Demonstration of Photochemical Grid Model Usage for Ozone Control Assessment

The document discussed the use of a photochemical grid model, specifically the Urban Airshed Model, to assess the impact of emission control measures on photochemical smog formation in urban areas, using Tulsa, Oklahoma as a case study. The model's effectiveness as an ozone predictive tool was evaluated by comparing its predictions with actual air quality observations. It was then used to estimate future ambient ozone concentrations based on different emission scenarios. This study was part of a broader EPA initiative to demonstrate and evaluate photochemical grid models for air quality planning, with similar studies conducted in cities like St. Louis, Denver, and ongoing efforts in Philadelphia.