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equipment would be required to meet DMV noise standards and be equipped with muffling devices. Vibration As required by the General Plan, the noise study includes an analysis of railroad-induced ground vibration. The General Plan requires that the project demonstrate that it would be compatible with the vibration impact criteria established by the Federal Transit Administration (FTA). This vibration study indicates that the homes closest to the railroad (Lots 6, 7, and 8) would exceed the FTA's criteria and mitigation will be required for these lots. The study indicates that the homes on these lots will need to have spread footing or post/beam foundations rather than slab on-grade foundations. Staff notes that the study also identifies an alternative mitigation of slowing passing trains to no more than 15 mph within 100 ft. of the site to reduce vibration to acceptable levels. However, since the City and the applicant/future homeowners cannot control train speed, this alternative mitigation is not feasible. Grading Plan The subject property generally has flat terrain. Site grades generally range from an elevation of approximately 348 feet at the northwest corner of the site to an elevation of approximately 350 feet at the southern border. Grading for the proposed project would be limited to that required for preparation of the building pads and foundations, streets, and utilities. Retaining walls from 6 inches to 1.6 feet in height would be installed adjacent to the rear property lines of Lots 4-7 to provide proper slope for drainage. Staff finds the proposed grading to be minor and acceptable. Drainage Plan In order to reduce stormwater runoff and pollutants from the site, drainage from the roofs and lot surface drainage would be conveyed to and treated by vegetated swales between the homes and the private street. A landscape-treatment area would also be located adjacent to the guest parking spaces. These are types of stormwater runoff measures that are supported by the Regional Water Quality Control Board and local agencies like Pleasanton implementing the urban clean water runoff program. Utilities Water, storm drain, and sanitary sewer lines would be extended from existing City mains in Stanley Boulevard up the private street to serve the new homes. All new on-site utilities to serve the proposed development (i.e., power, phone, cable TV, etc.) will be installed underground in joint utility trenches. Staff finds the preliminary utility plan to be acceptable. The City Council will determine in Spring 2011 whether it wants to underground the existing utility lines along Stanley Boulevard in conjunction with the Stanley Boulevard reconstruction PUD-82 Page - 16- September 15, 2010