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' COLUMBIA ANALYTICAL SERVICES IN <br /> C. <br /> QA/QC Report <br /> Tient: EMCON Service Request: L92343 <br /> Protect: ARCO Products Company#2168/#0805-146 04 Date Collected: NA <br /> Sample Matrix: Soil Date Received: NA <br /> Date Extracted: NA <br />' Date Analyzed: 5/16/95 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/Modified 8015/California DHS LUFT Method <br /> Units mg/Kg(ppm) <br /> Sample Name Batch QC <br />' Lab Code L952322-001 <br /> Percent Recovery <br /> CAS Relative: <br />' Spike Level Sample Spike Result Acceptance Percent <br /> AnAly#e M5 DMS Result MS DMS MS DMS Limits Difference <br /> Benzene 00800 00800 ND 00598 00650 75 81 39-150 8 <br /> Toluene 00800 00800 ND 00611 00670 76 84 46-148 9 <br /> Ethylbenzene 00800 00800 ND 00666 00740 83 93 32-160 11 <br /> TPH as Gasoline 200 2 00 ND 162 170 81 85 70-140 5 <br /> NA Not Applicable <br /> TPH Total Petroleum Hydrocarbons <br /> ND None Detected at or above the reporting limit <br /> Approved By Date <br /> OMS ISUD/06I3% <br /> L95n43 XLS 801111n=5119195 PWI40 06 <br /> 6925 CANOGA AVENUE CANOGA PARK, CA 91303 818 587 5550 fAX 818 587-5555 <br />