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Air Quality

Study: Your all-electric car may not be so green

Study: Your all-electric car may not be so green

WASHINGTON — People who own all-electric cars where coal generates the power may think they are helping the environment. But a new study finds their vehicles actually make the air dirtier, worsening global warming.

December 15, 2014 2:05 pmLoading…
Study: Your all-electric car may not be so green

Study: Your all-electric car may not be so green

A plug recharges a Smart Car whose electric power may come from coal.

December 15, 2014 2:05 pmLoading…

Why free marketeers don't accept climate science

Because they reject the proposed solution, they dismiss the science.

December 10, 2014 6:00 pmLoading…
Smog rules cause concern for Southwest industries

Smog rules cause concern for Southwest industries

ALBUQUERQUE, N.M. — The Obama administration took steps last week to cut levels of smog-forming pollution linked to asthma and other respiratory problems, but meeting the stricter emissions limits is expected to cost industries billions of dollars.

December 06, 2014 12:00 amLoading…

Tucson air quality at unhealthful levels due to wind

Pima County’s air quality has reached unhealthful levels, thanks to high winds and blowing dust.

May 03, 2013 1:32 pmLoading…

US tightens air-quality rule for soot emissions

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.

December 15, 2012 12:00 amLoading…

ADEQ head to EPA: Let state 'figure out' air quality issues

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.

September 17, 2012 12:00 amLoading…

Ariz. proposes issuing air permit for Rosemont Mine

State regulators are taking over the Rosemont Mine air quality permit from Pima County, the Arizona Department of Environmental Quality announced today.

August 03, 2012 1:11 pmLoading…
Oracle mine may get DEQ approval

Oracle mine may get DEQ approval

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.

June 27, 2012 12:00 amLoading…
Oracle mine may get DEQ approval

Oracle mine may get DEQ approval

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.

June 27, 2012 12:00 amLoading…

Air quality advisory issued for Tucson

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.

June 01, 2012 5:19 pmLoading…

Air-quality hearing is May 31 for planned Marana landfill

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.

May 27, 2012 12:00 amLoading…

Hearing set on air permit for Pima County 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.

May 26, 2012 12:03 pmLoading…

Phoenix won't face stricter ozone rules

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.

May 02, 2012 12:00 amLoading…

County issues air quality advisory

The Pima County Department of Environmental Quality has issued an air quality advisory for particulate matter today.

March 07, 2012 11:45 amLoading…

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