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TABLE 1-SUMMARY OF RESULTS OF GROUNDWATER SAMPLING <br /> BP OIL COMPANY SERVICE STATION NO.11193 <br /> 3202 WEST HAMMER LANE,STOCKTON,CALIFORNIA <br /> ALISTO PROJECT NO.10-136 <br /> WELL DATE OF CASING DEPTH TO GROUNDWATER TPH-G TPH-D TPH B T E X HVOC DO LAB <br /> ID SAMPLING/ ELEVATION (a) WATER ELEVATION (b) (ppb) (Ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppm) <br /> MONITORING (Feet) (Feet) (Feet) <br /> MW-5 04/25/94 4.38 17.40 -13.02 170 --- -- 34 1.0 ND<0.5 8.1 --- 3.9 PACE <br /> MW-6 04/25/94 3.56 16.73 -13.17 53 - - ND<0.5 ND<0.5 0.6 2.4 -- 2.0 PACE <br /> MW-7 04/25/94 4.46 17.59 -13.13 76 --- -- 1.0 ND<0.5 ND<0.5 2.0 --- 4.7 PACE <br /> QG2 04/04/93 -- -- -- ND<50 --- - ND<0.5 ND<0.5 ND<0.5 ND<0.5 - - PACE <br /> QC-2(f) 10/05/93 --- -- -- ND<50 - - ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- - PACE <br /> QC-2(I) 01/07/94 - --- ND<50 - --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 - --- PACE <br /> QG-2{f) 04/20/94 - -- -- ND<50 - -- ND<0.5 ND<0.5 ND<0.5 ND<0.5 -- - PACE <br /> ABBREVIATIONS: NOTES: <br /> TPH-G Total petroleum hydrocarbons as gasoline (a) Casing elevations surveyed to the nearest 0.01 toot relative to mean sea level. <br /> TPH-D Total petroleum hydrocarbons as diesel <br /> TPH Total petroleum hydrocarbons (b) Groundwater elevations in feel above mean sea level. <br /> B Benzene <br /> T Toluene (c) Blind duplicate. <br /> E Ethylbenzene <br /> X Total xylenes (d) Sample pattern does not match gasoline standard pattern. <br /> HVOC Halogenated volatile organic compounds <br /> DO Dissolved oxygen (e) See laboratory report for detection limits. <br /> ppb Parts per billion <br /> Ppm Parts per million (Q Travel blank. <br /> --- Not measuredlanalyzedlapplicable <br /> ND Not detected above reported detection limit <br /> PACE Pace,Inc. <br /> ESCA413B1Dt36-1W02 <br /> 04-Aug-94 PAGE 2 <br />