The following words, terms and phrases, when used in this article,
shall have the meanings ascribed to them in this section, except where
the context clearly indicates a different meaning:
means the quantity of oxygen utilized in the biochemical
oxidation of organic matter by standard methods procedure in five
days at 20 degrees Centigrade, expressed in parts per million by weight.
means waterborne wastes normally discharged from sanitary
conveniences of dwellings, including apartment houses and hotels,
office buildings, factories and institutions, free from storm surface
water and industrial wastes. Normal domestic sewage means normal sewage
for the city in which the average concentration of suspended materials
and five-day BOD is established at 250 parts per million each, by
weight, on the basis of the normal contribution of 0.20 pounds per
capita. It is further expressly provided that the above concentration
of suspended materials and/or BOD shall be classified as industrial
wastes and made subject to all regulations pertaining there to, whether
or not such waste was partially of domestic origin.
means solid wastes from the preparation, cooking and disposing
of food, and from the handling, storage and sale of produce.
means all waterborne solids, liquids, or gaseous wastes resulting
from any industrial, manufacturing or food processing operation or
process, or from the development of any natural resource, or any mixture
of these with water or domestic sewage as distinct from normal domestic
sewage.
means the manager of the water and sewer systems of the city,
or his authorized deputy, agent, or representative.
means the logarithm (base 10) of the reciprocal of the hydrogen
ion concentration of a solution.
means the wastes from the preparation cooking, and dispensing
of food, exclusive of egg shells, bones, etc., that have been shredded
to such degree that all particles will be carried freely under the
flow conditions normally prevailing in public sewers, with no particles
greater that one-half inch in any dimension.
means a sewer in which all owners abutting properties shall
have equal rights, and is controlled by public authority.
means a public sewer which carries sewage and to which stormwater,
surface water, and groundwater are not intentionally admitted.
means a combination of the water-carried wastes from residences,
business buildings, institutions and industrial establishments.
means all facilities for collecting, pumping, treating and
disposing sewage.
means any city-owned facility, devices and structures used
for receiving and treating sewage from the city sanitary sewer systems.
means a pipe or conduit for carrying sanitary sewage.
means the laboratory procedures set forth in the latest edition,
at the time of analysis, of Standard Methods for the Examination of
Water and Waste Water as prepared, approved, and published jointly
by the American Public Health Association, the American Water Works
Association (AWWA), and the Water Pollution Control Federation.
means solids that either float on the surface, or are in
suspension in water, sewage, or other liquids and which, in accordance
with Standard Methods, are removable by laboratory filtering.
means any water or waste containing none of the following:
Free or emulsified grease or oil;
Acids or alkalis;
Phenols; or
Other substances in suspension, colloidal state or solution;
and
Noxious or odorous gases.
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It shall contain not more than ten parts per million each of
suspended solids and BOD. The color shall not exceed 50 parts per
million.
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(Ordinance 208, sec. 1, adopted 3/19/71)
(a)
No
person shall discharge, or cause to be discharged, into any sanitary
sewer any of the following described substances, materials, waters,
or wastes:
(1)
Any liquid or vapor having a temperature higher than 150 degrees
Fahrenheit (65 degrees centigrade), or any discharge which causes
the temperature of the total treatment plant influent to increase
at a rate of ten degrees Fahrenheit or more per hour or a combined
total increase to a plant influent temperature of 110 degrees Fahrenheit;
(2)
Any water or wastes which contain wax, grease, or oil, plastic, or
other substances that will solidify or become discernibly viscous
at temperatures between 32 degrees to 150 degrees Fahrenheit;
(3)
Flammable or explosive liquid, solids or gas, such as gasoline, kerosene,
benzine, naphtha, etc.;
(4)
Solid or viscous substances in quantities capable of causing obstruction
to the flow in sewers, or other interference with the proper operation
of the sewage works such as ashes, cinders, sand, mud, straw, shavings,
metal, glass, rags, feathers, tar, plastics, wood, whole blood, paunch
manure, hair and fleshings, entrails, lime slurry, lime residues,
slops, chemical residues, paint residues or bulk solids;
(6)
Any noxious or malodorous substance and which can form a gas, which either singly or by interaction with other wastes, is capable of causing objectionable odors or hazard to life; forms solids in concentration exceeding limits established in subsection (b) of this section; creates any other condition deleterious to structures or treatment processes; or requires unusual provisions, attention, or expense to handle such materials.
(b)
Except
in quantities, or concentration, or with provisions as stipulated
herein, it shall be unlawful for any person to discharge water or
wastes to the sanitary sewer containing:
(1)
Free or emulsified oil and grease exceeding on analysis an average
of 100 parts per million (833 pounds per million gallons) of either
or both or combinations of free or emulsified oil and grease, if,
in the opinion of the manager, it appears probably that such wastes:
a.
Can deposit grease or oil in the sewer lines in such a manner as
to clog the sewers;
b.
Can overload skimming and grease handling equipment;
c.
Are not amenable to bacterial action and will therefore pass to the
receiving waters without being affected by normal sewage treatment
processed; or
d.
Can have deleterious effects on the treatment process due to the
excessive quantities.
(2)
Acids or alkalis which attack or corrode sewers or sewage disposal
structures, or have a pH value lower than 5.5 or higher than 9.5;
(3)
Cyanide or cyanogens compounds capable of liberating hydrocyanic
gas on acidification in excess of two parts per million by weight
as CN in the wastes from any outlet into the public sewers;
(4)
Materials which exert or cause:
a.
Unusual concentrations of solids or composition; as for example;
total suspended solids of greater than 250 parts per million of inert
nature or such as Fuller’s earth and/or total dissolved solids
such as sodium chloride, or sodium sulfate;
b.
Excessive discoloration;
c.
Biochemical oxygen demand or an immediate oxygen demand greater than
250 parts per million;
d.
High hydrogen sulfide content; or
e.
Unusual flow and concentration shall be pretreated to a concentration
acceptable to the city water and sewer system if such wastes can cause
damage to collection facilities, impair the process, incur treatment
cost exceeding those of normal sewage, or render the water unfit for
stream disposal or industrial use.
(Ordinance 208, sec. 2, adopted 3/19/71)
(a)
Persons
or owners discharging industrial wastes which exhibit any of the prohibited
wastes set out in this article shall be required to pretreat said
wastes or otherwise dispose of such wastes so as to make the remaining
waste acceptable to the city prior to admission of said waste into
a sanitary sewer.
(b)
Plans,
specifications, and any other pertinent information relating to proposed
preliminary treatment and control facilities shall be submitted for
the approval of the city, and no construction of such facilities shall
be commenced until approval is obtained in writing. Preliminary treatment
and control facilities shall be constructed so as to provide all of
the following:
(1)
Prevention of prohibited waste from entering a sanitary sewer;
(2)
Control of the quantities and rates of discharge of industrial wastes
into a sanitary sewer; and
(3)
An accessible entry so that any authorized employee of the city may
readily and safely measure the volume and samples of the flow prior
to the admission of said industrial wastes into a sanitary sewer.
(c)
When
preliminary treatment and control facilities are provided for any
water or wastes, they shall be maintained continuously in satisfactory
and effective operation by the owner at his expense.
(d)
The
manager and other duly authorized employees of the city acting as
his duly authorized agent and bearing proper credentials and identification
shall be permitted to gain access to such properties as may be necessary
for the purpose of inspection, observation, measurement, sampling
and testing of sewage and/or industrial wastes.
(Ordinance 208, sec. 3, adopted 3/19/71)
(a)
The
service charge for any person, firm, owner or corporation discharging
wastes into the system is 25 percent of the total cost of water purchased
by the owner for that billing period, provided that the city meter
is the only source of water used by the owner and provided that the
BOD in the wastewater or the suspended materials does not exceed the
normal concentration of 250 parts per million.
(b)
When
either the BOD or the suspended solids, or both, are found to exceed
the stated 250 ppm at the point entering the city’s system,
a surcharge as provided in the fee schedule in appendix A of this
Code shall be applied to the billing rate by multiplying the normal
base rate by the factor obtained from dividing the actual measured
BOD by 250 and also by the factor obtained from dividing the actual
measured suspended solids by 250, each such factor to be applied individually
and only when greater than one. The surcharge will be made for each
factor that exceeds one and shall be additive.
(c)
The
determination of BOD and suspended materials shall be made by an independent
laboratory selected by the city. The time of selection of the sample
shall be at the sole discretion of the city. The applicable surcharge
determined by such tests shall be retroactive for two billing periods
and shall continue for six billing periods unless subsequent tests
determine that the surcharge should be further increased:
(d)
When
any such test made at the discretion of the city shows that a surcharge
shall be applied, continued or increased over the base rates, whichever
is applicable, then the owner shall be billed at the rate as provided
in the fee schedule in appendix A of this Code for each test to cover
the costs of sampling, mailing and handling plus the laboratory fees.
When a surcharge is in effect, the test will be made at least each
15 days. When such tests made at the discretion of the city reveals
that the surcharge is no longer applicable, then no costs will be
made to the owner for such test or tests.
(Ordinance 208, sec. 4, adopted 3/19/71)
The city shall retain the right to disconnect waste disposal
service in the following circumstances:
(1)
Where
acids or chemicals damaging to sewer lines or treatment processes
are released to the sewer causing rapid deterioration of these structures
or interfering with proper treatment of sewage, the manager is authorized
immediately to terminate service by such measures as are necessary
to protect the facilities;
(2)
Where
any governmental agency informs the city that the effluent from the
treatment plant is no longer of a standard permitted for surface runoff
and it is found that the owner is delivering waste to the city’s
system that cannot be sufficiently diluted by mixing with the city’s
waste or requires treatment that is not provided by the city as normal
domestic treatment. In this instance, the city shall immediately supply
the owner with the governmental agencies report and provide the owner
with all pertinent information. The owner’s waste line will
then be disconnected when the city is informed that it can no longer
continue to release their effluent for surface runoff. The owner’s
waste treatment service shall remain disconnected until such time
that the owner has provided additional pretreatment facilities designed
to remove the objectionable cause from owner’s industrial wastes;
(3)
Where
the owner delivers his wastewater at an uncontrolled, variable rate
in sufficient quantity that it causes an imbalance in the sewage treating
system.
(Ordinance 208, sec. 5, adopted 3/19/71)
