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enplanements Additional changes to this figure include footnotes and NAAQS
Assessment area of the flowchart.
In addition to Figure 1, when preparing an analysis or scope of work, the project reviewers check list
provided in Appendix B should be considered. The check list covers the various components of
airport-related air quality impact analyses prepared under NEPA, Genera Conformity and/or Indirect
Source Review requirements.
Project Definition
Describes "Build" vs. "No-Build" alternatives approach.
No changes.
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AIR QUALITY PROCEDURES FOR CIVILIAN AIRPORTS & AIR FORCE BASES
(THE "AIR QUALITY HANDBOOK")
ADDENDUM (Continued)
2.1.2 (p. 11)
i i i ion
l st th
,
)
nd para., 2nd
explanation:
and
year(s).
to a NAAQS nd
explanation:
2.1.3 (p. 12)
l
Emission Inventory
Defines the concept and provides basic information on the individual elements (i.e. pollutants, analysis
years, conditions).
For a discuss on of the s x EPA criteria air pollutants and their precursors assoc ated with emiss
inventorying, the reader should consult Appendix C: Key Pollutants of the Handbook.
For additiona information on aircraft PM-10 and PM-2.5 emissions (1 para., 4 sentence), see the
following FAA publication:
Status Report on Proposed Methodology to Characterize Jet/Gas Turbine Engine Particulate
Matter Emissions - Progress Report prepared for the FAA Office of Environment & Energy,
prepared by R. Wayson, G. Fleming and B. Kim, Volpe National Transportation Systems Center,
May 2003. (Reference 104
The reference to a conformity assessment (2 sentence) is amended to the following
For a conformity assessment, only the “build” and “no-build” emissions of the “preferred alternative”
are analyzed (including construction emissions, which are the projected temporary emissions
resulting from project construction).
In addition, the years for which an emission inventory should be computed under General Conformity
needs clarification. For No-Build and proposed Build alternatives, the analyst should compute an
inventory of the total project emissions for: (a) the year of maximum emissions caused by the action,
(b) the attainment year or furthest year for the maintenance plan, (c) the SIP emissions budget
The reference assessment (2 para., last sentence) is amended to the following
Conversely, for a NAAQS NEPA assessment, emissions must be estimated for each reasonable
“build” and “no-build” alternative.
Indirect Source Review
Identifies and discusses the concept and applicability of this state-specific requirement.
The list of states that have Indirect Source Review (ISR) (also known as Transportation Facility
Permits) changes over time. Therefore, these requirements shou d be verified on a case-by-case, or
state-by-state, basis by contacting the appropriate agencies.
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AIR QUALITY PROCEDURES FOR CIVILIAN AIRPORTS & AIR FORCE BASES
(THE "AIR QUALITY HANDBOOK")
ADDENDUM (Continued)
2.1.4 (
i
i
ia
i , FAA Community &
4 i
j
)
This on the of
Conform list.
st para., 1st
3
i are
i
i
Conformity p. 12)
Introduces the rule, differentiates between general and transportation conform ty, briefly discusses
important concepts (i.e. non-attainment / maintenance designations, project-related emissions,
presumed to conform, regionally significant).
For updated information and guidance on General and Transportation Conformity see the following
publications:
40 CFR Parts 51 and 93, Determining Conform ty of General Federal Actions to State or
Federal Implementation Plans, Final Rule, U.S. EPA, November 30, 1993.
This final document contains background material, exemptions to the rule, application criter
(including the de-minimis” application thresholds) and other definitive information pertaining
the General Conformity requirements.
General Conform ty Guidance for Airports – Questions & Answers
Environmental Needs Division and the U.S. EPA OAQPS, Air Quality Strategies & Standards
Division (September 25, 2002). (Reference 101)
This publication, prepared by the U.S. EPA and the FAA, provides interpretative information in
a “question-and-answer” format to help facilitate a better understanding of the General
Conformity Rule and its application to airport- and airway-related projects or actions.
0 CFR Part 93, Subpart A, Conform ty to State or Federal Implementation Plans of
Transportation Plans, Programs and Pro ects Developed, Funded or Approved Under Title 23
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