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COLUMBLA ANALYTICAL SERVICES.INC. <br /> Q.k•QC Report <br /> • Client: EMCON Associates Service Request: 5950079 <br /> Project: Federated-Manteca/ Protect No. _-_0-100.01 Date Collected: 1/23195 <br /> Sample !Matrix: Water Date Received: 1/24/95 <br /> Date Extracted: NA <br /> Date Analyzed: 1/31/95. 2/l/95 <br /> Surrogate Recovery Summary <br /> BZEX and TPH as Gasoline <br /> EPA Methods -c)30/80201Ca1ifornia DHS LT-TT Method <br /> Percent Recovery <br /> Sample ,dame Lab Code UICL.LX-Trifluorotoluene <br /> Influent 5950079.001 99 <br /> Effluent 5950079-002 95 <br /> Method Blank 5950131-WB 1 92 <br /> Method Blank 5950201-WB1 95 <br /> CAS Acceptance Limits: 69-116 <br /> Approved By <br /> : Date: <br /> tiliR 11pd2991 � <br /> Page 4 <br />