A U.S. District Court judge has struck down a two-year-old, $115-million claim against Anne Arundel County by a developer who contended that the county unfairly blocked a proposed marina on the Mayo Peninsula by denying it sewerage.

U.S. District Court Judge James R. Miller, in denying the claim, said he found "no credible evidence" that either the county's staff or former county executive Robert A. Pascal "took any action for the purpose of blocking the development."

The decision, released yesterday, was hailed by county officials as a victory for the county's efforts to limit growth on the peninsula, which historically has been a farming and summer community, but has faced increasing development in the last 15 years.

It also will help the county's effort to buy the 341-acre tract of land at the center of the controversy for a county park, said County Executive O. James Lighthizer. The county has been negotiating with Chase Manhattan Bank, which now holds the property, for the last two years.

Warren Rich, an Annapolis lawyer representing the developer, Chesapeake Bay Village Inc., said no decision has been made on whether to appeal Miller's 71-page decision.