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® STL Submission : 2005-04-0622 <br /> Gas/BTEXFuel Oxygenates by 8260B (High Level) <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 /> Batch QC Report <br /> Prep(s): 5030B Test(s): 8260B <br /> Method Blank Soil QC Batch # 2005/05/01 -03.69 <br /> MB: 2005/05/01 -03.69-013 Date Extracted: 05/02/2005 01 : 13 <br /> Compound Conc. RL Unit Analyzed Flag <br /> Gasoline ND 50000 ug/Kg 05/02/2005 01 : 13 <br /> Benzene ND 500 ug/Kg 05/02/2005 01 : 13 <br /> Toluene ND 500 ug/Kg 05/02/2005 01 : 13 <br /> Ethyl benzene ND 500 ug/Kg 05/02/2005 01 : 13 <br /> Total xylenes ND 500 ug/Kg 05/02/2005 01 : 13 <br /> Surrogates(s) <br /> 1 ,2-Dichloroethane-d4 125.6 53-129 % 05/02/2005 01 : 13 <br /> Toluene-d8 117.2 47-136 % 05/02/2005 01 : 13 <br /> I <br /> Severn Trent Laboratories, Inc. 05/03/200515:40 <br /> STL San Francisco ` 1220 Quarry Lane, Pleasanton, CA 94566 <br /> pan of Severn Trent Pm Tel 925 484 1919 Fax 925 484 1096 ` w .stl-inacom ' CA DHS ELAP# 2496 Page 3 of 5 <br />