5. (25 pts) A landfill is being constructed to treat the municipal solids waste. The facility receives 90,000 tons of waste per year. The size of the landfill is 33 acres and the designed lifetime is 20 years. The landfill is consisted of 5 wells. The landfill gain revenue through tipping fees of the waste. The average tipping fee is $50 /ton. The initial cost and Operation and Maintenance (O\&M) cost is shown in Table 1. The discount or interest rate was assumed to be 1.89% (the average rate for 20 years). (1) What is the life cycle O\&M cost of the landfill at present value? (2) What is the annuity of this landfill facility at present value (A)