Specifications include, but are not limited to: 1. Pre-Employment Medical (Entrance) Examination a. Medical History; b. Occupational History; c. Physical Examination; d. Determination of fitness to work under unique physical stress, including respiratory protection and other related equipment; 2. Periodic Medical Examination (and Upon Exposure) a. Update of medical history; b. Update of occupational history; c. Physical examination; d. Review of OSHA Respirator Medical Evaluation Questionnaire;; 3. Exit Medical Examination a. Update of medical history; b. Update of occupational history; c. Physical examination; d. Review of OSHA Respirator Medical Evaluation Questionnaire; 4. Substance Abuse Screen for Enforcement Officers Only