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781 SWIFT WAY <br /> WKA No 1735 02 <br /> • September 30, 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 /> using Modified EPA test method 8015, and Benzene, Toluene, Ethylbenzene and Total Xylenes <br /> (BTEX) using EPA test method 502 <br /> The two-inch diameter submersible pump was cleaned prior to purging each well with a solution <br /> of trisodium phosphate and distilled water to minimize the potential for cross-contamination All <br /> water removed during sampling and purging operations was placed in sealed and labeled 55- <br /> gallon drums and stored on site <br /> No free product was observed in monitoring wells MWl, MW2, and MW3 Analytical results of <br /> water sample MW1 revealed a TPH as motor oil concentration of 170 µg/f and a TPH as diesel <br /> concentration of 720 µglf, TPH as gasoline and BTEX was not detected Analytical results of <br /> water samples MW2 and MW3 revealed no detectable concentrations of TPH nor BTEX <br /> Analytical results for the ground water samples obtained from the three on-site monitoring wells <br /> are summarized in Table 2 Complete analytical results and chain-of-custody documentation are <br /> included in the Appendix <br /> The next quarter of ground water sampling is scheduled for December, 1994 A summary of our <br /> findings will be transmitted upon completion of laboratory testing Please call if you have any <br /> questions regarding this report <br /> Wallace ■ KuhI & Associates, Inc <br /> i <br /> L� <br /> Robert Kull Eric Hubbard <br /> Staff Engineer Registered Geologist x+4807 <br /> RK EH sdm <br /> 0 Ftob,MS�o2 <br /> WALLACE KUHL <br /> RecycicdpaW &ASSOCIATES INC <br />