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ii. The boundary of the floodway when applicable; and, <br /> iii. A signed statement by an Illinois Licensed Professional Engineer that the <br /> proposed plat and development plan accounts for changes in the drainage of <br /> surface waters in accordance with the Plat Act (765 ILCS 205/2). <br /> B. Streets,blocks lots,parks and other public grounds shall be located and laid out in such <br /> a manner as to preserve and utilize natural streams and channels. Floodplains within <br /> the proposed developments shall be reserved for activities such as parks,public grounds <br /> and other open space whenever possible, and shall et ine'�repesed lois <br /> 8. PUBLIC HEALTH AND OTHER STANDARDS. <br /> A. Public health standards must be met for all floodplain development. In addition to the <br /> other requirements in this Ordinance the following standards apply: <br /> i. No development in the floodplain shall include locating or storing chemicals, <br /> explosives, buoyant materials, flammable liquids, pollutants, tanks or any <br /> hazardous or toxic materials below the flood protection elevation unless such <br /> materials are stored in a floodproofed and anchored storage tank and certified <br /> by a professional engineer or floodproofed building constructed according to <br /> the requirements of Section 6 of this Ordinance <br /> ii. Public utilities and facilities such as sewer, gas and electric shall be located and <br /> constructed to minimize or eliminate flood damage; <br /> iii. Public sanitary sewer systems and water supply systems shall be located and <br /> constructed to minimize or eliminate infiltration of flood waters into the <br /> systems and discharges from the systems into flood waters; <br /> iv. New and replacement on-site sanitary sewer lines or waste disposal systems <br /> shall be located and constructed to avoid impairment to them or contamination <br />