42 U.S.C. § 7424 — Assurance of adequacy of State plans

(a) State^* review of implementation plans that relate to major fuel burning sources. As soon as practicable, but no later than one year after August 7, 1977, each State must review the provisions of its implementation plan that relate to major fuel burning sources. The State must determine—

(1) how much compliance with the plan's requirements depends on major fuel-burning stationary sources using petroleum products or natural gas;

(2) how much the plan may reasonably be expected to be inadequate to meet this chapter's requirements in that State on a reliable and long-term basis because the plan depends on the use of those fuels; and

(3) how much compliance with the plan's requirements depends on using coal or coal derivatives that are not locally or regionally available.

Each State must promptly submit the results of its review and its determinations under this paragraph to the Administrator^* when the State completes them.

(b) Plan revision.

(1) No later than 18 months after August 7, 1977, the Administrator must review the States' submissions under subsection (a). The Administrator must require each State to revise its plan if, in the Administrator's judgment, that revision is necessary to assure that the plan will be adequate to assure compliance with this chapter's requirements in that State on a reliable and long-term basis. In making that judgment, the Administrator must take into account actual or potential prohibitions on using petroleum products or natural gas, or both, under any other authority of law.

(2) Before requiring a State to revise its plan under this subsection, the Administrator must take into account that State's review under paragraph (1) and consult with the State's Governor about the required revision.