The Missouri Department of Natural Resources describes a Car Rental Agency business as:

A company that rents or leases automobiles for short periods of time for a fee.

You may need some or all of the following permits for a Car Rental Agency business:

Above Ground Storage Tank Registration https://dnr.mo.gov/waste-recycling/business-industry/permits-licenses-registrations/above-ground-storage-tank

Waste and Recycling

Above ground storage tanks are regulated by the Missouri Department of Agriculture. For more information, please visit their Fuel Device Safety and Accuracy Program webpage.