In inland plants, such as that in Solvay, New York, the byproducts have been deposited in "waste beds"; the weight of material deposited in these waste beds exceeded that of the soda ash produced by about 50%. These waste beds have led to water pollution, principally by calcium and chloride. The waste beds in Solvay, New York substantially increased the salinity in nearby Onondaga Lake, which used to be among the most polluted lakes in the U.S. and is a superfund pollution site. As such waste beds age, they do begin to support plant communities which have been the subject of several scientific studies.