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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 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-6 09/15/93 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-6 05112/94 13.56 8.95 4.61 5500 - ND<D.5 ND<0.5 ND<0.5 ND<0.5 --- - 4.2 PACE <br /> MW-6 10/07/94 13.56 9.72 3.84 ND<50 - ND<0.5 ND<0.5 ND<0.5 ND<0.5 - - 4.3 PACE <br /> MW-6 12108+94 13.56 9.88 3.68 300 - ND<0.5 ND<0.5 ND<05 ND<0.5 --- - 4.6 PACE <br /> MW-7 09/15193 1427 9.59 4.68 ND<50 - ND<0.5 ND<0.5 ND<03 ND<0.5 --- - - PACE <br /> MW-7 (e) 01113194 1427 --- - - - - - - - - - - <br /> MW-7 (e) 05/12/94 1427 - - - - - - - - - - <br /> MW-7 (a) 10/07/94 1427 - <br /> MW-7 (e) 12/08194 14.27 - - - - - - - - - - - <br /> QC-2 {fy 05/17/93 - - - ND<50 - ND<0.5 ND<0.5 ND<0S ND<i.o - - - PACE <br /> QC-2 09/15193 - -- - ND<50 - ND<0.5 ND<o.5 ND<0.5 ND<0.5 - - - PACE <br /> OC-2 (1) 01/12!94 - -- - ND<50 - ND<o.5 ND<0.5 ND<0.5 ND<0.5 - - - PACE <br /> QC-2 (f) 05/12/94 - - - ND<50 - ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- - - PACE <br /> QC-2 (f) 10/07/94 - --- -- ND<50 - ND<0.5 ND<0.5 ND<0.5 ND<0.5 - - - PACE <br /> QC-2 (Q 12!08!94 - - - 52 - -0.6 1.1 22 7.8 - - - 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 W-34 at Mathey Road,45 feet north and 52 feet west of centerfins <br /> B Benzene (elevation of 1250 feet above mean sea level.) <br /> T Toluene <br /> ttal <br /> X Total xylenes (b) Groundwater elevations in feet above mean sea level. <br /> TOG Total oil and grease (c) Blind duplicate. <br /> HVOCS Halogenated volatile organic compounds <br /> DO Dissolved oxygen (d) Detection limits vary;see laboratory report- <br /> ppb <br /> eportppb Parts per billion <br /> ppm Parts per million (e) Well Inaccessible due to road construction/vehicular traffic. <br /> ND Not detected above reported detection limit <br /> Not analyzedlappriceble/rneasured (f) Travel blank <br /> PACE Pace,Inc- <br /> E:V A10.151-1-4 <br /> 09-Mar-95 PAGE 2 <br />