New York state officials called on St Lawrence Cement to provide more data to better gauge the environmental impact a proposed expansion of its Hudson, NY, plant would have on the surrounding area including the Northwest Corner of Connecticut.  "The head of the Department of State sent a letter to St Lawrence Cement’s project manager requesting more information on 10 quite broad topic areas, a host of things that comes under the Department of State’s purview of looking at the coastal issues," said Jay Burgess, communications director for Scenic Hudson, an environmental group that has opposed the proposed expansion. Among the additional data requested from St Lawrence Cement, the Department of State is calling for alternative plant designs, measures to reduce noise and visual effects, balloon tests and assessments of new technology to cut emissions and other information.