Grease, oil and sand interceptors shall be provided
when, in the opinion of the Commissioners, they are necessary for
the proper handling of liquid wastes containing grease in excessive
amounts or any flammable wastes, sand or other harmful ingredients;
except that such interceptors shall not be required for private living
quarters or dwelling units. All interceptors shall be of a type and
capacity approved by the Commissioners, and shall be located as to
be readily and easily accessible for cleaning and inspection.
Where preliminary treatment or flow-equalizing
facilities are provided for any waters or wastes, they shall be maintained
continuously in satisfactory and effective operation by the owner
at his expense.
When required by the Commissioners, the owner
of any property serviced by a building sewer carrying industrial wastes
shall install a suitable control manhole together with such necessary
meters and other appurtenances in the building sewer to facilitate
observation, sampling and measurement of the wastes. Such manhole,
when required, shall be accessibly and safely located and shall be
constructed in accordance with plans approved by the Commissioners.
The manhole shall be installed by the owner at his expense and shall
be maintained by him so as to be safe and accessible at all times.
All measurements, tests and analyses of the
characteristics of waters and wastes to which reference is made in
this regulation shall be determined in accordance with the latest
edition of Standard Methods for the Examination of Water and Wastewater,
published by the American Public Health Association, and shall be
determined at the control manhole provided or upon suitable samples
taken at said control manhole. In the event that no special manhole
has been required, the control manhole shall be considered to be the
nearest downstream manhole in the public sewer to the point at which
the building sewer is connected. Sampling shall be carried out by
customarily accepted methods to reflect the effect of constituents
upon the sewage works and to determine the existence of hazards to
life, limb and property. (The particular analyses involved will determine
whether a twenty-four-hour composite of all outfalls of a premises
is appropriate or whether a grab sample or samples should be taken.
Normally, but not always, BOD and suspended solids analyses are obtained
from twenty-four-hour composites of all outfalls whereas pH's are
determined from periodic grab samples.) All industries discharging
into a public sewer shall perform such monitoring of their discharges
as the Board of Sewer Commissioners and/or other duly authorized employees
of the Town may reasonably require, including installation, use and
maintenance of monitoring equipment, keeping records and reporting
the results of such monitoring to the Board of Sewer Commissioners.
Such records shall be made available upon request by the Board of
Sewer Commissioners to other agencies having jurisdiction over discharges
to the receiving waters.
No statement contained in this article shall
be construed as preventing any special agreement or arrangement between
the Town and any industrial concern whereby an industrial waste of
unusual strength or character may be accepted by the Town for treatment,
subject to payment therefor, by the industrial concern.