As used in this chapter, the following terms shall
have the meanings indicated:
ACCIDENTAL DISCHARGE
A discharge prohibited by this chapter, which occurs by chance,
and without planning or thought prior to occurrence.
BEST MANAGEMENT PRACTICES or BMPS
Proven or accepted physical, structural, vegetative, and/or
managerial practices that, when used singly or in combination, prevent
or reduce erosion, sediment, peak storm discharge, and pollution of
water, that have been approved by the Town of Derry, and that have
been incorporated by reference into the Stormwater Regulations as
if fully set out therein. (See Section 4 of the Stormwater Regulations for recommended best management practices manuals.)
CHANNEL
A natural or artificial watercourse with a definite bed and
banks that conducts flowing water continuously or periodically.
CONSTRUCTION ACTIVITY
Activities subject to the EPA Phase II Storm Water Program
and the NPDES general construction permits. These include construction
projects resulting in land disturbance. Such activities include but
are not limited to clearing and grubbing, grading, excavating, and
demolition.
CONTAMINANT
Any physical, chemical, biological, or radiological substance
or matter in water.
DIRECTOR OF PUBLIC WORKS
The chief administrator of the DPW who is authorized to assign
DPW staff to oversee the implementation and enforcement of the Stormwater
Regulations and the Town of Derry's Stormwater Ordinance.
DISCHARGE
To dispose, deposit, spill, pour, inject, seep, dump, leak
or place by any means, or that which is disposed, deposited, spilled,
poured, injected, seeped, dumped, leaked, or placed by any means,
including any direct or indirect entry of any solid or liquid matter
into the municipal separate storm sewer system.
ILLICIT DISCHARGE
Any discharge to the municipal storm sewer system (MS4) that
is not composed entirely of stormwater and not specifically permitted
through an existing NPDES discharge permit.
INDUSTRIAL ACTIVITY
Activities subject to NPDES industrial permits as defined
in 40 CFR, Section 122.26(b)(14).
LAND-DISTURBING ACTIVITY
Any activity on property that results in a change in the
existing soil cover (both vegetative and nonvegetative) and/or the
existing soil topography. Land-disturbing activities include, but
are not limited to, development, redevelopment, demolition, construction,
reconstruction, clearing, grading, filling, and excavation.
MAINTENANCE
Any activity that is necessary to keep a stormwater facility
in good working order so as to function as designed. Maintenance shall
include complete reconstruction of a stormwater facility if reconstruction
is needed in order to restore the facility to its original operational
design parameters. Maintenance shall also include the correction of
any problem on the site property that may directly impair the functions
of the stormwater facility.
MAINTENANCE AGREEMENT
A document duly executed and recorded in the Registry of
Deeds that acts as a property deed restriction and that provides for
long-term maintenance of stormwater management practices.
MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4)
The conveyances owned or operated by the municipality for
the collection and transportation of stormwater, including the roads
and streets and their drainage systems, catch basins, curbs, gutters,
ditches, man-made channels, pump stations, and storm drains.
NOTICE OF INTENT (NOI)
Application to apply for coverage under the EPA's general
permit for construction activities.
PERSON
Any and all persons, natural or artificial, including any
individual, firm or association and any municipal or private corporation
organized or existing under the laws of this or any other state or
country.
POLLUTANT
Anything which causes or contributes to pollution. Pollutants
may include, but are not limited to, paints, varnishes, and solvents;
petroleum hydrocarbons; automotive fluids; cooking grease; detergents
(biodegradable or otherwise); degreasers; cleaning chemicals; nonhazardous
liquid and solid wastes and yard wastes; refuse, rubbish, garbage,
litter, or other discarded or abandoned objects and accumulations,
so that same may cause or contribute to pollution; sediment; floatables;
pesticides, herbicides, and fertilizers; liquid and solid wastes;
sewage, fecal coliform and pathogens; dissolved and particulate metals;
animal wastes; wastes and residues that result from constructing a
building or structure; concrete and cement; and noxious or offensive
matter of any kind.
POLLUTION
The contamination or other alteration of any water's physical,
chemical or biological properties by the addition of any constituent
and includes, but is not limited to, a change in temperature, taste,
color, turbidity, or odor of such waters, or the discharge of any
liquid, gaseous, solid, radioactive, or other substance into any such
waters as will or is likely to create a nuisance or render such waters
harmful, detrimental or injurious to the public health, safety, welfare,
or environment, or to domestic, commercial, industrial, agricultural,
recreational, or other legitimate beneficial uses, or to livestock,
wild animals, birds, fish or other aquatic life.
PREMISES
Any building, lot, parcel of land, or portion of land, whether
improved or unimproved, including sidewalks and parking strips
RECHARGE
The amount of water from precipitation that infiltrates into
the ground and is not evaporated or transpired.
RUNOFF
That portion of the precipitation on a drainage area that
is discharged from the area into the municipal separate stormwater
system.
SEDIMENT
Solid material, both mineral and organic, that is in suspension,
is being transported, or has been moved from its site of origin by
air, water, gravity, or ice and has come to rest on the earth's surface
either above or below sea level.
STABILIZATION/STABILIZED
Providing adequate measures, vegetative and/or structural,
that will prevent erosion from occurring or reducing the soil erosion
rate such that it approaches that of undisturbed soils. Soils which
are disturbed will be considered stabilized and protected when covered
with a healthy, mature growth of grass or a good covering of straw
mulch (two tons per acre). Mulch is only a temporary measure; ultimately,
the site needs vegetation.
STORMWATER
Stormwater runoff, snowmelt runoff, surface runoff, street
wash waters related to street cleaning or maintenance, infiltration
and drainage.
STORMWATER MANAGEMENT
The programs to maintain quality and quantity of stormwater
runoff to predevelopment levels.
STORMWATER MANAGEMENT FACILITIES
The drainage structures, conduits, ditches, storm sewers,
and all device appurtenances by means of which stormwater is collected,
transported, pumped, treated or disposed.
STORMWATER MANAGEMENT PLAN
The set of drawings and other documents that comprise all
the information and specifications for the programs, drainage systems,
structures, BMPs, concepts and techniques intended to maintain or
restore quality and quantity of stormwater runoff to predevelopment
levels.
STORMWATER POLLUTION PREVENTION PLAN (SWPPP)
A plan that clearly describes appropriate control measures
that include a description of all pollution control measures (i.e.,
BMPs) that will be implemented as part of the construction activity
to control pollutants in stormwater discharges and describes the interim
and permanent stabilization practices for the site.
STORMWATER RUNOFF
Flow on the surface of the ground, resulting from precipitation
and drainage consisting entirely of water from any form of natural
precipitation that is not absorbed or evaporated, and resulting from
such precipitation.
STREAM
Areas of flowing water occurring for sufficient time to develop
and maintain defined channels but may not flow during dry portions
of the year; includes, but is not limited to, all perennial and intermittent
streams located on U.S. Geological Survey Maps.
STRUCTURAL BMPS
Devices that are constructed to provide control of stormwater
runoff.
STRUCTURAL STORMWATER CONTROL
A structural stormwater management facility or device that
controls stormwater runoff and changes the characteristics of that
runoff, including, but not limited to, the quantity and quality, the
period of release or the velocity of flow.
SURFACE WATER
Waters upon the surface of the earth in bounds created naturally
or artificially, including, but not limited to, streams, other watercourses,
lakes and reservoirs.