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S T L <br /> Submission#: 2003-08-0004 <br /> Gas/BTEX Fuel Oxygenates by 8260B (MC12) <br /> Blaine Tech Services, Inc <br /> Attn Leon Gearhart <br /> 1680 Rogers Avenue - <br /> San Jose, CA 95112-1105 <br /> Phone (408)573-0555 Fax (408) 573-7771 <br /> Project 030730-JB1 Received: 07/31/2003 14 45 <br /> 97402247 <br /> Site 2375 W Grant Line Rd , Tracy <br /> I- - <br /> x <br /> 5� s <br /> Compound Conc ug1L Exp Conc Recovery% RPD Ctri Limits% Flags <br /> LGS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 250 271 25 1000 1084 81 69-129 20 <br /> Toluene 261 275 25 1044 1100 52 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 212 224 25 848 896 55 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 458 471 500 916 942 76-130 <br /> Toluene-d8 523 540 500 1046 1080 78-115 <br /> i <br /> Sevem Trent Laboratories, Inc 08/12/2003 14 44 <br /> STL San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> A W of$wVM TMnt F t Tel 925 484 1919 Fax 925 4841096'www stl-mc com•CA DHS FLAP#2496 Page 7 of 8 <br />