PR-312-18208-E01 Statistical Technique for Estimating NOx Emissions from Infrequently Operated Units

This white paper presents a new approach for modeling emission inputs for dispersion modeling assessments. The approach is a paradigm shift from the current practice, which requires the simulation of source emissions by including all sources operating simultaneously for every hour during the year. This longstanding overly conservative approach does not adequately represent source emissions in some cases, especially from infrequent, non-continuously operated sources.