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kv IM <br /> Submission 2005-03-0925 <br /> GasIBTEX Fuel Oxygenates by 82606 <br /> TRC Alton Geosclence- Irvine <br /> Attn Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949)341-7440 Fax (949) 753-0111 <br /> Protect 41050001/FA20 Received 03/25/2005 17 23 <br /> Conoco Phillips#6981 <br /> Site 4707 Pacific Ave <br /> Batch QC Report <br /> Prep(s) 50306 Test(s) 8260E <br /> Matrix Spike ( MS!MSD ) Water QC Batch#2005!04105-4A 69 <br /> MS/MSD Lab ID 2005-03-0926-001 <br /> MS 2005/04/05-4A 69-006 Extracted 04/05/2005 Analyzed 04/05/2005 21 06 <br /> Dilution 1 00 <br /> MSD 2005/04105-4A 69-025 Extracted 04/05/2005 Analyzed 04105/2005 2125 <br /> �. . Dilution 1 00 <br /> Compound Conc u /L Spk Leve Recove % LiMLtS% Fla s <br /> Ms MSD Sample u /L MS MSD I RPD Reo RPD MS I MSD <br /> K' Methyl tert-butyl ether 317 264 KD 25 1268 1056 182 65-165 20 <br /> Benzene 262 227 ND 25 1048 908 143 69-129 20 <br /> Toluene 261 229 ND 25 1044 916 131 70-130 20 <br /> Surrogates) <br /> 1 2-Dichloroethane-d4 491 474 500 982 948 73-130 <br /> Toluene-d8 458 467 500 16 1934 1 81-114 <br /> Severn Trent Laboratories, Inc 04/08/20051635 <br /> STL San Francisco`1220 Quarry Lane Pleasanton,CA 94566 <br /> A part of S*�e Tref PIc Tel 925 484 1919 Fax 925 484 1096'www sti-inc corn"CA DHS ELAP#2496 Page 22 of 22 <br />