A city requires an increased supply of fresh water, two mutually exclusive projects are proposed an open trench project (OT) and a combination of a trench/tunnel project (TT), The Construction Periods are 24 and 36 months, respectively. The following information are given (1 mile = 5280ft). The study period is 15 years; assume that the benefits will start to occur after the construction period of the project ends. "Hint: Project Life spans are unequal so you must one of the methods in Ch5" Distance (Miles) Initial Cost/ ft Open Trench (OT) Trench - Tunnel (TT) 6.8 6.3 Trench for 2 miles:700 700 Tunnel for 4.3 miles: 2100 24 36 250,000 175,000 100,000 85,000 Completion Time (Months) Construction Support Costs/Month User Benefits/Month A city requires an increased supply of fresh water, two mutually exclusive projects are proposed an open trench project (OT) and a combination of a trench/tunnel project (TT), The Construction Periods are 24 and 36 months, respectively. The following information are given (1 mile = 5280ft). The study period is 15 years; assume that the benefits will start to occur after the construction period of the project ends. "Hint: Project Life spans are unequal so you must one of the methods in Ch5" Distance (Miles) Initial Cost/ ft Open Trench (OT) Trench - Tunnel (TT) 6.8 6.3 Trench for 2 miles:700 700 Tunnel for 4.3 miles: 2100 24 36 250,000 175,000 100,000 85,000 Completion Time (Months) Construction Support Costs/Month User Benefits/Month