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r <br /> y STL <br /> Submission 2005-04-0631 <br /> CAM 17 Metals <br /> --URS-San Francisco,-CA - - -- -- - --- - — - - 1 <br /> Attn Erik Skov <br /> 221 Main Street#600 C <br /> San Francisco CA 94105 <br /> Phone (415) 896-5858 Fax {415} 882-9261 <br /> Project 28066866 03000 Received 04/20/2005 16 42 , i <br /> Unifirst Facility-Stockton <br /> Batch QC Report <br /> Prep(s) 3050B Test(s) 6010B ' <br /> Laboratory Control Spike Sod QC Batch#2005104126-03 15 <br /> LCS 2005104126-03 15-030 Extracted 04/26/2005 Analyzed 04/27/2005 10 57 ' <br /> LCSD 2005104126-03,15-031 Extracted 04/26/2005 Analyzed 04/27/2005 11 08 <br /> Compound Conc mg/Kg Exp Conc ' Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD '% Rec RPD LCS LCSD <br /> Antimony 902 935 1000 902 935 36 80-120 20 <br /> Arsenic 102 104 1000 1020 1040 1 9 80-120 20 <br /> Barium 106 108 1000 1060 1080 1 9 80-120 20 <br /> Beryllium 101 103 1000 101 0 1030 20 80-120 20 - <br /> Cadmium 995 101 1000 995 101 0 1 5 80-120 20 <br /> Chromium 101 103 1000 101 0 1030 20 80-120 20 <br /> Cobalt 1 100 102 1000 1000 1020 20 80-120 20 ' <br /> Copper 103 105 1000 1030 1050 1 9 80-120 20 <br /> Lead 997- 102 1000 99 7 _ 1020-- 2 3 t 80-120 20 <br /> Molybdenum 102 104 1000 1020 1040 1 9 80-120 20 <br /> Nickel 101 103 1000 101 0 1030 20 80-120 20 <br /> Selenium 102 105 1000 1020 1050 29 80-120 20 <br /> Silver 101 102 1000 101 0 1020 1 0 80-120 20 <br /> Thallium 102 103 1000 1020 1030 10 80-120 20 <br /> Vanadium 102 104 1000 1020 1040 1 9 80-120 20 <br /> Zinc 100 102 1000 1000 102 D 2 D 80-120 20 <br /> 1 <br /> x <br /> Severn Trent Laboratories, Inc 04!27120051240 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A part a S-rn Trent Pc Tel 925 484 1919 Fax 925 484 1096 a www stlanc corn'CA DHS FLAP#2496 Page 7 of 7 <br />