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TABLE 1-SUMMARY OF RESULTS OF GROUNDWATER SAMPLING <br /> BP OIL COMPANY SERVICE STATION NO,11192 <br /> 1403 COUNTRY CLUB BOULEVARD,STOCKTON,CALIFORNIA <br /> ALISTO PROJECT NO.10-037 <br /> WELL. DATE OF CASING DEPTH TO GROUNDWATER TPH•G B T E X DO LAB <br /> 1D SAMPLING/ ELEVATION (a) WATER ELEVATION (b) (ppb) (ppb) (ppb) (ppb) (ppb) (ppm) <br /> j MONITORING (Feet) (Feet) (Feet) <br /> QC-2 (1) 09/1a/92 --- - - ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0,5 -- ANA <br /> CO2 (1) 12/09/92 --- -- --- ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 -- ANA <br /> OC-2 (1) 03/11/93 -- --- ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 -- PACE <br /> OC-2 (1) 06/1"3 - --- - ND<50 ND<0.5 ND<0.5 ND<0.5 1.3 - PACE <br /> OC-2 (1) 09/15/93 - --- - ND<50 ND<0.5 ND<0.5 ND<0.5 0.7 -- PACE <br /> QC-2 (n 12WJ93 - - - ND<50 ND<0.5 ND<0.5 ND<0,5 ND<0.5 PACE <br /> OC-2 (I) 04101/94 - --- - ND<50 ND<0.5 ND<0.5 ND<0.5 NM.5 -- PACE <br /> QC2 (1) 07/27/94 -- -- - ND<50 ND<0.5 ND<0.5 N13<0.5 ND<0.5 PACE <br /> ABBREVIATIONS: NOTES: <br /> TPH-G Total petroleum hydrocarbons as gasoline (a) Casing elevations surveyed on August 20,1991, <br /> B Benzene to the nearest 0.01 foot relative to mean sea level. <br /> T Toluene <br /> i <br /> E Ethylbenzene (b) Groundwater elevations In feet relative to mean sea level. <br /> X Total xylenes <br /> DO Dissolved oxygen <br /> Ppb Parts per billion (C) Well covered by landscaping. <br /> ppm Pads per million <br /> ND Not detected above reported detection limit <br /> Not applicable/measured/analyzed (d) Well destroyed on February 5,1991. <br /> PRE Precision Analytical Laboratory <br /> PACE Pace,Inc. (e) Blind duplicate, <br /> ANA Anamelrix,Inc. <br /> (I) Travel blank. <br /> l <br /> 14-Sep 94 <br /> PAGE 3 <br />