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t� r Submission 2005-02-0795 <br /> STL <br /> Gas/BTEX Compounds by 8015M18021 <br /> TRC Alton Geoscience- Irvine <br /> Attn Anlu Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949)753-0111 <br /> Project 410500011FA20 Received 02124/20051510 <br /> Conoco Phillips#5886 <br /> Site 2701 W March Ln , Stockton <br /> Batch QC Report <br /> Prep(s) 5030 Test(s) 8015M <br /> Laboratory Control Spike Water QC Batch #2005103103-01 05 <br /> LCS 2005103103-01 05-005 Extracted 03/03/2005 Analyzed 03/03/2005 08 59 <br /> LCSD <br /> Compound Conc ug/L Exp Conc Recovery% RPD1 Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % I Rec RPD LCS LCSD <br /> . GRC(C6-C12) 247 250 988 75-125 20 <br /> Surrogates(s) <br /> 4-BromoFluorobenzene-FID 474 500 948 50-150 <br /> Severn Trent Laboratories, Inc 03/07/2005 17 12 <br /> STL San Francisco`1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of S—M Trent Plc Tef 925 484 1919 Fax 925 484 1096"www stl-inc corn"CA OHS ELAP#2496 Page 24 of 28 <br />