NJPDES MASTER GENERAL PERMIT PROGRAM INTEREST, Trenton Permit No.NJ0141852
DST160003 Stormwater Discharge Master General Permit
n. "Small MS4" means all municipal separate storm sewers (other than "large" or "medium"
municipal separate storm sewer systems as defined in N.J.A.C. 7:14A-1.2) that are:
i. Owned or operated by municipalities described under N.J.A.C. 7:14A-25.1(b);
ii. Owned or operated by county, State, interstate, or Federal agencies, and located at public
complexes as described under N.J.A.C. 7:14A-25.2(a)2;
iii. Owned or operated by county, State, interstate, or Federal agencies, and located at highways and
other thoroughfares as described under N.J.A.C. 7:14A-25.2(a)3; or
iv. Owned or operated by county, State, interstate, Federal, or other agencies, and receive special
designation under N.J.A.C. 7:14A-25.2(a)4.
v.
Note that all MS4s covered under the Tier A MS4 NJPDES permit are "small MS4s".
o. "Solids and floatable materials" means sediment, debris, trash, and other floating, suspended, or
settleable solids as defined at N.J.A.C. 7:14A-25.6(b)3iii.
p. "Storm drain inlet" means the point of entry into the storm drain system and is, where a catch basin
is present, the uppermost portion (or cover) of a catch basin.
q. "Stormwater" means water resulting from precipitation (including rain and snow) that runs off the
land's surface; is transmitted to the subsurface; is captured by separate storm sewers or other
sewerage or drainage facilities; or is conveyed by snow removal equipment.
r. "Stormwater facility" includes, but is not limited to: catch basins, detention basins, retention
basins, filter strips, riparian buffers, infiltration trenches, sand filters, constructed wetlands, wet
basins, bioretention systems, low flow bypasses, and stormwater conveyances. Stormwater
facilities include structural stormwater management measures.
s. "Stormwater management basin" means an excavation or embankment and related areas designed
to retain stormwater runoff. A stormwater management basin may either be normally dry (that is, a
detention basin or infiltration basin), retain water in a permanent pool (a retention basin or wet
pond), or be planted mainly with wetland vegetation (most constructed stormwater wetlands).
t. "Stormwater management measure" means any structural or nonstructural strategy, practice,
technology, process, program, or other method intended to control or reduce stormwater runoff and
associated pollutants, or to induce or control the infiltration or groundwater recharge of stormwater
or to eliminate illicit or illegal non-stormwater discharges into stormwater conveyances.
Stormwater management measures include stormwater facilities.
u. "Stream scouring" means the erosion or removal of streambed or bank material by the physical
action of flowing water and the sediment that it carries.
v. "Subsurface infiltration/detention system" means a vault, perforated pipe, and/or stone bed that is
located entirely below the ground surface and that temporarily stores and attenuates stormwater
runoff."
w. "Tier A Municipality's MS4" means an MS4 owned and operated by a Tier A Municipality.
x. "Wood waste" means source separated whole trees, tree trunks, tree parts, tree stumps, brush and
leaves provided that they are not composted, and lumber (non-chemically treated and unpainted);
"Yard trimmings" means grass clippings, leaves, wood chips from tree parts, and brush.
Notes and Definitions Page 4 of 22