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A S S O C I A T E S I M C <br /> RESULTS <br /> Laboratory analyses detected petroleum hydrocarbon constituents in the sample collected from <br /> well MW 1 The constituent concentrations detected include TPHg (85 pbb), benzene (0 5 ppb), <br /> and xylenes (1 2 ppb) Neither ethyl benzene nor toluene were detected Groundwater samples <br /> collected from wells MW2, MW3 and the Domestic Well contained no detectable concentrations <br /> of BTEX or TPHg 1,2-DCA was detected 1n MW1, MW2 and MW3 1n concentrations of 13 <br /> ppb, 5 5 ppb, and 3 0 ppb, respectively <br /> Analytical results are summarized in Table 1 Laboratory reports and chain-of-custody <br /> documentation are presented in Attachment 2 <br /> CONCLUSIONS <br /> The detected concentrations of petroleum hydrocarbon constituents appear to be consistent with <br /> historical data The groundwater gradient and flow direction are consistent with historical data <br /> If you should have any questions or comments regarding this report, please contact the undersigned at <br /> your convenience at(209) 579-2221 <br /> SRespectfully submitted, <br /> ATC Associates Inc <br /> J Kundert � 00A�O <br /> Staff Geologist , <br /> Jeanne Hornsey, P E <br /> CA Registered Civil Engineer No 47410 x <br /> IP - <br /> cc Ms Lolly Bozzano + <br /> Ms Leanne Scannavino <br /> Mr Marty Hartzell, RWQCB <br /> W 1148851repoMk4cp2001 doc 3 <br />