[Ord. No. 595, A V, § 1, 5-11-1982]
No person shall discharge or cause to be discharged any unpolluted
waters such as stormwater, surface water, groundwater, roof runoff,
subsurface drainage, or cooling water to any building drain or sewer
which in turn is connected directly or indirectly to the sanitary
sewer unless such connection is approved by the city commission and
the North Dakota State Department of Health.
[Ord. No. 595, A V, § 2, 5-11-1982]
Stormwater other than that exempted under Section 17-46 and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as combined sewers or storm sewers, or to a natural outlet approved by the city commission and the North Dakota State Department of Health.
[Ord. No. 595, AV, § 3, 5-11-1982]
No person shall discharge or cause to be discharged any of the
following described water or wastes to any public sewers:
(a)
Any gasoline, benzene, naptha, fuel oil, or other flammable or explosive
liquid, solid or gas.
(b)
Any waters containing toxic or poisonous solids, liquids, or gases
in sufficient quantity, either singly or by interaction with other
wastes, to contaminate the sludge of any municipal system, to injure
or interfere with any sewage treatment process, constitute a hazard
to human or animals, create a public nuisance, or create any hazard
in or have an adverse effect on the waters receiving any discharges
from the treatment works.
(c)
Any waters or wastes having a pH lower than 5.5 or having any other
corrosive property capable of causing damage or hazard to structures,
equipment, and personnel of the wastewaterworks.
(d)
Solid or viscous substances in quantities or of such size capable
of causing obstruction to the flow in sewers, or other interference
with the proper operation of the wastewater facilities, such as, but
not limited to, ashes, cinders, sand, mud, straw, shavings, metal,
glass, rags, feathers, tar, plastics, wood, unground garbage, whole
blood, paunch manure, hair and fleshings, entrails and paper dishes,
cups, milk containers, etc., either whole or ground by garbage grinders.
[Ord. No. 595, A V, § 4, 5-11-1982]
The following described substances, materials, waters or waste
shall be limited in discharges to municipal systems to concentrations
or quantities which will not harm either the sewers, wastewater treatment
process or equipment, will not have an adverse effect on the receiving
stream, or will not otherwise endanger lives, limb, public property,
or constitute a nuisance. The city commission may set limitations
lower than the limitations established in the regulations below if
in its opinion such more severe limitations are necessary to meet
the above objectives. In forming its opinion as to the acceptability,
the city commission will give consideration to such factors as the
quantity of subject waste in relation to flows and velocities in the
sewers, materials of construction of the sewers, the wastewater treatment
process employed, capacity of the wastewater treatment plant, degree
of treatability of the waste in the wastewater treatment plant, and
other pertinent factors. The limitations or restrictions on materials
or characteristics of waste or wastewaters discharged to the sanitary
sewer which shall not be violated without approval of the city commission
are as follows:
(a)
Wastewater having a temperature higher than 150° F. (65°
C.).
(b)
Wastewater containing more than 25 milligrams per liter of petroleum
oil, nonbiodegradable cutting oils, or products of mineral oil origin.
(c)
Wastewater from industrial plants containing floatable oils, fat,
or grease.
(d)
Any garbage that has not been properly shredded (see Section 17-1, "Properly shredded garbage"). Garbage grinders may be connected to sanitary sewers from homes, hotels, institutions, restaurants, hospitals, catering establishments, or similar places where garbage originates from the preparation of food in kitchens for the purpose of consumption on the premises or when served by caterers.
(e)
Any waters or wastes containing iron, chromium, copper, zinc, and
similar objectionable or toxic substances to such degree that any
such material received in the composite wastewater at the wastewater
treatment works exceeds the limits established by the city commission
for such materials.
(f)
Any waters or wastes containing odor-producing substances exceeding
limits which may be established by the city commission.
(g)
Any radioactive wastes or isotopes of such half-life or concentration
as may exceed limits established by the city commission in compliance
with applicable state or federal regulations.
(h)
Quantities of flow, concentrations, or both which constitute a "slug"
as defined herein.
(i)
Waters or wastes containing substances which are not amenable to
treatment or reduction by the wastewater treatment processes employed,
or are amenable to treatment only to such a degree that the wastewater
treatment plant effluent cannot meet the requirements of other agencies
having jurisdiction over discharge to the receiving waters.
(j)
Any water or wastes which, by interaction with other water or wastes
in the public sewer system, release obnoxious gases, form suspended
solids which interfere with the collection system, or create a condition
deleterious to structures and treatment processes.
[Ord. No. 595, A V, § 5, 5-11-1982]
If any waters or wastes are discharged or are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics enumerated in Section 17-49, and which in the judgment of the city commission may have a deleterious effect upon the wastewater facilities, processes, equipment or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the city commission may:
(a)
Reject the wastes;
(b)
Require pretreatment to an acceptable condition for discharge to
the public sewers;
(c)
Require control over the quantities and rates of discharge; and/or
(d)
Require payment to cover the added costs of handling and treating the wastes not covered by sewer charges under the provisions of Section 17-47 of this article.
If the city commission permits the pretreatment or equalization
of waste flows, the design and installation of the plants and equipment
shall be subject to the review and approval of the city commission
and the North Dakota State Department of Health.
[Ord. No. 595, A V, § 6, 5-11-1982]
Grease, oil and sand interceptors shall be provided when, in the opinion of the city commission, they are necessary for the proper handling of liquid wastes containing floatable grease in excessive amounts as specified in Section 17-49 (c), 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 North Dakota Plumbing Code and shall be located as to be readily and easily accessible for cleaning and inspection. In the maintaining of these interceptors, the owner shall be responsible for the proper removal and disposal by appropriate means of the captivated material and shall maintain records of the dates and means of disposal which are subject to review by the city commission. Any removal and having of the collected materials not performed by owner personnel must be performed by currently licensed waste disposal firms.
[Ord. No. 595, A V, § 7, 5-11-1982]
Where pretreatment or flow-equalizing facilities are provided
or required by any waters or wastes, they shall be maintained continuously
in satisfactory and effective operation by the owner at his expense.
[Ord. No. 595, A V, § 8, 5-11-1982]
When required by the city commission, the owner of any property
serviced by a building sewer carrying industrial wastes shall install
a suitable structure together with such necessary meters and other
appurtenances in the building sewer to facilitate observation, sampling,
and measurement of the wastes. Such structures, when required, shall
be accessibly and safely located, and shall be constructed in accordance
with plans approved by the city commission. The structure 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.
[Ord. No. 595, A V, § 9, 5-11-1982]
The city commission may require a user of sewer services to
provide information needed to determine compliance with this chapter.
These requirements may include:
(a)
Wastewaters discharge peak rate and volume over a specified time
period.
(b)
Chemical analyses of wastewaters.
(c)
Information on raw materials, processes and products affecting wastewater
volume and quality.
(d)
Quantity and disposition of specific liquid, sludge, oil, solvent
or other materials important to sewer use control.
(e)
A plot plan of sewers of the user's property showing sewer and
pretreatment facility location.
(f)
Details of wastewater pretreatment facilities.
(g)
Details of systems to prevent and control the losses of materials
through spills to the municipal sewer.
[Ord. No. 595, A V, § 10, 5-11-1982]
All measurements, tests and analyses of the characteristics
of waters and wastes to which reference is made in this chapter 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. Sampling methods, location, times, durations,
and frequencies are to be determined on an individual basis by the
city commission.
[Ord. No. 595, A V, § 11, 5-11-1982]
No statement contained in this article shall be construed as
preventing any special agreement or arrangement between the city and
any industrial concern whereby an industrial waste of unusual strength
or character may be accepted by the city for treatment.
