Draft sets daytime 60 dB, nighttime 50 dB limits and restricts generator testing to business hours
Staff proposed 60 decibel daytime and 50 decibel nighttime noise limits for stand‑alone data centers and would allow routine generator testing only between 9 a.m. and 5 p.m. on weekdays; large sites would need preconstruction acoustic analyses and retesting after substantiated complaints.
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The draft regulations propose daytime noise limits of 60 decibels and a 50‑decibel maximum at night, and would require large data centers to submit preconstruction acoustic analyses. Staff explained routine generator testing would be limited and scheduled so communities are not repeatedly exposed to high testing noise. "Routine testing and maintenance of backup generators shall be be permitted only between 9AM and 5PM Monday through Bridal, excluding federal holidays," the draft says, and requires testing schedules be submitted to the city.
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