43 U.S. Code § 390h–35 - Prado Basin natural treatment system project
(a) In general
The Secretary, in cooperation with the Orange County Water District, shall participate in the planning, design, and construction of natural treatment systems and wetlands for the flows of the Santa Ana River, California, and its tributaries into the Prado Basin.
(b) Cost sharing
The Federal share of the cost of the project described in subsection (a) shall not exceed 25 percent of the total cost of the project.
Funds provided by the Secretary shall not be used for the operation and maintenance of the project described in subsection (a).
(d) Authorization of appropriations
There is authorized to be appropriated to carry out this section $10,000,000.