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W , <br /> II S(1"7 TT.i .L.1 Submission : 2005-04-0622 <br /> Fuel Oxygenates by 82608 <br /> Treadwell & Rollo-San Francisco <br /> Attn . : David Dixon <br /> 555 Montgomery Street. Suite 1300 <br /> San Francisco, CA 94111 -2554 <br /> Phone: (415) 955-9040 Fax: (415) 955-9041 <br /> Project: 2597. 11 Received: 04/20/2005 14:00 <br /> 130 N Hunter St. <br /> I <br /> Batch QC Report <br /> Prep(s): 50308 Test(s): 82606 <br /> Matrix Spike ( MS / MSD ) Soil QC Batch # 2005/04/28-03.62 <br /> MS/MSD Lab ID: 2005-04-0612 - 002 <br /> MS: 2005/04/28-03.62-031 Extracted: 04128/2005 Analyzed: 04/28/200520:31 <br /> Dilution: 1 .00 <br /> MSD: 2005/04/28-03.62-057 Extracted: 04/28/2005 Analyzed: 04/28/2005 20:57 <br /> Dilution: 1 .00 <br /> Compound Conc. ug/Kg Spk.Level Recovery % Limits % Flags <br /> MS MSD Sample ug/Kg MS MSD RPD Rec. RPD MS MSD <br /> Benzene 46.9 56.2 ND 46.8 100.2 120.3 18.2 69-129 20 <br /> Toluene 49.9 57.3 ND 46.8 106.6 122.7 14.0 70-130 20 <br /> Surrogates) <br /> 1 ,2-Dichloroethane-d4 532 514 500 106.4 102.8 72-124 <br /> Toluene-d8 532 527 500 105.4 105.4 75-116 <br /> tli : l i7 <br /> 0 <br /> Severn Trent Laboratories, Inc. 05/03/200512:45 <br /> STL San Francisco ' 1220 Quarry Lane, Pleasanton, CA 94566 <br /> P msavem nam Pm Tel 925 484 1919 Fax 9254841096 ` w .stkinc.com " CA DHS ELAP# 2496 Page 5 of <br />