Continuing the air quality discussion from Part 3, this webinar will cover all aspects of PSD modeling, including the new definition of ambient air and the revised models guideline.  Protocol agreements, dispersion modeling, meteorological and topographic data, and interpreting model results will also be discussed.

Class 1 areas pose additional impacts that will be discussed beginning with the definition of Class 1 protection, the FLAG report, visibility analyses, and the effects on soils, vegetation, as well as the role of the Federal Land Manager.