Pub. L. 91-224, tit. I, sec. 109

Sec. 109. The Secretary of the Interior shall conduct a full and complete investigation and study of the feasibility of all methods of financing the cost of preventing, controlling, and abating water pollution, other than methods authorized by existing law. The results of such investigation and study shall be reported to Congress no later than December 31, 1970, together with the recommendations of the Secretary for financing the programs for preventing, controlling, and abating water pollution for the fiscal years beginning after fiscal year 1971, including any necessary legislation.