C.M.R. 16, 222, ch. 1, § 222-1-140, subsec. 222-1-140-10
Completed stub sheets must be returned to the Maine State Police Inspection Unit office within 30 days after the issuance of the last sticker on the sheet. The stub sheets must be completely filled out and shall not be separated at the perforations. The date of receipt of the stub sheets by the Motor Vehicle Inspection Unit shall be used to determine compliance with this requirement. (Stations must maintain photocopies of all stubs sheets at their location for a period of two years and make them available to Law Enforcement Officers or Motor Vehicle Inspectors during normal business hours. Other in-house tracking systems may be approved by the Motor Vehicle Inspection Unit, if a photo copier is not available.
C.M.R. 16, 222, ch. 1, § 222-1-140, subsec. 222-1-140-10