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Home My WebLink About08 J.W. NOISE RPT 01-05-99NO. 8 1-5-99 i nter-Com . DATE: JANUARY 5, 1999 TO: FROM: SUBJECT: WILLIAM A. HUSTON, CITY MANAGER COMMUNITY DEVELOPMENT DEPARTMENT JOHN WAYNE AIRPORT NOISE ABATEMENT QUARTERLY REPORTS SUMMARY: This report transmits two John -Wayne Airport Noise Abatement Quarterly Reports for .the first and second quarters of 199& The average noise level measured at monitoring station M-7, located at Columbus Tustin Middle School slightly increased during the first and second quarters. Average .noise levels during both quarters remained below the City, County and State criteria of 65 dB Community Noise Equivalent Level (CNEL) for residential uses. RECOMMENDATION Receive and file report. FISCAL IMPACT The City retains the acoustics consulting firm of J.J. Van Houten and Associates, Inc. to review JWA Noise Abatement Quarterly Reports. The costs for such reviews are annually included in the Community Development Department budget. DISCUSSION Following the conclusion of each calendar quarter, John Wayne Airport prepares a Noise Abatement Program Quarterly Report and transmits a copy of the report to the City of Tustin. Twice a year the consultant prepares a report, which summarizes two quarterly reports. Attachment 1 contains the quarterly reports for the first and second quarters of 1998. Attachment 2 contains the summary report prepared by the noise consultant. A brief overview of the information contained within these attachments follows. City Council Report JWA Noise Abatement Quarterly Reports January 5, 1999 Page 2 Measured Noise Levels The average annual CNEL at Remote Monitoring Station M7 is 56.1 for the one year period ending, June 30, 1998. This is only 0.2 dB higher than the average CNEL of 55.9 dB for the year ending, December 31, 1997. During the first quarter of 1998, the average CNEL at Remote Monitoring Station (RMS) #7, located at Columbus Tustin Middle School, was 55.9 dB. For comparison, the CNEL was 0.9 dB higher (56.8) during the first quarter of 1997. f During the second quarter of 1998, the average CNEL was 56.1. For comparison, the CNEL was 0.2 dB lower (55.9) during the second quarter of 1997. All measured noise levels are below the City, County and State criteria of 65 dB CNEL for residential areas. Noise .Complaints During the first quarter of 1998, there were 37 Tustin/Orange complaints compared with 39 for the same period during 1997. During the second quarter of 1998, there were 64 Tustin/Orange complaints compared with 55 for the same period during 1997. The number of complaints increased during the second quarter and was slightly lower during the first quarter compared to the same periods in 1997. However, the total number of complaints increased significantly during the first and second quarters of 1998 compared to the th/rd and fourth quarters of 1997. The increase in complaints corresponds with the increase in total quarterly jet operations from the last two quarters of 1997 to the first two quarter of 1998. Type and Mix of Aircraft Related to Noise Levels During the first quarter of 1998, the percentage of quieter Class E aircraft decreased and the percentage of noisier Class A aircraft increased compared with the same period in 1997. However, the average CNEL for the first quarter of 1998 was lower than the same period during 1997. City Council Report JWA Noise Abatement Quarterly Reports January 5, 1999 Page 3 During the second quarter of 1998, the percentage of quieter Class E aircraft decreased and the percentage of noisier Class A aircraft slightly increased compared with the same period in 1997. The average CNEL for the second quarter was slightly higher than the second quarter of 1997. The percentage of quieter Class E aircraf~ at John Wayne Airport has remained fairly consistent since the 4th quarter of 1996 (about 30 to 36%). However, variations in aircraft mix do not correlate with changes in the average quarterly CNEL, which means that an increase in the use of quieter Class E aircraft does not necessarily result in a decrease in the average quarterly CNEL. Since noise issues are of considerable importance to the City of Tustin, the Community Development Department will continue to monitor operations at John Wayne Airport unless otherwise directed by the City Council. Minoo Ashabi Assistant Planner Elizabeth A. Binsack Community Development Director Attachments . John Wayne Airport Noise Abatement Quarterly Reports for January 1, 1998 - March 31, 1998 and April 1, 1998 - June 30, 1998. , Review of John Wayne Airport Noise Abatement Program Quarterly Reports, 1st and 2nd Quarters 1998 (Van Houten and Associates, Inc.) ma:airport\jwa 1 &2-report 98 NOISE ABATEMENT PROGRAM QUARTERLY REPORT JUN - 4 1998 RECEIVED JUN 2 9 1998 COMMUNITY DEVEL OP ,4ENT For the period: January 1, 1998 through March 31, 1998 Prepared in accordance with: AIRIN)RT NOISE STANDARD STATE OF CALIYORNIA California Administrative Code Title 21, Chapter 2.5, SubChapter 6: Division of Aeronautics Noise Standards Submitted b/~: O.B. $¢hooley Airport Director John Wayne Airport, Orange County INTROD~C~ON This is the 101st Quarterly Report submitted by the County of Orange in accor~c~ with the requirements of the California Airport Noise Standards (California Administrative Code Title 21, Chapter 2.5, SubChapter 6: Division of Aeronautics Noise Standards). Effective January 1, 1986, the criteria for defining "Noise Impact Area" was changed from 70 dB to 65 dB Community Noise Equivalent Level (CNEL). Under this criteria, John Wayne Airport currently has a "Noise Impact Area." NOISE IMPACT SUMMARY Caltrans' Aeronautics Program has established guidelines in the California State Noise Standard to control residential area noise levels produced by aircraft operations using the State's airports. Under those guidelines, residential noise sensitive areas exposed to an average Community Noise Equivalent Level (CNEL) of more than 65 dB define the 'Noise Annual Impact Area.' John Wayne Airport uses ten permanent remote monitoring stations (RMS) located in Newport Beach, Santa Ana, Tusfin and Irvine to measure noise levels, at the following locations: MONITOR STATIONS RMS-I: Golf Course, 3100 Irvin¢ Ave., Newport Beach RMS-8: RMS-2:20152 S.W. Birch St., Santa Aha RMS-9: RMS-3: 2139 Anniversary Lane, Newport Beach RMS-21: RMS-6: 1131 Back Bay Drive, Newport Beach RMS-22: RMS-7: 17952 Beneta Way, Tustin RMS-24: 1300 S. Grand Avenue, Santa Aha 17372 Eastman Street, Irvine 223 Nata, Newport Beach 2338 Tustin Ave., Newport Beach 1918 Santiago, Newport Beach The map in Figure 1 shows the general location of each permanent remote monitor station. Figure 2 shows the Airport's "Noise Impact Area" for the previous year (April 1, 1997 - March 31, 1998). The Figure 2 information was developed by Mestre-Greve Associates, Inc., in consultation with John Wayne Airport. CNF2. values measured for the period and current digitized land use information were utilized to calculate the land area acreages, number of residences and estimated number of people within the 'Noise Impact Area'. RG:jw l~t QUARTER 1998 ~n~ -1- FIGURE 1 JOHN WAYNE AIRPORT STATION LOCATION MAP JOHN WAYNE M REMOTE MONITORING' STATION FIGURE 2 FIIvK~ 1 III 1 -- --;!!1 IIII I!11 LEGEND ......... ~.~, ..::¢.~.-:.~:::.~ ~.:,~.: (Nm indm d~ellinI un,s) Incompatible Land Use Area: 26.9 ncres or 0.043 square miles Number of Dwellings: 118 Number of People: 296 (Based on 2~ people l~ D. U.) JOHN WAYNE AIRPORT 65 dB CNEL IMPACT AREA APRIL 1997 - MARCH 1998 JOl~ wnY~ AIRPORT -3= AIRCRAFT TRAFFIC SUMMARY The Airpon u'affic summary for this quart=r is shown in Table 1 and Figur= 3 b~low. count histories and average daily departure counts ar= illusu'at=d in Tables 9 & 10. TABLE 1 LANDING AND TAKEOFF OPERATIONS January- March 1998 Jet Propeller Business (1) Total (2) Month/Quarter Air Carriers Air Carriers Jet Aircraft Operations Air Carrier operational Average Daily Jet Operations January 6,620 1,248 1,108 33,957 257 February 6,073 1,120 1,062 29,774 254 March 6,784 1,127 1,138 37,461 255 First Quarter 19,477 3,495 3,308 101,192 256 PREVIOUS 12 MONTHS: 75,112 16,489 11,967 439,759 238 04/01/97 - 03/31/98 NOTE: (I) Business Jet figures include a 5% factor for operations not identified by the JWA noise momtor stations. (2) Counts in this column are based upon records provid=d by the local FAA representatives. FIGURE 3 QUARTERLY AIRPORT TRAFFIC SUMMARY (LANDING AND TAKEOFF OPERATIONS) Jet Carder Military Prop Carder Business Jet GA Propeller 3495 3308 19477 20000 I 40000 60000 74912 80000 RG:jw l~t QUARTER 1998 ~/'22/98 COMMUNITY NOISE EQUIVALENT LEVELS The monthly, quarterly and twelve month Communi ,ty Noise Equivalent Level (CNEL) average values for each monitor station are shown in Table 2, while daily CNEL values are shown in Tables 3 through 5. Insufficient data is indicated by "0.0" entries in each table. Average Single Event Noise Exposure Level (SENEL) values for Air Carrier and Business Jet aircraft are shown in Tables 6 through 8. For the ~'elve month period ending March 31, 1998, 118 dwelling units in Santa Ama Heights were in the "Noise Impacted Area" (within the 65 dB CNEL contour); there was no change in the number of dwelling units in the "Noise Impacted Area" from the previous twelve month period ending December 31, 1997. The State has approved several remedies of'aircraft noise levels for noise sensitive property, in the "Noise Impact Area": homes can be acoustically insulated, purchased by the Count3', or rezoned for "other non-noise sensitive uses." As part of the Count?"s Santa Aha Heights Land Use Compatibilit?' Program, appro.,dmately 77 general agriculture (A-l) properties with residential land uses on Orchard, Acacia and Birch Streets were rezoned for Business Park Use in October, 1986. Each propert3' was individually sold and subsequently converted to compatible land use. Between 1986 and 1993, 124 residences were purchased or otherwise made compatible throu~ the Coun .ty's Purchase Assurance Program, Acoustical Insulation Program or Housing Relocation Program. In September 1993, the FAA approved a grant to fund a voluntary, acoustical insulation program titled 'Santa Ama Heights Acoustical Insulation Program" ('SAId ADP"). During the first quarter of 1998, ten additional residences have been made compatible through the County's SAH ADP. A total of 214 residences in. Santa Aha Heights have been purchased or otherwise made compatible through the Coun~"s Purchase Assurance Program, Housing Relocation Program, Acoustical Insulation Program or SAH AlP. TELEPHONE COMPLAINT CALLS (January - March 1998) The Airport's Access and Noise Office receives and investigates noise calls and complaints from local citizens and all other sources. During the first quarter of 1998, the Office received a total of 332 complaints from local citizens, a 1% decrease from the 337 complaints received during the previous quarter and an increase of 48% from the 224 complaints received during the same quarter of 1997. Figure 4 shows the distribution of the quarterly telephone calls and complaints from local communities. FIGURE 4 QUARTERLY TELEPHONE CALL AND COMPLAINT SUMMARY S.A. Heights Costa Mesa Westcliff Eastbluff *Balboa/Corona Del Mar Other Areas Tustin/Orange ~ 37 Santa Aha i 11 ~ 3o -~ 161 0 50 100 150 NUMBER OF COMPLAINTS *One caller was responsible for 25% of calls 200 RG:jw lsl QUARTER 199g 5/22/98 -5- TABLE 2 LONG TERM MEASURED LEVEI.3 Aircraft CN]I~L from 2/97 through 1/98 RMS NUMBER (dB CNEL) 1 2 3 21 22 24 6 7 g 9 APR. 1997 65.6 65.6 64.0 # DAYS 28 23 29 MAY 1997 65.8 66.0 64.2 # DAYS 31 28 31 JUNE 1997 65.9 67.2 64.6 # DAYS 30 22 3O Q-2 1997 65~ ~ 64_3 # DAYS 89 73 90 JULY !1997 66.4 65.9 64.5 # DAYS 31 31 31 AUG. 1997 66.3 65.8 6.42 # DAYS 31 30 31 SEPT. 1997 66.3 65.6 64.3 # DAYS 30 29 3O Q-3 199~ 66.3 6S.8 64.3 # DAYS 92 90 92 OCT. 1997 65.9 65.2 64.2 # DAYS 31 3O 30 NOV. 1997 66.4 65.9 64.3 # DAYS 30 30 30 DEC. 1997 65.2 64.9 65.3 # DAYS 31 20 30 Q-4 1S97 (~.9 6~.4 64.6 # DAYS 92 80 90 · JAN. 1998 66.5 66.0 64.6 # DAYS 31 31 31 FEB. 1998 66.6 663 64.7 # DAYS 28 28 28 MAR. 1998 66.6 65.7 64.7 # DAYS 15 23 28 Q-I 1995 663 6~.0 64.6 # DAYS 74 82 S'/ Q-2 1997 THRU Q-I 1998: TOTAL 66.1 65.9 64.5 # DAYS 347 325 359 Q-I 1997 THRU Q-4 1997 (Previous 4 Quart~n): TOTAL 66.0 65.7 64.4 # DAYS 363 332 360 CHANGE FROM PREVIOUS 4 QUARTERS: 0.1 O.2 0.1 56.5 58.3 59.4 61.2 56.4 53.5 67.8 30 30 30 23 22 18 28 55.5 58.4 59.2 56.9 56.6 55.2 68.4 26 31 31 28 29 24 31 58.7 59.2 60.2 56.6 54.6 50.7 69.4 30 30 30 30 30 27 27 57.2 ~.7 ~9.6 ~ ~.9 S3.4 68.6 86 91 91 81 81 69 86 58.2 60.5 60.3 58.3 54.4 53.3 68.4 29 23 31 30 29 29 31 58.0 59.2 59.5 57.4 53.7 58.6 68.1 31 31 31 28 29 22 30 57.5 59.9 59.3 56.3 52.4 56.8 68.1 30 29 30 27 24 26 30 57.9 59.9 ~9.B 57.4 S3.6 ~ 682 90 83 92 8fl 82 77 91 58.0 59.1 58.6 56.5 57.0 53.9 67.0 27 26 11 31 29 31 31 58.1 59.3 59.9 56.8 56.0 52.4 66.0 27 25 27 27 29 30 28 57.6 58.9 60.0 55.1 56.0 53.0 63.9 27 21 20 29 25 29 26 57.9 59.1 59.7 562 $6.4 .r~3.2 65.9 81 72 S8 87 83 90 8S ' 58~1 58.9 60.0 56.2 57.4 50.7 67.4 29 12 31 31 29 27 30 59.8 60.0 60.2 58.0 58.3 5 l.g 68.3 28 8 27 15 28 27 28 59.4 62.0 60.2 58.1 56.9 47.7 67.9 27 30 31 26 28 27 27 59.2 61.2 60.1 57.4 57.6 S0.4 67.9 84 50 89 72 85 81 8S 58.1 59.6 59.8 57.4 56.1 53.9 67.8 341 296 330 325 331 317 347 57.8 60.0 59.7 57.3 55.9 54.9 67.7 ! 84 i 68 163 315 331 306 349 0.3 -0.4 0.1 0.1 0.2 -1.0 0.1 RG:jw Isa QUARTER 1998 5/22/98 -6- RMS NUMBER (dB CNEL) Dam 1 2 TABLE 3 DAILY CNEL VALUES AT EACH MONITOR STATION JANUARY 1998 3 21 22 24 6 7 8 9 1 63.8 63.4 2 65.7 65.3 3 65.4 64.8 4 67.2 66.7 5 66.8 66.0 6 65.8 65.5 7 67.6 65.7 8 67.0 66.5 9 66.1 65.6 10 66.4 63.9 I 1 67.4 66.5 12 66.6 66.3 13 61.1 66.5 14 67.6 66.4 15 68.5 67.8 16 67.7 67.3 17 64.3 64.2 18 66.2 65.9 19 66.4 66.3 20 66.8 66.4 21 66.9 65.7 22 66.8 66.4 23 67.6 67.1 24 63.6 64.2 25 66.2 65.7 26 67.4 66.9 27 66.6 66.3 28 66.4 65.9 29 66.1 66.5 · 30 67.0 66.7 31 63.6 63.7 61.9 55.6 56.4 57.4 56.4 55.2 49.5 52.1 64.2 57.8 59.0 59.3 55.4 58.4 48.4 0.0 62.8 57.1 58.6 58.6 55.0 56.6 44.7 63.0 64.7 59.1 59.0 60.1 56.5 57.8 49.5 65.8 64.0 57.5 57.8 59.2 55.6 55.2 51.7 66.8 64.1 56.7 57.2 58.5 54.2 55.9 54.4 61.8 64.8 59.7 61.7 61.1 55.2 55.9 50.3 67.6 65.3 58.6 59.8 60.5 56.9 57.3 51.1 69.5 64.0 58.8 60.5 60.0 56.5 0.0 * 56.4 69.8 62.1 57.1 56.3 58.2 57.5 59.4 0.0 * 65.2 64.9 58.4 58.2 60.0 56.4 57.4 45.8 68.6 64.7 58.8 59.1 60.4 56.7 59.3 49.1 68.8 64.7 58.4 0.0 * 60.1 56.2 57.5 50.9 68.0 65.9 59.0 0.0 * 61.2 57.2 57.9 52.1 68.1 67.2 59.6 0.0 * 61.7 56.2 59.4 51.7 69.2 65.7 59.3 0.0 * 61.0 57.5 58.7 49.6 69.3 62.6 56.7 0.0 * 57.7 54.6 56.4 47.1 66.4 64.1 57.8 0.0 * 59.6 55.4 59.7 46.6 69.0 64.6 0.0 * 0.0 * 60.4 59.4 57.2 50.9 68.5 64.3 58.2 0.0 * 59.5 55.9 57.4 0.0 * 67.8 65.5 58.2 0.0 * 61.2 56.7 56.4 51.1 67.0 64.6 57.6 0.0 * 59.9 55.7 56.7 53.4 67.1 64.6 58.3 0.0 * 59.8 55.8 57.0 53.6 67.1 61.8 56.1 0.0 * 57.0 53.4 54.9 48.6 63.8 64.7 57.6 0.0 * 59.2 55.8 56.6 48.6 62.6 65.7 59.0 0.0 * 60.5 55.8 58.1 50.2 68.5 64.6 58.2 0.0 * 60.0 55.9 57.9 0.0 * 68.0 64.3 58.3 0.0 * 59.9 56.5 58.6 0.0 * 68.5 64.3 0.0 * 0.0 * 59.6 56.4 0.0 * 47.3 69.1 65.2 58.8 0.0 * 60.9 57.4 56.9 48.3 67.9 65.1 56.5 0.0 * 61.9 54.0 53.1 40.5 63.3 Dpts = 31 31 En.Avg= 66.5 66.0 31 29 12 31 31 29 27 30 64.6 58.1 58.9 60.0 56.2 57.4 50.7 67.4 * Insu~cicnt data RG:jw 1st QUARTER 1998 5~9g -7- RlvlS NUMBER (dB CNEL) Date 1 2 TABLE 4 DAILY CNEL VALUES AT EACH MONITOR STATION FEBRUARY 1998 3 21 22 24 6 7 8 9 1 65.0 64.4 2 67.1 66.3 3 66.6 66.8 4 66.7 65.9 5 67.3 66.6 6 66.5 66.9 7 65.1 67.0 8 67.4 66.6 9 67.0 66.5 10 67.3 66.6 11 66.2 66.1 12 67.5 67.8 13 67.9 67.3 14 64.1 65.0 15 65.8 65.4 16 67.6 67.0 o 17 66.1 65.9 18 67.3 66.7 19 67.7 67.5 20 67.0 66.5 21 64.7 64.5 22 67.0 66.6 23 66.6 66.9 24 65.2 64.9 25 65.7 65.5 26 66.6 66.2 27 67.5 66.8 28 64.2 64.3 63.5 56.3 0.0 * 59.1 54.4 58.0 48.9 63.6 64.6 58.5 0.0 * 60.6 ~56.7 58.6 43.5 69.1 65.5 61.4 0.0 * 0.0 * 0.0 * 59.7 54.0 68.8 65.5 60.9 0.0 * 60.8 57.5 58.1 45.9 68.8 65.3 58.3 0.0 * 61.3 56.7 57.2 46.7 68.8 64.7 61.2 0.0 * 62.0 61.0 60.4 51.2 70.1 62.5 61.0 0.0 * 61.0 0.0 * 58.4 60.9 68.0 65.0 59.5 0.0 * 60.2 56.7 58.9' 49.7 68.8 64.9 59.6 0.0 * 60.0 56.7 56.1 45.1 67.9 64.6 60.0 0.0 * 60.4 57.0 56.5 42.2 68.5 64.5 59.6 0.0 * 60.2 57.0 58.4 41.1 68.9 66.0 60.8 0.0 * 61.0 57.5 57.9 52.8 67.1 66.0 60.3 0.0 * 61.7 58.0 58.9 48.7 69.1 62.5 61.0 0.0 * 58.2 60.8 60.9 52.6 70.2 64.1 58.3 0.0 * 59.1 0.0 * 55.7 47.3 66.4 65.4 59.6 0.0 * 60.5 0.0 * 59.1 44.6 68.6 64.9 59.9 0.0 * 60.3 0.0 * 57.2 48.6 .68.4 65.1 59.3 0.0 * 60.4 0.0 * 57.3 45.5 66.3 65.4 59.7 0.0 * 60.5 57.5 60.2 57.1 69.4 64.6 60.4 55.6 59.1 55.9 55.3 44.8 67.8 62.9 57.3 58.1 58.1 0.0 * 55.3 32.8 66.1 66.0 61.3 59.2 59.5 0.0 * 60.4 0.0 * 69.8 64.9 61.5 62.7 61.3 0.0 * 62.6 57.7 70.2 63.9 60.7 60.1 60.0 0.0 * 56.8 43.8 68.1 64.2 58.7 58.5 60.1 0.0 * 56.5 49.4 67.6 64.2 58.8 59.6 59.9 61.0 55.1 46.6 67.7 65.0 59.4 0.0 * 60.3 0.0 * 56.1 49.6 68.0 62.4 56.4 62.1 57.0 0.0 * 52.7 48.8 65.2 Dpts = 28 28 En.Avg= 66.6 66.3 * Insufficimt data 28 28 8 27 15 28 27 28 64.7 59.8 60.0 60.2 58.0 58.3 51.8 68.3 RO:jw 1st QUARTER 1998 5~2/98 -8- RMS NUMBER (dB CNEL) Date 1 2 TABLE 5 DAILY CNEL VALUES AT EACH MONITOR STATION MARCH 1998 3 '21 22 24 6 7 8 9 I 66.5 66.2 2 66.3 65.9 3 65.9 65.6 4 66.0 66.0 5 67.0 66.3 6 66.8 67.0 7 61.5 61.2 8 66.0 65.7 9 66.2 65.7 10 65.8 65.2 11 65.8 65.6 12 0.0 * 65.5 13 0.0 * 66.2 14 0.0 * 64.3 15 0.0 * 66.4 16 0.0 * 65.9 17 0.0 * 65.6 18 0.0 * 65.7 19 '0.0 * 0.0 20 0.0 * 0.0 21 0.0 * 0.0 22 0.0 * 0.0 23 0.0 * 0.0 24 0.0 * 0.0 25 0.0 * 0.0 26 0.0 * 0.0 27 0.0 * 64.7 28 66.5 64.6 29 67.8 66.0 30 67.4 65.1 31 69.2 67.1 Dpts = 15 23 En.Avg= 66.6 65.7 * Insufficimt data 64.2 64.6 64.1 64.2 65.2 65.2 0.0 63.9 63.5 63.9 63.9 64.2 64.4 60.7 0.0 0.0 64.1 64.9 * 66.1 * 65.0 * 64.4 * 64.3 * 64.6 * 63.8 * 64.7 * 64.9 64.6 64.5 64.9 63.6 68.8 58.2 62.5 58.9 0.0 * 55.1 50.6 67.1 59.9 61.5 59.7 0.0 * 57.2 41.2 68.0 59.1 62.6 60.1 0.0 * 58.7 43.0 68.7 58.2 62.0 60.4 53.8 57.1 46.4 68.5 59.4 65.5 61.4 59.0 0.0 * 42.4 0.0 60.9 60.8 60.7 57.2 56.2 0.0 * 67.3 53.4 56.1 56.0 58.9 52.3 41.1 63.5 58.3 58.7 59.5 56.7 55.4 52.1 67.4 58.4 58.4 58.7 55.6 54.5 41.6 66.3 57.1 58.3 59.2 53.9 53.6 54.4 64.8 57.6 58.9 58.9 59.3 54.7 44.9 67.6 57.9 62.2 60.8 57.2 57.2 45.5 68.6 59.1 64.0 60.5 56.5 58.8 45.1 68.8 56.8 60.0 57.4 55.0 52.0 50.7 65.2 59.0 64.1 60.9 57.1 58.2 0.0 * 69.0 61.2 60.7 59.8 56.6 58.5 47.0 -68.8 60.9 65.3 59.5 60.2 58.5 41.7 68.9 0.0 * 66.4 60.8 56.2 58.9 46.6 69.4 0.0 * 0.0 * 61.2 56.4 56.8 42.5 68.5 62.4 61.7 60.1 57.2 59.7 46.1 69.6 58.0 59.1 58.4 59.0 54.5 44.0 65.7 · 58.5 61.7 58.9 57.2 54.8 47.6 65.1 58.7 60.6 59.6 61.4 54.8 49.4 67.1 62.7 60.8 59.0 56.9 57.2 44.0 68.7 60.1 62.0 61.6 0.0 * 0.0 * 0.0 * 69.0 60.3 61.2 60.4 58.3 59.2 46.9 69.2 60.3 61.4 59.9 59.3 0.0 * 0.0 * 69.4 0.0 * 63.8 62.3 0.0 * 56.7 51.3 0.0 59.1 60.9 60.0 58.8 56.5 47.3 0.0 58.1 60.8 58.9 59.1 54.9 48.9 0.0 0.0 * 61.2 64.8 61.4 58.3 44.4 64.1 28 27 30 31 26 28 27 27 64.7 59.4 62.0 60.2 58.1 56.9 47.7 67.9 RG~w 1~ QUARTERI998 5~2~8 -9- COMMERCIAL TABLE 6 MEASURED AVERAGE SINGLE EVENT NOISE EXPOSUKE LEVELS January- March 1998 Departure Noise Monitor Station Class A dB SEN'EL Camcr AC Type # IX'Is* RMS-1 RMS-2 RMS-3 RMS-21 RMS-22 RMS-24 RMS-6 Alaska B7374 339 Avm-ag¢ 95.9 95.2 92.7 87.7 86.7 88.0 84.8 Count (277) (296) (331) (326) (161) (335) (276) Arum'lean B757 324 Avm'age 91.6 91. g 90.0 85.6 86.1 86.2 83.1 Count (261) (277) (311) (302) (143) (321) (246) MDB0 91 Av~ag~ 101.2 100.9 99.4 92.8 92.7 93.8 91.2 Count (75) (7~) (87) (89) (46) (89) (67) America West A320 17 Average 92.2 92.0 90.3 84.9 87.0 85.8 80.8 Count (15) (16) (17) (16) (17) (17) (7) 7373 152 Avmage 93.2 93.0 90.4 85.3 86.5 87.0 82.9 Count (123) (129) (148) (147) (65) (151) (126) Continental B7373 309 Avm'age 95.7. 94.9 93.8 87.7 88.6 87.7 84.1 Count (246) (259) (301) (304) (149) (309) (250) B757 84 Average 96.2 96.3 93.2 87.8 88.3 88.4 85.6 Count (66) (68) (79) (84) (41) (82) (70) l~lta B757 249 Averagm 94.0 93.6 91.6 $5.6 86.8 85.7 82.0 Count (205) (214) (242) (237) (113) (245) (184) FmtF~ A300 I Av~ag~ 99.0 98.2 96.0 93.7 86.7 89.3 88.4 Count (1) (1) (1) (1) (1) (1) (1) A310 61 Av~rag~ 98.7 98.1 96.7 91.4 91.1 91.9 88.8 Count (50) (55) (61) (58) (29) (61) (50) Northwest A320 389 Average 95.7 94.7 92.9 86.7 88.4 87.3 83.4 Count (311) (324) (378) (376) (190) (385) (312) Reno MDB0 465 Awn'age 98.0 97.6 96.8 9 I. 1 91.5 92.3 89.5 Count (379) (398) (454) (456) (223) (463) (382) Southwest B7373 181 Average 94.7 94.3 91.2 85.8 86.5 86.4 82.7 Count (147) (157) (177) (175) (91) (179) (147) TWA B757 100 Avmagc 92.0 91.7 88.9 83.4 83.7 84.2 80.7 Count (78) (79) (97) (100) (49) (99) ~, o/ MDB0 154 Av~ag~ 98.9 98.5 96.7 90.1 89.6 92.3 89.9 Count (133) (137) (148) (153) (69) (154) (120) United A320 105 Av~ag~ 92.4 92.3 90.8 85.2 86.5 86.8 84.2 Count (89) (88) (102) (94) (52) (104) (73) B7373 38 Average 95.2 94.8 93.0 86.5 88.2 87.5 84.1 Count (38) (38) (38) (38) (4) (36) (36) B737 22 Awn'age 94.1 92.5 90.0 84.4 84.4 85.1 83.2 Count (8) (14) (21) (22) (21) (21) (21) U~S B757 6 ! Average 93.6 93.4 90.6 84.6 86.5 86.6 82.5 Count (50) (55) (60) (41) (26) (60) (47) USAir B7373 158 Aw-rage 97.8 96.6 97.1 90.6 90.8 91.3 87.9 Count (129) (131) (155) (154) (77) (156) (129) * # Deps equals thc numbm' ofaircra~ departure operation SENEL values measured at one or more departure noise monitor stations. Not every departure is measured at every monitor. RG:jw 1st QUARTER 1998 - 10- 6/17/98 TABLE ? MEASURED AVERAGE SINGLE EVENT NOISE EXPOSURE LEVELS January - March 1998 COMMERCIAL Departure Noise Monitor Station Class AA dB SENEL Carrier AC Type # Deps* RM$-I RMS-2 RMS-3 RMS-21 RMS-22 RMS-24 RMS-6 Alaska B7374 153 Average 93.4 93.2 90.2 86.1 85.6 86.2 82.9 Count (124) (135) (150) (148) (73) (152) (124) American B757 707 Average 91. ! 91.2 89.8 85.2 85.6 85.9 82.9 Count (566) (589) (686) (659) (318) (701) (533) America West B7373 816 Average 93.2 93.0 90.3 85.5 86.2 86.5 83.0 Count (671) (707) (795) (783) (392) (807) (668) B757 73 Average 91.4 91.8 88.8 84.5 84.3 83.5 80.2 Count (59) (65) (70) (59) (29) (72) (23) Delta B757 86 Average 92.4 92.6 89.9 84.9 85.6 84.3 80.1 Count (71) (75) (84) (78) (41) (85) (66) MDg0 25 i Average 9 !. 1 90.5 88.8 82.8 82.5 84.2 81.6 Count (205) (220) (243) (210) (111) (247) (148) Reno MD90 81 Average 87.4 87.3 86.2 82.7 82.2 81.3 79.5 Count ( 67 (69) (78) (66) (35) (77) (13) Southwest B7373 181 Average 93.9 93.7 90.4 85.6 86.6 86.2 82.6 Count (146) (152) (175) (173) (89) (178) (144) United A320 94 Avm-age 92.2 91.8 90.4 85.2 86.3 86.1 84.0 Count (64) (76) (90) (94) (64) (93) (69) B757 295 Average 92.3 91.9 89.4 83.6 84.4 85.1 82.5 Count (229) (246) (286) (285) (139) (293) (250) COMMERCIAL Departure Noise Monitor Station Class E dB SENEL Carrier AC Type # Deps* RMS-I RMS-2 RMS-3 RMS-21 RMS-22 RMS-24 RMS-6 Alaska B7374 457 Average 9 !.2 91.4 88.7 85.4 84.8 85.1 82.3 Count (373) (394) (446) (448) (221 ) (454) (372) America West B7373 477 Average 91.3 91.5 88.8 84.9 85.6 85.2 8 !.7 Count (382) (4 ! 0) (465) (456) (232) (474) (370) Delta MDg0 170 Average 91.0 90.3 88.6 g ! .9 82.1 85.0 81.6 Count (134) (144) (163) (146) (75) (169) (105) Reno MDg0 609 Avm'age 88.9 88.7 87.4 82.5 82.6 82.6 81.0 Count (496) (523) (598) (511) (278) (595) (201) Southwest B7373 806 Average 92.2 92.4 89.0 84.9 85.5 85.0 81.6 Count (668) (714) (785) --{778) (373) (797) (620) United A320 4 Average 91.7 90.9 89.9 85.5 88.3 87.3 84.9 Count (3) (3) (4) (4) (2) (4) (4) 757 g01 Average 90.6 90.5 88.1 83.0 83.5 83.9 81.7 Count (663) (700) (779) (748) (365) (793) (604) * # Deps equals the number of aircraft departure operation SENEL values measured at one or more departure noise monitor stations. Not every departure is measured at every monitor. RO:jw - 1 1- 1st QUARTER 1998 6/17/98 TABLE 8 MEASURED AVERAGE SINGLE EVENT NOISE EXPOSURE LEVELS Janua~ - March 1998 COMMUTER Class E Departure Noise Momtor Station dB SENEL C~rier AC Type # Deps* R.MS-I RMS-2 RMS-3 RMS-21 RMS-22 RMS-24 RMS-6 Skyw~ (Delta Connect.) West Air CUnited Expre~) CL60 83 Average 85.9 84.2 86.6 78.6 80.8 80.8 86. I Count (66) (67) (80) (54) (33) (78) (4) E 120 415 Average 80.8 82.1 81.2 77.6 79.6 76.9 79.3 Count (352) (341) (261) (298) (58) (261) (4) BA31 500 Ave-rage 82.4 81.6 82.5 77.5 78.8 77.5 80~2 Count (410) (265) . (199) (I 10) (124) (344) (6) E 120 116 Average 80.5 82.5 81.3 77.5 79.3 76.6 93.4 Count (115) (110) (105) '(91) (6) (71) (1) GENERAL AVIATION Dcpatture Noise Momtor Station dB SENEL Carrier # Dc-ps* RMS-I RMS-2 RMS-3 RMS-21 RMS-22 RMS-24 RMS-6 Private Jt~,s 1584 Average 91.4 90.2 91.7 85.4 87.8 86.3 85.9 .Count (1278) (1326) (1474) (1141) (645) (1385) (512) * # Dc'ps equals the number of aircraft departure operation SENEL values measurcd at one or more departure noise monitor stations. Not cvcry dcpamare is measured at cvcry monitor. RO:jw ~,t 0UAg~ ~s -12- 5/22/98 NOISE ABATEMENT COMMITTEE MEETING DATE: March 18, 1998 TIME: 2:00 p.m. PLACE: Terminal Conference Room #1 AGENDA ITEMS AND ITEMS DISCUSSED: 1. Airport Statistics for Calendar Year 1998 John Leyerle gave an update of the Airport Stats as published in the Monthly News Release. General aviation operations accounted for 76% of all operations at John Wayne Airport. 2. Commuter Carder Changes Expected for the 1998-99 Plan Year Executive Express H has expressed interest in operating fi.om JWA. Operations are planned to start in June. 3. 1997-98 Plan Year Capacity Allocations Approved by the Board of Supervisors The Board of Supervisors has approved the 1998-1999 Plan Year Capacity Allocations for eleven passenger carriers, two commuter carriers and two cargo carriers for the period April 1, 1998 through March 31, 1999. 4. Replacement Monitoring System Progress and Up-Coming Milestones We are continuing a side-by-side test of noise levels fi.om the existing system and our new Noise Monitoring System. We expect to complete acceptance of the Monitoring System in the Fall of 1998. 5. Status of the Santa Aha Heights Acoustical Insulation Program Ten more houses have been acoustically insulated and made compatible during the first quarter of 1998. 6. Tentative Date for Our Next Meeting May 20, 1998 RG:jw ls~ QUARTER 199g 5/22/9g -15- NAC ROSTER March 18, 1998 NAME ADDRESS PHONE NO. John Leyerle Gail Reavis R. M. Wolff Carl Braatz Rita Jones Toni M. Callaway Julie Agapinan Roland Ruegg John Trautman Clarke Balzer Dennis Anderson Tom Higgins Mark Esslinger Kathy Lieffeis JWA, Ao:ess and Noise 21281 Astoria, M.V. 511 Gorgonia, N.B 92660 John Wayne Airport 20401 Cypress, N.B 92660 1101 Castlegate Ln., S.A. 92705 Skywest Delta Continental Southwest America West TWA Planning 1940 E. Edinger, S.A. 252-5043 461-0020 640-2707 252-5125 756-9126 731-1803 252-6152 252-5911 252-5850 252-637! 252-6161 31442%9452 834-5045 258-2500 RG:jw QUARTER 1998 5~2/98 RECEIVED SEP 2 5 ~998 COMMUNITY DEVELOPMENt' NOISE ABATEMENT PROGRAM QUARTERLY REPORT For the period: April 1, 1998 through June 30, 1998 Prepared in accordance with: AIRPORT NOISE STANDARD STATE OF CAI~ORNIA California Administrative Code Title 21, Chapter 2.5, SubChapter 6: Division of Aeronautics Noise Standards Submitted by~q O. B. Schooley // Airport Director John Wayne Airport, Orange County INTRODUCTION This is the 102nd Quarterly Report submitted by the County of Orange in accordance with the requirements of the California Airport Noise Standards (California Administrative Code Tire 21, Chapter 2.5, SubChapter 6: Division of Aeronautics Noise Standards). Effective January 1, 1986, the criteria for defining "Noise Impact Area" was changed from 70 dB to 65 dB Community Noise Equivalent Level (CNEL). Under this criteria, John Wayne Airport currently has a "Noise Impact Area." NOISE IMPACT SUMMARY Calms' Aeronautics Program has established guidelines in the California State Noise Standard to control residential area noise levels produced by aircraft operations using the State's airports. Under those guidelines, residential noise sensitive areas exposed to an average Community Noise Equivalent Level (CNEL) of more than 65 dB define the "Noise Annual Impact Area." John Wayne Airport uses ten permanent remote, monitoring stations (RMS) located in Newport Beach, Santa Ana, Tustin and L'vine to measure noise levels, at the following locations: MONITOR STATIONS RMS- 1: Golf Course: 3100 Irvine Ave., Newport Beach RMS-8: RMS-2:20152 S.W. Birch St., Santa Ana RMS-9: RMS-3: 2139 Anniversary Lane, Newport Beach RMS-21: RMS-6: 1131 Back Bay Drive, Newport Beach RMS-22: RMS-7: 17952 Beneta Way, Tustin RMS-24: 1300 S. Grand Avenue, Santa Ana 17372 Eastman Street, Irvine 223 Nata, Newport Beach 2338 Tustin Ave., Newport Beach 1918 Santiago, Newport Beach The map in Figure 1 shows the general location of each permanent remote monitor station. Figure 2 shows the Airport's "Noise Impact Area" for the previous year (July 1, 1997 - June 30, 1998). The Figure 2 information was developed by Mestre-Greve Associates, Inc., in consultation with John Wayne Airport. CNEL values measured for the period and current digitized land use information were utilized to calculate the land area acreages, number of residences and estimated number of people within the "Noise Impact Area". RG:jw 2nd QUARTER 1998 7/27/98 -1- · FIGURE 1 JOHN WAYNE STAT! O N LOCATI O N ! 1 ! AIRPORT MAP JOHN WAYNE )RANGE JNTY M = REMOTE MONITORING STATION FIGURE 2 L IJlllF} EEI'SOUTH l , _ LEGEND Single Family R~sid~d Multi~l¥ Re~id~n~ :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: (Numlx:r indi~ dwelling units) Incompatible Land Use Area: 27.6 ac~'es or 0.044 square miles Number of Dwellings: 120 Number of People: 300 (Based on 2.5 people per D. U.) JOHN WAYNE AIRPORT 65 dB CNEL IMPACT AREA JULY 1997 - JUNE 1998 -3- JOHN WAYNE AIRPORT AIRCRAFT TRAFFIC SUMMARY The Airport traffic summary for tiffs quarter is shown in Table i and Figure 3 below. Air Carder operational count histories and average daily departure counts are illustrated in Tables 9 & 10. TABLE 1 LANDING AND TAKEOFF OPERATIONS _April - June 1998 Jet Propeller Business (I) Total (2) Average Daily Month/Quarte~r Air Careers Air Carriers Jet Aircraft O~erations Jet Operation.q April 6,5 96 876 1,083 38,684 255 May 6,626 1,020 1,171 38,966 251 June 6.491 78~4 1.222 38.270 25__27 Second Quarter 19,713 2,680 3,476 115,920 254 PREVIOUS 12 MONTHS: 74,304 14,365 12,313 430,307 237 07/01/97 - 06/3 0/98 NOTE_: (1) Business Jet figures include a 5% factor for operations not identified by the JWA noise monitor stations. (2) Counts in this column are based upon records prodded by the local FAA representatives. FIGURE 3 QUARTERLY AIRPORT TRAFFIC SUMMARY (LANDING AND TAKEOFF OPERATIONS) Jet Carder Military Prop Carder Business Jet GA Propeller i 19713 2680 3476 ~~ 90020 0 20000 40000 60000 80000 100000 ~G:jw 2nd QUARTER 1998 7/27/9g -4- COMMUNITY NOISE EQUIVALENT LEVELS The monthly, quarterly and twelve month Community Noise Equivalent Level (CNEL) average values for each monitor station are shown in Table 2, while daily CNEL values are shown in Tables 3 through 5. Insufficient data is indicated by "0.0" entries in each table. Average Single Event Noise Exposure Level (SENEL) values for Air Carrier and Business Jet aircraft are showx~ in Tables 6 through 8. For the twelve month period ending June 30, 1998, 120 dwelling units in Santa Aha Heights were in the "Noise Impacted Area" (within the 65 dB CNEL contour); there ,,vas an increase of 2 in the number of dwelling units in the '~oise Impacted Area" from the previous t~velve month period ending March 31, 1998. The State has approved several remedies of aircraft noise levels for noise sensitive property in the ~Xloise Impact Area": homes can be acoustically insulated, purchased by the County, or rezoned for "other non-noise sensitive uses." As part of the County's Santa Ama Heights Land Use Compatibility Program, approximately 77 general agriculture (A-l) properties vdth residential land uses on Orchard, Acacia and Birch Streets were rezoned for Business Park Use in October, 1986. Each property was individually sold and subsequently converted to compatible land use. Benveen 1986 and 1993, 124 residences were purchased or other,vise made compatible through the County's Purchase Assurance Program, Acoustical Insulation Program or Housing Relocation Program. In September 1993, the FAA approved a grant to fund a voluntary acoustical insulation program titled "Santa Ana Heights Acoustical Insulation Program" ("SAH ALP"). During the second quarter of 1998, no additional residences have been made compatible through the County's SAH AIP. A total of 214 residences in Santa Aha Heights have been purchased or otherwise made compatible through the County's Purchase Assurance Program, Housing Relocation Program, Acoustical Insulation Program or SAH AIP. TELEPHONE COMPLAINT CALLS (April - June 1998) The Airport's Access and Noise Office receives and investigates noise calls and complaints from local citizens and all other sources. During the second quarter of 1998, the Office received a total of 566 complaints fi'om local citizens, a 70% increase fi'om the 332 complaints received during the previous quarter and a decrease of 43% from the 1,002 complaints received during the same quarter of 1997. Figure 4 shows the distribution of the auarterlv telephone calls and complaints from local communities. RG:jw 2nd QUARTER 1998 9/16/98 FIGURE 4 QUARTERLY TELEPHONE CALL AND COMPLAINT SUMMARY Tustin/Orange i 64 S.A. Heights Costa Mesa Westcliff Eastbluff 'Balboa/Corona Del Mar Other Areas SantaAna ~ 12 !1~o ~11~5 ~ 40 L ........ _ .... 328 0 50 100 150 200 250 300 350 NUMBER OF COMPLAINTS *one caller responsible for 35% of calls -5- TABLE 2 LONG TERM MEASURED LEVEI~ Aircraft CNEL from 7/97 through 6/98 RMS NUMBER (dB CNEL) 1 2 3 21 22 24 6 7 8 9 JULY 1997 66.4 65.9 64.5 # DAYS 31 31 31 AUG. 1997 66.3 65.8 6.42 #DAYS 31 30 31 SEPT. 1997 66.3 65.6 64.3 # DAYS 3O 29 30 Q-3 1997 66.3 65.8 64.3 # DAYS 92 90 92 OCT. 1997 65.9 65.2 64.2 # DAYS 31 30 30 NOV. 1997 66.4 65.9 64.3 # DAYS 30 30 30 DEC. 1997 65.2 64.9 65.3 # DAYS 31 20 30 Q-41997 65.9 65.4 64.6 # DAYS 92 gO 90 JAN. 1998 66.5 66.0 64.6 # DAYS 31 31 31 FEB. 1998 66.6 66.3 64.7 # DAYS 28 28 28 MAR. 1998 66.6 65.7 64.7 # DAYS 15 23 28 Q-I 1998 66.5 66.0 64.6 # DAYS 74 82 87 APR. 1998 67.1 66.0 65.7 # DAYS 1 3O 3O MAY 1998 66.5 65.6 65.3 # DAYS 31 31 31 JUNE 1998 65.5 65.8 64.5 # DAYS 30 30 30 Q-2 1998 66.5 65.8 65.2 # DAYS 62 91 91 Q-3 1997 THRU Q-2 1998: TOTAL 66.3 65.8 64.7 # DAYS 320 343 360 Q-2 1997 THRU Q-1 1998 (Previous 4 Quarters): TOTAL 66.1 65.9 64.5 # DAYS 347 325 359 CHANGE FROM PREVIOUS 4 QUARTERS: 0.2 -0.1 0.2 58.2 60.5 60.3 29 23 31 58.0 59.2 59.5 31 31 31 57.5 59.9 59.3 30 29 30 57.9 59.9 59.8 90 83 92 58.0 59.1 58.6 27 26 11 58.1 59.3 59.9 27 25 27 57.6 58.9 60.0 27 21 20 57.9 59.1 59.7 81 72 58 58.1 58.9 60.0 29 12 31 59.8 60.0 60.2 28 8 27 59.4 62.0 60.2 27 30 31 59~ 61~ 60.1 84 50 89 61.4 62.2 59.9 30 30 30 61.1 62.5 60.2 31 22 31 59.6 63.8 60.8 8 29 30 61.1 62.9 603 69 81 91 58.3 30 57.4 28 56.3 27 57.4 85 56.5 31 56.8 27 55.1 29 56.2 31 58.0 15 58.1 26 57.4 72 57.1 3O 56.8 29 57.1 29 57.0 54.4 29 53.7 29 52.4 24 53.6 82 57.0 29 56.0 29 56.0 25 56.4 57.4 29 58.3 28 56.9 28 57.6 56.7 29 57.3 31 57.4 30 57.1 90 53.3 29 58.6 22 56.8 26 56.5 77 53.9 31 52.4 30 53.0 29 9O 50.7 27 51.8 27 47.7 27 50.4 81 45.8 28 45.5 30 47.8 29 68.4 31 68.1 30 68.1 30 68.2 91 67.0 31 66.0 28 63.9 26 65.9 85 67.4 30 68.3 28 67.9 27 67.9 85 66.3 19 69.3 30 68.0 30 79 59.1 61.0 60.0 57.0 56.5 52.9 67.7 324 286 330 332 340 335 340 58.1 59.6 59.8 57.4 56.1 53.9 67.8 341 296 330 325 331 317 347 1.0 1.4 0.2 -0.4 0.4 -1.0 -0.1 RO:jw 2nd QUARTER 1998 7/27/98 -6- Date 1 2 TABI~ 3 DAILy CNEL VALUES AT EACH MONITOR STATION APRIL 1998 3 21 22 24 6 7 8 9 I 0.0 * 65.5 64.0 2 0.0 * 66.2 64.7 3 0.0 * 66.4 65.4 4 0.0 * 63.8 62.6 5 0.0 * 65.9 63.9 6 0.0 * 65.6 64.0 7 0.0 * 65.6 64.4 8 0.0 * 65.9 63.9 9 0.0 * 66.7 65.1 10 0.0 * 65.9 64.3 11 0.0 * 64.0 64.9 12 0.0 * 66.0 64.3 13 0.0 * 66.8 65.1 14 0.0 * 67.0 65.0 15 0.0 * 66.3 64.8 16 0.0 * 66.1 64.3 17 0.0 * 67.2 66.7 18 0.0 * 65.6 65.2 19 0.0 * 66.2 66.4 20 0.0 * 66.3 68.7 21 0.0 * 65.9 68.1 22 0.0' 65.7 64.3 23 0.0 * 66.2 64.7 24 0.0 * 66.5 69.5 25 0.0 * 64.1 62.6 26 0.0 * 65.9 63.9 27 0.0' 66.7 66.8 28 0.0' 65.9 64.4 29 0.0 * 65.8 69.5 30 67.1 66.5 66.1 Dpts = 1 30 En.Avg= 67.1 66.0 * Insufficient data RG:jw 2nd QUARTER 1998 9/16/98 59.1 62.7 59.5 56.8 57.9 47.8 66.5 58.8 60.8 61.1 57.3 57.4 45.8 67.5 69.0 61.6 60.6 58.6 57.6 42.4 62.9 59.9 60.3 58.1 54.8 55.9 36.6 59.2 58.9 60.1 59.7 56.8 56.7 38.8 0.0 * 61.0 61.4 59.8 56.1 57.7 46.6 68.7 59.3 61.1 59.3 56.6 56.8 48.0 68.5 60.2 60.7 60.2 57.6 56.1 46.3 60.2 62.8 62.0 60.77 58.7 58.0 48.0 67.2 58.8 60.1 59.0 55.8 56.4 48.5 67.1 57.0 63.7 61.2 57.8 54.3 44.5 64.1 60.0 62.5 60.1 60.1 56.0 43.1 64.9 60.6 62.4 60.4 59.8 57.8 44.5 68.5 61.6 61.1 60.8 58.7 57.0 47.2 68.5 59.6 61.6 60.3 60.5 56.8 0.0 * 68.2 58.6 63.3 60.1 55.9 56.0 0.0 * 67.7 58.4 61.1 59.4 56.1 53.9 47.5 64.1 58.6 61.0 58.0 54.5 52.3 41.7 64.2 57.6 59.1 58.5 60.3 54.6 43.5 60.4 58.6 61.4 59.4 55.1 55.0 48.5 0.0 * 59.0 60.8 59.4 55.4 55.0 45.9 0.0 * 58.6 61.1 59.7 54.0 59.6 38.5 0.0 * 60.7 62.8 61.4 56.6 57.5 48.3 0.0 * 61.2 63.5 60.1 56.5 57.7 48.8 0.0 * 58.9 65.7 ' 58.4 54.1 54.5 33.7 0.0 * 61.1 64.4 59.4 56.3 56.1 45.3 0.0 * 60.6 64.0 58.9 55.6 54.7 41.6 0.0 * 64.0 61.0 58.9 53.9 55.1 46.3 64.5 66.6 62.2 59.6 55.7 0.0 * 41.4 0.0 * 61.3 63.6 60.9 56.0 59.9 47.9 0.0 * 30 30 30 30 30 29 28 19 65.7 61.4 62 .2 59.9 57.1 56.7 45 .$ 66.3 -7- R~$ ~ER (~B CNEL) Date I 2 1 67.7 66.7 2 64.5 63.7 3 65.8 65.2 4 66.6 65.7 5 67.0 66.5 6 66.7 65.8 7 66.7 66.2 8 67.8 66.9 9 64.0 63.2 10 65.6 64.9 11 66.2 65.5 12 66.9 66.4 13 66.7 66.3 14 67.8 66.8 15 68.4 67.7 16 64.7 63.7 17 66.6 65.9 18 67.1 65.6 19 66.3 65.1 20 66.5 65.2 21 67.3 66.O 22 67.8 66.5 23 65.0 64.6 24 64.6 64.0 25 65.5 64.7 26 66.1 65.1 27 66.8 66.0 28 66.3 65.8 29 67.3 66.6 30 63.5 62.7 31 66.0 65.2 ~t~ = 3~ 31 En.Avg= 66.5 65.6 * Insufficient data RG:jw 2nd QUARTER 1998 9/16/98 TABLE 4 DAILY CNEL VALUES AT EACH MONITOR STATION MAY 1998 3 21 22 24 6 67.3 61.6 63.9 61.6 58.3 65.9 59.1 60.8 59.2 56.7 66.0 60.3 61.8 59.5 56.0 64.3 62.1 62.8 60.4 56.2 64.6 61.1 63.1 59.8 56.2 64.2 62.6 63.9 61.1 56.5 64.9 63.2 63.4 60.6 56.2 66.7 64.0 65.5 61.7 56.4 62.6 58.7 61.9 57.8 54.5 64.2 60.0 61.3 59.2 56.2 64.6 61.4 61.7 61.6 57.7 67.2 62.3 61.7 60.7 57.5 64.3 62.4 63.0 60.8 57.2 66.4 62.6 62.5 61.2 57.6 65.9 62.3 62.8 62.5 58.5 64.1 58.8 60.0 58.3 54.8 67.4 60.2 64.7 59.6 58.2 66.9 60.1 58.9 58.4 54.1 66.0 59.9 61.2 59.6 54.6 64.5 60.9 61.0 61.1 59.7 65.1 61.8 63.1 61.2 57.5 66.0 61.0 56.9 60.9 0.0 * 64.4 59.7 0.0 * 58.7 0.0 * 63.3 60.6 0.0 * 58.4 56.8 63.0 59.9 0.0 * 59.0 57.1 64.7 60.9 0.0 * 60.4 56.2 65.2 61.3 0.0 * 60.7 56.2 64.6 61.1 0.0 * 60.8 55.9 67.4 61.3 0.0 * 60.5 56.9 61.1 57.7 0.0 * 56.4 55.5 64.2 59.7 0.0 * 59.2 54.8 31 31 22 31 29 65.3 61.1 62.5 60.2 56.8 -8- 7 57.4 55.2 56.5 59.3 59.1 59.3 58.1 58.8 56.1 56.7 58.0 59.4 57.2 56.1 56.9 54.7 55.1 54.6 57.7 59.2 58.7 57.5 55.2 56.2 58.9 56.9 55.8 56.3 57.3 53.5 56.1 31 57.3 8 44.6 43.6 48.9 44.6 36.1 41.9 49.2 39.2 38.8 40.4 39.6 0.0' 45.0 41.1 44.8 38.5 48.8 46.0 43.8 41.8 44.9 53.3 44.3 42.4 42.3 47.1 40.7 42.3 45.8 41.7 49.9 30 45.5 9 0.0 * 70.1 73.6 73.9 69.6 75.1 70.0 69.2 66.5 68.1 68.8 68.7 68.5 69.0 68.5 66.1 67.1 67.6 68.5 68.9 68.5 68.6 65.7 66.3 68.6 68.2 66.2 67.6 66.9 62.5 66.7 30 69.3 RMS NUMSErt (aB CNEL) Datr 1 2 TABLE 5 DAILY CNEL VALUES AT EACH MONITOR STATION .JUNE 1998 3 21 22 24 6 7 8 9 1 66.0 65.2 64.0 2 66.0 65.3 64.5 3 65.8 65.3 65.6 4 66.3 65.4 65.8 5 66.7 66.2 65.2 6 66.0 64.3 64.5 7 65.9 65.2 63.7 8 66.6 65.9 64.9 9 66.3 66.7 64.3 10 66.4 65.7 64.1 11 66.5 65.4 64.4 12 67.3 66.4 65.1 13 64.4 63.6 63.1 14 66.7 65.9 63.9 15 66.8 65.9 64.3 16 66.1 65.1 63.5 17 67.1 66.7 64.5 18 67.6 66.8 65.1 19 67.6 67.0 65.2 20 65.1 64.1 62.6 21 66.5 65.7 64.0 22 67.0 66.0 64.6 23 66.5 66.0 64.4 24 66.6 65.6 64.5 25 67.1 66.0 64.5 26 67.4 66.4 64.8 27 65.6 64.6 63.4 28 67.0 66.1 64.0 29 66.9 66.4 65.7 30 66.6 65.8 64.3 56.6 59.8 57.8 53.1 56.1 49.7 66.9 0.0 * 66.5 59.4 57.2 56.3 44.5 63.8 0.0 * 64.8 59.9 57.1 57.7 39.0 68.1 0.0 * 67.3 60.5 56.7 56.5 54.1 68.1 0.0 * 64.0 60.5 57.7 58.6 42.7 68.6 0.0 * 66.5 58.4 59.2 55.6 33.4 66.1 0.0 * 65.2 59.6 55.6 57.5 48.5 68.2 0.0 * 64.2 64.6 57.9 58.5 44.0 69.0 0.0 * 63.6 62.5 57.4 57.7 48.2 68.0 0.0 * 63.9 62.2 56.6 59.2 39.8 68.8 0.0 * 64.1 61.6 0.0 * 59.5 44.3 69.3 0.0 * 67.7 62.7 59.7 58.2 43.9 68.9 0.0 * 62.7 59.4 54.0 54.3 41.1 66.3 0.0 * 61.9 60.6 59.8 54.3 42.9 68.3 0.0 * 64.0 60.6 54.4 57.7 48.6 68.7 0.0 * 62.2 59.6 56.8 58.6 39.6 68.4 0.0 * 0.0 * 61.4 57.0 57.6 51.2 68.8 0.0 * 62.3 61.4 56.8 56.5 49.9 69.1 0.0 * 65.3 61.6 56.8 57.4 48.6 68.9 0.0 * 60.5 59.0 56.4 53.8 35.0 66.2 0.0 * 64.4 60.2 56.2 56.3 44.6 68.4 0.0 * 62.6 60.6 57.0 57.0 47.7 68.4 0.0 * 63.6 60.5 57.0 60.8 45.0 67.6 57.3 60.5 60.8 56.3 57.1 50.7 67.7 60.5 61.6 61.4 57.8 57.0 47.5 67.9 60.4 62.8 61.1 58.5 57.2 48.2 68.0 58.2 61.2 58.6 54.7 54.4 45.9 64.9 59.3 59.1 59.7 56.5 56.1 53.0 67.7 60.9 61.1 60.7 57.4 56.8 0.0 * 68.8 61.6 60.3 60.5 56.0 57.9 50.0 67.4 Dpts = 30 30 30 8 29 30 29 30 29 30 En.Avg= 66.5 65.8 64.5 59.6 63.8 60.8 57.1 57.4 47.8 68.0 * Insufficient data RG:jw 2nd QUARTER 1998 9/16/98 -9- TABLE 6 AVERAGE SING~-~ EVENT NOISE EXPOSURE LEVELS April - June 1998 COMMERCIAL Departure Noise Monitor Station Class A dB SENEL Cartier AC Type # Del~* RMS-I RMS-2 RM$-3 RM.%.21 RMS-22 RMS-24 RMS.-6 Alaska B7374 371 Awmg~ 96.5 95.4 92.9 88.2 87.7 gg.5 85.1 Count (260) (362) 069) (105) C317) 066) (366) · Amm'ican B757 259 Aw~tg~ 91.3 91.1 90.1 85.7 86.3 86.4 83.7 co~t (167) (252) (258) (79) (214) (255) (236) MI)80 146 Average 101.5 99.8 98.5 92.4 92.7 93.9 90.9 Count (106) (143) (145) (36) (116) (145) (142) Ama-ica W~t A.3 20 14 Av~'age 0.0 92.5 91.9 83.6 87.6 85.3 80.7 Co~ (0) (14) (14) (2) (14) (14) (11) 73 73 g I Avm'age 94.5 93.7 91.0 86.4 86.9 g7.6 83.6 Count (6O) (78) (81) (25) (65) (81) (79) ~ EV/373 343 Avm'ag~ 95.9 94.8 93.5 88.2 89.0 87.8 84.2 Count (235) 030) 042) (98) (295) C339) 026) B7377 70 Awrag~ 96.1 95.0 93.5 883 89.0 87.5 83.1 Count (69) (64) (70) (11) (54) (70) (67) B757 58 Av~ag~ 96.2 96.1 92.8 87.5 88.7 89.1 85.0 co~t (30) (57) (57) (20) (50) (58) (57) D~ita B757 224 Av~g¢ 94.6 93.7 92.1 85.7 86.6 86.1 82.2 Count (141) (218) (220) (64) (183) (217) (203) MI)90 30 Avex'ag~ 91.2 91.1 89.0 82.9 84.1 85.0 gl.5 Cmmt (28) (28) (29) (5) (24) (30) (27) F~IEx A310 63 Av~"age 97.9 97.0 95.8 90.3 91.2 91.4 87.g c,o~a (42) (63) (63) (2o) (53) (63) (63) Northw~t A320 374 Avm"ag~ 95.9 94.6 92.8 86.8 88.6 87.4 83.0 Count (246) 065) (374) (113) 031) Reno MI}g0 575 Awr'age 97.4 97.0 96.2 91.2 91.6 92.1 88.9 Count 089) (562) (569) (181) (477) (569) (567) MDg0 2 Average 89.2 88.3 85.6 0.0 81.6 82.0 77.4 ~ (2) (2) (2) (0) (1) (2) ( Southwmt B7373 1'79 Av~-ag~ 94.1 93.7 90.2 86.0 86.8 86.5 82.5 Count (12 I) 0?5) (177) (53) 052) 079) 0?4) co~t (1~1) (149) 053) (40 (126) 050 030 MDg0 I06 Av~a~ 97.0 97.2 95.9 90.? 89.8 92.0 a9.6 Co~t (66) (103) (105) (36) (69) 0O4) 0O4) Unit~ n320 57 Ava-a~ 91.8 91.5 90.3 ~.3 87.6 a6.~ ~3.5 co~t (3) (56) (55) (36) (56) (57) (55) B7373 53 Av~age 95.3 94.4 92.3 87.1 gg3 87.9 84.0 CO~ (53) (52) (53) (5) (41) (52) (51) B757 59 Avm"ag¢ 93.9 93.0 90.9 87.1 85.2 86. I 82.9 Count (59) (54) (59) (6) (48) (57) (59) UPS B757 64 Awn"ag~ 93.3 933 90.5 85.0 86.2 86.5 82.0 Count (43) (64) (64) (18) (51) (63) (59) USAir B7373 174 Average 97.9 96.5 96.9 90.4 91.0 91.5 87.6 C.o~t (122) 069) (172) (49) (148) (173) 070 * # Deps equals thc number ofaircra~ departur~ operation SENEL values measured at one or more departure noise monitor stations. Not every departur~ is m~sur~d ax every monitor. RG:jw 2nd QUARTER 1998 9a6~8 -10- TABLE 7 MEASURED AVER&GE SINGLE EVENT NOISE EXPOSURE LEVELS April - June 1998 COMMERCIAL Departure Noise Monitor Station Class AA dB SENEL Cartier AC Type # Deps* RMS-1 RMS-2 RMS-3 RMS-21 RMS-22 RMS-24 RMS-6 Alaska B7374 182 Average 92.3 92.3 89.6 86.3 86.1 85.8 82.4 Amedca Wes~ g~o Southwes~ Count (131) (177) (182) (49) (156) (182) (176) B757 771 Average 91.1 90.8 89.9 85.0 86.5 86.3 82.9 Count (526) (749) (765) (210) (647) (763) (694) A320 55 Average 91.3 91.0 89.2 84.9 86.9 84.7 80.7 Count (55) (50) (53) (5) (41) (54) (29) B7373 823 Awrage 92.9 92.5 89.9 85.8 86.7 86.5 83.0 Count (554) (796) (816) (249) (701 ) (816) (788) B757 27 Average 91.1 91.9 88.5 85.5 84.2 83.0 80.3 Count (4) (27) (27) (14) (25) (27) (10) B757 59 Average 91.3 91.6 89.3 84.7 85.9 84.3 80.6 Count (33) (58) (58) (16) (43) (57) (46) MDg0 289 Average 91.0 90.0 88.3 82.2 83.0 84.1 81.3 Count (206) (282) (286) (77) (241) (285) (201) MDg0 71 Awrage 88.4 88.4 86.5 81.8 85.0 82.2 80.5 Count (49) (68) (71) (17) (58) (69) (21) B7373 181 Average 93.9 93.7 90.4 85.6 86.6 86.2 82.6 Count (146) (152) (175) (173) (89) (178) (144) A320 238 Average 91.7 91.2 90.1 85.7 86.9 86.5 83.8 Count (232) (229) (235) (32) (188) (232) (230) B757 197 Average 93.0 92.1 90. I 84.9 84.8 85.8 82.6 Count (93) (192) (192) (86) (182) (197) (189) COMMERCIAL Departure Noise Monitor Station Class E dB SENEL Carrier AC Type # Deps* RMS-1 RMS-2 RMS-3 RMS-21 RMS-22 RMS-24 RMS-6 Alaska B7374 394 Average 91.0 91.0 88.6 85.5 85.6 85.1 81.7 Count (243) (389) (391) (123) (335) (392) (379) America West B7373 580 Average 91.3 91.2 88.8 85.0 85.9 85.5 81.7 Count (393) (570) (575) (173) (499) (572) (535) E~lta MDg0 148 Average 90.7 89.7 88.0 81.3 82.3 83.6 80.8 Count (92) (142) (143) (41) (125) (148) (103) Reno MDg0 562 Average 89.2 88.5 86.8 80.9 83.0 81.8 81.0 Count (386) (543) (554) (142) (470) (540) (187) Southwest B7373 806 Average 92.2 92.4 89.0 84.9 85.5 85.0 81.6 Count (668) (714) (785) (778) (373) (797) (620) United B757 844 Average 91.0 90.4 88.2 82.7 84.0 84.3 81.7 Count (553) (822) (840) (249) (712) (830) (763) * # Deps equals the number of aircraft departure operation SEN'EL values measured at one or more departure noise monitor stations. Not every departure is measured at every monitor. RG:jw 2ad QUARTER 1998 =11- 7/27/98 TABLE 8 MEASURED AVERAGE SINGLE EVENT NOISE EXPOSURE LEVELS April - June 1998 COEYMUTER Class E Departure Noise Monitor Station dB SENEL Carri~r AC Type # Deps* RMS-1 RMS-2 RMS-3 RMS-21 RMS-22 RMS-24 RMS-6 Skyw~ (D~lta Connect.) West Air (United Express) CL60 87 Average 86.1 84-2 86.6 79.4 79.2 80.2 0.0 Count (60) (86) (87) (17) (62) (84) (0) El20 980 Average 81.2 81.9 82.2 78.2 80.0 77.5 85.0 Count (764) (794) (575) (160) (280) (723) (12) BA31 273 Average 82.8 81.1 82.6 76.5 78.6 77.6 83.1 Count (47) (106) (93) (44) (98) (211) (4) El20 116 Average 80.5 82.5 81.3 77.5 79.3 76.6 93.4 Count (115) (I10) (105) (91) (6) (71) (1) GENERAL AVIATION Class E Departure Noise Monitor Station dB SENEL Carrier # D~ps* RMS-1 RMS-2 RMS-3 RMS-21 R.MS-22 RMS-24 RMS-6 Private Jets 1656 Avtnag¢ 90.8 89.7 91.0 85.0 85.8 86.4 87_3 Count (1134) (1513) (1531) (350) (1183) (1435) (535) * # Deps equals the number of aircraft departure operation SENEL values measured at one or more departure noise monitor stations. Not every departure is measured at every monitor. RG:jw 2nd QUARTER 1998 - 12- 7/29/98 NOISE ABATEMENT COMMIYI'EE MEETING The John Wayne Airport Noise Abatement Committee did not meet during the calendar quarter between April 1, 1998 and June 30, 1998. RG:jw 2nd QUARTER 1998 9/18/9g -15- J.J. INC. John J. Van Houten, P.E. ?onsulting Engineer in Acoustics November 21, 1998 Project File 2779-98 3320 E. Chapman Ave. #323 Orange, CA 92869 949/476-0932 FAX 949/476-1023 CITY OF TUSTIN Community Development Department 300 Centennial Way Tustin, CA 92680 Attention: Ms. Elizabeth A. Binsack, Dir. of Comm. Development Subject: Review of John Wayne Airport Noise Abatement Program Quarterly Reports, 1st and 2nd Quarters 1998 References: 1. "Data Evaluation and Aircraft Noise Impact Study for the City of Tustin," J. J. Van Houten and Associates, Inc.,January 8, 1990 2. "Noise Abatement Program Quarterly Report for the Period: January 1, 1998 through March 31, 1998," John Wayne Airport 3. "Noise Abatement Program Quarterly Report for the Period: April 1, 1998 through, June 30, 1998" John Wayne Airport Dear Ms. Binsack, The referenced reports have been reviewed and evaluated as requested in your letter of September 29, 1998. The following provides our findings with regard to airport operations and their impact on the City of Tustin: . , Referring to Figures 1 and 2, the average annual CNEL at station M7 is 56.1 dB for the one year period ending, June 30, 1998. This estimate is based upon data for the full year. This is only 0.2 dB higher than the average annual CNEL of 55.9 dB for the year ending, December 31, 1997. (NOTE: The noise contours for John Wayne Airport are based on average annum CNEL values measured at each remote monitoring station.) Referring to Figure 2, the number of noise complaints originating from the Tustin/Orange area increased significantly in the first and second quarters of 1998. The average CNEL was about constant through June of CITY OF TUSTIN Project File 2779-98 . 1998. This increase in complaints was dramatic when compared to the third and fourth quarters of 1997. There were 58 complaints in the last two quarters of 1997, while there were 101 complaints in the first two quarters of 1998. The increase in complaints does correspond with the increase in total quarterly jet operations during the second quarter of 1998 as compared to the last quarter of 1997. As indicated in Item 1, above, the annual average CNEL measured at station M7 is 56.1 dB based on information through the first and second quarters of 1998. This is 1.8 dB less than the 58 dB that was estimated for the station in the referenced aircraft noise impact study for the Phase 2 Access Plan (Reference 1). AIRCRAFT NOISE CONTOURS In 1988, an exterior aircraft noise monitoring effort was conducted throughout the City of Tustin by the John Wayne Airport Noise Abatement Office and byJ. J. Van Houten & Associates, Inc. (Reference 1). Aircraft-generated single event noise exposure levels (SENEL's) were measured at twelve locations in Tustin over a five month period. As a result of this effort, noise contours were developed for John Wayne Airport as they impact the City of Tustin. Although the shape of the contours does not change (since flight tracks are fixed), the value of the noise contours does change with different levels of operations at the airport and different mixes of aircraft. Figure 3 provides the approximate location of the John Wayne Airport noise contours for 1990 based on measurements obtained at monitoring station M7 throughout the year. Referring to the figure, the community noise equivalent level (CNEL) ranged from 53 to 59 dB in the City of Tustin, with a CNEL of about 55 dB at station MT. Based on data through the second quarter of 1998, the annual average CNEL at station M7 is 56.1 dB. The existing and future Phase 2 contours (based on data through June of 1998) are provided in Figure 4. Referring to the figure, it is estimated that in the first half of 1998 the aircraft-generated CNEL ranges from 54 to 60 dB. This is well below the City, County, and State criteria of 65 dB for residential areas. USE OF QUIETER AIRCRAFT AT JWA The correlation between the increasing use of quieter aircraft at JWA and the change in CNEL within the City of Tustin has been examined as part of this program review. The Federal Aviation Administration (FAA) classifies aircraft into three categories based on noise levels. In order of decreasing noise levels, there are Stage I, Stage II, and Stage III aircraft. John Wayne Airport has only permitted Stage III aircraft since the early 1970's. The airport has its own classification scheme for passenger aircraft. In order of decreasing noise level, these are Class A, Class AA, and Class E aircraft. Table 1 provides the estimated number of each class of aircraft that used the airport between the first quarter of 1996 and through the second quarter of 1998. Also provided is the measured average quarterly CNEL at monitoring station MT. Table 2 provides the same information, but the values have been normalized to J. J. VAN HOUTEN & ASSOCIATES, INC. CITY OF TUSTIN Project File 2779-98 17,000 aircraft operations (takeoffs and landings) per quarter. In this way, a correlation can be established between the quarterly CNEL and the mix of aircraft types. Referring to Table 2 and Figure 5, the percentage of quieter Class E aircraft using John Wayne Airport has remained fairly consistent since the 4th quarter of 1996 (about :30% to 36%). The variations in aircraft mix do not correlate with changes in the average quarterly CNEL. That is, an increase in the use of quieter Class E aircraft does not mean that the average quarterly CNEL will decrease. For example, the percentage of Class E aircraft operations was 30.2% for the third quarter of 1997. However the average CNEL for the quarter was about the same as through the year (55.6 dB for the 3rd quarter vs. 56.1 for 1997). If you have any questions, please contact the undersigned at 949/4:76-0932. Very truly yours, j.j. yAN HOUTEN & ASSOCIATES, INC. //J6hn J. Van ,t~. ~en, .P.E. ~/Co~ni,~i.d,~_~:~ineer in Acoustics mjs:G:\lotus\work\wordpro\PROJECTSX2775-99\2779r2-1wp 3 J. J. VAN HOUTEN & ASSOCIATES, INC. z z 0 0 N n, 0 Z (BP) -13NO 7O .~- 60 z 50 -c: 40 ~ 30 * 20 . 10 0 ::::::::::::::::::::: ::::::::::::::::::::: I Average Quadedy Aircraft CNEL, M7 I 3Qrt96 4Qtr96 1Qtr97 2Qtr97 3Qtr97 4Qtr97 Quader/Year 1Qtr98 2Qtr98 25 2o -~ 15 ~ ~0 ITotal Quarterly Jet Operations, M7 I 3Qrt96 4Qtr96 1Qtr97 2Qtr97 3Qtr97 4Qtr97 1Qtr98 2Qtr98 Quarter/Year .c_ 100 ~- 9O E o 80 0 ~ 70 '5 60 Z ._~ 5O ~.... ~> 40 ~ 30 0 2O o> 10 ~ 0 I Average Quarterly Noise Complaints I 3Qrt96 4Qtr96 1Qtr97 2Qtr97 3Qtr97 4Qtr97 1Qtr98 2Qtr98 Quader/Year Figure 2. Average GNEL for the total Operations and Noise GompIaints for 1966 through the First Half of 1998, City of Tustin, Monitoring Station M7 M-? II · II II II II II 53 Figure :3. Approximate Location of the John Wayne Airport CNEL Contours, 1990 M / £ / // // // II II .11 II I/ I/ 60~ 59 58 57 ~ 'Z.--~-~ - ~55' 54. Figure 4. Approximate Location of John Wayne Airport GNEL Noise Contours for the Year EndlngJune 30, 1998 NUMBER OF AIRCRAFT OPERATIONS Thousands z