Establishment of Class E Airspace; Watford City, ND, and modification of Class E Airspace, Williston, ND

This action establishes Class E airspace at Watford City, ND, and modifies Class E airspace at Williston, ND. A Global Positioning System (GPS) Standard Instrument Approach Procedure (SIAP) to Runway (Rwy) 30 has been developed for Watford City Municipal Airport. Controlled airspace extending upward from 700 to 1200 feet above ground level (AGL), and controlled airspace extending upward from 1200 AGL, is needed to contain aircraft executing the approach. This action creates controlled airspace with a radius of 7.4 miles for the Watford City Airport, and enlarges the controlled airspace at Williston, ND, to the southeast to accommodate the approach.