Grabbing shovels -- and hockey sticks -- NorthStar Youth Forum officials and their construction crew broke ground today for the site's third rink.

The $4 million Rink C project is expected to open at 15 Bridle Lane on Labor Day weekend, Executive Director Denise Marco has said. A Nov. 30 grand opening is planned.

Officials from Northborough's Dixon Inc. General Contracting, which is doing the project, participated in this morning's event.

NorthStar will expand its programming when the rink opens.