§ 53.004  DEFINITIONS.
   Unless a provision explicitly states otherwise, the following terms and phrases, as used in this chapter, shall have the meanings hereinafter designated.
   “ACT” or “THE ACT.”  The Federal Water Pollution Control Act, also known as the Clean Water Act, as amended, 33 U.S.C. §§ 1251 et seq.
   “APPROVAL AUTHORITY.”  The approval authority for the City of Noblesville Utilities Department is IDEM.
   “BIOCHEMICAL OXYGEN DEMAND (BOD).”  The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedures for five days at 20° centigrade, usually expressed as a concentration (e.g., mg/L) as defined in the current edition of “Standard Methods.”
   “COLOR.”  The optical density at the visual wave length of maximum absorption, relative to distilled water. One hundred percent (100%) transmittance is equivalent to zero (0.0) optical density.
   “ENVIRONMENTAL PROTECTION AGENCY (EPA).”  The U.S. Environmental Protection Agency or, where appropriate, the Region 5 Water Management Division Director, or other duly authorized official of the agency.
   “GRAB SAMPLE.”  A sample taken on a one-time basis without consideration for flow or time.
   “INSTANTANEOUS MAXIMUM ALLOWABLE DISCHARGE LIMIT.”  The maximum concentration of a pollutant allowed to be discharged at any time, determined from the analysis of any grab sample or composited sample collected, independent of the industrial flow rate and the duration of the sampling event.
   “INTERFERENCE.”  A discharge that, alone or in conjunction with a discharge or discharges from other sources, does one of the following:
      (1)   Inhibits or disrupts the POTW, its treatment processes, or its selected sludge use or disposal methods;
      (2)   Causes a violation of any requirements of the POTW’s NPDES permit, including an increase in the magnitude or duration of a violation; or
      (3)   Prevents the use of the POTW’s sewage sludge or its sludge disposal method selected in compliance with the following statutory provisions, regulations, or permits issued thereunder or more stringent state or local regulations “
         (a)   Section 405 of the Clean Water Act (33 U.S.C. 1345).
         (b)   The Solid Waste Disposal Act (SWDA) (42 U.S.C. 6901), including:
            1.   Title II, more commonly referred to as the Resource Conservation and Recovery Act (RCRA); and
            2.   The rules contained in any state sludge management plan prepared pursuant to Subtitle D of the SWDA (42 U.S.C. 6941).
         (c)   The Clean Air Act (42 U.S.C. 7401).
         (d)   The Toxic Substances Control Act (15 U.S.C. 2601).
   “MAXIMUM ALLOWABLE DISCHARGE UNIT.”  The maximum concentration (or loading) of a pollutant allowed to be discharged at anytime, determined from the analysis of any discrete or composite sample collected, independent or the industrial flow rate and the duration of the sampling event.
   “MEDICAL WASTE.”  Isolation wastes, infectious agents, human blood and blood products, pathological wastes, sharps, body parts, contaminated bedding, surgical wastes, potentially contaminated laboratory wastes, and dialysis wastes.
   “NON-CONTACT COOLING WATER.”  Water used for cooling which does not come into direct contact with any raw material, intermediate product, waste product, or finished product.
   “PASS THROUGH.”  A discharge which exits the POTW into waters of the United States in quantities or concentrations which, alone or in conjunction with a discharge or discharges from other sources, is a cause of a violation of any requirement of the Utility’s NPDES permit, including an increase in the magnitude or duration of a violation.
   “PERSON.”  Any individual, partnership, co-partnership, firm, company, corporation, association, joint stock company, trust, estate, governmental entity, or any other legal entity; or their legal representatives, agents, or assigns. This definition includes all federal, state, and local governmental entities.
   “pH.”  A measure of the acidity or alkalinity of a solution, expressed in standard units of 0-14.
   “POLLUTANT.”  Dredged spoil, solid waste, incinerator residue, filter backwash, sewage, garbage, sewage sludge, munitions, medical wastes, chemical wastes, biological materials, radioactive materials, heat, wrecked or discarded equipment, rock, sand, cellar dirt, municipal, agricultural and industrial wastes, and certain characteristics of wastewater (e.g., pH, temperature, TSS, turbidity, color, BOD, COD, toxicity, or odor).
      (1)   Except as provided in division (2) of this definition, any equipment and technology modifications, process or procedure modifications, reformulation or redesign or products, substitution of raw materials, improvements in housekeeping, maintenance, training, or inventory control, or any other practice that:
         (a)   Reduces the amount of a pollutant entering a waste stream or released to the environment, including fugitive emissions, before recycling, treatment or disposal; and
         (b)   Reduces the hazards to public health and the environment associated with the release of the pollutant.
      (2)   Pollution prevention does not include any practice that alters the physical, chemical, or biological characteristics or the volume of a pollutant through a process or activity that is not integral to add necessary for the production of a product or the providing of a service.
   “PRETREATMENT.”  Pretreatment is the reduction of the amount of pollutants, the elimination of pollutants, or the alteration of the nature of pollutant properties before or instead of discharging the pollutants to the sewerage system.
   “PRETREATMENT STANDARD OR REQUIREMENT.”  A pretreatment standard or requirement will mean any substantive or procedural requirement of this chapter, a categorical pretreatment standard, or a wastewater discharge permit.
   “PROCESS WASTEWATER.”  Any water that during manufacturing or processing comes into direct contact with or results from the production or use of any raw material, intermediate product, finished product, by-product, or waste product.
   “PROHIBITED DISCHARGE STANDARDS OR PROHIBITED DISCHARGES.”  Absolute prohibitions against the discharge of certain substances; these prohibitions appear in § 53.011.
   “PUBLICLY OWNED TREATMENT WORKS (POTW).”  A “treatment works”, as defined by Section 212 of the Act (33 U.S.C. §1292) which is owned by the city. This definition includes any devices or systems used in the collection, storage, treatment, recycling, and reclamation of sewage or industrial wastes of a liquid nature and any conveyances which convey wastewater to a treatment plant. The term also means the municipal entity having jurisdiction over the industrial users and responsibility for the operation and maintenance of the treatment works.
   “SEPTIC TANK WASTE.”  Any sewage from holding tanks such as vessels, chemical toilets, campers, trailers, and septic tanks.
   “SEWAGE.”  Human excrement and gray water (household showers, dishwashing operations, and the like).
      (1)   A user subject to categorical pretreatment standards; or
      (2)   A user that:
         (a)   Discharges an average of 25,000 gpd or more of process wastewater to the POTW (excluding sanitary, noncontact cooling, and boiler blowdown wastewater);
         (b)   Contributes a process wastestream which makes up 5% or more of the average dry weather hydraulic or organic capacity of the POTW treatment plant; or
         (c)   Is designated as such by the Utility on the basis that it has a reasonable potential for adversely affecting the POTW’s operation or for violating any pretreatment standard or requirement.
      (3)   Upon a finding that a user meeting the criteria in division (2) of this definition has no reasonable potential for adversely affecting the POTW’s operation or for violating any pretreatment standard or requirement, the Utility may at any time, on its own initiative or in response to a petition received from a user, and in accordance with procedures in 40 CFR 403.8(f)(6), determine that such user should not be considered a significant industrial user.
   “SLUG LOAD” or “SLUG.”  Any discharge at a flow rate or concentration which could cause a violation of the prohibited discharge standards in § 53.032.
   “STANDARD INDUSTRIAL CLASSIFICATION (SIC) CODE.”  A classification pursuant to the Standard Industrial Classification Manual issued by the United States Office of Management and Budget.
   “STORM WATER.”  Any flow occurring during or following any form of natural precipitation, and resulting from such precipitation, including snowmelt.
   “SUSPENDED SOLIDS.”  Solids in wastewater as defined by the “total suspended solids test” in the current edition of “Standard Methods.”
   “TIME COMPOSITE SAMPLE.”  A sample resulting from the combination of individual samples of equal volume taken at equal intervals of time, without consideration of the volume or rate of flow.
   “UPSET.”  An incident at a user’s facility that: is exceptional, unintentional, and temporary; is caused by factors beyond the reasonable control of the user; and results in non-routine discharges to the sewerage system.
   “USER” or “INDUSTRIAL USER.”  A source of indirect discharge.
   “UTILITY.”  The Utility of Noblesville, Indiana, or the Wastewater Utility of Noblesville, Indiana, or Utilities Department.
   “UTILITY DIRECTOR.”  The person designated by the city to supervise the operation of the POTW, and who is charged with certain duties and responsibilities by this chapter, or a duly authorized representative.
   “WASTEWATER.”  Liquid and water-carried industrial wastes and sewage from residential dwellings, commercial buildings, industrial and manufacturing facilities, and institutions, whether treated or untreated, which are contributed to the POTW.
   “WASTEWATER TREATMENT PLANT OR TREATMENT PLANT.”  That portion of the POTW which is designed to provide treatment of municipal sewage and industrial waste.
   “WASTE MINIMIZATION.”  A reduction of the amount or toxicity of pollutants requiring disposal, including but not limited to:
      (1)   Pollution Prevention;
      (2)   Using a waste from one process as an ingredient in the same or another process;
      (3)   Processing a waste to recover resources; and
      (4)   Treating the waste to reduce its mass, volume, or toxicity.
(Ord. 10-04-12, passed 4-10-12)