EPA announced that Peter Silva, assistant administrator for the Office of Water, will leave the agency on February 12. Nancy Stoner, currently deputy assistant administrator, will serve as acting assistant administrator. In a letter notifying staff of the change, Administrator Lisa Jackson said, “During his tenure, Pete has led a wide range of important actions to help protect the water we drink and safeguard the health of millions of Americans. We have greatly valued his service, and we offer him our deepest thanks as he prepares to embrace new opportun-ities.” The agency is beginning a search for Silva’s successor.