Three organizations opposed to the expansion of a Greene County cement plant, sued the state this week to challenge the state Department of Environmental Conservation permits for the plant.  Poughkeepsie’s Scenic Hudson joined the Germantown Neighbors Association and Friends of Hudson in the lawsuit, which alleges the DEC and company failed to properly consider environmental effects of the planned expansion of the Glens Falls Lehigh Cement Facility in the Town of Catskill, a few miles north of Saugerties. The DEC approved the permit in November 2003.