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©� STL Submission 2005-12-0114 <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 /> Protect 247-1359-006 Received 12/15/2005 15 30 <br /> 98996183 <br /> Site 4315 Waterloo Road, Stockton <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 8260E <br /> Laboratory Control Spike Soil QC Batch #2005/12/23-1 A 69 <br /> LCS 2005112123-1A 69-024 Extracted 12/23/2005 Analyzed 12/23/2005 10 24 <br /> LCSD 2005112123-1A 69-044 Extracted 12/23/2005 Analyzed 12/23/2005 10 44 <br /> Compound Conc mg/Kg Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> . Methyl tert-butyl ether(MTBE) 00427 00443 005 854 886 37 65-165 20 <br /> Benzene 00502 00461 005 1004 92 2 8 5 69-129 20 <br /> Toluene 00510 00502 005 1020 1004 1 6 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 546 548 500 1092 1096 72-124 <br /> Toluene-d8 538 518 500 11076 11036 72-116 <br /> Severn Trent Laboratories, Inc 12129120051608 <br /> STL San Francisco'1220 Quarry Lane Pleasanton,CA 94566 <br /> A part of Severn Trent Pm Tel 925 484 1919 Fax 925 484 1096'www stE-inc com"CA DHS FLAP#2496 Page 32 of 38 <br />