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- Indicators that may signal the presence of hazardous materials include stressed vegetation or unusual lack of vegetation; dead or sick domestic stock, wildlife, or birds; fish kills or otherwise unexplained stream sterility or diminished species and numbers of flora and fauna; unusual coloration or discoloration of the land surface; and acrid or other chemical odors. However, some of the indicators may be ambiguous.
Bureau of Reclamation - Cite This Source - This Definition
- Avian, Central flyway, Neotropic migrant (neotropical), Pacific flyway, Raptors