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fq o <br /> 819 Stoker Avenue,Suite 8 <br /> IDequoia Sacramento CA 95834 <br /> (916)921-9600 <br /> Analytical <br /> www (916)921-0100 <br /> sequolalabs corn <br /> • <br /> IT Corporation-Sacramento Project Tosco 4409, Stockton,CA <br /> 1326 N Market Blvd Project Number NIA Reported <br /> Sacramento CA,95834 Project Manager Kathleen Waldo 09/21/01 15 18 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT- Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %RFC RPD <br /> Analyte Result Limit Units Levet Result %REC Limas RPD Limit Notes <br /> Batch 1090111 -EPA 5030B McOH <br /> Blank(1090111-BLKI) Prepared&Analyzed 09/11/01 <br /> Purgeable Hydrocarbons ND 5 0 mg/kg <br /> Benzene ND 0 025 <br /> Toluene ND 0 025 <br /> Ethylbenzene ND 0 025 " <br /> Xylenes(total) ND 0 025 " <br /> Surrogate a a a-Triuorctoluene 109 100 109 60-140 <br /> L,CS(1090111-BSI) Prepared&Analyzed 09/11/01 <br /> Benzene 1 10 0 025 mglkg 100 110 70-130 <br /> Toluene 1 05 0 025 100 105 70-130 <br /> Ethylbenzene 108 0 025 100 108 70-130 <br /> Ift(total) 312 0 025 3 00 104 70-130 <br /> Su to a aa-Trtfluorotoluene 107 100 107 60-140 <br /> Matrix Spike(1090111-MSI) Source 5109102-07 Prepared&Analyzed 09/11/01 <br /> Benzene 101 0 025 mg/kg 100 ND 101 60-140 <br /> Toluene 0 987 0 025 100 ND 987 60-140 <br /> Ethylbenzene 103 0 025 100 ND 103 60-140 <br /> Xylenes(total) 2 98 0 025 300 ND 993 60-140 <br /> Surrogate a a a-Triuorotoluene 112 100 112 60-140 <br /> Matrix Spike Dup(1090111-MSDI) Source S109102-07 Prepared&Analyzed 09/I1/01 <br /> Benzene 0 961 0 025 mg/kg 100 ND 961 60-140 497 25 <br /> Toluene 0 947 0 025 100 ND 947 60-140 4 14 25 <br /> Ethylbenzene 0 986 0 025 100 ND 986 60-140 437 25 <br /> Xylenes(total) 2 88 0 025 3 00 ND 96 0 60-140 341 25 <br /> Surrogate a,a,a-Trifluorotoluene 102 100 102 60-140 <br /> Sfea Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 6 of 9 <br />