Glossary H
A Hazard Index (HI): is the sum of hazard quotients for substances that affect the same target organ or organ system.
A Hazard Ranking System (HRS) is the method EPA uses to assess and score the hazards posed by a site that takes into account the nature and extent of Contamination and the potential for the hazardous substances to migrate from the site through air, soil, surface water, or groundwater; HRS scores are used to determine whether a site should be placed on the National Priorities List (NPL)
The Hazardous Air Pollutant Exposure Model, Version 4 (HAPEM4) is a computer model that has been designed to estimate inhalation exposure for specified population groups and air toxics.
A Hazardous and Solid Waste Amendments (HSWA) is amendments to RCRA,
Deutsch: Gefährlicher Abfall / Español: Residuos Peligrosos / Português: Resíduos Perigosos / Français: Déchets Dangereux / Italiano: Rifiuti Pericolosi /
A Hazardous Waste is by-product s or waste materials of manufacturing and other processes that have some dangerous property; generally categorized as corrosive, ignitable, toxic, or reactive, or in some way harmful to people or the environmentDeutsch: Gefährliche Abfallwirtschaft / Español: Gestión de residuos peligrosos / Português: Gestão de resíduos perigosos / Français: Gestion des déchets dangereux / Italiano: Gestione dei rifiuti pericolosi
Hazardous waste management refers to the systematic handling, treatment, disposal, and monitoring of waste materials that pose substantial risks to human health or the environment due to their chemical, physical, or biological properties. This discipline integrates regulatory compliance, technological innovation, and operational protocols to minimize adverse impacts while ensuring safe and sustainable waste lifecycle management.