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` a 4 <br /> a; <br /> - TABLE 3 CONCENTRATIONS (ug/L) OF PETROLEUM HYDROCARBON CONSTITUENTS IN <br /> GROUNDWATER, FORMER EXXON. RS 7.-1050, 909 WEST HAMMER LME, <br /> STOCKTON, CALIFORNIA, NOVEMBER 1986 - SEPTEiISER 1990 <br /> Total f: <br /> Well Petroleum <br /> x#� T <br /> 230. Date Benzene Toluene .. Xylenes Et- hylbenzene Hydrocarbons Laboratory ��, •�,.. <br /> MW1 11/13/86 5. 8 0.5 1.3 NA 290 Sequoia � _ <br /> - � : <br /> MW1 06/26/87 62 .2 141.4 ?72.9 155.4 2,750 Environ - <br /> T41 02/11/88 <0.5 <0.5 <0.5 <0.5 <100 Enseco <br /> MW1 05123/88 <0 .5 0. 9 <0,5 <0 .5 <50 WESCO (Pace) `" �' <br /> MW1 08/26/88 <0.5 <0 .5 <0.5 <0 .5 <50 pace <br /> -; <br /> Mwi 01/07/89 <0.2 <0,2 <0.2 <0 .2 <250 Pace r <br /> Mw1 05/04/89 <0.5 <0,5 <0.5 <0 .5 <100 Acurexy,rt <br /> MW1 07/19/89 <0.5 1 ,5 <0.5 <0.E <250 Pace _ <br /> MW1 12/19/89 <0.5 <0 :5 <0.5 <0 <250 Pace <br /> v <br /> MW1 02/19/90 <0.5 <0 .5 <0.5 <0.5 <50 Pace ; <br /> MW1 06/28/90 <0.5 <0.5 <0.5 <0 .5 <50 Pace <br /> x <:... <br /> MW1 09/19/90 <0,5 <0 ,5 <0,5 <0 .5 <50 Pace <br /> MW2 11/13/86 28 0.5 2 .2 NA 290 sequoia <br /> MW2 06/26/87 4.2 1 . 1 2. 1 <0.5 14 . 9 Environ P <br /> MW2 02/11/88 <0.5 <0 .5 <0,5 <0.5 <100 Enseco <br /> MW2 05/23/88 <0.5 <0.5 <0 .5 <0.5 <50 WESCO (Pace) <br /> MW2 48/26/E8 <0.5 <0,5 <0.5 <0..5 <50 Pace <br /> MW2 01/07/89 <0.2 0 . 6 <0 .2 <0 .2 <250 Pace <br /> Y{ <br /> MW2 05/04/89 <0.5 <O,s <0.5 <0.5 <100 Acurer, <br /> MW2 07/19/89 <0.5 <0 ,5 <0.5 <0.5 <250 Dace =: <br /> MW2 12/19189 <0.5 <0 ,5 <0 .5 <0 .5 <250 Pace <br /> MW2 02/14/90 <0.5 <0 .5 <0 ,5 <0 .5 <50 Pace <br /> MW2 06/28/90 <0.5 <0 .5 <0 .5 <0 .5 <50 Pace { . <br /> MW2 09/19/90 <0.5 <0.5 <0.5 <0 .5 <50 Pace <br /> .Yrc ; <br /> NA - Not analyzed 41t <br /> Z" <br /> e42171050/ncv/t3 t 1 <br /> b; <br />