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69. It is the policy of the CSD that any buried utilities installed in Lne future on arterial streets shall not require trenching through portions of existing street paving. To meet this requirement, those portions of the future utility within the initial street construction shall be installed and properly plugged so that they can be incorporated into future utility system improvements. Buried utilities shall include storm drains, sewer pipes, water pipes,joint trench utilities, irrigation pipes, traffic signal conduits, and street light conduits. If the size of any one of these facilities is not available at the time of design, then"sleeves" of sufficient size and length shall be installed for future use when the utility system is installed. 70. Any phased development shall install all "in-tract" utilities needed to serve its development. In addition, if any future adjacent or nearby phases of the development, or adjacent neighborhoods, will depend on obtaining service from such utilities, then the utility lines shall be sized to serve these future developments. Any utility lines that are intended to be used by an adjacent development or neighborhood shall be installed up to the phase or Tentative Map boundary line to make it available for future extension. To recoup all or a portion of any oversizing costs, the developer may request the CSD to form an area-of-benefit or other reimbursement mechanism agreement for this purpose provided the CSD has established a reimbursement policy. 71. When public utilities are to be located outside public rights-of-way but within the Tentative Map boundary, the developer shall provide public utility easements for these utilities. The easements shall be shown on all Final Maps and parcel maps. 72. Prior to the submittal of improvement plans for the development, the developer shall submit to the CSD master plans for intract storm drains, sanitary sewers, and water distribution facilities. Such plans shall comply with the design requirements of the Development Standards and adopted master plans. Capacity and pipe size calculations shall be provided along with the plan submittal. The plans shall show pipe sizes, pipe slopes, grades at junction points, and the locations of fire hydrants, blow off valves and sampling stations. 73. The approved Mountain House Storm Water Master Plan requires that a portion of north- south flood flows through the community be carried on the surface in major arterials such as Central Parkway and De Anza Boulevard. Prior to the preparation of any improvement plans for any portion of these thoroughfares, the developer's design engineer shall prepare, and the CSD shall approve, master plans for each of these arterials that sets the vertical and horizontal control for the street that will guarantee that it will function as a open channel for carrying the design flood flow. 74. An on-site network of utilities shall be required to adequately serve Parcels 984 through 1006. Prior to the development of any one parcel within a block,the developer shall prepare and have the CSD approve a master on-site utility system layout that clearly indicates that each parcel's utility service needs are being adequately addressed. Utilities shall be defined for this condition as sanitary sewer, domestic water, fire service, and storm drainage. 10/05/00 15