Cumulative exposure project
Subtitle: 1990 air toxics concentration estimates
Publisher: U.S. Environmental Protection Agency, Science Advisory Board
Published: 1999
Place of publication: Washington, D.C
Language: eng
Format: [electronic resource] :
Subjects: Hazardous substances; Environmental aspects; Pollution; Measurement; Air
Description: Contains data on estimated concentration levels for 148 hazardous air pollutants (HAPs). Estimates were developed through a national modeling study, the Assessment System for Population Exposure Nationwide, or ASPEN. Results were based on 1990 emissions information on the average concentrations of HAPs in outdoor air for each census tract in the continental United States.
Notes: "State-by-State ASCII files, tabular format."--surface.

Title from disc label.

System requirements: IBM PC (486 or Pentium recommended) or compatible; 5MB RAM; 10MB of free disk space; CD-ROM drive.