The operator shall: Maintain and, upon request by the office, submit a current and complete: List of personnel, on a form supplied or approved by the office, that includes each individual, whether paid or unpaid, who works at the facility on a routine basis; and Staffing pattern, on a form supplied or approved by the office, that specifies: The number and ages of children enrolled; The staff/child ratio in relation to the daily schedule; and By staff name, all child care assignments; During an individual's employment at the facility and for 2 years after the date of the individual's last employment there, maintain a record for each individual that includes: Training, including basic health and safety training and yearly updates, if required under this subtitle; Verification that an individual's age complies with the minimum required for the position held; An employment medical evaluation; Criminal background check results, except that the operator shall destroy the record of those results immediately after the last day of the individual’s employment; and The date on which the staff member received the information required by COMAR 13A.17.06.02; Maintain documentation required for: Substitutes, pursuant to COMAR 13A.17.06.05; and The adult available for emergencies, pursuant to COMAR 13A.17.08.02; and Maintain a calendar or other written record of the: Days on which a substitute provides care; and Staff member in whose place the substitute worked.