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TABLE 17 <br />SOIL ANALYTICAL RESULTS - HCID, NWTPH and BTEX <br />TREATMENT SYSTEM SEDIMENTS <br />Sample HCID NWTPH (mg/kg) BTEX (mg/kg) <br />Identification <br /> Gas Diesel Oit B T E X <br />N-Frac Tank -- 61.6 <51.7 <172 <0.172 <0.345 <0.34~ <1.03 <br />S-Frac Tank/Se - 20 <33.3 <1 1 I <0.1 1 1 <0.222 <0.222 <0.667 <br />Soil Matrix NA 80 500 500 NA NA NA NA <br />Cleanu Level <br />RBCA Tier 1 NA NA NA NA 0.60 790 ~300 500 <br />Volatilization to <br />Outdoors Cleanup <br />Level <br />RBCA Tier 1 NA NA NA NA 20 1~1,000 ~,700 ~3,000 <br />Trench Worker <br />Cleanu Level <br />< = less than <br />-- = Not Anah~zed <br />mg/I:~ = millierams per kilogram <br />NA = Not Applicable <br />HCID = Hydrocarbon fdentitication (Method NWTPH-HC(D) <br />MVTPH = Total petroleum hydrocarbons (Methods NWTPH-Gs and N~Vl PH-Ds) <br />BTE`C = Benzene, Toluene, Ethylbenzene, Xylenes (Method 8021) <br />RBCA = Oregon DEQ Interim Guidance on Risk-f~ased Corrective Action Yor Pe[roleum Releases (April I996) <br />Concentrations in Bold print exceed the appropriate DGQ action Ievel <br />Construction Phase-Remedial Actions Centun West Eneineerine Corporation <br />Courthouse Square 4030G-001-27 <br />November 9. 1999 <br />