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i Raymond Farmer -2- April 28 2008 - <br /> Claim No . 11910 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> (feet b s) (Dec 07 <br /> MW- 1 Jul 97 2545 22 . 60 <br /> MW-2 Jul 97 25-45 23 . 61 <br /> MW-3 Jul 97 25-45 24 . 14 <br /> MW-4 Mar 98 21 -41 22 .45 <br /> MW-5 Mar 98 21 -41 23 . 81 <br /> MW-6 Mar 98 2141 22 . 77 <br /> MW-7 Mar 98 20-40 25 . 54 <br /> MW-8 Dec 01 20-40 22 . 91 <br /> MW-9 Dec 01 20-40 25 . 23 <br /> MW- 10 Dec 01 20-40 25 . 87 <br /> CW Dec 97 40-60 29 . 11 <br /> VW- 1 Jun 04 10-30 22 . 81 <br /> VW-2 Jun 04 19-34 22 . 12 <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 Contra) 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) Dec 07 <br /> TPH-g NA NA NA NA 168, 000 38 000 5 <br /> TPH-d NA NA NA NA NA NA 49 <br /> Benzene NA NA 0.64 1 .4 110000 180 0. 15 <br /> Toluene NA NA 520 520 363000 9 42 <br /> Eth ( benzene NA NA 400 400 6, 900 11300 29 <br /> Xylenes NA NA 270 420 36, 000 1 3t740 17 <br /> MTBE NA NA 32 70 120 1 .5 5 <br /> TBA NA NA NA NA 21 11 12 <br /> 112-DCA NA NA NA NA 63 NA 0.5 <br /> Lead NA NA 400 800 ND 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 /> California Environmental Protection Agency <br /> • �.CI' RecycledPaper • <br />