; (8) in the late 1990s— (A) the United States and Mexico spent $100,000,000 (of which 45 percent was paid by Mexico and 55 percent was paid by the United States) to build the Las Arenitas and Zaragoza wastewater treatment plants; and (B) after the construction of those plants, untreated water from the New River was passed through 4 microbial treatment cells at the Las Arenitas wastewater treatment plant, which was then chlorinated and fed into a reforestation project along the desiccated Rio Hardy, which stretches to the Sea of Cortez; (9) a 10-year effort by community groups, lawyers, regulatory agencies, and politicians addressed the problem of water quality in the New River at the source by— (A) federally funding a new sewage treatment plant in Mexicali; and (B) developing a site plan for the portion of the New River in the United States; (10) in 2009, the State of California required the California-Mexico Border Relations Council— (A) to create a water quality plan to study, monitor, remediate, and enhance the water quality of the New River to protect human health; and (B) to develop a river parkway suitable for public use; (11) in 2012, the California-Mexico Border Relations Council approved the strategic plan for the New River Improvement Project that was prepared by the New River Improvement Project Technical Advisory Committee; (12) in 2016, the New River Improvement Project Technical Advisory Committee revised the recommended infrastructure of the New River Improvement Project, and the State of California appropriated $1,400,000 to provide grants or contracts to carry out the necessary planning, design, environmental review, and permitting work; (13) the revised New River Improvement Project includes the installation of a large trash screen, a conveyance system, aeration devices, a new pump station, and managed wetlands