Colorado air-quality regulators have identified five priority toxic air contaminants for which they will propose more stringent regulations, including ones emitted from combustion engines, medical-device…
To reduce the amount of fresh water used in oil-and-gas drilling, operators must ensure a certain percentage of water they are using in extraction is…
Colorado regulators officially enacted new rules this week to limit the cumulative impacts of multiple emissions-producing projects on a single area — and, in doing…
After four weeks of testimony and debate, Colorado regulators seem to have aligned on new cumulative-impacts rules that will require more protections from oil and…
In just two weeks, any substantially sized company that produces packaging sold within Colorado — from plastic to glass to wood — must be registered…
Colorado regulators are debating an “enormous” set of regulations that will require consideration of the cumulative impacts of any new or expanded oil-and-gas project on…
Colorado officials are advancing rules to cut carbon emissions in yet another sector — this time in the midstream sector of the oil and gas…
The U.S. Environmental Protection Agency is ending mandates on Colorado regarding one hazardous substance — albeit not the high-profile one that has garnered the attention…
Colorado’s largest manufacturing facilities would be allowed to trade carbon credits next year not just with each other but also with energy-intensive cement and steel…
Environmental advocates this week celebrated a new law that got overshadowed by debate on air-quality regulations this past legislative session — a measure expanding the…