Public Workshop Federal Aviation Administration Extend Runway 13/31 Gnoss Field Airport Update Status of Environmental Impact Statement And Provide Information on Data Collection Methodology to Identify Aviation Activity for Update to Purpose and Need Working Paper May 18, 2017
Agenda • Welcome and Introductions • Purpose of Workshop • Status of Project Environmental Evaluations • Project Information • Data Collection • Questions and Answers Gnoss Field Airport Public Workshop Federal Aviation 2 Extend Runway 13/31 Administration May 18, 2017
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) Gnoss Field Airport Public Workshop Federal Aviation 3 Extend Runway 13/31 Administration May 18, 2017
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 Gnoss Field Airport Public Workshop Federal Aviation 4 Extend Runway 13/31 Administration May 18, 2017
Purpose of Runway Extension Project • 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 Gnoss Field Airport Public Workshop Federal Aviation 5 Extend Runway 13/31 Administration May 18, 2017
EIS – EIR Processing Status Update Completed Steps CONDUCT Respond to PUBLIC Agency/Public Project HEARING Comments Identification Agency/Public Circulation ISSUE NOTICE OF INTENT & NOTICE Notice of OF PREPARATION Prepare Prepare Availability Final EIR Final EIS of Draft EIS/EIR & Public Hearing Baseline Data Final EIS Collection Prepare Draft Final EIR Certified Issued June 2014 EIS/EIR February 2014 Identify Purpose Detailed FAA concludes & Need Environmental Supplemental to Analysis Final EIS needed January 2015 Develop CONDUCT Preliminary Range of SCOPING Alternatives Gnoss Field Airport Public Workshop Federal Aviation 6 Extend Runway 13/31 Administration May 18, 2017
EIS Processing Status Update Remaining Steps – Approx. 30 months to end Prepare Draft Supplement to Final EIS Update Aviation Based on Runway Length Established Activity through Purpose & Need Working Information to Paper & Public Comments Identify Critical Aircraft Notice of Evaluate Public Availability of Update Runway Comments Draft Supplement Length Analysis to Final EIS Marin County Decides Public Whether to Proceed Comment Meeting Public/Agency on Purpose & Need with Project Circulation & Public Prepare Purpose Working Paper Comment Meeting and Need Working Paper Marin County Modifies EIR if Notice of Prepare Final Needed & Updates Availability of Agency/Public Supplement to Any Necessary Final EIS & Updated Purpose & Circulation and Certifications Response to Public Meeting Need Working Paper Comments Marin County Additional Evaluates if EIR Determine Data Collection on Distribute Final Changes are Additional Data Aviation Activity & Supplement Needed Collection/Evaluation Current Critical to Final EIS Needed Aircraft FAA Record of Decision on 30 Day Public Workshop Regarding We Are Here EIS Status & Data Collection For Final Supplement No Action Updated Purpose & Need Working to Final EIS Period Paper Gnoss Field Airport Public Workshop Federal Aviation 7 Extend Runway 13/31 Administration May 18, 2017
Existing Airport 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 N Runway from Flooding Gnoss Field Airport Public Workshop Federal Aviation 8 Extend Runway 13/31 Administration May 18, 2017
Current conditions • 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. Gnoss Field Airport Public Workshop Federal Aviation 9 Extend Runway 13/31 Administration May 18, 2017
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? Gnoss Field Airport Public Workshop Federal Aviation 10 Extend Runway 13/31 Administration May 18, 2017
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) Gnoss Field Airport Public Workshop Federal Aviation 11 Extend Runway 13/31 Administration May 18, 2017
Critical aircraft and justified FAA runway length determinations for Gnoss Field Airport • 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 Gnoss Field Airport Public Workshop Federal Aviation 12 Extend Runway 13/31 Administration May 18, 2017
Aircraft reference codes for aircraft typically operating at Gnoss Field Airport 1 Source: FAA Advisory Circular 150/5300-13A “Airport Design” Gnoss Field Airport Public Workshop Federal Aviation 13 Extend Runway 13/31 Administration May 18, 2017
Critical aircraft and justified FAA runway length determinations for Gnoss Field Airport • June 2014 – Final EIS: critical aircraft Cessna 525 (B-1) • Justified FAA runway length determination 4,400 feet Gnoss Field Airport Public Workshop Federal Aviation 14 Extend Runway 13/31 Administration May 18, 2017
County Proposed Runway Improvements identified in Final EIR and Final EIS Gnoss Field Airport Public Workshop Federal Aviation 15 Extend Runway 13/31 Administration May 18, 2017
Critical aircraft and justified FAA runway length determinations for Gnoss Field Airport • May 2016 – Purpose and Need Working Paper: critical aircraft family of B-II Turboprop Aircraft • Justified FAA runway length determination 3,600 feet Gnoss Field Airport Public Workshop Federal Aviation 16 Extend Runway 13/31 Administration May 18, 2017
Revised Proposed Runway Improvements identified in FAA May 2016 Purpose and Need Working Paper Gnoss Field Airport Public Workshop Federal Aviation 17 Extend Runway 13/31 Administration May 18, 2017
Critical aircraft and justified FAA runway length determinations for Gnoss Field Airport • 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 Gnoss Field Airport Public Workshop Federal Aviation 18 Extend Runway 13/31 Administration May 18, 2017
Voluntary critical aircraft data collection efforts • 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 Gnoss Field Airport Public Workshop Federal Aviation 19 Extend Runway 13/31 Administration May 18, 2017
Critical aircraft and justified FAA runway length determinations for Gnoss Field Airport • May-June 2017: Additional data collection for Updated Purpose and Need Working Paper Gnoss Field Airport Public Workshop Federal Aviation 20 Extend Runway 13/31 Administration May 18, 2017
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