A. It
is unlawful for any user to contribute or cause to be contributed,
directly or indirectly, any pollutant or wastewater which will interfere
with the operation of performance of the POTW. These general prohibitions
apply to all such users of the POTW, whether or not the user is subject
to National Categorical Pretreatment Standards or any other national,
state, or local pretreatment standards or requirements.
B. It
is unlawful for any user to contribute the following substances to
the POTW:
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 or be injurious in any other
way to the POTW or to the operation of the POTW. At no time shall
two successive readings on an explosion hazard meter (or at any point
in the system) be more than five percent nor any single reading over
10 percent 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, sulfides, or
any other wastestream with a closed cup flashpoint of less than 140
degrees Fahrenheit or 60 degrees Centigrade using the test methods
specified in 40 CFR 261.21;
2. Solid
or viscous substances which may cause obstruction to the flow in a
sewer or other interference with the operation of the POTW such as,
but not limited to: grease, garbage, (except properly shredded garbage),
animal guts or tissues, paunch manure, bones, hair, hides, fleshings,
entrails, whole blood, feathers, ashes, cinders, sand, spent lime,
stone or marble dust, metal, glass, straw, shavings, grass clippings,
rags, spent grains, spent hops, waste paper, wood, plastics, gas,
tar, asphalt residues, residues from refining, or processing of fuel
or lubricating oil, mud, or glass grinding or polishing wastes;
3. Any
wastewater having a pH less than 5.0, or wastewater having any other
corrosive property cable of causing damage or hazard to structures,
equipment and/or personnel of the POTW;
4. Any
wastewater containing toxic pollutants in sufficient quantity, either
singly or by interaction with other pollutants, to injure or interfere
with any wastewater treatment process, constitute a hazard to humans
or animals, create a toxic effect in the receiving waters of the POTW,
or to exceed the limitation set forth in a Categorical Pretreatment
Standard;
5. Any
noxious or malodorous liquids, gases, or solids which either singly
or by interaction with other wastes are sufficient to create a public
nuisance or hazard to life or are sufficient to prevent entry into
the sewers for maintenance and repair;
6. Any
substance which may cause the POTW's effluent or any other product
of the POTW such as residues, sludges, or scums, to be unsuitable
for reclamation and 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 Section 405 of the Act, the Clean Air
Act, the Toxic Substances Control Act or state criteria applicable
to the sludge management method being used;
7. Any
substance which will cause the POTW to violate its NPDES permit and/or
state disposal system permit or the receiving quality standards;
8. Any
wastewater with objectionable color not removed in the treatment process,
such as, but not limited to, dye wastes and vegetable tanning solutions;
9. Any
wastewater having a temperature which will 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 40 degrees Centigrade or 104 degrees Fahrenheit;
10. Any pollutants, including, oxygen demanding pollutants (BOD, etc.),
released at a flow rate and/or pollutant concentration which will
cause interference to the POTW. In no case shall a slug load have
a flow rate or contain concentration or qualities of pollutants that
exceed for any time period longer than 15 minutes more than five times
the average 24-hour concentration, quantities, or flow during normal
operation;
11. Any wastewater containing any radioactive wastes or isotopes of such
halflife or concentration as may exceed limits established by the
director in compliance with applicable state or federal regulations;
12. Any wastewater which causes a hazard to human life or creates a public
nuisance;
13. Any other substance with the potential to create a hazardous condition
in the POTW.
14. Any trucked or hauled wastes, except at discharge points designated
by the director.
(Ord. 1718 § 1, 1983; Ord. 2280 § 2, 1989; Ord. 2707 § 2, 1993)
Upon the promulgation of the Federal Categorical Pretreatment
Standards for a particular industrial subcategory, the Federal Standard,
if more stringent than limitations imposed under this chapter for
sources in that subcategory, shall immediately supersede the limitations
imposed under this chapter. The National Categorical Standards found
in 40 CFR Chapter 1, Subchapter N, Parts 405—471, are incorporated
into this chapter and made part hereof. The director shall notify
all affected users of the applicable reporting requirements under
40 CFR, Section 403.12.
(Ord. 1718 § 1, 1983; Ord. 2280 § 3, 1989; Ord. 2707 § 2, 1993)
Where the city's wastewater treatment system achieves consistent
removal of pollutants limited by Federal Pretreatment Standards, the
city may apply to the approval authority for modification for specific
limits in the Federal Pretreatment Standards. "Consistent removal"
shall mean reduction in the amount of a pollutant or alteration of
the nature of the pollutant by the wastewater treatment system to
a less toxic or harmless state in the effluent which is achieved by
the system in 95 percent of the samples taken when measured according
to the procedures set forth in Section 403.7 of Title 40 of the Code
of Federal Regulations, Part 403, "General Pretreatment Regulations
for Existing and New Sources of Pollution" promulgates pursuant to
the Act. The city may then modify pollutant discharge limits in the
Federal Pretreatment Standards of the requirements contained in 40
CFR, Part 403, Section 403.7 are fulfilled and prior approval from
the approval authority is obtained.
(Ord. 1718 § 1, 1983; Ord. 4768 § 2, 2009)
A. Unless
otherwise authorized under a wastewater contribution permit, no person
or user shall discharge wastewater containing in excess of:
20.0 mg/l ammonia;
0.1 mg/l arsenic;
0.01 mg/l beryllium;
240 mg/1 BOD;
0.01 mg/l cadmium;
0.56 mg/l chromium;
0.13 mg/l copper;
0.01 mg/l cyanide;
5.5 mg/l fluoride;
50.0 mg/l hydrocarbon solvents (including total petroleum hydrocarbons
as detected by method M8015);
18 mg/1 iron;
0.04 mg/l lead;
1.1 mg/1 manganese;
0.02 mg/l mercury;
0.31 mg/l nickel;
100.0 mg/l oil and grease;
500.0 mg/l phenol;
0.04 mg/l silver;
0.006 mg/l selenium;
250 mg/1 TSS;
2.0 mg/l TTO (total toxic organics, defined as the sum of all
deleted volatile and semi-volatile organic compounds found in 40 CFR
Part 136 Appendix A, base/neutrals and acids, purgeables, and organochlorine
pesticides and PCBs, excluding phenol);
0.16 mg/l zinc.
B. Where, in the opinion of the director, and in conformance with the city's RWQCB approved local limits allocation program, users may discharge at levels above those specified in Section
14.26.140(A) if sufficient excess capacity exists at the POTW, and the discharge is covered under a wastewater contribution permit.
(Ord. 1718 § 1, 1983; Ord. 2278 § 1, 1989; Ord. 2360 § 4, 1990; Ord. 2707 § 2, 1993; Ord.
4912 § 2, 2011)
State requirements and limitation on discharges shall apply
in any case where they are more stringent than federal requirements
and limitations or those in this chapter.
(Ord. 1718 § 1, 1983)
The city reserves the right to amend this chapter in order to
establish more stringent limitations or requirements on discharges
to the wastewater disposal system if deemed necessary to comply with
the objectives of this chapter.
(Ord. 1718 § 1, 1983)
No user shall 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 in
any other pollutant-specific limitation developed by the city or state.
(Ord. 1718 § 1, 1983)
Pursuant to 40 CFR 403.12(-), the user shall notify, in writing,
the POTW, Cal-EPA, and EPA of any discharge into the POTW of a substance,
which, if otherwise disposed of, would be a hazardous waste under
40 CFR 261.
(Ord. 2707 § 5, 1993)