Lindamood provided earthwork and excavation services for the Park District project on North Pearl Street by utilizing what is known as top-down deconstruction. This unique method allows vertical construction to begin at the ground level and up while excavation continues below, accelerating the project schedule by removing excavation as a separate phase. The $200-million project included four levels of underground parking. Lindamood successfully dug nearly 50 feet below the surface during constructon of the skyscraper, encountering and passing hard limestone at approximately 20 feet. By using the top-down method, Lindamood removed all material below the building in one month, completing the entire below grade project in six months.