Federal Presumed To Conform Actions Under General Conformity, 41565-41580 [07-3695]
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Federal Register / Vol. 72, No. 145 / Monday, July 30, 2007 / Notices
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thereunder,2 a proposed rule change to
amend: (a) Rule 625, Training; (b)
Equity Floor Procedure Advices and
Order & Decorum Regulations, F–30
Training; and (c) Options Floor
Procedure Advices and Order &
Decorum Regulations, F–30 Options
Trading Floor Training, to clarify and
expand the Exchange’s training
requirements. Specifically, the proposed
rule change expanded the category of
individuals who are required to attend
the mandatory training sessions and the
training topics covered. Further, the
Exchange set forth mandatory training
requirements, which would take place
on at least a semi-annual basis, for floor
members. The Exchange also proposed
changes to the language in Rule 970,
Floor Procedure Advices: Violations,
Penalties and Procedures, to delete the
reference to the now-obsolete Market
Surveillance Department and to provide
that any authorized official of the
Exchange may sign a citation for a floor
procedure advice violation. The
proposal was published for comment in
the Federal Register on June 19, 2007.3
The Commission received no comments
on the proposal. This order approves the
proposed rule change.
After careful review of the proposal,
the Commission finds that the proposed
rule change is consistent with the
requirements of the Act and the rules
and regulations thereunder applicable to
a national securities exchange.4 In
particular, the Commission finds that
the proposal is consistent with section
6(b)(5) of the Act,5 which requires,
among other things that the rules of an
exchange be designed to prevent
fraudulent and manipulative acts and
practices, to promote just and equitable
principles of trade, to remove
impediments to and perfect the
mechanism of a free and open market
and a national market system, and, in
general, to protect investors and the
public interest.
Expanding the Exchange’s current
mandatory training program should
provide a means for keeping members
and persons employed by or associated
with such members or member
organizations, and Participant
Authorized Users, informed of and
educated about, among other things,
current rules and regulations and
trading-related Exchange systems,
which should enhance member
2 17
CFR 240.19b–4.
3 See Securities Exchange Act Release No. 55729
(June 12, 2007), 72 FR 33797.
4 In approving this proposed rule change, the
Commission has considered the proposed rule’s
impact on efficiency, competition, and capital
formation. See 15 U.S.C. 78c(f).
5 15 U.S.C. 78f(b)(5).
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compliance with the federal securities
law and Exchange rules. Additionally,
updating the language in Exchange Rule
970 should promote efficiency in
connection with the issuance of
citations.
It is therefore ordered, pursuant to
section 19(b)(2) of the Act,6 that the
proposed rule change (SR–Phlx–2007–
16) be, and hereby is, approved.
For the Commission, by the Division of
Market Regulation, pursuant to delegated
authority.7
Florence E. Harmon,
Deputy Secretary.
[FR Doc. E7–14606 Filed 7–27–07; 8:45 am]
BILLING CODE 8010–01–P
TENNESSEE VALLEY AUTHORITY
41565
4. Report of the Human Resources
Committee.
FOR FURTHER INFORMATION: Please call
TVA Media Relations at (865) 632–6000,
Knoxville, Tennessee. Information is
also available at TVA’s Washington
Office (202) 898–2999. People who plan
to attend the meeting and have special
needs should call (865) 632–6000.
Anyone who wishes to comment on any
of the agenda in writing may send their
comments to: TVA Board of Directors,
Board Agenda Comments, 400 West
Summit Hill Drive, Knoxville,
Tennessee 37902.
Dated: July 25, 2007.
Maureen H. Dunn,
General Counsel and Secretary.
[FR Doc. 07–3717 Filed 7–26–07; 12:44 pm]
BILLING CODE 8120–08–P
[Meeting No. 07–04]
Sunshine Act Meeting
DEPARTMENT OF TRANSPORTATION
Time and Date: 9 a.m. (EDT), August
1, 2007, TVA West Tower Auditorium,
400 West Summit Hill Drive, Knoxville,
Tennessee 37902.
Status: Open.
Federal Aviation
Administration (FAA), DOT.
ACTION: Final Notice.
Old Business
Approval of minutes of May 31, 2007,
Board Meeting.
New Business
1. President’s Report.
2. Report of the Finance, Strategy, and
Rates Committee.
A. Annual budget.
B. Customer Items.
i. Time-of-use power supply
arrangements with a directly-served
customer.
ii. Real time energy arrangements.
iii. Implementation of 5-Minute
Response program.
iv. Interconnection agreements with
the cities of Princeton and Paducah,
Kentucky.
v. Limited interruptible power/
Limited firm power.
C. PURPA determinations.
D. Financial trading program
modifications.
3. Report of the Operations,
Environment, and Safety
Committee.
A. Watts Bar Nuclear Plant Unit 2
construction and startup.
B. Authorization to purchase a
combined cycle generating facility.
C. Amended Board Practice on Fuel,
Power Purchases or Sales, and
Related Contract Approvals.
PO 00000
7 17
U.S.C. 78s(b)(2).
CFR 200.30–3(a)(12).
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Federal Presumed To Conform Actions
Under General Conformity
AGENCY:
Agenda
6 15
Federal Aviation Administration
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SUMMARY: The Clean Air Act (CAA)
section 176(c), 42 U.S.C. 7506(c) and
Amendments of 1990 1 require that all
Federal actions conform to an
applicable State Implementation Plan
(SIP). The U.S. Environmental
Protection Agency (EPA) has established
criteria and procedures for Federal
agencies to use in demonstrating
conformity with an applicable SIP that
can be found at 40 CFR 93.150 et seq.
(‘‘The Rule’’).
The Rule allows Federal agencies to
develop a list of actions that are
presumed to conform to a SIP 2 for the
criteria pollutants and their precursors
that are identified in 40 CFR
93.153(b)(1) and (b)(2) and in the
National Ambient Air Quality Standards
(NAAQS) under 40 CFR 50.4–50.12.3
The criteria pollutants of concern for
local airport air quality are ozone (O3)
and its two major precursors (volatile
organic compounds (VOC) and nitrogen
oxides (NOX)), carbon monoxide (CO),
nitrogen dioxide (NO2), sulfur dioxide
1 Clean Air Act Title I Air Pollution Prevention
and Control, Part D, Subpart 1, Section 176
Limitation on Certain Federal Assistance.
2 40 CFR Part 93, § 93.153(f).
3 NAAQS established by the EPA represent
maximum concentration standards for criteria
pollutants to protect human health (primary
standards) and to protect property and aesthetics
(secondary standards).
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(SO2) 4, and particulate matter
consisting of small particulates with a
diameter less than or equal to 2.5
micrometers (PM2.5) and larger
particulates with a diameter of up to 10
micrometers (PM10).5
According to the Rule 6, Federal
agencies must meet the criteria for
establishing activities that are presumed
to conform by either:
(1) Clearly demonstrating that the
total of direct and indirect emissions
from the type of activities that would be
presumed to conform would not:
(i) Cause or contribute to any new
violation of any standard in any area;
(ii) Interfere with provisions in the
applicable SIP for maintenance of any
standard;
(iii) Increase the frequency or severity
of any existing violation of any standard
in any area; or
(iv) Delay timely attainment of any
standard or any required interim
emission reductions or other milestones
in any area including emission levels
specified in the applicable SIP 7; or
(2) Providing documentation that
emissions from the types of actions that
would be presumed to conform are
below the applicable de minimis levels
established in 40 CFR § 93.153(b)(1) and
(b)(2).8 This documentation may be
based on similar actions that the agency
has taken over recent years.9 Besides
documenting the basis for presumed to
conform activities, Federal agencies
must fulfill procedural requirements
under the Rule relating to publication in
the Federal Register, notification to
Federal/State/local agencies,
opportunity for public comment, and
availability of responses to public
comments.10
In this Notice, the Federal Aviation
Administration (FAA) is identifying a
list of actions involving agency approval
and financial assistance for airport
projects that are presumed to conform.
The benefits of this list include the
elimination of unnecessary agency costs
associated with evaluating actions with
few if any emissions. As a result, the
agency will be able to streamline the
environmental process by applying
more of its resources to actions that
have the potential to reach regulated
emission levels or adversely impact air
quality.
Addressing the need for efficiency
and streamlining, the EPA states that the
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4 FAA
calculated SOX is considered equal to SO2
is a subset of PM10 with separate
standards for each.
6 40 CFR Part 93, § 93.153(g).
7 40 CFR Part 93, § 93.153(g)(1).
8 Title 40 CFR Part 93, § 93.153(g)(2).
9 Ibid.
10 Title 40 CFR Part 93, § 93.153(h).
5 PM
2.5
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provisions allowing Federal agencies to
establish categories of actions that are
presumed to conform are ‘‘intended to
assure that these Rules are not overly
burdensome and Federal agencies
would not spend undue time assessing
actions that have little or no impact on
air quality.’’ 11 Furthermore, the EPA
states that ‘‘Federal actions which are de
minimis should not be required by this
Rule to make an applicability analysis.
A different interpretation could result in
an extremely wasteful process which
generates vast numbers of useless
conformity statements.’’ 12
Consequently, the Rule allows
individual Federal agencies to present
categories of actions that have been
documented to be de minimis and,
therefore should be ‘‘presumed to
conform’’ to the Rule under 40 CFR
93.153(f).
This Notice contains a summary of
documentation and analysis which
demonstrates that actions described
below will not exceed the applicable de
minimis emission levels for
nonattainment and maintenance areas,
as specified under 40 CFR 93.153(b). In
relation to the agency’s demonstration
of presumed to conform actions, the
EPA has defined broad categories of
actions in 40 CFR 93.153(c)(2) that are
exempt from the Rule because the
actions result in no emissions increase
or an increase in emissions that is
clearly de minimis. In this Notice, the
FAA distinguishes various airportrelated actions that are exempt under
the Rule from those that are presumed
to conform.
Notification Process for Presumed To
Conform
The notification requirements in the
Rule are as follows: 13
(1) The Federal agency must identify
through publication in the Federal
Register its list of proposed activities
that are presumed to conform and the
basis for the presumptions;
(2) The Federal agency must notify
the appropriate EPA Regional Office(s),
State and local air quality agencies and,
where applicable, the agency designated
under section 174 of the Act and the
metropolitan planning organization
(MPO) and provide at least 30 days for
the public to comment on the list of
proposed activities presumed to
conform;
(3) The Federal agency must
document its response to all the
comments received and make the
comments, response, and final list of
PO 00000
11 58
FR 63228 (Nov. 30, 1993).
FR 63229 (Nov. 30, 1993).
13 40 CFR Part 93, § 93.153(h)(1–4).
12 58
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activities available to the public upon
request; and
(4) The Federal agency must publish
the list of such activities in the Federal
Register.
In meeting the requirements above,
the FAA issued the Draft Notice,
entitled Federal Presumed to Conform
Actions Under General Conformity, in
the Federal Register of Monday,
February 12, 2007 (Vol. 72, No. 28, pp.
6641–6656). All of the appropriate
organizations were notified and
encouraged to comment, including EPA
Regions, State and local air quality
agencies, and metropolitan planning
organizations.
A 45-day public comment period was
provided for the Draft Federal Notice,
allowing a few additional weeks for
comment beyond the minimum 30-day
notice period. Seven (7) letters were
submitted to the FAA. From these
letters, the FAA identified twenty-nine
(29) separate comments to which the
agency prepared individual written
responses. All of the letters, comments,
and responses are publicly available for
review on the FAA Office of Airports
Web site for environmental programs.
Based on comments received and
follow-up discussions with the EPA, the
FAA made appropriate revisions to the
Federal Register Notice. The FAA is
completing its notification requirements
by publishing the completed list of
presumed to conform actions in this
Final Federal Register Notice. The
public may obtain further program
information or review project
documentation by contacting the office
and person listed under ‘‘For Further
Information Contact.’’
FOR FURTHER INFORMATION CONTACT: Dr.
Jake A. Plante, Planning and
Environmental Division, Federal
Aviation Administration, 800
Independence Avenue, APP–400, SW.,
Room 616, Office of Airports,
Washington, DC 20591,
jake.plante@faa.gov, phone (202) 493–
4875, fax (202) 267–5257.
Table of Contents
The major sections of this document are as
follows:
I. Background
II. Existing Exemptions
III. Presumed To Conform Project
Descriptions and Justifications
IV. How To Apply Presumed To Conform
Actions
I. Background
Under the Rule (40 CFR 93.153(g)(h)),
the FAA and other agencies are entitled
to develop a list of proposed actions that
are presumed to conform. The process
of establishing presumed to conform
classifications is predicated on the
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concept of conformity. Conformity
assures that an activity that is presumed
to conform does not cause or contribute
to any new violation of the NAAQS or
interfere with provisions contained in
applicable SIPS.
The administration and enforcement
of conformity regulations are delegated
by the EPA to the individual States
through provisions in each SIP. A SIP is
the written plan submitted to the EPA
detailing each State’s strategy to control
air emissions to meet and maintain the
NAAQS in geographic areas that are
designated as nonattainment areas. The
EPA requires each State to devise such
a plan for each criteria pollutant causing
violations or the EPA will impose a
Federal implementation plan (‘‘FIP’’) for
the State. When a nonattainment area
achieves compliance with the NAAQS,
it becomes a maintenance area for at
least 10 years with ongoing State
responsibility to ensure continued
attainment.14
General Conformity
General conformity refers to the
process of demonstrating that a general
Federal action conforms to the
applicable SIP. A general Federal action
is defined more by what it is not, rather
than by what it is. A general Federal
action is any Federal action that is not
a Federal ‘‘transportation’’ action and
consequently not subject to the
conformity requirements established for
Federal highway or transit actions,
referred to as ‘‘transportation
conformity.’’ A Federal transportation
action is an action related to
transportation plans, programs, and
projects that are developed, funded, or
approved under Title 23 United States
Code (USC) or the Federal Transit Act
(FTA).15 Since FAA actions do not meet
the definition of a transportation action,
they are general actions by default and
thus subject to the General Conformity
Rule.
The FAA and other Federal agencies
subject to general conformity must make
a determination that the Federal action
conforms to the SIP’s purpose to meet
and maintain the NAAQS before the
action is taken. If the proposed actions
are not specifically exempt or classified
as presumed to conform, it is necessary
to conduct an emissions inventory as
part of the applicability analysis to
determine if emissions are likely to
equal or exceed the established
screening criteria emission rates known
as the de minimis thresholds. A general
conformity determination is required for
each pollutant identified as
14 CAA,
Section 175A, 42 U.S.C. 7505a.
15 49 U.S.C. 1601 et seq.
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nonattainment or maintenance when the
total of direct and indirect emissions
caused by a Federal action equals or
exceeds any of the applicable de
minimis thresholds.16
FAA Airport Development Actions
Subject to General Conformity
The FAA is responsible for deciding
whether its actions involving an airport
located in a nonattainment or
maintenance area require a general
conformity evaluation.17 FAA actions
that require a conformity evaluation
include unconditional approval of any
or all parts of an airport layout plan
(ALP), final Airport Improvement
Program (AIP) grant approvals, and
approvals for use of Passenger Facility
Charges (PFCs). Other FAA actions that
may require a conformity evaluation
include proposed actions for which an
environmental assessment (EA) or
environmental impact statement (EIS) is
prepared under the requirements of the
National Environmental Policy Act.
II. Existing Exemptions
For the FAA to provide the proper
context and baseline for identifying and
proposing a list of presumed to conform
Federal actions, it is important to
consider the extent to which FAA
airport-related actions and activities
may qualify for exemption from general
conformity requirements. The EPA has
defined broad categories of exempt
actions under 40 CFR 93.153(c)(2) that
result in no emissions increase or
increases in emissions that are clearly
de minimis. These actions are not
subject to further analysis for
applicability, conformity, or regional
significance under the Rule.
As part of this Federal Register
Notice, the FAA has interpreted how the
exemptions in the Rule apply to FAA
actions associated with airport facilities
and aviation planning. The following
discussion addresses the most relevant
examples of these exemptions regarding
FAA actions for airport development.
1. Rulemaking and Policy Development
[40 CFR 93.153(c)(2)(iii)]
The FAA develops rules and policies
to address issues of safety, aviation
noise abatement, and systematic
improvements to efficiency. This
includes issuance of airport policy and
planning documents for the National
CFR Part 93, § 93.153(b).
evaluation’’ refers to the overall
process of assessing whether an action/project is
subject to general conformity requirements, which
may include an applicability analysis needed to
make a conformity determination. See Question #1,
EPA and FAA General Conformity Guidance for
Airports: Questions and Answers, September 25,
2002.
PO 00000
16 40
17 ‘‘Conformity
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41567
Plan of Integrated Airport Systems
(NPIAS), the Airport Capital
Improvement Program (ACIP), and
Advisory Circulars on planning, design,
and development programs. These
documents provide administrative and
technical guidance to the airport
community and the public and are not
intended for direct implementation. The
actual process of rulemaking or policy
development is typically administrative
in nature and does not cause an increase
in air emissions.
2. Routine Maintenance and Repair
Activities [40 CFR 93.153(c)(2)(iv)]
In conformance with FAA standards
and regulations, the airport sponsor
must maintain airport facilities and the
airfield in a manner that ensures the
safe operation of the airport. These
activities constitute Federal actions
when Federal funding from the FAA is
involved. Airport maintenance, repair,
removal, replacement, and installation
work that matches the characteristics,
size, and function of a facility as it
existed before the replacement or repair
activity typically qualifies as routine
maintenance and repair for purposes of
general conformity. Such activity does
not increase the capacity of the airport
or change the operational environment
of the airport.
The FAA does not consider major
runway reconstruction to qualify as
exempt under the Rule if the
reconstruction results in a runway that
is hardened, lengthened, or widened to
support a larger class of aircraft.
Proposed funding for such a project
would require analysis of emission
levels to determine the applicability of
general conformity requirements.
Routine maintenance for existing
runways, taxiways, aprons, ramps,
fillets, and airport roadways includes
in-kind resurfacing,18 re-marking of
existing runways, taxiways, apron areas,
etc., and runway grooving and rubber
removal projects. Other areas of routine
replacement, maintenance, and repair
work that may be considered exempt
from the Rule include:
• Existing signage.
• Existing lighting systems.
• Existing pavement markings.
• Wind or landing direction
indicators.
• Existing airport security access
control.
• Existing buildings and structures.
• Existing heating, ventilation, and
air conditioning (HVAC) systems.
• Existing infrastructure such as
sanitary sewer or electrical systems.
18 Depending on numerous factors affecting
surface conditions, airports will generally resurface
asphalt runways every 7–10 years.
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• General landscaping, erosion
control, and grading.
3. Planning, Studies, and Provisions of
Technical Assistance [40 CFR
93.153(c)(2)(xii)]
Planning and information-related
actions do not represent
implementation of operational changes
at the airport and therefore do not result
in emission increases. Consequently,
actions such as those listed below may
be considered exempt from the Rule:
• FAA funding and acceptance of
Master Plans and Updates.
• FAA funding of System Planning
Studies.
• FAA acceptance of noise exposure
maps and approval of noise
compatibility programs pursuant to 49
U.S.C. 47501 et seq., as implemented by
14 CFR Part 150.
• FAA approval of noise and access
restrictions on operations by Stage 3
aircraft under 49 U.S.C. 47524, as
implemented by 14 CFR Part 161.
4. Transfers of Ownership, Interests, and
Titles in Land, Facilities, and Real and
Personal Properties, Regardless of the
Form or Method of the Transfer [40 CFR
93.153(c)(2)(xiv)]
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5. Actions (or Portions Thereof)
Associated With Transfers of Land,
Facilities, Title, and Real Properties
Through an Enforceable Contract or
Lease Agreement Where the Delivery of
the Deed Is Required To Occur Promptly
After a Specific, Reasonable Condition
Is Met, Such as Promptly After the Land
Is Certified as Meeting the Requirements
of Comprehensive Environmental
Response, Compensation and Liability
Act (CERCLA), and Where the Federal
Agency Does Not Retain Continuing
Authority To Control Emissions
Associated With the Lands, Facilities,
Title, or Real Properties [40 CFR
93.153(c)(2)(xix)]
Actions by the FAA to transfer or
acquire land or equipment that do not
increase the capacity of the airport or
change the operational environment
affecting air emissions. Such actions
include funding or approving transfers,
acquisitions, or releases by airport
sponsors,19 or preparing and executing
related contracts or written agreements.
Related actions that may be considered
exempt from the Rule are:
• Facilities and equipment purchases.
• Land acquisition and relocation
assistance.
19 Airport ‘‘sponsors’’ are planning agencies,
public agencies, or private airport owners/operators
that have the legal and financial ability to carry out
the program requirements for FAA financial
assistance.
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• Land releases for which there is no
reasonable expectation of a change in
land use.
• Avigation easement acquisition.
• Acquisition of an existing privately
owned airport involving only change of
ownership.
6. Alterations and Additions of Existing
Structures as Specifically Required by
New or Existing Applicable
Environmental Legislation or
Environmental Regulations (e.g., Hush
Houses for Aircraft Engines * * *) [40
CFR 93.153(d)(4)]
Actions that are initiated in response
to specific environmental laws and
regulations (e.g., energy efficiency, noise
abatement structures and equipment)
may be considered exempt from the
Rule. These actions include:
• Equipment purchases.
• Protective noise barriers.
• Required noise mitigation actions
including the installation and operation
of hush houses for aircraft and engine
maintenance.
7. Federal Actions Which Are Part of a
Continuing Response to an Emergency
or Disaster [40 CFR 93.153(d)(2) and (e)]
Actions in response to emergencies,
natural disasters, etc., that involve
overriding concerns for public health
and welfare, national security interests,
or foreign policy commitments may be
exempt from general conformity
requirements for six months and
possibly longer if justified in writing by
the agency.20
III. Presumed To Conform Project
Descriptions and Justifications
The FAA began the process of
developing and documenting presumed
to conform actions with a detailed
environmental survey of airport
projects. The survey was conducted by
all FAA regional offices, which
identified approved airport projects over
a recent two-year period that received a
categorical exclusion (CATEX) or
Finding of No Significant Impact
(FONSI).21 This information was
requested only for airports included in
areas designated as nonattainment or
maintenance by the EPA. Information
compiled from these surveys described
about 600 completed projects at over
100 airports.
The survey information was
processed by assigning each airport
20 Airports located in nonattainment or
maintenance areas with small regional emission
budgets may need to check whether a proposed
exempt action might be regionally significant under
40 CFR Part 93, § 93.153(i).
21 FAA Order 1050.1E, chapter 3 (CATEX) and
Chapter 4, § 406 (FONSI), pursuant to the National
Environmental Policy Act.
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planning and development project into
one of two categories: (1) Projects that
are exempt from the requirements of the
Rule as defined by 40 CFR 93.153(e); or
(2) projects that require an applicability
analysis before being defined as de
minimis (i.e., presumed to conform),
according to 40 CFR 93.153(c)(1).
Specific information on the application
of these two project categories is
presented in Section II and Section III
of this document, respectively.
In the analysis of the survey results,
any airport project that exceeded de
minimis levels even once was
considered ineligible for the presumed
to conform list. Follow-up
communications with airports and FAA
regional representatives helped to
clarify terminology and confirm the
reliability of the presumptions. In
addition, the FAA performed detailed
worst-case analyses where practicable in
areas where project size and
implementation could conceivably
result in the exceedance of de minimis
levels.
The airport project survey data and
other agency experience in
implementing similar actions taken over
recent years provide the fundamental
basis for all of the presumed to conform
classifications. The FAA conducted
additional quantitative analyses for
specific project areas, as practicable.
These analyses are summarized in
Section III, and include the following:
pavement markings; terminal upgrades;
commercial vehicle staging areas; nonrunway paving; heating, ventilation, and
air conditioning (HVAC) systems; and
low-emission technology and alternative
fuel vehicles.
Based on the survey of airport
projects, the additional evaluations, and
quantitative analyses, only those project
categories that were proven to be
reliably and consistently de minimis
were classified as presumed to conform.
In general, FAA presumed to conform
actions involve maintenance,
navigation, construction, safety, security
activities, and new technology and
vehicle systems that do not modify or
increase airport capacity or change the
operational environment of the airport
in such a way as to increase air
emissions above de minimis thresholds.
Presented below are the airport
project descriptions and justifications
for FAA actions that are presumed to
conform. There are fifteen project
categories, which are discussed in the
following order:
1. Pavement Markings.
2. Pavement Monitoring Systems.
3. Non-Runway Pavement Work.
4. Aircraft Gate Areas on Airside.
5. Lighting Systems.
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6. Terminal and Concourse Upgrades.
7. New HVAC Systems, Upgrades, and
Expansions.
8. Airport Security.
9. Airport Safety.
10. Airport Maintenance Facilities.
11. Airport Signage.
12. Commercial Vehicle Staging
Areas.
13. Low-Emission Technology and
Alternative Fuel Vehicles.
14. Air Traffic Control Activities and
Adopting Approach, Departure and
Enroute Procedures for Air Operations.
15. Routine Installation and Operation
of Aviation Navigation Aids.
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1. Pavement Markings
Airport sponsors apply paint on
paved surfaces, such as runways,
taxiways, apron areas, cargo areas, and
parking lots to ensure the safe operation
of aircraft during approach and landing
and to provide safe direction for surface
vehicles. Most pavement marking
projects are considered routine
maintenance activities, qualifying as
exempt from the Rule (see Section II,
number 2 of this Notice). These actions
are designed to restore and improve
painted surfaces that have deteriorated
due to time, use, and weather.
Federal actions that alter airport use
through new pavement markings are not
routine maintenance but are presumed
to conform if such actions do not
increase airport capacity or introduce a
larger class of aircraft at the airport. For
example, new runway markings for
improved flight procedures from visual
flight rules (VFR) to instrument flight
rules (IFR) are presumed to conform if
normal traffic flow is maintained.
Pollutant emissions due to the paint
application process are primarily
composed of VOC from the paint, and
NOX emitted from the trucks and
application compressors required to
prepare the surface and apply the paint.
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Emissions of both VOC and NOX are
considered precursors to the
development of ozone in the
atmosphere. Therefore, emissions from
the application of painted pavement
markings pertain most importantly to
ozone nonattainment and maintenance
areas.
A worst-case calculation of emissions
was performed based on equipment and
types of paint required to mark a
Category III 13,000-foot runway with an
instrument lighting system (ILS) to FAA
specifications. The calculation of
emissions included the removal of
existing markings using water pressure
through a compressor mounted on a
diesel truck, a pavement sweeper truck
to remove debris, the application of the
paint using an air compressor mounted
on a diesel truck, and a small hand
sprayer for detailed markings, such as
squared corners. A total of 2,492 gallons
of paint (a combination of white,
yellow, and black) were applied to the
representative runway at a rate of 115
square feet per gallon of paint. The
trucks transporting the paint and
compressors were assumed to be similar
to a single axle, Class 7 diesel pickup
truck.22 The sweeper was assumed to be
a regenerative diesel air power model,
using a chassis engine and an auxiliary
engine to power the brushes.
Manufacturers’ Material Safety Data
Sheets were referenced for the VOC
emissions factors for the three colors of
latex paint. Emissions factors for the
criteria and precursor pollutants were
obtained from the EPA Nonroad Engine
and Vehicle Emission Study-Report.23
22 The Gross Vehicle Weight Rating (GVWR)
system defines a Class 7 diesel truck as one that can
carry 26,001 to 33,000 pounds of weight on two
axles.
23 EPA Report 460/3–91–02, November 1991,
Nonroad Engine and Vehicle Emission Study—
Report.
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Load factors and horsepower ratings
were obtained from the EPA Nonroad
Engine and Vehicle Emission StudyReport and Median Life, Annual
Activity, and Load Factor Values for
Nonroad Engine Emissions Modeling.24
The maximum volume of paint that
could be applied without equaling or
exceeding the de minimis thresholds for
any nonattainment and maintenance
classification was calculated.25 For
instance, an airport located within an
extreme nonattainment area for ozone is
limited to net project emissions of 10
tons of VOC per year. This translates
into an annual application of 21,890
gallons of paint, which also causes 0.21
tons 26 of NOX emissions. For example,
this volume of paint would mark eight
Category III 13,000-foot ILS runways. A
volume of paint on the order of one
million gallons is required to cause
emissions of NOX to equal 10 tons per
year. Likewise, a volume of paint on the
order of five million to 176 million
gallons is required in order to be
sufficient to exceed the de minimis
thresholds for CO, SO2, or PM10.
Therefore, VOCs are the limiting
pollutant 27 for the application of paint
at airports and emissions of NOX, CO,
SO2, and PM10 are considerably less.
Table III–1 provides the gallon
application limits, which include the
use of construction equipment for
pavement markings in nonattainment
and maintenance areas.
BILLING CODE 4910–13–P
24 EPA Report NR–005A, December 9, 1997,
revised June 15, 1998, Median Life, Annual Activity,
and Load Factor Values for Nonroad Engine
Emissions Modeling.
25 Calculations of maximum paint volume
include consideration of construction equipment.
26 Short tons, where one ton equals 2,000 lbs.
27 The limiting pollutant is defined as the criteria
pollutant that first exceeds de minimis levels for a
given project.
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BILLING CODE 4910–13–C
2. Pavement Monitoring Systems
Airports have the option of installing
a pavement monitoring system to
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indicate when the durability and
strength of the pavement needs to be
reinforced. These systems are
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implemented for safety reasons to
ensure that an airport’s runway,
taxiway, and apron network are
sufficiently able to support the weight of
aircraft. Minor construction work is
required for the installation of the
monitoring system. Assuming the
installation requires the use of a pickup
truck, a utility truck, an excavator, an
asphalt paver, a compactor, and a small
generator, construction would have to
proceed continuously (eight hours per
day, 20 days per month) for more than
a year (1.1 years) in order to produce
emissions near the level of 10 tons of
NOX. For the remaining criteria
pollutants and precursors, construction
on the order of several years would be
required to approach the de minimis
thresholds. Pavement monitoring
systems are installed in less than a
week; therefore, project construction
emissions are well below de minimis
and presumed to conform.
3. Non-Runway Pavement Work
Airfield pavement must be
constructed to withstand the weight of
aircraft and to produce a firm, stable,
smooth, year-round, all-weather surface.
The pavement must be of such quality
and thickness that it will not fail under
the weight of aircraft and it must
possess sufficient inherent stability to
withstand, without damage, the abrasive
action of aircraft traffic and adverse
weather conditions.28 These pavement
specifications apply to non-runway
areas of the airfield where aircraft
operate, including taxiways, apron
areas, and gate areas. The specific
pavement requirements are satisfied by
applying rigid pavement consisting of
layers of crushed stone bound and
pressed into a smooth surface.
Most airfield construction projects
that are presumed to conform involve
areas of the airfield, generally referred to
as apron areas, that accommodate
aircraft for purposes of loading or
unloading passengers or cargo,
refueling, or aircraft parking. These
types of airfield projects do not include
projects intended to increase airport
capacity or those that are otherwise
defined as routine maintenance for
existing apron areas. Taxiway
construction projects are limited to
improvements of existing taxiways that
will not affect runway use, increase
capacity, enable new aircraft types, or
change existing airfield operations when
complete (e.g., new high speed exits
would represent such a change).
Construction projects in this category do
not include blasting or substantial ‘‘cut
28 FAA AC 150/5320–6D, September 7, 1995,
Airport Pavement Design and Evaluation.
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and fill’’ activity to level the terrain or
prepare the surface area. If an apron area
or taxiway project does not meet the
conditions as described above, a project
emissions inventory of direct and
indirect emissions is required to
determine the further applicability of
general conformity.
Pollutant emissions due to airfield
construction are solely from the use of
construction equipment and are
primarily comprised of NOX, a
precursor to ozone development, and
CO resulting from the trucks operated to
haul the large amounts of stone and
gravel that must be used to form the
support layers for the paving material.
The evaluation of emissions from
airfield paving was based on a
representative project in the FAA
Eastern Region. The project required
equipment and materials to construct
approximately 600,000 square feet of
airfield and concrete shoulder area with
an assumed surface design life of 20
years.29 The conservative calculation of
emissions included the preparation of
the site allowing for a four-inch
geotextile layer of subgrade soil, a fourinch frost protection layer of crushed
stone, a four-inch sub base layer of
finely crushed stone, an eight-inch base
layer of gravel mixed with a stabilizer
such as cement,30 and the application of
a six-inch layer of Portland cement
concrete.31 This type of construction
design allows for a total pavement
thickness of 26 inches; the minimum
total pavement thickness for the
accommodation of jet aircraft weighing
100,000 pounds or more is 20 inches.32
Also included in the construction
emissions inventory is the installation
of a drainage system.
Emissions factors for construction
equipment were obtained from the
EPA’s 1991 Nonroad Engine and
Vehicle Emission Study—Report.33 Load
factors and horsepower ratings for the
construction equipment were obtained
from the EPA’s 1991 Nonroad Engine
and Vehicle Emission Study—Report
and the EPA’s 1997 Median Life, Annual
29 As recommended under FAA AC 150/5320–16,
October 22, 1995, Airport Pavement Design for the
Boeing 777 Airplane.
30 Stabilized base layers as necessary for new
pavements designed to accommodate jet aircraft
weighting 100,000 pounds or more. FAA AC 150/
5320–6D, September 7, 1995, Airport Pavement
Design and Evaluation.
31 Portland cement is a hydraulic cement made by
heating a mixture of limestone and clay in a kiln
and pulverizing the resulting material.
32 FAA AC 150/5320–6D, September 7, 1995,
Airport Pavement Design and Evaluation.
33 EPA Report 460/3–91–02, November 1991,
Nonroad Engine and Vehicle Emission Study—
Report. Table 2–07 Emission Factors.
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Activity, and Load Factor Values for
Nonroad Engine Emissions Modeling.34
The maximum allowable square
footage of airfield construction was
calculated for each nonattainment and
maintenance category. The analysis
showed that NOX was the limiting
pollutant for airfield paving projects and
that emissions of VOC, CO, SO2, and
PM10 are considerably less in
comparison with NOX.
Table III–1 provides the area limits for
non-runway airfield construction in
nonattainment and maintenance areas.
For instance, an airport located within
an area designed as extreme
nonattainment for ozone, which limits
net project emissions to the rate of 10
tons per year of NOX, is limited to
constructing 219,368 square feet (5.04
acres) of apron area, which also causes
0.93 tons of VOC emissions. As a
reference, four acres is generally
sufficient to provide remote or
‘‘hardstand’’ (non-gate) parking for three
narrow-body aircraft. Construction of an
airfield/apron area on the order of 2.38
million square feet (54.7 acres) causes
emissions of VOC up to 10 tons per
project, creating emissions of NOX of
approximately 109 tons. New airfield
construction on the order of 150 to 600
acres would be required to exceed the
de minimis thresholds for CO, SO2 and
PM10. Generally speaking, emissions of
NOX are on the order of three times the
emissions of CO for these types of
projects and are more than 10 times the
emissions of the remaining criteria
pollutants.
4. Aircraft Gate Areas on Airside
Aircraft gate areas refer to the area
outside of the terminals and concourses
where jetways are used to link parked
aircraft to the terminal building. Federal
actions to improve aircraft gate areas
(e.g., gate electrification) can be part of
airport modernization efforts involving
new airline tenants or the introduction
of newer and more efficient technology.
Aircraft gate areas involve a wide range
of activities from aircraft loading and
unloading of passengers and cargo to the
servicing of aircraft by lavatory, food
supply, and maintenance vehicles.
Upgrades to the aircraft gate area are
often needed to accommodate changing
flight schedules and daily activity. The
addition or modification of jetways to
existing terminal buildings is typically
done to adjust to changes in air travel
demand and airline requirements. Such
projects are intended to improve
34 EPA Report NR–005A, December 9, 1997,
revised June 15, 1998, Median Life, Annual
Activity, and Load Factor Values for Nonroad
Engine Emissions Modeling.
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passenger terminal service by reducing
passenger queuing and waiting times.
Actions to approve or fund the
upgrading of aircraft gate areas are
presumed to conform provided such
actions do not increase aircraft
operations or introduce a larger class of
aircraft at the airport.
5. Lighting Systems
Airport sponsors may need to install
new lighting systems to maintain proper
illumination of roadways, taxiways,
runways, and parking areas. The data
from the FAA surveys indicated that
airport upgrading and installing of new
lighting systems is done on an asneeded basis.
Minor mechanical work is required
for the installation effort, followed by
electrical work that does not require
large off-road construction equipment.
Assuming the installation requires the
use of a pickup truck, a utility truck, an
excavator, and a small generator, the
construction will have to proceed
continuously (eight hours a day, 20 days
a month) for more than 17 months (1.4
years) in order to produce emissions
near the level of 10 tons of NOX. For the
remaining criteria pollutants and
precursors, construction on the order of
several years would be required to
approach the de minimis thresholds.
Runway and other lighting systems can
be installed in less than two weeks;
therefore, project construction
emissions are well below de minimis
and presumed to conform.
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6. Terminal and Concourse Upgrades
The opportunity to expand or upgrade
terminals and concourses for improving
passenger convenience or
administrative use typically involves
increasing or renovating the interior
terminal space, including offices, hold
rooms, concessions, restrooms, and gate
areas. Terminal and concourse upgrades
do not include new or upgraded
heating, ventilation, and air
conditioning systems, which are
covered under a separate presumed to
conform action (#7) because of their
additional operating emissions.
Qualifying projects in this category do
not include terminal replacement
projects or have the effect of attracting
more passengers. Nor do they have the
effect of increasing the airport’s ability
to accommodate additional numbers or
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types of aircraft or to increase passenger
loading on scheduled flights. Major
terminal and/or concourse expansion
projects that are designed to increase
passenger usage or to support increased
airfield capacity through new aircraft
gates, runways, taxiways, etc. require an
inventory of direct and indirect
emissions to determine the further
applicability of general conformity.
Construction vehicles and equipment
are the dominant source of emissions
when expanding or upgrading
terminals. A conservative approach to
quantifying construction emissions was
used to determine the appropriate limits
for this type of activity. The emission
limits are presented in Table III–1 under
‘‘Terminal Upgrades’’ according to the
de minimis thresholds.
A proposed terminal expansion
project located in the FAA’s Southern
Region was used as the representative
project. The terminal was proposed to
have an additional footprint of 381,000
square feet. This proposed project was
purposely selected to provide a
conservative estimate of construction
emissions normally released from this
type airport improvement activity, even
though this presumed to conform
activity is limited to non-capacity
enhancing projects. Emissions were
quantified in this case from construction
activities, including soil cement
preparation, subgrade preparation, light
and heavy demolition, cement base
treatment, installation of the grade
aggregate base, construction of the
terminal, light and heavy utility work,
and light and heavy earthwork. In
addition, the proposed terminal
expansion was assumed to occur within
the same calendar year instead of the
proposed schedule of seven years.
Construction emissions were
calculated using prescribed EPA
methodology incorporating the
projected construction activity level, the
number of construction vehicles and
equipment, and industry-wide
utilization rates. Emission factors for
construction vehicles and equipment
were taken from EPA databases for
nonroad vehicles and engines,35 and
their updates.36
35 EPA Report 460/3–91–02, November 1991,
Nonroad Engine and Vehicle Emission Study—
Report.
36 EPA Report NR–005A, December 9, 1997,
revised June 15, 1998, Median Life, Annual
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A proposed terminal/concourse
expansion project is presumed to
conform up to the square foot additions
(footprint) of the project as determined
by the most limiting pollutant (see Table
III–1). The prescribed build-out limits
per calendar year apply to all
components of the terminal/concourse
upgrade project according to the air
quality status of the area in which the
project is located.
7. New HVAC Systems, Upgrades, and
Expansions
Upgrading and expanding heating,
ventilation, and air conditioning
(HVAC) systems are presumed to
conform because any emission increases
associated with improvements to airport
heating and cooling systems are
generally minor and well below de
minimis thresholds.
Heating for airport terminal buildings
is typically provided through a boiler
system.37 Boilers may be fueled by
natural gas, coal (bituminous, subbituminous, or anthracite), No. 5 and
No. 6 fuel oil (residual), No. 2 fuel oil
(diesel), culm fuel, and liquefied
petroleum gas (propane or butane).
Pollutant emissions due to the operation
of boilers vary with the fuel used. The
emission factors for the various fuels are
presented in Table III–2 below.
A new, upgraded, or expanded boiler
system involves the installation of new
equipment to replace or expand the
capacity of existing boiler systems.
Boilers can be very large and are
sometimes delivered on flatbed semitractor trailer trucks and set in place by
a crane. Table III–3 presents the
construction emissions, primarily NOX
and CO, associated with the installation
of a large boiler as described.
BILLING CODE 4910–13–P
Activity, and Load Factor Values for Nonroad
Engine Emissions Modeling.
37 A boiler is an encased vessel that provides a
means for combustion heat to be transferred into
water until it becomes steam. The steam is then
used to heat the building through a network of
pipes. When water is boiled into steam its volume
increases about 1,600 times, which is an efficient
means for transferring heat for a process.
HVACWebTech, Inc.
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Airport terminals consume energy for
heat at a higher rate than most public
buildings. The reasons for this include
the open areas surrounding many
airports, heat loss from the movement of
people and baggage in and out of
buildings, and the usual 24-hour
operation of facilities. The consumption
of energy to generate heat is also
dependent upon the design of the
terminal building. For instance, many
airport terminals are designed with
exterior glass walls or incorporate
design, art, and architectural treatments
that reflect local customs and
community history.38 The many
variations of airport terminal design,
including geographical location, make it
impractical to identify the ‘‘typical
terminal building’’ for purposes of
determining total emissions. Therefore,
the presumption of conformity could
not be based on the characteristics of the
building, but rather on the volume of
fuel consumed.
As discussed, emissions resulting
from the operation of boilers depend on
the type of fuel powering the boiler
system. Emissions from the use of
propane, butane, and natural gas are of
concern in ozone nonattainment and
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38 FAA AC 150/5360–13, April 22, 1988, Planning
and Design Guidelines for Airport Terminal
Facilities.
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maintenance areas since the primary
pollutant from combustion of these fuels
is NOX, a precursor to ozone formation.
Hydrocarbons (HCs) are another
precursor to ozone but they are
relatively low for these fuel types in
comparison to NOX emissions. The
primary pollutant from the combustion
of fuel oil (No. 2 diesel, and No. 5 and
No. 6 residual) is SO2, while particulate
matter is the primary pollutant from the
combustion of coal, including culm fuel.
Therefore, NOX, SO2, PM2.5, and PM10
are the most likely limiting pollutants
for the operation of boiler systems at
airports.
Table III–4 below presents maximum
annual fuel throughput for heating
systems and boilers by fuel type at
levels that do not equal or exceed the de
minimis thresholds. The FAA Emissions
and Dispersion Modeling System
(EDMS) was used to perform the
calculations. EDMS emission factors are
conservatively based on EPA’s AP–42
emissions quantification
methodology.39
The analysis shows, for example, that
an airport located in a severe
nonattainment area for ozone, with a de
minimis NOX threshold of 25 tons per
year, could operate new or improved
39 FAA, 2007, Emissions and Dispersion Modeling
System EDMS Version 5.0.
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boilers using up to 5.05 million cubic
meters of natural gas annually, which is
sufficient to heat a building of
approximately 210,000 square feet.40
NOX emissions in a severe ozone
nonattainment area would be limited to
907,000 gallons of No. 6 fuel oil
(residual), 2,065,000 gallons of No. 2
fuel oil (diesel), 2,603,000 gallons of
propane, 1,515 short tons of bituminous
coal, or 2,777 short tons of anthracite
coal on an annual basis.
The installation, upgrade, or
expansion of an airport HVAC system
that requires a permit under new source
review (NSR) or prevention of
significant deterioration programs is
exempt from a general conformity
determination.41 The inclusion of
airport boiler installations/
modifications as a presumed to conform
activity does not affect existing or future
requirements of Federal, State or local
air quality operating permit programs.
Proper compliance with all applicable
environmental regulations must be
maintained.
BILLING CODE 4910–13–P
40 Assuming a 100,000 sq. ft. one-floor building
would require approximately 2.4 million cubic
meters of natural gas to heat the building, annually;
based on the industry standard heat value, 1,000
BTU per cubic foot of natural gas, annually [Airtron
Heating and Air Conditioning, Columbus, Ohio].
41 40 CFR part 93, § 93.153(d)(1).
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BILLING CODE 4910–13–C
8. Airport Security
Based on collected project
information and additional agency
experience with airport security actions
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following the events of September 11,
2001, the FAA has determined that
dedicated security-related airport
projects qualify as presumed to conform
actions, including modification of
existing terminals with luggage and
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passenger scanning devices, addition of
camera surveillance, bolstering of
airport security fencing, and
reinforcement of airport access control.
In most cases, the installation of
security equipment and upgraded
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operations in existing facilities will not
result in the generation of air emissions.
If the construction and installation of
some dedicated security projects do
cause emissions, these emissions will be
minor and well below the de minimis
thresholds.
Security requirements also may
dictate that parking spaces close to
terminal buildings be eliminated.42 As a
result, FAA actions associated with the
expansion of parking facilities to
compensate for lost close-in parking are
presumed to conform provided these
actions are limited to a one-for-one
replacement of parking capacity.
Generally, the relocation of parking
spaces away from the terminal building
will reduce vehicle miles traveled
(VMT) on airport property, resulting in
an emissions decrease.
It is important to note that this
category of presumed to conform actions
is separate from exempt Federal actions
under the Rule that are part of a
continuing response to an emergency or
disaster.43 Agency use of the emergency
exemption is limited in time and must
involve overriding concerns for public
health and welfare, national security
interests, and foreign policy
commitments.44
9. Airport Safety
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Airport projects relating to airport
safety include actions specific to the
Runway Safety Area (RSA). FAA
regulations specify the requirements for
a RSA, which is defined as the surface
area that surrounds and extends beyond
the runway ends that is required for
reducing the risk of damage to airplanes
in the event of an undershoot,
overshoot, or excursion from the
runway.45 RSA improvements are
presumed to conform unless a new road
or the relocation of a road is required.
In addition to a safe airfield, airport
projects to build, expand, replace,
upgrade, or equip a required Aircraft
Rescue and Firefighting Facility (ARFF)
are presumed to conform. These
facilities are relatively small airport
projects and must be provided by the
airport to ensure airport and passenger
safety. Airports must meet ARFF
requirements as specified under 14 CFR
139.317, and are responsible for
upgrading an ARFF if there is an
increase in the average daily departures
or the length of an air carrier aircraft.46
42 FAA Aviation Security Directive issued
February 2002.
43 40 CFR Part 93, § 93.153(e).
44 Ibid.
45 FAA AC 150/5300–13, September 29, 1989,
Airport Design.
46 Per index under 14 CFR Part 139, § 139.319(a)
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10. Airport Maintenance Facilities
Airport maintenance facilities house
the equipment necessary to run, service,
and maintain the airport environs.
These facilities can include vehicle
service centers, fueling stations, and
storage areas for snow removal and
maintenance equipment. FAA actions
associated with upgrading airportowned maintenance facilities are
presumed to conform based on the fact
that these facilities typically require
only minor construction. However, the
installation or upgrading of aircraft
maintenance facilities (typically owned
by an airline or charter company) that
are used to paint or maintain aircraft at
an airport are not considered presumed
to conform because aircraft maintenance
facilities may cause an increase in
flights to meet maintenance schedules.
11. Airport Signage
Airport sponsors place signs
throughout the airport property to direct
passengers, employees, and vendors to
terminals, parking lots, rental car areas,
maintenance areas, etc. In addition,
airports provide a network of signs to
direct aircraft and vehicles on the
airfield. Airport signage is often
electrified for illumination at night and
for other times of limited visibility. In
general, airport signage installation can
be completed in a matter of days or
weeks. It would require more than a
year of continuous installation to exceed
the 25-ton threshold for NOX. Therefore,
airport signage installation projects are
presumed to conformed.
12. Commercial Vehicle Staging Areas
Commercial vehicle staging areas at
airports serve as temporary holding
areas for taxicabs, limousines, and other
commercial vehicles. Such areas reduce
the need to idle at the terminal curb
front and help to decongest the terminal
roadways. Airports that employ
commercial vehicle staging areas may
enforce specific idling restrictions or
engine-off mandates to further reduce
air quality impacts. Generally, the use of
commercial vehicle staging areas is an
emissions reduction strategy because
the alternative inherently creates more
emissions from increased traffic and
congestion at the terminal.
A Federal action to develop a
commercial vehicle staging area for
purposes of relieving airport traffic
congestion is presumed to conform
based on the criteria provided in Table
III–1 for a ‘‘Commercial Vehicle Staging
Area.’’ Providing a commercial vehicle
staging area does not cause an increase
in the volume of vehicles on regional
roadways and impacts air quality only
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41577
through the use of construction
equipment to pave the staging area.
Construction emissions are primarily
comprised of NOX and CO.
The quantity of emissions associated
with the construction of an asphalt
taxicab staging area was based on a
construction design for a regional
asphalt roadway. The calculation of
emissions included activities such as
excavation, preparation of the subgrade,
adding a base layer of stone, fine
grading, and paving. The paving process
included the application of a tack coat,
wearing course, and the final seal coat.
The type and use of construction
equipment was determined based on
information obtained from the R.S.
Means’ Means Building Construction
Cost Data, and the State of Ohio
Department of Transportation’s Manual
of Procedures for Flexible Pavement
Construction and Pavement Design and
Rehabilitation Manual. Rated
horsepower and load factors for each
construction unit was obtained from the
EPA’s Nonroad Engine and Vehicle
Emission Study-Report and Median Life,
Annual Activity, and Load Factor
Values for Nonroad Engine Emissions
Modeling, and the Caterpillar
Performance Handbook.
Emission factors were obtained from
the EPA’s Nonroad Engine and Vehicle
Emission Study-Report.
The acreage that could be paved
without equaling or exceeding the de
minimis thresholds for each applicable
nonattainment or maintenance category
was calculated and summarized in
Table III–1. For instance, an airport
located within an area designated as
severe nonattainment for ozone, which
limits net project emissions to an annual
rate of 25 tons of NOX, is limited to a
commercial vehicle staging area of about
13 acres, or 561,584 square feet, which
results in 2.35 tons of VOC emissions.
Paving of approximately 137 acres is
required to cause emissions of VOC of
nearly 25 tons, as established for a
severe nonattainment area for ozone. In
order to approach the 100 ton de
minimis thresholds for other criteria
pollutants, paving areas of
approximately 140 acres would be
required for CO, 556 acres for SO2, and
more than 595 acres for PM10. Therefore,
NOX is the limiting pollutant for paving
projects at airports and emissions of
VOC, CO, SO2, and PM10 are
considerably less in comparison to NOX.
13. Low-Emission Technology and
Alternative Fuel Vehicles
A growing number of airports are
interested in new technology and
vehicle systems to reduce stationary and
mobile emissions. Based on agency and
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mstockstill on PROD1PC66 with NOTICES
airport low-emission programs over the
past several years, which provide
extensive data and documentation to
verify the emission reduction benefits of
new low-emission technology, these
activities are presumed to conform.
Activities that are presumed to
conform include the replacement,
substitution, or conversion of
conventional fuel vehicles (gasoline,
diesel) to vehicles using alternative or
clean conventional fuel technology.
Qualified activities also encompass
airport low-emission infrastructure
improvements and the use of refueling
or recharging stations needed to service
airport low-emission vehicles.
All low-emission activities funded
through the FAA Voluntary Airport Low
Emission Program (VALE) or that are
required as part of environmental
mitigation are presumed to conform.47
The VALE program requires that
vehicles purchased under the program
meet specific low-emission standards
and that these vehicles and other
program equipment remain at the
airport for their useful life.
14. Air Traffic Control Activities and
Adopting Approach, Departure and
Enroute Procedures for Air Operations
The preamble to the General
Conformity Rule 48 states that:
‘‘In order to illustrate and clarify that
the de minimis levels exempt certain
types of Federal actions, several de
minimis exemptions are listed in
51.853(c)(2). There are too many Federal
actions that are de minimis to
completely list in either the rule or this
preamble.’’
As an illustration of exempt actions,
EPA states in the preamble that ‘‘Air
traffic control activities and adopting
approach, departure and enroute
procedures for air operations’’ are
among other actions that are de minimis
(preamble, p. 63229, I(2)) and should be
exempt from the Rule. Because air
traffic control activities are cited in the
preamble but not in the Rule itself, the
FAA believes that it is prudent to
document these activities as presumed
to conform.
Air traffic control activities are
defined as actions that promote the safe,
orderly, and expeditious flow of aircraft
traffic, including airport, approach,
departure, and enroute air traffic
control. Airspace and air traffic actions
(e.g., changes in routes, flight patterns,
and arrival and departure procedures)
are implemented to enhance safety and
increase the efficient use of airspace by
47 FAA Order 5100.38C, Airport Improvement
Program Handbook, June 2005, §§ 580, 585.
48 58 Fed. Reg. 63229 (Nov. 30, 1993).
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reducing congestion, balancing
controller workload, and improving
coordination between controllers
handling existing air traffic, among
other things.
Project-related aircraft emissions
released into the atmosphere above the
inversion base for pollutant
containment, commonly referred to as
the ‘‘mixing height,’’ (generally 3,000 ft.
above ground level) do not have an
effect on pollution concentrations at
ground level.49 50 Therefore, air traffic
control actions above the mixing height
are presumed to conform.
In addition, the results of FAA
research on mixing heights indicate that
changes in air traffic procedures above
1,500 ft. AGL and below the mixing
height would have little if any effect on
emissions and ground concentrations.51
Such actions in the vicinity of the
airport are tightly constrained by
runway alignment, safety, aircraft
performance, weather conditions,
terrain, and vertical obstructions.52
Accordingly, air traffic actions below
the mixing height are also presumed to
conform when modifications to routes
and procedures are designed to enhance
operational efficiency (i.e., to reduce
delay), increase fuel efficiency, or
reduce community noise impacts by
means of engine thrust reductions.
Other air traffic procedures and system
enhancements that are presumed to
conform include actions that have no
effect on air emissions or result in air
quality improvements, such as gate hold
procedures which reduce queuing,
idling, and flight delays.
In FAA’s experience, airport capacity
improvements result from market forces
in today’s deregulated environment that
determine where airlines fly and how
often. These forces lead, for example, to
airport planning and development of
new runway or terminal projects, which
are large actions that are not presumed
to conform and must be evaluated
further. Limited refinements to terminal
air traffic procedures below the mixing
height typically reduce local emissions
as a result of improved efficiencies,
reduced ground delays, and noise
mitigation.
49 EPA Report, Procedures for Emission Inventory
Preparation, Volume IV: Mobile Sources [420R–92–
009], section 5.2.2., 1992.
50 Realistic Mixing Depths for Above Ground
Aircraft Emissions, Journal of the Air Pollution
Control Association, Vol. 25, No. 10, Howard M.
Segal, Boeing, 1975.
51 Report on ‘‘Consideration of Air Quality
Impacts by Airplane Operations At or Above 3,000
feet AGL,’’ FAA–AEE–00–01, September 2000, p. 5.
52 FAA Advisory Circulars No. 25–13 and No. 91–
53A describe requirements that must be met when
using reduced power for takeoff.
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15. Routine Installation and Operation
of Airport Navigation Aids
Aviation navigation aids represent the
facilities and equipment used for
communications, navigation, and
surveillance (CNS) systems.53 The use
and maintenance of CNS systems is
essential to safe air commerce and
national security.54 Airports are
required to establish adequate
maintenance systems for navigational
aid facilities to the level of performance
achieved at original commission.55
Similar to the previous presumed to
conform action for air traffic control
activities, EPA states in the preamble
that ‘‘routine installation and operation
of aviation (and maritime) navigation
aids’’ are below de minimis and should
be considered exempt actions.56
Because these activities are cited in the
preamble but not in the Rule itself, the
FAA believes that it is prudent to
document these activities as presumed
to conform.
The routine installation, in-kind
replacement, and maintenance of
navigational aids (e.g., Air Traffic
Control Towers (ATCT), Instrument
Landing Systems (ILS), Approach Light
Systems (ALS)) are presumed to
conform because these activities will
not generate emissions that exceed de
minimis levels. Moreover, emissions
generated by construction equipment
and maintenance vehicles used to
transport workers and equipment to
CNS system sites are negligible
considering the temporary nature of
construction and maintenance activities
and the limited number of vehicles
involved.
If the installation of new or upgraded
navigational aids for improved safety
and efficiency also increases the
capacity of the airport or changes the
operational environment of the airport,
these CNS activities are not presumed to
conform.57
Also presumed to conform are CNS
emergency or standby generators
powered by natural gas or propane.
These generators provide electric power
in case of primary power failure and are
operated intermittently, with an
estimated total time of operation of less
than 100 hours per year. Because of the
infrequent use and small size (135
kilowatts or less) of the engine
generators and the use of clean-burning
53 14
CFR 171.1–171.51.
CFR 169.1(a)
55 14 CFR Part 171.
56 58 FR 63229, I(6) (Nov. 30, 1993).
57 Consistent with FAA Order 1050.1E, Section
401 ‘‘Actions Normally Requiring an Environmental
Assessment’’.
54 14
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fuels, the engine generators produce
negligible air emissions.
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IV. How To Apply Presumed To
Conform Actions
The qualifying project categories
discussed in the preceding section may
be referred to as the FAA ‘‘presumed to
conform list.’’ The analysis for
presumed to conform actions is
considered representative of the vast
majority of possible airport projects
within each category. However, FAA
employees must consider the
appropriateness of applying this list,
particularly how the proposed project
compares to the presumed to conform
category of projects.58
As authorized under the CAA, the list
provides an additional way for the FAA
to improve its environmental program
management while still ensuring that
agency air quality goals and
requirements are met. Use of the list
will reduce review times, eliminate
unnecessary paperwork, clarify
analytical requirements for all project
actions, and insure that the proper level
of documentation is applied in each
case. Moreover, in some instances, the
presumed to conform list can provide
another method that the FAA can use to
demonstrate conformity with an
applicable SIP.
As part of the process of developing
the list of actions presumed to conform
under 40 CFR 93.153(f), the FAA, in
close consultation with the EPA, has
exercised its discretion to establish
separate procedures.59 FAA established
its own procedures for including
presumed to conform actions in total
emissions in determining applicability
and conformity to avoid segmentation of
projects for conformity analysis when
emissions are reasonably foreseeable.
When applying the presumed to
conform list, the FAA determines
whether it is dealing with proposed
presumed to conform actions that
represent one or more ‘‘single actions’’
or a ‘‘combined action.’’ The FAA also
determines whether the combined
action involves multiple connected
presumed to conform actions or
presumed to conform actions that are
58 The list must be used carefully because
‘‘[w]here an action otherwise presumed to conform
under paragraph (f) of this section * * * does not
in fact meet one of the criteria in paragraph (g)(1)
of this section, that action shall not be presumed
to conform and the requirements of § 93.150 and
§§ 93. 155 through 93.160 shall apply for the
Federal action.’’ See 40 CFR § 93.153(j).
59 It is a fair inference from EPA’s April 9, 2007
letter to FAA that the EPA interprets 40 CFR
§ 93.153(f) to permit the FAA to define total direct
and indirect emissions to include presumed to
conform actions in certain circumstances,
notwithstanding 40 CFR § 93.152.
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part of a larger project being evaluated
under the environmental review
requirements of the National
Environmental Policy Act (NEPA).
Below is a description of the different
actions and procedures.
Single Action. A single action is
defined as a presumed to conform
action that is not connected or
dependent on other actions and which
is determined to have independent
utility.60 For such actions, no general
conformity evaluation or applicability
analysis is required and agency officials
may simply document that the project
action is considered presumed to
conform on the basis of this Notice and
the applicable project category.
Using the analysis and documentation
for this Notice meets a major intent of
presumed to conform—namely to
reduce the analysis burden for actions
that have little or no direct or indirect
emissions. By analyzing each project
category in the presumed to conform list
and reporting the findings in the
preceding section, the FAA has shown
that the resulting emissions from each
presumed to conform action would
typically be below the applicable de
minimis thresholds.
Combined Action. A combined action
is defined as either: (1) Multiple
presumed to conform actions that are
connected to each other; or (2) one or
more presumed to conform actions that
are connected to one or more nonpresumed to conform actions being
evaluated under the environmental
review requirements of NEPA (e.g., EA
or EIS). The Council on Environmental
Quality defines ‘‘connected actions’’ as
actions that are closely related
involving, for example, interdependent
parts of a larger action, dependence on
a larger action for justification, or
dependence on other actions taken
previously or simultaneously.61
Where there is a combined action,
then only one action specified on the
presumed to conform list may be
excluded in calculating total direct and
indirect emissions. The emissions from
all the other actions that are not
otherwise exempt must be calculated to
determine that total emissions from the
remaining actions.62 For example, the
FAA may undertake a project with
several connected actions that must be
analyzed under NEPA. Several of those
actions may individually be listed on
the presumed to conform list because
those actions taken alone would
60 40 CFR 1506.1(c)(1) and 1508.25(a), Council on
Environmental Quality, Regulations for
Implementing the Procedural Provisions of NEPA.
61 40 CFR 1508.25(1).
62 An allowance to this provision is discussed in
the following paragraph.
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41579
typically have emissions below de
minimis levels. To determine whether
such a project requires a conformity
determination, FAA excludes one
presumed to conform action and then
prepares an applicability analysis for
the remaining actions. In other words,
FAA determines whether the emissions
from the combination of actions, less
one presumed to conform action, equals
or exceed de minimis levels or assists in
demonstrating conformity.
FAA procedures for combined actions
permit FAA to exclude the emissions
from one presumed to conform action
and to prepare an applicability analysis,
and a conformity determination if
necessary, based upon the total direct
and indirect emissions of the actions
that are not otherwise exempt.63 Thus,
in a combined action, the emissions
from one presumed to conform action
may be excluded from the calculation of
total project emissions. The process
could show that either the combined
action (minus the one excluded
presumed to conform action) would
equal or exceed de minimis thresholds
and thus trigger a conformity
determination, or that the combined
action (minus the one excluded
presumed to conform action) is below
de minimis thresholds with no further
action required. Consequently, the
allowance to exclude one presumed to
conform action could make a difference
as to whether a conformity
determination is needed or whether
conformity is demonstrated. FAA
officials have the authority and
responsibility to decide which
presumed to conform action is excluded
if more than one is present in a
combined action.64
The FAA has determined as a matter
of policy to implement the presumed to
conform list with respect to combined
actions by balancing considerations
about project segmentation 65,
connected actions under NEPA 66, and
the permitted exclusion of emissions
attributable to presumed to conform
actions under the Rule. With regard to
63 Emissions from exempt actions are excluded in
accordance with 40 CFR 93.152.
64 Requirements and allowances for combined
actions are based on interagency communications
with EPA.
65 In the preamble to the General Conformity
Rule, EPA decided not to adopt its initial proposal
to permit Federal agencies to use the NEPA concept
of tiering and analyze actions in a staged manner
in conducting conformity analyses. EPA explained,
among other things: ‘‘[T]iering could cause the
segmentation of projects for conformity analysis,
which might provide an overall inaccurate estimate
of emissions. The segmentation of projects for
conformity analyses when emissions are reasonably
foreseeable is not permitted by this rule.’’ (58 FR
63240).
66 40 CFR 1508.7.
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the latter, the Rule states in 93.152
under Definitions: ‘‘The portion of
emissions which are exempt or
presumed to conform under Section
93.153(c), (d), (e), or (f) are not included
in the ‘‘total of direct and indirect
emissions.’’ Likewise, as stated in the
preamble (58 FR 63233): ‘‘The final rule
requires the inclusion of the total direct
and indirect emissions in the
applicability and conformity
determinations, except the portion of
emissions which are exempt or
presumed to conform* * *’’ 67 The
FAA applies this definition to exclude
emissions for single and multiple
presumed to conform actions that are
not connected to one another. FAA
procedures for combined actions offer a
reasonable approach by placing a more
conservative limit on the permitted
exclusion of presumed to conform
emissions than 40 CFR 93.152.
Documentation. Documentation
requirements for combined actions are
greater typically than for single actions.
On some combined actions, the FAA
requires that presumed to conform
actions be analyzed and documented by
means of an emissions inventory using
the FAA EDMS model and related
procedures.68 This standard modeling
methodology is project-specific and
more refined than the quantification of
emissions in this Notice and therefore
offers greater confirmation in some
cases that the applicable emissions will
not equal or exceed the de minimis
thresholds.
Specifically, standard modeling
methodology must be used if the project
includes: (1) One or more presumed to
conform actions that are connected to
non-presumed to conform actions which
are being evaluated under the
environmental review requirements of
NEPA; or (2) two or more presumed to
conform actions are involved which are
not supported by additional
quantification in the Notice (see below).
In these cases, each presumed to
conform action must be modeled and
inventoried in the same manner and to
the same extent as non-presumed to
conform actions. Moreover, presumed to
mstockstill on PROD1PC66 with NOTICES
67 EPA
gives as an example a Federal action that
includes construction of a new industrial boiler
project, that is exempt, and a separate office
building. The emissions from the hypothetical
boiler exceed de minimis levels however it is
exempt and so the emissions are excluded. The
emissions from the office building alone are below
de minimis levels. As a result, the action as a whole
does not need a conformity determination. (58 Fed.
Reg. 63233).
68 The primary source of agency air quality
procedures and analysis requirements is the FAA
Air Quality Handbook entitled Air Quality
Procedures for Civilian Airports and Air Force
Bases, FAA and USAF, April 1997.
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Jkt 211001
conform actions must be listed as a
separate line item in the emissions
inventory and clearly explained and
presented in all related study
documentation.
Consistent with the goal of reducing
the analysis burden for presumed to
conform actions, the Notice may be used
in some instances to document
presumed to conform actions in lieu of
the standard modeling methodology.
Specifically, the Notice may be used if
the project is a single action or if it is
limited to multiple presumed to
conform actions that are supported in
the Notice by additional quantification.
Presumed to conform actions or
categories with additional quantification
(e.g., data tables) are: Pavement
markings; pavement monitoring
systems; non-runway pavement work;
lighting systems; terminal and
concourse upgrades; new HVAC
systems, upgrades, and expansions;
airport signage; commercial vehicle
staging areas; and low-emission
technology and alternative fuel
vehicles.69 Also, the Notice may be used
if all but one of the project’s multiple
presumed to conform actions are
supported by additional quantification
and the FAA excludes, as allowed, the
emissions from the one presumed to
conform action that is not supported by
additional quantification.
Regional Significance
FAA employees must also reflect that
they have considered potential regional
significance, that is, whether the total
direct and indirect emissions of the
pollutants from each presumed to
conform action represent 10 percent or
more of a nonattainment or maintenance
area’s total emissions of that pollutant
under 40 CFR 93.153(i).70 If project
emissions are regionally significant on
this basis, the FAA would be required
to prepare a conformity analysis and
determination for a presumed to
conform Federal action.
As the FAA indicated in its Draft
Notice, strong evidence indicates that
presumed to conform actions are not
likely to be regionally significant.71
69 Documentation for low-emission technology
and alternative fuel vehicles may be based on the
findings of the FAA VALE program and its
preceding pilot program (ILEAV).
70 This section provides that actions specified by
individual federal agencies that have met applicable
criteria and procedures are presumed to conform
‘‘except as provided in paragraph (j) of this
section.’’ Paragraph (j) states: ‘‘Where an action
otherwise presumed to conform under paragraph (f)
of this section is a regionally significant action
* * * that action shall not be presumed to conform
and the requirements [for a conformity analysis and
determination] shall apply for the Federal action.’’
71 The FAA Air Quality Handbook states that an
airport project that is presumed to conform is
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However, the FAA has decided to defer
action on this aspect of its Draft Notice
based upon consultation with the EPA.
Issued in Washington, DC on July 24, 2007.
Charles R. Everett, Jr.,
Manager, Planning and Environmental
Division, Office of the Associate
Administrator for Airports.
[FR Doc. 07–3695 Filed 7–25–07; 12:19 pm]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Highway Administration
[Docket No. FHWA–2007–28797]
Agency Information Collection
Activities: Notice of Request for
Reinstatement of a Previously
Approved Collection for Which
Approval Has Expired
Federal Highway
Administration (FHWA), DOT.
ACTION: Notice and request for
comments.
AGENCY:
SUMMARY: The FHWA has forwarded the
information collection request described
in this notice to the Office of
Management and Budget (OMB) for
approval of a reinstatement of a
previously approved collection for
which approval has expired. We
published a Federal Register Notice
with a 60-day public comment period
on this information collection on May
11, 2007. We are required to publish
this notice in the Federal Register by
the Paperwork Reduction Act of 1995.
DATES: Please submit comments by
August 29, 2007.
ADDRESSES: You may send comments
within 30 days to the Office of
Information and Regulatory Affairs,
Office of Management and Budget, 725
17th Street, NW., Washington, DC
20503, Attention DOT Desk Officer. You
are asked to comment on any aspect of
this information collection, including:
(1) Whether the proposed collection is
necessary for the FHWA’s performance;
(2) the accuracy of the estimated
burden; (3) ways for the FHWA to
enhance the quality, usefulness, and
clarity of the collected information; and
(4) ways that the burden could be
minimized, including the use of
unlikely to have emission levels that are regionally
significant (Air Quality Procedures for Civilian
Airports and Air Force Bases, FAA and USAF,
April 1997). This is because, based on the highest
de minimis threshold level (100 tons per year), in
order for an action’s net emissions to represent 10
percent or more of a maintenance or nonattainment
area’s total emissions of a particular pollutant, the
area’s total emissions inventory for any pollutant
must be less than 1,000 tons, which is unlikely.
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Agencies
[Federal Register Volume 72, Number 145 (Monday, July 30, 2007)]
[Notices]
[Pages 41565-41580]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 07-3695]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
Federal Presumed To Conform Actions Under General Conformity
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final Notice.
-----------------------------------------------------------------------
SUMMARY: The Clean Air Act (CAA) section 176(c), 42 U.S.C. 7506(c) and
Amendments of 1990 \1\ require that all Federal actions conform to an
applicable State Implementation Plan (SIP). The U.S. Environmental
Protection Agency (EPA) has established criteria and procedures for
Federal agencies to use in demonstrating conformity with an applicable
SIP that can be found at 40 CFR 93.150 et seq. (``The Rule'').
---------------------------------------------------------------------------
\1\ Clean Air Act Title I Air Pollution Prevention and Control,
Part D, Subpart 1, Section 176 Limitation on Certain Federal
Assistance.
---------------------------------------------------------------------------
The Rule allows Federal agencies to develop a list of actions that
are presumed to conform to a SIP \2\ for the criteria pollutants and
their precursors that are identified in 40 CFR 93.153(b)(1) and (b)(2)
and in the National Ambient Air Quality Standards (NAAQS) under 40 CFR
50.4-50.12.\3\ The criteria pollutants of concern for local airport air
quality are ozone (O3) and its two major precursors
(volatile organic compounds (VOC) and nitrogen oxides
(NOX)), carbon monoxide (CO), nitrogen dioxide
(NO2), sulfur dioxide
[[Page 41566]]
(SO2) \4\, and particulate matter consisting of small
particulates with a diameter less than or equal to 2.5 micrometers
(PM2.5) and larger particulates with a diameter of up to 10
micrometers (PM10).\5\
---------------------------------------------------------------------------
\2\ 40 CFR Part 93, Sec. 93.153(f).
\3\ NAAQS established by the EPA represent maximum concentration
standards for criteria pollutants to protect human health (primary
standards) and to protect property and aesthetics (secondary
standards).
\4\ FAA calculated SOX is considered equal to
SO2
\5\ PM2.5 is a subset of PM10 with
separate standards for each.
---------------------------------------------------------------------------
According to the Rule \6\, Federal agencies must meet the criteria
for establishing activities that are presumed to conform by either:
---------------------------------------------------------------------------
\6\ 40 CFR Part 93, Sec. 93.153(g).
---------------------------------------------------------------------------
(1) Clearly demonstrating that the total of direct and indirect
emissions from the type of activities that would be presumed to conform
would not:
(i) Cause or contribute to any new violation of any standard in any
area;
(ii) Interfere with provisions in the applicable SIP for
maintenance of any standard;
(iii) Increase the frequency or severity of any existing violation
of any standard in any area; or
(iv) Delay timely attainment of any standard or any required
interim emission reductions or other milestones in any area including
emission levels specified in the applicable SIP \7\; or
---------------------------------------------------------------------------
\7\ 40 CFR Part 93, Sec. 93.153(g)(1).
---------------------------------------------------------------------------
(2) Providing documentation that emissions from the types of
actions that would be presumed to conform are below the applicable de
minimis levels established in 40 CFR Sec. 93.153(b)(1) and (b)(2).\8\
This documentation may be based on similar actions that the agency has
taken over recent years.\9\ Besides documenting the basis for presumed
to conform activities, Federal agencies must fulfill procedural
requirements under the Rule relating to publication in the Federal
Register, notification to Federal/State/local agencies, opportunity for
public comment, and availability of responses to public comments.\10\
---------------------------------------------------------------------------
\8\ Title 40 CFR Part 93, Sec. 93.153(g)(2).
\9\ Ibid.
\10\ Title 40 CFR Part 93, Sec. 93.153(h).
---------------------------------------------------------------------------
In this Notice, the Federal Aviation Administration (FAA) is
identifying a list of actions involving agency approval and financial
assistance for airport projects that are presumed to conform. The
benefits of this list include the elimination of unnecessary agency
costs associated with evaluating actions with few if any emissions. As
a result, the agency will be able to streamline the environmental
process by applying more of its resources to actions that have the
potential to reach regulated emission levels or adversely impact air
quality.
Addressing the need for efficiency and streamlining, the EPA states
that the provisions allowing Federal agencies to establish categories
of actions that are presumed to conform are ``intended to assure that
these Rules are not overly burdensome and Federal agencies would not
spend undue time assessing actions that have little or no impact on air
quality.'' \11\ Furthermore, the EPA states that ``Federal actions
which are de minimis should not be required by this Rule to make an
applicability analysis. A different interpretation could result in an
extremely wasteful process which generates vast numbers of useless
conformity statements.'' \12\ Consequently, the Rule allows individual
Federal agencies to present categories of actions that have been
documented to be de minimis and, therefore should be ``presumed to
conform'' to the Rule under 40 CFR 93.153(f).
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\11\ 58 FR 63228 (Nov. 30, 1993).
\12\ 58 FR 63229 (Nov. 30, 1993).
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This Notice contains a summary of documentation and analysis which
demonstrates that actions described below will not exceed the
applicable de minimis emission levels for nonattainment and maintenance
areas, as specified under 40 CFR 93.153(b). In relation to the agency's
demonstration of presumed to conform actions, the EPA has defined broad
categories of actions in 40 CFR 93.153(c)(2) that are exempt from the
Rule because the actions result in no emissions increase or an increase
in emissions that is clearly de minimis. In this Notice, the FAA
distinguishes various airport-related actions that are exempt under the
Rule from those that are presumed to conform.
Notification Process for Presumed To Conform
The notification requirements in the Rule are as follows: \13\
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\13\ 40 CFR Part 93, Sec. 93.153(h)(1-4).
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(1) The Federal agency must identify through publication in the
Federal Register its list of proposed activities that are presumed to
conform and the basis for the presumptions;
(2) The Federal agency must notify the appropriate EPA Regional
Office(s), State and local air quality agencies and, where applicable,
the agency designated under section 174 of the Act and the metropolitan
planning organization (MPO) and provide at least 30 days for the public
to comment on the list of proposed activities presumed to conform;
(3) The Federal agency must document its response to all the
comments received and make the comments, response, and final list of
activities available to the public upon request; and
(4) The Federal agency must publish the list of such activities in
the Federal Register.
In meeting the requirements above, the FAA issued the Draft Notice,
entitled Federal Presumed to Conform Actions Under General Conformity,
in the Federal Register of Monday, February 12, 2007 (Vol. 72, No. 28,
pp. 6641-6656). All of the appropriate organizations were notified and
encouraged to comment, including EPA Regions, State and local air
quality agencies, and metropolitan planning organizations.
A 45-day public comment period was provided for the Draft Federal
Notice, allowing a few additional weeks for comment beyond the minimum
30-day notice period. Seven (7) letters were submitted to the FAA. From
these letters, the FAA identified twenty-nine (29) separate comments to
which the agency prepared individual written responses. All of the
letters, comments, and responses are publicly available for review on
the FAA Office of Airports Web site for environmental programs.
Based on comments received and follow-up discussions with the EPA,
the FAA made appropriate revisions to the Federal Register Notice. The
FAA is completing its notification requirements by publishing the
completed list of presumed to conform actions in this Final Federal
Register Notice. The public may obtain further program information or
review project documentation by contacting the office and person listed
under ``For Further Information Contact.''
FOR FURTHER INFORMATION CONTACT: Dr. Jake A. Plante, Planning and
Environmental Division, Federal Aviation Administration, 800
Independence Avenue, APP-400, SW., Room 616, Office of Airports,
Washington, DC 20591, jake.plante@faa.gov, phone (202) 493-4875, fax
(202) 267-5257.
Table of Contents
The major sections of this document are as follows:
I. Background
II. Existing Exemptions
III. Presumed To Conform Project Descriptions and Justifications
IV. How To Apply Presumed To Conform Actions
I. Background
Under the Rule (40 CFR 93.153(g)(h)), the FAA and other agencies
are entitled to develop a list of proposed actions that are presumed to
conform. The process of establishing presumed to conform
classifications is predicated on the
[[Page 41567]]
concept of conformity. Conformity assures that an activity that is
presumed to conform does not cause or contribute to any new violation
of the NAAQS or interfere with provisions contained in applicable SIPS.
The administration and enforcement of conformity regulations are
delegated by the EPA to the individual States through provisions in
each SIP. A SIP is the written plan submitted to the EPA detailing each
State's strategy to control air emissions to meet and maintain the
NAAQS in geographic areas that are designated as nonattainment areas.
The EPA requires each State to devise such a plan for each criteria
pollutant causing violations or the EPA will impose a Federal
implementation plan (``FIP'') for the State. When a nonattainment area
achieves compliance with the NAAQS, it becomes a maintenance area for
at least 10 years with ongoing State responsibility to ensure continued
attainment.\14\
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\14\ CAA, Section 175A, 42 U.S.C. 7505a.
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General Conformity
General conformity refers to the process of demonstrating that a
general Federal action conforms to the applicable SIP. A general
Federal action is defined more by what it is not, rather than by what
it is. A general Federal action is any Federal action that is not a
Federal ``transportation'' action and consequently not subject to the
conformity requirements established for Federal highway or transit
actions, referred to as ``transportation conformity.'' A Federal
transportation action is an action related to transportation plans,
programs, and projects that are developed, funded, or approved under
Title 23 United States Code (USC) or the Federal Transit Act (FTA).\15\
Since FAA actions do not meet the definition of a transportation
action, they are general actions by default and thus subject to the
General Conformity Rule.
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\15\ 49 U.S.C. 1601 et seq.
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The FAA and other Federal agencies subject to general conformity
must make a determination that the Federal action conforms to the SIP's
purpose to meet and maintain the NAAQS before the action is taken. If
the proposed actions are not specifically exempt or classified as
presumed to conform, it is necessary to conduct an emissions inventory
as part of the applicability analysis to determine if emissions are
likely to equal or exceed the established screening criteria emission
rates known as the de minimis thresholds. A general conformity
determination is required for each pollutant identified as
nonattainment or maintenance when the total of direct and indirect
emissions caused by a Federal action equals or exceeds any of the
applicable de minimis thresholds.\16\
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\16\ 40 CFR Part 93, Sec. 93.153(b).
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FAA Airport Development Actions Subject to General Conformity
The FAA is responsible for deciding whether its actions involving
an airport located in a nonattainment or maintenance area require a
general conformity evaluation.\17\ FAA actions that require a
conformity evaluation include unconditional approval of any or all
parts of an airport layout plan (ALP), final Airport Improvement
Program (AIP) grant approvals, and approvals for use of Passenger
Facility Charges (PFCs). Other FAA actions that may require a
conformity evaluation include proposed actions for which an
environmental assessment (EA) or environmental impact statement (EIS)
is prepared under the requirements of the National Environmental Policy
Act.
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\17\ ``Conformity evaluation'' refers to the overall process of
assessing whether an action/project is subject to general conformity
requirements, which may include an applicability analysis needed to
make a conformity determination. See Question 1, EPA and
FAA General Conformity Guidance for Airports: Questions and Answers,
September 25, 2002.
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II. Existing Exemptions
For the FAA to provide the proper context and baseline for
identifying and proposing a list of presumed to conform Federal
actions, it is important to consider the extent to which FAA airport-
related actions and activities may qualify for exemption from general
conformity requirements. The EPA has defined broad categories of exempt
actions under 40 CFR 93.153(c)(2) that result in no emissions increase
or increases in emissions that are clearly de minimis. These actions
are not subject to further analysis for applicability, conformity, or
regional significance under the Rule.
As part of this Federal Register Notice, the FAA has interpreted
how the exemptions in the Rule apply to FAA actions associated with
airport facilities and aviation planning. The following discussion
addresses the most relevant examples of these exemptions regarding FAA
actions for airport development.
1. Rulemaking and Policy Development [40 CFR 93.153(c)(2)(iii)]
The FAA develops rules and policies to address issues of safety,
aviation noise abatement, and systematic improvements to efficiency.
This includes issuance of airport policy and planning documents for the
National Plan of Integrated Airport Systems (NPIAS), the Airport
Capital Improvement Program (ACIP), and Advisory Circulars on planning,
design, and development programs. These documents provide
administrative and technical guidance to the airport community and the
public and are not intended for direct implementation. The actual
process of rulemaking or policy development is typically administrative
in nature and does not cause an increase in air emissions.
2. Routine Maintenance and Repair Activities [40 CFR 93.153(c)(2)(iv)]
In conformance with FAA standards and regulations, the airport
sponsor must maintain airport facilities and the airfield in a manner
that ensures the safe operation of the airport. These activities
constitute Federal actions when Federal funding from the FAA is
involved. Airport maintenance, repair, removal, replacement, and
installation work that matches the characteristics, size, and function
of a facility as it existed before the replacement or repair activity
typically qualifies as routine maintenance and repair for purposes of
general conformity. Such activity does not increase the capacity of the
airport or change the operational environment of the airport.
The FAA does not consider major runway reconstruction to qualify as
exempt under the Rule if the reconstruction results in a runway that is
hardened, lengthened, or widened to support a larger class of aircraft.
Proposed funding for such a project would require analysis of emission
levels to determine the applicability of general conformity
requirements.
Routine maintenance for existing runways, taxiways, aprons, ramps,
fillets, and airport roadways includes in-kind resurfacing,\18\ re-
marking of existing runways, taxiways, apron areas, etc., and runway
grooving and rubber removal projects. Other areas of routine
replacement, maintenance, and repair work that may be considered exempt
from the Rule include:
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\18\ Depending on numerous factors affecting surface conditions,
airports will generally resurface asphalt runways every 7-10 years.
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Existing signage.
Existing lighting systems.
Existing pavement markings.
Wind or landing direction indicators.
Existing airport security access control.
Existing buildings and structures.
Existing heating, ventilation, and air conditioning (HVAC)
systems.
Existing infrastructure such as sanitary sewer or
electrical systems.
[[Page 41568]]
General landscaping, erosion control, and grading.
3. Planning, Studies, and Provisions of Technical Assistance [40 CFR
93.153(c)(2)(xii)]
Planning and information-related actions do not represent
implementation of operational changes at the airport and therefore do
not result in emission increases. Consequently, actions such as those
listed below may be considered exempt from the Rule:
FAA funding and acceptance of Master Plans and Updates.
FAA funding of System Planning Studies.
FAA acceptance of noise exposure maps and approval of
noise compatibility programs pursuant to 49 U.S.C. 47501 et seq., as
implemented by 14 CFR Part 150.
FAA approval of noise and access restrictions on
operations by Stage 3 aircraft under 49 U.S.C. 47524, as implemented by
14 CFR Part 161.
4. Transfers of Ownership, Interests, and Titles in Land, Facilities,
and Real and Personal Properties, Regardless of the Form or Method of
the Transfer [40 CFR 93.153(c)(2)(xiv)]
5. Actions (or Portions Thereof) Associated With Transfers of Land,
Facilities, Title, and Real Properties Through an Enforceable Contract
or Lease Agreement Where the Delivery of the Deed Is Required To Occur
Promptly After a Specific, Reasonable Condition Is Met, Such as
Promptly After the Land Is Certified as Meeting the Requirements of
Comprehensive Environmental Response, Compensation and Liability Act
(CERCLA), and Where the Federal Agency Does Not Retain Continuing
Authority To Control Emissions Associated With the Lands, Facilities,
Title, or Real Properties [40 CFR 93.153(c)(2)(xix)]
Actions by the FAA to transfer or acquire land or equipment that do
not increase the capacity of the airport or change the operational
environment affecting air emissions. Such actions include funding or
approving transfers, acquisitions, or releases by airport sponsors,\19\
or preparing and executing related contracts or written agreements.
Related actions that may be considered exempt from the Rule are:
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\19\ Airport ``sponsors'' are planning agencies, public
agencies, or private airport owners/operators that have the legal
and financial ability to carry out the program requirements for FAA
financial assistance.
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Facilities and equipment purchases.
Land acquisition and relocation assistance.
Land releases for which there is no reasonable expectation
of a change in land use.
Avigation easement acquisition.
Acquisition of an existing privately owned airport
involving only change of ownership.
6. Alterations and Additions of Existing Structures as Specifically
Required by New or Existing Applicable Environmental Legislation or
Environmental Regulations (e.g., Hush Houses for Aircraft Engines * *
*) [40 CFR 93.153(d)(4)]
Actions that are initiated in response to specific environmental
laws and regulations (e.g., energy efficiency, noise abatement
structures and equipment) may be considered exempt from the Rule. These
actions include:
Equipment purchases.
Protective noise barriers.
Required noise mitigation actions including the
installation and operation of hush houses for aircraft and engine
maintenance.
7. Federal Actions Which Are Part of a Continuing Response to an
Emergency or Disaster [40 CFR 93.153(d)(2) and (e)]
Actions in response to emergencies, natural disasters, etc., that
involve overriding concerns for public health and welfare, national
security interests, or foreign policy commitments may be exempt from
general conformity requirements for six months and possibly longer if
justified in writing by the agency.\20\
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\20\ Airports located in nonattainment or maintenance areas with
small regional emission budgets may need to check whether a proposed
exempt action might be regionally significant under 40 CFR Part 93,
Sec. 93.153(i).
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III. Presumed To Conform Project Descriptions and Justifications
The FAA began the process of developing and documenting presumed to
conform actions with a detailed environmental survey of airport
projects. The survey was conducted by all FAA regional offices, which
identified approved airport projects over a recent two-year period that
received a categorical exclusion (CATEX) or Finding of No Significant
Impact (FONSI).\21\ This information was requested only for airports
included in areas designated as nonattainment or maintenance by the
EPA. Information compiled from these surveys described about 600
completed projects at over 100 airports.
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\21\ FAA Order 1050.1E, chapter 3 (CATEX) and Chapter 4, Sec.
406 (FONSI), pursuant to the National Environmental Policy Act.
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The survey information was processed by assigning each airport
planning and development project into one of two categories: (1)
Projects that are exempt from the requirements of the Rule as defined
by 40 CFR 93.153(e); or (2) projects that require an applicability
analysis before being defined as de minimis (i.e., presumed to
conform), according to 40 CFR 93.153(c)(1). Specific information on the
application of these two project categories is presented in Section II
and Section III of this document, respectively.
In the analysis of the survey results, any airport project that
exceeded de minimis levels even once was considered ineligible for the
presumed to conform list. Follow-up communications with airports and
FAA regional representatives helped to clarify terminology and confirm
the reliability of the presumptions. In addition, the FAA performed
detailed worst-case analyses where practicable in areas where project
size and implementation could conceivably result in the exceedance of
de minimis levels.
The airport project survey data and other agency experience in
implementing similar actions taken over recent years provide the
fundamental basis for all of the presumed to conform classifications.
The FAA conducted additional quantitative analyses for specific project
areas, as practicable. These analyses are summarized in Section III,
and include the following: pavement markings; terminal upgrades;
commercial vehicle staging areas; non-runway paving; heating,
ventilation, and air conditioning (HVAC) systems; and low-emission
technology and alternative fuel vehicles.
Based on the survey of airport projects, the additional
evaluations, and quantitative analyses, only those project categories
that were proven to be reliably and consistently de minimis were
classified as presumed to conform. In general, FAA presumed to conform
actions involve maintenance, navigation, construction, safety, security
activities, and new technology and vehicle systems that do not modify
or increase airport capacity or change the operational environment of
the airport in such a way as to increase air emissions above de minimis
thresholds.
Presented below are the airport project descriptions and
justifications for FAA actions that are presumed to conform. There are
fifteen project categories, which are discussed in the following order:
1. Pavement Markings.
2. Pavement Monitoring Systems.
3. Non-Runway Pavement Work.
4. Aircraft Gate Areas on Airside.
5. Lighting Systems.
[[Page 41569]]
6. Terminal and Concourse Upgrades.
7. New HVAC Systems, Upgrades, and Expansions.
8. Airport Security.
9. Airport Safety.
10. Airport Maintenance Facilities.
11. Airport Signage.
12. Commercial Vehicle Staging Areas.
13. Low-Emission Technology and Alternative Fuel Vehicles.
14. Air Traffic Control Activities and Adopting Approach, Departure
and Enroute Procedures for Air Operations.
15. Routine Installation and Operation of Aviation Navigation Aids.
1. Pavement Markings
Airport sponsors apply paint on paved surfaces, such as runways,
taxiways, apron areas, cargo areas, and parking lots to ensure the safe
operation of aircraft during approach and landing and to provide safe
direction for surface vehicles. Most pavement marking projects are
considered routine maintenance activities, qualifying as exempt from
the Rule (see Section II, number 2 of this Notice). These actions are
designed to restore and improve painted surfaces that have deteriorated
due to time, use, and weather.
Federal actions that alter airport use through new pavement
markings are not routine maintenance but are presumed to conform if
such actions do not increase airport capacity or introduce a larger
class of aircraft at the airport. For example, new runway markings for
improved flight procedures from visual flight rules (VFR) to instrument
flight rules (IFR) are presumed to conform if normal traffic flow is
maintained.
Pollutant emissions due to the paint application process are
primarily composed of VOC from the paint, and NOX emitted
from the trucks and application compressors required to prepare the
surface and apply the paint. Emissions of both VOC and NOX
are considered precursors to the development of ozone in the
atmosphere. Therefore, emissions from the application of painted
pavement markings pertain most importantly to ozone nonattainment and
maintenance areas.
A worst-case calculation of emissions was performed based on
equipment and types of paint required to mark a Category III 13,000-
foot runway with an instrument lighting system (ILS) to FAA
specifications. The calculation of emissions included the removal of
existing markings using water pressure through a compressor mounted on
a diesel truck, a pavement sweeper truck to remove debris, the
application of the paint using an air compressor mounted on a diesel
truck, and a small hand sprayer for detailed markings, such as squared
corners. A total of 2,492 gallons of paint (a combination of white,
yellow, and black) were applied to the representative runway at a rate
of 115 square feet per gallon of paint. The trucks transporting the
paint and compressors were assumed to be similar to a single axle,
Class 7 diesel pickup truck.\22\ The sweeper was assumed to be a
regenerative diesel air power model, using a chassis engine and an
auxiliary engine to power the brushes. Manufacturers' Material Safety
Data Sheets were referenced for the VOC emissions factors for the three
colors of latex paint. Emissions factors for the criteria and precursor
pollutants were obtained from the EPA Nonroad Engine and Vehicle
Emission Study-Report.\23\ Load factors and horsepower ratings were
obtained from the EPA Nonroad Engine and Vehicle Emission Study-Report
and Median Life, Annual Activity, and Load Factor Values for Nonroad
Engine Emissions Modeling.\24\
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\22\ The Gross Vehicle Weight Rating (GVWR) system defines a
Class 7 diesel truck as one that can carry 26,001 to 33,000 pounds
of weight on two axles.
\23\ EPA Report 460/3-91-02, November 1991, Nonroad Engine and
Vehicle Emission Study--Report.
\24\ EPA Report NR-005A, December 9, 1997, revised June 15,
1998, Median Life, Annual Activity, and Load Factor Values for
Nonroad Engine Emissions Modeling.
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The maximum volume of paint that could be applied without equaling
or exceeding the de minimis thresholds for any nonattainment and
maintenance classification was calculated.\25\ For instance, an airport
located within an extreme nonattainment area for ozone is limited to
net project emissions of 10 tons of VOC per year. This translates into
an annual application of 21,890 gallons of paint, which also causes
0.21 tons \26\ of NOX emissions. For example, this volume of
paint would mark eight Category III 13,000-foot ILS runways. A volume
of paint on the order of one million gallons is required to cause
emissions of NOX to equal 10 tons per year. Likewise, a
volume of paint on the order of five million to 176 million gallons is
required in order to be sufficient to exceed the de minimis thresholds
for CO, SO2, or PM10. Therefore, VOCs are the
limiting pollutant \27\ for the application of paint at airports and
emissions of NOX, CO, SO2, and PM10
are considerably less. Table III-1 provides the gallon application
limits, which include the use of construction equipment for pavement
markings in nonattainment and maintenance areas.
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\25\ Calculations of maximum paint volume include consideration
of construction equipment.
\26\ Short tons, where one ton equals 2,000 lbs.
\27\ The limiting pollutant is defined as the criteria pollutant
that first exceeds de minimis levels for a given project.
BILLING CODE 4910-13-P
[[Page 41570]]
[GRAPHIC] [TIFF OMITTED] TN30JY07.003
BILLING CODE 4910-13-C
2. Pavement Monitoring Systems
Airports have the option of installing a pavement monitoring system
to indicate when the durability and strength of the pavement needs to
be reinforced. These systems are
[[Page 41571]]
implemented for safety reasons to ensure that an airport's runway,
taxiway, and apron network are sufficiently able to support the weight
of aircraft. Minor construction work is required for the installation
of the monitoring system. Assuming the installation requires the use of
a pickup truck, a utility truck, an excavator, an asphalt paver, a
compactor, and a small generator, construction would have to proceed
continuously (eight hours per day, 20 days per month) for more than a
year (1.1 years) in order to produce emissions near the level of 10
tons of NOX. For the remaining criteria pollutants and
precursors, construction on the order of several years would be
required to approach the de minimis thresholds. Pavement monitoring
systems are installed in less than a week; therefore, project
construction emissions are well below de minimis and presumed to
conform.
3. Non-Runway Pavement Work
Airfield pavement must be constructed to withstand the weight of
aircraft and to produce a firm, stable, smooth, year-round, all-weather
surface. The pavement must be of such quality and thickness that it
will not fail under the weight of aircraft and it must possess
sufficient inherent stability to withstand, without damage, the
abrasive action of aircraft traffic and adverse weather conditions.\28\
These pavement specifications apply to non-runway areas of the airfield
where aircraft operate, including taxiways, apron areas, and gate
areas. The specific pavement requirements are satisfied by applying
rigid pavement consisting of layers of crushed stone bound and pressed
into a smooth surface.
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\28\ FAA AC 150/5320-6D, September 7, 1995, Airport Pavement
Design and Evaluation.
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Most airfield construction projects that are presumed to conform
involve areas of the airfield, generally referred to as apron areas,
that accommodate aircraft for purposes of loading or unloading
passengers or cargo, refueling, or aircraft parking. These types of
airfield projects do not include projects intended to increase airport
capacity or those that are otherwise defined as routine maintenance for
existing apron areas. Taxiway construction projects are limited to
improvements of existing taxiways that will not affect runway use,
increase capacity, enable new aircraft types, or change existing
airfield operations when complete (e.g., new high speed exits would
represent such a change). Construction projects in this category do not
include blasting or substantial ``cut and fill'' activity to level the
terrain or prepare the surface area. If an apron area or taxiway
project does not meet the conditions as described above, a project
emissions inventory of direct and indirect emissions is required to
determine the further applicability of general conformity.
Pollutant emissions due to airfield construction are solely from
the use of construction equipment and are primarily comprised of
NOX, a precursor to ozone development, and CO resulting from
the trucks operated to haul the large amounts of stone and gravel that
must be used to form the support layers for the paving material.
The evaluation of emissions from airfield paving was based on a
representative project in the FAA Eastern Region. The project required
equipment and materials to construct approximately 600,000 square feet
of airfield and concrete shoulder area with an assumed surface design
life of 20 years.\29\ The conservative calculation of emissions
included the preparation of the site allowing for a four-inch
geotextile layer of subgrade soil, a four-inch frost protection layer
of crushed stone, a four-inch sub base layer of finely crushed stone,
an eight-inch base layer of gravel mixed with a stabilizer such as
cement,\30\ and the application of a six-inch layer of Portland cement
concrete.\31\ This type of construction design allows for a total
pavement thickness of 26 inches; the minimum total pavement thickness
for the accommodation of jet aircraft weighing 100,000 pounds or more
is 20 inches.\32\ Also included in the construction emissions inventory
is the installation of a drainage system.
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\29\ As recommended under FAA AC 150/5320-16, October 22, 1995,
Airport Pavement Design for the Boeing 777 Airplane.
\30\ Stabilized base layers as necessary for new pavements
designed to accommodate jet aircraft weighting 100,000 pounds or
more. FAA AC 150/5320-6D, September 7, 1995, Airport Pavement Design
and Evaluation.
\31\ Portland cement is a hydraulic cement made by heating a
mixture of limestone and clay in a kiln and pulverizing the
resulting material.
\32\ FAA AC 150/5320-6D, September 7, 1995, Airport Pavement
Design and Evaluation.
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Emissions factors for construction equipment were obtained from the
EPA's 1991 Nonroad Engine and Vehicle Emission Study--Report.\33\ Load
factors and horsepower ratings for the construction equipment were
obtained from the EPA's 1991 Nonroad Engine and Vehicle Emission
Study--Report and the EPA's 1997 Median Life, Annual Activity, and Load
Factor Values for Nonroad Engine Emissions Modeling.\34\
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\33\ EPA Report 460/3-91-02, November 1991, Nonroad Engine and
Vehicle Emission Study-- Report. Table 2-07 Emission Factors.
\34\ EPA Report NR-005A, December 9, 1997, revised June 15,
1998, Median Life, Annual Activity, and Load Factor Values for
Nonroad Engine Emissions Modeling.
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The maximum allowable square footage of airfield construction was
calculated for each nonattainment and maintenance category. The
analysis showed that NOX was the limiting pollutant for
airfield paving projects and that emissions of VOC, CO, SO2,
and PM10 are considerably less in comparison with
NOX.
Table III-1 provides the area limits for non-runway airfield
construction in nonattainment and maintenance areas. For instance, an
airport located within an area designed as extreme nonattainment for
ozone, which limits net project emissions to the rate of 10 tons per
year of NOX, is limited to constructing 219,368 square feet
(5.04 acres) of apron area, which also causes 0.93 tons of VOC
emissions. As a reference, four acres is generally sufficient to
provide remote or ``hardstand'' (non-gate) parking for three narrow-
body aircraft. Construction of an airfield/apron area on the order of
2.38 million square feet (54.7 acres) causes emissions of VOC up to 10
tons per project, creating emissions of NOX of approximately
109 tons. New airfield construction on the order of 150 to 600 acres
would be required to exceed the de minimis thresholds for CO, SO2
and PM10. Generally speaking, emissions of NOX
are on the order of three times the emissions of CO for these types of
projects and are more than 10 times the emissions of the remaining
criteria pollutants.
4. Aircraft Gate Areas on Airside
Aircraft gate areas refer to the area outside of the terminals and
concourses where jetways are used to link parked aircraft to the
terminal building. Federal actions to improve aircraft gate areas
(e.g., gate electrification) can be part of airport modernization
efforts involving new airline tenants or the introduction of newer and
more efficient technology. Aircraft gate areas involve a wide range of
activities from aircraft loading and unloading of passengers and cargo
to the servicing of aircraft by lavatory, food supply, and maintenance
vehicles.
Upgrades to the aircraft gate area are often needed to accommodate
changing flight schedules and daily activity. The addition or
modification of jetways to existing terminal buildings is typically
done to adjust to changes in air travel demand and airline
requirements. Such projects are intended to improve
[[Page 41572]]
passenger terminal service by reducing passenger queuing and waiting
times. Actions to approve or fund the upgrading of aircraft gate areas
are presumed to conform provided such actions do not increase aircraft
operations or introduce a larger class of aircraft at the airport.
5. Lighting Systems
Airport sponsors may need to install new lighting systems to
maintain proper illumination of roadways, taxiways, runways, and
parking areas. The data from the FAA surveys indicated that airport
upgrading and installing of new lighting systems is done on an as-
needed basis.
Minor mechanical work is required for the installation effort,
followed by electrical work that does not require large off-road
construction equipment. Assuming the installation requires the use of a
pickup truck, a utility truck, an excavator, and a small generator, the
construction will have to proceed continuously (eight hours a day, 20
days a month) for more than 17 months (1.4 years) in order to produce
emissions near the level of 10 tons of NOX. For the
remaining criteria pollutants and precursors, construction on the order
of several years would be required to approach the de minimis
thresholds. Runway and other lighting systems can be installed in less
than two weeks; therefore, project construction emissions are well
below de minimis and presumed to conform.
6. Terminal and Concourse Upgrades
The opportunity to expand or upgrade terminals and concourses for
improving passenger convenience or administrative use typically
involves increasing or renovating the interior terminal space,
including offices, hold rooms, concessions, restrooms, and gate areas.
Terminal and concourse upgrades do not include new or upgraded heating,
ventilation, and air conditioning systems, which are covered under a
separate presumed to conform action (7) because of their
additional operating emissions.
Qualifying projects in this category do not include terminal
replacement projects or have the effect of attracting more passengers.
Nor do they have the effect of increasing the airport's ability to
accommodate additional numbers or types of aircraft or to increase
passenger loading on scheduled flights. Major terminal and/or concourse
expansion projects that are designed to increase passenger usage or to
support increased airfield capacity through new aircraft gates,
runways, taxiways, etc. require an inventory of direct and indirect
emissions to determine the further applicability of general conformity.
Construction vehicles and equipment are the dominant source of
emissions when expanding or upgrading terminals. A conservative
approach to quantifying construction emissions was used to determine
the appropriate limits for this type of activity. The emission limits
are presented in Table III-1 under ``Terminal Upgrades'' according to
the de minimis thresholds.
A proposed terminal expansion project located in the FAA's Southern
Region was used as the representative project. The terminal was
proposed to have an additional footprint of 381,000 square feet. This
proposed project was purposely selected to provide a conservative
estimate of construction emissions normally released from this type
airport improvement activity, even though this presumed to conform
activity is limited to non-capacity enhancing projects. Emissions were
quantified in this case from construction activities, including soil
cement preparation, subgrade preparation, light and heavy demolition,
cement base treatment, installation of the grade aggregate base,
construction of the terminal, light and heavy utility work, and light
and heavy earthwork. In addition, the proposed terminal expansion was
assumed to occur within the same calendar year instead of the proposed
schedule of seven years.
Construction emissions were calculated using prescribed EPA
methodology incorporating the projected construction activity level,
the number of construction vehicles and equipment, and industry-wide
utilization rates. Emission factors for construction vehicles and
equipment were taken from EPA databases for nonroad vehicles and
engines,\35\ and their updates.\36\
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\35\ EPA Report 460/3-91-02, November 1991, Nonroad Engine and
Vehicle Emission Study--Report.
\36\ EPA Report NR-005A, December 9, 1997, revised June 15,
1998, Median Life, Annual Activity, and Load Factor Values for
Nonroad Engine Emissions Modeling.
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A proposed terminal/concourse expansion project is presumed to
conform up to the square foot additions (footprint) of the project as
determined by the most limiting pollutant (see Table III-1). The
prescribed build-out limits per calendar year apply to all components
of the terminal/concourse upgrade project according to the air quality
status of the area in which the project is located.
7. New HVAC Systems, Upgrades, and Expansions
Upgrading and expanding heating, ventilation, and air conditioning
(HVAC) systems are presumed to conform because any emission increases
associated with improvements to airport heating and cooling systems are
generally minor and well below de minimis thresholds.
Heating for airport terminal buildings is typically provided
through a boiler system.\37\ Boilers may be fueled by natural gas, coal
(bituminous, sub-bituminous, or anthracite), No. 5 and No. 6 fuel oil
(residual), No. 2 fuel oil (diesel), culm fuel, and liquefied petroleum
gas (propane or butane). Pollutant emissions due to the operation of
boilers vary with the fuel used. The emission factors for the various
fuels are presented in Table III-2 below.
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\37\ A boiler is an encased vessel that provides a means for
combustion heat to be transferred into water until it becomes steam.
The steam is then used to heat the building through a network of
pipes. When water is boiled into steam its volume increases about
1,600 times, which is an efficient means for transferring heat for a
process. HVACWebTech, Inc.
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A new, upgraded, or expanded boiler system involves the
installation of new equipment to replace or expand the capacity of
existing boiler systems. Boilers can be very large and are sometimes
delivered on flatbed semi-tractor trailer trucks and set in place by a
crane. Table III-3 presents the construction emissions, primarily
NOX and CO, associated with the installation of a large
boiler as described.
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Airport terminals consume energy for heat at a higher rate than
most public buildings. The reasons for this include the open areas
surrounding many airports, heat loss from the movement of people and
baggage in and out of buildings, and the usual 24-hour operation of
facilities. The consumption of energy to generate heat is also
dependent upon the design of the terminal building. For instance, many
airport terminals are designed with exterior glass walls or incorporate
design, art, and architectural treatments that reflect local customs
and community history.\38\ The many variations of airport terminal
design, including geographical location, make it impractical to
identify the ``typical terminal building'' for purposes of determining
total emissions. Therefore, the presumption of conformity could not be
based on the characteristics of the building, but rather on the volume
of fuel consumed.
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\38\ FAA AC 150/5360-13, April 22, 1988, Planning and Design
Guidelines for Airport Terminal Facilities.
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As discussed, emissions resulting from the operation of boilers
depend on the type of fuel powering the boiler system. Emissions from
the use of propane, butane, and natural gas are of concern in ozone
nonattainment and maintenance areas since the primary pollutant from
combustion of these fuels is NOX, a precursor to ozone
formation. Hydrocarbons (HCs) are another precursor to ozone but they
are relatively low for these fuel types in comparison to NOX
emissions. The primary pollutant from the combustion of fuel oil (No. 2
diesel, and No. 5 and No. 6 residual) is SO2, while
particulate matter is the primary pollutant from the combustion of
coal, including culm fuel. Therefore, NOX, SO2,
PM2.5, and PM10 are the most likely limiting
pollutants for the operation of boiler systems at airports.
Table III-4 below presents maximum annual fuel throughput for
heating systems and boilers by fuel type at levels that do not equal or
exceed the de minimis thresholds. The FAA Emissions and Dispersion
Modeling System (EDMS) was used to perform the calculations. EDMS
emission factors are conservatively based on EPA's AP-42 emissions
quantification methodology.\39\
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\39\ FAA, 2007, Emissions and Dispersion Modeling System EDMS
Version 5.0.
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The analysis shows, for example, that an airport located in a
severe nonattainment area for ozone, with a de minimis NOX
threshold of 25 tons per year, could operate new or improved boilers
using up to 5.05 million cubic meters of natural gas annually, which is
sufficient to heat a building of approximately 210,000 square feet.\40\
NOX emissions in a severe ozone nonattainment area would be
limited to 907,000 gallons of No. 6 fuel oil (residual), 2,065,000
gallons of No. 2 fuel oil (diesel), 2,603,000 gallons of propane, 1,515
short tons of bituminous coal, or 2,777 short tons of anthracite coal
on an annual basis.
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\40\ Assuming a 100,000 sq. ft. one-floor building would require
approximately 2.4 million cubic meters of natural gas to heat the
building, annually; based on the industry standard heat value, 1,000
BTU per cubic foot of natural gas, annually [Airtron Heating and Air
Conditioning, Columbus, Ohio].
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The installation, upgrade, or expansion of an airport HVAC system
that requires a permit under new source review (NSR) or prevention of
significant deterioration programs is exempt from a general conformity
determination.\41\ The inclusion of airport boiler installations/
modifications as a presumed to conform activity does not affect
existing or future requirements of Federal, State or local air quality
operating permit programs. Proper compliance with all applicable
environmental regulations must be maintained.
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\41\ 40 CFR part 93, Sec. 93.153(d)(1).
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8. Airport Security
Based on collected project information and additional agency
experience with airport security actions following the events of
September 11, 2001, the FAA has determined that dedicated security-
related airport projects qualify as presumed to conform actions,
including modification of existing terminals with luggage and passenger
scanning devices, addition of camera surveillance, bolstering of
airport security fencing, and reinforcement of airport access control.
In most cases, the installation of security equipment and upgraded
[[Page 41577]]
operations in existing facilities will not result in the generation of
air emissions. If the construction and installation of some dedicated
security projects do cause emissions, these emissions will be minor and
well below the de minimis thresholds.
Security requirements also may dictate that parking spaces close to
terminal buildings be eliminated.\42\ As a result, FAA actions
associated with the expansion of parking facilities to compensate for
lost close-in parking are presumed to conform provided these actions
are limited to a one-for-one replacement of parking capacity.
Generally, the relocation of parking spaces away from the terminal
building will reduce vehicle miles traveled (VMT) on airport property,
resulting in an emissions decrease.
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\42\ FAA Aviation Security Directive issued February 2002.
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It is important to note that this category of presumed to conform
actions is separate from exempt Federal actions under the Rule that are
part of a continuing response to an emergency or disaster.\43\ Agency
use of the emergency exemption is limited in time and must involve
overriding concerns for public health and welfare, national security
interests, and foreign policy commitments.\44\
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\43\ 40 CFR Part 93, Sec. 93.153(e).
\44\ Ibid.
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9. Airport Safety
Airport projects relating to airport safety include actions
specific to the Runway Safety Area (RSA). FAA regulations specify the
requirements for a RSA, which is defined as the surface area that
surrounds and extends beyond the runway ends that is required for
reducing the risk of damage to airplanes in the event of an undershoot,
overshoot, or excursion from the runway.\45\ RSA improvements are
presumed to conform unless a new road or the relocation of a road is
required.
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\45\ FAA AC 150/5300-13, September 29, 1989, Airport Design.
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In addition to a safe airfield, airport projects to build, expand,
replace, upgrade, or equip a required Aircraft Rescue and Firefighting
Facility (ARFF) are presumed to conform. These facilities are
relatively small airport projects and must be provided by the airport
to ensure airport and passenger safety. Airports must meet ARFF
requirements as specified under 14 CFR 139.317, and are responsible for
upgrading an ARFF if there is an increase in the average daily
departures or the length of an air carrier aircraft.\46\
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\46\ Per index under 14 CFR Part 139, Sec. 139.319(a)
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10. Airport Maintenance Facilities
Airport maintenance facilities house the equipment necessary to
run, service, and maintain the airport environs. These facilities can
include vehicle service centers, fueling stations, and storage areas
for snow removal and maintenance equipment. FAA actions associated with
upgrading airport-owned maintenance facilities are presumed to conform
based on the fact that these facilities typically require only minor
construction. However, the installation or upgrading of aircraft
maintenance facilities (typically owned by an airline or charter
company) that are used to paint or maintain aircraft at an airport are
not considered presumed to conform because aircraft maintenance
facilities may cause an increase in flights to meet maintenance
schedules.
11. Airport Signage
Airport sponsors place signs throughout the airport property to
direct passengers, employees, and vendors to terminals, parking lots,
rental car areas, maintenance areas, etc. In addition, airports provide
a network of signs to direct aircraft and vehicles on the airfield.
Airport signage is often electrified for illumination at night and for
other times of limited visibility. In general, airport signage
installation can be completed in a matter of days or weeks. It would
require more than a year of continuous installation to exceed the 25-
ton threshold for NOX. Therefore, airport signage
installation projects are presumed to conformed.
12. Commercial Vehicle Staging Areas
Commercial vehicle staging areas at airports serve as temporary
holding areas for taxicabs, limousines, and other commercial vehicles.
Such areas reduce the need to idle at the terminal curb front and help
to decongest the terminal roadways. Airports that employ commercial
vehicle staging areas may enforce specific idling restrictions or
engine-off mandates to further reduce air quality impacts. Generally,
the use of commercial vehicle staging areas is an emissions reduction
strategy because the alternative inherently creates more emissions from
increased traffic and congestion at the terminal.
A Federal action to develop a commercial vehicle staging area for
purposes of relieving airport traffic congestion is presumed to conform
based on the criteria provided in Table III-1 for a ``Commercial
Vehicle Staging Area.'' Providing a commercial vehicle staging area
does not cause an increase in the volume of vehicles on regional
roadways and impacts air quality only through the use of construction
equipment to pave the staging area. Construction emissions are
primarily comprised of NOX and CO.
The quantity of emissions associated with the construction of an
asphalt taxicab staging area was based on a construction design for a
regional asphalt roadway. The calculation of emissions included
activities such as excavation, preparation of the subgrade, adding a
base layer of stone, fine grading, and paving. The paving process
included the application of a tack coat, wearing course, and the final
seal coat. The type and use of construction equipment was determined
based on information obtained from the R.S. Means' Means Building
Construction Cost Data, and the State of Ohio Department of
Transportation's Manual of Procedures for Flexible Pavement
Construction and Pavement Design and Rehabilitation Manual. Rated
horsepower and load factors for each construction unit was obtained
from the EPA's Nonroad Engine and Vehicle Emission Study-Report and
Median Life, Annual Activity, and Load Factor Values for Nonroad Engine
Emissions Modeling, and the Caterpillar Performance Handbook.
Emission factors were obtained from the EPA's Nonroad Engine and
Vehicle Emission Study-Report.
The acreage that could be paved without equaling or exceeding the
de minimis thresholds for each applicable nonattainment or maintenance
category was calculated and summarized in Table III-1. For instance, an
airport located within an area designated as severe nonattainment for
ozone, which limits net project emissions to an annual rate of 25 tons
of NOX, is limited to a commercial vehicle staging area of
about 13 acres, or 561,584 square feet, which results in 2.35 tons of
VOC emissions. Paving of approximately 137 acres is required to cause
emissions of VOC of nearly 25 tons, as established for a severe
nonattainment area for ozone. In order to approach the 100 ton de
minimis thresholds for other criteria pollutants, paving areas of
approximately 140 acres would be required for CO, 556 acres for
SO2, and more than 595 acres for PM10. Therefore,
NOX is the limiting pollutant for paving projects at
airports and emissions of VOC, CO, SO2, and PM10
are considerably less in comparison to NOX.
13. Low-Emission Technology and Alternative Fuel Vehicles
A growing number of airports are interested in new technology and
vehicle systems to reduce stationary and mobile emissions. Based on
agency and
[[Page 41578]]
airport low-emission programs over the past several years, which
provide extensive data and documentation to verify the emission
reduction benefits of new low-emission technology, these activities are
presumed to conform.
Activities that are presumed to conform include the replacement,
substitution, or conversion of conventional fuel vehicles (gasoline,
diesel) to vehicles using alternative or clean conventional fuel
technology. Qualified activities also encompass airport low-emission
infrastructure improvements and the use of refueling or recharging
stations needed to service airport low-emission vehicles.
All low-emission activities funded through the FAA Voluntary
Airport Low Emission Program (VALE) or that are required as part of
environmental mitigation are presumed to conform.\47\ The VALE program
requires that vehicles purchased under the program meet specific low-
emission standards and that these vehicles and other program equipment
remain at the airport for their useful life.
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\47\ FAA Order 5100.38C, Airport Improvement Program Handbook,
June 2005, Sec. Sec. 580, 585.
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14. Air Traffic Control Activities and Adopting Approach, Departure and
Enroute Procedures for Air Operations
The preamble to the General Conformity Rule \48\ states that:
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\48\ 58 Fed. Reg. 63229 (Nov. 30, 1993).
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``In order to illustrate and clarify that the de minimis levels
exempt certain types of Federal actions, several de minimis exemptions
are listed in 51.853(c)(2). There are too many Federal actions that are
de minimis to completely list in either the rule or this preamble.''
As an illustration of exempt actions, EPA states in the preamble
that ``Air traffic control activities and adopting approach, departure
and enroute procedures for air operations'' are among other actions
that are de minimis (preamble, p. 63229, I(2)) and should be exempt
from the Rule. Because air traffic control activities are cited in the
preamble but not in the Rule itself, the FAA believes that it is
prudent to document these activities as presumed to conform.
Air traffic control activities are defined as actions that promote
the safe, orderly, and expeditious flow of aircraft traffic, including
airport, approach, departure, and enroute air traffic control. Airspace
and air traffic actions (e.g., changes in routes, flight patterns, and
arrival and departure procedures) are implemented to enhance safety and
increase the efficient use of airspace by reducing congestion,
balancing controller workload, and improving coordination between
controllers handling existing air traffic, among other things.
Project-related aircraft emissions released into the atmosphere
above the inversion base for pollutant containment, commonly referred
to as the ``mixing height,'' (generally 3,000 ft. above ground level)
do not have an effect on pollution concentrations at ground
level.49 50 Therefore, air traffic control actions above the
mixing height are presumed to conform.
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\49\ EPA Report, Procedures for Emission Inventory Preparation,
Volume IV: Mobile Sources [420R-92-009], section 5.2.2., 1992.
\50\ Realistic Mixing Depths for Above Ground Aircraft
Emissions, Journal of the Air Pollution Control Association, Vol.
25, No. 10, Howard M. Segal, Boeing, 1975.
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In addition, the results of FAA research on mixing heights indicate
that changes in air traffic procedures above 1,500 ft. AGL and below
the mixing height would have little if any effect on emissions and
ground concentrations.\51