Table 32 (Concluded) 



Date(s) Construction and Rehabilitation History 



1979 During Hurricane Frederick (September 12) approximately 50 ft of 



material flanking the weir was lost, forming a channel between the 

 weir and the beach. Three sections of the concrete sheetpiling were 

 dislodged. Dredged materials were used to close the breach and as 

 beach fill to the east of the weir. 



1980- A survey of the east jetty rubble-mound section (seaward of the 

 1981 weir) in February showed substantial loss of material (with respect 

 to the design section) on two sections, the landward 175 ft and a 

 150-ft section centered 100 ft behind the seaward end. Crest eleva- 

 tions on the landward section ranged from +1 to +2 ft mlw. On the 

 seaward section the crest elevations ranged from -1 to +5.5 ft mlw. 

 (The majority of material in this section was missing from the sea- 

 ward side slope.) The remaining sections were from +4 to +6 ft mlw. 

 In 1981 the jetty was rehabilitated, and in addition a rubble-mound 

 section 200 ft long was added to the then existing landward end of 

 the sheet-pile weir (centered approximately 300 ft from the original 

 landward end of the 1,000-ft weir section). The repairs brought the 

 jetty up to the existing cross-section geometry using 5- to 10-ton 

 cover stone on the transition and head sections. (Although the ori- 

 ginal design called for 5- to 12-ton and 12- to 16-ton cover stone 

 on these sections, smaller stone was used to fill in void spaces and 

 provide better interlocking.) Cover stone (3- to 5-tons) was used 

 on the trunk section. The rubble-mound weir modification design 

 section was Identical to the east jetty trunk design section. 



1985 The jetties are presently in good condition. 



(Sheet 3 of 3) 

 104 



