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53. Sound walls, meeting the design requirements contained in the MHCSD Design Guidelines, shall be installed on arterial streets (except for Central Parkway) and collector streets when the adjacent development (or phased development) has lots backing onto the street. The length of the sound wall shall match the total length of the lots backing onto the street plus an additional length that will close a gap to a previously constructed wall not more than 200 feet away or to the end of the first block. 54. The sound walls shall be constructed consistent with the MHCSD Design Manual,the Master Plan and as shown on the preliminary sound wall plans. The noise barrier may consist of a wall, berm, or combination thereof,the exact location, height and character of the sound barrier shall be determined by a noise consultant approved by the County and the MHCSD. The sound study shall comply with the Neighborhood K & L Initial Study Sound Study. 55. Except when the MHCSD General Manager specifies otherwise, when a sound wall is installed on an arterial street, the adjacent street edge landscaping, sidewalk, and street curb & gutter shall also be installed. 56. Construction Traffic shall comply with the Construction Truck Management Plan administered by the MHCSD. Project construction plans shall include specifications to the contractor outlining compliance requirements. 57. To control erosion and sedimentation during project construction and operation, the developer shall comply with MHSWMP policies, MHSWMP mitigation measures, and Phase I and II NPDES permit requirements, including the preparation and implementation of a SWPPP that outlines BMPs to be followed to minimize erosion and sedimentation during project construction and operation. The Developer shall have qualified NPDES personnel on site.The developer shall pay all cost associated with the implementation and inspection of these requirements. 58. The developer shall build the required drainage system and water quality basins as required by MHCSD to accommodate runoff from the project. 59. Water Quality Basins Mosquito Abatement: Plans for the implementation and maintenance of the water quality basins and any other storm drainage facilities involving open bodiesof water shall be reviewed and approved by the MHCSD and if required by the Mosquito Abatement District. 60. All non-residential (Le. Office, Industrial, Commercial, etc), uses must enter into an NPDES storm water agreement with MHCSD. 61. UTILITIES A. The Developers and contractors shall comply with Ordinance No. 4162"Street Opening and Pavement Restoration Regulations". B. When any portion of an arterial street is to be included in a development's construction plans, then all of the buried utilities that are ultimately planned to be within the improvement area shall be installed as part of the street improvement project, regardless of any of the utilities needed for any phase of the development associated with the street construction. Conduits or sleeves may be installed in lieu of the buried utility, if approved by the MHCSD Public Works Director. C. 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 over sizing costs, the developer may request the MHCSD to process a reimbursement agreement PA-1000267—Conditions of Approval 14