Santa Clara sets industrial zone noise limits at 70 dBA daytime and 70 dBA nighttime at receiving property lines under City Code Chapter 9.10, with stricter limits applied at residential boundaries.
Santa Clara City Code Chapter 9.10 establishes industrial noise standards reflecting the citys role as a major Silicon Valley employment hub with Intel, Nvidia, Applied Materials, and other technology manufacturers. In industrial zones, exterior noise limits are 70 dBA at any receiving industrial property line, 24 hours per day. However, when an industrial property abuts a residential zone, the residential receiving standard applies: 55 dBA daytime (7 AM to 10 PM) and 50 dBA nighttime (10 PM to 7 AM) at the residential property line. Rooftop HVAC, chillers, backup generators, data center cooling systems, and loading dock activity must all comply. The Bay Area Air Quality Management District (BAAQMD) Regulation 5 addresses air emissions from industrial sources, which can overlap with noise from combustion equipment. Santa Clara requires noise studies for major industrial projects during CEQA environmental review, and conditional use permits may impose additional operational limits on hours and sound levels.
Contact your local code enforcement office for specific penalty information.
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Side-by-side rule comparisons with other cities in Santa Clara County.
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