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klass ditches

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  1. 2013 Federation of Soil and Water Conservation District Orientation for New Employees

    two-stage ditch concept and edge-of-field bioreactors. ...

  2. OARDC announces 2013 award winners at conference

    Year Award for his two-stage ditch design, which has benefits for both agriculture and the environment. ... OARDC scientists. The new design has a small main channel at the bottom of the ditch-- stage one-- and ...