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FI RSTCARBO N Proposal SOLU I 10 \S' Background and Regulatory Information The general characteristics of sound and the categories of audible noise will be described.The City's regulatory framework related to noise, including applicable plans, policies, and standards will be summarized.The dominant noise source on the project site is traffic from surrounding roadways, therefore, existing noise environment will be documented through traffic noise modeling. Because the project is an expansion of an existing land use and is not considered a sensitive receptor this Scope of Work does not include an ambient noise monitoring effort. Should noise measurements be required, that effort will be covered under a separate scope and fee. Construction Noise and Vibration Impact Analysis Construction would involve the short-term operation of heavy equipment in the vicinity of sensitive receptor land uses. EPA-recommended noise emission levels will be used for the construction equipment.The construction noise impact will be evaluated in terms of maximum levels (Lmax) or hourly equivalent continuous noise levels (Leq) and their frequency of occurrence. Noise analysis requirements and thresholds of significance will be based on the sensitivity of the project area and the City's noise ordinance specifications. FCS will also analyze potential vibration impacts from construction activities associated with development that could occur with implementation of the proposed project. FCS will utilize the methodology and thresholds contained in the Transit Noise and Vibration Impact Assessment Manual, prepared by the Federal Transit Administration (FTA)for determining construction-related groundborne vibration impacts. Operational Noise Impact Analysis A quantitative assessment of noise impacts from project-specific and cumulative vehicular traffic trips will be performed.Traffic noise impacts will be assessed using the U.S. Federal Highway Traffic Noise Prediction Model (FHWA-RD-77-108, December 1978). Required model input data include without- project and with-project average daily traffic(ADT)volumes on adjacent roadway segments, based on the traffic study prepared for the project.Traffic impacts will be evaluated based on whether the project's increase in traffic noise levels in the project vicinity would exceed the standards established in the City's General Plan or Noise Ordinance. Potential noise impacts from project-related stationary noise sources, such as new mechanical system operations and new parking lot activities,will also be evaluated to determine if the proposed project would generate a substantial increase in ambient noise levels in excess of the City's operational noise performance standards. Data Needs and Assumptions This Scope of Work assumes necessary project data, including site plan and mechanical system plans,will be provided by the applicant. This analysis will be completed within 5 weeks of receipt of the necessary project data and the client-approved project description. If changes are made to the project description that would require re-modeling for the above scope of work, it would be accomplished as an additional service, not included in this Scope of Work. NORTH AMERICA I EUROPE I AFRICA I AUSTRALIA I ASIA FIRSTCARBONSOLUTIONS.COM 8