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Avenue <br /> ulte <br /> Sequoia 819 Striker Sacramento, <br /> C,.5 58 8 <br /> Sacramento,C1'195834 <br /> (9 16)921-9600 <br /> Analytical vvFAX(916)921-0100 <br /> ww.sequoialabs.com <br /> Blaine Tech Services,Inc. Project: Equiva,620 W. Charter Way, Stockton,CA <br /> 1680 Rogers Avenue Project Number: 01021542 Reported: <br /> San Jose CA,95112-1105 Project Manager: Nick Sudano 03/09/01 09:32 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE 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 1020263-EPA 5030B(PIT) <br /> LCS(1020263-BSI) Prepared&Analyzed:02/23/01 <br /> Benzene 9.11 0.500 ug/l 10.0 91,1 70-130 <br /> Toluene 9.61 0.500 10.0 96.1 70-130 <br /> Ethylbenzene 9.88 0.500 " I0.0 98.8 70-130 <br /> Xylenes(total) 30.5 0.500 " 30.0 102 70-130 <br /> Methyl tert-butyl ether 8.63 2.50 10.0 86.3 70-130 <br /> Surrogate:a,a,a-Triuorotoluene 9.58 10.0 95.8 60-140 <br /> Matrix Spike(1020263-MSI) Source: 5102246-05 Prepared:02/23/01 Analyzed:02/24/01 <br /> Benzene 9.42 0.500 ugA 10.0 ND 94.2 60-140 <br /> Toluene 9.91 0.500 10.0 ND 99.1 60-140 <br /> Ethylbenzene 10.4 0.500 10.0 ND 104 60-140 <br /> Xylenes(total) 31.9 0.500 " 30.0 ND 106 60-140 <br /> Methyl tent-butyl ether 8.54 2.50 10.0 ND 85.4 60-140 <br /> Surrogate:a,a,a-Trifluorotoluene 12.4 10.0 124 60-140 <br /> Matrix Spike Dup(1020263-MSD1) Source: 5102246-05 Prepared:02/23/01 Analyzed:02/24/01 <br /> Benzene 9.02 0.500 ug/i 10.0 ND 90.2 60-140 4.34 25 <br /> Toluene 9,52 0.500 _ 10.0 ND----.95.2 60-140 4.01 _ 25 <br /> Ethylbenzene 9.89 0.500 " 10.0 ND 98.9 60-140 5.03 25 <br /> Xylenes(total) 30.4 0.500 " 30.0 ND 101 60-140 4.82 25 <br /> Methyl tert-butyl ether 8.38 2.50 10.0 ND 83.8 60-140 1.89 25 <br /> Surrogate:a,a,a-Trifluorotoluene 11.2 10.0 112 60-140 <br /> Batch 1020283-EPA 5030B (per <br /> Blank(1020283-BLKI) Prepared&Analyzed:02/26/01 <br /> Purgeable Hydrocarbons ND 50.0 ug11 <br /> Benzene ND 0.500 " <br /> Toluene ND 0.500 " <br /> Ethylbenzene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> Methyl tert-butyl ether ND 2.50 " <br /> Surrogate:a,a,a-Trifluorotoluene 11.5 1110.0 115 60-140 <br /> Sequoia 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 10 of 14 <br />