COLSTRIP, Mont. • After several years of taking a beating from the poor economy, new pollution rules and a flood of cheap natural gas, the coal industry was on the rebound this year as mining projects moved forward in the Western U.S. and demand for the fuel began to rise, especially in Asia.
Pima County’s air quality has reached unhealthful levels, thanks to high winds and blowing dust.
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.
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.
State regulators are taking over the Rosemont Mine air quality permit from Pima County, the Arizona Department of Environmental Quality announced today.
The site of a proposed Oracle Ridge copper mine is on the north side of the Santa Catalina Mountains, between Mount Lemmon and the town of Oracle.
Pima County's environmental chief, who denied an air-quality permit for the Rosemont Mine last year, plans to approve one for a much smaller copper mine slated for the back side of the Catalina Mountains.
Another air quality advisory was issued today by the Pima County Department of Environmental Quality because of the elevated levels of smoke and ground-level ozone.
The Pima County Department of Environmental Quality will hold a public hearing at 5:30 p.m. on Thursday, May 31, on the request for an air-quality permit for DKL Holdings Inc., Marana Regional Landfill.
Pima County Department of Environmental Quality will hold a public hearing at 5:30 p.m. on Thursday, May 31, on the request for an air-quality permit for the DKL Holdings Inc., Marana Regional Landfill.
PHOENIX - Federal authorities say Maricopa County exceeds the new federal limit on ozone pollution. However, the county is close enough to complying that it won't be required to impose stricter rules on motorists or industries.
The Pima County Department of Environmental Quality has issued an air quality advisory for particulate matter today.