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Charter Township of Oakland, MI
Oakland County
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The purposes of this chapter shall be:
A. 
To protect public health, safety and welfare by requiring stormwater management whenever new, expanded or modified developments are proposed.
B. 
To promote for the most efficient and beneficial uses of land and water resources.
C. 
To ensure that stormwater runoff from development is controlled so that lake and stream water quality is protected, siltation minimized, and flooding problems avoided.
D. 
To provide for cost-effective and functionally effective stormwater management, and to reduce the need for future remedial projects.
E. 
To prevent soil erosion and sedimentation by requiring temporary and permanent erosion control measures.
F. 
To use the natural drainage system for conveying and receiving stormwater runoff, and to minimize the need to construct storm drain pipes.
G. 
To encourage multiple-purpose stormwater management which enhances the environmental character of the Township.
H. 
To allow wetlands to be used for stormwater detention in selected locations, while ensuring that the natural functions and quality of wetlands throughout the Township are protected to the maximum feasible extent.
I. 
To recognize private responsibility to incorporate stormwater management systems into the early stages of site planning and design.
J. 
To allow for off-site stormwater management under specified conditions.
K. 
To ensure that all stormwater conveyance and detention facilities will be properly maintained.
L. 
To provide penalties for violation of the provisions of this chapter.
The following rules of construction apply to the text of this chapter:
A. 
Particulars provided by way of illustration or enumeration shall not control general language.
B. 
Ambiguities, if any, shall be construed liberally in favor of protecting natural land and water resources.
C. 
Words used in the present tense shall include the future, and words used in the singular number shall include the plural, and the plural the singular, unless the context clearly indicates the contrary.
D. 
Terms not specifically defined in this chapter shall have the meaning customarily assigned to them.
E. 
In case of conflict between Township maps and the definitions in this chapter, the definition shall control.
A. 
Nothing in this chapter shall be interpreted to conflict with present or future state statutes in the same subject matter. Conflicting provisions of this chapter shall be abrogated to the extent of the conflict. The provisions of this chapter shall be construed, if possible, to be consistent with and in addition to relevant state regulations and statutes.
B. 
In their interpretation and application, the provisions of this chapter shall be held to be minimum requirements and shall be liberally construed in favor of the Township Board and shall not be deemed a limitation or repeal of any other powers granted by state statutes.
C. 
This chapter is not intended to repeal, abrogate or impair any existing easements, covenants, or deed restrictions. However, where this chapter imposes greater restrictions, the provisions of this chapter shall prevail. If there is another ordinance that is inconsistent, the terms of the ordinance that is most restrictive shall apply.
The following words, terms and phrases, when used in this chapter, shall have the meanings ascribed to them in this section, except where the context clearly indicates a different meaning:
ACCELERATED SOIL EROSION
The increased movement of soils that occurs as a result of man's activities.
CONVEYANCE FACILITY
A storm drain, as defined in this chapter.
DETENTION BASIN
A structure or facility, natural or artificial, which stores stormwater on a temporary basis and releases it at a controlled rate. A detention basin may drain completely after a storm event, or it may be a pond with a fixed minimum water elevation between runoff events.
DISCHARGE
The rate of flow of water at a given point and time, measured in cubic feet per second.
DISTURBED AREA
An area of land subjected to the removal of vegetative cover and/or earth-moving activities.
DRAINAGE SYSTEM
All facilities, measures, areas, and structures which serve to convey, catch, filter, store, and/or receive stormwater, either on a temporary or permanent basis (also see definitions for primary drainage system and secondary drainage system).
EARTH CHANGE
A human-made change in the natural cover or topography of land, including cut and fill activities, which may result in or contribute to soil erosion or sedimentation of watercourses or wetlands. Earth change does not include the practice of plowing and tilling soil for the purpose of crop production.
ENGINEERED GRADING PLAN
A map which shows alterations of topography, alterations of watercourses, flow directions of stormwater runoff, and proposed stormwater management and erosion control measures.
FLOOD
A temporary rise in the level of any water body, watercourse or wetland which inundates areas not ordinarily covered by water.
FLOODPLAIN
The relatively flat areas or lowlands adjoining a watercourse or a body of water which has been or may be covered by floodwater.
INFILTRATION FACILITY
A structure or designated area which allows runoff to gradually seep into the ground, e.g., french drains, seepage pits, infiltration basin, dry well, or perforated pipe.
MAINTENANCE AGREEMENT
A binding agreement which sets forth the terms and conditions for the maintenance of erosion control measures and stormwater facilities.
NONEROSIVE VELOCITY
A rate of flow of stormwater which does not cause erosion.
OFF-SITE FACILITY
All or part of a drainage system which is located partially or completely off of the development site which it serves.
PEAK RATE OF DISCHARGE
The maximum allowable rate of stormwater flow from a storm event, as measured at a given point and time in cubic feet per second.
PERSON
Any individual, firm, partnership, association, corporation, company, or organization of any kind, including government agencies, conducting operations within the Township.
PRIMARY DRAINAGE SYSTEM
Facilities, structures, and areas which convey, store, or receive runoff from storms up to a ten-year frequency.
PROPRIETOR
A person, public corporation or authority, or a government agency that holds an interest in land, whether recorded or not.
PUBLIC STORM SEWER
A drainage system serving a platted subdivision or other development which has been designed and constructed to be operated and maintained by the County Water Resources Commissioner or the County Road Commission.
RECEIVING BODY OF WATER
Any watercourse, lake, pond or wetland into which surface waters are directed, either naturally or artificially.
RETENTION BASIN
A holding area for stormwater, either natural or human-made, which does not have an outlet to adjoining watercourses or wetlands. Water is removed from retention basins through infiltration and/or evaporation processes, and retention basins may or may not have a permanent pool of water.
RUNOFF
The part of precipitation which flows over the land.
SECONDARY DRAINAGE SYSTEM
Facilities, structures and areas which convey, store or receive runoff from storms of more than a ten-year frequency and up to a one-hundred-year frequency.
SEDIMENT
Mineral or organic solid particulate matter that has been removed from its site of origin by the processes of soil erosion, is in suspension in water, or is being transported.
SITE
Any tract, lot or parcel of land or combination of tracts, lots or parcels of land proposed for development.
SOIL EROSION
The wearing away of land by the action of wind, water, gravity or a combination thereof.
SOIL EROSION CONTROL MEASURES
A structure, facility, barrier, berm, vegetative cover, basin, and/or other installations designed to control accelerated soil erosion. Temporary measures are installed to control soil erosion during construction or until soils in the contributing drainage area are stabilized. Permanent measures remain after the project is completed.
STORAGE FACILITY
A basin, structure, or area, either natural or human-made, which is capable of holding stormwater for the purpose of reducing the rate of discharge from the site.
STORM DRAIN
A conduit, pipe, swale, natural channel or human-made structure which serves to transport stormwater runoff. Storm drains may be either enclosed conduits or unenclosed drains.
STORMWATER MANAGEMENT MEASURES AND FACILITIES
Any facility, structure, channel, area, or measure which serves to control stormwater runoff in accordance with the purposes and standards of this chapter.
STORMWATER MANAGEMENT PLAN
Maps and written information which describe the way in which soil erosion and stormwater flows are proposed to be controlled, both during and after construction.
STORMWATER MANAGEMENT SYSTEM
The primary drainage system, the secondary drainage system, and all erosion control measures, whether temporary or permanent.
SWALE
Low-lying area with gradual slopes which transports stormwater.
WATERCOURSE
See the definition of "watercourse" in § 210-2.
WATERSHED
A land area which contributes runoff to a receiving body of water, otherwise known as a "drainage area."
WETLANDS
See the definition of "wetlands" in § 210-2.
A. 
Generally. Every new development or earth change in the Township shall have either a stormwater management plan or an engineered grading plan, depending on the type of development, as listed below.
B. 
Stormwater management plan.
(1) 
A stormwater management plan shall be submitted and reviewed in accordance with requirements of Article II of this chapter. The following types of developments and earth changes require a stormwater management plan:
(a) 
Land development proposals subject to site plan review requirements in the Zoning Ordinance.
(b) 
Subdivision plat and condominium proposals.[1]
[1]
Editor's Note: Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. II).
(c) 
Land divisions which involve public or private road developments regulated under Chapter 250, Land Divisions and Subdivisions, Part 2, Partition of Platted Lots.
(d) 
Any proposal to mine, excavate, or clear and grade one acre or more of land for purposes other than agriculture, routine landscaping, and gardening.
(e) 
Development projects of federal, state and local agencies.
(2) 
Approval of final development plans, site plans, and final preliminary subdivision plats and condominiums shall not be granted prior to approval of the stormwater management plan.[2]
[2]
Editor's Note: Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. II).
C. 
Engineered grading plan.
(1) 
An engineered grading plan shall be submitted and reviewed in accordance with requirements of Article III of this chapter. The following types of new construction of single-family housing units require an engineered grading plan:
(a) 
Acreage parcels.
(b) 
Platted subdivision lots.
(2) 
The engineered grading plan shall be approved by the Township Engineer and the designated Township Building Official prior to the issuance of any building permit.
[Amended 6-8-1999 by Ord. No. 81]
A. 
Any person found responsible for violation of any of the provisions of this chapter shall be subject to a civil fine as set forth in Chapter 1, Article I, Definitions; General Penalty, of the Code of the Charter Township of Oakland. In addition to ordering the person determined to be responsible for a municipal civil infraction to pay a civil fine, costs, damages and expenses, the Judge or Magistrate shall be authorized to issue any judgment, writ or order necessary to enforce or enjoin violation of this chapter.[1]
[1]
Editor's Note: Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. II).
B. 
The Township Board, in addition to other remedies, may institute any appropriate action or proceeding to abate or restrain the violation.
C. 
Each day's continuance of a violation shall be deemed as separate and distinct offense. Expenses in connection with such action shall be assessed as damages against the violation.
D. 
The approval or disapproval of any stormwater management plan shall not have any effect on any remedy of any person at law or in equity.