A.Â
Statutory Authorization. The Legislature of the State of Missouri
has, in Section 77.260, RSMo., delegated the responsibility to local
governmental units to adopt floodplain management regulations designed
to protect the health, safety and general welfare. Therefore, the
City Council of the City of Trenton, Missouri, ordains as follows.
B.Â
Findings Of Fact.
1.Â
Flood Losses Resulting From Periodic Inundation. The special
flood hazard areas of the City of Trenton, Missouri, are subject to
inundation which results in loss of life and property, health and
safety hazards, disruption of commerce and governmental services,
extraordinary public expenditures for flood protection and relief,
and impairment of the tax base; all of which adversely affect the
public health, safety and general welfare.
2.Â
General Causes Of The Flood Losses. These flood losses are caused
by:
3.Â
Methods Used To Analyze Flood Hazards. The Flood Insurance Study
(FIS) that is the basis of this Article uses a standard engineering
method of analyzing flood hazards which consists of a series of interrelated
steps.
a.Â
Selection of a base flood that is based upon engineering calculations
which permit a consideration of such flood factors as its expected
frequency of occurrence, the area inundated, and the depth of inundation.
The base flood selected for this Article is representative of large
floods which are characteristic of what can be expected to occur on
the particular streams subject to this Article. It is in the general
order of a flood which could be expected to have a one-percent chance
of occurrence in any one (1) year as delineated on the Federal Insurance
Administrator's FIS and illustrative materials for Grundy County,
Missouri, dated May 1, 2020, as amended and any future revisions thereto.
b.Â
Calculation of water surface profiles are based on a standard
hydraulic engineering analysis of the capacity of the stream channel
and overbank areas to convey the regulatory flood.
c.Â
Computation of a floodway required to convey this flood without
increasing flood heights more than one (1) foot at any point.
d.Â
Delineation of floodway encroachment lines within which no development
is permitted that would cause any increase in flood height.
C.Â
Statement Of Purpose. It is the purpose of this Article to promote the public health, safety and general welfare; to minimize those losses described in Subsection (B)(1) of this Section; to establish or maintain the community's eligibility for participation in the National Flood Insurance Program (NFIP) as defined in 44 Code of Federal Regulations (CFR) 59.22(a)(3); and to meet the requirements of 44 CFR 60.3(d) by applying the provisions of this Article to:
1.Â
Restrict or prohibit uses that are dangerous to health, safety
or property in times of flooding or cause undue increases in flood
heights or velocities;
2.Â
Require uses vulnerable to floods, including public facilities
that serve such uses, be provided with flood protection at the time
of the initial construction; and
3.Â
Protect individuals from buying lands that are unsuited for
the intended development purpose due to the flood hazard.
[1]
Editor's Note: Section 1 of this ordinance replaced former
Part 1, Floodways and Floodplains, as adopted and amended by R.O.
2011 §§ 400.803 — 400.830; Ord. No. 87-9 §§ 1.0
— 12.0, 3-25-1987; Ord. No. 02-23 § 1, 8-26-2002;
Ord. No. 04-25 § 1, 7-26-2004.
[Ord. No. 2015-39 §1, 4-13-2015; Ord. No. 2020-2, 1-13-2020]
A.Â
Lands To Which This Article Applies. This Article shall apply to all lands within the jurisdiction of the City of Trenton, Missouri, identified as numbered and unnumbered A zones and AE zones on the Flood Insurance Rate Map (FIRM) panels for Grundy County, on map panels 29079C0284C, 29079C0295C, 29079C0301C, 29079C0303C, 29079C0304C, 29079C310C, 29079C0315C, dated May 1, 2020, as amended, and any future revisions thereto. In all areas covered by this Article, no development shall be permitted except through the issuance of a floodplain development permit, granted by the City Council or its duly designated representative under such safeguards and restrictions as the City Council or the designated representative may reasonably impose for the promotion and maintenance of the general welfare, health of the inhabitants of the community and as specifically noted in Section 400.813.
B.Â
Floodplain Administrator. The Code Enforcement Officer is hereby
designated as the Floodplain Administrator under this Article.
C.Â
Compliance. No development located within the special flood hazard
areas of this community shall be located, extended, converted or structurally
altered without full compliance with the terms of this Article and
other applicable regulations.
D.Â
Abrogation And Greater Restrictions. It is not intended by this Article
to repeal, abrogate or impair any existing easements, covenants or
deed restrictions. However, where this Article imposes greater restrictions,
the provisions of this Article shall prevail. All other ordinances
inconsistent with this Article are hereby repealed to the extent of
the inconsistency only.
E.Â
Interpretation. In the interpretation and application of this Article,
the provisions of this Article shall be held to be minimum requirements,
shall be liberally construed in favor of the Governing Body, and shall
not be deemed a limitation or repeal of any other powers granted by
State Statutes.
F.Â
Warning And Disclaimer Of Liability. The degree of flood protection
required by this Article is considered reasonable for regulatory purposes
and is based on engineering and scientific methods of study. Larger
floods may occur on rare occasions, or the flood heights may be increased
by man-made or natural causes, such as ice jams and bridge openings
restricted by debris. This Article does not imply that areas outside
the floodway and flood fringe or land uses permitted within such areas
will be free from flooding or flood damage. This Article shall not
create a liability on the part of the City of Trenton, any officer
or employee thereof, for any flood damages that may result from reliance
on this Article or any administrative decision lawfully made thereunder.
G.Â
Severability. If any Section, clause, provision, or portion of this
Article is adjudged unconstitutional or invalid by a court of appropriate
jurisdiction, the remainder of this Article shall not be affected
thereby.
[Ord. No. 2015-39 §1, 4-13-2015]
A.Â
Floodplain Development Permit Required. A floodplain development permit shall be required for all proposed construction or other development, including the placement of manufactured homes, in the areas described in Section 400.805(A). No person, firm, corporation, or unit of government shall initiate any development or substantial-improvement or cause the same to be done without first obtaining a separate floodplain development permit for each structure or other development.
B.Â
Designation Of Floodplain Administrator. The Code
Enforcement Officer is hereby appointed to administer and implement
the provisions of this ordinance.
C.Â
Duties And Responsibilities Of Code Enforcement Officer As
Floodplain Administrator. Duties of the Code Enforcement
Officer shall include, but not be limited to:
1.Â
Review of all applications for floodplain development permits
to assure that sites are reasonably safe from flooding and that the
floodplain development permit requirements of this ordinance have
been satisfied;
2.Â
Review of all applications for floodplain development permits
for proposed development to assure that all necessary permits have
been obtained from Federal, State, or local governmental agencies
from which prior approval is required by Federal, State, or local
law;
3.Â
Review all subdivision proposals and other proposed new development,
including manufactured home parks or subdivisions, to determine whether
such proposals will be reasonably safe from flooding;
4.Â
Issue floodplain development permits for all approved applications;
5.Â
Notify adjacent communities and the Missouri State Emergency
Management Agency (Mo SEMA) prior to any alteration or relocation
of a watercourse, and submit evidence of such notification to the
Federal Emergency Management Agency (FEMA);
6.Â
Assure that the flood-carrying capacity is not diminished and
shall be maintained within the altered or relocated portion of any
watercourse.
7.Â
Verify and maintain a record of the actual elevation (in relation
to mean sea level) of the lowest floor, including basement, of all
new or substantially improved structures;
8.Â
Verify and maintain a record of the actual elevation (in relation
to mean sea level) that the new or substantially improved non-residential
structures have been floodproofed.
9.Â
When floodproofing techniques are utilized for a particular
non-residential structure, the Code Enforcement Officer shall require
certification from a registered professional engineer or architect.
D.Â
Application For Floodplain Development Permit. To
obtain a floodplain development permit, the applicant shall first
file an application in writing on a form furnished for that purpose.
Every floodplain development permit application shall:
1.Â
Describe the land on which the proposed work is to be done by
lot, block and tract, house and street address, or similar description
that will readily identify and specifically locate the proposed structure
or work;
2.Â
Identify and describe the work to be covered by the floodplain
development permit;
3.Â
Indicate the use or occupancy for which the proposed work is
intended;
4.Â
Indicate the assessed value of the structure and the fair market
value of the improvement;
5.Â
Specify whether development is located in a designated flood
fringe or floodway;
6.Â
Identify the existing base flood elevation and the elevation
of the proposed development;
7.Â
Give such other information as reasonably may be required by
the Code Enforcement Officer;
8.Â
Be accompanied by plans and specifications for proposed construction;
and
9.Â
Be signed by the permittee or his authorized agent who may be
required to submit evidence to indicate such authority.
[Ord. No. 2015-39 §1, 4-13-2015]
A.Â
General Standards.
1.Â
No permit for floodplain development shall be granted for new
construction, substantial-improvements, and other improvements, including
the placement of manufactured homes, within any numbered or unnumbered
A zones and AE zones, unless the conditions of this Section are satisfied.
2.Â
All areas identified as unnumbered A zones on the FIRM are subject
to inundation of the 100-year flood; however, the base flood elevation
is not provided. Development within unnumbered A zones is subject
to all provisions of this ordinance. If Flood Insurance Study data
is not available, the community shall obtain, review, and reasonably
utilize any base flood elevation or floodway data currently available
from Federal, State, or other sources.
3.Â
Until a floodway is designated, no new construction, substantial
improvements, or other development, including fill, shall be permitted
within any numbered A zone or AE zone on the FIRM, unless it is demonstrated
that the cumulative effect of the proposed development, when combined
with all other existing and anticipated development, will not increase
the water surface elevation of the base flood more than one (1) foot
at any point within the community.
4.Â
All new construction, subdivision proposals, substantial-improvements,
prefabricated structures, placement of manufactured homes, and other
developments shall require:
a.Â
Design or adequate anchorage to prevent floatation, collapse,
or lateral movement of the structure resulting from hydrodynamic and
hydrostatic loads, including the effects of buoyancy;
b.Â
Construction with materials resistant to flood damage;
c.Â
Utilization of methods and practices that minimize flood damages;
d.Â
All electrical, heating, ventilation, plumbing, air-conditioning
equipment, and other service facilities be designed and/or located
so as to prevent water from entering or accumulating within the components
during conditions of flooding;
e.Â
New or replacement water supply systems and/or sanitary sewage
systems be designed to minimize or eliminate infiltration of floodwaters
into the systems and discharges from the systems into floodwaters,
and on-site waste disposal systems be located so as to avoid impairment
or contamination; and
f.Â
Subdivision proposals and other proposed new development, including
manufactured home parks or subdivisions, located within special flood
hazard areas are required to assure that:
(1)Â
All such proposals are consistent with the need
to minimize flood damage;
(2)Â
All public utilities and facilities, such as sewer,
gas, electrical and water systems are located and constructed to minimize
or eliminate flood damage;
(3)Â
Adequate drainage is provided so as to reduce exposure
to flood hazards; and
(4)Â
All proposals for development, including proposals
for manufactured home parks and subdivisions, of five (5) acres or
fifty (50) lots, whichever is lesser, include within such proposals
base flood elevation data.
5.Â
Storage material and equipment.
a.Â
The storage or processing of materials within the special flood
hazard area that are in time of flooding buoyant, flammable, explosive,
or could be injurious to human, animal, or plant life is prohibited.
b.Â
Storage of other material or equipment may be allowed if not
subject to major damage by floods, if firmly anchored to prevent flotation
or if readily removable from the area within the time available after
a flood warning.
6.Â
Nonconforming use. A structure, or the use
of a structure or premises that is lawful before the passage or amendment
of this Article, but which is not in conformity with the provisions
of this ordinance, may be continued subject to the following conditions:
a.Â
If such structure, use, or utility service is discontinued for
6 (six) consecutive months, any future use of the building shall conform
to this ordinance.
b.Â
If any non-conforming use or structure is destroyed by any means,
including flood, it shall not be reconstructed if the cost is more
than fifty percent (50%) of the predamaged market value of the structure.
This limitation does not include the cost of any alteration to comply
with exiting State or local health, sanitary, building, safety codes,
regulations or the cost of any alteration of a structure listed on
the National Register of Historic Places, the State Inventory of Historic
Places, or local inventory of historic places upon determination.
B.Â
Specific Standards.
1.Â
In all areas identified as numbered and unnumbered A zones and
AE zones, where base flood elevation data have been provided, as set
forth in Subsection(A)(2) of this Section, the following provisions
are required:
a.Â
Residential construction. New construction
or substantial-improvement of any residential structures, including
manufactured homes, shall have the lowest floor, including basement,
elevated to one (1) foot above base flood elevation.
b.Â
Non-residential construction. New construction or substantial-improvement of any commercial, industrial, or other non-residential structures, including manufactured homes, shall have the lowest floor, including basement, elevated to one (1) foot above the base flood elevation or, together with attendant utility and sanitary facilities, be floodproofed so that below the base flood elevation the structure is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. A registered professional engineer or architect shall certify that the standards of this Subsection are satisfied. Such certification shall be provided to the Floodplain Administrator as set forth in Section 400.810(C)(9) of the Trenton City Code.
c.Â
For all new construction and substantial-improvements, that
fully enclosed areas below the lowest floor that are used solely for
parking of vehicles, building access, or storage in an area other
than a basement and that are subject to flooding shall be designed
to automatically equalize hydrostatic flood forces on exterior walls
by allowing for the entry and exit of floodwaters. Designs for meeting
this requirement must either be certified by a registered professional
engineer or architect or meet or exceed the following minimum criteria:
(1)Â
A minimum of two (2) openings having a total net
area of not less than one (1) square inch for every square foot of
enclosed area subject to flooding shall be provided; and
(2)Â
The bottom of all openings shall be no higher than
one (1) foot above grade. Openings may be equipped with screens, louvers,
valves, or other coverings or devices, provided that they permit the
automatic entry and exit of floodwaters.
C.Â
Manufactured Homes.
1.Â
All manufactured homes to be placed within all unnumbered and
numbered A zones and AE zones, on the community's FIRM shall be required
to be installed using methods and practices that minimize flood damage.
For the purposes of this requirement, manufactured homes must be elevated
and anchored to resist flotation, collapse, or lateral movement. Methods
of anchoring may include, but are not limited to, use of over-the-top
or frame ties to ground anchors.
2.Â
All manufactured homes that are placed or substantially improved
within unnumbered or numbered A zones and AE zones, on the community's
FIRM on sites outside of a manufactured home park or subdivision,
in a new manufactured home park or subdivision, in an expansion to
an existing manufactured home park or subdivision; or in an existing
manufactured home park or subdivision on which a manufactured home
has incurred substantial-damage as the result of a flood must be elevated
on a permanent foundation such that the lowest floor of the manufactured
home is elevated to one (1) foot above the base flood elevation and
be securely attached to an adequately anchored foundation system to
resist flotation, collapse, and lateral movement.
3.Â
Manufactured homes to be placed or substantially improved on sites in an existing manufactured home park or subdivision within all unnumbered and numbered A zones and AE zones, on the community's FIRM, that are not subject to the provisions of Section 400.813(C)(2) of the Trenton City Code, must be elevated so that either:
a.Â
The lowest floor of the manufactured home is at one (1) foot
above the base flood level; or
b.Â
The manufactured home chassis is supported by reinforced piers
or other foundation elements of at least equivalent strength that
are no less than thirty-six (36) inches in height above grade and
be securely attached to an adequately anchored foundation system to
resist floatation, collapse, and lateral movement.
D.Â
Floodway. Located within areas of special flood hazard established in Section 400.805(A) are areas designated as floodways. Since the floodway is an extremely hazardous area due to the velocity of flood waters that carry debris and potential projectiles, the following provisions shall apply:
1.Â
The community shall select and adopt a regulatory floodway based
on the principle that the area chosen for the regulatory floodway
must be designed to carry the waters of the base flood without increasing
the water surface elevation of that flood more than one (1) foot at
any point.
2.Â
The community shall prohibit any encroachments, including fill,
new construction, substantial-improvements, and other development
within the adopted regulatory floodway unless it has been demonstrated
through hydrologic and hydraulic analyses performed in accordance
with standard engineering practice that the proposed encroachment
would not result in any increase in flood levels within the community
during the occurrence of the base flood discharge.
3.Â
If it is demonstrated that the proposed encroachment would result
in any increase in flood levels within the community during the occurrence
of the base flood discharge as provided above, all new construction
and substantial-improvements shall comply with all applicable flood
hazard reduction provisions of this Code.
E.Â
Recreational Vehicles. Recreational vehicles placed
on sites within all unnumbered and numbered A zones and AE zones on
the community's FIRM must either:
1.Â
Be on the site for fewer than 180 consecutive days;
2.Â
Be fully licensed and ready for highway use, meaning it is on
its wheels or jacking system, is attached to the site only by quick-disconnect-type
utilities and security devices and has no permanently attached additions;
or
3.Â
Meet the permitting, elevation, and the anchoring requirements
for manufactured homes of this ordinance.
[Ord. No. 2015-39 § 1, 4-13-2015]
A.Â
Establishment Of Appeal Board. The Board of
Adjustment as established by the City of Trenton shall hear and decide
appeals and requests for variances from the floodplain management
requirements of this ordinance.
B.Â
Responsibility Of Appeal Board.
1.Â
Where an application for a floodplain development permit or
request for a variance from the floodplain management regulations
is denied by the Code Enforcement Officer, the applicant may apply
for such floodplain development permit or variance directly to the
Appeal Board, as defined herein.
2.Â
The Board of Adjustment shall hear and decide appeals when it
is alleged that there is an error in any requirement, decision, or
determination made by the Code Enforcement Officer in the enforcement
or administration of this ordinance.
C.Â
Further Appeals. Any person aggrieved by the
decision of the Board of Adjustment may appeal such decision to the
Grundy County Circuit Court as provided in Section 89.110, RSMo.
D.Â
Floodplain Management Variance Criteria. In
passing upon such applications for variances, the Board of Adjustment
shall consider all technical data and evaluations, all relevant factors,
standards specified in other Sections of this ordinance, and the following
criteria:
1.Â
The danger to life and property due to flood damage;
2.Â
The danger that materials may be swept onto other lands to the
injury of others;
3.Â
The susceptibility of the proposed facility and its contents
to flood damage and the effect of such damage on the individual owner;
4.Â
The importance of the services provided by the proposed facility
to the community;
5.Â
The necessity to the facility of a waterfront location, where
applicable;
6.Â
The availability of alternative locations, not subject to flood
damage, for the proposed use;
7.Â
The compatibility of the proposed use with existing and anticipated
development;
8.Â
The relationship of the proposed use to the compressive plan
and floodplain management program for that area;
9.Â
The safety of access to the property in times of flood for ordinary
and emergency vehicles;
10.Â
The expected heights, velocity, duration, rate of rise and sediment
transport of the flood waters, if applicable, expected at the site;
and
11.Â
The costs of providing governmental services during and after
flood conditions, including maintenance and repair of public utilities
and facilities such as sewer, gas, electrical, and water systems;
streets; and bridges.
E.Â
Conditions For Approving Floodplain Management Variances.
1.Â
Generally, variances may be issued for new construction and substantial-improvements to be erected on a lot of one-half (1/2) acre or less in size contiguous to and surrounded by lots with existing structures constructed below the base flood level, providing items in Subsection (E)(2) through (6) below have been fully considered. As the lot size increases beyond the one-half (1/2) acre, the technical justification required for issuing the variance increases.
2.Â
Variances may be issued for the reconstruction, rehabilitation,
or restoration of structures listed on the National Register of Historic
Places, the State Inventory of Historic Places, or local inventory
of historic places upon determination, provided the proposed activity
will not preclude the structure's continued historic designation.
3.Â
Variances shall not be issued within any designated floodway
if any increase in flood levels during the base flood discharge would
result.
4.Â
Variances shall only be issued upon a determination that the
variance is the minimum necessary, considering the flood hazard, to
afford relief.
5.Â
Variances shall only be issued upon:
a.Â
A showing of good and sufficient cause;
b.Â
A determination that failure to grant the variance would result
in exceptional hardship to the applicant; and
c.Â
A determination that the granting of a variance will not result
in increased flood heights, additional threats to public safety, extraordinary
public expense, create nuisances, cause fraud on or victimization
of the public, or conflict with existing local laws or ordinances.
6.Â
A community shall notify the applicant in writing over the signature
of a community official that the issuance of a variance to construct
a structure below base flood level will result in increased premium
rates for flood insurance up to amounts as high as twenty five dollars
($25.00) for one hundred dollars ($100.00) of insurance coverage and
such construction below the base flood level increases risks to life
and property. Such notification shall be maintained with the record
of all variance actions as required by this ordinance.
[Ord. No. 2015-39 §1, 4-13-2015]
Violation of the provisions of this ordinance or failure to
comply with any of its requirements (including violations of conditions
and safeguards established in connection with granting of variances)
shall constitute a misdemeanor. Any person who violates this ordinance
or fails to comply with any of its requirements shall, upon conviction
thereof, be fined not more than five hundred dollars ($500.00) and,
in addition, shall pay all costs and expenses involved in the case.
Each day such violation continues shall be considered a separate offense.
Nothing herein contained shall prevent the City of Trenton or other
appropriate authority from taking such other lawful action as is necessary
to prevent or remedy any violation.
[Ord. No. 2015-39 §1, 4-13-2015]
The regulations, restrictions, and boundaries set forth in this
ordinance may from time to time be amended, supplemented, changed,
or appealed to reflect any and all changes in the National Flood Disaster
Protection Act of 1973; provided, however, that no such action may
be taken until after a public hearing in relation thereto, at which
parties of interest and citizens shall have an opportunity to be heard.
Notice of the time and place of such hearing shall be published in
a newspaper of general circulation in the City of Trenton; at least
twenty (20) days shall elapse between the date of this publication
and the public hearing. A copy of such amendments will be provided
to the Region VII office of the Federal Emergency Management Agency
(FEMA). The regulations of this ordinance are in compliance with the
National Flood Insurance Program (NFIP) regulations.
[Ord. No. 2015-39 §1, 4-13-2015]
A.Â
ACCESSORY STRUCTURE
ACTUARIAL RATES
ADMINISTRATOR
AGENCY
AGRICULTURAL COMMODITIES
AGRICULTURAL STRUCTURE
APPEAL
APPURTENANT STRUCTURE
AREA OF SPECIAL FLOOD HAZARD
BASE FLOOD
BASEMENT
BUILDING
COMMUNITY
DEVELOPMENT
ELEVATED BUILDING
ELIGIBLE COMMUNITY or PARTICIPATING COMMUNITY
EXISTING CONSTRUCTION
EXISTING MANUFACTURED HOME PARK OR SUBDIVISION
EXPANSION TO AN EXISTING MANUFACTURED HOME PARK OR SUBDIVISION
FLOOD BOUNDARY AND FLOODWAY MAP (FBFM)
FLOOD ELEVATION DETERMINATION
FLOOD ELEVATION STUDY
FLOOD FRINGE
FLOOD HAZARD BOUNDARY MAP (FHBM)
FLOOD INSURANCE RATE MAP (FIRM)
FLOOD INSURANCE STUDY (FIS)
FLOOD or FLOODING
FLOODPLAIN MANAGEMENT
FLOODPLAIN MANAGEMENT REGULATIONS
FLOODPLAIN or FLOOD-PRONE AREA
FLOODPROOFING
FLOODWAY ENCROACHMENT LINES
FLOODWAY or REGULATORY FLOODWAY
FREEBOARD
FUNCTIONALLY DEPENDENT USE
HIGHEST ADJACENT GRADE
HISTORIC STRUCTURE
1.Â
2.Â
3.Â
LOWEST FLOOR
MANUFACTURED HOME
MANUFACTURED HOME PARK OR SUBDIVISION
MAP
MARKET VALUE or FAIR MARKET VALUE
MEAN SEA LEVEL
NEW CONSTRUCTION
NEW MANUFACTURED HOME PARK OR SUBDIVISION
(NFIP)
100-YEAR FLOOD
PARTICIPATING COMMUNITY (ALSO KNOWN AS AN "ELIGIBLE COMMUNITY)
PERSON
PRINCIPALLY ABOVE GROUND
RECREATIONAL VEHICLE
1.Â
2.Â
3.Â
4.Â
REMEDY A VIOLATION
REPETITIVE LOSS
RISK PREMIUM RATES
SPECIAL FLOOD HAZARD AREA
SPECIAL HAZARD AREA
START OF CONSTRUCTION
STATE COORDINATING AGENCY
STRUCTURE
SUBSTANTIAL-DAMAGE
1.Â
2.Â
a.Â
b.Â
c.Â
SUBSTANTIAL IMPROVEMENT
1.Â
2.Â
a.Â
b.Â
c.Â
SUBSTANTIALLY IMPROVED EXISTING MANUFACTURED HOME PARKS OR SUBDIVISIONS
VARIANCE
VIOLATION
WATER SURFACE ELEVATION
Unless specifically defined below, words or phrases used in this
ordinance shall be interpreted so as to give them the same meaning
they have in common usage and to give this ordinance its most reasonable
application.
The same as "appurtenant structure."
See "risk premium rates."
The Federal Insurance Administrator.
The Federal Emergency Management Agency (FEMA).
Agricultural products and livestock.
Any structure used exclusively in connection with the production,
harvesting, storage, drying, or raising of agricultural commodities.
A request for review of the Floodplain Administrator's interpretation
of any provision of this ordinance or a request for a variance.
A structure that is on the same parcel of property as the
principal structure to be insured and the use of which is incidental
to the use of the principal structure.
Is the land in the floodplain within a community subject
to a one-percent or greater chance of flooding in any given year.
The flood having a one-percent chance of being equaled or
exceeded in any given year.
Any area of the structure having its floor subgrade (below
ground level) on all sides.
See "structure."
The City of Trenton.
Any man-made change to improved or unimproved real estate,
including but not limited to buildings or other structures, levees,
levee systems, mining, dredging, filling, grading, paving, excavation
or drilling operations, or storage of equipment or materials.
For insurance purposes, a non-basement building which has
its lowest elevated floor raised above ground level by foundation
walls, shear walls, posts, piers, pilings, or columns.
A community for which the Administrator has authorized the
sale of flood insurance under the National Flood Insurance Program
(NFIP).
For the purposes of determining rates, structures for which
the start of construction commenced before the effective date of the
FRIM or before January 1, 1975, for FIRMs effective before that date.
Existing construction may also be referred to as "existing structures."
A manufactured home park or subdivision for which the construction
of facilities for servicing the lots on which the manufactured homes
are to be affixed (including, at a minimum, the installation of utilities,
the construction of streets, and either final site grading or the
pouring of concrete pads) is completed before the effective date of
the floodplain management regulations adopted by a community.
The preparation of additional sites by the construction of
facilities for servicing the lots on which the manufactured homes
are to be affixed (including the installation of utilities, the construction
of streets, and either final site grading or the pouring of concrete
pads).
An official map of a community on which the Administrator
has delineated both special flood hazard areas and the designated
regulatory floodway.
A determination by the Administrator of the water surface
elevations of the base flood, that is, the flood level that has a
one-percent or greater chance of occurrence in any given year.
An examination, evaluation and determination of flood hazards.
The area outside the floodway encroachment lines, but still
subject to inundation by the regulatory flood.
An official map of a community, issued by the Administrator,
where the boundaries of the flood areas having special flood hazards
have been designated as (unnumbered or numbered) A zones.
An official map of a community, on which the Administrator
has delineated both the special flood hazard areas and the risk premium
zones applicable to the community.
An examination, evaluation and determination of flood hazards
and, if appropriate, corresponding water surface elevations.
A general and temporary condition of partial or complete
inundation of normally dry land areas from the overflow of inland
and/or the unusual and rapid accumulation or runoff of surface waters
from any source.
The operation of an overall program of corrective and preventive
measures for reducing flood damage, including but not limited to emergency
preparedness plans, flood control works, and floodplain management
regulations.
Zoning ordinances, subdivision regulations, building codes,
health regulations, special purpose ordinances (such as floodplain
and grading ordinances) and other applications of Police power. The
term describes such State or local regulations, in any combination
thereof, that provide standards for the purpose of flood damage prevention
and reduction.
Any land area susceptible to being inundated by water from
any source (see "flooding").
Any combination of structural and non-structural additions,
changes, or adjustments to structures that reduce or eliminate flood
damage to real estate or improved real property, water and sanitary
facilities, or structures and their contents.
The lines marking the limits of floodways on Federal, State
and local floodplain maps.
The channel of a river or other watercourse and the adjacent
land areas that must be reserved in order to discharge the base flood
without cumulatively increasing the water surface elevation more than
one (1) foot.
A factor of safety usually expressed in feet above a flood
level for purposes of floodplain management. Freeboard tends to compensate
for the many unknown factors that could contribute to flood heights
greater than the height calculated for a selected size flood and floodway
conditions, such as bridge openings and the hydrological effect of
urbanization of the watershed.
A use that cannot perform its intended purpose unless it
is located or carried out in close proximity to water. This term includes
only docking facilities and facilities that are necessary for the
loading and unloading of cargo or passengers, but does not include
long-term storage or related manufacturing facilities.
The highest natural elevation of the ground surface prior
to construction next to the proposed walls of a structure.
Any structure that is:
Listed individually in the National Register of Historic Places
(a listing maintained by the Department of the Interior) or preliminarily
determined by the Secretary of the Interior as meeting the requirements
for individual listing on the National Register;
Certified or preliminarily determined by the Secretary of the
Interior as contributing to the historical significance of a registered
historic district or a district preliminarily determined by the Secretary
to qualify as a registered historic district;
Individually listed on a local inventory of historic places,
as provided in the Trenton City Code.
The lowest floor of the lowest enclosed area, including basement.
An unfinished or flood-resistant enclosure, usable solely for parking
of vehicles, building access, or storage, in an area other than a
basement area, is not considered a building's lowest floor, provided
that such enclosure is not built so as to render the structure in
violation of the applicable floodproofing design requirements of this
ordinance.
A structure, transportable in one (1) or more sections, that
is built on a permanent chassis and is designed for use with or without
a permanent foundation when attached to the required utilities. The
term "manufactured home" does not include a recreational vehicle.
A parcel (or contiguous parcels) of land divided into two
(2) or more manufactured home lots for rent or sale.
The Flood Hazard Boundary Map (FHBM), Flood Insurance Rate
Map (FIRM), or the Flood Boundary and Floodway Map (FBFM) for a community
issued by the Federal Emergency Management Agency (FEMA).
An estimate of what is fair, economic, just and equitable
value under normal local market conditions.
For the purposes of the National Flood Insurance Program
(NFIP), the National Geodetic Vertical Datum (NGVD) of 1929 or other
datum, to which base flood elevations shown on a community's Flood
Insurance Rate Map (FIRM) are referenced.
For the purposes of determining insurance rates, structures
for which the start of construction commenced on or after the effective
date of an initial FIRM or after December 31, 1974, whichever is later,
and includes any subsequent improvements to such structures. For floodplain
management purposes, new construction means structures for which the
start of construction commenced on or after the effective date of
the floodplain management regulations adopted by a community and includes
any subsequent improvements to such structures.
A manufactured home park or subdivision for which the construction
of facilities for servicing the lot on which the manufactured homes
are to be affixed (including, at a minimum, the installation of utilities,
the construction of streets, and either final site grading or the
pouring of concrete pads) is completed on or after the effective date
of floodplain management regulations adopted by the community.
The National Flood Insurance Program.
See "base flood."
A community in which the Administrator has authorized the
sale of flood insurance.
Includes any individual or group of individuals, corporation,
partnership, association, or any other entity, including Federal,
State, and local governments and agencies.
That at least fifty one percent (51%) of the actual cash
value of the structure, less land value, is above ground.
A vehicle which is:
Built on a single chassis;
Four hundred (400) square feet or less when measured at the
largest horizontal projections;
Designed to be self-propelled or permanently towable by a light-duty
truck; and
Designed primarily not for use as a permanent dwelling but as
temporary living quarters for recreational, camping, travel, or seasonal
use.
To bring the structure or other development into compliance
with Federal, State, or local floodplain management regulations; or,
if this is not possible, to reduce the impacts of its non-compliance.
Flood-related damages sustained by a structure on two (2)
separate occasions during a ten-year period for which the cost of
repairs at the time of each such flood event equals or exceeds twenty-five
percent (25%) of the market value of the structure before the damage
occurred.
Those rates established by the Administrator pursuant to
individual community studies and investigations which are undertaken
to provide flood insurance in accordance with Section 1307 of the
National Flood Disaster Protection Act of 1973 and the accepted actuarial
principles. Risk premium rates include provisions for operating costs
and allowances.
See "area of special flood hazard."
An area having special flood hazards and shown on an FHBM,
FIRM or FBFM as zones (unnumbered or numbered) A and AE.
Includes substantial-improvements, and means the date the
building permit was issued, provided the actual start of construction,
repair, reconstruction, rehabilitation, addition placement, or other
improvements were within one hundred eighty (180) days of the permit
date. The actual start means either the first placement of permanent
construction of a structure on a site, such as the pouring of slabs
or footings, the installation of piles, the construction of columns,
any work beyond the stage of excavation, or the placement of a manufactured
home on a foundation. Permanent construction does not include land
preparation, such as clearing, grading and filling, the installation
of streets and/or walkways, excavation for a basement, footings, piers,
foundations, the erection of temporary forms, nor installation on
the property of accessory structures, such as garages or sheds not
occupied as dwelling units or not part of the main structure. For
a substantial-improvement, the actual start of construction means
the first alteration of any wall, ceiling, floor, or other structural
part of a building, whether or not that alteration affects the external
dimensions of the building.
The State Emergency Management Agency of the Missouri Department
of Public Safety.
For floodplain management purposes, a walled and roofed building,
including a gas or liquid storage tank, that is principally above
ground, as well as a manufactured home. For insurance purposes, a
walled and roofed building, other than a gas or liquid storage tank
that is principally above ground and affixed to a permanent site,
as well as a manufactured home on a permanent foundation. For the
latter purpose, the term includes a building while in the course of
construction, alteration or repair, but does not include building
materials or supplies intended for use in such construction, alteration
or repair, unless such materials or supplies are within an enclosed
building on the premises.
Damage of any origin sustained by a structure whereby the cost
of restoring the structure to its before-damaged condition would equal
or exceed fifty percent (50%) of the market value of the structure
before the damage occurred. The term includes repetitive loss buildings
(see definition). For the purposes of this definition, repair is considered
to occur when the first repair or reconstruction of any wall, ceiling,
floor, or other structural part of the building commences.
The term does not apply to:
Any project for improvement of a building required to comply
with existing health, sanitary, or safety code specifications which
have been identified by the Code Enforcement Official and which are
solely necessary to assure safe living conditions; or
Any alteration of a historic structure, provided that the alteration
will not preclude the structure's continued designation as a historic
structure; or
Any improvement to a building.
Any combination of reconstruction, alteration, or improvement
to a building, taking place during a ten-year period, in which the
cumulative percentage of improvement equals or exceeds fifty percent
(50%) of the current market value of the building. For the purposes
of this definition, an improvement occurs when the first alteration
of any wall, ceiling, floor, or other structural part of the building
commences, whether or not that alteration affects the external dimensions
of the building. This term includes structures which have incurred
repetitive loss or substantial damage, regardless of the actual repair
work done.
The term does not apply to:
Any project for improvement of a building required to comply
with existing health, sanitary, or safety code specifications which
have been identified by the Code Enforcement Official and which are
solely necessary to assure safe living conditions; or
Any alteration of a historic structure, provided that the alteration
will not preclude the structure's continued designation as a historic
structure; or
Any building that has been damaged from any source or is categorized
as repetitive loss.
The repair, reconstruction, rehabilitation or improvement
of the streets, utilities and pads equals or exceeds fifty percent
(50%) of the value of the streets, utilities and pads before the repair,
reconstruction or improvement commenced.
A grant of relief by the community from the terms of a floodplain
management regulation. Flood insurance requirements remain in place
for any varied use or structure and cannot be varied by the community.
The failure of a structure or other development to be fully
compliant with the community's floodplain management regulations.
A structure or other development without the elevation certificate,
other certifications, or other evidence of compliance required by
this ordinance is presumed to be in violation until such time as that
documentation is provided.
The height, in relation to the National Geodetic Vertical
Datum (NGVD) of 1929 (or other datum where specified) of floods of
various magnitudes and frequencies in the floodplain.
[R.O. 2011 §400.833; Ord. No. 01-10 §1(17.13), 4-9-2001; Ord. No. 04-25 §1, 7-26-2004]
A.Â
To
the extent practicable, all development shall conform to the natural
contours of the land and natural and pre-existing manmade drainage
ways shall remain undisturbed.
B.Â
To
the extent practicable, lot boundaries shall be made to coincide with
natural and pre-existing manmade drainage ways within subdivisions
to avoid the creation of lots that can be built upon only by altering
such drainage ways.
[R.O. 2011 §400.835; Ord. No. 01-10 §1(17.14), 4-9-2001; Ord. No. 04-25 §1, 7-26-2004]
A.Â
All
developments shall be provided with a drainage system that is adequate
to prevent the undue retention of surface water on the development
site. Surface water shall not be regarded as unduly retained if:
1.Â
The retention results from a technique, practice or device deliberately
installed as part of an approved sedimentation or stormwater runoff
control plan; or
2.Â
The retention is not substantially different in location or degree
than that experienced by the development site in its pre-development
stage, unless such retention presents a danger to health or safety.
B.Â
No
surface water may be channeled or directed into a sanitary sewer.
C.Â
Whenever
practicable, the drainage system of a development shall coordinate
with and connect to the drainage systems or drainage ways on surrounding
properties or streets.
D.Â
Private
roads and access ways within unsubdivided development shall utilize
curb and gutter and storm drains to provide adequate drainage if the
grade of such roads or access ways is too steep to provide drainage
in another manner or if other sufficient reasons exist to require
such construction as determined by the City Planning and Zoning Commission.
E.Â
The
edge of pavement shall be constructed so as to protect against subgrade
fouling and against water seepage directly into the road subgrade.
[R.O. 2011 §400.838; Ord. No. 01-10 §1(17.15), 4-9-2001; Ord. No. 04-25 §1, 7-26-2004]
A.Â
All
developments shall be constructed and maintained so that adjacent
properties are not unreasonably burdened with surface waters as a
result of such developments. More specifically:
1.Â
No development may be constructed or maintained so that such development
unreasonably impedes the natural flow of water from higher adjacent
properties across such development, thereby unreasonably causing substantial
damage to such higher adjacent properties; and
2.Â
No development may be constructed or maintained so that surface waters
from such development are unreasonably collected and channeled onto
lower adjacent properties at such locations or at such volumes as
to cause substantial damage to such lower adjacent properties.
[R.O. 2011 §400.840; Ord. No. 01-10 §1(17.16), 4-9-2001; Ord. No. 04-25 §1, 7-26-2004]
A.Â
No
zoning, special use or conditional use permit may be issued and final
plat approval for subdivisions may not be given with respect to any
development that would cause land-disturbing activity subject to the
jurisdiction of the [State or local] Sedimentation Control Commission,
unless the commission has certified to the City, either that:
1.Â
An erosion control plan has been submitted to and approved by the
Commission, or
2.Â
The Commission has examined the preliminary plans for the development
and it reasonably appears that an erosion control plan can be approved
upon submission by the developer of more detailed construction or
design drawings. However, in this case construction of the development
may not begin (and no building permits may be issued) until the Commission
approves the erosion control plan.
B.Â
For
purposes of this Section, "land-disturbing activity" means any use of the land by any person in residential, industrial,
educational, institutional or commercial development and highway and
road construction and maintenance that results in a change in the
natural cover or topography and that may cause or contribute to sedimentation.
Sedimentation occurs whenever solid particulate matter, mineral or
organic, is transported by water, air, gravity or ice from the site
of its origin.