A grant application is being made by Redding officials to preserve a parcel of land bordering the Centennial Watershed forest as open space.  The grant application to purchase the property on Hill Road is due next Monday.  Redding's First Selectman, the Land Trust and others say the property has long been identified as one the town would want to preserve.  The state could grant a lifetime conservation easement for the property, if it gets approval from the state.