The area of open water in a lake
providing the habitat for
phytoplankton, zooplankton and
fish.

The shallow areas around a lake's
shoreline, dominated by aquatic
plants. The plants produce oxygen
and provide food and shelter for
animal life.

A system that separates collected
mixed residential recyclables by
type so that they can be recycled
into new products available for
market.

Minnesota Environmental Response
and Liability Act. Minnesota's
Superfund law, passed in 1983.

Describes a lake of moderate
photosynthetic productivity.

Midway in nutrient levels between
the eutrophic and oligotrophic
lakes.

A moving source of pollution, such
as a car or truck.

A well installed at a site to
determine the direction of ground
water flow, levels of
contamination and other ground
water characteristics.

Waste generated in households,
commercial establishments,
institutions and light industries.
Industrial process, agricultural
and mining wastes and sewage
sludge are not municipal solid
waste.

A well that is open to more than
one aquifer. Such wells can be
pathways for contaminants to reach
deep ground water.