ACHD Article XXI Part F sets countywide commercial/industrial noise limits: 65 dBA day / 55 dBA night at receiving residential property lines. This is one of the few truly countywide noise rules in Allegheny County.
Allegheny County Health Department enforces Article XXI on all commercial and industrial operators countywide, including frac sand plants, steel mills, data centers, and HVAC rooftop units. Measured at the property line of the receiving (complainant) property. Daytime 7 AM to 10 PM = 65 dBA; nighttime 10 PM to 7 AM = 55 dBA. Impulse/tonal noise gets a 5 dBA penalty. ACHD can issue orders, require mitigation, and levy penalties.
ACHD civil penalties up to $25,000 per violation; typical enforcement $500-$5,000.
Allegheny County, PA
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See how Allegheny County's industrial noise rules stack up against other locations.
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