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G Raymond Farmer -2- May 5 , 2009 <br /> Claim No . 11910 <br /> B . Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> (feet bgs) (Sep 08 <br /> MW- 1 Jul 97 2545 22 . 56 <br /> MW-2 Jul 97 25-45 23 . 35 <br /> MW-3 Jul 97 25-45 23 . 96 <br /> MW4 Mar 98 2141 21 . 81 <br /> MW-5 Mar 98 21 -41 23 . 63 <br /> MW-6 Mar 98 21 -41 22 . 06 <br /> MW-7 Mar 98 20-40 25. 38 <br /> MW-8 Dec 01 2040 22 . 58 <br /> MW-9 Dec 01 2040 25 . 03 <br /> MW' 10 Dec 01 20-40 25 . 82 <br /> CW Dec 97 40-60 23 . 86 <br /> VW-1 Jun 04 10-30 22 . 18 <br /> VW-2 Jun 04 19-34 21 . 86 <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 ESLs Water (ug/L WQOS <br /> Maximum Latest Shallow Industrial2 Maximum Latest (ug/L) <br /> Soil (Sep 08) <br /> Dermal <br /> Residential m /k (mg/kg) <br /> TPH-g NA NA 83 450 1682000 42, 000 5 <br /> TPH-d NA NA 83 450 NA NA 56 <br /> Benzene NA NA 0. 044 0.27 11 , 000 790 0. 15 <br /> Toluene NA NA 2. 9 1 210 36, 000 430 42 <br /> Eth (benzene NA NA 2.3 5. 0 61900 23800 29 <br /> Xylenes NA NA 2.3 100 361000 81500 17 <br /> MTBE NA NA 0. 023 65 120 1 . 5 1 5 <br /> TBA NA NA 0. 075 320,000 24 24 12 <br /> 112-DCA NA NA 0. 0045 0 .48 63 NA 0.4 <br /> Lead NA NA 200 750 ND NA 15 <br /> PCE NA NA 0.37 0.95 NA NA 0.06 <br /> TCE NA NA 0.46 4. 1 NA NA 0. 8 <br /> 1 Environmental Screening Levels (ESLs) Shallow Soil <3m, Groundwater is source of Drinking Water. <br /> 2 ESLs, Shallow Soil Screening Levels, Groundwater not source of Drinking Water, Commercial Use, Direct Exposure, <br /> Worker <br /> NA Not Analyzed, Not Applicable, or Data Not Available <br /> Woo Water Quality Objectives <br /> FP Free phase product in site wells <br /> California Environmental Protection Agency <br /> Zd Recycled Paper <br />