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MEN STL <br /> Submission 2005-10-0397 <br /> • Gas/BTEX Fuel Oxygenates by 82608 <br /> TRC Alton Geosclence- Irvine <br /> Attn Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> i <br /> Phone (949)341-7440 Fax (949)753-0111 <br /> Project 41050001/FA20 Received 10/17/2005 17 45 <br /> Conoco Phillips#08671 <br /> Site 8606 Thorton <br /> Batch QC Report <br /> Prep(s) 5030E Test(s) 8260E <br /> Matrix Spike (MS 1 MSD} Water QC Batch#2005110!21-2A 65 <br /> MSIMSD Lab 1D 2005-10-0395-003 <br /> MS 2005110/21-2A 65-042 Extracted 10/21/2005 Analyzed 10/2112005 20 42 <br /> Dilulton' 5000 <br /> MSD 2005110121-2A 65-008 E)ctracted-10/21/2005 Analyzed 10/2'!/2005 21 08 <br /> Dilution- 5000 <br /> Compound Conc ug!L SEk Leve Recove % Limits% Fla s <br /> MS MSD Sample u /L MS MSD RPD Rec RPD MS MSD <br /> Methyl tert-butyl ether 405 384 188 25 868 784 102 65-165 20 <br /> Benzene 210 211 ND 25 84 0 844 05 69-129 20 <br /> Toluene 220 217 ND 25 88 0 868 14 70-130 20 <br /> Surrogate(s) <br /> 1 2-Dichloroethane-d4 401 411 500 802 822 73-130 <br /> Toluene-d8 1456 453 1 1 500 1912 1906 1 81-114 <br /> • Severn Trent Laboratories, Inc 10/29/2005 12 35 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A pert&,R"m Twm Plc Tel 925 484 1919 Fax 925 484 1096'www stl-mc corn'CA DHS FLAP#2496 Page 19 of 21 <br />