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U.S. Code as of:
01/19/04
Section 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.
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