925.01 DEFINITIONS.

   As used in this chapter:

   (a)    "Average thirty-day discharge limitation" means the highest allowable arithmetic average of all the determinations of daily concentration made during the thirty- day period. If only one sample is taken in the thirty-day period, its concentration is the thirty-day concentration for that thirty-day period. If more than one sample is taken during one thirty-day period, the average thirty-day concentration is calculated by totaling the daily concentrations for the thirty-day period and dividing by the number of days sampled during that thirty-day period.

   (b)    "Biological oxygen demand" (BOD) means the quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at twenty degrees Centigrade.

   (c)    "Building drain" means that part of the lowest horizontal piping of a drainage system which receives the discharge from soil, waste and other drainage pipes inside the walls of the building and conveys it to the building sewer, beginning three feet (1.0 meters) outside the outside face of the building wall.

   (d)    "Building sewer" means the extension from the building drain to the public sewer or other place of disposal, also called house connection.

   (e)    "Chemical oxygen demand" (COD) means the quantity of oxygen utilized in the chemical oxidation of organic matter under standard laboratory procedures expressed in milligrams per liter.

   (f)    "City" means the City of Oregon, Ohio.

   (g)    "Combined sewer" means a sewer intended to receive both wastewater and storm or surface water.

   (h)    "Compatible pollutant" means a waste constituent which does not interfere with the operation or performance of the wastewater treatment works.

   (i)    "Director" means the Director of Public Service of the City of Oregon or his authorized representative.

   (j)    "Federal Act" means the Federal Water Pollution Control Act Amendments of 1972, Public Law 92-500, and any amendments thereto; as well as any guidelines, limitations and standards promulgated by the U. S. Environmental Protection Agency pursuant to the Act.

   (k)    "Floatable oil" is oil, fat or grease in a physical state such that it will separate by gravity from wastewater by treatment in an approved pretreatment facility.

   (1)    "Garbage" means the animal and vegetable waste resulting from the handling, preparation, cooking and serving of food.

   (m)    "Incompatible pollutant" means a waste constituent which interferes with the operation and performance of the wastewater treatment works.

   (n)    "Industrial wastes" means the wastewater from industries as defined herein.

   (o)    "Industrial user" or "industry" means any nondomestic establishment manufacturing or processing facility that discharges industrial waste to the wastewater treatment plant.

   (p)    "Intercepting sewer" means a sewer intended to receive flows from both combined sewers and sanitary sewers; or a sewer whose primary purpose is to transport wastewater from collector (local) sewers to a wastewater treatment plant.

   (q)    "Maximum daily discharge limitations" means the highest allowable concentration of a pollutant measured during a calendar day or any twenty-four hour period that reasonably represents the calendar for purposes of sampling.

   (r)    "May" is permissive; "Shall" is mandatory.

   (s)    "Natural outlet" means any outlet, including storm sewers and combined sewer overflows, into a watercourse, pond, ditch, lake or other body of surface or groundwater.

   (t)    "NPDES" or "National Pollutant Discharge Elimination System" permit means any permit or equivalent document or requirements issued by the State water pollution control agency to regulate the discharge of pollutants.

   (u)    "Owner" or "person" means any individual, firm, company, industry, association, society, corporation or group.

   (v)    "pH" means the reciprocal of the logarithm of the hydrogen ion concentration. The concentration is the weight of hydrogen ions, in gram atoms, per liter of solution.

   (w)    "Pollutant" means any noxious chemical or other refuse material that impairs the purity of water.

   (x)    "Properly shredded garbage" means the wastes from the preparation, cooking and dispensing of food that have been shredded to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers, with no particles greater than ½ inch (1.27 centimeters) in any dimension.

   (y)    "Pretreatment" means the treatment of wastewater from sources before introduction into the wastewater treatment plant.

   (z)    "Public sewer" means a common sewer controlled by a governmental agency, public utility or public authority.

   (aa)    "Sanitary sewer" means 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.

   (bb)   “Sewer” means a pipe or conduit that carries wastewater or drainage water.

   (cc)   “Slugload” means any pollutant, including oxygen demanding pollutants (BOD, etc.) released in an extraordinary discharge episode of such volume or strength as to cause interference or pass through at a wastewater treatment plant.

   (dd)   “Storm sewer” (sometimes termed “storm drain”) means a sewer for conveying water, groundwater, subsurface water, or unpolluted water from any source.

   (ee)   “Suspended solids” means 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.

   (ff)   “Toxic pollutants” includes but is not necessarily limited to aldrin/dieldrin, benzidine, cadmium, cyanide, DDT-endrin, mercury, polychlorinated biphenyls (PCB’s) and toxaphene. Pollutants included as “toxic” are those promulgated as such by the United States Environmental Protection Agency.   

   (gg)   “Unpolluted water” is water of quality equal to or better than the effluent criteria in effect or water that would not cause violation of the receiving water quality standards and would not be benefitted by discharge to the sanitary sewers and wastewater treatment works provided.

   (hh)   “Wastewater” or “wastes” means 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 ground water, surface water and stormwater that may be present.

   (ii)   “Wastewater treatment plant” or “plant” means that portion of the wastewater treatment works required to treat wastewater and dispose of the effluent.

   (jj)   “Wastewater treatment works” or “works” means the structures, equipment, parcels of land, easements and processes required to collect, carry away and treat wastewater and dispose of the effluent of the City. Wastewater treatment works includes sanitary sewers and intercepting sewers, but does not include storm sewers.
(Ord. 117-1993. Passed 6-14-93.)

USE OF PUBLIC SEWERS REQUIRED