Did the Feasibility Study evaluate calcium hydroxide or ferrus sulfate as a treatment alternative?
Ms. Lukasiewicz responded: Yes. While the use of calcium as a chemical treatment alternative was initially considered, it was screened out in favor of aluminum sulfate, which was deemed a more appropriate option for this lake. Treatment with iron compounds was also considered, but the iron to phosphorus ratio in the lake is not conducive to using iron as a treatment alternative. Mr. Zebuth asked: What impacts would you expect to see in the neighboring communities with implementation of chemical treatment? Ms. Lukasiewicz responded: If the alum and sodium aluminate were properly applied and the floc was created in the mud zone, as anticipated, you would likely see rapid improvements in the water column. Alum is currently used by municipal water treatment facilities to floc out suspended materials. So, based on case studies, we would not anticipate a negative impact on the water supply to the communities. There could actually be some benefits based on the improved water quality and clari
