§ 71.21 Program overview.

(a) The regulations in this subpart provide for a limited, Federal, title V, permit program to establish alternative emission limitations for early reductions sources that have demonstrated qualifying reductions of hazardous air pollutants under section 112(i)(5) of the Act. A permit issued under this subpart which establishes such an enforceable alternative emission limitation shall grant all emissions units in the early reductions source a six-year extension from otherwise applicable dates of compliance for standards promulgated under section 112(d) of the Act.