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Reid-Hillview Airport FAR Part 150 Noise and Land Use Compatibility Study

Reid-Hillview Airport FAR Part 150 Noise and Land Use Compatibility Study. Third Public Meeting 25 September 2001. Meeting Agenda. 7:00 PM Welcome & Introductions 7:10 PM Noise Exposure Contour Sets 7:40 PM Land Use Compatibility Guidelines 7:55 PM Noise Mitigation Techniques

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Reid-Hillview Airport FAR Part 150 Noise and Land Use Compatibility Study

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  1. Reid-Hillview Airport FAR Part 150 Noise and Land Use Compatibility Study Third Public Meeting 25 September 2001

  2. Meeting Agenda 7:00 PM Welcome & Introductions 7:10 PM Noise Exposure Contour Sets 7:40 PM Land Use Compatibility Guidelines 7:55 PM Noise Mitigation Techniques 8:30 PM Questions and Comments 8:50 PM What’s Next 8:55 PM Closing

  3. Welcome & Introductions • County of Santa Clara Staff • Elected Officials • Consultant Team • Brief Review of Project Progress

  4. Noise Exposure Contour Sets Gene Reindel HMMH Assistant Project Manager

  5. Community Noise Equivalent Level(CNEL) • A way to describe the noise dose for a 24-hour period • Accounts for noise event “noisiness” (SEL) • Accounts for number of noise events • Provides an additional weighting factor for evening (3X) and nighttime (10X) operations • California State and Federal Standard • Correlates well with community annoyance

  6. Community Noise Equivalent Level(CNEL) • CNEL used for land compatibility • Under FAR Part 150: “Table 1 Land Use Compatibility with Yearly Day-Night Average Sound Levels,” 65 dB CNEL is considered incompatible with the following uses: residences and schools • Hospitals, nursing homes, churches, auditoriums, and concert halls in these areas would require a Noise Level Reduction (NLR) of 25 • Outdoor music shells and amphitheaters are also incompatible

  7. Correlation of CNEL with AnnoyanceSchultz Curve

  8. Different CNEL 65 Environments

  9. Non-Aircraft Noise Environments • Qualitative descriptions of non-aircraft noise environments: Qualitative DNL, dBDescription ~ 46 – 51 Quiet Suburban ~ 52 – 57 Suburban ~ 58 – 63 Urban ~ 64 – 69 Noisy Urban ~ 70 – 75 Very Noise Urban ~ 76 – 81 Downtown City Noise

  10. Model Input Requirements • Aircraft Fleet Mix • Representative Flight Tracks • Runway and Helipad Use • Number of Annual Operations • Determines annual-average day

  11. RHV Fleet Mix (RHV and FBO Data) • Single-Engine Piston • GASEPF (fixed-pitch propeller) • CNA 172 (Cessna 172) • Twin-Engine Piston • GASEPV (variable-pitch propeller) • BEC58P (Baron 58P) • Twin-Engine Turboprop • CNA 441 (Cessna 441) • Helicopter • H500 (Hughes H500D) • B206L (Bell 206L)

  12. RHV Flight Tracks • Fixed Wing Flight Tracks (from Radar & RHV) • Departure flight tracks • Arrival flight tracks • Circuit (touch-and-go) flight tracks • Helicopter Flight Tracks (from observations & RHV) • Departure flight tracks • Arrival flight tracks • Circuit flight tracks • On-airport hovering flight tracks

  13. Fixed-Wing Departure Flight Tracks

  14. Fixed-Wing Arrival Flight Tracks

  15. Fixed-Wing Circuit Flight Tracks

  16. Helicopter Flight Tracks

  17. Runway & Helipad Use (RHV & Tower) • Runway Use • 85 % Runway 31 (L & R) • 15 % Runway 13 (L & R) • Helipad Use (Hovering Operations) • 98.5 % Haypatch • 1.0 % X-Ray • 0.5 % Yankee

  18. Number of Operations - 2000 • 647 daily operations (236,073 annual ops) • 543 Single-Engine Piston • 89 Twin-Engine Piston • 6 Twin-Engine Turboprop • 8 Helicopter • Day/Evening/Night Split • 83 % Day • 14 % Evening • 3 % Night • No night touch-and-gos • No night helicopter operations

  19. Number of Operations - 2005 • Forecast Basis (fixed-wing) • Total demand up to 150 newly based aircraft at RHV • Total of 783 based aircraft • Only 110 spaces available • Other airports take half the demand • 75 newly based aircraft at RHV • Ratio of operations per based aircraft remains constant (which it has historically done) • 27,375 additional aircraft operations annually • Fleet mix remains unchanged • Forecast Basis (helicopter) • Same percentage increase to operations as fixed-wing

  20. Number of Operations - 2005 • 723 daily operations (263,772 annual ops) • 607 Single-Engine Piston • 100 Twin-Engine Piston • 15 Twin-Engine Turboprop • 10 Helicopter • Day/Evening/Night Split • 83 % Day • 14 % Evening • 3 % Night • No night touch-and-gos • No night helicopter operations

  21. Number of Land Use Parcels Inside Contours

  22. Land Use Compatibility Guidelines Steve Alverson HMMH Project Manager Reid-Hillview FAR Part 150 Noise and Land Use Compatibility Mitigation Study

  23. Existing Guidelines for Land Use Compatibility • Federal Guidelines • Federal Aviation Administration • FAR Part 150 • State Guidelines • Department of Transportation of the State of California • Division of Aeronautics • Title 21 Noise Standards (Subchapter 6) • County Guidelines • County of Santa Clara • Noise and Land Use Compatibility Guidelines

  24. Federal Aviation AdministrationFAR Part 150 • A150.101 Noise Contours and Land Usages • Section (d) states: • For the purpose of compliance with this part, all land uses are considered to be compatible with noise levels less than DNL 65 dB • Local needs or values may dictate further delineation based on local requirements or determinations

  25. State of California Department of TransportationTitle 21 Noise Standards • 5012. Airport Noise Standard • The standard for the acceptable level of aircraft noise for persons living in the vicinity of airports is hereby established to be a community noise equivalent level (CNEL) of 65 decibels (dB). • The standard for the acceptable level or aircraft noise for public and private schools, hospitals and convalescent homes, and places of worship is a CNEL of 45 dB indoors.

  26. Santa Clara County General Aviation Airports Noise and Land Use Compatibility Guidelines • Residential and Educational Facilities (including schools, libraries, churches, and cultural centers) • Satisfactory below 60 dB CNEL • Allowable with normal construction, windows sealed, forced air ventilation, outdoor activity may be interrupted 60 to 65 dB CNEL • Avoid land use unless related to airport service above 65 dB CNEL

  27. Noise Mitigation Techniques Steve Alverson HMMH Project Manager Reid-Hillview FAR Part 150 Noise and Land Use Compatibility Mitigation Study

  28. FAR Part 150 Noise Mitigation • Purpose • To Reduce the Number of People Exposed to Aircraft Noise • To Reduce the Incompatible Land Uses Around Airports

  29. FAR Part 150 Required Elements • Preferential Runway Measures • Noise Abatement Flight Procedures • Noise Abatement Flight Paths • Airport Use Measures • Airport Layout Measures

  30. Current Noise Mitigation Program at RHVFAA Letter of Agreement Recommended Procedures and Adherence is Voluntary • Preferential Runway Use • Departures and Arrivals on 31 R/L • Noise Abatement Flight Procedures • None • Noise Abatement Flight Paths • 31 R departures are requested to make a 20 turn upon reaching 500 feet AGL and/or the airport boundary (Ocala Ave)

  31. Current Noise Mitigation Program at RHV FAA Letter of Agreement Recommended Procedures and Adherence is Voluntary • Airport Use Measures • No touch and go’s between 9:00 PM and 7:00 AM • No intersection departures • No jet operations (except stage 3 jet aircraft) • No formation takeoffs or landings • Helicopter operations restricted to runways from 6:00 PM to 7:00 AM • Simulated emergencies are prohibited

  32. Current Mitigation at RHV FAA Letter of Agreement Recommended Procedures and Adherence is Voluntary • Airport Use Measures (continued) • Low level fly-bys discouraged except for gear-check or other emergency-related requirements • Fixed-wing traffic pattern altitude at 1000 feet AGL • Helicopter traffic pattern altitude at 700 feet AGL • Helicopters are to avoid schools and mobile home park • Airport Layout Measures • None

  33. Preliminary List of Mitigation Techniques • Preferential Runway Use • Re-examine current measure • opposite flow may be better for noise abatement • Noise Abatement Flight Procedures • Noise abatement departure procedures • reduced RPM settings may reduce departure noise • Noise Abatement Flight Paths • Obtain better adherence to noise abatement flight path contained in draft FAA letter of agreement

  34. Preliminary List of Mitigation Techniques • Airport Use Measures • Review existing measures • Airport Layout Measures • Consider displaced threshold for 13 departures • Displace Tully Road to the southeast • Extend both runways towards Tully Road

  35. Preliminary List of Mitigation Techniques • Land Use Measures • Provide homes within 65 CNEL contour with residential sound insulation • Currently 10 homes; 30 homes in 2005 • Noise Program Management • Install noise monitoring system to report excessive noise events • Improve citizen complaint mechanism • Implement community participation program

  36. Preliminary List of Mitigation Techniques • Community Ideas/Suggestions • Kate Gillespie will keep record

  37. Community Questions, Comments & Concerns Reid-Hillview FAR Part 150 Noise and Land Use Compatibility Mitigation Study

  38. What’s Next Gene Reindel HMMH Assistant Project Manager Reid-Hillview FAR Part 150 Noise and Land Use Compatibility Mitigation Study

  39. What’s Next • Submit Noise Exposure Map (NEM) to FAA • Evaluate Noise Abatement and Mitigation Options • Recommend Mitigation Package to RHV • Generate 2005 Mitigated Noise Exposure Contours • Present Potential Mitigation Results to Community • Submit Noise Compatibility Plan (NCP) to FAA

  40. How to provide input to this study: Project e-mail address: Reid@3dvisions.to Project Meeting Notices: www.countyairports.org Project mail: Kate Gillespie, 3D Visions 3661 Buchanan Street, Suite 200 San Francisco, CA 94123-1708 Project fax line: 415-409-9612 Reid-Hillview FAR Part 150 Noise and Land Use Compatibility Mitigation Study

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