New Jersey Administrative Code › Title 7 - ENVIRONMENTAL PROTECTION › Chapter 20 - DAM SAFETY STANDARDS › Subchapter 1 - APPLICATION PROCEDURE; DESIGN CRITERIA FOR DAM CONSTRUCTION; DAM INSPECTION PROCEDURE › Section 7:20-1.2 - Definitions

Current through Register Vol. 56, No. 14, July 15, 2024
The following words and terms, as used in this chapter,
				  shall have the following meanings, unless the context clearly indicates
				  otherwise.
"Applicant" means any person making application for a dam
				  permit.
"Auxiliary spillway" means the second used spillway during
				  flood flows which is not the emergency spillway.
"Dam" means any artificial dike, levee or other barrier,
				  together with appurtenant works, which is constructed for the purpose of
				  impounding water, on a permanent or temporary basis, that raises the water
				  level five feet or more above the usual, mean, low water height when measured
				  from the downstream toe-of-dam to the emergency spillway crest or, in the
				  absence of an emergency spillway, the top-of-dam.
"Department" means the New Jersey Department of Environmental
				  Protection.
"Design freeboard" means the minimum freeboard which would
				  exist during passage of the design flood.
"Division" means the Division of Dam Safety and Flood Control
				  in the Department of Environmental Protection.
"Emergency spillway" means the spillway capable of passing
				  the spillway design storm with the principal and/or auxiliary spillway
				  blocked.
"Environmental impact statement" means a report which
				  describes the real and potential impacts which will or may result from the
				  construction and operation of a proposed dam project, the adverse environmental
				  impacts which cannot be avoided, the steps to be taken to minimize adverse
				  impacts and the alternatives to the project with reasons for the acceptability
				  or unacceptability.
1. The report
				shall address real or potential impacts upon ecology, natural resources,
				historical and archeological resources, recreational resources, aesthetic
				resources, endangered and non-game species, fisheries and any other
				identifiable impacts; and
2. The
				report shall include a listing of qualifications of those preparing the report
				and a reference list of pertinent published information relating to the
				project, the project site and the surrounding region.
"Formal inspection" means the inspection by a New Jersey
				  licensed professional engineer to reevaluate the safety and integrity of the
				  dam and appurtenant structures to determine if the structure meets current
				  design criteria, including a field inspection and a review of the records on
				  project design, construction and performance.
"Freeboard" means the vertical dimension between the crest of
				  the embankment of a dam (without camber) and the reservoir water surface at the
				  spillway design flood stage.
"Height-of-dam" means the vertical dimension from the lowest
				  point in the stream bed or ground surface at the downstream toe of the dam to
				  the elevation of the top of dam (without camber).
"Independent Review Board" means one or more independent
				  professional engineers who are qualified in the design, construction and
				  rehabilitation of dams to perform a review of the project design and
				  construction.
"Informal inspection" means the visual inspection of the dam
				  by the dam owner or operator to detect apparent signs of deterioration or other
				  deficiencies of the dam structure or function.
"Levee" or "dike" means any artificial barrier together with
				  appurtenant works that will divert or restrain the flow of a stream or
				  river.
"One-hundred-year storm" means the storm which is estimated
				  to have a one percent chance, or one chance in 100, of being equalled or
				  exceeded in any one year.
"Outlet" means an opening through which water can be freely
				  discharged from a reservoir for a particular purpose.
"Owner and/or operator" means any person who owns, controls,
				  operates, maintains, manages or proposes to construct a dam.
"Permit" or "dam permit" means all approvals required under
				  58:4-1 et seq. for the
				  construction and operation of a dam.
"Person" means any individual, proprietorship, partnership,
				  association, corporation, municipality, county or public agency.
"Pipe conduit" means any hollow tube which conveys water
				  through a dam from a reservoir, either as a spillway or as a drain.
"Principal spillway" means the primary or first used spillway
				  during normal inflow and flood flows.
"Probable maximum precipitation" or "(PMP)" means the
				  theoretically greatest depth of precipitation for a given duration that is
				  physically possible, over a given size storm area, at a particular geographic
				  location, at a certain time of year.
"Regular inspection" means the visual inspection of a dam by
				  a New Jersey licensed professional engineer to detect any signs of
				  deterioration in material, developing weaknesses or unsafe hydraulic or
				  structural behavior.
"Reservoir" means any impoundment or any potential
				  impoundment that will be created by a dam, dike or levee.
"Spillway" means a structure other than low flow outlets,
				  over or through which flood flows are discharged.
"Spillway design storm" means the storm upon which the
				  hydraulic capacity of the spillway structure is designed.
"Toe-of-dam" means the junction of the downstream face of a
				  dam with the ground surface or the invert of the outlet pipe, whichever is the
				  lowest point.