Laserfiche WebLink
B. The developer shall be required to prepare, for City <br /> acceptance, acoustical design guidelines for the custom <br /> lots proposed along Happy Valley Road. Said guidelines <br /> shall contain specific mitigation measures to reduce <br /> noise levels within homes and on at least a portion of <br /> all the custom lots to below the City standards. <br /> Requirements to be met in the design guidelines are as <br /> follows: <br /> <br /> 1. When the location of the home on the lot is being <br /> decided, a noise study shall be conducted to <br /> determine how exterior and interior noise levels <br /> could be reduced below the City of Pleasanton's <br /> exterior and interior noise standards. Outdoor use <br /> areas for each home shall be protected from freeway <br /> noise by the placement of the home on the lot and <br /> the location and design of the outdoor use areas. <br /> <br /> 2. Excess future traffic noise on Happy Valley Road is <br /> a possibility and shall be anticipated by the <br /> provision of a 6-foot continuous sound barrier with <br /> adequate.returns, no holes or gaps in its surface <br /> or at the base, and with a minimum surface weighe <br /> of 3 lbs./sq. ft. This design shall be included <br /> with the Design Review Board house plan <br /> application. <br /> <br /> 9-2: Require Rcoustical Treatment of Second Floor Homes <br /> All second floor homes which would be exposed to an L~ of <br /> greater than 60 dB must be treated to assure that interior <br /> noise levels do not exceed an L~ of 45 dB. An acoustical <br /> engineer shall hired and shall submit a report subject to the <br /> City approval which shows how this standard will be <br /> maintained. <br /> <br /> 9-3: Minimize Construction Noise <br /> Construction activities and the use of construction equipment <br /> powered by internal combustion engines and other noise <br /> generating equipment that would disturb surrounding <br /> residential light uses, shall limited to the hours of 8:00 <br /> a.m. to 5:00 p.m. on weekdays. All equipment shall be <br /> adequately muffled and maintained, <br /> <br />10. All retaining walls on site shall be shown on the tentative <br /> map and shall be subject to the Planning Commission review and <br /> approval. The design of the walls shall be of crib-lock or <br /> keystone construction. <br /> <br /> Page 16 of 19 <br /> <br /> <br />