The Modeling Crew

• Paul Black, decision analyst and statistician
• Kate Catlett, soil scientist and contaminant transport modeler
• Mark Hooten, biologist and ecological risk assessor
• Ralph Perona, human health risk assessor
• Andy Schuh, statistician and mathematician
• Tom Stockton, statistician and decision modeler
• Mike Sully, hydrologist and modeler
• John Tauxe, hydrogeologist and contaminant transport modeler

GoldSim Models Developed by Neptune and Company

• A sample generic radiological PA. This Generic Performance Assessment is provided as a GoldSim model as a working example of our modeling work.
• NEW! A demonstration model of hydroelectric power generation under environmental constraint. Great Falls Hydropower, a model of a series of five hydroelectric dams operating in concert near Great Falls, Montana.
• Contaminant transport at Material Disposal Area (MDA) G at Los Alamos National Laboratory (LANL), Los Alamos, NM. (This work was presented as a poster at the Fall 2000 Meeting of the American Geophysical Union. This poster may be found here).
• Contaminant transport at the West Beach Landfill, at the former Naval Air Station Alameda, Alameda, CA.
• Decision analysis at the Smoky Site, at the Nevada Test Site (NTS), NV.
• Contaminant transport and exposure assessment at MDA H at LANL.
• Contaminant transport and compliance assessment at the Greater Confinement Disposal Boreholes at the NTS.
• Contaminant transport, dose assessment, and decision analysis at the Area 5 Radioactive Waste Management Site (RWMS) at the NTS. This work has grown to encompass some waste operations decisions, as well as some challenging aspects of assessing the performance objectives of 40 CFR 191. (Some of this work was presented as a poster at the Fall 2002 Meeting of the American Geophysical Union. This poster may be found here). This model also won an award at the 2007 GoldSim User Conference in San Francisco!

GoldSim Models Under Development

• Contaminant transport and dose assessment for the Mochovce National Radioactive Waste Repository in the Slovak Republic. (This site is the topic of a talk to be delivered at the 2007 General Assembly of the European Geosciences Union in Vienna. This presentation can be found here).
• DOE's Savannah River Site has several sites that we are working on in collaboration with Savannah River National Laboratory (SRNL):
  • The TRU-Pad hosts ²³⁸Pu waste resulting from the manufacture of thermoelectric generators for spacecraft. These transuranic wastes are regulated under EPA's 40 CFR 191.
  • Low-level radioactive waste disposals in E-Area take many forms and are engineered to handle many different waste forms. We have completed some preliminary models of discrete parts of the the complex system.
  • The F Tank Farm is host to several large (5000 m³) high-level waste tanks Once the waste has been removed from the tanks, the remaining structures are subject to analysis under the 2004 National Defense Authorization Act Section 3116. In essence, this is a Performance Assessment, with performance objectives of NRC's 10 CFR 61. We are working with SRNL modelers to construct a PA model for Tanks 18 and 19.