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iu <br /> Submission: 2004-10-0539 <br /> Fuel Oxygenates by 8260B <br /> ACC Environmental Consultants <br /> Attn.: Ed Giacometti <br /> 7977 Capwell Drive, Suite 100 <br /> Oakland, CA 94621 <br /> Phone: (510)638-8400 Fax: (510)638-8404 <br /> Project: 6674-004.00 Received: 10/18/2004 13:40 <br /> 6970 West Lane <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 82608 <br /> Laboratory Control Spike Soil QC Batch#2004110/20-02.69 <br /> LCS 2004/10/20-02.69-039 Extracted: 10/20/2004 Analyzed: 10/20/200417:39 <br /> LCSD 2004/10/20-02.69-057 Extracted: 10/20/2004 Analyzed: 10/20/200417:57 <br /> Compound Conc. ug/Kg Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 54.1 48.7 50.0 108.2 97.4 10.5 65-165 20 <br /> Benzene 48.1 48.9 50.0 96.2 97.8 1.6 69-129 20 <br /> Toluene 51.0 49.0 50.0 102.0 98.0 4.0 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 469 448 500 93.8 89.6 72-124 <br /> Toluene-d8 487 484 500 97.4 96.8 75-116 <br /> Sevem Trent Laboratories, Inc. 10/25/200415:00 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> Apart of ,Trent Pic Tel 925 484 1919 Fax 925 484 1096*www.sti-inc.com*CA DHS ELAP#2496 Page 7 of 9 <br />