A04_Statement_of_Work_(SOW).pdf
PDF 5 MB Posted
- Attached to
- SC WACCAMAW NWR RICE TRUNKS REPAIR
- Solicitation number
- 140FC126R0004
About this file
This is a Scope of Work document for the Waccamaw National Wildlife Refuge Hasty Point Rice Trunk & Levee Project located at 773 Hasty Point Drive, Georgetown, SC 29440. The project addresses damage to a 43-acre wetland impoundment on Sandy Island caused by repeated flooding and hurricanes. Key work requirements include: (1) removing and replacing two 32-foot rice trunks—one at the northwest corner (50 feet west of the original location with new bulkheads) and one at the southwest corner (in the same original hole)—and installing a 32-foot spillway box at the east end of the center dike; (2) constructing bulkheads with Class I non-woven geotextile (Type 3NW), 25-foot pilings with 10-inch butts placed every 5 feet, sloppy-vee tongue-and-groove sheeting, 3"x12"x20' cribbing boards, and ¾-inch stainless steel cable ties; (3) repairing or constructing four tractor bridges by realigning support pilings and replacing decking on three existing bridges and constructing one new bridge (with the refuge providing decking boards, pilings, and hardware); (4) adding 24 inches of new dirt across 7,200 linear feet of dikes (16 feet average width); (5) mechanically removing all vegetation from 8,800 linear feet of interior canals (45-65 feet wide); (6) cleaning vegetation and sediment from outfall ditches of four water control structures; and (7) installing barge-tie pilings on both the mainland and impoundment sides of the river.
The contractor is responsible for mobilizing all equipment and materials via barge from the refuge shop on the mainland, removing old rice trunks, spillway box, and all scrap and debris, and restoring barge landings to original condition upon project completion. The refuge will provide the rice trunks, spillway box, and all bulkhead materials (pilings, sheeting, cribbing, and cable). Work cannot begin before February 9, 2025, and must be completed within 120 days. Contractor access to the site is available Monday through Sunday from 6:00 a.m. to 6:00 p.m. All labor must be guaranteed for at least two years. A pre-quote meeting will be scheduled at the site with point of contact Jason Hunnicutt at (843) 527-8069. Contractors are highly encouraged to visit the site to determine precise quantities of materials and trades required to complete the work.
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| File | Type | Posted |
|---|---|---|
| Sol_140FC126R0004.pdf | ||
| B03_General_Decision_Number_SC20260001.pdf |
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Text version
Waccamaw National Wildlife Refuge Hasty Point Rice Trunk & Levee Project
Worksite Address: 773 Hasty Point Drive, Georgetown, SC 29440
Scope of Work
Project Overview:
Sandy Island is a 10,000-acre freshwater island located between the Waccamaw and Great Pee Dee Rivers in Georgetown County, SC. Waccamaw NWR owns 240 acres of this island on the southwestern side, which is part of Hasty Point Plantation. There is a 43-acre wetland impoundment adjacent to the Great Pee Dee River that has suffered damage from recent hurricanes. Due to flood-stage water levels for many weeks at a time, the levees have suffered erosion, the bulkheads along the river need repairing and backfilling, 4 tractor bridges crossing the canals are damaged and need repairs, and three water control structures are not functioning properly and need to be replaced.
Additionally, with water levels during these flood events coming over the dikes, an influx of invasive plant species has infiltrated the canals around the impoundment. These plants are severely restricting waterflow and need to be mechanically removed. A pre-quote meeting will be scheduled before the quote deadline at Hasty Point Plantation to discuss details and allow time for contractors to gather measurements. The point of contact will be Jason Hunnicutt at (843) 527-8069.
Purpose:
Waccamaw NWR is committed to repairing damages to the dikes around a 43-acre waterfowl impoundment at Hasty Point Plantation due to repeated flooding and hurricanes. This includes the following: replacing 2 rice trunks and a spillway box, adding dirt to the top of all dikes around the impoundment, replacing rotten/broken boards and backfilling around bulkheads, repairing 4 tractor bridges, and mechanically removing invasive plant species in the canals around the impoundment.
Requirements:
Rice trunk #1 (Northwest corner of the impoundment) Remove the old rice trunk from the dike, fill in hole with dirt, and install a 20ft bulkhead on the inside of the dike and a 20ft bulkhead on the outside of the dike where the old trunk was. Install new 32ft rice trunk 50ft further west from the old trunk. The top of the trunk box must be placed 12-18” below the bed of the field. Construct new 20ft bulkheads over and adjacent to the trunk on the inside of impoundment and outside of impoundment.
Rice trunk #2 (Southwest corner of the impoundment) Remove the old rice trunk from the dike, prepare the same hole to install a new rice trunk in the same spot and install new 32ft rice trunk in the same hole as the old one was removed from. The top of the trunk box must be placed 12-18” below the bed of the field. Bulkheads on inside of impoundment and outside of impoundment needs to be constructed, finished, & secured in the same manner as they were with the old trunk.
Spillway Box (East end of center dike) Remove old spillway box from the dike and prepare the hole to install a new one in its place. Install a new 32ft spillway box in the center dike.
For all bulkheads, Class I, non-woven geotextile consistent with Type 3NW shall be placed between the headwall and exposed native soil before any backfill is placed.
Geotextile shall have a minimum overlap of 12” and be securely tacked to the headwalls using marine rated staples or other approved material. Any exposed ends of the fabric shall be trenched into the soil at least 6”, preferably 12”. Staple pattern shall conform to manufacturer’s recommendations. Pilings will be 25’ long and have a 10” butt and shall be driven until refusal and placed every 5ft. Bulkhead sheeting will consist of sloppy-vee tongue and groove boards. Cribbing boards will be 3”x12”x20’. Holes will be drilled through the sheeting and cribbing and ¾” stainless steel cable and cable clamps will be used to tie together pilings on each side of the dike before filling with dirt. (See Picture)
Tractor bridges: a total of 4 tractor bridges will need work. 3 of them will need the support pilings realigned to be more stable and the decking will need to be replaced.
The 4th bridge will need to be constructed and installed. The refuge will provide the decking boards, pilings, and hardware.
Both rice trunks and the spillway box will be provided by the refuge as well as all materials for bulkheads (pilings, sheeting, cribbing, and cable).
Install pilings on the mainland side of Hasty Point as well as the impoundment side across the river to tie the barge to for loading and unloading equipment and materials.
Clean out vegetation & sediment around and in the outfall ditches of 4 water control structures.
Add 24 inches of new dirt across the entire top of 7200 linear feet of dikes around the impoundment. Average width of the dikes is 16ft wide. Mechanically remove all vegetation in the interior canals. Length of canals is 8800 linear feet. Canal width ranges from 45-65ft wide.
The contractor shall be responsible for bringing all materials and equipment to the jobsite. This will include using a barge to move the equipment and materials. Rice trunks, spillway box, and other bulkhead materials will need to be moved from the refuge shop on the mainland side across the river using a barge. Contractor will be provided access to the site Monday – Sunday 6:00 a.m. to 6:00 p.m.
Work cannot begin before February 9th, 2025 and must be completed within 120 days.
Contractor shall be responsible for removing the old rice trunks, spillway box, all scrap, materials, & trash generated by this project.
The barge landings need to be restored to their original state once all equipment, old trunks, spillway box, and materials & trash are removed from the worksite.
All labor needs to be guaranteed for at least 2 years.
The contractor is highly encouraged to visit the site to determine the quantities of the materials and trades required to complete this work. Reference the Solicitation for full wording of the contract clauses pertaining to this requirement.
Tractor Bridge
Canals full of vegetation
Canals full of vegetation
Bulkhead & rice trunk #2 that is to be placed in same hole as the old one.
Barge landing and bulkhead that needs to be repaired.
Barge landing and bulkhead that needs to be repaired.
Levee and adjacent canal with vegetation.
Close-up photo of bulkhead at rice trunk #1
File details come from the government source that posted it. Updated .