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r <br />' STL Submission 2005-04-0574 <br /> PCBs <br /> rURS-San Francisco, CA <br /> Attn Erik Skov <br />' 221 Main Street#600 <br /> San Francisco, CA 94105 <br />' Phone (415) 896-5858 Fax (415)882-9261 <br /> Project 28066866 03000 Received 04/19/2005 17 50 <br /> UniFirst Facility-Stockton <br /> r <br /> Batch QC Report <br /> r Prep(s) 3550/8082 Test(s) 8082 <br /> i <br /> Matrix Spike ( MS 1 MSD ) Soil QC Batch #2005/04122-01 14 <br /> rMS/MSD Lab ID 2005-04-0507- 006 <br /> MS 2005104/22-01 14-004 Extracted 04/22/2005 Analyzed 04/24/2005 17 32 <br /> rDilution 1 00 <br /> MSD 2005104122-01 14-005 Extracted 04/22/2005 Analyzed 04124/2005 17 51 + <br /> Dilution 1 00 <br /> ri Compound Conc ug/K Spk Leve Recove % Limits% Fla s <br /> MS MSD Sample u /Kuq/Kq MS MSD RPD Rec RPD MS MSD <br /> r Aroclor 1016 496 51 1 ND 667 744 773 38 65-135 30 <br /> Arocior 1260 561 542 ND 667 841 820 25 65-135 30 <br /> Surrogate(s) <br /> 2 4 5 6-Tetrachloro-m-xylen 341 330 50 682 659 50-125 0 <br />' Decachlorobiphenyl 389 399 50 778 798 46-142 0 <br /> r <br /> r <br /> r <br /> r <br /> r <br /> Severn Trent Laboratories, Inc 04/2612005 18 26 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A PM of Severn Trent Pk Tel 925 484 1919 Fax 925 484 1096"www stknc com`CA DHS FLAP#2496 Page 10 of 10 <br /> r <br />