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Sequoia <br />404 N Wlget lane <br />Walnut Creek cn 94598 <br />5 <br />(925) 986-9600-9600 <br />Analytical <br />FAX (925) 988-9673 <br />www secluo <br />Gettler Ryan, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 24 -Jul -00 11 33 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX in Air by llHi LUF-F <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />knalyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br />Effluent (Air) (W007143-01) Air Sampled 10 -Jul -00 10 35 Received 10 -Jul -00 13 20 <br />Purgeable Hydrocarbons 11 20 mg/ml Au 02 OG21017 13 -Jul -00 21 -Jul -00 DHS LUFT <br />Benzene 041 0 010 " <br />Toluene 022 0 010 <br />Ethylbenzene ND 0 010 " <br />Xylenes (total) ND 0 010 " <br />Surrogate a a,a-Tnfluorotoluene 933% 70-130 " <br />Influent (Air) (W007143-02) Air Sampled 10Ju1-00 10 37 Received 10 -Jul -00 13 20 <br />Purgeable Hydrocarbons 29 20 mg/ml Air 02 OG21017 13 -Jul -00 21 Jul -00 DHS LUFT <br />Benzene 5 3 0 010 " <br />Toluene 8 6 0 010 " <br />Ethylbenzene 066 0 010 " <br />Xylenes (total) 1 3 5 0 010 <br />Surrogate a a,a-Tnfluorotoluene 123 % 70-130 " <br />Sequoia Analytical - Walnut Creek The results to dus report apply to the samples analyzed;n accordance with the char <br />custody document TMs analytical report must be reproduced in its entirety <br />Page 3 of 15 <br />.21 <br />