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Teichert and Son -2- J March 24, 2008 " <br /> Claim No. 51 <br /> • SOIL TYPES: interbedded and intermixed sand, silt, and clay, predominantly fine <br /> grained <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Dec 07 <br /> MW-1 Oct 01 ?-43 Dry <br /> DiW:S3 7a tzMW-13 -2s;`"s Oct 01 -15-90 ?-64 45.26 <br /> MW-14 Oct 01 ss_ 70c) ?-77 45.30 <br /> MW-15 Dec 07 ?-73 45.20 <br /> MW-16 Dec 07 ?-73 44.28 <br /> MW-17 Dec 07 ?-74 44.27 <br /> MW-18 Dec 07 ?-90 43.96 <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 u /L , WQOs <br /> Maximum Latest Residential Industrial Maximum Latest (uglL) <br /> (mg/kg) m Ik Dec 07 <br /> TPH-g NA NA NA NA 11,000 3,000 5 <br /> TPH-d NA NA NA NA NA NA 49 <br /> Benzene NA NA 0.64 1.4 68 3.6 0.15 <br /> Toluene NA NA 520 520 74 7.1 42 <br /> Eth (benzene NA NA 400 400 160 25 29 <br /> Xylenes NA NA 270 4267 580 93 17 <br /> MTBE NA NA 32 70 13 0.77 5 <br /> TBA NA NA NA NA 65 ND 12 <br /> 1,2-DCA NA NA NA NA 63 63 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 /> PBGs 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 excavated to a depth of 30 feet <br /> California En wroamental Protection Agency <br /> Z4'Recyded Paper <br />