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Marci's Diesel Service -2- March 19, 2008 r <br /> Claim No. 7709 <br /> B. Monitorin Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Nov 07 <br /> MW-1 Aug00 49-64 54.74 <br /> MW-2 Aug00 46-61 54.35 <br /> MW-3 Aug00 44-59 54.27 <br /> MW-4 Aug00 35-55 54.62 <br /> MW-5 Aug00 30-45 54.76 <br /> MW-6 Aug00 30-45 54.15 <br /> MW-7 Jun 02 31-66 55.65 <br /> MW-8 Jun 02 31-46 54.24 <br /> MW-104 Jun 02 66-71 54.95 <br /> MW-105 Jun 02 66-71 54.61 <br /> MW-106 Jun 02 66-71 54.12 <br /> • MTBE THREAT CLASSIFICATION: X <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/k (mg/kg) Nov 07 <br /> TPH- NA NA NA NA 1,000 300 5 <br /> TPH-d NA NA NA NA 99,000 1,900 49 <br /> Benzene NA NA 0.64 1.4 4.9 1.5 0.15 <br /> Toluene NA NA 520 520 2.9 <0.5 42 <br /> Eth (benzene NA NA 400 400 7 <0.5 29 <br /> _Xylenes NA NA 270 420 14 <0.5 17 <br /> MTBE NA NA 32 70 5.5 NA 5 <br /> TBA NA NA NA NA NA NA 12 <br /> 1,2-DCA NA NA NA NA NA NA 0.5 <br /> Lead NA NA 400 800 NA NA 15 <br /> PCE NA NA 17 130 NA NA 0.06 <br /> TC E NA NA 0.11 110NA 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: sheen in MW-4, MW-5, and MW-7. <br /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: unknown volume <br /> Cali}orMH EnWORmental Protection Agency <br /> AZo'Recycled Pp,.- <br />