Neptune’s team of toxicologists, risk assessors, modelers, and statisticians supports human health risk assessment by applying state-of-the-art risk assessment tools to support all phases of risk management, including:

• Calculation of site-specific risk-based screening values and performance of screening level risk assessments under applicable regulatory guidance;

• Asbestos risk assessment;

• Performance of probabilistic human health risk assessments;

• Application of a toolbox of contaminant transport models (e.g., Multimed, MEPAS, HELP, RESRAD, MODFLOW, ArcInfo GRID, HSSM, USGS MOC) to support risk assessments;

• Development of project-specific contaminant transport and risk models to support risk management decisions at complex sites;

• Integration of risk assessment with performance assessment of radioactive and other hazardous waste;

• Analysis of relative risk associated with remedial decision alternatives;

• Integration of risk assessment with decision analysis;

• Determination of data needs using risk assessment integrated with value-of-information analysis; and,

• Toxicological evaluations.

Sample projects include the following:

• Quantico Marine Corp. Base

• Los Alamos National Laboratory Watershed Investigations

• Chino Mine Project