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® Submission 2005-05-0813 <br /> • Gas/BTEX Fuel Oxygenates b 82608 <br /> Y9 Y <br /> TRC Alton Geosclence- Irvine <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 05/31/2005 16 13 <br /> Conoco Phillips# 11192 <br /> Site 1403 Country Club Blvd, Stockton <br /> E Batch QC Report <br /> Prep(s) 50306 f, x A Test(s) 82608 , <br /> Matrix Spike ( MS/MSD ) __ ' "Y Water _ QC Batch#2005106110-2A 64 <br /> MS/IVISD - Lab ID 2005-06-0012-001 <br /> MS 2005/06/10-2A 64-040 Extracted 06/10/2005 _ d_ }Analyzed 06/10/2005 20 40 ra <br /> g Dilution x - 1 00 ' <br /> MSD 2005/06/10-2P 64-004 Extracted 06/10/2005 - Analyzed 06/10/2005 21 04 <br /> Dilution _ 1 00 <br /> Compound Conc ug1L Spk Leve Recovery% Limits% Flags <br /> M5 MSD Sample u 1L MS MSD I RPD Rec RPD MS MSD <br /> Methyl tert-butyl ether 233 307 ND 25 932 1228 274 65-165 20 R1 <br /> Benzene 21 3 279 ND 25 852 1 t 1 6 268 69-129 20 R1 <br /> Toluene 231 305 ND 25 924 1220 276 70-130 20 R1 <br /> Surrogate(s) <br /> 1 2-Dichloroethane-d4 530 609 500 1060 121 8 73-130 <br /> Toiuene-d8 515 605 500 11030 121 0 81-114 S7 <br /> Severn Trent Laboratories, Inc 06/20/2005 18 37 <br /> STL San Francisco,1220 Quarry Lane Pleasanton CA 94566 <br /> A part of s—.m Tnm Plc Tel 925 484 1919 Fax 925 484 1096,www stl-inc com"CA DNS FLAP#2496 Page 30 of 32 <br />