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3.10.6 Potential Effect: Project buildings may interfere with the Belmont Slough Departure from Runway 30, as well as with arrivals in the local traffic pattern. Findings: The GID hereby makes finding (1). Facts in Support of Findings: (a) The base leg or crosswind tums would most likely occur anywhere from 7,200 to 10,000 feet from the ATCT (or from 5,600 to 8,400 feet from the nearest runway end). At a distance of 7,200 feet from the tower, controllers would not be able to see any objects below 200 feet MSL behind the 10-story building. At a distance of 10,000 feet from the control tower, only objects behind the 10-story office building below 265 feet MSL would not be visible to controllers. This would not represent a problem, as aircraft in these areas operate well above these altitudes. 3.10.7 Potential Effect: The 10-story building may interfere with aircraft executing a base leg approach to Runway 12 over the Project site. Findings: The GID hereby makes finding (1). Facts in Support of Findings: (a) Exhibit 25 of the Airport Study depicts arrival profiles for Runway 12 from the pattern altitude of 800 feet MSL directly over the location of the 10- story building for three scenarios: (1) a close-in pattern (approximately 2,300 feet abeam the runway), (2) a left base approach at 60 knots; and (3) a left base approach at 100 knots. From this Exhibit, it can be determined that an aircraft in the traffic pattern or on a base leg approach to Runway 12 overflying the 10-story office building would be at altitudes ranging from about 304 to 497 feet MSL, or from 157 to 352 feet over the top of the building. (b) Exhibit 25 also shows the relationship of the existing Paragon building to such approaches. As can be seen from the exhibit, aircraft currently fly much closer to the top of the Paragon building (from 131 to 276 feet) than they would to the Project (from 153 to 346 feet). -25- GIDEIRFD,DOC 7/23?96 5:44 PM