The City of Casselberry experienced significant erosive damage within the Gee Creek and Howell Creek drainage basins as a result of Hurricane Ian. Enviro-Tech Systems, Inc. (ETS) completed this project to restore stormwater management infrastructure and remove debris at both locations.
Howell Creek Gabion Basket Replacement
The first location involved removing and replacing failing gabion baskets along Howell Creek behind the Carmel by the Lake Condominiums. The plans called for temporary and permanent sheet piling and floating turbidity barriers to allow sections of the creek to be dewatered. During construction, subsurface conditions prevented sheet pile from being successfully driven in certain areas, so the scope was adjusted to include the gabion baskets above the waterline. ETS removed the failing baskets, recovered useful material, constructed and filled new gabion baskets, and sodded disturbed areas of the creek bank.
Carriage Hill Outfall
The second location, adjacent to the Casselberry Greenway Trail, required ETS to use the active pedestrian trail to mobilize equipment and materials while maintaining public safety. ETS replaced a 30-inch mitered end section and concrete pad with a Type D inlet, a 30-inch FDOT U-Type endwall with energy dissipater and grates, and geoweb with filter fabric and riprap.
Because the structure was cast in place and tied into an existing storm drain, stormwater from the surrounding community was collected and redirected so work could be completed in dry conditions. ETS also graded the discharge area to stabilize ditch banks eroded by major storm events.
