High winds that sent huge dust clouds swirling last week caused Pima County to exceed federal air-quality standards for the first time in nearly four years, county officials said.
The following editorial appeared Monday in the Washington Post:
The following editorial appeared in Sunday's Washington Post:
The water table beneath three Arizona coal ash landfills lies 300 to 900 feet deep. The ground is tightly packed clay. The sites lie miles from populated areas.
For more than three years, the U.S. Environmental Protection Agency has been considering requiring new emission controls to reduce haze-forming nitrogen oxides (NOx) released as a byproduct of burning coal to create electricity at the Navajo Generating Station. The Central Arizona Project fo…
Arizona is challenging a federal decision that requires three coal-fired power plants to upgrade pollution controls.
WASHINGTON - In its first major regulation since the election, the Obama administration on Friday imposed a new air quality standard that reduces by 20 percent the maximum amount of soot released into the air from smokestacks, diesel trucks and other sources of pollution.
FLAGSTAFF - The U.S. Environmental Protection Agency has prescribed new pollution limits on three coal-fired Arizona power plants, aiming to protect the environment and air quality for wilderness areas and landmarks such as the Grand Canyon.
FLAGSTAFF — The U.S. Environmental Protection Agency has outlined a final plan for upgrades at three Arizona coal-fired power plants, including the Apache Generating Station in Southern Arizona.
DETROIT - Hyundai and Kia overstated the gas mileage on 900,000 vehicles sold in the past three years, a discovery that could bring sanctions from the U.S. government and millions of dollars in reimbursements to car owners.
Environmental groups want federal regulators to place a partly coal-fired power plant in Tucson under regional regulations designed to curb regional haze.
PHOENIX - The Environmental Protection Agency and Arizona have a common goal of following the Clean Air Act, but federal officials should recognize the "unique environment" here as they evaluate plans, a state official contends.
This male pygmy owl was sighted in the Altar Valley area on Arizona state land near Three Points in August 2003.
Conservation groups have sued to restore endangered status protection for small owls found in Southern Arizona.
FLAGSTAFF — The U.S. Environmental Protection Agency has issued its final rule aimed at cleaning up the largest single source of haze-causing pollutants in the country.
Arizona Public Service said it may be forced to close down one of the units at its Cholla power plant near Holbrook if the EPA rules go into effect.
PHOENIX - State officials and utilities are trying to kill a plan by the U.S. Environmental Protection Agency to force owners of three coal-fired power plants to install expensive pollution-control equipment to improve visibility.
Tucson Electric Power Co. has filed to raise rates by more than 15 percent, saying it needs its first increase since 2008 to cover rising costs and recoup more than $1 billion in system investments.
The Rosemont Mine, which would have an open pit and tailing piles, is proposed for a northern part of the Santa Rita Mountains, south of Tucson. EPA officials met with mine officials and opponents during a recent visit.