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<br />Legacy Sunflower Apartments Page 75 <br />Mitigated Negative Declaration – March 14, 2019 <br /> <br />As shown in Table 16 the City of Santa Ana has adopted Interior and Exterior noise standards that are <br />applicable to the project. <br />Table 16 <br />City of Santa Ana Interior and Exterior Noise Standards <br /> <br />Categories Land Use Categories Interior1 Exterior2 <br />Residential Single-family, duplex, multi- <br />family 45 3 65 <br />Institutional <br />Hospitals, school <br />classrooms/playgrounds 45 65 <br />Church, library 45 -- <br />Open Space Parks -- 65 <br />(1) Interior areas to include but are not limited to: bedrooms, bathrooms, kitchens, living rooms, dining rooms, closets, <br />corridors/hallways, private offices, and conference rooms. <br />(2) Exterior areas shall mean: private yards of single family homes, park picnic areas, school playgrounds, common areas, <br />private open space, such as atriums on balconies, shall be excluded form exterior areas provided sufficient common <br />area is included within the project. <br />(3) Interior noise level requirements contemplate a closed window condition. Mechanical ventilation system or other means <br />of natural ventilation shall be provided per the Uniform Building Code. <br />Source: City of Santa Ana General Plan Noise Element Table 1, 1982. <br /> <br />City of Santa Ana Municipal Code <br /> <br />The City of Santa Ana Municipal Code Article VI Noise Control establishes daytime and nighttime <br />permissible sound limits or levels for all residentially zoned properties as well as prohibited noises. <br />These standards apply to all project generated on-site operational noise that may extend to adjacent <br />properties. The City’s exterior and interior noise standards as allowed by the Municipal Code are <br />shown below. <br /> <br />Section 18-312- Exterior Noise Standards. <br /> <br />The following exterior noise standards, unless otherwise specifically indicated, shall apply to all <br />residential property within a designated noise zone. The City of Santa Ana is designated as Noise <br />Zone 1. <br /> <br />Exterior Noise Standards <br />Noise Zone Noise Level Time Period <br />1 55 dB(A) 7:00 AM - 10:00 PM <br /> 50 dB(A) 10:00 PM - 7:00 AM <br /> <br />Section 18-313- Interior Noise Standards. <br /> <br />The following interior noise standards, unless otherwise specifically indicated, shall apply to all <br />residential property within a designated noise zone. <br /> <br /> <br />Interior Noise Standards <br />Noise Zone Noise Level Time Period <br />1 55 dB(A) 7:00 AM - 10:00 PM <br /> 45 dB(A) 10:00 PM - 7:00 AM <br />6-97