Attach_2-_Statement_of_Work_for_Fence_Project_at_Kealia_Pond.pdf

STATEMENT OF WORK

(Fencing Project at Kealia Pond NWR, PR 0040226463)

(June 18, 2015)

1. GENERAL: This project will contribute to the building of a fence around the Kealia Pond National Wildlife Refuge. Kealia Pond NWR is home to two endangered waterbird species, The Hawaiian Coot ('alae ke'oke'o; Fulica a/ai) and the Hawaiian Stilt (ae'o;

Himantopus mexicanus knudseni). The refuge was created to protect these endangered species as well as migratory shorebirds and waterfowl that use the wetlands as wintering grounds. Historically the refuge did not have feral pigs (Sus scrofa) or Axis Deer (Axis axis). Inthe last five years pigs and deer have started to appear on the refuge and in the last year or two pigs have exploded to epidemic levels. Feral pigs eat and trample endangered bird nests, eggs, and young as well as destroy waterbird habitat by uprooting native plants and creating muddy wallows. The refuge contains 200-300 acres of upland habitat all of which are currently being impacted by feral pigs. Inaddition, the feral pigs are regularly impacting the perimeter of the larger pond and the entirety of the smaller wetland ponds. In total, pigs likely are impacting 300-400 acres of the 700 acres refuge.

In Hawaii the commonly accepted remedy for dealing with feral pigs and deer is exclusion. This project is to build an ungulate exclusion fence along the refuge boundary and then eradicate the pigs and deer from within the refuge.

2. DEFINITIONS: n/a

3. SCOPE: To ensure that waterbird habitats are fenced in priority order, a phased approached is being implemented. The attached map identifies two phases for the fencing of the refuge. The ultimate goal is to complete as much of the fence as possible given the funds available. The area to be fenced is flat and can be accessed with vehicles and equipment.

Bids are solicited to construct an ungulate proof fence according to the specs supplied.

The contractor will provide materials, labor and equipment for the construction of fence to exclude pigs and deer. Fences will consist of 75" woven "hogwire" with a strand of barbwire on the bottom to discourage pigs from squeezing underneath and one strand of barbwire 8" above the hogwire to discourage deer from jumping over. The fence is clipped to T-posts spaced at intervals of 8' or less and anchored by one or more shorter posts positioned at the lowest point between the T-posts. Woven wire "aprons" are also fastened to the bottom of the fence as needed to prevent pigs from squeezing underneath.

On occasion, it may be advantageous to utilize livestock panel for this purpose. All materials are bezonal coated including clips.

Part 1:MATERIALS

A. STEEL POSTS:

T-133 Galvanized T-posts; 9 feet length, Certified ASTM A702, Galvanizing per ASTM A 123, with anchor plate.

1. Type I, Style 1, T-section hot rolled or re-rolled rail steel, hot dipped galvanized, 118 inch thick, 1-3/8 inch wide, with studs for attaching wire not more than 3 inches apart.

2. Line posts minimum weight of 1.33 pounds per linear foot (T-133 post).

Section 02830

3. Anchor plates -minimum weight 0.67 pound, securely fastened to the post.

4. Posts which are bent, split, mushroomed, cracked, or twisted or have cracked, chipped or scratched coatings will not be used.

B. WOVEN WIRE:

High Tensile Steel Woven Wire Fabric (Fixed Knot), 17-75-6-12-112, Galfan, or Bezinal coating (95% zinc, 5% aluminum), 330 feet roll. 75 inches tall woven wire will consist of 17 horizontal line wires vertical stays and fixed knots spaced 6 inches apart.

Horizontal spacing is graduated with the bottom gaps being the narrowest. Must meet

ASTM 116

C. BARBED WIRE:

High Tensile Barbed Wire, 15-1/2 gauge, 4 point, Galfan or Bezinal coating.

D. FASTENERS (CLIPS):

Bezinal or galfan coating.Designed for fastening woven wire and barbed wire to posts.

11gauge wire.

E. CORNER/END POSTS:

3- 112 inches O.D. or larger Schedule 40 galvanized pipe, 10 feet length with cap.

F. BRACE ASSEMBLY

1-7/8 inches O.D. or larger Schedule 40 galvanized pipe, IO feet with hardware.

G. GATES

1. Gate: 14' wide, ranch gate, 52" high, aluminum, or two 7' wide gates

2. Hinge Post: use 3"end post

3. Lock Post: use 3" end post

4. Cover ranch gate with livestock panel, 4 ga, 4x4 mesh, galvanized

H. CONCRETE :

1. Job-mixed, maximum slump four (4) inches. Job mix in proportion of one-part cement, two-parts fine aggregate, three-parts course aggregate, using a minimum of six bags of cement per cubic yard.

2. Water content, maximum of 5'A4 gallons per bag cement, including water contained in aggregate.

3. Or use Quickrete or equivalent, mixed according to manufacturer 's instructions.

PART 2: EXECUTION

A. WOVEN WIRE:

1. Woven wire will be deployed with minimal damage to galvanized coating. Whenever possible, crews shall avoid stepping on the wire while handling the rolls.

2. Woven wire will be tensioned or stretched using a "come a long" (ratchet-belay) device and commercial stretcher bar.

3. Tension of the top wire shall be such that 10 pounds of pressure applied midway between posts shall cause no more than 6 inches of displacement from the straight line between the two adjacent posts. Stretch wire with a ratchet-belay device or other suitable equipment to ensure proper tension.

4. Woven wire shall be fastened on the outside section (knob side) of the T-post.

5. Top and bottom wires and at least 5 equally spaced interior wires will be secured to each T-post using clips or fasteners.

6. Installed woven wire shall lay vertically flat and uniform on T-posts and have no "bellies" over elevated terrain (e.g. high spots, hills) along the corridor.

7. Bottom wire shall be no more than 2 inches above the ground surface at any point.

8. Rolls of woven wire shall be joined together using "nico.press" sleeves or similar noncorrosive crimping system. Each strand will be crimped.

9. Ends of the woven wire shall be secured to the comer posts by taking one tum around the post and wrapping it around itself in a series of tight uniform turns. Wire ends shall be trimmed with a cutter. Each strand of the woven wire will be secured in this fashion.

When attaching woven wire to the end or terminal post, care must be taken to keep tensioned line from slacking while wires are cut and secured.

B. POSTS:

1. Erect within 2 inches of plumb, spaced no more than 8 feet apart. Install 40 to 45 posts per 330-foot roll, within 1-1/2 inches of centerline of current run. Posts must be driven at least 24 inches deep in soil substrate. Ifsoil above rock layer is less than 20 inches deep, rock below soil layer must be drilled so post can be driven to the required 24 inch depth.

2. Posts shall be driven into substrate so as to withstand 75 pounds vertical pull and any horizontal force that would cause the posts to be uprooted prior to being bent.

3. Posts shall be driven to a consistent depth so that the section of T-post showing above the top most wire will not vary more than 2 inches from post to post. Ifsubstrate prevents installation at the proper depth, the excess post will be trimmed off the top. The exposed bare metal will be sprayed with a cold galvanizing compound.

4. Posts shall be installed so studs will be oriented to allow the woven wire to be installed on outside of the posts. The posts shall be driven such that the face is parallel with the alignment and that the woven wire will lay flat and even.

5. Posts shall be installed no more than 6" into the refuge from the boundary line.

C. FASTENERS:

Type as recommended by manufacturer. Wire mesh shall be fastened to each post by the top and bottom wires and by at least 5 interior wires.

D. BARB WIRE

Barb wire shall be clipped to T posts 8" above the top of the hog wire.

E. CORNER AND END POST AND BRACE ASSEMBLIES

Comer and End posts will be 3-1/2 inches O.D. or larger Schedule 40 galvanized pipe set no less than 3 feet into the ground and reinforced with concrete. Each upright post will be braced with one or more 1-7/8 inches or larger galvanized pipes installed at an angle of 45 degrees, braced 4' off the ground. These will also be reinforced with concrete. Posts must remain plumb after tension is applied during woven wire installation.

F. GATES

Install typical aluminum ranch gate that is covered by livestock panel to make unit that is at least 75" tall. Panel must be installed so as not to allow pigs to crawl under the gate.

Refuge staff will direct the contractor as to where the final alignment of the fence and gates will be, as the map is meant to provide only a general overview of fence placement.

Refuge staff will mow and flag the footprint of the final fence alignment prior to fence construction.

G. CLEARING

In some locations the route for the fence line will need to be cleared of downed trees. The contractor will clear a 4 foot wide area and then install the fence on the edge of the cleared area closest to the Refuge boundary.

4. PLACE/DELIVERY AND PERIOD OF PERFORMANCE: The project shall be completed within 150 calendar days from issuance of notice to proceed. All work will be conducted at Kealia Pond NWR.

5. INSPECTION AND ACCEPTANCE: The project shall be considered completed following a thorough inspection by the Refuge Site Coordinator (contact information below). Ifthe fence does not meet the standards or specifications of the contract, the contractor will modify the fence to the specified requirements at the cost of the contractor.

6. GOVERNMENT FURNISHED EQUIPMENT OR

MATERIALS/INFORMATION: All material, labor, and equipment used to install the fence will be provided by the contractor. Clearing of the fence foot print, final say on fence alignment, and technical guidance will be provided by refuge staff.

7. AVAILABILITY: All work on the project will take place during normal business hours, Monday -Friday, 7am- 4pm. Work outside of these hours must be approved and arranged through the Refuge Site Coordinator.

8. TECHNICAL COORDINATORS:

Refuge Site Coordinator:

Calvin Willis Oahu/Maui National Wildlife Refuge Complex Mile 6 Mokulele Hwy Kihei, Hawai 'i 96753 Cell: 808-870-6450