For the purposes of this Subtitle, the following definitions shall
apply:
ACCESSORY STRUCTURE
A building or structure on the same lot with, and of a nature
customarily incidental and subordinate to, the principal structure.
For the purposes of these regulations, an accessory structure shall
be used solely for parking of vehicles and limited storage.
AGREEMENT TO SUBMIT AN ELEVATION CERTIFICATE
A form on which the applicant for a permit to construct a
building or structure, to construct certain horizontal additions,
to place or replace a manufactured home, or to substantially improve
a building, structure, or manufactured home agrees to have an elevation
certificate prepared by a licensed professional engineer or licensed
professional surveyor, as specified by the Floodplain Administrator,
and to submit the certificate:
(1)
Upon placement of the lowest floor and prior to the further
vertical construction; and
(2)
Prior to the final inspection and issuance of the certificate
of occupancy.
ALTERATION OF A WATERCOURSE
For the purpose of these regulations, alteration of a watercourse
includes, but is not limited to, widening, deepening or relocating
the channel, including excavation or filling of the channel. Alteration
of a watercourse does not include construction of a road, bridge,
culvert, dam, or in-stream pond unless the channel is proposed to
be realigned or relocated as part of such construction.
AREA OF SHALLOW FLOODING
A designated Zone AO on the Flood Insurance Rate Map with
a one-percent annual chance or greater of flooding to an average depth
of one to three feet where a clearly defined channel does not exist,
where the path of flooding is unpredictable, and where velocity flow
may be evident; such flooding is characterized by ponding or sheet
flow.
BASE BUILDING
The building to which an addition is being added. This term
is used in provisions relating to additions.
BASE FLOOD
The flood having a one-percent chance of being equaled or
exceeded in any given year; the base flood also is referred to as
the one-percent annual chance one-hundred-year flood.
BASE FLOOD ELEVATION
The water surface elevation of the base flood in relation
to the datum specified on the community's Flood Insurance Rate Map.
In areas of shallow flooding, the base flood elevation is the highest
adjacent natural grade elevation plus the depth number specified in
feet on the Flood Insurance Rate Map, or at least four feet if the
depth number is not specified.
BASEMENT
Any area of the building having its floor subgrade (below
ground level) on all sides.
BUILDING CODE(S)
The effective Maryland Building Performance Standards (COMAR
05.02.07, as from time to time amended), including the building code,
residential code, and existing building code.
COASTAL A ZONE
An area within a special flood hazard area, landward of a
coastal high-hazard area (V Zone) or landward of a shoreline without
a mapped coastal high-hazard area, in which the principal source(s)
of flooding are astronomical tides and storm surges and in which,
during base flood conditions, the potential exists for breaking waves
with heights greater than or equal to one-and-one-half feet. The inland
limit of the Coastal A Zone may be delineated on the Flood Insurance
Rate Maps as the limit of moderate wave action (LiMWA).
COASTAL HIGH-HAZARD AREA
An area of special flood hazard extending from offshore to
the inland limit of a primary frontal dune along an open coast and
any other area subject to high-velocity wave action from storms. Coastal
high-hazard areas also are referred to as "V Zones" and are designated
on the Flood Insurance Rate Maps as Zones VE or V1-30.
COMMUNITY
A political subdivision of the State of Maryland (county,
city or town) that has authority to adopt and enforce floodplain management
regulations within its jurisdictional boundaries.
CRITICAL AND ESSENTIAL FACILITIES
Buildings and other structures that are intended to remain
operational in the event of extreme environmental loading from flood,
wind, snow or earthquakes. Critical and essential facilities typically
include hospitals, fire stations, police stations, storage of critical
records, facilities that handle or store hazardous materials, and
similar facilities.
DECLARATION OF LAND RESTRICTION (NON-CONVERSION AGREEMENT)
A form signed by the owner agreeing not to convert or modify
in any manner that is inconsistent with the terms of the permit and
these regulations certain enclosures below the lowest floor of elevated
buildings and certain accessory structures. The form requires the
owner to record it on the property deed to inform future owners of
the restrictions.
DEVELOPMENT
Any man-made change to improved or unimproved real estate,
including but not limited to buildings or other structures, placement
of manufactured homes, mining, dredging, filling, grading, paving,
excavation or drilling operations, or storage of equipment or materials.
ELEVATION CERTIFICATE
A Federal Emergency Management Agency form on which surveyed
elevations and other data pertinent to a property and a building are
identified and which shall be completed by a licensed professional
land surveyor or a licensed professional engineer, as specified by
the Floodplain Administrator. When used to document the height above
grade of buildings in special flood hazard areas for which base flood
elevation data are not available, the elevation certificate shall
be completed in accordance with the instructions issued by the Federal
Emergency Management Agency.
ENCLOSURE BELOW THE LOWEST FLOOR
An unfinished or flood-resistant enclosure that is located
below an elevated building, is surrounded by walls on all sides, and
is usable solely for parking of vehicles, building access or storage,
in an area other than a basement area, provided that such enclosure
is built in accordance with the applicable design requirements specified
in these regulations. Also see "lowest floor."
FLOOD-DAMAGE-RESISTANT MATERIALS
Any construction material that is capable of withstanding
direct and prolonged contact with floodwaters without sustaining any
damage that requires more than cosmetic repair.
FLOOD INSURANCE RATE MAP (FIRM)
An official map on which the Federal Emergency Management
Agency has delineated special flood hazard areas to indicate the magnitude
and nature of flood hazards, to designate applicable flood zones,
and to delineate floodways, if applicable. Flood Insurance Rate Maps
that have been prepared in digital format or converted to digital
format are referred to as "Digital Flood Insurance Rate Maps (DFIRM)."
FLOOD INSURANCE STUDY (FIS)
The official report in which the Federal Emergency Management
Agency has provided flood profiles, floodway information, and the
water surface elevations.
FLOOD OPENING
A flood opening (non-engineered) is an opening that is used
to meet the prescriptive requirement of one square inch of net open
area for every square foot of enclosed area. An engineered flood opening
is an opening that is designed and certified by a licensed professional
engineer or licensed architect as meeting certain performance characteristics,
including providing automatic entry and exit of floodwaters; this
certification requirement may be satisfied by an individual certification
for a specific structure or issuance of an Evaluation Report by the
International Code Council Evaluation Service, LLC (ICC-ES).
FLOOD or FLOODING
A general and temporary condition of partial or complete
inundation of normally dry land areas from:
(1)
The overflow of inland or tidal waters; and/or
(2)
The unusual and rapid accumulation or runoff of surface waters
from any source.
FLOODPLAIN
Any land area susceptible to being inundated by water from
any source (see definition of "flood" or "flooding").
FLOODPROOFING or FLOODPROOFED
Any combination of structural and non-structural additions,
changes, or adjustments to buildings or structures which reduce or
eliminate flood damage to real estate or improved real property, water
and sanitary facilities, structures and their contents, such that
the buildings or structures are 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.
FLOODPROOFING CERTIFICATE
The Federal Emergency Management Agency form that is to be
completed, signed and sealed by a licensed professional engineer or
licensed architect to certify that the design of floodproofing and
proposed methods of construction are in accordance with the applicable
requirements of § BR 2-305(e)(2) of these regulations.
FLOOD PROTECTION SETBACK
A distance measured perpendicular to the top of bank of a
watercourse that delineates an area to be left undisturbed to minimize
future flood damage and to recognize the potential for bank erosion.
Along non-tidal waters of the state, the flood protection setback
is:
(1)
One hundred feet, if the watercourse has special flood hazard
areas shown on the Flood Insurance Rate Map, except where the setback
extends beyond the boundary of the flood hazard area; or
(2)
Fifty feet, if the watercourse does not have special flood hazard
areas shown on the Flood Insurance Rate Map.
FLOODWAY
The channel of a river or other watercourse and the adjacent
land areas that must be reserved in order to pass the base flood discharge
such that the cumulative increase in the water surface elevation of
the base flood discharge is no more than a designated height. When
shown on a Flood Insurance Rate Map, the floodway is referred to as
the "designated floodway."
FLOOD ZONE
A designation for areas that are shown on Flood Insurance
Rate Maps. These designations include the following:
(1)
Zone A: Special flood hazard areas subject to inundation by
the one-percent annual chance (one-hundred-year) flood; base flood
elevations are not determined.
(2)
Zone AE and Zone A1-30: Special flood hazard areas subject to
inundation by the one-percent annual chance (one-hundred-year) flood;
base flood elevations are determined; floodways may or may not be
determined. In areas subject to tidal flooding, the limit of moderate
wave action may or may not be delineated.
(3)
Zone AH and Zone AO: Areas of shallow flooding, with flood depths
of one to three feet (usually areas of ponding or sheet flow on sloping
terrain), with or without base flood elevations or designated flood
depths.
(4)
Zone B and Zone X (shaded): Areas subject to inundation by the
two-tenths-percent annual chance (five-hundred-year) flood; areas
subject to the one-percent annual chance (one-hundred-year) flood
with average depths of less than one foot or with contributing drainage
area less than one square mile; and areas protected from the base
flood by levees.
(5)
Zone VE and Zone V1-30: Special flood hazard areas subject to
inundation by the one-percent annual chance (one-hundred-year) flood
and subject to high-velocity wave action (also see "coastal high-hazard
area").
FREE-OF-OBSTRUCTION
A term that describes open foundations (pilings, columns,
or piers) without attached elements or foundation components that
would obstruct the free passage of floodwaters and waves beneath structures
that are elevated on such foundations.
FUNCTIONALLY DEPENDENT USE
A use which cannot perform its intended purpose unless it
is located or carried out in close proximity to water; the term includes
only docking facilities, port facilities that are necessary for the
loading and unloading of cargo or passengers, and ship building and
ship repair facilities, but does not include long-term storage or
related manufacturing facilities.
HIGHEST ADJACENT GRADE
The highest natural elevation of the ground surface, prior
to construction, next to the proposed foundation of a structure.
HISTORIC STRUCTURE
Any structure that is:
(1)
Individually listed in the National Register of Historic Places
(a listing maintained by the United States Department of the Interior)
or preliminarily determined by the Secretary of the Interior as meeting
the requirements for individual listings on the National Register;
(2)
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; or
(3)
Individually listed on the Maryland Register of Historic Places.
HYDROLOGIC AND HYDRAULIC ENGINEERING ANALYSES
Analyses performed by a licensed professional engineer, in
accordance with standard engineering practices that are accepted by
the Maryland Department of the Environment (Nontidal Wetlands and
Waterways) and the Federal Emergency Management Agency, used to determine
the base flood, other frequency floods, flood elevations, floodway
information and boundaries, and flood profiles.
LETTER OF MAP CHANGE (LOMC)
A Letter of Map Change is an official Federal Emergency Management
Agency determination, by letter, that amends or revises an effective
Flood Insurance Rate Map or Flood Insurance Study. Letters of Map
Change include:
(1)
LETTER OF MAP AMENDMENT (LOMA)An amendment based on technical data showing that a property was incorrectly included in a designated special flood hazard area. A Letter of Map Amendment amends the current effective Flood Insurance Rate Map and establishes that a specific property or structure is not located in a special flood hazard area.
(2)
LETTER OF MAP REVISION (LOMR)A revision based on technical data that may show changes to flood zones, flood elevations, floodplain and floodway delineations, and planimetric features. A Letter of Map Revision Based on Fill (LOMR-F) is a determination that a structure or parcel of land has been elevated by fill above the base flood elevation and is, therefore, no longer exposed to flooding associated with the base flood. In order to qualify for this determination, the fill must have been permitted and placed in accordance with the community's floodplain management regulations.
(3)
CONDITIONAL LETTER OF MAP REVISION (CLOMR)A formal review and comment as to whether a proposed flood protection project or other project complies with the minimum National Flood Insurance Program requirements for such projects with respect to delineation of special flood hazard areas. A Conditional Letter of Map Revision Based on Fill (CLOMR-F) is a determination that a parcel of land or proposed structure that will be elevated would not be inundated by the base flood if fill is placed on the parcel as proposed or the structure is built as proposed. A Conditional Letter of Map Revision does not revise the effective Flood Insurance Rate Map or Flood Insurance Study; upon submission and approval of certified as-built documentation, a Letter of Map Revision may be issued by the Federal Emergency Management Agency, to revise the effective Flood Insurance Rate Map.
LICENSED
As used in these regulations, licensed refers to professionals
who are authorized to practice in the State of Maryland by issuance
of licenses by the Maryland Board of Architects, Maryland Board of
Professional Engineers, Maryland Board of Professional Land Surveyors,
and the Maryland Real Estate Appraisers and Home Inspectors Commission.
LIMIT OF MODERATE WAVE ACTION (LIMWA)
Inland limit of the area affected by waves greater than one-and-one-half
feet during the base flood. Base flood conditions between the VE Zone
and the limit of moderate wave action will be similar to but less
severe than those in the VE Zone.
LOWEST FLOOR
The lowest floor of the lowest enclosed area (including basement)
of a building or structure; the floor of an enclosure below the lowest
floor is not the lowest floor, provided that the enclosure is constructed
in accordance with these regulations. The lowest floor of a manufactured
home is the bottom of the lowest horizontal supporting member (longitudinal
chassis frame beam).
MANUFACTURED HOME
A structure, transportable in one or more sections, which
is built on a permanent chassis and is designed for use with or without
a permanent foundation when connected to the required utilities. The
term "manufactured home" does not include a recreational vehicle.
MARKET VALUE
The price at which a property will change hands between a
willing buyer and a willing seller, neither party being under compulsion
to buy or sell and both having reasonable knowledge of relevant facts.
For the purposes of these regulations, the market value of a building
is determined by a licensed real estate appraiser or the most recent,
full phased-in assessment value of the building (improvement) determined
by the Maryland Department of Assessments and Taxation.
MARYLAND DEPARTMENT OF THE ENVIRONMENT (MDE)
A principal department of the State of Maryland that is charged
with, among other responsibilities, the coordination of the National
Flood Insurance Program in Maryland (National Flood Insurance Program
State Coordinator) and the administration of regulatory programs for
development and construction that occur within the waters of the state,
including non-tidal wetlands, non-tidal waters and floodplains, and
state and private tidal wetlands (tidal wetlands). Unless otherwise
specified, Maryland Department of the Environment refers to the Department's
Wetlands and Waterways Program.
MIXED USE STRUCTURE
Any structure that is used or intended for use for a mixture
of non-residential and residential uses in the same structure.
NATIONAL FLOOD INSURANCE PROGRAM (NFIP)
The program authorized by the United States Congress in 42
U.S.C. §§ 4001 through 4129, as from time to time amended.
The National Flood Insurance Program makes flood insurance coverage
available in communities that agree to adopt and enforce minimum regulatory
requirements for development in areas prone to flooding (see definition
of "special flood hazard area").
NEW CONSTRUCTION
Structures, including additions and improvements, and the
placement of manufactured homes, for which the start of construction
commenced on or after February 15, 1979, the initial effective date
of the Worcester County Flood Insurance Rate Map, including any subsequent
improvements, alterations, modifications, and additions to such structures.
NON-TIDAL WATERS OF THE STATE
See "waters of the state." As used in these regulations,
"non-tidal waters of the State" refers to any stream or body of water
within the state that is subject to state regulation, including the
"one-hundred-year frequency floodplain of free-flowing waters." COMAR
26.17.04, as from time to time amended, states that "the landward
boundaries of any tidal waters shall be deemed coterminous with the
wetlands boundary maps adopted pursuant to Environmental Article,
§ 16-301, Annotated Code of Maryland." Therefore, the boundary
between the tidal and non-tidal waters of the state is the tidal wetlands
boundary.
PERSON
An individual or group of individuals, corporation, partnership,
association, or any other entity, including state and local governments
and agencies.
RECREATIONAL VEHICLE
A vehicle that is built on a single chassis, four hundred
square feet or less when measured at the largest horizontal projection,
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 a temporary living quarters for recreational, camping, travel,
or seasonal use.
SPECIAL FLOOD HAZARD AREA (SFHA)
The land in the floodplain subject to a one-percent or greater
chance of flooding in any given year. Special flood hazard areas are
designated by the Federal Emergency Management Agency in Flood Insurance
Studies and on Flood Insurance Rate Maps as Zones A, AE, AH, AO, A1-30,
and A99, and Zones VE and V1-30. The term includes areas shown on
other flood maps that are identified in § BR 2-301(e).
START OF CONSTRUCTION
The date the building permit was issued, provided that the
actual start of construction, repair, reconstruction, rehabilitation,
addition placement, or other improvement was within one hundred eighty
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 slab or footings, the installation of piles, the construction of
columns, or 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, the excavation for a
basement, footings, piers, or foundations, or the erection of temporary
forms, or the 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 substantial improvements, 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.
STRUCTURE
That which is built or constructed; specifically, a walled
and roofed building, including a gas or liquid storage tank that is
principally above ground, as well as a manufactured home.
SUBSTANTIAL DAMAGE
Damage of any origin sustained by a building or structure
whereby the cost of restoring the building or structure to its before-damaged
condition would equal or exceed fifty percent of the market value
of the building or structure before the damage occurred. Also used
as "substantially damaged" structure.
SUBSTANTIAL IMPROVEMENT
Any reconstruction, rehabilitation, addition, or other improvement
of a building or structure, the cost of which equals or exceeds fifty
percent of the market value of the building or structure before the
start of construction of the improvement. The term includes structures
which have incurred substantial damage, regardless of the actual repair
work performed. The term does not, however, include either:
(1)
Any project for improvement of a building or structure to correct
existing violations of state or local health, sanitary or safety code
specifications which have been identified by the local code enforcement
official prior to submission of an application for a permit and which
are the minimum necessary to assure safe living conditions; or
(2)
Any alteration of an historic structure, provided that the alteration
will not preclude the structure's continued designation as an historic
structure.
TEMPORARY STRUCTURE
A structure installed, used or erected for a period of less
than one hundred eighty days.
VARIANCE
A grant of relief from the strict application of one or more
requirements of these regulations.
VIOLATION
Any construction or development in a special flood hazard
area that is being performed without an issued permit. The failure
of a building, structure, or other development for which a permit
is issued to be fully compliant with these regulations and the conditions
of the issued permit. A building, structure, or other development
without the required design certification, the elevation certificate,
or other evidence of compliance required is presumed to be a violation
until such time as the required documentation is provided.
WATERCOURSE
The channel, including channel banks and bed, of non-tidal
waters of the state.
WATERS OF THE STATE
(See Environment Title, Title 5, Subtitle 1, Annotated Code
of Maryland, as from time to time amended.) Waters of the state include:
(1)
Both surface and underground waters within the boundaries of
the state subject to its jurisdiction;
(2)
That portion of the Atlantic Ocean within the boundaries of
the state;
(3)
The Chesapeake Bay and its tributaries;
(4)
All ponds, lakes, rivers, streams, public ditches, tax ditches,
and public drainage systems within the state, other than those designed
and used to collect, convey, or dispose of sanitary sewage; and
(5)
The floodplain of free-flowing waters determined by the Maryland
Department of the Environment on the basis of the one-hundred-year
flood frequency.