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ABOUT THE MAP. This map shows the exterior levels of noise created by aircraft operations at John Wayne Airport. California Building <br />.ode (Title 21) standards states that the basis for the acceptable level of aircraft noise for persons living in the vicinity of airports is 65 <br />decibels (dBA CNEL). <br />/ N Warner Ave F, <br />3 a4 <br />/ a <br />Segerstrom <br />N <br />MacArthur Blvd m <br />65 dBA <br />CNEL <br />Dyer Rd <br />c <br />2 Alton Ave <br />60dBA <br />CNEL i <br />NEWPORT BEACH <br />0 ��Miles <br />0 0.5 1 <br />Santa Ana Airport 2012 Annual Noise Contours Suume: necreatetl iron Orange Gewi Airport Land Use commission, Cate Published: 9/20/2020 <br />grant Environs Lead Use Plan for Santa Ma Nrport 2008. <br />60 dBA CNEL <br />65 dBA CNEL <br />Community Noise Equivalent Level (CNEU: The energy -average of the sound levels <br />70 dBA CNEL during a 24-hour period, with 5 decibels (dB) added to the levels from 7:00 pm to 10:00 <br />pm and 10 dB added from 10:00 pm to 7:00 am. The decibels are measured in terms of <br />- 75dBACNEL relatives loudness as perceived by the human ear, referred to as A -weighted decibels (dBA), <br />FIGURE N-3 <br />AIRPORT NOISE CONTOURS CITY OF SANTA ANA GENERAL PLAN �� rr .1..• <br />