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of water at the inlet. Column 11 on Table 2 gives the calculated <br /> capacity for each of the existing culverts. As indicated in <br /> I Column 12 of Table 2, all of the culverts have capacities exceeding <br /> that required to handle the peak flow from.a 10-year/24-hour storm. <br /> In all but five cases, the actual culvert capacities are more than <br /> double the required design capacities. <br /> Erosion of soil into the drainage channels will be controlled where <br /> necessary by seeding of the cut slopes and roadway embankment <br /> slopes with native grasses, shrubs and/or trees. Road ditches and <br /> culvert entrances and outlet channels will be protected from <br /> I scouring by revegetation and/or rock riprap. <br /> r� <br /> The existing Road Systems Area drainage system will accommodate the <br /> runoff from specified storm events in accordance with current <br /> engineering practice and applicable government requirements. It is <br /> ' not a flood control program as such, although high peak flows will <br /> be alleviated to some extent by ponding and temporary detention at <br /> LA culverts. <br /> i <br /> 45 <br /> � . - 15 - <br />