The railroad company will review the submitted Maintenance Notice Letter or Maintenance Consent Request further. This review could take up to six months.

As of 2021, the Union Pacific Railroad requires a Maintenance Consent Letter with Contractor Endorsement (MCL) on all maintenance projects in their right of way. The received MCL will clear a project for letting and takes the place of traditional contractor right of entry. The MCL will then be distributed by RRD to all necessary parties for execution by the contractor.