§ 115-3. Discharge prohibitions., Chapter 115. INDUSTRIAL PRETREATMENT REGULATIONS, Code of Ordinances, Rockwood

In addition to the general discharge prohibition set forth in Subsection A above, a user may not contribute the following substances to any POTW:

(1)

Combustible pollutants. 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. Pollutants which create a fire or explosion hazard in the treatment plant, including but not limited to, waste streams with a closed cup flashpoint of less than 140° F. or 60° C. using the test methods specified in 40 CFR 261.21. At no time shall two successive readings on an explosion hazard meter, at the point of discharge into the system (or at any point in the system), be more than 5% nor shall any single reading be over 10% of the lower explosive limit (LEL) of the meter. Examples of these materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides, sulfides, chlorinated hydrocarbons, phenolic compounds and other substances which the city, the state or the EPA has notified the user is a fire hazard or a hazard to the system.

(2)

Solid pollutants. Solid or viscous substances which may cause obstruction to the flow in a sewer or other interference with the operation of the wastewater treatment facilities, such as, but not limited to, fat, grease, garbage with particles greater than 1/2 inch in any dimension, animal guts or tissues, paunch manure, bones, hair hides or 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, wastepaper, wood, plastics, gas, tar, asphalt residues, residues from refining or processing of fuel or lubricating oil, or glass grinding or polishing waste, petroleum oil, nonbiodegradable oil, or products or mineral oil in amounts that will cause interference or pass through.

[Amended 5-1-2002 by Ord. No. 407]

(3)

Minimum pH. Any wastewater having a pH less than 5.0, unless the POTW is specifically designed to accommodate such wastewater, or wastewater having any other corrosive property capable 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, which would create a toxic effect in the receiving waters of the POTW exceeding the limitations set forth in a categorical pretreatment standard. A toxic pollutant shall include, but not be limited to, any pollutant identified pursuant to Section 307(a) of the Act.

(5)

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.

(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 re-use 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; with any criteria, guidelines or regulations affecting sludge use or disposal developed pursuant to the Solid Waste Disposal Act, the Clean Air Act or the Toxic Substances Control Act; or with state criteria applicable to the sludge management method being used.

(7)

Any substance which will cause the POTW to violate its NPDES and/or state disposal system permit or the receiving water 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° C. (104° F.).

(10)

Any pollutants, including oxygen demanding pollutants (BOD, etc.), released at a flow rate and/or pollutant concentrations which, either singly or by interaction with other pollutants, will cause interference with the POTW. In no case shall a slug load have a flow rate or contain concentrations or quantities of pollutants that exceed, for longer than 15 minutes, more than five times the average twenty-four-hour concentrations, quantities or flow during normal operation.

(11)

Any wastewater containing any radioactive wastes or isotopes of such a half life or concentration as may exceed limits established by the Superintendent in compliance with applicable state or federal regulations.

(12)

Any substance which causes a hazard to human life or creates a public nuisance.

(13)

Any substance which violates any standards or conditions of any statute, rule, regulation or ordinance of any public agency, including, but not limited to, this chapter, the EPA, or MDEQ.

(14)

Contents of septic, vehicular or marine holding tanks or other similar facilities, or any discharge of trucked or hauled pollutants cannot be released to the POTW except at the location designated in the confines of the treatment plant and under the conditions and provisions established by the Superintendent.