2. Revisit Problem 5.15 and determine which project to select moving forward using a FW incremental analysis method. (Solve using excel.) *Make sure to arrange projects starting with lowest initial cost *Will need to do incremental analysis calculations twice as you have three projects. First compare Projects A and B, make a selection (could be either A or B), and then compare that selection with Project C. *Check and make sure you achieve the same answer as you did with AW and PW analysis. 2022 5.15 An environmental engineer is considering three methods for disposing of a non-hazardous chemi- cal sludge: land application, fluidized-bed inciner- ation, and private disposal contract. The estimates for each method are below. (a) Determine which has the least cost on the basis of an annual worth comparison at 10% per year. (b) Determine the equivalent present worth value of each alternative using its AW value. Land Application - 150,000 -95,000 25,000 First cost, $ Annual cost, S/year Salvage value, $ Life, years Inciner- ation -900,000 -60,000 300,000 6 Contract 0 -170,000 2