Starting next month, soil contaminated by asbestos and other pollutants is to be excavated and hauled away from a 112-acre section of Valley Forge National Historical Park that has been closed for the last 15 years. The restoration of the site is to be completed by the summer of 2014, but a date for a public opening is uncertain, Donna Davies, manager of the project for Valley Forge Park, said in Friday. Since the autumn of 2012, work has included surveying, archaeological clearance, and soil sampling.

An asbestos insulation manufacturing plant operated at the site off County Line Road south of Route 23, within what is now the park, from the 1890s to the 1970s, Davies said.  - Walter F. Naedele