(a) All new and existing residential buildings whose additions increase the amount of property covered by buildings or modify downspouts and sump discharges must connect all downspouts and sump discharges to the available storm sewer system, unless the village engineer determines that downstream sewer capacity is insufficient, or that a direct connection of downspouts and sump discharges to the available storm sewer system is not necessary to prevent an increased burden upon adjoining property by reason of stormwater runoff in accordance with applicable laws and best engineering practices.
(b) Prepare downstream sewer capacity analysis for existing and proposed conditions prior to connecting to the public storm sewer.
(c) Demonstrate and quantify the existing and proposed runoff volume, rate and direction. Any increase must be diverted or detained.
(d) Direct connection of downspouts to the storm sewer system is not required if the public storm sewer system is more than two hundred feet (200') from the site, is not within easements or street right of way, or if applicable laws prohibit the direct inflow of stormwater.
(e) Discharges shall be directed away from adjacent properties and at a minimum setback from the property line (not less than 1/2 the building setback lines).
(f) Runoff volumes and rates may not increase or change direction except as approved by the village engineer.
(g) Direct downspout and sump discharges shall be released onto the site in a manner that provides positive drainage without adversely affecting adjacent property. (Ord. 0-09-09, 4-20-2009)