ESTIMATES OF FIRST COST 



66. /ill estimates have oeen prepared on the basis of 19^6 

 price levels, usin^ unit orices based on actual bid prices for 

 similar work in the region, vjith corrections to allow for the 

 size and Ciiaracter of the proposed plan. The total estimated 

 first cost of the Fo:-: Point barrier is Ol6,$00,QOO. Tables 5, 

 6 , and 7 sumiaarize the principal items of first cost; detailed 

 costs are given in Appendi:: F. The total e stl."iated first cost 

 of the Lover Bay barriers rarj^es from a lower limit of about 

 ;p69,00O,0OO to an upper limit of about ^109,000,000, depending 

 on Naval requirements, foundation conditions, and facilities 

 installed for pollution control and fis'ieries. The lov;er limit 

 mii^ht be I'laintained under optimum conditions, such as a "nigh 

 degree of foijndation stability and a minim'um of further cnanges 

 in design. The upper limit allows for larger foundation settle- 

 ment in the East barrier and includes provision for navigation 

 gates and possible sluice gates in the //est barrier. 



EoTIIlATES OF ANNUAL CHARGES 



67. Anjiual caarges are based on 2.5 percent interest on the 

 investment, amortized over a 50-year period, plus the estimated 

 costs of maintenance and oporation. The estimated annual charges 

 aro ..1)732,000 for the i.*'ox Point barrier. Annual charges for the 

 Lower Say barriers ranr^e from •,i;2,I?80,000 for the lower limit of 

 first cost to .>ii,l67,000 for the upper limit. Tables 5 , 6, 

 and 7 si-U7i;:;?jrizc the annual charges^ a detailed summary is given 

 ir Appendix F. • 



$7 



