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STLSubmission# 2004-01-0337 <br /> Gas1BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience <br /> Attn An1u Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949)753-0111 <br /> Project 41050001FA20 Received 01/13/20040958 <br /> Conoco Phillips#4409 <br /> Site 1502 North EI Dorado Stockton <br /> Batch QC Re ort - <br /> c u t 1 <br /> Prep(s) 50306 Test(s).8260FAB <br /> f, 3 ; � S i ,• � n <br /> Laboratory Control Spike, Water ` �� ; 4C Batch #2004101122.2A 65 <br /> LCS 2004101122 A 65-611 ' ;'= Extracted 01/22/2004 -, E Analyzed O1f22120041911 <br /> LCSD 2004/01/22 2A�5r036 __ _ __ Extracted a1f22f200�4 - Q' Analyzed_U1I22f2044 19 36 <br /> Compound Conc ug/L Exp Conc Recovery% RPDJ Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec I RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 241 249 25 964 996 33 65-165 20 <br /> Benzene 260 237 25 1040 948 9 3 69-129 20 <br /> Toluene 242 247 25 968 988 2 0 70-130 20 <br /> Surrogates(s) <br /> 1 2-Dichloroethane-d4 420 467 500 840 934 76-114 <br /> Toluene-d8 476 508 500 1952 1101_2 1 88-110 <br /> Severn Trent Laboratories, Inc 03/01/2004 09 03 <br /> STL San Francisco'1220 Quarry Lane Pleasanton,CA 94568 <br /> A pert W Sevem Trem Pic Tel 925 484 1919 Fax 925 484 1096'www stl-ine corn'CA DHS FLAP#2496 Page 17 of 19 <br />