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Charles Skobrak -2- - April 21, 2011 <br /> Claim No. 1028 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Depth to Water <br /> (feet bgs) (feet bgs) <br /> Dec 2010 <br /> MW-1 Feb 92 55-75 31.78 <br /> MW-2 Feb 92 54-74 31.37 <br /> MW-3 Feb 92 54-74 31.79 <br /> MW-4 Feb 92 45-70 31.90 <br /> MW-5 May 08 ?-46 32.73 <br /> MW-6 May 08 ?-46 31.98 <br /> MW-7 Jul 97 54-74 31.91 <br /> MW-8 May 08 ?-119 31.91 <br /> MW-9 May 08 ?-117 32.00 <br /> WV-2a Jul 97 <br /> VW-2b Jul 97 44-54 - <br /> VW-3 Jul 97 35-55 <br /> VW-4 Jul 97 34-54 <br /> VW-5b Jul 97 26-41 <br /> VW-5c Jul 97 45-55 <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 /> Feb 2011 <br /> TPH-g NA NA 760,0000 83,000 5 <br /> TPH-d NA NA 56,000 18,000 56 <br /> Benzene NA NA 150,000 35,000 0.15 <br /> Toluene NA NA 56,000 4,300 42 <br /> Eth (benzene NA NA 57,000 2,500 1 29 <br /> Xylenes NA NA 218,000 11,200 17 <br /> MTBE NA NA2,600 120 5 <br /> TBA NA NA 37 <10 12 <br /> 1,2-13CA NA NA 1 2,100 240 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 /> V. FREE PRODUCT: none identified <br /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: unknown volume <br /> California En yironmenta/Protection Agency <br /> Paa Recycled Paper <br />