This section presents information on remediation technologies
and corrective measure techniques that can be implemented to
contain and clean up environmental contamination. Before
selecting an environmental technology a site owner should answer
several basic questions:
What medium has the contamination
affected? (Air, soil, groundwater, surface water).
What is causing the
Is the contamination level high
enough to warrant remedial action?
Cleanup requirements are based on federal or state
environmental laws, which define "contamination" and sometimes
establish graduating levels of contamination. Such guidelines
are often called "action Levels" or "Maximum Contamination
Levels" (MCLs). The Environmental Medicine section contains MCLs
for 50 of the most important chemical contaminants. A list of
state environmental authorities are given in the Environmental
Law section. These site-specific factors are important to the
selections of a feasible environmental technology that can
achieve cleanup criteria for a given site. Each contaminated
site will have its own unique geographic setting, environmental
conditions, and site usage history. The feasible remedial
methods must then be analyzed using cost, reliability, and
time-to-completion as the comparative criteria.