At 2,400 beds, the $112.5 million Allegheny County Jail in Pittsburgh, PA, will be one of the nation's largest county jails.
The disused downtown site chosen by the Urban Redevelopment Authority of Pittsburgh sits alongside the Monongahela River, adjacent to Liberty Bridge, on what was previously the old CSX Railroad facility. The southern edge of the site is bound by the retaining wall of the Parkway East (Interstate I-376); one of the main transport arteries of the Greater Pittsburgh Area.
Previous investigatory activities at the site had indicated the presence of hydrocarbon contamination from a former underground storage tank. Limited soil remediation was therefore necessary in advance of the construction of the 10-story building.
This case history presents the evolution of these remediation measures, with the main emphasis on the insitu treatment of the contaminated soils adjacent to the Parkway structures.
Site remediation using soil mixing techniques of a hazardous waste site: a case history