The groundbreaking ceremony for the town of Leesburg's waste water treatment plant expansion project will be held at 4 p.m. tomorrow at the plant's site off Rte. 7. Town Manager Jeff Minor, Mayor Robert Sevila and town council members are among those expected to attend the ceremony, which will kick off the long-awaited $9 million project town officials say is necessary because of the area's growth.

The Leesburg Post Office will no longer deliver mail to homes that do not display prominently the new addresses assigned to them a year ago this month. According to a spokesman, the new numbers were assigned because fire and rescue squads said it was difficult to find houses that were numbered out of sequence, another product of Leesburg's rapid growth in the last several years. In addition, Leesburg street signs now carry designations similar to those found in Washington -- SW, SE, NW, and NE -- for the same reason. "It was a matter of public safety," the spokesman said.

At 7 p.m. Sunday, on the steps of the Old Courthouse in Leesburg, the Bluemont Concert Series will present an evening of yarns, tales and stories told by Michael Parent of Charlottesville and Doug Elliot of Burnsville, N.C. Dubbed the Famous Storytelling Festival, the event is the fourth in a series of summer-long concerts that are partially subsidized by the Town of Leesburg, Loudoun County and the Virginia Commission for the Arts. For information call Peter Dunning, 777-0574.