No discharger shall contribute or cause to be discharged, directly or indirectly, any of the following described substances to SMDD sewage treatment plant.

A. Any liquids, solids or gases which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction to cause fire or explosion or be injurious in any other way to the operation of the POTW or the integrity of the sewer system or cause a danger to the public health or safety. This prohibition includes but is not limited to wastestreams with a closed cup flash point of less than one hundred forty degrees Fahrenheit or sixty degrees Centigrade.

B. Any solid or viscous substances which will or may cause obstruction to the flow in a sewer or other interference with the operation of the wastewater system.

C. Any wastewater having a pH less than 5.0 / above 10.00 or having any other corrosive property capable of causing damage or hazard to structures, equipment, or personnel of the system, or interference with the operation of the wastewater treatment plant.

D. Any wastewater containing hazardous substances, toxic, conventional, or nonconventional pollutants in sufficient quantity, either singly or by interaction, which could injure or interfere with any wastewater treatment process, constitute a health or safety hazard to humans or animals.

E. Any noxious or malodorous liquids, gases or solids which, either singly or by interaction, are capable of creating a public nuisance or hazard to life or are sufficient to prevent entry into the sewers without special hazardous material protective equipment or clothing for their maintenance and repair.

F. Any substance which may cause the SMDD effluent or treatment residues, biosolids or scums to be unsuitable for reclamation and reuse or which may interfere with such reclamation and reuse.

G. Any substances which will inhibit the operation or performance of the SMDD treatment plant or pass through the system and cause the STW to violate any requirements of any discharge permit issued by governments.

H. Any substance with objectionable color not removed in the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions.

I. Any wastewater having a temperature which will inhibit biological activity in the SMDD treatment plant resulting in interference; but in no case, wastewater with a temperature at the introduction into the SMDD Treatment Plant which exceeds forty degrees Celsius.

J. Any slugload, which shall mean any pollutant, including oxygen demanding pollutants (BOD, etc.), released in a single extraordinary discharge episode of such volume or strength as to cause interference to the STW.

L. Any wastewater containing any radioactive wastes or isotopes of such half-life or concentration as to exceed limits established by government regulations.

M. Any wastewater which causes the STW effluent to exhibit toxicity to test organisms in a standard biological toxicity test as defined by municipality requirements, or which the city determines would be toxic to or impede the treatment capabilities of the biological processes in the wastewater treatment plant.

N. Any petroleum oil, nonbiodegradable cutting oil or products of mineral oil origin that will cause interference or pass through the wastewater treatment plant.

O. Any wastewaters, wastes or pollutants that are delivered to the STW by truck or other means of surface transport, except at discharge points as are designated by the city.