This standard presents acceptable methods and practices for the control of external corrosion on non-mobile structures constructed of steel, stainless steel, cast iron, or aluminum immersed in fresh water through the use of cathodic protection (CP). Such structures may include, but are not limited to trash racks, dams, gates, dock pilings, sheet pilings, and other similar structures located in lakes, rivers, streams, canals, or other similar bodies of fresh water.