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' COLUMBIA ANALYTICAL SERVICES.INC <br /> QA/QC Report <br /> iClient \14-0 ProdULIS Conlp,ul% <br /> P1°ILct 'l6, �TOCKTON/21775-234 O(12/TO#19350 00 Service lle ted: 2/24/9S9700 44 <br /> S.1mplL M,1t:ix 11 ucr <br /> Date Collected: 2124197 <br /> Date Received: 2/27/97 <br /> Date Extracted: NA <br /> Date Analyzed- NA <br /> Surrogate Recovery Summary <br /> BTEX MTBE and TPH as Gasoline <br /> EPA Methods 5030/8020/Cahfornia DHS LUFI'Method <br /> PID Detector FID Detector <br /> Percent Recovery Percent Recovery <br /> Sample NdmL Lab Code 4-Bromofluerobenzene (x,a,ac—Trd1uorotoluene <br /> MW-1 (53) 59700344-oo l 93 <br /> MW-2 (52) 59700344-002 96 <br /> 91 <br /> MW-3 (53) 59700344-003 94 <br /> �8 <br /> MW-4 94 91 <br /> ( ) 5970034-3-00.} 94 <br /> MW-5 (54) S9700344-005 93 <br /> MW-6 (42) 97 92 <br /> 59700344-OI16 92 101 <br /> MW-7 (47) 59700344-007 95 <br /> Batch QC (MS) 59700343-OOIMS92 <br /> Batch QC (DMS) 95 105 <br /> 59700343-U(11 DMS 95 <br /> Method Blank 5970228-WB1 i0196 <br /> 91 <br /> CAS Acceptance Limits 69-116 69-116 <br /> tiIJR2/0o011)4 <br /> Page 9 <br />