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WEISS ASSOCtA7ES <br /> Mr.John Randall 7 <br /> November 14, 1989 <br /> CHEMICAL ANALYSES <br /> The ground water samples were analyzed for total purgeable petroleum hydrocarbons <br /> (TPPH) by modified EPA Method 8015 and for benzene, ethylbenzene,toluene and xylenes <br /> (BETX) by EPA Method 8020. The results of the water analysi-s are presented in Table 2 and <br /> the analytic reports are included as Attachment C. <br /> Analytic results of ground water samples from monitoring well MW-2 show higher <br /> concentrations of BETX and concentrations of TPPH comparable to the historical high <br /> concentrations of July 1989. Analytic results from MW-5 show that hydrocarbons were not <br /> detected. Because there is only one current data point, TPPH and benzene isoconcentration <br /> maps were not generated. <br /> We appreciate the opportunity to provide hydrogeologic consulting services to Chevron <br /> and trust that this report meets your needs. If you have any questions,please call Joe Theisen t` <br /> or Eric Anderson. <br /> ;'. Sincereiv, <br /> ED GF Weiss..,sociates <br /> Oy <br /> �V �n ,P V`T.4C� W• <br /> DCS <br /> Eric W. Anderson <br /> CEPTGclro N Environmental Technician <br /> III IN IV, G GEOLO � <br /> �� CAL1F�'� Richard B. Weiss <br /> Principal Hydrogeologist <br /> EWAIRBWkw <br /> F.%ALL%CHEV 13G5L3OC9.W P <br /> Attachments:A -Water Sample Collection Records <br /> B-Chain of Custody <br /> C-Analytic Reports <br /> } <br /> I11110111 MIMIC I <br />