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Regulators weigh in on Arizona power plant upgrades

PHOENIX — The Arizona Corporation Commission is criticizing recent actions
by the U.S. Environmental Protection agency to clean up the state’s power

The commission voted Tuesday to file an amicus brief in federal appeals court
supporting the state’s challenge to pollution control upgrades at three
coal-fired power plants.

The EPA partially approved Arizona’s air quality plan for the Cholla, Coronado
and Apache generating stations. But the agency set its own limits for nitrogen
oxide emissions and gave the plants’ operators five years to comply.

The commission said the EPA’s decision doesn’t strike the right balance of
environmental stewardship and protection of Arizona’s economy.

The commission said it also will weigh in against a proposal for pollution
control upgrades at the Navajo Generating Station.

Public comments are due Aug.


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