D.C. Mun. Regs. tit. 6-B, § 3904
3904.1 Pursuant to D.C. Official Code § 1-620.35 (a) (2006 Repl.), the Mayor and other personnel authorities with safety-sensitive positions shall:
(a) Issue a drug and alcohol testing policy; and
(b) Notify employees in safety-sensitive positions at least thirty (30) days in advance of implementing the Program.
3904.2 The drug and alcohol testing policy shall inform employees in safety-sensitive positions of all of the following:
(a) Which employees will be tested;
(b) Circumstances under which an employee will be tested;
(c) The methodology to be used for testing; and
(d) The consequences of a positive test result.
3904.3 Each employee occupying a safety-sensitive position shall sign an acknowledgment that he or she received the employee notification informing him or her of the requirements for alcohol and drug testing under the Program.
3904.4 Upon acknowledging receipt of the written notification, each employee occupying a safety-sensitive position shall be given one (1) opportunity to seek treatment if he or she acknowledges a drug or alcohol problem. An employee who so acknowledges a drug or alcohol problem shall be allowed to undergo and complete a counseling and rehabilitation program, and shall not be subject to administrative action while completing the counseling and rehabilitation program; however, the employing agency shall immediately detail the employee to a non safety-sensitive position while he or she completes the counseling and rehabilitation program.