This talk is about leadership. Leaders are people at every level in an organization who believe in change and are energized by it. They understand the difficult realities of competitive existence. They motivate and challenge. They provide positive reinforcement -- but are never satisfied with...

Environmental characterization is necessary to support remediation and monitoring decisions and to construct and validate contaminant dispersion models. The more samples obtained, the greater is the protection against making incorrect decisions. However, taking too many samples wastes valuable...