The document outlines the U.S. Environmental Protection Agency's (EPA) strategies for crisis communication using web and social media, detailing past incidents like 9/11 and the BP oil spill and the techniques employed during those responses. It emphasizes the importance of using clear and simple communication, engaging with the public, and learning from past experiences to build trust and effectively disseminate information. The document also includes best practices for social media engagement, crisis response website design, and tools for data sharing.