Portable Noise Monitor Report Chicago O Hare International Airport Site 299 93 Wilshire Avenue, Elk Grove Village June 27, 217 through July 1, 217 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 299 deployed at 93 Wilshire Avenue, Elk Grove Village June 27, 217 through July 1, 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, Federal Aviation Administration (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 and Midway 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 93 Wilshire Avenue, Elk Grove Village between June 27 and July 1, 217. The monitor was located approximately 4.3 miles northwest from the center of the airport, as Chicago Department of Aviation Page 1 Printed August 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 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 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 logarithmically. 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. The measured noise levels in this report are not necessarily representative of the noise level on an annual basis, nor are they used to determine eligibility for the Residential Sound Insulation Program. Chicago Department of Aviation Page 2 Printed August 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 departures by MD8 s (McDonnell Douglas MD-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 August 217
Runway Use Report Period: June 27, 217 to July 1, 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 14 21 25 1 271 1 12 487 11 Arrivals 13 159 36 6 187 1 9 359 196 1 228 6 n/a Percentage Utilization Departures 1% % % 17% 17% % % % 23% % % % % 1% 4% 1% Arrivals % 1% 13% 3% 1% 15% 1% % % 1% 3% 16% % 19% % % 5% Departures 5% Arrivals 4% 4% 3% 3% 2% 2% 1% 1% % % Percentage Departure Utilization Percentage Arrival Utilization #R 1 # 1 13 16 1 17 3 3 4 17 1 1 15 19 1 # # 23 1 Chicago Department of Aviation Page 5 Printed August 217
Noise and Aircraft Events Report Period: June 27, 217 to July 1, 217 Site: 299-93 Wilshire Avenue Day Measured DNL Aircraft Community Total Aircraft Noise Events Daily Loud Events Events >85 Lmax Jun 27 58.3 54.9 59.9 218 Jun 28 58. 62.7 63.9 154 Jun 29 6.5 57.5 62.3 256 Jun 3 6.3 55.5 61.5 39 Jul 1 56.8 58.5 6.7 112 Jul 2 57.3 54. 58.9 149 Jul 3 62.4 55.3 63.1 387 Jul 4 -- -- -- -- --1 Jul 5 61.5 53.5 62.1 446 Jul 6 53.6 55.1 57.4 123 Jul 7 61.7 54.8 62.7 427 Jul 8 6.3 54.2 61.7 286 Jul 9 59.8 58.2 62.1 169 Jul 1 61.9 6.3 64.8 245 Average DNL Average Average Aircraft Community Total All Events >85 Lmax 59.4 56.5 61.6 252 Note: Total DNL represents the logarithmic sum of Aircraft and Community noise. --Excluded due to high community noise. Chicago Department of Aviation Page 6 Printed August 217
Hourly Noise Level Report Period: June 27, 217 to July 1, 217 Site: 299-93 Wilshire Avenue 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 Jun 27 2 1 13 17 8 1 2 4 1 1 14 12 16 14 12 17 18 27 1 1 218 Jun 28 1 13 16 12 11 1 3 7 7 7 6 6 6 8 9 1 9 2 2 154 Jun 29 4 2 1 3 18 17 6 7 5 4 7 13 22 16 14 14 12 18 19 27 21 6 256 Jun 3 2 1 9 26 11 11 12 7 15 15 12 8 26 28 33 43 18 12 15 5 39 Jul 1 2 1 2 3 2 3 7 2 1 4 4 5 7 7 6 17 11 7 9 9 3 112 Jul 2 1 1 2 1 6 3 5 1 3 3 6 7 8 4 6 4 2 28 28 3 149 Jul 3 14 29 24 13 2 28 35 24 36 29 26 35 33 29 12 387 Jul 4 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Jul 5 1 6 1 19 17 29 39 39 33 33 26 41 27 4 38 31 17 446 Jul 6 5 15 9 3 6 3 7 5 1 8 8 9 11 11 9 3 1 123 Jul 7 1 1 2 1 1 12 11 1 22 25 32 37 32 43 35 33 33 27 39 13 17 427 Jul 8 7 27 29 21 24 32 35 27 21 5 15 8 17 9 1 4 3 1 286 Jul 9 1 4 8 3 1 9 3 9 13 4 13 11 12 19 4 2 19 16 9 169 Jul 1 1 1 8 13 11 15 11 6 2 15 2 28 32 3 39 22 245 Average 1 1 1 8 14 11 12 12 13 17 15 17 15 17 17 21 22 13 14 8 2 252 Aircraft Noise Events are described on page 2 of this report. --Excluded due to high community noise. Chicago Department of Aviation Page 7 Printed August 217
Hourly Noise Level Report Period: June 27, 217 to July 1, 217 Site: 299-93 Wilshire Avenue 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 Jun 27 45 49 55 59 53 58 44 54 54 58 53 6 59 57 6 58 59 59 56 44 58 Jun 28 43 56 59 52 57 57 47 53 53 6 53 56 53 63 53 54 6 48 55 58 Jun 29 51 46 48 47 57 6 5 56 5 49 51 59 6 6 57 59 6 59 58 6 6 5 61 Jun 3 46 35 47 61 55 56 57 55 57 58 56 54 6 64 64 64 6 56 59 51 6 Jul 1 51 4 43 5 47 48 57 45 45 48 51 49 57 59 56 6 56 56 56 56 49 57 Jul 2 39 47 47 45 53 53 52 6 5 5 58 58 54 51 58 5 62 63 63 53 57 Jul 3 6 64 62 6 62 64 64 63 65 64 63 66 65 65 61 62 Jul 4 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Jul 5 42 5 55 62 61 63 64 64 63 63 63 65 63 65 65 65 62 61 Jul 6 47 59 54 5 51 48 51 53 57 57 56 55 58 56 58 49 36 54 Jul 7 47 42 43 45 44 54 63 52 61 62 63 64 63 65 64 64 65 63 65 63 62 62 Jul 8 56 63 64 62 64 63 63 62 61 54 59 53 59 58 43 56 56 41 6 Jul 9 44 45 5 5 53 51 48 51 56 5 57 6 6 62 53 42 6 59 59 6 Jul 1 48 53 55 56 53 59 55 55 56 58 65 64 64 55 64 63 62 Energy Average 45 33 35 41 44 4 55 6 58 59 59 59 6 6 6 6 61 62 63 62 6 59 56 5 59 Note: ## is aircraft events above 65 db daytime (7 a.m. - 1 p.m.) or 55 db nighttime (1 p.m. - 7 a.m.) --Excluded due to high community noise. Chicago Department of Aviation Page 8 Printed August 217
Noise Level Graph Report (DNL) Period: June 27, 217 to July 1, 217 Site: 299-93 Wilshire Avenue Aircraft, Community and Total DNL Aircraft Community Total 75 7 65 Decibels (dba) 6 55 5 45 4 35 27 28 29 3 1 2 3 -- 5 6 7 8 9 1 Day Of The Month --Excluded due to high community noise. Chicago Department of Aviation Page 9 Printed August 217
Aircraft Noise Events Graph Report (Lmax) Period: June 27, 217 to July 1, 217 Site: 299-93 Wilshire Avenue 35 Total Number of Measured Aircraft Noise Events 3 Number of Events 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 August 217
Loudest Aircraft Noise Events Report Period: June 27, 217 to July 1, 217 Site: 299-93 Wilshire Avenue Aircraft Airline Event Time Aircraft Stage Ops 1 Rwy Lmax Graph Of Lmax Jul 3, 15:26 MD83 3 A 9L 84. Jul 3, 11:57 MD88 3 A 9L 83.9 Jun 28, 14:42 B744 3 D 28R 83.8 Jul 5, 21:41 MD88 3 A 9L 83.4 Jul 1, 12:3 MD83 3 D 28R 83.4 Jul 6, 7:12 MD88 3 D 28R 83.3 Jun 28, 21:49 MD82 3 D 28R 83.3 Jun 28, 1:6 B772 3 D 28R 83.2 Jul 1, 9:55 B772 3 D 28R 83.1 Jun 3, 7:18 MD88 3 D 28R 83. Jun 28, 15:18 MD83 3 D 28R 83. Jul 2, 13:47 MD83 3 D 28R 83. Jun 29, 15:3 A332 3 D 28R 82.9 Jul 9, 16:6 B744 3 D 28R 82.9 Jul 2, 9:4 MD83 3 D 28R 82.8 Jul 5, 8:49 MD88 3 A 9L 82.7 Jun 28, 18:52 B772 3 D 28R 82.5 Jul 4, 18:21 B763 3 A 9L 82.2 Jul 6, 14:42 MD83 3 D 28R 82.1 Jul 8, 21:24 A333 3 D 28R 82.1 Jul 7, 14:5 MD88 3 A 9L 82. Jun 27, 9:38 MD82 3 D 28R 82. Jun 27, 15:26 MD83 3 D 28R 81.9 Jul 4, 16:47 B753 3 A 9L 81.9 Jun 29, 14:33 MD11 3 D 28R 81.8 75 85 95 1 "D" represents departures, "A" represents arrivals. Chicago Department of Aviation Page 12 Printed August 217
Gate Location Report Period: July 3, 217 Operations: Arrivals and Departures Site: 93 Wilshire Avenue Summary Arrivals: 4 Operations Left of Center: 2 (.5%) Source: Airport Noise Management System (ANMS) Chicago Department of Aviation Departures: : Left Boundary of Gate Page 13 Total Operations: 4 Operations Right of Center: 388 (99.5%) : Center of Gate : Right Boundary of Gate Printed August 217
Aircraft Altitude Report Period: July 3, 217 Operations: Arrivals and Departures Site: 93 Wilshire Avenue Arrivals: 4 Operations Left of Center: 2 (.5%) Summary Departures: Total Operations: 4 Operations Right of Center: 388 (99.5%) 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 August 217
O Hare Noise Hotline: 1-8-435-9569 www.flychicago.com/ordnoise