D.C. Mun. Regs. tit. 6-B, § 431
431.1 Employees in safety sensitive positions shall be subject to random drug and alcohol testing. Such employees shall be placed in a random drug and alcohol testing pool.
431.2 Each year, the program administrator shall conduct a number of random drug tests that shall be at least equal to fifty percent (50%) of the total drug and alcohol testing pool.
431.3 Similarly, each year, the program administrator shall conduct a number of alcohol tests that shall be at least equal to ten percent (10%) of the total drug and alcohol testing pool.
431.4 Employees in the drug and alcohol pool shall be randomly selected in a manner consistent with accepted industry practice.
431.5 Random drug and alcohol testing shall be conducted in accordance with §§ 425 through 427.
SOURCE: Final Rulemaking published at 62 DCR 13820 (October 23, 2015); as amended by Final Rulemaking published at 67 DCR 10946 (September 11, 2020).