October 2, 2013

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Lake Okeechobee Dike Rehabilitation Essential for Storm-Weary Florida

BOCA RATON - Geosyntec is pleased to announce that it is part of the successful Bauer Foundation Corp. team selected for construction of a 3-mile segment of the Seepage Cutoff Wall, part of the U.S. Army Corps of Engineers' Herbert Hoover Dike (HHD) Rehabilitation project to stabilize and secure the aging Herbert Hoover Dike. Geosyntec will develop specialized work plans, coordinate local and state permitting, and perform quality control and environmental monitoring tasks for the HHD project, one of the three major federally-funded dam programs in the country.

The HHD project is designed to add redundancy and resiliency to the dike from potentially damaging severe weather events, and protect the numerous residents and businesses on the southeastern rim of Lake Okeechobee. The cutoff wall, a critical design feature in the dike rehabilitation, will stop existing internal erosion, known as "piping," and prevent futher damage to the internal structure of the dike. The first section of wall will be built from Port Mayaca south to Belle Glade, a 22-mile stretch that is considered the most vulnerable section of the 143-mile dike.

Geosyntec's role is to develop specialized work plans; coordinate local and state permitting of the construction activities; manage the USACE Quality Control System (QCS); develop and implement project environmental monitoring program; provide technical guidance during the cutoff wall mix design; monitor the field and laboratory quality control testing program; and manage all aspects of the CQC program for the USACE. The largest and most complex of Geosyntec's responsibilities is the daily administration of the construction QCS requiring full time presence on site, detailed documentation and thorough interaction between the USACE, Bauer Foundation Corp., and the numerous subcontractors involved in the project.

During the initial stages of the project, Geosyntec has been instrumental is expediting the issuance of several permits including those issued by the Florida Department of Environmental Protection (FDEP) and South Florida Water Management District (SFWMD) pertaining to Stormwater control, consumptive water use and fugitive air emissions.

In 2007, the USACE placed the HHD on the Top 6 list of dams in the nation needing repair. The Jacksonville District prioritized rehabilitation of segments that were identified as most vulnerable, focusing initial efforts to achieve the most significant impacts. The HHD Cutoff Wall will be completed in three distinct phases beginning in July 2008 and planned for completion in early 2010. Phase 1 will include the construction and testing of a 500-foot demonstration section followed by Phase 2 (12,000 linear foot section) and Phase 3 (4,000 linear foot section). Each phase of the cutoff wall installation will be constructed using BFC's Hydraulic Excavator and approved Cutter-Soil-Mix (CSM) technique which meets rigorous engineering standards.