LAS VEGAS (AP) — Nevada is trying to prevent a federal regulator from being involved in decisions on a long-stalled nuclear waste repository at Yucca Mountain.

The state filed its appeal late last month after Nuclear Regulatory Commission Commissioner David Wright, who was sworn in roughly two months ago, denied a request that he recuse himself, the Las Vegas Sun reported .

Nevada argues that Wright is biased, and allowing him to participate in Yucca-related decisions would violate Nevada's due process rights.

Nevada points to several actions and statements by Wright as evidence that he's biased, including his role in establishing a group that the state says lobbies for the repository.

Wright said in a July response to the state's request that he has not "prejudged the technical, legal or policy issues in the licensing proceeding."

"(M)y limited participation was not related to the merits of the proceeding, and my public statements were intended as general support for a long-term nuclear waste storage solution," Wright said.

Nevada has put millions of dollars toward fighting the proposal through licensing, litigation and legislation. With the exception of some rural counties, the state's official position has been against the repository.

Preliminary filings in the case are due Oct. 1 and the deadline for motions is Oct. 15, said Bob Halstead, executive director of the governor's Agency for Nuclear Projects.

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Information from: Las Vegas Sun, http://www.lasvegassun.com