60 STAT.] 79TH CONG. , 2D SESS.-CH. 516 -JUNE 28, 1946 project operation and maintenance collections on deposit in the Treas- ury to cover overpayments made to the project by landowners as provided for in the report; (3) to make refunds not to exceed $40,000 from Crow project operation and maintenance collections to heirs of certain Crow allottees on account of moneys withheld from their estates by the United States and used for the payment of delinquent operation and maintenance assessments; (4) to reform in accordance with the adjustments made by the provisions of this Act any deferment contracts heretofore executed in accordance with the provisions of section 1 of the Act of June 22, 1936 (49 Stat. 1803). SEC. 11. All claims of every description, all costs, charges, and unpaid assessments against lands in Indian ownership under the Crow irriga- tion project system, arising out of the expenditure of Treasury and tribal moneys for the construction, operation, and maintenance of the Crow irrigation project system, including the Willow Creek storage works, to and including expenditures for the fiscal year 1945, except the proportionate share of the amount authorized in section 1 (4) of this Act, are hereby canceled, and the obligations of the Indians and their lands to repay any part or all of said claims or sums are hereby dissolved: Provided, That the Crow Tribe of Indians, by appropriate action of their tribal council, releases the United States and all lands of the irrigation project from any and all claims said tribe may have arising out of the expenditure of tribal moneys by the United States for the construction, operation, and maintenance of said project. SEC. 12. All costs and charges against lands in non-Indian owner- ship under the Crow Indian irrigation project system arising out of the expenditure of Treasury and tribal moneys for the construction, operation, and maintenance of the said project systems except (1) $210,726, which is the proportionate part of the cost of the Willow Creek storage works chargeable to non-Indian lands; (2) $45,000 as provided for in section 1 (1) of this Act; (3) the proportionate share of the non-Indian landowners in the $5,000 expenditure provided for in section 1 (4) hereof; and (4) all unpaid operation and maintenance assessments remaining on the water users' ledgers of the Crow project after the adjustments have been made, as recommended in the district engineer's report of November 29, 1945, referred to in section 1 (3) of this Act, which assessments when collected shall be deposited in the Treasury of the United States for the operation and maintenance of the project, are hereby canceled, and the obligations of non-Indians and their lands to repay to the United States or the Crow Tribe any part or all of said sums so canceled are hereby dissolved: Provided however, That this cancellation of reimbursable costs and charges shall not serve to change the present lien status except as provided in section 4 hereof. SEO. 13. The cancellation of the reimbursable status of all project construction, operation, and maintenance costs and expenditures as herein provided shall be reported in the reimbursable accounts ren- dered to the Comptroller General of the United States, pursuant to the provisions of the Act of April 4,1910 (36 Stat. 270), as deductions from the total indebtedness of the project without regard to fiscal years or appropriations from which expenditures were made. SEC. 14 . This Act, so far as non-Indian lands are involved, shall cease to be effective when two years have elapsed from the date of its approval unless prior to that time the contracts contemplated in section 3 have been executed and the releases required by section 2 have been obtained: Provided, That this limitation shall not apply to the cancellations, adjustments, and application of credits to be entered on the operation and maintenance water users' ledgers not 80634--47-PT . -I 22 337 25U.S.C. 389. Claims, etc., against Indian-owned lands. Ante, p. 334. Claims against U.S. Cancellation of re- imbursable costs and charges. Ante, p. 333 . Ante, p. 334. Ante, p. 334. Restriction. Ante, p. 334 . Report of cancella- tion. 25U. S. C. §J145, 383-38B. Post, p . 867. Time limitation. Ante, p. 334. Nonapplicability.