Colorado Targets Suncor Refinery With New Emissions Rules

The obvious narrative is that Suncor is a stubborn giant resisting necessary change. But to hear them tell it, the picture is more complicated. The company argues that its survival is actually a public service, keeping local jobs and fuel prices stable while it shoulders the cost of being the state’s sole refiner.

That argument lands hard because Suncor supplies most of Colorado’s vehicle fuel and a significant share of the aviation fuel at Denver International Airport. It is not just a factory; it is the engine room for the state’s mobility.

However, the regulator sees a different reality. Michael Ogletree, the Air Pollution Control Division Director, framed the upcoming crackdown not as a punishment, but as a response to accumulated data.

“We’ve heard a lot from the community over the years, and now we have the information we need to really aggressively go after measures to help continue to improve emissions from the refinery,” Ogletree said.

The timeline is tight. Regulators plan to ask the Air Quality Control Commission to start reviewing new rules in December, with a final vote expected in early 2027. The goal is to cut toxic gases — specifically benzene, sulfur dioxide, and nitrogen oxide — from the highly visible flares that loom over north Denver and south Adams County.

This is not happening in a vacuum. According to APCD spokesperson Kate Malloy, Colorado is currently investigating three potential violations from July 2024, January 2025, and November 2025. The division is also looking at emissions incidents from early 2026, though a formal enforcement process has not yet launched. This follows a $10.5 million penalty issued in February 2024 for three years of air pollution issues.

Suncor’s response balances cooperation with economic caution. While the company states it has made significant investments in reliability and environmental improvements since 2005, it explicitly flags the potential expense of new regulation.

“As Colorado’s only refining operations, our ability to remain competitive with out-of-state suppliers is essential to supporting local jobs, continuing investment in the facility, and providing the fuels Coloradans rely on every day,” a Suncor spokesperson said.

The tension is clear: the state wants cleaner air, and the refinery wants to stay open. The question is whether the new equipment and procedures mandated by the state will be enough to satisfy the neighbors watching those flares burn, or if the cost of compliance will drive the very competition Suncor fears.

For now, the machinery keeps turning, and the traffic on I-270 keeps flowing. The refinery stands as a backdrop to daily life, a constant presence that is both vital and contentious. As Ogletree suggested, the agency feels it finally has the leverage to act. Whether that action yields results, or just adds another layer of bureaucratic complexity, is the next chapter in a long-running dispute.

Suncor remains committed to continuous improvement, but the pressure is mounting. The community has been vocal, and the regulators are now listening. The stakes are high, involving health, economics, and environmental justice. The outcome will shape the relationship between industry and the state for years to come.

In the end, it comes down to balance. Can a single facility serve the entire state’s needs without becoming a burden? The evidence suggests it’s possible, but difficult. The coming months will reveal whether Suncor can adapt, or if it will be forced to defend its position more aggressively. The community is watching closely, waiting to see if the promises of improvement match the reality of the smokestacks.