Complex sentence: People in the affected area who self-evacuated were initially advised to dispose of, or wash their contaminated clothing separately, then were later told to place the items in a plastic bag and turn them in to the utility for disposal and reimbursement.
Split into simpler sentences: People in the affected area who self-evacuated were initially advised to dispose of, or wash their contaminated clothing separately. Later, they were told to place their clothes in a plastic bag and turn them in to the utility for disposal and reimbursement.