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Home My WebLink About20090259.tiffDENVER THE MILE HIGH CITY February 10, 2009 Weld County Commissioners Weld County PO Box 758 Greeley, CO 80632 Dear Sir or Madame: Enclosed is the Annual Noise Report for 2008 (January 1, 2008 through December 31, 2008) from the Denver International Airport Noise Abatement Office. If you have any questions regarding this report, or if I may be of further assistance, please contact me at (303) 342-2360. Sincerely, Andrea C. Christensen Denver International Airport Aviation Noise Abatement Officer DENVER INTERNATIONAL AIRPORT Department of Aviation Airport Office Building 8500 Pena Boulevard Denver, Colorado 80249 303.342.2200 www.FlyDenver.com 677171-erna-e-;4--,sie �• Ear Or J. • r C> • O 2008 Cumulative Noise Report . Or Or DENVER INTERNATIONAL AIRPORT January 1st— December 31st, 2008 Issued January 30th, 2009 January 1st to December 31st, 2008 Cumulative Results The number of potential Class II NEPS violations registered during January 1st through December 31st, 2008 is zero. In 2007, there was one potential Class II NEPS violation. Please see page 6 for DEN NEPS information. There was no potential 65 DNL noise contour violation for the time period. The 65 DNL contour continued to be completely contained within the boundaries of the City and County of Denver. Please see page 5 for DEN contour map. There was a 12.1% decrease in noise complaints received in 2008 as compared to 2007 (1,072 vs. 942 in 2008). The number of households registering at least one complaint in- creased by 59.7% (115 vs. 72 in 2007). Five households registered a combined 54% of total complaints. The percentage of complaints received during Nighttime Aircraft Opera- tions (10:00pm to 7:00am) for 2008 was 13.5% of total complaints received. Please see pages 7 and 8 for complete complaint and operational data. A New Low in 2008 2008 was the first year since Denver International Airport opened that there were no Class II NEPS violations. This result was the culmination of a multi -year downward trend in aircraft noise exposure. Due to the efforts of the DIA Noise Abatement Office, DIA Op- erations Department, DIA tenant airlines, and the Federal Aviation Administration, noise levels continued to decrease even though DIA has accommodated increasing aircraft operations during the same time period. Rumors that the big blue horse contrib- uted to the decrease can be neither con- firmed nor denied, though he is known to have quite an effect on his surroundings. Inside this issue: NEPS and RMT Map 4 2008 Contour Map 5 2008 NEPS Map 6 Jan —Dec, 2008 Statistics 7 —9 Cumulative Statistics 10-16 Specia/ points of interest: • ZERO potential NEPS Violations for January - December, 2008, page 6. • Complaints are down 12.1% compared to 2007, page 7. • Complaint map, page 8. • See page 9 for runway usage. • : J Or J• Or J• J or or O- iszar O- or or s:pi>r DEN Airport Noise and Operations System The DEN Airport Noise and Opera- tions Monitoring System (ANOMS) is a state-of-the-art computer system de- signed to enable the City and County of Denver to monitor aircraft noise in the vicinity of the airport. In addition to monitoring noise levels, the system calculates Noise Exposure Perform- ance Standards. (NEPS) at 101 grid points in Adams County (see map on page 4 for NEPS locations). The DEN ANOMS system monitors noise levels at 27 permanent and 4 portable noise monitoring terminals. These terminals are located through- out the Denver metro area (see map on page 4 for RMT locations). ARTSMAP ARTSMAP is a specially designed noise modeling program that auto- matically creates noise contours. ARTSMAP is designed to create con- tours from actual radar flight tracks that our office receives from the FM ARTS system which is sent via mo- dem, eliminating the need for manual data manipulation. The ARTSMAP software is installed on a computer in the Noise Abatement Office. The pro- gram analyzes, views, reports, and stores the data. Land Use and Zoning Urban growth and development in the areas surrounding DEN, particu- larly non -compatible residential and other noise -sensitive land uses, is of utmost concern to the City and County of Denver. The Noise Office has developed noise contours surrounding the air- port, inside which certain types of land uses are not recom- mended. The 65 Ldn noise contour (average decibel level with a 10 deci- bel penalty applied to nighttime op- erations) is a line inside which, under Federal guidelines, no residential The system also records the move- ment of all aircraft in the vicinity of DEN by utilizing FM air traffic control radar data. This makes it possible to match actual flights with noise events. In addition, the ANOMS system records weather information from three remote stations, which include a RACAL recording device to record pilot/controller radio transmissions. Currently, ARTSMAP is used at several major airports nationally. It allows the DEN Noise Abatement Of- fice to perform noise data analysis, generate daily automated noise con- tours, receive detailed runway utiliza- tion, and airline fleet mix identifica- tion. development should occur. The operational 65 Ldn noise con- tour for the airport, as created by ARTSMAP, is included in this report. However, for DEN, the 60 Ldn noise contour is used for compatible land use planning by the surrounding juris- dictions, in accordance with guide- lines promulgated by the Denver Re- gional Council of Governments and the Denver/Adams County Intergov- ernmental Agreement. Additional mapping for DEN that includes the applicable noise contours is available upon request. ARTSMAP Output ` 4 grtetommoner Nolan Canyon for Land Una Planning anni m Or wt r♦.wm. PAGE 2 2008 CUMULATIVE NOISE REPORT 4 Or Or 1•Car C‘ar Or Or l`m> 9 - ti tii ti l' or �" Or ti' DEN Noise Hotline Policy The purpose of the DEN Noise Complaint Hotline is to provide an opportunity for individuals to express their concerns regarding noise gener- ated by aircraft operating at DEN. Citizens are asked to leave their name, address and the date and time of their complaint on the hotline. Complaints are downloaded daily by our Noise Officers and then tran- scribed into the ANOMS system, where specific complaints can be matched to individual flight tracks. It is essential for all information to be entered correctly in order for the sys- tem to be effective. Glossary of Terms Sound: A rapid variation in air pres- sure, which is perceived by the ear and brain as sound. Noise: Generally considered to be any sound, which is deemed undesir- able by an individual. Decibel: Sound is measured by its pressure or energy in terms of deci- bels. The decibel scale is logarithmic; when the decibel level increases by 6 dB, the measured sound is twice as loud. Noise Abatement: A measure or ac- tion that minimizes the amount or impact of noise on the environs of an airport. Noise abatement measures include aircraft operating procedures and use or disuse of certain runways or flight tracks. These operating pro- cedures are controlled by the FM. Profanity will not be tolerated, and will result in the complaint not being registered. Any attempt to deliber- ately tie-up or abuse the Hotline may result in police action. Phone harass- ment is a state criminal offense and can carry a jail sentence and/or fine. Threats involving aircraft and/or the airport are a very serious matter and are a federal criminal offense. To make a threat, even jokingly, will re- sult in a notification to the Denver Police Department and may involve an FBI investigation. A -Weighted Sound Level (dBA): A type of sound level measurement which reduces the effect of very high and very low frequencies in order to mimic the response of the human ear. Nearly all aircraft sound level measurement is conducted using A - weighting. Equivalent Continuous Sound Level (Leq): A measurement of the average sound energy experienced over a pe- riod of time. This average sound level is expressed in decibels, and includes a notation of the period of time, which it covers (such as Leq (24) for an average of the sound level over a 24 -hour period). Day Night Level (Ldn): Also referred to as DNL. Similar to a Leq measure- ment, but is conducted over at least a 24 -hour time span and includes a 10dB nighttime penalty. For an Ldn calculation, all noise that occurs at night (defined as 10:00 pm to 7:00 am) is artificially increased for the public's increased sensitivity to noise during these hours. Noise Contour A line surrounding an airport that encloses a geographic region, which is exposed to a particu- lar Ldn level. These contour lines are nested in such a way that contours closer to the airport generally sur- round areas that experience higher noise levels than contours farther out. Annual Ldn contours are used to determine whether certain types of zoning or land uses are compatible with particular annual Ldn noise lev- els. 65 Ldn is considered by many federal agencies to be the level at which residential land use becomes incompatible. Remote Monitoring Terminal (RMT): Consists of a noise level analyzer, a weatherproof microphone, a system controller, a power supply, and a dedicated telephone line to download noise data to the ANOMS system, all mounted in a weatherproof cabinet. • PAGE 3 2008 CUMULATIVE NOISE REPORT . Noise Exposure Performance Standards (NEPS) Grid Coordinates, IGA Contour, and Remote Monitoring Terminal (RMT) Locations W 3 —J QJ 3 0 I -- Z 0 J Z Q \ IL) CO Q 0 0 w 3 0 C U so A p w e ft C L L ( N ® ® \✓ ' Two - (4) (� so C 0) 1 .' 0 U L aie 11 Arapat C4) co0 U! 0 GA 60 and 65 LDN Contours, and Noise Monitoring Sites. vi C 0 O 1✓ 3 CL Lu W'^ v/ 0 Z Z i a� w 4 C :i 4412 E4 a3 AA� ;S • PAGE 4 2008 CUMULATIVE NOISE REPORT January 1 - December 31, 2008 —DEN 65 LDN Contour Denver Adams Arapahoe Or DEN January 1 - December 31, 2008 65 LDN Contour Adams Legend Jan - Dec, 2008 65 LDN Contour IGA 65 LDN Contour DEN Property Line County Boundary 0 0.5 1 2 3 4 Miles • PAGE 5 2008 CUMULATIVE NOISE REPORZ • January 1 - December 31, 2008—Denver/Adams County IGA NEPS Values • PAGE 6 Area 2 January 1 through December 31, 2008 Grid Points IGA Annual Leq (24) Calculated Leq (24) Difference Leq A,l 38.6 38.5 -0.1 A,2 37.6 38.4 0.8 A,3 42.3 37.8 -4.6 A,4 45.3 38.2 -7.1 A.5 43.9 38.7 -5.2 A,6 37.5 37.2 -0.3 A,7 37.7 36.7 -1.0 A,8 36.5 37.0 0.5 A,9 36.3 37.9 1.6 A,10 37.6 37.5 -0.1 A,11 39.2 36.1 -3.2 A.12 41.2 35.0 -6.2 8,2 39.5 39.4 -0.1 B,4 42.5 38.9 -3.6 6,5 43.1 39.6 -3.5 6,6 39.0 37.8 -1.3 B,7 39.0 37.4 -1,7 B,8 38.0 38.1 0.1 8,9 38.3 39.1 0.8 8,10 39.0 38.2 -0.9 8.1 1 40.4 36.6 -3.8 6,12 42.6 35.8 -6.8 C,2 41.0 40.4 -0.6 C,3 43.3 39.3 -4.0 C,4 43.5 39.6 -3.9 C,5 43.4 40.6 -2.8 C,6 43.3 38.4 -4.9 C,7 43.3 38.0 -5.3 C,8 42.6 39.3 -3.3 C,9 42.2 40.1 -2.1 C.10 41.6 38.5 -3.1 C,11 42.5 36.8 -5.7 C,12 44.3 36.1 -8.2 D,2 41.7 41.4 -0.3 D,3 46.2 40.3 -5.9 D,4 48.4 40.2 -8.2 D,5 48.2 41.9 -6.4 D,6 46.2 39.0 -7.2 D,7 44.2 38.9 -5.3 D,8 43.7 40.8 -2.9 D,9 43.1 40.8 -2.3 D,10 44.9 38.2 -6.7 D,11 44.5 36.5 -8.0 D,12 45.1 35.9 -9.2 E,1 42.4 40.1 -2.3 E,2 42.2 42.3 0.1 E,3 46.7 41.8 -4.9 E,4 51.2 41.0 -10.2 E,5 51.0 43.1 -7.9 E,6 44.6 39.7 -4.9 E,9 43.1 40.8 -2.3 E,10 43.1 37.5 -5.6 E,11 46.1 36.1 -10.0 Area 1 January 1 through December 31, 2008 Grid Points IGA Annual Leq (24) Calculated Leq (24) Difference Leq C,4 44.2 36.4 -7.8 C,5 36.7 34.1 -2.6 C,6 36.0 33.3 -2.7 D.4 41.1 35.7 -5.4 D,5 34.2 34.5 0.3 D,6 36.0 34.1 -1.9 D,7 41.4 34.7 -6.7 E,4 38.3 35.1 -3.2 E,5 34.8 34.9 0.1 E,6 36.7 33.8 -2.9 E,7 41.4 33.8 -7.6 F,2 51.7 41.5 -10.2 F,3 43.7 37.5 -6.2 F,5 37.3 33.4 -4.0 F,6 38.5 33.2 -5.3 F,7 42.1 33.4 -8.8 G.2 51.2 42.4 -8.9 G,3 42.1 37.0 -5.1 G,4 40.2 34.1 -6.1 H,2 50.1 42.7 -7.4 H,3 46.0 36.9 -9.1 H,4 46.1 34.5 -11.6 Area 3 January 1 through December 31, 2008 Grid Points IGA Annual Leq (24) Calculated Leq (24) Difference Leq A,-1 38.9 32.5 -6.4 A,0 39.6 32.9 -6.7 A,1 43.2 33.9 -9.3 A,2 45.7 35.3 -10.4 A,3 45.6 37.1 -8.5 6,-1 37.9 32.5 -S.5 6,0 39.2 32.7 -6.5 6,1 42.6 33.5 -9.1 8,2 45.8 34.9 -10.9 6,3 45.7 36.8 -8.9 C,-1 36.7 33.0 -3.7 C,0 37.1 33.1 -4.1 C,l 39.5 33.6 -5.9 C,2 44.8 34.7 -10.1 C,3 46.5 36.7 -9.8 D,-1 32.6 33.5 0.9 D,0 33.3 33.3 0.0 D,1 37.3 33.4 -3.9 D,2 43.0 34.2 -8.8 E,-1 31.4 33.4 2.0 E,0 33.1 32.6 -0.5 E,1 36.2 32.7 -3.6 E,2 40.6 33.4 -7.2 F,1 36.5 32.5 -4.0 F,2 39.4 33.5 -5.9 G,1 42.5 33.4 -9.1 2008 CUMULATIVE NOISE REPORT January 1 - December 31, 2008 —DEN 2008 Noise Complaint Calls by Community* Community* No. of Calls 2008 No. of Callers 2008 No. of No. of Calls Calls 2007 2006 Arvada Aurora Bennett Boulder Brighton Castle Rock Commerce City Denver Elizabeth Englewood Evergreen Fort Lupton Golden Henderson Hudson Kiowa Lafayette Lakewood Lochbuie Northglenn Parker Strasburg Thornton Watkins Westminster 0 181 45 8 51 0 267 119 35 0 0 0 0 0 6 0 0 0 0 4 24 94 44 57 7 0 13 3 2 10 0 31 16 7 0 0 0 0 0 2 0 0 0 0 3 6 1 6 14 1 0 267 82 19 93 23 80 88 216 0 0 0 0 0 3 0 0 0 21 0 27 0 44 9 100 1 207 11 12 50 0 95 26 81 1 7 3 4 6 2 1 1 25 43 11 25 0 28 29 44 Overall Total 942 Monthly Comparison: Time Complaint Received 115 1,072 713 Complaint and Operational Statistics • Total Calls for 2008 by Community Thornton Watkins 5% 6% Strasburg 10% Parker 3% Northglenn 0% Hudson 1% Elizabeth 4% Westminster 1% Aurora 19% Denver 13% Bennett 0 Boulder5 ° 1% Brighton 5% Commerce City 27% Top Five Complainants Vs. All Others 714% 54% • See map on next page for location of known noise complaints. 2008 Noise Complaint Calls - Daytime vs. Nighttime Day Hours (7:00 am to 9:59 pm) Night Hours (10:00 pm to 6:59 am) Total D v -11 C CD c to lft rt n ., 0 a - z 0 rD B a- rD at CD n m 3 a- m 1 26 27 84 34 127 115 63 123 81 58 41 35 5 0 20 1 0 15 13 23 12 23 6 10 31 27 104 35 127 130 76 146 93 81 47 45 Monthly Comparison: 2007 Total Operations vs. 2008 Total Operations 60000 55000 5)000 49)00 40000 Ma Apr JU Nov Dec Jai Feb Mw Jui —411— 2007 Aug SEP —4-2008 2008 Total 814 128 942 60000 56000 00000 40000 40000 • _ PAGE 7 2008 CUMULATIVE NOISE REPORT January 1 - December 31, 2008 —DEN Complaint Location Map • • i i in II Z (./) _z Q J a O U w co O z z w O co 0 0 N w CO W U W 0 >- tY z C o 0t a . 2 dr s 2 4 I • PAGE 8 2008 CUMULATIVE NOISE REPORT January 1 - December 31, 2008 DEN RWY Utilization and Day/Night Statistic s16 ti 1 t ARR 12.8% DEP 0.3% c ARR 21.9% DEP 0.0% 12.29/0 13 2% DEP DEP 0.2% ARR ft 4.1% ARR !34R; ARR L DEP jDEP ARR • 07 5.6%ry 0.0%r `+125.2% Cl 0.1% 25 ARR L, • 0.0%f') DEP ,J DEP 27.8%[ 0.0% 17 ARR 4.4% DEP 11.7% L l- 1.0% DEP F23.8% ARR ? t /35L\ 117Lj 1r. ARR; 0.5r DEP' 8.2% J p0.2010 DEP "IrI- F17.1% A-RRR I ' t I ;'35It ARR `-I 9.5% 2007 vs. 2008 DEN Daytime Arrivals & Departures • 26 '. 54000 54000 . °) 49000 Li" 44000 - _ *° 39000 I I ► I I I I I i I 39000 *° 1 (<1° I PQt Val I �J PJ� Seg 4500 s 4000 ca u_ 3500 ° 3000 2500 P-9 (<1° -u- 2007 -.- 2008 2007 vs 2008 DEN Nighttime Arrivals & Departures ▪ 49000 2) 44000 E OGG 5000 4500 dir.— 4000 p) - 3500 - - 3000 *° 2500 OGG • -a- 2007 2008 PAGE 9 2008 CUMULATIVE NOISE REPORT 2008 DEN Cumulative Noise Report Quarterly Cumulative Contour Maps and NEPS Tables • 1Q08 January 1, 2008 through March 31, 2008 (pages 11-12) • 2Q08 January 1, 2008 through June 30, 2008 (pages 13-14) • 3Q08 January 1, 2008 through September 30, 2008 (pages 15-16) f PAGE 10 2008 CUMULATIVE NOISE REPORT January 1 - March 31, 2008 —DEN 65 LDN Contour a Rocky Mountain Arsenal 'G En (D Q] 0. Denver acbas Adams Weld Arapahoe l Adams Legend Jan - Mar, 2008 65 LDN Contour IGA 65 LDN Contour DEN Property Line County Boundary „‘R.i„-?3r DEN January - March, 2008 Cumulative Contour 0 0.5 1 2 3 4 Miles • PAGE 11 2008 CUMULATIVE NOISE REPORT • January 1 - March 31, 2008—Denver/Adams County IGA NEPS Values • Area 2 January 1 - March 31, 2008 Grid Points IGA Annual Leq (24) Calculated Leq (24) Difference Leq A,1 38.6 38.0 -0.6 A,2 37.6 38.1 0.5 A,3 42.3 37.6 -4.7 A,4 45.3 38.2 -7.1 A,5 43.9 38.6 -5.3 A,6 37.5 37.3 -0.2 A,7 37.7 36.4 -1.3 A,8 36.5 36.1 -0.4 A,9 36.3 36.5 0.2 A,10 37.6 36.2 -1.4 A,11 39.2 35.1 -4.2 A,12 41.2 34.1 -7.1 B,2 39.5 38.9 -0.6 B,4 42.5 38.9 -3.6 6,5 43.1 39.6 -3.6 B,6 39.0 37.9 -1.1 B.7 39.0 37.1 -1.9 B,8 38.0 37.0 -1.1 6,9 38.3 37.6 -0.7 6,10 39.0 37.1 -1.9 8,11 40.4 35.9 -4.6 6,12 42.6 35.0 -7.6 C,2 41.0 39.9 -1.2 C,3 43.3 38.9 -4.4 C,4 43.5 39.5 -4.0 C,5 43.4 40.5 -2.9 C,6 43.3 38.5 -4.8 C.7 43.3 37.4 -5.9 C,8 42.6 37.9 -4.7 C,9 42.2 38.7 -3.5 C,10 41.6 37.7 -3.9 C,11 42.5 36.2 -6.3 C,12 44.3 35.2 -9.1 0,2 41.7 40.8 -0.9 D,3 46.2 39.8 -6.4 D,4 48.4 40.2 -8.3 D,5 48.2 41.6 -6.6 D,6 46.2 39.1 -7.1 D,7 44.2 38.0 -6.2 D,8 43.7 39.2 -4.5 D,9 43.1 39.6 -3.5 D,10 44.9 37.6 -7.3 D,1 1 44.5 35.9 -8.6 D,12 45.1 35.0 -10.1 E,1 42.4 40.0 -2.5 E,2 42.2 42.0 -0.2 E,3 46.7 41.2 -5.5 E,4 51.2 40.8 -10.4 E,5 51.0 42.8 -8.2 E,6 44.6 39.7 -4.9 E.9 43.1 39.9 -3.2 E,10 43.1 37.1 -6.1 E,11 46.1 35.4 -10.7 Area 1 January 1 - March 31, 2008 Grid Points IGA Annual Leq (24) Calculated Leq (24) Difference Leq C,4 44.2 35.9 -8.3 C,5 36.7 34.0 -2.7 C,6 36.0 33.4 -2.6 D,4 41.1 35.1 -6.0 D,5 34.2 34.4 0.2 D,6 36.0 34.3 -1.7 0,7 41.4 35.1 -6.3 E,4 38.3 34.5 -3.8 E.5 34.8 35.0 0.2 E.6 36.7 34.0 -2.7 E,7 41.4 34.1 -7.3 F,2 51.7 39.3 -12.4 F,3 43.7 35.8 -7.9 F,5 37.3 33.2 -4.1 F,6 38.5 33.2 -5.3 F,7 42.1 33.5 -8.6 G.2 51.2 39.8 -11.4 G,3 42.1 35.1 -7.0 G,4 40.2 32.8 -7.4 H,2 50.1 40.1 -10.0 1-3,3 46.0 35.0 -11.0 H.4 46.1 33.7 -12.4 Area 3 January 1 - March 31, 2008 Grid Points IGA Annual Leq (24) Calculated Leq (24) Difference Leq A,-1 38.9 32.5 -6.4 A,0 39.6 32.7 -6.9 A,l 43.2 33.6 -9.7 A,2 45.7 34.7 -11.0 A,3 45.6 36.3 -9.3 6,-1 37.9 32.4 -5.5 B,0 39.2 32.5 -6.7 6,1 42.6 33.1 -9.5 B,2 45.8 34.2 -11.6 6,3 45.7 35.6 -10.1 C,-1 36.7 33.0 -3.8 C,0 37.1 32.9 -4.3 C,1 39.5 33.2 -6.3 C,2 44.8 34.0 -10.8 C,3 46.5 35.4 -11.1 D,-1 32.6 33.5 0.9 D,0 33.3 33.1 -0.2 D,1 37.3 33.2 -4.1 D,2 43.0 33.5 -9.5 E,-1 31.4 33.4 2.0 E,0 33.1 32.7 -0.5 E,1 36.2 32.1 -4.1 E,2 40.6 32.3 -8.3 F,1 36.5 31.8 -4.7 F,2 39.4 31.8 -7.6 G,1 42.5 32.3 -10.2 PAGE 12 2008 CUMULATIVE NOISE REPORT January 1 - June 30, 2008 —DEN 65 LDN Contour C>~ DEN January 1- June 30, 2008 65 L.DN Contour Legend Jan - Jun. 2008 65 LDN Contour IGA 65 LDN Contour - DEN Property Line County Boundary 0 0.5 1 2 3 4 • PAGE 13 2008 CUMULATIVE NOISE REPORT • _ January 1 - June 30, 2008—Denver/Adams County IGA NEPS Values • PAGE 14 Area 2 January 1 through June 30, 2008 Grid Points IGA Annual Leq (24) Calculated Leq (24) Difference Leq A,1 38.6 38.6 0.0 A,2 37.6 38.4 0.8 A,3 42.3 37.4 -4.9 A,4 45.3 37.7 -7.6 A,5 43.9 38.3 -5.6 A,6 37.5 37.0 -0.5 A,7 37.7 36.4 -1.3 AM 36.5 36.5 0.0 A,9 36.3 37.2 0.9 A,10 37.6 37.1 -0.5 A,11 39.2 36.0 -3.2 A,12 41.2 35.0 -6.2 6,2 39.5 39.4 -0.1 B,4 42.5 38.4 -4.1 B,5 43.1 39.2 -3.9 6,6 39.0 37.7 -1.3 B,7 39.0 37.1 -1.9 B,8 38.0 37.4 -0.6 6,9 38.3 38.3 0.0 B,10 39.0 37.9 -1.1 8,11 40.4 36.7 -3.8 8,12 42.6 35.9 -6.7 C,2 41.0 40.4 -0.6 C,3 43.3 39.1 -4.2 C,4 43.5 39.1 -4.4 CS 43.4 40.3 -3.2 C,6 43.3 38.3 -5.0 C,7 43.3 37.7 -5.6 CM 42.6 38.6 -4.1 C,9 42.2 39.5 -2.7 C,10 41.6 38.4 -3.2 C,11 42.5 36.9 -5.6 C,12 44.3 36.1 -8.2 D,2 41.7 41.5 -0.2 D,3 46.2 40.2 -6.0 D,4 48.4 39.7 -8.7 D.5 48.2 41.5 -6.7 D,6 46.2 38.9 -7.3 D,7 44.2 38.5 -5.7 D,8 43.7 40.0 -3.7 D,9 43.1 40.3 -2.8 D,10 44.9 38.3 -6.7 D,1 1 44.5 36.6 -7.9 D,12 45.1 36.0 -9.1 E,1 42.4 40.3 -2.1 E,2 42.2 42.6 0.4 E,3 46.7 41.8 -4.9 E,4 51.2 40.4 -10.8 E,5 51.0 42.6 -8.4 E,6 44.6 39.5 -5.1 E,9 43.1 40.6 -2.5 E,10 43.1 37.6 -5.5 E,1 1 46.1 36.2 -9.9 Area 1 January 1 through June 30, 2008 Grid Points IGA Annual Leq (24) Calculated Leq (24) Difference Leq C,4 44.2 36.3 -7.9 C,5 36.7 34.1 -2.6 C,6 36.0 33.3 -2.7 D,4 41.1 35.5 -5.6 D,5 34.2 34.4 0.2 D,6 36.0 34.1 -1.9 D,7 41.4 34.8 -6.6 E,4 38.3 34.9 -3.4 E,5 34.8 34.9 0.1 E,6 36.7 33.7 -3.0 E,7 41.4 33.7 -7.7 F,2 51.7 40.9 -10.8 F,3 43.7 37.0 -6.7 F,5 37.3 33.2 -4.1 F,6 38.5 33.1 -5.4 F,7 42.1 33.2 -8.9 G,2 51.2 41.6 -9.6 G,3 42.1 36.4 -5.7 G,4 40.2 33.5 -6.7 H,2 50.1 41.9 -8.3 H,3 46.0 36.4 -9.6 H,4 46.1 34.2 -11.9 Area 3 January 1 through June 30, 2008 Grid Points IGA Annual Leq (24) Calculated Leq (24) Difference Leq A,-1 38.9 32.9 -6.0 A,0 39.6 33.1 -6.5 A,1 43.2 33.9 -9.3 A,2 45.7 35.3 -10.4 A,3 45.6 37.0 -8.6 B,-1 37.9 32.7 -5.2 B,0 39.2 32.9 -6.3 B,1 42.6 33.5 -9.1 B,2 45.8 34.8 -11.0 B,3 45.7 36.5 -9.2 C,-1 36.7 33.3 -3.5 C,0 37.1 33.2 -3.9 C,1 39.5 33.5 -6.0 C,2 44.8 34.6 -10.3 C,3 46.5 36.2 -10.3 D,-1 32.6 33.7 1.1 D,0 33.3 33.4 0.1 D,1 37.3 33.4 -3.9 D,2 43.0 34.0 -9.0 E,-1 31.4 33.4 2.0 E,0 33.1 32.8 -0.4 E,1 36.2 32.9 -3.3 E,2 40.6 33.0 -7.6 F,1 36.5 32.5 -4.0 F,2 39.4 33.3 -6.1 G,1 42.5 33.5 -9.0 2008 CUMULATIVE NOISE REPORT January 1 - September 30, 2008 —DEN 65 LDN Contour • U Weld �r DEN January 1 - September 30, 2008 65 LDN Contour Adams Legend Jan - Sep, 2008 65 LON Contour IGA 65 LDN Contour DEN Property Line County Boundary 0 0.5 1 2 3 4 • PAGE 15 2008 CUMULATIVE NOISE REPORT January 1 - September 30, 2008—Denver/Adams County IGA NEPS Values Area 2 January 1 through September 30, 2008 Grid Points IGA Annual Leq (24) Calculated Leq (24) Difference Leq A,1 38.6 38.9 0.3 Al2 37.6 38.7 1.1 A,3 42.3 37.6 -4.8 A,4 45.3 37.9 -7.5 A,5 43.9 38.6 -5.3 A,6 37.5 37.2 -0.3 A,7 37.7 36.7 -1.0 A,8 36.5 37.0 0.5 A,9 36.3 37.9 1.6 A,10 37.6 37.5 -0.1 A,1 1 39.2 36.2 -3.0 A,12 41.2 35.1 -6.1 B,2 39.5 39.7 0.2 B,4 42.5 38.6 -4.0 B,S 43.1 39.5 -3.6 B,6 39.0 37.8 -1.2 B,7 39.0 37.4 -1.6 B,8 38.0 38.0 0.0 B,9 38.3 39.0 0.7 8,10 39.0 38.2 -0.8 8,1 1 40.4 36.7 -3.7 8,12 42.6 35.9 -6.7 C,2 41.0 40.8 -0.2 C,3 43.3 39.3 -4.0 C,4 43.5 39.2 -4.3 C,5 43.4 40.6 -2.9 C,6 43.3 38.4 -4.9 C,7 43.3 38.0 -5.3 C,8 42.6 39.2 -3.4 C,9 42.2 40.1 -2.1 C,10 41.6 38.5 -3.1 C,11 42.5 36.8 -5.7 C,12 44.3 36.1 -8.2 D,2 41.7 41.9 0.2 D,3 46.2 40.6 -5.6 D,4 48.4 39.9 -8.S D,5 48.2 41.8 -6.4 D,6 46.2 39.1 -7.1 D,7 44.2 38.9 -5.3 D,8 43.7 40.7 -3.0 D,9 43.1 40.7 -2.4 D,10 44.9 38.2 -6.7 D,1 1 44.5 36.5 -8.0 D,12 45.1 36.0 -9.1 E,1 42.4 40.3 -2.1 E,2 42.2 42.8 0.6 E,3 46.7 42.2 -4.5 E,4 51.2 40.7 -10.5 E,5 51.0 43.0 -8.0 E,6 44.6 39.7 -4.9 E,9 43.1 40.8 -2.3 E,10 43.1 37.5 -5.6 E,1 1 46.1 36.2 -10.0 • PAGE 16 Area 1 January 1 through September 30, 2008 Grid Points IGA Annual Leq (24) Calculated Leq (24) Difference Leq C,4 44.2 36.6 -7.7 C,5 36.7 34.1 -2.6 C,6 36.0 33.3 -2.7 D,4 41.1 35.7 -5.4 D,5 34.2 34.4 0.2 D,6 36.0 34.0 -2.0 D,7 41.4 34.7 -6.7 E,4 38.3 35.1 -3.2 E,5 34.8 34.9 0.1 E,6 36.7 33.6 -3.1 E,7 41.4 33.7 -7.7 F,2 51.7 41.7 -10.0 F,3 43.7 37.7 -6.0 F,5 37.3 33.3 -4.0 F,6 38.5 33.2 -5.3 F,7 42.1 33.3 -8.8 G,2 51.2 42.6 -8.6 G,3 42.1 37.3 -4.8 G,4 40.2 34.2 -6.0 H,2 50.1 43.1 -7.0 H,3 46.0 37.2 -8.8 H,4 46.1 34.6 -11.5 January Area 3 1 through September 30, 2008 Grid Points IGA Annual Leq (24) Calculated Leq (24) Difference Leq A.-1 38.9 32.8 -6.1 A,0 39.6 33.1 -6.5 A,1 43.2 34.2 -9.0 A.2 45.7 35.7 -10.0 A,3 45.6 37.5 -8.1 B,-1 37.9 32.7 -5.2 B,0 39.2 33.0 -6.2 8,1 42.6 33.8 -8.8 8,2 45.8 35.2 -10.6 B,3 45.7 37.3 -8.4 C,-1 36.7 33.4 -3.3 C.0 37.1 33.4 -3.8 C,l 39.5 33.8 -5.7 C,2 44.8 35.0 -9.8 C,3 46.5 37.2 -9.3 D,-1 32.6 33.9 1.3 D.0 33.3 33.6 0.3 D,1 37.3 33.6 -3.7 D,2 43.0 34.5 -8.5 E,-1 31.4 33.7 2.3 E,0 33.1 33.0 -0.1 E,1 36.2 33.2 -3.1 E,2 40.6 33.8 -6.8 F,1 36.5 33.1 -3.5 F,2 39.4 34.1 -5.3 G,1 42.5 34.0 -8.5 2008 CUMULATIVE NOISE REPORT • DENVER INTERNATIONAL AIRPORT Noise Office 8500 Pena Boulevard AOB, 6th Level, NW Corner Mail Code 285 Denver, CO 80249-6340 Phone: 303.342.2000 Noise Hotline: 303.342.2380 Toll Free Noise Hotline: 800.417.2988 Fax: 303.342.2366 E-mail: Noise.Office@flydenver.com We're on the Web! www.flydenver.com Working @ DEN is GREAT! VISION Working together, we will be the world's finest airport. MISSION Enhancing economic prosperity and quality of life in the Denver region by connecting its people and products to the world. Leading the aviation industry in safety, service, convenience, efficiency, innovative practices, aesthetics and financial strength. Hello