Guidance for environmental professionals, health agencies, consultants, and other stakeholders to identify, evaluate, and manage biological contaminants found in water, soil, air, and waste.

Provides a practical framework for developing and implementing effective communication plans and stakeholder outreach activities for environmental issues. Includes key risk communication concepts, steps for conducting communication efforts, case studies, and adaptable tools and resources to support community engagement.

Explains how to incorporate bioavailability of contaminants in soil into human health risk assessments by reviewing key concepts, methods, and tools for developing site-specific bioavailability values to improve exposure estimates.

This document assists effective decision-making among state, local, and federal project managers and decision makers tasked with developing or reviewing risk assessments for contaminated sites using site-specific approaches, scenarios, and parameters.