Item one. The payment of the interest upon bonds of the district and any installment on principal thereof;
Item two. Any payment to become due under any contract with the United States whether for the cost of the irrigation and drainage system and works incidental thereto or for the operation and maintenance thereof, or both, or if the reclamation contract contemplates the division of irrigable lands by the secretary of the interior, into units not necessarily contiguous for repayment purposes, the board shall prepare separate estimates for such respective units or otherwise adapt the same to the requirements of the reclamation contract;
Item three. The portion of the expense of operation and maintenance of the irrigation and drainage system to be collected by assessment and levy. This portion shall not be less than one-fourth nor more than three-fourths of the estimate for such operation and maintenance costs, including the funds required to be advanced to the United States for operation and maintenance of the irrigation and drainage systems in accordance with the provisions of the reclamation contract for the ensuing year, and shall be determined by the board from year to year, and that part thereof apportioned as in this act [73-18-1 to 73-18-24 NMSA 1978] provided for assessment and levy upon Class "A" real property shall be so assessed and levied against each acre thereof, pro rata, whether irrigated or not and the same when collected shall be applied to the cost of operating and maintaining the irrigation and drainage systems. The remainder of said total amount estimated for the expense of operation and maintenance for the ensuing year shall be paid as tolls or charges by those actually using said irrigation and drainage systems and water in accordance with the terms of their respective contracts for water;
Item four. Current and miscellaneous expenses other than as above specified and including necessary expenses of maintaining the organization of the district and carrying out the purpose of this act, which may be in the aggregate in a sum which when apportioned as in this act provided, will result in a per acre charge against Class "A" lands not in excess of forty cents (40¢) per acre. That portion of the amounts to be collected under Item four apportioned to Class "A" real property, may, at the option of the board of directors of said district, be collected in whole or in part as tolls and charges in the manner provided in this act (73-18-1 to 73-18-24 [NMSA 1978]).
NMS § 73-18-8