Drop the “federal approved” and you are there. No one in DC has a fricking clue about what is needed in the middle of flyover country.
Fed office needs to approve funds.
State submits shopping list of equipment and services that are appropriate and licensed, Fed office reviews against list they have or state attests to appropriateness of equipment and qualifications of service operations, Fed office approves funding and calendars installations and inspections.
Fed offices also require annual status reports from states. These reports serve to keep eyes on the ball.
This is not difficult.