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District <br />Conservation <br />Residential <br />Commercial <br />Industrial <br />Agricultural* <br />ORDINANCE NO. 2011- oos <br />6:00 a.m.-10:00 p.m. <br />L <br />1 <br />L <br />10 <br />L <br />50 <br />10:00 p.m. -6:00 a.m. <br />L <br />1 <br />L <br />10 <br />L <br />50 <br />65 <br />60 <br />55 <br />60 <br />55 <br />55 <br />70 <br />65 <br />60 <br />65 <br />60 <br />55 <br />75 <br />70 <br />65 <br />70 <br />65 <br />60 <br />75 <br />70 <br />65 <br />75 <br />70 <br />65 <br />75 <br />70 <br />65 <br />75 <br />70 <br />65 <br />Level L(1). That noise (A -weighted sound level) exceeding one percent of a <br />measurement time equivalent to at least fifteen (15) minutes. <br />Level L(10). That noise (A -weighted sound level) exceeding ten (10) percent of a <br />measurement time equivalent to at least fifteen (15) minutes. <br />Level L(50). That noise (A -weighted sound level) exceeding fifty (50) percent of a <br />measurement time equivalent to at least fifteen (15) minutes. <br />*Residential developments within Agricultural Zoning Districts shall be subject to the <br />decibel level thresholds for the 'Residential" Zoning Districts. <br />(3) If the noise occurs at any time on Sunday or holidays, the decibel level applicable <br />between 10:00 p.m. and 6:00 a.m. shall prevail. <br />(4) Noise levels shall not exceed the peak noise levels, independent of time <br />duration, set out in Table II below: <br />TABLE- II. PEAK NOISE LEVELS <br />TABLE INSET: <br />Zoning District <br />(dBA) <br />Conservation <br />Residential <br />Commercial <br />Industrial <br />Agricultural <br />Sound Level <br />In Decibels <br />A -Scale <br />75 <br />80 <br />85 <br />85 <br />85 <br />(5) For noise of impulsive character (hammering, etc.), the permissible decibel levels <br />set out in Table I shall be corrected by subtracting five (5) decibels. Impulsive sound is <br />any sound of short duration, usually less than one second with an abrupt onset and <br />rapid decay, e.g. explosions; and blasting, - _ _ - •- . <br />8 <br />