No person shall discharge or cause to be discharged
stormwater, groundwater, roof runoff, subsurface drainage or uncontaminated
cooling or process water to any sanitary or unpolluted industrial
sewer.
Stormwater and all other unpolluted drainage
shall be discharged to such sewers as are specifically designated
as storm sewers or to a natural outlet approved by the Superintendent.
Industrial cooling water or unpolluted process waters may be discharged
on approval of the Superintendent to a storm sewer or natural outlet.
All permits issued by county, state and federal agencies shall be
obtained for any and all such discharges.
No person shall discharge or cause to be discharged
any of the following described waters or wastes to any public sewers:
A.
Any gasoline, benzene, naphtha, 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 injure or interfere with any waste treatment process,
constitute a hazard to humans or animals, create a public nuisance
or create any hazard in the receiving waters of the wastewater treatment
plant.
C.
Any waters or wastes having a pH lower than five point
five (5.5) or higher than eight point five (8.5) or having any other
corrosive property capable of causing damage or hazard to structures,
equipment and personnel of the wastewater works.
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, bones, cinders, sand, mud, straw,
shavings, metal, glass, rags, feathers, tar, plastics, wood, garbage,
whole blood, paunch manure, hair or fleshings, entrails, paper dishes,
paper towels, cups, milk containers, etc.
E.
Any liquids with a temperature greater than 150º
F.
F.
Wastewater containing more than 25 milligrams per
liter of petroleum oil, nonbiodegradable cutting oils or products
of mineral oil origin.
G.
Wastewater from industrial plants containing floatable
oils, fats or grease.
No person shall discharge or cause to be discharged
the following described substances, materials, waters or wastes if
it appears likely in the opinion of the Superintendent that such wastes
can harm either the sewers, wastewater treatment process or equipment;
have an adverse effect on the receiving stream; or can otherwise endanger
life, limb or public property; or constitute a nuisance. The Superintendent
may set limitations to meet the above objectives. The substances prohibited
are:
A.
Industrial wastewater from industrial plants.
B.
Any waters or wastes containing phenols or other taste-
or odor-producing substances.
C.
Any radioactive wastes or isotopes of such half-life
or concentration as may exceed limits established by the Superintendent
in compliance with applicable state or federal regulations.
D.
Unusual quantities of flow or concentrations, or both,
which constitute a slug, as defined herein.
E.
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 degree that the
wastewater treatment plant effluent cannot meet the requirements of
other agencies having jurisdiction over discharge to the receiving
waters or to water reuse.
F.
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.
G.
Any waters or wastes having a pH in excess of eight
point five (8.5) or less than five point five (5.5).
H.
Materials which exert or cause unusual concentrations
of suspended or settleable solids, discoloration, oxygen demand or
chlorine demand.
I.
The following additional substances having concentrations
in excess of those listed:
|
Substance
|
Concentration
Limit
(milligrams
per liter)
| |
|---|---|---|
|
Cadmium
|
0.4
| |
|
Hexavalent chromium
|
0.2
| |
|
Total chromium
|
4.0
| |
|
Copper
|
0.8
| |
|
Lead
|
0.2
| |
|
Mercury
|
0.2
| |
|
Nickel
|
4.0
| |
|
Zinc
|
1.2
| |
|
Arsenic
|
0.2
| |
|
Available chlorine
|
50.0
| |
|
Cyanide, free
|
0.4
| |
|
Cyanide, complex
|
1.6
| |
|
Selenium
|
0.2
| |
|
Sulfide
|
6.0
| |
|
Barium
|
4.0
| |
|
Manganese
|
4.0
| |
|
Gold
|
0.2
| |
|
Silver
|
0.2
| |
|
Fluorides
|
36.0
| |
|
Phenol
|
4.0
| |
|
BOD-5 (20º C.)
[Added 7-9-1987 by L.L. No. 8-1987] |
300.0
| |
|
Suspended solids
[Added 7-9-1987 by L.L. No. 8-1987] |
300.0
|
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 § 105-25 of this Article and which in the judgment of the Superintendent 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 Superintendent may reject the wastes and discontinue such sewer service until such wastes are pretreated to an acceptable condition for discharge. Pretreatment shall be subject to the review and approval of the Superintendent and shall be subject to the requirements of all applicable codes, ordinances and approval of state, county and federal agencies. Where pretreatment is required to meet the provisions of this chapter, such pretreatment shall comply with the latest federal pretreatment requirements as promulgated under § 307 of Public Law 92-500.
Grease, oil and sand interceptors shall be provided
when, in the opinion of the Superintendent, they are necessary for
the proper handling of liquid wastes containing floatable grease in
excessive amounts 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 Superintendent and shall be located as to
be readily and easily accessible for cleaning and inspection.
Where pretreatment or flow-equalizing facilities
are provided or required for any waters or wastes, they shall be maintained
continuously in satisfactory and effective operation by the owner
at his expense.
When required by the Superintendent, the owner
of any industrial property serviced by a building sewer shall, within
20 days of official notice to do so, install a suitable manhole in
the building sewer to facilitate observation, sampling and measurement
of the wastes. Such control manhole, when required, shall be accessible
and safely located and shall be constructed in accordance with plans
approved by the Superintendent. The control manhole 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.
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, the United States Environmental
Protection Agency's Manual of Methods for Chemical Analysis of Water
and Wastes or the ASTM's Annual Book of Standards, Part 23.
