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Quick-n-Save #2 - 2 - August 30, 2011 <br /> • Groundwater Flow Direction: Variable, predominately east, northeast in Jan 2011 with <br /> an average gradient of 0.001 feet/foot <br /> • Soil Types: The Site is underlain by interbedded and intermixed sand, silt and clay <br /> • Maximum Depth Sampled: 50 feet bgs <br /> Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Depth to Water <br /> (feet bgs) (feet bgs) <br /> Jan 2011) <br /> MW1 Mar 04 25-45 23.87 <br /> MW2 Mar 04 25-45 23.60 <br /> MW3 _Mar 04 25-45 24.38* <br /> EW1 Aug05 30-50 23.92 <br /> EW2 Jan 11 30-50 23.76 <br /> VW11 Oct 08 15-30 24.38 <br /> VW2 Oct 08 15-30 23.82 <br /> VW3 Oct 08 15-30 23.64 <br /> VW4 Oct 08 15-30 23.96 <br /> Sheen noted <br /> Petroleum H drocarbon Constituent Concentration <br /> Contaminant Soil (mg/kg) Water (ug/L) WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> _ * Jan 2011 <br /> TPHg NA NA 3,800,000 33,000 5 <br /> Benzene NA NA 120,000 5,900 0.15 <br /> Toluene NA NA 370,000 650 42 <br /> Eth (benzene NA NA 460,000 950 29 <br /> Xylenes NA NA 2,400,000 2,290 17 <br /> MTBE NA NA 450,000 36,000 5 <br /> TBA NA _ NA 110,000 41,000 12/1,200a <br /> 1,2-DCA NA NA 460 <50 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 /> According to GeoTracker, wells <br /> California Department of Public Health Notification Level/Response Level <br /> Site Description <br /> The Site is located in south central Stockton, California and is an active retail gasoline station <br /> and mini market with two fuel islands. The Site is bounded by EI Dorado Street to the east, <br /> Delhi Street to the north and a residential community to the west and south. The surrounding <br /> land use is mixed residential and commercial. <br />