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PUD-93-02-09M 2001 Ruby Hill Boulevard flooding as a result of the failure of a levee or dam? j) Inundation by seiche, tsunami, or mudflow? Discussion a,e,f) The proposed project will be required through the building permit and construction process to incorporate best management practices for discharges resulting from this development. The City has adopted the most recent Regional Water Quality Control Board stormwater discharge requirements related to design, construction and implementation of the subject site. A design feature incorporating the BMP's is the provision of bio-swales used as on-site treatment prior to discharge into the storm water system. The applicant will be required to obtain the required permits and approvals from SF Regional Water Quality Board. Therefore, this would be a less- than-significant-impact. b) The proposed project will not use ground water for this project. Any existing wells will be required to be abandoned pursuant to the Alameda County Department of Environmental Health. The development of this project does not anticipate a loss of groundwater recharge potential. Therefore, this would be aless-than-significant-impact c-d) Site development will not alter the existing drainage pattern from its existing condition. The channel will not be subject to substantial erosion or siltation. Therefore, this would be a less- than-signiflicant-impact g-i) Structures will not be placed within a 100-year flood hazard. The proposed development will not expose people or structures to a significant risk of loss, injury or death involving flooding. Therefore, this would be categorized as no-impact. j) The City of Pleasanton is not at risk from seiche, tsunami, or mudflow. Therefore, this would be categorized as no-impact. 9. LAND USE PLANNING Environmental Setting The project area contains an existing two-story building once used as a real estate sales office and vineyards. The proposed project is to relocate the existing building closer to Vineyard Avenue and use it as a restaurant, and to construct a residence at the existing sales office is located, and to preserve the existing vineyards. Standards of Significance For purposes of this environmental document, an impact is considered significant if the proposed project would: • Substantially alter an approved land use plan that would result in physical change to the environment. 19