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8.0 <br /> Exh�t'i� 71 <br /> Impact lOj. Flooding Impacts. As part of the City's participation in the <br /> National Flood Insurance Program, all new developments within designated <br /> flood hazard zones are required to meet specific flood damage avoidance <br /> requirements. Compliance with these requirements will ensure that the DPP <br /> does not place people or structures at unacceptable risk of injury or loss from ' <br /> flooding, and the potential flooding related impacts of the DPP are considered I, <br /> less than significant. <br /> lmpact lOk. Flooding Impacts Related to Dam Failure. The western <br /> portion of the DPP area is within the Emerald Lake dam failure inundation <br /> area, and could be subject to flooding and associated risk of injury and loss of <br /> property in the event of a catastrophic failure of the dam. Redwood City <br /> participates in the CA OES dam failure inundation mapping and emergency <br /> procedure program and has included potential dam failure in its emergency I <br /> preparedness, response and evacuation programs. Therefore, the potentia.l <br /> flooding impacts related to failure of the Emerald Lake dam would be ]ess <br /> than significant. <br /> Impact 101. Seiche, Tsunami and Mudflow Impacts. These are risks <br /> associated with seismic activity near large bodies of water, or the flow of mud i <br /> and other debris from hillsides. The DPP area is flat and far from hillsides, I, <br /> and is not subject to risk from debris flow source areas as mapped by the <br /> Association of Bay Area Governments, based on data from the U.S. <br /> Geological Survey. The potential impacts of the DPP related to seiche, <br /> tsunami and mudflow would be less than significant. j <br /> 11 Noise and Vibration '� <br /> Impact 11a. Permanent Increases in Noise Levels. Development I� <br /> contemplated by the DPP could change noise levels by facilitating new I <br /> development in the DPP area ar�d changing traffic patterns. The expected <br /> increase in traffic noise level attributable to the DPP would be from less than <br /> 1 to up to 2 dBA CNEL. Total noise level increases of 3 dB or greater would <br /> be considered significant in this existing urban environment. Therefore, any <br /> increases in traffic noise levels as a result of the DPP are expected to be less <br /> than significant. <br /> Impact llb. Airport Noise Impacts. The DPP area is located within two <br /> miles of the San Carlos Airport, but is outside the projected 55 dB CNEL <br /> contour published in the Redwood City General Plan and the CLUP. <br /> Therefore, the potential impact related to airport noise is considered less than <br /> significant. <br /> S:1RES(�LU fIUNS',Reso. 2092 CLQ.4 Pindin�s for DPP Exhibil B.doc � � <br /> 012011 <br />