For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning. Definitions not found in this subchapter may be found in 40 C.F.R. Chapter I, Subchapter N.
ACT. Federal Water Pollution Control Act, also known as the Clean Water Act, as amended 33 U.S.C. §§ 1251 et seq.
BEST MANAGEMENT PRACTICE or BMPs. Schedules of activities, prohibitions of practices, maintenance procedures and other management practices to implement the general and specific prohibitions listed in § 51.22 and 40 C.F.R. § 403.5(a)(1) and (b). BMPs also include treatment requirements, operating procedures and practices to control plant site run-off, spillage or leaks, sludge or waste disposal, or drainage from raw material storage.
BOD (BIOCHEMICAL OXYGEN DEMAND). The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at 20°C, expressed in terms of weight and concentration (milligrams per liter (mg/l)).
CATEGORICAL PRETREATMENT STANDARDS or CATEGORICAL STANDARD. Any regulation containing pollutant discharge limits set forth by the EPA that apply to a specific category of industrial users and that appear in 40 C.F.R. Chapter I, Subchapter N.
C.F.R. Code of Federal Regulations.
COMMERCIAL WASTES. The wastes generated from a commercial operation as distinct from domestic and industrial sewage.
COMPOSITE SAMPLE. A combination of individual samples obtained at regular intervals over the period of discharge. Whenever practical, COMPOSITE SAMPLES shall be proportionate to flow rate so as to be representative of the discharge during the period of sampling. When an industrial waste discharge is collected over a period of time and discharged as a daily basis or less frequent batch, a single sample from the batch shall be considered a COMPOSITE SAMPLE for purposes of this subchapter.
DAILY DISCHARGE. The discharge of a pollutant measured during a calendar day or any 24-hour period that reasonably represents the calendar day for purposes of sampling. For pollutants with limitations expressed in units of mass, the DAILY DISCHARGE is calculated as the total mass of the pollutant discharged over the day. For pollutants expressed in other units of measurement (i.e., mg/l), except for pH, the DAILY DISCHARGE is calculated as the arithmetic average measurement of the pollutant derived from all measurements taken that day or by the measurement of a composite sample taken that day.
DISCHARGE. Same as INDIRECT DISCHARGE.
DOMESTIC SEWAGE. The water-borne waste derived from ordinary living processes.
EXISTING SOURCE. Any source of discharge that is not a new source.
GARBAGE. Solid waste from the preparation, cooking and dispensing of food, and from the handling, storage and sale of produce.
GARBAGE GRINDERS. A mechanical device that shreds or grinds food into small particles for the purpose of sewage disposal.
GENERAL MANAGER. The general manager of the City of York Wastewater Treatment Plant or his or her duly authorized representatives or designees.
GRAB SAMPLE. An individual sample that is taken from a wastestream without regard to the flow in the wastestream and over a period of time not to exceed 15 minutes.
GROUND GARBAGE. The residue from the preparation, cooking and dispensing of food that has been shredded to such degree that all particles shall be carried freely in suspension under the normal flow conditions prevailing in the sewer conduit to which they are contributory and those prevailing in public sewers with no particle greater than one-half inch in any dimension.
INDIRECT DISCHARGE or DISCHARGE. The introduction of pollutants into the POTW from any non-domestic source.
INDUSTRIAL USER. Any user that discharges industrial wastes.
INDUSTRIAL WASTES. The wastes from industrial processes as distinct from domestic and commercial sewage.
INSTANTANEOUS MAXIMUM CONCENTRATION. The concentration not to be exceeded at any time in any grab sample.
INTERCEPTOR. A device designed and installed so as to separate and retain deleterious, hazardous or undesirable matter from normal wastes, while allowing normal sewage or wastes to discharge into the drainage system by gravity.
INTERFERENCE. A discharge which, alone or in conjunction with a discharge or discharges from other sources, both:
(1) Inhibits or disrupts the POTW, its treatment processes or operations, or its sludge processes, use or disposal; and
(2) 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 in compliance with the following statutory provisions and regulations or permits issued thereunder (or more stringent state or local regulations): § 405 of the Clean Water Act being 33 U.S.C. § 1345, the Solid Waste Disposal Act (SWDA) being 42 U.S.C. §§ 6901 et seq. (including Title II, more commonly referred to as the Resource Conservation and Recovery Act (RCRA), and including state regulations contained in any state sludge management plan prepared pursuant to Subtitle D of the SWDA), the Clean Air Act being 42 U.S.C. §§ 7401 et seq., the Toxic Substances Control Act being 15 U.S.C. §§ 2601 et seq. and the Marine Protection, Research and Sanctuaries Act (40 C.F.R. § 403.3(k)).
LOCAL LIMIT. Specific discharge limits developed and enforced by the City of York upon industrial or commercial facilities to implement the general and specific discharge prohibitions listed in 40 C.F.R. § 403.5(a)(1) and (b). LOCAL LIMITS are found at § 51.22(B)(2), (B)(6) and (B)(13).
MAXIMUM DAILY LIMIT. The highest allowable daily discharge of a pollutant.
mg/l. Milligrams per liter.
MONTHLY AVERAGE. The sum of all daily discharges measured during a calendar month divided by the number of daily discharges measured during that month.
MONTHLY AVERAGE LIMIT. The highest allowable average of daily discharges over a calendar month, calculated as the sum of all daily discharges measured during a calendar month divided by the number of daily discharges measured during that month.
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 § 307(c) of the Clean Water Act, being 33 U.S.C. § 1317(c) if such standards are thereafter promulgated in accordance with that section (provided that certain conditions dealing with the construction and siting of that source vis-a-vis other sources are met) (40 C.F.R. § 403.3(m)(1)).
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) (40 C.F.R. § 403.3(p)).
pH. The logarithm (base 10) of the reciprocal of the weight of hydrogen ions in grams per liter of solution. It is a measure of the acidity or alkalinity of a solution, expressed in standard units.
PERSON. Any individual, partnership, firm, company, corporation, association, joint stock company, trust, estate, governmental entity or any other legal entity, or their legal representatives, agents or assigns. The masculine gender shall include the feminine, the singular shall include the plural where indicated by the context.
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).
PRETREATMENT. The reduction of the amount of pollutants, the elimination of pollutants, or the alteration of the nature of pollutant properties in wastewater prior to or in lieu of discharging or otherwise introducing such pollutants into a POTW. The reduction or alteration may be obtained by physical, chemical or biological processes, process changes or by other means, except as prohibited by 40 C.F.R. § 403.6(d). Appropriate pretreatment technology includes control equipment, such as equalization tanks or facilities, for protection against surges or slug loadings that might interfere with or otherwise be incompatible with the POTW. However, where wastewater from a regulated process is mixed in an equalization facility with unregulated wastewater or with wastewater from another regulated process, the effluent from the equalization facility must meet an adjusted pretreatment limit calculated in accordance with 40 C.F.R. § 403.6(e).
PRETREATMENT REQUIREMENTS. Any substantive or procedural requirement related to pretreatment, other than a national pretreatment standard, imposed on an industrial user.
PRETREATMENT STANDARDS or STANDARDS. Categorical standards, standards established by 40 C.F.R. § 403.5(b) and local limits.
PUBLICLY OWNED TREATMENT WORKS or POTW. A treatment works as defined by § 212 of the Act, being 33 U.S.C. § 1292, which is owned by a state or municipality (as defined by § 502(4) of the Act). This definition includes any devices and systems used in the storage, treatment, recycling and reclamation of municipal sewage or industrial wastes of a liquid nature. It also includes sewers, pipes and other conveyances only if they convey wastewater to a POTW treatment plant. The term also means the municipality as defined in § 502(4) of the Act, which has jurisdiction over the indirect discharges to and the discharges from such a treatment work (40 C.F.R. § 403.3(q)).
SANITARY SEWER. A sewer that carries sewage and to which storm, surface and ground waters are not intentionally admitted.
SEWAGE. A combination of the water-carried wastes from residences, business buildings, institutions and industrial establishments, together with such ground, surface and stormwaters as may be present.
SEWAGE WORKS. All facilities for collection, pumping, treating and disposing of sewage (see PUBLICLY OWNED TREATMENT WORKS or POTW).
SIGNIFICANT INDUSTRIAL USER (SIU).
(1) Except as provided in divisions (2) and (3) below of this definition:
(a) An industrial user subject to categorical pretreatment standards; or
(b) An industrial user that:
1. Discharges an average of 25,000 gallons per day (gpd) or more of process wastewater to the POTW (excluding sanitary, non-contact cooling and boiler blowdown wastewater);
2. 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
3. Is designated as such by the City of York on the basis that it has a reasonable potential for adversely affecting the POTW’s operation or for violating any pretreatment standard or requirement.
(2) The general manager may determine that an industrial user subject to categorical pretreatment standards is a non-significant categorical industrial user rather than a
SIGNIFICANT INDUSTRIAL USER on a finding that the industrial user never discharges more than 100 gallons per day (gpd) of total categorical wastewater (excluding sanitary, non-contact cooling and boiler blowdown wastewater, unless specifically included in the pretreatment standard) and the following conditions are met:
(a) The industrial user, prior to the general manager’s finding, has consistently complied with all applicable categorical pretreatment standards and requirements;
(b) The industrial user annually submits the certification statement required in 40 C.F.R. § 403.12(q), together with any additional information necessary to support the certification statement; and
(c) The industrial user never discharges any untreated concentrated wastewater.
(3) Upon a finding that a user meeting the criteria in division (1)(b) above of this definition has no reasonable potential for adversely affecting the POTW’s operation or for violating any pretreatment standard or requirement, the general manager may at any time, on its own initiative or in response to a petition received from an industrial user, and in accordance with procedures in federal pretreatment requirements of 40 C.F.R. Chapter I, Subchapter N, determine that such user should not be considered a
SIGNIFICANT INDUSTRIAL USER.
SLUG or SLUG DISCHARGE. Any discharge at a flow rate or concentration, which could cause a violation of the prohibited discharge standards in § 51.22. A SLUG DISCHARGE is any discharge of a non-routine, episodic nature, including, but not limited to, an accidental spill or a non-customary batch discharge, which has a reasonable potential to cause interference or pass-through, or in any other way violate the POTW’s regulations, local limits or permit conditions.
STORM SEWER or STORM DRAIN. A sewer that carries storm and surface waters and drainage, but excludes sewage and polluted industrial wastes.
STORMWATER. Stormwater run-off, snow melt run-off, and surface run-off and drainage.
SUSPENDED SOLIDS. The total nonfilterable residue retained on a glass fiber filter, 0.45 micron, and dried at a temperature of 103 to 105°C to a constant weight.
TOXIC POLLUTANT. Any pollutant or combination of pollutants listed as toxic in regulations promulgated by the Administrator of the Environmental Protection Agency under the provision of the Clean Water Act § 307(a), being 33 U.S.C. § 1317(a), or other Acts.
TREATMENT PLANT. The City of York Wastewater Treatment Plant, 1701 Black Bridge Road, York, PA 17402.
UPSET. An exceptional incident in which there is unintentional and temporary noncompliance with categorical pretreatment standards because of factors beyond the reasonable control of the industrial user. An UPSET does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance or careless or improper operation (40 C.F.R. § 403.16(a)).
USER. A source of indirect discharge.
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.
(2006 Code, § 18-201) (Ord. 2010-1, passed 12- -2010)