SR 06:101 - Laserfiche WebLink

~ Exhibit A Strategies for mmgating the project's construction-phase and operational emissions of air pollutants will be identified. BAAQMD recommendations will be the primary source for such mitigation strategies. Noise. The noise environment in the vlclmty of the project site is affected by traffic on Interstate 580, and to a lesser extent, aircraft flyovers from the Livermore Municipal Airport and activities associated with the Kaiser Sand & Gravel operations. EIP will have primary responsibility for the noise assessment, although the project sponsor will have had Charles M. Salter Associates prepare a noise study for the senior-care community. The noise setting discussion will briefly summarize the nature of environmental noise at the project site, and will introduce acoustical terms that relate to the analysis. It will also define the existing noise environment in the project vicinity by using and supplementing site-specific noise monitoring from the Charles Salter study. Additional monitoring locations may be selected to include the location future sensitive noise receptor (such as future homes) and along roadways near sensitive receptors where traffic volumes would be expected to increase appreciably because of the proposed project. Noise levels from the airport will be characterized by summarizing information available in the 1996 Supplemental EIR for the residential project and from more recent studies conducted for the airport, as determined by EIP through interviews with the airport operator. Information on the Airport Protection Area, which was codified as part of the Airport Land Use Commission Policy Plan in 1993, will be presented. Other relevant state and local noise standards and guidelines, including those established in the City's Noise Element and the City's Noise Ordinance (#946, Title 4, Chapter 9), will also be summarized by EIP. EIP will qualitatively evaluate potential noise impacts from construction phases of the project components. The concern would be protecting residences and other uses from excessive project construction noise. Standards for acceptable construction noise exposure will be taken from the City's Noise Ordinance. Measures for minimizing construction noise impacts will be developed (e.g., construction access could be routed away from existing or future residential uses, set -down areas can be located away from residential uses, etc). EIP will evaluate noise levels from project and future traffic in the vicinity of the most severely affected noise-sensitive receptors. The US Department of Transportation's Traffic Noise Model (TNM) initialized with site-specific traffic data, will be used to estimate noise at affected residential uses. It IS expected that the proposed senIor community would have a sound wall along Interstate 580, as does the Somerset residential development immediately west of the project site. TNM will be used to estimate future noise levels at the senior residential units, with and without a sound wall, and accounting for the elevation change between Interstate 580 and the project building site. Both interior and exterior noise levels will be estimated to determine the potential for excessive noise exposure. TNM will also be used to estimate potential effects of traffic from other nearby roadways, including Stoneridge Drive and EI Charro Road. EIP Associates 2-13