Which statement about medical monitoring is accurate?
1) Responders who are required to wear respiratory protection and certain levels of PPE as part of their job must have baseline medical exams and on-site monitoring.
2) Responders who come in contact with any hazardous material must immediately be removed from the hot zone and placed on administrative leave.
3) Responders who work around hazardous chemicals are required to undergo yearly baseline exams but do not need further medical monitoring.
4) Responders only need to seek medical monitoring if they become physically injured or feel sick after working at a hazardous materials incident.