Definitions. Unless the context specifically indicates
otherwise, the meaning of terms used in this article shall be as follows:
BOD (denoting "biochemical oxygen demand")
The quantity of oxygen utilized in the biochemical oxidation
of organic matter in five days at 20° C., expressed in milligrams
per liter, as determined in accordance with the latest issue of APHA's
Standard Methods for the Examination of Water and Wastewater or by
a method acceptable to the Maryland Department of the Environment
and other agencies having jurisdiction.
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.
DEPARTMENT
The Department of Public Works of the Town of Manchester.
DIRECTOR
The Director of Public Works and Parks or the Director's
designee of the Town of Manchester.
FLOATABLE OIL
Oil, fat or grease 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 fat if
it is properly pretreated and the wastewater does not interfere with
the collection system.
GARBAGE
Solid wastes from the domestic and commercial preparation,
cooking and dispensing of food and from the handling, storage and
sale of produce.
HAZARDOUS WASTE
Any waste or combination of waste that poses substantial
danger to human beings, plants and animals. Specifically, a waste
shall be considered hazardous if it poses one or more of the following
characteristics: ignitability, corrosivity, reactivity, toxicity and
radioactivity.
INDUSTRIAL WASTES
Waterborne solids, liquids or gaseous wastes resulting from
discharged, permitted to flow or escaping from any industrial, manufacturing,
or food processing operation or processes or from the development
of any natural resource or any mixture of these with water or domestic
sewage as distinct from normal domestic sewage.
INTERFERENCE
An inhibition or disruption of the wastewater treatment works
or wastewater treatment plant operations or its processes or sludge
processes, use or disposal which causes either a violation of any
requirement of the wastewater treatment works' discharge permit or
damage to sewer systems and threats to wastewater treatment works'
workers and public health, safety and comfort.
NATURAL OUTLET
Any outlet into a watercourse, pond, ditch, lake or other
body of surface water or groundwater.
PARTS PER MILLION
A weight-to-weight ratio, in wastewater, parts per million
value multiplied by the factor of 8.345 shall be equivalent to pounds
per million gallons of water; or a weight-to-volume ratio, as one
milligram per liter is equal to one part per million in wastewater.
PERSON
Any individual, firm, company, association, society, public
or private corporation, the state or other entity whatsoever.
pH
The logarithm of the reciprocal of the hydrogen ions concentration
expressed in moles per liter. It shall be determined by one of the
procedures outlined in Standard Methods.
PLUMBING INSPECTOR
The duly designated Plumbing Inspector of the Town of Manchester,
Maryland, or Carroll County, Maryland, government.
POTW
Publicly owned treatment works.
PRETREATMENT
Treatment of wastewaters from sources before introduction
into the wastewater treatment works.
PROPERLY SHREDDED GARBAGE
The wastes from the preparation, cooking and dispensing of
food that have been shredded to such a degree that all particles will
be carried freely under the flow conditions normally prevailing in
public sewers, with no particle greater than 1/2 inch (1.27 centimeters)
in any dimension.
PUBLIC SEWER
A sewer in which all owners of abutting properties have equal
rights and which is controlled by public authority.
QUALIFIED ANALYST
Any person or independent laboratory who has demonstrated
competency in wastewater analysis by having analyzed satisfactorily
a minimum of three reference wastewater samples as supplied upon request
by the approving authority.
SANITARY SEWER
A sewer which carries sewage and to which stormwater, surface
water and groundwater are not intentionally admitted.
SEWAGE
A combination of water-carried wastes from residences, business
buildings, institutions and industrial establishments, together with
such groundwater, surface water and stormwater as may be present.
SEWAGE WORKS
All facilities for collecting, pumping, treating and disposing
of sewage.
SEWER
A pipe or conduit for carrying sewage.
SLUDGE
Solid or semisolid materials removed from the liquid wastewater
stream or wastewater treatment plant.
SLUG
Any discharge of water, sewage or industrial waste 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 of flows during normal
operation.
STANDARD METHODS
The examination and analytical procedures set forth in the
latest edition of Standard Methods for the Examination of Water and
Wastewater.
SUPERINTENDENT
The Director of Public Works and Parks of the Town of Manchester
or his authorized deputy, agent or representative.
SUSPENDED SOLIDS
Solids that either float on the surface of or are in suspension
in water, sewage or other liquids and which are removable by laboratory
filtering.
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 structure, equipment and processes required to collect,
carry away and treat domestic and industrial wastes and discharge
the effluent and treat, utilize or dispose of sludges resulting from
collection and treatment of these wastes.
WATERCOURSE
A channel in which a flow of water occurs, either continuously
or intermittently.