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S I I L Submission 2005-06-0159 <br /> p tit <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience- Irvine <br /> Attn An1u Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Protect 41050001 FA20 Received 05/23/2005 12 30 <br /> Conoco Phillips #11192 <br /> Site 1267 Country Club Blvd , Stockton <br /> r � - Batch QC Report �� E <br /> Prep(s)- 50308 - - �� - Test(s) 8260E <br /> a3 � <br /> Matrix Spike ( MS 1 MSD) _ Water QC Batch#20 0510 6102-1 B 69 <br /> MS/MSD - - Lab ID 2005-05-0669 -006 <br /> MS 2005106102-18 69-040 Extractedr 06/02/2005 Analyzed 06/02/2005 11 40 <br /> Dilution a 1 00 1 <br /> MSD 2005/06102-18 69-059 _ Extracted 06/02/2005 Analyzed 06/02/2005 11 59 ; <br /> Dilution 1 00 <br /> Compound Conc ug/L Spk Level Recovery% Limits% Flags <br /> M5 MSD Sample ug/L MS MSA RPD Rec RPD MS MSD <br /> Methyl tert-butyl ether 233 263 ND 25 932 1052 121 65-165 20 <br /> Benzene 222 246 ND 25 888 984 10 3 69-129 20 <br /> Toluene 228 250 ND 25 91 2 1000 92 70-130 20 <br /> Surrogate(s) <br /> 1 2-Dichioroethane-d4 484 490 500 968 980 73-130 <br /> Toluene--d8 536 523 500 11072 11046 61-114 <br /> I <br /> Severn Trent Laboratories, Inc 06/14/2005 15 10 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A part of Sevem Trent Plc Tel 925 484 1919 Fax 925 484 1096'www stl-inc corn'CA DWS ELAP#2496 Page 16 of 18 <br />