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The proposed structure would be located approximately 1 nautical mile southwest of Hamel, Minnesota, at a site 2,250 feet northwest of the intersection of Medina Road and Hunter Drive; and 8.3 nautical miles southwest of Crystal Airport, Minneapolis, Minnesota. The proposal exceeds the obstruction standards of Federal Aviation Regulations, Part 77, as follows: Section 77.23(a)(1) by 490 feet - a height exceeding 500 feet above ground level at the site of the object. Section 77.23 (a)(3) by 462 feet - a height that increases a minimum instrument flight altitude within a terminal area (TERPS criteria). Section 77.23(a)(4) by 662 feet - a height that increases a minimum obstruction clearance altitude (MOCA) (Enroute criteria). In addition, the proposal would necessitate increases to Minimum Sector Altitudes (MSA) on instrument approach procedures at the following airports: Minneapolis-St.Paul International Airport Gateway North Industrial Airport Anoka County -Blaine Airport (Janes Field) Crystal Airport Flying Cloud Airport Buffalo Municipal Airport Lakeville Municipal Airport The proposal was circularized for public comment by letter dated February 2, 1982. Nine letters of objection were received as a result of circularization. Mr. Wendell Setterberg, Airport Manager of Buffalo Municipal Airport, and President of Ready Flying Service, Inc., objected to raising IFR minimums. He said this would increase the cost of training IFR students because aircraft would be required to climb to higher altitudes after a practice missed approach before proceeding with their next approach. Mr. Harold H. Tearse, Jr., objected to the adverse effect the proposal would have on IFR approach procedures. Ms. Lorraine Winter, President of Minnesota Flying Farmers, stated that the proposal would be a hazard to pilots during poor weather conditions. She compared the proposed structure with a tower in Sioux Falls that was hit twice by aircraft. Page 2 of 8 Pages Aeronautical Study No. 81-AGL-1556-OE