Welcome to Public Information Workshop 1 Chetcuti Room, City of Milbrae 450 Poplar Avenue Milbrae, California 94030 Wednesday, June 4, 2014 5:45 p.m. to 6:45 p.m. PDT
The FAA typically uses the airport s future year Noise Exposure Map to determine eligibility for federal funding of noise mitigation programs (e.g., sound insulation). The most recent Noise Exposure Maps for SFO were accepted by the FAA in July 2002. The Airport Commission is updating the SFO Noise Exposure Maps to ensure continued eligibility for sound insulation program funding. The goal is to submit the updated Noise Exposure Maps for SFO to the FAA in 2014 and for the FAA to accept the updated Noise Exposure Maps by March 2015. Project Overview
The SFO must be prepared in accordance with the Federal Aviation Regulations (FAR) Part 150. FAR Part 150 includes detailed guidance and a checklist of the items that must be included in the SFO. For example, the SFO must include aircraft noise exposure contours for the year of submission and a future year (typically 5 years in the future). The SFO will include aircraft noise contours for 2014 and 2019. Project Overview
SFO Future Airport Layout
THE SFO NOISE EXPOSURE MAP REPORT WILL: Quantify existing and future aircraft noise exposure levels in the vicinity of SFO. Provide the Airport Commission and the FAA with a new set of Noise Exposure Maps to assess ongoing noise mitigation needs. DURING THE SFO NOISE EXPOSURE MAP REPORT, THE AIRPORT COMMISSION WILL NOT: Develop or recommend noise abatement or noise mitigation measures designed to minimize aircraft noise impacts. Determine the sound insulation program boundaries. Identify properties that are eligible for sound insulation. Project Objectives
FEDERAL AVIATION ADMINISTRATION Controls aircraft while in flight Responsible for controlling noise at its source (i.e., aircraft engines) Certifies aircraft and pilots AIRPORT PROPRIETORS Limited authority to adopt local restrictions Responsible for capital improvement projects and infrastructure LOCAL GOVERNMENTS AND STATES Promote compatible land use through zoning Require real estate disclosure Mandate sound-insulating building materials Who Can Regulate Airport Noise?
The Decibel Scale Sample CNEL Values The Decibel Scale and Sample CNEL Values
Day-Night Average Sound Level (DNL) and Community Noise Equivalent Level (CNEL) DNL CNEL 24-hour time-weighted energy average noise level measured in dba Captures the noise exposure for individual aircraft noise events during the course of a 24-hour day Noise occurring between 7 p.m. to 10 p.m. is penalized by approximately 4.8 db - Penalty was selected to account for the sensitivity to aircraft noise and activity interference during the evening hours Noise occurring between 10 p.m. to 7 a.m. is penalized by 10 db - Penalty was selected to account for the higher sensitivity to aircraft noise and lower background noise levels during nighttime hours Specified in Title 21 of the California Airport Noise Regulations and required for use in the development of aircraft noise exposure contours Specified in 14 CFR Part 150 and required for use in the development of aircraft noise exposure contours (FAA permits the use of CNEL for noise studies in California) Demonstrates a strong relationship between increased aircraft noise and increased human annoyance A Comparison of DNL and CNEL
Aircraft Noise Levels Aircraft Noise Levels
INVENTORY AVIATION NOISE Define Key Issues Airport Operations Aircraft Fleet Mix Flight Procedures Noise Monitoring Flight Tracking Noise Modeling Noise Contours: Existing/ Future START PROJECT Base Mapping Develop Study Database NEM Submittal to FAA Detailed Study Design Local Zoning COMMUNITY IMPACTS Land Use Local Land Use Population Data Population Institutions Growth Risk Noise Impacts: Existing/ Future FAR Part 150 NEM Update Process
NOISE EXPOSURE CONTOURS A noise exposure contour identifies areas of equal noise exposure around an airport. Noise exposure contours are similar to contours on topographic maps which show areas of equal elevation. NOISE EXPOSURE MAPS OR NEMS A Noise Exposure Map is a map showing noise exposure contour lines (or footprints) which identify areas of specific noise levels around an airport. Noise Exposure Maps also include a graphic depiction of geographical features and land uses that surround an airport. *Other aircraft noise and land use compatibility planning terms are defined in the meeting handout. FAR Part 150 Terminology
Airport Environs
Existing Sound Insulation Program Boundary
Generalized Existing Land Uses
Project Schedule
SAN FRANCISCO INTERNATIONAL AIRPORT: Bert Ganoung or Audrey Park P.O. Box 8097 San Francisco, CA 94128 CONSULTANT TEAM: Adrian Jones ESA Airports 550 Kearny Street, Suite 800 San Francisco, CA 94108 Cindy Gibbs or Paul Dunholter BridgeNet International 20201 SW Birch Street, Suite 250 Newport Beach, CA 92660 PROJECT WEBSITE: http://www.sfopart150study.com email: info@sfopart150study.com Submit comments and request information here Project Contacts