15 



manner as promulgated. (July 14, 1955, ch. 360. 

 title I, § 109, as added Dec. 31, 1970, Pub. L. 91-«04, 

 § 4(a), 84 Stat. 1679.) 



§1857c-5. State implementation plans for national pri- 

 mary and secondary ambient air quality standards. 



(a) Submission to .Administrator; time for submis- 

 sion; State procedures; required contents of plans 

 for approval by Administrator; approval of revised 

 plan by .Administrator. 



(1) Each State shall, after reasonable notice and 

 public hearings, adopt and submit to the Adminis- 

 trator, within nine months after the promulgation of 

 a national primary ambient air quality standard (or 

 any revision thereof) under section 1857c-4 of this 

 title for any air pollutant, a plan which provides for 

 Implementation, maintenance, and enforcement of 

 such primary standard in each air quality control 

 region (or portion thereof) within such State. In 

 addition, such State shall adopt and submit to the 

 Administrator (either as a part of a plan submitted 

 under the preceding sentence or separately) within 

 nine months after the promulgation of a national 

 ambient air quality secondary standard (or revision 

 thereof) , a plan which provides for implementation, 

 maintenance, and enforcement of such secondary 

 standard In each air quality control region (or por- 

 tion thereof) within such State. Unless a separate 

 public hearing is provided, each State shall consider 

 its plan implementing such secondary standard at 

 the hearing required by the first sentence of this 

 paragraph. 



(2) The Administrator shall, within four months 

 after the date required for submission of a plan 

 under paragraph ( 1 ) , approve or disapprove such 

 plan, or any portion thereof. The Administrator 

 shall approve such plan or any portion thereof, if 

 he determines that it was adopted after reasonable 

 notice and hearing and that — 



(A) (1) in the case of a plan Implementing a na- 

 tional primary ambient air quality standard, it 

 provides for the attainment of such primary 

 standard as expeditiously as practicable but (sub- 

 ject to subsection (e) of this section) in no case 

 later than three years from the date of approval 

 of such plan (or any revision thereof to take 

 account of a revised primary standard) : and (11) 

 In the case of a plan Implementing a national sec- 

 ondary ambient air quality standard, it specifies a 

 reasonable time at which such secondary standard 

 will be attained: 



(B) it includes emission limitations, schedules, 

 and timetables for compliance with such limita- 

 tions, and such other measures as may be neces- 

 sary to insure attainment and maintenance of such 

 primary or secondary standard, including, but not 

 limited to, land-use and transportation controls; 



(C) it includes provision for establishment and 

 operation of appropriate devices, methods, sys- 

 tems, and procedures necessary to (i) monitor, 

 compile, and analyze data on ambient air quality 

 and, (ii) upon request, make such data available 

 to the Administrator; 



(D) it includes a procedure, meeting the re- 

 quirements of paragraph (4), for review (prior 

 to construction or modification) of the location 



of new sources to which a standard of perform- 

 ance will apply; 



(E) it contains adequate provisions for inter- 

 governmental cooperation. Including measures 

 necessary to insure that emissions of air pollutants 

 from sources located in any air quality control 

 region will not interfere with the attainment or 

 maintenance of such primary or secondary stand- 

 ard in any portion of such region outside of such 

 State or In any other air quality control region; 



(P) it provides (i) necessary assurances that the 

 State will have adequate personnel, funding, and 

 authority to carry out such implementation plan, 

 (11) requirements for installation of equipment by 

 owners or operators of stationary sources to moni- 

 tor emissions from such sources, (ili) for periodic 

 reports on the nature and amounts of such emis- 

 sions; (Iv) that such reports shall be correlated 

 by the State agency with any emission limitations 

 or standards established pursuant to this chapter, 

 which reports shall be available at reasonable 

 times for public inspection; and (v) for authority 

 comparable to that in section 1857h-l of this title, 

 and adequate contingency plans to implement 

 such authority; 



(G) it provides, to the extent necessary and 

 practicable, for periodic Inspection and testing of 

 motor vehicles to enforce compliance with appli- 

 cable emission standards; and 



(H) It provides for revision, after public hear- 

 ings, of such plan <i) from time to time as may be 

 necessary to take account of revisions of such na- 

 tional primary or secondary ambient air quality 

 standard or the availability of improved or more 

 expeditious methods of achieving such primary or 

 secondary standard; or (ii) whenever the Adminis- 

 trator finds on the basis of information available 

 to him that the plan is substantially inadequate to 

 achieve the national ambient air quality primary 

 or secondary standard which It implements. 



(3) The Administrator shall approve any revision 

 of an implementation plan applicable to an air 

 quality control region if he determines that it meets 

 the requirements of paragraph (2) and has been 

 adopted by the State after reasonable notice and 

 public hearings. 



(4) The procedure referred to in paragraph (2) 

 (D) for review, prior to construction or modification, 

 of the location of new sources shall 'A) provide for 

 adequate authority to prevent the construction or 

 modification of any new source to which a standard 

 of performance under section 1857c-6 of this title 

 win apply at any location which the State deter- 

 mines will prevent the attainment or maintenance 

 within any air quality control region (or portion 

 thereof) within such State of a national ambient 

 air quality primary or secondary standard, and (B) 

 require that prior to commencing construction or 

 modification of any such source, the owner or opera- 

 tor thereof shall submit to such State such informa- 

 tion as may be necessary to permit the State to make 

 a determination under clause (A) . 



(b) Extension of period for submission of plan imple- 

 menting national secondary ambient air quality 

 standard. 

 The Administrator may, wherever he determines 



