Okla. Stat. tit. 27A, § 27A-1016: Cessation of powers of CTT and Department

At such time as the Central Treatment Trust's National Pollution

Discharge Elimination System permit terminates, and any application

for issuance of an interim, successor, renewal or substitute permit

has been finally rejected or abandoned, or the CTT's waste treatment

system is sold or leased to a for-profit entity, the CTT shall so

certify to the agencies designated in Section 3 of this act,

whereupon all powers granted to the CTT and the Department under

this act shall prospectively cease.