Appendix A Noise Abatement Decision Report

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ter 2. Results of the Noise • Receptor R-46: This receptor location represents an existing single-family residence on the southbound side of Fairview Street between West 12th Street and the Santa Ana River. Currently, a 5.7 ft high existing wall (EW No. 9) shields this residence. One noise barrier (NB No. 6) was modeled along the private property line on the southbound side of Fairview Street to shield this residence. • Receptor R-51: This receptor location represents Fairview Triangle on the southbound side of Fairview Street between West 12th Street and the Santa Ana River. Currently, no wall shields Fairview Triangle. Because there is a driveway and pedestrian access onto Fairview Street, it is not feasible to abate traffic noise from Fairview Street with noise barriers. 2.2. Locations for Evaluated Noise Abatement Noise abatement measures such as noise barriers were considered in order to shield receptors within the study area that would become or would continue to be exposed to traffic noise levels approaching or exceeding the NAC. Noise barriers were analyzed for each of these receptor locations. Depending on the location of the potential barrier and existing barrier height, noise barrier heights from 6 to 16 ft were analyzed at 2 ft increments. The location of the modeled noise barrier is shown on Figure 2-2. The following noise barriers were analyzed to shield receptor locations that would be exposed to traffic noise levels approaching or exceeding the NAC for the Future Build conditions: • NB No. 1: A 169 ft long barrier along the right-of-way and private property line on the northbound side of Fairview Street between Civic Center Drive and 9th Street was analyzed to shield Receptor R-5. • NB No. 2: A 129 ft long barrier along the right-of-way and private property line on the southbound side of Fairview Street between Civic Center Drive and 9th Street was analyzed to shield Receptor R-8. • NB No. 3: A 113 ft long barrier along the right-of-way and private property line on the southbound side of Fairview Street between West 9th Street and West 12th Street was analyzed to shield Receptor R-14. • NB No. 4: A 171 ft long barrier along the right-of-way and private property line on the southbound side of Fairview Street between West 9th Street and West 12th Street was analyzed to shield Receptor R-23. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 18 Fairview Street Improvements from 9th Street to 16th Street and Bridge Replacement Project Noise Abatement Decision Report