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PS Marina 's 5 -2- March 26 , 2008 <br /> Claim 3668 <br /> B . Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> (feet bgs) (Dec 07 <br /> MW- 1 Apr 91 ?- 18 2 . 13 <br /> MW-2 Apr 91 ?- 16 3 . 54 <br /> MW-3 Apr 91 ?- 16 8 . 15 <br /> MW-4R Aug95 ?- 18 3 . 74 <br /> MW-5 Apr 91 ?- 16 4 . 96 <br /> MW-6 Sep 93 1 ?- 17 5 . 62 <br /> MW-7 Sep 91 1 ?-30 10 . 73 <br /> • MTBE THREAT CLASSIFICATION : A <br /> LAND USE DESIGNATION : commercial/ agricultural <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 PRGs Water (u/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 91800 100 5 <br /> TPH-d NA NA NA NA NA <50 49 <br /> Benzene NA NA 0.64 1 .4 230 <0. 5 0. 15 <br /> Toluene NA NA 520 520 6. 2 <0. 5 42 <br /> Eth ( benzene NA NA 400 400 36 <0 . 5 29 <br /> Xylenes NA NA 270 420 87 < 1 17 <br /> MTBE NA NA 32 70 150 , 000 61 5 <br /> TBA NA NA NA NA 67 , 000 435000 12 <br /> 1 ,2-DCA NA NA NA NA NA NA 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 : 40 cubic yards of contaminated soil <br /> B . In -Situ Soil/ Groundwater Remediation : CAP is being prepared , no <br /> remediation identified <br /> i <br /> Cadforma Environmental Protection Agency <br /> Ci RecyMedPaper <br />