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for CEQA Services Associated with McFadden and Fairview Development Project which would be included as an appendix to the Report. ECORP will complete the Health Risk Assessment within 3 to 6 weeks of receiving a notice -to -proceed and all needed documentation. Task 3 Deliverables: One (1) electronic version of the Health Risk Assessment contained within the Air Quality and Greenhouse Gas Emissions Impact Assessment Report. Task 4 — Noise Impact Assessment The evaluation of noise impacts associated with the Project will be completed by staff members who are noise experts. The applicable noise criteria for the Project Area will be reviewed and discussed for land uses adjacent to, and nearby, the Project Site as they will be the basis for the Project impact determination and whether mitigation is necessary. In order to establish the existing ambient noise levels currently experienced at and around the Project Site, ECORP will conduct up to five (5) short- term (15 minutes) measurements in the Project vicinity. Additionally, the analysis will also cite information provided in the City's General Plan, which contains information on projected traffic noise in the City, to characterize the existing ambient noise environment in the Project vicinity. The combination of the baseline noise survey and information from the General Plan will provide a representative understanding of the current noise environment. Construction would occur during implementation of the Proposed Project. Noise levels from construction sources will be analyzed using the Federal Highway Administration Roadway Construction Noise Model and based on the anticipated equipment to be used. In order to evaluate the potential health -related effects (physical damage to the ear) from construction noise, construction noise will be evaluated in terms of hourly equivalent continuous noise levels (Leq) and the frequency of occurrence at the nearby residences. In addition to construction noise, an analysis of vibration impacts will be prepared based on the California Department of Transportation's vibration analysis guidance. The evaluation of the Project's contribution to noise increases over existing conditions will be addressed. The predominate source of onsite noise would include internal traffic maneuvering, standard parking lot noise, and refueling activities. The analysis of onsite noise will rely on the SouncIPLAN 3D noise model, which will be used to calculate the propagation/spread of onsite Project noise levels from onsite Project operations. The SouncIPLAN 3D noise model predicts noise levels based on the location, noise level, and frequency spectra of the noise sources as well as the geometry and reflective properties of the local terrain, buildings, and barriers. A noise contour graphic will be prepared to depict the noise levels at the surrounding receptors. The modeling results and noise contour graphics will be discussed and summarized in the analysis. Another major source of noise associated with the Project would be offsite automobile traffic. Potential noise impacts from vehicular traffic will be assessed using the U.S. Federal Highway Traffic Noise Prediction Model (FHWA-RD-77-108). The 24-hour weighted Community Noise Equivalent ECORP Consulting, Inc. October2024 N 3 F.NVIRONNIFi\TAL CONSULTANTS P23-481.02