
From the U.S. Code Online via GPO Access
[wais.access.gpo.gov]
[Laws in effect as of January 23, 2000]
[Document not affected by Public Laws enacted between
  January 23, 2000 and December 4, 2001]
[CITE: 42USC7478]

 
                 TITLE 42--THE PUBLIC HEALTH AND WELFARE
 
            CHAPTER 85--AIR POLLUTION PREVENTION AND CONTROL
 
                  SUBCHAPTER I--PROGRAMS AND ACTIVITIES
 
     Part C--Prevention of Significant Deterioration of Air Quality
 
                          subpart i--clean air
 
Sec. 7478. Period before plan approval


(a) Existing regulations to remain in effect

    Until such time as an applicable implementation plan is in effect 
for any area, which plan meets the requirements of this part to prevent 
significant deterioration of air quality with respect to any air 
pollutant, applicable regulations under this chapter prior to August 7, 
1977, shall remain in effect to prevent significant deterioration of air 
quality in any such area for any such pollutant except as otherwise 
provided in subsection (b) of this section.

(b) Regulations deemed amended; construction commenced after June 1, 
        1975

    If any regulation in effect prior to August 7, 1977, to prevent 
significant deterioration of air quality would be inconsistent with the 
requirements of section 7472(a), section 7473(b) or section 7474(a) of 
this title, then such regulations shall be deemed amended so as to 
conform with such requirements. In the case of a facility on which 
construction was commenced (in accordance with the definition of 
``commenced'' in section 7479(2) of this title) after June 1, 1975, and 
prior to August 7, 1977, the review and permitting of such facility 
shall be in accordance with the regulations for the prevention of 
significant deterioration in effect prior to August 7, 1977.

(July 14, 1955, ch. 360, title I, Sec. 168, as added Pub. L. 95-95, 
title I, Sec. 127(a), Aug. 7, 1977, 91 Stat. 740; amended Pub. L. 95-
190, Sec. 14(a)(52), Nov. 16, 1977, 91 Stat. 1402.)


                               Amendments

    1977--Subsec. (b). Pub. L. 95-190 substituted ``(in accordance with 
the definition of `commenced' in section 7479(2) of this title)'' for 
``in accordance with this definition''.
