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w Floyd Barnes -2- May 10 , 2010 <br /> Claim No . 11828 <br /> B . Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Jan 2010) <br /> MW- 1 Sep 97 6-26 9 . 04 <br /> MW-2 Sep 97 6-26 9 .26 <br /> MW-3 Sep 97 6-26 9 . 22 <br /> MW-4 Jan 99 5- 19 8 . 85 <br /> MW-5b Jan 99 5-20 9 .44 <br /> MW-6 Jan 99 5-28 9 . 39 <br /> MW-7 Mar 00 5-25 10 .43 <br /> MW-8 Mar 00 5-25 11 . 12 <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 /> San Joaquin River Basin (Fourth Edition) . <br /> IV. MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br /> Contaminant Soil m /k Water u /L WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> Jan 2010 <br /> TPH- NA NA 36, 000 28 ,00.0 5 <br /> TPH-d NA NA 300 NA 56 <br /> Benzene NA NA 4 , 100 41000 0 . 15 <br /> Toluene NA NA 5 ;300 790 42 <br /> Eth (benzene NA NA 1 , 900 11900 29 <br /> Xylenes NA NA 4 ,200 21500 17 <br /> MTBE NA NA 280 <0. 5 5 <br /> TBA NA NA NA <5 12 <br /> 1 ,2-DCA NA NA ND NA 0.4 <br /> Lead NA NA NA NA 15 <br /> PCE NA NA NA NA 0 .06 <br /> TCE NA NA NA NA 0. 8 <br /> NA Not Analyzed, Not Applicable, or Data Not Available <br /> WOO Water Quality Objectives <br /> FP Free phase product in site wells <br /> V. FREE PRODUCT: none identified <br /> VI . SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation : unknown volume <br /> B . In -Situ Soil/ Groundwater Remediation : <br /> • METHOD 1 : dual phase extraction pilot test, with air sparging <br /> DURATION : Feb . 2002 <br /> California Environmental Protection Agency <br /> Z4' Recycled Paper <br />