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COLUMBIA ANALYTICAL SERVICES, INC + <br /> Analytical Report <br /> Client EMCON Associates Date Received 11/19/93 <br /> Project EMCON Project No OG71 017 01 Service Request No SJ93-1 434 <br /> ARCO Facility No 434 Sample Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFT Method <br /> Ng/L (ppb) <br /> Sample Name W-1A (77) _W 28 (86) W-3 (68) <br /> Date Analyzed 11/23/93 11/23/93 11/23/93 <br /> Analyte MRL <br /> Benzene 0 5 ND ND ND <br /> Toluene 0 5 NO NO NO <br /> Ethylbenzene 0 5 ND ND NO <br /> Total Xylenes 0 5 ND ND ND <br /> TPH as Gasoline 50 ND ND ND <br /> Sample Name W-5 (69) W-6 (69) W-7 (69) <br /> Date Analyzed 11/23/93 " 11/23/93 11/23/93 " <br /> Analyte MRL <br /> Benzene 0 5 ND ND ND <br /> Toluene 0 5 ND ND NO <br /> Ethylbenzene 0 5 NO ND ND <br /> Total Xylenes 0 5 NO ND ND <br /> TPH as Gasoline 50 ND ND NO <br /> This Sample was part of the analytical batch started on November 23 1993 However, it was analyzed <br /> after midnight so the actual date analyzed is November 24, 1993 <br /> Approved by I Date <br /> 4mf 0 _... ..,.J A <br />