TABLE F-6 



ESTH'IATED ANNUAL CHARGES - Minimum Amount 



(1956 Price Level) 



LOWER BAY BARRIERS - NARRAGANSETT BAY 



Federal Investment 



Total Federal First Cost ^,67,273,000 

 Interest during Construction 2,527^000 



$69,800,000 



Federal Annual Charges 



Interest on Federal Investment 



(2-1/2^) $ 1,7U2,000 



Amortization (50 years) 715,000 



Maintenance and Operation 



Quarry and Plant Maintenance % 5,000 



Embanlanent and General 140,000 



Concrete Features 2,000 



Gates & Machinery (Tiverton) 10,000 



57,000 

 Total Federal Annual Charges $2,5lU,000 



Non-Federal Investment 



Contributed Funds .f 1,617,000 



Lands and Damages 110,000 



Interest during Construction 65,000 



Total Non-Federal Investment I 1,792,000 



Non -Federal Annual Charges 



Interest on Non-Federal Invest- 

 ment (2-1/2^) $ U5,000 

 Amortization (50 years) 18,000 

 Estimated Tax Losses 3,000 

 Total Non-Federal Annual Charges ^ 66,000 



TOTAL ANNUAL CHARGES *.2, 580,000 



F-21 



