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minimize the adverse effects of currently-existing noise sources." In accordance with the Noise Element, the City has adopted noise standards and guidelines for land use planning. These guidelines for exterior noise levels as presented in Table N-l. City Of Santa Ana Land Use Table N-1 Land Use Guidelines For Exterior Noise Noise Level (dBA CNEL or Ldn) Desirable Maximum Acceptable Maximum Low Density 55 65 Residential Medium Density 60 65 Residential High Density 65 70 Residential Schools 60 70 Commercial, Office 65 75 Industrial 70 75 The City also regulates stationary noise impacts on residential land uses and construction noise though Chapter 18, Article VI of the Municipal Code. The noise ordinance recognizes that some forms of noise are required for urban development and maintenance and are difficult to control. Section 18-314, "Special provisions," provides for these exemptions. Those applicable to the project include: · Section 18-314(e) which exempts noise sources associated with construction, repair, remodeling, or grading of any real property, provided said activities do not take place between the hours of 8: 00 p. m. and 7: 00 a. m. on weekdays, including Saturday, or any time on Sunday or a federal holiday, and A significant noise impact would occur if a proposed land uses does not comply with the General Plan noise standards identified in Table N -1, or when a proposed land use resul ts in an 3dB increase to existing noise levels when the existing noise level is at least 65 dB CNEL. A. Exposure of persons to or generation of noise levels in excess of standards established in local general plan or noise ordinance, or applicable standards of other agencies. C. A substantial per.manent increase in ambient noise levels in the project vicinity above levels existing without the project. 22 75A~2