The Norfolk Naval Shipyard (NNSY) site is located in Portsmouth in the tidewater region of southeastern Virginia, along the southern branch of the Elizabeth River and Paradise Creek near the mouth of the Chesapeake Bay. Dating to 1767, the facility is the oldest shipyard in the United States devoted exclusively to ship repair and overhaul. Activities at the shipyard include metal forming, repair and installation of mechanical and electrical equipment, metal fabrication, metal plating, and painting operations. Historical operations and disposal practices contaminated soil, sediment, surface water and groundwater with hazardous chemicals. Cleanups are complete at some sites within the NNSY. Operation and maintenance activities at these sites are ongoing. Investigations and remedy selection activities are ongoing at the remaining sites.