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STLSubmission 2005-10-0232 <br /> Gas/BTEX Fuel Oxygenates by 8260B <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 41050001 FA20 Received 10/11/2005 16 20 <br /> Conoco Phillips#4409 <br /> Site 1502 N El Dorado St Stockton <br /> Batch QC Report ' <br /> 717- A <br /> P7-reps):54306 �`�: u; s �� - ��>` -Tests) 8260E <br /> re <br /> Laboratory Control Spike .' '�a _ �� ��� Water " ;;s QC Batch#200514114-2A.711, <br /> - - -E� ° <br /> LCS '� ` _20 0 511 011 4-2A 71=©13 -Z--,4,'i, Extracted E1011412005,w Analyzed 10/1412005 19 13� <br /> 2....... M.;,:M s u ..Mm.M»,«.,,x ° 'si. ` v. «. �.:.'.d.«._c. ...i M ,�9-a,.. u.3x w'`"^u v •,.•• 'i <br /> Compound Conc ug/L Exp Conc Recovery% RPDJ Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 26 2 25 1048 65-165 20 <br /> Benzene 27 3 25 1092 69-129 20 <br /> Toluene 27 4 25 1096 70-130 20 <br /> Surrogates(s) <br /> 1,2-D4chloroethane-d4 453 500 906 73-130 <br /> Toluene-d8 1529 1 1500 11058 81-114 <br /> 1 1 <br /> Severn Trent Laboratories, Inc 10/20/2005 <br /> STL San Francisco-1220 Quarry Lane Pleasanton CA 94566 <br /> A part of Swam hon[Plc Tel 925 484 1919 Fax 925 484 1096'www stl-mc com'CA DHS ELAP#2496 Page 17 of 21 <br />