Agmt18 Stantec Consulting Services, Inc.

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REV: 07-15-2021 VR Cultural Resources. Consultant will prepare the Cultural Resources section of the CEQA document as referenced in Task 2A.1, Cultural Resources. Hazardous Materials. The existing uses on the Project are related to automotive business and operations and could potentially impact the future residents and children. Consultant will prepare the Hazards and Hazardous Materials sections of the CEQA document using information available from the City, including the City’s emergency response planning efforts, publicly avoided databases from the California Environmental Protection Agency, Department of Toxic Substances and Control, and the State Water Resources Control Board. Noise. Consultant will develop a noise analysis that will evaluate the Project’s impacts from noise. Major noise sources in the Project area are related to roadways, such as Arguello Street and El Camino Real, Caltrain rail line, existing single-family homes, existing commercial buildings, and activities associated with these uses. Noise increases associated with traffic as well as construction, stationary sources such as HVAC equipment, and general operational activities associated with the Project, need to be evaluated. The noise section of this environmental document will be developed using the following steps: Due to the current situation in California, it is not possible to conduct ambient noise levels at the Project site which would be reflective of future conditions. Therefore, Consultant will use Figure PS-12 “2030 Projected Noise Contours” in the Redwood City General Plan to determine the ambient noise levels experienced at the Project site and at the surrounding sensitive receptors. Sensitive receptors shall be identified through a review of aerial photography. Using the General Plan future ambient noise levels, initial Project information, and general site and exterior façade assumptions, establish initial recommendations to mitigate exterior noise to meet the requirements of the California Building Code for the multifamily housing building and the California Green Buildings Standards Code (CalGreen) for the office space. Using the Project specific traffic count data provided by the traffic assessment and general industry standard practice, determine the potential effect the Project will have on local traffic counts and determine the impact to the neighboring community. Data will be evaluated for anticipated traffic noise during the construction of the Project and from operational traffic noise after the Project is functional. Quantify the fixed-source operational noise generated by the Project to determine potential noise impacts associated with the Project and will identify potential measures to address these impacts in accordance with all Municipal Code and General Plan requirements. Both fixed noise sources, such mechanical equipment, and variable noise sources, such as playground activity, will be considered in the analysis. Consultant will use the Federal Highway Administration Roadway Construction Noise Model (RCNM) to determine potential impacts to surrounding sensitive receptors from short term construction noise. Consultant will provide an assessment regarding Project-related construction and its impact on existing noise sensitive receptors. Using the information contained in the Federal Transit Administration, Transit Noise and Vibration Impact Assessment Guidelines document, determine the potential groundborne vibration impact of the Project construction to nearby sensitive receptors. ATTY/AGR.2021/Amend No. 1/Stantec Consulting Services, Inc. (Page 14 of 21)