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Eggiman's Hydraulic Gar6g- - 2 - August 25, 2011 <br /> Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Depth to Water <br /> (feet bgs) (feet bgs) <br /> Mar 2011 <br /> MW-1 Nov 01 35-55 39.86 <br /> MW-2 Nov 01 34-54 39.25 <br /> MW-3 Nov 01 35-55 40.14 <br /> MW-4 Jan 04 33-53 40.13 <br /> MW-5 Jan 04 33-53 37.58 <br /> MW-6 Jan 04 33-53 37.59 <br /> MW-7 Jan 04 35-55 38.14 <br /> MW-8 Jul 07 37-57 39.51 <br /> MW-9 Jul 07 35-55 38.40 <br /> MW-10 Jul 07 36-56 3B.13 <br /> MW-11 Jul 07 36-56 38.67 <br /> Petroleum H drocarbon Constituent Concentration <br /> Contaminant Soil m /k Water u /L WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> Mar 2011 <br /> TPH NA NA 3,700 890 5 <br /> TPHd NA NA 5,400 <50 56 <br /> Benzene NA NA 17 0.5 0.15 <br /> Toluene NA NA 18 2 42 <br /> Eth (benzene NA NA 180 38 29 <br /> Xylenes NA NA 470 57 17 <br /> MTBE NA NA 170 41 5 <br /> TBA NA NA 130 23 12/1,200a <br /> 1,2-DCA NA NA 130 98 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 /> Site Description <br /> The Site is located at 1112 East Harding Way in Stockton, California and is an active <br /> maintenance facility. The Site is bounded by North Union Street to the west, East Harding Way <br /> to the north and a residence to the east and south. The surrounding land use is mixed <br /> residential and commercial. <br /> Site History/Assessments <br /> In April 1987, soil contamination was identified during the removal of USTs. To date, 11 <br /> monitoring wells have been installed and monitored regularly. A Site map showing the location <br /> of the former USTs, monitoring wells and groundwater level contours is provided at the end of <br /> this five year summary. <br />