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Shell - 2 - ' March 29, 2012 <br /> Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Depth to Water <br /> (feet bgs) (feet bgs) <br /> Oct 2011 <br /> MW-1 Dec 89 ?-40 15.10 <br /> MW-2 Dec 89 ?-40 15.82 <br /> MW-3 Dec 89 ?-39 16.24 <br /> MW-4 Dec 89 ?-40 15.42 <br /> MW-5 Jan 90 ?-40 16.16 <br /> MW-6 Jan 90 ?-40 16.48 <br /> MW-7 Jan 90 ?-40 15.40 <br /> MW-8 Mar 90 ?-39 16.18 <br /> MW-9 Mar 90 ?-45 16.44 <br /> MW-10 Aug91 ?-47 15.98 <br /> MW-11 Apr 08 ?-34 17.12 <br /> MW-13-50 Apr 08 ?-50 16.12 <br /> MW-13-77 Apr 08 ?-77 16.06 <br /> MW-14-50 Apr 08 ?-50 15.78 <br /> MW-14-77 Apr 08 ?-78 15.88 <br /> MW-15-77 Apr 08 ?-77 16.04 <br /> MW-16-50 Jul 07 ?-50 16.82* <br /> MW-16-77 Jul 07 ?-77 17.04 <br /> MW-16-90 Jul 07 ?-98 18.55 <br /> MW-17-50 Jul 07 ?-52 1 17.14 <br /> *Free product in site well <br /> Petroleum H drocarbon Constituent Concentration <br /> Contaminant Soil m /k Water (ug/L WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> * Oct 2011 <br /> TPHg NA NA 4,700,000 21,000 5 <br /> Benzene NA NA 2,300 200 0.15 <br /> Toluene NA NA 5,200 12 42 <br /> Eth ;benzene NA NA 1,700 46 29 <br /> Xyle~les NA NA 5,700 42 17 <br /> MTBE NA NA 23,000 84 5 <br /> TBA NA NA 7,300 400 12/1,200- <br /> 1,2-DCA NA NA 81 <0.5 0.5 <br /> NA: Nor 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 />