North Carolina Administrative Code › Title 15A - Environmental Quality › Chapter 02 - Environmental Management › Subchapter T - WASTE NOT DISCHARGED TO SURFACE WATERS › Section .0300 - SEWER EXTENSIONS › Section 02T .0302 - DEFINITIONS

Current through Register Vol. 39, No. 2, July 15, 2024
(a) The following
				  definitions shall apply in this Section:
(1)
				  "Alternative sewer system" means any sewer system or collection system other
				  than a gravity system or standard pump station and force main. These include
				  pressure sewer systems, septic tank with effluent pump (STEP) sewer systems,
				  vacuum sewer system, and small diameter variable grade gravity
				  sewers.
(2) "Building" means any
				  structure occupied or intended for supporting or sheltering any
				  occupancy.
(3) "Building drain"
				  means that part of the lowest piping of a drainage system that receives the
				  discharge from soil, waste, and other drainage pipes that extends 10 feet
				  beyond the walls of the building and conveys the drainage to the building
				  sewer.
(4) "Building sewer" means
				  that part of the drainage system that extends from the end of the building
				  drain and conveys the discharge from a single building to a public gravity
				  sewer, private gravity sewer, individual sewage disposal system, or other point
				  of disposal.
(5) "Fast-track" means
				  a permitting process whereby a professional engineer certifies that a sewer
				  design and associated construction documents conform to all applicable sewer
				  related rules and design criteria.
(6) "Pressure sewer system" means an
				  interdependent system of grinder pump stations, typically for residences,
				  serving individual wastewater connections for single buildings that share a
				  pressure pipe with a diameter of 1.5 inches through 6 inches. Duplex or greater
				  pump stations connected to a common pressure pipe that can operate both
				  independently and simultaneously with other pump stations while maintaining
				  operation of the system within the operating constraints shall be excluded from
				  the definition of a pressure sewer system.
(7) "Private sewer" means any part of a sewer
				  system that collects wastewater from one building and crosses another property
				  or travels along a street right of way or from more than one building and is
				  not a public sewer.
(8) "Public
				  sewer" means a sewer located in a dedicated public street, roadway, or
				  dedicated public right-of-way or easement that is owned or operated by any
				  municipality, county, water or sewer district, or any other political
				  subdivision of the state authorized to construct or operate a sewer
				  system.
(9) "Sewer system" means
				  pipelines or conduits, pumping stations including lift stations and grinder
				  stations, alternative systems, and appurtenant appliances used for conducting
				  wastewater to a point of ultimate treatment and disposal.
(10) "Small diameter, variable grade gravity
				  sewer system" means a system of wastewater collection using an interceptor tank
				  to remove solids and grease from the waste stream. Flow is transferred to the
				  central gravity system in the public right-of-way by gravity or effluent pumps.
				  With venting and design, inflected gradients may also be
				  accommodated.
(11) "Septic tank
				  with effluent pump (STEP) system" means a pressure sewer system in which the
				  individual grinder pump is replaced with a septic tank and an effluent pump
				  either in the second chamber of the septic tank or in a separate pump tank that
				  follows the septic tank.
(12)
				  "Vacuum sewer system" means a mechanized system of wastewater collection using
				  differential air pressure to move the wastewater. Centralized stations provide
				  the vacuum with valve pits providing the collection point from the source and
				  also the inlet air required to move the wastewater. In conjunction with the
				  vacuum pumps, a standard non-vacuum pump station and force main is used to
				  transport the wastewater from the vacuum tanks to a gravity sewer or ultimate
				  point of treatment and disposal.