8-4-1.1 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 Publicly-Owned Treatment Works (POTW) or to the operation of the POTW. At no time shall 2 successive readings on any explosion 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, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides and sulfides, and any other substances which the POTW, the State, or EPA has notified the user is a fire hazard or a hazard to the system.
8-4-1.2 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: grease, garbage with particles greater than ½" 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, waste paper, wood, plastics, gas, tar, asphalt residues, residues from refining or processing of fuel or lubricating oil, mud or glass, grinding or polishing wastes, and other like or similar materials.
8-4-1.3 Any wastewater having a pH less than 5.0 or more than 9.0, or wastewater having any other corrosive property capable of causing damage or hazard to structures, equipment, and/or personnel of the POTW.
8-4-1.4 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 in the receiving waters of the POTW, to contaminate the sludge of any POTW systems, or to exceed the limitation set forth in a Categorical Pretreatment Standard. A toxic pollutant shall include, but not be limited to, any pollutant identified pursuant to the Federal Water Pollution Control Act, 33 U.S.C. 1251, Section 307(a), as amended from time to time, or state law or regulation.
8-4-1.5 Any noxious or malodorous liquids, gases or solids which, either singly or by interaction with other wastes, are sufficient to prevent entry into the sewers for maintenance and repair.
8-4-1.6 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 reuse or to interfere with the reclamation process. In no case shall a substance discharged to the POTW cause the POTW to be in non-compliance with the sludge use or disposal criteria, guidelines, or regulations affecting sludge use or disposal.
8-4-1.7 Any substance which will cause the POTW to violate its NPDES permit or the receiving water quality standards.
8-4-1.8 Any wastewater with objectionable color not removable in the treatment process, including, but not limited to, dye wastes and vegetable tanning solutions.
8-4-1.9 Any pollutants, including oxygen-demanding pollutants (BOD, etc.) which a user knows or has reason to know will cause interference to the POTW. In no case shall a slug load have a flow rate or contain concentrations or quantities of pollutants that exceed for any time period longer than 15 minutes more than 5 times the average 24-hour concentration, quantities or flow during normal operation.
8-4-1.10 Any wastewater containing any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the District in compliance with applicable State Rules and Regulations Pertaining to Radiological Control, published by the Department of Health, State of Colorado.
8-4-1.11 Any wastewater which causes a hazard to human life or creates a public nuisance and is not contained in the wastewater system.
8-4-1.12 Any wastewater having a temperature which will cause the temperature of the influent to the wastewater treatment plant to exceed 104 o F. and/or inhibit the biological activity in the POTW.
8-4-1.13 Any water or waste which contains grease or oil or any other substances that will solidify or become discernibly viscous at temperatures between 32o F. (0 o C.) and 150 o F. (65.5 o C.).
8-4-1.14 Any water or waste containing free, floating or insoluble oil.
8-4-1.15 Wastes from septic tank pumpage or vaults except at locations permitted in writing by the District.
8-4-1.16 Waters containing garbage that has not been ground or comminuted to such a degree that all particles will be carried freely in suspension under conditions normally prevailing in public sewers. Solid particles shall be no more than ½" in any dimension.
8-4-1.17 Unusual concentrations of dissolved solids.
8-4-1.18 Any wastewater containing BOD, total solids, or suspended solids of such character and quantity that unusual attention or expense is required to handle such materials at the wastewater treatment plant; provided, however, that a user may be permitted by specific, written agreement with the POTW, which agreement to discharge such BOD or TSS may provide for special charges, surcharges, payments or provisions for treating and testing equipment.
8-4-1.19 Ammonia nitrogen, phosphorus or phosphate containing compounds (excluding cleaning compounds), or substances readily converted thereto, in amounts that would cause the POTW to fail to comply with its NPDES permit.
8-4-1.20 Any materials which would present a health risk to plant personnel, or cause the need for unusual protective equipment or precautions under normal work conditions.
8-4-1.21 Any material or substance not specifically mentioned in this Section which in itself is corrosive, irritating or noxious to human beings and animals, or which by interaction with other water or waste in the public sewer system could produce undesirable effects or create any other condition deleterious to structures, treatment processes, and quantity of the receiving stream.
8-4-1.22 Any material or substance which would interfere with the treatment process.