North Dakota Century Code Title 61. Waters § 61-04.1-33. Bids required--When

If the department of water resources contracts with any licensed controller in an amount in excess of ten thousand dollars in any one year, the department shall advertise for proposals for such weather modification activities and, in its proceedings with respect to bids therefor, shall substantially follow the manner and form required by the laws of this state for the purchase of supplies by the office of management and budget. The department may not enter a contract or agreement for weather modification services except with a controller, holding the permit as required by this chapter, except for the purpose of gathering technical information, and making studies or surveys.