United States Code
USC most recently checked for updates: Sep 23, 2023
The demonstration pertaining to maximum allowable increases required under subsection (a)(3) shall not apply to maximum allowable increases for class II areas in the case of an expansion or modification of a major emitting facility which is in existence on
Any completed permit application under section 7410 of this title for a major emitting facility in any area to which this part applies shall be granted or denied not later than one year after the date of filing of such completed application.
| Maximum allowable increase (in micrograms per cubic meter) |
---|---|
Particulate matter: | |
Annual geometric mean | 19 |
Twenty-four-hour maximum | 37 |
Sulfur dioxide: | |
Annual arithmetic mean | 20 |
Twenty-four-hour maximum | 91 |
Three-hour maximum | 325 |
MAXIMUM ALLOWABLE INCREASE | ||
---|---|---|
(In micrograms per cubic meter) | ||
Period of exposure | Low terrain areas | High terrain areas |
24-hr maximum | 36 | 62 |
3-hr maximum | 130 | 221 |