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Farmworkers harvest lettuce in Yuma in this 2012 file photo. New federal regulations aim to protect farmworkers from pesticide exposure, but some farm groups wonder if regulations are necessary.

The federal government outlined new safety measures Monday that will protect farmworkers from pesticide exposure by banning pesticide use by minors and sharply increasing training requirements, among other changes. Read more»

Navajo Nation President Russell Begaye told a  Senate committee that EPA’s reponse to the Animas River spill created a “culture of distrust” between the tribe and the agency.

Navajo Nation President Russell Begaye on Wednesday blasted the Environmental Protection Agency’s handling of a toxic spill in the Animas River, saying the agency’s response left his tribe feeling abandoned, uncertain and hopeless. Read more»

The final Clean Power Plan released by the Environmental Protection Agency aims to cut carbon emissions nationwide. In Arizona, where the Four Corners Power Plant is located, the goal will be to cut carbon from 1,552 pounds per megawatt hour in 2012 to 1,031 pounds by 2030.

Arizona environmental groups cheered the final version of the Clean Power Plan unveiled Monday, a first-ever national standard that aims to cut power plant emissions by a third by 2030. But Arizona utilities and state officials both were more cautious, saying they need to study the plan that has been more than a year in the making. Read more» 1

A new federal rule was meant to clarify the scope of the Clean Water Act, but some critics are saying the 300-page document has done little to clear up the issue since its release last week. Read more»

The Cholla Power Plant in Joseph City, near Holbrook.

FactCheck: The head of the Environmental Protection Agency told Congress her agency’s proposed rules governing carbon dioxide emissions from power plants will not affect the reliability of electricity service. That’s debatable. Read more»

The EPA proposed the first-ever limits on greenhouse gas emissions from existing power plants on Monday. The high-profile announcement marks the second time in less than a year the agency has released far-reaching rules aimed at fulfilling a key pillar of President Obama's sweeping climate plan — to cut carbon pollution from both existing and planned power plants. Read more»

The coal-burning Navajo Generating Station, shown here, and the Four Corners Power Plant would not be subject to the emissions limits set for Arizona. They and two other plants on tribal land would work directly with the EPA.

Arizona power plants would have to make the second-highest reductions in carbon emissions in the nation under new rules proposed Monday by the Environmental Protection Agency. Read more»