Annual Value 



$2,624.60(A/P,7%,30) 



$2,624.60(0.0837) 



$219.67 



Replace discharge elbows (45 deg) every 5 years at a cost of $0.75 K per action (as per 

 Indian River Inlet). For Shinnecock, a total of five actions will be required for the 30- 

 year project life: 

 Action 1--P = $0.75 K(P/F,7%,5) 



$0.75 K(0.7009) = $525.68 



Action 2--P = $0.75 K(P/F,7%,10) 



$0.75 K(0.4915) = $368.63 



Action 3--P = $0.75 K(P/F,7%,15) 



$0.75 K(0.3448) = $258.60 



Action 4--P = $0.75 K(P/F,7%,20) 



$0.75 K(0.2420) = $181.50 



Action 5--P = $0.75 K(P/F,7%,25) 



$0.75 K(0. 1699) = $127.43 



Present Value = $1,461.84 



Annual Value 



$1,461.84(A/P,7%,30) 



$1,461.84(0.0837) 



$122.36 



Replace steel dredge pipe every 6 years at a cost of $2 K per action (as per Indian River 

 Inlet). For Shinnecock, four actions will be required in the 30-year project life: 



Action 1--P 



$2 K(P/F,7%,6) 









$2 K(0.6528) 



= 



$1,305.60 



Action 2-P = 



$2 K(P/F,7 3 /s,12) 









$2 K(0.4264) 



= 



$852.80 



Action 3— P = 



$2K(P/F,7%,18) 









$2 K(0.2788) 



= 



$557.60 



Action 4--P = 



$2 K(P/F,7%,24) 









$2K(0.1824) 



E 



$364.80 





Present Value 



= 



$3,080.80 





Annual Value 



= 



$3,080.80(A/P,7%,30) 







= 



$3,080.80(0.0837) 







= 



$257.86 



Pumphouse 



a. Replace roof of pumphouse every 20 years at a cost of $2.8 K per action (as per Indian 

 River Inlet). For Shinnecock, a total of one action will be required in the 30-year project 

 life: 



114 



Appendix I Capital Replacement Costs, Alternative 2 



