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<br />e <br /> <br />F. Critical erosion areas exposed during construction shall <br />be protected with temporary vegetation, mulching or other <br />acceptable means. <br /> <br />G. Sediment basins (debris basins, desilting basins, or <br />silt traps) shall be installed and maintained to remove <br />sediment from runoff waters from land subject to earth <br />disturbance activities. <br /> <br />H. Diversions shall be installed to divert surface water <br />runoff from slopes of ten percent (10%) or steeper. <br /> <br />I. Provisions shall be made to effectively accommodate <br />increased runoff from slopes of ten percent (10%) or steeper. <br /> <br />J. <br />feet <br />by a <br /> <br />Cut and fill slopes shall not be steeper than three <br />horizontal to one foot vertical (3:1) unless stabilized <br />retaining wall, rip-rap, or other acceptable means. <br /> <br />K. During grading operations, necessary measures for dust <br />control, as required by the City, shall be implemented. <br /> <br />e <br /> <br />9. Drainaqe. The natural drainage system shall be used to the <br />maximum extent feasible for the storage and flow of runoff. The <br />design of the drainage system shall conform to the City's overall <br />storm water management plan. The following requirements shall <br />also apply: <br /> <br />A. Proposed drainage facilities shall have adequate <br />capacity to accommodate potential runoff from their entire <br />upstream drainage area, whether within or without the <br />subdivision. The effect of the subdivision on existing <br />downstream drainage areas outside the subdivision shall be <br />considered in evaluating the adequacy of the storm water <br />management plan. <br /> <br />B. Storm water runoff shall be discharged to marsh lands, <br />swamps, retention basins or other treatment facilities. <br />Marsh lands and swamps used for storm water shall provide for <br />natural or artificial water level control. <br /> <br />C. No existing ditch, stream, drain or drainage canal shall <br />be deepened, widened, rerouted or filled without review and <br />approval by the City. <br /> <br />e <br /> <br />D. Where artificial channels must be constructed to augment <br />the natural drainage system, such channels as well as the <br />natural drainage ways may be planned as part of a <br /> <br />10.40 <br />