Technology demonstration assessment report for X-701B Holding Pond

Technical Report · Wed Jul 01 04:00:00 EDT 1992

OSTI ID:6829285

This Technology Demonstration Assessment Report (TDAR) was developed to evaluate and recommend the most feasible approach for cleanup of contaminated Minford soils below the X-701B Holding Pond and to summarize closure activities at the Portsmouth Gaseous Diffusion Plant (PORTS)X-701B Holding Pond(X-701B)site. In this TDAR, the recommended alternative and the activities for closure of the X-701B site are discussed. Four treatment technologies chosen for the TD, along with a contingent design, were evaluated to determine which approach would be appropriate for final closure of X-701B. These technologies address removal of soil contamination from the vadose zone and the saturated zone. The four technologies plus the Contingent Design evaluated were: In situ Soil Mixing with Solidification/Stabilization; In situ Soil Mixing with Isothermal Vapor Extraction; In situ Soil Mixing with Thermally Enhanced Vapor Extraction; In situ Soil Mixing with Peroxidation Destruction; and Contingent Closure. These technologies were evaluated according to their performance, reliability, implementability, safety, waste minimization, cost, and implementation time. Based on these criteria, a preferred treatment approach was recommended. The goal of the treatment approach is to apply the most appropriate technology demonstrated at X-231 B in order to reduce Volatile Organic Compounds (VOCs) in the saturated Minford soils directly beneath the X-701B Holding Pond. The closure schedule will include bid and award of two construction contracts, mobilization and demobilization, soil treatment, cap design, and cap construction. The total time required for soil treatment will be established based on actual performance of the soil treatment approach in the field.

• Research Organization: Portsmouth Gaseous Diffusion Plant, OH (United States); Theta Technologies, Inc., Oak Ridge, TN (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-76OR00001
• OSTI ID: 6829285
• Report Number(s): POEF/ER/Sub-90/4544; ES/ER--49-D1; ON: DE93004608
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
540250 -- Environment
Terrestrial-- Site Resource & Use Studies-- (1990-)
DEMONSTRATION PROGRAMS
FEASIBILITY STUDIES
GASEOUS DIFFUSION PLANTS
IN-SITU PROCESSING
INDUSTRIAL PLANTS
ISOTOPE SEPARATION PLANTS
LAND POLLUTION
MATTER
NATIONAL ORGANIZATIONS
NUCLEAR FACILITIES
ORGANIC COMPOUNDS
POLLUTION
PORTSMOUTH GASEOUS DIFFUSION PLANT
PROCESSING
REMEDIAL ACTION
REMOVAL
SOILS
US DOE
US ERDA
US ORGANIZATIONS
VOLATILE MATTER