Which statement about Endothall mobility and leaching is correct?

• A. It is very mobile, but rapid degradation limits leaching.
• B. It is immobile and does not migrate.
• C. It never moves from the site.
• D. It always leaches to groundwater.

Answer: (A)

Endothall’s behavior in the environment is shaped by how easily it moves with water and how quickly it breaks down. It can move with percolating water through soil, showing notable mobility. But it degrades rapidly in soil and water, by hydrolysis and microbial action, which shortens how long it stays around and reduces how much can leach to groundwater. So, the best description is that it is very mobile, but rapid degradation limits leaching. Saying it is immobile or that it never moves contradicts its tendency to move with water, and saying it always leaches to groundwater ignores the rapid breakdown that limits where it ends up.