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JM Equipment Co. - 2 - April 2012 <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 /> Dec 2011 <br /> MW-1 Apr 99 ?-38 - <br /> MW-2 Apr 99 ?-38 - <br /> MW-3 Jun 00 15-35 - <br /> MW-4 Apr 99 15-35 <br /> MW-5 Apr 99 15-35 13:00 <br /> MW-6 Apr 99 15-35 12.99 <br /> MW-7 Jun 01 10-30 - <br /> MW-8 Apr 99 15-35 13.55 <br /> MW-9 Apr 99 15-35 13.19 <br /> MW-10 Jun 01 11-30 - <br /> MW-109 Jun 01 75-80 - <br /> OW-1 Jun 11 15-25 12.90 <br /> OW-2 Jun 11 15-25 12.94 <br /> OW-3 Jun 11 15-25 13.32 <br /> Petroleum H drocarbon Constituent Concentration <br /> Contaminant Soil m /k Water u /L WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> Dec 2011 <br /> TPHg NA NA 162,000 66,000 5 <br /> Benzene NA NA 31,000 18,000 0.15 <br /> Toluene NA NA 14,000 3,000 42 <br /> Eth (benzene NA NA 11,800 2,600 29 <br /> Xylenes NA NA 19,000 8,200 17 <br /> MTBE NA NA 1,000 150 5 <br /> TBA NA NA NA NA 12/1,200 <br /> 1,2-DCA NA NA NA 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 /> a According to GeoTracker,wells <br /> California Department of Public Health Notification Level/Response Level <br /> Site Description <br /> The Site is located at 1245 West Equipment Way in Stockton, California. The Site is bounded <br /> by businesses to the west, north, and east and West Charter Way to the south. The <br /> surrounding land use is commercial. <br /> Site History/Assessments <br /> In July 1996, soil contamination was identified by an environmental investigation. To date, 14 <br /> monitoring wells have been installed and monitored regularly. A Site map showing the location <br />