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® STL Submission: 2005-01-0289 <br /> ,mmm <br /> Total Lead <br /> TRC Alton Geoscience- Irvine <br /> Attn.: Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone: (949) 341-7440 Fax: (949) 753-0111 <br /> Project: 41050001 FA20 Received: 01/11/2005 17:17 <br /> Conoco Phillips# 01205 <br /> Site: 16470 Cambridge St. Lathrop <br /> Batch QC Report <br /> Prep(s): 3010A Test(s): 6010B <br /> Laboratory Control Spike Water QC Batch#2005101112-04.15 <br /> LCS 2005101112-04.15-038 Extracted: 01/12/2005 Analyzed: 01114/200517:27 <br /> LCSD 2005101112-04.15-039 Extracted: 01/12/2005 Analyzed: 01/14/200517.32 <br /> Compound Conc. mg/L Exp.Conc. Recovery % RPD Ctrl.Limits% Flags - <br /> LCS LCSD LC5 LCSD % Re c. RPD LC5 LCSD <br /> Lead 0.490 0.496 0.500 98.0 99.2 1.2 80-1201 20 <br /> Severn Trent Laboratories, Inc. 01/19/2005 09:27 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A Part of Severn Trent Pk Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.corn"CA DHS ELAP#2496 Page 19 of 19 <br />