The caps are designed to seal contaminated sediments in place for long periods of time versus the more widely used re-mediation methods which call for treatment or removal of these pollutants. You can access a tutorial on In-Situ Capping, capping primer in PDF format, technical briefs, and research findings on the site. If so, this is a really good site to check out. It has in-depth sections on its origins, natural and maritime parks, natural regions, landforms and landscapes, native forests, and wildlife. This is the Smithsonian's online exhibition that explores the environmental issues affecting the health of the world's oceans.
Great pictures go along with very informative material.
Oceanic Research Group A non-profit environmental organization dedicated to ocean and marine life conservation. They believe that an educated public is the best way to ensure the continual health of the oceans and their inhabitants. They offer educational films and lectures for schools, trips and more. Pollutant in a Pond 'In this applet, you are provided with a representation of a pond with an inflow stream and an outflow stream. Their newsletter, available online, chronicles the journeys the boat makes.