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404 N Wlget Lane <br />Sequoia Walnut Geek. 98 44598 <br />(925)988-9600 <br />FAX (925) 98-9673 <br />Analytical www sequolaialis coin <br />er Ryan, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron 49-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 26 -Jul -00 10 48 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX in Air (ppmv) by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br />EFFLUENT (W007366-05) Air Sampled 19 -Jul -00 12 00 Received 19,1u1-00 14 00 <br />Purgeable Hvdrocarbons <br />ND <br />24 ppmv I OG21004 20 -Jul -00 20 -Jul -00 DHS LUFT <br />Benzene <br />012 <br />0 016 „ <br />Toluene <br />ND <br />0 013 " <br />Ethylbenzene <br />ND <br />0 012 " - <br />Xvlenes (total) <br />ND <br />0 012 " <br />INFLUENT (W007366-06) Air <br />Sampled 19,Jul-00 12 05 <br />Received 194ul-00 14 00 <br />Purgeable Hydrocarbons <br />350 <br />2 4 ppmv 1 OG21004 21 -Jul -00 21 -Jul -00 DHS LUFT <br />Benzene <br />56 <br />0 016 " <br />Toluene <br />120 <br />0 013 <br />Ethylbenzene <br />10 <br />0 012 <br />Xylenes (total) <br />47 <br />0 012 " <br />Suoia Analytical - Walnut Creek The results to this report apply to the samples analyzed in accordance with the chain of <br />custody document Thu analytical report must be reproduced in 'is entirely <br />Page 4 of 11 <br />.2. <br />