N.Y. Comp. Codes R. & Regs. Tit. 6 § 231-6.6 - Emission offset requirements
(a) 'Emission offset applicability'. For a
NSR major modification, the project emission potential must be
offset.
(b) 'Offset ratio'.
(1) An emission offset of VOC or
NOx must exceed the corresponding project emission
potential (subsequent to application of LAER), as appropriate, by the
applicable offset ratio specified in Subpart 231-13 of this Part. A greater
offset ratio may be required, on a case by case basis, to provide an acceptable
contribution demonstration as set forth in this section.
(2) An emission offset of PM-10 must at least
equal (offset ratio of one to one or greater) the corresponding project
emission potential (subsequent to application of LAER), as appropriate, by the
applicable offset ratio specified in Subpart 231-13 of this Part. A greater
offset ratio may be required to provide a net air quality benefit as set forth
in this section.
(3) An emission
offset of PM-2.5 (including applicable precursors) must at least equal (offset
ratio of one to one or greater) the corresponding facility potential to emit or
project emission potential of the same pollutant (subsequent to application of
LAER), as appropriate, by the applicable offset ratio specified in Subpart
231-13 of this Part. A greater offset ratio may be required to provide a net
air quality benefit as set forth in this section.
(c) 'Use of an ERC as an emission offset'. An
ERC must meet the following requirements to be used as an emission offset:
(1) for NOx, PM-10,
and VOC emissions, ERCs must have physically occurred on or after November 15,
1990 but need not be contemporaneo us;
(2) for PM-2.5 (including its precursors
SO2 a n d N Ox), ERCs must have
physically occurred on or after April 5, 2005 but need not be
contemporaneous;
(3) an ERC, or
portion thereof, must be included as a condition in the permit f or the
proposed NSR major modification for which the reduction is
used.
(d) 'Net air
quality benefit and emission offset location f or PM-10, or PM-2.5 (including
applicable precursors)'. An emission offset of PM-10, or PM-2.5 (including
applicable precursors) must meet the following requirements:
(1) Contribution demonstration. An emission
offset may be obtained from the same nonattainment area in which a proposed NSR
major modification is to be located. An emission offset may also be obtained
from other nonattainment areas of equal or higher classification if emissions
from such other areas contribute to a violation of the NAAQS for PM-10 or
PM-2.5 in the nonattainment area where the proposed NSR major modification is
to be located. These other areas must be determined in accordance with
department approved modeling procedures.
(2) Net air quality benefit demonstration. As
part of a permit application, the applicant must submit an air quality impact
evaluation for PM-10 and PM-2.5, as applicable, in accordance with department
approved modeling procedures. The ambient air quality impact analysis must
demonstrate that:
(i) the net impact of the
proposed emissions increase and the emission offset provides for a net benefit,
on balance, in the area affected by the proposed NSR major modification;
and
(ii) for PM-10 and PM-2.5, the
net impact in no case exceeds an applicable significant impact level set forth
in section
231-12.6
of this Part.
(3)
Interstate offsets. An emission offset of PM-10, or PM-2.5 (including
applicable precursors), may be obtained from areas of equal or higher
classification located in another state, in accordance with department approved
modeling procedures, provided that an interstate reciprocal trading agreement
is in place and the requirements of paragraphs (1) and (2) of this subdivision
are met.
(e) 'Ozone
nonattainment and emission offset location'. Department approved modeling
procedures must be used by an applicant to find default acceptable VOC or
NOx offset source locations within New York State or to
perform a case specific contribution demonstration. An emission offset of VOC
or NOx is subject to the following:
(1) Proposed NSR major modification located
in an ozone nonattainment area.
(i)
Intrastate offset sources. An emission offset of VOC or
NOx be obtained from:
('a') the same ozone nonattainment area;
or
('b') other ozone nonattainment
areas of equal or higher classification, if emissions from such other areas
contribute to a violation of the NAAQS for ozone in the nonattainment area
where the proposed NSR major modification is to be located.
(ii) Interstate offset sources. An emission
offset may be obtained from ozone nonattainment areas of equal or higher
classification in another state, if emissions from such other areas contribute
to a violation of the NAAQS for ozone in the nonattainment area where the
proposed NSR major modification is to be located and an interstate reciprocal
trading agreement is in place. Department approved modeling procedures may be
used by an applicant to perform a case specific contribution
demonstration.
(2)
Proposed NSR major modification located in an attainment area of the state
within the ozone transport region. An emission offset of VOC or
NOx may be obtained from any location within the ozone
transport region in New York State. Such an offset may also be obtained from
another state in the ozone transport region, provided that an interstate
reciprocal trading agreement is in place.
Notes
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