Attachment_1-_PWS_BAFS_Riparian_Restoration_and_Expand_Native_Plant_Nursery_08082017.pdf

PERFORMANCE WORK STATEMENT (PWS)

FOR

RIPARIAN ENHANCEMENT

AT

BELLOWS AIR FORCE STATION (BAFS)

8 August 2017

PERFORMANCE WORK STATEMENT (PWS)

MGT HABITAT RIPARIAN ENHANCEMENT (BFMV177301)

RESTORE RIPARIAN HABITAT ALONG PŪHĀ STREAM EXPAND HAWAIIAN NATIVE PLANT NURSERY AND

AT

BELLOWS AIR FORCE STATION (BAFS), WAIMĀNALO, HAWAI‘I

1. OBJECTIVES

The purpose of the project is to restore the riparian habitat along a portion of Pūhā stream at Bellows Air Force Station (BAFS) with Hawaiian native trees, shrubs and groundcovers that will provide stream bank stability, soil conservation, ecologically healthy (biodiverse) riparian habitat, shade, and habitat to support Hawaiian native wetland birds with foraging, roosting and breeding habitat. The tasks also includes expansion of the BAFS Hawaiian Plant Nursery.

The tasks described in this Performance Work Statement (PWS) are to expand the BAFS native plant nursery and restore riparian habitat along Pūhā stream.

2. SITE DESCRIPTION

The riparian restoration site is located along Pūhā stream on the west side of Pu‘ewai wetlands and extends further west to a Marine Corps Training Area (MCTAB) bridge. The native plant nursery site is located in the BAFS civil engineering compound.

See Section 14 ATTACHMENTS, for listing of tables, maps, and pictures.

3. PROJECT MANAGEMENT, PLANNING, AND REPORTING REQUIREMENTS

The Contractor shall supply all necessary supervision, labor, equipment, vehicles and materials necessary to accomplish the work. The Contractor shall perform management and planning functions, including performance measurement and fund status reporting, through the course of this effort. The Contractor shall document the results of the project efforts under this PWS for government review and approval. The contractor shall perform all work in accordance with federal, state, and local statues and regulations. Remedies shall conform to environmental permits, decision documents, or other legal requirements.

Within ten (10) business days of award, the contractor shall provide the Contracting Officer (CO) a written list of all personnel, including site supervisors, support staff, quality assurance inspector(s), laborers, technicians, drivers, etc., who shall be responsible for the performance of the required work and require BAFS access.

3.1. Meetings

3.1.1. Meetings/Teleconference Support. The Contractor shall attend and/or support meetings and teleconferences as required by the Contracting Officer’s Representative (COR). The purpose of the meetings includes, but is not limited to, contract discussions, progress reviews, project scoping, planning, project status, and the general exchange of information concerning current activities.

3.1.2. Kick-Off Meeting. This PWS provides for activities required for the BAFS on-site kick-off meeting. The contractor will present a Work Plan (described below) that will include a brief description of activities to fulfill the required tasks and finalized schedule.

3.2. Planning Documents, Reports, and Deliverables

3.2.1. Work Plan. Contractor shall prepare a work plan (WP) that will include a brief description of activities of the required tasks and finalized schedule. The WP shall describe in detail the approach, methodologies, quality assurance, quality control, and other technical activities that shall be implemented to ensure that a quality project is completed.

The work plan will include an out-planting landscape drawing. The landscape design drawing will show the layout of the out-plantings.

The draft WP shall be submitted to the SCONS CO for review within ten (10) business days of contract award. The Contractor shall revise the draft WP as necessary based on all review comments received and submit a final WP within five (5) business days of receipt of review comments. The final WP shall be submitted electronically (in both Microsoft Word and PDF formats) and as one (1) hard copy to the SCONS CO.

The WP must be approved by the COR prior to the commencement of the fieldwork. All work shall be conducted in accordance with the approved PWS.

3.2.2. Safety and Health Program. The Contractor shall develop and implement a written

Safety and Health Program in accordance with guidelines specified in USACE EM 385-1-1 Safety and Health Requirements Manual. The program will include a Site Safety and Health Plan and Accident Prevention Plan.

A draft Safety and Health Program shall be submitted electronically to the SCONS CO within ten (10) business days of contract award. The Contractor shall revise these plans as necessary and submit a final Safety and Health Program within five (5) business days of receipt of SCONS review comments. The final Safety and Health Program shall be submitted to the SCONS CO both electronically (in both Microsoft Word and PDF formats) and as one (1) copies.

The Contractor shall ensure that its subcontractors, suppliers, and support personnel follow all safety and health provisions established in the approved Safety and Health Program for the site. The SCONS CO reserves the right to stop work under this contract for any safety violations at no additional cost to the Government. The SCONS COR will verify that the Contractor has implemented corrective action before allowing continued performance under the contract.

3.2.3. Pesticide Discharge Management Plan (PDMP). In the event of herbicide use, submit/implement PDMP in accordance with Hawaii Administrative Rules (HAR), Chapter 11-55, Appendix M, Section 5 within ten (10) business days of contract award.

3.2.4. Monthly Status Reporting. The Contractor shall submit no later than five (5) business days from end of the report month (unless otherwise specified) status reports summarizing all activities conducted under this contract. The monthly reports shall be used to review and evaluate the overall progress of the projects, along with any existing or potential problem areas. The monthly status reports shall be submitted electronically.

The monthly reports shall include:

3.2.4.1. Summary of the events that occurred during the reporting period

3.2.4.2. Discussion of performance, identification of problems, proposed solutions, corrective actions taken

3.2.4.3. Description of outstanding issues

3.2.4.4. Project schedule status

3.2.5. Hazardous Materials. The Contractor shall handle all hazardous materials in accordance with applicable federal, state, and local requirements. The Contractor shall provide a listing of hazardous chemicals/materials and estimated usage (quantities) to BAFS EPM for any material requiring a Safety Data Sheet (MSDS) and brought or used on station.

3.2.6. Solid and Hazardous Waste Activities. The Contractor shall handle all solid waste in accordance with applicable federal, state, and local requirements. It is anticipated that nonhazardous solid waste will be generated during the project. No hazardous waste is anticipated as a result of this project. Contractor shall provide BAFS EPM with data to identify the type, tonnage and destination (e.g. landfill, recycling, waste to energy, etc.)

of all solid waste (including green waste) that is recycled or disposed of off-station on a monthly basis. Copies of manifests and weight tickets shall also be provided to the BAFS EPM. Solid waste will be removed at the expense of the contractor.

3.2.6.1. Green Waste Disposal. All removed green waste material may be may be sent through a chipper (not government provided) and/or accumulated in a designated green waste area on BAFS within 30 calendar days of removal through prior coordination with the BAFS EPM. Any generated wood chips will be deposited at the riparian restoration site and/or in a designated area on BAFS. In the unanticipated event that waste requiring an alternative disposal method is generated during this project, the contractor will contact the BAFS EPM to discuss disposal alternatives.

4. NOTIFICATION REQUIREMENTS

The Contractor is required to notify the CO of critical issues that may affect the contract performance and/or human health and the environment. The types of issues that require notification include, but are not limited to, health risks, spills, changes in critical personnel, and finding Munitions and Explosives of Concern (MEC). MEC is unlikely and not anticipated. As an example, if MEC were discovered during field activities, the Contractor would be required to immediately stop work, report the discovery to BAFS Security Forces and implement the appropriate safety precautions. Field activities could not continue until clearance is received from the BAFS Security Forces . On critical issues, verbal notification should be made immediately, followed by written notification no later than 24 hours.

5. PHOTO DOCUMENTATION

The Contractor shall prepare digital photo documentation of the site and field activities. Photo documentation will include weekly before and after photos throughout the entire project. Digital photos will be submitted to the BAFS EPM in JPEG format unless otherwise specified. The contractor shall provide an index for each set of photographs submitted identifying site, project number, contractor, and a brief description.

6. BAFS ACCESS

The Contractor shall have access to BAFS in order to perform required tasks. To gain access, the contractor shall supply requested personal identifiable information of contractor personnel, to include sub-contractors, to BAFS Security Forces (SF) thru the contract COR and/or sponsor via the Form B-180 NLT ten (10) business days prior to contract start date. BAFS SF will conduct background checks on each individual listed on the Form B180 and will post an Entry Access Listing (EAL) of authorized contractors at the Installation Entry Control Point when complete. Contractors shall present a valid identification card to the gate sentry for entry verification. Contractors, at no time, will have the authority to sponsor, escort or vouch additional personnel onto BAFS. Contractor vehicles will be subject to search prior to entry onto BAFS. The contractor shall immediately notify SF thru the COR anytime an individual is no longer required access to BAFS due to employment termination, re-assignment, etc.

7. SPECIFIC TASKS

The contractor shall complete all work within the scope of this contract without government supervision.

7.1. Expand Native Plant Nursery

The BAFS goal is to upgrade/expand the existing primitive nursery site to a larger more efficient operational nursery site to grow native Hawaiian plants for natural resource restoration projects at BAFS.

7.1.1. CLIN 0001: NURSERY SITE: GENERAL USE AREAS

7.1.1.1. Extend north side covered pavilion approximately 28’ length and 15’ wide. The new pavilion area will provide covered space for a misting table that will be constructed under this PWS. The new extended pavilion with have 8 vertical support posts (posts only are government provided), appropriate cross beams, and corrugated plastic roof, etc. The plastic roof will use all tinted translucent panels to provide added light. Install hurricane straps that wrap over the cross beams and attach to the 8 vertical support posts.

7.1.1.2. A nursery layout map is provided in Fig 3, Native Plant Nursery Layout. Suggested changes to improve the nursery layout are encouraged and will be considered by the government.

7.1.1.3. Raise two (2) existing spigot faucets to 18” above ground to accommodate the height of a 5 gallon bucket.

7.1.1.4. Install additional general shut off ball-valves to each of the existing fourteen (14) sprinkler risers (See Figure 3: Native Plant Nursery Layout).

7.1.1.5. Install solar or battery powered outdoor six station timer on the vertical pavilion post (NW post facing mauka).

7.1.1.6. Reconfigure spray irrigation system on existing two propagation tables to ensure spray reaches all surfaces of the two propagation tables with water pressure of 36 psi. Take into account new third propagation table spray irrigation described in paragraph 7.1.2.3.6. The spray irrigation on the two existing propagation tables is not sufficient because of dry “shadows” under the sprinkler heads. Each table has a separate programmable controller for the irrigation sprinklers.

7.1.1.7. The government will consider contractor recommendations for a differently described propagation table irrigation system.

7.1.2. NEW PROPAGATION TABLE

7.1.2.1. Install one (1) new raised propagation tables measuring 6’ wide, 60’ long and height of 2’ off the ground.

7.1.2.2. A water spigot positioned to 18” above ground, to accommodate height of a 5 gallon bucket, will be located at the north end of the table.

7.1.2.3. The propagation table will be constructed to the following specifications. The government will consider contractor recommended changes to the specifications that improve upon the design.

7.1.2.3.1. The surface of the table bench will be 6” galvanized wire mesh. The wire mesh is supported by thick wire gauge legs (galvanized metal) that go down length of the plant bench. Each end of the bench is supported by two anchor posts anchored by cement into the ground. The anchor posts provide the main support of the bench. The thick wire gauge legs (galvanized metal) run between the four anchor posts and are spaced 2’. The support legs are underneath the mesh and anchored to the mesh. These legs hold the main weight of the bench.

7.1.2.3.2. The plant bench top is galvanized wire mesh with 6” spacing that perfectly fits 6” pots and 1 gallon pots that securely sit in the wire mesh and prevent strong winds from blowing them over. Top-heavy groundcover plants with spreading foliage are also secured by setting in the wire mesh. The 6” wire mesh prevents pots from tipping over and allows for maximum drainage.

7.1.2.3.3. Each of the four anchor posts for one bench sets in a hole that is approximately 1’ diameter and 3’ deep and holds about 1/3 cubic yard of cement. Anchor posts are 3” diameter galvanized pipe. Screw eyes in the anchor posts are positioned to face each other outside the table top through which a 1” by 6’ rebar is run through the eye bolts inside poly tubing. The eye bolts hold the 1” rebar and are their length matches the 6’ width of the bench.

7.1.2.3.4. The tension in the 6” galvanized wire mesh table top is controlled by tightening eye bolts on the 6’ rebar. The ends of the 6” mesh fencing wrap around the rebar and poly tubing. Screws are used to increase the tension in the tabletop. The bench surface wire wraps around the rebar and screws increase the tension of the table top mesh.

7.1.2.3.5. The aisle distance between the new and existing table shall be 30” wide to accommodate a 26” wide two-wheel nursery cart.

7.1.2.3.6. Install propagation table irrigation system for new propagation table. Refer to paragraph 7.1.1.6 to design a sufficient irrigation spray system to ensure spray reaches all surfaces of the propagation table with existing water pressure of 36 psi. The spray irrigation on the two existing propagation tables is not sufficient because of dry “shadows” under the sprinkler heads.

Connect to existing PVC pipe underground to reach new platform. For the new table, install spray nozzle irrigation systems using schedule 40 ¾” PVC piping, appropriate PVC tees, elbows, risers, adaptors, timers, etc. The government will consider contractor recommendations for a differently described table irrigation system.

7.1.2.3.7. A solar or battery powered timer will be mounted on vertical post in outdoor box. The new propagation table will run off a separate Hunter ¾” anti-siphon valve with solenoid.

7.1.2.3.8. Install an “adjustable” propagation nursery style shade cloth frame and shade cloth over one-half of the new propagation table appropriate to the climate conditions for sun, rain and wind (See Fig 3: Native Plant Nursery Layout). The shade cloth needs to accommodate plants growing up to 5’ tall.

“Adjustable” means that the cloth can be easily extended over the plants or retracted to one side for full sun exposure as needed. The shade cloth will only be installed on the one new propagation table.

7.1.3. CUTTINGS/MISTING PROPAGATION TABLES

7.1.3.1. Install one (1) new raised misting table to propagate cuttings measuring 6’ wide, 24’ long and height of 2’ off the ground. This table will be placed under the new covered pavilion extension described in 7.1.1.1, on the east side of the covered pavilion. (See Fig 3: Native Plant Nursery Layout).

7.1.3.2. The propagation table will be constructed to the same specifications described in

9.1.2.3. The government will consider contractor recommended changes to the specifications that improve upon the design.

7.1.3.2.1. The surface of the table bench will be 6” galvanized wire mesh. The wire mesh is supported by thick wire gauge legs (galvanized metal) that go down length of the plant bench. Each end of the bench is supported by two anchor posts anchored by cement into the ground. The anchor posts provide the main support of the bench. The thick wire gauge legs (galvanized metal) run between the four anchor posts and are spaced 2’. The support legs are underneath the mesh and anchored to the mesh. These legs hold the main weight of the bench.

7.1.3.2.2. The plant bench top is galvanized wire mesh with 6” spacing that perfectly fits 6” pots and 1 gallon pots that securely sit in the wire mesh and prevent strong winds from blowing them over. Top-heavy groundcover plants with spreading foliage are also secured by setting in the wire mesh. The 6” wire mesh prevents pots from tipping over and allows for maximum drainage.

7.1.3.2.3. Each of the four anchor posts for one bench sets in a hole that is approximately 1’ diameter and 3’ deep and holds about 1/3 cubic yard of cement. Anchor posts are 3” diameter galvanized pipe. Screw eyes in the anchor posts are positioned to face each other outside the table top through which a 1” by 6’ rebar is run through the eye bolts inside poly tubing. The eye bolts hold the 1” rebar and are their length matches the 6’ width of the bench.

7.1.3.2.4. The tension in the 6” galvanized wire mesh table top is controlled by tightening eye bolts on the 6’ rebar. The ends of the 6” mesh fencing wrap around the rebar and poly tubing. Screws are used to increase the tension in the tabletop. The bench surface wire wraps around the rebar and screws increase the tension of the table top mesh.

7.1.3.2.5. The aisle distance between the new and existing table shall be 30” wide to accommodate a 26” wide two-wheel nursery cart.

7.1.3.2.6. Install propagation table irrigation system for new propagation table. Refer to paragraph 7.1.1.6 to design a sufficient irrigation spray system to ensure spray reaches all surfaces of the propagation table with existing water pressure of 36 psi. The spray irrigation on the two existing propagation tables is not sufficient because of dry “shadows” under the sprinkler heads.

Connect to existing PVC pipe underground to reach new platform. For the new table, install spray nozzle irrigation systems using schedule 40 ¾” PVC piping, appropriate PVC tees, elbows, risers, adaptors, timers, etc. The government will consider contractor recommendations for a differently described table irrigation system.

7.1.3.2.7. Install an “adjustable” propagation nursery style shade cloth frame and shade cloth over one-half of the new propagation table appropriate to the climate conditions for sun, rain and wind. The shade cloth needs to accommodate plants growing up to 5’ tall. “Adjustable” means that the cloth can be easily extended over the plants or retracted to one side for full sun exposure as needed. The shade cloth will only be installed on the one new propagation table.

7.1.3.3. Install planting platforms irrigation/misting systems. Run PVC pipe underground to reach platforms and tie water into existing underground PVC (also Schedule 40 ¾”) for both tables. Each table will have its own water shut-off valve. Install spray or mist nozzle irrigation system using schedule 40 ¾” PVC piping, appropriate PVC tees, elbows, risers, adaptors, timers, etc. Purchase a set of interchangeable mist heads to allow choice to use either sprinkler or mist heads. There will be two rows of sprinklers/misters that run parallel and tandem the length of the table. Run the two parallel rows of misting/spray heads down the center of the table with sprinkler. The vertical sprinklers/misters in each row will be spaced 4’ apart. The height of the sprinklers/misters risers will be appropriate for the size of the table.

The sprinklers at the end of the tables will spray 180 degrees and the sprinklers in the middle of the table will spray 360 degrees. There will be 14 sprinkler/mist heads per table. (See Fig 4, Cuttings Propagation Tables Irrigation System). Install a shut off ball valve to each sprinkler riser. The government will consider contractor recommendations for a differently described cuttings propagation table irrigation system.

7.1.3.4. A solar or battery powered timer will be mounted on vertical post in outdoor box.

The two tables will run off two separate Hunter ¾” anti-siphon valves with solenoids.

7.1.3.5. Run 7 in 1 wire (6 for stations and 1 for common) from 6 station timer (described in Section 7.1.1.5) down post, underground to each of the existing valves for the two existing planting platforms, existing large planting bed, the new propagation table and the new cutting propagation table.

7.1.3.6. Install a 6’ tall wind screen on north (28’ length) and east (20’ length) sides of the misting table using the vertical pavilion posts for support, raised 6” off the ground.

7.1.4. MULCHED BORDER WITH NATIVE TREES/SHRUBS

7.1.4.1. Clear and flatten a 15’ wide border around the nursery site to plant native Hawaiian trees/shrubs. The flat surface will afford water infiltration rather than runoff. Heavy equipment may be used to remove the invasive plants and level the topography. Place a 6” layer of mulch on the 15’ wide border (see Fig 3: Native Plant Nursery layout). In addition, place mulch on three (3) 15’ wide “bump-outs” where trees/shrubs will be planted on the west border (see Fig 3: Native Plant Nursery Layout). The government will provide the mulch, but the contractor will move the mulch from a location approximately 0.25 miles away from the nursery site.

7.1.4.2. Plant seventeen (17) trees and fourteen (14) shrubs/groundcovers in the border site that will be used as stock to propagate future trees and shrubs. The 14 shrubs/groundcovers will be planted in rectangular patches (15’ x 6’). See the tree and shrub layout shown in Fig 3: Native Plant Nursery Layout. The trees and shrubs to be planted are listed in Tables 1-1 and 1-2. Notice in Fig 3 that the trees and shrubs/groundcovers will be planted inside the 15’ wide mulched border on the north, east and south sides of the nursery border. The trees and shrubs/groundcovers on the west side of the nursery border will be planted in the three mulched bump-outs. Contractor will submit a planting layout for EPM and COR approval as part of the Section 3.2.1 work plan. Additional contractor native plant recommendations are welcomed and encouraged.

7.1.4.3. Install poly tubing drip line of appropriate size to irrigate the native plants in the mulched nursery border with water pressure of 36 psi. Tie the irrigation line into the water line that feeds the NE spigot at the connection point tie-in valve that feeds the large plant area located on east side of the nursery (NE corner of the large plant area). See the location of the poly tubing drip line in Fig 3: Native Plant Nursery Layout.

Table 1-1, Hawaiian Native Trees for Nursery Border

Table 1-2, Hawaiian Native Shrubs for Nursery Border

HAWAIIAN NAME

GENUS SPECIES

COMMON NAME

1 Alahe‘e Psydrax odora

2 Āulu, Lonomea Sapindus oahuensis Oʻahu soapberry

3 Hala (Smooth-edged leaf variety, Female)

Pandanus tectorius Hawaiian screwpine

4 Hala (Smooth-edged leaf variety, Male)

Pandanus tectorius Hawaiian screwpine

5 Hao (Vertical) Rauvolfia sandwicensis Hao

6 ʻIliahi aloʻe Santalum ellipticum Coastal sandalwood

7 Koaiʻa Acacia koaia

8 Kolomona Senna gaudichaudii Native senna

9 Kou Cordia subcordata Sea trumpet

10 Lama Diospyros sandwicensis Hawaiian Ebony, Persimmon

11 Loulu Pritchardia sp

12 ʻOhe kukuluāe Polyscias sandwicensis Hawaiian reynoldsia

13 Wiliwili Erythrina sandwicensis Hawaiian coral tree

14 Contractor native plant recommendation

15 Contractor native plant recommendation

16 Contractor native plant recommendation

17 Contractor native plant recommendation

HAWAIIAN NAME

COMMON NAME

1 ʻAʻaliʻi Dodonaea viscosa Hawaiian hopseed bush

2 ʻĀkia Wikstroemia uva-ursi False ʻōhelo

3 ʻĀweoweo Chenopodium oahuense Hawaiian goosefoot

4 ʻIhi lutea Portulaca lurea Yellow purslane

5 ʻIliahi Santalum ellipticum Coastal Sandlewood

6 ʻIlima papa Sida fallax Prostrate ʻilima

7 Kawelu Eragrostis variabilis Lovegrass

8 Kuluʻī Nototrichium sandwicense Kaʻala rockwort

9 Maiapilo Capparis sandwichiana Hawaiian caper

10 Maʻo Gossypium tomentosum Hawaiian cotton

11 Naio Ku (Myoporum sandwicense waimānalo

False sandalwood

12 Naio Papa Myoporum sandwicense Naio prostrate

13 Nehe Melanthera integrifola Nehe

14 Pili (Tall) Heteropogon contortus Pili

7.1.5. Optional SHELVING

7.1.5.1. Construct one shelving unit and set on flat concrete blocks. The shelving unit will measure approximately 10’ long, 3’ wide and 8’ high. The unit will have four functional shelves with 2’ spacing between the each of the 4 shelves (including a bottom shelf a few inches off the ground). The top of the shelving unit will be covered with the same material as the lower shelves. See Fig 3, Native Plant Nursery Layout for the shelving unit location. The unit will be made of treated exterior wood and use 5/8” exterior plywood for the shelf surfaces and no painting, staining or sanding required. Additional contractor recommendations are welcome to design/construct the shelves.

7.1.6. Optional REPAIR BORDER

7.1.6.1. Three sides of the existing nursery border made from 3.5” wide and 0.5” thick lengths of plastic lumber are collapsing. Replace the border with stronger plastic lumber, such as 5.5” wide and 1” thick, and secure in place with appropriate stakes in the ground. The border contains the approximately 80‘ x 80’ square shape of the nursery. Additional contractor recommendations are welcome to secure the three sides of the border.

7.2. RIPARIAN RESTORATION. The following tasks establish a 430’ long and 40’ wide riparian zone out-planting with native Hawaiian trees, shrubs and groundcovers and adjacent 10’ wide dirt road/trail along Pūhā stream.

7.2.1. CLIN 0002: RIPARIAN SITE PREPARATION: CLEAR SCRUB, CHIP AND ESTABLISH DIRT

ROAD AND IRRIGATION SYSTEM (TOTAL PROJECT AREA IS 50’ WIDE AND 430’ LONG)

7.2.1.1. Starting at the eastern end of the riparian site, cut/scrape/clear/chip a 50’ wide zone of scrub hale koa, and a few small trees (like Milo) and brush along Pūhā stream (See attached Fig 2, Aerial View Riparian Restoration Site and Fig 7, Ground View Pūhā Stream Riparian Restoration Site) to create space for a 1) 40’ wide (measured from the stream edge) and 430’ long riparian out-planting zone (adjacent/parallel to the stream) and 2) new 10’ wide dirt road/trail that runs parallel/adjacent to the riparian zone on the north side. Essentially the existing dirt road/trail that runs adjacent to the stream will be planted over and scrub will be cleared for the new 10’ wide dirt road at the edge of the new 40’ wide out-planted riparian zone. In effect, the 40’ wide riparian out-planting will be bordered by the 10’ wide dirt trail/road on the north side and Pūhā stream on the south side.

7.2.1.2. Use knowledge of Waimānalo flora and Hawaiian native plants to remove invasive plants from the riparian habitat and protect any existing Hawaiian native plants.

The existing hale koa is approximately 15’ tall with 2-3” diameter trunks. The distance from the stream edge to the front edge of the Hale Koa scrub is approximately 26’ to 28’. Clear/chip the scrub vegetation and remove to a separate mulch pile if the mulch contains viable weed seeds. Green waste that cannot be left on the ground will be disposed in accordance with paragraph 3.2.6.1

7.2.1.3. Cut/remove existing invasive vegetation from the stream bank (remove mangrove propagules in shallow water at the water’s edge) to ground level. Use engineering controls and work practices to prevent sediment runoff from the bank into the stream. Do not leave exposed soil for extended periods of time that is vulnerable to rainwater/sediment runoff. Use knowledge of Waimānalo flora and Hawaiian native plants to remove invasive plants from the stream bank habitat and protect any existing Hawaiian native plants.

7.2.1.3.1. The vegetative clearance will include, but not be limited to, the following steps:

(1) Cut/scrap/clear/chip

(2) Let grow

(3) Apply herbicides (vegetative and pre-emergent appropriate for use near a waterway)

(4) Let grow

(5) Apply herbicides (vegetative and pre-emergent appropriate for use near a waterway)

7.2.1.4. Apply 6” layer of mulch over the entire 40’x430’ area to be out-planted. This mulch is not government provided.

7.2.1.5. Establish a temporary irrigation system to irrigate the newly planted vegetation along the riparian zone for one year. Tie into an existing 2” HDPE water line that runs along Pūhā stream from the Tinker Road Bridge up to within approximately 200’ of the new riparian out-planting site. (See Fig 6, Aerial View Pūhā Stream with Existing 2” Waterline). Extend this existing line to the middle of new riparian out-planting area, place an additional hose bib, and run drip line every 2 feet and plant on each side drip line. For this type of system, consider to install a tee in the 2” water line to reduce down to 1” PVC pipe. Install tees along 1” irrigation line to tie in drip irrigation lines. Install multiple solenoid valves with timers to allow user to alternate irrigation of appropriately sized out-planted sections one at a time (based on water pressure). The government will consider contractor recommended changes to improve the irrigation system.

7.2.2. RIPARIAN SITE PLANTS: PROPAGATE, OUT-PLANT, FERTILIZE, AND IRRIGATE RIPARIAN

ZONE (40’ WIDE AND 430’ LONG)

7.2.2.1. The native plant choices, number of plants, density and configuration will be optimized to create an ecologically healthy (biodiverse) riparian habitat to:

Support Hawaiian native wetland birds with cover, foraging, roosting and breeding habitat

Provide stream bank stability and soil conservation

Provide shade

Support low maintenance

Sustain a dry season

Successfully compete against invasive plants to prevent/reduce

Reduce likelihood of invasive plants from returning

“Discourage”, if possible, shelter/hiding places for water bird predators (mongoose, rats, cats, and pigs)

7.2.2.2. Propagate Hawaiian native plants to out-plant 40’ wide and 430’ long riparian zone parallel/adjacent to Pūhā stream with trees, shrubs and groundcovers (identified in paragraph 7.2.2.5). Plants will be propagated/supplied by the contractor.

7.2.2.3. Propagate with Waimānalo plant stock when possible. Preference will be given to contractors who are able to propagate local plant stock, native to Waimānalo when possible, to more closely restore the riparian habitat to historical vegetative conditions.

7.2.2.4. Propagate and out-plant the Hawaiian native plants using proven and well established nursery and landscaping methods.

7.2.2.5. Each 50’ long by 40’ wide section of riparian habitat will be out-planted with Hawaiian native plants to include no less than all of the eighteen (18) plant species presented in Table 2, Minimum Hawaiian Native Plant Species for Riparian Zone.

Additional contractor native plant recommendations are encouraged that follow paragraph 7.2.2.1 guidelines.

7.2.2.6. The “soil” along the stream consists of sand, clay and rock that were installed along Pūhā stream bank as fill material in the 1950’s. The soil under the existing dirt trail/road is compacted and may require mechanical means to loosen/scarify the surface for planting.

7.2.2.7. Contractor will coordinate the proposed Out-planting Native Plant Species List and Riparian Out-planting Site Design Layout Diagrams with the BAFS EPM as part of the paragraph 3.2.1 Work Plan.

7.2.2.8. Contractor will use knowledge of Hawaiian native plants to optimize the out-planting based on the growth characteristics/properties of the plant. For example:

In general, plant the same species of groundcover plants grouped together in patches/clumps.

Plant Pāʻūohiʻiaka, pōhinahina, and pōhuehue at the top of the stream bank slope since these plants will grow down slope (rather than upslope).

Plant naupaka along the top of the stream slope where it will grow down to the stream edge.

7.2.2.9. Fertilize newly planted native plants with an appropriate fertilizer to help the plants to become established. Follow manufacturer guidelines to limit the amount of fertilizer application to minimize fertilizer loss from stormwater runoff.

7.2.2.10. Irrigate newly planted vegetation with irrigation system described in paragraph 7.2.1.5.

7.2.2.11. The performance standard is 80% plant survival rate over 1 year.

Table 2, Minimum Hawaiian Native Plant Species for Riparian Zone

HAWAIIAN

NAME

COMMON

NAME

CLIMATE

DESCRIPTION/GROWTH

HERBACEOUS

1 ʻAeʻae Bacopa monnieri

Dwarf bacopa, Water hyssop

Wet/Moist Perennial Herb

2 ʻIlieʻe Plumbago zeylanica

White leadwort

Dry Low sprawling groundcover

GRASSES, RUSHES & SEDGES

3 ʻAhuʻawa Cyperus javanicus

Java sedge Dry/Moist Perennial sedge

4 A‘ka‘akai naku

Schoenoplectella tabernae-montani

Wet Tall Rush

5 ʻUki Cladium jamaicense

Sedge or saw-grass

Wet Perennial sedge

SHRUBS

6 ʻAʻaliʻi Dodonaea viscosa

Hawaiian hopseed bush

Dry/Moist Shrub

7 ʻĀweoweo Chenopodium oahuense

Hawaiian goosefoot

Dry Low drooping shrub

8 Hau hele wai

Hibiscus furcellatus

Hawaiian pink hibiscus

Dry/Moist Shrub

9 ʻIliahi aloʻe Santalum ellipticum

Coastal sandalwood

Dry Sprawling shrub or tree

10 Maiapilo Capparis sandwichiana

Hawaiian caper bush

Dry

Low spreading shrub

11 Naio shrub (Waimānalo stock)

Myoporum sandwicense

Bastard sandalwood

Dry Shrub

12 Naupaka kai Scaevola taccada

Beach naupaka

Dry Shrub

13 Pōhinahina Vitex rotundifolia

Beach vitex Dry Low, trailing shrub

TREES

14 Alaheʻe Psydrax odorata Dry Small Tree

Hala Pandanus tectorius

Hawaiian screwpine Dry/Moist

Tree

16 Hao Rauvolfia sandwicensis

Hao Dry Tall shrub or tree

17 Koaiʻa Acacia koaia Dwarf koa Dry Small Tree

18 ʻOhe kukuluāeʻo

Polyscias sandwicensis

Hawaiian reynoldsia

Dry Tree

7.2.3. MAINTAIN RIPARIAN ZONE

7.2.3.1. Perform periodic maintenance and irrigation watering for six (6) months after planting, not to exceed one year from contract award date. The purpose of periodic maintenance is to control invasive weeds, replace dead native plants and make “repairs” to the riparian out-planting as needed due to weather-related events or feral pig damage. The purpose of the irrigation watering is to allow the plants to become established in their new habitat. The EPM will act as the daily “eyes on the ground” and notify the contractor of any changes to the system to reduce the number of site visits.

7.2.4. OPTIONAL: REPLACE NATIVE TREES ALONG 420’ LENGTH FIRST RIPARIAN OUT-

PLANTING

7.2.4.1. Replace 6 Hao trees, 8 Koaiʻa tes, and 6 ʻOhe kukuluāeʻo trees.

7.2.4.2. Upgrade/repair former irrigation lines already in place to provide temporary irrigation.

7.2.5. OPTIONAL: REMOVE INVASIVE PLANTS (0.5 ACRES) FROM RIVER’S EDGE AND SPREAD

MULCH. Remove one-half (0.5) acre of invasive plants from the river’s edge (see Fig 8, Photo Ground View Pu’ewai Wetland River's Edge Invasive Plants) at the Pu‘ewai wetlands and spread mulch as needed. This is a reoccurring action that can be can be exercised as needed.

7.2.5.1. Remove up to combined area of one-half (0.5) acres of non-native invasive plants

(such as, but not limited to, pickleweed (Batis sp.), grasses, herbaceous plants, trees less than 20’ height (such as, but not limited to, Milo, Red Mangrove, Kiawe, Opiuma, Ironwood, Brazilian Pepper, Koa Haole, etc.) and shrub vegetation (such as, but not limited to, Indian Fleabane) from the river’s edge of Pu‘ewai wetlands.

7.2.5.2. Contractor shall use a combination of hand removal, mechanical, and herbicide application methods as needed. Herbicide application shall comply with AFI 32- 1053, federal, state, and local permit requirements. The Contractor shall prepare and submit a Pesticide Discharge Management Plan as necessary. Government provided mulch will be spread over the cleared area (3” deep) in the dry areas (not submerged by water). Mulch will not be spread over the wet areas, or areas that experience recurring flooding as determined by the EPM.

All removed green waste material will be disposed of according to paragraph 3.2.6.1.

7.2.6. OPTIONAL: REMOVE INVASIVE PLANTS FROM FIRST RIPARIAN OUT-PLANTING SITE.

This is a reoccurring action that can be can be exercised as needed.

7.2.6.1. Remove invasive Koa Haole saplings, grasses and other herbaceous plants from 42’ long and 40’ wide first riparian out=planting site as needed. (See Fig 9, Ground View Former Riparian Pu'ewai Out-planting with Invasive Plants).

All removed green waste material will be disposed of according to paragraph 13.1.1.

8. COORDINATION OF ACTIVITIES

The Contractor shall coordinate worksite activities with the COR to ensure the protection of human health and the environment; the prevention of damage to property, utilities, materials, supplies, and equipment; and the avoidance of work interruptions. The Contractor must comply with the Occupational Safety and Health Administration (OSHA) safety and health regulations and local safety office requirements.

9. PERIOD OF PERFORMANCE

9.1. Period of Performance

The period of performance is one (1) calendar year after contract award date.

9.2. Place of Performance

Work shall be accomplished at: Bellows Air Force Station (AFS), USAF PACAF, DET 2, 18 FSS Bellows, 515 Tinker Road, Waimānalo, Hawai‘i, 96795.

10. CONSERVATION

Activities shall be planned and implemented in a manner that protects existing site utilities, surface features, local fauna and the general site environment. This includes the protection of trees, shrubs and other vegetation not in the affected zone from dust damage, soil compaction, and physical contact with machines and equipment. All reasonable measures shall be taken to minimize and suppress fugitive emissions of dust, vapors, and other site materials during site work. The Contractor shall conduct all operations and activities in compliance with federal, state and local regulations.

Activities shall minimize impacts on native Hawaiian waterbirds. The wetlands and stream areas are used by shorebirds and other waterbirds, to forage, roost and breed. Activities shall not disturb the following endangered native Hawaiian waterbirds:

Ae‘o or Black-necked Stilt (Himantopus mexicanus knudseni)

‘Alae ‘Ula or Hawaiian common moorhen (Gallinule chlororopus sandvicensis)

‘Alae Ke‘okeo or Hawaiian Coot (Fulica alai)

Koloa or Hawaiian duck (Anas wyviliana)

Refer to Table 3, Hawaiian Waterbird Breeding Table to see life history and breeding period information about these birds. Immediately notify the BAFS EPM of any nest encounters with these four waterbirds.

11. SCONS CONTRACTING AUTHORITY POINTS OF CONTACT

Ms. Liane Leong Contracting Specialist W: 808-448-2918 Email: liane.leong@us.af.mil mailto:liane.leong@us.af.mil

Ms. Stephanie San Juan Contracting Officer W: 808-448-2939 Email: stephanie.san_juan.1@us.af.mil

12. BAFS AUTHORITY AND POINTS OF CONTACT

Mr. Chris Frantz Lead Engineer Det 2, 18 FSS/CE 515 Tinker Road Waimānalo, HI 96795-1903 W: (808) 448-4913 Email: christopher.frantz.1@us.af.mil

Mr. Craig Gorsuch Environmental Program Manager Det 2, 18 FSS/CEE, Contractor 515 Tinker Road Waimānalo, HI 96795-1903 W: (808) 448-4913 C: (808) 927-1867 E-mail: craig.gorsuch.ctr@us.af.mil

13. GENERAL REQUIREMENTS

13.1. Permits

The Contractor shall obtain all required permits as required by applicable state and federal regulations. All reports and data generated under this contract are the property of the government and distribution by the Contractor to any source, unless previously authorized by the SCONS Contracting Officer, is prohibited. BAFS will obtain the Notice of General Permit Coverage (NGPC) National Pollutant Discharge Elimination System (NPDES) General Permit that authorizes the use of pesticides in the Pu‘ewai Wetlands.

13.2. Episodic Wetlands Flooding

Possibility of episodic flooding should be considered when planning activities in Pu-ewai Wetlands. Pu‘ewai Wetlands occasionally floods during heavy rainfall and when a sand plug forms at the mouth of the stream causing the stream water to back up. Water level can rise 20” when a sand plug occurs inundating the mudflats under water. The sand plug lasts for 3-5 days before the water builds up enough pressure to cut a path back to the ocean. On some occasions, BAFS can manually dig a trench through the sand plug to drain the wetlands over a 48 hour period.

13.3. Site Preparation

The Contractor shall perform site work as necessary to prepare sites for staging area activities.

Security and access controls shall be implemented to prevent unauthorized entry to sites and to protect wildlife from site exposure.

mailto:stephanie.san_juan.1@us.af.mil mailto:craig.gorsuch.ctr@us.af.mil

13.4. Demobilization

The Contractor shall remove any temporary facilities and implement erosion control measures, and restore roads and utilities if affected.

14. ATTACHMENTS

Fig 1, Location Map, BAFS, Nursery & Riparian Sites Fig 2, Aerial View BAFS Riparian Restoration Site (7 APR 2016) Fig 3, Native Plant Nursery Layout Fig 4, Cuttings Propagation Tables Irrigation System Fig 5, Native Hawaiian Plant Nursery Site Fig 6, Aerial View Pūhā Stream with Existing 2” Waterline Fig 7, Ground View Pūhā Stream Riparian Restoration Site Fig 8, Photo Ground View Pu’ewai Wetland River's Edge Invasive Plants Fig 9, Photos Ground View Former Riparian Out-planting Site Table 3, Hawaiian Waterbird Breeding Table