Oceanside caps one-hour average sound at the property line: 70 dBA daytime and 65 dBA overnight on industrial land, dropping to 50 dBA day and 45 dBA night at single-family homes. Noise Control Ordinance Section 38.12 sets the table; data-center cooling and generators must comply.
Oceanside's Noise Control Ordinance, City Code Section 38.12, makes it unlawful to produce noise whose one-hour average sound level exceeds the table limit at or beyond the source property's boundary. Limits run by base-district zone: Industrial 70 dBA (7 a.m.-9:59 p.m.) and 65 dBA (10 p.m.-6:59 a.m.); Commercial 65/60; single-family residential RS 50/45; high-density RH 55/50. Where two zones share a property line, the limit is the arithmetic mean of the two. A data center's continuous cooling towers, chillers, and backup generators are measured against the nearest receiver, so the 45 dBA overnight residential floor binds a site abutting homes.
Noise over the Section 38.12 limits on three or more days in thirty triggers a notice of noncompliance; a third violation within a year is a misdemeanor carrying fines up to $500 or jail.
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Side-by-side rule comparisons with other cities in San Diego County.
See how other cities in San Diego County handle data center noise limits.
See how Oceanside's data center noise limits rules stack up against other locations.
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