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U.S. environmental regulators are measuring the extent of pollution from the historic disposal of dry cleaning chemicals down floor drains in Montana’s largest city.
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State environmental regulators responded to EPA disapproval to the new nutrient pollution standards.
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A federal appeals court says that the state of Montana and the U.S. government are within the bounds of the law in granting three dozen Montana wastewater treatment plants an exception to clean water standards.
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Environmental regulators say a natural gas plant proposed for construction in south central Montana satisfies the state’s air quality standards.
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Federal environmental regulators have released a list of options to clean up the former Columbia Falls Aluminum Company superfund site in northwest Montana.
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A federal agency proposed granting Superfund status to an area of Billings, Mont. contaminated by dry cleaning chemicals.
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The first school to submit its results under Montana’s new lead monitoring program tested positive for lead.
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Work to prevent harmful sediment from flowing into the Flathead River from a former aluminum plant will begin this fall. This is the first remediation...
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Editor's note: This story follows Environmental Protection Agency guidance and uses pesticide as an umbrella term for substances that control…
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While a federal agency recently reauthorized a poison used in a predator-killing cyanide trap, more states are banning or limiting where they can be used.…