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k -A <br /> Y <br /> • - � �y <br /> 1. <br /> Center Street Parts J -2- March 24, 2008 <br /> 'Claim No. 4423 Y 71 <br /> B. Monitoring Well Information u <br /> Well Designation Date Installed - Screen Interval Most Recent DTW <br /> feet b s Oct 07 <br /> MW-1 Jul 99 ;15-351. 25.05 <br /> MW-2 Jul 99 r -15-46 25.56 <br /> MW-3 Jul 99 15-35 25.40 <br /> MW-4 Mar 02 20-40. 25.40 <br /> VW-1 Mar 02 5-25- -. 25.64 r <br /> SP-1 Mar 02 Y 48-50 Dry <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. `MAXIMUKDOCUMENTED CONTAMINANT CONCENTRATIONS <br /> Contaminant Soil m /k DRGs :. Water (ug/L WQOs <br /> Maximum Latest Residential ln'dustrial4 Maximum Latest (ug/L) <br /> (mg/kg) m Ik Oct 07 <br /> TPH-g NA NA NA NA 190,000 . 3,500 5 <br /> TPH-d NA NA. NA NA NA NA 49 <br /> Benzene NA NA 0.64 1.4 20,000 34 0.15 <br /> Toluene . NA NA 520 520 `P 38,000 14 42 <br /> Eth (benzene NA NA 400 400 t 6,400 51 29 <br /> Xylenes NA NA 270 420 35,000 150 17 <br /> MTBE NA NA 32 70 20 <0.5 5 <br /> _f B-A NA NA- `NA '' NA ""' 180 <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 /> TCI= 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 1. <br /> NA Not Analyzed,Not Applicable,or Data Not Available <br /> WQO- Water Quality Objectives s � <br /> V. FREE PRODUCT: none identified . <br /> Vi. SOIL AND GROUNDWATER REMEDIATION, r - <br /> A.- Soil Excavation: unknown volume <br /> ri <br /> B. In-Situ Soil Remediation:'"x, <br /> • METHOD: soil.vapor extration <br /> • DURATION: Nov 03 through Nov.05 <br /> California Environmenta]Protecdnn Agency . <br /> 0 Recycled Paper <br />