An environmental engineer wants to evaluate three different methods for disposing of a non- hazardous chemical waste: land application, fluidized bed incineration, and private disposal contract. The estimates are as follows: Land Incineration Contract First Cost -150,000 -900,000 0 Annual Operating Cost -95,000 -60,000 -140,000 Life 4 6 2 Salvage Value at end of any year 25,000 300,000 0 Using an interest rate of 15%, determine the best alternative by: a) Using the PW Analysis with an infinite planning horizon. (16 Points) b) Using the PW Analysis with an 10-year study period. (14 points) c) Using the AW Analysis considering the useful life of each alternative. Comment on the results. (10 Points) An environmental engineer wants to evaluate three different methods for disposing of a non- hazardous chemical waste: land application, fluidized bed incineration, and private disposal contract. The estimates are as follows: Land Incineration Contract First Cost -150,000 -900,000 0 Annual Operating Cost -95,000 -60,000 -140,000 Life 4 6 2 Salvage Value at end of any year 25,000 300,000 0 Using an interest rate of 15%, determine the best alternative by: a) Using the PW Analysis with an infinite planning horizon. (16 Points) b) Using the PW Analysis with an 10-year study period. (14 points) c) Using the AW Analysis considering the useful life of each alternative. Comment on the results. (10 Points)