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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.1 a-136 <br /> WELL DATEOF CASING DEPTHTO GROUNDWATER TPH-G TPH-D TPH B 7 E X MTBE HVOC DO LAB <br /> ID SAMPLING/ ELEVATION(a) WATER ELEVATION (b) (Ug4) (Ug4) (ug4) (ug4) (4) (ug4) (u94) (ug 1} (094) (ppm) <br /> MONITORING (Feet) (Feet) (Feet) <br /> OC-2 (h) 04/04799 - -- ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - - - PACE <br /> OC-2 (h) 10/05/53 -- -- -- ND<50 --- --- ND<0.5 ND<o.5 ND45 ND<0.5 - -- PACE <br /> OC-2 (h) 01/07/94 - ND<50 -- ND<0.5 ND<0.5 ND<0.5 ND<0.5 -- - - PACE <br /> 042 (h) 04/20194 - - NO<50 -•- - ND<0.5 ND<0.5 ND<0.5 ND<0.5 - -- - PACE <br /> 4C-2 (h) 07/26/94 "' --- -- NNW -- --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 - -- - PACE <br /> OC-2 (h) 12/09/94 - ND<50 -- - ND<0.5 ND4.5 ND<0.5 ND<l - -- - PACE <br /> OC-2 (h) 03863/95 --- -- --- ND<% - ND<0.50 ND<0.50 ND<0.50 ND<1.o - - ATI <br /> 062 (h) 04712+`95 --- -- -» ND<50 -- --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 - ••- ATI <br /> OC-2 (h) 07P20195 -- ND<50 - - ND<0.50 ND<0.50 ND<0.50 ND<1.0 - -- - ATI <br /> OC-2 (h) 11/02155 -- ND<50 - ND<0.5 ND<0.5 ND<0.5 ND<1.0 ND<5.0 - - All <br /> OC-2 (h) 01/16/96 -- -- ND<50 - - ND<0.50 ND<0.50 ND<0.50 ND<l,a ND<S.o »• ATI <br /> OG2 (h) 04122/96 - - ND<50 - - ND4.5 ND<4 ND<1 ND<1 ND<10 - - SPL <br /> 00-2 (h) 07/in6 -- - - ND<5o - ••. ND<0.5 ND<4 NO<i ND<1 ND<10 - - SPL <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 hydrocarborf9 as diesel <br /> TPH Total petroleum hydrocarbons (b) Groundwater elevations in feet above mean sea level. <br /> B Benzene <br /> T Toluena (c) A copy of the documentation for this data is included in Appendix C of Alisto report 10-136-06-004. <br /> E Elhylbenzene <br /> X Total xylenes (d) Blind duplicate. <br /> MTBE Methyl ter[butyl ether <br /> HVOC Halogenated votatle organic calrlrx7urxls (e) MTBE peak present. See documentation in Appendix C of Ahsto report 10-136-06004. <br /> DO Etissohred oxygen <br /> Ug4 Micrograms per liter (!) Sample pattern does not match gasoline standard pattern. <br /> ppm Parts per million <br /> Not measuredlanalyzed/applicable (9) Detection limits vary;see laboratory report. <br /> NO Not detected above reported detection limit <br /> PACE Pace,Inc. (h) Travel blank. <br /> ATI Analytical Technologies Inc. <br /> SPL em Petroleum Laboratories <br /> F50 IM 0.13!1747-I.101102 <br /> 30-Oct-97 PAGE 4 <br />