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George's Service • - 2 - • January 30, 2012 <br /> • Groundwater Flow Direction: Predominately to the north with an average gradient of <br /> 0.002 feet/foot (ft/ft) (June 2009) <br /> • Soil Types: The Site is underlain by interbedded and intermixed gravel, sand, silt and <br /> clay <br /> Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Depth to Water <br /> (feet bgs) (feet bgs) <br /> Zone 1 (Apr 2011 <br /> MW-1 Apr 95 5-20 12.94 <br /> MW-2 Apr 95 5-20 13.15 <br /> MW-3 Apr 95 5-20 13.94 <br /> MW-4 Apr 97 7-22 13.53 <br /> MW-5 Apr 97 7-22 12.75 <br /> MW-6 Apr 97 7-22 12.67 <br /> MW-7 Apr 97 7-22 12.78 <br /> MW-8 Apr 97 32-35 12.61 <br /> Zone 2 <br /> MW-2X Oct 03 32-35 13.00 <br /> MW-101 Sep 03 32-35 13.35 <br /> MW-105 Jan 98 32-37 12.59 <br /> MW-106 Oct 03 32-37 13.20 <br /> Zone 3 <br /> MW-102 Apr 97 32-37 12.55 <br /> MW-107 Jul 98 47-50 12.93 <br /> MW-201 Se 03 45 48 13.46 <br /> MW-202 Jul 98 79-82 13.05 <br /> Petroleum H drocarbon Constituent Concentration <br /> Contaminant Soil m /k Water u /L IvvQ(L,)s <br /> Maximum Latest Maximum Latest <br /> A r2011 <br /> TPH NA NA 450,000 25,000Benzene NA NA 3,930 400Toluene NANA 12,500 460Eth (benzene NA NA 5,980 1,100Xylenes NA NA 28,300 2,700MTBE NA NA 232 41TBA NA NA NA <100 1,2-DCA NA NA 218 60 <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 /> *According to GeoTracker,wells <br /> a California Department of Public Health Notification Level/Response Level <br />