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March 1fi, 2010 t <br /> Center Street Parts -2- <br /> Claim No. 4423 <br /> B. Monitorin Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Oct 09 <br /> MW-1 Jul 99 15-35 24.48 <br /> MW-2 Jul 99 15-46 24.90 <br /> MW-3 Jul 99 15-35 24.79 <br /> MW-4 Mar 02 20-40 24.95 <br /> MW-5 Apr 08 27-37 24.86 <br /> VW-1 Mar 02 5-25 - <br /> SP-1 Mar 02 48-50 - <br /> MW-2A May 08 45-55 24.80 <br /> MVV-3A Apr 08 48-58 24.93 <br /> MW-5A Apr 08 44-49 1 25.12 <br /> • MTBE THREAT CLASSIFICATION: X <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 /kg) Water (ug/L WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> Oct 09 <br /> TPH NA NA 190,000 2,600 5 <br /> TPH-d NA NA NA NA 56 <br /> Benzene NA NA 20,000 200 0.15 <br /> Toluene NA NA 38,000 7 42 <br /> Eth lbenzene NA NA 6,400 200 29 <br /> Xylenes; NA NA 35,000 36 17 <br /> MTBE NA NA 20 NA 5 <br /> TBA NA NA 180 NA 12 <br /> 1,2-DCA NA NA NA NA 0.5 <br /> Lead NA NA NA NA 15 <br /> PCE I NA NA NA NA 0.06 <br /> TCE I NA NA NA I NA 1 .8 <br /> NA Not Analyzed,Not Applicable,or Data Not Available <br /> WOO Water Quality Objectives <br /> FP Free phase product in site wells <br /> V. FREE PRODUCT: none identified <br /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: unknown volume <br /> B. In-Situ Soil Remediation: <br /> METHOD: soil vapor extraction <br /> • DURATION: Nov 03 through,Nov 05 <br /> OdWorLds ERmwymea&1 Protecdoa Agmcy <br /> ORecyded Paper <br />