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STT Submission: 2005-10-0515 <br /> Gas1BTEX Fuel Oxygenates by 82608 <br /> TRC Alton Geoscience-Irvine <br /> Attn.:Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone: (949)341-7440 Fax: (949)753-0111 <br /> Project: 410500011FA20 - Received: 10/25/2005 16:05 <br /> Conoco Phillips#11195 <br /> Site: 16500 S. Interstate 5, Lathrop, CA <br /> Batch QC:ROort <br /> Prep(s): 503013 Test(s):82608 <br /> Matrix Spike MS./MSD) --Water -2B.71QC Batch#2005110/26 <br /> MS/MSD- Lab 15: 2005-10-0484-003 <br /> MS: 2005110126-2B.71=048 Extracted: 10/26/2005 Analyzed:`. 10/26/2005 21.48_ <br /> Dilutioh 50.00 <br /> MSD: `,2005/i0126-2B:7[-015 Extracted:,10/26/2005 .:Analyzed::: 101261200522:15 <br /> Dilution: 50.00 <br /> rJ' Compound Conc. ug1L Spk.Leve Recovery% Limits% Flags <br /> Ms MSD Sample ug1L Ms MSD RPD Roc. RPD Ms MSD <br /> Methyl Cert-butyl ether 1140 1210 45 1250 87.6 93.2 6.2 65-165 20- <br /> I <br /> Benzene 1180 1240 1.73 1250 94.3 99.1 5.0 69-129 20 <br /> Toluene 1130 1190 ND 1250 90.4 95.2 5.2 70-130 20 . <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 459 465 500 91.8 93.0 73-130 <br /> TOluene-d8 518 503 500 103.6 100.6 81-114 <br /> I <br /> Severn Trent Laboratories, Inc. 10/31/2005 15:29 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> APers of S.—Tr ft Plc Te]925 484 1919 Fax 925 484 1096`www.stl-inc.com.CA DHS ELAP4 2496 - Page 33 of 37 <br /> 5 <br />