Where We Work: CO-82 and the Crystal River Valley
We serve every town along the roughly 40-mile CO-82 corridor between Aspen and Glenwood Springs, and the Crystal River Valley communities south of Carbondale on CO-133. If your home is on this list, we test it and we fix it:
- Aspen — ZIP 81611/81612, Pitkin County (pop. 7,004)
- Snowmass Village — ZIP 81615, Pitkin County (pop. 3,096)
- Old Snowmass / Snowmass — ZIP 81654, Pitkin County
- Woody Creek — ZIP 81656, Pitkin County (pop. 290)
- Basalt — ZIP 81621, Eagle County mid-valley (pop. 3,984)
- El Jebel — PO ZIP 81628, Eagle County (pop. 4,130)
- Carbondale — ZIP 81623, Garfield County (pop. 6,434)
- Glenwood Springs — ZIP 81601/81602, Garfield County (pop. 9,963)
- Redstone — Pitkin County, Crystal River Valley (pop. 127)
- Marble — Gunnison County, Crystal River Valley (pop. 133)
The geology doesn't change at town lines — uranium-bearing rock and soil run throughout the Colorado Rockies, and fractured rock gives soil gas plenty of pathways into homes. What does change at county lines is your free-test-kit program and which risk numbers apply, so it pays to know which county you're actually in.
Which County You're In — and What It Gets You
Pitkin County (Aspen, Snowmass Village, Woody Creek, Redstone): EPA Zone 1, with roughly 40–50% of locally tested homes coming back above the 4.0 pCi/L action level. The City of Aspen gives away free test kits year-round at Community Development, first floor of City Hall, 427 Rio Grande Place; Pitkin County distributes free kits every January at 530 E Main St, Suite 205, and publishes public dot-maps of valley test results.
Eagle County (Basalt mid-valley, El Jebel): mapped EPA Zone 2 — but roughly 40–45% of Eagle County homes tested exceed the action level, so treat the map as a prediction, not a pass. Free kits are available at county locations including the El Jebel Community Center (limit two per household per year), and Walking Mountains offers mitigation rebates for homes that complete a Home Energy Assessment.
Garfield County (Carbondale, Glenwood Springs): EPA Zone 1, with about 40% of tests above the limit. Free kits are available year-round from Public Health in Glenwood Springs (2014 Blake Ave) and Rifle, and from CLEER at the Third Street Center in Carbondale — they'll even mail one (970-665-6383).
Gunnison County (Marble): no valley kit counter to walk into, but CDPHE offers every Colorado household one free kit per year, and the state's LIRMA program pays for mitigation for qualifying low-income homeowners at or above 4.0.
Whichever county you're in, the playbook is the same: test cheap (often free), and if the number is high, fix it with a properly designed mitigation system and verify with a follow-up test.
Town Guides
Snowmass Village
Zone 1, ski-in/ski-out construction, and a second-home market where vacant condos get tested wrong all the time.
Snowmass Village radon →Basalt & El Jebel
Mapped Zone 2, testing like Zone 1 — plus Eagle County's free kits and the mid-valley's mitigation rebate program.
Basalt & El Jebel radon →Carbondale
Garfield County Zone 1, a ZIP that sprawls across four counties, and our jumping-off point for Redstone and Marble.
Carbondale radon →Looking for Aspen itself? Aspen is our home base and it's covered across the whole site — start with the Aspen radon mitigation overview or the local numbers on radon levels in Aspen & the valley.
Aspen Neighborhoods We Serve
Within Aspen we work every neighborhood: the West End and its historic homes with older foundations; Red Mountain and Starwood, where hillside lots mean walkout lower levels and mixed foundations that need multi-point systems; Smuggler and East Aspen / Mountain Valley; and McLain Flats, where large parcels mostly sit on private wells — if that's you, radon can arrive through your water as well as your slab, so read up on radon in well water before you test.