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1 11 <br /> •r �o Submission 2005-03-0925 <br /> Gas/BTEX Compounds by 8015M18021 <br /> I <br /> TRC Alton Geoscience- Irvine <br />—_ Attn Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949)341-7440 Fax (949) 753-0111 <br /> Project 410500011FA20 Received 03/25/2005 17 23 <br /> Conoco Phillips#6981 <br /> Site 4707 Pacific Ave <br /> Batch QC Report <br /> Prep(s) 5030 Test(s) 8015M <br /> Matrix Spike ( MS I MSB) Water QC Batch#2005104107-01 05 <br /> MW-9 >> MS Lab ID 2005-03-0925-014 <br /> MS 2005104107-01 05-032 Extracted 04/08/2005 Analyzed 04/08/2005 01 54 <br /> Dilution 1 00 <br /> MSD 2005104107-01 05-033 Extracted 04/08/2005 Analyzed 04/08/2005 02 27 <br /> Dilution 100 Q <br /> Compound Conc u IL Spk Leve Recove % Limits% Fla s <br /> MS MSD Sample u 1L MS MSD RPD Rec RPD MS MSD <br /> GRO(C6-C12) 220 207 ND 250 880 828 61 65-135 20 <br /> Surrogate(s) <br /> 4-Bromofluorobenzene-FID 461 457 1 500 1922 914 50-150 <br /> Severn Trent Laboratories, Inc 04/08/2005 14 2! <br /> STL San Francisco•1220 Quarry Lane Pleasanton,CA 94566 <br /> A Part of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096'www stl-mc com'CA DHS ELAN 2496 Page 25 of 26 <br />