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1 <br /> 5 <br /> t <br /> STLT Submission 2005-05-0333 <br /> ' . . y 1 <br /> Volatile Organic Compounds by 82608 (Low Level) <br /> URS-San Francisco, CA <br /> Attn Erik Skov <br /> 221 Main Street 4600, <br /> San Francisco, CA 94105 <br /> Phone (415) 896-5858 Fax (415) 882-9261 r <br /> Protect 38066866 04000 Received 05/11/2005 16 41 ' <br /> Goodwin Procter Unifirst a { <br /> l <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 82606 1 <br /> Matrix Spike ( MS 1 MSD ) Water - QC Batch#2005105/18-01 60 <br /> MS/MSD' 1 <br /> Lab ID 2005-05-0345-004 1 <br /> MS 2005/05118-01 60-048 Extracted 05/18/2005 Analyzed 051181200511 48 <br /> - Dilution 2000 <br /> MSD 2005105118-01 60-022 Extracted 05/18/2005 Analyzed 05/18/2005 12 22 <br /> Dilution 2000 <br /> Compound - Cone u /L k Leve Recovery <br /> % Limits% Flags <br /> 1 <br /> MS MSD Sample u 1L MS MSD RPD Rec RPD MS MSD <br /> Benzene 509 502 170 400 848 830 21 69-129 20 ' <br /> Chlorobenzene 374 378 NO 400 93 5 94 5 1 1 61-121 20 <br /> 1 1-Dichloroethene _ 358 _ 360 NO --4-00— 89 5 90 0 0 6 65-125 20 <br /> Toluene - _ 353 357 504 1 400 870 880 1 1 70-130 20 <br /> Trichloroethene, 342 344 NO 400 855 860 06 74-134 20 ' <br /> Surrogate(s) <br /> 4-Bromofluorobenzene 472 466 500 944 932 79-118 <br /> 1 2-Dichloroethane-d4 439 421 500 878 842 78-117 1 <br /> Toluene-d8 432 435 500 864, 870 77-121 <br /> , <br /> 1 1 <br /> 5 <br /> , 1 <br /> Severn Trent Laboratories, Inc 05/19/2005 15 26 <br /> STL San Francisco' 1220 Quarry Lane Pleasanton CA 94566 <br /> A can of sava,n Trent Piz Tel 925 484 1919 Fax 925 484 1096•www stl-inc com'CA DHS FLAP#2496 Page 18 of 19 <br />