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�'' Submission: 2004-08-0191 <br /> t Is <br /> Fuel Oxygenates by 82608 <br /> Clayton Group Services, Inc. <br /> Attn.: Mike Zimmerman <br /> 6920 Koll Center Parkway, Suite 216 <br /> Pleasanton, CA 94566 <br /> Phone: (925)426-2600 Fax: (925)426-0106 <br /> Project: 70-05319.00 Received: 08/06/2004 15:48 <br /> San Joaquin General Hospital <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 82608 <br /> Laboratory Control Spike Soil QC Batch#2004/08/11-01.69 <br /> LCS 2004/08/11-01.69-058 Extracted: 08/11/2004 Analyzed: 08/11/2004 06:57 <br /> LCSD 2004/08/11-01.69-057 Extracted: 08/11/2004 Analyzed: 08/11/2004 07:57 <br /> Compound Conc. ug/Kg Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS I LCSD <br /> Methyl tert-butyl ether(MTBE) 39.7 36.9 50.0 79.4 73.8 7.3 65-165 20 <br /> Benzene 52.2 53.8 50.0 104.4 107.6 3.0 69-129 20 <br /> Toluene 51.0 51.3 50.0 102.0 102.6 0.6 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 445 444 500 89.0 88.8 72-124 0 <br /> Toluene-d8 529 551 500 105.8 110.2 75-116 0 <br /> Severn Trent Laboratories, Inc. 08/12/200411:02 <br /> STL San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> A perl d Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096.www.stl-inc.com"CA DHS ELAP#2496 Page 10 of 11 <br />