For the purpose of this article, certain terms used herein are defined
as follows:
AMMONIA NITROGEN
One of the oxidation states of nitrogen, in which nitrogen
is combined with hydrogen in molecular form as NH3 or in ionized form as NH4+. Quantitative
determination of ammonia nitrogen shall be made in accordance with
procedures set forth in Standard Methods.
APPROVING AUTHORITY
The Board of Commissioners of the Lawrence Utility District
or its duly authorized deputy, agent, or representative.
BIOCHEMICAL OXYGEN DEMAND (BOD5)
The quantity of oxygen utilized in the biochemical oxidation
of organic matter in five days at 20° C., expressed in milligrams
per liter. Quantitative determination of BOD5 shall be made in accordance with procedures set forth in Standard
Methods.
BUILDING DRAIN
That part of the lowest horizontal piping of a drainage system
which receives the discharge from soil, waste, and other drainage
pipes inside the walls of the building and conveys it to the building
sewer, beginning five feet (1.5 meters) outside the inner face of
the building wall.
BUILDING SEWER
The extension from the building drain to the public sewer
or other place of disposal, also called "house connection." Once constructed,
building sewer maintenance shall be the responsibility of the property
owner.
CHLORINE REQUIREMENT
The amount of chlorine, in milligrams per liter, which must
be added to wastewater to produce a specified residual chlorine content
in accordance with procedures set forth in Standard Methods.
COMBINED SEWER
Any sewer intended to serve as a sanitary sewer and a storm
sewer.
COMMERCIAL USER
Any user whose premises is used primarily for the conduct
of a profit-oriented enterprise in the fields of construction, wholesale
or retail trade, finance, insurance, real estate or services and who
discharges primarily normal domestic wastewater. This definition shall
also include multifamily residences having three or more units served
by a single service.
COMPATIBLE POLLUTANT
Biochemical oxygen demand, suspended solids, pH, or fecal
coliform bacteria, plus additional pollutants identified in the WPDES
permit for the publicly owned treatment works receiving the pollutants,
if such works was designed to treat such additional pollutants and
in part does remove such pollutants to a substantial degree.
EASEMENT
An acquired legal right for the specific use of land owned
by others.
FIXED CHARGE
The charge for the cost of debt retirement associated with
construction, erection, modification or rehabilitation of the wastewater
collection system. The charge shall be above the treatment, operation
and maintenance and replacement charges.
FLOATABLE OIL
Fat, oil, and grease (FOG) in a physical state such that
it will separate by gravity from wastewater by treatment in an approved
pretreatment facility. A wastewater shall be considered free of floatable
oil if it is properly pretreated and the wastewater does not interfere
with the collection system.
GARBAGE
The residue from the preparation, cooking, and dispensing
of food and from the handling, storage, and sale of food products
and produce.
GROUND GARBAGE
The residue from the preparation, cooking, and dispensing
of food that has been shredded to such a degree that all particles
will be carried freely in suspension under the flow conditions normally
prevailing in public sewers, with no particle greater than 1/2 inch
in any dimension.
INCOMPATIBLE POLLUTANT
Any pollutant which is not a compatible pollutant which will
adversely affect or disrupt the quality of wastewater treatment if
discharged to a wastewater treatment facility.
INDUSTRIAL USER
Any user whose premises is used primarily for the conduct
of a profit-oriented enterprise in the fields of manufacturing, transportation,
communications, or utilities, mining, agriculture, forestry, or fishing.
INDUSTRIAL WASTE
Any trade or process waste as distinct from segregated domestic
wastes or wastes from sanitary conveniences.
INTERCEPTOR SEWER
A sewer whose primary purpose is to convey wastewater from
a collection system or systems to a wastewater treatment facility.
Size of the sewer is not a factor.
MAJOR CONTRIBUTING INDUSTRY
An industrial or commercial facility that is a user of publicly
owned treatment works and:
(1)
Has a waste discharge flow of 50,000 gallons or more per average
workday;
(2)
Has a waste discharge flow greater than 5% of the flow carried
by the municipal system receiving the waste;
(3)
Has in its waste a toxic pollutant in toxic amounts as defined
in Chapter NR 215 of the Wisconsin Administrative Code; or
(4)
Has a waste which the approving authority determines has or,
in the case of a new source, will have a significant impact, either
singly or in combination with other wastes, on the publicly owned
treatment works or on the quality of effluent from such works.
NATURAL OUTLET
Any outlet, including storm sewers and combined sewer overflows,
into a watercourse, pond, ditch, lake, or other body of surface water
or groundwater.
NORMAL DOMESTIC WASTEWATER
Sanitary wastewater resulting from the range of normal domestic
activities, in which BOD5, SS, P or NH3 concentrations do not exceed normal concentrations
of:
(1)
A five-day, 20° C., BOD5 concentration
of not more than 250 milligrams per liter.
(2)
A suspended solids concentration of not more than 250 milligrams
per liter.
(3)
A phosphorus concentration of not more than 12 milligrams per
liter.
(4)
An ammonia nitrogen concentration of not more than 25 milligrams
per liter.
OPERATION AND MAINTENANCE (O&M) COSTS
Includes all costs associated with the operation and maintenance
of the wastewater collection system, as well as the costs associated
with periodic equipment replacement necessary for maintaining capacity
and performance of the wastewater collection system.
PARTS PER MILLION
A weight to weight ratio; the parts per million value multiplied
by the factor 8.34 shall be equivalent to pounds per million gallons
of water.
PERSON
Any and all persons, including any individual, firm, company,
municipal or private corporation, association, society, institution,
enterprise, governmental agency, or other entity.
pH
The logarithm (base 10) of the reciprocal of the hydrogen
ion concentration. The concentration is the weight of hydrogen ions,
in grams, per liter of solution. Neutral water, for example, has a
pH value of 7 and a hydrogen ion concentration of 10-7.
PHOSPHORUS (P)
Total phosphorus in wastewater, which may be present in any
of three principle forms: orthophosphates, polyphosphates, and organic
phosphates. Quantitative determination of total phosphorus should
be made in accordance with procedures set forth in Standard Methods.
PRETREATMENT
An arrangement of devices and structures for the preliminary
treatment or processing of wastewater required to render such wastes
acceptable for admission to the public sewers.
PUBLIC AUTHORITY
Any user whose premises is used for the conduct of the legislative,
judicial, administrative, or regulatory activities of federal, state,
local, or international units of government; government-owned educational
facilities; government-owned health facilities; or government-owned
recreational facilities. This does not include government-owned or
-operated business establishments.
REPLACEMENT COSTS
Expenditures for obtaining and installing equipment, accessories,
or appurtenances which are necessary during the service life of the
collection system to maintain its design capacity and performance
for which the system was designed and constructed. Operation and maintenance
costs include replacement costs.
RESIDENTIAL USER
Any user whose premises is used primarily as a domicile for
one or more persons and discharges only domestic wastes, but not including
dwellings classified as "commercial users."
SANITARY SEWER
A sewer that carries sanitary and industrial water-carried
wastes from residences, commercial buildings, industrial plants, and
institutions, together with minor quantities of groundwater, stormwater,
and surface water that are not admitted intentionally.
SEGREGATED DOMESTIC WASTES
Wastes from nonresidential sources resulting from normal
domestic activities. These activities are distinguished from industrial,
trade, and/or process discharge wastes.
SEWAGE
The spent water of a community. The preferred term is "wastewater."
SEWAGE SYSTEM
The composite network of underground conduits carrying wastewater
and appurtenances incidental thereto (i.e., manholes, lift stations,
and service lateral). This includes intercepting sewers and the sanitary
sewers.
SEWER
A pipe or conduit that carries wastewater or drainage water.
SEWER USER CHARGE
The charge levied on users of the wastewater collection system
for the user's proportional share of the capital-related expenses,
as well as operation and maintenance (including replacement) costs
of said facilities.
SLUG
Any discharge of water or wastewater which in concentration
of any given constituent or in quantity of flow exceeds for any period
of duration longer than 15 minutes more than five times the average
twenty-four-hour concentration or flows during normal operation and
shall adversely affect the system and/or performance of the wastewater
treatment works.
STANDARD METHODS
The examination and analytical procedures set forth in the
most recent edition of Standard Methods for the Examination of Water
and Wastewater, published jointly by the American Public Health Association,
the American Water Works Association, and the Water Environment Federation.
SUSPENDED SOLIDS (SS)
Solids that either float on the surface of or are in suspension
in water, wastewater, or other liquids and that are removable by laboratory
filtering as prescribed in Standard Methods and are referred to as
"nonfilterable residue."
UNMETERED USER
A user who is not connected to the municipal water system
and thereby does not have his private water supply metered.
UNPOLLUTED WATER
Water of quality equal to or better than the effluent criteria
in effect or water that would not cause violation of receiving water
quality standards and would not be benefited by discharge to the sanitary
sewers and wastewater treatment facilities provided.
USER CHARGE SYSTEM
That system which generates operation and maintenance (O&M)
and replacement revenues equitably for providing each user category
with services.
USER CLASSES
Categories of users having similar flows and water characteristics:
levels of biochemical oxygen demand, suspended solids, phosphorus,
ammonia nitrogen, etc. For the purpose of this article, there shall
be four user classes: residential, commercial, industrial, and public
authority.
WASTEWATER
The spent water of a community. From the standpoint of source,
it may be a combination of the liquid and water-carried wastes from
residences, commercial buildings, industrial plants, and institutions,
together with any groundwater, surface water, and stormwater that
may be present.
WASTEWATER FACILITIES
The treatment works defined in "wastewater treatment works"
exclusive of interceptor sewers and wastewater collection systems.
All wastewater treatment is provided by the Green Bay Metropolitan
Sewerage District and all references to treatment facilities refer
to those facilities owned and operated by the Green Bay Metropolitan
Sewerage District.
WASTEWATER TREATMENT WORKS
An arrangement of devices and structures for the storage,
treatment, recycling, and reclamation of wastewater, liquid industrial
wastes, and sludge. These systems include interceptor sewers, outfall
sewers, wastewater collection systems, individual systems, pumping,
power, and other equipment and their appurtenances; any works that
are an integral part of the treatment process or are used for ultimate
disposal of residues from such treatment; or any other method or system
for preventing, abating, reducing, storing, treating, separating,
or disposing of municipal or industrial wastes.
WATERCOURSE
A natural or artificial channel for the passage of water
either continuously or intermittently.
WPDES PERMIT
Wisconsin Pollutant Discharge Elimination System permit.
General provisions are stated in Chapter NR 205 of the Wisconsin Administrative
Code.