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Gillies Trucking • -3- • May 21 , 2008 <br /> Claim No. 1129 <br /> IV. MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br /> Contaminant Soil m /k PRGs Water (u/L WQOs <br /> Maximum Latest Residential Industrial Maximum Latest (ug/L) <br /> m /k m /k Mar 08 <br /> TPH- NA NA NA NA 1,800 290 5 <br /> TPH-d NA NA NA NA 190,000 160,000 49 <br /> Benzene NA NA 0.64 1.4 16 2.7 0.15 <br /> Toluene NA NA 520 520 15 15 42 <br /> Eth (benzene NA NA 4020 <br /> 10 0.64 29 <br /> X lenes NA NA 270 420 11 <0.5 17 <br /> MTBE NA NA 32 1 0 1 0 0.93 5 <br /> TBA NA NA NA NA I 5.5 6.3 12 <br /> 1,2-DCA NA NA NA NA ND <0.5 0.5 <br /> Lead NA NA 400 800 NA NA 15 <br /> PCE NA NA 17 130 NA NA 0.06 <br /> TCE NA NA 0.11 110 1 0.8 <br /> PRGs USEPA Region 9 Preliminary Remediation Goals <br /> MCL Maximum Contaminant Levels <br /> AL Action Level <br /> NA Not Analyzed, Not Applicable,or Data Not Available <br /> woo Water Quality objectives <br /> V. FREE PRODUCT: none identified <br /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: several thousand cubic yards of contaminated soil were <br /> excavated in Jul 90. <br /> B. In-Situ Soil/ Groundwater Remediation: none identified <br /> California Environmental Protection Agency <br /> Q. Recycled Paper <br />