§ 52.20  DEFINITIONS.
   For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   ADMINISTRATOR.  The Village Administrator of the Village of Oak Harbor, Ohio.
   BIOCHEMICAL OXYGEN DEMAND (BOD).  The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at 20° C.
   COMBINED SEWER.  A sewer intended to receive both wastewater and storm or surface water.
   COMPATIBLE POLLUTANT.  A waste constituent which does not interfere with the operation or performance of the wastewater works.
   DIRECTOR.  The Director of the Environmental Protection Agency, or any person authorized to act for him or her.
   ENVIRONMENTAL PROTECTION AGENCY.  The United States Environmental Protection Agency, or any person authorized to act for that agency.
   INCOMPATIBLE POLLUTANT.  A waste constituent which interferes with the operation and performance of the wastewater treatment works.
   INDUSTRIAL COST RECOVERY (ICR).  Recovery by the village from the industrial users of the treatment works of the grant amount allocable to the treatment of wastes from such users.
   INDUSTRIAL WASTES.  The wastewater from industries, as defined herein.
   INDUSTRY.  A manufacturing activity identified as a “Division A, B, D, E or I” industry, as defined in the office of Management and Budget's Standard Industrial Classification Manual, 1972 edition, as amended and supplemented.
   INTERCEPTING SEWER.  A sewer intended to receive flows from both combined sewers and sanitary sewers.
   MAINTENANCE.  Upkeep and repair costs required to maintain the wastewater treatment works structures and equipment in efficient operating condition during the service life of such works.
   MAJOR CONTRIBUTING INDUSTRY.  An industry contributing greater than 10% of the design flow or design pollutant loading of the wastewater treatment works.
   MAY is permissive; SHALL is mandatory.
   NPDES PERMIT.  Any permit or equivalent document or requirements issued by the state water pollution control agency to regulate the discharge of pollutants from the wastewater treatment works.
   OPERATION.  Any physical and mechanical actions, processes or functions required to efficiently operate the wastewater treatment works as defined herein.
   OWNER or PERSON.  Any individual, firm, company, industry, association, society, corporation or group.
   pH.  The reciprocal of the logarithm of the hydrogen ion concentration.  The concentration is the weight of hydrogen ions, in grams, per liter of solution.
   POLLUTANT.  Any noxious chemical or other refuse material or constituent that impairs the purity of water.
   PRETREATMENT.  The treatment of wastewater from sources before introduction into the wastewater treatment works.
   REPLACEMENT.  Expenditures for obtaining and installing equipment, accessories or appurtenances necessary to retain design capacity and performance of the wastewater treatment works throughout the village's jurisdiction.
   SANITARY SEWER.  A sewer that carries liquid and water-carried wastes from residences, commercial buildings, industries and institutions, together with minor quantities of ground, storm and surface waters that are not admitted intentionally.
   SANITARY SEWER CHARGES.  The aggregate of rate increments established by three separate revenue systems: user charges, industrial cost recovery (ICR) and debt service charges.
   SEWER.  A pipe or conduit that carries wastewater or drainage water.
   SLUG DISCHARGES.  Wastes at a flow rate or pollutant discharge rate which is excessive over relatively short time periods so that there is a treatment process upset and subsequent loss of treatment efficiency.
   STORM SEWER.  A sewer for conveying water, ground water, subsurface water or unpolluted water from any source.
   SUSPENDED SOLIDS.  Total suspended matter that either floats on the surface of or is in suspension in water, wastewater or other liquids, and that is removable by laboratory filtering as prescribed in Standard Methods for the Examination of Water and Wastewater and referred to as nonfilterable residue.
   USER CHARGE.  A charge levied on users of the wastewater treatment works for the cost of operation and maintenance of such works.
   USER CLASS.  Any class of users of the wastewater works, as defined in § 52.25.
   VILLAGE.  The Village of Oak Harbor, Ohio.
   WASTEWATER or WASTES.  The spent water of a community.  From the standpoint of source, it may be a combination of the liquid and water-carried wastes from residences, commercial buildings, industries and institutions, together with any groundwater, surface water and stormwater that may be present.
   WASTEWATER TREATMENT PLANT.  That portion of the wastewater treatment works of the village required to treat wastewater and dispose of the effluent.
   WASTEWATER TREATMENT WORKS or WORKS.  The structures, equipment and processes required to collect, carry away and treat wastewater and dispose of the effluent of the village.  Wastewater treatment works shall include sanitary sewers, combined sewers and intercepting sewers, but shall not include storm sewers.
(Ord. 678, passed 9-7-76)