Ronald Reagan Washington National Airport. Assessment of Measured Aircraft Noise Levels [Appended] February 16, 2017

Transcription

1 Ronald Reagan Washington National Airport Assessment of Measured Aircraft Noise Levels [Appended] February 16, 2017

2 Presentation Outline Methodology Summary of Data Assessed High-Level Overview Focused Review of Selected Sites General Findings 2

3 Methodology Selected sample data representative of the four seasons from the MWAA noise monitoring system Focused on early morning and late night hours Assessed individual noise events from aircraft operating at DCA recorded at each of the monitors: Maximum noise level (Lmax) Type of operation (arrival or departure) and runway used Aircraft type Airline or operator and flight number 3

4 Noise Data Assessed Monday, Wednesday, and Saturday of four representative weeks in 2016: January 11, 13, and 16 April 4, 6, and 9 July 4, 6, and 9 October 3, 5, and 8 Early morning and late night hours: Early morning: 5 a.m. to 7 a.m. Late night: 10 p.m. to 1 a.m. of the following morning Approximately 65 to 68 percent of the assessed data reflected North Flow conditions 4

5 Maximum Noise Level (Lmax) 5

6 Common Sounds on the A-Weighted Decibel Scale 6

7 Noise Monitor Stations Overall SOURCE: Esri, HERE, DeLorme, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), MapmyIndia, NGCC, OpenStreetMap contributors, and the GIS User Community, January 2017 (basemap); Airport Noise Office Metropolitan Washington Airport s Authority, January 2017 (runways and monitors). 7

8 Noise Monitor Stations Early Morning Hours SOURCE: Esri, HERE, DeLorme, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), MapmyIndia, NGCC, OpenStreetMap contributors, and the GIS User Community, January 2017 (basemap); Airport Noise Office Metropolitan Washington Airport s Authority, January 2017 (runways and monitors). 8

9 Noise Monitor Stations Late Night Hours SOURCE: Esri, HERE, DeLorme, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), MapmyIndia, NGCC, OpenStreetMap contributors, and the GIS User Community, January 2017 (basemap); Airport Noise Office Metropolitan Washington Airport s Authority, January 2017 (runways and monitors). 9

10 NMT 2 (Cabin John) 10

11 NMT 3 (Langley Forest) 11

12 NMT 4 (Potomac Palisades) 12

13 NMT 5 (Chain Bridge) 13

14 NMT 6 (Georgetown) 14

15 NMT 7 (Rosslyn) 15

16 NMT 8 (Old Town) 16

17 NMT 9 (Springfield) 17

18 NMT 10 (Fort Foote) 18

19 NMT 11 (Marlan Forest) 19

20 NMT 12 (Tantallon) 20

21 NMT 17 (Southwest DC) 21

22 NMT 19 (North Mt. Vernon) 22

23 NMT 20 (Dumbarton) 23

24 NMT 22 (Avenel) 24

25 Generalized Findings Overall Noise Levels and Noise Events Data from NMTs along the river show comparable noise levels on both sides for the majority of sites, suggesting general adherence to the river course Deviation begins to the north near the Cabin John site due to locations of NMTs and turns off of the river course To the south, noise levels are similar on both sides although the numbers of events recorded is higher to the east likely due to predominance of North Flow during the assessment period and the final approach course 25

26 Generalized Findings Individual Aircraft Noise Levels Departures and arrivals produced similar ranges of Lmax values at the various NMTs No aircraft type appeared to be the greatest culprit, producing the highest Lmax* Lmax values of some regional jets (e.g., Embraer 170/175) were in the same range with mainline jets (e.g., 737, A320) The highest ranges of Lmax recorded at each site did not represent the majority of recorded Lmax values *Note that very few events from MD-80s were recorded due to the hours assessed and the penalties associated with their operation during early morning and late night hours. 26

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