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B. A substantial permanent increase in ambient noise levels in <br />the project vicinity above levels existing without the <br />project. <br />C. Exposure of persons to or generation of excessive <br />groundborne vibration or groundborne noise levels. <br />D. A substantial temporary or periodic increase in ambient <br />noise levels in the project vicinity above levels existing <br />without project. <br />No Impact <br />Approval of the proposed amendment to SD -60 would not directly <br />result in any short -term or long -term noise impacts or excessive <br />groundborne vibration impacts, in that the proposed project <br />would not involve any changes in land uses, changes in <br />development intensities or construction activities that would <br />increase long -term or short -term noise levels within the SD -60 <br />project area. <br />E. For a project located within an airport land use plan or <br />where such a plan has not been adopted, within two miles of <br />a public airport or public use airport, would the project <br />expose people residing or working in the project area to <br />excessive noise levels? <br />No Impact <br />The City of Santa Ana is located just southeast of John Wayne <br />Airport. According to the Orange County Airports Environs Land <br />Use Plan, there are no areas within the City that are within the <br />noise impact area or 65 CNEL of John Wayne Airport. Therefore, <br />approval of the proposed amendment to SD- 60,would not expose <br />people within the SD -60 project area to excessive aircraft noise <br />impacts. <br />X. POPULATION /HOUSING <br />A. Induce substantial population growth in an area, either <br />directly or indirectly through extension of roads or other <br />infrastructure. <br />B. Displace substantial numbers of existing housing, <br />necessitating the construction of replacement housing <br />elsewhere. <br />C. Displace substantial numbers of people, necessitating the <br />construction of replacement housing elsewhere? <br />No Impact <br />EXHIBIT 2 <br />13 <br />