Corona caps stationary-source noise at the receiving property line: 55 dBA daytime and 50 dBA nighttime at homes, 65/60 dBA at commercial, and 75/70 dBA on industrial land. Municipal Code Sec. 17.84.040 sets the table, and unlike Riverside County it does not exempt air-conditioning equipment.
Corona Municipal Code Sec. 17.84.040, Table 1 (Stationary Noise Source Standards), sets exterior limits by the receiving land use. Single-, double-, and multi-family residential: 55 dBA from 7 a.m. to 10 p.m. and 50 dBA from 10 p.m. to 7 a.m. Commercial: 65/60 dBA. Industrial, manufacturing, or agricultural: 75/70 dBA. Limits drop 5 dBA for impulse or simple-tone noise. A data center's cooling towers, chillers, and generators are measured against the nearest receiver's limit. Corona also requires mechanical equipment such as air conditioners to be set back ten feet from a residential property line - it does not exempt HVAC noise.
Noise exceeding the Sec. 17.84.040 limits is a code violation enforced by the City through citations and, for a permitted data center, breach of noise conditions on its use permit.
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Side-by-side rule comparisons with other cities in Riverside County.
See how other cities in Riverside County handle data center noise limits.
See how Corona's data center noise limits rules stack up against other locations.
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