Ordinance 3528-16 - Laserfiche WebLink

D. Minimum Requirement #4: Preservation of Natural Drainage Systems and Outfalls Natural drainage patterns shall be maintained, and discharges from the project site shall occur at the natural location, to the maximum extent practicable. The manner by which runoff is discharged from the project site must not cause a significant adverse impact to downstream receiving waters and/or down- gradient properties. All outfalls require energy dissipation in accordance with the City's Stormwater Management Manual. E. Minimum Requirement#5: On-Site Stormwater Management On-site stormwater management BMPs shall be provided to infiltrate, retain, and disperse stormwater runoff on site to the extent feasible without causing flooding or erosion impacts. On-site stormwater management shall be selected, designed, constructed, and maintained in accordance with the City's Stormwater Management Manual. F. Minimum Requirement#6: Runoff Treatment The following projects require BMP selection, design, construction, and maintenance of stormwater treatment facilities in accordance with the City's Stormwater Management Manual: (a) Projects in which the total of pollution-generating hard surface (PGHS) is 5,000 square feet or more in a threshold discharge area of the project, or (b) Projects in which the total of pollution-generating pervious surfaces (PGPS) - not including permeable pavement - is three- fourths (3/4) of an acre or more in a threshold discharge area, and from which there will be a surface discharge in a natural or man-made conveyance system from the site. G. Minimum Requirement#7: Flow Control The following projects that discharge stormwater directly or indirectly through a conveyance system into a fresh water body require selection, design, construction, and maintenance of flow control BMPs in accordance with the City's Stormwater Management Manual. 26