NAA Permit

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Non Attainment Area (NAA) Permits

NAA Applicability

There are two stationary source definitions for nonattainment major source permitting: a "plantwide" definition and a "dual" source definition. The permit application must use, and be reviewed according to, whichever of the two definitions is used to define a stationary source in the applicable SIP.

The requirements of the NAA regulations have applicability to:

Plantwide Stationary Source Definition
- New Major Stationary Source
  - Any source type that belongs to a list of 28 Source Grouping Categories
    - Has the potential to emit 100 or more tons of a regulated pollutant per year
  - Any source type not listed in the 28 Source Grouping Categories
    - Emits 250 or more tons of a regulated pollutant per year
  - Includes all pollutant emitting activities belonging to the same industrial grouping
  - Located on contiguous or adjacent properties
  - Under common control
- Major Modification of a Stationary Source
  - Increases net emissions of a criteria pollutant for which the area has been designated non attainment
    - Physical change
    - Change in the method of operation
Dual Source Definition
- A Building, Structure, or Facility
  - Belongs to the same industrial grouping code
    - Same 2 digit Standard Industrial Classification (SIC) code
  - Located on one or more adjacent properties
  - Under the control of the same owner or operator
- An Installation
  - An identifiable piece of process equipment
Affected Sources Located in a Non Attainment Area
- An area formally designated as non attainment for a criteria pollutant
  - Criteria pollutants - any air pollutant for which a national ambient air standard exists
Sources that emit Pollutants that are subject to NAA
- A source's location may be attainment or unclassified for some pollutants and non attainment for others.
  - If the proposed project only emits pollutants for which the area has been designated attainment or unclassified, NAA would not apply.
- New Major Stationary Sources
  - Emits, or potential to emit, major amounts of a criteria pollutant for which the area has been designated non attainment.
- Major Modifications to Stationary Sources
  - Plantwide Definition - Results in a significant net increase of a criteria pollutant for which the area has been designated non attainment.
  - Dual Definition - Results in a major increase in a pollutant
    - for which the source is major
    - for which the area has been designated non attainment

No new source or modification subject to NAA regulation may be constructed without a permit.