Okla. Stat. tit. 19, § 288.2
The county clerk shall not file of record any plat which contains any lot of less than two and one-half (2 1/2) acres located outside the corporate limits of a city or town unless the plat bears the stamp of approval of the Department of Environmental Quality as provided in Section 2-6-403 of Title 27A of the Oklahoma Statutes.
Laws 1985, HB 1198, c. 272, § 2, eff. November 1, 1985; Amended by Laws 1999, SB 417, c. 284, § 5, emerg. eff. May 27, 1999 (superseded document available).