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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 MTBE DO LAB <br /> ID SAMPLING/ ELEVATION (a) WATER ELEVATION (b) (ugA) (ugA) (ugA) (ugA) (ug/l) (ugA) (ppm) <br /> MONITORING (Feet) (Feet) (Feet) <br /> QC-2 (g) 09/18/92 - - ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - --- ANA <br /> QG2 (g) 12/09/92 - - -- ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 -- - ANA <br /> OC-2 (g) 03d W3 -- - ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - - PACE <br /> QC-2 (g) 06/15/93 __ - ND<50 ND<0.5 ND<0.5 ND<0.5 1.3 - - PACE <br /> OC-2 (g) 09/15/93 - -- ND<50 ND<0.5 ND<0.5 ND<0.5 0.7 - --- PACE <br /> QC 2 (g) 12/22/93 - - - ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- PACE <br /> OC-2 (g) 04/01/94 -- - - ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - PACE <br /> QC-2 (g) 07/27/94 - --- - ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 -- - PACE <br /> OC-2 (g) 11/30/94 - -- ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- --- PACE <br /> OC-2 (g) 02/15/95 --- -- --- ND<50 ND<0.50 ND<0.50 ND<0,50 ND<1.0 -- -- All <br /> QC-2 (g) 04/21/95 - - ND<50 0.8 1.5 ND<0.50 ND<1.0 - ATI <br /> QC-2 (g) 07/19/95 --- - - ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- - ATI <br /> OC-2 (g) 10/20/95 --- - --- ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 ND<5.0 - ATI <br /> QC-2 (g) 04/23/96 - - --- ND<500 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<10 -- SPL <br /> OC-2 (g) 07/12/96 - - ND<50 ND<0.5 ND<1 ND<1 ND<i ND<10 - SPL <br /> ABBREVIATIONS: NOTES: <br /> TPH-G Total petroleum hydrocarbons as gasoline (a) Casing elevations surveyed to the nearest 0.01 toot <br /> B Benzene relative to mean sea level on August 20,1991. <br /> T Toluene <br /> E Ethylbenzene (b) Groundwater elevations in feet relative to mean sea level. <br /> X Total xylenes <br /> MTBE Methyl tort butyl ether (c) Well covered by landscaping. <br /> DO Dissolved oxygen <br /> ug/I Micrograms per liter (d) Blind duplicate. <br /> ppm Parts per million <br /> ND Not detected above reported detection limit (e) Sample collected before purging. <br /> - Not applicablelmeasured/analyzed <br /> PRE Precision Analytical Laboratory {f) Well destroyed on February 5,1991 <br /> ANA Anametrix,Inc. <br /> PACE Pace,Inc. (g) Travel blank. <br /> ATI Analytical Technologies,Inc. <br /> SPL Southern Petroleum laboratories <br /> 1 <br /> F 10110-03 7110-037 G W,W Q2 <br /> PAGE 7 <br /> 08-Oct-9S <br />