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COLUMBIA ANALYTICAL SERVICES, INC t � <br /> Analytical Report <br /> Client EMCON Associates Date Received 01/29/93 <br /> Project. EMCON Project No OG71-019 01 Service Request No SJ93-0122 <br /> ARCO Facility No 2133 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 E-7 18 E-8 (23) E-9 (18) <br /> Date Analyzed 02/09/93 02!05/93 " 02105/93 ' <br /> Analyte MRL <br /> Benzene 0 5 <5 •' 31. 390. <br /> Toluene 0.5 2 7 <1 •"" 25. <br /> Ethylbenzene 0.5 1 6 1 9 310 <br /> Total Xylenes 0.5 2 9 1 8 730. <br /> TPH as Gasoline 50 660. 960 12,000 <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Lima <br /> ND None Detected at or above the method reporting limit <br /> " This sample was part of the analytical batch started on February 5, 1993 However, it was <br /> analyzed after midnight so the actual date analyzed is February 6, 1993. <br /> Raised MRL due to matrix interference <br /> Raised MRL due to high analyte concentration requiring sample dilution <br /> Approved by Date F� rc, f'Z 1 �77 3 __ <br /> 5 <br />