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Olympian Oil -2- March 14, 2008 <br /> Claim No. 12820 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Nov 07 <br /> MW-1 Aug99 ?-29 24.36 <br /> MW-2 Aug99 ?-29 24.60 <br /> MW-3 Aug99 ?-29 22.90 <br /> MW-4 Aug99 ?-29 24.71 <br /> MW-5 Aug99 ?-29 23.29 <br /> MW-6 Mar 98 ?-29 23.45 <br /> MW-7 Mar 98 ?-30 24.59 <br /> MW-8 Mar 98 ?-29 24.14 <br /> MW-9 May 03 ?-30 _ 23.30 <br /> MW-10 Aug05 ?-36 23.42 <br /> EW-1 Jun 02 ? Dry <br /> DW-1 Jan 00 ? 27.50 <br /> • MTBE THREAT CLASSIFICATION: D <br /> • LAND USE DESIGNATION: 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) Nov 07 <br /> TPH-g NA NA NA NA 420,000 20,000 5 <br /> TPH-d NA NA NA NA 9,600,000 130,000 49 <br /> Benzene NA NA 0.64 1.4 820 0.97 0.15 <br /> Toluer e NA NA 520 520 31 1.2 42 <br /> Eth Ibanzene NA NA 400 400 380 <0.5 29 <br /> X IenE!s NA NA 270 420 790 0.51 17 <br /> MTBE NA NA 32 70 5,500 190 5 <br /> TBA NA NA NA NA 620 1,700 12 <br /> 1,2-D(,A NA NA NA NA ND NA 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 /> California Environmental Protection Agency <br /> .oZJ'Recv led Paper <br />