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STLSubmission: 2005-06-0793 <br /> Fuel Oxygenates by 8260B <br /> San Joaquin Company, Inc. <br /> Attn.: Dai Watkins <br /> 1120 Hollywood Ave, Suite 3 <br /> Oakland, CA 94602-1459 <br /> Phone: (510)336-1772 Fax: (510)336-9119 <br /> Project: 9902.013 Received: 06/30/2005 09:25 <br /> C. Navarra <br /> Site: 7500 W. 11th St., Tracy. <br /> Batch QC Report . <br /> PreR(s): 50308.:, Test(Q-823013 <br /> Matrix Spike(MS 1 MSD:):::' Water QC Batch 2D05107107 o1 64 <br /> MS/MSDLab 1D; :2005706-(}673 <br /> MS: 2005/07101-0.1.69-008 Extracted,'07/01/2005 Analyzed: D710 12005 17.08, <br /> ... ., <br /> bfiution: 1:.00 i. <br /> MSD: 2005107/01-01.64-032 :1.: Extracted.'07/01/2005 Analyzed 07/0112005 1.7;32":: <br /> Dilutlon: 1.00 <br /> Compound Conc. ug/L Spk.Level Recovery% Limits% Flags <br /> Ms MSD Sample ug/L MS MSD RPD Rec. RPD MS MSD <br /> F=' Methyl tert-butyl ether 31.0 33.9 9.95 25.0 84,2 95,8 12,9 65-165 20 <br /> Benzene 22.9 25.7 ND 25.0 91.6 102.8 11.5 69-129 20 <br /> Toluene 24.1 26.6 ND 25.0 96.4 106.4 9.9 70-130 20 <br /> Surrogate(s) <br /> _ 1,2-Dichloroethane-d4 437 420 500 87.4 83.9 73-130 <br /> Toluene-d8 433 419 500 86,6 83,7 81-114 <br /> `r <br /> Severn Trent Laboratories, Inc. 07/15/2005 11:44 <br /> STL San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> -- Apad&S.—T.nlPlc Tel 925 484 1919 Fax 925 484 1096"www.sti-inc.com"CA DHS ELAP#2496 Page 30 of 36 <br />