Appendix A Noise Abatement Decision Report

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Chapter 3. Preliminary Noise Abatement Decision ........................................................................................................ 3.2. Non -Acoustical Factors Relating to Feasibility Nonacoustical factors relating to feasibility that must be considered during the construction of noise barriers include: geometric standards, safety, maintenance, security, drainage, geotechnical considerations, and utility relocations. 3.2.1. Build Alternative The nonacoustical factors relating to the feasibility of NB Nos. 2 through 5 are: • Geometric Standards: NB Nos. 2 through 5 would not affect the geometric standards of adjacent roadways. • Safety: NB Nos. 2 through 5 would not affect sight distance for vehicular or pedestrian traffic. • Maintenance: Temporary construction easements would be required for NB Nos. 2 through 5. The property owner would be responsible for maintaining the private side of the barrier while the City would be responsible for maintaining the public side of the barrier. • Security: NB Nos. 2 through 5 would be in the same alignment as an existing wall and would not change the security conditions of the site. • Drainage: NB Nos. 2 through 5 would not affect the existing and proposed drainage system. • Geotechnical Considerations: NB Nos. 2 through 5 would be constructed at a similar grade to the existing condition. • Utility Relocations: Construction of NB No. 2 would not have the potential to interfere with existing utilities. However, the construction of NB Nos. 3, 4, and 5 have the potential to interfere with existing utilities because there are overhead electrical lines in the area. Installation of piles during the construction of NB Nos. 3, 4, and 5 may require temporary bypass power lines to be constructed. Although utility relocations are not anticipated, further investigation would be required during the Plans, Specifications, and Estimates (PS&E) phase. 3.3. Preliminary Recommendation and Decision The preliminary noise abatement decision presented in this report is based on preliminary project alignments and profiles, which may be subject to change. As such, the physical characteristics of noise abatement described herein may also be subject to change. If pertinent parameters change substantially during the final project design, the preliminary noise abatement decision may be changed or eliminated from the final project design. A final decision to construct noise abatement will be made by Fairview Street Improvements from 9th Street to 16th Street 27 and Bridge Replacement Project Noise Abatement Decision Report