Anza, CA Noise Ordinances: Aircraft Noise (2026)

Aircraft noise itself is regulated by federal law, so unincorporated Riverside County does not impose a decibel limit on planes. Instead, the county manages aircraft noise through land-use compatibility planning in its General Plan Noise Element (GPA No. 960) and through the Riverside County Airport Land Use Commission (ALUC). The Noise Element identifies roughly fourteen to fifteen public-use or military airports within or directly affecting the county, including Banning Municipal, Bermuda Dunes, Blythe, Chiriaco Summit, Desert Center, Jacqueline Cochran Regional, Flabob, French Valley, Hemet-Ryan, March Joint Air Reserve Base/March Inland Port, Perris Valley, Riverside Municipal and Skylark, plus Chino and Corona Municipal. CNEL noise contours for these airports are mapped in each Area Plan's Airport Influence Area. Key policies: Policy N 7.1 requires new development within Airport Influence Areas to comply with the noise compatibility criteria in the applicable airport land use compatibility plan; Policy N 7.3 prohibits new residential land uses (except a single-family dwelling on an existing legal lot) within the current 60 dB CNEL contours of any operating public-use or military airport. More broadly, Policy N 1.3 discourages noise-sensitive uses (schools, hospitals, residences, places of worship, etc.) in areas exceeding 65 CNEL, and an acoustical study may be required at 60 CNEL or greater. A separate policy applies the same 60 dB CNEL residential prohibition around the Chocolate Mountain Aerial Gunnery Range.