Military bases can be contaminated with a wide variety of substances from air craft jet fuel to unexploded bombs. The primary "contaminants of concern" for the Hunters Point Shipyard are toxic chemicals, heavy metals, and radiation. The following links will take you to pages that will provide you with a summary of why these substances are of concern and their relationship to the Shipyard.

Toxic chemicals -- for an overview of the origin and health effects of toxic chemicals with links to more detailed information.
For more specifc information about one of the contaminants listed below, click on the name: