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HRS: Hazard Ranking System
Definition
The Hazard Ranking System (HRS) is used by the U.S. Environmental Protection Agency (EPA) to place uncontrolled waste sites on the National Priority List for action under the SuperFund Act (CERCLA).
Additional Info
Waste sites are placed on the National Priorities List (NPL) using a set of predefined criteria, one of which is the HRS rating. Scores can be determined electronically using the EPA's Quickscore software (Windows only).
The background and history of the HRS, as well as its role in the SuperFund program, is discussed in considerable detail in Chapter 4 of the National Research Council's 1994 publication Ranking Hazardous-Waste Sites for Remedial Action which is available for free download at https://doi.org/10.17226/4781.
SDS Relevance
Some of the information assessed by the HRS is the same information that is found on Safety Data Sheets. After all, a hazardous waste is typically generated after one uses a hazardous chemical. Therefore, one will sometimes find certain HRS and SDS information in the same sources.
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Further Reading
- The US EPA's Superfund home page.
- Hazard Ranking System Guidance Manual at the EPA.
- The EPA has an online Superfund Hazard Ranking System Training Course.
- The Quickscore User's Guide Version 3.2 is available for download from the EPA's web site.
- Lists and maps of NPL Site Status Information at the EPA.
- View 42 U.S.C., Chapter 103, Section 9605 which established the HRS.