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404 N wiget Lane <br /> Sequoia Walnut Creek C94598 <br /> 19z51 988 8-9600-9600 <br /> 4 <br /> FAX(9z5)988-9673 <br /> Analytical WWW W UOk abs i:Om <br /> Gcttler Ryan Inc -Dublin Project Unocal <br /> 6747 Sierra Court SUItC J Project Number Unocal# 2859 Reported <br /> Dubltn CA 94568 Project Manager Scott Polston 10-Jul-01 11 20 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Walnut Creek <br /> Reporting <br /> Analyte Result Ltmrt Units Dilution Batch Prepared Analyzed Method Notes <br /> VE-191140(W106451-04)Air Sampled 21-Jun-01 11 40 Received 22-Jun-01 15 55 <br /> Purgeable Hydrocarbons 81 10 mg/ml Air 02 I F22003 25-Jun-01 25-Jul-01 DHS LUFT P-02 <br /> Benzene 066 010 " <br /> Toluene 066 0 10 <br /> Ethylbenzene 043 0 10 " <br /> Xylenes(total) 048 0 10 " <br /> Methyl tent-butyl ether ND 0 50 " <br /> Surrogate a a a-Trifluorotoluene 137% 70-130 S-04 <br /> VE-1@1440(W106451-05)Air Sampled 21-Jun-01 14 40 Received 22-Jun-01 1555 <br /> Purgeable Hydrocarbons 77 10 mg/ml Air 02 i F22003 25-Jun-01 25-Jul-01 DHS LUFT P-02 <br /> Benzene 0 78 0-10 <br /> " <br /> oluene 0.55 010 <br /> 1Wthylbenzene 017 010 <br /> Xylenes(total) 0 70 010 " <br /> Methyl tert-butyl ether ND 050 CC-3 <br /> Surrogate a a a-Trifluorotoluene 88 0% 70-130 " <br /> 0 <br /> Sequoia Analytical- Walnut Creek The 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 its entirety <br /> Page 3 of 8 <br />