Employees in “safety-sensitive” positions, as defined by the Omnibus Transportation Employee Testing Act of 1991, the Moving Ahead for Progress in the 21st Century (MAP-21) Act, and regulations promulgated thereunder to such acts, including employees whose position requires a commercial driver’s license (CDL), will be tested for alcohol and controlled substances as required by law (including, but not limited to, Department of Transportation required testing) at the facility designated by the District. Refusal to submit to such pre-employment testing or testing positive, shall disqualify an applicant from employment. Reasonable suspicion, random, post-accident, return-to-duty and follow-up testing shall also be conducted. Employees who test positive shall be immediately removed from safety-sensitive positions and will be terminated.