HomeMy Public PortalAbout2009 Taxiway Relocaton CorrespondenceVHPaullc
9755 SW Barnes Rd, Ste 300
Portland, OR 97225
503.626.0455 Fax: 503.526.0775
MEMORANDUM
Date: 5/28/2009 RE: McCall Airport - EA Alternatives
To: City Council Members
Company: City of McCall
Phone: 208-634-7142
Fax: 208-634-3038
Address 216 East Park Street
McCall, ID 83638
Members of the McCall City Council:
From: Rainse E. Anderson, P.E.
Title: project Manager
Phone: 503-372-3521
Fax: 503-526-0775
Project#: 034256
Project Name: McCall Airport EA
In preparation of the upcoming meeting on June 5th to discuss the Taxiway Relocation
Environmental Assessment (EA) at the McCall Municipal Airport, I would like to give you a brief
overview of the project.
The EA is a federally -defined process, undertaken by the City of McCall and the Federal Aviation
Administration. The EA examines the No Action and Preferred Alternative through an analysis
of the existing conditions, consequences of the alternatives, and cumulative impacts. If
necessary, mitigation would be identified for any resources negatively impacted. Through the
process a Draft EA will be distributed for public review, a Final EA will be submitted to the FAA,
the FAA will issue their finding, and wetland permits will be acquired.
Enclosed are copies of the final Purpose and Need statement, along with the Alternatives
chapter of the Draft EA. The documents present an overview of the project and the alternatives
being considered. Supporting documents, such as the engineer's design report and field
reports, are posted to our FTP site at
ftp://ftp-guest:mogollon@ftp.whpacific.com/Outg_ojng/McCall.
As part of the EA, an Airport Environmental Assessment Committee (AEAC) has been formed
that consists of members of the community. At the last AEAC meeting, on March 10th, the
proposed alternatives were presented with the intent of identifying a preferred alternative.
However, no consensus was reached to select a preferred alternative. It was decided that
WHPacific would draft a summary of the discussion and present it to the McCall City Council. An
informal vote was taken to get a feeling for the committee's recommendation for the preferred
alternative. There were five votes for Alternative 2 and six votes for Alternative 4. Bert
Kulesza abstained from voting. The summary for this meeting is also enclosed for your
consideration.
At the upcoming meeting, we will be asking the City Council to recommend a preferred
alternative. A brief summary of the alternatives will be presented, followed by a Q&A session.
Representatives from the FAA will also be present to answer your questions.
I look forward to meeting with all of you on June 5th. If you have any questions prior to the
meeting, please feel free to call or email me.
Regards,
WHPacific, Inc.
Rainse E. Anderson, P.E.
rnderson@whpacific.com
Enc. Project Purpose and Need
Alternatives Chapter
March 10, 2009 AEAC Meeting Summary
Introduction
The McCall Municipal Airport (Airport) is owned and operated by the City of McCall (City).
The Airport encompasses approximately 200 acres and consists of a single runway (6,107' x
75'), one full parallel taxiway, and one partial parallel taxiway that serves the United States
Forest Service (USFS). The Airport has been designated as a general aviation facility by the
Federal Aviation Administration (FAA) and accommodates private flying, business aviation,
charter service, remote access, and the USFS. The typical fleet using the Airport range from
Aircraft Design Group I through III, which is a range of aircraft from small single engine
airplanes to medium-sized jets. Operations of larger aircraft do occur, but those operations are
rare and not considered a typical operation. There are no commercial service operations at the
Airport.
An update to the Airport's Master Plan in 2007 identified deficiencies in regards to FAA design
standards. Primary amongst the deficiencies was the runway/taxiway centerline separation.
Although the Master Plan did not identify runway length as a deficiency for the current B -II
standard, additional runway length was identified as a deficiency if the Airport changes to a C -II
classification. Due constraints on the north end of the runway, any extension would need to be
to the south. Presently, additional runway length is not justified by the aircraft operating at the
airport. In addition, under current airport design standards and environmental regulations,
additional runway length may not be feasible due to wetlands and topographic features that limit
the approaches to a longer runway.
Purpose and Need
The City of McCall and the McCall Municipal Airport need to comply with FAA design
standards because they are a recipient of Federal funding. The purpose of the proposed project is
to bring the runway/taxiway centerline separation at the Airport into compliance with FAA
design standards. The existing runway/taxiway centerline separation is 200 feet. The present
separation of 200 feet is based upon an older standard prescribed in Advisory Circular (AC)
150/5300-4B, Utility Airports (1983-1989), which applied when the runway and taxiway was
built. The separation standard for the Airport is 240 feet, per (AC) 150-5300-13, Airport Design,
the current FAA design standards document.
FAA design standards guide the widths, minimum clearances and other dimensional criteria for
runways, taxiways, safety areas, aprons, and other physical features. The Airport Reference
Code (ARC) is a coding system used to relate and compare airport design criteria to the
operational and physical characteristics of the aircraft intended to operate at the Airport. The
ARC is comprised of two components.
The first component, depicted by letter (e.g., A, B, C, D or E) is the aircraft approach category
and relates to aircraft approach speed based upon operational characteristics. An aircraft fits into
a category based on 1.3 times the stall speed of that aircraft at maximum gross weight in the
landing configuration. Speeds and examples of the aircraft approach category are A: less than 91
knots (Beech Bonanza); B: between 91 knots and less than 121 knots (Dassault Falcon 900); C:
between 121 knots and less than 141 knots (Gulfstream III); D and E represent even faster
aircraft.
The second component of the ARC is the aircraft design group. The aircraft design group is
based on an aircraft's physical characteristics (wingspan or tail height, which ever is most
demanding) and is depicted by a Roman numeral (e.g. I, II, III, IV, V or VI). The below table
defines each group:
Aircraft Design Group
I
II
III
IV*
V*
VI*
Tail Height (ft)
<20
20 - <30
30-<45
45 - <60
60 - <66
66 - <80
* Operations not typical at the Airport.
Wingspan (ft)
<49
49-<79
79 - <118
118 - <171
171 - <214
214 - <262
Example
Beech Baron
Cessna Citation II
Gulfstream V
Boeing 757
Boeing 747
Airbus 380
Generally speaking, aircraft approach speed applies to runways and runway -related facilities,
while aircraft wingspan/tail height is primarily related to separation criteria associated with
taxiways and taxilanes.
In 2007, the City of McCall, with assistance from the FAA, prepared an Airport Master Plan.
The Plan included an inventory of airport facilities, forecasts for future airport demand, and a
comparison of facilities to FAA design standards. Based upon this Master Plan, the appropriate
ARC for McCall is B -II. As previously indicated, the runway/taxiway centerline separation
requirement for the Airport (ARC B -II) is 240 feet.
In summary, the purpose of the project is to increase runway/taxiway centerline separation from
the currently deficient 200 feet to a minimum of 240 feet. The project is needed to bring the
Airport into compliance with the minimum FAA standards.
In addition to the runway/taxiway centerline separation deficiency, the City is proposing to
purchase land adjacent to the Airport's eastern boundary. Since the late 1980s, the McCall
Municipal Airport Layout Plan (ALP) has shown land acquisition of approximately 64 acres
south of the airport's eastern property boundary to just beyond the Automated Surface
Observation System (ASOS). There are four primary reasons why this land has a high priority
for acquisition.
1. Additional land is required for taxiway construction to comply with FAA
runway/taxiway centerline separation standards.
2. The ASOS for weather observing and reporting is located on private land, with the land
lease expiring July 13, 2009. The proposed additional property would encompass the
current ASOS location and the critical area (500' radius) required for its proper operation.
3. The Airport Master Plan Update of 2007 documents a need for an additional 135 hangars
through the 2025 planning period. Approximately 20 of the hangars needed by 2015 can
be accommodated on existing airport property. By 2015, it is estimated that 72 additional
hangars will be in demand. Therefore, in the foreseeable (3-5 year) planning period,
there will be a deficit of 52 spaces upon which to develop new hangars.
4. The land that needs to be acquired is divided into four 20 -acre parcels running from
parallel taxiway "A" to their easterly property boundary. It is undesirable to purchase the
property through a series of piecemeal purchases. Doing so would create uneconomic
remnants after the land for the taxiway relocation and the ASOS are purchased. By
purchasing the property in one acquisition, the City will be able to avoid costly
acquisition fees (i.e., appraisal and negotiation). Additionally, purchasing all of the
property now would protect the Airport from encroachment by incompatible land uses,
while preserving it for aeronautical uses.
The existing ALP for the Airport depicts land and aviation land uses for this land totaling
approximately 64 acres, which have been previously disclosed via the Airport Master Plan
Update process. An additional 12 acres is also needed to protect the ASOS from incompatible
uses.
This Environmental Assessment (EA) will consider impacts associated with correcting the
runway/taxiway centerline deficiency. The EA will not address any environmental impacts of
the property acquisition outside of the taxiway relocation project area of potential effect. All
future development on the area of the proposed acquisition outside of the taxiway relocation area
of potential effect will be subject to individual National Environmental Policy Act (NEPA)
review. The appropriate NEPA review will be determined on a case-by-case basis. The
proposed property acquisition is included in this EA solely for the purpose of public disclosure.
The EA will evaluate the cumulative impacts of potential development on the acquired property
as a reasonably foreseeable action.
Proposed Action
While the current aircraft operations at the Airport comprise an ARC B -II, operations by larger
aircraft such as the Gulfstream II, III and IV, and Learjet 35 and 45 series do occur at the
Airport. The 2017 forecast in the Master Plan projects the Airport' s ARC to change from B -II to
C -II. The standard runway/taxiway separation for C -II is 300 feet, while C -III is 400 feet.
Accordingly, the City of McCall proposes to increase the runway/taxiway separation to meet
FAA standards and the future needs of the Airport. The FAA will evaluate at a minimum a
runway/taxiway separation of 240 feet for the environmental impact. The McCall City Council
will make a recommendation on the recommended alternative on June 5, 2009.
Federal Action Requested
The Federal Action requested is funding for construction of the proposed taxiway relocation.
Timing of the Federal Action
Construction is anticipated to occur during summer of 2010.
1. ALTERNATIVES INCLUDING THE PROPOSED ACTION
The alternatives considered are generally derived from the analysis completed for the
Airport Master Plan (2007, Sept). Figure 1 is the Federal Aviation Administration
(FAA) approved Airport Layout Plan (ALP) that was generated through the master
planning process. The following section summarizes alternatives examined and the
reasons for keeping or dismissing them.
As required by the National Environmental Policy Act (NEPA), the analysis of the No
Action alternative is considered to provide a basis for comparison of a reasonable range
of alternatives. Therefore, the No Action alternative will be discussed throughout this
Environmental Assessment (EA).
1.1. Elements to be Analyzed
Runway/Taxiway Centerline Separation. The runway/taxiway centerline separation
deficiency was identified in the Master Plan. Runway/taxiway centerline separation
standards are determined by FAA design standards set forth in Advisory Circular
150/5300-13, Airport Design, which is based on the types of aircraft using a particular
runway, as previously mentioned in Section II, Purpose and Need for the Action.
The existing 50 feet wide parallel taxiway centerline is 200 feet from the runway
centerline, 40 feet short of the required separation based on the existing Airport
Reference Code (ARC) designation of B -II. The Airport layout Plan (ALP) indicates a
future ARC for the airport of C -II, which requires a centerline separation of 300 feet.
However, the ALP recommends using a 400 feet centerline separation, as required for
Design Group III.
The current ALP recommends a future airport design group of C -II. The critical
limitation for the airport meeting C -II design standards is the length of the runway. The
current runway length of 6,106 feet is adequate for B -II aircraft. Chapter 5 of the Master
Plan cites a runway length of 8,606 for the C -II fleet. In addition, the FAA -required
approach clearances would need to be met. Development and topographic constraints
place significant limitations on the airport achieving this. As such, a runway extension is
not discussed or proposed in this EA.
The three taxiway relocation design alternatives being considered include relocating the
east parallel taxiway to provide centerline separations from the runway of 240 feet, 300
feet, and 400 feet. The No Action alternative will be evaluated with the design
alternatives. The four alternatives are outlined as follows:
'vlcCall Airport Environmental Assessment
Chapter I: Alternatives (DRAFT)
WHPacific. Inc.
Page I
" A l t e r n a t i v e 1 : N o A c t i o n
" A l t e r n a t i v e 2 : R e l o c a t e t h e P a r a l l e l T a x i w a y t o m e e t B - I I D e s i g n S t a n d a r d s ( 2 4 0
f e e t s e p a r a t i o n )
" A l t e r n a t i v e 3 : R e l o c a t e t h e P a r a l l e l T a x i w a y t o 3 0 0 f e e t s e p a r a t i o n
" A l t e r n a t i v e 4 : R e l o c a t e t h e P a r a l l e l T a x i w a y t o 4 0 0 f e e t s e p a r a t i o n
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