Farm Groups Appeal Chesapeake Bay Cleanup Ruling Farm groups are appealing a judge's decision to uphold U.S. Environmental Protection Agency pollution limits that are designed to improve the health of the Chesapeake Bay. The American Farm Bureau Federation and the National Corn Growers Association said Tuesday that they are appealing the Sept. 13 decision. Farm Bureau president Bob Stallman calls it a "wrongly decided case that has dangerous implications for farmers and many others." The Chesapeake Bay Foundation has called the ruling "a great day for clean water in the region." The EPA, working with six states, set standards to reduce levels of nitrogen, phosphorus and sediment in rivers that drain into the bay and harm its ecology. The EPA says farm runoff is the single largest source of pollutants in the Chesapeake Bay.