
The EPA has moved to minimize the impact of agricultural pesticides. New regulations include buffer strips of non-agricultural plantings around streams, lower levels of spraying and a requirement to limit spraying during high wind periods and periods of heavy rain. Agricultural pesticides can be lethal for salmon both juveniles and adults. See more information at the Oregonian.
http://www.oregonlive.com/environment/index.ssf/2009/09/epa_further_limits_three_pesti.html
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