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  • TEP PSD Permit

    TEP Irvington Tucson Electric Power Company (TEP) operates its Irvington Generating Station (IGS) under Class I Air Quality Operating Permit No. 1052 issued by the Pima County Department of Environmental Quality (PDEQ). IGS consists mainly of two steam boiler generating units, specifically, Unit 1, Unit 2, Unit 3, and ten reciprocating internal combustion engines.



    August 27, 2022 - Significant Permit Revision

    Date Received

    Document Title


    • 04/15/2022
    • 03/14/2022

    • 08/27/2021
    Technical Support Document
    Permit Issuance Letter
    Response to Comments
    Public Hearing Presentation
    Public Notice
    Proposed Permit
    Proposed TSD
    Proposed SIP Revision
    Significant Permit Revision Application

    March 30, 2021 - Minor Permit Revision

    Date Received

    Document Title

    • 05/24/2021

    • 03/30/2021
    EPA Review Letter
    Draft Permit
    Draft Technical Support Document

    November 5, 2020 - Significant Permit Revision

    Date Received

    Document Title

    • 02/23/2021
    • 02/23/2021
    • 01/04/2021
    • 11/05/2020
    Existing TEP Class I Permit Information
    Permit Issuance Letter
    Public Notice
    Significant Permit Revision Application

    December 13, 2018 - Facility Change

    Decommissioning of Steam Generating Units Stationary Combustion Turbines Units 1 and 2

    Facility Change Notification
    Dispersion Modeling Report - Rev 3
    Pluvue II - Rev 1

    TEP PSD Authorization

    Correction of Federal Register

    Federal Register Notice
    PSD Permit Effective Letter

    EAB December 3, 2018 (Order Denying Review)

    Environmental Appeals Board (EAB)

    EAB Dockets

    2018-03-29 Sierra Club TEP RICE Comments Exhibit 1 Petra Pless CV Exhibit 2 KDEH Lacey Randall Final Permit
    Exhibit 3 Tradewind Lacey Randall Application
    Exhibit 4 CARB BACT Determination for Neo California
    Exhibit 5 SCAQMD BACT Neo California
    Exhibit 6 GAO Report
    Exhibit 7 EPA Letter to Broadbent, BAAQMD
    Exhibit 8 EPA Letter to Rhodes, FDEP
    Exhibit 9 Jahnke
    Exhibit 10 NCUAQMD Permit for Humboldt Bay
    Exhibit 11 FLAG Guidance
    Exhibit 12 EPA Guidance for PM2.5 Modeling
    Exhibit 13 EPA NAAQS Table for criteria Air Pollutants
    Operating Manual for NOx Control Device

    August 8, 2018 - Air Quality Permit Information

    TEP PSD Air Quality Permit #1052

    TEP PSD Technical Support Document (TSD)

    Pima County Responses to Public Comment

    Permit Issuance Decision Letter

    Compliance Assurance Monitoring Plan for Carbon Monoxide

    Administrative Records to Support TSD

    Pencor Masada (May 2001) Citgo - Petition Order (May 2009)

    Cash Creek - Petition Order (June 2012)

    Pio Pico Energy - EAB Final Order (Aug 2013)

    Hu Honua - Petition Order (Feb 2014) Yuhuang - Order Denying Petition for Objection to Permit (April 2018)

    California Power Holdings - Permit to Operate

    The information below provides a chronological list of the documentation related to this complex process from the projects inception to its conclusion. PDEQ is utilizing this repository webpage to provide easy access to the documents for the public comment period and to facilitate an open dialogue and the sharing of information with all interested parties.

    August 1, 2017 - Permit Application Documentation

    TEP proposed with this permit application to modernize the station by replacing two 1950's era steam units (i.e., Units 1 and 2) with ten high-efficiency, fast-responding, state-of-the-art reciprocating internal combustion engines (RICE), each having a generating capacity of nearly 19 MW.  The RICE project expects to trigger a major modification for CO, PM2.5/PM10 and VOCs subject to the Prevention of Significant Deterioration (PSD) permitting. As such, air quality dispersion modeling analysis is required to demonstrate that new emissions from the major modification, will not cause or contribute to a violation of any National Ambient Air Quality Standards (NAAQS).

    August 1, 2017 Permit Application Documentation

    Date Received

    Document Title

    • 06/23/2017
    • 08/1/2017
    • 08/1/2017
    • 08/1/2017
    • 08/11/2017
    • 08/23/2017
    • 08/28/2017
    • 08/31/2017
    • 09/1/2017
    • 09/8/2017
    • 09/12/2017
    • 09/12/2017
    • 09/18/2017
    • 09/19/2017
    • 09/21/2017
    • 09/26/2017
    • 09/27/2017
    • 09/28/2017
    • 09/29/2017
    • 09/29/2017
    • 10/9/2017
    • 10/9/2017
    • 10/9/2017
    • 10/9/2017
    • 10/12/2017
    • 10/19/2017
    • 10/19/2017
    • 12/19/2017
    • 12/22/2017
    • 02/01/2018
    • 02/05/2018
    • 02/08/2018
    • 02/09/2018
    • 02/23/2018
    • 02/26/2018
    • 03/07/2018
    • 07/02/2018
    • 07/05/2018
    Dispersion Modeling Protocol
    Permit Application
    Emission Calculations (Permit Application Appendix B)
    Impact Analysis (Permit Application Appendix C)
    Endangered Species Act Analysis
    Administrative Completeness Checklist
    Cultural Resources Inventory and Historic Building Assessment (TEP Irvington Campus)
    Pima County Office of Sustainability and Conservation Assessment Response
    Conditional Approval of Modeling Protocol
    Technical Review Letter Final to TEP
    Cultural Resources Assessment
    City of Tucson Historic Preservation Office Assessment Response
    U.S Fish and Wildlife Section 7 Analysis Response
    TEP Response to PDEQ Tech Review
    Vendor Emissions Specifications
    Technical Review Letter #2
    TEP IGS Modeling Addendum
    SCR System Specification
    TEP Response to Technical Review Letter #2
    Attachment - 47X
    Attachment - 49P
    Attachment - Plains-End
    TEP IGS Modeling Addendum
    Addendum Supplement
    Technical Review Letter #3
    TEP Response to Technical Review Letter #3
    SCR Operation Manual
    Stack Profile for Model
    NPS Response to Modeling Protocol
    Selective Catalytic Reduction Injection Specification
    USEPA Approval of Modeling Procedures
    Sundt RICE Project Revised Application
    TEP Sundt Modeling Protocol
    TEP IGS Modeling Report
    Public Comment Period
    NOx Process Monitor Information
    NPS Review and Response to Visibility Model and Permit
    Environmental Justice Analysis for IGS
    Proposed Permit
    Proposed TSD
    TEP Voluntary Proposed NOx Limit
    Extended Public Comment Period and Additional Public Hearing
    Response to Comments Timeline Clarification
    Estimated Flue Gas Emission Rates & Expected Emissions During Start-Up Rev 1
    Estimated Flue Gas Emission Rates & Expected Emissions During Start-Up Rev 2
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