§ 91-2. Definitions., Chapter 91. Sewers, Public, Ordinances, Code of Ordinances, Norwalk

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 mg/l (milligrams per liter) by weight.

CHLORINE DEMAND

The amount of chlorine which must be added to water or waste to produce a residual chlorine content of at least 0.1 milligram per liter after a minimum contact time of 10 minutes.

CITY

The City of Norwalk.

DIRECTOR

The Director of Public Works, City of Norwalk, or the person named by the Director to perform the duties of the "Director" in his absence, in the enforcement provisions of this chapter.

DRAINLAYER or LICENSED DRAINLAYER

Either an individual, partnership or corporation to whom the city has issued a license to install, alter or repair sewers, sewer connections, house connections, etc., during the period when such license is valid, and the proper agents and representatives of such "drainlayer."

NATURAL OUTLET

Any outlet into a watercourse, pond, ditch, lake or other body of surface or ground water.

PERSON

Any individual, firm, partnership, association, corporation, company, public utility, taxing district or organization of any kind, but excluding the city, its officers, boards, agencies or departments.

pH

The logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.

SEWAGE

Wastewater or water-carried wastes from residences, business buildings, institutions and industrial establishments. "Sewage" shall be further classified as follows:

(1)

DOMESTIC OR SANITARY SEWAGE

The solid and liquid wastes from toilet and lavatory fixtures, kitchens, laundries, bathtubs, shower baths or equivalent fixtures as discharged from dwellings and business and industrial buildings.

(2)

INDUSTRIAL SEWAGE OR WASTES

Includes the water-carried wastes of any industrial process as distinct from domestic or sanitary sewage. All substances carried in industrial wastes, whether dissolved, in suspension or mechanically carried by water, shall be considered as "industrial wastes."

(3)

STORMWATER

Includes the runoff or discharge of rain, melted snow or other water from roofs, surfaces of public or private lands or elsewhere. "Stormwater" also shall include subsoil drainage as defined in Subsection (4) below.

(4)

SUBSOIL DRAINAGE

Includes water from the soil percolating into subsoil drains and through foundation walls, basement floors or underground pipes.

(5)

COOLING WATER

Includes the wastewater from airconditioning, industrial-cooling, condensing and hydraulically powered equipment or similar apparatus.

(6)

GARBAGE

Solid wastes from the preparation, cooking and dispensing of food and from the handling, storage and sale of produce. "Properly shredded garbage" shall mean garbage which has been shredded so that no garbage particles will be greater than 1/2 inch in any dimension.

SEWAGE TREATMENT PLANT

Any arrangement of devices and structures used for treating sewage.

SEWAGE WORKS

All facilities for collecting, pumping, treating and disposing of sewage or wastewater.

SEWER or DRAIN

The pipe or conduit, together with manholes and other structures or equipment appurtenant thereto, provided to carry sewage, waste liquids, stormwater or other wastes. "Sewers" shall be classified as follows:

(1)

PUBLIC SEWER

A trunk, main or lateral sewer up to and including the Y-branch or tee provided for connection thereto, and to which all owners of abutting properties have equal rights and which is controlled by public authority. The "public sewer" does not include the building or house sewer or the building-connection lateral after it is connected with a building sewer.

(2)

SANITARY SEWER

A sewer which carries only sanitary sewage and to which stormwater, subsoil drainage and cooling water are not intentionally admitted.

(3)

COMBINED SEWER

A sewer receiving both stormwater and domestic sewage, including acceptable discharge of industrial wastes, subsoil drainage and cooling water.

(4)

STORM SEWER or STORM DRAIN

A pipeline carrying stormwater, subsoil drainage, acceptable cooling water or other reasonably clean waters, but excluding domestic and polluted industrial waste.

(5)

BUILDING DRAIN

That part of the lowest horizontal piping of a building drainage system that receives the discharge from the 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.

(6)

BUILDING OR HOUSE SEWER

The extension from the building drain to the public sewer.

(7)

BUILDING-CONNECTION LATERAL

The pipe laid incidental to the original construction of a public sewer from said public sewer up to some point at the side of the street, highway or similar location and there capped, having been provided and intended for extension and for use at some time thereafter as a part of a building or house sewer connection.

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 twenty-four-hour concentration of flows during normal operation.

SUSPENDED SOLIDS

Solids that either float on the surface or are in suspension in water, sewage or other liquids and which are removable by filtering, as prescribed in Standard Methods for the Examination of Water, Sewage and Industrial Waste, American Public Health Association.

WATERCOURSE

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

WATER POLLUTION CONTROL AUTHORITY

The Water Pollution Control Authority established by Chapter 113 of the Norwalk Code.