Civil Works Budget Details of the U.S. Army Corps of Engineers for Construction. Volume 2: SAD - SWD. Fiscal Year 2015.

摘要

DESCRIPTION: The Major Rehabilitation Report (MRR), approved in November 2000, divided the dike into 8 Reaches and included a detailed analysis of alternatives in Reach 1. The MRR proposed construction of a seepage/drainage berm along the landside toe of the dike for Reach 1. Following input from a variety of expert sources, the U.S. Army Corps of Engineers (Corps) convened an independent technical review panel to further evaluate the design of the proposed repairs, which were underway. After reviewing the findings of this panel, the Corps decided to fundamentally alter its plans for strengthening the HHD. The new design concept includes toe-ditch fill, cut-off wall at the center of the dike, and seepage berm. The former Reach by Reach approach has now been replaced with a system wide risk reduction approach as required for safety modifications to dams. This risk reduction strategy is being implemented by addressing the culvert structures as the first order of work while completing the ongoing Dam Safety Modification Study (DSMS) which includes the entire HHD system. The cutoff wall installation to address seepage and piping in Reach 1 between the cities of Port Mayaca and Belle Glade, Florida has been completed.