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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-5 07/28/94 4.38 17.86 -13.48 1000 -- - 440 19 10 38 -- 3.9 PACE <br /> QC-1 (c) 07/28/94 -- --- -- 1200 -- -- 470 23 11 46 --- 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-6 07/28/94 3.56 17.20 -13.64 69 - - ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- 2.2 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 /> MW-7 07/28/94 4.46 18.06 -13.60 67 - - 6.8 ND<0.5 ND<0.5 ND<0.5 -- 4.6 PACE <br /> QC-2 (f) 04/04/93 -- --- -- ND<50 --- --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- -- PACE <br /> QC-2 {f1 10/05/93 - -- ND<50 - --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- --- PACE <br /> QC-2 (t1 01/07/94 --- - --- ND<50 - --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- --- PACE <br /> QC-2 {t1 04/20/94 -_ - ND<50 --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 -- --- PACE <br /> QC-2 (f) 07/28/94 - --- ND<50 --- --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 -- - PACE <br /> I <br /> ABBREVIATIONS: NOTES: <br /> TPH-G Total petroleum hydrocarbons as gasoline (a) Casing elevations surveyed to the nearest 0.01 foot relative to mean sea level. <br /> TPH-D Total petroleum hydrocarbons as diesel <br /> TPH Total petroleum hydrocarbons (b) Groundwater elevations in feet above mean sea level. <br /> B Benzene <br /> T Toluene (c) Blind duplicate. <br /> E Elhylbenzens <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 (1) Travel blank <br /> - Not measured/analyzed/applicable <br /> ND Not detected above reported detection limit <br /> PACE Pace,Inc. <br /> EWdP1361363}1.W02 <br /> 06-Sep-94 PAGE 2 <br />