Strategies to Deal with Monitored Exceedances When AERMOD Can't be Used

摘要

1. Monitored SO_2 concentrations exceed the new 1-hour SO_2 NAAQS at nearby Water Tower Monitor. 2. AERMOD is showing compliance at the monitoring station with predicted concentrations a factor of two lower than monitored. 3. The corner vortex was found to be the problem. 4. Solution to the problem found: - Determined the actual GEP stack height using wind tunnel modeling - Determined compliance at GEP height using HYWINMOD - Determined compliance using Hybrid AERMOD approach.