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,1 ,1 <br /> „ <br /> " COLUMBIA ANALYTICAL SERVICES.INC <br /> QA/QC Report <br /> Client EMCON Associates Service Request: 5950271 <br /> Project- ARCO Faciiit% No 43.1/EMCON Project No 1775-700 01 Date Collected: 3/2/95 <br /> Sampie MAtrix Water Date Received: 3/3/95 <br /> Date Extracted: NA <br /> Date Analwed: 3/14/95 <br /> Matrix Smke/Duplicate Matrix Spike Summary <br /> BTE <br /> EPA Methods 5030/8020 <br /> Units ug/L(ppb) <br /> Sample Name W-2B (86') <br /> [_ab Code 5950271-004 <br /> Percent Recovery <br /> CAS Relative <br /> Spike Leiel Sample Spike Result Acceptance Percent <br /> WNW MS DMS Result MS DMS MS DMS Limits Difference <br /> Benzene 25 25 ND 25 1 253 100 101 75-135 1 <br /> Toluene 25 25 ND 246 24 8 98 99 73-136 1 <br /> Ethvibenzenc 25 25 ND 24 6 248 98 99 69-142 1 <br /> i <br /> Approved By <br /> U\fSIS1060194 <br /> Page 7 <br /> 10,74 A1nnWnnr1 Avcn"ne • C.,,., L. r..ls_. .. nG��� r..i_..w_ nn� .. ..n <br />