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s <br /> Submission# 2004-02-04fifi <br /> S TL <br /> GasIBTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geosclence <br /> Attn Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Project 41050001 FA20 Received 02/13/2004 15 51 <br /> Conoco Phillips#08671 <br /> Site 8606 Thornton Rd , Stockton <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 8260FAB <br /> Matrix Spike ( MS 1 MSD ) Water QC Batch#2004/02/21-1C.64 <br /> MW-5 >> MS Lab ID 2004-02-0466-005 <br /> MS 2004102121-1C 64-048 Extracted 02/21/2004 Analyzed 02/21/2004 13 48 <br /> Dilution 1 00 <br /> • MSD 2004/02!21-1C 64-010 Extracted 02/21/2004 Analyzed 02/21/2004 14 10 <br /> Dilution 100 <br /> Compound Conc ug!L Spk Level Recove % Limits% Fla s <br /> MS MSD Sample u 1L M5 MSD RPD Rec RPD MS MSD <br /> Methyl tert-butyl ether 191 208 ND 25 764 832 85 65-165 20 <br /> Benzene 225 229 ND 25 900 916 18 69-129 20 <br /> Toluene 230 237 ND 25 920 948 3 0 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 394 410 500 788 820 76-114 <br /> Toluene-d8 494 475 1 500 1988 1950 1 188-110 <br /> Severn Trent Laboratories, Inc 02/27/2004 11 55 <br /> STL San Francisco'1220 Quant'Lane,Pleasanton,CA 94566 <br /> A PSR of Sewm Tmnt Pk Tel 925 484 1919 Fax 025 484 1096"www stl-Inc com'CA DHS ELAP#2496 Page 16 of 17 <br />