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4 Environmental Analysis <br /> 4.13 Noise <br /> 1/Root Mean Square Vibration Velocity in VdB reference to 1x10-6 inch/second. <br /> Source:FTA(2018) <br /> The degree of annoyance cannot always be explained by the magnitude of the vibrations alone. <br /> Phenomena, such as ground-borne noise and rattling, visual effects (e.g., movement of hanging <br /> objects), and time of day, all influence the response of individuals. The American National <br /> Standards Institute (ANSI) and the International Organization for Standardization (ISO) have <br /> developed criteria for evaluation of human exposure to vibrations. The recommendations of these <br /> standards and other studies evaluating human response to vibrations have been incorporated <br /> into the Federal Transit Administration's (FTA) Transit Noise and Vibration Impact Assessment <br /> Manual (2018). The criteria within this manual are used to assess noise and vibration impacts <br /> from transit operations. <br /> 4.13.1.3 Sensitive Receptors <br /> Human response to noise varies considerably from one individual to another. Effects of noise at <br /> various levels can include interference with sleep, concentration, and communication, and can <br /> cause physiological and psychological stress and hearing loss. Given these effects, some land <br /> uses are considered more sensitive to ambient noise levels than others. In general, residences, <br /> schools, hotels, hospitals, and nursing homes are considered to be the most sensitive to noise. <br /> These locations are referred to as noise-sensitive receptors (NSA). Places such as churches, <br /> libraries, and cemeteries,where people tend to pray, study, and/or contemplate, also are sensitive <br /> receptors. Commercial and industrial uses are considered the least noise-sensitive. As shown in <br /> Figure 4.13-1, there are multiple residences near the proposed Project site. The NSAs are also <br /> divided into participating and non-participating properties. The participating properties have an <br /> agreement with Griffith Energy, LLC in which the property owner accepts that Project noise levels <br /> may be higher than regulatory thresholds at their property. <br /> Griffith Energy Storage Project 4.13-4 Tetra Tech/2022120675 <br /> Draft Environmental Impact Report August 2023 <br />