(a) Prohibited Substance. No user shall contribute or cause to be contributed, directly or indirectly, any pollutants which by nature or concentration will pass through or cause interference. A user shall not contribute any of the following described substances into any sanitary or storm sewer.
(1) Pollutants which create a fire or explosion hazard in the POTW, including, but not limited to wastestreams with a closed cup flashpoint of less than 140° F. or 60° C. using the test method specified in 40 CFR 261.21
(2) Solid or viscous substances which may cause obstruction to the flow in a sewer or other interference with the operation of the POTW such as, but not limited to: grease, garbage with particles greater than one-half inch in any dimension, animal guts or tissues, paunch manure, bones, hair, hides or fleshing, entrails, whole blood, feathers, ashes cinders, sand, spent lime, stone or marble, dust, metal, glass, straw, shavings, grass clippings, rages, spent grains, spent hops, waste paper, wood, plastic, gas, tar, asphalt, residues, residues from refining or processing of fuel or lubricating oil, mud, or glass-grinding or polishing wastes.
(3) Any wastewater having a pH less than 5.5 or higher than 10.0, or having any other corrosive property capable of causing damage or hazard to structures, equipment or personnel of the system.
(4) Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction, to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, or create a hazard in the receiving water of the sewage system.
(5) Any noxious or malodorous liquids, gases or solids, which either singly or by interaction with other wastes, are capable of creating a public nuisance or hazard to life, or may be sufficient to prevent entry into a sewer for its maintenance and repair, or 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 treatment residues, sludges or scums to be unsuitable for reclamation and reuse or to interfere with the reclamation process.
(7) Any substance which will cause the POTW to violate its NPDES or other disposal system permits.
(8) Any substance 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 slug load, which means any pollutant, released in a single extraordinary discharge episode of such volume or strength as to cause interference to the POTW.
(11) Any unpolluted water including, but not limited to, noncontract cooling water.
(12) Any wastewater containing any radioactive wastes or isotopes of such half-life or concentration as exceed limits established by the POTW or OEPA in compliance with applicable State or Federal regulations.
(13) Petroleum oil, nonbiodegradable cutting oil or products of mineral oil origin in amounts that will cause interference at the POTW.
(14) Any waters or wastes containing strong acid wastes or concentrated plating solutions, unless pretreated.
(15) Abnormal concentrations of inert suspended solids, such as, but not limited to, Fullers earth, lime slurries and lime residue, or of inert dissolved solids, such as, but not limited to, sodium chloride, calcium chloride and sodium sulfate from ion exchange softeners.
(b) Limitation of Wastewater Strength.
(1) National Categorical Pretreatment Standards. Upon the promulgation of Federal Categorical Pretreatment Standards for a particular industrial subcategory, the Federal standard, if more stringent than limitations imposed under this Chapter for sources in that subcategory, shall immediately supersede the limitations imposed under this Chapter. The POTW shall notify all affected users of the applicable reporting requirements under 40 CRF, 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 this Chapter.
(2) New Source Pollution Control Equipment Start-Up. New sources shall install and have in operating condition, and shall start up all pollution control equipment required to meet applicable pretreatment standards before beginning to discharge. Within the shortest feasible time, not to exceed ninety day, new sources must meet all applicable pretreatment standards.
(3) State and Federal Requirements. State and Federal requirements and limitations on discharges to the POTW shall be met by all dischargers which are subject to such standards in any instance in which they are more stringent than the city requirements and limitations in this or any other applicable Chapter.
(4) Dilution. No user shall increase the use of potable or process water in any way, nor mix separate waste streams, for the purpose of diluting a discharge as a partial or complete substitute for adequate treatment to achieve compliance with the standards set forth in this Chapter or with any applicable categorical pretreatment standards.
(5) Supplementary Limitations. No user shall discharge wastewater containing concentrations of the following enumerated materials exceeding the following values except as otherwise indicated:
Material | Limitation (mg/l) |
Aluminum | 15 |
Ammonia (N) | 50 |
Arsenic | 100 ug/l |
Cadmium | 3.0 |
Chlorine requirement | 3.0 |
(defined as the amounts of chlorine in mg/l which shall be added to produce as residual of 0.1 mg/l after a contact period of fifteen minutes) | |
Chlorine residual | 1.0 |
Chromium (total) | 7.5 |
Chromium (hexavalent) | 1.7 |
Copper (Cu) | 1.7 |
Cyanide | 100 ug/l |
Iron | 15 |
Lead | 4.6 |
Mercury | 0.3 ug/l and BMPs |
Nickel | 4.0 |
Phenols | 0.5 |
Selenium | 16.0 |
Silver | 0.48 |
Zinc | 7.5 |
(Ord. 2016-9. Passed 2-25-16.)
(6) Special Agreements. No statement contained in this subsection (b) shall be interpreted as preventing any special agreement or arrangement between the City and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the POTW for treatment. In all such cases, the provisions set forth in Chapter 913 which is incorporated herein by reference establishing user charges will be the governing factors in any contract entered into.
(c) The Director may develop Best Management Practices (BMP's) by ordinance or in individual wastewater discharge permits to implement local limits and the requirements of Section 925.05.
(1) Best Management Practices (BMP's) are hereby defined as an enforceable limit. No discharges shall fail to comply with the BMP requirements in their wastewater discharge permit as issued in accordance with Section 925.07
.
(d) Accidental Discharges.
(1) Each discharger shall provide protection from accidental discharge of prohibited or regulated materials or substances established by this Chapter. Where necessary, facilities to prevent accidental discharge of prohibited material shall be provided and maintained at the discharger's cost and expense. Detailed plans showing facilities and operating procedures to provide this protection shall be submitted to the Director of Public Service for review and acceptance before construction of the facility. Review and acceptance of such plans and operating procedures shall not relieve the discharger from the responsibility to modify its facility, as necessary, to meet the requirements herein.
(2) Dischargers shall notify the POTW immediately upon the occurrence of a slug load, or accidental discharge of substances prohibited by this Chapter. The notification shall include location of discharge, date and time thereof, type of waste, concentration and volume and corrective actions. Any user who discharges a slug load shall be liable for any expense, loss or damage to the POTW, in addition to any penalties set forth hereinafter.
(3) Signs shall be permanently posted in conspicuous places on discharger's premises, advising employees whom to call in the event of a slug or accidental discharge. Employers shall instruct all employees who may cause or discover such a discharge with respect to an emergency notification procedure.
(Ord. 2010-32. Passed 9-23-10.)