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



$20 K(0.2420) = $4,840.00 



Action 5-P = $20 K(P/F,7%,25) 



$20K(0.1699) = $3.398.00 



Present Value = $38,982.00 



Annual Value = $38,982.00(A/P,7%,30) 



$38,982.00(0.0837) 

 $3,262.79 



Replace 12-in. HDPE slurry discharge pipeline every 12 years at a cost of $10.75/LF (as 

 per Fife Pipe, Inc.). Total replacement cost for 8,000 ft of pipeline (8,800 ft less 800 ft 

 under the inlet) is $86 K per action. For Shinnecock, two actions will be required in the 

 30-year project life: 

 Action #1-P = $86K(P/F,7%,12) 



$86 K(0.4264) = $36,670.40 



Action 2-P = $86 K(P/F,7%,24) 



$86K( , 0.1824) = $15.686.40 



Present Value = $52,356.80 



Annual Value = $52,356.80(A/P,7%,30) 



$52,356.80(0.0837) 

 $4,382.26 



Replace discharge elbow (90 deg) every 4 years at a cost of $1 K per action (as per Indian 

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



project life: 









Action 1--P = 



$1 K(P/F,7%,4) 









$1 K(0.7487) 



= 



$748.70 



Action 2--P = 



$1 K(P/F,7%,8) 









$1 K(0.5664) 



= 



$566.40 



Action 3--P = 



$1 K(P/F,7%,12) 









$1 K(0.4264) 



= 



$426.40 



Action 4--P = 



$1 K(P/F,7%,16) 









$1 K(0.3212) 



= 



$321.20 



Action 5--P = 



$1 K(P/F,7%,20) 









$1 K(0.2420) 



= 



$242.00 



Action 6— P = 



$1 K(P/F,7%,24) 









$1 K(0.1824) 



= 



$182.40 



Action 7--P = 



$1 K(P/F,7%,28) 









$1 K(0.1375) 



= 



$137.50 





Present Value 



= 



$2,624.60 



Appendix I Capital Replacement Costs, Alternative 2 113 



