It is unclear which, if any, agency is actively investigating the allegations.
About 2,000 complaints have been filed with county over last three years.
Time is winding down to make one last dump run to the Tangerine Landfill.
The mining giant Asarco will pay Pima County its second round of civil penalties and environmental reparations in three years over tailings dust blowing from its Mission Mine in Sahuarita into neighboring homes.
Pima County’s air quality has reached unhealthful levels, thanks to high winds and blowing dust.
Once again, Southern California has blazed a trail for Arizona - this time, a dusty trail.
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 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.
Spending five minutes a month on one simple task will help drivers save money, lives and the environment.
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 has issued a smoke advisory due to smoke from wildfires burning in New Mexico.
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.
The Pima County Department of Environmental Quality has issued an air quality advisory for particulate matter today.
Pima County has created a poster with 51 conservation tips and
many local animals. It can be downloaded for free.
If you want to save the environment but don't possess the powers
of Captain Planet, never fear, a new poster is here!