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COLUMBIA ANALYTICAL SERVICES, INCL } „ <br /> Client EMCON Associates Date Received 04/24/92 <br /> Project EMCON Project No G71-19 01 Work Order # SJ92-0494 <br /> Arco Facility No 2133 Sample Matrix Water <br /> QA/QC Report <br /> Surrogate Recovery Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/DHS LUFT Method <br /> Samole Name Date Analvzgd Percent Recovery <br /> a,,a,, -Trifluorotoluene <br /> E-2 122) 05/01/92 96 • <br /> E-4 {21) 04/29/92 98 <br /> E-5 (19) 05/01/92 84 <br /> E-7 (18) 05/01/92 124 <br /> E-8 (23) 05/01/92 112 <br /> E-9 (18) 05/01/92 88 <br /> E-10 (22) - 04/29/92 - 90 <br /> E-1 1 123) 04/29/92 108 <br /> E-12 (22) 04/29/92 110 ` <br /> PR-1 (27) 04/29/92 88 <br /> PR-2 (27) 04/29/92 94 <br /> BHD-1 (27) 04/29/92 89 <br /> BHD_2-(28) 04/29/92 89 <br /> - - P_R-1-(27)=MS 04/29/92 _96 <br /> PR-1 (27) MSD 04/29/92 126 <br /> Method Blank 04/29/92 96 <br /> Method Blank 05/01/92 92 <br /> CAS Acceptance Criteria 70-130 <br /> TPH Total Petroleum Hydrocarbons <br /> The surrogate used on these samples was 4-Bromofluorobenzene <br /> Approved byAwymamu/ Date AV <br /> r <br /> 8 <br /> nn. n __ i + • C i r� f <br /> - Or•", e4l'A',117 ')AnO • r-y AOR [� r5 <br /> 1_'il OlA <br />