NAAQS (National Ambient Air Quality Standards) Exposure Model (NEM) Applied to Carbon Monoxide: Addendum

摘要

The report describes the results obtained when the carbon monoxide (CO) version of NEM is used to estimate national exposures associated with attaining the current CO standard (9 ppm, one observed exceedance). This standard was not analyzed in the basic report of the same title (EPA-450/5-83-003). NEM is a simulation model that simulates the intersection of a population with pollutant concentrations over space and time to estimate exposures that would obtain if various alternative NAAQS were just met. Estimates are presented for adults with cardiovascular disease in four urban study areas and for a nationwide extrapolation.