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Van De Pol Enterprises _ 2 _ <br /> August 29, 2011 <br /> . "gradient of 0.004 feet/foot. -r4 � <br /> • Soil Types: The Site is underlain by interbedded and intermixed sand, silt and clay s , <br /> � F <br /> Monitoring Welllnformation <br /> Well Designation Date Installed Screen interval^ Depth to Water �~ <br /> (feet bgs) (feet bgs) <br /> June 2011 <br /> MW-1 Jul 96 30-50 24.81 _ <br /> MW-2 Jul 96 30-50 24.65 <br /> MW,-3 Jul 96 30-50 25.00 <br /> MW-4 Jul 96 30-50 25.15 <br /> MW-'5 Jun 97 25-45 25.43 <br /> MW-6. Jun 97 25-45 26.09 <br /> F MW-7 Jun'97 1 25-45 25.38 " <br /> MW-8 Jun 97 25-45 23.65 <br /> MW-9- Jun 97 25-45 24.91 <br /> MW-10 Jul 98 20-40 25.77 <br /> MW711 Jul 98 20-40 24.83 <br /> MW-12 Jul 98 20-40 25.37 <br /> MW-13A Oct 02 95-100 25.75 <br /> MW-13B _ Oct 02 120-125 25.77 <br /> MW-13C Oct 02 145-150 25.75 <br /> AW-11A Nov 97 39-44 25.03 ' <br /> AW-1 B Nov 97 50-60 25-04 <br /> AW-2A Nov 97 40-45 25.59 <br /> r AW-26 Nov 97 60-70 25.57 <br /> Petroleum H drocarbon Constituent Concentration Water u IL WQOs <br /> Contaminant Soil (mg/ <br /> Maximum Latest Maximum Latest (ug/L) r <br /> * June 2011 <br /> TPH NA NA 170,000 19,000 5 <br /> Benzene NA NA 24,000 X0.5 0.15 <br /> Toluene NA NA 19,000 7.8 42 <br /> Eth `lbenzene NA NA 4,400 740 29 <br /> Xylenes NA NA 21,000 221 17 <br /> MTBE NA NA 180 <1 5 <br /> TBA il NANA 81 <10 1211,200a <br /> 1,2-DCA NA NA 71 <0.5 0.5 <br /> -NA:. Not Analyzed, Not Applicable or Data Not Available <br /> mglkg:i milligrams per kilogram, parts per million <br /> ug/L: -micrograms per liter, parts per billion` <br /> WQOs4 Water Quality Objectives <br /> *`According to GeoTracker, wells <br /> California Department of Public Health Notification Levell Response Level .< �. <br /> r ti.. <br />