12.30.080 – Storm drainage system

Storm drainage systems shall be installed including appropriate stormwater retention and detention facilities in accordance with Titles 16 and 18 of the St. Charles Municipal Code.  The proposed storm drainage system shall discharge into an existing storm sewer or drainage way such that the existing system has adequate capacity for the additional flow and adequate provisions shall be made for surface overflow when the capacity for the additional flow and adequate provisions shall be made for surface overflow when the capacity of the storm drainage system is exceeded to ensure that buildings are not flooded or threatened by flooding.