TagArlene Brown(3)

received your call to the noise information line on October 171h, 1999. Your message identified two areas of concern, low lli.rcraft over your neighborhood and jet noise after 10:00 p.m. The following information addresses these concerns. Small aircraft arriving and departing Sea-Tac Airport do not follow the same flight paths as the larger jets. This is primarily a safety and capacity issue. Because the smaller propeller aircraft fly at a slower rate,than the jets, they are turned early to move out of the way of the faster moving jets. Jet aircraft remain in a straight-out departure route for several miles. For the same reason, the propeller aircraft arrivals are also tum onto ' approach close in to the airport. Either way this puts some of the smaller aircraft over the ·Normandy Park area. I have enclosed a map, which depicts the propeller flight path, and your neighborhood is highlighted. Because these aircraft are arriving and departing, the altitudes are lower than aircraft overflying the area. Sea-Tac Airport does have a restriction on the older louder aircraft between the hours of 10:00 p.m. and 7:00a.m. The Port of Seattle does not legally have the ability to restrict the newer aircraft. Although tl~e newer engines are quieter, a large, heavily loaded jet airplane may still be very noticeable. We continue to work with the airline operators to minimize the number of louder aircraft at night. Weather conditions such as fog, or wind from the east may also increase noise levels for you…

To: Mr. Frederick C. Stouder, City Manager City of Burien 415 SW 150th St. Burien WA 98166-1973 Subject: Draft prepared by South King County Impact Assistance and Mitigation Studies Team (Enclosed in your October 21, 1996 letter to City Council) Please forward this to South King County Impact Assistance and Mitigation Studies Team. As an engineering manager, I appreciate how constrained the team's task is by budget and schedule so please take these comments as a desire to help. Having spent over 1000 hours studying the Environmental Impact Statements, regulations, and related text books, I hope there is time to consider my comments. I apologize being so late but I was unaware of your Open Houses until the last one that Citizens Against Sea-Tac Expansion (CASE) called me about. No copies of the report were available that night. Please contact me if you would like any data or information. As an aerospace manager, it would be inappropriate for me to take your calls at my office. You may leave a message at my home and I will return your call. If you call between AM and 8 AM you will probably find me at home. Sincerely, CL~0 A. Brown 239 SW 189 PI Seattle, WA 98166 (206) 431-8693 Enclosures: Enclosure 1 : Comments on Draft Study Enclosure 2 : Normandy Park Real Estate Data Summary Enclosure 3 : Normandy Park Third Quarter 1996 real estate data Enclosure 4 : Current and Planned Haul Truck Mitigation Enclosure 5 : References and…