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USAF.
A1.1 Air Force (AF) Form 813: Preliminary Environmental Impact Analysis
AF Form 813 is the first document prepared for USAF actions. The form is prepared to aid in the
development of the assessment, providing information on the proposed action and its
alternatives, purpose, and potential environmental effects. The current AF Form 813 consolidates
former AF Forms 813 and 814. Certain sections of the document are prepared by the proponent
and the Environmental Planning Function. A copy of AF Form 813 is provided in Attachment A-
1.
A1.2 Environmental Assessment (EA)
An EA is an environmental document that may be prepared for a Federal agency action. It is a
concise document with the purpose of:
1) Briefly providing sufficient evidence and analysis for determining whether to prepare an
environmental impact statement or finding of no significant impact;
2) Aiding an agency’s compliance with NEPA when no environmental impact statement is
necessary, identifying better alternatives and mitigation measures; and
3) Facilitating preparation of an environmental impact statement when one is necessary.
If from initial review the proposed action can not be classified as a categorical exclusion or a
decision has not been made to directly prepare an Environmental Impact Statement (EIS), an EA
is prepared. If it is concluded that the action will have no significant impacts on the environment,
the Federal agency prepares a Finding Of No Significant Impact (FONSI). Conversely, if the
action is determined to have significant impacts on the environment, the Federal agency prepares
an Environmental Impact Statement. In addition, some agencies may expressly provide page
guidelines. A detailed description of the EA process and content are provided in FAA Order
1050.1: Policies and Procedures for Considering Environmental Impacts (Reference 62) and
5050.4: Airport Environmental Handbook (Reference 63) and in USAF Instruction 32-7061: The
Environmental Impact Analysis Process (EIAP) (Reference 41) and the Environmental Impact
Analysis Process (EIAP): Desk Reference (Reference 43) for air base actions.
A-6
A1.3 Finding Of No Significant Impact (FONSI)
A FONSI is a document prepared for a Federal agency action that will not have a significant
effect on the environment. In the document, the Federal agency briefly explains the reasons why
an action will not have a significant effect on the environment and, therefore, preparation of an
Environmental Impact Statement is not required. In addition to this statement, the FONSI must
include, summarize, or attach and incorporate by reference the Environmental Assessment. A
detailed description of the FONSI content is provided in FAA Order 1050.1 and 5050.4, and in
USAF Instruction 32-7061 and the EIAP: Desk Reference for air bases.
A1.4 Environmental Impact Statement (EIS)
An EIS is a detailed document required of all Federal actions likely to have significant effects on
the environment. If the action will have significant environmental impacts, a Federal agency may
decide to directly prepare an EIS for an action (without first preparing an Environmental
Assessment). A detailed discussion of the EIS content and process are contained in FAA Order
1050.1 and 5050.4, and in USAF Instruction 32-7061 and the EIAP: Desk Reference for air
bases.
A1.5 Record Of Decision (ROD)
A ROD is a concise public document that a Federal agency is required to prepare, stating the
final decision on a proposed major Federal action and the alternatives considered by the Federal
agency. A ROD can be used to set forth the conditions required for the approval of the action and
to state mitigation measures. A ROD is a separate document that must be made available to the
public through appropriate public notice following the completion of the Environmental Impact
Statement. An overview of the ROD process is provided in FAA Order 1050.1 and 5050.4, and
the USAF Instruction 32-7061 and the EIAP: Desk Reference for air bases.
A1.6 Conformity Determination
Federal Aviation Administration and Air Force actions fall mostly under the General Conformity
Rule (Reference 7). A conformity determination states if and how an action conforms to the
applicable State Implementation Plan (SIP). Conformity to a SIP is defined as demonstrating
consistency with the SIP’s “purpose of eliminating or reducing the severity and number of
violations of the national ambient air quality standards and achieving expeditious attainment of
such standards.”
A 30-day notice that describes the proposed action and the Federal agency’s draft Conformity
Determination on the action must be provided to required recipients and placed by prominent
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