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4. The drainage Swale in the proposed landscape buffer along the northern property boundary shall be designed to the satisfaction of the City Engineer, such that no ponding or backup of runoff occurs in the upslope properties draining to this swale. 5. All storm drains that are to be maintained by the City shall be located within easements on private streets. The easements shall extend along the entire length of the public storm drain system and shall be a minimum of twenty feet (20') centered along the pipe. 6. The proposed storm drain system. from Peralta Avenue to the existing 36" public storm drain, shall be owned and maintained by the Subdivider and/or the project Homeowners' Association. 7. The subdivision shall be graded to allow for the overland release of runoff into San Leandro Creek during a higher than design storm event and/or in the event of total failure of the on- site storm drainage system. D. GRADING AND EROSION CONTROL 1. Prior to the approval of the first Final Map, the Subdivider shall submit all information including a Grading Plan accompanied by Soils Engineering and Engineering Geology Reports, in the accordance with requirements of the City of San Leandro Municipal Code Title VII, Chapter 12 and obtain a grading permit. 2. To control both during and post construction storm water pollution, the Subdivider shall comply with the regulations and provisions contained in the City's Grading Ordinance, the City's Storm Water Pollution Prevention Permit, and the National Pollutant Discharge Elimination System (NPDES), to the satisfaction of the City Engineer and the Regional Water Quality Control Board. 3. Until such time as all construction for the development has been completed to the satisfaction of the City Engineer. the Subdivider shall provide current Erosion & Sediment Control Plans, and amended Storm Water Pollution Prevention Plans (SWPPPs) for all portions of the site where construction is ongoing. Said Plans shall be , submitted to the City Engineer for review and approval on or before September 1 of each calendar year. and shall be fully implemented on or before October 15 of each calendar year. 4. The Urban Runoff Clean Water Program requires that all runoff be treated to remove sediment and water borne pollutants prior to discharge into a public facility. If filtration type catch basins are used. the CC &R's shall specify the responsibility of the Homeowners' Association to regularly inspect and maintain the filtration systems. Such inspection and maintenance shall include replacing the inlet filters a minimum of two times each calendar year. Cherry City Vesting TM 7078 2/9/99 Page 6 of 9 1 341