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7.A. - Page 32 <br /> Summary of Impacts <br /> Potentially Less than Significant Less than <br /> Significant With Mitigation Significant No <br /> Im act Incor orated Im act Im act <br /> XI. MINERAL RESOURCES -- Would the project: <br /> a) Result in the loss of availability of a known mineral resource that would be of X <br /> value to the region and the residents of the State? <br /> b) Result in the loss of availability of a locally important mineral resource X <br /> recovery site delineated on a local general plan, specific plan or other land use <br /> plan? <br /> Documentation <br /> a. & b. The amendments and project site do not contain valuable or locally important mineral resources, nor will they <br /> consume extraordinary amounts of mineral resources. Therefore, project implementation will not create an impact <br /> on mineral resources. <br /> Summary of Impacts <br /> Potentially Less than Significant Less than <br /> Significant With Mitigation Significant No <br /> Im act Incor orated Im act Im act <br /> XIL NOISE — Would the project: <br /> a) Expose persons to or generate noise levels in excess of standards established in X <br /> the local general plan or noise ordinance, or applicable standards of other <br /> agencies? <br /> b) Expose persons to or generate excessive ground-borne vibration or ground- X <br /> borne noise levels? <br /> c) Result in a substantial permanent increase in ambient noise levels in the X <br /> project vicinity above levels e�sting without the project? <br /> d) Result in a substantial temporary or periodic increase in ambient noise levels X <br /> in the project vicinity above levels e�sting without the project? <br /> e) For a proj ect located within an airport land use plan or, where such a plan has X <br /> not been adopted, within two miles of a public airport or public use airport, <br /> expose people residing or working in the project area to excessive noise <br /> levels? <br /> fl For a proj ect within the vicinity of a private airstrip, expose people residing or X <br /> working in the proj ect area to excessive noise levels? <br /> Documentation <br /> a., b., & d. Noise in Redwood City is regulated by the City's Noise Ordinance (Chapter 24 of the Municipal Code). In <br /> addition, the Noise Element of the City's General Plan enumerates noise policies. More specifically, excessive and <br /> unreasonable noise levels are defined as noise levels generated by construction activities, including demolition, <br /> alteration, repair or remodeling of existing structures, and construction of new structures, on property within the <br /> City, at more than 110 decibels (dB) measured at arry point within a residential district of the City and outside of the <br /> plane of the property. <br /> Therefore, construction noise is required to be less than 110 dB within residential districts or within 500 feet of a <br /> residential district in the City, and no construction noise is permitted between the hours of 8: 00 P.M. and 7: 00 A.M. <br /> the following day. The General Plan requires all exterior noise sources (construction operations, air compressors, <br /> pumps, fans, and leaf blowers) to use available noise suppression devices and techniques to bring exterior noise <br /> down to acceptable levels compatible with adjacent land uses. <br /> 23 <br />