EPA also announced on May 12 guidance for federal land managers to help these facilities reduce water pollution from a variety of non-points sources to the Chesapeake Bay watershed. The guidance is designed to provide the technical tools that will be needed to restore the bay is in response to the Chesapeake Bay Executive Order 13508 issued by President Obama in May 2009 and finalized on May 11, 2010. The guidance provides federal land managers with the help they need to implement the best proven tools and practices to restore and protect the region’s waterways and the bay. The cost-effective tools and practices outlined in the document are indicated by current scientific and technical literature to be the most state-of-the-art approaches to reduce water pollution from nitrogen, phosphorus and sediment. Others in the Chesapeake Bay watershed, including states, local governments, conservation districts, and watershed organizations, can also benefit from the information presented in this guidance.