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man STL Submission 2005-04-0631 <br /> Semi-volatile analysis by GC/MS - EPA8270C <br /> IURS-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 04/20/2005 16 42 <br /> Unifirst Facility-Stockton <br /> Batch QC Report <br /> Prep(s) 3550818270C Test(s) 8270C <br /> Matrix Spike ( MS I MSD ) Soil QC Batch#2005104129-03 11 <br /> MW-1-30 » MS Lab ID 2005-04-0631 -006 <br /> MS 2005104129-03 11-007 Extracted 04/29/2005 Analyzed 04/30/2005 14 23 <br /> Dilution 1 00 <br /> MSD 2005104129-03 11-008 Extracted 04/29/2005 Analyzed 04/30/2005 14 50 <br /> Dilution 1 00 <br />' Compound Conc mg/Kg Spk Level Recovery% Limits% Flags <br /> MS MSD Sample mg/Kg mg/KgMS MSD RPD Rec RPD MS MSD <br /> Phenol 115 0 980 ND 1 67 689 587 160 20-90 35 <br /> 2-Chlorophenol 108 0 890 ND 1 67 647 533 193 27-123 35 <br /> 1 4-Dichlorobenzene 0 980 0 860 ND 1 67 587 51 5 131 28-104 30 <br /> N-Nitroso-di-n-propylamine 1 16 109 ND 1 67 695 653 62 25-114 39 <br /> 1 2 4-Trichlorobenzene 1 14 0 910 ND 167 683 545 225 38-107 35 <br /> 4-Chloro-3-methyiphenol 1 40 1 35 ND 1 67 838 808 36 26-103 33 <br /> Acenaphthene 116 1 20 ND 1 67 695 719 34 49-102 30 <br /> 4-Nitrophenol 200 1 50 ND 1 67 1198 898 286 17-109 35 M4 <br />' 2 4-Dmitrotoluene 128 1 35 ND 1 67 766 808 53 39-939 38 <br /> Pentachlorophenol 1 30 1 33 ND 1 67 778 796 23 11-114 35 <br /> Pyrene 1 23 1 27 ND 1 67 737 760 31 25-117 35 <br /> Surrogate(s) <br /> Nitrobenzene-d5 185 166 25 738 662 23-120 <br /> 2-Fluorobiphenyl 159 153 25 637 61 2 30-115 <br /> p-Terphenyl-d14 165 168 25 659 672 18-137 <br /> 2-Fluorophenol 307 253 50 614 506 25-121 <br />' Phenol-d5 318 274 50 636 548 24-113 <br /> 2 4 6-Tribromophenol .396 396 50 1792 792 19-122 <br /> . Severn Trent Laboratories, Inc 05/02/2005 15 45 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A pan p,Severn Trent Pc Tel 925 484 1919 Fax 925 484 1096`www stl-inc com'CA DHS ELAP#2496 Page 12 of 13 <br />