Attachment_1-_Performance_Work_Statement.pdf

Performance Work Statement Install Chain Link Security Fencing around Helispot

Project: Install Security Fencing around the Helispot Potential Bidders are encouraged to visit the helispot located near the Maintenance Compound at the Carolina Sandhills NWR before making their bid. To schedule an appointment, call Cliff Berger at 843-307-2345 between 7:00 am and 3:00 pm M-F to have an agency rep meet with you.

The helispot is located behind a locked gate.

Location coming from McBee: travel East on Hwy 1 and at the 2nd entrance to the refuge, turn left on Wildlife Drive. A quarter mile on right is a road with a yellow gate, turn right and follow road to a cleared area with a concrete pad. The area to be fenced is staked out at the corners.

1. General:

1.1 USFWS – Carolina Sandhills NWR, 23734 Hwy 1, McBee, South Carolina 29101.

Helispot 34° 30’32”N 80° 13’01”W

1.2 Contractor Qualifications: General Contracting proficient in fence installation

2. Period of Performance

2.1 Contract award – December 15, 2025.

2.2 Normal duty hours Monday thru Friday 6:00 a.m. - 4:30 p.m. In the event of emergencies, Contractor shall provide contact information.

2.3 Non-duty hours include week nights, weekends, and Government holidays.

3. Scope

3.1 Project

The Contractor will provide all labor, equipment and materials necessary to install the fencing and two vehicle gates according to the provisions contained herein and the specifications for chain link fencing systems. The work includes disposal of any waste material in a legally acceptable manner.

The fence will be approximately 1100 linear feet in total length (150ft. wide by 400 ft. long), nominally 84” tall topped with 3 strands of barbed wire. Fencing posts shall be spaced a maximum of 10’ apart. Please see drawing at end of statement of work.

Quote should be based on onsite inspection of area and contractor measurements based on the provided specifications of materials and construction. Proposals for this work will be evaluated for completeness, prior fence installation experience and cost.

Government will set corners and stake gate locations. Contractor is responsible for exact measurements by inspection from corner to corner before work commences. Contractor should notify government representative if there are discrepencies between government-marked corners and contractor measured distances.

4: PRODUCTS

4.1 FENCE FABRIC

A. Steel Fabric: Zinc coated galvanized steel chain link.

B. Selvage: Shall be twisted at the top and bottom, not knuckled.

4.2 FENCE FRAMING

A. Round Type II Steel: Cold formed and welded steel pipe. Zinc protective coating, minimum 3 mils thick.

B. Rails: Manufacturer’s longest lengths, minimum of 17 LF, with swedged-end or expansion-type coupling, approximately 6” long for joining. Provide rail ends or other means for attaching top rail securely to each gate post and fence post. Rails must not rotate.

4.3 GATES/ENTRYWAYS

A. Requirements: Gate frames shall be welded at corners. Gates assembled with corner fittings shall have adjustable truss rods of 3/8” minimum diameter on panels. Truss rods shall be of the same base metal and finish as the gate frame.

B. Double Swing arm vehicle gate: Two double swing arm gates for vehicular traffic shall be installed; one on the west end of the perimeter, aligned with the entry road and one on east end as marked on site. Stakes will mark gate locations. Fence fabric for the gates shall be identical to the material and finish as the rest of the fence. The frames of the gates shall match the material and finish as the framework of the fence itself. Fence openings for vehicular gates shall extend the entire width of the roadway.

1. Each double swing arm gate will consist of two 6ft panels.

2. Hinges: 180 degree outward swing

3. Latch: Permitting operation from both sides of gates with provision for padlocking accessible from both sides of gate.

4.4 BARBED MATERIAL

A. Barbed Wire Supporting Arms: Manufacturer’s standard barbed wire supporting arms, metal and finish to match fence framework, with provisions for anchorage to posts and for attaching 3 rows of barbed wire to each arm. Arms shall withstand 250 pounds downward pull at outermost end of arm without failure. Provide following type:

1. Single 35-degree arm for three strands of barbed wire, one for each corner post.

2. Single 45-degree arm for three strands of barbed wire, one for each line post.

B. Barbed Wire: Three-strand, 12.5 gauge steel wire with 14 gauge four point barbs spaced not more than 5” apart; metallic-coated finish to match fabric.

1. Galvanized Finish: chain link fence grade with Class 3 zinc coating.

4.5 FITTINGS AND ACCESSORIES

A. Material: Fabricate from hot-dip galvanized with a minimum of 1.2 oz/SF of zinc coating of surface area. Tie wires, clips, and hog rings shall withstand forming and twisting operations without cracking or flaking of the coating. If the zinc or aluminum can be removed after installation by rubbing with bare fingers, it will be rejected.

B. Post Caps: Shall be designed to fit snugly over posts and exclude moisture from inside the post when tubular posts are used.

C. Tension (Stretcher) Bars: Hot-dip galvanized steel with a minimum length of 2” or less than the full height of fabric and a zinc coating of 1.2 oz/SF minimum. Provide one bar for each gate and two for each corner post, except where fabric is integrally woven into the posts.

D. Tension and Brace Bands: Shall be pressed steel, hot-dip galvanized with a minimum zinc coating of 1.2 oz/SF.

E. Tension Wire: Shall be metallic-coated steel marcelled tension wire with zinc coating to match fabric.

F. Hog Rings: Shall be 12-gauge steel wire with a minimum of 0.8 oz/SF of zinc coating.

G. Tie Wires: Provide 9-gauge steel wire with 1.2 oz. zinc coating.

4.6 GROUND RODS AND ACCESSORIES

A. Material: Shall be ¾-inch copper rod, and length shall be 8 feet. Ground connection shall use minimum No. 4 solid copper conductor.

4.7 CONCRETE

A. Concrete for gate posts: Shall be minimum 28-day compressive strength of 3,000 psi.

5: EXECUTION

5.1 PREPARATION

A. Scheduling: Do not begin installation and erection before final grading is completed, unless otherwise permitted.

B. Excavation: Drill or hand-excavate holes using post-hole digger to diameters and spacings indicated, in firm, undisturbed or compacted soil.

1. Excavate holes for each post to minimum diameter recommended by fence manufacturer, but not less than four times the largest cross section of post.

2. Unless otherwise indicated, excavate hole depths approximately 3” lower than post bottom, with bottom of posts set not less than 36” below finish grade surface. Clear post holes of loose material.

5.2 CHAIN LINK FENCE FRAMING INSTALLATION

A. General: Construct and install fence to comply with manufacturer's written instructions.

B. Alignment: Set posts plumb, and align posts in holes 6” above bottom of excavation. Space a maximum of 10 feet center to center to the grades indicated. Locate a terminal post at each change in horizontal or vertical direction of 30 degrees or more.

C. Set Posts: Vibrate or tamp fill material for consolidation. Check each post for vertical, horizontal and top alignment.

D. Terminal Post Bracing:

1. Install horizontal pipe brace at mid-height on each side of terminal posts. Firmly attach with fittings.

2. Securely fasten diagonal braces to the terminal post and the adjacent line post or its footing or a footing of equal size. There shall be no more than a 50 degree angle between the brace and the ground. Securely fasten horizontal braces with truss rods to the adjacent line post and terminal posts.

E. Tension Wire: Provide tension wire at bottom of fabric. Install tension wire before stretching fabric and attach to each post with ties. The fasten the bottom tension wire within the bottom 6” of fabric. Securely fasten the tension wire to the corner and gate posts. The tension wire shall be taut and free of sag.

F. Top Rail: Support the top rail at each post so that a continuous brace from end to end of each stretch of fence is formed. Securely fasten the top rail to the corner and gate posts and join with sleeves or coupling to allow for expansion and contraction.

G. Tie Wires: Use wire of proper length to secure fabric firmly to posts and rails. Bend ends of wire to minimize hazard to persons or clothing.

H. Maximum Spacing: Tie fabric to line posts 12” center to center and to rails and braces 24” center to center.

I. Barbed Wire: Extend end members of gate frames above top member of gate to match the height of adjacent fence and prepare to receive the same number of strands as adjacent arms of fence posts. Pull taut to remove sag, firmly install it in the slots of the extension arms and secure

it. Provide necessary clips for securing wire to extensions.

J. Fasteners: Install nuts for tension bands and carriage bolts on the side of the fence opposite the fabric side. Peen ends of bolts or score threads to prevent removal of nuts.

K. Gate: Install gate plumb and level in a closed position, according to manufacturer's written instructions for full opening without interference. Install ground-set items in concrete for anchorage. Place concrete around posts and vibrate or tamp for consolidation. Extend concrete 2” above grade and trowel to a crown to shed water. Check each post for vertical, horizontal and top alignment, and hold in position during placement and finishing operations. Allow concrete to cure a minimum of 72 hours. Attach hardware by means that will prevent unauthorized removal. Peen as necessary. Adjust hardware for smooth operation and lubricate where necessary.

5.3 CHAIN LINK FENCE FABRIC INSTALLATION

A. Fabric:

1. Place chain-link fabric on the outside of the area enclosed.

2. Place the fabric by securing one end, applying sufficient tension to remove slack before making attachment elsewhere. Tighten the fabric to provide a smooth uniform appearance free from sag.

3. Cut the fabric by untwisting a picket and attach each span independently at terminal posts. Use stretcher bars with tension bands at maximum 15” intervals or other approved method of attachment.

4. Install fence fabric 1” above ground level. Fasten the fabric to the line posts at intervals not exceeding 15”. Fasten the fabric to the rail or tension wire at intervals not exceeding 24”.

5. Join rolls of wire fabric by weaving a single picket into the ends of the rolls to form a continuous mesh.

B. Tension (Stretcher) Bars: Thread through fabric and secure to end, corner, pull, or gate posts with tension bands spaced not over 15” center to center.

5.4 GROUNDING INSTALLATION

A. A typical ground rod installation adjacent to each corner post and at each gate post shall be used. Use 8 LF ground rod installation according to a manufacturer’s instruction.

B. Use copper conductor to connect from the posts to the ground rods as shown on the drawings.

The connection shall be made with inline crimp terminals and according to manufacturer’s instructions.

5.5 CLEANING

A. Clean up debris and unused material, and remove from the site.

6. Technical Coordinator:

6.1 Cliff Berger, Deputy Project Leader, 843-307-2345

Green (length) = 400 ft.

Purple (width)= 150 ft.

Blue distance from NW corner of helipad=50 ft.

Red distance from SW corner of helipad=80 ft.

Helipad dimensions= 20x20ft.

Yellow = 1100 linear ft. of perimeter fencing = drive thru gate locations