S.D. Codified Laws § 34A-9-12
Prospective application of chapter
The requirements of this chapter do not apply to actions undertaken or approved before March 2, 1974.
Source: SL 1974, ch 245, § 7; SDCL Supp, § 11-1A-12; SL 2011, ch 165, § 136.
S.D. Codified Laws § 34A-9-12