PUBLIC LAW 95-95—AUG. 7, 1977 subsection, the Administrator shall provide notice and opportunity for public hearing. "(h)(1) For purposes of this section, if in the judgment of the Administrator, it is not feasible to prescribe or enforce a standard of performance, he may instead promulgate a design, equipment, work practice, or operational standard, or combination thereof, which reflects the best technological system of continuous emission reduction which (taking into consideration the cost of achieving such emission reduction, and any non-air quality health and environmental impact and energy requirements) the Administrator determines has been adequately demonstrated. In the event the Administrator promulgates a design or equipment standard under this subsection, he shall include as part of such standard such requirements as will assure the proper operation and maintenance of any such element of design or equipment. "(2) For the purpose of this subsection, the phrase 'not feasible to prescribe or enforce a standard of performance' means any situation in which the Administrator determines that (A) a pollutant or pollutants cannot be emitted through a conveyance designed and constructed to emit or capture such pollutant, or that any requirement for, or use of, such a conveyance would be inconsistent with any Federal, State, or local law, or (B) the application of measurement methodology to a particular class of sources is not practicable due to technological or economic limitations. "(3) If after notice and opportunity for public hearing, any person establishes to the satisfaction of the Administrator that an alternative means of emission limitation will achieve a reduction in emissions of any air pollutant at least equivalent to the reduction in emissions of such air pollutant achieved under the requirements of paragraph (1), the Administrator shall permit the use of such alternative by the source for purposes of compliance with this section with respect to such pollutant. "(4) Any standard promulgated under paragraph (1) shall be promul'vated in terms of standard of performance whenever it becomes feasible to promulgate and enforce such standard in such terms. " (i) Any regulations promulgated by the Administrator under this section applicable to grain elevators shall not apply to country elevators (as defined by the Administrator) which have a storage capacity of less than two million five hundred thousand bushels." (b)(1) Section 111(d)(1) of such Act is amended by striking out "emissions standards" in each place it appears and inserting in lieu thereof "standards of performance" and by adding at the end thereof the following new sentence: "Regulations of the Administrator under this paragraph shall permit the State in applying a standard of performance to any particular source under a plan submitted under this paragraph to take into consideration, among other factors, the remaining useful life of the existing source to which such standard applies.". (2) Section 111(d)(2) of such Act is amended by adding at the end thereof the following new sentence: "In promulgating a standard of performance under a plan prescribed under this paragraph, the Administrator shall take into consideration, among other factors, remaining useful lives of the sources in the category of sources to which such standard applies.". (c)(1)(A) Section 111(a)(1) of the Clean Air Act, defining standard of performance, is amended to read as follows:
91 STAT. 699
Design or equipment standards.
"Not feasible to prescribe or enforce a standard of performance."
Alternative emission limitation. Notice and hearing.
Standards of performance. 42 USC 7411.
"Standard of performance."
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