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Country Club Food and Fuel -2- May 7, 2008 <br /> Claim No. 14971 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Oct 07 <br /> MW-1 Jul 00 5-25 13.17 <br /> MW-2 Jul 00 5-25 13.35 <br /> MW-3 Jul 00 5-25 12.38 <br /> MW-4 Jul 00 5-25 12.30 <br /> MW-5 Jan 06 5-25 13.50 <br /> MW-6a Aug02 ? 13.00 <br /> MW-6b Aug02 ? 12.89 <br /> MW-7a Aug02 ? 13.10 <br /> MW-7b Aug02 ? 12.98 <br /> MW-8a Apr 05 ? 13.13 <br /> MW-8b Apr 05 ? 13.08 <br /> MW-9a Apr 05 ? 12.58 <br /> MW-9b Apr 05 ? 12.62 <br /> MW-10 Apr 05 ? 12.80 <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) m /k Oct 07 <br /> TPH-g NA NA NA NA 1,100 <50 5 <br /> TPH-d NA NA NA NA <50 <50 49 <br /> Benzene NA NA 0.64 1.4 0.56 <0.5 0.15 <br /> Toluene NA NA 520 520 0.98 <0.5 42 <br /> Eth (benzene NA NA 400 400 0.53 <0.5 29 <br /> Xylenes NA NA 270 420 2.6 <0.6 17 <br /> MTBE NA NA 32 70 1,200 14 5 <br /> TBA NA NA NA NA <200 <10 12 <br /> 1,2-DCA NA NA NA NA <0.5 <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 /> California Environmental Protection Agency <br /> Q0 Recyded Pape,, <br />