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Pacific Southwest, Region 9

Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations

Air Actions, Arizona

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Regional Haze in Arizona

Actions on this page:

Regional Haze Section 308

Phase 3

Phase 2

Phase 1

Regional Haze Section 309

Regional Haze Section 308

March 16, 2017: Arizona Regional Haze SIP Revision and Withdrawal of FIP for Cholla Power Plant 

This final action approves a source-specific Arizona Regional Haze SIP Revision for the Cholla Power Plant and withdraws the FIP provisions that applied to this facility.

June 30, 2016 - Arizona Regional Haze State Implementation Plan (SIP) Revision for Cholla Generating Station

This action proposes to approve a revision to the Arizona Regional Haze SIP and rescind the applicable provisions of the Arizona Regional Haze Federal Implementation Plan for Cholla Generating Station. The Regional Haze Program's goal is to reduce emissions of pollutants that impair visibility at protected national parks and wilderness areas, known as Class I areas.

Contact Information

Anita Lee (lee.anita@epa.gov)
(415) 972-3958


November 4, 2016 - Arizona Regional Haze Federal Implementation Plan (FIP) Revision 

This action revises the Arizona Regional Haze FIP for Phoenix Cement Company (PCC) Clarkdale Plant and the CalPortland Cement (CPC) Rillito Plant. The Regional Haze Program's goal is to reduce emissions of pollutants that impair visibility at protected national parks and wilderness areas, known as Class I areas.

Contact Information

Krishna Viswanathan (viswanathan.krishna@epa.gov)
(520) 999-7880


June 15, 2016 - Arizona Regional Haze Federal Implementation Plan (FIP) Revision for Phoenix Cement Company (PCC) and CalPortland Cement (CPC) 

This action proposes to revise the Arizona Regional Haze FIP for the Phoenix Cement Company (PCC) Clarkdale Plant and the CalPortland Cement (CPC) Rillito Plant. The Regional Haze Program's goal is to reduce emissions of pollutants that impair visibility at protected national parks and wilderness areas, known as Class I areas.

Contact Information

Krishna Viswanathan (viswanathan.krishna@epa.gov)
(520) 999-7880


March 29, 2016 - Arizona Regional Haze Federal Implementation Plan (FIP) Revision for Coronado Generating Station

This action revises the Arizona Regional Haze FIP for the Coronado Generating Station. The Regional Haze Program's goal is to reduce emissions of pollutants that impair visibility at protected national parks and wilderness areas, known as Class I areas.

Contact Information

Krishna Viswanathan (viswanathan.krishna@epa.gov)
(520) 999-7880

March 13, 2015 - Arizona Regional Haze Federal Implementation Plan (FIP) for Coronado Generating Station

EPA is proposing to revise the Arizona Regional Haze FIP for Coronado Generating Station. The Regional Haze Program's goal is to reduce emissions of pollutants that impair visibility at protected national parks and wilderness areas, known as Class I areas. There will be a 45-day comment period after publication in the Federal Register.

Contact Information

Krishna Viswanathan (viswanathan.krishna@epa.gov)
(520) 999-7880


February 27, 2015: Arizona Regional Haze SIP and FIP for Apache Generating Station

This final action approves a revision to the Arizona Regional Haze SIP and withdraws the corresponding part of the existing FIP for Apache Generating Station. The Regional Haze Program’s goal is to reduce emissions of pollutants that impair visibility at protected national parks and wilderness areas, known as Class I areas.

Contact Information

Krishna Viswanathan (viswanathan.krishna@epa.gov)
(520) 999-7880

September 2014: Revision to the Arizona Regional Haze SIP and withdrawal of the existing FIP for Apache Generating Station

This action proposes to approve a revision to the Arizona Regional Haze SIP and withdraw the existing FIP for Apache Generating Station. The Regional Haze Program's goal is to reduce emissions of pollutants that impair visibility at protected national parks and wilderness areas, known as Class I areas.

Contact Information

Krishna Viswanathan (viswanathan.krishna@epa.gov)
(520) 999-7880


January 2015: Revisions to Arizona Regional Haze Federal Implementation Plan

EPA proposed to revise provisions of the Arizona Regional Haze Federal Implementation Plan applicable to the Nelson Lime Plant. The Regional Haze Program's goal is to reduce emissions of pollutants that impair visibility at protected national parks and wilderness areas, known as Class I areas. EPA is providing a 45 day public comment period from the date of publication in the Federal Register. Comments are due on or before February 27, 2015.

Contact Information

Krishna Viswanathan (viswanathan.krishna@epa.gov)
(520) 999-7880


June 2014: Arizona Section 308 Regional Haze Federal Implementation Plan (FIP)

June 27, 2014 - This action promulgates federal requirements for those elements of the Arizona Regional Haze State Implementation Plan (SIP) that EPA disapproved on July 30, 2013. The Regional Haze Program’s goal is to reduce emissions of pollutants that impair visibility at protected national parks and wilderness areas, known as Class I areas. 

January 2014: Arizona Section 308 Regional Haze Federal Implementation Plan (FIP) Proposal

January 27, 2014 - This action proposes to promulgate federal requirements for those elements of the Arizona Regional Haze State Implementation Plan that EPA disapproved on July 30, 2013. The Regional Haze Program's goal is to reduce emissions of pollutants that impair visibility at protected national parks and wilderness areas, known as Class I areas. EPA will accept public comments for 45 days after publication in the Federal Register.

Contact Information

Krishna Viswanathan (viswanathan.krishna@epa.gov)
(520) 999-7880


July 2013: Arizona Section 308 Regional Haze State Implementation Plan (SIP): Partial Approval/Partial Disapproval of Arizona's Regional Haze SIP

July 15, 2013 - EPA approved partially and disapproved partially the remaining portions of Arizona's Regional Haze State Implementation Plan (SIP). The Regional Haze Program's goal is to reduce emissions of pollutants that impair visibility at protected national parks and wilderness areas, known as Class I areas.

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May 2013: Arizona Section 308 Regional Haze State Implementation Plan (SIP): Proposed Partial Approval/Partial Disapproval of Arizona’s Regional Haze SIP

May 9, 2013 - This proposal modifies EPA’s positions on Arizona's Regional Haze State Implementation Plan (SIP) as laid out in our previous proposal, published in the Federal Register on December 21, 2013. The Regional Haze Program’s goal is to reduce emissions of pollutants that impair visibility at protected national parks and wilderness areas, known as Class I areas.

December 2012: Arizona Section 308 Regional Haze State Implementation Plan (SIP) - Proposed Partial Approval/Partial Disapproval of Remaining Portions of Arizona's Regional Haze State Implementation Plan (SIP)

December 7, 2012 - EPA proposes to approve partially and disapprove partially the remaining portions of Arizona's Regional Haze State Implementation Plan (SIP). The Regional Haze Program's goal is to reduce emissions of pollutants that impair visibility at protected national parks and wilderness areas, known as Class I areas.

Contact Information

Krishna Viswanathan (viswanathan.krishna@epa.gov)
(520) 999-7880


November 2012: Arizona Section 309 Regional Haze State Implementation Plan (SIP) - Partial Approval/Partial Disapproval of State Plan and Federal Plan

November 15, 2012 - EPA is taking final action to approve in part and disapprove in part Arizona's plan to control air pollution at Apache Generating Station, Cholla Power Plant and Coronado Generating Station. EPA is also promulgating a Federal Implementation Plan to replace certain elements of the State Implementation Plan. These pollutants contribute to visibility impairment in protected national parks and wilderness areas, known as Class 1 areas, in Arizona and neighboring States.

July 2012: Arizona Regional Haze SIP - Proposed Partial Approval/Partial Disapproval and Partial FIP

July 2, 2012 - EPA is proposing to partially approve and partially disapprove Arizona's plan to control air pollution at Cholla power plant, Apache Generating Station and Coronado Generating Station. EPA is also promulgating a Federal Implementation Plan for certain elements of the SIP. These pollutants contribute to visibility impairment in protected national parks and wilderness areas, known as Class 1 areas, in Arizona and neighboring States.

Contact Information

Krishna Viswanathan (viswanathan.krishna@epa.gov)
(520) 999-7880

Regional Haze Section 309

July 2013: Arizona Section 309 Regional Haze State Implementation Plan (SIP) - Partial Disapproval; Final Rule

July 26, 2013: EPA finalized a partial disapproval of Arizona’s section 309 state implementation plan (SIP) to implement the regional haze program.

January 2013: Arizona Section 309 Regional Haze State Implementation Plan (SIP) - Partial Disapproval

January 23, 2013: EPA proposed to disapprove in part Arizona’s section 309 State Implementation Plan (SIP) to implement the regional haze program addressing visibility impairment in mandatory Class I areas covered by the requirements related to the Grand Canyon Visibility Transport Commission, an optional program for certain western states.

Contact Information

Krishna Viswanathan (viswanathan.krishna@epa.gov)
(520) 999-7880


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