99 <0.33 MTCA Method A CUL1 mg/kg 0.03 7 6 -- -- 9 5 Notes: 1MTCA Method A CUL - Washington State Model Toxics Control Act Method A unrestricted land use cleanup level mg/kg – milligrams per kilogram Bold - Analyte concentrations are greater than the laboratory method reporting limit. Yellow Highlight – Analyte concentrations exceeds MTCA Method A cleanup level.