Section 9-353 - Definitions(a) In this part the following words have the meanings indicated.(b)(1) "Industrial user" means : (i) A person who is engaged in manufacturing, fabricating, or assembling goods; or(ii) A member of any class of significant producers of pollutants identified under regulations adopted by: 2. The Administrator of the U.S. Environmental Protection Agency.(2) "Industrial user" does not include the federal, State ,and local governments.(c) "PFAS chemicals" means a class of fluorinated organic chemicals that contain at least one fully fluorinated carbon atom, including perfluoroalkyl and polyfluoroalkyl substances.(d) "Pretreatment permit" means a document issued by the Department or the Department's designee that authorizes a significant industrial user to introduce industrial wastes into a publicly owned treatment works in compliance with the pretreatment requirements under COMAR 26.08.01.01A(69).(e)(1) "Significant industrial user" means an industrial user that:(i) Is subject to categorical pretreatment standards under 40 C.F.R. Part 403.6 ;(ii) Discharges an average of 25,000 gallons per day or more of processed wastewater to a publicly owned treatment works, not including sanitary, noncontact cooling, and boiler blowdown wastewater;(iii) Contributes processed wastewater that makes up 5% or more of the average dry-weather hydraulic or organic capacity of the publicly owned treatment works; or(iv) Is designated as a significant industrial user by the publicly owned treatment works on the basis that the industrial user has: 1. A reasonable potential for adversely affecting the wastewater treatment plant's operations and sewer system; or2. Violated a pretreatment standard or requirement.(2) "Significant industrial user" does not include the federal, State, and local governments.(f) "Waters of the State" include: (1) Both surface and underground waters within the boundaries of the State subject to its jurisdiction;(2) That portion of the Atlantic Ocean within the boundaries of the State;(3) The Chesapeake Bay and its tributaries;(4) All ponds, lakes, rivers, streams, public ditches, tax ditches, and public drainage systems within the State, other than those designed and used to collect, convey, or dispose of sanitary sewage; and(5) The floodplain of free-flowing waters determined by the Department on the basis of the 100-year flood frequency.Added by 2024 Md. Laws, Ch. 557,Sec. 1, eff. 7/1/2024.Added by 2024 Md. Laws, Ch. 556,Sec. 1, eff. 7/1/2024.