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STT Submission# 2003-09.0845 <br /> Gas/BTBXFuel Oxygenates by 82608 <br /> H2OGeol <br /> Attn Gary Lowe <br /> PO Box 2165 <br /> Livermore, CA 94551-2165 <br /> Phone (925)373-9211 Fax ( ) - <br /> Project Cheaperl#37 Received 09/24/2403 10 56 <br /> The Customer Company,TCC <br /> Site 15 East Grant Line Road,Tracy, California <br /> _..... _ Batch QC Report <br /> i•iii ! I�il-iqppppin� <br /> Prep(s) 50306 -y Test(s) 6260FAB <br /> °Laboratory Control Spike Water QC Batch#2003110101-1A 52 <br /> LCS r 2003110/01-1A62-025 Extracted 10/01/2003 Analyzed 10101/20030925 E <br /> LCSD 2003110101-1A 62-047 Extracted 10/0112003 Analyzed 10/01/2003 09-47 , <br /> Compound Conc ug/L Exp Conc Recovery% RPD CtH Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS I LCSD <br /> Methyl tent-butyl ether(MTBE) 253 268 25 1012 1072 58 65-165 20 <br /> Benzene 278 26 3 25 1112 1052 55 69-129 20 <br /> Toluene 265 261 25 1060 1044 15 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 446 468 500 892 936 76-114 <br /> Toluene-d8 530 518 500 11060 11036 88-110 <br /> Severn Trent Laboratories, Inc 10/01120031621 <br /> STL San Francisco-1220 Quarry Lane Pleasanton CA 94566 <br /> wa.wmr«w Tel 925 484 1919 Fax 925 484 1096•www stl-inc corn'CA DHS FLAP#2496 Page 11 of 13 <br />