Document yp4v34KmBvYLQm9QjMnanqan2

AR226-2325 ^ John W M ilro yJII 04/03/2003 05:41 PM To: co: Subject: Catherine A Barton/AE/DuPont@ DuPont Stephen R Hastings/DDE/DuPont@ DuPont, Ann K Masse/HO/DuPont@ DuPont, Charles J Zarzecki/AE/DuPont@ DuPont Re: Data fo r a ir dispersion modeling D This is the data for DuPont Dow, building 1163, C 8 release to the am osphere. The data is based on a typical 96 hour cam paign. In that campaign C8 would be released over a ten hour drying cycle, with the drying cycles occurring after hours 34,58,82 and 106 into the cycle. Release rates vary from 0.3 to 0.8 pounds o f pure C 8 released over the ten hour cycle. Based on a prelim inary forecast the plant will operate 110 days in 2003. The stack is round, 31 inches in diam eter, discharges 5500 A C FM air at approxim ately 90 C, and the discharge is up. Hope this meets your needs. John EID747746