Green Book Related Air Quality and Designation Websites
- EPA Criteria Air Pollutants Website
- EPA Air Quality Design Values Website
- EPA National Ambient Air Quality Standards (NAAQS) Table
- EPA State Implementation Plan (SIP) Status and Information Website
- 40 CFR Part 81
These are links to the entire 40 CFR Part 81 area designation notice for all states.
- 40 CFR PART 81 - Designation of Areas for Air Quality Planning Purposes
This accesses the Electronic Code of Federal Regulations (e-CFR) database and links to the latest 40 CFR Part 81 published on the Government Printing Office (GPO) web site. After clicking on the link, page down to "Subpart C Section 107 Attainment Status Designations" and click on the link next to a state. Within the state, the nonattainment areas are listed by NAAQS.
- 40 CFR PART 81 Air Quality Designations and Classifications (pdf) (165 pp, 9.3 MB)
This is the November 6, 1991 version of the 40 CFR Part 81 area designation notice.
- 40 CFR PART 81 - Designation of Areas for Air Quality Planning Purposes