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Responses to Environmental Checklist For CEQA Compliance According to the City's Updated General Plan Land Use Element EIR, there are no areas in Santa Ana that are designated significant Mineral Aggregate Resource Areas. Therefore, implementation of the proposed project would not result in the loss of any regionally or locally important mineral resource. As the project site does not contain any natural mineral resources, no impact would occur XI. Noise 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. D. A substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels existing without project. Less Than Significant Impact with Mitigation Incorporated The project site is subject to noise standards and guidelines in the General Plan Noise Element and Municipal Code Noise Ordinance. The primary purpose of the City of Santa Ana Noise Element is to "Prevent significant increases in noise levels in the community and 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 are presented in Table N-1. Table N-1 Git Of Santa Ana Land Use Gu idelines For Exterior Noise Land Use Noise Level dBA CNEL or Ldn Desirable Maximum Maximum Acce table Low Densit Residential 55 65 Medium Densit Residential 60 65 Hi h Densit Residential 65 70 Schools 60 70 Commercial, Office 65 75 Industrial 70 75 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 results in an 3dB increase to existing noise levels when the existing noise level is at least 65 d6 CNEL.The operation of the proposed project would not significantly increase noise levels within the project site. A significant increase in noise would be a 3dB increase over existing noise levels. Typically, a 3db increase in noise levels occurs when existing traffic volumes are doubled. The proposed project would not double existing traffic volumes within the project area. Therefore, implementation of the proposed project would not result in a 3db increase to existing noise levels within the project area. Implementation of the proposed project would result in short-term construction related noise impacts. Short-term noise impacts would result from site preparation, excavation, grading, and other construction operations. The construction-related short-term noise levels would be higher than the existing or ambient noise levels in the project area today, but would no longer occur once construction of the project is complete. The Municipal Code recognizes that some forms of noise are required for urban development and maintenance and are difficult to control. Section 18-314(e) exempts noise sources associated with 75A-50