[Code of Federal Regulations]
[Title 40, Volume 3]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR52.07]

[Page 11]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 52--APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS--Table of Contents
 
                      Subpart A--General Provisions
 
Sec. 52.07  Control strategies.

    (a) Each subpart specifies in what respects the control strategies 
are approved or disapproved. Where emission limitations with a future 
effective date are employed to carry out a control strategy, approval of 
the control strategy and the implementing regulations does not supersede 
the requirements of subpart N of this chapter relating to compliance 
schedules for individual sources or categories of sources. Compliance 
schedules for individual sources or categories of sources must require 
such sources to comply with applicable requirements of the plan as 
expeditiously as practicable, where the requirement is part of a control 
strategy designed to attain a primary standard, or within a reasonable 
time, where the requirement is part of a control strategy designed to 
attain a secondary standard. All sources must be required to comply with 
applicable requirements of the plan no later than the date specified in 
this part for attainment of the national standard which the requirement 
is intended to implement.
    (b) A control strategy may be disapproved as inadequate because it 
is not sufficiently comprehensive, although all regulations provided to 
carry out the strategy may themselves be approved. In this case, 
regulations for carrying out necessary additional measures are 
promulgated in the subpart.
    (c) Where a control strategy is adequate to attain and maintain a 
national standard but one or more of the regulations to carry it out is 
not adopted or not enforceable by the State, the control strategy is 
approved and the necessary regulations are promulgated by the 
Administrator.
    (d) Where a control strategy is adequate to attain and maintain air 
quality better than that provided for by a national standard but one or 
more of the regulations to carry it out is not adopted or not 
enforceable by the State, the control strategy is approved and 
substitute regulations necessary to attain and maintain the national 
standard are promulgated.

[37 FR 10846, May 31, 1972, as amended at 37 FR 19807, Sept. 22, 1972; 
51 FR 40676, Nov. 7, 1986]