public workshop federal aviation administrationgnossfieldeis-eir.com/pdf/faa marin county may...

Federal AviationAdministrationPublic Workshop

Extend Runway 13/31Gnoss Field Airport

Update Status of Environmental Impact Statement

And

Provide Information on Data Collection Methodology to Identify Aviation Activity forUpdate to Purpose and Need Working Paper

May 18, 2017

Gnoss Field Airport Public Workshop2Federal Aviation

AdministrationMay 18, 2017Extend Runway 13/31

Agenda

• Welcome and Introductions• Purpose of Workshop• Status of Project Environmental Evaluations• Project Information • Data Collection• Questions and Answers



Introduction• County of Marin (airport sponsor)

• Federal Aviation Administration (lead federal agency)

• Landrum & Brown (environmental consultant for):• FAA Environmental Impact Statement (EIS)• Marin County Environmental Impact Report (EIR)



Purpose of Public Workshop• Update airport community and general public

regarding the status of the environmental evaluations

• Provide information about the upcoming FAA data collection effort regarding aviation activity and the “critical aircraft” at the airport

• Provide opportunity for public to ask questions regarding the presentation and data collection effort



• Extend Runway 13/31 to allow existing aircraft, as represented by the family grouping of critical aircraft at the airport, to operate without operational weight restrictions under hot weather conditions.

• For FAA runway length calculation purposes, hot weather is defined as the mean daily maximum temperature of the hottest month

• Mean daily maximum of hottest month = 82 degrees F in July, August, and September per National Oceanic & Atmospheric Administration data

Purpose of Runway Extension Project



EIS – EIR Processing Status UpdateCompleted Steps

FAA concludes Supplemental to Final EIS needed

January 2015

Final EIS Issued June 2014

PrepareFinal EIS

CONDUCT PUBLIC

HEARING

Respond to Agency/Public

Comments

Agency/PublicCirculation

Notice of Availability

of Draft EIS/EIR & Public Hearing

Prepare Draft EIS/EIR

Detailed Environmental

Analysis

CONDUCT SCOPING

Develop Preliminary Range of

Alternatives

Baseline Data Collection

ISSUE NOTICE OF INTENT & NOTICE OF PREPARATION

Identify Purpose & Need

Project Identification

Final EIR Certified February 2014

PrepareFinal EIR



Distribute Final Supplement to Final EIS

Prepare Final Supplement to

Final EIS & Response to Comments

Public/Agency Circulation & Public

Comment Meeting

Notice of Availability of

Draft Supplement to Final EIS

Prepare Draft Supplement to Final EIS Based on Runway Length Established through Purpose & Need Working Paper & Public Comments

Evaluate Public Comments

Public Comment Meeting on Purpose & Need

Working Paper

Determine Additional Data

Collection/EvaluationNeeded

We Are Here

Prepare Purpose and Need Working

Paper

Update Runway Length Analysis

Update Aviation Activity

Information to Identify Critical

Aircraft

Agency/Public Circulation and Public Meeting


Updated Purpose & Need Working Paper

Additional Data Collection onAviation Activity &

Current Critical Aircraft

Public Workshop Regarding EIS Status & Data Collection For


FAA Record of Decision on

Final Supplement to Final EIS

EIS Processing Status UpdateRemaining Steps – Approx. 30 months to end

30 Day No Action

Period

Marin County Evaluates if EIR

Changes are Needed

Marin County Modifies EIR if

Needed & Updates Any Necessary Certifications

Marin County Decides

Whether to Proceed with Project



Gnoss Field

• One Runway (13/31) - 3,300 Feet

• 95,000 Takeoff/Landing a Year

• Most Aircraft Takeoff to the North and Land from the North

• Single and Twin Engine Propeller Aircraft, Small Business Jets

• System of Levees Protect Runway from Flooding

Existing Airport

N



• Existing runway length (3,300 feet) can result in operational weight restrictions for some more demanding aircraft in hot weather

• Aircraft must either reduce fuel or reduce the passengers and/or cargo.

Current conditions



Critical Aircraft Determination and Purpose and Need for Runway Extension

• After publication of the June 2014 FAA Final EIS the FAA has been conducting additional evaluations to confirm what is the critical aircraft at Gnoss Field Airport?



Critical Aircraft and Runway Length Determination for Gnoss Field Airport

• The “critical aircraft” is the most demanding aircraft in terms of the physical dimensions of the airport such as the length and width of runways and taxiways, that regularly uses an airport*

• Regular use of an airport is defined as 500 or more itinerant operations (takeoffs and landings) of the critical aircraft*

• Runway length determination is based on the requirements of the critical aircraft

*Definitions based on FAA Order 5090.3C Field Formulation of the National Plan of Integrated Airport Systems (NPIAS)



• June 2014 – Final EIS: critical aircraft Cessna 525 (B-1)• Justified FAA runway length determination 4,400 feet

• May 2016 – Purpose and Need Working Paper: critical aircraft family of B-II Turboprop Aircraft• Justified FAA runway length determination 3,600 feet

Critical aircraft and justified FAA runway length determinations for Gnoss Field Airport



Aircraft reference codes for aircraft typically operating at Gnoss Field Airport

1 Source: FAA Advisory Circular 150/5300-13A “Airport Design”



• June 2014 – Final EIS: critical aircraft Cessna 525 (B-1)• Justified FAA runway length determination 4,400 feet




County Proposed Runway Improvements identified in Final EIR and Final EIS



• May 2016 – Purpose and Need Working Paper: critical aircraft family of B-II Turboprop Aircraft• Justified FAA runway length determination 3,600 feet




Revised Proposed Runway Improvements identified in FAA May 2016 Purpose and Need Working Paper



• Comments from pilots and aircraft owners on May 2016 Working Paper stated total operations of more demanding aircraft were undercounted citing:• Undercounted Visual Flight Rules flights• Evidence from fuel sales• Personal observations

• FAA and Marin County concluded these comments should be considered in detail




• Contact those commenters who provided information on aviation operations of most demanding aircraft at Gnoss Field

• Request voluntary interviews and verification of aircraft operations through logs or other data

• Request voluntary interviews and verification of fuel sales from fuel vendor or aircraft owners

• Review 2016 FAA radar track and flight plan data• Additional data collection focused on most demanding

aircraft• Runway length for smaller, less demanding aircraft is

sufficient under all conditions considered in FAA Advisory Circular 150/5325-4B Runway Length Requirements

Voluntary critical aircraft data collection efforts



• May-June 2017: Additional data collection for Updated Purpose and Need Working Paper




• July – Oct 2017 Analyze data• Nov – Dec 2017:

• Circulate Updated Purpose and Need Working Paper for public review

• Hold public meeting to receive any public comments on the working paper

• Review public comments and adjust determinations in working paper if warranted

• Proceed with next steps in EIS

Update FAA Purpose and Need Working Paper and distribute for public comment



Distribute Final Supplement to Final EIS

Prepare Final Supplement to

Final EIS & Response to Comments

Public/Agency Circulation & Public

Comment Meeting


Draft Supplement to Final EIS

Prepare Draft Supplement to Final EIS Based on Runway Length Established through Purpose & Need Working Paper & Public Comments

Evaluate Public Comments

Public Comment Meeting on Purpose & Need

Working Paper

Determine Additional Data

Collection/EvaluationNeeded

We Are Here

Prepare Purpose and Need Working

Paper

Update Runway Length Analysis

Update Aviation Activity

Information to Identify Critical

Aircraft

Agency/Public Circulation and Public Meeting



Additional Data Collection onAviation Activity &

Current Critical Aircraft

Public Workshop Regarding EIS Status & Data Collection For


FAA Record of Decision on

Final Supplement to Final EIS

EIS Processing Status UpdateRemaining Steps – Approx. 30 months to end

30 Day No Action

Period

Marin County Evaluates if EIR

Changes are Needed

Marin County Modifies EIR if

Needed & Updates Any Necessary Certifications

Marin County Decides

Whether to Proceed with Project



Question and Answer period regarding presentation

1. If you have a question please raise your hand and moderator will acknowledge you to ask your question

2. We request you state your name. Optionally state the community you live and/or whether you are an airport user such as a pilot or aircraft owner

3. We will rotate among audience members who have questions4. If you have a statement rather than a question, please limit it to 2

minutes5. If you want to make additional comments you can submit them to:

Doug Pomeroy, Environmental Protection SpecialistFAA San Francisco Airports District Office1000 Marina Boulevard – Suite 220, Brisbane, CA 94005.E-mail [email protected], telephone 650-827-7612

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