Stage 1 fire restrictions, enacted for unincorporated areas of western Boulder County.

Office of Sustainability, Climate Action, and Resilience (OSCAR)
Two women sit on the banks of a Colorado creek in a forested canyon

Office of Sustainability, Climate Action, and Resilience (OSCAR)

Our mission is to advance policies and programs that conserve resources, protect the environment, and safeguard our climate in order to build a sustainable, just, and resilient community.

Colorado communities are feeling the effects of climate change. They’re dealing with reduced snowpack, earlier snowmelt, and dangerous air quality. Additionally, they face more extreme weather events, severe wildfires, and “high heat” days. In response, Boulder County has stepped up to take action. We’ve initiated bold measures to slash greenhouse gas emissions and remove carbon dioxide from the atmosphere. Our goal is to help our communities adapt and thrive in the face of these challenges. Learn more about our efforts, programs, and more below.

What’s the Latest?

  • July 12, 2024 | Boulder County has released our 2023 Sustainability Tax Report. This report highlights work from 25+ programs funded by the Boulder County Sustainability Tax in 2023, featuring snapshots of community experiences, earned media coverage, and more. Learn more and read the full report here.
  • July 11, 2024 | The 4 Corners Carbon Coalition, a group of cities and counties in the Western U.S. that includes Boulder County, has awarded $335,000 to four projects designed to combat climate change and reduce wildfire risks by sucking carbon from the air. These projects will use the latest carbon dioxide removal (CDR) approaches to transform organic waste into practical, value-added resources like biochar. Learn more in the press release here.
  • July 3, 2024 | Boulder County has commissioned the Denver-based landscape architecture firm Superbloom to develop a ‘nature-based solutions’ toolkit, designed to tackle urban challenges like hotter temperatures, drought, extreme precipitation, air pollution, and increased fire risk. Learn more in the press release here.
  • June 28, 2024 | The City of Boulder, Boulder County, and several local and national organizations have launched the Community Forestry Corps (CFC). Led by the PLAY Boulder Foundation, this initiative employs young people to maintain city trees and collect data on how trees impact heat and climate change. Learn more in the press release here.
  • June 24, 2024 | A court in Boulder has decided that the City of Boulder and Boulder County’s lawsuit against ExxonMobil and two Suncor entities, originally filed in 2018, can continue. The court did not agree with the oil companies’ request to dismiss the case, which claims that the oil companies’ actions have greatly contributed to an altered climate. Learn more in the official press release here.
  • June 3, 2024 | Boulder County Commissioner Ashley Stolzmann was appointed to the EPA’s Local Government Advisory Committee to advise on environmental issues affecting U.S. communities. Stolzmann will use her experience to contribute to important discussions on topics like disaster response, the impact of forever chemicals, and climate equity. Read more in the official press release here.

Our Programs

Business Sustainability – Partners for a Clean Environment (PACE)
Residential Sustainability – EnergySmart
house being built
Marshall Fire Recovery – Rebuilding Better
East Boulder Creek
Nature Based Solutions
A couple walks along the banks of a wetland on a cloudy day, with the Rocky Mountains visible in the distance
Watershed Health – Keep It Clean Partnership
Vehicle Electrification and Sustainable Transportation

Newsroom Highlights

Visit our newsroom for an archive of press releases and media coverage of our work.


Boulder County’s leaders and employees have long held a commitment to stewardship of our land, environment, and community. The Boulder County Commissioners believe that by prioritizing environmental sustainability, we can achieve higher economic vitality in our communities, ensure cleaner air and water for the well-being and public health of residents, and combat major environmental issues, such as climate change. By striving to become as environmentally sustainable as possible, we are supporting countless human and environmental benefits for our county and beyond.

Learn more about OSCAR and meet the team here

Contact Us

Office of Sustainability, Climate Action and Resilience

OSCAR Team Members


Boulder County Courthouse
First Floor
1325 Pearl St.
Boulder, CO 80302
Map and Directions

Hours: 8 a.m. to 4:30 p.m.

Mailing Address

PO Box 471
Boulder, CO 80306