Part of the process of removing sulfur dioxide (SO2) from emissions at the Cardinal Power Plant involves the use of limestone. The process is complicated and can be messy, and when heavy deposits build up in the scrubber, the entire generating unit must come offline.
An employee at the plant suggested adding a chemical to the process that not only would allow for less limestone to be used, it would reduce those deposits in the scrubber — meaning lower maintenance time and cost.