The development of land in any zoning district in the City shall
require stormwater management as provided in this chapter.
This chapter shall be known and may be cited as the "Stormwater
Management Ordinance."
Any person, firm, corporation or other entity proposing to construct
buildings or develop land within any zoning district of the City shall
prepare, for approval by the City Engineer, a stormwater management
plan that describes the manner in which erosion, sediment and runoff
resulting from the development will be controlled and managed. No
building or construction permits shall be issued by the City and no
final plat and no improvement plans for a real estate development
in the City shall be approved by the City until the stormwater management
plan has been approved by the City Engineer as meeting the requirements
of this chapter, or the requirement for such stormwater management
plan has been waived by the City Engineer. Downstream property owners,
watercourses, channels or conduits shall not receive stormwater runoff
from proposed upstream developments at a higher peak flow rate than
would have resulted from the same storm event occurring over the site
of the proposed development with the land in its natural, undeveloped
conditions, nor shall stormwater runoff exceed the capacity of the
natural drainage system.
Designs of detention facilities shall incorporate safety features,
particularly at outlets, on steep slopes, and at any attractive nuisances,
to include, as necessary, fencing, hand rails, lighting, steps, grills,
signs and other protective or warning devices so as to restrict access
during critical periods and to afford some measure of safety to both
authorized and unauthorized persons.
The provisions of this chapter shall be applicable in the following
areas:
A. Any development in a residential or agricultural zoning district
having a gross bulk aggregate area of five acres or more; and
B. Any development in a residential or agricultural zoning district
in the City of less than five acres with a 50% impervious surface,
including roads, buildings, utility rights-of-way and other improvements;
and
C. Any development in any other zoning district in the City (including
but not limited to commercial, commercial park, business park, industrial
and historical zoning districts) having a gross bulk aggregate area
of one acre or more.
The stormwater detention facilities shall be built in conjunction
with the storm sewer installation and be fully operational after the
clearing of vegetation.
A. Silt and debris connected with early construction shall be removed
periodically from the detention area to maintain full storage capacity.
B. The maintenance responsibility of the detention area shall remain
with the developer and/or contractor until final inspection and applicable
construction performance guarantees are released.
C. Before final plat approval and before approval of subdivision improvement
plans by the City, the developer shall submit his commitment for future
maintenance responsibility of the detention area. The City may withhold
final plat approval and approval of improvement plans unless adequate
arrangements are made to provide for the future maintenance of the
detention area by the developer or the property owners in the subdivision
benefitted thereby.
When applicable, the provisions of this chapter shall be reviewed
by the City Engineer to assure compliance.