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QSequoia <br />*qQF Analytical <br />404 N Wiget Lane <br />Walnut Creek CA 94598 <br />(925)988-9600 <br />FAX (925) 988-9673 <br />www sequolalabs com <br />Gettler Ryan, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron 4 9-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 25 -Jul -00 10 44 <br />Total Pureeable Hvdrocarbons (C6 -C12) and BTEX in Air (nnmvl by DHS LITFT <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br />Eff (Air) (W007080-05) Air <br />Sampled 06 -Jul -00 12 03 <br />Received 06 -Jul -00 13 45 <br />Purgeable Hydrocarbons <br />53 <br />24 ppmv 1 0GO5016 07 -Jul -00 07 -Jul -00 DHS LLTFT <br />Benzene <br />0 38 <br />0 016 " <br />Toluene <br />0 054 <br />0 013 <br />Ethylbenzene <br />ND <br />0 012 <br />Xylenes (total) <br />027 <br />0 012 <br />Inf (Air) (W007080-06) Air <br />Sampled 06 -Jul -00 12 06 <br />Received 06 -Jul -00 13 45 <br />Purgeable Hydrocarbons <br />860 <br />24 ppmv 1 OG05016 07 Jul -00 07 -Jul -00 DHS LUFT <br />Benzene <br />190 <br />0 016 " <br />Toluene <br />230 <br />0 013 <br />Ethylbenzene <br />20 <br />0 012 <br />Xylenes (total) <br />110 <br />0 012 " <br />• <br />0equoia Analytical. - Walnut Creek The results in this report apply to the tmdples analyzed to accordance with the chain of <br />custody document This analytical report must be reproduced in its entirety <br />Page 4 of 25 <br />