Part 150 Process

Part 150 Process Tab-FINAL

The Fresno Yosemite International Airport Part 150 Noise Exposure Map (NEM) Update

The City of Fresno, Airport Department completed its first noise and land use compatibility study in 1988 for the Fresno Yosemite International Airport (FAT) per Title 14 of the Code of Federal Regulations Part 150, often denoted “14 CFR Part 150” or “Part 150”.  The Federal Aviation Administration (FAA) completed its review of the original Noise Exposure Map (NEM) and found it in compliance with Part 150 requirements on February 7, 1990.  The FAA approved the Noise Compatibility Program (NCP) and published a “Record of Approval” (ROA) on September 14, 1990.  As aircraft types and operations change over the years, a subsequent update to the Noise Exposure Map was conducted in 2004 and the FAA found it to be in compliance with Part 150 on July 6, 2005.  An update to the Noise Compatibility Program was also conducted during this time period with the FAA publishing the ROA on July 28, 2008.  The City is currently updating the Noise Exposure Maps for FAT to address changes in aircraft types (such as the California Air National Guard change from F-16 to F-15 aircraft), changes in aircraft operations, changes to runways and to meet FAA requirements. The Part 150 Process section of this site briefly describes the 14 CFR Part 150 regulation, what it includes, and how the communities around the airport can be involved in this project at FAT.

What is Part 150?

As part of this Noise Exposure Map update process, the City must follow a set of procedures and standards under the U.S. Code of Federal Regulations, Title 14 Part 150, entitled “Airport Noise Compatibility Planning”, when assessing noise exposure and when developing means to mitigate its effects. This regulation is commonly referred to as Part 150.

A Part 150 Study is an in-depth noise and land use compatibility study authorized by the FAA that involves working with the community to address its concerns and developing a detailed analysis of aviation-related noise levels and the variables that affect them. A Part 150 Study consists of two technical elements: Noise Exposure Maps (NEMs) and Noise Compatibility Program (NCP). The NEMs identify aircraft noise exposure contours, developed using the FAA’s Aviation Environmental Design Tool (AEDT), which are overlaid on a map that depicts the airport’s layout and land uses within the communities surrounding the airport. The NCP is a summary of analyses and proposed actions that the FAA, airport operators, active airlines, and communities near the airport can perform to reduce existing and future aircraft noise and land use incompatibilities. These actions may include noise abatement, noise mitigation, and other preventive measures.

With funding assistance from the FAA, the City of Fresno Airports Department, along with a consulting team led by HMMH, is conducting an update of the 2005 Noise Exposure Maps. The current Study will update the 2005 NEM based upon current conditions and aircraft operational activity at the airport. The resulting NEM’s will reflect the noise exposure from aircraft operations occurring during the year of submission to the FAA (2017) and as forecast five years into the future (2022).

FAT Part 150 NEM Update Process

The project to update the FAT Part 150 NEMs will include, but is not limited to, the following major tasks:

  • Inventory FAT existing conditions;
  • Prepare updated FAT fleet mix forecasts for year of submission (2017) and a five-year forecast (2022);
  • Prepare draft and final updated Noise Exposure Maps;
  • Prepare NEM supporting documentation; and
  • Conduct agency and public consultations.