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Submission#: 2001-09-0545 <br /> Gas/BTEX Compounds by 8015M18021 <br /> r <br /> Batch QC report <br /> STL Chromalab <br /> Test Method: 8015M Prep Method: 5030 1220 Quarry Lane <br /> 8021 B Pleasanton,CA 94566 <br /> Tel 925 4841919 <br /> Laboratory Control Spike(LCS/LCSD) Water QC Batch#2001/10/03-01.05 Fox 925 484 1096 <br /> Analyzed: www.stl-inc.com <br /> LCS: 2001110/03-01.05-002 Extracted: 10/031200108.51 y 101031200108:51 -chromaiab.00m <br /> LCSD: 2001110103-01.05-003 Extracted: 10/03/2001 09:24 Analyzed: 10/03/200109:24 CA DMS ELAP#1094 <br /> Compound Cone.[uglL] Exp.Conc.[ug/L] Recovery rA] RPD CIrl.Llmits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD LCS LCSD <br /> Gasollne 545 524 500 500 109.0 104.8 3.9 75-125 20 <br /> Benzene 94.8 93.6 100.0 100.0 94.8 93.6 1.3 77-123 20 <br /> Toluene 96.7 94.5 100.0 100.0 96.7 94.5 2.3 78-122 20 <br /> Ethyl benzene 94.5 92.6 100.0 100.0 94.5 92.6 2.0 70-130 20 <br /> Xylene(s) 283 280 300 300 94.3 93.3 1.1 75-125 20 <br /> Surrogate(s) <br /> Triiluorotoluene 456 455 .500 500 91.2 91.0 58-124 0 <br /> 4-BromoOuorobenzene- 573 521 500 500 114.6 104.2 50-150 0 <br /> L. <br /> i <br /> II . <br /> I <br /> (r <br /> STL Chromalab is a part of Severn Trent Laboratories,Inc. Page 6 of 6 <br />