• The state of New Mexico and the U.S. Environmental Protection Agency each developed a plan for the station west of Farmington to meet Clean Air Act standards.
• The state's plan is cheaper, and it and the company asked EPA to hold off on its plan so it could consider the state option. They and the New Mexico grid operator are in court to stop EPA, too. 
• EPA said it would hold off for three months, but it's unclear what will happen in that period.

From the article:

PNM Resources' New Mexico utility, PNM, was notified that the Environmental Protection Agency granted a 90-day stay in the effectiveness of the federal plan for San Juan Generating Station to meet visibility requirements of the Clean Air Act in New Mexico.