Agmt21 Environmental Science Associates Transit District

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Proposed Work Program June 2021 City of Redwood City / Transit District Subsequent EIR 13 Environmental science associates REV: 06-22-21 MI noise environment at the project site by collecting up to 10 short-term (20-minute) noise measurements in the DTPP area and at receptor locations in the vicinity. Federal, State and City noise policies, regulations, as they would pertain to development under the projects will be summarized. ESA will estimate the noise levels likely to be generated by construction equipment associated with development under the project. Predicted noise levels will be assessed relative to existing standards contained in the City noise ordinance that limit construction noise. Construction impacts will also be assessed in terms of the increase over existing ambient noise levels using the Roadway Noise Construction Model and provided for a series of assumed distances and presented in a tabular format. ESA will also provide a discussion of construction-related vibration impacts that will address the potential for building damage to adjacent structures as well as for annoyance to adjacent receptors. Operational noise analysis will also generally describe potential noise that may result from stationary sources of (e.g., mechanical equipment operation, deliveries). ESA will calculate the change in noise levels due to existing plus project and cumulative traffic along up to 10 street segments most affected by traffic for the SEIR. Algorithms of the noise prediction model of the Federal Highway Administration (FHWA) will be used to determine whether there would be significant project or cumulative effects on noise levels along these roadway segments. Noise and vibration abatement measures from the DTPP Final EIR will be reviewed as appropriate, and any additional practical and feasible mitigation, as needed, will be identified for noise and vibration impacts associated with the project. Air Quality The DTPP Final EIR identified potentially significant but mitigable air quality impacts under the DTPP associated with sensitive receptors’ exposure to toxic air contaminants (TACs) during operation (mitigated by implementation of General Plan policies and programs related to filtration, and for preparation of health risk analyses for applicable projects), and odors (mitigated by implementation of odor reduction measures). The SEIR Setting section will update any pertinent changes to the DTPP Final EIR related to regulatory background, analysis approach, and significance thresholds. ESA will address air quality impacts associated with changes to the DTPP as a result of the Transit District. The Bay Area Air Quality Management District (BAAQMD) updated its 2010 CEQA Guidelines (referenced in the 2010 DTPP Final EIR) in 2017. The significance criteria for evaluating impacts from plans has not changed in the 2017 update, and includes the following: •Consistency with the current air quality plan, and •Comparison of project vehicles miles traveled (VMT) growth to project population growth. ESA will use VMT values provided by the transportation analysis conducted in support of the SEIR to evaluate VMT growth compared to population growth. In addition, policies and control measures from the BAAQMD’s most recent, 2017 Bay Area Clean Air Plan (“Spare the Air and Cool the Climate”) will be compared to those included in the proposed projects for evaluation of consistency. Impacts will be discussed qualitatively in comparison to these above significance criteria. Mitigation measures included in the DTPP Final EIR will be evaluated and updated as necessary, based on potential changes to impacts from the Transit District. In addition, ESA will include a qualitative analysis of criteria pollutant emissions and health risks from toxic air contaminants (TACs), given that Individual development projects in the DTPP area under the Transit District ATTY/AGR.2021.149/ESA (Transit District CEQA) (Page 23 of 26)