Monument Realty, which has filed a federal lawsuit against Metro over a land dispute, said Friday that the expansion of the Navy Yard station near the new Washington Nationals baseball stadium would be completed on schedule.

Executives at the District company had threatened to slow work on the project because the transit agency plans to sell land near the stadium to another development company, Akridge.

Jeff Neal, a Monument principal, said in a written statement that the project would be completed before the start of the 2008 baseball season. "We have worked diligently and transparently to develop an aggressive timeline," he said.

Lisa Farbstein, a spokeswoman for Metro, said, "We have every reason to believe that they will fulfill that pledge."

Six executives have left the commercial real estate firm Scheer Partners in Rockville to form their own company focusing on Northern Virginia.

The new firm, Appian Realty Advisors, will be led by managing partners Dan Gonzalez and Tom Sandlin, who were principals at Scheer Partners. The company expects its clients to include biotech firms, government agencies, government contractors, high-tech firms and retail shops.

NAI KLNB of Columbia will be the exclusive leasing agent for seven buildings totaling about 1 million square feet at the Columbia Town Center. The properties are along Little Patuxent and Broken Land parkways.

-- Alejandro Lazo