This folder contains the evaluation databases for the AERMOD dispersion model. Each subfolder contains the raw inputs and outputs for AERMET, AERMAP (if applicable), BPIP (if applicable) and AERMOD. A separate subfolder containing the observed concentration data is provided. Subfolders are also provided for other models included in the evaluation. A total of 17 databases were used in the evaluation of AERMOD. The databases and their role within the AERMOD performance evaluation are identified below: AGA Flat, Rural, Downwash, Independent Alaska Flat, Rural, Downwash, Developmental Baldwin Flat, Rural, Non-downwash, Independent Bowline Flat, Rural, Downwash, Developmental/Independent* Clify Creek Flat, Rural, Non-downwash, Independent DAEC Flat**, Rural, Downwash, Developmental EOCR Flat, Rural, Downwash, Independent Indianapolis Flat, Urban, Non-downwash, Developmental Kincaid SF6 Flat, Rural, Non-downwash, Developmental Kincaid SO2 Flat, Rural, Non-downwawh, Developmental Lee Wind Tunnel Flat, Rural, Downwash, Independent Lovett Terrain, Rural, Non-downwash, Developmental Martin's Creek Terrain, Rural, Non-downwash***, Independent Millstone Flat, Rural, Downwash, Developmental Prairie Grass Flat, Rural, Non-downwash, Developmental Tracy Terrain, Rural, Non-downwash, Independent Westvaco Terrain, Rural, Non-downwash, Independent * Half of the days for Bowline were randomly selected for use as a developmental database for PRIME, and the full year was used as an independent database. ** The DAEC database included some elevated terrain, which was included in the final evaluation results. *** Martin's Creek included some limited downwash effect due to nearby cooling towers, which was included in the final evaluation results. The files listed above were part of the original 17 datasets used to develop and evaluate AERMOD. Files listed below are newer datasets that have been developed for continued AERMOD evaluation: Denver-Julesburg Flat, Rural, Non-downwash, Independent