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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client EMCON Associates Service Request- S950210 <br /> Project %RCO FaccliD, No 2168/EMCON Project No 1--5-234 01 Date Collected 2/16/95 <br /> Sample Matrix Nater Date Received 2/21/95 <br /> Date Extracted: NA <br /> Date An.tivzed: 2/27/95 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> TPH as Gasoline <br /> EPA Methods 5030/Califorrua DHS LUFT Method <br /> Units ug/L c ppb} <br /> Sample Name Batch QC <br /> Lab Code S950196-002 <br /> Percent Recovery <br /> CAS Relative <br /> Spike Level Sample Spike Result Acceptance Percent <br /> Analvte MS DMS Result MS DMS MS DMS Limits Difference <br /> Gasoline 250 250 ND 260 253 104 101 67-12I 3 <br /> ZApproved By Date 7 <br /> D%IS[5/060194 <br /> Page 7 <br /> 4074 0rn—y—A A--- C .n In... ! -la MCA q• T_ _4, �ne �n� n•nn - r_ ir.arny nnet <br />