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Less Than Significant <br />The project site is located in an area characterized with <br />commercial land uses. There are no sensitive receptors within <br />the vicinity of project site. The existing noise environment <br />surrounding the project site is primarily influenced by traffic <br />noise from the SR-55 Freeway. The proposed project involves the <br />construction of commercial land uses, which is allowed in areas <br />that experience increased levels of noise. The project has been <br />designed to minimize interior noise impacts through a <br />combination of setbacks and conventional building practices. It <br />is anticipated that interior noise levels would realize a 20 dB <br />reduction. <br />The operation of the proposed project would not significantly <br />increase noise levels within the project site. A significant <br />increase in noise would be a 3dB increase over existing noise <br />levels. Typically, a 3db increase in noise levels occurs when <br />existing traffic volumes are doubled. The proposed project would <br />not double existing traffic volumes within the project area. <br />Therefore, implementation of the proposed project would not <br />result in a 3db increase to existing noise levels within the <br />project area. <br />B. 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 />Less Than Significant <br />The construction of the structure would involve conventional <br />construction equipment resulting in less than significant ground <br />borne vibration impacts. No mitigation measures are necessary. <br />Implementation of the proposed project would result in short- <br />term construction related noise impacts. Short-term noise <br />impacts would result from site preparation, excavation, grading, <br />and other construction operations. The construction-related <br />short-term noise levels would be higher than the existing or <br />ambient noise levels in the project area today, but would no <br />longer occur once construction of the project is complete. <br />The Municipal Code recognizes that some forms of noise are <br />required for urban development and maintenance and are difficult <br />to control. Section 18-314 (e) exempts noise sources associated <br />23 <br />7~,q-~3 <br />