§ 122-76. Definitions.

The following words, terms and phrases, when used in this article, shall have the meanings ascribed to them in this section, except where the context clearly indicates a different meaning:

Approving authority means the city engineering section of the utilities division of the public works department or the director of public works or other designated official of the city or his duly authorized deputy, agent or representative.

Automated interior grease trap means a hydromechanical grease control interceptor designed to separate, trap or hold fats, oil, and grease substances to prevent their entry into the sanitary collection system and provide automated, continuous removal of the collected FOG into a container. These devices are usually installed inside, and under, or in close proximity to, sinks or other fixtures likely to discharge grease.

BOD (biochemical oxygen demand) means the quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at 20 degrees Celsius, expressed in milligrams per liter.

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 five feet outside the inner face of the building wall.

Building sewer means the extension from the building drain to the public sewer or other place of disposal.

Chlorine requirement means the amount of chlorine in milligrams per liter, which must be added to sewage to produce a residual chlorine content or to meet the requirements of some other objective, in accordance with procedures set forth in the definition for the term "standard methods."

FOG stands for fats, oils and grease.

Food service establishment (FSE) means any establishment, business, or facility engaged in preparing, serving, or making food available for consumption.

Garbage means solid wastes from the domestic and commercial preparation, cooking, and dispensing of food, and from the handling, storage, and sale of produce.

Garbage grinder means a device which shreds or grinds up solid or semisolid waste materials into smaller portions for discharge into the sanitary sewer collection system.

Gravity grease interceptor means a large tank or device so constructed as to separate and trap or hold fats, oil and grease substances from entering the sanitary sewer collection system. Grease interceptors are typically located outside FSEs due to their size.

Grease means a material composed primarily of fats, oil and grease from animal or vegetable sources. The term fats, oil and grease may be referred to as grease or types of grease and does not include petroleum-based products.

(1)

Brown grease means fats, oils and grease that are discharged to the grease control equipment.

(2)

Yellow grease means fats, oils and grease, usually spent oil from deep frying, that have not been in contact with or contaminated from other sources (water, wastewater, solid wastes, etc.) and can be recycled.

Grease control device (GCD) means a device for separating and retaining grease and solids prior to wastewater existing the food service establishment (FSE) and entering the sanitary collection system. These devices include hydromechanical grease interceptors and gravity grease interceptors.

Hydrogen ion concentration. See the definition for "pH".

Industrial wastes means the liquid wastes from industrial manufacturing processes, trade, or business as distinct from sanitary sewage.

Manual interior grease trap means a small manually-cleaned interior grease interceptor with a flow control device installed on sinks in smaller FSEs where no frying occurs.

Natural outlet means any outlet into a watercourse, pond, ditch, lake or other body of surface water or groundwater.

pH means the logarithm of the reciprocal of the weight of hydrogen ions in grams, per liter of solution.

Properly shredded garbage means the wastes from the preparation, cooking, and dispensing of foods 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 any dimension.

Public sewer means a sewer in which all owners of abutting properties have equal rights, and is controlled by public authority.

Regulatory agency means the state department of environmental quality, office of pollution control.

Sand/oil interceptor means a device to separate oil and sand from wastewater produced from car washes; motor vehicle, airplane, and boat storage yards; gasoline and diesel service stations; repair garages; any private or public wash rack used for cleaning machinery or machine parts; or any other similar facility which may introduce sand, oil, or hydrocarbons into the city sewer.

Sanitary sewer means a sewer which carries sewage and to which stormwater, surface water, and groundwater are not intentionally admitted.

Service charge means the basic assessment levied on all users of the public sewer system whose wastes do not exceed in strength the concentration values established as representative of normal sewage.

Sewage means a combination of the water-carried wastes from residences, business buildings, institutions, and industrial establishments, together with such groundwater, surface water, and stormwater as may be present.

Sewage treatment plant means any arrangement of devices and structures used for treating sewage.

Sewer means a pipe or conduit for carrying sewage.

Sewerage works means all facilities for collecting, pumping, treating, and disposing of sewage.

Slug means 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-hour concentration or flows during normal operation.

Standard methods means the examination and analytical procedures set forth in the most recent edition of "Standard Methods for the Examination of Water, Sewage, and Industrial Wastes," published jointly by the American Public Health Association, the American Waterworks Association and the Water Pollution Control Federation.

Storm drain (sometimes termed "storm sewer") means a sewer which carries stormwater and surface water and drainage, but excludes sewage and industrial wastes, other than unpolluted cooling water.

Surcharge means the assessment in addition to the service charge which is levied on those persons whose wastes are greater in strength than the concentration values established as representative of normal sewage.

Suspended solids means 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.

Waste hauler means one who transfers waste from the site of a customer to an approved site for disposal or treatment. Waste haulers are required to be certified as a pumper by the Mississippi State Department of Health.

Watercourse means a channel in which a flow of water occurs, either continuously or intermittently.

(Code 1971, § 29-95; Ord. of 9-20-94; Ord. No. 2018-7(8), § 1, 2-27-18)

Cross reference

Definitions generally, § 1-2.

Editor's note

Section 5 of Ord. No. 2018-7(8), adopted Feb. 27, 2018, provides for an effective date of March 1, 2018.