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i <br /> o Submission: 2005-06-0707 <br /> STL <br /> GaslBTEX Compounds by 8015MI8021 <br /> ATC Associates Inc. . <br /> Attn.:Janine Weber <br /> 6602 Owens Drive Suite 100 <br /> Pleasanton, CA 94588 <br /> Phone: (925)460-5300 Fax: (925)463-2559 <br /> Project: 75.62503.3206 Received: 08/2412005 16:46 <br /> Qulk Stop 132 <br /> Site: 3555 W. Hammer Lane, Pleasanton,CA <br /> Batch QC Report <br /> Prep(s}',5030Test(s) 80216 <br /> Laboratory Control Spike Water <br /> 'QC Batch#2005/08/2641.05 a <br /> LCS <2005/08/2641-05-0o4 Extracted 08126/2005 Analyzed:°08128120051016 <br /> x <br /> Compound Conc. ug/L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Benzene 49.6 50 99.2 77-123 20 <br /> Toluene 49.2 50 98.4 78-122 20 <br /> Ethyl benzene 48.3 50 96.6 70-130 20 <br /> Xylene(s) 146 150 97.3 75-125 20 <br /> ' Surrogates(s) <br /> Trifluorotoluene 541 500 108.2 58-124 <br /> 1 <br /> 1 i <br /> . <br /> Severn Trent Laboratories, Inc. 09/06/2005 14:00 <br /> ' STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> Apar of SO—Tian[P! Tel 925 484 1919 Fax 925 484 1096•www.st-inc.com"CA DHS ELAP#2496 Page 4 of 8 <br /> 1 <br />