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COLUMBIA ANALYTICAL SERVICES, INC <br /> QA/QC Report <br /> Client EMCON Associates Dat(, Collected i/16/94 <br /> Project Federated-Franks Exxon/OZ287-00 Date Recen cd 5/18/94 <br /> Sample Matrix Water Date Exti acted NA <br /> Date Analyzed 5/24/94 <br /> Sen,jee Request SJ940600 <br /> Surrogate Recovery Summary <br /> Halogenated Volatile Organic Compounds <br /> EPA Methods 5030/601 <br /> Units ug/L(ppb) <br /> Pen cunt Recove,y <br /> Sample Name Lab Code 4-Bromofluorobenzene <br /> MW-1 SJ940600-1 106 <br /> MW-2 SJ940600-2 105 <br /> MW-3 SJ940600-3 105 <br /> MW-4 SJ940600-4 102 <br /> MW-5 SJ940600-5 94 <br /> Method Blank SJ940523-W1\4B 101 <br /> Method Blank SJ940524-WMB 107 <br /> CAS Acceptance Limits 76-138 <br /> w <br /> Approved By "l Date `]�/flL� (Z- <br /> 940 <br /> suR 1 1041594 <br /> 1921 Ringwood Avenue • Son Jose Collforn1oP919W Qf4lephone 4081437-2400 • Fox 4081437 9356 <br />