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1 <br /> STLSubmission 2005-04-0631 <br />' Volatile Organic Compounds by 82608 (Law Lever <br /> URS-San Francisco, CA <br /> Attn Erik Skov <br />' 221 Main Street#600 <br /> San Francisco, CA 94105 <br />' Phone (415) 896-5858 Fax (415) 882-9261 <br /> Project 28066866 03000 Received 04/20/2005 16 42 <br /> Unifirst Facility-Stockton <br /> Batch QC Report <br />' Prep(s) 5035 Test(s) 8260B <br /> Laboratory Control Spike Soil QC Batch#2005104124-01 70 <br />' LCS 2005104124-01 70-013 Extracted 04/24/2005 Analyzed 04/24/2005 09 13 <br /> LCSD <br />' Compound Conc ug/Kg Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD1 LCS LCSD <br /> Benzene 112 1000 1120 69-129 20 <br /> Chlorobenzene 110 1000 1100 61-121 20 <br />' 1,1-Dichloroethene 99 3 1000 993 65-125 20 <br /> Toluene 111 1000 1110 70-130 20 <br /> Trichloroethene 192 1000 1120 74-134 20 <br />' <br /> Surrogates(s) <br /> 4-Bromofluorobenzene 530 500 1060 60-130 <br /> 1,2-Dichloroethane-d4 499 500 998 60-140 <br /> Toluene-d8 518 500 11036 70-130 <br /> 1 <br /> Severn Trent Laboratories, Inc 04/2612005 15 49 <br />' STL San Francisco*1220 Quarry Lane Pleasanton CA 94566 <br /> A pal of SO—T«n,Plc Tel 925 484 1919 Fax 925 484 1096*www stl-ino corn*CA DHS FLAP#2496 Page 11 of 12 <br />