01/12/2021 Ordinances 9813ORDINANCE NO. 9813
An ordinance to amend Chapter 30 of the Grand Island City Code; to amend
Section 30-48 Other Prohibited Discharges as now existing, and any ordinance or parts of
ordinances in conflict herewith; and to provide for publication and the effective date of this
ordinance.
BE IT ORDAINED BY THE MAYOR AND COUNCIL OF THE CITY OF
GRAND ISLAND, NEBRASKA:
SECTION 1. Section 30 of the Grand Island City Code is hereby amended to
read as follows:
§30-48. Other Prohibited Discharges
No person shall discharge, or cause to be discharged to, any sanitary sewer, any of the
following described as substances, water, or wastes unless authorized by the Public Works Director:
(1) Any liquid or vapor having a temperature higher than 65 degrees Celsius (150 degrees
Fahrenheit); or which cause the wastewater entering the wastewater treatment facilities; (Lift
Stations, Pump Stations, Force Mains, etc.) to exceed 40° Celsius (104° Fahrenheit).
(2) Wastes containing oil or grease of petroleum origin shall be prohibited.
(3) Any gasoline, benzene, naphtha, fuel oil, mineral spirits, commercial solvent, motor oii, or other
flammable or explosive liquid, solid or gas, or any other petroleum derivative.
(4) Any water or wastes containing dissolved gases (such as hydrogen sulfide, sulfur dio�de,
nitrogen oxides, and ammonia) in concentrations sufficient to cause poisonous or toxic fumes or
waste-water, or a malodorous or harmful condition.
(5) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood,
asphaltic materials, cement or concrete, paunch manure, hair and fleshings, entrails, lime slurry, lime
residues, beer or distillery spent grains, chemical residues, paint residues, cannery waste, bulk solids,
or any other solid or viscous substances, in amounts capable of causing obstructions to flow in sewers
or interference with the proper operation of the wastewater treatment works.
(6) Any waters or wastes having a pH lower than 6.0 or higher than 9 at any time, or having any
other conosive property capable of causing damage or being a hazard to structures, equipment and
personnel of Yhe wastewater treatment works.
('7) Any waters or wastes containing pollutants in the form of compounds or elements, in solution or
suspension, in concentrations exceeding the following:
Pollutant Mazimum Concentration in mg/L
Arsenic(AS) .............................................................................................................. 0.050
Barium(BA) .............................................................................................................. 1.000
Cadmium(Cd) ........................................................................................................... 0.100
Chromium(Cr) (Total) .............................................................................................. 3.000
Copper(Cu} ............................................................................................................... 1.000
Cyanides(CI� ........................................................................................................... 2.000
Lead(Pb) ................................................................................................................... 0.100
Approved as to Form
January 11, 2021 tt CityAttomey
ORDINANCE NO. 9813 (Cont.)
Manganese(Mn) ........................................................................................................ 1.000
MercurY�Hg) ............................................................................................................. 0.005
Nickel(Ni) ................................................................................................................. 1.000
Selenium(Se) ............................................................................................................. 0.030
Silver(Ag) ... .............................................................................................................. 0100
The m�imum concentrations shown for the above metals may be used as a guide in design and plant
control, but may be altered by the director in the event of accumulative overload on the water
pollution control plant.
(8) Any waters or wastes containing heavy metals and toauc materials in concentrations prohibited
by state or federal rules, including but not limited to:
Antimony Strontium
Beryliium Tellurium
Bismuth Fungicides
Boron Herbicides
Cobalt Pesticides
Molybdenum Uranyl ion
Rhenium
Unless the permit required for discharge of industrial wastes specifies conditions of pretreatrnent,
concentrations, and volumes.
(9) Any noxious or malodorous gas or substance, capable of creating a public nuisance or hazard to
life or preventing entry into sewers for their inspection, maintenance, and repair.
(10) Any waters containing quantities of radium, naturally occurring, or artifcially produced
radioisotopes in excess of presently existing or subsequently accepted limits for drinking water as
established by the national committee on radiation protection and measuring.
(11) Any concentrated dye wastes, spent tanning solutions, ar other wastes which are highly colored,
or wastes which are of unusual volume, concentration of solids, or composition that may create
obstruction to the flow in sewers or interference with the wastewater treatrnent processes without
proper pretreatment and written approval of the director.
(12) Waters or wastes containing substances which are not amenable to treatment or reduction by the
wastewater treahnent processes employed, or are amenable to treatment only to the degree that the
wastewater treahnent plant effluent cannot meet the requirements of the NPDES permit.
(13) Any water or wastes containing more than 2,000 mg/L total solids, maximum of 100,000
gallons.
(14) Any water or wastes containing more than 230 mg/L chlorides monthly average concentration,
380 mg/L chlorides daily m�imum concentration (November 1— February 28 (29), 389 mg/L
chlorides daily maximum concentration (June 1— October 31) and 390 mg/L daily ma�cimum
concentration (March 1— May 31).
(15) Any water or wastes containing Conductivity greater than 2,000 umhos/cm monthly average
(April 1— September 30)
(16) Wastes at a flow raYe and/or pollutant discharge rate which is excessive over short periods of
time so that there is a treatment process overload and subsequent loss of treatment efficiency.
SECTION 2. Section 30 is now existing, and any ordinances or parts of
ordinances in conflict herewith be, and hereby are, repealed.
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ORDINANCE NO. 9813 (Cont.)
SECTION 3. This ordinance sha11 be in force and take effect from and after its
passage and publication, within fifteen days in one issue of the Grand Island Independent as
provided by law.
Enacted: January 12, 2021.
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Rog . Steele, Mayor
Attest:
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��y C�J(,��A � C�= �,C�F�POR4ic� 2Q
RaNae Edwards, City Clerk *: i•� *
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MFBRAS�P
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