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STLSubmission 2005-04-0574 <br /> Volatile Organic Compounds by 8260B (Low Level) <br />' URS-San Francisco, CA <br /> Attn Erik Skov <br /> i221 Main Street#600 <br /> San Francisco, CA 94105 <br /> Phone (415) 896-5858 Fax (415) 882-9261 <br /> Project 28066866 03000 Received 04/19/2005 17 50 <br /> Unfirst Facility-Stockton <br /> Batch QC Report <br />' Prep(s) 5035 I' Test(s) 8260E <br /> Laboratory Control Spike Soil QC Batch#2005104123-01 70 <br /> LCS 2005104123-01 70-046 Extracted 04/23/2005 Analyzed 04/23/2005 12 46 <br /> LCSD <br /> L Compound Conc ug/Kg Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 96 6 1000 966 69-129 20 <br />' Chlorobenzene 111 1000 1110 61-121 20 <br /> 1,1-Dichlorcethene 94 6 1000 946 65-125 20 <br /> Toluene 978 1000 978 70-130 20 <br /> Trichloroethene 94 7 1000 947 74-134 20 <br />' Surrogates(s) <br /> 4-Bromofluorobenzene 517 500 1034 60-130 <br /> 1 2-Dichloroethane-d4 492 500 984 60-140 <br /> Toluene-d8 478 1 500 95 6 1 1 1 70-130 <br /> 1 <br /> t <br /> • Severn Trent Laboratories, Inc 04/26/2005 15 47 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A pan of S",a hens Pr Tel 925 484 1919 Fax 925 484 1096'www stl-inc corn"CA DHS EL.AP#2496 Page 25 of 30 <br /> 1 <br />