3_Exhibit C_ADDENDUM ONLY - Laserfiche WebLink

City of Pleasanton—Stoneridge Mall Residential Project Section 15183 Checklist/15164 Addendum CEQA Checklist FirstCarbon Solutions 147 Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480017/Consistency Checklist/21480017 Stoneridge Mall Residential Project Checklist Addendum_Updated.docx may exceed the applicable 50/55 dB Lmax criteria within habitable rooms. The Prior EIR concluded that implementation of MM 4.J-7 would reduce potential aircraft/airport noise impacts to a less than significant level. Analysis of Proposed Project The project site is not located within the vicinity of a private airstrip. The project site is also not located within the 55 dBA CNEL noise contours of any public or public use airport. As such, operation of the proposed project would not expose people residing or working at the project site to excessive noise levels associated with public airport or public use airport noise. Therefore, no impact related to exposure of persons residing or working at the project site to excessive noise levels associated with airport activity would occur. d) Noise in Excess of General Plan or Municipal Code Standards Prior EIR Conclusions This exact checklist question was not discussed in the Prior EIR, but the topic was discussed in Impact 4.J-3, Impact 4.J-5, and Impact 4.J-6. Train Noise Impacts The Prior EIR found that train-related noise exposure at Sites 8, 11, 14, 18, and 21, which are in close proximity to the UPRR mainline tracks, may exceed the applicable 70 dB Ldn exterior noise exposure limit and 50 dB Lmax/55 dB Lmax criteria within habitable rooms. The Prior EIR concluded that MM 4.J- 3 would reduce train-related noise impacts to a less than significant level. Traffic Noise Impacts The Prior EIR found that developments adjacent to several of the studied roadways may experience traffic noise exposure in excess of 65 dB. Given a worst-case exterior-to-interior noise level reduction of 20 dB provided by project buildings, interior noise exposure could be 45 dB Ldn or higher within some project building. Development on the potential sites for rezoning would be subject to Title 24 of the California Code of Regulations, which requires an interior noise exposure of 45 dB Ldn/CNEL or less within any habitable room and requires an acoustical analysis demonstrating how dwelling units have been designed to meet this interior standard. To allow the project to meet the City and State interior noise requirement of 45 dB Ldn (or less) sound-rated building assemblies may be required at the exterior facades of project buildings. The Prior EIR concluded that implementation of MM 4.J-5b would ensure that interior noise levels are reduced to 45 dB Ldn or less, which would reduce this impact to a less than significant level. Additionally, the Prior EIR concluded that MM 4.J-5c would reduce outdoor noise exposure impacts to a less than significant level. Stationary Source Noise Impacts The Prior EIR found that noise from stationary sources in the vicinity of potential sites for rezoning could exceed the applicable 60 dB Lmax exterior noise exposure limit established within the City Municipal Code. Additionally, some areas are adjacent to industrial/commercial areas and could be subject to loading noise and late or 24-hour operations noise. However, the Prior EIR concluded that