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n. <br /> t� �r�rsT Submission# 2003.11.0103 <br /> GaslBTEXIMTBE by 8260B <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)861-0430 <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 /> Prep(s) 5030B Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch#2003111111-2A 62 <br /> LCS 2003!11111-2A 62-001 Extracted 11/11/2003 Analyzed 11/11/2003 21 01 <br /> LCSD 2003111111-2A 62-023 Extracted 11/11/2003 Analyzed 11/11/2003 2123 <br /> Compound Conc ug1L Exp Cone Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS i LCSD % Rec RPD I LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 249 227 25 996 908 92 65-165 20 <br /> Benzene 26 9 246 25 1076 984 89 69-129 20 <br /> Toluene 28 7 261 25 1148 1044 9 5 70-130 20 <br /> Surrogates(s) <br /> 1 2-Dichloroethane-d4 477 476 500 954 95 2 76-114 <br /> Toluene-d8 485 483 500 97 0 96 6 88-110 <br /> Severn Trent Laboratories, Inc <br /> 11114/2003 15 00 <br /> STL San Francisco`1220 Quarry Lane,Pleasanton CA 94566 <br /> Apv S-Tm(Pic Tel 925 484 1919 Fax 925 484 1096'www stl Inc corn'CA DHS FLAP#2496 Page 7 of 7 <br />