EPA Endangerment Finding

On February 23, 2023 Congresswoman Lofgren and Eshoo and Congressmen Khanna and Panetta sent a letter to Secretary Pete Buttigieg regarding the sale of unleaded avgas.

On January 12, 2022 the EPA issued a Press Release and letter their decision to evalute lead emissions from aircraft

On February 28, 2022 Michael McDonald submitted a response to the EPA.

On January 17, 2023 the Attorney General of CA, CT, DC, MD, MA, MN, NJ, NY, OR, PA, VT and WI issue comments on proposed finding.

Surface Lead Study

The County engaged Jacobs Engineering to analyze surface lead levels at Reid-Hillview and San Martin Airports.

Airborne Lead Study

  • On August 3, 2021, the airborne lead study was released.   You can find it here
  • The Santa Clara County Office of Education released this report Children's Exposure to Lead in Santa Clara County in August 2021.
  • Lead Study overview provided by the Office of Communications and Public Affairs.
  • On February 28, 2022, Michael McDonald sent this Report to EPA  regarding the Aviation Lead Study at Reid-Hillview Airport
  • The County has put together this media page with additional information regarding the airborne lead study including links to past meeting data and news conferences.
  • In November 2022, the lead study was published online by the National Academies of Science.  The study will be included in the March 2023 printed journal.  (web site, pdf)

Board of Supervisors Actions

Fuel Specific Documents and Sites of Interest

EPA’s Data and Analysis of Piston-Engine Aircraft Emissions of Lead at U.S. Airports​

The EPA is evaluating the air quality impact of lead emissions from aircraft using leaded aviation gasoline as described in the Federal Lead Action Plan to Reduce Childhood Lead Exposures and Associated Health Impacts and in response to the petitioner’s requests.

The materials provided below describe methods to calculate airport lead inventories, fact sheets on air quality monitoring at airports, a report and fact sheet on model-extrapolated estimates of lead concentrations at airports, and estimates of the number of people who live near or attend school near airports.

Following is a list of additional documents related to the ongoing study of airborne lead at airports and the development of unleaded aviation fuel.


2018 Public Comments

All public comments received regarding the perceived hazards associated with leaded aviation gasoline are provided below.

Anissa Mohler 12/02/2018

California Pilots Association 12/02/2018

    SCAPA EPA Lead Monitoring at the San Carlos Airport 04/20/2015



Contact Us

2500 Cunningham Avenue
San Jose, CA 95148
Phone: (408) 918-7700​
Email: [email protected] 

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