Common use of Noise Study Report Clause in Contracts

Noise Study Report. TAHA will prepare a Noise Study consistent with the Caltrans Traffic Noise Analysis Protocol (April 2020). This process will begin with the preparation of a Work Plan to be approved by Caltrans. The Work Plan will identify traffic data, sensitive receptors (e.g., residences), noise monitoring locations, and methodology. The scope includes a series of short-term 20-minute measurements and up to two long- term 24-hour measurements. Construction noise will be assessed based on maximum equipment levels and frequency of occurrence near sensitive receptors. The noise levels will consider construction phase, engine type (diesel or gasoline), horsepower, load factor, and percentage of time in use. The construction section will discuss Caltrans Standard Specifications and local noise regulations. If necessary, avoidance and/or mitigation measures will be included to minimize or eliminate adverse construction noise impacts. Changes in operational noise levels will be assessed using Traffic Noise Model (TNM). The baseline noise condition will be estimated using traffic counts and speed information obtained during monitoring activities. No Build and Build Alternatives will be modeled using traffic conditions that generate the highest noise levels, vehicle mix, speed, and roadway configuration. The roadway configuration will be precisely based on engineering drawings. Noise abatement measures (soundwalls) will be evaluated based on benefits to receptors, acoustical feasibility, and reasonableness allowances. The Work Plan will set the framework for the analysis and minimize the potential for complications. ▇▇▇▇ will use the Work Plan to coordinate extensively with Caltrans staff to discuss and quickly resolve complications. As part of this task, ▇▇▇▇ will prepare a Draft Noise Abatement Decision Report (NADR) using information from the Noise Study Report, other relevant environmental studies, and design considerations. The NADR will include: • Noise abatement reasonableness allowances presented in the Noise Study Report. • Acoustical feasibility of noise abatement presented in the Noise Study Report. • Locations and dimensions of evaluated noise barriers. • Approved cost estimates of acoustically feasible noise abatement. • Non-acoustical feasibility issues of proposed noise abatement based on the best available design information available. • Effects of abatement, including effects on cultural resources, scenic views, hazardous materials, biological resources, and other known social, economic, legal, and technical factors. The NADR summarizes key information from the Noise Study Report and provides recommendations for soundwalls based on feasibility, number of benefited receptors, and cost. Complications are not anticipated as the Noise Study will be approved by Caltrans prior to preparation of the NADR. The Final NADR will be signed by the project engineer after completion of the Noise Study and prior to publication of the draft environmental document. The scope of work includes responding to one round of team comments and two rounds of Caltrans comments. • NSR (One electronic file). • NADR (One electronic file)

Noise Study Report. TAHA will CONSULTANT shall prepare a traffic noise study to assess potential impacts resulting from construction and operation of the project with respect to CEQA guidelines. The following tasks will be included in the noise assessment: • Measure Existing Noise Study consistent with Levels. Existing noise levels will be monitored at up to 5 representative receiver locations along the Caltrans Traffic Noise Analysis Protocol (April 2020)study area to quantify existing worst- hour noise levels and to provide data for model calibration purposes. This process Residential land uses located along ▇▇▇▇▇▇▇▇ ▇▇▇▇ and the associated single-family residential neighborhood will begin with be the preparation focus of a Work Plan the noise analysis. The remainder of the land uses within the project limits appear to be approved non-noise sensitive commercial land uses. These data will be compared to data previously collected by Caltransothers in 2009. The Work Plan 2009 data will identify traffic databe used to the extent feasible. • Establish Significance Thresholds. Applicable state and local noise-related plans, sensitive receptors (e.g., residences), noise monitoring locationspolicies, and methodologystandards will be summarized. Based on the regulatory requirements and widely accepted methods for determining a “substantial increase” in ambient noise, significance criteria for evaluating project impacts will be established. • Calculate Future Noise Levels. Noise modeling will be conducted to calculate future traffic and construction noise levels throughout the project corridor. Traffic noise levels will be modeled with SoundPLAN and/or FHWA’s TNM traffic noise model to calculate the overall traffic noise levels and the noise increase attributable to the project. The scope includes a series of short-term 20-minute measurements model will be calibrated to measured noise and up traffic conditions and then used to two long- term 24-hour measurementspredict future noise levels, taking into account future traffic volumes, lane configurations, and speeds. Construction noise will be assessed based on maximum equipment levels calculated utilizing the Roadway Construction Noise Model (RCNM). • Assess Impacts. Noise and frequency vibration impacts that could result from construction and operation of occurrence near sensitive receptors. The noise levels will consider construction phase, engine type (diesel or gasoline), horsepower, load factor, and percentage of time in use. The construction section will discuss Caltrans Standard Specifications and local noise regulations. If necessary, avoidance and/or mitigation measures the project will be included to minimize or eliminate adverse assessed. Predicted future traffic and construction noise impacts. Changes in operational noise and vibration levels will be assessed using Traffic Noise Model (TNM). The baseline noise condition will be estimated using traffic counts and speed information obtained during monitoring activities. No Build and Build Alternatives will be modeled using traffic conditions that generate compared to applicable significance thresholds established by the highest noise levels, vehicle mix, speed, and roadway configuration. The roadway configuration will be precisely based on engineering drawings. Noise abatement measures (soundwalls) will be evaluated based on benefits to receptors, acoustical feasibility, and reasonableness allowances. The Work Plan will set the framework for the analysis and minimize the potential for complications. City of San ▇▇▇▇ General Plan and Municipal Code, as well as other industry-standards as appropriate. The potential increase in traffic noise in the surrounding community will use also be evaluated. • Develop Mitigation Measures. If future noise levels exceed the Work Plan significance criteria developed for the project, we will recommend measures to coordinate extensively with Caltrans staff be included in the design of the project to discuss reduce noise levels to acceptable levels. Mitigation will be presented for project construction activities and quickly resolve complications. As part of this task, ▇▇▇▇ will prepare a Draft Noise Abatement Decision Report (NADR) using information for operational noise impacts resulting from the Noise Study Report, other relevant environmental studies, and design considerations. The NADR will include: • Noise abatement reasonableness allowances presented in the Noise Study Report. • Acoustical feasibility of noise abatement presented in the Noise Study Report. • Locations and dimensions of evaluated noise barriers. • Approved cost estimates of acoustically feasible noise abatement. • Non-acoustical feasibility issues of proposed noise abatement based on the best available design information available. • Effects of abatement, including effects on cultural resources, scenic views, hazardous materials, biological resources, and other known social, economic, legal, and technical factors. The NADR summarizes key information from the Noise Study Report and provides recommendations for soundwalls based on feasibility, number of benefited receptors, and cost. Complications are not anticipated as the Noise Study will be approved by Caltrans prior to preparation of the NADR. The Final NADR will be signed by the project engineer after completion of the Noise Study and prior to publication of the draft environmental document. The scope of work includes responding to one round of team comments and two rounds of Caltrans comments. • NSR (One electronic file). • NADR (One electronic file)project.