Jump to main content or area navigation.

Contact Us

Superfund


   

Prioritization Criteria

Five criteria and associated weighting factors are used to classify threats that contaminants may pose. These include risks to human population exposed, contaminant stability, contaminant characteristics, threat to a significant environment, and program management considerations.

Each criteria is ranked on a scale of one to five. The highest score for any criteria is five, representing a current risk-current exposure scenario posing risk to human health and the environment. The lowest score for a factor is one, representing a future risk-future exposure scenario.

Factor Weight
A. Risks to human population exposed: Population size, proximity to contaminants, likelihood of exposure. 5
B. Stability: Mobility of contaminant, site structure, and effectiveness of any institutional or physical controls. 5
C. Contaminant characteristics: Concentration, toxicity and volume. 3
D. Threat to a significant environment: Endangered species or their critical habitats, sensitive environmental areas. 3
E. Program measurement consideration: Innovative technologies, cost delays, high profile projects, environmental justice, state involvement, Brownfields/economic redevelopment. 4

The raw score for each factor is multiplied as follows to obtain the maximum score:

Raw Score Range x Weight Factor = Maximum Total Score
A. Population exposed 1 - 5 x 5 25
B. Stability 1 - 5 x 5 25
C. Contaminant characteristics 1 - 5 x 3 15
D. Threat to significant environment 1 - 5 x 3 15
E. Program management considerations 1 - 5 x 4 20
Maximum total project score 100

Solid Waste and Emergency Response Home | Superfund Home | Innovative Technologies Home