(7) Preparation o£ the first draft of final report (usually 

 sent to the sponsoring agency for review and comment). 



(8) Preparation, publication, and distribution of the final 

 report. 



(9) Return remaining funds to the sponsor after completion 

 of the study. 



The cost of performing harbor model studies in which short -period 

 waves are the cause of concern varies from about $50,000 to $180,000 

 depending on the size of the model and the number of plans investigated. 

 Two typical studies completed at WES (September and November 1975) cost 

 $117,000 and $84,000. The model areas were 16,000 and 14,000 square 

 feet, respectively; operation times (after model construction) were 8 

 and 5 months, respectively. The total costs of performing the Vermilion 

 Harbor model study, conducted during August 1968 to July 1969, was 

 $70,000. The model area was 8,800 square feet and the operation time 

 was 6 months. The costs of operation and construction have increased 

 considerably since 1969. The estimated costs of the Vermilion Harbor 

 model study in 1976 are given in Table 4-10. Although the costs of 

 performing harbor wave action model studies have increased, the time 

 required to operate such models has decreased since an automated data 

 acquisition and control system has become available. 



Table 4-10. Estimated cost (1976) of Vermilion Harbor model study. 



Item 



Estimated time 



Estimated cost 



Preliminary model design, etc. 



2.0 wk 



$ 2,100 



Model design (final) 



1.0 mo 



4,200 



Model construction 



2.0 mo 



46,200 



Calibration of wave machine and wave gages 



1.0 wk 



1,600 



Model operation 



5.0 mo 



31,400 



Analysis of data and conference 



3.0 wk 



4,700 



Report (preparation and publication) 



6.0 mo 



6,300 



Total 



15.4 mo 



$96,500 



b. Harbor Wave Action Models, Intermediate- and Long-Period Waves . 

 The costs of conducting seiche-type model studies are greater than those 

 for short -period waves because: 



(a) Collection of the necessary prototype wave data is more 

 difficult and time consuming; 



(b) analysis of the prototype data (in a form that can 

 be used to design and operate the model and analyze the test 

 results) is more difficult and will normally require the use 

 of a computer; 



279 



