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ker Avene,Suite 8 <br /> Sequoia 819� ,nto,uCA 95834 <br /> (916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical www seyuo1alabs com, <br /> IT Corporation-Sacramento Project Tosco 4409, Stockton,CA <br /> 1326 N Market <br /> Blvd Project Number NIA Reported <br /> Sacramento CA,95834 Protect Manager Kathleen:Waldo 09/19/01 16 52 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT -Quality Control <br /> Sequoia Analytical 9 a yt><cal - Sacramento <br /> Reporting Spike Source "/uREC <br /> RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1090079-EPA 5030B(MeOH) <br /> Blank(1090079-BLK1) Prepared&Analyzed 09/07/01 <br /> Purgeable Hydrocarbons ND 50 mg/kg <br /> Benzene ND 0 025 " <br /> Toluene ND 0 025 " <br /> Ethylbenzene ND 0 025 " <br /> Xylenes(total) 00270 0 025 " AF-B <br /> Surrogate a,a,a-Trtuorotoluene 107 100 107 60-140 <br /> LCS(1090079-BS1) Prepared&Analyzed 09/07/01 <br /> Benzene 0 239 0 025 mg/kg 0200 120 70-130 <br /> Toluene 0 227 0 025 0200 114 70-130 <br /> Ethylbenzene 0 229 0 025 0200 114 70-130 <br /> Xylenes(total) 0 660 0 025 0 600 110 70-130 , <br /> ate <br /> ;aa-Trtfluorototuene 112 100 112 60-140 <br /> Matrix Spike(1090079-MSI) Source S109022-30 Prepared&Analyzed 09/07/01 <br /> Benzene 108 0 025 mg/kg 1 00 ND 108 60-140 <br /> Toluene 101 0 025 100 ND 101 60-140 <br /> Ethylbenzene 1 03 0 025 too ND 103 60-140 <br /> Xylenes(total) 299 0 025 " 300 ND 997 60-140 <br /> Surrogate a,a,a-Triuorotoluene 112 100 112 60-140 <br /> Matrix Spike Dup(1090079-MSD1) Source:S109022-30 Prepared&Analyzed 09/07/01 <br /> Benzene 107 0 025 mg/kg 100 ND 107 60-140 0 930 25 <br /> Toluene 101 0 025 100 ND 101 60-140 000 25 <br /> Ethylbenzene 103 0 025 100 ND 103 60-140 000 25 <br /> Xylenes(total) 298 0 025 300 ND 993 60440 0 335 25 <br /> Surrogate a a,a-Trifluorololuene 108 100 108 60-140 <br /> SIa Analytical- Sacramento 27w results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in as entirety <br /> i <br /> Page 10 of 16 <br />