Water Control Structure L-4 Rehabilitation - Change Order 1

Emergency Repair of Unforeseen Condition

Divert the Belleaire/Royal Palm Waterways through weir structures at B-1, B-2, and B-3

Dewater the area adjacent to L-4 Weir with sheet piles

Determine the nature and extent of the problem

Decide on a course of action and repair the unforeseen condition

Repair the unforeseen condition Restore the flow ways of the Belleaire/Royal

Palms Waterways Rebuild the weir structures at B-1, B-2 and B-3

Scope of Work

Divert the Royal Palms and Belleaire Waterways through the weir structures at B-1, B-2 and B-3.

Determining the extent of the unforeseen conditions

Three dimensional modeling indicated that the void had a volume of approximately 110 cubic yards

Filling the void with 110 cubic yards of flowable fill through 19 - 6 inch holes that were drilled in the weir deck