From the Paradox Valley Unit website (USBR):
Environmental Impact Statement
Because the existing brine injection well is nearing the end of its useful life, the Bureau of Reclamation investigated alternatives for disposing of the brine. Reclamation has prepared and released a Final Environmental Impact Statement. The FEIS review period is from December 11, 2020 to January 11, 2021. Alternatives analyzed in the FEIS include a new injection well, evaporation ponds, zero liquid discharge technology, and no action.
After weighing the benefits and impacts of the alternatives analyzed in the FEIS, the Bureau of Reclamation has identified the no action alternative as the preferred alternative.
The no action alternative achieves the best balance among the various goals and objectives outlined in the FEIS, including: optimizing costs; minimizing adverse effects on the affected environment; minimizing the use of nonrenewable resources; consistency with Bureau of Land Management Resource Management Plans; and being in the best interest of the public, including considerations of health and safety.
The Paradox Valley Unit injection well will continue to operate until it becomes infeasible. New technically, environmentally and economically viable alternatives may be investigated in the future to continue salinity control at Paradox Valley.