; or (2) includes a centralized water treatment system to reduce the acid mine drainage load in impaired waters. (e) Public ownership requirement The Secretary may provide assistance for a project under this section only if the project is publicly owned. (f) Coordination The Secretary shall, to the maximum extent practicable, work with States, units of local government, and other relevant Federal agencies to secure any permits, variances, or approvals necessary to facilitate the completion of projects receiving assistance under this section. (g) Cost-share The non-Federal share of the cost of a project carried out under this section shall be 25 percent, including provision of all land, easements, rights-of-way, and necessary relocations. (h) Agreements Construction of a project under this section shall be initiated only after the non-Federal interest has entered into a binding agreement with the Secretary to pay— (1) the non-Federal share of the costs of construction of a project carried out under this section; and (2) 100 percent of any operation, maintenance, and replacement and rehabilitation costs of a project carried out under this section. (i) Contributed funds The Secretary, with the consent of the non-Federal interest for a project carried out under this section, may receive or expend funds contributed by a nonprofit entity for the project. (j) Authorization of appropriations There is authorized to be appropriated to carry out this section $50,000,000, to remain available until expended. 312. Western rural water Section 595(a) of the Water Resources Development Act of 1999 (113 Stat. 383; 117 Stat. 1836) is amended— (1) by redesignating paragraphs (1) and (2) as paragraphs (2) and (3), respectively; and (2) by inserting before paragraph (2) (as so redesignated) the following: (1) Non-Federal interest The term non-Federal interest includes an entity declared to be a political subdivision of the State of New Mexico. . 313. Continuing authorities programs (a) Removal of obstructions