More misinformation and scare tactics.  I participated in that study.  For accurate information on the "Public Health Assessment Highway 36 Corridor Exposure Investigation" you can go to  http://public.health.oregon.gov/HealthyEnvironments/TrackingAssessment/EnvironmentalHealthAssessment/Hwy36/Pages/index.aspx      
The Summary and Conclusions, pages 1-10 provide the results.  I have lived in the Triangle Lake area for more than 40 years and our farm borders timberland on two sides.   In forty years our family has not been sickened by aerial spray conducted by the timber companies that own the neighboring land.  There are many regulations to spraying and severe penalties if those regulations are not followed.  Please think logically, farmers and foresters are stewards of the land.  We must care for the land so it can care for us.  It is how we feed our family...and yours.  We must take care of it.  Herbicides are just one of many tools we have to farm responsibly.