The California Department of Pesticide Regulation (DPR) today announced a proposed regulation that would pave the way for increased restrictions on the use of the pesticide chlorpyrifos in California.

The regulation would designate chlorpyrifos as a 'toxic air contaminant', which California law defines as an air pollutant that may cause or contribute to increases in serious illness or death, or that may pose a present or potential hazard to human health. The move comes after an extensive period of scientific and public review.

This agricultural pesticide is used to control pests that threaten more than 60 different crops, including grapes, almonds and oranges.

While the proposed regulation would list chlorpyrifos as a toxic air contaminant (TAC), possible mitigation measures to protect human health and the environment will be considered through a subsequent process involving consultation with other state and local agencies including the Office of Environmental Health Hazard Assessment (OEHHA) and the California Air Resources Board (CARB).

The Ninth U.S. Circuit Court of Appeals recently ordered the U.S. Environmental Protection Agency to cancel all registrations for chlorpyrifos within 60 days of its August 9th ruling. The U.S. EPA has not indicated whether it will appeal the order. While this issue is being addressed in the courts, DPR will continue to follow the TAC listing process per California law.

On Friday, Sept. 21, the department will begin a 45-day public comment period on its proposed decision to list the pesticide chlorpyrifos as a TAC.  Any person wishing to make a comment on whether the pesticide should be designated as such can submit written comments to [email protected]. In addition DPR will hold a hearing to receive oral comments on this issue on Thursday, Nov. 8, at 2 p.m. at California Environmental Protection Agency headquarters, 1001 I Street, Sacramento CA. Public comment closes on Nov. 9.

DPR anticipates this proposed regulation to list chlorpyrifos as a toxic air contaminant will take effect in 2019.

More info on this pesticide can be found at  https://www.cdpr.ca.gov/docs/whs/active_ingredient/chlorpyrifos.htm

Quick facts about chlorpyrifos

Source: California Department of Pesticide Regulation