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Table 1 <br /> GROUNDWATER ELEVATIONS AND SAMPLE ANALYTICAL RESULTS <br /> Conrady Service Station <br /> 1002 North Yosemite Street <br /> Stockton,California <br /> Sample Collection TOC DTW GWE TPHg B T E X MTBE <br /> No Date (feet) (feet) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> MW-6 11/14/96 9642 2025 7617 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<2 0 ND<5 0 <br /> cont'd 3/21/97 9642 1524 8118 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<2 0 ND<5 0 <br /> 6/16/97 9642 1619 8023 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<2 0 ND<5 <br /> Notes, <br /> TOC Top of casing referenced to temporary benchmark(project datum=100} <br /> DTW Depth to water <br /> GWE Groundwater elevation(TOC-DTW) <br /> TPHg 1 otal petroleum hydrocarbons as gasoline by EPA Method 8015(modified) <br /> BTEX Benzene,toluene,ethylbenzene and total xylenes by EPA Method 8020 <br /> MTBE Methyl tert-butyl ether by EPA Method 8020 <br /> ND Not detected,method detection limit not available <br /> ND<50 Not detected in concentrations exceeding the indicated method detection or reporting limit <br /> --- Not tested <br /> ppb Parts per billion <br /> (a) Date of groundwater gauging Groundwater resampled 1/4/95 <br /> (b) Reporting limits elevated due to high levels of target compounds,sample run at dilution <br /> (c) Date of groundwater gauging Groundwater resampled 7/9/97 <br /> I <br /> Page 4 of 4 <br />