§52.2421. Classification of regions.
40 C.F.R. § 52.2421
The Virginia plan was evaluated on the basis of the following classifications:
Notes, amendments, and revision history
Amendments
[37 FR 15090, July 27, 1972, as amended at 39 FR 16347, May 8, 1974]
Authority
Authority: 42 U.S.C. 7401 et seq.
Amendments
[40 FR 5521, Feb. 6, 1975]
Amendments
[37 FR 15090, July 27, 1972, as amended at 39 FR 16347, May 8, 1974]