Definitions. Unless specifically defined below, words or phrases
shall be interpreted so as to give them the meaning they have in common
usage and to give this chapter the most effective application. The
word "shall" connotes mandatory and not discretionary; the word "may"
is permissive.
ADDITION
Any work on an existing structure that changes the external
dimensions of such structure.
ADJOINING PROPERTY
Any property facing a work site across any right-of-way,
street or highway shall be deemed "adjoining property," as well as
any property contiguous on any side.
BASE FLOOD
The flood having a one-percent chance of being equaled or
exceeded in any given year.
BEST MANAGEMENT PRACTICES (BMP)
Procedures and methods pertaining to construction activities
which are intended to minimize water pollution, retain valuable topsoil
and prevent erosion and sedimentation, and include, but are not limited
to, those practices contained in the Nassau County Best Management
Practices Manual Series.
BEST MANAGEMENT PRACTICES MANUALS
The most recent editions of a series of manuals published
by the County of Nassau and the State of New York, consisting of various
volumes on best management practices for certain described activities,
and specifically, the publications titled "Nassau County Best Management
Practices Manual for Erosion and Sediment Control, "New York Guidelines
for Urban Erosion and Sediment Control" and "Stormwater Management
Design Manual."
DETENTION
A practice to store stormwater runoff by collection as a
temporary pool of water and providing for its gradual (attenuated)
release over 24 hours or more; a practice which is used to control
peak discharge rates, and which provides gravity settling of pollutants.
DEVELOPMENT
To make a site or area available for use by physical alteration.
Development includes but is not limited to providing access to a site,
clearing of vegetation, grading, earth moving, providing utilities
and other services such as parking facilities, stormwater management
and erosion control systems, altering landforms, or construction of
a structure on the land.
EROSION
The removal of soil particles by the action of water, wind,
ice or other meteorological or geological agents.
EXFILTRATION
The downward movement of runoff through the bottom of an
infiltration system into the soil.
EXISTING GRADE
The vertical location of the existing ground surface prior
to excavation or filling.
FILL
Any act by which earth, sand, gravel, rock, or any other
material is deposited, placed, replaced, pushed, dumped, pulled, transported,
or moved by man to a new location and shall include the conditions
resulting therefrom.
FINAL GRADE
The vertical location of the ground or pavement surface after
the grading work is completed in accordance with the site development
plan.
FIRST FLUSH
The delivery of a disproportionately large load of pollutants
during the early part of storms due to rapid runoff of accumulated
pollutants. The first flush is defined as the runoff generated from
the first half-inch of runoff or runoff resulting from a one-year,
twenty-four-hour storm, whichever is greater, from land which has
been made more impervious from pre-development conditions through
land grading, a change in vegetative cover, or construction/development
activities.
FOREBAY
An extra storage area or treatment area, such as a sediment
pond or created wetland, near an inlet of a stormwater management
facility to trap incoming sediments or take up nutrients before they
reach a retention or extended detention pond.
GRADING
Excavation or fill or any combination thereof, and shall
include the conditions resulting from any excavation or fill.
IMPERVIOUS AREA
Impermeable surfaces, such as, but not limited to, pavement,
walks, patios, terraces, decks, rooftops, tennis courts and swimming
pools, which prevent the percolation of water into the soil.
INFILTRATION
A practice designed to promote the recharge of groundwater
by containment and concentration of stormwater into porous soils.
INFILTRATION BASIN
An impoundment made by excavation or embankment construction
to contain and exfiltrate runoff into the soil.
LAND-DISTURBING ACTIVITY
Any change to land which may result in soil erosion from
water or wind and the movement of soil into water or onto lands, alteration
of a drainage system, or increased runoff of waters, including, but
not limited to, clearing, grading, excavating, transporting and filling
of land.
MS4
Municipal separate storm sewer system.
MUNICIPAL PERMIT
Any permits or licenses issued by the Village of Malverne,
including, but not limited to, building, grading, demolition, clearing,
topsoil removal, excavation and tree removal permits, and subdivision,
special use permit and site plan approvals.
NPDES
National Pollutant Discharge Elimination System.
OUTFALL
The terminus of a storm drain where the contents are released.
PEAK FLOW
The maximum rate of flow of water at a given point and time
resulting from a storm event.
PEAK FLOW ATTENUATION
The reduction of the peak discharge of storm runoff by storage
and gradual release of that storage.
PERSON
Any corporation, partnership, association, trust, estate,
or any other entity, including state and local governments and agencies,
authorities, or other political subdivisions thereof, and one or more
individuals.
RETENTION
A practice designed to store stormwater runoff by collection
as a permanent pool or tank of water without release except by means
of evaporation, infiltration, or attenuated release when runoff volume
exceeds the permanent storage capacity of the permanent pool or tank.
RIP-RAP
A combination of large stone, cobbles and boulders used to
line channels, stabilize stream banks and reduce runoff velocities.
SOIL STABILIZATION
Measures which protect soil from the erosive forces of raindrop
impact and flowing water and include, but are not limited to, vegetative
establishment, mulching, and the early application of gravel base
on areas to be paved.
SPDES
State Pollutant Discharge Elimination System.
START OF CONSTRUCTION
The first land-disturbing activity associated with a development,
including land preparation such as clearing, grading and filling;
installation of utilities, streets and walkways; excavation for basements,
footings, piers, or foundations; erection of temporary forms; and
the installation of temporary or accessory buildings such as construction
sheds or trailers and garages.
STORMWATER APPURTENANCES
Structures such as dry wells, catch basins, piping, storm
drains and detention/retention basins designed to control and manage
the flow of stormwater.
STORMWATER CONVEYANCE SYSTEM
Collection or arrangement of varieties of stormwater appurtenances
to control and manage the flow of stormwater.
STORMWATER MANAGEMENT AND EROSION AND SEDIMENT CONTROL PLAN
Plans prepared by a professionally qualified person or persons
with expertise in stormwater management and erosion and sediment control,
such as a New York State licensed engineer or licensed landscape architect
or a certified professional in erosion and sediment control (CPESC).
These plans shall indicate the specific measures and sequencing to
be used in controlling erosion and sediment on a development site
during and after construction, showing the proposed use of the site
and showing the methods, techniques and improvements that will be
employed to control erosion and sedimentation, which shall employ
best management practices. The plan shall contain all surface water
calculations, unless set forth in an accompanying document.
STREAM CORRIDOR
The landscape features on both sides of a stream, including
soils, slope and vegetation, whose alteration can directly impact
the stream's physical characteristics and biological properties.
STRIPPING
Any activity that removes the vegetative surface cover, including
tree removal, clearing, and storage or removal of topsoil.
SWALE
A natural depression or a wide, shallow ditch used to temporarily
route or filter runoff.
TEMPORARY STREAM CROSSING
A temporary structural span installed across a flowing watercourse
for use by construction traffic. Structures may include bridges or
pipes.
WATERCOURSE
Any natural or artificial, intermittent, seasonal or permanent
and public or private water body or watercourse. A water body is intermittently,
seasonally or permanently inundated with water and contains a discernible
shoreline and includes ponds and lakes. A watercourse includes rivulets,
brooks, creeks, streams, rivers and other waterways flowing in a definite
channel with bed and banks and usually in a particular direction.