Okla. Stat. tit. 27A, § 27A-2-6-205

of Department.

A. Except as otherwise provided in subsection B of this

section, it shall be unlawful for any facility, activity or entity

regulated by the Department of Environmental Quality pursuant to the

Oklahoma Pollutant Discharge Elimination System Act to discharge any

pollutant into waters of the state or elsewhere without first

obtaining a permit from the Executive Director.

B. The Environmental Quality Board shall promulgate rules which

prescribe permit requirements applicable to discharges composed

entirely of stormwater. The rules may require permits on a case-by-

case basis, exempt categories of discharges, or provide a schedule

for obtaining a permit. No later than the date that the Department

is to receive authorization to administer a state National Pollutant

Discharge Elimination Systems program, the Board shall have

promulgated rules for stormwater discharges which comply with

Environmental Protection Agency requirements for approval of the

state National Pollutant Discharge Elimination Systems program.

C. The Department of Environmental Quality shall have the

authority to determine whether a facility, activity or entity

regulated by the Department pursuant to the Oklahoma Pollutant

Discharge Elimination System Act is required to obtain a stormwater

permit. No other state agency shall condition any license, permit

or other form of authorization issued by that agency upon the

applicant obtaining a stormwater permit from the Department if the

applicant is not required to obtain a stormwater permit pursuant to

Department statutes and rules promulgated by the Board.