Radon Mitigation in Arvada, CO
Arvada lies mainly in Jefferson County, with part in Adams County. The EPA Map of Radon Zones places most Front Range counties in Zone 1, the highest predicted radon potential; check your county on the map [1]. Zone maps describe county averages, not individual homes; CDPHE notes elevated levels are found throughout Colorado and every home should be tested [2].
Geology
Radon comes from the natural decay of uranium in soil and rock [2]. The Colorado Geological Survey explains that Colorado's granitic and metamorphic rocks, and the soils and sediments eroded from them along the Front Range, contribute to the state's elevated radon potential [4]. Soil permeability under your slab affects both radon entry and how well a sub-slab system performs.
Arvada homes
Arvada combines older homes around Olde Town with post-war and later subdivisions to the west and north, many with full or garden-level basements and some crawl spaces. Additions on a different foundation type than the original house can need separate suction points.
Permits and licensing
Radon fan wiring and roof or exterior penetrations may require a permit from your local building department; your mitigator should confirm with the Arvada building division before work starts. Whoever does the work must hold a Colorado radon mitigation license [5].
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