Laserfiche WebLink
West Clay Properties -3- May 7, 2009 <br /> Claim No. 8542 <br /> IV. MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br /> Contaminant Soil m /k ESLs Water (ug/L WQOs <br /> Maximum Latest Shallow 2 Maximum Latest (ug/L) <br /> Soil' Industrial (Dec 08) <br /> Residential Dermal <br /> (mg/kg) (mg/k9) <br /> TPH-g NA NA 83 450 86,000 19,000 5 <br /> TPH-d NA NA 83 450 29,000 3,300 56 <br /> Benzene NA NA 0.044 0.27 8,300 4,100 0.15 <br /> Toluene NA NA 2.9 210 10,400 110 42 <br /> Eth (benzene NA NA 2.3 5.0 3,200 900 29 <br /> Xylenes NA NA 2.3 100 4,900 1,550 17 <br /> MTBE NA NA 0.023 65 590 <1 5 <br /> TBA NA NA 0.075 320,000 480 <10 12 <br /> 1,2-DCA NA NA 0.0045 0.48 110 13 0.4 <br /> Lead NA NA 200 750 NA NA 15 <br /> PCE NA NA 0.37 0.95 NA NA 0.06 <br /> TCE NA NA 0.46 4.1 NA NA 0.8 <br /> 1 Environmental Screening Levels(ESLs)Shallow Soil<3m, Groundwater is source of Drinking Water. <br /> 2 ESLs,Shallow Soil Screening Levels, Groundwater not source of Drinking Water, Commercial Use, Direct Exposure, <br /> Worker <br /> NA Not Analyzed, Not Applicable, or Data Not Available <br /> WQO Water Quality Objectives <br /> FP Free phase product in site wells <br /> V. FREE PRODUCT: none identified <br /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: approximately 550 cubic yards were excavated in Oct 93 and <br /> 340 cubic yards were excavated in Dec 03. <br /> B. In-Situ Soil Remediation: none identified <br /> C. Groundwater Remediation: <br /> • METHOD: ozone sparging <br /> • DURATION: Nov 07 through present <br /> California Environmental Protection Agency, <br /> 01 1 Recvded Paper <br />