S.D. Codified Laws § 34A-2-26
Biennial review of decisions to allow discharge waste
A decision issued pursuant to § 34A-2-24 shall be reviewed at least every two years.
Source: SL 1973, ch 280, § 8 (2); SDCL Supp, § 46-25-44; SL 1988, ch 285, § 6.
S.D. Codified Laws § 34A-2-26