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®® Submission 2005-07-0294 <br /> SIL <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 /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Project 41050001 FA20 Received 07/12/2005 18 00 <br /> Conoco Phillips#4409 <br /> Site 1502 N EI Dorado St Stockton <br /> r - Batch QG Report _ <br /> 1 Preps) 50308 _ Test(s) 8260E <br /> ,Laboratory Control Spike Water QC Batch#2005/07128-1C.64 <br /> LCS 2005167/28-IC 64059 Extracted 07/28/2005 Analyzed 07/2812005 07 59 ' <br /> LCSD_ 2005107128-1 C 64-050 Extracted-07!28!2005 Analyzed 07/28/2005 08 50 <br /> Compound Conc ug/L Exp Cone Recovery% RF`DJ Ctrf Limits% Flags <br /> I <br /> LCS LCSD LCS LCSD % Rec I RIND LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 302 28 1 25 1208 1124 72 65-165 20 <br /> . Benzene 28 7 248 25 1 1148 992 146 69-129 20 <br /> Toluene 267 262 25 1068 1048 19 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 531 486 540 1062 972 73-130 <br /> Toluene-d8 408 1447 1500 1816 1894 1 81-114 <br /> Severn Trent Laboratories, Inc 07/28/2005 17 27 <br /> STL San Francisca-1220 Quarry Lane Pleasanton CA 94566 <br /> A part a 1Wd Pk Tel 925 484 1919 Fax 925 484 1096*www stl-inc corn*CA DHS F=LAP#2496 Page 32 of 41 <br />