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Mountain House Specffic Plan III — ........................................................................................................................................................................... b. All implementing projects shall comply with the applicable provisions of the MHCSD Storm Water — Master Plan Update and addenda and Manual for Best Management Practices. c. A material management plan for each business with potential pollutants shall be approved by the MHCSD prior to the issuance of building permits for commercial or industrial uses to control the use, storage and disposal of chemicals that could pollute runoff. _ d. An illicit connection regulation shall be enforced by the MHCSD to prevent connections to the storm drainage system that discharges material except rainfall runoff into the drainage system. All connections to the storm drainage system shall be approved by MHCSD. 15.7 Flood Protection — 15.7.1 Master Plan Summary The Master Plan requires that the entire Mountain House community be protected from a 100-year flood. _ On-site dams, levees and berms protecting the County and the Mountain House community from flooding shall be monitored by the MHCSD to identify potential problems. — The Master Plan also provided a design for a levee system to be constructed immediately adjacent to but _ structurally separate from any existing substandard levees. Both the existing substandard levees and the proposed levee would be developed as regional public recreational parks and/or wildlife habitat areas subject to levee encroachment standards established by the agency responsible for the operation and maintenance of the new levee system. 15.7.2 Specific Plan III Description All work associated with the levees is considered to be a part of the scope of work for Specific Plan II. In the event that Specific Plan I1 does not move forward,Specific Plan III must then be amended to cover the scope of work related to levee improvements. 15.8 Siting Criteria _ 15.8.1 Master Plan Summary The Master Plan requires that drainage facilities be sited to perform efficiently while minimizing visual, — safety,or other impacts. 15.8.2 Specific Plan III Description A water quality pond is proposed for the western portion of the Specific Plan 3 area. The basin is to be — located at the southwest comer of the intersection of Central Parkway and Grant Line Road. The basin will be designed to have a perimeter berm to obscure views into the basin. For safety concerns,the basin — 15-8 Draft 03114/05 ...........................................................................................................................................................................