New Public Works Facility he estimated initial cost of constructing a new public works facility is $ 12 million for a small City. There are some wetland issues that have to be mitigated and it is estimated that it will cost $500,000 to mitigate these issues. The benefit to the public for the new facility will be $2,000,000 per year due to consolidation of several departments. Annual upkeep of the facility is estimated to be $500,000 per year. The discount rate is 4% etermine if the public works facility is economically justified by three methods 1) Conventional B/C ratio 2) Modified B/C ratio 3) B- C difference