Herbert Hoover Dike Rehabilitation Reach 1

The Herbert Hoover Dike, built around Lake Okeechobee, is listed as one of the nation’s dams in most need of repair and has been a US Army Corps of Engineers top priority since 2007. To date over 21 miles of cut off wall have been constructed in reach 1.

Task Order #3, 7 and 9

GFA International provided the quality control testing and inspections for the cutoff wall construction onTask Order #3 which included 16,900 feet; #7 included 16,795 feet and #9 for 2,450 feet of the wall.

The services provided by GFA consisted of:

  • Pre-placement cut off wall testing for permeability and compressive strength testing
  • Post placement testing of cut off wall materials for compressive permeability and compressive strength testing
  • Verification borings, GFA performed over 12,000 feet of verification borings on the cut off wall material
  • Compressive strength testing of cores from verification borings
  • Field permeability testing of boreholes in cut off wall materials
  • Optical televiewer (video recorder) imaging of cut off wall boreholes
  • Testing of embankment materials and aggregate surface roads
  • GPR survey of existing utilities
  • Environmental species monitoring

Task Order #5, 6 and 8

GFA further provided the quality control testing and inspections on Task Order #5 (20,050 feet), #6 (14,070 feet) and #8 (3,340 feet) for the cutoff wall construction.

Our services included:

  • Verification borings, GFA performed over 12,000 feet of verification on the cut off wall material in levee conditions
  • Compressive strength testing of cores from verification borings
  • Field permeability testing of boreholes in cut off wall materials
  • Optical televiewer (video recorder) imaging of cut off wall boreholes