Comment submitted by Keystone-Conemaugh Projects, LLC (KEY-CON)

Summary: Keystone-Conemaugh Projects, LLC, a power plant operator, supports the EPA's preferred Option 1, which allows for case-by-case Best Available Technology (BAT) limits set by state permitting authorities. They argue that this approach provides necessary flexibility to account for site-specific conditions and costs, particularly regarding the economic viability of retired facilities.