EPA Science Inventory

NATIONAL-SCALE ASSESSMENT OF AIR TOXICS RISKS

Description:

The national-scale assessment of air toxics risks is a modeling assessment which combines emission inventory development, atmospheric fate and transport modeling, exposure modeling, and risk assessment to characterize the risk associated with inhaling air toxics from outdoor sources. This national-scale effort will be initiated for the base year 1996 and repeated every three years thereafter to track trends and inform program development.

Purpose/Objective:

Provide broad-scale understanding of inhalation risks for a subset of atmospherically-emitted air toxics to inform further data-gathering efforts and priority-setting for the EPA's Air Toxics Programs.

URLs/Downloads:

NATIONAL AIR TOXICS ASSESSMENTS WEBSITE

SCIENTIFIC PEER REVIEW OF THE NATIONAL-SCALE ASSESSMENT

Record Details:

Record Type: PROJECT (ASSESSMENT DOCUMENT)
Projected Completion Date: 12/31/2014
Record Last Revised: 01/07/2014
Record Created: 11/10/2003
Record Released: 11/10/2003
OMB Category: Influential
Record ID: 73535

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF AIR AND RADIATION

OFFICE OF AIR QUALITY PLANNING AND STANDARDS

HEALTH AND ENVIRONMENTAL IMPACTS DIVISION

SECTOR BASED ASSESSMENT GROUP