6. Boardman Chapter 14, exercise 2. [Hint: the key to this problem is carefully laying out the impacts, year by year, for all of the stakeholder groups and then calculating present values. Some thoughts to consider: a. For part (b), in which benefits "decay" at 20% per year starting after the end of the 2-year post-program period, Appendix 9-A of Boardman discusses the mechanics. But in a nutshell, when you have decay at annual rate o, you can calculate the UNDISCOUNTED but DECAYED impact of $X experienced in year t as (1+8)' b. Which of Boardman's "10 steps" are highlighted in this