Group submits comments on EPA plan to cut emissions at Arizona power plant

A group established to identify emission reduction alternatives for the Navajo Generating Station has submitted comments supporting the Environmental Protection Agency’s (EPA) supplemental best available retrofit technology (BART) proposal for the Arizona power plant.

In October, EPA published a supplemental proposal that incorporates in large part a BART alternative that was submitted by the group three months earlier. EPA requested public input on the supplemental proposal, as well as its original proposal, held a series of public hearings and established January 6 as the deadline for public comment.

The group includes the Central Arizona Water Conservation District, the Environmental Defense Fund, the Gila River Indian Community, the Navajo Nation, Salt River Project (SRP), the U.S. Department of the Interior and Western Resource Advocates.

The group appreciates that EPA recognized the significance of the group agreement and the collaborative efforts undertaken by the stakeholders to reach an approach that carefully balances a variety of environmental and economic considerations.

The group supports the EPA’s proposed adoption of the group BART Alternative, and recommends EPA adopt a final BART rule for NGS that is based on its October 2013 Supplemental Proposal, with the minor modifications described in their comments. The group will continue to work together on these important issues.

NGS is a 2,250 MW coal-fired power plant located just outside of Page on the Navajo Reservation. The plant is operated by SRP. The other participants in NGS include the U.S. Bureau of Reclamation, Arizona Public Service Co., Los Angeles Department of Water and Power, Tucson Electric Power Co. (TEP) and NV Energy.

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The Clarion Energy Content Team is made up of editors from various publications, including POWERGRID International, Power Engineering, Renewable Energy World, Hydro Review, Smart Energy International, and Power Engineering International. Contact the content lead for this publication at

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