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n ! <br /> SL <br /> Submission 2005-02-0795 <br /> T 1• <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> TRC Alton Geoscience- Irvine <br /> Attn Antu Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949)341-7440 Fax (949) 753-0111 <br /> Project 410500011FA20 Received 02124120051510 <br /> Conoco Phillips#5886 <br /> Site 2701 W March Ln , Stockton <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 82608 <br /> Matrix Spike ( MS 1 MSD ) Water QC Batch #2005103107-2A 64 <br /> MW-8S >> MS Lab ID 2005-02-0795-001 <br /> MS 2005103107-2A 64-059 Extracted 03/07/2005 Analyzed 03/07/2005 19 52 <br /> Dilution 1 00 <br /> MSD 2005103/07-2A 64-060 Extracted 03/07/2005 Analyzed 03/07/2005 20 14 <br /> Dilution 1 00 <br /> Compound Conc uglL Spk Level Recove % Limits% Flags <br /> M5 MSD Sample u /L MS MSD RPD Rec RPD M5 MSD <br /> Methyl tent-butyl ether 241 339 ND 25 964 1356 338 65-165 20 R1 <br /> Benzene 230 298 ND 25 920 1192 258 69-129 20 R1 <br /> Toluene 237 333 ND 25 948 1332 337 70-130 20 R1,M4 <br /> surrogate(s) <br /> 1 2-Dichloroethane-d4 530 538 500 1060 1076 73-130 <br /> Toluene-d8 514 488 500 102 8 97 6 1 81-114 <br /> Severn Trent Laboratories, Inc 03/11/2005 15 26 <br /> STL San Francisco"1220 Quarry Lane Pleasanton CA 94566 <br /> A pen of seven Trent Pic Tel 925 484 1919 Fax 925 484 1096*www stl-inc com*CA DHS ELAP#2496 Page 28 of 31 <br />