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Floyd Barnes -2- April 28 , 2008 <br /> Claim No . 11828 <br /> I <br /> IIS <br /> I' B. Monitoring Well Information <br /> i' Well Designation Date Installed Screen Interval Most Recent DTW <br /> (feet bgs) (Mar 08 <br /> MW- 1 Sep 97 6-26 10 . 03 . <br /> li MW-2 Sep 97 6-26 9 .47 <br /> MW-3 Sep 97 6-26 9 . 98 <br /> MW-4 Jan 99 5-19 9 .69 <br />� MW-5 Jan 99 5-20 12 .03 <br /> MW-6 Jan 99 5-28 10. 29 <br /> hw MW-7 Mar 00 5-25 10 . 61 <br /> r <br /> 4 MW-8 Mar 00 5-25 11 . 87 <br /> • MTBE THREAT CLASSIFICATION : N <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 />!I San Joaquin River Basin (Fourth Edition) . <br />{ <br />? IV. MAXIMUM DOCUMENTED- CONTAMINANT CONCENTRATIONS <br /> i 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 /> I <br /> TPH-g NA NA NA NA 36,000 540 5 <br /> TPH-d NA NA NA NA 300 NA 49 <br /> Benzene NA NA 0.64 1 .4 41100 0. 54 0. 15 <br /> Toluene NA NA 520 520 51300 <0.5 42 <br /> -Eth (benzene- NA - NA 4 - 400 640-- 1 - - <0-,5 - - 29 - - - <br /> o <br /> Xylenes NA NA 270 420 41200 <0.5 17 <br /> MTBE NA NA 32 70 280 0. 53 F5 <br /> TBA NA NA NA NA NA NA 12 <br /> 112-DCA NA NA NA NA ND <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 /> WOO 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 Remediation : none identified <br /> California EQvironmenta/Protection Agency <br /> �.a RecydedPaper <br />