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Bridle Creek residential projects. The Preserve tank will also serve several other smaller residential projects in the Dublin Canyon Road area and eliminate the need for a pump-only (hydro pneumatic) water system to the Canyon Meadows development. These facilities greatly improve the safety and reliability of this system and bring this area into compliance with the City's Water Master Plan standards. The new "Lund and Golf Course Tanks" constructed as part of the Bridle Creek and CalIippe Preserve Golf Course development in the southeast portion of the City will aid in overall City storage. With further build-out of the Lower Zone, the existing excess storage will gradually diminish, until approximately the year 2010 when the Lower Zone will require additional storage. Current projections indicate that General Plan build out will require an additional 2-3 million gallons of storage. The City will provide additional storage in an expanded Tassajara Reservoir or in a separate storage reservoir at another location. During normal year peak periods, Pleasanton can currently rely, in total, on a delivery or supply capacity of approximately 34.4 mgd through the current infrastructure system (25.4-mgd from Zone 7 and 9.0 mgd from the City's wells). Under normal water supply conditions, the City has sufficient water supply to deliver to its users. Recent planned improvements to the City and Zone 7's delivery system will ensure that ample water supplies meet maximum-day demands. Thus through 2010, the City can meet water demands in accordance with its Water System Master Plan standards. STORMW ATER FACILITIES Stormwater Drainage The local storm drainage system consists of mostly underground pipes, local channels, and natural swales in hillside areas. These facilities carry water runoff within the drainage basin to the flood- control channels (known locally as arroyos). Developers of new projects must install adequately- sized storm drains to connect to the City's existing underground storm-drain network. The City requires that hillside projects protect natural drainage courses and install silt basins / retention ponds for controlling pollutants and the runoff-flow rate. The City has required new developments to size their storm drains to accommodate major rainfalls. To accommodate future buiIdout of the Planning Area, the City will continue to require that new developments install appropriately-sized storm drains. As identified and budgeted in the City's Capital hnprovement Program, the City has scheduled improvements in periodic increments to older portions of the storm-drain network. Flood Control Responsibility for flood control within the Planning area lies with Zone 7 of the Alameda County Flood Control and Water Conservation District. Zone 7 maintains improved flood-control channels and installs new drainage channels. Under Zone 7 permits, development projects have improved most of these channels, the arroyos, over the last 20 years. The unchannelized Arroyo de la Laguna, south of Bernal Avenue, remains a distinct riparian corridor. hnprovements to this VI-14