Each private provider that contracts with the District of Columbia to provide employees to work in positions that are designated as safety-sensitive and each private entity licensed by the District government that has employees who work in positions that are designated as safety-sensitive shall establish mandatory drug and alcohol testing policies and procedures that are consistent with the requirements of this subchapter; provided, that a private provider or entity is not required to comply with title XX-E
D.C. Code § 1-620.36