Except as hereinafter provided, no person shall discharge or
cause to be discharged the following described waters or waste into
a public sewer:
A. Any liquid or vapor having a temperature higher than 140° F.
(1) Any water or waste which may contain more than 50 mg/l of animal
or vegetable fat, oil or grease.
(2) Any gasoline, benzine, naphtha, fuel oil or other inflammable or
explosive liquid, solid or gas.
(3) Any grease, oil or other substance that will become solid or viscous
at temperatures 60° C. and below after entering the system.
(4) Any garbage that is not properly shredded garbage.
(5) Any mineral, oil or grease, ashes, cinders, sand, mud, plastics,
wood, paunch manure, straw, shavings, metal, glass, rags, feathers,
asphalt, tar, manure, or other solid or viscous substance capable
of causing obstruction to the flow in sewers or other interference
with the proper operation of the system.
(6) Any waters or wastes having a pH lower than 6.0 or higher than 10.0
or having any other corrosive properties capable of causing damage
or hazard to structures, equipment and personnel of the system.
(7) Any effluent in excess of:
(c)
2 mg/l of total chromium;
(g)
0.02 mg/l of phenol or derivative of phenol.
(8) Any discharge of phosphorus, ammonia, nitrates, sugars or other nutrients
or wastewaters containing them which have an adverse effect on treatment
processes or cause stimulation of growths of algae, weeds, and slimes
which are or may become injurious to water supply, recreational use
of water, fish, wildlife, and other aquatic life.
(9) Any waters or wastes containing a toxic or poisonous substance in
sufficient quantity to injure any sewage treatment process, constitute
a hazard to humans or animals, or create any hazard in receiving waters
or in the sewage treatment plant.
(10)
Any noxious or malodorous gas or substance capable of creating
a public Nuisance.
(11)
Any waters or wastes of such character and quantity that unusual
attention or expense is required to handle such materials at the sewage
treatment plant or to maintain the system.
(12)
Any wastes that contain insoluble solids in excess of 10,000
ppm or exceeds a daily average of 500 ppm or that contains a combination
of soluble and insoluble material in excess of 20,000 ppm or exceeds
a daily average of 2,000 ppm.
(13)
Any wastes containing any insoluble substance that will not
pass four mesh per inch screen.
(14)
Any discoloration, such as, but not limited to dyes, inks, and
vegetable tanning solutions, or any unusual chemical oxygen demand,
chlorides, sulfates, or chlorine requirements in such quantities as
to be deleterious and a hazard to the system and its employees.
(15)
Any radioactive wastes or isotopes of such half-life or concentration
as may exceed limits established by applicable local, state or federal
regulations.
(16)
Any effluent containing phosphorus greater than 40 mg/l.
(17)
Any paints, oils, lacquers, thinners or solvents including any
waste containing toxic or deleterious substances which impair the
sewage treatment process or constitute a hazard to employees who work
in the sewage treatment plant.
[Added at time of adoption of Code (see Ch. 1, General Provisions,
Art. II)]
The North Kent Sewer Authority has adopted the North Kent Sewer
Authority Rules and Regulations, which apply throughout the Township,
and which regulate the characteristics of sewage discharged into the
public sewer, the discharge of nondomestic wastes, industrial users,
pretreatment and other matters. To the extent of inconsistency, the
NKSA Rules and Regulations supersede any contrary provision of this
chapter or Code.
[Added by Ord. No. 2004-8]
A. Definitions.
As used in this section, the following terms shall have the meaning
indicated:
GREASE TRAP
A device designed to intercept, separate and retain fats,
oils, and grease from liquid waste and permit the liquid waste to
discharge into the sewer system.
B. Grease traps shall be installed at the sole expense of the customer:
(1) If the Township determines they are necessary for the proper handling
of liquid wastes containing grease in excessive amounts;
(2) If the Township, State of Michigan, or County of Kent regulations
or plumbing codes require such installation; or
(3) If any regulatory agency having jurisdiction determines that existing
installations are inadequate to protect the sewer system.
C. All grease
traps shall be of a type and capacity approved by the Township or
by other regulatory agencies having jurisdiction and shall be located
so as to be readily accessible for cleaning and inspection.
D. Grease traps shall be constructed by impervious materials capable
of withstanding abrupt and extreme changes in temperature. They shall
be of substantial construction, watertight, and equipped with easily
removable covers which, when bolted in place, shall be gastight and
watertight. Grease traps shall be installed in compliance with current
plumbing codes adopted by the Township or other regulatory agency.
There shall be ample room and reasonable access to interceptors to
allow accurate sampling and preparation of samples for transport and
analysis. After the effective date of this chapter, all newly constructed
grease traps shall be accessible for maintenance and cleaning outside
of enclosed buildings in a place that is easily accessible for that
purpose.
E. After a newly constructed grease trap has been inspected by the Plumbing
Inspector, the customer responsible for maintaining the grease trap
shall contact the Township or its designee to arrange for an initial
inspection and registration to facilitate the administration of the
requirements of this chapter.
F. The customer shall maintain grease traps at his expense, in continuously
efficient operation at all times. Grease shall be removed from a grease
trap in a manner in accordance with the requirements of the United
States Environmental Protection Agency, the Michigan Department of
Environmental Quality, and this chapter. The Township and its agents
shall have the right to require evidence of records of maintenance
and disposal related to the operation of grease traps and oil and
sand interceptors or to inspect said records without prior notification.
G. No later than the 90 days following the effective date of this chapter,
the customer served by a grease trap shall arrange for and carry out
the inspection, cleaning and maintenance of the device by a licensed
qualified contractor and shall submit to the Township or its designee,
within 10 days of the inspection, cleaning, and maintenance, a report
of such inspection, cleaning and maintenance on a form approved by
or acceptable to the Township, and signed by the contractor and thereafter
repeat this inspection, cleaning, maintenance and reporting every
60 days. The customer shall accomplish said reporting by requiring
the contractor to forward a copy of his receipt and statement of services
rendered directly to the Township or its designee. The receipt and
statement must state:
(1) The condition of the operation ("adequate" or "inadequate");
(2) Whether the inlet and outlet of the trap was open or closed;
(3) Whether the trap and appurtenances require jetting and whether this
service was refused; and
(4) What services were rendered.
H. The Township or its designee, in its sole discretion, may determine
that conditions on the premises of a user require cleaning and/or
maintenance more often or less often than every 60 days. Said determination
shall be in writing and signed by the Township or its designee.
I. Regular grease trap pumping and cleaning requires pumping out all
liquids and solids and not leaving any pumpable material remaining
in the trap.
J. No decanted liquid from the pumped trap shall be returned to the
trap.
K. An administrative charge, in an amount established by resolution
of the Township Board, shall be levied against a customer for each
month or portion of a month following the date by which the required
report is not submitted. Failure to provide the report shall be grounds
for disconnection of the premises by turning off the public water
supply or other means, in addition to all other remedies provided
by law and ordinance.
L. In the event that the licensed contractor fails to provide the required
report, and notice of said failure is provided to the owner of the
premises, the Township or its designee shall accept written evidence
of the services provided from the owner, in the form of a copy of
the inspection and report of services provided by the licensed contractor.
Said written evidence must be provided within 10 business days of
the first-class mailing of the notice.
[Amended at time of adoption of Code (see Ch. 1, General
Provisions, Art. II)]
Sand interceptors shall be provided at the cost of the customer
when, in the opinion of the Township, they are necessary for the proper
handling of sand and similar ingredients, except that such interceptors
shall not be required for private living quarters or dwelling units.
Where installed, all sand interceptors shall be maintained for continuously
efficient operation at all times with the customer at the customer's
expense. All sand interceptors that are installed in commercial establishments
shall be cleaned out at least quarterly, except that as to those sand
interceptors which are of sufficient capacity as to require cleaning
out only at some lesser frequency, then the same shall be cleaned
out upon such frequency as recommended by the Township Engineer, giving
consideration to the capacity of the sand interceptor. An accurate
written report attesting to each such cleaning, signed by the property
owner or the responsible tenant, shall be promptly submitted to the
Township Clerk.