(A) Unless the context specifically indicates otherwise, the meaning of the terms used in this chapter shall be as follows.
ATTORNEY. The Township Attorney of the Township of Williamstown, Ingham County, Michigan.
AVAILABLE PUBLIC SANITARY SEWER SYSTEM. A public sanitary sewer system located in a right-of-way, easement, highway or public way which crosses, adjoins, abuts or is contiguous to the realty involved and passes not more than 200 feet at the nearest point from a structure in which sanitary sewage originates.
B.O.D. (denoting BIOCHEMICAL OXYGEN DEMAND). The quantity of oxygen utilized in the biological oxidation of organic matter under standard laboratory procedure in five days at 20°C, expressed in milligrams per liter.
BUILDING DRAIN. That part of the lowest horizontal piping of a drainage system which receives the discharge, soil, waste and other drainage pipes inside the walls of the building and conveys it to the building sewer, beginning five feet outside the inner face of the building wall.
BUILDING SEWER. The extension from the building drain to the public sewer or other place of disposal.
CAPACITY CHARGE. In addition to any other assessments, costs or levies hereunder, a charge for capacity utilization and/or reservation shall be levied for all connections to the sewer system; further and existing connections, where the use is increased, shall be charged a capacity charge based on the increased units.
CITY. The City of Williamston.
CLASSES OF USERS. The division of sanitary sewer customers into classes by similar process or discharge flow characteristics, as follows:
(a) COMMERCIAL USER. Any retail or wholesale business engaged in selling merchandise or a service and that discharges only segregated domestic wastes or wastes from sanitary conveniences.
(b) INDUSTRIAL USER. Any manufacturing establishment which produces a product from raw or purchased material.
(c) INSTITUTIONAL USER. Any educational, religious or social organization such as a school, church, nursing home, hospital or other similar entity that discharges only segregated domestic wastes or wastes from sanitary conveniences.
(d) RESIDENTIAL USER. An individual home or dwelling unit including mobile homes, apartments, condominiums or multi-family dwellings that discharge only segregated domestic wastes or wastes from sanitary conveniences.
COMPATIBLE POLLUTANT. Biochemical oxygen demand, suspended solids, pH and fecal coliform bacteria, plus any additional pollutants identified in the NPDES permit if the treatment works was designed to treat the pollutants and, in fact, can remove the pollutants to a substantial degree. The term substantial degree generally means removals in the order of 80% or greater.
COMBINED SEWER. A sewer receiving both surface run-off and sewage.
GARBAGE. Solid wastes from the domestic and commercial preparation, cooking and dispensing of food, and from the handling, storage and sale of produce.
INCOMPATIBLE POLLUTANT. Any pollutant that is not a compatible pollutant, as defined herein.
INFILTRATION. Any waters entering the system from the ground, through such means as, but not limited to, defective pipes, pipe joints, connections or manhole walls. INFILTRATION does not include and is distinguished from inflow.
INFILTRATION/INFLOW. The total quantity of water from both infiltration and inflow.
INFLOW. Any waters entering the system through such sources as, but not limited to, building downspouts, footing or yard drains, cooling water discharges, seepage lines from springs and swampy areas and storm drain cross connections.
INSPECTOR. Any person or person authorized by the township to inspect and approve the installation of building sewers and their connection to the public sewer system.
NATURAL OUTLET. Any outlet into a watercourse, pond, ditch, lake or other body of surface or ground water.
NORMAL STRENGTH SEWAGE. A sanitary wastewater flow containing an average daily BOD of not more than 200 mg/l or an average daily suspended solids concentration of not more than 250 mg/l.
NPDES PERMIT. The permit issued pursuant to the National Pollution Discharge Elimination System for the discharge of wastewaters into the waters of the state.
OPERATION AND MAINTENANCE AND REPLACEMENT COSTS. All costs, direct and indirect, (other than debt service) necessary to insure adequate wastewater treatment on a continuing basis, conform with all related federal, state and local requirements and assure optimal long term facility management (these O&M and R costs include replacement costs).
PERSON. Any individual, firm, company, association, society, corporation or group.
pH. The logarithm of the reciprocal of the concentration of hydrogen ions in grams per liter of solution.
PRETREATMENT. The treatment of extra strength industrial wastewater flows in privately owned pretreatment facilities prior to discharge into the public sewer.
PRIVATE SEWAGE DISPOSAL SYSTEMS. Any septic tanks, lagoons, cesspools or other facilities intended or used for the disposal of sanitary sewage other than via the public sanitary sewer.
PROPERLY SHREDDED GARBAGE. 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 particle greater than one-half inch in dimension.
PROPERTY OWNER. The person or persons having legal title to the premises according to the township's tax records and shall include in the case of a land contract sale the land contract vendee or vendees; provided that, the township has been furnished with a copy of the land contract or assignment thereof.
PUBLIC SEWER. The main collector sewer system in which all owners of abutting properties have equal rights and is owned by the Township of Williamstown.
REPLACEMENT. Necessary expenditures made during the service life of the treatment works to replace equipment and plant appurtenances required to maintain the intended performance of the treatment works.
RESIDENTIAL EQUIVALENTS or EQUIVALENT UNIT. The factor representing a ratio of the estimated sewage generated by each user class to that generated by the normal single-family residential user.
SANITARY SEWER. A sewer which carries sewage and to which storm, surface and ground waters are not intentionally admitted.
SEWAGE. A combination of the liquid and water-carried wastes from residences, commercial buildings, institutions and industrial establishments, (including polluted cooling water) together with the ground, surface and storm waters as may be present. The three most common types of sewage are:
(a) COMBINED SEWAGE. Wastes including sanitary sewage, industrial sewage, storm water, infiltration and inflow carried to the wastewater treatment facilities by a combined sewer.
(b) INDUSTRIAL SEWAGE. A combination of liquid and water carried wastes, discharged from any industrial establishment, and resulting from any trade or process carried on in that establishment (this shall include the wastes from pretreatment facilities and polluted cooling water).
(c) SANITARY SEWAGE. The combination of liquid- and water-carried wastes discharged from toilet and other sanitary plumbing facilities.
SEWAGE TREATMENT FACILITY. Any arrangement of devices and structures used for treating sewage.
SEWER. A pipe or conduit for carrying sewage.
SEWERAGE WORKS. All facilities for collecting, pumping, treating and disposing of sewage.
SHALL. Mandatory; MAY. Permissive.
SINGLE-FAMILY DWELLING. A residence in which only one family resides.
SLUG. Any discharge of water, sewage or industrial waste which in concentration of any given constituent or in quantity of flow exceeds for any period of duration longer than 15 minutes more than five times the average 24-hours concentration or flows during normal operation.
STORM DRAIN (sometimes termed STORM SEWER). A sewer which carries storm and surface water and drainage, but excludes sewage and industrial wastes, other than unpolluted cooling water.
SUPERVISOR. The Supervisor of Williamstown Township or his or her authorized agent or representative.
SURCHARGE. The additional charge which a user discharging wastewater having strength in excess of the limits set by the City of Williamston for transmission and treatment within the sanitary sewage system will be required to pay to meet the cost of treating the excessively strong wastewater.
SUSPENDED SOLIDS. Solids that either float on the surface of, or are in suspension in water, sewage or other liquids, and which are removable by laboratory filtering.
SYSTEM. The complete Township of Williamstown and City of Williamston wastewater collection and treatment system, including all sewers, pumps, lift stations, treatment facilities or other facilities and appurtenances used or useful in the collection, transportation, treatment and disposal of domestic, commercial or industrial wastes, and all easements, rights and land for same and including all extension and improvements thereto which may hereafter be acquired or constructed.
TABLE OF UNIT FACTORS. That table which shall be adopted by the city and utilized to identify the various classifications of sewer users and stating as "residential equivalents" the ratio of the use of the system to that of a single-family residence.
TOWNSHIP. The Township of Williamstown, Ingham County, Michigan.
TREATMENT WORKS. All facilities for collecting, pumping, treating and disposing of sewage, as defined herein.
USER OM&R CHARGE. The charge levied on all users of the treatment works for the cost of the operation and maintenance, including replacement, of the treatment works.
USER DEBT RETIREMENT CHARGE. The charge levied on all users of the treatment works for the cost of any bond debt of which debt repayment is to be met from the revenues of the works.
WASTEWATER. Water which contains, or previous to treatment has contained, pollutants such as sewage and/or industrial wastes.
WASTEWATER DISPOSAL AGREEMENT. The agreement between the Township of Williamstown and the City of Williamston for providing for collection and disposal of wastewater originating in the township.
WATERCOURSE. A channel in which a flow of water occurs, either continuously or intermittently.
(B) Others to be added later as the township deems necessary.
(Ord. 26, eff. 6-19-1982)