Upsurp?

The funny thing about Musgrave's quote below is that the NRC has never said they plan to upsurp the authority of these departments. Or is Musgrave just upset because the state health department has little authority when it comes to the proposed Uranium mine near Nunn, Colorado?

"I vehemently oppose any effort by the NRC to usurp the authority of state
health departments and the Environmental Protection Agency over water quality,"
she wrote, adding that: "mining operations must not be allowed, under any
circumstances, to flaunt either state or EPA water quality standards."