Remedial Holdings' lawsuit against the Marshall/Maury Municipal Solid Waste Planning Region Board over the rejection of the company's plans to install landfills on a former Monsanto Chemicals Company site near the Duck River is nearing its end. (Photo: John Partipilo)A company that planned to install landfills at a former chemical plant site near the Duck River has been locked in a years-long legal battle with the regional waste board that shut …