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STL <br /> Submission 2005-07-0294 <br /> m <br /> GasIBTEX Fuel Oxygenates by 8260B , <br /> TRC Alton Geoscience- Irvine <br /> Attn Anlu Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949)753-0111 <br /> Project 41050001 FA20 Received 07/12/2005 18 00 <br /> Conoco Phillips#4409 <br /> Site 1502 N EI Dorado St Stockton <br /> § Batch QC Report <br /> Preps) 5030B Test(s) 8260E <br /> Matrix Spike(N S l NASI ) Water QC Batch#it 2005107122-2A 62 <br /> MSIMSD <br /> Lab ID 204507-0349-004 <br /> MS 2005107122-2A 62-027 Extracted 07/22/2005 Analyzed 07122/2005 21 27 <br /> - Dilution 100 <br /> MSD 2005107/22-2A 62-053 Extracted 07/22/2005 Analyzed 07/22/2005 21 53 <br /> _ Dilution 100 <br /> Compound Canc ug1L ._ k Leve � Recove % Limas% Flags <br /> MS MSD Sample ug/L MS MSb I RPD Rec RPD MS MSD <br /> Methyl tert butyl ether 261 227 ND 25 1044 908 139 65-165 20 <br /> Benzene 278 241 ND 25 1112 964 143 69-129 20 <br /> Toluene 293 248 ND 25 1172 992 166 70-130 20 <br /> Surrogate{s} <br /> 1 2-Dichloroethane-d4 447 457 500 894 914 73-130 <br /> Toluene-d8 1486 485 t500 1973 1970 1 81-114 <br /> Severn Trent Laboratories, Inc 07/2812005 17 27 <br /> STL San Francesco"1220 Quarry Lane Pleasanton,CA 94566 I <br /> Apart&Seem Trent Plc Tel 925 4134 1919 Fax 925 484 1096'www stl-mc corn'CA DHS FLAP#2496 Page 34 of 41 <br />