(a) We may impose an enforcement action against your operation:(1) Even if you have taken a voluntary action; and(2) Any time while the voluntary action is in effect.(b) If your action is voluntary suspension or voluntary closure, we may also impose the enforcement action:(1) When you reopen your operation after your voluntary suspension ends; or(2) If you apply for another permit after your voluntary closure; for example, if your operation met the requirements for probation when you voluntarily closed your operation, we may include a condition on your new permit that your operation is on probation.(c) We may also determine that an enforcement action is unnecessary because of your voluntary action.