RES 09314 - Laserfiche WebLink

DRAFT GOALS, POLICIES, AND PROGRAMS Goal 1: Reduce noise to acceptable levels throughout the community. Policy 1: Require new projects to meet acceptable exterior noise level standards. Program 1.1: Use the normally acceptable designation and text description contained in Table 11 -5 "Noise and Land -Use Compatibility Guidelines," to determine the acceptability of new development and to determine when noise studies are required. For new single- family residential development, maintain a maximum day /night average noise level standard of 60 dBA Le for exterior noise in private or shored outdoor use areas excluding front yards. For new multi- family residential development, maintain a maximum standard of 65 dBA Lja in community outdoor recreation areas (or 60 dBA Ldn when the outdoor noise is due to aircraft). Noise standards are not applied to balconies or front yards. In the Downtown, the City Council will evaluate the requirement to achieve these standards on a case -by -case basis. Program 1.2: Where high noise levels are the result of railroad trains, an exterior noise level of up to 70 dBA Lai would be considered compatible with most residential development recognizing that day -night average noise levels are controlled by intermittent, loud events. Vibration sensitive land uses located near the Union Pacific Railroad tracks should demonstrate compatibility with the Federal Transit Administration's vibration impact criteria by completing site specific vibration analyses. Program 1.3: Use noise guidelines and contours to determine the need for noise studies, and require new developments to construct or pay for noise attenuation features as a condition of approving new projects. An exterior increase of more than 4 decibels is considered significant Program 1.4: Require noise studies for future projects to use a consistent format, to include a description of the methodology and assumptions used, to analyze alternative noise mitigation measures, and to evaluate the effectiveness of the mitigation following implementation. Program 1.5: Encourage the use of setbacks, landscaped earth berms, and frontage roads where feasible to reduce exterior noise Levels. The use of soundwalls should only be used where other mitigation measures are not feasible. Where sound and frontage loads walls are needed, design and high quality materials, as well as landscaping, should be used to mitigate their visual impact. 11 Noise Element part 5 1 1-24