Big City Carl, a local politician, is pushing a new dock and pier system at the river to attract new commerce to the city. A committee appointed by the mayor (an opponent of Carl) has developed the following estimates.

Input Variable	Base Case
Initial building cost	$6,000,000
Initial equipment cost	$1,500,000
Annual benefits	$3,000,000
Annual O&M cost	$1,500,000

With a MARR of 6% and a project life of 10 years, perform a sensitivity analysis on the data using PW as the assessment metric. For each input, consider deviation of -10%, -5%, 0%, 5%, 10% from the base case.

1. For each deviation of each input, calculate PW and show the result as a table similar to Table 12.2 in the lecture (see below). Then answer the following questions. Round to the nearest integer.
   • The NPW of the base case is $
   • If the Initial building cost increases by 10%, the NPW is $
   • If the Initial equipment cost increases by 10%, the NPW is $
   • If the Annual benefits increase by 10%, the NPW is $
   • If the Annual O&M cost increases by 10%, the NPW is $
2. Plot the sensitivity graph in your Excel spreadsheet. You will need to upload the spreadsheet in the next question.
3. Which input has the biggest impact on the PW? Fill in Building, Equipment, Benefits, or O&M.