No person shall discharge or cause to be discharged any stormwater,
surface water, groundwater, subsurface drainage, sump pump water,
cooling water, or unpolluted industrial process waters into any public
sanitary sewer system.
No person shall permit any sanitary sewage to flow into the
public storm drain from any building or premises owned by them or
under their control.
Except as hereinafter provided, no person shall discharge or
cause to be discharged any of the following described waters or wastes
in any public sewers:
A.
Any liquid or vapor having a temperature higher than 150° F.
B.
Any water or waste which may contain more than 100 parts per million,
by weight, of fat, oil, or grease.
C.
Any gasoline, benzene, naphtha, fuel oil, petroleum product or other
flammable or explosive liquid, solid or gas.
D.
Any garbage that has not been properly shredded.
E.
Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags,
feathers, tar, plastics, wood, paunch manure, or any other solid or
viscous substance capable of causing obstruction to the flow in sewers
or other interference with the proper operation of the sewage works.
F.
Any waters or waste having a pH lower than 6.0 or higher than 8.5
or having any other property to corrode or abrade, cause materials
to be deposited or attached to the walls of sewers, or having any
other property capable of causing damage or hazard to structures,
equipment, and personnel of the sewage works.
G.
Any waters or waste containing a toxic, poisonous, or radioactive
substance in sufficient quantity to interfere with any sewage treatment
process, constitute a hazard to humans, or create any hazard in the
sewage treatment plant.
H.
Any waters or wastes containing suspended solids of such character
and quantity that unusual attention or expense is required to handle
such materials at the sewage treatment plant.
I.
Any noxious or malodorous gas or substance capable of creating a
public nuisance.
J.
Any wastewater containing toxic pollutants in sufficient quantity,
either singly or by interaction with other pollutants, to inhibit
or disrupt any wastewater treatment process, constitute a hazard to
humans or animals or create a toxic effect in the receiving water
of the wastewater disposal system. A toxic pollutant shall include
but not be limited to any pollutant identified pursuant to Section
307(a) of the Clean Water Act.
Grease, oil and sand interceptors in excess of 100 parts per
million shall be provided at the owner's or premises' expense when
they are necessary for the proper handling of liquid wastes containing
grease in excessive amounts or any flammable wastes, sand or other
harmful ingredient; except that such interceptors shall not be required
for residential buildings where there are no contributing commercial
uses. All such interceptors shall be of a type and capacity approved
by the City Engineer, and shall be located as to be readily available
and easily accessible for cleaning and inspection. Waste interceptors
are subject to inspection by the Building Official or their appointed
agent.
All grease, oil and sand interceptors shall be maintained by the owner, at their expense, in continuously efficient operation at all times. In the event of an emergency, the City reserves the right to perform or contract for any maintenance activities for private interceptors, with all costs to be paid by the owner. The City reserves the right to shut off flows from the building or facility in event of noncompliance. Unpaid charges shall be a lien on the property pursuant to § 260-45B of this chapter.
The admission into the public sewers of any of the following
waters or wastes is prohibited except upon the written approval of
the City Engineer:
A.
The admission into the public sanitary sewer of any waters or wastes:
(1)
Having a five-day biochemical oxygen demand (BOD) greater than 300
parts per million by weight.
(2)
Containing more than 350 parts per million by weight of suspended
solids.
(4)
Having an average daily flow greater than 2% of the average daily
sewage flow of the City is prohibited except upon written approval
of the City Engineer.
(5)
Containing in excess of 0.02 mg/l total identifiable chlorinated
hydrocarbons.
(6)
Containing phosphorus in excess of 15 parts per million by weight.
A.
Facilities. Where required by the City, the owner of any building
or premises serviced by a public sanitary sewer shall provide protection
from an accidental discharge of prohibited materials or other substances
regulated by this chapter. Where necessary, facilities to prevent
accidental discharges shall be provided and maintained at the owner's
expense.
B.
Notification to the City. The owner or their agent shall notify the
City immediately upon having a slug or accidental discharge of substances
or wastewater in violation of this chapter to enable countermeasures
to be taken by the City to minimize damage to the sewage treatment
plant. The notification will not relieve the owner of liability for
any expense, loss or damage to City treatment facilities or the sewage
treatment process, or for any fines imposed on the City on account
thereof under any state or federal law. The owner shall insure that
all employees or occupants who may cause or discover such a discharge
are advised of the emergency notification procedure.
A.
The owner shall provide, at the owner's expense, preliminary treatment
of waste as may be necessary to:
B.
Plans, specifications, and any other pertinent information relating
to proposed preliminary treatment facilities must be submitted for
the approval of the City Engineer and the Minnesota Pollution Control
Agency (MPCA) and no construction of such facilities may be commenced
until said approvals are obtained in writing.
Where preliminary treatment facilities are provided, they shall be maintained continuously in satisfactory and effective operation by the owner. In the event of an emergency circumstance where the City has to perform or contract for any maintenance activities for pretreatment facilities, all such costs shall be paid by the owner. The City reserves the right to shut off flows from the building or premises in event of noncompliance. Unpaid charges shall be a lien on the property pursuant to § 260-45B of this chapter.
The owner of any building or premises served by a building sewer
carrying industrial wastes shall install a suitable control manhole
in the building sewer to facilitate observation, sampling and measurement
of the wastes. The manhole may be used for placement of flow or waste
measuring devices. The manhole shall be constructed in accordance
with plans approved by the City Engineer. Such manhole shall be located
in a public easement or right-of-way and shall be accessible by the
City at all times. The manhole shall be installed by the owner at
their expense, and be maintained to be safe and accessible at all
times.
All measured tests and analysis of the characteristics of water and wastes to which reference is made in this chapter or required by written agreement shall be determined with methods employed by the Minnesota Department of Health and MPCA, based upon samples taken at the control manhole provided for in § 260-39 of this chapter. In the event that no control manhole has been required, the nearest downstream manhole in the public sanitary sewer system from the point where the building or premises is connected shall be considered the control manhole for the purposes of this section.
No statement contained in this chapter shall be construed as
preventing any special agreement or arrangement between the City and
any industrial concern whereby an industrial sanitary sewer waste
of unusual strength or character may be accepted by the City for treatment,
subject to payment by the industrial concern, providing that National
Categorical Pretreatment Standards and the City's NPDES and state
disposal permit limitations are not violated. Special agreements shall
be approved by resolution of the City Council.
A.
Metering requirement. The City reserves the right to require metering
of sewage flow or to base estimated flow on metered water usage. Any
sewage flow metering system shall be approved by the City Engineer.
B.
Other meters. If an industrial user had discharges that are subject to § 260-33 and/or § 260-37, and also discharges normal strength sewage waste in the public sanitary sewage system, the City may permit or require the installation of other water meters to determine the quantities of normal strength sewage waste that can actually enter the public sanitary sewer system without pretreatment or a special agreement.
Any additional regulations or requirements promulgated by the
City regarding industrial waste(s) shall be adopted by resolution
of the City Council.
In addition to any penalties that may be imposed for violation of any provision of this chapter, the City may charge, and if not paid, special assess against, any owner of a building or premises the cost of recovery, repairs or restoration of any portion of the public sanitary sewer system and facilities due to the negligence or noncompliance of the owner pursuant to § 260-45B of this chapter. This includes service connection installation or repair, and charges for use of the public sanitary sewer system.
A.
Shut off by City only. No person, party or firm, without permission
from the City, shall shut off the connection from the building drain
or building sewer to the public sanitary sewer system. In emergency
situations, in the event where fluid is entering a building or premises
from the public sanitary sewer system, the system can be temporarily
plugged.
B.
Certification of unpaid account balances with taxes. Unpaid sanitary
sewer service charges or fees, interest and penalties on accounts
shall be certified to the County Auditor at least once annually and
more often if deemed necessary. Prior to certification, a notice shall
be sent by U.S. Mail to the account holder and state the date that
payment needs to be made prior to certification. The notice shall
also inform the account holder of their right to a hearing before
the City Council to dispute the amount owed. If approved by the City
Council, all delinquent amounts, penalties and charges, including
administrative fees, shall be certified to the County Auditor for
collection with property taxes.
