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*:/:I1-3111ira <br />Table 6 Noise Levels During Construction <br />Construction Activity Phase <br />Residence to North at <br />70 feet' <br />Residence to South at <br />100 feeti <br />Residence to East at <br />225 feet' <br />Residence to West at <br />280 feet' <br />Grading <br />78 dBA <br />75 dBA <br />68 dBA <br />66 dBA <br />Building Construction <br />70 dBA <br />67 dBA <br />60 dBA <br />58 dBA <br />Paving <br />74 dBA <br />71 dBA <br />64 dBA <br />62 dBA <br />Source: Roadway Constructon Noise Model (RCNM), FHWA, 2008. <br />Note: <br />1 As measured from the acoustical center of the construction site to the nearest sensitive receptor property line <br />Residents surrounding the replacement park sites would experience increased noise levels during construction. <br />However, impacts would not be considered significant because construction activities would occur during the <br />daytime hours when many people would be out of their houses, and not in the evening or latenighthours <br />when residential land uses are more sensitive to noise, consistent with the City of Santa Ana's Municipal Code, <br />Section 18.314(e). Additionally, the following best management practices are expected to be taken to further <br />reduce noise levels during construction. <br />■ Prior to the start of and for the duration of construction, the contractor shall properly maintain and time <br />all construction equipment in accordance with the manufacture's recommendations to minimize noise <br />emissions. <br />■ Prior to use of any construction equipment, the contractor shall fit all equipment with properly operating <br />mufflers, air intake silencers, and engine shrouds no less effective than as originally equipped by the <br />manufacturer. <br />■ The construction contractor shall post a sign, clearly visible at the site, with a contact name and telephone <br />number of the City authorized representative to respond in the event of a noise complaint. <br />■ During construction, the construction contractor shall place stationary construction equipment as far from <br />sensitive receptors as practical and feasible. <br />Given the temporary nature of the construction noise, and the adherence to the City of Santa Ana's Municipal <br />Code for construction activities, the proposed project would result in a less than significant noise impact. No <br />mitigation measures are required. <br />Operational Noise Impact <br />Noise Compatibility <br />Raitt Street Site <br />This park would be a walk-up, pedestrian park that would primarily serve the local neighborhood. The park <br />would provide a skate area, restroom, walking path, playground equipment for a tot lot, exercise area, benches <br />aid tables. Stationary noise would be generated from children playing, people exercising, skating, and people <br />75C-113 <br />