§ 1750-050. PROHIBITED POLLUTED DISCHARGES

A person may not introduce into the Publicly Owned Treatment Works (POTW) any pollutant(s), which cause pass through or interference. Additionally, specific prohibitions are as follows in this section.

(a)

Federal prohibitions. The following pollutants shall not be introduced into a POTW:

(1)

Pollutants which create a fire or explosion hazard in the POTW, including, but not limited to, waste streams with a closed cup flashpoint of less than 140 degrees Fahrenheit or 60 degrees Centigrade using the test methods specified in 40 CFR 261.2.

(2)

Pollutants which will cause corrosive structural damage to the POTW, but in no case, discharges with pH lower than 5.0;

(3)

Solid or viscous pollutants in amounts which will cause obstruction to the flow in the POTW resulting in interference;

(4)

Any pollutant, including oxygen demanding pollutants (BOD, etc.) released in a discharge at a flow rate and/or pollutant concentration which will cause interference with the POTW.

(5)

Heat in amounts which will inhibit biological activity in the POTW resulting in interference, but in no case heat in such quantities that the temperature at the POTW Treatment plant exceeds 104 degrees Fahrenheit (40 degrees Centigrade).

(6)

Petroleum oil, non-biodegradable cutting oil, or products of mineral oil origin in amounts that will cause interference or pass through;

(7)

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;

(8)

Any trucked or hauled pollutants, except at discharge points designated by the POTW.

(b)

No person shall discharge into the sewerage system, natural outlet, street or earth surface, wastes which cause, threaten to cause, or are capable of causing, either alone or by interaction with other substances, any of the following:

(1)

Fire or explosion or injury in any way to the sewerage system or the operation of the treatment plant. Prohibited materials include, but are not limited to, gasoline, kerosene, alcohols, solvents, sulfides or any other substance with a closed cup flashpoint of less than 140 degrees Fahrenheit (or 60 degrees Celsius) using the test methods specified in 40 CFR 261.21 or which causes two consecutive readings on an explosion hazard meter at any point in the sewerage system to be more than 5%, or any single reading more than 10% of the lower explosive limit (LEL);

(2)

Obstruction of flow in a sewerage system or injury of the system or damage to the sewerage collection, or treatment facilities by ashes, cinders, sand, mud, grit, straw, offal, shavings, metal, glass, rags, feathers, tar, plastics, wood, sawdust, manure, garbage that has not been properly shredded and screened to one quarter inch or less in diameter, or other solid or viscous substances capable of causing obstruction of the flow or other interference with the proper operation of the sewerage system as determined by the Director;

(3)

Corrosive structural damage to the sewerage system or the POTW;

(4)

Air pollution by the release of toxic or malodorous gases or malodorous gas-producing substances;

(5)

Interference or pass through at the treatment plant affecting wastewater treatment, land disposal or sludge or scum processing and disposal;

(6)

A detrimental environmental impact or a nuisance in the waters or wastewaters of the state or a condition unacceptable to any public agency having regulatory jurisdiction over the County;

(7)

Discoloration, or any other condition, in the quality of the County's treatment plant effluent and/or storm system discharge in such a manner that receiving water quality requirements established by law or other contracts cannot be met by the County;

(8)

Conditions at or near the County's treatment facilities, which violate any statute, rule, regulation or ordinance of any public agency of state or federal regulatory body;

(9)

Quantities or rates of flow or pollutants which cause interference or overload the County's sewerage system or treatment facilities or cause excessive County collection or treatment costs or hamper treatment facility operation;

(10)

Waters or waste with a pH factor lower than 5.0 or higher than 9.0;

(11)

Any discharge which has an average daily concentration exceeding the local limits as established by the Director to meet the limitations of the NPDES wastewater discharge permit issued to the County.

(12)

Discharges of new or increased contributions of pollutants, or changes in the nature of pollutants, to the POTW by industrial users where such contributions do not meet applicable pretreatment standards and requirements or where such contributions would cause the POTW to violate its NPDES permit per 40 CFR 403.8(f)(1)(i);

(13)

Petroleum oil, non-biodegradable cutting oil, or products of mineral oil origins in amounts that will cause interference or pass through;

(14)

Discharges which, if otherwise disposed of, would be a hazardous waste under 40 CFR Part 261 and/or 22 CCR 66261.3;

(15)

Discharges containing concentrations of tetrachloroethylene (PCE) or trichloroethylene (TCE) exceeding five micrograms per liter for any grab sample;

(16)

Waste radiator coolant or any radiator flushing wastewater generated from auto, truck, or equipment maintenance;

(17)

Wastewater or other wastes from the cleaning of engines, undercarriages or vehicle parts. Such wastes must be either recycled in a closed-loop recycling system or hauled off-site for proper disposal.