Document o99mwzz7mbkY5NBgGxZyY9dN7

AR226-2247 From: Bernard J R eilly on 01/15/2002 04:37 PM * To: David M Rurak/AE/DuPont@ DuPont, George H Senkler_Jr/AE/DuPont@ DuPont, Paul J Bossert/AE/DuPont@ DuPont, Martha L Rees/AE/DuPont@ DuPont@ DuPont, Isidoros J Zahikos/AE/DuPont@ DuPont, Robert W Rickard/AE/DuPont@ DuPont, Janet H W aters/CL/DuPont@ DuPont, R C lifton W ebb/AE/DuPont@ DuPont cc- Gerald L Kennedy/AE/DuPont@ DuPont, John R Bowman/AE/DuPont@ DuPont, M. Ann ' Bradley/STB/DUP@ DUP, Paula L Durst/STB/DUP@ DUP, Heather H. Jones/STB/DUP@DUP, Andrea V M allnowski/AE/DuPont@ DuPont, Andrew S Hartten/AE/DuPont@ DuPont Subject: A ir Model Concentrations at Cistern Locations - Privileged Com m unication Leadership Team: The attached note from Rob Pinchot shows the estimated average annual vapor concentrations in the ambient air at the 4 cistern locations. -Bemie _______________ Forwarded by Bernard J Reilly/AE/DuPont on 01/15/2002 04:31 PM R obert F P in ch o t 01/15/2002 03:27 PM ______________________________ To: Bernard J Reilly/AE/DuPont@ DuPont cc: Subject: Model Results- Privileged Com munication See attached for the modeling results for the cistern locations. Rob _________________ Forwarded by Robert F Pinchot/DEV/AE/DuPont on 01/15/2002 03:26 P M -------- /J f Debbie J Mulrooney U' 01/15/2002 03:21 PM To: Robert F Pinchot/DEV/AE/DuPont@ DuPont cc: Subject: Model Results Rob, ' The attached spreadsheet shows the vapor concentrations at the four specific receptor locations. These concentrations include the reduction of mass due to deposition (what the model calls depletion). C8 S pecific R eceptors.xls The average deposition rate across the entire area is: particulate - 0.00537 g/m2/yr vapor - 0.000479 g/m2/yr This is over a 5000m x 3000m receptor grid area. Debbie EDD0017648 Ik EDD0 0 1 7 64 9