Noise Abatement Decision Report. The project is not identified as a Type 1 project under 23 CFR 772 or the Caltrans Traffic Noise Analysis Protocol. Therefore, neither a Noise Abatement Decision Report nor a Traffic Noise Study is required. Standard construction management practices will be adequate to prevent adverse noise impacts during construction.
Noise Abatement Decision Report. This project is not a Type I project, therefore there are no impacts to noise and no requirement for a Noise Abatement Decision Report.
Noise Abatement Decision Report. The Noise Study Report for this project was prepared by ICF International and approved by the Environmental Engineering Branch Chief in October, 2019. There are no sensitive receptors adjacent to the project area. Traffic noise was modelled for existing and design year conditions. Traffic noise levels are predicted to increase by a maximum of 4 decibels, which is less than the threshold of 12 decibels. Results from the NSR indicated that implementation of the interchange improvements will also not result in noise levels that approach or exceed the applicable Noise Abatement Criteria at any modeled receivers. As such, noise abatement was not considered and a Noise Abatement Decision Report is not required for this project.
Noise Abatement Decision Report. Noise abatement was not warranted for this project; therefore, a separate noise abatement study was not conducted.
Noise Abatement Decision Report. The Noise Abatement Decision Report (NADR; approved December 2019, revised September 2020) presents the noise abatement recommendation based on acoustical and non-acoustical feasibility factors and the relationship between noise abatement allowances and the engineering cost estimate. The NADR is based on the project-specific Noise Study Report (NSR; Xxxxxx Xxxxx, December 2019) and Noise Study Report Addendum (Xxxxxx Xxxxx, September 2020). The NSR documents the assessment of existing and future (2045) traffic noise levels at noise- sensitive receptors in the vicinity of the proposed project and identifies whether preliminary noise abatement measures are necessary for the project to comply with State and Federal noise abatement/mitigation requirements. A summary of key information used in making the preliminary noise abatement decision is found in Table 6-4, below. Table 6-4. Summary of Abatement Key Information Barrier Height (feet) Acoustically Feasible? Number of Benefited Receptors Design Goal Achieved? Total Reasonable Allowance Estimated Construction Cost Cost Less than Allowance? 3 6 No 0 No $0 $791,680 No (new) 8 Yes N/A No $0 $922,240 No 10 Yes N/A No $0 $1,052,800 No 12 Yes 4 Yes $428,000 $1,183,360 No 14 Yes 4 Yes $428,000 $1,313,920 No 16 Yes 4 Yes $428,000 $1,444,480 No 4 6 Yes N/A No $0 $1,104,366 No Trail- Township (new) 8 Yes N/A No $0 $1,415,304 No 10 Yes 1 Yes $107,000 $1,733,390 No 12 Yes 1 Yes $107,000 $2,015,736 No 14 Yes 1 Yes $107,000 $2,326,674 No 16 Yes 1 Yes $107,000 $2,601,872 No 5 Laguna Creek (new) 6 Yes N/A No $0 $1,588,744 No 8 Yes N/A No $0 $1,784,992 No 10 Yes N/A No $0 $1,981,240 No 12 Yes 6 Yes $642,000 $2,177,488 No 14 Yes 6 Yes $642,000 $2,373,736 No 16 Yes 6 Yes $642,000 $2,569,984 No 6 Southbound before Xxxxxx Avenue (replacement) 6 No 0 No $0 $993,888 No 8 No 0 No $0 $1,273,216 No 101 Yes N/A No $0 $1,526,560 No 12 Yes N/A No $0 $1,792,896 No 14 Yes 15 Yes $1,605,000 $2,068,976 No 16 Yes 15 Yes $1,605,000 $2,338,560 No 10 Muirwood/ Stonedale (replacement) 6 Yes N/A No $0 $3,351,000 No 8 Yes N/A No $0 $4,468,000 No 101 Yes N/A No $0 $5,585,000 No 12 Yes N/A No $0 $6,702,000 No 14 Yes 34 Yes $3,638,000 $7,819,000 No 16 Yes 55 Yes $5,885,000 $8,936,000 No 7A Trail (new) 6 No 0 No $0 $3,685,800 No 8 No 0 No $0 $4,914,400 No 10 No 0 No $0 $6,143,000 No 12 Yes N/A No $0 $7,371,600 No 14 Yes N/A No $0 $8,600,200 No 16 Yes 9 Yes $963,000 $9,828,800 No 13-Relocated Canterbury 6 No 0 No $0 $1,686,432 No 8 Yes N/A No $0 $2,197,...
Noise Abatement Decision Report. The project does not qualify as a Type 1 project under 23 CFR 772 and it will not cause a traffic noise impact. Consideration of noise abatement is not required. No noise/vibration studies are required. However, because residences are present on both sides of SR 87 measures to reduce construction noise, especially at night, should be considered during the PS&E phase.
Noise Abatement Decision Report. Not applicable to this project as there is no change to the horizontal or vertical alignment, change to the highway capacity or prediction for an increase in traffic volume because of this project in accordance with Title 23, CFR, Part 772 of the Federal Highway Administration (FHWA) standards.
Noise Abatement Decision Report. LSA will update the Noise Abatement Decision Report (NADR) to include noise abatement measures identified for the Design Variations. The estimated noise barrier construction cost and nonacoustical factors related to feasibility will be obtained from the project engineer (Xxxxxxx Xxxxx). The report will update the summary of NSR results, the engineer’s cost estimate for the evaluated abatement, nonacoustical factors related to feasibility, preliminary noise abatement decisions, and secondary effects of abatement (e.g., impacts on cultural resources, scenic views, agriculture, hazardous materials, and biology).
