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r ® Submission# 2004-01-0703 <br /> S JL L• Gas/BTEX Fuel Oxygenates b 8260B <br /> Y9 Y <br /> TRC Alton Geoscience <br /> Attn Antu Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949)753-0111 <br /> Project 41050001 FA20 Received 01/27/2004 13 30 <br /> Conoco Phillips#01205 <br /> Site 16470 Cambridge St , Lathrop <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260FAB <br /> Matrix Spike( MS 1 MSD } Water QC Batch #2004102104-02 69 <br /> MW-10 » MS Lab ID 2004-01-0703 -008 <br /> MS 2004102104-02 69-058 Extracted 02!0412004 Analyzed 02/04/2004 22 58 <br /> Dilution 1 00 <br /> MSD 2004102104-02 69-017 Extracted 02/04/2004 Analyzed 02/04/2004 23 17 <br /> Dilution 1 00 <br /> Compound Conc ug/L Spk Leve Recove % Limits% Flags <br /> i <br /> MS MSD Sample ug/L MS MSD I RPD Rec RPD MS MSD <br /> Benzene 204 206 ND 250 816 82 4 10 69-129 20 <br /> Toluene 229 227 114 250 87 0 86 2 09 70-130 20 <br /> Methyl tert-butyl ether 22 7 237 ND 250 908 948 43 65-165 20 <br /> Surrogate(s) <br /> Toluene-d8 487 487 500 974 974 88-110 <br /> 1 2-Dichloroethane-d4 507 516 500 11014 1033 76-114 <br /> Severn Trent Laboratories, Inc <br /> 02/0912004 17 51 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A W 01 5—M Trent Pic Tel 925 484 1919 Fax 925 4134 1096'www stl-inc com'CA DHS ELAP#2496 Page 22 of 23 <br />