RES 211231 Exhibit A - Laserfiche WebLink

City of Pleasanton–10x Genomics Project Environmental Checklist and Initial Study/Mitigated Negative Declaration Environmental Evaluation FirstCarbon Solutions 105 Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480024/ISMND/wp/21480024 10x Genomics Project Full Screencheck ISMND.docx Policies Policy 1 Require new projects to meet acceptable exterior noise level standards. • Program 1.1: Use the normally acceptable designation and text description contained in Table 11-5 [Table 18 in this document] “Noise and Land-Use Compatibility Guidelines,” to determine the acceptability of new development and to determine when noise level standard of 60 dBA Ldn for exterior noise in private or shared outdoor use areas studies are required. For new single-family residential development, maintain a maximum day/night average excluding front yards. For new multi-family residential development, maintain a maximum standard of 65 dBA Ldn in community outdoor recreation areas (or 60 dBA Ldn when the outdoor noise is due to aircraft). Noise standards are not applied to balconies or front yards. In the Downtown, the City Council will evaluate the requirement to achieve these standards on a case-by-case basis. • Program 1.3: Use noise guidelines and contours to determine the need for noise studies, and require new developments to construct or pay for noise attenuation features as a condition of approving new projects. An exterior increase of more than 4 decibels is considered significant. • Program 1.5: Encourage the use of setbacks, landscaped earth berms, and frontage roads where feasible to reduce exterior noise levels. The use of sound walls should only be used where other mitigation measures are not feasible. Where sound and frontage road walls are needed, design and high quality materials, as well as landscaping, should be used to mitigate their visual impact. Policy 4 Control noise at its source to maintain existing noise levels, and in no case to exceed acceptable noise levels as established in the Noise and Land Use Compatibility Guidelines. • Program 4.6: Require developers of new projects that would significantly increase noise in nearby homes to mitigate noise impacts with walls, berms or other measures, and/or to provide noise attenuating measures in the homes. Table 18: Noise and Land Use Compatibility Guidelines Land Use Category Exterior Noise Exposure (Ldn) 55 60 65 70 75 80 Single-Family Residentiala Multi-Family Residential, Hotels, and Motelsa