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STL ChromaLab Submission #- 2009-04-0459 <br /> Enwronmental Services(CA 1094) <br /> To Wright Environmental Services Inc Test Method 8260E <br /> Attn Mana Reid Prep Method 5030E <br /> Batch QC Report <br /> Fuel Oxygenates by 8260E <br /> Laboratory Control Spike (LCSILCSD) Water QC Batch # 2001104125-01 27 <br /> LCS 2001104125-01 27-002 Extracted 04/25/2001 14 49 Analyzed 04/25/2001 14 49 <br /> LCSD 2001104125-01 27-003 Extracted 04/25/2001 15 30 Analyzed 04/25/2001 15 30 <br /> I Compound Conc [ug/L] Exp Conc [ug/L] Recovery[%] RPD i Ctr! Limits[%] Flags <br /> LCS I LCSD LCS LCSD LCS i LCSD! [%] !Recovery 'RPD LCS i LCSD , <br /> Methyl tent-butyi ether 499 490 500 500 99 8i 980 18 65-165 20 I <br /> i <br /> Benzene i 45 9 48 5 500 500 1 91 8r 97 0: 55 69-129 20 <br /> Toiuene 421 1440 500 500 84 2' 880 4 4 70-130 20 <br /> Suri%gates-I <br /> 1 2-Qichloroethane-d4 554 - 548 500 500 110 8E 1096 76-114 <br /> Toluene-d8 478 512 500 500 95 6r 1024 88-110 <br /> I <br /> • <br /> 1220 Quart'Lane`Pleasanton CA 94566-4756 <br /> Teiephone (925)484-1919*Facsimile (925)484-1096 <br /> Pnnted on 04/3012001 13 27 Page 36 of 39 <br />