Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Sampling sites repartition based on their distance from main industrial sources’ and exposure frequencies to their plumes’
| Risk level | Calculated cases of cancer occurrence | Cancer risk |
|---|---|---|
| I | < 10−6 | Very low |
| II | 10−6 - 10−5 | Low |
| III | 10−5 - 10−4 | Medium |
| IV | 10−4 - 10−3 | High |
| V | >10−3 | Very high |
