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Eggiman's Hydraulic Garage -2- April 28, 2008 <br /> Claim No. 16475 <br /> B. Monitoring Well Information- <br /> Well <br /> nformationWell Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Jan 08 <br /> MW-1 Nov 01 35-55 40.93 <br /> MW-2 Nov 01 34-54 40.35 <br /> MW-3 Nov 01 35-55 41.24 <br /> MW-4 Jan 04 33-53 41.23 <br /> MW-5 Jan 04 33-53 38.67 <br /> MW-6 Jan 04 33-53 39.00 <br /> MW-7 Jan 04 35-55 39.24 <br /> MW-8 Jul 07 37-57 40.53 <br /> MW-9 Jul 07 35-55 39.50 <br /> MW-10 Jul 07 36-56 39.16 <br /> MW-11 Jul 07 36-56 39.69 <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 PRGs Water (ug/L WQOs <br /> Maximum Latest Residential Industrial Maximum Latest (ug/L) <br /> (mg/kg) (mg/kg) Feb 07 <br /> TPH-g NA NA NA NA 3,700 1,300 5 <br /> TPH-d NA NA NA NA 5,400 2,500 49 <br /> Benzene NA NA 0.64 1.4 17 1.4 0.15 <br /> Toluene NA NA 520 520 17 15 42 <br /> Eth (benzene NA NA 400 400 110 32 29 <br /> Xylenes NA NA 270 420 130 234 17 <br /> MTBE NA NA 32 70 110 58 5 <br /> TBA NA NA NA NA 130 50 12 <br /> 1,2-DCA NA NA NA NA 92 78 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 /> WQO Water Quality Objectives <br /> V. FREE PRODUCT: none identified <br /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: unknown volume <br /> California En vironmental Protection Agency <br /> ORecycled Paper <br />