Noise Analysis. The Noise Analysis must include direct data collection and noise projection modeling, including use of the Federal Highway Administration (FHA) Traffic Noise Model.
Noise Analysis. The noise analysis will be prepared in accordance with Caltrans SER Volume 1 Chapter 12 and CEQA guidelines as well as the Caltrans’ Traffic Noise Analysis Protocol and Technical Noise Supplement. Prior to initiating the Noise Study Report (NSR), Xxxxxxx Xxxxx will initiate a teleconference call with Caltrans to review and confirm the proposed measurement locations. The NSR will be prepared consistent with the Caltrans Noise Analysis Protocol to address traffic noise impacts on noise-sensitive land uses located within the study area. Short-term (15-minute) noise measurements will be taken at up to two (2) locations to document the existing noise environment, as well as to calibrate the traffic noise model. Xxxxxxx Xxxxx will obtain City approval of the locations of these noise measurements prior to seeking Caltrans approval of the locations. The Federal Highway Administration (FHWA) Traffic Noise Model (TNM) version 2.5 will be used to evaluate traffic noise levels associated with the Existing, Future No Build, and Future Build conditions. The Traffic Noise Study Report shall take into consideration impacts to frequent outdoor uses, as defined by FHWA, and recommend mitigation as appropriate. Recommendations will be made for any required noise abatement measures, including sound walls. As the proposed project would generate construction noise resulting in temporary or periodic increases in ambient noise levels, the Noise Study Report will also address the full range of construction noise potential. This scope excludes the preparation of a Noise Abatement Decision Report (NADR). Deliverable: • Draft/Final Noise Analysis
Noise Analysis. In order to minimize redundant information within the Initial Study and EIR, this section provides an analysis methodology where the air quality, GHG emissions, and noise calculation methodologies and results are incorporated into the EIR, instead of in separate technical studies. However, an Air Quality and GHG Emissions Technical Memo and a Noise Technical Memo that details the calculation methodologies and results can be provided as part of this scope and at no extra cost, if requested. Vista Environmental will provide the following Noise Initial Study Checklist and Discussion services: • Complete the Noise Checklist that details the following checklist questions as potentially significant: o Exposure of persons to or generation of noise levels in excess of standards; and o A substantial temporary or periodic increase in ambient noise levels in the project vicinity. • For the Checklist question of: Exposure of persons to or generation of excessive groundborne vibration or groundborne noise levels, a discussion will be provided that details typical vibration levels created by demolition and construction activities and how these would be below the threshold of perception at the nearest sensitive receptors. The discussion will also detail how residential condominiums are not a known source of vibration and as such would result in a less than significant impact. • For the Checklist question of: A substantial permanent increase in ambient noise levels in the project vicinity, a discussion will be provided that details how the primary source of noise from a residential development is from project generated vehicle traffic on the nearby roadways and how the proposed residential project would generate less traffic than the current commercial designation for the project site and would result in a less than significant impact. • For the Checklist questions of: For a project located within an airport land use plan; and For a project located within the vicinity of a private airstrip, a discussion will be provided that details the distances to the nearest public and private airports and due to these distances impacts will be less than significant. The following Noise EIR Section and Associated Technical Appendix will be provided: • Detail fundamentals of noise that include noise source characteristics, noise propagation, and definition of decibels and other noise descriptors. • Identify applicable noise and vibration regulations and thresholds of significance. • Uti...
Noise Analysis. The CONSULTANT and noise analysis SUBCONSULTANT shall provide assistance to the PROJECT by preparing a CITY required noise analysis for permitting associated with the proposed walls. Coordination between the CONSULTANTS and the CITY is required for the work. Task 5.0 RIGHT-OF-WAY ACQUISITION The CONSULTANT and SUBCONSULTANT shall provide additional Right-of-Way Acquisition services that correspond to the services described in the following sections of this supplemental Scope of Services as required for the completion of the PROJECT.
Noise Analysis. Even though the atomic lattice of the HOPG can be recognized in the force map, Figure 2.4 looks convoluted with a high level of intrinsic noise, which makes it difficult to see the individual atoms in the lateral force image. This noise is also clearly present in the individual friction loop in Fig. 2.4. We may expect the following three sources of instrumental noise: (1) thermal vibrations of the cantilever, (2) noise in the laser used in the interferometry (intensity variations and mode switching) and (3) electronic noise (both in the detection and the scan electronics). In addition to these intrinsic sources of noise, relative vibrational motion of the tip and the sample, resulting from external excitation (acoustic noise and building vibrations) will be introduced when the tip is in contact with the substrate. Here we concentrate on the intrinsic sources by keeping the surface far away from the tip. Figure 2.5 shows a typical noise recording, with the noise signal expressed in equivalent force units. The force signals in Fig. 2.5 were filtered by a low-pass filter, set at a cut-off frequency of 1 kHz, as was used in most of our friction measurements. 400 Noise [nN] 0.0 300 Amplitude [a.u] 200 -0.4 0 20 40 60 80 100 Time [ms] 100 0 0.0 0.5 1.0 1.5 2.0 2.5 Frequency [kHz]
Noise Analysis. The proposed project is not expected to cause a change in existing and projected traffic volumes and vehicle mix but may move the noise source nearer or further away from receptors in the areas of the proposed improvements. Therefore, the Consultant will conduct qualitative noise analysis at sensitive noise receptor locations relative to proposed geometric changes and alignment. Additionally, the Consultant will conduct a qualitative analysis of noise impacts on alternative detour routes and impacts resulting from construction activities. If, based on proposed project alternative designs and right of way needs, noise modeling is warranted, such modeling will be performed for specific areas of concern using Traffic Noise Model Version 2.5. Noise barrier analysis is not included with this scope of service and will be considered “Extra Work”.
