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y� U <br /> � © STL Subrnisslon# 2004-04-0904 <br /> • Total Lead <br /> TRC Alton Geoscience <br /> Attn Antu Fartan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Project 41050001 FA20 Received 04/28/2004 15 35 <br /> Conoco Phillips#01205 <br /> Site 16470 Cambridge St,Lathrop <br /> Batch QC Report <br /> Prep(s) 3010A Test(s) 6010B <br /> Matrix Spike ( MS 1 MSD ] Water QC Batch#2004104129-05 15 <br /> MW-1 >> MS Lab ID 2004-04-0904-001 <br /> MS 2004104129-05 15-016 Extracted 04/29/2004 Analyzed 05/03/2004 08 10 <br /> Dilution 1 00 <br /> MSD 2004104129-05 15-017 Extracted 04/2912004 Analyzed 05/03/2004 08 15 <br /> Dilution 1 00 <br /> Compound Conc m /L S k Levell Recovery% I Limits% I .-Flags <br /> MS MSD Sample I m IL I MS I MSD I RPD I Rec I RPD I MS MSD <br /> Lead 0 473 0 475 1 ND 1 0 500 1946 19,50 0 4 75-125 1 20 <br /> • Severn Trent Laboratories, Inc <br /> 05/10/2004 14 23 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A pan of Severn Trent Pb Tel 925 484 1919 Fax 925 484 1096`www stl-mc con9"CA DIMS ELAP#2496 Page 20 of 20 <br />