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Sequoia 819 Striker Avenue,Suite 8 <br /> 4i`-� - - _ - _ - — Sacramento )9 95834 <br /> �� (916)921-9600 <br /> Anal ical FAX(916)921-0100 <br /> qWwww sequolalabs com <br /> SECOR International-Rancho Cordova Prolect ARCO 434,Lodi,CA <br /> 3017 Kilgore Road,Suite 100 Project Number NIA Reported <br /> Rancho Cordova CA,95670 PmJect Manager Rusty Benkosky 10/01/01 14 56 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT-Quality Control <br /> Sequoia Analytical-Sacramento <br /> Reporting Spike Source %REC RPD <br /> [Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1090225-EPA 50308(PIT) --- <br /> Blank(1090225-BLK1) Prepared&Analyzed 09/20/01 <br /> Purgeable hydrocarbons ND 50 ugll <br /> Benzene ND 0 50 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate a a a Trifluorotoluene 115 10 0 115 60-140 <br /> LCS(1090225-BS1) PEared&Analyzed 09/20/01 <br /> Benzene 114 050 ug/l 10 0 114 70 130 <br /> Toluene 10 6 050 10 0 106 70 130 <br /> Ethylbenzene 105 050 10 0 105 70-130 <br /> Xylenes(total) 32 3 050 300 108 70-130 <br /> Surrogate a a a Trifluorotoluene 138 100 138 60-140 <br /> Matrix Spike(1090225-MSI) Source S109255-06 Prepared&Analyzed 09/20/01 <br /> Benzene 11 1 050 ug/I to 0 4 8 63 0 60-140 <br /> Toluene 10 3 050 100 ND 103 60-140 <br /> Ethylbenzene 10 3 050 l0 0 ND 103 60-140 <br /> Xylenes(total) 31 5 050 300 ND 105 60-140 <br /> Surrogate a a a-Trifluorotoluene 132 100 132 60-140 <br /> Matn_x_Spike Dup(1090225-MSD1) Source S109255-06 Prepared&Analyzed 09/20/01 <br /> Benzene 11 7 050 ug/l 100 4 8 69 0 60-140 5 26 25 <br /> Toluene 10 8 050 100 ND 108 60-140 4 74 25 <br /> Ethylbenzene 10 8 050 too ND 108 60-140 4 74 25 <br /> Xylenes(total) 32 9 050 " 300 ND 110 60-140 4 35 25 <br /> Surrogate a a a-Trifluorotoluene 133 100 133 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the char <br /> of custody document This analytical report must be reproduced in its entirety <br /> Page Page 9 of 12 <br />