The City of Henderson regulations are compliant with the Kentucky Pollutant Discharge Elimination System (KPDES) through municipal regulation Henderson Code of Ordinances Chapter 23 Article II. The city’s Municipal Separate Storm Sewer System (MS4) requires Henderson to administer and enforce compliance with stormwater discharge permits in an effort to decrease stormwater pollutants and increase overall water quality.
(a) Best management practices required. The Henderson Water Utility will adopt requirements identifying best management practices for any activity, operation, or facility which may cause or contribute to pollution or contamination of stormwater, the storm drain system, or waters of the state, including requirements during construction of new or redevelopment projects.
(b) Stormwater management measures post-construction. Owners or operators of any new development or redevelopment project shall design, construct and perpetually maintain stormwater management facilities or measures that will treat, filter, infiltrate, screen, harvest or reuse stormwater runoff from all impervious areas to manage stormwater quality. Facilities constructed or measures used to meet this requirement shall capture or treat all such runoff up to and including that from an eightieth percentile storm event. HWU will publish the eightieth percentile storm intensity and technical details of treatment requirements in the HWU Technical Stormwater Manual.
(c) Accidental discharges. The owner or operator of any development or redevelopment project, or any commercial or industrial establishment shall provide, at their own expense, reasonable protection from accidental discharge of prohibited materials or other wastes into the MS4 or watercourses through the use of structural and non-structural BMPs. Further, any person responsible for any property or premises, which is, or may be, the source of an illicit discharge, may be required to implement, at said person's expense, additional structural and non-structural BMPs to prevent the further discharge of pollutants to the municipal separate storm sewer system.
(d) Other permits. Compliance with all terms and conditions of a valid NPDES permit authorizing the discharge of stormwater associated with industrial activity, to the extent practicable, shall be deemed compliance with the provisions of this section. These BMPs shall be part of a stormwater pollution prevention plan (SWPPP) as necessary for compliance with requirements of the NPDES permit.
(a) Depositing of material in streets, rights-of-way, or drainage systems. It shall be a violation of this chapter for any person to do, or permit, authorize or direct another person to do, any of the following:
(1) Erect, construct, deposit, or plant, any building, outbuilding, shed, fence, playground equipment, concrete, landscape berm, trees, bushes, shrubs, flowers, rocks, dirt, or any other substance or structure that covers, alters, obstructs, impairs or encroaches on the MS4 or any private stormwater system, unless such activity is authorized by the general manager.
(2) Deposit any concrete, pollutants, building materials, or yard waste on the surface of any street or alley located within public right-of-way that drains into the combined sewer system, the MS4, or any private stormwater system.
(3) Cover, alter, excavate, fill, divert, obstruct, impair, or encroach on any portion of the MS4 or any private stormwater system.
(4) Deposit or place any solid waste, debris, yard waste, pollutants, wastewater, concrete, building materials, tires, appliances, animal waste or carcasses, or any other substance, material or obstruction of any kind in an open ditch, sewer, stormwater inlet or catch basin, manhole, curb and gutter, or over, under, or across any portion of the MS4 or any private stormwater system.
(b) Construction of private stormwater drainage systems. All private stormwater drainage and treatment systems shall be in place, functioning, and certified by a Kentucky licensed professional engineer prior to the occupation of any property improvements by the owner. It shall be unlawful for any person to refuse to construct any part of a private stormwater drainage or treatment system or component that has been required by the City of Henderson or the Henderson City-County Planning Commission on any development plan or site plan.
(c) Maintenance of private stormwater drainage systems. The owner of the property on which the private stormwater drainage system is located, which includes but is not limited to the conveyance system, treatment system or detention/retention basin, shall, at the written request of HWU, employ a Kentucky licensed professional engineer to certify that the private storm sewer system is being maintained at the level of service for which it was originally designed. If a determination is made by HWU that the property owner is not maintaining the private system at or above the level of service indicated in the original design, a notice of deficiency shall be issued and enforcement initiated. It shall be unlawful for any person to refuse to maintain any part of a private storm sewer system that has been approved by the City of Henderson or the Henderson City-County Planning Commission as part of any development or site plan. The system shall be maintained at all times to the level of service for which it was designed.
(a) Where a public drainage easement for a public stormwater drainage system exists, the private property owner is responsible for non-structural maintenance of any ditch, channel, detention/retention basin, or any other stormwater conveyance, treatment or control device located on the owner's property, including but not limited to mowing the area (including any embankment or slope), removing small debris that accumulates in the system including litter and yard waste, sodding or seeding bare areas, (including any embankment or slope), and maintenance of landscape items, such as trees and shrubs.
(i) Maintenance and repair of detention/retention basins and other stormwater conveyance, treatment or control devices located on private property is the responsibility of the property owner who shall ensure the facilities are operating as intended. Property owners shall address requirements for continuing maintenance and repair of stormwater treatment or control devices through a note or clause on the face of a final recorded plat, or the execution of a stormwater management system maintenance agreement, recorded in the office of the county court clerk at the expense of the property owner.
(j) The owner of any property may be notified in writing by the city of any problems or maintenance or repairs that must be addressed or corrected in stormwater conveyance, treatment or control devices, or in stormwater basins, such as removing debris from a basin, repairing eroded areas on the embankment, replacing a crushed pipe, repairing or replacing a stormwater BMP, or improving embankment stability. Such notification shall include a time limit for correction of deficiencies, after which time enforcement shall be initiated. The scale of enforcement actions will be as detailed in the appropriate HWU enforcement response plan.
(a) Written notice.
(1) Any user found to be violating any provision of this division or a permit or order issued hereunder, shall be served by the general manager or his/her designee with written notice stating the nature of the violation. The user shall permanently remedy all violations upon receipt of this notice.
(2) As contained in Section 23-34, the notice may be of several forms. Also as contained in Section 23-34, penalties of various forms may be levied against users for violations of this division. The penalties, if levied, shall range from publication of violators in the local newspaper to administrative fines of up to ten thousand dollars ($10,000.00) per day per violation.
(b) Revocation of permit.
(1) Any user violating any of the provisions of this division or a permit or order issued hereunder, may be subject to termination of its authority to discharge sewage into the municipal sewer system. Such termination may be immediate if necessary for the protection of the POTW. Said user may also have water service terminated.
(2) Any user who violates the following conditions of this division, or applicable state and federal regulations, is subject to having his permit revoked in accordance with the procedures of this chapter:
a. Failure of a user to factually report the wastewater constituents and characteristics of his discharge;
b. Failure of the user to report significant changes in operations, or wastewater constituents and characteristics;
c. Refusal of reasonable access to the user's premises for the purpose of inspection or monitoring; and/or
d. Violation(s) of conditions of the industrial user permit.
Stormwater Requirements for New Development and Redevelopment
Division of Water General Permits
Kentucky Stormwater Pollution Prevention and Best Management Practices Plan