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~ .~! <br />subsection 9A, be met, but also a mechanism will be provided to <br />safeguard the watershed against the spillage of toxic or dangerous <br />substances. <br />SGCtIOn 9 Stormwater Qutlet Protection <br />A. Control of Discharge in University Lake, Cane„Creek, and Uuper Eno <br />Protected Watershed Areas <br />Provisions shall be made for the control of stormwater discharges for the <br />types of development as specified below. After development of the site, <br />the peak discharge of stormwater runoff resulting from aten-year storm <br />shall be no greater than that which would result from aten-year storm on <br />the same site prior to development. <br />This requirement shall apply to: <br />1. Commercial, industrial, offce, and institutional developments <br />2. Multi-family residential developments of more than 10 units <br />3. Single-family detached residential developments where more than <br />three lots are to be created. <br />B. Control of Velocity <br />Persons shall plan and conduct land-disturbing activity so that the post- <br />construction velocity of the 10-year storm runoff in the receiving <br />watercourse to the discharge point does not exceed the greater of: <br />1. the velocity established by the table in paragraph 3 of the <br />subsection; or <br />2. the velocity of the 10-year storm runofF in the receiving watercourse <br />prior to development. <br />If conditions (1) or (2) of this paragraph cannot be met, then the receiving <br />watercourse to and including the discharge point shall be designed and <br />constructed to withstand the expected velocity anywhere the velocity <br />exceeds the "prior to development" velocity by 10%. <br />Standards <br />1. Acceptable Management Measures <br />Measures applied alone or in combination to satisfy the intent of this <br />subchapter are acceptable. if there are no objectionable secondary <br />consequences. Innovative techniques and ideas will be considered and <br />may be used when shown to have the potential to produce successful <br />results. Some alternatives are to: <br />G:\EROSION\Amendments\AMENDS2001:doc <br />