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Pleasanton Catewcry Environmental Checklist lated to design, construction and implementation of the subject site. Therefore, this would be a less-than-significant-impact. b) The 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 devel- opment of this project does not anticipate a loss of groundwater recharge potential. Therefore, this would be categorized as no-impact. c) The overall site development constitutes 591,317 square feet of building/hardscape areas, which will alter the existing drainage pattern from its existing condition. Therefore, this would be a I ess-than-sign ifican t-impact. d) The existing site drainage patterns will be modified by engineering the site to accommodate posi- tive site drainage. This drainage is pretreated by bio-retention facilities before it is discharged into the Arroyo Del Valle and then ultimately to San Francisco Bay. The overall development is situated approximately 200 feet from the closest top-of--bank of the Arroyo Del Valle and is separated from the Arroyo by Nevada Court and the Temple Beth Emek Synagogue property. The proposed site improvements will not alter the alignment or stability of any Arroyo within Pleasanton's jurisdiction. Therefore, this would be categorized as ales-than-significant- impact. g-i) The proposed development is a commercial development, which does not include a housing ele- ment. Housing will not be placed within a 100-year flood hazard. The development will not ex- pose people or structures to a significant risk of loss, injury or death involving flooding. There- fore, this would be categorized as no-impact. j) "fhe 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 "I~he project site is vacant property located within the Stanley Business Park. The project proposes to develop the site with a commercial development in conformance to the site's Retail/Highway/Service Commercial, Business and Professional Offices land use designation. 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 envi- ronment. Pleasanton Gateway Initial Study Page 26 of 37 November 8, 2006