Minimum of four (4) years of progressive experience, including the preparation of detailed Airport Master Plans, Airport Layout Plans, and environmental documents for airports including EIS, EAs, CATEXs and Noise Modeling for both general aviation and air-carrier part 139 airports. Today, Bolton & Menk has more than 1,000 employees throughout more than 35 locations in Minnesota, Iowa, North Dakota, North Carolina, South Carolina, and Colorado providing services to more than 400 communities and agencies.