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Sequoia <br />� Analytical <br />404 N Wiget Lane <br />Walnut Creels CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />www sequolalabs corn <br />Gettler Ryan Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron SS#9-5775 Reported <br />Dublin CA, 94568 Project Manager Scott Polston 21 -Apr -00 10 43 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX in Air (ppnly) by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />knalyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br />INF (W004445-01) Air Sampled 18 -Apr -00 07 44 Received 19-Apr4)0 16 05 <br />Purgeable Hydrocarbons 2000 24 ppmv 1 OD14004 20 -Apr -00 20 -Apr -00 DHS LUFT <br />Benzene 470 0 016 <br />Toluene 460 0 013 <br />Ethylbenzene 28 0 012 <br />Xylenes (total) 120 0 012 " <br />EFF (W004445-02) Air Sampled 18 -Apr -00 07 42 Received 19 -Apr -00 16 05 <br />Purgeable Hydrocarbons 28 24 ppmv 1 OD14004 20 -Apr -00 20 -Apr -00 DHS LUFT <br />Benzene 19 0 016 " <br />Toluene 5 2 0 013 " <br />Ethylbenzene 088 0 012 " <br />Xylenes (total) 5 7 0 012 <br />• <br />Sequoia Analytical - Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br />0 custody document This analytical report must be reproduced in its entirety <br />Page 3 of 8 <br />