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819 Striker Avenue,Suite S <br /> Sequoia Sacramento,CA 95834 <br /> 4 (916)921-9600 <br /> 4D qwr Analytical wFAX(916)921-0!00 <br /> ww.sequolalabs.corn <br /> OBlaine 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-C1.2), 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 1020283-EPA 5030B(P/T) <br /> LCS(1020283-BS1) Prepared&Analyzed:02/26/01 <br /> Benzene 9.40 0.500 ug/l 10.0 94.0 70-130 <br /> Toluene 9.94 0.500 10.0 99.4 70-130 <br /> Ethylbenzene 10.2 0.500 10.0 102 70-130 <br /> Xylenes(total) 31 A 0.500 30.0 105 70-130 <br /> Methyl tert-butyl ether 8.80 2.50 " 10.0 88.0 70-130 <br /> Surrogate:a,a,a-Tris luoroioluene 12.1 10.0 121 60-140 <br /> Matrix Spike(1020283-MSI) _ _Source:S102299-04 Prepared&Analyzed:02/26/01 <br /> Benzene 8.79 0.500 ug/l 10.0 3.21 55.8 60-140 Q-02 <br /> Toluene 9.32 0.500 10.0 ND 93.2 60-140 <br /> Ethylbenzene 9.74 0.500 10.0 1.42 83.2 60-140 <br /> Xylenes(total) 29.9 0.500 30.0 1.96 93.1 60-140 <br /> Mtyl tert-butyl ether 767 2,50 10.0 ND 76.7 60-140 <br /> W'-," <br /> ogate:a,a,a-Trifluorotoluene 11.3 10.0 113 60-140 <br /> Matrix Spike Dup(1020283-MSDI) _ - Source: S102299-04- Prepared&Analyzed:02/26/01 <br /> Benzene 8.87 0.500 ug/l 10.0 3.21 56.6 60-140 0.906 25 Q-02 <br /> Toluene 9.48 0.500 10.0 ND 94.8 60-140 1.70 25 <br /> Ethylbenzene 9.92 0.500 10.0 1.42 85.0 60-140 1.83 25 <br /> Xylenes(total) 30.5 0.500 30.0 1.96 95.1 60-140 1.99 25 <br /> Methyl tert-butyl ether 7.91 2.50 10.0 ND 79.1 60-140 3.08 25 <br /> Surrogate:a,a,a-Triuorotoluene 11.4 10.0 114 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 l 1 of 14 <br />