The quantity of sediment arriving
at a specific location.

Percolation of water through the
soil from unlined canals, ditches,
laterals, watercourses, or water
storage facilities.

The organic waste and wastewater
that comes from homes, farms and
businesses.

A depression in the landscape
where limestone has been dissolved.

The removal of a fairly uniform
layer of soil material from the
land surface by the action of
rainfall and surface runoff.

The top layer of the earth's
surface, composed primarily of
rock, minerals and decomposed
matter from dead plants or animals.

Borings into the earth that bring
up samples of soil or rock from
various levels to study for
composition or contamination.

A generic health-based criteria
for soil and health risk limits
that are based on a standard
exposure scenario for contaminated
sites.

Trash and garbage without enough
liquid to flow freely.

The design, manufacture and use of
products which reduces their
amount and toxicity. Source
reduction measures include:
reusing items, minimizing the
amount of products used, extending
the useful life of a product, and
reducing the amount of excessive
product packaging.