[Adopted 4-29-1966 by Ord. No. 297, approved 5-2-1966; amended in
its entirety 12-30-1968, approved 12-30-1968 (Ch. 124, Art. III, of the 1975 Code)]
The Borough of Bridgeport will accept industrial
wastes, provided that certain conditions are met, and further provided
that there shall be executed between the Borough Council and the industry
a formal, written agreement setting out in detail the characteristics
of the industrial wastes, the flow conditions which are to govern
and certain conditions with respect to the physical connection or
connections. As conditions vary with different industries, it is impracticable
to prepare an overall set of conditions which will be applicable in
all particulars to every conceivable type of industry. Rather, it
is the policy of the Borough Council to consider each application
separately and to establish conditions applicable to each industry
in the agreement to be executed in each specific instance.
Wastes possessing the following characteristics
will not be accepted:
A.
Any vapors or steam.
B.
Any fluids with temperature in excess of 80° F.
C.
Any fluid waste that contains in excess of 100 milligrams
per liter of fat, oil or grease, either vegetable or mineral.
D.
Any volatile, explosive or flammable substance, such
as benzene, gasoline, naphtha or fuel oil, or any substance having
a flash point below 100° F.
E.
Any solid or viscous matter which may cause any interference
with the flow of sewage, such as ashes, cinders, sand, mud, straw,
shavings, metal, glass, feathers, rags, tar, plastic, wood, paunch
manure, hair or similar substances.
F.
Any fluid wastes having a pH value of less than 6.5
or in excess of 9.0 or possessing other properties capable of causing
damage or hazard to sewers, structures or treatment processes.
G.
Any wastes containing toxic, poisonous substances
or color in sufficient concentration to interfere with the sewage
treatment process, to cause injury to animals or persons or to create
an unacceptable condition in the receiving streams.
H.
Any noxious or malodorous gas or substance which is
capable of causing a public nuisance or a hazard to health.
A.
When, in the opinion of the Borough Council's Superintendent
or Engineer, grease, oil and sand interceptors or oil reclaimers are
required, they shall be provided and maintained, at the expense of
the owner, in continuously efficient operating condition.
B.
All garages, washracks and similar establishments
or any other industrial or commercial wastewater source having a potential
of contributing grit, oils or grease shall provide for removal of
such substances with equipment, apparatus or devices acceptable to
the Borough before discharge to the Borough sewer.
The Borough Council reserves the right to require
preliminary treatment where the chemical, physical or biological characteristics
of the proposed industrial wastes, in the opinion of the Borough Council
or in the opinion of the Sanitary Water Board, make such preliminary
treatment desirable or mandatory. No new industrial connection shall
be permitted without a thorough review of proposed processes, potential
wastes and proposed treatment before discharge.
A.
Some of the characteristics which may dictate preliminary
treatment are listed below.
B.
In order that the Borough Council may be in a position
to determine in which instance and to what extent preliminary treatment
is necessary, the applicant must submit complete data on the manufacturing
process or processes creating the wastes. Complete data shall be considered
to mean data on the expected average, maximum and minimum daily flows;
a flow diagram showing points of application of chemicals; type and
quantities of the chemicals used per day or per shift; a schedule
of operations; expected chemical, physical and biological characteristics
of the industrial wastes; and the point or points of connection proposed
or in existence.
C.
In such instances where it is agreed that the industrial
waste will be received following preliminary treatment, drawings and
specifications shall be submitted for approval showing all pertinent
details of the construction proposed to accomplish the treatment.
Such drawings and specifications shall include details of the indicator-recorder,
register-type of fluid meter and housing to be used to meter the flow
of industrial wastes and also details of the control manhole to be
constructed on the industrial wastes sewer in an accessible location
within sidewalk or property lines. The control manhole shall be provided
with adequate access manhole covers of an approved type through which
access shall be possible to Borough personnel at all times.
D.
Where preliminary treatment facilities are required,
they shall be provided and continuously maintained in an effectively
operating condition at all times, at the expense of the industry.
E.
Each industry connected shall be responsible for maintaining
a quality of effluent from its premises which conforms to the provisions
established in the agreement with the Borough Council. Sampling and
analysis shall be done to conform with accepted practice and in accordance
with the current edition of "Standard Methods for the Examination
of Water and Wastewater."
F.
The cost of preparing and submitting data for consideration
by the Borough Council shall be borne by the industry. Likewise, the
cost of sampling and analysis to determine compliance with the terms
of the agreement shall be borne by the industry, although conducted
by the Borough Council or its duly authorized representative.
Industries permitted to connect to Borough sewers, even though not initially being required to provide preliminary treatment, shall be required to provide a control manhole and metering devices as described in § 442-22C.
No connection for industrial wastes shall be made prior to execution of an agreement as described herein. All agreements shall contain a statement of acceptance of the adjustment of wastewater volume to equivalent wastewater volume basis for computation of sewer rental charges as required in Article II of this chapter, as amended from time to time, or any other sewer rental ordinance as may be in effect.
A.
For purposes of determining sewer rental charges,
a factor, F, shall be applied to the flow of industrial or commercial
establishments. F shall be computed in accordance with Equation No.
1, taking into account the potential effect of: wastewater volume
44%, BOD 23%, suspended solids 31% and chlorine demand 2% on the chemical,
physical and biological characteristics and treatability of wastewater
in relation to these characteristics of domestic sanitary sewage.
|
Equation No. 1
 |
|
In which:
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|---|---|---|---|---|
|
F
|
=
|
A factor expressed in percentage as a whole
number, taken as 100% for domestic sanitary sewage
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|
a
|
=
|
Process waste discharge BOD (milligrams per
liter)
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|
b
|
=
|
Treatment plant domestic strength BOD (milligrams
per liter)
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|
c
|
=
|
Process waste discharge suspended solids (milligrams
per liter)
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|
d
|
=
|
Treatment plant domestic strength suspended
solids (milligrams per liter)
| ||
|
e
|
=
|
Process waste discharge chlorine demand (milligrams
per liter)
| ||
|
g
|
=
|
Treatment plant domestic strength chlorine demand
(milligrams per liter)
| ||
|
Wherever the ratio of process waste values to
treatment plant values is less than 1.0, that value shall be expressed
in the equation as 1.0; F may never be less than 100%
| ||||
B.
The volume of waste, V, determined in accordance with § 442-12, of this chapter, as amended, shall be multiplied by the factor F, and the resulting equivalent wastewater volume, Vp, shall be used in determining the sewer rental charge
in accordance with Equation No. 2.
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Equation No. 2
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|---|---|---|---|---|
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Vp = V x F
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In which:
| ||||
|
Vp
|
=
|
Equivalent volume of wastewater produced in
one quarter, expressed in cubic feet or thousands of gallons
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|
V
|
=
|
Volume of wastewater from the industrial or
commercial establishment produced in one quarter, expressed in cubic
feet or in thousands of gallons (one cubic foot equals 7.48 gallons;
1,000 gallons equals 133.69 cubic feet)
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C.
The quarter charge shall then be determined by Equation
No. 3.
|
Equation No. 3
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|---|---|---|---|---|
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Cq = Vp x r
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In which:
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Cq
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=
|
Quarterly charge in dollars
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|
r
|
=
|
Rate in dollars per cubic foot or rate in dollars
per 1,000 gallons established by the Borough Council
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D.
The Borough Council shall review the terms b, d, and
g of Equation No. 1 annually and shall make such adjustments as are
indicated by data on domestic sanitary sewage discharged to the sewers
of the Borough of Bridgeport.
(1)
Initially the values of these terms are hereby established
as follows:
|
b
|
=
|
290 milligrams per liter BOD
| |
|
d
|
=
|
120 milligrams per liter suspended solids
| |
|
g
|
=
|
6.0 milligrams per liter chlorine demand
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E.
After each review, the Borough Council may retain
the values previously adopted or change them upward or downward. Upon
adoption of a change in value of a term from a previously established
value, all industrial and commercial establishments with whom agreements
have been executed shall be notified of the change within 10 days.
Term values a, b, and g shall be used by the Borough in determining
the F factor being applied for the next succeeding fiscal period following
adoption.
In the event that any industry fails to conform
to these regulations or fails to comply with the terms and conditions
of its agreement with the Borough, which failure causes damage of
any sort to the Borough or Borough's employees or to the sewers or
sewage treatment plant, the Borough shall determine the extent of
the damage and bill the industry accordingly. If such bill is not
paid within five calendar days from the date of the bill, legal action
may be instituted to enforce collection, or the Borough may resort
to termination of the connection after giving 24 hours' notice.
