MANUKA NAR KAUPOKU PROJECT FENCE INSTALLATION 2026

Invitation for Bid
MANUKA NATURAL AREA RESERVE KAUPOKU PROJECT FENCE INSTALLATION
2026
OVERVIEW
The State of Hawaii's Division of Forestry and Wildlife (DOFAW) is seeking bids for constructing an
ungulate-proof fence at the Manuka Natural Area Reserve (NAR), as well as associated tasks such as
clearing the fence corridor and fabricating and installing step-over and step-through gates. The
successful bidder will enter a contract with the State of Hawaii from which fence projects will be
executed with a State of Hawaii Purchase Order (PO).
This project will encompass roughly 3.55 miles of fenceline; roughly 3 miles or 15800 ft of new fence
construction, and .55 miles or 3,000 ft of fence will be replaced and updated.
Bidder shall provide Bid Security in acceptable form pursuant to HRS 103D-323 and HAR 3-122-222.
Bid Security must be submitted BERORE Offer Due Date & Time.
The bidder will also provide a performance bond and a payment bond for each project to ensure
completion of all projects to the specifications herein and payment of any materials, or labor debts.
Manuka Kaupoku Project Pre-Bid Conference: There will be a voluntary pre-bid conferences for the
Manuka Kaupoku project so that there is ample time for contractors to view project and ask questions.
Meeting will take place on Wednesday, June 24th. We will meet 9:00 AM at the Manuka State Park and
drive up to the work site from there. Please have sturdy hiking shoes and bring drinking water. Be
prepared for hot and/or rainy weather and mosquitoes.
As a courtesy, please contact the Contract Administrator at least one day prior to the meeting if you
would like to participate. Bidders are strongly advised to inspect the general fencing area prior to
submitting a proposal. Forest habitat can be examined by doing a "fly-over" of the fence installation site
at the bidder's expense. Geographic Information System (GIS) shapefiles as well as maps of the fence
route are also available for review by contacting the Contract Administrator. Topographic and logistic
conditions present difficulties that are not typical for fence installation projects. Failure to visit the work
area/installation site will in no way relieve the successful bidder from completion of the work in
accordance with the specifications, terms and conditions herein to the satisfaction of the Contracting
Officer's Representative.
Schedule of Key Dates: The schedule below represents DOFAW's best estimate of the schedule. If a
component of this schedule is delayed, the rest of the schedule will be adjusted accordingly.
Deadline to Submit Written Inquiries Wednesday June 24th
Voluntary Pre-Bid Conference (Manuka Kaupoku Project) Wednesday June 24th
DOFAW's Response to Written Questions Wednesday July 1st
Deadline to Submit Bid* Wednesday July 15th
*Offers must be submitted through the State of Hawaii eProcurement (HIePRO) system
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Figure 1 Manuka NAR Kaupoku Project Fence Sections
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SCOPE OF WORK
The objective is to protect and preserve approximately 3500 acres (ac) in Manuka Natural Area Reserve
of irreplaceable watershed, unique native ecosystem, and the rare and endangered species it supports.
The project area is owned by the State of Hawaii and managed by DOFAW.
Approximately 3.55 miles or 19,000 linear feet (LF) of fences will be constructed in the following sections
within Manuka NAR:
Table 1. Summary of Manuka Natural Area Reserve Fence Project Sections
Segment Estimated Length (LF) Access
Sleepy Dozer Roadside 9200 4wd access
Sleepy Dozer Backcountry 6500 Remote / hiking
Kapua Roadside Replacement 1200 4wd access
Kapua Backcountry Replacement 2100 Remote / hiking
Sleepy Dozer Roadside- New fence construction along a newly dozed and/or widen road. Minimal
vegetation clearing will be necessary.
Sleepy Dozer Backcountry- New fence construction in a mixed closed forest canopy and scattered
canopy forest. Vegetation clearing required.
Kapua Roadside Replacement- Replacement of existing fenceline along roadway. Minimal clearing
required.
Kapua Backcountry Replacement- Replacement of existing fenceline along trail. Fence corridor currently
open, some vegetation clearing will be required.
Minor changes in the fence alignment may be made due to terrain or avoidance of sensitive features,
such as the identification of Endangered plants and/or archaeological features. The State reserves the
right to purchase larger or smaller quantities at the per linear foot price quoted on the OFFER FORM
page.
Minimum Qualifications:
To be considered for this contract award, an Offeror must meet the following minimum qualifications:
1. Licensed Contractor (and subcontractors) [in accordance with Chapter 222, Hawaii Revised Statutes;
Title 16, Chapter 77 Hawaii Administrative Rules; and statutes amendatory thereto]. Due to the
nature of work contemplated, bidders must possess a valid state Contractor's license, classification
C-32 and/or A.
2. Must be familiar with installation of ungulate-proof fencing in remote areas with rough lava terrain
and have had related project experience in Hawaii. Offeror shall provide in their proposal a
description of and references from at least two (2) feral-ungulate-proof (e.g. pig, goat, sheep or
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deer) fence installation projects in remote areas with no roads (requiring helicopter transport of
materials and/or crews) and rough, undisturbed lava terrain in the State of Hawaii of at least 16,000
LF each.
Access:
Access to the fencing sites is by four-wheel drive access road, helicopter, or by foot.
The Contractor shall be responsible for transporting all required fence materials, work crew and
equipment to the installation sites. DOFAW will not provide any helicopter transport for the
contractor's crew and material. The Contractor shall coordinate its work schedules, timing and other
relevant communications directly with the Helicopter Contractor; however, the State's project
coordinator shall be notified at least 5 days in advance of proposed work and flight schedules and
included in pertinent communications affecting the project. The Contractor must complete full walk
through with State representative prior to commencing. The contractor must obtain all necessary
landing permits prior to commencing work. Landing permits are applied for through the DOFAW Hilo
office, 19 East Kawili Street, Hilo, HI. All permits must include a schedule of work and list the contractor
staff working on the project at the time.
The Contractor is advised that this project occurs within the hunting unit K in Manuka NAR. During
hunting days, it is advised that the contractor take all precautions necessary to avoid conflicts with
hunters and to advertise their presence in the area including wearing hunter orange colors.
The specific areas of the project can be accessed by different modes of transportation. The primary
access road goes through private land adjacent to Manuka NAR. The contractor is responsible for
contacting and coordinating with adjacent landowners if they desire to use their access roads that may
help with the project.
Keys will be needed to get through locked gates. The keys can be checked out from the Division of
Forestry and Wildlife Hilo Branch Office. DOFAW staff will need to know dates of access and a deposit
for keys will be required.
Terrain:
Within the project area of Manuka NAR, the forest is characterized as mesic/dry forest dominated by
large stature ohia lehua, a diversity of native understory tree species including but not limited to kopiko,
olopua, papala kepau, kolea lau lii, and scattered native groundcover such as hapuu, ieie, and uluhe
patches and other grasses, herbs and shrubs. Many non-native weeds, such as bleeding heart, christmas
berry, blackberry, hyptis, and desmodium vines are common as well. Sections of the project area are in
deeper soil kipukas, while others cross pioneer vegetation on rough aa lava flows. Generally the deeper
soil kipukas are heavily vegetated, while younger flows are more sparsely vegetated.
Weather:
Weather conditions at the fence site are at times extreme and may change rapidly. Therefore, the work
activity is weather contingent, and the Contractor must have a flexible schedule and be able to respond
when weather conditions allow access.
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Materials:
DOFAW will supply the following materials of the following specifications to complete fence installation,
including:
o 75" Woven Wire: 1775-6-12.5: 330-ft roll X 75" high tensile steel woven Bezinal or Galfan coated
longlife or "X" knot hog wire fabric or equivalent
o Apron: 832-6-12.5, 32" high tensile steel woven hinge lock hog wire fabric, Bezinal coated
o T-133 galvanized steel posts: T-133 posts, 8.5 feet in length. Certified ASTM RR-F-221/3A.
Galvanizing per ASTM 123, with anchor plate
o Galvanized pipe for corner posts, anchors, in-line braces and/or line bosses will be a minimum 2
7/8" outside diameter (OD). Galvanized pipe for brace rails will be a minimum 2 3/8" OD and
10.5" long. Galvanized pipe for vehicle gate hinge posts will be a minimum of 3" OD.
o Pipe Caps: Galvanized 2-7/8" pipe caps
o H-brace Hardware: 2-7/8" Arrow Bracket Set
o High Five Corral Panel: at this point no corral panel sections are presumed necessary, but panels
will be provided for steep sections as required by contractor.
o Fasteners: Clips, Bezinal coated. Minimum 11-gauge. 7 per T-post per panel
o Pins: Concrete forming pins, 5/8" X 5/8" X various lengths (determined by substrate)
o Smooth wire: 9-gauge straight wire Bezinal coated
o Hog rings: 9 gauge, Bezinal coated
o Pedestrian Gates: (14) 4' pedestrian gates
o Vehicle Gates: (2) 16' double-gate vehicle access points. These are to be covered with High Five
Corral Panel across their entire surface.
All fence materials purchased by the State will remain the property of the State. Following completion
of the fence installation project, the contractor will pick up any excess fence materials not required for
the project and return it to identified material depot(s). The Contractor is responsible for providing
other materials including but not limited to materials for gates and step overs.
The state contractor administrator will ensure materials are delivered to 1 or 2 pre-set locations along
the fence corridor. From there, the bidder is responsible for transporting all materials to the sites, labor
to construct the fence, and any necessary clearing of vegetation along the fence corridors.
Equipment:
The Contractor shall be responsible for the provision of the necessary installation equipment, supplies,
tools, and all labor required to install fencing as specified herein. The Contractor shall be responsible to
provide their own transportation of all materials, crews, equipment and supplies to the site.
Contractor is advised that DOFAW shall not supply communications equipment. The Contractor is advised
that DOFAW shall not supply personal protective equipment (PPE) for use when working in or around
helicopters.
The Contractor may not use the DOFAW base yard as an office or staging area; for storage of tools,
supplies, equipment, or other materials; or for overnight vehicle parking.
Site preparation:
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The fence corridor will be delineated and flagged by DOFAW. The Contractor shall be responsible for
brushing a fence corridor; fence construction and post construction clean up. It is recognized that for
installation purposes the contractor may choose to shift the flagged alignment slightly. The fence
alignment may need adjusting prior to and/or during corridor clearing, and only after consultation with
DOFAW. Upon approval, the Contractor may re-align the fence to straighten alignments, to adjust
corners, to avoid certain trees and shrubs, to avoid any rare plants or potential archaeological
structures. Known rare plants and archeological structures are flagged with blue and orange flagging,
and should not be brushed, cleared, or removed. The Contractor shall be responsible for brushing
(removing) some vegetation on either side of the final or corrected fence alignment (no more than ten
feet total) as the fence shall be constructed at the midpoint. This may include some shrubs, ferns and
both non-native and native vegetation. Brushing of plants along the fence corridor should only remove
those plants that may hinder fence construction or future fence inspections, such as potential
overhangs, unless it has been determined that the tree is an endangered species (State has flagged
around any endangered species with blue and orange flagging). Note that it is not necessary to remove
all vegetation. In addition, cutting or brushing large healthy native trees shall be avoided as much as
possible. Any native trees that are taller than 5 and/or 6" in diameter, may not be cleared. Any native
trees, especially ohia, that are cut or limbed must be sprayed with spectracide to close wound. Hand
clearing is required unless there is pre-approval for the Contractor to use small equipment to brush the
fence corridor.
There is one (1) known archaeological site, a historical trail, within the fencing corridor, which is flagged
with blue and orange flagging. If additional archeological sites are found they will be flagged and must
be avoided. If the Contractor finds bones or cultural artifacts at any time during site preparation or
installation, work must immediately cease and DOFAW notified immediately. The entire fence line is
within endangered species habitat and thus extreme caution must be used during clearing and
installation of all phases of the fence line. The State has conducted biological surveys and has flagged all
known rare species locations. Contractor will be responsible for not damaging those resources. All
human litter and waste must be removed from the site at all stages of fence line installation.
Camping:
All camping permits must be in hand prior to the commencement of work. Camps along the fence line
will be permitted subject to approval in advance by the Hawaii Island District DOFAW office in
accordance with standard guidelines for camping by permit only in Reserves. DOFAW staff will
coordinate with the Contractor on appropriate camping locations. The contractor will need to make
arrangements with DOFAW staff to use nearby cabins or camp at remote campsites along the fenceline.
Contact information will be provided to the contractor.
Native and Alien Plants and Animals:
The purpose of this project is to fence valuable watershed and important habitat with high conservation
value. Plants or animals may not be removed from the fencing sites. The Contractor will implement
precautions to prevent the introduction of alien plants, animals and insects. Boots, equipment and
materials will be cleaned and inspected by the Contractor for seeds, eggs, larvae, etc., all equipment and
personal belongings must be treated to prevent the transmission of Rapid Ohia Death (ROD), Little Fire
Ants and Coqui frogs. The Contractor will also take precautions to prevent spreading alien plants already
found at the fencing sites. For Contractors arriving from other islands, contractors must perform these
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tasks prior to transporting your equipment and personal gear to Hawaii. The Contractor will not store
materials prior to material drops in areas known to contain ROD, Little Fire Ants, Coqui, etc. The
Contract Administrator reserves the right to inspect all gear prior to deployment to ensure cleanliness.
The Contractor will remove all food, refuse (including human feces), tools, gear, and installation scrap
upon completion of work at each fencing site. Extra fence material may be left at the site (during project
activity), panels discreetly attached upright to existing fence, t-posts bundled on the inside of fence
area, skirting on the inside of fenced area, and all excess material should be stored away from fissures or
ridges. Excess material may be left if requested and approved by DOFAW.
Communication:
DOFAW recognizes that the contractor may not work on the job continuously from start to finish. At the
same time, DOFAW has management responsibilities that must be coordinated around the fence
installation schedule. Thus, contractor shall notify DOFAW at least five (5) days in advance whenever
work at the job site is planned to begin and shall notify DOFAW within three (3) days of leaving the job
site if the contractor plans to be away for more than one (1) week. All camping and landing permits
must be acquired at the Hilo DOFAW Office prior to the commencement of work.
Project Completion:
The Contractor will remove all scrap (e.g., wire mesh, smooth wire, damaged posts, and discarded
spades), tools, and trash. Surplus materials such as fence posts or pipe will be arranged neatly at
marked material cache locations along the fence line identified by DOFAW. Final payment will not be
made until confirmation of scrap, trash and tool removal and surplus material has been organized at
caches
MANUKA KAUPOKU FENCE PROJECT SPECIFICATIONS
1. General
The purpose of this fence is to enclose a portion of the NAR to exclude sheep, goats, pigs and feral
cattle. The following specifications are necessary to ensure the fence prevents ungulates from entering
the area enclosed by the fence and to minimize long-term maintenance. The fence will be carefully
inspected and approved by DLNR staff prior to all payments to the Contractor to ensure that the
following specifications are met.
The wire mesh will be a minimum of 75 inches high, measured perpendicular from the ground surface
and attached to the outside of the galvanized steel pipe and T-posts using fence clips or 9-gauge smooth
wire. Open areas of the fence will use 75" woven wire. In closed forest settings the contractor may use
either 75" wire or 48" wire with 32" woven wire attached on top throughout fence sections. ALL high
and low points need to have a post. There will be an H-brace installed every 660 feet and a line boss (2
7/8" OD) installed every 330 feet. All vertical pipe will be secured with appropriate braces. Line bosses
and corner posts on fence line turns of 30 degrees or greater will be supported by H-braces. Single
braces may be set perpendicular to the inside of line turns less than 30 degrees. Anchors and/or wire
mesh skirting will be used in areas of uneven or rocky ground and secured with anchors or pins. To
ensure that the fence excludes ungulates, the bottom of the woven wire will ideally be flush to the
ground. If the contractor has an alternate means of securing skirting, then consultation should be
provided to the Contract Administrator.
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2. Posts (Pipe and T-Posts)
Posts and t-posts will be drilled and driven into drilled holes and tamped, if necessary, securely enough
to withstand 250 pounds of vertical pull and any horizontal force that would cause the posts to be
uprooted prior to being bent. All posts will be installed within 5 degrees (or two [2"] inches) of plumb. T-
posts will be placed within three (3") inches of a center-line drawn between the pipe corner posts.
Standing trees or logs may not be used as fence posts.
Pipe Posts - A capped galvanized pipe post will be used at any point the fence makes a change in direction.
Corner posts will be ten (10') ft sections of 2 7/8" OD galvanized pipe with H-brace-type support, or a
comparable alternative (see picture below of bracket set). Corner posts will be driven to a minimum depth
of thirty-six (36") inches. Vehicle gate hinge posts will be of 3" outside diameter galvanized pipe. They can
be braced to pipe of 2 7/8" OD according to H-brace specification but horizontal brace pipe should be
welded vs. attached with hardware for vehicle gate braces (see gate diagram). On segments on slopes,
pipe should be installed perpendicular to the terrain.
Pipe posts (2 7/8" OD) and braces also will be installed at abrupt changes in slope along the fence line to
allow the wire mesh fabric to be cut and oriented as smaller panels that better conform to the topography.
These pipes will be braced on one side using a 2-point H-brace (described in section 3). In areas where
the fence makes long, straight runs on level ground, line bosses (2 7/8" OD) supported by 2-point H-braces
will be installed every 330 feet, as in-line braces at appropriate locations to reinforce the T-posts.
T-Posts - T-posts will be spaced no more than 8 feet apart and closer when terrain dictates. T-posts will
be installed at ALL high and low points along the corridor to prevent the wire from "bellying." T-posts
shall be driven to a minimum depth of 24 inches. The T-posts shall be driven by use of a tubular post
driver or driving cap in a manner that will prevent damage to the posts. Where posts are to be installed
in solid rock, the spade anchors may be removed so that posts fit tightly in drilled hole. All cuts will be
sprayed with a cold galvanizing paint. T-posts shall be driven perpendicular to the slope of the terrain so
that the height of the fence is not compromised over steep terrain sections. T-posts at low points should
be driven deep enough to prevent them from being pulled up when tension is applied to the wire mesh.
If a post does pull out, hanging rocks or other weights from the wire is NOT an acceptable means of re-
anchoring the post. Posts which are bent, split, mushroomed, cracked, twisted or have cracked, chipped,
or scratched coatings will not be used.
3. Braces
Any point where the fence changes direction is considered a corner and the appropriate brace structure
will be installed to support the corner post. Unless prevented by terrain, all braces will be the H-brace
type consisting of one or more vertical anchor posts located near the corner posts and connected to it
by brace rails and/or tensioned wire/cable. Pipe used to construct braces will be a minimum 2 7/8" OD
for anchor posts and 2 3/8" OD for brace rails. To provide a solid brace, the anchor and corner posts
shall be placed no closer to each other than 1 12 times the height of the fence (roughly 9ft). A single H-
brace will be installed every 660 feet on any distance pulls of 660 feet or greater. Line bosses and
corner posts on fence line turns of 30 degrees or greater will be supported by H-braces. Anchor posts
will be driven to a minimum depth of thirty-six (36") inches. To prevent water collection, caps will be
affixed to all posts. All cuts will be painted or sprayed with a cold galvanizing paint.
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Pedestrian Gates - In areas where a pedestrian gate is to be installed, the gate will be braced in two
directions on hinge side, one to the vertical pipes of an H-brace, the other perpendicular to the hinge
side upright of the gate. The perpendicular brace pipe will be set on the inside of the fence. The
pedestrian gate consists of a 2 3/8" pipe frame. See "Gates & Step Over" section for an example.
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Pedestrian gate with appropriate
braces in place
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