Regions of the Nuclear Regulatory Commission
The Nuclear Regulatory Commission has divided the US territory into four regions: Tasks. These four regions oversee the operation of 104 power-producing reactors, and 36 non-power-producing reactors. This oversight is done on several levels, for example: Region I. Headquartered in King of Prussia, Pennsylvania, Region I oversees 15 plants in the north-eastern United States. Region II. Headquartered in Atlanta, Georgia, Region II oversees 18 plants in the south-eastern United States. Region III. Headquartered in Lisle, Illinois, Region III oversees 15 plants in the northern mid-western United States. Region  IV. Headquartered in Arlington, Texas, Region IV oversees 12 plants in the southern midwestern and the western United States. Former regions. The NRC previously had five regions. Region V was headquartered in Walnut Creek, California and was responsible for activities in the seven far-west states: Alaska, Arizona, California, Hawaii, Nevada, Oregon and Washington. The NRC decided in September 1993 to consolidate Regions IV and V into a single Region headquartered in Arlington, Texas. On April 4, 1994, NRC Region V was abolished, and the NRC Region IV office in Arlington, Texas was given expanded responsibilities to include the seven  states formerly governed by Region V. The former NRC Region V office in Walnut Creek remained open as the redesignated Walnut Creek Field Office, supporting resident inspection activities at power plants in the Pacific states of Washington, Oregon and California until October 1, 1998, when the Walnut Creek Field Office was abolished to further reduce costs.