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Sequoia <br />Lane <br />404a A9` 598 <br />Walnut Creek CA 44598 <br />a <br />(925) 988-9600 <br />Analytical <br />f 988-9673 <br />NiWw sequNi equolalabs <br />ND <br />Gettler Ryan,lnc - 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 />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />knalyte Result Lmut Units Dilution Batch Prepared Analyzed Method Note, <br />Effluent (Air) (W007143-01) Air Sampled <br />10 -Jul -00 10 35 Received 10 -Jul -00 13 20 <br />tert-Butyl alcohol <br />ND <br />20 mgJm' Air 1 OGI 1015 11 -Jul -00 l 1 -Jul -00 EPA 8260A <br />Methyl tert-butyl ether <br />ND <br />050 " <br />Di -isopropyl ether <br />ND <br />050 " <br />Ethyl tert-butyl ether <br />ND <br />050 " <br />tert-Amyl methyl ether <br />ND <br />050 " <br />Surrogate Dibromofluorom ethane <br />102% 50-150 " <br />Surrogate 12-Dichloroethane-d4 <br />920% 50-150 <br />Influent (Air) (W007143-02) Air Sampled <br />10,1ul-0010 37 Received 10 -Jul -00 13 20 <br />tent -Butyl alcohol <br />780 <br />500 mem' Air 25 OG11015 I 1 Jul -00 1 I -Jul 00 EPA 8260A <br />Methyl tert-butyl ether <br />2200 <br />130 250 " <br />Di -isopropyl ether <br />ND <br />050 1 " <br />Ethyl tert-butyl ether <br />140 <br />13 25 " <br />tert-Amyl methyl ether <br />ND <br />050 1 <br />Surrogate Dibromofluoromethane <br />860% 50-150 <br />Surrogate 12-Dichloroethane-d4 <br />174% 50-150 5-04 <br />Effluent (W007143-03) Water Sampled 10Jul-00 1120 <br />Received 10 -Jul -00 13 20 <br />Ethanol <br />ND <br />500 ugfl 1 OG10007 10 -Jul -00 IO -Jul -00 EPA 8260A <br />tert-Butyl alcohol <br />ND <br />100 <br />Methyl tert-butyl ether <br />ND <br />20 " <br />Di -isopropyl ether <br />ND <br />20 " <br />Ethyl tert-butyl ether <br />ND <br />20 " <br />tert-Amyl methyl ether <br />ND <br />20 <br />1,2-Dichloroethane <br />ND <br />20 " <br />Ethylene dibromide <br />ND <br />20 " <br />Surrogate Dibromofluorometh'ane <br />940% 50-150 <br />Surrogate 12-Diehloroethane44 <br />820% 50-150 <br />I <br />I <br />Sequoia Analytical - Walnut Creek <br />The results in ties report apply to the samples analyzed in accordance with the chainW <br />custody document This analytical report must be reproduced in its emirel <br />Page 5 of 15 <br />.tic. <br />