The following are some of the industries which require approval by permit before discharging wastewater into public sewers: tanning, metal pickling, metal plating, galvanizing, pulp and paper making, brewing, distilling, public laundering, laundromats, soap making, glue manufacturing, meat and poultry packing, food processing, wool scouring, bleaching and dyeing, munitions manufacturing, slaughtering, dairies, dairy products, sugar refining, fat rendering, manufacture of syrups, jam or jelly, cotton textile manufacture or processing, or any industry producing wastes which may have or may create the aforesaid deleterious effect, hazards, nuisances, or added costs. The process or processes employed in the pretreatment and control, if required, of such wastewater shall in each case be satisfactory to and shall have the approval by permit of the Director as set forth under Article
VII. No permit required pursuant to this section shall be arbitrarily denied.
No person shall discharge or cause to be discharged into the
district sewerage system or sewers tributary thereto, any of the following
materials, substances or wastes:
A. 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 explosive 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, chlorates, perchlorates, bromates, carbides,
hydrides, and sulfides and any other substances which are a fire hazard
or a hazard to the system.
B. Any wastewater having a pH less than 5.0 or greater than 9.5, unless
the POTW is specifically designed to accommodate such wastewater,
or wastewater having any other corrosive property capable of causing
damage or hazard to sewers, structures, equipment or personnel.
C. Solid or viscous substances, in quantities or of such size or state,
which may impair the hydraulic capacity, may cause maintenance difficulties,
or may interfere with the proper operation of the district sewerage
system and sewers tributary thereto, such as, but not limited to,
ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, tar,
plastics, wood, whole blood, paunch manure, feathers, hair and fleshings,
entrails, paper dishes, cups, milk containers, etc., either whole
or macerated.
D. Any liquid or vapor having a temperature higher than 150° F.
(65° C.) or in such quantities that the temperature at the treatment
works influent exceeds 104° F. (40° C.). If, in the opinion
of the Director, lower temperatures of such wastes could harm either
the sewers, sewage treatment process, or equipment, have an adverse
effect on the receiving stream, or could otherwise endanger life,
health or property, or constitute or contribute to a nuisance, the
Director may prohibit such discharges.
E. Waters or wastes containing substances which are not amenable to
treatment or reduction by the POTW processes employed, or are amenable
to treatment only to such a degree that the POTW effluent cannot meet
the requirements of regulatory agencies having jurisdiction over the
discharge to the receiving waters.
F. 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 on the receiving waters
of the POTW, or to exceed the limitation set forth in a Categorical
Pretreatment Standard.
G. 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 process. In no case shall a substance discharged into
the POTW be in noncompliance with sludge use or disposal criteria,
guidelines or regulations developed under Section 405 of the Federal
Water Pollution Control Act, any criteria, guidelines or regulations
affecting sludge use or disposal development pursuant to the Solid
Waste Disposal Act, or state criteria applicable to the sludge management
method being used.
Upon the promulgation of the Federal Categorical Pretreatment
Standards for a particular industrial subcategory, the federal standard,
if more stringent than limitations imposed under these rules and regulations
for sources in that subcategory, shall immediately supersede the limitations
imposed under these rules and regulations. The Director shall notify
all affected users of the applicable reporting requirements under
40 CFR 403.12.
State requirements and limitations on discharges shall apply
in any case where they are more stringent than federal requirements
and limitations or those in these rules and regulations.
No user shall increase the use of process or, in any way, attempt
to dilute a discharge as a partial or complete substitute for adequate
pretreatment to achieve compliance with the standards, or any pollutant-specific
limitation by the District or state.