In more than a year of negotiations with the Village of Kirtland Hills and Osborne, EPA spokesman Mike Settles says the village has cooperated, but Osborne has not.
Osborne, a developer, and his crews apparently moved rock material from the riverbed to the river banks in the hopes of alleviating erosion.
EPA experts said the unauthorized altering of the riverbed actually had the opposite effect, speeding up movement of water down the stream and increasing erosion.
In April the agency sent the village and Osborne a proposal for corrective action. Only the village responded.
EPA hopes to begin work the summer on restoring the eight thousand foot section of the river.