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Arizona Department Of Environmental Quality

ADEQ: Patagonia mine wasn't source of orange sludge

ADEQ: Patagonia mine wasn't source of orange sludge

Agency draws flak from environmentalists for its handling of Trench Mine runoff.

October 21, 2014 10:00 pmLoading…
Closed Patagonia mines send orange sludge into creeks

Closed Patagonia mines send orange sludge into creeks

Toxic heavy metals may have leached into the water during heavy rains.

October 15, 2014 8:00 pm Photos

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Hayden, Miami smelters slated for upgrades

Hayden, Miami smelters slated for upgrades

Federal regulations will cut sulfur dioxide emissions 85 percent at the smelters.

October 11, 2014 7:00 pm Photos

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San Pedro River water samplings normal in Arizona

San Pedro River water samplings normal in Arizona

Lab results from San Pedro River water in Mexico not yet known. 

October 03, 2014 8:15 pmLoading…
Business briefs

Business briefs

Phoenix car wash mogul pleads guilty; Asarco to pay Arizona fine; more.

July 25, 2014 12:00 am Photos

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How high will Freeport's tailings climb?

How high will Freeport's tailings climb?

Duncan and Connie Creed say they no longer can enjoy the glow of sunsets in their backyard like they could when they moved into their Green Valley house 11 years ago. The reason, they say, is the stand of mine tailings just west of their home that towers like a huge mesa over the community.

June 08, 2014 12:00 am Photos

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Rosemont opponents sue to toss out air-quality permit

A community group and a retired air-pollution scientist filed separate lawsuits Wednesday challenging Arizona’s approval of an air-quality permit for the proposed Rosemont Mine.

June 05, 2014 12:00 amLoading…

ADEQ, other agencies disagree on Rosemont Mine pollution

Don’t worry, the Rosemont Mine isn’t likely to pollute the well-loved Davidson Canyon or Cienega Creek southeast of Tucson, says the Arizona Department of Environmental Quality.

April 24, 2014 12:00 amLoading…

Upchurch, other federal officials answer questions on the Rosemont Mine

Last Monday, Coronado National Forest Supervisor Jim Upchurch answered questions at a news conference about the Rosemont Mine.

December 22, 2013 12:00 amLoading…

Forest Service will allow Rosemont, but mine is still not a sure thing

The U.S. Forest Service will issue a draft decision today approving the proposed Rosemont Mine in the Santa Rita Mountains southeast of Tucson.

December 13, 2013 12:00 amLoading…
Rosemont meets almost all environmental laws, final federal report says

Rosemont meets almost all environmental laws, final federal report says

The Forest Service laid much of the groundwork Friday for approval of the Rosemont Mine by releasing a final environmental report saying essentially that while the mine will cause negative impacts, it’s now clearly in line with nearly all environmental laws.

November 30, 2013 12:00 amLoading…
Rick Grinnell: Consider all the facts before taking a position on the Rosemont mine

Rick Grinnell: Consider all the facts before taking a position on the Rosemont mine

Whether you are in favor of Rosemont Copper or opposed, your decision ought to be based on the most current facts.

November 06, 2013 12:00 amLoading…

BLM challenges view of mine's impact on streams

The U.S. Bureau of Land Management is intensifying the debate over the proposed Rosemont Mine’s impacts on neighboring streams by bluntly challenging the Forest Service view that the mine probably won’t do major, short-term environmental damage to Cienega Creek.

September 10, 2013 12:00 amLoading…

State board sued for upholding Rosemont water permit

Opponents of the proposed Rosemont Mine have filed suit, seeking to overturn a state decision awarding a groundwater protection permit to mine owners Rosemont Copper Co.

August 21, 2013 12:00 amLoading…
Rosemont Mine's groundwater permit upheld in latest challenge

Rosemont Mine's groundwater permit upheld in latest challenge

Opponents of the proposed Rosemont Mine are 0 for 3 in trying to stop the state from issuing the mine a groundwater-protection permit.

July 10, 2013 12:00 amLoading…

Appeal: Air-quality OK for mine flawed

Rosemont Mine opponents claim in an appeal that Arizona's environmental agency approved an air quality permit for an outdated mine plan and overlooked the likelihood of air quality violations.

March 13, 2013 12:00 amLoading…

Rosemont gets key air permit from state

Rosemont Copper now has one of the most hotly contested permits - although not the last needed - for it to operate a mine southeast of Tucson.

February 01, 2013 12:00 amLoading…

Asarco unit to pay $110K to settle mine spill charges

An Asarco mining operation has agreed to pay a $60,000 fine and take preventive steps valued at $50,000 to resolve water quality violations caused by a June 2010 pipeline spill at the Silver Bell Copper Mine near Marana, the Arizona Department of Environmental Quality announced today.

January 29, 2013 1:32 pmLoading…
Just add water: AZ pushes for 'bioreactor landfills'

Just add water: AZ pushes for 'bioreactor landfills'

Chad Hancock, a technician with Engineering and Environmental Consultants Inc., uses a device to monitor the amount, concentration, temperature and percentage of methane gases from a well at the Los Reales Landfill. Wells are connected to vertical perforated piping that runs throughout the l…

December 29, 2012 12:00 amLoading…
Just add water: AZ pushes for 'bioreactor landfills'

Just add water: AZ pushes for 'bioreactor landfills'

The Arizona Department of Environmental Quality is seeking federal permits to convert landfills like Los Reales to bioreactors. The addition of water to the landfill is expected to accelerate the rate of waste degradation, creating more methane.

December 29, 2012 12:00 amLoading…

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