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t <br /> r COLUMBIA ANALYTICAL SERVICES, INC <br /> QA/QC Report <br /> Client EMCON Associates Date Received 09/07/94 <br /> Project Federated-Franks Exxon/#2520-100 01 Date Extracted 09/08/94 <br /> Sample Matrix Water Date Analyzed 09/13/94 <br /> Work Order No K945445S <br /> Surrogate Recovery Summary <br /> Base Neutral/Acid Semivolatile Organic Compounds <br /> EPA Methods 3520/8270 <br /> Sample Name Lab Code Percent Re cove r y <br /> 2FP PHL TBP NBZ FBP TPH <br /> DW-1 K945445-001 72 79 97 75 77 104 <br /> DW-1 K945445-001 MS 77 75 95 81 78 97 <br /> DW-1 K945445-001 DMS 77 76 96 84 80 94 <br /> Laboratory Control Sample K940908-WL1 51 61 83 64 64 90 <br /> Method Blank K940908-W81 79 88 90 81 84 96 <br /> EPA Acceptance Criteria 21-100 10-94 10-123 35-114 43-116 33-141 <br /> 2FP 2-Fluorophenol <br /> PHL Phenol-D6 <br /> TBP 2,4,6-Tribromophenol <br /> NBZ Nitrobenzene-D5 <br /> FBP 2-Fluorobiphenyl <br /> TPH Terphenyl-D14 <br /> .��a4 �1 <br /> Approved by Date ! Zl a <br /> 00GU ) <br />