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TABLE 1-SUMMARY OF RESULTS OF GROUNDWATER SAMPLING <br /> BP OIL COMPANY SERVICE STATION NO.11219 <br /> 1403 COUNTRY CLUB BOULEVARD,STOCKTON,CALIFORNIA <br /> ALISTO PROJECT NO, 10-W7 <br /> WELL DATE OF CASING DEPTH TO PRODUCT GROUNDWATER TPH-Q B T E X LAB <br /> ID SAMPLING/ ELEVATION(a) WATER THICKNESS ELEVATION (b) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> MONITORING <br /> MW-5 08/05/91 6.15 30.72 0.00 -24.57 ND NO NO NO ND PRE <br /> MW-5 08115/91 6.15 -- -- --- - - - - PRE <br /> MW-5 12709191 6.15 31.10 0.00 -24.95 NO NO NO NO ND PRE <br /> MW-5 031091'92 6.15 30.47 0.00 -24.32 ND 6.2 NO 0.5 NO PRE <br /> MW-5 06119/92 6.15 29.99 0.00 -23.84 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ANA <br /> MW{? 08105/91 5.80 29.82 0.00 -24.02 NO NO NO NO ND PRE <br /> MW-6 08/15191 5.80 -- -- - - - - PRE <br /> MW-6 120A1 5.80 30.42 0.00 -24.62 NO NO NO ND ND PRE <br /> MW-6 03109/92 5.80 29,53 0.00 -23.73 NO NO ND NO NO PRE <br /> MW-6 06119192 5.80 29.24 0.00 -23.44 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ANA <br /> MW-7 08/05/91 6.21 30.82 0.00 -24.61 70 19 NO NO ND PRE <br /> MW-7 08!15/91 6,21 -- --- - -- - -- -- PRE <br /> MW-7 12/09/91 6.21 31.36 0.00 -25.15 NO 19 NO 1.2 NO PRE <br /> MW-7 0310g/92 6.21 30.15 0.00 -23.94 NO NO NO ND NO PRE <br /> i <br /> MW-7 06/1W92 6.21 30.19 0.00 -23.98 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ANA <br /> I ' <br /> ABBREVIATIONS: NOTES: <br /> TPH-G Total Petroleum Hydrocarbons as Gasoline (a) Casing elevations were surveyed on August 20,1991 <br /> B Benzene to the nearest 0.01 foot relative to Mean Sea Level. <br /> T Toluene <br /> E Ethylbenzene (b) to feet retable to Mean Sea Level. <br /> X Xylenes <br /> ND Not detected above reported detection limits (c) MW 2 destroyed an 02/05191 <br /> ANA Anametrix,Inc. <br /> PRE Precision Analytical Laboratory <br /> (ppb) Parts per Billion <br /> - Not analyzed/not available <br /> PAGE 2 <br /> 21,1uh92 <br />