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Pete Hoffmann, Chair and <br /> Members of the Hawaii County Council <br /> October 29, 2007 <br /> Page 16 <br /> that all necessary permits have been received from <br /> those governmental agencies from which approval <br /> is required by Federal or State law, includin¢ <br /> section 404 of the Federal Water Pollution <br /> Control Act Amendments of 1972, 33 U.S.C. <br /> 1334 <br /> For all proposed developments and/or <br /> subdivisions greater than either fifty lots or five <br /> acres, the developer and/or subdivider shall <br /> include base flood elevation data within their <br /> proposal. <br /> Comply with the requirements of section 27-24. <br /> <br /> Page 22 27-20(e) (e) [i° cn : nn,l °1 °..nt° tl,° na° ,.F n«.. 1°a <br /> , <br /> of°. nt:..« ..F ~1,° nan « « F.11:«.. n«A ?l,n F.«nl <br /> °1,.. ,..ti,.« ,.F ?L.,...a° ..A°.. F. 11:«....1...11 1.,. ,.,.«a: A...1 1.., n <br /> All developments requiring a site drainage plan under <br /> section 25-2-72(3) [(n#ieiflated)] shall submit such a <br /> plan for review and approval by the director of public <br /> works. The site drainage plan shall comply with <br /> sections 27-20(a) and (b) and section 27-24, and shall <br /> include a storm water disposal system to contain run-off <br /> caused bYthe proposed development, within the site <br /> boundaries, up to the expected one-hour, ten year storm <br /> event, as shown in the Department of Public Works <br /> "Storm Drainage Standards," dated October 1970, or <br /> anv approved revision, unless those standards specify a <br /> greater recurrence interval. The amount of expected <br /> runoff shall be calculated according to the Department <br /> of Public Works "Storm Drainage Standards;' dated <br /> October 1970, or anv approved revision, or by anv <br /> nationally-recognized method meeting with the <br /> approval of the director of public works. Runoff <br /> calculations shall include the effects of all <br /> improvements. <br /> <br /> Page 23 27-22 The floodway identified on the Flood [Ittate] Insurance <br /> Rate Maps and located within areas of special flood hazard <br /> is the watercourse reserved to discharge the base flood. <br /> Since the floodway is an extremely hazardous area due to <br /> the velocity of [€leed-waters] floodwaters which carry <br /> debris, potential projectiles, and erosion potential, the <br /> <br />