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r <br />' STL Submission 2005-04-0574 <br /> Volatile Organic Compounds by 82608 (Low Level) <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 /> 1 <br /> Batch QC Report <br />' Prep(s) 5035 Test(s) 8260B <br /> Matrix Splke( MS 1 MSD Soil QC Batch #2005104/23-01 70 <br />' MW-4-10 » MS Lab ID 2005-04-0574-002 <br /> MS 2005104123-01 70-048 Extracted 04/23/2005 Analyzed 04/23/2005 15 48 <br />' Dilution 1 00 <br /> MSD 2005104123-01 70-021 Extracted 04/23/2005 Analyzed 04/23/2005 16 21 <br /> Dilution 1 00 <br />'• Compound Cone ug/Kg k Level Recovery% Limits% Flags <br /> MS MSD Sample ug/Kg MS MSD RPD Ree RPD MS MSO <br />' Benzene 980 92 0 ND 998 982 946 37 69-129 20 <br /> Chl❑r❑benzene 104 102 ND 998 1042 104 8 0 6 61-121 20 <br /> 1 1-Dichloroethene 968 876 ND 998 970 90 0 75 65-125 20 <br /> Toluene 982 977 ND 998 984 1004 2 0 70-130 20 <br />' Trichloroethene 94 4 93 7 ND 998 94 6 96 3 1 8 74-134 20 <br /> Surrogate(s) <br /> 4-Bromofluorobenzene 503 512 500 1005 1024 60-130 <br /> 1 2-Dichloroethane-d4 465 461 500 931 922 60-140 <br /> rToluene-d8 1470 1484 1 1 500 1939 1968 1 170-130 <br /> 1 <br /> 1 <br /> r <br /> r <br /> Severn Trent Laboratories, Inc 04126120051547 <br />' STL San Francisco"1220 Quarry Lane Pleasanton CA 94566 <br /> Apart nl S",.Tipnj Pk Tel 925 484 1919 Fax 925 484 1096'www stl-mc com'CA DHS FLAP#2496 Page 28 of 30 <br /> 1 <br />