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Stephen L. Valentine -2- February 8, 2011 <br /> Claim No. 417 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Depth to Water <br /> (feet bgs) (feet bgs) <br /> J u ly 2010 <br /> MW-1 Oct 94 43-70 31.37 <br /> MW-2 Jan 95 43-70 30.91 <br /> MW-3 Jan 95 43-70 31.40 <br /> MW-4 Jul 96 35-55 31.24 <br /> MW-5 Jul 96 35-55 30.97 <br /> MW-6 Jul 96 35-55 30.62 <br /> MW-101 Sep 99 94=97 31:33 <br /> MW-201 Dec 01 35-55 31.82 <br /> MW-7 Mar 04 35-55 30.20 <br /> MW-8 Mar 04 35-55 31.11 <br /> MW-9 Mar 04 35-55 30.69 <br /> MW-107 Mar 04 43-70 30.17 <br /> MW-108 Mar 04 43-70 31.11 <br /> MW-109 Mar 04 43-70 30.71 <br /> MW-207 Mar 04 76-80 30.25 <br /> MW-208 Mar 04 76-80 31.00 <br /> MW-209 Mar 04 76-80 30.70 <br /> MW-307 Jul 07 94-97 30.53 <br /> MW-308 Jul 07 94-97 30.95 <br /> MW-309 Jul 07 94-97 30.68 <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 Water (ug/L WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> Jul 2010 <br /> TPH- NA NA 260,000 .66,100 5 <br /> Benzene NA NA 27,000 4,860 0.15 <br /> Toluene NA NA 34,000 16,100 42 <br /> Eth (benzene NA NA 8,250 2,240 29 <br /> Xylenes NA NA 19,000 11,300 17 <br /> MTBE NA NA 340 <250 5 <br /> TBA NA NA 210 11.1 12 <br /> 1,2-DCA NA NA 78 14.7 0.5 <br /> NA: Not Analyzed, Not Applicable or Data Not Available <br /> mg/kg: milligrams per kilogram, parts per million <br /> ug/L: micrograms per liter, parts per billion <br /> WQOs: Water Quality Objectives <br /> FP Free phase product in site wells <br /> California En vironmental Protection Agency <br /> QJ*Recycled Paper <br />