§ 12. Storm water control.

1.

Runoff. All parcels of land developed pursuant to this article shall include plans for the collection and distribution of storm water runoff. Under no circumstances shall the rate of storm water discharge and/or runoff from any portion of a site after development or during the period of development and construction exceed the undeveloped (vegetation only) discharge rate. This provision shall apply on a spot measurement basis at all points around the perimeter of the site and within existing storm water systems as well as on a total site discharge basis.

2.

Detention. Detention shall be provided for all differential runoff, regardless of the amount or size of the parcel. Such detention shall be provided on-site, in above ground or buried facilities, in accordance with accepted practices and in compliance with the more restrictive of the regulations of the metropolitan sanitary sewer district or the city as stipulated by board of aldermen policy and chapter 25 of this Code of Ordinances.

3.

[Discharge.] All detention facility discharge shall be made into existing piped storm water systems. Surface discharge shall only be allowed where no piped system can be utilized within 300 feet of the site or where significant surface flow-ways such as Fishpot or Grand Glaize Creeks are available.

(Ord. No. 2704, § 1, 10-26-98)