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u Stallworth Auto Detail -2- April 13 , 2010 <br /> Claim No . 12235 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Jan 2010 <br /> MW- 1a Jan 06 19-39 29 . 83 <br /> MW- lb Jan 06 29-49 30 . 21 <br /> MW- 1c Jan 06 120- 134 30 .43 <br /> MW- 1d Jan 06 139- 149 30 . 77 <br /> MW-2 Jun 00 29-49 30 . 00 <br /> MW-3 Jun 00 20-40 31 . 37 <br /> MW-4 Jun 00 19-39 30 . 12 <br /> MW-5 Jun 02 18-38 30 . 47 <br /> MW-6 Jun 02 19-39 31 . 12 <br /> MW-7 Jun 07 60-70 31 . 72 <br /> MW-8 Jun 07 59-69 31 . 05 <br /> MW-9 Mar 08 60-70 31 . 00 <br /> MW- 10 Mar 08 60-70 31 . 37 <br /> MW- 11 Mar 08 60-70 32 . 03 <br /> • MTBE THREAT CLASSIFICATION : C <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 (ug/L WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> Jan 2010 <br /> TPH-g NA NA 470, 000 210, 000 5 <br /> TPH-d NA NA 92, 000 21 , 000 56 <br /> Benzene NA NA 50, 000 91800 0. 15 <br /> Toluene NA NA 160 , 000 55 , 000 42 <br /> Eth ( benzene NA NA 1 282000 81900 29 <br /> xylenes NA NA 182, 000 522000 17 <br /> MTBE NA NA 500 < 1 5 <br /> TBA NA NA ND < 10 12 <br /> 112-DCA NA NA 390 110 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 /> WQO Water Quality Objectives <br /> FP Free phase product in site wells <br /> V. FREE PRODUCT: none identified <br /> VI . SOIL AND GROUNDWATER REMEDIATION <br /> California Environmental Protection Agency <br /> P,d Recyc/ed Paper <br />