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® Submission 2005-11-0186 <br /> x L <br /> Gas/BTEX Fuel Oxygenates by 8260B (C6-C12) <br /> Cambria Env:ronmental Emeryville <br /> Attn Cynthia Vasko <br /> 5900 Hollis Street, Ste A <br /> Emeryville, CA 94608 <br /> Phone (510) 420-3344 Fax (510) 420-9170 <br /> Project 247-0783-003 Received 11/14/2005 15 15 <br /> 98996184 <br /> Site 2575 Country Club Boulevard, Stockton <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 82608 <br /> Laboratory Control Spike Water QC Batch#2005111122-1A 64 <br /> LCS 2005/11/22-1 A 64-048 Extracted 11/22/2005 Analyzed 11/22/2005 06 48 <br /> LCSD 2005111122-1A 64-009 Extracted 11/22/2005 Analyzed 11/22/20050709 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 225 237 25 900 948 52 65-165 20 <br /> Benzene 224 228 25 896 912 18 69-129 20 <br /> Toluene 24 6 242 25 984 1968 1 6 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 480 491 500 960 982 73-130 <br /> Toluene-d8 533 537 500 1066 1074 81-114 <br /> Severn Trent Laboratories, Inc 11/2212005 10 28 <br /> STL San Francisca" 1220 Quarry Lane, Pleasanton, CA 94566 <br /> A part of Severn hoot Plc Tel 925 484 1919 Fax 925 484 1096`www sti-Enc corn`CA DHS ELAN 2496 Page 12 of 16 <br />