Los Alamos National Laboratory

Los Alamos National Laboratory

Delivering science and technology to protect our nation and promote world stability

Ecological Risk Assessments

Ecological risk assessment is the appraisal of potential adverse effects of exposure to contaminants on plants and animals.


  • Environmental Communication & Public Involvement
  • P.O. Box 1663 MS K491
  • Los Alamos, NM 87545
  • (505) 667-3792
  • Email
The ECORISK Database is a screening tool that helps scientists evaluate impacts on LANL's ecology.

Assessing our impact to the environment

The ECORISK Database is a screening tool developed by LANL to be used in conjunction with the Laboratory’s Screening-Level Ecological Risk Assessment Methods, Revision 5, to evaluate impacts from chemicals and radionuclides in soil, water, sediment, and air on the ecological receptors (or biota) at the Laboratory. The screening results are used in conjunction with data collected from surveys of habitat, species, and all other areas of applied ecology to help the Laboratory address ecological risk and incorporate ecological planning in all activities.

Ecological screening levels

Ecological screening levels are media- and receptor-specific values that may be used to screen environmental data.

Air (pore gas), soil, sediment, and water ecological screening levels are calculated for receptors in various functional feeding guilds, such as carnivores, herbivores, and insectivores.

Models Data Radionuclides/Chemicals
  • Avian
  • Mammalian
  • Earthworm
  • Plant exposure
  • Toxicity reference values
  • Bioconcentration factors
  • Transfer factors
  • Exposure parameters
  • Inorganic chemicals
  • Dioxins/furans
  • High explosives
  • Polycyclic aromatic hydrocarbons
  • Other semivolatile organic compounds
  • Polychlorinated biphenyls
  • Pesticides
  • Volatile organic compounds

ECORISK Tool Download

Previous versions