R.I. Gen. Laws § 45-34-4: Lease and equipment.

Waste disposal agreements may provide for the lease of land by the municipality or municipalities from any person, or for the erection of buildings and facilities for disposal of waste by any person with provisions for the leasing of the facilities to the municipality or municipalities and with or without an option to purchase the land and/or facilities. The agreements may also provide for furnishings and equipment and other related facilities by a person by way of lease and, with or without, option for purchase during or at the termination of the lease by the municipality or municipalities. No lease entered into pursuant to this chapter shall be for a period extending beyond twenty-five (25) years from the date of entry.