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STL Submission: 2005-04-0230 <br /> Gas/BTEX Fuel Oxygenates by 8260B (C6-C12) <br /> Cambria Environmental Emeryville <br /> Attn.:Aubrey Cool <br /> 5900 Hollis Street, Ste. A <br /> Emeryville, CA 94608 <br /> Phone: (510)420-3336 Fax: (510)420-9170 <br /> Project: 207-0953-001 Received: 04/07/2005 15:17 <br /> SAP 136146 <br /> Site: 7700 Moreland Street, Stockton, CA <br /> Batch QC Report <br /> Prep(s): 5030B Test(s):8260B <br /> Matrix Spike ( MS/MSD) Soil QC Batch#2005/04/21-3A.66 <br /> MS/MSD Lab ID: 2005-04-0407-001 <br /> MS: 2005/04/21-3A.66-047 Extracted:04/21/2005 Analyzed: 04/21/2005 21:47 <br /> Dilution: 1.00 <br /> MSD: 2005/04/21-3A.66-013 Extracted:04/21/2005 Analyzed: 04/21/2005 22:13 <br /> Dilution: 1.00 <br /> Compound Conc. mg/Kg Spk.Level Recovery% Limits% Fla s <br /> MS MSD Sample mg/Kg mg/KgMS MSD RPD Rec. RPD MS MSD <br /> Methyl tert-butyl ether 0.0591 0.0532 ND 0.049019 120.6 115.8 4.1 65-165 20 <br /> Benzene 0.0549 0.0477 ND 0.049019 112.0 103.8 7.6 69-129 20 <br /> Toluene 0.0575 0.0524 ND 0.049019 117.3 114.0 2.9 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 507 509 500 101.5 101.8 76-124 <br /> Toluene-d8 537 535 500 107.3 107.0 75-116 <br /> Severn Trent Laboratories, Inc. 04/22/200512:26 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Severn Trent Pic Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com.CA DHS ELAP#2496 Page 9 of 9 <br />