Portable Noise Monitor Report Chicago O Hare International Airport Site 241 61 Grange Road, Elk Grove Village October 3, 215 through October 19, 215 USH8-ILH55-ILS28 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 241 deployed at 61 Grange Road, Elk Grove Village October 3, 215 through October 19, 215 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 61 Grange Road, Elk Grove Village between October 3 and October 19, 215. The monitor is located approximately 5 miles northwest from the center of the airport, as Chicago Department of Aviation Page 1 Printed December 216
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 9L 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 summarizes 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 effect 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 December 216
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 departures by B744 s (Boeing 747-4). 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 December 216
Runway Use Report Period: October 3, 215 to October 19, 215 Time of Day: All Hours Runway Use (All Hours) Source: Airport Noise Management System (ANMS) Runway Utilization 4L 4R 9L 9R 1L 1C 1R 14R 22L 22R 27L 27R 28L 28C 28R 32L Average Daily Operations Departures 3 173 123 1 297 2 526 12 Arrivals 159 39 12 193 5 345 22 1 247 26 n/a Percentage Utilization Departures % % % 14% 1% % % % 24% % % % % % 43% 9% Arrivals % % 13% 3% 1% 16% % % % % 28% 17% % 2% 2% % Departures Arrivals 5% 5% 4% 4% 3% 3% 2% 2% 1% 1% % % Percentage Departure Utilization Percentage Arrival Utilization #RE # 13 17 9 14 3 28 43 1 1 2 16 2 # # 24 Chicago Department of Aviation Page 5 Printed December 216
Noise and Aircraft Events Report Period: October 3, 215 to October 19, 215 Site: 241-61 Grange Road Day Measured DNL Aircraft Community Total Aircraft Noise Events Daily Loud Events Events >85 Lmax Oct 3 62.3 52.3 62.7 45 Oct 4 62.1 51. 62.4 473 Oct 5 6.8 49.1 61. 514 Oct 6 62. 52.1 62.6 5 Oct 7 6.1 56. 61.5 386 Oct 8 56.9 6. 61.7 132 Oct 9 62.5 53.8 63. 485 Oct 1 55.1 54.2 57.7 17 Oct 11 58. 55. 59.8 151 1 Oct 12 59.3 55.6 6.8 17 1 Oct 13 59.2 55.4 6.8 174 Oct 14 58. 53.3 59.2 146 1 Oct 15 57.2 6.6 62.3 117 Oct 16 57.2 55.4 59.4 134 1 Oct 17 55.8 51.9 57.3 88 Oct 18 57.4 52.2 58.5 139 1 Oct 19 57.8 56.5 6.2 155 Average DNL Average Average Aircraft Community Total All Events >85 Lmax 59.5 55.4 61. 252 Chicago Department of Aviation Page 6 Printed December 216
Hourly Noise Level Report Period: October 3, 215 to October 19, 215 Site: 241-61 Grange Road 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 Oct 3 24 3 29 18 27 35 35 25 32 23 32 33 2 26 16 45 Oct 4 22 29 17 25 35 22 41 34 33 31 37 35 27 4 33 12 473 Oct 5 22 35 33 24 36 35 38 33 37 35 4 35 35 38 31 7 514 Oct 6 34 37 32 3 29 26 4 28 3 36 35 34 35 39 29 6 5 Oct 7 2 1 16 8 8 7 9 17 35 32 36 36 35 34 34 42 3 4 386 Oct 8 2 8 8 4 16 11 3 11 9 4 1 6 1 8 5 7 7 2 1 132 Oct 9 1 35 39 26 2 28 34 39 27 36 4 37 33 38 36 26 6 2 485 Oct 1 1 1 6 7 3 3 2 5 7 8 5 3 5 2 16 5 7 2 1 17 Oct 11 2 2 1 7 7 2 6 4 4 1 15 12 13 11 12 15 6 1 3 2 7 151 Oct 12 1 2 1 2 23 7 4 6 2 5 17 12 9 8 11 9 13 28 8 1 1 17 Oct 13 1 1 1 2 4 4 2 5 2 11 11 17 14 13 9 27 13 2 5 1 2 174 Oct 14 2 1 9 5 2 8 6 2 11 5 6 14 8 16 5 16 2 8 2 146 Oct 15 1 3 1 3 19 4 2 3 6 2 7 7 4 4 3 8 15 9 7 7 1 1 117 Oct 16 2 1 2 4 4 2 3 5 8 1 15 6 6 1 1 9 8 8 1 2 134 Oct 17 1 1 1 2 5 5 1 7 7 4 3 4 13 6 6 6 4 2 4 4 2 88 Oct 18 1 4 3 1 1 8 5 1 1 4 9 7 9 9 1 11 5 13 12 11 5 139 Oct 19 1 1 1 1 3 14 7 3 9 8 2 8 11 9 5 11 5 14 1 13 7 1 2 155 Average 1 1 1 17 14 1 1 13 13 2 17 18 17 18 18 2 19 15 5 2 1 252 Aircraft Noise Events are described on page 2 of this report. Chicago Department of Aviation Page 7 Printed December 216
Hourly Noise Level Report Period: October 3, 215 to October 19, 215 Site: 241-61 Grange Road 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 Oct 3 61 63 63 61 63 63 64 63 64 62 64 65 62 63 61 62 Oct 4 61 62 59 62 63 61 64 64 63 62 64 64 63 63 63 59 62 Oct 5 58 61 6 6 62 62 62 62 63 63 63 62 63 63 61 55 61 Oct 6 62 63 62 62 62 61 63 62 62 63 62 63 62 62 61 55 62 Oct 7 46 39 56 55 46 53 57 59 62 63 64 63 63 64 63 64 62 54 6 Oct 8 44 57 52 48 55 54 54 58 6 54 57 54 58 51 53 53 55 5 37 57 Oct 9 37 62 63 62 5 62 63 64 62 63 63 63 63 63 63 61 55 47 62 Oct 1 37 49 5 57 54 48 48 59 57 57 49 53 5 58 59 51 55 54 49 55 Oct 11 51 49 44 54 52 46 52 51 62 55 58 57 57 56 57 61 53 57 43 45 55 58 Oct 12 5 57 41 5 59 5 48 55 51 61 59 59 55 56 55 53 55 57 53 52 42 59 Oct 13 38 4 44 6 54 53 44 5 48 59 58 57 56 6 55 61 56 5 54 53 48 59 Oct 14 44 49 53 56 47 54 51 62 6 59 54 61 53 57 51 61 51 56 49 58 Oct 15 44 46 45 53 57 53 51 49 59 57 58 55 55 5 45 54 6 52 54 53 39 38 57 Oct 16 51 46 58 51 45 52 44 59 56 58 59 52 52 57 57 54 55 51 4 42 57 Oct 17 46 43 49 55 49 48 46 55 53 48 52 54 58 51 56 49 51 41 56 57 43 56 Oct 18 52 54 5 47 46 52 52 54 51 53 6 53 59 56 53 53 49 61 52 55 55 57 Oct 19 45 41 47 47 52 57 57 46 55 55 49 55 59 57 52 56 55 56 55 57 49 53 44 58 Energy Average 43 4 46 47 39 47 58 58 57 56 58 6 6 6 6 59 6 6 6 59 59 54 48 45 6 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 December 216
Noise Level Graph Report (DNL) Period: October 3, 215 to October 19, 215 Site: 241-61 Grange Road Aircraft, Community and Total DNL Aircraft Community Total 75 7 65 Decibels (dba) 6 55 5 45 4 35 3 4 5 6 7 8 9 1 11 12 13 14 15 16 17 18 19 Day Of The Month Chicago Department of Aviation Page 9 Printed December 216
Aircraft Noise Events Graph Report (Lmax) Period: October 3, 215 to October 19, 215 Site: 241-61 Grange Road 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 December 216
Loudest Aircraft Noise Events Report Period: October 3, 215 to October 19, 215 Site: 241-61 Grange Road Aircraft Airline Event Time Aircraft Stage Ops 1 Rwy Lmax Graph Of Lmax B744 Oct 11, 11:6 B744 3 D 28R 89.1 E17 Oct 14, 12:59 B744 3 D 28R 88.5 B763 Oct 12, 11:13 B744 3 D 28R 88.2 B744 Oct 18, 11:3 B744 3 D 28R 86.7 B744 Oct 16, 11:12 B744 3 D 28R 86.6 B744 Oct 14, 2:34 MD82 3 D 32L 84.6 B744 Oct 1, 11:56 B744 3 D 28R 84.5 A32 Oct 13, 12:34 B744 3 D 28R 84.2 MD11 Oct 14, 13:2 B772 3 D 28R 82.3 MD11 Oct 18, 18:4 B744 3 D 28R 82.3 MD11 Oct 14, 14:5 B748 3 D 28R 82.1 B744 Oct 12, 3:22 B744 3 D 28R 82. B744 Oct 15, 1:29 MD83 3 D 32L 81.9 B744 Oct 19, 13:1 B772 3 D 28R 81.9 Oct 15, 11:9 B744 3 D 28R 81.7 MD82 Oct 17, 21:56 MD82 3 D 32L 81.6 Oct 8, 13:46 B772 3 D 28R 81.6 B744 Oct 15, 14:2 B772 3 D 28R 81.5 E145 Oct 8, 13:49 B772 3 D 28R 81.4 B744 Oct 7, 14:4 B738 3 A 9L 81.3 B748 Oct 14, 16:51 B744 3 D 28R 81.1 MD11 Oct 4, 13:57 MD83 3 A 9L 81. B744 Oct 6, 13:19 E17 3 A 9L 8.9 B748 Oct 8, 17:57 B772 3 D 28R 8.9 MD11 Oct 7, 13:49 MD88 3 A 9L 8.9 75 85 95 1 "D" represents departures, "A" represents arrivals. Chicago Department of Aviation Page 12 Printed December 216
Gate Location Report Period: October 9, 215 Operations: Arrivals and Departures Site: 241-61 Grange Road Summary Arrivals: 482 Operations Left of Center: 2 (1%) Source: Airport Noise Management System (ANMS) Chicago Department of Aviation Departures: 1 : Left Boundary of Gate Page 13 Total Operations: 483 Operations Right of Center: 481 (99%) : Center of Gate : Right Boundary of Gate Printed December 216
Aircraft Altitude Report Period: October 9, 215 Operations: Arrivals and Departures Site: 241-61 Grange Road Arrivals: 482 Operations Left of Center: 2 (1%) Summary Departures: 1 Total Operations: 483 Operations Right of Center: 481 (99%) 6, 5, Above Airport Elevation (feet) 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 December 216
O Hare Noise Hotline: 1-8-435-9569 www.flychicago.com/ordnoise