83.4. The turn-key contract must state the objectives contemplated by the Community and, as the case may be, the cost limits and other general conditions with which the purification facilities must conform.
The contract confers on the contracting partner the responsibility of designing purification facilities that meet the objectives and conform with the limits and conditions, of building the facilities and operating them for a period fixed in the contract, which may in no case be less than five years.
The contract may also confer on the contracting partner the responsibility of ensuring long-term financing of the facilities.