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Environmental Impacts of the Proposed Changes to the Original Project Addendum to the City of Pleasanton Downtown Specific Plan Final Environmental Impact Report 53 equivalent to sound pressure level (SPL) of 65 dBA at 3 feet (see Appendix F for manufacturer’s specifications). Pursuant to PMC Section 9.04.030 and 9.04.040, project impacts would be significant if exterior noise levels exceed 60 dBA at a residential property and 70 dBA at a commercial property at any point outside of the property plane. For purposes of this analysis, the closest three units to the sensitive receptor were analyzed. Rooftop mounted HVAC units would be located as close as 140 feet from the nearest residential property west of the project site, and 20 feet from the commercial properties east of the project. Combined noise levels of three HVAC units generated by rooftop HVACs would be approximately 47 dBA Leq at 140 feet and 66 dBA Leq at 20 feet, which would not exceed exterior daytime and nighttime noise standards of 60 dBA Leq for residential properties and 70 dBA Leq for commercial properties. Ground-mounted HVAC units on the proposed residential units would be located as close as 15 feet to the residential property to the west. Noise levels of a residential HVAC unit would be approximately 51 dBA Leq at 15 feet to the residential property to the west, which would not exceed the exterior daytime and nighttime noise standard of 60 dBA Leq at residential properties. In addition, this is a conservative analysis that does not consider possible mechanical equipment shielding or attenuated from the rooftop edges. Therefore, impacts related to HVAC equipment noise would be less than significant. TRAFFIC NOISE The Trip Generation Assessment prepared by the City of Pleasanton was used to estimate traffic noise associated with the project. Refer to Section 5.12, Traffic and Transportation, for the Trip Generation Assessment. As discussed in Section 5.12, Traffic and Transportation, and shown in Table 10, the net vehicle trips would decrease, given the removal of the existing restaurant currently occupying the project site The project would not make substantial alterations to roadway alignments or substantially change the vehicle classifications mix on local roadways. Therefore, the primary factor affecting off-site noise levels would be increased traffic volumes. In order for a barely perceptible noise increase of at least 3 dBA to occur, the project would need to result in a doubling of traffic on the affected road segment. Given that vehicle trips generated on the project site would decrease as a result of the project (see Section 5.12, Traffic and Transportation), traffic noise on local roadways, such as St. John Street, would also decrease. Therefore, the traffic noise from the project would not result in a noise level increase and traffic noise would be below the barely perceptible noise increase of 3 dBA and impacts would be less than significant. Airport Noise The project site remains outside the vicinity of an airport land use plan, public airport, or private airstrip, and no impact would occur. Effects and Mitigation Measures No new or substantially more severe significant effects would occur related to noise compared with those identified in the Final EIR, and no new or revised mitigation measures are necessary. The Final EIR would continue to apply to the Barone’s project. Operational and construction noise impacts would remain less than significant and would not require mitigation.