No person shall discharge or cause to be discharged into any County sewer or sewer tributary thereto any stormwater, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water or unpolluted industrial process waters except as provided in Article
IV of these rules and regulations.
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 Director that such wastes can harm either the
trunk sewer system structures, sewage treatment process or equipment,
have an adverse effect on the receiving stream or could otherwise
endanger life, limb, public property or constitute a nuisance. In
forming his/her opinion as to the acceptability of these wastes, the
Director will give consideration to such factors as the quantities
of subject wastes in relation to flows and velocities in the sewers,
materials of construction of the sewers, nature of the sewage treatment
process, capacity of the sewage treatment facilities, degree of treatability
of wastes in the plant and other pertinent factors. The substances,
materials or wastes prohibited in the first instance but subject to
review by the Director are:
A. Any water or waste containing fats, wax, grease or oils, whether
emulsified or not, in excess of 100 mg/l, or containing substances
which may solidify or become viscous at temperatures between 32°
F. and 150° F. (0° C. and 65° C.).
B. Any garbage that has not been properly shredded. The installation
and operation of garbage grinders equipped with a motor of 3/4 horsepower
or greater shall be subject to the review and approval of the Director.
No more than 30% of ground garbage, on the dry basis, shall pass a
No. 40 U.S. Standard sieve.
C. Any waters or wastes containing strong acid metal pickling wastes,
or concentrated plating solutions, whether neutralized or not.
D. Any waters or wastes containing iron, chromium, copper, zinc and similar objectionable or toxic substances. See Article
VI.
E. Any waters or wastes containing phenols or other taste- or odor-producing
substances, in concentrations exceeding limits which may be established
by the Director as necessary, after treatment of the composite sewage
to meet the requirements of the state, federal or other public agencies
of jurisdiction for such discharge to the receiving waters.
F. Any radioactive wastes or isotopes of such half-life or concentration
as may exceed limits established by the Director in compliance with
applicable state or federal regulations.
G. Materials which exert or cause:
(1) Unusual concentrations of inert suspended solids, such as, but not
limited to, Fuller's earth, lime slurries and lime residues; or of
dissolved solids, such as, but not limited to, sodium chloride and
sodium sulfate.
(2) Excessive discoloration at the treatment plant or in the receiving
waters, such as, but not limited to, dye wastes and vegetable tanning
solutions.
(3) Unusual biochemical oxygen demand (BOD), chemical oxygen demand (COD) or chlorine requirements in such quantities as to constitute a significant additional load on the sewage treatment works, except as provided for under Article
VII.
H. Waters or wastes containing substances which are not amenable to
treatment or reduction in concentration by the sewage treatment plant
processes employed, or are amenable to treatment only to such a degree
that the sewage treatment plant effluent cannot meet the requirements
of regulatory agencies having jurisdiction over discharge to the receiving
waters.
If any waters or wastes are discharged or are proposed to be discharged to the County sewerage system or sewers tributary thereto, which waters contain the substances or the characteristics enumerated in §
233-12, and which, in the judgment of the Director, may have a deleterious effect upon the sewerage works, processes, equipment or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the Director may:
A. Reject the waters or wastes;
B. Require pretreatment to an acceptable condition for discharge to
the public sewers;
C. Require control over the quantities and rates of discharge; and/or
D. Require payment to cover the added cost of handling and treating
the waters or wastes not covered by existing taxes or sewer charges.