RAPID/Roadmap/15-ID-b

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RAPID

Regulatory and Permitting Information Desktop Toolkit

Idaho Air Quality Permit - Tier II Operating Permit (15-ID-b)

Tier II Operating Permits are issued to facilities or stationary sources when the Idaho Department of Environmental Quality (DEQ) determines an air permit is necessary to comply with applicable rules or when a developer has requested an air permit. Most commonly, the DEQ issues Tier II Operating Permits to developers who have requested the permit in order to establish synthetic minor emission limits. Tier II Operating Permits expire within five years, at which point the developer must submit an application to renew the permit.


Air Quality Permit - Tier II Operating Permit Process

15-ID-b.1 to 15-ID-b.2 – Does the Stationary Source Require a Tier II Operating Permit

Tier II Operating Permit requirements are found in IDAPA 58.01.01.401. Tier II Operating Permits are required for a stationary source or facility that is not subject to Sections 300 through 399 with a permit to construct which establishes any emission standard different from those in these rules or has an annual actual mercury emissions in excess of sixty-two (62) pounds. Fugitive emissions shall not be included in a determination of the actual mercury emissions.

Additionally, the developer may request a Tier II Operating Permit or the Director may require or revise a Tier II Operating Permit when the Director determines that:

  • Emission rates reductions are necessary to attain or maintain any ambient air quality standard or applicable prevention of significant deterioration (PSD) increment; or
  • Specific emissions standards or requirements on operation or maintenance are necessary to ensure compliance with any applicable emission standard or rule.

15-ID-b.3 – Tier II Operating Permit Application

The owner or operator of the stationary source or facility shall submit a Tier II permit application for review and approval by the Department, no later than twelve (12) months after becoming subject to IDAPA 58.01.01.401.02.a.ii, that includes an MBACT analysis for all sources that emit mercury. A determination of applicability under Subsection 401.02 must be based upon best available information. The developer must include an MBACT analysis for review and approval by the Department in a Tier II renewal application for any mercury emitting source not otherwise subject to MBACT. Under IDAPA 58.01.01.402 the Tier II Operating Permit Application should include:

  • Site information, plans, descriptions, specifications, and drawings showing the design of the stationary source or facility;
  • the nature and amount of emissions;
  • how the stationary source or facility will be operated and controlled;
  • all estimates of ambient concentrations; and
  • any additional information required by the Department to make the determination.

15-ID-b.4 to 15-ID-b.5 – Review Application Materials for Completeness

Within thirty days of receiving the application, the DEQ reviews the application for completeness and accepts the application if complete.

15-ID-b.6 – Review Application Materials

The DEQ reviews the application materials to ensure the stationary source or facility complies with all applicable federal, state, and local emissions standards and that the source will not cause or significantly contribute to a violation of any ambient air quality standard.

15-ID-b.7 - Tier II Operating Permit

If the DEQ approves the permit application, the DEQ issues the developer a Tier II Operating Permit within 60 days of accepting the application as complete.

15-ID-b.8 – Send Copy of Permit to EPA

The DEQ sends a copy of the Permit to the EPA for recordation.




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