Unless the context specifically indicates otherwise, the meaning of terms used in this chapter shall be as follows:
ACT. The Federal Water Pollution Control Act of 1972 as amended by the Clean Water act of 1977 and any amendments thereto; as well as any guidelines, limitations and standards promulgated by the U.S. EPA pursuant to the act.
authority or CONTROL authority. The City of Washington, Washington Court House, Ohio
BIOCHEMICAL OXYGEN DEMAND (BOD). The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedures in five days at 20° C, expressed in mg/L.
CATEGORICAL PRETREATMENT STANDARDS. National Pretreatment Standards as promulgated by U.S. EPA specifying quantities or concentrations of pollutants or pollutant properties which may be discharged or introcuced into the POTW by specific Industrial Dischargers.
CHARGE, DEPT SERVICE. The charge levied on users to make principal and interest payments required for the amortization of the cost of the POTW.
CHARGE, SEWER SERVICE. The charge levied on users for the capital cost amortization (debt service charge) and for operation and maintenance costs (user charges). Such sewer service charge includes debt service charges and user charges.
CHARGE, USER. The charge levied on the users of the POTW for the cost of operating and maintaining such works, pursuant to Section 204(b) of Title VI of the act and amendments thereto.
SURCHARGE. An additional cost paid by a user outside the corporate limits of the city, or by a user for discharging wastewater to the POTW stronger than normal domestic sewage.
CHEMICAL OXYGEN DEMAND (COD). The quantity of oxygen utilized in the oxidation of organic matter under standard laboratory procedures expressed in milligrams per liter.
COMMERCIAL UNIT. A building or part of a building used by one commercial, private or public enterprise for uses other than as a dwelling.
CONCENTRATION, AVERAGE. The average of four consecutive day, 24-hour flow-proportioned composite samples, individually analyzed and reported, and averaged for the four days.
CONCENTRATION, MAXIMUM. The maximum daily concentration.
COOLING WATER. The water discharged from any use such as air conditioning, cooling or refrigeration, during which the only pollutant added to the water is heat.
DISCHARGE UNIT. Any residence, commercial establishment, industry or private or public facility generating, accumulating and/or otherwise discharging liquid waste either directly or indirectly into the POTW.
DRAIN, BUILDING. That part of the lowest horizontal piping of a drainage system which receives the discharge from the soil, waste, and other drainage pipes inside the walls of the building and conveys it to the building sewer, which begins five feet (1.5 meters) outside the inner face of the building wall.
DRAIN, STORM, (sometimes termed STORM SEWER). A drain or sewer for conveying water, groundwater, surface water or unpolluted water from any source.
DWELLING UNIT. A building or part of a building used by one family, exclusively, as a place of abode.
FLOATABLE OIL. Oil, fat or grease in a physical state such that it will separate by gravity from wastewater by treatment in a pretreatment facility approved by the city.
GARBAGE. The animal and vegetable waste resulting from the handling, preparation, cooking and serving of food.
INDIRECT DISCHARGE. The discharge or introduction of nondomestic pollutants from a source regulated under Section 307(b) or (c) of the ACT, into a POTW.
INDUSTRIAL USER. Any nondomestic user who discharges an effluent into a POTW from any source regulated under 307(b), (c) and (d) of the act. INDUSTRIAL USER shall be classified further into one of three groups depending upon the nature of their SiC and wastewater constituency. This determination shall be made by the Superintendent oF the Pretreatment Coordinator.
(1) SIGNIFICANT INDUSTRIAL DISCHARGER (SID).
(a) Except as provided in subdivision (b) below:
1. All industrial users subject to categorical pretreatment standards; and,
2. Any other industrial user that: discharges an average of 25,000 gallons per day or more of process wastewater to the POTW; contributes a process wastestream which makes up five percent or more of the average dry weather hydraulic or organic capacity of the POTW treatment plant; or has a reasonable potential, in the opinion of the Service Director, to adversely affect the POTW's operation or for violating any pretreatment standard or requirement.
(b) The Director may at any time, on his own initiative, or in response to a petition received from an industrial user, determine that a noncategorical industrial user is not a significant industrial user if the user has no reasonable potential to adversely affect the POTW's operation or for violating any pretreatment standard or requirement.
(2) MINOR SIGNIFICANT DISCHARGER (MSD). An industrial user who:
(a) Whose individual discharges do not significantly impact the treatment system, degrade receiving water quality, or contaminate sludge.
(b) Has the potential to have a significant impact on the wastewater system if a spill occurs.
(c) Could have a significant impact on the wastewater system if their wastes, in combination with other wastes, would form a potentially problem material or substance.
(3) INSIGNIFICANT INDUSTRIAL DISCHARGER (IID). An industrial user who does not discharge any nondomestic wastewater to the POTW system.
INDUSTRIAL WASTES. The wastewater from industrial processes, trade, or business as distinct from domestic or sanitary wastes.
INDUSTRIAL WASTE PERMIT. A permit issued by the city to industrial users for the right to discharge nondomestic wastewater into the POTW system provided conditions in the permit for monitoring, reporting, and waste strength limitations are met. Industrial waste permits are valid for a period of five years or subject to change whenever significant changes occur in the discharge from the industrial user as determined by the Superintendent or Pretreatment Coordinator.
INTERFERENCE. A discharge which, alone or in conjunction with a discharge or discharges from other sources, both inhibits or disrupts the POTW, its treatment processes or operations, or its sludge processes, use or disposal; and, therefore is a cause of a violation of any requirement of the POTW's NPDES Permit (including an increase in the magnitude or duration of a violation) or of the prevention of sewage sludge use or disposal.
MAY. Is permissive.
NATURAL OUTLET. Any outlet, including storm sewers and combined sewer overflows, into a watercourse, pond, ditch, lake or other body of surface or ground water.
NEW SOURCE. Any building, structure, facility or installation from which there is or may be a discharge of pollutants, the construction of which commenced after the publication of proposed pretreatment standards under section 307 (c) of the ACT which will be applicable to such source if such standards are thereafter promulgated in accordance with that section, provided that:
(1) The building, structure, facility or installation is constructed at a site at which no other source is located; or
(2) The building, structure, facility or installation totally replaces the process or production equipment that causes the discharge of pollutants at an existing source; or
(3) The production or wastewater generating processes of the building, structure, facility or installation are substantially independent of an existing source at the same site.
NORMAL DOMESTIC SEWAGE. Water-carried wastes from residences, commercial buildings, institutions, and industries (excluding industrial wastes), together with any groundwater, surface water or storm water that may be naturally introduced into the POTW. The strength of normal domestic sewage shall be defined as follows:
pH | 6.5 to 9.0 S.U. |
...and, | Less than or equal to: |
BOD5 | 300 mg/L |
Total Suspended Solids | 250 mg/L |
Total Nitrogen | 40 mg/L |
Total Phosphorous | 10 mg/L |
Oil and Grease | 100 mg/L |
NPDES PERMIT. The National Pollutant Discharge Elimination System permit issued to the POTW by the Ohio EPA.
O & M COSTS. All costs associated with the operation, maintenance and management of the POTW as well as costs associated with periodic replacement of equipment necessary maintain treatment capacity and NPDES permit performance.
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 POTW's NPDES Permit (including an increase in the magnitude or duration of a violation).
PERSON. Any individual, firm, company, association, society, corporation, or group.
pH. The logarithm of the reciprocal of the hydrogen ion concentration in moles per liter at a given temperature. The pH of neutral water is 7.0 at 25°C which equals a hydrogen ion concentration of 10^(-7) moles per liter.
POLLUTANT. Any substance in the wastewater that is in greater concentration than that in the city's potable water supply.
POLLUTANT, COMPATIBLE. Any substance for which the POTW is designed to treat, including BOD, suspended solids, pH, nitrogen, oil & grease and fecal coliform.
POLLUTANT, INCOMPATIBLE. Any substance which is not compatible as defined in POLLUTANT, COMPATIBLE.
POLLUTANT, TOXIC. Any substance listed in Appendix I to this chapter.
POTW. A sewage treatment works and the sewers and conveyance appurtenances discharging thereto, owned by the city (publicly owned treatment works).
PRETREATMENT. The reduction of the amount of pollutants, or elimination of pollutants, or alteration of the nature of pollutant properties in wastewater to meet normal domestic sewage criteria or categorical standards prior to discharge to the POTW.
PRETREATMENT COORDINATOR. The person designated by the Superintendent to be in responsible charge of the city's municipal/industrial pretreatment program (MIPP).
PROPERLY SHREDDED GARBAGE. Garbage that has been shredded to such a degree that all particles will be carried freely under flow conditions normally prevailing in the POTW sewers, with no particle greater than ½ inch in any dimension.
SEWAGE. Water-carried wastes from residences, commercial buildings, institutions, and industries (excluding industrial wastes), together with any groundwater, surface water or storm water that may be naturally introduced into the POTW.
SEWER, BUILDING. The extension from the building drain to the POTW sewer or other place of disposal. Also referred to as house connection.
SEWER, COMBINED. A sewer intended to receive both wastewater and storm water.
SEWER, PUBLIC. A sewer connected to the POTW system.
SEWER, SANITARY. A sewer that conveys water-carried wastes from residences, commercial buildings, institutions and industry together with minor amounts of groundwater, storm water and surface water that are not admitted intentionally.
SEWER, STORM. A sewer that carries storm water and surface water, street wash and other wash waters, or drainage, but excludes domestic wastewater and industrial wastes. Also called STORM DRAIN.
SHALL. Is mandatory.
SLUG. The discharge of any pollutant at a flow rate and/or pollutant concentration that will cause "interference" with the POTW. Also called a SLUG LOAD.
STATE. The State of Ohio.
STORM WATER. The excess water running off from the surface of a drainage area during and immediately after a period of rain, or from other precipitation.
SUPERINTENDENT. The person in responsible charge of the city's water pollution control facility or his authorized representative. Said person shall be certified by the state as a Class III or IV Wastewater Operator.
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 "Standards Methods for the Examination of Water and Wastewater" and is referred to as "Non-filterable Residue" or "TSS".
TOTAL TOXIC ORGANICS (TTO). The summation of all quantifiable values greater than 0.01 mg/L for the organics listed in Appendix I of this chapter.
UNPOLLUTED WATER. Water of a quality equal to or better than receiving water quality standards and would not be further purified by passing through the POTW treatment facility.
UPSET. An exceptional incident in which an industrial user unintentionally and temporarily is in a state of noncompliance with the standards set forth in the Federal Categorical Pretreatment Standards, or the local limits set in the industrial waste permit due to factors beyond the reasonable control of the industrial user, and excluding noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation thereof.
WASTEWATER. The used water and water-carried wastes from a community that flow to a POTW. Storm water, surface water and groundwater infiltration must also be included in the wastewater that enters a POTW.
(Ord. 6-94, passed 4-27-94)