D.C. Mun. Regs. tit. 17, § 199
199.1
When used in this chapter, the words and phrases set forth in this section shall have the following meanings:
Act - The Non-Health Related Occupations and Professions Licensure Act of 1998, effective April 20, 1999 (D.C. Law 12-261; D.C. Official Code §§ 47-2853.01, et seq. (2015 Repl.)).
Asbestos – any material that contains chrysotile, amosite, crocidolite, tremolite, anthophyllite, actinolite, and any of these minerals that have been chemically treated or altered, that can be crumbled, pulverized, or reduced to powder by the pressure of the ordinary human hand.
Asbestos abatement - the removal, encapsulation, enclosure, disposal, or transportation of asbestos or material that contains asbestos.
Asbestos worker – an individual who is licensed in the District to engage in asbestos abatement.
Asbestos supervisor – an individual who is licensed in the District to engage in or supervise asbestos abatement.
Encapsulation - the coating, binding, or resurfacing of a wall, ceiling, pipe, or other structure to prevent friable asbestos or material that contains asbestos from becoming airborne.
Non friable asbestos – any material that contains more than one percent (1%) of asbestos, but cannot be crumbled, pulverized, or reduced to powder by the pressure of the ordinary human hand.
SOURCE: Sections 60.4 of Regulation 72.3, approved January 28, 1972, 5DD DCRR §60.4, 18 DCR 436 (February 22, 1972); as amended by Final Rulemaking published at 65 DCR 11476 (October 12, 2018).