Help Preserve the Ecologically Unique St. Vrain River Watershed

SOSVV’s Current Priorities

  • Boulder County Weed Management

    Advocating for safer, more sustainable weed management practices that align with the community's environmental values and health priorities.

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  • CEMEX Compliance

    Holding Boulder County’s #1 Polluter Accountable to all local, state, and federal regulations.

    If they can’t get compliant, they need to close.

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  • Martin Marietta Legal Battle

    Ensuring that permit expirations are upheld and protecting the St. Vrain Valley from a NEW ~800-acre open-pit gravel mine.

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CEMEX, Boulder County’s largest CO2 polluter, is fighting to overturn the county’s April 2024 decision to terminate its operations at the Lyons cement plant due to violations of its nonconforming use. SOSVV is supporting efforts to ensure the termination is upheld, protecting public health, air quality, and our region’s climate goals. We’re working closely with community partners like Good Neighbors of Lyons to scrutinize CEMEX’s evidence, expose their flawed traffic study, and advocate for stricter environmental accountability.

What’s at Stake?
Allowing CEMEX to continue operations without accountability jeopardizes:

  • Public health and air quality.

  • Cultural and natural heritage, including wildlife habitats.

  • Boulder County’s commitment to sustainability and climate action.

How You Can Help
Your contribution to SOSVV will directly support ongoing legal and advocacy efforts to uphold Boulder County’s termination of CEMEX’s operations and prevent future industrial threats to the Saint Vrain Valley.

Please Donate

SOSVV is a 501c3 and 100% volunteer led. All funds go towards legal expenses to protect and conserve the geologically unique and historic St. Vrain Valley.

Every dollar means so much (and boosts our morale too!).

Change begins at the local level. We’ve done it before.

Over the last 6+ years we have secured key campaign victories, and protected the Valley from an onslaught of industrial uses, and de-facto rezoning / spot zoning; campaigns holding Boulder County Land Use Dept, BCPOS, Aggregate Industries, Martin Marietta Materials, and CEMEX accountable to Special Use permit expirations, accountable to the residents, visitors, wildlife, and existing uses of the St. Vrain Valley.