Iowa Admin. Code rr. 567-31.4 - Preconstruction review permit program
(1) Sources shall
comply with the requirements of Section 110(a)(2)(D)(i) of the Act for any new
major stationary source or major modification as defined in 31.3(1). The
definitions in 31.3(1) for "major stationary source" and "major modification"
planning to locate in any area designated as attainment or unclassifiable for
any national ambient air quality standard pursuant to Section 107 of the Act,
apply when that source or modification would cause or contribute to a violation
of any national ambient air quality standard.
(2) A major source or major modification will be considered to
cause or contribute to a violation of a national ambient air quality standard
when such source or modification would, at a minimum, exceed the following
significance levels at any locality that does not or would not meet the
applicable national standard:
Pollutant | Annual | Averaging time (hours) | |||
24 | 8 | 3 | 1 | ||
SO2 | 1.0µg/m3 | 5 µg/m3 | 25 µg/m3 | ||
PM10 | 1.0µg/m3 | 5 µg/m3 | |||
PM2.5 | 0.3µg/m3 | 1.2 µg/m3 | |||
NO2 | 1.0µg/m3 | ||||
CO | 0.5 mg/m3 | 2 mg/m3 |
(3) A proposed
major source or major modification subject to this rule may reduce the impact
of its emissions upon air quality by obtaining sufficient emission reductions
to, at a minimum, compensate for its adverse ambient impact where the major
source or major modification would otherwise cause or contribute to a violation
of any national ambient air quality standard. In the absence of such emission
reductions, the proposed construction permit application shall be
denied.
(4) The requirements of this
rule shall not apply to a major stationary source or major modification with
respect to a particular pollutant if the owner or operator demonstrates that,
as to that pollutant, the source or modification is located in an area
designated as nonattainment pursuant to Section 107 of the
Act.
Notes
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