Palo Verde

Palo Verde Nuclear Power Plant - 36 miles W of Phoenix, AZ.

FAA has issued a NOTAM (FDC 1/1980) prohibiting all General Aviation flights within a 10 nautical mile radius and below 18,000 feet of numerous nuclear sites throughout the United States.

http://www.aopa.org/whatsnew/newsitems/2001/notams.html