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I, <br /> Submission 2005-06-0159 <br /> STL <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> TRC Alton Geosclence- Irvine <br /> Attn Antu Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Project 41050001 FA20 Received 05/23/2005 12 30 <br /> Conoco Phillips#11192 <br /> Site 1267 Country Club Blvd , Stockton <br /> - Batch QC Report <br /> i <br /> Preps) 50308 r u - -- Test(s) 82606 <br /> 24 <br /> 'T <br /> fi <br /> Matrix Spike ( MS 1 MSD) z� Water_ �' QC Batch#2005105131-2D 62 <br /> 3 MS/MSD Lab IC 2005-05-0742-004 <br /> MS 2005105/31-2D 62-018 Extracted 05/31/2005 3 Analyzed 05/31/2005 19 18 <br /> _ _ - Dduttan 1 00 <br /> s MSD 2005105/31-2D 62-044 _Extracted 05/31/2005 _ Analyzed _ 05/31/2005 19 44 <br /> 'Dilution 1-00 <br /> Compound Conc u /L Spk Level Recovery% Limits% Flags <br /> MS MSD Sample ug/L M5 MSD RPD Rec RPD MS MSD <br /> Methyl tert-butyl ether 211 264 ND 25 944 1056 223 65-165 20 R1 <br /> Benzene 202 25 4 ND 25 808 1016 228 69-129 20 R1 <br /> Toluene 266 316 ND 25 106 4 1264 172 70-130 20 <br /> Surrogate(s) <br /> 1 2-Dichloroethane-t4 579 594 500 1158 1188 73-130 <br /> Toluene-d8 535 511 500 1070 1022 81-114 <br /> Severn Trent Laboratories, Inc 06114/200515 10 <br /> STL San Francisco`1220 Quant'Lane Pleasanton CA 94566 <br /> A pari of Sevem Trent Plc Tel 925 484 1919 Fax 925 484 1096'www stl-mc com'CA DHS FLAP#2496 Page 14 of 18 <br />