Applicability. This regulation and Regulations .20 and .21 of this chapter apply to large quantity handlers of universal waste as defined in COMAR 26.13.01.03B. A universal waste handler retains the classification of a large quantity handler of universal waste at least until the end of the calendar year in which the handler was classified as a large quantity handler, even if the amount of universal waste that the handler has accumulated becomes less than 5,000 kilograms. If a handler does not have an accumulation of 5,000 kilograms or more of universal waste on January 1 of a given year, the handler may elect to be regulated as a small quantity handler of universal waste under Regulations .11—.18 of this chapter until the handler accumulates 5,000 kilograms or more of universal waste for the first time in that calendar year. Prohibitions. A large quantity handler of universal waste may not: Dispose of universal waste, unless the handler does so under authority of a hazardous waste disposal facility permit; or Dilute or treat universal waste, except: In responding to releases as provided in Regulation .21D of this chapter; As provided in Regulation .20 of this chapter; or In accordance with a hazardous waste treatment facility permit. Notification. Except as provided in §C(2) of this regulation, a large quantity handler of universal waste, before accumulating 5,000 kilograms of universal waste for the first time, shall: Send to the Secretary a written notification that includes the following information: The universal waste handler's name and mailing address; The name and business telephone number of the person at the universal waste handler's site who should be contacted regarding universal waste management activities; The address or location of the universal waste management activities; A list of all the types of universal waste managed by the handler, such as “batteries, pesticides, mercury-containing equipment, aerosol cans, and lamps”; and A statement indicating that the handler is accumulating more than 5,000 kilograms of universal waste at one time; and Obtain an EPA identification number from the Department. A large quantity handler of universal waste who has already notified EPA or the Department of the handler's hazardous waste management activities and who has received an EPA identification number is considered to have satisfied the requirements of §C(1) of this regulation.