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f 4 <br /> 819 Striker Avenue,Suite 8 <br /> - Sacramento,CA 95834 <br /> Sequoia (916)921-9600 <br /> IZIFAX(916)921-0100 <br /> *F Analytical www.sequolatabs.com <br /> Blaine Tech Services, Inc. Project: Equiva,341 East Main St.,Ripon,CA <br /> 1680 Rogers Avenue Project Number: 010103-J1 Reported: <br /> San Jose CA,95112-1105 Project Manager: Nick Sudano 03/16/01 09:13 <br /> Total Purgeable Hydrocarbons (C&C12), BTEX and MTBE by DHS L,UFT - 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 1010097-EPA 5030E(PIT) <br /> Blank(1010097-BLKI) Prepared&Analyzed:01/11/01 <br /> Purgeable Hydrocarbons ND 50.0 ug/l <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-Tris luorotoluene 8.01 10.0 80.1 60-140 <br /> LCS(1010097-BSI) Prepared&Analyzed:0 1/11/0 1 -- <br /> Benzene 9.51 0.500 ug/1 10.0 95.1 70430 <br /> Toluene 9.59 0.500 10.0 95.9 70-130 <br /> lbenzene 9.55 0.500 10.0 95.5 70-130 <br /> nes(total) 28.6 0.500 30.0 95.3 70-130 <br /> Methyl cert-butyl ether 9.79 2,50 10.0 97.9 70-130 <br /> Surrogate:a,a,a-Tris luorotoluene 8.18 10.0 81.8 60-140 <br /> Matrix Spike(1010097-MSI) Source: S101059-06 Prepared&Analyzed: 01/11/01 <br /> Benzene 9.22 0.500 ug/1 10.0 ND 92.2 60-140 <br /> Toluene 9.85 0.500 10.0 ND 98.5 60-140 <br /> Ethylbenzene 9.62 0.500 10.0 ND 96.2 60-140 <br /> Xylenes(total) 29.0 0.500 30.0 0.765 94.1 60-140 <br /> Methyl tert-butyl ether 9.70 2.50 10.0 2.74 69.6 60-140 <br /> Surrogate:a,a,a-Tris luorotoluene 7.72 10.0 77.2 60-140 <br /> Matrix Spike Dup(1010097-MSD1) Source: 5101059-06 Prepared&Analyzed:0 1/11/0 1 <br /> Benzene 9.32 0.500 ug/l 10.0 ND 93.2 60-140 1.08 25 <br /> Toluene 9.71 0.500 10.0 ND 97,1 60-140 1.43 25 <br /> Ethylbenzene 9.50 0.500 10.0 ND 95.0 60-140 1.26 25 <br /> Xylenes(total) 28.7 0.500 30.0 0.765 93.1 60-140 1.04 25 <br /> Methyl tert-butyl ether 9.54 2.50 10.0 2.74 68.0 60-140 1.66 25 <br /> Surrogate:a,a,a-Tris luorotoluene 7.73 10.0 77.3 60-140 <br /> quoia 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 8 of 11 <br />