No user shall contribute or cause to be contributed, directly or indirectly,
any pollutant or wastewater which will pass through or interfere with the
operation or performance of the POTW. These general prohibitions apply to
all users of a POTW, whether or not the user is subject to Federal Categorical
Pretreatment Standards or any other federal, state or local pretreatment standards
or requirements.
A.
No user shall introduce or cause to be introduced into
the POTW the following pollutants, substances or wastewater:
(1)
Any liquids, solids or gases which by reason of their
nature or quantity are, or may be, sufficient either alone or by interaction
with other substances to cause fire or explosion, to be injurious in any other
way to the POTW or to the operation of the POTW, including, but not limited
to, wastestreams with a closed flashpoint of less than 140º F. or 60º
C. using the test methods specified in 40 CFR § 261.21. At no time
shall two successive readings on an explosion hazard meter at the point of
discharge into the system (or at any point in the system) be more than 5%,
nor any single reading over 10% of the lower explosive limit (LEL) of the
meter. Prohibited materials include, but are not limited to, gasoline, kerosene,
naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides,
chlorates, perchlorates, bromates, carbides, hydrides and sulfides, and any
other substance which is a fire hazard or a hazard to the system.
(2)
Solid or viscous substances which may cause obstruction
to the flow in a sewer or other interference with the operation of the wastewater
treatment facilities such as, but not limited to, grease, garbage with particles
greater than 1/8 inch in any dimension, animal guts or tissues, paunch
manure, bones, hair, hides or fleshing, entrails, whole blood, feathers, ashes,
cinders, sand, spent lime, stone or marble dust, metal, glass, straw, shavings,
grass clippings, rags, spent grains, spent hops, wastepaper, wood, plastics,
gas, tar, asphalt, residues, residue from refining or processing of fuel or
lubricating oil, mud, glass grinding or polishing wastes.
(3)
Grease, oil or sand interceptors shall be required when,
in the opinion of the Authority, they are necessary for the proper handling
of liquid wastes containing floatable grease in such amounts as to cause obstruction
to the flow in a sewer or other interference with the operation of the wastewater
treatment facilities, sand or other harmful ingredients, except 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 Authority and shall be located
as to be readily and easily accessible for cleaning and inspection. In the
maintaining of these interceptors, the owner(s) shall be responsible for the
proper removal and disposal by appropriate means of the captured material
and shall maintain records of the dates and means of disposal which are subject
to review by the Authority. Any removal and hauling of the collected materials
not performed by the owner's personnel must be performed by currently licensed
waste disposal firms.
(4)
Petroleum oil, nonbiodegradable cutting oil or products
of mineral oil origin in any amount.
(5)
Pollutants which can cause corrosive structural damage
to the POTW, but in no case shall the wastewater pH be less than 5.0.
(6)
Any wastewater containing toxic pollutants which, either
singly or by interaction with other pollutants, can injure or interfere with
any wastewater treatment process, constitute a hazard to humans and animals,
create a toxic effect in the receiving waters or the POTW or exceed the limitations
set forth in a Federal Categorical Pretreatment Standard. A toxic pollutant
shall include, but not limited to, any pollutant identified pursuant to § 307(a)
of the Act.
(7)
Any noxious or malodorous liquids, gases or solids which,
either singly or by interaction with other wastes, can create a public nuisance
or hazard to life, or may prevent safe entry into the sewers for maintenance
or repair.
(8)
Any substance which may cause the POTW effluent or any
other product of the POTW, such as residues, sludges or scum, to be unsuitable
for reclamation or reuse, or to interfere with the reclamation process. In
no case shall a substance discharged to the POTW cause the POTW to be in noncompliance
with sludge use or disposal criteria, guidelines or regulations developed
under § 405 of the Act; or any criteria, guidelines or regulations
affecting sludge use or disposal developed pursuant to the Solid Waste Disposal
Act, the Clean Air Act, the Toxic Substance Control Act or state criteria
applicable to the sludge management method being used.
(9)
Any substance which can pass through and, as a result,
cause the POTW to violate its NPDES permit or the receiving water quality
standards.
(10)
Any wastewater with objectionable color not removed in
the treatment process such as, but not limited to, dye wastes and vegetable
tanning solutions, which consequently impart color to the treatment plant's
effluent, thereby violating the Authority's NPDES permit. Color (in combination
with turbidity) shall not cause the treatment plant effluent to reduce the
depth of the compression point for photosynthetic activity by more than 10%
from the seasonably established norm for aquatic life.
(11)
Any wastewater having a temperature which can inhibit
biological activity in the POTW treatment plant resulting in interference,
but in no case wastewater with a temperature at the introduction into the
POTW which exceeds 40º C. or 10º F.
(12)
Any pollutants, including oxygen-demanding pollutants
(BOD, etc.) released at a flow rate and/or pollutant concentration which can
cause interference to the POTW. In no case shall a waste load have a flow
rate or contain concentrations or qualities of pollutants that exceed, for
any time period longer than 15 minutes, more than five times the average two-hour
concentration, quantities or flow during normal operation, unless otherwise
authorized, in writing, by the Authority.
(13)
Any wastewater containing any radioactive wastes or isotopes
of such half-life or concentration as may exceed limits established by the
Authority in compliance with applicable state or federal regulations.
(14)
Medical wastes are prohibited from entering the Authority's
sewer system.
(15)
Detergents, surface active agents or other substances
which may cause excessive foaming in the POTW.
(16)
Any wastewater which can cause a hazard to human life
or create a public nuisance.
B.
No user shall discharge or cause to be discharged any
stormwater, surface water, groundwater, roof runoff, subsurface drainage,
swimming pool drainage, cooling water, unpolluted industrial or nonresidential
process water. The discharge of cooling water from air-conditioning units
with cooling towers or recirculating systems or from air-conditioning units
using flow-through or unrecirculating systems is prohibited. The sanitary
sewers are not designed to handle the cooling water volumes produced by air-conditioning
units. Cooling water free from bacteria and harmful chemicals may be drained
into storm sewers in accordance with state and federal requirements.
C.
Septic tank wastes. No person shall discharge or cause
to be discharged any of the following described wastes to the Authority's
wastewater treatment facilities:
These appurtenances are required of all new facilities (i.e., food establishments)
and any existing facilities of the same type whose wastewater discharges into
the Authority's sewer system. The size, type of construction and location
of installation shall be approved by the Authority prior to installation.
A.
Grease traps are to be installed to treat wastewater
emanating from any establishment involved in the preparation of food. Such
establishments include, but are not limited to, motels, cafeterias, restaurants,
hospitals, schools and other institutions. Wastewater from garbage grinders
is prohibited from entering into the Authority's sewer system. The grease
trap shall be placed outside the building and shall discharge into the sewer
system. Grease traps shall be located within 20 to 30 feet from the plumbing
fixtures served to prevent congealing and clogging of waste lines. The minimum
size of the grease trap permitted is 1,000 gallons. Other design considerations
include:
(1)
The inlet and outlet on the grease trap shall be properly
baffled.
(2)
Manhole is to be finished to grade to allow for easy
access for proper maintenance.
(3)
Inaccessibility of the trap to insects and vermin. The
grease trap shall be constructed of concrete and of the Authority's specifications.
B.
Where it has been determined that the minimum size grease
trap of 1,000 gallons is not large enough, the following equation(s) are to
be utilized to determine the appropriate grease trap size:
(1)
Restaurants.
|
Formula: Gallons = (D) x (GL) x (ST) x (HR) x (LF)
| |||
|---|---|---|---|
|
Where:
| |||
|
D
GL
ST
HR
LF
|
=
=
=
=
=
|
Number of seats in dining area
Gallons of wastewater per meal (= 5 gallons)
Storage capacity factor (= 2)
Number of hours open
Loading factor:
1.25 interstate freeways
1.0 other freeways
1.0 recreational areas
0.8 main highways
0.5 other highways
| |
(2)
Hospitals, nursing homes, and other types of commercial
kitchens with varied seating capacities.
|
Formula: Gallons = (M) x (GL) x (ST) x (2.5) x (LF)
| |||
|---|---|---|---|
|
Where:
| |||
|
M
GL
ST
LF
|
=
=
=
=
|
Number of meals per day
Gallons of wastewater per meal (= .5 gallons)
Storage capacity factor (= 2)
Loading factor:
1.0 dish washing
0.75 without dish washing
| |
(3)
The Authority shall make the final determination pertaining
to sizing of grease traps that are technically computed using the above equations.
Upon promulgation of the Federal Categorical Pretreatment Standard under
§ 307 of the Clean Water Act for a particular industrial subcategory,
the Federal Categorical Pretreatment Standard, if more stringent than the
limitations imposed under the Authority's limitations for sources in that
subcategory, shall supersede the limitations imposed by the Authority. The
Federal Categorical Pretreatment Standards, located in 40 CFR, Chapter I,
Subchapter N, 405-471, are hereby incorporated into this chapter and the Authority's
resolution, including any additions or amendments that may be affected by
EPA from time to time.
The Authority may apply to the approval authority for modifications
of specific limits in the Federal Categorical Pretreatment Standards where
the Authority's wastewater treatment system achieves consistent removal of
pollutants limited by Federal Categorical Pretreatment Standards. The Authority
may then modify pollutant discharge limits in the Federal Categorical Pretreatment
Standards if the requirements contained in 40 CFR § 403.7 are fulfilled
and prior approval from the approval authority is obtained.
State requirements and limitations on discharge apply in any case where
they are more stringent than federal requirements and limitations or those
in the Authority's resolution.
The Authority reserves the right to establish in its resolution more
stringent limitations or requirements on discharges to the wastewater treatment
system if deemed necessary and appropriate.
No user shall ever increase the use of process water or in any way attempt
to dilute a discharge as a partial or complete substitute for adequate treatment
to achieve compliance with the limitations contained in the Federal Categorical
Pretreatment Standards or with any other pollutant specific limitation developed
by the Authority, state or federal agencies.
A.
Each user shall provide protection from accidental and
slug discharge of prohibited materials or other substances regulated by this
chapter and the Authority's resolution. Facilities to prevent accidental or
slug discharges of prohibited materials shall be provided and maintained at
the owner's or user's own cost and expense. Detailed plans showing facilities
and operating procedures to provide this protection shall be submitted to
the Authority before construction of the facility.
B.
An accidental discharge/slug control plan shall address,
at a minimum, the following:
(1)
Description of discharge practices, including nonroutine
batch discharges.
(2)
Description of stored chemicals.
(3)
Procedures for immediately notifying the Authority of
any accidental or slug discharge, as required by this subsection, following.
Such procedures include, but are not limited to, inspection and maintenance
of storage areas, handling and transfer of materials, loading and unloading
operations, control of plant site runoff, worker training, building of containment
structures or equipment, measures for containing toxic organic pollutants
(including solvents), and/or measures and equipment for emergency response.
C.
All users shall complete such a plan when requested by
the Authority. Review and approval of such plans shall not relieve the user
from the responsibility to modify its facility, as necessary, to meet the
requirements of this chapter and the Authority's resolution. It is the responsibility
of the user to immediately telephone and notify the POTW of any accidental
or slug discharge incident. The notification shall include the location of
the discharge, type of waste, concentration and volume and corrective actions.
D.
Written report. Within 10 days following an accidental
discharge, the user shall submit to the Authority a detailed written report
describing the cause of the discharge and the measures to be taken by the
user to mitigate and prevent any expense, loss, damage, or other liability
which may be incurred as a result of damage to the POTW or aquatic life or
any other damages to person or property. Such report shall not relieve the
user of any fines, civil penalties or other liability which may be imposed
by this chapter and the Authority's resolution or other applicable law. This
written report shall be signed by an authorized representative of the user.
E.
Notice to employees. A notice shall be permanently posted
on the user's bulletin board or other prominent place advising employees whom
to call in the event of a dangerous discharge. Employers shall insure that
all employees who may cause such a dangerous discharge to occur are advised
of the emergency notification procedures.
