City of Harrisonville, MO
Cass County
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Table of Contents
Table of Contents
[Ord. No. 2772 §1, 5-20-2002]
The provisions of this Chapter shall constitute and be known as the "Storm Water Management Ordinance for the City of Harrisonville, Missouri".
[Ord. No. 2772 §1, 5-20-2002]
The purpose and intent of this Chapter is to protect, maintain and enhance the public health, safety and general welfare of the citizens of the City of Harrisonville by establishing minimum requirements and procedures to control the adverse effects of increased storm water runoff associated with both future and existing developed land within the City. Proper management of storm water runoff will minimize damage to public and private property, ensure a functional drainage system, reduce the effects of development on land and stream channel erosion, assist in the attainment and maintenance of water quality standards, enhance the local environment associated with the drainage system, reduce local flooding, maintain as nearly as possible the pre-developed runoff characteristics of the site, and facilitate economic development while mitigating associated flooding and drainage impacts.
[Ord. No. 2772 §1, 5-20-2002]
The provisions and criteria of this Chapter shall extend and apply to all land within the corporate limits of the City and to appropriate unincorporated land in Cass County. Any person, firm, association, corporation or business proposing to construct buildings or develop land shall make application to the City Engineer for approval of a on-site storm water management plan and issuance of a drainage permit as specified herein. Provisions expressed herein shall be the minimum storm water management requirements and shall not be deemed a limitation or repeal of any other powers granted by State Statute. If site characteristics indicate that complying with these minimum requirements will not provide adequate designs or protection for local property or residents, it is the designer's responsibility to exceed the minimum requirements as necessary. The City Engineer or designee shall be responsible for the coordination and enforcement of the provisions of this Chapter.
[Ord. No. 2772 §1, 5-20-2002]
For the purpose of this Chapter, the following terms, phrases and words, and their derivatives, shall have the meaning given herein:
AS-BUILT PLAN
A set of engineering or site drawings that illustrate constructed features.
BEST MANAGEMENT PRACTICES
A wide range of management procedures, schedules of activities, prohibitions on practices and other management practices which have been demonstrated to effectively control the quality and/or quantity of storm water runoff and which are compatible with the planned land use.
CITY
The City of Harrisonville, an incorporated community in the State of Missouri.
CITY ENGINEER
The duly designated public works engineer for the City of Harrisonville, Missouri, or his/her duly authorized agent.
COE
Corps of Engineers.
CULVERT
A water conveyance located under a roadway or driveway.
DESIGN REPORT
The report that accompanies the storm water management plan and includes data used for engineering analysis, results of all analysis, design and analysis calculations (including results obtained from computer programs) and other engineering data that would assist the City Engineer in evaluating proposed storm water management facilities including those requirements of the Storm Water Management Design Manual.
DETENTION BASIN
A permanent storm water management structure whose primary purpose is to temporarily store storm water runoff and release the stored runoff at controlled rates.
DEVELOPMENT
Shall generally mean any of the following actions undertaken by a public or private individual or entity:
1. 
The division of a lot, tract or parcel of land into two (2) or more lots, plots, sites, tracts, parcels or other divisions by plat or deed, or
2. 
Any land change for development purposes including, without limitation, clearing, tree removal, grubbing, stripping, dredging, grading, excavating, transporting and filling of land.
3. 
To change the runoff characteristics of a parcel of land in conjunction with residential, commercial, industrial or institutional construction or alteration.
EASEMENT
A grant or reservation by the owner of land for the use of such land by others for a specific purpose or purposes, and which must be included in the conveyance of land affected by such easement.
ENCLOSED SYSTEM
Systems consisting of underground pipes, culverts and similar functional underground structures used to convey storm water.
EROSION
The wearing away of land surface by the action of wind, water, gravity, ice, or any combination of those forces.
EROSION AND SEDIMENT CONTROL
The control of solid material, both mineral and organic, during a land disturbing activity to prevent its transport out of the disturbed area by means of air, water, gravity or ice.
EXISTING LAND USE CONDITIONS
The land use conditions existing at the time of the most recent official aerial photography available from the City.
FEMA
The United States Federal Emergency Management Agency responsible for administering the National Flood Insurance Program.
FIRM
Flood Insurance Rate Maps which are prepared by FEMA and show areas that are predicted to flood after intense or major storms.
FLOODPLAIN
Any land adjoining a river, stream, watercourse or lake, which is likely to be flooded in a 100-year flood.
FLOODWAY
That portion of the flood hazard area identified by FEMA as the channel of a river or other watercourse and the adjacent land areas that must be reserved in order to discharge the regulatory flood without cumulatively increasing the water surface elevation more than one (1) foot.
GRADING
Excavating, filling (including hydraulic fill) or stockpiling of earth material, or any combination thereof, including the land in its excavated or filled condition.
IMPERVIOUS
The condition of being impenetrable by water.
INFILTRATION
The passage or movement of water through the soil profile.
LAND DISTURBING ACTIVITY
Any use of the land by any person that results in a change in the natural cover or topography that may cause erosion and contribute to sediment and alter the quality and/or quantity of storm water runoff.
MAINTENANCE
Any action necessary to preserve storm water management facilities in proper working condition in order to serve the intended purposes set forth in Article I of this Chapter and to prevent structural failure of such facilities. Maintenance shall not include actions taken solely for the purpose of enhancing the aesthetics aspects associated with storm water management facilities.
PUBLIC WORKS DEPARTMENT
The department responsible for all storm water management activities and implementation of the provisions of this Chapter.
MDNR
The Missouri Department of Natural Resources.
NPDES (NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM)
The program responsible for permitting point and non-point discharges to the waters of the United States.
NON-ERODIBLE
A material, e.g., natural rock, riprap, concrete, plastic, etc., that will not experience surface wear due to natural forces of wind, water, ice, gravity or a combination of those forces.
ONE HUNDRED-YEAR FREQUENCY STORM
A storm that is capable of producing rainfall expected to be equaled or exceeded on the average of once in one hundred (100) years. It also may be expressed as an exceedance probability with a one percent (1%) chance of being equaled or exceeded in any given year.
ON-SITE STORM WATER MANAGEMENT PLAN
The design and construction of a facility necessary to control storm water runoff within and for a single development.
PERSON RESPONSIBLE FOR THE LAND DISTURBING ACTIVITY
Shall mean:
1. 
The person who has or represents having financial or operational control over the land disturbing activity; and/or
2. 
The landowner or person in possession or control of the land who directly or indirectly allowed the land disturbing activity or has benefited from it or who has failed to comply with any provision of this Chapter.
POST-DEVELOPMENT CONDITIONS
The conditions which exist following the completion of the land disturbing activity in terms of topography, vegetation, land use and rate, volume or direction of storm water runoff.
PRE-DEVELOPED CONDITIONS
Those land use conditions that existed prior to the initiation of the land disturbing activity in terms of topography, vegetation, land use and rate, volume or direction of storm water runoff.
PRELIMINARY PLAT
The preliminary plat of a subdivision submitted pursuant to the City's subdivision regulations.
REGIONAL
A geographic area. Such area will generally encompass an entire drainage basin or watershed.
REGIONAL STORM WATER MANAGEMENT
The design and construction of a facility necessary to control storm water runoff within or outside a development and for one (1) or more developments.
REGISTERED LAND SURVEYOR
A land surveyor properly registered and licensed to conduct work within the City and the State of Missouri.
REGISTERED PROFESSIONAL ENGINEER
A civil engineer properly registered and licensed to conduct work within the City and duly licensed within the State of Missouri.
RESPONSIBLE PERSONNEL
Any foreman, superintendent or similar individual that is the on-site person in charge of land disturbing activities.
SEMA
Missouri State Emergency Management Agency.
SEDIMENT
Solid particulate matter, both mineral and organic, that has been or is being transported by water, air, ice or gravity from its site of origin.
STORM WATER MANAGEMENT
The collection, conveyance, storage, treatment and disposal of storm water runoff in a manner to minimize accelerated channel erosion, increased flood damage, and/or degradation of water quality and in a manner to enhance and ensure the public health, safety and general welfare, which shall include a system of vegetative or structural measures, or both, that control the increased volume and rate of storm water runoff caused by manmade changes to the land.
STORM WATER MANAGEMENT DESIGN MANUAL
The manual of design, performance and review criteria for storm water management practices; which is the APWA Section 5600, as amended.
STORM WATER MANAGEMENT FACILITIES
Structural or non-structural storm drainage conveyance elements such as, but not limited to: inlets, manholes/junctions, conduits, open channels, lakes, detention basins and erosion control devices.
STORM WATER MANAGEMENT PLAN
The set of drawings and other documents that comprise all of the information and specifications for the drainage systems, structures, concepts and techniques that will be used to control storm water as required by this Chapter and the Storm Water Management Design Manual. Also included are the supporting engineering calculations and results of any computer analysis.
STORM WATER MANAGEMENT QUALITATIVE CONTROL MEASURES
A system of vegetative, structural or other measures that reduce or eliminate pollutants that might otherwise be carried by storm water runoff.
STORM WATER RUNOFF
The direct response of a watershed to precipitation and includes the surface and subsurface runoff that enters a ditch, stream, storm drain or other concentrated flow during and following the precipitation.
SUBDIVISION
Shall mean:
1. 
The creation of one (1) or more new streets, alleys or other public ways; or the changing of any rights-of-way of any existing streets, alleys or other public ways.
2. 
Any division or redivision of a lot, tract or parcel of land regardless of its prospective use. Such subdivision may be accomplished by platting or by description of metes and bounds or otherwise into two (2) or more lots or other divisions for sale or improvement. The following are not defined as subdivisions:
a. 
The combination or recombination of portions of previously platted lots where the total number of lots is not increased and the resultant lots are in accordance with the rules and regulations contained in the City's subdivision regulations and with the City's zoning ordinance.
b. 
Division or sale of land by judicial decree which shall not be deemed a division for purposes of this Chapter.
c. 
The acquisition of land for the purpose of widening or opening of streets when the acquisition and work is done by the City, State or other governmental agency.
d. 
The division of land into parcels greater than five (5) acres where no street right-of-way dedication is involved.
SWALE
An open channel with a lining of grass, rock, riprap or other materials which can function to convey storm water runoff without causing erosion.
TEN-YEAR FREQUENCY STORM
A storm that is capable of producing rainfall expected to be equaled or exceeded on the average of once in ten (10) years. It may also be expressed as an exceedance probability with a ten percent (10%) chance of being equaled or exceeded in any given year.
WAIVER
The relinquishment from specific storm water management requirements by the City Engineer for a land disturbing activity on a case-by-case review basis.
WATER QUALITY
Those characteristics of storm water runoff from a land disturbing activity that relate to the physical, chemical, biological or radiological integrity of water.
WATERSHED
The drainage area contributing storm water runoff to a single point.
[Ord. No. 2772 §1, 5-20-2002]
A. 
The following development activities are exempt from the provisions of the Storm Water Management Ordinance.
1. 
Land disturbing activities on agricultural land for production of plants and animals including, but not limited to: forages and sod crops, grains and feed crops; timber and timber products; dairy animals and dairy products; poultry and poultry products; livestock, including beef cattle, sheep, swine, horses, ponies, mules or goats, including the breeding and grazing of these animals; bees; fur animals and aqua-culture. The construction of an agricultural structures such as broiler houses, machine sheds, repair shops, feed lots and/or animal holding facilities, and other major buildings which require the issuance of a building permit, shall require the submittal and approval of a storm water management plan prior to the start of the land disturbing activity.
2. 
Removing trees or clearing by an individual property owner.
[Ord. No. 2772 §1, 5-20-2002]
The Storm Water Management Design Manual shall be the APWA Section 5600 or as amended by the City Engineer. This manual shall provide guidance and design criteria for the evaluation of storm water management facilities. This Section shall supersede any conflicts with the Design Manual. Required guidelines, design procedures and criteria are presented, and although the intention of the manual is to establish uniform design practices, it neither replaces the need for engineering judgment nor precludes the use of information not presented. At the discretion of the City Engineer, other engineering procedures may be used to conduct hydrologic and hydraulic analysis.
[Ord. No. 2772 §1, 5-20-2002]
A. 
An occupancy permit shall not be issued without the following:
1. 
Recorded easements for storm water management facilities.
2. 
Receipt of an as-built plan which includes a certification of the storm drainage system.
B. 
A land disturbance permit shall not be issued, as required by Section 410.570 of the Subdivision Regulations, or modified without the following:
1. 
Right of entry for emergency maintenance if necessary.
2. 
Right of entry for inspections.
3. 
Any off-site easements needed.
4. 
An approved final storm water management plan.
C. 
Any and all land disturbance permits may be revoked at any time if the construction of storm water management facilities is not in strict accordance with approved plans.
D. 
In addition to the plans and permits required from the City, applicants shall obtain all State and Federal permits required for the proposed development.
[Ord. No. 2772 §1, 5-20-2002]
A list of fees for plan review and other fees associated with this Chapter can be obtained from the Public Works Department.
[Ord. No. 2772 §1, 5-20-2002]
A. 
A land disturbance permit may be suspended or revoked if one (1) or more of the following violations have been committed:
1. 
Violation(s) of the conditions of the storm water management plan;
2. 
Construction not in accordance with the intent of the approved plans;
3. 
Failure to obtain all relevant Federal, State and local permits;
4. 
Non-compliance with correction notice(s) or stop work orders(s); or
5. 
The existence of an immediate danger in a downstream area in the judgment of the City Engineer.
B. 
If one (1) or more of these conditions is found, a written notice of violations shall be served upon the owner or authorized representative and an immediate stop work order may be issued. The notice shall set forth the measures necessary to achieve compliance with the plan. Correction of these violations must be started immediately or the owner shall be deemed in violation of this Chapter.