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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 TPHmo Lead <br /> Number Date (feet) (feet) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> MW-5 6/8/95 759 2325 -1566 ND<0 5 ND<0 5 ND<0 5 ND<10 -- ND<50 -- — <br /> (cont) 8/30/95 759 2462 -1703 ND<0 5 ND<0 5 ND<0 5 ND<2 0 -- 100 -- -- -- <br /> 12/11/95 759 2453 -1694 ND<0 5 ND<0 5 ND<0 5 ND<2 0 -- 100 -- -- - <br /> 3/14/96 759 2094 -1335 ND<0 5 ND<0 5 ND<0 5 ND<2 0 ND<50 100 -- -- -- <br /> 6/19/96 759 2100 -1341 ND<0 5 ND<0 5 ND<0 5 ND<2 0 ND<50 70 -- -- __ <br /> Notes <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(mochfied) <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 since 12/21/94 by Clearwater Group Inc <br /> Page 3 of 3 <br />