(a) A no-discharge zone may be established by State prohibition for any discharge listed in Sec. 1700.4 or Sec. 1700.5 following the procedures in Sec. 1700.9. A no-discharge zone established by a State using these procedures may apply only to those discharges that have been preempted from other State or local regulation pursuant to Sec. 1700.6.
(b) A no-discharge zone may be established by EPA prohibition for any discharge listed in Sec. 1700.4 or Sec. 1700.5 following the procedures in Sec. 1700.10.