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(a) <br />(b) <br />(1) <br />(2) <br />(3) <br />(4) <br />(5) <br />(c) <br />(a) <br />(Ord. No. NS-1441, § 1, 8-21-78) <br />Sec. 18-312. - Exterior noise standards. <br />The following noise standards, unless otherwise specifically indicated, shall apply to all residential <br />property within a designated noise zone: <br />NOISE STANDARDS <br />Noise Zone Noise Level Time Period <br />1 55 dB(A) 7:00 a.m.—10:00 p.m. <br />50 dB(A)10:00 p.m.— 7:00 a.m. <br />In the event the alleged offensive noise consists entirely of impact noise, simple tone noise, speech, <br />music, or any combination thereof, each of the above noise levels shall be reduced by five (5) dB (A). <br />It shall be unlawful for any person at any location within the City of Santa Ana to create any noise, <br />or to allow the creation of any noise on property owned, leased, occupied, or otherwise <br />controlled by such person, when the foregoing causes the noise level, when measured on any <br />other residential property, to exceed: <br />The noise standard for a cumulative period of more than thirty (30) minutes in any hour; or <br />The noise standard plus five (5) dB(A) for a cumulative period of more than fifteen (15) <br />minutes in any hour; or <br />The noise standard plus ten (10) dB(A) for a cumulative period of more than five (5) minutes in <br />any hour; or <br />The noise standard plus fifteen (15) dB(A) for a cumulative period of more than one minute in <br />any hour; or <br />The noise standard plus twenty (20) dB(A) for any period of time. <br />In the event the ambient noise level exceeds any of the first four (4) noise limit categories above, <br />the cumulative period applicable to said category shall be increased to reflect said ambient noise <br />level. In the event the ambient noise level exceeds the fifth noise limit category, the maximum <br />allowable noise level under said category shall be increased to reflect the maximum ambient <br />noise level. <br />(Ord. No. NS-1441, § 1, 8-21-78) <br />Sec. 18-313. - Interior noise standards. <br />The following interior noise standards, unless otherwise specifically indicated, shall apply to all <br />residential property within a designated noise zone: <br />INTERIOR NOISE STANDARDS <br />4/2/25, 5:26 PM Santa Ana, CA Code of Ordinances <br />about:blank 3/7 <br />21