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404 WEST FREMONT STREET <br /> WKA No 1628.02 <br /> October 7, 1994 <br /> Page 2 <br /> The samples were immediately placed in an ice-chest with ice and submitted under chain-of- <br /> custody to a California-certified laboratory for analysis of Total Petroleum Hydrocarbons (TPH) <br /> as gasoline using EPA test method 8015 modified, and Benzene, Toluene, Ethylbenzene and Total <br /> Xylenes (BTEX) using EPA test method 602 <br /> The submersible pump was cleaned with a solution of Liqui-nox and water prior to purging each <br /> well to minimize the potential for cross-contamination All water removed during sampling and <br /> purging operations was placed in sealed and labeled 55-gallon drums and stored on site <br /> Analysis of water samples MW2, MW5, and MW6 revealed no detectable concentrations of TPH <br /> or BTEX Analytical results of MW3 revealed a TPH as gasoline concentration of 300 µg/f, <br /> BTEX was not detected Analytical results of MW4 revealed a TPH as gasoline concentration of <br /> 280 µg1 P and elevated BTEX concentrations Analytical results for ground water samples <br /> obtained from the six on-site monitoring wells are included as Table 1, and sununarized on <br /> Plate 3 <br /> The next quarter of ground water sampling is scheduled for the end of November, 1994 Our <br /> report for next quarter will be transmitted upon completion of laboratory testing <br /> Wallace ® Kuhl & Associates, Inc <br /> /044'c <br /> Robert <br /> 044' -- <br /> Robert Kull <br /> Staff Engineer <br /> Richard Premzic <br /> Registered Geologist #5586 <br /> �r RNK RLP rbn sdm <br /> RaW628-02 QTI `NK <br /> WALLACE KUHL <br /> Rt cy<led lq., Er ASSOCIATES INC <br />