Radon Mitigation in Aurora, CO
Aurora spans Arapahoe, Adams and Douglas counties. 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.
Aurora homes
Much of Aurora was built from the 1960s onward, with large areas of basement and slab-on-grade homes and newer master-planned communities to the east and south. Newer homes may include passive radon-resistant features, but EPA still advises testing new homes [3].
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 Aurora building division before work starts. Whoever does the work must hold a Colorado radon mitigation license [5].
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