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3.10.15 Potential Effect: Construction of the Project could expose people to frequent <br /> and/or high levels of aircraft noise. <br /> <br /> Findings: The GID hereby makes finding (1). <br /> <br /> Facts in Support of Findings: <br /> <br /> (a) Airport noise concerns are normally directed at residential land uses. <br /> Office and commercial uses are generally deemed compatible with all but the <br /> highest noise levels. <br /> <br /> (b) The Project is located within the CNEL 55-60 dB noise contour for the <br /> Airport. Business and professional uses are considered compatible with noise <br /> levels up to CNEL 70 dB. <br /> <br /> (c) The 1 O-story building will not reflect or otherwise increase aircraft noise in <br /> residential areas. <br /> <br />3.10.16 Potential Effect: When operating in the Airport traffic pattern, pilots seeking to <br /> avoid Project office buildings might tend to operate their aircraft further to the <br /> east. Pilots also might choose, for safety reasons, to avoid the project area by <br /> flying farther out. Both of these circumstances might create an increase in noise <br /> over residential areas in Redwood Shores. This would affect citizens in the <br /> Belmont Channel area and along Bridge Parkway. <br /> <br /> Findings: The GID hereby makes finding (1). <br /> <br /> Facts in Support of Findings: <br /> <br /> (a) The analyses conducted in order to evaluate safety issues concluded that <br /> the 10-story building is not an obstruction to air navigation. Therefore, aircraft <br /> will not have to avoid it by flying around the building and over existing residential <br /> areas. As a result, noise levels from aircraft will not increase in these residential <br /> <br /> areas. <br /> <br /> (b) The location of the 1 O-story office building would not require aircraft in <br /> the traffic pattern to fly their downwind leg further east, thereby moving noise <br /> further into Redwood Shores residential areas. The location of the building is <br /> about 1,500 feet offthe extended runway centerline. The downwind leg of the <br /> traffic pattern is typically flown from 1,000 to 3,000 feet abeam the runway. <br /> This would place the building within the inner portion of the traffic pattern. The <br /> outer portion of the pattern would be over the noise sensitive area of Redwood <br /> <br /> -33- <br />G1DEIRFD.DOC <br />7/23/96 5:44 PM <br /> <br /> <br />