Colorado air quality regulators update plan to lower ozone levels and align with EPA standards
The new State Implementation Plan comes as the Front Range anticipates a downgrade in its ozone compliance status
Denver aims to raise awareness of steadily worsening air quality on the Front Range
Metro Denver has this year recorded the highest number of particulate warning days — the form of pollution exacerbated by wildfire smoke — in at least 10 years.
Air pollution, asthma rates in Colorado’s San Luis Valley are a growing concern
About 14% of San Luis Valley children suffer from asthma, which is a medically significant higher number than the 12% U.S. average. Can monitoring air quality help?
Six months after historic Suncor settlement, community around Commerce City refinery still feels “exploited”
The oil company began surveying the community on Wednesday, but continued issues at the refinery have neighbors feeling skeptical
Opinion: It’s time to talk about Colorado’s unwanted houseguest – air pollution
Drafting rules to reduce Colorado’s greenhouse gas emissions may prove even harder because of missing data
The state's Air Quality Control Commission doesn’t expect new rules to be in place for another year
Colorado, Denver join 25 other cities and states in suing EPA for relaxing clean-car rule
The EPA’s final rule also could impact Colorado’s zero-emissions mandate
There’s a push to increase fines for Colorado polluters and directly help impacted communities
Last year, Colorado legislators pushed for stricter environmental protection. This year, they want everyone to benefit from the solutions.
Colorado regulators approve tougher oil and gas air rules, ending statewide disparity
The regulations would require more frequent inspections for leaks for facilities within 1,000 feet of homes, schools and other public facilities, officials said
EPA lowers Denver area’s air quality rating to “serious”
The change will force the state to work harder to reduce harmful pollution but also bring tougher and costly regulations for businesses
Colorado to challenge Trump administration decision ending states’ waiver for stricter vehicle-emissions
The Environmental Protection Agency on Wednesday is set to end a waiver that allowed California and other states to have tighter vehicle emissions rules than ones mandated federally
Opinion: Why the zero emission vehicle standard matters — and what it means for Colorado
In a twist, Colorado asks the EPA to lower the state’s air rating from “moderate” to “serious”
The EPA will hold a Friday hearing on whether to lower the ozone status of Denver and eight other northern Colorado counties from "moderate" to "serious"
Colorado commission votes 8-1 to adopt zero-emissions vehicle mandate after three-day hearing
Colorado's adoption of ZEV rule means more electric vehicles will be on sale in the state. Commissioner Tom Gonzales voting against the rule.
The fierce debate over Colorado’s new zero-emissions rules includes auto dealers who are meeting future standard
The proposed ZEV rules aren't a fix for Colorado's air-quality problems, officials say. If adopted, nearly 94% of new cars sold in 2030 could still be gas-powered vehicles.
As Colorado considers an electric-vehicle mandate, here’s what to expect
Here’s the data behind some of the arguments that will be made as the state considers adopting an electric vehicle policy to improve air quality
Auto dealers say electric car mandate — a cornerstone of Colorado’s clean air quest — is a threat to tradition
Lowering emissions is a top priority in Colorado, but a look at how dealerships make money — parts, upgrades and financing — shows why dealers aren't happy about the plan to get more zero emission vehicles on the road
Opinion: Let’s not get left behind when it comes to clean cars, Colorado
Now is the wrong moment to hit the brakes on electric vehicles