The report, an examination of the amount of nitrogen, phosphorus and suspended soil flowing down the Conestoga and Susquehanna rivers in 2008, was released Monday by the Susquehanna River Basin Commission. The volume of nutrients and soil in the rivers is below long-term averages."The commission's findings do help validate the fact that the commonwealth's aggressive nutrient and sediment reduction efforts over the years are working, and supporting bay restoration efforts," said John Hines, deputy secretary for water management for the state Department of Environmental Protection.