SR 05:258 - Laserfiche WebLink

Fencing and Retaining Walls The retaining wall, if needed, shall be wood and, as conditioned, all fencing on top of the retaining wall shall be level. Staff has added a recommended condition of approval that the applicants revise the plans such that the six-foot tall fence not be located in the front yards, that the rear yards for each unit be entirely fenced, and that all fences have gates for exiting as required by the Uniform Building Code. The applicants have agreed to this condition of approval. Noise A noise study dated "Received June 25, 2004" by Joshua Roper with Charles M. Salter and Associates was prepared for the project. Per the Pleasanton General Plan, residential interior noise levels should not exceed DNL 45 dB. The noise study concludes that the applicants will need to incorporate sound mitigation measures in the construction of the buildings to reduce estimated interior noise levels. As part ofthe project, the applicants have agreed to design the dwelling units such that they would adhere to a DNL 45 dB interior noise level. Mitigation measures may include constructing with larger framing materials, providing more insulation, increasing the window and door noise ratings, etc. Staff has added a recommended condition of approval to address this. The study by Charles M. Salter and Associates states that the exterior noise levels at the project would range from approximately DNL 60 to 66 dB by the year 2025. Existing exterior noise levels at the site are approximately DNL 60 to 65 dB. Per the report, the 1 dB increase would be due to an anticipated traffic increase on Peters Avenue and St. John Street over several years. Per the General Plan, the goal for maximum outdoor noise levels in residential areas is a DNL of 60 dB. However, the General Plan acknowledges that this may not be reached in all residential areas for it may not be within the realm of economic or aesthetic feasibility. The General Plan states that this goal should generally be applied where outdoor use is a major consideration (such as in a backyard). The General Plan states that this standard should not normally be applied to small decks associated with multi-family residential units due to the lack of use of these decks even in quiet areas. For this reason, staff does not believe that additional noise mitigation measures are necessary for the proposed decks at the front of the buildings. The report states that the rear yards would be shielded from street noise and would be approximately DNL 60 dB, and consistent with the General Plan. There is a railroad approximately 300 feet west of the project site. The ACE train as well as freight trains use the railroad. The General Plan states that if a railroad is a noise source, then the exterior noise exposure criterion should not exceed DNL 70 dB. As stated above, the DNL would range from approximately 60 to 66 dB. Case No. PUD-37 Planning Commission Page - 17 -