Unless the context specifically indicates otherwise,
the meaning of terms used in these rules and regulations shall be as follows:
BOD (denoting "biochemical oxygen demand")
The quantity of oxygen utilized in the biochemical oxidation of organic
matter under standard laboratory procedure in five days at 20º C., expressed
in milligrams per liter.
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 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.
GARBAGE
Solid wastes from the domestic and commercial preparation, cooking,
and dispensing of food and from the handling, storage, and sale of produce.
INDUSTRIAL WASTES
The liquid wastes from industrial manufacturing processes, trade,
or business as distinct from sanitary sewage.
NATURAL OUTLET
Any outlet into a watercourse, pond, ditch, lake or other body of
surface or ground water.
PERSON
Any individual, firm, company, association, society, corporation
or group.
pH
The logarithm of the reciprocal of the weight of hydrogen ions in
grams per liter of solution.
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 in any dimension.
PUBLIC SEWER
A sewer in which all owners of abutting properties have equal rights
and which is controlled by public authority.
SANITARY SEWER
A sewer which carries sewage and to which storm-, surface, and ground
waters are not intentionally admitted.
SEWAGE
A combination of the water-carried wastes from residences, business
buildings, institutions, and industrial establishments, together with such
ground-, surface, and storm waters as may be present.
SEWAGE WORKS
All facilities for collecting, pumping, treating, and disposing of
sewage.
SEWER
A pipe or conduit for carrying sewage.
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 or flows during normal operation.
SUPERINTENDENT
The Superintendent of Sewage Works and/or of Water Pollution Control
of the Town of Marblehead, 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.
WATERCOURSE
A channel in which a flow of water occurs, either continuously or
intermittently.