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Food and Liquor -2- May 16, 2008 <br /> Claim No. 17179 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Mar 08 <br /> MW-1 Mar 88 5-25 27.37 <br /> MW-2 Mar 88 6-26 25.65 <br /> MW-3 Mar 88 6-26 27.67 <br /> MW-4 Apr 88 5-25 24.32 <br /> MW-5 Sep 95 5-15 15.25 <br /> MW-6 Sep 95 1 5-15 15.01 <br /> MW-7 Sep 95 5-15 15.20 <br /> MW-8 Sep 95 5-20 19.50 <br /> • MTBE THREAT CLASSIFICATION: C <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 (ug/L) <br /> (mg/kg) (mg/kg) Mar 08 <br /> TPH-g NA NA NA NA 45,000 210 5 <br /> TPH-d NA NA NA NA NA NA 49 <br /> Benzene NA NA 0.64 1.4 3,100 <0.5 0.15 <br /> Toluene NA NA 520 520 2,600 <0.5 42 <br /> Eth (benzene NA NA 400 400 440 <0.5 29 <br /> Xylenes NA NA 270 420 7,500 <0.5 17 <br /> MTBE NA NA 32 70 1,500_ 97 5 <br /> TBA NA NA NA NA 360 320 12 <br /> 1,2-DCA NA NA NA NA <5 <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 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 /> WQO 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 identified <br /> California Enviroameatal Protecdon Agency <br /> P..1 Recycled Paper <br />