A.
General
requirement. It shall be the burden of any applicant to provide an
affirmative demonstration that its emissions, in conjunction with all other
sources, will not violate applicable ambient air quality standards, except that
sources in nonattainment areas or which significantly impact a nonattainment
area shall be required to demonstrate that the source's emissions are
consistent with Reasonable Further Progress provisions of the State
Implementation Plan. An applicant may use ambient air monitoring, modeling, or
other assessment techniques as approved by the Department. New Source Review
modeling required pursuant to subsection 7 (C and D) of this Chapter shall be
consistent with EPA regulations and guidelines or other requirements under the
CAA. The analyses shall include relevant emissions units at the source, as
determined by the Department, meteorological and topographical data necessary
to estimate such impacts, and shall consider the impact of fugitive emissions,
to the extent quantifiable, secondary emissions, and emissions from other
existing sources including increases in mobile and area source emissions
impacting the same area.
The level of analysis shall depend upon the size of the
source, the regulated air pollutants emitted, existing air quality, proximity
to Class I or nonattainment areas, or areas where increment has been
substantially consumed. (For the purposes of this subsection, the Class I area
shall include any conservation easements under the jurisdiction of an
appropriate Federal Land Manager as of August 7, 1977.) The air quality impact
analysis, in general, will not be required of the applicant for those regulated
pollutants that are not listed under "significant emissions increase" in 06-096
CMR 100. The analysis shall be conducted in accordance with the provisions of
subsection 7(E) of this Chapter, Prohibited Dispersion Techniques, 06-096 CMR
116 and Appendix W to 40 CFR Part 51 - Guideline on Air Quality Models.
Air quality modeling conducted as part of the licensing of a
new source or modification in the United States is substantially governed by
the Appendix W to 40 CFR Part 51 - Guideline on Air Quality Models. That
modeling guidance was first promulgated in 1978 and by law, must be routinely
updated by EPA. Thus, federal regulatory guidance on modeling and the list of
acceptable models do change. The Department recognizes that air dispersion
modeling guidance will be periodically updated, to reflect the latest federal
guidance. To maintain an orderly licensing process in the State, applicants
will be required to conform with those procedures and guidelines in effect at
the time of Department approval of a written modeling protocol that meets all
applicable requirements, and to complete modeling, as approved, and submit
results within six (6) months of the date of approval of the protocol. If the
protocol calls for collection of on-site meteorological data, then the starting
date for the on-site data collection must be no later than 6 months after
approval of the protocol and modeling results must be submitted within six (6)
months of obtaining acceptable on-site meteorological monitoring data. Requests
by the applicant to modify the modeling protocol will require conformance with
current applicable air dispersion modeling guidance.
(1)
Ambient Air Quality Monitoring
Requirements. Monitoring done by the owner or operator shall conform to
the requirements of 40 CFR Part 58, Appendix B and the Department's Quality
Assurance Plan (or other plan approved by the Department) during the operation
of monitoring stations. It is recommended that a written protocol shall be
developed by the owner or operator and the Department when a source is required
to conduct either pre-construction or post-construction monitoring. The
protocol shall, at a minimum, specify the monitoring sites, frequency of
sampling, data recovery, pollutants, and monitoring method(s).
(2)
Air Quality Impact Modeling
Requirements
(a) All estimates of
ambient concentrations required by an ambient or increment impact analysis
shall be based on the relevant air quality models, data bases, and other
requirements specified in the current Appendix W to 40 CFR Part 51 - Guideline
on Air Quality Models, and in accordance with subsection 7(E) of this Chapter
and 06-096 CMR 116. Fugitive emissions, to the extent quantifiable, shall be
considered.
(b) All input, output
and diagnostic files used in the final Class I and Class II ambient air quality
standards and increment compliance modeling analyses and Class I AQRV and
visibility modeling analyses shall be submitted to the Department on media
approved by the Department.
(c)
Where an air quality impact model specified in the Appendix W to 40 CFR Part 51
Guideline on Air Quality Models, is inappropriate, the model may be changed or
another model substituted; such change or substitution shall be subject to
public comment and the written approval of the Department and the Regional
Administrator of the U. S. Environmental Protection Agency or his designee.
Methods like those outlined in the Protocol for Determining the Best Performing
Model (EPA-454/R-92-025) and the Interim Procedures for Evaluating Air Quality
Models: Experience with Implementation (EPA-450/4-85-006) should be used to
determine the comparability of air quality models.
B.
Renewal of a Minor or
Major Source License
(1) A previously
submitted impact analysis shall be acceptable unless:
(a) It has been found to be deficient with
respect to requirements set forth in subsection 7(A) of this Chapter;
(b) The impact analysis fails to reflect
available information with respect to ambient air quality levels in the area,
which, based upon the Department's expertise, may reasonably be expected to be
significantly impacted by the source;
(c) The source emits a regulated pollutant
for which an ambient air quality standard has been adopted and whose impact was
not addressed in the original impact analysis;
(d) The renewal of the source is in
conjunction with a Minor or Major Modification which requires a modeling
analysis pursuant to subsection 7(C) or (D) of this Chapter; or
(e) There are changes in stack or building
configurations or other factors, which are determined to significantly alter
the dispersion characteristics of the source.
(2) Continuation of an ambient air monitoring
or meteorological monitoring program shall be made on a case-by-case basis at
the time of the renewal. It shall be the burden of the applicant to demonstrate
the adequacy of existing data, its relationship to past, present, and future
facility operating conditions, and the adequacy of other means to document
continuing compliance.
(3) An
existing source shall be exempt from an impact analysis with respect to a
regulated pollutant whose allowable emissions, after the application of control
technology requirements specified in Section 4 of this Chapter, do not exceed
the following, unless the source is located in or near a Class I area or an
area where the available air quality is limited, or other extenuating
circumstances exist:
(a) 50 tons per year
(tpy) for SO2;
(b) 250 tpy for CO;
(c) 25 tpy for
PM10;
(d) 15
tpy for PM2.5 direct emissions;
(e)
50 tpy for NOx (measured as NO2);
(f) 0.6 tpy for Lead (Pb); or
(g) 0.2 tpy of total Chromium.
C.
New Minor
Sources and Minor Modifications to Minor or Major Sources. This Section
applies to any new Minor source or Minor Modification of a Minor or Major
source.
(1) A new Minor source or an existing
Minor or Major source that previously was not required to submit an air quality
impact analysis for an air emissions license, but is undergoing a Minor
Modification shall submit an air quality impact analysis for those regulated
pollutants that the Minor or Major source emits or has the potential to emit at
levels equal to or greater than the limits in subsection 7(B)(3) of this
Chapter after the application of control technology requirements specified in
this Chapter. The level of the air quality impact analysis and air quality
monitoring shall be determined by the Department on a case-by-case basis
considering:
(a) Air quality data available
in or representative of the area;
(b) Good Engineering Practice stack height. A
cavity and wake region modeling analysis may be required by the Department if a
stack height is less than the formula Good Engineering Practice stack
height.
(c) Similarity with other
licensed sources in terms of size, emissions, and local topography;
(d) Location, including proximity to complex
terrain, Class I areas, integral vistas, nonattainment areas or areas where
increment has been substantially consumed; and
(e) The results of previous air quality
analyses.
(2) The level
of air quality analyses and air quality monitoring for any new Minor source,
any Minor Modification to an existing Minor or Major source which emits or has
the potential to emit regulated pollutants at a rate less than the emission
levels in subsection 7(B)(3) of this Chapter or any Minor Modification to an
existing Minor or Major source which emits or has the potential to emit
regulated pollutants at a rate greater than the emission levels in subsection
7(B)(3) of this Chapter and has an air quality analysis incorporated into its
existing air emission license shall be determined on a case-by-case basis
considering:
(a) Air quality data available
in or representative of the area;
(b) Good Engineering Practice stack height.
An analysis may be required, even in cases resulting in no increases in
emissions, if a stack height is less than Good EngineeringPractice or if there
are changes in stack or building configurations or other factors which are
determined to alter the dispersion characteristics of the Minor or Major
source.
(c) Similarity with other
licensed sources in terms of size, emissions, and local topography;
(d) Location, including proximity to, complex
terrain, Class I areas integral vistas, nonattainment areas or areas where
increment has been substantially consumed; and
(e) The results of previous air quality
analyses.
D.
New Major Sources and Major Modifications. This Section applies to
any new Major source or any Major Modification which emits or has the potential
to emit a significant emissions increase of any regulated pollutant.
(1)
Pre-construction monitoring
(a) For those pollutants for which there is
an ambient air quality standard, the analysis shall consist of continuous air
quality monitoring data gathered over a period of one year and shall represent
the year preceding the application. If the Department determines that a
complete and adequate analysis can be accomplished with monitoring data
gathered over a period shorter than one year, the application may be deemed
acceptable for processing based on the data gathered over that shorter period.
The period shall not be less than 4 months. The applicant must demonstrate that
such shorter period, or period other than the preceding year, is representative
of ambient concentrations under the seasonal conditions expected to record the
highest concentrations.
(b) For
those pollutants for which no ambient air quality standard exists, the analysis
shall contain such air quality monitoring data as the Department determines is
necessary and feasible in light of methods available to monitor such
pollutants.
(c) In areas where
meteorological monitoring data are not available or the Department determines
that the available data are inadequate or not representative, the new Major
source or Major Modification shall be required to collect preconstruction
meteorological data sufficient for air quality modeling, as defined in
Meteorological Monitoring Guidance for Regulatory Modeling Applications
(EPA-454/R-99-05). At least one year of data is required to be used in the
modeling to support the application.
(d) A new Major source or Major Modification
shall be exempt from the preconstruction monitoring requirements of this
subsection if the emissions increase of a pollutant would cause, in every area,
air quality impacts less than the following amounts:
(i) Carbon monoxide - 575
µg/m3, 8-hr. average;
(ii) Nitrogen dioxide - 14
µg/m3, annual average;
(iii) Sulfur dioxide - 13
µg/m3, 24-hr. average;
(iv) Ozone - No de minimis
air quality level is provided for ozone. Any Major sources having a net
emissions increase of 100 tpy or more of Volatile Organic Compounds (excluding
negligibly photochemically reactive VOC) shall conduct ambient air monitoring
except that when such Major source satisfies the condition of 40 CFR Part 51,
Appendix S, Section IV, postapproval monitoring data for ozone may be
substituted for preconstruction data;
(v) Lead - 0.1
µg/m3, 24-hr. average;
(vi) Mercury - 0.25
µg/m3, 24-hr. average;
(vii) Beryllium - 0.0005
µg/m3, 24-hr. average;
(viii) Fluorides - 0.25
µg/m3, 24-hr. average;
(ix) Vinyl chloride - 15
µg/m3, 24-hr. average;
(x) Total reduced sulfur - 10
µg/m3, 1-hr. average;
(xi) Hydrogen sulfide - 0.04
µg/m3, 1-hr. average;
(xii) Reduced sulfur compounds - 10
µg/m3 1-hr;
(xiii) Chromium - 0.02
µg/m3, 24-hr. average;
(xiv) PM2.5 - 4
µg/m3, 24-hr. average; and
(xv) PM10 - 10
µg/m3, 24-hr. average.
(2)
Ambient air quality
standards analysis. An ambient air quality standards analysis shall be
submitted which includes dispersion modeling for each pollutant for which there
is an ambient standard (except nonmethane hydrocarbons). The analysis also
shall include ambient air monitoring, meteorological and topographic data
necessary to estimate such impact, as well as an analysis of the impact of all
other sources in the area with actual emissions of 100 tpy or more of the same
pollutant. At a minimum, this analysis shall include all such sources that emit
more than 100 tpy of a given regulated pollutant located within the lesser of
10 km or the area, which, based upon the Department's expertise, may reasonably
be expected to be significantly impacted by the new Major source or Major
Modification. Conservative regional background concentrations for sources not
explicitly included in the modeling analysis are available from the Department.
If more refined background concentrations are necessary, the impact of sources
not explicitly included in the modeling analysis shall be obtained through an
analysis of ambient air quality data as outlined in the Department's guidelines
for determination of background concentrations.
(3)
Ambient increment analysis.
An increment analysis shall be submitted for each pollutant for which there is
an ambient increment standard. The analysis shall include meteorological and
topographical data necessary to estimate such impacts, as well as an analysis
of the air quality impacts and nature and extent of any or all general,
commercial, residential, industrial and other growth, including increases in
mobile source and area source emissions which has occurred since the baseline
date, and therefore have consumed increment in the area where the new Major
source or Major Modification will significantly impact. The analysis shall
include emissions not included in baseline year emissions, even though an
analysis may not have been previously required for those emissions. The
Department will provide emissions data from other sources to the applicant for
inclusion in the increment analysis. This analysis shall be conducted in
accordance with the modeling provisions of this subsection.
(4)
Additional impact analysis.
The proposed new Major source or Major Modification shall provide an additional
impact analysis of:
(a) The impairment to
visibility, soils and vegetation that would occur as a result of the new Major
source or Major Modification and general, commercial, residential, industrial
and other growth associated with the new Major source or Major Modification,
except that an analysis of the impact on vegetation having no significant
commercial or recreational value is not required;
(b) The air quality impact projected for the
area as a result of general commercial, residential, industrial and other
growth associated with the facility or modification; and
(c) The impact, including visibility
impairment, on any Class I area or integral vista (see 06-096 CMR
114(1)(C)(1)). This includes impacts of AQRVs, plume blight (for regions within
a Class I area that are affected by plumes or layers that are viewed against a
background (generally within 50 kilometers of the source)) and regional haze
(for regions of a Class I area where visibility impairment from the source
would cause a general alteration of the appearance of the scene (generally 50
kilometers or more away from the source or from the interaction of the
emissions from multiple sources)) impacts that the Federal Land Manager and the
Department agree should be assessed. (Consultation with the appropriate Federal
Land Manager (potentially affected federal lands are listed in 06-096 CMR 114)
and the Department on these requirements and how to perform these analyses
should begin prior to submittal of the initial modeling protocol.)
(5)
Post-construction
monitoring. The owner or operator, shall after construction of the new
Major source or Major Modification, conduct such ambient monitoring or
meteorological monitoring as the Department determines is necessary to
determine the effect emissions from the new Major source or Major Modification
may have, or are having, on air quality in any area.
A Major source or Major Modification shall be exempt from
the requirements of this subsection if its emissions do not significantly
impact a Class I area or an area where the increment is known to be violated or
substantially consumed, and
(a) The
allowable emissions increase will be temporary, not to exceed 2 years;
and
(b) Any licensed portable
source shall not increase, nor exceed, the allowable emissions and reasonable
notice of not less than 10 working days prior to the relocation shall be given
to the Department concerning its proposed location and probable duration of
operation at the new location.
E.
Modeling/data collection protocol.
Any air quality dispersion modeling or data collection program shall be
developed consistent with the following requirements:
(1)
Guidance. All air quality
dispersion modeling and meteorological data collection shall be conducted
consistent with Section 7 of this Chapter and Appendix W to 40 CFR Part 51 -
Guideline on Air Quality Models.
NOTE: For major sources and major modifications, the
applicant should consult with the Department and Federal Land Managers
(potentially affected federal lands are listed in 06-096 CMR 114) if Class I
analyses are required, prior to submitting a modeling/data collection protocol.
The applicant is responsible for obtaining the training necessary to perform
the required air dispersion modeling and meteorological data collection.
(2)
Variance from
guidance. Upon an applicant's written request, the Department may grant
a variance from any of the requirements set forth in Section 7 of this Chapter
and Appendix W to 40 CFR Part 51 - Guideline on Air Quality Models, when the
Department finds that the alternative proposed by the applicant will not
significantly affect the accuracy of the modeling, and/or when data collection
results or compliance with the requirements specified in Section 7 of this
Chapter and Appendix W to 40 CFR Part 51 - Guideline on Air Quality Models is
technically infeasible or economically unreasonable for the applicant. For any
minor source subject to PSD review, the variance shall be subject to EPA
review, written approval, and shall be subject to notice and opportunity for
public comment pursuant to
40 CFR Parts
51.160(f)(2) and
51.166(1)(2).
(3)
Significant impact modeling
protocol for SO 2, NO 2, CO,
PM2.5 and PM 10. Prior to undertaking significant
impact modeling for SO2, NO2, CO,
PM2.5 and PM10, the applicant shall provide in writing
to the Department, a description of the following factors that the applicant
proposes to use in the significant impact modeling demonstration (see Appendix
W to 40 CFR Part 51 - Guideline on Air Quality Models for more specific
guidance):
(a) Operating scenarios, emission
units and emission rates in English and metric units;
(b) Regulated air pollutants;
(c) Model(s) and methodologies;
(d) Origin and period of meteorological data,
including location of collection site relative to facility, meteorological
parameters, instrument height, recovery rates, substitution techniques and
QA/QC procedures;
(e) Receptor grid
(listing of coordinates and elevations, topographic maps covering the receptor
grid area map of receptors). A listing of all Digital Elevation Model (DEM)
quadrangles used, and method(s) used to convert DEM data to the proposed
receptor grid shall also be included. If DEM data is being used to create a
rectangular receptor grid, then the elevation of each receptor point shall be
the highest elevation within the grid cell. The grid cell is defined as an area
enclosed by boundaries located half way to the nearest receptor in each
direction;
(f) Any special (e.g.,
fenceline, air intake or flagpole) receptors;
(g) Identity of emission units and emissions
which are included in baseline;
(h)
A properly scaled plot plan of the proposed facility with clearly marked true
north indicator, building heights and an accurate scale ruler. Also, show the
location of the source on a map or aerial photograph of the area; and
NOTE: An original plot plan is preferred, but if a photocopy
is submitted, care should be taken to make sure that the scale is not changed
on any area of the plot.
(i) Building dimension and Good Engineering
Practice (GEP) analysis techniques. For each stack, all buildings that are
large enough and close enough to influence the stack should be considered in
the GEP analysis.
As expeditiously as possible and within thirty (30) calendar
days of receipt of this information, the Department shall notify the applicant
in writing that such information is complete and acceptable for modeling or
notify the applicant in writing of the reason(s) why the information is not
complete. If the information is not complete, the Department shall clearly
identify the changes or additional information that must be submitted to
complete the protocol requirements.
(4)
Submittal of significant impact
modeling
(a) Prior to undertaking the
final air quality dispersion modeling demonstration, the applicant shall submit
the following for review:
(i) Significant
impact modeling results (If all modeled impacts of any regulated pollutant are
below the significant impact levels for all averaging periods, then no further
analysis is necessary for that pollutant);
(ii) Emissions data for regulated pollutants
not in the significant impact modeling protocol;
(iii) A preliminary analysis of nearby
sources that will not be included in the background concentration analysis;
NOTE: The Department is responsible for the final decision of
off-site sources to be modeled. The Department will provide the applicant with
a list of any additional sources that may have to be included in the final
modeling analysis and the requisite model input data for these sources. This
list will contain all data required for model input including source
location(s), emission rates, stack parameters, and necessary building
dimensions for the applicant to determine direction-specific building
parameters.
(iv)
Background concentration data. Conservative background values are
available from the Department for all areas of the state. Should the applicant
choose not to use the conservative background values supplied by the
Department, the applicant shall be responsible for determining background
values based on data normally supplied by and in consultation with the
Department. For sources needing more refined background values, general
guidance on determining background determinations based on monitoring data is
provided in the most recent version of the Department's Guideline Document For
Background Air Quality Determinations. Particular care must be taken when
determining background values so that they do not implicitly include any
impacts of the source(s) being modeled in order to avoid double counting;
and
(v)
Processed
meteorological data base (if required by the Department). The use of
five (5) consecutive years of off-site National Weather Service (NWS)
meteorological data (or other data equivalent or better in accuracy and detail
to the NWS data) or at least 1 year of site specific data is the minimum
requirement for modeling applications. If more than one (1) year (and up to
five (5) years) of acceptable data is available, it shall be used in the air
quality analysis. If there is a gap in data from a catastrophic incident or a
persistent but subtle problem that evades detection, a two (2), three (3), four
(4) or five (5) year on-site meteorological database acceptable for modeling
purposes need not be compiled from two (2), three (3), four (4) or five (5)
consecutive years or twenty-four (24), thirty-six (36), forty-eight (48) or
sixty (60) consecutive months of data. If this is the case, then the applicant
shall write to the Department requesting an exemption from the consecutive two
(2), three (3), four (4) or five (5) year database requirement. If data
requirements, source configurations or characteristics of the surrounding area
change, the database may need to be updated after consultation with the
Department. However, a requirement to collect a new database will neither
preclude the applicant's ability to use the existing database in the interim
data collection period nor require the applicant to redo any previously
submitted analyses that used the original database.
(b) Within thirty (30) calendar days of
receipt of this information, the Department shall notify the applicant of the
following in writing:
(i) The submitted
information is complete and acceptable for modeling or the reason(s) why the
information is not complete. If the information is not complete, the Department
shall clearly identify the changes or additional information that must be
submitted to complete the protocol requirements; and
(ii) For each regulated pollutant for which
there are significant impacts, the Department shall specify which operating
scenarios and other nearby sources, if any, needs to be further modeled.
If the applicant requests in writing, information in the
possession of the Department that is required for modeling (for example,
emissions which are included in baseline emissions, background data or other
emissions data from nearby sources), the Department shall attempt to provide
such information to the applicant within thirty (30) calendar days.
(5)
Air quality dispersion modeling protocol. If impacts from
SO2, NO2, CO, PM2.5 and
PM10 are above significance or if there are other
regulated pollutants to be modeled, then the applicant must provide in writing
to the Department, a description of the following factors (if different from
previously submitted data) that the applicant proposes to use in the air
quality dispersion modeling (see Appendix W to 40 CFR Part 51 - Guideline on
Air Quality Models for more specific guidance):
(a) Operating scenarios, emission units and
emissions in English and metric units (including other nearby sources, if
necessary);
(b) Regulated air
pollutants;
(c) Model(s) and
methodologies;
(d) Origin and
period of meteorological data, including location of collection site relative
to facility, meteorological parameters, instrument height, recovery rates,
substitution techniques and QA/QC procedures;
(e) Receptor grid (listing of coordinates and
elevations, topographic maps covering the receptor grid area, map of receptors
and if applicable, a listing of all Digital Elevation Model (DEM) quadrangles
used and method(s) used to convert DEM data to the proposed receptor grid). If
DEM data is being used to create a rectangular grid, then the elevation of each
receptor shall be the highest within the grid cell. The grid cell is defined as
an area enclosed by boundaries located half way to the nearest receptor in each
direction;
(f) Any special (e.g.,
fenceline, air intake or flagpole) receptors;
(g) Identity of emissions which are included
in baseline emissions;
(h) A
properly scaled plot plan of the proposed facility with clearly marked true
north indicator, building heights and an accurate scale ruler. Also, show the
location of the source on a map of the area;
NOTE: An original plot plan is preferred but if a photocopy
is submitted care should be taken to make sure that the scale is not changed on
any area of the plot.
(i)
Building dimension and Good Engineering Practice (GEP) analysis techniques. For
each stack, all buildings that are large enough and close enough to influence
the stack shall be considered in the GEP analysis using the most recent version
of any EPA-approved Building Profile Input Program (BPIP) software package. The
applicant shall submit all input and output files on media approved by the
Department. All tiers of a building will be input as tiers of that building,
not as separate buildings; and
(j)
Background concentration data.
Within thirty (30) calendar days of receipt of this
information, the Department shall notify the applicant in writing that such
information is complete and acceptable for modeling or notify the applicant in
writing of the reason(s) why the information is not complete. If the
information is not complete, the Department shall clearly identify the changes
or additional information that must be submitted to complete the protocol
requirements.
When all submitted information is considered complete and
acceptable for modeling, the applicant shall perform air quality dispersion
modeling and submit for review the air quality dispersion modeling analysis as
part of the final application submittal.
(6)
Presentation of final
results
Once compliance with ambient air quality standards, ambient
increments and other limitations has been demonstrated through modeling, the
applicant shall prepare a written report documenting the source being modeled,
the modeling effort, and a compliance demonstration. The following outline
indicates the information required in the written report and information
required to be submitted on media approved by the Department.
(a) Introduction (briefly give an overview of
the project, the analyses conducted, and the results);
(b) Site and surroundings (describe the
topography, demography, air quality control region and compliance status
(attainment/nonattainment); include a topographic map section showing the site
and a properly scaled plot plan of the proposed facility; include rural/urban
classification and simple/complex terrain determination), topography and
land-use need to be described in sufficient detail to specify roughness length
if roughness length is a required input for the modeling system used in the
analysis;
(c) Source description
(provide an overview of the source, describe the process(es)
involved);
(d) Description of each
emission unit at the source (describe the equipment/operations, emission
controls, emission limits; list emissions and stack parameters for each
emission unit in English and metric units);
(e) Screening modeling (describe the
screening analyses performed):
(i) Modeling
approach/model(s) used;
(ii) Model
version used;
(iii) Model switch
selections;
(iv) Source data
(affected source and other nearby sources);
(v) Meteorological data; and Receptor data;
and
(vii) Screening
results
(f) Final
compliance modeling analysis (describe in detail modeling performed and
results):
(i) Modeling approach/model(s)
used;
(ii) Model version
used;
(iii) Model switch
selections;
(iv) Source data
(affected source and other nearby sources);
(v)
Meteorological data base.
The meteorological data base shall be submitted on media approved by the
Department if the applicant processed the meteorological data base;
(vi)
Receptor data. A map of the
receptor grid shall be submitted. (If applicable, all DEM data used to create
the receptor grid shall be submitted on media approved by the Department);
and
(vii)
Modeling
results. All input files needed to duplicate the final compliance model
runs and all final compliance model output and diagnostic files shall be
submitted on media approved by the Department.
(g)
Compliance demonstration
(describe how the predicted concentrations comply with all applicable ambient
air quality standards and ambient increments):
(i) Background determination (include table
of values);
(ii) Compliance with
ambient air quality standards; and
(iii) Compliance with Class II Prevention of
Significant Deterioration (PSD) increments (if applicable).
(h) Class I area impact assessment
(if required), (describe any analyses made for federal Class I areas):
(i) Basis for assessment;
(ii) Modeling approach/model(s)
used;
(iii) Model version
used;
(iv) Model switch
selections;
(v) Class I areas
affected;
(vi) Emissions and
conditions of operating scenarios;
(vii)Meteorological data;
(viii)Receptor grid;
(ix) Computational grid;
(x) Air quality impacts (ambient air quality
standards and ambient increments);
(xi) Visibility (plume blight assessment (for
regions within a Class I area that are affected by plumes or layers that are
viewed against a background (generally within 50 kilometers of the source)) and
regional haze assessment (for regions of a Class I area where visibility
impairment from the source would cause a general alteration of the appearance
of the scene (generally 50 kilometers or more away from the source or from the
interaction of the emissions from multiple sources)) and other assessments that
the Federal Land Manager and the Department agree should be assessed;
and
(xii)All input files needed to
duplicate the final Class I analysis model runs and all final Class I analysis
model output and diagnostic files shall be submitted on media approved by the
Department.
NOTE: The Department recommends that any applicant likely to
be required to conduct and submit an air quality dispersion modeling analysis
meet once with the Department staff prior to submitting the information
specified in subsection 7(E)(5) of this Chapter. A failure by the Department to
notify or provide information to the applicant as specified in this subsection
does not constitute an approval of the proposed protocol and/or
modeling.
NOTE: If a source of NOx is subject to both the Prevention of
Significant Deterioration (PSD) and New Source Review (NSR) thresholds, the
source shall comply with the nonattainment area NSR provisions for ozone as
well as modeling requirements for the NO2 National
Ambient Air Quality Standard, NO2 increment, and Class I
areas analyses, etc.
