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a, <br /> Table 1 <br /> GROUNDWATER ELEVATIONS AND SAMPLE ANALYTICAL RESULTS <br /> Boettcher Western Properties <br /> 4555 North Pershing Avenue <br /> Stockton, California <br /> Total <br /> Well Sampling TOC DTW GWE B T E X MTBE TPHg TPHd TPI-Imo Lead <br /> Number Date (feet) (feet) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> MW-5 8/30/95 7.59 24.62 -17.03 ND<0.5 ND<0.5 ND<0.5 ND<2.0 -- 100 - -- -- <br /> (cont.) 12/11/95 7.59 24.53 -16.94 ND<0.5 ND<0.5 ND<0.5 ND<2.0 -- 100 -- -- -- <br /> 3/14/96 7.59 20.94 -13.35 ND<0.5 ND<0.5 ND<0.5 ND<2.0 ND<50 100 -- -- -- <br /> otes <br /> TOC Top of casing elevation in feet referenced to mean sea level <br /> DTW Depth to groundwater <br /> GWE Groundwater elevation in feet(TOC-DTW) <br /> BTEX Benzene, toluene,ethylbenzene and total xylenes by EPA Method 8020(modified). <br /> TPHg Total petroleum hydrocarbons as gasoline by EPA Method 8015 (modified). <br /> TPHd Total petroleum hydrocarbons as diesel by EPA Method 8015(modified). <br /> TPHmo Total petroleum hydrocarbons as motor oil by EPA Method 8015 (modified). <br /> ppb Parts per billion (ug/1) <br /> ND Not detected at or above indicated method reporting limit <br /> — Not analyzed <br /> (1) Groundwater elevation data obtained 11/12/92 <br /> (2) Groundwater elevation data obtained 9/3/93 <br /> Samples collected through 12/3/93 by McLaren/Hart <br /> Samples collected sutce 12/21/94 by Clearwater Group Inc. <br /> Page 3 of 3 <br />