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Canepa's Car Wash - 2 - January 23, 2012 <br /> • Groundwater Flow Direction: Predominately to the northeast with an average gradient of <br /> 0.004 feet/foot (ft/ft) <br /> • Soil Types: The Site is underlain by interbedded and intermixed sand, silt and clay <br /> Monitoring Well Information _ <br /> Well Designation Date Installed Screen Interval Depth to Water <br /> (feet bgs) (feet bgs) <br /> (Apr 2011 <br /> MW-1 Sep 94 45-65 22.64 <br /> MW-2 Sep 94 45-65 23.55 <br /> MW-3 Sep 94 45-65 24.02 <br /> MW-4 Sep 94 40-60 22.22 <br /> MW-5 Sep 94 40-60 23.76 <br /> MW-6 Sep 94 40-60 23.93 <br /> MW-7 Sep 94 40-60 23.06 <br /> MW-8 Jul 09 25-45 23.72 <br /> MW-9 Jul 09 75-85 24.08 <br /> MW-10 Jul 09 100-110 24.40 <br /> MW-11 Jul 09 75-85 24.40 <br /> MW-12 Jul 09 100-110 24.46 <br /> MW-13 Aug09 25-45 23.47 <br /> MW-14 Aug09 78-88 24.01 <br /> MW-15 Sep 09 25-45 24.75 _ <br /> MW-16 Sep 09 75-85 25.00 <br /> MW-17 Sep 09 100-110 25.16 <br /> MW-18 Dec 10 15-45 23.82 <br /> MW-19 Dec 10 1 15-45 23.61 <br /> Petroleum H drocarbon Constituent Concentration <br /> Contaminant Soil (mg/kg) Water u /L WQns <br /> Maximum Latest Maximum Latest (ug/L) <br /> Dec 2011 <br /> TPHg NA NA 300,000 250,000 5 <br /> Benzene NA NA 50,000 39,000 0.15 <br /> Toluene NA NA 71,000 64,000 42 <br /> Eth (benzene NA NA 13,000 13,000 29 <br /> Xylenes NA NA 61,000 61.000 17 <br /> MTBE NA NA 32,000 NA 5 <br /> TBA NA NA NA NA 12/1,200a <br /> 1,2-DCA NA NA 350 NA 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 /> a California Department of Public Health Notification Level/Response Level <br />