HomeMy WebLinkAboutOB 2 AIRPORT STAT RPT 10-07-91r 'ti A
OLD BUSINESS NO. 2
; 10-7-91
Inter - COM
:ATE: OCTOBER 71 1991
TO: WILLIAM A. HUSTON, CITY MANAGER
FROM: COMMUNITY DEVELOPMENT DEPARTMENT
S L BJ E CT: AIRPORT STATUS REPORT
RECOMMENDATION
1. Adopt Resolution No. 91-135 requesting that the Southern
California Regional Airport Authority (SCRAA) not accept the
Orange County Cities Airport Authority (OCCAA) as the Orange
County Representative on the SCRAA Board of Directors.
2. Receive and file status report.
DISCUSSION
The Community Development Department has continued to monitor
airport issues and attend all relevant meetings. Since the last
Airport Status Report to the City Council on August 5, 1991, staff
has:
* Attended a Congressional Subcommittee hearing on airport
noise;
* Expressed opposition to proposed revisions to an FAA
advisory circular;
* Attended meetings of the Orange County Cities Airport
Authority and the Noise Abatement Committee;
* Coordinated a review of CRAS activities by the City's
CRAS representative Kathy Weil;
*• Monitored Airport Land Use Commission Activities
* Reviewed the latest John Wayne Airport Noise Abatement
Quarterly Report by the City's noise consultants.
The following items summarize the most significant local airport
activities that have taken place during the past two months.
House Subcommittee Hearing on Transportation - On August 14, 1991,
Mayor Pro Tem Leslie -Anne Pontious and staff attended the second of
two congressional hearings held to obtain additional testimony on
the rules now being drafted to enforce the Airport Noise and
Capacity Act of 1990. Congresswoman Boxer and Congressman Cox
acted as representatives of the House Subcommittee and received
comments on the new rules from local elected officials, including
Mayor Pro Tem Leslie Anne Pontious, and community representatives.
In summary, most of the speakers providing testimony expressed
dissatisfaction with the Act's provision that the FAA now has
supreme authority over all airport expansion/noise and land use
City Council Report
Re: Airport Status Report
Page 2
October 71 1991
matters. The Act specifically removes the opportunity for citizen
input into the airport expansion environmental review process.
Apparently, this was done to facilitate airport expansion to
accommodate national transportation needs.
Advisory Circular Revision Affecting Noise Regulation - On August
29, 1991, the City sent a letter regarding an FAA proposed terme Advisory
Circular to John Wayne Airport Director Janice M
The
purpose of the letter was to express the City's opposition to the
Federal Aviation Administration's proposed revisions affecting
commercial carrier take -off procedures, to request any further
information on the issue and to pledge the City's support of all
efforts to prevent the usurpation of local community input and
authority over airport noise matters. Adoption of the circular as
proposed could jeopardize John Wayne Airport's grandfathered status
resulting in further FAA control over future expansion activities
at the airport.
The Orange County Cities Airport Authority (OCCAA)- - Staff attended
the August 21, 1991 and September 18, 1991 meetings of e the OCCAA.
ussion
The August meeting was exceptionally brief, and th
lacked a sense of direction. However, the September meeting was
more substantive. For example, the OCCAA Board discussed the
potential conversion of MCAS -Tustin to a commercial airport, but
agreed that the site is a poor choice because it lacks a the flight f f eof
runway, is too small, and is located close to g Path
John Wayne Airport. The Board also agreed to offer OCCAA
membership to all non -participating cities in the
County. Finally,
the conversion of MCAS -El Toro, was discussed. The Board wondered
why Tustin and Irvine are not supporting the concept, because they
feel a new airport there would provide an alternative to using JWA
and also greatly benefit the region economically.
Noise Abatement Committee - Staff attended the quarterly the issues
Abatement Forum meeting on August 28, 1991. While
discussed at the meeting did not directly concern the City of
Tustin, the issue of noise complaint form pro c s i g is noteworthy. that oly
The Newport Beach Aviation Committee has suggested
multiple complaints and those complaints which report exceptionally
noisy flights should be forwarded to carriers because the current
paper load has become overwhelming.
Coalition for Responsible Airport Solution (CRAS) WeillKathy
our City representative for CRAS, has prepared the attached report
on the most recent developments for CRAS. Resolution 91-135 has
been prepared for Council consideration at her request.
Airport Land Use Commission ALUC - On April 29, 1991, the City of
Tustin received a copy of the amended Airport Environs Land Use
Plan (AELUP) . Staf f has reviewed the document to identify Tustin' s
City Council Report
Re: Airport Status Report
Page 3
October 7, 1991
concerns and has prepared an analysis which responds to a County -
prepared consistency review worksheet to determine whether Tustin
is in fact inconsistent with the AELUP. If, after consultation
with the County, changes to the General Plan are definitely needed,
staff will work with the General Plan consultants to ensure that
Tustin is made a consistent agency.
Airport Noise Report - In August, 1991, J.J. Van Houten and
Associates, Inc., Tustin's noise consultants, prepared a review of
County -prepared John Wayne Airport Noise Abatement Program
quarterly report for the 1st quarter of 1991. A copy of their
report is attached.
From 1990 through the first quarter of 1991 there has been a 2 dB
increase in aircraft -generated Community Noise Equivalent Level
(CNEL) at monitoring station M7 (On October 1, 1990, remote
monitoring station M5 in Tustin was renumbered as M7). During the
last two quarters of 1990 and the first quarter of 1991, the
average number of commercial jet operations has increased, the
average quarterly CNEL values measured at station M7 have increased
slightly, but the number of quarterly noise complaints for
Tustin/Orange increased and then decreased dramatically. Again,
this strongly implies that people react to Single Event Noise
Equivalency Levels (SENEL) rather than long-term noise exposure
(CNEL). As indicated in the June 3, 1991 Airport Status Report, it
is estimated that increased flight operations, as approved by the
Board of Supervisors under the Phase II Access Plan, will further
increase noise levels by 2 dB throughout the city raising future
CNEL levels in the city to between 53 and 60 dB. However, this is
below the City, County, and State criteria of 65 dB for residential
areas.
CONCLUSION
Because the issues discussed above are of considerable importance
to the City of Tustin, the Community Development Department will
continue to' monitor airport issues unless otherwise directed by
Council. Staff recommends that Council adopt Resolution 91-135
requesting that the SCRAA not accept the OCCAA as the Orange County
Representative on the SCRAA Board of Directors.
U&
Scott Reekstin Christine Shinglq6bn
Assistant Planner Assistant City Manager
Attachments: Resolution No. 91-135
Report from Kathy Weil
Report from J.J. Van Houten and Associates
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RESOLUTIOIN NO. 91-135
A RESOLUTION OF THE CITY COUNCIL OF THE CITY
OF TUSTIN, CALIFORNIA, REQUESTING THAT THE
SOUTHERN CALIFORNIA REGIONAL AIRPORT
AUTHORITY (SCRAA) NOT ACCEPT THE ORANGE
COUNTY CITIES AIRPORT AUTHORITY (OCCAA) AS
THE ORANGE COUNTY REPRESENTATIVE ON THE
SCRAA BOARD OF DIRECTORS
WHEREAS, on August 14, 1991, at a regular meeting of SCRAA,
OCCAA requested membership on the SCRAA Board of Directors as
the Orange County representative; and
WHEREAS, SCRAA's Board of Directors continued the item to
their next regular meeting scheduled for October 23, 1991; and
WHEREAS, the City Council of the City of Tustin is very
concerned that OCCAA's representation of Orange County airport
issues is inadequate and inappropriate; considering OCCAA's
membership includes only six of the total 31 Orange County
cities ( (31) counting Laguna Hills and Lake Forest which will be
incorporated in December, 1991], of which Anaheim, Garden Grove,
Newport Beach, Stanton and Yorba Linda are active members on
OCCAA's Governing Board, and the City of Santa Ana is presently
an inactive member; and
WHEREAS, OCCAA has been the principal proponent for the
conversion of U.S. Marine Corps Air Station (MCAS) -El Toro, an
approximately 4,700 acre military facility located at the center
of the County, to either a full commercial use airport or joint
commercial and military use airport; and
WHEREAS, a new airport facility at MCAS -El Toro would have
County -wide impacts which should be addressed from an objective
perspective by a more representative Orange County based group.
NOW THEREFORE BE IT RESOLVED, that the City Council of the
City of Tustin, California, does hereby respectfully request
that the Southern California Regional Airport Authority (SCRAA)
deny OCCAA's request for membership at their next scheduled
meeting of October 23, 1991.
PASSED and ADOPTED at a regular meeting of the Tustin City
Council, held on the 7th day of October, 1991.
MARY E. WYNN
City Clerk
CHARLES E. PUCKETT
Mayor
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Resolution No. 91-135
Page 2
STATE OF CALIFORNIA )
COUNTY OF ORANGE ) SS
CITY OF TUSTIN )
CERTIFICATION FOR RESOLUTION NO. 91-135
MARY E. WYNN, City Clerk and ex -officio Clerk of the City
Council of the City of Tustin, California, does hereby certify
that the whole number of the members of the City Council of the
City of Tustin is five; that the above and foregoing Resolution
No. 91-135 was duly and regularly introduced and read at a
regular meeting of the City Council held on the 7th day of
October, 1991, by the following vote:
COUNCILMEMBER AYES:
COUNCILMEMBER NOES:
COUNCILMEMBER ABSTAINED:
COUNCILMEMBER ABSENT:
Mary E. Wynn, City Clerk
Published:
Tustin News
DO:kd\91-135.res
MEMO:
TO: TUSTIN CITY COUNCIL
FROM: KATHY WEIL
RE: CRAS - RECENT DEVELOPMENTS
REQUEST FOR EMERGENCY RESOLUTION
CRAS recently hired a consultant, Bill Meachan. Some of you may know Bill from his days on the San
Clemente City Council. His job with CRAS is basically to weaken the strength of OCCAA. One of the ways
he's doing this is by undermining their efforts to establish themselves as THE airport representative for
Orange County. OCCAA is currently soliciting, from the Southern California Regional Airport Authority
(SCRAA), an appointment to that body as the "Orange County rep to SCRAA". Several cities have passed a
resolution requesting SCRAA not appoint OCCAA. I've enclosed a copy of Irvine's reso for your reference.
CRAS would like Tustin to do the same, possibly an emergency resolution to be used at the October 23
meeting of SCRAA, please. Apparently Orange County is also fighting this appointment, but OCCAA has a
strong supporter on SCRAA in the body of Henry Weeda, Yorba Linda, who is also on the OCCAA board.
I've also enclosed a letter from Bob Hammond to Gaddi Vasquez concerning this.
Bill Meacham is also helping CRAS decide what to do on another, though related, matter. If the County won't
set up its own Airport Authority or at least be the rep to SCRAA, we need a viable alternative to OCCAA.
CRAS is currently investigating the viability of becoming a Joint Powers authority to take over the job of
representing Orange County (instead of OCCAA). Considering the location of our member cities, we feel that
we would be a much better representation of the area as a whole. Please, I need your input on this. If this
ever gets out of the planning stage CRAS will obviously need the approval of its member cities to proceed any
further.
That's pretty much a thumbnail sketch of recent happenings. I'll keep you informed on a monthly basis now
that things are beginning to heat up again.
WCM & ASSOCIATES
2130 Via Aguila (714) 361-3585
San Clemente, CA 92672 (714) 361-3656 FAX
TO: Bob Simpson, Councilman
Anaheim City Council
FROM: Bill Mecham, Consultant
Coalition for Responsible Airport Siting
DATE: September 10, 1991
SUBJECT: Position Paper on OCCAA
As I indicated this morning the Coalition for Responsible Airport
Siting (ORAS) is very concerned about the -direction being taken by
the Orange County Cities Airport Authority (OCCAA). The Board of
Directors of OCCAA have for the past year worked to try to
establish Marine Corps Air Station - E1 Toro as an alternative to,
or substitute for, John Wayne Airport. They have held hearings
about the proposed'sites at Cristianitos and George AFB. However,
they have made no bones about the fact that their real target was
E1 Toro. Two recent actions have now raised the ante. The
production of the "slick" brochure I showed you this morning truly
highlights their true aim. Secondly, they have applied to become
the Orange County representative on the Southern California
Regional Airport Authority (SCRAA).
SCRAA is another joint powers authority but with a great deal more
political clout. Their Board of Directors include Supervisor Dean
Dana, Supervisor Bob Hammock, Supervisor Norton Younglove, Los
Angeles Councilwoman Joan Milke Flores and the executive director
of LAX. This board truly wants some representation from Orange
County to solidify their legitimacy. So far Orange County's
Supervisors have opted not to join SCRAA.
As we discussed OCCAA has three strengths: Newport Beach's money,
Hank Wedaa's political clout and Anaheim's population and status.
When presentations are made it is consistently Wedaa and Pickler
who speak. Ken Delino speaks also but rarely is he identified as
an assistant City Manager for Newport Beach. Newport, the true
proponent, is not directly identified.
CRAS believes the following:
OCCAA is a single issue organization whose goal is to
decrease the airport impact on Newport Beach and shift
that burden to some other community.
Page 2 Position Paper September 10, 1991
* Newport is taking full advantage of Anaheim's presence in
the organization and the credibility it brings.
OCCAA should not be selected to represent Orange County by
SCPJ A or any other body.
* The actions of OCCAA are inimical to the ongoing good
relations between Orange County cities and represent
another point of aggravation between your city and the
County Board of Supervisors.
ORAS therefore asks for your assistance in the following ways:
- Help to remove Anaheim from membership in OCCAA.
- Assist ORAS and other entities in searching for viable
transportation solutions which don't just shift the burden
to another city or community in the county.
if you have any other questions about the issues I've outlined
above please don't hesitate to call me at (714) 361-3585.
FROM:T. RILEY SUPU. 5th T0: 7143613656 SEP 25+ 1991 8:04AM P,01
SOUTHERN CALIFORNIA REGIONAL AIRPORT J#THO TK
1 World Way, P.O. Box 92216. Los Angeles, California 9W.
2216
... ....
Telephone 213 046-6250 Iolex 653413
Board of blroctots
Robert L. Hammock, Cha;rosrsan
Suporview County of San bernardirto
Joan Milk* Flores, Vlco•Chaigmrswt
Los Angeles City Council
Doane Dana, Membor
Supervisor County of Los Angelos
Nonon Younglove, Member
Supervisor County of Riverside
Henry W. Wedea, SCAO Reptosentative
Councliman City Yorba Linda
Clifton A. Moore, Clriel Executive
Officor and Secretary
September 10, 1991
Honorable Gaddi Vasquez
Chairperson, Board of Supervisors
County of Orange
Hall of Administration
10 Civic Center
Santa Ana, CA 92701
Dear Superv' Vasquez:
691 SEP 13 A 8 :55
RECEIVED
THOMAS F. RILEY
to 18 1991
TFR..._._
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FILE.
The demand for air travel in Southern California continues to
increase at a pace which existing`facilities-will not be able to
handle'to regional demand in the 21st Century. New facilities
must"be provided to meet these demands.
The Southern California Regional Airport Authority continues to
be the most viable organization to address these.vital issues.
The fact that your own board determined the George Air Force
Base in San Bernardino County was -the only viable solution to
citing a new airport to meet the demand for air travel in Orange
County once again reinforces that this is an issue which must be
addressed at the regional level.
Representation in the Authority from Orange County, whether it
be your Board or some other qualified agency, is critically
needed to seriously address the projected regional shortfall for
future air travel in Southern California. Active participation
from every county in the region is imperative in order to
conduct meaningful discussions on measures to accommodate future
aviation growth. Accordingly, the Board of Directors of the
Southern California Regional Airport Authority once again
extends an invitation for Orange County to become an active
member of the Authority.
Honorable Gaddi Vasquez
-- September 10, 1991
Page 2
The Board of Directors will consider the issue of orange County
representation on the Authority at its ineeting of Wednesday,
October 23, 1991. Our preference would be the Board of
Supervisors. However, should you decline, other alternatives
will be considered.
Considerable interest has been shown in the Authority by the
Orange County Cities Airport Authority. Their membership
request would be considered in lieu of the participation of your
board.
The Board of Directors of the Southern California Regional
Airport Authority sincerely hopes that you will affirmatively
consider the invitation to become a member of the Authority and
looks forward to your participation in addressing the future air
transportation needs of Southern California.
Sincerely,
Robert L. Hammock
Chairperson
RLM:DLG:aa
r.nalitinn for a
September 24, 1991
TO: All Boards, Clubs and Individuals in Leisure World
FROM: Doyle W. Selden, Chairman, GRF Airport
Committee, ORAS Board Member kAtL
Re: Threat of Commercial Aircraft Use of Marine Corps Air Station, El Toro
We want to alert you to a danger to our life style being mounted at present by a
group of 6 cities in Orange County. These cities are Newport Beach, Stanton,
Anaheim, Garden Grove, Yorba Linda, and Santa Ana (now inactive). Thse cities have
titled themselves the "Orange County Cities Airport Authority" OCCAA even through
they include only 6 of our county's 31 cities.
On August 14, 1991, this OCCAA made a request to the Southern California Regional
Airport Authority (SCRAM meeting in Ontario that their group be made the Orange
County respresentative on their board. This SCRAA includes official representatives
from Riverside, San Bernardino and Los Angeles Counties and Los Angeles City. It is
a Joint Powers Authority. Orange County at present is not a nember.
Because of opposition raised at this August meeting, the Southern California
Regional Airport Authority delayed its decision on accepting OCCAA onto its board
until its next meeting on October 23. It is very important that letters to the
SCRAA and to our Orange County Board of Supervisors be sent before October 15 to
counter the claim that this 6 -city group represents most of Orange County in its
airport decisions.
The reason for opposition to the OCCAA group is that this group has prepared a very
slick large brochure advocating cormercial use of the Marine Corps Air Station at
E1 Toro. A drawing shows a remodeled air station, railroad lines, the Irvine
Spectrum, and empty hills surrounding the area. Their brochure states "Almost
unbelievably, thousands of acres of noise buffer zones protect flight corridors from
sensitive residential development. El Toro can quickly and inexpensively relieve a
desparate air travel shortfall with complete environmental sensitivity."
"Unbelievable" is right. They project complete use of Runway 07 only. We who lived
here during the August 1990 mobiliziation know differently. Commercial planes had
to use Runway 16 South, which goes directly over us and other heavily populated
residential areas. Thousands and thousands of homes would fall within the 65 CNEG
restricted zones.
For this reason, we are asking club and individuals within Leisure world to write a
letter similar to the attached and send it to our Coalition. We will make copies
for our Board of Supervisors and for the Southern California Regional Airport
Authority before its October 23 meeting. We need the help of citizens and voters.
We are not asking for a contribution to CRAS at this time, but it would be
appreciated as we are preparing aerial photographs and other documents to help in
opposing this threat to us. We would like to kill the idea of a commercial airfield
_ at El Toro completely.
n 1.1D(#49)
A Group Opposed to Joint or Commercial Use of MCAS -El Toro
23704-5 EI Toro Road, Suite 411, E1 Toro, California 92630
AS/The Irvine World News/September 12, 1991
Group'
P'ushes E1,T6ro airport plan
By CHARLES H. Loos
STA" MUTER
The battle for control of the skies over Irvine has
resumed with a group of cities led by Newport Beach
renewing the call for future civilian use of El Toro
Marine Corps Air Station.
Several hundred copies of a brochure depicting El
Toro MCAS as a commercial airport were sent recent-.
ly to city council members in Orange County and oth-
er government leaders by the Orange County Cities
Airport Authority.
The appearance of the brochure annoyed Irvine
Mayor Sally Anne Sheridan, who said she wasn't sur-
prised, but found the idea of spending several thou-
sand dollars on materials to promote a commercial
airport at the Marine base "outrageous."
"It's Ken Delino's job to keep this thing alive," said
Sheridan.
Delino is a deputy Newport Beach city manager.
He also is executive director of the Orange County
Cities Airport Authority, a post he describes as "one
of my corollary duties."
Newport;
Beach is once
again calling for
future civilian
use of El Zbro
Marine Corps
Air Station. .
Cities named `
He said the authority's members include the cities
of Anaheim, Santa Ana, Garden Grove, Stanton,
Newport Beach and Yorba Linda and that about
$4,000 was spent on the brochure.
Irvine Mayor Pro Tem Art Bloomer, a former com-
manding general of the air base and chairman of the
Coalition for Responsible Airport Solutions, said
Irvine is moving ahead with its effort to annex the
45,000 -acre Marine facility.
Irvine's Sheridan said her city and Tustin `are
rather annoyed that Newport Beach continues to do
this, especially since we were magnanimous enough
to support their effort to get local jurisdiction over
their air space."
Newport Beach has been battling for years to limit
commercial flights from the county's John Wayne
Airport because of noise, air pollution and safety con-
sideration. The airport's main takeoff pattern is over
the beach city.
Delino said the purpose of the brochure is to
explain the potential of the Marine base for commer-
cial use and to help persuade the Southern California
Regional Airport Authority to keep it in mind as a
possible second commercial airport in Orange Coun-
ty.
Seeking more clout
Delino also acid the Orange County cities group is
seeking membership in the Southern California Air-
port Authority, which currently includes the City and
County of Los Angeles and Riverside and San
Bernardino counties. The County of Orange has been
asked to join, but has yet to do so, he said.
Irvine's Sheridan and Bloomer said it already has
been shown that it isn't feasible, politically or techni-
cally, to put a commercial airport at El Toro MCAS.
Bloomer added that, in his opinion, the Marines don't
plan to abandon the base anyway.
.. However, Delino argued that "most knowledgeable
observers believe" the Marines will have to leave the
base sometime within the next 10-20 years. "What
happen when they do leave?" he asked.
And he said Irvine's bid to annex the Marine base
is "an attempt to eliminate any civilian use alterna-
tives. They want to control the base when the
Marines leave."
Bloomer said he understands that talks at the staff
level about the annexation are to begin soon. He said
the Irvine Co., which owns most of the land around
the Marine base, already has agreed not to oppose
the annexation so long as it doesn't involve Irvine Co.
property.
`Alternatives needed'
. The Irvine city councilman also said that the con-
tinuing infighting over what to do about air trans-
portation when John Wayne Airport reaches capacity
points up the need to develop alternate transporta-
tion solution.
Some people believe the only viable solution for
Orange County, he said, is to build a high-speed train
connection to an airport such as the old George Air
Force Base near Victorville.
Last year, the Orange County Board of Supervisors
suggested just that, shelving efforts to find a second
commercial airport site within the county.
A desert site such as George AFB would be suffi-
ciently removed from heavy population concentra-
tions that political arguments over where to put a
new commercial airport could be overcome, Bloomer
observed.
J.J. VAN HOUTEN & ASSOCIATES, Inc.
JOHN J. VAN HOUTEN, PE, Principal Consultant
DAVID L WIELANA Principal Engineer
ROBERT WOO, Senior Engineer
STUART TAY, Associate Engineer
1260 EAST KATELLA AVENUE, ANAHEIM, CALIFORNIA 92805
(714) 978-7018 (714) 635-9520 FAX (714) 939-0648
_ RECEIVED -a
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I
n n i'� l
August V I z J �``j Project File 2306-91
� 20, 1991 A
COMMUNITY DEAEOPMENT
CITY OF TUSTIN
Community Development Department
15222 Del Amo Avenue
Tustin, CA 92680
Attention: Ms. Rita Westfield
Subject: Review of John Wayne Airport Noise Abatement Program Quarterly
Report, 1st Quarter 1991
Reference: 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, 1991 through March 31, 1991," John Wayne Airport
Dear Ms. Westfield:
As requested, we have reviewed the referenced quarterly report for the noise abatement
program at John Wayne Airport. The following provides our findings with regard to
airport operations and their impact on the City of Tustin:
1. Referring to Figures 1 and 2, the general trend from 1990 through the first
quarter of 1991 was an increase in aircraft -generated CNEL at remote monitoring
station M7. Based upon data for the 1st quarter, the average annual CNEL at
station M7 is 57 dB for 1991. This is a 2 dB increase over the average annual
CNEL of 55 dB for 1990. (NOTE: The noise contours for John Wayne Airport
are based on average annual CNEL values measured at each remote monitoring
station.)
2. Referring to Figure 2, there does not appear to be any correlation between the
average number of noise complaints received from the Tustin/Orange area and
the average quarterly aircraft CNEL or the average quarterly number of jet
operations. In fact, the number of complaints decreased dramatically in the first
quarter of 1991 despite the fact that both the average monthly CNEL and the
number of flights have increased. This strongly implies that people are reacting to
the single event noise levels rather than the long-term noise exposure (CNEL).
This is consistent with the findings of the referenced aircraft noise impact study
(Reference 1).
3. As indicated in Item 1, above, the annual average CNEL measured at station M7
is 57 dB based on information for the first quarter of 1991. This is slightly 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 by J. J. Van Houten and
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 M7.
Based on data through the first quarter, the annual average CNEL at station M7 will be
57 dB in 1991. The existing and future Phase 2 contours (based on 1991 data) are
provided in Figure 4. Referring to the figure, it is estimated that in 1991 the aircraft -
generated CNEL will range from 55 to 61 dB. This is well below the City, County, and
State criteria of 65 dB for residential areas.
2
J. J. VAN HOUTEN & ASSOCIATES, Inc.
CM OF TUSITN
PROJECT FILE 23306-91
If you have any questions, please contact the undersigned at 714/978-7018.
Very truly yours,
J. J. VAN HOUTEN & ASSOCIATES, INC.
ohn J. V Houten, P.E.
Consultin Engineer in Acoustics
JJVH/DLW/rrp
3
J. J. VAN HOUTEN & ASSOCIATES, Inc.
CITY OF TUSI'IN
PROJECr FILE 2306-91
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Average Quarterly Aircraft CNEI, M7
1 Qtr90 2Qtr90 3Qtr90 4Qtr90 1 Qtr91 20tr91 30tr91 40tr91
Quarter/Year
Average Quarterly Jet Operations, M7
1 Qtr90 20tr90 3Qtr90 40tr90 1 Qtr91 2Qtr91 3Qtr91 40tr91
Quarter/Year
Average Quarterly Noise Carplaints
1 Qtr90 2Qtr90 3Qtr90 4Qtr90 1 Qtr91 2Qtr91 3Qtr91 4Qtr91
Quarter/Year
Figure 2.
5s
Figure 3. Approximate Location of John Wayne Airport
Noise Contours, 1990
55
Figure 4. Approximate Location of John Wayne Airport
Noise Contours, 1991