Hazardous Ranking System

Meaning, Term, and Glossary Definition - What is Hazardous Ranking System?

The principal screening tool used by EPA to evaluate risks to public health and the environment associated with abandoned or uncontrolled hazardous waste sites. The HRS calculates a score based on the potential of hazardous substances spreading from the site through the air, surface water, or ground water, and on other factors such as density and proximity of human population. This score is the primary factor in deciding if the site should be on the National Priorities List and, if so, what ranking it should have compared to other sites on the list.

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Related glossary terms:

Agroecosystem   Community Water System   Condensate Return System   Conventional Systems   Cradle-to-Grave or Manifest System   Ecosystem   Ecosystem Structure   Emergency and Hazardous Chemical Inventory   Energy Management System   Extremely Hazardous Substances   
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