Industrial noise in unincorporated Adams County is capped by CRS 25-12-103 at 80 dB(A) daytime and 75 dB(A) at night for industrial zones, and 70/65 dB(A) for light industrial, measured 25 feet beyond the property line.
The Colorado Noise Abatement Act sets the highest thresholds for industrial and light-industrial zones, reflecting the county's substantial industrial base near Commerce City and the Denver metro. Facilities must keep sound at or below their zone's maximum at the 25-foot measuring point; readings above that are prima facie evidence of a public nuisance. Periodic, impulsive, or shrill industrial noise is measured against a limit 5 dB(A) lower. County zoning under the Development Standards determines which zone applies to a given parcel; the noise ceiling then follows from CRS 25-12-103.
Industrial noise above the zone cap is prima facie evidence of a public nuisance under CRS 25-12-103, subject to abatement.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Adams County, CO
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See how Adams County's industrial noise rules stack up against other locations.
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