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I <br /> f�I <br /> TABLE 3. Groundwater Monitoring Well Data For March 1992 <br /> Event, 595 East 11th Street, Tracy, California <br /> I <br /> groundwater Monitoring Well <br /> MW-1 MW-2 MW-3 <br /> Total Depth t)* <br /> 03/12/92 16.45 14.55 16.21 <br /> 03/19/92 16.52 14.62 16.28 <br /> i <br /> Depth-to-Water (ft)* <br /> 03/12/92 8.72 8.10 7.78 <br /> 03/19/92 8.54 8.14 7.88 <br /> Elevation of Top of <br /> i Well Casing (ft)** 48.06 47.84 47.94 <br /> Relative Groundwater <br /> Surface Elevation (ft)*** <br /> 03/12/92 39.34 39.74 40.16 <br /> 03/19/92 39.52 39 70 40.06 <br />`i Laboratory Analyses Results, March 19, 1992 Sampling: <br /> MW-1 MW-2 MW-3 <br /> TPHg (ppm) <0.05 14. 1 2.6 <br /> Benzene (ppm) 0.056, 0.239 0.234 <br /> Toluene (ppm) <0.0005 0.0053 <0.0005 <br /> Ethylbenzene (ppm) 0.0005 0.514 <0 5 <br /> Total Xylenes (ppm) 0.030 5.14 0.773 <br /> Total Lead (ppm) NA 0.16 <0.005 <br /> * <br /> measured in feet t below top of well casing. <br /> ** elevation in feet above mean sea level , <br /> Schack & Company, Inc. Survey; March 27, 1992 <br /> *** surveyed elevation-depth to water - groundwater <br /> surface elevation in feet above mean sea level <br /> NA not analyzed; ppm - part per million <br /> TPHg total petroleum hydrocarbons as gasoline <br /> <0.05 not detected at or above the laboratory detection <br />