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TABLE 1-SUMMARY OF RESULTS OF GROUNDWATER SAMPLING <br /> BP OIL COMPANY SERVICE STATION NO.11195 <br /> 16500 SOUTH INTERSTATE 1-5,LATHROP,CALIFORNIA <br /> ALISTO PROJECT NO.10-151 <br /> WELL DATE OF CASING DEPTH TO GROUNDWATER TPH-G TPH-D B T E X TOG HVOCs DO LAS <br /> ID SAMPLING/ ELEVATION (a) WATER ELEVATION (b) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppm) <br /> MONITORING (Feet) (Feet) (Feet) <br /> MW-6 09/15193 13.56 8.98 4.58 400 - 2.4 ND<0.5 ND<0.5 ND<0.5 - - - PACE <br /> MW-6 01/12/94 13.56 9.62 3.94 670 - ND<0.5 ND<0.5 ND<0.5 ND<0.5 - -- 4.1 PACE <br /> MW-7 09/15/93 14.27 9.59 4.68 ND<50 - ND<0.5 ND<0.5 ND<0.5 ND<0.5 -- - PACE <br /> MW-7 (e) 01/13/94 14.27 - -- - - - - - - -- - - -- <br /> QC-2 (f) 05117/93 - - - ND<50 - ND<0.5 ND<0.5 ND<0.5 ND<1.0 - - -- PACE <br /> QC-2 (f) 09/15193 - - ND<50 - ND<0.5 ND<0.5 ND<0.5 ND<0.5 - - -- PACE <br /> OC-2 (f) 01/12/94 - - - 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) Top of casing elevations surveyed in reference to San Joaquin datum, <br /> TPH-D Total petroleum hydrocarbons as diesel brass cap UV-34 at Mathey Road,45 feet north and 52 feet west of centerline <br /> B Benzene (elevation of 12.50 feet above mean sea level.) <br /> T Toluene <br /> E Ethylbenzene (b) Groundwater elevations in feet above mean sea level. <br /> X Total xylenes <br /> TOG Total oil and grease (c) Blind duplicate sample. <br /> HVOCs Halogenated volatile organic compounds <br /> DO Dissolved oxygen (d) Detection limits vary(see laboratory report). <br /> ppb Parts per billion <br /> ppm Parts per million (e) Well inaccessible due to road conctruction. <br /> ND Not detected above reported detection limit <br /> - Not analyzed/available/applicable (f) Travel blank <br /> PACE Pace,Inc. <br /> 25-Feb-94 PAGE 2 <br />