Federal scientists have determined that a family of widely used pesticides poses a threat to dozens of endangered and threatened species, including Pacific salmon, Atlantic sturgeon and Puget Sound orcas. The National Marine Fisheries Service issued its new biological opinion on three organophosphate pesticides - chlorpyrifos, diazinon and malathion - after a yearslong court fight by environmental groups. At the urging of pesticide manufacturers, the Trump administration had sought a two-year delay of a court-ordered deadline to issue the findings by the end of 2017, but it was unsuccessful.
The exhaustive 3,700-page federal review , dated Dec. 29, concludes that chlorpyrifos and malathion jeopardize 38 out of the 77 species under the jurisdiction of the fisheries service and that diazinon was found to jeopardize 25 of the listed species. The report makes detailed recommendations to the Environmental Protection Agency for new restrictions on how and where the pesticides can be sprayed to help limit the harm.
EPA Administrator Scott Pruitt in March reversed an Obama-era effort to bar the use of chlorpyrifos on fruits and vegetables after peer-reviewed academic studies found that even tiny levels of exposure could hinder the development of children's brains. EPA's press office did not respond Friday to a request seeking comment about the latest federal study on the threat to protected species.
Organophosphorus gas was originally developed as a chemical weapon before World War II. Dow Chemical, based in Midland, Michigan, has been selling chlorpyrifos for spraying on citrus fruits, apples, cherries and other crops since the 1960s. It is among the most widely used agricultural pesticides in the United States, with Dow selling about 5 million pounds (2.3 million kilograms) domestically each year.
Source: My Wabash Valley, Jan 12, 2018