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G <br /> mmw S <br /> TT Submission# 2004-03-0072 - <br /> Gas/BTEX/MTBE by 8260B <br /> SECOR-Sacramento <br /> Attn Amy Draffan <br /> 3017 Kilgore Road, Suite 100 <br /> Rancho Cordova, CA 95670 <br /> Phone (916) 861-0400 Fax (916) 861-0430 - y <br /> Project Conoco Philips Site# 5886 Received 03/02/2004 17 40 <br /> Site 2701 West March Lane, Stockton, CA <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch#2004/03/10-1 C 62 <br /> LCS 2004/03/10-1 C 62-016 Extracted 03/10/2004 Analyzed 03/10/2004 10 16 <br /> LCSD 2004/03/10-1 C 62-038 Extracted 03/10/2004 Analyzed 03/10/2004 10 38 <br /> Compound Conc. ug/L Exp Conc Recovery % JRPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec I RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 31 1 29 9 25 1244 1196 3 9 65-165 20 <br /> Benzene- _ -- 241 - 256-- - 25 -- - 964 - -1024- 6 0 :69-129 _20t <br /> Toluene 260 273 25 1040 1092 49 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 523 513 500 1 1046 1026 76-114 <br /> Toluene-d8 494 485 500 988 1970 1 1 88-1101 1 <br /> Severn Trent Laboratories, Inc <br /> 03/15/2004 13 8 <br /> STL San Francisco" 1220 Quarry Lane,Pleasanton CA 94566 <br /> A part of Severn Trenf Plc Tel 925 484 1919 Fax 925 484 1096'www stl-mc corn"CA DHS FLAP#2496 Page 8 of 9 <br />