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®® STL Submission# 2003-11-0103 <br /> GaslBTEXIMTBE by 8260E <br /> SECOR-Sacramento <br /> Attn Rusty Benkosky <br /> 3017 Kilgore Road, Suite 100 <br /> Rancho Cordova. CA 95670 <br /> Phone (916)861-0400 Fax (916)661-0430 <br /> Project 77CP 60004 00 6981 Received 11/03/2003 17 05 <br /> Sit#6981 <br /> Site 4707 Pacific Ave Stockton, Ca <br /> Batch QC Report <br /> I WwwYwM�ww�w1 • <br /> Prep(s) 5030B Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch#2003111/11-iB 62 <br /> LCS 2003111/11-1 B 62-005 Extracted 11/11/2003 Analyzed 11/1112003 10 05 <br /> LCSD 2003111111-1 B 62-027 Extracted 11/11/2003 Analyzed 1111 112003 10 27 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> . LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tart-butyl ether(MTBE) 168 176 25 672 704 47 65-165 20 <br /> Benzene 18 6 208 25 74 4 83 2 11 2 69-129 20 <br /> Toluene 189 220 25 75 6 88 0 152 70-130 20 <br /> Surrogates(s) <br /> 1 2-Dichloroethane-d4 477 460 500 954 92 0 76-114 <br /> Toluene-d8 1485 499 500 97 0 199 8 1 1 88-110 <br /> Severn Trent Laboratories, Inc 11/1412003 15 00 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> APO.1 8o Th Ptt Tel 925 484 1919 Fax 925 484 1096'www stl-Inc corn"CA DHS ELAN 2496 Page 6 of 7 <br />