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'I <br /> RMB Garage -2- May 19 , 2008 <br /> Claim No . 16768 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Dec 07 <br /> MW- 1 Sep 03 2040 24 . 60 <br /> MW-2 Sep 03 20-40 24 .66 <br /> MW-3 Sep 03 2040 23 . 95 <br /> MW-4 Sep 03 2040 24. 74 <br />!I MW-5 Nov 05 2040 24 . 83 <br /> MW-6 Nov 05 20-40 24 . 07 <br /> MW-7 Feb 05 20-40 . 25 . 31 <br /> MW-8 Dec 05 2040 24 . 39 <br /> MW-9 Dec 05 2040 24 . 82 <br /> MW- 10 Mar 07 20-40 24 . 10 <br /> MW- 11 Mar 07 2040 25 . 11 <br /> MW- 12 Mar 07 88-98 25 .27 <br /> MW- 13 Mar 07 20-40 25 .66 <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 PRG_ s Water (ug/L WQOs <br /> Maximum Latest Residential Industrial Maximum Latest (ug/L) <br /> (mg/kg) (mg/kg) Dec 07 <br /> TPH-g NA . NA NA NA 5809000 2801000 5 <br /> TPH-d NA NA NA NA 95, 000 38, 000 49 <br /> Benzene NA NA 0.64 1 .4 30. 0000. 34 000 0. 15 <br /> Toluene NA NA 520 520 430,000 381000 42 <br /> Eth (benzene NA NA 400 400 32,000 51000 29 <br /> Xylenes NA NA 270 420 136, 000 231000 17 <br /> MTBE NA NA 32 1 70 <10 <1 . 5 <br /> TBA NA NA NA A <100 < 10 12 <br /> 112-DCA NA NA g400b8OO <br /> A 1.0100 260 0.5 <br /> Lead NA NA NA NA 15 <br /> PCE NA NA 0 NA NA 0.06 <br /> TCE NA NA 0 NA NA 0. 8 <br /> PRGs USEPA Region 9 Preliminary Remediation Goals - <br /> - <br /> MCL . Maximum Contaminant Levels <br /> AL Action Level <br /> NA Not Analyzed, Not Applicable, or Data Not Available _ <br /> WQO Water Quality Objectives <br /> V. FREE PRODUCT: none identified <br /> Via SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation : unknown volume <br /> California Environmental Protecdorr Agency <br /> - - Ca Recycled Psper - <br />