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Submission# 2003-10-0407 <br /> Emmum STL <br /> • Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geosctence <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 10/09/2003 15 25 <br /> Conoco Phillips#4409 <br /> Site 1502 N EI Dorado Street <br /> Batch QC Report <br /> Prep(s) 5030E Test(s) 8260FAB <br /> Matrix Spike ( MS/MSD Water QC Batch#2003110121-02.68 <br /> MW-3 >> MS Lab#D, 2003-10-0407- 004 <br /> MS 2003110/21-02 68-038 Extracted 10122/2003 Analyzed 10/2212003 02 38 <br /> Dilution 1 00 <br /> • MSD 2003110121-02 68-059 Extracted 10/2212003 Analyzed 10/2212003 02 59 <br /> Dilution 1 00 <br /> Compound Conc ugtL Spk Level Recovery% Limits% Flags <br /> MS MSD Sample ug/L MS MSD RPD Rec RPD MS MSD <br /> Benzene 255 254 ND 25 0 1020 1016 04 69-129 20 <br /> i <br /> Toluene 26 3 258 ND 25 0 1052 1032 19 70-130 20 <br /> Methyl tert-butyl ether 41 3 46 4 235 25 0 71 2 916 251 65-165 20 mso <br /> Surrogate{s} <br /> 1,2-Dichloroethane-d4 492 515 500 984 1030 76-114 <br /> Toluene d8 517 526 500 1034 1052 88-110 <br /> Severn Trent Laboratories, Inc 01108,20041321 <br /> STL San Francisco' 1220 Quarry Lane Pleasanton CA 94566 <br /> Apart a Sa T-e g Pic Tel 925 484 1919 Fax 925 484 1096'www sli-inc com`CA DHS ELAN 2496 Page 13 of 14 <br />