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FIRSTCARBON Proposal SOLOTION5 Operational Noise Impact Analysis A quantitative assessment of noise impacts from project-specific and cumulative vehicular traffic trips will be performed.Transportation noise in the project area is primarily associated with traffic along Happy Valley Road,Alisal Street,and Westbridge Lane. Traffic noise impacts will be assessed using the FHWA Traffic Noise Prediction Model (FHWA-RD-77-108). Required model input data include without- and with-project average daily traffic volumes on adjacent roadway segments,day/night percentages of autos, medium and heavy trucks,vehicle speeds,ground attenuation factors, and roadway widths. Projections of the future traffic Community Noise Equivalent Level (CNEL) along selected roadway segments, based on the traffic study to be prepared for the project,will be provided in a table format to show the distance/contour relationship. Potential long-term operational noise impacts from project-related stationary noise sources, such as new residential mechanical ventilation system operations,will also be evaluated. Summarize Noise Reductions and Significance Findings Mitigation measures designed to reduce short-and long-term noise impacts will be identified where appropriate. Both an evaluation of the potential mitigation measures and a discussion of their effectiveness will be provided.This technical analysis for potential noise impacts will be directly incorporated into the EIR,with noise monitoring readouts and modeling data being placed in the Appendices.This task does not include the preparation of a separate, standalone technical noise study. Task 3.E:Traffic Analysis Study Assumptions Fehr&Peers will prepare an assumptions memorandum detailing proposed transportation analysis assumptions.This task will include estimates of project trip generation,trip distribution, analysis scenarios and locations,forecasting parameters, and significance criteria for review and comment by the project team prior to the commencement of the technical analysis. Analysis scenarios will include an evaluation of conditions with and without the proposed bypass roadway is it is unclear if this roadway is feasible. Data Collection Based on the analysis locations identified in Task 1, Fehr& Peers will retain a traffic count data collection firm to collect 72-hours of roadway segment count data at up to 10 locations and peak period intersection turning movement counts at up to 5 locations. We will conduct field reconnaissance to document the existing roadway network and observe roadway and intersection operations. Impact Analysis The intersection peak hour level of service at each study intersection will be calculated using the 2000 and 2010 Highway Capacity Manual method. The City of Pleasanton requires use of the HCM 2000 NORTH AMERICA I EUROPE I AFRICA 1 AUSTRALIA I ASIA 12 FIRSTCARBONSOLUTIONS.COM