SECTION 98-6 [GENERAL SEWER USE REQUIREMENTS]
It shall be unlawful to discharge to any natural outlet within Clayton
County, or the area under the jurisdiction of CCWA, any wastewater or other
polluted waters, including septic tank effluent or cesspool overflow to any
open drain or well-penetrating, water bearing formation, except where
suitable treatment has been provided in the accordance with this
ordinance.
- General Prohibitions. No user shall introduce or cause to be
introduced into the POTW any pollutant or wastewater which causes pass
through or interference. These general prohibitions apply to all users of
the POTW whether or not they are subject to categorical pretreatment
standards or any other National, State, or local pretreatment standards
or requirements.
- Specific Prohibitions. No user shall introduce or cause to be
introduced into the POTW the following pollutants, substances, or
wastewater:
- Pollutants which create a fire or explosive hazard in the POTW,
including, but not limited to, wastestreams with a closed-cup
flashpoint of less than 140°F (60°C) using the test methods
specified in 40
CFR 261.21;
- Wastewater having a pH less than 5.0 or more than 12.5, or
otherwise causing corrosive structural damage to the POTW or
equipment;
- Solid or viscous substances in amounts which will cause
obstruction of the flow in the POTW resulting in interference, but no
case solids greater than one-half inch (0.5") in any dimension;
- Pollutants, including oxygen-demanding pollutants (BOD, etc.),
released in a discharge at a flow rate and/or pollutant concentration
which, either singly or by interaction with other pollutants, will
cause interference with the POTW;
- Wastewater having a temperature greater than 150°F
(65°C), or which will inhibit biological activity in the
treatment plant resulting in interference, but in no case wastewater
which causes the temperature at the introduction into the treatment
plant to exceed 104°F (40°C);
- Petroleum oil, nonbiodegradable cutting oil, or products of
mineral oil origin, in amounts that will cause interference or pass
through;
- Pollutants which result in the presence of toxic gases, vapors,
or fumes within the POTW in a quantity that may cause acute worker
health and safety problems;
- Trucked or hauled pollutants, except at discharge points
designated by the Manager in accordance with Sec. 98-7 (D) of this ordinance.
- Other Prohibitions. The following described substances, materials,
waters, or waste shall be limited in discharges to the public sanitary
sewers to concentrations or quantities which will not harm either the
sewers, wastewater treatment process or equipment, will not have an
adverse effect on the receiving stream, or will not otherwise endanger
lives, limb, public property, or constitute a nuisance. CCWA may set
limitations lower than the limitations established in the regulations
below if, such more severe limitations are necessary to meet the above
objectives. In determining acceptability, CCWA will consider the quantity
of subject waste in relation to the flows and velocities in the sewers,
materials or construction of the sewer, the wastewater treatment process
employed, capacity of the wastewater treatment plant, degree of
treatability of the waste in the wastewater treatment plant, the toxicity
of the pollutant, its persistence, degradability, and other pertinent
factors. The limitations and restrictions on the materials or
characteristics of the wastes or wastewaters discharged to the sanitary
sewer which shall not be violated without written approval of the Manager
or his designated representative are as follows:
- Noxious or malodorous liquids, gases, solids, or other wastewater
which, either singly or by interaction with other wastes, are
sufficient to create a public nuisance or a hazard to life, or to
prevent entry into the sewers for maintenance or repair;
- Wastewater that imparts color, which cannot be removed by the
treatment process, such as, but not limited to, dye wastes, and
vegetable tanning solutions, which consequently imparts color to the
treatment plant's effluent, thereby violating CCWA's NPDES or LAS
permits;
- Wastewater containing any radioactive wastes or isotopes except
in compliance with applicable State or Federal regulations;
- Storm water, surface water, ground water, artesian well water,
roof runoff, subsurface drainage, swimming pool drainage, condensate,
deionized water, noncontact cooling water, and unpolluted wastewater,
unless specifically authorized by the Manager;
- Sludges, screenings, or other residues from the pretreatment of
industrial wastes;
- Medical wastes, except as specifically authorized by the Manager
in a wastewater discharge permit;
- Wastewater causing, alone or in conjunction with other sources,
the treatment plant's effluent to fail a toxicity test;
- Detergents, surface-active agents, or other substances which may
cause excessive foaming in the POTW or in concentrations greater than
one hundred (100) mg/l;
- Fats, oils, or greases of animal or vegetable origin in
concentrations greater than two hundred (200) mg/l;
- Wastewater causing two readings on an explosion hazard meter at
the point of discharge into the sewer, or at any point in the POTW,
of more than ten percent (10 %) or any single reading over ten
percent (10 %) of the Lower Explosive Limit of the meter;
- Waters or wastes containing substances which are not amenable to
treatment or reduction by the wastewater treatment process employed,
or are amenable to treatment only to such a degree that the
wastewater plant effluent can not meet the requirements of other
agencies having jurisdiction over the discharge to the receiving
waters.
- Water or wastes containing taste and odor producing contaminants
in such quantities that after treatment of sewage these contaminants
impart their taste and odor to receiving waters.
- Any contaminant that is harmful to the operation or efficiency of
wastewater treatment plants, or to the health and welfare of the
residents of Clayton County.
- Ground paper products shall be prohibited from discharge to the
sanitary sewer.
- Discharges of materials or substances that would cause the
effluent quality from wastewater treatment plants to violate state
and federal standards.
- Total Residual Chlorine in concentrations of greater than
four (4) mg/l, unless agreed upon by the Manager to allow a higher
limit based on demand in sewer collection system.
- If any water or wastes are discharged or are proposed to be
discharged to the public sewers, which contain the substances identified
in Section 98-6 (A) 1, 2 or 3,and
which may have a deleterious effect upon the wastewater treatment
facilities, processes, equipment or receiving waters, or which otherwise
create a hazard to life or constitute a public nuisance, the Manager may:
- Reject the wastes,
- Require pretreatment to an acceptable condition for discharge to
the public sewers,
- Require control over the quantities and rates of discharge,
and/or
- Require surcharge payment to cover additional cost of handling
and treating the wastes not covered by existing taxes or sewer
charges.
If the pretreatment or equalization of waste flows is allowed, the
design and installation of the plants and equipment shall be subject to
the review and approval by CCWA. An owner or operator of any source to
which the pretreatment standards are applicable shall comply with
40 CFR
Part 403, as the same may be, from time to time, amended or
replaced.
- Pollutants, substances, or wastewater prohibited by this section
shall not be processed or stored in such a manner that they could be
discharged to the POTW.
The categorical pretreatment standards found at 40 CFR Chapter I,
Subchapter N, Parts 405-471 are hereby incorporated.
- Where a categorical pretreatment standard is expressed only in terms
of either the mass or the concentration of a pollutant in wastewater,
CCWA may impose equivalent concentration or mass limits in accordance
with 40 CFR
403.6(c).
- When wastewater subject to a categorical pretreatment standard is
mixed with wastewater not regulated by the same standard, CCWA shall
impose an alternate limit using the combined wastestream formula in
40 CFR
403.6(e).
- A user may obtain a variance from a categorical pretreatment standard
if the user can prove, pursuant to the procedural and substantive
provisions in 40 CFR
403.13, that factors relating to its discharge are fundamentally
different from the factors considered by EPA when developing the
categorical pretreatment standard.
- A user may obtain a net gross adjustment to a categorical standard in
accordance with 40
CFR 403.15.
- Where CCWA's wastewater treatment system achieves consistent removal
of pollutants limited by National Categorical Pretreatment Standards,
CCWA may apply to the approval authority for modification of these
specific limits. "Consistent removal" shall mean reduction in the amount
of a pollutant or alteration of the nature of a pollutant by the
wastewater treatment system to a less toxic or harmless state in the
effluent which is achieved by the system in ninety-five (95) percent of
the samples taken when measured according to procedures set forth in 40
CFR Part
403, Sec. 403.7 (c)(2). CCWA may then modify pollutant discharge
limits in the National Categorical Pretreatment Standards if the
requirements contained in 40 CFR
Part 403, Sec. 403.7 are fulfilled and prior approval from the
Georgia Environmental Protection Division is obtained.
State pretreatment standards located at Chapter 391-3-6-.08 of Georgia
Rules and Regulations for Water Quality Control are hereby
incorporated.
The following pollutant limits are established to protect against pass
through and interference. No person shall discharge wastewater containing
in excess of the following instantaneous maximum allowable discharge limits
(mg/l):
| 1. Arsenic |
0.2818 |
12. Zinc |
4.9591 |
| 2. Cadmium |
0.0321 |
13. Ammonia |
150 |
| 3. Chromium |
11.0295 |
14. BOD |
3000 |
| 4. Copper |
0.3184 |
15. Total Phosphorous |
13.35 |
| 5. Cyanide |
0.2473 |
16. TSS |
4500 |
| 6. Lead |
0.0778 |
17. Benzene |
0.3618 |
| 7. Mercury |
0.0014 |
18. Toluene |
1.7504 |
| 8. Molybdenum |
0.7241 |
19. Ethylbenzene |
1.0553 |
| 9. Nickel |
4.74 |
20. Total Xylene |
18.7432 |
| 10. Selenium |
0.2528 |
21. Total PAH |
0.4865 |
| 11. Silver |
6.1425 |
The above limits apply at the point where the wastewater is discharged
to the POTW. All concentrations for metallic substances are for "total"
metal unless indicated otherwise. The manager may impose mass limitations
in addition to, or in place of, the concentration-based limitations
above.
CCWA reserves the right to establish, by ordinance or in wastewater
discharge permits, more stringent standards or requirements on discharges
to the POTW.
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 a discharge limitation unless
expressly authorized by an applicable pretreatment standard or requirement.
The Manager may impose mass limitations on users who are using dilution to
meet applicable pretreatment standards or requirements, or in other cases
when the imposition of mass limitations is appropriate.
Go Back