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Submission # 2003-06-0900 <br /> ,W 1.3 ZZESTL <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> Gettler Ryan <br /> Attn Deanna Harding <br /> 6747 Sierra Cotirt Suite J <br /> Dublin, CA 94568 <br /> Phone (925) 551-7444 Fax (925) 551-7899 <br /> Project 180138 80 Received 06/27/2003 16 10 <br /> Conoco #6981 <br /> Site 4707 Pacific Ave , Stockton <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch # 2003107117-02 65 <br /> 'I" <br /> LCS 2003107117-02 65-029 Extracted 07/17/2003 Analyzed 07/17/2003 22 29 <br /> LCSD , 2003107117-02 65-029 Extracted 07/17/2003 Analyzed 07/17/2003 22 29 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 20 3 ❑ 250 81 2 ❑ ❑ 69-129 20 ❑,0 <br /> Toluene 196 ❑ 250 784 ❑ ❑ 70-130 20 ❑,❑ <br /> Methyl ter►-butyl ether(MTBE) 188 ❑ 25 0 752 ❑ ❑ 65-165 20 ❑,❑ <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 472 ❑ 500 944 n 0 76-114 ❑,❑ <br /> Toluene-d8 492 D 500 1984 o © 88-110 ❑r❑ <br /> Severn Trent Laboratories, Inc 07118120031427 <br /> STL San Francisco' 1220 Quarry Lane Pleasanton CA 94566 page 30 of 32 <br /> A pen d Sewrn Treni Plc Tel 925 484 1919 Fax 925 484 1096'www stl-inc com a CA DHS ELAP4 2496 <br />