Portable Monitors

Airpointer and E-BAM

The District has a robust air monitoring network that measures ambient air quality for multiple pollutants at stationary locations throughout the County. However, specific incidents or events may call for deployment of a portable air monitor. Examples include citizen complaints focused in certain areas, accidental releases, prescribed burns, and natural disasters.



The District has identified a specialized trailer-mounted system called the AirPointer (pictured, left) that measures:

  • Particulate matter (PM2.5 and PM10 ) simultaneously
  • Hydrogen sulfide (H2S) detectable down to 1 part per billion
  • Benzene, toluene, ethylbenzene, and xylene (BTEX)
  • Ozone
  • Meteorological conditions  (wind, temperature)

The system can be deployed quickly to a secure location with power and has the ability to store and transmit data to the District in real-time. Interested in learning more? Watch the video below to find out more about the Airpointer and see here for the board presentation on the Airpointer. 


Environmental Beta Attenuation Monitors (E-BAMs) (pictured, right) are effective, accurate, and easy to operate portable particulate monitors for measuring particulate matter (PM2.5 or PM10) emitted from short-term events. 

Primarily used for:

  • Smoke impacts from prescribed burns and wildfires
  • Short-term investigations and studies (e.g. dust) 


The data is recorded on an hourly basis and is transmitted to the District’s data acquisition system via a cell modem. 


For more information, please contact our Public Information Officer, Lyz Hoffman, at [email protected] or call (805) 961-8800.

air pollution control district logo

New Phone Numbers
The District has new direct lines for all staff, as well as for all of our phone lines, including our main phone number and Complaints line. You can find our new phone numbers on this webpage.

Nuevos números de teléfono
El Distrito tiene nuevos números de teléfono para comunicarse con el personal directamente, así como también para todas nuestras líneas telefónicas, incluyendo nuestro número principal y el de las Quejas. Puede encontrar nuestros nuevos números de teléfono en esta página web.