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C i i) <br />Sequoia <br />IwoAnalytical <br />404 N WISet Lane <br />Walnut Creek CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />www sequoialab5 corn <br />Gettler Ryan, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite 7 Project Number Chevron # 9-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 19 -Apr -00 11 39 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX in Air (ppmv) by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Inalyte Result Limit Units Dilution Batch Prepared Analvzed Method Note <br />Eff (07 56) (W004304 -0i) Air Sampled 12 -Apr -0007 56 Received 13 -Apr -00 17 10 <br />Purgeable Hydrocarbons <br />270 <br />24 ppmv 1 OD14004 <br />14 -Apr -00 <br />Benzene <br />34 <br />0 016 " <br />Toluene <br />87 <br />0 013 <br />Ethylbenzene <br />13 <br />0 012 " <br />^ <br />Xylenes (total) <br />61 <br />0 012 " <br />Inf (07 59) (W004304412) Air <br />Sampled <br />12 -Apr -00 07 59 <br />Received 13 -Apr -0017 10 <br />Purgeable Hydrocarbons <br />3600 <br />2 4 ppmv 1 OD14004 <br />14 -Apr -00 <br />Benzene <br />880 <br />0 016 <br />Toluene <br />880 <br />0 013 <br />Ethylbenzene <br />54 <br />0 012 <br />Xylenes (total) <br />230 <br />0 012 <br />~ <br />Eff (15 15) (W004304-03) Air <br />Sampled <br />12 -Apr -0015 15 <br />Received 13 -Apr -00 17 10 <br />Purgeable Hydrocarbons <br />650 <br />2 4 ppmv 1 OD14004 <br />14 -Apr -00 <br />150 <br />0 016 <br />*enzene <br />oluene <br />290 <br />0 013 <br />Ethylbenzene <br />40 <br />0 012 " <br />Xylenes (total) <br />190 <br />0 012 <br />Inf (15 25) (W004304-04) Air <br />Sampled <br />12 -Apr -0015 25 <br />Received 13 -Apr -00 17 10 <br />Purgeable Hydrocarbons <br />3300 <br />2 4 ppmv 1 OD14004 <br />14 -Apr -00 <br />Benzene <br />830 <br />0 016 ~ <br />~ <br />Toluene <br />700 <br />0 013 " <br />Ethylbenzene <br />50 <br />0 Oil <br />~ <br />Xylenes (total) <br />250 <br />0 012 " ~ <br />14 -Apr 00 DHS LUFT <br />14 -Apr -00 DHS LUFT <br />14 -Apr -00 DHS LUFT <br />14 -Apr -00 DHS LUFT <br />Sequoia Analytical - Walnut Creek The results in this report apply to the samples anah.ed in accordance with the chain of <br />custody documem This analytical report must be reproduced in its entirety <br />Page 4 of 22 <br />