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STLSubmission 2005-04-0633 <br /> . Semi-volatile analysts by GC/MS - EPA8270C <br /> Treadwell & Rollo-San Francisco <br /> Attn David Dixon <br /> 555 Montgomery Street Suite 1300 <br /> San Francisco, CA 94111-2554 <br /> Phone (415)955-9040 Fax (415)955-9041 <br /> ' Project 2597 10 Received 04/20/2005 14 00 <br /> Carando <br /> Batch QC Re ort <br /> Prep(s) 3510C18270C Test(s) 8270C <br /> Laboratory Control Spike Water QC Batch#2005104121-01 11 <br /> LCS 2005104121-0111-002 Extracted 04/21/2005 Analyzed 04123/20051647 <br /> LCSD 2005104121-01 11-003 Extracted 04/21/2005 Analyzed 04123120051714 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Phenol 165 163 50 330 326 12 12-89 35 <br /> 2-Chlorophenol 33 2 347 50 664 694 4 4 23-134 25 <br /> 1,4-Dichlorobenzene 275 295 50 550 590 7 0 36-97 30 <br /> N-Nitroso-din-propylamine 362 41 0 50 724 820 12 4 10-130 34 <br /> 1,2,4-Tnchlorobenzene 334 330 50 668 660 1 2 44-142 35 <br /> 4-Chloro-3-methylphenol 364 381 50 728 762 4 6 22-147 31 <br /> Acenaphthene 307 357 50 614 71 4 15 1 56-118 36 <br /> 4-Nitrophenol 270 291 50 54 0 58 2 7 5 1-132 35 <br /> 2,4-Dinitrotoluene 376 431 50 752 86 2 13 6 39-139 35 <br /> Pentachlorophenol 436 433 50 872 866 0 7 45-125 35 <br /> Pyrene 41 1 427 50 822 854 3 8 52-115 35 <br /> Surrogates(s) <br /> Nitrobenzene-d5 180 194 25 721 776 35-114 <br /> 2-Fluorobiphenyl 167 168 25 666 670 43-116 <br /> p-Terphenyl-d14 220 229 25 880 91 5 33-141 <br /> 2-Fluorophenol 24 1 26 0 50 48 2 521 25-100 <br /> Phenol-d5 157 178 50 31 3 356 10-110 <br /> 2,4 6-Tnbromophenol 401 1388 50 801 1776 10-123 <br /> 1 <br /> Severn Trent Laboratories, Inc 04124/2005 13 33 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A part a Sevem Trent Plc Tel 925 484 1919 Fax 925 484 1096'www stl-inc cam'CA DHS FLAP#2496 Page 8 of 8 <br />