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Jerry and Marleta Cast -3- May 19, 2008 <br /> Claim No. 12325 <br /> • MTBE THREAT CLASSIFICATION: B <br /> • LAND USE DESIGNATION: residential and commercial <br /> • ESTIMATED WATER QUALITY OBJECTIVES (WQO'S) FOR SITE: Per the <br /> Water Quality Control Plan (Basin Plan) for the Sacramento River Basin and the <br /> San Joaquin River Basin (Fourth Edition). <br /> IV. MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br /> Contaminant Soil m /k PRGs Water (ug/L WQOs <br /> Maximum Latest Residential Industrial Maximum Latest <br /> (mg/kg) (mg/kg) Dec 07 <br /> TPH- NA NA NA NA 200,000 140,000 5 <br /> TPH-d NA NA NA NA NA NA 49 <br /> Benzene NA NA 0.64 1.4 11,000 1,100 0.15 <br /> Toluene NA NA 520 520 34,000 420 42 <br /> Eth (benzene NA NA 400 400 20,000 3,500 29 <br /> Xylenes NA NA 270 420 26,000 12,500 17 <br /> MTBE NA NA 32 70 2,900 58 5 <br /> TBA NA NA NA NA 320 <10 12 <br /> 112-DCA NA NA NA NA 220 41 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 NA NA 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: unknown volume <br /> B. In-Situ Soil/ Groundwater Remediation: none conducted to date, Final <br /> Remediation Plan requested by LOP <br /> California Environmental Protecdon Agency <br /> Cf Recycled Paper <br />