The National Marine Fisheries Services has agreed to review the effects of 37 pesticides on salmon and steelhead after a lawsuit was filed by environmental and fishing groups.  The Seattle Times reported that the plaintiffs, which include the Northwest Coalition for Alternatives to Pesticides and the Pacific Coast Federation of Fisherman's Associations is  hoping "the studies will lead to new science-based measures to protect streams from pesticides that pose a risk to salmon and steelhead".

"Earlier studies by the National Marine Fisheries Service (NMFS) indicate that trace amounts of one organophosphate insecticide — diazinon — can affect the salmon's nervous systems in levels as low as one to 10 parts per billion. Others studies have indicated that pesticides can affect swimming ability and growth."

Joshua Osborne-Klein, an attorney for Earthjustice, which represents the plaintiffs, says "We are very encouraged by the fact that NMFS has agreed to go through this process but will remain vigilant."