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0ST L Submission 2005-04-0574 <br /> I nY � t <br /> Volatile Organic,Compounds by 82608 (Low Leel) <br /> — -- - URS-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 /> Batch QC Report <br /> Prep(s) 5035 Test(s) 8260B <br /> Matrix Spike ( MS 1 MSD } Soil QC Batch#2005104124-01 70 <br /> r r <br /> MS/MSD Lab ID 2005-04-0575- 009 ' <br /> MS 2005104124-01 70-007 Extracted 04/24/2005 Analyzed 04/24/2005 11 07 <br /> Dilution 100 <br /> MSD 2005104124-01 70-040 Extracted 04/24/2005 Analyzed 041241200511 40 <br /> Dilution 1 00 <br /> - - Compound Conc. u Spk Leve Recovery% Limits% Fla s <br /> MS MSD Sample ugtKg MS MSD RPD Rec RPD MS MSD <br /> Benzene 91 3 898 ND 899 1016 997 19 69-129 20 <br /> Chlorobenzene 980 953 ND 899 1090 1058 30 61-121 20 ' <br /> 1 1-Dichloroethene 887 901 ND 899 987 1000 1 3 65-125 20 <br /> Toluene _ _ _ _ 908,_ _ 910— - ND - _ 899 _ 1010 1010 00 _ 70-130 20 <br /> - Trichloroethene r 933 887 ND 899 1038 984 53 74-134 20 <br /> Surrogate(s) - <br /> 4-Bromofluorobenzene 487 488 500 974 976 60-130 <br /> 1 2-Dichloroethane-d4 481 490 500 961 980 50-140 <br /> Toluene-d8 1513___i 480 1 1 500 1102 5 196 0 70-130 <br /> , <br /> Severn Trent Laboratories, Inc 04126/20051540 <br /> STL San Francisco' 1220 Quarry Lane Pleasanton CA 94566 <br /> A part of Severn Trent Pic Tel 925 484 1919 Fax 925 484 1096'www stl inc corn a CA DHS ELAN 2496 Page 29 of 30 <br />