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COLUMBIA ANALYTICAL SERVICES, INC <br /> CIA/OC Report <br /> Client EMCON AssociatesDate Received 08/04/93 <br /> Project EMCON Project No OG71 029 01 Service Request No SJ93-0960 <br /> ARCO Facility No 2130 Sample Matrix Water <br /> Surrogate Recovery Summary <br /> 9TEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFT Method <br /> Sample Name Date Analyzed Percent Recovery <br /> a a a-Trifluorotoluene <br /> PAW-11 (73) 08/10/93 $8 <br /> MW-2 (72) 08/11 /93 112 <br /> MW-3 (73) 08/10/93 89 <br /> MW-4 (74) 08/10/93 88 <br /> MW-5 (76) 08/12/93 39 <br /> MW-5 (76) 08/12/93 89 <br /> MW-6 (73) 08/10/93 39 <br /> MW-7 (72) 08/10j93 36 <br /> MS 08/10/93 82 <br /> DMS 08/10/93 84 <br /> Method Blank 08/10/93 87 <br /> Method Blank 08/11 /93 81 <br /> Method Blank 08112'93 88 <br /> CAS Acceptance Criteria 70 130 <br /> Approved by /{��i�tt„f Date4 T <br /> kJ <br />