Toxic Air Contaminant Program

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California’s Department of Pesticide Regulation (DPR) and Air Resources Board (ARB) conduct air monitoring studies for pesticides that are candidate toxic air contaminants, as well as for pesticides that are designated as toxic air contaminants. In general, two types of monitoring are conducted: ambient monitoring in selected communities (to measure concentrations over several weeks or months) and application-site monitoring in the immediate vicinity of specific pesticide applications (to measure concentrations over several hours or days).

  • DPR requests and recommendations for monitoring
  • Protocols for monitoring
  • Reports of monitoring
  • DPR air monitoring network - DPR has established a monitoring network to sample ambient air for multiple pesticides in several communities on a regular schedule, over several years
  • ARB air monitoring network - ARB has a network of stations in primarily urban areas that monitor California’s air for a variety of pollutants such as ozone, particulate matter and toxic air contaminants. ARB's monitoring includes two pesticides: 1,3-dichloropropene and methyl bromide.