MODEL PREDICTION OF VOLATILE EMISSIONS.

Recently there has been increasing concern about the impact of volatile emissions from hazardous waste treatment, storage, and disposal facilities (TSDFs) on ambient air quality. These emissions will affect the ambient air quality of air toxics and oxidants in the atmosphere by acting as a precursor for photochemical reactions. The analysis of the impact of TSDF emissions requires reliable information about emission rates. The emission rates can be experimentally measured or can be estimated using theoretical models. This paper presents a comparison of measured and estimated emission rates based on recent field sampling results and theoretical models in the literature. The emission measurements, mostly sponsored by EPA, are used for comparison. The measurements are performed at landfills, surface impoundments, and a land treatment facility.