For the purpose of this article, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   BOD or 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 parts per million by weight.
   CITY ENGINEER.  The City Engineer or his or her authorized representative.
   GARBAGE.  Solid food wastes from the domestic and commercial preparation, cooking and dispensing of food, and from the handling, storage and sale of produce.
   INDUSTRIAL WASTES.  All water-borne solids, liquids or gaseous wastes, resulting from the development of any natural resource, or any mixture of these with water or domestic sewage as distinct from normal domestic sewage.
   LATERAL.  A small diameter primary collector line for serving abutting properties.
   MAY.  The act referred to is permissive, subject to approval of the city engineer.
   NATURAL OUTLET.  Any outlet into a water course, pond, ditch, lake or other body of surface or ground water.
   PERSON.  Any individual, firm, company, association, society, corporation, group or governmental agency.
   pH.  The logarithm to the base ten of the reciprocal of the weight of hydrogen ions in grams per liter of solution.
   PROPERLY SHREDDED GARBAGE.  Garbage that has been shredded to 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 any dimension.
   PUBLIC SEWER.  A sewer in which all owners of abutting properties have equal rights and is controlled by public authority.
   SANITARY SEWER.  A sewer which 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 ground, surface and storm waters as may be present.
   SEWAGE TREATMENT PLANT.  Any city-owned facility, devices and structures used for treating sewage.
   SEWAGE WORKS.  All facilities for collecting, pumping, treating and disposing of sewage.
   SEWER.  A pipe or conduit for carrying sewage.
   SHALL.  The act referred to is mandatory.
   SLUG.  Any discharge of water, sewage or industrial waste which in concentration of any given constituent or in quantity of flows exceeds for any period of duration longer than 15 minutes more than five times the average 24-hour concentration of flows during normal operation.
   STORM DRAIN or STORM SEWER.  A sewer which carries storm and surface waters and drainage, but excludes sewage and industrial wastes, other than unpolluted cooling water.
   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.
(`90 Code, § 18-6)  (Ord. 2520, passed - -)