Portable Noise Monitor Report Chicago O Hare International Airport Site 213 475 W. Hutchinson Street, Chicago April 8, 217 through May 3, 217 USH5-ILH19-ILS1-CHI45 Visit the O Hare Noise webpage on the Internet at www.flychicago.com/ordnoise
Portable Noise Monitor Report City of Chicago Department of Aviation Portable Noise Monitor Report Chicago O Hare International Airport Site 213 deployed at 475 W. Hutchinson Street, Chicago April 8, 217 through May 3, 217 Report Descriptions Background Installed in 1996, the Airport Noise Management System (ANMS) enables the City of Chicago to monitor the amount of noise being generated over the communities surrounding O Hare by the aircraft operating at the Airport. The ANMS collects, analyzes and processes data from a number of sources of information including a network of 44 noise monitors around O Hare and Midway, FAA radar data, weather data and noise complaints. Over 15, flights and 4, noise events are recorded by the ANMS each month for the Chicago Department of Aviation (CDA). The City of Chicago and the O Hare Noise Compatibility Commission utilize data from the ANMS to facilitate the development and management of noise abatement programs at the Airport. The purpose of the portable noise monitors is to provide aircraft noise information at specific residences that may be of interest to citizens living around the airport. The City also uses this data to supplement the noise data measured by the permanent sites. The following paragraphs summarize pertinent information from the data collected at the portable noise monitoring site. Description of Noise Monitoring Location The noise monitor was placed at 475 W. Hutchinson Street, Chicago between April 8 and May 3, 217. The monitor was located approximately 8.5 miles south east from the center of the airport, as Chicago Department of Aviation Page 1 Printed June 217
Portable Noise Monitor Report shown on the vicinity map on page 4. The operations that primarily affected this location during the monitoring period were Arrivals on Runway 28C as shown on the map on page 13. Runway Use Reports O Hare has eight runways that are all utilized at different times depending primarily upon the prevailing wind conditions on the airfield, as well as any runway maintenance. Aircraft performance requirements make it necessary for aircraft to depart and land into the wind for safety purposes. The Runway Use Report presents the average daily runway use and the percentage of use for each runway. The percentage of use of each runway is also shown graphically at the bottom of the page for departures and arrivals separately. Noise Level Reports The Noise Level Reports summarize measurement results at the noise monitoring site. The data presented summarizes the noise levels and the individual measured aircraft events. The noise data presents the measured noise during the period of the measurements for aircraft, community and total noise in Day-Night Average Sound Levels (DNL s). DNL is a 24-hour time-averaged sound exposure level with a 1 decibel (db) nighttime (1 p.m. to 7 a.m.) weighting to account for the lower background noise levels during the nighttime hours. Aircraft noise is noise attributable to aircraft operating at O'Hare. Community noise is noise from all other sources such as highways, railroads as well as background noise. Total noise is both sources combined. The relative noise level of each of these sources is also shown graphically in this report. The daily aircraft noise level varies from day to day. This is primarily because different runways are used under different wind conditions which affect where the aircraft fly. The daily noise levels measured, while this monitor was at this location, are only a short sample and are indicative of the levels during the time period when the monitor was installed. It is not necessarily representative of the noise level on an annual basis. Chicago Department of Aviation Page 2 Printed June 217
Portable Noise Monitor Report The average number of measured aircraft events per day is also summarized in the table for each site. This includes a summary of all measured aircraft events as well as the number of noise level events above 85 db. The total measured aircraft events are also shown graphically in the table on page 1. Top Noise Level Reports The 25 loudest aircraft noise events, while the monitor was at this location, are shown in the attached report with the highest event presented at the top. This report lists the date and time of the noise event, the noise level of the event and the type of aircraft that was identified as causing that event. The noise data presented for each aircraft event is the L max. The L max is the maximum or peak level that the noise reached during the aircraft overflight. When comparing Aircraft Noise Levels to other everyday sounds the L max is the appropriate measure to use. Operational information includes which runway the aircraft used, if it was a departure or arrival (D or A), the airline, and the aircraft type. FAR Part 36 is a government regulation that certifies the noise levels of different aircraft types with Stage 2 generally being the louder aircraft and Stage 3 the quieter aircraft. All louder Stage 2 aircraft weighing more than 75, lbs. were phased out of operation after December 31, 1999. The data shows that the aircraft that generated the highest noise events were usually arrivals by B738 s (Boeing 737-8). Aircraft Operations within the Vicinity of the Noise Monitor The map on page 13 shows a graphical representation of traffic that flew within the vicinity of the monitoring location. A virtual gate was established to extend one mile on either side of the monitoring location. The day that presented the highest daily level of aircraft noise for the monitoring period was chosen to display. Green tracks represent aircraft that departed O Hare and red tracks represent arrivals that flew within the vicinity of the monitoring location. Also included in the analysis is a penetration plot showing the altitudes of the aircraft that flew through the established gate. Chicago Department of Aviation Page 3 Printed June 217
Runway Use Report Period: April 8, 217 to May 3, 217 Time of Day: All Hours Runway Use (All Hours) Source: Airport Noise Management System (ANMS) Runway Utilization 4L 4R 9L 9R 1L 1C 1R 15 22L 22R 27L 27R 28L 28C 28R 33 Average Daily Operations Departures 3 269 228 1 216 1 2 4 22 Arrivals 1 179 11 32 23 82 1 1 277 162 17 24 n/a Percentage Utilization Departures % % % 24% 2% % % % 19% % % % % % 35% 2% Arrivals % % 16% 1% 3% 18% 7% % % % 24% 14% % 15% 2% % Departures Arrivals 4% 4% 3% 3% 2% 2% 1% 1% % % Percentage Departure Utilization Percentage Arrival Utilization #RE # 16 14 2 24 1 24 35 2 3 2 18 15 7 # # 19 Chicago Department of Aviation Page 5 Printed June 217
Noise and Aircraft Events Report Period: April 8, 217 to May 3, 217 Site: 213-475 W. Hutchinson Street Day Measured DNL Aircraft Community Total Aircraft Noise Events Daily Loud Events Events >85 Lmax Apr 8 55.8 63.9 64.5 176 Apr 9 62.8 67.8 69. 227 18 Apr 1 56.3 63. 63.8 185 4 Apr 11 59.7 63.6 65. 249 11 Apr 12 56.6 65.2 65.8 158 2 Apr 13 5.8 61.6 61.9 28 Apr 14 55.4 67.7 68. 44 3 Apr 15 52.3 62.5 62.9 182 Apr 16 56.1 62.6 63.8 231 2 Apr 17 56.3 63. 63.8 17 1 Apr 18 58. 62.6 63.9 242 2 Apr 19 57.5 69.5 69.8 95 3 Apr 2 58.3 61. 62.8 32 1 Apr 21 56.1 66.2 66.6 144 1 Apr 22 4. 6.4 6.4 14 Apr 23 49.8 62.8 63. 57 Apr 24 49.1 62. 62.2 21 2 Apr 25 55.7 62. 62.9 14 3 Apr 26 55.3 6.2 61.4 233 Apr 27 54.9 58.8 6.3 262 1 Apr 28 55.4 65.6 66. 9 1 Apr 29 51. 66.4 66.6 32 1 Apr 3 47.2 65.7 65.8 55 1 May 1 56.8 64.2 65. 178 6 May 2 61.9 61.7 64.8 295 3 May 3 59. 64.1 65.3 94 1 Average DNL Average Average Aircraft Community Total All Events >85 Lmax 56.8 64.4 65.1 146 3 Chicago Department of Aviation Page 6 Printed June 217
Hourly Noise Level Report Period: April 8, 217 to May 3, 217 Site: 213-475 W. Hutchinson Street Metric: Aircraft Noise Events Date Hour Of The Day 1 2 3 4 5 6 7 8 9 1 11 12 13 14 15 16 17 18 19 2 21 22 23 Count Apr 8 6 1 1 5 11 16 7 7 8 6 14 3 1 7 18 17 15 12 5 5 1 1 176 Apr 9 2 1 2 5 13 1 1 7 2 3 16 14 2 16 2 25 1 16 1 2 1 4 227 Apr 1 1 1 2 9 6 11 19 1 12 9 15 7 18 17 7 6 22 1 2 6 1 3 185 Apr 11 1 5 16 11 1 4 14 9 12 1 18 21 24 25 19 19 7 11 1 3 249 Apr 12 2 1 1 1 1 13 25 16 1 4 22 15 19 2 1 7 4 4 1 158 Apr 13 1 4 1 2 2 1 6 3 1 3 3 1 28 Apr 14 1 1 4 1 1 2 1 1 5 6 13 5 1 2 44 Apr 15 1 1 1 4 4 7 8 17 6 14 16 14 15 23 19 18 1 2 2 182 Apr 16 1 1 1 5 4 7 12 16 7 13 5 9 18 19 13 21 18 27 19 6 3 2 4 231 Apr 17 2 1 8 12 1 16 13 5 13 5 2 5 2 1 3 1 1 2 1 1 3 17 Apr 18 1 1 1 9 24 19 1 8 12 4 9 16 15 21 19 24 17 16 1 2 2 2 242 Apr 19 1 11 15 18 6 8 17 2 2 2 1 6 2 4 95 Apr 2 1 1 4 2 2 5 13 15 12 8 14 1 14 19 23 25 3 29 17 26 3 18 7 4 32 Apr 21 5 1 3 9 22 15 16 15 21 9 3 3 3 2 2 5 5 3 2 144 Apr 22 1 2 1 1 2 1 1 1 2 1 1 14 Apr 23 2 3 1 4 2 6 15 2 14 1 3 1 1 2 57 Apr 24 2 3 1 4 2 1 4 1 1 2 21 Apr 25 2 6 4 16 25 14 2 1 1 2 9 3 1 14 Apr 26 1 2 15 9 16 1 1 1 13 13 19 1 18 19 21 16 18 2 2 3 6 233 Apr 27 3 1 4 7 19 1 6 14 1 2 17 14 17 22 27 17 14 2 18 1 1 262 Apr 28 1 1 1 5 7 9 23 1 2 11 4 3 4 1 13 1 2 1 9 Apr 29 2 1 1 2 6 13 1 2 2 1 1 32 Apr 3 2 3 2 1 4 4 8 2 2 1 6 2 7 8 3 55 May 1 1 14 1 22 9 6 1 9 15 14 3 2 4 3 2 16 1 1 5 178 May 2 3 1 4 11 19 21 12 18 14 11 21 2 11 23 2 23 16 17 14 3 3 1 295 May 3 3 2 7 13 9 12 11 7 13 7 1 1 3 4 1 94 Average 1 1 2 7 9 11 8 6 1 5 9 9 9 9 9 1 9 8 5 4 2 2 146 Aircraft Noise Events are described on page 2 of this report. Chicago Department of Aviation Page 7 Printed June 217
Hourly Noise Level Report Period: April 8, 217 to May 3, 217 Site: 213-475 W. Hutchinson Street Metric: Aircraft Leq Date Hour Of The Day 1 2 3 4 5 6 7 8 9 1 11 12 13 14 15 16 17 18 19 2 21 22 23 DNL Apr 8 47 39 39 48 51 52 51 49 51 56 59 5 56 53 58 56 55 53 48 5 43 39 56 Apr 9 42 45 43 48 54 52 51 65 73 61 62 67 59 53 54 56 5 62 65 59 42 53 63 Apr 1 37 38 4 52 48 53 55 56 56 54 6 52 54 54 52 59 65 42 47 46 36 48 56 Apr 11 41 47 52 51 53 49 58 56 68 53 67 62 6 63 56 54 52 54 49 47 6 Apr 12 42 37 41 37 5 53 55 53 53 52 63 59 59 42 44 53 47 45 38 57 Apr 13 47 52 53 46 38 48 55 49 47 49 47 5 51 Apr 14 44 48 51 45 45 4 48 48 48 5 64 65 39 47 55 Apr 15 4 35 39 48 45 52 52 54 51 54 55 54 54 57 54 55 52 48 42 52 Apr 16 39 39 49 49 5 51 5 54 52 55 49 54 61 56 56 58 57 57 55 53 48 41 44 56 Apr 17 4 42 47 52 56 56 58 5 54 49 41 5 62 5 47 5 45 48 38 44 46 56 Apr 18 35 39 47 53 56 54 53 55 54 51 51 54 54 55 56 6 58 65 57 41 42 44 58 Apr 19 36 54 53 55 5 54 54 42 52 55 58 55 46 58 58 Apr 2 45 45 5 45 45 52 56 53 53 52 52 55 54 56 57 59 6 6 59 58 47 56 5 48 58 Apr 21 47 43 42 52 56 54 54 56 57 55 46 56 47 52 52 5 54 53 38 56 Apr 22 34 47 38 44 41 43 47 41 44 39 36 4 Apr 23 45 45 38 45 42 54 53 5 54 46 43 41 45 45 5 Apr 24 42 61 43 51 45 38 47 4 42 42 49 Apr 25 48 5 49 55 68 56 54 46 42 5 51 43 39 56 Apr 26 45 41 51 49 54 53 54 51 56 53 56 55 57 6 56 54 54 45 5 46 48 55 Apr 27 44 36 46 47 56 53 51 54 53 62 56 55 56 56 58 55 54 55 55 43 39 55 Apr 28 43 42 37 48 49 53 66 44 48 53 53 46 49 48 54 4 43 34 55 Apr 29 48 52 35 43 5 58 48 45 49 42 44 51 Apr 3 41 47 56 37 48 44 47 4 5 42 48 43 5 49 45 47 May 1 43 53 54 57 53 52 53 6 54 53 47 5 48 55 56 65 38 4 47 57 May 2 45 44 46 53 56 56 55 55 54 51 56 59 55 74 55 56 54 55 57 61 44 52 62 May 3 45 42 5 56 54 53 56 54 53 51 7 43 5 52 44 59 Energy Average 41 38 38 41 45 5 52 55 52 55 6 53 6 58 56 6 54 55 55 55 56 54 46 45 57 Note: ## is aircraft events above 65 db daytime (7 a.m. - 1 p.m.) or 55 db nighttime (1 p.m. - 7 a.m.) Chicago Department of Aviation Page 8 Printed June 217
Noise Level Graph Report (DNL) Period: April 8, 217 to May 3, 217 Site: 213-475 W. Hutchinson Street Aircraft, Community and Total DNL Aircraft Community Total 75 7 65 Decibels (dba) 6 55 5 45 4 35 8 9 1 11 12 13 14 15 16 17 18 19 2 21 22 23 24 25 26 27 28 29 3 1 2 3 Day Of The Month Chicago Department of Aviation Page 9 Printed June 217
Aircraft Noise Events Graph Report (Lmax) Period: April 8, 217 to May 3, 217 Site: 213-475 W. Hutchinson Street 5 Total Number of Measured Aircraft Noise Events 45 4 Number of Events 35 3 25 2 15 1 5 2 31 42 53 64 75 86 97 18 dba Max Noise Levels Chicago Department of Aviation Page 1 Printed June 217
Loudest Aircraft Noise Events Report Period: April 8, 217 to May 3, 217 Site: 213-475 W. Hutchinson Street Aircraft Airline Event Time Aircraft Stage Ops 1 Rwy Lmax Graph Of Lmax Apr 12, 1:3 B738 3 A 28C 95.3 Apr 1, 18:4 B737 3 A 28C 93.2 Apr 18, 19:26 A319 3 A 28C 92.8 May 1, 11:5 B738 3 A 28C 91.9 Apr 9, 13:21 B737 3 A 28C 91.5 Apr 9, 13:51 A321 3 A 28C 91.4 Apr 9, 2:42 B739 3 A 28C 91.4 Apr 11, 12:19 B738 3 A 28C 91.3 Apr 11, 12:32 A32 3 A 28C 91.3 Apr 11, 14:33 A32 3 A 28C 91.2 Apr 9, 1:4 E19 3 A 28C 91.1 Apr 9, 12:4 B738 3 A 28C 91. Apr 14, 2:4 B744 3 A 28C 91. Apr 11, 14:35 B763 3 A 28C 9.9 May 1, 2:23 CRJ7 3 A 28C 9.5 Apr 27, 12:22 A32 3 A 28C 9.2 Apr 9, 13:15 B772 3 A 28C 89.9 Apr 21, 13:11 E17 3 D 1L 89.9 Apr 9, 1:42 CRJ2 3 A 28C 89.8 May 1, 2:26 CRJ7 3 A 28C 89.8 Apr 11, 17:44 CRJ2 3 A 28C 89.5 Apr 25, 13:18 B738 3 A 28C 89. Apr 9, 14:11 CRJ7 3 A 28C 88.6 Apr 14, 21:53 B77L 3 A 28C 88.6 Apr 9, 2:4 B738 3 A 28C 88.5 7 85 1 1 "D" represents departures, "A" represents arrivals. Chicago Department of Aviation Page 12 Printed June 217
Gate Location Report Period: April 9, 217 Operations: Arrivals and Departures Site: 213-475 W. Hutchinson Street Summary Arrivals: 343 Operations Left of Center: 17 (5%) Source: Airport Noise Management System (ANMS) Chicago Department of Aviation Departures: 9 : Left Boundary of Gate Page 13 Total Operations: 352 Operations Right of Center: 335 (95%) : Center of Gate : Right Boundary of Gate Printed June 217
Aircraft Altitude Report Period: April 9, 217 Operations: Arrivals and Departures Site: 213-475 W. Hutchinson Street Arrivals: 343 Operations Left of Center: 17 (5%) Summary Departures: 9 Total Operations: 352 Operations Right of Center: 335 (95%) 9, 8, 7, Above Airport Elevation (feet) 6, 5, 4, 3, 2, 1, -1. -.8 -.6 -.4 -.2..2.4.6.8 1. Deviation From Center of Gate (miles) Note: Airport elevation is based on published aeronautical charts Source: Airport Noise Management System (ANMS) Chicago Department of Aviation Page 14 Printed June 217
O Hare Noise Hotline: 1-8-435-9569 www.flychicago.com/ordnoise