Oxygen consumption.

A formal MPCA Citizens Board
request to responsible parties at
Superfund sites asking them to
take specific actions at the site
leading to cleanup.

The use of a product more than
once in its same form for the same
or different purpose.

The depth of soil penetrated by
plant roots.

That portion of precipitation or
irrigation water that flows off a
field or paved area and enters
surface water.

A device measuring the depth of
light penetration in water.

The addition of soils to lakes, a
part of the natural aging process,
making lakes shallower. The
process can be greatly accelerated
by human activities.

Discarded or rejected industrial
waste material often suitable for
recycling.

Common antipollution device that
uses a liquid or slurry spray to
remove acidic gases and particles
from municipal waste combustion
facility flue gas.

Solid material that is in
suspension, is being transported,
or has been moved from its
original location by air, water,
gravity or ice.