Do you live in Colorado? Do you oppose Martin Marietta’s proposed gravel mining operation in the St. Vrain Valley? Please sign our petition at Care2 Petitions! If you need a refresher on what’s at stake, have a look at SOSvv’s 2018 media kit, or browse the Background and Concerns sections of our website.

Thank you so much for your inquiry regarding SOSVV’s enrollment in Colorado Gives Day. Unfortunately, part of enrollment requirement is reporting at least one entire previous year of financials with $50,000 in annual revenue because SOSVV incorporated as a nonprofit 501 3C in 2017, and it was our first fiscal year, we could not meet this criteria for enrollment in 2018. 

However, ALL donations made to SOSVV are tax deductible, and will ensure that SOSVV is able to participate in CO Gives Day 2019! Most significantly, donations support our legal efforts necessary to protect the St Vrain Valley from Martin Marietta’s deep-pit gravel mining based on dormant 20 year-old permit and outdated conditions. 

We are proud to report that SOSVV saw tremendous growth and expansion in 2018; SOSVV was a grantee of Patagonia’s Environmental Grant, the international LUSH Foundation Charity Pot, and generous contributions from our neighborhood community members. We appreciate your interest and support as we ring in the new year and wrap-up a history in-the-making fiscal year. To make your tax deductible donation please visit
www.sosvv.wordpress.com today!


Amanda Dumenigo
Chairperson, SOSVV

The agricultural open space and recreational opportunities in and around Hygiene and Lyons are cherished by many, but may soon be dramatically affected by an intensive surface mining operation, possibly lasting until 2033. A Special Use permit issued two decades ago would allow open pit mining in the geologically unique St. Vrain Valley, with the total area of the use approved at approximately 881 acres. Residents and visitors to the area would experience potentially serious health effects; the compromised availability and quality of water; environmental issues affecting wildlife and habitat; and community impacts such as traffic congestion from trucks and trains, as well as noise and light pollution.

Save Our St. Vrain Valley (SOSvv) is a community of concerned citizens. WE NEED YOUR HELP.  Please join us if you are:

  • A resident of Hygiene, Longmont, Lyons, or the vicinity
  • A commuter along the Ute Hwy (Hwy 66) or Foothills Hwy (Hwy 36)
  • A cyclist, runner, equestrian, birdwatcher, sportsman, or photographer
  • A farmer, rancher, gardener, or beekeeper
  • An ally for the environmental protection of Colorado’s Front Range

This site will be updated as we receive information and have announcements to share. Be sure to visit and like our  Facebook page as well.

For background on the current gravel mining site plan, see our page on Martin Marietta’s Special Use Permit.

Video by Amanda Dumenigo