Perris Municipal Code Chapter 7.34 sets measurable decibel limits: amplified sound at the property line is capped at 80 dBA daytime (7:01 a.m.-10:00 p.m.) and 60 dBA nighttime (10:01 p.m.-7:00 a.m.); residential construction at 80 dBA; leaf blowers at 80 dB at 50 feet. Exceeding ambient by more than 1.0 dB presumes a violation.
Perris uses A-weighted decibel (dBA) standards defined in sections 7.34.020 and measured per section 7.34.030, which requires a sound-level meter meeting ANSI S1.4-1971 (type S-2A). Outdoor measurements are taken at the property line of the noise source, no closer than five feet from any wall and three to five feet above ground. The core limits in section 7.34.040 cap amplified sound at 80 dBA from 7:01 a.m. to 10:00 p.m. and 60 dBA from 10:01 p.m. to 7:00 a.m. at or beyond the property line. Section 7.34.050 adds that noise causing the property-line level to exceed the ambient noise level by more than 1.0 decibel is presumed to be a violation. Section 7.34.060 caps residential construction activity at 80 dBA, and section 7.34.080(7) caps leaf blowers at 80 dB measured at 50 feet. Off-highway vehicle noise in section 7.34.100 is tied to the California Vehicle Code section 23130 table with a distance-correction schedule. These numeric standards are set by the City of Perris's own code (Ord. No. 1082, 2000) and govern within the city, not the Riverside County noise ordinance, which covers unincorporated areas.
Noise measured above these dBA limits, or exceeding ambient by more than 1.0 dB, is a public nuisance punishable as a misdemeanor (7.34.010), documented with an ANSI-compliant sound-level meter by City of Perris Code Enforcement.
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