Citation:

Impact/Purpose:

EPA uses this product in the 1996 National Scale Assessment of the National Air Toxics Assessment, which estimated ambient concentrations, exposures, and health risks to hazardous air pollutants.

Description:

The product is a data set of estimates of 1996 emissions of hazardous air pollutants for every county in the US, with sufficient detail on source characteristics to support dispersion modeling, projection to future years, etc. To support NSA/NATA the inventory must be delivered in a specific form and format to interface properly with the ASPEN dispersion model. THIS PRODUCT HAS BEEN SUPERSEDED BY THE EMISSION INVENTORIES FOR THE 1999 NATIONAL AIR TOXICS ASSESSMENT - SEE RECORD 73920.

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