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STLSubmission# 2005-08-0134 <br /> • Gas/BTEX Fuel Oxygenates by 8260B <br /> URS Corporation <br /> Atfi Vern Elarth <br /> 2870 Gateway Oaks Drive, Suite 300 <br /> Sacramento, CA 95833 <br /> Phone (916)679-2000 Fax (916)679-2900 <br /> Project Consultant Project No 38466463 Received 08/04/2005 09 05 <br /> BP Facility No 2186 <br /> Site 3212 N California Street, Stockton, CA <br /> 95204 <br /> �4;�e �' �`' 1 i <br /> " _2w Batch QC«Report �� <br /> �Prep�)(s) 50306 q �� � � ,ri Ac; <br /> h� �, E; 4.' 'ty''-y` rte_ ; .rdf� am '� �.�f K."„s '�TeSt(S) 82606 <br /> p y p i'Yi 94 -Ar— #.9.., f." N..Vmc" ;Y a'4tiii� °+C� <br /> K :"fa NL I �: <br /> r <br /> •� , 3 '2'm a a� f' _` c ±tz� �4 a <br /> Laboratory Control Spike `�' �� � VYater : �� s- QC'Batch#2005108104-2B 65v <br /> a to a ! EI <br /> ��LCS, ;� �20,051�a8104 2B 65�039����,�;���`�EXtracted 0,810a1�005� � 5�' �_ Analyzed 08104!2005,18'39 <br /> Compound Conc ug/L Exp Conc Recovery% RPDJ Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % I Rec I RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 280 25 1120 65-165 20 <br /> Benzene 287 25 1148 69-129 20 <br /> Toluene 298 25 1192 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 428 500 856 73-130 <br /> Toluene-d8 462 500 1924 81-114 <br /> i <br /> . Severn Trent Laboratories, Inc 08/29/2005 14 36 <br /> STL San Francisco•1220 Quant'Lane,Pleasanton,CA 94566 <br /> Aped Swam Tr-t Ptc Tel 925 484 1919 Fax 925 484 1096"www stl-inc corn`CA DHS ELAP#2496 Page 6 of 7 <br />