Making Strategic Choices for Modeling and Monitoring in Complex Terrain, 1994 Environmental Conference Proceedings
Robert J. Paine
Recent revisions to EPA’s Guideline on Air Quality Models (Revised)1 presents permit applicants with a choice of several models for complex terrain applications. These models (VALLEY, COMPLEX-I, RTDM, CTSCREEN, and CTDMPLUS) are considerably different from each other in terms of the treatment of plume transport and dispersion. The least conservative (lowest predicting) models are CTDMPLUS and RTDM, while the most conservative are VALLEY and COMPLEX-I. Meteorological input data requirements vary substantially with CTDMPLUS requiring the most extensive amount of data (up to plume height). RTDM and COMPLEX-I require on-site meteorological data up to stack height, while CTSCREEN and VALLEY use pre-determined input values for meteorological data.
Making Strategic Choices for Modeling and Monitoring in Complex Terrain, 1994 Environmental Conferen