Complex sentence: Dam removal however may become increasingly common as dams age, with an example being the decommissioning of the Bull Run Hydroelectric Project, which was the largest concrete dam ever removed in the United States as of 2012.
Split into simpler sentences: Dam removal however may become increasingly common as dams age. An example of this is the decommissioning of the Bull Run Hydroelectric Project, which was the largest concrete dam ever removed in the United States as of 2012.