The million dollar question facing the city of Sebeka in regard to the dike breach at the wastewater treatment plant, according to the city engineer, is what standards they will be held to by the Minnesota Pollution Control Agency (MPCA).  The treatment plant was built nearly 32 years ago under different MPCA regulations than those in effect today. If the MPCA requires a pond improvement project, the dollar amount escalates substantially. Rebuilding the one pond with a PVC liner could cost from $500,000 to $700,000, provided the work did not require moving a lot of dirt. If it did, the cost could escalate to a million dollars or more for the one pond.