Denver was ranked behind only Los Angeles for poor air quality in 1977. It is now the first city to come all the way back to clean-air status.
"Last week, federal air-quality officials also proposed designating Denver a clean-air city for another pollutant - carbon monoxide. And Gov. Bill Owens' administration is "very confident" the EPA will accept a plan submitted this summer to limit the levels of particulates, the source of Denver's notorious brown cloud. When that happens, Denver - ranked behind only Los Angeles in 1977 for the poor quality of its air - will be the first city in the country to come all the way back to clean-air status... What it does mean is that companies that want to move to Colorado will have an easier time getting air-pollution permits. Transportation projects will not face federal funding restrictions. Consumers will benefit as winter and summer gasoline reformulations will be phased out."
Thanks to Governing News
FULL STORY: 'Clean air' city is closer
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UCLA Lewis Center for Regional Policy Studies
Mpact (formerly Rail~Volution)
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City of Piedmont, CA
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HUDs Office of Policy Development and Research