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COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> K <br /> ARCO Products Company Service Request: L9901978 <br /> Client: Date Collected- NA <br /> Project: WA#24406 0016020-Manteca Date Received: NA <br /> Sample Matrix* Soil Date Extracted: NA <br /> Date Analyzed- 512/99 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> BTEX and TPH as Gasoline <br /> Units mg/Kg(ppm) ' <br /> Sample Name Batch QC Basis Wet <br /> Lab Code L9901977-003MS, L9901977-003DMS <br /> Test Notes <br /> Percent Recovery ' <br /> CAS Relative <br /> p <br /> Prep Analysis <br /> Spike Level Sample Spike Result Acceptance Percent Result , <br /> Anatyte Method Method MRL MS DMS Result MS DMS MS DMS Limits Difference Notes <br /> Benzene EPA 5030 8021B 0 005 00127 00127 ND 0 0107 0 00973 84 77 39-150 10 <br /> Toluene _ EPA 5030 8021B 0005 0 140 0 140 ND 0 119 0 107 85 75 46-148 11 <br /> Ethylbenzene EPA 5030 8021B 0 005 00352 00352 ND 00210 00189 -60 54 32-160 12 <br /> TPH as Gasoline EPA 5030 8015M 01 200 2 00 ND 1 24 1 12 - 62 56 70-140 _11 A4 <br /> e <br /> A4 Outside of acceptance limits The LCS was acceptable,therefore,data was approved <br /> I qt 4 <br /> �� Date <br /> Approved By <br /> Page No <br /> 01978VOH AS1 DMS V4199 <br />