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mmm <br /> M ® STL Submission# 2004-03-0449 <br /> Gas/BTEX Fuel Oxygenates by 8260B (C6-C12 <br /> ) <br /> Cambria Environmental Sonoma <br /> Attn Joe Neely <br /> 270 Perkins Street <br /> Sonoma, CA 95476 <br /> Phone (707)933-2361 Fax (707)935-6649 <br /> Project 0813 Received 03/12/2004 1140 <br /> SAP#136186 <br /> Site 3725 Tracy Blvd ,Tracy <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260E <br /> Laboratory Control Spike Soil QC Batch#2004103/16.1B.69 <br /> LCS 2004103/16-1 B 69-029 Extracted-03/16/2004 Analyzed 03/16/2004 07 29 <br /> LCSD 2004/03/16-18 69-048 Extracted 03/16/2004 Analyzed 03/16/2004 07 48 <br /> Compound Conc mg/Kg Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 00546 00500 005 1092 1000 8 8 69-129 20 <br /> Toluene 00526 00488 005 1052 976 7 5 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 00549 00513 005 1 1098 1026 6 8 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 477 473 500 954 94 6 70-121 <br /> Toluene-d8 492 490 500 1984 1980 1 181-1171 <br /> Severn Trent Laboratories, Inc 03/25/2004 21 38 <br /> STL San Francisco•1220 Quarry Lane,Pleasanton,CA 94566 <br /> A P-1 Of-S-V-M Trrrt Plc Tel 925 484 1919 Fax 925 484 1096"www stl-inc corn`CA DHS ELAN 2496 Page 13 of 16 <br />