Ordinance No. 18915 - Laserfiche WebLink

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In the event the receiving property is occupied by a dwelling, hospital, scho©l, library or nursing home, even though it may be otherwise zoned far commercial or industrial. and re~,ated uses, maximum one hour equivalent sound pressure received shall be: i ime of Day Level 7AM- 1D PM ~57 1D PM - 7 AM 50 fib} Existing uses. Noise emissions from uses existing as of January 27, 1982 that exceed prescribed maximums shall comply with those maximums within 24 months thereof . ~c} Noises of sham duration. Far noises of short duration or impulsive character, such as hammer- ing, maximum one hour sound pressure levels permitted beyond the property of origin shall be seven decibels less than those .listed in section 9.644~a}. ~d~ Noises of unusual periodic character. For noises of unusual periodic character, such as humming, screeching, and pure tones, the fallowing median octave band sound pressure levels, as required by the Depart- ment of Environmental Quality, shall not be exceeded beyond the property of origin when the receiving prop- erty is residentially zoned or is occupied by a dwell- ing, hospital, school, library, or nursing home: 1. ~~edian Octave Band Sound Pressure Levels Octave Band Center Frequenc~r , H,,,z .,,,,~~ 7AM- lOPM lOPM- 7AM 31.5" 68 65 63 65 62 1,25 61 56 250 55 50 5DD 52 46 100D 49 43 2000 46 44 4,000 43 37 8D00 40 34 2. Additional allowance. ing property tai, school, sound decibel specified in permitted as Receiving Pro~ert~ Zone _I~1. Commercial M-1 is not occupied by library, or nursing emission above the section 9.644 ~d} 1, follows: to 5 10 {e~ Exem toons. Local noise standards set forth in this section do not apply to the fallowing situations: 1. Emergency equipment operated on an irregular or unscheduled basis. tiahen the receiv- a dwelling, hospi- home, an additional pressure levels above shall be Additional Decibels Allowed Ordinance -- 4