N.Y. Comp. Codes R. & Regs. tit. 21, § 1960.1
(a) Unless the context specifically indicates otherwise, the following words and terms, without regard to capitalization, shall be construed or defined as follows:
(6) Authorized representative of industrial user means:
(27) Design loading means the daily loading of parameters (that is, total suspended solids, chemical oxygen demand and phenols) utilized in the design of the water board POTW as follows:
Total suspended solids - 100,000 pounds/day
Chemical oxygen demand - 145,000 pounds/day
Phenols - 275 pounds/day
(41) Illicit connection means any drain or conveyance, whether on the surface or subsurface, which allows an illegal discharge to enter the MS4, including but not limited to:
(42) Illicit discharge means any direct or indirect non-stormwater discharge to the MS4, except: The prohibition shall not apply to any discharge permitted under an SPDES permit, waiver, or waste discharge order issued to the discharger and administered under the authority of the department, provided that the discharger is in full compliance with all requirements of the permit, waiver, or order and other applicable laws and regulations, and provided that written approval has been granted for any discharge to the MS4.
(48) Interference means a discharge which, alone or in conjunction with a discharge or discharges from other sources, both:
(51) Municipal separate storm sewer system means a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains):
(71) Priority pollutant means a toxic pollutant as defined under 307(a)(1) of the Clean Water Act requiring the USEPA to publish a list of toxic pollutants after weighing the importance of each of the following factors:
(77) SIU (significant industrial user) means any person who:
(80) SNC (significant non-compliance) means an industrial user is in significant noncompliance if its violation meets one or more of the following criteria:
(83) Special conditions means: