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T&T Trucking v -2- May 19, 2008 - <br /> Claim No. 10934115089 . <br /> B. Monitoring Well Information <br /> Well Designation Date installed Screen Interval Most Recent DTW <br /> feet b s Nov 07 <br /> MW-1 Aug95 70-90 75.63 <br /> MW-2 Aug95 65-80 76.07 <br /> MW-3 Aug95 65-80 75.74 <br /> MW-4 Aug95 60-80 75.79 <br /> • MTBE THREAT CLASSIFICATION: A <br /> • LAND USE DESIGNATION: commercial <br /> • ESTIMATED WATER QUALITY 08JECTIVES (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 (Se (ug/L) <br /> m A m A <br /> TPH-g NA NA NA NA $,500 <5,000 5 <br /> TPH-d NA . NA NA NA NA NA 49 <br /> Benzene NA NA 0.64 1.4 <2,000 <50 0.15 <br /> Toluene NA NA 520 520 <2,00 <50 29 <br /> Eth (benzene NA NA 400 400 <2,00 <br /> Xylenes NA NA 270 420 <2,00 <50 17 <br /> MTBE NA NA 32 70 87,000 36,000 5 <br /> TBA NA NA NA NA 2,300 9.5 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 /> PBGs 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: unknown volume <br /> B. In-Situ Soil/ Groundwater Remediation: none conducted to date, soil vapor <br /> extraction and air sparging are pending <br /> Callfornla Environmental Protection Agency <br /> �a Recyc%d Paper <br />