On April 19, 2013, the USFS received the requested near-field deposition modeling utilizing the EPA/AMS AERMOD modeling system (Version 12060). The USFS reviewed the modeling analysis provided and concluded that the modeling performed was not adequate because the procedures employed by JBR for estimating total nitrogen deposition would not be considered conservative for a screening level analysis.
U.S. Forest Service. 2013a. Revised Nitrogen Deposition Modeling for Saguaro East National Park. Memorandum from Brett Anderson, Atmospheric Modeling Coordinator, U.S. Forest Service, to Michele Girard, Watershed Program Manager, Coronado National Forest. June 11.