Site 1 Impoundment

This project is located in southwest Palm Beach County, approximately 20 miles due west of the City of Boca Raton. The project site is an 1,800-acre triangle of land located south and east of the Loxahatchee National Wildlife Refuge. The project site is bordered by the Hillsboro Canal to the south, the Central and Southern Florida Project L-40 Levee to the north, and the Lake Worth Drainage District’s E-1 Canal to the east.

The project included modifications to approximately 15,000-LF of the existing L-40. Construction activities included miscellaneous demolition, installation of temporary access bridge, vegetation clearing and grubbing, dewatering operations, borrow and disposal area operations, excavation and fill placement, construction of armored spillway (S-530), placement of erosion control measures that include soil cement and reinforced grass, installation of embankment instrumentation, construction of approximately 6-acre wildlife wetland area, and other miscellaneous embankment construction activities.

GFA Services

GFA provided various services including Well Decommissioning, Turbidity Monitoring, Quality Control Testing, and Vibration Monitoring.

  • Perform contractor Quality Control services for testing of materials in embankment, select fill, filter soils, soil bentonite, rip rap pursuant to project specifications
  • Perform contractor QC services for concrete, soil-cement materials
  • Provide Soil and Concrete certified technicians for testing and inspections of construction materials
  • Provide ACI certified Concrete Special Inspectors for the inspection of formworks, reinforcing placement pursuant to ACI codes