Definitions. For the purposes of this §
60-325, the following definitions shall apply:
ALTERATION
Any activity, that will change the ability of a ground surface
area to absorb water or will change existing surface drainage patterns.
Examples include, without limitation, construction of new structures,
earthmoving, paving, and modification of existing vegetation.
BEST MANAGEMENT PRACTICES (BMPs)
Structural, non-structural, and managerial techniques that
are recognized to be the most effective and practical means to prevent
or minimize increases in stormwater volumes and flows, reduce point-source
and nonpoint-source pollution, and promote stormwater quality and
protection of the environment.
CLEAN WATER ACT
The Federal Water Pollution Control Act (33 U.S.C. §§ 1251
et seq.) as it may hereafter be amended.
CONSTRUCTION AND WASTE MATERIALS
Excess or discarded building or site materials that may adversely
impact water quality, including without limitation concrete truck
"washout," chemicals, litter, and sanitary waste at a construction
site.
CONSTRUCTION SITE
Any site where activity is proposed or occurs that involves
the alteration of more than 2,500 square feet of land.
HAZARDOUS MATERIAL
Any material that, because of its quantity, concentration,
chemical, corrosive, flammable, reactive, toxic, infectious or radioactive
characteristics, either separately or in combination with any substance
or substances, constitutes a present or potential threat to human
health, safety, welfare, or to the environment. Hazardous materials
include any synthetic organic chemical, petroleum product, heavy metal,
radioactive or infectious material, acid and alkali, and any substance
defined as Toxic or Hazardous under M.G.L. c. 21C and c. 21E, or the
regulations at 310 CMR 30.000 or 310 CMR 40.0000.
ILLICIT CONNECTION
A surface or subsurface drain or conveyance that allows an Illicit Discharge into the MS4, including any connection from an indoor drain, sinks, toilet, or laundry facility, regardless of whether the connection was previously allowed, permitted, or approved before the effective date of this §
60-325.
ILLICIT DISCHARGE
Any direct or indirect discharge to the MS4 or the Waters of the Commonwealth that is not composed entirely of stormwater, including, without limitation, any discharge of a pollutant, sewage, process wastewater, or wash water, except as exempted in Subsection
E(3). The term does not include a discharge in compliance with an NPDES Stormwater Discharge Permit or a Surface Water Discharge Permit.
IMPERVIOUS SURFACE
Any material or structure on, above or below the ground that
prevents water from infiltrating through to the underlying soil. Impervious
surfaces may include, without limitation: paved surfaces, parking
lots, sidewalks, driveways, roof tops, and swimming pools.
LOW IMPACT DEVELOPMENT or LID
Site planning and design strategies that use or mimic natural
processes that result in the infiltration, evapotranspiration, or
use of stormwater in order to protect water quality and associated
aquatic habitat. LID employs principles to create functional and appealing
site drainage that treat stormwater as a resource rather than a waste
product, such as preserving and recreating natural landscape features
and minimizing effective imperviousness. LID practices include without
limitation bioretention facilities, rain gardens, vegetated rooftops,
rain barrels, and permeable pavements.
MS4 (MUNICIPAL SEPARATE STORM SEWER SYSTEM)
The system of conveyances, owned or operated by the Town
of Belmont, that is designed or used for collecting or conveying stormwater,
including any road with a drainage system, street, gutter, curb, inlet,
piped storm drain, pumping facility, retention or detention basin,
natural or man-made or altered drainage channel, swale, culvert, channel,
catch basin, outfall, outlet, reservoir, or other drainage structure.
NEW DEVELOPMENT
Any Alteration creating any impervious cover that occurs
on a lot or parcel that has not previously been developed.
OCD
Town of Belmont Office of Community Development.
OPERATION AND MAINTENANCE PLAN
A plan setting the functional, financial and organizational
mechanisms for the ongoing operation and maintenance of a stormwater
management system to ensure that it continues to function as designed.
PERSON
An individual, partnership, association, firm, company, trust,
corporation, agency, authority, department or political subdivision
of the Commonwealth of Massachusetts or the federal government, to
the extent permitted by law, and any officer, employee, or agent of
such person.
POINT SOURCE
Any discernible, confined and discrete conveyance, including,
without limitation, any pipe, ditch, channel, tunnel, conduit, well,
discrete fissure, container, rolling stock, concentrated animal feeding
operation, or vessel or other floating craft, from which pollutants
are or may be discharged. The term does not include agricultural stormwater
discharges and return flows from irrigated agriculture.
POLLUTANT
Any element or characteristic of sewage, agricultural, industrial,
or commercial waste, runoff, leachate, heated effluent, or other matter
whether originating at a point or nonpoint source, that is or may
be introduced into Belmont's MS4 or waters of the Commonwealth. Pollutants
shall include, but are not limited to:
(1)
Paints, varnishes, and solvents;
(2)
Oil and other automotive fluids;
(3)
Non-hazardous liquid and solid wastes and yard wastes;
(4)
Refuse, rubbish, garbage, litter, or other discarded or abandoned
objects, ordnances, accumulations and floatables;
(5)
Excess Pesticides, herbicides, and fertilizers;
(6)
Hazardous materials and wastes;
(7)
Sewage, fecal coliform and pathogens;
(8)
Dissolved and particulate metals;
(10)
Rock, sand, salt, silt, soils;
(11)
Construction wastes and residues; and
(12)
Noxious or offensive matter of any kind.
RECHARGE
The process by which groundwater is replenished by precipitation.
REDEVELOPMENT
Development, rehabilitation, expansion, demolition, construction,
land alteration, or phased projects that disturb the ground surface,
including impervious surfaces, on previously developed sites.
RUNOFF
The water from rain, snowmelt, or irrigation that flows over
the land surface and is not absorbed into the ground, instead flowing
into the MS4 or streams or other surface waters or land depressions.
SANITARY SEWER SYSTEM
A separate underground conveyance system specifically for
transporting sanitary waste operated separately and independently
from the MS4, to which storm, surface, and ground waters are not lawfully
admitted.
STORMWATER
Stormwater runoff, snowmelt runoff, and surface water runoff
and drainage.
STORMWATER MANAGEMENT
The use of structural or non-structural practices that are
designed to reduce and control stormwater runoff pollutant loads,
discharge volumes or peak flow discharge rates. Stormwater Management
includes the use of Low- Impact Development (LID) management practices.
STORMWATER MANAGEMENT AND EROSION CONTROL PERMIT
A permit issued by the Town of Belmont Office of Community
Development, approving a system that is designed to protect the environment
of the Town from the deleterious effects of uncontrolled and untreated
stormwater runoff.
STORMWATER MANAGEMENT STANDARDS
The Stormwater Management Standards and accompanying Stormwater
Handbook(s) issued by the Massachusetts Department of Environmental
Protection or any successor agency, as such Standards and Handbooks
may be hereafter superseded or amended.
SUBSTANTIAL DEMOLITION
The demolition of at least 50% of an existing principal structure,
measured by the area of the footprint of the structure on the lot.
TOTAL MAXIMUM DAILY LOAD or TMDL
Section 303(d) of the Clean Water Act authorizes the EPA
to assist states, territories, and authorized tribes in listing impaired
waters and developing a Total Maximum Daily Load ("TMDL") for each
of these waterbodies. A TMDL establishes the maximum amount of a pollutant
that a waterbody can accept and still meet water quality standards
for protecting public health and maintaining the designated beneficial
uses of those waters for drinking, swimming, recreation, and fishing.
A TMDL includes Waste Load Allocations for point source discharges,
Load Allocations for nonpoint sources, and natural background and
must include a margin of safety and account for seasonal variations.
VEGETATION
Trees, shrubs, bushes, and ground cover, including grass.
WATERS OF THE COMMONWEALTH
All waters within the jurisdiction of the Commonwealth, including,
without limitation, rivers, streams, lakes, ponds, springs, impoundments,
estuaries, wetlands, coastal waters, and groundwater.