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STL Submission 2005-07-0294 <br /> r <br /> Gas1BTEX Fuel Oxygenates by 82608 <br /> TRC Alton Geoscience-Irvine <br /> Attn Anju Far#an <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949)349-7440 Fax (949)753-0111 <br /> Project 41050001 FA20 Received 07/12/2005 18 00 <br /> Conoco Phillips#4409 <br /> Site 1502 N Fl Dorado St Stockton <br /> ! - Batch QC Report <br /> Prep(s) 503013 _ _ Test(s) 82608 , <br /> Matrix Spike( MS 1 MSCI ) w Water QC Batch#2005!0712$-1C 64 <br /> MS/MSD - Lab iD _ 2005-07-0537-003 ; <br /> MS 2005/07128-1C 64-060 Extracted 07/28/2005 Analyzed 07/2812005 11 05 <br /> r <br /> Dilution 1 00 <br /> MSD. 2065107/28-1C 64-061 -Extracted 07/28/2005 Analyzed 07/2812005 11 30 <br /> E <br /> Dilution <br /> 100 <br /> Compound Cone ug1L Spk Leve Recovery% Limits% Fla s <br /> MS MSD Sample ug/L MS MSD RPD Rec RPD MS MSD <br /> Benzene 259 269 ND 25 1036 1076 38 69-129 20 <br /> Toluene 246 268 ND 25 98 4 1072 86 70-130 20 <br /> Methyl tent-butyl ether 289 323 ND 25 1156 1292 Ill 65-165 20 <br /> Surrogate(s) <br /> 1 2-Dichloroethane-d4 544 547 500 1088 1094 73-130 <br /> Toluene-d8 395 428 500 790 85 6 81-114 S8 <br /> • Severn Trent Laboratories, Inc 07/28/2005 17 27 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> APart°i Sween Trent M Tel 925 484 1919 Fax 925 484 1096"www stl-inc corn"CA DHS ELAP#2496 Page 40 of 41 <br />