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Arizona Department of Environmental Quality Director Henry Darwin says the Environmental Protection Agency must be flexible as states they try to meet lower carbon emissions goals. Arizona faces the second-steepest cuts in the nation.

Arizona would have to cut carbon emissions by 52 percent by 2030, the second-steepest cuts in the nation, under the EPA's plan. But the state's target was based on year-round power use and does not account for summertime spikes in demand, state officials say. Read more» 1

Arizona Department of Environmental Quality Director Henry Darwin told a congressional panel that the state has concerns about new federal carbon-emissions rules, but that the EPA and state are talking about the issue.

Arizona would face the second-steepest reductions in carbon emissions in the country - 52 percent - under the federal plan, which aims to cut carbon nationally by 30 percent by the year 2030. Read more»

Arizona Department of Environmental Quality Director Henry Darwin testifies to a House committee on efficiency of regulators. Rep. John Shimkus, R-Ill., said the Arizona DEQ has cut permit wait time by 60 percent through such efficiencies, while still protecting the environment.

The Arizona Department of Environmental Quality has cut the time to process a permit by 60 percent, doubled the number of tank cleanings and made other gains by embracing private-sector policies where possible, Director Henry Darwin testified before a House committee. Read more»

Henry Darwin, director of the Arizona Department of Environmental Quality, answers questions during an interview Tuesday.

Instead of tangling with Arizona over the Clean Air Act, federal regulators should consider Arizona's unique factors, the state's environmental chief says. Read more»

Arizona Department of Environmental Quality Director Henry Darwin, right, told state environmental directors at a forum on Capitol Hill that his agency may have to sue the Environmental Protection Agency if it does not act soon on the state’s air-quality plan.

Arizona is tired of waiting for the federal government to act on the state’s proposed air-quality plan and “very well may” sue the Environmental Protection Agency if action is not taken soon, a state official said Thursday. Read more»

This Arizona Department of Environmental Quality photo shows trash left in southern Arizona’s Santa Cruz Valley.

With many of those crossing the border illegally shifting to remote areas in response to stepped-up enforcement, the trash they leave behind is becoming tougher – and riskier – to clean up, said a state agency director. A Rio Rico-area cleanup is set for next weekend. Read more» 2