Management of multiple groundwater contaminant plumes extending beyond property boundaries at the young - Rainey STAR Center (Science, Technology, and Research Center) - 15623

Conference · Wed Jul 01 04:00:00 EDT 2015

OSTI ID:22824474

Daniel, Joe; Caballero, Julian; Darr, Paul; Lombardi, Karl; Tabor, Charles; Uhlmeyer, Terri ^[1]; Surovchak, Scott ^[2]

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1. The S.M. Stoller Corporation, a wholly owned subsidiary of Huntington Ingalls Industries (United States)
2. US DOE, Office of Legacy Management (United States)

The US DOE Pinellas Plant-now known as the Young - Rainey STAR Center, located in Largo, Florida-manufactured components for nuclear weapons from 1956 to 1995. During decades of operations, chlorinated solvents were released from a drum storage area and from underground piping at multiple points adjacent to and beneath a 4.5-hectare (11-acre) building. Two groundwater contaminant plumes associated with contaminant sources beneath the building have been identified, delineated, and are being monitored. During a focused delineation campaign in 2008 to better define the plume boundaries prior to municipal construction projects in the area, the plumes were determined to extend beyond the site boundaries, beneath the adjacent roadway easements, and beneath four adjacent privately owned properties. US DOE has performed a number of activities in response to the discovery of the offsite contaminant plumes, including performing a high-resolution delineation of contaminant plumes; coordinating with local municipalities to complete two linear construction projects requiring dewatering in the vicinity of the plumes; performing risk assessment, risk management, risk communication, and community relations tasks associated with the project; coordinating with state regulators to identify a risk-based corrective action regulatory approach; and coordinating with impacted property owners to develop and implement institutional controls. During the replacement of a 1.2-meter (48-inch) municipal potable water line directly over the contaminant plume area, US DOE (1) constructed infrastructure to receive and treat dewatering effluent at a rate of 20 gallons per minute around the clock for 6 weeks, and (2) conducted breathing-zone air monitoring during excavation of a 3.0-meter (10-foot) deep trench. This degree of diligence was necessary to ensure and document that no site workers were exposed to chlorinated solvent vapors during the construction process, and that a large volume of potentially contaminated groundwater was properly treated and dispositioned. US DOE also took aggressive actions to pro-actively address claims regarding loss of property value on two properties associated with the groundwater contamination, which resulted in a teaming arrangement with each party for future management of the ongoing corrective actions. (authors)

• Research Organization: WM Symposia, Inc., PO Box 27646, 85285-7646 Tempe, AZ (United States)
• OSTI ID: 22824474
• Report Number(s): INIS-US--19-WM-15623
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
AIR POLLUTION MONITORING
CONTAMINATION
CONTROL
DRINKING WATER
EXCAVATION
FUEL STORAGE POOLS
GROUND WATER
OCCUPATIONAL EXPOSURE
PINELLAS PLANT
PLUMES
PROPERTY VALUES
RADIOACTIVE WASTE STORAGE
RESPIRATION
RISK ASSESSMENT
UNDERGROUND
VAPORS
WATER REMOVAL