[Comment: For dates and availability of non-regulatory
government publications, publications of recognized organizations and
associations, federal rules, and federal statutory provisions referenced in
this rule, see paragraph (LLLLLL)
(AA) of rule
3745-31-01 of the Administrative
Code entitled, "referenced materials."]
(A) In meeting the emissions offset in rules
3745-31-21 to
3745-31-27 of the Administrative
Code, the following shall occur:
(1) The ratio
of total actual emissions reductions to the emissions increase shall be at
least 1.0 to 1.0 unless an alternative ratio is provided for the applicable
nonattainment area in paragraphs (C) and (D) of this rule.
(2) The emissions offsets obtained shall be
for the same regulated NSR pollutant except for interprecursor offsetting
permitted under paragraph (D) of this rule.
(B) Offsets may be obtained from areas that
have a higher nonattainment classification, provided the higher offset ratio is
utilized, than the nonattainment area in which the major stationary source is
to be located.
(C) Ozone
nonattainment area offset requirements for VOC and nitrogen oxides are as
follows:
(1) In areas that are not classified
as marginal, moderate, serious, severe or extreme areas, the offset ratio shall
be greater than 1.0 to 1.0.
(2)
Marginal areas, the minimum required offset ratio is 1.1 to 1.0.
(3) Moderate areas, the minimum required
offset ratio is 1.15 to 1.0.
(4) Serious areas, the minimum required
offset ratio is 1.2 to 1.0.
(5)
Severe areas, the minimum required offset ratio is 1.3 to 1.0.
(6) Extreme areas, the minimum required
offset ratio is 1.5 to 1.0.
(D) PM 2.5 nonattainment area interprecursor
offset ratios are as follows:
(1) Sulfur
dioxide and PM 2.5 offset ratios:
(a) When
using sulfur dioxide emission reductions for PM 2.5 emission increases, the
minimum required offset ratio is 40.0 to 1.0.
(b) When using PM 2.5 emission reductions for
sulfur dioxide emission increases, the minimum required offset ratio is 1.0 to
40.0.
(2) Nitrogen oxides
and PM 2.5 offset ratios:
(a) When using
nitrogen oxides emission reductions for PM 2.5 emission increases, the minimum
required offset ratio is 200.0 to 1.0.
(b) When using PM 2.5 emission reductions for
nitrogen oxide emission increases, the minimum required offset ratio is 1.0 to
200.0.
(E)
Nitrogen oxides waiver.
Paragraph (A) of this rule shall
does not apply
in areas designated nonattainment for ozone that have been granted a nitrogen
oxide waiver under Section 182(f) of the Clean Air Act.
Notes
Ohio Admin. Code 3745-31-26
Effective:
3/11/2023
Five Year Review (FYR) Dates:
11/30/2022 and
11/30/2027
Promulgated
Under: 119.03
Statutory
Authority: 3704.03(F)
Rule Amplifies:
3704.03(A),
3704.03(F)
Prior Effective Dates: 04/12/1996, 10/28/2004, 12/01/2006,
05/29/2014
